aboutsummaryrefslogtreecommitdiffstats
path: root/arch/m68k/math-emu/fp_movem.S
blob: 8354d39e6c47b31941326e049ea45f799e84ce38 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
/*
 * fp_movem.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"

| set flags for decode macros for fmovem
do_fmovem=1

	.globl	fp_fmovem_fp, fp_fmovem_cr

| %d1 contains the mask and count of the register list
| for other register usage see fp_decode.h

fp_fmovem_fp:
	printf	PDECODE,"fmovem.x "
	| get register list and count them
	btst	#11,%d2
	jne	1f
	bfextu	%d2{#24,#8},%d0		| static register list
	jra	2f
1:	bfextu	%d2{#25,#3},%d0		| dynamic register list
	jsr	fp_get_data_reg
2:	move.l	%d0,%d1
	swap	%d1
	jra	2f
1:	addq.w	#1,%d1			| count the # of registers in
2:	lsr.b	#1,%d0			| register list and keep it in %d1
	jcs	1b
	jne	2b
	printf	PDECODE,"#%08x",1,%d1
#ifdef FPU_EMU_DEBUG
	btst	#12,%d2
	jne	1f
	printf	PDECODE,"-"		| decremental move
	jra	2f
1:	printf	PDECODE,"+"		| incremental move
2:	btst	#13,%d2
	jeq	1f
	printf	PDECODE,"->"		| fpu -> cpu
	jra	2f
1:	printf	PDECODE,"<-"		| fpu <- cpu
2:
#endif

	| decode address mode
	fp_decode_addr_mode

	.long	fp_ill, fp_ill
	.long	fpr_indirect, fpr_postinc
	.long	fpr_predecr, fpr_disp16
	.long	fpr_extmode0, fpr_extmode1

	| addressing mode: address register indirect
fpr_indirect:
	fp_mode_addr_indirect
	jra	fpr_do_movem

	| addressing mode: address register indirect with postincrement
fpr_postinc:
	fp_mode_addr_indirect_postinc
	jra	fpr_do_movem

fpr_predecr:
	fp_mode_addr_indirect_predec
	jra	fpr_do_movem

	| addressing mode: address register/programm counter indirect
	|		   with 16bit displacement
fpr_disp16:
	fp_mode_addr_indirect_disp16
	jra	fpr_do_movem

fpr_extmode0:
	fp_mode_addr_indirect_extmode0
	jra	fpr_do_movem

fpr_extmode1:
	fp_decode_addr_reg
	jmp	([0f:w,%pc,%d0*4])

	.align	4
0:
	.long	fpr_absolute_short, fpr_absolute_long
	.long	fpr_disp16, fpr_extmode0
	.long	fp_ill, fp_ill
	.long	fp_ill, fp_ill

fpr_absolute_short:
	fp_mode_abs_short
	jra	fpr_do_movem

fpr_absolute_long:
	fp_mode_abs_long
|	jra	fpr_do_movem

fpr_do_movem:
	swap	%d1			| get fpu register list
	lea	(FPD_FPREG,FPDATA),%a1
	moveq	#12,%d0
	btst	#12,%d2
	jne	1f
	lea	(-12,%a1,%d0*8),%a1
	neg.l	%d0
1:	btst	#13,%d2
	jne	4f
	| move register from memory into fpu
	jra	3f
1:	printf	PMOVEM,"(%p>%p)",2,%a0,%a1
	getuser.l (%a0)+,%d2,fp_err_ua1,%a0
	lsr.l	#8,%d2
	lsr.l	#7,%d2
	lsr.w	#1,%d2
	move.l	%d2,(%a1)+
	getuser.l (%a0)+,%d2,fp_err_ua1,%a0
	move.l	%d2,(%a1)+
	getuser.l (%a0),%d2,fp_err_ua1,%a0
	move.l	%d2,(%a1)
	subq.l	#8,%a0
	subq.l	#8,%a1
	add.l	%d0,%a0
2:	add.l	%d0,%a1
3:	lsl.b	#1,%d1
	jcs	1b
	jne	2b
	jra	5f
	| move register from fpu into memory
1:	printf	PMOVEM,"(%p>%p)",2,%a1,%a0
	move.l	(%a1)+,%d2
	lsl.w	#1,%d2
	lsl.l	#7,%d2
	lsl.l	#8,%d2
	putuser.l %d2,(%a0)+,fp_err_ua1,%a0
	move.l	(%a1)+,%d2
	putuser.l %d2,(%a0)+,fp_err_ua1,%a0
	move.l	(%a1),%d2
	putuser.l %d2,(%a0),fp_err_ua1,%a0
	subq.l	#8,%a1
	subq.l	#8,%a0
	add.l	%d0,%a0
2:	add.l	%d0,%a1
4:	lsl.b	#1,%d1
	jcs	1b
	jne	2b
5:
	printf	PDECODE,"\n"
#if 0
	lea	(FPD_FPREG,FPDATA),%a0
	printf	PMOVEM,"fp:"
	printx	PMOVEM,%a0@(0)
	printx	PMOVEM,%a0@(12)
	printf	PMOVEM,"\n   "
	printx	PMOVEM,%a0@(24)
	printx	PMOVEM,%a0@(36)
	printf	PMOVEM,"\n   "
	printx	PMOVEM,%a0@(48)
	printx	PMOVEM,%a0@(60)
	printf	PMOVEM,"\n   "
	printx	PMOVEM,%a0@(72)
	printx	PMOVEM,%a0@(84)
	printf	PMOVEM,"\n"
#endif
	jra	fp_end

| set flags for decode macros for fmovem control register
do_fmovem=1
do_fmovem_cr=1

