2008-02-11 Maxim Grigoriev <maxim2405@gmail.com>
[deliverable/binutils-gdb.git] / bfd / elf32-bfin.c
CommitLineData
3b55e94a 1/* ADI Blackfin BFD support for 32-bit ELF.
ab96bf03 2 Copyright 2005, 2006, 2007 Free Software Foundation, Inc.
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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
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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"
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23#include "libbfd.h"
24#include "elf-bfd.h"
25#include "elf/bfin.h"
48d502e1
BS
26#include "elf/dwarf2.h"
27#include "hashtab.h"
0f64bb02 28
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29/* FUNCTION : bfin_pltpc_reloc
30 ABSTRACT : TODO : figure out how to handle pltpc relocs. */
31static bfd_reloc_status_type
32bfin_pltpc_reloc (
33 bfd *abfd ATTRIBUTE_UNUSED,
34 arelent *reloc_entry ATTRIBUTE_UNUSED,
35 asymbol *symbol ATTRIBUTE_UNUSED,
36 PTR data ATTRIBUTE_UNUSED,
37 asection *input_section ATTRIBUTE_UNUSED,
38 bfd *output_bfd ATTRIBUTE_UNUSED,
3b55e94a 39 char **error_message ATTRIBUTE_UNUSED)
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40{
41 bfd_reloc_status_type flag = bfd_reloc_ok;
3b55e94a 42 return flag;
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43}
44\f
45
46static bfd_reloc_status_type
47bfin_pcrel24_reloc (bfd *abfd,
48 arelent *reloc_entry,
49 asymbol *symbol,
50 PTR data,
51 asection *input_section,
52 bfd *output_bfd,
53 char **error_message ATTRIBUTE_UNUSED)
54{
55 bfd_vma relocation;
56 bfd_size_type addr = reloc_entry->address;
57 bfd_vma output_base = 0;
58 reloc_howto_type *howto = reloc_entry->howto;
59 asection *output_section;
60 bfd_boolean relocatable = (output_bfd != NULL);
61
62 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
63 return bfd_reloc_outofrange;
64
3b55e94a
BS
65 if (bfd_is_und_section (symbol->section)
66 && (symbol->flags & BSF_WEAK) == 0
67 && !relocatable)
68 return bfd_reloc_undefined;
69
70 if (bfd_is_com_section (symbol->section))
71 relocation = 0;
0f64bb02 72 else
3b55e94a 73 relocation = symbol->value;
0f64bb02 74
3b55e94a
BS
75 output_section = symbol->section->output_section;
76
77 if (relocatable)
78 output_base = 0;
79 else
80 output_base = output_section->vma;
81
82 if (!relocatable || !strcmp (symbol->name, symbol->section->name))
83 relocation += output_base + symbol->section->output_offset;
0f64bb02 84
3b55e94a
BS
85 if (!relocatable && !strcmp (symbol->name, symbol->section->name))
86 relocation += reloc_entry->addend;
0f64bb02 87
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88 relocation -= input_section->output_section->vma + input_section->output_offset;
89 relocation -= reloc_entry->address;
90
91 if (howto->complain_on_overflow != complain_overflow_dont)
92 {
93 bfd_reloc_status_type status;
3b55e94a
BS
94 status = bfd_check_overflow (howto->complain_on_overflow,
95 howto->bitsize,
96 howto->rightshift,
97 bfd_arch_bits_per_address(abfd),
98 relocation);
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99 if (status != bfd_reloc_ok)
100 return status;
101 }
3b55e94a 102
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103 /* if rightshift is 1 and the number odd, return error. */
104 if (howto->rightshift && (relocation & 0x01))
105 {
106 fprintf(stderr, "relocation should be even number\n");
107 return bfd_reloc_overflow;
108 }
109
110 relocation >>= (bfd_vma) howto->rightshift;
111 /* Shift everything up to where it's going to be used. */
112
113 relocation <<= (bfd_vma) howto->bitpos;
114
115 if (relocatable)
116 {
117 reloc_entry->address += input_section->output_offset;
118 reloc_entry->addend += symbol->section->output_offset;
119 }
120
121 {
122 short x;
123
124 /* We are getting reloc_entry->address 2 byte off from
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BS
125 the start of instruction. Assuming absolute postion
126 of the reloc data. But, following code had been written assuming
127 reloc address is starting at begining of instruction.
128 To compensate that I have increased the value of
129 relocation by 1 (effectively 2) and used the addr -2 instead of addr. */
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130
131 relocation += 1;
132 x = bfd_get_16 (abfd, (bfd_byte *) data + addr - 2);
133 x = (x & 0xff00) | ((relocation >> 16) & 0xff);
134 bfd_put_16 (abfd, x, (unsigned char *) data + addr - 2);
135
136 x = bfd_get_16 (abfd, (bfd_byte *) data + addr);
137 x = relocation & 0xFFFF;
138 bfd_put_16 (abfd, x, (unsigned char *) data + addr );
139 }
140 return bfd_reloc_ok;
141}
142
143static bfd_reloc_status_type
3b55e94a
BS
144bfin_imm16_reloc (bfd *abfd,
145 arelent *reloc_entry,
146 asymbol *symbol,
147 PTR data,
148 asection *input_section,
149 bfd *output_bfd,
150 char **error_message ATTRIBUTE_UNUSED)
0f64bb02 151{
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BS
152 bfd_vma relocation, x;
153 bfd_size_type reloc_addr = reloc_entry->address;
0f64bb02 154 bfd_vma output_base = 0;
3b55e94a 155 reloc_howto_type *howto = reloc_entry->howto;
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156 asection *output_section;
157 bfd_boolean relocatable = (output_bfd != NULL);
158
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BS
159 /* Is the address of the relocation really within the section? */
160 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
161 return bfd_reloc_outofrange;
162
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163 if (bfd_is_und_section (symbol->section)
164 && (symbol->flags & BSF_WEAK) == 0
165 && !relocatable)
166 return bfd_reloc_undefined;
167
0f64bb02 168 output_section = symbol->section->output_section;
3b55e94a 169 relocation = symbol->value;
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170
171 /* Convert input-section-relative symbol value to absolute. */
172 if (relocatable)
173 output_base = 0;
174 else
175 output_base = output_section->vma;
176
3b55e94a 177 if (!relocatable || !strcmp (symbol->name, symbol->section->name))
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178 relocation += output_base + symbol->section->output_offset;
179
180 /* Add in supplied addend. */
181 relocation += reloc_entry->addend;
182
183 if (relocatable)
184 {
185 reloc_entry->address += input_section->output_offset;
186 reloc_entry->addend += symbol->section->output_offset;
187 }
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188 else
189 {
190 reloc_entry->addend = 0;
191 }
192
193 if (howto->complain_on_overflow != complain_overflow_dont)
194 {
195 bfd_reloc_status_type flag;
196 flag = bfd_check_overflow (howto->complain_on_overflow,
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197 howto->bitsize,
198 howto->rightshift,
199 bfd_arch_bits_per_address(abfd),
200 relocation);
0f64bb02 201 if (flag != bfd_reloc_ok)
3b55e94a 202 return flag;
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203 }
204
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205 /* Here the variable relocation holds the final address of the
206 symbol we are relocating against, plus any addend. */
207
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208 relocation >>= (bfd_vma) howto->rightshift;
209 x = relocation;
210 bfd_put_16 (abfd, x, (unsigned char *) data + reloc_addr);
211 return bfd_reloc_ok;
212}
213
214
215static bfd_reloc_status_type
216bfin_byte4_reloc (bfd *abfd,
217 arelent *reloc_entry,
218 asymbol *symbol,
219 PTR data,
220 asection *input_section,
221 bfd *output_bfd,
3b55e94a 222 char **error_message ATTRIBUTE_UNUSED)
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223{
224 bfd_vma relocation, x;
225 bfd_size_type addr = reloc_entry->address;
226 bfd_vma output_base = 0;
227 asection *output_section;
228 bfd_boolean relocatable = (output_bfd != NULL);
229
230 /* Is the address of the relocation really within the section? */
231 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
232 return bfd_reloc_outofrange;
233
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BS
234 if (bfd_is_und_section (symbol->section)
235 && (symbol->flags & BSF_WEAK) == 0
236 && !relocatable)
237 return bfd_reloc_undefined;
0f64bb02 238
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BS
239 output_section = symbol->section->output_section;
240 relocation = symbol->value;
241 /* Convert input-section-relative symbol value to absolute. */
242 if (relocatable)
243 output_base = 0;
0f64bb02 244 else
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BS
245 output_base = output_section->vma;
246
247 if ((symbol->name
248 && symbol->section->name
249 && !strcmp (symbol->name, symbol->section->name))
250 || !relocatable)
0f64bb02 251 {
3b55e94a 252 relocation += output_base + symbol->section->output_offset;
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253 }
254
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BS
255 relocation += reloc_entry->addend;
256
0f64bb02 257 if (relocatable)
3b55e94a 258 {
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259 /* This output will be relocatable ... like ld -r. */
260 reloc_entry->address += input_section->output_offset;
261 reloc_entry->addend += symbol->section->output_offset;
262 }
263 else
264 {
265 reloc_entry->addend = 0;
266 }
267
268 /* Here the variable relocation holds the final address of the
269 symbol we are relocating against, plus any addend. */
270 x = relocation & 0xFFFF0000;
271 x >>=16;
272 bfd_put_16 (abfd, x, (unsigned char *) data + addr + 2);
3b55e94a 273
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274 x = relocation & 0x0000FFFF;
275 bfd_put_16 (abfd, x, (unsigned char *) data + addr);
276 return bfd_reloc_ok;
277}
278
279/* bfin_bfd_reloc handles the blackfin arithmetic relocations.
280 Use this instead of bfd_perform_relocation. */
281static bfd_reloc_status_type
282bfin_bfd_reloc (bfd *abfd,
283 arelent *reloc_entry,
284 asymbol *symbol,
285 PTR data,
286 asection *input_section,
287 bfd *output_bfd,
288 char **error_message ATTRIBUTE_UNUSED)
289{
290 bfd_vma relocation;
291 bfd_size_type addr = reloc_entry->address;
292 bfd_vma output_base = 0;
293 reloc_howto_type *howto = reloc_entry->howto;
294 asection *output_section;
295 bfd_boolean relocatable = (output_bfd != NULL);
296
297 /* Is the address of the relocation really within the section? */
298 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
299 return bfd_reloc_outofrange;
300
3b55e94a
BS
301 if (bfd_is_und_section (symbol->section)
302 && (symbol->flags & BSF_WEAK) == 0
303 && !relocatable)
304 return bfd_reloc_undefined;
305
306 /* Get symbol value. (Common symbols are special.) */
307 if (bfd_is_com_section (symbol->section))
308 relocation = 0;
0f64bb02 309 else
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BS
310 relocation = symbol->value;
311
312 output_section = symbol->section->output_section;
313
314 /* Convert input-section-relative symbol value to absolute. */
315 if (relocatable)
316 output_base = 0;
317 else
318 output_base = output_section->vma;
319
320 if (!relocatable || !strcmp (symbol->name, symbol->section->name))
321 relocation += output_base + symbol->section->output_offset;
322
323 if (!relocatable && !strcmp (symbol->name, symbol->section->name))
0f64bb02 324 {
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325 /* Add in supplied addend. */
326 relocation += reloc_entry->addend;
0f64bb02 327 }
3b55e94a 328
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329 /* Here the variable relocation holds the final address of the
330 symbol we are relocating against, plus any addend. */
331
332 if (howto->pc_relative == TRUE)
333 {
334 relocation -= input_section->output_section->vma + input_section->output_offset;
335
336 if (howto->pcrel_offset == TRUE)
337 relocation -= reloc_entry->address;
338 }
339
340 if (relocatable)
341 {
342 reloc_entry->address += input_section->output_offset;
343 reloc_entry->addend += symbol->section->output_offset;
344 }
345
346 if (howto->complain_on_overflow != complain_overflow_dont)
347 {
348 bfd_reloc_status_type status;
349
3b55e94a 350 status = bfd_check_overflow (howto->complain_on_overflow,
0f64bb02 351 howto->bitsize,
3b55e94a 352 howto->rightshift,
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353 bfd_arch_bits_per_address(abfd),
354 relocation);
355 if (status != bfd_reloc_ok)
356 return status;
357 }
3b55e94a 358
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359 /* If rightshift is 1 and the number odd, return error. */
360 if (howto->rightshift && (relocation & 0x01))
361 {
362 fprintf(stderr, "relocation should be even number\n");
363 return bfd_reloc_overflow;
364 }
365
366 relocation >>= (bfd_vma) howto->rightshift;
367
368 /* Shift everything up to where it's going to be used. */
369
370 relocation <<= (bfd_vma) howto->bitpos;
371
3b55e94a 372#define DOIT(x) \
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373 x = ( (x & ~howto->dst_mask) | (relocation & howto->dst_mask))
374
375 /* handle 8 and 16 bit relocations here. */
376 switch (howto->size)
377 {
378 case 0:
379 {
380 char x = bfd_get_8 (abfd, (char *) data + addr);
381 DOIT (x);
382 bfd_put_8 (abfd, x, (unsigned char *) data + addr);
383 }
384 break;
385
386 case 1:
387 {
388 unsigned short x = bfd_get_16 (abfd, (bfd_byte *) data + addr);
389 DOIT (x);
390 bfd_put_16 (abfd, (bfd_vma) x, (unsigned char *) data + addr);
391 }
392 break;
393
394 default:
395 return bfd_reloc_other;
396 }
397
3b55e94a 398 return bfd_reloc_ok;
0f64bb02
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399}
400
0f64bb02
CM
401/* HOWTO Table for blackfin.
