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
|
.file "asinl.s"
// Copyright (C) 2000, 2001, Intel Corporation
// All rights reserved.
//
// Contributed 2/2/2000 by John Harrison, Ted Kubaska, Bob Norin, Shane Story,
// and Ping Tak Peter Tang of the Computational Software Lab, Intel Corporation.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// * The name of Intel Corporation may not be used to endorse or promote
// products derived from this software without specific prior written
// permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL OR ITS
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Intel Corporation is the author of this code, and requests that all
// problem reports or change requests be submitted to it directly at
// http://developer.intel.com/opensource.
//
// History
//==============================================================
// 2/02/00 Initial version
// 4/04/00 Unwind support added
// 8/15/00 Bundle added after call to __libm_error_support to properly
// set [the previously overwritten] GR_Parameter_RESULT.
//
// API
//==============================================================
// long double = asinl(long double)
// input floating point f8
// output floating point f8
//
// Registers used
//==============================================================
//
// predicate registers used:
// p6 -> p12
//
// floating-point registers used:
// f8 has input, then output
// f32 -> f87, f8 -> f13, f32 -> f87
//
// general registers used:
// r32 -> r47
//
// Overview of operation
//==============================================================
// There are three paths
// 1. |x| < 2^-40 ASIN_TINY
// 2. 2^-40 <= |x| < 1/4 ASIN_POLY
// 3. 1/4 <= |x| < 1 ASIN_ATAN
#include "libm_support.h"
// Assembly macros
//==============================================================
FR_RESULT = f10
FR_X = f8
FR_Y = f1
asin_P79 = f32
asin_P59 = f33
asin_P39 = f34
asin_P19 = f35
asin_P810 = f36
asin_P610 = f37
asin_P410 = f38
asin_P210 = f39
asin_A1 = f41
asin_A2 = f42
asin_A3 = f43
asin_A4 = f44
asin_A5 = f45
asin_A6 = f46
asin_A7 = f47
asin_A8 = f48
asin_A9 = f49
asin_A10 = f50
asin_X2 = f51
asin_X4 = f52
asin_B = f53
asin_Bb = f54
asin_C = f55
asin_Cc = f56
asin_D = f57
asin_W = f58
asin_Ww = f59
asin_y0 = f60
asin_y1 = f61
asin_y2 = f62
asin_H = f63
asin_Hh = f64
asin_t1 = f65
asin_t2 = f66
asin_t3 = f67
asin_t4 = f68
asin_t5 = f69
asin_Pseries = f70
asin_NORM_f8 = f71
asin_ABS_NORM_f8 = f72
asin_2m100 = f73
asin_P1P2 = f74
asin_HALF = f75
asin_1mD = f76
asin_1mB = f77
asin_1mBmC = f78
asin_S = f79
asin_BmWW = f80
asin_BmWWpb = f81
asin_2W = f82
asin_1d2W = f83
asin_Dd = f84
asin_XWw = f85
asin_low = f86
asin_pi_by_2 = f87
asin_pi_by_2_lo = f88
asin_GR_17_ones = r33
asin_GR_16_ones = r34
asin_GR_signexp_f8 = r35
asin_GR_exp = r36
asin_GR_true_exp = r37
asin_GR_ff9b = r38
GR_SAVE_B0 = r39
GR_SAVE_SP = r40
GR_SAVE_PFS = r33
// r33 can be used safely.
