aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/mips/tst-abi-interlink.c
blob: 125f98ffeb669878cba07ecdebabe8f9553585cd (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
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
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
/* Copyright (C) 2014-2016 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 <sys/prctl.h>
#include <dlfcn.h>
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <errno.h>

#if defined PR_GET_FP_MODE && defined PR_SET_FP_MODE
# define HAVE_PRCTL_FP_MODE 1
# define FR1_MODE (PR_FP_MODE_FR)
# define FRE_MODE (PR_FP_MODE_FR | PR_FP_MODE_FRE)
#else
# define HAVE_PRCTL_FP_MODE 0
# define FR1_MODE 0x1
# define FRE_MODE 0x2
#endif

#define STR_VAL(VAL) #VAL
#define N_STR(VAL) STR_VAL(VAL)

#define START_STATE(NAME) 					\
case s_ ## NAME: 						\
  {								\
    switch (obj) 						\
      {

#define END_STATE						\
      default:							\
        return false;						\
      }								\
  break;							\
  }

#define NEXT(OBJ, NEXT_STATE)					\
case o_ ## OBJ: 						\
  current_fp_state = s_ ## NEXT_STATE;				\
  break;

#define NEXT_REQ_FR1(OBJ, NEXT_STATE)				\
case o_ ## OBJ:							\
  {								\
    if (has_fr1)						\
      current_fp_state = s_ ## NEXT_STATE;			\
    else							\
      return false;						\
  }								\
  break;

#define NEXT_REQ_FR0(OBJ, NEXT_STATE) 				\
case o_ ## OBJ:							\
  {								\
    if (!is_r6							\
        || (is_r6 && has_fr1 && has_fre))			\
      current_fp_state = s_ ## NEXT_STATE;			\
    else 							\
      return false;						\
  }								\
  break;

#define NEXT_REQ_FRE(OBJ, NEXT_STATE)				\
case o_ ## OBJ: 						\
  {								\
    if (has_fr1 && has_fre)					\
      current_fp_state = s_ ## NEXT_STATE;			\
    else							\
      return false;						\
  }								\
  break;

#define NEXT_NO_MODE_CHANGE(OBJ, NEXT_STATE)			\
case o_ ## OBJ: 						\
  {								\
    if (current_mode_valid_p (s_ ## NEXT_STATE))			\
      {								\
	current_fp_state = s_ ## NEXT_STATE;			\
	cant_change_mode = true;				\
      }								\
    else							\
      return false;						\
  }								\
  break;

static const char * const shared_lib_names[] =
  {
    "tst-abi-fpanymod.so", "tst-abi-fpsoftmod.so", "tst-abi-fpsinglemod.so",
    "tst-abi-fp32mod.so", "tst-abi-fp64mod.so", "tst-abi-fp64amod.so",
    "tst-abi-fpxxmod.so", "tst-abi-fpxxomod.so"
  };

struct fp_mode_req
{
  int mode1;
  int mode2;
  int mode3;
};

enum fp_obj
{
  o_any,
  o_soft,
  o_single,
  o_fp32,
  o_fp64,
  o_fp64a,
  o_fpxx,
  o_fpxxo,
  o_max
};

enum fp_state
{
  s_any,
  s_soft,
  s_single,
  s_fp32,
  s_fpxx,
  s_fpxxo,
  s_fp64a,
  s_fp64,
  s_fpxxo_fpxx,
  s_fp32_fpxx,
  s_fp32_fpxxo,
  s_fp32_fpxxo_fpxx,
  s_fp32_fp64a_fpxx,
  s_fp32_fp64a_fpxxo,
  s_fp32_fp64a_fpxxo_fpxx,
  s_fp64a_fp32,
  s_fp64a_fpxx,
  s_fp64a_fpxxo,
  s_fp64a_fp64,
  s_fp64a_fp64_fpxx,
  s_fp64a_fp64_fpxxo,
  s_fp64a_fpxx_fpxxo,
  s_fp64a_fp64_fpxxo_fpxx,
  s_fp64_fpxx,
  s_fp64_fpxxo,
  s_fp64_fpxx_fpxxo
};


static int current_fp_mode;
static bool cant_change_mode = false;
static bool has_fr1 = false;
static bool has_fre = false;
static bool is_r6 = false;
static unsigned int fp_obj_count[o_max];
void * shared_lib_ptrs[o_max];
static enum fp_state current_fp_state = s_any;
static enum fp_obj test_objects[FPABI_COUNT] = { FPABI_LIST };

