mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-21 16:31:16 +00:00
3af13568fb
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216823 91177308-0d34-0410-b5e6-96231b3b80d8
308 lines
11 KiB
C++
308 lines
11 KiB
C++
//===-- PPCMCTargetDesc.cpp - PowerPC Target Descriptions -----------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file provides PowerPC specific target descriptions.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#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_SUBTARGETINFO_MC_DESC
|
|
#include "PPCGenSubtargetInfo.inc"
|
|
|
|
#define GET_REGINFO_MC_DESC
|
|
#include "PPCGenRegisterInfo.inc"
|
|
|
|
// Pin the vtable to this file.
|
|
PPCTargetStreamer::~PPCTargetStreamer() {}
|
|
PPCTargetStreamer::PPCTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
|
|
|
|
static MCInstrInfo *createPPCMCInstrInfo() {
|
|
MCInstrInfo *X = new MCInstrInfo();
|
|
InitPPCMCInstrInfo(X);
|
|
return X;
|
|
}
|
|
|
|
static MCRegisterInfo *createPPCMCRegisterInfo(StringRef TT) {
|
|
Triple TheTriple(TT);
|
|
bool isPPC64 = (TheTriple.getArch() == Triple::ppc64 ||
|
|
TheTriple.getArch() == Triple::ppc64le);
|
|
unsigned Flavour = isPPC64 ? 0 : 1;
|
|
unsigned RA = isPPC64 ? PPC::LR8 : PPC::LR;
|
|
|
|
MCRegisterInfo *X = new MCRegisterInfo();
|
|
InitPPCMCRegisterInfo(X, RA, Flavour, Flavour);
|
|
return X;
|
|
}
|
|
|
|
static MCSubtargetInfo *createPPCMCSubtargetInfo(StringRef TT, StringRef CPU,
|
|
StringRef FS) {
|
|
MCSubtargetInfo *X = new MCSubtargetInfo();
|
|
InitPPCMCSubtargetInfo(X, TT, CPU, FS);
|
|
return X;
|
|
}
|
|
|
|
static MCAsmInfo *createPPCMCAsmInfo(const MCRegisterInfo &MRI, StringRef TT) {
|
|
Triple TheTriple(TT);
|
|
bool isPPC64 = (TheTriple.getArch() == Triple::ppc64 ||
|
|
TheTriple.getArch() == Triple::ppc64le);
|
|
|
|
MCAsmInfo *MAI;
|
|
if (TheTriple.isOSDarwin())
|
|
MAI = new PPCMCAsmInfoDarwin(isPPC64, TheTriple);
|
|
else
|
|
MAI = new PPCELFMCAsmInfo(isPPC64, TheTriple);
|
|
|
|
// Initial state of the frame pointer is R1.
|
|
unsigned Reg = isPPC64 ? PPC::X1 : PPC::R1;
|
|
MCCFIInstruction Inst =
|
|
MCCFIInstruction::createDefCfa(nullptr, MRI.getDwarfRegNum(Reg, true), 0);
|
|
MAI->addInitialFrameState(Inst);
|
|
|
|
return MAI;
|
|
}
|
|
|
|
static MCCodeGenInfo *createPPCMCCodeGenInfo(StringRef TT, Reloc::Model RM,
|
|
CodeModel::Model CM,
|
|
CodeGenOpt::Level OL) {
|
|
MCCodeGenInfo *X = new MCCodeGenInfo();
|
|
|
|
if (RM == Reloc::Default) {
|
|
Triple T(TT);
|
|
if (T.isOSDarwin())
|
|
RM = Reloc::DynamicNoPIC;
|
|
else
|
|
RM = Reloc::Static;
|
|
}
|
|
if (CM == CodeModel::Default) {
|
|
Triple T(TT);
|
|
if (!T.isOSDarwin() &&
|
|
(T.getArch() == Triple::ppc64 || T.getArch() == Triple::ppc64le))
|
|
CM = CodeModel::Medium;
|
|
}
|
|
X->InitMCCodeGenInfo(RM, CM, OL);
|
|
return X;
|
|
}
|
|
|
|
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.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);
|
|
}
|
|
};
|
|
|
|
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");
|
|
}
|
|
};
|
|
}
|
|
|
|
// This is duplicated code. Refactor this.
|
|
static MCStreamer *createMCStreamer(const Target &T, StringRef TT,
|
|
MCContext &Ctx, MCAsmBackend &MAB,
|
|
raw_ostream &OS,
|
|
MCCodeEmitter *Emitter,
|
|
const MCSubtargetInfo &STI,
|
|
bool RelaxAll,
|
|
bool NoExecStack) {
|
|
if (Triple(TT).isOSDarwin()) {
|
|
MCStreamer *S = createMachOStreamer(Ctx, MAB, OS, Emitter, RelaxAll);
|
|
new PPCTargetMachOStreamer(*S);
|
|
return S;
|
|
}
|
|
|
|
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 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,
|
|
unsigned SyntaxVariant,
|
|
const MCAsmInfo &MAI,
|
|
const MCInstrInfo &MII,
|
|
const MCRegisterInfo &MRI,
|
|
const MCSubtargetInfo &STI) {
|
|
bool isDarwin = Triple(STI.getTargetTriple()).isOSDarwin();
|
|
return new PPCInstPrinter(MAI, MII, MRI, isDarwin);
|
|
}
|
|
|
|
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);
|
|
|
|
// 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 asm streamer.
|
|
TargetRegistry::RegisterAsmStreamer(ThePPC32Target, createMCAsmStreamer);
|
|
TargetRegistry::RegisterAsmStreamer(ThePPC64Target, createMCAsmStreamer);
|
|
TargetRegistry::RegisterAsmStreamer(ThePPC64LETarget, createMCAsmStreamer);
|
|
|
|
// Register the MCInstPrinter.
|
|
TargetRegistry::RegisterMCInstPrinter(ThePPC32Target, createPPCMCInstPrinter);
|
|
TargetRegistry::RegisterMCInstPrinter(ThePPC64Target, createPPCMCInstPrinter);
|
|
TargetRegistry::RegisterMCInstPrinter(ThePPC64LETarget,
|
|
createPPCMCInstPrinter);
|
|
}
|