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Commit | Line | Data |
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203b91b9 RS |
1 | /* More subroutines needed by GCC output code on some machines. */ |
2 | /* Compile this one with gcc. */ | |
5d0e6486 | 3 | /* Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
8733892f | 4 | 2000, 2001, 2002 Free Software Foundation, Inc. |
203b91b9 | 5 | |
1322177d | 6 | This file is part of GCC. |
203b91b9 | 7 | |
1322177d LB |
8 | GCC is free software; you can redistribute it and/or modify it under |
9 | the terms of the GNU General Public License as published by the Free | |
10 | Software Foundation; either version 2, or (at your option) any later | |
11 | version. | |
203b91b9 | 12 | |
f7af368f JL |
13 | In addition to the permissions in the GNU General Public License, the |
14 | Free Software Foundation gives you unlimited permission to link the | |
15 | compiled version of this file into combinations with other programs, | |
16 | and to distribute those combinations without any restriction coming | |
17 | from the use of this file. (The General Public License restrictions | |
18 | do apply in other respects; for example, they cover modification of | |
19 | the file, and distribution when not linked into a combine | |
20 | executable.) | |
21 | ||
1322177d LB |
22 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
23 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
24 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
25 | for more details. | |
203b91b9 RS |
26 | |
27 | You should have received a copy of the GNU General Public License | |
1322177d LB |
28 | along with GCC; see the file COPYING. If not, write to the Free |
29 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
30 | 02111-1307, USA. */ | |
203b91b9 | 31 | |
53585c36 RH |
32 | |
33 | /* We include auto-host.h here to get HAVE_GAS_HIDDEN. This is | |
34 | supposedly valid even though this is a "target" file. */ | |
35 | #include "auto-host.h" | |
36 | ||
203b91b9 RS |
37 | /* It is incorrect to include config.h here, because this file is being |
38 | compiled for the target, and hence definitions concerning only the host | |
39 | do not apply. */ | |
0dadecf6 | 40 | #include "tconfig.h" |
2e39bdbe | 41 | #include "tsystem.h" |
4977bab6 ZW |
42 | #include "coretypes.h" |
43 | #include "tm.h" | |
2467749d | 44 | |
203b91b9 RS |
45 | /* Don't use `fancy_abort' here even if config.h says to use it. */ |
46 | #ifdef abort | |
47 | #undef abort | |
48 | #endif | |
49 | ||
53585c36 RH |
50 | #ifdef HAVE_GAS_HIDDEN |
51 | #define ATTRIBUTE_HIDDEN __attribute__ ((__visibility__ ("hidden"))) | |
52 | #else | |
53 | #define ATTRIBUTE_HIDDEN | |
54 | #endif | |
55 | ||
299b83b7 | 56 | #include "libgcc2.h" |
203b91b9 | 57 | \f |
d8088c6f BS |
58 | #ifdef DECLARE_LIBRARY_RENAMES |
59 | DECLARE_LIBRARY_RENAMES | |
60 | #endif | |
61 | ||
b68daef4 | 62 | #if defined (L_negdi2) |
3d2adde6 CC |
63 | DWtype |
64 | __negdi2 (DWtype u) | |
65 | { | |
66 | DWunion w; | |
67 | DWunion uu; | |
68 | ||
69 | uu.ll = u; | |
70 | ||
71 | w.s.low = -uu.s.low; | |
72 | w.s.high = -uu.s.high - ((UWtype) w.s.low > 0); | |
73 | ||
74 | return w.ll; | |
75 | } | |
76 | #endif | |
91ce572a CC |
77 | |
78 | #ifdef L_addvsi3 | |
66f77154 MH |
79 | Wtype |
80 | __addvsi3 (Wtype a, Wtype b) | |
91ce572a | 81 | { |
66f77154 | 82 | Wtype w; |
91ce572a CC |
83 | |
84 | w = a + b; | |
85 | ||
86 | if (b >= 0 ? w < a : w > a) | |
87 | abort (); | |
88 | ||
89 | return w; | |
23190837 | 90 | } |
3d2adde6 | 91 | #endif |
91ce572a CC |
92 | \f |
93 | #ifdef L_addvdi3 | |
66f77154 MH |
94 | DWtype |
95 | __addvdi3 (DWtype a, DWtype b) | |
91ce572a | 96 | { |
66f77154 | 97 | DWtype w; |
91ce572a CC |
98 | |
99 | w = a + b; | |
100 | ||
101 | if (b >= 0 ? w < a : w > a) | |
102 | abort (); | |
103 | ||
104 | return w; | |
105 | } | |
106 | #endif | |
107 | \f | |
108 | #ifdef L_subvsi3 | |
66f77154 MH |
109 | Wtype |
110 | __subvsi3 (Wtype a, Wtype b) | |
91ce572a CC |
111 | { |
112 | #ifdef L_addvsi3 | |
113 | return __addvsi3 (a, (-b)); | |
114 | #else | |
66f77154 | 115 | DWtype w; |
91ce572a CC |
116 | |
117 | w = a - b; | |
118 | ||
119 | if (b >= 0 ? w > a : w < a) | |
120 | abort (); | |
121 | ||
122 | return w; | |
123 | #endif | |
124 | } | |
125 | #endif | |
126 | \f | |
127 | #ifdef L_subvdi3 | |
66f77154 MH |
128 | DWtype |
129 | __subvdi3 (DWtype a, DWtype b) | |
91ce572a CC |
130 | { |
131 | #ifdef L_addvdi3 | |
087fc75a | 132 | return __addvdi3 (a, (-b)); |
91ce572a | 133 | #else |
66f77154 | 134 | DWtype w; |
91ce572a CC |
135 | |
136 | w = a - b; | |
137 | ||
138 | if (b >= 0 ? w > a : w < a) | |
139 | abort (); | |
140 | ||
141 | return w; | |
142 | #endif | |
143 | } | |
144 | #endif | |
145 | \f | |
146 | #ifdef L_mulvsi3 | |
66f77154 MH |
147 | Wtype |
148 | __mulvsi3 (Wtype a, Wtype b) | |
91ce572a | 149 | { |
66f77154 | 150 | DWtype w; |
91ce572a CC |
151 | |
152 | w = a * b; | |
153 | ||
3cf37281 | 154 | if (((a >= 0) == (b >= 0)) ? w < 0 : w > 0) |
91ce572a CC |
155 | abort (); |
156 | ||
157 | return w; | |
158 | } | |
159 | #endif | |
160 | \f | |
161 | #ifdef L_negvsi2 | |
66f77154 MH |
162 | Wtype |
163 | __negvsi2 (Wtype a) | |
91ce572a | 164 | { |
e11e816e | 165 | Wtype w; |
91ce572a | 166 | |
e11e816e | 167 | w = -a; |
91ce572a CC |
168 | |
169 | if (a >= 0 ? w > 0 : w < 0) | |
170 | abort (); | |
171 | ||
172 | return w; | |
173 | } | |
174 | #endif | |
175 | \f | |
176 | #ifdef L_negvdi2 | |
66f77154 MH |
177 | DWtype |
178 | __negvdi2 (DWtype a) | |
91ce572a | 179 | { |
e11e816e | 180 | DWtype w; |
91ce572a | 181 | |
e11e816e | 182 | w = -a; |
91ce572a CC |
183 | |
184 | if (a >= 0 ? w > 0 : w < 0) | |
185 | abort (); | |
186 | ||
e11e816e | 187 | return w; |
91ce572a CC |
188 | } |
189 | #endif | |
190 | \f | |
191 | #ifdef L_absvsi2 | |
66f77154 MH |
192 | Wtype |
193 | __absvsi2 (Wtype a) | |
91ce572a | 194 | { |
e11e816e | 195 | Wtype w = a; |
91ce572a | 196 | |
e11e816e | 197 | if (a < 0) |
91ce572a | 198 | #ifdef L_negvsi2 |
e11e816e | 199 | w = __negvsi2 (a); |
91ce572a | 200 | #else |
e11e816e | 201 | w = -a; |
91ce572a | 202 | |
e11e816e KH |
203 | if (w < 0) |
204 | abort (); | |
91ce572a CC |
205 | #endif |
206 | ||
207 | return w; | |
208 | } | |
209 | #endif | |
210 | \f | |
211 | #ifdef L_absvdi2 | |
66f77154 MH |
212 | DWtype |
213 | __absvdi2 (DWtype a) | |
91ce572a | 214 | { |
e11e816e | 215 | DWtype w = a; |
91ce572a | 216 | |
e11e816e | 217 | if (a < 0) |
91ce572a | 218 | #ifdef L_negvsi2 |
e11e816e | 219 | w = __negvsi2 (a); |
91ce572a | 220 | #else |
e11e816e | 221 | w = -a; |
91ce572a | 222 | |
e11e816e KH |
223 | if (w < 0) |
224 | abort (); | |
91ce572a CC |
225 | #endif |
226 | ||
e11e816e | 227 | return w; |
91ce572a CC |
228 | } |
229 | #endif | |
230 | \f | |
231 | #ifdef L_mulvdi3 | |
66f77154 MH |
232 | DWtype |
233 | __mulvdi3 (DWtype u, DWtype v) | |
91ce572a | 234 | { |
e11e816e | 235 | DWtype w; |
91ce572a CC |
236 | |
237 | w = u * v; | |
238 | ||
3d2adde6 | 239 | if (((u >= 0) == (v >= 0)) ? w < 0 : w > 0) |
91ce572a CC |
240 | abort (); |
241 | ||
242 | return w; | |
243 | } | |
244 | #endif | |
245 | \f | |
203b91b9 | 246 | |
3d042e77 | 247 | /* Unless shift functions are defined with full ANSI prototypes, |
37ef1054 | 248 | parameter b will be promoted to int if word_type is smaller than an int. */ |
203b91b9 | 249 | #ifdef L_lshrdi3 |
