MipsMCTargetDesc.cpp revision 15602d786beee8308af765ade2e6debde2b81ad2 
1//===-- MipsMCTargetDesc.cpp - Mips 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 Mips specific target descriptions.
11//
12//===----------------------------------------------------------------------===//
13
14#include "MipsMCTargetDesc.h"
15#include "InstPrinter/MipsInstPrinter.h"
16#include "MipsMCAsmInfo.h"
17#include "MipsTargetStreamer.h"
18#include "llvm/MC/MCCodeGenInfo.h"
19#include "llvm/MC/MCELF.h"
20#include "llvm/MC/MCELFStreamer.h"
21#include "llvm/MC/MCInstrInfo.h"
22#include "llvm/MC/MCRegisterInfo.h"
23#include "llvm/MC/MCSubtargetInfo.h"
24#include "llvm/MC/MCSymbol.h"
25#include "llvm/MC/MachineLocation.h"
26#include "llvm/Support/CommandLine.h"
27#include "llvm/Support/ErrorHandling.h"
28#include "llvm/Support/FormattedStream.h"
29#include "llvm/Support/TargetRegistry.h"
30
31#define GET_INSTRINFO_MC_DESC
32#include "MipsGenInstrInfo.inc"
33
34#define GET_SUBTARGETINFO_MC_DESC
35#include "MipsGenSubtargetInfo.inc"
36
37#define GET_REGINFO_MC_DESC
38#include "MipsGenRegisterInfo.inc"
39
40using namespace llvm;
41
42static std::string ParseMipsTriple(StringRef TT, StringRef CPU) {
43  std::string MipsArchFeature;
44  size_t DashPosition = 0;
45  StringRef TheTriple;
46
47  // Let's see if there is a dash, like mips-unknown-linux.
48  DashPosition = TT.find('-');
49
50  if (DashPosition == StringRef::npos) {
51    // No dash, we check the string size.
52    TheTriple = TT.substr(0);
53  } else {
54    // We are only interested in substring before dash.
55    TheTriple = TT.substr(0,DashPosition);
56  }
57
58  if (TheTriple == "mips" || TheTriple == "mipsel") {
59    if (CPU.empty() || CPU == "mips32") {
60      MipsArchFeature = "+mips32";
61    } else if (CPU == "mips32r2") {
62      MipsArchFeature = "+mips32r2";
63    }
64  } else {
65      if (CPU.empty() || CPU == "mips64") {
66        MipsArchFeature = "+mips64";
67      } else if (CPU == "mips64r2") {
68        MipsArchFeature = "+mips64r2";
69      }
70  }
71  return MipsArchFeature;
72}
73
74static MCInstrInfo *createMipsMCInstrInfo() {
75  MCInstrInfo *X = new MCInstrInfo();
76  InitMipsMCInstrInfo(X);
77  return X;
78}
79
80static MCRegisterInfo *createMipsMCRegisterInfo(StringRef TT) {
81  MCRegisterInfo *X = new MCRegisterInfo();
82  InitMipsMCRegisterInfo(X, Mips::RA);
83  return X;
84}
85
86static MCSubtargetInfo *createMipsMCSubtargetInfo(StringRef TT, StringRef CPU,
87                                                  StringRef FS) {
88  std::string ArchFS = ParseMipsTriple(TT,CPU);
89  if (!FS.empty()) {
90    if (!ArchFS.empty())
91      ArchFS = ArchFS + "," + FS.str();
92    else
93      ArchFS = FS;
94  }
95  MCSubtargetInfo *X = new MCSubtargetInfo();
96  InitMipsMCSubtargetInfo(X, TT, CPU, ArchFS);
97  return X;
98}
99
100static MCAsmInfo *createMipsMCAsmInfo(const MCRegisterInfo &MRI, StringRef TT) {
101  MCAsmInfo *MAI = new MipsMCAsmInfo(TT);
102
103  unsigned SP = MRI.getDwarfRegNum(Mips::SP, true);
104  MCCFIInstruction Inst = MCCFIInstruction::createDefCfa(0, SP, 0);
105  MAI->addInitialFrameState(Inst);
106
107  return MAI;
108}
109
110static MCCodeGenInfo *createMipsMCCodeGenInfo(StringRef TT, Reloc::Model RM,
111                                              CodeModel::Model CM,
112                                              CodeGenOpt::Level OL) {
113  MCCodeGenInfo *X = new MCCodeGenInfo();
114  if (CM == CodeModel::JITDefault)
115    RM = Reloc::Static;
116  else if (RM == Reloc::Default)
117    RM = Reloc::PIC_;
118  X->InitMCCodeGenInfo(RM, CM, OL);
119  return X;
120}
121
122static MCInstPrinter *createMipsMCInstPrinter(const Target &T,
123                                              unsigned SyntaxVariant,
124                                              const MCAsmInfo &MAI,
125                                              const MCInstrInfo &MII,
126                                              const MCRegisterInfo &MRI,
127                                              const MCSubtargetInfo &STI) {
128  return new MipsInstPrinter(MAI, MII, MRI);
129}
130
131static MCStreamer *createMCStreamer(const Target &T, StringRef TT,
132                                    MCContext &Context, MCAsmBackend &MAB,
133                                    raw_ostream &OS, MCCodeEmitter *Emitter,
134                                    bool RelaxAll, bool NoExecStack) {
135  MipsTargetELFStreamer *S = new MipsTargetELFStreamer();
136  return createELFStreamer(Context, S, MAB, OS, Emitter, RelaxAll, NoExecStack);
137}
138
139static MCStreamer *
140createMCAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS,
141                    bool isVerboseAsm, bool useLoc, bool useCFI,
142                    bool useDwarfDirectory, MCInstPrinter *InstPrint,
143                    MCCodeEmitter *CE, MCAsmBackend *TAB, bool ShowInst) {
144  MipsTargetAsmStreamer *S = new MipsTargetAsmStreamer();
145
146  return llvm::createAsmStreamer(Ctx, S, OS, isVerboseAsm, useLoc, useCFI,
147                                 useDwarfDirectory, InstPrint, CE, TAB,
148                                 ShowInst);
149}
150
151extern "C" void LLVMInitializeMipsTargetMC() {
152  // Register the MC asm info.
