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#12 $ 41 * 42 * $FreeBSD$ 43 */ 44 45 #include <asm/byteorder.h> 46 47 /* 8bit ALU logic operations */ 48 struct ins_format1 { 49 #ifdef __LITTLE_ENDIAN 50 uint32_t immediate : 8, 51 source : 9, 52 destination : 9, 53 ret : 1, 54 opcode : 4, 55 parity : 1; 56 #else 57 uint32_t parity : 1, 58 opcode : 4, 59 ret : 1, 60 destination : 9, 61 source : 9, 62 immediate : 8; 63 #endif 64 }; 65 66 /* 8bit ALU shift/rotate operations */ 67 struct ins_format2 { 68 #ifdef __LITTLE_ENDIAN 69 uint32_t shift_control : 8, 70 source : 9, 71 destination : 9, 72 ret : 1, 73 opcode : 4, 74 parity : 1; 75 #else 76 uint32_t parity : 1, 77 opcode : 4, 78 ret : 1, 79 destination : 9, 80 source : 9, 81 shift_control : 8; 82 #endif 83 }; 84 85 /* 8bit branch control operations */ 86 struct ins_format3 { 87 #ifdef __LITTLE_ENDIAN 88 uint32_t immediate : 8, 89 source : 9, 90 address : 10, 91 opcode : 4, 92 parity : 1; 93 #else 94 uint32_t parity : 1, 95 opcode : 4, 96 address : 10, 97 source : 9, 98 immediate : 8; 99 #endif 100 }; 101 102 /* 16bit ALU logic operations */ 103 struct ins_format4 { 104 #ifdef __LITTLE_ENDIAN 105 uint32_t opcode_ext : 8, 106 source : 9, 107 destination : 9, 108 ret : 1, 109 opcode : 4, 110 parity : 1; 111 #else 112 uint32_t parity : 1, 113 opcode : 4, 114 ret : 1, 115 destination : 9, 116 source : 9, 117 opcode_ext : 8; 118 #endif 119 }; 120 121 /* 16bit branch control operations */ 122 struct ins_format5 { 123 #ifdef __LITTLE_ENDIAN 124 uint32_t opcode_ext : 8, 125 source : 9, 126 address : 10, 127 opcode : 4, 128 parity : 1; 129 #else 130 uint32_t parity : 1, 131 opcode : 4, 132 address : 10, 133 source : 9, 134 opcode_ext : 8; 135 #endif 136 }; 137 138 /* Far branch operations */ 139 struct ins_format6 { 140 #ifdef __LITTLE_ENDIAN 141 uint32_t page : 3, 142 opcode_ext : 5, 143 source : 9, 144 address : 10, 145 opcode : 4, 146 parity : 1; 147 #else 148 uint32_t parity : 1, 149 opcode : 4, 150 address : 10, 151 source : 9, 152 opcode_ext : 5, 153 page : 3; 154 #endif 155 }; 156 157 union ins_formats { 158 struct ins_format1 format1; 159 struct ins_format2 format2; 160 struct ins_format3 format3; 161 struct ins_format4 format4; 162 struct ins_format5 format5; 163 struct ins_format6 format6; 164 uint8_t bytes[4]; 165 uint32_t integer; 166 }; 167 struct instruction { 168 union ins_formats format; 169 u_int srcline; 170 struct symbol *patch_label; 171 STAILQ_ENTRY(instruction) links; 172 }; 173 174 #define AIC_OP_OR 0x0 175 #define AIC_OP_AND 0x1 176 #define AIC_OP_XOR 0x2 177 #define AIC_OP_ADD 0x3 178 #define AIC_OP_ADC 0x4 179 #define AIC_OP_ROL 0x5 180 #define AIC_OP_BMOV 0x6 181 182 #define AIC_OP_MVI16 0x7 183 184 #define AIC_OP_JMP 0x8 185 #define AIC_OP_JC 0x9 186 #define AIC_OP_JNC 0xa 187 #define AIC_OP_CALL 0xb 188 #define AIC_OP_JNE 0xc 189 #define AIC_OP_JNZ 0xd 190 #define AIC_OP_JE 0xe 191 #define AIC_OP_JZ 0xf 192 193 /* Pseudo Ops */ 194 #define AIC_OP_SHL 0x10 195 #define AIC_OP_SHR 0x20 196 #define AIC_OP_ROR 0x30 197 198 /* 16bit Ops. Low byte main opcode. High byte extended opcode. */ 199 #define AIC_OP_OR16 0x8005 200 #define AIC_OP_AND16 0x8105 201 #define AIC_OP_XOR16 0x8205 202 #define AIC_OP_ADD16 0x8305 203 #define AIC_OP_ADC16 0x8405 204 #define AIC_OP_JNE16 0x8805 205 #define AIC_OP_JNZ16 0x8905 206 #define AIC_OP_JE16 0x8C05 207 #define AIC_OP_JZ16 0x8B05 208 #define AIC_OP_JMP16 0x9005 209 #define AIC_OP_JC16 0x9105 210 #define AIC_OP_JNC16 0x9205 211 #define AIC_OP_CALL16 0x9305 212 213 /* Page extension is low three bits of second opcode byte. */ 214 #define AIC_OP_JMPF 0xA005 215 #define AIC_OP_CALLF 0xB005 216 #define AIC_OP_JCF 0xC005 217 #define AIC_OP_JNCF 0xD005 218 #define AIC_OP_CMPXCHG 0xE005 219