996ed075 JJ |
250 | DWtype |
251 | __lshrdi3 (DWtype u, word_type b) | |
203b91b9 | 252 | { |
996ed075 | 253 | DWunion w; |
b799cfc3 | 254 | word_type bm; |
996ed075 | 255 | DWunion uu; |
203b91b9 RS |
256 | |
257 | if (b == 0) | |
258 | return u; | |
259 | ||
260 | uu.ll = u; | |
261 | ||
996ed075 | 262 | bm = (sizeof (Wtype) * BITS_PER_UNIT) - b; |
203b91b9 RS |
263 | if (bm <= 0) |
264 | { | |
265 | w.s.high = 0; | |
6da9c622 | 266 | w.s.low = (UWtype) uu.s.high >> -bm; |
203b91b9 RS |
267 | } |
268 | else | |
269 | { | |
6da9c622 RK |
270 | UWtype carries = (UWtype) uu.s.high << bm; |
271 | ||
272 | w.s.high = (UWtype) uu.s.high >> b; | |
273 | w.s.low = ((UWtype) uu.s.low >> b) | carries; | |
203b91b9 RS |
274 | } |
275 | ||
276 | return w.ll; | |
277 | } | |
278 | #endif | |
279 | ||
280 | #ifdef L_ashldi3 | |
996ed075 JJ |
281 | DWtype |
282 | __ashldi3 (DWtype u, word_type b) | |
203b91b9 | 283 | { |
996ed075 | 284 | DWunion w; |
b799cfc3 | 285 | word_type bm; |
996ed075 | 286 | DWunion uu; |
203b91b9 RS |
287 | |
288 | if (b == 0) | |
289 | return u; | |
290 | ||
291 | uu.ll = u; | |
292 | ||
996ed075 | 293 | bm = (sizeof (Wtype) * BITS_PER_UNIT) - b; |
203b91b9 RS |
294 | if (bm <= 0) |
295 | { | |
296 | w.s.low = 0; | |
6da9c622 | 297 | w.s.high = (UWtype) uu.s.low << -bm; |
203b91b9 RS |
298 | } |
299 | else | |
300 | { | |
6da9c622 RK |
301 | UWtype carries = (UWtype) uu.s.low >> bm; |
302 | ||
303 | w.s.low = (UWtype) uu.s.low << b; | |
304 | w.s.high = ((UWtype) uu.s.high << b) | carries; | |
203b91b9 RS |
305 | } |
306 | ||
307 | return w.ll; | |
308 | } | |
309 | #endif | |
310 | ||
311 | #ifdef L_ashrdi3 | |
996ed075 JJ |
312 | DWtype |
313 | __ashrdi3 (DWtype u, word_type b) | |
203b91b9 | 314 | { |
996ed075 | 315 | DWunion w; |
b799cfc3 | 316 | word_type bm; |
996ed075 | 317 | DWunion uu; |
203b91b9 RS |
318 | |
319 | if (b == 0) | |
320 | return u; | |
321 | ||
322 | uu.ll = u; | |
323 | ||
996ed075 | 324 | bm = (sizeof (Wtype) * BITS_PER_UNIT) - b; |
203b91b9 RS |
325 | if (bm <= 0) |
326 | { | |
327 | /* w.s.high = 1..1 or 0..0 */ | |
996ed075 | 328 | w.s.high = uu.s.high >> (sizeof (Wtype) * BITS_PER_UNIT - 1); |
203b91b9 RS |
329 | w.s.low = uu.s.high >> -bm; |
330 | } | |
331 | else | |
332 | { | |
6da9c622 RK |
333 | UWtype carries = (UWtype) uu.s.high << bm; |
334 | ||
203b91b9 | 335 | w.s.high = uu.s.high >> b; |
6da9c622 | 336 | w.s.low = ((UWtype) uu.s.low >> b) | carries; |
203b91b9 RS |
337 | } |
338 | ||
339 | return w.ll; | |
340 | } | |
341 | #endif | |
342 | \f | |
aa66bd06 | 343 | #ifdef L_ffsdi2 |
dabb3f04 RH |
344 | #undef int |
345 | extern int __ffsdi2 (DWtype u); | |
346 | int | |
996ed075 | 347 | __ffsdi2 (DWtype u) |
aa66bd06 | 348 | { |
d6eacd48 RH |
349 | DWunion uu; |
350 | UWtype word, count, add; | |
351 | ||
aa66bd06 | 352 | uu.ll = u; |
d6eacd48 RH |
353 | if (uu.s.low != 0) |
354 | word = uu.s.low, add = 0; | |
355 | else if (uu.s.high != 0) | |
356 | word = uu.s.high, add = BITS_PER_UNIT * sizeof (Wtype); | |
357 | else | |
358 | return 0; | |
359 | ||
360 | count_trailing_zeros (count, word); | |
361 | return count + add + 1; | |
aa66bd06 RS |
362 | } |
363 | #endif | |
364 | \f | |
203b91b9 | 365 | #ifdef L_muldi3 |
996ed075 JJ |
366 | DWtype |
367 | __muldi3 (DWtype u, DWtype v) | |
203b91b9 | 368 | { |
996ed075 JJ |
369 | DWunion w; |
370 | DWunion uu, vv; | |
203b91b9 RS |
371 | |
372 | uu.ll = u, | |
373 | vv.ll = v; | |
374 | ||
375 | w.ll = __umulsidi3 (uu.s.low, vv.s.low); | |
996ed075 JJ |
376 | w.s.high += ((UWtype) uu.s.low * (UWtype) vv.s.high |
377 | + (UWtype) uu.s.high * (UWtype) vv.s.low); | |
203b91b9 RS |
378 | |
379 | return w.ll; | |
380 | } | |
381 | #endif | |
382 | \f | |
59798a0c UW |
383 | #if (defined (L_udivdi3) || defined (L_divdi3) || \ |
384 | defined (L_umoddi3) || defined (L_moddi3)) | |
f8eef883 | 385 | #if defined (sdiv_qrnnd) |
59798a0c UW |
386 | #define L_udiv_w_sdiv |
387 | #endif | |
f8eef883 | 388 | #endif |
59798a0c | 389 | |
3904131a | 390 | #ifdef L_udiv_w_sdiv |
ce13d15f | 391 | #if defined (sdiv_qrnnd) |
59798a0c UW |
392 | #if (defined (L_udivdi3) || defined (L_divdi3) || \ |
393 | defined (L_umoddi3) || defined (L_moddi3)) | |
1ab9ba62 | 394 | static inline __attribute__ ((__always_inline__)) |
59798a0c | 395 | #endif |
996ed075 JJ |
396 | UWtype |
397 | __udiv_w_sdiv (UWtype *rp, UWtype a1, UWtype a0, UWtype d) | |
431b1ee0 | 398 | { |
996ed075 JJ |
399 | UWtype q, r; |
400 | UWtype c0, c1, b1; | |
431b1ee0 | 401 | |
996ed075 | 402 | if ((Wtype) d >= 0) |
431b1ee0 | 403 | { |
996ed075 | 404 | if (a1 < d - a1 - (a0 >> (W_TYPE_SIZE - 1))) |
431b1ee0 TG |
405 | { |
406 | /* dividend, divisor, and quotient are nonnegative */ | |
407 | sdiv_qrnnd (q, r, a1, a0, d); | |
408 | } | |
409 | else | |
410 | { | |
411 | /* Compute c1*2^32 + c0 = a1*2^32 + a0 - 2^31*d */ | |
996ed075 | 412 | sub_ddmmss (c1, c0, a1, a0, d >> 1, d << (W_TYPE_SIZE - 1)); |
431b1ee0 TG |
413 | /* Divide (c1*2^32 + c0) by d */ |
414 | sdiv_qrnnd (q, r, c1, c0, d); | |
415 | /* Add 2^31 to quotient */ | |
996ed075 | 416 | q += (UWtype) 1 << (W_TYPE_SIZE - 1); |
431b1ee0 TG |
417 | } |
418 | } | |
419 | else | |
420 | { | |
421 | b1 = d >> 1; /* d/2, between 2^30 and 2^31 - 1 */ | |
422 | c1 = a1 >> 1; /* A/2 */ | |
996ed075 | 423 | c0 = (a1 << (W_TYPE_SIZE - 1)) + (a0 >> 1); |
431b1ee0 TG |
424 | |
425 | if (a1 < b1) /* A < 2^32*b1, so A/2 < 2^31*b1 */ | |
426 | { | |
427 | sdiv_qrnnd (q, r, c1, c0, b1); /* (A/2) / (d/2) */ | |
428 | ||
429 | r = 2*r + (a0 & 1); /* Remainder from A/(2*b1) */ | |
430 | if ((d & 1) != 0) | |
431 | { | |
432 | if (r >= q) | |
433 | r = r - q; | |
434 | else if (q - r <= d) | |
435 | { | |
436 | r = r - q + d; | |
437 | q--; | |
438 | } | |
439 | else | |
440 | { | |
441 | r = r - q + 2*d; | |
442 | q -= 2; | |
443 | } | |
444 | } | |
445 | } | |
446 | else if (c1 < b1) /* So 2^31 <= (A/2)/b1 < 2^32 */ | |
447 | { | |
448 | c1 = (b1 - 1) - c1; | |
449 | c0 = ~c0; /* logical NOT */ | |
450 | ||
451 | sdiv_qrnnd (q, r, c1, c0, b1); /* (A/2) / (d/2) */ | |
452 | ||
453 | q = ~q; /* (A/2)/b1 */ | |
454 | r = (b1 - 1) - r; | |
455 | ||
456 | r = 2*r + (a0 & 1); /* A/(2*b1) */ | |
457 | ||
458 | if ((d & 1) != 0) | |
459 | { | |
460 | if (r >= q) | |
461 | r = r - q; | |
462 | else if (q - r <= d) | |
463 | { | |
464 | r = r - q + d; | |
465 | q--; | |
466 | } | |
467 | else | |
468 | { | |
469 | r = r - q + 2*d; | |
470 | q -= 2; | |
471 | } | |
472 | } | |
473 | } | |
474 | else /* Implies c1 = b1 */ | |
475 | { /* Hence a1 = d - 1 = 2*b1 - 1 */ | |
476 | if (a0 >= -d) | |
477 | { | |
478 | q = -1; | |
479 | r = a0 + d; | |
480 | } | |
481 | else | |
482 | { | |
483 | q = -2; | |
484 | r = a0 + 2*d; | |
485 | } | |
486 | } | |
487 | } | |
488 | ||
489 | *rp = r; | |
490 | return q; | |
491 | } | |
ce13d15f RK |
492 | #else |
493 | /* If sdiv_qrnnd doesn't exist, define dummy __udiv_w_sdiv. */ | |
996ed075 JJ |
494 | UWtype |
495 | __udiv_w_sdiv (UWtype *rp __attribute__ ((__unused__)), | |
496 | UWtype a1 __attribute__ ((__unused__)), | |
497 | UWtype a0 __attribute__ ((__unused__)), | |
498 | UWtype d __attribute__ ((__unused__))) | |
081f5e7e KG |
499 | { |
500 | return 0; | |
501 | } | |
ce13d15f | 502 | #endif |
431b1ee0 TG |
503 | #endif |
504 | \f | |
536bfcd0 RK |
505 | #if (defined (L_udivdi3) || defined (L_divdi3) || \ |
506 | defined (L_umoddi3) || defined (L_moddi3)) | |
