2 * special support for eabi
4 * Copyright (C) 1995, 1996 Free Software Foundation, Inc.
5 * Written By Michael Meissner
7 * This file is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2, or (at your option) any
12 * In addition to the permissions in the GNU General Public License, the
13 * Free Software Foundation gives you unlimited permission to link the
14 * compiled version of this file with other programs, and to distribute
15 * those programs without any restriction coming from the use of this
16 * file. (The General Public License restrictions do apply in other
17 * respects; for example, they cover modification of the file, and
18 * distribution when not linked into another program.)
20 * This file is distributed in the hope that it will be useful, but
21 * WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
23 * General Public License for more details.
25 * You should have received a copy of the GNU General Public License
26 * along with this program; see the file COPYING. If not, write to
27 * the Free Software Foundation, 59 Temple Place - Suite 330,
28 * Boston, MA 02111-1307, USA.
30 * As a special exception, if you link this library with files
31 * compiled with GCC to produce an executable, this does not cause
32 * the resulting executable to be covered by the GNU General Public License.
33 * This exception does not however invalidate any other reasons why
34 * the executable file might be covered by the GNU General Public License.
37 /* Do any initializations needed for the eabi environment */
44 .LCTOC1 = . /* +32768 */
46 /* Table of addresses */
48 .long .LCTOC1 /* address we are really at */
51 .long _GLOBAL_OFFSET_TABLE_ /* normal GOT address */
54 .long __GOT_START__ /* start of .got section */
57 .long __GOT_END__ /* end of .got section */
60 .long __GOT2_START__ /* -mrelocatable GOT pointers start */
63 .long __GOT2_END__ /* -mrelocatable GOT pointers end */
66 .long __FIXUP_START__ /* start of .fixup section */
69 .long __FIXUP_END__ /* end of .fixup section */
72 .long __CTOR_LIST__ /* start of .ctor section */
75 .long __CTOR_END__ /* end of .ctor section */
78 .long __DTOR_LIST__ /* start of .dtor section */
81 .long __DTOR_END__ /* end of .dtor section */
84 .long .Linit_p /* address of variable to say we've been called */
92 .long .LCTOC1-.Laddr /* PC relative pointer to .got2 */
96 bl .Laddr /* get current address */
98 mflr 12 /* real address of .Laddr */
99 lwz 11,(.Lptr-.Laddr)(12) /* linker generated address of .LCTOC1 */
100 add 11,11,12 /* correct to real pointer */
101 lwz 12,.Ltable(11) /* get linker's idea of where .Laddr is */
102 lwz 10,.Linit(11) /* address of init flag */
103 subf. 12,12,11 /* calculate difference */
104 mtlr 0 /* restore link register */
105 lwzx 9,10,12 /* done flag */
106 cmplwi 2,9,0 /* init flag != 0? */
107 bnelr 2 /* return now, if we've been called already */
