diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /security/sandbox/chromium/base/location.cc | |
parent | Initial commit. (diff) | |
download | thunderbird-upstream.tar.xz thunderbird-upstream.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | security/sandbox/chromium/base/location.cc | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/security/sandbox/chromium/base/location.cc b/security/sandbox/chromium/base/location.cc new file mode 100644 index 0000000000..cf189341c7 --- /dev/null +++ b/security/sandbox/chromium/base/location.cc @@ -0,0 +1,96 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "base/location.h" + +#if defined(COMPILER_MSVC) +#include <intrin.h> +#endif + +#include "base/compiler_specific.h" +#include "base/strings/string_number_conversions.h" +#include "base/strings/stringprintf.h" +#include "build/build_config.h" + +namespace base { + +Location::Location() = default; +Location::Location(const Location& other) = default; + +Location::Location(const char* file_name, const void* program_counter) + : file_name_(file_name), program_counter_(program_counter) {} + +Location::Location(const char* function_name, + const char* file_name, + int line_number, + const void* program_counter) + : function_name_(function_name), + file_name_(file_name), + line_number_(line_number), + program_counter_(program_counter) { +#if !defined(OS_NACL) + // The program counter should not be null except in a default constructed + // (empty) Location object. This value is used for identity, so if it doesn't + // uniquely identify a location, things will break. + // + // The program counter isn't supported in NaCl so location objects won't work + // properly in that context. + DCHECK(program_counter); +#endif +} + +std::string Location::ToString() const { + if (has_source_info()) { + return std::string(function_name_) + "@" + file_name_ + ":" + + NumberToString(line_number_); + } + return StringPrintf("pc:%p", program_counter_); +} + +#if defined(COMPILER_MSVC) +#define RETURN_ADDRESS() _ReturnAddress() +#elif defined(COMPILER_GCC) && !defined(OS_NACL) +#define RETURN_ADDRESS() \ + __builtin_extract_return_addr(__builtin_return_address(0)) +#else +#define RETURN_ADDRESS() nullptr +#endif + +// static +NOINLINE Location Location::CreateFromHere(const char* file_name) { + return Location(file_name, RETURN_ADDRESS()); +} + +// static +NOINLINE Location Location::CreateFromHere(const char* function_name, + const char* file_name, + int line_number) { + return Location(function_name, file_name, line_number, RETURN_ADDRESS()); +} + +#if SUPPORTS_LOCATION_BUILTINS && BUILDFLAG(ENABLE_LOCATION_SOURCE) +// static +NOINLINE Location Location::Current(const char* function_name, + const char* file_name, + int line_number) { + return Location(function_name, file_name, line_number, RETURN_ADDRESS()); +} +#elif SUPPORTS_LOCATION_BUILTINS +// static +NOINLINE Location Location::Current(const char* file_name) { + return Location(file_name, RETURN_ADDRESS()); +} +#else +// static +NOINLINE Location Location::Current() { + return Location(nullptr, RETURN_ADDRESS()); +} +#endif + +//------------------------------------------------------------------------------ +NOINLINE const void* GetProgramCounter() { + return RETURN_ADDRESS(); +} + +} // namespace base |