402 Blackfin relocations are fairly complicated.
403 Some of the salient features are
404 a. Even numbered offsets. A number of (not all) relocations are
405 even numbered. This means that the rightmost bit is not stored.
406 Needs to right shift by 1 and check to see if value is not odd
407 b. A relocation can be an expression. An expression takes on
408 a variety of relocations arranged in a stack.
409 As a result, we cannot use the standard generic function as special
410 function. We will have our own, which is very similar to the standard
411 generic function except that it understands how to get the value from
412 the relocation stack. . */
413
414#define BFIN_RELOC_MIN 0
48d502e1 415#define BFIN_RELOC_MAX 0x21
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416#define BFIN_GNUEXT_RELOC_MIN 0x40
417#define BFIN_GNUEXT_RELOC_MAX 0x43
418#define BFIN_ARELOC_MIN 0xE0
419#define BFIN_ARELOC_MAX 0xF3
420
421static reloc_howto_type bfin_howto_table [] =
422{
423 /* This reloc does nothing. . */
424 HOWTO (R_unused0, /* type. */
425 0, /* rightshift. */
426 2, /* size (0 = byte, 1 = short, 2 = long). */
427 32, /* bitsize. */
428 FALSE, /* pc_relative. */
429 0, /* bitpos. */
430 complain_overflow_bitfield, /* complain_on_overflow. */
431 bfd_elf_generic_reloc, /* special_function. */
432 "R_unused0", /* name. */
433 FALSE, /* partial_inplace. */
434 0, /* src_mask. */
435 0, /* dst_mask. */
436 FALSE), /* pcrel_offset. */
437
438 HOWTO (R_pcrel5m2, /* type. */
439 1, /* rightshift. */
440 1, /* size (0 = byte, 1 = short, 2 = long).. */
441 4, /* bitsize. */
442 TRUE, /* pc_relative. */
443 0, /* bitpos. */
444 complain_overflow_unsigned, /* complain_on_overflow. */
445 bfin_bfd_reloc, /* special_function. */
446 "R_pcrel5m2", /* name. */
447 FALSE, /* partial_inplace. */
f4707595 448 0, /* src_mask. */
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449 0x0000000F, /* dst_mask. */
450 FALSE), /* pcrel_offset. */
451
452 HOWTO (R_unused1, /* type. */
453 0, /* rightshift. */
454 2, /* size (0 = byte, 1 = short, 2 = long). */
455 32, /* bitsize. */
456 FALSE, /* pc_relative. */
457 0, /* bitpos. */
458 complain_overflow_bitfield, /* complain_on_overflow. */
459 bfd_elf_generic_reloc, /* special_function. */
460 "R_unused1", /* name. */
461 FALSE, /* partial_inplace. */
462 0, /* src_mask. */
463 0, /* dst_mask. */
464 FALSE), /* pcrel_offset. */
465
466 HOWTO (R_pcrel10, /* type. */
467 1, /* rightshift. */
468 1, /* size (0 = byte, 1 = short, 2 = long). */
469 10, /* bitsize. */
470 TRUE, /* pc_relative. */
471 0, /* bitpos. */
472 complain_overflow_signed, /* complain_on_overflow. */
473 bfin_bfd_reloc, /* special_function. */
474 "R_pcrel10", /* name. */
475 FALSE, /* partial_inplace. */
f4707595 476 0, /* src_mask. */
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477 0x000003FF, /* dst_mask. */
478 TRUE), /* pcrel_offset. */
3b55e94a 479
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CM
480 HOWTO (R_pcrel12_jump, /* type. */
481 1, /* rightshift. */
482 /* the offset is actually 13 bit
483 aligned on a word boundary so
484 only 12 bits have to be used.
485 Right shift the rightmost bit.. */
486 1, /* size (0 = byte, 1 = short, 2 = long). */
487 12, /* bitsize. */
488 TRUE, /* pc_relative. */
489 0, /* bitpos. */
490 complain_overflow_signed, /* complain_on_overflow. */
491 bfin_bfd_reloc, /* special_function. */
492 "R_pcrel12_jump", /* name. */
493 FALSE, /* partial_inplace. */
f4707595 494 0, /* src_mask. */
0f64bb02
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495 0x0FFF, /* dst_mask. */
496 TRUE), /* pcrel_offset. */
497
498 HOWTO (R_rimm16, /* type. */
499 0, /* rightshift. */
500 1, /* size (0 = byte, 1 = short, 2 = long). */
501 16, /* bitsize. */
502 FALSE, /* pc_relative. */
503 0, /* bitpos. */
504 complain_overflow_signed, /* complain_on_overflow. */
505 bfin_imm16_reloc, /* special_function. */
506 "R_rimm16", /* name. */
507 FALSE, /* partial_inplace. */
f4707595 508 0, /* src_mask. */
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509 0x0000FFFF, /* dst_mask. */
510 TRUE), /* pcrel_offset. */
511
512 HOWTO (R_luimm16, /* type. */
513 0, /* rightshift. */
514 1, /* size (0 = byte, 1 = short, 2 = long). */
515 16, /* bitsize. */
516 FALSE, /* pc_relative. */
517 0, /* bitpos. */
518 complain_overflow_dont, /* complain_on_overflow. */
519 bfin_imm16_reloc, /* special_function. */
520 "R_luimm16", /* name. */
521 FALSE, /* partial_inplace. */
f4707595 522 0, /* src_mask. */
0f64bb02
CM
523 0x0000FFFF, /* dst_mask. */
524 TRUE), /* pcrel_offset. */
3b55e94a 525
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CM
526 HOWTO (R_huimm16, /* type. */
527 16, /* rightshift. */
528 1, /* size (0 = byte, 1 = short, 2 = long). */
529 16, /* bitsize. */
530 FALSE, /* pc_relative. */
531 0, /* bitpos. */
532 complain_overflow_unsigned, /* complain_on_overflow. */
533 bfin_imm16_reloc, /* special_function. */
534 "R_huimm16", /* name. */
535 FALSE, /* partial_inplace. */
f4707595 536 0, /* src_mask. */
0f64bb02
CM
537 0x0000FFFF, /* dst_mask. */
538 TRUE), /* pcrel_offset. */
539
540 HOWTO (R_pcrel12_jump_s, /* type. */
541 1, /* rightshift. */
542 1, /* size (0 = byte, 1 = short, 2 = long). */
543 12, /* bitsize. */
544 TRUE, /* pc_relative. */
545 0, /* bitpos. */
546 complain_overflow_signed, /* complain_on_overflow. */
547 bfin_bfd_reloc, /* special_function. */
548 "R_pcrel12_jump_s", /* name. */
549 FALSE, /* partial_inplace. */
f4707595 550 0, /* src_mask. */
0f64bb02
CM
551 0x00000FFF, /* dst_mask. */
552 TRUE), /* pcrel_offset. */
553
554 HOWTO (R_pcrel24_jump_x, /* type. */
555 1, /* rightshift. */
556 2, /* size (0 = byte, 1 = short, 2 = long). */
557 24, /* bitsize. */
558 TRUE, /* pc_relative. */
559 0, /* bitpos. */
560 complain_overflow_signed, /* complain_on_overflow. */
561 bfin_pcrel24_reloc, /* special_function. */
562 "R_pcrel24_jump_x", /* name. */
563 FALSE, /* partial_inplace. */
f4707595 564 0, /* src_mask. */
0f64bb02
CM
565 0x00FFFFFF, /* dst_mask. */
566 TRUE), /* pcrel_offset. */
567
568 HOWTO (R_pcrel24, /* type. */
569 1, /* rightshift. */
570 2, /* size (0 = byte, 1 = short, 2 = long). */
571 24, /* bitsize. */
572 TRUE, /* pc_relative. */
573 0, /* bitpos. */
574 complain_overflow_signed, /* complain_on_overflow. */
575 bfin_pcrel24_reloc, /* special_function. */
576 "R_pcrel24", /* name. */
577 FALSE, /* partial_inplace. */
f4707595 578 0, /* src_mask. */
0f64bb02
CM
579 0x00FFFFFF, /* dst_mask. */
580 TRUE), /* pcrel_offset. */
581
582 HOWTO (R_unusedb, /* type. */
583 0, /* rightshift. */
584 2, /* size (0 = byte, 1 = short, 2 = long). */
585 32, /* bitsize. */
586 FALSE, /* pc_relative. */
587 0, /* bitpos. */
588 complain_overflow_dont, /* complain_on_overflow. */
589 bfd_elf_generic_reloc, /* special_function. */
590 "R_unusedb", /* name. */
591 FALSE, /* partial_inplace. */
592 0, /* src_mask. */
593 0, /* dst_mask. */
594 FALSE), /* pcrel_offset. */
595
596 HOWTO (R_unusedc, /* type. */
597 0, /* rightshift. */
598 2, /* size (0 = byte, 1 = short, 2 = long). */
599 32, /* bitsize. */
600 FALSE, /* pc_relative. */
601 0, /* bitpos. */
602 complain_overflow_dont, /* complain_on_overflow. */
603 bfd_elf_generic_reloc, /* special_function. */
604 "R_unusedc", /* name. */
605 FALSE, /* partial_inplace. */
606 0, /* src_mask. */
607 0, /* dst_mask. */
608 FALSE), /* pcrel_offset. */
609
610 HOWTO (R_pcrel24_jump_l, /* type. */
611 1, /* rightshift. */
612 2, /* size (0 = byte, 1 = short, 2 = long). */
613 24, /* bitsize. */
614 TRUE, /* pc_relative. */
615 0, /* bitpos. */
616 complain_overflow_signed, /* complain_on_overflow. */
617 bfin_pcrel24_reloc, /* special_function. */
618 "R_pcrel24_jump_l", /* name. */
619 FALSE, /* partial_inplace. */
f4707595 620 0, /* src_mask. */
0f64bb02
CM
621 0x00FFFFFF, /* dst_mask. */
622 TRUE), /* pcrel_offset. */
623
624 HOWTO (R_pcrel24_call_x, /* type. */
625 1, /* rightshift. */
626 2, /* size (0 = byte, 1 = short, 2 = long). */
627 24, /* bitsize. */
628 TRUE, /* pc_relative. */
629 0, /* bitpos. */
630 complain_overflow_signed, /* complain_on_overflow. */
631 bfin_pcrel24_reloc, /* special_function. */
632 "R_pcrel24_call_x", /* name. */
633 FALSE, /* partial_inplace. */
f4707595 634 0, /* src_mask. */
0f64bb02
CM
635 0x00FFFFFF, /* dst_mask. */
636 TRUE), /* pcrel_offset. */
637
638 HOWTO (R_var_eq_symb, /* type. */
639 0, /* rightshift. */
640 2, /* size (0 = byte, 1 = short, 2 = long). */
641 32, /* bitsize. */
642 FALSE, /* pc_relative. */
643 0, /* bitpos. */
644 complain_overflow_bitfield, /* complain_on_overflow. */
645 bfin_bfd_reloc, /* special_function. */
646 "R_var_eq_symb", /* name. */
647 FALSE, /* partial_inplace. */
648 0, /* src_mask. */
649 0, /* dst_mask. */
650 FALSE), /* pcrel_offset. */
651
652 HOWTO (R_byte_data, /* type. */
653 0, /* rightshift. */
654 0, /* size (0 = byte, 1 = short, 2 = long). */
655 8, /* bitsize. */
656 FALSE, /* pc_relative. */
657 0, /* bitpos. */
658 complain_overflow_unsigned, /* complain_on_overflow. */
659 bfin_bfd_reloc, /* special_function. */
660 "R_byte_data", /* name. */
661 FALSE, /* partial_inplace. */
f4707595 662 0, /* src_mask. */
0f64bb02
CM
663 0xFF, /* dst_mask. */
664 TRUE), /* pcrel_offset. */
665
666 HOWTO (R_byte2_data, /* type. */
667 0, /* rightshift. */
668 1, /* size (0 = byte, 1 = short, 2 = long). */
669 16, /* bitsize. */
670 FALSE, /* pc_relative. */
671 0, /* bitpos. */
672 complain_overflow_signed, /* complain_on_overflow. */
673 bfin_bfd_reloc, /* special_function. */
674 "R_byte2_data", /* name. */
675 FALSE, /* partial_inplace. */
f4707595 676 0, /* src_mask. */
0f64bb02
CM
677 0xFFFF, /* dst_mask. */
678 TRUE), /* pcrel_offset. */
679
680 HOWTO (R_byte4_data, /* type. */
681 0, /* rightshift. */
682 2, /* size (0 = byte, 1 = short, 2 = long). */
683 32, /* bitsize. */
684 FALSE, /* pc_relative. */
685 0, /* bitpos. */
686 complain_overflow_unsigned, /* complain_on_overflow. */
687 bfin_byte4_reloc, /* special_function. */
688 "R_byte4_data", /* name. */
689 FALSE, /* partial_inplace. */
f4707595 690 0, /* src_mask. */
0f64bb02
CM
691 0xFFFFFFFF, /* dst_mask. */
692 TRUE), /* pcrel_offset. */
693
694 HOWTO (R_pcrel11, /* type. */
695 1, /* rightshift. */
696 1, /* size (0 = byte, 1 = short, 2 = long). */
697 10, /* bitsize. */