// r40 is address of table of coefficients
// Later it is used to save sp across calls
GR_SAVE_GP = r41
asin_GR_fffe = r42
asin_GR_retval = r43
GR_Parameter_X = r44
GR_Parameter_Y = r45
GR_Parameter_RESULT = r46
GR_Parameter_TAG = r47
// 2^-40:
// A true exponent of -40 is
// : -40 + register_bias
// : -28 + ffff = ffd7
// A true exponent of -100 is
// : -100 + register_bias
// : -64 + ffff = ff9b
// Data tables
//==============================================================
#ifdef _LIBC
.rodata
#else
.data
#endif
.align 16
asin_coefficients:
ASM_TYPE_DIRECTIVE(asin_coefficients,@object)
data8 0xBB08911F2013961E, 0x00003FF8 // A10
data8 0x981F1095A23A87D3, 0x00003FF8 // A9
data8 0xBDF09C6C4177BCC6, 0x00003FF8 // A8
data8 0xE4C3A60B049ACCEA, 0x00003FF8 // A7
data8 0x8E2789F4E8A8F1AD, 0x00003FF9 // A6
data8 0xB745D09B2B0E850B, 0x00003FF9 // A5
data8 0xF8E38E3BC4C50920, 0x00003FF9 // A4
data8 0xB6DB6DB6D89FCD81, 0x00003FFA // A3
data8 0x99999999999AF376, 0x00003FFB // A2
data8 0xAAAAAAAAAAAAAA71, 0x00003FFC // A1
data8 0xc90fdaa22168c234, 0x00003FFF // pi_by_2_hi
data8 0xc4c6628b80dc1cd1, 0x00003FBF // pi_by_2_lo
ASM_SIZE_DIRECTIVE(asin_coefficients)
.align 32
.global asinl#
.section .text
.proc asinl#
.align 32
asinl:
{ .mfi
alloc r32 = ar.pfs,1,11,4,0
(p0) fnorm asin_NORM_f8 = f8
(p0) mov asin_GR_17_ones = 0x1ffff
}
{ .mii
(p0) mov asin_GR_16_ones = 0xffff
(p0) mov asin_GR_ff9b = 0xff9b ;;
nop.i 999
}
{ .mmi
(p0) setf.exp asin_2m100 = asin_GR_ff9b
(p0) addl r40 = @ltoff(asin_coefficients), gp
nop.i 999
}
;;
{ .mmi
ld8 r40 = [r40]
nop.m 999
nop.i 999
}
;;
// Load the constants
{ .mmi
(p0) ldfe asin_A10 = [r40],16 ;;
(p0) ldfe asin_A9 = [r40],16
nop.i 999 ;;
}
{ .mmi
(p0) ldfe asin_A8 = [r40],16 ;;
(p0) ldfe asin_A7 = [r40],16
nop.i 999 ;;
}
{ .mmi
(p0) ldfe asin_A6 = [r40],16 ;;
(p0) getf.exp asin_GR_signexp_f8 = asin_NORM_f8
nop.i 999
}
{ .mmi
(p0) ldfe asin_A5 = [r40],16 ;;
(p0) ldfe asin_A4 = [r40],16
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p0) fmerge.s asin_ABS_NORM_f8 = f0, asin_NORM_f8
(p0) and asin_GR_exp = asin_GR_signexp_f8, asin_GR_17_ones ;;
}
// case 1: |x| < 2^-40 ==> p6 (includes x = +-0)
// case 2: 2^-40 <= |x| < 2^-2 ==> p8
// case 3: 2^-2 <= |x| < 1 ==> p9
// case 4: 1 <= |x| ==> p11
// In case 4, we pick up the special case x = +-1 and return +-pi/2
{ .mii
(p0) ldfe asin_A3 = [r40],16
(p0) sub asin_GR_true_exp = asin_GR_exp, asin_GR_16_ones ;;
(p0) cmp.ge.unc p6, p7 = -41, asin_GR_true_exp ;;
}
{ .mii
(p0) ldfe asin_A2 = [r40],16
(p7) cmp.ge.unc p8, p9 = -3, asin_GR_true_exp ;;
(p9) cmp.ge.unc p10, p11 = -1, asin_GR_true_exp
}
{ .mmi
(p0) ldfe asin_A1 = [r40],16 ;;
(p0) ldfe asin_pi_by_2 = [r40],16
nop.i 999
}
// case 4: |x| >= 1
{ .mib
nop.m 999
nop.i 999
(p11) br.spnt L(ASIN_ERROR_RETURN) ;;
}
// case 1: |x| < 2^-40
{ .mfb
nop.m 999
(p6) fma.s0 f8 = asin_2m100,f8,f8
(p6) br.ret.spnt b0 ;;
}
// case 2: 2^-40 <= |x| < 2^-2 ==> p8
{ .mfi
nop.m 999
(p8) fma.s1 asin_X2 = f8,f8, f0
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p8) fma.s1 asin_X4 = asin_X2,asin_X2, f0
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p8) fma.s1 asin_P810 = asin_X4, asin_A10, asin_A8
nop.i 999
}
{ .mfi
nop.m 999
(p8) fma.s1 asin_P79 = asin_X4, asin_A9, asin_A7
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p8) fma.s1 asin_P610 = asin_X4, asin_P810, asin_A6
nop.i 999
}
{ .mfi
nop.m 999
(p8) fma.s1 asin_P59 = asin_X4, asin_P79, asin_A5
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p8) fma.s1 asin_P410 = asin_X4, asin_P610, asin_A4
