aboutsummaryrefslogtreecommitdiffstats
path: root/arch/m68k/math-emu/fp_move.S
diff options
context:
space:
mode:
Diffstat (limited to 'arch/m68k/math-emu/fp_move.S')
-rw-r--r--arch/m68k/math-emu/fp_move.S244
1 files changed, 244 insertions, 0 deletions
diff --git a/arch/m68k/math-emu/fp_move.S b/arch/m68k/math-emu/fp_move.S
new file mode 100644
index 000000000000..71bdf83ba61a
--- /dev/null
+++ b/arch/m68k/math-emu/fp_move.S
@@ -0,0 +1,244 @@
1/*
2 * fp_move.S
3 *
4 * Copyright Roman Zippel, 1997. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, and the entire permission notice in its entirety,
11 * including the disclaimer of warranties.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote
16 * products derived from this software without specific prior
17 * written permission.
18 *
19 * ALTERNATIVELY, this product may be distributed under the terms of
20 * the GNU General Public License, in which case the provisions of the GPL are
21 * required INSTEAD OF the above restrictions. (This clause is
22 * necessary due to a potential bad interaction between the GPL and
23 * the restrictions contained in a BSD-style copyright.)
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
27 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
29 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
30 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
31 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
33 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
35 * OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38#include "fp_emu.h"
39#include "fp_decode.h"
40
41do_no_pc_mode=1
42
43 .globl fp_fmove_fp2mem
44
45fp_fmove_fp2mem:
46 clr.b (2+FPD_FPSR,FPDATA)
47 fp_decode_dest_format
48 move.w %d0,%d1 | store data size twice in %d1
49 swap %d1 | one can be trashed below
50 move.w %d0,%d1
51#ifdef FPU_EMU_DEBUG
52 lea 0f,%a0
53 clr.l %d0
54 move.b (%a0,%d1.w),%d0
55 printf PDECODE,"fmove.%c ",1,%d0
56 fp_decode_src_reg
57 printf PDECODE,"fp%d,",1,%d0
58
59 .data
600: .byte 'l','s','x','p','w','d','b','p'
61 .previous
62#endif
63
64 | encode addressing mode for dest
65 fp_decode_addr_mode
66
67 .long fp_data, fp_ill
68 .long fp_indirect, fp_postinc
69 .long fp_predecr, fp_disp16
70 .long fp_extmode0, fp_extmode1
71
72 | addressing mode: data register direct
73fp_data:
74 fp_mode_data_direct
75 move.w %d0,%d1
76 fp_decode_src_reg
77 fp_get_fp_reg
78 lea (FPD_TEMPFP1,FPDATA),%a1
79 move.l (%a0)+,(%a1)+
80 move.l (%a0)+,(%a1)+
81 move.l (%a0),(%a1)
82 lea (-8,%a1),%a0
83 swap %d1
84 move.l %d1,%d2
85 printf PDECODE,"\n"
86 jmp ([0f:w,%pc,%d1.w*4])
87
88 .align 4
890:
90 .long fp_data_long, fp_data_single
91 .long fp_ill, fp_ill
92 .long fp_data_word, fp_ill
93 .long fp_data_byte, fp_ill
94
95fp_data_byte:
96 jsr fp_normalize_ext
97 jsr fp_conv_ext2byte
98 move.l %d0,%d1
99 swap %d2
100 move.w %d2,%d0
101 jsr fp_get_data_reg
102 move.b %d1,%d0
103 move.w %d2,%d1
104 jsr fp_put_data_reg
105 jra fp_final
106
107fp_data_word:
108 jsr fp_normalize_ext
109 jsr fp_conv_ext2short
110 move.l %d0,%d1
111 swap %d2
112 move.w %d2,%d0
113 jsr fp_get_data_reg
114 move.w %d1,%d0
115 move.l %d2,%d1
116 jsr fp_put_data_reg
117 jra fp_final
118
119fp_data_long:
120 jsr fp_normalize_ext
121 jsr fp_conv_ext2long
122 swap %d2
123 move.w %d2,%d1
124 jsr fp_put_data_reg
125 jra fp_final
126
127fp_data_single:
128 jsr fp_normalize_ext
129 jsr fp_conv_ext2single
130 swap %d2
131 move.w %d2,%d1
132 jsr fp_put_data_reg
133 jra fp_final
134
135 | addressing mode: address register indirect
136fp_indirect:
137 fp_mode_addr_indirect
138 jra fp_putdest
139
140 | addressing mode: address register indirect with postincrement
141fp_postinc:
142 fp_mode_addr_indirect_postinc
143 jra fp_putdest
144
145 | addressing mode: address register indirect with predecrement
146fp_predecr:
147 fp_mode_addr_indirect_predec
148 jra fp_putdest
149
150 | addressing mode: address register indirect with 16bit displacement
151fp_disp16:
152 fp_mode_addr_indirect_disp16
153 jra fp_putdest
154
155fp_extmode0:
156 fp_mode_addr_indirect_extmode0
157 jra fp_putdest
158
159fp_extmode1:
160 fp_decode_addr_reg
161 jmp ([0f:w,%pc,%d0*4])
162
163 .align 4
1640:
165 .long fp_abs_short, fp_abs_long
166 .long fp_ill, fp_ill
167 .long fp_ill, fp_ill
168 .long fp_ill, fp_ill
169
170fp_abs_short:
171 fp_mode_abs_short
172 jra fp_putdest
173
174fp_abs_long:
175 fp_mode_abs_long
176 jra fp_putdest
177
178fp_putdest:
179 move.l %a0,%a1
180 fp_decode_src_reg
181 move.l %d1,%d2 | save size
182 fp_get_fp_reg
183 printf PDECODE,"\n"
184 addq.l #8,%a0
185 move.l (%a0),-(%sp)
186 move.l -(%a0),-(%sp)
187 move.l -(%a0),-(%sp)
188 move.l %sp,%a0
189 jsr fp_normalize_ext
190
191 swap %d2
192 jmp ([0f:w,%pc,%d2.w*4])
193
194 .align 4
1950:
196 .long fp_format_long, fp_format_single
197 .long fp_format_extended, fp_format_packed
198 .long fp_format_word, fp_format_double
199 .long fp_format_byte, fp_format_packed
200
201fp_format_long:
202 jsr fp_conv_ext2long
203 putuser.l %d0,(%a1),fp_err_ua1,%a1
204 jra fp_finish_move
205
206fp_format_single:
207 jsr fp_conv_ext2single
208 putuser.l %d0,(%a1),fp_err_ua1,%a1
209 jra fp_finish_move
210
211fp_format_extended:
212 move.l (%a0)+,%d0
213 lsl.w #1,%d0
214 lsl.l #7,%d0
215 lsl.l #8,%d0
216 putuser.l %d0,(%a1)+,fp_err_ua1,%a1
217 move.l (%a0)+,%d0
218 putuser.l %d0,(%a1)+,fp_err_ua1,%a1
219 move.l (%a0),%d0
220 putuser.l %d0,(%a1),fp_err_ua1,%a1
221 jra fp_finish_move
222
223fp_format_packed:
224 /* not supported yet */
225 lea (12,%sp),%sp
226 jra fp_ill
227
228fp_format_word:
229 jsr fp_conv_ext2short
230 putuser.w %d0,(%a1),fp_err_ua1,%a1
231 jra fp_finish_move
232
233fp_format_double:
234 jsr fp_conv_ext2double
235 jra fp_finish_move
236
237fp_format_byte:
238 jsr fp_conv_ext2byte
239 putuser.b %d0,(%a1),fp_err_ua1,%a1
240| jra fp_finish_move
241
242fp_finish_move:
243 lea (12,%sp),%sp
244 jra fp_final
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-16 03:13:53 -0500