507 | #define L_udivmoddi4 | |
508 | #endif | |
509 | ||
d6eacd48 RH |
510 | #ifdef L_clz |
511 | const UQItype __clz_tab[] = | |
203b91b9 RS |
512 | { |
513 | 0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5, | |
514 | 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6, | |
515 | 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, | |
516 | 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, | |
517 | 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, | |
518 | 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, | |
519 | 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, | |
520 | 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, | |
521 | }; | |
d6eacd48 | 522 | #endif |
2928cd7a RH |
523 | \f |
524 | #ifdef L_clzsi2 | |
dabb3f04 RH |
525 | #undef int |
526 | extern int __clzsi2 (USItype x); | |
527 | int | |
2928cd7a RH |
528 | __clzsi2 (USItype x) |
529 | { | |
53585c36 RH |
530 | UWtype w = x; |
531 | Wtype ret; | |
2928cd7a | 532 | |
53585c36 RH |
533 | count_leading_zeros (ret, w); |
534 | ret -= (sizeof(w) - sizeof(x)) * BITS_PER_UNIT; | |
535 | ||
536 | return ret; | |
2928cd7a RH |
537 | } |
538 | #endif | |
539 | \f | |
540 | #ifdef L_clzdi2 | |
dabb3f04 RH |
541 | #undef int |
542 | extern int __clzdi2 (UDItype x); | |
543 | int | |
2928cd7a RH |
544 | __clzdi2 (UDItype x) |
545 | { | |
53585c36 RH |
546 | UWtype word; |
547 | Wtype ret, add; | |
548 | ||
549 | if (sizeof(x) > sizeof(word)) | |
550 | { | |
551 | DWunion uu; | |
2928cd7a | 552 | |
53585c36 RH |
553 | uu.ll = x; |
554 | if (uu.s.high) | |
555 | word = uu.s.high, add = 0; | |
556 | else | |
557 | word = uu.s.low, add = W_TYPE_SIZE; | |
558 | } | |
559 | else | |
560 | word = x, add = (Wtype)(sizeof(x) - sizeof(word)) * BITS_PER_UNIT; | |
2928cd7a | 561 | |
53585c36 RH |
562 | count_leading_zeros (ret, word); |
563 | return ret + add; | |
2928cd7a RH |
564 | } |
565 | #endif | |
566 | \f | |
567 | #ifdef L_ctzsi2 | |
dabb3f04 RH |
568 | #undef int |
569 | extern int __ctzsi2 (USItype x); | |
570 | int | |
2928cd7a RH |
571 | __ctzsi2 (USItype x) |
572 | { | |
53585c36 | 573 | Wtype ret; |
2928cd7a | 574 | |
53585c36 | 575 | count_trailing_zeros (ret, x); |
2928cd7a | 576 | |
53585c36 | 577 | return ret; |
2928cd7a RH |
578 | } |
579 | #endif | |
580 | \f | |
581 | #ifdef L_ctzdi2 | |
dabb3f04 RH |
582 | #undef int |
583 | extern int __ctzdi2 (UDItype x); | |
584 | int | |
2928cd7a RH |
585 | __ctzdi2 (UDItype x) |
586 | { | |
53585c36 RH |
587 | UWtype word; |
588 | Wtype ret, add; | |
589 | ||
590 | if (sizeof(x) > sizeof(word)) | |
591 | { | |
592 | DWunion uu; | |
2928cd7a | 593 | |
53585c36 RH |
594 | uu.ll = x; |
595 | if (uu.s.low) | |
596 | word = uu.s.low, add = 0; | |
597 | else | |
598 | word = uu.s.high, add = W_TYPE_SIZE; | |
599 | } | |
600 | else | |
601 | word = x, add = 0; | |
2928cd7a | 602 | |
53585c36 RH |
603 | count_trailing_zeros (ret, word); |
604 | return ret + add; | |
2928cd7a RH |
605 | } |
606 | #endif | |
607 | ||
53585c36 RH |
608 | #if (defined (L_popcountsi2) || defined (L_popcountdi2) \ |
609 | || defined (L_popcount_tab)) | |
610 | extern const UQItype __popcount_tab[] ATTRIBUTE_HIDDEN; | |
2928cd7a RH |
611 | #endif |
612 | ||
613 | #ifdef L_popcount_tab | |
614 | const UQItype __popcount_tab[] = | |
615 | { | |
616 | 0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4,1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5, | |
617 | 1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6, | |
618 | 1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6, | |
619 | 2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7, | |
620 | 1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6, | |
621 | 2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7, | |
622 | 2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7, | |
623 | 3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,4,5,5,6,5,6,6,7,5,6,6,7,6,7,7,8, | |
624 | }; | |
625 | #endif | |
626 | \f | |
627 | #ifdef L_popcountsi2 | |
dabb3f04 RH |
628 | #undef int |
629 | extern int __popcountsi2 (USItype x); | |
630 | int | |
2928cd7a RH |
631 | __popcountsi2 (USItype x) |
632 | { | |
633 | return __popcount_tab[(x >> 0) & 0xff] | |
634 | + __popcount_tab[(x >> 8) & 0xff] | |
635 | + __popcount_tab[(x >> 16) & 0xff] | |
636 | + __popcount_tab[(x >> 24) & 0xff]; | |
637 | } | |
638 | #endif | |
639 | \f | |
640 | #ifdef L_popcountdi2 | |
dabb3f04 RH |
641 | #undef int |
642 | extern int __popcountdi2 (UDItype x); | |
643 | int | |
2928cd7a RH |
644 | __popcountdi2 (UDItype x) |
645 | { | |
646 | return __popcount_tab[(x >> 0) & 0xff] | |
647 | + __popcount_tab[(x >> 8) & 0xff] | |
648 | + __popcount_tab[(x >> 16) & 0xff] | |
649 | + __popcount_tab[(x >> 24) & 0xff] | |
650 | + __popcount_tab[(x >> 32) & 0xff] | |
651 | + __popcount_tab[(x >> 40) & 0xff] | |
652 | + __popcount_tab[(x >> 48) & 0xff] | |
653 | + __popcount_tab[(x >> 56) & 0xff]; | |
654 | } | |
655 | #endif | |
656 | \f | |
657 | #ifdef L_paritysi2 | |
dabb3f04 RH |
658 | #undef int |
659 | extern int __paritysi2 (USItype x); | |
660 | int | |
2928cd7a RH |
661 | __paritysi2 (USItype x) |
662 | { | |
53585c36 RH |
663 | UWtype nx = x; |
664 | nx ^= nx >> 16; | |
665 | nx ^= nx >> 8; | |
666 | nx ^= nx >> 4; | |
667 | nx ^= nx >> 2; | |
668 | nx ^= nx >> 1; | |
669 | return nx & 1; | |
2928cd7a RH |
670 | } |
671 | #endif | |
672 | \f | |
673 | #ifdef L_paritydi2 | |
dabb3f04 RH |
674 | #undef int |
675 | extern int __paritydi2 (UDItype x); | |
676 | int | |
2928cd7a RH |
677 | __paritydi2 (UDItype x) |
678 | { | |
53585c36 | 679 | UWtype nx = x ^ (x >> 32); |
2928cd7a RH |
680 | nx ^= nx >> 16; |
681 | nx ^= nx >> 8; | |
53585c36 RH |
682 | nx ^= nx >> 4; |
683 | nx ^= nx >> 2; | |
684 | nx ^= nx >> 1; | |
685 | return nx & 1; | |
2928cd7a RH |
686 | } |
687 | #endif | |
d6eacd48 RH |
688 | |
689 | #ifdef L_udivmoddi4 | |
203b91b9 | 690 | |
536bfcd0 RK |
691 | #if (defined (L_udivdi3) || defined (L_divdi3) || \ |
692 | defined (L_umoddi3) || defined (L_moddi3)) | |
1ab9ba62 | 693 | static inline __attribute__ ((__always_inline__)) |
536bfcd0 | 694 | #endif |
996ed075 JJ |
695 | UDWtype |
696 | __udivmoddi4 (UDWtype n, UDWtype d, UDWtype *rp) | |
203b91b9 | 697 | { |
996ed075 JJ |
698 | DWunion ww; |
699 | DWunion nn, dd; | |
700 | DWunion rr; | |
701 | UWtype d0, d1, n0, n1, n2; | |
702 | UWtype q0, q1; | |
703 | UWtype b, bm; | |
203b91b9 RS |
704 | |
705 | nn.ll = n; | |
706 | dd.ll = d; | |
707 | ||
708 | d0 = dd.s.low; | |
709 | d1 = dd.s.high; | |
710 | n0 = nn.s.low; | |
711 | n1 = nn.s.high; | |
712 | ||
713 | #if !UDIV_NEEDS_NORMALIZATION | |
714 | if (d1 == 0) | |
715 | { | |
716 | if (d0 > n1) | |
717 | { | |
718 | /* 0q = nn / 0D */ | |
719 | ||
720 | udiv_qrnnd (q0, n0, n1, n0, d0); | |
721 | q1 = 0; | |
722 | ||
723 | /* Remainder in n0. */ | |
724 | } | |
725 | else | |
726 | { | |
727 | /* qq = NN / 0d */ | |
728 | ||
729 | if (d0 == 0) | |
730 | d0 = 1 / d0; /* Divide intentionally by zero. */ | |
731 | ||
732 | udiv_qrnnd (q1, n1, 0, n1, d0); | |
733 | udiv_qrnnd (q0, n0, n1, n0, d0); | |
734 | ||
735 | /* Remainder in n0. */ | |
736 | } | |
737 | ||
738 | if (rp != 0) | |
739 | { | |
740 | rr.s.low = n0; | |
741 | rr.s.high = 0; | |
742 | *rp = rr.ll; | |
743 | } | |
744 | } | |
745 | ||
746 | #else /* UDIV_NEEDS_NORMALIZATION */ | |
747 | ||
748 | if (d1 == 0) | |
749 | { | |
750 | if (d0 > n1) | |
751 | { | |