/* This function will return the valid FP modes for the specified state.  */

static struct fp_mode_req
compute_fp_modes (enum fp_state state)
{
  struct fp_mode_req requirements;

  requirements.mode1 = -1;
  requirements.mode2 = -1;
  requirements.mode3 = -1;

  switch (state)
    {
    case s_single:
      {
        if (is_r6)
	  requirements.mode1 = FR1_MODE;
	else
	  {
	    requirements.mode1 = 0;
	    requirements.mode2 = FR1_MODE;
	  }
	break;
      }
    case s_fp32:
    case s_fp32_fpxx:
    case s_fp32_fpxxo:
    case s_fp32_fpxxo_fpxx:
      {
	if (is_r6)
	  requirements.mode1 = FRE_MODE;
	else
	  {
	    requirements.mode1 = 0;
	    requirements.mode2 = FRE_MODE;
	  }
	break;
      }
    case s_fpxx:
    case s_fpxxo:
    case s_fpxxo_fpxx:
    case s_any:
    case s_soft:
      {
	if (is_r6)
	  {
	    requirements.mode1 = FR1_MODE;
	    requirements.mode2 = FRE_MODE;
	  }
	else
	  {
	    requirements.mode1 = 0;
	    requirements.mode2 = FR1_MODE;
	    requirements.mode3 = FRE_MODE;
	  }
	break;
      }
    case s_fp64a:
    case s_fp64a_fpxx:
    case s_fp64a_fpxxo:
    case s_fp64a_fpxx_fpxxo:
      {
	requirements.mode1 = FR1_MODE;
	requirements.mode2 = FRE_MODE;
	break;
      }
    case s_fp64:
    case s_fp64_fpxx:
    case s_fp64_fpxxo:
    case s_fp64_fpxx_fpxxo:
    case s_fp64a_fp64:
    case s_fp64a_fp64_fpxx:
    case s_fp64a_fp64_fpxxo:
    case s_fp64a_fp64_fpxxo_fpxx:
      {
	requirements.mode1 = FR1_MODE;
	break;
      }
    case s_fp64a_fp32:
    case s_fp32_fp64a_fpxx:
    case s_fp32_fp64a_fpxxo:
    case s_fp32_fp64a_fpxxo_fpxx:
      {
        requirements.mode1 = FRE_MODE;
        break;
      }
    }
  return requirements;
}

/* Check the current mode is suitable for the specified state.  */

static bool
current_mode_valid_p (enum fp_state s)
{
  struct fp_mode_req req = compute_fp_modes (s);
  return (req.mode1 == current_fp_mode
	  || req.mode2 == current_fp_mode
	  || req.mode3 == current_fp_mode);
}

/* Run the state machine by adding a new object.  */

static bool
set_next_fp_state (enum fp_obj obj)
{
  cant_change_mode = false;
  switch (current_fp_state)
    {

    START_STATE(soft)
    NEXT(soft,soft)
    NEXT(any,soft)
    END_STATE

    START_STATE(single)
    NEXT(single,single)
    NEXT(any,single)
    END_STATE

    START_STATE(any)
    NEXT_REQ_FR0(fp32, fp32)
    NEXT(fpxx, fpxx)
    NEXT(fpxxo, fpxxo)
    NEXT_REQ_FR1(fp64a, fp64a)
    NEXT_REQ_FR1(fp64, fp64)
    NEXT(any,any)
    NEXT(soft,soft)
    NEXT(single,single)
    END_STATE

