#include "llvm/Assembly/Writer.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/DwarfWriter.h"
-#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
+#include "llvm/CodeGen/MachineModuleInfoImpls.h"
+#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
-#include "llvm/Target/TargetLoweringObjectFile.h"
+#include "llvm/Target/Mangler.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Target/TargetRegistry.h"
-#include "llvm/Support/Mangler.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FormattedStream.h"
-#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringSet.h"
#include "llvm/ADT/SmallString.h"
using namespace llvm;
-STATISTIC(EmittedInsts, "Number of machine instrs printed");
-
namespace {
class PPCAsmPrinter : public AsmPrinter {
protected:
- struct FnStubInfo {
- MCSymbol *Stub, *LazyPtr, *AnonSymbol;
-
- FnStubInfo() {
- Stub = LazyPtr = AnonSymbol = 0;
- }
-
- void Init(const GlobalValue *GV, Mangler *Mang, MCContext &Ctx) {
- // Already initialized.
- if (Stub != 0) return;
-
- // Get the names.
- SmallString<128> TmpStr;
- Mang->getNameWithPrefix(TmpStr, GV, true);
- MakeSymbols(TmpStr, Ctx);
- }
-
- void Init(StringRef GVName, Mangler *Mang, MCContext &Ctx) {
- assert(!GVName.empty() && "external symbol name shouldn't be empty");
- if (Stub != 0) return; // Already initialized.
- // Get the names for the external symbol name.
- SmallString<128> TmpStr;
- Mang->getNameWithPrefix(TmpStr, GVName, Mangler::Private);
- MakeSymbols(TmpStr, Ctx);
- }
-
- void MakeSymbols(SmallString<128> &TmpStr, MCContext &Ctx) {
- TmpStr += "$stub";
- Stub = Ctx.GetOrCreateSymbol(TmpStr.str());
- TmpStr.erase(TmpStr.end()-5, TmpStr.end()); // Remove $stub
-
- TmpStr += "$lazy_ptr";
- LazyPtr = Ctx.GetOrCreateSymbol(TmpStr.str());
- TmpStr.erase(TmpStr.end()-9, TmpStr.end()); // Remove $lazy_ptr
-
- TmpStr += "$stub$tmp";
- AnonSymbol = Ctx.GetOrCreateSymbol(TmpStr.str());
- }
- };
-
- StringMap<FnStubInfo> FnStubs;
- StringMap<std::string> GVStubs, HiddenGVStubs, TOC;
+ DenseMap<const MCSymbol*, const MCSymbol*> TOC;
const PPCSubtarget &Subtarget;
uint64_t LabelID;
public:
explicit PPCAsmPrinter(formatted_raw_ostream &O, TargetMachine &TM,
- const MCAsmInfo *T, bool V)
- : AsmPrinter(O, TM, T, V),
+ MCContext &Ctx, MCStreamer &Streamer,
+ const MCAsmInfo *T)
+ : AsmPrinter(O, TM, Ctx, Streamer, T),
Subtarget(TM.getSubtarget<PPCSubtarget>()), LabelID(0) {}
virtual const char *getPassName() const {
static const char *getRegisterName(unsigned RegNo);
- void printMachineInstruction(const MachineInstr *MI);
+ virtual void EmitInstruction(const MachineInstr *MI);
void printOp(const MachineOperand &MO);
/// stripRegisterPrefix - This method strips the character prefix from a
GlobalValue *GV = MO.getGlobal();
if (GV->isDeclaration() || GV->isWeakForLinker()) {
// Dynamically-resolved functions need a stub for the function.
- FnStubInfo &FnInfo = FnStubs[Mang->getMangledName(GV)];
- FnInfo.Init(GV, Mang, OutContext);
- FnInfo.Stub->print(O, MAI);
+ MCSymbol *Sym = GetSymbolWithGlobalValueBase(GV, "$stub");
+ MachineModuleInfoImpl::StubValueTy &StubSym =
+ MMI->getObjFileInfo<MachineModuleInfoMachO>().getFnStubEntry(Sym);
+ if (StubSym.getPointer() == 0)
+ StubSym = MachineModuleInfoImpl::
+ StubValueTy(GetGlobalValueSymbol(GV),!GV->hasInternalLinkage());
+ O << *Sym;
return;
}
}
if (MO.getType() == MachineOperand::MO_ExternalSymbol) {
- SmallString<128> MangledName;
- Mang->getNameWithPrefix(MangledName, MO.getSymbolName());
- FnStubInfo &FnInfo = FnStubs[MangledName.str()];
- FnInfo.Init(MO.getSymbolName(), Mang, OutContext);
- FnInfo.Stub->print(O, MAI);
+ SmallString<128> TempNameStr;
+ TempNameStr += StringRef(MO.getSymbolName());
+ TempNameStr += StringRef("$stub");
+
+ MCSymbol *Sym = GetExternalSymbolSymbol(TempNameStr.str());
+ MachineModuleInfoImpl::StubValueTy &StubSym =
+ MMI->getObjFileInfo<MachineModuleInfoMachO>().getFnStubEntry(Sym);
+ if (StubSym.getPointer() == 0)
+ StubSym = MachineModuleInfoImpl::
+ StubValueTy(GetExternalSymbolSymbol(MO.getSymbolName()), true);
+ O << *Sym;
return;
}
}
assert(MO.getType() == MachineOperand::MO_GlobalAddress);
- GlobalValue *GV = MO.getGlobal();
-
- std::string Name = Mang->getMangledName(GV);
+ const MCSymbol *Sym = GetGlobalValueSymbol(MO.getGlobal());
// Map symbol -> label of TOC entry.
