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 #define GET_INSTRINFO_MC_DESC
  27 #include "HexagonGenInstrInfo.inc"
  28
  29 #define GET_SUBTARGETINFO_MC_DESC
  30 #include "HexagonGenSubtargetInfo.inc"
  31
  32 #define GET_REGINFO_MC_DESC
  33 #include "HexagonGenRegisterInfo.inc"
  34
  35 using namespace llvm;
  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 *createHexagonMCSubtargetInfo(StringRef TT,
  50                                                      StringRef CPU,
  51                                                      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 = MCCFIInstruction::createDefCfa(
  63       0, 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 // Force static initialization.
  80 extern "C" void LLVMInitializeHexagonTargetMC() {
  81   // Register the MC asm info.
  82   RegisterMCAsmInfoFn X(TheHexagonTarget, createHexagonMCAsmInfo);
  83
  84   // Register the MC codegen info.
  85   TargetRegistry::RegisterMCCodeGenInfo(TheHexagonTarget,
  86                                         createHexagonMCCodeGenInfo);
  87
  88   // Register the MC instruction info.
  89   TargetRegistry::RegisterMCInstrInfo(TheHexagonTarget, 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 }