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
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
//===--- modulewrap_main.cpp - module wrapping utility --------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
//
// Wraps .swiftmodule files inside an object file container so they
// can be passed to the linker directly. Mostly useful for platforms
// where the debug info typically stays in the executable.
// (ie. ELF-based platforms).
//
//===----------------------------------------------------------------------===//
#include "swift/AST/DiagnosticsFrontend.h"
#include "swift/Basic/LLVMInitialize.h"
#include "swift/Frontend/Frontend.h"
#include "swift/Frontend/PrintingDiagnosticConsumer.h"
#include "swift/Option/Options.h"
#include "swift/Serialization/Validation.h"
#include "swift/SIL/SILModule.h"
#include "swift/SIL/TypeLowering.h"
#include "swift/Subsystems.h"
#include "swift/SymbolGraphGen/SymbolGraphOptions.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/IntrusiveRefCntPtr.h"
#include "llvm/Bitstream/BitstreamReader.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Option/Option.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/VirtualOutputBackends.h"
using namespace llvm::opt;
using namespace swift;
class ModuleWrapInvocation {
private:
std::string MainExecutablePath;
std::string OutputFilename = "-";
llvm::Triple TargetTriple;
std::vector<std::string> InputFilenames;
bool UseSharedResourceFolder = true;
bool EnableObjCInterop = true;
public:
bool hasSingleInput() const { return InputFilenames.size() == 1; }
const std::string &getFilenameOfFirstInput() const {
return InputFilenames[0];
}
void setMainExecutablePath(const std::string &Path) {
MainExecutablePath = Path;
}
const std::string &getOutputFilename() { return OutputFilename; }
const std::vector<std::string> &getInputFilenames() { return InputFilenames; }
llvm::Triple &getTargetTriple() { return TargetTriple; }
bool useSharedResourceFolder() { return UseSharedResourceFolder; }
bool enableObjCInterop() { return EnableObjCInterop; }
int parseArgs(llvm::ArrayRef<const char *> Args, DiagnosticEngine &Diags) {
using namespace options;
// Parse frontend command line options using Swift's option table.
std::unique_ptr<llvm::opt::OptTable> Table = createSwiftOptTable();
unsigned MissingIndex;
unsigned MissingCount;
llvm::opt::InputArgList ParsedArgs =
Table->ParseArgs(Args, MissingIndex, MissingCount,
ModuleWrapOption);
if (MissingCount) {
Diags.diagnose(SourceLoc(), diag::error_missing_arg_value,
ParsedArgs.getArgString(MissingIndex), MissingCount);
return 1;
}
if (const Arg *A = ParsedArgs.getLastArg(options::OPT_target))
TargetTriple = llvm::Triple(llvm::Triple::normalize(A->getValue()));
else
TargetTriple = llvm::Triple(llvm::sys::getDefaultTargetTriple());
if (ParsedArgs.hasArg(OPT_UNKNOWN)) {
for (const Arg *A : ParsedArgs.filtered(OPT_UNKNOWN)) {
Diags.diagnose(SourceLoc(), diag::error_unknown_arg,
A->getAsString(ParsedArgs));
}
return true;
}
if (ParsedArgs.getLastArg(OPT_help)) {
std::string ExecutableName =
llvm::sys::path::stem(MainExecutablePath).str();
Table->printHelp(llvm::outs(), ExecutableName.c_str(),
"Swift Module Wrapper", options::ModuleWrapOption, 0,
/*ShowAllAliases*/false);
return 1;
}
for (const Arg *A : ParsedArgs.filtered(OPT_INPUT)) {
InputFilenames.push_back(A->getValue());
}
if (InputFilenames.empty()) {
Diags.diagnose(SourceLoc(), diag::error_mode_requires_an_input_file);
return 1;
}
if (const Arg *A = ParsedArgs.getLastArg(OPT_o)) {
OutputFilename = A->getValue();
}
if (ParsedArgs.hasFlag(OPT_static_executable, OPT_no_static_executable,
false) ||
ParsedArgs.hasFlag(OPT_static_stdlib, OPT_no_static_stdlib, false) ||
ParsedArgs.hasArg(OPT_static)) {
UseSharedResourceFolder = false;
}
EnableObjCInterop = ParsedArgs.hasFlag(OPT_enable_objc_interop,
OPT_disable_objc_interop, TargetTriple.isOSDarwin());
return 0;
}
};
int modulewrap_main(ArrayRef<const char *> Args, const char *Argv0,
void *MainAddr) {
INITIALIZE_LLVM();
CompilerInstance Instance;
PrintingDiagnosticConsumer PDC;
Instance.addDiagnosticConsumer(&PDC);
ModuleWrapInvocation Invocation;
std::string MainExecutablePath =
llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
Invocation.setMainExecutablePath(MainExecutablePath);
// Parse arguments.