752 | /* 0q = nn / 0D */ | |
753 | ||
754 | count_leading_zeros (bm, d0); | |
755 | ||
756 | if (bm != 0) | |
757 | { | |
758 | /* Normalize, i.e. make the most significant bit of the | |
759 | denominator set. */ | |
760 | ||
761 | d0 = d0 << bm; | |
996ed075 | 762 | n1 = (n1 << bm) | (n0 >> (W_TYPE_SIZE - bm)); |
203b91b9 RS |
763 | n0 = n0 << bm; |
764 | } | |
765 | ||
766 | udiv_qrnnd (q0, n0, n1, n0, d0); | |
767 | q1 = 0; | |
768 | ||
769 | /* Remainder in n0 >> bm. */ | |
770 | } | |
771 | else | |
772 | { | |
773 | /* qq = NN / 0d */ | |
774 | ||
775 | if (d0 == 0) | |
776 | d0 = 1 / d0; /* Divide intentionally by zero. */ | |
777 | ||
778 | count_leading_zeros (bm, d0); | |
779 | ||
780 | if (bm == 0) | |
781 | { | |
782 | /* From (n1 >= d0) /\ (the most significant bit of d0 is set), | |
783 | conclude (the most significant bit of n1 is set) /\ (the | |
784 | leading quotient digit q1 = 1). | |
785 | ||
786 | This special case is necessary, not an optimization. | |
996ed075 | 787 | (Shifts counts of W_TYPE_SIZE are undefined.) */ |
203b91b9 RS |
788 | |
789 | n1 -= d0; | |
790 | q1 = 1; | |
791 | } | |
792 | else | |
793 | { | |
794 | /* Normalize. */ | |
795 | ||
996ed075 | 796 | b = W_TYPE_SIZE - bm; |
203b91b9 RS |
797 | |
798 | d0 = d0 << bm; | |
799 | n2 = n1 >> b; | |
800 | n1 = (n1 << bm) | (n0 >> b); | |
801 | n0 = n0 << bm; | |
802 | ||
803 | udiv_qrnnd (q1, n1, n2, n1, d0); | |
804 | } | |
805 | ||
0f41302f | 806 | /* n1 != d0... */ |
203b91b9 RS |
807 | |
808 | udiv_qrnnd (q0, n0, n1, n0, d0); | |
809 | ||
810 | /* Remainder in n0 >> bm. */ | |
811 | } | |
812 | ||
813 | if (rp != 0) | |
814 | { | |
815 | rr.s.low = n0 >> bm; | |
816 | rr.s.high = 0; | |
817 | *rp = rr.ll; | |
818 | } | |
819 | } | |
820 | #endif /* UDIV_NEEDS_NORMALIZATION */ | |
821 | ||
822 | else | |
823 | { | |
824 | if (d1 > n1) | |
825 | { | |
826 | /* 00 = nn / DD */ | |
827 | ||
828 | q0 = 0; | |
829 | q1 = 0; | |
830 | ||
831 | /* Remainder in n1n0. */ | |
832 | if (rp != 0) | |
833 | { | |
834 | rr.s.low = n0; | |
835 | rr.s.high = n1; | |
836 | *rp = rr.ll; | |
837 | } | |
838 | } | |
839 | else | |
840 | { | |
841 | /* 0q = NN / dd */ | |
842 | ||
843 | count_leading_zeros (bm, d1); | |
844 | if (bm == 0) | |
845 | { | |
846 | /* From (n1 >= d1) /\ (the most significant bit of d1 is set), | |
847 | conclude (the most significant bit of n1 is set) /\ (the | |
848 | quotient digit q0 = 0 or 1). | |
849 | ||
850 | This special case is necessary, not an optimization. */ | |
851 | ||
852 | /* The condition on the next line takes advantage of that | |
853 | n1 >= d1 (true due to program flow). */ | |
854 | if (n1 > d1 || n0 >= d0) | |
855 | { | |
856 | q0 = 1; | |
857 | sub_ddmmss (n1, n0, n1, n0, d1, d0); | |
858 | } | |
859 | else | |
860 | q0 = 0; | |
861 | ||
862 | q1 = 0; | |
863 | ||
864 | if (rp != 0) | |
865 | { | |
866 | rr.s.low = n0; | |
867 | rr.s.high = n1; | |
868 | *rp = rr.ll; | |
869 | } | |
870 | } | |
871 | else | |
872 | { | |
996ed075 | 873 | UWtype m1, m0; |
203b91b9 RS |
874 | /* Normalize. */ |
875 | ||
996ed075 | 876 | b = W_TYPE_SIZE - bm; |
203b91b9 RS |
877 | |
878 | d1 = (d1 << bm) | (d0 >> b); | |
879 | d0 = d0 << bm; | |
880 | n2 = n1 >> b; | |
881 | n1 = (n1 << bm) | (n0 >> b); | |
882 | n0 = n0 << bm; | |
883 | ||
884 | udiv_qrnnd (q0, n1, n2, n1, d1); | |
885 | umul_ppmm (m1, m0, q0, d0); | |
886 | ||
887 | if (m1 > n1 || (m1 == n1 && m0 > n0)) | |
888 | { | |
889 | q0--; | |
890 | sub_ddmmss (m1, m0, m1, m0, d1, d0); | |
891 | } | |
892 | ||
893 | q1 = 0; | |
894 | ||
895 | /* Remainder in (n1n0 - m1m0) >> bm. */ | |
896 | if (rp != 0) | |
897 | { | |
898 | sub_ddmmss (n1, n0, n1, n0, m1, m0); | |
899 | rr.s.low = (n1 << b) | (n0 >> bm); | |
900 | rr.s.high = n1 >> bm; | |
901 | *rp = rr.ll; | |
902 | } | |
903 | } | |
904 | } | |
905 | } | |
906 | ||
907 | ww.s.low = q0; | |
908 | ww.s.high = q1; | |
909 | return ww.ll; | |
910 | } | |
911 | #endif | |
912 | ||
913 | #ifdef L_divdi3 | |
996ed075 JJ |
914 | DWtype |
915 | __divdi3 (DWtype u, DWtype v) | |
203b91b9 | 916 | { |
b799cfc3 | 917 | word_type c = 0; |
996ed075 JJ |
918 | DWunion uu, vv; |
919 | DWtype w; | |
203b91b9 RS |
920 | |
921 | uu.ll = u; | |
922 | vv.ll = v; | |
923 | ||
924 | if (uu.s.high < 0) | |
925 | c = ~c, | |
b68daef4 | 926 | uu.ll = -uu.ll; |
203b91b9 RS |
927 | if (vv.s.high < 0) |
928 | c = ~c, | |
b68daef4 | 929 | vv.ll = -vv.ll; |
203b91b9 | 930 | |
996ed075 | 931 | w = __udivmoddi4 (uu.ll, vv.ll, (UDWtype *) 0); |
203b91b9 | 932 | if (c) |
b68daef4 | 933 | w = -w; |
203b91b9 RS |
934 | |
935 | return w; | |
936 | } | |
937 | #endif | |
938 | ||
939 | #ifdef L_moddi3 | |
996ed075 JJ |
940 | DWtype |
941 | __moddi3 (DWtype u, DWtype v) | |
203b91b9 | 942 | { |
b799cfc3 | 943 | word_type c = 0; |
996ed075 JJ |
944 | DWunion uu, vv; |
945 | DWtype w; | |
203b91b9 RS |
946 | |
947 | uu.ll = u; | |
948 | vv.ll = v; | |
949 | ||
950 | if (uu.s.high < 0) | |
951 | c = ~c, | |
b68daef4 | 952 | uu.ll = -uu.ll; |
203b91b9 | 953 | if (vv.s.high < 0) |
b68daef4 | 954 | vv.ll = -vv.ll; |
203b91b9 RS |
955 | |
956 | (void) __udivmoddi4 (uu.ll, vv.ll, &w); | |
957 | if (c) | |
b68daef4 | 958 | w = -w; |
203b91b9 RS |
959 | |
960 | return w; | |
961 | } | |
962 | #endif | |
963 | ||
964 | #ifdef L_umoddi3 | |
996ed075 JJ |
965 | UDWtype |
966 | __umoddi3 (UDWtype u, UDWtype v) | |
203b91b9 | 967 | { |
996ed075 | 968 | UDWtype w; |
203b91b9 RS |
969 | |
970 | (void) __udivmoddi4 (u, v, &w); | |
971 | ||
972 | return w; | |
973 | } | |
974 | #endif | |
975 | ||
976 | #ifdef L_udivdi3 | |
996ed075 JJ |
977 | UDWtype |
978 | __udivdi3 (UDWtype n, UDWtype d) | |
203b91b9 | 979 | { |
996ed075 | 980 | return __udivmoddi4 (n, d, (UDWtype *) 0); |
203b91b9 RS |
981 | } |
982 | #endif | |
983 | \f | |
984 | #ifdef L_cmpdi2 | |
4be7c28f | 985 | word_type |
996ed075 | 986 | __cmpdi2 (DWtype a, DWtype b) |
203b91b9 | 987 | { |
996ed075 | 988 | DWunion au, bu; |
203b91b9 RS |
989 | |
990 | au.ll = a, bu.ll = b; | |
991 | ||
992 | if (au.s.high < bu.s.high) | |
993 | return 0; | |
994 | else if (au.s.high > bu.s.high) | |
995 | return 2; | |
996ed075 | 996 | if ((UWtype) au.s.low < (UWtype) bu.s.low) |
203b91b9 | 997 | return 0; |
996ed075 | 998 | else if ((UWtype) au.s.low > (UWtype) bu.s.low) |
203b91b9 RS |
999 | return 2; |
1000 | return 1; | |
1001 | } | |
1002 | #endif | |
1003 | ||
1004 | #ifdef L_ucmpdi2 | |
4be7c28f | 1005 | word_type |
996ed075 | 1006 | __ucmpdi2 (DWtype a, DWtype b) |
203b91b9 | 1007 | { |
996ed075 | 1008 | DWunion au, bu; |
203b91b9 RS |
1009 | |
1010 | au.ll = a, bu.ll = b; | |
1011 | ||
996ed075 | 1012 | if ((UWtype) au.s.high < (UWtype) bu.s.high) |
203b91b9 | 1013 | return 0; |
996ed075 | 1014 | else if ((UWtype) au.s.high > (UWtype) bu.s.high) |
203b91b9 | 1015 | return 2; |
996ed075 | 1016 | if ((UWtype) au.s.low < (UWtype) bu.s.low) |
203b91b9 | 1017 | return 0; |
996ed075 | 1018 | else if ((UWtype) au.s.low > (UWtype) bu.s.low) |
203b91b9 RS |
1019 | return 2; |
1020 | return 1; | |
1021 | } | |
1022 | #endif | |
1023 | \f | |
eaa4b44c | 1024 | #if defined(L_fixunstfdi) && (LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128) |
996ed075 JJ |
1025 | #define WORD_SIZE (sizeof (Wtype) * BITS_PER_UNIT) |
1026 | #define HIGH_WORD_COEFF (((UDWtype) 1) << WORD_SIZE) | |
ab495388 | 1027 | |
996ed075 | 1028 | DWtype |
6da9c622 | 1029 | __fixunstfDI (TFtype a) |
ab495388 RS |
