drivers/scsi/aic7xxx/aicasm/aicasm_insformat.h

   1 /*
   2  * Instruction formats for the sequencer program downloaded to
   3  * Aic7xxx SCSI host adapters
   4  *
   5  * Copyright (c) 1997, 1998, 2000 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.
  14  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  15  *    substantially similar to the "NO WARRANTY" disclaimer below
  16  *    ("Disclaimer") and any redistribution must be conditioned upon
  17  *    including a substantially similar Disclaimer requirement for further
  18  *    binary redistribution.
  19  * 3. Neither the names of the above-listed copyright holders nor the names
  20  *    of any contributors may be used to endorse or promote products derived
  21  *    from this software without specific prior written permission.
  22  *
  23  * Alternatively, this software may be distributed under the terms of the
  24  * GNU General Public License ("GPL") version 2 as published by the Free
  25  * Software Foundation.
  26  *
  27  * NO WARRANTY
  28  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  29  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  30  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  31  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  32  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  36  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  37  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  38  * POSSIBILITY OF SUCH DAMAGES.
  39  *
  40  * $Id: //depot/aic7xxx/aic7xxx/aicasm/aicasm_insformat.h#11 $
  41  *
  42  * $FreeBSD$
  43  */
  44
  45 struct ins_format1 {
  46 #if BYTE_ORDER == LITTLE_ENDIAN
  47         uint32_t        immediate       : 8,
  48                         source          : 9,
  49                         destination     : 9,
  50                         ret             : 1,
  51                         opcode          : 4,
  52                         parity          : 1;
  53 #else
  54         uint32_t        parity          : 1,
  55                         opcode          : 4,
  56                         ret             : 1,
  57                         destination     : 9,
  58                         source          : 9,
  59                         immediate       : 8;
  60 #endif
  61 };
  62
  63 struct ins_format2 {
  64 #if BYTE_ORDER == LITTLE_ENDIAN
  65         uint32_t        shift_control   : 8,
  66                         source          : 9,
  67                         destination     : 9,
  68                         ret             : 1,
  69                         opcode          : 4,
  70                         parity          : 1;
  71 #else
  72         uint32_t        parity          : 1,
  73                         opcode          : 4,
  74                         ret             : 1,
  75                         destination     : 9,
  76                         source          : 9,
  77                         shift_control   : 8;
  78 #endif
  79 };
  80
  81 struct ins_format3 {
  82 #if BYTE_ORDER == LITTLE_ENDIAN
  83         uint32_t        immediate       : 8,
  84                         source          : 9,
  85                         address         : 10,
  86                         opcode          : 4,
  87                         parity          : 1;
  88 #else
  89         uint32_t        parity          : 1,
  90                         opcode          : 4,
  91                         address         : 10,
  92                         source          : 9,
  93                         immediate       : 8;
  94 #endif
  95 };
  96
  97 union ins_formats {
  98                 struct ins_format1 format1;
  99                 struct ins_format2 format2;
 100                 struct ins_format3 format3;
 101                 uint8_t            bytes[4];
 102                 uint32_t           integer;
 103 };
 104 struct instruction {
 105         union   ins_formats format;
 106         u_int   srcline;
 107         struct symbol *patch_label;
 108         STAILQ_ENTRY(instruction) links;
 109 };
 110
 111 #define AIC_OP_OR       0x0
 112 #define AIC_OP_AND      0x1
 113 #define AIC_OP_XOR      0x2
 114 #define AIC_OP_ADD      0x3
 115 #define AIC_OP_ADC      0x4
 116 #define AIC_OP_ROL      0x5
 117 #define AIC_OP_BMOV     0x6
 118
 119 #define AIC_OP_JMP      0x8
 120 #define AIC_OP_JC       0x9
 121 #define AIC_OP_JNC      0xa
 122 #define AIC_OP_CALL     0xb
 123 #define AIC_OP_JNE      0xc
 124 #define AIC_OP_JNZ      0xd
 125 #define AIC_OP_JE       0xe
 126 #define AIC_OP_JZ       0xf
 127
 128 /* Pseudo Ops */
 129 #define AIC_OP_SHL      0x10
 130 #define AIC_OP_SHR      0x20
 131 #define AIC_OP_ROR      0x30