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Use breakpad_getcontext on all Linux platforms missing getcontext

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getcontext is also not available on musl libc, so generalize
breakpad_getcontext so it can be used as a fallback for non-Android
platforms as well.

On x86_64 and i386, ucontext_t uses an Android-specific offset for
storage of FP registers, since its sigset_t differs in size. So,
make the definition of MCONTEXT_FPREGS_MEM and UCONTEXT_FPREGS_MEM_OFFSET
conditional on whether we are building for Android.

On glibc and musl, signal.h and asm/sigcontext.h can't be included
together, so in breakpad_context_unittest.cc, only compare the libc
and kernel _fpstate when on Android.

Bug: google-breakpad:631
Change-Id: If81d73c4101bae946e9a3655b8d1c40a34ab6c38
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/2102135
Reviewed-by: Mike Frysinger <vapier@chromium.org>
This commit is contained in:
Michael Forney 2020-03-16 12:56:56 -07:00 • committed by Mike Frysinger
parent 02b7be4065
commit e780d58fd7
14 changed files with 124 additions and 87 deletions
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2
android/google_breakpad/Android.mk
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@ -81,10 +81,10 @@ LOCAL_SRC_FILES := \
src/client/linux/minidump_writer/linux_ptrace_dumper.cc \
src/client/linux/minidump_writer/minidump_writer.cc \
src/client/minidump_file_writer.cc \
src/common/android/breakpad_getcontext.S \
src/common/convert_UTF.cc \
src/common/md5.cc \
src/common/string_conversion.cc \
src/common/linux/breakpad_getcontext.S \
src/common/linux/elfutils.cc \
src/common/linux/file_id.cc \
src/common/linux/guid_creator.cc \