#define DEBUG_TYPE "asmprinter"
namespace {
- class PPCAsmPrinter : public AsmPrinter {
- protected:
- MapVector<MCSymbol*, MCSymbol*> TOC;
- const PPCSubtarget *Subtarget;
- StackMaps SM;
- public:
- explicit PPCAsmPrinter(TargetMachine &TM,
- std::unique_ptr<MCStreamer> Streamer)
- : AsmPrinter(TM, std::move(Streamer)), SM(*this) {}
-
- const char *getPassName() const override {
- return "PowerPC Assembly Printer";
- }
+class PPCAsmPrinter : public AsmPrinter {
+protected:
+ MapVector<MCSymbol *, MCSymbol *> TOC;
+ const PPCSubtarget *Subtarget;
+ StackMaps SM;
+
+public:
+ explicit PPCAsmPrinter(TargetMachine &TM,
+ std::unique_ptr<MCStreamer> Streamer)
+ : AsmPrinter(TM, std::move(Streamer)), SM(*this) {}
+
+ const char *getPassName() const override {
+ return "PowerPC Assembly Printer";
+ }
MCSymbol *lookUpOrCreateTOCEntry(MCSymbol *Sym);
void EmitEndOfAsmFile(Module &M) override;
- void LowerSTACKMAP(MCStreamer &OutStreamer, StackMaps &SM,
- const MachineInstr &MI);
- void LowerPATCHPOINT(MCStreamer &OutStreamer, StackMaps &SM,
- const MachineInstr &MI);
+ void LowerSTACKMAP(StackMaps &SM, const MachineInstr &MI);
+ void LowerPATCHPOINT(StackMaps &SM, const MachineInstr &MI);
void EmitTlsCall(const MachineInstr *MI, MCSymbolRefExpr::VariantKind VK);
bool runOnMachineFunction(MachineFunction &MF) override {
Subtarget = &MF.getSubtarget<PPCSubtarget>();
return RegName + 1;
case 'c': if (RegName[1] == 'r') return RegName + 2;
}
-
+
return RegName;
}
void PPCAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
raw_ostream &O) {
- const DataLayout *DL = TM.getDataLayout();
+ const DataLayout &DL = getDataLayout();
const MachineOperand &MO = MI->getOperand(OpNo);
-
+
switch (MO.getType()) {
case MachineOperand::MO_Register: {
const char *RegName = PPCInstPrinter::getRegisterName(MO.getReg());
MO.getMBB()->getSymbol()->print(O, MAI);
return;
case MachineOperand::MO_ConstantPoolIndex:
- O << DL->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber()
- << '_' << MO.getIndex();
+ O << DL.getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << '_'
+ << MO.getIndex();
return;
case MachineOperand::MO_BlockAddress:
GetBlockAddressSymbol(MO.getBlockAddress())->print(O, MAI);
// External or weakly linked global variables need non-lazily-resolved stubs
if (TM.getRelocationModel() != Reloc::Static &&
- (GV->isDeclaration() || GV->isWeakForLinker())) {
+ !GV->isStrongDefinitionForLinker()) {
if (!GV->hasHiddenVisibility()) {
SymToPrint = getSymbolWithGlobalValueBase(GV, "$non_lazy_ptr");
- MachineModuleInfoImpl::StubValueTy &StubSym =
- MMI->getObjFileInfo<MachineModuleInfoMachO>()
- .getGVStubEntry(SymToPrint);
+ MachineModuleInfoImpl::StubValueTy &StubSym =
+ MMI->getObjFileInfo<MachineModuleInfoMachO>().getGVStubEntry(
+ SymToPrint);
if (!StubSym.getPointer())
StubSym = MachineModuleInfoImpl::
StubValueTy(getSymbol(GV), !GV->hasInternalLinkage());
} else if (GV->isDeclaration() || GV->hasCommonLinkage() ||
GV->hasAvailableExternallyLinkage()) {
SymToPrint = getSymbolWithGlobalValueBase(GV, "$non_lazy_ptr");
-
- MachineModuleInfoImpl::StubValueTy &StubSym =
- MMI->getObjFileInfo<MachineModuleInfoMachO>().
