PPCMCTargetDesc.cpp revision f38cc38fa647d4e72c053c39bbe0cdec1342535f 
1//===-- PPCMCTargetDesc.cpp - PowerPC Target Descriptions -----------------===//
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 "InstPrinter/PPCInstPrinter.h"
16#include "PPCMCAsmInfo.h"
17#include "llvm/MC/MCCodeGenInfo.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/MC/MachineLocation.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                  TheTriple.getArch() == Triple::ppc64le);
47  unsigned Flavour = isPPC64 ? 0 : 1;
48  unsigned RA = isPPC64 ? PPC::LR8 : PPC::LR;
49
50  MCRegisterInfo *X = new MCRegisterInfo();
51  InitPPCMCRegisterInfo(X, RA, Flavour, Flavour);
52  return X;
53}
54
55static MCSubtargetInfo *createPPCMCSubtargetInfo(StringRef TT, StringRef CPU,
56                                                 StringRef FS) {
57  MCSubtargetInfo *X = new MCSubtargetInfo();
58  InitPPCMCSubtargetInfo(X, TT, CPU, FS);
59  return X;
60}
61
62static MCAsmInfo *createPPCMCAsmInfo(const MCRegisterInfo &MRI, StringRef TT) {
63  Triple TheTriple(TT);
64  bool isPPC64 = (TheTriple.getArch() == Triple::ppc64 ||
65                  TheTriple.getArch() == Triple::ppc64le);
66
67  MCAsmInfo *MAI;
68  if (TheTriple.isOSDarwin())
69    MAI = new PPCMCAsmInfoDarwin(isPPC64);
70  else
71    MAI = new PPCLinuxMCAsmInfo(isPPC64);
72
73  // Initial state of the frame pointer is R1.
74  unsigned Reg = isPPC64 ? PPC::X1 : PPC::R1;
75  MCCFIInstruction Inst =
76      MCCFIInstruction::createDefCfa(0, MRI.getDwarfRegNum(Reg, true), 0);
77  MAI->addInitialFrameState(Inst);
78
79  return MAI;
80}
81
82static MCCodeGenInfo *createPPCMCCodeGenInfo(StringRef TT, Reloc::Model RM,
83                                             CodeModel::Model CM,
84                                             CodeGenOpt::Level OL) {
85  MCCodeGenInfo *X = new MCCodeGenInfo();
86
87  if (RM == Reloc::Default) {
88    Triple T(TT);
89    if (T.isOSDarwin())
90      RM = Reloc::DynamicNoPIC;
91    else
92      RM = Reloc::Static;
93  }
94  if (CM == CodeModel::Default) {
95    Triple T(TT);
96    if (!T.isOSDarwin() &&
97        (T.getArch() == Triple::ppc64 || T.getArch() == Triple::ppc64le))
98      CM = CodeModel::Medium;
99  }
100  X->InitMCCodeGenInfo(RM, CM, OL);
101  return X;
102}
103
104// This is duplicated code. Refactor this.
105static MCStreamer *createMCStreamer(const Target &T, StringRef TT,
106                                    MCContext &Ctx, MCAsmBackend &MAB,
107                                    raw_ostream &OS,
108                                    MCCodeEmitter *Emitter,
109                                    bool RelaxAll,
110                                    bool NoExecStack) {
111  if (Triple(TT).isOSDarwin())
112    return createMachOStreamer(Ctx, MAB, OS, Emitter, RelaxAll);
113
114  return createELFStreamer(Ctx, MAB, OS, Emitter, RelaxAll, NoExecStack);
115}
116
117static MCInstPrinter *createPPCMCInstPrinter(const Target &T,
118                                             unsigned SyntaxVariant,
119                                             const MCAsmInfo &MAI,
120                                             const MCInstrInfo &MII,
121                                             const MCRegisterInfo &MRI,
122                                             const MCSubtargetInfo &STI) {
123  bool isDarwin = Triple(STI.getTargetTriple()).isOSDarwin();
124  return new PPCInstPrinter(MAI, MII, MRI, isDarwin);
125}
126
127extern "C" void LLVMInitializePowerPCTargetMC() {
128  // Register the MC asm info.
