lib/Target/Hexagon/MCTargetDesc/HexagonMCTargetDesc.cpp

   1 //===-- HexagonMCTargetDesc.cpp - Hexagon 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 // This file provides Hexagon specific target descriptions.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "HexagonMCTargetDesc.h"
  15 #include "HexagonMCAsmInfo.h"
  16 #include "MCTargetDesc/HexagonInstPrinter.h"
  17 #include "llvm/MC/MCCodeGenInfo.h"
  18 #include "llvm/MC/MCELFStreamer.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/MC/MachineLocation.h"
  24 #include "llvm/Support/ErrorHandling.h"
  25 #include "llvm/Support/TargetRegistry.h"
  26
  27 using namespace llvm;
  28
  29 #define GET_INSTRINFO_MC_DESC
  30 #include "HexagonGenInstrInfo.inc"
  31
  32 #define GET_SUBTARGETINFO_MC_DESC
  33 #include "HexagonGenSubtargetInfo.inc"
  34
  35 #define GET_REGINFO_MC_DESC
  36 #include "HexagonGenRegisterInfo.inc"
  37
  38 MCInstrInfo *llvm::createHexagonMCInstrInfo() {
  39   MCInstrInfo *X = new MCInstrInfo();
  40   InitHexagonMCInstrInfo(X);
  41   return X;
  42 }
  43
  44 static MCRegisterInfo *createHexagonMCRegisterInfo(StringRef TT) {
  45   MCRegisterInfo *X = new MCRegisterInfo();
  46   InitHexagonMCRegisterInfo(X, Hexagon::R0);
  47   return X;
  48 }
  49
  50 static MCStreamer *
  51 createHexagonELFStreamer(MCContext &Context, MCAsmBackend &MAB,
  52                          raw_ostream &OS, MCCodeEmitter *CE,
  53                          bool RelaxAll) {
  54   MCELFStreamer *ES = new MCELFStreamer(Context, MAB, OS, CE);
  55   return ES;
  56 }
  57
  58
  59 static MCSubtargetInfo *
  60 createHexagonMCSubtargetInfo(StringRef TT, StringRef CPU, StringRef FS) {
  61   MCSubtargetInfo *X = new MCSubtargetInfo();
  62   InitHexagonMCSubtargetInfo(X, TT, CPU, FS);
  63   return X;
  64 }
  65
  66 static MCAsmInfo *createHexagonMCAsmInfo(const MCRegisterInfo &MRI,
  67                                          StringRef TT) {
  68   MCAsmInfo *MAI = new HexagonMCAsmInfo(TT);
  69
  70   // VirtualFP = (R30 + #0).
  71   MCCFIInstruction Inst =
  72       MCCFIInstruction::createDefCfa(nullptr, Hexagon::R30, 0);
  73   MAI->addInitialFrameState(Inst);
  74
  75   return MAI;
  76 }
  77
  78 static MCStreamer *createMCStreamer(StringRef TT, MCContext &Context,
  79                                     MCAsmBackend &MAB, raw_ostream &OS,
  80                                     MCCodeEmitter *Emitter,
  81                                     MCSubtargetInfo const &STI, bool RelaxAll) {
  82   MCStreamer *ES = createHexagonELFStreamer(Context, MAB, OS, Emitter, RelaxAll);
  83   new MCTargetStreamer(*ES);
  84   return ES;
  85 }
  86
  87
  88 static MCCodeGenInfo *createHexagonMCCodeGenInfo(StringRef TT, Reloc::Model RM,
  89                                                  CodeModel::Model CM,
  90                                                  CodeGenOpt::Level OL) {
  91   MCCodeGenInfo *X = new MCCodeGenInfo();
  92   // For the time being, use static relocations, since there's really no
  93   // support for PIC yet.
  94   X->InitMCCodeGenInfo(Reloc::Static, CM, OL);
  95   return X;
  96 }
  97 static MCInstPrinter *createHexagonMCInstPrinter(const Target &T,
  98                                                  unsigned SyntaxVariant,
  99                                                  const MCAsmInfo &MAI,
 100                                                  const MCInstrInfo &MII,
 101                                                  const MCRegisterInfo &MRI,
 102                                                  const MCSubtargetInfo &STI) {
 103     return new HexagonInstPrinter(MAI, MII, MRI);
 104 }
 105
 106 // Force static initialization.
 107 extern "C" void LLVMInitializeHexagonTargetMC() {
 108   // Register the MC asm info.
 109   RegisterMCAsmInfoFn X(TheHexagonTarget, createHexagonMCAsmInfo);
 110
 111   // Register the MC codegen info.
 112   TargetRegistry::RegisterMCCodeGenInfo(TheHexagonTarget,
 113                                         createHexagonMCCodeGenInfo);
 114
 115   // Register the MC instruction info.
 116   TargetRegistry::RegisterMCInstrInfo(TheHexagonTarget,
 117                                       createHexagonMCInstrInfo);
 118
 119   // Register the MC register info.
 120   TargetRegistry::RegisterMCRegInfo(TheHexagonTarget,
 121                                     createHexagonMCRegisterInfo);
 122
 123   // Register the MC subtarget info.
 124   TargetRegistry::RegisterMCSubtargetInfo(TheHexagonTarget,
 125                                           createHexagonMCSubtargetInfo);
 126
 127   // Register the MC Code Emitter
 128   TargetRegistry::RegisterMCCodeEmitter(TheHexagonTarget,
 129                                         createHexagonMCCodeEmitter);
 130
 131   // Register the MC Inst Printer
 132   TargetRegistry::RegisterMCInstPrinter(TheHexagonTarget,
 133                                         createHexagonMCInstPrinter);
 134
 135   // Register the asm backend
 136   TargetRegistry::RegisterMCAsmBackend(TheHexagonTarget,
 137                                        createHexagonAsmBackend);
 138
 139   // Register the obj streamer
 140   TargetRegistry::RegisterMCObjectStreamer(TheHexagonTarget, createMCStreamer);
 141 }