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f7a9f785 | 1 | /* Copyright (C) 2014-2016 Free Software Foundation, Inc. |
0bd95672 MF |
2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Lesser General Public | |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Lesser General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Lesser General Public | |
15 | License along with the GNU C Library; if not, see | |
16 | <http://www.gnu.org/licenses/>. */ | |
17 | ||
18 | #include <sys/prctl.h> | |
19 | #include <dlfcn.h> | |
20 | #include <stdio.h> | |
21 | #include <string.h> | |
22 | #include <stdbool.h> | |
23 | #include <errno.h> | |
24 | ||
25 | #if defined PR_GET_FP_MODE && defined PR_SET_FP_MODE | |
26 | # define HAVE_PRCTL_FP_MODE 1 | |
27 | # define FR1_MODE (PR_FP_MODE_FR) | |
28 | # define FRE_MODE (PR_FP_MODE_FR | PR_FP_MODE_FRE) | |
29 | #else | |
30 | # define HAVE_PRCTL_FP_MODE 0 | |
31 | # define FR1_MODE 0x1 | |
32 | # define FRE_MODE 0x2 | |
33 | #endif | |
34 | ||
35 | #define STR_VAL(VAL) #VAL | |
36 | #define N_STR(VAL) STR_VAL(VAL) | |
37 | ||
38 | #define START_STATE(NAME) \ | |
39 | case s_ ## NAME: \ | |
40 | { \ | |
41 | switch (obj) \ | |
42 | { | |
43 | ||
44 | #define END_STATE \ | |
45 | default: \ | |
46 | return false; \ | |
47 | } \ | |
48 | break; \ | |
49 | } | |
50 | ||
51 | #define NEXT(OBJ, NEXT_STATE) \ | |
52 | case o_ ## OBJ: \ | |
53 | current_fp_state = s_ ## NEXT_STATE; \ | |
54 | break; | |
55 | ||
56 | #define NEXT_REQ_FR1(OBJ, NEXT_STATE) \ | |
57 | case o_ ## OBJ: \ | |
58 | { \ | |
59 | if (has_fr1) \ | |
60 | current_fp_state = s_ ## NEXT_STATE; \ | |
61 | else \ | |
62 | return false; \ | |
63 | } \ | |
64 | break; | |
65 | ||
66 | #define NEXT_REQ_FR0(OBJ, NEXT_STATE) \ | |
67 | case o_ ## OBJ: \ | |
68 | { \ | |
69 | if (!is_r6 \ | |
70 | || (is_r6 && has_fr1 && has_fre)) \ | |
71 | current_fp_state = s_ ## NEXT_STATE; \ | |
72 | else \ | |
73 | return false; \ | |
74 | } \ | |
75 | break; | |
76 | ||
77 | #define NEXT_REQ_FRE(OBJ, NEXT_STATE) \ | |
78 | case o_ ## OBJ: \ | |
79 | { \ | |
80 | if (has_fr1 && has_fre) \ | |
81 | current_fp_state = s_ ## NEXT_STATE; \ | |
82 | else \ | |
83 | return false; \ | |
84 | } \ | |
85 | break; | |
86 | ||
87 | #define NEXT_NO_MODE_CHANGE(OBJ, NEXT_STATE) \ | |
88 | case o_ ## OBJ: \ | |
89 | { \ | |
90 | if (current_mode_valid_p (s_ ## NEXT_STATE)) \ | |
91 | { \ | |
92 | current_fp_state = s_ ## NEXT_STATE; \ | |
93 | cant_change_mode = true; \ | |
94 | } \ | |
95 | else \ | |
96 | return false; \ | |
97 | } \ | |
98 | break; | |
99 | ||
100 | static const char * const shared_lib_names[] = | |
101 | { | |
102 | "tst-abi-fpanymod.so", "tst-abi-fpsoftmod.so", "tst-abi-fpsinglemod.so", | |
103 | "tst-abi-fp32mod.so", "tst-abi-fp64mod.so", "tst-abi-fp64amod.so", | |
104 | "tst-abi-fpxxmod.so", "tst-abi-fpxxomod.so" | |
105 | }; | |
106 | ||
107 | struct fp_mode_req | |
108 | { | |
109 | int mode1; | |
110 | int mode2; | |
111 | int mode3; | |
112 | }; | |
113 | ||
114 | enum fp_obj | |
115 | { | |
116 | o_any, | |
