#include "PPCMCTargetDesc.h"
#include "InstPrinter/PPCInstPrinter.h"
#include "PPCMCAsmInfo.h"
+#include "PPCTargetStreamer.h"
#include "llvm/MC/MCCodeGenInfo.h"
+#include "llvm/MC/MCELF.h"
+#include "llvm/MC/MCELFStreamer.h"
+#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInstrInfo.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSubtargetInfo.h"
+#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MachineLocation.h"
+#include "llvm/Support/ELF.h"
#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/FormattedStream.h"
#include "llvm/Support/TargetRegistry.h"
+using namespace llvm;
+
#define GET_INSTRINFO_MC_DESC
#include "PPCGenInstrInfo.inc"
#define GET_REGINFO_MC_DESC
#include "PPCGenRegisterInfo.inc"
-using namespace llvm;
+// Pin the vtable to this file.
+PPCTargetStreamer::~PPCTargetStreamer() {}
+PPCTargetStreamer::PPCTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
static MCInstrInfo *createPPCMCInstrInfo() {
MCInstrInfo *X = new MCInstrInfo();
MCAsmInfo *MAI;
if (TheTriple.isOSDarwin())
- MAI = new PPCMCAsmInfoDarwin(isPPC64);
+ MAI = new PPCMCAsmInfoDarwin(isPPC64, TheTriple);
else
- MAI = new PPCLinuxMCAsmInfo(isPPC64);
+ MAI = new PPCELFMCAsmInfo(isPPC64, TheTriple);
// Initial state of the frame pointer is R1.
unsigned Reg = isPPC64 ? PPC::X1 : PPC::R1;
MCCFIInstruction Inst =
- MCCFIInstruction::createDefCfa(0, MRI.getDwarfRegNum(Reg, true), 0);
+ MCCFIInstruction::createDefCfa(nullptr, MRI.getDwarfRegNum(Reg, true), 0);
MAI->addInitialFrameState(Inst);
return MAI;
return X;
}
-// This is duplicated code. Refactor this.
-static MCStreamer *createMCStreamer(const Target &T, StringRef TT,
- MCContext &Ctx, MCAsmBackend &MAB,
- raw_ostream &OS,
- MCCodeEmitter *Emitter,
- bool RelaxAll,
- bool NoExecStack) {
- if (Triple(TT).isOSDarwin())
- return createMachOStreamer(Ctx, MAB, OS, Emitter, RelaxAll);
-
- return createELFStreamer(Ctx, MAB, OS, Emitter, RelaxAll, NoExecStack);
+namespace {
+class PPCTargetAsmStreamer : public PPCTargetStreamer {
+ formatted_raw_ostream &OS;
+
+public:
+ PPCTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS)
+ : PPCTargetStreamer(S), OS(OS) {}
+ void emitTCEntry(const MCSymbol &S) override {
+ OS << "\t.tc ";
+ OS << S.getName();
+ OS << "[TC],";
+ OS << S.getName();
+ OS << '\n';
+ }
+ void emitMachine(StringRef CPU) override {
+ OS << "\t.machine " << CPU << '\n';
+ }
+ void emitAbiVersion(int AbiVersion) override {
+ OS << "\t.abiversion " << AbiVersion << '\n';
+ }
+ void emitLocalEntry(MCSymbol *S, const MCExpr *LocalOffset) override {
+ OS << "\t.localentry\t" << *S << ", " << *LocalOffset << '\n';
+ }
+};
+
+class PPCTargetELFStreamer : public PPCTargetStreamer {
+public:
+ PPCTargetELFStreamer(MCStreamer &S) : PPCTargetStreamer(S) {}
+ MCELFStreamer &getStreamer() {
+ return static_cast<MCELFStreamer &>(Streamer);
+ }
+ void emitTCEntry(const MCSymbol &S) override {
+ // Creates a R_PPC64_TOC relocation
+ Streamer.EmitValueToAlignment(8);
+ Streamer.EmitSymbolValue(&S, 8);
+ }
+ void emitMachine(StringRef CPU) override {
+ // FIXME: Is there anything to do in here or does this directive only
+ // limit the parser?
