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Two fixes in dwarf-mode.el
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3b55e94a 1/* ADI Blackfin BFD support for 32-bit ELF.
b3adc24a 2 Copyright (C) 2005-2020 Free Software Foundation, Inc.
0f64bb02
CM
3
4 This file is part of BFD, the Binary File Descriptor library.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
cd123cb7 8 the Free Software Foundation; either version 3 of the License, or
0f64bb02
CM
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
cd123cb7
NC
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
0f64bb02 20
0f64bb02 21#include "sysdep.h"
3db64b00 22#include "bfd.h"
0f64bb02
CM
23#include "libbfd.h"
24#include "elf-bfd.h"
25#include "elf/bfin.h"
fa8f86ff 26#include "dwarf2.h"
48d502e1 27#include "hashtab.h"
8410a658 28#include "elf32-bfin.h"
0f64bb02 29
0f64bb02
CM
30/* FUNCTION : bfin_pltpc_reloc
31 ABSTRACT : TODO : figure out how to handle pltpc relocs. */
32static bfd_reloc_status_type
33bfin_pltpc_reloc (
34 bfd *abfd ATTRIBUTE_UNUSED,
35 arelent *reloc_entry ATTRIBUTE_UNUSED,
36 asymbol *symbol ATTRIBUTE_UNUSED,
2c3fc389 37 void * data ATTRIBUTE_UNUSED,
0f64bb02
CM
38 asection *input_section ATTRIBUTE_UNUSED,
39 bfd *output_bfd ATTRIBUTE_UNUSED,
3b55e94a 40 char **error_message ATTRIBUTE_UNUSED)
0f64bb02
CM
41{
42 bfd_reloc_status_type flag = bfd_reloc_ok;
3b55e94a 43 return flag;
0f64bb02
CM
44}
45\f
46
47static bfd_reloc_status_type
48bfin_pcrel24_reloc (bfd *abfd,
07d6d2b8
AM
49 arelent *reloc_entry,
50 asymbol *symbol,
51 void * data,
52 asection *input_section,
53 bfd *output_bfd,
54 char **error_message ATTRIBUTE_UNUSED)
0f64bb02
CM
55{
56 bfd_vma relocation;
57 bfd_size_type addr = reloc_entry->address;
58 bfd_vma output_base = 0;
59 reloc_howto_type *howto = reloc_entry->howto;
60 asection *output_section;
61 bfd_boolean relocatable = (output_bfd != NULL);
62
63 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
64 return bfd_reloc_outofrange;
65
3b55e94a
BS
66 if (bfd_is_und_section (symbol->section)
67 && (symbol->flags & BSF_WEAK) == 0
68 && !relocatable)
69 return bfd_reloc_undefined;
70
71 if (bfd_is_com_section (symbol->section))
72 relocation = 0;
0f64bb02 73 else
3b55e94a 74 relocation = symbol->value;
0f64bb02 75
3b55e94a
BS
76 output_section = symbol->section->output_section;
77
78 if (relocatable)
79 output_base = 0;
80 else
81 output_base = output_section->vma;
82
83 if (!relocatable || !strcmp (symbol->name, symbol->section->name))
84 relocation += output_base + symbol->section->output_offset;
0f64bb02 85
3b55e94a
BS
86 if (!relocatable && !strcmp (symbol->name, symbol->section->name))
87 relocation += reloc_entry->addend;
0f64bb02 88
0f64bb02
CM
89 relocation -= input_section->output_section->vma + input_section->output_offset;
90 relocation -= reloc_entry->address;
91
92 if (howto->complain_on_overflow != complain_overflow_dont)
93 {
94 bfd_reloc_status_type status;
3b55e94a
BS
95 status = bfd_check_overflow (howto->complain_on_overflow,
96 howto->bitsize,
97 howto->rightshift,
98 bfd_arch_bits_per_address(abfd),
99 relocation);
0f64bb02
CM
100 if (status != bfd_reloc_ok)
101 return status;
102 }
3b55e94a 103
0f64bb02
CM
104 /* if rightshift is 1 and the number odd, return error. */
105 if (howto->rightshift && (relocation & 0x01))
106 {
4eca0228 107 _bfd_error_handler (_("relocation should be even number"));
0f64bb02
CM
108 return bfd_reloc_overflow;
109 }
110
111 relocation >>= (bfd_vma) howto->rightshift;
112 /* Shift everything up to where it's going to be used. */
113
114 relocation <<= (bfd_vma) howto->bitpos;
115
116 if (relocatable)
117 {
118 reloc_entry->address += input_section->output_offset;
119 reloc_entry->addend += symbol->section->output_offset;
120 }
121
122 {
123 short x;
124
125 /* We are getting reloc_entry->address 2 byte off from
3b55e94a
BS
126 the start of instruction. Assuming absolute postion
127 of the reloc data. But, following code had been written assuming
128 reloc address is starting at begining of instruction.
129 To compensate that I have increased the value of
130 relocation by 1 (effectively 2) and used the addr -2 instead of addr. */
0f64bb02
CM
131
132 relocation += 1;
133 x = bfd_get_16 (abfd, (bfd_byte *) data + addr - 2);
134 x = (x & 0xff00) | ((relocation >> 16) & 0xff);
135 bfd_put_16 (abfd, x, (unsigned char *) data + addr - 2);
136
137 x = bfd_get_16 (abfd, (bfd_byte *) data + addr);
138 x = relocation & 0xFFFF;
139 bfd_put_16 (abfd, x, (unsigned char *) data + addr );
140 }
141 return bfd_reloc_ok;
142}
143
144static bfd_reloc_status_type
3b55e94a 145bfin_imm16_reloc (bfd *abfd,
4b24dd1a
AM
146 arelent *reloc_entry,
147 asymbol *symbol,
148 void * data,
149 asection *input_section,
150 bfd *output_bfd,
151 char **error_message ATTRIBUTE_UNUSED)
0f64bb02 152{
3b55e94a
BS
153 bfd_vma relocation, x;
154 bfd_size_type reloc_addr = reloc_entry->address;
0f64bb02 155 bfd_vma output_base = 0;
3b55e94a 156 reloc_howto_type *howto = reloc_entry->howto;
0f64bb02
CM
157 asection *output_section;
158 bfd_boolean relocatable = (output_bfd != NULL);
159
3b55e94a
BS
160 /* Is the address of the relocation really within the section? */
161 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
162 return bfd_reloc_outofrange;
163
0f64bb02
CM
164 if (bfd_is_und_section (symbol->section)
165 && (symbol->flags & BSF_WEAK) == 0
166 && !relocatable)
167 return bfd_reloc_undefined;
168
0f64bb02 169 output_section = symbol->section->output_section;
3b55e94a 170 relocation = symbol->value;
0f64bb02
CM
171
172 /* Convert input-section-relative symbol value to absolute. */
173 if (relocatable)
174 output_base = 0;
175 else
176 output_base = output_section->vma;
177
3b55e94a 178 if (!relocatable || !strcmp (symbol->name, symbol->section->name))
0f64bb02
CM
179 relocation += output_base + symbol->section->output_offset;
180
181 /* Add in supplied addend. */
182 relocation += reloc_entry->addend;
183
184 if (relocatable)
185 {
186 reloc_entry->address += input_section->output_offset;
187 reloc_entry->addend += symbol->section->output_offset;
188 }
0f64bb02
CM
189 else
190 {
191 reloc_entry->addend = 0;
192 }
193
194 if (howto->complain_on_overflow != complain_overflow_dont)
195 {
196 bfd_reloc_status_type flag;
197 flag = bfd_check_overflow (howto->complain_on_overflow,
3b55e94a
BS
198 howto->bitsize,
199 howto->rightshift,
200 bfd_arch_bits_per_address(abfd),
201 relocation);
0f64bb02 202 if (flag != bfd_reloc_ok)
3b55e94a 203 return flag;
0f64bb02
CM
204 }
205
0f64bb02
CM
206 /* Here the variable relocation holds the final address of the
207 symbol we are relocating against, plus any addend. */
208
0f64bb02
CM
209 relocation >>= (bfd_vma) howto->rightshift;
210 x = relocation;
211 bfd_put_16 (abfd, x, (unsigned char *) data + reloc_addr);
212 return bfd_reloc_ok;
213}
214
215
216static bfd_reloc_status_type
217bfin_byte4_reloc (bfd *abfd,
07d6d2b8
AM
218 arelent *reloc_entry,
219 asymbol *symbol,
220 void * data,
221 asection *input_section,
222 bfd *output_bfd,
223 char **error_message ATTRIBUTE_UNUSED)
0f64bb02
CM
224{
225 bfd_vma relocation, x;
226 bfd_size_type addr = reloc_entry->address;
227 bfd_vma output_base = 0;
228 asection *output_section;
229 bfd_boolean relocatable = (output_bfd != NULL);
230
231 /* Is the address of the relocation really within the section? */
232 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
233 return bfd_reloc_outofrange;
234
3b55e94a
BS
235 if (bfd_is_und_section (symbol->section)
236 && (symbol->flags & BSF_WEAK) == 0
237 && !relocatable)
238 return bfd_reloc_undefined;
0f64bb02 239
3b55e94a
BS
240 output_section = symbol->section->output_section;
241 relocation = symbol->value;
242 /* Convert input-section-relative symbol value to absolute. */
243 if (relocatable)
244 output_base = 0;
0f64bb02 245 else
3b55e94a
BS
246 output_base = output_section->vma;
247
248 if ((symbol->name
249 && symbol->section->name
250 && !strcmp (symbol->name, symbol->section->name))
251 || !relocatable)
0f64bb02 252 {
3b55e94a 253 relocation += output_base + symbol->section->output_offset;
0f64bb02
CM
254 }
255
3b55e94a
BS
256 relocation += reloc_entry->addend;
257
0f64bb02 258 if (relocatable)
3b55e94a 259 {
0f64bb02
CM
260 /* This output will be relocatable ... like ld -r. */
261 reloc_entry->address += input_section->output_offset;
262 reloc_entry->addend += symbol->section->output_offset;
263 }
264 else
265 {
266 reloc_entry->addend = 0;
267 }
268
269 /* Here the variable relocation holds the final address of the
270 symbol we are relocating against, plus any addend. */
271 x = relocation & 0xFFFF0000;
272 x >>=16;
273 bfd_put_16 (abfd, x, (unsigned char *) data + addr + 2);
3b55e94a 274
0f64bb02
CM
275 x = relocation & 0x0000FFFF;
276 bfd_put_16 (abfd, x, (unsigned char *) data + addr);
277 return bfd_reloc_ok;
278}
279
280/* bfin_bfd_reloc handles the blackfin arithmetic relocations.
281 Use this instead of bfd_perform_relocation. */
282static bfd_reloc_status_type
283bfin_bfd_reloc (bfd *abfd,
284 arelent *reloc_entry,
4b24dd1a
AM
285 asymbol *symbol,
286 void * data,
287 asection *input_section,
288 bfd *output_bfd,
289 char **error_message ATTRIBUTE_UNUSED)
0f64bb02
CM
290{
291 bfd_vma relocation;
292 bfd_size_type addr = reloc_entry->address;
293 bfd_vma output_base = 0;
294 reloc_howto_type *howto = reloc_entry->howto;
295 asection *output_section;
296 bfd_boolean relocatable = (output_bfd != NULL);
297
298 /* Is the address of the relocation really within the section? */
299 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
300 return bfd_reloc_outofrange;
301
3b55e94a
BS
302 if (bfd_is_und_section (symbol->section)
303 && (symbol->flags & BSF_WEAK) == 0
304 && !relocatable)
305 return bfd_reloc_undefined;
306
307 /* Get symbol value. (Common symbols are special.) */
308 if (bfd_is_com_section (symbol->section))
309 relocation = 0;
0f64bb02 310 else
3b55e94a
BS
311 relocation = symbol->value;
312
313 output_section = symbol->section->output_section;
314
315 /* Convert input-section-relative symbol value to absolute. */
316 if (relocatable)
317 output_base = 0;
318 else
319 output_base = output_section->vma;
320
321 if (!relocatable || !strcmp (symbol->name, symbol->section->name))
322 relocation += output_base + symbol->section->output_offset;
323
324 if (!relocatable && !strcmp (symbol->name, symbol->section->name))
0f64bb02 325 {
3b55e94a
BS
326 /* Add in supplied addend. */
327 relocation += reloc_entry->addend;
0f64bb02 328 }
3b55e94a 329
0f64bb02
CM
330 /* Here the variable relocation holds the final address of the
331 symbol we are relocating against, plus any addend. */
332
535b785f 333 if (howto->pc_relative)
0f64bb02
CM
334 {
335 relocation -= input_section->output_section->vma + input_section->output_offset;
336
535b785f 337 if (howto->pcrel_offset)
07d6d2b8 338 relocation -= reloc_entry->address;
0f64bb02
CM
339 }
340
341 if (relocatable)
342 {
343 reloc_entry->address += input_section->output_offset;
344 reloc_entry->addend += symbol->section->output_offset;
345 }
346
347 if (howto->complain_on_overflow != complain_overflow_dont)
348 {
349 bfd_reloc_status_type status;
350
3b55e94a 351 status = bfd_check_overflow (howto->complain_on_overflow,
07d6d2b8
AM
352 howto->bitsize,
353 howto->rightshift,
354 bfd_arch_bits_per_address(abfd),
355 relocation);
0f64bb02
CM
356 if (status != bfd_reloc_ok)
357 return status;
358 }
3b55e94a 359
0f64bb02
CM
360 /* If rightshift is 1 and the number odd, return error. */
361 if (howto->rightshift && (relocation & 0x01))
362 {
4eca0228 363 _bfd_error_handler (_("relocation should be even number"));
0f64bb02
CM
364 return bfd_reloc_overflow;
365 }
366
367 relocation >>= (bfd_vma) howto->rightshift;
368
369 /* Shift everything up to where it's going to be used. */
370
371 relocation <<= (bfd_vma) howto->bitpos;
372
3b55e94a 373#define DOIT(x) \
0f64bb02
CM
374 x = ( (x & ~howto->dst_mask) | (relocation & howto->dst_mask))
375
376 /* handle 8 and 16 bit relocations here. */
377 switch (howto->size)
378 {
379 case 0:
380 {
07d6d2b8
AM
381 char x = bfd_get_8 (abfd, (char *) data + addr);
382 DOIT (x);
383 bfd_put_8 (abfd, x, (unsigned char *) data + addr);
0f64bb02
CM
384 }
385 break;
386
387 case 1:
388 {
07d6d2b8
AM
389 unsigned short x = bfd_get_16 (abfd, (bfd_byte *) data + addr);
390 DOIT (x);
391 bfd_put_16 (abfd, (bfd_vma) x, (unsigned char *) data + addr);
0f64bb02
CM
392 }
393 break;
394
395 default:
396 return bfd_reloc_other;
397 }
398
3b55e94a 399 return bfd_reloc_ok;
0f64bb02
CM
400}
401
0f64bb02
CM
402/* HOWTO Table for blackfin.
403 Blackfin relocations are fairly complicated.
404 Some of the salient features are
405 a. Even numbered offsets. A number of (not all) relocations are
406 even numbered. This means that the rightmost bit is not stored.
407 Needs to right shift by 1 and check to see if value is not odd
408 b. A relocation can be an expression. An expression takes on
409 a variety of relocations arranged in a stack.
410 As a result, we cannot use the standard generic function as special
411 function. We will have our own, which is very similar to the standard
412 generic function except that it understands how to get the value from
413 the relocation stack. . */
414
415#define BFIN_RELOC_MIN 0
48d502e1 416#define BFIN_RELOC_MAX 0x21
0f64bb02
CM
417#define BFIN_GNUEXT_RELOC_MIN 0x40
418#define BFIN_GNUEXT_RELOC_MAX 0x43
419#define BFIN_ARELOC_MIN 0xE0
420#define BFIN_ARELOC_MAX 0xF3
421
422static reloc_howto_type bfin_howto_table [] =
423{
424 /* This reloc does nothing. . */
cb88ce9f 425 HOWTO (R_BFIN_UNUSED0, /* type. */
0f64bb02 426 0, /* rightshift. */
6346d5ca
AM
427 3, /* size (0 = byte, 1 = short, 2 = long). */
428 0, /* bitsize. */
0f64bb02
CM
429 FALSE, /* pc_relative. */
430 0, /* bitpos. */
6346d5ca 431 complain_overflow_dont, /* complain_on_overflow. */
0f64bb02 432 bfd_elf_generic_reloc, /* special_function. */
cb88ce9f 433 "R_BFIN_UNUSED0", /* name. */
0f64bb02
CM
434 FALSE, /* partial_inplace. */
435 0, /* src_mask. */
436 0, /* dst_mask. */
437 FALSE), /* pcrel_offset. */
438
cb88ce9f 439 HOWTO (R_BFIN_PCREL5M2, /* type. */
0f64bb02
CM
440 1, /* rightshift. */
441 1, /* size (0 = byte, 1 = short, 2 = long).. */
442 4, /* bitsize. */
443 TRUE, /* pc_relative. */
444 0, /* bitpos. */
445 complain_overflow_unsigned, /* complain_on_overflow. */
446 bfin_bfd_reloc, /* special_function. */
cb88ce9f 447 "R_BFIN_PCREL5M2", /* name. */
0f64bb02 448 FALSE, /* partial_inplace. */
f4707595 449 0, /* src_mask. */
0f64bb02
CM
450 0x0000000F, /* dst_mask. */
451 FALSE), /* pcrel_offset. */
452
cb88ce9f 453 HOWTO (R_BFIN_UNUSED1, /* type. */
0f64bb02 454 0, /* rightshift. */
6346d5ca
AM
455 3, /* size (0 = byte, 1 = short, 2 = long). */
456 0, /* bitsize. */
0f64bb02
CM
457 FALSE, /* pc_relative. */
458 0, /* bitpos. */
6346d5ca 459 complain_overflow_dont, /* complain_on_overflow. */
0f64bb02 460 bfd_elf_generic_reloc, /* special_function. */
cb88ce9f 461 "R_BFIN_UNUSED1", /* name. */
0f64bb02
CM
462 FALSE, /* partial_inplace. */
463 0, /* src_mask. */
464 0, /* dst_mask. */
465 FALSE), /* pcrel_offset. */
466
cb88ce9f 467 HOWTO (R_BFIN_PCREL10, /* type. */
0f64bb02
CM
468 1, /* rightshift. */
469 1, /* size (0 = byte, 1 = short, 2 = long). */
470 10, /* bitsize. */
471 TRUE, /* pc_relative. */
472 0, /* bitpos. */
473 complain_overflow_signed, /* complain_on_overflow. */
474 bfin_bfd_reloc, /* special_function. */
cb88ce9f 475 "R_BFIN_PCREL10", /* name. */
0f64bb02 476 FALSE, /* partial_inplace. */
f4707595 477 0, /* src_mask. */
0f64bb02
CM
478 0x000003FF, /* dst_mask. */
479 TRUE), /* pcrel_offset. */
3b55e94a 480
cb88ce9f 481 HOWTO (R_BFIN_PCREL12_JUMP, /* type. */
0f64bb02
CM
482 1, /* rightshift. */
483 /* the offset is actually 13 bit
484 aligned on a word boundary so
485 only 12 bits have to be used.
486 Right shift the rightmost bit.. */
487 1, /* size (0 = byte, 1 = short, 2 = long). */
488 12, /* bitsize. */
489 TRUE, /* pc_relative. */
490 0, /* bitpos. */
491 complain_overflow_signed, /* complain_on_overflow. */
492 bfin_bfd_reloc, /* special_function. */
cb88ce9f 493 "R_BFIN_PCREL12_JUMP", /* name. */
0f64bb02 494 FALSE, /* partial_inplace. */
f4707595 495 0, /* src_mask. */
0f64bb02
CM
496 0x0FFF, /* dst_mask. */
497 TRUE), /* pcrel_offset. */
498
cb88ce9f 499 HOWTO (R_BFIN_RIMM16, /* type. */
0f64bb02
CM
500 0, /* rightshift. */
501 1, /* size (0 = byte, 1 = short, 2 = long). */
502 16, /* bitsize. */
503 FALSE, /* pc_relative. */
504 0, /* bitpos. */
505 complain_overflow_signed, /* complain_on_overflow. */
506 bfin_imm16_reloc, /* special_function. */
cb88ce9f 507 "R_BFIN_RIMM16", /* name. */
0f64bb02 508 FALSE, /* partial_inplace. */
f4707595 509 0, /* src_mask. */
0f64bb02
CM
510 0x0000FFFF, /* dst_mask. */
511 TRUE), /* pcrel_offset. */
512
cb88ce9f 513 HOWTO (R_BFIN_LUIMM16, /* type. */
0f64bb02
CM
514 0, /* rightshift. */
515 1, /* size (0 = byte, 1 = short, 2 = long). */
516 16, /* bitsize. */
517 FALSE, /* pc_relative. */
518 0, /* bitpos. */
519 complain_overflow_dont, /* complain_on_overflow. */
520 bfin_imm16_reloc, /* special_function. */
cb88ce9f 521 "R_BFIN_LUIMM16", /* name. */
0f64bb02 522 FALSE, /* partial_inplace. */
f4707595 523 0, /* src_mask. */
0f64bb02
CM
524 0x0000FFFF, /* dst_mask. */
525 TRUE), /* pcrel_offset. */
3b55e94a 526
cb88ce9f 527 HOWTO (R_BFIN_HUIMM16, /* type. */
0f64bb02
CM
528 16, /* rightshift. */
529 1, /* size (0 = byte, 1 = short, 2 = long). */
530 16, /* bitsize. */
531 FALSE, /* pc_relative. */
532 0, /* bitpos. */
533 complain_overflow_unsigned, /* complain_on_overflow. */
534 bfin_imm16_reloc, /* special_function. */
cb88ce9f 535 "R_BFIN_HUIMM16", /* name. */
0f64bb02 536 FALSE, /* partial_inplace. */
f4707595 537 0, /* src_mask. */
0f64bb02
CM
538 0x0000FFFF, /* dst_mask. */
539 TRUE), /* pcrel_offset. */
540
cb88ce9f 541 HOWTO (R_BFIN_PCREL12_JUMP_S, /* type. */
0f64bb02
CM
542 1, /* rightshift. */
543 1, /* size (0 = byte, 1 = short, 2 = long). */
544 12, /* bitsize. */
545 TRUE, /* pc_relative. */
546 0, /* bitpos. */
547 complain_overflow_signed, /* complain_on_overflow. */
548 bfin_bfd_reloc, /* special_function. */
cb88ce9f 549 "R_BFIN_PCREL12_JUMP_S", /* name. */
0f64bb02 550 FALSE, /* partial_inplace. */
f4707595 551 0, /* src_mask. */
0f64bb02
CM
552 0x00000FFF, /* dst_mask. */
553 TRUE), /* pcrel_offset. */
554
cb88ce9f 555 HOWTO (R_BFIN_PCREL24_JUMP_X, /* type. */
07d6d2b8
AM
556 1, /* rightshift. */
557 2, /* size (0 = byte, 1 = short, 2 = long). */
558 24, /* bitsize. */
559 TRUE, /* pc_relative. */
560 0, /* bitpos. */
561 complain_overflow_signed, /* complain_on_overflow. */
562 bfin_pcrel24_reloc, /* special_function. */
cb88ce9f 563 "R_BFIN_PCREL24_JUMP_X", /* name. */
0f64bb02 564 FALSE, /* partial_inplace. */
f4707595 565 0, /* src_mask. */
0f64bb02
CM
566 0x00FFFFFF, /* dst_mask. */
567 TRUE), /* pcrel_offset. */
568
cb88ce9f 569 HOWTO (R_BFIN_PCREL24, /* type. */
0f64bb02
CM
570 1, /* rightshift. */
571 2, /* size (0 = byte, 1 = short, 2 = long). */
572 24, /* bitsize. */
573 TRUE, /* pc_relative. */
574 0, /* bitpos. */
575 complain_overflow_signed, /* complain_on_overflow. */
576 bfin_pcrel24_reloc, /* special_function. */
cb88ce9f 577 "R_BFIN_PCREL24", /* name. */
0f64bb02 578 FALSE, /* partial_inplace. */
f4707595 579 0, /* src_mask. */
0f64bb02
CM
580 0x00FFFFFF, /* dst_mask. */
581 TRUE), /* pcrel_offset. */
582
cb88ce9f 583 HOWTO (R_BFIN_UNUSEDB, /* type. */
0f64bb02 584 0, /* rightshift. */
6346d5ca
AM
585 3, /* size (0 = byte, 1 = short, 2 = long). */
586 0, /* bitsize. */
0f64bb02
CM
587 FALSE, /* pc_relative. */
588 0, /* bitpos. */
589 complain_overflow_dont, /* complain_on_overflow. */
590 bfd_elf_generic_reloc, /* special_function. */
cb88ce9f 591 "R_BFIN_UNUSEDB", /* name. */
0f64bb02
CM
592 FALSE, /* partial_inplace. */
593 0, /* src_mask. */
594 0, /* dst_mask. */
595 FALSE), /* pcrel_offset. */
596
cb88ce9f 597 HOWTO (R_BFIN_UNUSEDC, /* type. */
0f64bb02 598 0, /* rightshift. */
6346d5ca
AM
599 3, /* size (0 = byte, 1 = short, 2 = long). */
600 0, /* bitsize. */
0f64bb02
CM
601 FALSE, /* pc_relative. */
602 0, /* bitpos. */
603 complain_overflow_dont, /* complain_on_overflow. */
604 bfd_elf_generic_reloc, /* special_function. */
cb88ce9f 605 "R_BFIN_UNUSEDC", /* name. */
0f64bb02
CM
606 FALSE, /* partial_inplace. */
607 0, /* src_mask. */
608 0, /* dst_mask. */
609 FALSE), /* pcrel_offset. */
610
cb88ce9f 611 HOWTO (R_BFIN_PCREL24_JUMP_L, /* type. */
0f64bb02
CM
612 1, /* rightshift. */
613 2, /* size (0 = byte, 1 = short, 2 = long). */
614 24, /* bitsize. */
615 TRUE, /* pc_relative. */
616 0, /* bitpos. */
617 complain_overflow_signed, /* complain_on_overflow. */
618 bfin_pcrel24_reloc, /* special_function. */
cb88ce9f 619 "R_BFIN_PCREL24_JUMP_L", /* name. */
0f64bb02 620 FALSE, /* partial_inplace. */
f4707595 621 0, /* src_mask. */
0f64bb02
CM
622 0x00FFFFFF, /* dst_mask. */
623 TRUE), /* pcrel_offset. */
624
cb88ce9f 625 HOWTO (R_BFIN_PCREL24_CALL_X, /* type. */
0f64bb02
CM
626 1, /* rightshift. */
627 2, /* size (0 = byte, 1 = short, 2 = long). */
628 24, /* bitsize. */
629 TRUE, /* pc_relative. */
630 0, /* bitpos. */
631 complain_overflow_signed, /* complain_on_overflow. */
632 bfin_pcrel24_reloc, /* special_function. */
cb88ce9f 633 "R_BFIN_PCREL24_CALL_X", /* name. */
0f64bb02 634 FALSE, /* partial_inplace. */
f4707595 635 0, /* src_mask. */
0f64bb02
CM
636 0x00FFFFFF, /* dst_mask. */
637 TRUE), /* pcrel_offset. */
638
cb88ce9f 639 HOWTO (R_BFIN_VAR_EQ_SYMB, /* type. */
0f64bb02
CM
640 0, /* rightshift. */
641 2, /* size (0 = byte, 1 = short, 2 = long). */
642 32, /* bitsize. */
643 FALSE, /* pc_relative. */
644 0, /* bitpos. */
645 complain_overflow_bitfield, /* complain_on_overflow. */
646 bfin_bfd_reloc, /* special_function. */
cb88ce9f 647 "R_BFIN_VAR_EQ_SYMB", /* name. */
0f64bb02
CM
648 FALSE, /* partial_inplace. */
649 0, /* src_mask. */
650 0, /* dst_mask. */
651 FALSE), /* pcrel_offset. */
652
cb88ce9f 653 HOWTO (R_BFIN_BYTE_DATA, /* type. */
0f64bb02
CM
654 0, /* rightshift. */
655 0, /* size (0 = byte, 1 = short, 2 = long). */
656 8, /* bitsize. */
657 FALSE, /* pc_relative. */
658 0, /* bitpos. */
659 complain_overflow_unsigned, /* complain_on_overflow. */
660 bfin_bfd_reloc, /* special_function. */
cb88ce9f 661 "R_BFIN_BYTE_DATA", /* name. */
0f64bb02 662 FALSE, /* partial_inplace. */
f4707595 663 0, /* src_mask. */
0f64bb02
CM
664 0xFF, /* dst_mask. */
665 TRUE), /* pcrel_offset. */
666
cb88ce9f 667 HOWTO (R_BFIN_BYTE2_DATA, /* type. */
0f64bb02
CM
668 0, /* rightshift. */
669 1, /* size (0 = byte, 1 = short, 2 = long). */
670 16, /* bitsize. */
671 FALSE, /* pc_relative. */
672 0, /* bitpos. */
673 complain_overflow_signed, /* complain_on_overflow. */
674 bfin_bfd_reloc, /* special_function. */
cb88ce9f 675 "R_BFIN_BYTE2_DATA", /* name. */
0f64bb02 676 FALSE, /* partial_inplace. */
