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-rw-r--r--absl/debugging/BUILD.bazel2
-rw-r--r--absl/debugging/CMakeLists.txt2
-rw-r--r--absl/debugging/internal/examine_stack.cc30
-rw-r--r--absl/debugging/internal/stacktrace_config.h21
-rw-r--r--absl/debugging/internal/symbolize.h6
-rw-r--r--absl/debugging/symbolize.cc2
-rw-r--r--absl/debugging/symbolize_darwin.inc101
-rw-r--r--absl/debugging/symbolize_test.cc8
8 files changed, 170 insertions, 2 deletions
diff --git a/absl/debugging/BUILD.bazel b/absl/debugging/BUILD.bazel
index 8f521bec..ff627924 100644
--- a/absl/debugging/BUILD.bazel
+++ b/absl/debugging/BUILD.bazel
@@ -55,6 +55,7 @@ cc_library(
name = "symbolize",
srcs = [
"symbolize.cc",
+ "symbolize_darwin.inc",
"symbolize_elf.inc",
"symbolize_unimplemented.inc",
"symbolize_win32.inc",
@@ -77,6 +78,7 @@ cc_library(
"//absl/base:dynamic_annotations",
"//absl/base:malloc_internal",
"//absl/base:raw_logging_internal",
+ "//absl/strings",
],
)
diff --git a/absl/debugging/CMakeLists.txt b/absl/debugging/CMakeLists.txt
index 77336159..995e8887 100644
--- a/absl/debugging/CMakeLists.txt
+++ b/absl/debugging/CMakeLists.txt
@@ -46,6 +46,7 @@ absl_cc_library(
"internal/symbolize.h"
SRCS
"symbolize.cc"
+ "symbolize_darwin.inc"
"symbolize_elf.inc"
"symbolize_unimplemented.inc"
"symbolize_win32.inc"
@@ -63,6 +64,7 @@ absl_cc_library(
absl::dynamic_annotations
absl::malloc_internal
absl::raw_logging_internal
+ absl::strings
PUBLIC
)
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 {
diff --git a/absl/debugging/symbolize.cc b/absl/debugging/symbolize.cc
index 54ed9700..eec7a6e8 100644
--- a/absl/debugging/symbolize.cc
+++ b/absl/debugging/symbolize.cc
@@ -20,6 +20,8 @@
// The Windows Symbolizer only works if PDB files containing the debug info
// are available to the program at runtime.
#include "absl/debugging/symbolize_win32.inc"
+#elif defined(__APPLE__)
+#include "absl/debugging/symbolize_darwin.inc"
#else
#include "absl/debugging/symbolize_unimplemented.inc"
#endif
diff --git a/absl/debugging/symbolize_darwin.inc b/absl/debugging/symbolize_darwin.inc
new file mode 100644
index 00000000..cdadd40e
--- /dev/null
+++ b/absl/debugging/symbolize_darwin.inc
@@ -0,0 +1,101 @@
+// Copyright 2020 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <cxxabi.h>
+#include <execinfo.h>
+
+#include <algorithm>
+#include <cstring>
+
+#include "absl/base/internal/raw_logging.h"
+#include "absl/debugging/internal/demangle.h"
+#include "absl/strings/numbers.h"
+#include "absl/strings/str_cat.h"
+#include "absl/strings/string_view.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+void InitializeSymbolizer(const char*) {}
+
+namespace debugging_internal {
+namespace {
+
+static std::string GetSymbolString(absl::string_view backtrace_line) {
+ // Example Backtrace lines:
+ // 0 libimaging_shared.dylib 0x018c152a
+ // _ZNSt11_Deque_baseIN3nik7mediadb4PageESaIS2_EE17_M_initialize_mapEm + 3478
+ //
+ // or
+ // 0 libimaging_shared.dylib 0x0000000001895c39
+ // _ZN3nik4util19register_shared_ptrINS_3gpu7TextureEEEvPKvS5_ + 39
+ //
+ // or
+ // 0 mysterious_app 0x0124000120120009 main + 17
+ auto address_pos = backtrace_line.find(" 0x");
+ if (address_pos == absl::string_view::npos) return std::string();
+ absl::string_view symbol_view = backtrace_line.substr(address_pos + 1);
+
+ auto space_pos = symbol_view.find(" ");
+ if (space_pos == absl::string_view::npos) return std::string();
+ symbol_view = symbol_view.substr(space_pos + 1); // to mangled symbol
+
+ auto plus_pos = symbol_view.find(" + ");
+ if (plus_pos == absl::string_view::npos) return std::string();
+ symbol_view = symbol_view.substr(0, plus_pos); // strip remainng
+
+ return std::string(symbol_view);
+}
+
+} // namespace
+} // namespace debugging_internal
+
+bool Symbolize(const void* pc, char* out, int out_size) {
+ if (out_size <= 0 || pc == nullptr) {
+ out = nullptr;
+ return false;
+ }
+
+ // This allocates a char* array.
