forked from OSchip/llvm-project
90 lines
3.4 KiB
C++
90 lines
3.4 KiB
C++
//===-- sanitizer_symbolize.cpp ---------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// Implementation of weak hooks from sanitizer_symbolizer_posix_libcdep.cpp.
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//
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//===----------------------------------------------------------------------===//
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#include <stdio.h>
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#include <string>
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#include "llvm/DebugInfo/Symbolize/DIPrinter.h"
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#include "llvm/DebugInfo/Symbolize/Symbolize.h"
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static llvm::symbolize::LLVMSymbolizer *getDefaultSymbolizer() {
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static llvm::symbolize::LLVMSymbolizer *DefaultSymbolizer =
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new llvm::symbolize::LLVMSymbolizer();
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return DefaultSymbolizer;
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}
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namespace __sanitizer {
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int internal_snprintf(char *buffer, unsigned long length, const char *format,
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...);
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} // namespace __sanitizer
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extern "C" {
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typedef uint64_t u64;
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bool __sanitizer_symbolize_code(const char *ModuleName, uint64_t ModuleOffset,
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char *Buffer, int MaxLength,
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bool SymbolizeInlineFrames) {
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std::string Result;
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{
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llvm::raw_string_ostream OS(Result);
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llvm::symbolize::DIPrinter Printer(OS);
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// TODO: it is neccessary to set proper SectionIndex here.
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// object::SectionedAddress::UndefSection works for only absolute addresses.
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if (SymbolizeInlineFrames) {
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auto ResOrErr = getDefaultSymbolizer()->symbolizeInlinedCode(
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ModuleName,
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{ModuleOffset, llvm::object::SectionedAddress::UndefSection});
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Printer << (ResOrErr ? ResOrErr.get() : llvm::DIInliningInfo());
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} else {
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auto ResOrErr = getDefaultSymbolizer()->symbolizeCode(
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ModuleName,
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{ModuleOffset, llvm::object::SectionedAddress::UndefSection});
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Printer << (ResOrErr ? ResOrErr.get() : llvm::DILineInfo());
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}
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}
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return __sanitizer::internal_snprintf(Buffer, MaxLength, "%s",
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Result.c_str()) < MaxLength;
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}
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bool __sanitizer_symbolize_data(const char *ModuleName, uint64_t ModuleOffset,
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char *Buffer, int MaxLength) {
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std::string Result;
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{
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llvm::raw_string_ostream OS(Result);
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llvm::symbolize::DIPrinter Printer(OS);
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// TODO: it is neccessary to set proper SectionIndex here.
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// object::SectionedAddress::UndefSection works for only absolute addresses.
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auto ResOrErr = getDefaultSymbolizer()->symbolizeData(
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ModuleName,
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{ModuleOffset, llvm::object::SectionedAddress::UndefSection});
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Printer << (ResOrErr ? ResOrErr.get() : llvm::DIGlobal());
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}
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return __sanitizer::internal_snprintf(Buffer, MaxLength, "%s",
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Result.c_str()) < MaxLength;
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}
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void __sanitizer_symbolize_flush() { getDefaultSymbolizer()->flush(); }
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int __sanitizer_symbolize_demangle(const char *Name, char *Buffer,
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int MaxLength) {
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std::string Result =
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llvm::symbolize::LLVMSymbolizer::DemangleName(Name, nullptr);
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return __sanitizer::internal_snprintf(Buffer, MaxLength, "%s",
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Result.c_str()) < MaxLength
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? static_cast<int>(Result.size() + 1)
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: 0;
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}
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} // extern "C"
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