#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/Target/TargetAsmInfo.h"
-#include "llvm/Target/TargetLoweringObjectFile.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/MC/MCSymbol.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/Compiler.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 VISIBILITY_HIDDEN PPCAsmPrinter : public AsmPrinter {
+ class PPCAsmPrinter : public AsmPrinter {
protected:
- struct FnStubInfo {
- std::string Stub, LazyPtr, AnonSymbol;
-
- FnStubInfo() {}
-
- void Init(const GlobalValue *GV, Mangler *Mang) {
- // Already initialized.
- if (!Stub.empty()) return;
- Stub = Mang->getMangledName(GV, "$stub", true);
- LazyPtr = Mang->getMangledName(GV, "$lazy_ptr", true);
- AnonSymbol = Mang->getMangledName(GV, "$stub$tmp", true);
- }
-
- void Init(const std::string &GV, Mangler *Mang) {
- // Already initialized.
- if (!Stub.empty()) return;
- Stub = Mang->makeNameProper(GV + "$stub",
- Mangler::Private);
- LazyPtr = Mang->makeNameProper(GV + "$lazy_ptr",
- Mangler::Private);
- AnonSymbol = Mang->makeNameProper(GV + "$stub$tmp",
- Mangler::Private);
- }
- };
-
- StringMap<FnStubInfo> FnStubs;
- StringMap<std::string> GVStubs, HiddenGVStubs;
+ DenseMap<const MCSymbol*, const MCSymbol*> TOC;
const PPCSubtarget &Subtarget;
+ uint64_t LabelID;
public:
explicit PPCAsmPrinter(formatted_raw_ostream &O, TargetMachine &TM,
- const TargetAsmInfo *T, bool V)
- : AsmPrinter(O, TM, T, V),
- Subtarget(TM.getSubtarget<PPCSubtarget>()) {}
+ MCContext &Ctx, MCStreamer &Streamer,
+ const MCAsmInfo *T)
+ : AsmPrinter(O, TM, Ctx, Streamer, T),
+ Subtarget(TM.getSubtarget<PPCSubtarget>()), LabelID(0) {}
virtual const char *getPassName() const {
return "PowerPC Assembly Printer";
/// machine instruction was sufficiently described to print it, otherwise it
/// returns false.
void printInstruction(const MachineInstr *MI);
+ 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
return;
}
- const char *RegName = TM.getRegisterInfo()->get(RegNo).AsmName;
+ const char *RegName = getRegisterName(RegNo);
// Linux assembler (Others?) does not take register mnemonics.
// FIXME - What about special registers used in mfspr/mtspr?
if (!Subtarget.isDarwin()) RegName = stripRegisterPrefix(RegName);
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);
- O << FnInfo.Stub;
+ MCSymbol *Sym = GetSymbolWithGlobalValueBase(GV, "$stub");
+ MachineModuleInfoImpl::StubValueTy &StubSym =
+ MMI->getObjFileInfo<MachineModuleInfoMachO>().getFnStubEntry(Sym);
+ if (StubSym.getPointer() == 0)
+ StubSym = MachineModuleInfoImpl::
+ StubValueTy(GetGlobalValueSymbol(GV),!GV->hasInternalLinkage());
+ O << *Sym;
return;
}
}
if (MO.getType() == MachineOperand::MO_ExternalSymbol) {
- FnStubInfo &FnInfo =FnStubs[Mang->makeNameProper(MO.getSymbolName())];
- FnInfo.Init(MO.getSymbolName(), Mang);
- O << FnInfo.Stub;
+ SmallString<128> TempNameStr;
+ TempNameStr += StringRef(MO.getSymbolName());
+ TempNameStr += StringRef("$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;
}
}
printOperand(MI, OpNo+1);
}
- void printPredicateOperand(const MachineInstr *MI, unsigned OpNo,
- const char *Modifier);
+ void printTOCEntryLabel(const MachineInstr *MI, unsigned OpNo) {
+ const MachineOperand &MO = MI->getOperand(OpNo);
- virtual bool runOnMachineFunction(MachineFunction &F) = 0;
+ assert(MO.getType() == MachineOperand::MO_GlobalAddress);
- virtual void EmitExternalGlobal(const GlobalVariable *GV);
+ const MCSymbol *Sym = GetGlobalValueSymbol(MO.getGlobal());
+
+ // Map symbol -> label of TOC entry.
+ const MCSymbol *&TOCEntry = TOC[Sym];
+ if (TOCEntry == 0)
+ TOCEntry = OutContext.