+ }
+ void emitAbiVersion(int AbiVersion) override {
+ MCAssembler &MCA = getStreamer().getAssembler();
+ unsigned Flags = MCA.getELFHeaderEFlags();
+ Flags &= ~ELF::EF_PPC64_ABI;
+ Flags |= (AbiVersion & ELF::EF_PPC64_ABI);
+ MCA.setELFHeaderEFlags(Flags);
+ }
+ void emitLocalEntry(MCSymbol *S, const MCExpr *LocalOffset) override {
+ MCAssembler &MCA = getStreamer().getAssembler();
+ MCSymbolData &Data = getStreamer().getOrCreateSymbolData(S);
+
+ int64_t Res;
+ if (!LocalOffset->EvaluateAsAbsolute(Res, MCA))
+ report_fatal_error(".localentry expression must be absolute.");
+
+ unsigned Encoded = ELF::encodePPC64LocalEntryOffset(Res);
+ if (Res != ELF::decodePPC64LocalEntryOffset(Encoded))
+ report_fatal_error(".localentry expression cannot be encoded.");
+
+ // The "other" values are stored in the last 6 bits of the second byte.
+ // The traditional defines for STO values assume the full byte and thus
+ // the shift to pack it.
+ unsigned Other = MCELF::getOther(Data) << 2;
+ Other &= ~ELF::STO_PPC64_LOCAL_MASK;
+ Other |= Encoded;
+ MCELF::setOther(Data, Other >> 2);
+
+ // For GAS compatibility, unless we already saw a .abiversion directive,
+ // set e_flags to indicate ELFv2 ABI.
+ unsigned Flags = MCA.getELFHeaderEFlags();
+ if ((Flags & ELF::EF_PPC64_ABI) == 0)
+ MCA.setELFHeaderEFlags(Flags | 2);
+ }
+ void emitAssignment(MCSymbol *Symbol, const MCExpr *Value) override {
+ // When encoding an assignment to set symbol A to symbol B, also copy
+ // the st_other bits encoding the local entry point offset.
+ if (Value->getKind() != MCExpr::SymbolRef)
+ return;
+ const MCSymbol &RhsSym =
+ static_cast<const MCSymbolRefExpr *>(Value)->getSymbol();
+ MCSymbolData &Data = getStreamer().getOrCreateSymbolData(&RhsSym);
+ MCSymbolData &SymbolData = getStreamer().getOrCreateSymbolData(Symbol);
+ // The "other" values are stored in the last 6 bits of the second byte.
+ // The traditional defines for STO values assume the full byte and thus
+ // the shift to pack it.
+ unsigned Other = MCELF::getOther(SymbolData) << 2;
+ Other &= ~ELF::STO_PPC64_LOCAL_MASK;
+ Other |= (MCELF::getOther(Data) << 2) & ELF::STO_PPC64_LOCAL_MASK;
+ MCELF::setOther(SymbolData, Other >> 2);
+ }
+};
+
+class PPCTargetMachOStreamer : public PPCTargetStreamer {
+public:
+ PPCTargetMachOStreamer(MCStreamer &S) : PPCTargetStreamer(S) {}
+ void emitTCEntry(const MCSymbol &S) override {
+ llvm_unreachable("Unknown pseudo-op: .tc");
+ }
+ void emitMachine(StringRef CPU) override {
+ // FIXME: We should update the CPUType, CPUSubType in the Object file if
+ // the new values are different from the defaults.
+ }
+ void emitAbiVersion(int AbiVersion) override {
+ llvm_unreachable("Unknown pseudo-op: .abiversion");
+ }
+ void emitLocalEntry(MCSymbol *S, const MCExpr *LocalOffset) override {
+ llvm_unreachable("Unknown pseudo-op: .localentry");
+ }
+};
+}
+
+static MCTargetStreamer *createAsmTargetStreamer(MCStreamer &S,
+ formatted_raw_ostream &OS,
+ MCInstPrinter *InstPrint,
+ bool isVerboseAsm) {
+ return new PPCTargetAsmStreamer(S, OS);
+}
+
+static MCTargetStreamer *
+createObjectTargetStreamer(MCStreamer &S, const MCSubtargetInfo &STI) {
+ Triple TT(STI.getTargetTriple());
+ if (TT.getObjectFormat() == Triple::ELF)
+ return new PPCTargetELFStreamer(S);
+ return new PPCTargetMachOStreamer(S);
}
static MCInstPrinter *createPPCMCInstPrinter(const Target &T,
}
extern "C" void LLVMInitializePowerPCTargetMC() {
- // Register the MC asm info.
- RegisterMCAsmInfoFn C(ThePPC32Target, createPPCMCAsmInfo);
- RegisterMCAsmInfoFn D(ThePPC64Target, createPPCMCAsmInfo);
- RegisterMCAsmInfoFn E(ThePPC64LETarget, createPPCMCAsmInfo);
-
- // Register the MC codegen info.
