1 /* 1 /*
2 * fp_move.S 2 * fp_move.S
3 * 3 *
4 * Copyright Roman Zippel, 1997. All rights r 4 * Copyright Roman Zippel, 1997. All rights reserved.
5 * 5 *
6 * Redistribution and use in source and binary 6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that t 7 * modification, are permitted provided that the following conditions
8 * are met: 8 * are met:
9 * 1. Redistributions of source code must reta 9 * 1. Redistributions of source code must retain the above copyright
10 * notice, and the entire permission notice 10 * notice, and the entire permission notice in its entirety,
11 * including the disclaimer of warranties. 11 * including the disclaimer of warranties.
12 * 2. Redistributions in binary form must repr 12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the 13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials pro 14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used t 15 * 3. The name of the author may not be used to endorse or promote
16 * products derived from this software with 16 * products derived from this software without specific prior
17 * written permission. 17 * written permission.
18 * 18 *
19 * ALTERNATIVELY, this product may be distribu 19 * ALTERNATIVELY, this product may be distributed under the terms of
20 * the GNU General Public License, in which ca 20 * the GNU General Public License, in which case the provisions of the GPL are
21 * required INSTEAD OF the above restrictions. 21 * required INSTEAD OF the above restrictions. (This clause is
22 * necessary due to a potential bad interactio 22 * necessary due to a potential bad interaction between the GPL and
23 * the restrictions contained in a BSD-style c 23 * the restrictions contained in a BSD-style copyright.)
24 * 24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY 25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
27 * OF MERCHANTABILITY AND FITNESS FOR A PARTIC 27 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR B 28 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
29 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, O 29 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
30 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 30 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
31 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 31 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILI 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
33 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIG 33 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS S 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
35 * OF THE POSSIBILITY OF SUCH DAMAGE. 35 * OF THE POSSIBILITY OF SUCH DAMAGE.
36 */ 36 */
37 37
38 #include "fp_emu.h" 38 #include "fp_emu.h"
39 #include "fp_decode.h" 39 #include "fp_decode.h"
40 40
41 do_no_pc_mode=1 41 do_no_pc_mode=1
42 42
43 .globl fp_fmove_fp2mem 43 .globl fp_fmove_fp2mem
44 44
45 fp_fmove_fp2mem: 45 fp_fmove_fp2mem:
46 clr.b (2+FPD_FPSR,FPDATA) 46 clr.b (2+FPD_FPSR,FPDATA)
47 fp_decode_dest_format 47 fp_decode_dest_format
48 move.w %d0,%d1 | stor 48 move.w %d0,%d1 | store data size twice in %d1
49 swap %d1 | one 49 swap %d1 | one can be trashed below
50 move.w %d0,%d1 50 move.w %d0,%d1
51 #ifdef FPU_EMU_DEBUG 51 #ifdef FPU_EMU_DEBUG
52 lea 0f,%a0 52 lea 0f,%a0
53 clr.l %d0 53 clr.l %d0
54 move.b (%a0,%d1.w),%d0 54 move.b (%a0,%d1.w),%d0
55 printf PDECODE,"fmove.%c ",1,%d0 55 printf PDECODE,"fmove.%c ",1,%d0
56 fp_decode_src_reg 56 fp_decode_src_reg
57 printf PDECODE,"fp%d,",1,%d0 57 printf PDECODE,"fp%d,",1,%d0
58 58
59 .data 59 .data
60 0: .byte 'l','s','x','p','w','d','b','p 60 0: .byte 'l','s','x','p','w','d','b','p'
61 .previous 61 .previous
62 #endif 62 #endif
63 63
64 | encode addressing mode for dest 64 | encode addressing mode for dest
