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88 lines
4.1 KiB
C
88 lines
4.1 KiB
C
/* insns.h header file for insns.c
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* $Id$
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*
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* The Netwide Assembler is copyright (C) 1996 Simon Tatham and
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* Julian Hall. All rights reserved. The software is
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* redistributable under the licence given in the file "Licence"
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* distributed in the NASM archive.
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*/
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#ifndef NASM_INSNS_H
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#define NASM_INSNS_H
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struct itemplate {
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int opcode; /* the token, passed from "parser.c" */
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int operands; /* number of operands */
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long opd[3]; /* bit flags for operand types */
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const char *code; /* the code it assembles to */
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unsigned long flags; /* some flags */
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};
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/*
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* this define is used to signify the end of an itemplate
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*/
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#define ITEMPLATE_END {-1,-1,{-1,-1,-1},NULL,0}
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/*
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* Instruction template flags. These specify which processor
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* targets the instruction is eligible for, whether it is
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* privileged or undocumented, and also specify extra error
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* checking on the matching of the instruction.
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*
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* IF_SM stands for Size Match: any operand whose size is not
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* explicitly specified by the template is `really' intended to be
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* the same size as the first size-specified operand.
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* Non-specification is tolerated in the input instruction, but
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* _wrong_ specification is not.
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*
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* IF_SM2 invokes Size Match on only the first _two_ operands, for
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* three-operand instructions such as SHLD: it implies that the
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* first two operands must match in size, but that the third is
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* required to be _unspecified_.
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*
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* IF_SB invokes Size Byte: operands with unspecified size in the
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* template are really bytes, and so no non-byte specification in
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* the input instruction will be tolerated. IF_SW similarly invokes
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* Size Word, and IF_SD invokes Size Doubleword.
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*
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* (The default state if neither IF_SM nor IF_SM2 is specified is
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* that any operand with unspecified size in the template is
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* required to have unspecified size in the instruction too...)
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*/
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#define IF_SM 0x00000001UL /* size match */
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#define IF_SM2 0x00000002UL /* size match first two operands */
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#define IF_SB 0x00000004UL /* unsized operands can't be non-byte */
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#define IF_SW 0x00000008UL /* unsized operands can't be non-word */
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#define IF_SD 0x00000010UL /* unsized operands can't be nondword */
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#define IF_AR0 0x00000020UL /* SB, SW, SD applies to argument 0 */
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#define IF_AR1 0x00000040UL /* SB, SW, SD applies to argument 1 */
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#define IF_AR2 0x00000060UL /* SB, SW, SD applies to argument 2 */
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#define IF_ARMASK 0x00000060UL /* mask for unsized argument spec */
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#define IF_PRIV 0x00000100UL /* it's a privileged instruction */
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#define IF_SMM 0x00000200UL /* it's only valid in SMM */
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#define IF_PROT 0x00000400UL /* it's protected mode only */
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#define IF_UNDOC 0x00001000UL /* it's an undocumented instruction */
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#define IF_FPU 0x00002000UL /* it's an FPU instruction */
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#define IF_MMX 0x00004000UL /* it's an MMX instruction */
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#define IF_3DNOW 0x00008000UL /* it's a 3DNow! instruction */
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#define IF_SSE 0x00010000UL /* it's a SSE (KNI, MMX2) instruction */
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#define IF_SSE2 0x00020000UL /* it's a SSE2 instruction */
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#define IF_PMASK 0xFF000000UL /* the mask for processor types */
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#define IF_PLEVEL 0x0F000000UL /* the mask for processor instr. level */
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/* also the highest possible processor */
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#define IF_PFMASK 0xF001FF00UL /* the mask for disassembly "prefer" */
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#define IF_8086 0x00000000UL /* 8086 instruction */
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#define IF_186 0x01000000UL /* 186+ instruction */
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#define IF_286 0x02000000UL /* 286+ instruction */
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#define IF_386 0x03000000UL /* 386+ instruction */
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#define IF_486 0x04000000UL /* 486+ instruction */
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#define IF_PENT 0x05000000UL /* Pentium instruction */
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#define IF_P6 0x06000000UL /* P6 instruction */
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#define IF_KATMAI 0x07000000UL /* Katmai instructions */
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#define IF_WILLAMETTE 0x08000000UL /* Willamette instructions */
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#define IF_CYRIX 0x10000000UL /* Cyrix-specific instruction */
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#define IF_AMD 0x20000000UL /* AMD-specific instruction */
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#endif
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