108 stwx 1,10,12 /* store a non-zero value in the done flag */
109 bne 0,.Lreloc /* skip if we need to relocate */
111 /* Only load up register 2 if there is a .got section */
113 lwz 3,.Lgots(11) /* start of .got section */
114 lwz 4,.Lgote(11) /* end of .got section */
115 cmpw 1,3,4 /* .got section non-empty? */
118 /* Normal program, load up register 2 */
120 lwz 2,.Lgot(11) /* normal GOT address (obsolete in register 2) */
121 mr 13,2 /* also same as _SDA_BASE_ (V.4 small data ptr) */
122 b FUNC_NAME(__do_global_ctors) /* do any C++ global constructors (which returns to caller) */
124 /* We need to relocate the .got2 pointers. Don't load register 2 */
127 lwz 3,.Lgot2s(11) /* GOT pointers start */
128 lwz 4,.Lgot2e(11) /* GOT pointers end */
129 add 3,12,3 /* adjust pointers */
132 cmpw 1,3,4 /* any pointers to adjust */
136 lwz 5,0(3) /* next pointer */
137 add 5,5,12 /* adjust */
139 addi 3,3,4 /* bump to next word */
140 cmpw 1,3,4 /* more pointers to adjust? */
143 /* Fixup the .ctor section for static constructors */
146 lwz 3,.Lctors(11) /* constructors pointers start */
147 lwz 4,.Lctore(11) /* constructors pointers end */
149 cmpw 1,3,4 /* any pointers to adjust */
153 lwz 5,0(3) /* next pointer */
154 add 5,5,12 /* adjust */
156 addi 3,3,4 /* bump to next word */
157 cmpw 1,3,4 /* more pointers to adjust? */
160 /* Fixup the .dtor section for static destructors */
163 lwz 3,.Ldtors(11) /* destructors pointers start */
164 lwz 4,.Ldtore(11) /* destructors pointers end */
166 cmpw 1,3,4 /* any pointers to adjust */
170 lwz 5,0(3) /* next pointer */
171 add 5,5,12 /* adjust */
173 addi 3,3,4 /* bump to next word */
174 cmpw 1,3,4 /* more pointers to adjust? */
177 /* Fixup any user initialized pointers now (the compiler drops pointers to */
178 /* each of the relocs that it does in the .fixup section). */
181 lwz 3,.Lfixups(11) /* fixup pointers start */
182 lwz 4,.Lfixupe(11) /* fixup pointers end */
184 cmpw 1,3,4 /* any user pointers to adjust */
188 lwz 5,0(3) /* next pointer */
189 add 5,5,12 /* adjust pointer */
190 lwz 6,0(5) /* get the pointer it points to */
191 stw 5,0(3) /* store adjusted pointer */
192 add 6,6,12 /* adjust */
194 addi 3,3,4 /* bump to next word */
195 cmpw 1,3,4 /* more pointers to adjust? */
198 /* Done adjusting pointers, return */
201 b FUNC_NAME(__do_global_ctors) /* do any C++ global constructors (which returns to caller) */
204 /* Routines for saving floating point registers, called by the compiler. */
205 /* Called with r11 pointing to the stack header word of the caller of the */
206 /* function, just beyond the end of the floating point save area. */
208 FUNC_START(_savefpr_14) stfd 14,-144(11) /* save fp registers */
209 FUNC_START(_savefpr_15) stfd 15,-136(11)
210 FUNC_START(_savefpr_16) stfd 16,-128(11)
211 FUNC_START(_savefpr_17) stfd 17,-120(11)
212 FUNC_START(_savefpr_18) stfd 18,-112(11)
213 FUNC_START(_savefpr_19) stfd 19,-104(11)