+ GetOrCreateTemporarySymbol(StringRef(MAI->getPrivateGlobalPrefix()) +
+ "C" + Twine(LabelID++));
+
+ O << *TOCEntry << "@toc";
+ }
+
+ void printPredicateOperand(const MachineInstr *MI, unsigned OpNo,
+ const char *Modifier);
};
/// PPCLinuxAsmPrinter - PowerPC assembly printer, customized for Linux
- class VISIBILITY_HIDDEN PPCLinuxAsmPrinter : public PPCAsmPrinter {
+ class PPCLinuxAsmPrinter : public PPCAsmPrinter {
public:
explicit PPCLinuxAsmPrinter(formatted_raw_ostream &O, TargetMachine &TM,
- const TargetAsmInfo *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<DwarfWriter>();
PPCAsmPrinter::getAnalysisUsage(AU);
}
-
- void PrintGlobalVariable(const GlobalVariable *GVar);
};
/// PPCDarwinAsmPrinter - PowerPC assembly printer, customized for Darwin/Mac
/// OS X
- class VISIBILITY_HIDDEN PPCDarwinAsmPrinter : public PPCAsmPrinter {
+ class PPCDarwinAsmPrinter : public PPCAsmPrinter {
formatted_raw_ostream &OS;
public:
explicit PPCDarwinAsmPrinter(formatted_raw_ostream &O, TargetMachine &TM,
- const TargetAsmInfo *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 doInitialization(Module &M);
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:
- printBasicBlockLabel(MO.getMBB());
+ O << *MO.getMBB()->getSymbol(OutContext);
return;
case MachineOperand::MO_JumpTableIndex:
- O << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
+ O << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
<< '_' << MO.getIndex();
// FIXME: PIC relocation model
return;
case MachineOperand::MO_ConstantPoolIndex:
- O << TAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber()
+ O << MAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber()
<< '_' << MO.getIndex();
return;
+ case MachineOperand::MO_BlockAddress:
+ O << *GetBlockAddressSymbol(MO.getBlockAddress());
+ return;
case MachineOperand::MO_ExternalSymbol: {
// Computing the address of an external symbol, not calling it.
- std::string Name(TAI->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, "$non_lazy_ptr");
+
+ MachineModuleInfoImpl::StubValueTy &StubSym =
+ MMI->getObjFileInfo<MachineModuleInfoMachO>().
+ getHiddenGVStubEntry(SymToPrint);
+ if (StubSym.getPointer() == 0)
+ StubSym = MachineModuleInfoImpl::
+ StubValueTy(GetGlobalValueSymbol(GV),
+ !GV->hasInternalLinkage());
} else {
- Name = Mang->getMangledName(GV);
+ SymToPrint = GetGlobalValueSymbol(GV);
}
} else {
- Name = Mang->getMangledName(GV);
+ SymToPrint = GetGlobalValueSymbol(GV);
}
- O << Name;
+
+ O << *SymToPrint;
printOffset(MO.getOffset());
return;
}
}
-/// EmitExternalGlobal - In this case we need to use the indirect symbol.
-///
-void PPCAsmPrinter::EmitExternalGlobal(const GlobalVariable *GV) {
- std::string Name;
-
- if (TM.getRelocationModel() != Reloc::Static) {
- Name = Mang->getMangledName(GV, "$non_lazy_ptr", true);
- } else {
- Name = Mang->getMangledName(GV);
- }
- O << Name;
-}
-
/// PrintAsmOperand - Print out an operand for an inline asm expression.
///
bool PPCAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
return false;
}
+// At the moment, all inline asm memory operands are a single register.
+// In any case, the output of this routine should always be just one
+// assembler operand.
+
bool PPCAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
unsigned AsmVariant,
const char *ExtraCode) {
if (ExtraCode && ExtraCode[0])
return true; // Unknown modifier.
- if (MI->getOperand(OpNo).isReg())
- printMemRegReg(MI, OpNo);
- else
- printMemRegImm(MI, OpNo);
+ assert (MI->getOperand(OpNo).isReg());
+ O << "0(";
+ printOperand(MI, OpNo);
+ O << ")";
return false;
}
}
-/// 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;
-
+void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
// Check for slwi/srwi mnemonics.
