/* 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" /* if changed, ITEMPLATE_END should be also changed accordingly */ 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 */ decoflags_t deco[MAX_OPERANDS]; /* bit flags for operand decorators */ const uint8_t *code; /* the code it assembles to */ iflags_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[NASM_VEX_CLASSES][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,-1,-1},{-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...) * * iflags_t is defined to store these flags. */ #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 0x0000001CUL /* unsized operands can't be non-zword */ #define IF_SIZE 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 */ #define IF_OPT 0x00000200UL /* optimizing assembly only */ /* 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_LOCK 0x00000400UL /* lockable if operand 0 is memory */ #define IF_NOLONG 0x00000800UL /* it's not available in long mode */ #define IF_LONG 0x00001000UL /* long mode instruction */ #define IF_NOHLE 0x00002000UL /* HLE prefixes forbidden */ /* These flags are currently not used for anything - intended for insn set */ #define IF_UNDOC 0x8000000000UL /* it's an undocumented instruction */ #define IF_HLE 0x4000000000UL /* HACK NEED TO REORGANIZE THESE BITS */ #define IF_FPU 0x0100000000UL /* it's an FPU instruction */ #define IF_MMX 0x0200000000UL /* it's an MMX instruction */ #define IF_3DNOW 0x0300000000UL /* it's a 3DNow! instruction */ #define IF_SSE 0x0400000000UL /* it's a SSE (KNI, MMX2) instruction */ #define IF_SSE2 0x0500000000UL /* it's a SSE2 instruction */ #define IF_SSE3 0x0600000000UL /* it's a SSE3 (PNI) instruction */ #define IF_VMX 0x0700000000UL /* it's a VMX instruction */ #define IF_SSSE3 0x0800000000UL /* it's an SSSE3 instruction */ #define IF_SSE4A 0x0900000000UL /* AMD SSE4a */ #define IF_SSE41 0x0A00000000UL /* it's an SSE4.1 instruction */ #define IF_SSE42 0x0B00000000UL /* HACK NEED TO REORGANIZE THESE BITS */ #define IF_SSE5 0x0C00000000UL /* HACK NEED TO REORGANIZE THESE BITS */ #define IF_AVX 0x0D00000000UL /* it's an AVX (128b) instruction */ #define IF_AVX2 0x0E00000000UL /* it's an AVX2 (256b) instruction */ #define IF_AVX512 0x0F00000000UL /* it's an AVX-512 (512b) instruction */ #define IF_FMA 0x1000000000UL /* HACK NEED TO REORGANIZE THESE BITS */ #define IF_BMI1 0x1100000000UL /* HACK NEED TO REORGANIZE THESE BITS */ #define IF_BMI2 0x1200000000UL /* HACK NEED TO REORGANIZE THESE BITS */ #define IF_TBM 0x1300000000UL /* HACK NEED TO REORGANIZE THESE BITS */ #define IF_RTM 0x1400000000UL /* HACK NEED TO REORGANIZE THESE BITS */ #define IF_INVPCID 0x1500000000UL /* HACK NEED TO REORGANIZE THESE BITS */ #define IF_INSMASK 0xFF00000000UL /* the mask for instruction set types */ #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 0xFFF0000000UL /* 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 /* NASM_INSNS_H */