//===-- X86DisassemblerDecoderCommon.h - Disassembler decoder ---*- C++ -*-===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// // // This file is part of the X86 Disassembler. // It contains common definitions used by both the disassembler and the table // generator. // Documentation for the disassembler can be found in X86Disassembler.h. // //===----------------------------------------------------------------------===// #ifndef LLVM_LIB_TARGET_X86_DISASSEMBLER_X86DISASSEMBLERDECODERCOMMON_H #define LLVM_LIB_TARGET_X86_DISASSEMBLER_X86DISASSEMBLERDECODERCOMMON_H #include "llvm/Support/DataTypes.h" namespace llvm { namespace X86Disassembler { #define INSTRUCTIONS_SYM x86DisassemblerInstrSpecifiers #define CONTEXTS_SYM x86DisassemblerContexts #define ONEBYTE_SYM x86DisassemblerOneByteOpcodes #define TWOBYTE_SYM x86DisassemblerTwoByteOpcodes #define THREEBYTE38_SYM x86DisassemblerThreeByte38Opcodes #define THREEBYTE3A_SYM x86DisassemblerThreeByte3AOpcodes #define XOP8_MAP_SYM x86DisassemblerXOP8Opcodes #define XOP9_MAP_SYM x86DisassemblerXOP9Opcodes #define XOPA_MAP_SYM x86DisassemblerXOPAOpcodes #define THREEDNOW_MAP_SYM x86Disassembler3DNowOpcodes #define INSTRUCTIONS_STR "x86DisassemblerInstrSpecifiers" #define CONTEXTS_STR "x86DisassemblerContexts" #define ONEBYTE_STR "x86DisassemblerOneByteOpcodes" #define TWOBYTE_STR "x86DisassemblerTwoByteOpcodes" #define THREEBYTE38_STR "x86DisassemblerThreeByte38Opcodes" #define THREEBYTE3A_STR "x86DisassemblerThreeByte3AOpcodes" #define XOP8_MAP_STR "x86DisassemblerXOP8Opcodes" #define XOP9_MAP_STR "x86DisassemblerXOP9Opcodes" #define XOPA_MAP_STR "x86DisassemblerXOPAOpcodes" #define THREEDNOW_MAP_STR "x86Disassembler3DNowOpcodes" // Attributes of an instruction that must be known before the opcode can be // processed correctly. Most of these indicate the presence of particular // prefixes, but ATTR_64BIT is simply an attribute of the decoding context. enum attributeBits { ATTR_NONE = 0x00, ATTR_64BIT = 0x1 << 0, ATTR_XS = 0x1 << 1, ATTR_XD = 0x1 << 2, ATTR_REXW = 0x1 << 3, ATTR_OPSIZE = 0x1 << 4, ATTR_ADSIZE = 0x1 << 5, ATTR_VEX = 0x1 << 6, ATTR_VEXL = 0x1 << 7, ATTR_EVEX = 0x1 << 8, ATTR_EVEXL2 = 0x1 << 9, ATTR_EVEXK = 0x1 << 10, ATTR_EVEXKZ = 0x1 << 11, ATTR_EVEXB = 0x1 << 12, ATTR_max = 0x1 << 13, }; // Combinations of the above attributes that are relevant to instruction // decode. Although other combinations are possible, they can be reduced to // these without affecting the ultimately decoded instruction. // Class name Rank Rationale for rank assignment #define INSTRUCTION_CONTEXTS \ ENUM_ENTRY(IC, 0, "says nothing about the instruction") \ ENUM_ENTRY(IC_64BIT, 1, "says the instruction applies in " \ "64-bit mode but no more") \ ENUM_ENTRY(IC_OPSIZE, 3, "requires an OPSIZE prefix, so " \ "operands change width") \ ENUM_ENTRY(IC_ADSIZE, 3, "requires an ADSIZE prefix, so " \ "operands change width") \ ENUM_ENTRY(IC_OPSIZE_ADSIZE, 