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IRObjectFile.cpp (276479) IRObjectFile.cpp (280031)
1//===- IRObjectFile.cpp - IR object file implementation ---------*- C++ -*-===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// Part of the IRObjectFile class implementation.
11//
12//===----------------------------------------------------------------------===//
13
14#include "llvm/Object/IRObjectFile.h"
15#include "RecordStreamer.h"
16#include "llvm/Bitcode/ReaderWriter.h"
1//===- IRObjectFile.cpp - IR object file implementation ---------*- C++ -*-===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// Part of the IRObjectFile class implementation.
11//
12//===----------------------------------------------------------------------===//
13
14#include "llvm/Object/IRObjectFile.h"
15#include "RecordStreamer.h"
16#include "llvm/Bitcode/ReaderWriter.h"
17#include "llvm/IR/LLVMContext.h"
18#include "llvm/IR/GVMaterializer.h"
17#include "llvm/IR/GVMaterializer.h"
18#include "llvm/IR/LLVMContext.h"
19#include "llvm/IR/Mangler.h"
20#include "llvm/IR/Module.h"
19#include "llvm/IR/Mangler.h"
20#include "llvm/IR/Module.h"
21#include "llvm/MC/MCRegisterInfo.h"
22#include "llvm/MC/MCAsmInfo.h"
23#include "llvm/MC/MCContext.h"
24#include "llvm/MC/MCInstrInfo.h"
25#include "llvm/MC/MCObjectFileInfo.h"
21#include "llvm/MC/MCAsmInfo.h"
22#include "llvm/MC/MCContext.h"
23#include "llvm/MC/MCInstrInfo.h"
24#include "llvm/MC/MCObjectFileInfo.h"
26#include "llvm/MC/MCTargetAsmParser.h"
27#include "llvm/MC/MCParser/MCAsmParser.h"
25#include "llvm/MC/MCParser/MCAsmParser.h"
26#include "llvm/MC/MCRegisterInfo.h"
27#include "llvm/MC/MCTargetAsmParser.h"
28#include "llvm/Object/ObjectFile.h"
28#include "llvm/Support/MemoryBuffer.h"
29#include "llvm/Support/SourceMgr.h"
30#include "llvm/Support/TargetRegistry.h"
31#include "llvm/Support/raw_ostream.h"
32using namespace llvm;
33using namespace object;
34
29#include "llvm/Support/MemoryBuffer.h"
30#include "llvm/Support/SourceMgr.h"
31#include "llvm/Support/TargetRegistry.h"
32#include "llvm/Support/raw_ostream.h"
33using namespace llvm;
34using namespace object;
35
35IRObjectFile::IRObjectFile(std::unique_ptr<MemoryBuffer> Object,
36 std::unique_ptr<Module> Mod)
37 : SymbolicFile(Binary::ID_IR, std::move(Object)), M(std::move(Mod)) {
36IRObjectFile::IRObjectFile(MemoryBufferRef Object, std::unique_ptr<Module> Mod)
37 : SymbolicFile(Binary::ID_IR, Object), M(std::move(Mod)) {
38 // If we have a DataLayout, setup a mangler.
39 const DataLayout *DL = M->getDataLayout();
40 if (!DL)
41 return;
42
43 Mang.reset(new Mangler(DL));
44
45 const std::string &InlineAsm = M->getModuleInlineAsm();

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71
72 MCObjectFileInfo MOFI;
73 MCContext MCCtx(MAI.get(), MRI.get(), &MOFI);
74 MOFI.InitMCObjectFileInfo(Triple, Reloc::Default, CodeModel::Default, MCCtx);
75 std::unique_ptr<RecordStreamer> Streamer(new RecordStreamer(MCCtx));
76
77 std::unique_ptr<MemoryBuffer> Buffer(MemoryBuffer::getMemBuffer(InlineAsm));
78 SourceMgr SrcMgr;
38 // If we have a DataLayout, setup a mangler.
39 const DataLayout *DL = M->getDataLayout();
40 if (!DL)
41 return;
42
43 Mang.reset(new Mangler(DL));
44
45 const std::string &InlineAsm = M->getModuleInlineAsm();