    START_STATE(fp32)
    NEXT_REQ_FR0(fp32,fp32)
    NEXT(fpxx, fp32_fpxx)
    NEXT(fpxxo, fp32_fpxxo)
    NEXT_REQ_FRE(fp64a, fp64a_fp32)
    NEXT(any,fp32)
    END_STATE

    START_STATE(fpxx)
    NEXT_REQ_FR0(fp32, fp32_fpxx)
    NEXT_REQ_FR1(fp64, fp64_fpxx)
    NEXT_REQ_FR1(fp64a, fp64a_fpxx)
    NEXT(fpxxo, fpxxo_fpxx)
    NEXT(fpxx,fpxx)
    NEXT(any,fpxx)
    END_STATE

    START_STATE(fpxxo)
    NEXT_NO_MODE_CHANGE(fp32, fp32_fpxxo)
    NEXT_NO_MODE_CHANGE(fp64, fp64_fpxxo)
    NEXT_NO_MODE_CHANGE(fp64a, fp64a_fpxxo)
    NEXT_NO_MODE_CHANGE(fpxx, fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(fpxxo,fpxxo)
    NEXT_NO_MODE_CHANGE(any,fpxxo)
    END_STATE

    START_STATE(fp64a)
    NEXT_REQ_FRE(fp32, fp64a_fp32)
    NEXT_REQ_FR1(fp64, fp64a_fp64)
    NEXT(fpxxo, fp64a_fpxxo)
    NEXT(fpxx, fp64a_fpxx)
    NEXT_REQ_FR1(fp64a, fp64a)
    NEXT(any, fp64a)
    END_STATE

    START_STATE(fp64)
    NEXT_REQ_FR1(fp64a, fp64a_fp64)
    NEXT(fpxxo, fp64_fpxxo)
    NEXT(fpxx, fp64_fpxx)
    NEXT_REQ_FR1(fp64, fp64)
    NEXT(any, fp64)
    END_STATE

    START_STATE(fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(fp32, fp32_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(fp64, fp64_fpxx_fpxxo)
    NEXT_NO_MODE_CHANGE(fp64a, fp64a_fpxx_fpxxo)
    NEXT_NO_MODE_CHANGE(fpxx, fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(fpxxo, fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(any, fpxxo_fpxx)
    END_STATE

    START_STATE(fp32_fpxx)
    NEXT_REQ_FR0(fp32, fp32_fpxx)
    NEXT(fpxx, fp32_fpxx)
    NEXT(fpxxo, fp32_fpxxo_fpxx)
    NEXT_REQ_FRE(fp64a, fp32_fp64a_fpxx)
    NEXT(any, fp32_fpxx)
    END_STATE

    START_STATE(fp32_fpxxo)
    NEXT_NO_MODE_CHANGE(fp32, fp32_fpxxo)
    NEXT_NO_MODE_CHANGE(fpxxo, fp32_fpxxo)
    NEXT_NO_MODE_CHANGE(fpxx, fp32_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(fp64a, fp32_fp64a_fpxxo)
    NEXT_NO_MODE_CHANGE(any, fp32_fpxxo)
    END_STATE

    START_STATE(fp32_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(fp32, fp32_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(fpxxo, fp32_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(fpxx, fp32_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(fp64a, fp32_fp64a_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(any, fp32_fpxxo_fpxx)
    END_STATE

    START_STATE(fp64a_fp32)
    NEXT_REQ_FRE(fp32, fp64a_fp32)
    NEXT_REQ_FRE(fp64a, fp64a_fp32)
    NEXT(fpxxo, fp32_fp64a_fpxxo)
    NEXT(fpxx, fp32_fp64a_fpxx)
    NEXT(any, fp64a_fp32)
    END_STATE