f4707595 677 0, /* src_mask. */
0f64bb02
CM
678 0xFFFF, /* dst_mask. */
679 TRUE), /* pcrel_offset. */
680
cb88ce9f 681 HOWTO (R_BFIN_BYTE4_DATA, /* type. */
0f64bb02
CM
682 0, /* rightshift. */
683 2, /* size (0 = byte, 1 = short, 2 = long). */
684 32, /* bitsize. */
685 FALSE, /* pc_relative. */
686 0, /* bitpos. */
687 complain_overflow_unsigned, /* complain_on_overflow. */
688 bfin_byte4_reloc, /* special_function. */
cb88ce9f 689 "R_BFIN_BYTE4_DATA", /* name. */
0f64bb02 690 FALSE, /* partial_inplace. */
f4707595 691 0, /* src_mask. */
0f64bb02
CM
692 0xFFFFFFFF, /* dst_mask. */
693 TRUE), /* pcrel_offset. */
694
cb88ce9f 695 HOWTO (R_BFIN_PCREL11, /* type. */
0f64bb02
CM
696 1, /* rightshift. */
697 1, /* size (0 = byte, 1 = short, 2 = long). */
698 10, /* bitsize. */
699 TRUE, /* pc_relative. */
700 0, /* bitpos. */
701 complain_overflow_unsigned, /* complain_on_overflow. */
702 bfin_bfd_reloc, /* special_function. */
cb88ce9f 703 "R_BFIN_PCREL11", /* name. */
0f64bb02 704 FALSE, /* partial_inplace. */
f4707595 705 0, /* src_mask. */
0f64bb02
CM
706 0x000003FF, /* dst_mask. */
707 FALSE), /* pcrel_offset. */
48d502e1
BS
708
709
710 /* A 18-bit signed operand with the GOT offset for the address of
711 the symbol. */
07d6d2b8 712 HOWTO (R_BFIN_GOT17M4, /* type */
48d502e1
BS
713 2, /* rightshift */
714 1, /* size (0 = byte, 1 = short, 2 = long) */
715 16, /* bitsize */
716 FALSE, /* pc_relative */
717 0, /* bitpos */
718 complain_overflow_signed, /* complain_on_overflow */
719 bfd_elf_generic_reloc, /* special_function */
5dff4664 720 "R_BFIN_GOT17M4", /* name */
48d502e1 721 FALSE, /* partial_inplace */
07d6d2b8
AM
722 0xffff, /* src_mask */
723 0xffff, /* dst_mask */
724 FALSE), /* pcrel_offset */
48d502e1
BS
725
726 /* The upper 16 bits of the GOT offset for the address of the
727 symbol. */
07d6d2b8 728 HOWTO (R_BFIN_GOTHI, /* type */
48d502e1
BS
729 0, /* rightshift */
730 1, /* size (0 = byte, 1 = short, 2 = long) */
731 16, /* bitsize */
732 FALSE, /* pc_relative */
733 0, /* bitpos */
734 complain_overflow_dont, /* complain_on_overflow */
735 bfd_elf_generic_reloc, /* special_function */
736 "R_BFIN_GOTHI", /* name */
737 FALSE, /* partial_inplace */
07d6d2b8 738 0xffff, /* src_mask */
48d502e1 739 0xffff, /* dst_mask */
07d6d2b8 740 FALSE), /* pcrel_offset */
48d502e1
BS
741
742 /* The lower 16 bits of the GOT offset for the address of the
743 symbol. */
07d6d2b8 744 HOWTO (R_BFIN_GOTLO, /* type */
48d502e1
BS
745 0, /* rightshift */
746 1, /* size (0 = byte, 1 = short, 2 = long) */
747 16, /* bitsize */
748 FALSE, /* pc_relative */
749 0, /* bitpos */
750 complain_overflow_dont, /* complain_on_overflow */
751 bfd_elf_generic_reloc, /* special_function */
752 "R_BFIN_GOTLO", /* name */
753 FALSE, /* partial_inplace */
754 0xffff, /* src_mask */
755 0xffff, /* dst_mask */
07d6d2b8 756 FALSE), /* pcrel_offset */
48d502e1
BS
757
758 /* The 32-bit address of the canonical descriptor of a function. */
759 HOWTO (R_BFIN_FUNCDESC, /* type */
760 0, /* rightshift */
761 2, /* size (0 = byte, 1 = short, 2 = long) */
762 32, /* bitsize */
763 FALSE, /* pc_relative */
764 0, /* bitpos */
765 complain_overflow_bitfield, /* complain_on_overflow */
766 bfd_elf_generic_reloc, /* special_function */
767 "R_BFIN_FUNCDESC", /* name */
768 FALSE, /* partial_inplace */
769 0xffffffff, /* src_mask */
770 0xffffffff, /* dst_mask */
771 FALSE), /* pcrel_offset */
772
773 /* A 12-bit signed operand with the GOT offset for the address of
774 canonical descriptor of a function. */
775 HOWTO (R_BFIN_FUNCDESC_GOT17M4, /* type */
776 2, /* rightshift */
777 1, /* size (0 = byte, 1 = short, 2 = long) */
778 16, /* bitsize */
779 FALSE, /* pc_relative */
780 0, /* bitpos */
781 complain_overflow_signed, /* complain_on_overflow */
782 bfd_elf_generic_reloc, /* special_function */
783 "R_BFIN_FUNCDESC_GOT17M4", /* name */
784 FALSE, /* partial_inplace */
07d6d2b8
AM
785 0xffff, /* src_mask */
786 0xffff, /* dst_mask */
787 FALSE), /* pcrel_offset */
48d502e1
BS
788
789 /* The upper 16 bits of the GOT offset for the address of the
790 canonical descriptor of a function. */
791 HOWTO (R_BFIN_FUNCDESC_GOTHI, /* type */
792 0, /* rightshift */
793 1, /* size (0 = byte, 1 = short, 2 = long) */
794 16, /* bitsize */
795 FALSE, /* pc_relative */
796 0, /* bitpos */
797 complain_overflow_dont, /* complain_on_overflow */
798 bfd_elf_generic_reloc, /* special_function */
799 "R_BFIN_FUNCDESC_GOTHI", /* name */
800 FALSE, /* partial_inplace */
801 0xffff, /* src_mask */
802 0xffff, /* dst_mask */
07d6d2b8 803 FALSE), /* pcrel_offset */
48d502e1
BS
804
805 /* The lower 16 bits of the GOT offset for the address of the
806 canonical descriptor of a function. */
807 HOWTO (R_BFIN_FUNCDESC_GOTLO, /* type */
808 0, /* rightshift */
809 1, /* size (0 = byte, 1 = short, 2 = long) */
810 16, /* bitsize */
811 FALSE, /* pc_relative */
812 0, /* bitpos */
813 complain_overflow_dont, /* complain_on_overflow */
814 bfd_elf_generic_reloc, /* special_function */
815 "R_BFIN_FUNCDESC_GOTLO", /* name */
816 FALSE, /* partial_inplace */
817 0xffff, /* src_mask */
818 0xffff, /* dst_mask */
07d6d2b8 819 FALSE), /* pcrel_offset */
48d502e1
BS
820
821 /* The 32-bit address of the canonical descriptor of a function. */
822 HOWTO (R_BFIN_FUNCDESC_VALUE, /* type */
823 0, /* rightshift */
824 2, /* size (0 = byte, 1 = short, 2 = long) */
825 64, /* bitsize */
826 FALSE, /* pc_relative */
827 0, /* bitpos */
828 complain_overflow_bitfield, /* complain_on_overflow */
829 bfd_elf_generic_reloc, /* special_function */
830 "R_BFIN_FUNCDESC_VALUE", /* name */
831 FALSE, /* partial_inplace */
832 0xffffffff, /* src_mask */
833 0xffffffff, /* dst_mask */
834 FALSE), /* pcrel_offset */
835
836 /* A 12-bit signed operand with the GOT offset for the address of
837 canonical descriptor of a function. */
838 HOWTO (R_BFIN_FUNCDESC_GOTOFF17M4, /* type */
839 2, /* rightshift */
840 1, /* size (0 = byte, 1 = short, 2 = long) */
841 16, /* bitsize */
842 FALSE, /* pc_relative */
843 0, /* bitpos */
844 complain_overflow_signed, /* complain_on_overflow */
845 bfd_elf_generic_reloc, /* special_function */
846 "R_BFIN_FUNCDESC_GOTOFF17M4", /* name */
847 FALSE, /* partial_inplace */
07d6d2b8
AM
848 0xffff, /* src_mask */
849 0xffff, /* dst_mask */
850 FALSE), /* pcrel_offset */
48d502e1
BS
851
852 /* The upper 16 bits of the GOT offset for the address of the
853 canonical descriptor of a function. */
854 HOWTO (R_BFIN_FUNCDESC_GOTOFFHI, /* type */
855 0, /* rightshift */
856 1, /* size (0 = byte, 1 = short, 2 = long) */
857 16, /* bitsize */
858 FALSE, /* pc_relative */
859 0, /* bitpos */
860 complain_overflow_dont, /* complain_on_overflow */
861 bfd_elf_generic_reloc, /* special_function */
862 "R_BFIN_FUNCDESC_GOTOFFHI", /* name */
863 FALSE, /* partial_inplace */
864 0xffff, /* src_mask */
865 0xffff, /* dst_mask */
07d6d2b8 866 FALSE), /* pcrel_offset */
48d502e1
BS
867
868 /* The lower 16 bits of the GOT offset for the address of the
869 canonical descriptor of a function. */
870 HOWTO (R_BFIN_FUNCDESC_GOTOFFLO, /* type */
871 0, /* rightshift */
872 1, /* size (0 = byte, 1 = short, 2 = long) */
873 16, /* bitsize */
874 FALSE, /* pc_relative */
875 0, /* bitpos */
876 complain_overflow_dont, /* complain_on_overflow */
877 bfd_elf_generic_reloc, /* special_function */
878 "R_BFIN_FUNCDESC_GOTOFFLO", /* name */
879 FALSE, /* partial_inplace */
880 0xffff, /* src_mask */
881 0xffff, /* dst_mask */
07d6d2b8 882 FALSE), /* pcrel_offset */
48d502e1
BS
883
884 /* A 12-bit signed operand with the GOT offset for the address of
885 the symbol. */
07d6d2b8 886 HOWTO (R_BFIN_GOTOFF17M4, /* type */
48d502e1
BS
887 2, /* rightshift */
888 1, /* size (0 = byte, 1 = short, 2 = long) */
889 16, /* bitsize */
890 FALSE, /* pc_relative */
891 0, /* bitpos */
892 complain_overflow_signed, /* complain_on_overflow */
893 bfd_elf_generic_reloc, /* special_function */
894 "R_BFIN_GOTOFF17M4", /* name */
895 FALSE, /* partial_inplace */
07d6d2b8
AM
896 0xffff, /* src_mask */
897 0xffff, /* dst_mask */
898 FALSE), /* pcrel_offset */
48d502e1
BS
899
900 /* The upper 16 bits of the GOT offset for the address of the
901 symbol. */
07d6d2b8 902 HOWTO (R_BFIN_GOTOFFHI, /* type */
48d502e1
BS
903 0, /* rightshift */
904 1, /* size (0 = byte, 1 = short, 2 = long) */
905 16, /* bitsize */
906 FALSE, /* pc_relative */
907 0, /* bitpos */
908 complain_overflow_dont, /* complain_on_overflow */
909 bfd_elf_generic_reloc, /* special_function */
910 "R_BFIN_GOTOFFHI", /* name */
911 FALSE, /* partial_inplace */
912 0xffff, /* src_mask */
913 0xffff, /* dst_mask */
07d6d2b8 914 FALSE), /* pcrel_offset */
48d502e1
BS
915
916 /* The lower 16 bits of the GOT offset for the address of the
917 symbol. */
918 HOWTO (R_BFIN_GOTOFFLO, /* type */
919 0, /* rightshift */
920 1, /* size (0 = byte, 1 = short, 2 = long) */
921 16, /* bitsize */
922 FALSE, /* pc_relative */
923 0, /* bitpos */
924 complain_overflow_dont, /* complain_on_overflow */
925 bfd_elf_generic_reloc, /* special_function */
926 "R_BFIN_GOTOFFLO", /* name */
927 FALSE, /* partial_inplace */
928 0xffff, /* src_mask */
929 0xffff, /* dst_mask */
07d6d2b8 930 FALSE), /* pcrel_offset */
0f64bb02
CM
931};
932
0f64bb02
CM
933static reloc_howto_type bfin_gnuext_howto_table [] =
934{
cb88ce9f 935 HOWTO (R_BFIN_PLTPC, /* type. */
0f64bb02
CM
936 0, /* rightshift. */
937 1, /* size (0 = byte, 1 = short, 2 = long). */
938 16, /* bitsize. */
939 FALSE, /* pc_relative. */
940 0, /* bitpos. */
941 complain_overflow_bitfield, /* complain_on_overflow. */
942 bfin_pltpc_reloc, /* special_function. */
cb88ce9f 943 "R_BFIN_PLTPC", /* name. */
0f64bb02
CM
944 FALSE, /* partial_inplace. */
945 0xffff, /* src_mask. */
946 0xffff, /* dst_mask. */
947 FALSE), /* pcrel_offset. */
948
cb88ce9f 949 HOWTO (R_BFIN_GOT, /* type. */
0f64bb02
CM
950 0, /* rightshift. */
951 1, /* size (0 = byte, 1 = short, 2 = long). */
952 16, /* bitsize. */
953 FALSE, /* pc_relative. */
954 0, /* bitpos. */
955 complain_overflow_bitfield, /* complain_on_overflow. */
956 bfd_elf_generic_reloc, /* special_function. */
cb88ce9f 957 "R_BFIN_GOT", /* name. */
0f64bb02
CM
958 FALSE, /* partial_inplace. */
959 0x7fff, /* src_mask. */
960 0x7fff, /* dst_mask. */
961 FALSE), /* pcrel_offset. */
962
963/* GNU extension to record C++ vtable hierarchy. */
07d6d2b8
AM
964 HOWTO (R_BFIN_GNU_VTINHERIT, /* type. */
965 0, /* rightshift. */
966 2, /* size (0 = byte, 1 = short, 2 = long). */
967 0, /* bitsize. */
968 FALSE, /* pc_relative. */
969 0, /* bitpos. */
970 complain_overflow_dont, /* complain_on_overflow. */
971 NULL, /* special_function. */
972 "R_BFIN_GNU_VTINHERIT", /* name. */
973 FALSE, /* partial_inplace. */
974 0, /* src_mask. */
975 0, /* dst_mask. */
976 FALSE), /* pcrel_offset. */
0f64bb02
CM
977
978/* GNU extension to record C++ vtable member usage. */
979 HOWTO (R_BFIN_GNU_VTENTRY, /* type. */
07d6d2b8
AM
980 0, /* rightshift. */
981 2, /* size (0 = byte, 1 = short, 2 = long). */
982 0, /* bitsize. */
983 FALSE, /* pc_relative. */
984 0, /* bitpos. */
985 complain_overflow_dont, /* complain_on_overflow. */
986 _bfd_elf_rel_vtable_reloc_fn, /* special_function. */
987 "R_BFIN_GNU_VTENTRY", /* name. */
988 FALSE, /* partial_inplace. */
989 0, /* src_mask. */
990 0, /* dst_mask. */
991 FALSE) /* pcrel_offset. */
0f64bb02
CM
992};
993
994struct bfin_reloc_map
995{
07d6d2b8 996 bfd_reloc_code_real_type bfd_reloc_val;
0f64bb02
CM
997 unsigned int bfin_reloc_val;
998};
999
1000static const struct bfin_reloc_map bfin_reloc_map [] =
1001{
cb88ce9f
BS
1002 { BFD_RELOC_NONE, R_BFIN_UNUSED0 },
1003 { BFD_RELOC_BFIN_5_PCREL, R_BFIN_PCREL5M2 },
1004 { BFD_RELOC_NONE, R_BFIN_UNUSED1 },
1005 { BFD_RELOC_BFIN_10_PCREL, R_BFIN_PCREL10 },
1006 { BFD_RELOC_BFIN_12_PCREL_JUMP, R_BFIN_PCREL12_JUMP },
1007 { BFD_RELOC_BFIN_16_IMM, R_BFIN_RIMM16 },
1008 { BFD_RELOC_BFIN_16_LOW, R_BFIN_LUIMM16 },
1009 { BFD_RELOC_BFIN_16_HIGH, R_BFIN_HUIMM16 },
1010 { BFD_RELOC_BFIN_12_PCREL_JUMP_S, R_BFIN_PCREL12_JUMP_S },
1011 { BFD_RELOC_24_PCREL, R_BFIN_PCREL24 },
1012 { BFD_RELOC_24_PCREL, R_BFIN_PCREL24 },
1013 { BFD_RELOC_BFIN_24_PCREL_JUMP_L, R_BFIN_PCREL24_JUMP_L },
1014 { BFD_RELOC_NONE, R_BFIN_UNUSEDB },
1015 { BFD_RELOC_NONE, R_BFIN_UNUSEDC },
1016 { BFD_RELOC_BFIN_24_PCREL_CALL_X, R_BFIN_PCREL24_CALL_X },
1017 { BFD_RELOC_8, R_BFIN_BYTE_DATA },
1018 { BFD_RELOC_16, R_BFIN_BYTE2_DATA },
1019 { BFD_RELOC_32, R_BFIN_BYTE4_DATA },
1020 { BFD_RELOC_BFIN_11_PCREL, R_BFIN_PCREL11 },
1021 { BFD_RELOC_BFIN_GOT, R_BFIN_GOT },
1022 { BFD_RELOC_BFIN_PLTPC, R_BFIN_PLTPC },
48d502e1
BS
1023
1024 { BFD_RELOC_BFIN_GOT17M4, R_BFIN_GOT17M4 },
1025 { BFD_RELOC_BFIN_GOTHI, R_BFIN_GOTHI },
1026 { BFD_RELOC_BFIN_GOTLO, R_BFIN_GOTLO },
1027 { BFD_RELOC_BFIN_FUNCDESC, R_BFIN_FUNCDESC },
1028 { BFD_RELOC_BFIN_FUNCDESC_GOT17M4, R_BFIN_FUNCDESC_GOT17M4 },
1029 { BFD_RELOC_BFIN_FUNCDESC_GOTHI, R_BFIN_FUNCDESC_GOTHI },
1030 { BFD_RELOC_BFIN_FUNCDESC_GOTLO, R_BFIN_FUNCDESC_GOTLO },
1031 { BFD_RELOC_BFIN_FUNCDESC_VALUE, R_BFIN_FUNCDESC_VALUE },
1032 { BFD_RELOC_BFIN_FUNCDESC_GOTOFF17M4, R_BFIN_FUNCDESC_GOTOFF17M4 },
1033 { BFD_RELOC_BFIN_FUNCDESC_GOTOFFHI, R_BFIN_FUNCDESC_GOTOFFHI },
1034 { BFD_RELOC_BFIN_FUNCDESC_GOTOFFLO, R_BFIN_FUNCDESC_GOTOFFLO },
1035 { BFD_RELOC_BFIN_GOTOFF17M4, R_BFIN_GOTOFF17M4 },
1036 { BFD_RELOC_BFIN_GOTOFFHI, R_BFIN_GOTOFFHI },
1037 { BFD_RELOC_BFIN_GOTOFFLO, R_BFIN_GOTOFFLO },
1038
0f64bb02
CM
1039 { BFD_RELOC_VTABLE_INHERIT, R_BFIN_GNU_VTINHERIT },
1040 { BFD_RELOC_VTABLE_ENTRY, R_BFIN_GNU_VTENTRY },
0f64bb02
CM
1041};
1042
1043
f3185997
NC
1044static bfd_boolean
1045bfin_info_to_howto (bfd *abfd,
07d6d2b8
AM
1046 arelent *cache_ptr,
1047 Elf_Internal_Rela *dst)
0f64bb02
CM
1048{
1049 unsigned int r_type;
1050
1051 r_type = ELF32_R_TYPE (dst->r_info);
1052
1053 if (r_type <= BFIN_RELOC_MAX)
1054 cache_ptr->howto = &bfin_howto_table [r_type];
1055
0f64bb02
CM
1056 else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX)
1057 cache_ptr->howto = &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN];
1058
1059 else
f3185997
NC
1060 {
1061 /* xgettext:c-format */
1062 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
1063 abfd, r_type);
1064 bfd_set_error (bfd_error_bad_value);
1065 return FALSE;
1066 }
1067
1068 return TRUE;
0f64bb02 1069}
157090f7 1070
0f64bb02
CM
1071/* Given a BFD reloc type, return the howto. */
1072static reloc_howto_type *
1073bfin_bfd_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
1074 bfd_reloc_code_real_type code)
1075{
1076 unsigned int i;
0ba38529 1077 unsigned int r_type = (unsigned int) -1;
0f64bb02 1078
0ba38529 1079 for (i = sizeof (bfin_reloc_map) / sizeof (bfin_reloc_map[0]); i--;)
0f64bb02
CM
1080 if (bfin_reloc_map[i].bfd_reloc_val == code)
1081 r_type = bfin_reloc_map[i].bfin_reloc_val;
1082
0ba38529 1083 if (r_type <= BFIN_RELOC_MAX)
0f64bb02
CM
1084 return &bfin_howto_table [r_type];
1085
0f64bb02
CM
1086 else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX)
1087 return &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN];
1088
1089 return (reloc_howto_type *) NULL;
157090f7 1090}
0f64bb02 1091
157090f7
AM
1092static reloc_howto_type *
1093bfin_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1094 const char *r_name)
1095{
1096 unsigned int i;
1097
1098 for (i = 0;
1099 i < (sizeof (bfin_howto_table)
1100 / sizeof (bfin_howto_table[0]));
1101 i++)
1102 if (bfin_howto_table[i].name != NULL
1103 && strcasecmp (bfin_howto_table[i].name, r_name) == 0)
1104 return &bfin_howto_table[i];
1105
1106 for (i = 0;
1107 i < (sizeof (bfin_gnuext_howto_table)
1108 / sizeof (bfin_gnuext_howto_table[0]));
1109 i++)
1110 if (bfin_gnuext_howto_table[i].name != NULL
1111 && strcasecmp (bfin_gnuext_howto_table[i].name, r_name) == 0)
1112 return &bfin_gnuext_howto_table[i];
1113
1114 return NULL;
0f64bb02 1115}
157090f7 1116
0f64bb02
CM
1117/* Given a bfin relocation type, return the howto. */
1118static reloc_howto_type *
1119bfin_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
2c3fc389 1120 unsigned int r_type)
0f64bb02
CM
1121{
1122 if (r_type <= BFIN_RELOC_MAX)
1123 return &bfin_howto_table [r_type];
1124
0f64bb02
CM
1125 else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX)
1126 return &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN];
1127
1128 return (reloc_howto_type *) NULL;
0f64bb02
CM
1129}
1130
781303ce
MF
1131/* Set by ld emulation if --code-in-l1. */
1132bfd_boolean elf32_bfin_code_in_l1 = 0;
1133
1134/* Set by ld emulation if --data-in-l1. */
1135bfd_boolean elf32_bfin_data_in_l1 = 0;
1136
cc364be6
AM
1137static bfd_boolean
1138elf32_bfin_final_write_processing (bfd *abfd)
781303ce
MF
1139{
1140 if (elf32_bfin_code_in_l1)
1141 elf_elfheader (abfd)->e_flags |= EF_BFIN_CODE_IN_L1;
1142 if (elf32_bfin_data_in_l1)
1143 elf_elfheader (abfd)->e_flags |= EF_BFIN_DATA_IN_L1;
cc364be6 1144 return _bfd_elf_final_write_processing (abfd);
781303ce
MF
1145}
1146
0f64bb02
CM
1147/* Return TRUE if the name is a local label.
1148 bfin local labels begin with L$. */
1149static bfd_boolean
2c3fc389 1150bfin_is_local_label_name (bfd *abfd, const char *label)
0f64bb02
CM
1151{
1152 if (label[0] == 'L' && label[1] == '$' )
1153 return TRUE;
1154
1155 return _bfd_elf_is_local_label_name (abfd, label);
1156}
c96a8570
BS
1157\f
1158/* Look through the relocs for a section during the first phase, and
1159 allocate space in the global offset table or procedure linkage
1160 table. */
0f64bb02 1161
c96a8570
BS
1162static bfd_boolean
1163bfin_check_relocs (bfd * abfd,
1164 struct bfd_link_info *info,
1165 asection *sec,
07d6d2b8 1166 const Elf_Internal_Rela *relocs)
48d502e1 1167{
c96a8570
BS
1168 bfd *dynobj;
1169 Elf_Internal_Shdr *symtab_hdr;
1170 struct elf_link_hash_entry **sym_hashes;
1171 bfd_signed_vma *local_got_refcounts;
1172 const Elf_Internal_Rela *rel;
1173 const Elf_Internal_Rela *rel_end;
48d502e1 1174 asection *sgot;
c96a8570 1175 asection *srelgot;
2c3fc389 1176
0e1862bb 1177 if (bfd_link_relocatable (info))
c96a8570 1178 return TRUE;
48d502e1 1179
c96a8570
BS
1180 dynobj = elf_hash_table (info)->dynobj;
1181 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1182 sym_hashes = elf_sym_hashes (abfd);
1183 local_got_refcounts = elf_local_got_refcounts (abfd);
48d502e1 1184
c96a8570
BS
1185 sgot = NULL;
1186 srelgot = NULL;
48d502e1 1187
c96a8570
BS
1188 rel_end = relocs + sec->reloc_count;
1189 for (rel = relocs; rel < rel_end; rel++)
48d502e1 1190 {
c96a8570
BS
1191 unsigned long r_symndx;
1192 struct elf_link_hash_entry *h;
48d502e1 1193
c96a8570
BS
1194 r_symndx = ELF32_R_SYM (rel->r_info);
1195 if (r_symndx < symtab_hdr->sh_info)
1196 h = NULL;
1197 else
81fbe831
AM
1198 {
1199 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
81fbe831 1200 }
48d502e1 1201
c96a8570
BS
1202 switch (ELF32_R_TYPE (rel->r_info))
1203 {
1204 /* This relocation describes the C++ object vtable hierarchy.
07d6d2b8
AM
1205 Reconstruct it for later use during GC. */
1206 case R_BFIN_GNU_VTINHERIT:
1207 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1208 return FALSE;
1209 break;
1210
1211 /* This relocation describes which C++ vtable entries
1212 are actually used. Record for later use during GC. */
1213 case R_BFIN_GNU_VTENTRY:
a0ea3a14 1214 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
07d6d2b8
AM
1215 return FALSE;
1216 break;
48d502e1 1217
cb88ce9f 1218 case R_BFIN_GOT:
c96a8570
BS
1219 if (h != NULL
1220 && strcmp (h->root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0)
1221 break;
1222 /* Fall through. */
48d502e1 1223
c96a8570
BS
1224 if (dynobj == NULL)
1225 {
1226 /* Create the .got section. */
1227 elf_hash_table (info)->dynobj = dynobj = abfd;
1228 if (!_bfd_elf_create_got_section (dynobj, info))
1229 return FALSE;
1230 }
48d502e1 1231
ce558b89
AM
1232 sgot = elf_hash_table (info)->sgot;
1233 srelgot = elf_hash_table (info)->srelgot;
1234 BFD_ASSERT (sgot != NULL);
48d502e1 1235
c96a8570
BS
1236 if (h != NULL)
1237 {
1238 if (h->got.refcount == 0)
1239 {
1240 /* Make sure this symbol is output as a dynamic symbol. */
1241 if (h->dynindx == -1 && !h->forced_local)
1242 {
1243 if (!bfd_elf_link_record_dynamic_symbol (info, h))
1244 return FALSE;
1245 }
48d502e1 1246
c96a8570
BS
1247 /* Allocate space in the .got section. */
1248 sgot->size += 4;
1249 /* Allocate relocation space. */
1250 srelgot->size += sizeof (Elf32_External_Rela);
1251 }
1252 h->got.refcount++;
1253 }
1254 else
1255 {
1256 /* This is a global offset table entry for a local symbol. */
1257 if (local_got_refcounts == NULL)
1258 {
1259 bfd_size_type size;
48d502e1 1260
c96a8570
BS
1261 size = symtab_hdr->sh_info;
1262 size *= sizeof (bfd_signed_vma);
1263 local_got_refcounts = ((bfd_signed_vma *)
1264 bfd_zalloc (abfd, size));
1265 if (local_got_refcounts == NULL)
1266 return FALSE;
1267 elf_local_got_refcounts (abfd) = local_got_refcounts;
1268 }
1269 if (local_got_refcounts[r_symndx] == 0)
1270 {
1271 sgot->size += 4;
0e1862bb 1272 if (bfd_link_pic (info))
c96a8570
BS
1273 {
1274 /* If we are generating a shared object, we need to
07d6d2b8
AM
1275 output a R_68K_RELATIVE reloc so that the dynamic
1276 linker can adjust this GOT entry. */
c96a8570
BS
1277 srelgot->size += sizeof (Elf32_External_Rela);
1278 }
1279 }
1280 local_got_refcounts[r_symndx]++;
1281 }
1282 break;
48d502e1 1283
c96a8570
BS
1284 default:
1285 break;
1286 }
1287 }
1288
1289 return TRUE;
48d502e1
BS
1290}
1291
c96a8570 1292static enum elf_reloc_type_class
7e612e98
AM
1293elf32_bfin_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
1294 const asection *rel_sec ATTRIBUTE_UNUSED,
1295 const Elf_Internal_Rela * rela)
48d502e1 1296{
c96a8570
BS
1297 switch ((int) ELF32_R_TYPE (rela->r_info))
1298 {
1299 default:
1300 return reloc_class_normal;
1301 }
1302}
1303\f
1304static bfd_reloc_status_type
1305bfin_final_link_relocate (Elf_Internal_Rela *rel, reloc_howto_type *howto,
1306 bfd *input_bfd, asection *input_section,
1307 bfd_byte *contents, bfd_vma address,
1308 bfd_vma value, bfd_vma addend)
1309{
1310 int r_type = ELF32_R_TYPE (rel->r_info);
48d502e1 1311
cb88ce9f 1312 if (r_type == R_BFIN_PCREL24 || r_type == R_BFIN_PCREL24_JUMP_L)
c96a8570
BS
1313 {
1314 bfd_reloc_status_type r = bfd_reloc_ok;
1315 bfd_vma x;
48d502e1 1316
c96a8570
BS
1317 if (address > bfd_get_section_limit (input_bfd, input_section))
1318 return bfd_reloc_outofrange;
48d502e1 1319
c96a8570 1320 value += addend;
48d502e1 1321
c96a8570
BS
1322 /* Perform usual pc-relative correction. */
1323 value -= input_section->output_section->vma + input_section->output_offset;
1324 value -= address;
48d502e1 1325
c96a8570
BS
1326 /* We are getting reloc_entry->address 2 byte off from
1327 the start of instruction. Assuming absolute postion
1328 of the reloc data. But, following code had been written assuming
1329 reloc address is starting at begining of instruction.