117 | o_soft, | |
118 | o_single, | |
119 | o_fp32, | |
120 | o_fp64, | |
121 | o_fp64a, | |
122 | o_fpxx, | |
123 | o_fpxxo, | |
124 | o_max | |
125 | }; | |
126 | ||
127 | enum fp_state | |
128 | { | |
129 | s_any, | |
130 | s_soft, | |
131 | s_single, | |
132 | s_fp32, | |
133 | s_fpxx, | |
134 | s_fpxxo, | |
135 | s_fp64a, | |
136 | s_fp64, | |
137 | s_fpxxo_fpxx, | |
138 | s_fp32_fpxx, | |
139 | s_fp32_fpxxo, | |
140 | s_fp32_fpxxo_fpxx, | |
141 | s_fp32_fp64a_fpxx, | |
142 | s_fp32_fp64a_fpxxo, | |
143 | s_fp32_fp64a_fpxxo_fpxx, | |
144 | s_fp64a_fp32, | |
145 | s_fp64a_fpxx, | |
146 | s_fp64a_fpxxo, | |
147 | s_fp64a_fp64, | |
148 | s_fp64a_fp64_fpxx, | |
149 | s_fp64a_fp64_fpxxo, | |
150 | s_fp64a_fpxx_fpxxo, | |
151 | s_fp64a_fp64_fpxxo_fpxx, | |
152 | s_fp64_fpxx, | |
153 | s_fp64_fpxxo, | |
154 | s_fp64_fpxx_fpxxo | |
155 | }; | |
156 | ||
157 | ||
158 | static int current_fp_mode; | |
159 | static bool cant_change_mode = false; | |
160 | static bool has_fr1 = false; | |
161 | static bool has_fre = false; | |
162 | static bool is_r6 = false; | |
163 | static unsigned int fp_obj_count[o_max]; | |
164 | void * shared_lib_ptrs[o_max]; | |
165 | static enum fp_state current_fp_state = s_any; | |
166 | static enum fp_obj test_objects[FPABI_COUNT] = { FPABI_LIST }; | |
167 | ||
168 | /* This function will return the valid FP modes for the specified state. */ | |
169 | ||
170 | static struct fp_mode_req | |
171 | compute_fp_modes (enum fp_state state) | |
172 | { | |
173 | struct fp_mode_req requirements; | |
174 | ||
175 | requirements.mode1 = -1; | |
176 | requirements.mode2 = -1; | |
177 | requirements.mode3 = -1; | |
178 | ||
179 | switch (state) | |
180 | { | |
181 | case s_single: | |
182 | { | |
183 | if (is_r6) | |
184 | requirements.mode1 = FR1_MODE; | |
185 | else | |
186 | { | |
187 | requirements.mode1 = 0; | |
188 | requirements.mode2 = FR1_MODE; | |
189 | } | |
190 | break; | |
191 | } | |
192 | case s_fp32: | |
193 | case s_fp32_fpxx: | |
194 | case s_fp32_fpxxo: | |
195 | case s_fp32_fpxxo_fpxx: | |
196 | { | |
197 | if (is_r6) | |
198 | requirements.mode1 = FRE_MODE; | |
199 | else | |
200 | { | |
201 | requirements.mode1 = 0; | |
202 | requirements.mode2 = FRE_MODE; | |
203 | } | |
204 | break; | |
205 | } | |
206 | case s_fpxx: | |
207 | case s_fpxxo: | |
208 | case s_fpxxo_fpxx: | |
209 | case s_any: | |
210 | case s_soft: | |
211 | { | |
212 | if (is_r6) | |
213 | { | |
214 | requirements.mode1 = FR1_MODE; | |
215 | requirements.mode2 = FRE_MODE; | |
216 | } | |
217 | else | |
218 | { | |
219 | requirements.mode1 = 0; | |
220 | requirements.mode2 = FR1_MODE; | |
221 | requirements.mode3 = FRE_MODE; | |
222 | } | |
223 | break; | |
224 | } | |
225 | case s_fp64a: | |
226 | case s_fp64a_fpxx: | |
227 | case s_fp64a_fpxxo: | |
228 | case s_fp64a_fpxx_fpxxo: | |
229 | { | |
230 | requirements.mode1 = FR1_MODE; | |
231 | requirements.mode2 = FRE_MODE; | |
232 | break; | |
233 | } | |
234 | case s_fp64: | |
235 | case s_fp64_fpxx: | |
236 | case s_fp64_fpxxo: | |
237 | case s_fp64_fpxx_fpxxo: | |