1030 | { |
1031 | TFtype b; | |
996ed075 | 1032 | UDWtype v; |
ab495388 RS |
1033 | |
1034 | if (a < 0) | |
1035 | return 0; | |
1036 | ||
1037 | /* Compute high word of result, as a flonum. */ | |
1038 | b = (a / HIGH_WORD_COEFF); | |
996ed075 | 1039 | /* Convert that to fixed (but not to DWtype!), |
ab495388 | 1040 | and shift it into the high word. */ |
996ed075 | 1041 | v = (UWtype) b; |
ab495388 RS |
1042 | v <<= WORD_SIZE; |
1043 | /* Remove high part from the TFtype, leaving the low part as flonum. */ | |
1044 | a -= (TFtype)v; | |
996ed075 | 1045 | /* Convert that to fixed (but not to DWtype!) and add it in. |
ab495388 RS |
1046 | Sometimes A comes out negative. This is significant, since |
1047 | A has more bits than a long int does. */ | |
1048 | if (a < 0) | |
996ed075 | 1049 | v -= (UWtype) (- a); |
ab495388 | 1050 | else |
996ed075 | 1051 | v += (UWtype) a; |
ab495388 RS |
1052 | return v; |
1053 | } | |
1054 | #endif | |
1055 | ||
eaa4b44c | 1056 | #if defined(L_fixtfdi) && (LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128) |
996ed075 | 1057 | DWtype |
37ef1054 | 1058 | __fixtfdi (TFtype a) |
ab495388 RS |
1059 | { |
1060 | if (a < 0) | |
6da9c622 RK |
1061 | return - __fixunstfDI (-a); |
1062 | return __fixunstfDI (a); | |
ab495388 RS |
1063 | } |
1064 | #endif | |
1065 | ||
eaa4b44c | 1066 | #if defined(L_fixunsxfdi) && (LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 96) |
996ed075 JJ |
1067 | #define WORD_SIZE (sizeof (Wtype) * BITS_PER_UNIT) |
1068 | #define HIGH_WORD_COEFF (((UDWtype) 1) << WORD_SIZE) | |
e0799b34 | 1069 | |
996ed075 | 1070 | DWtype |
6da9c622 | 1071 | __fixunsxfDI (XFtype a) |
e0799b34 RS |
1072 | { |
1073 | XFtype b; | |
996ed075 | 1074 | UDWtype v; |
e0799b34 RS |
1075 | |
1076 | if (a < 0) | |
1077 | return 0; | |
1078 | ||
1079 | /* Compute high word of result, as a flonum. */ | |
1080 | b = (a / HIGH_WORD_COEFF); | |
996ed075 | 1081 | /* Convert that to fixed (but not to DWtype!), |
e0799b34 | 1082 | and shift it into the high word. */ |
996ed075 | 1083 | v = (UWtype) b; |
e0799b34 RS |
1084 | v <<= WORD_SIZE; |
1085 | /* Remove high part from the XFtype, leaving the low part as flonum. */ | |
1086 | a -= (XFtype)v; | |
996ed075 | 1087 | /* Convert that to fixed (but not to DWtype!) and add it in. |
e0799b34 RS |
1088 | Sometimes A comes out negative. This is significant, since |
1089 | A has more bits than a long int does. */ | |
1090 | if (a < 0) | |
996ed075 | 1091 | v -= (UWtype) (- a); |
e0799b34 | 1092 | else |
996ed075 | 1093 | v += (UWtype) a; |
e0799b34 RS |
1094 | return v; |
1095 | } | |
1096 | #endif | |
1097 | ||
eaa4b44c | 1098 | #if defined(L_fixxfdi) && (LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 96) |
996ed075 | 1099 | DWtype |
37ef1054 | 1100 | __fixxfdi (XFtype a) |
e0799b34 RS |
1101 | { |
1102 | if (a < 0) | |
6da9c622 RK |
1103 | return - __fixunsxfDI (-a); |
1104 | return __fixunsxfDI (a); | |
e0799b34 RS |
1105 | } |
1106 | #endif | |
1107 | ||
203b91b9 | 1108 | #ifdef L_fixunsdfdi |
996ed075 JJ |
1109 | #define WORD_SIZE (sizeof (Wtype) * BITS_PER_UNIT) |
1110 | #define HIGH_WORD_COEFF (((UDWtype) 1) << WORD_SIZE) | |
203b91b9 | 1111 | |
996ed075 | 1112 | DWtype |
6da9c622 | 1113 | __fixunsdfDI (DFtype a) |
203b91b9 | 1114 | { |
4977bab6 | 1115 | UWtype hi, lo; |
203b91b9 | 1116 | |
4977bab6 ZW |
1117 | /* Get high part of result. The division here will just moves the radix |
1118 | point and will not cause any rounding. Then the conversion to integral | |
1119 | type chops result as desired. */ | |
1120 | hi = a / HIGH_WORD_COEFF; | |
203b91b9 | 1121 | |
4977bab6 ZW |
1122 | /* Get low part of result. Convert `hi' to floating type and scale it back, |
1123 | then subtract this from the number being converted. This leaves the low | |
1124 | part. Convert that to integral type. */ | |
1125 | lo = (a - ((DFtype) hi) * HIGH_WORD_COEFF); | |
1126 | ||
1127 | /* Assemble result from the two parts. */ | |
1128 | return ((UDWtype) hi << WORD_SIZE) | lo; | |
203b91b9 RS |
1129 | } |
1130 | #endif | |
1131 | ||
1132 | #ifdef L_fixdfdi | |
996ed075 | 1133 | DWtype |
37ef1054 | 1134 | __fixdfdi (DFtype a) |
203b91b9 RS |
1135 | { |
1136 | if (a < 0) | |
6da9c622 RK |
1137 | return - __fixunsdfDI (-a); |
1138 | return __fixunsdfDI (a); | |
203b91b9 RS |
1139 | } |
1140 | #endif | |
1141 | ||
1142 | #ifdef L_fixunssfdi | |
996ed075 JJ |
1143 | #define WORD_SIZE (sizeof (Wtype) * BITS_PER_UNIT) |
1144 | #define HIGH_WORD_COEFF (((UDWtype) 1) << WORD_SIZE) | |
203b91b9 | 1145 | |
996ed075 | 1146 | DWtype |
6da9c622 | 1147 | __fixunssfDI (SFtype original_a) |
203b91b9 | 1148 | { |
ab495388 | 1149 | /* Convert the SFtype to a DFtype, because that is surely not going |
203b91b9 | 1150 | to lose any bits. Some day someone else can write a faster version |
ab495388 RS |
1151 | that avoids converting to DFtype, and verify it really works right. */ |
1152 | DFtype a = original_a; | |
4977bab6 | 1153 | UWtype hi, lo; |
203b91b9 | 1154 | |
4977bab6 ZW |
1155 | /* Get high part of result. The division here will just moves the radix |
1156 | point and will not cause any rounding. Then the conversion to integral | |
1157 | type chops result as desired. */ | |
1158 | hi = a / HIGH_WORD_COEFF; | |
203b91b9 | 1159 | |
4977bab6 ZW |
1160 | /* Get low part of result. Convert `hi' to floating type and scale it back, |
1161 | then subtract this from the number being converted. This leaves the low | |
1162 | part. Convert that to integral type. */ | |
1163 | lo = (a - ((DFtype) hi) * HIGH_WORD_COEFF); | |
1164 | ||
1165 | /* Assemble result from the two parts. */ | |
1166 | return ((UDWtype) hi << WORD_SIZE) | lo; | |
203b91b9 RS |
1167 | } |
1168 | #endif | |
1169 | ||
1170 | #ifdef L_fixsfdi | |
996ed075 | 1171 | DWtype |
ab495388 | 1172 | __fixsfdi (SFtype a) |
203b91b9 RS |
1173 | { |
1174 | if (a < 0) | |
6da9c622 RK |
1175 | return - __fixunssfDI (-a); |
1176 | return __fixunssfDI (a); | |
203b91b9 RS |
1177 | } |
1178 | #endif | |
1179 | ||
eaa4b44c | 1180 | #if defined(L_floatdixf) && (LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 96) |
996ed075 JJ |
1181 | #define WORD_SIZE (sizeof (Wtype) * BITS_PER_UNIT) |
1182 | #define HIGH_HALFWORD_COEFF (((UDWtype) 1) << (WORD_SIZE / 2)) | |
1183 | #define HIGH_WORD_COEFF (((UDWtype) 1) << WORD_SIZE) | |
e0799b34 RS |
1184 | |
1185 | XFtype | |
996ed075 | 1186 | __floatdixf (DWtype u) |
e0799b34 RS |
1187 | { |
1188 | XFtype d; | |
e0799b34 | 1189 | |
996ed075 | 1190 | d = (Wtype) (u >> WORD_SIZE); |
e0799b34 RS |
1191 | d *= HIGH_HALFWORD_COEFF; |
1192 | d *= HIGH_HALFWORD_COEFF; | |
996ed075 | 1193 | d += (UWtype) (u & (HIGH_WORD_COEFF - 1)); |
e0799b34 | 1194 | |
e5e809f4 | 1195 | return d; |
e0799b34 RS |
1196 | } |
1197 | #endif | |
1198 | ||
eaa4b44c | 1199 | #if defined(L_floatditf) && (LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128) |
996ed075 JJ |
1200 | #define WORD_SIZE (sizeof (Wtype) * BITS_PER_UNIT) |
1201 | #define HIGH_HALFWORD_COEFF (((UDWtype) 1) << (WORD_SIZE / 2)) | |
1202 | #define HIGH_WORD_COEFF (((UDWtype) 1) << WORD_SIZE) | |
ab495388 RS |
1203 | |
1204 | TFtype | |
996ed075 | 1205 | __floatditf (DWtype u) |
ab495388 RS |
1206 | { |
1207 | TFtype d; | |
ab495388 | 1208 | |
996ed075 | 1209 | d = (Wtype) (u >> WORD_SIZE); |
ab495388 RS |
1210 | d *= HIGH_HALFWORD_COEFF; |
1211 | d *= HIGH_HALFWORD_COEFF; | |