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71
72 MCObjectFileInfo MOFI;
73 MCContext MCCtx(MAI.get(), MRI.get(), &MOFI);
74 MOFI.InitMCObjectFileInfo(Triple, Reloc::Default, CodeModel::Default, MCCtx);
75 std::unique_ptr<RecordStreamer> Streamer(new RecordStreamer(MCCtx));
76
77 std::unique_ptr<MemoryBuffer> Buffer(MemoryBuffer::getMemBuffer(InlineAsm));
78 SourceMgr SrcMgr;
79 SrcMgr.AddNewSourceBuffer(Buffer.release(), SMLoc());
79 SrcMgr.AddNewSourceBuffer(std::move(Buffer), SMLoc());
80 std::unique_ptr<MCAsmParser> Parser(
81 createMCAsmParser(SrcMgr, MCCtx, *Streamer, *MAI));
82
83 MCTargetOptions MCOptions;
84 std::unique_ptr<MCTargetAsmParser> TAP(
85 T->createMCAsmParser(*STI, *Parser, *MCII, MCOptions));
86 if (!TAP)
87 return;

--- 21 unchanged lines hidden (view full) ---

109 break;
110 }
111 AsmSymbols.push_back(
112 std::make_pair<std::string, uint32_t>(Key, std::move(Res)));
113 }
114}
115
116IRObjectFile::~IRObjectFile() {
80 std::unique_ptr<MCAsmParser> Parser(
81 createMCAsmParser(SrcMgr, MCCtx, *Streamer, *MAI));
82
83 MCTargetOptions MCOptions;
84 std::unique_ptr<MCTargetAsmParser> TAP(
85 T->createMCAsmParser(*STI, *Parser, *MCII, MCOptions));
86 if (!TAP)
87 return;

--- 21 unchanged lines hidden (view full) ---

109 break;
110 }
111 AsmSymbols.push_back(
112 std::make_pair<std::string, uint32_t>(Key, std::move(Res)));
113 }
114}
115
116IRObjectFile::~IRObjectFile() {
117 GVMaterializer *GVM = M->getMaterializer();
118 if (GVM)
119 GVM->releaseBuffer();
120 }
121
117 }
118
122static const GlobalValue *getGV(DataRefImpl &Symb) {
119static GlobalValue *getGV(DataRefImpl &Symb) {
123 if ((Symb.p & 3) == 3)
124 return nullptr;
125
126 return reinterpret_cast<GlobalValue*>(Symb.p & ~uintptr_t(3));
127}
128
129static uintptr_t skipEmpty(Module::const_alias_iterator I, const Module &M) {
130 if (I == M.alias_end())

--- 48 unchanged lines hidden (view full) ---

179 }
180 case 3: {
181 unsigned Index = getAsmSymIndex(Symb);
182 assert(Index < AsmSymbols.size());
183 ++Index;
184 Res = (Index << 2) | 3;
185 break;
186 }
120 if ((Symb.p & 3) == 3)
121 return nullptr;
122
123 return reinterpret_cast<GlobalValue*>(Symb.p & ~uintptr_t(3));
124}
125
126static uintptr_t skipEmpty(Module::const_alias_iterator I, const Module &M) {
127 if (I == M.alias_end())

--- 48 unchanged lines hidden (view full) ---

176 }
177 case 3: {
178 unsigned Index = getAsmSymIndex(Symb);
179 assert(Index < AsmSymbols.size());
180 ++Index;
181 Res = (Index << 2) | 3;
182 break;
183 }
184 default:
185 llvm_unreachable("unreachable case");
187 }
188
189 Symb.p = Res;
190}
191
192std::error_code IRObjectFile::printSymbolName(raw_ostream &OS,
193 DataRefImpl Symb) const {
194 const GlobalValue *GV = getGV(Symb);

