1 //===-- PPCMCTargetDesc.cpp - PowerPC 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 PowerPC specific target descriptions.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "PPCMCTargetDesc.h"
15 #include "InstPrinter/PPCInstPrinter.h"
16 #include "PPCMCAsmInfo.h"
17 #include "PPCTargetStreamer.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/MCSymbol.h"
24 #include "llvm/MC/MachineLocation.h"
25 #include "llvm/Support/ErrorHandling.h"
26 #include "llvm/Support/FormattedStream.h"
27 #include "llvm/Support/TargetRegistry.h"
28
29 using namespace llvm;
30
31 #define GET_INSTRINFO_MC_DESC
32 #include "PPCGenInstrInfo.inc"
33
34 #define GET_SUBTARGETINFO_MC_DESC
35 #include "PPCGenSubtargetInfo.inc"
36
37 #define GET_REGINFO_MC_DESC
38 #include "PPCGenRegisterInfo.inc"
39
40 // Pin the vtable to this file.
~PPCTargetStreamer()41 PPCTargetStreamer::~PPCTargetStreamer() {}
PPCTargetStreamer(MCStreamer & S)42 PPCTargetStreamer::PPCTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
43
createPPCMCInstrInfo()44 static MCInstrInfo *createPPCMCInstrInfo() {
45 MCInstrInfo *X = new MCInstrInfo();
46 InitPPCMCInstrInfo(X);
47 return X;
48 }
49
createPPCMCRegisterInfo(StringRef TT)50 static MCRegisterInfo *createPPCMCRegisterInfo(StringRef TT) {
51 Triple TheTriple(TT);
52 bool isPPC64 = (TheTriple.getArch() == Triple::ppc64 ||
53 TheTriple.getArch() == Triple::ppc64le);
54 unsigned Flavour = isPPC64 ? 0 : 1;
55 unsigned RA = isPPC64 ? PPC::LR8 : PPC::LR;
56
57 MCRegisterInfo *X = new MCRegisterInfo();
58 InitPPCMCRegisterInfo(X, RA, Flavour, Flavour);
59 return X;
60 }
61
createPPCMCSubtargetInfo(StringRef TT,StringRef CPU,StringRef FS)62 static MCSubtargetInfo *createPPCMCSubtargetInfo(StringRef TT, StringRef CPU,
63 StringRef FS) {
64 MCSubtargetInfo *X = new MCSubtargetInfo();
65 InitPPCMCSubtargetInfo(X, TT, CPU, FS);
66 return X;
67 }
68
createPPCMCAsmInfo(const MCRegisterInfo & MRI,StringRef TT)69 static MCAsmInfo *createPPCMCAsmInfo(const MCRegisterInfo &MRI, StringRef TT) {
70 Triple TheTriple(TT);
71 bool isPPC64 = (TheTriple.getArch() == Triple::ppc64 ||
72 TheTriple.getArch() == Triple::ppc64le);
73
74 MCAsmInfo *MAI;
75 if (TheTriple.isOSDarwin())
76 MAI = new PPCMCAsmInfoDarwin(isPPC64, TheTriple);
77 else
78 MAI = new PPCLinuxMCAsmInfo(isPPC64, TheTriple);
79
80 // Initial state of the frame pointer is R1.
