summaryrefslogtreecommitdiff
path: root/libffi/src/ia64/unix.S
blob: 4d2a86d421f3a0ef8153684f6c665f8854271fbb (plain)
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
/* -----------------------------------------------------------------------
   unix.S - Copyright (c) 1998, 2008 Red Hat, Inc.
            Copyright (c) 2000 Hewlett Packard Company
   
   IA64/unix Foreign Function Interface 

   Primary author: Hans Boehm, HP Labs

   Loosely modeled on Cygnus code for other platforms.

   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 THE AUTHORS OR COPYRIGHT
   HOLDERS 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 <fficonfig.h>
#include <ffi.h>
#include "ia64_flags.h"

	.pred.safe_across_calls p1-p5,p16-p63
.text

/* int ffi_call_unix (struct ia64_args *stack, PTR64 rvalue,
		      void (*fn)(void), int flags);
 */

        .align 16
        .global	ffi_call_unix
        .proc	ffi_call_unix
ffi_call_unix:
	.prologue
	/* Bit o trickiness.  We actually share a stack frame with ffi_call.
	   Rely on the fact that ffi_call uses a vframe and don't bother
	   tracking one here at all.  */
	.fframe	0
	.save	ar.pfs, r36 // loc0
	alloc   loc0 = ar.pfs, 4, 3, 8, 0
	.save	rp, loc1
	mov 	loc1 = b0
	.body
	add	r16 = 16, in0
	mov	loc2 = gp
	mov	r8 = in1
	;;

	/* Load up all of the argument registers.  */
	ldf.fill f8 = [in0], 32
	ldf.fill f9 = [r16], 32
	;;
	ldf.fill f10 = [in0], 32
	ldf.fill f11 = [r16], 32
	;;
	ldf.fill f12 = [in0], 32
	ldf.fill f13 = [r16], 32
	;;
	ldf.fill f14 = [in0], 32
	ldf.fill f15 = [r16], 24
	;;
	ld8	out0 = [in0], 16
	ld8	out1 = [r16], 16
	;;
	ld8	out2 = [in0], 16
	ld8	out3 = [r16], 16
	;;
	ld8	out4 = [in0], 16
	ld8	out5 = [r16], 16
	;;
	ld8	out6 = [in0]
	ld8	out7 = [r16]
	;;

	/* Deallocate the register save area from the stack frame.  */
	mov	sp = in0

	/* Call the target function.  */
	ld8	r16 = [in2], 8
	;;
	ld8	gp = [in2]
	mov	b6 = r16
	br.call.sptk.many b0 = b6
	;;

	/* Dispatch to handle return value.  */
	mov	gp = loc2
	zxt1	r16 = in3
	;;
	mov	ar.pfs = loc0
	addl	r18 = @ltoffx(.Lst_table), gp
	;;
	ld8.mov	r18 = [r18], .Lst_table
	mov	b0 = loc1
	;;
	shladd	r18 = r16, 3, r18
	;;
	ld8	r17 = [r18]
	shr	in3 = in3, 8
	;;
	add	r17 = r17, r18
	;;
	mov	b6 = r17
	br	b6
	;;

.Lst_void:
	br.ret.sptk.many b0
	;;
.Lst_uint8:
	zxt1	r8 = r8
	;;
	st8	[in1] = r8
	br.ret.sptk.many b0
	;;
.Lst_sint8:
	sxt1	r8 = r8
	;;
	st8	[in1] = r8
	br.ret.sptk.many b0
	;;
.Lst_uint16:
	zxt2	r8 = r8
	;;
	st8	[in1] = r8
	br.ret.sptk.many b0
	;;
.Lst_sint16:
	sxt2	r8 = r8
	;;
	st8	[in1] = r8
	br.ret.sptk.many b0
	;;
.Lst_uint32:
	zxt4	r8 = r8
	;;
	st8	[in1] = r8
	br.ret.sptk.many b0
	;;
.Lst_sint32:
	sxt4	r8 = r8
	;;
	st8	[in1] = r8
	br.ret.sptk.many b0
	;;
.Lst_int64:
	st8	[in1] = r8
	br.ret.sptk.many b0
	;;
.Lst_float:
	stfs	[in1] = f8
	br.ret.sptk.many b0
	;;
.Lst_double:
	stfd	[in1] = f8
	br.ret.sptk.many b0
	;;
.Lst_ldouble:
	stfe	[in1] = f8
	br.ret.sptk.many b0
	;;