1330 To compensate that I have increased the value of
1331 relocation by 1 (effectively 2) and used the addr -2 instead of addr. */
48d502e1 1332
c96a8570
BS
1333 value += 2;
1334 address -= 2;
48d502e1 1335
c96a8570
BS
1336 if ((value & 0xFF000000) != 0
1337 && (value & 0xFF000000) != 0xFF000000)
1338 r = bfd_reloc_overflow;
48d502e1 1339
c96a8570 1340 value >>= 1;
48d502e1 1341
c96a8570
BS
1342 x = bfd_get_16 (input_bfd, contents + address);
1343 x = (x & 0xff00) | ((value >> 16) & 0xff);
1344 bfd_put_16 (input_bfd, x, contents + address);
48d502e1 1345
c96a8570
BS
1346 x = bfd_get_16 (input_bfd, contents + address + 2);
1347 x = value & 0xFFFF;
1348 bfd_put_16 (input_bfd, x, contents + address + 2);
1349 return r;
1350 }
48d502e1 1351
c96a8570
BS
1352 return _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
1353 rel->r_offset, value, addend);
48d502e1 1354
48d502e1
BS
1355}
1356
c96a8570
BS
1357static bfd_boolean
1358bfin_relocate_section (bfd * output_bfd,
1359 struct bfd_link_info *info,
1360 bfd * input_bfd,
1361 asection * input_section,
1362 bfd_byte * contents,
1363 Elf_Internal_Rela * relocs,
1364 Elf_Internal_Sym * local_syms,
1365 asection ** local_sections)
48d502e1 1366{
c96a8570
BS
1367 bfd *dynobj;
1368 Elf_Internal_Shdr *symtab_hdr;
1369 struct elf_link_hash_entry **sym_hashes;
1370 bfd_vma *local_got_offsets;
1371 asection *sgot;
c96a8570
BS
1372 Elf_Internal_Rela *rel;
1373 Elf_Internal_Rela *relend;
1374 int i = 0;
48d502e1 1375
c96a8570
BS
1376 dynobj = elf_hash_table (info)->dynobj;
1377 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1378 sym_hashes = elf_sym_hashes (input_bfd);
1379 local_got_offsets = elf_local_got_offsets (input_bfd);
48d502e1 1380
c96a8570 1381 sgot = NULL;
48d502e1 1382
c96a8570
BS
1383 rel = relocs;
1384 relend = relocs + input_section->reloc_count;
1385 for (; rel < relend; rel++, i++)
1386 {
1387 int r_type;
1388 reloc_howto_type *howto;
1389 unsigned long r_symndx;
1390 struct elf_link_hash_entry *h;
1391 Elf_Internal_Sym *sym;
1392 asection *sec;
1393 bfd_vma relocation = 0;
1394 bfd_boolean unresolved_reloc;
1395 bfd_reloc_status_type r;
1396 bfd_vma address;
48d502e1 1397
c96a8570
BS
1398 r_type = ELF32_R_TYPE (rel->r_info);
1399 if (r_type < 0 || r_type >= 243)
1400 {
1401 bfd_set_error (bfd_error_bad_value);
1402 return FALSE;
1403 }
48d502e1 1404
c96a8570 1405 if (r_type == R_BFIN_GNU_VTENTRY
07d6d2b8 1406 || r_type == R_BFIN_GNU_VTINHERIT)
c96a8570 1407 continue;
48d502e1 1408
c96a8570
BS
1409 howto = bfin_reloc_type_lookup (input_bfd, r_type);
1410 if (howto == NULL)
1411 {
1412 bfd_set_error (bfd_error_bad_value);
1413 return FALSE;
1414 }
1415 r_symndx = ELF32_R_SYM (rel->r_info);
48d502e1 1416
c96a8570
BS
1417 h = NULL;
1418 sym = NULL;
1419 sec = NULL;
1420 unresolved_reloc = FALSE;
48d502e1 1421
c96a8570
BS
1422 if (r_symndx < symtab_hdr->sh_info)
1423 {
1424 sym = local_syms + r_symndx;
1425 sec = local_sections[r_symndx];
1426 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1427 }
1428 else
1429 {
62d887d4 1430 bfd_boolean warned, ignored;
48d502e1 1431
c96a8570
BS
1432 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1433 r_symndx, symtab_hdr, sym_hashes,
1434 h, sec, relocation,
62d887d4 1435 unresolved_reloc, warned, ignored);
c96a8570 1436 }
48d502e1 1437
dbaa2011 1438 if (sec != NULL && discarded_section (sec))
e4067dbb 1439 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 1440 rel, 1, relend, howto, 0, contents);
48d502e1 1441
0e1862bb 1442 if (bfd_link_relocatable (info))
c96a8570 1443 continue;
48d502e1 1444
c96a8570 1445 address = rel->r_offset;
48d502e1 1446
c96a8570
BS
1447 /* Then, process normally. */
1448 switch (r_type)
1449 {
1450 case R_BFIN_GNU_VTINHERIT:
1451 case R_BFIN_GNU_VTENTRY:
1452 return bfd_reloc_ok;
48d502e1 1453
cb88ce9f 1454 case R_BFIN_GOT:
c96a8570
BS
1455 /* Relocation is to the address of the entry for this symbol
1456 in the global offset table. */
1457 if (h != NULL
1458 && strcmp (h->root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0)
1459 goto do_default;
1460 /* Fall through. */
1461 /* Relocation is the offset of the entry for this symbol in
1462 the global offset table. */
48d502e1 1463
c96a8570
BS
1464 {
1465 bfd_vma off;
48d502e1 1466
ce558b89 1467 if (dynobj == NULL)
c96a8570 1468 {
ce558b89
AM
1469 /* Create the .got section. */
1470 elf_hash_table (info)->dynobj = dynobj = output_bfd;
1471 if (!_bfd_elf_create_got_section (dynobj, info))
1472 return FALSE;
c96a8570 1473 }
48d502e1 1474
ce558b89
AM
1475 sgot = elf_hash_table (info)->sgot;
1476 BFD_ASSERT (sgot != NULL);
1477
c96a8570
BS
1478 if (h != NULL)
1479 {
1480 bfd_boolean dyn;
48d502e1 1481
c96a8570
BS
1482 off = h->got.offset;
1483 BFD_ASSERT (off != (bfd_vma) - 1);
1484 dyn = elf_hash_table (info)->dynamic_sections_created;
48d502e1 1485
0e1862bb
L
1486 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
1487 bfd_link_pic (info),
1488 h)
1489 || (bfd_link_pic (info)
c96a8570
BS
1490 && (info->symbolic
1491 || h->dynindx == -1
1492 || h->forced_local)
1493 && h->def_regular))
1494 {
1495 /* This is actually a static link, or it is a
1496 -Bsymbolic link and the symbol is defined
1497 locally, or the symbol was forced to be local
1498 because of a version file.. We must initialize
1499 this entry in the global offset table. Since
1500 the offset must always be a multiple of 4, we
1501 use the least significant bit to record whether
1502 we have initialized it already.
48d502e1 1503
c96a8570
BS
1504 When doing a dynamic link, we create a .rela.got
1505 relocation entry to initialize the value. This
1506 is done in the finish_dynamic_symbol routine. */
1507 if ((off & 1) != 0)
1508 off &= ~1;
1509 else
1510 {
1511 bfd_put_32 (output_bfd, relocation,
1512 sgot->contents + off);
1513 h->got.offset |= 1;
1514 }
1515 }
1516 else
1517 unresolved_reloc = FALSE;
1518 }
1519 else
1520 {
1521 BFD_ASSERT (local_got_offsets != NULL);
1522 off = local_got_offsets[r_symndx];
1523 BFD_ASSERT (off != (bfd_vma) - 1);
48d502e1 1524
c96a8570
BS
1525 /* The offset must always be a multiple of 4. We use
1526 the least significant bit to record whether we have
1527 already generated the necessary reloc. */
1528 if ((off & 1) != 0)
1529 off &= ~1;
1530 else
1531 {
1532 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
48d502e1 1533
0e1862bb 1534 if (bfd_link_pic (info))
c96a8570
BS
1535 {
1536 asection *s;
1537 Elf_Internal_Rela outrel;
1538 bfd_byte *loc;
48d502e1 1539
ce558b89 1540 s = elf_hash_table (info)->srelgot;
c96a8570 1541 BFD_ASSERT (s != NULL);
48d502e1 1542
c96a8570
BS
1543 outrel.r_offset = (sgot->output_section->vma
1544 + sgot->output_offset + off);
1545 outrel.r_info =
cb88ce9f 1546 ELF32_R_INFO (0, R_BFIN_PCREL24);
c96a8570
BS
1547 outrel.r_addend = relocation;
1548 loc = s->contents;
1549 loc +=
1550 s->reloc_count++ * sizeof (Elf32_External_Rela);
1551 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1552 }
48d502e1 1553
c96a8570
BS
1554 local_got_offsets[r_symndx] |= 1;
1555 }
1556 }
48d502e1 1557
c96a8570
BS
1558 relocation = sgot->output_offset + off;
1559 rel->r_addend = 0;
07d6d2b8
AM
1560 /* bfin : preg = [preg + 17bitdiv4offset] relocation is div by 4. */
1561 relocation /= 4;
c96a8570
BS
1562 }
1563 goto do_default;
1564
1565 default:
1566 do_default:
1567 r = bfin_final_link_relocate (rel, howto, input_bfd, input_section,
1568 contents, address,
1569 relocation, rel->r_addend);
1570
1571 break;
48d502e1
BS
1572 }
1573
c96a8570 1574 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
07d6d2b8
AM
1575 because such sections are not SEC_ALLOC and thus ld.so will
1576 not process them. */
c96a8570 1577 if (unresolved_reloc
1d5316ab
AM
1578 && !((input_section->flags & SEC_DEBUGGING) != 0 && h->def_dynamic)
1579 && _bfd_elf_section_offset (output_bfd, info, input_section,
1580 rel->r_offset) != (bfd_vma) -1)
48d502e1 1581 {
4eca0228 1582 _bfd_error_handler
695344c0 1583 /* xgettext:c-format */
2dcf00ce
AM
1584 (_("%pB(%pA+%#" PRIx64 "): "
1585 "unresolvable relocation against symbol `%s'"),
1586 input_bfd, input_section, (uint64_t) rel->r_offset,
1587 h->root.root.string);
c96a8570 1588 return FALSE;
48d502e1 1589 }
48d502e1 1590
c96a8570 1591 if (r != bfd_reloc_ok)
48d502e1 1592 {
c96a8570
BS
1593 const char *name;
1594
1595 if (h != NULL)
1596 name = h->root.root.string;
1597 else
48d502e1 1598 {
c96a8570
BS
1599 name = bfd_elf_string_from_elf_section (input_bfd,
1600 symtab_hdr->sh_link,
1601 sym->st_name);
1602 if (name == NULL)
1603 return FALSE;
1604 if (*name == '\0')
fd361982 1605 name = bfd_section_name (sec);
48d502e1 1606 }
c96a8570
BS
1607
1608 if (r == bfd_reloc_overflow)
1a72702b
AM
1609 (*info->callbacks->reloc_overflow)
1610 (info, (h ? &h->root : NULL), name, howto->name,
1611 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
48d502e1
BS
1612 else
1613 {
4eca0228 1614 _bfd_error_handler
695344c0 1615 /* xgettext:c-format */
2dcf00ce
AM
1616 (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"),
1617 input_bfd, input_section, (uint64_t) rel->r_offset,
1618 name, (int) r);
c96a8570 1619 return FALSE;
48d502e1 1620 }
48d502e1 1621 }
48d502e1
BS
1622 }
1623
c96a8570
BS
1624 return TRUE;
1625}
48d502e1 1626
c96a8570
BS
1627static asection *
1628bfin_gc_mark_hook (asection * sec,
1629 struct bfd_link_info *info,
1630 Elf_Internal_Rela * rel,
1631 struct elf_link_hash_entry *h,
07d6d2b8 1632 Elf_Internal_Sym * sym)
c96a8570
BS
1633{
1634 if (h != NULL)
1635 switch (ELF32_R_TYPE (rel->r_info))
1636 {
1637 case R_BFIN_GNU_VTINHERIT:
1638 case R_BFIN_GNU_VTENTRY:
1639 return NULL;
1640 }
48d502e1 1641
c96a8570
BS
1642 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1643}
c96a8570 1644\f
6d00b590
AM
1645extern const bfd_target bfin_elf32_fdpic_vec;
1646#define IS_FDPIC(bfd) ((bfd)->xvec == &bfin_elf32_fdpic_vec)
0f64bb02 1647
4dfe6ac6
NC
1648/* An extension of the elf hash table data structure,
1649 containing some additional Blackfin-specific data. */
c96a8570 1650struct bfinfdpic_elf_link_hash_table
c35e54f4 1651{
c96a8570 1652 struct elf_link_hash_table elf;
c35e54f4 1653
c96a8570
BS
1654 /* A pointer to the .rofixup section. */
1655 asection *sgotfixup;
c96a8570
BS
1656 /* GOT base offset. */
1657 bfd_vma got0;
1658 /* Location of the first non-lazy PLT entry, i.e., the number of
1659 bytes taken by lazy PLT entries. */
1660 bfd_vma plt0;
1661 /* A hash table holding information about which symbols were
1662 referenced with which PIC-related relocations. */
1663 struct htab *relocs_info;
6a9adeca
BS
1664 /* Summary reloc information collected by
1665 _bfinfdpic_count_got_plt_entries. */
1666 struct _bfinfdpic_dynamic_got_info *g;
c96a8570 1667};
c35e54f4 1668
c96a8570 1669/* Get the Blackfin ELF linker hash table from a link_info structure. */
c35e54f4 1670
c96a8570 1671#define bfinfdpic_hash_table(info) \
4dfe6ac6
NC
1672 (elf_hash_table_id ((struct elf_link_hash_table *) ((info)->hash)) \
1673 == BFIN_ELF_DATA ? ((struct bfinfdpic_elf_link_hash_table *) ((info)->hash)) : NULL)
c35e54f4 1674
c96a8570 1675#define bfinfdpic_got_section(info) \
ce558b89 1676 (bfinfdpic_hash_table (info)->elf.sgot)
c96a8570 1677#define bfinfdpic_gotrel_section(info) \
ce558b89 1678 (bfinfdpic_hash_table (info)->elf.srelgot)
c96a8570
BS
1679#define bfinfdpic_gotfixup_section(info) \
1680 (bfinfdpic_hash_table (info)->sgotfixup)
1681#define bfinfdpic_plt_section(info) \
ce558b89 1682 (bfinfdpic_hash_table (info)->elf.splt)
c96a8570 1683#define bfinfdpic_pltrel_section(info) \
ce558b89 1684 (bfinfdpic_hash_table (info)->elf.srelplt)
c96a8570
BS
1685#define bfinfdpic_relocs_info(info) \
1686 (bfinfdpic_hash_table (info)->relocs_info)
1687#define bfinfdpic_got_initial_offset(info) \
1688 (bfinfdpic_hash_table (info)->got0)
1689#define bfinfdpic_plt_initial_offset(info) \
1690 (bfinfdpic_hash_table (info)->plt0)
6a9adeca
BS
1691#define bfinfdpic_dynamic_got_plt_info(info) \
1692 (bfinfdpic_hash_table (info)->g)
c35e54f4 1693
c96a8570
BS
1694/* The name of the dynamic interpreter. This is put in the .interp
1695 section. */
c35e54f4 1696
c96a8570 1697#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
c35e54f4 1698
c96a8570 1699#define DEFAULT_STACK_SIZE 0x20000
c35e54f4 1700
c96a8570
BS
1701/* This structure is used to collect the number of entries present in
1702 each addressable range of the got. */
1703struct _bfinfdpic_dynamic_got_info
1704{
1705 /* Several bits of information about the current link. */
1706 struct bfd_link_info *info;
1707 /* Total size needed for GOT entries within the 18- or 32-bit
1708 ranges. */
1709 bfd_vma got17m4, gothilo;
1710 /* Total size needed for function descriptor entries within the 18-
1711 or 32-bit ranges. */
1712 bfd_vma fd17m4, fdhilo;
1713 /* Total size needed function descriptor entries referenced in PLT
1714 entries, that would be profitable to place in offsets close to
1715 the PIC register. */
1716 bfd_vma fdplt;
1717 /* Total size needed by lazy PLT entries. */
1718 bfd_vma lzplt;
1719 /* Number of relocations carried over from input object files. */
1720 unsigned long relocs;
1721 /* Number of fixups introduced by relocations in input object files. */
1722 unsigned long fixups;
1723};
c35e54f4 1724
c96a8570 1725/* Create a Blackfin ELF linker hash table. */
c35e54f4 1726
c96a8570
BS
1727static struct bfd_link_hash_table *
1728bfinfdpic_elf_link_hash_table_create (bfd *abfd)
1729{
1730 struct bfinfdpic_elf_link_hash_table *ret;
986f0783 1731 size_t amt = sizeof (struct bfinfdpic_elf_link_hash_table);
c35e54f4 1732
22cdc249 1733 ret = bfd_zmalloc (amt);
c96a8570
BS
1734 if (ret == NULL)
1735 return NULL;
c35e54f4 1736
c96a8570
BS
1737 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
1738 _bfd_elf_link_hash_newfunc,
4dfe6ac6
NC
1739 sizeof (struct elf_link_hash_entry),
1740 BFIN_ELF_DATA))
c96a8570
BS
1741 {
1742 free (ret);
1743 return NULL;
1744 }
c35e54f4 1745
c96a8570
BS
1746 return &ret->elf.root;
1747}
48d502e1 1748
c96a8570
BS
1749/* Decide whether a reference to a symbol can be resolved locally or
1750 not. If the symbol is protected, we want the local address, but
1751 its function descriptor must be assigned by the dynamic linker. */
1752#define BFINFDPIC_SYM_LOCAL(INFO, H) \
1753 (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \
1754 || ! elf_hash_table (INFO)->dynamic_sections_created)
1755#define BFINFDPIC_FUNCDESC_LOCAL(INFO, H) \
1756 ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created)
48d502e1 1757
c96a8570
BS
1758/* This structure collects information on what kind of GOT, PLT or
1759 function descriptors are required by relocations that reference a
1760 certain symbol. */
1761struct bfinfdpic_relocs_info
1762{
1763 /* The index of the symbol, as stored in the relocation r_info, if
1764 we have a local symbol; -1 otherwise. */
1765 long symndx;
1766 union
1767 {
1768 /* The input bfd in which the symbol is defined, if it's a local
1769 symbol. */
1770 bfd *abfd;
1771 /* If symndx == -1, the hash table entry corresponding to a global
1772 symbol (even if it turns out to bind locally, in which case it
1773 should ideally be replaced with section's symndx + addend). */
1774 struct elf_link_hash_entry *h;
1775 } d;
1776 /* The addend of the relocation that references the symbol. */
1777 bfd_vma addend;
48d502e1 1778
c96a8570
BS
1779 /* The fields above are used to identify an entry. The fields below
1780 contain information on how an entry is used and, later on, which
1781 locations it was assigned. */
1782 /* The following 2 fields record whether the symbol+addend above was
1783 ever referenced with a GOT relocation. The 17M4 suffix indicates a
1784 GOT17M4 relocation; hilo is used for GOTLO/GOTHI pairs. */
1785 unsigned got17m4;
1786 unsigned gothilo;
1787 /* Whether a FUNCDESC relocation references symbol+addend. */
1788 unsigned fd;
1789 /* Whether a FUNCDESC_GOT relocation references symbol+addend. */
1790 unsigned fdgot17m4;
1791 unsigned fdgothilo;
1792 /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */
1793 unsigned fdgoff17m4;
1794 unsigned fdgoffhilo;
1795 /* Whether symbol+addend is referenced with GOTOFF17M4, GOTOFFLO or
1796 GOTOFFHI relocations. The addend doesn't really matter, since we
1797 envision that this will only be used to check whether the symbol
1798 is mapped to the same segment as the got. */
1799 unsigned gotoff;
1800 /* Whether symbol+addend is referenced by a LABEL24 relocation. */
1801 unsigned call;
1802 /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE
1803 relocation. */
1804 unsigned sym;
1805 /* Whether we need a PLT entry for a symbol. Should be implied by
1806 something like:
1807 (call && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h)) */
1808 unsigned plt:1;
1809 /* Whether a function descriptor should be created in this link unit
1810 for symbol+addend. Should be implied by something like:
1811 (plt || fdgotoff17m4 || fdgotofflohi
1812 || ((fd || fdgot17m4 || fdgothilo)
07d6d2b8 1813 && (symndx != -1 || BFINFDPIC_FUNCDESC_LOCAL (info, d.h)))) */
c96a8570
BS
1814 unsigned privfd:1;
1815 /* Whether a lazy PLT entry is needed for this symbol+addend.
