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[deliverable/binutils-gdb.git] / bfd / elf32-microblaze.c
CommitLineData
7ba29e2a
NC		 1/* Xilinx MicroBlaze-specific support for 32-bit ELF
2
2571583a 3 Copyright (C) 2009-2017 Free Software Foundation, Inc.
7ba29e2a
NC		 4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
21
22
23int dbg = 0;
24
7ba29e2a 25#include "sysdep.h"
691bf19c 26#include "bfd.h"
7ba29e2a
NC		 27#include "bfdlink.h"
28#include "libbfd.h"
29#include "elf-bfd.h"
30#include "elf/microblaze.h"
31#include <assert.h>
32
33#define USE_RELA /* Only USE_REL is actually significant, but this is
34 here are a reminder... */
35#define INST_WORD_SIZE 4
36
37static int ro_small_data_pointer = 0;
38static int rw_small_data_pointer = 0;
39
40static reloc_howto_type * microblaze_elf_howto_table [(int) R_MICROBLAZE_max];
41
42static reloc_howto_type microblaze_elf_howto_raw[] =
43{
44 /* This reloc does nothing. */
45 HOWTO (R_MICROBLAZE_NONE, /* Type. */
46 0, /* Rightshift. */
6346d5ca
AM		 47 3, /* Size (0 = byte, 1 = short, 2 = long). */
48 0, /* Bitsize. */
7ba29e2a
NC		 49 FALSE, /* PC_relative. */
50 0, /* Bitpos. */
6346d5ca 51 complain_overflow_dont, /* Complain on overflow. */
7ba29e2a
NC		 52 NULL, /* Special Function. */
53 "R_MICROBLAZE_NONE", /* Name. */
54 FALSE, /* Partial Inplace. */
55 0, /* Source Mask. */
56 0, /* Dest Mask. */
57 FALSE), /* PC relative offset? */
58
59 /* A standard 32 bit relocation. */
60 HOWTO (R_MICROBLAZE_32, /* Type. */
61 0, /* Rightshift. */
62 2, /* Size (0 = byte, 1 = short, 2 = long). */
63 32, /* Bitsize. */
64 FALSE, /* PC_relative. */
65 0, /* Bitpos. */
66 complain_overflow_bitfield, /* Complain on overflow. */
67 bfd_elf_generic_reloc,/* Special Function. */
68 "R_MICROBLAZE_32", /* Name. */
69 FALSE, /* Partial Inplace. */
70 0, /* Source Mask. */
71 0xffffffff, /* Dest Mask. */
72 FALSE), /* PC relative offset? */
73
74 /* A standard PCREL 32 bit relocation. */
75 HOWTO (R_MICROBLAZE_32_PCREL,/* Type. */
76 0, /* Rightshift. */
77 2, /* Size (0 = byte, 1 = short, 2 = long). */
78 32, /* Bitsize. */
79 TRUE, /* PC_relative. */
80 0, /* Bitpos. */
81 complain_overflow_bitfield, /* Complain on overflow. */
82 bfd_elf_generic_reloc,/* Special Function. */
83 "R_MICROBLAZE_32_PCREL", /* Name. */
84 TRUE, /* Partial Inplace. */
85 0, /* Source Mask. */
86 0xffffffff, /* Dest Mask. */
87 TRUE), /* PC relative offset? */
88
89 /* A 64 bit PCREL relocation. Table-entry not really used. */
90 HOWTO (R_MICROBLAZE_64_PCREL,/* Type. */
91 0, /* Rightshift. */
92 2, /* Size (0 = byte, 1 = short, 2 = long). */
93 16, /* Bitsize. */
94 TRUE, /* PC_relative. */
95 0, /* Bitpos. */
96 complain_overflow_dont, /* Complain on overflow. */
97 bfd_elf_generic_reloc,/* Special Function. */
98 "R_MICROBLAZE_64_PCREL", /* Name. */
99 FALSE, /* Partial Inplace. */
100 0, /* Source Mask. */
101 0x0000ffff, /* Dest Mask. */
102 TRUE), /* PC relative offset? */
103
104 /* The low half of a PCREL 32 bit relocation. */
105 HOWTO (R_MICROBLAZE_32_PCREL_LO, /* Type. */
106 0, /* Rightshift. */
107 2, /* Size (0 = byte, 1 = short, 2 = long). */
108 16, /* Bitsize. */
109 TRUE, /* PC_relative. */
110 0, /* Bitpos. */
111 complain_overflow_signed, /* Complain on overflow. */
112 bfd_elf_generic_reloc, /* Special Function. */
113 "R_MICROBLAZE_32_PCREL_LO", /* Name. */
114 FALSE, /* Partial Inplace. */
115 0, /* Source Mask. */
116 0x0000ffff, /* Dest Mask. */
117 TRUE), /* PC relative offset? */
118
119 /* A 64 bit relocation. Table entry not really used. */
120 HOWTO (R_MICROBLAZE_64, /* Type. */
121 0, /* Rightshift. */
122 2, /* Size (0 = byte, 1 = short, 2 = long). */
123 16, /* Bitsize. */
124 FALSE, /* PC_relative. */
125 0, /* Bitpos. */
126 complain_overflow_dont, /* Complain on overflow. */
127 bfd_elf_generic_reloc,/* Special Function. */
128 "R_MICROBLAZE_64", /* Name. */
129 FALSE, /* Partial Inplace. */
130 0, /* Source Mask. */
131 0x0000ffff, /* Dest Mask. */
132 FALSE), /* PC relative offset? */
133
134 /* The low half of a 32 bit relocation. */
135 HOWTO (R_MICROBLAZE_32_LO, /* Type. */
136 0, /* Rightshift. */
137 2, /* Size (0 = byte, 1 = short, 2 = long). */
138 16, /* Bitsize. */
139 FALSE, /* PC_relative. */
140 0, /* Bitpos. */
141 complain_overflow_signed, /* Complain on overflow. */
142 bfd_elf_generic_reloc,/* Special Function. */
143 "R_MICROBLAZE_32_LO", /* Name. */
144 FALSE, /* Partial Inplace. */
145 0, /* Source Mask. */
146 0x0000ffff, /* Dest Mask. */
147 FALSE), /* PC relative offset? */
148
149 /* Read-only small data section relocation. */
150 HOWTO (R_MICROBLAZE_SRO32, /* Type. */
151 0, /* Rightshift. */
152 2, /* Size (0 = byte, 1 = short, 2 = long). */
153 16, /* Bitsize. */
154 FALSE, /* PC_relative. */
155 0, /* Bitpos. */
156 complain_overflow_bitfield, /* Complain on overflow. */
157 bfd_elf_generic_reloc,/* Special Function. */
158 "R_MICROBLAZE_SRO32", /* Name. */
159 FALSE, /* Partial Inplace. */
160 0, /* Source Mask. */
161 0x0000ffff, /* Dest Mask. */
162 FALSE), /* PC relative offset? */
163
164 /* Read-write small data area relocation. */
165 HOWTO (R_MICROBLAZE_SRW32, /* Type. */
166 0, /* Rightshift. */
167 2, /* Size (0 = byte, 1 = short, 2 = long). */
168 16, /* Bitsize. */
169 FALSE, /* PC_relative. */
170 0, /* Bitpos. */
171 complain_overflow_bitfield, /* Complain on overflow. */
172 bfd_elf_generic_reloc,/* Special Function. */
173 "R_MICROBLAZE_SRW32", /* Name. */
174 FALSE, /* Partial Inplace. */
175 0, /* Source Mask. */
176 0x0000ffff, /* Dest Mask. */
177 FALSE), /* PC relative offset? */
178
179 /* This reloc does nothing. Used for relaxation. */
180 HOWTO (R_MICROBLAZE_64_NONE, /* Type. */
181 0, /* Rightshift. */
6346d5ca
AM		 182 3, /* Size (0 = byte, 1 = short, 2 = long). */
183 0, /* Bitsize. */
7ba29e2a
NC		 184 TRUE, /* PC_relative. */
185 0, /* Bitpos. */
6346d5ca 186 complain_overflow_dont, /* Complain on overflow. */
7ba29e2a
NC		 187 NULL, /* Special Function. */
188 "R_MICROBLAZE_64_NONE",/* Name. */
189 FALSE, /* Partial Inplace. */
190 0, /* Source Mask. */
191 0, /* Dest Mask. */
192 FALSE), /* PC relative offset? */
193
194 /* Symbol Op Symbol relocation. */
195 HOWTO (R_MICROBLAZE_32_SYM_OP_SYM, /* Type. */
196 0, /* Rightshift. */
197 2, /* Size (0 = byte, 1 = short, 2 = long). */
198 32, /* Bitsize. */
199 FALSE, /* PC_relative. */
200 0, /* Bitpos. */
201 complain_overflow_bitfield, /* Complain on overflow. */
202 bfd_elf_generic_reloc,/* Special Function. */
203 "R_MICROBLAZE_32_SYM_OP_SYM", /* Name. */
204 FALSE, /* Partial Inplace. */
205 0, /* Source Mask. */
206 0xffffffff, /* Dest Mask. */
207 FALSE), /* PC relative offset? */
208
209 /* GNU extension to record C++ vtable hierarchy. */
210 HOWTO (R_MICROBLAZE_GNU_VTINHERIT, /* Type. */
211 0, /* Rightshift. */
212 2, /* Size (0 = byte, 1 = short, 2 = long). */
213 0, /* Bitsize. */
214 FALSE, /* PC_relative. */
215 0, /* Bitpos. */
216 complain_overflow_dont,/* Complain on overflow. */
217 NULL, /* Special Function. */
218 "R_MICROBLAZE_GNU_VTINHERIT", /* Name. */
219 FALSE, /* Partial Inplace. */
220 0, /* Source Mask. */
221 0, /* Dest Mask. */
222 FALSE), /* PC relative offset? */
223
224 /* GNU extension to record C++ vtable member usage. */
225 HOWTO (R_MICROBLAZE_GNU_VTENTRY, /* Type. */
226 0, /* Rightshift. */
227 2, /* Size (0 = byte, 1 = short, 2 = long). */
228 0, /* Bitsize. */
229 FALSE, /* PC_relative. */
230 0, /* Bitpos. */
231 complain_overflow_dont,/* Complain on overflow. */
232 _bfd_elf_rel_vtable_reloc_fn, /* Special Function. */
233 "R_MICROBLAZE_GNU_VTENTRY", /* Name. */
234 FALSE, /* Partial Inplace. */
235 0, /* Source Mask. */
236 0, /* Dest Mask. */
237 FALSE), /* PC relative offset? */
238
239 /* A 64 bit GOTPC relocation. Table-entry not really used. */
240 HOWTO (R_MICROBLAZE_GOTPC_64, /* Type. */
241 0, /* Rightshift. */
242 2, /* Size (0 = byte, 1 = short, 2 = long). */
243 16, /* Bitsize. */
244 TRUE, /* PC_relative. */
245 0, /* Bitpos. */
246 complain_overflow_dont, /* Complain on overflow. */
247 bfd_elf_generic_reloc, /* Special Function. */
248 "R_MICROBLAZE_GOTPC_64", /* Name. */
249 FALSE, /* Partial Inplace. */
250 0, /* Source Mask. */
251 0x0000ffff, /* Dest Mask. */
252 TRUE), /* PC relative offset? */
253
254 /* A 64 bit GOT relocation. Table-entry not really used. */
255 HOWTO (R_MICROBLAZE_GOT_64, /* Type. */
256 0, /* Rightshift. */
257 2, /* Size (0 = byte, 1 = short, 2 = long). */
258 16, /* Bitsize. */
259 FALSE, /* PC_relative. */
260 0, /* Bitpos. */
261 complain_overflow_dont, /* Complain on overflow. */
262 bfd_elf_generic_reloc,/* Special Function. */
263 "R_MICROBLAZE_GOT_64",/* Name. */
264 FALSE, /* Partial Inplace. */
265 0, /* Source Mask. */
266 0x0000ffff, /* Dest Mask. */
267 FALSE), /* PC relative offset? */
268
269 /* A 64 bit PLT relocation. Table-entry not really used. */
270 HOWTO (R_MICROBLAZE_PLT_64, /* Type. */
271 0, /* Rightshift. */
272 2, /* Size (0 = byte, 1 = short, 2 = long). */
273 16, /* Bitsize. */
274 TRUE, /* PC_relative. */
275 0, /* Bitpos. */
276 complain_overflow_dont, /* Complain on overflow. */
277 bfd_elf_generic_reloc,/* Special Function. */
278 "R_MICROBLAZE_PLT_64",/* Name. */
279 FALSE, /* Partial Inplace. */
280 0, /* Source Mask. */
281 0x0000ffff, /* Dest Mask. */
282 TRUE), /* PC relative offset? */
283
284 /* Table-entry not really used. */
285 HOWTO (R_MICROBLAZE_REL, /* Type. */
286 0, /* Rightshift. */
287 2, /* Size (0 = byte, 1 = short, 2 = long). */
288 16, /* Bitsize. */
289 TRUE, /* PC_relative. */
290 0, /* Bitpos. */
291 complain_overflow_dont, /* Complain on overflow. */
292 bfd_elf_generic_reloc,/* Special Function. */
293 "R_MICROBLAZE_REL", /* Name. */
294 FALSE, /* Partial Inplace. */
295 0, /* Source Mask. */
296 0x0000ffff, /* Dest Mask. */
297 TRUE), /* PC relative offset? */
298
299 /* Table-entry not really used. */
300 HOWTO (R_MICROBLAZE_JUMP_SLOT,/* Type. */
301 0, /* Rightshift. */
302 2, /* Size (0 = byte, 1 = short, 2 = long). */
303 16, /* Bitsize. */
304 TRUE, /* PC_relative. */
305 0, /* Bitpos. */
306 complain_overflow_dont, /* Complain on overflow. */
307 bfd_elf_generic_reloc,/* Special Function. */
308 "R_MICROBLAZE_JUMP_SLOT", /* Name. */
309 FALSE, /* Partial Inplace. */
310 0, /* Source Mask. */
311 0x0000ffff, /* Dest Mask. */
312 TRUE), /* PC relative offset? */
313
314 /* Table-entry not really used. */
315 HOWTO (R_MICROBLAZE_GLOB_DAT,/* Type. */
316 0, /* Rightshift. */
317 2, /* Size (0 = byte, 1 = short, 2 = long). */
318 16, /* Bitsize. */
319 TRUE, /* PC_relative. */
320 0, /* Bitpos. */
321 complain_overflow_dont, /* Complain on overflow. */
322 bfd_elf_generic_reloc,/* Special Function. */
323 "R_MICROBLAZE_GLOB_DAT", /* Name. */
324 FALSE, /* Partial Inplace. */
325 0, /* Source Mask. */
326 0x0000ffff, /* Dest Mask. */
327 TRUE), /* PC relative offset? */
328
329 /* A 64 bit GOT relative relocation. Table-entry not really used. */
330 HOWTO (R_MICROBLAZE_GOTOFF_64, /* Type. */
331 0, /* Rightshift. */
332 2, /* Size (0 = byte, 1 = short, 2 = long). */
333 16, /* Bitsize. */
334 FALSE, /* PC_relative. */
335 0, /* Bitpos. */
336 complain_overflow_dont, /* Complain on overflow. */
337 bfd_elf_generic_reloc,/* Special Function. */
338 "R_MICROBLAZE_GOTOFF_64", /* Name. */
339 FALSE, /* Partial Inplace. */
340 0, /* Source Mask. */
341 0x0000ffff, /* Dest Mask. */
342 FALSE), /* PC relative offset? */
343
344 /* A 32 bit GOT relative relocation. Table-entry not really used. */
345 HOWTO (R_MICROBLAZE_GOTOFF_32, /* Type. */
346 0, /* Rightshift. */
347 2, /* Size (0 = byte, 1 = short, 2 = long). */
348 16, /* Bitsize. */
349 FALSE, /* PC_relative. */
350 0, /* Bitpos. */
351 complain_overflow_dont, /* Complain on overflow. */
352 bfd_elf_generic_reloc, /* Special Function. */
353 "R_MICROBLAZE_GOTOFF_32", /* Name. */
354 FALSE, /* Partial Inplace. */
355 0, /* Source Mask. */
356 0x0000ffff, /* Dest Mask. */
357 FALSE), /* PC relative offset? */
358
359 /* COPY relocation. Table-entry not really used. */
360 HOWTO (R_MICROBLAZE_COPY, /* Type. */
361 0, /* Rightshift. */
362 2, /* Size (0 = byte, 1 = short, 2 = long). */
363 16, /* Bitsize. */
364 FALSE, /* PC_relative. */
365 0, /* Bitpos. */
366 complain_overflow_dont, /* Complain on overflow. */
367 bfd_elf_generic_reloc,/* Special Function. */
368 "R_MICROBLAZE_COPY", /* Name. */
369 FALSE, /* Partial Inplace. */
370 0, /* Source Mask. */
371 0x0000ffff, /* Dest Mask. */
372 FALSE), /* PC relative offset? */
69b06cc8
ME		 373
374 /* Marker relocs for TLS. */
375 HOWTO (R_MICROBLAZE_TLS,
376 0, /* rightshift */
377 2, /* size (0 = byte, 1 = short, 2 = long) */
378 32, /* bitsize */
379 FALSE, /* pc_relative */
380 0, /* bitpos */
381 complain_overflow_dont, /* complain_on_overflow */
382 bfd_elf_generic_reloc, /* special_function */
383 "R_MICROBLAZE_TLS", /* name */
384 FALSE, /* partial_inplace */
385 0, /* src_mask */
386 0x0000ffff, /* dst_mask */
387 FALSE), /* pcrel_offset */
388
389 HOWTO (R_MICROBLAZE_TLSGD,
390 0, /* rightshift */
391 2, /* size (0 = byte, 1 = short, 2 = long) */
392 32, /* bitsize */
393 FALSE, /* pc_relative */
394 0, /* bitpos */
395 complain_overflow_dont, /* complain_on_overflow */
396 bfd_elf_generic_reloc, /* special_function */
397 "R_MICROBLAZE_TLSGD", /* name */
398 FALSE, /* partial_inplace */
399 0, /* src_mask */
400 0x0000ffff, /* dst_mask */
401 FALSE), /* pcrel_offset */
402
403 HOWTO (R_MICROBLAZE_TLSLD,
404 0, /* rightshift */
405 2, /* size (0 = byte, 1 = short, 2 = long) */
406 32, /* bitsize */
407 FALSE, /* pc_relative */
408 0, /* bitpos */
409 complain_overflow_dont, /* complain_on_overflow */
410 bfd_elf_generic_reloc, /* special_function */
411 "R_MICROBLAZE_TLSLD", /* name */
412 FALSE, /* partial_inplace */
413 0, /* src_mask */
414 0x0000ffff, /* dst_mask */
415 FALSE), /* pcrel_offset */
416
417 /* Computes the load module index of the load module that contains the
418 definition of its TLS sym. */
419 HOWTO (R_MICROBLAZE_TLSDTPMOD32,