    START_STATE(fp64a_fpxx)
    NEXT_REQ_FRE(fp32, fp32_fp64a_fpxx)
    NEXT_REQ_FR1(fp64a, fp64a_fpxx)
    NEXT(fpxx, fp64a_fpxx)
    NEXT(fpxxo, fp64a_fpxx_fpxxo)
    NEXT_REQ_FR1(fp64, fp64a_fp64_fpxx)
    NEXT(any, fp64a_fpxx)
    END_STATE

    START_STATE(fp64a_fpxxo)
    NEXT_NO_MODE_CHANGE(fp32, fp32_fp64a_fpxxo)
    NEXT_NO_MODE_CHANGE(fp64a, fp64a_fpxxo)
    NEXT_NO_MODE_CHANGE(fpxx, fp64a_fpxx_fpxxo)
    NEXT_NO_MODE_CHANGE(fpxxo, fp64a_fpxxo)
    NEXT_NO_MODE_CHANGE(fp64, fp64a_fp64_fpxxo)
    NEXT_NO_MODE_CHANGE(any, fp64a_fpxxo)
    END_STATE

    START_STATE(fp64a_fpxx_fpxxo)
    NEXT_NO_MODE_CHANGE(fp32, fp32_fp64a_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(fp64a, fp64a_fpxx_fpxxo)
    NEXT_NO_MODE_CHANGE(fpxx, fp64a_fpxx_fpxxo)
    NEXT_NO_MODE_CHANGE(fpxxo, fp64a_fpxx_fpxxo)
    NEXT_NO_MODE_CHANGE(fp64, fp64a_fp64_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(any, fp64a_fpxx_fpxxo)
    END_STATE

    START_STATE(fp64_fpxx)
    NEXT_REQ_FR1(fp64a, fp64a_fp64_fpxx)
    NEXT(fpxxo, fp64_fpxx_fpxxo)
    NEXT(fpxx, fp64_fpxx)
    NEXT_REQ_FR1(fp64, fp64_fpxx)
    NEXT(any, fp64_fpxx)
    END_STATE

    START_STATE(fp64_fpxxo)
    NEXT_NO_MODE_CHANGE(fp64a, fp64a_fp64_fpxxo)
    NEXT_NO_MODE_CHANGE(fpxxo, fp64_fpxxo)
    NEXT_NO_MODE_CHANGE(fpxx, fp64_fpxx_fpxxo)
    NEXT_NO_MODE_CHANGE(fp64, fp64_fpxxo)
    NEXT_NO_MODE_CHANGE(any, fp64_fpxxo)
    END_STATE

    START_STATE(fp64_fpxx_fpxxo)
    NEXT_NO_MODE_CHANGE(fp64a, fp64a_fp64_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(fpxxo, fp64_fpxx_fpxxo)
    NEXT_NO_MODE_CHANGE(fpxx, fp64_fpxx_fpxxo)
    NEXT_NO_MODE_CHANGE(fp64, fp64_fpxx_fpxxo)
    NEXT_NO_MODE_CHANGE(any, fp64_fpxx_fpxxo)
    END_STATE

    START_STATE(fp64a_fp64)
    NEXT_REQ_FR1(fp64a, fp64a_fp64)
    NEXT(fpxxo, fp64a_fp64_fpxxo)
    NEXT(fpxx, fp64a_fp64_fpxx)
    NEXT_REQ_FR1(fp64, fp64a_fp64)
    NEXT(any, fp64a_fp64)
    END_STATE

    START_STATE(fp64a_fp64_fpxx)
    NEXT_REQ_FR1(fp64a, fp64a_fp64_fpxx)
    NEXT(fpxxo, fp64a_fp64_fpxxo_fpxx)
    NEXT(fpxx, fp64a_fp64_fpxx)
    NEXT_REQ_FR1(fp64, fp64a_fp64_fpxx)
    NEXT(any, fp64a_fp64_fpxx)
    END_STATE

