PPCMCTargetDesc.cpp revision 655b8de7b2ab773a977e0c524307e71354d8af29 
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/ErrorHandling.h"
24#include "llvm/Support/TargetRegistry.h"
25
26#define GET_INSTRINFO_MC_DESC
27#include "PPCGenInstrInfo.inc"
28
29#define GET_SUBTARGETINFO_MC_DESC
30#include "PPCGenSubtargetInfo.inc"
31
32#define GET_REGINFO_MC_DESC
33#include "PPCGenRegisterInfo.inc"
34
35using namespace llvm;
36
37static MCInstrInfo *createPPCMCInstrInfo() {
38  MCInstrInfo *X = new MCInstrInfo();
39  InitPPCMCInstrInfo(X);
40  return X;
41}
42
43static MCRegisterInfo *createPPCMCRegisterInfo(StringRef TT) {
44  Triple TheTriple(TT);
45  bool isPPC64 = (TheTriple.getArch() == Triple::ppc64);
46  unsigned Flavour = isPPC64 ? 0 : 1;
47  unsigned RA = isPPC64 ? PPC::LR8 : PPC::LR;
48
49  MCRegisterInfo *X = new MCRegisterInfo();
50  InitPPCMCRegisterInfo(X, RA, Flavour, Flavour);
51  return X;
52}
53
54static MCSubtargetInfo *createPPCMCSubtargetInfo(StringRef TT, StringRef CPU,
55                                                 StringRef FS) {
56  MCSubtargetInfo *X = new MCSubtargetInfo();
57  InitPPCMCSubtargetInfo(X, TT, CPU, FS);
58  return X;
59}
60
61static MCAsmInfo *createPPCMCAsmInfo(const Target &T, StringRef TT) {
62  Triple TheTriple(TT);
63  bool isPPC64 = TheTriple.getArch() == Triple::ppc64;
64
65  MCAsmInfo *MAI;
66  if (TheTriple.isOSDarwin())
67    MAI = new PPCMCAsmInfoDarwin(isPPC64);
68  else
69    MAI = new PPCLinuxMCAsmInfo(isPPC64);
70
71  // Initial state of the frame pointer is R1.
72  MachineLocation Dst(MachineLocation::VirtualFP);
73  MachineLocation Src(PPC::R1, 0);
74  MAI->addInitialFrameState(0, Dst, Src);
75
76  return MAI;
77}
78
79static MCCodeGenInfo *createPPCMCCodeGenInfo(StringRef TT, Reloc::Model RM,
80                                             CodeModel::Model CM,
81                                             CodeGenOpt::Level OL) {
82  MCCodeGenInfo *X = new MCCodeGenInfo();
83
84  if (RM == Reloc::Default) {
85    Triple T(TT);
86    if (T.isOSDarwin())
87      RM = Reloc::DynamicNoPIC;
88    else
89      RM = Reloc::Static;
90  }
91  X->InitMCCodeGenInfo(RM, CM, OL);
92  return X;
93}
94
95// This is duplicated code. Refactor this.
96static MCStreamer *createMCStreamer(const Target &T, StringRef TT,
97                                    MCContext &Ctx, MCAsmBackend &MAB,
98                                    raw_ostream &OS,
99                                    MCCodeEmitter *Emitter,
100                                    bool RelaxAll,
101                                    bool NoExecStack) {
102  if (Triple(TT).isOSDarwin())
103    return createMachOStreamer(Ctx, MAB, OS, Emitter, RelaxAll);
104
105  return createELFStreamer(Ctx, MAB, OS, Emitter, RelaxAll, NoExecStack);
106}
107
108static MCInstPrinter *createPPCMCInstPrinter(const Target &T,
109                                             unsigned SyntaxVariant,
110                                             const MCAsmInfo &MAI,
111                                             const MCSubtargetInfo &STI) {
112  return new PPCInstPrinter(MAI, SyntaxVariant);
113}
114
115extern "C" void LLVMInitializePowerPCTargetMC() {
116  // Register the MC asm info.
117  RegisterMCAsmInfoFn C(ThePPC32Target, createPPCMCAsmInfo);
118  RegisterMCAsmInfoFn D(ThePPC64Target, createPPCMCAsmInfo);
119
120  // Register the MC codegen info.
121  TargetRegistry::RegisterMCCodeGenInfo(ThePPC32Target, createPPCMCCodeGenInfo);
122  TargetRegistry::RegisterMCCodeGenInfo(ThePPC64Target, createPPCMCCodeGenInfo);
123
124  // Register the MC instruction info.
125  TargetRegistry::RegisterMCInstrInfo(ThePPC32Target, createPPCMCInstrInfo);
126  TargetRegistry::RegisterMCInstrInfo(ThePPC64Target, createPPCMCInstrInfo);
127
128  // Register the MC register info.
129  TargetRegistry::RegisterMCRegInfo(ThePPC32Target, createPPCMCRegisterInfo);
130  TargetRegistry::RegisterMCRegInfo(ThePPC64Target, createPPCMCRegisterInfo);
131
132  // Register the MC subtarget info.
133  TargetRegistry::RegisterMCSubtargetInfo(ThePPC32Target,
134                                          createPPCMCSubtargetInfo);
135  TargetRegistry::RegisterMCSubtargetInfo(ThePPC64Target,
136                                          createPPCMCSubtargetInfo);
137
138  // Register the MC Code Emitter
139  TargetRegistry::RegisterMCCodeEmitter(ThePPC32Target, createPPCMCCodeEmitter);
140  TargetRegistry::RegisterMCCodeEmitter(ThePPC64Target, createPPCMCCodeEmitter);
141
142    // Register the asm backend.
143  TargetRegistry::RegisterMCAsmBackend(ThePPC32Target, createPPCAsmBackend);
144  TargetRegistry::RegisterMCAsmBackend(ThePPC64Target, createPPCAsmBackend);
145
146  // Register the object streamer.
147  TargetRegistry::RegisterMCObjectStreamer(ThePPC32Target, createMCStreamer);
148  TargetRegistry::RegisterMCObjectStreamer(ThePPC64Target, createMCStreamer);
149
150  // Register the MCInstPrinter.
151  TargetRegistry::RegisterMCInstPrinter(ThePPC32Target, createPPCMCInstPrinter);
152  TargetRegistry::RegisterMCInstPrinter(ThePPC64Target, createPPCMCInstPrinter);
153}
154