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[Qemu-devel] [PATCH for 2.13 1/5] linux-user: cleanup signal.c
|
From: |
Laurent Vivier |
|
Subject: |
[Qemu-devel] [PATCH for 2.13 1/5] linux-user: cleanup signal.c |
|
Date: |
Thu, 22 Mar 2018 22:58:29 +0100 |
move all target specific parts to
signal.inc.c in arch directory
Signed-off-by: Laurent Vivier <address@hidden>
---
linux-user/aarch64/signal.inc.c | 556 +++
linux-user/alpha/signal.inc.c | 258 ++
linux-user/arm/signal.inc.c | 749 +++++
linux-user/cris/signal.inc.c | 166 +
linux-user/hppa/signal.inc.c | 188 ++
linux-user/i386/signal.inc.c | 579 ++++
linux-user/m68k/signal.inc.c | 406 +++
linux-user/microblaze/signal.inc.c | 226 ++
linux-user/mips/signal.inc.c | 378 +++
linux-user/mips64/signal.inc.c | 1 +
linux-user/nios2/signal.inc.c | 232 ++
linux-user/openrisc/signal.inc.c | 209 ++
linux-user/ppc/signal.inc.c | 667 ++++
linux-user/riscv/signal.inc.c | 196 ++
linux-user/s390x/signal.inc.c | 305 ++
linux-user/sh4/signal.inc.c | 327 ++
linux-user/signal.c | 6487 +-----------------------------------
linux-user/sparc/signal.inc.c | 601 ++++
linux-user/sparc64/signal.inc.c | 1 +
linux-user/tilegx/signal.inc.c | 163 +
linux-user/x86_64/signal.inc.c | 1 +
linux-user/xtensa/signal.inc.c | 253 ++
22 files changed, 6463 insertions(+), 6486 deletions(-)
create mode 100644 linux-user/aarch64/signal.inc.c
create mode 100644 linux-user/alpha/signal.inc.c
create mode 100644 linux-user/arm/signal.inc.c
create mode 100644 linux-user/cris/signal.inc.c
create mode 100644 linux-user/hppa/signal.inc.c
create mode 100644 linux-user/i386/signal.inc.c
create mode 100644 linux-user/m68k/signal.inc.c
create mode 100644 linux-user/microblaze/signal.inc.c
create mode 100644 linux-user/mips/signal.inc.c
create mode 100644 linux-user/mips64/signal.inc.c
create mode 100644 linux-user/nios2/signal.inc.c
create mode 100644 linux-user/openrisc/signal.inc.c
create mode 100644 linux-user/ppc/signal.inc.c
create mode 100644 linux-user/riscv/signal.inc.c
create mode 100644 linux-user/s390x/signal.inc.c
create mode 100644 linux-user/sh4/signal.inc.c
create mode 100644 linux-user/sparc/signal.inc.c
create mode 100644 linux-user/sparc64/signal.inc.c
create mode 100644 linux-user/tilegx/signal.inc.c
create mode 100644 linux-user/x86_64/signal.inc.c
create mode 100644 linux-user/xtensa/signal.inc.c
diff --git a/linux-user/aarch64/signal.inc.c b/linux-user/aarch64/signal.inc.c
new file mode 100644
index 0000000000..28fa0f2f22
--- /dev/null
+++ b/linux-user/aarch64/signal.inc.c
@@ -0,0 +1,556 @@
+struct target_sigcontext {
+ uint64_t fault_address;
+ /* AArch64 registers */
+ uint64_t regs[31];
+ uint64_t sp;
+ uint64_t pc;
+ uint64_t pstate;
+ /* 4K reserved for FP/SIMD state and future expansion */
+ char __reserved[4096] __attribute__((__aligned__(16)));
+};
+
+struct target_ucontext {
+ abi_ulong tuc_flags;
+ abi_ulong tuc_link;
+ target_stack_t tuc_stack;
+ target_sigset_t tuc_sigmask;
+ /* glibc uses a 1024-bit sigset_t */
+ char __unused[1024 / 8 - sizeof(target_sigset_t)];
+ /* last for future expansion */
+ struct target_sigcontext tuc_mcontext;
+};
+
+/*
+ * Header to be used at the beginning of structures extending the user
+ * context. Such structures must be placed after the rt_sigframe on the stack
+ * and be 16-byte aligned. The last structure must be a dummy one with the
+ * magic and size set to 0.
+ */
+struct target_aarch64_ctx {
+ uint32_t magic;
+ uint32_t size;
+};
+
+#define TARGET_FPSIMD_MAGIC 0x46508001
+
+struct target_fpsimd_context {
+ struct target_aarch64_ctx head;
+ uint32_t fpsr;
+ uint32_t fpcr;
+ uint64_t vregs[32 * 2]; /* really uint128_t vregs[32] */
+};
+
+#define TARGET_EXTRA_MAGIC 0x45585401
+
+struct target_extra_context {
+ struct target_aarch64_ctx head;
+ uint64_t datap; /* 16-byte aligned pointer to extra space cast to __u64 */
+ uint32_t size; /* size in bytes of the extra space */
+ uint32_t reserved[3];
+};
+
+#define TARGET_SVE_MAGIC 0x53564501
+
+struct target_sve_context {
+ struct target_aarch64_ctx head;
+ uint16_t vl;
+ uint16_t reserved[3];
+ /* The actual SVE data immediately follows. It is layed out
+ * according to TARGET_SVE_SIG_{Z,P}REG_OFFSET, based off of
+ * the original struct pointer.
+ */
+};
+
+#define TARGET_SVE_VQ_BYTES 16
+
+#define TARGET_SVE_SIG_ZREG_SIZE(VQ) ((VQ) * TARGET_SVE_VQ_BYTES)
+#define TARGET_SVE_SIG_PREG_SIZE(VQ) ((VQ) * (TARGET_SVE_VQ_BYTES / 8))
+
+#define TARGET_SVE_SIG_REGS_OFFSET \
+ QEMU_ALIGN_UP(sizeof(struct target_sve_context), TARGET_SVE_VQ_BYTES)
+#define TARGET_SVE_SIG_ZREG_OFFSET(VQ, N) \
+ (TARGET_SVE_SIG_REGS_OFFSET + TARGET_SVE_SIG_ZREG_SIZE(VQ) * (N))
+#define TARGET_SVE_SIG_PREG_OFFSET(VQ, N) \
+ (TARGET_SVE_SIG_ZREG_OFFSET(VQ, 32) + TARGET_SVE_SIG_PREG_SIZE(VQ) * (N))
+#define TARGET_SVE_SIG_FFR_OFFSET(VQ) \
+ (TARGET_SVE_SIG_PREG_OFFSET(VQ, 16))
+#define TARGET_SVE_SIG_CONTEXT_SIZE(VQ) \
+ (TARGET_SVE_SIG_PREG_OFFSET(VQ, 17))
+
+struct target_rt_sigframe {
+ struct target_siginfo info;
+ struct target_ucontext uc;
+};
+
+struct target_rt_frame_record {
+ uint64_t fp;
+ uint64_t lr;
+ uint32_t tramp[2];
+};
+
+static void target_setup_general_frame(struct target_rt_sigframe *sf,
+ CPUARMState *env, target_sigset_t *set)
+{
+ int i;
+
+ __put_user(0, &sf->uc.tuc_flags);
+ __put_user(0, &sf->uc.tuc_link);
+
+ __put_user(target_sigaltstack_used.ss_sp, &sf->uc.tuc_stack.ss_sp);
+ __put_user(sas_ss_flags(env->xregs[31]), &sf->uc.tuc_stack.ss_flags);
+ __put_user(target_sigaltstack_used.ss_size, &sf->uc.tuc_stack.ss_size);
+
+ for (i = 0; i < 31; i++) {
+ __put_user(env->xregs[i], &sf->uc.tuc_mcontext.regs[i]);
+ }
+ __put_user(env->xregs[31], &sf->uc.tuc_mcontext.sp);
+ __put_user(env->pc, &sf->uc.tuc_mcontext.pc);
+ __put_user(pstate_read(env), &sf->uc.tuc_mcontext.pstate);
+
+ __put_user(env->exception.vaddress, &sf->uc.tuc_mcontext.fault_address);
+
+ for (i = 0; i < TARGET_NSIG_WORDS; i++) {
+ __put_user(set->sig[i], &sf->uc.tuc_sigmask.sig[i]);
+ }
+}
+
+static void target_setup_fpsimd_record(struct target_fpsimd_context *fpsimd,
+ CPUARMState *env)
+{
+ int i;
+
+ __put_user(TARGET_FPSIMD_MAGIC, &fpsimd->head.magic);
+ __put_user(sizeof(struct target_fpsimd_context), &fpsimd->head.size);
+ __put_user(vfp_get_fpsr(env), &fpsimd->fpsr);
+ __put_user(vfp_get_fpcr(env), &fpsimd->fpcr);
+
+ for (i = 0; i < 32; i++) {
+ uint64_t *q = aa64_vfp_qreg(env, i);
+#ifdef TARGET_WORDS_BIGENDIAN
+ __put_user(q[0], &fpsimd->vregs[i * 2 + 1]);
+ __put_user(q[1], &fpsimd->vregs[i * 2]);
+#else
+ __put_user(q[0], &fpsimd->vregs[i * 2]);
+ __put_user(q[1], &fpsimd->vregs[i * 2 + 1]);
+#endif
+ }
+}
+
+static void target_setup_extra_record(struct target_extra_context *extra,
+ uint64_t datap, uint32_t extra_size)
+{
+ __put_user(TARGET_EXTRA_MAGIC, &extra->head.magic);
+ __put_user(sizeof(struct target_extra_context), &extra->head.size);
+ __put_user(datap, &extra->datap);
+ __put_user(extra_size, &extra->size);
+}
+
+static void target_setup_end_record(struct target_aarch64_ctx *end)
+{
+ __put_user(0, &end->magic);
+ __put_user(0, &end->size);
+}
+
+static void target_setup_sve_record(struct target_sve_context *sve,
+ CPUARMState *env, int vq, int size)
+{
+ int i, j;
+
+ __put_user(TARGET_SVE_MAGIC, &sve->head.magic);
+ __put_user(size, &sve->head.size);
+ __put_user(vq * TARGET_SVE_VQ_BYTES, &sve->vl);
+
+ /* Note that SVE regs are stored as a byte stream, with each byte element
+ * at a subsequent address. This corresponds to a little-endian store
+ * of our 64-bit hunks.
+ */
+ for (i = 0; i < 32; ++i) {
+ uint64_t *z = (void *)sve + TARGET_SVE_SIG_ZREG_OFFSET(vq, i);
+ for (j = 0; j < vq * 2; ++j) {
+ __put_user_e(env->vfp.zregs[i].d[j], z + j, le);
+ }
+ }
+ for (i = 0; i <= 16; ++i) {
+ uint16_t *p = (void *)sve + TARGET_SVE_SIG_PREG_OFFSET(vq, i);
+ for (j = 0; j < vq; ++j) {
+ uint64_t r = env->vfp.pregs[i].p[j >> 2];
+ __put_user_e(r >> ((j & 3) * 16), p + j, le);
+ }
+ }
+}
+
+static void target_restore_general_frame(CPUARMState *env,
+ struct target_rt_sigframe *sf)
+{
+ sigset_t set;
+ uint64_t pstate;
+ int i;
+
+ target_to_host_sigset(&set, &sf->uc.tuc_sigmask);
+ set_sigmask(&set);
+
+ for (i = 0; i < 31; i++) {
+ __get_user(env->xregs[i], &sf->uc.tuc_mcontext.regs[i]);
+ }
+
+ __get_user(env->xregs[31], &sf->uc.tuc_mcontext.sp);
+ __get_user(env->pc, &sf->uc.tuc_mcontext.pc);
+ __get_user(pstate, &sf->uc.tuc_mcontext.pstate);
+ pstate_write(env, pstate);
+}
+
+static void target_restore_fpsimd_record(CPUARMState *env,
+ struct target_fpsimd_context *fpsimd)
+{
+ uint32_t fpsr, fpcr;
+ int i;
+
+ __get_user(fpsr, &fpsimd->fpsr);
+ vfp_set_fpsr(env, fpsr);
+ __get_user(fpcr, &fpsimd->fpcr);
+ vfp_set_fpcr(env, fpcr);
+
+ for (i = 0; i < 32; i++) {
+ uint64_t *q = aa64_vfp_qreg(env, i);
+#ifdef TARGET_WORDS_BIGENDIAN
+ __get_user(q[0], &fpsimd->vregs[i * 2 + 1]);
+ __get_user(q[1], &fpsimd->vregs[i * 2]);
+#else
+ __get_user(q[0], &fpsimd->vregs[i * 2]);
+ __get_user(q[1], &fpsimd->vregs[i * 2 + 1]);
+#endif
+ }
+}
+
+static void target_restore_sve_record(CPUARMState *env,
+ struct target_sve_context *sve, int vq)
+{
+ int i, j;
+
+ /* Note that SVE regs are stored as a byte stream, with each byte element
+ * at a subsequent address. This corresponds to a little-endian load
+ * of our 64-bit hunks.
+ */
+ for (i = 0; i < 32; ++i) {
+ uint64_t *z = (void *)sve + TARGET_SVE_SIG_ZREG_OFFSET(vq, i);
+ for (j = 0; j < vq * 2; ++j) {
+ __get_user_e(env->vfp.zregs[i].d[j], z + j, le);
+ }
+ }
+ for (i = 0; i <= 16; ++i) {
+ uint16_t *p = (void *)sve + TARGET_SVE_SIG_PREG_OFFSET(vq, i);
+ for (j = 0; j < vq; ++j) {
+ uint16_t r;
+ __get_user_e(r, p + j, le);
+ if (j & 3) {
+ env->vfp.pregs[i].p[j >> 2] |= (uint64_t)r << ((j & 3) * 16);
+ } else {
+ env->vfp.pregs[i].p[j >> 2] = r;
+ }
+ }
+ }
+}
+
+static int target_restore_sigframe(CPUARMState *env,
+ struct target_rt_sigframe *sf)
+{
+ struct target_aarch64_ctx *ctx, *extra = NULL;
+ struct target_fpsimd_context *fpsimd = NULL;
+ struct target_sve_context *sve = NULL;
+ uint64_t extra_datap = 0;
+ bool used_extra = false;
+ bool err = false;
+ int vq = 0, sve_size = 0;
+
+ target_restore_general_frame(env, sf);
+
+ ctx = (struct target_aarch64_ctx *)sf->uc.tuc_mcontext.__reserved;
+ while (ctx) {
+ uint32_t magic, size, extra_size;
+
+ __get_user(magic, &ctx->magic);
+ __get_user(size, &ctx->size);
+ switch (magic) {
+ case 0:
+ if (size != 0) {
+ err = true;
+ goto exit;
+ }
+ if (used_extra) {
+ ctx = NULL;
+ } else {
+ ctx = extra;
+ used_extra = true;
+ }
+ continue;
+
+ case TARGET_FPSIMD_MAGIC:
+ if (fpsimd || size != sizeof(struct target_fpsimd_context)) {
+ err = true;
+ goto exit;
+ }
+ fpsimd = (struct target_fpsimd_context *)ctx;
+ break;
+
+ case TARGET_SVE_MAGIC:
+ if (arm_feature(env, ARM_FEATURE_SVE)) {
+ vq = (env->vfp.zcr_el[1] & 0xf) + 1;
+ sve_size = QEMU_ALIGN_UP(TARGET_SVE_SIG_CONTEXT_SIZE(vq), 16);
+ if (!sve && size == sve_size) {
+ sve = (struct target_sve_context *)ctx;
+ break;
+ }
+ }
+ err = true;
+ goto exit;
+
+ case TARGET_EXTRA_MAGIC:
+ if (extra || size != sizeof(struct target_extra_context)) {
+ err = true;
+ goto exit;
+ }
+ __get_user(extra_datap,
+ &((struct target_extra_context *)ctx)->datap);
+ __get_user(extra_size,
+ &((struct target_extra_context *)ctx)->size);
+ extra = lock_user(VERIFY_READ, extra_datap, extra_size, 0);
+ break;
+
+ default:
+ /* Unknown record -- we certainly didn't generate it.
+ * Did we in fact get out of sync?
+ */
+ err = true;
+ goto exit;
+ }
+ ctx = (void *)ctx + size;
+ }
+
+ /* Require FPSIMD always. */
+ if (fpsimd) {
+ target_restore_fpsimd_record(env, fpsimd);
+ } else {
+ err = true;
+ }
+
+ /* SVE data, if present, overwrites FPSIMD data. */
+ if (sve) {
+ target_restore_sve_record(env, sve, vq);
+ }
+
+ exit:
+ unlock_user(extra, extra_datap, 0);
+ return err;
+}
+
+static abi_ulong get_sigframe(struct target_sigaction *ka,
+ CPUARMState *env, int size)
+{
+ abi_ulong sp;
+
+ sp = env->xregs[31];
+
+ /*
+ * This is the X/Open sanctioned signal stack switching.
+ */
+ if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp)) {
+ sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
+ }
+
+ sp = (sp - size) & ~15;
+
+ return sp;
+}
+
+typedef struct {
+ int total_size;
+ int extra_base;
+ int extra_size;
+ int std_end_ofs;
+ int extra_ofs;
+ int extra_end_ofs;
+} target_sigframe_layout;
+
+static int alloc_sigframe_space(int this_size, target_sigframe_layout *l)
+{
+ /* Make sure there will always be space for the end marker. */
+ const int std_size = sizeof(struct target_rt_sigframe)
+ - sizeof(struct target_aarch64_ctx);
+ int this_loc = l->total_size;
+
+ if (l->extra_base) {
+ /* Once we have begun an extra space, all allocations go there. */
+ l->extra_size += this_size;
+ } else if (this_size + this_loc > std_size) {
+ /* This allocation does not fit in the standard space. */
+ /* Allocate the extra record. */
+ l->extra_ofs = this_loc;
+ l->total_size += sizeof(struct target_extra_context);
+
+ /* Allocate the standard end record. */
+ l->std_end_ofs = l->total_size;
+ l->total_size += sizeof(struct target_aarch64_ctx);
+
+ /* Allocate the requested record. */
+ l->extra_base = this_loc = l->total_size;
+ l->extra_size = this_size;
+ }
+ l->total_size += this_size;
+
+ return this_loc;
+}
+
+static void target_setup_frame(int usig, struct target_sigaction *ka,
+ target_siginfo_t *info, target_sigset_t *set,
+ CPUARMState *env)
+{
+ target_sigframe_layout layout = {
+ /* Begin with the size pointing to the reserved space. */
+ .total_size = offsetof(struct target_rt_sigframe,
+ uc.tuc_mcontext.__reserved),
+ };
+ int fpsimd_ofs, fr_ofs, sve_ofs = 0, vq = 0, sve_size = 0;
+ struct target_rt_sigframe *frame;
+ struct target_rt_frame_record *fr;
+ abi_ulong frame_addr, return_addr;
+
+ /* FPSIMD record is always in the standard space. */
+ fpsimd_ofs = alloc_sigframe_space(sizeof(struct target_fpsimd_context),
+ &layout);
+
+ /* SVE state needs saving only if it exists. */
+ if (arm_feature(env, ARM_FEATURE_SVE)) {
+ vq = (env->vfp.zcr_el[1] & 0xf) + 1;
+ sve_size = QEMU_ALIGN_UP(TARGET_SVE_SIG_CONTEXT_SIZE(vq), 16);
+ sve_ofs = alloc_sigframe_space(sve_size, &layout);
+ }
+
+ if (layout.extra_ofs) {
+ /* Reserve space for the extra end marker. The standard end marker
+ * will have been allocated when we allocated the extra record.
+ */
+ layout.extra_end_ofs
+ = alloc_sigframe_space(sizeof(struct target_aarch64_ctx), &layout);
+ } else {
+ /* Reserve space for the standard end marker.
+ * Do not use alloc_sigframe_space because we cheat
+ * std_size therein to reserve space for this.
+ */
+ layout.std_end_ofs = layout.total_size;
+ layout.total_size += sizeof(struct target_aarch64_ctx);
+ }
+
+ /* Reserve space for the return code. On a real system this would
+ * be within the VDSO. So, despite the name this is not a "real"
+ * record within the frame.
+ */
+ fr_ofs = layout.total_size;
+ layout.total_size += sizeof(struct target_rt_frame_record);
+
+ frame_addr = get_sigframe(ka, env, layout.total_size);
+ trace_user_setup_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
+
+ target_setup_general_frame(frame, env, set);
+ target_setup_fpsimd_record((void *)frame + fpsimd_ofs, env);
+ target_setup_end_record((void *)frame + layout.std_end_ofs);
+ if (layout.extra_ofs) {
+ target_setup_extra_record((void *)frame + layout.extra_ofs,
+ frame_addr + layout.extra_base,
+ layout.extra_size);
+ target_setup_end_record((void *)frame + layout.extra_end_ofs);
+ }
+ if (sve_ofs) {
+ target_setup_sve_record((void *)frame + sve_ofs, env, vq, sve_size);
+ }
+
+ /* Set up the stack frame for unwinding. */
+ fr = (void *)frame + fr_ofs;
+ __put_user(env->xregs[29], &fr->fp);
+ __put_user(env->xregs[30], &fr->lr);
+
+ if (ka->sa_flags & TARGET_SA_RESTORER) {
+ return_addr = ka->sa_restorer;
+ } else {
+ /*
+ * mov x8,#__NR_rt_sigreturn; svc #0
+ * Since these are instructions they need to be put as little-endian
+ * regardless of target default or current CPU endianness.
+ */
+ __put_user_e(0xd2801168, &fr->tramp[0], le);
+ __put_user_e(0xd4000001, &fr->tramp[1], le);
+ return_addr = frame_addr + fr_ofs
+ + offsetof(struct target_rt_frame_record, tramp);
+ }
+ env->xregs[0] = usig;
+ env->xregs[31] = frame_addr;
+ env->xregs[29] = frame_addr + fr_ofs;
+ env->pc = ka->_sa_handler;
+ env->xregs[30] = return_addr;
+ if (info) {
+ tswap_siginfo(&frame->info, info);
+ env->xregs[1] = frame_addr + offsetof(struct target_rt_sigframe, info);
+ env->xregs[2] = frame_addr + offsetof(struct target_rt_sigframe, uc);
+ }
+
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+
+ give_sigsegv:
+ unlock_user_struct(frame, frame_addr, 1);
+ force_sigsegv(usig);
+}
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info, target_sigset_t *set,
+ CPUARMState *env)
+{
+ target_setup_frame(sig, ka, info, set, env);
+}
+
+static void setup_frame(int sig, struct target_sigaction *ka,
+ target_sigset_t *set, CPUARMState *env)
+{
+ target_setup_frame(sig, ka, 0, set, env);
+}
+
+long do_rt_sigreturn(CPUARMState *env)
+{
+ struct target_rt_sigframe *frame = NULL;
+ abi_ulong frame_addr = env->xregs[31];
+
+ trace_user_do_rt_sigreturn(env, frame_addr);
+ if (frame_addr & 15) {
+ goto badframe;
+ }
+
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+
+ if (target_restore_sigframe(env, frame)) {
+ goto badframe;
+ }
+
+ if (do_sigaltstack(frame_addr +
+ offsetof(struct target_rt_sigframe, uc.tuc_stack),
+ 0, get_sp_from_cpustate(env)) == -EFAULT) {
+ goto badframe;
+ }
+
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+ badframe:
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
+long do_sigreturn(CPUARMState *env)
+{
+ return do_rt_sigreturn(env);
+}
+
diff --git a/linux-user/alpha/signal.inc.c b/linux-user/alpha/signal.inc.c
new file mode 100644
index 0000000000..52e379e214
--- /dev/null
+++ b/linux-user/alpha/signal.inc.c
@@ -0,0 +1,258 @@
+
+struct target_sigcontext {
+ abi_long sc_onstack;
+ abi_long sc_mask;
+ abi_long sc_pc;
+ abi_long sc_ps;
+ abi_long sc_regs[32];
+ abi_long sc_ownedfp;
+ abi_long sc_fpregs[32];
+ abi_ulong sc_fpcr;
+ abi_ulong sc_fp_control;
+ abi_ulong sc_reserved1;
+ abi_ulong sc_reserved2;
+ abi_ulong sc_ssize;
+ abi_ulong sc_sbase;
+ abi_ulong sc_traparg_a0;
+ abi_ulong sc_traparg_a1;
+ abi_ulong sc_traparg_a2;
+ abi_ulong sc_fp_trap_pc;
+ abi_ulong sc_fp_trigger_sum;
+ abi_ulong sc_fp_trigger_inst;
+};
+
+struct target_ucontext {
+ abi_ulong tuc_flags;
+ abi_ulong tuc_link;
+ abi_ulong tuc_osf_sigmask;
+ target_stack_t tuc_stack;
+ struct target_sigcontext tuc_mcontext;
+ target_sigset_t tuc_sigmask;
+};
+
+struct target_sigframe {
+ struct target_sigcontext sc;
+ unsigned int retcode[3];
+};
+
+struct target_rt_sigframe {
+ target_siginfo_t info;
+ struct target_ucontext uc;
+ unsigned int retcode[3];
+};
+
+#define INSN_MOV_R30_R16 0x47fe0410
+#define INSN_LDI_R0 0x201f0000
+#define INSN_CALLSYS 0x00000083
+
+static void setup_sigcontext(struct target_sigcontext *sc, CPUAlphaState *env,
+ abi_ulong frame_addr, target_sigset_t *set)
+{
+ int i;
+
+ __put_user(on_sig_stack(frame_addr), &sc->sc_onstack);
+ __put_user(set->sig[0], &sc->sc_mask);
+ __put_user(env->pc, &sc->sc_pc);
+ __put_user(8, &sc->sc_ps);
+
+ for (i = 0; i < 31; ++i) {
+ __put_user(env->ir[i], &sc->sc_regs[i]);
+ }
+ __put_user(0, &sc->sc_regs[31]);
+
+ for (i = 0; i < 31; ++i) {
+ __put_user(env->fir[i], &sc->sc_fpregs[i]);
+ }
+ __put_user(0, &sc->sc_fpregs[31]);
+ __put_user(cpu_alpha_load_fpcr(env), &sc->sc_fpcr);
+
+ __put_user(0, &sc->sc_traparg_a0); /* FIXME */
+ __put_user(0, &sc->sc_traparg_a1); /* FIXME */
+ __put_user(0, &sc->sc_traparg_a2); /* FIXME */
+}
+
+static void restore_sigcontext(CPUAlphaState *env,
+ struct target_sigcontext *sc)
+{
+ uint64_t fpcr;
+ int i;
+
+ __get_user(env->pc, &sc->sc_pc);
+
+ for (i = 0; i < 31; ++i) {
+ __get_user(env->ir[i], &sc->sc_regs[i]);
+ }
+ for (i = 0; i < 31; ++i) {
+ __get_user(env->fir[i], &sc->sc_fpregs[i]);
+ }
+
+ __get_user(fpcr, &sc->sc_fpcr);
+ cpu_alpha_store_fpcr(env, fpcr);
+}
+
+static inline abi_ulong get_sigframe(struct target_sigaction *sa,
+ CPUAlphaState *env,
+ unsigned long framesize)
+{
+ abi_ulong sp = env->ir[IR_SP];
+
+ /* This is the X/Open sanctioned signal stack switching. */
+ if ((sa->sa_flags & TARGET_SA_ONSTACK) != 0 && !sas_ss_flags(sp)) {
+ sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
+ }
+ return (sp - framesize) & -32;
+}
+
+static void setup_frame(int sig, struct target_sigaction *ka,
+ target_sigset_t *set, CPUAlphaState *env)
+{
+ abi_ulong frame_addr, r26;
+ struct target_sigframe *frame;
+ int err = 0;
+
+ frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
+
+ setup_sigcontext(&frame->sc, env, frame_addr, set);
+
+ if (ka->sa_restorer) {
+ r26 = ka->sa_restorer;
+ } else {
+ __put_user(INSN_MOV_R30_R16, &frame->retcode[0]);
+ __put_user(INSN_LDI_R0 + TARGET_NR_sigreturn,
+ &frame->retcode[1]);
+ __put_user(INSN_CALLSYS, &frame->retcode[2]);
+ /* imb() */
+ r26 = frame_addr;
+ }
+
+ unlock_user_struct(frame, frame_addr, 1);
+
+ if (err) {
+give_sigsegv:
+ force_sigsegv(sig);
+ return;
+ }
+
+ env->ir[IR_RA] = r26;
+ env->ir[IR_PV] = env->pc = ka->_sa_handler;
+ env->ir[IR_A0] = sig;
+ env->ir[IR_A1] = 0;
+ env->ir[IR_A2] = frame_addr + offsetof(struct target_sigframe, sc);
+ env->ir[IR_SP] = frame_addr;
+}
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPUAlphaState *env)
+{
+ abi_ulong frame_addr, r26;
+ struct target_rt_sigframe *frame;
+ int i, err = 0;
+
+ frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_rt_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
+
+ tswap_siginfo(&frame->info, info);
+
+ __put_user(0, &frame->uc.tuc_flags);
+ __put_user(0, &frame->uc.tuc_link);
+ __put_user(set->sig[0], &frame->uc.tuc_osf_sigmask);
+ __put_user(target_sigaltstack_used.ss_sp,
+ &frame->uc.tuc_stack.ss_sp);
+ __put_user(sas_ss_flags(env->ir[IR_SP]),
+ &frame->uc.tuc_stack.ss_flags);
+ __put_user(target_sigaltstack_used.ss_size,
+ &frame->uc.tuc_stack.ss_size);
+ setup_sigcontext(&frame->uc.tuc_mcontext, env, frame_addr, set);
+ for (i = 0; i < TARGET_NSIG_WORDS; ++i) {
+ __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
+ }
+
+ if (ka->sa_restorer) {
+ r26 = ka->sa_restorer;
+ } else {
+ __put_user(INSN_MOV_R30_R16, &frame->retcode[0]);
+ __put_user(INSN_LDI_R0 + TARGET_NR_rt_sigreturn,
+ &frame->retcode[1]);
+ __put_user(INSN_CALLSYS, &frame->retcode[2]);
+ /* imb(); */
+ r26 = frame_addr;
+ }
+
+ if (err) {
+give_sigsegv:
+ force_sigsegv(sig);
+ return;
+ }
+
+ env->ir[IR_RA] = r26;
+ env->ir[IR_PV] = env->pc = ka->_sa_handler;
+ env->ir[IR_A0] = sig;
+ env->ir[IR_A1] = frame_addr + offsetof(struct target_rt_sigframe, info);
+ env->ir[IR_A2] = frame_addr + offsetof(struct target_rt_sigframe, uc);
+ env->ir[IR_SP] = frame_addr;
+}
+
+long do_sigreturn(CPUAlphaState *env)
+{
+ struct target_sigcontext *sc;
+ abi_ulong sc_addr = env->ir[IR_A0];
+ target_sigset_t target_set;
+ sigset_t set;
+
+ if (!lock_user_struct(VERIFY_READ, sc, sc_addr, 1)) {
+ goto badframe;
+ }
+
+ target_sigemptyset(&target_set);
+ __get_user(target_set.sig[0], &sc->sc_mask);
+
+ target_to_host_sigset_internal(&set, &target_set);
+ set_sigmask(&set);
+
+ restore_sigcontext(env, sc);
+ unlock_user_struct(sc, sc_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+badframe:
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
+long do_rt_sigreturn(CPUAlphaState *env)
+{
+ abi_ulong frame_addr = env->ir[IR_A0];
+ struct target_rt_sigframe *frame;
+ sigset_t set;
+
+ trace_user_do_rt_sigreturn(env, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+ target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
+ set_sigmask(&set);
+
+ restore_sigcontext(env, &frame->uc.tuc_mcontext);
+ if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe,
+ uc.tuc_stack),
+ 0, env->ir[IR_SP]) == -EFAULT) {
+ goto badframe;
+ }
+
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+
+badframe:
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
diff --git a/linux-user/arm/signal.inc.c b/linux-user/arm/signal.inc.c
new file mode 100644
index 0000000000..1d6f9a1f7f
--- /dev/null
+++ b/linux-user/arm/signal.inc.c
@@ -0,0 +1,749 @@
+struct target_sigcontext {
+ abi_ulong trap_no;
+ abi_ulong error_code;
+ abi_ulong oldmask;
+ abi_ulong arm_r0;
+ abi_ulong arm_r1;
+ abi_ulong arm_r2;
+ abi_ulong arm_r3;
+ abi_ulong arm_r4;
+ abi_ulong arm_r5;
+ abi_ulong arm_r6;
+ abi_ulong arm_r7;
+ abi_ulong arm_r8;
+ abi_ulong arm_r9;
+ abi_ulong arm_r10;
+ abi_ulong arm_fp;
+ abi_ulong arm_ip;
+ abi_ulong arm_sp;
+ abi_ulong arm_lr;
+ abi_ulong arm_pc;
+ abi_ulong arm_cpsr;
+ abi_ulong fault_address;
+};
+
+struct target_ucontext_v1 {
+ abi_ulong tuc_flags;
+ abi_ulong tuc_link;
+ target_stack_t tuc_stack;
+ struct target_sigcontext tuc_mcontext;
+ target_sigset_t tuc_sigmask; /* mask last for extensibility */
+};
+
+struct target_ucontext_v2 {
+ abi_ulong tuc_flags;
+ abi_ulong tuc_link;
+ target_stack_t tuc_stack;
+ struct target_sigcontext tuc_mcontext;
+ target_sigset_t tuc_sigmask; /* mask last for extensibility */
+ char __unused[128 - sizeof(target_sigset_t)];
+ abi_ulong tuc_regspace[128] __attribute__((__aligned__(8)));
+};
+
+struct target_user_vfp {
+ uint64_t fpregs[32];
+ abi_ulong fpscr;
+};
+
+struct target_user_vfp_exc {
+ abi_ulong fpexc;
+ abi_ulong fpinst;
+ abi_ulong fpinst2;
+};
+
+struct target_vfp_sigframe {
+ abi_ulong magic;
+ abi_ulong size;
+ struct target_user_vfp ufp;
+ struct target_user_vfp_exc ufp_exc;
+} __attribute__((__aligned__(8)));
+
+struct target_iwmmxt_sigframe {
+ abi_ulong magic;
+ abi_ulong size;
+ uint64_t regs[16];
+ /* Note that not all the coprocessor control registers are stored here */
+ uint32_t wcssf;
+ uint32_t wcasf;
+ uint32_t wcgr0;
+ uint32_t wcgr1;
+ uint32_t wcgr2;
+ uint32_t wcgr3;
+} __attribute__((__aligned__(8)));
+
+#define TARGET_VFP_MAGIC 0x56465001
+#define TARGET_IWMMXT_MAGIC 0x12ef842a
+
+struct sigframe_v1
+{
+ struct target_sigcontext sc;
+ abi_ulong extramask[TARGET_NSIG_WORDS-1];
+ abi_ulong retcode;
+};
+
+struct sigframe_v2
+{
+ struct target_ucontext_v2 uc;
+ abi_ulong retcode;
+};
+
+struct rt_sigframe_v1
+{
+ abi_ulong pinfo;
+ abi_ulong puc;
+ struct target_siginfo info;
+ struct target_ucontext_v1 uc;
+ abi_ulong retcode;
+};
+
+struct rt_sigframe_v2
+{
+ struct target_siginfo info;
+ struct target_ucontext_v2 uc;
+ abi_ulong retcode;
+};
+
+#define TARGET_CONFIG_CPU_32 1
+
+/*
+ * For ARM syscalls, we encode the syscall number into the instruction.
+ */
+#define SWI_SYS_SIGRETURN (0xef000000|(TARGET_NR_sigreturn +
ARM_SYSCALL_BASE))
+#define SWI_SYS_RT_SIGRETURN (0xef000000|(TARGET_NR_rt_sigreturn +
ARM_SYSCALL_BASE))
+
+/*
+ * For Thumb syscalls, we pass the syscall number via r7. We therefore
+ * need two 16-bit instructions.
+ */
+#define SWI_THUMB_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_sigreturn))
+#define SWI_THUMB_RT_SIGRETURN (0xdf00 << 16 | 0x2700 |
(TARGET_NR_rt_sigreturn))
+
+static const abi_ulong retcodes[4] = {
+ SWI_SYS_SIGRETURN, SWI_THUMB_SIGRETURN,
+ SWI_SYS_RT_SIGRETURN, SWI_THUMB_RT_SIGRETURN
+};
+
+
+static inline int valid_user_regs(CPUARMState *regs)
+{
+ return 1;
+}
+
+static void
+setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/
+ CPUARMState *env, abi_ulong mask)
+{
+ __put_user(env->regs[0], &sc->arm_r0);
+ __put_user(env->regs[1], &sc->arm_r1);
+ __put_user(env->regs[2], &sc->arm_r2);
+ __put_user(env->regs[3], &sc->arm_r3);
+ __put_user(env->regs[4], &sc->arm_r4);
+ __put_user(env->regs[5], &sc->arm_r5);
+ __put_user(env->regs[6], &sc->arm_r6);
+ __put_user(env->regs[7], &sc->arm_r7);
+ __put_user(env->regs[8], &sc->arm_r8);
+ __put_user(env->regs[9], &sc->arm_r9);
+ __put_user(env->regs[10], &sc->arm_r10);
+ __put_user(env->regs[11], &sc->arm_fp);
+ __put_user(env->regs[12], &sc->arm_ip);
+ __put_user(env->regs[13], &sc->arm_sp);
+ __put_user(env->regs[14], &sc->arm_lr);
+ __put_user(env->regs[15], &sc->arm_pc);
+#ifdef TARGET_CONFIG_CPU_32
+ __put_user(cpsr_read(env), &sc->arm_cpsr);
+#endif
+
+ __put_user(/* current->thread.trap_no */ 0, &sc->trap_no);
+ __put_user(/* current->thread.error_code */ 0, &sc->error_code);
+ __put_user(/* current->thread.address */ 0, &sc->fault_address);
+ __put_user(mask, &sc->oldmask);
+}
+
+static inline abi_ulong
+get_sigframe(struct target_sigaction *ka, CPUARMState *regs, int framesize)
+{
+ unsigned long sp = regs->regs[13];
+
+ /*
+ * This is the X/Open sanctioned signal stack switching.
+ */
+ if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp)) {
+ sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
+ }
+ /*
+ * ATPCS B01 mandates 8-byte alignment
+ */
+ return (sp - framesize) & ~7;
+}
+
+static void
+setup_return(CPUARMState *env, struct target_sigaction *ka,
+ abi_ulong *rc, abi_ulong frame_addr, int usig, abi_ulong rc_addr)
+{
+ abi_ulong handler = ka->_sa_handler;
+ abi_ulong retcode;
+ int thumb = handler & 1;
+ uint32_t cpsr = cpsr_read(env);
+
+ cpsr &= ~CPSR_IT;
+ if (thumb) {
+ cpsr |= CPSR_T;
+ } else {
+ cpsr &= ~CPSR_T;
+ }
+
+ if (ka->sa_flags & TARGET_SA_RESTORER) {
+ retcode = ka->sa_restorer;
+ } else {
+ unsigned int idx = thumb;
+
+ if (ka->sa_flags & TARGET_SA_SIGINFO) {
+ idx += 2;
+ }
+
+ __put_user(retcodes[idx], rc);
+
+ retcode = rc_addr + thumb;
+ }
+
+ env->regs[0] = usig;
+ env->regs[13] = frame_addr;
+ env->regs[14] = retcode;
+ env->regs[15] = handler & (thumb ? ~1 : ~3);
+ cpsr_write(env, cpsr, CPSR_IT | CPSR_T, CPSRWriteByInstr);
+}
+
+static abi_ulong *setup_sigframe_v2_vfp(abi_ulong *regspace, CPUARMState *env)
+{
+ int i;
+ struct target_vfp_sigframe *vfpframe;
+ vfpframe = (struct target_vfp_sigframe *)regspace;
+ __put_user(TARGET_VFP_MAGIC, &vfpframe->magic);
+ __put_user(sizeof(*vfpframe), &vfpframe->size);
+ for (i = 0; i < 32; i++) {
+ __put_user(*aa32_vfp_dreg(env, i), &vfpframe->ufp.fpregs[i]);
+ }
+ __put_user(vfp_get_fpscr(env), &vfpframe->ufp.fpscr);
+ __put_user(env->vfp.xregs[ARM_VFP_FPEXC], &vfpframe->ufp_exc.fpexc);
+ __put_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst);
+ __put_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2);
+ return (abi_ulong*)(vfpframe+1);
+}
+
+static abi_ulong *setup_sigframe_v2_iwmmxt(abi_ulong *regspace,
+ CPUARMState *env)
+{
+ int i;
+ struct target_iwmmxt_sigframe *iwmmxtframe;
+ iwmmxtframe = (struct target_iwmmxt_sigframe *)regspace;
+ __put_user(TARGET_IWMMXT_MAGIC, &iwmmxtframe->magic);
+ __put_user(sizeof(*iwmmxtframe), &iwmmxtframe->size);
+ for (i = 0; i < 16; i++) {
+ __put_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]);
+ }
+ __put_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf);
+ __put_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf);
+ __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0);
+ __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1);
+ __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2);
+ __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3);
+ return (abi_ulong*)(iwmmxtframe+1);
+}
+
+static void setup_sigframe_v2(struct target_ucontext_v2 *uc,
+ target_sigset_t *set, CPUARMState *env)
+{
+ struct target_sigaltstack stack;
+ int i;
+ abi_ulong *regspace;
+
+ /* Clear all the bits of the ucontext we don't use. */
+ memset(uc, 0, offsetof(struct target_ucontext_v2, tuc_mcontext));
+
+ memset(&stack, 0, sizeof(stack));
+ __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp);
+ __put_user(target_sigaltstack_used.ss_size, &stack.ss_size);
+ __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags);
+ memcpy(&uc->tuc_stack, &stack, sizeof(stack));
+
+ setup_sigcontext(&uc->tuc_mcontext, env, set->sig[0]);
+ /* Save coprocessor signal frame. */
+ regspace = uc->tuc_regspace;
+ if (arm_feature(env, ARM_FEATURE_VFP)) {
+ regspace = setup_sigframe_v2_vfp(regspace, env);
+ }
+ if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
+ regspace = setup_sigframe_v2_iwmmxt(regspace, env);
+ }
+
+ /* Write terminating magic word */
+ __put_user(0, regspace);
+
+ for(i = 0; i < TARGET_NSIG_WORDS; i++) {
+ __put_user(set->sig[i], &uc->tuc_sigmask.sig[i]);
+ }
+}
+
+/* compare linux/arch/arm/kernel/signal.c:setup_frame() */
+static void setup_frame_v1(int usig, struct target_sigaction *ka,
+ target_sigset_t *set, CPUARMState *regs)
+{
+ struct sigframe_v1 *frame;
+ abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame));
+ int i;
+
+ trace_user_setup_frame(regs, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto sigsegv;
+ }
+
+ setup_sigcontext(&frame->sc, regs, set->sig[0]);
+
+ for(i = 1; i < TARGET_NSIG_WORDS; i++) {
+ __put_user(set->sig[i], &frame->extramask[i - 1]);
+ }
+
+ setup_return(regs, ka, &frame->retcode, frame_addr, usig,
+ frame_addr + offsetof(struct sigframe_v1, retcode));
+
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+sigsegv:
+ force_sigsegv(usig);
+}
+
+static void setup_frame_v2(int usig, struct target_sigaction *ka,
+ target_sigset_t *set, CPUARMState *regs)
+{
+ struct sigframe_v2 *frame;
+ abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame));
+
+ trace_user_setup_frame(regs, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto sigsegv;
+ }
+
+ setup_sigframe_v2(&frame->uc, set, regs);
+
+ setup_return(regs, ka, &frame->retcode, frame_addr, usig,
+ frame_addr + offsetof(struct sigframe_v2, retcode));
+
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+sigsegv:
+ force_sigsegv(usig);
+}
+
+static void setup_frame(int usig, struct target_sigaction *ka,
+ target_sigset_t *set, CPUARMState *regs)
+{
+ if (get_osversion() >= 0x020612) {
+ setup_frame_v2(usig, ka, set, regs);
+ } else {
+ setup_frame_v1(usig, ka, set, regs);
+ }
+}
+
+/* compare linux/arch/arm/kernel/signal.c:setup_rt_frame() */
+static void setup_rt_frame_v1(int usig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPUARMState *env)
+{
+ struct rt_sigframe_v1 *frame;
+ abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ struct target_sigaltstack stack;
+ int i;
+ abi_ulong info_addr, uc_addr;
+
+ trace_user_setup_rt_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto sigsegv;
+ }
+
+ info_addr = frame_addr + offsetof(struct rt_sigframe_v1, info);
+ __put_user(info_addr, &frame->pinfo);
+ uc_addr = frame_addr + offsetof(struct rt_sigframe_v1, uc);
+ __put_user(uc_addr, &frame->puc);
+ tswap_siginfo(&frame->info, info);
+
+ /* Clear all the bits of the ucontext we don't use. */
+ memset(&frame->uc, 0, offsetof(struct target_ucontext_v1, tuc_mcontext));
+
+ memset(&stack, 0, sizeof(stack));
+ __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp);
+ __put_user(target_sigaltstack_used.ss_size, &stack.ss_size);
+ __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags);
+ memcpy(&frame->uc.tuc_stack, &stack, sizeof(stack));
+
+ setup_sigcontext(&frame->uc.tuc_mcontext, env, set->sig[0]);
+ for(i = 0; i < TARGET_NSIG_WORDS; i++) {
+ __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
+ }
+
+ setup_return(env, ka, &frame->retcode, frame_addr, usig,
+ frame_addr + offsetof(struct rt_sigframe_v1, retcode));
+
+ env->regs[1] = info_addr;
+ env->regs[2] = uc_addr;
+
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+sigsegv:
+ force_sigsegv(usig);
+}
+
+static void setup_rt_frame_v2(int usig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPUARMState *env)
+{
+ struct rt_sigframe_v2 *frame;
+ abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ abi_ulong info_addr, uc_addr;
+
+ trace_user_setup_rt_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto sigsegv;
+ }
+
+ info_addr = frame_addr + offsetof(struct rt_sigframe_v2, info);
+ uc_addr = frame_addr + offsetof(struct rt_sigframe_v2, uc);
+ tswap_siginfo(&frame->info, info);
+
+ setup_sigframe_v2(&frame->uc, set, env);
+
+ setup_return(env, ka, &frame->retcode, frame_addr, usig,
+ frame_addr + offsetof(struct rt_sigframe_v2, retcode));
+
+ env->regs[1] = info_addr;
+ env->regs[2] = uc_addr;
+
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+sigsegv:
+ force_sigsegv(usig);
+}
+
+static void setup_rt_frame(int usig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPUARMState *env)
+{
+ if (get_osversion() >= 0x020612) {
+ setup_rt_frame_v2(usig, ka, info, set, env);
+ } else {
+ setup_rt_frame_v1(usig, ka, info, set, env);
+ }
+}
+
+static int
+restore_sigcontext(CPUARMState *env, struct target_sigcontext *sc)
+{
+ int err = 0;
+ uint32_t cpsr;
+
+ __get_user(env->regs[0], &sc->arm_r0);
+ __get_user(env->regs[1], &sc->arm_r1);
+ __get_user(env->regs[2], &sc->arm_r2);
+ __get_user(env->regs[3], &sc->arm_r3);
+ __get_user(env->regs[4], &sc->arm_r4);
+ __get_user(env->regs[5], &sc->arm_r5);
+ __get_user(env->regs[6], &sc->arm_r6);
+ __get_user(env->regs[7], &sc->arm_r7);
+ __get_user(env->regs[8], &sc->arm_r8);
+ __get_user(env->regs[9], &sc->arm_r9);
+ __get_user(env->regs[10], &sc->arm_r10);
+ __get_user(env->regs[11], &sc->arm_fp);
+ __get_user(env->regs[12], &sc->arm_ip);
+ __get_user(env->regs[13], &sc->arm_sp);
+ __get_user(env->regs[14], &sc->arm_lr);
+ __get_user(env->regs[15], &sc->arm_pc);
+#ifdef TARGET_CONFIG_CPU_32
+ __get_user(cpsr, &sc->arm_cpsr);
+ cpsr_write(env, cpsr, CPSR_USER | CPSR_EXEC, CPSRWriteByInstr);
+#endif
+
+ err |= !valid_user_regs(env);
+
+ return err;
+}
+
+static long do_sigreturn_v1(CPUARMState *env)
+{
+ abi_ulong frame_addr;
+ struct sigframe_v1 *frame = NULL;
+ target_sigset_t set;
+ sigset_t host_set;
+ int i;
+
+ /*
+ * Since we stacked the signal on a 64-bit boundary,
+ * then 'sp' should be word aligned here. If it's
+ * not, then the user is trying to mess with us.
+ */
+ frame_addr = env->regs[13];
+ trace_user_do_sigreturn(env, frame_addr);
+ if (frame_addr & 7) {
+ goto badframe;
+ }
+
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+
+ __get_user(set.sig[0], &frame->sc.oldmask);
+ for(i = 1; i < TARGET_NSIG_WORDS; i++) {
+ __get_user(set.sig[i], &frame->extramask[i - 1]);
+ }
+
+ target_to_host_sigset_internal(&host_set, &set);
+ set_sigmask(&host_set);
+
+ if (restore_sigcontext(env, &frame->sc)) {
+ goto badframe;
+ }
+
+#if 0
+ /* Send SIGTRAP if we're single-stepping */
+ if (ptrace_cancel_bpt(current))
+ send_sig(SIGTRAP, current, 1);
+#endif
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+badframe:
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
+static abi_ulong *restore_sigframe_v2_vfp(CPUARMState *env, abi_ulong
*regspace)
+{
+ int i;
+ abi_ulong magic, sz;
+ uint32_t fpscr, fpexc;
+ struct target_vfp_sigframe *vfpframe;
+ vfpframe = (struct target_vfp_sigframe *)regspace;
+
+ __get_user(magic, &vfpframe->magic);
+ __get_user(sz, &vfpframe->size);
+ if (magic != TARGET_VFP_MAGIC || sz != sizeof(*vfpframe)) {
+ return 0;
+ }
+ for (i = 0; i < 32; i++) {
+ __get_user(*aa32_vfp_dreg(env, i), &vfpframe->ufp.fpregs[i]);
+ }
+ __get_user(fpscr, &vfpframe->ufp.fpscr);
+ vfp_set_fpscr(env, fpscr);
+ __get_user(fpexc, &vfpframe->ufp_exc.fpexc);
+ /* Sanitise FPEXC: ensure VFP is enabled, FPINST2 is invalid
+ * and the exception flag is cleared
+ */
+ fpexc |= (1 << 30);
+ fpexc &= ~((1 << 31) | (1 << 28));
+ env->vfp.xregs[ARM_VFP_FPEXC] = fpexc;
+ __get_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst);
+ __get_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2);
+ return (abi_ulong*)(vfpframe + 1);
+}
+
+static abi_ulong *restore_sigframe_v2_iwmmxt(CPUARMState *env,
+ abi_ulong *regspace)
+{
+ int i;
+ abi_ulong magic, sz;
+ struct target_iwmmxt_sigframe *iwmmxtframe;
+ iwmmxtframe = (struct target_iwmmxt_sigframe *)regspace;
+
+ __get_user(magic, &iwmmxtframe->magic);
+ __get_user(sz, &iwmmxtframe->size);
+ if (magic != TARGET_IWMMXT_MAGIC || sz != sizeof(*iwmmxtframe)) {
+ return 0;
+ }
+ for (i = 0; i < 16; i++) {
+ __get_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]);
+ }
+ __get_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf);
+ __get_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf);
+ __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0);
+ __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1);
+ __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2);
+ __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3);
+ return (abi_ulong*)(iwmmxtframe + 1);
+}
+
+static int do_sigframe_return_v2(CPUARMState *env,
+ target_ulong context_addr,
+ struct target_ucontext_v2 *uc)
+{
+ sigset_t host_set;
+ abi_ulong *regspace;
+
+ target_to_host_sigset(&host_set, &uc->tuc_sigmask);
+ set_sigmask(&host_set);
+
+ if (restore_sigcontext(env, &uc->tuc_mcontext))
+ return 1;
+
+ /* Restore coprocessor signal frame */
+ regspace = uc->tuc_regspace;
+ if (arm_feature(env, ARM_FEATURE_VFP)) {
+ regspace = restore_sigframe_v2_vfp(env, regspace);
+ if (!regspace) {
+ return 1;
+ }
+ }
+ if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
+ regspace = restore_sigframe_v2_iwmmxt(env, regspace);
+ if (!regspace) {
+ return 1;
+ }
+ }
+
+ if (do_sigaltstack(context_addr
+ + offsetof(struct target_ucontext_v2, tuc_stack),
+ 0, get_sp_from_cpustate(env)) == -EFAULT) {
+ return 1;
+ }
+
+#if 0
+ /* Send SIGTRAP if we're single-stepping */
+ if (ptrace_cancel_bpt(current))
+ send_sig(SIGTRAP, current, 1);
+#endif
+
+ return 0;
+}
+
+static long do_sigreturn_v2(CPUARMState *env)
+{
+ abi_ulong frame_addr;
+ struct sigframe_v2 *frame = NULL;
+
+ /*
+ * Since we stacked the signal on a 64-bit boundary,
+ * then 'sp' should be word aligned here. If it's
+ * not, then the user is trying to mess with us.
+ */
+ frame_addr = env->regs[13];
+ trace_user_do_sigreturn(env, frame_addr);
+ if (frame_addr & 7) {
+ goto badframe;
+ }
+
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+
+ if (do_sigframe_return_v2(env,
+ frame_addr
+ + offsetof(struct sigframe_v2, uc),
+ &frame->uc)) {
+ goto badframe;
+ }
+
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+badframe:
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
+long do_sigreturn(CPUARMState *env)
+{
+ if (get_osversion() >= 0x020612) {
+ return do_sigreturn_v2(env);
+ } else {
+ return do_sigreturn_v1(env);
+ }
+}
+
+static long do_rt_sigreturn_v1(CPUARMState *env)
+{
+ abi_ulong frame_addr;
+ struct rt_sigframe_v1 *frame = NULL;
+ sigset_t host_set;
+
+ /*
+ * Since we stacked the signal on a 64-bit boundary,
+ * then 'sp' should be word aligned here. If it's
+ * not, then the user is trying to mess with us.
+ */
+ frame_addr = env->regs[13];
+ trace_user_do_rt_sigreturn(env, frame_addr);
+ if (frame_addr & 7) {
+ goto badframe;
+ }
+
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+
+ target_to_host_sigset(&host_set, &frame->uc.tuc_sigmask);
+ set_sigmask(&host_set);
+
+ if (restore_sigcontext(env, &frame->uc.tuc_mcontext)) {
+ goto badframe;
+ }
+
+ if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe_v1,
uc.tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT)
+ goto badframe;
+
+#if 0
+ /* Send SIGTRAP if we're single-stepping */
+ if (ptrace_cancel_bpt(current))
+ send_sig(SIGTRAP, current, 1);
+#endif
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+badframe:
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
+static long do_rt_sigreturn_v2(CPUARMState *env)
+{
+ abi_ulong frame_addr;
+ struct rt_sigframe_v2 *frame = NULL;
+
+ /*
+ * Since we stacked the signal on a 64-bit boundary,
+ * then 'sp' should be word aligned here. If it's
+ * not, then the user is trying to mess with us.
