PPCMCTargetDesc.cpp revision 5a364c5561ec04e33a6f5d52c14f1bac6f247ea0 
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 "PPCTargetStreamer.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/MC/MCSymbol.h"
24#include "llvm/MC/MachineLocation.h"
25#include "llvm/Support/ErrorHandling.h"
26#include "llvm/Support/FormattedStream.h"
27#include "llvm/Support/TargetRegistry.h"
28
29#define GET_INSTRINFO_MC_DESC
30#include "PPCGenInstrInfo.inc"
31
32#define GET_SUBTARGETINFO_MC_DESC
33#include "PPCGenSubtargetInfo.inc"
34
35#define GET_REGINFO_MC_DESC
36#include "PPCGenRegisterInfo.inc"
37
38using namespace llvm;
39
40// pin vtable to this file
41PPCTargetStreamer::~PPCTargetStreamer() {}
42
43static MCInstrInfo *createPPCMCInstrInfo() {
44  MCInstrInfo *X = new MCInstrInfo();
45  InitPPCMCInstrInfo(X);
46  return X;
47}
48
49static MCRegisterInfo *createPPCMCRegisterInfo(StringRef TT) {
50  Triple TheTriple(TT);
51  bool isPPC64 = (TheTriple.getArch() == Triple::ppc64 ||
52                  TheTriple.getArch() == Triple::ppc64le);
53  unsigned Flavour = isPPC64 ? 0 : 1;
54  unsigned RA = isPPC64 ? PPC::LR8 : PPC::LR;
55
56  MCRegisterInfo *X = new MCRegisterInfo();
57  InitPPCMCRegisterInfo(X, RA, Flavour, Flavour);
58  return X;
59}
60
61static MCSubtargetInfo *createPPCMCSubtargetInfo(StringRef TT, StringRef CPU,
62                                                 StringRef FS) {
63  MCSubtargetInfo *X = new MCSubtargetInfo();
64  InitPPCMCSubtargetInfo(X, TT, CPU, FS);
65  return X;
66}
67
68static MCAsmInfo *createPPCMCAsmInfo(const MCRegisterInfo &MRI, StringRef TT) {
69  Triple TheTriple(TT);
70  bool isPPC64 = (TheTriple.getArch() == Triple::ppc64 ||
71                  TheTriple.getArch() == Triple::ppc64le);
72
73  MCAsmInfo *MAI;
74  if (TheTriple.isOSDarwin())
75    MAI = new PPCMCAsmInfoDarwin(isPPC64);
76  else
77    MAI = new PPCLinuxMCAsmInfo(isPPC64);
78
79  // Initial state of the frame pointer is R1.
80  unsigned Reg = isPPC64 ? PPC::X1 : PPC::R1;
81  MCCFIInstruction Inst =
82      MCCFIInstruction::createDefCfa(0, MRI.getDwarfRegNum(Reg, true), 0);
83  MAI->addInitialFrameState(Inst);
84
85  return MAI;
86}
87
88static MCCodeGenInfo *createPPCMCCodeGenInfo(StringRef TT, Reloc::Model RM,
89                                             CodeModel::Model CM,
90                                             CodeGenOpt::Level OL) {
91  MCCodeGenInfo *X = new MCCodeGenInfo();
92
93  if (RM == Reloc::Default) {
94    Triple T(TT);
95    if (T.isOSDarwin())
96      RM = Reloc::DynamicNoPIC;
97    else
98      RM = Reloc::Static;
99  }
100  if (CM == CodeModel::Default) {
101    Triple T(TT);
102    if (!T.isOSDarwin() &&
103        (T.getArch() == Triple::ppc64 || T.getArch() == Triple::ppc64le))
104      CM = CodeModel::Medium;
105  }
106  X->InitMCCodeGenInfo(RM, CM, OL);
107  return X;
108}
109
110namespace {
111class PPCTargetAsmStreamer : public PPCTargetStreamer {
112  formatted_raw_ostream &OS;
113
114public:
115  PPCTargetAsmStreamer(formatted_raw_ostream &OS) : OS(OS) {}
116  virtual void emitTCEntry(const MCSymbol &S) {
117    OS << "\t.tc ";
118    OS << S.getName();
119    OS << "[TC],";
120    OS << S.getName();
121    OS << '\n';
122  }
123};
124
125class PPCTargetELFStreamer : public PPCTargetStreamer {
126  virtual void emitTCEntry(const MCSymbol &S) {
127    // Creates a R_PPC64_TOC relocation
128    Streamer->EmitSymbolValue(&S, 8);
129  }
130};
131}
132
133// This is duplicated code. Refactor this.
