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 MCSubtargetInfo *
  51 createHexagonMCSubtargetInfo(StringRef TT, StringRef CPU, StringRef FS) {
  52   MCSubtargetInfo *X = new MCSubtargetInfo();
  53   InitHexagonMCSubtargetInfo(X, TT, CPU, FS);
  54   return X;
  55 }
  56
  57 static MCAsmInfo *createHexagonMCAsmInfo(const MCRegisterInfo &MRI,
  58                                          StringRef TT) {
  59   MCAsmInfo *MAI = new HexagonMCAsmInfo(TT);
  60
  61   // VirtualFP = (R30 + #0).
  62   MCCFIInstruction Inst =
  63       MCCFIInstruction::createDefCfa(nullptr, Hexagon::R30, 0);
  64   MAI->addInitialFrameState(Inst);
  65
  66   return MAI;
  67 }
  68
  69 static MCCodeGenInfo *createHexagonMCCodeGenInfo(StringRef TT, Reloc::Model RM,
  70                                                  CodeModel::Model CM,
  71                                                  CodeGenOpt::Level OL) {
  72   MCCodeGenInfo *X = new MCCodeGenInfo();
  73   // For the time being, use static relocations, since there's really no
  74   // support for PIC yet.
  75   X->initMCCodeGenInfo(Reloc::Static, CM, OL);
  76   return X;
  77 }
  78
  79 static MCInstPrinter *createHexagonMCInstPrinter(const Triple &T,
  80                                                  unsigned SyntaxVariant,
  81                                                  const MCAsmInfo &MAI,
  82                                                  const MCInstrInfo &MII,
  83                                                  const MCRegisterInfo &MRI) {
  84   if (SyntaxVariant == 0)
  85     return(new HexagonInstPrinter(MAI, MII, MRI));
  86   else
  87    return nullptr;
  88 }
  89
  90 // Force static initialization.
  91 extern "C" void LLVMInitializeHexagonTargetMC() {
  92   // Register the MC asm info.
  93   RegisterMCAsmInfoFn X(TheHexagonTarget, createHexagonMCAsmInfo);
  94
  95   // Register the MC codegen info.
  96   TargetRegistry::RegisterMCCodeGenInfo(TheHexagonTarget,
  97                                         createHexagonMCCodeGenInfo);
  98
  99   // Register the MC instruction info.
 100   TargetRegistry::RegisterMCInstrInfo(TheHexagonTarget,
 101                                       createHexagonMCInstrInfo);
 102
 103   // Register the MC register info.
 104   TargetRegistry::RegisterMCRegInfo(TheHexagonTarget,
 105                                     createHexagonMCRegisterInfo);
 106
 107   // Register the MC subtarget info.
 108   TargetRegistry::RegisterMCSubtargetInfo(TheHexagonTarget,
 109                                           createHexagonMCSubtargetInfo);
 110
 111   // Register the MC Code Emitter
 112   TargetRegistry::RegisterMCCodeEmitter(TheHexagonTarget,
 113                                         createHexagonMCCodeEmitter);
 114
 115   // Register the asm backend
 116   TargetRegistry::RegisterMCAsmBackend(TheHexagonTarget,
 117                                        createHexagonAsmBackend);
 118
 119   // Register the MC Inst Printer
 120   TargetRegistry::RegisterMCInstPrinter(TheHexagonTarget,
 121                                         createHexagonMCInstPrinter);
 122
 123   // Register the asm backend
 124   TargetRegistry::RegisterMCAsmBackend(TheHexagonTarget,
 125                                        createHexagonAsmBackend);
 126 }