698 TRUE, /* pc_relative. */
699 0, /* bitpos. */
700 complain_overflow_unsigned, /* complain_on_overflow. */
701 bfin_bfd_reloc, /* special_function. */
702 "R_pcrel11", /* name. */
703 FALSE, /* partial_inplace. */
f4707595 704 0, /* src_mask. */
0f64bb02
CM
705 0x000003FF, /* dst_mask. */
706 FALSE), /* pcrel_offset. */
48d502e1
BS
707
708
709 /* A 18-bit signed operand with the GOT offset for the address of
710 the symbol. */
711 HOWTO (R_BFIN_GOT17M4, /* type */
712 2, /* rightshift */
713 1, /* size (0 = byte, 1 = short, 2 = long) */
714 16, /* bitsize */
715 FALSE, /* pc_relative */
716 0, /* bitpos */
717 complain_overflow_signed, /* complain_on_overflow */
718 bfd_elf_generic_reloc, /* special_function */
5dff4664 719 "R_BFIN_GOT17M4", /* name */
48d502e1
BS
720 FALSE, /* partial_inplace */
721 0xffff, /* src_mask */
722 0xffff, /* dst_mask */
723 FALSE), /* pcrel_offset */
724
725 /* The upper 16 bits of the GOT offset for the address of the
726 symbol. */
727 HOWTO (R_BFIN_GOTHI, /* type */
728 0, /* rightshift */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
730 16, /* bitsize */
731 FALSE, /* pc_relative */
732 0, /* bitpos */
733 complain_overflow_dont, /* complain_on_overflow */
734 bfd_elf_generic_reloc, /* special_function */
735 "R_BFIN_GOTHI", /* name */
736 FALSE, /* partial_inplace */
737 0xffff, /* src_mask */
738 0xffff, /* dst_mask */
739 FALSE), /* pcrel_offset */
740
741 /* The lower 16 bits of the GOT offset for the address of the
742 symbol. */
743 HOWTO (R_BFIN_GOTLO, /* type */
744 0, /* rightshift */
745 1, /* size (0 = byte, 1 = short, 2 = long) */
746 16, /* bitsize */
747 FALSE, /* pc_relative */
748 0, /* bitpos */
749 complain_overflow_dont, /* complain_on_overflow */
750 bfd_elf_generic_reloc, /* special_function */
751 "R_BFIN_GOTLO", /* name */
752 FALSE, /* partial_inplace */
753 0xffff, /* src_mask */
754 0xffff, /* dst_mask */
755 FALSE), /* pcrel_offset */
756
757 /* The 32-bit address of the canonical descriptor of a function. */
758 HOWTO (R_BFIN_FUNCDESC, /* type */
759 0, /* rightshift */
760 2, /* size (0 = byte, 1 = short, 2 = long) */
761 32, /* bitsize */
762 FALSE, /* pc_relative */
763 0, /* bitpos */
764 complain_overflow_bitfield, /* complain_on_overflow */
765 bfd_elf_generic_reloc, /* special_function */
766 "R_BFIN_FUNCDESC", /* name */
767 FALSE, /* partial_inplace */
768 0xffffffff, /* src_mask */
769 0xffffffff, /* dst_mask */
770 FALSE), /* pcrel_offset */
771
772 /* A 12-bit signed operand with the GOT offset for the address of
773 canonical descriptor of a function. */
774 HOWTO (R_BFIN_FUNCDESC_GOT17M4, /* type */
775 2, /* rightshift */
776 1, /* size (0 = byte, 1 = short, 2 = long) */
777 16, /* bitsize */
778 FALSE, /* pc_relative */
779 0, /* bitpos */
780 complain_overflow_signed, /* complain_on_overflow */
781 bfd_elf_generic_reloc, /* special_function */
782 "R_BFIN_FUNCDESC_GOT17M4", /* name */
783 FALSE, /* partial_inplace */
784 0xffff, /* src_mask */
785 0xffff, /* dst_mask */
786 FALSE), /* pcrel_offset */
787
788 /* The upper 16 bits of the GOT offset for the address of the
789 canonical descriptor of a function. */
790 HOWTO (R_BFIN_FUNCDESC_GOTHI, /* type */
791 0, /* rightshift */
792 1, /* size (0 = byte, 1 = short, 2 = long) */
793 16, /* bitsize */
794 FALSE, /* pc_relative */
795 0, /* bitpos */
796 complain_overflow_dont, /* complain_on_overflow */
797 bfd_elf_generic_reloc, /* special_function */
798 "R_BFIN_FUNCDESC_GOTHI", /* name */
799 FALSE, /* partial_inplace */
800 0xffff, /* src_mask */
801 0xffff, /* dst_mask */
802 FALSE), /* pcrel_offset */
803
804 /* The lower 16 bits of the GOT offset for the address of the
805 canonical descriptor of a function. */
806 HOWTO (R_BFIN_FUNCDESC_GOTLO, /* type */
807 0, /* rightshift */
808 1, /* size (0 = byte, 1 = short, 2 = long) */
809 16, /* bitsize */
810 FALSE, /* pc_relative */
811 0, /* bitpos */
812 complain_overflow_dont, /* complain_on_overflow */
813 bfd_elf_generic_reloc, /* special_function */
814 "R_BFIN_FUNCDESC_GOTLO", /* name */
815 FALSE, /* partial_inplace */
816 0xffff, /* src_mask */
817 0xffff, /* dst_mask */
818 FALSE), /* pcrel_offset */
819
820 /* The 32-bit address of the canonical descriptor of a function. */
821 HOWTO (R_BFIN_FUNCDESC_VALUE, /* type */
822 0, /* rightshift */
823 2, /* size (0 = byte, 1 = short, 2 = long) */
824 64, /* bitsize */
825 FALSE, /* pc_relative */
826 0, /* bitpos */
827 complain_overflow_bitfield, /* complain_on_overflow */
828 bfd_elf_generic_reloc, /* special_function */
829 "R_BFIN_FUNCDESC_VALUE", /* name */
830 FALSE, /* partial_inplace */
831 0xffffffff, /* src_mask */
832 0xffffffff, /* dst_mask */
833 FALSE), /* pcrel_offset */
834
835 /* A 12-bit signed operand with the GOT offset for the address of
836 canonical descriptor of a function. */
837 HOWTO (R_BFIN_FUNCDESC_GOTOFF17M4, /* type */
838 2, /* rightshift */
839 1, /* size (0 = byte, 1 = short, 2 = long) */
840 16, /* bitsize */
841 FALSE, /* pc_relative */
842 0, /* bitpos */
843 complain_overflow_signed, /* complain_on_overflow */
844 bfd_elf_generic_reloc, /* special_function */
845 "R_BFIN_FUNCDESC_GOTOFF17M4", /* name */
846 FALSE, /* partial_inplace */
847 0xffff, /* src_mask */
848 0xffff, /* dst_mask */
849 FALSE), /* pcrel_offset */
850
851 /* The upper 16 bits of the GOT offset for the address of the
852 canonical descriptor of a function. */
853 HOWTO (R_BFIN_FUNCDESC_GOTOFFHI, /* type */
854 0, /* rightshift */
855 1, /* size (0 = byte, 1 = short, 2 = long) */
856 16, /* bitsize */
857 FALSE, /* pc_relative */
858 0, /* bitpos */
859 complain_overflow_dont, /* complain_on_overflow */
860 bfd_elf_generic_reloc, /* special_function */
861 "R_BFIN_FUNCDESC_GOTOFFHI", /* name */
862 FALSE, /* partial_inplace */
863 0xffff, /* src_mask */
864 0xffff, /* dst_mask */
865 FALSE), /* pcrel_offset */
866
867 /* The lower 16 bits of the GOT offset for the address of the
868 canonical descriptor of a function. */
869 HOWTO (R_BFIN_FUNCDESC_GOTOFFLO, /* type */
870 0, /* rightshift */
871 1, /* size (0 = byte, 1 = short, 2 = long) */
872 16, /* bitsize */
873 FALSE, /* pc_relative */
874 0, /* bitpos */
875 complain_overflow_dont, /* complain_on_overflow */
876 bfd_elf_generic_reloc, /* special_function */
877 "R_BFIN_FUNCDESC_GOTOFFLO", /* name */
878 FALSE, /* partial_inplace */
879 0xffff, /* src_mask */
880 0xffff, /* dst_mask */
881 FALSE), /* pcrel_offset */
882
883 /* A 12-bit signed operand with the GOT offset for the address of
884 the symbol. */
885 HOWTO (R_BFIN_GOTOFF17M4, /* type */
886 2, /* rightshift */
887 1, /* size (0 = byte, 1 = short, 2 = long) */
888 16, /* bitsize */
889 FALSE, /* pc_relative */
890 0, /* bitpos */
891 complain_overflow_signed, /* complain_on_overflow */
892 bfd_elf_generic_reloc, /* special_function */
893 "R_BFIN_GOTOFF17M4", /* name */
894 FALSE, /* partial_inplace */
895 0xffff, /* src_mask */
896 0xffff, /* dst_mask */
897 FALSE), /* pcrel_offset */
898
899 /* The upper 16 bits of the GOT offset for the address of the
900 symbol. */
901 HOWTO (R_BFIN_GOTOFFHI, /* type */
902 0, /* rightshift */
903 1, /* size (0 = byte, 1 = short, 2 = long) */
904 16, /* bitsize */
905 FALSE, /* pc_relative */
906 0, /* bitpos */
907 complain_overflow_dont, /* complain_on_overflow */
908 bfd_elf_generic_reloc, /* special_function */
909 "R_BFIN_GOTOFFHI", /* name */
910 FALSE, /* partial_inplace */
911 0xffff, /* src_mask */
912 0xffff, /* dst_mask */
913 FALSE), /* pcrel_offset */
914
915 /* The lower 16 bits of the GOT offset for the address of the
916 symbol. */
917 HOWTO (R_BFIN_GOTOFFLO, /* type */
918 0, /* rightshift */
919 1, /* size (0 = byte, 1 = short, 2 = long) */
920 16, /* bitsize */
921 FALSE, /* pc_relative */
922 0, /* bitpos */
923 complain_overflow_dont, /* complain_on_overflow */
924 bfd_elf_generic_reloc, /* special_function */
925 "R_BFIN_GOTOFFLO", /* name */
926 FALSE, /* partial_inplace */
927 0xffff, /* src_mask */
928 0xffff, /* dst_mask */
929 FALSE), /* pcrel_offset */
0f64bb02
CM
930};
931
0f64bb02
CM
932static reloc_howto_type bfin_gnuext_howto_table [] =
933{
934 HOWTO (R_pltpc, /* type. */
935 0, /* rightshift. */
936 1, /* size (0 = byte, 1 = short, 2 = long). */
937 16, /* bitsize. */
938 FALSE, /* pc_relative. */
939 0, /* bitpos. */
940 complain_overflow_bitfield, /* complain_on_overflow. */
941 bfin_pltpc_reloc, /* special_function. */
942 "R_pltpc", /* name. */
943 FALSE, /* partial_inplace. */
944 0xffff, /* src_mask. */
945 0xffff, /* dst_mask. */
946 FALSE), /* pcrel_offset. */
947
948 HOWTO (R_got, /* type. */
949 0, /* rightshift. */
950 1, /* size (0 = byte, 1 = short, 2 = long). */
951 16, /* bitsize. */
952 FALSE, /* pc_relative. */
953 0, /* bitpos. */
954 complain_overflow_bitfield, /* complain_on_overflow. */
955 bfd_elf_generic_reloc, /* special_function. */
956 "R_got", /* name. */
957 FALSE, /* partial_inplace. */
958 0x7fff, /* src_mask. */
959 0x7fff, /* dst_mask. */
960 FALSE), /* pcrel_offset. */
961
962/* GNU extension to record C++ vtable hierarchy. */
963 HOWTO (R_BFIN_GNU_VTINHERIT, /* type. */
964 0, /* rightshift. */
965 2, /* size (0 = byte, 1 = short, 2 = long). */
966 0, /* bitsize. */
967 FALSE, /* pc_relative. */
968 0, /* bitpos. */
969 complain_overflow_dont, /* complain_on_overflow. */
970 NULL, /* special_function. */
971 "R_BFIN_GNU_VTINHERIT", /* name. */
972 FALSE, /* partial_inplace. */
973 0, /* src_mask. */
974 0, /* dst_mask. */
975 FALSE), /* pcrel_offset. */
976
977/* GNU extension to record C++ vtable member usage. */
978 HOWTO (R_BFIN_GNU_VTENTRY, /* type. */
979 0, /* rightshift. */
980 2, /* size (0 = byte, 1 = short, 2 = long). */
981 0, /* bitsize. */
982 FALSE, /* pc_relative. */
983 0, /* bitpos. */
984 complain_overflow_dont, /* complain_on_overflow. */
985 _bfd_elf_rel_vtable_reloc_fn, /* special_function. */
986 "R_BFIN_GNU_VTENTRY", /* name. */
987 FALSE, /* partial_inplace. */
988 0, /* src_mask. */
989 0, /* dst_mask. */
990 FALSE) /* pcrel_offset. */
991};
992
993struct bfin_reloc_map
994{
995 bfd_reloc_code_real_type bfd_reloc_val;
996 unsigned int bfin_reloc_val;
997};
998
999static const struct bfin_reloc_map bfin_reloc_map [] =
1000{
1001 { BFD_RELOC_NONE, R_unused0 },
1002 { BFD_RELOC_BFIN_5_PCREL, R_pcrel5m2 },
1003 { BFD_RELOC_NONE, R_unused1 },
