contrib/llvm/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/MCCodeGenInfo.h"
  19 #include "llvm/MC/MCInstrInfo.h"
  20 #include "llvm/MC/MCRegisterInfo.h"
  21 #include "llvm/MC/MCStreamer.h"
  22 #include "llvm/MC/MCSubtargetInfo.h"
  23 #include "llvm/Support/TargetRegistry.h"
  24
  25 #define GET_INSTRINFO_MC_DESC
  26 #include "PPCGenInstrInfo.inc"
  27
  28 #define GET_SUBTARGETINFO_MC_DESC
  29 #include "PPCGenSubtargetInfo.inc"
  30
  31 #define GET_REGINFO_MC_DESC
  32 #include "PPCGenRegisterInfo.inc"
  33
  34 using namespace llvm;
  35
  36 static MCInstrInfo *createPPCMCInstrInfo() {
  37   MCInstrInfo *X = new MCInstrInfo();
  38   InitPPCMCInstrInfo(X);
  39   return X;
  40 }
  41
  42 static MCRegisterInfo *createPPCMCRegisterInfo(StringRef TT) {
  43   Triple TheTriple(TT);
  44   bool isPPC64 = (TheTriple.getArch() == Triple::ppc64);
  45   unsigned Flavour = isPPC64 ? 0 : 1;
  46   unsigned RA = isPPC64 ? PPC::LR8 : PPC::LR;
  47
  48   MCRegisterInfo *X = new MCRegisterInfo();
  49   InitPPCMCRegisterInfo(X, RA, Flavour, Flavour);
  50   return X;
  51 }
  52
  53 static MCSubtargetInfo *createPPCMCSubtargetInfo(StringRef TT, StringRef CPU,
  54                                                  StringRef FS) {
  55   MCSubtargetInfo *X = new MCSubtargetInfo();
  56   InitPPCMCSubtargetInfo(X, TT, CPU, FS);
  57   return X;
  58 }
  59
  60 static MCAsmInfo *createPPCMCAsmInfo(const Target &T, StringRef TT) {
  61   Triple TheTriple(TT);
  62   bool isPPC64 = TheTriple.getArch() == Triple::ppc64;
  63
  64   MCAsmInfo *MAI;
  65   if (TheTriple.isOSDarwin())
  66     MAI = new PPCMCAsmInfoDarwin(isPPC64);
  67   else
  68     MAI = new PPCLinuxMCAsmInfo(isPPC64);
  69
  70   // Initial state of the frame pointer is R1.
  71   MachineLocation Dst(MachineLocation::VirtualFP);
  72   MachineLocation Src(PPC::R1, 0);
  73   MAI->addInitialFrameState(0, Dst, Src);
  74
  75   return MAI;
  76 }
  77
  78 static MCCodeGenInfo *createPPCMCCodeGenInfo(StringRef TT, Reloc::Model RM,
  79                                              CodeModel::Model CM) {
  80   MCCodeGenInfo *X = new MCCodeGenInfo();
  81
  82   if (RM == Reloc::Default) {
  83     Triple T(TT);
  84     if (T.isOSDarwin())
  85       RM = Reloc::DynamicNoPIC;
  86     else
  87       RM = Reloc::Static;
  88   }
  89   X->InitMCCodeGenInfo(RM, CM);
  90   return X;
  91 }
  92
  93 // This is duplicated code. Refactor this.
  94 static MCStreamer *createMCStreamer(const Target &T, StringRef TT,
  95                                     MCContext &Ctx, MCAsmBackend &MAB,
  96                                     raw_ostream &OS,
  97                                     MCCodeEmitter *Emitter,
  98                                     bool RelaxAll,
  99                                     bool NoExecStack) {
 100   if (Triple(TT).isOSDarwin())
 101     return createMachOStreamer(Ctx, MAB, OS, Emitter, RelaxAll);
 102
 103   return createELFStreamer(Ctx, MAB, OS, Emitter, RelaxAll, NoExecStack);
 104 }
 105
 106 static MCInstPrinter *createPPCMCInstPrinter(const Target &T,
 107                                              unsigned SyntaxVariant,
 108                                              const MCAsmInfo &MAI,
 109                                              const MCSubtargetInfo &STI) {
 110   return new PPCInstPrinter(MAI, SyntaxVariant);
 111 }
 112
 113 extern "C" void LLVMInitializePowerPCTargetMC() {
 114   // Register the MC asm info.
 115   RegisterMCAsmInfoFn C(ThePPC32Target, createPPCMCAsmInfo);
 116   RegisterMCAsmInfoFn D(ThePPC64Target, createPPCMCAsmInfo);
 117
 118   // Register the MC codegen info.
 119   TargetRegistry::RegisterMCCodeGenInfo(ThePPC32Target, createPPCMCCodeGenInfo);
 120   TargetRegistry::RegisterMCCodeGenInfo(ThePPC64Target, createPPCMCCodeGenInfo);
 121
 122   // Register the MC instruction info.
 123   TargetRegistry::RegisterMCInstrInfo(ThePPC32Target, createPPCMCInstrInfo);
 124   TargetRegistry::RegisterMCInstrInfo(ThePPC64Target, createPPCMCInstrInfo);
 125
 126   // Register the MC register info.
 127   TargetRegistry::RegisterMCRegInfo(ThePPC32Target, createPPCMCRegisterInfo);
 128   TargetRegistry::RegisterMCRegInfo(ThePPC64Target, createPPCMCRegisterInfo);
 129
 130   // Register the MC subtarget info.
 131   TargetRegistry::RegisterMCSubtargetInfo(ThePPC32Target,
 132                                           createPPCMCSubtargetInfo);
 133   TargetRegistry::RegisterMCSubtargetInfo(ThePPC64Target,
 134                                           createPPCMCSubtargetInfo);
 135
 136   // Register the MC Code Emitter
 137   TargetRegistry::RegisterMCCodeEmitter(ThePPC32Target, createPPCMCCodeEmitter);
 138   TargetRegistry::RegisterMCCodeEmitter(ThePPC64Target, createPPCMCCodeEmitter);
 139
 140     // Register the asm backend.
 141   TargetRegistry::RegisterMCAsmBackend(ThePPC32Target, createPPCAsmBackend);
 142   TargetRegistry::RegisterMCAsmBackend(ThePPC64Target, createPPCAsmBackend);
 143
 144   // Register the object streamer.
 145   TargetRegistry::RegisterMCObjectStreamer(ThePPC32Target, createMCStreamer);
 146   TargetRegistry::RegisterMCObjectStreamer(ThePPC64Target, createMCStreamer);
 147
 148   // Register the MCInstPrinter.
 149   TargetRegistry::RegisterMCInstPrinter(ThePPC32Target, createPPCMCInstPrinter);
 150   TargetRegistry::RegisterMCInstPrinter(ThePPC64Target, createPPCMCInstPrinter);
 151 }