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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 licence given in the file "Licence"
* distributed in the NASM archive.
*/
#ifndef NASM_INSNS_H
#define NASM_INSNS_H
struct itemplate {
int opcode; /* the token, passed from "parser.c" */
int operands; /* number of operands */
long opd[3]; /* bit flags for operand types */
char *code; /* the code it assembles to */
unsigned long flags; /* some flags */
};
/*
* 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 0x00000010UL /* unsized operands can't be nondword */
#define IF_PRIV 0x00000100UL /* it's a privileged instruction */
#define IF_SMM 0x00000200UL /* it's only valid in SMM */
#define IF_PROT 0x00000400UL /* it's protected mode only */
#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_PMASK 0xFF000000UL /* the mask for processor types */
#define IF_PFMASK 0xF001FF00UL /* 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_CYRIX 0x10000000UL /* Cyrix-specific instruction */
#define IF_AMD 0x20000000UL /* AMD-specific instruction */
#endif
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