if (Invocation.parseArgs(Args, Instance.getDiags()) != 0) {
return 1;
}
if (!Invocation.hasSingleInput()) {
Instance.getDiags().diagnose(SourceLoc(),
diag::error_mode_requires_one_input_file);
return 1;
}
StringRef Filename = Invocation.getFilenameOfFirstInput();
auto ErrOrBuf = llvm::MemoryBuffer::getFile(Filename);
if (!ErrOrBuf) {
Instance.getDiags().diagnose(
SourceLoc(), diag::error_no_such_file_or_directory, Filename);
return 1;
}
// Superficially verify that the input is a swift module file.
if (!serialization::isSerializedAST(ErrOrBuf.get()->getBuffer())) {
Instance.getDiags().diagnose(SourceLoc(), diag::error_parse_input_file,
Filename, "signature mismatch");
return 1;
}
// Wrap the bitstream in a module object file. To use the ClangImporter to
// create the module loader, we need to properly set the runtime library path.
SearchPathOptions SearchPathOpts;
SmallString<128> RuntimeResourcePath;
CompilerInvocation::computeRuntimeResourcePathFromExecutablePath(
MainExecutablePath, Invocation.useSharedResourceFolder(),
RuntimeResourcePath);
SearchPathOpts.RuntimeResourcePath = std::string(RuntimeResourcePath.str());
SourceManager SrcMgr;
SILOptions SILOpts;
TypeCheckerOptions TypeCheckOpts;
LangOptions LangOpts;
ClangImporterOptions ClangImporterOpts;
symbolgraphgen::SymbolGraphOptions SymbolGraphOpts;
CASOptions CASOpts;
LangOpts.Target = Invocation.getTargetTriple();
LangOpts.EnableObjCInterop = Invocation.enableObjCInterop();
ASTContext &ASTCtx = *ASTContext::get(
LangOpts, TypeCheckOpts, SILOpts, SearchPathOpts, ClangImporterOpts,
SymbolGraphOpts, CASOpts, SrcMgr, Instance.getDiags(),
llvm::makeIntrusiveRefCnt<llvm::vfs::OnDiskOutputBackend>());
registerParseRequestFunctions(ASTCtx.evaluator);
registerTypeCheckerRequestFunctions(ASTCtx.evaluator);
ASTCtx.addModuleLoader(ClangImporter::create(ASTCtx, ""), true);
ModuleDecl *M = ModuleDecl::create(ASTCtx.getIdentifier("swiftmodule"), ASTCtx);
std::unique_ptr<Lowering::TypeConverter> TC(
new Lowering::TypeConverter(*M, ASTCtx.SILOpts.EnableSILOpaqueValues));
std::unique_ptr<SILModule> SM = SILModule::createEmptyModule(M, *TC, SILOpts);
createSwiftModuleObjectFile(*SM, (*ErrOrBuf)->getBuffer(),
Invocation.getOutputFilename());
return 0;
}
|
