summaryrefslogtreecommitdiff
path: root/libffi/src/sh64/sysv.S
blob: 949f69f9884c73145b76d61cd48b11727917c948 (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
/* -----------------------------------------------------------------------
   sysv.S - Copyright (c) 2003 Kaz Kojima
   
   SuperH SHmedia 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 <fficonfig.h>
#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

#ifdef __LITTLE_ENDIAN__
#define OFS_FLT	0
#else
#define OFS_FLT	4
#endif

	.section	.text..SHmedia32,"ax"

	# r2:	ffi_prep_args
	# r3:	&ecif
	# r4:	bytes
	# r5:	flags
	# r6:	flags2
	# r7:	rvalue
	# r8:	fn

	# This assumes we are using gas.
	.align	5
ENTRY(ffi_call_SYSV)
	# Save registers
.LFB1:
	addi.l	r15, -48, r15
.LCFI0:
	st.q	r15, 40, r32
	st.q	r15, 32, r31
	st.q	r15, 24, r30
	st.q	r15, 16, r29
	st.q	r15, 8, r28
	st.l	r15, 4, r18
	st.l	r15, 0, r14
	add.l	r15, r63, r14
.LCFI1:
#	add	r4, r63, r28
	add	r5, r63, r29
	add	r6, r63, r30
	add	r7, r63, r31
	add	r8, r63, r32

	addi	r4, (64 + 7), r4
	andi	r4, ~7, r4
	sub.l	r15, r4, r15

	ptabs/l	r2, tr0
	add	r15, r63, r2
	blink	tr0, r18

	addi	r15, 64, r22
	movi	0, r0
	movi	0, r1

	pt/l	1f, tr1
	bnei/l	r29, FFI_TYPE_STRUCT, tr1
	ld.l	r15, 0, r19
	addi	r15, 8, r15
	addi	r0, 1, r0
1:

.L_pass:
	andi	r30, 3, r20
	shlri	r30, 2, r30

	pt/l	.L_call_it, tr0
	pt/l	.L_pass_i, tr1
	pt/l	.L_pass_f, tr2

	beqi/l	r20, FFI_TYPE_VOID, tr0
	beqi/l	r20, FFI_TYPE_INT, tr1
	beqi/l	r20, FFI_TYPE_FLOAT, tr2

.L_pass_d:
	addi	r0, 1, r0
	addi	r1, 1, r1
	andi	r1, ~1, r1

	pt/l	3f, tr0
	movi	12, r20
	bge/l	r1, r20, tr0

	pt/l	.L_pop_d, tr1
	pt/l	2f, tr0
	blink	tr1, r63
2:
	addi.l	r15, 8, r15
3:
	pt/l	.L_pass, tr0
	addi	r1, 2, r1
	blink	tr0, r63

.L_pop_d:
	pt/l	.L_pop_d_tbl, tr1
	gettr	tr1, r20
	shlli	r1, 2, r21
	add	r20, r21, r20
	ptabs/l	r20, tr1
	blink	tr1, r63

.L_pop_d_tbl:
	fld.d	r15, 0, dr0
	blink	tr0, r63
	fld.d	r15, 0, dr2
	blink	tr0, r63
	fld.d	r15, 0, dr4
	blink	tr0, r63
	fld.d	r15, 0, dr6
	blink	tr0, r63
	fld.d	r15, 0, dr8
	blink	tr0, r63
	fld.d	r15, 0, dr10
	blink	tr0, r63

.L_pass_f:
	addi	r0, 1, r0
	pt/l	3f, tr0
	movi	12, r20
	bge/l	r1, r20, tr0

	pt/l	.L_pop_f, tr1
	pt/l	2f, tr0
	blink	tr1, r63
2:
	addi.l	r15, 8, r15
3:
	pt/l	.L_pass, tr0
	addi	r1, 1, r1
	blink	tr0, r63

.L_pop_f:
	pt/l	.L_pop_f_tbl, tr1
	gettr	tr1, r20
	shlli	r1, 3, r21
	add	r20, r21, r20
	ptabs/l	r20, tr1
	blink	tr1, r63