- getHiddenGVStubEntry(SymToPrint);
+
+ MachineModuleInfoImpl::StubValueTy &StubSym =
+ MMI->getObjFileInfo<MachineModuleInfoMachO>().getHiddenGVStubEntry(
+ SymToPrint);
if (!StubSym.getPointer())
StubSym = MachineModuleInfoImpl::
StubValueTy(getSymbol(GV), !GV->hasInternalLinkage());
}
case 'U': // Print 'u' for update form.
case 'X': // Print 'x' for indexed form.
- {
- // FIXME: Currently for PowerPC memory operands are always loaded
- // into a register, so we never get an update or indexed form.
- // This is bad even for offset forms, since even if we know we
- // have a value in -16(r1), we will generate a load into r<n>
- // and then load from 0(r<n>). Until that issue is fixed,
- // tolerate 'U' and 'X' but don't output anything.
- assert(MI->getOperand(OpNo).isReg());
- return false;
- }
+ {
+ // FIXME: Currently for PowerPC memory operands are always loaded
+ // into a register, so we never get an update or indexed form.
+ // This is bad even for offset forms, since even if we know we
+ // have a value in -16(r1), we will generate a load into r<n>
+ // and then load from 0(r<n>). Until that issue is fixed,
+ // tolerate 'U' and 'X' but don't output anything.
+ assert(MI->getOperand(OpNo).isReg());
+ return false;
+ }
}
}
return false;
}
-
/// lookUpOrCreateTOCEntry -- Given a symbol, look up whether a TOC entry
/// exists for it. If not, create one. Then return a symbol that references
/// the TOC entry.
SM.serializeToStackMapSection();
}
-void PPCAsmPrinter::LowerSTACKMAP(MCStreamer &OutStreamer, StackMaps &SM,
- const MachineInstr &MI) {
+void PPCAsmPrinter::LowerSTACKMAP(StackMaps &SM, const MachineInstr &MI) {
unsigned NumNOPBytes = MI.getOperand(1).getImm();
SM.recordStackMap(MI);
// Emit nops.
for (unsigned i = 0; i < NumNOPBytes; i += 4)
- EmitToStreamer(OutStreamer, MCInstBuilder(PPC::NOP));
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::NOP));
}
// Lower a patchpoint of the form:
// [<def>], <id>, <numBytes>, <target>, <numArgs>
-void PPCAsmPrinter::LowerPATCHPOINT(MCStreamer &OutStreamer, StackMaps &SM,
- const MachineInstr &MI) {
+void PPCAsmPrinter::LowerPATCHPOINT(StackMaps &SM, const MachineInstr &MI) {
SM.recordPatchPoint(MI);
PatchPointOpers Opers(&MI);
- int64_t CallTarget = Opers.getMetaOper(PatchPointOpers::TargetPos).getImm();
unsigned EncodedBytes = 0;
- if (CallTarget) {
- assert((CallTarget & 0xFFFFFFFFFFFF) == CallTarget &&
- "High 16 bits of call target should be zero.");
- unsigned ScratchReg = MI.getOperand(Opers.getNextScratchIdx()).getReg();
- EncodedBytes = 6*4;
- // Materialize the jump address:
- EmitToStreamer(OutStreamer, MCInstBuilder(PPC::LI8)
- .addReg(ScratchReg)
- .addImm((CallTarget >> 32) & 0xFFFF));
- EmitToStreamer(OutStreamer, MCInstBuilder(PPC::RLDIC)
- .addReg(ScratchReg)
- .addReg(ScratchReg)
- .addImm(32).addImm(16));
- EmitToStreamer(OutStreamer, MCInstBuilder(PPC::ORIS8)
- .addReg(ScratchReg)
- .addReg(ScratchReg)
- .addImm((CallTarget >> 16) & 0xFFFF));
- EmitToStreamer(OutStreamer, MCInstBuilder(PPC::ORI8)
- .addReg(ScratchReg)
- .addReg(ScratchReg)
- .addImm(CallTarget & 0xFFFF));
-
- EmitToStreamer(OutStreamer, MCInstBuilder(PPC::MTCTR8).addReg(ScratchReg));
- EmitToStreamer(OutStreamer, MCInstBuilder(PPC::BCTRL8));
+ const MachineOperand &CalleeMO =
+ Opers.getMetaOper(PatchPointOpers::TargetPos);
+
+ if (CalleeMO.isImm()) {
+ int64_t CallTarget = Opers.getMetaOper(PatchPointOpers::TargetPos).getImm();
+ if (CallTarget) {
+ assert((CallTarget & 0xFFFFFFFFFFFF) == CallTarget &&
+ "High 16 bits of call target should be zero.");
+ unsigned ScratchReg = MI.getOperand(Opers.getNextScratchIdx()).getReg();
+ EncodedBytes = 0;
+ // Materialize the jump address:
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::LI8)
+ .addReg(ScratchReg)
+ .addImm((CallTarget >> 32) & 0xFFFF));
+ ++EncodedBytes;
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::RLDIC)
+ .addReg(ScratchReg)
+ .addReg(ScratchReg)
+ .addImm(32).addImm(16));
+ ++EncodedBytes;
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::ORIS8)
+ .addReg(ScratchReg)
+ .addReg(ScratchReg)
+ .addImm((CallTarget >> 16) & 0xFFFF));
+ ++EncodedBytes;
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::ORI8)
+ .addReg(ScratchReg)
+ .addReg(ScratchReg)
+ .addImm(CallTarget & 0xFFFF));
+
+ // Save the current TOC pointer before the remote call.
