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
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
|
/* -----------------------------------------------------------------------
sysv.S - Copyright (c) 2002 Kaz Kojima
SuperH Foreign Function Interface
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
``Software''), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
----------------------------------------------------------------------- */
#define LIBFFI_ASM
#include <ffi.h>
#ifdef HAVE_MACHINE_ASM_H
#include <machine/asm.h>
#else
/* XXX these lose for some platforms, I'm sure. */
#define CNAME(x) x
#define ENTRY(x) .globl CNAME(x); .type CNAME(x),%function; CNAME(x):
#endif
#if defined(__HITACHI__)
#define STRUCT_VALUE_ADDRESS_WITH_ARG 1
#else
#define STRUCT_VALUE_ADDRESS_WITH_ARG 0
#endif
.text
# r4: ffi_prep_args
# r5: &ecif
# r6: bytes
# r7: flags
# sp+0: rvalue
# sp+4: fn
# This assumes we are using gas.
ENTRY(ffi_call_SYSV)
#if defined(__SH4__)
# Save registers
mov.l r8,@-r15
mov.l r9,@-r15
mov.l r10,@-r15
mov.l r12,@-r15
mov.l r14,@-r15
sts.l pr,@-r15
mov r15,r14
mov r6,r8
mov r7,r9
sub r6,r15
add #-16,r15
mov #~7,r0
and r0,r15
mov r4,r0
jsr @r0
mov r15,r4
mov r9,r1
shlr8 r9
shlr8 r9
shlr8 r9
mov #FFI_TYPE_STRUCT,r2
cmp/eq r2,r9
bf 1f
#if STRUCT_VALUE_ADDRESS_WITH_ARG
mov.l @r15+,r4
bra 2f
mov #5,r2
#else
mov.l @r15+,r10
#endif
1:
mov #4,r2
2:
mov #4,r3
L_pass:
cmp/pl r8
bf L_call_it
mov r1,r0
and #3,r0
L_pass_d:
cmp/eq #FFI_TYPE_DOUBLE,r0
bf L_pass_f
mov r3,r0
and #1,r0
tst r0,r0
bt 1f
add #1,r3
1:
mov r15,r0
and #7,r0
tst r0,r0
bt 2f
add #4,r15
2:
mov #12,r0
cmp/hs r0,r3
bt/s 3f
shlr2 r1
bsr L_pop_d
nop
3:
add #2,r3
bra L_pass
add #-8,r8
L_pop_d:
mov r3,r0
add r0,r0
add r3,r0
add #-12,r0
braf r0
nop
#ifdef __LITTLE_ENDIAN__
fmov.s @r15+,fr5
rts
fmov.s @r15+,fr4
fmov.s @r15+,fr7
rts
fmov.s @r15+,fr6
fmov.s @r15+,fr9
rts
fmov.s @r15+,fr8
fmov.s @r15+,fr11
rts
fmov.s @r15+,fr10
#else
fmov.s @r15+,fr4
rts
fmov.s @r15+,fr5
fmov.s @r15+,fr6
rts
fmov.s @r15+,fr7
fmov.s @r15+,fr8
rts
fmov.s @r15+,fr9
fmov.s @r15+,fr10
rts
fmov.s @r15+,fr11
#endif
L_pass_f:
cmp/eq #FFI_TYPE_FLOAT,r0
bf L_pass_i
mov #12,r0
cmp/hs r0,r3
bt/s 2f
shlr2 r1
bsr L_pop_f
nop
2:
add #1,r3
bra L_pass
add #-4,r8
L_pop_f:
mov r3,r0
shll2 r0
add #-16,r0
braf r0
nop
#ifdef __LITTLE_ENDIAN__
rts
fmov.s @r15+,fr5
rts
fmov.s @r15+,fr4
rts
fmov.s @r15+,fr7
rts
fmov.s @r15+,fr6
rts
fmov.s @r15+,fr9
rts
fmov.s @r15+,fr8
rts
fmov.s @r15+,fr11
rts
fmov.s @r15+,fr10
#else
rts
fmov.s @r15+,fr4
rts
fmov.s @r15+,fr5
rts
fmov.s @r15+,fr6
rts
fmov.s @r15+,fr7
rts
fmov.s @r15+,fr8
rts
fmov.s @r15+,fr9
rts
fmov.s @r15+,fr10
rts
fmov.s @r15+,fr11
#endif
L_pass_i:
cmp/eq #FFI_TYPE_INT,r0
bf L_call_it
mov #8,r0
cmp/hs r0,r2
bt/s 2f
shlr2 r1
bsr L_pop_i
nop
2:
add #1,r2
bra L_pass
add #-4,r8
L_pop_i:
mov r2,r0
shll2 r0
add #-16,r0
braf r0
nop
rts
mov.l @r15+,r4
rts
mov.l @r15+,r5
rts
mov.l @r15+,r6
