Revert r247692: Replace Triple with a new TargetTuple in MCTargetDesc/* and related...
[oota-llvm.git] / lib / Target / AArch64 / MCTargetDesc / AArch64MCTargetDesc.cpp
1 //===-- AArch64MCTargetDesc.cpp - AArch64 Target Descriptions ---*- C++ -*-===//
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 AArch64 specific target descriptions.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "AArch64MCTargetDesc.h"
15 #include "AArch64ELFStreamer.h"
16 #include "AArch64MCAsmInfo.h"
17 #include "InstPrinter/AArch64InstPrinter.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/Support/ErrorHandling.h"
24 #include "llvm/Support/TargetRegistry.h"
25
26 using namespace llvm;
27
28 #define GET_INSTRINFO_MC_DESC
29 #include "AArch64GenInstrInfo.inc"
30
31 #define GET_SUBTARGETINFO_MC_DESC
32 #include "AArch64GenSubtargetInfo.inc"
33
34 #define GET_REGINFO_MC_DESC
35 #include "AArch64GenRegisterInfo.inc"
36
37 static MCInstrInfo *createAArch64MCInstrInfo() {
38   MCInstrInfo *X = new MCInstrInfo();
39   InitAArch64MCInstrInfo(X);
40   return X;
41 }
42
43 static MCSubtargetInfo *
44 createAArch64MCSubtargetInfo(const Triple &TT, StringRef CPU, StringRef FS) {
45   if (CPU.empty())
46     CPU = "generic";
47
48   return createAArch64MCSubtargetInfoImpl(TT, CPU, FS);
49 }
50
51 static MCRegisterInfo *createAArch64MCRegisterInfo(const Triple &Triple) {
52   MCRegisterInfo *X = new MCRegisterInfo();
53   InitAArch64MCRegisterInfo(X, AArch64::LR);
54   return X;
55 }
56
57 static MCAsmInfo *createAArch64MCAsmInfo(const MCRegisterInfo &MRI,
58                                          const Triple &TheTriple) {
59   MCAsmInfo *MAI;
60   if (TheTriple.isOSBinFormatMachO())
61     MAI = new AArch64MCAsmInfoDarwin();
62   else {
63     assert(TheTriple.isOSBinFormatELF() && "Only expect Darwin or ELF");
64     MAI = new AArch64MCAsmInfoELF(TheTriple);
65   }
66
67   // Initial state of the frame pointer is SP.
68   unsigned Reg = MRI.getDwarfRegNum(AArch64::SP, true);
69   MCCFIInstruction Inst = MCCFIInstruction::createDefCfa(nullptr, Reg, 0);
70   MAI->addInitialFrameState(Inst);
71
72   return MAI;
73 }
74
75 static MCCodeGenInfo *createAArch64MCCodeGenInfo(const Triple &TT,
76                                                  Reloc::Model RM,
77                                                  CodeModel::Model CM,
78                                                  CodeGenOpt::Level OL) {
79   assert((TT.isOSBinFormatELF() || TT.isOSBinFormatMachO()) &&
80          "Only expect Darwin and ELF targets");
81
82   if (CM == CodeModel::Default)
83     CM = CodeModel::Small;
84   // The default MCJIT memory managers make no guarantees about where they can
85   // find an executable page; JITed code needs to be able to refer to globals
86   // no matter how far away they are.
87   else if (CM == CodeModel::JITDefault)
88     CM = CodeModel::Large;
89   else if (CM != CodeModel::Small && CM != CodeModel::Large)
90     report_fatal_error(
91         "Only small and large code models are allowed on AArch64");
92
93   // AArch64 Darwin is always PIC.
94   if (TT.isOSDarwin())
95     RM = Reloc::PIC_;
96   // On ELF platforms the default static relocation model has a smart enough
97   // linker to cope with referencing external symbols defined in a shared
98   // library. Hence DynamicNoPIC doesn't need to be promoted to PIC.