1004 { BFD_RELOC_BFIN_10_PCREL, R_pcrel10 },
1005 { BFD_RELOC_BFIN_12_PCREL_JUMP, R_pcrel12_jump },
1006 { BFD_RELOC_BFIN_16_IMM, R_rimm16 },
1007 { BFD_RELOC_BFIN_16_LOW, R_luimm16 },
1008 { BFD_RELOC_BFIN_16_HIGH, R_huimm16 },
1009 { BFD_RELOC_BFIN_12_PCREL_JUMP_S, R_pcrel12_jump_s },
1010 { BFD_RELOC_24_PCREL, R_pcrel24 },
1011 { BFD_RELOC_24_PCREL, R_pcrel24 },
1012 { BFD_RELOC_BFIN_24_PCREL_JUMP_L, R_pcrel24_jump_l },
1013 { BFD_RELOC_NONE, R_unusedb },
1014 { BFD_RELOC_NONE, R_unusedc },
1015 { BFD_RELOC_BFIN_24_PCREL_CALL_X, R_pcrel24_call_x },
1016 { BFD_RELOC_8, R_byte_data },
1017 { BFD_RELOC_16, R_byte2_data },
1018 { BFD_RELOC_32, R_byte4_data },
1019 { BFD_RELOC_BFIN_11_PCREL, R_pcrel11 },
1020 { BFD_RELOC_BFIN_GOT, R_got },
1021 { BFD_RELOC_BFIN_PLTPC, R_pltpc },
48d502e1
BS
1022
1023 { BFD_RELOC_BFIN_GOT17M4, R_BFIN_GOT17M4 },
1024 { BFD_RELOC_BFIN_GOTHI, R_BFIN_GOTHI },
1025 { BFD_RELOC_BFIN_GOTLO, R_BFIN_GOTLO },
1026 { BFD_RELOC_BFIN_FUNCDESC, R_BFIN_FUNCDESC },
1027 { BFD_RELOC_BFIN_FUNCDESC_GOT17M4, R_BFIN_FUNCDESC_GOT17M4 },
1028 { BFD_RELOC_BFIN_FUNCDESC_GOTHI, R_BFIN_FUNCDESC_GOTHI },
1029 { BFD_RELOC_BFIN_FUNCDESC_GOTLO, R_BFIN_FUNCDESC_GOTLO },
1030 { BFD_RELOC_BFIN_FUNCDESC_VALUE, R_BFIN_FUNCDESC_VALUE },
1031 { BFD_RELOC_BFIN_FUNCDESC_GOTOFF17M4, R_BFIN_FUNCDESC_GOTOFF17M4 },
1032 { BFD_RELOC_BFIN_FUNCDESC_GOTOFFHI, R_BFIN_FUNCDESC_GOTOFFHI },
1033 { BFD_RELOC_BFIN_FUNCDESC_GOTOFFLO, R_BFIN_FUNCDESC_GOTOFFLO },
1034 { BFD_RELOC_BFIN_GOTOFF17M4, R_BFIN_GOTOFF17M4 },
1035 { BFD_RELOC_BFIN_GOTOFFHI, R_BFIN_GOTOFFHI },
1036 { BFD_RELOC_BFIN_GOTOFFLO, R_BFIN_GOTOFFLO },
1037
0f64bb02
CM
1038 { BFD_RELOC_VTABLE_INHERIT, R_BFIN_GNU_VTINHERIT },
1039 { BFD_RELOC_VTABLE_ENTRY, R_BFIN_GNU_VTENTRY },
0f64bb02
CM
1040};
1041
1042
1043static void
1044bfin_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1045 arelent *cache_ptr,
1046 Elf_Internal_Rela *dst)
1047{
1048 unsigned int r_type;
1049
1050 r_type = ELF32_R_TYPE (dst->r_info);
1051
1052 if (r_type <= BFIN_RELOC_MAX)
1053 cache_ptr->howto = &bfin_howto_table [r_type];
1054
0f64bb02
CM
1055 else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX)
1056 cache_ptr->howto = &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN];
1057
1058 else
1059 cache_ptr->howto = (reloc_howto_type *) NULL;
0f64bb02 1060}
157090f7 1061
0f64bb02
CM
1062/* Given a BFD reloc type, return the howto. */
1063static reloc_howto_type *
1064bfin_bfd_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
1065 bfd_reloc_code_real_type code)
1066{
1067 unsigned int i;
1068 unsigned int r_type = BFIN_RELOC_MIN;
1069
1070 for (i = sizeof (bfin_reloc_map) / sizeof (bfin_reloc_map[0]); --i;)
1071 if (bfin_reloc_map[i].bfd_reloc_val == code)
1072 r_type = bfin_reloc_map[i].bfin_reloc_val;
1073
1074 if (r_type <= BFIN_RELOC_MAX && r_type > BFIN_RELOC_MIN)
1075 return &bfin_howto_table [r_type];
1076
0f64bb02
CM
1077 else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX)
1078 return &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN];
1079
1080 return (reloc_howto_type *) NULL;
157090f7 1081}
0f64bb02 1082
157090f7
AM
1083static reloc_howto_type *
1084bfin_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1085 const char *r_name)
1086{
1087 unsigned int i;
1088
1089 for (i = 0;
1090 i < (sizeof (bfin_howto_table)
1091 / sizeof (bfin_howto_table[0]));
1092 i++)
1093 if (bfin_howto_table[i].name != NULL
1094 && strcasecmp (bfin_howto_table[i].name, r_name) == 0)
1095 return &bfin_howto_table[i];
1096
1097 for (i = 0;
1098 i < (sizeof (bfin_gnuext_howto_table)
1099 / sizeof (bfin_gnuext_howto_table[0]));
1100 i++)
1101 if (bfin_gnuext_howto_table[i].name != NULL
1102 && strcasecmp (bfin_gnuext_howto_table[i].name, r_name) == 0)
1103 return &bfin_gnuext_howto_table[i];
1104
1105 return NULL;
0f64bb02 1106}
157090f7 1107
0f64bb02
CM
1108/* Given a bfin relocation type, return the howto. */
1109static reloc_howto_type *
1110bfin_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
1111 unsigned int r_type)
1112{
1113 if (r_type <= BFIN_RELOC_MAX)
1114 return &bfin_howto_table [r_type];
1115
0f64bb02
CM
1116 else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX)
1117 return &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN];
1118
1119 return (reloc_howto_type *) NULL;
0f64bb02
CM
1120}
1121
1122/* Return TRUE if the name is a local label.
1123 bfin local labels begin with L$. */
1124static bfd_boolean
1125bfin_is_local_label_name (
1126 bfd *abfd ATTRIBUTE_UNUSED,
1127 const char *label)
1128{
1129 if (label[0] == 'L' && label[1] == '$' )
1130 return TRUE;
1131
1132 return _bfd_elf_is_local_label_name (abfd, label);
1133}
1134
48d502e1
BS
1135extern const bfd_target bfd_elf32_bfinfdpic_vec;
1136#define IS_FDPIC(bfd) ((bfd)->xvec == &bfd_elf32_bfinfdpic_vec)
1137
1138/* An extension of the elf hash table data structure, containing some
1139 additional Blackfin-specific data. */
1140struct bfinfdpic_elf_link_hash_table
1141{
1142 struct elf_link_hash_table elf;
1143
1144 /* A pointer to the .got section. */
1145 asection *sgot;
1146 /* A pointer to the .rel.got section. */
1147 asection *sgotrel;
1148 /* A pointer to the .rofixup section. */
1149 asection *sgotfixup;
1150 /* A pointer to the .plt section. */
1151 asection *splt;
1152 /* A pointer to the .rel.plt section. */
1153 asection *spltrel;
1154 /* GOT base offset. */
1155 bfd_vma got0;
1156 /* Location of the first non-lazy PLT entry, i.e., the number of
1157 bytes taken by lazy PLT entries. */
1158 bfd_vma plt0;
1159 /* A hash table holding information about which symbols were
1160 referenced with which PIC-related relocations. */
1161 struct htab *relocs_info;
1162};
1163
1164/* Get the Blackfin ELF linker hash table from a link_info structure. */
1165
1166#define bfinfdpic_hash_table(info) \
1167 ((struct bfinfdpic_elf_link_hash_table *) ((info)->hash))
1168
1169#define bfinfdpic_got_section(info) \
1170 (bfinfdpic_hash_table (info)->sgot)
1171#define bfinfdpic_gotrel_section(info) \
1172 (bfinfdpic_hash_table (info)->sgotrel)
1173#define bfinfdpic_gotfixup_section(info) \
1174 (bfinfdpic_hash_table (info)->sgotfixup)
1175#define bfinfdpic_plt_section(info) \
1176 (bfinfdpic_hash_table (info)->splt)
1177#define bfinfdpic_pltrel_section(info) \
1178 (bfinfdpic_hash_table (info)->spltrel)
1179#define bfinfdpic_relocs_info(info) \
1180 (bfinfdpic_hash_table (info)->relocs_info)
1181#define bfinfdpic_got_initial_offset(info) \
1182 (bfinfdpic_hash_table (info)->got0)
1183#define bfinfdpic_plt_initial_offset(info) \
1184 (bfinfdpic_hash_table (info)->plt0)
1185
1186/* Create a Blackfin ELF linker hash table. */
1187
1188static struct bfd_link_hash_table *
1189bfinfdpic_elf_link_hash_table_create (bfd *abfd)
1190{
1191 struct bfinfdpic_elf_link_hash_table *ret;
1192 bfd_size_type amt = sizeof (struct bfinfdpic_elf_link_hash_table);
1193
1194 ret = bfd_zalloc (abfd, amt);
1195 if (ret == NULL)
1196 return NULL;
1197
1198 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
1199 _bfd_elf_link_hash_newfunc,
1200 sizeof (struct elf_link_hash_entry)))
1201 {
1202 free (ret);
1203 return NULL;
1204 }
1205
1206 return &ret->elf.root;
1207}
1208
1209/* Decide whether a reference to a symbol can be resolved locally or
1210 not. If the symbol is protected, we want the local address, but
1211 its function descriptor must be assigned by the dynamic linker. */
1212#define BFINFDPIC_SYM_LOCAL(INFO, H) \
1213 (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \
1214 || ! elf_hash_table (INFO)->dynamic_sections_created)
1215#define BFINFDPIC_FUNCDESC_LOCAL(INFO, H) \
1216 ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created)
1217
1218/* This structure collects information on what kind of GOT, PLT or
1219 function descriptors are required by relocations that reference a
1220 certain symbol. */
1221struct bfinfdpic_relocs_info
1222{
1223 /* The index of the symbol, as stored in the relocation r_info, if
1224 we have a local symbol; -1 otherwise. */
1225 long symndx;
1226 union
1227 {
1228 /* The input bfd in which the symbol is defined, if it's a local
1229 symbol. */
1230 bfd *abfd;
1231 /* If symndx == -1, the hash table entry corresponding to a global
1232 symbol (even if it turns out to bind locally, in which case it
1233 should ideally be replaced with section's symndx + addend). */
1234 struct elf_link_hash_entry *h;
1235 } d;
1236 /* The addend of the relocation that references the symbol. */
1237 bfd_vma addend;
1238
1239 /* The fields above are used to identify an entry. The fields below
1240 contain information on how an entry is used and, later on, which
1241 locations it was assigned. */
1242 /* The following 2 fields record whether the symbol+addend above was
1243 ever referenced with a GOT relocation. The 17M4 suffix indicates a
1244 GOT17M4 relocation; hilo is used for GOTLO/GOTHI pairs. */
1245 unsigned got17m4:1;
1246 unsigned gothilo:1;
1247 /* Whether a FUNCDESC relocation references symbol+addend. */
1248 unsigned fd:1;
1249 /* Whether a FUNCDESC_GOT relocation references symbol+addend. */
1250 unsigned fdgot17m4:1;
1251 unsigned fdgothilo:1;
1252 /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */
1253 unsigned fdgoff17m4:1;
1254 unsigned fdgoffhilo:1;
1255 /* Whether symbol+addend is referenced with GOTOFF17M4, GOTOFFLO or
1256 GOTOFFHI relocations. The addend doesn't really matter, since we
1257 envision that this will only be used to check whether the symbol
1258 is mapped to the same segment as the got. */
1259 unsigned gotoff:1;
1260 /* Whether symbol+addend is referenced by a LABEL24 relocation. */
1261 unsigned call:1;
1262 /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE
1263 relocation. */
1264 unsigned sym:1;
1265 /* Whether we need a PLT entry for a symbol. Should be implied by
1266 something like:
1267 (call && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h)) */
1268 unsigned plt:1;
1269 /* Whether a function descriptor should be created in this link unit
1270 for symbol+addend. Should be implied by something like:
1271 (plt || fdgotoff17m4 || fdgotofflohi
1272 || ((fd || fdgot17m4 || fdgothilo)
1273 && (symndx != -1 || BFINFDPIC_FUNCDESC_LOCAL (info, d.h)))) */
1274 unsigned privfd:1;
1275 /* Whether a lazy PLT entry is needed for this symbol+addend.
