1 //===-- X86AsmPrinter.cpp - Convert X86 LLVM code to AT&T assembly --------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains a printer that converts from our internal representation
11 // of machine-dependent LLVM code to X86 machine code.
13 //===----------------------------------------------------------------------===//
15 #include "X86AsmPrinter.h"
16 #include "X86ATTInstPrinter.h"
17 #include "X86IntelInstPrinter.h"
18 #include "X86MCInstLower.h"
20 #include "X86COFFMachineModuleInfo.h"
21 #include "X86MachineFunctionInfo.h"
22 #include "X86TargetMachine.h"
23 #include "llvm/CallingConv.h"
24 #include "llvm/DerivedTypes.h"
25 #include "llvm/Module.h"
26 #include "llvm/Type.h"
27 #include "llvm/Assembly/Writer.h"
28 #include "llvm/MC/MCAsmInfo.h"
29 #include "llvm/MC/MCContext.h"
30 #include "llvm/MC/MCExpr.h"
31 #include "llvm/MC/MCSectionMachO.h"
32 #include "llvm/MC/MCStreamer.h"
33 #include "llvm/MC/MCSymbol.h"
34 #include "llvm/CodeGen/MachineJumpTableInfo.h"
35 #include "llvm/CodeGen/MachineModuleInfoImpls.h"
36 #include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
37 #include "llvm/Support/COFF.h"
38 #include "llvm/Support/ErrorHandling.h"
39 #include "llvm/Target/Mangler.h"
40 #include "llvm/Target/TargetOptions.h"
41 #include "llvm/Target/TargetRegistry.h"
42 #include "llvm/ADT/SmallString.h"
45 //===----------------------------------------------------------------------===//
46 // Primitive Helper Functions.
47 //===----------------------------------------------------------------------===//
49 void X86AsmPrinter::PrintPICBaseSymbol(raw_ostream &O) const {
50 const TargetLowering *TLI = TM.getTargetLowering();
51 O << *static_cast<const X86TargetLowering*>(TLI)->getPICBaseSymbol(MF,
55 /// runOnMachineFunction - Emit the function body.
57 bool X86AsmPrinter::runOnMachineFunction(MachineFunction &MF) {
58 SetupMachineFunction(MF);
60 if (Subtarget->isTargetCOFF()) {
61 bool Intrn = MF.getFunction()->hasInternalLinkage();
62 OutStreamer.BeginCOFFSymbolDef(CurrentFnSym);
63 OutStreamer.EmitCOFFSymbolStorageClass(Intrn ? COFF::IMAGE_SYM_CLASS_STATIC
64 : COFF::IMAGE_SYM_CLASS_EXTERNAL);
65 OutStreamer.EmitCOFFSymbolType(COFF::IMAGE_SYM_DTYPE_FUNCTION
66 << COFF::SCT_COMPLEX_TYPE_SHIFT);
67 OutStreamer.EndCOFFSymbolDef();
70 // Have common code print out the function header with linkage info etc.
73 // Emit the rest of the function body.
76 // We didn't modify anything.
80 /// printSymbolOperand - Print a raw symbol reference operand. This handles
81 /// jump tables, constant pools, global address and external symbols, all of
82 /// which print to a label with various suffixes for relocation types etc.
83 void X86AsmPrinter::printSymbolOperand(const MachineOperand &MO,
85 switch (MO.getType()) {
86 default: llvm_unreachable("unknown symbol type!");
87 case MachineOperand::MO_JumpTableIndex:
88 O << *GetJTISymbol(MO.getIndex());
90 case MachineOperand::MO_ConstantPoolIndex:
91 O << *GetCPISymbol(MO.getIndex());
92 printOffset(MO.getOffset(), O);
94 case MachineOperand::MO_GlobalAddress: {
95 const GlobalValue *GV = MO.getGlobal();
98 if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB)
99 GVSym = GetSymbolWithGlobalValueBase(GV, "$stub");
100 else if (MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY ||
101 MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY_PIC_BASE ||
102 MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE)
103 GVSym = GetSymbolWithGlobalValueBase(GV, "$non_lazy_ptr");
105 GVSym = Mang->getSymbol(GV);
107 // Handle dllimport linkage.
