diff options
Diffstat (limited to 'absl/debugging/internal')
-rw-r--r-- | absl/debugging/internal/examine_stack.cc | 30 | ||||
-rw-r--r-- | absl/debugging/internal/stacktrace_config.h | 21 | ||||
-rw-r--r-- | absl/debugging/internal/symbolize.h | 6 |
3 files changed, 57 insertions, 0 deletions
diff --git a/absl/debugging/internal/examine_stack.cc b/absl/debugging/internal/examine_stack.cc index a3dd893a..6e5ff1fb 100644 --- a/absl/debugging/internal/examine_stack.cc +++ b/absl/debugging/internal/examine_stack.cc @@ -20,6 +20,10 @@ #include <unistd.h> #endif +#ifdef __APPLE__ +#include <sys/ucontext.h> +#endif + #include <csignal> #include <cstdio> @@ -66,6 +70,32 @@ void* GetProgramCounter(void* vuc) { #error "Undefined Architecture." #endif } +#elif defined(__APPLE__) + if (vuc != nullptr) { + ucontext_t* signal_ucontext = reinterpret_cast<ucontext_t*>(vuc); +#if defined(__aarch64__) + return reinterpret_cast<void*>( + __darwin_arm_thread_state64_get_pc(signal_ucontext->uc_mcontext->__ss)); +#elif defined(__arm__) +#if __DARWIN_UNIX03 + return reinterpret_cast<void*>(signal_ucontext->uc_mcontext->__ss.__pc); +#else + return reinterpret_cast<void*>(signal_ucontext->uc_mcontext->ss.pc); +#endif +#elif defined(__i386__) +#if __DARWIN_UNIX03 + return reinterpret_cast<void*>(signal_ucontext->uc_mcontext->__ss.__eip); +#else + return reinterpret_cast<void*>(signal_ucontext->uc_mcontext->ss.eip); +#endif +#elif defined(__x86_64__) +#if __DARWIN_UNIX03 + return reinterpret_cast<void*>(signal_ucontext->uc_mcontext->__ss.__rip); +#else + return reinterpret_cast<void*>(signal_ucontext->uc_mcontext->ss.rip); +#endif +#endif + } #elif defined(__akaros__) auto* ctx = reinterpret_cast<struct user_context*>(vuc); return reinterpret_cast<void*>(get_user_ctx_pc(ctx)); diff --git a/absl/debugging/internal/stacktrace_config.h b/absl/debugging/internal/stacktrace_config.h index d4e8480a..8caa97c0 100644 --- a/absl/debugging/internal/stacktrace_config.h +++ b/absl/debugging/internal/stacktrace_config.h @@ -28,6 +28,27 @@ #define ABSL_STACKTRACE_INL_HEADER \ "absl/debugging/internal/stacktrace_win32-inl.inc" +#elif defined(__APPLE__) +// Thread local support required for UnwindImpl. +// Notes: +// * Xcode's clang did not support `thread_local` until version 8, and +// even then not for all iOS < 9.0. +// * Xcode 9.3 started disallowing `thread_local` for 32-bit iOS simulator +// targeting iOS 9.x. +// * Xcode 10 moves the deployment target check for iOS < 9.0 to link time +// making __has_feature unreliable there. +// +// Otherwise, `__has_feature` is only supported by Clang so it has be inside +// `defined(__APPLE__)` check. +#if __has_feature(cxx_thread_local) && \ + !(TARGET_OS_IPHONE && __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_9_0) +#define ABSL_STACKTRACE_INL_HEADER \ + "absl/debugging/internal/stacktrace_generic-inl.inc" +#else +#define ABSL_STACKTRACE_INL_HEADER \ + "absl/debugging/internal/stacktrace_unimplemented-inl.inc" +#endif + #elif defined(__linux__) && !defined(__ANDROID__) #if !defined(NO_FRAME_POINTER) diff --git a/absl/debugging/internal/symbolize.h b/absl/debugging/internal/symbolize.h index 5d0858b5..8789e69a 100644 --- a/absl/debugging/internal/symbolize.h +++ b/absl/debugging/internal/symbolize.h @@ -59,6 +59,12 @@ ABSL_NAMESPACE_END #endif // ABSL_INTERNAL_HAVE_ELF_SYMBOLIZE +#ifdef ABSL_INTERNAL_HAVE_DARWIN_SYMBOLIZE +#error ABSL_INTERNAL_HAVE_DARWIN_SYMBOLIZE cannot be directly set +#elif defined(__APPLE__) +#define ABSL_INTERNAL_HAVE_DARWIN_SYMBOLIZE 1 +#endif + namespace absl { ABSL_NAMESPACE_BEGIN namespace debugging_internal { |