]>
Commit | Line | Data |
---|---|---|
d5efd131 MF |
1 | .file "fmodl.s" |
2 | ||
3 | ||
4 | // Copyright (c) 2000 - 2004, Intel Corporation | |
5 | // All rights reserved. | |
6 | // | |
d5efd131 MF |
7 | // |
8 | // Redistribution and use in source and binary forms, with or without | |
9 | // modification, are permitted provided that the following conditions are | |
10 | // met: | |
11 | // | |
12 | // * Redistributions of source code must retain the above copyright | |
13 | // notice, this list of conditions and the following disclaimer. | |
14 | // | |
15 | // * Redistributions in binary form must reproduce the above copyright | |
16 | // notice, this list of conditions and the following disclaimer in the | |
17 | // documentation and/or other materials provided with the distribution. | |
18 | // | |
19 | // * The name of Intel Corporation may not be used to endorse or promote | |
20 | // products derived from this software without specific prior written | |
21 | // permission. | |
22 | ||
23 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
24 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
25 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
26 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL OR ITS | |
27 | // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
28 | // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
29 | // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
30 | // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
31 | // OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY OR TORT (INCLUDING | |
32 | // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
33 | // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
34 | // | |
35 | // Intel Corporation is the author of this code, and requests that all | |
36 | // problem reports or change requests be submitted to it directly at | |
37 | // http://www.intel.com/software/products/opensource/libraries/num.htm. | |
38 | // | |
39 | // History | |
40 | //==================================================================== | |
41 | // 02/02/00 Initial version | |
42 | // 03/02/00 New Algorithm | |
43 | // 04/04/00 Unwind support added | |
44 | // 08/15/00 Bundle added after call to __libm_error_support to properly | |
45 | // set [ the previously overwritten ] GR_Parameter_RESULT. | |
46 | // 11/28/00 Set FR_Y to f9 | |
47 | // 03/11/02 Fixed flags for fmodl(qnan, zero) | |
48 | // 05/20/02 Cleaned up namespace and sf0 syntax | |
49 | // 02/10/03 Reordered header:.section,.global,.proc,.align | |
50 | // 04/28/03 Fix: fmod(sNaN, 0) no longer sets errno | |
51 | // 11/23/04 Reformatted routine and improved speed | |
