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Fill in CPU info in mini-dump for Arm64.

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Adds Arm64 varients of CPUFillThreadInfo and CPUFillFromUContext and
WriteCPUInformation for the Linux/Android client.

BUG=354405,335641
R=mark@chromium.org

Review URL: https://breakpad.appspot.com/1464002

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1310 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
rmcilroy@chromium.org 2014-04-11 14:41:14 +00:00
parent 6b0703a093
commit a2245d6744
1 changed files with 54 additions and 13 deletions
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67
src/client/linux/minidump_writer/minidump_writer.cc
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@ -378,12 +378,34 @@ typedef MDRawContextARM64 RawContextCPU;
void CPUFillFromThreadInfo(MDRawContextARM64* out,
const google_breakpad::ThreadInfo& info) {
// TODO(rmcilroy): Implement for arm64.
out->context_flags = MD_CONTEXT_ARM64_FULL;
out->cpsr = static_cast<uint32_t>(info.regs.pstate);
for (int i = 0; i < MD_CONTEXT_ARM64_REG_SP; ++i)
out->iregs[i] = info.regs.regs[i];
out->iregs[MD_CONTEXT_ARM64_REG_SP] = info.regs.sp;
out->iregs[MD_CONTEXT_ARM64_REG_PC] = info.regs.pc;
out->float_save.fpsr = info.fpregs.fpsr;
out->float_save.fpcr = info.fpregs.fpcr;
my_memcpy(&out->float_save.regs, &info.fpregs.vregs,
MD_FLOATINGSAVEAREA_ARM64_FPR_COUNT * 16);
}
void CPUFillFromUContext(MDRawContextARM64* out, const ucontext* uc,
const struct fpsimd_context* fpregs) {
// TODO(rmcilroy): Implement for arm64.
out->context_flags = MD_CONTEXT_ARM64_FULL;
out->cpsr = static_cast<uint32_t>(uc->uc_mcontext.pstate);
for (int i = 0; i < MD_CONTEXT_ARM64_REG_SP; ++i)
out->iregs[i] = uc->uc_mcontext.regs[i];
out->iregs[MD_CONTEXT_ARM64_REG_SP] = uc->uc_mcontext.sp;
out->iregs[MD_CONTEXT_ARM64_REG_PC] = uc->uc_mcontext.pc;
out->float_save.fpsr = fpregs->fpsr;
out->float_save.fpcr = fpregs->fpcr;
my_memcpy(&out->float_save.regs, &fpregs->vregs,
MD_FLOATINGSAVEAREA_ARM64_FPR_COUNT * 16);
}
#elif defined(__mips__)
@ -1328,7 +1350,7 @@ class MinidumpWriter {
bool found;
} cpu_info_table[] = {
{ "processor", -1, false },
#if !defined(__mips__)
#if defined(__i386__) || defined(__x86_64__)
{ "model", 0, false },
{ "stepping", 0, false },
{ "cpu family", 0, false },
@ -1402,7 +1424,7 @@ class MinidumpWriter {
cpu_info_table[0].value++;
sys_info->number_of_processors = cpu_info_table[0].value;
#if !defined(__mips__)
#if defined(__i386__) || defined(__x86_64__)
sys_info->processor_level = cpu_info_table[3].value;
sys_info->processor_revision = cpu_info_table[1].value << 8 |
cpu_info_table[2].value;
@ -1414,7 +1436,7 @@ class MinidumpWriter {
}
return true;
}
#elif defined(__arm__)
#elif defined(__arm__) || defined(__aarch64__)
bool WriteCPUInformation(MDRawSystemInfo* sys_info) {
// The CPUID value is broken up in several entries in /proc/cpuinfo.
// This table is used to rebuild it from the entries.
@ -1436,6 +1458,7 @@ class MinidumpWriter {
const char* tag;
uint32_t hwcaps;
} cpu_features_entries[] = {
#if defined(__arm__)
{ "swp", MD_CPU_ARM_ELF_HWCAP_SWP },
{ "half", MD_CPU_ARM_ELF_HWCAP_HALF },
{ "thumb", MD_CPU_ARM_ELF_HWCAP_THUMB },
@ -1456,10 +1479,18 @@ class MinidumpWriter {
{ "idiva", MD_CPU_ARM_ELF_HWCAP_IDIVA },
{ "idivt", MD_CPU_ARM_ELF_HWCAP_IDIVT },
{ "idiv", MD_CPU_ARM_ELF_HWCAP_IDIVA | MD_CPU_ARM_ELF_HWCAP_IDIVT },
#elif defined(__aarch64__)
// No hwcaps on aarch64.
#endif
};
// processor_architecture should always be set, do this first
sys_info->processor_architecture = MD_CPU_ARCHITECTURE_ARM;
sys_info->processor_architecture =
#if defined(__aarch64__)
MD_CPU_ARCHITECTURE_ARM64;
#else
MD_CPU_ARCHITECTURE_ARM;
#endif
// /proc/cpuinfo is not readable under various sandboxed environments
// (e.g. Android services with the android:isolatedProcess attribute)
@ -1543,13 +1574,14 @@ class MinidumpWriter {
sys_info->cpu.arm_cpu_info.cpuid |=
static_cast<uint32_t>(result);
}
#if defined(__arm__)
// Get the architecture version from the "Processor" field.
// Note that it is also available in the "CPU architecture" field,
// however, some existing kernels are misconfigured and will report
// invalid values here (e.g. 6, while the CPU is ARMv7-A based).
// The "Processor" field doesn't have this issue.
if (!my_strcmp(field, "Processor")) {
unsigned value_len;
size_t value_len;
const char* value = reader->GetValueAndLen(&value_len);
// Expected format: <text> (v<level><endian>)
// Where <text> is some text like "ARMv7 Processor rev 2"
@ -1568,9 +1600,23 @@ class MinidumpWriter {
sys_info->processor_level = static_cast<uint16_t>(arch_level);
}
}
#elif defined(__aarch64__)
// The aarch64 architecture does not provide the architecture level
// in the Processor field, so we instead check the "CPU architecture"
// field.
if (!my_strcmp(field, "CPU architecture")) {
uintptr_t arch_level = 0;
const char* value = reader->GetValue();
const char* p = value;
p = my_read_decimal_ptr(&arch_level, value);
if (p == value)
continue;
sys_info->processor_level = static_cast<uint16_t>(arch_level);
}
#endif
// Rebuild the ELF hwcaps from the 'Features' field.
if (!my_strcmp(field, "Features")) {
unsigned value_len;
size_t value_len;
const char* value = reader->GetValueAndLen(&value_len);
// Parse each space-separated tag.
@ -1605,11 +1651,6 @@ class MinidumpWriter {
return true;
}
#elif defined(__aarch64__)
bool WriteCPUInformation(MDRawSystemInfo* sys_info) {
// TODO(rmcilroy): Implement for arm64.
return false;
}
#else
# error "Unsupported CPU"
#endif