65 fp_decode_addr_mode 65 fp_decode_addr_mode
66 66
67 .long fp_data, fp_ill 67 .long fp_data, fp_ill
68 .long fp_indirect, fp_postinc 68 .long fp_indirect, fp_postinc
69 .long fp_predecr, fp_disp16 69 .long fp_predecr, fp_disp16
70 .long fp_extmode0, fp_extmode1 70 .long fp_extmode0, fp_extmode1
71 71
72 | addressing mode: data register direc 72 | addressing mode: data register direct
73 fp_data: 73 fp_data:
74 fp_mode_data_direct 74 fp_mode_data_direct
75 move.w %d0,%d1 75 move.w %d0,%d1
76 fp_decode_src_reg 76 fp_decode_src_reg
77 fp_get_fp_reg 77 fp_get_fp_reg
78 lea (FPD_TEMPFP1,FPDATA),%a1 78 lea (FPD_TEMPFP1,FPDATA),%a1
79 move.l (%a0)+,(%a1)+ 79 move.l (%a0)+,(%a1)+
80 move.l (%a0)+,(%a1)+ 80 move.l (%a0)+,(%a1)+
81 move.l (%a0),(%a1) 81 move.l (%a0),(%a1)
82 lea (-8,%a1),%a0 82 lea (-8,%a1),%a0
83 swap %d1 83 swap %d1
84 move.l %d1,%d2 84 move.l %d1,%d2
85 printf PDECODE,"\n" 85 printf PDECODE,"\n"
86 jmp ([0f:w,%pc,%d1.w*4]) 86 jmp ([0f:w,%pc,%d1.w*4])
87 87
88 .align 4 88 .align 4
89 0: 89 0:
90 .long fp_data_long, fp_data_single 90 .long fp_data_long, fp_data_single
91 .long fp_ill, fp_ill 91 .long fp_ill, fp_ill
92 .long fp_data_word, fp_ill 92 .long fp_data_word, fp_ill
93 .long fp_data_byte, fp_ill 93 .long fp_data_byte, fp_ill
94 94
95 fp_data_byte: 95 fp_data_byte:
96 jsr fp_normalize_ext 96 jsr fp_normalize_ext
97 jsr fp_conv_ext2byte 97 jsr fp_conv_ext2byte
98 move.l %d0,%d1 98 move.l %d0,%d1
99 swap %d2 99 swap %d2
100 move.w %d2,%d0 100 move.w %d2,%d0
101 jsr fp_get_data_reg 101 jsr fp_get_data_reg
102 move.b %d1,%d0 102 move.b %d1,%d0
103 move.w %d2,%d1 103 move.w %d2,%d1
104 jsr fp_put_data_reg 104 jsr fp_put_data_reg
105 jra fp_final 105 jra fp_final
106 106
107 fp_data_word: 107 fp_data_word:
108 jsr fp_normalize_ext 108 jsr fp_normalize_ext
109 jsr fp_conv_ext2short 109 jsr fp_conv_ext2short
110 move.l %d0,%d1 110 move.l %d0,%d1
111 swap %d2 111 swap %d2
112 move.w %d2,%d0 112 move.w %d2,%d0
113 jsr fp_get_data_reg 113 jsr fp_get_data_reg
114 move.w %d1,%d0 114 move.w %d1,%d0
115 move.l %d2,%d1 115 move.l %d2,%d1
116 jsr fp_put_data_reg 116 jsr fp_put_data_reg
117 jra fp_final 117 jra fp_final
118 118
119 fp_data_long: 119 fp_data_long:
120 jsr fp_normalize_ext 120 jsr fp_normalize_ext
121 jsr fp_conv_ext2long 121 jsr fp_conv_ext2long
122 swap %d2 122 swap %d2
123 move.w %d2,%d1 123 move.w %d2,%d1
124 jsr fp_put_data_reg 124 jsr fp_put_data_reg
125 jra fp_final 125 jra fp_final
126 126
127 fp_data_single: 127 fp_data_single:
128 jsr fp_normalize_ext 128 jsr fp_normalize_ext
129 jsr fp_conv_ext2single 129 jsr fp_conv_ext2single
130 swap %d2 130 swap %d2
131 move.w %d2,%d1 131 move.w %d2,%d1
132 jsr fp_put_data_reg 132 jsr fp_put_data_reg
133 jra fp_final 133 jra fp_final
134 134
135 | addressing mode: address register in 135 | addressing mode: address register indirect
136 fp_indirect: 136 fp_indirect:
137 fp_mode_addr_indirect 137 fp_mode_addr_indirect
138 jra fp_putdest 138 jra fp_putdest
139 139
140 | addressing mode: address register in 140 | addressing mode: address register indirect with postincrement
141 fp_postinc: 141 fp_postinc:
142 fp_mode_addr_indirect_postinc 142 fp_mode_addr_indirect_postinc
143 jra fp_putdest 143 jra fp_putdest
144 144
145 | addressing mode: address register in 145 | addressing mode: address register indirect with predecrement
146 fp_predecr: 146 fp_predecr:
147 fp_mode_addr_indirect_predec 147 fp_mode_addr_indirect_predec
148 jra fp_putdest 148 jra fp_putdest
149 149
150 | addressing mode: address register in 150 | addressing mode: address register indirect with 16bit displacement
151 fp_disp16: 151 fp_disp16:
152 fp_mode_addr_indirect_disp16 152 fp_mode_addr_indirect_disp16
153 jra fp_putdest 153 jra fp_putdest
154 154
155 fp_extmode0: 155 fp_extmode0:
156 fp_mode_addr_indirect_extmode0 156 fp_mode_addr_indirect_extmode0
157 jra fp_putdest 157 jra fp_putdest
158 158
159 fp_extmode1: 159 fp_extmode1:
160 fp_decode_addr_reg 160 fp_decode_addr_reg
161 jmp ([0f:w,%pc,%d0*4]) 161 jmp ([0f:w,%pc,%d0*4])
162 162
163 .align 4 163 .align 4
164 0: 164 0:
165 .long fp_abs_short, fp_abs_long 165 .long fp_abs_short, fp_abs_long
166 .long fp_ill, fp_ill 166 .long fp_ill, fp_ill
167 .long fp_ill, fp_ill 167 .long fp_ill, fp_ill
168 .long fp_ill, fp_ill 168 .long fp_ill, fp_ill
169 169
170 fp_abs_short: 170 fp_abs_short:
171 fp_mode_abs_short 171 fp_mode_abs_short
172 jra fp_putdest 172 jra fp_putdest
173 173
174 fp_abs_long: 174 fp_abs_long:
175 fp_mode_abs_long 175 fp_mode_abs_long
176 jra fp_putdest 176 jra fp_putdest
177 177
178 fp_putdest: 178 fp_putdest:
179 move.l %a0,%a1 179 move.l %a0,%a1
180 fp_decode_src_reg 180 fp_decode_src_reg
181 move.l %d1,%d2 | save 181 move.l %d1,%d2 | save size
182 fp_get_fp_reg 182 fp_get_fp_reg
183 printf PDECODE,"\n" 183 printf PDECODE,"\n"
184 addq.l #8,%a0 184 addq.l #8,%a0
185 move.l (%a0),-(%sp) 185 move.l (%a0),-(%sp)
186 move.l -(%a0),-(%sp) 186 move.l -(%a0),-(%sp)
187 move.l -(%a0),-(%sp) 187 move.l -(%a0),-(%sp)
188 move.l %sp,%a0 188 move.l %sp,%a0
189 jsr fp_normalize_ext 189 jsr fp_normalize_ext
190 190
191 swap %d2 191 swap %d2
192 jmp ([0f:w,%pc,%d2.w*4]) 192 jmp ([0f:w,%pc,%d2.w*4])
193 193
194 .align 4 194 .align 4
195 0: 195 0:
196 .long fp_format_long, fp_format_sing 196 .long fp_format_long, fp_format_single
197 .long fp_format_extended, fp_format_ 197 .long fp_format_extended, fp_format_packed
198 .long fp_format_word, fp_format_doub 198 .long fp_format_word, fp_format_double
199 .long fp_format_byte, fp_format_pack 199 .long fp_format_byte, fp_format_packed
200 200
201 fp_format_long: 201 fp_format_long:
202 jsr fp_conv_ext2long 202 jsr fp_conv_ext2long
203 putuser.l %d0,(%a1),fp_err_ua1,%a1 203 putuser.l %d0,(%a1),fp_err_ua1,%a1
204 jra fp_finish_move 204 jra fp_finish_move
205 205
206 fp_format_single: 206 fp_format_single:
207 jsr fp_conv_ext2single 207 jsr fp_conv_ext2single
208 putuser.l %d0,(%a1),fp_err_ua1,%a1 208 putuser.l %d0,(%a1),fp_err_ua1,%a1
209 jra fp_finish_move 209 jra fp_finish_move
210 210
211 fp_format_extended: 211 fp_format_extended:
212 move.l (%a0)+,%d0 212 move.l (%a0)+,%d0
213 lsl.w #1,%d0 213 lsl.w #1,%d0
214 lsl.l #7,%d0 214 lsl.l #7,%d0
215 lsl.l #8,%d0 215 lsl.l #8,%d0
216 putuser.l %d0,(%a1)+,fp_err_ua1,%a1 216 putuser.l %d0,(%a1)+,fp_err_ua1,%a1
217 move.l (%a0)+,%d0 217 move.l (%a0)+,%d0
218 putuser.l %d0,(%a1)+,fp_err_ua1,%a1 218 putuser.l %d0,(%a1)+,fp_err_ua1,%a1
219 move.l (%a0),%d0 219 move.l (%a0),%d0
220 putuser.l %d0,(%a1),fp_err_ua1,%a1 220 putuser.l %d0,(%a1),fp_err_ua1,%a1
221 jra fp_finish_move 221 jra fp_finish_move
222 222
223 fp_format_packed: 223 fp_format_packed:
224 /* not supported yet */ 224 /* not supported yet */
225 lea (12,%sp),%sp 225 lea (12,%sp),%sp
226 jra fp_ill 226 jra fp_ill
227 227
228 fp_format_word: 228 fp_format_word:
229 jsr fp_conv_ext2short 229 jsr fp_conv_ext2short
230 putuser.w %d0,(%a1),fp_err_ua1,%a1 230 putuser.w %d0,(%a1),fp_err_ua1,%a1
231 jra fp_finish_move 231 jra fp_finish_move
232 232
233 fp_format_double: 233 fp_format_double:
234 jsr fp_conv_ext2double 234 jsr fp_conv_ext2double
235 jra fp_finish_move 235 jra fp_finish_move
236 236
237 fp_format_byte: 237 fp_format_byte:
238 jsr fp_conv_ext2byte 238 jsr fp_conv_ext2byte
239 putuser.b %d0,(%a1),fp_err_ua1,%a1 239 putuser.b %d0,(%a1),fp_err_ua1,%a1
240 | jra fp_finish_move 240 | jra fp_finish_move
241 241
242 fp_finish_move: 242 fp_finish_move:
243 lea (12,%sp),%sp 243 lea (12,%sp),%sp
244 jra fp_final 244 jra fp_final
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