SparcMCTargetDesc.cpp revision 280031 
1//===-- SparcMCTargetDesc.cpp - Sparc 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 Sparc specific target descriptions.
11//
12//===----------------------------------------------------------------------===//
13
14#include "SparcMCTargetDesc.h"
15#include "InstPrinter/SparcInstPrinter.h"
16#include "SparcMCAsmInfo.h"
17#include "SparcTargetStreamer.h"
18#include "llvm/MC/MCCodeGenInfo.h"
19#include "llvm/MC/MCInstrInfo.h"
20#include "llvm/MC/MCRegisterInfo.h"
21#include "llvm/MC/MCSubtargetInfo.h"
22#include "llvm/Support/ErrorHandling.h"
23#include "llvm/Support/TargetRegistry.h"
24
25using namespace llvm;
26
27#define GET_INSTRINFO_MC_DESC
28#include "SparcGenInstrInfo.inc"
29
30#define GET_SUBTARGETINFO_MC_DESC
31#include "SparcGenSubtargetInfo.inc"
32
33#define GET_REGINFO_MC_DESC
34#include "SparcGenRegisterInfo.inc"
35
36static MCAsmInfo *createSparcMCAsmInfo(const MCRegisterInfo &MRI,
37                                       StringRef TT) {
38  MCAsmInfo *MAI = new SparcELFMCAsmInfo(TT);
39  unsigned Reg = MRI.getDwarfRegNum(SP::O6, true);
40  MCCFIInstruction Inst = MCCFIInstruction::createDefCfa(nullptr, Reg, 0);
41  MAI->addInitialFrameState(Inst);
42  return MAI;
43}
44
45static MCAsmInfo *createSparcV9MCAsmInfo(const MCRegisterInfo &MRI,
46                                       StringRef TT) {
47  MCAsmInfo *MAI = new SparcELFMCAsmInfo(TT);
48  unsigned Reg = MRI.getDwarfRegNum(SP::O6, true);
49  MCCFIInstruction Inst = MCCFIInstruction::createDefCfa(nullptr, Reg, 2047);
50  MAI->addInitialFrameState(Inst);
51  return MAI;
52}
53
54static MCInstrInfo *createSparcMCInstrInfo() {
55  MCInstrInfo *X = new MCInstrInfo();
56  InitSparcMCInstrInfo(X);
57  return X;
58}
59
60static MCRegisterInfo *createSparcMCRegisterInfo(StringRef TT) {
61  MCRegisterInfo *X = new MCRegisterInfo();
62  InitSparcMCRegisterInfo(X, SP::O7);
63  return X;
64}
65
66static MCSubtargetInfo *createSparcMCSubtargetInfo(StringRef TT, StringRef CPU,
67                                                   StringRef FS) {
68  MCSubtargetInfo *X = new MCSubtargetInfo();
69  Triple TheTriple(TT);
70  if (CPU.empty())
71    CPU = (TheTriple.getArch() == Triple::sparcv9) ? "v9" : "v8";
72  InitSparcMCSubtargetInfo(X, TT, CPU, FS);
73  return X;
74}
75
76// Code models. Some only make sense for 64-bit code.
77//
78// SunCC  Reloc   CodeModel  Constraints
79// abs32  Static  Small      text+data+bss linked below 2^32 bytes
80// abs44  Static  Medium     text+data+bss linked below 2^44 bytes
81// abs64  Static  Large      text smaller than 2^31 bytes
82// pic13  PIC_    Small      GOT < 2^13 bytes
83// pic32  PIC_    Medium     GOT < 2^32 bytes
84//
85// All code models require that the text segment is smaller than 2GB.
86
87static MCCodeGenInfo *createSparcMCCodeGenInfo(StringRef TT, Reloc::Model RM,
88                                               CodeModel::Model CM,
89                                               CodeGenOpt::Level OL) {
90  MCCodeGenInfo *X = new MCCodeGenInfo();
91
92  // The default 32-bit code model is abs32/pic32 and the default 32-bit
93  // code model for JIT is abs32.
94  switch (CM) {
95  default: break;
96  case CodeModel::Default:
97  case CodeModel::JITDefault: CM = CodeModel::Small; break;
98  }
99
100  X->InitMCCodeGenInfo(RM, CM, OL);
101  return X;
102}
103
104static MCCodeGenInfo *createSparcV9MCCodeGenInfo(StringRef TT, Reloc::Model RM,
105                                                 CodeModel::Model CM,
106                                                 CodeGenOpt::Level OL) {
107  MCCodeGenInfo *X = new MCCodeGenInfo();
108
109  // The default 64-bit code model is abs44/pic32 and the default 64-bit
110  // code model for JIT is abs64.