108 if (MO.getTargetFlags() == X86II::MO_DLLIMPORT)
109 GVSym = OutContext.GetOrCreateSymbol(Twine("__imp_") + GVSym->getName());
111 if (MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY ||
112 MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY_PIC_BASE) {
113 MCSymbol *Sym = GetSymbolWithGlobalValueBase(GV, "$non_lazy_ptr");
114 MachineModuleInfoImpl::StubValueTy &StubSym =
115 MMI->getObjFileInfo<MachineModuleInfoMachO>().getGVStubEntry(Sym);
116 if (StubSym.getPointer() == 0)
117 StubSym = MachineModuleInfoImpl::
118 StubValueTy(Mang->getSymbol(GV), !GV->hasInternalLinkage());
119 } else if (MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE){
120 MCSymbol *Sym = GetSymbolWithGlobalValueBase(GV, "$non_lazy_ptr");
121 MachineModuleInfoImpl::StubValueTy &StubSym =
122 MMI->getObjFileInfo<MachineModuleInfoMachO>().getHiddenGVStubEntry(Sym);
123 if (StubSym.getPointer() == 0)
124 StubSym = MachineModuleInfoImpl::
125 StubValueTy(Mang->getSymbol(GV), !GV->hasInternalLinkage());
126 } else if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB) {
127 MCSymbol *Sym = GetSymbolWithGlobalValueBase(GV, "$stub");
128 MachineModuleInfoImpl::StubValueTy &StubSym =
129 MMI->getObjFileInfo<MachineModuleInfoMachO>().getFnStubEntry(Sym);
130 if (StubSym.getPointer() == 0)
131 StubSym = MachineModuleInfoImpl::
132 StubValueTy(Mang->getSymbol(GV), !GV->hasInternalLinkage());
135 // If the name begins with a dollar-sign, enclose it in parens. We do this
136 // to avoid having it look like an integer immediate to the assembler.
137 if (GVSym->getName()[0] != '$')
140 O << '(' << *GVSym << ')';
141 printOffset(MO.getOffset(), O);
144 case MachineOperand::MO_ExternalSymbol: {
145 const MCSymbol *SymToPrint;
146 if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB) {
147 SmallString<128> TempNameStr;
148 TempNameStr += StringRef(MO.getSymbolName());
149 TempNameStr += StringRef("$stub");
151 MCSymbol *Sym = GetExternalSymbolSymbol(TempNameStr.str());
152 MachineModuleInfoImpl::StubValueTy &StubSym =
153 MMI->getObjFileInfo<MachineModuleInfoMachO>().getFnStubEntry(Sym);
154 if (StubSym.getPointer() == 0) {
155 TempNameStr.erase(TempNameStr.end()-5, TempNameStr.end());
156 StubSym = MachineModuleInfoImpl::
157 StubValueTy(OutContext.GetOrCreateSymbol(TempNameStr.str()),
160 SymToPrint = StubSym.getPointer();
162 SymToPrint = GetExternalSymbolSymbol(MO.getSymbolName());
165 // If the name begins with a dollar-sign, enclose it in parens. We do this
166 // to avoid having it look like an integer immediate to the assembler.
167 if (SymToPrint->getName()[0] != '$')
170 O << '(' << *SymToPrint << '(';
175 switch (MO.getTargetFlags()) {
177 llvm_unreachable("Unknown target flag on GV operand");
178 case X86II::MO_NO_FLAG: // No flag.
180 case X86II::MO_DARWIN_NONLAZY:
181 case X86II::MO_DLLIMPORT:
182 case X86II::MO_DARWIN_STUB:
183 // These affect the name of the symbol, not any suffix.
