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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
|
|
