1 /* insns.h header file for insns.c
3 * The Netwide Assembler is copyright (C) 1996 Simon Tatham and
4 * Julian Hall. All rights reserved. The software is
5 * redistributable under the license given in the file "LICENSE"
6 * distributed in the NASM archive.
16 enum opcode opcode
; /* the token, passed from "parser.c" */
17 int operands
; /* number of operands */
18 opflags_t opd
[MAX_OPERANDS
]; /* bit flags for operand types */
19 const uint8_t *code
; /* the code it assembles to */
20 uint32_t flags
; /* some flags */
23 /* Disassembler table structure */
24 /* If n == -1, then p points to another table of 256
25 struct disasm_index, otherwise p points to a list of n
26 struct itemplates to consider. */
32 /* Tables for the assembler and disassembler, respectively */
33 extern const struct itemplate
* const nasm_instructions
[];
34 extern const struct disasm_index itable
[256];
35 extern const struct disasm_index
* const itable_VEX
[32][8];
37 /* Common table for the byte codes */
38 extern const uint8_t nasm_bytecodes
[];
41 * this define is used to signify the end of an itemplate
43 #define ITEMPLATE_END {-1,-1,{-1,-1,-1},NULL,0}
46 * Instruction template flags. These specify which processor
47 * targets the instruction is eligible for, whether it is
48 * privileged or undocumented, and also specify extra error
49 * checking on the matching of the instruction.
51 * IF_SM stands for Size Match: any operand whose size is not
52 * explicitly specified by the template is `really' intended to be
53 * the same size as the first size-specified operand.
54 * Non-specification is tolerated in the input instruction, but
55 * _wrong_ specification is not.
57 * IF_SM2 invokes Size Match on only the first _two_ operands, for
58 * three-operand instructions such as SHLD: it implies that the
59 * first two operands must match in size, but that the third is
60 * required to be _unspecified_.
62 * IF_SB invokes Size Byte: operands with unspecified size in the
63 * template are really bytes, and so no non-byte specification in
64 * the input instruction will be tolerated. IF_SW similarly invokes
65 * Size Word, and IF_SD invokes Size Doubleword.
67 * (The default state if neither IF_SM nor IF_SM2 is specified is
68 * that any operand with unspecified size in the template is
69 * required to have unspecified size in the instruction too...)
72 #define IF_SM 0x00000001UL /* size match */
73 #define IF_SM2 0x00000002UL /* size match first two operands */
74 #define IF_SB 0x00000004UL /* unsized operands can't be non-byte */
75 #define IF_SW 0x00000008UL /* unsized operands can't be non-word */
76 #define IF_SD 0x0000000CUL /* unsized operands can't be non-dword */
77 #define IF_SQ 0x00000010UL /* unsized operands can't be non-qword */
78 #define IF_SO 0x00000014UL /* unsized operands can't be non-oword */
79 #define IF_SY 0x00000018UL /* unsized operands can't be non-yword */
80 #define IF_SZ 0x0000001CUL /* unsized operands must match the bitsize */
81 #define IF_SMASK 0x0000001CUL /* mask for unsized argument size */
82 #define IF_AR0 0x00000020UL /* SB, SW, SD applies to argument 0 */
83 #define IF_AR1 0x00000040UL /* SB, SW, SD applies to argument 1 */
84 #define IF_AR2 0x00000060UL /* SB, SW, SD applies to argument 2 */
85 #define IF_AR3 0x00000080UL /* SB, SW, SD applies to argument 3 */
86 #define IF_ARMASK 0x000000E0UL /* mask for unsized argument spec */
87 #define IF_ARSHFT 5 /* LSB in IF_ARMASK */
88 #define IF_PRIV 0x00000100UL /* it's a privileged instruction */
89 #define IF_SMM 0x00000200UL /* it's only valid in SMM */
90 #define IF_PROT 0x00000400UL /* it's protected mode only */
91 #define IF_NOLONG 0x00000800UL /* it's not available in long mode */
92 #define IF_UNDOC 0x00001000UL /* it's an undocumented instruction */
93 #define IF_FPU 0x00002000UL /* it's an FPU instruction */
94 #define IF_MMX 0x00004000UL /* it's an MMX instruction */
95 #define IF_3DNOW 0x00008000UL /* it's a 3DNow! instruction */
96 #define IF_SSE 0x00010000UL /* it's a SSE (KNI, MMX2) instruction */
97 #define IF_SSE2 0x00020000UL /* it's a SSE2 instruction */
98 #define IF_SSE3 0x00040000UL /* it's a SSE3 (PNI) instruction */
99 #define IF_VMX 0x00080000UL /* it's a VMX instruction */
100 #define IF_LONG 0x00100000UL /* long mode instruction */
101 #define IF_SSSE3 0x00200000UL /* it's an SSSE3 instruction */
102 #define IF_SSE4A 0x00400000UL /* AMD SSE4a */
103 #define IF_SSE41 0x00800000UL /* it's an SSE4.1 instruction */
104 #define IF_SSE42 0x00800000UL /* HACK NEED TO REORGANIZE THESE BITS */
105 #define IF_SSE5 0x00800000UL /* HACK NEED TO REORGANIZE THESE BITS */
106 #define IF_AVX 0x00800000UL /* HACK NEED TO REORGANIZE THESE BITS */
107 #define IF_FMA 0x00800000UL /* HACK NEED TO REORGANIZE THESE BITS */
108 #define IF_PMASK 0xFF000000UL /* the mask for processor types */
109 #define IF_PLEVEL 0x0F000000UL /* the mask for processor instr. level */
110 /* also the highest possible processor */
111 #define IF_PFMASK 0xF01FFF00UL /* the mask for disassembly "prefer" */
112 #define IF_8086 0x00000000UL /* 8086 instruction */
113 #define IF_186 0x01000000UL /* 186+ instruction */
114 #define IF_286 0x02000000UL /* 286+ instruction */
115 #define IF_386 0x03000000UL /* 386+ instruction */
116 #define IF_486 0x04000000UL /* 486+ instruction */
117 #define IF_PENT 0x05000000UL /* Pentium instruction */
118 #define IF_P6 0x06000000UL /* P6 instruction */
119 #define IF_KATMAI 0x07000000UL /* Katmai instructions */
120 #define IF_WILLAMETTE 0x08000000UL /* Willamette instructions */
121 #define IF_PRESCOTT 0x09000000UL /* Prescott instructions */
122 #define IF_X86_64 0x0A000000UL /* x86-64 instruction (long or legacy mode) */
123 #define IF_NEHALEM 0x0B000000UL /* Nehalem instruction */
124 #define IF_WESTMERE 0x0C000000UL /* Westmere instruction */
125 #define IF_SANDYBRIDGE 0x0D000000UL /* Sandy Bridge instruction */
126 #define IF_X64 (IF_LONG|IF_X86_64)
127 #define IF_IA64 0x0F000000UL /* IA64 instructions (in x86 mode) */
128 #define IF_CYRIX 0x10000000UL /* Cyrix-specific instruction */
129 #define IF_AMD 0x20000000UL /* AMD-specific instruction */