1816 Should be implied by something like:
1817 (privfd && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h)
1818 && ! (info->flags & DF_BIND_NOW)) */
1819 unsigned lazyplt:1;
1820 /* Whether we've already emitted GOT relocations and PLT entries as
1821 needed for this symbol. */
1822 unsigned done:1;
48d502e1 1823
cb88ce9f 1824 /* The number of R_BFIN_BYTE4_DATA, R_BFIN_FUNCDESC and R_BFIN_FUNCDESC_VALUE
c96a8570
BS
1825 relocations referencing the symbol. */
1826 unsigned relocs32, relocsfd, relocsfdv;
48d502e1 1827
c96a8570
BS
1828 /* The number of .rofixups entries and dynamic relocations allocated
1829 for this symbol, minus any that might have already been used. */
1830 unsigned fixups, dynrelocs;
48d502e1 1831
c96a8570
BS
1832 /* The offsets of the GOT entries assigned to symbol+addend, to the
1833 function descriptor's address, and to a function descriptor,
1834 respectively. Should be zero if unassigned. The offsets are
1835 counted from the value that will be assigned to the PIC register,
1836 not from the beginning of the .got section. */
1837 bfd_signed_vma got_entry, fdgot_entry, fd_entry;
1838 /* The offsets of the PLT entries assigned to symbol+addend,
1839 non-lazy and lazy, respectively. If unassigned, should be
1840 (bfd_vma)-1. */
1841 bfd_vma plt_entry, lzplt_entry;
1842};
48d502e1 1843
c96a8570
BS
1844/* Compute a hash with the key fields of an bfinfdpic_relocs_info entry. */
1845static hashval_t
1846bfinfdpic_relocs_info_hash (const void *entry_)
1847{
1848 const struct bfinfdpic_relocs_info *entry = entry_;
48d502e1 1849
c96a8570
BS
1850 return (entry->symndx == -1
1851 ? (long) entry->d.h->root.root.hash
1852 : entry->symndx + (long) entry->d.abfd->id * 257) + entry->addend;
1853}
f4707595 1854
c96a8570
BS
1855/* Test whether the key fields of two bfinfdpic_relocs_info entries are
1856 identical. */
1857static int
1858bfinfdpic_relocs_info_eq (const void *entry1, const void *entry2)
0f64bb02 1859{
c96a8570
BS
1860 const struct bfinfdpic_relocs_info *e1 = entry1;
1861 const struct bfinfdpic_relocs_info *e2 = entry2;
0f64bb02 1862
c96a8570
BS
1863 return e1->symndx == e2->symndx && e1->addend == e2->addend
1864 && (e1->symndx == -1 ? e1->d.h == e2->d.h : e1->d.abfd == e2->d.abfd);
1865}
48d502e1 1866
c96a8570
BS
1867/* Find or create an entry in a hash table HT that matches the key
1868 fields of the given ENTRY. If it's not found, memory for a new
1869 entry is allocated in ABFD's obstack. */
1870static struct bfinfdpic_relocs_info *
1871bfinfdpic_relocs_info_find (struct htab *ht,
1872 bfd *abfd,
1873 const struct bfinfdpic_relocs_info *entry,
1874 enum insert_option insert)
1875{
83fd9437
JZ
1876 struct bfinfdpic_relocs_info **loc;
1877
1878 if (!ht)
1879 return NULL;
1880
1881 loc = (struct bfinfdpic_relocs_info **) htab_find_slot (ht, entry, insert);
0f64bb02 1882
c96a8570
BS
1883 if (! loc)
1884 return NULL;
0f64bb02 1885
c96a8570
BS
1886 if (*loc)
1887 return *loc;
0f64bb02 1888
c96a8570 1889 *loc = bfd_zalloc (abfd, sizeof (**loc));
0f64bb02 1890
c96a8570
BS
1891 if (! *loc)
1892 return *loc;
0f64bb02 1893
c96a8570
BS
1894 (*loc)->symndx = entry->symndx;
1895 (*loc)->d = entry->d;
1896 (*loc)->addend = entry->addend;
1897 (*loc)->plt_entry = (bfd_vma)-1;
1898 (*loc)->lzplt_entry = (bfd_vma)-1;
0f64bb02 1899
c96a8570
BS
1900 return *loc;
1901}
48d502e1 1902
c96a8570
BS
1903/* Obtain the address of the entry in HT associated with H's symbol +
1904 addend, creating a new entry if none existed. ABFD is only used
1905 for memory allocation purposes. */
1906inline static struct bfinfdpic_relocs_info *
1907bfinfdpic_relocs_info_for_global (struct htab *ht,
2c3fc389
NC
1908 bfd *abfd,
1909 struct elf_link_hash_entry *h,
1910 bfd_vma addend,
1911 enum insert_option insert)
c96a8570
BS
1912{
1913 struct bfinfdpic_relocs_info entry;
0f64bb02 1914
c96a8570
BS
1915 entry.symndx = -1;
1916 entry.d.h = h;
1917 entry.addend = addend;
f4707595 1918
c96a8570
BS
1919 return bfinfdpic_relocs_info_find (ht, abfd, &entry, insert);
1920}
48d502e1 1921
c96a8570
BS
1922/* Obtain the address of the entry in HT associated with the SYMNDXth
1923 local symbol of the input bfd ABFD, plus the addend, creating a new
1924 entry if none existed. */
1925inline static struct bfinfdpic_relocs_info *
1926bfinfdpic_relocs_info_for_local (struct htab *ht,
1927 bfd *abfd,
1928 long symndx,
1929 bfd_vma addend,
1930 enum insert_option insert)
1931{
1932 struct bfinfdpic_relocs_info entry;
ab96bf03 1933
c96a8570
BS
1934 entry.symndx = symndx;
1935 entry.d.abfd = abfd;
1936 entry.addend = addend;
48d502e1 1937
c96a8570
BS
1938 return bfinfdpic_relocs_info_find (ht, abfd, &entry, insert);
1939}
48d502e1 1940
c96a8570
BS
1941/* Merge fields set by check_relocs() of two entries that end up being
1942 mapped to the same (presumably global) symbol. */
0f64bb02 1943
c96a8570
BS
1944inline static void
1945bfinfdpic_pic_merge_early_relocs_info (struct bfinfdpic_relocs_info *e2,
2c3fc389 1946 struct bfinfdpic_relocs_info const *e1)
c96a8570
BS
1947{
1948 e2->got17m4 |= e1->got17m4;
1949 e2->gothilo |= e1->gothilo;
1950 e2->fd |= e1->fd;
1951 e2->fdgot17m4 |= e1->fdgot17m4;
1952 e2->fdgothilo |= e1->fdgothilo;
1953 e2->fdgoff17m4 |= e1->fdgoff17m4;
1954 e2->fdgoffhilo |= e1->fdgoffhilo;
1955 e2->gotoff |= e1->gotoff;
1956 e2->call |= e1->call;
1957 e2->sym |= e1->sym;
1958}
48d502e1 1959
c96a8570
BS
1960/* Every block of 65535 lazy PLT entries shares a single call to the
1961 resolver, inserted in the 32768th lazy PLT entry (i.e., entry #
1962 32767, counting from 0). All other lazy PLT entries branch to it
1963 in a single instruction. */
48d502e1 1964
c96a8570
BS
1965#define LZPLT_RESOLVER_EXTRA 10
1966#define LZPLT_NORMAL_SIZE 6
1967#define LZPLT_ENTRIES 1362
48d502e1 1968
c96a8570
BS
1969#define BFINFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) LZPLT_NORMAL_SIZE * LZPLT_ENTRIES + LZPLT_RESOLVER_EXTRA)
1970#define BFINFDPIC_LZPLT_RESOLV_LOC (LZPLT_NORMAL_SIZE * LZPLT_ENTRIES / 2)
48d502e1 1971
c96a8570 1972/* Add a dynamic relocation to the SRELOC section. */
48d502e1 1973
c96a8570
BS
1974inline static bfd_vma
1975_bfinfdpic_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset,
1976 int reloc_type, long dynindx, bfd_vma addend,
1977 struct bfinfdpic_relocs_info *entry)
1978{
1979 Elf_Internal_Rela outrel;
1980 bfd_vma reloc_offset;
0f64bb02 1981
c96a8570
BS
1982 outrel.r_offset = offset;
1983 outrel.r_info = ELF32_R_INFO (dynindx, reloc_type);
1984 outrel.r_addend = addend;
48d502e1 1985
c96a8570
BS
1986 reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rel);
1987 BFD_ASSERT (reloc_offset < sreloc->size);
1988 bfd_elf32_swap_reloc_out (output_bfd, &outrel,
1989 sreloc->contents + reloc_offset);
1990 sreloc->reloc_count++;
48d502e1 1991
c96a8570
BS
1992 /* If the entry's index is zero, this relocation was probably to a
1993 linkonce section that got discarded. We reserved a dynamic
1994 relocation, but it was for another entry than the one we got at
1995 the time of emitting the relocation. Unfortunately there's no
1996 simple way for us to catch this situation, since the relocation
1997 is cleared right before calling relocate_section, at which point
1998 we no longer know what the relocation used to point to. */
1999 if (entry->symndx)
2000 {
2001 BFD_ASSERT (entry->dynrelocs > 0);
2002 entry->dynrelocs--;
2003 }
48d502e1 2004
c96a8570
BS
2005 return reloc_offset;
2006}
0f64bb02 2007
c96a8570 2008/* Add a fixup to the ROFIXUP section. */
48d502e1 2009
c96a8570
BS
2010static bfd_vma
2011_bfinfdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma offset,
2c3fc389 2012 struct bfinfdpic_relocs_info *entry)
c96a8570
BS
2013{
2014 bfd_vma fixup_offset;
8aafe8b4 2015
c96a8570
BS
2016 if (rofixup->flags & SEC_EXCLUDE)
2017 return -1;
0f64bb02 2018
c96a8570
BS
2019 fixup_offset = rofixup->reloc_count * 4;
2020 if (rofixup->contents)
2021 {
2022 BFD_ASSERT (fixup_offset < rofixup->size);
2023 bfd_put_32 (output_bfd, offset, rofixup->contents + fixup_offset);
2024 }
2025 rofixup->reloc_count++;
0f64bb02 2026
c96a8570
BS
2027 if (entry && entry->symndx)
2028 {
2029 /* See discussion about symndx == 0 in _bfinfdpic_add_dyn_reloc
2030 above. */
2031 BFD_ASSERT (entry->fixups > 0);
2032 entry->fixups--;
2033 }
f4707595 2034
c96a8570
BS
2035 return fixup_offset;
2036}
0f64bb02 2037
c96a8570
BS
2038/* Find the segment number in which OSEC, and output section, is
2039 located. */
ca889129 2040
c96a8570
BS
2041static unsigned
2042_bfinfdpic_osec_to_segment (bfd *output_bfd, asection *osec)
2043{
2044 Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section (output_bfd, osec);
0f64bb02 2045
c96a8570
BS
2046 return (p != NULL) ? p - elf_tdata (output_bfd)->phdr : -1;
2047}
2048
2049inline static bfd_boolean
2050_bfinfdpic_osec_readonly_p (bfd *output_bfd, asection *osec)
2051{
2052 unsigned seg = _bfinfdpic_osec_to_segment (output_bfd, osec);
2053
2054 return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W);
2055}
2056
2057/* Generate relocations for GOT entries, function descriptors, and
2058 code for PLT and lazy PLT entries. */
2059
2060inline static bfd_boolean
2061_bfinfdpic_emit_got_relocs_plt_entries (struct bfinfdpic_relocs_info *entry,
2062 bfd *output_bfd,
2063 struct bfd_link_info *info,
2064 asection *sec,
2065 Elf_Internal_Sym *sym,
2066 bfd_vma addend)
c96a8570 2067{
2c3fc389 2068 bfd_vma fd_lazy_rel_offset = (bfd_vma) -1;
c96a8570
BS
2069 int dynindx = -1;
2070
2071 if (entry->done)
2072 return TRUE;
2073 entry->done = 1;
2074
2075 if (entry->got_entry || entry->fdgot_entry || entry->fd_entry)
2076 {
2077 /* If the symbol is dynamic, consider it for dynamic
2078 relocations, otherwise decay to section + offset. */
2079 if (entry->symndx == -1 && entry->d.h->dynindx != -1)
2080 dynindx = entry->d.h->dynindx;
2081 else
2082 {
6a9adeca
BS
2083 if (sec
2084 && sec->output_section
c96a8570
BS
2085 && ! bfd_is_abs_section (sec->output_section)
2086 && ! bfd_is_und_section (sec->output_section))
2087 dynindx = elf_section_data (sec->output_section)->dynindx;
2088 else
2089 dynindx = 0;
2090 }
2091 }
2092
2093 /* Generate relocation for GOT entry pointing to the symbol. */
2094 if (entry->got_entry)
2095 {
2096 int idx = dynindx;
2097 bfd_vma ad = addend;
2098
2099 /* If the symbol is dynamic but binds locally, use
2100 section+offset. */
2101 if (sec && (entry->symndx != -1
2102 || BFINFDPIC_SYM_LOCAL (info, entry->d.h)))
2103 {
2104 if (entry->symndx == -1)
2105 ad += entry->d.h->root.u.def.value;
2106 else
2107 ad += sym->st_value;
2108 ad += sec->output_offset;
2109 if (sec->output_section && elf_section_data (sec->output_section))
2110 idx = elf_section_data (sec->output_section)->dynindx;
2111 else
2112 idx = 0;
2113 }
2114
2115 /* If we're linking an executable at a fixed address, we can
2116 omit the dynamic relocation as long as the symbol is local to
2117 this module. */
3cbc1e5e 2118 if (bfd_link_pde (info)
c96a8570
BS
2119 && (entry->symndx != -1
2120 || BFINFDPIC_SYM_LOCAL (info, entry->d.h)))
2121 {
2122 if (sec)
2123 ad += sec->output_section->vma;
2124 if (entry->symndx != -1
2125 || entry->d.h->root.type != bfd_link_hash_undefweak)
2126 _bfinfdpic_add_rofixup (output_bfd,
2127 bfinfdpic_gotfixup_section (info),
2128 bfinfdpic_got_section (info)->output_section
2129 ->vma
2130 + bfinfdpic_got_section (info)->output_offset
2131 + bfinfdpic_got_initial_offset (info)
2132 + entry->got_entry, entry);
2133 }
2134 else
2135 _bfinfdpic_add_dyn_reloc (output_bfd, bfinfdpic_gotrel_section (info),
2136 _bfd_elf_section_offset
2137 (output_bfd, info,
2138 bfinfdpic_got_section (info),
2139 bfinfdpic_got_initial_offset (info)
2140 + entry->got_entry)
2141 + bfinfdpic_got_section (info)
2142 ->output_section->vma
2143 + bfinfdpic_got_section (info)->output_offset,
cb88ce9f 2144 R_BFIN_BYTE4_DATA, idx, ad, entry);
c96a8570
BS
2145
2146 bfd_put_32 (output_bfd, ad,
2147 bfinfdpic_got_section (info)->contents
2148 + bfinfdpic_got_initial_offset (info)
2149 + entry->got_entry);
2150 }
2151
2152 /* Generate relocation for GOT entry pointing to a canonical
2153 function descriptor. */
2154 if (entry->fdgot_entry)
2155 {
2156 int reloc, idx;
2157 bfd_vma ad = 0;
2158
2159 if (! (entry->symndx == -1
2160 && entry->d.h->root.type == bfd_link_hash_undefweak
2161 && BFINFDPIC_SYM_LOCAL (info, entry->d.h)))
2162 {
2163 /* If the symbol is dynamic and there may be dynamic symbol
2164 resolution because we are, or are linked with, a shared
2165 library, emit a FUNCDESC relocation such that the dynamic
2166 linker will allocate the function descriptor. If the
2167 symbol needs a non-local function descriptor but binds
2168 locally (e.g., its visibility is protected, emit a
2169 dynamic relocation decayed to section+offset. */
2170 if (entry->symndx == -1
2171 && ! BFINFDPIC_FUNCDESC_LOCAL (info, entry->d.h)
2172 && BFINFDPIC_SYM_LOCAL (info, entry->d.h)
3cbc1e5e 2173 && !bfd_link_pde (info))
c96a8570
BS
2174 {
2175 reloc = R_BFIN_FUNCDESC;
2176 idx = elf_section_data (entry->d.h->root.u.def.section
2177 ->output_section)->dynindx;
2178 ad = entry->d.h->root.u.def.section->output_offset
2179 + entry->d.h->root.u.def.value;
2180 }
2181 else if (entry->symndx == -1
2182 && ! BFINFDPIC_FUNCDESC_LOCAL (info, entry->d.h))
2183 {
2184 reloc = R_BFIN_FUNCDESC;
2185 idx = dynindx;
2186 ad = addend;
2187 if (ad)
2188 return FALSE;
2189 }
2190 else
2191 {
2192 /* Otherwise, we know we have a private function descriptor,
2193 so reference it directly. */
2194 if (elf_hash_table (info)->dynamic_sections_created)
2195 BFD_ASSERT (entry->privfd);
cb88ce9f 2196 reloc = R_BFIN_BYTE4_DATA;
c96a8570
BS
2197 idx = elf_section_data (bfinfdpic_got_section (info)
2198 ->output_section)->dynindx;
2199 ad = bfinfdpic_got_section (info)->output_offset
2200 + bfinfdpic_got_initial_offset (info) + entry->fd_entry;
2201 }
2202
2203 /* If there is room for dynamic symbol resolution, emit the
2204 dynamic relocation. However, if we're linking an
2205 executable at a fixed location, we won't have emitted a
2206 dynamic symbol entry for the got section, so idx will be
2207 zero, which means we can and should compute the address
2208 of the private descriptor ourselves. */
3cbc1e5e 2209 if (bfd_link_pde (info)
c96a8570
BS
2210 && (entry->symndx != -1
2211 || BFINFDPIC_FUNCDESC_LOCAL (info, entry->d.h)))
2212 {
2213 ad += bfinfdpic_got_section (info)->output_section->vma;
2214 _bfinfdpic_add_rofixup (output_bfd,
2215 bfinfdpic_gotfixup_section (info),
2216 bfinfdpic_got_section (info)
2217 ->output_section->vma
2218 + bfinfdpic_got_section (info)
2219 ->output_offset
2220 + bfinfdpic_got_initial_offset (info)
2221 + entry->fdgot_entry, entry);
2222 }
2223 else
2224 _bfinfdpic_add_dyn_reloc (output_bfd,
2225 bfinfdpic_gotrel_section (info),
2226 _bfd_elf_section_offset
2227 (output_bfd, info,
2228 bfinfdpic_got_section (info),
2229 bfinfdpic_got_initial_offset (info)
2230 + entry->fdgot_entry)
2231 + bfinfdpic_got_section (info)
2232 ->output_section->vma
2233 + bfinfdpic_got_section (info)
2234 ->output_offset,
2235 reloc, idx, ad, entry);
2236 }
f4707595 2237
c96a8570
BS
2238 bfd_put_32 (output_bfd, ad,
2239 bfinfdpic_got_section (info)->contents
2240 + bfinfdpic_got_initial_offset (info)
2241 + entry->fdgot_entry);
2242 }
2243
2244 /* Generate relocation to fill in a private function descriptor in
2245 the GOT. */
2246 if (entry->fd_entry)
2247 {
2248 int idx = dynindx;
2249 bfd_vma ad = addend;
2250 bfd_vma ofst;
2251 long lowword, highword;
2252
2253 /* If the symbol is dynamic but binds locally, use
2254 section+offset. */
2255 if (sec && (entry->symndx != -1
2256 || BFINFDPIC_SYM_LOCAL (info, entry->d.h)))
2257 {
2258 if (entry->symndx == -1)
2259 ad += entry->d.h->root.u.def.value;
2260 else
2261 ad += sym->st_value;
2262 ad += sec->output_offset;
2263 if (sec->output_section && elf_section_data (sec->output_section))
2264 idx = elf_section_data (sec->output_section)->dynindx;
2265 else
2266 idx = 0;
48d502e1 2267 }
f4707595 2268
c96a8570
BS
2269 /* If we're linking an executable at a fixed address, we can
2270 omit the dynamic relocation as long as the symbol is local to
2271 this module. */
3cbc1e5e 2272 if (bfd_link_pde (info)
c96a8570 2273 && (entry->symndx != -1 || BFINFDPIC_SYM_LOCAL (info, entry->d.h)))
48d502e1 2274 {
c96a8570
BS
2275 if (sec)
2276 ad += sec->output_section->vma;
2277 ofst = 0;
2278 if (entry->symndx != -1
2279 || entry->d.h->root.type != bfd_link_hash_undefweak)
2280 {
2281 _bfinfdpic_add_rofixup (output_bfd,
2282 bfinfdpic_gotfixup_section (info),
2283 bfinfdpic_got_section (info)
2284 ->output_section->vma
2285 + bfinfdpic_got_section (info)
2286 ->output_offset
2287 + bfinfdpic_got_initial_offset (info)
2288 + entry->fd_entry, entry);
2289 _bfinfdpic_add_rofixup (output_bfd,
2290 bfinfdpic_gotfixup_section (info),
2291 bfinfdpic_got_section (info)
2292 ->output_section->vma
2293 + bfinfdpic_got_section (info)
2294 ->output_offset
2295 + bfinfdpic_got_initial_offset (info)
2296 + entry->fd_entry + 4, entry);
2297 }
2298 }
2299 else
2300 {
2301 ofst
2302 = _bfinfdpic_add_dyn_reloc (output_bfd,
2303 entry->lazyplt
2304 ? bfinfdpic_pltrel_section (info)
2305 : bfinfdpic_gotrel_section (info),
2306 _bfd_elf_section_offset
2307 (output_bfd, info,
2308 bfinfdpic_got_section (info),
2309 bfinfdpic_got_initial_offset (info)
2310 + entry->fd_entry)
2311 + bfinfdpic_got_section (info)
2312 ->output_section->vma
2313 + bfinfdpic_got_section (info)
2314 ->output_offset,
2315 R_BFIN_FUNCDESC_VALUE, idx, ad, entry);
48d502e1 2316 }
f4707595 2317
c96a8570
BS
2318 /* If we've omitted the dynamic relocation, just emit the fixed
2319 addresses of the symbol and of the local GOT base offset. */
3cbc1e5e 2320 if (bfd_link_pde (info)
0e1862bb
L
2321 && sec
2322 && sec->output_section)
48d502e1 2323 {
c96a8570
BS
2324 lowword = ad;
2325 highword = bfinfdpic_got_section (info)->output_section->vma
2326 + bfinfdpic_got_section (info)->output_offset
2327 + bfinfdpic_got_initial_offset (info);
2328 }
2329 else if (entry->lazyplt)
2330 {
2331 if (ad)
2332 return FALSE;
f4707595 2333
c96a8570 2334 fd_lazy_rel_offset = ofst;
f4707595 2335
c96a8570
BS
2336 /* A function descriptor used for lazy or local resolving is
2337 initialized such that its high word contains the output
2338 section index in which the PLT entries are located, and
2339 the low word contains the address of the lazy PLT entry
2340 entry point, that must be within the memory region
2341 assigned to that section. */
2342 lowword = entry->lzplt_entry + 4
2343 + bfinfdpic_plt_section (info)->output_offset
2344 + bfinfdpic_plt_section (info)->output_section->vma;
2345 highword = _bfinfdpic_osec_to_segment
2346 (output_bfd, bfinfdpic_plt_section (info)->output_section);
2347 }
2348 else
2349 {
2350 /* A function descriptor for a local function gets the index
2351 of the section. For a non-local function, it's
2352 disregarded. */
2353 lowword = ad;
6a9adeca
BS
2354 if (sec == NULL
2355 || (entry->symndx == -1 && entry->d.h->dynindx != -1
2356 && entry->d.h->dynindx == idx))
c96a8570
BS
2357 highword = 0;
2358 else
2359 highword = _bfinfdpic_osec_to_segment
2360 (output_bfd, sec->output_section);
48d502e1 2361 }
f4707595 2362
c96a8570
BS
2363 bfd_put_32 (output_bfd, lowword,
2364 bfinfdpic_got_section (info)->contents
2365 + bfinfdpic_got_initial_offset (info)
2366 + entry->fd_entry);
2367 bfd_put_32 (output_bfd, highword,
2368 bfinfdpic_got_section (info)->contents
2369 + bfinfdpic_got_initial_offset (info)
2370 + entry->fd_entry + 4);
2371 }
2372
2373 /* Generate code for the PLT entry. */
2374 if (entry->plt_entry != (bfd_vma) -1)
2375 {
2376 bfd_byte *plt_code = bfinfdpic_plt_section (info)->contents
2377 + entry->plt_entry;
2378
2379 BFD_ASSERT (entry->fd_entry);
2380
2381 /* Figure out what kind of PLT entry we need, depending on the
2382 location of the function descriptor within the GOT. */
2383 if (entry->fd_entry >= -(1 << (18 - 1))
2384 && entry->fd_entry + 4 < (1 << (18 - 1)))
48d502e1 2385 {
c96a8570
BS
2386 /* P1 = [P3 + fd_entry]; P3 = [P3 + fd_entry + 4] */
2387 bfd_put_32 (output_bfd,
2388 0xe519 | ((entry->fd_entry << 14) & 0xFFFF0000),
2389 plt_code);
2390 bfd_put_32 (output_bfd,
2391 0xe51b | (((entry->fd_entry + 4) << 14) & 0xFFFF0000),
2392 plt_code + 4);
2393 plt_code += 8;
2394 }
2395 else
2396 {
2397 /* P1.L = fd_entry; P1.H = fd_entry;
2398 P3 = P3 + P1;
2399 P1 = [P3];
2400 P3 = [P3 + 4]; */
2401 bfd_put_32 (output_bfd,
2402 0xe109 | (entry->fd_entry << 16),
2403 plt_code);
2404 bfd_put_32 (output_bfd,
2405 0xe149 | (entry->fd_entry & 0xFFFF0000),
2406 plt_code + 4);
2407 bfd_put_16 (output_bfd, 0x5ad9, plt_code + 8);
2408 bfd_put_16 (output_bfd, 0x9159, plt_code + 10);
2409 bfd_put_16 (output_bfd, 0xac5b, plt_code + 12);
2410 plt_code += 14;
2411 }
2412 /* JUMP (P1) */
2413 bfd_put_16 (output_bfd, 0x0051, plt_code);
2414 }
f4707595 2415
c96a8570
BS
2416 /* Generate code for the lazy PLT entry. */
2417 if (entry->lzplt_entry != (bfd_vma) -1)
2418 {
2419 bfd_byte *lzplt_code = bfinfdpic_plt_section (info)->contents
2420 + entry->lzplt_entry;
2421 bfd_vma resolverStub_addr;
0f64bb02 2422
c96a8570
BS
2423 bfd_put_32 (output_bfd, fd_lazy_rel_offset, lzplt_code);
2424 lzplt_code += 4;
0f64bb02 2425
c96a8570
BS
2426 resolverStub_addr = entry->lzplt_entry / BFINFDPIC_LZPLT_BLOCK_SIZE
2427 * BFINFDPIC_LZPLT_BLOCK_SIZE + BFINFDPIC_LZPLT_RESOLV_LOC;
2428 if (resolverStub_addr >= bfinfdpic_plt_initial_offset (info))
2429 resolverStub_addr = bfinfdpic_plt_initial_offset (info) - LZPLT_NORMAL_SIZE - LZPLT_RESOLVER_EXTRA;
0f64bb02 2430
c96a8570 2431 if (entry->lzplt_entry == resolverStub_addr)
0f64bb02 2432 {
c96a8570
BS
2433 /* This is a lazy PLT entry that includes a resolver call.
2434 P2 = [P3];
2435 R3 = [P3 + 4];
2436 JUMP (P2); */
2437 bfd_put_32 (output_bfd,
2438 0xa05b915a,
2439 lzplt_code);
2440 bfd_put_16 (output_bfd, 0x0052, lzplt_code + 4);
2441 }
2442 else
2443 {
2444 /* JUMP.S resolverStub */
2445 bfd_put_16 (output_bfd,
2446 0x2000
2447 | (((resolverStub_addr - entry->lzplt_entry)
2448 / 2) & (((bfd_vma)1 << 12) - 1)),
2449 lzplt_code);
2450 }
2451 }
0f64bb02 2452
c96a8570
BS
2453 return TRUE;
2454}
2455\f
2456/* Relocate an Blackfin ELF section.
48d502e1 2457
c96a8570
BS
2458 The RELOCATE_SECTION function is called by the new ELF backend linker
2459 to handle the relocations for a section.
48d502e1 2460
c96a8570
BS
2461 The relocs are always passed as Rela structures; if the section
2462 actually uses Rel structures, the r_addend field will always be
2463 zero.
48d502e1 2464
c96a8570
BS
2465 This function is responsible for adjusting the section contents as
2466 necessary, and (if using Rela relocs and generating a relocatable
2467 output file) adjusting the reloc addend as necessary.
48d502e1 2468
c96a8570
BS
2469 This function does not have to worry about setting the reloc
2470 address or the reloc symbol index.
48d502e1 2471
c96a8570 2472 LOCAL_SYMS is a pointer to the swapped in local symbols.
48d502e1 2473
c96a8570
BS
2474 LOCAL_SECTIONS is an array giving the section in the input file
2475 corresponding to the st_shndx field of each local symbol.
48d502e1 2476
c96a8570
BS
2477 The global hash table entry for the global symbols can be found
2478 via elf_sym_hashes (input_bfd).
