diff options
Diffstat (limited to 'compiler-rt/lib/sanitizer_common/symbolizer/sanitizer_symbolize.cpp')
-rw-r--r-- | compiler-rt/lib/sanitizer_common/symbolizer/sanitizer_symbolize.cpp | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/compiler-rt/lib/sanitizer_common/symbolizer/sanitizer_symbolize.cpp b/compiler-rt/lib/sanitizer_common/symbolizer/sanitizer_symbolize.cpp new file mode 100644 index 000000000000..ba285bc1e884 --- /dev/null +++ b/compiler-rt/lib/sanitizer_common/symbolizer/sanitizer_symbolize.cpp @@ -0,0 +1,80 @@ +//===-- sanitizer_symbolize.cpp ---------------------------------*- C++ -*-===// +// +// 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 +// +//===----------------------------------------------------------------------===// +// +// Implementation of weak hooks from sanitizer_symbolizer_posix_libcdep.cpp. +// +//===----------------------------------------------------------------------===// + +#include <stdio.h> +#include <string> + +#include "llvm/DebugInfo/Symbolize/DIPrinter.h" +#include "llvm/DebugInfo/Symbolize/Symbolize.h" + +static llvm::symbolize::LLVMSymbolizer *getDefaultSymbolizer() { + static llvm::symbolize::LLVMSymbolizer *DefaultSymbolizer = + new llvm::symbolize::LLVMSymbolizer(); + return DefaultSymbolizer; +} + +namespace __sanitizer { +int internal_snprintf(char *buffer, unsigned long length, const char *format, + ...); +} // namespace __sanitizer + +extern "C" { + +typedef uint64_t u64; + +bool __sanitizer_symbolize_code(const char *ModuleName, uint64_t ModuleOffset, + char *Buffer, int MaxLength) { + std::string Result; + { + llvm::raw_string_ostream OS(Result); + llvm::symbolize::DIPrinter Printer(OS); + // TODO: it is neccessary to set proper SectionIndex here. + // object::SectionedAddress::UndefSection works for only absolute addresses. + auto ResOrErr = getDefaultSymbolizer()->symbolizeInlinedCode( + ModuleName, + {ModuleOffset, llvm::object::SectionedAddress::UndefSection}); + Printer << (ResOrErr ? ResOrErr.get() : llvm::DIInliningInfo()); + } + return __sanitizer::internal_snprintf(Buffer, MaxLength, "%s", + Result.c_str()) < MaxLength; +} + +bool __sanitizer_symbolize_data(const char *ModuleName, uint64_t ModuleOffset, + char *Buffer, int MaxLength) { + std::string Result; + { + llvm::raw_string_ostream OS(Result); + llvm::symbolize::DIPrinter Printer(OS); + // TODO: it is neccessary to set proper SectionIndex here. + // object::SectionedAddress::UndefSection works for only absolute addresses. + auto ResOrErr = getDefaultSymbolizer()->symbolizeData( + ModuleName, + {ModuleOffset, llvm::object::SectionedAddress::UndefSection}); + Printer << (ResOrErr ? ResOrErr.get() : llvm::DIGlobal()); + } + return __sanitizer::internal_snprintf(Buffer, MaxLength, "%s", + Result.c_str()) < MaxLength; +} + +void __sanitizer_symbolize_flush() { getDefaultSymbolizer()->flush(); } + +int __sanitizer_symbolize_demangle(const char *Name, char *Buffer, + int MaxLength) { + std::string Result = + llvm::symbolize::LLVMSymbolizer::DemangleName(Name, nullptr); + return __sanitizer::internal_snprintf(Buffer, MaxLength, "%s", + Result.c_str()) < MaxLength + ? static_cast<int>(Result.size() + 1) + : 0; +} + +} // extern "C" |