1 //===- lib/DebugInfo/Symbolize/DIPrinter.cpp ------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the DIPrinter class, which is responsible for printing
11 // structures defined in DebugInfo/DIContext.h
13 //===----------------------------------------------------------------------===//
15 #include "llvm/DebugInfo/Symbolize/DIPrinter.h"
17 #include "llvm/DebugInfo/DIContext.h"
18 #include "llvm/Support/LineIterator.h"
23 // By default, DILineInfo contains "<invalid>" for function/filename it
24 // cannot fetch. We replace it to "??" to make our output closer to addr2line.
25 static const char kDILineInfoBadString[] = "<invalid>";
26 static const char kBadString[] = "??";
28 // Prints source code around in the FileName the Line.
29 void DIPrinter::printContext(std::string FileName, int64_t Line) {
30 if (PrintSourceContext <= 0)
33 ErrorOr<std::unique_ptr<MemoryBuffer>> BufOrErr =
34 MemoryBuffer::getFile(FileName);
38 std::unique_ptr<MemoryBuffer> Buf = std::move(BufOrErr.get());
40 std::max(static_cast<int64_t>(1), Line - PrintSourceContext / 2);
41 int64_t LastLine = FirstLine + PrintSourceContext;
42 size_t MaxLineNumberWidth = std::ceil(std::log10(LastLine));
44 for (line_iterator I = line_iterator(*Buf, false);
45 !I.is_at_eof() && I.line_number() <= LastLine; ++I) {
46 int64_t L = I.line_number();
47 if (L >= FirstLine && L <= LastLine) {
48 OS << format_decimal(L, MaxLineNumberWidth);
58 void DIPrinter::print(const DILineInfo &Info, bool Inlined) {
59 if (PrintFunctionNames) {
60 std::string FunctionName = Info.FunctionName;
61 if (FunctionName == kDILineInfoBadString)
62 FunctionName = kBadString;
64 StringRef Delimiter = (PrintPretty == true) ? " at " : "\n";
65 StringRef Prefix = (PrintPretty && Inlined) ? " (inlined by) " : "";
66 OS << Prefix << FunctionName << Delimiter;
68 std::string Filename = Info.FileName;
69 if (Filename == kDILineInfoBadString)
70 Filename = kBadString;
71 OS << Filename << ":" << Info.Line << ":" << Info.Column << "\n";
72 printContext(Filename, Info.Line);
75 DIPrinter &DIPrinter::operator<<(const DILineInfo &Info) {
80 DIPrinter &DIPrinter::operator<<(const DIInliningInfo &Info) {
81 uint32_t FramesNum = Info.getNumberOfFrames();
83 print(DILineInfo(), false);
86 for (uint32_t i = 0; i < FramesNum; i++)
87 print(Info.getFrame(i), i > 0);
91 DIPrinter &DIPrinter::operator<<(const DIGlobal &Global) {
92 std::string Name = Global.Name;
93 if (Name == kDILineInfoBadString)
96 OS << Global.Start << " " << Global.Size << "\n";