+ */
+ frame_addr = env->regs[13];
+ trace_user_do_rt_sigreturn(env, frame_addr);
+ if (frame_addr & 7) {
+ goto badframe;
+ }
+
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+
+ if (do_sigframe_return_v2(env,
+ frame_addr
+ + offsetof(struct rt_sigframe_v2, uc),
+ &frame->uc)) {
+ goto badframe;
+ }
+
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+badframe:
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
+long do_rt_sigreturn(CPUARMState *env)
+{
+ if (get_osversion() >= 0x020612) {
+ return do_rt_sigreturn_v2(env);
+ } else {
+ return do_rt_sigreturn_v1(env);
+ }
+}
+
diff --git a/linux-user/cris/signal.inc.c b/linux-user/cris/signal.inc.c
new file mode 100644
index 0000000000..3f68793727
--- /dev/null
+++ b/linux-user/cris/signal.inc.c
@@ -0,0 +1,166 @@
+
+struct target_sigcontext {
+ struct target_pt_regs regs; /* needs to be first */
+ uint32_t oldmask;
+ uint32_t usp; /* usp before stacking this gunk on it */
+};
+
+/* Signal frames. */
+struct target_signal_frame {
+ struct target_sigcontext sc;
+ uint32_t extramask[TARGET_NSIG_WORDS - 1];
+ uint16_t retcode[4]; /* Trampoline code. */
+};
+
+struct rt_signal_frame {
+ siginfo_t *pinfo;
+ void *puc;
+ siginfo_t info;
+ ucontext_t uc;
+ uint16_t retcode[4]; /* Trampoline code. */
+};
+
+static void setup_sigcontext(struct target_sigcontext *sc, CPUCRISState *env)
+{
+ __put_user(env->regs[0], &sc->regs.r0);
+ __put_user(env->regs[1], &sc->regs.r1);
+ __put_user(env->regs[2], &sc->regs.r2);
+ __put_user(env->regs[3], &sc->regs.r3);
+ __put_user(env->regs[4], &sc->regs.r4);
+ __put_user(env->regs[5], &sc->regs.r5);
+ __put_user(env->regs[6], &sc->regs.r6);
+ __put_user(env->regs[7], &sc->regs.r7);
+ __put_user(env->regs[8], &sc->regs.r8);
+ __put_user(env->regs[9], &sc->regs.r9);
+ __put_user(env->regs[10], &sc->regs.r10);
+ __put_user(env->regs[11], &sc->regs.r11);
+ __put_user(env->regs[12], &sc->regs.r12);
+ __put_user(env->regs[13], &sc->regs.r13);
+ __put_user(env->regs[14], &sc->usp);
+ __put_user(env->regs[15], &sc->regs.acr);
+ __put_user(env->pregs[PR_MOF], &sc->regs.mof);
+ __put_user(env->pregs[PR_SRP], &sc->regs.srp);
+ __put_user(env->pc, &sc->regs.erp);
+}
+
+static void restore_sigcontext(struct target_sigcontext *sc, CPUCRISState *env)
+{
+ __get_user(env->regs[0], &sc->regs.r0);
+ __get_user(env->regs[1], &sc->regs.r1);
+ __get_user(env->regs[2], &sc->regs.r2);
+ __get_user(env->regs[3], &sc->regs.r3);
+ __get_user(env->regs[4], &sc->regs.r4);
+ __get_user(env->regs[5], &sc->regs.r5);
+ __get_user(env->regs[6], &sc->regs.r6);
+ __get_user(env->regs[7], &sc->regs.r7);
+ __get_user(env->regs[8], &sc->regs.r8);
+ __get_user(env->regs[9], &sc->regs.r9);
+ __get_user(env->regs[10], &sc->regs.r10);
+ __get_user(env->regs[11], &sc->regs.r11);
+ __get_user(env->regs[12], &sc->regs.r12);
+ __get_user(env->regs[13], &sc->regs.r13);
+ __get_user(env->regs[14], &sc->usp);
+ __get_user(env->regs[15], &sc->regs.acr);
+ __get_user(env->pregs[PR_MOF], &sc->regs.mof);
+ __get_user(env->pregs[PR_SRP], &sc->regs.srp);
+ __get_user(env->pc, &sc->regs.erp);
+}
+
+static abi_ulong get_sigframe(CPUCRISState *env, int framesize)
+{
+ abi_ulong sp;
+ /* Align the stack downwards to 4. */
+ sp = (env->regs[R_SP] & ~3);
+ return sp - framesize;
+}
+
+static void setup_frame(int sig, struct target_sigaction *ka,
+ target_sigset_t *set, CPUCRISState *env)
+{
+ struct target_signal_frame *frame;
+ abi_ulong frame_addr;
+ int i;
+
+ frame_addr = get_sigframe(env, sizeof *frame);
+ trace_user_setup_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
+ goto badframe;
+
+ /*
+ * The CRIS signal return trampoline. A real linux/CRIS kernel doesn't
+ * use this trampoline anymore but it sets it up for GDB.
+ * In QEMU, using the trampoline simplifies things a bit so we use it.
+ *
+ * This is movu.w __NR_sigreturn, r9; break 13;
+ */
+ __put_user(0x9c5f, frame->retcode+0);
+ __put_user(TARGET_NR_sigreturn,
+ frame->retcode + 1);
+ __put_user(0xe93d, frame->retcode + 2);
+
+ /* Save the mask. */
+ __put_user(set->sig[0], &frame->sc.oldmask);
+
+ for(i = 1; i < TARGET_NSIG_WORDS; i++) {
+ __put_user(set->sig[i], &frame->extramask[i - 1]);
+ }
+
+ setup_sigcontext(&frame->sc, env);
+
+ /* Move the stack and setup the arguments for the handler. */
+ env->regs[R_SP] = frame_addr;
+ env->regs[10] = sig;
+ env->pc = (unsigned long) ka->_sa_handler;
+ /* Link SRP so the guest returns through the trampoline. */
+ env->pregs[PR_SRP] = frame_addr + offsetof(typeof(*frame), retcode);
+
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+badframe:
+ force_sigsegv(sig);
+}
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPUCRISState *env)
+{
+ fprintf(stderr, "CRIS setup_rt_frame: not implemented\n");
+}
+
+long do_sigreturn(CPUCRISState *env)
+{
+ struct target_signal_frame *frame;
+ abi_ulong frame_addr;
+ target_sigset_t target_set;
+ sigset_t set;
+ int i;
+
+ frame_addr = env->regs[R_SP];
+ trace_user_do_sigreturn(env, frame_addr);
+ /* Make sure the guest isn't playing games. */
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+
+ /* Restore blocked signals */
+ __get_user(target_set.sig[0], &frame->sc.oldmask);
+ for(i = 1; i < TARGET_NSIG_WORDS; i++) {
+ __get_user(target_set.sig[i], &frame->extramask[i - 1]);
+ }
+ target_to_host_sigset_internal(&set, &target_set);
+ set_sigmask(&set);
+
+ restore_sigcontext(&frame->sc, env);
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+badframe:
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
+long do_rt_sigreturn(CPUCRISState *env)
+{
+ trace_user_do_rt_sigreturn(env, 0);
+ fprintf(stderr, "CRIS do_rt_sigreturn: not implemented\n");
+ return -TARGET_ENOSYS;
+}
diff --git a/linux-user/hppa/signal.inc.c b/linux-user/hppa/signal.inc.c
new file mode 100644
index 0000000000..8204f88af3
--- /dev/null
+++ b/linux-user/hppa/signal.inc.c
@@ -0,0 +1,188 @@
+
+struct target_sigcontext {
+ abi_ulong sc_flags;
+ abi_ulong sc_gr[32];
+ uint64_t sc_fr[32];
+ abi_ulong sc_iasq[2];
+ abi_ulong sc_iaoq[2];
+ abi_ulong sc_sar;
+};
+
+struct target_ucontext {
+ abi_uint tuc_flags;
+ abi_ulong tuc_link;
+ target_stack_t tuc_stack;
+ abi_uint pad[1];
+ struct target_sigcontext tuc_mcontext;
+ target_sigset_t tuc_sigmask;
+};
+
+struct target_rt_sigframe {
+ abi_uint tramp[9];
+ target_siginfo_t info;
+ struct target_ucontext uc;
+ /* hidden location of upper halves of pa2.0 64-bit gregs */
+};
+
+static void setup_sigcontext(struct target_sigcontext *sc, CPUArchState *env)
+{
+ int flags = 0;
+ int i;
+
+ /* ??? if on_sig_stack, flags |= 1 (PARISC_SC_FLAG_ONSTACK). */
+
+ if (env->iaoq_f < TARGET_PAGE_SIZE) {
+ /* In the gateway page, executing a syscall. */
+ flags |= 2; /* PARISC_SC_FLAG_IN_SYSCALL */
+ __put_user(env->gr[31], &sc->sc_iaoq[0]);
+ __put_user(env->gr[31] + 4, &sc->sc_iaoq[1]);
+ } else {
+ __put_user(env->iaoq_f, &sc->sc_iaoq[0]);
+ __put_user(env->iaoq_b, &sc->sc_iaoq[1]);
+ }
+ __put_user(0, &sc->sc_iasq[0]);
+ __put_user(0, &sc->sc_iasq[1]);
+ __put_user(flags, &sc->sc_flags);
+
+ __put_user(cpu_hppa_get_psw(env), &sc->sc_gr[0]);
+ for (i = 1; i < 32; ++i) {
+ __put_user(env->gr[i], &sc->sc_gr[i]);
+ }
+
+ __put_user((uint64_t)env->fr0_shadow << 32, &sc->sc_fr[0]);
+ for (i = 1; i < 32; ++i) {
+ __put_user(env->fr[i], &sc->sc_fr[i]);
+ }
+
+ __put_user(env->cr[CR_SAR], &sc->sc_sar);
+}
+
+static void restore_sigcontext(CPUArchState *env, struct target_sigcontext *sc)
+{
+ target_ulong psw;
+ int i;
+
+ __get_user(psw, &sc->sc_gr[0]);
+ cpu_hppa_put_psw(env, psw);
+
+ for (i = 1; i < 32; ++i) {
+ __get_user(env->gr[i], &sc->sc_gr[i]);
+ }
+ for (i = 0; i < 32; ++i) {
+ __get_user(env->fr[i], &sc->sc_fr[i]);
+ }
+ cpu_hppa_loaded_fr0(env);
+
+ __get_user(env->iaoq_f, &sc->sc_iaoq[0]);
+ __get_user(env->iaoq_b, &sc->sc_iaoq[1]);
+ __get_user(env->cr[CR_SAR], &sc->sc_sar);
+}
+
+/* No, this doesn't look right, but it's copied straight from the kernel. */
+#define PARISC_RT_SIGFRAME_SIZE32 \
+ ((sizeof(struct target_rt_sigframe) + 48 + 64) & -64)
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPUArchState *env)
+{
+ abi_ulong frame_addr, sp, haddr;
+ struct target_rt_sigframe *frame;
+ int i;
+
+ sp = env->gr[30];
+ if (ka->sa_flags & TARGET_SA_ONSTACK) {
+ if (sas_ss_flags(sp) == 0) {
+ sp = (target_sigaltstack_used.ss_sp + 0x7f) & ~0x3f;
+ }
+ }
+ frame_addr = QEMU_ALIGN_UP(sp, 64);
+ sp = frame_addr + PARISC_RT_SIGFRAME_SIZE32;
+
+ trace_user_setup_rt_frame(env, frame_addr);
+
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
+
+ tswap_siginfo(&frame->info, info);
+ frame->uc.tuc_flags = 0;
+ frame->uc.tuc_link = 0;
+
+ __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
+ __put_user(sas_ss_flags(get_sp_from_cpustate(env)),
+ &frame->uc.tuc_stack.ss_flags);
+ __put_user(target_sigaltstack_used.ss_size,
+ &frame->uc.tuc_stack.ss_size);
+
+ for (i = 0; i < TARGET_NSIG_WORDS; i++) {
+ __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
+ }
+
+ setup_sigcontext(&frame->uc.tuc_mcontext, env);
+
+ __put_user(0x34190000, frame->tramp + 0); /* ldi 0,%r25 */
+ __put_user(0x3414015a, frame->tramp + 1); /* ldi __NR_rt_sigreturn,%r20 */
+ __put_user(0xe4008200, frame->tramp + 2); /* be,l 0x100(%sr2,%r0) */
+ __put_user(0x08000240, frame->tramp + 3); /* nop */
+
+ unlock_user_struct(frame, frame_addr, 1);
+
+ env->gr[2] = h2g(frame->tramp);
+ env->gr[30] = sp;
+ env->gr[26] = sig;
+ env->gr[25] = h2g(&frame->info);
+ env->gr[24] = h2g(&frame->uc);
+
+ haddr = ka->_sa_handler;
+ if (haddr & 2) {
+ /* Function descriptor. */
+ target_ulong *fdesc, dest;
+
+ haddr &= -4;
+ if (!lock_user_struct(VERIFY_READ, fdesc, haddr, 1)) {
+ goto give_sigsegv;
+ }
+ __get_user(dest, fdesc);
+ __get_user(env->gr[19], fdesc + 1);
+ unlock_user_struct(fdesc, haddr, 1);
+ haddr = dest;
+ }
+ env->iaoq_f = haddr;
+ env->iaoq_b = haddr + 4;
+ return;
+
+ give_sigsegv:
+ force_sigsegv(sig);
+}
+
+long do_rt_sigreturn(CPUArchState *env)
+{
+ abi_ulong frame_addr = env->gr[30] - PARISC_RT_SIGFRAME_SIZE32;
+ struct target_rt_sigframe *frame;
+ sigset_t set;
+
+ trace_user_do_rt_sigreturn(env, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+ target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
+ set_sigmask(&set);
+
+ restore_sigcontext(env, &frame->uc.tuc_mcontext);
+ unlock_user_struct(frame, frame_addr, 0);
+
+ if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe,
+ uc.tuc_stack),
+ 0, env->gr[30]) == -EFAULT) {
+ goto badframe;
+ }
+
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+ badframe:
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
diff --git a/linux-user/i386/signal.inc.c b/linux-user/i386/signal.inc.c
new file mode 100644
index 0000000000..c522c449ae
--- /dev/null
+++ b/linux-user/i386/signal.inc.c
@@ -0,0 +1,579 @@
+/* from the Linux kernel - /arch/x86/include/uapi/asm/sigcontext.h */
+
+struct target_fpreg {
+ uint16_t significand[4];
+ uint16_t exponent;
+};
+
+struct target_fpxreg {
+ uint16_t significand[4];
+ uint16_t exponent;
+ uint16_t padding[3];
+};
+
+struct target_xmmreg {
+ uint32_t element[4];
+};
+
+struct target_fpstate_32 {
+ /* Regular FPU environment */
+ uint32_t cw;
+ uint32_t sw;
+ uint32_t tag;
+ uint32_t ipoff;
+ uint32_t cssel;
+ uint32_t dataoff;
+ uint32_t datasel;
+ struct target_fpreg st[8];
+ uint16_t status;
+ uint16_t magic; /* 0xffff = regular FPU data only */
+
+ /* FXSR FPU environment */
+ uint32_t _fxsr_env[6]; /* FXSR FPU env is ignored */
+ uint32_t mxcsr;
+ uint32_t reserved;
+ struct target_fpxreg fxsr_st[8]; /* FXSR FPU reg data is ignored */
+ struct target_xmmreg xmm[8];
+ uint32_t padding[56];
+};
+
+struct target_fpstate_64 {
+ /* FXSAVE format */
+ uint16_t cw;
+ uint16_t sw;
+ uint16_t twd;
+ uint16_t fop;
+ uint64_t rip;
+ uint64_t rdp;
+ uint32_t mxcsr;
+ uint32_t mxcsr_mask;
+ uint32_t st_space[32];
+ uint32_t xmm_space[64];
+ uint32_t reserved[24];
+};
+
+#ifndef TARGET_X86_64
+# define target_fpstate target_fpstate_32
+#else
+# define target_fpstate target_fpstate_64
+#endif
+
+struct target_sigcontext_32 {
+ uint16_t gs, __gsh;
+ uint16_t fs, __fsh;
+ uint16_t es, __esh;
+ uint16_t ds, __dsh;
+ uint32_t edi;
+ uint32_t esi;
+ uint32_t ebp;
+ uint32_t esp;
+ uint32_t ebx;
+ uint32_t edx;
+ uint32_t ecx;
+ uint32_t eax;
+ uint32_t trapno;
+ uint32_t err;
+ uint32_t eip;
+ uint16_t cs, __csh;
+ uint32_t eflags;
+ uint32_t esp_at_signal;
+ uint16_t ss, __ssh;
+ uint32_t fpstate; /* pointer */
+ uint32_t oldmask;
+ uint32_t cr2;
+};
+
+struct target_sigcontext_64 {
+ uint64_t r8;
+ uint64_t r9;
+ uint64_t r10;
+ uint64_t r11;
+ uint64_t r12;
+ uint64_t r13;
+ uint64_t r14;
+ uint64_t r15;
+
+ uint64_t rdi;
+ uint64_t rsi;
+ uint64_t rbp;
+ uint64_t rbx;
+ uint64_t rdx;
+ uint64_t rax;
+ uint64_t rcx;
+ uint64_t rsp;
+ uint64_t rip;
+
+ uint64_t eflags;
+
+ uint16_t cs;
+ uint16_t gs;
+ uint16_t fs;
+ uint16_t ss;
+
+ uint64_t err;
+ uint64_t trapno;
+ uint64_t oldmask;
+ uint64_t cr2;
+
+ uint64_t fpstate; /* pointer */
+ uint64_t padding[8];
+};
+
+#ifndef TARGET_X86_64
+# define target_sigcontext target_sigcontext_32
+#else
+# define target_sigcontext target_sigcontext_64
+#endif
+
+/* see Linux/include/uapi/asm-generic/ucontext.h */
+struct target_ucontext {
+ abi_ulong tuc_flags;
+ abi_ulong tuc_link;
+ target_stack_t tuc_stack;
+ struct target_sigcontext tuc_mcontext;
+ target_sigset_t tuc_sigmask; /* mask last for extensibility */
+};
+
+#ifndef TARGET_X86_64
+struct sigframe {
+ abi_ulong pretcode;
+ int sig;
+ struct target_sigcontext sc;
+ struct target_fpstate fpstate;
+ abi_ulong extramask[TARGET_NSIG_WORDS-1];
+ char retcode[8];
+};
+
+struct rt_sigframe {
+ abi_ulong pretcode;
+ int sig;
+ abi_ulong pinfo;
+ abi_ulong puc;
+ struct target_siginfo info;
+ struct target_ucontext uc;
+ struct target_fpstate fpstate;
+ char retcode[8];
+};
+
+#else
+
+struct rt_sigframe {
+ abi_ulong pretcode;
+ struct target_ucontext uc;
+ struct target_siginfo info;
+ struct target_fpstate fpstate;
+};
+
+#endif
+
+/*
+ * Set up a signal frame.
+ */
+
+/* XXX: save x87 state */
+static void setup_sigcontext(struct target_sigcontext *sc,
+ struct target_fpstate *fpstate, CPUX86State *env, abi_ulong mask,
+ abi_ulong fpstate_addr)
+{
+ CPUState *cs = CPU(x86_env_get_cpu(env));
+#ifndef TARGET_X86_64
+ uint16_t magic;
+
+ /* already locked in setup_frame() */
+ __put_user(env->segs[R_GS].selector, (unsigned int *)&sc->gs);
+ __put_user(env->segs[R_FS].selector, (unsigned int *)&sc->fs);
+ __put_user(env->segs[R_ES].selector, (unsigned int *)&sc->es);
+ __put_user(env->segs[R_DS].selector, (unsigned int *)&sc->ds);
+ __put_user(env->regs[R_EDI], &sc->edi);
+ __put_user(env->regs[R_ESI], &sc->esi);
+ __put_user(env->regs[R_EBP], &sc->ebp);
+ __put_user(env->regs[R_ESP], &sc->esp);
+ __put_user(env->regs[R_EBX], &sc->ebx);
+ __put_user(env->regs[R_EDX], &sc->edx);
+ __put_user(env->regs[R_ECX], &sc->ecx);
+ __put_user(env->regs[R_EAX], &sc->eax);
+ __put_user(cs->exception_index, &sc->trapno);
+ __put_user(env->error_code, &sc->err);
+ __put_user(env->eip, &sc->eip);
+ __put_user(env->segs[R_CS].selector, (unsigned int *)&sc->cs);
+ __put_user(env->eflags, &sc->eflags);
+ __put_user(env->regs[R_ESP], &sc->esp_at_signal);
+ __put_user(env->segs[R_SS].selector, (unsigned int *)&sc->ss);
+
+ cpu_x86_fsave(env, fpstate_addr, 1);
+ fpstate->status = fpstate->sw;
+ magic = 0xffff;
+ __put_user(magic, &fpstate->magic);
+ __put_user(fpstate_addr, &sc->fpstate);
+
+ /* non-iBCS2 extensions.. */
+ __put_user(mask, &sc->oldmask);
+ __put_user(env->cr[2], &sc->cr2);
+#else
+ __put_user(env->regs[R_EDI], &sc->rdi);
+ __put_user(env->regs[R_ESI], &sc->rsi);
+ __put_user(env->regs[R_EBP], &sc->rbp);
+ __put_user(env->regs[R_ESP], &sc->rsp);
+ __put_user(env->regs[R_EBX], &sc->rbx);
+ __put_user(env->regs[R_EDX], &sc->rdx);
+ __put_user(env->regs[R_ECX], &sc->rcx);
+ __put_user(env->regs[R_EAX], &sc->rax);
+
+ __put_user(env->regs[8], &sc->r8);
+ __put_user(env->regs[9], &sc->r9);
+ __put_user(env->regs[10], &sc->r10);
+ __put_user(env->regs[11], &sc->r11);
+ __put_user(env->regs[12], &sc->r12);
+ __put_user(env->regs[13], &sc->r13);
+ __put_user(env->regs[14], &sc->r14);
+ __put_user(env->regs[15], &sc->r15);
+
+ __put_user(cs->exception_index, &sc->trapno);
+ __put_user(env->error_code, &sc->err);
+ __put_user(env->eip, &sc->rip);
+
+ __put_user(env->eflags, &sc->eflags);
+ __put_user(env->segs[R_CS].selector, &sc->cs);
+ __put_user((uint16_t)0, &sc->gs);
+ __put_user((uint16_t)0, &sc->fs);
+ __put_user(env->segs[R_SS].selector, &sc->ss);
+
+ __put_user(mask, &sc->oldmask);
+ __put_user(env->cr[2], &sc->cr2);
+
+ /* fpstate_addr must be 16 byte aligned for fxsave */
+ assert(!(fpstate_addr & 0xf));
+
+ cpu_x86_fxsave(env, fpstate_addr);
+ __put_user(fpstate_addr, &sc->fpstate);
+#endif
+}
+
+/*
+ * Determine which stack to use..
+ */
+
+static inline abi_ulong
+get_sigframe(struct target_sigaction *ka, CPUX86State *env, size_t frame_size)
+{
+ unsigned long esp;
+
+ /* Default to using normal stack */
+ esp = env->regs[R_ESP];
+#ifdef TARGET_X86_64
+ esp -= 128; /* this is the redzone */
+#endif
+
+ /* This is the X/Open sanctioned signal stack switching. */
+ if (ka->sa_flags & TARGET_SA_ONSTACK) {
+ if (sas_ss_flags(esp) == 0) {
+ esp = target_sigaltstack_used.ss_sp +
target_sigaltstack_used.ss_size;
+ }
+ } else {
+#ifndef TARGET_X86_64
+ /* This is the legacy signal stack switching. */
+ if ((env->segs[R_SS].selector & 0xffff) != __USER_DS &&
+ !(ka->sa_flags & TARGET_SA_RESTORER) &&
+ ka->sa_restorer) {
+ esp = (unsigned long) ka->sa_restorer;
+ }
+#endif
+ }
+
+#ifndef TARGET_X86_64
+ return (esp - frame_size) & -8ul;
+#else
+ return ((esp - frame_size) & (~15ul)) - 8;
+#endif
+}
+
+#ifndef TARGET_X86_64
+/* compare linux/arch/i386/kernel/signal.c:setup_frame() */
+static void setup_frame(int sig, struct target_sigaction *ka,
+ target_sigset_t *set, CPUX86State *env)
+{
+ abi_ulong frame_addr;
+ struct sigframe *frame;
+ int i;
+
+ frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_frame(env, frame_addr);
+
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
+ goto give_sigsegv;
+
+ __put_user(sig, &frame->sig);
+
+ setup_sigcontext(&frame->sc, &frame->fpstate, env, set->sig[0],
+ frame_addr + offsetof(struct sigframe, fpstate));
+
+ for(i = 1; i < TARGET_NSIG_WORDS; i++) {
+ __put_user(set->sig[i], &frame->extramask[i - 1]);
+ }
+
+ /* Set up to return from userspace. If provided, use a stub
+ already in userspace. */
+ if (ka->sa_flags & TARGET_SA_RESTORER) {
+ __put_user(ka->sa_restorer, &frame->pretcode);
+ } else {
+ uint16_t val16;
+ abi_ulong retcode_addr;
+ retcode_addr = frame_addr + offsetof(struct sigframe, retcode);
+ __put_user(retcode_addr, &frame->pretcode);
+ /* This is popl %eax ; movl $,%eax ; int $0x80 */
+ val16 = 0xb858;
+ __put_user(val16, (uint16_t *)(frame->retcode+0));
+ __put_user(TARGET_NR_sigreturn, (int *)(frame->retcode+2));
+ val16 = 0x80cd;
+ __put_user(val16, (uint16_t *)(frame->retcode+6));
+ }
+
+ /* Set up registers for signal handler */
+ env->regs[R_ESP] = frame_addr;
+ env->eip = ka->_sa_handler;
+
+ cpu_x86_load_seg(env, R_DS, __USER_DS);
+ cpu_x86_load_seg(env, R_ES, __USER_DS);
+ cpu_x86_load_seg(env, R_SS, __USER_DS);
+ cpu_x86_load_seg(env, R_CS, __USER_CS);
+ env->eflags &= ~TF_MASK;
+
+ unlock_user_struct(frame, frame_addr, 1);
+
+ return;
+
+give_sigsegv:
+ force_sigsegv(sig);
+}
+#endif
+
+/* compare linux/arch/x86/kernel/signal.c:setup_rt_frame() */
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPUX86State *env)
+{
+ abi_ulong frame_addr;
+#ifndef TARGET_X86_64
+ abi_ulong addr;
+#endif
+ struct rt_sigframe *frame;
+ int i;
+
+ frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_rt_frame(env, frame_addr);
+
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
+ goto give_sigsegv;
+
+ /* These fields are only in rt_sigframe on 32 bit */
+#ifndef TARGET_X86_64
+ __put_user(sig, &frame->sig);
+ addr = frame_addr + offsetof(struct rt_sigframe, info);
+ __put_user(addr, &frame->pinfo);
+ addr = frame_addr + offsetof(struct rt_sigframe, uc);
+ __put_user(addr, &frame->puc);
+#endif
+ if (ka->sa_flags & TARGET_SA_SIGINFO) {
+ tswap_siginfo(&frame->info, info);
+ }
+
+ /* Create the ucontext. */
+ __put_user(0, &frame->uc.tuc_flags);
+ __put_user(0, &frame->uc.tuc_link);
+ __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
+ __put_user(sas_ss_flags(get_sp_from_cpustate(env)),
+ &frame->uc.tuc_stack.ss_flags);
+ __put_user(target_sigaltstack_used.ss_size,
+ &frame->uc.tuc_stack.ss_size);
+ setup_sigcontext(&frame->uc.tuc_mcontext, &frame->fpstate, env,
+ set->sig[0], frame_addr + offsetof(struct rt_sigframe, fpstate));
+
+ for(i = 0; i < TARGET_NSIG_WORDS; i++) {
+ __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
+ }
+
+ /* Set up to return from userspace. If provided, use a stub
+ already in userspace. */
+#ifndef TARGET_X86_64
+ if (ka->sa_flags & TARGET_SA_RESTORER) {
+ __put_user(ka->sa_restorer, &frame->pretcode);
+ } else {
+ uint16_t val16;
+ addr = frame_addr + offsetof(struct rt_sigframe, retcode);
+ __put_user(addr, &frame->pretcode);
+ /* This is movl $,%eax ; int $0x80 */
+ __put_user(0xb8, (char *)(frame->retcode+0));
+ __put_user(TARGET_NR_rt_sigreturn, (int *)(frame->retcode+1));
+ val16 = 0x80cd;
+ __put_user(val16, (uint16_t *)(frame->retcode+5));
+ }
+#else
+ /* XXX: Would be slightly better to return -EFAULT here if test fails
+ assert(ka->sa_flags & TARGET_SA_RESTORER); */
+ __put_user(ka->sa_restorer, &frame->pretcode);
+#endif
+
+ /* Set up registers for signal handler */
+ env->regs[R_ESP] = frame_addr;
+ env->eip = ka->_sa_handler;
+
+#ifndef TARGET_X86_64
+ env->regs[R_EAX] = sig;
+ env->regs[R_EDX] = (unsigned long)&frame->info;
+ env->regs[R_ECX] = (unsigned long)&frame->uc;
+#else
+ env->regs[R_EAX] = 0;
+ env->regs[R_EDI] = sig;
+ env->regs[R_ESI] = (unsigned long)&frame->info;
+ env->regs[R_EDX] = (unsigned long)&frame->uc;
+#endif
+
+ cpu_x86_load_seg(env, R_DS, __USER_DS);
+ cpu_x86_load_seg(env, R_ES, __USER_DS);
+ cpu_x86_load_seg(env, R_CS, __USER_CS);
+ cpu_x86_load_seg(env, R_SS, __USER_DS);
+ env->eflags &= ~TF_MASK;
+
+ unlock_user_struct(frame, frame_addr, 1);
+
+ return;
+
+give_sigsegv:
+ force_sigsegv(sig);
+}
+
+static int
+restore_sigcontext(CPUX86State *env, struct target_sigcontext *sc)
+{
+ unsigned int err = 0;
+ abi_ulong fpstate_addr;
+ unsigned int tmpflags;
+
+#ifndef TARGET_X86_64
+ cpu_x86_load_seg(env, R_GS, tswap16(sc->gs));
+ cpu_x86_load_seg(env, R_FS, tswap16(sc->fs));
+ cpu_x86_load_seg(env, R_ES, tswap16(sc->es));
+ cpu_x86_load_seg(env, R_DS, tswap16(sc->ds));
+
+ env->regs[R_EDI] = tswapl(sc->edi);
+ env->regs[R_ESI] = tswapl(sc->esi);
+ env->regs[R_EBP] = tswapl(sc->ebp);
+ env->regs[R_ESP] = tswapl(sc->esp);
+ env->regs[R_EBX] = tswapl(sc->ebx);
+ env->regs[R_EDX] = tswapl(sc->edx);
+ env->regs[R_ECX] = tswapl(sc->ecx);
+ env->regs[R_EAX] = tswapl(sc->eax);
+
+ env->eip = tswapl(sc->eip);
+#else
+ env->regs[8] = tswapl(sc->r8);
+ env->regs[9] = tswapl(sc->r9);
+ env->regs[10] = tswapl(sc->r10);
+ env->regs[11] = tswapl(sc->r11);
+ env->regs[12] = tswapl(sc->r12);
+ env->regs[13] = tswapl(sc->r13);
+ env->regs[14] = tswapl(sc->r14);
+ env->regs[15] = tswapl(sc->r15);
+
+ env->regs[R_EDI] = tswapl(sc->rdi);
+ env->regs[R_ESI] = tswapl(sc->rsi);
+ env->regs[R_EBP] = tswapl(sc->rbp);
+ env->regs[R_EBX] = tswapl(sc->rbx);
+ env->regs[R_EDX] = tswapl(sc->rdx);
+ env->regs[R_EAX] = tswapl(sc->rax);
+ env->regs[R_ECX] = tswapl(sc->rcx);
+ env->regs[R_ESP] = tswapl(sc->rsp);
+
+ env->eip = tswapl(sc->rip);
+#endif
+
+ cpu_x86_load_seg(env, R_CS, lduw_p(&sc->cs) | 3);
+ cpu_x86_load_seg(env, R_SS, lduw_p(&sc->ss) | 3);
+
+ tmpflags = tswapl(sc->eflags);
+ env->eflags = (env->eflags & ~0x40DD5) | (tmpflags & 0x40DD5);
+ // regs->orig_eax = -1; /* disable syscall checks */
+
+ fpstate_addr = tswapl(sc->fpstate);
+ if (fpstate_addr != 0) {
+ if (!access_ok(VERIFY_READ, fpstate_addr,
+ sizeof(struct target_fpstate)))
+ goto badframe;
+#ifndef TARGET_X86_64
+ cpu_x86_frstor(env, fpstate_addr, 1);
+#else
+ cpu_x86_fxrstor(env, fpstate_addr);
+#endif
+ }
+
+ return err;
+badframe:
+ return 1;
+}
+
+/* Note: there is no sigreturn on x86_64, there is only rt_sigreturn */
+#ifndef TARGET_X86_64
+long do_sigreturn(CPUX86State *env)
+{
+ struct sigframe *frame;
+ abi_ulong frame_addr = env->regs[R_ESP] - 8;
+ target_sigset_t target_set;
+ sigset_t set;
+ int i;
+
+ trace_user_do_sigreturn(env, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
+ goto badframe;
+ /* set blocked signals */
+ __get_user(target_set.sig[0], &frame->sc.oldmask);
+ for(i = 1; i < TARGET_NSIG_WORDS; i++) {
+ __get_user(target_set.sig[i], &frame->extramask[i - 1]);
+ }
+
+ target_to_host_sigset_internal(&set, &target_set);
+ set_sigmask(&set);
+
+ /* restore registers */
+ if (restore_sigcontext(env, &frame->sc))
+ goto badframe;
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+badframe:
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+#endif
+
+long do_rt_sigreturn(CPUX86State *env)
+{
+ abi_ulong frame_addr;
+ struct rt_sigframe *frame;
+ sigset_t set;
+
+ frame_addr = env->regs[R_ESP] - sizeof(abi_ulong);
+ trace_user_do_rt_sigreturn(env, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
+ goto badframe;
+ target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
+ set_sigmask(&set);
+
+ if (restore_sigcontext(env, &frame->uc.tuc_mcontext)) {
+ goto badframe;
+ }
+
+ if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe,
uc.tuc_stack), 0,
+ get_sp_from_cpustate(env)) == -EFAULT) {
+ goto badframe;
+ }
+
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+badframe:
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
diff --git a/linux-user/m68k/signal.inc.c b/linux-user/m68k/signal.inc.c
new file mode 100644
index 0000000000..07db1cdeda
--- /dev/null
+++ b/linux-user/m68k/signal.inc.c
@@ -0,0 +1,406 @@
+
+struct target_sigcontext {
+ abi_ulong sc_mask;
+ abi_ulong sc_usp;
+ abi_ulong sc_d0;
+ abi_ulong sc_d1;
+ abi_ulong sc_a0;
+ abi_ulong sc_a1;
+ unsigned short sc_sr;
+ abi_ulong sc_pc;
+};
+
+struct target_sigframe
+{
+ abi_ulong pretcode;
+ int sig;
+ int code;
+ abi_ulong psc;
+ char retcode[8];
+ abi_ulong extramask[TARGET_NSIG_WORDS-1];
+ struct target_sigcontext sc;
+};
+
+typedef int target_greg_t;
+#define TARGET_NGREG 18
+typedef target_greg_t target_gregset_t[TARGET_NGREG];
+
+typedef struct target_fpregset {
+ int f_fpcntl[3];
+ int f_fpregs[8*3];
+} target_fpregset_t;
+
+struct target_mcontext {
+ int version;
+ target_gregset_t gregs;
+ target_fpregset_t fpregs;
+};
+
+#define TARGET_MCONTEXT_VERSION 2
+
+struct target_ucontext {
+ abi_ulong tuc_flags;
+ abi_ulong tuc_link;
+ target_stack_t tuc_stack;
+ struct target_mcontext tuc_mcontext;
+ abi_long tuc_filler[80];
+ target_sigset_t tuc_sigmask;
+};
+
+struct target_rt_sigframe
+{
+ abi_ulong pretcode;
+ int sig;
+ abi_ulong pinfo;
+ abi_ulong puc;
+ char retcode[8];
+ struct target_siginfo info;
+ struct target_ucontext uc;
+};
+
+static void setup_sigcontext(struct target_sigcontext *sc, CPUM68KState *env,
+ abi_ulong mask)
+{
+ uint32_t sr = (env->sr & 0xff00) | cpu_m68k_get_ccr(env);
+ __put_user(mask, &sc->sc_mask);
+ __put_user(env->aregs[7], &sc->sc_usp);
+ __put_user(env->dregs[0], &sc->sc_d0);
+ __put_user(env->dregs[1], &sc->sc_d1);
+ __put_user(env->aregs[0], &sc->sc_a0);
+ __put_user(env->aregs[1], &sc->sc_a1);
+ __put_user(sr, &sc->sc_sr);
+ __put_user(env->pc, &sc->sc_pc);
+}
+
+static void
+restore_sigcontext(CPUM68KState *env, struct target_sigcontext *sc)
+{
+ int temp;
+
+ __get_user(env->aregs[7], &sc->sc_usp);
+ __get_user(env->dregs[0], &sc->sc_d0);
+ __get_user(env->dregs[1], &sc->sc_d1);
+ __get_user(env->aregs[0], &sc->sc_a0);
+ __get_user(env->aregs[1], &sc->sc_a1);
+ __get_user(env->pc, &sc->sc_pc);
+ __get_user(temp, &sc->sc_sr);
+ cpu_m68k_set_ccr(env, temp);
+}
+
+/*
+ * Determine which stack to use..
+ */
+static inline abi_ulong
+get_sigframe(struct target_sigaction *ka, CPUM68KState *regs,
+ size_t frame_size)
+{
+ unsigned long sp;
+
+ sp = regs->aregs[7];
+
+ /* This is the X/Open sanctioned signal stack switching. */
+ if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) {
+ sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
+ }
+
+ return ((sp - frame_size) & -8UL);
+}
+
+static void setup_frame(int sig, struct target_sigaction *ka,
+ target_sigset_t *set, CPUM68KState *env)
+{
+ struct target_sigframe *frame;
+ abi_ulong frame_addr;
+ abi_ulong retcode_addr;
+ abi_ulong sc_addr;
+ int i;
+
+ frame_addr = get_sigframe(ka, env, sizeof *frame);
+ trace_user_setup_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
+
+ __put_user(sig, &frame->sig);
+
+ sc_addr = frame_addr + offsetof(struct target_sigframe, sc);
+ __put_user(sc_addr, &frame->psc);
+
+ setup_sigcontext(&frame->sc, env, set->sig[0]);
+
+ for(i = 1; i < TARGET_NSIG_WORDS; i++) {
+ __put_user(set->sig[i], &frame->extramask[i - 1]);
+ }
+
+ /* Set up to return from userspace. */
+
+ retcode_addr = frame_addr + offsetof(struct target_sigframe, retcode);
+ __put_user(retcode_addr, &frame->pretcode);
+
+ /* moveq #,d0; trap #0 */
+
+ __put_user(0x70004e40 + (TARGET_NR_sigreturn << 16),
+ (uint32_t *)(frame->retcode));
+
+ /* Set up to return from userspace */
+
+ env->aregs[7] = frame_addr;
+ env->pc = ka->_sa_handler;
+
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+
+give_sigsegv:
+ force_sigsegv(sig);
+}
+
+static inline void target_rt_save_fpu_state(struct target_ucontext *uc,
+ CPUM68KState *env)
+{
+ int i;
+ target_fpregset_t *fpregs = &uc->tuc_mcontext.fpregs;
+
+ __put_user(env->fpcr, &fpregs->f_fpcntl[0]);
+ __put_user(env->fpsr, &fpregs->f_fpcntl[1]);
+ /* fpiar is not emulated */
+
+ for (i = 0; i < 8; i++) {
+ uint32_t high = env->fregs[i].d.high << 16;
+ __put_user(high, &fpregs->f_fpregs[i * 3]);
+ __put_user(env->fregs[i].d.low,
+ (uint64_t *)&fpregs->f_fpregs[i * 3 + 1]);
+ }
+}
+
+static inline int target_rt_setup_ucontext(struct target_ucontext *uc,
+ CPUM68KState *env)
+{
+ target_greg_t *gregs = uc->tuc_mcontext.gregs;
+ uint32_t sr = (env->sr & 0xff00) | cpu_m68k_get_ccr(env);
+
+ __put_user(TARGET_MCONTEXT_VERSION, &uc->tuc_mcontext.version);
+ __put_user(env->dregs[0], &gregs[0]);
+ __put_user(env->dregs[1], &gregs[1]);
+ __put_user(env->dregs[2], &gregs[2]);
+ __put_user(env->dregs[3], &gregs[3]);
+ __put_user(env->dregs[4], &gregs[4]);
+ __put_user(env->dregs[5], &gregs[5]);
+ __put_user(env->dregs[6], &gregs[6]);
+ __put_user(env->dregs[7], &gregs[7]);
+ __put_user(env->aregs[0], &gregs[8]);
+ __put_user(env->aregs[1], &gregs[9]);
+ __put_user(env->aregs[2], &gregs[10]);
+ __put_user(env->aregs[3], &gregs[11]);
+ __put_user(env->aregs[4], &gregs[12]);
+ __put_user(env->aregs[5], &gregs[13]);
+ __put_user(env->aregs[6], &gregs[14]);
+ __put_user(env->aregs[7], &gregs[15]);
+ __put_user(env->pc, &gregs[16]);
+ __put_user(sr, &gregs[17]);
+
+ target_rt_save_fpu_state(uc, env);
+
+ return 0;
+}
+
+static inline void target_rt_restore_fpu_state(CPUM68KState *env,
+ struct target_ucontext *uc)
+{
+ int i;
+ target_fpregset_t *fpregs = &uc->tuc_mcontext.fpregs;
+ uint32_t fpcr;
+
+ __get_user(fpcr, &fpregs->f_fpcntl[0]);
+ cpu_m68k_set_fpcr(env, fpcr);
+ __get_user(env->fpsr, &fpregs->f_fpcntl[1]);
+ /* fpiar is not emulated */
+
+ for (i = 0; i < 8; i++) {
+ uint32_t high;
+ __get_user(high, &fpregs->f_fpregs[i * 3]);
+ env->fregs[i].d.high = high >> 16;
+ __get_user(env->fregs[i].d.low,
+ (uint64_t *)&fpregs->f_fpregs[i * 3 + 1]);
+ }
+}
+
+static inline int target_rt_restore_ucontext(CPUM68KState *env,
+ struct target_ucontext *uc)
+{
+ int temp;
+ target_greg_t *gregs = uc->tuc_mcontext.gregs;
+
+ __get_user(temp, &uc->tuc_mcontext.version);
+ if (temp != TARGET_MCONTEXT_VERSION)
+ goto badframe;
+
+ /* restore passed registers */
+ __get_user(env->dregs[0], &gregs[0]);
+ __get_user(env->dregs[1], &gregs[1]);
+ __get_user(env->dregs[2], &gregs[2]);
+ __get_user(env->dregs[3], &gregs[3]);
+ __get_user(env->dregs[4], &gregs[4]);
+ __get_user(env->dregs[5], &gregs[5]);
+ __get_user(env->dregs[6], &gregs[6]);
+ __get_user(env->dregs[7], &gregs[7]);
+ __get_user(env->aregs[0], &gregs[8]);
+ __get_user(env->aregs[1], &gregs[9]);
+ __get_user(env->aregs[2], &gregs[10]);
+ __get_user(env->aregs[3], &gregs[11]);
+ __get_user(env->aregs[4], &gregs[12]);
+ __get_user(env->aregs[5], &gregs[13]);
+ __get_user(env->aregs[6], &gregs[14]);
+ __get_user(env->aregs[7], &gregs[15]);
+ __get_user(env->pc, &gregs[16]);
+ __get_user(temp, &gregs[17]);
+ cpu_m68k_set_ccr(env, temp);
+
+ target_rt_restore_fpu_state(env, uc);
+
+ return 0;
+
+badframe:
+ return 1;
+}
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPUM68KState *env)
+{
+ struct target_rt_sigframe *frame;
+ abi_ulong frame_addr;
+ abi_ulong retcode_addr;
+ abi_ulong info_addr;
+ abi_ulong uc_addr;
+ int err = 0;
+ int i;
+
+ frame_addr = get_sigframe(ka, env, sizeof *frame);
+ trace_user_setup_rt_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
+
+ __put_user(sig, &frame->sig);
+
+ info_addr = frame_addr + offsetof(struct target_rt_sigframe, info);
+ __put_user(info_addr, &frame->pinfo);
+
+ uc_addr = frame_addr + offsetof(struct target_rt_sigframe, uc);
+ __put_user(uc_addr, &frame->puc);
+
+ tswap_siginfo(&frame->info, info);
+
+ /* Create the ucontext */
+
+ __put_user(0, &frame->uc.tuc_flags);
+ __put_user(0, &frame->uc.tuc_link);
+ __put_user(target_sigaltstack_used.ss_sp,
+ &frame->uc.tuc_stack.ss_sp);
+ __put_user(sas_ss_flags(env->aregs[7]),
+ &frame->uc.tuc_stack.ss_flags);
+ __put_user(target_sigaltstack_used.ss_size,
+ &frame->uc.tuc_stack.ss_size);
+ err |= target_rt_setup_ucontext(&frame->uc, env);
+
+ if (err)
+ goto give_sigsegv;
+
+ for(i = 0; i < TARGET_NSIG_WORDS; i++) {
+ __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
+ }
+
+ /* Set up to return from userspace. */
+
+ retcode_addr = frame_addr + offsetof(struct target_sigframe, retcode);
+ __put_user(retcode_addr, &frame->pretcode);
+
+ /* moveq #,d0; notb d0; trap #0 */
+
+ __put_user(0x70004600 + ((TARGET_NR_rt_sigreturn ^ 0xff) << 16),
+ (uint32_t *)(frame->retcode + 0));
+ __put_user(0x4e40, (uint16_t *)(frame->retcode + 4));
+
+ if (err)
+ goto give_sigsegv;
+
+ /* Set up to return from userspace */
+
+ env->aregs[7] = frame_addr;
+ env->pc = ka->_sa_handler;
+
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+
+give_sigsegv:
+ unlock_user_struct(frame, frame_addr, 1);
+ force_sigsegv(sig);
+}
+
+long do_sigreturn(CPUM68KState *env)
+{
+ struct target_sigframe *frame;
+ abi_ulong frame_addr = env->aregs[7] - 4;
+ target_sigset_t target_set;
+ sigset_t set;
+ int i;
+
+ trace_user_do_sigreturn(env, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
+ goto badframe;
+
+ /* set blocked signals */
+
+ __get_user(target_set.sig[0], &frame->sc.sc_mask);
+
+ for(i = 1; i < TARGET_NSIG_WORDS; i++) {
+ __get_user(target_set.sig[i], &frame->extramask[i - 1]);
+ }
+
+ target_to_host_sigset_internal(&set, &target_set);
+ set_sigmask(&set);
+
+ /* restore registers */
+
+ restore_sigcontext(env, &frame->sc);
+
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+badframe:
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
+long do_rt_sigreturn(CPUM68KState *env)
+{
+ struct target_rt_sigframe *frame;
+ abi_ulong frame_addr = env->aregs[7] - 4;
+ sigset_t set;
+
+ trace_user_do_rt_sigreturn(env, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
+ goto badframe;
+
+ target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
+ set_sigmask(&set);
+
+ /* restore registers */
+
+ if (target_rt_restore_ucontext(env, &frame->uc))
+ goto badframe;
+
+ if (do_sigaltstack(frame_addr +
+ offsetof(struct target_rt_sigframe, uc.tuc_stack),
+ 0, get_sp_from_cpustate(env)) == -EFAULT)
+ goto badframe;
+
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+badframe:
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
diff --git a/linux-user/microblaze/signal.inc.c
b/linux-user/microblaze/signal.inc.c
new file mode 100644
index 0000000000..728bd33273
--- /dev/null
+++ b/linux-user/microblaze/signal.inc.c
@@ -0,0 +1,226 @@
+
+struct target_sigcontext {
+ struct target_pt_regs regs; /* needs to be first */
+ uint32_t oldmask;
+};
+
+struct target_stack_t {
+ abi_ulong ss_sp;
+ int ss_flags;
+ unsigned int ss_size;
+};
+
+struct target_ucontext {
+ abi_ulong tuc_flags;
+ abi_ulong tuc_link;
+ struct target_stack_t tuc_stack;
+ struct target_sigcontext tuc_mcontext;
+ uint32_t tuc_extramask[TARGET_NSIG_WORDS - 1];
+};
+
+/* Signal frames. */
+struct target_signal_frame {
+ struct target_ucontext uc;
+ uint32_t extramask[TARGET_NSIG_WORDS - 1];
+ uint32_t tramp[2];
+};
+
+struct rt_signal_frame {
+ siginfo_t info;
+ ucontext_t uc;
+ uint32_t tramp[2];
+};
+
+static void setup_sigcontext(struct target_sigcontext *sc, CPUMBState *env)
+{
+ __put_user(env->regs[0], &sc->regs.r0);
+ __put_user(env->regs[1], &sc->regs.r1);
+ __put_user(env->regs[2], &sc->regs.r2);
+ __put_user(env->regs[3], &sc->regs.r3);
+ __put_user(env->regs[4], &sc->regs.r4);
+ __put_user(env->regs[5], &sc->regs.r5);
+ __put_user(env->regs[6], &sc->regs.r6);
+ __put_user(env->regs[7], &sc->regs.r7);
+ __put_user(env->regs[8], &sc->regs.r8);
+ __put_user(env->regs[9], &sc->regs.r9);
+ __put_user(env->regs[10], &sc->regs.r10);
+ __put_user(env->regs[11], &sc->regs.r11);
+ __put_user(env->regs[12], &sc->regs.r12);
+ __put_user(env->regs[13], &sc->regs.r13);
+ __put_user(env->regs[14], &sc->regs.r14);
+ __put_user(env->regs[15], &sc->regs.r15);
+ __put_user(env->regs[16], &sc->regs.r16);
+ __put_user(env->regs[17], &sc->regs.r17);
+ __put_user(env->regs[18], &sc->regs.r18);
+ __put_user(env->regs[19], &sc->regs.r19);
+ __put_user(env->regs[20], &sc->regs.r20);
+ __put_user(env->regs[21], &sc->regs.r21);
+ __put_user(env->regs[22], &sc->regs.r22);
+ __put_user(env->regs[23], &sc->regs.r23);
+ __put_user(env->regs[24], &sc->regs.r24);
+ __put_user(env->regs[25], &sc->regs.r25);
+ __put_user(env->regs[26], &sc->regs.r26);
+ __put_user(env->regs[27], &sc->regs.r27);
+ __put_user(env->regs[28], &sc->regs.r28);
+ __put_user(env->regs[29], &sc->regs.r29);
+ __put_user(env->regs[30], &sc->regs.r30);
+ __put_user(env->regs[31], &sc->regs.r31);
+ __put_user(env->sregs[SR_PC], &sc->regs.pc);
+}
+
+static void restore_sigcontext(struct target_sigcontext *sc, CPUMBState *env)
+{
+ __get_user(env->regs[0], &sc->regs.r0);
+ __get_user(env->regs[1], &sc->regs.r1);
+ __get_user(env->regs[2], &sc->regs.r2);
+ __get_user(env->regs[3], &sc->regs.r3);
+ __get_user(env->regs[4], &sc->regs.r4);
+ __get_user(env->regs[5], &sc->regs.r5);
+ __get_user(env->regs[6], &sc->regs.r6);
+ __get_user(env->regs[7], &sc->regs.r7);
+ __get_user(env->regs[8], &sc->regs.r8);
+ __get_user(env->regs[9], &sc->regs.r9);
+ __get_user(env->regs[10], &sc->regs.r10);
+ __get_user(env->regs[11], &sc->regs.r11);
+ __get_user(env->regs[12], &sc->regs.r12);
+ __get_user(env->regs[13], &sc->regs.r13);
+ __get_user(env->regs[14], &sc->regs.r14);
+ __get_user(env->regs[15], &sc->regs.r15);
+ __get_user(env->regs[16], &sc->regs.r16);
+ __get_user(env->regs[17], &sc->regs.r17);
+ __get_user(env->regs[18], &sc->regs.r18);
+ __get_user(env->regs[19], &sc->regs.r19);
+ __get_user(env->regs[20], &sc->regs.r20);
+ __get_user(env->regs[21], &sc->regs.r21);
+ __get_user(env->regs[22], &sc->regs.r22);
+ __get_user(env->regs[23], &sc->regs.r23);
+ __get_user(env->regs[24], &sc->regs.r24);
+ __get_user(env->regs[25], &sc->regs.r25);
+ __get_user(env->regs[26], &sc->regs.r26);
+ __get_user(env->regs[27], &sc->regs.r27);
+ __get_user(env->regs[28], &sc->regs.r28);
+ __get_user(env->regs[29], &sc->regs.r29);
+ __get_user(env->regs[30], &sc->regs.r30);
+ __get_user(env->regs[31], &sc->regs.r31);
+ __get_user(env->sregs[SR_PC], &sc->regs.pc);
+}
+
+static abi_ulong get_sigframe(struct target_sigaction *ka,
+ CPUMBState *env, int frame_size)
+{
+ abi_ulong sp = env->regs[1];
+
+ if ((ka->sa_flags & TARGET_SA_ONSTACK) != 0 && !on_sig_stack(sp)) {
+ sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
+ }
+
+ return ((sp - frame_size) & -8UL);
+}
+
+static void setup_frame(int sig, struct target_sigaction *ka,
+ target_sigset_t *set, CPUMBState *env)
+{
+ struct target_signal_frame *frame;
+ abi_ulong frame_addr;
+ int i;
+
+ frame_addr = get_sigframe(ka, env, sizeof *frame);
+ trace_user_setup_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
+ goto badframe;
+
+ /* Save the mask. */
+ __put_user(set->sig[0], &frame->uc.tuc_mcontext.oldmask);
+
+ for(i = 1; i < TARGET_NSIG_WORDS; i++) {
+ __put_user(set->sig[i], &frame->extramask[i - 1]);
+ }
+
+ setup_sigcontext(&frame->uc.tuc_mcontext, env);
+
+ /* Set up to return from userspace. If provided, use a stub
+ already in userspace. */
+ /* minus 8 is offset to cater for "rtsd r15,8" offset */
+ if (ka->sa_flags & TARGET_SA_RESTORER) {
+ env->regs[15] = ((unsigned long)ka->sa_restorer)-8;
+ } else {
+ uint32_t t;
+ /* Note, these encodings are _big endian_! */
+ /* addi r12, r0, __NR_sigreturn */
+ t = 0x31800000UL | TARGET_NR_sigreturn;
+ __put_user(t, frame->tramp + 0);
+ /* brki r14, 0x8 */
+ t = 0xb9cc0008UL;
+ __put_user(t, frame->tramp + 1);
+
+ /* Return from sighandler will jump to the tramp.
+ Negative 8 offset because return is rtsd r15, 8 */
+ env->regs[15] = frame_addr + offsetof(struct target_signal_frame,
tramp)
+ - 8;
+ }
+
+ /* Set up registers for signal handler */
+ env->regs[1] = frame_addr;
+ /* Signal handler args: */
+ env->regs[5] = sig; /* Arg 0: signum */
+ env->regs[6] = 0;
+ /* arg 1: sigcontext */
+ env->regs[7] = frame_addr += offsetof(typeof(*frame), uc);
+
+ /* Offset of 4 to handle microblaze rtid r14, 0 */
+ env->sregs[SR_PC] = (unsigned long)ka->_sa_handler;
+
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+badframe:
+ force_sigsegv(sig);
+}
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPUMBState *env)
+{
+ fprintf(stderr, "Microblaze setup_rt_frame: not implemented\n");
+}
+
+long do_sigreturn(CPUMBState *env)
+{
+ struct target_signal_frame *frame;
+ abi_ulong frame_addr;
+ target_sigset_t target_set;
+ sigset_t set;
+ int i;
+
+ frame_addr = env->regs[R_SP];
+ trace_user_do_sigreturn(env, frame_addr);
+ /* Make sure the guest isn't playing games. */
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
+ goto badframe;
+
+ /* Restore blocked signals */
+ __get_user(target_set.sig[0], &frame->uc.tuc_mcontext.oldmask);
+ for(i = 1; i < TARGET_NSIG_WORDS; i++) {
+ __get_user(target_set.sig[i], &frame->extramask[i - 1]);
+ }
+ target_to_host_sigset_internal(&set, &target_set);
+ set_sigmask(&set);
+
+ restore_sigcontext(&frame->uc.tuc_mcontext, env);
+ /* We got here through a sigreturn syscall, our path back is via an
+ rtb insn so setup r14 for that. */
+ env->regs[14] = env->sregs[SR_PC];
+
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+badframe:
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
+long do_rt_sigreturn(CPUMBState *env)
+{
+ trace_user_do_rt_sigreturn(env, 0);
+ fprintf(stderr, "Microblaze do_rt_sigreturn: not implemented\n");
+ return -TARGET_ENOSYS;
+}
+
diff --git a/linux-user/mips/signal.inc.c b/linux-user/mips/signal.inc.c
new file mode 100644
index 0000000000..19e5b3aad4
--- /dev/null
+++ b/linux-user/mips/signal.inc.c
@@ -0,0 +1,378 @@
+
+# if defined(TARGET_ABI_MIPSO32)
+struct target_sigcontext {
+ uint32_t sc_regmask; /* Unused */
+ uint32_t sc_status;
+ uint64_t sc_pc;
+ uint64_t sc_regs[32];
+ uint64_t sc_fpregs[32];
+ uint32_t sc_ownedfp; /* Unused */
+ uint32_t sc_fpc_csr;
+ uint32_t sc_fpc_eir; /* Unused */
+ uint32_t sc_used_math;
+ uint32_t sc_dsp; /* dsp status, was sc_ssflags */
+ uint32_t pad0;
+ uint64_t sc_mdhi;
+ uint64_t sc_mdlo;
+ target_ulong sc_hi1; /* Was sc_cause */
+ target_ulong sc_lo1; /* Was sc_badvaddr */
+ target_ulong sc_hi2; /* Was sc_sigset[4] */
+ target_ulong sc_lo2;
+ target_ulong sc_hi3;
+ target_ulong sc_lo3;
+};
+# else /* N32 || N64 */
+struct target_sigcontext {
+ uint64_t sc_regs[32];
+ uint64_t sc_fpregs[32];
+ uint64_t sc_mdhi;
+ uint64_t sc_hi1;
+ uint64_t sc_hi2;
+ uint64_t sc_hi3;
+ uint64_t sc_mdlo;
+ uint64_t sc_lo1;
+ uint64_t sc_lo2;
+ uint64_t sc_lo3;
+ uint64_t sc_pc;
+ uint32_t sc_fpc_csr;
+ uint32_t sc_used_math;
+ uint32_t sc_dsp;
+ uint32_t sc_reserved;
+};
+# endif /* O32 */
+
+struct sigframe {
+ uint32_t sf_ass[4]; /* argument save space for o32 */
+ uint32_t sf_code[2]; /* signal trampoline */
+ struct target_sigcontext sf_sc;
+ target_sigset_t sf_mask;
+};
+
+struct target_ucontext {
+ target_ulong tuc_flags;
+ target_ulong tuc_link;
+ target_stack_t tuc_stack;
+ target_ulong pad0;
+ struct target_sigcontext tuc_mcontext;
+ target_sigset_t tuc_sigmask;
+};
+
+struct target_rt_sigframe {
+ uint32_t rs_ass[4]; /* argument save space for o32 */
+ uint32_t rs_code[2]; /* signal trampoline */
+ struct target_siginfo rs_info;
+ struct target_ucontext rs_uc;
+};
+
+/* Install trampoline to jump back from signal handler */
+static inline int install_sigtramp(unsigned int *tramp, unsigned int syscall)
+{
+ int err = 0;
+
+ /*
+ * Set up the return code ...