fp_fmovem_cr:
	printf	PDECODE,"fmovem.cr "
	| get register list and count them
	bfextu	%d2{#19,#3},%d0
	move.l	%d0,%d1
	swap	%d1
	jra	2f
1:	addq.w	#1,%d1
2:	lsr.l	#1,%d0
	jcs	1b
	jne	2b
	printf	PDECODE,"#%08x",1,%d1
#ifdef FPU_EMU_DEBUG
	btst	#13,%d2
	jeq	1f
	printf	PDECODE,"->"		| fpu -> cpu
	jra	2f
1:	printf	PDECODE,"<-"		| fpu <- cpu
2:
#endif

	| decode address mode
	fp_decode_addr_mode

	.long	fpc_data, fpc_addr
	.long	fpc_indirect, fpc_postinc
	.long	fpc_predecr, fpc_disp16
	.long	fpc_extmode0, fpc_extmode1

fpc_data:
	fp_mode_data_direct
	move.w	%d0,%d1
	bfffo	%d2{#19,#3},%d0
	sub.w	#19,%d0
	lea	(FPD_FPCR,FPDATA,%d0.w*4),%a1
	btst	#13,%d2
	jne	1f
	move.w	%d1,%d0
	jsr	fp_get_data_reg
	move.l	%d0,(%a1)
	jra	fpc_movem_fin
1:	move.l	(%a1),%d0
	jsr	fp_put_data_reg
	jra	fpc_movem_fin

fpc_addr:
	fp_decode_addr_reg
	printf	PDECODE,"a%d",1,%d0
	btst	#13,%d2
	jne	1f
	jsr	fp_get_addr_reg
	move.l	%a0,(FPD_FPIAR,FPDATA)
	jra	fpc_movem_fin
1:	move.l	(FPD_FPIAR,FPDATA),%a0
	jsr	fp_put_addr_reg
	jra	fpc_movem_fin

fpc_indirect:
	fp_mode_addr_indirect
	jra	fpc_do_movem

fpc_postinc:
	fp_mode_addr_indirect_postinc
	jra	fpc_do_movem

fpc_predecr:
	fp_mode_addr_indirect_predec
	jra	fpc_do_movem

fpc_disp16:
	fp_mode_addr_indirect_disp16
	jra	fpc_do_movem

fpc_extmode0:
	fp_mode_addr_indirect_extmode0
	jra	fpc_do_movem

fpc_extmode1:
	fp_decode_addr_reg
	jmp	([0f:w,%pc,%d0*4])

	.align	4
0:
	.long	fpc_absolute_short, fpc_absolute_long
	.long	fpc_disp16, fpc_extmode0
	.long	fpc_immediate, fp_ill
	.long	fp_ill, fp_ill

fpc_absolute_short:
	fp_mode_abs_short
	jra	fpc_do_movem

fpc_absolute_long:
	fp_mode_abs_long
	jra	fpc_do_movem

fpc_immediate:
	fp_get_pc %a0
	lea	(%a0,%d1.w*4),%a1
	fp_put_pc %a1
	printf	PDECODE,"#imm"
|	jra	fpc_do_movem
#if 0
	swap	%d1
	lsl.l	#5,%d1
	lea	(FPD_FPCR,FPDATA),%a0
	jra	3f
1:	move.l	%d0,(%a0)
2:	addq.l	#4,%a0
3:	lsl.b	#1,%d1
	jcs	1b
	jne	2b
	jra	fpc_movem_fin
#endif

fpc_do_movem:
	swap	%d1			| get fpu register list
	lsl.l	#5,%d1
	lea	(FPD_FPCR,FPDATA),%a1
1:	btst	#13,%d2
	jne	4f

	| move register from memory into fpu
	jra	3f
1:	printf	PMOVEM,"(%p>%p)",2,%a0,%a1
	getuser.l (%a0)+,%d0,fp_err_ua1,%a0
	move.l	%d0,(%a1)
2:	addq.l	#4,%a1
3:	lsl.b	#1,%d1
	jcs	1b
	jne	2b
	jra	fpc_movem_fin

	| move register from fpu into memory
1:	printf	PMOVEM,"(%p>%p)",2,%a1,%a0
	move.l	(%a1),%d0
	putuser.l %d0,(%a0)+,fp_err_ua1,%a0
2:	addq.l	#4,%a1
4:	lsl.b	#1,%d1
	jcs	1b
	jne	2b

fpc_movem_fin:
	and.l	#0x0000fff0,(FPD_FPCR,FPDATA)
	and.l	#0x0ffffff8,(FPD_FPSR,FPDATA)
	move.l	(FPD_FPCR,FPDATA),%d0
	lsr.l	#4,%d0
	moveq	#3,%d1
	and.l	%d0,%d1
	move.w	%d1,(FPD_RND,FPDATA)
	lsr.l	#2,%d0
	moveq	#3,%d1
	and.l	%d0,%d1
	move.w	%d1,(FPD_PREC,FPDATA)
	printf	PDECODE,"\n"
#if 0
	printf	PMOVEM,"fpcr : %08x\n",1,FPDATA@(FPD_FPCR)
	printf	PMOVEM,"fpsr : %08x\n",1,FPDATA@(FPD_FPSR)
	printf	PMOVEM,"fpiar: %08x\n",1,FPDATA@(FPD_FPIAR)
	clr.l	%d0
	move.w	(FPD_PREC,FPDATA),%d0
	printf	PMOVEM,"prec : %04x\n",1,%d0
	move.w	(FPD_RND,FPDATA),%d0
	printf	PMOVEM,"rnd  : %04x\n",1,%d0
#endif
	jra	fp_end