238 | case s_fp64a_fp64: | |
239 | case s_fp64a_fp64_fpxx: | |
240 | case s_fp64a_fp64_fpxxo: | |
241 | case s_fp64a_fp64_fpxxo_fpxx: | |
242 | { | |
243 | requirements.mode1 = FR1_MODE; | |
244 | break; | |
245 | } | |
246 | case s_fp64a_fp32: | |
247 | case s_fp32_fp64a_fpxx: | |
248 | case s_fp32_fp64a_fpxxo: | |
249 | case s_fp32_fp64a_fpxxo_fpxx: | |
250 | { | |
251 | requirements.mode1 = FRE_MODE; | |
252 | break; | |
253 | } | |
254 | } | |
255 | return requirements; | |
256 | } | |
257 | ||
258 | /* Check the current mode is suitable for the specified state. */ | |
259 | ||
260 | static bool | |
261 | current_mode_valid_p (enum fp_state s) | |
262 | { | |
263 | struct fp_mode_req req = compute_fp_modes (s); | |
264 | return (req.mode1 == current_fp_mode | |
265 | || req.mode2 == current_fp_mode | |
266 | || req.mode3 == current_fp_mode); | |
267 | } | |
268 | ||
269 | /* Run the state machine by adding a new object. */ | |
270 | ||
271 | static bool | |
272 | set_next_fp_state (enum fp_obj obj) | |
273 | { | |
274 | cant_change_mode = false; | |
275 | switch (current_fp_state) | |
276 | { | |
277 | ||
278 | START_STATE(soft) | |
279 | NEXT(soft,soft) | |
280 | NEXT(any,soft) | |
281 | END_STATE | |
282 | ||
283 | START_STATE(single) | |
284 | NEXT(single,single) | |
285 | NEXT(any,single) | |
286 | END_STATE | |
287 | ||
288 | START_STATE(any) | |
289 | NEXT_REQ_FR0(fp32, fp32) | |
290 | NEXT(fpxx, fpxx) | |
291 | NEXT(fpxxo, fpxxo) | |
292 | NEXT_REQ_FR1(fp64a, fp64a) | |
293 | NEXT_REQ_FR1(fp64, fp64) | |
294 | NEXT(any,any) | |
295 | NEXT(soft,soft) | |
296 | NEXT(single,single) | |
297 | END_STATE | |
298 | ||
299 | START_STATE(fp32) | |
300 | NEXT_REQ_FR0(fp32,fp32) | |
301 | NEXT(fpxx, fp32_fpxx) | |
302 | NEXT(fpxxo, fp32_fpxxo) | |
303 | NEXT_REQ_FRE(fp64a, fp64a_fp32) | |
304 | NEXT(any,fp32) | |
305 | END_STATE | |
306 | ||
307 | START_STATE(fpxx) | |
308 | NEXT_REQ_FR0(fp32, fp32_fpxx) | |
309 | NEXT_REQ_FR1(fp64, fp64_fpxx) | |
310 | NEXT_REQ_FR1(fp64a, fp64a_fpxx) | |
311 | NEXT(fpxxo, fpxxo_fpxx) | |
312 | NEXT(fpxx,fpxx) | |
313 | NEXT(any,fpxx) | |
314 | END_STATE | |
315 | ||
316 | START_STATE(fpxxo) | |
317 | NEXT_NO_MODE_CHANGE(fp32, fp32_fpxxo) | |
318 | NEXT_NO_MODE_CHANGE(fp64, fp64_fpxxo) | |
319 | NEXT_NO_MODE_CHANGE(fp64a, fp64a_fpxxo) | |
320 | NEXT_NO_MODE_CHANGE(fpxx, fpxxo_fpxx) | |
321 | NEXT_NO_MODE_CHANGE(fpxxo,fpxxo) | |
322 | NEXT_NO_MODE_CHANGE(any,fpxxo) | |
323 | END_STATE | |
324 | ||
325 | START_STATE(fp64a) | |
326 | NEXT_REQ_FRE(fp32, fp64a_fp32) | |
327 | NEXT_REQ_FR1(fp64, fp64a_fp64) | |
328 | NEXT(fpxxo, fp64a_fpxxo) | |
329 | NEXT(fpxx, fp64a_fpxx) | |
330 | NEXT_REQ_FR1(fp64a, fp64a) | |
331 | NEXT(any, fp64a) | |
332 | END_STATE | |
333 | ||
334 | START_STATE(fp64) | |
335 | NEXT_REQ_FR1(fp64a, fp64a_fp64) | |
336 | NEXT(fpxxo, fp64_fpxxo) | |
337 | NEXT(fpxx, fp64_fpxx) | |
338 | NEXT_REQ_FR1(fp64, fp64) | |
339 | NEXT(any, fp64) | |
340 | END_STATE | |
341 | ||
342 | START_STATE(fpxxo_fpxx) | |
343 | NEXT_NO_MODE_CHANGE(fp32, fp32_fpxxo_fpxx) | |