+ int TOCSaveOffset = Subtarget->isELFv2ABI() ? 24 : 40;
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::STD)
+ .addReg(PPC::X2)
+ .addImm(TOCSaveOffset)
+ .addReg(PPC::X1));
+ ++EncodedBytes;
+
+ // If we're on ELFv1, then we need to load the actual function pointer
+ // from the function descriptor.
+ if (!Subtarget->isELFv2ABI()) {
+ // Load the new TOC pointer and the function address, but not r11
+ // (needing this is rare, and loading it here would prevent passing it
+ // via a 'nest' parameter.
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::LD)
+ .addReg(PPC::X2)
+ .addImm(8)
+ .addReg(ScratchReg));
+ ++EncodedBytes;
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::LD)
+ .addReg(ScratchReg)
+ .addImm(0)
+ .addReg(ScratchReg));
+ ++EncodedBytes;
+ }
+
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::MTCTR8)
+ .addReg(ScratchReg));
+ ++EncodedBytes;
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::BCTRL8));
+ ++EncodedBytes;
+
+ // Restore the TOC pointer after the call.
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::LD)
+ .addReg(PPC::X2)
+ .addImm(TOCSaveOffset)
+ .addReg(PPC::X1));
+ ++EncodedBytes;
+ }
+ } else if (CalleeMO.isGlobal()) {
+ const GlobalValue *GValue = CalleeMO.getGlobal();
+ MCSymbol *MOSymbol = getSymbol(GValue);
+ const MCExpr *SymVar = MCSymbolRefExpr::create(MOSymbol, OutContext);
+
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::BL8_NOP)
+ .addExpr(SymVar));
+ EncodedBytes += 2;
}
+ // Each instruction is 4 bytes.
+ EncodedBytes *= 4;
+
// Emit padding.
unsigned NumBytes = Opers.getMetaOper(PatchPointOpers::NBytesPos).getImm();
assert(NumBytes >= EncodedBytes &&
assert((NumBytes - EncodedBytes) % 4 == 0 &&
"Invalid number of NOP bytes requested!");
for (unsigned i = EncodedBytes; i < NumBytes; i += 4)
- EmitToStreamer(OutStreamer, MCInstBuilder(PPC::NOP));
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::NOP));
}
/// EmitTlsCall -- Given a GETtls[ld]ADDR[32] instruction, print a
void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
MCInst TmpInst;
bool isPPC64 = Subtarget->isPPC64();
- bool isDarwin = Triple(TM.getTargetTriple()).isOSDarwin();
+ bool isDarwin = TM.getTargetTriple().isOSDarwin();
const Module *M = MF->getFunction()->getParent();
PICLevel::Level PL = M->getPICLevel();
-
+
// Lower multi-instruction pseudo operations.
switch (MI->getOpcode()) {
default: break;
case TargetOpcode::DBG_VALUE:
llvm_unreachable("Should be handled target independently");
case TargetOpcode::STACKMAP:
- return LowerSTACKMAP(*OutStreamer, SM, *MI);
+ return LowerSTACKMAP(SM, *MI);
case TargetOpcode::PATCHPOINT:
- return LowerPATCHPOINT(*OutStreamer, SM, *MI);
+ return LowerPATCHPOINT(SM, *MI);
case PPC::MoveGOTtoLR: {
// Transform %LR = MoveGOTtoLR
case PPC::MovePCtoLR:
case PPC::MovePCtoLR8: {
// Transform %LR = MovePCtoLR
- // Into this, where the label is the PIC base:
+ // Into this, where the label is the PIC base:
// bl L1$pb
// L1$pb:
MCSymbol *PICBase = MF->getPICBaseSymbol();
-
+
// Emit the 'bl'.
- EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::BL)
- // FIXME: We would like an efficient form for this, so we don't have to do
- // a lot of extra uniquing.
- .addExpr(MCSymbolRefExpr::create(PICBase, OutContext)));
-
+ EmitToStreamer(*OutStreamer,
+ MCInstBuilder(PPC::BL)
+ // FIXME: We would like an efficient form for this, so we
+ // don't have to do a lot of extra uniquing.
+ .addExpr(MCSymbolRefExpr::create(PICBase, OutContext)));
+
// Emit the label.
OutStreamer->EmitLabel(PICBase);
return;
EmitToStreamer(*OutStreamer, TmpInst);
return;
}
-
+
case PPC::ADDIStocHA: {
// Transform %Xd = ADDIStocHA %X2, <ga:@sym>
LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, isDarwin);
MO.isBlockAddress()) &&
"Invalid operand for ADDIStocHA!");
MCSymbol *MOSymbol = nullptr;
- bool IsExternal = false;
- bool IsNonLocalFunction = false;
- bool IsCommon = false;
- bool IsAvailExt = false;
+ bool GlobalToc = false;
if (MO.isGlobal()) {
const GlobalValue *GV = MO.getGlobal();
MOSymbol = getSymbol(GV);
- IsExternal = GV->isDeclaration();
- IsCommon = GV->hasCommonLinkage();
- IsNonLocalFunction = GV->getType()->getElementType()->isFunctionTy() &&
- (GV->isDeclaration() || GV->isWeakForLinker());
- IsAvailExt = GV->hasAvailableExternallyLinkage();
- } else if (MO.isCPI())
+ unsigned char GVFlags = Subtarget->classifyGlobalReference(GV);
+ GlobalToc = (GVFlags & PPCII::MO_NLP_FLAG);
+ } else if (MO.isCPI()) {
MOSymbol = GetCPISymbol(MO.getIndex());
- else if (MO.isJTI())
+ } else if (MO.isJTI()) {
MOSymbol = GetJTISymbol(MO.getIndex());
- else if (MO.isBlockAddress())
+ } else if (MO.isBlockAddress()) {
MOSymbol = GetBlockAddressSymbol(MO.getBlockAddress());
+ }
- if (IsExternal || IsNonLocalFunction || IsCommon || IsAvailExt ||
- MO.isJTI() || MO.isBlockAddress() ||
+ if (GlobalToc || MO.isJTI() || MO.isBlockAddress() ||
TM.getCodeModel() == CodeModel::Large)
MOSymbol = lookUpOrCreateTOCEntry(MOSymbol);
MOSymbol = lookUpOrCreateTOCEntry(MOSymbol);
}
else if (MO.isGlobal()) {
- const GlobalValue *GValue = MO.getGlobal();
- MOSymbol = getSymbol(GValue);
- if (GValue->getType()->getElementType()->isFunctionTy() ||
- GValue->isDeclaration() || GValue->hasCommonLinkage() ||
- GValue->hasAvailableExternallyLinkage() ||
- TM.getCodeModel() == CodeModel::Large)
- MOSymbol = lookUpOrCreateTOCEntry(MOSymbol);
+ const GlobalValue *GV = MO.getGlobal();
+ MOSymbol = getSymbol(GV);
+ DEBUG(
+ unsigned char GVFlags = Subtarget->classifyGlobalReference(GV);
+ assert((GVFlags & PPCII::MO_NLP_FLAG) &&
+ "LDtocL used on symbol that could be accessed directly is "
+ "invalid. Must match ADDIStocHA."));
+ MOSymbol = lookUpOrCreateTOCEntry(MOSymbol);
}
const MCExpr *Exp =
const MachineOperand &MO = MI->getOperand(2);
assert((MO.isGlobal() || MO.isCPI()) && "Invalid operand for ADDItocL");
MCSymbol *MOSymbol = nullptr;
- bool IsExternal = false;
- bool IsNonLocalFunction = false;
if (MO.isGlobal()) {
const GlobalValue *GV = MO.getGlobal();