.Lst_small_struct:
	add	sp = -16, sp
	cmp.lt	p6, p0 = 8, in3
	cmp.lt	p7, p0 = 16, in3
	cmp.lt	p8, p0 = 24, in3
	;;
	add	r16 = 8, sp
	add	r17 = 16, sp
	add	r18 = 24, sp
	;;
	st8	[sp] = r8
(p6)	st8	[r16] = r9
	mov	out0 = in1
(p7)	st8	[r17] = r10
(p8)	st8	[r18] = r11
	mov	out1 = sp
	mov	out2 = in3
	br.call.sptk.many b0 = memcpy#
	;;
	mov	ar.pfs = loc0
	mov	b0 = loc1
	mov	gp = loc2
	br.ret.sptk.many b0

.Lst_hfa_float:
	add	r16 = 4, in1
	cmp.lt	p6, p0 = 4, in3
	;;
	stfs	[in1] = f8, 8
(p6)	stfs	[r16] = f9, 8
	cmp.lt	p7, p0 = 8, in3
	cmp.lt	p8, p0 = 12, in3
	;;
(p7)	stfs	[in1] = f10, 8
(p8)	stfs	[r16] = f11, 8
	cmp.lt	p9, p0 = 16, in3
	cmp.lt	p10, p0 = 20, in3
	;;
(p9)	stfs	[in1] = f12, 8
(p10)	stfs	[r16] = f13, 8
	cmp.lt	p6, p0 = 24, in3
	cmp.lt	p7, p0 = 28, in3
	;;
(p6)	stfs	[in1] = f14
(p7)	stfs	[r16] = f15
	br.ret.sptk.many b0
	;;

.Lst_hfa_double:
	add	r16 = 8, in1
	cmp.lt	p6, p0 = 8, in3
	;;
	stfd	[in1] = f8, 16
(p6)	stfd	[r16] = f9, 16
	cmp.lt	p7, p0 = 16, in3
	cmp.lt	p8, p0 = 24, in3
	;;
(p7)	stfd	[in1] = f10, 16
(p8)	stfd	[r16] = f11, 16
	cmp.lt	p9, p0 = 32, in3
	cmp.lt	p10, p0 = 40, in3
	;;
(p9)	stfd	[in1] = f12, 16
(p10)	stfd	[r16] = f13, 16
	cmp.lt	p6, p0 = 48, in3
	cmp.lt	p7, p0 = 56, in3
	;;
(p6)	stfd	[in1] = f14
(p7)	stfd	[r16] = f15
	br.ret.sptk.many b0
	;;

.Lst_hfa_ldouble:
	add	r16 = 16, in1
	cmp.lt	p6, p0 = 16, in3
	;;
	stfe	[in1] = f8, 32
(p6)	stfe	[r16] = f9, 32
	cmp.lt	p7, p0 = 32, in3
	cmp.lt	p8, p0 = 48, in3
	;;
(p7)	stfe	[in1] = f10, 32
(p8)	stfe	[r16] = f11, 32
	cmp.lt	p9, p0 = 64, in3
	cmp.lt	p10, p0 = 80, in3
	;;
(p9)	stfe	[in1] = f12, 32
(p10)	stfe	[r16] = f13, 32
	cmp.lt	p6, p0 = 96, in3
	cmp.lt	p7, p0 = 112, in3
	;;
(p6)	stfe	[in1] = f14
(p7)	stfe	[r16] = f15
	br.ret.sptk.many b0
	;;

        .endp ffi_call_unix

        .align 16
        .global ffi_closure_unix
        .proc ffi_closure_unix

#define FRAME_SIZE	(8*16 + 8*8 + 8*16)

ffi_closure_unix:
	.prologue
	.save	ar.pfs, r40 // loc0
	alloc   loc0 = ar.pfs, 8, 4, 4, 0
	.fframe	FRAME_SIZE
	add	r12 = -FRAME_SIZE, r12
	.save	rp, loc1
	mov	loc1 = b0
	.save	ar.unat, loc2
	mov	loc2 = ar.unat
	.body

	/* Retrieve closure pointer and real gp.  */
#ifdef _ILP32
	addp4	out0 = 0, gp
	addp4	gp = 16, gp
#else
	mov	out0 = gp
	add	gp = 16, gp
#endif
	;;
	ld8	gp = [gp]

	/* Spill all of the possible argument registers.  */
	add	r16 = 16 + 8*16, sp
	add	r17 = 16 + 8*16 + 16, sp
	;;
	stf.spill [r16] = f8, 32
	stf.spill [r17] = f9, 32
	mov	loc3 = gp
	;;
	stf.spill [r16] = f10, 32
	stf.spill [r17] = f11, 32
	;;
	stf.spill [r16] = f12, 32
	stf.spill [r17] = f13, 32
	;;
	stf.spill [r16] = f14, 32
	stf.spill [r17] = f15, 24
	;;
	.mem.offset 0, 0
	st8.spill [r16] = in0, 16
	.mem.offset 8, 0
	st8.spill [r17] = in1, 16
	add	out1 = 16 + 8*16, sp
	;;
	.mem.offset 0, 0
	st8.spill [r16] = in2, 16
	.mem.offset 8, 0
	st8.spill [r17] = in3, 16
	add	out2 = 16, sp
	;;
	.mem.offset 0, 0
	st8.spill [r16] = in4, 16
	.mem.offset 8, 0
	st8.spill [r17] = in5, 16
	mov	out3 = r8
	;;
	.mem.offset 0, 0
	st8.spill [r16] = in6
	.mem.offset 8, 0
	st8.spill [r17] = in7