214 FUNC_START(_savefpr_20) stfd 20,-96(11)
215 FUNC_START(_savefpr_21) stfd 21,-88(11)
216 FUNC_START(_savefpr_22) stfd 22,-80(11)
217 FUNC_START(_savefpr_23) stfd 23,-72(11)
218 FUNC_START(_savefpr_24) stfd 24,-64(11)
219 FUNC_START(_savefpr_25) stfd 25,-56(11)
220 FUNC_START(_savefpr_26) stfd 26,-48(11)
221 FUNC_START(_savefpr_27) stfd 27,-40(11)
222 FUNC_START(_savefpr_28) stfd 28,-32(11)
223 FUNC_START(_savefpr_29) stfd 29,-24(11)
224 FUNC_START(_savefpr_30) stfd 30,-16(11)
225 FUNC_START(_savefpr_31) stfd 31,-8(11)
227 FUNC_END(_savefpr_31)
228 FUNC_END(_savefpr_30)
229 FUNC_END(_savefpr_29)
230 FUNC_END(_savefpr_28)
231 FUNC_END(_savefpr_27)
232 FUNC_END(_savefpr_26)
233 FUNC_END(_savefpr_25)
234 FUNC_END(_savefpr_24)
235 FUNC_END(_savefpr_23)
236 FUNC_END(_savefpr_22)
237 FUNC_END(_savefpr_21)
238 FUNC_END(_savefpr_20)
239 FUNC_END(_savefpr_19)
240 FUNC_END(_savefpr_18)
241 FUNC_END(_savefpr_17)
242 FUNC_END(_savefpr_16)
243 FUNC_END(_savefpr_15)
244 FUNC_END(_savefpr_14)
246 /* Routines for saving integer registers, called by the compiler. */
247 /* Called with r11 pointing to the stack header word of the caller of the */
248 /* function, just beyond the end of the integer save area. */
250 FUNC_START(_savegpr_14) stw 14,-72(11) /* save gp registers */
251 FUNC_START(_savegpr_15) stw 15,-68(11)
252 FUNC_START(_savegpr_16) stw 16,-64(11)
253 FUNC_START(_savegpr_17) stw 17,-60(11)
254 FUNC_START(_savegpr_18) stw 18,-56(11)
255 FUNC_START(_savegpr_19) stw 19,-52(11)
256 FUNC_START(_savegpr_20) stw 20,-48(11)
257 FUNC_START(_savegpr_21) stw 21,-44(11)
258 FUNC_START(_savegpr_22) stw 22,-40(11)
259 FUNC_START(_savegpr_23) stw 23,-36(11)
260 FUNC_START(_savegpr_24) stw 24,-32(11)
261 FUNC_START(_savegpr_25) stw 25,-28(11)
262 FUNC_START(_savegpr_26) stw 26,-24(11)
263 FUNC_START(_savegpr_27) stw 27,-20(11)
264 FUNC_START(_savegpr_28) stw 28,-16(11)
265 FUNC_START(_savegpr_29) stw 29,-12(11)
266 FUNC_START(_savegpr_30) stw 30,-8(11)
267 FUNC_START(_savegpr_31) stw 31,-4(11)
269 FUNC_END(_savegpr_31)
270 FUNC_END(_savegpr_30)
271 FUNC_END(_savegpr_29)
272 FUNC_END(_savegpr_28)
273 FUNC_END(_savegpr_27)
274 FUNC_END(_savegpr_26)
275 FUNC_END(_savegpr_25)
276 FUNC_END(_savegpr_24)
277 FUNC_END(_savegpr_23)
278 FUNC_END(_savegpr_22)
279 FUNC_END(_savegpr_21)
280 FUNC_END(_savegpr_20)
281 FUNC_END(_savegpr_19)
282 FUNC_END(_savegpr_18)
283 FUNC_END(_savegpr_17)
284 FUNC_END(_savegpr_16)
285 FUNC_END(_savegpr_15)
286 FUNC_END(_savegpr_14)
288 /* Routines for restoring floating point registers, called by the compiler. */
289 /* Called with r11 pointing to the stack header word of the caller of the */
290 /* function, just beyond the end of the floating point save area. */
292 FUNC_START(_restfpr_14) lfd 14,-144(11) /* restore fp registers */
293 FUNC_START(_restfpr_15) lfd 15,-136(11)
294 FUNC_START(_restfpr_16) lfd 16,-128(11)