344 | NEXT_NO_MODE_CHANGE(fp64, fp64_fpxx_fpxxo) | |
345 | NEXT_NO_MODE_CHANGE(fp64a, fp64a_fpxx_fpxxo) | |
346 | NEXT_NO_MODE_CHANGE(fpxx, fpxxo_fpxx) | |
347 | NEXT_NO_MODE_CHANGE(fpxxo, fpxxo_fpxx) | |
348 | NEXT_NO_MODE_CHANGE(any, fpxxo_fpxx) | |
349 | END_STATE | |
350 | ||
351 | START_STATE(fp32_fpxx) | |
352 | NEXT_REQ_FR0(fp32, fp32_fpxx) | |
353 | NEXT(fpxx, fp32_fpxx) | |
354 | NEXT(fpxxo, fp32_fpxxo_fpxx) | |
355 | NEXT_REQ_FRE(fp64a, fp32_fp64a_fpxx) | |
356 | NEXT(any, fp32_fpxx) | |
357 | END_STATE | |
358 | ||
359 | START_STATE(fp32_fpxxo) | |
360 | NEXT_NO_MODE_CHANGE(fp32, fp32_fpxxo) | |
361 | NEXT_NO_MODE_CHANGE(fpxxo, fp32_fpxxo) | |
362 | NEXT_NO_MODE_CHANGE(fpxx, fp32_fpxxo_fpxx) | |
363 | NEXT_NO_MODE_CHANGE(fp64a, fp32_fp64a_fpxxo) | |
364 | NEXT_NO_MODE_CHANGE(any, fp32_fpxxo) | |
365 | END_STATE | |
366 | ||
367 | START_STATE(fp32_fpxxo_fpxx) | |
368 | NEXT_NO_MODE_CHANGE(fp32, fp32_fpxxo_fpxx) | |
369 | NEXT_NO_MODE_CHANGE(fpxxo, fp32_fpxxo_fpxx) | |
370 | NEXT_NO_MODE_CHANGE(fpxx, fp32_fpxxo_fpxx) | |
371 | NEXT_NO_MODE_CHANGE(fp64a, fp32_fp64a_fpxxo_fpxx) | |
372 | NEXT_NO_MODE_CHANGE(any, fp32_fpxxo_fpxx) | |
373 | END_STATE | |
374 | ||
375 | START_STATE(fp64a_fp32) | |
376 | NEXT_REQ_FRE(fp32, fp64a_fp32) | |
377 | NEXT_REQ_FRE(fp64a, fp64a_fp32) | |
378 | NEXT(fpxxo, fp32_fp64a_fpxxo) | |
379 | NEXT(fpxx, fp32_fp64a_fpxx) | |
380 | NEXT(any, fp64a_fp32) | |
381 | END_STATE | |
382 | ||
383 | START_STATE(fp64a_fpxx) | |
384 | NEXT_REQ_FRE(fp32, fp32_fp64a_fpxx) | |
385 | NEXT_REQ_FR1(fp64a, fp64a_fpxx) | |
386 | NEXT(fpxx, fp64a_fpxx) | |
387 | NEXT(fpxxo, fp64a_fpxx_fpxxo) | |
388 | NEXT_REQ_FR1(fp64, fp64a_fp64_fpxx) | |
389 | NEXT(any, fp64a_fpxx) | |
390 | END_STATE | |
391 | ||
392 | START_STATE(fp64a_fpxxo) | |
393 | NEXT_NO_MODE_CHANGE(fp32, fp32_fp64a_fpxxo) | |
394 | NEXT_NO_MODE_CHANGE(fp64a, fp64a_fpxxo) | |
395 | NEXT_NO_MODE_CHANGE(fpxx, fp64a_fpxx_fpxxo) | |
396 | NEXT_NO_MODE_CHANGE(fpxxo, fp64a_fpxxo) | |
397 | NEXT_NO_MODE_CHANGE(fp64, fp64a_fp64_fpxxo) | |
398 | NEXT_NO_MODE_CHANGE(any, fp64a_fpxxo) | |
399 | END_STATE | |
400 | ||
401 | START_STATE(fp64a_fpxx_fpxxo) | |
402 | NEXT_NO_MODE_CHANGE(fp32, fp32_fp64a_fpxxo_fpxx) | |
403 | NEXT_NO_MODE_CHANGE(fp64a, fp64a_fpxx_fpxxo) | |
404 | NEXT_NO_MODE_CHANGE(fpxx, fp64a_fpxx_fpxxo) | |
405 | NEXT_NO_MODE_CHANGE(fpxxo, fp64a_fpxx_fpxxo) | |
406 | NEXT_NO_MODE_CHANGE(fp64, fp64a_fp64_fpxxo_fpxx) | |
407 | NEXT_NO_MODE_CHANGE(any, fp64a_fpxx_fpxxo) | |
408 | END_STATE | |
409 | ||
410 | START_STATE(fp64_fpxx) | |
411 | NEXT_REQ_FR1(fp64a, fp64a_fp64_fpxx) | |
412 | NEXT(fpxxo, fp64_fpxx_fpxxo) | |
413 | NEXT(fpxx, fp64_fpxx) | |
414 | NEXT_REQ_FR1(fp64, fp64_fpxx) | |
415 | NEXT(any, fp64_fpxx) | |
416 | END_STATE | |
417 | ||
418 | START_STATE(fp64_fpxxo) | |
419 | NEXT_NO_MODE_CHANGE(fp64a, fp64a_fp64_fpxxo) | |
420 | NEXT_NO_MODE_CHANGE(fpxxo, fp64_fpxxo) | |
421 | NEXT_NO_MODE_CHANGE(fpxx, fp64_fpxx_fpxxo) | |
422 | NEXT_NO_MODE_CHANGE(fp64, fp64_fpxxo) | |
423 | NEXT_NO_MODE_CHANGE(any, fp64_fpxxo) | |
424 | END_STATE | |
425 | ||