52 | // | |
53 | // API | |
54 | //==================================================================== | |
55 | // long double fmodl(long double, long double); | |
56 | // | |
57 | // Overview of operation | |
58 | //==================================================================== | |
59 | // fmod(a, b)= a-i*b, | |
60 | // where i is an integer such that, if b!= 0, | |
61 | // |i|<|a/b| and |a/b-i|<1 | |
62 | // | |
63 | // Algorithm | |
64 | //==================================================================== | |
65 | // a). if |a|<|b|, return a | |
66 | // b). get quotient and reciprocal overestimates accurate to | |
67 | // 33 bits (q2, y2) | |
68 | // c). if the exponent difference (exponent(a)-exponent(b)) | |
69 | // is less than 32, truncate quotient to integer and | |
70 | // finish in one iteration | |
71 | // d). if exponent(a)-exponent(b)>= 32 (q2>= 2^32) | |
72 | // round quotient estimate to single precision (k= RN(q2)), | |
73 | // calculate partial remainder (a'= a-k*b), | |
74 | // get quotient estimate (a'*y2), and repeat from c). | |
75 | // | |
76 | // Registers used | |
77 | //==================================================================== | |
78 | ||
79 | GR_SMALLBIASEXP = r2 | |
80 | GR_2P32 = r3 | |
81 | GR_SMALLBIASEXP = r20 | |
82 | GR_ROUNDCONST = r21 | |
83 | GR_SIG_B = r22 | |
84 | GR_ARPFS = r23 | |
85 | GR_TMP1 = r24 | |
86 | GR_TMP2 = r25 | |
87 | GR_TMP3 = r26 | |
88 | ||
89 | GR_SAVE_B0 = r33 | |
90 | GR_SAVE_PFS = r34 | |
91 | GR_SAVE_GP = r35 | |
92 | GR_SAVE_SP = r36 | |
93 | ||
94 | GR_Parameter_X = r37 | |
95 | GR_Parameter_Y = r38 | |
96 | GR_Parameter_RESULT = r39 | |
97 | GR_Parameter_TAG = r40 | |
98 | ||
99 | FR_X = f10 | |
100 | FR_Y = f9 | |
101 | FR_RESULT = f8 | |
102 | ||
103 | FR_ABS_A = f6 | |
104 | FR_ABS_B = f7 | |
105 | FR_Y_INV = f10 | |
106 | FR_SMALLBIAS = f11 | |
107 | FR_E0 = f12 | |
108 | FR_Q = f13 | |
109 | FR_E1 = f14 | |
110 | FR_2P32 = f15 | |
111 | FR_TMPX = f32 | |
112 | FR_TMPY = f33 | |
113 | FR_ROUNDCONST = f34 | |
114 | FR_QINT = f35 | |
115 | FR_QRND24 = f36 | |
116 | FR_NORM_B = f37 | |
117 | FR_TMP = f38 | |
118 | FR_TMP2 = f39 | |
119 | FR_DFLAG = f40 | |
120 | FR_Y_INV0 = f41 | |
121 | FR_Y_INV1 = f42 | |
122 | FR_Q0 = f43 | |
123 | FR_Q1 = f44 | |
124 | FR_QINT_Z = f45 | |
125 | FR_QREM = f46 | |
126 | FR_B_SGN_A = f47 | |
127 | ||
128 | .section .text | |
129 | GLOBAL_IEEE754_ENTRY(fmodl) | |
130 | ||
131 | // inputs in f8, f9 | |
132 | // result in f8 | |
133 | ||
134 | { .mfi | |
135 | getf.sig GR_SIG_B = f9 | |
136 | // FR_ABS_A = |a| | |
137 | fmerge.s FR_ABS_A = f0, f8 | |