4, "requires ADSIZE and OPSIZE prefixes") \ ENUM_ENTRY(IC_XD, 2, "may say something about the opcode " \ "but not the operands") \ ENUM_ENTRY(IC_XS, 2, "may say something about the opcode " \ "but not the operands") \ ENUM_ENTRY(IC_XD_OPSIZE, 3, "requires an OPSIZE prefix, so " \ "operands change width") \ ENUM_ENTRY(IC_XS_OPSIZE, 3, "requires an OPSIZE prefix, so " \ "operands change width") \ ENUM_ENTRY(IC_XD_ADSIZE, 3, "requires an ADSIZE prefix, so " \ "operands change width") \ ENUM_ENTRY(IC_XS_ADSIZE, 3, "requires an ADSIZE prefix, so " \ "operands change width") \ ENUM_ENTRY(IC_64BIT_REXW, 5, "requires a REX.W prefix, so operands "\ "change width; overrides IC_OPSIZE") \ ENUM_ENTRY(IC_64BIT_REXW_ADSIZE, 6, "requires a REX.W prefix and 0x67 " \ "prefix") \ ENUM_ENTRY(IC_64BIT_OPSIZE, 3, "Just as meaningful as IC_OPSIZE") \ ENUM_ENTRY(IC_64BIT_ADSIZE, 3, "Just as meaningful as IC_ADSIZE") \ ENUM_ENTRY(IC_64BIT_OPSIZE_ADSIZE, 4, "Just as meaningful as IC_OPSIZE/" \ "IC_ADSIZE") \ ENUM_ENTRY(IC_64BIT_XD, 6, "XD instructions are SSE; REX.W is " \ "secondary") \ ENUM_ENTRY(IC_64BIT_XS, 6, "Just as meaningful as IC_64BIT_XD") \ ENUM_ENTRY(IC_64BIT_XD_OPSIZE, 3, "Just as meaningful as IC_XD_OPSIZE") \ ENUM_ENTRY(IC_64BIT_XS_OPSIZE, 3, "Just as meaningful as IC_XS_OPSIZE") \ ENUM_ENTRY(IC_64BIT_XD_ADSIZE, 3, "Just as meaningful as IC_XD_ADSIZE") \ ENUM_ENTRY(IC_64BIT_XS_ADSIZE, 3, "Just as meaningful as IC_XS_ADSIZE") \ ENUM_ENTRY(IC_64BIT_REXW_XS, 7, "OPSIZE could mean a different " \ "opcode") \ ENUM_ENTRY(IC_64BIT_REXW_XD, 7, "Just as meaningful as " \ "IC_64BIT_REXW_XS") \ ENUM_ENTRY(IC_64BIT_REXW_OPSIZE, 8, "The Dynamic Duo! Prefer over all " \ "else because this changes most " \ "operands' meaning") \ ENUM_ENTRY(IC_VEX, 1, "requires a VEX prefix") \ ENUM_ENTRY(IC_VEX_XS, 2, "requires VEX and the XS prefix") \ ENUM_ENTRY(IC_VEX_XD, 2, "requires VEX and the XD prefix") \ ENUM_ENTRY(IC_VEX_OPSIZE, 2, "requires VEX and the OpSize prefix") \ ENUM_ENTRY(IC_VEX_W, 3, "requires VEX and the W prefix") \ ENUM_ENTRY(IC_VEX_W_XS, 4, "requires VEX, W, and XS prefix") \ ENUM_ENTRY(IC_VEX_W_XD, 4, "requires VEX, W, and XD prefix") \ ENUM_ENTRY(IC_VEX_W_OPSIZE, 4, "requires VEX, W, and OpSize") \ ENUM_ENTRY(IC_VEX_L, 3, "requires VEX and the L prefix") \ ENUM_ENTRY(IC_VEX_L_XS, 4, "requires VEX and the L and XS prefix")\ ENUM_ENTRY(IC_VEX_L_XD, 4, "requires VEX and the L and XD prefix")\ ENUM_ENTRY(IC_VEX_L_OPSIZE, 4, "requires VEX, L, and OpSize") \ ENUM_ENTRY(IC_VEX_L_W, 4, "requires VEX, L and W") \ ENUM_ENTRY(IC_VEX_L_W_XS, 5, "requires VEX, L, W and XS prefix") \ ENUM_ENTRY(IC_VEX_L_W_XD, 5, "requires VEX, L, W and XD prefix") \ ENUM_ENTRY(IC_VEX_L_W_OPSIZE, 5, "requires VEX, L, W and OpSize") \ ENUM_ENTRY(IC_EVEX, 1, "requires an EVEX prefix") \ ENUM_ENTRY(IC_EVEX_XS, 2, "requires EVEX and the XS prefix") \ ENUM_ENTRY(IC_EVEX_XD, 2, "requires EVEX and the XD prefix") \ ENUM_ENTRY(IC_EVEX_OPSIZE, 