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|
/*
* fp_move.S
*
* Copyright Roman Zippel, 1997. 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, and the entire permission notice in its entirety,
* including the disclaimer of warranties.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* ALTERNATIVELY, this product may be distributed under the terms of
* the GNU General Public License, in which case the provisions of the GPL are
* required INSTEAD OF the above restrictions. (This clause is
* necessary due to a potential bad interaction between the GPL and
* the restrictions contained in a BSD-style copyright.)
*
* THIS SOFTWARE IS PROVIDED ``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 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.
*/
#include "fp_emu.h"
#include "fp_decode.h"
do_no_pc_mode=1
.globl fp_fmove_fp2mem
fp_fmove_fp2mem:
clr.b (2+FPD_FPSR,FPDATA)
fp_decode_dest_format
move.w %d0,%d1 | store data size twice in %d1
swap %d1 | one can be trashed below
move.w %d0,%d1
#ifdef FPU_EMU_DEBUG
lea 0f,%a0
clr.l %d0
move.b (%a0,%d1.w),%d0
printf PDECODE,"fmove.%c ",1,%d0
fp_decode_src_reg
printf PDECODE,"fp%d,",1,%d0
.data
0: .byte 'l','s','x','p','w','d','b','p'
.previous
#endif
| encode addressing mode for dest
fp_decode_addr_mode
.long fp_data, fp_ill
.long fp_indirect, fp_postinc
.long fp_predecr, fp_disp16
.long fp_extmode0, fp_extmode1
| addressing mode: data register direct
fp_data:
fp_mode_data_direct
move.w %d0,%d1
fp_decode_src_reg
fp_get_fp_reg
lea (FPD_TEMPFP1,FPDATA),%a1
move.l (%a0)+,(%a1)+
move.l (%a0)+,(%a1)+
move.l (%a0),(%a1)
lea (-8,%a1),%a0
swap %d1
move.l %d1,%d2
printf PDECODE,"\n"
jmp ([0f:w,%pc,%d1.w*4])
.align 4
0:
.long fp_data_long, fp_data_single
.long fp_ill, fp_ill
.long fp_data_word, fp_ill
.long fp_data_byte, fp_ill
fp_data_byte:
jsr fp_normalize_ext
jsr fp_conv_ext2byte
move.l %d0,%d1
swap %d2
move.w %d2,%d0
jsr fp_get_data_reg
move.b %d1,%d0
move.w %d2,%d1
jsr fp_put_data_reg
jra fp_final
fp_data_word:
jsr fp_normalize_ext
jsr fp_conv_ext2short
move.l %d0,%d1
swap %d2
move.w %d2,%d0
jsr fp_get_data_reg
move.w %d1,%d0
move.l %d2,%d1
jsr fp_put_data_reg
jra fp_final
fp_data_long:
jsr fp_normalize_ext
jsr fp_conv_ext2long
swap %d2
move.w %d2,%d1
jsr fp_put_data_reg
jra fp_final
fp_data_single:
jsr fp_normalize_ext
jsr fp_conv_ext2single
swap %d2
move.w %d2,%d1
jsr fp_put_data_reg
jra fp_final
| addressing mode: address register indirect
fp_indirect:
fp_mode_addr_indirect
jra fp_putdest
| addressing mode: address register indirect with postincrement
fp_postinc:
fp_mode_addr_indirect_postinc
jra fp_putdest
| addressing mode: address register indirect with predecrement
fp_predecr:
fp_mode_addr_indirect_predec
jra fp_putdest
| addressing mode: address register indirect with 16bit displacement
fp_disp16:
fp_mode_addr_indirect_disp16
jra fp_putdest
fp_extmode0:
fp_mode_addr_indirect_extmode0
jra fp_putdest
fp_extmode1:
fp_decode_addr_reg
jmp ([0f:w,%pc,%d0*4])
.align 4
0:
.long fp_abs_short, fp_abs_long
.long fp_ill, fp_ill
.long fp_ill, fp_ill
.long fp_ill, fp_ill
fp_abs_short:
fp_mode_abs_short
jra fp_putdest
fp_abs_long:
fp_mode_abs_long
jra fp_putdest
fp_putdest:
move.l %a0,%a1
fp_decode_src_reg
move.l %d1,%d2 | save size
fp_get_fp_reg
printf PDECODE,"\n"
addq.l #8,%a0
move.l (%a0),-(%sp)
move.l -(%a0),-(%sp)
move.l -(%a0),-(%sp)
move.l %sp,%a0
jsr fp_normalize_ext
swap %d2
jmp ([0f:w,%pc,%d2.w*4])
.align 4
0:
.long fp_format_long, fp_format_single
.long fp_format_extended, fp_format_packed
.long fp_format_word, fp_format_double
.long fp_format_byte, fp_format_packed
fp_format_long:
jsr fp_conv_ext2long
putuser.l %d0,(%a1),fp_err_ua1,%a1
jra fp_finish_move
fp_format_single:
jsr fp_conv_ext2single
putuser.l %d0,(%a1),fp_err_ua1,%a1
jra fp_finish_move
fp_format_extended:
move.l (%a0)+,%d0
lsl.w #1,%d0
lsl.l #7,%d0
lsl.l #8,%d0
putuser.l %d0,(%a1)+,fp_err_ua1,%a1
move.l (%a0)+,%d0
putuser.l %d0,(%a1)+,fp_err_ua1,%a1
move.l (%a0),%d0
putuser.l %d0,(%a1),fp_err_ua1,%a1
jra fp_finish_move
fp_format_packed:
/* not supported yet */
lea (12,%sp),%sp
jra fp_ill
fp_format_word:
jsr fp_conv_ext2short
putuser.w %d0,(%a1),fp_err_ua1,%a1
jra fp_finish_move
fp_format_double:
jsr fp_conv_ext2double
jra fp_finish_move
fp_format_byte:
jsr fp_conv_ext2byte
putuser.b %d0,(%a1),fp_err_ua1,%a1
| jra fp_finish_move
fp_finish_move:
lea (12,%sp),%sp
jra fp_final
|