138 | mov GR_SMALLBIASEXP = 0x0ffdd | |
139 | } | |
140 | { .mfi | |
141 | nop.m 0 | |
142 | // FR_ABS_B = |b| | |
143 | fmerge.s FR_ABS_B = f0, f9 | |
144 | nop.i 0 | |
145 | } | |
146 | ;; | |
147 | ||
148 | { .mfi | |
149 | setf.exp FR_SMALLBIAS = GR_SMALLBIASEXP | |
150 | // (1) y0 | |
151 | frcpa.s1 FR_Y_INV0, p6 = FR_ABS_A, FR_ABS_B | |
152 | nop.i 0 | |
153 | } | |
154 | ;; | |
155 | ||
156 | { .mlx | |
157 | nop.m 0 | |
158 | movl GR_ROUNDCONST = 0x33a00000 | |
159 | } | |
160 | ;; | |
161 | ||
162 | // eliminate special cases | |
163 | { .mmi | |
164 | nop.m 0 | |
165 | nop.m 0 | |
166 | // y pseudo-zero ? | |
167 | cmp.eq p7, p10 = GR_SIG_B, r0 | |
168 | } | |
169 | ;; | |
170 | ||
171 | // set p7 if b +/-NAN, +/-inf, +/-0 | |
172 | { .mfi | |
173 | nop.m 0 | |
174 | (p10) fclass.m p7, p10 = f9, 0xe7 | |
175 | nop.i 0 | |
176 | } | |
177 | ;; | |
178 | ||
179 | { .mfi | |
180 | mov GR_2P32 = 0x1001f | |
181 | // (2) q0 = a*y0 | |
182 | (p6) fma.s1 FR_Q0 = FR_ABS_A, FR_Y_INV0, f0 | |
183 | nop.i 0 | |
184 | } | |
185 | { .mfi | |
186 | nop.m 0 | |
187 | // (3) e0 = 1 - b * y0 | |
188 | (p6) fnma.s1 FR_E0 = FR_ABS_B, FR_Y_INV0, f1 | |
189 | nop.i 0 | |
190 | } | |
191 | ;; | |
192 | ||
193 | // set p9 if a +/-NAN, +/-inf | |
194 | { .mfi | |
195 | nop.m 0 | |
196 | fclass.m.unc p9, p11 = f8, 0xe3 | |
197 | nop.i 0 | |
198 | } | |
199 | // |a| < |b|? Return a, p8=1 | |
200 | { .mfi | |
201 | nop.m 0 | |
202 | (p10) fcmp.lt.unc.s1 p8, p0 = FR_ABS_A, FR_ABS_B | |
203 | nop.i 0 | |
204 | } | |
205 | ;; | |
206 | ||
207 | // set p7 if b +/-NAN, +/-inf, +/-0 | |
208 | { .mfi | |
209 | nop.m 0 | |
210 | // pseudo-NaN ? | |
211 | (p10) fclass.nm p7, p0 = f9, 0xff | |
212 | nop.i 0 | |
213 | } | |
214 | ;; | |
215 | ||
216 | // set p9 if a is +/-NaN, +/-Inf | |
217 | { .mfi | |
218 | nop.m 0 | |
219 | (p11) fclass.nm p9, p0 = f8, 0xff | |
220 | nop.i 0 | |
221 | } | |
222 | { .mfi | |
223 | nop.m 0 | |
224 | // b denormal ? set D flag (if |a|<|b|) | |
225 | (p8) fnma.s0 FR_DFLAG = f9, f1, f9 | |
226 | nop.i 0 | |
227 | } | |
228 | ;; | |
229 | ||
230 | { .mfi | |
231 | // FR_2P32 = 2^32 | |
232 | setf.exp FR_2P32 = GR_2P32 | |
233 | // (4) q1 = q0+e0*q0 | |
234 | (p6) fma.s1 FR_Q1 = FR_E0, FR_Q0, FR_Q0 | |
235 | nop.i 0 | |
236 | } | |
237 | { .mfi | |
238 | nop.m 0 | |
239 | // (5) e1 = e0 * e0 + 2^-34 | |
240 | (p6) fma.s1 FR_E1 = FR_E0, FR_E0, FR_SMALLBIAS | |
241 | nop.i 0 | |
242 | } | |
243 | ;; | |
244 | ||
245 | { .mfi | |
246 | nop.m 0 | |
247 | // normalize a (if |a|<|b|) | |
248 | (p8) fma.s0 f8 = f8, f1, f0 | |
249 | nop.i 0 | |
250 | } | |
251 | { .bbb | |
252 | (p9) br.cond.spnt FMOD_A_NAN_INF | |
