PPCMCTargetDesc.cpp revision 28c85a81a17dd719a254dc00cbeb484774893197 
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
33using namespace llvm;
34
35static MCInstrInfo *createPPCMCInstrInfo() {
36  MCInstrInfo *X = new MCInstrInfo();
37  InitPPCMCInstrInfo(X);
38  return X;
39}
40
41static 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
52static 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
59static 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
77static 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.
93static 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 NULL;
103}
104
105static MCInstPrinter *createPPCMCInstPrinter(const Target &T,
106                                             unsigned SyntaxVariant,
107                                             const MCAsmInfo &MAI) {
108  return new PPCInstPrinter(MAI, SyntaxVariant);
109}
110
111extern "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}
150