1 //===- lib/DebugInfo/Symbolize/DIPrinter.cpp ------------------------------===//
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 // This file defines the DIPrinter class, which is responsible for printing
11 // structures defined in DebugInfo/DIContext.h
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #include "llvm/DebugInfo/Symbolize/DIPrinter.h"
16 
17 #include "llvm/DebugInfo/DIContext.h"
18 
19 namespace llvm {
20 namespace symbolize {
21 
22 // By default, DILineInfo contains "<invalid>" for function/filename it
23 // cannot fetch. We replace it to "??" to make our output closer to addr2line.
24 static const char kDILineInfoBadString[] = "<invalid>";
25 static const char kBadString[] = "??";
26 
printName(const DILineInfo & Info,bool Inlined)27 void DIPrinter::printName(const DILineInfo &Info, bool Inlined) {
28   if (PrintFunctionNames) {
29     std::string FunctionName = Info.FunctionName;
30     if (FunctionName == kDILineInfoBadString)
31       FunctionName = kBadString;
32 
33     StringRef Delimiter = (PrintPretty == true) ? " at " : "\n";
34     StringRef Prefix = (PrintPretty && Inlined) ? " (inlined by) " : "";
35     OS << Prefix << FunctionName << Delimiter;
36   }
37   std::string Filename = Info.FileName;
38   if (Filename == kDILineInfoBadString)
39     Filename = kBadString;
40   OS << Filename << ":" << Info.Line << ":" << Info.Column << "\n";
41 }
42 
operator <<(const DILineInfo & Info)43 DIPrinter &DIPrinter::operator<<(const DILineInfo &Info) {
44   printName(Info, false);
45   return *this;
46 }
47 
operator <<(const DIInliningInfo & Info)48 DIPrinter &DIPrinter::operator<<(const DIInliningInfo &Info) {
49   uint32_t FramesNum = Info.getNumberOfFrames();
50   if (FramesNum == 0) {
51     printName(DILineInfo(), false);
52     return *this;
53   }
54   for (uint32_t i = 0; i < FramesNum; i++)
55     printName(Info.getFrame(i), i > 0);
56   return *this;
57 }
58 
operator <<(const DIGlobal & Global)59 DIPrinter &DIPrinter::operator<<(const DIGlobal &Global) {
60   std::string Name = Global.Name;
61   if (Name == kDILineInfoBadString)
62     Name = kBadString;
63   OS << Name << "\n";
64   OS << Global.Start << " " << Global.Size << "\n";
65   return *this;
66 }
67 
68 }
69 }
70