48d502e1 2479
c96a8570
BS
2480 When generating relocatable output, this function must handle
2481 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2482 going to be the section symbol corresponding to the output
2483 section, which means that the addend must be adjusted
2484 accordingly. */
48d502e1
BS
2485
2486static bfd_boolean
c96a8570
BS
2487bfinfdpic_relocate_section (bfd * output_bfd,
2488 struct bfd_link_info *info,
2489 bfd * input_bfd,
2490 asection * input_section,
2491 bfd_byte * contents,
2492 Elf_Internal_Rela * relocs,
2493 Elf_Internal_Sym * local_syms,
2494 asection ** local_sections)
48d502e1 2495{
48d502e1
BS
2496 Elf_Internal_Shdr *symtab_hdr;
2497 struct elf_link_hash_entry **sym_hashes;
48d502e1
BS
2498 Elf_Internal_Rela *rel;
2499 Elf_Internal_Rela *relend;
c96a8570
BS
2500 unsigned isec_segment, got_segment, plt_segment,
2501 check_segment[2];
0e1862bb 2502 int silence_segment_error = !bfd_link_pic (info);
48d502e1 2503
c96a8570 2504 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
48d502e1 2505 sym_hashes = elf_sym_hashes (input_bfd);
c96a8570 2506 relend = relocs + input_section->reloc_count;
48d502e1 2507
c96a8570
BS
2508 isec_segment = _bfinfdpic_osec_to_segment (output_bfd,
2509 input_section->output_section);
2510 if (IS_FDPIC (output_bfd) && bfinfdpic_got_section (info))
2511 got_segment = _bfinfdpic_osec_to_segment (output_bfd,
2512 bfinfdpic_got_section (info)
2513 ->output_section);
2514 else
2515 got_segment = -1;
2516 if (IS_FDPIC (output_bfd) && elf_hash_table (info)->dynamic_sections_created)
2517 plt_segment = _bfinfdpic_osec_to_segment (output_bfd,
2518 bfinfdpic_plt_section (info)
2519 ->output_section);
2520 else
2521 plt_segment = -1;
48d502e1 2522
c96a8570 2523 for (rel = relocs; rel < relend; rel ++)
48d502e1 2524 {
48d502e1
BS
2525 reloc_howto_type *howto;
2526 unsigned long r_symndx;
48d502e1
BS
2527 Elf_Internal_Sym *sym;
2528 asection *sec;
c96a8570
BS
2529 struct elf_link_hash_entry *h;
2530 bfd_vma relocation;
48d502e1 2531 bfd_reloc_status_type r;
c96a8570
BS
2532 const char * name = NULL;
2533 int r_type;
2534 asection *osec;
2535 struct bfinfdpic_relocs_info *picrel;
2536 bfd_vma orig_addend = rel->r_addend;
48d502e1
BS
2537
2538 r_type = ELF32_R_TYPE (rel->r_info);
48d502e1 2539
c96a8570
BS
2540 if (r_type == R_BFIN_GNU_VTINHERIT
2541 || r_type == R_BFIN_GNU_VTENTRY)
48d502e1
BS
2542 continue;
2543
c96a8570 2544 r_symndx = ELF32_R_SYM (rel->r_info);
48d502e1
BS
2545 howto = bfin_reloc_type_lookup (input_bfd, r_type);
2546 if (howto == NULL)
2547 {
2548 bfd_set_error (bfd_error_bad_value);
2549 return FALSE;
2550 }
48d502e1 2551
c96a8570
BS
2552 h = NULL;
2553 sym = NULL;
2554 sec = NULL;
8a4ba3a1 2555 picrel = NULL;
c96a8570
BS
2556
2557 if (r_symndx < symtab_hdr->sh_info)
2558 {
2559 sym = local_syms + r_symndx;
2560 osec = sec = local_sections [r_symndx];
2561 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2562
2563 name = bfd_elf_string_from_elf_section
2564 (input_bfd, symtab_hdr->sh_link, sym->st_name);
fd361982 2565 name = name == NULL ? bfd_section_name (sec) : name;
c96a8570
BS
2566 }
2567 else
2568 {
62d887d4 2569 bfd_boolean warned, ignored;
c96a8570
BS
2570 bfd_boolean unresolved_reloc;
2571
2572 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2573 r_symndx, symtab_hdr, sym_hashes,
2574 h, sec, relocation,
62d887d4 2575 unresolved_reloc, warned, ignored);
c96a8570
BS
2576 osec = sec;
2577 }
2578
dbaa2011 2579 if (sec != NULL && discarded_section (sec))
e4067dbb 2580 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2581 rel, 1, relend, howto, 0, contents);
c96a8570 2582
0e1862bb 2583 if (bfd_link_relocatable (info))
c96a8570
BS
2584 continue;
2585
2586 if (h != NULL
2587 && (h->root.type == bfd_link_hash_defined
2588 || h->root.type == bfd_link_hash_defweak)
2589 && !BFINFDPIC_SYM_LOCAL (info, h))
2590 {
2591 osec = sec = NULL;
2592 relocation = 0;
2593 }
2594
2595 switch (r_type)
2596 {
cb88ce9f
BS
2597 case R_BFIN_PCREL24:
2598 case R_BFIN_PCREL24_JUMP_L:
2599 case R_BFIN_BYTE4_DATA:
c96a8570
BS
2600 if (! IS_FDPIC (output_bfd))
2601 goto non_fdpic;
1a0670f3 2602 /* Fall through. */
c96a8570
BS
2603
2604 case R_BFIN_GOT17M4:
2605 case R_BFIN_GOTHI:
2606 case R_BFIN_GOTLO:
2607 case R_BFIN_FUNCDESC_GOT17M4:
2608 case R_BFIN_FUNCDESC_GOTHI:
2609 case R_BFIN_FUNCDESC_GOTLO:
2610 case R_BFIN_GOTOFF17M4:
2611 case R_BFIN_GOTOFFHI:
2612 case R_BFIN_GOTOFFLO:
2613 case R_BFIN_FUNCDESC_GOTOFF17M4:
2614 case R_BFIN_FUNCDESC_GOTOFFHI:
2615 case R_BFIN_FUNCDESC_GOTOFFLO:
2616 case R_BFIN_FUNCDESC:
2617 case R_BFIN_FUNCDESC_VALUE:
981f1518
L
2618 if ((input_section->flags & SEC_ALLOC) == 0)
2619 break;
2620
c96a8570
BS
2621 if (h != NULL)
2622 picrel = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info
2623 (info), input_bfd, h,
2624 orig_addend, INSERT);
2625 else
2626 /* In order to find the entry we created before, we must
2627 use the original addend, not the one that may have been
2628 modified by _bfd_elf_rela_local_sym(). */
2629 picrel = bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info
2630 (info), input_bfd, r_symndx,
2631 orig_addend, INSERT);
2632 if (! picrel)
2633 return FALSE;
2634
2635 if (!_bfinfdpic_emit_got_relocs_plt_entries (picrel, output_bfd, info,
2636 osec, sym,
2637 rel->r_addend))
2638 {
4eca0228 2639 _bfd_error_handler
695344c0 2640 /* xgettext:c-format */
2dcf00ce
AM
2641 (_("%pB: relocation at `%pA+%#" PRIx64 "' "
2642 "references symbol `%s' with nonzero addend"),
2643 input_bfd, input_section, (uint64_t) rel->r_offset, name);
c96a8570
BS
2644 return FALSE;
2645
2646 }
48d502e1 2647
c96a8570 2648 break;
ab96bf03 2649
c96a8570
BS
2650 default:
2651 non_fdpic:
2652 picrel = NULL;
1d5316ab
AM
2653 if (h && ! BFINFDPIC_SYM_LOCAL (info, h)
2654 && _bfd_elf_section_offset (output_bfd, info, input_section,
2655 rel->r_offset) != (bfd_vma) -1)
c96a8570
BS
2656 {
2657 info->callbacks->warning
2658 (info, _("relocation references symbol not defined in the module"),
2659 name, input_bfd, input_section, rel->r_offset);
2660 return FALSE;
2661 }
2662 break;
48d502e1
BS
2663 }
2664
c96a8570 2665 switch (r_type)
ab96bf03 2666 {
cb88ce9f
BS
2667 case R_BFIN_PCREL24:
2668 case R_BFIN_PCREL24_JUMP_L:
c96a8570
BS
2669 check_segment[0] = isec_segment;
2670 if (! IS_FDPIC (output_bfd))
2671 check_segment[1] = isec_segment;
2672 else if (picrel->plt)
2673 {
2674 relocation = bfinfdpic_plt_section (info)->output_section->vma
2675 + bfinfdpic_plt_section (info)->output_offset
2676 + picrel->plt_entry;
2677 check_segment[1] = plt_segment;
2678 }
2679 /* We don't want to warn on calls to undefined weak symbols,
2680 as calls to them must be protected by non-NULL tests
2681 anyway, and unprotected calls would invoke undefined
2682 behavior. */
2683 else if (picrel->symndx == -1
2684 && picrel->d.h->root.type == bfd_link_hash_undefweak)
2685 check_segment[1] = check_segment[0];
2686 else
2687 check_segment[1] = sec
2688 ? _bfinfdpic_osec_to_segment (output_bfd, sec->output_section)
2689 : (unsigned)-1;
2690 break;
ab96bf03 2691
c96a8570
BS
2692 case R_BFIN_GOT17M4:
2693 case R_BFIN_GOTHI:
2694 case R_BFIN_GOTLO:
2695 relocation = picrel->got_entry;
2696 check_segment[0] = check_segment[1] = got_segment;
2697 break;
ab96bf03 2698
c96a8570
BS
2699 case R_BFIN_FUNCDESC_GOT17M4:
2700 case R_BFIN_FUNCDESC_GOTHI:
2701 case R_BFIN_FUNCDESC_GOTLO:
2702 relocation = picrel->fdgot_entry;
2703 check_segment[0] = check_segment[1] = got_segment;
2704 break;
48d502e1 2705
c96a8570
BS
2706 case R_BFIN_GOTOFFHI:
2707 case R_BFIN_GOTOFF17M4:
2708 case R_BFIN_GOTOFFLO:
2709 relocation -= bfinfdpic_got_section (info)->output_section->vma
2710 + bfinfdpic_got_section (info)->output_offset
2711 + bfinfdpic_got_initial_offset (info);
2712 check_segment[0] = got_segment;
2713 check_segment[1] = sec
2714 ? _bfinfdpic_osec_to_segment (output_bfd, sec->output_section)
2715 : (unsigned)-1;
2716 break;
48d502e1 2717
c96a8570
BS
2718 case R_BFIN_FUNCDESC_GOTOFF17M4:
2719 case R_BFIN_FUNCDESC_GOTOFFHI:
2720 case R_BFIN_FUNCDESC_GOTOFFLO:
2721 relocation = picrel->fd_entry;
2722 check_segment[0] = check_segment[1] = got_segment;
2723 break;
48d502e1 2724
c96a8570 2725 case R_BFIN_FUNCDESC:
48d502e1 2726 {
c96a8570
BS
2727 int dynindx;
2728 bfd_vma addend = rel->r_addend;
48d502e1 2729
c96a8570
BS
2730 if (! (h && h->root.type == bfd_link_hash_undefweak
2731 && BFINFDPIC_SYM_LOCAL (info, h)))
2732 {
2733 /* If the symbol is dynamic and there may be dynamic
2734 symbol resolution because we are or are linked with a
2735 shared library, emit a FUNCDESC relocation such that
2736 the dynamic linker will allocate the function
2737 descriptor. If the symbol needs a non-local function
2738 descriptor but binds locally (e.g., its visibility is
2739 protected, emit a dynamic relocation decayed to
2740 section+offset. */
2741 if (h && ! BFINFDPIC_FUNCDESC_LOCAL (info, h)
2742 && BFINFDPIC_SYM_LOCAL (info, h)
3cbc1e5e 2743 && !bfd_link_pde (info))
c96a8570
BS
2744 {
2745 dynindx = elf_section_data (h->root.u.def.section
2746 ->output_section)->dynindx;
2747 addend += h->root.u.def.section->output_offset
2748 + h->root.u.def.value;
2749 }
2750 else if (h && ! BFINFDPIC_FUNCDESC_LOCAL (info, h))
2751 {
2752 if (addend)
2753 {
2754 info->callbacks->warning
2755 (info, _("R_BFIN_FUNCDESC references dynamic symbol with nonzero addend"),
2756 name, input_bfd, input_section, rel->r_offset);
2757 return FALSE;
2758 }
2759 dynindx = h->dynindx;
2760 }
2761 else
2762 {
2763 /* Otherwise, we know we have a private function
2764 descriptor, so reference it directly. */
2765 BFD_ASSERT (picrel->privfd);
cb88ce9f 2766 r_type = R_BFIN_BYTE4_DATA;
c96a8570
BS
2767 dynindx = elf_section_data (bfinfdpic_got_section (info)
2768 ->output_section)->dynindx;
2769 addend = bfinfdpic_got_section (info)->output_offset
2770 + bfinfdpic_got_initial_offset (info)
2771 + picrel->fd_entry;
2772 }
2773
2774 /* If there is room for dynamic symbol resolution, emit
2775 the dynamic relocation. However, if we're linking an
2776 executable at a fixed location, we won't have emitted a
2777 dynamic symbol entry for the got section, so idx will
2778 be zero, which means we can and should compute the
2779 address of the private descriptor ourselves. */
3cbc1e5e 2780 if (bfd_link_pde (info)
c96a8570
BS
2781 && (!h || BFINFDPIC_FUNCDESC_LOCAL (info, h)))
2782 {
6a9adeca
BS
2783 bfd_vma offset;
2784
c96a8570 2785 addend += bfinfdpic_got_section (info)->output_section->vma;
fd361982 2786 if ((bfd_section_flags (input_section->output_section)
c96a8570
BS
2787 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
2788 {
2789 if (_bfinfdpic_osec_readonly_p (output_bfd,
2790 input_section
2791 ->output_section))
2792 {
2793 info->callbacks->warning
2794 (info,
2795 _("cannot emit fixups in read-only section"),
2796 name, input_bfd, input_section, rel->r_offset);
2797 return FALSE;
2798 }
6a9adeca
BS
2799
2800 offset = _bfd_elf_section_offset
2801 (output_bfd, info,
2802 input_section, rel->r_offset);
2803
2804 if (offset != (bfd_vma)-1)
2805 _bfinfdpic_add_rofixup (output_bfd,
2806 bfinfdpic_gotfixup_section
2807 (info),
2808 offset + input_section
2809 ->output_section->vma
2810 + input_section->output_offset,
2811 picrel);
c96a8570
BS
2812 }
2813 }
fd361982 2814 else if ((bfd_section_flags (input_section->output_section)
c96a8570
BS
2815 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
2816 {
2817 bfd_vma offset;
2818
2819 if (_bfinfdpic_osec_readonly_p (output_bfd,
2820 input_section
2821 ->output_section))
2822 {
2823 info->callbacks->warning
2824 (info,
2825 _("cannot emit dynamic relocations in read-only section"),
2826 name, input_bfd, input_section, rel->r_offset);
2827 return FALSE;
2828 }
2829 offset = _bfd_elf_section_offset (output_bfd, info,
2830 input_section, rel->r_offset);
6a9adeca
BS
2831
2832 if (offset != (bfd_vma)-1)
c96a8570
BS
2833 _bfinfdpic_add_dyn_reloc (output_bfd,
2834 bfinfdpic_gotrel_section (info),
2835 offset + input_section
2836 ->output_section->vma
2837 + input_section->output_offset,
2838 r_type,
2839 dynindx, addend, picrel);
2840 }
2841 else
2842 addend += bfinfdpic_got_section (info)->output_section->vma;
2843 }
2844
2845 /* We want the addend in-place because dynamic
2846 relocations are REL. Setting relocation to it should
2847 arrange for it to be installed. */
2848 relocation = addend - rel->r_addend;
2849 }
2850 check_segment[0] = check_segment[1] = got_segment;
2851 break;
2852
cb88ce9f 2853 case R_BFIN_BYTE4_DATA:
c96a8570 2854 if (! IS_FDPIC (output_bfd))
7a84e3da 2855 {
c96a8570
BS
2856 check_segment[0] = check_segment[1] = -1;
2857 break;
7a84e3da 2858 }
c96a8570
BS
2859 /* Fall through. */
2860 case R_BFIN_FUNCDESC_VALUE:
2861 {
2862 int dynindx;
2863 bfd_vma addend = rel->r_addend;
2864 bfd_vma offset;
2865 offset = _bfd_elf_section_offset (output_bfd, info,
2866 input_section, rel->r_offset);
7a84e3da 2867
c96a8570
BS
2868 /* If the symbol is dynamic but binds locally, use
2869 section+offset. */
2870 if (h && ! BFINFDPIC_SYM_LOCAL (info, h))
48d502e1 2871 {
c96a8570
BS
2872 if (addend && r_type == R_BFIN_FUNCDESC_VALUE)
2873 {
2874 info->callbacks->warning
2875 (info, _("R_BFIN_FUNCDESC_VALUE references dynamic symbol with nonzero addend"),
2876 name, input_bfd, input_section, rel->r_offset);
2877 return FALSE;
2878 }
2879 dynindx = h->dynindx;
48d502e1 2880 }
c96a8570 2881 else
48d502e1 2882 {
c96a8570
BS
2883 if (h)
2884 addend += h->root.u.def.value;
2885 else
2886 addend += sym->st_value;
2887 if (osec)
2888 addend += osec->output_offset;
2889 if (osec && osec->output_section
2890 && ! bfd_is_abs_section (osec->output_section)
2891 && ! bfd_is_und_section (osec->output_section))
2892 dynindx = elf_section_data (osec->output_section)->dynindx;
2893 else
2894 dynindx = 0;
2895 }
48d502e1 2896
c96a8570
BS
2897 /* If we're linking an executable at a fixed address, we
2898 can omit the dynamic relocation as long as the symbol
2899 is defined in the current link unit (which is implied
2900 by its output section not being NULL). */
3cbc1e5e 2901 if (bfd_link_pde (info)
c96a8570
BS
2902 && (!h || BFINFDPIC_SYM_LOCAL (info, h)))
2903 {
2904 if (osec)
2905 addend += osec->output_section->vma;
2906 if (IS_FDPIC (input_bfd)
fd361982 2907 && (bfd_section_flags (input_section->output_section)
c96a8570 2908 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
48d502e1 2909 {
c96a8570
BS
2910 if (_bfinfdpic_osec_readonly_p (output_bfd,
2911 input_section
2912 ->output_section))
48d502e1 2913 {
c96a8570
BS
2914 info->callbacks->warning
2915 (info,
2916 _("cannot emit fixups in read-only section"),
2917 name, input_bfd, input_section, rel->r_offset);
2918 return FALSE;
2919 }
2920 if (!h || h->root.type != bfd_link_hash_undefweak)
2921 {
6a9adeca 2922 if (offset != (bfd_vma)-1)
c96a8570 2923 {
6a9adeca
BS
2924 _bfinfdpic_add_rofixup (output_bfd,
2925 bfinfdpic_gotfixup_section
2926 (info),
2927 offset + input_section
2928 ->output_section->vma
2929 + input_section->output_offset,
2930 picrel);
2931
2932 if (r_type == R_BFIN_FUNCDESC_VALUE)
c96a8570
BS
2933 _bfinfdpic_add_rofixup
2934 (output_bfd,
2935 bfinfdpic_gotfixup_section (info),
2936 offset + input_section->output_section->vma
2937 + input_section->output_offset + 4, picrel);
2938 }
48d502e1
BS
2939 }
2940 }
48d502e1
BS
2941 }
2942 else
2943 {
fd361982 2944 if ((bfd_section_flags (input_section->output_section)
c96a8570 2945 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
48d502e1 2946 {
c96a8570
BS
2947 if (_bfinfdpic_osec_readonly_p (output_bfd,
2948 input_section
2949 ->output_section))
48d502e1 2950 {
c96a8570
BS
2951 info->callbacks->warning
2952 (info,
2953 _("cannot emit dynamic relocations in read-only section"),
2954 name, input_bfd, input_section, rel->r_offset);
2955 return FALSE;
48d502e1 2956 }
6a9adeca
BS
2957
2958 if (offset != (bfd_vma)-1)
c96a8570
BS
2959 _bfinfdpic_add_dyn_reloc (output_bfd,
2960 bfinfdpic_gotrel_section (info),
2961 offset
6a9adeca 2962 + input_section->output_section->vma
c96a8570
BS
2963 + input_section->output_offset,
2964 r_type, dynindx, addend, picrel);
48d502e1 2965 }
c96a8570
BS
2966 else if (osec)
2967 addend += osec->output_section->vma;
2968 /* We want the addend in-place because dynamic
2969 relocations are REL. Setting relocation to it
2970 should arrange for it to be installed. */
2971 relocation = addend - rel->r_addend;
2972 }
2973
6a9adeca 2974 if (r_type == R_BFIN_FUNCDESC_VALUE)
c96a8570
BS
2975 {
2976 /* If we've omitted the dynamic relocation, just emit
2977 the fixed addresses of the symbol and of the local
2978 GOT base offset. */
3cbc1e5e 2979 if (bfd_link_pde (info)
c96a8570
BS
2980 && (!h || BFINFDPIC_SYM_LOCAL (info, h)))
2981 bfd_put_32 (output_bfd,
2982 bfinfdpic_got_section (info)->output_section->vma
2983 + bfinfdpic_got_section (info)->output_offset
2984 + bfinfdpic_got_initial_offset (info),
2985 contents + rel->r_offset + 4);
2986 else
2987 /* A function descriptor used for lazy or local
2988 resolving is initialized such that its high word
2989 contains the output section index in which the
2990 PLT entries are located, and the low word
2991 contains the offset of the lazy PLT entry entry
2992 point into that section. */
2993 bfd_put_32 (output_bfd,
2994 h && ! BFINFDPIC_SYM_LOCAL (info, h)
2995 ? 0
2996 : _bfinfdpic_osec_to_segment (output_bfd,
2997 sec
2998 ->output_section),
2999 contents + rel->r_offset + 4);
48d502e1 3000 }
c96a8570
BS
3001 }
3002 check_segment[0] = check_segment[1] = got_segment;
3003 break;
3004
3005 default:
3006 check_segment[0] = isec_segment;
3007 check_segment[1] = sec
3008 ? _bfinfdpic_osec_to_segment (output_bfd, sec->output_section)
3009 : (unsigned)-1;
3010 break;
3011 }
3012
3013 if (check_segment[0] != check_segment[1] && IS_FDPIC (output_bfd))
3014 {
3015#if 1 /* If you take this out, remove the #error from fdpic-static-6.d
3016 in the ld testsuite. */
3017 /* This helps catch problems in GCC while we can't do more
3018 than static linking. The idea is to test whether the
3019 input file basename is crt0.o only once. */
3020 if (silence_segment_error == 1)
3021 silence_segment_error =
765cf5f6
AM
3022 (strlen (bfd_get_filename (input_bfd)) == 6
3023 && filename_cmp (bfd_get_filename (input_bfd), "crt0.o") == 0)
3024 || (strlen (bfd_get_filename (input_bfd)) > 6
3025 && filename_cmp (bfd_get_filename (input_bfd)
3026 + strlen (bfd_get_filename (input_bfd)) - 7,
c96a8570
BS
3027 "/crt0.o") == 0)
3028 ? -1 : 0;
3029#endif
3030 if (!silence_segment_error
3031 /* We don't want duplicate errors for undefined
3032 symbols. */
3033 && !(picrel && picrel->symndx == -1
3034 && picrel->d.h->root.type == bfd_link_hash_undefined))
3035 info->callbacks->warning
3036 (info,
0e1862bb 3037 bfd_link_pic (info)
c96a8570
BS
3038 ? _("relocations between different segments are not supported")
3039 : _("warning: relocation references a different segment"),
3040 name, input_bfd, input_section, rel->r_offset);
0e1862bb 3041 if (!silence_segment_error && bfd_link_pic (info))
c96a8570
BS
3042 return FALSE;
3043 elf_elfheader (output_bfd)->e_flags |= EF_BFIN_PIC;
3044 }
3045
3046 switch (r_type)
3047 {
3048 case R_BFIN_GOTOFFHI:
3049 /* We need the addend to be applied before we shift the
3050 value right. */
3051 relocation += rel->r_addend;
3052 /* Fall through. */
3053 case R_BFIN_GOTHI:
3054 case R_BFIN_FUNCDESC_GOTHI:
3055 case R_BFIN_FUNCDESC_GOTOFFHI:
3056 relocation >>= 16;
3057 /* Fall through. */
48d502e1 3058
c96a8570
BS
3059 case R_BFIN_GOTLO:
3060 case R_BFIN_FUNCDESC_GOTLO:
3061 case R_BFIN_GOTOFFLO:
3062 case R_BFIN_FUNCDESC_GOTOFFLO:
3063 relocation &= 0xffff;
3064 break;
48d502e1 3065
48d502e1 3066 default:
48d502e1
BS
3067 break;
3068 }
3069
c96a8570 3070 switch (r_type)
48d502e1 3071 {
cb88ce9f
BS
3072 case R_BFIN_PCREL24:
3073 case R_BFIN_PCREL24_JUMP_L:
c96a8570
BS
3074 if (! IS_FDPIC (output_bfd) || ! picrel->plt)
3075 break;
3076 /* Fall through. */
3077
3078 /* When referencing a GOT entry, a function descriptor or a
3079 PLT, we don't want the addend to apply to the reference,
3080 but rather to the referenced symbol. The actual entry
3081 will have already been created taking the addend into
3082 account, so cancel it out here. */
3083 case R_BFIN_GOT17M4:
3084 case R_BFIN_GOTHI:
3085 case R_BFIN_GOTLO:
3086 case R_BFIN_FUNCDESC_GOT17M4:
3087 case R_BFIN_FUNCDESC_GOTHI:
3088 case R_BFIN_FUNCDESC_GOTLO:
3089 case R_BFIN_FUNCDESC_GOTOFF17M4:
3090 case R_BFIN_FUNCDESC_GOTOFFHI:
3091 case R_BFIN_FUNCDESC_GOTOFFLO:
3092 /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF17M4
3093 here, since we do want to apply the addend to the others.
3094 Note that we've applied the addend to GOTOFFHI before we
3095 shifted it right. */
3096 case R_BFIN_GOTOFFHI:
3097 relocation -= rel->r_addend;
3098 break;
3099
3100 default:
3101 break;
48d502e1
BS
3102 }
3103
c96a8570
BS
3104 r = bfin_final_link_relocate (rel, howto, input_bfd, input_section,
3105 contents, rel->r_offset,
3106 relocation, rel->r_addend);
3107
48d502e1
BS
3108 if (r != bfd_reloc_ok)
3109 {
c96a8570 3110 const char * msg = (const char *) NULL;
48d502e1 3111
c96a8570 3112 switch (r)
48d502e1 3113 {
c96a8570 3114 case bfd_reloc_overflow:
1a72702b 3115 (*info->callbacks->reloc_overflow)
c96a8570
BS
3116 (info, (h ? &h->root : NULL), name, howto->name,
3117 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3118 break;
0f64bb02 3119
c96a8570 3120 case bfd_reloc_undefined:
1a72702b 3121 (*info->callbacks->undefined_symbol)
c96a8570
BS
3122 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
3123 break;
3124
3125 case bfd_reloc_outofrange:
3126 msg = _("internal error: out of range error");
3127 break;
3128
3129 case bfd_reloc_notsupported:
3130 msg = _("internal error: unsupported relocation error");
3131 break;
3132
3133 case bfd_reloc_dangerous:
3134 msg = _("internal error: dangerous relocation");
3135 break;
3136
3137 default:
3138 msg = _("internal error: unknown error");
3139 break;
48d502e1 3140 }
c96a8570
BS
3141
3142 if (msg)
1a72702b
AM
3143 (*info->callbacks->warning) (info, msg, name, input_bfd,
3144 input_section, rel->r_offset);
48d502e1
BS
3145 }
3146 }
3147
3148 return TRUE;
3149}
3150
48d502e1
BS
3151/* We need dynamic symbols for every section, since segments can
3152 relocate independently. */
3153static bfd_boolean
3154_bfinfdpic_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED,
51408ec2
AM
3155 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3156 asection *p)
48d502e1
BS
3157{
3158 switch (elf_section_data (p)->this_hdr.sh_type)
3159 {
3160 case SHT_PROGBITS:
3161 case SHT_NOBITS:
3162 /* If sh_type is yet undecided, assume it could be
3163 SHT_PROGBITS/SHT_NOBITS. */
3164 case SHT_NULL:
3165 return FALSE;
3166
3167 /* There shouldn't be section relative relocations
3168 against any other section. */
3169 default:
3170 return TRUE;
3171 }
3172}
3173
3174/* Create a .got section, as well as its additional info field. This
3175 is almost entirely copied from
3176 elflink.c:_bfd_elf_create_got_section(). */
3177
3178static bfd_boolean
3179_bfin_create_got_section (bfd *abfd, struct bfd_link_info *info)
3180{
3181 flagword flags, pltflags;
3182 asection *s;
3183 struct elf_link_hash_entry *h;
48d502e1
BS
3184 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3185 int ptralign;
48d502e1
BS
3186
3187 /* This function may be called more than once. */
ce558b89 3188 s = elf_hash_table (info)->sgot;
3d4d4302 3189 if (s != NULL)
48d502e1
BS
3190 return TRUE;
3191
3192 /* Machine specific: although pointers are 32-bits wide, we want the
3193 GOT to be aligned to a 64-bit boundary, such that function
3194 descriptors in it can be accessed with 64-bit loads and
3195 stores. */
3196 ptralign = 3;
3197
3198 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3199 | SEC_LINKER_CREATED);
3200 pltflags = flags;
3201
3d4d4302 3202 s = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
ce558b89 3203 elf_hash_table (info)->sgot = s;
48d502e1 3204 if (s == NULL
fd361982 3205 || !bfd_set_section_alignment (s, ptralign))
48d502e1
BS
3206 return FALSE;
3207
48d502e1
BS
3208 if (bed->want_got_sym)
3209 {
3210 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
3211 (or .got.plt) section. We don't do this in the linker script
3212 because we don't want to define the symbol if we are not creating
3213 a global offset table. */
5592d7ec 3214 h = _bfd_elf_define_linkage_sym (abfd, info, s, "__GLOBAL_OFFSET_TABLE_");
48d502e1
BS
3215 elf_hash_table (info)->hgot = h;
3216 if (h == NULL)
3217 return FALSE;
3218
3219 /* Machine-specific: we want the symbol for executables as
3220 well. */
3221 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3222 return FALSE;
3223 }
3224
3225 /* The first bit of the global offset table is the header. */
3226 s->size += bed->got_header_size;
3227
3228 /* This is the machine-specific part. Create and initialize section
3229 data for the got. */
3230 if (IS_FDPIC (abfd))
3231 {
48d502e1
BS
3232 bfinfdpic_relocs_info (info) = htab_try_create (1,
3233 bfinfdpic_relocs_info_hash,
3234 bfinfdpic_relocs_info_eq,
3235 (htab_del) NULL);
3236 if (! bfinfdpic_relocs_info (info))
3237 return FALSE;
3238
3d4d4302
AM
3239 s = bfd_make_section_anyway_with_flags (abfd, ".rel.got",
3240 (flags | SEC_READONLY));
48d502e1 3241 if (s == NULL
fd361982 3242 || !bfd_set_section_alignment (s, 2))
48d502e1
BS
3243 return FALSE;
3244
3245 bfinfdpic_gotrel_section (info) = s;
3246
3247 /* Machine-specific. */
3d4d4302
AM
3248 s = bfd_make_section_anyway_with_flags (abfd, ".rofixup",
3249 (flags | SEC_READONLY));
48d502e1 3250 if (s == NULL
fd361982 3251 || !bfd_set_section_alignment (s, 2))
48d502e1
BS
3252 return FALSE;
3253
3254 bfinfdpic_gotfixup_section (info) = s;
48d502e1
BS
3255 }
3256
48d502e1
BS
3257 pltflags |= SEC_CODE;
3258 if (bed->plt_not_loaded)
3259 pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS);
3260 if (bed->plt_readonly)
3261 pltflags |= SEC_READONLY;
3262
3d4d4302 3263 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags);
48d502e1 3264 if (s == NULL
fd361982 3265 || !bfd_set_section_alignment (s, bed->plt_alignment))
48d502e1
BS
3266 return FALSE;
3267 /* Blackfin-specific: remember it. */
3268 bfinfdpic_plt_section (info) = s;
3269
3270 if (bed->want_plt_sym)
3271 {
3272 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
3273 .plt section. */
48d502e1
BS
3274 struct bfd_link_hash_entry *bh = NULL;
3275
3276 if (! (_bfd_generic_link_add_one_symbol
5592d7ec 3277 (info, abfd, "__PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, 0, NULL,
48d502e1
BS
3278 FALSE, get_elf_backend_data (abfd)->collect, &bh)))
3279 return FALSE;
3280 h = (struct elf_link_hash_entry *) bh;
3281 h->def_regular = 1;
3282 h->type = STT_OBJECT;
3283
0e1862bb 3284 if (! bfd_link_executable (info)
48d502e1
BS
3285 && ! bfd_elf_link_record_dynamic_symbol (info, h))
3286 return FALSE;
3287 }
3288
3289 /* Blackfin-specific: we want rel relocations for the plt. */
3d4d4302
AM
3290 s = bfd_make_section_anyway_with_flags (abfd, ".rel.plt",
3291 flags | SEC_READONLY);
48d502e1 3292 if (s == NULL
fd361982 3293 || !bfd_set_section_alignment (s, bed->s->log_file_align))
48d502e1
BS
3294 return FALSE;
3295 /* Blackfin-specific: remember it. */
3296 bfinfdpic_pltrel_section (info) = s;
3297
6a9adeca
BS
3298 return TRUE;
3299}
3300
3301/* Make sure the got and plt sections exist, and that our pointers in
3302 the link hash table point to them. */
3303
3304static bfd_boolean
3305elf32_bfinfdpic_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3306{
3307 /* This is mostly copied from
3308 elflink.c:_bfd_elf_create_dynamic_sections(). */
3309 flagword flags;
3310 asection *s;
3311 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3312
3313 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3314 | SEC_LINKER_CREATED);
3315
3316 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
3317 .rel[a].bss sections. */
3318
48d502e1
BS
3319 /* Blackfin-specific: we want to create the GOT in the Blackfin way. */
3320 if (! _bfin_create_got_section (abfd, info))
3321 return FALSE;
3322
3323 /* Blackfin-specific: make sure we created everything we wanted. */
3324 BFD_ASSERT (bfinfdpic_got_section (info) && bfinfdpic_gotrel_section (info)
3325 /* && bfinfdpic_gotfixup_section (info) */
3326 && bfinfdpic_plt_section (info)
3327 && bfinfdpic_pltrel_section (info));
3328
3329 if (bed->want_dynbss)
3330 {
3331 /* The .dynbss section is a place to put symbols which are defined
3332 by dynamic objects, are referenced by regular objects, and are
3333 not functions. We must allocate space for them in the process
3334 image and use a R_*_COPY reloc to tell the dynamic linker to
3335 initialize them at run time. The linker script puts the .dynbss
3336 section into the .bss section of the final image. */
3d4d4302
AM
3337 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
3338 SEC_ALLOC | SEC_LINKER_CREATED);
117ed4f8 3339 if (s == NULL)
48d502e1
BS
3340 return FALSE;
3341
3342 /* The .rel[a].bss section holds copy relocs. This section is not
3d4d4302
AM
3343 normally needed. We need to create it here, though, so that the
3344 linker will map it to an output section. We can't just create it
3345 only if we need it, because we will not know whether we need it
3346 until we have seen all the input files, and the first time the
3347 main linker code calls BFD after examining all the input files
3348 (size_dynamic_sections) the input sections have already been
3349 mapped to the output sections. If the section turns out not to
3350 be needed, we can discard it later. We will never need this
3351 section when generating a shared object, since they do not use
3352 copy relocs. */
0e1862bb 3353 if (! bfd_link_pic (info))
48d502e1 3354 {
3d4d4302
AM
3355 s = bfd_make_section_anyway_with_flags (abfd,
3356 ".rela.bss",
3357 flags | SEC_READONLY);
48d502e1 3358 if (s == NULL
fd361982 3359 || !bfd_set_section_alignment (s, bed->s->log_file_align))
48d502e1
BS
3360 return FALSE;
3361 }
3362 }
3363
3364 return TRUE;
3365}
3366
48d502e1
BS
3367/* Compute the total GOT size required by each symbol in each range.