--- 7 unchanged lines hidden (view full) ---

202 if (Mang)
203 Mang->getNameWithPrefix(OS, GV, false);
204 else
205 OS << GV->getName();
206
207 return object_error::success;
208}
209
186 }
187
188 Symb.p = Res;
189}
190
191std::error_code IRObjectFile::printSymbolName(raw_ostream &OS,
192 DataRefImpl Symb) const {
193 const GlobalValue *GV = getGV(Symb);

--- 7 unchanged lines hidden (view full) ---

201 if (Mang)
202 Mang->getNameWithPrefix(OS, GV, false);
203 else
204 OS << GV->getName();
205
206 return object_error::success;
207}
208
210static bool isDeclaration(const GlobalValue &V) {
211 if (V.hasAvailableExternallyLinkage())
212 return true;
213
214 if (V.isMaterializable())
215 return false;
216
217 return V.isDeclaration();
218}
219
220uint32_t IRObjectFile::getSymbolFlags(DataRefImpl Symb) const {
221 const GlobalValue *GV = getGV(Symb);
222
223 if (!GV) {
224 unsigned Index = getAsmSymIndex(Symb);
225 assert(Index <= AsmSymbols.size());
226 return AsmSymbols[Index].second;
227 }
228
229 uint32_t Res = BasicSymbolRef::SF_None;
209uint32_t IRObjectFile::getSymbolFlags(DataRefImpl Symb) const {
210 const GlobalValue *GV = getGV(Symb);
211
212 if (!GV) {
213 unsigned Index = getAsmSymIndex(Symb);
214 assert(Index <= AsmSymbols.size());
215 return AsmSymbols[Index].second;
216 }
217
218 uint32_t Res = BasicSymbolRef::SF_None;
230 if (isDeclaration(*GV))
219 if (GV->isDeclarationForLinker())
231 Res |= BasicSymbolRef::SF_Undefined;
232 if (GV->hasPrivateLinkage())
233 Res |= BasicSymbolRef::SF_FormatSpecific;
234 if (!GV->hasLocalLinkage())
235 Res |= BasicSymbolRef::SF_Global;
236 if (GV->hasCommonLinkage())
237 Res |= BasicSymbolRef::SF_Common;
238 if (GV->hasLinkOnceLinkage() || GV->hasWeakLinkage())

--- 4 unchanged lines hidden (view full) ---

243 else if (auto *Var = dyn_cast<GlobalVariable>(GV)) {
244 if (Var->getSection() == StringRef("llvm.metadata"))
245 Res |= BasicSymbolRef::SF_FormatSpecific;
246 }
247
248 return Res;
249}
250
220 Res |= BasicSymbolRef::SF_Undefined;
221 if (GV->hasPrivateLinkage())
222 Res |= BasicSymbolRef::SF_FormatSpecific;
223 if (!GV->hasLocalLinkage())
224 Res |= BasicSymbolRef::SF_Global;
225 if (GV->hasCommonLinkage())
226 Res |= BasicSymbolRef::SF_Common;
227 if (GV->hasLinkOnceLinkage() || GV->hasWeakLinkage())