996ed075 | 1212 | d += (UWtype) (u & (HIGH_WORD_COEFF - 1)); |
ab495388 | 1213 | |
e5e809f4 | 1214 | return d; |
ab495388 RS |
1215 | } |
1216 | #endif | |
1217 | ||
203b91b9 | 1218 | #ifdef L_floatdidf |
996ed075 JJ |
1219 | #define WORD_SIZE (sizeof (Wtype) * BITS_PER_UNIT) |
1220 | #define HIGH_HALFWORD_COEFF (((UDWtype) 1) << (WORD_SIZE / 2)) | |
1221 | #define HIGH_WORD_COEFF (((UDWtype) 1) << WORD_SIZE) | |
203b91b9 | 1222 | |
ab495388 | 1223 | DFtype |
996ed075 | 1224 | __floatdidf (DWtype u) |
203b91b9 | 1225 | { |
ab495388 | 1226 | DFtype d; |
203b91b9 | 1227 | |
996ed075 | 1228 | d = (Wtype) (u >> WORD_SIZE); |
203b91b9 RS |
1229 | d *= HIGH_HALFWORD_COEFF; |
1230 | d *= HIGH_HALFWORD_COEFF; | |
996ed075 | 1231 | d += (UWtype) (u & (HIGH_WORD_COEFF - 1)); |
203b91b9 | 1232 | |
e5e809f4 | 1233 | return d; |
203b91b9 RS |
1234 | } |
1235 | #endif | |
1236 | ||
1237 | #ifdef L_floatdisf | |
996ed075 JJ |
1238 | #define WORD_SIZE (sizeof (Wtype) * BITS_PER_UNIT) |
1239 | #define HIGH_HALFWORD_COEFF (((UDWtype) 1) << (WORD_SIZE / 2)) | |
1240 | #define HIGH_WORD_COEFF (((UDWtype) 1) << WORD_SIZE) | |
23190837 | 1241 | |
15e5ad76 | 1242 | #define DI_SIZE (sizeof (DWtype) * BITS_PER_UNIT) |
b216cd4a ZW |
1243 | #define DF_SIZE DBL_MANT_DIG |
1244 | #define SF_SIZE FLT_MANT_DIG | |
203b91b9 | 1245 | |
ab495388 | 1246 | SFtype |
996ed075 | 1247 | __floatdisf (DWtype u) |
203b91b9 | 1248 | { |
56b03d5f RS |
1249 | /* Do the calculation in DFmode |
1250 | so that we don't lose any of the precision of the high word | |
1251 | while multiplying it. */ | |
1252 | DFtype f; | |
203b91b9 | 1253 | |
d9e1ab8d RK |
1254 | /* Protect against double-rounding error. |
1255 | Represent any low-order bits, that might be truncated in DFmode, | |
1256 | by a bit that won't be lost. The bit can go in anywhere below the | |
1257 | rounding position of the SFmode. A fixed mask and bit position | |
1258 | handles all usual configurations. It doesn't handle the case | |
1259 | of 128-bit DImode, however. */ | |
1260 | if (DF_SIZE < DI_SIZE | |
1261 | && DF_SIZE > (DI_SIZE - DF_SIZE + SF_SIZE)) | |
1262 | { | |
6da9c622 | 1263 | #define REP_BIT ((UDWtype) 1 << (DI_SIZE - DF_SIZE)) |
996ed075 JJ |
1264 | if (! (- ((DWtype) 1 << DF_SIZE) < u |
1265 | && u < ((DWtype) 1 << DF_SIZE))) | |
d9e1ab8d | 1266 | { |
6da9c622 | 1267 | if ((UDWtype) u & (REP_BIT - 1)) |
cef1c1ba AM |
1268 | { |
1269 | u &= ~ (REP_BIT - 1); | |
1270 | u |= REP_BIT; | |
1271 | } | |
d9e1ab8d RK |
1272 | } |
1273 | } | |
996ed075 | 1274 | f = (Wtype) (u >> WORD_SIZE); |
203b91b9 RS |
1275 | f *= HIGH_HALFWORD_COEFF; |
1276 | f *= HIGH_HALFWORD_COEFF; | |
996ed075 | 1277 | f += (UWtype) (u & (HIGH_WORD_COEFF - 1)); |
203b91b9 | 1278 | |
e5e809f4 | 1279 | return (SFtype) f; |
203b91b9 RS |
1280 | } |
1281 | #endif | |
1282 | ||
eaa4b44c | 1283 | #if defined(L_fixunsxfsi) && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 96 |
3f3d2ec8 JW |
1284 | /* Reenable the normal types, in case limits.h needs them. */ |
1285 | #undef char | |
1286 | #undef short | |
1287 | #undef int | |
1288 | #undef long | |
1289 | #undef unsigned | |
1290 | #undef float | |
1291 | #undef double | |
c07e26bd RK |
1292 | #undef MIN |
1293 | #undef MAX | |
a99598c9 | 1294 | #include <limits.h> |
e0799b34 | 1295 | |
996ed075 | 1296 | UWtype |
6da9c622 | 1297 | __fixunsxfSI (XFtype a) |
e0799b34 | 1298 | { |
5d0e6486 AO |
1299 | if (a >= - (DFtype) Wtype_MIN) |
1300 | return (Wtype) (a + Wtype_MIN) - Wtype_MIN; | |
996ed075 | 1301 | return (Wtype) a; |
e0799b34 RS |
1302 | } |
1303 | #endif | |
1304 | ||
203b91b9 | 1305 | #ifdef L_fixunsdfsi |
3f3d2ec8 JW |
1306 | /* Reenable the normal types, in case limits.h needs them. */ |
1307 | #undef char | |
1308 | #undef short | |
1309 | #undef int | |
1310 | #undef long | |
1311 | #undef unsigned | |
1312 | #undef float | |
1313 | #undef double | |
c07e26bd RK |
1314 | #undef MIN |
1315 | #undef MAX | |
a99598c9 | 1316 | #include <limits.h> |
203b91b9 | 1317 | |
996ed075 | 1318 | UWtype |
6da9c622 | 1319 | __fixunsdfSI (DFtype a) |
203b91b9 | 1320 | { |
5d0e6486 AO |
1321 | if (a >= - (DFtype) Wtype_MIN) |
1322 | return (Wtype) (a + Wtype_MIN) - Wtype_MIN; | |
996ed075 | 1323 | return (Wtype) a; |
203b91b9 RS |
1324 | } |
1325 | #endif | |
1326 | ||
1327 | #ifdef L_fixunssfsi | |
3f3d2ec8 JW |
1328 | /* Reenable the normal types, in case limits.h needs them. */ |
1329 | #undef char | |
1330 | #undef short | |
1331 | #undef int | |
1332 | #undef long | |
1333 | #undef unsigned | |
1334 | #undef float | |
1335 | #undef double | |
c07e26bd RK |
1336 | #undef MIN |
1337 | #undef MAX | |
a99598c9 | 1338 | #include <limits.h> |
203b91b9 | 1339 | |
996ed075 | 1340 | UWtype |
6da9c622 | 1341 | __fixunssfSI (SFtype a) |
203b91b9 | 1342 | { |
5d0e6486 AO |
1343 | if (a >= - (SFtype) Wtype_MIN) |
1344 | return (Wtype) (a + Wtype_MIN) - Wtype_MIN; | |
996ed075 | 1345 | return (Wtype) a; |
203b91b9 RS |
1346 | } |
1347 | #endif | |
1348 | \f | |
ab495388 RS |
1349 | /* From here on down, the routines use normal data types. */ |
1350 | ||
1351 | #define SItype bogus_type | |
1352 | #define USItype bogus_type | |
1353 | #define DItype bogus_type | |
1354 | #define UDItype bogus_type | |
1355 | #define SFtype bogus_type | |
1356 | #define DFtype bogus_type | |
996ed075 JJ |
1357 | #undef Wtype |
1358 | #undef UWtype | |
1359 | #undef HWtype | |
1360 | #undef UHWtype | |
1361 | #undef DWtype | |
1362 | #undef UDWtype | |
ab495388 RS |
1363 | |
1364 | #undef char | |
1365 | #undef short | |
1366 | #undef int | |
1367 | #undef long | |
1368 | #undef unsigned | |
1369 | #undef float | |
1370 | #undef double | |
9bd23d2c RS |
1371 | \f |
1372 | #ifdef L__gcc_bcmp | |
1373 | ||
1374 | /* Like bcmp except the sign is meaningful. | |
9faa82d8 | 1375 | Result is negative if S1 is less than S2, |
9bd23d2c RS |
1376 | positive if S1 is greater, 0 if S1 and S2 are equal. */ |
1377 | ||
1378 | int | |
299b83b7 | 1379 | __gcc_bcmp (const unsigned char *s1, const unsigned char *s2, size_t size) |
9bd23d2c RS |
1380 | { |
1381 | while (size > 0) | |
1382 | { | |
78e33213 | 1383 | unsigned char c1 = *s1++, c2 = *s2++; |
9bd23d2c RS |
1384 | if (c1 != c2) |
1385 | return c1 - c2; | |
1386 | size--; | |
1387 | } | |
1388 | return 0; | |
1389 | } | |
ab495388 | 1390 | |
3fe68d0a ZW |
1391 | #endif |
1392 | \f | |
1393 | /* __eprintf used to be used by GCC's private version of <assert.h>. | |
1394 | We no longer provide that header, but this routine remains in libgcc.a | |
1395 | for binary backward compatibility. Note that it is not included in | |
1396 | the shared version of libgcc. */ | |
1397 | #ifdef L_eprintf | |
1398 | #ifndef inhibit_libc | |
1399 | ||
1400 | #undef NULL /* Avoid errors if stdio.h and our stddef.h mismatch. */ | |
1401 | #include <stdio.h> | |
1402 | ||
1403 | void | |
1404 | __eprintf (const char *string, const char *expression, | |
1405 | unsigned int line, const char *filename) | |
1406 | { | |
1407 | fprintf (stderr, string, expression, line, filename); | |
1408 | fflush (stderr); | |
1409 | abort (); | |
1410 | } | |
1411 | ||
1412 | #endif | |
203b91b9 RS |
1413 | #endif |
1414 | ||
203b91b9 | 1415 | \f |
203b91b9 RS |
1416 | #ifdef L_clear_cache |
1417 | /* Clear part of an instruction cache. */ | |
1418 | ||
1419 | #define INSN_CACHE_PLANE_SIZE (INSN_CACHE_SIZE / INSN_CACHE_DEPTH) | |
1420 | ||
1421 | void | |
139fa6f8 MM |
1422 | __clear_cache (char *beg __attribute__((__unused__)), |
