[Qemu-devel] [PATCHv2 5/6] target-arm: add dump-guest-memory support

[Rabin Vincent]

Enable support for the dump-guest-memory monitor command for ARM.

Cc: Peter Maydell <address@hidden>
Signed-off-by: Rabin Vincent <address@hidden>
---
 configure                |    2 +-
 target-arm/Makefile.objs |    2 +-
 target-arm/arch_dump.c   |   61 ++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 63 insertions(+), 2 deletions(-)
 create mode 100644 target-arm/arch_dump.c

diff --git a/configure b/configure
index 46a7594..f35786d 100755
--- a/configure
+++ b/configure
@@ -4184,7 +4184,7 @@ if test "$target_softmmu" = "yes" ; then
   echo "CONFIG_SOFTMMU=y" >> $config_target_mak
   echo "LIBS+=$libs_softmmu $target_libs_softmmu" >> $config_target_mak
   case "$target_arch2" in
-    i386|x86_64)
+    arm|i386|x86_64)
       echo "CONFIG_HAVE_CORE_DUMP=y" >> $config_target_mak
   esac
 fi
diff --git a/target-arm/Makefile.objs b/target-arm/Makefile.objs
index d89b57c..93baa12 100644
--- a/target-arm/Makefile.objs
+++ b/target-arm/Makefile.objs
@@ -1,5 +1,5 @@
 obj-y += arm-semi.o
-obj-$(CONFIG_SOFTMMU) += machine.o
+obj-$(CONFIG_SOFTMMU) += machine.o arch_dump.o
 obj-$(CONFIG_KVM) += kvm.o
 obj-y += translate.o op_helper.o helper.o cpu.o
 obj-y += neon_helper.o iwmmxt_helper.o
diff --git a/target-arm/arch_dump.c b/target-arm/arch_dump.c
new file mode 100644
index 0000000..e568ffb
--- /dev/null
+++ b/target-arm/arch_dump.c
@@ -0,0 +1,61 @@
+#include "cpu.h"
+#include "sysemu/dump.h"
+#include "elf.h"
+
+typedef struct {
+    char pad1[24];
+    uint32_t pid;
+    char pad2[44];
+    uint32_t regs[18];
+    char pad3[4];
+} arm_elf_prstatus;
+
+int cpu_write_elf64_note(write_core_dump_function f, CPUArchState *env,
+                         int cpuid, void *opaque)
+{
+    return -1;
+}
+
+int cpu_write_elf32_note(write_core_dump_function f, CPUArchState *env,
+                         int cpuid, void *opaque)
+{
+    arm_elf_prstatus prstatus = {.pid = cpuid};
+
+    memcpy(&(prstatus.regs), env->regs, sizeof(env->regs));
+    prstatus.regs[16] = cpsr_read(env);
+
+    return dump_write_elf_note(ELFCLASS32, "CORE", NT_PRSTATUS,
+                               &prstatus, sizeof(prstatus),
+                               f, opaque);
+}
+
+int cpu_write_elf64_qemunote(write_core_dump_function f, CPUArchState *env,
+                             void *opaque)
+{
+    return -1;
+}
+
+int cpu_write_elf32_qemunote(write_core_dump_function f, CPUArchState *env,
+                             void *opaque)
+{
+    return 0;
+}
+
+int cpu_get_dump_info(ArchDumpInfo *info)
+{
+    info->d_machine = EM_ARM;
+#ifdef TARGET_WORDS_BIGENDIAN
+    info->d_endian = ELFDATA2MSB;
+#else
+    info->d_endian = ELFDATA2LSB;
+#endif
+    info->d_class = ELFCLASS32;
+
+    return 0;
+}
+
+ssize_t cpu_get_note_size(int class, int machine, int nr_cpus)
+{
+    return nr_cpus * dump_get_note_size(ELFCLASS32, "CORE",
+                                        sizeof(arm_elf_prstatus));
+}
-- 
1.7.10.4