1 //===-- SystemZMCTargetDesc.cpp - SystemZ target descriptions -------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "SystemZMCTargetDesc.h"
10 #include "SystemZInstPrinter.h"
11 #include "SystemZMCAsmInfo.h"
12 #include "SystemZTargetStreamer.h"
13 #include "TargetInfo/SystemZTargetInfo.h"
14 #include "llvm/MC/MCContext.h"
15 #include "llvm/MC/MCDwarf.h"
16 #include "llvm/MC/MCInst.h"
17 #include "llvm/MC/MCInstrInfo.h"
18 #include "llvm/MC/MCRegisterInfo.h"
19 #include "llvm/MC/MCStreamer.h"
20 #include "llvm/MC/MCSubtargetInfo.h"
21 #include "llvm/MC/TargetRegistry.h"
22
23 using namespace llvm;
24
25 #define GET_INSTRINFO_MC_DESC
26 #define ENABLE_INSTR_PREDICATE_VERIFIER
27 #include "SystemZGenInstrInfo.inc"
28
29 #define GET_SUBTARGETINFO_MC_DESC
30 #include "SystemZGenSubtargetInfo.inc"
31
32 #define GET_REGINFO_MC_DESC
33 #include "SystemZGenRegisterInfo.inc"
34
35 const unsigned SystemZMC::GR32Regs[16] = {
36 SystemZ::R0L, SystemZ::R1L, SystemZ::R2L, SystemZ::R3L,
37 SystemZ::R4L, SystemZ::R5L, SystemZ::R6L, SystemZ::R7L,
38 SystemZ::R8L, SystemZ::R9L, SystemZ::R10L, SystemZ::R11L,
39 SystemZ::R12L, SystemZ::R13L, SystemZ::R14L, SystemZ::R15L
40 };
41
42 const unsigned SystemZMC::GRH32Regs[16] = {
43 SystemZ::R0H, SystemZ::R1H, SystemZ::R2H, SystemZ::R3H,
44 SystemZ::R4H, SystemZ::R5H, SystemZ::R6H, SystemZ::R7H,
45 SystemZ::R8H, SystemZ::R9H, SystemZ::R10H, SystemZ::R11H,
46 SystemZ::R12H, SystemZ::R13H, SystemZ::R14H, SystemZ::R15H
47 };
48
49 const unsigned SystemZMC::GR64Regs[16] = {
50 SystemZ::R0D, SystemZ::R1D, SystemZ::R2D, SystemZ::R3D,
51 SystemZ::R4D, SystemZ::R5D, SystemZ::R6D, SystemZ::R7D,
52 SystemZ::R8D, SystemZ::R9D, SystemZ::R10D, SystemZ::R11D,
53 SystemZ::R12D, SystemZ::R13D, SystemZ::R14D, SystemZ::R15D
54 };
55
56 const unsigned SystemZMC::GR128Regs[16] = {
57 SystemZ::R0Q, 0, SystemZ::R2Q, 0,
58 SystemZ::R4Q, 0, SystemZ::R6Q, 0,
59 SystemZ::R8Q, 0, SystemZ::R10Q, 0,
60 SystemZ::R12Q, 0, SystemZ::R14Q, 0
61 };
62
63 const unsigned SystemZMC::FP32Regs[16] = {
64 SystemZ::F0S, SystemZ::F1S, SystemZ::F2S, SystemZ::F3S,
65 SystemZ::F4S, SystemZ::F5S, SystemZ::F6S, SystemZ::F7S,
66 SystemZ::F8S, SystemZ::F9S, SystemZ::F10S, SystemZ::F11S,
67 SystemZ::F12S, SystemZ::F13S, SystemZ::F14S, SystemZ::F15S
68 };
69
70 const unsigned SystemZMC::FP64Regs[16] = {
71 SystemZ::F0D, SystemZ::F1D, SystemZ::F2D, SystemZ::F3D,
72 SystemZ::F4D, SystemZ::F5D, SystemZ::F6D, SystemZ::F7D,
