lib/Target/Mips/MCTargetDesc/MipsMCTargetDesc.cpp

   1 //===-- MipsMCTargetDesc.cpp - Mips Target Descriptions ---------*- C++ -*-===//
   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 Mips specific target descriptions.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "MipsMCTargetDesc.h"
  15 #include "MipsMCAsmInfo.h"
  16 #include "llvm/MC/MachineLocation.h"
  17 #include "llvm/MC/MCInstrInfo.h"
  18 #include "llvm/MC/MCRegisterInfo.h"
  19 #include "llvm/MC/MCSubtargetInfo.h"
  20 #include "llvm/Target/TargetRegistry.h"
  21
  22 #define GET_INSTRINFO_MC_DESC
  23 #include "MipsGenInstrInfo.inc"
  24
  25 #define GET_SUBTARGETINFO_MC_DESC
  26 #include "MipsGenSubtargetInfo.inc"
  27
  28 #define GET_REGINFO_MC_DESC
  29 #include "MipsGenRegisterInfo.inc"
  30
  31 using namespace llvm;
  32
  33 static MCInstrInfo *createMipsMCInstrInfo() {
  34   MCInstrInfo *X = new MCInstrInfo();
  35   InitMipsMCInstrInfo(X);
  36   return X;
  37 }
  38
  39 static MCRegisterInfo *createMipsMCRegisterInfo(StringRef TT) {
  40   MCRegisterInfo *X = new MCRegisterInfo();
  41   InitMipsMCRegisterInfo(X, Mips::RA);
  42   return X;
  43 }
  44
  45 static MCSubtargetInfo *createMipsMCSubtargetInfo(StringRef TT, StringRef CPU,
  46                                                   StringRef FS) {
  47   MCSubtargetInfo *X = new MCSubtargetInfo();
  48   InitMipsMCSubtargetInfo(X, TT, CPU, FS);
  49   return X;
  50 }
  51
  52 static MCAsmInfo *createMipsMCAsmInfo(const Target &T, StringRef TT) {
  53   MCAsmInfo *MAI = new MipsMCAsmInfo(T, TT);
  54
  55   MachineLocation Dst(MachineLocation::VirtualFP);
  56   MachineLocation Src(Mips::SP, 0);
  57   MAI->addInitialFrameState(0, Dst, Src);
  58
  59   return MAI;
  60 }
  61
  62 MCCodeGenInfo *createMipsMCCodeGenInfo(StringRef TT, Reloc::Model RM,
  63                                        CodeModel::Model CM) {
  64   MCCodeGenInfo *X = new MCCodeGenInfo();
  65   if (RM == Reloc::Default) {
  66     // Abicall enables PIC by default
  67     if (TT.find("mipsallegrex") != std::string::npos ||
  68         TT.find("psp") != std::string::npos)
  69       RM = Reloc::Static;
  70     else
  71       RM = Reloc::PIC_;
  72   }
  73   X->InitMCCodeGenInfo(RM, CM);
  74   return X;
  75 }
  76
  77 extern "C" void LLVMInitializeMipsTargetMC() {
  78   // Register the MC asm info.
  79   RegisterMCAsmInfoFn X(TheMipsTarget, createMipsMCAsmInfo);
  80   RegisterMCAsmInfoFn Y(TheMipselTarget, createMipsMCAsmInfo);
  81
  82   // Register the MC codegen info.
  83   TargetRegistry::RegisterMCCodeGenInfo(TheMipsTarget,
  84                                         createMipsMCCodeGenInfo);
  85   TargetRegistry::RegisterMCCodeGenInfo(TheMipselTarget,
  86                                         createMipsMCCodeGenInfo);
  87
  88   // Register the MC instruction info.
  89   TargetRegistry::RegisterMCInstrInfo(TheMipsTarget, createMipsMCInstrInfo);
  90
  91   // Register the MC register info.
  92   TargetRegistry::RegisterMCRegInfo(TheMipsTarget, createMipsMCRegisterInfo);
  93   TargetRegistry::RegisterMCRegInfo(TheMipselTarget, createMipsMCRegisterInfo);
  94
  95   // Register the MC subtarget info.
  96   TargetRegistry::RegisterMCSubtargetInfo(TheMipsTarget,
  97                                           createMipsMCSubtargetInfo);
  98 }