295 FUNC_START(_restfpr_17) lfd 17,-120(11)
296 FUNC_START(_restfpr_18) lfd 18,-112(11)
297 FUNC_START(_restfpr_19) lfd 19,-104(11)
298 FUNC_START(_restfpr_20) lfd 20,-96(11)
299 FUNC_START(_restfpr_21) lfd 21,-88(11)
300 FUNC_START(_restfpr_22) lfd 22,-80(11)
301 FUNC_START(_restfpr_23) lfd 23,-72(11)
302 FUNC_START(_restfpr_24) lfd 24,-64(11)
303 FUNC_START(_restfpr_25) lfd 25,-56(11)
304 FUNC_START(_restfpr_26) lfd 26,-48(11)
305 FUNC_START(_restfpr_27) lfd 27,-40(11)
306 FUNC_START(_restfpr_28) lfd 28,-32(11)
307 FUNC_START(_restfpr_29) lfd 29,-24(11)
308 FUNC_START(_restfpr_30) lfd 30,-16(11)
309 FUNC_START(_restfpr_31) lfd 31,-8(11)
311 FUNC_END(_restfpr_31)
312 FUNC_END(_restfpr_30)
313 FUNC_END(_restfpr_29)
314 FUNC_END(_restfpr_28)
315 FUNC_END(_restfpr_27)
316 FUNC_END(_restfpr_26)
317 FUNC_END(_restfpr_25)
318 FUNC_END(_restfpr_24)
319 FUNC_END(_restfpr_23)
320 FUNC_END(_restfpr_22)
321 FUNC_END(_restfpr_21)
322 FUNC_END(_restfpr_20)
323 FUNC_END(_restfpr_19)
324 FUNC_END(_restfpr_18)
325 FUNC_END(_restfpr_17)
326 FUNC_END(_restfpr_16)
327 FUNC_END(_restfpr_15)
328 FUNC_END(_restfpr_14)
330 /* Routines for restoring integer registers, called by the compiler. */
331 /* Called with r11 pointing to the stack header word of the caller of the */
332 /* function, just beyond the end of the integer restore area. */
334 FUNC_START(_restgpr_14) lwz 14,-72(11) /* restore gp registers */
335 FUNC_START(_restgpr_15) lwz 15,-68(11)
336 FUNC_START(_restgpr_16) lwz 16,-64(11)
337 FUNC_START(_restgpr_17) lwz 17,-60(11)
338 FUNC_START(_restgpr_18) lwz 18,-56(11)
339 FUNC_START(_restgpr_19) lwz 19,-52(11)
340 FUNC_START(_restgpr_20) lwz 20,-48(11)
341 FUNC_START(_restgpr_21) lwz 21,-44(11)
342 FUNC_START(_restgpr_22) lwz 22,-40(11)
343 FUNC_START(_restgpr_23) lwz 23,-36(11)
344 FUNC_START(_restgpr_24) lwz 24,-32(11)
345 FUNC_START(_restgpr_25) lwz 25,-28(11)
346 FUNC_START(_restgpr_26) lwz 26,-24(11)
347 FUNC_START(_restgpr_27) lwz 27,-20(11)
348 FUNC_START(_restgpr_28) lwz 28,-16(11)
349 FUNC_START(_restgpr_29) lwz 29,-12(11)
350 FUNC_START(_restgpr_30) lwz 30,-8(11)
351 FUNC_START(_restgpr_31) lwz 31,-4(11)
353 FUNC_END(_restgpr_31)
354 FUNC_END(_restgpr_30)
355 FUNC_END(_restgpr_29)
356 FUNC_END(_restgpr_28)
357 FUNC_END(_restgpr_27)
358 FUNC_END(_restgpr_26)
359 FUNC_END(_restgpr_25)
360 FUNC_END(_restgpr_24)
361 FUNC_END(_restgpr_23)
362 FUNC_END(_restgpr_22)
363 FUNC_END(_restgpr_21)
364 FUNC_END(_restgpr_20)
365 FUNC_END(_restgpr_19)
366 FUNC_END(_restgpr_18)
367 FUNC_END(_restgpr_17)
368 FUNC_END(_restgpr_16)
369 FUNC_END(_restgpr_15)
370 FUNC_END(_restgpr_14)
372 /* Routines for restoring floating point registers, called by the compiler. */
373 /* Called with r11 pointing to the stack header word of the caller of the */
374 /* function, just beyond the end of the floating point save area. */
375 /* In addition to restoring the fp registers, it will return to the caller's */
