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//===-- 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,
bool SymbolizeInlineFrames) {
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.
if (SymbolizeInlineFrames) {
auto ResOrErr = getDefaultSymbolizer()->symbolizeInlinedCode(
ModuleName,
{ModuleOffset, llvm::object::SectionedAddress::UndefSection});
Printer << (ResOrErr ? ResOrErr.get() : llvm::DIInliningInfo());
} else {
auto ResOrErr = getDefaultSymbolizer()->symbolizeCode(
ModuleName,
{ModuleOffset, llvm::object::SectionedAddress::UndefSection});
Printer << (ResOrErr ? ResOrErr.get() : llvm::DILineInfo());
}
}
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"
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