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 "InstPrinter/HexagonInstPrinter.h"
  17 #include "llvm/MC/MCCodeGenInfo.h"
  18 #include "llvm/MC/MCInstrInfo.h"
  19 #include "llvm/MC/MCRegisterInfo.h"
  20 #include "llvm/MC/MCStreamer.h"
  21 #include "llvm/MC/MCSubtargetInfo.h"
  22 #include "llvm/MC/MachineLocation.h"
  23 #include "llvm/Support/ErrorHandling.h"
  24 #include "llvm/Support/TargetRegistry.h"
  25
  26 using namespace llvm;
  27
  28 #define GET_INSTRINFO_MC_DESC
  29 #include "HexagonGenInstrInfo.inc"
  30
  31 #define GET_SUBTARGETINFO_MC_DESC
  32 #include "HexagonGenSubtargetInfo.inc"
  33
  34 #define GET_REGINFO_MC_DESC
  35 #include "HexagonGenRegisterInfo.inc"
  36
  37 static MCInstrInfo *createHexagonMCInstrInfo() {
  38   MCInstrInfo *X = new MCInstrInfo();
  39   InitHexagonMCInstrInfo(X);
  40   return X;
  41 }
  42
  43 static MCRegisterInfo *createHexagonMCRegisterInfo(StringRef TT) {
  44   MCRegisterInfo *X = new MCRegisterInfo();
  45   InitHexagonMCRegisterInfo(X, Hexagon::R0);
  46   return X;
  47 }
  48
  49 static MCSubtargetInfo *
  50 createHexagonMCSubtargetInfo(StringRef TT, StringRef CPU, StringRef FS) {
  51   MCSubtargetInfo *X = new MCSubtargetInfo();
  52   InitHexagonMCSubtargetInfo(X, TT, CPU, FS);
  53   return X;
  54 }
  55
  56 static MCAsmInfo *createHexagonMCAsmInfo(const MCRegisterInfo &MRI,
  57                                          StringRef TT) {
  58   MCAsmInfo *MAI = new HexagonMCAsmInfo(TT);
  59
  60   // VirtualFP = (R30 + #0).
  61   MCCFIInstruction Inst =
  62       MCCFIInstruction::createDefCfa(nullptr, Hexagon::R30, 0);
  63   MAI->addInitialFrameState(Inst);
  64
  65   return MAI;
  66 }
  67
  68 static MCCodeGenInfo *createHexagonMCCodeGenInfo(StringRef TT, Reloc::Model RM,
  69                                                  CodeModel::Model CM,
  70                                                  CodeGenOpt::Level OL) {
  71   MCCodeGenInfo *X = new MCCodeGenInfo();
  72   // For the time being, use static relocations, since there's really no
  73   // support for PIC yet.
  74   X->InitMCCodeGenInfo(Reloc::Static, CM, OL);
  75   return X;
  76 }
  77
  78 // Force static initialization.
  79 extern "C" void LLVMInitializeHexagonTargetMC() {
  80   // Register the MC asm info.
  81   RegisterMCAsmInfoFn X(TheHexagonTarget, createHexagonMCAsmInfo);
  82
  83   // Register the MC codegen info.
  84   TargetRegistry::RegisterMCCodeGenInfo(TheHexagonTarget,
  85                                         createHexagonMCCodeGenInfo);
  86
  87   // Register the MC instruction info.
  88   TargetRegistry::RegisterMCInstrInfo(TheHexagonTarget,
  89                                       createHexagonMCInstrInfo);
  90
  91   // Register the MC register info.
  92   TargetRegistry::RegisterMCRegInfo(TheHexagonTarget,
  93                                     createHexagonMCRegisterInfo);
  94
  95   // Register the MC subtarget info.
  96   TargetRegistry::RegisterMCSubtargetInfo(TheHexagonTarget,
  97                                           createHexagonMCSubtargetInfo);
  98
  99   // Register the MC Code Emitter
 100   TargetRegistry::RegisterMCCodeEmitter(TheHexagonTarget,
 101                                         createHexagonMCCodeEmitter);
 102 }