253 | (p7) br.cond.spnt FMOD_B_NAN_INF_ZERO | |
254 | // if |a|<|b|, return | |
255 | (p8) br.ret.spnt b0 | |
256 | } | |
257 | ;; | |
258 | ||
259 | ||
260 | { .mfi | |
261 | nop.m 0 | |
262 | // (6) y1 = y0 + e0 * y0 | |
263 | (p6) fma.s1 FR_Y_INV1 = FR_E0, FR_Y_INV0, FR_Y_INV0 | |
264 | nop.i 0 | |
265 | } | |
266 | ;; | |
267 | ||
268 | { .mfi | |
269 | nop.m 0 | |
270 | // a denormal ? set D flag | |
271 | // b denormal ? set D flag | |
272 | fcmp.eq.s0 p12,p0 = FR_ABS_A, FR_ABS_B | |
273 | nop.i 0 | |
274 | } | |
275 | { .mfi | |
276 | // set FR_ROUNDCONST = 1.25*2^{-24} | |
277 | setf.s FR_ROUNDCONST = GR_ROUNDCONST | |
278 | // (7) q2 = q1+e1*q1 | |
279 | (p6) fma.s1 FR_Q = FR_Q1, FR_E1, FR_Q1 | |
280 | nop.i 0 | |
281 | } | |
282 | ;; | |
283 | ||
284 | { .mfi | |
285 | nop.m 0 | |
286 | fmerge.s FR_B_SGN_A = f8, f9 | |
287 | nop.i 0 | |
288 | } | |
289 | { .mfi | |
290 | nop.m 0 | |
291 | // (8) y2 = y1 + e1 * y1 | |
292 | (p6) fma.s1 FR_Y_INV = FR_E1, FR_Y_INV1, FR_Y_INV1 | |
293 | // set p6 = 0, p10 = 0 | |
294 | cmp.ne.and p6, p10 = r0, r0 | |
295 | } | |
296 | ;; | |
297 | ||
298 | // will compute integer quotient bits (24 bits per iteration) | |
299 | .align 32 | |
300 | loop64: | |
301 | { .mfi | |
302 | nop.m 0 | |
303 | // compare q2, 2^32 | |
304 | fcmp.lt.unc.s1 p8, p7 = FR_Q, FR_2P32 | |
305 | nop.i 0 | |
306 | } | |
307 | { .mfi | |
308 | nop.m 0 | |
309 | // will truncate quotient to integer, if exponent<32 (in advance) | |
310 | fcvt.fx.trunc.s1 FR_QINT = FR_Q | |
311 | nop.i 0 | |
312 | } | |
313 | ;; | |
314 | ||
315 | { .mfi | |
316 | nop.m 0 | |
317 | // if exponent>32 round quotient to single precision (perform in advance) | |
318 | fma.s.s1 FR_QRND24 = FR_Q, f1, f0 | |
319 | nop.i 0 | |
320 | } | |
321 | ;; | |
322 | ||
323 | { .mfi | |
324 | nop.m 0 | |
325 | // set FR_ROUNDCONST = sgn(a) | |
326 | (p8) fmerge.s FR_ROUNDCONST = f8, f1 | |
327 | nop.i 0 | |
328 | } | |
329 | { .mfi | |
330 | nop.m 0 | |
331 | // normalize truncated quotient | |
332 | (p8) fcvt.xf FR_QRND24 = FR_QINT | |
333 | nop.i 0 | |
334 | } | |
335 | ;; | |
336 | ||
337 | { .mfi | |
338 | nop.m 0 | |
339 | // calculate remainder (assuming FR_QRND24 = RZ(Q)) | |
340 | (p7) fnma.s1 FR_E1 = FR_QRND24, FR_ABS_B, FR_ABS_A | |
341 | nop.i 0 | |
342 | } | |
343 | { .mfi | |
344 | nop.m 0 | |
345 | // also if exponent>32, round quotient to single precision | |
346 | // and subtract 1 ulp: q = q-q*(1.25*2^{-24}) | |
347 | (p7) fnma.s.s1 FR_QINT_Z = FR_QRND24, FR_ROUNDCONST, FR_QRND24 | |
348 | nop.i 0 | |
349 | } | |
350 | ;; | |
351 | ||
352 | { .mfi | |
353 | nop.m 0 | |
