lib/Target/PowerPC/MCTargetDesc/PPCMCTargetDesc.cpp

   1 //===-- PPCMCTargetDesc.cpp - PowerPC 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 PowerPC specific target descriptions.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "PPCMCTargetDesc.h"
  15 #include "PPCMCAsmInfo.h"
  16 #include "llvm/MC/MachineLocation.h"
  17 #include "llvm/MC/MCInstrInfo.h"
  18 #include "llvm/MC/MCRegisterInfo.h"
  19 #include "llvm/MC/MCStreamer.h"
  20 #include "llvm/MC/MCSubtargetInfo.h"
  21 #include "llvm/Target/TargetRegistry.h"
  22
  23 #define GET_INSTRINFO_MC_DESC
  24 #include "PPCGenInstrInfo.inc"
  25
  26 #define GET_SUBTARGETINFO_MC_DESC
  27 #include "PPCGenSubtargetInfo.inc"
  28
  29 #define GET_REGINFO_MC_DESC
  30 #include "PPCGenRegisterInfo.inc"
  31
  32 using namespace llvm;
  33
  34 static MCInstrInfo *createPPCMCInstrInfo() {
  35   MCInstrInfo *X = new MCInstrInfo();
  36   InitPPCMCInstrInfo(X);
  37   return X;
  38 }
  39
  40 static MCRegisterInfo *createPPCMCRegisterInfo(StringRef TT) {
  41   Triple TheTriple(TT);
  42   bool isPPC64 = (TheTriple.getArch() == Triple::ppc64);
  43   unsigned Flavour = isPPC64 ? 0 : 1;
  44   unsigned RA = isPPC64 ? PPC::LR8 : PPC::LR;
  45
  46   MCRegisterInfo *X = new MCRegisterInfo();
  47   InitPPCMCRegisterInfo(X, RA, Flavour, Flavour);
  48   return X;
  49 }
  50
  51 static MCSubtargetInfo *createPPCMCSubtargetInfo(StringRef TT, StringRef CPU,
  52                                                  StringRef FS) {
  53   MCSubtargetInfo *X = new MCSubtargetInfo();
  54   InitPPCMCSubtargetInfo(X, TT, CPU, FS);
  55   return X;
  56 }
  57
  58 static MCAsmInfo *createPPCMCAsmInfo(const Target &T, StringRef TT) {
  59   Triple TheTriple(TT);
  60   bool isPPC64 = TheTriple.getArch() == Triple::ppc64;
  61
  62   MCAsmInfo *MAI;
  63   if (TheTriple.isOSDarwin())
  64     MAI = new PPCMCAsmInfoDarwin(isPPC64);
  65   else
  66     MAI = new PPCLinuxMCAsmInfo(isPPC64);
  67
  68   // Initial state of the frame pointer is R1.
  69   MachineLocation Dst(MachineLocation::VirtualFP);
  70   MachineLocation Src(PPC::R1, 0);
  71   MAI->addInitialFrameState(0, Dst, Src);
  72
  73   return MAI;
  74 }
  75
  76 static MCCodeGenInfo *createPPCMCCodeGenInfo(StringRef TT, Reloc::Model RM,
  77                                              CodeModel::Model CM) {
  78   MCCodeGenInfo *X = new MCCodeGenInfo();
  79
  80   if (RM == Reloc::Default) {
  81     Triple T(TT);
  82     if (T.isOSDarwin())
  83       RM = Reloc::DynamicNoPIC;
  84     else
  85       RM = Reloc::Static;
  86   }
  87   X->InitMCCodeGenInfo(RM, CM);
  88   return X;
  89 }
  90
  91 // This is duplicated code. Refactor this.
  92 static MCStreamer *createMCStreamer(const Target &T, const std::string &TT,
  93                                     MCContext &Ctx, TargetAsmBackend &TAB,
  94                                     raw_ostream &OS,
  95                                     MCCodeEmitter *Emitter,
  96                                     bool RelaxAll,
  97                                     bool NoExecStack) {
  98   if (Triple(TT).isOSDarwin())
  99     return createMachOStreamer(Ctx, TAB, OS, Emitter, RelaxAll);
 100
 101   return NULL;
 102 }
 103
 104 extern "C" void LLVMInitializePowerPCTargetMC() {
 105   // Register the MC asm info.
 106   RegisterMCAsmInfoFn C(ThePPC32Target, createPPCMCAsmInfo);
 107   RegisterMCAsmInfoFn D(ThePPC64Target, createPPCMCAsmInfo);
 108
 109   // Register the MC codegen info.
 110   TargetRegistry::RegisterMCCodeGenInfo(ThePPC32Target, createPPCMCCodeGenInfo);
 111   TargetRegistry::RegisterMCCodeGenInfo(ThePPC64Target, createPPCMCCodeGenInfo);
 112
 113   // Register the MC instruction info.
 114   TargetRegistry::RegisterMCInstrInfo(ThePPC32Target, createPPCMCInstrInfo);
 115   TargetRegistry::RegisterMCInstrInfo(ThePPC64Target, createPPCMCInstrInfo);
 116
 117   // Register the MC register info.
 118   TargetRegistry::RegisterMCRegInfo(ThePPC32Target, createPPCMCRegisterInfo);
 119   TargetRegistry::RegisterMCRegInfo(ThePPC64Target, createPPCMCRegisterInfo);
 120
 121   // Register the MC subtarget info.
 122   TargetRegistry::RegisterMCSubtargetInfo(ThePPC32Target,
 123                                           createPPCMCSubtargetInfo);
 124   TargetRegistry::RegisterMCSubtargetInfo(ThePPC64Target,
 125                                           createPPCMCSubtargetInfo);
 126
 127   // Register the MC Code Emitter
 128   TargetRegistry::RegisterCodeEmitter(ThePPC32Target, createPPCMCCodeEmitter);
 129   TargetRegistry::RegisterCodeEmitter(ThePPC64Target, createPPCMCCodeEmitter);
 130
 131     // Register the asm backend.
 132   TargetRegistry::RegisterAsmBackend(ThePPC32Target, createPPCAsmBackend);
 133   TargetRegistry::RegisterAsmBackend(ThePPC64Target, createPPCAsmBackend);
 134
 135   // Register the object streamer.
 136   TargetRegistry::RegisterObjectStreamer(ThePPC32Target, createMCStreamer);
 137   TargetRegistry::RegisterObjectStreamer(ThePPC64Target, createMCStreamer);
 138 }