185 case X86II::MO_GOT_ABSOLUTE_ADDRESS:
187 PrintPICBaseSymbol(O);
190 case X86II::MO_PIC_BASE_OFFSET:
191 case X86II::MO_DARWIN_NONLAZY_PIC_BASE:
192 case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE:
194 PrintPICBaseSymbol(O);
196 case X86II::MO_TLSGD: O << "@TLSGD"; break;
197 case X86II::MO_GOTTPOFF: O << "@GOTTPOFF"; break;
198 case X86II::MO_INDNTPOFF: O << "@INDNTPOFF"; break;
199 case X86II::MO_TPOFF: O << "@TPOFF"; break;
200 case X86II::MO_NTPOFF: O << "@NTPOFF"; break;
201 case X86II::MO_GOTPCREL: O << "@GOTPCREL"; break;
202 case X86II::MO_GOT: O << "@GOT"; break;
203 case X86II::MO_GOTOFF: O << "@GOTOFF"; break;
204 case X86II::MO_PLT: O << "@PLT"; break;
205 case X86II::MO_TLVP: O << "@TLVP"; break;
206 case X86II::MO_TLVP_PIC_BASE:
208 PrintPICBaseSymbol(O);
213 /// print_pcrel_imm - This is used to print an immediate value that ends up
214 /// being encoded as a pc-relative value. These print slightly differently, for
215 /// example, a $ is not emitted.
216 void X86AsmPrinter::print_pcrel_imm(const MachineInstr *MI, unsigned OpNo,
218 const MachineOperand &MO = MI->getOperand(OpNo);
219 switch (MO.getType()) {
220 default: llvm_unreachable("Unknown pcrel immediate operand");
221 case MachineOperand::MO_Register:
222 // pc-relativeness was handled when computing the value in the reg.
223 printOperand(MI, OpNo, O);
225 case MachineOperand::MO_Immediate:
228 case MachineOperand::MO_MachineBasicBlock:
229 O << *MO.getMBB()->getSymbol();
231 case MachineOperand::MO_GlobalAddress:
232 case MachineOperand::MO_ExternalSymbol:
233 printSymbolOperand(MO, O);
239 void X86AsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
240 raw_ostream &O, const char *Modifier) {
241 const MachineOperand &MO = MI->getOperand(OpNo);
242 switch (MO.getType()) {
243 default: llvm_unreachable("unknown operand type!");
244 case MachineOperand::MO_Register: {
246 unsigned Reg = MO.getReg();
247 if (Modifier && strncmp(Modifier, "subreg", strlen("subreg")) == 0) {
248 EVT VT = (strcmp(Modifier+6,"64") == 0) ?
249 MVT::i64 : ((strcmp(Modifier+6, "32") == 0) ? MVT::i32 :
250 ((strcmp(Modifier+6,"16") == 0) ? MVT::i16 : MVT::i8));
251 Reg = getX86SubSuperRegister(Reg, VT);
253 O << X86ATTInstPrinter::getRegisterName(Reg);
257 case MachineOperand::MO_Immediate:
258 O << '$' << MO.getImm();
261 case MachineOperand::MO_JumpTableIndex:
262 case MachineOperand::MO_ConstantPoolIndex:
263 case MachineOperand::MO_GlobalAddress:
264 case MachineOperand::MO_ExternalSymbol: {
266 printSymbolOperand(MO, O);
272 void X86AsmPrinter::printSSECC(const MachineInstr *MI, unsigned Op,
274 unsigned char value = MI->getOperand(Op).getImm();
275 assert(value <= 7 && "Invalid ssecc argument!");
277 case 0: O << "eq"; break;
278 case 1: O << "lt"; break;
279 case 2: O << "le"; break;
280 case 3: O << "unord"; break;
281 case 4: O << "neq"; break;
282 case 5: O << "nlt"; break;
283 case 6: O << "nle"; break;
284 case 7: O << "ord"; break;
288 void X86AsmPrinter::printLeaMemReference(const MachineInstr *MI, unsigned Op,
289 raw_ostream &O, const char *Modifier) {
290 const MachineOperand &BaseReg = MI->getOperand(Op);
291 const MachineOperand &IndexReg = MI->getOperand(Op+2);
292 const MachineOperand &DispSpec = MI->getOperand(Op+3);
294 // If we really don't want to print out (rip), don't.
295 bool HasBaseReg = BaseReg.getReg() != 0;
296 if (HasBaseReg && Modifier && !strcmp(Modifier, "no-rip") &&
297 BaseReg.getReg() == X86::RIP)
300 // HasParenPart - True if we will print out the () part of the mem ref.