+ *
+ * li v0, __NR__foo_sigreturn
+ * syscall
+ */
+
+ __put_user(0x24020000 + syscall, tramp + 0);
+ __put_user(0x0000000c , tramp + 1);
+ return err;
+}
+
+static inline void setup_sigcontext(CPUMIPSState *regs,
+ struct target_sigcontext *sc)
+{
+ int i;
+
+ __put_user(exception_resume_pc(regs), &sc->sc_pc);
+ regs->hflags &= ~MIPS_HFLAG_BMASK;
+
+ __put_user(0, &sc->sc_regs[0]);
+ for (i = 1; i < 32; ++i) {
+ __put_user(regs->active_tc.gpr[i], &sc->sc_regs[i]);
+ }
+
+ __put_user(regs->active_tc.HI[0], &sc->sc_mdhi);
+ __put_user(regs->active_tc.LO[0], &sc->sc_mdlo);
+
+ /* Rather than checking for dsp existence, always copy. The storage
+ would just be garbage otherwise. */
+ __put_user(regs->active_tc.HI[1], &sc->sc_hi1);
+ __put_user(regs->active_tc.HI[2], &sc->sc_hi2);
+ __put_user(regs->active_tc.HI[3], &sc->sc_hi3);
+ __put_user(regs->active_tc.LO[1], &sc->sc_lo1);
+ __put_user(regs->active_tc.LO[2], &sc->sc_lo2);
+ __put_user(regs->active_tc.LO[3], &sc->sc_lo3);
+ {
+ uint32_t dsp = cpu_rddsp(0x3ff, regs);
+ __put_user(dsp, &sc->sc_dsp);
+ }
+
+ __put_user(1, &sc->sc_used_math);
+
+ for (i = 0; i < 32; ++i) {
+ __put_user(regs->active_fpu.fpr[i].d, &sc->sc_fpregs[i]);
+ }
+}
+
+static inline void
+restore_sigcontext(CPUMIPSState *regs, struct target_sigcontext *sc)
+{
+ int i;
+
+ __get_user(regs->CP0_EPC, &sc->sc_pc);
+
+ __get_user(regs->active_tc.HI[0], &sc->sc_mdhi);
+ __get_user(regs->active_tc.LO[0], &sc->sc_mdlo);
+
+ for (i = 1; i < 32; ++i) {
+ __get_user(regs->active_tc.gpr[i], &sc->sc_regs[i]);
+ }
+
+ __get_user(regs->active_tc.HI[1], &sc->sc_hi1);
+ __get_user(regs->active_tc.HI[2], &sc->sc_hi2);
+ __get_user(regs->active_tc.HI[3], &sc->sc_hi3);
+ __get_user(regs->active_tc.LO[1], &sc->sc_lo1);
+ __get_user(regs->active_tc.LO[2], &sc->sc_lo2);
+ __get_user(regs->active_tc.LO[3], &sc->sc_lo3);
+ {
+ uint32_t dsp;
+ __get_user(dsp, &sc->sc_dsp);
+ cpu_wrdsp(dsp, 0x3ff, regs);
+ }
+
+ for (i = 0; i < 32; ++i) {
+ __get_user(regs->active_fpu.fpr[i].d, &sc->sc_fpregs[i]);
+ }
+}
+
+/*
+ * Determine which stack to use..
+ */
+static inline abi_ulong
+get_sigframe(struct target_sigaction *ka, CPUMIPSState *regs, size_t
frame_size)
+{
+ unsigned long sp;
+
+ /* Default to using normal stack */
+ sp = regs->active_tc.gpr[29];
+
+ /*
+ * FPU emulator may have its own trampoline active just
+ * above the user stack, 16-bytes before the next lowest
+ * 16 byte boundary. Try to avoid trashing it.
+ */
+ sp -= 32;
+
+ /* This is the X/Open sanctioned signal stack switching. */
+ if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) {
+ sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
+ }
+
+ return (sp - frame_size) & ~7;
+}
+
+static void mips_set_hflags_isa_mode_from_pc(CPUMIPSState *env)
+{
+ if (env->insn_flags & (ASE_MIPS16 | ASE_MICROMIPS)) {
+ env->hflags &= ~MIPS_HFLAG_M16;
+ env->hflags |= (env->active_tc.PC & 1) << MIPS_HFLAG_M16_SHIFT;
+ env->active_tc.PC &= ~(target_ulong) 1;
+ }
+}
+
+# if defined(TARGET_ABI_MIPSO32)
+/* compare linux/arch/mips/kernel/signal.c:setup_frame() */
+static void setup_frame(int sig, struct target_sigaction * ka,
+ target_sigset_t *set, CPUMIPSState *regs)
+{
+ struct sigframe *frame;
+ abi_ulong frame_addr;
+ int i;
+
+ frame_addr = get_sigframe(ka, regs, sizeof(*frame));
+ trace_user_setup_frame(regs, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
+
+ install_sigtramp(frame->sf_code, TARGET_NR_sigreturn);
+
+ setup_sigcontext(regs, &frame->sf_sc);
+
+ for(i = 0; i < TARGET_NSIG_WORDS; i++) {
+ __put_user(set->sig[i], &frame->sf_mask.sig[i]);
+ }
+
+ /*
+ * Arguments to signal handler:
+ *
+ * a0 = signal number
+ * a1 = 0 (should be cause)
+ * a2 = pointer to struct sigcontext
+ *
+ * $25 and PC point to the signal handler, $29 points to the
+ * struct sigframe.
+ */
+ regs->active_tc.gpr[ 4] = sig;
+ regs->active_tc.gpr[ 5] = 0;
+ regs->active_tc.gpr[ 6] = frame_addr + offsetof(struct sigframe, sf_sc);
+ regs->active_tc.gpr[29] = frame_addr;
+ regs->active_tc.gpr[31] = frame_addr + offsetof(struct sigframe, sf_code);
+ /* The original kernel code sets CP0_EPC to the handler
+ * since it returns to userland using eret
+ * we cannot do this here, and we must set PC directly */
+ regs->active_tc.PC = regs->active_tc.gpr[25] = ka->_sa_handler;
+ mips_set_hflags_isa_mode_from_pc(regs);
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+
+give_sigsegv:
+ force_sigsegv(sig);
+}
+
+long do_sigreturn(CPUMIPSState *regs)
+{
+ struct sigframe *frame;
+ abi_ulong frame_addr;
+ sigset_t blocked;
+ target_sigset_t target_set;
+ int i;
+
+ frame_addr = regs->active_tc.gpr[29];
+ trace_user_do_sigreturn(regs, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
+ goto badframe;
+
+ for(i = 0; i < TARGET_NSIG_WORDS; i++) {
+ __get_user(target_set.sig[i], &frame->sf_mask.sig[i]);
+ }
+
+ target_to_host_sigset_internal(&blocked, &target_set);
+ set_sigmask(&blocked);
+
+ restore_sigcontext(regs, &frame->sf_sc);
+
+#if 0
+ /*
+ * Don't let your children do this ...
+ */
+ __asm__ __volatile__(
+ "move\t$29, %0\n\t"
+ "j\tsyscall_exit"
+ :/* no outputs */
+ :"r" (®s));
+ /* Unreached */
+#endif
+
+ regs->active_tc.PC = regs->CP0_EPC;
+ mips_set_hflags_isa_mode_from_pc(regs);
+ /* I am not sure this is right, but it seems to work
+ * maybe a problem with nested signals ? */
+ regs->CP0_EPC = 0;
+ return -TARGET_QEMU_ESIGRETURN;
+
+badframe:
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+# endif /* O32 */
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPUMIPSState *env)
+{
+ struct target_rt_sigframe *frame;
+ abi_ulong frame_addr;
+ int i;
+
+ frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_rt_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
+
+ install_sigtramp(frame->rs_code, TARGET_NR_rt_sigreturn);
+
+ tswap_siginfo(&frame->rs_info, info);
+
+ __put_user(0, &frame->rs_uc.tuc_flags);
+ __put_user(0, &frame->rs_uc.tuc_link);
+ __put_user(target_sigaltstack_used.ss_sp, &frame->rs_uc.tuc_stack.ss_sp);
+ __put_user(target_sigaltstack_used.ss_size,
&frame->rs_uc.tuc_stack.ss_size);
+ __put_user(sas_ss_flags(get_sp_from_cpustate(env)),
+ &frame->rs_uc.tuc_stack.ss_flags);
+
+ setup_sigcontext(env, &frame->rs_uc.tuc_mcontext);
+
+ for(i = 0; i < TARGET_NSIG_WORDS; i++) {
+ __put_user(set->sig[i], &frame->rs_uc.tuc_sigmask.sig[i]);
+ }
+
+ /*
+ * Arguments to signal handler:
+ *
+ * a0 = signal number
+ * a1 = pointer to siginfo_t
+ * a2 = pointer to ucontext_t
+ *
+ * $25 and PC point to the signal handler, $29 points to the
+ * struct sigframe.
+ */
+ env->active_tc.gpr[ 4] = sig;
+ env->active_tc.gpr[ 5] = frame_addr
+ + offsetof(struct target_rt_sigframe, rs_info);
+ env->active_tc.gpr[ 6] = frame_addr
+ + offsetof(struct target_rt_sigframe, rs_uc);
+ env->active_tc.gpr[29] = frame_addr;
+ env->active_tc.gpr[31] = frame_addr
+ + offsetof(struct target_rt_sigframe, rs_code);
+ /* The original kernel code sets CP0_EPC to the handler
+ * since it returns to userland using eret
+ * we cannot do this here, and we must set PC directly */
+ env->active_tc.PC = env->active_tc.gpr[25] = ka->_sa_handler;
+ mips_set_hflags_isa_mode_from_pc(env);
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+
+give_sigsegv:
+ unlock_user_struct(frame, frame_addr, 1);
+ force_sigsegv(sig);
+}
+
+long do_rt_sigreturn(CPUMIPSState *env)
+{
+ struct target_rt_sigframe *frame;
+ abi_ulong frame_addr;
+ sigset_t blocked;
+
+ frame_addr = env->active_tc.gpr[29];
+ trace_user_do_rt_sigreturn(env, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+
+ target_to_host_sigset(&blocked, &frame->rs_uc.tuc_sigmask);
+ set_sigmask(&blocked);
+
+ restore_sigcontext(env, &frame->rs_uc.tuc_mcontext);
+
+ if (do_sigaltstack(frame_addr +
+ offsetof(struct target_rt_sigframe, rs_uc.tuc_stack),
+ 0, get_sp_from_cpustate(env)) == -EFAULT)
+ goto badframe;
+
+ env->active_tc.PC = env->CP0_EPC;
+ mips_set_hflags_isa_mode_from_pc(env);
+ /* I am not sure this is right, but it seems to work
+ * maybe a problem with nested signals ? */
+ env->CP0_EPC = 0;
+ return -TARGET_QEMU_ESIGRETURN;
+
+badframe:
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
diff --git a/linux-user/mips64/signal.inc.c b/linux-user/mips64/signal.inc.c
new file mode 100644
index 0000000000..9ab0afa7a8
--- /dev/null
+++ b/linux-user/mips64/signal.inc.c
@@ -0,0 +1 @@
+#include "../mips/signal.inc.c"
diff --git a/linux-user/nios2/signal.inc.c b/linux-user/nios2/signal.inc.c
new file mode 100644
index 0000000000..b5bbcdc6b0
--- /dev/null
+++ b/linux-user/nios2/signal.inc.c
@@ -0,0 +1,232 @@
+
+#define MCONTEXT_VERSION 2
+
+struct target_sigcontext {
+ int version;
+ unsigned long gregs[32];
+};
+
+struct target_ucontext {
+ abi_ulong tuc_flags;
+ abi_ulong tuc_link;
+ target_stack_t tuc_stack;
+ struct target_sigcontext tuc_mcontext;
+ target_sigset_t tuc_sigmask; /* mask last for extensibility */
+};
+
+struct target_rt_sigframe {
+ struct target_siginfo info;
+ struct target_ucontext uc;
+};
+
+static unsigned long sigsp(unsigned long sp, struct target_sigaction *ka)
+{
+ if (unlikely((ka->sa_flags & SA_ONSTACK)) && !sas_ss_flags(sp)) {
+#ifdef CONFIG_STACK_GROWSUP
+ return target_sigaltstack_used.ss_sp;
+#else
+ return target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
+#endif
+ }
+ return sp;
+}
+
+static int rt_setup_ucontext(struct target_ucontext *uc, CPUNios2State *env)
+{
+ unsigned long *gregs = uc->tuc_mcontext.gregs;
+
+ __put_user(MCONTEXT_VERSION, &uc->tuc_mcontext.version);
+ __put_user(env->regs[1], &gregs[0]);
+ __put_user(env->regs[2], &gregs[1]);
+ __put_user(env->regs[3], &gregs[2]);
+ __put_user(env->regs[4], &gregs[3]);
+ __put_user(env->regs[5], &gregs[4]);
+ __put_user(env->regs[6], &gregs[5]);
+ __put_user(env->regs[7], &gregs[6]);
+ __put_user(env->regs[8], &gregs[7]);
+ __put_user(env->regs[9], &gregs[8]);
+ __put_user(env->regs[10], &gregs[9]);
+ __put_user(env->regs[11], &gregs[10]);
+ __put_user(env->regs[12], &gregs[11]);
+ __put_user(env->regs[13], &gregs[12]);
+ __put_user(env->regs[14], &gregs[13]);
+ __put_user(env->regs[15], &gregs[14]);
+ __put_user(env->regs[16], &gregs[15]);
+ __put_user(env->regs[17], &gregs[16]);
+ __put_user(env->regs[18], &gregs[17]);
+ __put_user(env->regs[19], &gregs[18]);
+ __put_user(env->regs[20], &gregs[19]);
+ __put_user(env->regs[21], &gregs[20]);
+ __put_user(env->regs[22], &gregs[21]);
+ __put_user(env->regs[23], &gregs[22]);
+ __put_user(env->regs[R_RA], &gregs[23]);
+ __put_user(env->regs[R_FP], &gregs[24]);
+ __put_user(env->regs[R_GP], &gregs[25]);
+ __put_user(env->regs[R_EA], &gregs[27]);
+ __put_user(env->regs[R_SP], &gregs[28]);
+
+ return 0;
+}
+
+static int rt_restore_ucontext(CPUNios2State *env, struct target_ucontext *uc,
+ int *pr2)
+{
+ int temp;
+ abi_ulong off, frame_addr = env->regs[R_SP];
+ unsigned long *gregs = uc->tuc_mcontext.gregs;
+ int err;
+
+ /* Always make any pending restarted system calls return -EINTR */
+ /* current->restart_block.fn = do_no_restart_syscall; */
+
+ __get_user(temp, &uc->tuc_mcontext.version);
+ if (temp != MCONTEXT_VERSION) {
+ return 1;
+ }
+
+ /* restore passed registers */
+ __get_user(env->regs[1], &gregs[0]);
+ __get_user(env->regs[2], &gregs[1]);
+ __get_user(env->regs[3], &gregs[2]);
+ __get_user(env->regs[4], &gregs[3]);
+ __get_user(env->regs[5], &gregs[4]);
+ __get_user(env->regs[6], &gregs[5]);
+ __get_user(env->regs[7], &gregs[6]);
+ __get_user(env->regs[8], &gregs[7]);
+ __get_user(env->regs[9], &gregs[8]);
+ __get_user(env->regs[10], &gregs[9]);
+ __get_user(env->regs[11], &gregs[10]);
+ __get_user(env->regs[12], &gregs[11]);
+ __get_user(env->regs[13], &gregs[12]);
+ __get_user(env->regs[14], &gregs[13]);
+ __get_user(env->regs[15], &gregs[14]);
+ __get_user(env->regs[16], &gregs[15]);
+ __get_user(env->regs[17], &gregs[16]);
+ __get_user(env->regs[18], &gregs[17]);
+ __get_user(env->regs[19], &gregs[18]);
+ __get_user(env->regs[20], &gregs[19]);
+ __get_user(env->regs[21], &gregs[20]);
+ __get_user(env->regs[22], &gregs[21]);
+ __get_user(env->regs[23], &gregs[22]);
+ /* gregs[23] is handled below */
+ /* Verify, should this be settable */
+ __get_user(env->regs[R_FP], &gregs[24]);
+ /* Verify, should this be settable */
+ __get_user(env->regs[R_GP], &gregs[25]);
+ /* Not really necessary no user settable bits */
+ __get_user(temp, &gregs[26]);
+ __get_user(env->regs[R_EA], &gregs[27]);
+
+ __get_user(env->regs[R_RA], &gregs[23]);
+ __get_user(env->regs[R_SP], &gregs[28]);
+
+ off = offsetof(struct target_rt_sigframe, uc.tuc_stack);
+ err = do_sigaltstack(frame_addr + off, 0, get_sp_from_cpustate(env));
+ if (err == -EFAULT) {
+ return 1;
+ }
+
+ *pr2 = env->regs[2];
+ return 0;
+}
+
+static void *get_sigframe(struct target_sigaction *ka, CPUNios2State *env,
+ size_t frame_size)
+{
+ unsigned long usp;
+
+ /* Default to using normal stack. */
+ usp = env->regs[R_SP];
+
+ /* This is the X/Open sanctioned signal stack switching. */
+ usp = sigsp(usp, ka);
+
+ /* Verify, is it 32 or 64 bit aligned */
+ return (void *)((usp - frame_size) & -8UL);
+}
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set,
+ CPUNios2State *env)
+{
+ struct target_rt_sigframe *frame;
+ int i, err = 0;
+
+ frame = get_sigframe(ka, env, sizeof(*frame));
+
+ if (ka->sa_flags & SA_SIGINFO) {
+ tswap_siginfo(&frame->info, info);
+ }
+
+ /* Create the ucontext. */
+ __put_user(0, &frame->uc.tuc_flags);
+ __put_user(0, &frame->uc.tuc_link);
+ __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
+ __put_user(sas_ss_flags(env->regs[R_SP]), &frame->uc.tuc_stack.ss_flags);
+ __put_user(target_sigaltstack_used.ss_size, &frame->uc.tuc_stack.ss_size);
+ err |= rt_setup_ucontext(&frame->uc, env);
+ for (i = 0; i < TARGET_NSIG_WORDS; i++) {
+ __put_user((abi_ulong)set->sig[i],
+ (abi_ulong *)&frame->uc.tuc_sigmask.sig[i]);
+ }
+
+ if (err) {
+ goto give_sigsegv;
+ }
+
+ /* Set up to return from userspace; jump to fixed address sigreturn
+ trampoline on kuser page. */
+ env->regs[R_RA] = (unsigned long) (0x1044);
+
+ /* Set up registers for signal handler */
+ env->regs[R_SP] = (unsigned long) frame;
+ env->regs[4] = (unsigned long) sig;
+ env->regs[5] = (unsigned long) &frame->info;
+ env->regs[6] = (unsigned long) &frame->uc;
+ env->regs[R_EA] = (unsigned long) ka->_sa_handler;
+ return;
+
+give_sigsegv:
+ if (sig == TARGET_SIGSEGV) {
+ ka->_sa_handler = TARGET_SIG_DFL;
+ }
+ force_sigsegv(sig);
+ return;
+}
+
+long do_sigreturn(CPUNios2State *env)
+{
+ trace_user_do_sigreturn(env, 0);
+ fprintf(stderr, "do_sigreturn: not implemented\n");
+ return -TARGET_ENOSYS;
+}
+
+long do_rt_sigreturn(CPUNios2State *env)
+{
+ /* Verify, can we follow the stack back */
+ abi_ulong frame_addr = env->regs[R_SP];
+ struct target_rt_sigframe *frame;
+ sigset_t set;
+ int rval;
+
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+
+ target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
+ do_sigprocmask(SIG_SETMASK, &set, NULL);
+
+ if (rt_restore_ucontext(env, &frame->uc, &rval)) {
+ goto badframe;
+ }
+
+ unlock_user_struct(frame, frame_addr, 0);
+ return rval;
+
+badframe:
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return 0;
+}
+/* TARGET_NIOS2 */
diff --git a/linux-user/openrisc/signal.inc.c b/linux-user/openrisc/signal.inc.c
new file mode 100644
index 0000000000..0c3cc0d30c
--- /dev/null
+++ b/linux-user/openrisc/signal.inc.c
@@ -0,0 +1,209 @@
+
+struct target_sigcontext {
+ struct target_pt_regs regs;
+ abi_ulong oldmask;
+ abi_ulong usp;
+};
+
+struct target_ucontext {
+ abi_ulong tuc_flags;
+ abi_ulong tuc_link;
+ target_stack_t tuc_stack;
+ struct target_sigcontext tuc_mcontext;
+ target_sigset_t tuc_sigmask; /* mask last for extensibility */
+};
+
+struct target_rt_sigframe {
+ abi_ulong pinfo;
+ uint64_t puc;
+ struct target_siginfo info;
+ struct target_sigcontext sc;
+ struct target_ucontext uc;
+ unsigned char retcode[16]; /* trampoline code */
+};
+
+/* This is the asm-generic/ucontext.h version */
+#if 0
+static int restore_sigcontext(CPUOpenRISCState *regs,
+ struct target_sigcontext *sc)
+{
+ unsigned int err = 0;
+ unsigned long old_usp;
+
+ /* Alwys make any pending restarted system call return -EINTR */
+ current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
+ /* restore the regs from &sc->regs (same as sc, since regs is first)
+ * (sc is already checked for VERIFY_READ since the sigframe was
+ * checked in sys_sigreturn previously)
+ */
+
+ if (copy_from_user(regs, &sc, sizeof(struct target_pt_regs))) {
+ goto badframe;
+ }
+
+ /* make sure the U-flag is set so user-mode cannot fool us */
+
+ regs->sr &= ~SR_SM;
+
+ /* restore the old USP as it was before we stacked the sc etc.
+ * (we cannot just pop the sigcontext since we aligned the sp and
+ * stuff after pushing it)
+ */
+
+ __get_user(old_usp, &sc->usp);
+ phx_signal("old_usp 0x%lx", old_usp);
+
+ __PHX__ REALLY /* ??? */
+ wrusp(old_usp);
+ regs->gpr[1] = old_usp;
+
+ /* TODO: the other ports use regs->orig_XX to disable syscall checks
+ * after this completes, but we don't use that mechanism. maybe we can
+ * use it now ?
+ */
+
+ return err;
+
+badframe:
+ return 1;
+}
+#endif
+
+/* Set up a signal frame. */
+
+static void setup_sigcontext(struct target_sigcontext *sc,
+ CPUOpenRISCState *regs,
+ unsigned long mask)
+{
+ unsigned long usp = cpu_get_gpr(regs, 1);
+
+ /* copy the regs. they are first in sc so we can use sc directly */
+
+ /*copy_to_user(&sc, regs, sizeof(struct target_pt_regs));*/
+
+ /* Set the frametype to CRIS_FRAME_NORMAL for the execution of
+ the signal handler. The frametype will be restored to its previous
+ value in restore_sigcontext. */
+ /*regs->frametype = CRIS_FRAME_NORMAL;*/
+
+ /* then some other stuff */
+ __put_user(mask, &sc->oldmask);
+ __put_user(usp, &sc->usp);
+}
+
+static inline unsigned long align_sigframe(unsigned long sp)
+{
+ return sp & ~3UL;
+}
+
+static inline abi_ulong get_sigframe(struct target_sigaction *ka,
+ CPUOpenRISCState *regs,
+ size_t frame_size)
+{
+ unsigned long sp = cpu_get_gpr(regs, 1);
+ int onsigstack = on_sig_stack(sp);
+
+ /* redzone */
+ /* This is the X/Open sanctioned signal stack switching. */
+ if ((ka->sa_flags & TARGET_SA_ONSTACK) != 0 && !onsigstack) {
+ sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
+ }
+
+ sp = align_sigframe(sp - frame_size);
+
+ /*
+ * If we are on the alternate signal stack and would overflow it, don't.
+ * Return an always-bogus address instead so we will die with SIGSEGV.
+ */
+
+ if (onsigstack && !likely(on_sig_stack(sp))) {
+ return -1L;
+ }
+
+ return sp;
+}
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPUOpenRISCState *env)
+{
+ int err = 0;
+ abi_ulong frame_addr;
+ unsigned long return_ip;
+ struct target_rt_sigframe *frame;
+ abi_ulong info_addr, uc_addr;
+
+ frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_rt_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
+
+ info_addr = frame_addr + offsetof(struct target_rt_sigframe, info);
+ __put_user(info_addr, &frame->pinfo);
+ uc_addr = frame_addr + offsetof(struct target_rt_sigframe, uc);
+ __put_user(uc_addr, &frame->puc);
+
+ if (ka->sa_flags & SA_SIGINFO) {
+ tswap_siginfo(&frame->info, info);
+ }
+
+ /*err |= __clear_user(&frame->uc, offsetof(ucontext_t, uc_mcontext));*/
+ __put_user(0, &frame->uc.tuc_flags);
+ __put_user(0, &frame->uc.tuc_link);
+ __put_user(target_sigaltstack_used.ss_sp,
+ &frame->uc.tuc_stack.ss_sp);
+ __put_user(sas_ss_flags(cpu_get_gpr(env, 1)),
+ &frame->uc.tuc_stack.ss_flags);
+ __put_user(target_sigaltstack_used.ss_size,
+ &frame->uc.tuc_stack.ss_size);
+ setup_sigcontext(&frame->sc, env, set->sig[0]);
+
+ /*err |= copy_to_user(frame->uc.tuc_sigmask, set, sizeof(*set));*/
+
+ /* trampoline - the desired return ip is the retcode itself */
+ return_ip = (unsigned long)&frame->retcode;
+ /* This is l.ori r11,r0,__NR_sigreturn, l.sys 1 */
+ __put_user(0xa960, (short *)(frame->retcode + 0));
+ __put_user(TARGET_NR_rt_sigreturn, (short *)(frame->retcode + 2));
+ __put_user(0x20000001, (unsigned long *)(frame->retcode + 4));
+ __put_user(0x15000000, (unsigned long *)(frame->retcode + 8));
+
+ if (err) {
+ goto give_sigsegv;
+ }
+
+ /* TODO what is the current->exec_domain stuff and invmap ? */
+
+ /* Set up registers for signal handler */
+ env->pc = (unsigned long)ka->_sa_handler; /* what we enter NOW */
+ cpu_set_gpr(env, 9, (unsigned long)return_ip); /* what we enter LATER
*/
+ cpu_set_gpr(env, 3, (unsigned long)sig); /* arg 1: signo */
+ cpu_set_gpr(env, 4, (unsigned long)&frame->info); /* arg 2: (siginfo_t*)
*/
+ cpu_set_gpr(env, 5, (unsigned long)&frame->uc); /* arg 3: ucontext */
+
+ /* actually move the usp to reflect the stacked frame */
+ cpu_set_gpr(env, 1, (unsigned long)frame);
+
+ return;
+
+give_sigsegv:
+ unlock_user_struct(frame, frame_addr, 1);
+ force_sigsegv(sig);
+}
+
+long do_sigreturn(CPUOpenRISCState *env)
+{
+ trace_user_do_sigreturn(env, 0);
+ fprintf(stderr, "do_sigreturn: not implemented\n");
+ return -TARGET_ENOSYS;
+}
+
+long do_rt_sigreturn(CPUOpenRISCState *env)
+{
+ trace_user_do_rt_sigreturn(env, 0);
+ fprintf(stderr, "do_rt_sigreturn: not implemented\n");
+ return -TARGET_ENOSYS;
+}
+/* TARGET_OPENRISC */
diff --git a/linux-user/ppc/signal.inc.c b/linux-user/ppc/signal.inc.c
new file mode 100644
index 0000000000..ea3ee45202
--- /dev/null
+++ b/linux-user/ppc/signal.inc.c
@@ -0,0 +1,667 @@
+
+/* Size of dummy stack frame allocated when calling signal handler.
+ See arch/powerpc/include/asm/ptrace.h. */
+#if defined(TARGET_PPC64)
+#define SIGNAL_FRAMESIZE 128
+#else
+#define SIGNAL_FRAMESIZE 64
+#endif
+
+/* See arch/powerpc/include/asm/ucontext.h. Only used for 32-bit PPC;
+ on 64-bit PPC, sigcontext and mcontext are one and the same. */
+struct target_mcontext {
+ target_ulong mc_gregs[48];
+ /* Includes fpscr. */
+ uint64_t mc_fregs[33];
+#if defined(TARGET_PPC64)
+ /* Pointer to the vector regs */
+ target_ulong v_regs;
+#else
+ target_ulong mc_pad[2];
+#endif
+ /* We need to handle Altivec and SPE at the same time, which no
+ kernel needs to do. Fortunately, the kernel defines this bit to
+ be Altivec-register-large all the time, rather than trying to
+ twiddle it based on the specific platform. */
+ union {
+ /* SPE vector registers. One extra for SPEFSCR. */
+ uint32_t spe[33];
+ /* Altivec vector registers. The packing of VSCR and VRSAVE
+ varies depending on whether we're PPC64 or not: PPC64 splits
+ them apart; PPC32 stuffs them together.
+ We also need to account for the VSX registers on PPC64
+ */
+#if defined(TARGET_PPC64)
+#define QEMU_NVRREG (34 + 16)
+ /* On ppc64, this mcontext structure is naturally *unaligned*,
+ * or rather it is aligned on a 8 bytes boundary but not on
+ * a 16 bytes one. This pad fixes it up. This is also why the
+ * vector regs are referenced by the v_regs pointer above so
+ * any amount of padding can be added here
+ */
+ target_ulong pad;
+#else
+ /* On ppc32, we are already aligned to 16 bytes */
+#define QEMU_NVRREG 33
+#endif
+ /* We cannot use ppc_avr_t here as we do *not* want the implied
+ * 16-bytes alignment that would result from it. This would have
+ * the effect of making the whole struct target_mcontext aligned
+ * which breaks the layout of struct target_ucontext on ppc64.
+ */
+ uint64_t altivec[QEMU_NVRREG][2];
+#undef QEMU_NVRREG
+ } mc_vregs;
+};
+
+/* See arch/powerpc/include/asm/sigcontext.h. */
+struct target_sigcontext {
+ target_ulong _unused[4];
+ int32_t signal;
+#if defined(TARGET_PPC64)
+ int32_t pad0;
+#endif
+ target_ulong handler;
+ target_ulong oldmask;
+ target_ulong regs; /* struct pt_regs __user * */
+#if defined(TARGET_PPC64)
+ struct target_mcontext mcontext;
+#endif
+};
+
+/* Indices for target_mcontext.mc_gregs, below.
+ See arch/powerpc/include/asm/ptrace.h for details. */
+enum {
+ TARGET_PT_R0 = 0,
+ TARGET_PT_R1 = 1,
+ TARGET_PT_R2 = 2,
+ TARGET_PT_R3 = 3,
+ TARGET_PT_R4 = 4,
+ TARGET_PT_R5 = 5,
+ TARGET_PT_R6 = 6,
+ TARGET_PT_R7 = 7,
+ TARGET_PT_R8 = 8,
+ TARGET_PT_R9 = 9,
+ TARGET_PT_R10 = 10,
+ TARGET_PT_R11 = 11,
+ TARGET_PT_R12 = 12,
+ TARGET_PT_R13 = 13,
+ TARGET_PT_R14 = 14,
+ TARGET_PT_R15 = 15,
+ TARGET_PT_R16 = 16,
+ TARGET_PT_R17 = 17,
+ TARGET_PT_R18 = 18,
+ TARGET_PT_R19 = 19,
+ TARGET_PT_R20 = 20,
+ TARGET_PT_R21 = 21,
+ TARGET_PT_R22 = 22,
+ TARGET_PT_R23 = 23,
+ TARGET_PT_R24 = 24,
+ TARGET_PT_R25 = 25,
+ TARGET_PT_R26 = 26,
+ TARGET_PT_R27 = 27,
+ TARGET_PT_R28 = 28,
+ TARGET_PT_R29 = 29,
+ TARGET_PT_R30 = 30,
+ TARGET_PT_R31 = 31,
+ TARGET_PT_NIP = 32,
+ TARGET_PT_MSR = 33,
+ TARGET_PT_ORIG_R3 = 34,
+ TARGET_PT_CTR = 35,
+ TARGET_PT_LNK = 36,
+ TARGET_PT_XER = 37,
+ TARGET_PT_CCR = 38,
+ /* Yes, there are two registers with #39. One is 64-bit only. */
+ TARGET_PT_MQ = 39,
+ TARGET_PT_SOFTE = 39,
+ TARGET_PT_TRAP = 40,
+ TARGET_PT_DAR = 41,
+ TARGET_PT_DSISR = 42,
+ TARGET_PT_RESULT = 43,
+ TARGET_PT_REGS_COUNT = 44
+};
+
+
+struct target_ucontext {
+ target_ulong tuc_flags;
+ target_ulong tuc_link; /* ucontext_t __user * */
+ struct target_sigaltstack tuc_stack;
+#if !defined(TARGET_PPC64)
+ int32_t tuc_pad[7];
+ target_ulong tuc_regs; /* struct mcontext __user *
+ points to uc_mcontext field */
+#endif
+ target_sigset_t tuc_sigmask;
+#if defined(TARGET_PPC64)
+ target_sigset_t unused[15]; /* Allow for uc_sigmask growth */
+ struct target_sigcontext tuc_sigcontext;
+#else
+ int32_t tuc_maskext[30];
+ int32_t tuc_pad2[3];
+ struct target_mcontext tuc_mcontext;
+#endif
+};
+
+/* See arch/powerpc/kernel/signal_32.c. */
+struct target_sigframe {
+ struct target_sigcontext sctx;
+ struct target_mcontext mctx;
+ int32_t abigap[56];
+};
+
+#if defined(TARGET_PPC64)
+
+#define TARGET_TRAMP_SIZE 6
+
+struct target_rt_sigframe {
+ /* sys_rt_sigreturn requires the ucontext be the first field */
+ struct target_ucontext uc;
+ target_ulong _unused[2];
+ uint32_t trampoline[TARGET_TRAMP_SIZE];
+ target_ulong pinfo; /* struct siginfo __user * */
+ target_ulong puc; /* void __user * */
+ struct target_siginfo info;
+ /* 64 bit ABI allows for 288 bytes below sp before decrementing it. */
+ char abigap[288];
+} __attribute__((aligned(16)));
+
+#else
+
+struct target_rt_sigframe {
+ struct target_siginfo info;
+ struct target_ucontext uc;
+ int32_t abigap[56];
+};
+
+#endif
+
+#if defined(TARGET_PPC64)
+
+struct target_func_ptr {
+ target_ulong entry;
+ target_ulong toc;
+};
+
+#endif
+
+/* We use the mc_pad field for the signal return trampoline. */
+#define tramp mc_pad
+
+/* See arch/powerpc/kernel/signal.c. */
+static target_ulong get_sigframe(struct target_sigaction *ka,
+ CPUPPCState *env,
+ int frame_size)
+{
+ target_ulong oldsp;
+
+ oldsp = env->gpr[1];
+
+ if ((ka->sa_flags & TARGET_SA_ONSTACK) &&
+ (sas_ss_flags(oldsp) == 0)) {
+ oldsp = (target_sigaltstack_used.ss_sp
+ + target_sigaltstack_used.ss_size);
+ }
+
+ return (oldsp - frame_size) & ~0xFUL;
+}
+
+#if ((defined(TARGET_WORDS_BIGENDIAN) && defined(HOST_WORDS_BIGENDIAN)) || \
+ (!defined(HOST_WORDS_BIGENDIAN) && !defined(TARGET_WORDS_BIGENDIAN)))
+#define PPC_VEC_HI 0
+#define PPC_VEC_LO 1
+#else
+#define PPC_VEC_HI 1
+#define PPC_VEC_LO 0
+#endif
+
+
+static void save_user_regs(CPUPPCState *env, struct target_mcontext *frame)
+{
+ target_ulong msr = env->msr;
+ int i;
+ target_ulong ccr = 0;
+
+ /* In general, the kernel attempts to be intelligent about what it
+ needs to save for Altivec/FP/SPE registers. We don't care that
+ much, so we just go ahead and save everything. */
+
+ /* Save general registers. */
+ for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
+ __put_user(env->gpr[i], &frame->mc_gregs[i]);
+ }
+ __put_user(env->nip, &frame->mc_gregs[TARGET_PT_NIP]);
+ __put_user(env->ctr, &frame->mc_gregs[TARGET_PT_CTR]);
+ __put_user(env->lr, &frame->mc_gregs[TARGET_PT_LNK]);
+ __put_user(env->xer, &frame->mc_gregs[TARGET_PT_XER]);
+
+ for (i = 0; i < ARRAY_SIZE(env->crf); i++) {
+ ccr |= env->crf[i] << (32 - ((i + 1) * 4));
+ }
+ __put_user(ccr, &frame->mc_gregs[TARGET_PT_CCR]);
+
+ /* Save Altivec registers if necessary. */
+ if (env->insns_flags & PPC_ALTIVEC) {
+ uint32_t *vrsave;
+ for (i = 0; i < ARRAY_SIZE(env->avr); i++) {
+ ppc_avr_t *avr = &env->avr[i];
+ ppc_avr_t *vreg = (ppc_avr_t *)&frame->mc_vregs.altivec[i];
+
+ __put_user(avr->u64[PPC_VEC_HI], &vreg->u64[0]);
+ __put_user(avr->u64[PPC_VEC_LO], &vreg->u64[1]);
+ }
+ /* Set MSR_VR in the saved MSR value to indicate that
+ frame->mc_vregs contains valid data. */
+ msr |= MSR_VR;
+#if defined(TARGET_PPC64)
+ vrsave = (uint32_t *)&frame->mc_vregs.altivec[33];
+ /* 64-bit needs to put a pointer to the vectors in the frame */
+ __put_user(h2g(frame->mc_vregs.altivec), &frame->v_regs);
+#else
+ vrsave = (uint32_t *)&frame->mc_vregs.altivec[32];
+#endif
+ __put_user((uint32_t)env->spr[SPR_VRSAVE], vrsave);
+ }
+
+ /* Save VSX second halves */
+ if (env->insns_flags2 & PPC2_VSX) {
+ uint64_t *vsregs = (uint64_t *)&frame->mc_vregs.altivec[34];
+ for (i = 0; i < ARRAY_SIZE(env->vsr); i++) {
+ __put_user(env->vsr[i], &vsregs[i]);
+ }
+ }
+
+ /* Save floating point registers. */
+ if (env->insns_flags & PPC_FLOAT) {
+ for (i = 0; i < ARRAY_SIZE(env->fpr); i++) {
+ __put_user(env->fpr[i], &frame->mc_fregs[i]);
+ }
+ __put_user((uint64_t) env->fpscr, &frame->mc_fregs[32]);
+ }
+
+ /* Save SPE registers. The kernel only saves the high half. */
+ if (env->insns_flags & PPC_SPE) {
+#if defined(TARGET_PPC64)
+ for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
+ __put_user(env->gpr[i] >> 32, &frame->mc_vregs.spe[i]);
+ }
+#else
+ for (i = 0; i < ARRAY_SIZE(env->gprh); i++) {
+ __put_user(env->gprh[i], &frame->mc_vregs.spe[i]);
+ }
+#endif
+ /* Set MSR_SPE in the saved MSR value to indicate that
+ frame->mc_vregs contains valid data. */
+ msr |= MSR_SPE;
+ __put_user(env->spe_fscr, &frame->mc_vregs.spe[32]);
+ }
+
+ /* Store MSR. */
+ __put_user(msr, &frame->mc_gregs[TARGET_PT_MSR]);
+}
+
+static void encode_trampoline(int sigret, uint32_t *tramp)
+{
+ /* Set up the sigreturn trampoline: li r0,sigret; sc. */
+ if (sigret) {
+ __put_user(0x38000000 | sigret, &tramp[0]);
+ __put_user(0x44000002, &tramp[1]);
+ }
+}
+
+static void restore_user_regs(CPUPPCState *env,
+ struct target_mcontext *frame, int sig)
+{
+ target_ulong save_r2 = 0;
+ target_ulong msr;
+ target_ulong ccr;
+
+ int i;
+
+ if (!sig) {
+ save_r2 = env->gpr[2];
+ }
+
+ /* Restore general registers. */
+ for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
+ __get_user(env->gpr[i], &frame->mc_gregs[i]);
+ }
+ __get_user(env->nip, &frame->mc_gregs[TARGET_PT_NIP]);
+ __get_user(env->ctr, &frame->mc_gregs[TARGET_PT_CTR]);
+ __get_user(env->lr, &frame->mc_gregs[TARGET_PT_LNK]);
+ __get_user(env->xer, &frame->mc_gregs[TARGET_PT_XER]);
+ __get_user(ccr, &frame->mc_gregs[TARGET_PT_CCR]);
+
+ for (i = 0; i < ARRAY_SIZE(env->crf); i++) {
+ env->crf[i] = (ccr >> (32 - ((i + 1) * 4))) & 0xf;
+ }
+
+ if (!sig) {
+ env->gpr[2] = save_r2;
+ }
+ /* Restore MSR. */
+ __get_user(msr, &frame->mc_gregs[TARGET_PT_MSR]);
+
+ /* If doing signal return, restore the previous little-endian mode. */
+ if (sig)
+ env->msr = (env->msr & ~(1ull << MSR_LE)) | (msr & (1ull << MSR_LE));
+
+ /* Restore Altivec registers if necessary. */
+ if (env->insns_flags & PPC_ALTIVEC) {
+ ppc_avr_t *v_regs;
+ uint32_t *vrsave;
+#if defined(TARGET_PPC64)
+ uint64_t v_addr;
+ /* 64-bit needs to recover the pointer to the vectors from the frame */
+ __get_user(v_addr, &frame->v_regs);
+ v_regs = g2h(v_addr);
+#else
+ v_regs = (ppc_avr_t *)frame->mc_vregs.altivec;
+#endif
+ for (i = 0; i < ARRAY_SIZE(env->avr); i++) {
+ ppc_avr_t *avr = &env->avr[i];
+ ppc_avr_t *vreg = &v_regs[i];
+
+ __get_user(avr->u64[PPC_VEC_HI], &vreg->u64[0]);
+ __get_user(avr->u64[PPC_VEC_LO], &vreg->u64[1]);
+ }
+ /* Set MSR_VEC in the saved MSR value to indicate that
+ frame->mc_vregs contains valid data. */
+#if defined(TARGET_PPC64)
+ vrsave = (uint32_t *)&v_regs[33];
+#else
+ vrsave = (uint32_t *)&v_regs[32];
+#endif
+ __get_user(env->spr[SPR_VRSAVE], vrsave);
+ }
+
+ /* Restore VSX second halves */
+ if (env->insns_flags2 & PPC2_VSX) {
+ uint64_t *vsregs = (uint64_t *)&frame->mc_vregs.altivec[34];
+ for (i = 0; i < ARRAY_SIZE(env->vsr); i++) {
+ __get_user(env->vsr[i], &vsregs[i]);
+ }
+ }
+
+ /* Restore floating point registers. */
+ if (env->insns_flags & PPC_FLOAT) {
+ uint64_t fpscr;
+ for (i = 0; i < ARRAY_SIZE(env->fpr); i++) {
+ __get_user(env->fpr[i], &frame->mc_fregs[i]);
+ }
+ __get_user(fpscr, &frame->mc_fregs[32]);
+ env->fpscr = (uint32_t) fpscr;
+ }
+
+ /* Save SPE registers. The kernel only saves the high half. */
+ if (env->insns_flags & PPC_SPE) {
+#if defined(TARGET_PPC64)
+ for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
+ uint32_t hi;
+
+ __get_user(hi, &frame->mc_vregs.spe[i]);
+ env->gpr[i] = ((uint64_t)hi << 32) | ((uint32_t) env->gpr[i]);
+ }
+#else
+ for (i = 0; i < ARRAY_SIZE(env->gprh); i++) {
+ __get_user(env->gprh[i], &frame->mc_vregs.spe[i]);
+ }
+#endif
+ __get_user(env->spe_fscr, &frame->mc_vregs.spe[32]);
+ }
+}
+
+#if !defined(TARGET_PPC64)
+static void setup_frame(int sig, struct target_sigaction *ka,
+ target_sigset_t *set, CPUPPCState *env)
+{
+ struct target_sigframe *frame;
+ struct target_sigcontext *sc;
+ target_ulong frame_addr, newsp;
+ int err = 0;
+
+ frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
+ goto sigsegv;
+ sc = &frame->sctx;
+
+ __put_user(ka->_sa_handler, &sc->handler);
+ __put_user(set->sig[0], &sc->oldmask);
+ __put_user(set->sig[1], &sc->_unused[3]);
+ __put_user(h2g(&frame->mctx), &sc->regs);
+ __put_user(sig, &sc->signal);
+
+ /* Save user regs. */
+ save_user_regs(env, &frame->mctx);
+
+ /* Construct the trampoline code on the stack. */
+ encode_trampoline(TARGET_NR_sigreturn, (uint32_t *)&frame->mctx.tramp);
+
+ /* The kernel checks for the presence of a VDSO here. We don't
+ emulate a vdso, so use a sigreturn system call. */
+ env->lr = (target_ulong) h2g(frame->mctx.tramp);
+
+ /* Turn off all fp exceptions. */
+ env->fpscr = 0;
+
+ /* Create a stack frame for the caller of the handler. */
+ newsp = frame_addr - SIGNAL_FRAMESIZE;
+ err |= put_user(env->gpr[1], newsp, target_ulong);
+
+ if (err)
+ goto sigsegv;
+
+ /* Set up registers for signal handler. */
+ env->gpr[1] = newsp;
+ env->gpr[3] = sig;
+ env->gpr[4] = frame_addr + offsetof(struct target_sigframe, sctx);
+
+ env->nip = (target_ulong) ka->_sa_handler;
+
+ /* Signal handlers are entered in big-endian mode. */
+ env->msr &= ~(1ull << MSR_LE);
+
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+
+sigsegv:
+ unlock_user_struct(frame, frame_addr, 1);
+ force_sigsegv(sig);
+}
+#endif /* !defined(TARGET_PPC64) */
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPUPPCState *env)
+{
+ struct target_rt_sigframe *rt_sf;
+ uint32_t *trampptr = 0;
+ struct target_mcontext *mctx = 0;
+ target_ulong rt_sf_addr, newsp = 0;
+ int i, err = 0;
+#if defined(TARGET_PPC64)
+ struct target_sigcontext *sc = 0;
+ struct image_info *image = ((TaskState *)thread_cpu->opaque)->info;
+#endif
+
+ rt_sf_addr = get_sigframe(ka, env, sizeof(*rt_sf));
+ if (!lock_user_struct(VERIFY_WRITE, rt_sf, rt_sf_addr, 1))
+ goto sigsegv;
+
+ tswap_siginfo(&rt_sf->info, info);
+
+ __put_user(0, &rt_sf->uc.tuc_flags);
+ __put_user(0, &rt_sf->uc.tuc_link);
+ __put_user((target_ulong)target_sigaltstack_used.ss_sp,
+ &rt_sf->uc.tuc_stack.ss_sp);
+ __put_user(sas_ss_flags(env->gpr[1]),
+ &rt_sf->uc.tuc_stack.ss_flags);
+ __put_user(target_sigaltstack_used.ss_size,
+ &rt_sf->uc.tuc_stack.ss_size);
+#if !defined(TARGET_PPC64)
+ __put_user(h2g (&rt_sf->uc.tuc_mcontext),
+ &rt_sf->uc.tuc_regs);
+#endif
+ for(i = 0; i < TARGET_NSIG_WORDS; i++) {
+ __put_user(set->sig[i], &rt_sf->uc.tuc_sigmask.sig[i]);
+ }
+
+#if defined(TARGET_PPC64)
+ mctx = &rt_sf->uc.tuc_sigcontext.mcontext;
+ trampptr = &rt_sf->trampoline[0];
+
+ sc = &rt_sf->uc.tuc_sigcontext;
+ __put_user(h2g(mctx), &sc->regs);
+ __put_user(sig, &sc->signal);
+#else
+ mctx = &rt_sf->uc.tuc_mcontext;
+ trampptr = (uint32_t *)&rt_sf->uc.tuc_mcontext.tramp;
+#endif
+
+ save_user_regs(env, mctx);
+ encode_trampoline(TARGET_NR_rt_sigreturn, trampptr);
+
+ /* The kernel checks for the presence of a VDSO here. We don't
+ emulate a vdso, so use a sigreturn system call. */
+ env->lr = (target_ulong) h2g(trampptr);
+
+ /* Turn off all fp exceptions. */
+ env->fpscr = 0;
+
+ /* Create a stack frame for the caller of the handler. */
+ newsp = rt_sf_addr - (SIGNAL_FRAMESIZE + 16);
+ err |= put_user(env->gpr[1], newsp, target_ulong);
+
+ if (err)
+ goto sigsegv;
+
+ /* Set up registers for signal handler. */
+ env->gpr[1] = newsp;
+ env->gpr[3] = (target_ulong) sig;
+ env->gpr[4] = (target_ulong) h2g(&rt_sf->info);
+ env->gpr[5] = (target_ulong) h2g(&rt_sf->uc);
+ env->gpr[6] = (target_ulong) h2g(rt_sf);
+
+#if defined(TARGET_PPC64)
+ if (get_ppc64_abi(image) < 2) {
+ /* ELFv1 PPC64 function pointers are pointers to OPD entries. */
+ struct target_func_ptr *handler =
+ (struct target_func_ptr *)g2h(ka->_sa_handler);
+ env->nip = tswapl(handler->entry);
+ env->gpr[2] = tswapl(handler->toc);
+ } else {
+ /* ELFv2 PPC64 function pointers are entry points, but R12
+ * must also be set */
+ env->nip = tswapl((target_ulong) ka->_sa_handler);
+ env->gpr[12] = env->nip;
+ }
+#else
+ env->nip = (target_ulong) ka->_sa_handler;
+#endif
+
+ /* Signal handlers are entered in big-endian mode. */
+ env->msr &= ~(1ull << MSR_LE);
+
+ unlock_user_struct(rt_sf, rt_sf_addr, 1);
+ return;
+
+sigsegv:
+ unlock_user_struct(rt_sf, rt_sf_addr, 1);
+ force_sigsegv(sig);
+
+}
+
+#if !defined(TARGET_PPC64)
+long do_sigreturn(CPUPPCState *env)
+{
+ struct target_sigcontext *sc = NULL;
+ struct target_mcontext *sr = NULL;
+ target_ulong sr_addr = 0, sc_addr;
+ sigset_t blocked;
+ target_sigset_t set;
+
+ sc_addr = env->gpr[1] + SIGNAL_FRAMESIZE;
+ if (!lock_user_struct(VERIFY_READ, sc, sc_addr, 1))
+ goto sigsegv;
+
+#if defined(TARGET_PPC64)
+ set.sig[0] = sc->oldmask + ((uint64_t)(sc->_unused[3]) << 32);
+#else
+ __get_user(set.sig[0], &sc->oldmask);
+ __get_user(set.sig[1], &sc->_unused[3]);
+#endif
+ target_to_host_sigset_internal(&blocked, &set);
+ set_sigmask(&blocked);
+
+ __get_user(sr_addr, &sc->regs);
+ if (!lock_user_struct(VERIFY_READ, sr, sr_addr, 1))
+ goto sigsegv;
+ restore_user_regs(env, sr, 1);
+
+ unlock_user_struct(sr, sr_addr, 1);
+ unlock_user_struct(sc, sc_addr, 1);
+ return -TARGET_QEMU_ESIGRETURN;
+
+sigsegv:
+ unlock_user_struct(sr, sr_addr, 1);
+ unlock_user_struct(sc, sc_addr, 1);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+#endif /* !defined(TARGET_PPC64) */
+
+/* See arch/powerpc/kernel/signal_32.c. */
+static int do_setcontext(struct target_ucontext *ucp, CPUPPCState *env, int
sig)
+{
+ struct target_mcontext *mcp;
+ target_ulong mcp_addr;
+ sigset_t blocked;
+ target_sigset_t set;
+
+ if (copy_from_user(&set, h2g(ucp) + offsetof(struct target_ucontext,
tuc_sigmask),
+ sizeof (set)))
+ return 1;
+
+#if defined(TARGET_PPC64)
+ mcp_addr = h2g(ucp) +
+ offsetof(struct target_ucontext, tuc_sigcontext.mcontext);
+#else
+ __get_user(mcp_addr, &ucp->tuc_regs);
+#endif
+
+ if (!lock_user_struct(VERIFY_READ, mcp, mcp_addr, 1))
+ return 1;
+
+ target_to_host_sigset_internal(&blocked, &set);
+ set_sigmask(&blocked);
+ restore_user_regs(env, mcp, sig);
+
+ unlock_user_struct(mcp, mcp_addr, 1);
+ return 0;
+}
+
+long do_rt_sigreturn(CPUPPCState *env)
+{
+ struct target_rt_sigframe *rt_sf = NULL;
+ target_ulong rt_sf_addr;
+
+ rt_sf_addr = env->gpr[1] + SIGNAL_FRAMESIZE + 16;
+ if (!lock_user_struct(VERIFY_READ, rt_sf, rt_sf_addr, 1))
+ goto sigsegv;
+
+ if (do_setcontext(&rt_sf->uc, env, 1))
+ goto sigsegv;
+
+ do_sigaltstack(rt_sf_addr
+ + offsetof(struct target_rt_sigframe, uc.tuc_stack),
+ 0, env->gpr[1]);
+
+ unlock_user_struct(rt_sf, rt_sf_addr, 1);
+ return -TARGET_QEMU_ESIGRETURN;
+
+sigsegv:
+ unlock_user_struct(rt_sf, rt_sf_addr, 1);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
diff --git a/linux-user/riscv/signal.inc.c b/linux-user/riscv/signal.inc.c
new file mode 100644
index 0000000000..5760ac76d0
--- /dev/null
+++ b/linux-user/riscv/signal.inc.c
@@ -0,0 +1,196 @@
+
+/* Signal handler invocation must be transparent for the code being
+ interrupted. Complete CPU (hart) state is saved on entry and restored
+ before returning from the handler. Process sigmask is also saved to block
+ signals while the handler is running. The handler gets its own stack,
+ which also doubles as storage for the CPU state and sigmask.
+
+ The code below is qemu re-implementation of arch/riscv/kernel/signal.c */
+
+struct target_sigcontext {
+ abi_long pc;
+ abi_long gpr[31]; /* x0 is not present, so all offsets must be -1 */
+ uint64_t fpr[32];
+ uint32_t fcsr;
+}; /* cf. riscv-linux:arch/riscv/include/uapi/asm/ptrace.h */
+
+struct target_ucontext {
+ unsigned long uc_flags;
+ struct target_ucontext *uc_link;
+ target_stack_t uc_stack;
+ struct target_sigcontext uc_mcontext;
+ target_sigset_t uc_sigmask;
+};
+
+struct target_rt_sigframe {
+ uint32_t tramp[2]; /* not in kernel, which uses VDSO instead */
+ struct target_siginfo info;
+ struct target_ucontext uc;
+};
+
+static abi_ulong get_sigframe(struct target_sigaction *ka,
+ CPURISCVState *regs, size_t framesize)
+{
+ abi_ulong sp = regs->gpr[xSP];
+ int onsigstack = on_sig_stack(sp);
+
+ /* redzone */
+ /* This is the X/Open sanctioned signal stack switching. */
+ if ((ka->sa_flags & TARGET_SA_ONSTACK) != 0 && !onsigstack) {
+ sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
+ }
+
+ sp -= framesize;
+ sp &= ~3UL; /* align sp on 4-byte boundary */
+
+ /* If we are on the alternate signal stack and would overflow it, don't.