111  switch (CM) {
112  default:  break;
113  case CodeModel::Default:
114    CM = RM == Reloc::PIC_ ? CodeModel::Small : CodeModel::Medium;
115    break;
116  case CodeModel::JITDefault:
117    CM = CodeModel::Large;
118    break;
119  }
120
121  X->InitMCCodeGenInfo(RM, CM, OL);
122  return X;
123}
124
125static MCStreamer *createMCStreamer(const Target &T, StringRef TT,
126                                    MCContext &Context, MCAsmBackend &MAB,
127                                    raw_ostream &OS, MCCodeEmitter *Emitter,
128                                    const MCSubtargetInfo &STI, bool RelaxAll) {
129  MCStreamer *S = createELFStreamer(Context, MAB, OS, Emitter, RelaxAll);
130  new SparcTargetELFStreamer(*S);
131  return S;
132}
133
134static MCStreamer *
135createMCAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS,
136                    bool isVerboseAsm, bool useDwarfDirectory,
137                    MCInstPrinter *InstPrint, MCCodeEmitter *CE,
138                    MCAsmBackend *TAB, bool ShowInst) {
139
140  MCStreamer *S = llvm::createAsmStreamer(
141      Ctx, OS, isVerboseAsm, useDwarfDirectory, InstPrint, CE, TAB, ShowInst);
142  new SparcTargetAsmStreamer(*S, OS);
143  return S;
144}
145
146static MCInstPrinter *createSparcMCInstPrinter(const Target &T,
147                                              unsigned SyntaxVariant,
148                                              const MCAsmInfo &MAI,
149                                              const MCInstrInfo &MII,
150                                              const MCRegisterInfo &MRI,
151                                              const MCSubtargetInfo &STI) {
152  return new SparcInstPrinter(MAI, MII, MRI, STI);
153}
154
155extern "C" void LLVMInitializeSparcTargetMC() {
156  // Register the MC asm info.
157  RegisterMCAsmInfoFn X(TheSparcTarget, createSparcMCAsmInfo);
158  RegisterMCAsmInfoFn Y(TheSparcV9Target, createSparcV9MCAsmInfo);
159
160  // Register the MC codegen info.
161  TargetRegistry::RegisterMCCodeGenInfo(TheSparcTarget,
162                                       createSparcMCCodeGenInfo);
163  TargetRegistry::RegisterMCCodeGenInfo(TheSparcV9Target,
164                                       createSparcV9MCCodeGenInfo);
165
166  // Register the MC instruction info.
167  TargetRegistry::RegisterMCInstrInfo(TheSparcTarget, createSparcMCInstrInfo);
168  TargetRegistry::RegisterMCInstrInfo(TheSparcV9Target, createSparcMCInstrInfo);
169
170  // Register the MC register info.
171  TargetRegistry::RegisterMCRegInfo(TheSparcTarget, createSparcMCRegisterInfo);
172  TargetRegistry::RegisterMCRegInfo(TheSparcV9Target,
173                                    createSparcMCRegisterInfo);
174
175  // Register the MC subtarget info.
176  TargetRegistry::RegisterMCSubtargetInfo(TheSparcTarget,
177                                          createSparcMCSubtargetInfo);
178  TargetRegistry::RegisterMCSubtargetInfo(TheSparcV9Target,
179                                          createSparcMCSubtargetInfo);
180
181  // Register the MC Code Emitter.
182  TargetRegistry::RegisterMCCodeEmitter(TheSparcTarget,
183                                        createSparcMCCodeEmitter);
184  TargetRegistry::RegisterMCCodeEmitter(TheSparcV9Target,
185                                        createSparcMCCodeEmitter);
186
187  //Register the asm backend.
188  TargetRegistry::RegisterMCAsmBackend(TheSparcTarget,
189                                       createSparcAsmBackend);
190  TargetRegistry::RegisterMCAsmBackend(TheSparcV9Target,
191                                       createSparcAsmBackend);
192
193  // Register the object streamer.
194  TargetRegistry::RegisterMCObjectStreamer(TheSparcTarget,
195                                           createMCStreamer);
196  TargetRegistry::RegisterMCObjectStreamer(TheSparcV9Target,
197                                           createMCStreamer);
198
199  // Register the asm streamer.
200  TargetRegistry::RegisterAsmStreamer(TheSparcTarget,
201                                      createMCAsmStreamer);
202  TargetRegistry::RegisterAsmStreamer(TheSparcV9Target,
203                                      createMCAsmStreamer);
204
205  // Register the MCInstPrinter
206  TargetRegistry::RegisterMCInstPrinter(TheSparcTarget,
207                                        createSparcMCInstPrinter);
208  TargetRegistry::RegisterMCInstPrinter(TheSparcV9Target,
209                                        createSparcMCInstPrinter);
210}
211