426 | START_STATE(fp64_fpxx_fpxxo) | |
427 | NEXT_NO_MODE_CHANGE(fp64a, fp64a_fp64_fpxxo_fpxx) | |
428 | NEXT_NO_MODE_CHANGE(fpxxo, fp64_fpxx_fpxxo) | |
429 | NEXT_NO_MODE_CHANGE(fpxx, fp64_fpxx_fpxxo) | |
430 | NEXT_NO_MODE_CHANGE(fp64, fp64_fpxx_fpxxo) | |
431 | NEXT_NO_MODE_CHANGE(any, fp64_fpxx_fpxxo) | |
432 | END_STATE | |
433 | ||
434 | START_STATE(fp64a_fp64) | |
435 | NEXT_REQ_FR1(fp64a, fp64a_fp64) | |
436 | NEXT(fpxxo, fp64a_fp64_fpxxo) | |
437 | NEXT(fpxx, fp64a_fp64_fpxx) | |
438 | NEXT_REQ_FR1(fp64, fp64a_fp64) | |
439 | NEXT(any, fp64a_fp64) | |
440 | END_STATE | |
441 | ||
442 | START_STATE(fp64a_fp64_fpxx) | |
443 | NEXT_REQ_FR1(fp64a, fp64a_fp64_fpxx) | |
444 | NEXT(fpxxo, fp64a_fp64_fpxxo_fpxx) | |
445 | NEXT(fpxx, fp64a_fp64_fpxx) | |
446 | NEXT_REQ_FR1(fp64, fp64a_fp64_fpxx) | |
447 | NEXT(any, fp64a_fp64_fpxx) | |
448 | END_STATE | |
449 | ||
450 | START_STATE(fp64a_fp64_fpxxo) | |
451 | NEXT_NO_MODE_CHANGE(fp64a, fp64a_fp64_fpxxo) | |
452 | NEXT_NO_MODE_CHANGE(fpxx, fp64a_fp64_fpxxo_fpxx) | |
453 | NEXT_NO_MODE_CHANGE(fpxxo, fp64a_fp64_fpxxo) | |
454 | NEXT_NO_MODE_CHANGE(fp64, fp64a_fp64_fpxxo) | |
455 | NEXT_NO_MODE_CHANGE(any, fp64a_fp64_fpxxo) | |
456 | END_STATE | |
457 | ||
458 | START_STATE(fp64a_fp64_fpxxo_fpxx) | |
459 | NEXT_NO_MODE_CHANGE(fp64a, fp64a_fp64_fpxxo_fpxx) | |
460 | NEXT_NO_MODE_CHANGE(fpxx, fp64a_fp64_fpxxo_fpxx) | |
461 | NEXT_NO_MODE_CHANGE(fpxxo, fp64a_fp64_fpxxo_fpxx) | |
462 | NEXT_NO_MODE_CHANGE(fp64, fp64a_fp64_fpxxo_fpxx) | |
463 | NEXT_NO_MODE_CHANGE(any, fp64a_fp64_fpxxo_fpxx) | |
464 | END_STATE | |
465 | ||
466 | START_STATE(fp32_fp64a_fpxx) | |
467 | NEXT_REQ_FRE(fp32, fp32_fp64a_fpxx) | |
468 | NEXT_REQ_FRE(fp64a, fp32_fp64a_fpxx) | |
469 | NEXT(fpxxo, fp32_fp64a_fpxxo_fpxx) | |
470 | NEXT(fpxx, fp32_fp64a_fpxx) | |
471 | NEXT(any, fp32_fp64a_fpxx) | |
472 | END_STATE | |
473 | ||
474 | START_STATE(fp32_fp64a_fpxxo) | |
475 | NEXT_NO_MODE_CHANGE(fp32, fp32_fp64a_fpxxo) | |
476 | NEXT_NO_MODE_CHANGE(fp64a, fp32_fp64a_fpxxo) | |
477 | NEXT_NO_MODE_CHANGE(fpxx, fp32_fp64a_fpxxo_fpxx) | |
478 | NEXT_NO_MODE_CHANGE(fpxxo, fp32_fp64a_fpxxo) | |
479 | NEXT_NO_MODE_CHANGE(any, fp32_fp64a_fpxxo) | |
480 | END_STATE | |
481 | ||
482 | START_STATE(fp32_fp64a_fpxxo_fpxx) | |
483 | NEXT_NO_MODE_CHANGE(fp32, fp32_fp64a_fpxxo_fpxx) | |
484 | NEXT_NO_MODE_CHANGE(fp64a, fp32_fp64a_fpxxo_fpxx) | |
485 | NEXT_NO_MODE_CHANGE(fpxx, fp32_fp64a_fpxxo_fpxx) | |
486 | NEXT_NO_MODE_CHANGE(fpxxo, fp32_fp64a_fpxxo_fpxx) | |
487 | NEXT_NO_MODE_CHANGE(any, fp32_fp64a_fpxxo_fpxx) | |
488 | END_STATE | |
489 | } | |
490 | ||
491 | if (obj != o_max) | |
492 | fp_obj_count[obj]++; | |
493 | ||
494 | return true; | |
495 | } | |
496 | ||
497 | /* Run the state machine by removing an object. */ | |
498 | ||
499 | static bool | |
500 | remove_object (enum fp_obj obj) | |
501 | { | |
502 | if (obj == o_max) | |
503 | return false; | |
504 | ||
505 | fp_obj_count[obj]--; | |
506 | ||
507 | /* We can't change fp state until all the objects | |
508 | of a particular type have been unloaded. */ | |