nop.i 999
}
{ .mfi
nop.m 999
(p8) fma.s1 asin_P39 = asin_X4, asin_P59, asin_A3
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p8) fma.s1 asin_P210 = asin_X4, asin_P410, asin_A2
nop.i 999
}
{ .mfi
nop.m 999
(p8) fma.s1 asin_P19 = asin_X4, asin_P39, asin_A1
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p8) fma.s1 asin_P1P2 = asin_X2, asin_P210, asin_P19
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p8) fma.s1 asin_P1P2 = asin_X2, asin_P1P2, f0
nop.i 999 ;;
}
{ .mfb
nop.m 999
(p8) fma.s0 f8 = asin_NORM_f8, asin_P1P2, asin_NORM_f8
(p8) br.ret.spnt b0 ;;
}
// case 3: 2^-2 <= |x| < 1
// 1- X*X is computed as B + b
// Step 1.1: Get B and b
// atan2 will return
// f8 = Z_hi
// f10 = Z_lo
// f11 = s_lo
{ .mfi
(p0) mov asin_GR_fffe = 0xfffe
(p0) fmerge.se f8 = asin_ABS_NORM_f8, asin_ABS_NORM_f8
nop.i 0
};;
{ .mmf
nop.m 0
(p0) setf.exp asin_HALF = asin_GR_fffe
(p0) fmerge.se f12 = asin_NORM_f8, asin_NORM_f8 ;;
}
{ .mfi
nop.m 999
(p0) fcmp.lt.unc.s1 p6,p7 = asin_ABS_NORM_f8, asin_HALF
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p7) fma.s1 asin_D = f1,f1,asin_ABS_NORM_f8
nop.i 999
}
{ .mfi
nop.m 999
(p7) fms.s1 asin_C = f1,f1,asin_ABS_NORM_f8
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p7) fma.s1 asin_B = asin_C, asin_D, f0
nop.i 999
}
{ .mfi
nop.m 999
(p7) fms.s1 asin_1mD = f1,f1,asin_D
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p7) fma.s1 asin_Dd = asin_1mD,f1, asin_ABS_NORM_f8
nop.i 999
}
{ .mfi
nop.m 999
(p7) fms.s1 asin_Bb = asin_C, asin_D, asin_B
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p7) fma.s1 asin_Bb = asin_C, asin_Dd, asin_Bb
nop.i 999
}
{ .mfi
nop.m 999
(p6) fma.s1 asin_C = asin_ABS_NORM_f8, asin_ABS_NORM_f8, f0
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p6) fms.s1 asin_B = f1, f1, asin_C
nop.i 999
}
{ .mfi
nop.m 999
(p6) fms.s1 asin_Cc = asin_ABS_NORM_f8, asin_ABS_NORM_f8, asin_C
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p0) fma.s1 asin_Hh = asin_HALF, asin_B, f0
nop.i 999
}
{ .mfi
nop.m 999
(p6) fms.s1 asin_1mB = f1, f1, asin_B
nop.i 999 ;;
}
// Step 1.2:
// sqrt(B + b) is computed as W + w
// Get W
{ .mfi
nop.m 999
(p0) frsqrta.s1 asin_y0,p8 = asin_B
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p6) fms.s1 asin_1mBmC = asin_1mB, f1, asin_C
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p0) fma.s1 asin_t1 = asin_y0, asin_y0, f0
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p6) fms.s1 asin_Bb = asin_1mBmC, f1, asin_Cc
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p0) fnma.s1 asin_t2 = asin_t1, asin_Hh, asin_HALF
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p0) fma.s1 asin_y1 = asin_t2, asin_y0, asin_y0
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p0) fma.s1 asin_t3 = asin_y1, asin_Hh, f0
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p0) fnma.s1 asin_t4 = asin_t3, asin_y1, asin_HALF
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p0) fma.s1 asin_y2 = asin_t4, asin_y1, asin_y1
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p0) fma.s1 asin_S = asin_B, asin_y2, f0
nop.i 999
}
{ .mfi
nop.m 999
(p0) fma.s1 asin_H = asin_y2, asin_HALF, f0
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p0) fma.s1 asin_t5 = asin_Hh, asin_y2, f0
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p0) fnma.s1 asin_Dd = asin_S, asin_S, asin_B
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p0) fma.s1 asin_W = asin_Dd, asin_H, asin_S
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p0) fma.s1 asin_2W = asin_W, f1, asin_W
nop.i 999
}
// Step 1.3