if (MI->getOpcode() == PPC::RLWINM) {
- bool FoundMnemonic = false;
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 "; FoundMnemonic = true;
+ O << "\tslwi "; useSubstituteMnemonic = true;
}
if (SH <= 31 && MB == (32-SH) && ME == 31) {
- O << "\tsrwi "; FoundMnemonic = true;
+ O << "\tsrwi "; useSubstituteMnemonic = true;
SH = 32-SH;
}
- if (FoundMnemonic) {
+ if (useSubstituteMnemonic) {
printOperand(MI, 0);
O << ", ";
printOperand(MI, 1);
- O << ", " << (unsigned int)SH << '\n';
+ 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()) {
- O << "\tmr ";
- printOperand(MI, 0);
- O << ", ";
- printOperand(MI, 1);
- O << '\n';
- return;
- }
- } 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
printOperand(MI, 0);
O << ", ";
printOperand(MI, 1);
- O << ", " << (unsigned int)SH << '\n';
+ O << ", " << (unsigned int)SH;
+ OutStreamer.AddBlankLine();
return;
}
}
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();
- SwitchToSection(getObjFileLowering().SectionForGlobal(F, Mang, TM));
-
- switch (F->getLinkage()) {
- default: llvm_unreachable("Unknown linkage type!");
- case Function::PrivateLinkage:
- case Function::LinkerPrivateLinkage:
- case Function::InternalLinkage: // Symbols default to internal.
- break;
- case Function::ExternalLinkage:
- O << "\t.global\t" << CurrentFnName << '\n'
- << "\t.type\t" << CurrentFnName << ", @function\n";
- break;
- case Function::WeakAnyLinkage:
- case Function::WeakODRLinkage:
- case Function::LinkOnceAnyLinkage:
- case Function::LinkOnceODRLinkage:
- O << "\t.global\t" << CurrentFnName << '\n';
- O << "\t.weak\t" << CurrentFnName << '\n';
- break;
- }
-
- printVisibility(CurrentFnName, F->getVisibility());
-
- EmitAlignment(MF.getAlignment(), F);
- O << CurrentFnName << ":\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()) {
- printBasicBlockLabel(I, true, true);
- O << '\n';
- }
- 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" << CurrentFnName << ",.-" << CurrentFnName << '\n';
-
- // Print out jump tables referenced by the function.
- EmitJumpTableInfo(MF.getJumpTableInfo(), MF);
-
- SwitchToSection(getObjFileLowering().SectionForGlobal(F, Mang, TM));
-
- // Emit post-function debug information.
- DW->EndFunction(&MF);
-
- // We didn't modify anything.
- return false;
-}
-
-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;
-
- std::string name = Mang->getMangledName(GVar);
-
- printVisibility(name, GVar->getVisibility());
-
- Constant *C = GVar->getInitializer();
- const Type *Type = C->getType();
- unsigned Size = TD->getTypeAllocSize(Type);
- unsigned Align = TD->getPreferredAlignmentLog(GVar);
-
- SwitchToSection(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 " << name << '\n';
- O << "\t.type " << name << ", @object\n";
- O << name << ":\n";
- O << "\t.zero " << Size << '\n';
- } else if (GVar->hasLocalLinkage()) {
- O << TAI->getLCOMMDirective() << name << ',' << Size;
- } else {
- O << ".comm " << name << ',' << Size;
- }
- if (VerboseAsm) {
- O << "\t\t" << TAI->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:
- O << "\t.global " << name << '\n'
- << "\t.type " << name << ", @object\n"
- << "\t.weak " << name << '\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 " << name << '\n'
- << "\t.type " << name << ", @object\n";
- // FALL THROUGH
- case GlobalValue::InternalLinkage:
- case GlobalValue::PrivateLinkage:
- case GlobalValue::LinkerPrivateLinkage:
- break;
- default:
- llvm_unreachable("Unknown linkage type!");
- }
-
- EmitAlignment(Align, GVar);
- O << name << ":";
- if (VerboseAsm) {
- O << "\t\t\t\t" << TAI->getCommentString() << " '";
- WriteAsOperand(O, GVar, /*PrintType=*/false, GVar->getParent());
- O << "'";
- }
- O << '\n';
-
- EmitGlobalConstant(C);
- O << '\n';
+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";
}
-/// 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();
- SwitchToSection(getObjFileLowering().SectionForGlobal(F, Mang, TM));
-
- switch (F->getLinkage()) {
- default: llvm_unreachable("Unknown linkage type!");
- case Function::PrivateLinkage:
- case Function::LinkerPrivateLinkage:
- case Function::InternalLinkage: // Symbols default to internal.