354 | // (p8) calculate remainder (82-bit format) | |
355 | (p8) fnma.s1 FR_QREM = FR_QRND24, FR_ABS_B, FR_ABS_A | |
356 | nop.i 0 | |
357 | } | |
358 | { .mfi | |
359 | nop.m 0 | |
360 | // (p7) calculate remainder (assuming FR_QINT_Z = RZ(Q)) | |
361 | (p7) fnma.s1 FR_ABS_A = FR_QINT_Z, FR_ABS_B, FR_ABS_A | |
362 | nop.i 0 | |
363 | } | |
364 | ;; | |
365 | ||
366 | { .mfi | |
367 | nop.m 0 | |
0347518d | 368 | // Final iteration (p8): is FR_ABS_A the correct remainder |
d5efd131 MF |
369 | // (quotient was not overestimated) ? |
370 | (p8) fcmp.lt.unc.s1 p6, p10 = FR_QREM, f0 | |
371 | nop.i 0 | |
372 | } | |
373 | ;; | |
374 | ||
375 | { .mfi | |
376 | nop.m 0 | |
377 | // get new quotient estimation: a'*y2 | |
378 | (p7) fma.s1 FR_Q = FR_E1, FR_Y_INV, f0 | |
379 | nop.i 0 | |
380 | } | |
381 | { .mfb | |
382 | nop.m 0 | |
383 | // was FR_Q = RZ(Q) ? (then new remainder FR_E1> = 0) | |
384 | (p7) fcmp.lt.unc.s1 p7, p9 = FR_E1, f0 | |
385 | nop.b 0 | |
386 | } | |
387 | ;; | |
388 | ||
389 | .pred.rel "mutex", p6, p10 | |
390 | { .mfb | |
391 | nop.m 0 | |
392 | // add b to estimated remainder (to cover the case when the quotient was | |
393 | // overestimated) | |
0347518d | 394 | // also set correct sign by using |
d5efd131 MF |
395 | // FR_B_SGN_A = |b|*sgn(a), FR_ROUNDCONST = sgn(a) |
396 | (p6) fma.s0 f8 = FR_QREM, FR_ROUNDCONST, FR_B_SGN_A | |
397 | nop.b 0 | |
398 | } | |
399 | { .mfb | |
400 | nop.m 0 | |
401 | // set correct sign of result before returning: FR_ROUNDCONST = sgn(a) | |
402 | (p10) fma.s0 f8 = FR_QREM, FR_ROUNDCONST, f0 | |
403 | (p8) br.ret.sptk b0 | |
404 | } | |
405 | ;; | |
406 | ||
407 | { .mfi | |
408 | nop.m 0 | |
409 | // if f13! = RZ(Q), get alternative quotient estimation: a''*y2 | |
410 | (p7) fma.s1 FR_Q = FR_ABS_A, FR_Y_INV, f0 | |
411 | nop.i 0 | |
412 | } | |
413 | { .mfb | |
414 | nop.m 0 | |
415 | // if FR_E1 was RZ(Q), set remainder to FR_E1 | |
416 | (p9) fma.s1 FR_ABS_A = FR_E1, f1, f0 | |
417 | br.cond.sptk loop64 | |
418 | } | |
419 | ;; | |
420 | ||
421 | FMOD_A_NAN_INF: | |
422 | ||
423 | // b zero ? | |
424 | { .mfi | |
425 | nop.m 0 | |
426 | fclass.m p10, p0 = f8, 0xc3 // Test a = nan | |
427 | nop.i 0 | |
428 | } | |
429 | { .mfi | |
430 | nop.m 0 | |
431 | fma.s1 FR_NORM_B = f9, f1, f0 | |
432 | nop.i 0 | |
433 | } | |
434 | ;; | |
435 | ||
436 | { .mfi | |
437 | nop.m 0 | |
438 | fma.s0 f8 = f8, f1, f0 | |
439 | nop.i 0 | |
440 | } | |
441 | { .mfi | |
442 | nop.m 0 | |
443 | (p10) fclass.m p10, p0 = f9, 0x07 // Test x = nan, and y = zero | |
444 | nop.i 0 | |
445 | } | |
446 | ;; | |
447 | ||
448 | { .mfb | |
449 | nop.m 0 | |