2, "requires EVEX and the OpSize prefix") \ ENUM_ENTRY(IC_EVEX_W, 3, "requires EVEX and the W prefix") \ ENUM_ENTRY(IC_EVEX_W_XS, 4, "requires EVEX, W, and XS prefix") \ ENUM_ENTRY(IC_EVEX_W_XD, 4, "requires EVEX, W, and XD prefix") \ ENUM_ENTRY(IC_EVEX_W_OPSIZE, 4, "requires EVEX, W, and OpSize") \ ENUM_ENTRY(IC_EVEX_L, 3, "requires EVEX and the L prefix") \ ENUM_ENTRY(IC_EVEX_L_XS, 4, "requires EVEX and the L and XS prefix")\ ENUM_ENTRY(IC_EVEX_L_XD, 4, "requires EVEX and the L and XD prefix")\ ENUM_ENTRY(IC_EVEX_L_OPSIZE, 4, "requires EVEX, L, and OpSize") \ ENUM_ENTRY(IC_EVEX_L_W, 3, "requires EVEX, L and W") \ ENUM_ENTRY(IC_EVEX_L_W_XS, 4, "requires EVEX, L, W and XS prefix") \ ENUM_ENTRY(IC_EVEX_L_W_XD, 4, "requires EVEX, L, W and XD prefix") \ ENUM_ENTRY(IC_EVEX_L_W_OPSIZE, 4, "requires EVEX, L, W and OpSize") \ ENUM_ENTRY(IC_EVEX_L2, 3, "requires EVEX and the L2 prefix") \ ENUM_ENTRY(IC_EVEX_L2_XS, 4, "requires EVEX and the L2 and XS prefix")\ ENUM_ENTRY(IC_EVEX_L2_XD, 4, "requires EVEX and the L2 and XD prefix")\ ENUM_ENTRY(IC_EVEX_L2_OPSIZE, 4, "requires EVEX, L2, and OpSize") \ ENUM_ENTRY(IC_EVEX_L2_W, 3, "requires EVEX, L2 and W") \ ENUM_ENTRY(IC_EVEX_L2_W_XS, 4, "requires EVEX, L2, W and XS prefix") \ ENUM_ENTRY(IC_EVEX_L2_W_XD, 4, "requires EVEX, L2, W and XD prefix") \ ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE, 4, "requires EVEX, L2, W and OpSize") \ ENUM_ENTRY(IC_EVEX_K, 1, "requires an EVEX_K prefix") \ ENUM_ENTRY(IC_EVEX_XS_K, 2, "requires EVEX_K and the XS prefix") \ ENUM_ENTRY(IC_EVEX_XD_K, 2, "requires EVEX_K and the XD prefix") \ ENUM_ENTRY(IC_EVEX_OPSIZE_K, 2, "requires EVEX_K and the OpSize prefix") \ ENUM_ENTRY(IC_EVEX_W_K, 3, "requires EVEX_K and the W prefix") \ ENUM_ENTRY(IC_EVEX_W_XS_K, 4, "requires EVEX_K, W, and XS prefix") \ ENUM_ENTRY(IC_EVEX_W_XD_K, 4, "requires EVEX_K, W, and XD prefix") \ ENUM_ENTRY(IC_EVEX_W_OPSIZE_K, 4, "requires EVEX_K, W, and OpSize") \ ENUM_ENTRY(IC_EVEX_L_K, 3, "requires EVEX_K and the L prefix") \ ENUM_ENTRY(IC_EVEX_L_XS_K, 4, "requires EVEX_K and the L and XS prefix")\ ENUM_ENTRY(IC_EVEX_L_XD_K, 4, "requires EVEX_K and the L and XD prefix")\ ENUM_ENTRY(IC_EVEX_L_OPSIZE_K, 4, "requires EVEX_K, L, and OpSize") \ ENUM_ENTRY(IC_EVEX_L_W_K, 3, "requires EVEX_K, L and W") \ ENUM_ENTRY(IC_EVEX_L_W_XS_K, 4, "requires EVEX_K, L, W and XS prefix") \ ENUM_ENTRY(IC_EVEX_L_W_XD_K, 4, "requires EVEX_K, L, W and XD prefix") \ ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_K, 4, "requires EVEX_K, L, W and OpSize") \ ENUM_ENTRY(IC_EVEX_L2_K, 3, "requires EVEX_K and the L2 prefix") \ ENUM_ENTRY(IC_EVEX_L2_XS_K, 4, "requires EVEX_K and the L2 and XS prefix")\ ENUM_ENTRY(IC_EVEX_L2_XD_K, 4, "requires EVEX_K and the L2 and XD prefix")\ ENUM_ENTRY(IC_EVEX_L2_OPSIZE_K, 4, "requires EVEX_K, L2, and OpSize") \ ENUM_ENTRY(IC_EVEX_L2_W_K, 3, "requires EVEX_K, L2 and W") \ ENUM_ENTRY(IC_EVEX_L2_W_XS_K, 4, "requires EVEX_K, L2, W