    START_STATE(fp64a_fp64_fpxxo)
    NEXT_NO_MODE_CHANGE(fp64a, fp64a_fp64_fpxxo)
    NEXT_NO_MODE_CHANGE(fpxx, fp64a_fp64_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(fpxxo, fp64a_fp64_fpxxo)
    NEXT_NO_MODE_CHANGE(fp64, fp64a_fp64_fpxxo)
    NEXT_NO_MODE_CHANGE(any, fp64a_fp64_fpxxo)
    END_STATE

    START_STATE(fp64a_fp64_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(fp64a, fp64a_fp64_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(fpxx, fp64a_fp64_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(fpxxo, fp64a_fp64_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(fp64, fp64a_fp64_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(any, fp64a_fp64_fpxxo_fpxx)
    END_STATE

    START_STATE(fp32_fp64a_fpxx)
    NEXT_REQ_FRE(fp32, fp32_fp64a_fpxx)
    NEXT_REQ_FRE(fp64a, fp32_fp64a_fpxx)
    NEXT(fpxxo, fp32_fp64a_fpxxo_fpxx)
    NEXT(fpxx, fp32_fp64a_fpxx)
    NEXT(any, fp32_fp64a_fpxx)
    END_STATE

    START_STATE(fp32_fp64a_fpxxo)
    NEXT_NO_MODE_CHANGE(fp32, fp32_fp64a_fpxxo)
    NEXT_NO_MODE_CHANGE(fp64a, fp32_fp64a_fpxxo)
    NEXT_NO_MODE_CHANGE(fpxx, fp32_fp64a_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(fpxxo, fp32_fp64a_fpxxo)
    NEXT_NO_MODE_CHANGE(any, fp32_fp64a_fpxxo)
    END_STATE

    START_STATE(fp32_fp64a_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(fp32, fp32_fp64a_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(fp64a, fp32_fp64a_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(fpxx, fp32_fp64a_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(fpxxo, fp32_fp64a_fpxxo_fpxx)
    NEXT_NO_MODE_CHANGE(any, fp32_fp64a_fpxxo_fpxx)
    END_STATE
    }

  if (obj != o_max)
    fp_obj_count[obj]++;

  return true;
}

/* Run the state machine by removing an object.  */

static bool
remove_object (enum fp_obj obj)
{
  if (obj == o_max)
    return false;

  fp_obj_count[obj]--;

  /* We can't change fp state until all the objects
     of a particular type have been unloaded.  */
  if (fp_obj_count[obj] != 0)
    return false;

  switch (current_fp_state)
    {
    START_STATE(soft)
    NEXT(soft,any)
    END_STATE

    START_STATE(single)
    NEXT(single,any)
    END_STATE

    START_STATE(any)
    NEXT(any,any)
    END_STATE

    START_STATE(fp32)
    NEXT (fp32,any)
    END_STATE

    START_STATE(fpxx)
    NEXT (fpxx,any)
    END_STATE

    START_STATE(fpxxo)
    NEXT (fpxxo,any)
    END_STATE

    START_STATE(fp64a)
    NEXT(fp64a, any)
    END_STATE

    START_STATE(fp64)
    NEXT(fp64, any)
    END_STATE

    START_STATE(fpxxo_fpxx)
    NEXT(fpxx, fpxxo)
    NEXT(fpxxo, fpxx)
    END_STATE

    START_STATE(fp32_fpxx)
    NEXT(fp32, fpxx)
    NEXT(fpxx, fp32)
    END_STATE

    START_STATE(fp32_fpxxo)
    NEXT(fp32, fpxxo)
    NEXT(fpxxo, fp32)
    END_STATE

    START_STATE(fp32_fpxxo_fpxx)
    NEXT(fp32, fpxxo_fpxx)
    NEXT(fpxxo, fp32_fpxx)
    NEXT(fpxx, fp32_fpxxo)
    END_STATE

    START_STATE(fp64a_fp32)
    NEXT(fp32, fp64a)
    NEXT(fp64a, fp32)
    END_STATE

    START_STATE(fp64a_fpxx)
    NEXT(fp64a, fpxx)
    NEXT(fpxx, fp64a)
    END_STATE