134static MCStreamer *createMCStreamer(const Target &T, StringRef TT,
135                                    MCContext &Ctx, MCAsmBackend &MAB,
136                                    raw_ostream &OS,
137                                    MCCodeEmitter *Emitter,
138                                    bool RelaxAll,
139                                    bool NoExecStack) {
140  if (Triple(TT).isOSDarwin())
141    return createMachOStreamer(Ctx, MAB, OS, Emitter, RelaxAll);
142
143  PPCTargetStreamer *S = new PPCTargetELFStreamer();
144  return createELFStreamer(Ctx, S, MAB, OS, Emitter, RelaxAll, NoExecStack);
145}
146
147static MCStreamer *
148createMCAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS,
149                    bool isVerboseAsm, bool useLoc, bool useCFI,
150                    bool useDwarfDirectory, MCInstPrinter *InstPrint,
151                    MCCodeEmitter *CE, MCAsmBackend *TAB, bool ShowInst) {
152  PPCTargetStreamer *S = new PPCTargetAsmStreamer(OS);
153
154  return llvm::createAsmStreamer(Ctx, S, OS, isVerboseAsm, useLoc, useCFI,
155                                 useDwarfDirectory, InstPrint, CE, TAB,
156                                 ShowInst);
157}
158
159static MCInstPrinter *createPPCMCInstPrinter(const Target &T,
160                                             unsigned SyntaxVariant,
161                                             const MCAsmInfo &MAI,
162                                             const MCInstrInfo &MII,
163                                             const MCRegisterInfo &MRI,
164                                             const MCSubtargetInfo &STI) {
165  bool isDarwin = Triple(STI.getTargetTriple()).isOSDarwin();
166  return new PPCInstPrinter(MAI, MII, MRI, isDarwin);
167}
168
169extern "C" void LLVMInitializePowerPCTargetMC() {
170  // Register the MC asm info.
171  RegisterMCAsmInfoFn C(ThePPC32Target, createPPCMCAsmInfo);
172  RegisterMCAsmInfoFn D(ThePPC64Target, createPPCMCAsmInfo);
173  RegisterMCAsmInfoFn E(ThePPC64LETarget, createPPCMCAsmInfo);
174
175  // Register the MC codegen info.
176  TargetRegistry::RegisterMCCodeGenInfo(ThePPC32Target, createPPCMCCodeGenInfo);
177  TargetRegistry::RegisterMCCodeGenInfo(ThePPC64Target, createPPCMCCodeGenInfo);
178  TargetRegistry::RegisterMCCodeGenInfo(ThePPC64LETarget,
179                                        createPPCMCCodeGenInfo);
180
181  // Register the MC instruction info.
182  TargetRegistry::RegisterMCInstrInfo(ThePPC32Target, createPPCMCInstrInfo);
183  TargetRegistry::RegisterMCInstrInfo(ThePPC64Target, createPPCMCInstrInfo);
184  TargetRegistry::RegisterMCInstrInfo(ThePPC64LETarget,
185                                      createPPCMCInstrInfo);
186
187  // Register the MC register info.
188  TargetRegistry::RegisterMCRegInfo(ThePPC32Target, createPPCMCRegisterInfo);
189  TargetRegistry::RegisterMCRegInfo(ThePPC64Target, createPPCMCRegisterInfo);
190  TargetRegistry::RegisterMCRegInfo(ThePPC64LETarget, createPPCMCRegisterInfo);
191
192  // Register the MC subtarget info.
193  TargetRegistry::RegisterMCSubtargetInfo(ThePPC32Target,
194                                          createPPCMCSubtargetInfo);
195  TargetRegistry::RegisterMCSubtargetInfo(ThePPC64Target,
196                                          createPPCMCSubtargetInfo);
197  TargetRegistry::RegisterMCSubtargetInfo(ThePPC64LETarget,
198                                          createPPCMCSubtargetInfo);
199
200  // Register the MC Code Emitter
201  TargetRegistry::RegisterMCCodeEmitter(ThePPC32Target, createPPCMCCodeEmitter);
202  TargetRegistry::RegisterMCCodeEmitter(ThePPC64Target, createPPCMCCodeEmitter);
203  TargetRegistry::RegisterMCCodeEmitter(ThePPC64LETarget,
204                                        createPPCMCCodeEmitter);
205
206    // Register the asm backend.
207  TargetRegistry::RegisterMCAsmBackend(ThePPC32Target, createPPCAsmBackend);
208  TargetRegistry::RegisterMCAsmBackend(ThePPC64Target, createPPCAsmBackend);
209  TargetRegistry::RegisterMCAsmBackend(ThePPC64LETarget, createPPCAsmBackend);
210
211  // Register the object streamer.
212  TargetRegistry::RegisterMCObjectStreamer(ThePPC32Target, createMCStreamer);
213  TargetRegistry::RegisterMCObjectStreamer(ThePPC64Target, createMCStreamer);
214  TargetRegistry::RegisterMCObjectStreamer(ThePPC64LETarget, createMCStreamer);
215
216  // Register the asm streamer.
217  TargetRegistry::RegisterAsmStreamer(ThePPC32Target, createMCAsmStreamer);
218  TargetRegistry::RegisterAsmStreamer(ThePPC64Target, createMCAsmStreamer);
219  TargetRegistry::RegisterAsmStreamer(ThePPC64LETarget, createMCAsmStreamer);
220
221  // Register the MCInstPrinter.
222  TargetRegistry::RegisterMCInstPrinter(ThePPC32Target, createPPCMCInstPrinter);
223  TargetRegistry::RegisterMCInstPrinter(ThePPC64Target, createPPCMCInstPrinter);
224  TargetRegistry::RegisterMCInstPrinter(ThePPC64LETarget,
225                                        createPPCMCInstPrinter);
226}
227