129  RegisterMCAsmInfoFn C(ThePPC32Target, createPPCMCAsmInfo);
130  RegisterMCAsmInfoFn D(ThePPC64Target, createPPCMCAsmInfo);
131  RegisterMCAsmInfoFn E(ThePPC64LETarget, createPPCMCAsmInfo);
132
133  // Register the MC codegen info.
134  TargetRegistry::RegisterMCCodeGenInfo(ThePPC32Target, createPPCMCCodeGenInfo);
135  TargetRegistry::RegisterMCCodeGenInfo(ThePPC64Target, createPPCMCCodeGenInfo);
136  TargetRegistry::RegisterMCCodeGenInfo(ThePPC64LETarget,
137                                        createPPCMCCodeGenInfo);
138
139  // Register the MC instruction info.
140  TargetRegistry::RegisterMCInstrInfo(ThePPC32Target, createPPCMCInstrInfo);
141  TargetRegistry::RegisterMCInstrInfo(ThePPC64Target, createPPCMCInstrInfo);
142  TargetRegistry::RegisterMCInstrInfo(ThePPC64LETarget,
143                                      createPPCMCInstrInfo);
144
145  // Register the MC register info.
146  TargetRegistry::RegisterMCRegInfo(ThePPC32Target, createPPCMCRegisterInfo);
147  TargetRegistry::RegisterMCRegInfo(ThePPC64Target, createPPCMCRegisterInfo);
148  TargetRegistry::RegisterMCRegInfo(ThePPC64LETarget, createPPCMCRegisterInfo);
149
150  // Register the MC subtarget info.
151  TargetRegistry::RegisterMCSubtargetInfo(ThePPC32Target,
152                                          createPPCMCSubtargetInfo);
153  TargetRegistry::RegisterMCSubtargetInfo(ThePPC64Target,
154                                          createPPCMCSubtargetInfo);
155  TargetRegistry::RegisterMCSubtargetInfo(ThePPC64LETarget,
156                                          createPPCMCSubtargetInfo);
157
158  // Register the MC Code Emitter
159  TargetRegistry::RegisterMCCodeEmitter(ThePPC32Target, createPPCMCCodeEmitter);
160  TargetRegistry::RegisterMCCodeEmitter(ThePPC64Target, createPPCMCCodeEmitter);
161  TargetRegistry::RegisterMCCodeEmitter(ThePPC64LETarget,
162                                        createPPCMCCodeEmitter);
163
164    // Register the asm backend.
165  TargetRegistry::RegisterMCAsmBackend(ThePPC32Target, createPPCAsmBackend);
166  TargetRegistry::RegisterMCAsmBackend(ThePPC64Target, createPPCAsmBackend);
167  TargetRegistry::RegisterMCAsmBackend(ThePPC64LETarget, createPPCAsmBackend);
168
169  // Register the object streamer.
170  TargetRegistry::RegisterMCObjectStreamer(ThePPC32Target, createMCStreamer);
171  TargetRegistry::RegisterMCObjectStreamer(ThePPC64Target, createMCStreamer);
172  TargetRegistry::RegisterMCObjectStreamer(ThePPC64LETarget, createMCStreamer);
173
174  // Register the MCInstPrinter.
175  TargetRegistry::RegisterMCInstPrinter(ThePPC32Target, createPPCMCInstPrinter);
176  TargetRegistry::RegisterMCInstPrinter(ThePPC64Target, createPPCMCInstPrinter);
177  TargetRegistry::RegisterMCInstPrinter(ThePPC64LETarget,
178                                        createPPCMCInstPrinter);
179}
180