about summary refs log tree commit diff
path: root/sysdeps/sh/dl-trampoline.S
blob: 92d2629aa6f9c424b4e45c8a7108c8f594984be3 (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
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
/* PLT trampolines.  SH version.
   Copyright (C) 2005-2019 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <sysdep.h>

	.text
	.globl _dl_runtime_resolve
	.type _dl_runtime_resolve, @function
	cfi_startproc
	.align 5
_dl_runtime_resolve:
	mov.l r2,@-r15
	cfi_adjust_cfa_offset (4)
	mov.l r3,@-r15
	cfi_adjust_cfa_offset (4)
	mov.l r4,@-r15
	cfi_adjust_cfa_offset (4)
	mov.l r5,@-r15
	cfi_adjust_cfa_offset (4)
	mov.l r6,@-r15
	cfi_adjust_cfa_offset (4)
	mov.l r7,@-r15
	cfi_adjust_cfa_offset (4)
	mov.l r12,@-r15
	cfi_adjust_cfa_offset (4)
	sts.l macl,@-r15
	cfi_adjust_cfa_offset (4)
	sts.l mach,@-r15
	cfi_adjust_cfa_offset (4)
	movt r3			! Save T flag.
	mov.l r3,@-r15
	cfi_adjust_cfa_offset (4)
#ifdef HAVE_FPU
	sts.l	fpscr,@-r15
	cfi_adjust_cfa_offset (4)
	mov	#8,r3
	swap.w	r3,r3
	lds	r3,fpscr
	fmov.s	fr11,@-r15
	cfi_adjust_cfa_offset (4)
	fmov.s	fr10,@-r15
	cfi_adjust_cfa_offset (4)
	fmov.s	fr9,@-r15
	cfi_adjust_cfa_offset (4)
	fmov.s	fr8,@-r15
	cfi_adjust_cfa_offset (4)
	fmov.s	fr7,@-r15
	cfi_adjust_cfa_offset (4)
	fmov.s	fr6,@-r15
	cfi_adjust_cfa_offset (4)
	fmov.s	fr5,@-r15
	cfi_adjust_cfa_offset (4)
	fmov.s	fr4,@-r15
	cfi_adjust_cfa_offset (4)
#endif
	sts.l pr,@-r15
	cfi_adjust_cfa_offset (4)
	tst r0,r0
	bt 1f
	mov r0,r2
1:
	mov r0,r4		! PLT type
	mov r2,r5		! link map address
#ifdef SHARED
	mov.l 2f,r2
	mova 2f,r0
	add r0,r2		! Get GOT address in r2
	mov.l 3f,r0
	add r2,r0
#else
	mov.l 3f,r0
#endif
	jsr @r0			! Call resolver.
	 mov r1,r6		! reloc offset
	lds.l @r15+,pr		! Get register content back.
	cfi_adjust_cfa_offset (-4)
#ifdef HAVE_FPU
	fmov.s	@r15+,fr4
	cfi_adjust_cfa_offset (-4)
	fmov.s	@r15+,fr5
	cfi_adjust_cfa_offset (-4)
	fmov.s	@r15+,fr6
	cfi_adjust_cfa_offset (-4)
	fmov.s	@r15+,fr7
	cfi_adjust_cfa_offset (-4)
	fmov.s	@r15+,fr8
	cfi_adjust_cfa_offset (-4)
	fmov.s	@r15+,fr9
	cfi_adjust_cfa_offset (-4)
	fmov.s	@r15+,fr10
	cfi_adjust_cfa_offset (-4)
	fmov.s	@r15+,fr11
	cfi_adjust_cfa_offset (-4)
	lds.l	@r15+,fpscr
	cfi_adjust_cfa_offset (-4)
#endif
	mov.l @r15+,r3
	cfi_adjust_cfa_offset (-4)
	shal r3			! Lode T flag.
	lds.l @r15+,mach
	cfi_adjust_cfa_offset (-4)
	lds.l @r15+,macl
	cfi_adjust_cfa_offset (-4)
	mov.l @r15+,r12
	cfi_adjust_cfa_offset (-4)
	mov.l @r15+,r7
	cfi_adjust_cfa_offset (-4)
	mov.l @r15+,r6
	cfi_adjust_cfa_offset (-4)
	mov.l @r15+,r5
	cfi_adjust_cfa_offset (-4)
	mov.l @r15+,r4
	cfi_adjust_cfa_offset (-4)
	mov.l @r15+,r3
	cfi_adjust_cfa_offset (-4)
	jmp @r0			! Jump to function address.