3368 Symbols may require up to 4 words in the GOT: an entry pointing to
3369 the symbol, an entry pointing to its function descriptor, and a
3370 private function descriptors taking two words. */
3371
6a9adeca
BS
3372static void
3373_bfinfdpic_count_nontls_entries (struct bfinfdpic_relocs_info *entry,
3374 struct _bfinfdpic_dynamic_got_info *dinfo)
48d502e1 3375{
48d502e1
BS
3376 /* Allocate space for a GOT entry pointing to the symbol. */
3377 if (entry->got17m4)
3378 dinfo->got17m4 += 4;
3379 else if (entry->gothilo)
3380 dinfo->gothilo += 4;
3381 else
3382 entry->relocs32--;
3383 entry->relocs32++;
3384
3385 /* Allocate space for a GOT entry pointing to the function
3386 descriptor. */
3387 if (entry->fdgot17m4)
3388 dinfo->got17m4 += 4;
3389 else if (entry->fdgothilo)
3390 dinfo->gothilo += 4;
3391 else
3392 entry->relocsfd--;
3393 entry->relocsfd++;
3394
3395 /* Decide whether we need a PLT entry, a function descriptor in the
3396 GOT, and a lazy PLT entry for this symbol. */
3397 entry->plt = entry->call
3398 && entry->symndx == -1 && ! BFINFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)
3399 && elf_hash_table (dinfo->info)->dynamic_sections_created;
3400 entry->privfd = entry->plt
3401 || entry->fdgoff17m4 || entry->fdgoffhilo
3402 || ((entry->fd || entry->fdgot17m4 || entry->fdgothilo)
3403 && (entry->symndx != -1
3404 || BFINFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h)));
3405 entry->lazyplt = entry->privfd
3406 && entry->symndx == -1 && ! BFINFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)
3407 && ! (dinfo->info->flags & DF_BIND_NOW)
3408 && elf_hash_table (dinfo->info)->dynamic_sections_created;
3409
3410 /* Allocate space for a function descriptor. */
3411 if (entry->fdgoff17m4)
3412 dinfo->fd17m4 += 8;
3413 else if (entry->privfd && entry->plt)
3414 dinfo->fdplt += 8;
3415 else if (entry->privfd)
3416 dinfo->fdhilo += 8;
3417 else
3418 entry->relocsfdv--;
3419 entry->relocsfdv++;
3420
3421 if (entry->lazyplt)
3422 dinfo->lzplt += LZPLT_NORMAL_SIZE;
6a9adeca
BS
3423}
3424
3425/* Compute the number of dynamic relocations and fixups that a symbol
3426 requires, and add (or subtract) from the grand and per-symbol
3427 totals. */
3428
3429static void
3430_bfinfdpic_count_relocs_fixups (struct bfinfdpic_relocs_info *entry,
3431 struct _bfinfdpic_dynamic_got_info *dinfo,
3432 bfd_boolean subtract)
3433{
3434 bfd_vma relocs = 0, fixups = 0;
48d502e1 3435
3cbc1e5e 3436 if (!bfd_link_pde (dinfo->info))
48d502e1
BS
3437 relocs = entry->relocs32 + entry->relocsfd + entry->relocsfdv;
3438 else
3439 {
3440 if (entry->symndx != -1 || BFINFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))
3441 {
3442 if (entry->symndx != -1
3443 || entry->d.h->root.type != bfd_link_hash_undefweak)
3444 fixups += entry->relocs32 + 2 * entry->relocsfdv;
3445 }
3446 else
3447 relocs += entry->relocs32 + entry->relocsfdv;
3448
3449 if (entry->symndx != -1
3450 || BFINFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h))
3451 {
3452 if (entry->symndx != -1
3453 || entry->d.h->root.type != bfd_link_hash_undefweak)
3454 fixups += entry->relocsfd;
3455 }
3456 else
3457 relocs += entry->relocsfd;
3458 }
3459
6a9adeca
BS
3460 if (subtract)
3461 {
3462 relocs = - relocs;
3463 fixups = - fixups;
3464 }
3465
48d502e1
BS
3466 entry->dynrelocs += relocs;
3467 entry->fixups += fixups;
3468 dinfo->relocs += relocs;
3469 dinfo->fixups += fixups;
6a9adeca
BS
3470}
3471
3472/* Compute the total GOT and PLT size required by each symbol in each range. *
3473 Symbols may require up to 4 words in the GOT: an entry pointing to
3474 the symbol, an entry pointing to its function descriptor, and a
3475 private function descriptors taking two words. */
3476
3477static int
3478_bfinfdpic_count_got_plt_entries (void **entryp, void *dinfo_)
3479{
3480 struct bfinfdpic_relocs_info *entry = *entryp;
3481 struct _bfinfdpic_dynamic_got_info *dinfo = dinfo_;
3482
3483 _bfinfdpic_count_nontls_entries (entry, dinfo);
3484
3485 _bfinfdpic_count_relocs_fixups (entry, dinfo, FALSE);
48d502e1
BS
3486
3487 return 1;
3488}
3489
3490/* This structure is used to assign offsets to got entries, function
3491 descriptors, plt entries and lazy plt entries. */
3492
3493struct _bfinfdpic_dynamic_got_plt_info
3494{
3495 /* Summary information collected with _bfinfdpic_count_got_plt_entries. */
3496 struct _bfinfdpic_dynamic_got_info g;
3497
3498 /* For each addressable range, we record a MAX (positive) and MIN
3499 (negative) value. CUR is used to assign got entries, and it's
3500 incremented from an initial positive value to MAX, then from MIN
3501 to FDCUR (unless FDCUR wraps around first). FDCUR is used to
3502 assign function descriptors, and it's decreased from an initial
3503 non-positive value to MIN, then from MAX down to CUR (unless CUR
3504 wraps around first). All of MIN, MAX, CUR and FDCUR always point
3505 to even words. ODD, if non-zero, indicates an odd word to be
3506 used for the next got entry, otherwise CUR is used and
3507 incremented by a pair of words, wrapping around when it reaches
3508 MAX. FDCUR is decremented (and wrapped) before the next function
3509 descriptor is chosen. FDPLT indicates the number of remaining
3510 slots that can be used for function descriptors used only by PLT
3511 entries. */
3512 struct _bfinfdpic_dynamic_got_alloc_data
3513 {
3514 bfd_signed_vma max, cur, odd, fdcur, min;
3515 bfd_vma fdplt;
3516 } got17m4, gothilo;
3517};
3518
3519/* Determine the positive and negative ranges to be used by each
3520 offset range in the GOT. FDCUR and CUR, that must be aligned to a
3521 double-word boundary, are the minimum (negative) and maximum
3522 (positive) GOT offsets already used by previous ranges, except for
3523 an ODD entry that may have been left behind. GOT and FD indicate
3524 the size of GOT entries and function descriptors that must be
3525 placed within the range from -WRAP to WRAP. If there's room left,
3526 up to FDPLT bytes should be reserved for additional function
3527 descriptors. */
3528
3529inline static bfd_signed_vma
3530_bfinfdpic_compute_got_alloc_data (struct _bfinfdpic_dynamic_got_alloc_data *gad,
3531 bfd_signed_vma fdcur,
3532 bfd_signed_vma odd,
3533 bfd_signed_vma cur,
3534 bfd_vma got,
3535 bfd_vma fd,
3536 bfd_vma fdplt,
3537 bfd_vma wrap)
3538{
3539 bfd_signed_vma wrapmin = -wrap;
3540
3541 /* Start at the given initial points. */
3542 gad->fdcur = fdcur;
3543 gad->cur = cur;
3544
3545 /* If we had an incoming odd word and we have any got entries that
3546 are going to use it, consume it, otherwise leave gad->odd at
3547 zero. We might force gad->odd to zero and return the incoming
3548 odd such that it is used by the next range, but then GOT entries
3549 might appear to be out of order and we wouldn't be able to
3550 shorten the GOT by one word if it turns out to end with an
3551 unpaired GOT entry. */
3552 if (odd && got)
3553 {
3554 gad->odd = odd;
3555 got -= 4;
3556 odd = 0;
3557 }
3558 else
3559 gad->odd = 0;
3560
3561 /* If we're left with an unpaired GOT entry, compute its location
3562 such that we can return it. Otherwise, if got doesn't require an
3563 odd number of words here, either odd was already zero in the
3564 block above, or it was set to zero because got was non-zero, or
3565 got was already zero. In the latter case, we want the value of
3566 odd to carry over to the return statement, so we don't want to
3567 reset odd unless the condition below is true. */
3568 if (got & 4)
3569 {
3570 odd = cur + got;
3571 got += 4;
3572 }
3573
3574 /* Compute the tentative boundaries of this range. */
3575 gad->max = cur + got;
3576 gad->min = fdcur - fd;
3577 gad->fdplt = 0;
3578
3579 /* If function descriptors took too much space, wrap some of them
3580 around. */
3581 if (gad->min < wrapmin)
3582 {
3583 gad->max += wrapmin - gad->min;
3584 gad->min = wrapmin;
3585 }
3586 /* If there is space left and we have function descriptors
3587 referenced in PLT entries that could take advantage of shorter
3588 offsets, place them here. */
3589 else if (fdplt && gad->min > wrapmin)
3590 {
3591 bfd_vma fds;
3592 if ((bfd_vma) (gad->min - wrapmin) < fdplt)
3593 fds = gad->min - wrapmin;
3594 else
3595 fds = fdplt;
3596
3597 fdplt -= fds;
3598 gad->min -= fds;
3599 gad->fdplt += fds;
3600 }
3601
3602 /* If GOT entries took too much space, wrap some of them around.
3603 This may well cause gad->min to become lower than wrapmin. This
3604 will cause a relocation overflow later on, so we don't have to
3605 report it here . */
3606 if ((bfd_vma) gad->max > wrap)
3607 {
3608 gad->min -= gad->max - wrap;
3609 gad->max = wrap;
3610 }
3611 /* If there is more space left, try to place some more function
3612 descriptors for PLT entries. */
3613 else if (fdplt && (bfd_vma) gad->max < wrap)
3614 {
3615 bfd_vma fds;
3616 if ((bfd_vma) (wrap - gad->max) < fdplt)
3617 fds = wrap - gad->max;
3618 else
3619 fds = fdplt;
3620
3621 fdplt -= fds;
3622 gad->max += fds;
3623 gad->fdplt += fds;
3624 }
3625
3626 /* If odd was initially computed as an offset past the wrap point,
3627 wrap it around. */
3628 if (odd > gad->max)
3629 odd = gad->min + odd - gad->max;
3630
3631 /* _bfinfdpic_get_got_entry() below will always wrap gad->cur if needed
3632 before returning, so do it here too. This guarantees that,
3633 should cur and fdcur meet at the wrap point, they'll both be
3634 equal to min. */
3635 if (gad->cur == gad->max)
3636 gad->cur = gad->min;
3637
3638 return odd;
3639}
3640
3641/* Compute the location of the next GOT entry, given the allocation
3642 data for a range. */
3643
3644inline static bfd_signed_vma
3645_bfinfdpic_get_got_entry (struct _bfinfdpic_dynamic_got_alloc_data *gad)
3646{
3647 bfd_signed_vma ret;
3648
3649 if (gad->odd)
3650 {
3651 /* If there was an odd word left behind, use it. */
3652 ret = gad->odd;
3653 gad->odd = 0;
3654 }
3655 else
3656 {
3657 /* Otherwise, use the word pointed to by cur, reserve the next
3658 as an odd word, and skip to the next pair of words, possibly
3659 wrapping around. */
3660 ret = gad->cur;
3661 gad->odd = gad->cur + 4;
3662 gad->cur += 8;
3663 if (gad->cur == gad->max)
3664 gad->cur = gad->min;
3665 }
3666
3667 return ret;
3668}
3669
3670/* Compute the location of the next function descriptor entry in the
3671 GOT, given the allocation data for a range. */
3672
3673inline static bfd_signed_vma
3674_bfinfdpic_get_fd_entry (struct _bfinfdpic_dynamic_got_alloc_data *gad)
3675{
3676 /* If we're at the bottom, wrap around, and only then allocate the
3677 next pair of words. */
3678 if (gad->fdcur == gad->min)
3679 gad->fdcur = gad->max;
3680 return gad->fdcur -= 8;
3681}
3682
3683/* Assign GOT offsets for every GOT entry and function descriptor.
3684 Doing everything in a single pass is tricky. */
3685
3686static int
3687_bfinfdpic_assign_got_entries (void **entryp, void *info_)
3688{
3689 struct bfinfdpic_relocs_info *entry = *entryp;
3690 struct _bfinfdpic_dynamic_got_plt_info *dinfo = info_;
3691
3692 if (entry->got17m4)
3693 entry->got_entry = _bfinfdpic_get_got_entry (&dinfo->got17m4);
3694 else if (entry->gothilo)
3695 entry->got_entry = _bfinfdpic_get_got_entry (&dinfo->gothilo);
3696
3697 if (entry->fdgot17m4)
3698 entry->fdgot_entry = _bfinfdpic_get_got_entry (&dinfo->got17m4);
3699 else if (entry->fdgothilo)
3700 entry->fdgot_entry = _bfinfdpic_get_got_entry (&dinfo->gothilo);
3701
3702 if (entry->fdgoff17m4)
3703 entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->got17m4);
3704 else if (entry->plt && dinfo->got17m4.fdplt)
3705 {
3706 dinfo->got17m4.fdplt -= 8;
3707 entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->got17m4);
3708 }
3709 else if (entry->plt)
3710 {
3711 dinfo->gothilo.fdplt -= 8;
3712 entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->gothilo);
3713 }
3714 else if (entry->privfd)
3715 entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->gothilo);
3716
3717 return 1;
3718}
3719
3720/* Assign GOT offsets to private function descriptors used by PLT
3721 entries (or referenced by 32-bit offsets), as well as PLT entries
3722 and lazy PLT entries. */
3723
3724static int
3725_bfinfdpic_assign_plt_entries (void **entryp, void *info_)
3726{
3727 struct bfinfdpic_relocs_info *entry = *entryp;
3728 struct _bfinfdpic_dynamic_got_plt_info *dinfo = info_;
3729
3730 /* If this symbol requires a local function descriptor, allocate
3731 one. */
3732 if (entry->privfd && entry->fd_entry == 0)
3733 {
3734 if (dinfo->got17m4.fdplt)
3735 {
3736 entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->got17m4);
3737 dinfo->got17m4.fdplt -= 8;
3738 }
3739 else
3740 {
3741 BFD_ASSERT (dinfo->gothilo.fdplt);
3742 entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->gothilo);
3743 dinfo->gothilo.fdplt -= 8;
3744 }
3745 }
3746
3747 if (entry->plt)
3748 {
3749 int size;
3750
3751 /* We use the section's raw size to mark the location of the
3752 next PLT entry. */
3753 entry->plt_entry = bfinfdpic_plt_section (dinfo->g.info)->size;
3754
3755 /* Figure out the length of this PLT entry based on the
3756 addressing mode we need to reach the function descriptor. */
3757 BFD_ASSERT (entry->fd_entry);
3758 if (entry->fd_entry >= -(1 << (18 - 1))
3759 && entry->fd_entry + 4 < (1 << (18 - 1)))
3760 size = 10;
3761 else
3762 size = 16;
3763
3764 bfinfdpic_plt_section (dinfo->g.info)->size += size;
3765 }
3766
3767 if (entry->lazyplt)
3768 {
3769 entry->lzplt_entry = dinfo->g.lzplt;
3770 dinfo->g.lzplt += LZPLT_NORMAL_SIZE;
3771 /* If this entry is the one that gets the resolver stub, account
3772 for the additional instruction. */
3773 if (entry->lzplt_entry % BFINFDPIC_LZPLT_BLOCK_SIZE
3774 == BFINFDPIC_LZPLT_RESOLV_LOC)
3775 dinfo->g.lzplt += LZPLT_RESOLVER_EXTRA;
3776 }
3777
3778 return 1;
3779}
3780
6a9adeca
BS
3781/* Cancel out any effects of calling _bfinfdpic_assign_got_entries and
3782 _bfinfdpic_assign_plt_entries. */
3783
3784static int
3785_bfinfdpic_reset_got_plt_entries (void **entryp, void *ignore ATTRIBUTE_UNUSED)
3786{
3787 struct bfinfdpic_relocs_info *entry = *entryp;
3788
3789 entry->got_entry = 0;
3790 entry->fdgot_entry = 0;
3791 entry->fd_entry = 0;
3792 entry->plt_entry = (bfd_vma)-1;
3793 entry->lzplt_entry = (bfd_vma)-1;
3794
3795 return 1;
3796}
3797
48d502e1
BS
3798/* Follow indirect and warning hash entries so that each got entry
3799 points to the final symbol definition. P must point to a pointer
3800 to the hash table we're traversing. Since this traversal may
3801 modify the hash table, we set this pointer to NULL to indicate
3802 we've made a potentially-destructive change to the hash table, so
3803 the traversal must be restarted. */
3804static int
3805_bfinfdpic_resolve_final_relocs_info (void **entryp, void *p)
3806{
3807 struct bfinfdpic_relocs_info *entry = *entryp;
3808 htab_t *htab = p;
3809
3810 if (entry->symndx == -1)
3811 {
3812 struct elf_link_hash_entry *h = entry->d.h;
3813 struct bfinfdpic_relocs_info *oentry;
3814
3815 while (h->root.type == bfd_link_hash_indirect
3816 || h->root.type == bfd_link_hash_warning)
3817 h = (struct elf_link_hash_entry *)h->root.u.i.link;
3818
3819 if (entry->d.h == h)
3820 return 1;
3821
3822 oentry = bfinfdpic_relocs_info_for_global (*htab, 0, h, entry->addend,
3823 NO_INSERT);
3824
3825 if (oentry)
3826 {
3827 /* Merge the two entries. */
3828 bfinfdpic_pic_merge_early_relocs_info (oentry, entry);
3829 htab_clear_slot (*htab, entryp);
3830 return 1;
3831 }
3832
3833 entry->d.h = h;
3834
3835 /* If we can't find this entry with the new bfd hash, re-insert
3836 it, and get the traversal restarted. */
3837 if (! htab_find (*htab, entry))
3838 {
3839 htab_clear_slot (*htab, entryp);
3840 entryp = htab_find_slot (*htab, entry, INSERT);
3841 if (! *entryp)
3842 *entryp = entry;
3843 /* Abort the traversal, since the whole table may have
3844 moved, and leave it up to the parent to restart the
3845 process. */
3846 *(htab_t *)p = NULL;
3847 return 0;
3848 }
3849 }
3850
3851 return 1;
3852}
3853
6a9adeca
BS
3854/* Compute the total size of the GOT, the PLT, the dynamic relocations
3855 section and the rofixup section. Assign locations for GOT and PLT
3856 entries. */
48d502e1
BS
3857
3858static bfd_boolean
6a9adeca
BS
3859_bfinfdpic_size_got_plt (bfd *output_bfd,
3860 struct _bfinfdpic_dynamic_got_plt_info *gpinfop)
48d502e1 3861{
48d502e1
BS
3862 bfd_signed_vma odd;
3863 bfd_vma limit;
6a9adeca
BS
3864 struct bfd_link_info *info = gpinfop->g.info;
3865 bfd *dynobj = elf_hash_table (info)->dynobj;
48d502e1 3866
6a9adeca
BS
3867 memcpy (bfinfdpic_dynamic_got_plt_info (info), &gpinfop->g,
3868 sizeof (gpinfop->g));
48d502e1
BS
3869
3870 odd = 12;
3871 /* Compute the total size taken by entries in the 18-bit range,
3872 to tell how many PLT function descriptors we can bring into it
3873 without causing it to overflow. */
6a9adeca 3874 limit = odd + gpinfop->g.got17m4 + gpinfop->g.fd17m4;
48d502e1
BS
3875 if (limit < (bfd_vma)1 << 18)
3876 limit = ((bfd_vma)1 << 18) - limit;
3877 else
3878 limit = 0;
6a9adeca
BS
3879 if (gpinfop->g.fdplt < limit)
3880 limit = gpinfop->g.fdplt;
48d502e1
BS
3881
3882 /* Determine the ranges of GOT offsets that we can use for each
3883 range of addressing modes. */
6a9adeca 3884 odd = _bfinfdpic_compute_got_alloc_data (&gpinfop->got17m4,
48d502e1
BS
3885 0,
3886 odd,
3887 16,
6a9adeca
BS
3888 gpinfop->g.got17m4,
3889 gpinfop->g.fd17m4,
48d502e1
BS
3890 limit,
3891 (bfd_vma)1 << (18-1));
6a9adeca
BS
3892 odd = _bfinfdpic_compute_got_alloc_data (&gpinfop->gothilo,
3893 gpinfop->got17m4.min,
48d502e1 3894 odd,
6a9adeca
BS
3895 gpinfop->got17m4.max,
3896 gpinfop->g.gothilo,
3897 gpinfop->g.fdhilo,
3898 gpinfop->g.fdplt - gpinfop->got17m4.fdplt,
48d502e1
BS
3899 (bfd_vma)1 << (32-1));
3900
3901 /* Now assign (most) GOT offsets. */
3902 htab_traverse (bfinfdpic_relocs_info (info), _bfinfdpic_assign_got_entries,
6a9adeca 3903 gpinfop);
48d502e1 3904
6a9adeca
BS
3905 bfinfdpic_got_section (info)->size = gpinfop->gothilo.max
3906 - gpinfop->gothilo.min
48d502e1
BS
3907 /* If an odd word is the last word of the GOT, we don't need this
3908 word to be part of the GOT. */
6a9adeca 3909 - (odd + 4 == gpinfop->gothilo.max ? 4 : 0);
48d502e1
BS
3910 if (bfinfdpic_got_section (info)->size == 0)
3911 bfinfdpic_got_section (info)->flags |= SEC_EXCLUDE;
3912 else if (bfinfdpic_got_section (info)->size == 12
3913 && ! elf_hash_table (info)->dynamic_sections_created)
3914 {
3915 bfinfdpic_got_section (info)->flags |= SEC_EXCLUDE;
3916 bfinfdpic_got_section (info)->size = 0;
3917 }
3918 else
3919 {
3920 bfinfdpic_got_section (info)->contents =
3921 (bfd_byte *) bfd_zalloc (dynobj,
3922 bfinfdpic_got_section (info)->size);
3923 if (bfinfdpic_got_section (info)->contents == NULL)
3924 return FALSE;
3925 }
3926
3927 if (elf_hash_table (info)->dynamic_sections_created)
3928 /* Subtract the number of lzplt entries, since those will generate
3929 relocations in the pltrel section. */
3930 bfinfdpic_gotrel_section (info)->size =
6a9adeca 3931 (gpinfop->g.relocs - gpinfop->g.lzplt / LZPLT_NORMAL_SIZE)
48d502e1
BS
3932 * get_elf_backend_data (output_bfd)->s->sizeof_rel;
3933 else
6a9adeca 3934 BFD_ASSERT (gpinfop->g.relocs == 0);
48d502e1
BS
3935 if (bfinfdpic_gotrel_section (info)->size == 0)
3936 bfinfdpic_gotrel_section (info)->flags |= SEC_EXCLUDE;
3937 else
3938 {
3939 bfinfdpic_gotrel_section (info)->contents =
3940 (bfd_byte *) bfd_zalloc (dynobj,
3941 bfinfdpic_gotrel_section (info)->size);
3942 if (bfinfdpic_gotrel_section (info)->contents == NULL)
3943 return FALSE;
3944 }
3945
6a9adeca 3946 bfinfdpic_gotfixup_section (info)->size = (gpinfop->g.fixups + 1) * 4;
48d502e1
BS
3947 if (bfinfdpic_gotfixup_section (info)->size == 0)
3948 bfinfdpic_gotfixup_section (info)->flags |= SEC_EXCLUDE;
3949 else
3950 {
3951 bfinfdpic_gotfixup_section (info)->contents =
3952 (bfd_byte *) bfd_zalloc (dynobj,
3953 bfinfdpic_gotfixup_section (info)->size);
3954 if (bfinfdpic_gotfixup_section (info)->contents == NULL)
3955 return FALSE;
3956 }
3957
3958 if (elf_hash_table (info)->dynamic_sections_created)
d3e32c2e
JZ
3959 bfinfdpic_pltrel_section (info)->size =
3960 gpinfop->g.lzplt / LZPLT_NORMAL_SIZE * get_elf_backend_data (output_bfd)->s->sizeof_rel;
3961 if (bfinfdpic_pltrel_section (info)->size == 0)
3962 bfinfdpic_pltrel_section (info)->flags |= SEC_EXCLUDE;
3963 else
48d502e1 3964 {
d3e32c2e
JZ
3965 bfinfdpic_pltrel_section (info)->contents =
3966 (bfd_byte *) bfd_zalloc (dynobj,
3967 bfinfdpic_pltrel_section (info)->size);
3968 if (bfinfdpic_pltrel_section (info)->contents == NULL)
3969 return FALSE;
48d502e1
BS
3970 }
3971
3972 /* Add 4 bytes for every block of at most 65535 lazy PLT entries,
3973 such that there's room for the additional instruction needed to
3974 call the resolver. Since _bfinfdpic_assign_got_entries didn't
3975 account for them, our block size is 4 bytes smaller than the real
3976 block size. */
3977 if (elf_hash_table (info)->dynamic_sections_created)
3978 {
6a9adeca
BS
3979 bfinfdpic_plt_section (info)->size = gpinfop->g.lzplt
3980 + ((gpinfop->g.lzplt + (BFINFDPIC_LZPLT_BLOCK_SIZE - 4) - LZPLT_NORMAL_SIZE)
48d502e1
BS
3981 / (BFINFDPIC_LZPLT_BLOCK_SIZE - 4) * LZPLT_RESOLVER_EXTRA);
3982 }
3983
3984 /* Reset it, such that _bfinfdpic_assign_plt_entries() can use it to
3985 actually assign lazy PLT entries addresses. */
6a9adeca 3986 gpinfop->g.lzplt = 0;
48d502e1
BS
3987
3988 /* Save information that we're going to need to generate GOT and PLT
3989 entries. */
6a9adeca 3990 bfinfdpic_got_initial_offset (info) = -gpinfop->gothilo.min;
48d502e1
BS
3991
3992 if (get_elf_backend_data (output_bfd)->want_got_sym)
3993 elf_hash_table (info)->hgot->root.u.def.value
6a9adeca 3994 = bfinfdpic_got_initial_offset (info);
48d502e1
BS
3995
3996 if (elf_hash_table (info)->dynamic_sections_created)
3997 bfinfdpic_plt_initial_offset (info) =
3998 bfinfdpic_plt_section (info)->size;
3999
4000 htab_traverse (bfinfdpic_relocs_info (info), _bfinfdpic_assign_plt_entries,
6a9adeca 4001 gpinfop);
48d502e1
BS
4002
4003 /* Allocate the PLT section contents only after
4004 _bfinfdpic_assign_plt_entries has a chance to add the size of the
4005 non-lazy PLT entries. */
d3e32c2e
JZ
4006 if (bfinfdpic_plt_section (info)->size == 0)
4007 bfinfdpic_plt_section (info)->flags |= SEC_EXCLUDE;
4008 else
48d502e1 4009 {
d3e32c2e
JZ
4010 bfinfdpic_plt_section (info)->contents =
4011 (bfd_byte *) bfd_zalloc (dynobj,
4012 bfinfdpic_plt_section (info)->size);
4013 if (bfinfdpic_plt_section (info)->contents == NULL)
4014 return FALSE;
48d502e1
BS
4015 }
4016
6a9adeca
BS
4017 return TRUE;
4018}
4019
4020/* Set the sizes of the dynamic sections. */
4021
4022static bfd_boolean
4023elf32_bfinfdpic_size_dynamic_sections (bfd *output_bfd,
4024 struct bfd_link_info *info)
4025{
4026 struct elf_link_hash_table *htab;
4027 bfd *dynobj;
4028 asection *s;
4029 struct _bfinfdpic_dynamic_got_plt_info gpinfo;
4030
4031 htab = elf_hash_table (info);
4032 dynobj = htab->dynobj;
4033 BFD_ASSERT (dynobj != NULL);
4034
4035 if (htab->dynamic_sections_created)
4036 {
4037 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 4038 if (bfd_link_executable (info) && !info->nointerp)
6a9adeca 4039 {
3d4d4302 4040 s = bfd_get_linker_section (dynobj, ".interp");
6a9adeca
BS
4041 BFD_ASSERT (s != NULL);
4042 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
4043 s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
4044 }
4045 }
4046
4047 memset (&gpinfo, 0, sizeof (gpinfo));
4048 gpinfo.g.info = info;
4049
4050 for (;;)
4051 {
4052 htab_t relocs = bfinfdpic_relocs_info (info);
4053
4054 htab_traverse (relocs, _bfinfdpic_resolve_final_relocs_info, &relocs);
4055
4056 if (relocs == bfinfdpic_relocs_info (info))
4057 break;
4058 }
4059
4060 htab_traverse (bfinfdpic_relocs_info (info), _bfinfdpic_count_got_plt_entries,
4061 &gpinfo.g);
4062
4063 /* Allocate space to save the summary information, we're going to
4064 use it if we're doing relaxations. */
4065 bfinfdpic_dynamic_got_plt_info (info) = bfd_alloc (dynobj, sizeof (gpinfo.g));
4066
4067 if (!_bfinfdpic_size_got_plt (output_bfd, &gpinfo))
4068 return FALSE;
4069
3d4d4302 4070 s = bfd_get_linker_section (dynobj, ".dynbss");
153d38f6
JZ
4071 if (s && s->size == 0)
4072 s->flags |= SEC_EXCLUDE;
4073
3d4d4302 4074 s = bfd_get_linker_section (dynobj, ".rela.bss");
153d38f6
JZ
4075 if (s && s->size == 0)
4076 s->flags |= SEC_EXCLUDE;
4077
3084d7a2 4078 return _bfd_elf_add_dynamic_tags (output_bfd, info, TRUE);
48d502e1
BS
4079}
4080
4081static bfd_boolean
4082elf32_bfinfdpic_always_size_sections (bfd *output_bfd,
4083 struct bfd_link_info *info)
4084{
0e1862bb 4085 if (!bfd_link_relocatable (info)
04c3a755
NS
4086 && !bfd_elf_stack_segment_size (output_bfd, info,
4087 "__stacksize", DEFAULT_STACK_SIZE))
4088 return FALSE;
48d502e1
BS
4089
4090 return TRUE;
4091}
4092
6a9adeca
BS
4093/* Check whether any of the relocations was optimized away, and
4094 subtract it from the relocation or fixup count. */
4095static bfd_boolean
4096_bfinfdpic_check_discarded_relocs (bfd *abfd, asection *sec,
2c3fc389
NC
4097 struct bfd_link_info *info,
4098 bfd_boolean *changed)
6a9adeca
BS
4099{
4100 Elf_Internal_Shdr *symtab_hdr;
4101 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4102 Elf_Internal_Rela *rel, *erel;
4103
4104 if ((sec->flags & SEC_RELOC) == 0
4105 || sec->reloc_count == 0)
4106 return TRUE;
4107
4108 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4109 sym_hashes = elf_sym_hashes (abfd);
4110 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym);
4111 if (!elf_bad_symtab (abfd))
4112 sym_hashes_end -= symtab_hdr->sh_info;
4113
4114 rel = elf_section_data (sec)->relocs;
4115
4116 /* Now examine each relocation. */
4117 for (erel = rel + sec->reloc_count; rel < erel; rel++)
