SparcMCTargetDesc.cpp revision 263763 
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 "SparcMCAsmInfo.h"
16#include "SparcTargetStreamer.h"
17#include "InstPrinter/SparcInstPrinter.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
25#define GET_INSTRINFO_MC_DESC
26#include "SparcGenInstrInfo.inc"
27
28#define GET_SUBTARGETINFO_MC_DESC
29#include "SparcGenSubtargetInfo.inc"
30
31#define GET_REGINFO_MC_DESC
32#include "SparcGenRegisterInfo.inc"
33
34using namespace llvm;
35
36
37static MCAsmInfo *createSparcMCAsmInfo(const MCRegisterInfo &MRI,
38                                       StringRef TT) {
39  MCAsmInfo *MAI = new SparcELFMCAsmInfo(TT);
40  unsigned Reg = MRI.getDwarfRegNum(SP::O6, true);
41  MCCFIInstruction Inst = MCCFIInstruction::createDefCfa(0, Reg, 0);
42  MAI->addInitialFrameState(Inst);
43  return MAI;
44}
45
46static MCAsmInfo *createSparcV9MCAsmInfo(const MCRegisterInfo &MRI,
47                                       StringRef TT) {
48  MCAsmInfo *MAI = new SparcELFMCAsmInfo(TT);
49  unsigned Reg = MRI.getDwarfRegNum(SP::O6, true);
50  MCCFIInstruction Inst = MCCFIInstruction::createDefCfa(0, Reg, 2047);
51  MAI->addInitialFrameState(Inst);
52  return MAI;
53}
54
55static MCInstrInfo *createSparcMCInstrInfo() {
56  MCInstrInfo *X = new MCInstrInfo();
57  InitSparcMCInstrInfo(X);
58  return X;
59}
60
61static MCRegisterInfo *createSparcMCRegisterInfo(StringRef TT) {
62  MCRegisterInfo *X = new MCRegisterInfo();
63  InitSparcMCRegisterInfo(X, SP::O7);
64  return X;
65}
66
67static MCSubtargetInfo *createSparcMCSubtargetInfo(StringRef TT, StringRef CPU,
68                                                   StringRef FS) {
69  MCSubtargetInfo *X = new MCSubtargetInfo();
70  InitSparcMCSubtargetInfo(X, TT, CPU, FS);
71  return X;
72}
73
74// Code models. Some only make sense for 64-bit code.
75//
76// SunCC  Reloc   CodeModel  Constraints
77// abs32  Static  Small      text+data+bss linked below 2^32 bytes
78// abs44  Static  Medium     text+data+bss linked below 2^44 bytes
79// abs64  Static  Large      text smaller than 2^31 bytes
80// pic13  PIC_    Small      GOT < 2^13 bytes
81// pic32  PIC_    Medium     GOT < 2^32 bytes
82//
83// All code models require that the text segment is smaller than 2GB.
84
85static MCCodeGenInfo *createSparcMCCodeGenInfo(StringRef TT, Reloc::Model RM,
86                                               CodeModel::Model CM,
87                                               CodeGenOpt::Level OL) {
88  MCCodeGenInfo *X = new MCCodeGenInfo();
89
90  // The default 32-bit code model is abs32/pic32 and the default 32-bit
91  // code model for JIT is abs32.
92  switch (CM) {
93  default: break;
94  case CodeModel::Default:
95  case CodeModel::JITDefault: CM = CodeModel::Small; break;
96  }
97
98  X->InitMCCodeGenInfo(RM, CM, OL);
99  return X;
100}
101
102static MCCodeGenInfo *createSparcV9MCCodeGenInfo(StringRef TT, Reloc::Model RM,
103                                                 CodeModel::Model CM,
104                                                 CodeGenOpt::Level OL) {
105  MCCodeGenInfo *X = new MCCodeGenInfo();
106
107  // The default 64-bit code model is abs44/pic32 and the default 64-bit
108  // code model for JIT is abs64.
