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 "InstPrinter/PPCInstPrinter.h"
  17 #include "llvm/MC/MachineLocation.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/Target/TargetRegistry.h"
  23
  24 #define GET_INSTRINFO_MC_DESC
  25 #include "PPCGenInstrInfo.inc"
  26
  27 #define GET_SUBTARGETINFO_MC_DESC
  28 #include "PPCGenSubtargetInfo.inc"
  29
  30 #define GET_REGINFO_MC_DESC
  31 #include "PPCGenRegisterInfo.inc"
  32
  33 using namespace llvm;
  34
  35 static MCInstrInfo *createPPCMCInstrInfo() {
  36   MCInstrInfo *X = new MCInstrInfo();
  37   InitPPCMCInstrInfo(X);
  38   return X;
  39 }
  40
  41 static MCRegisterInfo *createPPCMCRegisterInfo(StringRef TT) {
  42   Triple TheTriple(TT);
  43   bool isPPC64 = (TheTriple.getArch() == Triple::ppc64);
  44   unsigned Flavour = isPPC64 ? 0 : 1;
  45   unsigned RA = isPPC64 ? PPC::LR8 : PPC::LR;
  46
  47   MCRegisterInfo *X = new MCRegisterInfo();
  48   InitPPCMCRegisterInfo(X, RA, Flavour, Flavour);
  49   return X;
  50 }
  51
  52 static MCSubtargetInfo *createPPCMCSubtargetInfo(StringRef TT, StringRef CPU,
  53                                                  StringRef FS) {
  54   MCSubtargetInfo *X = new MCSubtargetInfo();
  55   InitPPCMCSubtargetInfo(X, TT, CPU, FS);
  56   return X;
  57 }
  58
  59 static MCAsmInfo *createPPCMCAsmInfo(const Target &T, StringRef TT) {
  60   Triple TheTriple(TT);
  61   bool isPPC64 = TheTriple.getArch() == Triple::ppc64;
  62
  63   MCAsmInfo *MAI;
  64   if (TheTriple.isOSDarwin())
  65     MAI = new PPCMCAsmInfoDarwin(isPPC64);
  66   else
  67     MAI = new PPCLinuxMCAsmInfo(isPPC64);
  68
  69   // Initial state of the frame pointer is R1.
  70   MachineLocation Dst(MachineLocation::VirtualFP);
  71   MachineLocation Src(PPC::R1, 0);
  72   MAI->addInitialFrameState(0, Dst, Src);
  73
  74   return MAI;
  75 }
  76
  77 static MCCodeGenInfo *createPPCMCCodeGenInfo(StringRef TT, Reloc::Model RM,
  78                                              CodeModel::Model CM) {
  79   MCCodeGenInfo *X = new MCCodeGenInfo();
  80
  81   if (RM == Reloc::Default) {
  82     Triple T(TT);
  83     if (T.isOSDarwin())
  84       RM = Reloc::DynamicNoPIC;
  85     else
  86       RM = Reloc::Static;
  87   }
  88   X->InitMCCodeGenInfo(RM, CM);
  89   return X;
  90 }
  91
  92 // This is duplicated code. Refactor this.
  93 static MCStreamer *createMCStreamer(const Target &T, StringRef TT,
  94                                     MCContext &Ctx, MCAsmBackend &MAB,
  95                                     raw_ostream &OS,
  96                                     MCCodeEmitter *Emitter,
  97                                     bool RelaxAll,
  98                                     bool NoExecStack) {
  99   if (Triple(TT).isOSDarwin())
 100     return createMachOStreamer(Ctx, MAB, OS, Emitter, RelaxAll);
 101
 102   return createELFStreamer(Ctx, MAB, OS, Emitter, RelaxAll, NoExecStack);
 103 }
 104
 105 static MCInstPrinter *createPPCMCInstPrinter(const Target &T,
 106                                              unsigned SyntaxVariant,
 107                                              const MCAsmInfo &MAI) {
 108   return new PPCInstPrinter(MAI, SyntaxVariant);
 109 }
 110
 111 extern "C" void LLVMInitializePowerPCTargetMC() {
 112   // Register the MC asm info.
 113   RegisterMCAsmInfoFn C(ThePPC32Target, createPPCMCAsmInfo);
 114   RegisterMCAsmInfoFn D(ThePPC64Target, createPPCMCAsmInfo);
 115
 116   // Register the MC codegen info.
 117   TargetRegistry::RegisterMCCodeGenInfo(ThePPC32Target, createPPCMCCodeGenInfo);
 118   TargetRegistry::RegisterMCCodeGenInfo(ThePPC64Target, createPPCMCCodeGenInfo);
 119
 120   // Register the MC instruction info.
 121   TargetRegistry::RegisterMCInstrInfo(ThePPC32Target, createPPCMCInstrInfo);
 122   TargetRegistry::RegisterMCInstrInfo(ThePPC64Target, createPPCMCInstrInfo);
 123
 124   // Register the MC register info.
 125   TargetRegistry::RegisterMCRegInfo(ThePPC32Target, createPPCMCRegisterInfo);
 126   TargetRegistry::RegisterMCRegInfo(ThePPC64Target, createPPCMCRegisterInfo);
 127
 128   // Register the MC subtarget info.
 129   TargetRegistry::RegisterMCSubtargetInfo(ThePPC32Target,
 130                                           createPPCMCSubtargetInfo);
 131   TargetRegistry::RegisterMCSubtargetInfo(ThePPC64Target,
 132                                           createPPCMCSubtargetInfo);
 133
 134   // Register the MC Code Emitter
 135   TargetRegistry::RegisterMCCodeEmitter(ThePPC32Target, createPPCMCCodeEmitter);
 136   TargetRegistry::RegisterMCCodeEmitter(ThePPC64Target, createPPCMCCodeEmitter);
 137
 138     // Register the asm backend.
 139   TargetRegistry::RegisterMCAsmBackend(ThePPC32Target, createPPCAsmBackend);
 140   TargetRegistry::RegisterMCAsmBackend(ThePPC64Target, createPPCAsmBackend);
 141
 142   // Register the object streamer.
 143   TargetRegistry::RegisterMCObjectStreamer(ThePPC32Target, createMCStreamer);
 144   TargetRegistry::RegisterMCObjectStreamer(ThePPC64Target, createMCStreamer);
 145
 146   // Register the MCInstPrinter.
 147   TargetRegistry::RegisterMCInstPrinter(ThePPC32Target, createPPCMCInstPrinter);
 148   TargetRegistry::RegisterMCInstPrinter(ThePPC64Target, createPPCMCInstPrinter);
 149 }