+ Return an always-bogus address instead so we will die with SIGSEGV. */
+ if (onsigstack && !likely(on_sig_stack(sp))) {
+ return -1L;
+ }
+
+ return sp;
+}
+
+static void setup_sigcontext(struct target_sigcontext *sc, CPURISCVState *env)
+{
+ int i;
+
+ __put_user(env->pc, &sc->pc);
+
+ for (i = 1; i < 32; i++) {
+ __put_user(env->gpr[i], &sc->gpr[i - 1]);
+ }
+ for (i = 0; i < 32; i++) {
+ __put_user(env->fpr[i], &sc->fpr[i]);
+ }
+
+ uint32_t fcsr = csr_read_helper(env, CSR_FCSR); /*riscv_get_fcsr(env);*/
+ __put_user(fcsr, &sc->fcsr);
+}
+
+static void setup_ucontext(struct target_ucontext *uc,
+ CPURISCVState *env, target_sigset_t *set)
+{
+ abi_ulong ss_sp = (target_ulong)target_sigaltstack_used.ss_sp;
+ abi_ulong ss_flags = sas_ss_flags(env->gpr[xSP]);
+ abi_ulong ss_size = target_sigaltstack_used.ss_size;
+
+ __put_user(0, &(uc->uc_flags));
+ __put_user(0, &(uc->uc_link));
+
+ __put_user(ss_sp, &(uc->uc_stack.ss_sp));
+ __put_user(ss_flags, &(uc->uc_stack.ss_flags));
+ __put_user(ss_size, &(uc->uc_stack.ss_size));
+
+ int i;
+ for (i = 0; i < TARGET_NSIG_WORDS; i++) {
+ __put_user(set->sig[i], &(uc->uc_sigmask.sig[i]));
+ }
+
+ setup_sigcontext(&uc->uc_mcontext, env);
+}
+
+static inline void install_sigtramp(uint32_t *tramp)
+{
+ __put_user(0x08b00893, tramp + 0); /* li a7, 139 = __NR_rt_sigreturn */
+ __put_user(0x00000073, tramp + 1); /* ecall */
+}
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPURISCVState *env)
+{
+ abi_ulong frame_addr;
+ struct target_rt_sigframe *frame;
+
+ frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_rt_frame(env, frame_addr);
+
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto badframe;
+ }
+
+ setup_ucontext(&frame->uc, env, set);
+ tswap_siginfo(&frame->info, info);
+ install_sigtramp(frame->tramp);
+
+ env->pc = ka->_sa_handler;
+ env->gpr[xSP] = frame_addr;
+ env->gpr[xA0] = sig;
+ env->gpr[xA1] = frame_addr + offsetof(struct target_rt_sigframe, info);
+ env->gpr[xA2] = frame_addr + offsetof(struct target_rt_sigframe, uc);
+ env->gpr[xRA] = frame_addr + offsetof(struct target_rt_sigframe, tramp);
+
+ return;
+
+badframe:
+ unlock_user_struct(frame, frame_addr, 1);
+ if (sig == TARGET_SIGSEGV) {
+ ka->_sa_handler = TARGET_SIG_DFL;
+ }
+ force_sig(TARGET_SIGSEGV);
+}
+
+static void restore_sigcontext(CPURISCVState *env, struct target_sigcontext
*sc)
+{
+ int i;
+
+ __get_user(env->pc, &sc->pc);
+
+ for (i = 1; i < 32; ++i) {
+ __get_user(env->gpr[i], &sc->gpr[i - 1]);
+ }
+ for (i = 0; i < 32; ++i) {
+ __get_user(env->fpr[i], &sc->fpr[i]);
+ }
+
+ uint32_t fcsr;
+ __get_user(fcsr, &sc->fcsr);
+ csr_write_helper(env, fcsr, CSR_FCSR);
+}
+
+static void restore_ucontext(CPURISCVState *env, struct target_ucontext *uc)
+{
+ sigset_t blocked;
+ target_sigset_t target_set;
+ int i;
+
+ target_sigemptyset(&target_set);
+ for (i = 0; i < TARGET_NSIG_WORDS; i++) {
+ __get_user(target_set.sig[i], &(uc->uc_sigmask.sig[i]));
+ }
+
+ target_to_host_sigset_internal(&blocked, &target_set);
+ set_sigmask(&blocked);
+
+ restore_sigcontext(env, &uc->uc_mcontext);
+}
+
+long do_rt_sigreturn(CPURISCVState *env)
+{
+ struct target_rt_sigframe *frame;
+ abi_ulong frame_addr;
+
+ frame_addr = env->gpr[xSP];
+ trace_user_do_sigreturn(env, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+
+ restore_ucontext(env, &frame->uc);
+
+ if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe,
+ uc.uc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) {
+ goto badframe;
+ }
+
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+badframe:
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return 0;
+}
+
diff --git a/linux-user/s390x/signal.inc.c b/linux-user/s390x/signal.inc.c
new file mode 100644
index 0000000000..d0f362084f
--- /dev/null
+++ b/linux-user/s390x/signal.inc.c
@@ -0,0 +1,305 @@
+
+#define __NUM_GPRS 16
+#define __NUM_FPRS 16
+#define __NUM_ACRS 16
+
+#define S390_SYSCALL_SIZE 2
+#define __SIGNAL_FRAMESIZE 160 /* FIXME: 31-bit mode -> 96 */
+
+#define _SIGCONTEXT_NSIG 64
+#define _SIGCONTEXT_NSIG_BPW 64 /* FIXME: 31-bit mode -> 32 */
+#define _SIGCONTEXT_NSIG_WORDS (_SIGCONTEXT_NSIG / _SIGCONTEXT_NSIG_BPW)
+#define _SIGMASK_COPY_SIZE (sizeof(unsigned long)*_SIGCONTEXT_NSIG_WORDS)
+#define PSW_ADDR_AMODE 0x0000000000000000UL /* 0x80000000UL for
31-bit */
+#define S390_SYSCALL_OPCODE ((uint16_t)0x0a00)
+
+typedef struct {
+ target_psw_t psw;
+ target_ulong gprs[__NUM_GPRS];
+ unsigned int acrs[__NUM_ACRS];
+} target_s390_regs_common;
+
+typedef struct {
+ unsigned int fpc;
+ double fprs[__NUM_FPRS];
+} target_s390_fp_regs;
+
+typedef struct {
+ target_s390_regs_common regs;
+ target_s390_fp_regs fpregs;
+} target_sigregs;
+
+struct target_sigcontext {
+ target_ulong oldmask[_SIGCONTEXT_NSIG_WORDS];
+ target_sigregs *sregs;
+};
+
+typedef struct {
+ uint8_t callee_used_stack[__SIGNAL_FRAMESIZE];
+ struct target_sigcontext sc;
+ target_sigregs sregs;
+ int signo;
+ uint8_t retcode[S390_SYSCALL_SIZE];
+} sigframe;
+
+struct target_ucontext {
+ target_ulong tuc_flags;
+ struct target_ucontext *tuc_link;
+ target_stack_t tuc_stack;
+ target_sigregs tuc_mcontext;
+ target_sigset_t tuc_sigmask; /* mask last for extensibility */
+};
+
+typedef struct {
+ uint8_t callee_used_stack[__SIGNAL_FRAMESIZE];
+ uint8_t retcode[S390_SYSCALL_SIZE];
+ struct target_siginfo info;
+ struct target_ucontext uc;
+} rt_sigframe;
+
+static inline abi_ulong
+get_sigframe(struct target_sigaction *ka, CPUS390XState *env, size_t
frame_size)
+{
+ abi_ulong sp;
+
+ /* Default to using normal stack */
+ sp = env->regs[15];
+
+ /* This is the X/Open sanctioned signal stack switching. */
+ if (ka->sa_flags & TARGET_SA_ONSTACK) {
+ if (!sas_ss_flags(sp)) {
+ sp = target_sigaltstack_used.ss_sp +
+ target_sigaltstack_used.ss_size;
+ }
+ }
+
+ /* This is the legacy signal stack switching. */
+ else if (/* FIXME !user_mode(regs) */ 0 &&
+ !(ka->sa_flags & TARGET_SA_RESTORER) &&
+ ka->sa_restorer) {
+ sp = (abi_ulong) ka->sa_restorer;
+ }
+
+ return (sp - frame_size) & -8ul;
+}
+
+static void save_sigregs(CPUS390XState *env, target_sigregs *sregs)
+{
+ int i;
+ //save_access_regs(current->thread.acrs); FIXME
+
+ /* Copy a 'clean' PSW mask to the user to avoid leaking
+ information about whether PER is currently on. */
+ __put_user(env->psw.mask, &sregs->regs.psw.mask);
+ __put_user(env->psw.addr, &sregs->regs.psw.addr);
+ for (i = 0; i < 16; i++) {
+ __put_user(env->regs[i], &sregs->regs.gprs[i]);
+ }
+ for (i = 0; i < 16; i++) {
+ __put_user(env->aregs[i], &sregs->regs.acrs[i]);
+ }
+ /*
+ * We have to store the fp registers to current->thread.fp_regs
+ * to merge them with the emulated registers.
+ */
+ //save_fp_regs(¤t->thread.fp_regs); FIXME
+ for (i = 0; i < 16; i++) {
+ __put_user(get_freg(env, i)->ll, &sregs->fpregs.fprs[i]);
+ }
+}
+
+static void setup_frame(int sig, struct target_sigaction *ka,
+ target_sigset_t *set, CPUS390XState *env)
+{
+ sigframe *frame;
+ abi_ulong frame_addr;
+
+ frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
+
+ __put_user(set->sig[0], &frame->sc.oldmask[0]);
+
+ save_sigregs(env, &frame->sregs);
+
+ __put_user((abi_ulong)(unsigned long)&frame->sregs,
+ (abi_ulong *)&frame->sc.sregs);
+
+ /* Set up to return from userspace. If provided, use a stub
+ already in userspace. */
+ if (ka->sa_flags & TARGET_SA_RESTORER) {
+ env->regs[14] = (unsigned long)
+ ka->sa_restorer | PSW_ADDR_AMODE;
+ } else {
+ env->regs[14] = (frame_addr + offsetof(sigframe, retcode))
+ | PSW_ADDR_AMODE;
+ __put_user(S390_SYSCALL_OPCODE | TARGET_NR_sigreturn,
+ (uint16_t *)(frame->retcode));
+ }
+
+ /* Set up backchain. */
+ __put_user(env->regs[15], (abi_ulong *) frame);
+
+ /* Set up registers for signal handler */
+ env->regs[15] = frame_addr;
+ env->psw.addr = (target_ulong) ka->_sa_handler | PSW_ADDR_AMODE;
+
+ env->regs[2] = sig; //map_signal(sig);
+ env->regs[3] = frame_addr += offsetof(typeof(*frame), sc);
+
+ /* We forgot to include these in the sigcontext.
+ To avoid breaking binary compatibility, they are passed as args. */
+ env->regs[4] = 0; // FIXME: no clue... current->thread.trap_no;
+ env->regs[5] = 0; // FIXME: no clue... current->thread.prot_addr;
+
+ /* Place signal number on stack to allow backtrace from handler. */
+ __put_user(env->regs[2], &frame->signo);
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+
+give_sigsegv:
+ force_sigsegv(sig);
+}
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPUS390XState *env)
+{
+ int i;
+ rt_sigframe *frame;
+ abi_ulong frame_addr;
+
+ frame_addr = get_sigframe(ka, env, sizeof *frame);
+ trace_user_setup_rt_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
+
+ tswap_siginfo(&frame->info, info);
+
+ /* Create the ucontext. */
+ __put_user(0, &frame->uc.tuc_flags);
+ __put_user((abi_ulong)0, (abi_ulong *)&frame->uc.tuc_link);
+ __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
+ __put_user(sas_ss_flags(get_sp_from_cpustate(env)),
+ &frame->uc.tuc_stack.ss_flags);
+ __put_user(target_sigaltstack_used.ss_size, &frame->uc.tuc_stack.ss_size);
+ save_sigregs(env, &frame->uc.tuc_mcontext);
+ for (i = 0; i < TARGET_NSIG_WORDS; i++) {
+ __put_user((abi_ulong)set->sig[i],
+ (abi_ulong *)&frame->uc.tuc_sigmask.sig[i]);
+ }
+
+ /* Set up to return from userspace. If provided, use a stub
+ already in userspace. */
+ if (ka->sa_flags & TARGET_SA_RESTORER) {
+ env->regs[14] = (unsigned long) ka->sa_restorer | PSW_ADDR_AMODE;
+ } else {
+ env->regs[14] = (unsigned long) frame->retcode | PSW_ADDR_AMODE;
+ __put_user(S390_SYSCALL_OPCODE | TARGET_NR_rt_sigreturn,
+ (uint16_t *)(frame->retcode));
+ }
+
+ /* Set up backchain. */
+ __put_user(env->regs[15], (abi_ulong *) frame);
+
+ /* Set up registers for signal handler */
+ env->regs[15] = frame_addr;
+ env->psw.addr = (target_ulong) ka->_sa_handler | PSW_ADDR_AMODE;
+
+ env->regs[2] = sig; //map_signal(sig);
+ env->regs[3] = frame_addr + offsetof(typeof(*frame), info);
+ env->regs[4] = frame_addr + offsetof(typeof(*frame), uc);
+ return;
+
+give_sigsegv:
+ force_sigsegv(sig);
+}
+
+static int
+restore_sigregs(CPUS390XState *env, target_sigregs *sc)
+{
+ int err = 0;
+ int i;
+
+ for (i = 0; i < 16; i++) {
+ __get_user(env->regs[i], &sc->regs.gprs[i]);
+ }
+
+ __get_user(env->psw.mask, &sc->regs.psw.mask);
+ trace_user_s390x_restore_sigregs(env, (unsigned long
long)sc->regs.psw.addr,
+ (unsigned long long)env->psw.addr);
+ __get_user(env->psw.addr, &sc->regs.psw.addr);
+ /* FIXME: 31-bit -> | PSW_ADDR_AMODE */
+
+ for (i = 0; i < 16; i++) {
+ __get_user(env->aregs[i], &sc->regs.acrs[i]);
+ }
+ for (i = 0; i < 16; i++) {
+ __get_user(get_freg(env, i)->ll, &sc->fpregs.fprs[i]);
+ }
+
+ return err;
+}
+
+long do_sigreturn(CPUS390XState *env)
+{
+ sigframe *frame;
+ abi_ulong frame_addr = env->regs[15];
+ target_sigset_t target_set;
+ sigset_t set;
+
+ trace_user_do_sigreturn(env, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+ __get_user(target_set.sig[0], &frame->sc.oldmask[0]);
+
+ target_to_host_sigset_internal(&set, &target_set);
+ set_sigmask(&set); /* ~_BLOCKABLE? */
+
+ if (restore_sigregs(env, &frame->sregs)) {
+ goto badframe;
+ }
+
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+badframe:
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
+long do_rt_sigreturn(CPUS390XState *env)
+{
+ rt_sigframe *frame;
+ abi_ulong frame_addr = env->regs[15];
+ sigset_t set;
+
+ trace_user_do_rt_sigreturn(env, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+ target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
+
+ set_sigmask(&set); /* ~_BLOCKABLE? */
+
+ if (restore_sigregs(env, &frame->uc.tuc_mcontext)) {
+ goto badframe;
+ }
+
+ if (do_sigaltstack(frame_addr + offsetof(rt_sigframe, uc.tuc_stack), 0,
+ get_sp_from_cpustate(env)) == -EFAULT) {
+ goto badframe;
+ }
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+badframe:
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
diff --git a/linux-user/sh4/signal.inc.c b/linux-user/sh4/signal.inc.c
new file mode 100644
index 0000000000..4c6369bbdb
--- /dev/null
+++ b/linux-user/sh4/signal.inc.c
@@ -0,0 +1,327 @@
+
+/*
+ * code and data structures from linux kernel:
+ * include/asm-sh/sigcontext.h
+ * arch/sh/kernel/signal.c
+ */
+
+struct target_sigcontext {
+ target_ulong oldmask;
+
+ /* CPU registers */
+ target_ulong sc_gregs[16];
+ target_ulong sc_pc;
+ target_ulong sc_pr;
+ target_ulong sc_sr;
+ target_ulong sc_gbr;
+ target_ulong sc_mach;
+ target_ulong sc_macl;
+
+ /* FPU registers */
+ target_ulong sc_fpregs[16];
+ target_ulong sc_xfpregs[16];
+ unsigned int sc_fpscr;
+ unsigned int sc_fpul;
+ unsigned int sc_ownedfp;
+};
+
+struct target_sigframe
+{
+ struct target_sigcontext sc;
+ target_ulong extramask[TARGET_NSIG_WORDS-1];
+ uint16_t retcode[3];
+};
+
+
+struct target_ucontext {
+ target_ulong tuc_flags;
+ struct target_ucontext *tuc_link;
+ target_stack_t tuc_stack;
+ struct target_sigcontext tuc_mcontext;
+ target_sigset_t tuc_sigmask; /* mask last for extensibility */
+};
+
+struct target_rt_sigframe
+{
+ struct target_siginfo info;
+ struct target_ucontext uc;
+ uint16_t retcode[3];
+};
+
+
+#define MOVW(n) (0x9300|((n)-2)) /* Move mem word at PC+n to R3 */
+#define TRAP_NOARG 0xc310 /* Syscall w/no args (NR in R3) SH3/4 */
+
+static abi_ulong get_sigframe(struct target_sigaction *ka,
+ unsigned long sp, size_t frame_size)
+{
+ if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags(sp) == 0)) {
+ sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
+ }
+
+ return (sp - frame_size) & -8ul;
+}
+
+/* Notice when we're in the middle of a gUSA region and reset.
+ Note that this will only occur for !parallel_cpus, as we will
+ translate such sequences differently in a parallel context. */
+static void unwind_gusa(CPUSH4State *regs)
+{
+ /* If the stack pointer is sufficiently negative, and we haven't
+ completed the sequence, then reset to the entry to the region. */
+ /* ??? The SH4 kernel checks for and address above 0xC0000000.
+ However, the page mappings in qemu linux-user aren't as restricted
+ and we wind up with the normal stack mapped above 0xF0000000.
+ That said, there is no reason why the kernel should be allowing
+ a gUSA region that spans 1GB. Use a tighter check here, for what
+ can actually be enabled by the immediate move. */
+ if (regs->gregs[15] >= -128u && regs->pc < regs->gregs[0]) {
+ /* Reset the PC to before the gUSA region, as computed from
+ R0 = region end, SP = -(region size), plus one more for the
+ insn that actually initializes SP to the region size. */
+ regs->pc = regs->gregs[0] + regs->gregs[15] - 2;
+
+ /* Reset the SP to the saved version in R1. */
+ regs->gregs[15] = regs->gregs[1];
+ }
+}
+
+static void setup_sigcontext(struct target_sigcontext *sc,
+ CPUSH4State *regs, unsigned long mask)
+{
+ int i;
+
+#define COPY(x) __put_user(regs->x, &sc->sc_##x)
+ COPY(gregs[0]); COPY(gregs[1]);
+ COPY(gregs[2]); COPY(gregs[3]);
+ COPY(gregs[4]); COPY(gregs[5]);
+ COPY(gregs[6]); COPY(gregs[7]);
+ COPY(gregs[8]); COPY(gregs[9]);
+ COPY(gregs[10]); COPY(gregs[11]);
+ COPY(gregs[12]); COPY(gregs[13]);
+ COPY(gregs[14]); COPY(gregs[15]);
+ COPY(gbr); COPY(mach);
+ COPY(macl); COPY(pr);
+ COPY(sr); COPY(pc);
+#undef COPY
+
+ for (i=0; i<16; i++) {
+ __put_user(regs->fregs[i], &sc->sc_fpregs[i]);
+ }
+ __put_user(regs->fpscr, &sc->sc_fpscr);
+ __put_user(regs->fpul, &sc->sc_fpul);
+
+ /* non-iBCS2 extensions.. */
+ __put_user(mask, &sc->oldmask);
+}
+
+static void restore_sigcontext(CPUSH4State *regs, struct target_sigcontext *sc)
+{
+ int i;
+
+#define COPY(x) __get_user(regs->x, &sc->sc_##x)
+ COPY(gregs[0]); COPY(gregs[1]);
+ COPY(gregs[2]); COPY(gregs[3]);
+ COPY(gregs[4]); COPY(gregs[5]);
+ COPY(gregs[6]); COPY(gregs[7]);
+ COPY(gregs[8]); COPY(gregs[9]);
+ COPY(gregs[10]); COPY(gregs[11]);
+ COPY(gregs[12]); COPY(gregs[13]);
+ COPY(gregs[14]); COPY(gregs[15]);
+ COPY(gbr); COPY(mach);
+ COPY(macl); COPY(pr);
+ COPY(sr); COPY(pc);
+#undef COPY
+
+ for (i=0; i<16; i++) {
+ __get_user(regs->fregs[i], &sc->sc_fpregs[i]);
+ }
+ __get_user(regs->fpscr, &sc->sc_fpscr);
+ __get_user(regs->fpul, &sc->sc_fpul);
+
+ regs->tra = -1; /* disable syscall checks */
+ regs->flags &= ~(DELAY_SLOT_MASK | GUSA_MASK);
+}
+
+static void setup_frame(int sig, struct target_sigaction *ka,
+ target_sigset_t *set, CPUSH4State *regs)
+{
+ struct target_sigframe *frame;
+ abi_ulong frame_addr;
+ int i;
+
+ unwind_gusa(regs);
+
+ frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame));
+ trace_user_setup_frame(regs, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
+
+ setup_sigcontext(&frame->sc, regs, set->sig[0]);
+
+ for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) {
+ __put_user(set->sig[i + 1], &frame->extramask[i]);
+ }
+
+ /* Set up to return from userspace. If provided, use a stub
+ already in userspace. */
+ if (ka->sa_flags & TARGET_SA_RESTORER) {
+ regs->pr = (unsigned long) ka->sa_restorer;
+ } else {
+ /* Generate return code (system call to sigreturn) */
+ abi_ulong retcode_addr = frame_addr +
+ offsetof(struct target_sigframe, retcode);
+ __put_user(MOVW(2), &frame->retcode[0]);
+ __put_user(TRAP_NOARG, &frame->retcode[1]);
+ __put_user((TARGET_NR_sigreturn), &frame->retcode[2]);
+ regs->pr = (unsigned long) retcode_addr;
+ }
+
+ /* Set up registers for signal handler */
+ regs->gregs[15] = frame_addr;
+ regs->gregs[4] = sig; /* Arg for signal handler */
+ regs->gregs[5] = 0;
+ regs->gregs[6] = frame_addr += offsetof(typeof(*frame), sc);
+ regs->pc = (unsigned long) ka->_sa_handler;
+ regs->flags &= ~(DELAY_SLOT_MASK | GUSA_MASK);
+
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+
+give_sigsegv:
+ unlock_user_struct(frame, frame_addr, 1);
+ force_sigsegv(sig);
+}
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPUSH4State *regs)
+{
+ struct target_rt_sigframe *frame;
+ abi_ulong frame_addr;
+ int i;
+
+ unwind_gusa(regs);
+
+ frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame));
+ trace_user_setup_rt_frame(regs, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
+
+ tswap_siginfo(&frame->info, info);
+
+ /* Create the ucontext. */
+ __put_user(0, &frame->uc.tuc_flags);
+ __put_user(0, (unsigned long *)&frame->uc.tuc_link);
+ __put_user((unsigned long)target_sigaltstack_used.ss_sp,
+ &frame->uc.tuc_stack.ss_sp);
+ __put_user(sas_ss_flags(regs->gregs[15]),
+ &frame->uc.tuc_stack.ss_flags);
+ __put_user(target_sigaltstack_used.ss_size,
+ &frame->uc.tuc_stack.ss_size);
+ setup_sigcontext(&frame->uc.tuc_mcontext,
+ regs, set->sig[0]);
+ for(i = 0; i < TARGET_NSIG_WORDS; i++) {
+ __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
+ }
+
+ /* Set up to return from userspace. If provided, use a stub
+ already in userspace. */
+ if (ka->sa_flags & TARGET_SA_RESTORER) {
+ regs->pr = (unsigned long) ka->sa_restorer;
+ } else {
+ /* Generate return code (system call to sigreturn) */
+ abi_ulong retcode_addr = frame_addr +
+ offsetof(struct target_rt_sigframe, retcode);
+ __put_user(MOVW(2), &frame->retcode[0]);
+ __put_user(TRAP_NOARG, &frame->retcode[1]);
+ __put_user((TARGET_NR_rt_sigreturn), &frame->retcode[2]);
+ regs->pr = (unsigned long) retcode_addr;
+ }
+
+ /* Set up registers for signal handler */
+ regs->gregs[15] = frame_addr;
+ regs->gregs[4] = sig; /* Arg for signal handler */
+ regs->gregs[5] = frame_addr + offsetof(typeof(*frame), info);
+ regs->gregs[6] = frame_addr + offsetof(typeof(*frame), uc);
+ regs->pc = (unsigned long) ka->_sa_handler;
+ regs->flags &= ~(DELAY_SLOT_MASK | GUSA_MASK);
+
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+
+give_sigsegv:
+ unlock_user_struct(frame, frame_addr, 1);
+ force_sigsegv(sig);
+}
+
+long do_sigreturn(CPUSH4State *regs)
+{
+ struct target_sigframe *frame;
+ abi_ulong frame_addr;
+ sigset_t blocked;
+ target_sigset_t target_set;
+ int i;
+ int err = 0;
+
+ frame_addr = regs->gregs[15];
+ trace_user_do_sigreturn(regs, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+
+ __get_user(target_set.sig[0], &frame->sc.oldmask);
+ for(i = 1; i < TARGET_NSIG_WORDS; i++) {
+ __get_user(target_set.sig[i], &frame->extramask[i - 1]);
+ }
+
+ if (err)
+ goto badframe;
+
+ target_to_host_sigset_internal(&blocked, &target_set);
+ set_sigmask(&blocked);
+
+ restore_sigcontext(regs, &frame->sc);
+
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+badframe:
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
+long do_rt_sigreturn(CPUSH4State *regs)
+{
+ struct target_rt_sigframe *frame;
+ abi_ulong frame_addr;
+ sigset_t blocked;
+
+ frame_addr = regs->gregs[15];
+ trace_user_do_rt_sigreturn(regs, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+
+ target_to_host_sigset(&blocked, &frame->uc.tuc_sigmask);
+ set_sigmask(&blocked);
+
+ restore_sigcontext(regs, &frame->uc.tuc_mcontext);
+
+ if (do_sigaltstack(frame_addr +
+ offsetof(struct target_rt_sigframe, uc.tuc_stack),
+ 0, get_sp_from_cpustate(regs)) == -EFAULT) {
+ goto badframe;
+ }
+
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+badframe:
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
diff --git a/linux-user/signal.c b/linux-user/signal.c
index 2ea3e0321f..2c08ca14cf 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -819,6492 +819,7 @@ int do_sigaction(int sig, const struct target_sigaction
*act,
return ret;
}
-#if defined(TARGET_I386)
-/* from the Linux kernel - /arch/x86/include/uapi/asm/sigcontext.h */
-
-struct target_fpreg {
- uint16_t significand[4];
- uint16_t exponent;
-};
-
-struct target_fpxreg {
- uint16_t significand[4];
- uint16_t exponent;
- uint16_t padding[3];
-};
-
-struct target_xmmreg {
- uint32_t element[4];
-};
-
-struct target_fpstate_32 {
- /* Regular FPU environment */
- uint32_t cw;
- uint32_t sw;
- uint32_t tag;
- uint32_t ipoff;
- uint32_t cssel;
- uint32_t dataoff;
- uint32_t datasel;
- struct target_fpreg st[8];
- uint16_t status;
- uint16_t magic; /* 0xffff = regular FPU data only */
-
- /* FXSR FPU environment */
- uint32_t _fxsr_env[6]; /* FXSR FPU env is ignored */
- uint32_t mxcsr;
- uint32_t reserved;
- struct target_fpxreg fxsr_st[8]; /* FXSR FPU reg data is ignored */
- struct target_xmmreg xmm[8];
- uint32_t padding[56];
-};
-
-struct target_fpstate_64 {
- /* FXSAVE format */
- uint16_t cw;
- uint16_t sw;
- uint16_t twd;
- uint16_t fop;
- uint64_t rip;
- uint64_t rdp;
- uint32_t mxcsr;
- uint32_t mxcsr_mask;
- uint32_t st_space[32];
- uint32_t xmm_space[64];
- uint32_t reserved[24];
-};
-
-#ifndef TARGET_X86_64
-# define target_fpstate target_fpstate_32
-#else
-# define target_fpstate target_fpstate_64
-#endif
-
-struct target_sigcontext_32 {
- uint16_t gs, __gsh;
- uint16_t fs, __fsh;
- uint16_t es, __esh;
- uint16_t ds, __dsh;
- uint32_t edi;
- uint32_t esi;
- uint32_t ebp;
- uint32_t esp;
- uint32_t ebx;
- uint32_t edx;
- uint32_t ecx;
- uint32_t eax;
- uint32_t trapno;
- uint32_t err;
- uint32_t eip;
- uint16_t cs, __csh;
- uint32_t eflags;
- uint32_t esp_at_signal;
- uint16_t ss, __ssh;
- uint32_t fpstate; /* pointer */
- uint32_t oldmask;
- uint32_t cr2;
-};
-
-struct target_sigcontext_64 {
- uint64_t r8;
- uint64_t r9;
- uint64_t r10;
- uint64_t r11;
- uint64_t r12;
- uint64_t r13;
- uint64_t r14;
- uint64_t r15;
-
- uint64_t rdi;
- uint64_t rsi;
- uint64_t rbp;
- uint64_t rbx;
- uint64_t rdx;
- uint64_t rax;
- uint64_t rcx;
- uint64_t rsp;
- uint64_t rip;
-
- uint64_t eflags;
-
- uint16_t cs;
- uint16_t gs;
- uint16_t fs;
- uint16_t ss;
-
- uint64_t err;
- uint64_t trapno;
- uint64_t oldmask;
- uint64_t cr2;
-
- uint64_t fpstate; /* pointer */
- uint64_t padding[8];
-};
-
-#ifndef TARGET_X86_64
-# define target_sigcontext target_sigcontext_32
-#else
-# define target_sigcontext target_sigcontext_64
-#endif
-
-/* see Linux/include/uapi/asm-generic/ucontext.h */
-struct target_ucontext {
- abi_ulong tuc_flags;
- abi_ulong tuc_link;
- target_stack_t tuc_stack;
- struct target_sigcontext tuc_mcontext;
- target_sigset_t tuc_sigmask; /* mask last for extensibility */
-};
-
-#ifndef TARGET_X86_64
-struct sigframe {
- abi_ulong pretcode;
- int sig;
- struct target_sigcontext sc;
- struct target_fpstate fpstate;
- abi_ulong extramask[TARGET_NSIG_WORDS-1];
- char retcode[8];
-};
-
-struct rt_sigframe {
- abi_ulong pretcode;
- int sig;
- abi_ulong pinfo;
- abi_ulong puc;
- struct target_siginfo info;
- struct target_ucontext uc;
- struct target_fpstate fpstate;
- char retcode[8];
-};
-
-#else
-
-struct rt_sigframe {
- abi_ulong pretcode;
- struct target_ucontext uc;
- struct target_siginfo info;
- struct target_fpstate fpstate;
-};
-
-#endif
-
-/*
- * Set up a signal frame.
- */
-
-/* XXX: save x87 state */
-static void setup_sigcontext(struct target_sigcontext *sc,
- struct target_fpstate *fpstate, CPUX86State *env, abi_ulong mask,
- abi_ulong fpstate_addr)
-{
- CPUState *cs = CPU(x86_env_get_cpu(env));
-#ifndef TARGET_X86_64
- uint16_t magic;
-
- /* already locked in setup_frame() */
- __put_user(env->segs[R_GS].selector, (unsigned int *)&sc->gs);
- __put_user(env->segs[R_FS].selector, (unsigned int *)&sc->fs);
- __put_user(env->segs[R_ES].selector, (unsigned int *)&sc->es);
- __put_user(env->segs[R_DS].selector, (unsigned int *)&sc->ds);
- __put_user(env->regs[R_EDI], &sc->edi);
- __put_user(env->regs[R_ESI], &sc->esi);
- __put_user(env->regs[R_EBP], &sc->ebp);
- __put_user(env->regs[R_ESP], &sc->esp);
- __put_user(env->regs[R_EBX], &sc->ebx);
- __put_user(env->regs[R_EDX], &sc->edx);
- __put_user(env->regs[R_ECX], &sc->ecx);
- __put_user(env->regs[R_EAX], &sc->eax);
- __put_user(cs->exception_index, &sc->trapno);
- __put_user(env->error_code, &sc->err);
- __put_user(env->eip, &sc->eip);
- __put_user(env->segs[R_CS].selector, (unsigned int *)&sc->cs);
- __put_user(env->eflags, &sc->eflags);
- __put_user(env->regs[R_ESP], &sc->esp_at_signal);
- __put_user(env->segs[R_SS].selector, (unsigned int *)&sc->ss);
-
- cpu_x86_fsave(env, fpstate_addr, 1);
- fpstate->status = fpstate->sw;
- magic = 0xffff;
- __put_user(magic, &fpstate->magic);
- __put_user(fpstate_addr, &sc->fpstate);
-
- /* non-iBCS2 extensions.. */
- __put_user(mask, &sc->oldmask);
- __put_user(env->cr[2], &sc->cr2);
-#else
- __put_user(env->regs[R_EDI], &sc->rdi);
- __put_user(env->regs[R_ESI], &sc->rsi);
- __put_user(env->regs[R_EBP], &sc->rbp);
- __put_user(env->regs[R_ESP], &sc->rsp);
- __put_user(env->regs[R_EBX], &sc->rbx);
- __put_user(env->regs[R_EDX], &sc->rdx);
- __put_user(env->regs[R_ECX], &sc->rcx);
- __put_user(env->regs[R_EAX], &sc->rax);
-
- __put_user(env->regs[8], &sc->r8);
- __put_user(env->regs[9], &sc->r9);
- __put_user(env->regs[10], &sc->r10);
- __put_user(env->regs[11], &sc->r11);
- __put_user(env->regs[12], &sc->r12);
- __put_user(env->regs[13], &sc->r13);
- __put_user(env->regs[14], &sc->r14);
- __put_user(env->regs[15], &sc->r15);
-
- __put_user(cs->exception_index, &sc->trapno);
- __put_user(env->error_code, &sc->err);
- __put_user(env->eip, &sc->rip);
-
- __put_user(env->eflags, &sc->eflags);
- __put_user(env->segs[R_CS].selector, &sc->cs);
- __put_user((uint16_t)0, &sc->gs);
- __put_user((uint16_t)0, &sc->fs);
- __put_user(env->segs[R_SS].selector, &sc->ss);
-
- __put_user(mask, &sc->oldmask);
- __put_user(env->cr[2], &sc->cr2);
-
- /* fpstate_addr must be 16 byte aligned for fxsave */
- assert(!(fpstate_addr & 0xf));
-
- cpu_x86_fxsave(env, fpstate_addr);
- __put_user(fpstate_addr, &sc->fpstate);
-#endif
-}
-
-/*
- * Determine which stack to use..
- */
-
-static inline abi_ulong
-get_sigframe(struct target_sigaction *ka, CPUX86State *env, size_t frame_size)
-{
- unsigned long esp;
-
- /* Default to using normal stack */
- esp = env->regs[R_ESP];
-#ifdef TARGET_X86_64
- esp -= 128; /* this is the redzone */
-#endif
-
- /* This is the X/Open sanctioned signal stack switching. */
- if (ka->sa_flags & TARGET_SA_ONSTACK) {
- if (sas_ss_flags(esp) == 0) {
- esp = target_sigaltstack_used.ss_sp +
target_sigaltstack_used.ss_size;
- }
- } else {
-#ifndef TARGET_X86_64
- /* This is the legacy signal stack switching. */
- if ((env->segs[R_SS].selector & 0xffff) != __USER_DS &&
- !(ka->sa_flags & TARGET_SA_RESTORER) &&
- ka->sa_restorer) {
- esp = (unsigned long) ka->sa_restorer;
- }
-#endif
- }
-
-#ifndef TARGET_X86_64
- return (esp - frame_size) & -8ul;
-#else
- return ((esp - frame_size) & (~15ul)) - 8;
-#endif
-}
-
-#ifndef TARGET_X86_64
-/* compare linux/arch/i386/kernel/signal.c:setup_frame() */
-static void setup_frame(int sig, struct target_sigaction *ka,
- target_sigset_t *set, CPUX86State *env)
-{
- abi_ulong frame_addr;
- struct sigframe *frame;
- int i;
-
- frame_addr = get_sigframe(ka, env, sizeof(*frame));
- trace_user_setup_frame(env, frame_addr);
-
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
- goto give_sigsegv;
-
- __put_user(sig, &frame->sig);
-
- setup_sigcontext(&frame->sc, &frame->fpstate, env, set->sig[0],
- frame_addr + offsetof(struct sigframe, fpstate));
-
- for(i = 1; i < TARGET_NSIG_WORDS; i++) {
- __put_user(set->sig[i], &frame->extramask[i - 1]);
- }
-
- /* Set up to return from userspace. If provided, use a stub
- already in userspace. */
- if (ka->sa_flags & TARGET_SA_RESTORER) {
- __put_user(ka->sa_restorer, &frame->pretcode);
- } else {
- uint16_t val16;
- abi_ulong retcode_addr;
- retcode_addr = frame_addr + offsetof(struct sigframe, retcode);
- __put_user(retcode_addr, &frame->pretcode);
- /* This is popl %eax ; movl $,%eax ; int $0x80 */
- val16 = 0xb858;
- __put_user(val16, (uint16_t *)(frame->retcode+0));
- __put_user(TARGET_NR_sigreturn, (int *)(frame->retcode+2));
- val16 = 0x80cd;
- __put_user(val16, (uint16_t *)(frame->retcode+6));
- }
-
- /* Set up registers for signal handler */
- env->regs[R_ESP] = frame_addr;
- env->eip = ka->_sa_handler;
-
- cpu_x86_load_seg(env, R_DS, __USER_DS);
- cpu_x86_load_seg(env, R_ES, __USER_DS);
- cpu_x86_load_seg(env, R_SS, __USER_DS);
- cpu_x86_load_seg(env, R_CS, __USER_CS);
- env->eflags &= ~TF_MASK;
-
- unlock_user_struct(frame, frame_addr, 1);
-
- return;
-
-give_sigsegv:
- force_sigsegv(sig);
-}
-#endif
-
-/* compare linux/arch/x86/kernel/signal.c:setup_rt_frame() */
-static void setup_rt_frame(int sig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPUX86State *env)
-{
- abi_ulong frame_addr;
-#ifndef TARGET_X86_64
- abi_ulong addr;
-#endif
- struct rt_sigframe *frame;
- int i;
-
- frame_addr = get_sigframe(ka, env, sizeof(*frame));
- trace_user_setup_rt_frame(env, frame_addr);
-
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
- goto give_sigsegv;
-
- /* These fields are only in rt_sigframe on 32 bit */
-#ifndef TARGET_X86_64
- __put_user(sig, &frame->sig);
- addr = frame_addr + offsetof(struct rt_sigframe, info);
- __put_user(addr, &frame->pinfo);
- addr = frame_addr + offsetof(struct rt_sigframe, uc);
- __put_user(addr, &frame->puc);
-#endif
- if (ka->sa_flags & TARGET_SA_SIGINFO) {
- tswap_siginfo(&frame->info, info);
- }
-
- /* Create the ucontext. */
- __put_user(0, &frame->uc.tuc_flags);
- __put_user(0, &frame->uc.tuc_link);
- __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
- __put_user(sas_ss_flags(get_sp_from_cpustate(env)),
- &frame->uc.tuc_stack.ss_flags);
- __put_user(target_sigaltstack_used.ss_size,
- &frame->uc.tuc_stack.ss_size);
- setup_sigcontext(&frame->uc.tuc_mcontext, &frame->fpstate, env,
- set->sig[0], frame_addr + offsetof(struct rt_sigframe, fpstate));
-
- for(i = 0; i < TARGET_NSIG_WORDS; i++) {
- __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
- }
-
- /* Set up to return from userspace. If provided, use a stub
- already in userspace. */
-#ifndef TARGET_X86_64
- if (ka->sa_flags & TARGET_SA_RESTORER) {
- __put_user(ka->sa_restorer, &frame->pretcode);
- } else {
- uint16_t val16;
- addr = frame_addr + offsetof(struct rt_sigframe, retcode);
- __put_user(addr, &frame->pretcode);
- /* This is movl $,%eax ; int $0x80 */
- __put_user(0xb8, (char *)(frame->retcode+0));
- __put_user(TARGET_NR_rt_sigreturn, (int *)(frame->retcode+1));
- val16 = 0x80cd;
- __put_user(val16, (uint16_t *)(frame->retcode+5));
- }
-#else
- /* XXX: Would be slightly better to return -EFAULT here if test fails
- assert(ka->sa_flags & TARGET_SA_RESTORER); */
- __put_user(ka->sa_restorer, &frame->pretcode);
-#endif
-
- /* Set up registers for signal handler */
- env->regs[R_ESP] = frame_addr;
- env->eip = ka->_sa_handler;
-
-#ifndef TARGET_X86_64
- env->regs[R_EAX] = sig;
- env->regs[R_EDX] = (unsigned long)&frame->info;
- env->regs[R_ECX] = (unsigned long)&frame->uc;
-#else
- env->regs[R_EAX] = 0;
- env->regs[R_EDI] = sig;
- env->regs[R_ESI] = (unsigned long)&frame->info;
- env->regs[R_EDX] = (unsigned long)&frame->uc;
-#endif
-
- cpu_x86_load_seg(env, R_DS, __USER_DS);
- cpu_x86_load_seg(env, R_ES, __USER_DS);
- cpu_x86_load_seg(env, R_CS, __USER_CS);
- cpu_x86_load_seg(env, R_SS, __USER_DS);
- env->eflags &= ~TF_MASK;
-
- unlock_user_struct(frame, frame_addr, 1);
-
- return;
-
-give_sigsegv:
- force_sigsegv(sig);
-}
-
-static int
-restore_sigcontext(CPUX86State *env, struct target_sigcontext *sc)
-{
- unsigned int err = 0;
- abi_ulong fpstate_addr;
- unsigned int tmpflags;
-
-#ifndef TARGET_X86_64
- cpu_x86_load_seg(env, R_GS, tswap16(sc->gs));
- cpu_x86_load_seg(env, R_FS, tswap16(sc->fs));
- cpu_x86_load_seg(env, R_ES, tswap16(sc->es));
- cpu_x86_load_seg(env, R_DS, tswap16(sc->ds));
-
- env->regs[R_EDI] = tswapl(sc->edi);
- env->regs[R_ESI] = tswapl(sc->esi);
- env->regs[R_EBP] = tswapl(sc->ebp);
- env->regs[R_ESP] = tswapl(sc->esp);
- env->regs[R_EBX] = tswapl(sc->ebx);
- env->regs[R_EDX] = tswapl(sc->edx);
- env->regs[R_ECX] = tswapl(sc->ecx);
- env->regs[R_EAX] = tswapl(sc->eax);
-
- env->eip = tswapl(sc->eip);
-#else
- env->regs[8] = tswapl(sc->r8);
- env->regs[9] = tswapl(sc->r9);
- env->regs[10] = tswapl(sc->r10);
- env->regs[11] = tswapl(sc->r11);
- env->regs[12] = tswapl(sc->r12);
- env->regs[13] = tswapl(sc->r13);
- env->regs[14] = tswapl(sc->r14);
- env->regs[15] = tswapl(sc->r15);
-
- env->regs[R_EDI] = tswapl(sc->rdi);
- env->regs[R_ESI] = tswapl(sc->rsi);
- env->regs[R_EBP] = tswapl(sc->rbp);
- env->regs[R_EBX] = tswapl(sc->rbx);
- env->regs[R_EDX] = tswapl(sc->rdx);
- env->regs[R_EAX] = tswapl(sc->rax);
- env->regs[R_ECX] = tswapl(sc->rcx);
- env->regs[R_ESP] = tswapl(sc->rsp);
-
- env->eip = tswapl(sc->rip);
-#endif
-
- cpu_x86_load_seg(env, R_CS, lduw_p(&sc->cs) | 3);
- cpu_x86_load_seg(env, R_SS, lduw_p(&sc->ss) | 3);
-
- tmpflags = tswapl(sc->eflags);
- env->eflags = (env->eflags & ~0x40DD5) | (tmpflags & 0x40DD5);
- // regs->orig_eax = -1; /* disable syscall checks */
-
- fpstate_addr = tswapl(sc->fpstate);
- if (fpstate_addr != 0) {
- if (!access_ok(VERIFY_READ, fpstate_addr,
- sizeof(struct target_fpstate)))
- goto badframe;
-#ifndef TARGET_X86_64
- cpu_x86_frstor(env, fpstate_addr, 1);
-#else
- cpu_x86_fxrstor(env, fpstate_addr);
-#endif
- }
-
- return err;
-badframe:
- return 1;
-}
-
-/* Note: there is no sigreturn on x86_64, there is only rt_sigreturn */
-#ifndef TARGET_X86_64
-long do_sigreturn(CPUX86State *env)
-{
- struct sigframe *frame;
- abi_ulong frame_addr = env->regs[R_ESP] - 8;
- target_sigset_t target_set;
- sigset_t set;
- int i;
-
- trace_user_do_sigreturn(env, frame_addr);
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
- goto badframe;
- /* set blocked signals */
- __get_user(target_set.sig[0], &frame->sc.oldmask);
- for(i = 1; i < TARGET_NSIG_WORDS; i++) {
- __get_user(target_set.sig[i], &frame->extramask[i - 1]);
- }
-
- target_to_host_sigset_internal(&set, &target_set);
- set_sigmask(&set);
-
- /* restore registers */
- if (restore_sigcontext(env, &frame->sc))
- goto badframe;
- unlock_user_struct(frame, frame_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-
-badframe:
- unlock_user_struct(frame, frame_addr, 0);
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-#endif
-
-long do_rt_sigreturn(CPUX86State *env)
-{
- abi_ulong frame_addr;
- struct rt_sigframe *frame;
- sigset_t set;
-
- frame_addr = env->regs[R_ESP] - sizeof(abi_ulong);
- trace_user_do_rt_sigreturn(env, frame_addr);
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
- goto badframe;
- target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
- set_sigmask(&set);
-
- if (restore_sigcontext(env, &frame->uc.tuc_mcontext)) {
- goto badframe;
- }
-
- if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe,
uc.tuc_stack), 0,
- get_sp_from_cpustate(env)) == -EFAULT) {
- goto badframe;
- }
-
- unlock_user_struct(frame, frame_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-
-badframe:
- unlock_user_struct(frame, frame_addr, 0);
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-
-#elif defined(TARGET_AARCH64)
-
-struct target_sigcontext {
- uint64_t fault_address;
- /* AArch64 registers */
- uint64_t regs[31];
- uint64_t sp;
- uint64_t pc;
- uint64_t pstate;
- /* 4K reserved for FP/SIMD state and future expansion */
- char __reserved[4096] __attribute__((__aligned__(16)));
-};
-
-struct target_ucontext {
- abi_ulong tuc_flags;
- abi_ulong tuc_link;
- target_stack_t tuc_stack;
- target_sigset_t tuc_sigmask;
- /* glibc uses a 1024-bit sigset_t */
- char __unused[1024 / 8 - sizeof(target_sigset_t)];
- /* last for future expansion */
- struct target_sigcontext tuc_mcontext;
-};
-
-/*
- * Header to be used at the beginning of structures extending the user
- * context. Such structures must be placed after the rt_sigframe on the stack
- * and be 16-byte aligned. The last structure must be a dummy one with the
- * magic and size set to 0.
- */
-struct target_aarch64_ctx {
- uint32_t magic;
- uint32_t size;
-};
-
-#define TARGET_FPSIMD_MAGIC 0x46508001
-
-struct target_fpsimd_context {
- struct target_aarch64_ctx head;
- uint32_t fpsr;
- uint32_t fpcr;
- uint64_t vregs[32 * 2]; /* really uint128_t vregs[32] */
-};
-
-#define TARGET_EXTRA_MAGIC 0x45585401
-
-struct target_extra_context {
- struct target_aarch64_ctx head;
- uint64_t datap; /* 16-byte aligned pointer to extra space cast to __u64 */
- uint32_t size; /* size in bytes of the extra space */
- uint32_t reserved[3];
-};
-
-#define TARGET_SVE_MAGIC 0x53564501
-
-struct target_sve_context {
- struct target_aarch64_ctx head;
- uint16_t vl;
- uint16_t reserved[3];
- /* The actual SVE data immediately follows. It is layed out
- * according to TARGET_SVE_SIG_{Z,P}REG_OFFSET, based off of
- * the original struct pointer.
- */
-};
-
-#define TARGET_SVE_VQ_BYTES 16
-
-#define TARGET_SVE_SIG_ZREG_SIZE(VQ) ((VQ) * TARGET_SVE_VQ_BYTES)
-#define TARGET_SVE_SIG_PREG_SIZE(VQ) ((VQ) * (TARGET_SVE_VQ_BYTES / 8))
-
-#define TARGET_SVE_SIG_REGS_OFFSET \
- QEMU_ALIGN_UP(sizeof(struct target_sve_context), TARGET_SVE_VQ_BYTES)
-#define TARGET_SVE_SIG_ZREG_OFFSET(VQ, N) \
- (TARGET_SVE_SIG_REGS_OFFSET + TARGET_SVE_SIG_ZREG_SIZE(VQ) * (N))
-#define TARGET_SVE_SIG_PREG_OFFSET(VQ, N) \
- (TARGET_SVE_SIG_ZREG_OFFSET(VQ, 32) + TARGET_SVE_SIG_PREG_SIZE(VQ) * (N))
-#define TARGET_SVE_SIG_FFR_OFFSET(VQ) \
- (TARGET_SVE_SIG_PREG_OFFSET(VQ, 16))
-#define TARGET_SVE_SIG_CONTEXT_SIZE(VQ) \
- (TARGET_SVE_SIG_PREG_OFFSET(VQ, 17))
-
-struct target_rt_sigframe {
- struct target_siginfo info;
- struct target_ucontext uc;
-};
-
-struct target_rt_frame_record {
- uint64_t fp;
- uint64_t lr;
- uint32_t tramp[2];
-};
-
-static void target_setup_general_frame(struct target_rt_sigframe *sf,
- CPUARMState *env, target_sigset_t *set)
-{
- int i;
-
- __put_user(0, &sf->uc.tuc_flags);
- __put_user(0, &sf->uc.tuc_link);
-
- __put_user(target_sigaltstack_used.ss_sp, &sf->uc.tuc_stack.ss_sp);
- __put_user(sas_ss_flags(env->xregs[31]), &sf->uc.tuc_stack.ss_flags);
- __put_user(target_sigaltstack_used.ss_size, &sf->uc.tuc_stack.ss_size);
-
- for (i = 0; i < 31; i++) {
- __put_user(env->xregs[i], &sf->uc.tuc_mcontext.regs[i]);
- }
- __put_user(env->xregs[31], &sf->uc.tuc_mcontext.sp);
- __put_user(env->pc, &sf->uc.tuc_mcontext.pc);
- __put_user(pstate_read(env), &sf->uc.tuc_mcontext.pstate);
-
- __put_user(env->exception.vaddress, &sf->uc.tuc_mcontext.fault_address);
-
- for (i = 0; i < TARGET_NSIG_WORDS; i++) {
- __put_user(set->sig[i], &sf->uc.tuc_sigmask.sig[i]);
- }
-}
-
-static void target_setup_fpsimd_record(struct target_fpsimd_context *fpsimd,
- CPUARMState *env)
-{
- int i;
-
- __put_user(TARGET_FPSIMD_MAGIC, &fpsimd->head.magic);
- __put_user(sizeof(struct target_fpsimd_context), &fpsimd->head.size);
- __put_user(vfp_get_fpsr(env), &fpsimd->fpsr);
- __put_user(vfp_get_fpcr(env), &fpsimd->fpcr);
-
- for (i = 0; i < 32; i++) {
- uint64_t *q = aa64_vfp_qreg(env, i);
-#ifdef TARGET_WORDS_BIGENDIAN
- __put_user(q[0], &fpsimd->vregs[i * 2 + 1]);
- __put_user(q[1], &fpsimd->vregs[i * 2]);
-#else
- __put_user(q[0], &fpsimd->vregs[i * 2]);
- __put_user(q[1], &fpsimd->vregs[i * 2 + 1]);
-#endif
- }
-}
-
-static void target_setup_extra_record(struct target_extra_context *extra,
- uint64_t datap, uint32_t extra_size)
-{
- __put_user(TARGET_EXTRA_MAGIC, &extra->head.magic);
- __put_user(sizeof(struct target_extra_context), &extra->head.size);
- __put_user(datap, &extra->datap);
- __put_user(extra_size, &extra->size);
-}
-
-static void target_setup_end_record(struct target_aarch64_ctx *end)
-{
- __put_user(0, &end->magic);
- __put_user(0, &end->size);
-}
-
-static void target_setup_sve_record(struct target_sve_context *sve,
- CPUARMState *env, int vq, int size)
-{
- int i, j;
-
- __put_user(TARGET_SVE_MAGIC, &sve->head.magic);
- __put_user(size, &sve->head.size);
- __put_user(vq * TARGET_SVE_VQ_BYTES, &sve->vl);
-
- /* Note that SVE regs are stored as a byte stream, with each byte element
- * at a subsequent address. This corresponds to a little-endian store
- * of our 64-bit hunks.
- */
- for (i = 0; i < 32; ++i) {
- uint64_t *z = (void *)sve + TARGET_SVE_SIG_ZREG_OFFSET(vq, i);
- for (j = 0; j < vq * 2; ++j) {
- __put_user_e(env->vfp.zregs[i].d[j], z + j, le);
- }
- }
- for (i = 0; i <= 16; ++i) {
- uint16_t *p = (void *)sve + TARGET_SVE_SIG_PREG_OFFSET(vq, i);
- for (j = 0; j < vq; ++j) {
- uint64_t r = env->vfp.pregs[i].p[j >> 2];
- __put_user_e(r >> ((j & 3) * 16), p + j, le);
- }
- }
-}
-
-static void target_restore_general_frame(CPUARMState *env,
- struct target_rt_sigframe *sf)
-{
- sigset_t set;
- uint64_t pstate;
- int i;
-
- target_to_host_sigset(&set, &sf->uc.tuc_sigmask);
- set_sigmask(&set);
-
- for (i = 0; i < 31; i++) {
- __get_user(env->xregs[i], &sf->uc.tuc_mcontext.regs[i]);
- }
-
- __get_user(env->xregs[31], &sf->uc.tuc_mcontext.sp);
- __get_user(env->pc, &sf->uc.tuc_mcontext.pc);
- __get_user(pstate, &sf->uc.tuc_mcontext.pstate);
- pstate_write(env, pstate);
-}
-
-static void target_restore_fpsimd_record(CPUARMState *env,
- struct target_fpsimd_context *fpsimd)
-{
- uint32_t fpsr, fpcr;
- int i;
-
- __get_user(fpsr, &fpsimd->fpsr);
- vfp_set_fpsr(env, fpsr);
- __get_user(fpcr, &fpsimd->fpcr);
- vfp_set_fpcr(env, fpcr);
-
- for (i = 0; i < 32; i++) {
- uint64_t *q = aa64_vfp_qreg(env, i);
-#ifdef TARGET_WORDS_BIGENDIAN
- __get_user(q[0], &fpsimd->vregs[i * 2 + 1]);
- __get_user(q[1], &fpsimd->vregs[i * 2]);
-#else
- __get_user(q[0], &fpsimd->vregs[i * 2]);
- __get_user(q[1], &fpsimd->vregs[i * 2 + 1]);
-#endif
- }
-}
-
-static void target_restore_sve_record(CPUARMState *env,
- struct target_sve_context *sve, int vq)
-{
- int i, j;
-
- /* Note that SVE regs are stored as a byte stream, with each byte element
- * at a subsequent address. This corresponds to a little-endian load
- * of our 64-bit hunks.
- */
- for (i = 0; i < 32; ++i) {
- uint64_t *z = (void *)sve + TARGET_SVE_SIG_ZREG_OFFSET(vq, i);
- for (j = 0; j < vq * 2; ++j) {
- __get_user_e(env->vfp.zregs[i].d[j], z + j, le);
- }
- }
- for (i = 0; i <= 16; ++i) {
- uint16_t *p = (void *)sve + TARGET_SVE_SIG_PREG_OFFSET(vq, i);
- for (j = 0; j < vq; ++j) {
- uint16_t r;
- __get_user_e(r, p + j, le);
- if (j & 3) {
- env->vfp.pregs[i].p[j >> 2] |= (uint64_t)r << ((j & 3) * 16);
- } else {
- env->vfp.pregs[i].p[j >> 2] = r;
- }
- }
- }
-}
-
-static int target_restore_sigframe(CPUARMState *env,
- struct target_rt_sigframe *sf)
-{
- struct target_aarch64_ctx *ctx, *extra = NULL;
- struct target_fpsimd_context *fpsimd = NULL;
- struct target_sve_context *sve = NULL;
- uint64_t extra_datap = 0;
- bool used_extra = false;
- bool err = false;
- int vq = 0, sve_size = 0;
-
- target_restore_general_frame(env, sf);
-
- ctx = (struct target_aarch64_ctx *)sf->uc.tuc_mcontext.__reserved;
- while (ctx) {
- uint32_t magic, size, extra_size;
-
- __get_user(magic, &ctx->magic);
- __get_user(size, &ctx->size);
- switch (magic) {
- case 0:
- if (size != 0) {
- err = true;
- goto exit;
- }
- if (used_extra) {
- ctx = NULL;
- } else {
- ctx = extra;
- used_extra = true;
- }
- continue;
-
- case TARGET_FPSIMD_MAGIC:
- if (fpsimd || size != sizeof(struct target_fpsimd_context)) {
- err = true;
- goto exit;
- }
- fpsimd = (struct target_fpsimd_context *)ctx;
- break;
-
- case TARGET_SVE_MAGIC:
- if (arm_feature(env, ARM_FEATURE_SVE)) {
- vq = (env->vfp.zcr_el[1] & 0xf) + 1;
- sve_size = QEMU_ALIGN_UP(TARGET_SVE_SIG_CONTEXT_SIZE(vq), 16);
- if (!sve && size == sve_size) {
- sve = (struct target_sve_context *)ctx;
- break;
- }
- }
- err = true;
- goto exit;
-
- case TARGET_EXTRA_MAGIC:
- if (extra || size != sizeof(struct target_extra_context)) {
- err = true;
- goto exit;
- }
- __get_user(extra_datap,
- &((struct target_extra_context *)ctx)->datap);
- __get_user(extra_size,
- &((struct target_extra_context *)ctx)->size);
- extra = lock_user(VERIFY_READ, extra_datap, extra_size, 0);
- break;
-
- default:
- /* Unknown record -- we certainly didn't generate it.
- * Did we in fact get out of sync?
- */
- err = true;
- goto exit;
- }
- ctx = (void *)ctx + size;
- }
-
- /* Require FPSIMD always. */
- if (fpsimd) {
- target_restore_fpsimd_record(env, fpsimd);
- } else {
- err = true;
- }
-
- /* SVE data, if present, overwrites FPSIMD data. */
- if (sve) {
- target_restore_sve_record(env, sve, vq);
- }
-
- exit:
- unlock_user(extra, extra_datap, 0);
- return err;
-}
-
-static abi_ulong get_sigframe(struct target_sigaction *ka,
- CPUARMState *env, int size)
-{
- abi_ulong sp;
-
- sp = env->xregs[31];
-
- /*
- * This is the X/Open sanctioned signal stack switching.