    START_STATE(fp64a_fpxxo)
    NEXT(fp64a, fpxxo)
    NEXT(fpxxo, fp64a)
    END_STATE

    START_STATE(fp64a_fpxx_fpxxo)
    NEXT(fp64a, fpxxo_fpxx)
    NEXT(fpxx, fp64a_fpxxo)
    NEXT(fpxxo, fp64a_fpxx)
    END_STATE

    START_STATE(fp64_fpxx)
    NEXT(fpxx, fp64)
    NEXT(fp64, fpxx)
    END_STATE

    START_STATE(fp64_fpxxo)
    NEXT(fpxxo, fp64)
    NEXT(fp64, fpxxo)
    END_STATE

    START_STATE(fp64_fpxx_fpxxo)
    NEXT(fp64, fpxxo_fpxx)
    NEXT(fpxxo, fp64_fpxx)
    NEXT(fpxx, fp64_fpxxo)
    END_STATE

    START_STATE(fp64a_fp64)
    NEXT(fp64a, fp64)
    NEXT(fp64, fp64a)
    END_STATE

    START_STATE(fp64a_fp64_fpxx)
    NEXT(fp64a, fp64_fpxx)
    NEXT(fpxx, fp64a_fp64)
    NEXT(fp64, fp64a_fpxx)
    END_STATE

    START_STATE(fp64a_fp64_fpxxo)
    NEXT(fp64a, fp64_fpxxo)
    NEXT(fpxxo, fp64a_fp64)
    NEXT(fp64, fp64a_fpxxo)
    END_STATE

    START_STATE(fp64a_fp64_fpxxo_fpxx)
    NEXT(fp64a, fp64_fpxx_fpxxo)
    NEXT(fpxx, fp64a_fp64_fpxxo)
    NEXT(fpxxo, fp64a_fp64_fpxx)
    NEXT(fp64, fp64a_fpxx_fpxxo)
    END_STATE

    START_STATE(fp32_fp64a_fpxx)
    NEXT(fp32, fp64a_fpxx)
    NEXT(fp64a, fp32_fpxx)
    NEXT(fpxx, fp64a_fp32)
    END_STATE

    START_STATE(fp32_fp64a_fpxxo)
    NEXT(fp32, fp64a_fpxxo)
    NEXT(fp64a, fp32_fpxxo)
    NEXT(fpxxo, fp64a_fp32)
    END_STATE

    START_STATE(fp32_fp64a_fpxxo_fpxx)
    NEXT(fp32, fp64a_fpxx_fpxxo)
    NEXT(fp64a, fp32_fpxxo_fpxx)
    NEXT(fpxx, fp32_fp64a_fpxxo)
    NEXT(fpxxo, fp32_fp64a_fpxx)
    END_STATE
    }

  return true;
}

static int
mode_transition_valid_p (void)
{
  int prev_fp_mode;

  /* Get the current fp mode.  */
  prev_fp_mode = current_fp_mode;
#if HAVE_PRCTL_FP_MODE
  current_fp_mode = prctl (PR_GET_FP_MODE);

  /* If the prctl call fails assume the core only has FR0 mode support.  */
  if (current_fp_mode == -1)
    current_fp_mode = 0;
#endif

  if (!current_mode_valid_p (current_fp_state))
    return 0;

  /* Check if mode changes are not allowed but a mode change happened.  */
  if (cant_change_mode
      && current_fp_mode != prev_fp_mode)
    return 0;

  return 1;
}

/* Load OBJ and check that it was/was not loaded correctly.  */
bool
load_object (enum fp_obj obj)
{
  bool should_load = set_next_fp_state (obj);

  shared_lib_ptrs[obj] = dlopen (shared_lib_names[obj], RTLD_LAZY);