+ DEBUG(
+ unsigned char GVFlags = Subtarget->classifyGlobalReference(GV);
+ assert (
+ !(GVFlags & PPCII::MO_NLP_FLAG) &&
+ "Interposable definitions must use indirect access."));
MOSymbol = getSymbol(GV);
- IsExternal = GV->isDeclaration();
- IsNonLocalFunction = GV->getType()->getElementType()->isFunctionTy() &&
- (GV->isDeclaration() || GV->isWeakForLinker());
- } else if (MO.isCPI())
+ } else if (MO.isCPI()) {
MOSymbol = GetCPISymbol(MO.getIndex());
-
- if (IsNonLocalFunction || IsExternal ||
- TM.getCodeModel() == CodeModel::Large)
- MOSymbol = lookUpOrCreateTOCEntry(MOSymbol);
+ }
const MCExpr *Exp =
MCSymbolRefExpr::create(MOSymbol, MCSymbolRefExpr::VK_PPC_TOC_LO,
return;
}
case PPC::PPC32GOT: {
- MCSymbol *GOTSymbol = OutContext.getOrCreateSymbol(StringRef("_GLOBAL_OFFSET_TABLE_"));
- const MCExpr *SymGotTlsL =
- MCSymbolRefExpr::create(GOTSymbol, MCSymbolRefExpr::VK_PPC_LO,
- OutContext);
- const MCExpr *SymGotTlsHA =
- MCSymbolRefExpr::create(GOTSymbol, MCSymbolRefExpr::VK_PPC_HA,
- OutContext);
+ MCSymbol *GOTSymbol =
+ OutContext.getOrCreateSymbol(StringRef("_GLOBAL_OFFSET_TABLE_"));
+ const MCExpr *SymGotTlsL = MCSymbolRefExpr::create(
+ GOTSymbol, MCSymbolRefExpr::VK_PPC_LO, OutContext);
+ const MCExpr *SymGotTlsHA = MCSymbolRefExpr::create(
+ GOTSymbol, MCSymbolRefExpr::VK_PPC_HA, OutContext);
EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::LI)
.addReg(MI->getOperand(0).getReg())
.addExpr(SymGotTlsL));
return;
}
case PPC::ADDISdtprelHA:
- // Transform: %Xd = ADDISdtprelHA %X3, <ga:@sym>
- // Into: %Xd = ADDIS8 %X3, sym@dtprel@ha
+ // Transform: %Xd = ADDISdtprelHA %Xs, <ga:@sym>
+ // Into: %Xd = ADDIS8 %Xs, sym@dtprel@ha
case PPC::ADDISdtprelHA32: {
- // Transform: %Rd = ADDISdtprelHA32 %R3, <ga:@sym>
- // Into: %Rd = ADDIS %R3, sym@dtprel@ha
+ // Transform: %Rd = ADDISdtprelHA32 %Rs, <ga:@sym>
+ // Into: %Rd = ADDIS %Rs, sym@dtprel@ha
const MachineOperand &MO = MI->getOperand(2);
const GlobalValue *GValue = MO.getGlobal();
MCSymbol *MOSymbol = getSymbol(GValue);
*OutStreamer,
MCInstBuilder(Subtarget->isPPC64() ? PPC::ADDIS8 : PPC::ADDIS)
.addReg(MI->getOperand(0).getReg())
- .addReg(Subtarget->isPPC64() ? PPC::X3 : PPC::R3)
+ .addReg(MI->getOperand(1).getReg())
.addExpr(SymDtprel));
return;
}
void PPCLinuxAsmPrinter::EmitFunctionEntryLabel() {
// linux/ppc32 - Normal entry label.
- if (!Subtarget->isPPC64() &&
- (TM.getRelocationModel() != Reloc::PIC_ ||
+ if (!Subtarget->isPPC64() &&
+ (TM.getRelocationModel() != Reloc::PIC_ ||
MF->getFunction()->getParent()->getPICLevel() == PICLevel::Small))
return AsmPrinter::EmitFunctionEntryLabel();
if (!Subtarget->isPPC64()) {
const PPCFunctionInfo *PPCFI = MF->getInfo<PPCFunctionInfo>();
- if (PPCFI->usesPICBase()) {
+ if (PPCFI->usesPICBase()) {
MCSymbol *RelocSymbol = PPCFI->getPICOffsetSymbol();
MCSymbol *PICBase = MF->getPICBaseSymbol();
OutStreamer->EmitLabel(RelocSymbol);
}
// ELFv2 ABI - Normal entry label.
