[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH v4 1/4] linux-user: Add support for MIPS64
From: |
khansa |
Subject: |
[Qemu-devel] [PATCH v4 1/4] linux-user: Add support for MIPS64 |
Date: |
Tue, 3 Jan 2012 09:54:15 +0500 |
From: Khansa Butt <address@hidden>
This patch incorporates
1)default configs for mips64
2)updated target-list with mips64-linux-user
3)syscall differences: Linux 64-bit syscalls have different number range and
because of n64 ABI, 8 argument registers are suffient for do_syscall()
4)define TARGET_QEMU_ESIGRETURN for mips64
Signed-off-by: Khansa Butt <address@hidden>
---
configure | 1 +
default-configs/mips64-linux-user.mak | 1 +
linux-user/main.c | 21 +++++++++++++++++++--
linux-user/mips64/syscall.h | 2 ++
4 files changed, 23 insertions(+), 2 deletions(-)
create mode 100644 default-configs/mips64-linux-user.mak
diff --git a/configure b/configure
index 640e815..9d5546a 100755
--- a/configure
+++ b/configure
@@ -915,6 +915,7 @@ microblaze-linux-user \
microblazeel-linux-user \
mips-linux-user \
mipsel-linux-user \
+mips64-linux-user \
ppc-linux-user \
ppc64-linux-user \
ppc64abi32-linux-user \
diff --git a/default-configs/mips64-linux-user.mak
b/default-configs/mips64-linux-user.mak
new file mode 100644
index 0000000..1598bfc
--- /dev/null
+++ b/default-configs/mips64-linux-user.mak
@@ -0,0 +1 @@
+# Default configuration for mips64-linux-user
diff --git a/linux-user/main.c b/linux-user/main.c
index 64d2208..f9cc71e 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -2157,7 +2157,8 @@ static int do_store_exclusive(CPUMIPSState *env)
void cpu_loop(CPUMIPSState *env)
{
target_siginfo_t info;
- int trapnr, ret;
+ int trapnr;
+ abi_long ret;
unsigned int syscall_num;
for(;;) {
@@ -2166,8 +2167,23 @@ void cpu_loop(CPUMIPSState *env)
cpu_exec_end(env);
switch(trapnr) {
case EXCP_SYSCALL:
- syscall_num = env->active_tc.gpr[2] - 4000;
env->active_tc.PC += 4;
+#if defined(TARGET_ABI_MIPSN64)
+ syscall_num = env->active_tc.gpr[2] - 5000;
+ /* MIPS64 has eight argument registers so there is
+ * no need to get arguments from stack
+ */
+ ret = do_syscall(env, env->active_tc.gpr[2],
+ env->active_tc.gpr[4],
+ env->active_tc.gpr[5],
+ env->active_tc.gpr[6],
+ env->active_tc.gpr[7],
+ env->active_tc.gpr[8],
+ env->active_tc.gpr[9],
+ env->active_tc.gpr[10],
+ env->active_tc.gpr[11]);
+#else
+ syscall_num = env->active_tc.gpr[2] - 4000;
if (syscall_num >= sizeof(mips_syscall_args)) {
ret = -TARGET_ENOSYS;
} else {
@@ -2205,6 +2221,7 @@ void cpu_loop(CPUMIPSState *env)
env->active_tc.gpr[7],
arg5, arg6, arg7, arg8);
}
+#endif
done_syscall:
if (ret == -TARGET_QEMU_ESIGRETURN) {
/* Returning from a successful sigreturn syscall.
diff --git a/linux-user/mips64/syscall.h b/linux-user/mips64/syscall.h
index 668a2b9..96f03da 100644
--- a/linux-user/mips64/syscall.h
+++ b/linux-user/mips64/syscall.h
@@ -218,4 +218,6 @@ struct target_pt_regs {
+#define TARGET_QEMU_ESIGRETURN 255
+
#define UNAME_MACHINE "mips64"
--
1.7.3.4