	/* Invoke ffi_closure_unix_inner for the hard work.  */
	br.call.sptk.many b0 = ffi_closure_unix_inner
	;;

	/* Dispatch to handle return value.  */
	mov	gp = loc3
	zxt1	r16 = r8
	;;
	addl	r18 = @ltoffx(.Lld_table), gp
	mov	ar.pfs = loc0
	;;
	ld8.mov	r18 = [r18], .Lld_table
	mov	b0 = loc1
	;;
	shladd	r18 = r16, 3, r18
	mov	ar.unat = loc2
	;;
	ld8	r17 = [r18]
	shr	r8 = r8, 8
	;;
	add	r17 = r17, r18
	add	r16 = 16, sp
	;;
	mov	b6 = r17
	br	b6
	;;
	.label_state 1

.Lld_void:
	.restore sp
	add	sp = FRAME_SIZE, sp
	br.ret.sptk.many b0
	;;
.Lld_int:
	.body
	.copy_state 1
	ld8	r8 = [r16]
	.restore sp
	add	sp = FRAME_SIZE, sp
	br.ret.sptk.many b0
	;;
.Lld_float:
	.body
	.copy_state 1
	ldfs	f8 = [r16]
	.restore sp
	add	sp = FRAME_SIZE, sp
	br.ret.sptk.many b0
	;;
.Lld_double:
	.body
	.copy_state 1
	ldfd	f8 = [r16]
	.restore sp
	add	sp = FRAME_SIZE, sp
	br.ret.sptk.many b0
	;;
.Lld_ldouble:
	.body
	.copy_state 1
	ldfe	f8 = [r16]
	.restore sp
	add	sp = FRAME_SIZE, sp
	br.ret.sptk.many b0
	;;

.Lld_small_struct:
	.body
	.copy_state 1
	add	r17 = 8, r16
	cmp.lt	p6, p0 = 8, r8
	cmp.lt	p7, p0 = 16, r8
	cmp.lt	p8, p0 = 24, r8
	;;
	ld8	r8 = [r16], 16
(p6)	ld8	r9 = [r17], 16
	;;
(p7)	ld8	r10 = [r16]
(p8)	ld8	r11 = [r17]
	.restore sp
	add	sp = FRAME_SIZE, sp
	br.ret.sptk.many b0
	;;

.Lld_hfa_float:
	.body
	.copy_state 1
	add	r17 = 4, r16
	cmp.lt	p6, p0 = 4, r8
	;;
	ldfs	f8 = [r16], 8
(p6)	ldfs	f9 = [r17], 8
	cmp.lt	p7, p0 = 8, r8
	cmp.lt	p8, p0 = 12, r8
	;;
(p7)	ldfs	f10 = [r16], 8
(p8)	ldfs	f11 = [r17], 8
	cmp.lt	p9, p0 = 16, r8
	cmp.lt	p10, p0 = 20, r8
	;;
(p9)	ldfs	f12 = [r16], 8
(p10)	ldfs	f13 = [r17], 8
	cmp.lt	p6, p0 = 24, r8
	cmp.lt	p7, p0 = 28, r8
	;;
(p6)	ldfs	f14 = [r16]
(p7)	ldfs	f15 = [r17]
	.restore sp
	add	sp = FRAME_SIZE, sp
	br.ret.sptk.many b0
	;;

.Lld_hfa_double:
	.body
	.copy_state 1
	add	r17 = 8, r16
	cmp.lt	p6, p0 = 8, r8
	;;
	ldfd	f8 = [r16], 16
(p6)	ldfd	f9 = [r17], 16
	cmp.lt	p7, p0 = 16, r8
	cmp.lt	p8, p0 = 24, r8
	;;
(p7)	ldfd	f10 = [r16], 16
(p8)	ldfd	f11 = [r17], 16
	cmp.lt	p9, p0 = 32, r8
	cmp.lt	p10, p0 = 40, r8
	;;
(p9)	ldfd	f12 = [r16], 16
(p10)	ldfd	f13 = [r17], 16
	cmp.lt	p6, p0 = 48, r8
	cmp.lt	p7, p0 = 56, r8
	;;
(p6)	ldfd	f14 = [r16]
(p7)	ldfd	f15 = [r17]
	.restore sp
	add	sp = FRAME_SIZE, sp
	br.ret.sptk.many b0
	;;