4118 {
4119 struct elf_link_hash_entry *h;
4120 unsigned long r_symndx;
4121 struct bfinfdpic_relocs_info *picrel;
4122 struct _bfinfdpic_dynamic_got_info *dinfo;
4123
4124 if (ELF32_R_TYPE (rel->r_info) != R_BFIN_BYTE4_DATA
4125 && ELF32_R_TYPE (rel->r_info) != R_BFIN_FUNCDESC)
4126 continue;
4127
4128 if (_bfd_elf_section_offset (sec->output_section->owner,
4129 info, sec, rel->r_offset)
4130 != (bfd_vma)-1)
4131 continue;
4132
4133 r_symndx = ELF32_R_SYM (rel->r_info);
4134 if (r_symndx < symtab_hdr->sh_info)
4135 h = NULL;
4136 else
4137 {
4138 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4139 while (h->root.type == bfd_link_hash_indirect
4140 || h->root.type == bfd_link_hash_warning)
4141 h = (struct elf_link_hash_entry *)h->root.u.i.link;
4142 }
4143
4144 if (h != NULL)
4145 picrel = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info),
4146 abfd, h,
4147 rel->r_addend, NO_INSERT);
4148 else
4149 picrel = bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info (info),
4150 abfd, r_symndx,
4151 rel->r_addend, NO_INSERT);
4152
4153 if (! picrel)
4154 return FALSE;
4155
4156 *changed = TRUE;
4157 dinfo = bfinfdpic_dynamic_got_plt_info (info);
4158
4159 _bfinfdpic_count_relocs_fixups (picrel, dinfo, TRUE);
4160 if (ELF32_R_TYPE (rel->r_info) == R_BFIN_BYTE4_DATA)
4161 picrel->relocs32--;
4162 else /* we know (ELF32_R_TYPE (rel->r_info) == R_BFIN_FUNCDESC) */
4163 picrel->relocsfd--;
4164 _bfinfdpic_count_relocs_fixups (picrel, dinfo, FALSE);
4165 }
4166
4167 return TRUE;
4168}
4169
4170static bfd_boolean
4171bfinfdpic_elf_discard_info (bfd *ibfd,
4172 struct elf_reloc_cookie *cookie ATTRIBUTE_UNUSED,
4173 struct bfd_link_info *info)
4174{
4175 bfd_boolean changed = FALSE;
4176 asection *s;
4177 bfd *obfd = NULL;
4178
4179 /* Account for relaxation of .eh_frame section. */
4180 for (s = ibfd->sections; s; s = s->next)
dbaa2011 4181 if (s->sec_info_type == SEC_INFO_TYPE_EH_FRAME)
6a9adeca
BS
4182 {
4183 if (!_bfinfdpic_check_discarded_relocs (ibfd, s, info, &changed))
4184 return FALSE;
4185 obfd = s->output_section->owner;
4186 }
4187
4188 if (changed)
4189 {
4190 struct _bfinfdpic_dynamic_got_plt_info gpinfo;
4191
4192 memset (&gpinfo, 0, sizeof (gpinfo));
4193 memcpy (&gpinfo.g, bfinfdpic_dynamic_got_plt_info (info),
4194 sizeof (gpinfo.g));
4195
4196 /* Clear GOT and PLT assignments. */
4197 htab_traverse (bfinfdpic_relocs_info (info),
4198 _bfinfdpic_reset_got_plt_entries,
4199 NULL);
4200
4201 if (!_bfinfdpic_size_got_plt (obfd, &gpinfo))
4202 return FALSE;
4203 }
4204
4205 return TRUE;
4206}
4207
48d502e1
BS
4208static bfd_boolean
4209elf32_bfinfdpic_finish_dynamic_sections (bfd *output_bfd,
4210 struct bfd_link_info *info)
4211{
4212 bfd *dynobj;
4213 asection *sdyn;
4214
4215 dynobj = elf_hash_table (info)->dynobj;
4216
4217 if (bfinfdpic_got_section (info))
4218 {
4219 BFD_ASSERT (bfinfdpic_gotrel_section (info)->size
ed3056eb
NC
4220 /* PR 17334: It appears that the GOT section can end up
4221 being bigger than the number of relocs. Presumably
4222 because some relocs have been deleted. A test case has
4223 yet to be generated for verify this, but in the meantime
4224 the test below has been changed from == to >= so that
4225 applications can continue to be built. */
4226 >= (bfinfdpic_gotrel_section (info)->reloc_count
48d502e1
BS
4227 * sizeof (Elf32_External_Rel)));
4228
4229 if (bfinfdpic_gotfixup_section (info))
4230 {
4231 struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot;
4232 bfd_vma got_value = hgot->root.u.def.value
4233 + hgot->root.u.def.section->output_section->vma
4234 + hgot->root.u.def.section->output_offset;
4235
4236 _bfinfdpic_add_rofixup (output_bfd, bfinfdpic_gotfixup_section (info),
4237 got_value, 0);
4238
4239 if (bfinfdpic_gotfixup_section (info)->size
4240 != (bfinfdpic_gotfixup_section (info)->reloc_count * 4))
0f64bb02 4241 {
4eca0228 4242 _bfd_error_handler
48d502e1 4243 ("LINKER BUG: .rofixup section size mismatch");
0f64bb02
CM
4244 return FALSE;
4245 }
4246 }
4247 }
48d502e1
BS
4248 if (elf_hash_table (info)->dynamic_sections_created)
4249 {
4250 BFD_ASSERT (bfinfdpic_pltrel_section (info)->size
4251 == (bfinfdpic_pltrel_section (info)->reloc_count
4252 * sizeof (Elf32_External_Rel)));
4253 }
4254
3d4d4302 4255 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
48d502e1
BS
4256
4257 if (elf_hash_table (info)->dynamic_sections_created)
4258 {
4259 Elf32_External_Dyn * dyncon;
4260 Elf32_External_Dyn * dynconend;
4261
4262 BFD_ASSERT (sdyn != NULL);
4263
4264 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4265 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4266
4267 for (; dyncon < dynconend; dyncon++)
4268 {
4269 Elf_Internal_Dyn dyn;
4270
4271 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4272
4273 switch (dyn.d_tag)
4274 {
4275 default:
4276 break;
4277
4278 case DT_PLTGOT:
4279 dyn.d_un.d_ptr = bfinfdpic_got_section (info)->output_section->vma
4280 + bfinfdpic_got_section (info)->output_offset
4281 + bfinfdpic_got_initial_offset (info);
4282 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4283 break;
4284
4285 case DT_JMPREL:
4286 dyn.d_un.d_ptr = bfinfdpic_pltrel_section (info)
4287 ->output_section->vma
4288 + bfinfdpic_pltrel_section (info)->output_offset;
4289 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4290 break;
4291
4292 case DT_PLTRELSZ:
4293 dyn.d_un.d_val = bfinfdpic_pltrel_section (info)->size;
4294 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4295 break;
4296 }
4297 }
4298 }
4299
4300 return TRUE;
4301}
4302
4303/* Adjust a symbol defined by a dynamic object and referenced by a
4304 regular object. */
4305
4306static bfd_boolean
2c3fc389
NC
4307elf32_bfinfdpic_adjust_dynamic_symbol (struct bfd_link_info *info,
4308 struct elf_link_hash_entry *h)
48d502e1
BS
4309{
4310 bfd * dynobj;
4311
4312 dynobj = elf_hash_table (info)->dynobj;
4313
4314 /* Make sure we know what is going on here. */
4315 BFD_ASSERT (dynobj != NULL
60d67dc8 4316 && (h->is_weakalias
48d502e1
BS
4317 || (h->def_dynamic
4318 && h->ref_regular
4319 && !h->def_regular)));
4320
4321 /* If this is a weak symbol, and there is a real definition, the
4322 processor independent code will have arranged for us to see the
4323 real definition first, and we can just use the same value. */
60d67dc8 4324 if (h->is_weakalias)
48d502e1 4325 {
60d67dc8
AM
4326 struct elf_link_hash_entry *def = weakdef (h);
4327 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
4328 h->root.u.def.section = def->root.u.def.section;
4329 h->root.u.def.value = def->root.u.def.value;
48d502e1 4330 }
0f64bb02
CM
4331
4332 return TRUE;
4333}
4334
48d502e1
BS
4335/* Perform any actions needed for dynamic symbols. */
4336
4337static bfd_boolean
4338elf32_bfinfdpic_finish_dynamic_symbol
4339(bfd *output_bfd ATTRIBUTE_UNUSED,
4340 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4341 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED,
4342 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
0f64bb02 4343{
48d502e1
BS
4344 return TRUE;
4345}
0f64bb02 4346
48d502e1
BS
4347/* Decide whether to attempt to turn absptr or lsda encodings in
4348 shared libraries into pcrel within the given input section. */
0f64bb02 4349
48d502e1
BS
4350static bfd_boolean
4351bfinfdpic_elf_use_relative_eh_frame
4352(bfd *input_bfd ATTRIBUTE_UNUSED,
4353 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4354 asection *eh_frame_section ATTRIBUTE_UNUSED)
4355{
4356 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
4357 return FALSE;
4358}
0f64bb02 4359
48d502e1 4360/* Adjust the contents of an eh_frame_hdr section before they're output. */
0f64bb02 4361
48d502e1
BS
4362static bfd_byte
4363bfinfdpic_elf_encode_eh_address (bfd *abfd,
4364 struct bfd_link_info *info,
4365 asection *osec, bfd_vma offset,
4366 asection *loc_sec, bfd_vma loc_offset,
4367 bfd_vma *encoded)
4368{
4369 struct elf_link_hash_entry *h;
0f64bb02 4370
48d502e1
BS
4371 h = elf_hash_table (info)->hgot;
4372 BFD_ASSERT (h && h->root.type == bfd_link_hash_defined);
4373
4374 if (! h || (_bfinfdpic_osec_to_segment (abfd, osec)
4375 == _bfinfdpic_osec_to_segment (abfd, loc_sec->output_section)))
4376 return _bfd_elf_encode_eh_address (abfd, info, osec, offset,
4377 loc_sec, loc_offset, encoded);
4378
4379 BFD_ASSERT (_bfinfdpic_osec_to_segment (abfd, osec)
4380 == (_bfinfdpic_osec_to_segment
4381 (abfd, h->root.u.def.section->output_section)));
4382
4383 *encoded = osec->vma + offset
4384 - (h->root.u.def.value
4385 + h->root.u.def.section->output_section->vma
4386 + h->root.u.def.section->output_offset);
4387
4388 return DW_EH_PE_datarel | DW_EH_PE_sdata4;
0f64bb02
CM
4389}
4390
4391
48d502e1
BS
4392
4393/* Look through the relocs for a section during the first phase.
4394
4395 Besides handling virtual table relocs for gc, we have to deal with
4396 all sorts of PIC-related relocations. We describe below the
4397 general plan on how to handle such relocations, even though we only
4398 collect information at this point, storing them in hash tables for
4399 perusal of later passes.
4400
4401 32 relocations are propagated to the linker output when creating
4402 position-independent output. LO16 and HI16 relocations are not
4403 supposed to be encountered in this case.
4404
4405 LABEL16 should always be resolvable by the linker, since it's only
4406 used by branches.
4407
4408 LABEL24, on the other hand, is used by calls. If it turns out that
4409 the target of a call is a dynamic symbol, a PLT entry must be
4410 created for it, which triggers the creation of a private function
4411 descriptor and, unless lazy binding is disabled, a lazy PLT entry.
4412
4413 GPREL relocations require the referenced symbol to be in the same
4414 segment as _gp, but this can only be checked later.
4415
4416 All GOT, GOTOFF and FUNCDESC relocations require a .got section to
4417 exist. LABEL24 might as well, since it may require a PLT entry,
4418 that will require a got.
4419
4420 Non-FUNCDESC GOT relocations require a GOT entry to be created
4421 regardless of whether the symbol is dynamic. However, since a
4422 global symbol that turns out to not be exported may have the same
4423 address of a non-dynamic symbol, we don't assign GOT entries at
4424 this point, such that we can share them in this case. A relocation
4425 for the GOT entry always has to be created, be it to offset a
4426 private symbol by the section load address, be it to get the symbol
4427 resolved dynamically.
4428
4429 FUNCDESC GOT relocations require a GOT entry to be created, and
4430 handled as if a FUNCDESC relocation was applied to the GOT entry in
4431 an object file.
4432
4433 FUNCDESC relocations referencing a symbol that turns out to NOT be
4434 dynamic cause a private function descriptor to be created. The
4435 FUNCDESC relocation then decays to a 32 relocation that points at
4436 the private descriptor. If the symbol is dynamic, the FUNCDESC
4437 relocation is propagated to the linker output, such that the
4438 dynamic linker creates the canonical descriptor, pointing to the
4439 dynamically-resolved definition of the function.
4440
4441 Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic
4442 symbols that are assigned to the same segment as the GOT, but we
4443 can only check this later, after we know the complete set of
4444 symbols defined and/or exported.
4445
4446 FUNCDESC GOTOFF relocations require a function descriptor to be
4447 created and, unless lazy binding is disabled or the symbol is not
4448 dynamic, a lazy PLT entry. Since we can't tell at this point
4449 whether a symbol is going to be dynamic, we have to decide later
4450 whether to create a lazy PLT entry or bind the descriptor directly
4451 to the private function.
4452
4453 FUNCDESC_VALUE relocations are not supposed to be present in object
4454 files, but they may very well be simply propagated to the linker
4455 output, since they have no side effect.
4456
4457
4458 A function descriptor always requires a FUNCDESC_VALUE relocation.
4459 Whether it's in .plt.rel or not depends on whether lazy binding is
4460 enabled and on whether the referenced symbol is dynamic.
4461
4462 The existence of a lazy PLT requires the resolverStub lazy PLT
4463 entry to be present.
4464
4465
4466 As for assignment of GOT, PLT and lazy PLT entries, and private
4467 descriptors, we might do them all sequentially, but we can do
4468 better than that. For example, we can place GOT entries and
4469 private function descriptors referenced using 12-bit operands
4470 closer to the PIC register value, such that these relocations don't
4471 overflow. Those that are only referenced with LO16 relocations
4472 could come next, but we may as well place PLT-required function
4473 descriptors in the 12-bit range to make them shorter. Symbols
4474 referenced with LO16/HI16 may come next, but we may place
4475 additional function descriptors in the 16-bit range if we can
4476 reliably tell that we've already placed entries that are ever
4477 referenced with only LO16. PLT entries are therefore generated as
4478 small as possible, while not introducing relocation overflows in
4479 GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be
4480 generated before or after PLT entries, but not intermingled with
4481 them, such that we can have more lazy PLT entries in range for a
4482 branch to the resolverStub. The resolverStub should be emitted at
4483 the most distant location from the first lazy PLT entry such that
4484 it's still in range for a branch, or closer, if there isn't a need
4485 for so many lazy PLT entries. Additional lazy PLT entries may be
4486 emitted after the resolverStub, as long as branches are still in
4487 range. If the branch goes out of range, longer lazy PLT entries
4488 are emitted.
4489
4490 We could further optimize PLT and lazy PLT entries by giving them
4491 priority in assignment to closer-to-gr17 locations depending on the
4492 number of occurrences of references to them (assuming a function
4493 that's called more often is more important for performance, so its
4494 PLT entry should be faster), or taking hints from the compiler.
4495 Given infinite time and money... :-) */
0f64bb02
CM
4496
4497static bfd_boolean
48d502e1
BS
4498bfinfdpic_check_relocs (bfd *abfd, struct bfd_link_info *info,
4499 asection *sec, const Elf_Internal_Rela *relocs)
0f64bb02
CM
4500{
4501 Elf_Internal_Shdr *symtab_hdr;
5582a088 4502 struct elf_link_hash_entry **sym_hashes;
48d502e1
BS
4503 const Elf_Internal_Rela *rel;
4504 const Elf_Internal_Rela *rel_end;
0f64bb02 4505 bfd *dynobj;
48d502e1 4506 struct bfinfdpic_relocs_info *picrel;
0f64bb02 4507
0e1862bb 4508 if (bfd_link_relocatable (info))
0f64bb02
CM
4509 return TRUE;
4510
4511 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4512 sym_hashes = elf_sym_hashes (abfd);
0f64bb02 4513
48d502e1
BS
4514 dynobj = elf_hash_table (info)->dynobj;
4515 rel_end = relocs + sec->reloc_count;
4516 for (rel = relocs; rel < rel_end; rel++)
0f64bb02 4517 {
0f64bb02 4518 struct elf_link_hash_entry *h;
48d502e1
BS
4519 unsigned long r_symndx;
4520
4521 r_symndx = ELF32_R_SYM (rel->r_info);
4522 if (r_symndx < symtab_hdr->sh_info)
07d6d2b8 4523 h = NULL;
48d502e1 4524 else
07d6d2b8 4525 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
0f64bb02
CM
4526
4527 switch (ELF32_R_TYPE (rel->r_info))
4528 {
48d502e1
BS
4529 case R_BFIN_GOT17M4:
4530 case R_BFIN_GOTHI:
4531 case R_BFIN_GOTLO:
4532 case R_BFIN_FUNCDESC_GOT17M4:
4533 case R_BFIN_FUNCDESC_GOTHI:
4534 case R_BFIN_FUNCDESC_GOTLO:
4535 case R_BFIN_GOTOFF17M4:
4536 case R_BFIN_GOTOFFHI:
4537 case R_BFIN_GOTOFFLO:
4538 case R_BFIN_FUNCDESC_GOTOFF17M4:
4539 case R_BFIN_FUNCDESC_GOTOFFHI:
4540 case R_BFIN_FUNCDESC_GOTOFFLO:
4541 case R_BFIN_FUNCDESC:
4542 case R_BFIN_FUNCDESC_VALUE:
4543 if (! IS_FDPIC (abfd))
4544 goto bad_reloc;
4545 /* Fall through. */
cb88ce9f
BS
4546 case R_BFIN_PCREL24:
4547 case R_BFIN_PCREL24_JUMP_L:
4548 case R_BFIN_BYTE4_DATA:
48d502e1 4549 if (IS_FDPIC (abfd) && ! dynobj)
0f64bb02 4550 {
48d502e1
BS
4551 elf_hash_table (info)->dynobj = dynobj = abfd;
4552 if (! _bfin_create_got_section (abfd, info))
4553 return FALSE;
0f64bb02 4554 }
48d502e1 4555 if (! IS_FDPIC (abfd))
0f64bb02 4556 {
48d502e1
BS
4557 picrel = NULL;
4558 break;
4559 }
4560 if (h != NULL)
4561 {
4562 if (h->dynindx == -1)
4563 switch (ELF_ST_VISIBILITY (h->other))
4564 {
4565 case STV_INTERNAL:
4566 case STV_HIDDEN:
4567 break;
4568 default:
4569 bfd_elf_link_record_dynamic_symbol (info, h);
4570 break;
4571 }
4572 picrel
4573 = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info),
4574 abfd, h,
4575 rel->r_addend, INSERT);
0f64bb02 4576 }
48d502e1
BS
4577 else
4578 picrel = bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info
4579 (info), abfd, r_symndx,
4580 rel->r_addend, INSERT);
4581 if (! picrel)
4582 return FALSE;
0f64bb02 4583 break;
48d502e1 4584
0f64bb02 4585 default:
48d502e1 4586 picrel = NULL;
0f64bb02
CM
4587 break;
4588 }
48d502e1
BS
4589
4590 switch (ELF32_R_TYPE (rel->r_info))
07d6d2b8 4591 {
cb88ce9f
BS
4592 case R_BFIN_PCREL24:
4593 case R_BFIN_PCREL24_JUMP_L:
48d502e1 4594 if (IS_FDPIC (abfd))
2774f1a6 4595 picrel->call++;
48d502e1
BS
4596 break;
4597
4598 case R_BFIN_FUNCDESC_VALUE:
4599 picrel->relocsfdv++;
fd361982 4600 if (bfd_section_flags (sec) & SEC_ALLOC)
48d502e1
BS
4601 picrel->relocs32--;
4602 /* Fall through. */
4603
cb88ce9f 4604 case R_BFIN_BYTE4_DATA:
48d502e1
BS
4605 if (! IS_FDPIC (abfd))
4606 break;
4607
2774f1a6 4608 picrel->sym++;
fd361982 4609 if (bfd_section_flags (sec) & SEC_ALLOC)
48d502e1
BS
4610 picrel->relocs32++;
4611 break;
4612
4613 case R_BFIN_GOT17M4:
2774f1a6 4614 picrel->got17m4++;
48d502e1
BS
4615 break;
4616
4617 case R_BFIN_GOTHI:
4618 case R_BFIN_GOTLO:
2774f1a6 4619 picrel->gothilo++;
48d502e1
BS
4620 break;
4621
4622 case R_BFIN_FUNCDESC_GOT17M4:
2774f1a6 4623 picrel->fdgot17m4++;
48d502e1
BS
4624 break;
4625
4626 case R_BFIN_FUNCDESC_GOTHI:
4627 case R_BFIN_FUNCDESC_GOTLO:
2774f1a6 4628 picrel->fdgothilo++;
48d502e1
BS
4629 break;
4630
4631 case R_BFIN_GOTOFF17M4:
4632 case R_BFIN_GOTOFFHI:
4633 case R_BFIN_GOTOFFLO:
2774f1a6 4634 picrel->gotoff++;
48d502e1
BS
4635 break;
4636
4637 case R_BFIN_FUNCDESC_GOTOFF17M4:
2774f1a6 4638 picrel->fdgoff17m4++;
48d502e1
BS
4639 break;
4640
4641 case R_BFIN_FUNCDESC_GOTOFFHI:
4642 case R_BFIN_FUNCDESC_GOTOFFLO:
2774f1a6 4643 picrel->fdgoffhilo++;
48d502e1
BS
4644 break;
4645
4646 case R_BFIN_FUNCDESC:
2774f1a6 4647 picrel->fd++;
48d502e1
BS
4648 picrel->relocsfd++;
4649 break;
4650
07d6d2b8
AM
4651 /* This relocation describes the C++ object vtable hierarchy.
4652 Reconstruct it for later use during GC. */
4653 case R_BFIN_GNU_VTINHERIT:
4654 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4655 return FALSE;
4656 break;
4657
4658 /* This relocation describes which C++ vtable entries are actually
4659 used. Record for later use during GC. */
4660 case R_BFIN_GNU_VTENTRY:
4661 BFD_ASSERT (h != NULL);
4662 if (h != NULL
4663 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4664 return FALSE;
4665 break;
48d502e1 4666
cb88ce9f
BS
4667 case R_BFIN_HUIMM16:
4668 case R_BFIN_LUIMM16:
4669 case R_BFIN_PCREL12_JUMP_S:
4670 case R_BFIN_PCREL10:
48d502e1
BS
4671 break;
4672
4673 default:
4674 bad_reloc:
4eca0228 4675 _bfd_error_handler
695344c0 4676 /* xgettext:c-format */
0aa13fee 4677 (_("%pB: unsupported relocation type %#x"),
d42c267e 4678 abfd, (int) ELF32_R_TYPE (rel->r_info));
48d502e1 4679 return FALSE;
07d6d2b8 4680 }
0f64bb02
CM
4681 }
4682
4683 return TRUE;
4684}
4685
48d502e1
BS
4686/* Set the right machine number for a Blackfin ELF file. */
4687
4688static bfd_boolean
4689elf32_bfin_object_p (bfd *abfd)
4690{
4691 bfd_default_set_arch_mach (abfd, bfd_arch_bfin, 0);
4692 return (((elf_elfheader (abfd)->e_flags & EF_BFIN_FDPIC) != 0)
4693 == (IS_FDPIC (abfd)));
4694}
0f64bb02 4695
0f64bb02 4696static bfd_boolean
48d502e1 4697elf32_bfin_set_private_flags (bfd * abfd, flagword flags)
0f64bb02 4698{
48d502e1
BS
4699 elf_elfheader (abfd)->e_flags = flags;
4700 elf_flags_init (abfd) = TRUE;
4701 return TRUE;
4702}
0f64bb02 4703
0f64bb02
CM
4704/* Display the flags field. */
4705static bfd_boolean
2c3fc389 4706elf32_bfin_print_private_bfd_data (bfd * abfd, void * ptr)
0f64bb02
CM
4707{
4708 FILE *file = (FILE *) ptr;
48d502e1 4709 flagword flags;
0f64bb02
CM
4710
4711 BFD_ASSERT (abfd != NULL && ptr != NULL);
4712
4713 /* Print normal ELF private data. */
4714 _bfd_elf_print_private_bfd_data (abfd, ptr);
4715
48d502e1 4716 flags = elf_elfheader (abfd)->e_flags;
0f64bb02
CM
4717
4718 /* xgettext:c-format */
4719 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4720
48d502e1
BS
4721 if (flags & EF_BFIN_PIC)
4722 fprintf (file, " -fpic");
4723
4724 if (flags & EF_BFIN_FDPIC)
4725 fprintf (file, " -mfdpic");
4726
0f64bb02
CM
4727 fputc ('\n', file);
4728
4729 return TRUE;
4730}
4731
48d502e1
BS
4732/* Merge backend specific data from an object file to the output
4733 object file when linking. */
4734
4735static bfd_boolean
50e03d47 4736elf32_bfin_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
48d502e1 4737{
50e03d47 4738 bfd *obfd = info->output_bfd;
7a84e3da 4739 flagword old_flags, new_flags;
48d502e1
BS
4740 bfd_boolean error = FALSE;
4741
6b728d32
AM
4742 /* FIXME: What should be checked when linking shared libraries? */
4743 if ((ibfd->flags & DYNAMIC) != 0)
4744 return TRUE;
4745
48d502e1
BS
4746 new_flags = elf_elfheader (ibfd)->e_flags;
4747 old_flags = elf_elfheader (obfd)->e_flags;
4748
4749 if (new_flags & EF_BFIN_FDPIC)
4750 new_flags &= ~EF_BFIN_PIC;
4751
c7e2358a
AM
4752#ifndef DEBUG
4753 if (0)
4754#endif
4eca0228 4755 _bfd_error_handler
871b3ab2 4756 ("old_flags = 0x%.8x, new_flags = 0x%.8x, init = %s, filename = %pB",
dae82561 4757 old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no", ibfd);
48d502e1
BS
4758
4759 if (!elf_flags_init (obfd)) /* First call, no flags set. */
4760 {
4761 elf_flags_init (obfd) = TRUE;
7a84e3da 4762 elf_elfheader (obfd)->e_flags = new_flags;
48d502e1
BS
4763 }
4764
7a84e3da 4765 if (((new_flags & EF_BFIN_FDPIC) == 0) != (! IS_FDPIC (obfd)))
48d502e1
BS
4766 {
4767 error = TRUE;
4768 if (IS_FDPIC (obfd))
4eca0228 4769 _bfd_error_handler
871b3ab2 4770 (_("%pB: cannot link non-fdpic object file into fdpic executable"),
dae82561 4771 ibfd);
48d502e1 4772 else
4eca0228 4773 _bfd_error_handler
871b3ab2 4774 (_("%pB: cannot link fdpic object file into non-fdpic executable"),
dae82561 4775 ibfd);
48d502e1
BS
4776 }
4777
4778 if (error)
4779 bfd_set_error (bfd_error_bad_value);
4780
4781 return !error;
4782}
4783\f
0f64bb02
CM
4784/* bfin ELF linker hash entry. */
4785
4786struct bfin_link_hash_entry
4787{
4788 struct elf_link_hash_entry root;
4789
4790 /* Number of PC relative relocs copied for this symbol. */
4791 struct bfin_pcrel_relocs_copied *pcrel_relocs_copied;
4792};
4793
0f64bb02
CM
4794#define bfin_hash_entry(ent) ((struct bfin_link_hash_entry *) (ent))
4795
4796static struct bfd_hash_entry *
4797bfin_link_hash_newfunc (struct bfd_hash_entry *entry,
48d502e1 4798 struct bfd_hash_table *table, const char *string)
0f64bb02
CM
4799{
4800 struct bfd_hash_entry *ret = entry;
4801
4802 /* Allocate the structure if it has not already been allocated by a
4803 subclass. */
4804 if (ret == NULL)
4805 ret = bfd_hash_allocate (table, sizeof (struct bfin_link_hash_entry));
4806 if (ret == NULL)
4807 return ret;
4808
4809 /* Call the allocation method of the superclass. */
4810 ret = _bfd_elf_link_hash_newfunc (ret, table, string);
4811 if (ret != NULL)
4812 bfin_hash_entry (ret)->pcrel_relocs_copied = NULL;
4813
4814 return ret;
4815}
4816
4817/* Create an bfin ELF linker hash table. */
4818
4819static struct bfd_link_hash_table *
4820bfin_link_hash_table_create (bfd * abfd)
4821{
f1dfbfdb
L
4822 struct elf_link_hash_table *ret;
4823 size_t amt = sizeof (struct elf_link_hash_table);
0f64bb02 4824
22cdc249 4825 ret = bfd_zmalloc (amt);
48d502e1 4826 if (ret == NULL)
0f64bb02
CM
4827 return NULL;
4828
f1dfbfdb 4829 if (!_bfd_elf_link_hash_table_init (ret, abfd, bfin_link_hash_newfunc,
4dfe6ac6
NC
4830 sizeof (struct elf_link_hash_entry),
4831 BFIN_ELF_DATA))
0f64bb02
CM
4832 {
4833 free (ret);
4834 return NULL;
4835 }
4836
f1dfbfdb 4837 return &ret->root;
0f64bb02
CM
4838}
4839
4840/* The size in bytes of an entry in the procedure linkage table. */
4841
4842/* Finish up the dynamic sections. */
4843
4844static bfd_boolean
4845bfin_finish_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
2c3fc389 4846 struct bfd_link_info *info)
0f64bb02
CM
4847{
4848 bfd *dynobj;
4849 asection *sdyn;
4850
4851 dynobj = elf_hash_table (info)->dynobj;
4852
3d4d4302 4853 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
0f64bb02
CM
4854
4855 if (elf_hash_table (info)->dynamic_sections_created)
4856 {
4857 Elf32_External_Dyn *dyncon, *dynconend;
4858
4859 BFD_ASSERT (sdyn != NULL);
4860
4861 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4862 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4863 for (; dyncon < dynconend; dyncon++)
4864 {
4865 Elf_Internal_Dyn dyn;
4866
4867 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4868
4869 }
4870
4871 }
4872 return TRUE;
4873}
4874
4875/* Finish up dynamic symbol handling. We set the contents of various
4876 dynamic sections here. */
4877
4878static bfd_boolean
4879bfin_finish_dynamic_symbol (bfd * output_bfd,
2c3fc389
NC
4880 struct bfd_link_info *info,
4881 struct elf_link_hash_entry *h,
4882 Elf_Internal_Sym * sym)
0f64bb02 4883{
0f64bb02
CM
4884 if (h->got.offset != (bfd_vma) - 1)
4885 {
4886 asection *sgot;
4887 asection *srela;
4888 Elf_Internal_Rela rela;
4889 bfd_byte *loc;
4890
4891 /* This symbol has an entry in the global offset table.
