1 //===-- ARMMCTargetDesc.h - ARM Target Descriptions -------------*- C++ -*-===//
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 // This file provides ARM specific target descriptions.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_LIB_TARGET_ARM_MCTARGETDESC_ARMMCTARGETDESC_H
14 #define LLVM_LIB_TARGET_ARM_MCTARGETDESC_ARMMCTARGETDESC_H
15 
16 #include "llvm/Support/DataTypes.h"
17 #include "llvm/MC/MCInstrDesc.h"
18 #include <memory>
19 #include <string>
20 
21 namespace llvm {
22 class formatted_raw_ostream;
23 class MCAsmBackend;
24 class MCCodeEmitter;
25 class MCContext;
26 class MCInstrInfo;
27 class MCInstPrinter;
28 class MCObjectTargetWriter;
29 class MCObjectWriter;
30 class MCRegisterInfo;
31 class MCSubtargetInfo;
32 class MCStreamer;
33 class MCTargetOptions;
34 class MCRelocationInfo;
35 class MCTargetStreamer;
36 class StringRef;
37 class Target;
38 class Triple;
39 
40 namespace ARM_MC {
41 std::string ParseARMTriple(const Triple &TT, StringRef CPU);
42 void initLLVMToCVRegMapping(MCRegisterInfo *MRI);
43 
44 bool isPredicated(const MCInst &MI, const MCInstrInfo *MCII);
45 bool isCPSRDefined(const MCInst &MI, const MCInstrInfo *MCII);
46 
47 template<class Inst>
isLDMBaseRegInList(const Inst & MI)48 bool isLDMBaseRegInList(const Inst &MI) {
49   auto BaseReg = MI.getOperand(0).getReg();
50   for (unsigned I = 1, E = MI.getNumOperands(); I < E; ++I) {
51     const auto &Op = MI.getOperand(I);
52     if (Op.isReg() && Op.getReg() == BaseReg)
53       return true;
54   }
55   return false;
56 }
57 
58 uint64_t evaluateBranchTarget(const MCInstrDesc &InstDesc, uint64_t Addr,
59                               int64_t Imm);
60 
61 /// Create a ARM MCSubtargetInfo instance. This is exposed so Asm parser, etc.
62 /// do not need to go through TargetRegistry.
63 MCSubtargetInfo *createARMMCSubtargetInfo(const Triple &TT, StringRef CPU,
64                                           StringRef FS);
65 }
66 
67 MCTargetStreamer *createARMNullTargetStreamer(MCStreamer &S);
68 MCTargetStreamer *createARMTargetAsmStreamer(MCStreamer &S,
69                                              formatted_raw_ostream &OS,
70                                              MCInstPrinter *InstPrint,
71                                              bool isVerboseAsm);
72 MCTargetStreamer *createARMObjectTargetStreamer(MCStreamer &S,
73                                                 const MCSubtargetInfo &STI);
74 MCTargetStreamer *createARMObjectTargetELFStreamer(MCStreamer &S);
75 MCTargetStreamer *createARMObjectTargetWinCOFFStreamer(MCStreamer &S);
76 
77 MCCodeEmitter *createARMLEMCCodeEmitter(const MCInstrInfo &MCII,
78                                         MCContext &Ctx);
79 
80 MCCodeEmitter *createARMBEMCCodeEmitter(const MCInstrInfo &MCII,
81                                         MCContext &Ctx);
82 
83 MCAsmBackend *createARMLEAsmBackend(const Target &T, const MCSubtargetInfo &STI,
84                                     const MCRegisterInfo &MRI,
85                                     const MCTargetOptions &Options);
86 
87 MCAsmBackend *createARMBEAsmBackend(const Target &T, const MCSubtargetInfo &STI,
88                                     const MCRegisterInfo &MRI,
89                                     const MCTargetOptions &Options);
90 
91 // Construct a PE/COFF machine code streamer which will generate a PE/COFF
92 // object file.
93 MCStreamer *createARMWinCOFFStreamer(MCContext &Context,
94                                      std::unique_ptr<MCAsmBackend> &&MAB,
95                                      std::unique_ptr<MCObjectWriter> &&OW,
96                                      std::unique_ptr<MCCodeEmitter> &&Emitter,
97                                      bool RelaxAll,
98                                      bool IncrementalLinkerCompatible);
99 
100 /// Construct an ELF Mach-O object writer.
101 std::unique_ptr<MCObjectTargetWriter> createARMELFObjectWriter(uint8_t OSABI);
102 
103 /// Construct an ARM Mach-O object writer.
104 std::unique_ptr<MCObjectTargetWriter>
105 createARMMachObjectWriter(bool Is64Bit, uint32_t CPUType,
106                           uint32_t CPUSubtype);
107 
108 /// Construct an ARM PE/COFF object writer.
109 std::unique_ptr<MCObjectTargetWriter>
110 createARMWinCOFFObjectWriter();
111 
112 /// Construct ARM Mach-O relocation info.
113 MCRelocationInfo *createARMMachORelocationInfo(MCContext &Ctx);
114 
115 namespace ARM {
116 enum OperandType {
117   OPERAND_VPRED_R = MCOI::OPERAND_FIRST_TARGET,
118   OPERAND_VPRED_N,
119 };
isVpred(OperandType op)120 inline bool isVpred(OperandType op) {
121   return op == OPERAND_VPRED_R || op == OPERAND_VPRED_N;
122 }
isVpred(uint8_t op)123 inline bool isVpred(uint8_t op) {
124   return isVpred(static_cast<OperandType>(op));
125 }
126 
127 bool isCDECoproc(size_t Coproc, const MCSubtargetInfo &STI);
128 
129 } // end namespace ARM
130 
131 } // End llvm namespace
132 
133 // Defines symbolic names for ARM registers.  This defines a mapping from
134 // register name to register number.
135 //
136 #define GET_REGINFO_ENUM
137 #include "ARMGenRegisterInfo.inc"
138 
139 // Defines symbolic names for the ARM instructions.
140 //
141 #define GET_INSTRINFO_ENUM
142 #define GET_INSTRINFO_MC_HELPER_DECLS
143 #include "ARMGenInstrInfo.inc"
144 
145 #define GET_SUBTARGETINFO_ENUM
146 #include "ARMGenSubtargetInfo.inc"
147 
148 #endif
149