- if (Subtarget->isELFv2ABI())
+ if (Subtarget->isELFv2ABI()) {
+ // In the Large code model, we allow arbitrary displacements between
+ // the text section and its associated TOC section. We place the
+ // full 8-byte offset to the TOC in memory immediatedly preceding
+ // the function global entry point.
+ if (TM.getCodeModel() == CodeModel::Large
+ && !MF->getRegInfo().use_empty(PPC::X2)) {
+ const PPCFunctionInfo *PPCFI = MF->getInfo<PPCFunctionInfo>();
+
+ MCSymbol *TOCSymbol = OutContext.getOrCreateSymbol(StringRef(".TOC."));
+ MCSymbol *GlobalEPSymbol = PPCFI->getGlobalEPSymbol();
+ const MCExpr *TOCDeltaExpr =
+ MCBinaryExpr::createSub(MCSymbolRefExpr::create(TOCSymbol, OutContext),
+ MCSymbolRefExpr::create(GlobalEPSymbol,
+ OutContext),
+ OutContext);
+
+ OutStreamer->EmitLabel(PPCFI->getTOCOffsetSymbol());
+ OutStreamer->EmitValue(TOCDeltaExpr, 8);
+ }
return AsmPrinter::EmitFunctionEntryLabel();
+ }
// Emit an official procedure descriptor.
MCSectionSubPair Current = OutStreamer->getCurrentSection();
OutStreamer->SwitchSection(Current.first, Current.second);
}
-
bool PPCLinuxAsmPrinter::doFinalization(Module &M) {
- const DataLayout *TD = TM.getDataLayout();
+ const DataLayout &DL = getDataLayout();
- bool isPPC64 = TD->getPointerSizeInBits() == 64;
+ bool isPPC64 = DL.getPointerSizeInBits() == 64;
PPCTargetStreamer &TS =
static_cast<PPCTargetStreamer &>(*OutStreamer->getTargetStreamer());
// thus emit a prefix sequence along the following lines:
//
// func:
+ // .Lfunc_gepNN:
+ // # global entry point
+ // addis r2,r12,(.TOC.-.Lfunc_gepNN)@ha
+ // addi r2,r2,(.TOC.-.Lfunc_gepNN)@l
+ // .Lfunc_lepNN:
+ // .localentry func, .Lfunc_lepNN-.Lfunc_gepNN
+ // # local entry point, followed by function body
+ //
+ // For the Large code model, we create
+ //
+ // .Lfunc_tocNN:
+ // .quad .TOC.-.Lfunc_gepNN # done by EmitFunctionEntryLabel
+ // func:
+ // .Lfunc_gepNN:
// # global entry point
- // addis r2,r12,(.TOC.-func)@ha
- // addi r2,r2,(.TOC.-func)@l
- // .localentry func, .-func
+ // ld r2,.Lfunc_tocNN-.Lfunc_gepNN(r12)
+ // add r2,r2,r12
+ // .Lfunc_lepNN:
+ // .localentry func, .Lfunc_lepNN-.Lfunc_gepNN
// # local entry point, followed by function body
//
// This ensures we have r2 set up correctly while executing the function
if (Subtarget->isELFv2ABI()
// Only do all that if the function uses r2 in the first place.
