86 lines · cpp
1//===-- sanitizer_symbolizer_markup_fuchsia.cpp ---------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// This file is shared between various sanitizers' runtime libraries.10//11// Fuchsia specific implementation of offline markup symbolizer.12//===----------------------------------------------------------------------===//13#include "sanitizer_platform.h"14 15#if SANITIZER_SYMBOLIZER_MARKUP16 17# include "sanitizer_common.h"18# include "sanitizer_stacktrace_printer.h"19# include "sanitizer_symbolizer.h"20# include "sanitizer_symbolizer_markup.h"21# include "sanitizer_symbolizer_markup_constants.h"22 23namespace __sanitizer {24 25// This is used by UBSan for type names, and by ASan for global variable names.26// It's expected to return a static buffer that will be reused on each call.27const char *Symbolizer::Demangle(const char *name) {28 static char buffer[kFormatDemangleMax];29 internal_snprintf(buffer, sizeof(buffer), kFormatDemangle, name);30 return buffer;31}32 33// This is used mostly for suppression matching. Making it work34// would enable "interceptor_via_lib" suppressions. It's also used35// once in UBSan to say "in module ..." in a message that also36// includes an address in the module, so post-processing can already37// pretty-print that so as to indicate the module.38bool Symbolizer::GetModuleNameAndOffsetForPC(uptr pc, const char **module_name,39 uptr *module_address) {40 return false;41}42 43// This is mainly used by hwasan for online symbolization. This isn't needed44// since hwasan can always just dump stack frames for offline symbolization.45bool Symbolizer::SymbolizeFrame(uptr addr, FrameInfo *info) { return false; }46 47// This is used in some places for suppression checking, which we48// don't really support for Fuchsia. It's also used in UBSan to49// identify a PC location to a function name, so we always fill in50// the function member with a string containing markup around the PC51// value.52// TODO(mcgrathr): Under SANITIZER_GO, it's currently used by TSan53// to render stack frames, but that should be changed to use54// RenderStackFrame.55SymbolizedStack *Symbolizer::SymbolizePC(uptr addr) {56 SymbolizedStack *s = SymbolizedStack::New(addr);57 char buffer[kFormatFunctionMax];58 internal_snprintf(buffer, sizeof(buffer), kFormatFunction, addr);59 s->info.function = internal_strdup(buffer);60 return s;61}62 63// Always claim we succeeded, so that RenderDataInfo will be called.64bool Symbolizer::SymbolizeData(uptr addr, DataInfo *info) {65 info->Clear();66 info->start = addr;67 return true;68}69 70// Fuchsia only uses MarkupStackTracePrinter71StackTracePrinter *StackTracePrinter::NewStackTracePrinter() {72 return new (GetGlobalLowLevelAllocator()) MarkupStackTracePrinter();73}74 75void MarkupStackTracePrinter::RenderContext(InternalScopedString *) {}76 77Symbolizer *Symbolizer::PlatformInit() {78 return new (symbolizer_allocator_) Symbolizer({});79}80 81void Symbolizer::LateInitialize() { Symbolizer::GetOrInit(); }82 83} // namespace __sanitizer84 85#endif // SANITIZER_SYMBOLIZER_MARKUP86