1423 | char *end __attribute__((__unused__))) | |
203b91b9 | 1424 | { |
23190837 | 1425 | #ifdef CLEAR_INSN_CACHE |
e1178973 KKT |
1426 | CLEAR_INSN_CACHE (beg, end); |
1427 | #else | |
203b91b9 RS |
1428 | #ifdef INSN_CACHE_SIZE |
1429 | static char array[INSN_CACHE_SIZE + INSN_CACHE_PLANE_SIZE + INSN_CACHE_LINE_WIDTH]; | |
7e6f1890 | 1430 | static int initialized; |
203b91b9 | 1431 | int offset; |
b6422cca RS |
1432 | void *start_addr |
1433 | void *end_addr; | |
3e7d8ef1 | 1434 | typedef (*function_ptr) (void); |
203b91b9 RS |
1435 | |
1436 | #if (INSN_CACHE_SIZE / INSN_CACHE_LINE_WIDTH) < 16 | |
1437 | /* It's cheaper to clear the whole cache. | |
1438 | Put in a series of jump instructions so that calling the beginning | |
1439 | of the cache will clear the whole thing. */ | |
1440 | ||
1441 | if (! initialized) | |
1442 | { | |
1443 | int ptr = (((int) array + INSN_CACHE_LINE_WIDTH - 1) | |
1444 | & -INSN_CACHE_LINE_WIDTH); | |
1445 | int end_ptr = ptr + INSN_CACHE_SIZE; | |
1446 | ||
1447 | while (ptr < end_ptr) | |
1448 | { | |
1449 | *(INSTRUCTION_TYPE *)ptr | |
1450 | = JUMP_AHEAD_INSTRUCTION + INSN_CACHE_LINE_WIDTH; | |
1451 | ptr += INSN_CACHE_LINE_WIDTH; | |
1452 | } | |
0f41302f | 1453 | *(INSTRUCTION_TYPE *) (ptr - INSN_CACHE_LINE_WIDTH) = RETURN_INSTRUCTION; |
203b91b9 RS |
1454 | |
1455 | initialized = 1; | |
1456 | } | |
1457 | ||
1458 | /* Call the beginning of the sequence. */ | |
1459 | (((function_ptr) (((int) array + INSN_CACHE_LINE_WIDTH - 1) | |
1460 | & -INSN_CACHE_LINE_WIDTH)) | |
1461 | ()); | |
1462 | ||
1463 | #else /* Cache is large. */ | |
1464 | ||
1465 | if (! initialized) | |
1466 | { | |
1467 | int ptr = (((int) array + INSN_CACHE_LINE_WIDTH - 1) | |
1468 | & -INSN_CACHE_LINE_WIDTH); | |
1469 | ||
1470 | while (ptr < (int) array + sizeof array) | |
1471 | { | |
1472 | *(INSTRUCTION_TYPE *)ptr = RETURN_INSTRUCTION; | |
1473 | ptr += INSN_CACHE_LINE_WIDTH; | |
1474 | } | |
1475 | ||
1476 | initialized = 1; | |
1477 | } | |
1478 | ||
1479 | /* Find the location in array that occupies the same cache line as BEG. */ | |
1480 | ||
1481 | offset = ((int) beg & -INSN_CACHE_LINE_WIDTH) & (INSN_CACHE_PLANE_SIZE - 1); | |
1482 | start_addr = (((int) (array + INSN_CACHE_PLANE_SIZE - 1) | |
1483 | & -INSN_CACHE_PLANE_SIZE) | |
1484 | + offset); | |
1485 | ||
1486 | /* Compute the cache alignment of the place to stop clearing. */ | |
1487 | #if 0 /* This is not needed for gcc's purposes. */ | |
1488 | /* If the block to clear is bigger than a cache plane, | |
23190837 | 1489 | we clear the entire cache, and OFFSET is already correct. */ |
203b91b9 RS |
1490 | if (end < beg + INSN_CACHE_PLANE_SIZE) |
1491 | #endif | |
1492 | offset = (((int) (end + INSN_CACHE_LINE_WIDTH - 1) | |
1493 | & -INSN_CACHE_LINE_WIDTH) | |
1494 | & (INSN_CACHE_PLANE_SIZE - 1)); | |
1495 | ||
1496 | #if INSN_CACHE_DEPTH > 1 | |
1497 | end_addr = (start_addr & -INSN_CACHE_PLANE_SIZE) + offset; | |
1498 | if (end_addr <= start_addr) | |
1499 | end_addr += INSN_CACHE_PLANE_SIZE; | |
1500 | ||
1501 | for (plane = 0; plane < INSN_CACHE_DEPTH; plane++) | |
1502 | { | |
1503 | int addr = start_addr + plane * INSN_CACHE_PLANE_SIZE; | |
1504 | int stop = end_addr + plane * INSN_CACHE_PLANE_SIZE; | |
1505 | ||
1506 | while (addr != stop) | |
1507 | { | |
1508 | /* Call the return instruction at ADDR. */ | |
1509 | ((function_ptr) addr) (); | |
1510 | ||
1511 | addr += INSN_CACHE_LINE_WIDTH; | |
1512 | } | |
1513 | } | |
1514 | #else /* just one plane */ | |
1515 | do | |
1516 | { | |
1517 | /* Call the return instruction at START_ADDR. */ | |
1518 | ((function_ptr) start_addr) (); | |
1519 | ||
1520 | start_addr += INSN_CACHE_LINE_WIDTH; | |
1521 | } | |
1522 | while ((start_addr % INSN_CACHE_SIZE) != offset); | |
1523 | #endif /* just one plane */ | |
1524 | #endif /* Cache is large */ | |
1525 | #endif /* Cache exists */ | |
e1178973 | 1526 | #endif /* CLEAR_INSN_CACHE */ |
203b91b9 RS |
1527 | } |
1528 | ||
1529 | #endif /* L_clear_cache */ | |
1530 | \f | |
1531 | #ifdef L_trampoline | |
1532 | ||
1533 | /* Jump to a trampoline, loading the static chain address. */ | |
1534 | ||
b27d2bd5 | 1535 | #if defined(WINNT) && ! defined(__CYGWIN__) && ! defined (_UWIN) |
e3367a77 | 1536 | |
3e7d8ef1 KG |
1537 | long |
1538 | getpagesize (void) | |
f5ea9817 RK |
1539 | { |
1540 | #ifdef _ALPHA_ | |
1541 | return 8192; | |
1542 | #else | |
1543 | return 4096; | |
1544 | #endif | |
1545 | } | |
1546 | ||
d7ebf9ea | 1547 | #ifdef __i386__ |
e4b15106 RK |
1548 | extern int VirtualProtect (char *, int, int, int *) __attribute__((stdcall)); |
1549 | #endif | |
1550 | ||
272e2587 RK |
1551 | int |
1552 | mprotect (char *addr, int len, int prot) | |
f5ea9817 RK |
1553 | { |
1554 | int np, op; | |
1555 | ||
272e2587 RK |
1556 | if (prot == 7) |
1557 | np = 0x40; | |
1558 | else if (prot == 5) | |
1559 | np = 0x20; | |
1560 | else if (prot == 4) | |
1561 | np = 0x10; | |
1562 | else if (prot == 3) | |
1563 | np = 0x04; | |
1564 | else if (prot == 1) | |
1565 | np = 0x02; | |
1566 | else if (prot == 0) | |
1567 | np = 0x01; | |
f5ea9817 RK |
1568 | |
1569 | if (VirtualProtect (addr, len, np, &op)) | |
1570 | return 0; | |
1571 | else | |
1572 | return -1; | |
f5ea9817 RK |
1573 | } |
1574 | ||
b27d2bd5 | 1575 | #endif /* WINNT && ! __CYGWIN__ && ! _UWIN */ |
f5ea9817 | 1576 | |
23190837 AJ |
1577 | #ifdef TRANSFER_FROM_TRAMPOLINE |
1578 | TRANSFER_FROM_TRAMPOLINE | |
203b91b9 RS |
1579 | #endif |
1580 | ||
c85f7c16 JL |
1581 | #ifdef __sysV68__ |
1582 | ||
1583 | #include <sys/signal.h> | |
1584 | #include <errno.h> | |
1585 | ||
1586 | /* Motorola forgot to put memctl.o in the libp version of libc881.a, | |
1587 | so define it here, because we need it in __clear_insn_cache below */ | |
3698f44e MH |
1588 | /* On older versions of this OS, no memctl or MCT_TEXT are defined; |
1589 | hence we enable this stuff only if MCT_TEXT is #define'd. */ | |
c85f7c16 | 1590 | |
3698f44e | 1591 | #ifdef MCT_TEXT |
c85f7c16 JL |
1592 | asm("\n\ |
1593 | global memctl\n\ | |
1594 | memctl:\n\ | |
1595 | movq &75,%d0\n\ | |
1596 | trap &0\n\ | |
1597 | bcc.b noerror\n\ | |
1598 | jmp cerror%\n\ | |
1599 | noerror:\n\ | |
1600 | movq &0,%d0\n\ | |
1601 | rts"); | |
3698f44e | 1602 | #endif |
c85f7c16 JL |
1603 | |
1604 | /* Clear instruction cache so we can call trampolines on stack. | |
1605 | This is called from FINALIZE_TRAMPOLINE in mot3300.h. */ | |
1606 | ||
1607 | void | |
3e7d8ef1 | 1608 | __clear_insn_cache (void) |
c85f7c16 | 1609 | { |
3698f44e | 1610 | #ifdef MCT_TEXT |
c85f7c16 JL |
1611 | int save_errno; |
1612 | ||
1613 | /* Preserve errno, because users would be surprised to have | |
dc297297 | 1614 | errno changing without explicitly calling any system-call. */ |
c85f7c16 JL |
1615 | save_errno = errno; |
1616 | ||
23190837 | 1617 | /* Keep it simple : memctl (MCT_TEXT) always fully clears the insn cache. |
dc297297 | 1618 | No need to use an address derived from _start or %sp, as 0 works also. */ |
c85f7c16 JL |
1619 | memctl(0, 4096, MCT_TEXT); |
1620 | errno = save_errno; | |
3698f44e | 1621 | #endif |
c85f7c16 JL |
1622 | } |
1623 | ||
1624 | #endif /* __sysV68__ */ | |
203b91b9 RS |
1625 | #endif /* L_trampoline */ |
1626 | \f | |
cae21ae8 | 1627 | #ifndef __CYGWIN__ |
203b91b9 RS |
1628 | #ifdef L__main |
1629 | ||
1630 | #include "gbl-ctors.h" | |
c06cff95 RS |
