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 "llvm/MC/MCCodeGenInfo.h"
  17 #include "llvm/MC/MCInstrInfo.h"
  18 #include "llvm/MC/MCRegisterInfo.h"
  19 #include "llvm/MC/MCSubtargetInfo.h"
  20 #include "llvm/MC/MachineLocation.h"
  21 #include "llvm/Support/ErrorHandling.h"
  22 #include "llvm/Support/TargetRegistry.h"
  23
  24 #define GET_INSTRINFO_MC_DESC
  25 #include "HexagonGenInstrInfo.inc"
  26
  27 #define GET_SUBTARGETINFO_MC_DESC
  28 #include "HexagonGenSubtargetInfo.inc"
  29
  30 #define GET_REGINFO_MC_DESC
  31 #include "HexagonGenRegisterInfo.inc"
  32
  33 using namespace llvm;
  34
  35 static MCInstrInfo *createHexagonMCInstrInfo() {
  36   MCInstrInfo *X = new MCInstrInfo();
  37   InitHexagonMCInstrInfo(X);
  38   return X;
  39 }
  40
  41 static MCRegisterInfo *createHexagonMCRegisterInfo(StringRef TT) {
  42   MCRegisterInfo *X = new MCRegisterInfo();
  43   InitHexagonMCRegisterInfo(X, Hexagon::R0);
  44   return X;
  45 }
  46
  47 static MCSubtargetInfo *createHexagonMCSubtargetInfo(StringRef TT,
  48                                                      StringRef CPU,
  49                                                      StringRef FS) {
  50   MCSubtargetInfo *X = new MCSubtargetInfo();
  51   InitHexagonMCSubtargetInfo(X, TT, CPU, FS);
  52   return X;
  53 }
  54
  55 static MCAsmInfo *createHexagonMCAsmInfo(const Target &T, StringRef TT) {
  56   MCAsmInfo *MAI = new HexagonMCAsmInfo(T, TT);
  57
  58   // VirtualFP = (R30 + #0).
  59   MachineLocation Dst(MachineLocation::VirtualFP);
  60   MachineLocation Src(Hexagon::R30, 0);
  61   MAI->addInitialFrameState(0, Dst, Src);
  62
  63   return MAI;
  64 }
  65
  66 static MCCodeGenInfo *createHexagonMCCodeGenInfo(StringRef TT, Reloc::Model RM,
  67                                              CodeModel::Model CM,
  68                                              CodeGenOpt::Level OL) {
  69   MCCodeGenInfo *X = new MCCodeGenInfo();
  70   // For the time being, use static relocations, since there's really no
  71   // support for PIC yet.
  72   X->InitMCCodeGenInfo(Reloc::Static, CM, OL);
  73   return X;
  74 }
  75
  76 // Force static initialization.
  77 extern "C" void LLVMInitializeHexagonTargetMC() {
  78   // Register the MC asm info.
  79   RegisterMCAsmInfoFn X(TheHexagonTarget, createHexagonMCAsmInfo);
  80
  81   // Register the MC codegen info.
  82   TargetRegistry::RegisterMCCodeGenInfo(TheHexagonTarget,
  83                                         createHexagonMCCodeGenInfo);
  84
  85   // Register the MC instruction info.
  86   TargetRegistry::RegisterMCInstrInfo(TheHexagonTarget, createHexagonMCInstrInfo);
  87
  88   // Register the MC register info.
  89   TargetRegistry::RegisterMCRegInfo(TheHexagonTarget,
  90                                     createHexagonMCRegisterInfo);
  91
  92   // Register the MC subtarget info.
  93   TargetRegistry::RegisterMCSubtargetInfo(TheHexagonTarget,
  94                                           createHexagonMCSubtargetInfo);
  95 }