--- 4 unchanged lines hidden (view full) ---

232 else if (auto *Var = dyn_cast<GlobalVariable>(GV)) {
233 if (Var->getSection() == StringRef("llvm.metadata"))
234 Res |= BasicSymbolRef::SF_FormatSpecific;
235 }
236
237 return Res;
238}
239
251const GlobalValue *IRObjectFile::getSymbolGV(DataRefImpl Symb) const {
252 const GlobalValue *GV = getGV(Symb);
253 return GV;
254}
240GlobalValue *IRObjectFile::getSymbolGV(DataRefImpl Symb) { return getGV(Symb); }
255
241
242std::unique_ptr<Module> IRObjectFile::takeModule() { return std::move(M); }
243
256basic_symbol_iterator IRObjectFile::symbol_begin_impl() const {
257 Module::const_iterator I = M->begin();
258 DataRefImpl Ret;
259 Ret.p = skipEmpty(I, *M);
260 return basic_symbol_iterator(BasicSymbolRef(Ret, this));
261}
262
263basic_symbol_iterator IRObjectFile::symbol_end_impl() const {
264 DataRefImpl Ret;
265 uint64_t NumAsm = AsmSymbols.size();
266 NumAsm <<= 2;
267 Ret.p = 3 | NumAsm;
268 return basic_symbol_iterator(BasicSymbolRef(Ret, this));
269}
270
244basic_symbol_iterator IRObjectFile::symbol_begin_impl() const {
245 Module::const_iterator I = M->begin();
246 DataRefImpl Ret;
247 Ret.p = skipEmpty(I, *M);
248 return basic_symbol_iterator(BasicSymbolRef(Ret, this));
249}
250
251basic_symbol_iterator IRObjectFile::symbol_end_impl() const {
252 DataRefImpl Ret;
253 uint64_t NumAsm = AsmSymbols.size();
254 NumAsm <<= 2;
255 Ret.p = 3 | NumAsm;
256 return basic_symbol_iterator(BasicSymbolRef(Ret, this));
257}
258
271ErrorOr<IRObjectFile *> llvm::object::IRObjectFile::createIRObjectFile(
272 std::unique_ptr<MemoryBuffer> Object, LLVMContext &Context) {
273 ErrorOr<Module *> MOrErr = getLazyBitcodeModule(Object.get(), Context);
259ErrorOr<MemoryBufferRef> IRObjectFile::findBitcodeInObject(const ObjectFile &Obj) {
260 for (const SectionRef &Sec : Obj.sections()) {
261 StringRef SecName;
262 if (std::error_code EC = Sec.getName(SecName))
263 return EC;
264 if (SecName == ".llvmbc") {
265 StringRef SecContents;
266 if (std::error_code EC = Sec.getContents(SecContents))
267 return EC;
268 return MemoryBufferRef(SecContents, Obj.getFileName());
269 }
270 }
271
272 return object_error::bitcode_section_not_found;
273}
274
275ErrorOr<MemoryBufferRef> IRObjectFile::findBitcodeInMemBuffer(MemoryBufferRef Object) {
276 sys::fs::file_magic Type = sys::fs::identify_magic(Object.getBuffer());
277 switch (Type) {
278 case sys::fs::file_magic::bitcode:
279 return Object;
280 case sys::fs::file_magic::elf_relocatable:
281 case sys::fs::file_magic::macho_object:
282 case sys::fs::file_magic::coff_object: {
283 ErrorOr<std::unique_ptr<ObjectFile>> ObjFile =
284 ObjectFile::createObjectFile(Object, Type);
285 if (!ObjFile)
286 return ObjFile.getError();
287 return findBitcodeInObject(*ObjFile->get());
288 }
289 default:
290 return object_error::invalid_file_type;
291 }
292}
293
294ErrorOr<std::unique_ptr<IRObjectFile>>
295llvm::object::IRObjectFile::create(MemoryBufferRef Object,
296 LLVMContext &Context) {
297 ErrorOr<MemoryBufferRef> BCOrErr = findBitcodeInMemBuffer(Object);
298 if (!BCOrErr)
299 return BCOrErr.getError();
300
301 std::unique_ptr<MemoryBuffer> Buff(
302 MemoryBuffer::getMemBuffer(BCOrErr.get(), false));
303
304 ErrorOr<Module *> MOrErr = getLazyBitcodeModule(std::move(Buff), Context);
274 if (std::error_code EC = MOrErr.getError())
275 return EC;
276
277 std::unique_ptr<Module> M(MOrErr.get());
305 if (std::error_code EC = MOrErr.getError())
306 return EC;
307
308 std::unique_ptr<Module> M(MOrErr.get());
278 return new IRObjectFile(std::move(Object), std::move(M));
309 return llvm::make_unique<IRObjectFile>(Object, std::move(M));
279}
310}