/*
* Instruction formats for the sequencer program downloaded to
* Aic7xxx SCSI host adapters
*
* Copyright (c) 1997, 1998 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, immediately at the beginning of the file.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* Where this Software is combined with software released under the terms of
* the GNU General Public License ("GPL") and the terms of the GPL would require the
* combined work to also be released under the terms of the GPL, the terms
* and conditions of this License will apply in addition to those of the
* GPL with the exception of any terms or conditions of this License that
* conflict with, or are expressly prohibited by, the GPL.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE.
*
* $Id: sequencer.h,v 1.3 1997/09/27 19:37:31 gibbs Exp $
*/
#ifdef __LITTLE_ENDIAN_BITFIELD
struct ins_format1 {
unsigned int
immediate : 8,
source : 9,
destination : 9,
ret : 1,
opcode : 4,
parity : 1;
};
struct ins_format2 {
unsigned int
shift_control : 8,
source : 9,
destination : 9,
ret : 1,
opcode : 4,
parity : 1;
};
struct ins_format3 {
unsigned int
immediate : 8,
source : 9,
address : 10,
opcode : 4,
parity : 1;
};
#elif defined(__BIG_ENDIAN_BITFIELD)
struct ins_format1 {
unsigned int
parity : 1,
opcode : 4,
ret : 1,
destination : 9,
source : 9,
immediate : 8;
};
struct ins_format2 {
unsigned int
parity : 1,
opcode : 4,
ret : 1,
destination : 9,
source : 9,
shift_control : 8;
};
struct ins_format3 {
unsigned int
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;
unsigned char bytes[4];
unsigned int integer;
};
struct instruction {
union ins_formats format;
unsigned int srcline;
struct symbol *patch_label;
struct {
struct instruction *stqe_next;
} 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