1276 Should be implied by something like:
1277 (privfd && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h)
1278 && ! (info->flags & DF_BIND_NOW)) */
1279 unsigned lazyplt:1;
1280 /* Whether we've already emitted GOT relocations and PLT entries as
1281 needed for this symbol. */
1282 unsigned done:1;
1283
1284 /* The number of R_byte4_data, R_BFIN_FUNCDESC and R_BFIN_FUNCDESC_VALUE
1285 relocations referencing the symbol. */
1286 unsigned relocs32, relocsfd, relocsfdv;
1287
1288 /* The number of .rofixups entries and dynamic relocations allocated
1289 for this symbol, minus any that might have already been used. */
1290 unsigned fixups, dynrelocs;
1291
1292 /* The offsets of the GOT entries assigned to symbol+addend, to the
1293 function descriptor's address, and to a function descriptor,
1294 respectively. Should be zero if unassigned. The offsets are
1295 counted from the value that will be assigned to the PIC register,
1296 not from the beginning of the .got section. */
1297 bfd_signed_vma got_entry, fdgot_entry, fd_entry;
1298 /* The offsets of the PLT entries assigned to symbol+addend,
1299 non-lazy and lazy, respectively. If unassigned, should be
1300 (bfd_vma)-1. */
1301 bfd_vma plt_entry, lzplt_entry;
1302};
1303
1304/* Compute a hash with the key fields of an bfinfdpic_relocs_info entry. */
1305static hashval_t
1306bfinfdpic_relocs_info_hash (const void *entry_)
1307{
1308 const struct bfinfdpic_relocs_info *entry = entry_;
1309
1310 return (entry->symndx == -1
17e226a8
BS
1311 ? (long) entry->d.h->root.root.hash
1312 : entry->symndx + (long) entry->d.abfd->id * 257) + entry->addend;
48d502e1
BS
1313}
1314
1315/* Test whether the key fields of two bfinfdpic_relocs_info entries are
1316 identical. */
1317static int
1318bfinfdpic_relocs_info_eq (const void *entry1, const void *entry2)
1319{
1320 const struct bfinfdpic_relocs_info *e1 = entry1;
1321 const struct bfinfdpic_relocs_info *e2 = entry2;
1322
1323 return e1->symndx == e2->symndx && e1->addend == e2->addend
1324 && (e1->symndx == -1 ? e1->d.h == e2->d.h : e1->d.abfd == e2->d.abfd);
1325}
1326
1327/* Find or create an entry in a hash table HT that matches the key
1328 fields of the given ENTRY. If it's not found, memory for a new
1329 entry is allocated in ABFD's obstack. */
1330static struct bfinfdpic_relocs_info *
1331bfinfdpic_relocs_info_find (struct htab *ht,
1332 bfd *abfd,
1333 const struct bfinfdpic_relocs_info *entry,
1334 enum insert_option insert)
1335{
1336 struct bfinfdpic_relocs_info **loc =
1337 (struct bfinfdpic_relocs_info **) htab_find_slot (ht, entry, insert);
1338
1339 if (! loc)
1340 return NULL;
1341
1342 if (*loc)
1343 return *loc;
1344
1345 *loc = bfd_zalloc (abfd, sizeof (**loc));
1346
1347 if (! *loc)
1348 return *loc;
1349
1350 (*loc)->symndx = entry->symndx;
1351 (*loc)->d = entry->d;
1352 (*loc)->addend = entry->addend;
1353 (*loc)->plt_entry = (bfd_vma)-1;
1354 (*loc)->lzplt_entry = (bfd_vma)-1;
1355
1356 return *loc;
1357}
1358
1359/* Obtain the address of the entry in HT associated with H's symbol +
1360 addend, creating a new entry if none existed. ABFD is only used
1361 for memory allocation purposes. */
1362inline static struct bfinfdpic_relocs_info *
1363bfinfdpic_relocs_info_for_global (struct htab *ht,
1364 bfd *abfd,
1365 struct elf_link_hash_entry *h,
1366 bfd_vma addend,
1367 enum insert_option insert)
1368{
1369 struct bfinfdpic_relocs_info entry;
1370
1371 entry.symndx = -1;
1372 entry.d.h = h;
1373 entry.addend = addend;
1374
1375 return bfinfdpic_relocs_info_find (ht, abfd, &entry, insert);
1376}
1377
1378/* Obtain the address of the entry in HT associated with the SYMNDXth
1379 local symbol of the input bfd ABFD, plus the addend, creating a new
1380 entry if none existed. */
1381inline static struct bfinfdpic_relocs_info *
1382bfinfdpic_relocs_info_for_local (struct htab *ht,
1383 bfd *abfd,
1384 long symndx,
1385 bfd_vma addend,
1386 enum insert_option insert)
1387{
1388 struct bfinfdpic_relocs_info entry;
1389
1390 entry.symndx = symndx;
1391 entry.d.abfd = abfd;
1392 entry.addend = addend;
1393
1394 return bfinfdpic_relocs_info_find (ht, abfd, &entry, insert);
1395}
1396
1397/* Merge fields set by check_relocs() of two entries that end up being
1398 mapped to the same (presumably global) symbol. */
1399
1400inline static void
1401bfinfdpic_pic_merge_early_relocs_info (struct bfinfdpic_relocs_info *e2,
1402 struct bfinfdpic_relocs_info const *e1)
1403{
1404 e2->got17m4 |= e1->got17m4;
1405 e2->gothilo |= e1->gothilo;
1406 e2->fd |= e1->fd;
1407 e2->fdgot17m4 |= e1->fdgot17m4;
1408 e2->fdgothilo |= e1->fdgothilo;
1409 e2->fdgoff17m4 |= e1->fdgoff17m4;
1410 e2->fdgoffhilo |= e1->fdgoffhilo;
1411 e2->gotoff |= e1->gotoff;
1412 e2->call |= e1->call;
1413 e2->sym |= e1->sym;
1414}
1415
1416/* Every block of 65535 lazy PLT entries shares a single call to the
1417 resolver, inserted in the 32768th lazy PLT entry (i.e., entry #
1418 32767, counting from 0). All other lazy PLT entries branch to it
1419 in a single instruction. */
1420
1421#define LZPLT_RESOLVER_EXTRA 10
1422#define LZPLT_NORMAL_SIZE 6
1423#define LZPLT_ENTRIES 1362
1424
1425#define BFINFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) LZPLT_NORMAL_SIZE * LZPLT_ENTRIES + LZPLT_RESOLVER_EXTRA)
1426#define BFINFDPIC_LZPLT_RESOLV_LOC (LZPLT_NORMAL_SIZE * LZPLT_ENTRIES / 2)
1427
1428/* Add a dynamic relocation to the SRELOC section. */
1429
1430inline static bfd_vma
1431_bfinfdpic_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset,
1432 int reloc_type, long dynindx, bfd_vma addend,
1433 struct bfinfdpic_relocs_info *entry)
1434{
1435 Elf_Internal_Rela outrel;
1436 bfd_vma reloc_offset;
1437
1438 outrel.r_offset = offset;
1439 outrel.r_info = ELF32_R_INFO (dynindx, reloc_type);
1440 outrel.r_addend = addend;
1441
1442 reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rel);
1443 BFD_ASSERT (reloc_offset < sreloc->size);
1444 bfd_elf32_swap_reloc_out (output_bfd, &outrel,
1445 sreloc->contents + reloc_offset);
1446 sreloc->reloc_count++;
1447
1448 /* If the entry's index is zero, this relocation was probably to a
1449 linkonce section that got discarded. We reserved a dynamic
1450 relocation, but it was for another entry than the one we got at
1451 the time of emitting the relocation. Unfortunately there's no
1452 simple way for us to catch this situation, since the relocation
1453 is cleared right before calling relocate_section, at which point
1454 we no longer know what the relocation used to point to. */
1455 if (entry->symndx)
1456 {
1457 BFD_ASSERT (entry->dynrelocs > 0);
1458 entry->dynrelocs--;
1459 }
1460
1461 return reloc_offset;
1462}
1463
1464/* Add a fixup to the ROFIXUP section. */
1465
1466static bfd_vma
1467_bfinfdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma offset,
1468 struct bfinfdpic_relocs_info *entry)
1469{
1470 bfd_vma fixup_offset;
1471
1472 if (rofixup->flags & SEC_EXCLUDE)
1473 return -1;
1474
1475 fixup_offset = rofixup->reloc_count * 4;
1476 if (rofixup->contents)
1477 {
1478 BFD_ASSERT (fixup_offset < rofixup->size);
1479 bfd_put_32 (output_bfd, offset, rofixup->contents + fixup_offset);
1480 }
1481 rofixup->reloc_count++;
1482
1483 if (entry && entry->symndx)
1484 {
1485 /* See discussion about symndx == 0 in _bfinfdpic_add_dyn_reloc
1486 above. */
1487 BFD_ASSERT (entry->fixups > 0);
1488 entry->fixups--;
1489 }
1490
1491 return fixup_offset;
1492}
1493
1494/* Find the segment number in which OSEC, and output section, is
1495 located. */
1496
1497static unsigned
1498_bfinfdpic_osec_to_segment (bfd *output_bfd, asection *osec)
1499{
2ea37f1c 1500 Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section (output_bfd, osec);
48d502e1 1501
2ea37f1c 1502 return (p != NULL) ? p - elf_tdata (output_bfd)->phdr : -1;
48d502e1
BS
1503}
1504
1505inline static bfd_boolean
1506_bfinfdpic_osec_readonly_p (bfd *output_bfd, asection *osec)
1507{
1508 unsigned seg = _bfinfdpic_osec_to_segment (output_bfd, osec);
1509
1510 return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W);
1511}
1512
1513/* Generate relocations for GOT entries, function descriptors, and
1514 code for PLT and lazy PLT entries. */
1515
1516inline static bfd_boolean
1517_bfinfdpic_emit_got_relocs_plt_entries (struct bfinfdpic_relocs_info *entry,
1518 bfd *output_bfd,
1519 struct bfd_link_info *info,
1520 asection *sec,
1521 Elf_Internal_Sym *sym,
1522 bfd_vma addend)
1523
1524{
1525 bfd_vma fd_lazy_rel_offset = (bfd_vma)-1;
1526 int dynindx = -1;
1527
1528 if (entry->done)
1529 return TRUE;
1530 entry->done = 1;
1531
1532 if (entry->got_entry || entry->fdgot_entry || entry->fd_entry)
1533 {
1534 /* If the symbol is dynamic, consider it for dynamic
1535 relocations, otherwise decay to section + offset. */
1536 if (entry->symndx == -1 && entry->d.h->dynindx != -1)
1537 dynindx = entry->d.h->dynindx;
1538 else
1539 {
1540 if (sec->output_section
1541 && ! bfd_is_abs_section (sec->output_section)
1542 && ! bfd_is_und_section (sec->output_section))
1543 dynindx = elf_section_data (sec->output_section)->dynindx;
1544 else
1545 dynindx = 0;
1546 }
1547 }
1548
1549 /* Generate relocation for GOT entry pointing to the symbol. */
1550 if (entry->got_entry)
1551 {
1552 int idx = dynindx;
1553 bfd_vma ad = addend;
1554
1555 /* If the symbol is dynamic but binds locally, use
1556 section+offset. */
1557 if (sec && (entry->symndx != -1
1558 || BFINFDPIC_SYM_LOCAL (info, entry->d.h)))
1559 {
1560 if (entry->symndx == -1)
1561 ad += entry->d.h->root.u.def.value;
1562 else
1563 ad += sym->st_value;
1564 ad += sec->output_offset;
1565 if (sec->output_section && elf_section_data (sec->output_section))
1566 idx = elf_section_data (sec->output_section)->dynindx;
1567 else
1568 idx = 0;
1569 }
1570
1571 /* If we're linking an executable at a fixed address, we can
1572 omit the dynamic relocation as long as the symbol is local to
1573 this module. */
1574 if (info->executable && !info->pie
1575 && (entry->symndx != -1
1576 || BFINFDPIC_SYM_LOCAL (info, entry->d.h)))
1577 {
1578 if (sec)
1579 ad += sec->output_section->vma;
1580 if (entry->symndx != -1
1581 || entry->d.h->root.type != bfd_link_hash_undefweak)