73 SystemZ::F8D, SystemZ::F9D, SystemZ::F10D, SystemZ::F11D,
74 SystemZ::F12D, SystemZ::F13D, SystemZ::F14D, SystemZ::F15D
75 };
76
77 const unsigned SystemZMC::FP128Regs[16] = {
78 SystemZ::F0Q, SystemZ::F1Q, 0, 0,
79 SystemZ::F4Q, SystemZ::F5Q, 0, 0,
80 SystemZ::F8Q, SystemZ::F9Q, 0, 0,
81 SystemZ::F12Q, SystemZ::F13Q, 0, 0
82 };
83
84 const unsigned SystemZMC::VR32Regs[32] = {
85 SystemZ::F0S, SystemZ::F1S, SystemZ::F2S, SystemZ::F3S,
86 SystemZ::F4S, SystemZ::F5S, SystemZ::F6S, SystemZ::F7S,
87 SystemZ::F8S, SystemZ::F9S, SystemZ::F10S, SystemZ::F11S,
88 SystemZ::F12S, SystemZ::F13S, SystemZ::F14S, SystemZ::F15S,
89 SystemZ::F16S, SystemZ::F17S, SystemZ::F18S, SystemZ::F19S,
90 SystemZ::F20S, SystemZ::F21S, SystemZ::F22S, SystemZ::F23S,
91 SystemZ::F24S, SystemZ::F25S, SystemZ::F26S, SystemZ::F27S,
92 SystemZ::F28S, SystemZ::F29S, SystemZ::F30S, SystemZ::F31S
93 };
94
95 const unsigned SystemZMC::VR64Regs[32] = {
96 SystemZ::F0D, SystemZ::F1D, SystemZ::F2D, SystemZ::F3D,
97 SystemZ::F4D, SystemZ::F5D, SystemZ::F6D, SystemZ::F7D,
98 SystemZ::F8D, SystemZ::F9D, SystemZ::F10D, SystemZ::F11D,
99 SystemZ::F12D, SystemZ::F13D, SystemZ::F14D, SystemZ::F15D,
100 SystemZ::F16D, SystemZ::F17D, SystemZ::F18D, SystemZ::F19D,
101 SystemZ::F20D, SystemZ::F21D, SystemZ::F22D, SystemZ::F23D,
102 SystemZ::F24D, SystemZ::F25D, SystemZ::F26D, SystemZ::F27D,
103 SystemZ::F28D, SystemZ::F29D, SystemZ::F30D, SystemZ::F31D
104 };
105
106 const unsigned SystemZMC::VR128Regs[32] = {
107 SystemZ::V0, SystemZ::V1, SystemZ::V2, SystemZ::V3,
108 SystemZ::V4, SystemZ::V5, SystemZ::V6, SystemZ::V7,
109 SystemZ::V8, SystemZ::V9, SystemZ::V10, SystemZ::V11,
110 SystemZ::V12, SystemZ::V13, SystemZ::V14, SystemZ::V15,
111 SystemZ::V16, SystemZ::V17, SystemZ::V18, SystemZ::V19,
112 SystemZ::V20, SystemZ::V21, SystemZ::V22, SystemZ::V23,
113 SystemZ::V24, SystemZ::V25, SystemZ::V26, SystemZ::V27,
114 SystemZ::V28, SystemZ::V29, SystemZ::V30, SystemZ::V31
115 };
116
117 const unsigned SystemZMC::AR32Regs[16] = {
118 SystemZ::A0, SystemZ::A1, SystemZ::A2, SystemZ::A3,
119 SystemZ::A4, SystemZ::A5, SystemZ::A6, SystemZ::A7,
120 SystemZ::A8, SystemZ::A9, SystemZ::A10, SystemZ::A11,
121 SystemZ::A12, SystemZ::A13, SystemZ::A14, SystemZ::A15
122 };
123
124 const unsigned SystemZMC::CR64Regs[16] = {
125 SystemZ::C0, SystemZ::C1, SystemZ::C2, SystemZ::C3,
126 SystemZ::C4, SystemZ::C5, SystemZ::C6, SystemZ::C7,
127 SystemZ::C8, SystemZ::C9, SystemZ::C10, SystemZ::C11,