- if (TOC.count(Name) == 0) {
- std::string Label;
- Label += MAI->getPrivateGlobalPrefix();
- Label += "C";
- Label += utostr(LabelID++);
-
- TOC[Name] = Label;
- }
+ const MCSymbol *&TOCEntry = TOC[Sym];
+ if (TOCEntry == 0)
+ TOCEntry = OutContext.
+ GetOrCreateTemporarySymbol(StringRef(MAI->getPrivateGlobalPrefix()) +
+ "C" + Twine(LabelID++));
- O << TOC[Name] << "@toc";
+ O << *TOCEntry << "@toc";
}
void printPredicateOperand(const MachineInstr *MI, unsigned OpNo,
const char *Modifier);
-
- virtual bool runOnMachineFunction(MachineFunction &F) = 0;
};
/// PPCLinuxAsmPrinter - PowerPC assembly printer, customized for Linux
class PPCLinuxAsmPrinter : public PPCAsmPrinter {
public:
explicit PPCLinuxAsmPrinter(formatted_raw_ostream &O, TargetMachine &TM,
- const MCAsmInfo *T, bool V)
- : PPCAsmPrinter(O, TM, T, V){}
+ MCContext &Ctx, MCStreamer &Streamer,
+ const MCAsmInfo *T)
+ : PPCAsmPrinter(O, TM, Ctx, Streamer, T) {}
virtual const char *getPassName() const {
return "Linux PPC Assembly Printer";
}
- bool runOnMachineFunction(MachineFunction &F);
bool doFinalization(Module &M);
+ virtual void EmitFunctionEntryLabel();
+
void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
AU.addRequired<MachineModuleInfo>();
AU.addRequired<DwarfWriter>();
PPCAsmPrinter::getAnalysisUsage(AU);
}
-
- void PrintGlobalVariable(const GlobalVariable *GVar);
};
/// PPCDarwinAsmPrinter - PowerPC assembly printer, customized for Darwin/Mac
formatted_raw_ostream &OS;
public:
explicit PPCDarwinAsmPrinter(formatted_raw_ostream &O, TargetMachine &TM,
- const MCAsmInfo *T, bool V)
- : PPCAsmPrinter(O, TM, T, V), OS(O) {}
+ MCContext &Ctx, MCStreamer &Streamer,
+ const MCAsmInfo *T)
+ : PPCAsmPrinter(O, TM, Ctx, Streamer, T), OS(O) {}
virtual const char *getPassName() const {
return "Darwin PPC Assembly Printer";
}
- bool runOnMachineFunction(MachineFunction &F);
bool doFinalization(Module &M);
void EmitStartOfAsmFile(Module &M);
+ void EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs);
+
void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
AU.addRequired<MachineModuleInfo>();
AU.addRequired<DwarfWriter>();
PPCAsmPrinter::getAnalysisUsage(AU);
}
-
- void PrintGlobalVariable(const GlobalVariable *GVar);
};
} // end of anonymous namespace
llvm_unreachable("printOp() does not handle immediate values");
case MachineOperand::MO_MachineBasicBlock:
- GetMBBSymbol(MO.getMBB()->getNumber())->print(O, MAI);
+ O << *MO.getMBB()->getSymbol(OutContext);
return;
case MachineOperand::MO_JumpTableIndex:
O << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
<< '_' << MO.getIndex();
return;
case MachineOperand::MO_BlockAddress:
- GetBlockAddressSymbol(MO.getBlockAddress())->print(O, MAI);
+ O << *GetBlockAddressSymbol(MO.getBlockAddress());
return;
case MachineOperand::MO_ExternalSymbol: {
// Computing the address of an external symbol, not calling it.
- std::string Name(MAI->getGlobalPrefix());
- Name += MO.getSymbolName();
-
- if (TM.getRelocationModel() != Reloc::Static) {
- GVStubs[Name] = Name+"$non_lazy_ptr";
- Name += "$non_lazy_ptr";
+ if (TM.getRelocationModel() == Reloc::Static) {
+ O << *GetExternalSymbolSymbol(MO.getSymbolName());
+ return;
}
- O << Name;
+
+ MCSymbol *NLPSym =
+ OutContext.GetOrCreateSymbol(StringRef(MAI->getGlobalPrefix())+
+ MO.getSymbolName()+"$non_lazy_ptr");
+ MachineModuleInfoImpl::StubValueTy &StubSym =
+ MMI->getObjFileInfo<MachineModuleInfoMachO>().getGVStubEntry(NLPSym);
+ if (StubSym.getPointer() == 0)
+ StubSym = MachineModuleInfoImpl::
+ StubValueTy(GetExternalSymbolSymbol(MO.getSymbolName()), true);
+
+ O << *NLPSym;
return;
}
case MachineOperand::MO_GlobalAddress: {
// Computing the address of a global symbol, not calling it.