  /* If we expected an error and the load was successful then fail.  */
  if (!should_load && (shared_lib_ptrs[obj] != 0))
    return false;

  if (should_load && (shared_lib_ptrs[obj] == 0))
    return false;

  if (!mode_transition_valid_p ())
    return false;

  return true;
}

/* Remove an object and check the state remains valid.  */
bool
unload_object (enum fp_obj obj)
{
  if (!shared_lib_ptrs[obj])
    return true;

  remove_object (obj);

  if (dlclose (shared_lib_ptrs[obj]) != 0)
    return false;

  shared_lib_ptrs[obj] = 0;

  if (!mode_transition_valid_p ())
    return false;

  return true;
}

/* Load every permuation of OBJECTS.  */
static bool
test_permutations (enum fp_obj objects[], int count)
{
  int i;

  for (i = 0 ; i < count ; i++)
    {
      if (!load_object (objects[i]))
	return false;

      if (count > 1)
	{
	  enum fp_obj new_objects[count - 1];
	  int j;
	  int k = 0;

	  for (j = 0 ; j < count ; j++)
	    {
	      if (j != i)
		new_objects[k++] = objects[j];
	    }

	  if (!test_permutations (new_objects, count - 1))
	    return false;
	}

      if (!unload_object (objects[i]))
	return false;
    }
  return true;
}

int
do_test (void)
{
#if HAVE_PRCTL_FP_MODE
  /* Determine available hardware support and current mode.  */
  current_fp_mode = prctl (PR_GET_FP_MODE);

  /* If the prctl call fails assume the core only has FR0 mode support.  */
  if (current_fp_mode == -1)
    current_fp_mode = 0;
  else
    {
      if (prctl (PR_SET_FP_MODE, 0) != 0)
	{
	  if (errno == ENOTSUP)
	    is_r6 = true;
	  else
	    {
	      printf ("unexpected error from PR_SET_FP_MODE, 0: %m\n");
	      return 1;
	    }
	}

      if (prctl (PR_SET_FP_MODE, PR_FP_MODE_FR) != 0)
	{
	  if (errno != ENOTSUP)
	    {
	      printf ("unexpected error from PR_SET_FP_MODE, "
		      "PR_FP_MODE_FR: %m\n");
	      return 1;
	    }
	}
      else
	has_fr1 = true;

      if (prctl (PR_SET_FP_MODE, PR_FP_MODE_FR | PR_FP_MODE_FRE) != 0)
	{
	  if (errno != ENOTSUP)
	    {
	      printf ("unexpected error from PR_SET_FP_MODE, "
		      "PR_FP_MODE_FR | PR_FP_MODE_FRE: %m\n");
	      return 1;
	    }
	}
      else
	has_fre = true;

      if (prctl (PR_SET_FP_MODE, current_fp_mode) != 0)
	{
	  printf ("unable to restore initial FP mode: %m\n");
	  return 1;
	}
    }

  if ((is_r6 && !(current_fp_mode & PR_FP_MODE_FR))
      || (!has_fr1 && (current_fp_mode & PR_FP_MODE_FR))
      || (!has_fre && (current_fp_mode & PR_FP_MODE_FRE)))
    {
      puts ("Inconsistency detected between initial FP mode "
	    "and supported FP modes\n");
      return 1;
    }
#else
  current_fp_mode = 0;
#endif

  /* Set up the initial state from executable and LDSO.  Assumptions:
     1) All system libraries have the same ABI as ld.so.
     2) Due to the fact that ld.so is tested by invoking it directly
        rather than via an interpreter, there is no point in varying
	the ABI of the test program.  Instead the ABI only varies for
	the shared libraries which get loaded.  */
  if (!set_next_fp_state (FPABI_NATIVE))
    {
      puts ("Unable to enter initial ABI state\n");
      return 1;
    }

  /* Compare the computed state with the hardware state.  */
  if (!mode_transition_valid_p ())
    return 1;

  /* Run all possible test permutations.  */
  if (!test_permutations (test_objects, FPABI_COUNT))
    {
      puts ("Mode checks failed\n");
      return 1;
    }

  return 0;
}

#define TEST_FUNCTION do_test ()
#include "../../test-skeleton.c"