509 | if (fp_obj_count[obj] != 0) | |
510 | return false; | |
511 | ||
512 | switch (current_fp_state) | |
513 | { | |
514 | START_STATE(soft) | |
515 | NEXT(soft,any) | |
516 | END_STATE | |
517 | ||
518 | START_STATE(single) | |
519 | NEXT(single,any) | |
520 | END_STATE | |
521 | ||
522 | START_STATE(any) | |
523 | NEXT(any,any) | |
524 | END_STATE | |
525 | ||
526 | START_STATE(fp32) | |
527 | NEXT (fp32,any) | |
528 | END_STATE | |
529 | ||
530 | START_STATE(fpxx) | |
531 | NEXT (fpxx,any) | |
532 | END_STATE | |
533 | ||
534 | START_STATE(fpxxo) | |
535 | NEXT (fpxxo,any) | |
536 | END_STATE | |
537 | ||
538 | START_STATE(fp64a) | |
539 | NEXT(fp64a, any) | |
540 | END_STATE | |
541 | ||
542 | START_STATE(fp64) | |
543 | NEXT(fp64, any) | |
544 | END_STATE | |
545 | ||
546 | START_STATE(fpxxo_fpxx) | |
547 | NEXT(fpxx, fpxxo) | |
548 | NEXT(fpxxo, fpxx) | |
549 | END_STATE | |
550 | ||
551 | START_STATE(fp32_fpxx) | |
552 | NEXT(fp32, fpxx) | |
553 | NEXT(fpxx, fp32) | |
554 | END_STATE | |
555 | ||
556 | START_STATE(fp32_fpxxo) | |
557 | NEXT(fp32, fpxxo) | |
558 | NEXT(fpxxo, fp32) | |
559 | END_STATE | |
560 | ||
561 | START_STATE(fp32_fpxxo_fpxx) | |
562 | NEXT(fp32, fpxxo_fpxx) | |
563 | NEXT(fpxxo, fp32_fpxx) | |
564 | NEXT(fpxx, fp32_fpxxo) | |
565 | END_STATE | |
566 | ||
567 | START_STATE(fp64a_fp32) | |
568 | NEXT(fp32, fp64a) | |
569 | NEXT(fp64a, fp32) | |
570 | END_STATE | |
571 | ||
572 | START_STATE(fp64a_fpxx) | |
573 | NEXT(fp64a, fpxx) | |
574 | NEXT(fpxx, fp64a) | |
575 | END_STATE | |
576 | ||
577 | START_STATE(fp64a_fpxxo) | |
578 | NEXT(fp64a, fpxxo) | |
579 | NEXT(fpxxo, fp64a) | |
580 | END_STATE | |
581 | ||
582 | START_STATE(fp64a_fpxx_fpxxo) | |
583 | NEXT(fp64a, fpxxo_fpxx) | |
584 | NEXT(fpxx, fp64a_fpxxo) | |
585 | NEXT(fpxxo, fp64a_fpxx) | |
586 | END_STATE | |
587 | ||
588 | START_STATE(fp64_fpxx) | |
589 | NEXT(fpxx, fp64) | |
590 | NEXT(fp64, fpxx) | |
591 | END_STATE | |
592 | ||
593 | START_STATE(fp64_fpxxo) | |
594 | NEXT(fpxxo, fp64) | |
595 | NEXT(fp64, fpxxo) | |
596 | END_STATE | |
597 | ||
598 | START_STATE(fp64_fpxx_fpxxo) | |
599 | NEXT(fp64, fpxxo_fpxx) | |
600 | NEXT(fpxxo, fp64_fpxx) | |
601 | NEXT(fpxx, fp64_fpxxo) | |
602 | END_STATE | |
603 | ||
604 | START_STATE(fp64a_fp64) | |
605 | NEXT(fp64a, fp64) | |
606 | NEXT(fp64, fp64a) | |
607 | END_STATE | |
608 | ||
609 | START_STATE(fp64a_fp64_fpxx) | |
610 | NEXT(fp64a, fp64_fpxx) | |
611 | NEXT(fpxx, fp64a_fp64) | |
612 | NEXT(fp64, fp64a_fpxx) | |
613 | END_STATE | |
614 | ||
615 | START_STATE(fp64a_fp64_fpxxo) | |
616 | NEXT(fp64a, fp64_fpxxo) | |
617 | NEXT(fpxxo, fp64a_fp64) | |
618 | NEXT(fp64, fp64a_fpxxo) | |
619 | END_STATE | |
620 | ||
621 | START_STATE(fp64a_fp64_fpxxo_fpxx) | |
622 | NEXT(fp64a, fp64_fpxx_fpxxo) | |
623 | NEXT(fpxx, fp64a_fp64_fpxxo) | |
624 | NEXT(fpxxo, fp64a_fp64_fpxx) | |
625 | NEXT(fp64, fp64a_fpxx_fpxxo) | |
626 | END_STATE | |
627 | ||
628 | START_STATE(fp32_fp64a_fpxx) | |
629 | NEXT(fp32, fp64a_fpxx) | |
630 | NEXT(fp64a, fp32_fpxx) | |
631 | NEXT(fpxx, fp64a_fp32) | |
