1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
//===- lib/DebugInfo/Symbolize/DIPrinter.cpp ------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file defines the DIPrinter class, which is responsible for printing
// structures defined in DebugInfo/DIContext.h
//
//===----------------------------------------------------------------------===//
#include "llvm/DebugInfo/Symbolize/DIPrinter.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/DebugInfo/DIContext.h"
#include "llvm/Support/ErrorOr.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/LineIterator.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <cmath>
#include <cstddef>
#include <cstdint>
#include <memory>
#include <string>
namespace llvm {
namespace symbolize {
// By default, DILineInfo contains "<invalid>" for function/filename it
// cannot fetch. We replace it to "??" to make our output closer to addr2line.
static const char kDILineInfoBadString[] = "<invalid>";
static const char kBadString[] = "??";
// Prints source code around in the FileName the Line.
void DIPrinter::printContext(const std::string &FileName, int64_t Line) {
if (PrintSourceContext <= 0)
return;
ErrorOr<std::unique_ptr<MemoryBuffer>> BufOrErr =
MemoryBuffer::getFile(FileName);
if (!BufOrErr)
return;
std::unique_ptr<MemoryBuffer> Buf = std::move(BufOrErr.get());
int64_t FirstLine =
std::max(static_cast<int64_t>(1), Line - PrintSourceContext / 2);
int64_t LastLine = FirstLine + PrintSourceContext;
size_t MaxLineNumberWidth = std::ceil(std::log10(LastLine));
for (line_iterator I = line_iterator(*Buf, false);
!I.is_at_eof() && I.line_number() <= LastLine; ++I) {
int64_t L = I.line_number();
if (L >= FirstLine && L <= LastLine) {
OS << format_decimal(L, MaxLineNumberWidth);
if (L == Line)
OS << " >: ";
else
OS << " : ";
OS << *I << "\n";
}
}
}
void DIPrinter::print(const DILineInfo &Info, bool Inlined) {
if (PrintFunctionNames) {
std::string FunctionName = Info.FunctionName;
if (FunctionName == kDILineInfoBadString)
FunctionName = kBadString;
StringRef Delimiter = PrintPretty ? " at " : "\n";
StringRef Prefix = (PrintPretty && Inlined) ? " (inlined by) " : "";
OS << Prefix << FunctionName << Delimiter;
}
std::string Filename = Info.FileName;
if (Filename == kDILineInfoBadString)
Filename = kBadString;
else if (Basenames)
Filename = llvm::sys::path::filename(Filename);
if (!Verbose) {
OS << Filename << ":" << Info.Line;
if (Style == OutputStyle::LLVM)
OS << ":" << Info.Column;
OS << "\n";
printContext(Filename, Info.Line);
return;
}
OS << " Filename: " << Filename << "\n";
if (Info.StartLine)
OS << "Function start line: " << Info.StartLine << "\n";
OS << " Line: " << Info.Line << "\n";
OS << " Column: " << Info.Column << "\n";
if (Info.Discriminator)
OS << " Discriminator: " << Info.Discriminator << "\n";
}
DIPrinter &DIPrinter::operator<<(const DILineInfo &Info) {
print(Info, false);
return *this;
}
DIPrinter &DIPrinter::operator<<(const DIInliningInfo &Info) {
uint32_t FramesNum = Info.getNumberOfFrames();
if (FramesNum == 0) {
print(DILineInfo(), false);
return *this;
}
for (uint32_t i = 0; i < FramesNum; i++)
print(Info.getFrame(i), i > 0);
return *this;
}
DIPrinter &DIPrinter::operator<<(const DIGlobal &Global) {
std::string Name = Global.Name;
if (Name == kDILineInfoBadString)
Name = kBadString;
OS << Name << "\n";
OS << Global.Start << " " << Global.Size << "\n";
return *this;
}
DIPrinter &DIPrinter::operator<<(const DILocal &Local) {
OS << Local.FunctionName << '\n';
OS << Local.Name << '\n';
if (Local.DeclFile.empty())
OS << "??";
else
OS << Local.DeclFile;
OS << ':' << Local.DeclLine << '\n';
if (Local.FrameOffset)
OS << *Local.FrameOffset << ' ';
else
OS << "?? ";
if (Local.Size)
OS << *Local.Size << ' ';
else
OS << "?? ";
if (Local.TagOffset)
OS << *Local.TagOffset << '\n';
else
OS << "??\n";
return *this;
}
} // end namespace symbolize
} // end namespace llvm
|