GlobalValue *GV = MO.getGlobal();
- std::string Name;
+ MCSymbol *SymToPrint;
// External or weakly linked global variables need non-lazily-resolved stubs
if (TM.getRelocationModel() != Reloc::Static &&
(GV->isDeclaration() || GV->isWeakForLinker())) {
if (!GV->hasHiddenVisibility()) {
- Name = Mang->getMangledName(GV, "$non_lazy_ptr", true);
- GVStubs[Mang->getMangledName(GV)] = Name;
+ SymToPrint = GetSymbolWithGlobalValueBase(GV, "$non_lazy_ptr");
+ MachineModuleInfoImpl::StubValueTy &StubSym =
+ MMI->getObjFileInfo<MachineModuleInfoMachO>()
+ .getGVStubEntry(SymToPrint);
+ if (StubSym.getPointer() == 0)
+ StubSym = MachineModuleInfoImpl::
+ StubValueTy(GetGlobalValueSymbol(GV), !GV->hasInternalLinkage());
} else if (GV->isDeclaration() || GV->hasCommonLinkage() ||
GV->hasAvailableExternallyLinkage()) {
- Name = Mang->getMangledName(GV, "$non_lazy_ptr", true);
- HiddenGVStubs[Mang->getMangledName(GV)] = Name;
+ SymToPrint = GetSymbolWithGlobalValueBase(GV, "$non_lazy_ptr");
+
+ MachineModuleInfoImpl::StubValueTy &StubSym =
+ MMI->getObjFileInfo<MachineModuleInfoMachO>().
+ getHiddenGVStubEntry(SymToPrint);
+ if (StubSym.getPointer() == 0)
+ StubSym = MachineModuleInfoImpl::
+ StubValueTy(GetGlobalValueSymbol(GV),
+ !GV->hasInternalLinkage());
} else {
- Name = Mang->getMangledName(GV);
+ SymToPrint = GetGlobalValueSymbol(GV);
}
} else {
- Name = Mang->getMangledName(GV);
+ SymToPrint = GetGlobalValueSymbol(GV);
}
- O << Name;
+
+ O << *SymToPrint;
printOffset(MO.getOffset());
return;
}
-/// printMachineInstruction -- Print out a single PowerPC MI in Darwin syntax to
+/// EmitInstruction -- Print out a single PowerPC MI in Darwin syntax to
/// the current output stream.
///
-void PPCAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
- ++EmittedInsts;
-
- processDebugLoc(MI, true);
-
+void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
// Check for slwi/srwi mnemonics.
- bool useSubstituteMnemonic = false;
if (MI->getOpcode() == PPC::RLWINM) {
unsigned char SH = MI->getOperand(2).getImm();
unsigned char MB = MI->getOperand(3).getImm();
unsigned char ME = MI->getOperand(4).getImm();
+ bool useSubstituteMnemonic = false;
if (SH <= 31 && MB == 0 && ME == (31-SH)) {
O << "\tslwi "; useSubstituteMnemonic = true;
}
O << ", ";
printOperand(MI, 1);
O << ", " << (unsigned int)SH;
+ OutStreamer.AddBlankLine();
+ return;
}
- } else if (MI->getOpcode() == PPC::OR || MI->getOpcode() == PPC::OR8) {
- if (MI->getOperand(1).getReg() == MI->getOperand(2).getReg()) {
- useSubstituteMnemonic = true;
- O << "\tmr ";
- printOperand(MI, 0);
- O << ", ";
- printOperand(MI, 1);
- }
- } else if (MI->getOpcode() == PPC::RLDICR) {
+ }
+
+ if ((MI->getOpcode() == PPC::OR || MI->getOpcode() == PPC::OR8) &&
+ MI->getOperand(1).getReg() == MI->getOperand(2).getReg()) {
+ O << "\tmr ";
+ printOperand(MI, 0);
+ O << ", ";
+ printOperand(MI, 1);
+ OutStreamer.AddBlankLine();
+ return;
+ }
+
+ if (MI->getOpcode() == PPC::RLDICR) {
unsigned char SH = MI->getOperand(2).getImm();
unsigned char ME = MI->getOperand(3).getImm();
// rldicr RA, RS, SH, 63-SH == sldi RA, RS, SH
if (63-SH == ME) {
- useSubstituteMnemonic = true;
O << "\tsldi ";
printOperand(MI, 0);
O << ", ";
printOperand(MI, 1);
O << ", " << (unsigned int)SH;
+ OutStreamer.AddBlankLine();
+ return;
}
}
- if (!useSubstituteMnemonic)
- printInstruction(MI);
-
- if (VerboseAsm)
- EmitComments(*MI);
- O << '\n';
-
- processDebugLoc(MI, false);
+ printInstruction(MI);
+ OutStreamer.AddBlankLine();
}
-/// runOnMachineFunction - This uses the printMachineInstruction()
-/// method to print assembly for each instruction.
-///
-bool PPCLinuxAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
- this->MF = &MF;
-
- SetupMachineFunction(MF);
- O << "\n\n";
-
- // Print out constants referenced by the function
- EmitConstantPool(MF.getConstantPool());
-
- // Print out labels for the function.
- const Function *F = MF.getFunction();
- OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(F, Mang, TM));
-
- switch (F->getLinkage()) {
- default: llvm_unreachable("Unknown linkage type!");
- case Function::PrivateLinkage:
- case Function::InternalLinkage: // Symbols default to internal.