301 bool HasParenPart = IndexReg.getReg() || HasBaseReg;
303 if (DispSpec.isImm()) {
304 int DispVal = DispSpec.getImm();
305 if (DispVal || !HasParenPart)
308 assert(DispSpec.isGlobal() || DispSpec.isCPI() ||
309 DispSpec.isJTI() || DispSpec.isSymbol());
310 printSymbolOperand(MI->getOperand(Op+3), O);
314 assert(IndexReg.getReg() != X86::ESP &&
315 "X86 doesn't allow scaling by ESP");
319 printOperand(MI, Op, O, Modifier);
321 if (IndexReg.getReg()) {
323 printOperand(MI, Op+2, O, Modifier);
324 unsigned ScaleVal = MI->getOperand(Op+1).getImm();
326 O << ',' << ScaleVal;
332 void X86AsmPrinter::printMemReference(const MachineInstr *MI, unsigned Op,
333 raw_ostream &O, const char *Modifier) {
334 assert(isMem(MI, Op) && "Invalid memory reference!");
335 const MachineOperand &Segment = MI->getOperand(Op+4);
336 if (Segment.getReg()) {
337 printOperand(MI, Op+4, O, Modifier);
340 printLeaMemReference(MI, Op, O, Modifier);
343 void X86AsmPrinter::printPICLabel(const MachineInstr *MI, unsigned Op,
345 PrintPICBaseSymbol(O);
347 PrintPICBaseSymbol(O);
351 bool X86AsmPrinter::printAsmMRegister(const MachineOperand &MO, char Mode,
353 unsigned Reg = MO.getReg();
355 default: return true; // Unknown mode.
356 case 'b': // Print QImode register
357 Reg = getX86SubSuperRegister(Reg, MVT::i8);
359 case 'h': // Print QImode high register
360 Reg = getX86SubSuperRegister(Reg, MVT::i8, true);
362 case 'w': // Print HImode register
363 Reg = getX86SubSuperRegister(Reg, MVT::i16);
365 case 'k': // Print SImode register
366 Reg = getX86SubSuperRegister(Reg, MVT::i32);
368 case 'q': // Print DImode register
369 Reg = getX86SubSuperRegister(Reg, MVT::i64);
373 O << '%' << X86ATTInstPrinter::getRegisterName(Reg);
377 /// PrintAsmOperand - Print out an operand for an inline asm expression.
379 bool X86AsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
381 const char *ExtraCode, raw_ostream &O) {
382 // Does this asm operand have a single letter operand modifier?
383 if (ExtraCode && ExtraCode[0]) {
384 if (ExtraCode[1] != 0) return true; // Unknown modifier.
386 const MachineOperand &MO = MI->getOperand(OpNo);
388 switch (ExtraCode[0]) {
389 default: return true; // Unknown modifier.
390 case 'a': // This is an address. Currently only 'i' and 'r' are expected.
395 if (MO.isGlobal() || MO.isCPI() || MO.isJTI() || MO.isSymbol()) {
396 printSymbolOperand(MO, O);
397 if (Subtarget->isPICStyleRIPRel())
403 printOperand(MI, OpNo, O);
409 case 'c': // Don't print "$" before a global var name or constant.
412 else if (MO.isGlobal() || MO.isCPI() || MO.isJTI() || MO.isSymbol())
413 printSymbolOperand(MO, O);
415 printOperand(MI, OpNo, O);
418 case 'A': // Print '*' before a register (it must be a register)
421 printOperand(MI, OpNo, O);
426 case 'b': // Print QImode register
427 case 'h': // Print QImode high register
428 case 'w': // Print HImode register
429 case 'k': // Print SImode register
430 case 'q': // Print DImode register
432 return printAsmMRegister(MO, ExtraCode[0], O);
433 printOperand(MI, OpNo, O);
436 case 'P': // This is the operand of a call, treat specially.
437 print_pcrel_imm(MI, OpNo, O);
440 case 'n': // Negate the immediate or print a '-' before the operand.
441 // Note: this is a temporary solution. It should be handled target
442 // independently as part of the 'MC' work.
451 printOperand(MI, OpNo, O);
455 bool X86AsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI,
456 unsigned OpNo, unsigned AsmVariant,
457 const char *ExtraCode,
459 if (ExtraCode && ExtraCode[0]) {
460 if (ExtraCode[1] != 0) return true; // Unknown modifier.
462 switch (ExtraCode[0]) {
463 default: return true; // Unknown modifier.
464 case 'b': // Print QImode register
465 case 'h': // Print QImode high register
466 case 'w': // Print HImode register
467 case 'k': // Print SImode register
468 case 'q': // Print SImode register
469 // These only apply to registers, ignore on mem.
