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      1 //===-- WebAssemblyMCTargetDesc.cpp - WebAssembly Target Descriptions -----===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is distributed under the University of Illinois Open Source
      6 // License. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 ///
     10 /// \file
     11 /// \brief This file provides WebAssembly-specific target descriptions.
     12 ///
     13 //===----------------------------------------------------------------------===//
     14 
     15 #include "WebAssemblyMCTargetDesc.h"
     16 #include "InstPrinter/WebAssemblyInstPrinter.h"
     17 #include "WebAssemblyMCAsmInfo.h"
     18 #include "llvm/MC/MCCodeGenInfo.h"
     19 #include "llvm/MC/MCInstrInfo.h"
     20 #include "llvm/MC/MCRegisterInfo.h"
     21 #include "llvm/MC/MCStreamer.h"
     22 #include "llvm/MC/MCSubtargetInfo.h"
     23 #include "llvm/Support/ErrorHandling.h"
     24 #include "llvm/Support/TargetRegistry.h"
     25 using namespace llvm;
     26 
     27 #define DEBUG_TYPE "wasm-mc-target-desc"
     28 
     29 #define GET_INSTRINFO_MC_DESC
     30 #include "WebAssemblyGenInstrInfo.inc"
     31 
     32 #define GET_SUBTARGETINFO_MC_DESC
     33 #include "WebAssemblyGenSubtargetInfo.inc"
     34 
     35 #define GET_REGINFO_MC_DESC
     36 #include "WebAssemblyGenRegisterInfo.inc"
     37 
     38 static MCAsmInfo *createWebAssemblyMCAsmInfo(const MCRegisterInfo & /*MRI*/,
     39                                              const Triple &TT) {
     40   return new WebAssemblyMCAsmInfo(TT);
     41 }
     42 
     43 static MCInstrInfo *createWebAssemblyMCInstrInfo() {
     44   MCInstrInfo *X = new MCInstrInfo();
     45   InitWebAssemblyMCInstrInfo(X);
     46   return X;
     47 }
     48 
     49 static MCStreamer *createWebAssemblyMCStreamer(const Triple &T, MCContext &Ctx,
     50                                                MCAsmBackend &MAB,
     51                                                raw_pwrite_stream &OS,
     52                                                MCCodeEmitter *Emitter,
     53                                                bool RelaxAll) {
     54   return createELFStreamer(Ctx, MAB, OS, Emitter, RelaxAll);
     55 }
     56 
     57 static MCInstPrinter *
     58 createWebAssemblyMCInstPrinter(const Triple & /*T*/, unsigned SyntaxVariant,
     59                                const MCAsmInfo &MAI, const MCInstrInfo &MII,
     60                                const MCRegisterInfo &MRI) {
     61   assert(SyntaxVariant == 0);
     62   return new WebAssemblyInstPrinter(MAI, MII, MRI);
     63 }
     64 
     65 // Force static initialization.
     66 extern "C" void LLVMInitializeWebAssemblyTargetMC() {
     67   for (Target *T : {&TheWebAssemblyTarget32, &TheWebAssemblyTarget64}) {
     68     // Register the MC asm info.
     69     RegisterMCAsmInfoFn X(*T, createWebAssemblyMCAsmInfo);
     70 
     71     // Register the MC instruction info.
     72     TargetRegistry::RegisterMCInstrInfo(*T, createWebAssemblyMCInstrInfo);
     73 
     74     // Register the object streamer
     75     TargetRegistry::RegisterELFStreamer(*T, createWebAssemblyMCStreamer);
     76 
     77     // Register the MCInstPrinter.
     78     TargetRegistry::RegisterMCInstPrinter(*T, createWebAssemblyMCInstPrinter);
     79 
     80     // Register the MC code emitter
     81     TargetRegistry::RegisterMCCodeEmitter(*T, createWebAssemblyMCCodeEmitter);
     82 
     83     // Register the ASM Backend
     84     TargetRegistry::RegisterMCAsmBackend(*T, createWebAssemblyAsmBackend);
     85   }
     86 }
     87