- */
- if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp)) {
- sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
- }
-
- sp = (sp - size) & ~15;
-
- return sp;
-}
-
-typedef struct {
- int total_size;
- int extra_base;
- int extra_size;
- int std_end_ofs;
- int extra_ofs;
- int extra_end_ofs;
-} target_sigframe_layout;
-
-static int alloc_sigframe_space(int this_size, target_sigframe_layout *l)
-{
- /* Make sure there will always be space for the end marker. */
- const int std_size = sizeof(struct target_rt_sigframe)
- - sizeof(struct target_aarch64_ctx);
- int this_loc = l->total_size;
-
- if (l->extra_base) {
- /* Once we have begun an extra space, all allocations go there. */
- l->extra_size += this_size;
- } else if (this_size + this_loc > std_size) {
- /* This allocation does not fit in the standard space. */
- /* Allocate the extra record. */
- l->extra_ofs = this_loc;
- l->total_size += sizeof(struct target_extra_context);
-
- /* Allocate the standard end record. */
- l->std_end_ofs = l->total_size;
- l->total_size += sizeof(struct target_aarch64_ctx);
-
- /* Allocate the requested record. */
- l->extra_base = this_loc = l->total_size;
- l->extra_size = this_size;
- }
- l->total_size += this_size;
-
- return this_loc;
-}
-
-static void target_setup_frame(int usig, struct target_sigaction *ka,
- target_siginfo_t *info, target_sigset_t *set,
- CPUARMState *env)
-{
- target_sigframe_layout layout = {
- /* Begin with the size pointing to the reserved space. */
- .total_size = offsetof(struct target_rt_sigframe,
- uc.tuc_mcontext.__reserved),
- };
- int fpsimd_ofs, fr_ofs, sve_ofs = 0, vq = 0, sve_size = 0;
- struct target_rt_sigframe *frame;
- struct target_rt_frame_record *fr;
- abi_ulong frame_addr, return_addr;
-
- /* FPSIMD record is always in the standard space. */
- fpsimd_ofs = alloc_sigframe_space(sizeof(struct target_fpsimd_context),
- &layout);
-
- /* SVE state needs saving only if it exists. */
- if (arm_feature(env, ARM_FEATURE_SVE)) {
- vq = (env->vfp.zcr_el[1] & 0xf) + 1;
- sve_size = QEMU_ALIGN_UP(TARGET_SVE_SIG_CONTEXT_SIZE(vq), 16);
- sve_ofs = alloc_sigframe_space(sve_size, &layout);
- }
-
- if (layout.extra_ofs) {
- /* Reserve space for the extra end marker. The standard end marker
- * will have been allocated when we allocated the extra record.
- */
- layout.extra_end_ofs
- = alloc_sigframe_space(sizeof(struct target_aarch64_ctx), &layout);
- } else {
- /* Reserve space for the standard end marker.
- * Do not use alloc_sigframe_space because we cheat
- * std_size therein to reserve space for this.
- */
- layout.std_end_ofs = layout.total_size;
- layout.total_size += sizeof(struct target_aarch64_ctx);
- }
-
- /* Reserve space for the return code. On a real system this would
- * be within the VDSO. So, despite the name this is not a "real"
- * record within the frame.
- */
- fr_ofs = layout.total_size;
- layout.total_size += sizeof(struct target_rt_frame_record);
-
- frame_addr = get_sigframe(ka, env, layout.total_size);
- trace_user_setup_frame(env, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
- goto give_sigsegv;
- }
-
- target_setup_general_frame(frame, env, set);
- target_setup_fpsimd_record((void *)frame + fpsimd_ofs, env);
- target_setup_end_record((void *)frame + layout.std_end_ofs);
- if (layout.extra_ofs) {
- target_setup_extra_record((void *)frame + layout.extra_ofs,
- frame_addr + layout.extra_base,
- layout.extra_size);
- target_setup_end_record((void *)frame + layout.extra_end_ofs);
- }
- if (sve_ofs) {
- target_setup_sve_record((void *)frame + sve_ofs, env, vq, sve_size);
- }
-
- /* Set up the stack frame for unwinding. */
- fr = (void *)frame + fr_ofs;
- __put_user(env->xregs[29], &fr->fp);
- __put_user(env->xregs[30], &fr->lr);
-
- if (ka->sa_flags & TARGET_SA_RESTORER) {
- return_addr = ka->sa_restorer;
- } else {
- /*
- * mov x8,#__NR_rt_sigreturn; svc #0
- * Since these are instructions they need to be put as little-endian
- * regardless of target default or current CPU endianness.
- */
- __put_user_e(0xd2801168, &fr->tramp[0], le);
- __put_user_e(0xd4000001, &fr->tramp[1], le);
- return_addr = frame_addr + fr_ofs
- + offsetof(struct target_rt_frame_record, tramp);
- }
- env->xregs[0] = usig;
- env->xregs[31] = frame_addr;
- env->xregs[29] = frame_addr + fr_ofs;
- env->pc = ka->_sa_handler;
- env->xregs[30] = return_addr;
- if (info) {
- tswap_siginfo(&frame->info, info);
- env->xregs[1] = frame_addr + offsetof(struct target_rt_sigframe, info);
- env->xregs[2] = frame_addr + offsetof(struct target_rt_sigframe, uc);
- }
-
- unlock_user_struct(frame, frame_addr, 1);
- return;
-
- give_sigsegv:
- unlock_user_struct(frame, frame_addr, 1);
- force_sigsegv(usig);
-}
-
-static void setup_rt_frame(int sig, struct target_sigaction *ka,
- target_siginfo_t *info, target_sigset_t *set,
- CPUARMState *env)
-{
- target_setup_frame(sig, ka, info, set, env);
-}
-
-static void setup_frame(int sig, struct target_sigaction *ka,
- target_sigset_t *set, CPUARMState *env)
-{
- target_setup_frame(sig, ka, 0, set, env);
-}
-
-long do_rt_sigreturn(CPUARMState *env)
-{
- struct target_rt_sigframe *frame = NULL;
- abi_ulong frame_addr = env->xregs[31];
-
- trace_user_do_rt_sigreturn(env, frame_addr);
- if (frame_addr & 15) {
- goto badframe;
- }
-
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
- goto badframe;
- }
-
- if (target_restore_sigframe(env, frame)) {
- goto badframe;
- }
-
- if (do_sigaltstack(frame_addr +
- offsetof(struct target_rt_sigframe, uc.tuc_stack),
- 0, get_sp_from_cpustate(env)) == -EFAULT) {
- goto badframe;
- }
-
- unlock_user_struct(frame, frame_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-
- badframe:
- unlock_user_struct(frame, frame_addr, 0);
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-
-long do_sigreturn(CPUARMState *env)
-{
- return do_rt_sigreturn(env);
-}
-
-#elif defined(TARGET_ARM)
-
-struct target_sigcontext {
- abi_ulong trap_no;
- abi_ulong error_code;
- abi_ulong oldmask;
- abi_ulong arm_r0;
- abi_ulong arm_r1;
- abi_ulong arm_r2;
- abi_ulong arm_r3;
- abi_ulong arm_r4;
- abi_ulong arm_r5;
- abi_ulong arm_r6;
- abi_ulong arm_r7;
- abi_ulong arm_r8;
- abi_ulong arm_r9;
- abi_ulong arm_r10;
- abi_ulong arm_fp;
- abi_ulong arm_ip;
- abi_ulong arm_sp;
- abi_ulong arm_lr;
- abi_ulong arm_pc;
- abi_ulong arm_cpsr;
- abi_ulong fault_address;
-};
-
-struct target_ucontext_v1 {
- abi_ulong tuc_flags;
- abi_ulong tuc_link;
- target_stack_t tuc_stack;
- struct target_sigcontext tuc_mcontext;
- target_sigset_t tuc_sigmask; /* mask last for extensibility */
-};
-
-struct target_ucontext_v2 {
- abi_ulong tuc_flags;
- abi_ulong tuc_link;
- target_stack_t tuc_stack;
- struct target_sigcontext tuc_mcontext;
- target_sigset_t tuc_sigmask; /* mask last for extensibility */
- char __unused[128 - sizeof(target_sigset_t)];
- abi_ulong tuc_regspace[128] __attribute__((__aligned__(8)));
-};
-
-struct target_user_vfp {
- uint64_t fpregs[32];
- abi_ulong fpscr;
-};
-
-struct target_user_vfp_exc {
- abi_ulong fpexc;
- abi_ulong fpinst;
- abi_ulong fpinst2;
-};
-
-struct target_vfp_sigframe {
- abi_ulong magic;
- abi_ulong size;
- struct target_user_vfp ufp;
- struct target_user_vfp_exc ufp_exc;
-} __attribute__((__aligned__(8)));
-
-struct target_iwmmxt_sigframe {
- abi_ulong magic;
- abi_ulong size;
- uint64_t regs[16];
- /* Note that not all the coprocessor control registers are stored here */
- uint32_t wcssf;
- uint32_t wcasf;
- uint32_t wcgr0;
- uint32_t wcgr1;
- uint32_t wcgr2;
- uint32_t wcgr3;
-} __attribute__((__aligned__(8)));
-
-#define TARGET_VFP_MAGIC 0x56465001
-#define TARGET_IWMMXT_MAGIC 0x12ef842a
-
-struct sigframe_v1
-{
- struct target_sigcontext sc;
- abi_ulong extramask[TARGET_NSIG_WORDS-1];
- abi_ulong retcode;
-};
-
-struct sigframe_v2
-{
- struct target_ucontext_v2 uc;
- abi_ulong retcode;
-};
-
-struct rt_sigframe_v1
-{
- abi_ulong pinfo;
- abi_ulong puc;
- struct target_siginfo info;
- struct target_ucontext_v1 uc;
- abi_ulong retcode;
-};
-
-struct rt_sigframe_v2
-{
- struct target_siginfo info;
- struct target_ucontext_v2 uc;
- abi_ulong retcode;
-};
-
-#define TARGET_CONFIG_CPU_32 1
-
-/*
- * For ARM syscalls, we encode the syscall number into the instruction.
- */
-#define SWI_SYS_SIGRETURN (0xef000000|(TARGET_NR_sigreturn +
ARM_SYSCALL_BASE))
-#define SWI_SYS_RT_SIGRETURN (0xef000000|(TARGET_NR_rt_sigreturn +
ARM_SYSCALL_BASE))
-
-/*
- * For Thumb syscalls, we pass the syscall number via r7. We therefore
- * need two 16-bit instructions.
- */
-#define SWI_THUMB_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_sigreturn))
-#define SWI_THUMB_RT_SIGRETURN (0xdf00 << 16 | 0x2700 |
(TARGET_NR_rt_sigreturn))
-
-static const abi_ulong retcodes[4] = {
- SWI_SYS_SIGRETURN, SWI_THUMB_SIGRETURN,
- SWI_SYS_RT_SIGRETURN, SWI_THUMB_RT_SIGRETURN
-};
-
-
-static inline int valid_user_regs(CPUARMState *regs)
-{
- return 1;
-}
-
-static void
-setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/
- CPUARMState *env, abi_ulong mask)
-{
- __put_user(env->regs[0], &sc->arm_r0);
- __put_user(env->regs[1], &sc->arm_r1);
- __put_user(env->regs[2], &sc->arm_r2);
- __put_user(env->regs[3], &sc->arm_r3);
- __put_user(env->regs[4], &sc->arm_r4);
- __put_user(env->regs[5], &sc->arm_r5);
- __put_user(env->regs[6], &sc->arm_r6);
- __put_user(env->regs[7], &sc->arm_r7);
- __put_user(env->regs[8], &sc->arm_r8);
- __put_user(env->regs[9], &sc->arm_r9);
- __put_user(env->regs[10], &sc->arm_r10);
- __put_user(env->regs[11], &sc->arm_fp);
- __put_user(env->regs[12], &sc->arm_ip);
- __put_user(env->regs[13], &sc->arm_sp);
- __put_user(env->regs[14], &sc->arm_lr);
- __put_user(env->regs[15], &sc->arm_pc);
-#ifdef TARGET_CONFIG_CPU_32
- __put_user(cpsr_read(env), &sc->arm_cpsr);
-#endif
-
- __put_user(/* current->thread.trap_no */ 0, &sc->trap_no);
- __put_user(/* current->thread.error_code */ 0, &sc->error_code);
- __put_user(/* current->thread.address */ 0, &sc->fault_address);
- __put_user(mask, &sc->oldmask);
-}
-
-static inline abi_ulong
-get_sigframe(struct target_sigaction *ka, CPUARMState *regs, int framesize)
-{
- unsigned long sp = regs->regs[13];
-
- /*
- * This is the X/Open sanctioned signal stack switching.
- */
- if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp)) {
- sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
- }
- /*
- * ATPCS B01 mandates 8-byte alignment
- */
- return (sp - framesize) & ~7;
-}
-
-static void
-setup_return(CPUARMState *env, struct target_sigaction *ka,
- abi_ulong *rc, abi_ulong frame_addr, int usig, abi_ulong rc_addr)
-{
- abi_ulong handler = ka->_sa_handler;
- abi_ulong retcode;
- int thumb = handler & 1;
- uint32_t cpsr = cpsr_read(env);
-
- cpsr &= ~CPSR_IT;
- if (thumb) {
- cpsr |= CPSR_T;
- } else {
- cpsr &= ~CPSR_T;
- }
-
- if (ka->sa_flags & TARGET_SA_RESTORER) {
- retcode = ka->sa_restorer;
- } else {
- unsigned int idx = thumb;
-
- if (ka->sa_flags & TARGET_SA_SIGINFO) {
- idx += 2;
- }
-
- __put_user(retcodes[idx], rc);
-
- retcode = rc_addr + thumb;
- }
-
- env->regs[0] = usig;
- env->regs[13] = frame_addr;
- env->regs[14] = retcode;
- env->regs[15] = handler & (thumb ? ~1 : ~3);
- cpsr_write(env, cpsr, CPSR_IT | CPSR_T, CPSRWriteByInstr);
-}
-
-static abi_ulong *setup_sigframe_v2_vfp(abi_ulong *regspace, CPUARMState *env)
-{
- int i;
- struct target_vfp_sigframe *vfpframe;
- vfpframe = (struct target_vfp_sigframe *)regspace;
- __put_user(TARGET_VFP_MAGIC, &vfpframe->magic);
- __put_user(sizeof(*vfpframe), &vfpframe->size);
- for (i = 0; i < 32; i++) {
- __put_user(*aa32_vfp_dreg(env, i), &vfpframe->ufp.fpregs[i]);
- }
- __put_user(vfp_get_fpscr(env), &vfpframe->ufp.fpscr);
- __put_user(env->vfp.xregs[ARM_VFP_FPEXC], &vfpframe->ufp_exc.fpexc);
- __put_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst);
- __put_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2);
- return (abi_ulong*)(vfpframe+1);
-}
-
-static abi_ulong *setup_sigframe_v2_iwmmxt(abi_ulong *regspace,
- CPUARMState *env)
-{
- int i;
- struct target_iwmmxt_sigframe *iwmmxtframe;
- iwmmxtframe = (struct target_iwmmxt_sigframe *)regspace;
- __put_user(TARGET_IWMMXT_MAGIC, &iwmmxtframe->magic);
- __put_user(sizeof(*iwmmxtframe), &iwmmxtframe->size);
- for (i = 0; i < 16; i++) {
- __put_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]);
- }
- __put_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf);
- __put_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf);
- __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0);
- __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1);
- __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2);
- __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3);
- return (abi_ulong*)(iwmmxtframe+1);
-}
-
-static void setup_sigframe_v2(struct target_ucontext_v2 *uc,
- target_sigset_t *set, CPUARMState *env)
-{
- struct target_sigaltstack stack;
- int i;
- abi_ulong *regspace;
-
- /* Clear all the bits of the ucontext we don't use. */
- memset(uc, 0, offsetof(struct target_ucontext_v2, tuc_mcontext));
-
- memset(&stack, 0, sizeof(stack));
- __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp);
- __put_user(target_sigaltstack_used.ss_size, &stack.ss_size);
- __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags);
- memcpy(&uc->tuc_stack, &stack, sizeof(stack));
-
- setup_sigcontext(&uc->tuc_mcontext, env, set->sig[0]);
- /* Save coprocessor signal frame. */
- regspace = uc->tuc_regspace;
- if (arm_feature(env, ARM_FEATURE_VFP)) {
- regspace = setup_sigframe_v2_vfp(regspace, env);
- }
- if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
- regspace = setup_sigframe_v2_iwmmxt(regspace, env);
- }
-
- /* Write terminating magic word */
- __put_user(0, regspace);
-
- for(i = 0; i < TARGET_NSIG_WORDS; i++) {
- __put_user(set->sig[i], &uc->tuc_sigmask.sig[i]);
- }
-}
-
-/* compare linux/arch/arm/kernel/signal.c:setup_frame() */
-static void setup_frame_v1(int usig, struct target_sigaction *ka,
- target_sigset_t *set, CPUARMState *regs)
-{
- struct sigframe_v1 *frame;
- abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame));
- int i;
-
- trace_user_setup_frame(regs, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
- goto sigsegv;
- }
-
- setup_sigcontext(&frame->sc, regs, set->sig[0]);
-
- for(i = 1; i < TARGET_NSIG_WORDS; i++) {
- __put_user(set->sig[i], &frame->extramask[i - 1]);
- }
-
- setup_return(regs, ka, &frame->retcode, frame_addr, usig,
- frame_addr + offsetof(struct sigframe_v1, retcode));
-
- unlock_user_struct(frame, frame_addr, 1);
- return;
-sigsegv:
- force_sigsegv(usig);
-}
-
-static void setup_frame_v2(int usig, struct target_sigaction *ka,
- target_sigset_t *set, CPUARMState *regs)
-{
- struct sigframe_v2 *frame;
- abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame));
-
- trace_user_setup_frame(regs, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
- goto sigsegv;
- }
-
- setup_sigframe_v2(&frame->uc, set, regs);
-
- setup_return(regs, ka, &frame->retcode, frame_addr, usig,
- frame_addr + offsetof(struct sigframe_v2, retcode));
-
- unlock_user_struct(frame, frame_addr, 1);
- return;
-sigsegv:
- force_sigsegv(usig);
-}
-
-static void setup_frame(int usig, struct target_sigaction *ka,
- target_sigset_t *set, CPUARMState *regs)
-{
- if (get_osversion() >= 0x020612) {
- setup_frame_v2(usig, ka, set, regs);
- } else {
- setup_frame_v1(usig, ka, set, regs);
- }
-}
-
-/* compare linux/arch/arm/kernel/signal.c:setup_rt_frame() */
-static void setup_rt_frame_v1(int usig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPUARMState *env)
-{
- struct rt_sigframe_v1 *frame;
- abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame));
- struct target_sigaltstack stack;
- int i;
- abi_ulong info_addr, uc_addr;
-
- trace_user_setup_rt_frame(env, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
- goto sigsegv;
- }
-
- info_addr = frame_addr + offsetof(struct rt_sigframe_v1, info);
- __put_user(info_addr, &frame->pinfo);
- uc_addr = frame_addr + offsetof(struct rt_sigframe_v1, uc);
- __put_user(uc_addr, &frame->puc);
- tswap_siginfo(&frame->info, info);
-
- /* Clear all the bits of the ucontext we don't use. */
- memset(&frame->uc, 0, offsetof(struct target_ucontext_v1, tuc_mcontext));
-
- memset(&stack, 0, sizeof(stack));
- __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp);
- __put_user(target_sigaltstack_used.ss_size, &stack.ss_size);
- __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags);
- memcpy(&frame->uc.tuc_stack, &stack, sizeof(stack));
-
- setup_sigcontext(&frame->uc.tuc_mcontext, env, set->sig[0]);
- for(i = 0; i < TARGET_NSIG_WORDS; i++) {
- __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
- }
-
- setup_return(env, ka, &frame->retcode, frame_addr, usig,
- frame_addr + offsetof(struct rt_sigframe_v1, retcode));
-
- env->regs[1] = info_addr;
- env->regs[2] = uc_addr;
-
- unlock_user_struct(frame, frame_addr, 1);
- return;
-sigsegv:
- force_sigsegv(usig);
-}
-
-static void setup_rt_frame_v2(int usig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPUARMState *env)
-{
- struct rt_sigframe_v2 *frame;
- abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame));
- abi_ulong info_addr, uc_addr;
-
- trace_user_setup_rt_frame(env, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
- goto sigsegv;
- }
-
- info_addr = frame_addr + offsetof(struct rt_sigframe_v2, info);
- uc_addr = frame_addr + offsetof(struct rt_sigframe_v2, uc);
- tswap_siginfo(&frame->info, info);
-
- setup_sigframe_v2(&frame->uc, set, env);
-
- setup_return(env, ka, &frame->retcode, frame_addr, usig,
- frame_addr + offsetof(struct rt_sigframe_v2, retcode));
-
- env->regs[1] = info_addr;
- env->regs[2] = uc_addr;
-
- unlock_user_struct(frame, frame_addr, 1);
- return;
-sigsegv:
- force_sigsegv(usig);
-}
-
-static void setup_rt_frame(int usig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPUARMState *env)
-{
- if (get_osversion() >= 0x020612) {
- setup_rt_frame_v2(usig, ka, info, set, env);
- } else {
- setup_rt_frame_v1(usig, ka, info, set, env);
- }
-}
-
-static int
-restore_sigcontext(CPUARMState *env, struct target_sigcontext *sc)
-{
- int err = 0;
- uint32_t cpsr;
-
- __get_user(env->regs[0], &sc->arm_r0);
- __get_user(env->regs[1], &sc->arm_r1);
- __get_user(env->regs[2], &sc->arm_r2);
- __get_user(env->regs[3], &sc->arm_r3);
- __get_user(env->regs[4], &sc->arm_r4);
- __get_user(env->regs[5], &sc->arm_r5);
- __get_user(env->regs[6], &sc->arm_r6);
- __get_user(env->regs[7], &sc->arm_r7);
- __get_user(env->regs[8], &sc->arm_r8);
- __get_user(env->regs[9], &sc->arm_r9);
- __get_user(env->regs[10], &sc->arm_r10);
- __get_user(env->regs[11], &sc->arm_fp);
- __get_user(env->regs[12], &sc->arm_ip);
- __get_user(env->regs[13], &sc->arm_sp);
- __get_user(env->regs[14], &sc->arm_lr);
- __get_user(env->regs[15], &sc->arm_pc);
-#ifdef TARGET_CONFIG_CPU_32
- __get_user(cpsr, &sc->arm_cpsr);
- cpsr_write(env, cpsr, CPSR_USER | CPSR_EXEC, CPSRWriteByInstr);
-#endif
-
- err |= !valid_user_regs(env);
-
- return err;
-}
-
-static long do_sigreturn_v1(CPUARMState *env)
-{
- abi_ulong frame_addr;
- struct sigframe_v1 *frame = NULL;
- target_sigset_t set;
- sigset_t host_set;
- int i;
-
- /*
- * Since we stacked the signal on a 64-bit boundary,
- * then 'sp' should be word aligned here. If it's
- * not, then the user is trying to mess with us.
- */
- frame_addr = env->regs[13];
- trace_user_do_sigreturn(env, frame_addr);
- if (frame_addr & 7) {
- goto badframe;
- }
-
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
- goto badframe;
- }
-
- __get_user(set.sig[0], &frame->sc.oldmask);
- for(i = 1; i < TARGET_NSIG_WORDS; i++) {
- __get_user(set.sig[i], &frame->extramask[i - 1]);
- }
-
- target_to_host_sigset_internal(&host_set, &set);
- set_sigmask(&host_set);
-
- if (restore_sigcontext(env, &frame->sc)) {
- goto badframe;
- }
-
-#if 0
- /* Send SIGTRAP if we're single-stepping */
- if (ptrace_cancel_bpt(current))
- send_sig(SIGTRAP, current, 1);
-#endif
- unlock_user_struct(frame, frame_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-
-badframe:
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-
-static abi_ulong *restore_sigframe_v2_vfp(CPUARMState *env, abi_ulong
*regspace)
-{
- int i;
- abi_ulong magic, sz;
- uint32_t fpscr, fpexc;
- struct target_vfp_sigframe *vfpframe;
- vfpframe = (struct target_vfp_sigframe *)regspace;
-
- __get_user(magic, &vfpframe->magic);
- __get_user(sz, &vfpframe->size);
- if (magic != TARGET_VFP_MAGIC || sz != sizeof(*vfpframe)) {
- return 0;
- }
- for (i = 0; i < 32; i++) {
- __get_user(*aa32_vfp_dreg(env, i), &vfpframe->ufp.fpregs[i]);
- }
- __get_user(fpscr, &vfpframe->ufp.fpscr);
- vfp_set_fpscr(env, fpscr);
- __get_user(fpexc, &vfpframe->ufp_exc.fpexc);
- /* Sanitise FPEXC: ensure VFP is enabled, FPINST2 is invalid
- * and the exception flag is cleared
- */
- fpexc |= (1 << 30);
- fpexc &= ~((1 << 31) | (1 << 28));
- env->vfp.xregs[ARM_VFP_FPEXC] = fpexc;
- __get_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst);
- __get_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2);
- return (abi_ulong*)(vfpframe + 1);
-}
-
-static abi_ulong *restore_sigframe_v2_iwmmxt(CPUARMState *env,
- abi_ulong *regspace)
-{
- int i;
- abi_ulong magic, sz;
- struct target_iwmmxt_sigframe *iwmmxtframe;
- iwmmxtframe = (struct target_iwmmxt_sigframe *)regspace;
-
- __get_user(magic, &iwmmxtframe->magic);
- __get_user(sz, &iwmmxtframe->size);
- if (magic != TARGET_IWMMXT_MAGIC || sz != sizeof(*iwmmxtframe)) {
- return 0;
- }
- for (i = 0; i < 16; i++) {
- __get_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]);
- }
- __get_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf);
- __get_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf);
- __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0);
- __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1);
- __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2);
- __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3);
- return (abi_ulong*)(iwmmxtframe + 1);
-}
-
-static int do_sigframe_return_v2(CPUARMState *env,
- target_ulong context_addr,
- struct target_ucontext_v2 *uc)
-{
- sigset_t host_set;
- abi_ulong *regspace;
-
- target_to_host_sigset(&host_set, &uc->tuc_sigmask);
- set_sigmask(&host_set);
-
- if (restore_sigcontext(env, &uc->tuc_mcontext))
- return 1;
-
- /* Restore coprocessor signal frame */
- regspace = uc->tuc_regspace;
- if (arm_feature(env, ARM_FEATURE_VFP)) {
- regspace = restore_sigframe_v2_vfp(env, regspace);
- if (!regspace) {
- return 1;
- }
- }
- if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
- regspace = restore_sigframe_v2_iwmmxt(env, regspace);
- if (!regspace) {
- return 1;
- }
- }
-
- if (do_sigaltstack(context_addr
- + offsetof(struct target_ucontext_v2, tuc_stack),
- 0, get_sp_from_cpustate(env)) == -EFAULT) {
- return 1;
- }
-
-#if 0
- /* Send SIGTRAP if we're single-stepping */
- if (ptrace_cancel_bpt(current))
- send_sig(SIGTRAP, current, 1);
-#endif
-
- return 0;
-}
-
-static long do_sigreturn_v2(CPUARMState *env)
-{
- abi_ulong frame_addr;
- struct sigframe_v2 *frame = NULL;
-
- /*
- * Since we stacked the signal on a 64-bit boundary,
- * then 'sp' should be word aligned here. If it's
- * not, then the user is trying to mess with us.
- */
- frame_addr = env->regs[13];
- trace_user_do_sigreturn(env, frame_addr);
- if (frame_addr & 7) {
- goto badframe;
- }
-
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
- goto badframe;
- }
-
- if (do_sigframe_return_v2(env,
- frame_addr
- + offsetof(struct sigframe_v2, uc),
- &frame->uc)) {
- goto badframe;
- }
-
- unlock_user_struct(frame, frame_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-
-badframe:
- unlock_user_struct(frame, frame_addr, 0);
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-
-long do_sigreturn(CPUARMState *env)
-{
- if (get_osversion() >= 0x020612) {
- return do_sigreturn_v2(env);
- } else {
- return do_sigreturn_v1(env);
- }
-}
-
-static long do_rt_sigreturn_v1(CPUARMState *env)
-{
- abi_ulong frame_addr;
- struct rt_sigframe_v1 *frame = NULL;
- sigset_t host_set;
-
- /*
- * Since we stacked the signal on a 64-bit boundary,
- * then 'sp' should be word aligned here. If it's
- * not, then the user is trying to mess with us.
- */
- frame_addr = env->regs[13];
- trace_user_do_rt_sigreturn(env, frame_addr);
- if (frame_addr & 7) {
- goto badframe;
- }
-
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
- goto badframe;
- }
-
- target_to_host_sigset(&host_set, &frame->uc.tuc_sigmask);
- set_sigmask(&host_set);
-
- if (restore_sigcontext(env, &frame->uc.tuc_mcontext)) {
- goto badframe;
- }
-
- if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe_v1,
uc.tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT)
- goto badframe;
-
-#if 0
- /* Send SIGTRAP if we're single-stepping */
- if (ptrace_cancel_bpt(current))
- send_sig(SIGTRAP, current, 1);
-#endif
- unlock_user_struct(frame, frame_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-
-badframe:
- unlock_user_struct(frame, frame_addr, 0);
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-
-static long do_rt_sigreturn_v2(CPUARMState *env)
-{
- abi_ulong frame_addr;
- struct rt_sigframe_v2 *frame = NULL;
-
- /*
- * Since we stacked the signal on a 64-bit boundary,
- * then 'sp' should be word aligned here. If it's
- * not, then the user is trying to mess with us.
- */
- frame_addr = env->regs[13];
- trace_user_do_rt_sigreturn(env, frame_addr);
- if (frame_addr & 7) {
- goto badframe;
- }
-
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
- goto badframe;
- }
-
- if (do_sigframe_return_v2(env,
- frame_addr
- + offsetof(struct rt_sigframe_v2, uc),
- &frame->uc)) {
- goto badframe;
- }
-
- unlock_user_struct(frame, frame_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-
-badframe:
- unlock_user_struct(frame, frame_addr, 0);
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-
-long do_rt_sigreturn(CPUARMState *env)
-{
- if (get_osversion() >= 0x020612) {
- return do_rt_sigreturn_v2(env);
- } else {
- return do_rt_sigreturn_v1(env);
- }
-}
-
-#elif defined(TARGET_SPARC)
-
-#define __SUNOS_MAXWIN 31
-
-/* This is what SunOS does, so shall I. */
-struct target_sigcontext {
- abi_ulong sigc_onstack; /* state to restore */
-
- abi_ulong sigc_mask; /* sigmask to restore */
- abi_ulong sigc_sp; /* stack pointer */
- abi_ulong sigc_pc; /* program counter */
- abi_ulong sigc_npc; /* next program counter */
- abi_ulong sigc_psr; /* for condition codes etc */
- abi_ulong sigc_g1; /* User uses these two registers */
- abi_ulong sigc_o0; /* within the trampoline code. */
-
- /* Now comes information regarding the users window set
- * at the time of the signal.
- */
- abi_ulong sigc_oswins; /* outstanding windows */
-
- /* stack ptrs for each regwin buf */
- char *sigc_spbuf[__SUNOS_MAXWIN];
-
- /* Windows to restore after signal */
- struct {
- abi_ulong locals[8];
- abi_ulong ins[8];
- } sigc_wbuf[__SUNOS_MAXWIN];
-};
-/* A Sparc stack frame */
-struct sparc_stackf {
- abi_ulong locals[8];
- abi_ulong ins[8];
- /* It's simpler to treat fp and callers_pc as elements of ins[]
- * since we never need to access them ourselves.
- */
- char *structptr;
- abi_ulong xargs[6];
- abi_ulong xxargs[1];
-};
-
-typedef struct {
- struct {
- abi_ulong psr;
- abi_ulong pc;
- abi_ulong npc;
- abi_ulong y;
- abi_ulong u_regs[16]; /* globals and ins */
- } si_regs;
- int si_mask;
-} __siginfo_t;
-
-typedef struct {
- abi_ulong si_float_regs[32];
- unsigned long si_fsr;
- unsigned long si_fpqdepth;
- struct {
- unsigned long *insn_addr;
- unsigned long insn;
- } si_fpqueue [16];
-} qemu_siginfo_fpu_t;
-
-
-struct target_signal_frame {
- struct sparc_stackf ss;
- __siginfo_t info;
- abi_ulong fpu_save;
- abi_ulong insns[2] __attribute__ ((aligned (8)));
- abi_ulong extramask[TARGET_NSIG_WORDS - 1];
- abi_ulong extra_size; /* Should be 0 */
- qemu_siginfo_fpu_t fpu_state;
-};
-struct target_rt_signal_frame {
- struct sparc_stackf ss;
- siginfo_t info;
- abi_ulong regs[20];
- sigset_t mask;
- abi_ulong fpu_save;
- unsigned int insns[2];
- stack_t stack;
- unsigned int extra_size; /* Should be 0 */
- qemu_siginfo_fpu_t fpu_state;
-};
-
-#define UREG_O0 16
-#define UREG_O6 22
-#define UREG_I0 0
-#define UREG_I1 1
-#define UREG_I2 2
-#define UREG_I3 3
-#define UREG_I4 4
-#define UREG_I5 5
-#define UREG_I6 6
-#define UREG_I7 7
-#define UREG_L0 8
-#define UREG_FP UREG_I6
-#define UREG_SP UREG_O6
-
-static inline abi_ulong get_sigframe(struct target_sigaction *sa,
- CPUSPARCState *env,
- unsigned long framesize)
-{
- abi_ulong sp;
-
- sp = env->regwptr[UREG_FP];
-
- /* This is the X/Open sanctioned signal stack switching. */
- if (sa->sa_flags & TARGET_SA_ONSTACK) {
- if (!on_sig_stack(sp)
- && !((target_sigaltstack_used.ss_sp +
target_sigaltstack_used.ss_size) & 7)) {
- sp = target_sigaltstack_used.ss_sp +
target_sigaltstack_used.ss_size;
- }
- }
- return sp - framesize;
-}
-
-static int
-setup___siginfo(__siginfo_t *si, CPUSPARCState *env, abi_ulong mask)
-{
- int err = 0, i;
-
- __put_user(env->psr, &si->si_regs.psr);
- __put_user(env->pc, &si->si_regs.pc);
- __put_user(env->npc, &si->si_regs.npc);
- __put_user(env->y, &si->si_regs.y);
- for (i=0; i < 8; i++) {
- __put_user(env->gregs[i], &si->si_regs.u_regs[i]);
- }
- for (i=0; i < 8; i++) {
- __put_user(env->regwptr[UREG_I0 + i], &si->si_regs.u_regs[i+8]);
- }
- __put_user(mask, &si->si_mask);
- return err;
-}
-
-#if 0
-static int
-setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/
- CPUSPARCState *env, unsigned long mask)
-{
- int err = 0;
-
- __put_user(mask, &sc->sigc_mask);
- __put_user(env->regwptr[UREG_SP], &sc->sigc_sp);
- __put_user(env->pc, &sc->sigc_pc);
- __put_user(env->npc, &sc->sigc_npc);
- __put_user(env->psr, &sc->sigc_psr);
- __put_user(env->gregs[1], &sc->sigc_g1);
- __put_user(env->regwptr[UREG_O0], &sc->sigc_o0);
-
- return err;
-}
-#endif
-#define NF_ALIGNEDSZ (((sizeof(struct target_signal_frame) + 7) & (~7)))
-
-static void setup_frame(int sig, struct target_sigaction *ka,
- target_sigset_t *set, CPUSPARCState *env)
-{
- abi_ulong sf_addr;
- struct target_signal_frame *sf;
- int sigframe_size, err, i;
-
- /* 1. Make sure everything is clean */
- //synchronize_user_stack();
-
- sigframe_size = NF_ALIGNEDSZ;
- sf_addr = get_sigframe(ka, env, sigframe_size);
- trace_user_setup_frame(env, sf_addr);
-
- sf = lock_user(VERIFY_WRITE, sf_addr,
- sizeof(struct target_signal_frame), 0);
- if (!sf) {
- goto sigsegv;
- }
-#if 0
- if (invalid_frame_pointer(sf, sigframe_size))
- goto sigill_and_return;
-#endif
- /* 2. Save the current process state */
- err = setup___siginfo(&sf->info, env, set->sig[0]);
- __put_user(0, &sf->extra_size);
-
- //save_fpu_state(regs, &sf->fpu_state);
- //__put_user(&sf->fpu_state, &sf->fpu_save);
-
- __put_user(set->sig[0], &sf->info.si_mask);
- for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) {
- __put_user(set->sig[i + 1], &sf->extramask[i]);
- }
-
- for (i = 0; i < 8; i++) {
- __put_user(env->regwptr[i + UREG_L0], &sf->ss.locals[i]);
- }
- for (i = 0; i < 8; i++) {
- __put_user(env->regwptr[i + UREG_I0], &sf->ss.ins[i]);
- }
- if (err)
- goto sigsegv;
-
- /* 3. signal handler back-trampoline and parameters */
- env->regwptr[UREG_FP] = sf_addr;
- env->regwptr[UREG_I0] = sig;
- env->regwptr[UREG_I1] = sf_addr +
- offsetof(struct target_signal_frame, info);
- env->regwptr[UREG_I2] = sf_addr +
- offsetof(struct target_signal_frame, info);
-
- /* 4. signal handler */
- env->pc = ka->_sa_handler;
- env->npc = (env->pc + 4);
- /* 5. return to kernel instructions */
- if (ka->sa_restorer) {
- env->regwptr[UREG_I7] = ka->sa_restorer;
- } else {
- uint32_t val32;
-
- env->regwptr[UREG_I7] = sf_addr +
- offsetof(struct target_signal_frame, insns) - 2 * 4;
-
- /* mov __NR_sigreturn, %g1 */
- val32 = 0x821020d8;
- __put_user(val32, &sf->insns[0]);
-
- /* t 0x10 */
- val32 = 0x91d02010;
- __put_user(val32, &sf->insns[1]);
- if (err)
- goto sigsegv;
-
- /* Flush instruction space. */
- // flush_sig_insns(current->mm, (unsigned long) &(sf->insns[0]));
- // tb_flush(env);
- }
- unlock_user(sf, sf_addr, sizeof(struct target_signal_frame));
- return;
-#if 0
-sigill_and_return:
- force_sig(TARGET_SIGILL);
-#endif
-sigsegv:
- unlock_user(sf, sf_addr, sizeof(struct target_signal_frame));
- force_sigsegv(sig);
-}
-
-static void setup_rt_frame(int sig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPUSPARCState *env)
-{
- fprintf(stderr, "setup_rt_frame: not implemented\n");
-}
-
-long do_sigreturn(CPUSPARCState *env)
-{
- abi_ulong sf_addr;
- struct target_signal_frame *sf;
- uint32_t up_psr, pc, npc;
- target_sigset_t set;
- sigset_t host_set;
- int err=0, i;
-
- sf_addr = env->regwptr[UREG_FP];
- trace_user_do_sigreturn(env, sf_addr);
- if (!lock_user_struct(VERIFY_READ, sf, sf_addr, 1)) {
- goto segv_and_exit;
- }
-
- /* 1. Make sure we are not getting garbage from the user */
-
- if (sf_addr & 3)
- goto segv_and_exit;
-
- __get_user(pc, &sf->info.si_regs.pc);
- __get_user(npc, &sf->info.si_regs.npc);
-
- if ((pc | npc) & 3) {
- goto segv_and_exit;
- }
-
- /* 2. Restore the state */
- __get_user(up_psr, &sf->info.si_regs.psr);
-
- /* User can only change condition codes and FPU enabling in %psr. */
- env->psr = (up_psr & (PSR_ICC /* | PSR_EF */))
- | (env->psr & ~(PSR_ICC /* | PSR_EF */));
-
- env->pc = pc;
- env->npc = npc;
- __get_user(env->y, &sf->info.si_regs.y);
- for (i=0; i < 8; i++) {
- __get_user(env->gregs[i], &sf->info.si_regs.u_regs[i]);
- }
- for (i=0; i < 8; i++) {
- __get_user(env->regwptr[i + UREG_I0], &sf->info.si_regs.u_regs[i+8]);
- }
-
- /* FIXME: implement FPU save/restore:
- * __get_user(fpu_save, &sf->fpu_save);
- * if (fpu_save)
- * err |= restore_fpu_state(env, fpu_save);
- */
-
- /* This is pretty much atomic, no amount locking would prevent
- * the races which exist anyways.
- */
- __get_user(set.sig[0], &sf->info.si_mask);
- for(i = 1; i < TARGET_NSIG_WORDS; i++) {
- __get_user(set.sig[i], &sf->extramask[i - 1]);
- }
-
- target_to_host_sigset_internal(&host_set, &set);
- set_sigmask(&host_set);
-
- if (err) {
- goto segv_and_exit;
- }
- unlock_user_struct(sf, sf_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-
-segv_and_exit:
- unlock_user_struct(sf, sf_addr, 0);
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-
-long do_rt_sigreturn(CPUSPARCState *env)
-{
- trace_user_do_rt_sigreturn(env, 0);
- fprintf(stderr, "do_rt_sigreturn: not implemented\n");
- return -TARGET_ENOSYS;
-}
-
-#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
-#define SPARC_MC_TSTATE 0
-#define SPARC_MC_PC 1
-#define SPARC_MC_NPC 2
-#define SPARC_MC_Y 3
-#define SPARC_MC_G1 4
-#define SPARC_MC_G2 5
-#define SPARC_MC_G3 6
-#define SPARC_MC_G4 7
-#define SPARC_MC_G5 8
-#define SPARC_MC_G6 9
-#define SPARC_MC_G7 10
-#define SPARC_MC_O0 11
-#define SPARC_MC_O1 12
-#define SPARC_MC_O2 13
-#define SPARC_MC_O3 14
-#define SPARC_MC_O4 15
-#define SPARC_MC_O5 16
-#define SPARC_MC_O6 17
-#define SPARC_MC_O7 18
-#define SPARC_MC_NGREG 19
-
-typedef abi_ulong target_mc_greg_t;
-typedef target_mc_greg_t target_mc_gregset_t[SPARC_MC_NGREG];
-
-struct target_mc_fq {
- abi_ulong *mcfq_addr;
- uint32_t mcfq_insn;
-};
-
-struct target_mc_fpu {
- union {
- uint32_t sregs[32];
- uint64_t dregs[32];
- //uint128_t qregs[16];
- } mcfpu_fregs;
- abi_ulong mcfpu_fsr;
- abi_ulong mcfpu_fprs;
- abi_ulong mcfpu_gsr;
- struct target_mc_fq *mcfpu_fq;
- unsigned char mcfpu_qcnt;
- unsigned char mcfpu_qentsz;
- unsigned char mcfpu_enab;
-};
-typedef struct target_mc_fpu target_mc_fpu_t;
-
-typedef struct {
- target_mc_gregset_t mc_gregs;
- target_mc_greg_t mc_fp;
- target_mc_greg_t mc_i7;
- target_mc_fpu_t mc_fpregs;
-} target_mcontext_t;
-
-struct target_ucontext {
- struct target_ucontext *tuc_link;
- abi_ulong tuc_flags;
- target_sigset_t tuc_sigmask;
- target_mcontext_t tuc_mcontext;
-};
-
-/* A V9 register window */
-struct target_reg_window {
- abi_ulong locals[8];
- abi_ulong ins[8];
-};
-
-#define TARGET_STACK_BIAS 2047
-
-/* {set, get}context() needed for 64-bit SparcLinux userland. */
-void sparc64_set_context(CPUSPARCState *env)
-{
- abi_ulong ucp_addr;
- struct target_ucontext *ucp;
- target_mc_gregset_t *grp;
- abi_ulong pc, npc, tstate;
- abi_ulong fp, i7, w_addr;
- unsigned int i;
-
- ucp_addr = env->regwptr[UREG_I0];
- if (!lock_user_struct(VERIFY_READ, ucp, ucp_addr, 1)) {
- goto do_sigsegv;
- }
- grp = &ucp->tuc_mcontext.mc_gregs;
- __get_user(pc, &((*grp)[SPARC_MC_PC]));
- __get_user(npc, &((*grp)[SPARC_MC_NPC]));
- if ((pc | npc) & 3) {
- goto do_sigsegv;
- }
- if (env->regwptr[UREG_I1]) {
- target_sigset_t target_set;
- sigset_t set;
-
- if (TARGET_NSIG_WORDS == 1) {
- __get_user(target_set.sig[0], &ucp->tuc_sigmask.sig[0]);
- } else {
- abi_ulong *src, *dst;
- src = ucp->tuc_sigmask.sig;
- dst = target_set.sig;
- for (i = 0; i < TARGET_NSIG_WORDS; i++, dst++, src++) {
- __get_user(*dst, src);
- }
- }
- target_to_host_sigset_internal(&set, &target_set);
- set_sigmask(&set);
- }
- env->pc = pc;
- env->npc = npc;
- __get_user(env->y, &((*grp)[SPARC_MC_Y]));
- __get_user(tstate, &((*grp)[SPARC_MC_TSTATE]));
- env->asi = (tstate >> 24) & 0xff;
- cpu_put_ccr(env, tstate >> 32);
- cpu_put_cwp64(env, tstate & 0x1f);
- __get_user(env->gregs[1], (&(*grp)[SPARC_MC_G1]));
- __get_user(env->gregs[2], (&(*grp)[SPARC_MC_G2]));
- __get_user(env->gregs[3], (&(*grp)[SPARC_MC_G3]));
- __get_user(env->gregs[4], (&(*grp)[SPARC_MC_G4]));
- __get_user(env->gregs[5], (&(*grp)[SPARC_MC_G5]));
- __get_user(env->gregs[6], (&(*grp)[SPARC_MC_G6]));
- __get_user(env->gregs[7], (&(*grp)[SPARC_MC_G7]));
- __get_user(env->regwptr[UREG_I0], (&(*grp)[SPARC_MC_O0]));
- __get_user(env->regwptr[UREG_I1], (&(*grp)[SPARC_MC_O1]));
- __get_user(env->regwptr[UREG_I2], (&(*grp)[SPARC_MC_O2]));
- __get_user(env->regwptr[UREG_I3], (&(*grp)[SPARC_MC_O3]));
- __get_user(env->regwptr[UREG_I4], (&(*grp)[SPARC_MC_O4]));
- __get_user(env->regwptr[UREG_I5], (&(*grp)[SPARC_MC_O5]));
- __get_user(env->regwptr[UREG_I6], (&(*grp)[SPARC_MC_O6]));
- __get_user(env->regwptr[UREG_I7], (&(*grp)[SPARC_MC_O7]));
-
- __get_user(fp, &(ucp->tuc_mcontext.mc_fp));
- __get_user(i7, &(ucp->tuc_mcontext.mc_i7));
-
- w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6];
- if (put_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]),
- abi_ulong) != 0) {
- goto do_sigsegv;
- }
- if (put_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]),
- abi_ulong) != 0) {
- goto do_sigsegv;
- }
- /* FIXME this does not match how the kernel handles the FPU in
- * its sparc64_set_context implementation. In particular the FPU
- * is only restored if fenab is non-zero in:
- * __get_user(fenab, &(ucp->tuc_mcontext.mc_fpregs.mcfpu_enab));
- */
- __get_user(env->fprs, &(ucp->tuc_mcontext.mc_fpregs.mcfpu_fprs));
- {
- uint32_t *src = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs;
- for (i = 0; i < 64; i++, src++) {
- if (i & 1) {
- __get_user(env->fpr[i/2].l.lower, src);
- } else {
- __get_user(env->fpr[i/2].l.upper, src);
- }
- }
- }
- __get_user(env->fsr,
- &(ucp->tuc_mcontext.mc_fpregs.mcfpu_fsr));
- __get_user(env->gsr,
- &(ucp->tuc_mcontext.mc_fpregs.mcfpu_gsr));
- unlock_user_struct(ucp, ucp_addr, 0);
- return;
-do_sigsegv:
- unlock_user_struct(ucp, ucp_addr, 0);
- force_sig(TARGET_SIGSEGV);
-}
-
-void sparc64_get_context(CPUSPARCState *env)
-{
- abi_ulong ucp_addr;
- struct target_ucontext *ucp;
- target_mc_gregset_t *grp;
- target_mcontext_t *mcp;
- abi_ulong fp, i7, w_addr;
- int err;
- unsigned int i;
- target_sigset_t target_set;
- sigset_t set;
-
- ucp_addr = env->regwptr[UREG_I0];
- if (!lock_user_struct(VERIFY_WRITE, ucp, ucp_addr, 0)) {
- goto do_sigsegv;
- }
-
- mcp = &ucp->tuc_mcontext;
- grp = &mcp->mc_gregs;
-
- /* Skip over the trap instruction, first. */
- env->pc = env->npc;
- env->npc += 4;
-
- /* If we're only reading the signal mask then do_sigprocmask()
- * is guaranteed not to fail, which is important because we don't
- * have any way to signal a failure or restart this operation since
- * this is not a normal syscall.
- */
- err = do_sigprocmask(0, NULL, &set);
- assert(err == 0);
- host_to_target_sigset_internal(&target_set, &set);
- if (TARGET_NSIG_WORDS == 1) {
- __put_user(target_set.sig[0],
- (abi_ulong *)&ucp->tuc_sigmask);
- } else {
- abi_ulong *src, *dst;
- src = target_set.sig;
- dst = ucp->tuc_sigmask.sig;
- for (i = 0; i < TARGET_NSIG_WORDS; i++, dst++, src++) {
- __put_user(*src, dst);
- }
- if (err)
- goto do_sigsegv;
- }
-
- /* XXX: tstate must be saved properly */
- // __put_user(env->tstate, &((*grp)[SPARC_MC_TSTATE]));
- __put_user(env->pc, &((*grp)[SPARC_MC_PC]));
- __put_user(env->npc, &((*grp)[SPARC_MC_NPC]));
- __put_user(env->y, &((*grp)[SPARC_MC_Y]));
- __put_user(env->gregs[1], &((*grp)[SPARC_MC_G1]));
- __put_user(env->gregs[2], &((*grp)[SPARC_MC_G2]));
- __put_user(env->gregs[3], &((*grp)[SPARC_MC_G3]));
- __put_user(env->gregs[4], &((*grp)[SPARC_MC_G4]));
- __put_user(env->gregs[5], &((*grp)[SPARC_MC_G5]));
- __put_user(env->gregs[6], &((*grp)[SPARC_MC_G6]));
- __put_user(env->gregs[7], &((*grp)[SPARC_MC_G7]));
- __put_user(env->regwptr[UREG_I0], &((*grp)[SPARC_MC_O0]));
- __put_user(env->regwptr[UREG_I1], &((*grp)[SPARC_MC_O1]));
- __put_user(env->regwptr[UREG_I2], &((*grp)[SPARC_MC_O2]));
- __put_user(env->regwptr[UREG_I3], &((*grp)[SPARC_MC_O3]));
- __put_user(env->regwptr[UREG_I4], &((*grp)[SPARC_MC_O4]));
- __put_user(env->regwptr[UREG_I5], &((*grp)[SPARC_MC_O5]));
- __put_user(env->regwptr[UREG_I6], &((*grp)[SPARC_MC_O6]));
- __put_user(env->regwptr[UREG_I7], &((*grp)[SPARC_MC_O7]));
-
- w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6];
- fp = i7 = 0;
- if (get_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]),
- abi_ulong) != 0) {
- goto do_sigsegv;
- }
- if (get_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]),
- abi_ulong) != 0) {
- goto do_sigsegv;
- }
- __put_user(fp, &(mcp->mc_fp));
- __put_user(i7, &(mcp->mc_i7));
-
- {
- uint32_t *dst = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs;
- for (i = 0; i < 64; i++, dst++) {
- if (i & 1) {
- __put_user(env->fpr[i/2].l.lower, dst);
- } else {
- __put_user(env->fpr[i/2].l.upper, dst);
- }
- }
- }
- __put_user(env->fsr, &(mcp->mc_fpregs.mcfpu_fsr));
- __put_user(env->gsr, &(mcp->mc_fpregs.mcfpu_gsr));
- __put_user(env->fprs, &(mcp->mc_fpregs.mcfpu_fprs));
-
- if (err)
- goto do_sigsegv;
- unlock_user_struct(ucp, ucp_addr, 1);
- return;
-do_sigsegv:
- unlock_user_struct(ucp, ucp_addr, 1);
- force_sig(TARGET_SIGSEGV);
-}
-#endif
-#elif defined(TARGET_MIPS) || defined(TARGET_MIPS64)
-
-# if defined(TARGET_ABI_MIPSO32)
-struct target_sigcontext {
- uint32_t sc_regmask; /* Unused */
- uint32_t sc_status;
- uint64_t sc_pc;
- uint64_t sc_regs[32];
- uint64_t sc_fpregs[32];
- uint32_t sc_ownedfp; /* Unused */
- uint32_t sc_fpc_csr;
- uint32_t sc_fpc_eir; /* Unused */
- uint32_t sc_used_math;
- uint32_t sc_dsp; /* dsp status, was sc_ssflags */
- uint32_t pad0;
- uint64_t sc_mdhi;
- uint64_t sc_mdlo;
- target_ulong sc_hi1; /* Was sc_cause */
- target_ulong sc_lo1; /* Was sc_badvaddr */
- target_ulong sc_hi2; /* Was sc_sigset[4] */
- target_ulong sc_lo2;
- target_ulong sc_hi3;
- target_ulong sc_lo3;
-};
-# else /* N32 || N64 */
-struct target_sigcontext {
- uint64_t sc_regs[32];
- uint64_t sc_fpregs[32];
- uint64_t sc_mdhi;
- uint64_t sc_hi1;
- uint64_t sc_hi2;
- uint64_t sc_hi3;
- uint64_t sc_mdlo;
- uint64_t sc_lo1;
- uint64_t sc_lo2;
- uint64_t sc_lo3;
- uint64_t sc_pc;
- uint32_t sc_fpc_csr;
- uint32_t sc_used_math;
- uint32_t sc_dsp;
- uint32_t sc_reserved;
-};
-# endif /* O32 */
-
-struct sigframe {
- uint32_t sf_ass[4]; /* argument save space for o32
*/
- uint32_t sf_code[2]; /* signal trampoline */
- struct target_sigcontext sf_sc;
- target_sigset_t sf_mask;
-};
-
-struct target_ucontext {
- target_ulong tuc_flags;
- target_ulong tuc_link;
- target_stack_t tuc_stack;
- target_ulong pad0;
- struct target_sigcontext tuc_mcontext;
- target_sigset_t tuc_sigmask;
-};
-
-struct target_rt_sigframe {
- uint32_t rs_ass[4]; /* argument save space for o32 */
- uint32_t rs_code[2]; /* signal trampoline */
- struct target_siginfo rs_info;
- struct target_ucontext rs_uc;
-};
-
-/* Install trampoline to jump back from signal handler */
-static inline int install_sigtramp(unsigned int *tramp, unsigned int syscall)
-{
- int err = 0;
-
- /*
- * Set up the return code ...
- *
- * li v0, __NR__foo_sigreturn
- * syscall
- */
-
- __put_user(0x24020000 + syscall, tramp + 0);
- __put_user(0x0000000c , tramp + 1);
- return err;
-}
-
-static inline void setup_sigcontext(CPUMIPSState *regs,
- struct target_sigcontext *sc)
-{
- int i;
-
- __put_user(exception_resume_pc(regs), &sc->sc_pc);
- regs->hflags &= ~MIPS_HFLAG_BMASK;
-
- __put_user(0, &sc->sc_regs[0]);
- for (i = 1; i < 32; ++i) {
- __put_user(regs->active_tc.gpr[i], &sc->sc_regs[i]);
- }
-
- __put_user(regs->active_tc.HI[0], &sc->sc_mdhi);
- __put_user(regs->active_tc.LO[0], &sc->sc_mdlo);
-
- /* Rather than checking for dsp existence, always copy. The storage
- would just be garbage otherwise. */
- __put_user(regs->active_tc.HI[1], &sc->sc_hi1);
- __put_user(regs->active_tc.HI[2], &sc->sc_hi2);
- __put_user(regs->active_tc.HI[3], &sc->sc_hi3);
- __put_user(regs->active_tc.LO[1], &sc->sc_lo1);
- __put_user(regs->active_tc.LO[2], &sc->sc_lo2);
- __put_user(regs->active_tc.LO[3], &sc->sc_lo3);
- {
- uint32_t dsp = cpu_rddsp(0x3ff, regs);
- __put_user(dsp, &sc->sc_dsp);
- }
-
- __put_user(1, &sc->sc_used_math);
-
- for (i = 0; i < 32; ++i) {
- __put_user(regs->active_fpu.fpr[i].d, &sc->sc_fpregs[i]);
- }
-}
-
-static inline void
-restore_sigcontext(CPUMIPSState *regs, struct target_sigcontext *sc)
-{
- int i;
-
- __get_user(regs->CP0_EPC, &sc->sc_pc);
-
- __get_user(regs->active_tc.HI[0], &sc->sc_mdhi);
- __get_user(regs->active_tc.LO[0], &sc->sc_mdlo);
-
- for (i = 1; i < 32; ++i) {
- __get_user(regs->active_tc.gpr[i], &sc->sc_regs[i]);
- }
-
- __get_user(regs->active_tc.HI[1], &sc->sc_hi1);
- __get_user(regs->active_tc.HI[2], &sc->sc_hi2);
- __get_user(regs->active_tc.HI[3], &sc->sc_hi3);
- __get_user(regs->active_tc.LO[1], &sc->sc_lo1);
- __get_user(regs->active_tc.LO[2], &sc->sc_lo2);
- __get_user(regs->active_tc.LO[3], &sc->sc_lo3);
- {
- uint32_t dsp;
- __get_user(dsp, &sc->sc_dsp);
- cpu_wrdsp(dsp, 0x3ff, regs);
- }
-
- for (i = 0; i < 32; ++i) {
- __get_user(regs->active_fpu.fpr[i].d, &sc->sc_fpregs[i]);
- }
-}
-
-/*
- * Determine which stack to use..