471 case 'P': // Don't print @PLT, but do print as memory.
472 printMemReference(MI, OpNo, O, "no-rip");
476 printMemReference(MI, OpNo, O);
480 void X86AsmPrinter::EmitStartOfAsmFile(Module &M) {
481 if (Subtarget->isTargetDarwin())
482 OutStreamer.SwitchSection(getObjFileLowering().getTextSection());
486 void X86AsmPrinter::EmitEndOfAsmFile(Module &M) {
487 if (Subtarget->isTargetDarwin()) {
488 // All darwin targets use mach-o.
489 MachineModuleInfoMachO &MMIMacho =
490 MMI->getObjFileInfo<MachineModuleInfoMachO>();
492 // Output stubs for dynamically-linked functions.
493 MachineModuleInfoMachO::SymbolListTy Stubs;
495 Stubs = MMIMacho.GetFnStubList();
496 if (!Stubs.empty()) {
497 const MCSection *TheSection =
498 OutContext.getMachOSection("__IMPORT", "__jump_table",
499 MCSectionMachO::S_SYMBOL_STUBS |
500 MCSectionMachO::S_ATTR_SELF_MODIFYING_CODE |
501 MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
502 5, SectionKind::getMetadata());
503 OutStreamer.SwitchSection(TheSection);
505 for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
507 OutStreamer.EmitLabel(Stubs[i].first);
508 // .indirect_symbol _foo
509 OutStreamer.EmitSymbolAttribute(Stubs[i].second.getPointer(),
510 MCSA_IndirectSymbol);
511 // hlt; hlt; hlt; hlt; hlt hlt = 0xf4 = -12.
512 const char HltInsts[] = { -12, -12, -12, -12, -12 };
513 OutStreamer.EmitBytes(StringRef(HltInsts, 5), 0/*addrspace*/);
517 OutStreamer.AddBlankLine();
520 // Output stubs for external and common global variables.
521 Stubs = MMIMacho.GetGVStubList();
522 if (!Stubs.empty()) {
523 const MCSection *TheSection =
524 OutContext.getMachOSection("__IMPORT", "__pointers",
525 MCSectionMachO::S_NON_LAZY_SYMBOL_POINTERS,
526 SectionKind::getMetadata());
527 OutStreamer.SwitchSection(TheSection);
529 for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
530 // L_foo$non_lazy_ptr:
531 OutStreamer.EmitLabel(Stubs[i].first);
532 // .indirect_symbol _foo
533 MachineModuleInfoImpl::StubValueTy &MCSym = Stubs[i].second;
534 OutStreamer.EmitSymbolAttribute(MCSym.getPointer(),
535 MCSA_IndirectSymbol);
538 // External to current translation unit.
539 OutStreamer.EmitIntValue(0, 4/*size*/, 0/*addrspace*/);
541 // Internal to current translation unit.
543 // When we place the LSDA into the TEXT section, the type info
544 // pointers need to be indirect and pc-rel. We accomplish this by
545 // using NLPs. However, sometimes the types are local to the file. So
546 // we need to fill in the value for the NLP in those cases.
547 OutStreamer.EmitValue(MCSymbolRefExpr::Create(MCSym.getPointer(),
549 4/*size*/, 0/*addrspace*/);
552 OutStreamer.AddBlankLine();
555 Stubs = MMIMacho.GetHiddenGVStubList();
556 if (!Stubs.empty()) {
557 OutStreamer.SwitchSection(getObjFileLowering().getDataSection());
560 for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
561 // L_foo$non_lazy_ptr:
562 OutStreamer.EmitLabel(Stubs[i].first);
564 OutStreamer.EmitValue(MCSymbolRefExpr::
565 Create(Stubs[i].second.getPointer(),
567 4/*size*/, 0/*addrspace*/);
570 OutStreamer.AddBlankLine();
573 // Funny Darwin hack: This flag tells the linker that no global symbols
574 // contain code that falls through to other global symbols (e.g. the obvious
575 // implementation of multiple entry points). If this doesn't occur, the
576 // linker can safely perform dead code stripping. Since LLVM never
577 // generates code that does this, it is always safe to set.