- break;
- case Function::ExternalLinkage:
- O << "\t.globl\t" << CurrentFnName << '\n';
- break;
- case Function::WeakAnyLinkage:
- case Function::WeakODRLinkage:
- case Function::LinkOnceAnyLinkage:
- case Function::LinkOnceODRLinkage:
- O << "\t.globl\t" << CurrentFnName << '\n';
- O << "\t.weak_definition\t" << CurrentFnName << '\n';
- break;
- }
-
- printVisibility(CurrentFnName, F->getVisibility());
-
- EmitAlignment(MF.getAlignment(), F);
- O << CurrentFnName << ":\n";
-
- // Emit pre-function debug information.
- DW->BeginFunction(&MF);
+bool PPCLinuxAsmPrinter::doFinalization(Module &M) {
+ const TargetData *TD = TM.getTargetData();
- // 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();
+ bool isPPC64 = TD->getPointerSizeInBits() == 64;
- if (++I == MF.end() && MF.front().empty())
- O << "\tnop\n";
+ if (isPPC64 && !TOC.empty()) {
+ // FIXME 64-bit SVR4: Use MCSection here?
+ O << "\t.section\t\".toc\",\"aw\"\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()) {
- printBasicBlockLabel(I, true, true, VerboseAsm);
- O << '\n';
- }
- for (MachineBasicBlock::const_iterator II = I->begin(), IE = I->end();
- II != IE; ++II) {
- // Print the assembly for the instruction.
- printMachineInstruction(II);
+ // 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';
}
}
- // Print out jump tables referenced by the function.
- EmitJumpTableInfo(MF.getJumpTableInfo(), MF);
-
- // Emit post-function debug information.
- DW->EndFunction(&MF);
-
- // We didn't modify anything.
- return false;
+ return AsmPrinter::doFinalization(M);
}
-
-bool PPCDarwinAsmPrinter::doInitialization(Module &M) {
+void PPCDarwinAsmPrinter::EmitStartOfAsmFile(Module &M) {
static const char *const CPUDirectives[] = {
"",
"ppc",
assert(Directive <= PPC::DIR_64 && "Directive out of range.");
O << "\t.machine " << CPUDirectives[Directive] << '\n';
- bool Result = AsmPrinter::doInitialization(M);
- assert(MMI);
-
// Prime text sections so they are adjacent. This reduces the likelihood a
// large data or debug section causes a branch to exceed 16M limit.
TargetLoweringObjectFileMachO &TLOFMacho =
static_cast<TargetLoweringObjectFileMachO &>(getObjFileLowering());
- SwitchToSection(TLOFMacho.getTextCoalSection());
+ OutStreamer.SwitchSection(TLOFMacho.getTextCoalSection());
if (TM.getRelocationModel() == Reloc::PIC_) {
- SwitchToSection(TLOFMacho.getMachOSection("__TEXT", "__picsymbolstub1",
- MCSectionMachO::S_SYMBOL_STUBS |
- MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
- 32, SectionKind::getText()));
+ OutStreamer.SwitchSection(
+ TLOFMacho.getMachOSection("__TEXT", "__picsymbolstub1",
+ MCSectionMachO::S_SYMBOL_STUBS |
+ MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
+ 32, SectionKind::getText()));
} else if (TM.getRelocationModel() == Reloc::DynamicNoPIC) {
- SwitchToSection(TLOFMacho.getMachOSection("__TEXT","__symbol_stub1",
- MCSectionMachO::S_SYMBOL_STUBS |
- MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
- 16, SectionKind::getText()));
+ OutStreamer.SwitchSection(
+ TLOFMacho.getMachOSection("__TEXT","__symbol_stub1",
+ MCSectionMachO::S_SYMBOL_STUBS |
+ MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
+ 16, SectionKind::getText()));
}
- SwitchToSection(getObjFileLowering().getTextSection());
-
- return Result;
+ 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;
- }
-
- std::string name = Mang->getMangledName(GVar);
- printVisibility(name, 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);
- SwitchToSection(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 " << name << '\n';
- O << "\t.zerofill __DATA, __common, " << name << ", "
- << Size << ", " << Align;
- } else if (GVar->hasLocalLinkage()) {
- O << TAI->getLCOMMDirective() << name << ',' << Size << ',' << Align;
- } else if (!GVar->hasCommonLinkage()) {
- O << "\t.globl " << name << '\n'
- << TAI->getWeakDefDirective() << name << '\n';
- EmitAlignment(Align, GVar);
- O << name << ":";
- if (VerboseAsm) {
- O << "\t\t\t\t" << TAI->getCommentString() << " ";
- WriteAsOperand(O, GVar, /*PrintType=*/false, GVar->getParent());
- }
- O << '\n';
- EmitGlobalConstant(C);
- return;
- } else {
- O << ".comm " << name << ',' << Size;
- // Darwin 9 and above support aligned common data.