and XS prefix") \ ENUM_ENTRY(IC_EVEX_L2_W_XD_K, 4, "requires EVEX_K, L2, W and XD prefix") \ ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_K, 4, "requires EVEX_K, L2, W and OpSize") \ ENUM_ENTRY(IC_EVEX_B, 1, "requires an EVEX_B prefix") \ ENUM_ENTRY(IC_EVEX_XS_B, 2, "requires EVEX_B and the XS prefix") \ ENUM_ENTRY(IC_EVEX_XD_B, 2, "requires EVEX_B and the XD prefix") \ ENUM_ENTRY(IC_EVEX_OPSIZE_B, 2, "requires EVEX_B and the OpSize prefix") \ ENUM_ENTRY(IC_EVEX_W_B, 3, "requires EVEX_B and the W prefix") \ ENUM_ENTRY(IC_EVEX_W_XS_B, 4, "requires EVEX_B, W, and XS prefix") \ ENUM_ENTRY(IC_EVEX_W_XD_B, 4, "requires EVEX_B, W, and XD prefix") \ ENUM_ENTRY(IC_EVEX_W_OPSIZE_B, 4, "requires EVEX_B, W, and OpSize") \ ENUM_ENTRY(IC_EVEX_L_B, 3, "requires EVEX_B and the L prefix") \ ENUM_ENTRY(IC_EVEX_L_XS_B, 4, "requires EVEX_B and the L and XS prefix")\ ENUM_ENTRY(IC_EVEX_L_XD_B, 4, "requires EVEX_B and the L and XD prefix")\ ENUM_ENTRY(IC_EVEX_L_OPSIZE_B, 4, "requires EVEX_B, L, and OpSize") \ ENUM_ENTRY(IC_EVEX_L_W_B, 3, "requires EVEX_B, L and W") \ ENUM_ENTRY(IC_EVEX_L_W_XS_B, 4, "requires EVEX_B, L, W and XS prefix") \ ENUM_ENTRY(IC_EVEX_L_W_XD_B, 4, "requires EVEX_B, L, W and XD prefix") \ ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_B, 4, "requires EVEX_B, L, W and OpSize") \ ENUM_ENTRY(IC_EVEX_L2_B, 3, "requires EVEX_B and the L2 prefix") \ ENUM_ENTRY(IC_EVEX_L2_XS_B, 4, "requires EVEX_B and the L2 and XS prefix")\ ENUM_ENTRY(IC_EVEX_L2_XD_B, 4, "requires EVEX_B and the L2 and XD prefix")\ ENUM_ENTRY(IC_EVEX_L2_OPSIZE_B, 4, "requires EVEX_B, L2, and OpSize") \ ENUM_ENTRY(IC_EVEX_L2_W_B, 3, "requires EVEX_B, L2 and W") \ ENUM_ENTRY(IC_EVEX_L2_W_XS_B, 4, "requires EVEX_B, L2, W and XS prefix") \ ENUM_ENTRY(IC_EVEX_L2_W_XD_B, 4, "requires EVEX_B, L2, W and XD prefix") \ ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_B, 4, "requires EVEX_B, L2, W and OpSize") \ ENUM_ENTRY(IC_EVEX_K_B, 1, "requires EVEX_B and EVEX_K prefix") \ ENUM_ENTRY(IC_EVEX_XS_K_B, 2, "requires EVEX_B, EVEX_K and the XS prefix") \ ENUM_ENTRY(IC_EVEX_XD_K_B, 2, "requires EVEX_B, EVEX_K and the XD prefix") \ ENUM_ENTRY(IC_EVEX_OPSIZE_K_B, 2, "requires EVEX_B, EVEX_K and the OpSize prefix") \ ENUM_ENTRY(IC_EVEX_W_K_B, 3, "requires EVEX_B, EVEX_K and the W prefix") \ ENUM_ENTRY(IC_EVEX_W_XS_K_B, 4, "requires EVEX_B, EVEX_K, W, and XS prefix") \ ENUM_ENTRY(IC_EVEX_W_XD_K_B, 4, "requires EVEX_B, EVEX_K, W, and XD prefix") \ ENUM_ENTRY(IC_EVEX_W_OPSIZE_K_B, 4, "requires EVEX_B, EVEX_K, W, and OpSize") \ ENUM_ENTRY(IC_EVEX_L_K_B, 3, "requires EVEX_B, EVEX_K and the L prefix") \ ENUM_ENTRY(IC_EVEX_L_XS_K_B, 4, "requires EVEX_B, EVEX_K and the L and XS prefix")\ ENUM_ENTRY(IC_EVEX_L_XD_K_B, 4, "requires EVEX_B, EVEX_K and the L and XD prefix")\ ENUM_ENTRY(IC_EVEX_L_OPSIZE_K_B, 4, "requires EVEX_B, EVEX_K, L, and OpSize") \ ENUM_ENTRY(IC_EVEX_L_W_K_B, 3, "requires EVEX_B, EVEX_K, L and W") \ ENUM_ENTRY(IC_EVEX_L_W_XS_K_B, 4, "requires EVEX_B, EVEX_K, L, W and XS prefix") \ ENUM_ENTRY(IC_EVEX_L_W_XD_K_B, 4, "requires EVEX_B, EVEX_K, L, W and XD prefix") \ ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_K_B,4, "requires EVEX_B, EVEX_K, L, W and OpSize") \ ENUM_ENTRY(IC_EVEX_L2_K_B, 3, "requires EVEX_B, EVEX_K and the L2 prefix") \ ENUM_ENTRY(IC_EVEX_L2_XS_K_B, 4, "requires EVEX_B, EVEX_K and the L2 and XS prefix")\ ENUM_ENTRY(IC_EVEX_L2_XD_K_B, 4, "requires EVEX_B, EVEX_K and the L2 and XD prefix")\ ENUM_ENTRY(IC_EVEX_L2_OPSIZE_K_B, 4, "requires EVEX_B, EVEX_K, L2, and OpSize") \ ENUM_ENTRY(IC_EVEX_L2_W_K_B, 3, "requires EVEX_B, EVEX_K, L2 and W") \ ENUM_ENTRY(IC_EVEX_L2_W_XS_K_B, 4, "requires EVEX_B, EVEX_K, L2, W and XS prefix") \ ENUM_ENTRY(IC_EVEX_L2_W_XD_K_B, 4, "requires EVEX_B, EVEX_K, L2, W and XD prefix") \ ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_K_B,4, "requires EVEX_B, EVEX_K, L2, W and OpSize") \ ENUM_ENTRY(IC_EVEX_KZ_B, 1, "requires EVEX_B and EVEX_KZ prefix") \ ENUM_ENTRY(IC_EVEX_XS_KZ_B, 2, "requires EVEX_B, EVEX_KZ and the XS prefix") \ ENUM_ENTRY(IC_EVEX_XD_KZ_B, 2, "requires EVEX_B, EVEX_KZ and the XD prefix") \ ENUM_ENTRY(IC_EVEX_OPSIZE_KZ_B, 2, "requires EVEX_B, EVEX_KZ and the OpSize prefix") \ ENUM_ENTRY(IC_EVEX_W_KZ_B, 3, "requires EVEX_B, EVEX_KZ and the W prefix") \ ENUM_ENTRY(IC_EVEX_W_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ, W, and XS prefix") \ ENUM_ENTRY(IC_EVEX_W_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ, W, and XD prefix") \ ENUM_ENTRY(IC_EVEX_W_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, W, and OpSize") \ ENUM_ENTRY(IC_EVEX_L_KZ_B, 3, "requires EVEX_B, EVEX_KZ and the L prefix") \ ENUM_ENTRY(IC_EVEX_L_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ and the L and XS prefix")\ ENUM_ENTRY(IC_EVEX_L_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ and the L and XD prefix")\ ENUM_ENTRY(IC_EVEX_L_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L, and OpSize") \ ENUM_ENTRY(IC_EVEX_L_W_KZ_B, 3, "requires EVEX_B, EVEX_KZ, L and W") \ ENUM_ENTRY(IC_EVEX_L_W_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L, W and XS prefix") \ ENUM_ENTRY(IC_EVEX_L_W_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L, W and XD prefix") \ ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L, W and OpSize") \ ENUM_ENTRY(IC_EVEX_L2_KZ_B, 3, "requires EVEX_B, EVEX_KZ and the L2 prefix") \ ENUM_ENTRY(IC_EVEX_L2_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ and the L2 and XS prefix")\ ENUM_ENTRY(IC_EVEX_L2_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ and the L2 and XD prefix")\ ENUM_ENTRY(IC_EVEX_L2_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L2, and OpSize") \ ENUM_ENTRY(IC_EVEX_L2_W_KZ_B, 3, "requires EVEX_B, EVEX_KZ, L2 and W") \ ENUM_ENTRY(IC_EVEX_L2_W_XS_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L2, W and XS prefix") \ ENUM_ENTRY(IC_EVEX_L2_W_XD_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L2, W