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Add Arm64 version of breakpad_getcontext for Android.

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This CL adds breakpad_getcontext support for Arm64 to Android. The assembly
is based on getcontext.S in glibc.

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

Review URL: https://breakpad.appspot.com/1384002

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1302 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
rmcilroy@chromium.org 2014-04-03 13:15:37 +00:00
parent 83b9a28cf9
commit 410b7024e3
6 changed files with 140 additions and 25 deletions
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11
src/client/linux/handler/exception_handler.cc
View file

@ -398,8 +398,15 @@ bool ExceptionHandler::HandleSignal(int sig, siginfo_t* info, void* uc) {
CrashContext context;
memcpy(&context.siginfo, info, sizeof(siginfo_t));
memcpy(&context.context, uc, sizeof(struct ucontext));
#if !defined(__ARM_EABI__) && !defined(__aarch64__) && !defined(__mips__)
// FP state is not part of user ABI on ARM or ARM64 Linux.
#if defined(__aarch64__)
struct ucontext *uc_ptr = (struct ucontext*)uc;
struct fpsimd_context *fp_ptr =
(struct fpsimd_context*)&uc_ptr->uc_mcontext.__reserved;
if (fp_ptr->head.magic == FPSIMD_MAGIC) {
memcpy(&context.float_state, fp_ptr, sizeof(context.float_state));
}
#elif !defined(__ARM_EABI__) && !defined(__mips__)
// FP state is not part of user ABI on ARM Linux.
// In case of MIPS Linux FP state is already part of struct ucontext
// and 'float_state' is not a member of CrashContext.
struct ucontext *uc_ptr = (struct ucontext*)uc;