- if (Subtarget.isDarwin9())
- O << ',' << Align;
- }
- if (VerboseAsm) {
- O << "\t\t" << TAI->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:
- O << "\t.globl " << name << '\n'
- << "\t.weak_definition " << name << '\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 " << name << '\n';
- // FALL THROUGH
- case GlobalValue::InternalLinkage:
- case GlobalValue::PrivateLinkage:
- case GlobalValue::LinkerPrivateLinkage:
- break;
- default:
- llvm_unreachable("Unknown linkage type!");
- }
-
- EmitAlignment(Align, GVar);
- O << name << ":";
- if (VerboseAsm) {
- O << "\t\t\t\t" << TAI->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) {
- SwitchToSection(StubSection);
+ 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;
- O << Info.Stub << ":\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 << '\n';
- O << Info.AnonSymbol << ":\n";
+ O << "\tbcl 20,31," << *AnonSymbol << '\n';
+ O << *AnonSymbol << ":\n";
O << "\tmflr r11\n";
- O << "\taddis r11,r11,ha16(" << Info.LazyPtr << "-" << Info.AnonSymbol;
- O << ")\n";
+ O << "\taddis r11,r11,ha16(" << *LazyPtr << '-' << *AnonSymbol
+ << ")\n";
O << "\tmtlr r0\n";
- O << (isPPC64 ? "\tldu" : "\tlwzu") << " r12,lo16(";
- O << Info.LazyPtr << "-" << Info.AnonSymbol << ")(r11)\n";
+ O << (isPPC64 ? "\tldu" : "\tlwzu") << " r12,lo16(" << *LazyPtr
+ << '-' << *AnonSymbol << ")(r11)\n";
O << "\tmtctr r12\n";
O << "\tbctr\n";
- SwitchToSection(LSPSection);
- O << Info.LazyPtr << ":\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) {
- SwitchToSection(StubSection);
- EmitAlignment(4);
- const FnStubInfo &Info = I->second;
- O << Info.Stub << ":\n";
- O << "\t.indirect_symbol " << I->getKeyData() << '\n';
- O << "\tlis r11,ha16(" << Info.LazyPtr << ")\n";
- O << (isPPC64 ? "\tldu" : "\tlwzu") << " r12,lo16(";
- O << Info.LazyPtr << ")(r11)\n";
- O << "\tmtctr r12\n";
- O << "\tbctr\n";
- SwitchToSection(LSPSection);
- O << Info.LazyPtr << ":\n";
- O << "\t.indirect_symbol " << I->getKeyData() << '\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';
+ 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 (TAI->doesSupportExceptionHandling() && MMI) {
+ if (MAI->doesSupportExceptionHandling() && MMI) {
// Add the (possibly multiple) personalities to the set of global values.
// Only referenced functions get into the Personalities list.
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.
- SwitchToSection(TLOFMacho.getNonLazySymbolPointerSection());
+ 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()) {
- SwitchToSection(getObjFileLowering().getDataSection());
+ 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.
- O << "\t.subsections_via_symbols\n";
+ OutStreamer.EmitAssemblerFlag(MCAF_SubsectionsViaSymbols);
return AsmPrinter::doFinalization(M);
}
/// for a MachineFunction to the given output stream, in a format that the
/// Darwin assembler can deal with.
///
-static FunctionPass *createPPCAsmPrinterPass(formatted_raw_ostream &o,
- TargetMachine &tm,
- bool verbose) {
+static AsmPrinter *createPPCAsmPrinterPass(formatted_raw_ostream &o,
+ TargetMachine &tm,
+ MCContext &Ctx, MCStreamer &Streamer,
+ const MCAsmInfo *tai) {
const PPCSubtarget *Subtarget = &tm.getSubtarget<PPCSubtarget>();
if (Subtarget->isDarwin())
- return new PPCDarwinAsmPrinter(o, tm, tm.getTargetAsmInfo(), verbose);
- return new PPCLinuxAsmPrinter(o, tm, tm.getTargetAsmInfo(), verbose);
+ return new PPCDarwinAsmPrinter(o, tm, Ctx, Streamer, tai);
+ return new PPCLinuxAsmPrinter(o, tm, Ctx, Streamer, tai);
}
// Force static initialization.
extern "C" void LLVMInitializePowerPCAsmPrinter() {
TargetRegistry::RegisterAsmPrinter(ThePPC32Target, createPPCAsmPrinterPass);
-
TargetRegistry::RegisterAsmPrinter(ThePPC64Target, createPPCAsmPrinterPass);
}
projects / oota-llvm.git / blobdiff