420 0, /* rightshift */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
422 32, /* bitsize */
423 FALSE, /* pc_relative */
424 0, /* bitpos */
425 complain_overflow_dont, /* complain_on_overflow */
426 bfd_elf_generic_reloc, /* special_function */
427 "R_MICROBLAZE_TLSDTPMOD32", /* name */
428 FALSE, /* partial_inplace */
429 0, /* src_mask */
430 0x0000ffff, /* dst_mask */
431 FALSE), /* pcrel_offset */
432
433 /* Computes a dtv-relative displacement, the difference between the value
434 of sym+add and the base address of the thread-local storage block that
435 contains the definition of sym, minus 0x8000. Used for initializing GOT */
436 HOWTO (R_MICROBLAZE_TLSDTPREL32,
437 0, /* rightshift */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
439 32, /* bitsize */
440 FALSE, /* pc_relative */
441 0, /* bitpos */
442 complain_overflow_dont, /* complain_on_overflow */
443 bfd_elf_generic_reloc, /* special_function */
444 "R_MICROBLAZE_TLSDTPREL32", /* name */
445 FALSE, /* partial_inplace */
446 0, /* src_mask */
447 0x0000ffff, /* dst_mask */
448 FALSE), /* pcrel_offset */
449
450 /* Computes a dtv-relative displacement, the difference between the value
451 of sym+add and the base address of the thread-local storage block that
452 contains the definition of sym, minus 0x8000. */
453 HOWTO (R_MICROBLAZE_TLSDTPREL64,
454 0, /* rightshift */
455 2, /* size (0 = byte, 1 = short, 2 = long) */
456 32, /* bitsize */
457 FALSE, /* pc_relative */
458 0, /* bitpos */
459 complain_overflow_dont, /* complain_on_overflow */
460 bfd_elf_generic_reloc, /* special_function */
461 "R_MICROBLAZE_TLSDTPREL64", /* name */
462 FALSE, /* partial_inplace */
463 0, /* src_mask */
464 0x0000ffff, /* dst_mask */
465 FALSE), /* pcrel_offset */
466
467 /* Computes a tp-relative displacement, the difference between the value of
468 sym+add and the value of the thread pointer (r13). */
469 HOWTO (R_MICROBLAZE_TLSGOTTPREL32,
470 0, /* rightshift */
471 2, /* size (0 = byte, 1 = short, 2 = long) */
472 32, /* bitsize */
473 FALSE, /* pc_relative */
474 0, /* bitpos */
475 complain_overflow_dont, /* complain_on_overflow */
476 bfd_elf_generic_reloc, /* special_function */
477 "R_MICROBLAZE_TLSGOTTPREL32", /* name */
478 FALSE, /* partial_inplace */
479 0, /* src_mask */
480 0x0000ffff, /* dst_mask */
481 FALSE), /* pcrel_offset */
482
483 /* Computes a tp-relative displacement, the difference between the value of
484 sym+add and the value of the thread pointer (r13). */
485 HOWTO (R_MICROBLAZE_TLSTPREL32,
486 0, /* rightshift */
487 2, /* size (0 = byte, 1 = short, 2 = long) */
488 32, /* bitsize */
489 FALSE, /* pc_relative */
490 0, /* bitpos */
491 complain_overflow_dont, /* complain_on_overflow */
492 bfd_elf_generic_reloc, /* special_function */
493 "R_MICROBLAZE_TLSTPREL32", /* name */
494 FALSE, /* partial_inplace */
495 0, /* src_mask */
496 0x0000ffff, /* dst_mask */
497 FALSE), /* pcrel_offset */
498
7ba29e2a
NC		 499};
500
501#ifndef NUM_ELEM
502#define NUM_ELEM(a) (sizeof (a) / sizeof (a)[0])
503#endif
504\f
505/* Initialize the microblaze_elf_howto_table, so that linear accesses can be done. */
506
507static void
508microblaze_elf_howto_init (void)
509{
510 unsigned int i;
511
512 for (i = NUM_ELEM (microblaze_elf_howto_raw); i--;)
513 {
514 unsigned int type;
515
516 type = microblaze_elf_howto_raw[i].type;
517
518 BFD_ASSERT (type < NUM_ELEM (microblaze_elf_howto_table));
519
520 microblaze_elf_howto_table [type] = & microblaze_elf_howto_raw [i];
521 }
522}
523\f
524static reloc_howto_type *
525microblaze_elf_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
526 bfd_reloc_code_real_type code)
527{
528 enum elf_microblaze_reloc_type microblaze_reloc = R_MICROBLAZE_NONE;
529
530 switch (code)
531 {
532 case BFD_RELOC_NONE:
533 microblaze_reloc = R_MICROBLAZE_NONE;
534 break;
535 case BFD_RELOC_MICROBLAZE_64_NONE:
536 microblaze_reloc = R_MICROBLAZE_64_NONE;
537 break;
538 case BFD_RELOC_32:
539 microblaze_reloc = R_MICROBLAZE_32;
540 break;
541 /* RVA is treated the same as 32 */
542 case BFD_RELOC_RVA:
543 microblaze_reloc = R_MICROBLAZE_32;
544 break;
545 case BFD_RELOC_32_PCREL:
546 microblaze_reloc = R_MICROBLAZE_32_PCREL;
547 break;
548 case BFD_RELOC_64_PCREL:
549 microblaze_reloc = R_MICROBLAZE_64_PCREL;
550 break;
551 case BFD_RELOC_MICROBLAZE_32_LO_PCREL:
552 microblaze_reloc = R_MICROBLAZE_32_PCREL_LO;
553 break;
554 case BFD_RELOC_64:
555 microblaze_reloc = R_MICROBLAZE_64;
556 break;
557 case BFD_RELOC_MICROBLAZE_32_LO:
558 microblaze_reloc = R_MICROBLAZE_32_LO;
559 break;
560 case BFD_RELOC_MICROBLAZE_32_ROSDA:
561 microblaze_reloc = R_MICROBLAZE_SRO32;
562 break;
563 case BFD_RELOC_MICROBLAZE_32_RWSDA:
564 microblaze_reloc = R_MICROBLAZE_SRW32;
565 break;
566 case BFD_RELOC_MICROBLAZE_32_SYM_OP_SYM:
567 microblaze_reloc = R_MICROBLAZE_32_SYM_OP_SYM;
568 break;
569 case BFD_RELOC_VTABLE_INHERIT:
570 microblaze_reloc = R_MICROBLAZE_GNU_VTINHERIT;
571 break;
572 case BFD_RELOC_VTABLE_ENTRY:
573 microblaze_reloc = R_MICROBLAZE_GNU_VTENTRY;
574 break;
575 case BFD_RELOC_MICROBLAZE_64_GOTPC:
576 microblaze_reloc = R_MICROBLAZE_GOTPC_64;
577 break;
578 case BFD_RELOC_MICROBLAZE_64_GOT:
579 microblaze_reloc = R_MICROBLAZE_GOT_64;
580 break;
581 case BFD_RELOC_MICROBLAZE_64_PLT:
582 microblaze_reloc = R_MICROBLAZE_PLT_64;
583 break;
584 case BFD_RELOC_MICROBLAZE_64_GOTOFF:
585 microblaze_reloc = R_MICROBLAZE_GOTOFF_64;
586 break;
587 case BFD_RELOC_MICROBLAZE_32_GOTOFF:
588 microblaze_reloc = R_MICROBLAZE_GOTOFF_32;
589 break;
69b06cc8
ME		 590 case BFD_RELOC_MICROBLAZE_64_TLSGD:
591 microblaze_reloc = R_MICROBLAZE_TLSGD;
592 break;
593 case BFD_RELOC_MICROBLAZE_64_TLSLD:
594 microblaze_reloc = R_MICROBLAZE_TLSLD;
595 break;
596 case BFD_RELOC_MICROBLAZE_32_TLSDTPREL:
597 microblaze_reloc = R_MICROBLAZE_TLSDTPREL32;
598 break;
599 case BFD_RELOC_MICROBLAZE_64_TLSDTPREL:
600 microblaze_reloc = R_MICROBLAZE_TLSDTPREL64;
601 break;
602 case BFD_RELOC_MICROBLAZE_32_TLSDTPMOD:
603 microblaze_reloc = R_MICROBLAZE_TLSDTPMOD32;
604 break;
605 case BFD_RELOC_MICROBLAZE_64_TLSGOTTPREL:
606 microblaze_reloc = R_MICROBLAZE_TLSGOTTPREL32;
607 break;
608 case BFD_RELOC_MICROBLAZE_64_TLSTPREL:
609 microblaze_reloc = R_MICROBLAZE_TLSTPREL32;
610 break;
7ba29e2a
NC		 611 case BFD_RELOC_MICROBLAZE_COPY:
612 microblaze_reloc = R_MICROBLAZE_COPY;
613 break;
614 default:
615 return (reloc_howto_type *) NULL;
616 }
617
618 if (!microblaze_elf_howto_table [R_MICROBLAZE_32])
619 /* Initialize howto table if needed. */
620 microblaze_elf_howto_init ();
621
622 return microblaze_elf_howto_table [(int) microblaze_reloc];
623};
624
625static reloc_howto_type *
626microblaze_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
627 const char *r_name)
628{
629 unsigned int i;
630
631 for (i = 0; i < NUM_ELEM (microblaze_elf_howto_raw); i++)
632 if (microblaze_elf_howto_raw[i].name != NULL
633 && strcasecmp (microblaze_elf_howto_raw[i].name, r_name) == 0)
634 return &microblaze_elf_howto_raw[i];
635
636 return NULL;
637}
638
639/* Set the howto pointer for a RCE ELF reloc. */
640
641static void
642microblaze_elf_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED,
643 arelent * cache_ptr,
644 Elf_Internal_Rela * dst)
645{
cd21f5da
NC		 646 unsigned int r_type;
647
7ba29e2a
NC		 648 if (!microblaze_elf_howto_table [R_MICROBLAZE_32])
649 /* Initialize howto table if needed. */
650 microblaze_elf_howto_init ();
651
cd21f5da
NC		 652 r_type = ELF32_R_TYPE (dst->r_info);
653 if (r_type >= R_MICROBLAZE_max)
654 {
695344c0 655 /* xgettext:c-format */
4eca0228
AM		 656 _bfd_error_handler (_("%B: unrecognised MicroBlaze reloc number: %d"),
657 abfd, r_type);
cd21f5da
NC		 658 bfd_set_error (bfd_error_bad_value);
659 r_type = R_MICROBLAZE_NONE;
660 }
7ba29e2a 661
cd21f5da 662 cache_ptr->howto = microblaze_elf_howto_table [r_type];
7ba29e2a
NC		 663}
664
665/* Microblaze ELF local labels start with 'L.' or '$L', not '.L'. */
666
667static bfd_boolean
668microblaze_elf_is_local_label_name (bfd *abfd, const char *name)
669{
670 if (name[0] == 'L' && name[1] == '.')
671 return TRUE;
672
673 if (name[0] == '$' && name[1] == 'L')
674 return TRUE;
675
676 /* With gcc, the labels go back to starting with '.', so we accept
677 the generic ELF local label syntax as well. */
678 return _bfd_elf_is_local_label_name (abfd, name);
679}
680
681/* The microblaze linker (like many others) needs to keep track of
682 the number of relocs that it decides to copy as dynamic relocs in
683 check_relocs for each symbol. This is so that it can later discard
684 them if they are found to be unnecessary. We store the information
685 in a field extending the regular ELF linker hash table. */
686
687struct elf32_mb_dyn_relocs
688{
689 struct elf32_mb_dyn_relocs *next;
690
691 /* The input section of the reloc. */
692 asection *sec;
693
694 /* Total number of relocs copied for the input section. */
695 bfd_size_type count;
696
697 /* Number of pc-relative relocs copied for the input section. */
698 bfd_size_type pc_count;
699};
700
701/* ELF linker hash entry. */
702
703struct elf32_mb_link_hash_entry
704{
705 struct elf_link_hash_entry elf;
706
707 /* Track dynamic relocs copied for this symbol. */
708 struct elf32_mb_dyn_relocs *dyn_relocs;
709
69b06cc8
ME		 710 /* TLS Reference Types for the symbol; Updated by check_relocs */
711#define TLS_GD 1 /* GD reloc. */
712#define TLS_LD 2 /* LD reloc. */
713#define TLS_TPREL 4 /* TPREL reloc, => IE. */
714#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
715#define TLS_TLS 16 /* Any TLS reloc. */
716 unsigned char tls_mask;
717
7ba29e2a
NC		 718};
719
69b06cc8
ME		 720#define IS_TLS_GD(x) (x == (TLS_TLS | TLS_GD))
721#define IS_TLS_LD(x) (x == (TLS_TLS | TLS_LD))
722#define IS_TLS_DTPREL(x) (x == (TLS_TLS | TLS_DTPREL))
723#define IS_TLS_NONE(x) (x == 0)
724
7ba29e2a
NC		 725#define elf32_mb_hash_entry(ent) ((struct elf32_mb_link_hash_entry *)(ent))
726
727/* ELF linker hash table. */
728
729struct elf32_mb_link_hash_table
730{
731 struct elf_link_hash_table elf;
732
7ba29e2a
NC		 733 /* Small local sym to section mapping cache. */
734 struct sym_cache sym_sec;
69b06cc8
ME		 735
736 /* TLS Local Dynamic GOT Entry */
737 union {
738 bfd_signed_vma refcount;
739 bfd_vma offset;
740 } tlsld_got;
7ba29e2a
NC		 741};
742
69b06cc8
ME		 743/* Nonzero if this section has TLS related relocations. */
744#define has_tls_reloc sec_flg0
745
7ba29e2a
NC		 746/* Get the ELF linker hash table from a link_info structure. */
747
748#define elf32_mb_hash_table(p) \
4dfe6ac6
NC		 749 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
750 == MICROBLAZE_ELF_DATA ? ((struct elf32_mb_link_hash_table *) ((p)->hash)) : NULL)
7ba29e2a
NC		 751
752/* Create an entry in a microblaze ELF linker hash table. */
753
754static struct bfd_hash_entry *
755link_hash_newfunc (struct bfd_hash_entry *entry,
756 struct bfd_hash_table *table,
757 const char *string)
758{
759 /* Allocate the structure if it has not already been allocated by a
760 subclass. */
761 if (entry == NULL)
762 {
763 entry = bfd_hash_allocate (table,
764 sizeof (struct elf32_mb_link_hash_entry));
765 if (entry == NULL)
766 return entry;
767 }
768
769 /* Call the allocation method of the superclass. */
770 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
771 if (entry != NULL)
772 {
773 struct elf32_mb_link_hash_entry *eh;
774
775 eh = (struct elf32_mb_link_hash_entry *) entry;
776 eh->dyn_relocs = NULL;
69b06cc8 777 eh->tls_mask = 0;
7ba29e2a
NC		 778 }
779
780 return entry;
781}
782
783/* Create a mb ELF linker hash table. */
784
785static struct bfd_link_hash_table *
786microblaze_elf_link_hash_table_create (bfd *abfd)
787{
788 struct elf32_mb_link_hash_table *ret;
789 bfd_size_type amt = sizeof (struct elf32_mb_link_hash_table);
790
791 ret = (struct elf32_mb_link_hash_table *) bfd_zmalloc (amt);
792 if (ret == NULL)
793 return NULL;
794
795 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC		 796 sizeof (struct elf32_mb_link_hash_entry),
797 MICROBLAZE_ELF_DATA))
7ba29e2a
NC		 798 {
799 free (ret);
800 return NULL;
801 }
802
803 return &ret->elf.root;
804}
805\f
806/* Set the values of the small data pointers. */
807
808static void
809microblaze_elf_final_sdp (struct bfd_link_info *info)
810{
811 struct bfd_link_hash_entry *h;
812
813 h = bfd_link_hash_lookup (info->hash, RO_SDA_ANCHOR_NAME, FALSE, FALSE, TRUE);
814 if (h != (struct bfd_link_hash_entry *) NULL
815 && h->type == bfd_link_hash_defined)
816 ro_small_data_pointer = (h->u.def.value
817 + h->u.def.section->output_section->vma
818 + h->u.def.section->output_offset);
819
820 h = bfd_link_hash_lookup (info->hash, RW_SDA_ANCHOR_NAME, FALSE, FALSE, TRUE);
821 if (h != (struct bfd_link_hash_entry *) NULL
822 && h->type == bfd_link_hash_defined)
823 rw_small_data_pointer = (h->u.def.value
824 + h->u.def.section->output_section->vma
825 + h->u.def.section->output_offset);
826}
827
69b06cc8
ME		 828static bfd_vma
829dtprel_base (struct bfd_link_info *info)
830{
831 /* If tls_sec is NULL, we should have signalled an error already. */
832 if (elf_hash_table (info)->tls_sec == NULL)
833 return 0;
834 return elf_hash_table (info)->tls_sec->vma;
835}
836
837/* The size of the thread control block. */
838#define TCB_SIZE 8
839
840/* Output a simple dynamic relocation into SRELOC. */
841
842static void
843microblaze_elf_output_dynamic_relocation (bfd *output_bfd,
844 asection *sreloc,
845 unsigned long reloc_index,
846 unsigned long indx,
847 int r_type,
848 bfd_vma offset,
849 bfd_vma addend)
850{
851
852 Elf_Internal_Rela rel;
853
854 rel.r_info = ELF32_R_INFO (indx, r_type);
855 rel.r_offset = offset;
856 rel.r_addend = addend;
857
858 bfd_elf32_swap_reloca_out (output_bfd, &rel,
859 (sreloc->contents + reloc_index * sizeof (Elf32_External_Rela)));
860}
861
7ba29e2a
NC		 862/* This code is taken from elf32-m32r.c
863 There is some attempt to make this function usable for many architectures,
864 both USE_REL and USE_RELA ['twould be nice if such a critter existed],
865 if only to serve as a learning tool.