99   else if (RM == Reloc::Default || RM == Reloc::DynamicNoPIC)
100     RM = Reloc::Static;
101
102   MCCodeGenInfo *X = new MCCodeGenInfo();
103   X->initMCCodeGenInfo(RM, CM, OL);
104   return X;
105 }
106
107 static MCInstPrinter *createAArch64MCInstPrinter(const Triple &T,
108                                                  unsigned SyntaxVariant,
109                                                  const MCAsmInfo &MAI,
110                                                  const MCInstrInfo &MII,
111                                                  const MCRegisterInfo &MRI) {
112   if (SyntaxVariant == 0)
113     return new AArch64InstPrinter(MAI, MII, MRI);
114   if (SyntaxVariant == 1)
115     return new AArch64AppleInstPrinter(MAI, MII, MRI);
116
117   return nullptr;
118 }
119
120 static MCStreamer *createELFStreamer(const Triple &T, MCContext &Ctx,
121                                      MCAsmBackend &TAB, raw_pwrite_stream &OS,
122                                      MCCodeEmitter *Emitter, bool RelaxAll) {
123   return createAArch64ELFStreamer(Ctx, TAB, OS, Emitter, RelaxAll);
124 }
125
126 static MCStreamer *createMachOStreamer(MCContext &Ctx, MCAsmBackend &TAB,
127                                        raw_pwrite_stream &OS,
128                                        MCCodeEmitter *Emitter, bool RelaxAll,
129                                        bool DWARFMustBeAtTheEnd) {
130   return createMachOStreamer(Ctx, TAB, OS, Emitter, RelaxAll,
131                              DWARFMustBeAtTheEnd,
132                              /*LabelSections*/ true);
133 }
134
135 // Force static initialization.
136 extern "C" void LLVMInitializeAArch64TargetMC() {
137   for (Target *T :
138        {&TheAArch64leTarget, &TheAArch64beTarget, &TheARM64Target}) {
139     // Register the MC asm info.
140     RegisterMCAsmInfoFn X(*T, createAArch64MCAsmInfo);
141
142     // Register the MC codegen info.
143     TargetRegistry::RegisterMCCodeGenInfo(*T, createAArch64MCCodeGenInfo);
144
145     // Register the MC instruction info.
146     TargetRegistry::RegisterMCInstrInfo(*T, createAArch64MCInstrInfo);
147
148     // Register the MC register info.
149     TargetRegistry::RegisterMCRegInfo(*T, createAArch64MCRegisterInfo);
150
151     // Register the MC subtarget info.
152     TargetRegistry::RegisterMCSubtargetInfo(*T, createAArch64MCSubtargetInfo);
153
154     // Register the MC Code Emitter
155     TargetRegistry::RegisterMCCodeEmitter(*T, createAArch64MCCodeEmitter);
156
157     // Register the obj streamers.
158     TargetRegistry::RegisterELFStreamer(*T, createELFStreamer);
159     TargetRegistry::RegisterMachOStreamer(*T, createMachOStreamer);
160
161     // Register the obj target streamer.
162     TargetRegistry::RegisterObjectTargetStreamer(
163         *T, createAArch64ObjectTargetStreamer);
164
165     // Register the asm streamer.
166     TargetRegistry::RegisterAsmTargetStreamer(*T,
167                                               createAArch64AsmTargetStreamer);
168     // Register the MCInstPrinter.
169     TargetRegistry::RegisterMCInstPrinter(*T, createAArch64MCInstPrinter);
170   }
171
172   // Register the asm backend.
173   for (Target *T : {&TheAArch64leTarget, &TheARM64Target})
174     TargetRegistry::RegisterMCAsmBackend(*T, createAArch64leAsmBackend);
175   TargetRegistry::RegisterMCAsmBackend(TheAArch64beTarget,
176                                        createAArch64beAsmBackend);
177 }