148 lines
5.1 KiB
C++
148 lines
5.1 KiB
C++
//===-- Mos6502MCTargetDesc.cpp - Mos6502 Target Descriptions -----------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file provides Mos6502 specific target descriptions.
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//
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//===----------------------------------------------------------------------===//
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#include "Mos6502MCTargetDesc.h"
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#include "InstPrinter/Mos6502InstPrinter.h"
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#include "Mos6502MCAsmInfo.h"
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#include "Mos6502TargetStreamer.h"
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#include "llvm/MC/MCCodeGenInfo.h"
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#include "llvm/MC/MCInstrInfo.h"
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#include "llvm/MC/MCRegisterInfo.h"
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#include "llvm/MC/MCSubtargetInfo.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/TargetRegistry.h"
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using namespace llvm;
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#define GET_INSTRINFO_MC_DESC
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#include "Mos6502GenInstrInfo.inc"
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#define GET_SUBTARGETINFO_MC_DESC
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#include "Mos6502GenSubtargetInfo.inc"
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#define GET_REGINFO_MC_DESC
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#include "Mos6502GenRegisterInfo.inc"
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static MCAsmInfo *createMos6502MCAsmInfo(const MCRegisterInfo &MRI,
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const Triple &TT) {
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MCAsmInfo *MAI = new Mos6502ELFMCAsmInfo(TT);
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unsigned Reg = MRI.getDwarfRegNum(SP::O6, true);
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MCCFIInstruction Inst = MCCFIInstruction::createDefCfa(nullptr, Reg, 0);
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MAI->addInitialFrameState(Inst);
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return MAI;
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}
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static MCInstrInfo *createMos6502MCInstrInfo() {
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MCInstrInfo *X = new MCInstrInfo();
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InitMos6502MCInstrInfo(X);
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return X;
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}
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static MCRegisterInfo *createMos6502MCRegisterInfo(const Triple &TT) {
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MCRegisterInfo *X = new MCRegisterInfo();
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InitMos6502MCRegisterInfo(X, SP::O7);
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return X;
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}
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static MCSubtargetInfo *
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createMos6502MCSubtargetInfo(const Triple &TT, StringRef CPU, StringRef FS) {
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if (CPU.empty())
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CPU = "v8";
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return createMos6502MCSubtargetInfoImpl(TT, CPU, FS);
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}
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// Code models. Some only make sense for 64-bit code.
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//
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// SunCC Reloc CodeModel Constraints
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// abs32 Static Small text+data+bss linked below 2^32 bytes
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// abs44 Static Medium text+data+bss linked below 2^44 bytes
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// abs64 Static Large text smaller than 2^31 bytes
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// pic13 PIC_ Small GOT < 2^13 bytes
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// pic32 PIC_ Medium GOT < 2^32 bytes
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//
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// All code models require that the text segment is smaller than 2GB.
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static MCCodeGenInfo *createMos6502MCCodeGenInfo(const Triple &TT,
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Reloc::Model RM,
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CodeModel::Model CM,
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CodeGenOpt::Level OL) {
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MCCodeGenInfo *X = new MCCodeGenInfo();
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// The default 32-bit code model is abs32/pic32 and the default 32-bit
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// code model for JIT is abs32.
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switch (CM) {
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default: break;
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case CodeModel::Default:
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case CodeModel::JITDefault: CM = CodeModel::Small; break;
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}
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X->initMCCodeGenInfo(RM, CM, OL);
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return X;
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}
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static MCTargetStreamer *
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createObjectTargetStreamer(MCStreamer &S, const MCSubtargetInfo &STI) {
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return new Mos6502TargetELFStreamer(S);
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}
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static MCTargetStreamer *createTargetAsmStreamer(MCStreamer &S,
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formatted_raw_ostream &OS,
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MCInstPrinter *InstPrint,
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bool isVerboseAsm) {
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return new Mos6502TargetAsmStreamer(S, OS);
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}
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static MCInstPrinter *createMos6502MCInstPrinter(const Triple &T,
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unsigned SyntaxVariant,
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const MCAsmInfo &MAI,
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const MCInstrInfo &MII,
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const MCRegisterInfo &MRI) {
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return new Mos6502InstPrinter(MAI, MII, MRI);
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}
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extern "C" void LLVMInitializeMos6502TargetMC() {
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// Register the MC asm info.
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RegisterMCAsmInfoFn Z(TheMos6502Target, createMos6502MCAsmInfo);
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for (Target *T : {&TheMos6502Target}) {
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// Register the MC instruction info.
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TargetRegistry::RegisterMCInstrInfo(*T, createMos6502MCInstrInfo);
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// Register the MC register info.
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TargetRegistry::RegisterMCRegInfo(*T, createMos6502MCRegisterInfo);
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// Register the MC subtarget info.
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TargetRegistry::RegisterMCSubtargetInfo(*T, createMos6502MCSubtargetInfo);
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// Register the MC Code Emitter.
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TargetRegistry::RegisterMCCodeEmitter(*T, createMos6502MCCodeEmitter);
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// Register the asm backend.
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TargetRegistry::RegisterMCAsmBackend(*T, createMos6502AsmBackend);
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// Register the object target streamer.
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TargetRegistry::RegisterObjectTargetStreamer(*T,
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createObjectTargetStreamer);
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// Register the asm streamer.
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TargetRegistry::RegisterAsmTargetStreamer(*T, createTargetAsmStreamer);
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// Register the MCInstPrinter
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TargetRegistry::RegisterMCInstPrinter(*T, createMos6502MCInstPrinter);
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}
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// Register the MC codegen info.
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TargetRegistry::RegisterMCCodeGenInfo(TheMos6502Target,
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createMos6502MCCodeGenInfo);
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}
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