450 | fcmp.eq.unc.s1 p11, p0 = FR_NORM_B, f0 | |
451 | (p10) br.ret.spnt b0 // Exit with result = a if a = nan and b = zero | |
452 | } | |
453 | ;; | |
454 | ||
455 | { .mib | |
456 | nop.m 0 | |
457 | nop.i 0 | |
458 | // if Y zero | |
459 | (p11) br.cond.spnt FMOD_B_ZERO | |
460 | } | |
461 | ;; | |
462 | ||
463 | // a= infinity? Return QNAN indefinite | |
464 | { .mfi | |
465 | // set p7 t0 0 | |
466 | cmp.ne p7, p0 = r0, r0 | |
467 | fclass.m.unc p8, p9 = f8, 0x23 | |
468 | nop.i 0 | |
469 | } | |
470 | ;; | |
471 | ||
472 | // b NaN ? | |
473 | { .mfi | |
474 | nop.m 0 | |
475 | (p8) fclass.m p9, p8 = f9, 0xc3 | |
476 | nop.i 0 | |
477 | } | |
478 | ;; | |
479 | ||
480 | // b not pseudo-zero ? (GR_SIG_B holds significand) | |
481 | { .mii | |
482 | nop.m 0 | |
483 | (p8) cmp.ne p7, p0 = GR_SIG_B, r0 | |
484 | nop.i 0 | |
485 | } | |
486 | ;; | |
487 | ||
488 | { .mfi | |
489 | nop.m 0 | |
490 | (p8) frcpa.s0 f8, p0 = f8, f8 | |
491 | nop.i 0 | |
492 | } | |
493 | { .mfi | |
494 | nop.m 0 | |
495 | // also set Denormal flag if necessary | |
496 | (p7) fnma.s0 f9 = f9, f1, f9 | |
497 | nop.i 0 | |
498 | } | |
499 | ;; | |
500 | ||
501 | { .mfb | |
502 | nop.m 0 | |
503 | (p8) fma.s0 f8 = f8, f1, f0 | |
504 | nop.b 0 | |
505 | } | |
506 | ;; | |
507 | ||
508 | { .mfb | |
509 | nop.m 0 | |
510 | (p9) frcpa.s0 f8, p7 = f8, f9 | |
511 | br.ret.sptk b0 | |
512 | } | |
513 | ;; | |
514 | ||
515 | FMOD_B_NAN_INF_ZERO: | |
516 | // b INF | |
517 | { .mfi | |
518 | nop.m 0 | |
519 | fclass.m.unc p7, p0 = f9, 0x23 | |
520 | nop.i 0 | |
521 | } | |
522 | ;; | |
523 | ||
524 | { .mfb | |
525 | nop.m 0 | |
526 | (p7) fma.s0 f8 = f8, f1, f0 | |
527 | (p7) br.ret.spnt b0 | |
528 | } | |
529 | ;; | |
530 | ||
531 | // b NAN? | |
532 | { .mfi | |
533 | nop.m 0 | |
534 | fclass.m.unc p9, p10 = f9, 0xc3 | |
535 | nop.i 0 | |
536 | } | |
537 | ;; | |
538 | ||
539 | { .mfi | |
540 | nop.m 0 | |
541 | (p10) fclass.nm p9, p0 = f9, 0xff | |
542 | nop.i 0 | |
543 | } | |
544 | ;; | |
545 | ||
546 | { .mfb | |
547 | nop.m 0 | |
548 | (p9) fma.s0 f8 = f9, f1, f0 | |
549 | (p9) br.ret.spnt b0 | |
550 | } | |
551 | ;; | |
552 | ||
553 | FMOD_B_ZERO: | |
554 | // Y zero? Must be zero at this point | |
555 | // because it is the only choice left. | |
556 | // Return QNAN indefinite | |
557 | ||
558 | { .mfi | |
559 | nop.m 0 | |
560 | // set Invalid | |
561 | frcpa.s0 FR_TMP, p0 = f0, f0 | |
562 | nop.i 0 | |
563 | } | |
564 | ;; | |
565 | ||
566 | // a NAN? | |
567 | { .mfi | |
568 | nop.m 0 | |
569 | fclass.m.unc p9, p10 = f8, 0xc3 | |
570 | nop.i 0 | |
571 | } | |
572 | ;; | |
573 | ||
574 | { .mfi | |
575 | alloc GR_ARPFS = ar.pfs, 1, 4, 4, 0 | |