.L_pop_f_tbl:
	fld.s	r15, OFS_FLT, fr0
	blink	tr0, r63
	fld.s	r15, OFS_FLT, fr1
	blink	tr0, r63
	fld.s	r15, OFS_FLT, fr2
	blink	tr0, r63
	fld.s	r15, OFS_FLT, fr3
	blink	tr0, r63
	fld.s	r15, OFS_FLT, fr4
	blink	tr0, r63
	fld.s	r15, OFS_FLT, fr5
	blink	tr0, r63
	fld.s	r15, OFS_FLT, fr6
	blink	tr0, r63
	fld.s	r15, OFS_FLT, fr7
	blink	tr0, r63
	fld.s	r15, OFS_FLT, fr8
	blink	tr0, r63
	fld.s	r15, OFS_FLT, fr9
	blink	tr0, r63
	fld.s	r15, OFS_FLT, fr10
	blink	tr0, r63
	fld.s	r15, OFS_FLT, fr11
	blink	tr0, r63

.L_pass_i:
	pt/l	3f, tr0
	movi	8, r20
	bge/l	r0, r20, tr0

	pt/l	.L_pop_i, tr1
	pt/l	2f, tr0
	blink	tr1, r63
2:
	addi.l	r15, 8, r15
3:
	pt/l	.L_pass, tr0
	addi	r0, 1, r0
	blink	tr0, r63

.L_pop_i:
	pt/l	.L_pop_i_tbl, tr1
	gettr	tr1, r20
	shlli	r0, 3, r21
	add	r20, r21, r20
	ptabs/l	r20, tr1
	blink	tr1, r63

.L_pop_i_tbl:
	ld.q	r15, 0, r2
	blink	tr0, r63
	ld.q	r15, 0, r3
	blink	tr0, r63
	ld.q	r15, 0, r4
	blink	tr0, r63
	ld.q	r15, 0, r5
	blink	tr0, r63
	ld.q	r15, 0, r6
	blink	tr0, r63
	ld.q	r15, 0, r7
	blink	tr0, r63
	ld.q	r15, 0, r8
	blink	tr0, r63
	ld.q	r15, 0, r9
	blink	tr0, r63

.L_call_it:
	# call function
	pt/l	1f, tr1
	bnei/l	r29, FFI_TYPE_STRUCT, tr1
	add	r19, r63, r2
1:
	add	r22, r63, r15
	ptabs/l	r32, tr0
	blink	tr0, r18

	pt/l	.L_ret_i, tr0
	pt/l	.L_ret_ll, tr1
	pt/l	.L_ret_d, tr2
	pt/l	.L_ret_f, tr3
	pt/l	.L_epilogue, tr4

	beqi/l	r29, FFI_TYPE_INT, tr0
	beqi/l	r29, FFI_TYPE_SINT64, tr1
	beqi/l	r29, FFI_TYPE_UINT64, tr1
	beqi/l	r29, FFI_TYPE_DOUBLE, tr2
	beqi/l	r29, FFI_TYPE_FLOAT, tr3
	blink	tr4, r63

.L_ret_d:
	fst.d	r31, 0, dr0
	blink	tr4, r63

.L_ret_ll:
	st.q	r31, 0, r2
	blink	tr4, r63

.L_ret_f:
	fst.s	r31, OFS_FLT, fr0
	blink	tr4, r63

.L_ret_i:
	st.l	r31, 0, r2
	# Fall

.L_epilogue:
	# Remove the space we pushed for the args
	add	r14, r63, r15

	ld.l	r15, 0, r14
	ld.l	r15, 4, r18
	ld.q	r15, 8, r28
	ld.q	r15, 16, r29
	ld.q	r15, 24, r30
	ld.q	r15, 32, r31
	ld.q	r15, 40, r32
	addi.l	r15, 48, r15
	ptabs	r18, tr0
	blink	tr0, r63

.LFE1:
.ffi_call_SYSV_end:
	.size	 CNAME(ffi_call_SYSV),.ffi_call_SYSV_end-CNAME(ffi_call_SYSV)