	 mov.l @r15+,r2
	cfi_adjust_cfa_offset (-4)
	.align 2
#ifdef SHARED
2:	.long _GLOBAL_OFFSET_TABLE_
3:	.long _dl_fixup@GOTOFF
#else
3:	.long _dl_fixup
#endif
	cfi_endproc
	.size _dl_runtime_resolve, .-_dl_runtime_resolve


	.globl _dl_runtime_profile
	.type _dl_runtime_profile,@function
	cfi_startproc
	.align 5
_dl_runtime_profile:
	mov.l r12,@-r15
	cfi_adjust_cfa_offset (4)
#ifdef HAVE_FPU
	sts.l	fpscr,@-r15
	cfi_adjust_cfa_offset (4)
	mov	#8,r12
	swap.w	r12,r12
	lds	r12,fpscr
	fmov.s	fr11,@-r15
	cfi_adjust_cfa_offset (4)
	fmov.s	fr10,@-r15
	cfi_adjust_cfa_offset (4)
	fmov.s	fr9,@-r15
	cfi_adjust_cfa_offset (4)
	fmov.s	fr8,@-r15
	cfi_adjust_cfa_offset (4)
	fmov.s	fr7,@-r15
	cfi_adjust_cfa_offset (4)
	fmov.s	fr6,@-r15
	cfi_adjust_cfa_offset (4)
	fmov.s	fr5,@-r15
	cfi_adjust_cfa_offset (4)
	fmov.s	fr4,@-r15
	cfi_adjust_cfa_offset (4)
#else
	add #-36,r15
	cfi_adjust_cfa_offset (36)
#endif
	mov.l r7,@-r15
	cfi_adjust_cfa_offset (4)
	mov.l r6,@-r15
	cfi_adjust_cfa_offset (4)
	mov.l r5,@-r15
	cfi_adjust_cfa_offset (4)
	mov.l r4,@-r15
	cfi_adjust_cfa_offset (4)
	mov.l r3,@-r15
	cfi_adjust_cfa_offset (4)
	mov.l r2,@-r15
	cfi_adjust_cfa_offset (4)
	sts.l macl,@-r15
	cfi_adjust_cfa_offset (4)
	sts.l mach,@-r15
	cfi_adjust_cfa_offset (4)
	movt r3			! Save T flag.
	mov.l r3,@-r15
	cfi_adjust_cfa_offset (4)
	sts.l pr,@-r15
	cfi_adjust_cfa_offset (4)
	tst r0,r0
	bt 1f
	mov r0,r2
1:
	mov r0,r4		! PLT type
	mov r2,r5		! link map address
	sts pr,r7		! return address
	add #-24,r15
	cfi_adjust_cfa_offset (24)
	mov #40,r0
	add r15,r0
	mov.l r0,@r15		! Address of the register structure
	mov #-1,r0
	mov.l r0,@(8,r15)
	mov #8,r0
	add r15,r0
	mov.l r0,@(4,r15)
	mov.l r5,@(12,r15)
	mov.l r1,@(16,r15)
#ifdef SHARED
	mov.l 2f,r12
	mova 2f,r0
	add r0,r12		! Get GOT address in r12
	mov.l 3f,r0
	add r12,r0
#else
	mov.l 3f,r0
#endif
	jsr @r0			! Call resolver.
	 mov r1,r6		! reloc offset
	mov.l @(8,r15),r1
	cmp/pz r1
	bt 4f
	add #24,r15
	cfi_adjust_cfa_offset (-24)
	lds.l @r15+,pr		! Get register content back.
	cfi_adjust_cfa_offset (-4)
	mov.l @r15+,r3
	cfi_adjust_cfa_offset (-4)
	shal r3			! Lode T flag.
	lds.l @r15+,mach
	cfi_adjust_cfa_offset (-4)
	lds.l @r15+,macl
	cfi_adjust_cfa_offset (-4)
	mov.l @r15+,r2
	cfi_adjust_cfa_offset (-4)
	mov.l @r15+,r3
	cfi_adjust_cfa_offset (-4)
	mov.l @r15+,r4
	cfi_adjust_cfa_offset (-4)
	mov.l @r15+,r5
	cfi_adjust_cfa_offset (-4)
	mov.l @r15+,r6
	cfi_adjust_cfa_offset (-4)
	mov.l @r15+,r7
	cfi_adjust_cfa_offset (-4)
#ifdef HAVE_FPU
	fmov.s	@r15+,fr4
	cfi_adjust_cfa_offset (-4)
	fmov.s	@r15+,fr5
	cfi_adjust_cfa_offset (-4)
	fmov.s	@r15+,fr6
	cfi_adjust_cfa_offset (-4)
	fmov.s	@r15+,fr7
	cfi_adjust_cfa_offset (-4)
	fmov.s	@r15+,fr8
	cfi_adjust_cfa_offset (-4)
	fmov.s	@r15+,fr9
	cfi_adjust_cfa_offset (-4)
	fmov.s	@r15+,fr10
	cfi_adjust_cfa_offset (-4)
	fmov.s	@r15+,fr11
	cfi_adjust_cfa_offset (-4)
	lds.l	@r15+,fpscr
	cfi_adjust_cfa_offset (-4)
#else
	add #36,r15
	cfi_adjust_cfa_offset (-36)
#endif
	jmp @r0			! Jump to function address.
