/*      $OpenBSD: aicasm_insformat.h,v 1.4 2003/12/24 23:27:55 krw Exp $        */
/*      $NetBSD: aicasm_insformat.h,v 1.1 2003/04/19 19:26:11 fvdl Exp $        */

/*
 * Instruction formats for the sequencer program downloaded to
 * Aic7xxx SCSI host adapters
 *
 * Copyright (c) 1997, 1998, 2000 Justin T. Gibbs.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * 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 MERCHANTIBILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
 *
 * $FreeBSD: src/sys/dev/aic7xxx/aicasm/aicasm_insformat.h,v 1.8 2002/11/27 07:06:43 scottl Exp $
 */

struct ins_format1 {
#if BYTE_ORDER == LITTLE_ENDIAN
        uint32_t        immediate       : 8,
                        source          : 9,
                        destination     : 9,
                        ret             : 1,
                        opcode          : 4,
                        parity          : 1;
#else
        uint32_t        parity          : 1,
                        opcode          : 4,
                        ret             : 1,
                        destination     : 9,
                        source          : 9,
                        immediate       : 8;
#endif
};

struct ins_format2 {
#if BYTE_ORDER == LITTLE_ENDIAN
        uint32_t        shift_control   : 8,
                        source          : 9,
                        destination     : 9,
                        ret             : 1,
                        opcode          : 4,
                        parity          : 1;
#else
        uint32_t        parity          : 1,
                        opcode          : 4,
                        ret             : 1,
                        destination     : 9,
                        source          : 9,
                        shift_control   : 8;
#endif
};

struct ins_format3 {
#if BYTE_ORDER == LITTLE_ENDIAN
        uint32_t        immediate       : 8,
                        source          : 9,
                        address         : 10,
                        opcode          : 4,
                        parity          : 1;
#else
        uint32_t        parity          : 1,
                        opcode          : 4,
                        address         : 10,
                        source          : 9,
                        immediate       : 8;
#endif
};

union ins_formats {
                struct ins_format1 format1;
                struct ins_format2 format2;
                struct ins_format3 format3;
                uint8_t            bytes[4];
                uint32_t           integer;
};
struct instruction {
        union   ins_formats format;
        u_int   srcline;
        struct symbol *patch_label;
        TAILQ_ENTRY(instruction) links;
};

#define AIC_OP_OR       0x0
#define AIC_OP_AND      0x1
#define AIC_OP_XOR      0x2
#define AIC_OP_ADD      0x3
#define AIC_OP_ADC      0x4
#define AIC_OP_ROL      0x5
#define AIC_OP_BMOV     0x6

#define AIC_OP_JMP      0x8
#define AIC_OP_JC       0x9
#define AIC_OP_JNC      0xa
#define AIC_OP_CALL     0xb
#define AIC_OP_JNE      0xc
#define AIC_OP_JNZ      0xd
#define AIC_OP_JE       0xe
#define AIC_OP_JZ       0xf

/* Pseudo Ops */
#define AIC_OP_SHL      0x10
#define AIC_OP_SHR      0x20
#define AIC_OP_ROR      0x30