	.align	5
ENTRY(ffi_closure_SYSV)
.LFB2:
	addi.l	r15, -136, r15
.LCFI2:
	st.l	r15, 12, r18
	st.l	r15, 8, r14
	st.l	r15, 4, r12
	add	r15, r63, r14
.LCFI3:
	/* Stack layout:	
	   ...
	   64 bytes (register parameters)
	   48 bytes (floating register parameters)
	    8 bytes (result)
	    4 bytes (r18)
	    4 bytes (r14)
	    4 bytes (r12)
	    4 bytes (for align)
	   <- new stack pointer
	*/
	fst.d	r14, 24, dr0
	fst.d	r14, 32, dr2
	fst.d	r14, 40, dr4
	fst.d	r14, 48, dr6
	fst.d	r14, 56, dr8
	fst.d	r14, 64, dr10
	st.q	r14, 72, r2
	st.q	r14, 80, r3
	st.q	r14, 88, r4
	st.q	r14, 96, r5
	st.q	r14, 104, r6
	st.q	r14, 112, r7
	st.q	r14, 120, r8
	st.q	r14, 128, r9

	add	r1, r63, r2
	addi	r14, 16, r3
	addi	r14, 72, r4
	addi	r14, 24, r5
	addi	r14, 136, r6
#ifdef PIC
	movi	(((datalabel _GLOBAL_OFFSET_TABLE_-(.LPCS0-.)) >> 16) & 65535), r12
        shori	((datalabel _GLOBAL_OFFSET_TABLE_-(.LPCS0-.)) & 65535), r12
.LPCS0:	ptrel/u r12, tr0
	movi	((ffi_closure_helper_SYSV@GOTPLT) & 65535), r1
	gettr	tr0, r12
	ldx.l	r1, r12, r1
	ptabs	r1, tr0
#else
	pt/l	ffi_closure_helper_SYSV, tr0
#endif
	blink	tr0, r18

	shlli	r2, 1, r1
        movi    (((datalabel .L_table) >> 16) & 65535), r2
        shori   ((datalabel .L_table) & 65535), r2
        ldx.w   r2, r1, r1
        add     r1, r2, r1
	pt/l	.L_case_v, tr1
        ptabs   r1, tr0
        blink   tr0, r63

        .align 2
.L_table:
	.word	.L_case_v - datalabel .L_table	/* FFI_TYPE_VOID */
	.word	.L_case_i - datalabel .L_table	/* FFI_TYPE_INT */
	.word	.L_case_f - datalabel .L_table	/* FFI_TYPE_FLOAT */
	.word	.L_case_d - datalabel .L_table	/* FFI_TYPE_DOUBLE */
	.word	.L_case_d - datalabel .L_table	/* FFI_TYPE_LONGDOUBLE */
	.word	.L_case_uq - datalabel .L_table	/* FFI_TYPE_UINT8 */
	.word	.L_case_q - datalabel .L_table	/* FFI_TYPE_SINT8 */
	.word	.L_case_uh - datalabel .L_table	/* FFI_TYPE_UINT16 */
	.word	.L_case_h - datalabel .L_table	/* FFI_TYPE_SINT16 */
	.word	.L_case_i - datalabel .L_table	/* FFI_TYPE_UINT32 */
	.word	.L_case_i - datalabel .L_table	/* FFI_TYPE_SINT32 */
	.word	.L_case_ll - datalabel .L_table	/* FFI_TYPE_UINT64 */
	.word	.L_case_ll - datalabel .L_table	/* FFI_TYPE_SINT64 */
	.word	.L_case_v - datalabel .L_table	/* FFI_TYPE_STRUCT */
	.word	.L_case_i - datalabel .L_table	/* FFI_TYPE_POINTER */

        .align 2
.L_case_d:
	fld.d	r14, 16, dr0
	blink	tr1, r63
.L_case_f:
	fld.s	r14, 16, fr0
	blink	tr1, r63
.L_case_ll:
	ld.q	r14, 16, r2
	blink	tr1, r63
.L_case_i:
	ld.l	r14, 16, r2
	blink	tr1, r63
.L_case_q:
	ld.b	r14, 16, r2
	blink	tr1, r63
.L_case_uq:
	ld.ub	r14, 16, r2
	blink	tr1, r63
.L_case_h:
	ld.w	r14, 16, r2
	blink	tr1, r63
.L_case_uh:
	ld.uw	r14, 16, r2
	blink	tr1, r63
.L_case_v:
	add.l	r14, r63, r15
	ld.l	r15, 4, r12
	ld.l	r15, 8, r14
	ld.l	r15, 12, r18
	addi.l	r15, 136, r15
	ptabs	r18, tr0
	blink	tr0, r63

