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Fix minidump generation on arm softfp targets.

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Test: arm softfp build, crashed program intentionally with kill -4 and
observed successful minidump generation.
Bug: b/283473162
Change-Id: Id71f92653ced04575ffbb87e309d4139ca34d843
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/4545508
Reviewed-by: Joshua Peraza <jperaza@chromium.org>
This commit is contained in:
Richard Nichols 2023-05-19 17:41:55 +00:00 committed by Joshua Peraza
parent 9f96d5c7b7
commit 8267ac6510
1 changed files with 8 additions and 0 deletions
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8
src/client/linux/minidump_writer/linux_ptrace_dumper.cc
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@ -179,6 +179,13 @@ bool LinuxPtraceDumper::ReadRegisters(ThreadInfo* info, pid_t tid) {
return false; return false;
} }
// When running on arm processors the binary may be built with softfp or
// hardfp. If built with softfp we have no hardware registers to read from,
// so the following read will always fail. gcc defines __SOFTFP__ macro,
// clang13 does not do so. see: https://reviews.llvm.org/D135680.
// If you are using clang and the macro is NOT defined, please include the
// macro define for applicable targets.
#if !defined(__SOFTFP__)
#if !(defined(__ANDROID__) && defined(__ARM_EABI__)) #if !(defined(__ANDROID__) && defined(__ARM_EABI__))
// When running an arm build on an arm64 device, attempting to get the // When running an arm build on an arm64 device, attempting to get the
// floating point registers fails. On Android, the floating point registers // floating point registers fails. On Android, the floating point registers
@ -190,6 +197,7 @@ bool LinuxPtraceDumper::ReadRegisters(ThreadInfo* info, pid_t tid) {
return false; return false;
} }
#endif // !(defined(__ANDROID__) && defined(__ARM_EABI__)) #endif // !(defined(__ANDROID__) && defined(__ARM_EABI__))
#endif // !defined(__SOFTFP__)
return true; return true;
#else // PTRACE_GETREGS #else // PTRACE_GETREGS
return false; return false;