07d6d2b8 4892 Set it up. */
0f64bb02 4893
ce558b89
AM
4894 sgot = elf_hash_table (info)->sgot;
4895 srela = elf_hash_table (info)->srelgot;
0f64bb02
CM
4896 BFD_ASSERT (sgot != NULL && srela != NULL);
4897
4898 rela.r_offset = (sgot->output_section->vma
4899 + sgot->output_offset
4900 + (h->got.offset & ~(bfd_vma) 1));
4901
4902 /* If this is a -Bsymbolic link, and the symbol is defined
07d6d2b8
AM
4903 locally, we just want to emit a RELATIVE reloc. Likewise if
4904 the symbol was forced to be local because of a version file.
4905 The entry in the global offset table will already have been
4906 initialized in the relocate_section function. */
0e1862bb 4907 if (bfd_link_pic (info)
0f64bb02
CM
4908 && (info->symbolic
4909 || h->dynindx == -1 || h->forced_local) && h->def_regular)
4910 {
4eca0228
AM
4911 _bfd_error_handler (_("*** check this relocation %s"),
4912 __FUNCTION__);
cb88ce9f 4913 rela.r_info = ELF32_R_INFO (0, R_BFIN_PCREL24);
0f64bb02
CM
4914 rela.r_addend = bfd_get_signed_32 (output_bfd,
4915 (sgot->contents
4916 +
4917 (h->got.
4918 offset & ~(bfd_vma) 1)));
4919 }
4920 else
4921 {
4922 bfd_put_32 (output_bfd, (bfd_vma) 0,
4923 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
cb88ce9f 4924 rela.r_info = ELF32_R_INFO (h->dynindx, R_BFIN_GOT);
0f64bb02
CM
4925 rela.r_addend = 0;
4926 }
4927
4928 loc = srela->contents;
4929 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
4930 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4931 }
4932
4933 if (h->needs_copy)
4934 {
4935 BFD_ASSERT (0);
4936 }
4937 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
5592d7ec 4938 if (strcmp (h->root.root.string, "__DYNAMIC") == 0
22edb2f1 4939 || h == elf_hash_table (info)->hgot)
0f64bb02
CM
4940 sym->st_shndx = SHN_ABS;
4941
4942 return TRUE;
4943}
4944
4945/* Adjust a symbol defined by a dynamic object and referenced by a
4946 regular object. The current definition is in some section of the
4947 dynamic object, but we're not including those sections. We have to
4948 change the definition to something the rest of the link can
4949 understand. */
4950
4951static bfd_boolean
4952bfin_adjust_dynamic_symbol (struct bfd_link_info *info,
2c3fc389 4953 struct elf_link_hash_entry *h)
0f64bb02
CM
4954{
4955 bfd *dynobj;
4956 asection *s;
4957 unsigned int power_of_two;
4958
4959 dynobj = elf_hash_table (info)->dynobj;
4960
4961 /* Make sure we know what is going on here. */
4962 BFD_ASSERT (dynobj != NULL
4963 && (h->needs_plt
60d67dc8 4964 || h->is_weakalias
0f64bb02
CM
4965 || (h->def_dynamic && h->ref_regular && !h->def_regular)));
4966
4967 /* If this is a function, put it in the procedure linkage table. We
4968 will fill in the contents of the procedure linkage table later,
4969 when we know the address of the .got section. */
4970 if (h->type == STT_FUNC || h->needs_plt)
4971 {
4972 BFD_ASSERT(0);
4973 }
4974
4975 /* If this is a weak symbol, and there is a real definition, the
4976 processor independent code will have arranged for us to see the
4977 real definition first, and we can just use the same value. */
60d67dc8 4978 if (h->is_weakalias)
0f64bb02 4979 {
60d67dc8
AM
4980 struct elf_link_hash_entry *def = weakdef (h);
4981 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
4982 h->root.u.def.section = def->root.u.def.section;
4983 h->root.u.def.value = def->root.u.def.value;
0f64bb02
CM
4984 return TRUE;
4985 }
4986
4987 /* This is a reference to a symbol defined by a dynamic object which
4988 is not a function. */
4989
4990 /* If we are creating a shared library, we must presume that the
4991 only references to the symbol are via the global offset table.
4992 For such cases we need not do anything here; the relocations will
4993 be handled correctly by relocate_section. */
0e1862bb 4994 if (bfd_link_pic (info))
0f64bb02
CM
4995 return TRUE;
4996
4997 /* We must allocate the symbol in our .dynbss section, which will
4998 become part of the .bss section of the executable. There will be
4999 an entry for this symbol in the .dynsym section. The dynamic
5000 object will contain position independent code, so all references
5001 from the dynamic object to this symbol will go through the global
5002 offset table. The dynamic linker will use the .dynsym entry to
5003 determine the address it must put in the global offset table, so
5004 both the dynamic object and the regular object will refer to the
5005 same memory location for the variable. */
5006
3d4d4302 5007 s = bfd_get_linker_section (dynobj, ".dynbss");
0f64bb02
CM
5008 BFD_ASSERT (s != NULL);
5009
1b857aee
NC
5010#if 0 /* Bfin does not currently have a COPY reloc. */
5011 /* We must generate a R_BFIN_COPY reloc to tell the dynamic linker to
0f64bb02
CM
5012 copy the initial value out of the dynamic object and into the
5013 runtime process image. We need to remember the offset into the
5014 .rela.bss section we are going to use. */
5015 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5016 {
5017 asection *srel;
5018
3d4d4302 5019 srel = bfd_get_linker_section (dynobj, ".rela.bss");
0f64bb02
CM
5020 BFD_ASSERT (srel != NULL);
5021 srel->size += sizeof (Elf32_External_Rela);
5022 h->needs_copy = 1;
5023 }
1b857aee
NC
5024#else
5025 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5026 {
4eca0228 5027 _bfd_error_handler (_("the bfin target does not currently support the generation of copy relocations"));
1b857aee
NC
5028 return FALSE;
5029 }
5030#endif
0f64bb02
CM
5031 /* We need to figure out the alignment required for this symbol. I
5032 have no idea how ELF linkers handle this. */
5033 power_of_two = bfd_log2 (h->size);
5034 if (power_of_two > 3)
5035 power_of_two = 3;
5036
5037 /* Apply the required alignment. */
5038 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
fd361982 5039 if (power_of_two > bfd_section_alignment (s))
0f64bb02 5040 {
fd361982 5041 if (!bfd_set_section_alignment (s, power_of_two))
0f64bb02
CM
5042 return FALSE;
5043 }
5044
5045 /* Define the symbol as being at this point in the section. */
5046 h->root.u.def.section = s;
5047 h->root.u.def.value = s->size;
5048
5049 /* Increment the section size to make room for the symbol. */
5050 s->size += h->size;
5051
5052 return TRUE;
5053}
5054
5055/* The bfin linker needs to keep track of the number of relocs that it
5056 decides to copy in check_relocs for each symbol. This is so that it
5057 can discard PC relative relocs if it doesn't need them when linking
5058 with -Bsymbolic. We store the information in a field extending the
5059 regular ELF linker hash table. */
5060
5061/* This structure keeps track of the number of PC relative relocs we have
5062 copied for a given symbol. */
5063
5064struct bfin_pcrel_relocs_copied
5065{
5066 /* Next section. */
5067 struct bfin_pcrel_relocs_copied *next;
5068 /* A section in dynobj. */
5069 asection *section;
5070 /* Number of relocs copied in this section. */
5071 bfd_size_type count;
5072};
5073
5074/* This function is called via elf_link_hash_traverse if we are
5075 creating a shared object. In the -Bsymbolic case it discards the
5076 space allocated to copy PC relative relocs against symbols which
5077 are defined in regular objects. For the normal shared case, it
5078 discards space for pc-relative relocs that have become local due to
5079 symbol visibility changes. We allocated space for them in the
5080 check_relocs routine, but we won't fill them in in the
5081 relocate_section routine.
5082
5083 We also check whether any of the remaining relocations apply
5084 against a readonly section, and set the DF_TEXTREL flag in this
5085 case. */
5086
5087static bfd_boolean
2c3fc389 5088bfin_discard_copies (struct elf_link_hash_entry *h, void * inf)
0f64bb02
CM
5089{
5090 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5091 struct bfin_pcrel_relocs_copied *s;
5092
0f64bb02
CM
5093 if (!h->def_regular || (!info->symbolic && !h->forced_local))
5094 {
5095 if ((info->flags & DF_TEXTREL) == 0)
5096 {
5097 /* Look for relocations against read-only sections. */
5098 for (s = bfin_hash_entry (h)->pcrel_relocs_copied;
5099 s != NULL; s = s->next)
5100 if ((s->section->flags & SEC_READONLY) != 0)
5101 {
5102 info->flags |= DF_TEXTREL;
5103 break;
5104 }
5105 }
5106
5107 return TRUE;
5108 }
5109
5110 for (s = bfin_hash_entry (h)->pcrel_relocs_copied;
5111 s != NULL; s = s->next)
5112 s->section->size -= s->count * sizeof (Elf32_External_Rela);
5113
5114 return TRUE;
5115}
5116
0f64bb02
CM
5117static bfd_boolean
5118bfin_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
2c3fc389 5119 struct bfd_link_info *info)
0f64bb02
CM
5120{
5121 bfd *dynobj;
5122 asection *s;
5123 bfd_boolean relocs;
5124
5125 dynobj = elf_hash_table (info)->dynobj;
5126 BFD_ASSERT (dynobj != NULL);
5127
5128 if (elf_hash_table (info)->dynamic_sections_created)
5129 {
5130 /* Set the contents of the .interp section to the interpreter. */
9d45a7de 5131 if (bfd_link_executable (info) && !info->nointerp)
0f64bb02 5132 {
3d4d4302 5133 s = bfd_get_linker_section (dynobj, ".interp");
0f64bb02
CM
5134 BFD_ASSERT (s != NULL);
5135 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5136 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5137 }
5138 }
5139 else
5140 {
5141 /* We may have created entries in the .rela.got section.
07d6d2b8
AM
5142 However, if we are not creating the dynamic sections, we will
5143 not actually use these entries. Reset the size of .rela.got,
5144 which will cause it to get stripped from the output file
5145 below. */
ce558b89 5146 s = elf_hash_table (info)->srelgot;
0f64bb02
CM
5147 if (s != NULL)
5148 s->size = 0;
5149 }
5150
5151 /* If this is a -Bsymbolic shared link, then we need to discard all
5152 PC relative relocs against symbols defined in a regular object.
5153 For the normal shared case we discard the PC relative relocs
5154 against symbols that have become local due to visibility changes.
5155 We allocated space for them in the check_relocs routine, but we
5156 will not fill them in in the relocate_section routine. */
0e1862bb 5157 if (bfd_link_pic (info))
0f64bb02 5158 elf_link_hash_traverse (elf_hash_table (info),
2c3fc389 5159 bfin_discard_copies, info);
0f64bb02
CM
5160
5161 /* The check_relocs and adjust_dynamic_symbol entry points have
5162 determined the sizes of the various dynamic sections. Allocate
5163 memory for them. */
5164 relocs = FALSE;
5165 for (s = dynobj->sections; s != NULL; s = s->next)
5166 {
5167 const char *name;
5168 bfd_boolean strip;
5169
5170 if ((s->flags & SEC_LINKER_CREATED) == 0)
5171 continue;
5172
5173 /* It's OK to base decisions on the section name, because none
07d6d2b8 5174 of the dynobj section names depend upon the input files. */
fd361982 5175 name = bfd_section_name (s);
0f64bb02
CM
5176
5177 strip = FALSE;
5178
0112cd26 5179 if (CONST_STRNEQ (name, ".rela"))
0f64bb02
CM
5180 {
5181 if (s->size == 0)
5182 {
5183 /* If we don't need this section, strip it from the
07d6d2b8
AM
5184 output file. This is mostly to handle .rela.bss and
5185 .rela.plt. We must create both sections in
5186 create_dynamic_sections, because they must be created
5187 before the linker maps input sections to output
5188 sections. The linker does that before
5189 adjust_dynamic_symbol is called, and it is that
5190 function which decides whether anything needs to go
5191 into these sections. */
0f64bb02
CM
5192 strip = TRUE;
5193 }
5194 else
5195 {
5196 relocs = TRUE;
5197
5198 /* We use the reloc_count field as a counter if we need
07d6d2b8 5199 to copy relocs into the output file. */
0f64bb02
CM
5200 s->reloc_count = 0;
5201 }
5202 }
0112cd26 5203 else if (! CONST_STRNEQ (name, ".got"))
0f64bb02
CM
5204 {
5205 /* It's not one of our sections, so don't allocate space. */
5206 continue;
5207 }
5208
5209 if (strip)
5210 {
5211 s->flags |= SEC_EXCLUDE;
5212 continue;
5213 }
5214
5215 /* Allocate memory for the section contents. */
5216 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
07d6d2b8
AM
5217 Unused entries should be reclaimed before the section's contents
5218 are written out, but at the moment this does not happen. Thus in
5219 order to prevent writing out garbage, we initialise the section's
5220 contents to zero. */
0f64bb02
CM
5221 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
5222 if (s->contents == NULL && s->size != 0)
5223 return FALSE;
5224 }
5225
5226 if (elf_hash_table (info)->dynamic_sections_created)
5227 {
5228 /* Add some entries to the .dynamic section. We fill in the
07d6d2b8
AM
5229 values later, in bfin_finish_dynamic_sections, but we
5230 must add the entries now so that we get the correct size for
5231 the .dynamic section. The DT_DEBUG entry is filled in by the
5232 dynamic linker and used by the debugger. */
0f64bb02
CM
5233#define add_dynamic_entry(TAG, VAL) \
5234 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5235
0e1862bb 5236 if (!bfd_link_pic (info))
0f64bb02
CM
5237 {
5238 if (!add_dynamic_entry (DT_DEBUG, 0))
5239 return FALSE;
5240 }
5241
5242
5243 if (relocs)
5244 {
5245 if (!add_dynamic_entry (DT_RELA, 0)
5246 || !add_dynamic_entry (DT_RELASZ, 0)
5247 || !add_dynamic_entry (DT_RELAENT,
5248 sizeof (Elf32_External_Rela)))
5249 return FALSE;
5250 }
5251
5252 if ((info->flags & DF_TEXTREL) != 0)
5253 {
5254 if (!add_dynamic_entry (DT_TEXTREL, 0))
5255 return FALSE;
5256 }
5257 }
5258#undef add_dynamic_entry
5259
5260 return TRUE;
5261}
48d502e1 5262\f
0f64bb02
CM
5263/* Given a .data section and a .emreloc in-memory section, store
5264 relocation information into the .emreloc section which can be
5265 used at runtime to relocate the section. This is called by the
5266 linker when the --embedded-relocs switch is used. This is called
5267 after the add_symbols entry point has been called for all the
5268 objects, and before the final_link entry point is called. */
5269
5270bfd_boolean
2c3fc389
NC
5271bfd_bfin_elf32_create_embedded_relocs (bfd *abfd,
5272 struct bfd_link_info *info,
5273 asection *datasec,
5274 asection *relsec,
5275 char **errmsg)
0f64bb02
CM
5276{
5277 Elf_Internal_Shdr *symtab_hdr;
5278 Elf_Internal_Sym *isymbuf = NULL;
5279 Elf_Internal_Rela *internal_relocs = NULL;
5280 Elf_Internal_Rela *irel, *irelend;
5281 bfd_byte *p;
5282 bfd_size_type amt;
5283
0e1862bb 5284 BFD_ASSERT (! bfd_link_relocatable (info));
0f64bb02
CM
5285
5286 *errmsg = NULL;
5287
5288 if (datasec->reloc_count == 0)
5289 return TRUE;
5290
5291 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5292
5293 /* Get a copy of the native relocations. */
5294 internal_relocs = (_bfd_elf_link_read_relocs
2c3fc389 5295 (abfd, datasec, NULL, (Elf_Internal_Rela *) NULL,
0f64bb02
CM
5296 info->keep_memory));
5297 if (internal_relocs == NULL)
5298 goto error_return;
5299
5300 amt = (bfd_size_type) datasec->reloc_count * 12;
5301 relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt);
5302 if (relsec->contents == NULL)
5303 goto error_return;
5304
5305 p = relsec->contents;
5306
5307 irelend = internal_relocs + datasec->reloc_count;
5308 for (irel = internal_relocs; irel < irelend; irel++, p += 12)
5309 {
5310 asection *targetsec;
5311
5312 /* We are going to write a four byte longword into the runtime
5313 reloc section. The longword will be the address in the data
5314 section which must be relocated. It is followed by the name
5315 of the target section NUL-padded or truncated to 8
5316 characters. */
5317
5318 /* We can only relocate absolute longword relocs at run time. */
cb88ce9f 5319 if (ELF32_R_TYPE (irel->r_info) != (int) R_BFIN_BYTE4_DATA)
0f64bb02 5320 {
0aa13fee 5321 *errmsg = _("unsupported relocation type");
0f64bb02
CM
5322 bfd_set_error (bfd_error_bad_value);
5323 goto error_return;
5324 }
5325
5326 /* Get the target section referred to by the reloc. */
5327 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5328 {
5329 /* A local symbol. */
5330 Elf_Internal_Sym *isym;
5331
5332 /* Read this BFD's local symbols if we haven't done so already. */
5333 if (isymbuf == NULL)
5334 {
5335 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5336 if (isymbuf == NULL)
5337 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5338 symtab_hdr->sh_info, 0,
5339 NULL, NULL, NULL);
5340 if (isymbuf == NULL)
5341 goto error_return;
5342 }
5343
5344 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5345 targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
5346 }
5347 else
5348 {
5349 unsigned long indx;
5350 struct elf_link_hash_entry *h;
5351
5352 /* An external symbol. */
5353 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5354 h = elf_sym_hashes (abfd)[indx];
5355 BFD_ASSERT (h != NULL);
5356 if (h->root.type == bfd_link_hash_defined
5357 || h->root.type == bfd_link_hash_defweak)
5358 targetsec = h->root.u.def.section;
5359 else
5360 targetsec = NULL;
5361 }
5362
5363 bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p);
5364 memset (p + 4, 0, 8);
5365 if (targetsec != NULL)
9ba4c445 5366 strncpy ((char *) p + 4, targetsec->output_section->name, 8);
0f64bb02
CM
5367 }
5368
c9594989 5369 if (symtab_hdr->contents != (unsigned char *) isymbuf)
0f64bb02 5370 free (isymbuf);
c9594989 5371 if (elf_section_data (datasec)->relocs != internal_relocs)
0f64bb02
CM
5372 free (internal_relocs);
5373 return TRUE;
5374
dc1e8a47 5375 error_return:
c9594989 5376 if (symtab_hdr->contents != (unsigned char *) isymbuf)
0f64bb02 5377 free (isymbuf);
c9594989 5378 if (elf_section_data (datasec)->relocs != internal_relocs)
0f64bb02
CM
5379 free (internal_relocs);
5380 return FALSE;
5381}
b0a0b978
JZ
5382
5383struct bfd_elf_special_section const elf32_bfin_special_sections[] =
5384{
5385 { ".l1.text", 8, -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
5386 { ".l1.data", 8, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
07d6d2b8 5387 { NULL, 0, 0, 0, 0 }
b0a0b978
JZ
5388};
5389
48d502e1 5390\f
6d00b590 5391#define TARGET_LITTLE_SYM bfin_elf32_vec
0f64bb02
CM
5392#define TARGET_LITTLE_NAME "elf32-bfin"
5393#define ELF_ARCH bfd_arch_bfin
ae95ffa6 5394#define ELF_TARGET_ID BFIN_ELF_DATA
3b55e94a 5395#define ELF_MACHINE_CODE EM_BLACKFIN
0f64bb02
CM
5396#define ELF_MAXPAGESIZE 0x1000
5397#define elf_symbol_leading_char '_'
5398
5399#define bfd_elf32_bfd_reloc_type_lookup bfin_bfd_reloc_type_lookup
157090f7
AM
5400#define bfd_elf32_bfd_reloc_name_lookup \
5401 bfin_bfd_reloc_name_lookup
0f64bb02 5402#define elf_info_to_howto bfin_info_to_howto
f3185997 5403#define elf_info_to_howto_rel NULL
48d502e1 5404#define elf_backend_object_p elf32_bfin_object_p
0f64bb02
CM
5405
5406#define bfd_elf32_bfd_is_local_label_name \
07d6d2b8 5407 bfin_is_local_label_name
0f64bb02
CM
5408
5409#define elf_backend_create_dynamic_sections \
07d6d2b8 5410 _bfd_elf_create_dynamic_sections
0f64bb02 5411#define bfd_elf32_bfd_link_hash_table_create \
07d6d2b8
AM
5412 bfin_link_hash_table_create
5413#define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link
0f64bb02 5414
07d6d2b8 5415#define elf_backend_check_relocs bfin_check_relocs
0f64bb02 5416#define elf_backend_adjust_dynamic_symbol \
07d6d2b8 5417 bfin_adjust_dynamic_symbol
0f64bb02 5418#define elf_backend_size_dynamic_sections \
07d6d2b8
AM
5419 bfin_size_dynamic_sections
5420#define elf_backend_relocate_section bfin_relocate_section
0f64bb02 5421#define elf_backend_finish_dynamic_symbol \
07d6d2b8 5422 bfin_finish_dynamic_symbol
0f64bb02 5423#define elf_backend_finish_dynamic_sections \
07d6d2b8
AM
5424 bfin_finish_dynamic_sections
5425#define elf_backend_gc_mark_hook bfin_gc_mark_hook
0f64bb02 5426#define bfd_elf32_bfd_merge_private_bfd_data \
07d6d2b8 5427 elf32_bfin_merge_private_bfd_data
0f64bb02 5428#define bfd_elf32_bfd_set_private_flags \
07d6d2b8 5429 elf32_bfin_set_private_flags
0f64bb02 5430#define bfd_elf32_bfd_print_private_bfd_data \
07d6d2b8 5431 elf32_bfin_print_private_bfd_data
781303ce 5432#define elf_backend_final_write_processing \
07d6d2b8
AM
5433 elf32_bfin_final_write_processing
5434#define elf_backend_reloc_type_class elf32_bfin_reloc_type_class
04c3a755 5435#define elf_backend_stack_align 8
0f64bb02 5436#define elf_backend_can_gc_sections 1
b0a0b978 5437#define elf_backend_special_sections elf32_bfin_special_sections
0f64bb02
CM
5438#define elf_backend_can_refcount 1
5439#define elf_backend_want_got_plt 0
5440#define elf_backend_plt_readonly 1
5441#define elf_backend_want_plt_sym 0
07d6d2b8
AM
5442#define elf_backend_got_header_size 12
5443#define elf_backend_rela_normal 1
0f64bb02 5444
48d502e1
BS
5445#include "elf32-target.h"
5446
5447#undef TARGET_LITTLE_SYM
07d6d2b8 5448#define TARGET_LITTLE_SYM bfin_elf32_fdpic_vec
48d502e1
BS
5449#undef TARGET_LITTLE_NAME
5450#define TARGET_LITTLE_NAME "elf32-bfinfdpic"
5451#undef elf32_bed
07d6d2b8 5452#define elf32_bed elf32_bfinfdpic_bed
48d502e1 5453
48d502e1 5454#undef elf_backend_got_header_size
07d6d2b8 5455#define elf_backend_got_header_size 0
48d502e1
BS
5456
5457#undef elf_backend_relocate_section
07d6d2b8 5458#define elf_backend_relocate_section bfinfdpic_relocate_section
48d502e1 5459#undef elf_backend_check_relocs
07d6d2b8 5460#define elf_backend_check_relocs bfinfdpic_check_relocs
48d502e1
BS
5461
5462#undef bfd_elf32_bfd_link_hash_table_create
5463#define bfd_elf32_bfd_link_hash_table_create \
5464 bfinfdpic_elf_link_hash_table_create
5465#undef elf_backend_always_size_sections
5466#define elf_backend_always_size_sections \
5467 elf32_bfinfdpic_always_size_sections
48d502e1
BS
5468
5469#undef elf_backend_create_dynamic_sections
5470#define elf_backend_create_dynamic_sections \
5471 elf32_bfinfdpic_create_dynamic_sections
5472#undef elf_backend_adjust_dynamic_symbol
5473#define elf_backend_adjust_dynamic_symbol \
5474 elf32_bfinfdpic_adjust_dynamic_symbol
5475#undef elf_backend_size_dynamic_sections
5476#define elf_backend_size_dynamic_sections \
5477 elf32_bfinfdpic_size_dynamic_sections
5478#undef elf_backend_finish_dynamic_symbol
5479#define elf_backend_finish_dynamic_symbol \
5480 elf32_bfinfdpic_finish_dynamic_symbol
5481#undef elf_backend_finish_dynamic_sections
5482#define elf_backend_finish_dynamic_sections \
5483 elf32_bfinfdpic_finish_dynamic_sections
5484
6a9adeca
BS
5485#undef elf_backend_discard_info
5486#define elf_backend_discard_info \
5487 bfinfdpic_elf_discard_info
48d502e1
BS
5488#undef elf_backend_can_make_relative_eh_frame
5489#define elf_backend_can_make_relative_eh_frame \
5490 bfinfdpic_elf_use_relative_eh_frame
5491#undef elf_backend_can_make_lsda_relative_eh_frame
5492#define elf_backend_can_make_lsda_relative_eh_frame \
5493 bfinfdpic_elf_use_relative_eh_frame
5494#undef elf_backend_encode_eh_address
5495#define elf_backend_encode_eh_address \
5496 bfinfdpic_elf_encode_eh_address
5497
5498#undef elf_backend_may_use_rel_p
07d6d2b8 5499#define elf_backend_may_use_rel_p 1
48d502e1 5500#undef elf_backend_may_use_rela_p
07d6d2b8 5501#define elf_backend_may_use_rela_p 1
48d502e1
BS
5502/* We use REL for dynamic relocations only. */
5503#undef elf_backend_default_use_rela_p
07d6d2b8 5504#define elf_backend_default_use_rela_p 1
48d502e1
BS
5505
5506#undef elf_backend_omit_section_dynsym
5507#define elf_backend_omit_section_dynsym _bfinfdpic_link_omit_section_dynsym
0f64bb02
CM
5508
5509#include "elf32-target.h"