and XD prefix") \ ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_KZ_B, 4, "requires EVEX_B, EVEX_KZ, L2, W and OpSize") \ ENUM_ENTRY(IC_EVEX_KZ, 1, "requires an EVEX_KZ prefix") \ ENUM_ENTRY(IC_EVEX_XS_KZ, 2, "requires EVEX_KZ and the XS prefix") \ ENUM_ENTRY(IC_EVEX_XD_KZ, 2, "requires EVEX_KZ and the XD prefix") \ ENUM_ENTRY(IC_EVEX_OPSIZE_KZ, 2, "requires EVEX_KZ and the OpSize prefix") \ ENUM_ENTRY(IC_EVEX_W_KZ, 3, "requires EVEX_KZ and the W prefix") \ ENUM_ENTRY(IC_EVEX_W_XS_KZ, 4, "requires EVEX_KZ, W, and XS prefix") \ ENUM_ENTRY(IC_EVEX_W_XD_KZ, 4, "requires EVEX_KZ, W, and XD prefix") \ ENUM_ENTRY(IC_EVEX_W_OPSIZE_KZ, 4, "requires EVEX_KZ, W, and OpSize") \ ENUM_ENTRY(IC_EVEX_L_KZ, 3, "requires EVEX_KZ and the L prefix") \ ENUM_ENTRY(IC_EVEX_L_XS_KZ, 4, "requires EVEX_KZ and the L and XS prefix")\ ENUM_ENTRY(IC_EVEX_L_XD_KZ, 4, "requires EVEX_KZ and the L and XD prefix")\ ENUM_ENTRY(IC_EVEX_L_OPSIZE_KZ, 4, "requires EVEX_KZ, L, and OpSize") \ ENUM_ENTRY(IC_EVEX_L_W_KZ, 3, "requires EVEX_KZ, L and W") \ ENUM_ENTRY(IC_EVEX_L_W_XS_KZ, 4, "requires EVEX_KZ, L, W and XS prefix") \ ENUM_ENTRY(IC_EVEX_L_W_XD_KZ, 4, "requires EVEX_KZ, L, W and XD prefix") \ ENUM_ENTRY(IC_EVEX_L_W_OPSIZE_KZ, 4, "requires EVEX_KZ, L, W and OpSize") \ ENUM_ENTRY(IC_EVEX_L2_KZ, 3, "requires EVEX_KZ and the L2 prefix") \ ENUM_ENTRY(IC_EVEX_L2_XS_KZ, 4, "requires EVEX_KZ and the L2 and XS prefix")\ ENUM_ENTRY(IC_EVEX_L2_XD_KZ, 4, "requires EVEX_KZ and the L2 and XD prefix")\ ENUM_ENTRY(IC_EVEX_L2_OPSIZE_KZ, 4, "requires EVEX_KZ, L2, and OpSize") \ ENUM_ENTRY(IC_EVEX_L2_W_KZ, 3, "requires EVEX_KZ, L2 and W") \ ENUM_ENTRY(IC_EVEX_L2_W_XS_KZ, 4, "requires EVEX_KZ, L2, W and XS prefix") \ ENUM_ENTRY(IC_EVEX_L2_W_XD_KZ, 4, "requires EVEX_KZ, L2, W and XD prefix") \ ENUM_ENTRY(IC_EVEX_L2_W_OPSIZE_KZ, 4, "requires EVEX_KZ, L2, W and OpSize") #define ENUM_ENTRY(n, r, d) n, enum InstructionContext { INSTRUCTION_CONTEXTS IC_max }; #undef ENUM_ENTRY // Opcode types, which determine which decode table to use, both in the Intel // manual and also for the decoder. enum OpcodeType { ONEBYTE = 0, TWOBYTE = 1, THREEBYTE_38 = 2, THREEBYTE_3A = 3, XOP8_MAP = 4, XOP9_MAP = 5, XOPA_MAP = 6, THREEDNOW_MAP = 7 }; // The following structs are used for the hierarchical decode table. After // determining the instruction's class (i.e., which IC_* constant applies to // it), the decoder reads the opcode. Some instructions require specific // values of the ModR/M byte, so the ModR/M byte indexes into the final table. // // If a ModR/M byte is not required, "required" is left unset, and the values // for each instructionID are identical. typedef uint16_t InstrUID; // ModRMDecisionType - describes the type of ModR/M decision, allowing the // consumer to determine the number of entries in it. // // MODRM_ONEENTRY - No matter what the value of the ModR/M byte is, the decoded // instruction