MipsMCTargetDesc.cpp revision dba14301f0098f9fc5c0d244bf334f55a6a21960 
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 "MCTargetDesc/MipsELFStreamer.h"
15#include "MipsMCTargetDesc.h"
16#include "InstPrinter/MipsInstPrinter.h"
17#include "MipsMCAsmInfo.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/MachineLocation.h"
24#include "llvm/Support/ErrorHandling.h"
25#include "llvm/Support/TargetRegistry.h"
26
27#define GET_INSTRINFO_MC_DESC
28#include "MipsGenInstrInfo.inc"
29
30#define GET_SUBTARGETINFO_MC_DESC
31#include "MipsGenSubtargetInfo.inc"
32
33#define GET_REGINFO_MC_DESC
34#include "MipsGenRegisterInfo.inc"
35
36using namespace llvm;
37
38static std::string ParseMipsTriple(StringRef TT, StringRef CPU) {
39  std::string MipsArchFeature;
40  size_t DashPosition = 0;
41  StringRef TheTriple;
42
43  // Let's see if there is a dash, like mips-unknown-linux.
44  DashPosition = TT.find('-');
45
46  if (DashPosition == StringRef::npos) {
47    // No dash, we check the string size.
48    TheTriple = TT.substr(0);
49  } else {
50    // We are only interested in substring before dash.
51    TheTriple = TT.substr(0,DashPosition);
52  }
53
54  if (TheTriple == "mips" || TheTriple == "mipsel") {
55    if (CPU.empty() || CPU == "mips32") {
56      MipsArchFeature = "+mips32";
57    } else if (CPU == "mips32r2") {
58      MipsArchFeature = "+mips32r2";
59    }
60  } else {
61      if (CPU.empty() || CPU == "mips64") {
62        MipsArchFeature = "+mips64";
63      } else if (CPU == "mips64r2") {
64        MipsArchFeature = "+mips64r2";
65      }
66  }
67  return MipsArchFeature;
68}
69
70static MCInstrInfo *createMipsMCInstrInfo() {
71  MCInstrInfo *X = new MCInstrInfo();
72  InitMipsMCInstrInfo(X);
73  return X;
74}
75
76static MCRegisterInfo *createMipsMCRegisterInfo(StringRef TT) {
77  MCRegisterInfo *X = new MCRegisterInfo();
78  InitMipsMCRegisterInfo(X, Mips::RA);
79  return X;
80}
81
82static MCSubtargetInfo *createMipsMCSubtargetInfo(StringRef TT, StringRef CPU,
83                                                  StringRef FS) {
84  std::string ArchFS = ParseMipsTriple(TT,CPU);
85  if (!FS.empty()) {
86    if (!ArchFS.empty())
87      ArchFS = ArchFS + "," + FS.str();
88    else
89      ArchFS = FS;
90  }
91  MCSubtargetInfo *X = new MCSubtargetInfo();
92  InitMipsMCSubtargetInfo(X, TT, CPU, ArchFS);
93  return X;
94}
95
96static MCAsmInfo *createMipsMCAsmInfo(const Target &T, StringRef TT) {
97  MCAsmInfo *MAI = new MipsMCAsmInfo(T, TT);
98
99  MachineLocation Dst(MachineLocation::VirtualFP);
100  MachineLocation Src(Mips::SP, 0);
101  MAI->addInitialFrameState(0, Dst, Src);
102
103  return MAI;
104}
105
106static MCCodeGenInfo *createMipsMCCodeGenInfo(StringRef TT, Reloc::Model RM,
107                                              CodeModel::Model CM,
108                                              CodeGenOpt::Level OL) {
109  MCCodeGenInfo *X = new MCCodeGenInfo();
110  if (CM == CodeModel::JITDefault)
111    RM = Reloc::Static;
112  else if (RM == Reloc::Default)
113    RM = Reloc::PIC_;
114  X->InitMCCodeGenInfo(RM, CM, OL);
115  return X;
116}
117
118static MCInstPrinter *createMipsMCInstPrinter(const Target &T,
119                                              unsigned SyntaxVariant,
120                                              const MCAsmInfo &MAI,
121                                              const MCInstrInfo &MII,
122                                              const MCRegisterInfo &MRI,
123                                              const MCSubtargetInfo &STI) {
124  return new MipsInstPrinter(MAI, MII, MRI);
125}
126
127static MCStreamer *createMCStreamer(const Target &T, StringRef TT,
128                                    MCContext &Ctx, MCAsmBackend &MAB,
129                                    raw_ostream &_OS,
130                                    MCCodeEmitter *_Emitter,
131                                    bool RelaxAll,
132                                    bool NoExecStack) {
133  Triple TheTriple(TT);
134
135  return createMipsELFStreamer(Ctx, MAB, _OS, _Emitter, RelaxAll, NoExecStack);
136}
137
138extern "C" void LLVMInitializeMipsTargetMC() {
139  // Register the MC asm info.