1631 | /* Some systems use __main in a way incompatible with its use in gcc, in these |
1632 | cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to | |
1633 | give the same symbol without quotes for an alternative entry point. You | |
0f41302f | 1634 | must define both, or neither. */ |
c06cff95 RS |
1635 | #ifndef NAME__MAIN |
1636 | #define NAME__MAIN "__main" | |
1637 | #define SYMBOL__MAIN __main | |
1638 | #endif | |
203b91b9 | 1639 | |
fe1fd353 JM |
1640 | #ifdef INIT_SECTION_ASM_OP |
1641 | #undef HAS_INIT_SECTION | |
1642 | #define HAS_INIT_SECTION | |
1643 | #endif | |
1644 | ||
1645 | #if !defined (HAS_INIT_SECTION) || !defined (OBJECT_FORMAT_ELF) | |
31cf0144 JM |
1646 | |
1647 | /* Some ELF crosses use crtstuff.c to provide __CTOR_LIST__, but use this | |
1648 | code to run constructors. In that case, we need to handle EH here, too. */ | |
1649 | ||
540ceb67 | 1650 | #ifdef EH_FRAME_SECTION_NAME |
e4b776a6 | 1651 | #include "unwind-dw2-fde.h" |
31cf0144 JM |
1652 | extern unsigned char __EH_FRAME_BEGIN__[]; |
1653 | #endif | |
1654 | ||
203b91b9 RS |
1655 | /* Run all the global destructors on exit from the program. */ |
1656 | ||
1657 | void | |
3e7d8ef1 | 1658 | __do_global_dtors (void) |
203b91b9 | 1659 | { |
89cf554b RS |
1660 | #ifdef DO_GLOBAL_DTORS_BODY |
1661 | DO_GLOBAL_DTORS_BODY; | |
1662 | #else | |
b40b9d93 MS |
1663 | static func_ptr *p = __DTOR_LIST__ + 1; |
1664 | while (*p) | |
1665 | { | |
1666 | p++; | |
1667 | (*(p-1)) (); | |
1668 | } | |
89cf554b | 1669 | #endif |
540ceb67 | 1670 | #if defined (EH_FRAME_SECTION_NAME) && !defined (HAS_INIT_SECTION) |
a4ebb0e6 GRK |
1671 | { |
1672 | static int completed = 0; | |
1673 | if (! completed) | |
1674 | { | |
1675 | completed = 1; | |
1676 | __deregister_frame_info (__EH_FRAME_BEGIN__); | |
1677 | } | |
1678 | } | |
31cf0144 | 1679 | #endif |
203b91b9 | 1680 | } |
68d69835 | 1681 | #endif |
203b91b9 | 1682 | |
fe1fd353 | 1683 | #ifndef HAS_INIT_SECTION |
203b91b9 RS |
1684 | /* Run all the global constructors on entry to the program. */ |
1685 | ||
203b91b9 | 1686 | void |
3e7d8ef1 | 1687 | __do_global_ctors (void) |
203b91b9 | 1688 | { |
540ceb67 | 1689 | #ifdef EH_FRAME_SECTION_NAME |
31cf0144 JM |
1690 | { |
1691 | static struct object object; | |
1692 | __register_frame_info (__EH_FRAME_BEGIN__, &object); | |
1693 | } | |
1694 | #endif | |
203b91b9 | 1695 | DO_GLOBAL_CTORS_BODY; |
a218d5ba | 1696 | atexit (__do_global_dtors); |
203b91b9 | 1697 | } |
fe1fd353 | 1698 | #endif /* no HAS_INIT_SECTION */ |
203b91b9 | 1699 | |
fe1fd353 | 1700 | #if !defined (HAS_INIT_SECTION) || defined (INVOKE__main) |
203b91b9 RS |
1701 | /* Subroutine called automatically by `main'. |
1702 | Compiling a global function named `main' | |
1703 | produces an automatic call to this function at the beginning. | |
1704 | ||
1705 | For many systems, this routine calls __do_global_ctors. | |
1706 | For systems which support a .init section we use the .init section | |
1707 | to run __do_global_ctors, so we need not do anything here. */ | |
1708 | ||
1709 | void | |
c06cff95 | 1710 | SYMBOL__MAIN () |
203b91b9 RS |
1711 | { |
1712 | /* Support recursive calls to `main': run initializers just once. */ | |
7e6f1890 | 1713 | static int initialized; |
203b91b9 RS |
1714 | if (! initialized) |
1715 | { | |
1716 | initialized = 1; | |
1717 | __do_global_ctors (); | |
1718 | } | |
1719 | } | |
fe1fd353 | 1720 | #endif /* no HAS_INIT_SECTION or INVOKE__main */ |
203b91b9 RS |
1721 | |
1722 | #endif /* L__main */ | |
cae21ae8 | 1723 | #endif /* __CYGWIN__ */ |
203b91b9 | 1724 | \f |
ad38743d | 1725 | #ifdef L_ctors |
203b91b9 RS |
1726 | |
1727 | #include "gbl-ctors.h" | |
1728 | ||
1729 | /* Provide default definitions for the lists of constructors and | |
657be7af JL |
1730 | destructors, so that we don't get linker errors. These symbols are |
1731 | intentionally bss symbols, so that gld and/or collect will provide | |
1732 | the right values. */ | |
203b91b9 RS |
1733 | |
1734 | /* We declare the lists here with two elements each, | |
657be7af JL |
1735 | so that they are valid empty lists if no other definition is loaded. |
1736 | ||
1737 | If we are using the old "set" extensions to have the gnu linker | |
1738 | collect ctors and dtors, then we __CTOR_LIST__ and __DTOR_LIST__ | |
1739 | must be in the bss/common section. | |
1740 | ||
1741 | Long term no port should use those extensions. But many still do. */ | |
b335c2cc | 1742 | #if !defined(INIT_SECTION_ASM_OP) && !defined(CTOR_LISTS_DEFINED_EXTERNALLY) |
aa6ad1a6 | 1743 | #if defined (TARGET_ASM_CONSTRUCTOR) || defined (USE_COLLECT2) |
d15d0264 RS |
1744 | func_ptr __CTOR_LIST__[2] = {0, 0}; |
1745 | func_ptr __DTOR_LIST__[2] = {0, 0}; | |
657be7af JL |
1746 | #else |
1747 | func_ptr __CTOR_LIST__[2]; | |
1748 | func_ptr __DTOR_LIST__[2]; | |
1749 | #endif | |
b335c2cc | 1750 | #endif /* no INIT_SECTION_ASM_OP and not CTOR_LISTS_DEFINED_EXTERNALLY */ |
ad38743d RS |
1751 | #endif /* L_ctors */ |
1752 | \f | |
1753 | #ifdef L_exit | |
1754 | ||
1755 | #include "gbl-ctors.h" | |
203b91b9 | 1756 | |
8b7677be | 1757 | #ifdef NEED_ATEXIT |
8b7677be | 1758 | |
f75e8946 | 1759 | #ifndef ON_EXIT |
203b91b9 | 1760 | |
8b7677be RK |
1761 | # include <errno.h> |
1762 | ||
920b13cc | 1763 | static func_ptr *atexit_chain = 0; |
8b7677be RK |
1764 | static long atexit_chain_length = 0; |
1765 | static volatile long last_atexit_chain_slot = -1; | |
1766 | ||
c063dc98 JM |
1767 | int |
1768 | atexit (func_ptr func) | |
8b7677be RK |
1769 | { |
1770 | if (++last_atexit_chain_slot == atexit_chain_length) | |
1771 | { | |
1772 | atexit_chain_length += 32; | |
1773 | if (atexit_chain) | |
a25cea96 RK |
1774 | atexit_chain = (func_ptr *) realloc (atexit_chain, atexit_chain_length |
1775 | * sizeof (func_ptr)); | |
8b7677be | 1776 | else |
a25cea96 RK |
1777 | atexit_chain = (func_ptr *) malloc (atexit_chain_length |
1778 | * sizeof (func_ptr)); | |
8b7677be RK |
1779 | if (! atexit_chain) |
1780 | { | |
1781 | atexit_chain_length = 0; | |
1782 | last_atexit_chain_slot = -1; | |
1783 | errno = ENOMEM; | |
1784 | return (-1); | |
1785 | } | |
1786 | } | |
1787 | atexit_chain[last_atexit_chain_slot] = func; | |
1788 | return (0); | |
1789 | } | |
8b7677be | 1790 | |
3e7d8ef1 KG |
1791 | extern void _cleanup (void); |
1792 | extern void _exit (int) __attribute__ ((__noreturn__)); | |
203b91b9 | 1793 | |
23190837 | 1794 | void |
37ef1054 | 1795 | exit (int status) |
203b91b9 | 1796 | { |
8b7677be RK |
1797 | if (atexit_chain) |
1798 | { | |
1799 | for ( ; last_atexit_chain_slot-- >= 0; ) | |
1800 | { | |
1801 | (*atexit_chain[last_atexit_chain_slot + 1]) (); | |
920b13cc | 1802 | atexit_chain[last_atexit_chain_slot + 1] = 0; |
8b7677be RK |
1803 | } |
1804 | free (atexit_chain); | |
920b13cc | 1805 | atexit_chain = 0; |
8b7677be | 1806 | } |
203b91b9 RS |
1807 | #ifdef EXIT_BODY |
1808 | EXIT_BODY; | |
1809 | #else | |
1810 | _cleanup (); | |
1811 | #endif | |
1812 | _exit (status); | |
1813 | } | |
1814 | ||
f75e8946 | 1815 | #else /* ON_EXIT */ |
bceb30e7 | 1816 | |
c063dc98 JM |
1817 | /* Simple; we just need a wrapper for ON_EXIT. */ |
1818 | int | |
1819 | atexit (func_ptr func) | |
bceb30e7 | 1820 | { |
c063dc98 | 1821 | return ON_EXIT (func); |
bceb30e7 | 1822 | } |
c063dc98 | 1823 | |
f75e8946 | 1824 | #endif /* ON_EXIT */ |
c063dc98 | 1825 | #endif /* NEED_ATEXIT */ |
203b91b9 RS |
1826 | |
1827 | #endif /* L_exit */ |