81 unsigned Reg = isPPC64 ? PPC::X1 : PPC::R1;
82 MCCFIInstruction Inst =
83 MCCFIInstruction::createDefCfa(nullptr, MRI.getDwarfRegNum(Reg, true), 0);
84 MAI->addInitialFrameState(Inst);
85
86 return MAI;
87 }
88
createPPCMCCodeGenInfo(StringRef TT,Reloc::Model RM,CodeModel::Model CM,CodeGenOpt::Level OL)89 static MCCodeGenInfo *createPPCMCCodeGenInfo(StringRef TT, Reloc::Model RM,
90 CodeModel::Model CM,
91 CodeGenOpt::Level OL) {
92 MCCodeGenInfo *X = new MCCodeGenInfo();
93
94 if (RM == Reloc::Default) {
95 Triple T(TT);
96 if (T.isOSDarwin())
97 RM = Reloc::DynamicNoPIC;
98 else
99 RM = Reloc::Static;
100 }
101 if (CM == CodeModel::Default) {
102 Triple T(TT);
103 if (!T.isOSDarwin() &&
104 (T.getArch() == Triple::ppc64 || T.getArch() == Triple::ppc64le))
105 CM = CodeModel::Medium;
106 }
107 X->InitMCCodeGenInfo(RM, CM, OL);
108 return X;
109 }
110
111 namespace {
112 class PPCTargetAsmStreamer : public PPCTargetStreamer {
113 formatted_raw_ostream &OS;
114
115 public:
PPCTargetAsmStreamer(MCStreamer & S,formatted_raw_ostream & OS)116 PPCTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS)
117 : PPCTargetStreamer(S), OS(OS) {}
emitTCEntry(const MCSymbol & S)118 void emitTCEntry(const MCSymbol &S) override {
119 OS << "\t.tc ";
120 OS << S.getName();
121 OS << "[TC],";
122 OS << S.getName();
123 OS << '\n';
124 }
emitMachine(StringRef CPU)125 void emitMachine(StringRef CPU) override {
126 OS << "\t.machine " << CPU << '\n';
127 }
128 };
129
130 class PPCTargetELFStreamer : public PPCTargetStreamer {
131 public:
PPCTargetELFStreamer(MCStreamer & S)132 PPCTargetELFStreamer(MCStreamer &S) : PPCTargetStreamer(S) {}
emitTCEntry(const MCSymbol & S)133 void emitTCEntry(const MCSymbol &S) override {
134 // Creates a R_PPC64_TOC relocation
135 Streamer.EmitSymbolValue(&S, 8);
136 }
emitMachine(StringRef CPU)137 void emitMachine(StringRef CPU) override {
138 // FIXME: Is there anything to do in here or does this directive only
139 // limit the parser?
140 }
141 };
142
143 class PPCTargetMachOStreamer : public PPCTargetStreamer {
144 public:
PPCTargetMachOStreamer(MCStreamer & S)145 PPCTargetMachOStreamer(MCStreamer &S) : PPCTargetStreamer(S) {}
emitTCEntry(const MCSymbol & S)146 void emitTCEntry(const MCSymbol &S) override {
147 llvm_unreachable("Unknown pseudo-op: .tc");
148 }
emitMachine(StringRef CPU)149 void emitMachine(StringRef CPU) override {
150 // FIXME: We should update the CPUType, CPUSubType in the Object file if
151 // the new values are different from the defaults.
152 }
153 };
154 }
155
156 // This is duplicated code. Refactor this.
createMCStreamer(const Target & T,StringRef TT,MCContext & Ctx,MCAsmBackend & MAB,raw_ostream & OS,MCCodeEmitter * Emitter,const MCSubtargetInfo & STI,bool RelaxAll,bool NoExecStack)157 static MCStreamer *createMCStreamer(const Target &T, StringRef TT,
158 MCContext &Ctx, MCAsmBackend &MAB,
159 raw_ostream &OS,
160 MCCodeEmitter *Emitter,
161 const MCSubtargetInfo &STI,
162 bool RelaxAll,
163 bool NoExecStack) {
164 if (Triple(TT).isOSDarwin()) {
165 MCStreamer *S = createMachOStreamer(Ctx, MAB, OS, Emitter, RelaxAll);
166 new PPCTargetMachOStreamer(*S);
167 return S;
168 }
169
170 MCStreamer *S =
171 createELFStreamer(Ctx, MAB, OS, Emitter, RelaxAll, NoExecStack);
172 new PPCTargetELFStreamer(*S);
173 return S;
174 }
175
176 static MCStreamer *
createMCAsmStreamer(MCContext & Ctx,formatted_raw_ostream & OS,bool isVerboseAsm,bool useDwarfDirectory,MCInstPrinter * InstPrint,MCCodeEmitter * CE,MCAsmBackend * TAB,bool ShowInst)177 createMCAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS,
178 bool isVerboseAsm, bool useDwarfDirectory,
179 MCInstPrinter *InstPrint, MCCodeEmitter *CE,
180 MCAsmBackend *TAB, bool ShowInst) {
181
182 MCStreamer *S = llvm::createAsmStreamer(
183 Ctx, OS, isVerboseAsm, useDwarfDirectory, InstPrint, CE, TAB, ShowInst);
184 new PPCTargetAsmStreamer(*S, OS);
185 return S;
186 }
187
createPPCMCInstPrinter(const Target & T,unsigned SyntaxVariant,const MCAsmInfo & MAI,const MCInstrInfo & MII,const MCRegisterInfo & MRI,const MCSubtargetInfo & STI)188 static MCInstPrinter *createPPCMCInstPrinter(const Target &T,
189 unsigned SyntaxVariant,
190 const MCAsmInfo &MAI,
191 const MCInstrInfo &MII,
192 const MCRegisterInfo &MRI,
193 const MCSubtargetInfo &STI) {
194 bool isDarwin = Triple(STI.getTargetTriple()).isOSDarwin();
195 return new PPCInstPrinter(MAI, MII, MRI, isDarwin);
196 }
197
LLVMInitializePowerPCTargetMC()198 extern "C" void LLVMInitializePowerPCTargetMC() {
199 // Register the MC asm info.