+ char** frame_strings = backtrace_symbols(const_cast<void**>(&pc), 1);
+
+ if (frame_strings == nullptr) return false;
+
+ std::string symbol = debugging_internal::GetSymbolString(frame_strings[0]);
+ free(frame_strings);
+
+ char tmp_buf[1024];
+ if (debugging_internal::Demangle(symbol.c_str(), tmp_buf, sizeof(tmp_buf))) {
+ int len = strlen(tmp_buf);
+ if (len + 1 <= out_size) { // +1 for '\0'
+ assert(len < sizeof(tmp_buf));
+ memmove(out, tmp_buf, len + 1);
+ }
+ } else {
+ strncpy(out, symbol.c_str(), out_size);
+ }
+
+ if (out[out_size - 1] != '\0') {
+ // strncpy() does not '\0' terminate when it truncates.
+ static constexpr char kEllipsis[] = "...";
+ int ellipsis_size = std::min<int>(sizeof(kEllipsis) - 1, out_size - 1);
+ memcpy(out + out_size - ellipsis_size - 1, kEllipsis, ellipsis_size);
+ out[out_size - 1] = '\0';
+ }
+
+ return true;
+}
+
+ABSL_NAMESPACE_END
+} // namespace absl
diff --git a/absl/debugging/symbolize_test.cc b/absl/debugging/symbolize_test.cc
index a1d03aab..e476d82a 100644
--- a/absl/debugging/symbolize_test.cc
+++ b/absl/debugging/symbolize_test.cc
@@ -144,7 +144,8 @@ static const char *TrySymbolize(void *pc) {
return TrySymbolizeWithLimit(pc, sizeof(try_symbolize_buffer));
}
-#ifdef ABSL_INTERNAL_HAVE_ELF_SYMBOLIZE
+#if defined(ABSL_INTERNAL_HAVE_ELF_SYMBOLIZE) || \
+ defined(ABSL_INTERNAL_HAVE_DARWIN_SYMBOLIZE)
TEST(Symbolize, Cached) {
// Compilers should give us pointers to them.
@@ -258,6 +259,7 @@ TEST(Symbolize, SymbolizeWithDemanglingStackConsumption) {
#endif // ABSL_INTERNAL_HAVE_DEBUGGING_STACK_CONSUMPTION
+#ifndef ABSL_INTERNAL_HAVE_DARWIN_SYMBOLIZE
// Use a 64K page size for PPC.
const size_t kPageSize = 64 << 10;
// We place a read-only symbols into the .text section and verify that we can
@@ -413,6 +415,7 @@ TEST(Symbolize, ForEachSection) {
close(fd);
}
+#endif // !ABSL_INTERNAL_HAVE_DARWIN_SYMBOLIZE
// x86 specific tests. Uses some inline assembler.
extern "C" {
@@ -541,7 +544,8 @@ int main(int argc, char **argv) {
absl::InitializeSymbolizer(argv[0]);
testing::InitGoogleTest(&argc, argv);
-#ifdef ABSL_INTERNAL_HAVE_ELF_SYMBOLIZE
+#if defined(ABSL_INTERNAL_HAVE_ELF_SYMBOLIZE) || \
+ defined(ABSL_INTERNAL_HAVE_DARWIN_SYMBOLIZE)
TestWithPCInsideInlineFunction();
TestWithPCInsideNonInlineFunction();
TestWithReturnAddress();
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 12:39:57 +0000