blob: 8d11a202434987acf202a982adc613330d37d9e5 (
plain)
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
|
//===- lib/ReaderWriter/PECOFF/PECOFFTargetInfo.cpp -----------------------===//
//
// The LLVM Linker
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "Atoms.h"
#include "GroupedSectionsPass.h"
#include "IdataPass.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/Path.h"
#include "lld/Core/InputFiles.h"
#include "lld/Core/PassManager.h"
#include "lld/Passes/LayoutPass.h"
#include "lld/ReaderWriter/PECOFFTargetInfo.h"
#include "lld/ReaderWriter/Reader.h"
#include "lld/ReaderWriter/Simple.h"
#include "lld/ReaderWriter/Writer.h"
namespace lld {
namespace {
bool containDirectoryName(StringRef path) {
SmallString<128> smallStr = StringRef(path);
llvm::sys::path::remove_filename(smallStr);
return !smallStr.str().empty();
}
/// An instance of UndefinedSymbolFile has a list of undefined symbols
/// specified by "/include" command line option. This will be added to the
/// input file list to force the core linker to try to resolve the undefined
/// symbols.
class UndefinedSymbolFile : public SimpleFile {
public:
UndefinedSymbolFile(const TargetInfo &ti)
: SimpleFile(ti, "Linker Internal File") {
for (StringRef symbol : ti.initialUndefinedSymbols()) {
UndefinedAtom *atom = new (_alloc) coff::COFFUndefinedAtom(*this, symbol);
addAtom(*atom);
}
};
private:
llvm::BumpPtrAllocator _alloc;
};
} // anonymous namespace
error_code PECOFFTargetInfo::parseFile(
std::unique_ptr<MemoryBuffer> &mb,
std::vector<std::unique_ptr<File>> &result) const {
return _reader->parseFile(mb, result);
}
bool PECOFFTargetInfo::validateImpl(raw_ostream &diagnostics) {
if (_inputFiles.empty()) {
diagnostics << "No input files\n";
return true;
}
if (_stackReserve < _stackCommit) {
diagnostics << "Invalid stack size: reserve size must be equal to or "
<< "greater than commit size, but got "
<< _stackCommit << " and " << _stackReserve << ".\n";
return true;
}
if (_heapReserve < _heapCommit) {
diagnostics << "Invalid heap size: reserve size must be equal to or "
<< "greater than commit size, but got "
<< _heapCommit << " and " << _heapReserve << ".\n";
return true;
}
_reader = createReaderPECOFF(*this);
_writer = createWriterPECOFF(*this);
return false;
}
void PECOFFTargetInfo::addImplicitFiles(InputFiles &files) const {
// Add a pseudo file for "/include" linker option.
auto *file = new (_alloc) UndefinedSymbolFile(*this);
files.prependFile(*file);
}
/// Append the given file to the input file list. The file must be an object
/// file or an import library file.
void PECOFFTargetInfo::appendInputFileOrLibrary(std::string path) {
StringRef ext = llvm::sys::path::extension(path);
// This is an import library file. Look for the library file in the search
// paths, unless the path contains a directory name.
if (ext.equals_lower(".lib")) {
if (containDirectoryName(path)) {
appendInputFile(path);
return;
}
appendLibraryFile(path);
return;
}
// This is an object file otherwise. Add ".obj" extension if the given path
// name has no file extension.
if (ext.empty())
path.append(".obj");
appendInputFile(allocateString(path));
}
/// Try to find the input library file from the search paths and append it to
/// the input file list. Returns true if the library file is found.
void PECOFFTargetInfo::appendLibraryFile(StringRef filename) {
// Current directory always takes precedence over the search paths.
if (llvm::sys::fs::exists(filename)) {
appendInputFile(filename);
return;
}
// Iterate over the search paths.
for (StringRef dir : _inputSearchPaths) {
SmallString<128> path = dir;
llvm::sys::path::append(path, filename);
if (llvm::sys::fs::exists(path.str())) {
appendInputFile(allocateString(path.str()));
return;
}
}
appendInputFile(filename);
}
Writer &PECOFFTargetInfo::writer() const {
return *_writer;
}
ErrorOr<Reference::Kind>
PECOFFTargetInfo::relocKindFromString(StringRef str) const {
return make_error_code(yaml_reader_error::illegal_value);
}
ErrorOr<std::string>
PECOFFTargetInfo::stringFromRelocKind(Reference::Kind kind) const {
return make_error_code(yaml_reader_error::illegal_value);
}
void PECOFFTargetInfo::addPasses(PassManager &pm) const {
pm.add(std::unique_ptr<Pass>(new pecoff::GroupedSectionsPass()));
pm.add(std::unique_ptr<Pass>(new pecoff::IdataPass()));
pm.add(std::unique_ptr<Pass>(new LayoutPass()));
}
} // end namespace lld
|