- break;
- case Function::ExternalLinkage:
- O << "\t.global\t";
- CurrentFnSym->print(O, MAI);
- O << '\n' << "\t.type\t";
- CurrentFnSym->print(O, MAI);
- O << ", @function\n";
- break;
- case Function::LinkerPrivateLinkage:
- case Function::WeakAnyLinkage:
- case Function::WeakODRLinkage:
- case Function::LinkOnceAnyLinkage:
- case Function::LinkOnceODRLinkage:
- O << "\t.global\t";
- CurrentFnSym->print(O, MAI);
- O << '\n';
- O << "\t.weak\t";
- CurrentFnSym->print(O, MAI);
- O << '\n';
- break;
- }
-
- printVisibility(CurrentFnSym, F->getVisibility());
-
- EmitAlignment(MF.getAlignment(), F);
-
- if (Subtarget.isPPC64()) {
- // Emit an official procedure descriptor.
- // FIXME 64-bit SVR4: Use MCSection here!
- O << "\t.section\t\".opd\",\"aw\"\n";
- O << "\t.align 3\n";
- CurrentFnSym->print(O, MAI);
- O << ":\n";
- O << "\t.quad .L.";
- CurrentFnSym->print(O, MAI);
- O << ",.TOC.@tocbase\n";
- O << "\t.previous\n";
- O << ".L.";
- CurrentFnSym->print(O, MAI);
- O << ":\n";
- } else {
- CurrentFnSym->print(O, MAI);
- O << ":\n";
- }
-
- // Emit pre-function debug information.
- DW->BeginFunction(&MF);
-
- // Print out code for the function.
- for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
- I != E; ++I) {
- // Print a label for the basic block.
- if (I != MF.begin()) {
- EmitBasicBlockStart(I);
- }
- for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
- II != E; ++II) {
- // Print the assembly for the instruction.
- printMachineInstruction(II);
- }
- }
-
- O << "\t.size\t";
- CurrentFnSym->print(O, MAI);
- O << ",.-";
- CurrentFnSym->print(O, MAI);
- O << '\n';
-
- OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(F, Mang, TM));
-
- // Emit post-function debug information.
- DW->EndFunction(&MF);
-
- // Print out jump tables referenced by the function.
- EmitJumpTableInfo(MF.getJumpTableInfo(), MF);
-
- // We didn't modify anything.
- return false;
+void PPCLinuxAsmPrinter::EmitFunctionEntryLabel() {
+ if (!Subtarget.isPPC64()) // linux/ppc32 - Normal entry label.
+ return AsmPrinter::EmitFunctionEntryLabel();
+
+ // Emit an official procedure descriptor.
+ // FIXME 64-bit SVR4: Use MCSection here!
+ O << "\t.section\t\".opd\",\"aw\"\n";
+ O << "\t.align 3\n";
+ OutStreamer.EmitLabel(CurrentFnSym);
+ O << "\t.quad .L." << *CurrentFnSym << ",.TOC.@tocbase\n";
+ O << "\t.previous\n";
+ O << ".L." << *CurrentFnSym << ":\n";
}
-void PPCLinuxAsmPrinter::PrintGlobalVariable(const GlobalVariable *GVar) {
- const TargetData *TD = TM.getTargetData();
-
- if (!GVar->hasInitializer())
- return; // External global require no code
-
- // Check to see if this is a special global used by LLVM, if so, emit it.
- if (EmitSpecialLLVMGlobal(GVar))
- return;
-
- MCSymbol *GVarSym = GetGlobalValueSymbol(GVar);
-
- printVisibility(GVarSym, GVar->getVisibility());
-
- Constant *C = GVar->getInitializer();
- const Type *Type = C->getType();
- unsigned Size = TD->getTypeAllocSize(Type);
- unsigned Align = TD->getPreferredAlignmentLog(GVar);
-
- OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(GVar, Mang,
- TM));
-
- if (C->isNullValue() && /* FIXME: Verify correct */
- !GVar->hasSection() &&
- (GVar->hasLocalLinkage() || GVar->hasExternalLinkage() ||
- GVar->isWeakForLinker())) {
- if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
-
- if (GVar->hasExternalLinkage()) {
- O << "\t.global ";
- GVarSym->print(O, MAI);
- O << '\n';
- O << "\t.type ";
- GVarSym->print(O, MAI);
- O << ", @object\n";
- GVarSym->print(O, MAI);
- O << ":\n";
- O << "\t.zero " << Size << '\n';
- } else if (GVar->hasLocalLinkage()) {
- O << MAI->getLCOMMDirective();
- GVarSym->print(O, MAI);
- O << ',' << Size;
- } else {
- O << ".comm ";
- GVarSym->print(O, MAI);
- O << ',' << Size;
- }
- if (VerboseAsm) {
- O << "\t\t" << MAI->getCommentString() << " '";
- WriteAsOperand(O, GVar, /*PrintType=*/false, GVar->getParent());
- O << "'";
- }
- O << '\n';
- return;
- }
-
- switch (GVar->getLinkage()) {
- case GlobalValue::LinkOnceAnyLinkage:
- case GlobalValue::LinkOnceODRLinkage:
- case GlobalValue::WeakAnyLinkage:
- case GlobalValue::WeakODRLinkage:
- case GlobalValue::CommonLinkage:
- case GlobalValue::LinkerPrivateLinkage:
- O << "\t.global ";
- GVarSym->print(O, MAI);
- O << "\n\t.type ";
- GVarSym->print(O, MAI);
- O << ", @object\n\t.weak ";
- GVarSym->print(O, MAI);
- O << '\n';
- break;
- case GlobalValue::AppendingLinkage:
- // FIXME: appending linkage variables should go into a section of
- // their name or something. For now, just emit them as external.