&& !MF->getRegInfo().use_empty(PPC::X2)) {
+ const PPCFunctionInfo *PPCFI = MF->getInfo<PPCFunctionInfo>();
- MCSymbol *GlobalEntryLabel = OutContext.createTempSymbol();
+ MCSymbol *GlobalEntryLabel = PPCFI->getGlobalEPSymbol();
OutStreamer->EmitLabel(GlobalEntryLabel);
const MCSymbolRefExpr *GlobalEntryLabelExp =
MCSymbolRefExpr::create(GlobalEntryLabel, OutContext);
- MCSymbol *TOCSymbol = OutContext.getOrCreateSymbol(StringRef(".TOC."));
- const MCExpr *TOCDeltaExpr =
- MCBinaryExpr::createSub(MCSymbolRefExpr::create(TOCSymbol, OutContext),
- GlobalEntryLabelExp, OutContext);
+ if (TM.getCodeModel() != CodeModel::Large) {
+ MCSymbol *TOCSymbol = OutContext.getOrCreateSymbol(StringRef(".TOC."));
+ const MCExpr *TOCDeltaExpr =
+ MCBinaryExpr::createSub(MCSymbolRefExpr::create(TOCSymbol, OutContext),
+ GlobalEntryLabelExp, OutContext);
- const MCExpr *TOCDeltaHi =
- PPCMCExpr::createHa(TOCDeltaExpr, false, OutContext);
- EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::ADDIS)
- .addReg(PPC::X2)
- .addReg(PPC::X12)
- .addExpr(TOCDeltaHi));
-
- const MCExpr *TOCDeltaLo =
- PPCMCExpr::createLo(TOCDeltaExpr, false, OutContext);
- EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::ADDI)
- .addReg(PPC::X2)
- .addReg(PPC::X2)
- .addExpr(TOCDeltaLo));
-
- MCSymbol *LocalEntryLabel = OutContext.createTempSymbol();
+ const MCExpr *TOCDeltaHi =
+ PPCMCExpr::createHa(TOCDeltaExpr, false, OutContext);
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::ADDIS)
+ .addReg(PPC::X2)
+ .addReg(PPC::X12)
+ .addExpr(TOCDeltaHi));
+
+ const MCExpr *TOCDeltaLo =
+ PPCMCExpr::createLo(TOCDeltaExpr, false, OutContext);
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::ADDI)
+ .addReg(PPC::X2)
+ .addReg(PPC::X2)
+ .addExpr(TOCDeltaLo));
+ } else {
+ MCSymbol *TOCOffset = PPCFI->getTOCOffsetSymbol();
+ const MCExpr *TOCOffsetDeltaExpr =
+ MCBinaryExpr::createSub(MCSymbolRefExpr::create(TOCOffset, OutContext),
+ GlobalEntryLabelExp, OutContext);
+
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::LD)
+ .addReg(PPC::X2)
+ .addExpr(TOCOffsetDeltaExpr)
+ .addReg(PPC::X12));
+ EmitToStreamer(*OutStreamer, MCInstBuilder(PPC::ADD8)
+ .addReg(PPC::X2)
+ .addReg(PPC::X2)
+ .addReg(PPC::X12));
+ }
+
+ MCSymbol *LocalEntryLabel = PPCFI->getLocalEPSymbol();
OutStreamer->EmitLabel(LocalEntryLabel);
const MCSymbolRefExpr *LocalEntryLabelExp =
MCSymbolRefExpr::create(LocalEntryLabel, OutContext);
// Prime text sections so they are adjacent. This reduces the likelihood a
// large data or debug section causes a branch to exceed 16M limit.
- const TargetLoweringObjectFileMachO &TLOFMacho =
- static_cast<const TargetLoweringObjectFileMachO &>(getObjFileLowering());
+ const TargetLoweringObjectFileMachO &TLOFMacho =
+ static_cast<const TargetLoweringObjectFileMachO &>(getObjFileLowering());
OutStreamer->SwitchSection(TLOFMacho.getTextCoalSection());
if (TM.getRelocationModel() == Reloc::PIC_) {
OutStreamer->SwitchSection(
void PPCDarwinAsmPrinter::
EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs) {
- bool isPPC64 = TM.getDataLayout()->getPointerSizeInBits() == 64;
+ bool isPPC64 = getDataLayout().getPointerSizeInBits() == 64;
// Construct a local MCSubtargetInfo and shadow EmitToStreamer here.
// This is because the MachineFunction won't exist (but have not yet been
// freed) and since we're at the global level we can use the default
// constructed subtarget.
