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Annotation of Gnu-Mach/linux/src/drivers/scsi/aic7xxx/sequencer.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Instruction formats for the sequencer program downloaded to
        !             3:  * Aic7xxx SCSI host adapters
        !             4:  *
        !             5:  * Copyright (c) 1997, 1998 Justin T. Gibbs.
        !             6:  * All rights reserved.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms, with or without
        !             9:  * modification, are permitted provided that the following conditions
        !            10:  * are met:
        !            11:  * 1. Redistributions of source code must retain the above copyright
        !            12:  *    notice, this list of conditions, and the following disclaimer,
        !            13:  *    without modification, immediately at the beginning of the file.
        !            14:  * 2. The name of the author may not be used to endorse or promote products
        !            15:  *    derived from this software without specific prior written permission.
        !            16:  *
        !            17:  * Where this Software is combined with software released under the terms of 
        !            18:  * the GNU Public License ("GPL") and the terms of the GPL would require the 
        !            19:  * combined work to also be released under the terms of the GPL, the terms
        !            20:  * and conditions of this License will apply in addition to those of the
        !            21:  * GPL with the exception of any terms or conditions of this License that
        !            22:  * conflict with, or are expressly prohibited by, the GPL.
        !            23:  *
        !            24:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
        !            25:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            26:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            27:  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
        !            28:  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            29:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            30:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            31:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            32:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            33:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            34:  * SUCH DAMAGE.
        !            35:  *
        !            36:  *      $Id: sequencer.h,v 1.1 1999/04/26 05:55:33 tb Exp $
        !            37:  */
        !            38: 
        !            39: #ifdef __LITTLE_ENDIAN_BITFIELD
        !            40: struct ins_format1 {
        !            41:        unsigned int
        !            42:                        immediate       : 8,
        !            43:                        source          : 9,
        !            44:                        destination     : 9,
        !            45:                        ret             : 1,
        !            46:                        opcode          : 4,
        !            47:                        parity          : 1;
        !            48: };
        !            49: 
        !            50: struct ins_format2 {
        !            51:        unsigned int
        !            52:                        shift_control   : 8,
        !            53:                        source          : 9,
        !            54:                        destination     : 9,
        !            55:                        ret             : 1,
        !            56:                        opcode          : 4,
        !            57:                        parity          : 1;
        !            58: };
        !            59: 
        !            60: struct ins_format3 {
        !            61:        unsigned int
        !            62:                        immediate       : 8,
        !            63:                        source          : 9,
        !            64:                        address         : 10,
        !            65:                        opcode          : 4,
        !            66:                        parity          : 1;
        !            67: };
        !            68: #elif defined(__BIG_ENDIAN_BITFIELD)
        !            69: struct ins_format1 {
        !            70:        unsigned int
        !            71:                        parity          : 1,
        !            72:                        opcode          : 4,
        !            73:                        ret             : 1,
        !            74:                        destination     : 9,
        !            75:                        source          : 9,
        !            76:                        immediate       : 8;
        !            77: };
        !            78: 
        !            79: struct ins_format2 {
        !            80:        unsigned int
        !            81:                        parity          : 1,
        !            82:                        opcode          : 4,
        !            83:                        ret             : 1,
        !            84:                        destination     : 9,
        !            85:                        source          : 9,
        !            86:                        shift_control   : 8;
        !            87: };
        !            88: 
        !            89: struct ins_format3 {
        !            90:        unsigned int
        !            91:                        parity          : 1,
        !            92:                        opcode          : 4,
        !            93:                        address         : 10,
        !            94:                        source          : 9,
        !            95:                        immediate       : 8;
        !            96: };
        !            97: #endif
        !            98: 
        !            99: union ins_formats {
        !           100:                struct ins_format1 format1;
        !           101:                struct ins_format2 format2;
        !           102:                struct ins_format3 format3;
        !           103:                unsigned char      bytes[4];
        !           104:                unsigned int       integer;
        !           105: };
        !           106: struct instruction {
        !           107:        union   ins_formats format;
        !           108:        unsigned int    srcline;
        !           109:        struct symbol *patch_label;
        !           110:   struct {
        !           111:     struct instruction *stqe_next;
        !           112:   } links;
        !           113: };
        !           114: 
        !           115: #define        AIC_OP_OR       0x0
        !           116: #define        AIC_OP_AND      0x1
        !           117: #define AIC_OP_XOR     0x2
        !           118: #define        AIC_OP_ADD      0x3
        !           119: #define        AIC_OP_ADC      0x4
        !           120: #define        AIC_OP_ROL      0x5
        !           121: #define        AIC_OP_BMOV     0x6
        !           122: 
        !           123: #define        AIC_OP_JMP      0x8
        !           124: #define AIC_OP_JC      0x9
        !           125: #define AIC_OP_JNC     0xa
        !           126: #define AIC_OP_CALL    0xb
        !           127: #define        AIC_OP_JNE      0xc
        !           128: #define        AIC_OP_JNZ      0xd
        !           129: #define        AIC_OP_JE       0xe
        !           130: #define        AIC_OP_JZ       0xf
        !           131: 
        !           132: /* Pseudo Ops */
        !           133: #define        AIC_OP_SHL      0x10
        !           134: #define        AIC_OP_SHR      0x20
        !           135: #define        AIC_OP_ROR      0x30

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