| //===-- sanitizer_symbolizer_markup_fuchsia.cpp ---------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file is shared between various sanitizers' runtime libraries. |
| // |
| // Fuchsia specific implementation of offline markup symbolizer. |
| //===----------------------------------------------------------------------===// |
| #include "sanitizer_platform.h" |
| |
| #if SANITIZER_SYMBOLIZER_MARKUP |
| |
| # include "sanitizer_common.h" |
| # include "sanitizer_stacktrace_printer.h" |
| # include "sanitizer_symbolizer.h" |
| # include "sanitizer_symbolizer_markup.h" |
| # include "sanitizer_symbolizer_markup_constants.h" |
| |
| namespace __sanitizer { |
| |
| // This is used by UBSan for type names, and by ASan for global variable names. |
| // It's expected to return a static buffer that will be reused on each call. |
| const char *Symbolizer::Demangle(const char *name) { |
| static char buffer[kFormatDemangleMax]; |
| internal_snprintf(buffer, sizeof(buffer), kFormatDemangle, name); |
| return buffer; |
| } |
| |
| // This is used mostly for suppression matching. Making it work |
| // would enable "interceptor_via_lib" suppressions. It's also used |
| // once in UBSan to say "in module ..." in a message that also |
| // includes an address in the module, so post-processing can already |
| // pretty-print that so as to indicate the module. |
| bool Symbolizer::GetModuleNameAndOffsetForPC(uptr pc, const char **module_name, |
| uptr *module_address) { |
| return false; |
| } |
| |
| // This is mainly used by hwasan for online symbolization. This isn't needed |
| // since hwasan can always just dump stack frames for offline symbolization. |
| bool Symbolizer::SymbolizeFrame(uptr addr, FrameInfo *info) { return false; } |
| |
| // This is used in some places for suppression checking, which we |
| // don't really support for Fuchsia. It's also used in UBSan to |
| // identify a PC location to a function name, so we always fill in |
| // the function member with a string containing markup around the PC |
| // value. |
| // TODO(mcgrathr): Under SANITIZER_GO, it's currently used by TSan |
| // to render stack frames, but that should be changed to use |
| // RenderStackFrame. |
| SymbolizedStack *Symbolizer::SymbolizePC(uptr addr) { |
| SymbolizedStack *s = SymbolizedStack::New(addr); |
| char buffer[kFormatFunctionMax]; |
| internal_snprintf(buffer, sizeof(buffer), kFormatFunction, addr); |
| s->info.function = internal_strdup(buffer); |
| return s; |
| } |
| |
| // Always claim we succeeded, so that RenderDataInfo will be called. |
| bool Symbolizer::SymbolizeData(uptr addr, DataInfo *info) { |
| info->Clear(); |
| info->start = addr; |
| return true; |
| } |
| |
| // Fuchsia only uses MarkupStackTracePrinter |
| StackTracePrinter *StackTracePrinter::NewStackTracePrinter() { |
| return new (GetGlobalLowLevelAllocator()) MarkupStackTracePrinter(); |
| } |
| |
| void MarkupStackTracePrinter::RenderContext(InternalScopedString *) {} |
| |
| Symbolizer *Symbolizer::PlatformInit() { |
| return new (symbolizer_allocator_) Symbolizer({}); |
| } |
| |
| void Symbolizer::LateInitialize() { Symbolizer::GetOrInit(); } |
| |
| } // namespace __sanitizer |
| |
| #endif // SANITIZER_SYMBOLIZER_MARKUP |