133 lines · cpp
1//===-- WebAssemblyMCTargetDesc.cpp - WebAssembly Target Descriptions -----===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8///9/// \file10/// This file provides WebAssembly-specific target descriptions.11///12//===----------------------------------------------------------------------===//13 14#include "MCTargetDesc/WebAssemblyMCTargetDesc.h"15#include "MCTargetDesc/WebAssemblyInstPrinter.h"16#include "MCTargetDesc/WebAssemblyMCAsmInfo.h"17#include "MCTargetDesc/WebAssemblyTargetStreamer.h"18#include "TargetInfo/WebAssemblyTargetInfo.h"19#include "llvm/MC/MCInstrInfo.h"20#include "llvm/MC/MCRegisterInfo.h"21#include "llvm/MC/MCSubtargetInfo.h"22#include "llvm/MC/TargetRegistry.h"23#include "llvm/Support/Compiler.h"24#include "llvm/Support/ErrorHandling.h"25using namespace llvm;26 27#define DEBUG_TYPE "wasm-mc-target-desc"28 29#define GET_INSTRINFO_MC_DESC30#define ENABLE_INSTR_PREDICATE_VERIFIER31#include "WebAssemblyGenInstrInfo.inc"32 33#define GET_SUBTARGETINFO_MC_DESC34#include "WebAssemblyGenSubtargetInfo.inc"35 36#define GET_REGINFO_MC_DESC37#include "WebAssemblyGenRegisterInfo.inc"38 39static MCAsmInfo *createMCAsmInfo(const MCRegisterInfo & /*MRI*/,40 const Triple &TT,41 const MCTargetOptions &Options) {42 return new WebAssemblyMCAsmInfo(TT, Options);43}44 45static MCInstrInfo *createMCInstrInfo() {46 auto *X = new MCInstrInfo();47 InitWebAssemblyMCInstrInfo(X);48 return X;49}50 51static MCRegisterInfo *createMCRegisterInfo(const Triple & /*T*/) {52 auto *X = new MCRegisterInfo();53 InitWebAssemblyMCRegisterInfo(X, 0);54 return X;55}56 57static MCInstPrinter *createMCInstPrinter(const Triple & /*T*/,58 unsigned SyntaxVariant,59 const MCAsmInfo &MAI,60 const MCInstrInfo &MII,61 const MCRegisterInfo &MRI) {62 assert(SyntaxVariant == 0 && "WebAssembly only has one syntax variant");63 return new WebAssemblyInstPrinter(MAI, MII, MRI);64}65 66static MCCodeEmitter *createCodeEmitter(const MCInstrInfo &MCII,67 MCContext &Ctx) {68 return createWebAssemblyMCCodeEmitter(MCII, Ctx);69}70 71static MCAsmBackend *createAsmBackend(const Target & /*T*/,72 const MCSubtargetInfo &STI,73 const MCRegisterInfo & /*MRI*/,74 const MCTargetOptions & /*Options*/) {75 return createWebAssemblyAsmBackend(STI.getTargetTriple());76}77 78static MCSubtargetInfo *createMCSubtargetInfo(const Triple &TT, StringRef CPU,79 StringRef FS) {80 return createWebAssemblyMCSubtargetInfoImpl(TT, CPU, /*TuneCPU*/ CPU, FS);81}82 83static MCTargetStreamer *84createObjectTargetStreamer(MCStreamer &S, const MCSubtargetInfo &STI) {85 return new WebAssemblyTargetWasmStreamer(S);86}87 88static MCTargetStreamer *89createAsmTargetStreamer(MCStreamer &S, formatted_raw_ostream &OS,90 MCInstPrinter * /*InstPrint*/) {91 return new WebAssemblyTargetAsmStreamer(S, OS);92}93 94static MCTargetStreamer *createNullTargetStreamer(MCStreamer &S) {95 return new WebAssemblyTargetNullStreamer(S);96}97 98// Force static initialization.99extern "C" LLVM_ABI LLVM_EXTERNAL_VISIBILITY void100LLVMInitializeWebAssemblyTargetMC() {101 for (Target *T :102 {&getTheWebAssemblyTarget32(), &getTheWebAssemblyTarget64()}) {103 // Register the MC asm info.104 RegisterMCAsmInfoFn X(*T, createMCAsmInfo);105 106 // Register the MC instruction info.107 TargetRegistry::RegisterMCInstrInfo(*T, createMCInstrInfo);108 109 // Register the MC register info.110 TargetRegistry::RegisterMCRegInfo(*T, createMCRegisterInfo);111 112 // Register the MCInstPrinter.113 TargetRegistry::RegisterMCInstPrinter(*T, createMCInstPrinter);114 115 // Register the MC code emitter.116 TargetRegistry::RegisterMCCodeEmitter(*T, createCodeEmitter);117 118 // Register the ASM Backend.119 TargetRegistry::RegisterMCAsmBackend(*T, createAsmBackend);120 121 // Register the MC subtarget info.122 TargetRegistry::RegisterMCSubtargetInfo(*T, createMCSubtargetInfo);123 124 // Register the object target streamer.125 TargetRegistry::RegisterObjectTargetStreamer(*T,126 createObjectTargetStreamer);127 // Register the asm target streamer.128 TargetRegistry::RegisterAsmTargetStreamer(*T, createAsmTargetStreamer);129 // Register the null target streamer.130 TargetRegistry::RegisterNullTargetStreamer(*T, createNullTargetStreamer);131 }132}133