866
867 The RELOCATE_SECTION function is called by the new ELF backend linker
868 to handle the relocations for a section.
869
870 The relocs are always passed as Rela structures; if the section
871 actually uses Rel structures, the r_addend field will always be
872 zero.
873
874 This function is responsible for adjust the section contents as
875 necessary, and (if using Rela relocs and generating a
876 relocatable output file) adjusting the reloc addend as
877 necessary.
878
879 This function does not have to worry about setting the reloc
880 address or the reloc symbol index.
881
882 LOCAL_SYMS is a pointer to the swapped in local symbols.
883
884 LOCAL_SECTIONS is an array giving the section in the input file
885 corresponding to the st_shndx field of each local symbol.
886
887 The global hash table entry for the global symbols can be found
888 via elf_sym_hashes (input_bfd).
889
890 When generating relocatable output, this function must handle
891 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
892 going to be the section symbol corresponding to the output
893 section, which means that the addend must be adjusted
894 accordingly. */
895
896static bfd_boolean
897microblaze_elf_relocate_section (bfd *output_bfd,
898 struct bfd_link_info *info,
899 bfd *input_bfd,
900 asection *input_section,
901 bfd_byte *contents,
902 Elf_Internal_Rela *relocs,
903 Elf_Internal_Sym *local_syms,
904 asection **local_sections)
905{
906 struct elf32_mb_link_hash_table *htab;
907 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
908 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
909 Elf_Internal_Rela *rel, *relend;
f23200ad 910 int endian = (bfd_little_endian (output_bfd)) ? 0 : 2;
7ba29e2a
NC		 911 /* Assume success. */
912 bfd_boolean ret = TRUE;
913 asection *sreloc;
914 bfd_vma *local_got_offsets;
69b06cc8 915 unsigned int tls_type;
7ba29e2a
NC		 916
917 if (!microblaze_elf_howto_table[R_MICROBLAZE_max-1])
918 microblaze_elf_howto_init ();
919
920 htab = elf32_mb_hash_table (info);
4dfe6ac6
NC		 921 if (htab == NULL)
922 return FALSE;
923
7ba29e2a
NC		 924 local_got_offsets = elf_local_got_offsets (input_bfd);
925
926 sreloc = elf_section_data (input_section)->sreloc;
927
928 rel = relocs;
929 relend = relocs + input_section->reloc_count;
930 for (; rel < relend; rel++)
931 {
932 int r_type;
933 reloc_howto_type *howto;
934 unsigned long r_symndx;
935 bfd_vma addend = rel->r_addend;
936 bfd_vma offset = rel->r_offset;
937 struct elf_link_hash_entry *h;
938 Elf_Internal_Sym *sym;
939 asection *sec;
940 const char *sym_name;
941 bfd_reloc_status_type r = bfd_reloc_ok;
942 const char *errmsg = NULL;
943 bfd_boolean unresolved_reloc = FALSE;
944
945 h = NULL;
946 r_type = ELF32_R_TYPE (rel->r_info);
69b06cc8
ME		 947 tls_type = 0;
948
7ba29e2a
NC		 949 if (r_type < 0 || r_type >= (int) R_MICROBLAZE_max)
950 {
695344c0 951 /* xgettext:c-format */
dae82561
AM		 952 _bfd_error_handler (_("%B: unknown relocation type %d"),
953 input_bfd, (int) r_type);
7ba29e2a
NC		 954 bfd_set_error (bfd_error_bad_value);
955 ret = FALSE;
956 continue;
957 }
958
959 howto = microblaze_elf_howto_table[r_type];
960 r_symndx = ELF32_R_SYM (rel->r_info);
961
0e1862bb 962 if (bfd_link_relocatable (info))
7ba29e2a
NC		 963 {
964 /* This is a relocatable link. We don't have to change
965 anything, unless the reloc is against a section symbol,
966 in which case we have to adjust according to where the
967 section symbol winds up in the output section. */
968 sec = NULL;
969 if (r_symndx >= symtab_hdr->sh_info)
970 /* External symbol. */
971 continue;
972
973 /* Local symbol. */
974 sym = local_syms + r_symndx;
975 sym_name = "<local symbol>";
976 /* STT_SECTION: symbol is associated with a section. */
977 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
978 /* Symbol isn't associated with a section. Nothing to do. */
979 continue;
980
981 sec = local_sections[r_symndx];
982 addend += sec->output_offset + sym->st_value;
983#ifndef USE_REL
984 /* This can't be done for USE_REL because it doesn't mean anything
985 and elf_link_input_bfd asserts this stays zero. */
986 /* rel->r_addend = addend; */
987#endif
988
989#ifndef USE_REL
990 /* Addends are stored with relocs. We're done. */
991 continue;
992#else /* USE_REL */
993 /* If partial_inplace, we need to store any additional addend
994 back in the section. */
995 if (!howto->partial_inplace)
996 continue;
997 /* ??? Here is a nice place to call a special_function like handler. */
998 r = _bfd_relocate_contents (howto, input_bfd, addend,
999 contents + offset);
1000#endif /* USE_REL */
1001 }
1002 else
1003 {
1004 bfd_vma relocation;
112fef40 1005 bfd_boolean resolved_to_zero;
7ba29e2a
NC		 1006
1007 /* This is a final link. */
1008 sym = NULL;
1009 sec = NULL;
1010 unresolved_reloc = FALSE;
1011
1012 if (r_symndx < symtab_hdr->sh_info)
1013 {
1014 /* Local symbol. */
1015 sym = local_syms + r_symndx;
1016 sec = local_sections[r_symndx];
1017 if (sec == 0)
1018 continue;
1019 sym_name = "<local symbol>";
1020 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1021 /* r_addend may have changed if the reference section was
1022 a merge section. */
1023 addend = rel->r_addend;
1024 }
1025 else
1026 {
1027 /* External symbol. */
1028 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 1029 bfd_boolean ignored ATTRIBUTE_UNUSED;
7ba29e2a
NC		 1030
1031 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1032 r_symndx, symtab_hdr, sym_hashes,
1033 h, sec, relocation,
62d887d4 1034 unresolved_reloc, warned, ignored);
7ba29e2a
NC		 1035 sym_name = h->root.root.string;
1036 }
1037
1038 /* Sanity check the address. */
e57278ef 1039 if (offset > bfd_get_section_limit (input_bfd, input_section))
7ba29e2a
NC		 1040 {
1041 r = bfd_reloc_outofrange;
1042 goto check_reloc;
1043 }
1044
112fef40
L		 1045 resolved_to_zero = (h != NULL
1046 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
1047
7ba29e2a
NC		 1048 switch ((int) r_type)
1049 {
1050 case (int) R_MICROBLAZE_SRO32 :
1051 {
1052 const char *name;
1053
1054 /* Only relocate if the symbol is defined. */
1055 if (sec)
1056 {
a0f49396 1057 name = bfd_get_section_name (sec->owner, sec);
7ba29e2a
NC		 1058
1059 if (strcmp (name, ".sdata2") == 0
1060 || strcmp (name, ".sbss2") == 0)
1061 {
1062 if (ro_small_data_pointer == 0)
1063 microblaze_elf_final_sdp (info);
1064 if (ro_small_data_pointer == 0)
1065 {
1066 ret = FALSE;
1067 r = bfd_reloc_undefined;
1068 goto check_reloc;
1069 }
1070
1071 /* At this point `relocation' contains the object's
1072 address. */
1073 relocation -= ro_small_data_pointer;
1074 /* Now it contains the offset from _SDA2_BASE_. */
1075 r = _bfd_final_link_relocate (howto, input_bfd,
1076 input_section,
1077 contents, offset,
1078 relocation, addend);
1079 }
1080 else
1081 {
4eca0228 1082 _bfd_error_handler
695344c0 1083 /* xgettext:c-format */
dae82561
AM		 1084 (_("%B: The target (%s) of an %s relocation"
1085 " is in the wrong section (%A)"),
1086 input_bfd,
4eca0228
AM		 1087 sym_name,
1088 microblaze_elf_howto_table[(int) r_type]->name,
dae82561 1089 sec);
7ba29e2a
NC		 1090 /*bfd_set_error (bfd_error_bad_value); ??? why? */
1091 ret = FALSE;
1092 continue;
1093 }
1094 }
1095 }
1096 break;
1097
1098 case (int) R_MICROBLAZE_SRW32 :
1099 {
1100 const char *name;
1101
1102 /* Only relocate if the symbol is defined. */
1103 if (sec)
1104 {
a0f49396 1105 name = bfd_get_section_name (sec->owner, sec);
7ba29e2a
NC		 1106
1107 if (strcmp (name, ".sdata") == 0
1108 || strcmp (name, ".sbss") == 0)
1109 {
1110 if (rw_small_data_pointer == 0)
1111 microblaze_elf_final_sdp (info);
1112 if (rw_small_data_pointer == 0)
1113 {
1114 ret = FALSE;
1115 r = bfd_reloc_undefined;
1116 goto check_reloc;
1117 }
1118
1119 /* At this point `relocation' contains the object's
1120 address. */
1121 relocation -= rw_small_data_pointer;
1122 /* Now it contains the offset from _SDA_BASE_. */
1123 r = _bfd_final_link_relocate (howto, input_bfd,
1124 input_section,
1125 contents, offset,
1126 relocation, addend);
1127 }
1128 else
1129 {
4eca0228 1130 _bfd_error_handler
695344c0 1131 /* xgettext:c-format */
dae82561
AM		 1132 (_("%B: The target (%s) of an %s relocation"
1133 " is in the wrong section (%A)"),
1134 input_bfd,
4eca0228
AM		 1135 sym_name,
1136 microblaze_elf_howto_table[(int) r_type]->name,
dae82561 1137 sec);
7ba29e2a
NC		 1138 /*bfd_set_error (bfd_error_bad_value); ??? why? */
1139 ret = FALSE;
1140 continue;
1141 }
1142 }
1143 }
1144 break;
1145
1146 case (int) R_MICROBLAZE_32_SYM_OP_SYM:
1147 break; /* Do nothing. */
1148
1149 case (int) R_MICROBLAZE_GOTPC_64:
ce558b89
AM		 1150 relocation = (htab->elf.sgotplt->output_section->vma
1151 + htab->elf.sgotplt->output_offset);
7ba29e2a
NC		 1152 relocation -= (input_section->output_section->vma
1153 + input_section->output_offset
1154 + offset + INST_WORD_SIZE);
1155 relocation += addend;
1156 bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff,
f23200ad 1157 contents + offset + endian);
7ba29e2a 1158 bfd_put_16 (input_bfd, relocation & 0xffff,
f23200ad 1159 contents + offset + endian + INST_WORD_SIZE);
7ba29e2a
NC		 1160 break;
1161
1162 case (int) R_MICROBLAZE_PLT_64:
1163 {
1164 bfd_vma immediate;
ce558b89 1165 if (htab->elf.splt != NULL && h != NULL
7ba29e2a
NC		 1166 && h->plt.offset != (bfd_vma) -1)
1167 {
ce558b89
AM		 1168 relocation = (htab->elf.splt->output_section->vma
1169 + htab->elf.splt->output_offset
7ba29e2a
NC		 1170 + h->plt.offset);
1171 unresolved_reloc = FALSE;
1172 immediate = relocation - (input_section->output_section->vma
1173 + input_section->output_offset
1174 + offset + INST_WORD_SIZE);
1175 bfd_put_16 (input_bfd, (immediate >> 16) & 0xffff,
f23200ad 1176 contents + offset + endian);
7ba29e2a 1177 bfd_put_16 (input_bfd, immediate & 0xffff,
f23200ad 1178 contents + offset + endian + INST_WORD_SIZE);
7ba29e2a
NC		 1179 }
1180 else
1181 {
1182 relocation -= (input_section->output_section->vma
1183 + input_section->output_offset
1184 + offset + INST_WORD_SIZE);
1185 immediate = relocation;
1186 bfd_put_16 (input_bfd, (immediate >> 16) & 0xffff,
f23200ad 1187 contents + offset + endian);
7ba29e2a 1188 bfd_put_16 (input_bfd, immediate & 0xffff,
f23200ad 1189 contents + offset + endian + INST_WORD_SIZE);
7ba29e2a
NC		 1190 }
1191 break;
1192 }
1193
69b06cc8
ME		 1194 case (int) R_MICROBLAZE_TLSGD:
1195 tls_type = (TLS_TLS | TLS_GD);
1196 goto dogot;
1197 case (int) R_MICROBLAZE_TLSLD:
1198 tls_type = (TLS_TLS | TLS_LD);
1a0670f3 1199 /* Fall through. */
69b06cc8 1200 dogot:
7ba29e2a
NC		 1201 case (int) R_MICROBLAZE_GOT_64:
1202 {
69b06cc8
ME		 1203 bfd_vma *offp;
1204 bfd_vma off, off2;
1205 unsigned long indx;
1206 bfd_vma static_value;
1207
1208 bfd_boolean need_relocs = FALSE;
ce558b89 1209 if (htab->elf.sgot == NULL)
7ba29e2a 1210 abort ();
69b06cc8
ME		 1211
1212 indx = 0;
1213 offp = NULL;
1214
1215 /* 1. Identify GOT Offset;
1216 2. Compute Static Values
1217 3. Process Module Id, Process Offset
1218 4. Fixup Relocation with GOT offset value. */
1219
1220 /* 1. Determine GOT Offset to use : TLS_LD, global, local */
1221 if (IS_TLS_LD (tls_type))
1222 offp = &htab->tlsld_got.offset;
1223 else if (h != NULL)
1224 {
ce558b89
AM		 1225 if (htab->elf.sgotplt != NULL
1226 && h->got.offset != (bfd_vma) -1)
1227 offp = &h->got.offset;
69b06cc8 1228 else
ce558b89 1229 abort ();
69b06cc8
ME		 1230 }
1231 else
7ba29e2a 1232 {
7ba29e2a
NC		 1233 if (local_got_offsets == NULL)
1234 abort ();
69b06cc8
ME		 1235 offp = &local_got_offsets[r_symndx];
1236 }
1237
1238 if (!offp)
1239 abort ();
1240
1241 off = (*offp) & ~1;
1242 off2 = off;
1243
1244 if (IS_TLS_LD(tls_type) || IS_TLS_GD(tls_type))
1245 off2 = off + 4;
1246
1247 /* Symbol index to use for relocs */
1248 if (h != NULL)
1249 {
1250 bfd_boolean dyn =
1251 elf_hash_table (info)->dynamic_sections_created;
1252
0e1862bb
L		 1253 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
1254 bfd_link_pic (info),
1255 h)
1256 && (!bfd_link_pic (info)
1257 || !SYMBOL_REFERENCES_LOCAL (info, h)))
69b06cc8
ME		 1258 indx = h->dynindx;
1259 }
7ba29e2a 1260
69b06cc8 1261 /* Need to generate relocs ? */
0e1862bb 1262 if ((bfd_link_pic (info) || indx != 0)
69b06cc8 1263 && (h == NULL
112fef40
L		 1264 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1265 && !resolved_to_zero)
69b06cc8
ME		 1266 || h->root.type != bfd_link_hash_undefweak))
1267 need_relocs = TRUE;
1268
1269 /* 2. Compute/Emit Static value of r-expression */
1270 static_value = relocation + addend;
1271
1272 /* 3. Process module-id and offset */
1273 if (! ((*offp) & 1) )
1274 {
1275 bfd_vma got_offset;
1276
ce558b89
AM		 1277 got_offset = (htab->elf.sgot->output_section->vma
1278 + htab->elf.sgot->output_offset
69b06cc8
ME		 1279 + off);
1280
1281 /* Process module-id */
1282 if (IS_TLS_LD(tls_type))
1283 {
0e1862bb 1284 if (! bfd_link_pic (info))
ce558b89
AM		 1285 bfd_put_32 (output_bfd, 1,
1286 htab->elf.sgot->contents + off);