is the same. // MODRM_SPLITRM - If the ModR/M byte is between 0x00 and 0xbf, the opcode // corresponds to one instruction; otherwise, it corresponds to // a different instruction. // MODRM_SPLITMISC- If the ModR/M byte is between 0x00 and 0xbf, ModR/M byte // divided by 8 is used to select instruction; otherwise, each // value of the ModR/M byte could correspond to a different // instruction. // MODRM_SPLITREG - ModR/M byte divided by 8 is used to select instruction. This // corresponds to instructions that use reg field as opcode // MODRM_FULL - Potentially, each value of the ModR/M byte could correspond // to a different instruction. #define MODRMTYPES \ ENUM_ENTRY(MODRM_ONEENTRY) \ ENUM_ENTRY(MODRM_SPLITRM) \ ENUM_ENTRY(MODRM_SPLITMISC) \ ENUM_ENTRY(MODRM_SPLITREG) \ ENUM_ENTRY(MODRM_FULL) #define ENUM_ENTRY(n) n, enum ModRMDecisionType { MODRMTYPES MODRM_max }; #undef ENUM_ENTRY #define CASE_ENCODING_RM \ case ENCODING_RM: \ case ENCODING_RM_CD2: \ case ENCODING_RM_CD4: \ case ENCODING_RM_CD8: \ case ENCODING_RM_CD16: \ case ENCODING_RM_CD32: \ case ENCODING_RM_CD64 #define CASE_ENCODING_VSIB \ case ENCODING_VSIB: \ case ENCODING_VSIB_CD2: \ case ENCODING_VSIB_CD4: \ case ENCODING_VSIB_CD8: \ case ENCODING_VSIB_CD16: \ case ENCODING_VSIB_CD32: \ case ENCODING_VSIB_CD64 // Physical encodings of instruction operands. #define ENCODINGS \ ENUM_ENTRY(ENCODING_NONE, "") \ ENUM_ENTRY(ENCODING_REG, "Register operand in ModR/M byte.") \ ENUM_ENTRY(ENCODING_RM, "R/M operand in ModR/M byte.") \ ENUM_ENTRY(ENCODING_RM_CD2, "R/M operand with CDisp scaling of 2") \ ENUM_ENTRY(ENCODING_RM_CD4, "R/M operand with CDisp scaling of 4") \ ENUM_ENTRY(ENCODING_RM_CD8, "R/M operand with CDisp scaling of 8") \ ENUM_ENTRY(ENCODING_RM_CD16,"R/M operand with CDisp scaling of 16") \ ENUM_ENTRY(ENCODING_RM_CD32,"R/M operand with CDisp scaling of 32") \ ENUM_ENTRY(ENCODING_RM_CD64,"R/M operand with CDisp scaling of 64") \ ENUM_ENTRY(ENCODING_VSIB, "VSIB operand in ModR/M byte.") \ ENUM_ENTRY(ENCODING_VSIB_CD2, "VSIB operand with CDisp scaling of 2") \ ENUM_ENTRY(ENCODING_VSIB_CD4, "VSIB operand with CDisp scaling of 4") \ ENUM_ENTRY(ENCODING_VSIB_CD8, "VSIB operand with CDisp scaling of 8") \ ENUM_ENTRY(ENCODING_VSIB_CD16,"VSIB operand with CDisp scaling of 16") \ ENUM_ENTRY(ENCODING_VSIB_CD32,"VSIB operand with CDisp scaling of 32") \ ENUM_ENTRY(ENCODING_VSIB_CD64,"VSIB operand with CDisp scaling of 64") \ ENUM_ENTRY(ENCODING_VVVV, "Register operand in VEX.vvvv byte.") \ ENUM_ENTRY(ENCODING_WRITEMASK, "Register operand in EVEX.aaa byte.") \ ENUM_ENTRY(ENCODING_IB, "1-byte immediate") \ ENUM_ENTRY(ENCODING_IW, "2-byte") \ ENUM_ENTRY(ENCODING_ID, "4-byte") \ ENUM_ENTRY(ENCODING_IO, "8-byte") \ ENUM_ENTRY(ENCODING_RB, "(AL..DIL, R8L..R15L) Register code added to " \ "the opcode byte") \ ENUM_ENTRY(ENCODING_RW, "(AX..DI, R8W..R15W)") \ ENUM_ENTRY(ENCODING_RD, "(EAX..EDI, R8D..R15D)") \ ENUM_ENTRY(ENCODING_RO, "(RAX..RDI, R8..R15)") \ ENUM_ENTRY(ENCODING_FP, "Position on floating-point stack in ModR/M " \ "byte.") \ \ ENUM_ENTRY(ENCODING_Iv, "Immediate of operand size") \ ENUM_ENTRY(ENCODING_Ia, "Immediate of address size") \ ENUM_ENTRY(ENCODING_IRC, "Immediate for static rounding control") \ ENUM_ENTRY(ENCODING_Rv, "Register code of operand size added to the " \ "opcode byte") \ ENUM_ENTRY(ENCODING_CC, "Condition code encoded in opcode") \ ENUM_ENTRY(ENCODING_DUP, "Duplicate of another operand; ID is encoded " \ "in type") \ ENUM_ENTRY(ENCODING_SI, "Source index; encoded in OpSize/Adsize prefix") \ ENUM_ENTRY(ENCODING_DI, "Destination index; encoded in prefixes") #define ENUM_ENTRY(n, d) n, enum OperandEncoding { ENCODINGS ENCODING_max }; #undef ENUM_ENTRY // Semantic interpretations of instruction operands. #define TYPES \ ENUM_ENTRY(TYPE_NONE, "") \ ENUM_ENTRY(TYPE_REL, "immediate address") \ ENUM_ENTRY(TYPE_R8, "1-byte register operand") \ ENUM_ENTRY(TYPE_R16, "2-byte") \ ENUM_ENTRY(TYPE_R32, "4-byte") \ ENUM_ENTRY(TYPE_R64, "8-byte") \ ENUM_ENTRY(TYPE_IMM, "immediate operand") \ ENUM_ENTRY(TYPE_UIMM8, "1-byte unsigned immediate operand") \ ENUM_ENTRY(TYPE_M, "Memory operand") \ ENUM_ENTRY(TYPE_MVSIBX, "Memory operand using XMM index") \ ENUM_ENTRY(TYPE_MVSIBY, "Memory operand using YMM index") \ ENUM_ENTRY(TYPE_MVSIBZ, "Memory operand using ZMM index") \ ENUM_ENTRY(TYPE_SRCIDX, "memory at source index") \ ENUM_ENTRY(TYPE_DSTIDX, "memory at destination index") \ ENUM_ENTRY(TYPE_MOFFS, "memory offset (relative to segment base)") \ ENUM_ENTRY(TYPE_ST, "Position on the floating-point stack") \ ENUM_ENTRY(TYPE_MM64, "8-byte MMX register") \ ENUM_ENTRY(TYPE_XMM, "16-byte") \ ENUM_ENTRY(TYPE_YMM, "32-byte") \ ENUM_ENTRY(TYPE_ZMM, "64-byte") \ ENUM_ENTRY(TYPE_VK, "mask register") \ ENUM_ENTRY(TYPE_VK_PAIR, "mask register pair") \ ENUM_ENTRY(TYPE_SEGMENTREG, "Segment register operand") \ ENUM_ENTRY(TYPE_DEBUGREG, "Debug register operand") \ ENUM_ENTRY(TYPE_CONTROLREG, "Control register operand") \ ENUM_ENTRY(TYPE_BNDR, "MPX bounds register") \ \ ENUM_ENTRY(TYPE_Rv, "Register operand of operand size") \ ENUM_ENTRY(TYPE_RELv, "Immediate address of operand size") \ ENUM_ENTRY(TYPE_DUP0, "Duplicate of operand 0") \ ENUM_ENTRY(TYPE_DUP1, "operand 1") \ ENUM_ENTRY(TYPE_DUP2, "operand 2") \ ENUM_ENTRY(TYPE_DUP3, "operand 3") \ ENUM_ENTRY(TYPE_DUP4, "operand 4") \ #define ENUM_ENTRY(n, d) n, enum OperandType { TYPES TYPE_max }; #undef ENUM_ENTRY /// The specification for how to extract and interpret one operand. struct OperandSpecifier { uint8_t encoding; uint8_t type; }; static const unsigned X86_MAX_OPERANDS = 6; /// Decoding mode for the Intel disassembler. 16-bit, 32-bit, and 64-bit mode /// are supported, and represent real mode, IA-32e, and IA-32e in 64-bit mode, /// respectively. enum DisassemblerMode { MODE_16BIT, MODE_32BIT, MODE_64BIT }; } // namespace X86Disassembler } // namespace llvm #endif