153  RegisterMCAsmInfoFn X(TheMipsTarget, createMipsMCAsmInfo);
154  RegisterMCAsmInfoFn Y(TheMipselTarget, createMipsMCAsmInfo);
155  RegisterMCAsmInfoFn A(TheMips64Target, createMipsMCAsmInfo);
156  RegisterMCAsmInfoFn B(TheMips64elTarget, createMipsMCAsmInfo);
157
158  // Register the MC codegen info.
159  TargetRegistry::RegisterMCCodeGenInfo(TheMipsTarget,
160                                        createMipsMCCodeGenInfo);
161  TargetRegistry::RegisterMCCodeGenInfo(TheMipselTarget,
162                                        createMipsMCCodeGenInfo);
163  TargetRegistry::RegisterMCCodeGenInfo(TheMips64Target,
164                                        createMipsMCCodeGenInfo);
165  TargetRegistry::RegisterMCCodeGenInfo(TheMips64elTarget,
166                                        createMipsMCCodeGenInfo);
167
168  // Register the MC instruction info.
169  TargetRegistry::RegisterMCInstrInfo(TheMipsTarget, createMipsMCInstrInfo);
170  TargetRegistry::RegisterMCInstrInfo(TheMipselTarget, createMipsMCInstrInfo);
171  TargetRegistry::RegisterMCInstrInfo(TheMips64Target, createMipsMCInstrInfo);
172  TargetRegistry::RegisterMCInstrInfo(TheMips64elTarget,
173                                      createMipsMCInstrInfo);
174
175  // Register the MC register info.
176  TargetRegistry::RegisterMCRegInfo(TheMipsTarget, createMipsMCRegisterInfo);
177  TargetRegistry::RegisterMCRegInfo(TheMipselTarget, createMipsMCRegisterInfo);
178  TargetRegistry::RegisterMCRegInfo(TheMips64Target, createMipsMCRegisterInfo);
179  TargetRegistry::RegisterMCRegInfo(TheMips64elTarget,
180                                    createMipsMCRegisterInfo);
181
182  // Register the MC Code Emitter
183  TargetRegistry::RegisterMCCodeEmitter(TheMipsTarget,
184                                        createMipsMCCodeEmitterEB);
185  TargetRegistry::RegisterMCCodeEmitter(TheMipselTarget,
186                                        createMipsMCCodeEmitterEL);
187  TargetRegistry::RegisterMCCodeEmitter(TheMips64Target,
188                                        createMipsMCCodeEmitterEB);
189  TargetRegistry::RegisterMCCodeEmitter(TheMips64elTarget,
190                                        createMipsMCCodeEmitterEL);
191
192  // Register the object streamer.
193  TargetRegistry::RegisterMCObjectStreamer(TheMipsTarget, createMCStreamer);
194  TargetRegistry::RegisterMCObjectStreamer(TheMipselTarget, createMCStreamer);
195  TargetRegistry::RegisterMCObjectStreamer(TheMips64Target, createMCStreamer);
196  TargetRegistry::RegisterMCObjectStreamer(TheMips64elTarget,
197                                           createMCStreamer);
198
199  // Register the asm streamer.
200  TargetRegistry::RegisterAsmStreamer(TheMipsTarget, createMCAsmStreamer);
201  TargetRegistry::RegisterAsmStreamer(TheMipselTarget, createMCAsmStreamer);
202  TargetRegistry::RegisterAsmStreamer(TheMips64Target, createMCAsmStreamer);
203  TargetRegistry::RegisterAsmStreamer(TheMips64elTarget, createMCAsmStreamer);
204
205  // Register the asm backend.
206  TargetRegistry::RegisterMCAsmBackend(TheMipsTarget,
207                                       createMipsAsmBackendEB32);
208  TargetRegistry::RegisterMCAsmBackend(TheMipselTarget,
209                                       createMipsAsmBackendEL32);
210  TargetRegistry::RegisterMCAsmBackend(TheMips64Target,
211                                       createMipsAsmBackendEB64);
212  TargetRegistry::RegisterMCAsmBackend(TheMips64elTarget,
213                                       createMipsAsmBackendEL64);
214
215  // Register the MC subtarget info.
216  TargetRegistry::RegisterMCSubtargetInfo(TheMipsTarget,
217                                          createMipsMCSubtargetInfo);
218  TargetRegistry::RegisterMCSubtargetInfo(TheMipselTarget,
219                                          createMipsMCSubtargetInfo);
220  TargetRegistry::RegisterMCSubtargetInfo(TheMips64Target,
221                                          createMipsMCSubtargetInfo);
222  TargetRegistry::RegisterMCSubtargetInfo(TheMips64elTarget,
223                                          createMipsMCSubtargetInfo);
224
225  // Register the MCInstPrinter.
226  TargetRegistry::RegisterMCInstPrinter(TheMipsTarget,
227                                        createMipsMCInstPrinter);
228  TargetRegistry::RegisterMCInstPrinter(TheMipselTarget,
229                                        createMipsMCInstPrinter);
230  TargetRegistry::RegisterMCInstPrinter(TheMips64Target,
231                                        createMipsMCInstPrinter);
232  TargetRegistry::RegisterMCInstPrinter(TheMips64elTarget,
233                                        createMipsMCInstPrinter);
234}
235