1 //===-- X86MCTargetDesc.h - X86 Target Descriptions -------------*- C++ -*-===//
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
7 //===----------------------------------------------------------------------===//
9 // This file provides X86 specific target descriptions.
11 //===----------------------------------------------------------------------===//
13 #ifndef LLVM_LIB_TARGET_X86_MCTARGETDESC_X86MCTARGETDESC_H
14 #define LLVM_LIB_TARGET_X86_MCTARGETDESC_X86MCTARGETDESC_H
20 class formatted_raw_ostream;
27 class MCObjectTargetWriter;
32 class MCSubtargetInfo;
33 class MCTargetOptions;
34 class MCTargetStreamer;
39 /// Flavour of dwarf regnumbers
41 namespace DWARFFlavour {
43 X86_64 = 0, X86_32_DarwinEH = 1, X86_32_Generic = 2
47 /// Native X86 register numbers
51 EAX = 0, ECX = 1, EDX = 2, EBX = 3, ESP = 4, EBP = 5, ESI = 6, EDI = 7
56 std::string ParseX86Triple(const Triple &TT);
58 unsigned getDwarfRegFlavour(const Triple &TT, bool isEH);
60 void initLLVMToSEHAndCVRegMapping(MCRegisterInfo *MRI);
63 /// Returns true if this instruction has a LOCK prefix.
64 bool hasLockPrefix(const MCInst &MI);
66 /// Create a X86 MCSubtargetInfo instance. This is exposed so Asm parser, etc.
67 /// do not need to go through TargetRegistry.
68 MCSubtargetInfo *createX86MCSubtargetInfo(const Triple &TT, StringRef CPU,
72 MCCodeEmitter *createX86MCCodeEmitter(const MCInstrInfo &MCII,
73 const MCRegisterInfo &MRI,
76 MCAsmBackend *createX86_32AsmBackend(const Target &T,
77 const MCSubtargetInfo &STI,
78 const MCRegisterInfo &MRI,
79 const MCTargetOptions &Options);
80 MCAsmBackend *createX86_64AsmBackend(const Target &T,
81 const MCSubtargetInfo &STI,
82 const MCRegisterInfo &MRI,
83 const MCTargetOptions &Options);
85 /// Implements X86-only directives for assembly emission.
86 MCTargetStreamer *createX86AsmTargetStreamer(MCStreamer &S,
87 formatted_raw_ostream &OS,
88 MCInstPrinter *InstPrinter,
91 /// Implements X86-only directives for object files.
92 MCTargetStreamer *createX86ObjectTargetStreamer(MCStreamer &S,
93 const MCSubtargetInfo &STI);
95 /// Construct an X86 Windows COFF machine code streamer which will generate
96 /// PE/COFF format object files.
98 /// Takes ownership of \p AB and \p CE.
99 MCStreamer *createX86WinCOFFStreamer(MCContext &C,
100 std::unique_ptr<MCAsmBackend> &&AB,
101 std::unique_ptr<MCObjectWriter> &&OW,
102 std::unique_ptr<MCCodeEmitter> &&CE,
104 bool IncrementalLinkerCompatible);
106 /// Construct an X86 Mach-O object writer.
107 std::unique_ptr<MCObjectTargetWriter>
108 createX86MachObjectWriter(bool Is64Bit, uint32_t CPUType, uint32_t CPUSubtype);
110 /// Construct an X86 ELF object writer.
111 std::unique_ptr<MCObjectTargetWriter>
112 createX86ELFObjectWriter(bool IsELF64, uint8_t OSABI, uint16_t EMachine);
113 /// Construct an X86 Win COFF object writer.
114 std::unique_ptr<MCObjectTargetWriter>
115 createX86WinCOFFObjectWriter(bool Is64Bit);
117 /// Returns the sub or super register of a specific X86 register.
118 /// e.g. getX86SubSuperRegister(X86::EAX, 16) returns X86::AX.
120 MCRegister getX86SubSuperRegister(MCRegister, unsigned, bool High=false);
122 /// Returns the sub or super register of a specific X86 register.
123 /// Like getX86SubSuperRegister() but returns 0 on error.
124 MCRegister getX86SubSuperRegisterOrZero(MCRegister, unsigned,
127 } // End llvm namespace
130 // Defines symbolic names for X86 registers. This defines a mapping from
131 // register name to register number.
133 #define GET_REGINFO_ENUM
134 #include "X86GenRegisterInfo.inc"
136 // Defines symbolic names for the X86 instructions.
138 #define GET_INSTRINFO_ENUM
139 #define GET_INSTRINFO_MC_HELPER_DECLS
140 #include "X86GenInstrInfo.inc"
142 #define GET_SUBTARGETINFO_ENUM
143 #include "X86GenSubtargetInfo.inc"