.LFE2:
.ffi_closure_SYSV_end:
	.size	 CNAME(ffi_closure_SYSV),.ffi_closure_SYSV_end-CNAME(ffi_closure_SYSV)

	.section	".eh_frame","aw",@progbits
__FRAME_BEGIN__:
	.4byte	.LECIE1-.LSCIE1	/* Length of Common Information Entry */
.LSCIE1:
	.4byte	0x0	/* CIE Identifier Tag */
	.byte	0x1	/* CIE Version */
	.ascii "zR\0"	/* CIE Augmentation */
	.uleb128 0x1	/* CIE Code Alignment Factor */
	.sleb128 -4	/* CIE Data Alignment Factor */
	.byte	0x12	/* CIE RA Column */
	.uleb128 0x1	/* Augmentation size */
	.byte	0x1b	/* FDE Encoding (pcrel sdata4) */
	.byte	0xc	/* DW_CFA_def_cfa */
	.uleb128 0xf
	.uleb128 0x0
	.align	2
.LECIE1:
.LSFDE1:
	.4byte	datalabel .LEFDE1-datalabel .LASFDE1	/* FDE Length */
.LASFDE1:
	.4byte	datalabel .LASFDE1-datalabel __FRAME_BEGIN__
	.4byte	datalabel .LFB1-.		/* FDE initial location */
	.4byte	datalabel .LFE1-datalabel .LFB1	/* FDE address range */
	.byte	0x4	/* DW_CFA_advance_loc4 */
	.4byte	datalabel .LCFI0-datalabel .LFB1
	.byte	0xe	/* DW_CFA_def_cfa_offset */
	.uleb128 0x30
	.byte	0x4	/* DW_CFA_advance_loc4 */
	.4byte	datalabel .LCFI1-datalabel .LCFI0
	.byte   0x8e	/* DW_CFA_offset, column 0xe */
	.uleb128 0xc
	.byte   0x92	/* DW_CFA_offset, column 0x12 */
	.uleb128 0xb
	.byte   0x9c	/* DW_CFA_offset, column 0x1c */
	.uleb128 0xa
	.byte   0x9d	/* DW_CFA_offset, column 0x1d */
	.uleb128 0x8
	.byte   0x9e	/* DW_CFA_offset, column 0x1e */
	.uleb128 0x6
	.byte   0x9f	/* DW_CFA_offset, column 0x1f */
	.uleb128 0x4
	.byte   0xa0	/* DW_CFA_offset, column 0x20 */
	.uleb128 0x2
	.byte	0xd	/* DW_CFA_def_cfa_register */
	.uleb128 0xe
	.align	2
.LEFDE1:

.LSFDE3:
	.4byte	datalabel .LEFDE3-datalabel .LASFDE3	/* FDE Length */
.LASFDE3:
	.4byte	datalabel .LASFDE3-datalabel __FRAME_BEGIN__
	.4byte	datalabel .LFB2-.		/* FDE initial location */
	.4byte	datalabel .LFE2-datalabel .LFB2	/* FDE address range */
	.byte	0x4	/* DW_CFA_advance_loc4 */
	.4byte	datalabel .LCFI2-datalabel .LFB2
	.byte	0xe	/* DW_CFA_def_cfa_offset */
	.uleb128 0x88
	.byte	0x4	/* DW_CFA_advance_loc4 */
	.4byte	datalabel .LCFI3-datalabel .LCFI2
	.byte   0x8c	/* DW_CFA_offset, column 0xc */
	.uleb128 0x21
	.byte   0x8e	/* DW_CFA_offset, column 0xe */
	.uleb128 0x20
	.byte   0x92	/* DW_CFA_offset, column 0x12 */
	.uleb128 0x1f
	.byte	0xd	/* DW_CFA_def_cfa_register */
	.uleb128 0xe
	.align	2
.LEFDE3: