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/* insns.h header file for insns.c
*
* The Netwide Assembler is copyright (C) 1996 Simon Tatham and
* Julian Hall. All rights reserved. The software is
* redistributable under the license given in the file "LICENSE"
* distributed in the NASM archive.
*/
#ifndef NASM_INSNS_H
#define NASM_INSNS_H
#include "nasm.h"
#include "tokens.h"
struct itemplate {
enum opcode opcode; /* the token, passed from "parser.c" */
int operands; /* number of operands */
opflags_t opd[MAX_OPERANDS]; /* bit flags for operand types */
const uint8_t *code; /* the code it assembles to */
uint32_t flags; /* some flags */
};
/* Disassembler table structure */
/* If n == -1, then p points to another table of 256
struct disasm_index, otherwise p points to a list of n
struct itemplates to consider. */
struct disasm_index {
const void *p;
int n;
};
/* Tables for the assembler and disassembler, respectively */
extern const struct itemplate * const nasm_instructions[];
extern const struct disasm_index itable[256];
extern const struct disasm_index * const itable_vex[2][32][4];
/* Common table for the byte codes */
extern const uint8_t nasm_bytecodes[];
/*
* this define is used to signify the end of an itemplate
*/
#define ITEMPLATE_END {-1,-1,{-1,-1,-1},NULL,0}
/*
* Instruction template flags. These specify which processor
* targets the instruction is eligible for, whether it is
* privileged or undocumented, and also specify extra error
* checking on the matching of the instruction.
*
* IF_SM stands for Size Match: any operand whose size is not
* explicitly specified by the template is `really' intended to be
* the same size as the first size-specified operand.
* Non-specification is tolerated in the input instruction, but
* _wrong_ specification is not.
*
* IF_SM2 invokes Size Match on only the first _two_ operands, for
* three-operand instructions such as SHLD: it implies that the
* first two operands must match in size, but that the third is
* required to be _unspecified_.
*
* IF_SB invokes Size Byte: operands with unspecified size in the
* template are really bytes, and so no non-byte specification in
* the input instruction will be tolerated. IF_SW similarly invokes
* Size Word, and IF_SD invokes Size Doubleword.
*
* (The default state if neither IF_SM nor IF_SM2 is specified is
* that any operand with unspecified size in the template is
* required to have unspecified size in the instruction too...)
*/
#define IF_SM 0x00000001UL /* size match */
#define IF_SM2 0x00000002UL /* size match first two operands */
#define IF_SB 0x00000004UL /* unsized operands can't be non-byte */
#define IF_SW 0x00000008UL /* unsized operands can't be non-word */
#define IF_SD 0x0000000CUL /* unsized operands can't be non-dword */
#define IF_SQ 0x00000010UL /* unsized operands can't be non-qword */
#define IF_SO 0x00000014UL /* unsized operands can't be non-oword */
#define IF_SY 0x00000018UL /* unsized operands can't be non-yword */
#define IF_SZ 0x00000038UL /* unsized operands must match the bitsize */
#define IF_SX 0x0000003CUL /* unsized operands not allowed */
#define IF_SMASK 0x0000003CUL /* mask for unsized argument size */
#define IF_AR0 0x00000040UL /* SB, SW, SD applies to argument 0 */
#define IF_AR1 0x00000080UL /* SB, SW, SD applies to argument 1 */
#define IF_AR2 0x000000C0UL /* SB, SW, SD applies to argument 2 */
#define IF_AR3 0x00000100UL /* SB, SW, SD applies to argument 3 */
#define IF_AR4 0x00000140UL /* SB, SW, SD applies to argument 4 */
#define IF_ARMASK 0x000001C0UL /* mask for unsized argument spec */
#define IF_ARSHFT 6 /* LSB in IF_ARMASK */
/* The next 3 bits aren't actually used for anything */
#define IF_PRIV 0x00000000UL /* it's a privileged instruction */
#define IF_SMM 0x00000000UL /* it's only valid in SMM */
#define IF_PROT 0x00000000UL /* it's protected mode only */
#define IF_NOLONG 0x00000800UL /* it's not available in long mode */
#define IF_UNDOC 0x00001000UL /* it's an undocumented instruction */
#define IF_FPU 0x00002000UL /* it's an FPU instruction */
#define IF_MMX 0x00004000UL /* it's an MMX instruction */
#define IF_3DNOW 0x00008000UL /* it's a 3DNow! instruction */
#define IF_SSE 0x00010000UL /* it's a SSE (KNI, MMX2) instruction */
#define IF_SSE2 0x00020000UL /* it's a SSE2 instruction */
#define IF_SSE3 0x00040000UL /* it's a SSE3 (PNI) instruction */
#define IF_VMX 0x00080000UL /* it's a VMX instruction */
#define IF_LONG 0x00100000UL /* long mode instruction */
#define IF_SSSE3 0x00200000UL /* it's an SSSE3 instruction */
#define IF_SSE4A 0x00400000UL /* AMD SSE4a */
#define IF_SSE41 0x00800000UL /* it's an SSE4.1 instruction */
#define IF_SSE42 0x00800000UL /* HACK NEED TO REORGANIZE THESE BITS */
#define IF_SSE5 0x00800000UL /* HACK NEED TO REORGANIZE THESE BITS */
#define IF_AVX 0x00800000UL /* HACK NEED TO REORGANIZE THESE BITS */
#define IF_FMA 0x00800000UL /* HACK NEED TO REORGANIZE THESE BITS */
#define IF_PMASK 0xFF000000UL /* the mask for processor types */
#define IF_PLEVEL 0x0F000000UL /* the mask for processor instr. level */
/* also the highest possible processor */
#define IF_PFMASK 0xF01FFF00UL /* the mask for disassembly "prefer" */
#define IF_8086 0x00000000UL /* 8086 instruction */
#define IF_186 0x01000000UL /* 186+ instruction */
#define IF_286 0x02000000UL /* 286+ instruction */
#define IF_386 0x03000000UL /* 386+ instruction */
#define IF_486 0x04000000UL /* 486+ instruction */
#define IF_PENT 0x05000000UL /* Pentium instruction */
#define IF_P6 0x06000000UL /* P6 instruction */
#define IF_KATMAI 0x07000000UL /* Katmai instructions */
#define IF_WILLAMETTE 0x08000000UL /* Willamette instructions */
#define IF_PRESCOTT 0x09000000UL /* Prescott instructions */
#define IF_X86_64 0x0A000000UL /* x86-64 instruction (long or legacy mode) */
#define IF_NEHALEM 0x0B000000UL /* Nehalem instruction */
#define IF_WESTMERE 0x0C000000UL /* Westmere instruction */
#define IF_SANDYBRIDGE 0x0D000000UL /* Sandy Bridge instruction */
#define IF_FUTURE 0x0E000000UL /* Future processor (not yet disclosed) */
#define IF_X64 (IF_LONG|IF_X86_64)
#define IF_IA64 0x0F000000UL /* IA64 instructions (in x86 mode) */
#define IF_CYRIX 0x10000000UL /* Cyrix-specific instruction */
#define IF_AMD 0x20000000UL /* AMD-specific instruction */
#endif
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