- */
-static inline abi_ulong
-get_sigframe(struct target_sigaction *ka, CPUMIPSState *regs, size_t
frame_size)
-{
- unsigned long sp;
-
- /* Default to using normal stack */
- sp = regs->active_tc.gpr[29];
-
- /*
- * FPU emulator may have its own trampoline active just
- * above the user stack, 16-bytes before the next lowest
- * 16 byte boundary. Try to avoid trashing it.
- */
- sp -= 32;
-
- /* This is the X/Open sanctioned signal stack switching. */
- if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) {
- sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
- }
-
- return (sp - frame_size) & ~7;
-}
-
-static void mips_set_hflags_isa_mode_from_pc(CPUMIPSState *env)
-{
- if (env->insn_flags & (ASE_MIPS16 | ASE_MICROMIPS)) {
- env->hflags &= ~MIPS_HFLAG_M16;
- env->hflags |= (env->active_tc.PC & 1) << MIPS_HFLAG_M16_SHIFT;
- env->active_tc.PC &= ~(target_ulong) 1;
- }
-}
-
-# if defined(TARGET_ABI_MIPSO32)
-/* compare linux/arch/mips/kernel/signal.c:setup_frame() */
-static void setup_frame(int sig, struct target_sigaction * ka,
- target_sigset_t *set, CPUMIPSState *regs)
-{
- struct sigframe *frame;
- abi_ulong frame_addr;
- int i;
-
- frame_addr = get_sigframe(ka, regs, sizeof(*frame));
- trace_user_setup_frame(regs, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
- goto give_sigsegv;
- }
-
- install_sigtramp(frame->sf_code, TARGET_NR_sigreturn);
-
- setup_sigcontext(regs, &frame->sf_sc);
-
- for(i = 0; i < TARGET_NSIG_WORDS; i++) {
- __put_user(set->sig[i], &frame->sf_mask.sig[i]);
- }
-
- /*
- * Arguments to signal handler:
- *
- * a0 = signal number
- * a1 = 0 (should be cause)
- * a2 = pointer to struct sigcontext
- *
- * $25 and PC point to the signal handler, $29 points to the
- * struct sigframe.
- */
- regs->active_tc.gpr[ 4] = sig;
- regs->active_tc.gpr[ 5] = 0;
- regs->active_tc.gpr[ 6] = frame_addr + offsetof(struct sigframe, sf_sc);
- regs->active_tc.gpr[29] = frame_addr;
- regs->active_tc.gpr[31] = frame_addr + offsetof(struct sigframe, sf_code);
- /* The original kernel code sets CP0_EPC to the handler
- * since it returns to userland using eret
- * we cannot do this here, and we must set PC directly */
- regs->active_tc.PC = regs->active_tc.gpr[25] = ka->_sa_handler;
- mips_set_hflags_isa_mode_from_pc(regs);
- unlock_user_struct(frame, frame_addr, 1);
- return;
-
-give_sigsegv:
- force_sigsegv(sig);
-}
-
-long do_sigreturn(CPUMIPSState *regs)
-{
- struct sigframe *frame;
- abi_ulong frame_addr;
- sigset_t blocked;
- target_sigset_t target_set;
- int i;
-
- frame_addr = regs->active_tc.gpr[29];
- trace_user_do_sigreturn(regs, frame_addr);
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
- goto badframe;
-
- for(i = 0; i < TARGET_NSIG_WORDS; i++) {
- __get_user(target_set.sig[i], &frame->sf_mask.sig[i]);
- }
-
- target_to_host_sigset_internal(&blocked, &target_set);
- set_sigmask(&blocked);
-
- restore_sigcontext(regs, &frame->sf_sc);
-
-#if 0
- /*
- * Don't let your children do this ...
- */
- __asm__ __volatile__(
- "move\t$29, %0\n\t"
- "j\tsyscall_exit"
- :/* no outputs */
- :"r" (®s));
- /* Unreached */
-#endif
-
- regs->active_tc.PC = regs->CP0_EPC;
- mips_set_hflags_isa_mode_from_pc(regs);
- /* I am not sure this is right, but it seems to work
- * maybe a problem with nested signals ? */
- regs->CP0_EPC = 0;
- return -TARGET_QEMU_ESIGRETURN;
-
-badframe:
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-# endif /* O32 */
-
-static void setup_rt_frame(int sig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPUMIPSState *env)
-{
- struct target_rt_sigframe *frame;
- abi_ulong frame_addr;
- int i;
-
- frame_addr = get_sigframe(ka, env, sizeof(*frame));
- trace_user_setup_rt_frame(env, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
- goto give_sigsegv;
- }
-
- install_sigtramp(frame->rs_code, TARGET_NR_rt_sigreturn);
-
- tswap_siginfo(&frame->rs_info, info);
-
- __put_user(0, &frame->rs_uc.tuc_flags);
- __put_user(0, &frame->rs_uc.tuc_link);
- __put_user(target_sigaltstack_used.ss_sp, &frame->rs_uc.tuc_stack.ss_sp);
- __put_user(target_sigaltstack_used.ss_size,
&frame->rs_uc.tuc_stack.ss_size);
- __put_user(sas_ss_flags(get_sp_from_cpustate(env)),
- &frame->rs_uc.tuc_stack.ss_flags);
-
- setup_sigcontext(env, &frame->rs_uc.tuc_mcontext);
-
- for(i = 0; i < TARGET_NSIG_WORDS; i++) {
- __put_user(set->sig[i], &frame->rs_uc.tuc_sigmask.sig[i]);
- }
-
- /*
- * Arguments to signal handler:
- *
- * a0 = signal number
- * a1 = pointer to siginfo_t
- * a2 = pointer to ucontext_t
- *
- * $25 and PC point to the signal handler, $29 points to the
- * struct sigframe.
- */
- env->active_tc.gpr[ 4] = sig;
- env->active_tc.gpr[ 5] = frame_addr
- + offsetof(struct target_rt_sigframe, rs_info);
- env->active_tc.gpr[ 6] = frame_addr
- + offsetof(struct target_rt_sigframe, rs_uc);
- env->active_tc.gpr[29] = frame_addr;
- env->active_tc.gpr[31] = frame_addr
- + offsetof(struct target_rt_sigframe, rs_code);
- /* The original kernel code sets CP0_EPC to the handler
- * since it returns to userland using eret
- * we cannot do this here, and we must set PC directly */
- env->active_tc.PC = env->active_tc.gpr[25] = ka->_sa_handler;
- mips_set_hflags_isa_mode_from_pc(env);
- unlock_user_struct(frame, frame_addr, 1);
- return;
-
-give_sigsegv:
- unlock_user_struct(frame, frame_addr, 1);
- force_sigsegv(sig);
-}
-
-long do_rt_sigreturn(CPUMIPSState *env)
-{
- struct target_rt_sigframe *frame;
- abi_ulong frame_addr;
- sigset_t blocked;
-
- frame_addr = env->active_tc.gpr[29];
- trace_user_do_rt_sigreturn(env, frame_addr);
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
- goto badframe;
- }
-
- target_to_host_sigset(&blocked, &frame->rs_uc.tuc_sigmask);
- set_sigmask(&blocked);
-
- restore_sigcontext(env, &frame->rs_uc.tuc_mcontext);
-
- if (do_sigaltstack(frame_addr +
- offsetof(struct target_rt_sigframe, rs_uc.tuc_stack),
- 0, get_sp_from_cpustate(env)) == -EFAULT)
- goto badframe;
-
- env->active_tc.PC = env->CP0_EPC;
- mips_set_hflags_isa_mode_from_pc(env);
- /* I am not sure this is right, but it seems to work
- * maybe a problem with nested signals ? */
- env->CP0_EPC = 0;
- return -TARGET_QEMU_ESIGRETURN;
-
-badframe:
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-
-#elif defined(TARGET_SH4)
-
-/*
- * code and data structures from linux kernel:
- * include/asm-sh/sigcontext.h
- * arch/sh/kernel/signal.c
- */
-
-struct target_sigcontext {
- target_ulong oldmask;
-
- /* CPU registers */
- target_ulong sc_gregs[16];
- target_ulong sc_pc;
- target_ulong sc_pr;
- target_ulong sc_sr;
- target_ulong sc_gbr;
- target_ulong sc_mach;
- target_ulong sc_macl;
-
- /* FPU registers */
- target_ulong sc_fpregs[16];
- target_ulong sc_xfpregs[16];
- unsigned int sc_fpscr;
- unsigned int sc_fpul;
- unsigned int sc_ownedfp;
-};
-
-struct target_sigframe
-{
- struct target_sigcontext sc;
- target_ulong extramask[TARGET_NSIG_WORDS-1];
- uint16_t retcode[3];
-};
-
-
-struct target_ucontext {
- target_ulong tuc_flags;
- struct target_ucontext *tuc_link;
- target_stack_t tuc_stack;
- struct target_sigcontext tuc_mcontext;
- target_sigset_t tuc_sigmask; /* mask last for extensibility */
-};
-
-struct target_rt_sigframe
-{
- struct target_siginfo info;
- struct target_ucontext uc;
- uint16_t retcode[3];
-};
-
-
-#define MOVW(n) (0x9300|((n)-2)) /* Move mem word at PC+n to R3 */
-#define TRAP_NOARG 0xc310 /* Syscall w/no args (NR in R3) SH3/4 */
-
-static abi_ulong get_sigframe(struct target_sigaction *ka,
- unsigned long sp, size_t frame_size)
-{
- if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags(sp) == 0)) {
- sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
- }
-
- return (sp - frame_size) & -8ul;
-}
-
-/* Notice when we're in the middle of a gUSA region and reset.
- Note that this will only occur for !parallel_cpus, as we will
- translate such sequences differently in a parallel context. */
-static void unwind_gusa(CPUSH4State *regs)
-{
- /* If the stack pointer is sufficiently negative, and we haven't
- completed the sequence, then reset to the entry to the region. */
- /* ??? The SH4 kernel checks for and address above 0xC0000000.
- However, the page mappings in qemu linux-user aren't as restricted
- and we wind up with the normal stack mapped above 0xF0000000.
- That said, there is no reason why the kernel should be allowing
- a gUSA region that spans 1GB. Use a tighter check here, for what
- can actually be enabled by the immediate move. */
- if (regs->gregs[15] >= -128u && regs->pc < regs->gregs[0]) {
- /* Reset the PC to before the gUSA region, as computed from
- R0 = region end, SP = -(region size), plus one more for the
- insn that actually initializes SP to the region size. */
- regs->pc = regs->gregs[0] + regs->gregs[15] - 2;
-
- /* Reset the SP to the saved version in R1. */
- regs->gregs[15] = regs->gregs[1];
- }
-}
-
-static void setup_sigcontext(struct target_sigcontext *sc,
- CPUSH4State *regs, unsigned long mask)
-{
- int i;
-
-#define COPY(x) __put_user(regs->x, &sc->sc_##x)
- COPY(gregs[0]); COPY(gregs[1]);
- COPY(gregs[2]); COPY(gregs[3]);
- COPY(gregs[4]); COPY(gregs[5]);
- COPY(gregs[6]); COPY(gregs[7]);
- COPY(gregs[8]); COPY(gregs[9]);
- COPY(gregs[10]); COPY(gregs[11]);
- COPY(gregs[12]); COPY(gregs[13]);
- COPY(gregs[14]); COPY(gregs[15]);
- COPY(gbr); COPY(mach);
- COPY(macl); COPY(pr);
- COPY(sr); COPY(pc);
-#undef COPY
-
- for (i=0; i<16; i++) {
- __put_user(regs->fregs[i], &sc->sc_fpregs[i]);
- }
- __put_user(regs->fpscr, &sc->sc_fpscr);
- __put_user(regs->fpul, &sc->sc_fpul);
-
- /* non-iBCS2 extensions.. */
- __put_user(mask, &sc->oldmask);
-}
-
-static void restore_sigcontext(CPUSH4State *regs, struct target_sigcontext *sc)
-{
- int i;
-
-#define COPY(x) __get_user(regs->x, &sc->sc_##x)
- COPY(gregs[0]); COPY(gregs[1]);
- COPY(gregs[2]); COPY(gregs[3]);
- COPY(gregs[4]); COPY(gregs[5]);
- COPY(gregs[6]); COPY(gregs[7]);
- COPY(gregs[8]); COPY(gregs[9]);
- COPY(gregs[10]); COPY(gregs[11]);
- COPY(gregs[12]); COPY(gregs[13]);
- COPY(gregs[14]); COPY(gregs[15]);
- COPY(gbr); COPY(mach);
- COPY(macl); COPY(pr);
- COPY(sr); COPY(pc);
-#undef COPY
-
- for (i=0; i<16; i++) {
- __get_user(regs->fregs[i], &sc->sc_fpregs[i]);
- }
- __get_user(regs->fpscr, &sc->sc_fpscr);
- __get_user(regs->fpul, &sc->sc_fpul);
-
- regs->tra = -1; /* disable syscall checks */
- regs->flags &= ~(DELAY_SLOT_MASK | GUSA_MASK);
-}
-
-static void setup_frame(int sig, struct target_sigaction *ka,
- target_sigset_t *set, CPUSH4State *regs)
-{
- struct target_sigframe *frame;
- abi_ulong frame_addr;
- int i;
-
- unwind_gusa(regs);
-
- frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame));
- trace_user_setup_frame(regs, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
- goto give_sigsegv;
- }
-
- setup_sigcontext(&frame->sc, regs, set->sig[0]);
-
- for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) {
- __put_user(set->sig[i + 1], &frame->extramask[i]);
- }
-
- /* Set up to return from userspace. If provided, use a stub
- already in userspace. */
- if (ka->sa_flags & TARGET_SA_RESTORER) {
- regs->pr = (unsigned long) ka->sa_restorer;
- } else {
- /* Generate return code (system call to sigreturn) */
- abi_ulong retcode_addr = frame_addr +
- offsetof(struct target_sigframe, retcode);
- __put_user(MOVW(2), &frame->retcode[0]);
- __put_user(TRAP_NOARG, &frame->retcode[1]);
- __put_user((TARGET_NR_sigreturn), &frame->retcode[2]);
- regs->pr = (unsigned long) retcode_addr;
- }
-
- /* Set up registers for signal handler */
- regs->gregs[15] = frame_addr;
- regs->gregs[4] = sig; /* Arg for signal handler */
- regs->gregs[5] = 0;
- regs->gregs[6] = frame_addr += offsetof(typeof(*frame), sc);
- regs->pc = (unsigned long) ka->_sa_handler;
- regs->flags &= ~(DELAY_SLOT_MASK | GUSA_MASK);
-
- unlock_user_struct(frame, frame_addr, 1);
- return;
-
-give_sigsegv:
- unlock_user_struct(frame, frame_addr, 1);
- force_sigsegv(sig);
-}
-
-static void setup_rt_frame(int sig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPUSH4State *regs)
-{
- struct target_rt_sigframe *frame;
- abi_ulong frame_addr;
- int i;
-
- unwind_gusa(regs);
-
- frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame));
- trace_user_setup_rt_frame(regs, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
- goto give_sigsegv;
- }
-
- tswap_siginfo(&frame->info, info);
-
- /* Create the ucontext. */
- __put_user(0, &frame->uc.tuc_flags);
- __put_user(0, (unsigned long *)&frame->uc.tuc_link);
- __put_user((unsigned long)target_sigaltstack_used.ss_sp,
- &frame->uc.tuc_stack.ss_sp);
- __put_user(sas_ss_flags(regs->gregs[15]),
- &frame->uc.tuc_stack.ss_flags);
- __put_user(target_sigaltstack_used.ss_size,
- &frame->uc.tuc_stack.ss_size);
- setup_sigcontext(&frame->uc.tuc_mcontext,
- regs, set->sig[0]);
- for(i = 0; i < TARGET_NSIG_WORDS; i++) {
- __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
- }
-
- /* Set up to return from userspace. If provided, use a stub
- already in userspace. */
- if (ka->sa_flags & TARGET_SA_RESTORER) {
- regs->pr = (unsigned long) ka->sa_restorer;
- } else {
- /* Generate return code (system call to sigreturn) */
- abi_ulong retcode_addr = frame_addr +
- offsetof(struct target_rt_sigframe, retcode);
- __put_user(MOVW(2), &frame->retcode[0]);
- __put_user(TRAP_NOARG, &frame->retcode[1]);
- __put_user((TARGET_NR_rt_sigreturn), &frame->retcode[2]);
- regs->pr = (unsigned long) retcode_addr;
- }
-
- /* Set up registers for signal handler */
- regs->gregs[15] = frame_addr;
- regs->gregs[4] = sig; /* Arg for signal handler */
- regs->gregs[5] = frame_addr + offsetof(typeof(*frame), info);
- regs->gregs[6] = frame_addr + offsetof(typeof(*frame), uc);
- regs->pc = (unsigned long) ka->_sa_handler;
- regs->flags &= ~(DELAY_SLOT_MASK | GUSA_MASK);
-
- unlock_user_struct(frame, frame_addr, 1);
- return;
-
-give_sigsegv:
- unlock_user_struct(frame, frame_addr, 1);
- force_sigsegv(sig);
-}
-
-long do_sigreturn(CPUSH4State *regs)
-{
- struct target_sigframe *frame;
- abi_ulong frame_addr;
- sigset_t blocked;
- target_sigset_t target_set;
- int i;
- int err = 0;
-
- frame_addr = regs->gregs[15];
- trace_user_do_sigreturn(regs, frame_addr);
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
- goto badframe;
- }
-
- __get_user(target_set.sig[0], &frame->sc.oldmask);
- for(i = 1; i < TARGET_NSIG_WORDS; i++) {
- __get_user(target_set.sig[i], &frame->extramask[i - 1]);
- }
-
- if (err)
- goto badframe;
-
- target_to_host_sigset_internal(&blocked, &target_set);
- set_sigmask(&blocked);
-
- restore_sigcontext(regs, &frame->sc);
-
- unlock_user_struct(frame, frame_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-
-badframe:
- unlock_user_struct(frame, frame_addr, 0);
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-
-long do_rt_sigreturn(CPUSH4State *regs)
-{
- struct target_rt_sigframe *frame;
- abi_ulong frame_addr;
- sigset_t blocked;
-
- frame_addr = regs->gregs[15];
- trace_user_do_rt_sigreturn(regs, frame_addr);
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
- goto badframe;
- }
-
- target_to_host_sigset(&blocked, &frame->uc.tuc_sigmask);
- set_sigmask(&blocked);
-
- restore_sigcontext(regs, &frame->uc.tuc_mcontext);
-
- if (do_sigaltstack(frame_addr +
- offsetof(struct target_rt_sigframe, uc.tuc_stack),
- 0, get_sp_from_cpustate(regs)) == -EFAULT) {
- goto badframe;
- }
-
- unlock_user_struct(frame, frame_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-
-badframe:
- unlock_user_struct(frame, frame_addr, 0);
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-#elif defined(TARGET_MICROBLAZE)
-
-struct target_sigcontext {
- struct target_pt_regs regs; /* needs to be first */
- uint32_t oldmask;
-};
-
-struct target_stack_t {
- abi_ulong ss_sp;
- int ss_flags;
- unsigned int ss_size;
-};
-
-struct target_ucontext {
- abi_ulong tuc_flags;
- abi_ulong tuc_link;
- struct target_stack_t tuc_stack;
- struct target_sigcontext tuc_mcontext;
- uint32_t tuc_extramask[TARGET_NSIG_WORDS - 1];
-};
-
-/* Signal frames. */
-struct target_signal_frame {
- struct target_ucontext uc;
- uint32_t extramask[TARGET_NSIG_WORDS - 1];
- uint32_t tramp[2];
-};
-
-struct rt_signal_frame {
- siginfo_t info;
- ucontext_t uc;
- uint32_t tramp[2];
-};
-
-static void setup_sigcontext(struct target_sigcontext *sc, CPUMBState *env)
-{
- __put_user(env->regs[0], &sc->regs.r0);
- __put_user(env->regs[1], &sc->regs.r1);
- __put_user(env->regs[2], &sc->regs.r2);
- __put_user(env->regs[3], &sc->regs.r3);
- __put_user(env->regs[4], &sc->regs.r4);
- __put_user(env->regs[5], &sc->regs.r5);
- __put_user(env->regs[6], &sc->regs.r6);
- __put_user(env->regs[7], &sc->regs.r7);
- __put_user(env->regs[8], &sc->regs.r8);
- __put_user(env->regs[9], &sc->regs.r9);
- __put_user(env->regs[10], &sc->regs.r10);
- __put_user(env->regs[11], &sc->regs.r11);
- __put_user(env->regs[12], &sc->regs.r12);
- __put_user(env->regs[13], &sc->regs.r13);
- __put_user(env->regs[14], &sc->regs.r14);
- __put_user(env->regs[15], &sc->regs.r15);
- __put_user(env->regs[16], &sc->regs.r16);
- __put_user(env->regs[17], &sc->regs.r17);
- __put_user(env->regs[18], &sc->regs.r18);
- __put_user(env->regs[19], &sc->regs.r19);
- __put_user(env->regs[20], &sc->regs.r20);
- __put_user(env->regs[21], &sc->regs.r21);
- __put_user(env->regs[22], &sc->regs.r22);
- __put_user(env->regs[23], &sc->regs.r23);
- __put_user(env->regs[24], &sc->regs.r24);
- __put_user(env->regs[25], &sc->regs.r25);
- __put_user(env->regs[26], &sc->regs.r26);
- __put_user(env->regs[27], &sc->regs.r27);
- __put_user(env->regs[28], &sc->regs.r28);
- __put_user(env->regs[29], &sc->regs.r29);
- __put_user(env->regs[30], &sc->regs.r30);
- __put_user(env->regs[31], &sc->regs.r31);
- __put_user(env->sregs[SR_PC], &sc->regs.pc);
-}
-
-static void restore_sigcontext(struct target_sigcontext *sc, CPUMBState *env)
-{
- __get_user(env->regs[0], &sc->regs.r0);
- __get_user(env->regs[1], &sc->regs.r1);
- __get_user(env->regs[2], &sc->regs.r2);
- __get_user(env->regs[3], &sc->regs.r3);
- __get_user(env->regs[4], &sc->regs.r4);
- __get_user(env->regs[5], &sc->regs.r5);
- __get_user(env->regs[6], &sc->regs.r6);
- __get_user(env->regs[7], &sc->regs.r7);
- __get_user(env->regs[8], &sc->regs.r8);
- __get_user(env->regs[9], &sc->regs.r9);
- __get_user(env->regs[10], &sc->regs.r10);
- __get_user(env->regs[11], &sc->regs.r11);
- __get_user(env->regs[12], &sc->regs.r12);
- __get_user(env->regs[13], &sc->regs.r13);
- __get_user(env->regs[14], &sc->regs.r14);
- __get_user(env->regs[15], &sc->regs.r15);
- __get_user(env->regs[16], &sc->regs.r16);
- __get_user(env->regs[17], &sc->regs.r17);
- __get_user(env->regs[18], &sc->regs.r18);
- __get_user(env->regs[19], &sc->regs.r19);
- __get_user(env->regs[20], &sc->regs.r20);
- __get_user(env->regs[21], &sc->regs.r21);
- __get_user(env->regs[22], &sc->regs.r22);
- __get_user(env->regs[23], &sc->regs.r23);
- __get_user(env->regs[24], &sc->regs.r24);
- __get_user(env->regs[25], &sc->regs.r25);
- __get_user(env->regs[26], &sc->regs.r26);
- __get_user(env->regs[27], &sc->regs.r27);
- __get_user(env->regs[28], &sc->regs.r28);
- __get_user(env->regs[29], &sc->regs.r29);
- __get_user(env->regs[30], &sc->regs.r30);
- __get_user(env->regs[31], &sc->regs.r31);
- __get_user(env->sregs[SR_PC], &sc->regs.pc);
-}
-
-static abi_ulong get_sigframe(struct target_sigaction *ka,
- CPUMBState *env, int frame_size)
-{
- abi_ulong sp = env->regs[1];
-
- if ((ka->sa_flags & TARGET_SA_ONSTACK) != 0 && !on_sig_stack(sp)) {
- sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
- }
-
- return ((sp - frame_size) & -8UL);
-}
-
-static void setup_frame(int sig, struct target_sigaction *ka,
- target_sigset_t *set, CPUMBState *env)
-{
- struct target_signal_frame *frame;
- abi_ulong frame_addr;
- int i;
-
- frame_addr = get_sigframe(ka, env, sizeof *frame);
- trace_user_setup_frame(env, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
- goto badframe;
-
- /* Save the mask. */
- __put_user(set->sig[0], &frame->uc.tuc_mcontext.oldmask);
-
- for(i = 1; i < TARGET_NSIG_WORDS; i++) {
- __put_user(set->sig[i], &frame->extramask[i - 1]);
- }
-
- setup_sigcontext(&frame->uc.tuc_mcontext, env);
-
- /* Set up to return from userspace. If provided, use a stub
- already in userspace. */
- /* minus 8 is offset to cater for "rtsd r15,8" offset */
- if (ka->sa_flags & TARGET_SA_RESTORER) {
- env->regs[15] = ((unsigned long)ka->sa_restorer)-8;
- } else {
- uint32_t t;
- /* Note, these encodings are _big endian_! */
- /* addi r12, r0, __NR_sigreturn */
- t = 0x31800000UL | TARGET_NR_sigreturn;
- __put_user(t, frame->tramp + 0);
- /* brki r14, 0x8 */
- t = 0xb9cc0008UL;
- __put_user(t, frame->tramp + 1);
-
- /* Return from sighandler will jump to the tramp.
- Negative 8 offset because return is rtsd r15, 8 */
- env->regs[15] = frame_addr + offsetof(struct target_signal_frame,
tramp)
- - 8;
- }
-
- /* Set up registers for signal handler */
- env->regs[1] = frame_addr;
- /* Signal handler args: */
- env->regs[5] = sig; /* Arg 0: signum */
- env->regs[6] = 0;
- /* arg 1: sigcontext */
- env->regs[7] = frame_addr += offsetof(typeof(*frame), uc);
-
- /* Offset of 4 to handle microblaze rtid r14, 0 */
- env->sregs[SR_PC] = (unsigned long)ka->_sa_handler;
-
- unlock_user_struct(frame, frame_addr, 1);
- return;
-badframe:
- force_sigsegv(sig);
-}
-
-static void setup_rt_frame(int sig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPUMBState *env)
-{
- fprintf(stderr, "Microblaze setup_rt_frame: not implemented\n");
-}
-
-long do_sigreturn(CPUMBState *env)
-{
- struct target_signal_frame *frame;
- abi_ulong frame_addr;
- target_sigset_t target_set;
- sigset_t set;
- int i;
-
- frame_addr = env->regs[R_SP];
- trace_user_do_sigreturn(env, frame_addr);
- /* Make sure the guest isn't playing games. */
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
- goto badframe;
-
- /* Restore blocked signals */
- __get_user(target_set.sig[0], &frame->uc.tuc_mcontext.oldmask);
- for(i = 1; i < TARGET_NSIG_WORDS; i++) {
- __get_user(target_set.sig[i], &frame->extramask[i - 1]);
- }
- target_to_host_sigset_internal(&set, &target_set);
- set_sigmask(&set);
-
- restore_sigcontext(&frame->uc.tuc_mcontext, env);
- /* We got here through a sigreturn syscall, our path back is via an
- rtb insn so setup r14 for that. */
- env->regs[14] = env->sregs[SR_PC];
-
- unlock_user_struct(frame, frame_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-badframe:
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-
-long do_rt_sigreturn(CPUMBState *env)
-{
- trace_user_do_rt_sigreturn(env, 0);
- fprintf(stderr, "Microblaze do_rt_sigreturn: not implemented\n");
- return -TARGET_ENOSYS;
-}
-
-#elif defined(TARGET_CRIS)
-
-struct target_sigcontext {
- struct target_pt_regs regs; /* needs to be first */
- uint32_t oldmask;
- uint32_t usp; /* usp before stacking this gunk on it */
-};
-
-/* Signal frames. */
-struct target_signal_frame {
- struct target_sigcontext sc;
- uint32_t extramask[TARGET_NSIG_WORDS - 1];
- uint16_t retcode[4]; /* Trampoline code. */
-};
-
-struct rt_signal_frame {
- siginfo_t *pinfo;
- void *puc;
- siginfo_t info;
- ucontext_t uc;
- uint16_t retcode[4]; /* Trampoline code. */
-};
-
-static void setup_sigcontext(struct target_sigcontext *sc, CPUCRISState *env)
-{
- __put_user(env->regs[0], &sc->regs.r0);
- __put_user(env->regs[1], &sc->regs.r1);
- __put_user(env->regs[2], &sc->regs.r2);
- __put_user(env->regs[3], &sc->regs.r3);
- __put_user(env->regs[4], &sc->regs.r4);
- __put_user(env->regs[5], &sc->regs.r5);
- __put_user(env->regs[6], &sc->regs.r6);
- __put_user(env->regs[7], &sc->regs.r7);
- __put_user(env->regs[8], &sc->regs.r8);
- __put_user(env->regs[9], &sc->regs.r9);
- __put_user(env->regs[10], &sc->regs.r10);
- __put_user(env->regs[11], &sc->regs.r11);
- __put_user(env->regs[12], &sc->regs.r12);
- __put_user(env->regs[13], &sc->regs.r13);
- __put_user(env->regs[14], &sc->usp);
- __put_user(env->regs[15], &sc->regs.acr);
- __put_user(env->pregs[PR_MOF], &sc->regs.mof);
- __put_user(env->pregs[PR_SRP], &sc->regs.srp);
- __put_user(env->pc, &sc->regs.erp);
-}
-
-static void restore_sigcontext(struct target_sigcontext *sc, CPUCRISState *env)
-{
- __get_user(env->regs[0], &sc->regs.r0);
- __get_user(env->regs[1], &sc->regs.r1);
- __get_user(env->regs[2], &sc->regs.r2);
- __get_user(env->regs[3], &sc->regs.r3);
- __get_user(env->regs[4], &sc->regs.r4);
- __get_user(env->regs[5], &sc->regs.r5);
- __get_user(env->regs[6], &sc->regs.r6);
- __get_user(env->regs[7], &sc->regs.r7);
- __get_user(env->regs[8], &sc->regs.r8);
- __get_user(env->regs[9], &sc->regs.r9);
- __get_user(env->regs[10], &sc->regs.r10);
- __get_user(env->regs[11], &sc->regs.r11);
- __get_user(env->regs[12], &sc->regs.r12);
- __get_user(env->regs[13], &sc->regs.r13);
- __get_user(env->regs[14], &sc->usp);
- __get_user(env->regs[15], &sc->regs.acr);
- __get_user(env->pregs[PR_MOF], &sc->regs.mof);
- __get_user(env->pregs[PR_SRP], &sc->regs.srp);
- __get_user(env->pc, &sc->regs.erp);
-}
-
-static abi_ulong get_sigframe(CPUCRISState *env, int framesize)
-{
- abi_ulong sp;
- /* Align the stack downwards to 4. */
- sp = (env->regs[R_SP] & ~3);
- return sp - framesize;
-}
-
-static void setup_frame(int sig, struct target_sigaction *ka,
- target_sigset_t *set, CPUCRISState *env)
-{
- struct target_signal_frame *frame;
- abi_ulong frame_addr;
- int i;
-
- frame_addr = get_sigframe(env, sizeof *frame);
- trace_user_setup_frame(env, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
- goto badframe;
-
- /*
- * The CRIS signal return trampoline. A real linux/CRIS kernel doesn't
- * use this trampoline anymore but it sets it up for GDB.
- * In QEMU, using the trampoline simplifies things a bit so we use it.
- *
- * This is movu.w __NR_sigreturn, r9; break 13;
- */
- __put_user(0x9c5f, frame->retcode+0);
- __put_user(TARGET_NR_sigreturn,
- frame->retcode + 1);
- __put_user(0xe93d, frame->retcode + 2);
-
- /* Save the mask. */
- __put_user(set->sig[0], &frame->sc.oldmask);
-
- for(i = 1; i < TARGET_NSIG_WORDS; i++) {
- __put_user(set->sig[i], &frame->extramask[i - 1]);
- }
-
- setup_sigcontext(&frame->sc, env);
-
- /* Move the stack and setup the arguments for the handler. */
- env->regs[R_SP] = frame_addr;
- env->regs[10] = sig;
- env->pc = (unsigned long) ka->_sa_handler;
- /* Link SRP so the guest returns through the trampoline. */
- env->pregs[PR_SRP] = frame_addr + offsetof(typeof(*frame), retcode);
-
- unlock_user_struct(frame, frame_addr, 1);
- return;
-badframe:
- force_sigsegv(sig);
-}
-
-static void setup_rt_frame(int sig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPUCRISState *env)
-{
- fprintf(stderr, "CRIS setup_rt_frame: not implemented\n");
-}
-
-long do_sigreturn(CPUCRISState *env)
-{
- struct target_signal_frame *frame;
- abi_ulong frame_addr;
- target_sigset_t target_set;
- sigset_t set;
- int i;
-
- frame_addr = env->regs[R_SP];
- trace_user_do_sigreturn(env, frame_addr);
- /* Make sure the guest isn't playing games. */
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) {
- goto badframe;
- }
-
- /* Restore blocked signals */
- __get_user(target_set.sig[0], &frame->sc.oldmask);
- for(i = 1; i < TARGET_NSIG_WORDS; i++) {
- __get_user(target_set.sig[i], &frame->extramask[i - 1]);
- }
- target_to_host_sigset_internal(&set, &target_set);
- set_sigmask(&set);
-
- restore_sigcontext(&frame->sc, env);
- unlock_user_struct(frame, frame_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-badframe:
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-
-long do_rt_sigreturn(CPUCRISState *env)
-{
- trace_user_do_rt_sigreturn(env, 0);
- fprintf(stderr, "CRIS do_rt_sigreturn: not implemented\n");
- return -TARGET_ENOSYS;
-}
-
-#elif defined(TARGET_NIOS2)
-
-#define MCONTEXT_VERSION 2
-
-struct target_sigcontext {
- int version;
- unsigned long gregs[32];
-};
-
-struct target_ucontext {
- abi_ulong tuc_flags;
- abi_ulong tuc_link;
- target_stack_t tuc_stack;
- struct target_sigcontext tuc_mcontext;
- target_sigset_t tuc_sigmask; /* mask last for extensibility */
-};
-
-struct target_rt_sigframe {
- struct target_siginfo info;
- struct target_ucontext uc;
-};
-
-static unsigned long sigsp(unsigned long sp, struct target_sigaction *ka)
-{
- if (unlikely((ka->sa_flags & SA_ONSTACK)) && !sas_ss_flags(sp)) {
-#ifdef CONFIG_STACK_GROWSUP
- return target_sigaltstack_used.ss_sp;
-#else
- return target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
-#endif
- }
- return sp;
-}
-
-static int rt_setup_ucontext(struct target_ucontext *uc, CPUNios2State *env)
-{
- unsigned long *gregs = uc->tuc_mcontext.gregs;
-
- __put_user(MCONTEXT_VERSION, &uc->tuc_mcontext.version);
- __put_user(env->regs[1], &gregs[0]);
- __put_user(env->regs[2], &gregs[1]);
- __put_user(env->regs[3], &gregs[2]);
- __put_user(env->regs[4], &gregs[3]);
- __put_user(env->regs[5], &gregs[4]);
- __put_user(env->regs[6], &gregs[5]);
- __put_user(env->regs[7], &gregs[6]);
- __put_user(env->regs[8], &gregs[7]);
- __put_user(env->regs[9], &gregs[8]);
- __put_user(env->regs[10], &gregs[9]);
- __put_user(env->regs[11], &gregs[10]);
- __put_user(env->regs[12], &gregs[11]);
- __put_user(env->regs[13], &gregs[12]);
- __put_user(env->regs[14], &gregs[13]);
- __put_user(env->regs[15], &gregs[14]);
- __put_user(env->regs[16], &gregs[15]);
- __put_user(env->regs[17], &gregs[16]);
- __put_user(env->regs[18], &gregs[17]);
- __put_user(env->regs[19], &gregs[18]);
- __put_user(env->regs[20], &gregs[19]);
- __put_user(env->regs[21], &gregs[20]);
- __put_user(env->regs[22], &gregs[21]);
- __put_user(env->regs[23], &gregs[22]);
- __put_user(env->regs[R_RA], &gregs[23]);
- __put_user(env->regs[R_FP], &gregs[24]);
- __put_user(env->regs[R_GP], &gregs[25]);
- __put_user(env->regs[R_EA], &gregs[27]);
- __put_user(env->regs[R_SP], &gregs[28]);
-
- return 0;
-}
-
-static int rt_restore_ucontext(CPUNios2State *env, struct target_ucontext *uc,
- int *pr2)
-{
- int temp;
- abi_ulong off, frame_addr = env->regs[R_SP];
- unsigned long *gregs = uc->tuc_mcontext.gregs;
- int err;
-
- /* Always make any pending restarted system calls return -EINTR */
- /* current->restart_block.fn = do_no_restart_syscall; */
-
- __get_user(temp, &uc->tuc_mcontext.version);
- if (temp != MCONTEXT_VERSION) {
- return 1;
- }
-
- /* restore passed registers */
- __get_user(env->regs[1], &gregs[0]);
- __get_user(env->regs[2], &gregs[1]);
- __get_user(env->regs[3], &gregs[2]);
- __get_user(env->regs[4], &gregs[3]);
- __get_user(env->regs[5], &gregs[4]);
- __get_user(env->regs[6], &gregs[5]);
- __get_user(env->regs[7], &gregs[6]);
- __get_user(env->regs[8], &gregs[7]);
- __get_user(env->regs[9], &gregs[8]);
- __get_user(env->regs[10], &gregs[9]);
- __get_user(env->regs[11], &gregs[10]);
- __get_user(env->regs[12], &gregs[11]);
- __get_user(env->regs[13], &gregs[12]);
- __get_user(env->regs[14], &gregs[13]);
- __get_user(env->regs[15], &gregs[14]);
- __get_user(env->regs[16], &gregs[15]);
- __get_user(env->regs[17], &gregs[16]);
- __get_user(env->regs[18], &gregs[17]);
- __get_user(env->regs[19], &gregs[18]);
- __get_user(env->regs[20], &gregs[19]);
- __get_user(env->regs[21], &gregs[20]);
- __get_user(env->regs[22], &gregs[21]);
- __get_user(env->regs[23], &gregs[22]);
- /* gregs[23] is handled below */
- /* Verify, should this be settable */
- __get_user(env->regs[R_FP], &gregs[24]);
- /* Verify, should this be settable */
- __get_user(env->regs[R_GP], &gregs[25]);
- /* Not really necessary no user settable bits */
- __get_user(temp, &gregs[26]);
- __get_user(env->regs[R_EA], &gregs[27]);
-
- __get_user(env->regs[R_RA], &gregs[23]);
- __get_user(env->regs[R_SP], &gregs[28]);
-
- off = offsetof(struct target_rt_sigframe, uc.tuc_stack);
- err = do_sigaltstack(frame_addr + off, 0, get_sp_from_cpustate(env));
- if (err == -EFAULT) {
- return 1;
- }
-
- *pr2 = env->regs[2];
- return 0;
-}
-
-static void *get_sigframe(struct target_sigaction *ka, CPUNios2State *env,
- size_t frame_size)
-{
- unsigned long usp;
-
- /* Default to using normal stack. */
- usp = env->regs[R_SP];
-
- /* This is the X/Open sanctioned signal stack switching. */
- usp = sigsp(usp, ka);
-
- /* Verify, is it 32 or 64 bit aligned */
- return (void *)((usp - frame_size) & -8UL);
-}
-
-static void setup_rt_frame(int sig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set,
- CPUNios2State *env)
-{
- struct target_rt_sigframe *frame;
- int i, err = 0;
-
- frame = get_sigframe(ka, env, sizeof(*frame));
-
- if (ka->sa_flags & SA_SIGINFO) {
- tswap_siginfo(&frame->info, info);
- }
-
- /* Create the ucontext. */
- __put_user(0, &frame->uc.tuc_flags);
- __put_user(0, &frame->uc.tuc_link);
- __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
- __put_user(sas_ss_flags(env->regs[R_SP]), &frame->uc.tuc_stack.ss_flags);
- __put_user(target_sigaltstack_used.ss_size, &frame->uc.tuc_stack.ss_size);
- err |= rt_setup_ucontext(&frame->uc, env);
- for (i = 0; i < TARGET_NSIG_WORDS; i++) {
- __put_user((abi_ulong)set->sig[i],
- (abi_ulong *)&frame->uc.tuc_sigmask.sig[i]);
- }
-
- if (err) {
- goto give_sigsegv;
- }
-
- /* Set up to return from userspace; jump to fixed address sigreturn
- trampoline on kuser page. */
- env->regs[R_RA] = (unsigned long) (0x1044);
-
- /* Set up registers for signal handler */
- env->regs[R_SP] = (unsigned long) frame;
- env->regs[4] = (unsigned long) sig;
- env->regs[5] = (unsigned long) &frame->info;
- env->regs[6] = (unsigned long) &frame->uc;
- env->regs[R_EA] = (unsigned long) ka->_sa_handler;
- return;
-
-give_sigsegv:
- if (sig == TARGET_SIGSEGV) {
- ka->_sa_handler = TARGET_SIG_DFL;
- }
- force_sigsegv(sig);
- return;
-}
-
-long do_sigreturn(CPUNios2State *env)
-{
- trace_user_do_sigreturn(env, 0);
- fprintf(stderr, "do_sigreturn: not implemented\n");
- return -TARGET_ENOSYS;
-}
-
-long do_rt_sigreturn(CPUNios2State *env)
-{
- /* Verify, can we follow the stack back */
- abi_ulong frame_addr = env->regs[R_SP];
- struct target_rt_sigframe *frame;
- sigset_t set;
- int rval;
-
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
- goto badframe;
- }
-
- target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
- do_sigprocmask(SIG_SETMASK, &set, NULL);
-
- if (rt_restore_ucontext(env, &frame->uc, &rval)) {
- goto badframe;
- }
-
- unlock_user_struct(frame, frame_addr, 0);
- return rval;
-
-badframe:
- unlock_user_struct(frame, frame_addr, 0);
- force_sig(TARGET_SIGSEGV);
- return 0;
-}
-/* TARGET_NIOS2 */
-
-#elif defined(TARGET_OPENRISC)
-
-struct target_sigcontext {
- struct target_pt_regs regs;
- abi_ulong oldmask;
- abi_ulong usp;
-};
-
-struct target_ucontext {
- abi_ulong tuc_flags;
- abi_ulong tuc_link;
- target_stack_t tuc_stack;
- struct target_sigcontext tuc_mcontext;
- target_sigset_t tuc_sigmask; /* mask last for extensibility */
-};
-
-struct target_rt_sigframe {
- abi_ulong pinfo;
- uint64_t puc;
- struct target_siginfo info;
- struct target_sigcontext sc;
- struct target_ucontext uc;
- unsigned char retcode[16]; /* trampoline code */
-};
-
-/* This is the asm-generic/ucontext.h version */
-#if 0
-static int restore_sigcontext(CPUOpenRISCState *regs,
- struct target_sigcontext *sc)
-{
- unsigned int err = 0;
- unsigned long old_usp;
-
- /* Alwys make any pending restarted system call return -EINTR */
- current_thread_info()->restart_block.fn = do_no_restart_syscall;
-
- /* restore the regs from &sc->regs (same as sc, since regs is first)
- * (sc is already checked for VERIFY_READ since the sigframe was
- * checked in sys_sigreturn previously)
- */
-
- if (copy_from_user(regs, &sc, sizeof(struct target_pt_regs))) {
- goto badframe;
- }
-
- /* make sure the U-flag is set so user-mode cannot fool us */
-
- regs->sr &= ~SR_SM;
-
- /* restore the old USP as it was before we stacked the sc etc.
- * (we cannot just pop the sigcontext since we aligned the sp and
- * stuff after pushing it)
- */
-
- __get_user(old_usp, &sc->usp);
- phx_signal("old_usp 0x%lx", old_usp);
-
- __PHX__ REALLY /* ??? */
- wrusp(old_usp);
- regs->gpr[1] = old_usp;
-
- /* TODO: the other ports use regs->orig_XX to disable syscall checks
- * after this completes, but we don't use that mechanism. maybe we can
- * use it now ?
- */
-
- return err;
-
-badframe:
- return 1;
-}
-#endif
-
-/* Set up a signal frame. */
-
-static void setup_sigcontext(struct target_sigcontext *sc,
- CPUOpenRISCState *regs,
- unsigned long mask)
-{
- unsigned long usp = cpu_get_gpr(regs, 1);
-
- /* copy the regs. they are first in sc so we can use sc directly */
-
- /*copy_to_user(&sc, regs, sizeof(struct target_pt_regs));*/
-
- /* Set the frametype to CRIS_FRAME_NORMAL for the execution of
- the signal handler. The frametype will be restored to its previous
- value in restore_sigcontext. */
- /*regs->frametype = CRIS_FRAME_NORMAL;*/
-
- /* then some other stuff */
- __put_user(mask, &sc->oldmask);
- __put_user(usp, &sc->usp);
-}
-
-static inline unsigned long align_sigframe(unsigned long sp)
-{
- return sp & ~3UL;
-}
-
-static inline abi_ulong get_sigframe(struct target_sigaction *ka,
- CPUOpenRISCState *regs,
- size_t frame_size)
-{
- unsigned long sp = cpu_get_gpr(regs, 1);
- int onsigstack = on_sig_stack(sp);
-
- /* redzone */
- /* This is the X/Open sanctioned signal stack switching. */
- if ((ka->sa_flags & TARGET_SA_ONSTACK) != 0 && !onsigstack) {
- sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
- }
-
- sp = align_sigframe(sp - frame_size);
-
- /*
- * If we are on the alternate signal stack and would overflow it, don't.
- * Return an always-bogus address instead so we will die with SIGSEGV.
- */
-
- if (onsigstack && !likely(on_sig_stack(sp))) {
- return -1L;
- }
-
- return sp;
-}
-
-static void setup_rt_frame(int sig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPUOpenRISCState *env)
-{
- int err = 0;
- abi_ulong frame_addr;
- unsigned long return_ip;
- struct target_rt_sigframe *frame;
- abi_ulong info_addr, uc_addr;
-
- frame_addr = get_sigframe(ka, env, sizeof(*frame));
- trace_user_setup_rt_frame(env, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
- goto give_sigsegv;
- }
-
- info_addr = frame_addr + offsetof(struct target_rt_sigframe, info);
- __put_user(info_addr, &frame->pinfo);
- uc_addr = frame_addr + offsetof(struct target_rt_sigframe, uc);
- __put_user(uc_addr, &frame->puc);
-
- if (ka->sa_flags & SA_SIGINFO) {
- tswap_siginfo(&frame->info, info);
- }
-
- /*err |= __clear_user(&frame->uc, offsetof(ucontext_t, uc_mcontext));*/
- __put_user(0, &frame->uc.tuc_flags);
- __put_user(0, &frame->uc.tuc_link);
- __put_user(target_sigaltstack_used.ss_sp,
- &frame->uc.tuc_stack.ss_sp);
- __put_user(sas_ss_flags(cpu_get_gpr(env, 1)),
- &frame->uc.tuc_stack.ss_flags);
- __put_user(target_sigaltstack_used.ss_size,
- &frame->uc.tuc_stack.ss_size);
- setup_sigcontext(&frame->sc, env, set->sig[0]);
-
- /*err |= copy_to_user(frame->uc.tuc_sigmask, set, sizeof(*set));*/
-
- /* trampoline - the desired return ip is the retcode itself */
- return_ip = (unsigned long)&frame->retcode;
- /* This is l.ori r11,r0,__NR_sigreturn, l.sys 1 */
- __put_user(0xa960, (short *)(frame->retcode + 0));
- __put_user(TARGET_NR_rt_sigreturn, (short *)(frame->retcode + 2));
- __put_user(0x20000001, (unsigned long *)(frame->retcode + 4));
- __put_user(0x15000000, (unsigned long *)(frame->retcode + 8));
-
- if (err) {
- goto give_sigsegv;
- }
-
- /* TODO what is the current->exec_domain stuff and invmap ? */
-
- /* Set up registers for signal handler */
- env->pc = (unsigned long)ka->_sa_handler; /* what we enter NOW */
- cpu_set_gpr(env, 9, (unsigned long)return_ip); /* what we enter LATER
*/
- cpu_set_gpr(env, 3, (unsigned long)sig); /* arg 1: signo */
- cpu_set_gpr(env, 4, (unsigned long)&frame->info); /* arg 2: (siginfo_t*)
*/
- cpu_set_gpr(env, 5, (unsigned long)&frame->uc); /* arg 3: ucontext */
-
- /* actually move the usp to reflect the stacked frame */
- cpu_set_gpr(env, 1, (unsigned long)frame);
-
- return;
-
-give_sigsegv:
- unlock_user_struct(frame, frame_addr, 1);
- force_sigsegv(sig);
-}
-
-long do_sigreturn(CPUOpenRISCState *env)
-{
- trace_user_do_sigreturn(env, 0);
- fprintf(stderr, "do_sigreturn: not implemented\n");
- return -TARGET_ENOSYS;
-}
-
-long do_rt_sigreturn(CPUOpenRISCState *env)
-{
- trace_user_do_rt_sigreturn(env, 0);
- fprintf(stderr, "do_rt_sigreturn: not implemented\n");
- return -TARGET_ENOSYS;
-}
-/* TARGET_OPENRISC */
-
-#elif defined(TARGET_S390X)
-
-#define __NUM_GPRS 16
-#define __NUM_FPRS 16
-#define __NUM_ACRS 16
-
-#define S390_SYSCALL_SIZE 2
-#define __SIGNAL_FRAMESIZE 160 /* FIXME: 31-bit mode -> 96 */
-
-#define _SIGCONTEXT_NSIG 64
-#define _SIGCONTEXT_NSIG_BPW 64 /* FIXME: 31-bit mode -> 32 */
-#define _SIGCONTEXT_NSIG_WORDS (_SIGCONTEXT_NSIG / _SIGCONTEXT_NSIG_BPW)
-#define _SIGMASK_COPY_SIZE (sizeof(unsigned long)*_SIGCONTEXT_NSIG_WORDS)
-#define PSW_ADDR_AMODE 0x0000000000000000UL /* 0x80000000UL for
31-bit */
-#define S390_SYSCALL_OPCODE ((uint16_t)0x0a00)
-
-typedef struct {
- target_psw_t psw;
- target_ulong gprs[__NUM_GPRS];
- unsigned int acrs[__NUM_ACRS];
-} target_s390_regs_common;
-
-typedef struct {
- unsigned int fpc;
- double fprs[__NUM_FPRS];
-} target_s390_fp_regs;
-
-typedef struct {
- target_s390_regs_common regs;
- target_s390_fp_regs fpregs;
-} target_sigregs;
-
-struct target_sigcontext {
- target_ulong oldmask[_SIGCONTEXT_NSIG_WORDS];
- target_sigregs *sregs;
-};
-
-typedef struct {
- uint8_t callee_used_stack[__SIGNAL_FRAMESIZE];
- struct target_sigcontext sc;
- target_sigregs sregs;
- int signo;
- uint8_t retcode[S390_SYSCALL_SIZE];
-} sigframe;
-
-struct target_ucontext {
- target_ulong tuc_flags;
- struct target_ucontext *tuc_link;
- target_stack_t tuc_stack;
- target_sigregs tuc_mcontext;
- target_sigset_t tuc_sigmask; /* mask last for extensibility */
-};
-
-typedef struct {
- uint8_t callee_used_stack[__SIGNAL_FRAMESIZE];
- uint8_t retcode[S390_SYSCALL_SIZE];
- struct target_siginfo info;
- struct target_ucontext uc;
-} rt_sigframe;
-
-static inline abi_ulong
-get_sigframe(struct target_sigaction *ka, CPUS390XState *env, size_t
frame_size)
-{
- abi_ulong sp;
-
- /* Default to using normal stack */
- sp = env->regs[15];
-
- /* This is the X/Open sanctioned signal stack switching. */
- if (ka->sa_flags & TARGET_SA_ONSTACK) {
- if (!sas_ss_flags(sp)) {
- sp = target_sigaltstack_used.ss_sp +
- target_sigaltstack_used.ss_size;
- }
- }
-
- /* This is the legacy signal stack switching. */
- else if (/* FIXME !user_mode(regs) */ 0 &&
- !(ka->sa_flags & TARGET_SA_RESTORER) &&
- ka->sa_restorer) {
- sp = (abi_ulong) ka->sa_restorer;
- }
-
- return (sp - frame_size) & -8ul;
-}
-
-static void save_sigregs(CPUS390XState *env, target_sigregs *sregs)
-{
- int i;
- //save_access_regs(current->thread.acrs); FIXME
-
- /* Copy a 'clean' PSW mask to the user to avoid leaking
- information about whether PER is currently on. */
- __put_user(env->psw.mask, &sregs->regs.psw.mask);
- __put_user(env->psw.addr, &sregs->regs.psw.addr);
- for (i = 0; i < 16; i++) {
- __put_user(env->regs[i], &sregs->regs.gprs[i]);
- }
- for (i = 0; i < 16; i++) {
- __put_user(env->aregs[i], &sregs->regs.acrs[i]);
- }
- /*
- * We have to store the fp registers to current->thread.fp_regs
- * to merge them with the emulated registers.
- */
- //save_fp_regs(¤t->thread.fp_regs); FIXME
- for (i = 0; i < 16; i++) {
- __put_user(get_freg(env, i)->ll, &sregs->fpregs.fprs[i]);
- }
-}
-
-static void setup_frame(int sig, struct target_sigaction *ka,
- target_sigset_t *set, CPUS390XState *env)
-{
- sigframe *frame;
- abi_ulong frame_addr;
-
- frame_addr = get_sigframe(ka, env, sizeof(*frame));
- trace_user_setup_frame(env, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
- goto give_sigsegv;
- }
-
- __put_user(set->sig[0], &frame->sc.oldmask[0]);
-
- save_sigregs(env, &frame->sregs);
-
- __put_user((abi_ulong)(unsigned long)&frame->sregs,
- (abi_ulong *)&frame->sc.sregs);
-
- /* Set up to return from userspace. If provided, use a stub
- already in userspace. */
- if (ka->sa_flags & TARGET_SA_RESTORER) {
- env->regs[14] = (unsigned long)
- ka->sa_restorer | PSW_ADDR_AMODE;
- } else {
- env->regs[14] = (frame_addr + offsetof(sigframe, retcode))
- | PSW_ADDR_AMODE;
- __put_user(S390_SYSCALL_OPCODE | TARGET_NR_sigreturn,
- (uint16_t *)(frame->retcode));
- }
-
- /* Set up backchain. */
- __put_user(env->regs[15], (abi_ulong *) frame);
-
- /* Set up registers for signal handler */
- env->regs[15] = frame_addr;
- env->psw.addr = (target_ulong) ka->_sa_handler | PSW_ADDR_AMODE;
-
- env->regs[2] = sig; //map_signal(sig);
- env->regs[3] = frame_addr += offsetof(typeof(*frame), sc);
-
- /* We forgot to include these in the sigcontext.