- case GlobalValue::ExternalLinkage:
- // If external or appending, declare as a global symbol
- O << "\t.global ";
- GVarSym->print(O, MAI);
- O << "\n\t.type ";
- GVarSym->print(O, MAI);
- O << ", @object\n";
- // FALL THROUGH
- case GlobalValue::InternalLinkage:
- case GlobalValue::PrivateLinkage:
- break;
- default:
- llvm_unreachable("Unknown linkage type!");
- }
-
- EmitAlignment(Align, GVar);
- GVarSym->print(O, MAI);
- O << ":";
- if (VerboseAsm) {
- O << "\t\t\t\t" << MAI->getCommentString() << " '";
- WriteAsOperand(O, GVar, /*PrintType=*/false, GVar->getParent());
- O << "'";
- }
- O << '\n';
-
- EmitGlobalConstant(C);
- O << '\n';
-}
bool PPCLinuxAsmPrinter::doFinalization(Module &M) {
const TargetData *TD = TM.getTargetData();
// FIXME 64-bit SVR4: Use MCSection here?
O << "\t.section\t\".toc\",\"aw\"\n";
- for (StringMap<std::string>::iterator I = TOC.begin(), E = TOC.end();
- I != E; ++I) {
- O << I->second << ":\n";
- O << "\t.tc " << I->getKeyData() << "[TC]," << I->getKeyData() << '\n';
+ // FIXME: This is nondeterminstic!
+ for (DenseMap<const MCSymbol*, const MCSymbol*>::iterator I = TOC.begin(),
+ E = TOC.end(); I != E; ++I) {
+ O << *I->second << ":\n";
+ O << "\t.tc " << *I->first << "[TC]," << *I->first << '\n';
}
}
return AsmPrinter::doFinalization(M);
}
-/// runOnMachineFunction - This uses the printMachineInstruction()
-/// method to print assembly for each instruction.
-///
-bool PPCDarwinAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
- this->MF = &MF;
-
- SetupMachineFunction(MF);
- O << "\n\n";
-
- // Print out constants referenced by the function
- EmitConstantPool(MF.getConstantPool());
-
- // Print out labels for the function.
- const Function *F = MF.getFunction();
- OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(F, Mang, TM));
-
- switch (F->getLinkage()) {
- default: llvm_unreachable("Unknown linkage type!");
- case Function::PrivateLinkage:
- case Function::InternalLinkage: // Symbols default to internal.
- break;
- case Function::ExternalLinkage:
- O << "\t.globl\t";
- CurrentFnSym->print(O, MAI);
- O << '\n';
- break;
- case Function::WeakAnyLinkage:
- case Function::WeakODRLinkage:
- case Function::LinkOnceAnyLinkage:
- case Function::LinkOnceODRLinkage:
- case Function::LinkerPrivateLinkage:
- O << "\t.globl\t";
- CurrentFnSym->print(O, MAI);
- O << '\n';
- O << "\t.weak_definition\t";
- CurrentFnSym->print(O, MAI);
- O << '\n';
- break;
- }
-
- printVisibility(CurrentFnSym, F->getVisibility());
-
- EmitAlignment(MF.getAlignment(), F);
- CurrentFnSym->print(O, MAI);
- O << ":\n";
-
- // Emit pre-function debug information.
- DW->BeginFunction(&MF);
-
- // If the function is empty, then we need to emit *something*. Otherwise, the
- // function's label might be associated with something that it wasn't meant to
- // be associated with. We emit a noop in this situation.
- MachineFunction::iterator I = MF.begin();
-
- if (++I == MF.end() && MF.front().empty())
- O << "\tnop\n";
-
- // Print out code for the function.
- for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
- I != E; ++I) {
- // Print a label for the basic block.
- if (I != MF.begin()) {
- EmitBasicBlockStart(I);
- }
- for (MachineBasicBlock::const_iterator II = I->begin(), IE = I->end();
- II != IE; ++II) {
- // Print the assembly for the instruction.
- printMachineInstruction(II);
- }
- }
-
- // Emit post-function debug information.
- DW->EndFunction(&MF);
-
- // Print out jump tables referenced by the function.
- EmitJumpTableInfo(MF.getJumpTableInfo(), MF);
-
- // We didn't modify anything.
- return false;
-}
-
-
void PPCDarwinAsmPrinter::EmitStartOfAsmFile(Module &M) {
static const char *const CPUDirectives[] = {
"",
OutStreamer.SwitchSection(getObjFileLowering().getTextSection());
}
-void PPCDarwinAsmPrinter::PrintGlobalVariable(const GlobalVariable *GVar) {
- const TargetData *TD = TM.getTargetData();
-
- if (!GVar->hasInitializer())
- return; // External global require no code
-
- // Check to see if this is a special global used by LLVM, if so, emit it.
