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//===-- AArch64MCTargetDesc.cpp - AArch64 Target Descriptions ---*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file provides AArch64 specific target descriptions.
//
//===----------------------------------------------------------------------===//
#include "AArch64MCTargetDesc.h"
#include "AArch64ELFStreamer.h"
#include "AArch64MCAsmInfo.h"
#include "InstPrinter/AArch64InstPrinter.h"
#include "llvm/MC/MCCodeGenInfo.h"
#include "llvm/MC/MCInstrInfo.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/TargetRegistry.h"
using namespace llvm;
#define GET_INSTRINFO_MC_DESC
#include "AArch64GenInstrInfo.inc"
#define GET_SUBTARGETINFO_MC_DESC
#include "AArch64GenSubtargetInfo.inc"
#define GET_REGINFO_MC_DESC
#include "AArch64GenRegisterInfo.inc"
static MCInstrInfo *createAArch64MCInstrInfo() {
MCInstrInfo *X = new MCInstrInfo();
InitAArch64MCInstrInfo(X);
return X;
}
static MCSubtargetInfo *
createAArch64MCSubtargetInfo(StringRef TT, StringRef CPU, StringRef FS) {
MCSubtargetInfo *X = new MCSubtargetInfo();
if (CPU.empty())
CPU = "generic";
InitAArch64MCSubtargetInfo(X, TT, CPU, FS);
return X;
}
static MCRegisterInfo *createAArch64MCRegisterInfo(StringRef Triple) {
MCRegisterInfo *X = new MCRegisterInfo();
InitAArch64MCRegisterInfo(X, AArch64::LR);
return X;
}
static MCAsmInfo *createAArch64MCAsmInfo(const MCRegisterInfo &MRI,
StringRef TT) {
Triple TheTriple(TT);
MCAsmInfo *MAI;
if (TheTriple.isOSDarwin())
MAI = new AArch64MCAsmInfoDarwin();
else {
assert(TheTriple.isOSBinFormatELF() && "Only expect Darwin or ELF");
MAI = new AArch64MCAsmInfoELF(TT);
}
// Initial state of the frame pointer is SP.
unsigned Reg = MRI.getDwarfRegNum(AArch64::SP, true);
MCCFIInstruction Inst = MCCFIInstruction::createDefCfa(nullptr, Reg, 0);
MAI->addInitialFrameState(Inst);
return MAI;
}
static MCCodeGenInfo *createAArch64MCCodeGenInfo(StringRef TT, Reloc::Model RM,
CodeModel::Model CM,
CodeGenOpt::Level OL) {
Triple TheTriple(TT);
assert((TheTriple.isOSBinFormatELF() || TheTriple.isOSBinFormatMachO()) &&
"Only expect Darwin and ELF targets");
if (CM == CodeModel::Default)
CM = CodeModel::Small;
// The default MCJIT memory managers make no guarantees about where they can
// find an executable page; JITed code needs to be able to refer to globals
// no matter how far away they are.
else if (CM == CodeModel::JITDefault)
CM = CodeModel::Large;
else if (CM != CodeModel::Small && CM != CodeModel::Large)
report_fatal_error(
"Only small and large code models are allowed on AArch64");
// AArch64 Darwin is always PIC.
if (TheTriple.isOSDarwin())
RM = Reloc::PIC_;
// On ELF platforms the default static relocation model has a smart enough
// linker to cope with referencing external symbols defined in a shared
// library. Hence DynamicNoPIC doesn't need to be promoted to PIC.
else if (RM == Reloc::Default || RM == Reloc::DynamicNoPIC)
RM = Reloc::Static;
MCCodeGenInfo *X = new MCCodeGenInfo();
X->InitMCCodeGenInfo(RM, CM, OL);
return X;
}
static MCInstPrinter *createAArch64MCInstPrinter(const Triple &T,
unsigned SyntaxVariant,
const MCAsmInfo &MAI,
const MCInstrInfo &MII,
const MCRegisterInfo &MRI) {
if (SyntaxVariant == 0)
return new AArch64InstPrinter(MAI, MII, MRI);
if (SyntaxVariant == 1)
return new AArch64AppleInstPrinter(MAI, MII, MRI);
return nullptr;
}
static MCStreamer *createELFStreamer(const Triple &T, MCContext &Ctx,
MCAsmBackend &TAB, raw_pwrite_stream &OS,
MCCodeEmitter *Emitter, bool RelaxAll) {
return createAArch64ELFStreamer(Ctx, TAB, OS, Emitter, RelaxAll);
}
static MCStreamer *createMachOStreamer(MCContext &Ctx, MCAsmBackend &TAB,
raw_pwrite_stream &OS,
MCCodeEmitter *Emitter, bool RelaxAll,
bool DWARFMustBeAtTheEnd) {
return createMachOStreamer(Ctx, TAB, OS, Emitter, RelaxAll,
DWARFMustBeAtTheEnd,
/*LabelSections*/ true);
}
// Force static initialization.
extern "C" void LLVMInitializeAArch64TargetMC() {
for (Target *T :
{&TheAArch64leTarget, &TheAArch64beTarget, &TheARM64Target}) {
// Register the MC asm info.
RegisterMCAsmInfoFn X(*T, createAArch64MCAsmInfo);
// Register the MC codegen info.
TargetRegistry::RegisterMCCodeGenInfo(*T, createAArch64MCCodeGenInfo);
// Register the MC instruction info.
TargetRegistry::RegisterMCInstrInfo(*T, createAArch64MCInstrInfo);
// Register the MC register info.
TargetRegistry::RegisterMCRegInfo(*T, createAArch64MCRegisterInfo);
// Register the MC subtarget info.
TargetRegistry::RegisterMCSubtargetInfo(*T, createAArch64MCSubtargetInfo);
// Register the MC Code Emitter
TargetRegistry::RegisterMCCodeEmitter(*T, createAArch64MCCodeEmitter);
// Register the obj streamers.
TargetRegistry::RegisterELFStreamer(*T, createELFStreamer);
TargetRegistry::RegisterMachOStreamer(*T, createMachOStreamer);
// Register the obj target streamer.
TargetRegistry::RegisterObjectTargetStreamer(
*T, createAArch64ObjectTargetStreamer);
// Register the asm streamer.
TargetRegistry::RegisterAsmTargetStreamer(*T,
createAArch64AsmTargetStreamer);
// Register the MCInstPrinter.
TargetRegistry::RegisterMCInstPrinter(*T, createAArch64MCInstPrinter);
}
// Register the asm backend.
for (Target *T : {&TheAArch64leTarget, &TheARM64Target})
TargetRegistry::RegisterMCAsmBackend(*T, createAArch64leAsmBackend);
TargetRegistry::RegisterMCAsmBackend(TheAArch64beTarget,
createAArch64beAsmBackend);
}
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