rts
mov.l @r15+,r7
L_call_it:
# call function
#if (! STRUCT_VALUE_ADDRESS_WITH_ARG)
mov r10, r2
#endif
mov.l @(28,r14),r1
jsr @r1
nop
L_ret_d:
mov #FFI_TYPE_DOUBLE,r2
cmp/eq r2,r9
bf L_ret_ll
mov.l @(24,r14),r1
#ifdef __LITTLE_ENDIAN__
fmov.s fr1,@r1
add #4,r1
bra L_epilogue
fmov.s fr0,@r1
#else
fmov.s fr0,@r1
add #4,r1
bra L_epilogue
fmov.s fr1,@r1
#endif
L_ret_ll:
mov #FFI_TYPE_SINT64,r2
cmp/eq r2,r9
bt/s 1f
mov #FFI_TYPE_UINT64,r2
cmp/eq r2,r9
bf L_ret_f
1:
mov.l @(24,r14),r2
mov.l r0,@r2
bra L_epilogue
mov.l r1,@(4,r2)
L_ret_f:
mov #FFI_TYPE_FLOAT,r2
cmp/eq r2,r9
bf L_ret_i
mov.l @(24,r14),r1
bra L_epilogue
fmov.s fr0,@r1
L_ret_i:
mov #FFI_TYPE_INT,r2
cmp/eq r2,r9
bf L_epilogue
mov.l @(24,r14),r1
bra L_epilogue
mov.l r0,@r1
L_epilogue:
# Remove the space we pushed for the args
mov r14,r15
lds.l @r15+,pr
mov.l @r15+,r14
mov.l @r15+,r12
mov.l @r15+,r10
mov.l @r15+,r9
rts
mov.l @r15+,r8
#else
# Save registers
mov.l r8,@-r15
mov.l r9,@-r15
mov.l r10,@-r15
mov.l r12,@-r15
mov.l r14,@-r15
sts.l pr,@-r15
mov r15,r14
mov r6,r8
mov r7,r9
sub r6,r15
add #-16,r15
mov #~7,r0
and r0,r15
mov r4,r0
jsr @r0
mov r15,r4
mov r9,r3
shlr8 r9
shlr8 r9
shlr8 r9
mov #FFI_TYPE_STRUCT,r2
cmp/eq r2,r9
bf 1f
#if STRUCT_VALUE_ADDRESS_WITH_ARG
mov.l @r15+,r4
bra 2f
mov #5,r2
#else
mov.l @r15+,r10
#endif
1:
mov #4,r2
2:
L_pass:
cmp/pl r8
bf L_call_it
mov r3,r0
and #3,r0
L_pass_d:
cmp/eq #FFI_TYPE_DOUBLE,r0
bf L_pass_i
mov r15,r0
and #7,r0
tst r0,r0
bt 1f
add #4,r15
1:
mov #8,r0
cmp/hs r0,r2
bt/s 2f
shlr2 r3
bsr L_pop_d
nop
2:
add #2,r2
bra L_pass
add #-8,r8
L_pop_d:
mov r2,r0
add r0,r0
add r2,r0
add #-12,r0
add r0,r0
braf r0
nop
mov.l @r15+,r4
rts
mov.l @r15+,r5
mov.l @r15+,r5
rts
mov.l @r15+,r6
mov.l @r15+,r6
rts
mov.l @r15+,r7
rts
mov.l @r15+,r7
L_pass_i:
mov #8,r0
cmp/hs r0,r2
bt/s 2f
shlr2 r3
bsr L_pop_i
nop
2:
add #1,r2
bra L_pass
add #-4,r8
L_pop_i:
mov r2,r0
shll2 r0
add #-16,r0
braf r0
nop
rts
mov.l @r15+,r4
rts
mov.l @r15+,r5
rts
mov.l @r15+,r6
rts
mov.l @r15+,r7
L_call_it:
# call function
#if (! STRUCT_VALUE_ADDRESS_WITH_ARG)
mov r10, r2
#endif
mov.l @(28,r14),r1
jsr @r1
nop
L_ret_d:
mov #FFI_TYPE_DOUBLE,r2
cmp/eq r2,r9
bf L_ret_ll
mov.l @(24,r14),r2
mov.l r0,@r2
bra L_epilogue
mov.l r1,@(4,r2)
L_ret_ll:
mov #FFI_TYPE_SINT64,r2
cmp/eq r2,r9
bt/s 1f
mov #FFI_TYPE_UINT64,r2
cmp/eq r2,r9
bf L_ret_i
1:
mov.l @(24,r14),r2
mov.l r0,@r2
bra L_epilogue
mov.l r1,@(4,r2)
L_ret_i:
mov #FFI_TYPE_FLOAT,r2
cmp/eq r2,r9
bt 1f
mov #FFI_TYPE_INT,r2
cmp/eq r2,r9
bf L_epilogue
1:
mov.l @(24,r14),r1
bra L_epilogue
mov.l r0,@r1
L_epilogue:
# Remove the space we pushed for the args
mov r14,r15
lds.l @r15+,pr
mov.l @r15+,r14
mov.l @r15+,r12
mov.l @r15+,r10
mov.l @r15+,r9
rts
mov.l @r15+,r8
#endif
.ffi_call_SYSV_end:
.size CNAME(ffi_call_SYSV),.ffi_call_SYSV_end-CNAME(ffi_call_SYSV)
.globl ffi_closure_helper_SYSV
ENTRY(ffi_closure_SYSV)
mov.l r14,@-r15
sts.l pr,@-r15
/* Stack layout:
...