200 RegisterMCAsmInfoFn C(ThePPC32Target, createPPCMCAsmInfo);
201 RegisterMCAsmInfoFn D(ThePPC64Target, createPPCMCAsmInfo);
202 RegisterMCAsmInfoFn E(ThePPC64LETarget, createPPCMCAsmInfo);
203
204 // Register the MC codegen info.
205 TargetRegistry::RegisterMCCodeGenInfo(ThePPC32Target, createPPCMCCodeGenInfo);
206 TargetRegistry::RegisterMCCodeGenInfo(ThePPC64Target, createPPCMCCodeGenInfo);
207 TargetRegistry::RegisterMCCodeGenInfo(ThePPC64LETarget,
208 createPPCMCCodeGenInfo);
209
210 // Register the MC instruction info.
211 TargetRegistry::RegisterMCInstrInfo(ThePPC32Target, createPPCMCInstrInfo);
212 TargetRegistry::RegisterMCInstrInfo(ThePPC64Target, createPPCMCInstrInfo);
213 TargetRegistry::RegisterMCInstrInfo(ThePPC64LETarget,
214 createPPCMCInstrInfo);
215
216 // Register the MC register info.
217 TargetRegistry::RegisterMCRegInfo(ThePPC32Target, createPPCMCRegisterInfo);
218 TargetRegistry::RegisterMCRegInfo(ThePPC64Target, createPPCMCRegisterInfo);
219 TargetRegistry::RegisterMCRegInfo(ThePPC64LETarget, createPPCMCRegisterInfo);
220
221 // Register the MC subtarget info.
222 TargetRegistry::RegisterMCSubtargetInfo(ThePPC32Target,
223 createPPCMCSubtargetInfo);
224 TargetRegistry::RegisterMCSubtargetInfo(ThePPC64Target,
225 createPPCMCSubtargetInfo);
226 TargetRegistry::RegisterMCSubtargetInfo(ThePPC64LETarget,
227 createPPCMCSubtargetInfo);
228
229 // Register the MC Code Emitter
230 TargetRegistry::RegisterMCCodeEmitter(ThePPC32Target, createPPCMCCodeEmitter);
231 TargetRegistry::RegisterMCCodeEmitter(ThePPC64Target, createPPCMCCodeEmitter);
232 TargetRegistry::RegisterMCCodeEmitter(ThePPC64LETarget,
233 createPPCMCCodeEmitter);
234
235 // Register the asm backend.
236 TargetRegistry::RegisterMCAsmBackend(ThePPC32Target, createPPCAsmBackend);
237 TargetRegistry::RegisterMCAsmBackend(ThePPC64Target, createPPCAsmBackend);
238 TargetRegistry::RegisterMCAsmBackend(ThePPC64LETarget, createPPCAsmBackend);
239
240 // Register the object streamer.
241 TargetRegistry::RegisterMCObjectStreamer(ThePPC32Target, createMCStreamer);
242 TargetRegistry::RegisterMCObjectStreamer(ThePPC64Target, createMCStreamer);
243 TargetRegistry::RegisterMCObjectStreamer(ThePPC64LETarget, createMCStreamer);
244
245 // Register the asm streamer.
246 TargetRegistry::RegisterAsmStreamer(ThePPC32Target, createMCAsmStreamer);
247 TargetRegistry::RegisterAsmStreamer(ThePPC64Target, createMCAsmStreamer);
248 TargetRegistry::RegisterAsmStreamer(ThePPC64LETarget, createMCAsmStreamer);
249
250 // Register the MCInstPrinter.
251 TargetRegistry::RegisterMCInstPrinter(ThePPC32Target, createPPCMCInstPrinter);
252 TargetRegistry::RegisterMCInstPrinter(ThePPC64Target, createPPCMCInstPrinter);
253 TargetRegistry::RegisterMCInstPrinter(ThePPC64LETarget,
254 createPPCMCInstPrinter);
255 }
256