69b06cc8 1287 else
ce558b89
AM		 1288 microblaze_elf_output_dynamic_relocation
1289 (output_bfd,
1290 htab->elf.srelgot,
1291 htab->elf.srelgot->reloc_count++,
1292 /* symindex= */ 0, R_MICROBLAZE_TLSDTPMOD32,
1293 got_offset, 0);
7ba29e2a 1294 }
69b06cc8
ME		 1295 else if (IS_TLS_GD(tls_type))
1296 {
1297 if (! need_relocs)
ce558b89
AM		 1298 bfd_put_32 (output_bfd, 1,
1299 htab->elf.sgot->contents + off);
69b06cc8 1300 else
ce558b89
AM		 1301 microblaze_elf_output_dynamic_relocation
1302 (output_bfd,
1303 htab->elf.srelgot,
1304 htab->elf.srelgot->reloc_count++,
1305 /* symindex= */ indx, R_MICROBLAZE_TLSDTPMOD32,
1306 got_offset, indx ? 0 : static_value);
69b06cc8
ME		 1307 }
1308
1309 /* Process Offset */
ce558b89 1310 if (htab->elf.srelgot == NULL)
69b06cc8
ME		 1311 abort ();
1312
ce558b89
AM		 1313 got_offset = (htab->elf.sgot->output_section->vma
1314 + htab->elf.sgot->output_offset
69b06cc8
ME		 1315 + off2);
1316 if (IS_TLS_LD(tls_type))
1317 {
1318 /* For LD, offset should be 0 */
1319 *offp |= 1;
ce558b89
AM		 1320 bfd_put_32 (output_bfd, 0,
1321 htab->elf.sgot->contents + off2);
69b06cc8
ME		 1322 }
1323 else if (IS_TLS_GD(tls_type))
7ba29e2a 1324 {
69b06cc8
ME		 1325 *offp |= 1;
1326 static_value -= dtprel_base(info);
1327 if (need_relocs)
ce558b89
AM		 1328 microblaze_elf_output_dynamic_relocation
1329 (output_bfd,
1330 htab->elf.srelgot,
1331 htab->elf.srelgot->reloc_count++,
1332 /* symindex= */ indx, R_MICROBLAZE_TLSDTPREL32,
1333 got_offset, indx ? 0 : static_value);
69b06cc8 1334 else
ce558b89
AM		 1335 bfd_put_32 (output_bfd, static_value,
1336 htab->elf.sgot->contents + off2);
7ba29e2a
NC		 1337 }
1338 else
69b06cc8 1339 {
ce558b89
AM		 1340 bfd_put_32 (output_bfd, static_value,
1341 htab->elf.sgot->contents + off2);
69b06cc8 1342
ce558b89
AM		 1343 /* Relocs for dyn symbols generated by
1344 finish_dynamic_symbols */
1345 if (bfd_link_pic (info) && h == NULL)
1346 {
1347 *offp |= 1;
1348 microblaze_elf_output_dynamic_relocation
1349 (output_bfd,
1350 htab->elf.srelgot,
1351 htab->elf.srelgot->reloc_count++,
1352 /* symindex= */ indx, R_MICROBLAZE_REL,
1353 got_offset, static_value);
1354 }
69b06cc8 1355 }
7ba29e2a 1356 }
69b06cc8
ME		 1357
1358 /* 4. Fixup Relocation with GOT offset value
1359 Compute relative address of GOT entry for applying
1360 the current relocation */
ce558b89
AM		 1361 relocation = htab->elf.sgot->output_section->vma
1362 + htab->elf.sgot->output_offset
69b06cc8 1363 + off
ce558b89
AM		 1364 - htab->elf.sgotplt->output_section->vma
1365 - htab->elf.sgotplt->output_offset;
69b06cc8
ME		 1366
1367 /* Apply Current Relocation */
7ba29e2a 1368 bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff,
f23200ad 1369 contents + offset + endian);
7ba29e2a 1370 bfd_put_16 (input_bfd, relocation & 0xffff,
f23200ad 1371 contents + offset + endian + INST_WORD_SIZE);
69b06cc8
ME		 1372
1373 unresolved_reloc = FALSE;
7ba29e2a
NC		 1374 break;
1375 }
1376
1377 case (int) R_MICROBLAZE_GOTOFF_64:
1378 {
1379 bfd_vma immediate;
1380 unsigned short lo, high;
1381 relocation += addend;
ce558b89
AM		 1382 relocation -= (htab->elf.sgotplt->output_section->vma
1383 + htab->elf.sgotplt->output_offset);
7ba29e2a
NC		 1384 /* Write this value into correct location. */
1385 immediate = relocation;
1386 lo = immediate & 0x0000ffff;
1387 high = (immediate >> 16) & 0x0000ffff;
f23200ad 1388 bfd_put_16 (input_bfd, high, contents + offset + endian);
ce558b89
AM		 1389 bfd_put_16 (input_bfd, lo,
1390 contents + offset + INST_WORD_SIZE + endian);
7ba29e2a
NC		 1391 break;
1392 }
1393
1394 case (int) R_MICROBLAZE_GOTOFF_32:
1395 {
1396 relocation += addend;
ce558b89
AM		 1397 relocation -= (htab->elf.sgotplt->output_section->vma
1398 + htab->elf.sgotplt->output_offset);
7ba29e2a
NC		 1399 /* Write this value into correct location. */
1400 bfd_put_32 (input_bfd, relocation, contents + offset);
1401 break;
1402 }
1403
69b06cc8
ME		 1404 case (int) R_MICROBLAZE_TLSDTPREL64:
1405 relocation += addend;
1406 relocation -= dtprel_base(info);
1407 bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff,
1408 contents + offset + 2);
1409 bfd_put_16 (input_bfd, relocation & 0xffff,
1410 contents + offset + 2 + INST_WORD_SIZE);
1411 break;
7ba29e2a
NC		 1412 case (int) R_MICROBLAZE_64_PCREL :
1413 case (int) R_MICROBLAZE_64:
1414 case (int) R_MICROBLAZE_32:
1415 {
cf35638d 1416 /* r_symndx will be STN_UNDEF (zero) only for relocs against symbols
7ba29e2a
NC		 1417 from removed linkonce sections, or sections discarded by
1418 a linker script. */
cf35638d 1419 if (r_symndx == STN_UNDEF || (input_section->flags & SEC_ALLOC) == 0)
7ba29e2a
NC		 1420 {
1421 relocation += addend;
1422 if (r_type == R_MICROBLAZE_32)
1423 bfd_put_32 (input_bfd, relocation, contents + offset);
1424 else
1425 {
1426 if (r_type == R_MICROBLAZE_64_PCREL)
1427 relocation -= (input_section->output_section->vma
1428 + input_section->output_offset
1429 + offset + INST_WORD_SIZE);
1430 bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff,
f23200ad 1431 contents + offset + endian);
7ba29e2a 1432 bfd_put_16 (input_bfd, relocation & 0xffff,
f23200ad 1433 contents + offset + endian + INST_WORD_SIZE);
7ba29e2a
NC		 1434 }
1435 break;
1436 }
1437
0e1862bb 1438 if ((bfd_link_pic (info)
7ba29e2a 1439 && (h == NULL
112fef40
L		 1440 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1441 && !resolved_to_zero)
7ba29e2a
NC		 1442 || h->root.type != bfd_link_hash_undefweak)
1443 && (!howto->pc_relative
1444 || (h != NULL
1445 && h->dynindx != -1
1446 && (!info->symbolic
1447 || !h->def_regular))))
0e1862bb 1448 || (!bfd_link_pic (info)
7ba29e2a
NC		 1449 && h != NULL
1450 && h->dynindx != -1
1451 && !h->non_got_ref
1452 && ((h->def_dynamic
1453 && !h->def_regular)
1454 || h->root.type == bfd_link_hash_undefweak
1455 || h->root.type == bfd_link_hash_undefined)))
1456 {
1457 Elf_Internal_Rela outrel;
1458 bfd_byte *loc;
c7e2358a 1459 bfd_boolean skip;
7ba29e2a
NC		 1460
1461 /* When generating a shared object, these relocations
1462 are copied into the output file to be resolved at run
1463 time. */
1464
1465 BFD_ASSERT (sreloc != NULL);
1466
1467 skip = FALSE;
1468
1469 outrel.r_offset =
1470 _bfd_elf_section_offset (output_bfd, info, input_section,
1471 rel->r_offset);
1472 if (outrel.r_offset == (bfd_vma) -1)
1473 skip = TRUE;
1474 else if (outrel.r_offset == (bfd_vma) -2)
c7e2358a 1475 skip = TRUE;
7ba29e2a
NC		 1476 outrel.r_offset += (input_section->output_section->vma
1477 + input_section->output_offset);
1478
1479 if (skip)
1480 memset (&outrel, 0, sizeof outrel);
1481 /* h->dynindx may be -1 if the symbol was marked to
1482 become local. */
1483 else if (h != NULL
1484 && ((! info->symbolic && h->dynindx != -1)
1485 || !h->def_regular))
1486 {
1487 BFD_ASSERT (h->dynindx != -1);
1488 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1489 outrel.r_addend = addend;
1490 }
1491 else
1492 {
1493 if (r_type == R_MICROBLAZE_32)
1494 {
1495 outrel.r_info = ELF32_R_INFO (0, R_MICROBLAZE_REL);
1496 outrel.r_addend = relocation + addend;
1497 }
1498 else
1499 {
1500 BFD_FAIL ();
4eca0228 1501 _bfd_error_handler
7ba29e2a
NC		 1502 (_("%B: probably compiled without -fPIC?"),
1503 input_bfd);
1504 bfd_set_error (bfd_error_bad_value);
1505 return FALSE;
1506 }
1507 }
1508
1509 loc = sreloc->contents;
1510 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1511 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1512 break;
1513 }
1514 else
1515 {
1516 relocation += addend;
1517 if (r_type == R_MICROBLAZE_32)
1518 bfd_put_32 (input_bfd, relocation, contents + offset);
1519 else
1520 {
1521 if (r_type == R_MICROBLAZE_64_PCREL)
1522 relocation -= (input_section->output_section->vma
1523 + input_section->output_offset
1524 + offset + INST_WORD_SIZE);
1525 bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff,
f23200ad 1526 contents + offset + endian);
7ba29e2a 1527 bfd_put_16 (input_bfd, relocation & 0xffff,
f23200ad 1528 contents + offset + endian + INST_WORD_SIZE);
7ba29e2a
NC		 1529 }
1530 break;
1531 }
1532 }
1533
1534 default :
1535 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1536 contents, offset,
1537 relocation, addend);
1538 break;
1539 }
1540 }
1541
1542 check_reloc:
1543
1544 if (r != bfd_reloc_ok)
1545 {
1546 /* FIXME: This should be generic enough to go in a utility. */
1547 const char *name;
1548
1549 if (h != NULL)
1550 name = h->root.root.string;
1551 else
1552 {
1553 name = (bfd_elf_string_from_elf_section
1554 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1555 if (name == NULL || *name == '\0')
1556 name = bfd_section_name (input_bfd, sec);
1557 }
1558
1559 if (errmsg != NULL)
1560 goto common_error;
1561
1562 switch (r)
1563 {
1564 case bfd_reloc_overflow:
1a72702b
AM		 1565 (*info->callbacks->reloc_overflow)
1566 (info, (h ? &h->root : NULL), name, howto->name,
1567 (bfd_vma) 0, input_bfd, input_section, offset);
7ba29e2a
NC		 1568 break;
1569
1570 case bfd_reloc_undefined:
1a72702b
AM		 1571 (*info->callbacks->undefined_symbol)
1572 (info, name, input_bfd, input_section, offset, TRUE);
7ba29e2a
NC		 1573 break;
1574
1575 case bfd_reloc_outofrange:
1576 errmsg = _("internal error: out of range error");
1577 goto common_error;
1578
1579 case bfd_reloc_notsupported:
1580 errmsg = _("internal error: unsupported relocation error");
1581 goto common_error;
1582
1583 case bfd_reloc_dangerous:
1584 errmsg = _("internal error: dangerous error");
1585 goto common_error;
1586
1587 default:
1588 errmsg = _("internal error: unknown error");
1589 /* Fall through. */
1590 common_error:
1a72702b
AM		 1591 (*info->callbacks->warning) (info, errmsg, name, input_bfd,
1592 input_section, offset);
7ba29e2a
NC		 1593 break;
1594 }
1595 }
1596 }
1597
1598 return ret;
1599}
1600\f
1601/* Calculate fixup value for reference. */
1602
1603static int
886e427f 1604calc_fixup (bfd_vma start, bfd_vma size, asection *sec)
7ba29e2a 1605{
886e427f 1606 bfd_vma end = start + size;
7ba29e2a
NC		 1607 int i, fixup = 0;
1608
1609 if (sec == NULL || sec->relax == NULL)
1610 return 0;
1611
1612 /* Look for addr in relax table, total fixup value. */
1613 for (i = 0; i < sec->relax_count; i++)
1614 {
886e427f 1615 if (end <= sec->relax[i].addr)
7ba29e2a 1616 break;
886e427f
ME		 1617 if ((end != start) && (start > sec->relax[i].addr))
1618 continue;
7ba29e2a
NC		 1619 fixup += sec->relax[i].size;
1620 }
7ba29e2a
NC		 1621 return fixup;
1622}
1623
f23200ad
ME		 1624/* Read-modify-write into the bfd, an immediate value into appropriate fields of
1625 a 32-bit instruction. */
1626static void
1627microblaze_bfd_write_imm_value_32 (bfd *abfd, bfd_byte *bfd_addr, bfd_vma val)
1628{
1629 unsigned long instr = bfd_get_32 (abfd, bfd_addr);
1630 instr &= ~0x0000ffff;
1631 instr |= (val & 0x0000ffff);
1632 bfd_put_32 (abfd, instr, bfd_addr);
1633}
1634
1635/* Read-modify-write into the bfd, an immediate value into appropriate fields of
1636 two consecutive 32-bit instructions. */
1637static void
1638microblaze_bfd_write_imm_value_64 (bfd *abfd, bfd_byte *bfd_addr, bfd_vma val)
1639{
1640 unsigned long instr_hi;
1641 unsigned long instr_lo;
1642
1643 instr_hi = bfd_get_32 (abfd, bfd_addr);
1644 instr_hi &= ~0x0000ffff;
1645 instr_hi |= ((val >> 16) & 0x0000ffff);
1646 bfd_put_32 (abfd, instr_hi, bfd_addr);
1647
1648 instr_lo = bfd_get_32 (abfd, bfd_addr + INST_WORD_SIZE);
1649 instr_lo &= ~0x0000ffff;
1650 instr_lo |= (val & 0x0000ffff);
1651 bfd_put_32 (abfd, instr_lo, bfd_addr + INST_WORD_SIZE);
1652}
1653
7ba29e2a
NC		 1654static bfd_boolean
1655microblaze_elf_relax_section (bfd *abfd,
1656 asection *sec,
1657 struct bfd_link_info *link_info,
1658 bfd_boolean *again)
1659{
1660 Elf_Internal_Shdr *symtab_hdr;
1661 Elf_Internal_Rela *internal_relocs;
1662 Elf_Internal_Rela *free_relocs = NULL;
1663 Elf_Internal_Rela *irel, *irelend;
1664 bfd_byte *contents = NULL;
1665 bfd_byte *free_contents = NULL;
1666 int rel_count;
1667 unsigned int shndx;
91d6fa6a 1668 int i, sym_index;
7ba29e2a
NC		 1669 asection *o;
1670 struct elf_link_hash_entry *sym_hash;
1671 Elf_Internal_Sym *isymbuf, *isymend;
1672 Elf_Internal_Sym *isym;
1673 int symcount;
1674 int offset;
1675 bfd_vma src, dest;
1676
1677 /* We only do this once per section. We may be able to delete some code
1678 by running multiple passes, but it is not worth it. */
1679 *again = FALSE;
1680
1681 /* Only do this for a text section. */
0e1862bb 1682 if (bfd_link_relocatable (link_info)
7ba29e2a 1683 || (sec->flags & SEC_RELOC) == 0
f23200ad
ME		 1684 || (sec->reloc_count == 0)
1685 || (sec->flags & SEC_CODE) == 0)
7ba29e2a
NC		 1686 return TRUE;
1687
1688 BFD_ASSERT ((sec->size > 0) || (sec->rawsize > 0));
1689
1690 /* If this is the first time we have been called for this section,
1691 initialize the cooked size. */
1692 if (sec->size == 0)
1693 sec->size = sec->rawsize;
1694
1695 /* Get symbols for this section. */