32 bytes (floating register parameters, SH-4 only)
16 bytes (register parameters)
4 bytes (result)
4 bytes (5th arg)
<- new stack pointer
*/
#if defined(__SH4__)
add #-56,r15
#else
add #-24,r15
#endif
mov r15,r14
mov r14,r1
add #24,r1
mov.l r7,@-r1
mov.l r6,@-r1
mov.l r5,@-r1
mov.l r4,@-r1
mov r1,r6
#if defined(__SH4__)
mov r14,r1
add #56,r1
#ifdef __LITTLE_ENDIAN__
fmov.s fr10,@-r1
fmov.s fr11,@-r1
fmov.s fr8,@-r1
fmov.s fr9,@-r1
fmov.s fr6,@-r1
fmov.s fr7,@-r1
fmov.s fr4,@-r1
fmov.s fr5,@-r1
#else
fmov.s fr11,@-r1
fmov.s fr10,@-r1
fmov.s fr9,@-r1
fmov.s fr8,@-r1
fmov.s fr7,@-r1
fmov.s fr6,@-r1
fmov.s fr5,@-r1
fmov.s fr4,@-r1
#endif
mov r1,r7
#endif
mov r14,r1
add #4,r1
mov r1,r5
mov r14,r1
#if defined(__SH4__)
add #64,r1
#else
add #32,r1
#endif
mov.l r1,@r14
mov.l L_helper,r0
jsr @r0
mov r3,r4
shll r0
mov r0,r1
mova L_table,r0
add r1,r0
mov.w @r0,r0
mov r14,r2
braf r0
add #4,r2
0:
.align 2
L_helper:
.long ffi_closure_helper_SYSV
L_table:
.short L_case_v - 0b /* FFI_TYPE_VOID */
.short L_case_i - 0b /* FFI_TYPE_INT */
#if defined(__SH4__)
.short L_case_f - 0b /* FFI_TYPE_FLOAT */
.short L_case_d - 0b /* FFI_TYPE_DOUBLE */
.short L_case_d - 0b /* FFI_TYPE_LONGDOUBLE */
#else
.short L_case_i - 0b /* FFI_TYPE_FLOAT */
.short L_case_ll - 0b /* FFI_TYPE_DOUBLE */
.short L_case_ll - 0b /* FFI_TYPE_LONGDOUBLE */
#endif
.short L_case_uq - 0b /* FFI_TYPE_UINT8 */
.short L_case_q - 0b /* FFI_TYPE_SINT8 */
.short L_case_uh - 0b /* FFI_TYPE_UINT16 */
.short L_case_h - 0b /* FFI_TYPE_SINT16 */
.short L_case_i - 0b /* FFI_TYPE_UINT32 */
.short L_case_i - 0b /* FFI_TYPE_SINT32 */
.short L_case_ll - 0b /* FFI_TYPE_UINT64 */
.short L_case_ll - 0b /* FFI_TYPE_SINT64 */
.short L_case_v - 0b /* FFI_TYPE_STRUCT */
.short L_case_i - 0b /* FFI_TYPE_POINTER */
#if defined(__SH4__)
L_case_d:
#ifdef __LITTLE_ENDIAN__
fmov.s @r2+,fr1
bra L_case_v
fmov.s @r2,fr0
#else
fmov.s @r2+,fr0
bra L_case_v
fmov.s @r2,fr1
#endif
L_case_f:
bra L_case_v
fmov.s @r2,fr0
#endif
L_case_ll:
mov.l @r2+,r0
bra L_case_v
mov.l @r2,r1
L_case_i:
bra L_case_v
mov.l @r2,r0
L_case_q:
#ifdef __LITTLE_ENDIAN__
#else
add #3,r2
#endif
bra L_case_v
mov.b @r2,r0
L_case_uq:
#ifdef __LITTLE_ENDIAN__
#else
add #3,r2
#endif
mov.b @r2,r0
bra L_case_v
extu.b r0,r0
L_case_h:
#ifdef __LITTLE_ENDIAN__
#else
add #2,r2
#endif
bra L_case_v
mov.w @r2,r0
L_case_uh:
#ifdef __LITTLE_ENDIAN__
#else
add #2,r2
#endif
mov.w @r2,r0
extu.w r0,r0
/* fall through */
L_case_v:
#if defined(__SH4__)
add #56,r15
#else
add #24,r15
#endif
lds.l @r15+,pr
rts
mov.l @r15+,r14
.ffi_closure_SYSV_end:
.size CNAME(ffi_closure_SYSV),.ffi_closure_SYSV_end-CNAME(ffi_closure_SYSV)
|