632 | END_STATE | |
633 | ||
634 | START_STATE(fp32_fp64a_fpxxo) | |
635 | NEXT(fp32, fp64a_fpxxo) | |
636 | NEXT(fp64a, fp32_fpxxo) | |
637 | NEXT(fpxxo, fp64a_fp32) | |
638 | END_STATE | |
639 | ||
640 | START_STATE(fp32_fp64a_fpxxo_fpxx) | |
641 | NEXT(fp32, fp64a_fpxx_fpxxo) | |
642 | NEXT(fp64a, fp32_fpxxo_fpxx) | |
643 | NEXT(fpxx, fp32_fp64a_fpxxo) | |
644 | NEXT(fpxxo, fp32_fp64a_fpxx) | |
645 | END_STATE | |
646 | } | |
647 | ||
648 | return true; | |
649 | } | |
650 | ||
651 | static int | |
652 | mode_transition_valid_p (void) | |
653 | { | |
654 | int prev_fp_mode; | |
655 | ||
656 | /* Get the current fp mode. */ | |
657 | prev_fp_mode = current_fp_mode; | |
658 | #if HAVE_PRCTL_FP_MODE | |
659 | current_fp_mode = prctl (PR_GET_FP_MODE); | |
660 | ||
661 | /* If the prctl call fails assume the core only has FR0 mode support. */ | |
662 | if (current_fp_mode == -1) | |
663 | current_fp_mode = 0; | |
664 | #endif | |
665 | ||
666 | if (!current_mode_valid_p (current_fp_state)) | |
667 | return 0; | |
668 | ||
669 | /* Check if mode changes are not allowed but a mode change happened. */ | |
670 | if (cant_change_mode | |
671 | && current_fp_mode != prev_fp_mode) | |
672 | return 0; | |
673 | ||
674 | return 1; | |
675 | } | |
676 | ||
677 | /* Load OBJ and check that it was/was not loaded correctly. */ | |
678 | bool | |
679 | load_object (enum fp_obj obj) | |
680 | { | |
681 | bool should_load = set_next_fp_state (obj); | |
682 | ||
683 | shared_lib_ptrs[obj] = dlopen (shared_lib_names[obj], RTLD_LAZY); | |
684 | ||
685 | /* If we expected an error and the load was successful then fail. */ | |
686 | if (!should_load && (shared_lib_ptrs[obj] != 0)) | |
687 | return false; | |
688 | ||
689 | if (should_load && (shared_lib_ptrs[obj] == 0)) | |
690 | return false; | |
691 | ||
692 | if (!mode_transition_valid_p ()) | |
693 | return false; | |
694 | ||
695 | return true; | |
696 | } | |
697 | ||
698 | /* Remove an object and check the state remains valid. */ | |
699 | bool | |
700 | unload_object (enum fp_obj obj) | |
701 | { | |
702 | if (!shared_lib_ptrs[obj]) | |
703 | return true; | |
704 | ||
705 | remove_object (obj); | |
706 | ||
707 | if (dlclose (shared_lib_ptrs[obj]) != 0) | |
708 | return false; | |
709 | ||
710 | shared_lib_ptrs[obj] = 0; | |
711 | ||
712 | if (!mode_transition_valid_p ()) | |
713 | return false; | |
714 | ||
715 | return true; | |
716 | } | |
717 | ||
718 | /* Load every permuation of OBJECTS. */ | |
719 | static bool | |
720 | test_permutations (enum fp_obj objects[], int count) | |
721 | { | |
722 | int i; | |
723 | ||
724 | for (i = 0 ; i < count ; i++) | |
725 | { | |
726 | if (!load_object (objects[i])) | |
727 | return false; | |
728 | ||
729 | if (count > 1) | |
730 | { | |
731 | enum fp_obj new_objects[count - 1]; | |
732 | int j; | |
733 | int k = 0; | |
734 | ||
735 | for (j = 0 ; j < count ; j++) | |
736 | { | |
737 | if (j != i) | |
738 | new_objects[k++] = objects[j]; | |
739 | } | |
740 | ||
741 | if (!test_permutations (new_objects, count - 1)) | |
742 | return false; | |
743 | } | |
744 | ||
745 | if (!unload_object (objects[i])) | |
746 | return false; | |
747 | } | |
748 | return true; | |
749 | } | |
750 | ||
751 | int | |
752 | do_test (void) | |
753 | { | |
754 | #if HAVE_PRCTL_FP_MODE | |
755 | /* Determine available hardware support and current mode. */ | |
756 | current_fp_mode = prctl (PR_GET_FP_MODE); | |
757 | ||
758 | /* If the prctl call fails assume the core only has FR0 mode support. */ | |
759 | if (current_fp_mode == -1) | |
760 | current_fp_mode = 0; | |
761 | else | |
762 | { | |
763 | if (prctl (PR_SET_FP_MODE, 0) != 0) | |
764 | { | |
765 | if (errno == ENOTSUP) | |
766 | is_r6 = true; | |
767 | else | |
768 | { | |
769 | printf ("unexpected error from PR_SET_FP_MODE, 0: %m\n"); | |
770 | return 1; | |
771 | } | |
772 | } | |
773 | ||
774 | if (prctl (PR_SET_FP_MODE, PR_FP_MODE_FR) != 0) | |
775 | { | |
776 | if (errno != ENOTSUP) | |
777 | { | |
778 | printf ("unexpected error from PR_SET_FP_MODE, " | |
779 | "PR_FP_MODE_FR: %m\n"); | |
780 | return 1; | |
781 | } | |
782 | } | |
783 | else | |
784 | has_fr1 = true; | |
785 | ||
786 | if (prctl (PR_SET_FP_MODE, PR_FP_MODE_FR | PR_FP_MODE_FRE) != 0) | |
787 | { | |
788 | if (errno != ENOTSUP) | |
789 | { | |
790 | printf ("unexpected error from PR_SET_FP_MODE, " | |
791 | "PR_FP_MODE_FR | PR_FP_MODE_FRE: %m\n"); | |
792 | return 1; | |
793 | } | |
794 | } | |
795 | else | |
796 | has_fre = true; | |
797 | ||
798 | if (prctl (PR_SET_FP_MODE, current_fp_mode) != 0) | |
799 | { | |
800 | printf ("unable to restore initial FP mode: %m\n"); | |
801 | return 1; | |
802 | } | |
803 | } | |
804 | ||
805 | if ((is_r6 && !(current_fp_mode & PR_FP_MODE_FR)) | |
806 | || (!has_fr1 && (current_fp_mode & PR_FP_MODE_FR)) | |
807 | || (!has_fre && (current_fp_mode & PR_FP_MODE_FRE))) | |
808 | { | |
809 | puts ("Inconsistency detected between initial FP mode " | |
810 | "and supported FP modes\n"); | |
811 | return 1; | |
812 | } | |
813 | #else | |
814 | current_fp_mode = 0; | |
815 | #endif | |
816 | ||
817 | /* Set up the initial state from executable and LDSO. Assumptions: | |
818 | 1) All system libraries have the same ABI as ld.so. | |
819 | 2) Due to the fact that ld.so is tested by invoking it directly | |
820 | rather than via an interpreter, there is no point in varying | |
821 | the ABI of the test program. Instead the ABI only varies for | |
822 | the shared libraries which get loaded. */ | |
823 | if (!set_next_fp_state (FPABI_NATIVE)) | |
824 | { | |
825 | puts ("Unable to enter initial ABI state\n"); | |
826 | return 1; | |
827 | } | |
828 | ||
829 | /* Compare the computed state with the hardware state. */ | |
830 | if (!mode_transition_valid_p ()) | |
831 | return 1; | |
832 | ||
833 | /* Run all possible test permutations. */ | |
834 | if (!test_permutations (test_objects, FPABI_COUNT)) | |
835 | { | |
836 | puts ("Mode checks failed\n"); | |
837 | return 1; | |
838 | } | |
839 | ||
840 | return 0; | |
841 | } | |
842 | ||
843 | #define TEST_FUNCTION do_test () | |
844 | #include "../../test-skeleton.c" |