128 SystemZ::C12, SystemZ::C13, SystemZ::C14, SystemZ::C15
129 };
130
getFirstReg(unsigned Reg)131 unsigned SystemZMC::getFirstReg(unsigned Reg) {
132 static unsigned Map[SystemZ::NUM_TARGET_REGS];
133 static bool Initialized = false;
134 if (!Initialized) {
135 for (unsigned I = 0; I < 16; ++I) {
136 Map[GR32Regs[I]] = I;
137 Map[GRH32Regs[I]] = I;
138 Map[GR64Regs[I]] = I;
139 Map[GR128Regs[I]] = I;
140 Map[FP128Regs[I]] = I;
141 Map[AR32Regs[I]] = I;
142 }
143 for (unsigned I = 0; I < 32; ++I) {
144 Map[VR32Regs[I]] = I;
145 Map[VR64Regs[I]] = I;
146 Map[VR128Regs[I]] = I;
147 }
148 }
149 assert(Reg < SystemZ::NUM_TARGET_REGS);
150 return Map[Reg];
151 }
152
createSystemZMCAsmInfo(const MCRegisterInfo & MRI,const Triple & TT,const MCTargetOptions & Options)153 static MCAsmInfo *createSystemZMCAsmInfo(const MCRegisterInfo &MRI,
154 const Triple &TT,
155 const MCTargetOptions &Options) {
156 if (TT.isOSzOS())
157 return new SystemZMCAsmInfoGOFF(TT);
158
159 MCAsmInfo *MAI = new SystemZMCAsmInfoELF(TT);
160 MCCFIInstruction Inst = MCCFIInstruction::cfiDefCfa(
161 nullptr, MRI.getDwarfRegNum(SystemZ::R15D, true),
162 SystemZMC::ELFCFAOffsetFromInitialSP);
163 MAI->addInitialFrameState(Inst);
164 return MAI;
165 }
166
createSystemZMCInstrInfo()167 static MCInstrInfo *createSystemZMCInstrInfo() {
168 MCInstrInfo *X = new MCInstrInfo();
169 InitSystemZMCInstrInfo(X);
170 return X;
171 }
172
createSystemZMCRegisterInfo(const Triple & TT)173 static MCRegisterInfo *createSystemZMCRegisterInfo(const Triple &TT) {
174 MCRegisterInfo *X = new MCRegisterInfo();
175 InitSystemZMCRegisterInfo(X, SystemZ::R14D);
176 return X;
177 }
178
179 static MCSubtargetInfo *
createSystemZMCSubtargetInfo(const Triple & TT,StringRef CPU,StringRef FS)180 createSystemZMCSubtargetInfo(const Triple &TT, StringRef CPU, StringRef FS) {
181 return createSystemZMCSubtargetInfoImpl(TT, CPU, /*TuneCPU*/ CPU, FS);
182 }
183
createSystemZMCInstPrinter(const Triple & T,unsigned SyntaxVariant,const MCAsmInfo & MAI,const MCInstrInfo & MII,const MCRegisterInfo & MRI)184 static MCInstPrinter *createSystemZMCInstPrinter(const Triple &T,
185 unsigned SyntaxVariant,
186 const MCAsmInfo &MAI,
187 const MCInstrInfo &MII,
188 const MCRegisterInfo &MRI) {
189 return new SystemZInstPrinter(MAI, MII, MRI);
190 }
191
emitConstantPools()192 void SystemZTargetStreamer::emitConstantPools() {
193 // Emit EXRL target instructions.
194 if (EXRLTargets2Sym.empty())
195 return;
196 // Switch to the .text section.