140  RegisterMCAsmInfoFn X(TheMipsTarget, createMipsMCAsmInfo);
141  RegisterMCAsmInfoFn Y(TheMipselTarget, createMipsMCAsmInfo);
142  RegisterMCAsmInfoFn A(TheMips64Target, createMipsMCAsmInfo);
143  RegisterMCAsmInfoFn B(TheMips64elTarget, createMipsMCAsmInfo);
144
145  // Register the MC codegen info.
146  TargetRegistry::RegisterMCCodeGenInfo(TheMipsTarget,
147                                        createMipsMCCodeGenInfo);
148  TargetRegistry::RegisterMCCodeGenInfo(TheMipselTarget,
149                                        createMipsMCCodeGenInfo);
150  TargetRegistry::RegisterMCCodeGenInfo(TheMips64Target,
151                                        createMipsMCCodeGenInfo);
152  TargetRegistry::RegisterMCCodeGenInfo(TheMips64elTarget,
153                                        createMipsMCCodeGenInfo);
154
155  // Register the MC instruction info.
156  TargetRegistry::RegisterMCInstrInfo(TheMipsTarget, createMipsMCInstrInfo);
157  TargetRegistry::RegisterMCInstrInfo(TheMipselTarget, createMipsMCInstrInfo);
158  TargetRegistry::RegisterMCInstrInfo(TheMips64Target, createMipsMCInstrInfo);
159  TargetRegistry::RegisterMCInstrInfo(TheMips64elTarget,
160                                      createMipsMCInstrInfo);
161
162  // Register the MC register info.
163  TargetRegistry::RegisterMCRegInfo(TheMipsTarget, createMipsMCRegisterInfo);
164  TargetRegistry::RegisterMCRegInfo(TheMipselTarget, createMipsMCRegisterInfo);
165  TargetRegistry::RegisterMCRegInfo(TheMips64Target, createMipsMCRegisterInfo);
166  TargetRegistry::RegisterMCRegInfo(TheMips64elTarget,
167                                    createMipsMCRegisterInfo);
168
169  // Register the MC Code Emitter
170  TargetRegistry::RegisterMCCodeEmitter(TheMipsTarget,
171                                        createMipsMCCodeEmitterEB);
172  TargetRegistry::RegisterMCCodeEmitter(TheMipselTarget,
173                                        createMipsMCCodeEmitterEL);
174  TargetRegistry::RegisterMCCodeEmitter(TheMips64Target,
175                                        createMipsMCCodeEmitterEB);
176  TargetRegistry::RegisterMCCodeEmitter(TheMips64elTarget,
177                                        createMipsMCCodeEmitterEL);
178
179  // Register the object streamer.
180  TargetRegistry::RegisterMCObjectStreamer(TheMipsTarget, createMCStreamer);
181  TargetRegistry::RegisterMCObjectStreamer(TheMipselTarget, createMCStreamer);
182  TargetRegistry::RegisterMCObjectStreamer(TheMips64Target, createMCStreamer);
183  TargetRegistry::RegisterMCObjectStreamer(TheMips64elTarget,
184                                           createMCStreamer);
185
186  // Register the asm backend.
187  TargetRegistry::RegisterMCAsmBackend(TheMipsTarget,
188                                       createMipsAsmBackendEB32);
189  TargetRegistry::RegisterMCAsmBackend(TheMipselTarget,
190                                       createMipsAsmBackendEL32);
191  TargetRegistry::RegisterMCAsmBackend(TheMips64Target,
192                                       createMipsAsmBackendEB64);
193  TargetRegistry::RegisterMCAsmBackend(TheMips64elTarget,
194                                       createMipsAsmBackendEL64);
195
196  // Register the MC subtarget info.
197  TargetRegistry::RegisterMCSubtargetInfo(TheMipsTarget,
198                                          createMipsMCSubtargetInfo);
199  TargetRegistry::RegisterMCSubtargetInfo(TheMipselTarget,
200                                          createMipsMCSubtargetInfo);
201  TargetRegistry::RegisterMCSubtargetInfo(TheMips64Target,
202                                          createMipsMCSubtargetInfo);
203  TargetRegistry::RegisterMCSubtargetInfo(TheMips64elTarget,
204                                          createMipsMCSubtargetInfo);
205
206  // Register the MCInstPrinter.
207  TargetRegistry::RegisterMCInstPrinter(TheMipsTarget,
208                                        createMipsMCInstPrinter);
209  TargetRegistry::RegisterMCInstPrinter(TheMipselTarget,
210                                        createMipsMCInstPrinter);
211  TargetRegistry::RegisterMCInstPrinter(TheMips64Target,
212                                        createMipsMCInstPrinter);
213  TargetRegistry::RegisterMCInstPrinter(TheMips64elTarget,
214                                        createMipsMCInstPrinter);
215}
216