.Lld_hfa_ldouble:
	.body
	.copy_state 1
	add	r17 = 16, r16
	cmp.lt	p6, p0 = 16, r8
	;;
	ldfe	f8 = [r16], 32
(p6)	ldfe	f9 = [r17], 32
	cmp.lt	p7, p0 = 32, r8
	cmp.lt	p8, p0 = 48, r8
	;;
(p7)	ldfe	f10 = [r16], 32
(p8)	ldfe	f11 = [r17], 32
	cmp.lt	p9, p0 = 64, r8
	cmp.lt	p10, p0 = 80, r8
	;;
(p9)	ldfe	f12 = [r16], 32
(p10)	ldfe	f13 = [r17], 32
	cmp.lt	p6, p0 = 96, r8
	cmp.lt	p7, p0 = 112, r8
	;;
(p6)	ldfe	f14 = [r16]
(p7)	ldfe	f15 = [r17]
	.restore sp
	add	sp = FRAME_SIZE, sp
	br.ret.sptk.many b0
	;;

	.endp	ffi_closure_unix

	.section .rodata
	.align	8
.Lst_table:
	data8	@pcrel(.Lst_void)		// FFI_TYPE_VOID
	data8	@pcrel(.Lst_sint32)		// FFI_TYPE_INT
	data8	@pcrel(.Lst_float)		// FFI_TYPE_FLOAT
	data8	@pcrel(.Lst_double)		// FFI_TYPE_DOUBLE
	data8	@pcrel(.Lst_ldouble)		// FFI_TYPE_LONGDOUBLE
	data8	@pcrel(.Lst_uint8)		// FFI_TYPE_UINT8
	data8	@pcrel(.Lst_sint8)		// FFI_TYPE_SINT8
	data8	@pcrel(.Lst_uint16)		// FFI_TYPE_UINT16
	data8	@pcrel(.Lst_sint16)		// FFI_TYPE_SINT16
	data8	@pcrel(.Lst_uint32)		// FFI_TYPE_UINT32
	data8	@pcrel(.Lst_sint32)		// FFI_TYPE_SINT32
	data8	@pcrel(.Lst_int64)		// FFI_TYPE_UINT64
	data8	@pcrel(.Lst_int64)		// FFI_TYPE_SINT64
	data8	@pcrel(.Lst_void)		// FFI_TYPE_STRUCT
	data8	@pcrel(.Lst_int64)		// FFI_TYPE_POINTER
	data8 	@pcrel(.Lst_small_struct)	// FFI_IA64_TYPE_SMALL_STRUCT
	data8	@pcrel(.Lst_hfa_float)		// FFI_IA64_TYPE_HFA_FLOAT
	data8	@pcrel(.Lst_hfa_double)		// FFI_IA64_TYPE_HFA_DOUBLE
	data8	@pcrel(.Lst_hfa_ldouble)	// FFI_IA64_TYPE_HFA_LDOUBLE

.Lld_table:
	data8	@pcrel(.Lld_void)		// FFI_TYPE_VOID
	data8	@pcrel(.Lld_int)		// FFI_TYPE_INT
	data8	@pcrel(.Lld_float)		// FFI_TYPE_FLOAT
	data8	@pcrel(.Lld_double)		// FFI_TYPE_DOUBLE
	data8	@pcrel(.Lld_ldouble)		// FFI_TYPE_LONGDOUBLE
	data8	@pcrel(.Lld_int)		// FFI_TYPE_UINT8
	data8	@pcrel(.Lld_int)		// FFI_TYPE_SINT8
	data8	@pcrel(.Lld_int)		// FFI_TYPE_UINT16
	data8	@pcrel(.Lld_int)		// FFI_TYPE_SINT16
	data8	@pcrel(.Lld_int)		// FFI_TYPE_UINT32
	data8	@pcrel(.Lld_int)		// FFI_TYPE_SINT32
	data8	@pcrel(.Lld_int)		// FFI_TYPE_UINT64
	data8	@pcrel(.Lld_int)		// FFI_TYPE_SINT64
	data8	@pcrel(.Lld_void)		// FFI_TYPE_STRUCT
	data8	@pcrel(.Lld_int)		// FFI_TYPE_POINTER
	data8 	@pcrel(.Lld_small_struct)	// FFI_IA64_TYPE_SMALL_STRUCT
	data8	@pcrel(.Lld_hfa_float)		// FFI_IA64_TYPE_HFA_FLOAT
	data8	@pcrel(.Lld_hfa_double)		// FFI_IA64_TYPE_HFA_DOUBLE
	data8	@pcrel(.Lld_hfa_ldouble)	// FFI_IA64_TYPE_HFA_LDOUBLE

#if defined __ELF__ && defined __linux__
	.section	.note.GNU-stack,"",@progbits
#endif