1582 _bfinfdpic_add_rofixup (output_bfd,
1583 bfinfdpic_gotfixup_section (info),
1584 bfinfdpic_got_section (info)->output_section
1585 ->vma
1586 + bfinfdpic_got_section (info)->output_offset
1587 + bfinfdpic_got_initial_offset (info)
1588 + entry->got_entry, entry);
1589 }
1590 else
1591 _bfinfdpic_add_dyn_reloc (output_bfd, bfinfdpic_gotrel_section (info),
1592 _bfd_elf_section_offset
1593 (output_bfd, info,
1594 bfinfdpic_got_section (info),
1595 bfinfdpic_got_initial_offset (info)
1596 + entry->got_entry)
1597 + bfinfdpic_got_section (info)
1598 ->output_section->vma
1599 + bfinfdpic_got_section (info)->output_offset,
1600 R_byte4_data, idx, ad, entry);
1601
1602 bfd_put_32 (output_bfd, ad,
1603 bfinfdpic_got_section (info)->contents
1604 + bfinfdpic_got_initial_offset (info)
1605 + entry->got_entry);
1606 }
1607
1608 /* Generate relocation for GOT entry pointing to a canonical
1609 function descriptor. */
1610 if (entry->fdgot_entry)
1611 {
1612 int reloc, idx;
1613 bfd_vma ad = 0;
1614
1615 if (! (entry->symndx == -1
1616 && entry->d.h->root.type == bfd_link_hash_undefweak
1617 && BFINFDPIC_SYM_LOCAL (info, entry->d.h)))
1618 {
1619 /* If the symbol is dynamic and there may be dynamic symbol
1620 resolution because we are, or are linked with, a shared
1621 library, emit a FUNCDESC relocation such that the dynamic
1622 linker will allocate the function descriptor. If the
1623 symbol needs a non-local function descriptor but binds
1624 locally (e.g., its visibility is protected, emit a
1625 dynamic relocation decayed to section+offset. */
1626 if (entry->symndx == -1
1627 && ! BFINFDPIC_FUNCDESC_LOCAL (info, entry->d.h)
1628 && BFINFDPIC_SYM_LOCAL (info, entry->d.h)
1629 && !(info->executable && !info->pie))
1630 {
1631 reloc = R_BFIN_FUNCDESC;
1632 idx = elf_section_data (entry->d.h->root.u.def.section
1633 ->output_section)->dynindx;
1634 ad = entry->d.h->root.u.def.section->output_offset
1635 + entry->d.h->root.u.def.value;
1636 }
1637 else if (entry->symndx == -1
1638 && ! BFINFDPIC_FUNCDESC_LOCAL (info, entry->d.h))
1639 {
1640 reloc = R_BFIN_FUNCDESC;
1641 idx = dynindx;
1642 ad = addend;
1643 if (ad)
1644 return FALSE;
1645 }
1646 else
1647 {
1648 /* Otherwise, we know we have a private function descriptor,
1649 so reference it directly. */
1650 if (elf_hash_table (info)->dynamic_sections_created)
1651 BFD_ASSERT (entry->privfd);
1652 reloc = R_byte4_data;
1653 idx = elf_section_data (bfinfdpic_got_section (info)
1654 ->output_section)->dynindx;
1655 ad = bfinfdpic_got_section (info)->output_offset
1656 + bfinfdpic_got_initial_offset (info) + entry->fd_entry;
1657 }
1658
1659 /* If there is room for dynamic symbol resolution, emit the
1660 dynamic relocation. However, if we're linking an
1661 executable at a fixed location, we won't have emitted a
1662 dynamic symbol entry for the got section, so idx will be
1663 zero, which means we can and should compute the address
1664 of the private descriptor ourselves. */
1665 if (info->executable && !info->pie
1666 && (entry->symndx != -1
1667 || BFINFDPIC_FUNCDESC_LOCAL (info, entry->d.h)))
1668 {
1669 ad += bfinfdpic_got_section (info)->output_section->vma;
1670 _bfinfdpic_add_rofixup (output_bfd,
1671 bfinfdpic_gotfixup_section (info),
1672 bfinfdpic_got_section (info)
1673 ->output_section->vma
1674 + bfinfdpic_got_section (info)
1675 ->output_offset
1676 + bfinfdpic_got_initial_offset (info)
1677 + entry->fdgot_entry, entry);
1678 }
1679 else
1680 _bfinfdpic_add_dyn_reloc (output_bfd,
1681 bfinfdpic_gotrel_section (info),
1682 _bfd_elf_section_offset
1683 (output_bfd, info,
1684 bfinfdpic_got_section (info),
1685 bfinfdpic_got_initial_offset (info)
1686 + entry->fdgot_entry)
1687 + bfinfdpic_got_section (info)
1688 ->output_section->vma
1689 + bfinfdpic_got_section (info)
1690 ->output_offset,
1691 reloc, idx, ad, entry);
1692 }
1693
1694 bfd_put_32 (output_bfd, ad,
1695 bfinfdpic_got_section (info)->contents
1696 + bfinfdpic_got_initial_offset (info)
1697 + entry->fdgot_entry);
1698 }
1699
1700 /* Generate relocation to fill in a private function descriptor in
1701 the GOT. */
1702 if (entry->fd_entry)
1703 {
1704 int idx = dynindx;
1705 bfd_vma ad = addend;
1706 bfd_vma ofst;
1707 long lowword, highword;
1708
1709 /* If the symbol is dynamic but binds locally, use
1710 section+offset. */
1711 if (sec && (entry->symndx != -1
1712 || BFINFDPIC_SYM_LOCAL (info, entry->d.h)))
1713 {
1714 if (entry->symndx == -1)
1715 ad += entry->d.h->root.u.def.value;
1716 else
1717 ad += sym->st_value;
1718 ad += sec->output_offset;
1719 if (sec->output_section && elf_section_data (sec->output_section))
1720 idx = elf_section_data (sec->output_section)->dynindx;
1721 else
1722 idx = 0;
1723 }
1724
1725 /* If we're linking an executable at a fixed address, we can
1726 omit the dynamic relocation as long as the symbol is local to
1727 this module. */
1728 if (info->executable && !info->pie
1729 && (entry->symndx != -1 || BFINFDPIC_SYM_LOCAL (info, entry->d.h)))
1730 {
1731 if (sec)
1732 ad += sec->output_section->vma;
1733 ofst = 0;
1734 if (entry->symndx != -1
1735 || entry->d.h->root.type != bfd_link_hash_undefweak)
1736 {
1737 _bfinfdpic_add_rofixup (output_bfd,
1738 bfinfdpic_gotfixup_section (info),
1739 bfinfdpic_got_section (info)
1740 ->output_section->vma
1741 + bfinfdpic_got_section (info)
1742 ->output_offset
1743 + bfinfdpic_got_initial_offset (info)
1744 + entry->fd_entry, entry);
1745 _bfinfdpic_add_rofixup (output_bfd,
1746 bfinfdpic_gotfixup_section (info),
1747 bfinfdpic_got_section (info)
1748 ->output_section->vma
1749 + bfinfdpic_got_section (info)
1750 ->output_offset
1751 + bfinfdpic_got_initial_offset (info)
1752 + entry->fd_entry + 4, entry);
1753 }
1754 }
1755 else
1756 {
1757 ofst
1758 = _bfinfdpic_add_dyn_reloc (output_bfd,
1759 entry->lazyplt
1760 ? bfinfdpic_pltrel_section (info)
1761 : bfinfdpic_gotrel_section (info),
1762 _bfd_elf_section_offset
1763 (output_bfd, info,
1764 bfinfdpic_got_section (info),
1765 bfinfdpic_got_initial_offset (info)
1766 + entry->fd_entry)
1767 + bfinfdpic_got_section (info)
1768 ->output_section->vma
1769 + bfinfdpic_got_section (info)
1770 ->output_offset,
1771 R_BFIN_FUNCDESC_VALUE, idx, ad, entry);
1772 }
1773
1774 /* If we've omitted the dynamic relocation, just emit the fixed
1775 addresses of the symbol and of the local GOT base offset. */
1776 if (info->executable && !info->pie && sec && sec->output_section)
1777 {
1778 lowword = ad;
1779 highword = bfinfdpic_got_section (info)->output_section->vma
1780 + bfinfdpic_got_section (info)->output_offset
1781 + bfinfdpic_got_initial_offset (info);
1782 }
1783 else if (entry->lazyplt)
1784 {
1785 if (ad)
1786 return FALSE;
1787
1788 fd_lazy_rel_offset = ofst;
1789
1790 /* A function descriptor used for lazy or local resolving is
1791 initialized such that its high word contains the output
1792 section index in which the PLT entries are located, and
1793 the low word contains the address of the lazy PLT entry
1794 entry point, that must be within the memory region
1795 assigned to that section. */
1796 lowword = entry->lzplt_entry + 4
1797 + bfinfdpic_plt_section (info)->output_offset
1798 + bfinfdpic_plt_section (info)->output_section->vma;
1799 highword = _bfinfdpic_osec_to_segment
1800 (output_bfd, bfinfdpic_plt_section (info)->output_section);
1801 }
1802 else
1803 {
1804 /* A function descriptor for a local function gets the index
1805 of the section. For a non-local function, it's
1806 disregarded. */
1807 lowword = ad;
1808 if (entry->symndx == -1 && entry->d.h->dynindx != -1
1809 && entry->d.h->dynindx == idx)
1810 highword = 0;
1811 else
1812 highword = _bfinfdpic_osec_to_segment
1813 (output_bfd, sec->output_section);
1814 }
1815
1816 bfd_put_32 (output_bfd, lowword,
1817 bfinfdpic_got_section (info)->contents
1818 + bfinfdpic_got_initial_offset (info)
1819 + entry->fd_entry);
1820 bfd_put_32 (output_bfd, highword,
1821 bfinfdpic_got_section (info)->contents
1822 + bfinfdpic_got_initial_offset (info)
1823 + entry->fd_entry + 4);
1824 }
1825
1826 /* Generate code for the PLT entry. */
1827 if (entry->plt_entry != (bfd_vma) -1)
1828 {
1829 bfd_byte *plt_code = bfinfdpic_plt_section (info)->contents
1830 + entry->plt_entry;
1831
1832 BFD_ASSERT (entry->fd_entry);
1833
1834 /* Figure out what kind of PLT entry we need, depending on the
1835 location of the function descriptor within the GOT. */
1836 if (entry->fd_entry >= -(1 << (18 - 1))
1837 && entry->fd_entry + 4 < (1 << (18 - 1)))
1838 {
1839 /* P1 = [P3 + fd_entry]; P3 = [P3 + fd_entry + 4] */
1840 bfd_put_32 (output_bfd,
1841 0xe519 | ((entry->fd_entry << 14) & 0xFFFF0000),
1842 plt_code);
1843 bfd_put_32 (output_bfd,
1844 0xe51b | (((entry->fd_entry + 4) << 14) & 0xFFFF0000),
1845 plt_code + 4);
1846 plt_code += 8;
1847 }
1848 else
1849 {
1850 /* P1.L = fd_entry; P1.H = fd_entry;
1851 P3 = P3 + P1;
1852 P1 = [P3];
1853 P3 = [P3 + 4]; */
1854 bfd_put_32 (output_bfd,
1855 0xe109 | (entry->fd_entry << 16),
1856 plt_code);
1857 bfd_put_32 (output_bfd,
1858 0xe149 | (entry->fd_entry & 0xFFFF0000),
1859 plt_code + 4);
1860 bfd_put_16 (output_bfd, 0x5ad9, plt_code + 8);
1861 bfd_put_16 (output_bfd, 0x9159, plt_code + 10);
1862 bfd_put_16 (output_bfd, 0xac5b, plt_code + 12);
1863 plt_code += 14;
1864 }
1865 /* JUMP (P1) */
1866 bfd_put_16 (output_bfd, 0x0051, plt_code);
1867 }
1868
1869 /* Generate code for the lazy PLT entry. */
1870 if (entry->lzplt_entry != (bfd_vma) -1)
1871 {
1872 bfd_byte *lzplt_code = bfinfdpic_plt_section (info)->contents
1873 + entry->lzplt_entry;
1874 bfd_vma resolverStub_addr;
1875
1876 bfd_put_32 (output_bfd, fd_lazy_rel_offset, lzplt_code);
1877 lzplt_code += 4;
1878
1879 resolverStub_addr = entry->lzplt_entry / BFINFDPIC_LZPLT_BLOCK_SIZE
1880 * BFINFDPIC_LZPLT_BLOCK_SIZE + BFINFDPIC_LZPLT_RESOLV_LOC;
1881 if (resolverStub_addr >= bfinfdpic_plt_initial_offset (info))
1882 resolverStub_addr = bfinfdpic_plt_initial_offset (info) - LZPLT_NORMAL_SIZE - LZPLT_RESOLVER_EXTRA;
1883
1884 if (entry->lzplt_entry == resolverStub_addr)
1885 {
1886 /* This is a lazy PLT entry that includes a resolver call.