std::unique_ptr<MCSubtargetInfo> STI(TM.getTarget().createMCSubtargetInfo(
- TM.getTargetTriple(), TM.getTargetCPU(), TM.getTargetFeatureString()));
+ TM.getTargetTriple().str(), TM.getTargetCPU(),
+ TM.getTargetFeatureString()));
auto EmitToStreamer = [&STI] (MCStreamer &S, const MCInst &Inst) {
S.EmitInstruction(Inst, *STI);
};
- const TargetLoweringObjectFileMachO &TLOFMacho =
- static_cast<const TargetLoweringObjectFileMachO &>(getObjFileLowering());
+ const TargetLoweringObjectFileMachO &TLOFMacho =
+ static_cast<const TargetLoweringObjectFileMachO &>(getObjFileLowering());
// .lazy_symbol_pointer
MCSection *LSPSection = TLOFMacho.getLazySymbolPointerSection();
for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
OutStreamer->SwitchSection(StubSection);
EmitAlignment(4);
-
+
MCSymbol *Stub = Stubs[i].first;
MCSymbol *RawSym = Stubs[i].second.getPointer();
MCSymbol *LazyPtr = GetLazyPtr(Stub, OutContext);
MCSymbol *AnonSymbol = GetAnonSym(Stub, OutContext);
-
+
OutStreamer->EmitLabel(Stub);
OutStreamer->EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol);
OutStreamer->EmitSymbolValue(DyldStubBindingHelper, 4);
}
}
-
+
OutStreamer->AddBlankLine();
}
-
bool PPCDarwinAsmPrinter::doFinalization(Module &M) {
- bool isPPC64 = TM.getDataLayout()->getPointerSizeInBits() == 64;
+ bool isPPC64 = getDataLayout().getPointerSizeInBits() == 64;
// Darwin/PPC always uses mach-o.
- const TargetLoweringObjectFileMachO &TLOFMacho =
- static_cast<const TargetLoweringObjectFileMachO &>(getObjFileLowering());
+ const TargetLoweringObjectFileMachO &TLOFMacho =
+ static_cast<const TargetLoweringObjectFileMachO &>(getObjFileLowering());
MachineModuleInfoMachO &MMIMacho =
- MMI->getObjFileInfo<MachineModuleInfoMachO>();
-
+ 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.
// Only referenced functions get into the Personalities list.
- const std::vector<const Function*> &Personalities = MMI->getPersonalities();
- for (std::vector<const Function*>::const_iterator I = Personalities.begin(),
- E = Personalities.end(); I != E; ++I) {
- if (*I) {
- MCSymbol *NLPSym = getSymbolWithGlobalValueBase(*I, "$non_lazy_ptr");
+ for (const Function *Personality : MMI->getPersonalities()) {
+ if (Personality) {
+ MCSymbol *NLPSym =
+ getSymbolWithGlobalValueBase(Personality, "$non_lazy_ptr");
MachineModuleInfoImpl::StubValueTy &StubSym =
- MMIMacho.getGVStubEntry(NLPSym);
- StubSym = MachineModuleInfoImpl::StubValueTy(getSymbol(*I), true);
+ MMIMacho.getGVStubEntry(NLPSym);
+ StubSym =
+ MachineModuleInfoImpl::StubValueTy(getSymbol(Personality), true);
}
}
}
// Output stubs for dynamically-linked functions.
Stubs = MMIMacho.GetGVStubList();
-
+
// Output macho stubs for external and common global variables.
if (!Stubs.empty()) {
// Switch with ".non_lazy_symbol_pointer" directive.
OutStreamer->SwitchSection(TLOFMacho.getNonLazySymbolPointerSection());
EmitAlignment(isPPC64 ? 3 : 2);
-
+
for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
// L_foo$stub:
OutStreamer->EmitLabel(Stubs[i].first);
if (!Stubs.empty()) {
OutStreamer->SwitchSection(getObjFileLowering().getDataSection());
EmitAlignment(isPPC64 ? 3 : 2);
-
+
for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
// L_foo$stub:
OutStreamer->EmitLabel(Stubs[i].first);
static AsmPrinter *
createPPCAsmPrinterPass(TargetMachine &tm,
std::unique_ptr<MCStreamer> &&Streamer) {
- if (Triple(tm.getTargetTriple()).isMacOSX())
+ if (tm.getTargetTriple().isMacOSX())
return new PPCDarwinAsmPrinter(tm, std::move(Streamer));
return new PPCLinuxAsmPrinter(tm, std::move(Streamer));
}
// Force static initialization.
-extern "C" void LLVMInitializePowerPCAsmPrinter() {
+extern "C" void LLVMInitializePowerPCAsmPrinter() {
TargetRegistry::RegisterAsmPrinter(ThePPC32Target, createPPCAsmPrinterPass);
TargetRegistry::RegisterAsmPrinter(ThePPC64Target, createPPCAsmPrinterPass);
TargetRegistry::RegisterAsmPrinter(ThePPC64LETarget, createPPCAsmPrinterPass);
projects / oota-llvm.git / blobdiff