1696 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1697 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1698 symcount = symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
1699 if (isymbuf == NULL)
1700 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, symcount,
1701 0, NULL, NULL, NULL);
1702 BFD_ASSERT (isymbuf != NULL);
1703
91d6fa6a 1704 internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, link_info->keep_memory);
7ba29e2a
NC		 1705 if (internal_relocs == NULL)
1706 goto error_return;
1707 if (! link_info->keep_memory)
1708 free_relocs = internal_relocs;
1709
1710 sec->relax = (struct relax_table *) bfd_malloc ((sec->reloc_count + 1)
1711 * sizeof (struct relax_table));
1712 if (sec->relax == NULL)
1713 goto error_return;
1714 sec->relax_count = 0;
1715
1716 irelend = internal_relocs + sec->reloc_count;
1717 rel_count = 0;
1718 for (irel = internal_relocs; irel < irelend; irel++, rel_count++)
1719 {
1720 bfd_vma symval;
1721 if ((ELF32_R_TYPE (irel->r_info) != (int) R_MICROBLAZE_64_PCREL)
1722 && (ELF32_R_TYPE (irel->r_info) != (int) R_MICROBLAZE_64 ))
1723 continue; /* Can't delete this reloc. */
1724
1725 /* Get the section contents. */
1726 if (contents == NULL)
1727 {
1728 if (elf_section_data (sec)->this_hdr.contents != NULL)
1729 contents = elf_section_data (sec)->this_hdr.contents;
1730 else
1731 {
1732 contents = (bfd_byte *) bfd_malloc (sec->size);
1733 if (contents == NULL)
1734 goto error_return;
1735 free_contents = contents;
1736
1737 if (!bfd_get_section_contents (abfd, sec, contents,
1738 (file_ptr) 0, sec->size))
1739 goto error_return;
1740 elf_section_data (sec)->this_hdr.contents = contents;
1741 }
1742 }
1743
1744 /* Get the value of the symbol referred to by the reloc. */
1745 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
1746 {
1747 /* A local symbol. */
7ba29e2a
NC		 1748 asection *sym_sec;
1749
1750 isym = isymbuf + ELF32_R_SYM (irel->r_info);
1751 if (isym->st_shndx == SHN_UNDEF)
1752 sym_sec = bfd_und_section_ptr;
1753 else if (isym->st_shndx == SHN_ABS)
1754 sym_sec = bfd_abs_section_ptr;
1755 else if (isym->st_shndx == SHN_COMMON)
1756 sym_sec = bfd_com_section_ptr;
1757 else
1758 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
1759
1760 symval = _bfd_elf_rela_local_sym (abfd, isym, &sym_sec, irel);
1761 }
1762 else
1763 {
1764 unsigned long indx;
1765 struct elf_link_hash_entry *h;
1766
1767 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
1768 h = elf_sym_hashes (abfd)[indx];
1769 BFD_ASSERT (h != NULL);
1770
1771 if (h->root.type != bfd_link_hash_defined
1772 && h->root.type != bfd_link_hash_defweak)
1773 /* This appears to be a reference to an undefined
1774 symbol. Just ignore it--it will be caught by the
1775 regular reloc processing. */
1776 continue;
1777
1778 symval = (h->root.u.def.value
1779 + h->root.u.def.section->output_section->vma
1780 + h->root.u.def.section->output_offset);
1781 }
1782
1783 /* If this is a PC-relative reloc, subtract the instr offset from
1784 the symbol value. */
1785 if (ELF32_R_TYPE (irel->r_info) == (int) R_MICROBLAZE_64_PCREL)
1786 {
1787 symval = symval + irel->r_addend
1788 - (irel->r_offset
1789 + sec->output_section->vma
1790 + sec->output_offset);
1791 }
1792 else
1793 symval += irel->r_addend;
1794
1795 if ((symval & 0xffff8000) == 0
1796 || (symval & 0xffff8000) == 0xffff8000)
1797 {
1798 /* We can delete this instruction. */
1799 sec->relax[sec->relax_count].addr = irel->r_offset;
1800 sec->relax[sec->relax_count].size = INST_WORD_SIZE;
1801 sec->relax_count++;
1802
1803 /* Rewrite relocation type. */
1804 switch ((enum elf_microblaze_reloc_type) ELF32_R_TYPE (irel->r_info))
1805 {
1806 case R_MICROBLAZE_64_PCREL:
1807 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1808 (int) R_MICROBLAZE_32_PCREL_LO);
1809 break;
1810 case R_MICROBLAZE_64:
1811 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1812 (int) R_MICROBLAZE_32_LO);
1813 break;
1814 default:
1815 /* Cannot happen. */
1816 BFD_ASSERT (FALSE);
1817 }
1818 }
1819 } /* Loop through all relocations. */
1820
1821 /* Loop through the relocs again, and see if anything needs to change. */
1822 if (sec->relax_count > 0)
1823 {
1824 shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
1825 rel_count = 0;
1826 sec->relax[sec->relax_count].addr = sec->size;
1827
1828 for (irel = internal_relocs; irel < irelend; irel++, rel_count++)
1829 {
1830 bfd_vma nraddr;
1831
1832 /* Get the new reloc address. */
886e427f 1833 nraddr = irel->r_offset - calc_fixup (irel->r_offset, 0, sec);
7ba29e2a
NC		 1834 switch ((enum elf_microblaze_reloc_type) ELF32_R_TYPE (irel->r_info))
1835 {
1836 default:
1837 break;
1838 case R_MICROBLAZE_64_PCREL:
1839 break;
1840 case R_MICROBLAZE_64:
1841 case R_MICROBLAZE_32_LO:
1842 /* If this reloc is against a symbol defined in this
1843 section, we must check the addend to see it will put the value in
1844 range to be adjusted, and hence must be changed. */
1845 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
1846 {
7ba29e2a
NC		 1847 isym = isymbuf + ELF32_R_SYM (irel->r_info);
1848 /* Only handle relocs against .text. */
1849 if (isym->st_shndx == shndx
1850 && ELF32_ST_TYPE (isym->st_info) == STT_SECTION)
886e427f 1851 irel->r_addend -= calc_fixup (irel->r_addend, 0, sec);
7ba29e2a
NC		 1852 }
1853 break;
1854 case R_MICROBLAZE_NONE:
1855 {
1856 /* This was a PC-relative instruction that was
1857 completely resolved. */
1858 int sfix, efix;
1859 bfd_vma target_address;
1860 target_address = irel->r_addend + irel->r_offset;
886e427f
ME		 1861 sfix = calc_fixup (irel->r_offset, 0, sec);
1862 efix = calc_fixup (target_address, 0, sec);
7ba29e2a
NC		 1863 irel->r_addend -= (efix - sfix);
1864 /* Should use HOWTO. */
f23200ad
ME		 1865 microblaze_bfd_write_imm_value_32 (abfd, contents + irel->r_offset,
1866 irel->r_addend);
7ba29e2a
NC		 1867 }
1868 break;
1869 case R_MICROBLAZE_64_NONE:
1870 {
1871 /* This was a PC-relative 64-bit instruction that was
1872 completely resolved. */
1873 int sfix, efix;
1874 bfd_vma target_address;
1875 target_address = irel->r_addend + irel->r_offset + INST_WORD_SIZE;
886e427f
ME		 1876 sfix = calc_fixup (irel->r_offset + INST_WORD_SIZE, 0, sec);
1877 efix = calc_fixup (target_address, 0, sec);
7ba29e2a 1878 irel->r_addend -= (efix - sfix);
f23200ad
ME		 1879 microblaze_bfd_write_imm_value_32 (abfd, contents + irel->r_offset
1880 + INST_WORD_SIZE, irel->r_addend);
7ba29e2a
NC		 1881 }
1882 break;
1883 }
1884 irel->r_offset = nraddr;
1885 } /* Change all relocs in this section. */
1886
1887 /* Look through all other sections. */
1888 for (o = abfd->sections; o != NULL; o = o->next)
1889 {
91d6fa6a 1890 Elf_Internal_Rela *irelocs;
7ba29e2a
NC		 1891 Elf_Internal_Rela *irelscan, *irelscanend;
1892 bfd_byte *ocontents;
1893
1894 if (o == sec
1895 || (o->flags & SEC_RELOC) == 0
1896 || o->reloc_count == 0)
1897 continue;
1898
1899 /* We always cache the relocs. Perhaps, if info->keep_memory is
1900 FALSE, we should free them, if we are permitted to. */
1901
91d6fa6a
NC		 1902 irelocs = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, TRUE);
1903 if (irelocs == NULL)
7ba29e2a
NC		 1904 goto error_return;
1905
1906 ocontents = NULL;
91d6fa6a
NC		 1907 irelscanend = irelocs + o->reloc_count;
1908 for (irelscan = irelocs; irelscan < irelscanend; irelscan++)
7ba29e2a
NC		 1909 {
1910 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_32)
1911 {
1912 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
1913
1914 /* Look at the reloc only if the value has been resolved. */
1915 if (isym->st_shndx == shndx
1916 && (ELF32_ST_TYPE (isym->st_info) == STT_SECTION))
1917 {
1918 if (ocontents == NULL)
1919 {
1920 if (elf_section_data (o)->this_hdr.contents != NULL)
1921 ocontents = elf_section_data (o)->this_hdr.contents;
1922 else
1923 {
1924 /* We always cache the section contents.
1925 Perhaps, if info->keep_memory is FALSE, we
1926 should free them, if we are permitted to. */
1927 if (o->rawsize == 0)
1928 o->rawsize = o->size;
1929 ocontents = (bfd_byte *) bfd_malloc (o->rawsize);
1930 if (ocontents == NULL)
1931 goto error_return;
1932 if (!bfd_get_section_contents (abfd, o, ocontents,
1933 (file_ptr) 0,
1934 o->rawsize))
1935 goto error_return;
1936 elf_section_data (o)->this_hdr.contents = ocontents;
1937 }
1938
1939 }
886e427f 1940 irelscan->r_addend -= calc_fixup (irelscan->r_addend, 0, sec);
7ba29e2a
NC		 1941 }
1942 else if (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_32_SYM_OP_SYM)
1943 {
1944 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
1945
1946 /* Look at the reloc only if the value has been resolved. */
1947 if (ocontents == NULL)
1948 {
1949 if (elf_section_data (o)->this_hdr.contents != NULL)
1950 ocontents = elf_section_data (o)->this_hdr.contents;
1951 else
1952 {
1953 /* We always cache the section contents.
1954 Perhaps, if info->keep_memory is FALSE, we
1955 should free them, if we are permitted to. */
1956
1957 if (o->rawsize == 0)
1958 o->rawsize = o->size;
1959 ocontents = (bfd_byte *) bfd_malloc (o->rawsize);
1960 if (ocontents == NULL)
1961 goto error_return;
1962 if (!bfd_get_section_contents (abfd, o, ocontents,
1963 (file_ptr) 0,
1964 o->rawsize))
1965 goto error_return;
1966 elf_section_data (o)->this_hdr.contents = ocontents;
1967 }
1968 }
1969 irelscan->r_addend -= calc_fixup (irel->r_addend
1970 + isym->st_value,
886e427f 1971 0,
7ba29e2a
NC		 1972 sec);
1973 }
1974 }
1975 else if ((ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_32_PCREL_LO)
1976 || (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_32_LO))
1977 {
1978 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
1979
1980 /* Look at the reloc only if the value has been resolved. */
1981 if (isym->st_shndx == shndx
1982 && (ELF32_ST_TYPE (isym->st_info) == STT_SECTION))
1983 {
1984 bfd_vma immediate;
1985 bfd_vma target_address;
1986
1987 if (ocontents == NULL)
1988 {
1989 if (elf_section_data (o)->this_hdr.contents != NULL)
1990 ocontents = elf_section_data (o)->this_hdr.contents;
1991 else
1992 {
1993 /* We always cache the section contents.
1994 Perhaps, if info->keep_memory is FALSE, we
1995 should free them, if we are permitted to. */
1996 if (o->rawsize == 0)
1997 o->rawsize = o->size;
1998 ocontents = (bfd_byte *) bfd_malloc (o->rawsize);
1999 if (ocontents == NULL)
2000 goto error_return;
2001 if (!bfd_get_section_contents (abfd, o, ocontents,
2002 (file_ptr) 0,
2003 o->rawsize))
2004 goto error_return;
2005 elf_section_data (o)->this_hdr.contents = ocontents;
2006 }
2007 }
2008
f23200ad
ME		 2009 unsigned long instr = bfd_get_32 (abfd, ocontents + irelscan->r_offset);
2010 immediate = instr & 0x0000ffff;
7ba29e2a 2011 target_address = immediate;
886e427f 2012 offset = calc_fixup (target_address, 0, sec);
7ba29e2a
NC		 2013 immediate -= offset;
2014 irelscan->r_addend -= offset;
f23200ad
ME		 2015 microblaze_bfd_write_imm_value_32 (abfd, ocontents + irelscan->r_offset,
2016 irelscan->r_addend);
7ba29e2a
NC		 2017 }
2018 }
2019
2020 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_64)
2021 {
2022 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
2023
2024 /* Look at the reloc only if the value has been resolved. */
2025 if (isym->st_shndx == shndx
2026 && (ELF32_ST_TYPE (isym->st_info) == STT_SECTION))
2027 {
2028 bfd_vma immediate;
2029
2030 if (ocontents == NULL)
2031 {
2032 if (elf_section_data (o)->this_hdr.contents != NULL)
2033 ocontents = elf_section_data (o)->this_hdr.contents;
2034 else
2035 {
2036 /* We always cache the section contents.
2037 Perhaps, if info->keep_memory is FALSE, we
2038 should free them, if we are permitted to. */
2039
2040 if (o->rawsize == 0)
2041 o->rawsize = o->size;
2042 ocontents = (bfd_byte *) bfd_malloc (o->rawsize);
2043 if (ocontents == NULL)
2044 goto error_return;
2045 if (!bfd_get_section_contents (abfd, o, ocontents,
2046 (file_ptr) 0,
2047 o->rawsize))
2048 goto error_return;
2049 elf_section_data (o)->this_hdr.contents = ocontents;
2050 }
2051 }
f23200ad
ME		 2052 unsigned long instr_hi = bfd_get_32 (abfd, ocontents
2053 + irelscan->r_offset);
2054 unsigned long instr_lo = bfd_get_32 (abfd, ocontents
2055 + irelscan->r_offset
2056 + INST_WORD_SIZE);
2057 immediate = (instr_hi & 0x0000ffff) << 16;
2058 immediate |= (instr_lo & 0x0000ffff);
886e427f 2059 offset = calc_fixup (irelscan->r_addend, 0, sec);
7ba29e2a
NC		 2060 immediate -= offset;
2061 irelscan->r_addend -= offset;
2062 }
2063 }
2064 else if (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_64_PCREL)
2065 {
2066 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
2067
2068 /* Look at the reloc only if the value has been resolved. */
2069 if (isym->st_shndx == shndx
2070 && (ELF32_ST_TYPE (isym->st_info) == STT_SECTION))
2071 {
2072 bfd_vma immediate;
2073 bfd_vma target_address;
2074
2075 if (ocontents == NULL)
2076 {
2077 if (elf_section_data (o)->this_hdr.contents != NULL)
2078 ocontents = elf_section_data (o)->this_hdr.contents;
2079 else
2080 {
2081 /* We always cache the section contents.