- TargetRegistry::RegisterMCCodeGenInfo(ThePPC32Target, createPPCMCCodeGenInfo);
- TargetRegistry::RegisterMCCodeGenInfo(ThePPC64Target, createPPCMCCodeGenInfo);
- TargetRegistry::RegisterMCCodeGenInfo(ThePPC64LETarget,
- createPPCMCCodeGenInfo);
-
- // Register the MC instruction info.
- TargetRegistry::RegisterMCInstrInfo(ThePPC32Target, createPPCMCInstrInfo);
- TargetRegistry::RegisterMCInstrInfo(ThePPC64Target, createPPCMCInstrInfo);
- TargetRegistry::RegisterMCInstrInfo(ThePPC64LETarget,
- createPPCMCInstrInfo);
-
- // Register the MC register info.
- TargetRegistry::RegisterMCRegInfo(ThePPC32Target, createPPCMCRegisterInfo);
- TargetRegistry::RegisterMCRegInfo(ThePPC64Target, createPPCMCRegisterInfo);
- TargetRegistry::RegisterMCRegInfo(ThePPC64LETarget, createPPCMCRegisterInfo);
-
- // Register the MC subtarget info.
- TargetRegistry::RegisterMCSubtargetInfo(ThePPC32Target,
- createPPCMCSubtargetInfo);
- TargetRegistry::RegisterMCSubtargetInfo(ThePPC64Target,
- createPPCMCSubtargetInfo);
- TargetRegistry::RegisterMCSubtargetInfo(ThePPC64LETarget,
- createPPCMCSubtargetInfo);
-
- // Register the MC Code Emitter
- TargetRegistry::RegisterMCCodeEmitter(ThePPC32Target, createPPCMCCodeEmitter);
- TargetRegistry::RegisterMCCodeEmitter(ThePPC64Target, createPPCMCCodeEmitter);
- TargetRegistry::RegisterMCCodeEmitter(ThePPC64LETarget,
- createPPCMCCodeEmitter);
-
+ for (Target *T : {&ThePPC32Target, &ThePPC64Target, &ThePPC64LETarget}) {
+ // Register the MC asm info.
+ RegisterMCAsmInfoFn C(*T, createPPCMCAsmInfo);
+
+ // Register the MC codegen info.
+ TargetRegistry::RegisterMCCodeGenInfo(*T, createPPCMCCodeGenInfo);
+
+ // Register the MC instruction info.
+ TargetRegistry::RegisterMCInstrInfo(*T, createPPCMCInstrInfo);
+
+ // Register the MC register info.
+ TargetRegistry::RegisterMCRegInfo(*T, createPPCMCRegisterInfo);
+
+ // Register the MC subtarget info.
+ TargetRegistry::RegisterMCSubtargetInfo(*T, createPPCMCSubtargetInfo);
+
+ // Register the MC Code Emitter
+ TargetRegistry::RegisterMCCodeEmitter(*T, createPPCMCCodeEmitter);
+
// Register the asm backend.
- TargetRegistry::RegisterMCAsmBackend(ThePPC32Target, createPPCAsmBackend);
- TargetRegistry::RegisterMCAsmBackend(ThePPC64Target, createPPCAsmBackend);
- TargetRegistry::RegisterMCAsmBackend(ThePPC64LETarget, createPPCAsmBackend);
-
- // Register the object streamer.
- TargetRegistry::RegisterMCObjectStreamer(ThePPC32Target, createMCStreamer);
- TargetRegistry::RegisterMCObjectStreamer(ThePPC64Target, createMCStreamer);
- TargetRegistry::RegisterMCObjectStreamer(ThePPC64LETarget, createMCStreamer);
-
- // Register the MCInstPrinter.
- TargetRegistry::RegisterMCInstPrinter(ThePPC32Target, createPPCMCInstPrinter);
- TargetRegistry::RegisterMCInstPrinter(ThePPC64Target, createPPCMCInstPrinter);
- TargetRegistry::RegisterMCInstPrinter(ThePPC64LETarget,
- createPPCMCInstPrinter);
+ TargetRegistry::RegisterMCAsmBackend(*T, createPPCAsmBackend);
+
+ // Register the object target streamer.
+ TargetRegistry::RegisterObjectTargetStreamer(*T,
+ createObjectTargetStreamer);
+
+ // Register the asm target streamer.
+ TargetRegistry::RegisterAsmTargetStreamer(*T, createAsmTargetStreamer);
+
+ // Register the MCInstPrinter.
+ TargetRegistry::RegisterMCInstPrinter(*T, createPPCMCInstPrinter);
+ }
}
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