#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 vtable to this file
+// 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 PPCLinuxMCAsmInfo(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;
formatted_raw_ostream &OS;
public:
- PPCTargetAsmStreamer(formatted_raw_ostream &OS) : OS(OS) {}
- virtual void emitTCEntry(const MCSymbol &S) {
+ 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';
+ }
+ virtual void emitAbiVersion(int AbiVersion) override {
+ OS << "\t.abiversion " << AbiVersion << '\n';
+ }
+ virtual void emitLocalEntry(MCSymbol *S, const MCExpr *LocalOffset) {
+ OS << "\t.localentry\t" << *S << ", " << *LocalOffset << '\n';
+ }
};
class PPCTargetELFStreamer : public PPCTargetStreamer {
- virtual void emitTCEntry(const MCSymbol &S) {
+public:
+ PPCTargetELFStreamer(MCStreamer &S) : PPCTargetStreamer(S) {}
+ MCELFStreamer &getStreamer() {
+ return static_cast<MCELFStreamer &>(Streamer);
+ }
+ virtual void emitTCEntry(const MCSymbol &S) override {
// Creates a R_PPC64_TOC relocation
- Streamer->EmitSymbolValue(&S, 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?
+ }
+ virtual 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);
+ }
+ virtual void emitLocalEntry(MCSymbol *S, const MCExpr *LocalOffset) {
+ 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);
+ }
+};
+
+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.
+ }
+ virtual void emitAbiVersion(int AbiVersion) override {
+ llvm_unreachable("Unknown pseudo-op: .abiversion");
+ }
+ virtual void emitLocalEntry(MCSymbol *S, const MCExpr *LocalOffset) {
+ llvm_unreachable("Unknown pseudo-op: .localentry");
}
};
}
MCContext &Ctx, MCAsmBackend &MAB,
raw_ostream &OS,
MCCodeEmitter *Emitter,
+ const MCSubtargetInfo &STI,
bool RelaxAll,
bool NoExecStack) {
- if (Triple(TT).isOSDarwin())
- return createMachOStreamer(Ctx, MAB, OS, Emitter, RelaxAll);
+ if (Triple(TT).isOSDarwin()) {
+ MCStreamer *S = createMachOStreamer(Ctx, MAB, OS, Emitter, RelaxAll);
+ new PPCTargetMachOStreamer(*S);
+ return S;
+ }
- PPCTargetStreamer *S = new PPCTargetELFStreamer();
- return createELFStreamer(Ctx, S, MAB, OS, Emitter, RelaxAll, NoExecStack);
+ MCStreamer *S =
+ createELFStreamer(Ctx, MAB, OS, Emitter, RelaxAll, NoExecStack);
+ new PPCTargetELFStreamer(*S);
+ return S;
}
static MCStreamer *
createMCAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS,
- bool isVerboseAsm, bool useLoc, bool useCFI,
- bool useDwarfDirectory, MCInstPrinter *InstPrint,
- MCCodeEmitter *CE, MCAsmBackend *TAB, bool ShowInst) {
- PPCTargetStreamer *S = new PPCTargetAsmStreamer(OS);
-
- return llvm::createAsmStreamer(Ctx, S, OS, isVerboseAsm, useLoc, useCFI,
- useDwarfDirectory, InstPrint, CE, TAB,
- ShowInst);
+ bool isVerboseAsm, bool useDwarfDirectory,
+ MCInstPrinter *InstPrint, MCCodeEmitter *CE,
+ MCAsmBackend *TAB, bool ShowInst) {
+
+ MCStreamer *S = llvm::createAsmStreamer(
+ Ctx, OS, isVerboseAsm, useDwarfDirectory, InstPrint, CE, TAB, ShowInst);
+ new PPCTargetAsmStreamer(*S, OS);
+ return S;
}
static MCInstPrinter *createPPCMCInstPrinter(const Target &T,
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