2082 Perhaps, if info->keep_memory is FALSE, we
2083 should free them, if we are permitted to. */
2084 if (o->rawsize == 0)
2085 o->rawsize = o->size;
2086 ocontents = (bfd_byte *) bfd_malloc (o->rawsize);
2087 if (ocontents == NULL)
2088 goto error_return;
2089 if (!bfd_get_section_contents (abfd, o, ocontents,
2090 (file_ptr) 0,
2091 o->rawsize))
2092 goto error_return;
2093 elf_section_data (o)->this_hdr.contents = ocontents;
2094 }
2095 }
f23200ad
ME		 2096 unsigned long instr_hi = bfd_get_32 (abfd, ocontents
2097 + irelscan->r_offset);
2098 unsigned long instr_lo = bfd_get_32 (abfd, ocontents
2099 + irelscan->r_offset
2100 + INST_WORD_SIZE);
2101 immediate = (instr_hi & 0x0000ffff) << 16;
2102 immediate |= (instr_lo & 0x0000ffff);
7ba29e2a 2103 target_address = immediate;
886e427f 2104 offset = calc_fixup (target_address, 0, sec);
7ba29e2a
NC		 2105 immediate -= offset;
2106 irelscan->r_addend -= offset;
f23200ad
ME		 2107 microblaze_bfd_write_imm_value_64 (abfd, ocontents
2108 + irelscan->r_offset, immediate);
7ba29e2a
NC		 2109 }
2110 }
2111 }
2112 }
2113
2114 /* Adjust the local symbols defined in this section. */
2115 isymend = isymbuf + symtab_hdr->sh_info;
2116 for (isym = isymbuf; isym < isymend; isym++)
2117 {
2118 if (isym->st_shndx == shndx)
886e427f
ME		 2119 {
2120 isym->st_value -= calc_fixup (isym->st_value, 0, sec);
2121 if (isym->st_size)
2122 isym->st_size -= calc_fixup (isym->st_value, isym->st_size, sec);
2123 }
7ba29e2a
NC		 2124 }
2125
2126 /* Now adjust the global symbols defined in this section. */
2127 isym = isymbuf + symtab_hdr->sh_info;
886e427f
ME		 2128 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)) - symtab_hdr->sh_info;
2129 for (sym_index = 0; sym_index < symcount; sym_index++)
7ba29e2a 2130 {
91d6fa6a 2131 sym_hash = elf_sym_hashes (abfd)[sym_index];
886e427f 2132 if ((sym_hash->root.type == bfd_link_hash_defined
7ba29e2a
NC		 2133 || sym_hash->root.type == bfd_link_hash_defweak)
2134 && sym_hash->root.u.def.section == sec)
886e427f
ME		 2135 {
2136 sym_hash->root.u.def.value -= calc_fixup (sym_hash->root.u.def.value,
2137 0, sec);
2138 if (sym_hash->size)
2139 sym_hash->size -= calc_fixup (sym_hash->root.u.def.value,
2140 sym_hash->size, sec);
2141 }
2142 }
7ba29e2a
NC		 2143
2144 /* Physically move the code and change the cooked size. */
2145 dest = sec->relax[0].addr;
2146 for (i = 0; i < sec->relax_count; i++)
2147 {
2148 int len;
2149 src = sec->relax[i].addr + sec->relax[i].size;
2150 len = sec->relax[i+1].addr - sec->relax[i].addr - sec->relax[i].size;
2151
2152 memmove (contents + dest, contents + src, len);
2153 sec->size -= sec->relax[i].size;
2154 dest += len;
2155 }
2156
2157 elf_section_data (sec)->relocs = internal_relocs;
2158 free_relocs = NULL;
2159
2160 elf_section_data (sec)->this_hdr.contents = contents;
2161 free_contents = NULL;
2162
2163 symtab_hdr->contents = (bfd_byte *) isymbuf;
2164 }
2165
2166 if (free_relocs != NULL)
2167 {
2168 free (free_relocs);
2169 free_relocs = NULL;
2170 }
2171
2172 if (free_contents != NULL)
2173 {
2174 if (!link_info->keep_memory)
2175 free (free_contents);
2176 else
2177 /* Cache the section contents for elf_link_input_bfd. */
2178 elf_section_data (sec)->this_hdr.contents = contents;
2179 free_contents = NULL;
2180 }
2181
2182 if (sec->relax_count == 0)
2183 {
f23200ad 2184 *again = FALSE;
7ba29e2a
NC		 2185 free (sec->relax);
2186 sec->relax = NULL;
2187 }
f23200ad
ME		 2188 else
2189 *again = TRUE;
7ba29e2a
NC		 2190 return TRUE;
2191
2192 error_return:
2193 if (free_relocs != NULL)
2194 free (free_relocs);
2195 if (free_contents != NULL)
2196 free (free_contents);
2197 if (sec->relax != NULL)
2198 {
2199 free (sec->relax);
2200 sec->relax = NULL;
2201 sec->relax_count = 0;
2202 }
2203 return FALSE;
2204}
2205
2206/* Return the section that should be marked against GC for a given
2207 relocation. */
2208
2209static asection *
2210microblaze_elf_gc_mark_hook (asection *sec,
fb34365b 2211 struct bfd_link_info * info,
7ba29e2a
NC		 2212 Elf_Internal_Rela * rel,
2213 struct elf_link_hash_entry * h,
2214 Elf_Internal_Sym * sym)
2215{
2216 if (h != NULL)
fb34365b
AM		 2217 switch (ELF32_R_TYPE (rel->r_info))
2218 {
2219 case R_MICROBLAZE_GNU_VTINHERIT:
2220 case R_MICROBLAZE_GNU_VTENTRY:
2221 return NULL;
2222 }
2223
2224 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
7ba29e2a
NC		 2225}
2226
7ba29e2a
NC		 2227/* PIC support. */
2228
2229#define PLT_ENTRY_SIZE 16
2230
2231#define PLT_ENTRY_WORD_0 0xb0000000 /* "imm 0". */
2232#define PLT_ENTRY_WORD_1 0xe9940000 /* "lwi r12,r20,0" - relocated to lwi r12,r20,func@GOT. */
2233#define PLT_ENTRY_WORD_1_NOPIC 0xe9800000 /* "lwi r12,r0,0" - non-PIC object. */
2234#define PLT_ENTRY_WORD_2 0x98186000 /* "brad r12". */
2235#define PLT_ENTRY_WORD_3 0x80000000 /* "nop". */
2236
69b06cc8
ME		 2237static bfd_boolean
2238update_local_sym_info (bfd *abfd,
2239 Elf_Internal_Shdr *symtab_hdr,
2240 unsigned long r_symndx,
2241 unsigned int tls_type)
2242{
2243 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2244 unsigned char *local_got_tls_masks;
2245
2246 if (local_got_refcounts == NULL)
2247 {
2248 bfd_size_type size = symtab_hdr->sh_info;
2249
2250 size *= (sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks));
2251 local_got_refcounts = bfd_zalloc (abfd, size);
2252 if (local_got_refcounts == NULL)
2253 return FALSE;
2254 elf_local_got_refcounts (abfd) = local_got_refcounts;
2255 }
2256
2257 local_got_tls_masks =
2258 (unsigned char *) (local_got_refcounts + symtab_hdr->sh_info);
2259 local_got_tls_masks[r_symndx] |= tls_type;
2260 local_got_refcounts[r_symndx] += 1;
2261
2262 return TRUE;
2263}
7ba29e2a
NC		 2264/* Look through the relocs for a section during the first phase. */
2265
2266static bfd_boolean
2267microblaze_elf_check_relocs (bfd * abfd,
2268 struct bfd_link_info * info,
2269 asection * sec,
2270 const Elf_Internal_Rela * relocs)
2271{
2272 Elf_Internal_Shdr * symtab_hdr;
2273 struct elf_link_hash_entry ** sym_hashes;
2274 struct elf_link_hash_entry ** sym_hashes_end;
2275 const Elf_Internal_Rela * rel;
2276 const Elf_Internal_Rela * rel_end;
2277 struct elf32_mb_link_hash_table *htab;
7ba29e2a
NC		 2278 asection *sreloc = NULL;
2279
0e1862bb 2280 if (bfd_link_relocatable (info))
7ba29e2a
NC		 2281 return TRUE;
2282
2283 htab = elf32_mb_hash_table (info);
4dfe6ac6
NC		 2284 if (htab == NULL)
2285 return FALSE;
2286
7ba29e2a
NC		 2287 symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
2288 sym_hashes = elf_sym_hashes (abfd);
2289 sym_hashes_end = sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
2290 if (!elf_bad_symtab (abfd))
2291 sym_hashes_end -= symtab_hdr->sh_info;
2292
2293 rel_end = relocs + sec->reloc_count;
2294
2295 for (rel = relocs; rel < rel_end; rel++)
2296 {
2297 unsigned int r_type;
2298 struct elf_link_hash_entry * h;
2299 unsigned long r_symndx;
69b06cc8 2300 unsigned char tls_type = 0;
7ba29e2a
NC		 2301
2302 r_symndx = ELF32_R_SYM (rel->r_info);
2303 r_type = ELF32_R_TYPE (rel->r_info);
2304
2305 if (r_symndx < symtab_hdr->sh_info)
2306 h = NULL;
2307 else
81fbe831
AM		 2308 {
2309 h = sym_hashes [r_symndx - symtab_hdr->sh_info];
b7213666
L		 2310 while (h->root.type == bfd_link_hash_indirect
2311 || h->root.type == bfd_link_hash_warning)
2312 h = (struct elf_link_hash_entry *) h->root.u.i.link;
81fbe831 2313 }
7ba29e2a
NC		 2314
2315 switch (r_type)
2316 {
2317 /* This relocation describes the C++ object vtable hierarchy.
2318 Reconstruct it for later use during GC. */
2319 case R_MICROBLAZE_GNU_VTINHERIT:
2320 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2321 return FALSE;
2322 break;
2323
2324 /* This relocation describes which C++ vtable entries are actually
2325 used. Record for later use during GC. */
2326 case R_MICROBLAZE_GNU_VTENTRY:
2327 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2328 return FALSE;
2329 break;
2330
2331 /* This relocation requires .plt entry. */
2332 case R_MICROBLAZE_PLT_64:
2333 if (h != NULL)
2334 {
2335 h->needs_plt = 1;
2336 h->plt.refcount += 1;
2337 }
2338 break;
2339
2340 /* This relocation requires .got entry. */
69b06cc8
ME		 2341 case R_MICROBLAZE_TLSGD:
2342 tls_type |= (TLS_TLS | TLS_GD);
2343 goto dogottls;
2344 case R_MICROBLAZE_TLSLD:
2345 tls_type |= (TLS_TLS | TLS_LD);
1a0670f3 2346 /* Fall through. */
69b06cc8
ME		 2347 dogottls:
2348 sec->has_tls_reloc = 1;
1a0670f3 2349 /* Fall through. */
7ba29e2a 2350 case R_MICROBLAZE_GOT_64:
ce558b89 2351 if (htab->elf.sgot == NULL)
7ba29e2a
NC		 2352 {
2353 if (htab->elf.dynobj == NULL)
2354 htab->elf.dynobj = abfd;
ce558b89 2355 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
7ba29e2a
NC		 2356 return FALSE;
2357 }
2358 if (h != NULL)
2359 {
2360 h->got.refcount += 1;
69b06cc8 2361 elf32_mb_hash_entry (h)->tls_mask |= tls_type;
7ba29e2a
NC		 2362 }
2363 else
2364 {
69b06cc8
ME		 2365 if (! update_local_sym_info(abfd, symtab_hdr, r_symndx, tls_type) )
2366 return FALSE;
7ba29e2a
NC		 2367 }
2368 break;
2369
206c9c79
AM		 2370 case R_MICROBLAZE_GOTOFF_64:
2371 case R_MICROBLAZE_GOTOFF_32:
2372 if (htab->elf.sgot == NULL)
2373 {
2374 if (htab->elf.dynobj == NULL)
2375 htab->elf.dynobj = abfd;
2376 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
2377 return FALSE;
2378 }
2379 break;
2380
7ba29e2a
NC		 2381 case R_MICROBLAZE_64:
2382 case R_MICROBLAZE_64_PCREL:
2383 case R_MICROBLAZE_32:
2384 {
0e1862bb 2385 if (h != NULL && !bfd_link_pic (info))
7ba29e2a
NC		 2386 {
2387 /* we may need a copy reloc. */
2388 h->non_got_ref = 1;
2389
2390 /* we may also need a .plt entry. */
2391 h->plt.refcount += 1;
2392 if (ELF32_R_TYPE (rel->r_info) != R_MICROBLAZE_64_PCREL)
2393 h->pointer_equality_needed = 1;
2394 }
2395
2396
2397 /* If we are creating a shared library, and this is a reloc
2398 against a global symbol, or a non PC relative reloc
2399 against a local symbol, then we need to copy the reloc
2400 into the shared library. However, if we are linking with
2401 -Bsymbolic, we do not need to copy a reloc against a
2402 global symbol which is defined in an object we are
2403 including in the link (i.e., DEF_REGULAR is set). At
2404 this point we have not seen all the input files, so it is
2405 possible that DEF_REGULAR is not set now but will be set
2406 later (it is never cleared). In case of a weak definition,
2407 DEF_REGULAR may be cleared later by a strong definition in
2408 a shared library. We account for that possibility below by
2409 storing information in the relocs_copied field of the hash
2410 table entry. A similar situation occurs when creating
2411 shared libraries and symbol visibility changes render the
2412 symbol local.
2413
2414 If on the other hand, we are creating an executable, we
2415 may need to keep relocations for symbols satisfied by a
2416 dynamic library if we manage to avoid copy relocs for the
2417 symbol. */
2418
0e1862bb 2419 if ((bfd_link_pic (info)
7ba29e2a
NC		 2420 && (sec->flags & SEC_ALLOC) != 0
2421 && (r_type != R_MICROBLAZE_64_PCREL
2422 || (h != NULL
2423 && (! info->symbolic
2424 || h->root.type == bfd_link_hash_defweak
2425 || !h->def_regular))))
0e1862bb 2426 || (!bfd_link_pic (info)
7ba29e2a
NC		 2427 && (sec->flags & SEC_ALLOC) != 0
2428 && h != NULL
2429 && (h->root.type == bfd_link_hash_defweak
2430 || !h->def_regular)))
2431 {
2432 struct elf32_mb_dyn_relocs *p;
2433 struct elf32_mb_dyn_relocs **head;
2434
2435 /* When creating a shared object, we must copy these
2436 relocs into the output file. We create a reloc
2437 section in dynobj and make room for the reloc. */
2438
2439 if (sreloc == NULL)
2440 {
7ba29e2a 2441 bfd *dynobj;
7ba29e2a
NC		 2442
2443 if (htab->elf.dynobj == NULL)
2444 htab->elf.dynobj = abfd;
2445 dynobj = htab->elf.dynobj;
2446
69b06cc8
ME		 2447 sreloc = _bfd_elf_make_dynamic_reloc_section (sec, dynobj,
2448 2, abfd, 1);
7ba29e2a 2449 if (sreloc == NULL)
69b06cc8 2450 return FALSE;
7ba29e2a
NC		 2451 }
2452
2453 /* If this is a global symbol, we count the number of
2454 relocations we need for this symbol. */
2455 if (h != NULL)
2456 head = &((struct elf32_mb_link_hash_entry *) h)->dyn_relocs;
2457 else
2458 {
2459 /* Track dynamic relocs needed for local syms too.
2460 We really need local syms available to do this
2461 easily. Oh well. */
2462
2463 asection *s;
2464 Elf_Internal_Sym *isym;
918d9742 2465 void *vpp;
7ba29e2a
NC		 2466
2467 isym = bfd_sym_from_r_symndx (&htab->sym_sec,
2468 abfd, r_symndx);
2469 if (isym == NULL)
2470 return FALSE;
2471
2472 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
2473 if (s == NULL)
2474 return FALSE;
2475
918d9742
TT		 2476 vpp = &elf_section_data (s)->local_dynrel;
2477 head = (struct elf32_mb_dyn_relocs **) vpp;
7ba29e2a
NC		 2478 }
2479
2480 p = *head;
2481 if (p == NULL || p->sec != sec)
2482 {
2483 bfd_size_type amt = sizeof *p;
2484 p = ((struct elf32_mb_dyn_relocs *)
2485 bfd_alloc (htab->elf.dynobj, amt));
2486 if (p == NULL)
2487 return FALSE;
2488 p->next = *head;
2489 *head = p;
2490 p->sec = sec;
2491 p->count = 0;
2492 p->pc_count = 0;
2493 }
2494
2495 p->count += 1;
2496 if (r_type == R_MICROBLAZE_64_PCREL)
2497 p->pc_count += 1;
2498 }
2499 }
2500 break;
2501 }
2502 }
2503
2504 return TRUE;
2505}
2506
7ba29e2a
NC		 2507/* Copy the extra info we tack onto an elf_link_hash_entry. */
2508
2509static void
2510microblaze_elf_copy_indirect_symbol (struct bfd_link_info *info,
2511 struct elf_link_hash_entry *dir,
2512 struct elf_link_hash_entry *ind)
2513{
2514 struct elf32_mb_link_hash_entry *edir, *eind;
2515
2516 edir = (struct elf32_mb_link_hash_entry *) dir;
2517 eind = (struct elf32_mb_link_hash_entry *) ind;
2518
2519 if (eind->dyn_relocs != NULL)
2520 {
2521 if (edir->dyn_relocs != NULL)
2522 {
2523 struct elf32_mb_dyn_relocs **pp;
2524 struct elf32_mb_dyn_relocs *p;
2525
2526 if (ind->root.type == bfd_link_hash_indirect)
2527 abort ();
2528
2529 /* Add reloc counts against the weak sym to the strong sym
2530 list. Merge any entries against the same section. */
2531 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2532 {
2533 struct elf32_mb_dyn_relocs *q;
2534
2535 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2536 if (q->sec == p->sec)
2537 {
2538 q->pc_count += p->pc_count;
2539 q->count += p->count;
2540 *pp = p->next;
2541 break;
2542 }
2543 if (q == NULL)
2544 pp = &p->next;
2545 }
2546 *pp = edir->dyn_relocs;
2547 }
2548
2549 edir->dyn_relocs = eind->dyn_relocs;
2550 eind->dyn_relocs = NULL;
2551 }
2552
69b06cc8
ME		 2553 edir->tls_mask |= eind->tls_mask;
2554
7ba29e2a
NC		 2555 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2556}
2557
2558static bfd_boolean
2559microblaze_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2560 struct elf_link_hash_entry *h)
2561{
2562 struct elf32_mb_link_hash_table *htab;
2563 struct elf32_mb_link_hash_entry * eh;
2564 struct elf32_mb_dyn_relocs *p;
5474d94f 2565 asection *s, *srel;
7ba29e2a 2566 unsigned int power_of_two;
7ba29e2a
NC		 2567
2568 htab = elf32_mb_hash_table (info);
4dfe6ac6
NC		 2569 if (htab == NULL)
2570 return FALSE;
7ba29e2a
NC		 2571
2572 /* If this is a function, put it in the procedure linkage table. We
2573 will fill in the contents of the procedure linkage table later,
2574 when we know the address of the .got section. */
2575 if (h->type == STT_FUNC
2576 || h->needs_plt)
2577 {
2578 if (h->plt.refcount <= 0
2579 || SYMBOL_CALLS_LOCAL (info, h)
2580 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2581 && h->root.type == bfd_link_hash_undefweak))
2582 {
2583 /* This case can occur if we saw a PLT reloc in an input
2584 file, but the symbol was never referred to by a dynamic
2585 object, or if all references were garbage collected. In
2586 such a case, we don't actually need to build a procedure
2587 linkage table, and we can just do a PC32 reloc instead. */
2588 h->plt.offset = (bfd_vma) -1;
2589 h->needs_plt = 0;
2590 }
2591
2592 return TRUE;
2593 }
2594 else
2595 /* It's possible that we incorrectly decided a .plt reloc was
2596 needed for an R_MICROBLAZE_64_PCREL reloc to a non-function sym in
2597 check_relocs. We can't decide accurately between function and
2598 non-function syms in check-relocs; Objects loaded later in
2599 the link may change h->type. So fix it now. */
2600 h->plt.offset = (bfd_vma) -1;
2601
2602 /* If this is a weak symbol, and there is a real definition, the
2603 processor independent code will have arranged for us to see the
2604 real definition first, and we can just use the same value. */
60d67dc8 2605 if (h->is_weakalias)
7ba29e2a 2606 {
60d67dc8
AM		 2607 struct elf_link_hash_entry *def = weakdef (h);
2608 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2609 h->root.u.def.section = def->root.u.def.section;
2610 h->root.u.def.value = def->root.u.def.value;
7ba29e2a
NC		 2611 return TRUE;
2612 }
2613
2614 /* This is a reference to a symbol defined by a dynamic object which
2615 is not a function. */
2616
2617 /* If we are creating a shared library, we must presume that the
2618 only references to the symbol are via the global offset table.