197 const MCObjectFileInfo &OFI = *Streamer.getContext().getObjectFileInfo();
198 Streamer.switchSection(OFI.getTextSection());
199 for (auto &I : EXRLTargets2Sym) {
200 Streamer.emitLabel(I.second);
201 const MCInstSTIPair &MCI_STI = I.first;
202 Streamer.emitInstruction(MCI_STI.first, *MCI_STI.second);
203 }
204 EXRLTargets2Sym.clear();
205 }
206
207 namespace {
208 class SystemZTargetAsmStreamer : public SystemZTargetStreamer {
209 formatted_raw_ostream &OS;
210
211 public:
SystemZTargetAsmStreamer(MCStreamer & S,formatted_raw_ostream & OS)212 SystemZTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS)
213 : SystemZTargetStreamer(S), OS(OS) {}
emitMachine(StringRef CPU)214 void emitMachine(StringRef CPU) override {
215 OS << "\t.machine " << CPU << "\n";
216 }
217 };
218
219 class SystemZTargetELFStreamer : public SystemZTargetStreamer {
220 public:
SystemZTargetELFStreamer(MCStreamer & S)221 SystemZTargetELFStreamer(MCStreamer &S) : SystemZTargetStreamer(S) {}
emitMachine(StringRef CPU)222 void emitMachine(StringRef CPU) override {}
223 };
224 } // end namespace
225
createAsmTargetStreamer(MCStreamer & S,formatted_raw_ostream & OS,MCInstPrinter * InstPrint)226 static MCTargetStreamer *createAsmTargetStreamer(MCStreamer &S,
227 formatted_raw_ostream &OS,
228 MCInstPrinter *InstPrint) {
229 return new SystemZTargetAsmStreamer(S, OS);
230 }
231
232 static MCTargetStreamer *
createObjectTargetStreamer(MCStreamer & S,const MCSubtargetInfo & STI)233 createObjectTargetStreamer(MCStreamer &S, const MCSubtargetInfo &STI) {
234 return new SystemZTargetELFStreamer(S);
235 }
236
237 static MCTargetStreamer *
createNullTargetStreamer(MCStreamer & S)238 createNullTargetStreamer(MCStreamer &S) {
239 return new SystemZTargetStreamer(S);
240 }
241
LLVMInitializeSystemZTargetMC()242 extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeSystemZTargetMC() {
243 // Register the MCAsmInfo.
244 TargetRegistry::RegisterMCAsmInfo(getTheSystemZTarget(),
245 createSystemZMCAsmInfo);
246
247 // Register the MCCodeEmitter.
248 TargetRegistry::RegisterMCCodeEmitter(getTheSystemZTarget(),
249 createSystemZMCCodeEmitter);
250
251 // Register the MCInstrInfo.
252 TargetRegistry::RegisterMCInstrInfo(getTheSystemZTarget(),
253 createSystemZMCInstrInfo);
254
255 // Register the MCRegisterInfo.
256 TargetRegistry::RegisterMCRegInfo(getTheSystemZTarget(),
257 createSystemZMCRegisterInfo);
258
259 // Register the MCSubtargetInfo.
260 TargetRegistry::RegisterMCSubtargetInfo(getTheSystemZTarget(),
261 createSystemZMCSubtargetInfo);
262
263 // Register the MCAsmBackend.
264 TargetRegistry::RegisterMCAsmBackend(getTheSystemZTarget(),
265 createSystemZMCAsmBackend);
266
267 // Register the MCInstPrinter.
268 TargetRegistry::RegisterMCInstPrinter(getTheSystemZTarget(),
269 createSystemZMCInstPrinter);
270
271 // Register the asm streamer.
272 TargetRegistry::RegisterAsmTargetStreamer(getTheSystemZTarget(),
273 createAsmTargetStreamer);
274
275 // Register the obj streamer
276 TargetRegistry::RegisterObjectTargetStreamer(getTheSystemZTarget(),
277 createObjectTargetStreamer);
278
279 // Register the null streamer
280 TargetRegistry::RegisterNullTargetStreamer(getTheSystemZTarget(),
281 createNullTargetStreamer);
282 }
283