578 OutStreamer.EmitAssemblerFlag(MCAF_SubsectionsViaSymbols);
581 if (Subtarget->isTargetCOFF()) {
582 X86COFFMachineModuleInfo &COFFMMI =
583 MMI->getObjFileInfo<X86COFFMachineModuleInfo>();
585 // Emit type information for external functions
586 typedef X86COFFMachineModuleInfo::externals_iterator externals_iterator;
587 for (externals_iterator I = COFFMMI.externals_begin(),
588 E = COFFMMI.externals_end();
590 OutStreamer.BeginCOFFSymbolDef(CurrentFnSym);
591 OutStreamer.EmitCOFFSymbolStorageClass(COFF::IMAGE_SYM_CLASS_EXTERNAL);
592 OutStreamer.EmitCOFFSymbolType(COFF::IMAGE_SYM_DTYPE_FUNCTION
593 << COFF::SCT_COMPLEX_TYPE_SHIFT);
594 OutStreamer.EndCOFFSymbolDef();
597 // Necessary for dllexport support
598 std::vector<const MCSymbol*> DLLExportedFns, DLLExportedGlobals;
600 const TargetLoweringObjectFileCOFF &TLOFCOFF =
601 static_cast<const TargetLoweringObjectFileCOFF&>(getObjFileLowering());
603 for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I)
604 if (I->hasDLLExportLinkage())
605 DLLExportedFns.push_back(Mang->getSymbol(I));
607 for (Module::const_global_iterator I = M.global_begin(),
608 E = M.global_end(); I != E; ++I)
609 if (I->hasDLLExportLinkage())
610 DLLExportedGlobals.push_back(Mang->getSymbol(I));
612 // Output linker support code for dllexported globals on windows.
613 if (!DLLExportedGlobals.empty() || !DLLExportedFns.empty()) {
614 OutStreamer.SwitchSection(TLOFCOFF.getDrectveSection());
615 SmallString<128> name;
616 for (unsigned i = 0, e = DLLExportedGlobals.size(); i != e; ++i) {
617 if (Subtarget->isTargetWindows())
621 name += DLLExportedGlobals[i]->getName();
622 if (Subtarget->isTargetWindows())
626 OutStreamer.EmitBytes(name, 0);
629 for (unsigned i = 0, e = DLLExportedFns.size(); i != e; ++i) {
630 if (Subtarget->isTargetWindows())
634 name += DLLExportedFns[i]->getName();
635 OutStreamer.EmitBytes(name, 0);
640 if (Subtarget->isTargetELF()) {
641 const TargetLoweringObjectFileELF &TLOFELF =
642 static_cast<const TargetLoweringObjectFileELF &>(getObjFileLowering());
644 MachineModuleInfoELF &MMIELF = MMI->getObjFileInfo<MachineModuleInfoELF>();
646 // Output stubs for external and common global variables.
647 MachineModuleInfoELF::SymbolListTy Stubs = MMIELF.GetGVStubList();
648 if (!Stubs.empty()) {
649 OutStreamer.SwitchSection(TLOFELF.getDataRelSection());
650 const TargetData *TD = TM.getTargetData();
652 for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
653 OutStreamer.EmitLabel(Stubs[i].first);
654 OutStreamer.EmitSymbolValue(Stubs[i].second.getPointer(),
655 TD->getPointerSize(), 0);
663 //===----------------------------------------------------------------------===//
664 // Target Registry Stuff
665 //===----------------------------------------------------------------------===//
667 static MCInstPrinter *createX86MCInstPrinter(const Target &T,
668 unsigned SyntaxVariant,
669 const MCAsmInfo &MAI) {
670 if (SyntaxVariant == 0)
671 return new X86ATTInstPrinter(MAI);
672 if (SyntaxVariant == 1)
673 return new X86IntelInstPrinter(MAI);
677 // Force static initialization.
678 extern "C" void LLVMInitializeX86AsmPrinter() {
679 RegisterAsmPrinter<X86AsmPrinter> X(TheX86_32Target);
680 RegisterAsmPrinter<X86AsmPrinter> Y(TheX86_64Target);
682 TargetRegistry::RegisterMCInstPrinter(TheX86_32Target,createX86MCInstPrinter);
683 TargetRegistry::RegisterMCInstPrinter(TheX86_64Target,createX86MCInstPrinter);