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
25 using 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
createSparcMCAsmInfo(const MCRegisterInfo & MRI,StringRef TT)36 static 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
createSparcV9MCAsmInfo(const MCRegisterInfo & MRI,StringRef TT)45 static 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
createSparcMCInstrInfo()54 static MCInstrInfo *createSparcMCInstrInfo() {
55 MCInstrInfo *X = new MCInstrInfo();
56 InitSparcMCInstrInfo(X);
57 return X;
58 }
59
createSparcMCRegisterInfo(StringRef TT)60 static MCRegisterInfo *createSparcMCRegisterInfo(StringRef TT) {
61 MCRegisterInfo *X = new MCRegisterInfo();
62 InitSparcMCRegisterInfo(X, SP::O7);
63 return X;
64 }
65
createSparcMCSubtargetInfo(StringRef TT,StringRef CPU,StringRef FS)66 static 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
createSparcMCCodeGenInfo(StringRef TT,Reloc::Model RM,CodeModel::Model CM,CodeGenOpt::Level OL)87 static 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
createSparcV9MCCodeGenInfo(StringRef TT,Reloc::Model RM,CodeModel::Model CM,CodeGenOpt::Level OL)104 static 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
125 static MCTargetStreamer *
createObjectTargetStreamer(MCStreamer & S,const MCSubtargetInfo & STI)126 createObjectTargetStreamer(MCStreamer &S, const MCSubtargetInfo &STI) {
127 return new SparcTargetELFStreamer(S);
128 }
129
createTargetAsmStreamer(MCStreamer & S,formatted_raw_ostream & OS,MCInstPrinter * InstPrint,bool isVerboseAsm)130 static MCTargetStreamer *createTargetAsmStreamer(MCStreamer &S,
131 formatted_raw_ostream &OS,
132 MCInstPrinter *InstPrint,
133 bool isVerboseAsm) {
134 return new SparcTargetAsmStreamer(S, OS);
135 }
136
createSparcMCInstPrinter(const Triple & T,unsigned SyntaxVariant,const MCAsmInfo & MAI,const MCInstrInfo & MII,const MCRegisterInfo & MRI)137 static MCInstPrinter *createSparcMCInstPrinter(const Triple &T,
138 unsigned SyntaxVariant,
139 const MCAsmInfo &MAI,
140 const MCInstrInfo &MII,
141 const MCRegisterInfo &MRI) {
142 return new SparcInstPrinter(MAI, MII, MRI);
143 }
144
LLVMInitializeSparcTargetMC()145 extern "C" void LLVMInitializeSparcTargetMC() {
146 // Register the MC asm info.
147 RegisterMCAsmInfoFn X(TheSparcTarget, createSparcMCAsmInfo);
148 RegisterMCAsmInfoFn Y(TheSparcV9Target, createSparcV9MCAsmInfo);
149
150 for (Target *T : {&TheSparcTarget, &TheSparcV9Target}) {
151 // Register the MC instruction info.
152 TargetRegistry::RegisterMCInstrInfo(*T, createSparcMCInstrInfo);
153
154 // Register the MC register info.
155 TargetRegistry::RegisterMCRegInfo(*T, createSparcMCRegisterInfo);
156
157 // Register the MC subtarget info.
158 TargetRegistry::RegisterMCSubtargetInfo(*T, createSparcMCSubtargetInfo);
159
160 // Register the MC Code Emitter.
161 TargetRegistry::RegisterMCCodeEmitter(*T, createSparcMCCodeEmitter);
162
163 // Register the asm backend.
164 TargetRegistry::RegisterMCAsmBackend(*T, createSparcAsmBackend);
165
166 // Register the object target streamer.
167 TargetRegistry::RegisterObjectTargetStreamer(*T,
168 createObjectTargetStreamer);
169
170 // Register the asm streamer.
171 TargetRegistry::RegisterAsmTargetStreamer(*T, createTargetAsmStreamer);
172
173 // Register the MCInstPrinter
174 TargetRegistry::RegisterMCInstPrinter(*T, createSparcMCInstPrinter);
175 }
176
177 // Register the MC codegen info.
178 TargetRegistry::RegisterMCCodeGenInfo(TheSparcTarget,
179 createSparcMCCodeGenInfo);
180 TargetRegistry::RegisterMCCodeGenInfo(TheSparcV9Target,
181 createSparcV9MCCodeGenInfo);
182
183 }
184