378 FUNC_START(_restfpr_14_x) lfd 14,-144(11) /* restore fp registers */
379 FUNC_START(_restfpr_15_x) lfd 15,-136(11)
380 FUNC_START(_restfpr_16_x) lfd 16,-128(11)
381 FUNC_START(_restfpr_17_x) lfd 17,-120(11)
382 FUNC_START(_restfpr_18_x) lfd 18,-112(11)
383 FUNC_START(_restfpr_19_x) lfd 19,-104(11)
384 FUNC_START(_restfpr_20_x) lfd 20,-96(11)
385 FUNC_START(_restfpr_21_x) lfd 21,-88(11)
386 FUNC_START(_restfpr_22_x) lfd 22,-80(11)
387 FUNC_START(_restfpr_23_x) lfd 23,-72(11)
388 FUNC_START(_restfpr_24_x) lfd 24,-64(11)
389 FUNC_START(_restfpr_25_x) lfd 25,-56(11)
390 FUNC_START(_restfpr_26_x) lfd 26,-48(11)
391 FUNC_START(_restfpr_27_x) lfd 27,-40(11)
392 FUNC_START(_restfpr_28_x) lfd 28,-32(11)
393 FUNC_START(_restfpr_29_x) lfd 29,-24(11)
394 FUNC_START(_restfpr_30_x) lfd 30,-16(11)
395 FUNC_START(_restfpr_31_x) lwz 0,4(11)
400 FUNC_END(_restfpr_31_x)
401 FUNC_END(_restfpr_30_x)
402 FUNC_END(_restfpr_29_x)
403 FUNC_END(_restfpr_28_x)
404 FUNC_END(_restfpr_27_x)
405 FUNC_END(_restfpr_26_x)
406 FUNC_END(_restfpr_25_x)
407 FUNC_END(_restfpr_24_x)
408 FUNC_END(_restfpr_23_x)
409 FUNC_END(_restfpr_22_x)
410 FUNC_END(_restfpr_21_x)
411 FUNC_END(_restfpr_20_x)
412 FUNC_END(_restfpr_19_x)
413 FUNC_END(_restfpr_18_x)
414 FUNC_END(_restfpr_17_x)
415 FUNC_END(_restfpr_16_x)
416 FUNC_END(_restfpr_15_x)
417 FUNC_END(_restfpr_14_x)
419 /* Routines for restoring integer registers, called by the compiler. */
420 /* Called with r11 pointing to the stack header word of the caller of the */
421 /* function, just beyond the end of the integer restore area. */
423 FUNC_START(_restgpr_14_x) lwz 14,-72(11) /* restore gp registers */
424 FUNC_START(_restgpr_15_x) lwz 15,-68(11)
425 FUNC_START(_restgpr_16_x) lwz 16,-64(11)
426 FUNC_START(_restgpr_17_x) lwz 17,-60(11)
427 FUNC_START(_restgpr_18_x) lwz 18,-56(11)
428 FUNC_START(_restgpr_19_x) lwz 19,-52(11)
429 FUNC_START(_restgpr_20_x) lwz 20,-48(11)
430 FUNC_START(_restgpr_21_x) lwz 21,-44(11)
431 FUNC_START(_restgpr_22_x) lwz 22,-40(11)
432 FUNC_START(_restgpr_23_x) lwz 23,-36(11)
433 FUNC_START(_restgpr_24_x) lwz 24,-32(11)
434 FUNC_START(_restgpr_25_x) lwz 25,-28(11)
435 FUNC_START(_restgpr_26_x) lwz 26,-24(11)
436 FUNC_START(_restgpr_27_x) lwz 27,-20(11)
437 FUNC_START(_restgpr_28_x) lwz 28,-16(11)
438 FUNC_START(_restgpr_29_x) lwz 29,-12(11)
439 FUNC_START(_restgpr_30_x) lwz 30,-8(11)
440 FUNC_START(_restgpr_31_x) lwz 0,4(11)
445 FUNC_END(_restgpr_31_x)
446 FUNC_END(_restgpr_30_x)
447 FUNC_END(_restgpr_29_x)
448 FUNC_END(_restgpr_28_x)
449 FUNC_END(_restgpr_27_x)
450 FUNC_END(_restgpr_26_x)
451 FUNC_END(_restgpr_25_x)
452 FUNC_END(_restgpr_24_x)
453 FUNC_END(_restgpr_23_x)
454 FUNC_END(_restgpr_22_x)
455 FUNC_END(_restgpr_21_x)
456 FUNC_END(_restgpr_20_x)
457 FUNC_END(_restgpr_19_x)
458 FUNC_END(_restgpr_18_x)
459 FUNC_END(_restgpr_17_x)
460 FUNC_END(_restgpr_16_x)
461 FUNC_END(_restgpr_15_x)
462 FUNC_END(_restgpr_14_x)