2619 For such cases we need not do anything here; the relocations will
2620 be handled correctly by relocate_section. */
0e1862bb 2621 if (bfd_link_pic (info))
7ba29e2a
NC		 2622 return TRUE;
2623
2624 /* If there are no references to this symbol that do not use the
2625 GOT, we don't need to generate a copy reloc. */
2626 if (!h->non_got_ref)
2627 return TRUE;
2628
2629 /* If -z nocopyreloc was given, we won't generate them either. */
2630 if (info->nocopyreloc)
2631 {
2632 h->non_got_ref = 0;
2633 return TRUE;
2634 }
2635
2636 eh = (struct elf32_mb_link_hash_entry *) h;
2637 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2638 {
2639 s = p->sec->output_section;
2640 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2641 break;
2642 }
2643
2644 /* If we didn't find any dynamic relocs in read-only sections, then
2645 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2646 if (p == NULL)
2647 {
2648 h->non_got_ref = 0;
2649 return TRUE;
2650 }
2651
2652 /* We must allocate the symbol in our .dynbss section, which will
2653 become part of the .bss section of the executable. There will be
2654 an entry for this symbol in the .dynsym section. The dynamic
2655 object will contain position independent code, so all references
2656 from the dynamic object to this symbol will go through the global
2657 offset table. The dynamic linker will use the .dynsym entry to
2658 determine the address it must put in the global offset table, so
2659 both the dynamic object and the regular object will refer to the
2660 same memory location for the variable. */
2661
2662 /* We must generate a R_MICROBLAZE_COPY reloc to tell the dynamic linker
2663 to copy the initial value out of the dynamic object and into the
2664 runtime process image. */
5474d94f
AM		 2665 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
2666 {
2667 s = htab->elf.sdynrelro;
2668 srel = htab->elf.sreldynrelro;
2669 }
2670 else
2671 {
2672 s = htab->elf.sdynbss;
2673 srel = htab->elf.srelbss;
2674 }
7ba29e2a
NC		 2675 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2676 {
5474d94f 2677 srel->size += sizeof (Elf32_External_Rela);
7ba29e2a
NC		 2678 h->needs_copy = 1;
2679 }
2680
2681 /* We need to figure out the alignment required for this symbol. I
2682 have no idea how ELF linkers handle this. */
2683 power_of_two = bfd_log2 (h->size);
2684 if (power_of_two > 3)
2685 power_of_two = 3;
2686
7ba29e2a 2687 /* Apply the required alignment. */
5474d94f
AM		 2688 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
2689 if (power_of_two > s->alignment_power)
7ba29e2a 2690 {
5474d94f 2691 if (!bfd_set_section_alignment (s->owner, s, power_of_two))
7ba29e2a
NC		 2692 return FALSE;
2693 }
2694
2695 /* Define the symbol as being at this point in the section. */
5474d94f
AM		 2696 h->root.u.def.section = s;
2697 h->root.u.def.value = s->size;
7ba29e2a
NC		 2698
2699 /* Increment the section size to make room for the symbol. */
5474d94f 2700 s->size += h->size;
7ba29e2a
NC		 2701 return TRUE;
2702}
2703
2704/* Allocate space in .plt, .got and associated reloc sections for
2705 dynamic relocs. */
2706
2707static bfd_boolean
2708allocate_dynrelocs (struct elf_link_hash_entry *h, void * dat)
2709{
2710 struct bfd_link_info *info;
2711 struct elf32_mb_link_hash_table *htab;
2712 struct elf32_mb_link_hash_entry *eh;
2713 struct elf32_mb_dyn_relocs *p;
2714
2715 if (h->root.type == bfd_link_hash_indirect)
2716 return TRUE;
2717
7ba29e2a
NC		 2718 info = (struct bfd_link_info *) dat;
2719 htab = elf32_mb_hash_table (info);
4dfe6ac6
NC		 2720 if (htab == NULL)
2721 return FALSE;
7ba29e2a
NC		 2722
2723 if (htab->elf.dynamic_sections_created
2724 && h->plt.refcount > 0)
2725 {
2726 /* Make sure this symbol is output as a dynamic symbol.
2727 Undefined weak syms won't yet be marked as dynamic. */
2728 if (h->dynindx == -1
2729 && !h->forced_local)
2730 {
2731 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2732 return FALSE;
2733 }
2734
0e1862bb 2735 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
7ba29e2a 2736 {
ce558b89 2737 asection *s = htab->elf.splt;
7ba29e2a
NC		 2738
2739 /* The first entry in .plt is reserved. */
2740 if (s->size == 0)
2741 s->size = PLT_ENTRY_SIZE;
2742
2743 h->plt.offset = s->size;
2744
2745 /* If this symbol is not defined in a regular file, and we are
2746 not generating a shared library, then set the symbol to this
2747 location in the .plt. This is required to make function
2748 pointers compare as equal between the normal executable and
2749 the shared library. */
0e1862bb 2750 if (! bfd_link_pic (info)
7ba29e2a
NC		 2751 && !h->def_regular)
2752 {
2753 h->root.u.def.section = s;
2754 h->root.u.def.value = h->plt.offset;
2755 }
2756
2757 /* Make room for this entry. */
2758 s->size += PLT_ENTRY_SIZE;
2759
2760 /* We also need to make an entry in the .got.plt section, which
2761 will be placed in the .got section by the linker script. */
ce558b89 2762 htab->elf.sgotplt->size += 4;
7ba29e2a
NC		 2763
2764 /* We also need to make an entry in the .rel.plt section. */
ce558b89 2765 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
7ba29e2a
NC		 2766 }
2767 else
2768 {
2769 h->plt.offset = (bfd_vma) -1;
2770 h->needs_plt = 0;
2771 }
2772 }
2773 else
2774 {
2775 h->plt.offset = (bfd_vma) -1;
2776 h->needs_plt = 0;
2777 }
2778
69b06cc8 2779 eh = (struct elf32_mb_link_hash_entry *) h;
7ba29e2a
NC		 2780 if (h->got.refcount > 0)
2781 {
69b06cc8 2782 unsigned int need;
7ba29e2a
NC		 2783 asection *s;
2784
2785 /* Make sure this symbol is output as a dynamic symbol.
2786 Undefined weak syms won't yet be marked as dynamic. */
2787 if (h->dynindx == -1
2788 && !h->forced_local)
2789 {
2790 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2791 return FALSE;
2792 }
2793
69b06cc8
ME		 2794 need = 0;
2795 if ((eh->tls_mask & TLS_TLS) != 0)
2796 {
2797 /* Handle TLS Symbol */
2798 if ((eh->tls_mask & TLS_LD) != 0)
2799 {
2800 if (!eh->elf.def_dynamic)
2801 /* We'll just use htab->tlsld_got.offset. This should
2802 always be the case. It's a little odd if we have
2803 a local dynamic reloc against a non-local symbol. */
2804 htab->tlsld_got.refcount += 1;
2805 else
2806 need += 8;
2807 }
2808 if ((eh->tls_mask & TLS_GD) != 0)
2809 need += 8;
2810 }
2811 else
2812 {
2813 /* Regular (non-TLS) symbol */
2814 need += 4;
2815 }
2816 if (need == 0)
2817 {
2818 h->got.offset = (bfd_vma) -1;
2819 }
2820 else
2821 {
ce558b89 2822 s = htab->elf.sgot;
69b06cc8
ME		 2823 h->got.offset = s->size;
2824 s->size += need;
ce558b89 2825 htab->elf.srelgot->size += need * (sizeof (Elf32_External_Rela) / 4);
69b06cc8 2826 }
7ba29e2a
NC		 2827 }
2828 else
2829 h->got.offset = (bfd_vma) -1;
2830
7ba29e2a
NC		 2831 if (eh->dyn_relocs == NULL)
2832 return TRUE;
2833
2834 /* In the shared -Bsymbolic case, discard space allocated for
2835 dynamic pc-relative relocs against symbols which turn out to be
2836 defined in regular objects. For the normal shared case, discard
2837 space for pc-relative relocs that have become local due to symbol
2838 visibility changes. */
2839
0e1862bb 2840 if (bfd_link_pic (info))
7ba29e2a
NC		 2841 {
2842 if (h->def_regular
2843 && (h->forced_local
2844 || info->symbolic))
2845 {
2846 struct elf32_mb_dyn_relocs **pp;
2847
2848 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2849 {
2850 p->count -= p->pc_count;
2851 p->pc_count = 0;
2852 if (p->count == 0)
2853 *pp = p->next;
2854 else
2855 pp = &p->next;
2856 }
2857 }
112fef40
L		 2858 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2859 eh->dyn_relocs = NULL;
7ba29e2a
NC		 2860 }
2861 else
2862 {
2863 /* For the non-shared case, discard space for relocs against
2864 symbols which turn out to need copy relocs or are not
2865 dynamic. */
2866
2867 if (!h->non_got_ref
2868 && ((h->def_dynamic
2869 && !h->def_regular)
2870 || (htab->elf.dynamic_sections_created
2871 && (h->root.type == bfd_link_hash_undefweak
2872 || h->root.type == bfd_link_hash_undefined))))
2873 {
2874 /* Make sure this symbol is output as a dynamic symbol.
2875 Undefined weak syms won't yet be marked as dynamic. */
2876 if (h->dynindx == -1
2877 && !h->forced_local)
2878 {
2879 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2880 return FALSE;
2881 }
2882
2883 /* If that succeeded, we know we'll be keeping all the
2884 relocs. */
2885 if (h->dynindx != -1)
2886 goto keep;
2887 }
2888
2889 eh->dyn_relocs = NULL;
2890
2891 keep: ;
2892 }
2893
2894 /* Finally, allocate space. */
2895 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2896 {
2897 asection *sreloc = elf_section_data (p->sec)->sreloc;
2898 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2899 }
2900
2901 return TRUE;
2902}
2903
2904/* Set the sizes of the dynamic sections. */
2905
2906static bfd_boolean
2907microblaze_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2908 struct bfd_link_info *info)
2909{
2910 struct elf32_mb_link_hash_table *htab;
2911 bfd *dynobj;
2912 asection *s;
2913 bfd *ibfd;
2914
2915 htab = elf32_mb_hash_table (info);
4dfe6ac6
NC		 2916 if (htab == NULL)
2917 return FALSE;
2918
7ba29e2a
NC		 2919 dynobj = htab->elf.dynobj;
2920 BFD_ASSERT (dynobj != NULL);
2921
2922 /* Set up .got offsets for local syms, and space for local dynamic
2923 relocs. */
c72f2fb2 2924 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7ba29e2a
NC		 2925 {
2926 bfd_signed_vma *local_got;
2927 bfd_signed_vma *end_local_got;
2928 bfd_size_type locsymcount;
2929 Elf_Internal_Shdr *symtab_hdr;
69b06cc8 2930 unsigned char *lgot_masks;
7ba29e2a
NC		 2931 asection *srel;
2932
2933 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2934 continue;
2935
2936 for (s = ibfd->sections; s != NULL; s = s->next)
2937 {
2938 struct elf32_mb_dyn_relocs *p;
2939
2940 for (p = ((struct elf32_mb_dyn_relocs *)
2941 elf_section_data (s)->local_dynrel);
2942 p != NULL;
2943 p = p->next)
2944 {
2945 if (!bfd_is_abs_section (p->sec)
2946 && bfd_is_abs_section (p->sec->output_section))
2947 {
2948 /* Input section has been discarded, either because
2949 it is a copy of a linkonce section or due to
2950 linker script /DISCARD/, so we'll be discarding
2951 the relocs too. */
2952 }
2953 else if (p->count != 0)
2954 {
2955 srel = elf_section_data (p->sec)->sreloc;
2956 srel->size += p->count * sizeof (Elf32_External_Rela);
2957 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2958 info->flags |= DF_TEXTREL;
2959 }
2960 }
2961 }
2962
2963 local_got = elf_local_got_refcounts (ibfd);
2964 if (!local_got)
2965 continue;
2966
2967 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2968 locsymcount = symtab_hdr->sh_info;
2969 end_local_got = local_got + locsymcount;
69b06cc8 2970 lgot_masks = (unsigned char *) end_local_got;
ce558b89
AM		 2971 s = htab->elf.sgot;
2972 srel = htab->elf.srelgot;
7ba29e2a 2973
69b06cc8
ME		 2974 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
2975 {
2976 if (*local_got > 0)
2977 {
2978 unsigned int need = 0;
2979 if ((*lgot_masks & TLS_TLS) != 0)
2980 {
2981 if ((*lgot_masks & TLS_GD) != 0)
2982 need += 8;
2983 if ((*lgot_masks & TLS_LD) != 0)
2984 htab->tlsld_got.refcount += 1;
2985 }
2986 else
2987 need += 4;
2988
2989 if (need == 0)
2990 {
2991 *local_got = (bfd_vma) -1;
2992 }
2993 else
2994 {
2995 *local_got = s->size;
2996 s->size += need;
0e1862bb 2997 if (bfd_link_pic (info))
69b06cc8
ME		 2998 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
2999 }
7ba29e2a
NC		 3000 }
3001 else
3002 *local_got = (bfd_vma) -1;
3003 }
3004 }
3005
3006 /* Allocate global sym .plt and .got entries, and space for global
3007 sym dynamic relocs. */
3008 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
3009
69b06cc8
ME		 3010 if (htab->tlsld_got.refcount > 0)
3011 {
ce558b89
AM		 3012 htab->tlsld_got.offset = htab->elf.sgot->size;
3013 htab->elf.sgot->size += 8;
0e1862bb 3014 if (bfd_link_pic (info))
ce558b89 3015 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
69b06cc8
ME		 3016 }
3017 else
3018 htab->tlsld_got.offset = (bfd_vma) -1;
3019
7ba29e2a
NC		 3020 if (elf_hash_table (info)->dynamic_sections_created)
3021 {
3022 /* Make space for the trailing nop in .plt. */
ce558b89
AM		 3023 if (htab->elf.splt->size > 0)
3024 htab->elf.splt->size += 4;
7ba29e2a
NC		 3025 }
3026
3027 /* The check_relocs and adjust_dynamic_symbol entry points have
3028 determined the sizes of the various dynamic sections. Allocate
3029 memory for them. */
3030 for (s = dynobj->sections; s != NULL; s = s->next)
3031 {
3032 const char *name;
3033 bfd_boolean strip = FALSE;
3034
3035 if ((s->flags & SEC_LINKER_CREATED) == 0)
3036 continue;
3037
3038 /* It's OK to base decisions on the section name, because none
3039 of the dynobj section names depend upon the input files. */
3040 name = bfd_get_section_name (dynobj, s);
3041
3042 if (strncmp (name, ".rela", 5) == 0)
3043 {
3044 if (s->size == 0)
3045 {
3046 /* If we don't need this section, strip it from the
3047 output file. This is to handle .rela.bss and
3048 .rela.plt. We must create it in
3049 create_dynamic_sections, because it must be created
3050 before the linker maps input sections to output
3051 sections. The linker does that before
3052 adjust_dynamic_symbol is called, and it is that
3053 function which decides whether anything needs to go
3054 into these sections. */
3055 strip = TRUE;
3056 }
3057 else
3058 {
3059 /* We use the reloc_count field as a counter if we need
3060 to copy relocs into the output file. */
3061 s->reloc_count = 0;
3062 }
3063 }
ce558b89
AM		 3064 else if (s != htab->elf.splt
3065 && s != htab->elf.sgot
5474d94f
AM		 3066 && s != htab->elf.sgotplt
3067 && s != htab->elf.sdynbss
3068 && s != htab->elf.sdynrelro)
7ba29e2a
NC		 3069 {
3070 /* It's not one of our sections, so don't allocate space. */
3071 continue;
3072 }
3073
3074 if (strip)
3075 {
3076 s->flags |= SEC_EXCLUDE;
3077 continue;
3078 }
3079
3080 /* Allocate memory for the section contents. */
