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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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