- if (EmitSpecialLLVMGlobal(GVar)) {
- if (TM.getRelocationModel() == Reloc::Static) {
- if (GVar->getName() == "llvm.global_ctors")
- O << ".reference .constructors_used\n";
- else if (GVar->getName() == "llvm.global_dtors")
- O << ".reference .destructors_used\n";
- }
- return;
- }
-
- MCSymbol *GVarSym = GetGlobalValueSymbol(GVar);
- printVisibility(GVarSym, GVar->getVisibility());
-
- Constant *C = GVar->getInitializer();
- const Type *Type = C->getType();
- unsigned Size = TD->getTypeAllocSize(Type);
- unsigned Align = TD->getPreferredAlignmentLog(GVar);
-
- const MCSection *TheSection =
- getObjFileLowering().SectionForGlobal(GVar, Mang, TM);
- OutStreamer.SwitchSection(TheSection);
-
- /// FIXME: Drive this off the section!
- if (C->isNullValue() && /* FIXME: Verify correct */
- !GVar->hasSection() &&
- (GVar->hasLocalLinkage() || GVar->hasExternalLinkage() ||
- GVar->isWeakForLinker()) &&
- // Don't put things that should go in the cstring section into "comm".
- !TheSection->getKind().isMergeableCString()) {
- if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
-
- if (GVar->hasExternalLinkage()) {
- O << "\t.globl ";
- GVarSym->print(O, MAI);
- O << '\n';
- O << "\t.zerofill __DATA, __common, ";
- GVarSym->print(O, MAI);
- O << ", " << Size << ", " << Align;
- } else if (GVar->hasLocalLinkage()) {
- O << MAI->getLCOMMDirective();
- GVarSym->print(O, MAI);
- O << ',' << Size << ',' << Align;
- } else if (!GVar->hasCommonLinkage()) {
- O << "\t.globl ";
- GVarSym->print(O, MAI);
- O << '\n' << MAI->getWeakDefDirective();
- GVarSym->print(O, MAI);
- O << '\n';
- EmitAlignment(Align, GVar);
- GVarSym->print(O, MAI);
- O << ":";
- if (VerboseAsm) {
- O << "\t\t\t\t" << MAI->getCommentString() << " ";
- WriteAsOperand(O, GVar, /*PrintType=*/false, GVar->getParent());
- }
- O << '\n';
- EmitGlobalConstant(C);
- return;
- } else {
- O << ".comm ";
- GVarSym->print(O, MAI);
- O << ',' << Size;
- // Darwin 9 and above support aligned common data.
- if (Subtarget.isDarwin9())
- O << ',' << Align;
- }
- if (VerboseAsm) {
- O << "\t\t" << MAI->getCommentString() << " '";
- WriteAsOperand(O, GVar, /*PrintType=*/false, GVar->getParent());
- O << "'";
- }
- O << '\n';
- return;
- }
-
- switch (GVar->getLinkage()) {
- case GlobalValue::LinkOnceAnyLinkage:
- case GlobalValue::LinkOnceODRLinkage:
- case GlobalValue::WeakAnyLinkage:
- case GlobalValue::WeakODRLinkage:
- case GlobalValue::CommonLinkage:
- case GlobalValue::LinkerPrivateLinkage:
- O << "\t.globl ";
- GVarSym->print(O, MAI);
- O << "\n\t.weak_definition ";
- GVarSym->print(O, MAI);
- O << '\n';
- break;
- case GlobalValue::AppendingLinkage:
- // FIXME: appending linkage variables should go into a section of
- // their name or something. For now, just emit them as external.
- case GlobalValue::ExternalLinkage:
- // If external or appending, declare as a global symbol
- O << "\t.globl ";
- GVarSym->print(O, MAI);
- O << '\n';
- // FALL THROUGH
- case GlobalValue::InternalLinkage:
- case GlobalValue::PrivateLinkage:
- break;
- default:
- llvm_unreachable("Unknown linkage type!");
- }
-
- EmitAlignment(Align, GVar);
- GVarSym->print(O, MAI);
- O << ":";
- if (VerboseAsm) {
- O << "\t\t\t\t" << MAI->getCommentString() << " '";
- WriteAsOperand(O, GVar, /*PrintType=*/false, GVar->getParent());
- O << "'";
- }
- O << '\n';
-
- EmitGlobalConstant(C);
- O << '\n';
+static const MCSymbol *GetLazyPtr(const MCSymbol *Sym, MCContext &Ctx) {
+ // Remove $stub suffix, add $lazy_ptr.
+ SmallString<128> TmpStr(Sym->getName().begin(), Sym->getName().end()-5);
+ TmpStr += "$lazy_ptr";
+ return Ctx.GetOrCreateTemporarySymbol(TmpStr.str());
}
-bool PPCDarwinAsmPrinter::doFinalization(Module &M) {
- const TargetData *TD = TM.getTargetData();
-
- bool isPPC64 = TD->getPointerSizeInBits() == 64;
+static const MCSymbol *GetAnonSym(const MCSymbol *Sym, MCContext &Ctx) {
+ // Add $tmp suffix to $stub, yielding $stub$tmp.
+ SmallString<128> TmpStr(Sym->getName().begin(), Sym->getName().end());
+ TmpStr += "$tmp";
+ return Ctx.GetOrCreateTemporarySymbol(TmpStr.str());
+}
- // Darwin/PPC always uses mach-o.