	 mov.l @r15+,r12
	cfi_adjust_cfa_offset (-4)
	.align 2
#ifdef SHARED
2:	.long _GLOBAL_OFFSET_TABLE_
3:	.long _dl_profile_fixup@GOTOFF
#else
3:	.long _dl_profile_fixup
#endif

	cfi_adjust_cfa_offset (104)
4:
	mov #104,r3
	add r15,r3		! Original stack
	mov.l r8,@(20,r15)
	cfi_rel_offset (r8, 20)
	mov r15,r8
	sub r1,r15
	shlr2 r15
	shll2 r15
	mov r15,r4
	shlr2 r1
	tst r1,r1
5:
	bt/s 6f
	 dt r1
	mov.l @r3+,r2
	mov.l r2,@r4
	bra 5b
	 add #4,r4
6:
	mov.l @r8,r12
	mov.l @r12+,r2
	mov.l @r12+,r3
	mov.l @r12+,r4
	mov.l @r12+,r5
	mov.l @r12+,r6
	mov.l @r12+,r7
#ifdef HAVE_FPU
	fmov.s	@r12+,fr4
	fmov.s	@r12+,fr5
	fmov.s	@r12+,fr6
	fmov.s	@r12+,fr7
	fmov.s	@r12+,fr8
	fmov.s	@r12+,fr9
	fmov.s	@r12+,fr10
	fmov.s	@r12+,fr11
	lds.l	@r12+,fpscr
#else
	add #36,r2
#endif
	jsr @r0			! Call function.
	 nop
	mov r8,r15
	mov.l @(12,r15),r4	! link map address
	mov.l @(16,r15),r5	! reloc offset
	mov.l @r15,r6		! input registers
#ifdef HAVE_FPU
	mov #16,r8
	add r15,r8
	fmov.s fr1,@-r8
	fmov.s fr0,@-r8
#else
	mov #8,r8
	add r15,r8
#endif
	mov.l r1,@-r8
	mov.l r0,@-r8
	mov.l @(20,r15),r8
	cfi_restore (r8)
#ifdef SHARED
	mov.l 7f,r12
	mova 7f,r0
	add r0,r12		! Get GOT address in r12
	mov.l 8f,r0
	add r12,r0
#else
	mov.l 8f,r0
#endif
	jsr @r0
	 mov r15,r7		! output registers
	mov.l @r15+,r0
	cfi_adjust_cfa_offset (-4)
	mov.l @r15+,r1
	cfi_adjust_cfa_offset (-4)
#ifdef HAVE_FPU
	fmov.s @r15+,fr0
	cfi_adjust_cfa_offset (-4)
	fmov.s @r15+,fr1
	cfi_adjust_cfa_offset (-4)
	add #8,r15
	cfi_adjust_cfa_offset (-8)
#else
	add #16,r15
	cfi_adjust_cfa_offset (-16)
#endif
	lds.l @r15+,pr		! Get register content back.
	cfi_adjust_cfa_offset (-4)
	mov.l @r15+,r3
	cfi_adjust_cfa_offset (-4)
	shal r3			! Lode T flag.
	lds.l @r15+,mach
	cfi_adjust_cfa_offset (-4)
	lds.l @r15+,macl
	cfi_adjust_cfa_offset (-4)
	mov.l @r15+,r2
	cfi_adjust_cfa_offset (-4)
	mov.l @r15+,r3
	cfi_adjust_cfa_offset (-4)
	mov.l @r15+,r4
	cfi_adjust_cfa_offset (-4)
	mov.l @r15+,r5
	cfi_adjust_cfa_offset (-4)
	mov.l @r15+,r6
	cfi_adjust_cfa_offset (-4)
	mov.l @r15+,r7
	cfi_adjust_cfa_offset (-4)
#ifdef HAVE_FPU
	fmov.s	@r15+,fr4
	cfi_adjust_cfa_offset (-4)
	fmov.s	@r15+,fr5
	cfi_adjust_cfa_offset (-4)
	fmov.s	@r15+,fr6
	cfi_adjust_cfa_offset (-4)
	fmov.s	@r15+,fr7
	cfi_adjust_cfa_offset (-4)
	fmov.s	@r15+,fr8
	cfi_adjust_cfa_offset (-4)
	fmov.s	@r15+,fr9
	cfi_adjust_cfa_offset (-4)
	fmov.s	@r15+,fr10
	cfi_adjust_cfa_offset (-4)
	fmov.s	@r15+,fr11
	cfi_adjust_cfa_offset (-4)
	lds.l	@r15+,fpscr
	cfi_adjust_cfa_offset (-4)
#else
	add #36,r15
	cfi_adjust_cfa_offset (-36)
#endif
	rts			! Jump to function address.
	 mov.l @r15+,r12
	cfi_adjust_cfa_offset (-4)
	cfi_endproc
	.align 2
#ifdef SHARED
7:	.long _GLOBAL_OFFSET_TABLE_
8:	.long _dl_call_pltexit@GOTOFF
#else
8:	.long _dl_call_pltexit
#endif
	.size _dl_runtime_profile, .-_dl_runtime_profile