/* ----------------------------------------------------------------------- * * * Copyright 1996-2009 The NASM Authors - All Rights Reserved * See the file AUTHORS included with the NASM distribution for * the specific copyright holders. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following * conditions are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * ----------------------------------------------------------------------- */ /* * opflags.h - operand flags */ #ifndef NASM_OPFLAGS_H #define NASM_OPFLAGS_H #include "compiler.h" /* * Here we define the operand types. These are implemented as bit * masks, since some are subsets of others; e.g. AX in a MOV * instruction is a special operand type, whereas AX in other * contexts is just another 16-bit register. (Also, consider CL in * shift instructions, DX in OUT, etc.) * * The basic concept here is that * (class & ~operand) == 0 * * if and only if "operand" belongs to class type "class". * * The bits are assigned as follows: * * Bits 0-7, 23, 29: sizes * 0: 8 bits (BYTE) * 1: 16 bits (WORD) * 2: 32 bits (DWORD) * 3: 64 bits (QWORD) * 4: 80 bits (TWORD) * 5: FAR * 6: NEAR * 7: SHORT * 23: 256 bits (YWORD) * 29: 128 bits (OWORD) * * Bits 8-11 modifiers * 8: TO * 9: COLON * 10: STRICT * 11: (reserved) * * Bits 12-15: type of operand * 12: REGISTER * 13: IMMEDIATE * 14: MEMORY (always has REGMEM attribute as well) * 15: REGMEM (valid EA operand) * * Bits 16-19, 28: subclasses * With REG_CDT: * 16: REG_CREG (CRx) * 17: REG_DREG (DRx) * 18: REG_TREG (TRx) * With REG_GPR: * 16: REG_ACCUM (AL, AX, EAX, RAX) * 17: REG_COUNT (CL, CX, ECX, RCX) * 18: REG_DATA (DL, DX, EDX, RDX) * 19: REG_HIGH (AH, CH, DH, BH) * 28: REG_NOTACC (not REG_ACCUM) * * With REG_SREG: * 16: REG_CS * 17: REG_DESS (DS, ES, SS) * 18: REG_FSGS * 19: REG_SEG67 * * With FPUREG: * 16: FPU0 * * With XMMREG: * 16: XMM0 * * With YMMREG: * 16: YMM0 * * With MEMORY: * 16: MEM_OFFS (this is a simple offset) * 17: IP_REL (IP-relative offset) * * With IMMEDIATE: * 16: UNITY (1) * 17: BYTENESS16 (-128..127) * 18: BYTENESS32 (-128..127) * 19: BYTENESS64 (-128..127) * * Bits 20-22, 24-27: register classes * 20: REG_CDT (CRx, DRx, TRx) * 21: RM_GPR (REG_GPR) (integer register) * 22: REG_SREG * 24: FPUREG * 25: RM_MMX (MMXREG) * 26: RM_XMM (XMMREG) * 27: RM_YMM (YMMREG) * * Bit 31 is currently unallocated. * * 30: SAME_AS * Special flag only used in instruction patterns; means this operand * has to be identical to another operand. Currently only supported * for registers. */ typedef uint32_t opflags_t; /* Size, and other attributes, of the operand */ #define BITS8 0x00000001U #define BITS16 0x00000002U #define BITS32 0x00000004U #define BITS64 0x00000008U /* x64 and FPU only */ #define BITS80 0x00000010U /* FPU only */ #define BITS128 0x20000000U #define BITS256 0x00800000U #define FAR 0x00000020U /* grotty: this means 16:16 or */ /* 16:32, like in CALL/JMP */ #define NEAR 0x00000040U #define SHORT 0x00000080U /* and this means what it says :) */ #define SIZE_MASK 0x208000FFU /* all the size attributes */ /* Modifiers */ #define MODIFIER_MASK 0x00000f00U #define TO 0x00000100U /* reverse effect in FADD, FSUB &c */ #define COLON 0x00000200U /* operand is followed by a colon */ #define STRICT 0x00000400U /* do not optimize this operand */ /* Type of operand: memory reference, register, etc. */ #define OPTYPE_MASK 0x0000f000U #define REGISTER 0x00001000U /* register number in 'basereg' */ #define IMMEDIATE 0x00002000U #define MEMORY 0x0000c000U #define REGMEM 0x00008000U /* for r/m, ie EA, operands */ #define is_class(class, op) (!((opflags_t)(class) & ~(opflags_t)(op))) /* Register classes */ #define REG_EA 0x00009000U /* 'normal' reg, qualifies as EA */ #define RM_GPR 0x00208000U /* integer operand */ #define REG_GPR 0x00209000U /* integer register */ #define REG8 0x00209001U /* 8-bit GPR */ #define REG16 0x00209002U /* 16-bit GPR */ #define REG32 0x00209004U /* 32-bit GPR */ #define REG64 0x00209008U /* 64-bit GPR */ #define FPUREG 0x01001000U /* floating point stack registers */ #define FPU0 0x01011000U /* FPU stack register zero */ #define RM_MMX 0x02008000U /* MMX operand */ #define MMXREG 0x02009000U /* MMX register */ #define RM_XMM 0x04008000U /* XMM (SSE) operand */ #define XMMREG 0x04009000U /* XMM (SSE) register */ #define XMM0 0x04019000U /* XMM register zero */ #define RM_YMM 0x08008000U /* YMM (AVX) operand */ #define YMMREG 0x08009000U /* YMM (AVX) register */ #define YMM0 0x08019000U /* YMM register zero */ #define REG_CDT 0x00101004U /* CRn, DRn and TRn */ #define REG_CREG 0x00111004U /* CRn */ #define REG_DREG 0x00121004U /* DRn */ #define REG_TREG 0x00141004U /* TRn */ #define REG_SREG 0x00401002U /* any segment register */ #define REG_CS 0x00411002U /* CS */ #define REG_DESS 0x00421002U /* DS, ES, SS */ #define REG_FSGS 0x00441002U /* FS, GS */ #define REG_SEG67 0x00481002U /* Unimplemented segment registers */ #define REG_RIP 0x00801008U /* RIP relative addressing */ #define REG_EIP 0x00801004U /* EIP relative addressing */ /* Special GPRs */ #define REG_SMASK 0x100f0000U /* a mask for the following */ #define REG_ACCUM 0x00219000U /* accumulator: AL, AX, EAX, RAX */ #define REG_AL 0x00219001U #define REG_AX 0x00219002U #define REG_EAX 0x00219004U #define REG_RAX 0x00219008U #define REG_COUNT 0x10229000U /* counter: CL, CX, ECX, RCX */ #define REG_CL 0x10229001U #define REG_CX 0x10229002U #define REG_ECX 0x10229004U #define REG_RCX 0x10229008U #define REG_DL 0x10249001U /* data: DL, DX, EDX, RDX */ #define REG_DX 0x10249002U #define REG_EDX 0x10249004U #define REG_RDX 0x10249008U #define REG_HIGH 0x10289001U /* high regs: AH, CH, DH, BH */ #define REG_NOTACC 0x10000000U /* non-accumulator register */ #define REG8NA 0x10209001U /* 8-bit non-acc GPR */ #define REG16NA 0x10209002U /* 16-bit non-acc GPR */ #define REG32NA 0x10209004U /* 32-bit non-acc GPR */ #define REG64NA 0x10209008U /* 64-bit non-acc GPR */ /* special types of EAs */ #define MEM_OFFS 0x0001c000U /* simple [address] offset - absolute! */ #define IP_REL 0x0002c000U /* IP-relative offset */ /* memory which matches any type of r/m operand */ #define MEMORY_ANY (MEMORY|RM_GPR|RM_MMX|RM_XMM|RM_YMM) /* special type of immediate operand */ #define UNITY 0x00012000U /* for shift/rotate instructions */ #define SBYTE16 0x00022000U /* for op r16,immediate instrs. */ #define SBYTE32 0x00042000U /* for op r32,immediate instrs. */ #define SBYTE64 0x00082000U /* for op r64,immediate instrs. */ #define BYTENESS 0x000e0000U /* for testing for byteness */ /* special flags */ #define SAME_AS 0x40000000U #endif /* NASM_OPFLAGS_H */