+void PPCDarwinAsmPrinter::
+EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs) {
+ bool isPPC64 = TM.getTargetData()->getPointerSizeInBits() == 64;
+
TargetLoweringObjectFileMachO &TLOFMacho =
static_cast<TargetLoweringObjectFileMachO &>(getObjFileLowering());
-
- const MCSection *LSPSection = 0;
- if (!FnStubs.empty()) // .lazy_symbol_pointer
- LSPSection = TLOFMacho.getLazySymbolPointerSection();
-
+ // .lazy_symbol_pointer
+ const MCSection *LSPSection = TLOFMacho.getLazySymbolPointerSection();
// Output stubs for dynamically-linked functions
- if (TM.getRelocationModel() == Reloc::PIC_ && !FnStubs.empty()) {
+ if (TM.getRelocationModel() == Reloc::PIC_) {
const MCSection *StubSection =
- TLOFMacho.getMachOSection("__TEXT", "__picsymbolstub1",
- MCSectionMachO::S_SYMBOL_STUBS |
- MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
- 32, SectionKind::getText());
- for (StringMap<FnStubInfo>::iterator I = FnStubs.begin(), E = FnStubs.end();
- I != E; ++I) {
+ TLOFMacho.getMachOSection("__TEXT", "__picsymbolstub1",
+ MCSectionMachO::S_SYMBOL_STUBS |
+ MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
+ 32, SectionKind::getText());
+ for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
OutStreamer.SwitchSection(StubSection);
EmitAlignment(4);
- const FnStubInfo &Info = I->second;
- Info.Stub->print(O, MAI);
- O << ":\n";
- O << "\t.indirect_symbol " << I->getKeyData() << '\n';
+
+ const MCSymbol *Stub = Stubs[i].first;
+ const MCSymbol *RawSym = Stubs[i].second.getPointer();
+ const MCSymbol *LazyPtr = GetLazyPtr(Stub, OutContext);
+ const MCSymbol *AnonSymbol = GetAnonSym(Stub, OutContext);
+
+ O << *Stub << ":\n";
+ O << "\t.indirect_symbol " << *RawSym << '\n';
O << "\tmflr r0\n";
- O << "\tbcl 20,31,";
- Info.AnonSymbol->print(O, MAI);
- O << '\n';
- Info.AnonSymbol->print(O, MAI);
- O << ":\n";
+ O << "\tbcl 20,31," << *AnonSymbol << '\n';
+ O << *AnonSymbol << ":\n";
O << "\tmflr r11\n";
- O << "\taddis r11,r11,ha16(";
- Info.LazyPtr->print(O, MAI);
- O << '-';
- Info.AnonSymbol->print(O, MAI);
- O << ")\n";
+ O << "\taddis r11,r11,ha16(" << *LazyPtr << '-' << *AnonSymbol
+ << ")\n";
O << "\tmtlr r0\n";
- O << (isPPC64 ? "\tldu" : "\tlwzu") << " r12,lo16(";
- Info.LazyPtr->print(O, MAI);
- O << '-';
- Info.AnonSymbol->print(O, MAI);
- O << ")(r11)\n";
+ O << (isPPC64 ? "\tldu" : "\tlwzu") << " r12,lo16(" << *LazyPtr
+ << '-' << *AnonSymbol << ")(r11)\n";
O << "\tmtctr r12\n";
O << "\tbctr\n";
OutStreamer.SwitchSection(LSPSection);
- Info.LazyPtr->print(O, MAI);
- O << ":\n";
- O << "\t.indirect_symbol " << I->getKeyData() << '\n';
- O << (isPPC64 ? "\t.quad" : "\t.long") << " dyld_stub_binding_helper\n";
- }
- } else if (!FnStubs.empty()) {
- const MCSection *StubSection =
- TLOFMacho.getMachOSection("__TEXT","__symbol_stub1",
- MCSectionMachO::S_SYMBOL_STUBS |
- MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
- 16, SectionKind::getText());
-
- for (StringMap<FnStubInfo>::iterator I = FnStubs.begin(), E = FnStubs.end();
- I != E; ++I) {
- OutStreamer.SwitchSection(StubSection);
- EmitAlignment(4);
- const FnStubInfo &Info = I->second;
- Info.Stub->print(O, MAI);
- O << ":\n";
- O << "\t.indirect_symbol " << I->getKeyData() << '\n';
- O << "\tlis r11,ha16(";
- Info.LazyPtr->print(O, MAI);
- O << ")\n";
- O << (isPPC64 ? "\tldu" : "\tlwzu") << " r12,lo16(";
- Info.LazyPtr->print(O, MAI);
- O << ")(r11)\n";
- O << "\tmtctr r12\n";
- O << "\tbctr\n";
- OutStreamer.SwitchSection(LSPSection);
- Info.LazyPtr->print(O, MAI);
- O << ":\n";
- O << "\t.indirect_symbol " << I->getKeyData() << '\n';
+ O << *LazyPtr << ":\n";
+ O << "\t.indirect_symbol " << *RawSym << '\n';
O << (isPPC64 ? "\t.quad" : "\t.long") << " dyld_stub_binding_helper\n";
}
+ O << '\n';
+ return;
}
-
+
+ const MCSection *StubSection =
+ TLOFMacho.getMachOSection("__TEXT","__symbol_stub1",
+ MCSectionMachO::S_SYMBOL_STUBS |
+ MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
+ 16, SectionKind::getText());
+ for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
+ const MCSymbol *Stub = Stubs[i].first;
+ const MCSymbol *RawSym = Stubs[i].second.getPointer();
+ const MCSymbol *LazyPtr = GetLazyPtr(Stub, OutContext);
+
+ OutStreamer.SwitchSection(StubSection);
+ EmitAlignment(4);
+ O << *Stub << ":\n";
+ O << "\t.indirect_symbol " << *RawSym << '\n';
+ O << "\tlis r11,ha16(" << *LazyPtr << ")\n";
+ O << (isPPC64 ? "\tldu" : "\tlwzu") << " r12,lo16(" << *LazyPtr
+ << ")(r11)\n";
+ O << "\tmtctr r12\n";
+ O << "\tbctr\n";
+ OutStreamer.SwitchSection(LSPSection);
+ O << *LazyPtr << ":\n";
+ O << "\t.indirect_symbol " << *RawSym << '\n';
+ O << (isPPC64 ? "\t.quad" : "\t.long") << " dyld_stub_binding_helper\n";
+ }
+
O << '\n';
+}
+
+
+bool PPCDarwinAsmPrinter::doFinalization(Module &M) {
+ bool isPPC64 = TM.getTargetData()->getPointerSizeInBits() == 64;
+
+ // Darwin/PPC always uses mach-o.