109  switch (CM) {
110  default:  break;
111  case CodeModel::Default:
112    CM = RM == Reloc::PIC_ ? CodeModel::Small : CodeModel::Medium;
113    break;
114  case CodeModel::JITDefault:
115    CM = CodeModel::Large;
116    break;
117  }
118
119  X->InitMCCodeGenInfo(RM, CM, OL);
120  return X;
121}
122
123static MCStreamer *createMCStreamer(const Target &T, StringRef TT,
124                                    MCContext &Context, MCAsmBackend &MAB,
125                                    raw_ostream &OS, MCCodeEmitter *Emitter,
126                                    bool RelaxAll, bool NoExecStack) {
127  SparcTargetELFStreamer *S = new SparcTargetELFStreamer();
128  return createELFStreamer(Context, S, MAB, OS, Emitter, RelaxAll, NoExecStack);
129}
130
131static MCStreamer *
132createMCAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS,
133                    bool isVerboseAsm, bool useLoc, bool useCFI,
134                    bool useDwarfDirectory, MCInstPrinter *InstPrint,
135                    MCCodeEmitter *CE, MCAsmBackend *TAB, bool ShowInst) {
136  SparcTargetAsmStreamer *S = new SparcTargetAsmStreamer(OS);
137
138  return llvm::createAsmStreamer(Ctx, S, OS, isVerboseAsm, useLoc, useCFI,
139                                 useDwarfDirectory, InstPrint, CE, TAB,
140                                 ShowInst);
141}
142
143static MCInstPrinter *createSparcMCInstPrinter(const Target &T,
144                                              unsigned SyntaxVariant,
145                                              const MCAsmInfo &MAI,
146                                              const MCInstrInfo &MII,
147                                              const MCRegisterInfo &MRI,
148                                              const MCSubtargetInfo &STI) {
149  return new SparcInstPrinter(MAI, MII, MRI);
150}
151
152extern "C" void LLVMInitializeSparcTargetMC() {
153  // Register the MC asm info.
154  RegisterMCAsmInfoFn X(TheSparcTarget, createSparcMCAsmInfo);
155  RegisterMCAsmInfoFn Y(TheSparcV9Target, createSparcV9MCAsmInfo);
156
157  // Register the MC codegen info.
158  TargetRegistry::RegisterMCCodeGenInfo(TheSparcTarget,
159                                       createSparcMCCodeGenInfo);
160  TargetRegistry::RegisterMCCodeGenInfo(TheSparcV9Target,
161                                       createSparcV9MCCodeGenInfo);
162
163  // Register the MC instruction info.
164  TargetRegistry::RegisterMCInstrInfo(TheSparcTarget, createSparcMCInstrInfo);
165  TargetRegistry::RegisterMCInstrInfo(TheSparcV9Target, createSparcMCInstrInfo);
166
167  // Register the MC register info.
168  TargetRegistry::RegisterMCRegInfo(TheSparcTarget, createSparcMCRegisterInfo);
169  TargetRegistry::RegisterMCRegInfo(TheSparcV9Target,
170                                    createSparcMCRegisterInfo);
171
172  // Register the MC subtarget info.
173  TargetRegistry::RegisterMCSubtargetInfo(TheSparcTarget,
174                                          createSparcMCSubtargetInfo);
175  TargetRegistry::RegisterMCSubtargetInfo(TheSparcV9Target,
176                                          createSparcMCSubtargetInfo);
177
178  // Register the MC Code Emitter.
179  TargetRegistry::RegisterMCCodeEmitter(TheSparcTarget,
180                                        createSparcMCCodeEmitter);
181  TargetRegistry::RegisterMCCodeEmitter(TheSparcV9Target,
182                                        createSparcMCCodeEmitter);
183
184  //Register the asm backend.
185  TargetRegistry::RegisterMCAsmBackend(TheSparcTarget,
186                                       createSparcAsmBackend);
187  TargetRegistry::RegisterMCAsmBackend(TheSparcV9Target,
188                                       createSparcAsmBackend);
189
190  // Register the object streamer.
191  TargetRegistry::RegisterMCObjectStreamer(TheSparcTarget,
192                                           createMCStreamer);
193  TargetRegistry::RegisterMCObjectStreamer(TheSparcV9Target,
194                                           createMCStreamer);
195
196  // Register the asm streamer.
197  TargetRegistry::RegisterAsmStreamer(TheSparcTarget,
198                                      createMCAsmStreamer);
199  TargetRegistry::RegisterAsmStreamer(TheSparcV9Target,
200                                      createMCAsmStreamer);
201
202  // Register the MCInstPrinter
203  TargetRegistry::RegisterMCInstPrinter(TheSparcTarget,
204                                        createSparcMCInstPrinter);
205  TargetRegistry::RegisterMCInstPrinter(TheSparcV9Target,
206                                        createSparcMCInstPrinter);
207}
208