3081 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
3082 Unused entries should be reclaimed before the section's contents
3083 are written out, but at the moment this does not happen. Thus in
3084 order to prevent writing out garbage, we initialise the section's
3085 contents to zero. */
3086 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3087 if (s->contents == NULL && s->size != 0)
3088 return FALSE;
3089 }
3090
3091 if (elf_hash_table (info)->dynamic_sections_created)
3092 {
3093 /* Add some entries to the .dynamic section. We fill in the
3094 values later, in microblaze_elf_finish_dynamic_sections, but we
3095 must add the entries now so that we get the correct size for
3096 the .dynamic section. The DT_DEBUG entry is filled in by the
3097 dynamic linker and used by the debugger. */
3098#define add_dynamic_entry(TAG, VAL) \
3099 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3100
0e1862bb 3101 if (bfd_link_executable (info))
7ba29e2a
NC		 3102 {
3103 if (!add_dynamic_entry (DT_DEBUG, 0))
3104 return FALSE;
3105 }
3106
3107 if (!add_dynamic_entry (DT_RELA, 0)
3108 || !add_dynamic_entry (DT_RELASZ, 0)
3109 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3110 return FALSE;
3111
ce558b89 3112 if (htab->elf.splt->size != 0)
7ba29e2a
NC		 3113 {
3114 if (!add_dynamic_entry (DT_PLTGOT, 0)
3115 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3116 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3117 || !add_dynamic_entry (DT_JMPREL, 0)
3118 || !add_dynamic_entry (DT_BIND_NOW, 1))
3119 return FALSE;
3120 }
3121
3122 if (info->flags & DF_TEXTREL)
3123 {
3124 if (!add_dynamic_entry (DT_TEXTREL, 0))
3125 return FALSE;
3126 }
3127 }
3128#undef add_dynamic_entry
3129 return TRUE;
3130}
3131
3132/* Finish up dynamic symbol handling. We set the contents of various
3133 dynamic sections here. */
3134
3135static bfd_boolean
3136microblaze_elf_finish_dynamic_symbol (bfd *output_bfd,
3137 struct bfd_link_info *info,
3138 struct elf_link_hash_entry *h,
3139 Elf_Internal_Sym *sym)
3140{
7ba29e2a 3141 struct elf32_mb_link_hash_table *htab;
69b06cc8 3142 struct elf32_mb_link_hash_entry *eh = elf32_mb_hash_entry(h);
7ba29e2a
NC		 3143
3144 htab = elf32_mb_hash_table (info);
4dfe6ac6
NC		 3145 if (htab == NULL)
3146 return FALSE;
3147
7ba29e2a
NC		 3148 if (h->plt.offset != (bfd_vma) -1)
3149 {
3150 asection *splt;
3151 asection *srela;
3152 asection *sgotplt;
3153 Elf_Internal_Rela rela;
3154 bfd_byte *loc;
3155 bfd_vma plt_index;
3156 bfd_vma got_offset;
3157 bfd_vma got_addr;
3158
3159 /* This symbol has an entry in the procedure linkage table. Set
3160 it up. */
3161 BFD_ASSERT (h->dynindx != -1);
3162
ce558b89
AM		 3163 splt = htab->elf.splt;
3164 srela = htab->elf.srelplt;
3165 sgotplt = htab->elf.sgotplt;
7ba29e2a
NC		 3166 BFD_ASSERT (splt != NULL && srela != NULL && sgotplt != NULL);
3167
3168 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; /* first entry reserved. */
3169 got_offset = (plt_index + 3) * 4; /* 3 reserved ??? */
3170 got_addr = got_offset;
3171
3172 /* For non-PIC objects we need absolute address of the GOT entry. */
0e1862bb 3173 if (!bfd_link_pic (info))
ce558b89 3174 got_addr += sgotplt->output_section->vma + sgotplt->output_offset;
7ba29e2a
NC		 3175
3176 /* Fill in the entry in the procedure linkage table. */
3177 bfd_put_32 (output_bfd, PLT_ENTRY_WORD_0 + ((got_addr >> 16) & 0xffff),
3178 splt->contents + h->plt.offset);
0e1862bb 3179 if (bfd_link_pic (info))
7ba29e2a
NC		 3180 bfd_put_32 (output_bfd, PLT_ENTRY_WORD_1 + (got_addr & 0xffff),
3181 splt->contents + h->plt.offset + 4);
3182 else
3183 bfd_put_32 (output_bfd, PLT_ENTRY_WORD_1_NOPIC + (got_addr & 0xffff),
3184 splt->contents + h->plt.offset + 4);
3185 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD_2,
3186 splt->contents + h->plt.offset + 8);
3187 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD_3,
3188 splt->contents + h->plt.offset + 12);
3189
3190 /* Any additions to the .got section??? */
3191 /* bfd_put_32 (output_bfd,
3192 splt->output_section->vma + splt->output_offset + h->plt.offset + 4,
3193 sgotplt->contents + got_offset); */
3194
3195 /* Fill in the entry in the .rela.plt section. */
3196 rela.r_offset = (sgotplt->output_section->vma
3197 + sgotplt->output_offset
3198 + got_offset);
3199 rela.r_info = ELF32_R_INFO (h->dynindx, R_MICROBLAZE_JUMP_SLOT);
3200 rela.r_addend = 0;
3201 loc = srela->contents;
3202 loc += plt_index * sizeof (Elf32_External_Rela);
3203 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3204
3205 if (!h->def_regular)
3206 {
3207 /* Mark the symbol as undefined, rather than as defined in
3208 the .plt section. Zero the value. */
3209 sym->st_shndx = SHN_UNDEF;
3210 sym->st_value = 0;
3211 }
3212 }
3213
69b06cc8
ME		 3214 /* h->got.refcount to be checked ? */
3215 if (h->got.offset != (bfd_vma) -1 &&
3216 ! ((h->got.offset & 1) ||
3217 IS_TLS_LD(eh->tls_mask) || IS_TLS_GD(eh->tls_mask)))
7ba29e2a
NC		 3218 {
3219 asection *sgot;
3220 asection *srela;
69b06cc8 3221 bfd_vma offset;
7ba29e2a
NC		 3222
3223 /* This symbol has an entry in the global offset table. Set it
3224 up. */
3225
ce558b89
AM		 3226 sgot = htab->elf.sgot;
3227 srela = htab->elf.srelgot;
7ba29e2a
NC		 3228 BFD_ASSERT (sgot != NULL && srela != NULL);
3229
69b06cc8 3230 offset = (sgot->output_section->vma + sgot->output_offset
47993b4a 3231 + (h->got.offset &~ (bfd_vma) 1));
7ba29e2a
NC		 3232
3233 /* If this is a -Bsymbolic link, and the symbol is defined
3234 locally, we just want to emit a RELATIVE reloc. Likewise if
3235 the symbol was forced to be local because of a version file.
3236 The entry in the global offset table will already have been
3237 initialized in the relocate_section function. */
0e1862bb 3238 if (bfd_link_pic (info)
47993b4a
RF		 3239 && ((info->symbolic && h->def_regular)
3240 || h->dynindx == -1))
7ba29e2a
NC		 3241 {
3242 asection *sec = h->root.u.def.section;
bd757ca7
NC		 3243 bfd_vma value;
3244
3245 value = h->root.u.def.value;
3246 if (sec->output_section != NULL)
3247 /* PR 21180: If the output section is NULL, then the symbol is no
3248 longer needed, and in theory the GOT entry is redundant. But
3249 it is too late to change our minds now... */
3250 value += sec->output_section->vma + sec->output_offset;
3251
69b06cc8
ME		 3252 microblaze_elf_output_dynamic_relocation (output_bfd,
3253 srela, srela->reloc_count++,
3254 /* symindex= */ 0,
3255 R_MICROBLAZE_REL, offset,
bd757ca7 3256 value);
7ba29e2a
NC		 3257 }
3258 else
3259 {
69b06cc8
ME		 3260 microblaze_elf_output_dynamic_relocation (output_bfd,
3261 srela, srela->reloc_count++,
3262 h->dynindx,
3263 R_MICROBLAZE_GLOB_DAT,
3264 offset, 0);
7ba29e2a
NC		 3265 }
3266
3267 bfd_put_32 (output_bfd, (bfd_vma) 0,
3268 sgot->contents + (h->got.offset &~ (bfd_vma) 1));
7ba29e2a
NC		 3269 }
3270
3271 if (h->needs_copy)
3272 {
3273 asection *s;
3274 Elf_Internal_Rela rela;
3275 bfd_byte *loc;
3276
3277 /* This symbols needs a copy reloc. Set it up. */
3278
3279 BFD_ASSERT (h->dynindx != -1);
3280
7ba29e2a
NC		 3281 rela.r_offset = (h->root.u.def.value
3282 + h->root.u.def.section->output_section->vma
3283 + h->root.u.def.section->output_offset);
3284 rela.r_info = ELF32_R_INFO (h->dynindx, R_MICROBLAZE_COPY);
3285 rela.r_addend = 0;
afbf7e8e 3286 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 3287 s = htab->elf.sreldynrelro;
3288 else
3289 s = htab->elf.srelbss;
7ba29e2a
NC		 3290 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
3291 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3292 }
3293
3294 /* Mark some specially defined symbols as absolute. */
9637f6ef
L		 3295 if (h == htab->elf.hdynamic
3296 || h == htab->elf.hgot
3297 || h == htab->elf.hplt)
7ba29e2a
NC		 3298 sym->st_shndx = SHN_ABS;
3299
3300 return TRUE;
3301}
3302
3303
3304/* Finish up the dynamic sections. */
3305
3306static bfd_boolean
3307microblaze_elf_finish_dynamic_sections (bfd *output_bfd,
3308 struct bfd_link_info *info)
3309{
3310 bfd *dynobj;
3311 asection *sdyn, *sgot;
3312 struct elf32_mb_link_hash_table *htab;
3313
3314 htab = elf32_mb_hash_table (info);
4dfe6ac6
NC		 3315 if (htab == NULL)
3316 return FALSE;
3317
7ba29e2a
NC		 3318 dynobj = htab->elf.dynobj;
3319
3d4d4302 3320 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
7ba29e2a
NC		 3321
3322 if (htab->elf.dynamic_sections_created)
3323 {
3324 asection *splt;
3325 Elf32_External_Dyn *dyncon, *dynconend;
3326
7ba29e2a
NC		 3327 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3328 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3329 for (; dyncon < dynconend; dyncon++)
3330 {
3331 Elf_Internal_Dyn dyn;
64f52338 3332 asection *s;
7ba29e2a
NC		 3333 bfd_boolean size;
3334
3335 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3336
3337 switch (dyn.d_tag)
3338 {
64f52338
AM		 3339 case DT_PLTGOT:
3340 s = htab->elf.sgotplt;
3341 size = FALSE;
3342 break;
7ba29e2a 3343
64f52338
AM		 3344 case DT_PLTRELSZ:
3345 s = htab->elf.srelplt;
3346 size = TRUE;
3347 break;
7ba29e2a 3348
64f52338
AM		 3349 case DT_JMPREL:
3350 s = htab->elf.srelplt;
3351 size = FALSE;
3352 break;
3353
3354 default:
3355 continue;
7ba29e2a 3356 }
64f52338
AM		 3357
3358 if (s == NULL)
3359 dyn.d_un.d_val = 0;
3360 else
3361 {
3362 if (!size)
3363 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3364 else
3365 dyn.d_un.d_val = s->size;
3366 }
3367 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
7ba29e2a
NC		 3368 }
3369
64f52338
AM		 3370 splt = htab->elf.splt;
3371 BFD_ASSERT (splt != NULL && sdyn != NULL);
3372
7ba29e2a
NC		 3373 /* Clear the first entry in the procedure linkage table,
3374 and put a nop in the last four bytes. */
3375 if (splt->size > 0)
3376 {
3377 memset (splt->contents, 0, PLT_ENTRY_SIZE);
3378 bfd_put_32 (output_bfd, (bfd_vma) 0x80000000 /* nop. */,
3379 splt->contents + splt->size - 4);
3380 }
3381
3382 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
3383 }
3384
3385 /* Set the first entry in the global offset table to the address of
3386 the dynamic section. */
ce558b89 3387 sgot = htab->elf.sgotplt;
7ba29e2a
NC		 3388 if (sgot && sgot->size > 0)
3389 {
3390 if (sdyn == NULL)
3391 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
3392 else
3393 bfd_put_32 (output_bfd,
3394 sdyn->output_section->vma + sdyn->output_offset,
3395 sgot->contents);
3396 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
3397 }
3398
ce558b89
AM		 3399 if (htab->elf.sgot && htab->elf.sgot->size > 0)
3400 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
7ba29e2a
NC		 3401
3402 return TRUE;
3403}
3404
3405/* Hook called by the linker routine which adds symbols from an object
3406 file. We use it to put .comm items in .sbss, and not .bss. */
3407
3408static bfd_boolean
3409microblaze_elf_add_symbol_hook (bfd *abfd,
3410 struct bfd_link_info *info,
3411 Elf_Internal_Sym *sym,
3412 const char **namep ATTRIBUTE_UNUSED,
3413 flagword *flagsp ATTRIBUTE_UNUSED,
3414 asection **secp,
3415 bfd_vma *valp)
3416{
3417 if (sym->st_shndx == SHN_COMMON
0e1862bb 3418 && !bfd_link_relocatable (info)
7ba29e2a
NC		 3419 && sym->st_size <= elf_gp_size (abfd))
3420 {
3421 /* Common symbols less than or equal to -G nn bytes are automatically
3422 put into .sbss. */
3d4d4302 3423 *secp = bfd_make_section_old_way (abfd, ".sbss");
7ba29e2a
NC		 3424 if (*secp == NULL
3425 || ! bfd_set_section_flags (abfd, *secp, SEC_IS_COMMON))
3426 return FALSE;
3427
3428 *valp = sym->st_size;
3429 }
3430
3431 return TRUE;
3432}
3433
6d00b590 3434#define TARGET_LITTLE_SYM microblaze_elf32_le_vec
f23200ad 3435#define TARGET_LITTLE_NAME "elf32-microblazeel"
7ba29e2a 3436
6d00b590 3437#define TARGET_BIG_SYM microblaze_elf32_vec
7ba29e2a
NC		 3438#define TARGET_BIG_NAME "elf32-microblaze"
3439
3440#define ELF_ARCH bfd_arch_microblaze
ae95ffa6 3441#define ELF_TARGET_ID MICROBLAZE_ELF_DATA
7ba29e2a
NC		 3442#define ELF_MACHINE_CODE EM_MICROBLAZE
3443#define ELF_MACHINE_ALT1 EM_MICROBLAZE_OLD
69b06cc8 3444#define ELF_MAXPAGESIZE 0x1000
7ba29e2a
NC		 3445#define elf_info_to_howto microblaze_elf_info_to_howto
3446#define elf_info_to_howto_rel NULL
3447
3448#define bfd_elf32_bfd_reloc_type_lookup microblaze_elf_reloc_type_lookup
3449#define bfd_elf32_bfd_is_local_label_name microblaze_elf_is_local_label_name
3450#define elf_backend_relocate_section microblaze_elf_relocate_section
3451#define bfd_elf32_bfd_relax_section microblaze_elf_relax_section
1047201f 3452#define bfd_elf32_bfd_merge_private_bfd_data _bfd_generic_verify_endian_match
7ba29e2a
NC		 3453#define bfd_elf32_bfd_reloc_name_lookup microblaze_elf_reloc_name_lookup
3454
3455#define elf_backend_gc_mark_hook microblaze_elf_gc_mark_hook
7ba29e2a
NC		 3456#define elf_backend_check_relocs microblaze_elf_check_relocs
3457#define elf_backend_copy_indirect_symbol microblaze_elf_copy_indirect_symbol
3458#define bfd_elf32_bfd_link_hash_table_create microblaze_elf_link_hash_table_create
3459#define elf_backend_can_gc_sections 1
3460#define elf_backend_can_refcount 1
3461#define elf_backend_want_got_plt 1
3462#define elf_backend_plt_readonly 1
3463#define elf_backend_got_header_size 12
5474d94f 3464#define elf_backend_want_dynrelro 1
7ba29e2a 3465#define elf_backend_rela_normal 1
64f52338 3466#define elf_backend_dtrel_excludes_plt 1
7ba29e2a
NC		 3467
3468#define elf_backend_adjust_dynamic_symbol microblaze_elf_adjust_dynamic_symbol
9d19e4fd 3469#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
7ba29e2a
NC		 3470#define elf_backend_finish_dynamic_sections microblaze_elf_finish_dynamic_sections
3471#define elf_backend_finish_dynamic_symbol microblaze_elf_finish_dynamic_symbol
3472#define elf_backend_size_dynamic_sections microblaze_elf_size_dynamic_sections
3473#define elf_backend_add_symbol_hook microblaze_elf_add_symbol_hook
3474
3475#include "elf32-target.h"
GDB Binutils - Deliverables
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