// Get w
{ .mfi
nop.m 999
(p0) fnma.s1 asin_BmWW = asin_W, asin_W, asin_B
nop.i 999 ;;
}
// Step 2
// asin(x) = atan2(X,sqrt(1-X*X))
// = atan2(X, W) -Xw
// corr = Xw
// asin(x) = Z_hi + (s_lo*Z_lo - corr)
// Call atan2(X, W)
// Save W in f9
// Save X in f12
// Save w in f13
{ .mfi
nop.m 999
(p0) fmerge.se f9 = asin_W, asin_W
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p0) fma.s1 asin_BmWWpb = asin_BmWW, f1, asin_Bb
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p0) frcpa.s1 asin_1d2W,p9 = f1, asin_2W
nop.i 999 ;;
}
{ .mfi
nop.m 999
(p0) fma.s1 asin_Ww = asin_BmWWpb, asin_1d2W, f0
nop.i 999 ;;
}
.endp asinl
ASM_SIZE_DIRECTIVE(asinl)
.proc __libm_callout
__libm_callout:
.prologue
{ .mfi
nop.m 0
nop.f 0
.save ar.pfs,GR_SAVE_PFS
mov GR_SAVE_PFS=ar.pfs // Save ar.pfs
};;
{ .mfi
mov GR_SAVE_GP=gp // Save gp
nop.f 0
.save b0, GR_SAVE_B0
mov GR_SAVE_B0=b0 // Save b0
}
.body
{.mfb
nop.m 0
(p0) fmerge.se f13 = asin_Ww, asin_Ww
(p0) br.call.sptk.many b0=__libm_atan2_reg#
};;
{ .mfi
mov gp = GR_SAVE_GP // Restore gp
(p0) fma.s1 asin_XWw = asin_ABS_NORM_f8,f13,f0
mov b0 = GR_SAVE_B0 // Restore return address
};;
// asin_XWw = Xw = corr
// asin_low = (s_lo * Z_lo - corr)
// f8 = Z_hi + (s_lo * Z_lo - corr)
{ .mfi
nop.m 999
(p0) fms.s1 asin_low = f11, f10, asin_XWw
mov ar.pfs = GR_SAVE_PFS // Restore ar.pfs
};;
{ .mfi
nop.m 999
(p0) fma.s0 f8 = f8, f1, asin_low
nop.i 999 ;;
}
{ .mfb
nop.m 999
(p0) fmerge.s f8 = f12,f8
(p0) br.ret.sptk b0 ;;
}
.endp __libm_callout
ASM_SIZE_DIRECTIVE(__libm_callout)
.proc SPECIAL
SPECIAL:
L(ASIN_ERROR_RETURN):
// If X is 1, return (sign of X)pi/2
{ .mfi
nop.m 999
(p0) fcmp.eq.unc p6,p7 = asin_ABS_NORM_f8,f1
nop.i 999 ;;
}
{ .mfb
(p6) ldfe asin_pi_by_2_lo = [r40]
(p6) fmerge.s asin_pi_by_2 = f8,asin_pi_by_2
nop.b 0;;
}
// If X is a NAN, leave
// qnan snan inf norm unorm 0 -+
// 1 1 0 0 0 0 11
{ .mfb
nop.m 999
(p6) fma.s0 f8 = f8,asin_pi_by_2_lo,asin_pi_by_2
(p6) br.ret.spnt b0
}
{ .mfi
nop.m 999
(p0) fclass.m.unc p12,p0 = f8, 0xc3
nop.i 999 ;;
}
{ .mfb
nop.m 999
(p12) fma.s0 f8 = f8,f1,f0
(p12) br.ret.spnt b0 ;;
}
{ .mfi
(p0) mov GR_Parameter_TAG = 60
(p0) frcpa f10, p6 = f0, f0
nop.i 0
};;
.endp SPECIAL
ASM_SIZE_DIRECTIVE(SPECIAL)
.proc __libm_error_region
__libm_error_region:
.prologue
{ .mfi
add GR_Parameter_Y=-32,sp // Parameter 2 value
nop.f 0
.save ar.pfs,GR_SAVE_PFS
mov GR_SAVE_PFS=ar.pfs // Save ar.pfs
}
{ .mfi
.fframe 64
add sp=-64,sp // Create new stack
nop.f 0
mov GR_SAVE_GP=gp // Save gp
};;
{ .mmi
stfe [GR_Parameter_Y] = FR_Y,16 // Store Parameter 2 on stack
add GR_Parameter_X = 16,sp // Parameter 1 address
.save b0, GR_SAVE_B0
mov GR_SAVE_B0=b0 // Save b0
};;
.body
{ .mib
stfe [GR_Parameter_X] = FR_X // Store Parameter 1 on stack
add GR_Parameter_RESULT = 0,GR_Parameter_Y
nop.b 0 // Parameter 3 address
}
{ .mib
stfe [GR_Parameter_Y] = FR_RESULT // Store Parameter 3 on stack
add GR_Parameter_Y = -16,GR_Parameter_Y
br.call.sptk b0=__libm_error_support# // Call error handling function
};;
{ .mmi
nop.m 0
nop.m 0
add GR_Parameter_RESULT = 48,sp
};;
{ .mmi
ldfe f8 = [GR_Parameter_RESULT] // Get return result off stack
.restore sp
add sp = 64,sp // Restore stack pointer
mov b0 = GR_SAVE_B0 // Restore return address
};;
{ .mib
mov gp = GR_SAVE_GP // Restore gp
mov ar.pfs = GR_SAVE_PFS // Restore ar.pfs
br.ret.sptk b0 // Return
};;
.endp __libm_error_region
ASM_SIZE_DIRECTIVE(__libm_error_region)
.type __libm_error_support#,@function
.global __libm_error_support#
.type __libm_atan2_reg#,@function
.global __libm_atan2_reg#
|