+ TargetLoweringObjectFileMachO &TLOFMacho =
+ static_cast<TargetLoweringObjectFileMachO &>(getObjFileLowering());
+ MachineModuleInfoMachO &MMIMacho =
+ MMI->getObjFileInfo<MachineModuleInfoMachO>();
+
+ MachineModuleInfoMachO::SymbolListTy Stubs = MMIMacho.GetFnStubList();
+ if (!Stubs.empty())
+ EmitFunctionStubs(Stubs);
if (MAI->doesSupportExceptionHandling() && MMI) {
// Add the (possibly multiple) personalities to the set of global values.
const std::vector<Function *> &Personalities = MMI->getPersonalities();
for (std::vector<Function *>::const_iterator I = Personalities.begin(),
E = Personalities.end(); I != E; ++I) {
- if (*I)
- GVStubs[Mang->getMangledName(*I)] =
- Mang->getMangledName(*I, "$non_lazy_ptr", true);
+ if (*I) {
+ MCSymbol *NLPSym = GetSymbolWithGlobalValueBase(*I, "$non_lazy_ptr");
+ MachineModuleInfoImpl::StubValueTy &StubSym =
+ MMIMacho.getGVStubEntry(NLPSym);
+ StubSym = MachineModuleInfoImpl::
+ StubValueTy(GetGlobalValueSymbol(*I), true);
+ }
}
}
+ // Output stubs for dynamically-linked functions.
+ Stubs = MMIMacho.GetGVStubList();
+
// Output macho stubs for external and common global variables.
- if (!GVStubs.empty()) {
+ if (!Stubs.empty()) {
// Switch with ".non_lazy_symbol_pointer" directive.
OutStreamer.SwitchSection(TLOFMacho.getNonLazySymbolPointerSection());
EmitAlignment(isPPC64 ? 3 : 2);
- for (StringMap<std::string>::iterator I = GVStubs.begin(),
- E = GVStubs.end(); I != E; ++I) {
- O << I->second << ":\n";
- O << "\t.indirect_symbol " << I->getKeyData() << '\n';
+ for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
+ O << *Stubs[i].first << ":\n";
+ O << "\t.indirect_symbol " << *Stubs[i].second.getPointer() << '\n';
+ // FIXME: This should use the "GV is external" bit.
O << (isPPC64 ? "\t.quad\t0\n" : "\t.long\t0\n");
}
}
- if (!HiddenGVStubs.empty()) {
+ Stubs = MMIMacho.GetHiddenGVStubList();
+ if (!Stubs.empty()) {
OutStreamer.SwitchSection(getObjFileLowering().getDataSection());
EmitAlignment(isPPC64 ? 3 : 2);
- for (StringMap<std::string>::iterator I = HiddenGVStubs.begin(),
- E = HiddenGVStubs.end(); I != E; ++I) {
- O << I->second << ":\n";
- O << (isPPC64 ? "\t.quad\t" : "\t.long\t") << I->getKeyData() << '\n';
+
+ for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
+ O << *Stubs[i].first << ":\n";
+ O << (isPPC64 ? "\t.quad\t" : "\t.long\t")
+ << *Stubs[i].second.getPointer() << '\n';
}
}
// implementation of multiple entry points). If this doesn't occur, the
// linker can safely perform dead code stripping. Since LLVM never generates
// code that does this, it is always safe to set.
- OutStreamer.EmitAssemblerFlag(MCStreamer::SubsectionsViaSymbols);
+ OutStreamer.EmitAssemblerFlag(MCAF_SubsectionsViaSymbols);
return AsmPrinter::doFinalization(M);
}
///
static AsmPrinter *createPPCAsmPrinterPass(formatted_raw_ostream &o,
TargetMachine &tm,
- const MCAsmInfo *tai,
- bool verbose) {
+ MCContext &Ctx, MCStreamer &Streamer,
+ const MCAsmInfo *tai) {
const PPCSubtarget *Subtarget = &tm.getSubtarget<PPCSubtarget>();
if (Subtarget->isDarwin())
- return new PPCDarwinAsmPrinter(o, tm, tai, verbose);
- return new PPCLinuxAsmPrinter(o, tm, tai, verbose);
+ return new PPCDarwinAsmPrinter(o, tm, Ctx, Streamer, tai);
+ return new PPCLinuxAsmPrinter(o, tm, Ctx, Streamer, tai);
}
// Force static initialization.