576 | (p10) fclass.nm p9, p10 = f8, 0xff | |
577 | nop.i 0 | |
578 | } | |
579 | ;; | |
580 | ||
581 | { .mfi | |
582 | nop.m 0 | |
583 | (p9) frcpa.s0 FR_TMP2, p7 = f8, f0 | |
584 | nop.i 0 | |
585 | } | |
586 | ;; | |
587 | ||
588 | { .mfi | |
589 | nop.m 0 | |
590 | (p10) frcpa.s0 FR_TMP2, p7 = f9, f9 | |
591 | mov GR_Parameter_TAG = 120 | |
592 | } | |
593 | ;; | |
594 | ||
595 | { .mfi | |
596 | nop.m 0 | |
597 | fmerge.s FR_X = f8, f8 | |
598 | nop.i 0 | |
599 | } | |
600 | { .mfb | |
601 | nop.m 0 | |
602 | fma.s0 f8 = FR_TMP2, f1, f0 | |
603 | br.sptk __libm_error_region | |
604 | } | |
605 | ;; | |
606 | ||
607 | GLOBAL_IEEE754_END(fmodl) | |
3a327316 | 608 | libm_alias_ldouble_other (__fmod, fmod) |
d5efd131 MF |
609 | |
610 | LOCAL_LIBM_ENTRY(__libm_error_region) | |
611 | .prologue | |
612 | { .mfi | |
613 | add GR_Parameter_Y = -32, sp // Parameter 2 value | |
614 | nop.f 0 | |
615 | .save ar.pfs, GR_SAVE_PFS | |
616 | mov GR_SAVE_PFS = ar.pfs // Save ar.pfs | |
617 | } | |
618 | { .mfi | |
619 | .fframe 64 | |
620 | add sp = -64, sp // Create new stack | |
621 | nop.f 0 | |
622 | mov GR_SAVE_GP = gp // Save gp | |
623 | } | |
624 | ;; | |
625 | ||
626 | { .mmi | |
627 | stfe [ GR_Parameter_Y ] = FR_Y, 16 // Save Parameter 2 on stack | |
628 | add GR_Parameter_X = 16, sp // Parameter 1 address | |
629 | .save b0, GR_SAVE_B0 | |
630 | mov GR_SAVE_B0 = b0 // Save b0 | |
631 | } | |
632 | ;; | |
633 | ||
634 | .body | |
635 | { .mib | |
636 | stfe [ GR_Parameter_X ] = FR_X // Store Parameter 1 on stack | |
637 | add GR_Parameter_RESULT = 0, GR_Parameter_Y | |
638 | nop.b 0 // Parameter 3 address | |
639 | } | |
640 | { .mib | |
641 | stfe [ GR_Parameter_Y ] = FR_RESULT // Store Parameter 3 on stack | |
642 | add GR_Parameter_Y = -16, GR_Parameter_Y | |
643 | br.call.sptk b0 = __libm_error_support# // Call error handling function | |
644 | } | |
645 | ;; | |
646 | ||
647 | { .mmi | |
648 | nop.m 0 | |
649 | nop.m 0 | |
650 | add GR_Parameter_RESULT = 48, sp | |
651 | } | |
652 | ;; | |
653 | ||
654 | { .mmi | |
655 | ldfe f8 = [ GR_Parameter_RESULT ] // Get return result off stack | |
656 | .restore sp | |
657 | add sp = 64, sp // Restore stack pointer | |
658 | mov b0 = GR_SAVE_B0 // Restore return address | |
659 | } | |
660 | ;; | |
661 | ||
662 | { .mib | |
663 | mov gp = GR_SAVE_GP // Restore gp | |
664 | mov ar.pfs = GR_SAVE_PFS // Restore ar.pfs | |
665 | br.ret.sptk b0 // Return | |
666 | } | |
667 | ;; | |
668 | ||
669 | LOCAL_LIBM_END(__libm_error_region) | |
670 | ||
671 | .type __libm_error_support#, @function | |
672 | .global __libm_error_support# |