1 //===-- sanitizer_symbolize.cc ----------------------------------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // Implementation of weak hooks from sanitizer_symbolizer_posix_libcdep.cc.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include <stdio.h>
15 #include <string>
16
17 #include "llvm/DebugInfo/Symbolize/DIPrinter.h"
18 #include "llvm/DebugInfo/Symbolize/Symbolize.h"
19
getDefaultSymbolizer()20 static llvm::symbolize::LLVMSymbolizer *getDefaultSymbolizer() {
21 static llvm::symbolize::LLVMSymbolizer *DefaultSymbolizer =
22 new llvm::symbolize::LLVMSymbolizer();
23 return DefaultSymbolizer;
24 }
25
26 namespace __sanitizer {
27 int internal_snprintf(char *buffer, unsigned long length, const char *format,
28 ...);
29 } // namespace __sanitizer
30
31 extern "C" {
32
33 typedef uint64_t u64;
34
__sanitizer_symbolize_code(const char * ModuleName,uint64_t ModuleOffset,char * Buffer,int MaxLength)35 bool __sanitizer_symbolize_code(const char *ModuleName, uint64_t ModuleOffset,
36 char *Buffer, int MaxLength) {
37 std::string Result;
38 {
39 llvm::raw_string_ostream OS(Result);
40 llvm::symbolize::DIPrinter Printer(OS);
41 auto ResOrErr =
42 getDefaultSymbolizer()->symbolizeInlinedCode(ModuleName, ModuleOffset);
43 Printer << (ResOrErr ? ResOrErr.get() : llvm::DIInliningInfo());
44 }
45 return __sanitizer::internal_snprintf(Buffer, MaxLength, "%s",
46 Result.c_str()) < MaxLength;
47 }
48
__sanitizer_symbolize_data(const char * ModuleName,uint64_t ModuleOffset,char * Buffer,int MaxLength)49 bool __sanitizer_symbolize_data(const char *ModuleName, uint64_t ModuleOffset,
50 char *Buffer, int MaxLength) {
51 std::string Result;
52 {
53 llvm::raw_string_ostream OS(Result);
54 llvm::symbolize::DIPrinter Printer(OS);
55 auto ResOrErr =
56 getDefaultSymbolizer()->symbolizeData(ModuleName, ModuleOffset);
57 Printer << (ResOrErr ? ResOrErr.get() : llvm::DIGlobal());
58 }
59 return __sanitizer::internal_snprintf(Buffer, MaxLength, "%s",
60 Result.c_str()) < MaxLength;
61 }
62
__sanitizer_symbolize_flush()63 void __sanitizer_symbolize_flush() { getDefaultSymbolizer()->flush(); }
64
__sanitizer_symbolize_demangle(const char * Name,char * Buffer,int MaxLength)65 int __sanitizer_symbolize_demangle(const char *Name, char *Buffer,
66 int MaxLength) {
67 std::string Result =
68 llvm::symbolize::LLVMSymbolizer::DemangleName(Name, nullptr);
69 return __sanitizer::internal_snprintf(Buffer, MaxLength, "%s",
70 Result.c_str()) < MaxLength
71 ? static_cast<int>(Result.size() + 1)
72 : 0;
73 }
74
75 } // extern "C"
76