- To avoid breaking binary compatibility, they are passed as args. */
- env->regs[4] = 0; // FIXME: no clue... current->thread.trap_no;
- env->regs[5] = 0; // FIXME: no clue... current->thread.prot_addr;
-
- /* Place signal number on stack to allow backtrace from handler. */
- __put_user(env->regs[2], &frame->signo);
- unlock_user_struct(frame, frame_addr, 1);
- return;
-
-give_sigsegv:
- force_sigsegv(sig);
-}
-
-static void setup_rt_frame(int sig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPUS390XState *env)
-{
- int i;
- rt_sigframe *frame;
- abi_ulong frame_addr;
-
- frame_addr = get_sigframe(ka, env, sizeof *frame);
- trace_user_setup_rt_frame(env, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
- goto give_sigsegv;
- }
-
- tswap_siginfo(&frame->info, info);
-
- /* Create the ucontext. */
- __put_user(0, &frame->uc.tuc_flags);
- __put_user((abi_ulong)0, (abi_ulong *)&frame->uc.tuc_link);
- __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
- __put_user(sas_ss_flags(get_sp_from_cpustate(env)),
- &frame->uc.tuc_stack.ss_flags);
- __put_user(target_sigaltstack_used.ss_size, &frame->uc.tuc_stack.ss_size);
- save_sigregs(env, &frame->uc.tuc_mcontext);
- for (i = 0; i < TARGET_NSIG_WORDS; i++) {
- __put_user((abi_ulong)set->sig[i],
- (abi_ulong *)&frame->uc.tuc_sigmask.sig[i]);
- }
-
- /* Set up to return from userspace. If provided, use a stub
- already in userspace. */
- if (ka->sa_flags & TARGET_SA_RESTORER) {
- env->regs[14] = (unsigned long) ka->sa_restorer | PSW_ADDR_AMODE;
- } else {
- env->regs[14] = (unsigned long) frame->retcode | PSW_ADDR_AMODE;
- __put_user(S390_SYSCALL_OPCODE | TARGET_NR_rt_sigreturn,
- (uint16_t *)(frame->retcode));
- }
-
- /* Set up backchain. */
- __put_user(env->regs[15], (abi_ulong *) frame);
-
- /* Set up registers for signal handler */
- env->regs[15] = frame_addr;
- env->psw.addr = (target_ulong) ka->_sa_handler | PSW_ADDR_AMODE;
-
- env->regs[2] = sig; //map_signal(sig);
- env->regs[3] = frame_addr + offsetof(typeof(*frame), info);
- env->regs[4] = frame_addr + offsetof(typeof(*frame), uc);
- return;
-
-give_sigsegv:
- force_sigsegv(sig);
-}
-
-static int
-restore_sigregs(CPUS390XState *env, target_sigregs *sc)
-{
- int err = 0;
- int i;
-
- for (i = 0; i < 16; i++) {
- __get_user(env->regs[i], &sc->regs.gprs[i]);
- }
-
- __get_user(env->psw.mask, &sc->regs.psw.mask);
- trace_user_s390x_restore_sigregs(env, (unsigned long
long)sc->regs.psw.addr,
- (unsigned long long)env->psw.addr);
- __get_user(env->psw.addr, &sc->regs.psw.addr);
- /* FIXME: 31-bit -> | PSW_ADDR_AMODE */
-
- for (i = 0; i < 16; i++) {
- __get_user(env->aregs[i], &sc->regs.acrs[i]);
- }
- for (i = 0; i < 16; i++) {
- __get_user(get_freg(env, i)->ll, &sc->fpregs.fprs[i]);
- }
-
- return err;
-}
-
-long do_sigreturn(CPUS390XState *env)
-{
- sigframe *frame;
- abi_ulong frame_addr = env->regs[15];
- target_sigset_t target_set;
- sigset_t set;
-
- trace_user_do_sigreturn(env, frame_addr);
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
- goto badframe;
- }
- __get_user(target_set.sig[0], &frame->sc.oldmask[0]);
-
- target_to_host_sigset_internal(&set, &target_set);
- set_sigmask(&set); /* ~_BLOCKABLE? */
-
- if (restore_sigregs(env, &frame->sregs)) {
- goto badframe;
- }
-
- unlock_user_struct(frame, frame_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-
-badframe:
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-
-long do_rt_sigreturn(CPUS390XState *env)
-{
- rt_sigframe *frame;
- abi_ulong frame_addr = env->regs[15];
- sigset_t set;
-
- trace_user_do_rt_sigreturn(env, frame_addr);
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
- goto badframe;
- }
- target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
-
- set_sigmask(&set); /* ~_BLOCKABLE? */
-
- if (restore_sigregs(env, &frame->uc.tuc_mcontext)) {
- goto badframe;
- }
-
- if (do_sigaltstack(frame_addr + offsetof(rt_sigframe, uc.tuc_stack), 0,
- get_sp_from_cpustate(env)) == -EFAULT) {
- goto badframe;
- }
- unlock_user_struct(frame, frame_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-
-badframe:
- unlock_user_struct(frame, frame_addr, 0);
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-
-#elif defined(TARGET_PPC)
-
-/* Size of dummy stack frame allocated when calling signal handler.
- See arch/powerpc/include/asm/ptrace.h. */
-#if defined(TARGET_PPC64)
-#define SIGNAL_FRAMESIZE 128
-#else
-#define SIGNAL_FRAMESIZE 64
-#endif
-
-/* See arch/powerpc/include/asm/ucontext.h. Only used for 32-bit PPC;
- on 64-bit PPC, sigcontext and mcontext are one and the same. */
-struct target_mcontext {
- target_ulong mc_gregs[48];
- /* Includes fpscr. */
- uint64_t mc_fregs[33];
-#if defined(TARGET_PPC64)
- /* Pointer to the vector regs */
- target_ulong v_regs;
-#else
- target_ulong mc_pad[2];
-#endif
- /* We need to handle Altivec and SPE at the same time, which no
- kernel needs to do. Fortunately, the kernel defines this bit to
- be Altivec-register-large all the time, rather than trying to
- twiddle it based on the specific platform. */
- union {
- /* SPE vector registers. One extra for SPEFSCR. */
- uint32_t spe[33];
- /* Altivec vector registers. The packing of VSCR and VRSAVE
- varies depending on whether we're PPC64 or not: PPC64 splits
- them apart; PPC32 stuffs them together.
- We also need to account for the VSX registers on PPC64
- */
-#if defined(TARGET_PPC64)
-#define QEMU_NVRREG (34 + 16)
- /* On ppc64, this mcontext structure is naturally *unaligned*,
- * or rather it is aligned on a 8 bytes boundary but not on
- * a 16 bytes one. This pad fixes it up. This is also why the
- * vector regs are referenced by the v_regs pointer above so
- * any amount of padding can be added here
- */
- target_ulong pad;
-#else
- /* On ppc32, we are already aligned to 16 bytes */
-#define QEMU_NVRREG 33
-#endif
- /* We cannot use ppc_avr_t here as we do *not* want the implied
- * 16-bytes alignment that would result from it. This would have
- * the effect of making the whole struct target_mcontext aligned
- * which breaks the layout of struct target_ucontext on ppc64.
- */
- uint64_t altivec[QEMU_NVRREG][2];
-#undef QEMU_NVRREG
- } mc_vregs;
-};
-
-/* See arch/powerpc/include/asm/sigcontext.h. */
-struct target_sigcontext {
- target_ulong _unused[4];
- int32_t signal;
-#if defined(TARGET_PPC64)
- int32_t pad0;
-#endif
- target_ulong handler;
- target_ulong oldmask;
- target_ulong regs; /* struct pt_regs __user * */
-#if defined(TARGET_PPC64)
- struct target_mcontext mcontext;
-#endif
-};
-
-/* Indices for target_mcontext.mc_gregs, below.
- See arch/powerpc/include/asm/ptrace.h for details. */
-enum {
- TARGET_PT_R0 = 0,
- TARGET_PT_R1 = 1,
- TARGET_PT_R2 = 2,
- TARGET_PT_R3 = 3,
- TARGET_PT_R4 = 4,
- TARGET_PT_R5 = 5,
- TARGET_PT_R6 = 6,
- TARGET_PT_R7 = 7,
- TARGET_PT_R8 = 8,
- TARGET_PT_R9 = 9,
- TARGET_PT_R10 = 10,
- TARGET_PT_R11 = 11,
- TARGET_PT_R12 = 12,
- TARGET_PT_R13 = 13,
- TARGET_PT_R14 = 14,
- TARGET_PT_R15 = 15,
- TARGET_PT_R16 = 16,
- TARGET_PT_R17 = 17,
- TARGET_PT_R18 = 18,
- TARGET_PT_R19 = 19,
- TARGET_PT_R20 = 20,
- TARGET_PT_R21 = 21,
- TARGET_PT_R22 = 22,
- TARGET_PT_R23 = 23,
- TARGET_PT_R24 = 24,
- TARGET_PT_R25 = 25,
- TARGET_PT_R26 = 26,
- TARGET_PT_R27 = 27,
- TARGET_PT_R28 = 28,
- TARGET_PT_R29 = 29,
- TARGET_PT_R30 = 30,
- TARGET_PT_R31 = 31,
- TARGET_PT_NIP = 32,
- TARGET_PT_MSR = 33,
- TARGET_PT_ORIG_R3 = 34,
- TARGET_PT_CTR = 35,
- TARGET_PT_LNK = 36,
- TARGET_PT_XER = 37,
- TARGET_PT_CCR = 38,
- /* Yes, there are two registers with #39. One is 64-bit only. */
- TARGET_PT_MQ = 39,
- TARGET_PT_SOFTE = 39,
- TARGET_PT_TRAP = 40,
- TARGET_PT_DAR = 41,
- TARGET_PT_DSISR = 42,
- TARGET_PT_RESULT = 43,
- TARGET_PT_REGS_COUNT = 44
-};
-
-
-struct target_ucontext {
- target_ulong tuc_flags;
- target_ulong tuc_link; /* ucontext_t __user * */
- struct target_sigaltstack tuc_stack;
-#if !defined(TARGET_PPC64)
- int32_t tuc_pad[7];
- target_ulong tuc_regs; /* struct mcontext __user *
- points to uc_mcontext field */
-#endif
- target_sigset_t tuc_sigmask;
-#if defined(TARGET_PPC64)
- target_sigset_t unused[15]; /* Allow for uc_sigmask growth */
- struct target_sigcontext tuc_sigcontext;
-#else
- int32_t tuc_maskext[30];
- int32_t tuc_pad2[3];
- struct target_mcontext tuc_mcontext;
-#endif
-};
-
-/* See arch/powerpc/kernel/signal_32.c. */
-struct target_sigframe {
- struct target_sigcontext sctx;
- struct target_mcontext mctx;
- int32_t abigap[56];
-};
-
-#if defined(TARGET_PPC64)
-
-#define TARGET_TRAMP_SIZE 6
-
-struct target_rt_sigframe {
- /* sys_rt_sigreturn requires the ucontext be the first field */
- struct target_ucontext uc;
- target_ulong _unused[2];
- uint32_t trampoline[TARGET_TRAMP_SIZE];
- target_ulong pinfo; /* struct siginfo __user * */
- target_ulong puc; /* void __user * */
- struct target_siginfo info;
- /* 64 bit ABI allows for 288 bytes below sp before decrementing it. */
- char abigap[288];
-} __attribute__((aligned(16)));
-
-#else
-
-struct target_rt_sigframe {
- struct target_siginfo info;
- struct target_ucontext uc;
- int32_t abigap[56];
-};
-
-#endif
-
-#if defined(TARGET_PPC64)
-
-struct target_func_ptr {
- target_ulong entry;
- target_ulong toc;
-};
-
-#endif
-
-/* We use the mc_pad field for the signal return trampoline. */
-#define tramp mc_pad
-
-/* See arch/powerpc/kernel/signal.c. */
-static target_ulong get_sigframe(struct target_sigaction *ka,
- CPUPPCState *env,
- int frame_size)
-{
- target_ulong oldsp;
-
- oldsp = env->gpr[1];
-
- if ((ka->sa_flags & TARGET_SA_ONSTACK) &&
- (sas_ss_flags(oldsp) == 0)) {
- oldsp = (target_sigaltstack_used.ss_sp
- + target_sigaltstack_used.ss_size);
- }
-
- return (oldsp - frame_size) & ~0xFUL;
-}
-
-#if ((defined(TARGET_WORDS_BIGENDIAN) && defined(HOST_WORDS_BIGENDIAN)) || \
- (!defined(HOST_WORDS_BIGENDIAN) && !defined(TARGET_WORDS_BIGENDIAN)))
-#define PPC_VEC_HI 0
-#define PPC_VEC_LO 1
-#else
-#define PPC_VEC_HI 1
-#define PPC_VEC_LO 0
-#endif
-
-
-static void save_user_regs(CPUPPCState *env, struct target_mcontext *frame)
-{
- target_ulong msr = env->msr;
- int i;
- target_ulong ccr = 0;
-
- /* In general, the kernel attempts to be intelligent about what it
- needs to save for Altivec/FP/SPE registers. We don't care that
- much, so we just go ahead and save everything. */
-
- /* Save general registers. */
- for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
- __put_user(env->gpr[i], &frame->mc_gregs[i]);
- }
- __put_user(env->nip, &frame->mc_gregs[TARGET_PT_NIP]);
- __put_user(env->ctr, &frame->mc_gregs[TARGET_PT_CTR]);
- __put_user(env->lr, &frame->mc_gregs[TARGET_PT_LNK]);
- __put_user(env->xer, &frame->mc_gregs[TARGET_PT_XER]);
-
- for (i = 0; i < ARRAY_SIZE(env->crf); i++) {
- ccr |= env->crf[i] << (32 - ((i + 1) * 4));
- }
- __put_user(ccr, &frame->mc_gregs[TARGET_PT_CCR]);
-
- /* Save Altivec registers if necessary. */
- if (env->insns_flags & PPC_ALTIVEC) {
- uint32_t *vrsave;
- for (i = 0; i < ARRAY_SIZE(env->avr); i++) {
- ppc_avr_t *avr = &env->avr[i];
- ppc_avr_t *vreg = (ppc_avr_t *)&frame->mc_vregs.altivec[i];
-
- __put_user(avr->u64[PPC_VEC_HI], &vreg->u64[0]);
- __put_user(avr->u64[PPC_VEC_LO], &vreg->u64[1]);
- }
- /* Set MSR_VR in the saved MSR value to indicate that
- frame->mc_vregs contains valid data. */
- msr |= MSR_VR;
-#if defined(TARGET_PPC64)
- vrsave = (uint32_t *)&frame->mc_vregs.altivec[33];
- /* 64-bit needs to put a pointer to the vectors in the frame */
- __put_user(h2g(frame->mc_vregs.altivec), &frame->v_regs);
-#else
- vrsave = (uint32_t *)&frame->mc_vregs.altivec[32];
-#endif
- __put_user((uint32_t)env->spr[SPR_VRSAVE], vrsave);
- }
-
- /* Save VSX second halves */
- if (env->insns_flags2 & PPC2_VSX) {
- uint64_t *vsregs = (uint64_t *)&frame->mc_vregs.altivec[34];
- for (i = 0; i < ARRAY_SIZE(env->vsr); i++) {
- __put_user(env->vsr[i], &vsregs[i]);
- }
- }
-
- /* Save floating point registers. */
- if (env->insns_flags & PPC_FLOAT) {
- for (i = 0; i < ARRAY_SIZE(env->fpr); i++) {
- __put_user(env->fpr[i], &frame->mc_fregs[i]);
- }
- __put_user((uint64_t) env->fpscr, &frame->mc_fregs[32]);
- }
-
- /* Save SPE registers. The kernel only saves the high half. */
- if (env->insns_flags & PPC_SPE) {
-#if defined(TARGET_PPC64)
- for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
- __put_user(env->gpr[i] >> 32, &frame->mc_vregs.spe[i]);
- }
-#else
- for (i = 0; i < ARRAY_SIZE(env->gprh); i++) {
- __put_user(env->gprh[i], &frame->mc_vregs.spe[i]);
- }
-#endif
- /* Set MSR_SPE in the saved MSR value to indicate that
- frame->mc_vregs contains valid data. */
- msr |= MSR_SPE;
- __put_user(env->spe_fscr, &frame->mc_vregs.spe[32]);
- }
-
- /* Store MSR. */
- __put_user(msr, &frame->mc_gregs[TARGET_PT_MSR]);
-}
-
-static void encode_trampoline(int sigret, uint32_t *tramp)
-{
- /* Set up the sigreturn trampoline: li r0,sigret; sc. */
- if (sigret) {
- __put_user(0x38000000 | sigret, &tramp[0]);
- __put_user(0x44000002, &tramp[1]);
- }
-}
-
-static void restore_user_regs(CPUPPCState *env,
- struct target_mcontext *frame, int sig)
-{
- target_ulong save_r2 = 0;
- target_ulong msr;
- target_ulong ccr;
-
- int i;
-
- if (!sig) {
- save_r2 = env->gpr[2];
- }
-
- /* Restore general registers. */
- for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
- __get_user(env->gpr[i], &frame->mc_gregs[i]);
- }
- __get_user(env->nip, &frame->mc_gregs[TARGET_PT_NIP]);
- __get_user(env->ctr, &frame->mc_gregs[TARGET_PT_CTR]);
- __get_user(env->lr, &frame->mc_gregs[TARGET_PT_LNK]);
- __get_user(env->xer, &frame->mc_gregs[TARGET_PT_XER]);
- __get_user(ccr, &frame->mc_gregs[TARGET_PT_CCR]);
-
- for (i = 0; i < ARRAY_SIZE(env->crf); i++) {
- env->crf[i] = (ccr >> (32 - ((i + 1) * 4))) & 0xf;
- }
-
- if (!sig) {
- env->gpr[2] = save_r2;
- }
- /* Restore MSR. */
- __get_user(msr, &frame->mc_gregs[TARGET_PT_MSR]);
-
- /* If doing signal return, restore the previous little-endian mode. */
- if (sig)
- env->msr = (env->msr & ~(1ull << MSR_LE)) | (msr & (1ull << MSR_LE));
-
- /* Restore Altivec registers if necessary. */
- if (env->insns_flags & PPC_ALTIVEC) {
- ppc_avr_t *v_regs;
- uint32_t *vrsave;
-#if defined(TARGET_PPC64)
- uint64_t v_addr;
- /* 64-bit needs to recover the pointer to the vectors from the frame */
- __get_user(v_addr, &frame->v_regs);
- v_regs = g2h(v_addr);
-#else
- v_regs = (ppc_avr_t *)frame->mc_vregs.altivec;
-#endif
- for (i = 0; i < ARRAY_SIZE(env->avr); i++) {
- ppc_avr_t *avr = &env->avr[i];
- ppc_avr_t *vreg = &v_regs[i];
-
- __get_user(avr->u64[PPC_VEC_HI], &vreg->u64[0]);
- __get_user(avr->u64[PPC_VEC_LO], &vreg->u64[1]);
- }
- /* Set MSR_VEC in the saved MSR value to indicate that
- frame->mc_vregs contains valid data. */
-#if defined(TARGET_PPC64)
- vrsave = (uint32_t *)&v_regs[33];
-#else
- vrsave = (uint32_t *)&v_regs[32];
-#endif
- __get_user(env->spr[SPR_VRSAVE], vrsave);
- }
-
- /* Restore VSX second halves */
- if (env->insns_flags2 & PPC2_VSX) {
- uint64_t *vsregs = (uint64_t *)&frame->mc_vregs.altivec[34];
- for (i = 0; i < ARRAY_SIZE(env->vsr); i++) {
- __get_user(env->vsr[i], &vsregs[i]);
- }
- }
-
- /* Restore floating point registers. */
- if (env->insns_flags & PPC_FLOAT) {
- uint64_t fpscr;
- for (i = 0; i < ARRAY_SIZE(env->fpr); i++) {
- __get_user(env->fpr[i], &frame->mc_fregs[i]);
- }
- __get_user(fpscr, &frame->mc_fregs[32]);
- env->fpscr = (uint32_t) fpscr;
- }
-
- /* Save SPE registers. The kernel only saves the high half. */
- if (env->insns_flags & PPC_SPE) {
-#if defined(TARGET_PPC64)
- for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
- uint32_t hi;
-
- __get_user(hi, &frame->mc_vregs.spe[i]);
- env->gpr[i] = ((uint64_t)hi << 32) | ((uint32_t) env->gpr[i]);
- }
-#else
- for (i = 0; i < ARRAY_SIZE(env->gprh); i++) {
- __get_user(env->gprh[i], &frame->mc_vregs.spe[i]);
- }
-#endif
- __get_user(env->spe_fscr, &frame->mc_vregs.spe[32]);
- }
-}
-
-#if !defined(TARGET_PPC64)
-static void setup_frame(int sig, struct target_sigaction *ka,
- target_sigset_t *set, CPUPPCState *env)
-{
- struct target_sigframe *frame;
- struct target_sigcontext *sc;
- target_ulong frame_addr, newsp;
- int err = 0;
-
- frame_addr = get_sigframe(ka, env, sizeof(*frame));
- trace_user_setup_frame(env, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
- goto sigsegv;
- sc = &frame->sctx;
-
- __put_user(ka->_sa_handler, &sc->handler);
- __put_user(set->sig[0], &sc->oldmask);
- __put_user(set->sig[1], &sc->_unused[3]);
- __put_user(h2g(&frame->mctx), &sc->regs);
- __put_user(sig, &sc->signal);
-
- /* Save user regs. */
- save_user_regs(env, &frame->mctx);
-
- /* Construct the trampoline code on the stack. */
- encode_trampoline(TARGET_NR_sigreturn, (uint32_t *)&frame->mctx.tramp);
-
- /* The kernel checks for the presence of a VDSO here. We don't
- emulate a vdso, so use a sigreturn system call. */
- env->lr = (target_ulong) h2g(frame->mctx.tramp);
-
- /* Turn off all fp exceptions. */
- env->fpscr = 0;
-
- /* Create a stack frame for the caller of the handler. */
- newsp = frame_addr - SIGNAL_FRAMESIZE;
- err |= put_user(env->gpr[1], newsp, target_ulong);
-
- if (err)
- goto sigsegv;
-
- /* Set up registers for signal handler. */
- env->gpr[1] = newsp;
- env->gpr[3] = sig;
- env->gpr[4] = frame_addr + offsetof(struct target_sigframe, sctx);
-
- env->nip = (target_ulong) ka->_sa_handler;
-
- /* Signal handlers are entered in big-endian mode. */
- env->msr &= ~(1ull << MSR_LE);
-
- unlock_user_struct(frame, frame_addr, 1);
- return;
-
-sigsegv:
- unlock_user_struct(frame, frame_addr, 1);
- force_sigsegv(sig);
-}
-#endif /* !defined(TARGET_PPC64) */
-
-static void setup_rt_frame(int sig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPUPPCState *env)
-{
- struct target_rt_sigframe *rt_sf;
- uint32_t *trampptr = 0;
- struct target_mcontext *mctx = 0;
- target_ulong rt_sf_addr, newsp = 0;
- int i, err = 0;
-#if defined(TARGET_PPC64)
- struct target_sigcontext *sc = 0;
- struct image_info *image = ((TaskState *)thread_cpu->opaque)->info;
-#endif
-
- rt_sf_addr = get_sigframe(ka, env, sizeof(*rt_sf));
- if (!lock_user_struct(VERIFY_WRITE, rt_sf, rt_sf_addr, 1))
- goto sigsegv;
-
- tswap_siginfo(&rt_sf->info, info);
-
- __put_user(0, &rt_sf->uc.tuc_flags);
- __put_user(0, &rt_sf->uc.tuc_link);
- __put_user((target_ulong)target_sigaltstack_used.ss_sp,
- &rt_sf->uc.tuc_stack.ss_sp);
- __put_user(sas_ss_flags(env->gpr[1]),
- &rt_sf->uc.tuc_stack.ss_flags);
- __put_user(target_sigaltstack_used.ss_size,
- &rt_sf->uc.tuc_stack.ss_size);
-#if !defined(TARGET_PPC64)
- __put_user(h2g (&rt_sf->uc.tuc_mcontext),
- &rt_sf->uc.tuc_regs);
-#endif
- for(i = 0; i < TARGET_NSIG_WORDS; i++) {
- __put_user(set->sig[i], &rt_sf->uc.tuc_sigmask.sig[i]);
- }
-
-#if defined(TARGET_PPC64)
- mctx = &rt_sf->uc.tuc_sigcontext.mcontext;
- trampptr = &rt_sf->trampoline[0];
-
- sc = &rt_sf->uc.tuc_sigcontext;
- __put_user(h2g(mctx), &sc->regs);
- __put_user(sig, &sc->signal);
-#else
- mctx = &rt_sf->uc.tuc_mcontext;
- trampptr = (uint32_t *)&rt_sf->uc.tuc_mcontext.tramp;
-#endif
-
- save_user_regs(env, mctx);
- encode_trampoline(TARGET_NR_rt_sigreturn, trampptr);
-
- /* The kernel checks for the presence of a VDSO here. We don't
- emulate a vdso, so use a sigreturn system call. */
- env->lr = (target_ulong) h2g(trampptr);
-
- /* Turn off all fp exceptions. */
- env->fpscr = 0;
-
- /* Create a stack frame for the caller of the handler. */
- newsp = rt_sf_addr - (SIGNAL_FRAMESIZE + 16);
- err |= put_user(env->gpr[1], newsp, target_ulong);
-
- if (err)
- goto sigsegv;
-
- /* Set up registers for signal handler. */
- env->gpr[1] = newsp;
- env->gpr[3] = (target_ulong) sig;
- env->gpr[4] = (target_ulong) h2g(&rt_sf->info);
- env->gpr[5] = (target_ulong) h2g(&rt_sf->uc);
- env->gpr[6] = (target_ulong) h2g(rt_sf);
-
-#if defined(TARGET_PPC64)
- if (get_ppc64_abi(image) < 2) {
- /* ELFv1 PPC64 function pointers are pointers to OPD entries. */
- struct target_func_ptr *handler =
- (struct target_func_ptr *)g2h(ka->_sa_handler);
- env->nip = tswapl(handler->entry);
- env->gpr[2] = tswapl(handler->toc);
- } else {
- /* ELFv2 PPC64 function pointers are entry points, but R12
- * must also be set */
- env->nip = tswapl((target_ulong) ka->_sa_handler);
- env->gpr[12] = env->nip;
- }
-#else
- env->nip = (target_ulong) ka->_sa_handler;
-#endif
-
- /* Signal handlers are entered in big-endian mode. */
- env->msr &= ~(1ull << MSR_LE);
-
- unlock_user_struct(rt_sf, rt_sf_addr, 1);
- return;
-
-sigsegv:
- unlock_user_struct(rt_sf, rt_sf_addr, 1);
- force_sigsegv(sig);
-
-}
-
-#if !defined(TARGET_PPC64)
-long do_sigreturn(CPUPPCState *env)
-{
- struct target_sigcontext *sc = NULL;
- struct target_mcontext *sr = NULL;
- target_ulong sr_addr = 0, sc_addr;
- sigset_t blocked;
- target_sigset_t set;
-
- sc_addr = env->gpr[1] + SIGNAL_FRAMESIZE;
- if (!lock_user_struct(VERIFY_READ, sc, sc_addr, 1))
- goto sigsegv;
-
-#if defined(TARGET_PPC64)
- set.sig[0] = sc->oldmask + ((uint64_t)(sc->_unused[3]) << 32);
-#else
- __get_user(set.sig[0], &sc->oldmask);
- __get_user(set.sig[1], &sc->_unused[3]);
-#endif
- target_to_host_sigset_internal(&blocked, &set);
- set_sigmask(&blocked);
-
- __get_user(sr_addr, &sc->regs);
- if (!lock_user_struct(VERIFY_READ, sr, sr_addr, 1))
- goto sigsegv;
- restore_user_regs(env, sr, 1);
-
- unlock_user_struct(sr, sr_addr, 1);
- unlock_user_struct(sc, sc_addr, 1);
- return -TARGET_QEMU_ESIGRETURN;
-
-sigsegv:
- unlock_user_struct(sr, sr_addr, 1);
- unlock_user_struct(sc, sc_addr, 1);
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-#endif /* !defined(TARGET_PPC64) */
-
-/* See arch/powerpc/kernel/signal_32.c. */
-static int do_setcontext(struct target_ucontext *ucp, CPUPPCState *env, int
sig)
-{
- struct target_mcontext *mcp;
- target_ulong mcp_addr;
- sigset_t blocked;
- target_sigset_t set;
-
- if (copy_from_user(&set, h2g(ucp) + offsetof(struct target_ucontext,
tuc_sigmask),
- sizeof (set)))
- return 1;
-
-#if defined(TARGET_PPC64)
- mcp_addr = h2g(ucp) +
- offsetof(struct target_ucontext, tuc_sigcontext.mcontext);
-#else
- __get_user(mcp_addr, &ucp->tuc_regs);
-#endif
-
- if (!lock_user_struct(VERIFY_READ, mcp, mcp_addr, 1))
- return 1;
-
- target_to_host_sigset_internal(&blocked, &set);
- set_sigmask(&blocked);
- restore_user_regs(env, mcp, sig);
-
- unlock_user_struct(mcp, mcp_addr, 1);
- return 0;
-}
-
-long do_rt_sigreturn(CPUPPCState *env)
-{
- struct target_rt_sigframe *rt_sf = NULL;
- target_ulong rt_sf_addr;
-
- rt_sf_addr = env->gpr[1] + SIGNAL_FRAMESIZE + 16;
- if (!lock_user_struct(VERIFY_READ, rt_sf, rt_sf_addr, 1))
- goto sigsegv;
-
- if (do_setcontext(&rt_sf->uc, env, 1))
- goto sigsegv;
-
- do_sigaltstack(rt_sf_addr
- + offsetof(struct target_rt_sigframe, uc.tuc_stack),
- 0, env->gpr[1]);
-
- unlock_user_struct(rt_sf, rt_sf_addr, 1);
- return -TARGET_QEMU_ESIGRETURN;
-
-sigsegv:
- unlock_user_struct(rt_sf, rt_sf_addr, 1);
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-
-#elif defined(TARGET_M68K)
-
-struct target_sigcontext {
- abi_ulong sc_mask;
- abi_ulong sc_usp;
- abi_ulong sc_d0;
- abi_ulong sc_d1;
- abi_ulong sc_a0;
- abi_ulong sc_a1;
- unsigned short sc_sr;
- abi_ulong sc_pc;
-};
-
-struct target_sigframe
-{
- abi_ulong pretcode;
- int sig;
- int code;
- abi_ulong psc;
- char retcode[8];
- abi_ulong extramask[TARGET_NSIG_WORDS-1];
- struct target_sigcontext sc;
-};
-
-typedef int target_greg_t;
-#define TARGET_NGREG 18
-typedef target_greg_t target_gregset_t[TARGET_NGREG];
-
-typedef struct target_fpregset {
- int f_fpcntl[3];
- int f_fpregs[8*3];
-} target_fpregset_t;
-
-struct target_mcontext {
- int version;
- target_gregset_t gregs;
- target_fpregset_t fpregs;
-};
-
-#define TARGET_MCONTEXT_VERSION 2
-
-struct target_ucontext {
- abi_ulong tuc_flags;
- abi_ulong tuc_link;
- target_stack_t tuc_stack;
- struct target_mcontext tuc_mcontext;
- abi_long tuc_filler[80];
- target_sigset_t tuc_sigmask;
-};
-
-struct target_rt_sigframe
-{
- abi_ulong pretcode;
- int sig;
- abi_ulong pinfo;
- abi_ulong puc;
- char retcode[8];
- struct target_siginfo info;
- struct target_ucontext uc;
-};
-
-static void setup_sigcontext(struct target_sigcontext *sc, CPUM68KState *env,
- abi_ulong mask)
-{
- uint32_t sr = (env->sr & 0xff00) | cpu_m68k_get_ccr(env);
- __put_user(mask, &sc->sc_mask);
- __put_user(env->aregs[7], &sc->sc_usp);
- __put_user(env->dregs[0], &sc->sc_d0);
- __put_user(env->dregs[1], &sc->sc_d1);
- __put_user(env->aregs[0], &sc->sc_a0);
- __put_user(env->aregs[1], &sc->sc_a1);
- __put_user(sr, &sc->sc_sr);
- __put_user(env->pc, &sc->sc_pc);
-}
-
-static void
-restore_sigcontext(CPUM68KState *env, struct target_sigcontext *sc)
-{
- int temp;
-
- __get_user(env->aregs[7], &sc->sc_usp);
- __get_user(env->dregs[0], &sc->sc_d0);
- __get_user(env->dregs[1], &sc->sc_d1);
- __get_user(env->aregs[0], &sc->sc_a0);
- __get_user(env->aregs[1], &sc->sc_a1);
- __get_user(env->pc, &sc->sc_pc);
- __get_user(temp, &sc->sc_sr);
- cpu_m68k_set_ccr(env, temp);
-}
-
-/*
- * Determine which stack to use..
- */
-static inline abi_ulong
-get_sigframe(struct target_sigaction *ka, CPUM68KState *regs,
- size_t frame_size)
-{
- unsigned long sp;
-
- sp = regs->aregs[7];
-
- /* This is the X/Open sanctioned signal stack switching. */
- if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) {
- sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
- }
-
- return ((sp - frame_size) & -8UL);
-}
-
-static void setup_frame(int sig, struct target_sigaction *ka,
- target_sigset_t *set, CPUM68KState *env)
-{
- struct target_sigframe *frame;
- abi_ulong frame_addr;
- abi_ulong retcode_addr;
- abi_ulong sc_addr;
- int i;
-
- frame_addr = get_sigframe(ka, env, sizeof *frame);
- trace_user_setup_frame(env, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
- goto give_sigsegv;
- }
-
- __put_user(sig, &frame->sig);
-
- sc_addr = frame_addr + offsetof(struct target_sigframe, sc);
- __put_user(sc_addr, &frame->psc);
-
- setup_sigcontext(&frame->sc, env, set->sig[0]);
-
- for(i = 1; i < TARGET_NSIG_WORDS; i++) {
- __put_user(set->sig[i], &frame->extramask[i - 1]);
- }
-
- /* Set up to return from userspace. */
-
- retcode_addr = frame_addr + offsetof(struct target_sigframe, retcode);
- __put_user(retcode_addr, &frame->pretcode);
-
- /* moveq #,d0; trap #0 */
-
- __put_user(0x70004e40 + (TARGET_NR_sigreturn << 16),
- (uint32_t *)(frame->retcode));
-
- /* Set up to return from userspace */
-
- env->aregs[7] = frame_addr;
- env->pc = ka->_sa_handler;
-
- unlock_user_struct(frame, frame_addr, 1);
- return;
-
-give_sigsegv:
- force_sigsegv(sig);
-}
-
-static inline void target_rt_save_fpu_state(struct target_ucontext *uc,
- CPUM68KState *env)
-{
- int i;
- target_fpregset_t *fpregs = &uc->tuc_mcontext.fpregs;
-
- __put_user(env->fpcr, &fpregs->f_fpcntl[0]);
- __put_user(env->fpsr, &fpregs->f_fpcntl[1]);
- /* fpiar is not emulated */
-
- for (i = 0; i < 8; i++) {
- uint32_t high = env->fregs[i].d.high << 16;
- __put_user(high, &fpregs->f_fpregs[i * 3]);
- __put_user(env->fregs[i].d.low,
- (uint64_t *)&fpregs->f_fpregs[i * 3 + 1]);
- }
-}
-
-static inline int target_rt_setup_ucontext(struct target_ucontext *uc,
- CPUM68KState *env)
-{
- target_greg_t *gregs = uc->tuc_mcontext.gregs;
- uint32_t sr = (env->sr & 0xff00) | cpu_m68k_get_ccr(env);
-
- __put_user(TARGET_MCONTEXT_VERSION, &uc->tuc_mcontext.version);
- __put_user(env->dregs[0], &gregs[0]);
- __put_user(env->dregs[1], &gregs[1]);
- __put_user(env->dregs[2], &gregs[2]);
- __put_user(env->dregs[3], &gregs[3]);
- __put_user(env->dregs[4], &gregs[4]);
- __put_user(env->dregs[5], &gregs[5]);
- __put_user(env->dregs[6], &gregs[6]);
- __put_user(env->dregs[7], &gregs[7]);
- __put_user(env->aregs[0], &gregs[8]);
- __put_user(env->aregs[1], &gregs[9]);
- __put_user(env->aregs[2], &gregs[10]);
- __put_user(env->aregs[3], &gregs[11]);
- __put_user(env->aregs[4], &gregs[12]);
- __put_user(env->aregs[5], &gregs[13]);
- __put_user(env->aregs[6], &gregs[14]);
- __put_user(env->aregs[7], &gregs[15]);
- __put_user(env->pc, &gregs[16]);
- __put_user(sr, &gregs[17]);
-
- target_rt_save_fpu_state(uc, env);
-
- return 0;
-}
-
-static inline void target_rt_restore_fpu_state(CPUM68KState *env,
- struct target_ucontext *uc)
-{
- int i;
- target_fpregset_t *fpregs = &uc->tuc_mcontext.fpregs;
- uint32_t fpcr;
-
- __get_user(fpcr, &fpregs->f_fpcntl[0]);
- cpu_m68k_set_fpcr(env, fpcr);
- __get_user(env->fpsr, &fpregs->f_fpcntl[1]);
- /* fpiar is not emulated */
-
- for (i = 0; i < 8; i++) {
- uint32_t high;
- __get_user(high, &fpregs->f_fpregs[i * 3]);
- env->fregs[i].d.high = high >> 16;
- __get_user(env->fregs[i].d.low,
- (uint64_t *)&fpregs->f_fpregs[i * 3 + 1]);
- }
-}
-
-static inline int target_rt_restore_ucontext(CPUM68KState *env,
- struct target_ucontext *uc)
-{
- int temp;
- target_greg_t *gregs = uc->tuc_mcontext.gregs;
-
- __get_user(temp, &uc->tuc_mcontext.version);
- if (temp != TARGET_MCONTEXT_VERSION)
- goto badframe;
-
- /* restore passed registers */
- __get_user(env->dregs[0], &gregs[0]);
- __get_user(env->dregs[1], &gregs[1]);
- __get_user(env->dregs[2], &gregs[2]);
- __get_user(env->dregs[3], &gregs[3]);
- __get_user(env->dregs[4], &gregs[4]);
- __get_user(env->dregs[5], &gregs[5]);
- __get_user(env->dregs[6], &gregs[6]);
- __get_user(env->dregs[7], &gregs[7]);
- __get_user(env->aregs[0], &gregs[8]);
- __get_user(env->aregs[1], &gregs[9]);
- __get_user(env->aregs[2], &gregs[10]);
- __get_user(env->aregs[3], &gregs[11]);
- __get_user(env->aregs[4], &gregs[12]);
- __get_user(env->aregs[5], &gregs[13]);
- __get_user(env->aregs[6], &gregs[14]);
- __get_user(env->aregs[7], &gregs[15]);
- __get_user(env->pc, &gregs[16]);
- __get_user(temp, &gregs[17]);
- cpu_m68k_set_ccr(env, temp);
-
- target_rt_restore_fpu_state(env, uc);
-
- return 0;
-
-badframe:
- return 1;
-}
-
-static void setup_rt_frame(int sig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPUM68KState *env)
-{
- struct target_rt_sigframe *frame;
- abi_ulong frame_addr;
- abi_ulong retcode_addr;
- abi_ulong info_addr;
- abi_ulong uc_addr;
- int err = 0;
- int i;
-
- frame_addr = get_sigframe(ka, env, sizeof *frame);
- trace_user_setup_rt_frame(env, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
- goto give_sigsegv;
- }
-
- __put_user(sig, &frame->sig);
-
- info_addr = frame_addr + offsetof(struct target_rt_sigframe, info);
- __put_user(info_addr, &frame->pinfo);
-
- uc_addr = frame_addr + offsetof(struct target_rt_sigframe, uc);
- __put_user(uc_addr, &frame->puc);
-
- tswap_siginfo(&frame->info, info);
-
- /* Create the ucontext */
-
- __put_user(0, &frame->uc.tuc_flags);
- __put_user(0, &frame->uc.tuc_link);
- __put_user(target_sigaltstack_used.ss_sp,
- &frame->uc.tuc_stack.ss_sp);
- __put_user(sas_ss_flags(env->aregs[7]),
- &frame->uc.tuc_stack.ss_flags);
- __put_user(target_sigaltstack_used.ss_size,
- &frame->uc.tuc_stack.ss_size);
- err |= target_rt_setup_ucontext(&frame->uc, env);
-
- if (err)
- goto give_sigsegv;
-
- for(i = 0; i < TARGET_NSIG_WORDS; i++) {
- __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
- }
-
- /* Set up to return from userspace. */
-
- retcode_addr = frame_addr + offsetof(struct target_sigframe, retcode);
- __put_user(retcode_addr, &frame->pretcode);
-
- /* moveq #,d0; notb d0; trap #0 */
-
- __put_user(0x70004600 + ((TARGET_NR_rt_sigreturn ^ 0xff) << 16),
- (uint32_t *)(frame->retcode + 0));
- __put_user(0x4e40, (uint16_t *)(frame->retcode + 4));
-
- if (err)
- goto give_sigsegv;
-
- /* Set up to return from userspace */
-
- env->aregs[7] = frame_addr;
- env->pc = ka->_sa_handler;
-
- unlock_user_struct(frame, frame_addr, 1);
- return;
-
-give_sigsegv:
- unlock_user_struct(frame, frame_addr, 1);
- force_sigsegv(sig);
-}
-
-long do_sigreturn(CPUM68KState *env)
-{
- struct target_sigframe *frame;
- abi_ulong frame_addr = env->aregs[7] - 4;
- target_sigset_t target_set;
- sigset_t set;
- int i;
-
- trace_user_do_sigreturn(env, frame_addr);
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
- goto badframe;
-
- /* set blocked signals */
-
- __get_user(target_set.sig[0], &frame->sc.sc_mask);
-
- for(i = 1; i < TARGET_NSIG_WORDS; i++) {
- __get_user(target_set.sig[i], &frame->extramask[i - 1]);
- }
-
- target_to_host_sigset_internal(&set, &target_set);
- set_sigmask(&set);
-
- /* restore registers */
-
- restore_sigcontext(env, &frame->sc);
-
- unlock_user_struct(frame, frame_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-
-badframe:
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-
-long do_rt_sigreturn(CPUM68KState *env)
-{
- struct target_rt_sigframe *frame;
- abi_ulong frame_addr = env->aregs[7] - 4;
- sigset_t set;
-
- trace_user_do_rt_sigreturn(env, frame_addr);
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
- goto badframe;
-
- target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
- set_sigmask(&set);
-
- /* restore registers */
-
- if (target_rt_restore_ucontext(env, &frame->uc))
- goto badframe;
-
- if (do_sigaltstack(frame_addr +
- offsetof(struct target_rt_sigframe, uc.tuc_stack),
- 0, get_sp_from_cpustate(env)) == -EFAULT)
- goto badframe;
-
- unlock_user_struct(frame, frame_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-
-badframe:
- unlock_user_struct(frame, frame_addr, 0);
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-
-#elif defined(TARGET_ALPHA)
-
-struct target_sigcontext {
- abi_long sc_onstack;
- abi_long sc_mask;
- abi_long sc_pc;
- abi_long sc_ps;
- abi_long sc_regs[32];
- abi_long sc_ownedfp;
- abi_long sc_fpregs[32];
- abi_ulong sc_fpcr;
- abi_ulong sc_fp_control;
- abi_ulong sc_reserved1;
- abi_ulong sc_reserved2;
- abi_ulong sc_ssize;
- abi_ulong sc_sbase;
- abi_ulong sc_traparg_a0;
- abi_ulong sc_traparg_a1;
- abi_ulong sc_traparg_a2;
- abi_ulong sc_fp_trap_pc;
- abi_ulong sc_fp_trigger_sum;
- abi_ulong sc_fp_trigger_inst;
-};
-
-struct target_ucontext {
- abi_ulong tuc_flags;
- abi_ulong tuc_link;
- abi_ulong tuc_osf_sigmask;
- target_stack_t tuc_stack;
- struct target_sigcontext tuc_mcontext;
- target_sigset_t tuc_sigmask;
-};
-
-struct target_sigframe {
- struct target_sigcontext sc;
- unsigned int retcode[3];
-};
-
-struct target_rt_sigframe {
- target_siginfo_t info;
- struct target_ucontext uc;
- unsigned int retcode[3];
-};
-
-#define INSN_MOV_R30_R16 0x47fe0410
-#define INSN_LDI_R0 0x201f0000
-#define INSN_CALLSYS 0x00000083
-
-static void setup_sigcontext(struct target_sigcontext *sc, CPUAlphaState *env,
- abi_ulong frame_addr, target_sigset_t *set)
-{
- int i;
-
- __put_user(on_sig_stack(frame_addr), &sc->sc_onstack);
- __put_user(set->sig[0], &sc->sc_mask);
- __put_user(env->pc, &sc->sc_pc);
- __put_user(8, &sc->sc_ps);
-
- for (i = 0; i < 31; ++i) {
- __put_user(env->ir[i], &sc->sc_regs[i]);
- }
- __put_user(0, &sc->sc_regs[31]);
-
- for (i = 0; i < 31; ++i) {
- __put_user(env->fir[i], &sc->sc_fpregs[i]);
- }
- __put_user(0, &sc->sc_fpregs[31]);
- __put_user(cpu_alpha_load_fpcr(env), &sc->sc_fpcr);
-
- __put_user(0, &sc->sc_traparg_a0); /* FIXME */
- __put_user(0, &sc->sc_traparg_a1); /* FIXME */
- __put_user(0, &sc->sc_traparg_a2); /* FIXME */
-}
-
-static void restore_sigcontext(CPUAlphaState *env,
- struct target_sigcontext *sc)
-{
- uint64_t fpcr;
- int i;
-
- __get_user(env->pc, &sc->sc_pc);
-
- for (i = 0; i < 31; ++i) {
- __get_user(env->ir[i], &sc->sc_regs[i]);
- }
- for (i = 0; i < 31; ++i) {
- __get_user(env->fir[i], &sc->sc_fpregs[i]);
- }
-
- __get_user(fpcr, &sc->sc_fpcr);
- cpu_alpha_store_fpcr(env, fpcr);
-}
-
-static inline abi_ulong get_sigframe(struct target_sigaction *sa,
- CPUAlphaState *env,
- unsigned long framesize)
-{
- abi_ulong sp = env->ir[IR_SP];
-
- /* This is the X/Open sanctioned signal stack switching. */
- if ((sa->sa_flags & TARGET_SA_ONSTACK) != 0 && !sas_ss_flags(sp)) {
- sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
- }
- return (sp - framesize) & -32;
-}
-
-static void setup_frame(int sig, struct target_sigaction *ka,
- target_sigset_t *set, CPUAlphaState *env)
-{
- abi_ulong frame_addr, r26;
- struct target_sigframe *frame;
- int err = 0;
-
- frame_addr = get_sigframe(ka, env, sizeof(*frame));
- trace_user_setup_frame(env, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
- goto give_sigsegv;
- }
-
- setup_sigcontext(&frame->sc, env, frame_addr, set);
-
- if (ka->sa_restorer) {
- r26 = ka->sa_restorer;
- } else {
- __put_user(INSN_MOV_R30_R16, &frame->retcode[0]);
- __put_user(INSN_LDI_R0 + TARGET_NR_sigreturn,
- &frame->retcode[1]);
- __put_user(INSN_CALLSYS, &frame->retcode[2]);
- /* imb() */
- r26 = frame_addr;
- }
-
- unlock_user_struct(frame, frame_addr, 1);
-
- if (err) {
-give_sigsegv:
- force_sigsegv(sig);
- return;
- }
-
- env->ir[IR_RA] = r26;
- env->ir[IR_PV] = env->pc = ka->_sa_handler;
- env->ir[IR_A0] = sig;
- env->ir[IR_A1] = 0;
- env->ir[IR_A2] = frame_addr + offsetof(struct target_sigframe, sc);
- env->ir[IR_SP] = frame_addr;
-}
-
-static void setup_rt_frame(int sig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPUAlphaState *env)
-{
- abi_ulong frame_addr, r26;
- struct target_rt_sigframe *frame;
- int i, err = 0;
-
- frame_addr = get_sigframe(ka, env, sizeof(*frame));
- trace_user_setup_rt_frame(env, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
- goto give_sigsegv;
- }
-
- tswap_siginfo(&frame->info, info);
-
- __put_user(0, &frame->uc.tuc_flags);
- __put_user(0, &frame->uc.tuc_link);
- __put_user(set->sig[0], &frame->uc.tuc_osf_sigmask);
- __put_user(target_sigaltstack_used.ss_sp,
- &frame->uc.tuc_stack.ss_sp);
- __put_user(sas_ss_flags(env->ir[IR_SP]),
- &frame->uc.tuc_stack.ss_flags);
- __put_user(target_sigaltstack_used.ss_size,
- &frame->uc.tuc_stack.ss_size);
- setup_sigcontext(&frame->uc.tuc_mcontext, env, frame_addr, set);
- for (i = 0; i < TARGET_NSIG_WORDS; ++i) {
- __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
- }
-
- if (ka->sa_restorer) {
- r26 = ka->sa_restorer;
- } else {
- __put_user(INSN_MOV_R30_R16, &frame->retcode[0]);
- __put_user(INSN_LDI_R0 + TARGET_NR_rt_sigreturn,
- &frame->retcode[1]);
- __put_user(INSN_CALLSYS, &frame->retcode[2]);
- /* imb(); */
- r26 = frame_addr;
- }
-
- if (err) {
-give_sigsegv:
- force_sigsegv(sig);
- return;
- }
-
- env->ir[IR_RA] = r26;
- env->ir[IR_PV] = env->pc = ka->_sa_handler;
- env->ir[IR_A0] = sig;
- env->ir[IR_A1] = frame_addr + offsetof(struct target_rt_sigframe, info);
- env->ir[IR_A2] = frame_addr + offsetof(struct target_rt_sigframe, uc);
- env->ir[IR_SP] = frame_addr;
-}
-
-long do_sigreturn(CPUAlphaState *env)
-{
- struct target_sigcontext *sc;
- abi_ulong sc_addr = env->ir[IR_A0];
- target_sigset_t target_set;
- sigset_t set;
-
- if (!lock_user_struct(VERIFY_READ, sc, sc_addr, 1)) {
- goto badframe;
- }
-
- target_sigemptyset(&target_set);
- __get_user(target_set.sig[0], &sc->sc_mask);
-
- target_to_host_sigset_internal(&set, &target_set);
- set_sigmask(&set);
-
- restore_sigcontext(env, sc);
- unlock_user_struct(sc, sc_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-
-badframe:
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-
-long do_rt_sigreturn(CPUAlphaState *env)
-{
- abi_ulong frame_addr = env->ir[IR_A0];
- struct target_rt_sigframe *frame;
- sigset_t set;
-
- trace_user_do_rt_sigreturn(env, frame_addr);
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
- goto badframe;
- }
- target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
- set_sigmask(&set);
-
- restore_sigcontext(env, &frame->uc.tuc_mcontext);
- if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe,
- uc.tuc_stack),
- 0, env->ir[IR_SP]) == -EFAULT) {
- goto badframe;
- }
-
- unlock_user_struct(frame, frame_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-
-
-badframe:
- unlock_user_struct(frame, frame_addr, 0);
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-
-#elif defined(TARGET_TILEGX)
-
-struct target_sigcontext {
- union {
- /* General-purpose registers. */
- abi_ulong gregs[56];
- struct {
- abi_ulong __gregs[53];
- abi_ulong tp; /* Aliases gregs[TREG_TP]. */
- abi_ulong sp; /* Aliases gregs[TREG_SP]. */
- abi_ulong lr; /* Aliases gregs[TREG_LR]. */
- };
- };
- abi_ulong pc; /* Program counter. */
- abi_ulong ics; /* In Interrupt Critical Section? */
- abi_ulong faultnum; /* Fault number. */
- abi_ulong pad[5];
-};
-
-struct target_ucontext {
- abi_ulong tuc_flags;
- abi_ulong tuc_link;
- target_stack_t tuc_stack;
- struct target_sigcontext tuc_mcontext;
- target_sigset_t tuc_sigmask; /* mask last for extensibility */
-};
-
-struct target_rt_sigframe {
- unsigned char save_area[16]; /* caller save area */
- struct target_siginfo info;
- struct target_ucontext uc;
- abi_ulong retcode[2];
-};
-
-#define INSN_MOVELI_R10_139 0x00045fe551483000ULL /* { moveli r10, 139 } */
-#define INSN_SWINT1 0x286b180051485000ULL /* { swint1 } */
-
-
-static void setup_sigcontext(struct target_sigcontext *sc,
- CPUArchState *env, int signo)
-{
- int i;
-
- for (i = 0; i < TILEGX_R_COUNT; ++i) {
- __put_user(env->regs[i], &sc->gregs[i]);
- }
-
- __put_user(env->pc, &sc->pc);
- __put_user(0, &sc->ics);
- __put_user(signo, &sc->faultnum);
-}
-
-static void restore_sigcontext(CPUTLGState *env, struct target_sigcontext *sc)
-{
- int i;
-
- for (i = 0; i < TILEGX_R_COUNT; ++i) {
- __get_user(env->regs[i], &sc->gregs[i]);
- }
-
- __get_user(env->pc, &sc->pc);
-}
-
-static abi_ulong get_sigframe(struct target_sigaction *ka, CPUArchState *env,
- size_t frame_size)
-{
- unsigned long sp = env->regs[TILEGX_R_SP];
-
- if (on_sig_stack(sp) && !likely(on_sig_stack(sp - frame_size))) {
- return -1UL;
- }
-
- if ((ka->sa_flags & SA_ONSTACK) && !sas_ss_flags(sp)) {
- sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
- }
-
- sp -= frame_size;
- sp &= -16UL;
- return sp;
-}
-
-static void setup_rt_frame(int sig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPUArchState *env)
-{
- abi_ulong frame_addr;
- struct target_rt_sigframe *frame;
- unsigned long restorer;
-
- frame_addr = get_sigframe(ka, env, sizeof(*frame));
- trace_user_setup_rt_frame(env, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
- goto give_sigsegv;
- }
-
- /* Always write at least the signal number for the stack backtracer. */
- if (ka->sa_flags & TARGET_SA_SIGINFO) {
- /* At sigreturn time, restore the callee-save registers too. */
- tswap_siginfo(&frame->info, info);
- /* regs->flags |= PT_FLAGS_RESTORE_REGS; FIXME: we can skip it? */
- } else {
- __put_user(info->si_signo, &frame->info.si_signo);
- }
-
- /* Create the ucontext. */
- __put_user(0, &frame->uc.tuc_flags);
- __put_user(0, &frame->uc.tuc_link);
- __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
- __put_user(sas_ss_flags(env->regs[TILEGX_R_SP]),
- &frame->uc.tuc_stack.ss_flags);
- __put_user(target_sigaltstack_used.ss_size, &frame->uc.tuc_stack.ss_size);
- setup_sigcontext(&frame->uc.tuc_mcontext, env, info->si_signo);
-
- if (ka->sa_flags & TARGET_SA_RESTORER) {
- restorer = (unsigned long) ka->sa_restorer;
- } else {
- __put_user(INSN_MOVELI_R10_139, &frame->retcode[0]);
- __put_user(INSN_SWINT1, &frame->retcode[1]);
- restorer = frame_addr + offsetof(struct target_rt_sigframe, retcode);
- }
- env->pc = (unsigned long) ka->_sa_handler;
- env->regs[TILEGX_R_SP] = (unsigned long) frame;
- env->regs[TILEGX_R_LR] = restorer;
- env->regs[0] = (unsigned long) sig;
- env->regs[1] = (unsigned long) &frame->info;
- env->regs[2] = (unsigned long) &frame->uc;
- /* regs->flags |= PT_FLAGS_CALLER_SAVES; FIXME: we can skip it? */
-
- unlock_user_struct(frame, frame_addr, 1);
- return;
-
-give_sigsegv:
- force_sigsegv(sig);
-}
-
-long do_rt_sigreturn(CPUTLGState *env)
-{
- abi_ulong frame_addr = env->regs[TILEGX_R_SP];
- struct target_rt_sigframe *frame;
- sigset_t set;
-
- trace_user_do_rt_sigreturn(env, frame_addr);
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
- goto badframe;
- }
- target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
- set_sigmask(&set);
-
- restore_sigcontext(env, &frame->uc.tuc_mcontext);
- if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe,
- uc.tuc_stack),
- 0, env->regs[TILEGX_R_SP]) == -EFAULT) {
- goto badframe;
- }
-
- unlock_user_struct(frame, frame_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-
-
- badframe:
- unlock_user_struct(frame, frame_addr, 0);
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-
-#elif defined(TARGET_RISCV)
-
-/* Signal handler invocation must be transparent for the code being
- interrupted. Complete CPU (hart) state is saved on entry and restored
- before returning from the handler. Process sigmask is also saved to block
- signals while the handler is running. The handler gets its own stack,
- which also doubles as storage for the CPU state and sigmask.
-
- The code below is qemu re-implementation of arch/riscv/kernel/signal.c */
-
-struct target_sigcontext {
- abi_long pc;
- abi_long gpr[31]; /* x0 is not present, so all offsets must be -1 */
- uint64_t fpr[32];
- uint32_t fcsr;
-}; /* cf. riscv-linux:arch/riscv/include/uapi/asm/ptrace.h */
-
-struct target_ucontext {
- unsigned long uc_flags;
- struct target_ucontext *uc_link;
- target_stack_t uc_stack;
- struct target_sigcontext uc_mcontext;
- target_sigset_t uc_sigmask;
-};
-
-struct target_rt_sigframe {
- uint32_t tramp[2]; /* not in kernel, which uses VDSO instead */
- struct target_siginfo info;
- struct target_ucontext uc;
-};
-
-static abi_ulong get_sigframe(struct target_sigaction *ka,
- CPURISCVState *regs, size_t framesize)
-{
- abi_ulong sp = regs->gpr[xSP];
- int onsigstack = on_sig_stack(sp);
-
- /* redzone */
- /* This is the X/Open sanctioned signal stack switching. */
- if ((ka->sa_flags & TARGET_SA_ONSTACK) != 0 && !onsigstack) {
- sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
- }
-
- sp -= framesize;
- sp &= ~3UL; /* align sp on 4-byte boundary */
-
- /* If we are on the alternate signal stack and would overflow it, don't.
