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
150
151
152
|
//===------ xcoff2yaml.cpp - XCOFF YAMLIO implementation --------*- 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
//
//===----------------------------------------------------------------------===//
#include "obj2yaml.h"
#include "llvm/Object/XCOFFObjectFile.h"
#include "llvm/ObjectYAML/XCOFFYAML.h"
#include "llvm/Support/Errc.h"
#include "llvm/Support/YAMLTraits.h"
using namespace llvm;
using namespace llvm::object;
namespace {
class XCOFFDumper {
const object::XCOFFObjectFile &Obj;
XCOFFYAML::Object YAMLObj;
void dumpHeader();
Error dumpSections();
Error dumpSymbols();
template <typename Shdr, typename Reloc>
Error dumpSections(ArrayRef<Shdr> Sections);
public:
XCOFFDumper(const object::XCOFFObjectFile &obj) : Obj(obj) {}
Error dump();
XCOFFYAML::Object &getYAMLObj() { return YAMLObj; }
};
} // namespace
Error XCOFFDumper::dump() {
dumpHeader();
if (Error E = dumpSections())
return E;
return dumpSymbols();
}
void XCOFFDumper::dumpHeader() {
YAMLObj.Header.Magic = Obj.getMagic();
YAMLObj.Header.NumberOfSections = Obj.getNumberOfSections();
YAMLObj.Header.TimeStamp = Obj.getTimeStamp();
YAMLObj.Header.SymbolTableOffset = Obj.is64Bit()
? Obj.getSymbolTableOffset64()
: Obj.getSymbolTableOffset32();
YAMLObj.Header.NumberOfSymTableEntries =
Obj.is64Bit() ? Obj.getNumberOfSymbolTableEntries64()
: Obj.getRawNumberOfSymbolTableEntries32();
YAMLObj.Header.AuxHeaderSize = Obj.getOptionalHeaderSize();
YAMLObj.Header.Flags = Obj.getFlags();
}
Error XCOFFDumper::dumpSections() {
if (Obj.is64Bit())
return dumpSections<XCOFFSectionHeader64, XCOFFRelocation64>(
Obj.sections64());
return dumpSections<XCOFFSectionHeader32, XCOFFRelocation32>(
Obj.sections32());
}
template <typename Shdr, typename Reloc>
Error XCOFFDumper::dumpSections(ArrayRef<Shdr> Sections) {
std::vector<XCOFFYAML::Section> &YamlSections = YAMLObj.Sections;
for (const Shdr &S : Sections) {
XCOFFYAML::Section YamlSec;
YamlSec.SectionName = S.getName();
YamlSec.Address = S.PhysicalAddress;
YamlSec.Size = S.SectionSize;
YamlSec.NumberOfRelocations = S.NumberOfRelocations;
YamlSec.NumberOfLineNumbers = S.NumberOfLineNumbers;
YamlSec.FileOffsetToData = S.FileOffsetToRawData;
YamlSec.FileOffsetToRelocations = S.FileOffsetToRelocationInfo;
YamlSec.FileOffsetToLineNumbers = S.FileOffsetToLineNumberInfo;
YamlSec.Flags = S.Flags;
// Dump section data.
if (S.FileOffsetToRawData) {
DataRefImpl SectionDRI;
SectionDRI.p = reinterpret_cast<uintptr_t>(&S);
Expected<ArrayRef<uint8_t>> SecDataRefOrErr =
Obj.getSectionContents(SectionDRI);
if (!SecDataRefOrErr)
return SecDataRefOrErr.takeError();
YamlSec.SectionData = SecDataRefOrErr.get();
}
// Dump relocations.
if (S.NumberOfRelocations) {
auto RelRefOrErr = Obj.relocations<Shdr, Reloc>(S);
if (!RelRefOrErr)
return RelRefOrErr.takeError();
for (const Reloc &R : RelRefOrErr.get()) {
XCOFFYAML::Relocation YamlRel;
YamlRel.Type = R.Type;
YamlRel.Info = R.Info;
YamlRel.SymbolIndex = R.SymbolIndex;
YamlRel.VirtualAddress = R.VirtualAddress;
YamlSec.Relocations.push_back(YamlRel);
}
}
YamlSections.push_back(YamlSec);
}
return Error::success();
}
Error XCOFFDumper::dumpSymbols() {
std::vector<XCOFFYAML::Symbol> &Symbols = YAMLObj.Symbols;
for (const SymbolRef &S : Obj.symbols()) {
DataRefImpl SymbolDRI = S.getRawDataRefImpl();
const XCOFFSymbolRef SymbolEntRef = Obj.toSymbolRef(SymbolDRI);
XCOFFYAML::Symbol Sym;
Expected<StringRef> SymNameRefOrErr = Obj.getSymbolName(SymbolDRI);
if (!SymNameRefOrErr) {
return SymNameRefOrErr.takeError();
}
Sym.SymbolName = SymNameRefOrErr.get();
Sym.Value = SymbolEntRef.getValue();
Expected<StringRef> SectionNameRefOrErr =
Obj.getSymbolSectionName(SymbolEntRef);
if (!SectionNameRefOrErr)
return SectionNameRefOrErr.takeError();
Sym.SectionName = SectionNameRefOrErr.get();
Sym.Type = SymbolEntRef.getSymbolType();
Sym.StorageClass = SymbolEntRef.getStorageClass();
Sym.NumberOfAuxEntries = SymbolEntRef.getNumberOfAuxEntries();
Symbols.push_back(std::move(Sym));
}
return Error::success();
}
Error xcoff2yaml(raw_ostream &Out, const object::XCOFFObjectFile &Obj) {
XCOFFDumper Dumper(Obj);
if (Error E = Dumper.dump())
return E;
yaml::Output Yout(Out);
Yout << Dumper.getYAMLObj();
return Error::success();
}
|
