llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCTargetDesc.cpp

//===-- WebAssemblyMCTargetDesc.cpp - WebAssembly Target Descriptions -----===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// \brief This file provides WebAssembly-specific target descriptions.
///
//===----------------------------------------------------------------------===//

#include "WebAssemblyMCTargetDesc.h"
#include "InstPrinter/WebAssemblyInstPrinter.h"
#include "WebAssemblyMCAsmInfo.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 DEBUG_TYPE "wasm-mc-target-desc"

#define GET_INSTRINFO_MC_DESC
#include "WebAssemblyGenInstrInfo.inc"

#define GET_SUBTARGETINFO_MC_DESC
#include "WebAssemblyGenSubtargetInfo.inc"

#define GET_REGINFO_MC_DESC
#include "WebAssemblyGenRegisterInfo.inc"

static MCAsmInfo *createMCAsmInfo(const MCRegisterInfo & /*MRI*/,
                                  const Triple &TT) {
  return new WebAssemblyMCAsmInfo(TT);
}

static MCInstrInfo *createMCInstrInfo() {
  MCInstrInfo *X = new MCInstrInfo();
  InitWebAssemblyMCInstrInfo(X);
  return X;
}

static MCStreamer *createMCStreamer(const Triple & /*T*/, MCContext &Ctx,
                                    MCAsmBackend &MAB, raw_pwrite_stream &OS,
                                    MCCodeEmitter *Emitter, bool RelaxAll) {
  return createELFStreamer(Ctx, MAB, OS, Emitter, RelaxAll);
}

static MCInstPrinter *createMCInstPrinter(const Triple & /*T*/,
                                          unsigned SyntaxVariant,
                                          const MCAsmInfo &MAI,
                                          const MCInstrInfo &MII,
                                          const MCRegisterInfo &MRI) {
  assert(SyntaxVariant == 0);
  return new WebAssemblyInstPrinter(MAI, MII, MRI);
}

static MCCodeEmitter *createCodeEmitter(const MCInstrInfo &MCII,
                                        const MCRegisterInfo & /*MRI*/,
                                        MCContext &Ctx) {
  return createWebAssemblyMCCodeEmitter(MCII, Ctx);
}

static MCAsmBackend *createAsmBackend(const Target & /*T*/,
                                      const MCRegisterInfo & /*MRI*/,
                                      const Triple &TT, StringRef /*CPU*/) {
  return createWebAssemblyAsmBackend(TT);
}

// Force static initialization.
extern "C" void LLVMInitializeWebAssemblyTargetMC() {
  for (Target *T : {&TheWebAssemblyTarget32, &TheWebAssemblyTarget64}) {
    // Register the MC asm info.
    RegisterMCAsmInfoFn X(*T, createMCAsmInfo);

    // Register the MC instruction info.
    TargetRegistry::RegisterMCInstrInfo(*T, createMCInstrInfo);

    // Register the object streamer.
    TargetRegistry::RegisterELFStreamer(*T, createMCStreamer);

    // Register the MCInstPrinter.
    TargetRegistry::RegisterMCInstPrinter(*T, createMCInstPrinter);

    // Register the MC code emitter.
    TargetRegistry::RegisterMCCodeEmitter(*T, createCodeEmitter);

    // Register the ASM Backend.
    TargetRegistry::RegisterMCAsmBackend(*T, createAsmBackend);
  }
}