- Return an always-bogus address instead so we will die with SIGSEGV. */
- if (onsigstack && !likely(on_sig_stack(sp))) {
- return -1L;
- }
-
- return sp;
-}
-
-static void setup_sigcontext(struct target_sigcontext *sc, CPURISCVState *env)
-{
- int i;
-
- __put_user(env->pc, &sc->pc);
-
- for (i = 1; i < 32; i++) {
- __put_user(env->gpr[i], &sc->gpr[i - 1]);
- }
- for (i = 0; i < 32; i++) {
- __put_user(env->fpr[i], &sc->fpr[i]);
- }
-
- uint32_t fcsr = csr_read_helper(env, CSR_FCSR); /*riscv_get_fcsr(env);*/
- __put_user(fcsr, &sc->fcsr);
-}
-
-static void setup_ucontext(struct target_ucontext *uc,
- CPURISCVState *env, target_sigset_t *set)
-{
- abi_ulong ss_sp = (target_ulong)target_sigaltstack_used.ss_sp;
- abi_ulong ss_flags = sas_ss_flags(env->gpr[xSP]);
- abi_ulong ss_size = target_sigaltstack_used.ss_size;
-
- __put_user(0, &(uc->uc_flags));
- __put_user(0, &(uc->uc_link));
-
- __put_user(ss_sp, &(uc->uc_stack.ss_sp));
- __put_user(ss_flags, &(uc->uc_stack.ss_flags));
- __put_user(ss_size, &(uc->uc_stack.ss_size));
-
- int i;
- for (i = 0; i < TARGET_NSIG_WORDS; i++) {
- __put_user(set->sig[i], &(uc->uc_sigmask.sig[i]));
- }
-
- setup_sigcontext(&uc->uc_mcontext, env);
-}
-
-static inline void install_sigtramp(uint32_t *tramp)
-{
- __put_user(0x08b00893, tramp + 0); /* li a7, 139 = __NR_rt_sigreturn */
- __put_user(0x00000073, tramp + 1); /* ecall */
-}
-
-static void setup_rt_frame(int sig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPURISCVState *env)
-{
- abi_ulong frame_addr;
- struct target_rt_sigframe *frame;
-
- frame_addr = get_sigframe(ka, env, sizeof(*frame));
- trace_user_setup_rt_frame(env, frame_addr);
-
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
- goto badframe;
- }
-
- setup_ucontext(&frame->uc, env, set);
- tswap_siginfo(&frame->info, info);
- install_sigtramp(frame->tramp);
-
- env->pc = ka->_sa_handler;
- env->gpr[xSP] = frame_addr;
- env->gpr[xA0] = sig;
- env->gpr[xA1] = frame_addr + offsetof(struct target_rt_sigframe, info);
- env->gpr[xA2] = frame_addr + offsetof(struct target_rt_sigframe, uc);
- env->gpr[xRA] = frame_addr + offsetof(struct target_rt_sigframe, tramp);
-
- return;
-
-badframe:
- unlock_user_struct(frame, frame_addr, 1);
- if (sig == TARGET_SIGSEGV) {
- ka->_sa_handler = TARGET_SIG_DFL;
- }
- force_sig(TARGET_SIGSEGV);
-}
-
-static void restore_sigcontext(CPURISCVState *env, struct target_sigcontext
*sc)
-{
- int i;
-
- __get_user(env->pc, &sc->pc);
-
- for (i = 1; i < 32; ++i) {
- __get_user(env->gpr[i], &sc->gpr[i - 1]);
- }
- for (i = 0; i < 32; ++i) {
- __get_user(env->fpr[i], &sc->fpr[i]);
- }
-
- uint32_t fcsr;
- __get_user(fcsr, &sc->fcsr);
- csr_write_helper(env, fcsr, CSR_FCSR);
-}
-
-static void restore_ucontext(CPURISCVState *env, struct target_ucontext *uc)
-{
- sigset_t blocked;
- target_sigset_t target_set;
- int i;
-
- target_sigemptyset(&target_set);
- for (i = 0; i < TARGET_NSIG_WORDS; i++) {
- __get_user(target_set.sig[i], &(uc->uc_sigmask.sig[i]));
- }
-
- target_to_host_sigset_internal(&blocked, &target_set);
- set_sigmask(&blocked);
-
- restore_sigcontext(env, &uc->uc_mcontext);
-}
-
-long do_rt_sigreturn(CPURISCVState *env)
-{
- struct target_rt_sigframe *frame;
- abi_ulong frame_addr;
-
- frame_addr = env->gpr[xSP];
- trace_user_do_sigreturn(env, frame_addr);
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
- goto badframe;
- }
-
- restore_ucontext(env, &frame->uc);
-
- if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe,
- uc.uc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) {
- goto badframe;
- }
-
- unlock_user_struct(frame, frame_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-
-badframe:
- unlock_user_struct(frame, frame_addr, 0);
- force_sig(TARGET_SIGSEGV);
- return 0;
-}
-
-#elif defined(TARGET_HPPA)
-
-struct target_sigcontext {
- abi_ulong sc_flags;
- abi_ulong sc_gr[32];
- uint64_t sc_fr[32];
- abi_ulong sc_iasq[2];
- abi_ulong sc_iaoq[2];
- abi_ulong sc_sar;
-};
-
-struct target_ucontext {
- abi_uint tuc_flags;
- abi_ulong tuc_link;
- target_stack_t tuc_stack;
- abi_uint pad[1];
- struct target_sigcontext tuc_mcontext;
- target_sigset_t tuc_sigmask;
-};
-
-struct target_rt_sigframe {
- abi_uint tramp[9];
- target_siginfo_t info;
- struct target_ucontext uc;
- /* hidden location of upper halves of pa2.0 64-bit gregs */
-};
-
-static void setup_sigcontext(struct target_sigcontext *sc, CPUArchState *env)
-{
- int flags = 0;
- int i;
-
- /* ??? if on_sig_stack, flags |= 1 (PARISC_SC_FLAG_ONSTACK). */
-
- if (env->iaoq_f < TARGET_PAGE_SIZE) {
- /* In the gateway page, executing a syscall. */
- flags |= 2; /* PARISC_SC_FLAG_IN_SYSCALL */
- __put_user(env->gr[31], &sc->sc_iaoq[0]);
- __put_user(env->gr[31] + 4, &sc->sc_iaoq[1]);
- } else {
- __put_user(env->iaoq_f, &sc->sc_iaoq[0]);
- __put_user(env->iaoq_b, &sc->sc_iaoq[1]);
- }
- __put_user(0, &sc->sc_iasq[0]);
- __put_user(0, &sc->sc_iasq[1]);
- __put_user(flags, &sc->sc_flags);
-
- __put_user(cpu_hppa_get_psw(env), &sc->sc_gr[0]);
- for (i = 1; i < 32; ++i) {
- __put_user(env->gr[i], &sc->sc_gr[i]);
- }
-
- __put_user((uint64_t)env->fr0_shadow << 32, &sc->sc_fr[0]);
- for (i = 1; i < 32; ++i) {
- __put_user(env->fr[i], &sc->sc_fr[i]);
- }
-
- __put_user(env->cr[CR_SAR], &sc->sc_sar);
-}
-
-static void restore_sigcontext(CPUArchState *env, struct target_sigcontext *sc)
-{
- target_ulong psw;
- int i;
-
- __get_user(psw, &sc->sc_gr[0]);
- cpu_hppa_put_psw(env, psw);
-
- for (i = 1; i < 32; ++i) {
- __get_user(env->gr[i], &sc->sc_gr[i]);
- }
- for (i = 0; i < 32; ++i) {
- __get_user(env->fr[i], &sc->sc_fr[i]);
- }
- cpu_hppa_loaded_fr0(env);
-
- __get_user(env->iaoq_f, &sc->sc_iaoq[0]);
- __get_user(env->iaoq_b, &sc->sc_iaoq[1]);
- __get_user(env->cr[CR_SAR], &sc->sc_sar);
-}
-
-/* No, this doesn't look right, but it's copied straight from the kernel. */
-#define PARISC_RT_SIGFRAME_SIZE32 \
- ((sizeof(struct target_rt_sigframe) + 48 + 64) & -64)
-
-static void setup_rt_frame(int sig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPUArchState *env)
-{
- abi_ulong frame_addr, sp, haddr;
- struct target_rt_sigframe *frame;
- int i;
-
- sp = env->gr[30];
- if (ka->sa_flags & TARGET_SA_ONSTACK) {
- if (sas_ss_flags(sp) == 0) {
- sp = (target_sigaltstack_used.ss_sp + 0x7f) & ~0x3f;
- }
- }
- frame_addr = QEMU_ALIGN_UP(sp, 64);
- sp = frame_addr + PARISC_RT_SIGFRAME_SIZE32;
-
- trace_user_setup_rt_frame(env, frame_addr);
-
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
- goto give_sigsegv;
- }
-
- tswap_siginfo(&frame->info, info);
- frame->uc.tuc_flags = 0;
- frame->uc.tuc_link = 0;
-
- __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
- __put_user(sas_ss_flags(get_sp_from_cpustate(env)),
- &frame->uc.tuc_stack.ss_flags);
- __put_user(target_sigaltstack_used.ss_size,
- &frame->uc.tuc_stack.ss_size);
-
- for (i = 0; i < TARGET_NSIG_WORDS; i++) {
- __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
- }
-
- setup_sigcontext(&frame->uc.tuc_mcontext, env);
-
- __put_user(0x34190000, frame->tramp + 0); /* ldi 0,%r25 */
- __put_user(0x3414015a, frame->tramp + 1); /* ldi __NR_rt_sigreturn,%r20 */
- __put_user(0xe4008200, frame->tramp + 2); /* be,l 0x100(%sr2,%r0) */
- __put_user(0x08000240, frame->tramp + 3); /* nop */
-
- unlock_user_struct(frame, frame_addr, 1);
-
- env->gr[2] = h2g(frame->tramp);
- env->gr[30] = sp;
- env->gr[26] = sig;
- env->gr[25] = h2g(&frame->info);
- env->gr[24] = h2g(&frame->uc);
-
- haddr = ka->_sa_handler;
- if (haddr & 2) {
- /* Function descriptor. */
- target_ulong *fdesc, dest;
-
- haddr &= -4;
- if (!lock_user_struct(VERIFY_READ, fdesc, haddr, 1)) {
- goto give_sigsegv;
- }
- __get_user(dest, fdesc);
- __get_user(env->gr[19], fdesc + 1);
- unlock_user_struct(fdesc, haddr, 1);
- haddr = dest;
- }
- env->iaoq_f = haddr;
- env->iaoq_b = haddr + 4;
- return;
-
- give_sigsegv:
- force_sigsegv(sig);
-}
-
-long do_rt_sigreturn(CPUArchState *env)
-{
- abi_ulong frame_addr = env->gr[30] - PARISC_RT_SIGFRAME_SIZE32;
- struct target_rt_sigframe *frame;
- sigset_t set;
-
- trace_user_do_rt_sigreturn(env, frame_addr);
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
- goto badframe;
- }
- target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
- set_sigmask(&set);
-
- restore_sigcontext(env, &frame->uc.tuc_mcontext);
- unlock_user_struct(frame, frame_addr, 0);
-
- if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe,
- uc.tuc_stack),
- 0, env->gr[30]) == -EFAULT) {
- goto badframe;
- }
-
- unlock_user_struct(frame, frame_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-
- badframe:
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-
-#elif defined(TARGET_XTENSA)
-
-struct target_sigcontext {
- abi_ulong sc_pc;
- abi_ulong sc_ps;
- abi_ulong sc_lbeg;
- abi_ulong sc_lend;
- abi_ulong sc_lcount;
- abi_ulong sc_sar;
- abi_ulong sc_acclo;
- abi_ulong sc_acchi;
- abi_ulong sc_a[16];
- abi_ulong sc_xtregs;
-};
-
-struct target_ucontext {
- abi_ulong tuc_flags;
- abi_ulong tuc_link;
- target_stack_t tuc_stack;
- struct target_sigcontext tuc_mcontext;
- target_sigset_t tuc_sigmask;
-};
-
-struct target_rt_sigframe {
- target_siginfo_t info;
- struct target_ucontext uc;
- /* TODO: xtregs */
- uint8_t retcode[6];
- abi_ulong window[4];
-};
-
-static abi_ulong get_sigframe(struct target_sigaction *sa,
- CPUXtensaState *env,
- unsigned long framesize)
-{
- abi_ulong sp = env->regs[1];
-
- /* This is the X/Open sanctioned signal stack switching. */
- if ((sa->sa_flags & TARGET_SA_ONSTACK) != 0 && !sas_ss_flags(sp)) {
- sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
- }
- return (sp - framesize) & -16;
-}
-
-static int flush_window_regs(CPUXtensaState *env)
-{
- const uint32_t nareg_mask = env->config->nareg - 1;
- uint32_t wb = env->sregs[WINDOW_BASE];
- uint32_t ws = (xtensa_replicate_windowstart(env) >> (wb + 1)) &
- ((1 << env->config->nareg / 4) - 1);
- uint32_t d = ctz32(ws) + 1;
- uint32_t sp;
- abi_long ret = 0;
-
- wb += d;
- ws >>= d;
-
- xtensa_sync_phys_from_window(env);
- sp = env->phys_regs[(wb * 4 + 1) & nareg_mask];
-
- while (ws && ret == 0) {
- int d;
- int i;
- int idx;
-
- if (ws & 0x1) {
- ws >>= 1;
- d = 1;
- } else if (ws & 0x2) {
- ws >>= 2;
- d = 2;
- for (i = 0; i < 4; ++i) {
- idx = (wb * 4 + 4 + i) & nareg_mask;
- ret |= put_user_ual(env->phys_regs[idx], sp + (i - 12) * 4);
- }
- } else if (ws & 0x4) {
- ws >>= 3;
- d = 3;
- for (i = 0; i < 8; ++i) {
- idx = (wb * 4 + 4 + i) & nareg_mask;
- ret |= put_user_ual(env->phys_regs[idx], sp + (i - 16) * 4);
- }
- } else {
- g_assert_not_reached();
- }
- sp = env->phys_regs[((wb + d) * 4 + 1) & nareg_mask];
- for (i = 0; i < 4; ++i) {
- idx = (wb * 4 + i) & nareg_mask;
- ret |= put_user_ual(env->phys_regs[idx], sp + (i - 4) * 4);
- }
- wb += d;
- }
- return ret == 0;
-}
-
-static int setup_sigcontext(struct target_rt_sigframe *frame,
- CPUXtensaState *env)
-{
- struct target_sigcontext *sc = &frame->uc.tuc_mcontext;
- int i;
-
- __put_user(env->pc, &sc->sc_pc);
- __put_user(env->sregs[PS], &sc->sc_ps);
- __put_user(env->sregs[LBEG], &sc->sc_lbeg);
- __put_user(env->sregs[LEND], &sc->sc_lend);
- __put_user(env->sregs[LCOUNT], &sc->sc_lcount);
- if (!flush_window_regs(env)) {
- return 0;
- }
- for (i = 0; i < 16; ++i) {
- __put_user(env->regs[i], sc->sc_a + i);
- }
- __put_user(0, &sc->sc_xtregs);
- /* TODO: xtregs */
- return 1;
-}
-
-static void setup_rt_frame(int sig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPUXtensaState *env)
-{
- abi_ulong frame_addr;
- struct target_rt_sigframe *frame;
- uint32_t ra;
- int i;
-
- frame_addr = get_sigframe(ka, env, sizeof(*frame));
- trace_user_setup_rt_frame(env, frame_addr);
-
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
- goto give_sigsegv;
- }
-
- if (ka->sa_flags & SA_SIGINFO) {
- tswap_siginfo(&frame->info, info);
- }
-
- __put_user(0, &frame->uc.tuc_flags);
- __put_user(0, &frame->uc.tuc_link);
- __put_user(target_sigaltstack_used.ss_sp,
- &frame->uc.tuc_stack.ss_sp);
- __put_user(sas_ss_flags(env->regs[1]),
- &frame->uc.tuc_stack.ss_flags);
- __put_user(target_sigaltstack_used.ss_size,
- &frame->uc.tuc_stack.ss_size);
- if (!setup_sigcontext(frame, env)) {
- unlock_user_struct(frame, frame_addr, 0);
- goto give_sigsegv;
- }
- for (i = 0; i < TARGET_NSIG_WORDS; ++i) {
- __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
- }
-
- if (ka->sa_flags & TARGET_SA_RESTORER) {
- ra = ka->sa_restorer;
- } else {
- ra = frame_addr + offsetof(struct target_rt_sigframe, retcode);
-#ifdef TARGET_WORDS_BIGENDIAN
- /* Generate instruction: MOVI a2, __NR_rt_sigreturn */
- __put_user(0x22, &frame->retcode[0]);
- __put_user(0x0a, &frame->retcode[1]);
- __put_user(TARGET_NR_rt_sigreturn, &frame->retcode[2]);
- /* Generate instruction: SYSCALL */
- __put_user(0x00, &frame->retcode[3]);
- __put_user(0x05, &frame->retcode[4]);
- __put_user(0x00, &frame->retcode[5]);
-#else
- /* Generate instruction: MOVI a2, __NR_rt_sigreturn */
- __put_user(0x22, &frame->retcode[0]);
- __put_user(0xa0, &frame->retcode[1]);
- __put_user(TARGET_NR_rt_sigreturn, &frame->retcode[2]);
- /* Generate instruction: SYSCALL */
- __put_user(0x00, &frame->retcode[3]);
- __put_user(0x50, &frame->retcode[4]);
- __put_user(0x00, &frame->retcode[5]);
-#endif
- }
- env->sregs[PS] = PS_UM | (3 << PS_RING_SHIFT);
- if (xtensa_option_enabled(env->config, XTENSA_OPTION_WINDOWED_REGISTER)) {
- env->sregs[PS] |= PS_WOE | (1 << PS_CALLINC_SHIFT);
- }
- memset(env->regs, 0, sizeof(env->regs));
- env->pc = ka->_sa_handler;
- env->regs[1] = frame_addr;
- env->sregs[WINDOW_BASE] = 0;
- env->sregs[WINDOW_START] = 1;
-
- env->regs[4] = (ra & 0x3fffffff) | 0x40000000;
- env->regs[6] = sig;
- env->regs[7] = frame_addr + offsetof(struct target_rt_sigframe, info);
- env->regs[8] = frame_addr + offsetof(struct target_rt_sigframe, uc);
- unlock_user_struct(frame, frame_addr, 1);
- return;
-
-give_sigsegv:
- force_sigsegv(sig);
- return;
-}
-
-static void restore_sigcontext(CPUXtensaState *env,
- struct target_rt_sigframe *frame)
-{
- struct target_sigcontext *sc = &frame->uc.tuc_mcontext;
- uint32_t ps;
- int i;
-
- __get_user(env->pc, &sc->sc_pc);
- __get_user(ps, &sc->sc_ps);
- __get_user(env->sregs[LBEG], &sc->sc_lbeg);
- __get_user(env->sregs[LEND], &sc->sc_lend);
- __get_user(env->sregs[LCOUNT], &sc->sc_lcount);
-
- env->sregs[WINDOW_BASE] = 0;
- env->sregs[WINDOW_START] = 1;
- env->sregs[PS] = deposit32(env->sregs[PS],
- PS_CALLINC_SHIFT,
- PS_CALLINC_LEN,
- extract32(ps, PS_CALLINC_SHIFT,
- PS_CALLINC_LEN));
- for (i = 0; i < 16; ++i) {
- __get_user(env->regs[i], sc->sc_a + i);
- }
- /* TODO: xtregs */
-}
-
-long do_rt_sigreturn(CPUXtensaState *env)
-{
- abi_ulong frame_addr = env->regs[1];
- struct target_rt_sigframe *frame;
- sigset_t set;
-
- trace_user_do_rt_sigreturn(env, frame_addr);
- if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
- goto badframe;
- }
- target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
- set_sigmask(&set);
-
- restore_sigcontext(env, frame);
-
- if (do_sigaltstack(frame_addr +
- offsetof(struct target_rt_sigframe, uc.tuc_stack),
- 0, get_sp_from_cpustate(env)) == -TARGET_EFAULT) {
- goto badframe;
- }
- unlock_user_struct(frame, frame_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-
-badframe:
- unlock_user_struct(frame, frame_addr, 0);
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
-
-#else
-#error Target needs to add support for signal handling
-#endif
+#include "signal.inc.c"
static void handle_pending_signal(CPUArchState *cpu_env, int sig,
struct emulated_sigtable *k)
diff --git a/linux-user/sparc/signal.inc.c b/linux-user/sparc/signal.inc.c
new file mode 100644
index 0000000000..fe5ab902f6
--- /dev/null
+++ b/linux-user/sparc/signal.inc.c
@@ -0,0 +1,601 @@
+
+#define __SUNOS_MAXWIN 31
+
+/* This is what SunOS does, so shall I. */
+struct target_sigcontext {
+ abi_ulong sigc_onstack; /* state to restore */
+
+ abi_ulong sigc_mask; /* sigmask to restore */
+ abi_ulong sigc_sp; /* stack pointer */
+ abi_ulong sigc_pc; /* program counter */
+ abi_ulong sigc_npc; /* next program counter */
+ abi_ulong sigc_psr; /* for condition codes etc */
+ abi_ulong sigc_g1; /* User uses these two registers */
+ abi_ulong sigc_o0; /* within the trampoline code. */
+
+ /* Now comes information regarding the users window set
+ * at the time of the signal.
+ */
+ abi_ulong sigc_oswins; /* outstanding windows */
+
+ /* stack ptrs for each regwin buf */
+ char *sigc_spbuf[__SUNOS_MAXWIN];
+
+ /* Windows to restore after signal */
+ struct {
+ abi_ulong locals[8];
+ abi_ulong ins[8];
+ } sigc_wbuf[__SUNOS_MAXWIN];
+};
+/* A Sparc stack frame */
+struct sparc_stackf {
+ abi_ulong locals[8];
+ abi_ulong ins[8];
+ /* It's simpler to treat fp and callers_pc as elements of ins[]
+ * since we never need to access them ourselves.
+ */
+ char *structptr;
+ abi_ulong xargs[6];
+ abi_ulong xxargs[1];
+};
+
+typedef struct {
+ struct {
+ abi_ulong psr;
+ abi_ulong pc;
+ abi_ulong npc;
+ abi_ulong y;
+ abi_ulong u_regs[16]; /* globals and ins */
+ } si_regs;
+ int si_mask;
+} __siginfo_t;
+
+typedef struct {
+ abi_ulong si_float_regs[32];
+ unsigned long si_fsr;
+ unsigned long si_fpqdepth;
+ struct {
+ unsigned long *insn_addr;
+ unsigned long insn;
+ } si_fpqueue [16];
+} qemu_siginfo_fpu_t;
+
+
+struct target_signal_frame {
+ struct sparc_stackf ss;
+ __siginfo_t info;
+ abi_ulong fpu_save;
+ abi_ulong insns[2] __attribute__ ((aligned (8)));
+ abi_ulong extramask[TARGET_NSIG_WORDS - 1];
+ abi_ulong extra_size; /* Should be 0 */
+ qemu_siginfo_fpu_t fpu_state;
+};
+struct target_rt_signal_frame {
+ struct sparc_stackf ss;
+ siginfo_t info;
+ abi_ulong regs[20];
+ sigset_t mask;
+ abi_ulong fpu_save;
+ unsigned int insns[2];
+ stack_t stack;
+ unsigned int extra_size; /* Should be 0 */
+ qemu_siginfo_fpu_t fpu_state;
+};
+
+#define UREG_O0 16
+#define UREG_O6 22
+#define UREG_I0 0
+#define UREG_I1 1
+#define UREG_I2 2
+#define UREG_I3 3
+#define UREG_I4 4
+#define UREG_I5 5
+#define UREG_I6 6
+#define UREG_I7 7
+#define UREG_L0 8
+#define UREG_FP UREG_I6
+#define UREG_SP UREG_O6
+
+static inline abi_ulong get_sigframe(struct target_sigaction *sa,
+ CPUSPARCState *env,
+ unsigned long framesize)
+{
+ abi_ulong sp;
+
+ sp = env->regwptr[UREG_FP];
+
+ /* This is the X/Open sanctioned signal stack switching. */
+ if (sa->sa_flags & TARGET_SA_ONSTACK) {
+ if (!on_sig_stack(sp)
+ && !((target_sigaltstack_used.ss_sp +
target_sigaltstack_used.ss_size) & 7)) {
+ sp = target_sigaltstack_used.ss_sp +
target_sigaltstack_used.ss_size;
+ }
+ }
+ return sp - framesize;
+}
+
+static int
+setup___siginfo(__siginfo_t *si, CPUSPARCState *env, abi_ulong mask)
+{
+ int err = 0, i;
+
+ __put_user(env->psr, &si->si_regs.psr);
+ __put_user(env->pc, &si->si_regs.pc);
+ __put_user(env->npc, &si->si_regs.npc);
+ __put_user(env->y, &si->si_regs.y);
+ for (i=0; i < 8; i++) {
+ __put_user(env->gregs[i], &si->si_regs.u_regs[i]);
+ }
+ for (i=0; i < 8; i++) {
+ __put_user(env->regwptr[UREG_I0 + i], &si->si_regs.u_regs[i+8]);
+ }
+ __put_user(mask, &si->si_mask);
+ return err;
+}
+
+#if 0
+static int
+setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/
+ CPUSPARCState *env, unsigned long mask)
+{
+ int err = 0;
+
+ __put_user(mask, &sc->sigc_mask);
+ __put_user(env->regwptr[UREG_SP], &sc->sigc_sp);
+ __put_user(env->pc, &sc->sigc_pc);
+ __put_user(env->npc, &sc->sigc_npc);
+ __put_user(env->psr, &sc->sigc_psr);
+ __put_user(env->gregs[1], &sc->sigc_g1);
+ __put_user(env->regwptr[UREG_O0], &sc->sigc_o0);
+
+ return err;
+}
+#endif
+#define NF_ALIGNEDSZ (((sizeof(struct target_signal_frame) + 7) & (~7)))
+
+static void setup_frame(int sig, struct target_sigaction *ka,
+ target_sigset_t *set, CPUSPARCState *env)
+{
+ abi_ulong sf_addr;
+ struct target_signal_frame *sf;
+ int sigframe_size, err, i;
+
+ /* 1. Make sure everything is clean */
+ //synchronize_user_stack();
+
+ sigframe_size = NF_ALIGNEDSZ;
+ sf_addr = get_sigframe(ka, env, sigframe_size);
+ trace_user_setup_frame(env, sf_addr);
+
+ sf = lock_user(VERIFY_WRITE, sf_addr,
+ sizeof(struct target_signal_frame), 0);
+ if (!sf) {
+ goto sigsegv;
+ }
+#if 0
+ if (invalid_frame_pointer(sf, sigframe_size))
+ goto sigill_and_return;
+#endif
+ /* 2. Save the current process state */
+ err = setup___siginfo(&sf->info, env, set->sig[0]);
+ __put_user(0, &sf->extra_size);
+
+ //save_fpu_state(regs, &sf->fpu_state);
+ //__put_user(&sf->fpu_state, &sf->fpu_save);
+
+ __put_user(set->sig[0], &sf->info.si_mask);
+ for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) {
+ __put_user(set->sig[i + 1], &sf->extramask[i]);
+ }
+
+ for (i = 0; i < 8; i++) {
+ __put_user(env->regwptr[i + UREG_L0], &sf->ss.locals[i]);
+ }
+ for (i = 0; i < 8; i++) {
+ __put_user(env->regwptr[i + UREG_I0], &sf->ss.ins[i]);
+ }
+ if (err)
+ goto sigsegv;
+
+ /* 3. signal handler back-trampoline and parameters */
+ env->regwptr[UREG_FP] = sf_addr;
+ env->regwptr[UREG_I0] = sig;
+ env->regwptr[UREG_I1] = sf_addr +
+ offsetof(struct target_signal_frame, info);
+ env->regwptr[UREG_I2] = sf_addr +
+ offsetof(struct target_signal_frame, info);
+
+ /* 4. signal handler */
+ env->pc = ka->_sa_handler;
+ env->npc = (env->pc + 4);
+ /* 5. return to kernel instructions */
+ if (ka->sa_restorer) {
+ env->regwptr[UREG_I7] = ka->sa_restorer;
+ } else {
+ uint32_t val32;
+
+ env->regwptr[UREG_I7] = sf_addr +
+ offsetof(struct target_signal_frame, insns) - 2 * 4;
+
+ /* mov __NR_sigreturn, %g1 */
+ val32 = 0x821020d8;
+ __put_user(val32, &sf->insns[0]);
+
+ /* t 0x10 */
+ val32 = 0x91d02010;
+ __put_user(val32, &sf->insns[1]);
+ if (err)
+ goto sigsegv;
+
+ /* Flush instruction space. */
+ // flush_sig_insns(current->mm, (unsigned long) &(sf->insns[0]));
+ // tb_flush(env);
+ }
+ unlock_user(sf, sf_addr, sizeof(struct target_signal_frame));
+ return;
+#if 0
+sigill_and_return:
+ force_sig(TARGET_SIGILL);
+#endif
+sigsegv:
+ unlock_user(sf, sf_addr, sizeof(struct target_signal_frame));
+ force_sigsegv(sig);
+}
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPUSPARCState *env)
+{
+ fprintf(stderr, "setup_rt_frame: not implemented\n");
+}
+
+long do_sigreturn(CPUSPARCState *env)
+{
+ abi_ulong sf_addr;
+ struct target_signal_frame *sf;
+ uint32_t up_psr, pc, npc;
+ target_sigset_t set;
+ sigset_t host_set;
+ int err=0, i;
+
+ sf_addr = env->regwptr[UREG_FP];
+ trace_user_do_sigreturn(env, sf_addr);
+ if (!lock_user_struct(VERIFY_READ, sf, sf_addr, 1)) {
+ goto segv_and_exit;
+ }
+
+ /* 1. Make sure we are not getting garbage from the user */
+
+ if (sf_addr & 3)
+ goto segv_and_exit;
+
+ __get_user(pc, &sf->info.si_regs.pc);
+ __get_user(npc, &sf->info.si_regs.npc);
+
+ if ((pc | npc) & 3) {
+ goto segv_and_exit;
+ }
+
+ /* 2. Restore the state */
+ __get_user(up_psr, &sf->info.si_regs.psr);
+
+ /* User can only change condition codes and FPU enabling in %psr. */
+ env->psr = (up_psr & (PSR_ICC /* | PSR_EF */))
+ | (env->psr & ~(PSR_ICC /* | PSR_EF */));
+
+ env->pc = pc;
+ env->npc = npc;
+ __get_user(env->y, &sf->info.si_regs.y);
+ for (i=0; i < 8; i++) {
+ __get_user(env->gregs[i], &sf->info.si_regs.u_regs[i]);
+ }
+ for (i=0; i < 8; i++) {
+ __get_user(env->regwptr[i + UREG_I0], &sf->info.si_regs.u_regs[i+8]);
+ }
+
+ /* FIXME: implement FPU save/restore:
+ * __get_user(fpu_save, &sf->fpu_save);
+ * if (fpu_save)
+ * err |= restore_fpu_state(env, fpu_save);
+ */
+
+ /* This is pretty much atomic, no amount locking would prevent
+ * the races which exist anyways.
+ */
+ __get_user(set.sig[0], &sf->info.si_mask);
+ for(i = 1; i < TARGET_NSIG_WORDS; i++) {
+ __get_user(set.sig[i], &sf->extramask[i - 1]);
+ }
+
+ target_to_host_sigset_internal(&host_set, &set);
+ set_sigmask(&host_set);
+
+ if (err) {
+ goto segv_and_exit;
+ }
+ unlock_user_struct(sf, sf_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+segv_and_exit:
+ unlock_user_struct(sf, sf_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
+long do_rt_sigreturn(CPUSPARCState *env)
+{
+ trace_user_do_rt_sigreturn(env, 0);
+ fprintf(stderr, "do_rt_sigreturn: not implemented\n");
+ return -TARGET_ENOSYS;
+}
+
+#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
+#define SPARC_MC_TSTATE 0
+#define SPARC_MC_PC 1
+#define SPARC_MC_NPC 2
+#define SPARC_MC_Y 3
+#define SPARC_MC_G1 4
+#define SPARC_MC_G2 5
+#define SPARC_MC_G3 6
+#define SPARC_MC_G4 7
+#define SPARC_MC_G5 8
+#define SPARC_MC_G6 9
+#define SPARC_MC_G7 10
+#define SPARC_MC_O0 11
+#define SPARC_MC_O1 12
+#define SPARC_MC_O2 13
+#define SPARC_MC_O3 14
+#define SPARC_MC_O4 15
+#define SPARC_MC_O5 16
+#define SPARC_MC_O6 17
+#define SPARC_MC_O7 18
+#define SPARC_MC_NGREG 19
+
+typedef abi_ulong target_mc_greg_t;
+typedef target_mc_greg_t target_mc_gregset_t[SPARC_MC_NGREG];
+
+struct target_mc_fq {
+ abi_ulong *mcfq_addr;
+ uint32_t mcfq_insn;
+};
+
+struct target_mc_fpu {
+ union {
+ uint32_t sregs[32];
+ uint64_t dregs[32];
+ //uint128_t qregs[16];
+ } mcfpu_fregs;
+ abi_ulong mcfpu_fsr;
+ abi_ulong mcfpu_fprs;
+ abi_ulong mcfpu_gsr;
+ struct target_mc_fq *mcfpu_fq;
+ unsigned char mcfpu_qcnt;
+ unsigned char mcfpu_qentsz;
+ unsigned char mcfpu_enab;
+};
+typedef struct target_mc_fpu target_mc_fpu_t;
+
+typedef struct {
+ target_mc_gregset_t mc_gregs;
+ target_mc_greg_t mc_fp;
+ target_mc_greg_t mc_i7;
+ target_mc_fpu_t mc_fpregs;
+} target_mcontext_t;
+
+struct target_ucontext {
+ struct target_ucontext *tuc_link;
+ abi_ulong tuc_flags;
+ target_sigset_t tuc_sigmask;
+ target_mcontext_t tuc_mcontext;
+};
+
+/* A V9 register window */
+struct target_reg_window {
+ abi_ulong locals[8];
+ abi_ulong ins[8];
+};
+
+#define TARGET_STACK_BIAS 2047
+
+/* {set, get}context() needed for 64-bit SparcLinux userland. */
+void sparc64_set_context(CPUSPARCState *env)
+{
+ abi_ulong ucp_addr;
+ struct target_ucontext *ucp;
+ target_mc_gregset_t *grp;
+ abi_ulong pc, npc, tstate;
+ abi_ulong fp, i7, w_addr;
+ unsigned int i;
+
+ ucp_addr = env->regwptr[UREG_I0];
+ if (!lock_user_struct(VERIFY_READ, ucp, ucp_addr, 1)) {
+ goto do_sigsegv;
+ }
+ grp = &ucp->tuc_mcontext.mc_gregs;
+ __get_user(pc, &((*grp)[SPARC_MC_PC]));
+ __get_user(npc, &((*grp)[SPARC_MC_NPC]));
+ if ((pc | npc) & 3) {
+ goto do_sigsegv;
+ }
+ if (env->regwptr[UREG_I1]) {
+ target_sigset_t target_set;
+ sigset_t set;
+
+ if (TARGET_NSIG_WORDS == 1) {
+ __get_user(target_set.sig[0], &ucp->tuc_sigmask.sig[0]);
+ } else {
+ abi_ulong *src, *dst;
+ src = ucp->tuc_sigmask.sig;
+ dst = target_set.sig;
+ for (i = 0; i < TARGET_NSIG_WORDS; i++, dst++, src++) {
+ __get_user(*dst, src);
+ }
+ }
+ target_to_host_sigset_internal(&set, &target_set);
+ set_sigmask(&set);
+ }
+ env->pc = pc;
+ env->npc = npc;
+ __get_user(env->y, &((*grp)[SPARC_MC_Y]));
+ __get_user(tstate, &((*grp)[SPARC_MC_TSTATE]));
+ env->asi = (tstate >> 24) & 0xff;
+ cpu_put_ccr(env, tstate >> 32);
+ cpu_put_cwp64(env, tstate & 0x1f);
+ __get_user(env->gregs[1], (&(*grp)[SPARC_MC_G1]));
+ __get_user(env->gregs[2], (&(*grp)[SPARC_MC_G2]));
+ __get_user(env->gregs[3], (&(*grp)[SPARC_MC_G3]));
+ __get_user(env->gregs[4], (&(*grp)[SPARC_MC_G4]));
+ __get_user(env->gregs[5], (&(*grp)[SPARC_MC_G5]));
+ __get_user(env->gregs[6], (&(*grp)[SPARC_MC_G6]));
+ __get_user(env->gregs[7], (&(*grp)[SPARC_MC_G7]));
+ __get_user(env->regwptr[UREG_I0], (&(*grp)[SPARC_MC_O0]));
+ __get_user(env->regwptr[UREG_I1], (&(*grp)[SPARC_MC_O1]));
+ __get_user(env->regwptr[UREG_I2], (&(*grp)[SPARC_MC_O2]));
+ __get_user(env->regwptr[UREG_I3], (&(*grp)[SPARC_MC_O3]));
+ __get_user(env->regwptr[UREG_I4], (&(*grp)[SPARC_MC_O4]));
+ __get_user(env->regwptr[UREG_I5], (&(*grp)[SPARC_MC_O5]));
+ __get_user(env->regwptr[UREG_I6], (&(*grp)[SPARC_MC_O6]));
+ __get_user(env->regwptr[UREG_I7], (&(*grp)[SPARC_MC_O7]));
+
+ __get_user(fp, &(ucp->tuc_mcontext.mc_fp));
+ __get_user(i7, &(ucp->tuc_mcontext.mc_i7));
+
+ w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6];
+ if (put_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]),
+ abi_ulong) != 0) {
+ goto do_sigsegv;
+ }
+ if (put_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]),
+ abi_ulong) != 0) {
+ goto do_sigsegv;
+ }
+ /* FIXME this does not match how the kernel handles the FPU in
+ * its sparc64_set_context implementation. In particular the FPU
+ * is only restored if fenab is non-zero in:
+ * __get_user(fenab, &(ucp->tuc_mcontext.mc_fpregs.mcfpu_enab));
+ */
+ __get_user(env->fprs, &(ucp->tuc_mcontext.mc_fpregs.mcfpu_fprs));
+ {
+ uint32_t *src = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs;
+ for (i = 0; i < 64; i++, src++) {
+ if (i & 1) {
+ __get_user(env->fpr[i/2].l.lower, src);
+ } else {
+ __get_user(env->fpr[i/2].l.upper, src);
+ }
+ }
+ }
+ __get_user(env->fsr,
+ &(ucp->tuc_mcontext.mc_fpregs.mcfpu_fsr));
+ __get_user(env->gsr,
+ &(ucp->tuc_mcontext.mc_fpregs.mcfpu_gsr));
+ unlock_user_struct(ucp, ucp_addr, 0);
+ return;
+do_sigsegv:
+ unlock_user_struct(ucp, ucp_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+}
+
+void sparc64_get_context(CPUSPARCState *env)
+{
+ abi_ulong ucp_addr;
+ struct target_ucontext *ucp;
+ target_mc_gregset_t *grp;
+ target_mcontext_t *mcp;
+ abi_ulong fp, i7, w_addr;
+ int err;
+ unsigned int i;
+ target_sigset_t target_set;
+ sigset_t set;
+
+ ucp_addr = env->regwptr[UREG_I0];
+ if (!lock_user_struct(VERIFY_WRITE, ucp, ucp_addr, 0)) {
+ goto do_sigsegv;
+ }
+
+ mcp = &ucp->tuc_mcontext;
+ grp = &mcp->mc_gregs;
+
+ /* Skip over the trap instruction, first. */
+ env->pc = env->npc;
+ env->npc += 4;
+
+ /* If we're only reading the signal mask then do_sigprocmask()
+ * is guaranteed not to fail, which is important because we don't
+ * have any way to signal a failure or restart this operation since
+ * this is not a normal syscall.
+ */
+ err = do_sigprocmask(0, NULL, &set);
+ assert(err == 0);
+ host_to_target_sigset_internal(&target_set, &set);
+ if (TARGET_NSIG_WORDS == 1) {
+ __put_user(target_set.sig[0],
+ (abi_ulong *)&ucp->tuc_sigmask);
+ } else {
+ abi_ulong *src, *dst;
+ src = target_set.sig;
+ dst = ucp->tuc_sigmask.sig;
+ for (i = 0; i < TARGET_NSIG_WORDS; i++, dst++, src++) {
+ __put_user(*src, dst);
+ }
+ if (err)
+ goto do_sigsegv;
+ }
+
+ /* XXX: tstate must be saved properly */
+ // __put_user(env->tstate, &((*grp)[SPARC_MC_TSTATE]));
+ __put_user(env->pc, &((*grp)[SPARC_MC_PC]));
+ __put_user(env->npc, &((*grp)[SPARC_MC_NPC]));
+ __put_user(env->y, &((*grp)[SPARC_MC_Y]));
+ __put_user(env->gregs[1], &((*grp)[SPARC_MC_G1]));
+ __put_user(env->gregs[2], &((*grp)[SPARC_MC_G2]));
+ __put_user(env->gregs[3], &((*grp)[SPARC_MC_G3]));
+ __put_user(env->gregs[4], &((*grp)[SPARC_MC_G4]));
+ __put_user(env->gregs[5], &((*grp)[SPARC_MC_G5]));
+ __put_user(env->gregs[6], &((*grp)[SPARC_MC_G6]));
+ __put_user(env->gregs[7], &((*grp)[SPARC_MC_G7]));
+ __put_user(env->regwptr[UREG_I0], &((*grp)[SPARC_MC_O0]));
+ __put_user(env->regwptr[UREG_I1], &((*grp)[SPARC_MC_O1]));
+ __put_user(env->regwptr[UREG_I2], &((*grp)[SPARC_MC_O2]));
+ __put_user(env->regwptr[UREG_I3], &((*grp)[SPARC_MC_O3]));
+ __put_user(env->regwptr[UREG_I4], &((*grp)[SPARC_MC_O4]));
+ __put_user(env->regwptr[UREG_I5], &((*grp)[SPARC_MC_O5]));
+ __put_user(env->regwptr[UREG_I6], &((*grp)[SPARC_MC_O6]));
+ __put_user(env->regwptr[UREG_I7], &((*grp)[SPARC_MC_O7]));
+
+ w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6];
+ fp = i7 = 0;
+ if (get_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]),
+ abi_ulong) != 0) {
+ goto do_sigsegv;
+ }
+ if (get_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]),
+ abi_ulong) != 0) {
+ goto do_sigsegv;
+ }
+ __put_user(fp, &(mcp->mc_fp));
+ __put_user(i7, &(mcp->mc_i7));
+
+ {
+ uint32_t *dst = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs;
+ for (i = 0; i < 64; i++, dst++) {
+ if (i & 1) {
+ __put_user(env->fpr[i/2].l.lower, dst);
+ } else {
+ __put_user(env->fpr[i/2].l.upper, dst);
+ }
+ }
+ }
+ __put_user(env->fsr, &(mcp->mc_fpregs.mcfpu_fsr));
+ __put_user(env->gsr, &(mcp->mc_fpregs.mcfpu_gsr));
+ __put_user(env->fprs, &(mcp->mc_fpregs.mcfpu_fprs));
+
+ if (err)
+ goto do_sigsegv;
+ unlock_user_struct(ucp, ucp_addr, 1);
+ return;
+do_sigsegv:
+ unlock_user_struct(ucp, ucp_addr, 1);
+ force_sig(TARGET_SIGSEGV);
+}
+#endif
diff --git a/linux-user/sparc64/signal.inc.c b/linux-user/sparc64/signal.inc.c
new file mode 100644
index 0000000000..4fac07ea26
--- /dev/null
+++ b/linux-user/sparc64/signal.inc.c
@@ -0,0 +1 @@
+#include "../sparc/signal.inc.c"
diff --git a/linux-user/tilegx/signal.inc.c b/linux-user/tilegx/signal.inc.c
new file mode 100644
index 0000000000..8db203af0e
--- /dev/null
+++ b/linux-user/tilegx/signal.inc.c
@@ -0,0 +1,163 @@
+
+struct target_sigcontext {
+ union {
+ /* General-purpose registers. */
+ abi_ulong gregs[56];
+ struct {
+ abi_ulong __gregs[53];
+ abi_ulong tp; /* Aliases gregs[TREG_TP]. */
+ abi_ulong sp; /* Aliases gregs[TREG_SP]. */
+ abi_ulong lr; /* Aliases gregs[TREG_LR]. */
+ };
+ };
+ abi_ulong pc; /* Program counter. */
+ abi_ulong ics; /* In Interrupt Critical Section? */
+ abi_ulong faultnum; /* Fault number. */
+ abi_ulong pad[5];
+};
+
+struct target_ucontext {
+ abi_ulong tuc_flags;
+ abi_ulong tuc_link;
+ target_stack_t tuc_stack;
+ struct target_sigcontext tuc_mcontext;
+ target_sigset_t tuc_sigmask; /* mask last for extensibility */
+};
+
+struct target_rt_sigframe {
+ unsigned char save_area[16]; /* caller save area */
+ struct target_siginfo info;
+ struct target_ucontext uc;
+ abi_ulong retcode[2];
+};
+
+#define INSN_MOVELI_R10_139 0x00045fe551483000ULL /* { moveli r10, 139 } */
+#define INSN_SWINT1 0x286b180051485000ULL /* { swint1 } */
+
+
+static void setup_sigcontext(struct target_sigcontext *sc,
+ CPUArchState *env, int signo)
+{
+ int i;
+
+ for (i = 0; i < TILEGX_R_COUNT; ++i) {
+ __put_user(env->regs[i], &sc->gregs[i]);
+ }
+
+ __put_user(env->pc, &sc->pc);
+ __put_user(0, &sc->ics);
+ __put_user(signo, &sc->faultnum);
+}
+
+static void restore_sigcontext(CPUTLGState *env, struct target_sigcontext *sc)
+{
+ int i;
+
+ for (i = 0; i < TILEGX_R_COUNT; ++i) {
+ __get_user(env->regs[i], &sc->gregs[i]);
+ }
+
+ __get_user(env->pc, &sc->pc);
+}
+
+static abi_ulong get_sigframe(struct target_sigaction *ka, CPUArchState *env,
+ size_t frame_size)
+{
+ unsigned long sp = env->regs[TILEGX_R_SP];
+
+ if (on_sig_stack(sp) && !likely(on_sig_stack(sp - frame_size))) {
+ return -1UL;
+ }
+
+ if ((ka->sa_flags & SA_ONSTACK) && !sas_ss_flags(sp)) {
+ sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
+ }
+
+ sp -= frame_size;
+ sp &= -16UL;
+ return sp;
+}
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPUArchState *env)
+{
+ abi_ulong frame_addr;
+ struct target_rt_sigframe *frame;
+ unsigned long restorer;
+
+ frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_rt_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
+
+ /* Always write at least the signal number for the stack backtracer. */
+ if (ka->sa_flags & TARGET_SA_SIGINFO) {
+ /* At sigreturn time, restore the callee-save registers too. */
+ tswap_siginfo(&frame->info, info);
+ /* regs->flags |= PT_FLAGS_RESTORE_REGS; FIXME: we can skip it? */
+ } else {
+ __put_user(info->si_signo, &frame->info.si_signo);
+ }
+
+ /* Create the ucontext. */
+ __put_user(0, &frame->uc.tuc_flags);
+ __put_user(0, &frame->uc.tuc_link);
+ __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
+ __put_user(sas_ss_flags(env->regs[TILEGX_R_SP]),
+ &frame->uc.tuc_stack.ss_flags);
+ __put_user(target_sigaltstack_used.ss_size, &frame->uc.tuc_stack.ss_size);
+ setup_sigcontext(&frame->uc.tuc_mcontext, env, info->si_signo);
+
+ if (ka->sa_flags & TARGET_SA_RESTORER) {
+ restorer = (unsigned long) ka->sa_restorer;
+ } else {
+ __put_user(INSN_MOVELI_R10_139, &frame->retcode[0]);
+ __put_user(INSN_SWINT1, &frame->retcode[1]);
+ restorer = frame_addr + offsetof(struct target_rt_sigframe, retcode);
+ }
+ env->pc = (unsigned long) ka->_sa_handler;
+ env->regs[TILEGX_R_SP] = (unsigned long) frame;
+ env->regs[TILEGX_R_LR] = restorer;
+ env->regs[0] = (unsigned long) sig;
+ env->regs[1] = (unsigned long) &frame->info;
+ env->regs[2] = (unsigned long) &frame->uc;
+ /* regs->flags |= PT_FLAGS_CALLER_SAVES; FIXME: we can skip it? */
+
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+
+give_sigsegv:
+ force_sigsegv(sig);
+}
+
+long do_rt_sigreturn(CPUTLGState *env)
+{
+ abi_ulong frame_addr = env->regs[TILEGX_R_SP];
+ struct target_rt_sigframe *frame;
+ sigset_t set;
+
+ trace_user_do_rt_sigreturn(env, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+ target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
+ set_sigmask(&set);
+
+ restore_sigcontext(env, &frame->uc.tuc_mcontext);
+ if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe,
+ uc.tuc_stack),
+ 0, env->regs[TILEGX_R_SP]) == -EFAULT) {
+ goto badframe;
+ }
+
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+
+ badframe:
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
diff --git a/linux-user/x86_64/signal.inc.c b/linux-user/x86_64/signal.inc.c
new file mode 100644
index 0000000000..902efa8186
--- /dev/null
+++ b/linux-user/x86_64/signal.inc.c
@@ -0,0 +1 @@
+#include "../i386/signal.inc.c"
diff --git a/linux-user/xtensa/signal.inc.c b/linux-user/xtensa/signal.inc.c
new file mode 100644
index 0000000000..56e3195c67
--- /dev/null
+++ b/linux-user/xtensa/signal.inc.c
@@ -0,0 +1,253 @@
+
+struct target_sigcontext {
+ abi_ulong sc_pc;
+ abi_ulong sc_ps;
+ abi_ulong sc_lbeg;
+ abi_ulong sc_lend;
+ abi_ulong sc_lcount;
+ abi_ulong sc_sar;
+ abi_ulong sc_acclo;
+ abi_ulong sc_acchi;
+ abi_ulong sc_a[16];
+ abi_ulong sc_xtregs;
+};
+
+struct target_ucontext {
+ abi_ulong tuc_flags;
+ abi_ulong tuc_link;
+ target_stack_t tuc_stack;
+ struct target_sigcontext tuc_mcontext;
+ target_sigset_t tuc_sigmask;
+};
+
+struct target_rt_sigframe {
+ target_siginfo_t info;
+ struct target_ucontext uc;
+ /* TODO: xtregs */
+ uint8_t retcode[6];
+ abi_ulong window[4];
+};
+
+static abi_ulong get_sigframe(struct target_sigaction *sa,
+ CPUXtensaState *env,
+ unsigned long framesize)
+{
+ abi_ulong sp = env->regs[1];
+
+ /* This is the X/Open sanctioned signal stack switching. */
+ if ((sa->sa_flags & TARGET_SA_ONSTACK) != 0 && !sas_ss_flags(sp)) {
+ sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
+ }
+ return (sp - framesize) & -16;
+}
+
+static int flush_window_regs(CPUXtensaState *env)
+{
+ const uint32_t nareg_mask = env->config->nareg - 1;
+ uint32_t wb = env->sregs[WINDOW_BASE];
+ uint32_t ws = (xtensa_replicate_windowstart(env) >> (wb + 1)) &
+ ((1 << env->config->nareg / 4) - 1);
+ uint32_t d = ctz32(ws) + 1;
+ uint32_t sp;
+ abi_long ret = 0;
+
+ wb += d;
+ ws >>= d;
+
+ xtensa_sync_phys_from_window(env);
+ sp = env->phys_regs[(wb * 4 + 1) & nareg_mask];
+
+ while (ws && ret == 0) {
+ int d;
+ int i;
+ int idx;
+
+ if (ws & 0x1) {
+ ws >>= 1;
+ d = 1;
+ } else if (ws & 0x2) {
+ ws >>= 2;
+ d = 2;
+ for (i = 0; i < 4; ++i) {
+ idx = (wb * 4 + 4 + i) & nareg_mask;
+ ret |= put_user_ual(env->phys_regs[idx], sp + (i - 12) * 4);
+ }
+ } else if (ws & 0x4) {
+ ws >>= 3;
+ d = 3;
+ for (i = 0; i < 8; ++i) {
+ idx = (wb * 4 + 4 + i) & nareg_mask;
+ ret |= put_user_ual(env->phys_regs[idx], sp + (i - 16) * 4);
+ }
+ } else {
+ g_assert_not_reached();
+ }
+ sp = env->phys_regs[((wb + d) * 4 + 1) & nareg_mask];
+ for (i = 0; i < 4; ++i) {
+ idx = (wb * 4 + i) & nareg_mask;
+ ret |= put_user_ual(env->phys_regs[idx], sp + (i - 4) * 4);
+ }
+ wb += d;
+ }
+ return ret == 0;
+}
+
+static int setup_sigcontext(struct target_rt_sigframe *frame,
+ CPUXtensaState *env)
+{
+ struct target_sigcontext *sc = &frame->uc.tuc_mcontext;
+ int i;
+
+ __put_user(env->pc, &sc->sc_pc);
+ __put_user(env->sregs[PS], &sc->sc_ps);
+ __put_user(env->sregs[LBEG], &sc->sc_lbeg);
+ __put_user(env->sregs[LEND], &sc->sc_lend);
+ __put_user(env->sregs[LCOUNT], &sc->sc_lcount);
+ if (!flush_window_regs(env)) {
+ return 0;
+ }
+ for (i = 0; i < 16; ++i) {
+ __put_user(env->regs[i], sc->sc_a + i);
+ }
+ __put_user(0, &sc->sc_xtregs);
+ /* TODO: xtregs */
+ return 1;
+}
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPUXtensaState *env)
+{
+ abi_ulong frame_addr;
+ struct target_rt_sigframe *frame;
+ uint32_t ra;
+ int i;
+
+ frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_rt_frame(env, frame_addr);
+
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
+
+ if (ka->sa_flags & SA_SIGINFO) {
+ tswap_siginfo(&frame->info, info);
+ }
+
+ __put_user(0, &frame->uc.tuc_flags);
+ __put_user(0, &frame->uc.tuc_link);
+ __put_user(target_sigaltstack_used.ss_sp,
+ &frame->uc.tuc_stack.ss_sp);
+ __put_user(sas_ss_flags(env->regs[1]),
+ &frame->uc.tuc_stack.ss_flags);
+ __put_user(target_sigaltstack_used.ss_size,
+ &frame->uc.tuc_stack.ss_size);
+ if (!setup_sigcontext(frame, env)) {
+ unlock_user_struct(frame, frame_addr, 0);
+ goto give_sigsegv;
+ }
+ for (i = 0; i < TARGET_NSIG_WORDS; ++i) {
+ __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
+ }
+
+ if (ka->sa_flags & TARGET_SA_RESTORER) {
+ ra = ka->sa_restorer;
+ } else {
+ ra = frame_addr + offsetof(struct target_rt_sigframe, retcode);
+#ifdef TARGET_WORDS_BIGENDIAN
+ /* Generate instruction: MOVI a2, __NR_rt_sigreturn */
+ __put_user(0x22, &frame->retcode[0]);
+ __put_user(0x0a, &frame->retcode[1]);
+ __put_user(TARGET_NR_rt_sigreturn, &frame->retcode[2]);
+ /* Generate instruction: SYSCALL */
+ __put_user(0x00, &frame->retcode[3]);
+ __put_user(0x05, &frame->retcode[4]);
+ __put_user(0x00, &frame->retcode[5]);
+#else
+ /* Generate instruction: MOVI a2, __NR_rt_sigreturn */
+ __put_user(0x22, &frame->retcode[0]);
+ __put_user(0xa0, &frame->retcode[1]);
+ __put_user(TARGET_NR_rt_sigreturn, &frame->retcode[2]);
+ /* Generate instruction: SYSCALL */
+ __put_user(0x00, &frame->retcode[3]);
+ __put_user(0x50, &frame->retcode[4]);
+ __put_user(0x00, &frame->retcode[5]);
+#endif
+ }
+ env->sregs[PS] = PS_UM | (3 << PS_RING_SHIFT);
+ if (xtensa_option_enabled(env->config, XTENSA_OPTION_WINDOWED_REGISTER)) {
+ env->sregs[PS] |= PS_WOE | (1 << PS_CALLINC_SHIFT);
+ }
+ memset(env->regs, 0, sizeof(env->regs));
+ env->pc = ka->_sa_handler;
+ env->regs[1] = frame_addr;
+ env->sregs[WINDOW_BASE] = 0;
+ env->sregs[WINDOW_START] = 1;
+
+ env->regs[4] = (ra & 0x3fffffff) | 0x40000000;
+ env->regs[6] = sig;
+ env->regs[7] = frame_addr + offsetof(struct target_rt_sigframe, info);
+ env->regs[8] = frame_addr + offsetof(struct target_rt_sigframe, uc);
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+
+give_sigsegv:
+ force_sigsegv(sig);
+ return;
+}
+
+static void restore_sigcontext(CPUXtensaState *env,
+ struct target_rt_sigframe *frame)
+{
+ struct target_sigcontext *sc = &frame->uc.tuc_mcontext;
+ uint32_t ps;
+ int i;
+
+ __get_user(env->pc, &sc->sc_pc);
+ __get_user(ps, &sc->sc_ps);
+ __get_user(env->sregs[LBEG], &sc->sc_lbeg);
+ __get_user(env->sregs[LEND], &sc->sc_lend);
+ __get_user(env->sregs[LCOUNT], &sc->sc_lcount);
+
+ env->sregs[WINDOW_BASE] = 0;
+ env->sregs[WINDOW_START] = 1;
+ env->sregs[PS] = deposit32(env->sregs[PS],
+ PS_CALLINC_SHIFT,
+ PS_CALLINC_LEN,
+ extract32(ps, PS_CALLINC_SHIFT,
+ PS_CALLINC_LEN));
+ for (i = 0; i < 16; ++i) {
+ __get_user(env->regs[i], sc->sc_a + i);
+ }
+ /* TODO: xtregs */
+}
+
+long do_rt_sigreturn(CPUXtensaState *env)
+{
+ abi_ulong frame_addr = env->regs[1];
+ struct target_rt_sigframe *frame;
+ sigset_t set;
+
+ trace_user_do_rt_sigreturn(env, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+ target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
+ set_sigmask(&set);
+
+ restore_sigcontext(env, frame);
+
+ if (do_sigaltstack(frame_addr +
+ offsetof(struct target_rt_sigframe, uc.tuc_stack),
+ 0, get_sp_from_cpustate(env)) == -TARGET_EFAULT) {
+ goto badframe;
+ }
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+badframe:
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
--
2.14.3