1887 P2 = [P3];
1888 R3 = [P3 + 4];
1889 JUMP (P2); */
1890 bfd_put_32 (output_bfd,
1891 0xa05b915a,
1892 lzplt_code);
1893 bfd_put_16 (output_bfd, 0x0052, lzplt_code + 4);
1894 }
1895 else
1896 {
1897 /* JUMP.S resolverStub */
1898 bfd_put_16 (output_bfd,
1899 0x2000
1900 | (((resolverStub_addr - entry->lzplt_entry)
1901 / 2) & (((bfd_vma)1 << 12) - 1)),
1902 lzplt_code);
1903 }
1904 }
1905
1906 return TRUE;
1907}
1908
0f64bb02
CM
1909
1910/* Look through the relocs for a section during the first phase, and
1911 allocate space in the global offset table or procedure linkage
1912 table. */
1913
1914static bfd_boolean
1915bfin_check_relocs (bfd * abfd,
1916 struct bfd_link_info *info,
1917 asection *sec,
1918 const Elf_Internal_Rela *relocs)
1919{
1920 bfd *dynobj;
1921 Elf_Internal_Shdr *symtab_hdr;
1922 struct elf_link_hash_entry **sym_hashes;
1923 bfd_signed_vma *local_got_refcounts;
1924 const Elf_Internal_Rela *rel;
1925 const Elf_Internal_Rela *rel_end;
1926 asection *sgot;
1927 asection *srelgot;
1928 asection *sreloc;
1929 if (info->relocatable)
1930 return TRUE;
1931
1932 dynobj = elf_hash_table (info)->dynobj;
1933 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1934 sym_hashes = elf_sym_hashes (abfd);
1935 local_got_refcounts = elf_local_got_refcounts (abfd);
1936
1937 sgot = NULL;
1938 srelgot = NULL;
1939 sreloc = NULL;
1940
1941 rel_end = relocs + sec->reloc_count;
1942 for (rel = relocs; rel < rel_end; rel++)
1943 {
1944 unsigned long r_symndx;
1945 struct elf_link_hash_entry *h;
1946
1947 r_symndx = ELF32_R_SYM (rel->r_info);
1948 if (r_symndx < symtab_hdr->sh_info)
1949 h = NULL;
1950 else
1951 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1952
1953 switch (ELF32_R_TYPE (rel->r_info))
1954 {
1955 /* This relocation describes the C++ object vtable hierarchy.
1956 Reconstruct it for later use during GC. */
1957 case R_BFIN_GNU_VTINHERIT:
1958 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1959 return FALSE;
1960 break;
1961
1962 /* This relocation describes which C++ vtable entries
1963 are actually used. Record for later use during GC. */
1964 case R_BFIN_GNU_VTENTRY:
d17e0c6e
JB
1965 BFD_ASSERT (h != NULL);
1966 if (h != NULL
1967 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
0f64bb02
CM
1968 return FALSE;
1969 break;
1970
1971 case R_got:
1972 if (h != NULL
5592d7ec 1973 && strcmp (h->root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0)
0f64bb02
CM
1974 break;
1975 /* Fall through. */
1976
1977 if (dynobj == NULL)
1978 {
1979 /* Create the .got section. */
1980 elf_hash_table (info)->dynobj = dynobj = abfd;
1981 if (!_bfd_elf_create_got_section (dynobj, info))
1982 return FALSE;
1983 }
1984
1985 if (sgot == NULL)
1986 {
1987 sgot = bfd_get_section_by_name (dynobj, ".got");
1988 BFD_ASSERT (sgot != NULL);
1989 }
1990
1991 if (srelgot == NULL && (h != NULL || info->shared))
1992 {
1993 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1994 if (srelgot == NULL)
1995 {
117ed4f8
AM
1996 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1997 | SEC_IN_MEMORY | SEC_LINKER_CREATED
1998 | SEC_READONLY);
1999 srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
2000 flags);
0f64bb02 2001 if (srelgot == NULL
0f64bb02
CM
2002 || !bfd_set_section_alignment (dynobj, srelgot, 2))
2003 return FALSE;
2004 }
2005 }
2006
2007 if (h != NULL)
2008 {
2009 if (h->got.refcount == 0)
2010 {
2011 /* Make sure this symbol is output as a dynamic symbol. */
2012 if (h->dynindx == -1 && !h->forced_local)
2013 {
2014 if (!bfd_elf_link_record_dynamic_symbol (info, h))
2015 return FALSE;
2016 }
2017
2018 /* Allocate space in the .got section. */
2019 sgot->size += 4;
2020 /* Allocate relocation space. */
2021 srelgot->size += sizeof (Elf32_External_Rela);
2022 }
2023 h->got.refcount++;
2024 }
2025 else
2026 {
2027 /* This is a global offset table entry for a local symbol. */
2028 if (local_got_refcounts == NULL)
2029 {
2030 bfd_size_type size;
2031
2032 size = symtab_hdr->sh_info;
2033 size *= sizeof (bfd_signed_vma);
2034 local_got_refcounts = ((bfd_signed_vma *)
2035 bfd_zalloc (abfd, size));
2036 if (local_got_refcounts == NULL)
2037 return FALSE;
2038 elf_local_got_refcounts (abfd) = local_got_refcounts;
2039 }
2040 if (local_got_refcounts[r_symndx] == 0)
2041 {
2042 sgot->size += 4;
2043 if (info->shared)
2044 {
2045 /* If we are generating a shared object, we need to
2046 output a R_68K_RELATIVE reloc so that the dynamic
2047 linker can adjust this GOT entry. */
2048 srelgot->size += sizeof (Elf32_External_Rela);
2049 }
2050 }
2051 local_got_refcounts[r_symndx]++;
2052 }
2053 break;
2054
2055 default:
2056 break;
2057 }
2058 }
2059
2060 return TRUE;
2061}
2062
2063static enum elf_reloc_type_class
2064elf32_bfin_reloc_type_class (const Elf_Internal_Rela * rela)
2065{
2066 switch ((int) ELF32_R_TYPE (rela->r_info))
2067 {
2068 default:
2069 return reloc_class_normal;
2070 }
2071}
48d502e1
BS
2072\f
2073/* Relocate an Blackfin ELF section.
2074
2075 The RELOCATE_SECTION function is called by the new ELF backend linker
2076 to handle the relocations for a section.
2077
2078 The relocs are always passed as Rela structures; if the section
2079 actually uses Rel structures, the r_addend field will always be
2080 zero.
2081
2082 This function is responsible for adjusting the section contents as
2083 necessary, and (if using Rela relocs and generating a relocatable
2084 output file) adjusting the reloc addend as necessary.
2085
2086 This function does not have to worry about setting the reloc
2087 address or the reloc symbol index.
2088
2089 LOCAL_SYMS is a pointer to the swapped in local symbols.
2090
2091 LOCAL_SECTIONS is an array giving the section in the input file
2092 corresponding to the st_shndx field of each local symbol.
2093
2094 The global hash table entry for the global symbols can be found
2095 via elf_sym_hashes (input_bfd).
2096
2097 When generating relocatable output, this function must handle
2098 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2099 going to be the section symbol corresponding to the output
2100 section, which means that the addend must be adjusted
2101 accordingly. */
f4707595 2102
0f64bb02 2103static bfd_boolean
48d502e1
BS
2104bfinfdpic_relocate_section (bfd * output_bfd,
2105 struct bfd_link_info *info,
2106 bfd * input_bfd,
2107 asection * input_section,
2108 bfd_byte * contents,
2109 Elf_Internal_Rela * relocs,
2110 Elf_Internal_Sym * local_syms,
2111 asection ** local_sections)
0f64bb02 2112{
0f64bb02
CM
2113 Elf_Internal_Shdr *symtab_hdr;
2114 struct elf_link_hash_entry **sym_hashes;
0f64bb02
CM
2115 Elf_Internal_Rela *rel;
2116 Elf_Internal_Rela *relend;
48d502e1
BS
2117 unsigned isec_segment, got_segment, plt_segment,
2118 check_segment[2];
2119 int silence_segment_error = !(info->shared || info->pie);
0f64bb02 2120
48d502e1 2121 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
0f64bb02 2122 sym_hashes = elf_sym_hashes (input_bfd);
48d502e1
BS
2123 relend = relocs + input_section->reloc_count;
2124
2125 isec_segment = _bfinfdpic_osec_to_segment (output_bfd,
2126 input_section->output_section);
2127 if (IS_FDPIC (output_bfd) && bfinfdpic_got_section (info))
2128 got_segment = _bfinfdpic_osec_to_segment (output_bfd,
2129 bfinfdpic_got_section (info)
2130 ->output_section);
2131 else
2132 got_segment = -1;
2133 if (IS_FDPIC (output_bfd) && elf_hash_table (info)->dynamic_sections_created)
2134 plt_segment = _bfinfdpic_osec_to_segment (output_bfd,
2135 bfinfdpic_plt_section (info)
2136 ->output_section);
2137 else
2138 plt_segment = -1;
0f64bb02 2139
48d502e1 2140 for (rel = relocs; rel < relend; rel ++)
0f64bb02 2141 {
0f64bb02
CM
2142 reloc_howto_type *howto;
2143 unsigned long r_symndx;
0f64bb02
CM
2144 Elf_Internal_Sym *sym;
2145 asection *sec;
48d502e1
BS
2146 struct elf_link_hash_entry *h;
2147 bfd_vma relocation;
0f64bb02 2148 bfd_reloc_status_type r;
48d502e1
BS
2149 const char * name = NULL;
2150 int r_type;
2151 asection *osec;
2152 struct bfinfdpic_relocs_info *picrel;
2153 bfd_vma orig_addend = rel->r_addend;
0f64bb02
CM
2154
2155 r_type = ELF32_R_TYPE (rel->r_info);
0f64bb02 2156
48d502e1
BS
2157 if (r_type == R_BFIN_GNU_VTINHERIT
2158 || r_type == R_BFIN_GNU_VTENTRY)
0f64bb02
CM
2159 continue;
2160
48d502e1 2161 r_symndx = ELF32_R_SYM (rel->r_info);
0f64bb02
CM
2162 howto = bfin_reloc_type_lookup (input_bfd, r_type);
2163 if (howto == NULL)
2164 {
2165 bfd_set_error (bfd_error_bad_value);
2166 return FALSE;
2167 }
0f64bb02 2168
48d502e1
BS
2169 h = NULL;
2170 sym = NULL;
2171 sec = NULL;
0f64bb02
CM
2172
2173 if (r_symndx < symtab_hdr->sh_info)
2174 {
2175 sym = local_syms + r_symndx;
48d502e1 2176 osec = sec = local_sections [r_symndx];
0f64bb02 2177 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
48d502e1
BS
2178
2179 name = bfd_elf_string_from_elf_section
2180 (input_bfd, symtab_hdr->sh_link, sym->st_name);
2181 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
0f64bb02
CM
2182 }
2183 else
2184 {
ab96bf03
AM
2185 bfd_boolean warned;
2186 bfd_boolean unresolved_reloc;
0f64bb02 2187
ab96bf03
AM
2188 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2189 r_symndx, symtab_hdr, sym_hashes,
2190 h, sec, relocation,
2191 unresolved_reloc, warned);
2192 osec = sec;
2193 }
f4707595 2194
ab96bf03
AM
2195 if (sec != NULL && elf_discarded_section (sec))
2196 {
2197 /* For relocs against symbols from removed linkonce sections,
2198 or sections discarded by a linker script, we just want the
2199 section contents zeroed. Avoid any special processing. */
2200 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
2201 rel->r_info = 0;
2202 rel->r_addend = 0;
2203 continue;
2204 }
48d502e1 2205
ab96bf03
AM
2206 if (info->relocatable)
2207 continue;
2208
2209 if (h != NULL
2210 && (h->root.type == bfd_link_hash_defined
2211 || h->root.type == bfd_link_hash_defweak)
2212 && !BFINFDPIC_SYM_LOCAL (info, h))
2213 {
2214 osec = sec = NULL;
2215 relocation = 0;
48d502e1
BS
2216 }
2217
2218 switch (r_type)
0f64bb02 2219 {
48d502e1
BS
2220 case R_pcrel24:
2221 case R_pcrel24_jump_l:
2222 case R_byte4_data:
2223 if (! IS_FDPIC (output_bfd))
2224 goto non_fdpic;
2225
2226 case R_BFIN_GOT17M4:
2227 case R_BFIN_GOTHI:
2228 case R_BFIN_GOTLO:
2229 case R_BFIN_FUNCDESC_GOT17M4:
2230 case R_BFIN_FUNCDESC_GOTHI:
2231 case R_BFIN_FUNCDESC_GOTLO:
2232 case R_BFIN_GOTOFF17M4:
2233 case R_BFIN_GOTOFFHI:
2234 case R_BFIN_GOTOFFLO:
2235 case R_BFIN_FUNCDESC_GOTOFF17M4:
2236 case R_BFIN_FUNCDESC_GOTOFFHI:
2237 case R_BFIN_FUNCDESC_GOTOFFLO:
2238 case R_BFIN_FUNCDESC:
2239 case R_BFIN_FUNCDESC_VALUE:
2240 if (h != NULL)
2241 picrel = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info
2242 (info), input_bfd, h,
2243 orig_addend, INSERT);
2244 else
2245 /* In order to find the entry we created before, we must
2246 use the original addend, not the one that may have been
2247 modified by _bfd_elf_rela_local_sym(). */
2248 picrel = bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info
2249 (info), input_bfd, r_symndx,
2250 orig_addend, INSERT);
2251 if (! picrel)
2252 return FALSE;
0f64bb02 2253
48d502e1
BS
2254 if (!_bfinfdpic_emit_got_relocs_plt_entries (picrel, output_bfd, info,
2255 osec, sym,
2256 rel->r_addend))
2257 {
2258 (*_bfd_error_handler)
2259 (_("%B: relocation at `%A+0x%x' references symbol `%s' with nonzero addend"),
2260 input_bfd, input_section, rel->r_offset, name);
2261 return FALSE;
2262
2263 }
2264
2265 break;
2266
2267 default:
2268 non_fdpic:
2269 picrel = NULL;
2270 if (h && ! BFINFDPIC_SYM_LOCAL (info, h))
2271 {
2272 info->callbacks->warning
2273 (info, _("relocation references symbol not defined in the module"),
2274 name, input_bfd, input_section, rel->r_offset);
2275 return FALSE;
2276 }
2277 break;
2278 }
2279
2280 switch (r_type)
2281 {
2282 case R_pcrel24:
2283 case R_pcrel24_jump_l:
2284 check_segment[0] = isec_segment;
2285 if (! IS_FDPIC (output_bfd))
2286 check_segment[1] = isec_segment;
2287 else if (picrel->plt)
2288 {
2289 relocation = bfinfdpic_plt_section (info)->output_section->vma
2290 + bfinfdpic_plt_section (info)->output_offset
2291 + picrel->plt_entry;
2292 check_segment[1] = plt_segment;
2293 }
2294 /* We don't want to warn on calls to undefined weak symbols,
2295 as calls to them must be protected by non-NULL tests
2296 anyway, and unprotected calls would invoke undefined
2297 behavior. */
2298 else if (picrel->symndx == -1
2299 && picrel->d.h->root.type == bfd_link_hash_undefweak)
2300 check_segment[1] = check_segment[0];
2301 else
2302 check_segment[1] = sec
2303 ? _bfinfdpic_osec_to_segment (output_bfd, sec->output_section)
2304 : (unsigned)-1;
2305 break;
2306
2307 case R_BFIN_GOT17M4:
2308 case R_BFIN_GOTHI:
2309 case R_BFIN_GOTLO:
2310 relocation = picrel->got_entry;
2311 check_segment[0] = check_segment[1] = got_segment;
2312 break;
0f64bb02 2313
48d502e1
BS
2314 case R_BFIN_FUNCDESC_GOT17M4:
2315 case R_BFIN_FUNCDESC_GOTHI:
2316 case R_BFIN_FUNCDESC_GOTLO:
2317 relocation = picrel->fdgot_entry;
2318 check_segment[0] = check_segment[1] = got_segment;
2319 break;
2320
2321 case R_BFIN_GOTOFFHI:
2322 case R_BFIN_GOTOFF17M4:
2323 case R_BFIN_GOTOFFLO:
2324 relocation -= bfinfdpic_got_section (info)->output_section->vma
2325 + bfinfdpic_got_section (info)->output_offset
2326 + bfinfdpic_got_initial_offset (info);
2327 check_segment[0] = got_segment;
2328 check_segment[1] = sec
2329 ? _bfinfdpic_osec_to_segment (output_bfd, sec->output_section)
2330 : (unsigned)-1;
2331 break;
2332
2333 case R_BFIN_FUNCDESC_GOTOFF17M4:
2334 case R_BFIN_FUNCDESC_GOTOFFHI:
2335 case R_BFIN_FUNCDESC_GOTOFFLO:
2336 relocation = picrel->fd_entry;
2337 check_segment[0] = check_segment[1] = got_segment;
2338 break;
2339
2340 case R_BFIN_FUNCDESC:
0f64bb02 2341 {
48d502e1
BS
2342 int dynindx;
2343 bfd_vma addend = rel->r_addend;
0f64bb02 2344
48d502e1
BS
2345 if (! (h && h->root.type == bfd_link_hash_undefweak
2346 && BFINFDPIC_SYM_LOCAL (info, h)))
0f64bb02 2347 {
48d502e1
BS
2348 /* If the symbol is dynamic and there may be dynamic
2349 symbol resolution because we are or are linked with a
2350 shared library, emit a FUNCDESC relocation such that
2351 the dynamic linker will allocate the function
2352 descriptor. If the symbol needs a non-local function
2353 descriptor but binds locally (e.g., its visibility is
2354 protected, emit a dynamic relocation decayed to
2355 section+offset. */
2356 if (h && ! BFINFDPIC_FUNCDESC_LOCAL (info, h)
2357 && BFINFDPIC_SYM_LOCAL (info, h)
2358 && !(info->executable && !info->pie))
2359 {
2360 dynindx = elf_section_data (h->root.u.def.section
2361 ->output_section)->dynindx;
2362 addend += h->root.u.def.section->output_offset
2363 + h->root.u.def.value;
2364 }
2365 else if (h && ! BFINFDPIC_FUNCDESC_LOCAL (info, h))
2366 {
2367 if (addend)
2368 {
2369 info->callbacks->warning
2370 (info, _("R_BFIN_FUNCDESC references dynamic symbol with nonzero addend"),
2371 name, input_bfd, input_section, rel->r_offset);
2372 return FALSE;
2373 }
2374 dynindx = h->dynindx;
2375 }
2376 else
2377 {
2378 /* Otherwise, we know we have a private function
2379 descriptor, so reference it directly. */
2380 BFD_ASSERT (picrel->privfd);
2381 r_type = R_byte4_data;
2382 dynindx = elf_section_data (bfinfdpic_got_section (info)
2383 ->output_section)->dynindx;
2384 addend = bfinfdpic_got_section (info)->output_offset
2385 + bfinfdpic_got_initial_offset (info)
2386 + picrel->fd_entry;
2387 }
2388
2389 /* If there is room for dynamic symbol resolution, emit
2390 the dynamic relocation. However, if we're linking an
2391 executable at a fixed location, we won't have emitted a
2392 dynamic symbol entry for the got section, so idx will
2393 be zero, which means we can and should compute the
2394 address of the private descriptor ourselves. */
2395 if (info->executable && !info->pie
2396 && (!h || BFINFDPIC_FUNCDESC_LOCAL (info, h)))
2397 {
2398 addend += bfinfdpic_got_section (info)->output_section->vma;
2399 if ((bfd_get_section_flags (output_bfd,
2400 input_section->output_section)
2401 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
2402 {
2403 if (_bfinfdpic_osec_readonly_p (output_bfd,
2404 input_section
2405 ->output_section))
2406 {
2407 info->callbacks->warning
2408 (info,
2409 _("cannot emit fixups in read-only section"),
2410 name, input_bfd, input_section, rel->r_offset);
2411 return FALSE;
2412 }
2413 _bfinfdpic_add_rofixup (output_bfd,
2414 bfinfdpic_gotfixup_section
2415 (info),
2416 _bfd_elf_section_offset
2417 (output_bfd, info,
2418 input_section, rel->r_offset)
2419 + input_section
2420 ->output_section->vma
2421 + input_section->output_offset,
2422 picrel);
2423 }
2424 }
2425 else if ((bfd_get_section_flags (output_bfd,
2426 input_section->output_section)
2427 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
2428 {
8aafe8b4
JZ
2429 bfd_vma offset;
2430
48d502e1
BS
2431 if (_bfinfdpic_osec_readonly_p (output_bfd,
2432 input_section
2433 ->output_section))
2434 {
2435 info->callbacks->warning
2436 (info,
2437 _("cannot emit dynamic relocations in read-only section"),
2438 name, input_bfd, input_section, rel->r_offset);
2439 return FALSE;
2440 }
8aafe8b4
JZ
2441 offset = _bfd_elf_section_offset (output_bfd, info,
2442 input_section, rel->r_offset);
2443 /* Only output a reloc for a not deleted entry. */
2444 if (offset >= (bfd_vma) -2)
2445 _bfinfdpic_add_dyn_reloc (output_bfd,
2446 bfinfdpic_gotrel_section (info),
2447 0,
2448 R_unused0,
2449 dynindx, addend, picrel);
2450 else
2451 _bfinfdpic_add_dyn_reloc (output_bfd,
2452 bfinfdpic_gotrel_section (info),
2453 offset + input_section
2454 ->output_section->vma
2455 + input_section->output_offset,
2456 r_type,
2457 dynindx, addend, picrel);
48d502e1
BS
2458 }
2459 else
2460 addend += bfinfdpic_got_section (info)->output_section->vma;
0f64bb02
CM
2461 }
2462
48d502e1
BS
2463 /* We want the addend in-place because dynamic
2464 relocations are REL. Setting relocation to it should
2465 arrange for it to be installed. */
2466 relocation = addend - rel->r_addend;
2467 }
2468 check_segment[0] = check_segment[1] = got_segment;
2469 break;
0f64bb02 2470
48d502e1
BS
2471 case R_byte4_data:
2472 if (! IS_FDPIC (output_bfd))
2473 {
2474 check_segment[0] = check_segment[1] = -1;
2475 break;
2476 }
2477 /* Fall through. */
2478 case R_BFIN_FUNCDESC_VALUE:
2479 {
2480 int dynindx;
2481 bfd_vma addend = rel->r_addend;
f4707595 2482
48d502e1
BS
2483 /* If the symbol is dynamic but binds locally, use
2484 section+offset. */
2485 if (h && ! BFINFDPIC_SYM_LOCAL (info, h))
2486 {
2487 if (addend && r_type == R_BFIN_FUNCDESC_VALUE)
0f64bb02 2488 {
48d502e1
BS
2489 info->callbacks->warning
2490 (info, _("R_BFIN_FUNCDESC_VALUE references dynamic symbol with nonzero addend"),
2491 name, input_bfd, input_section, rel->r_offset);
2492 return FALSE;
2493 }
2494 dynindx = h->dynindx;
2495 }
2496 else
2497 {
2498 if (h)
2499 addend += h->root.u.def.value;
2500 else
2501 addend += sym->st_value;
2502 if (osec)
2503 addend += osec->output_offset;
2504 if (osec && osec->output_section
2505 && ! bfd_is_abs_section (osec->output_section)
2506 && ! bfd_is_und_section (osec->output_section))
2507 dynindx = elf_section_data (osec->output_section)->dynindx;
2508 else
2509 dynindx = 0;
2510 }
0f64bb02 2511
48d502e1
BS
2512 /* If we're linking an executable at a fixed address, we
2513 can omit the dynamic relocation as long as the symbol
2514 is defined in the current link unit (which is implied
2515 by its output section not being NULL). */
2516 if (info->executable && !info->pie
2517 && (!h || BFINFDPIC_SYM_LOCAL (info, h)))
2518 {
2519 if (osec)
2520 addend += osec->output_section->vma;
2521 if (IS_FDPIC (input_bfd)
2522 && (bfd_get_section_flags (output_bfd,
2523 input_section->output_section)
2524 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
2525 {
2526 if (_bfinfdpic_osec_readonly_p (output_bfd,
2527 input_section
2528 ->output_section))
0f64bb02 2529 {
48d502e1
BS
2530 info->callbacks->warning
2531 (info,
2532 _("cannot emit fixups in read-only section"),
2533 name, input_bfd, input_section, rel->r_offset);
2534 return FALSE;
2535 }
2536 if (!h || h->root.type != bfd_link_hash_undefweak)
2537 {
2538 _bfinfdpic_add_rofixup (output_bfd,
2539 bfinfdpic_gotfixup_section
2540 (info),
2541 _bfd_elf_section_offset
2542 (output_bfd, info,
2543 input_section, rel->r_offset)
2544 + input_section
2545 ->output_section->vma
2546 + input_section->output_offset,
2547 picrel);
2548 if (r_type == R_BFIN_FUNCDESC_VALUE)
2549 _bfinfdpic_add_rofixup
2550 (output_bfd,
2551 bfinfdpic_gotfixup_section (info),
2552 _bfd_elf_section_offset
2553 (output_bfd, info,
2554 input_section, rel->r_offset)
2555 + input_section->output_section->vma
2556 + input_section->output_offset + 4, picrel);
0f64bb02
CM
2557 }
2558 }
0f64bb02
CM
2559 }
2560 else
2561 {
48d502e1
BS
2562 if ((bfd_get_section_flags (output_bfd,
2563 input_section->output_section)
2564 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
0f64bb02 2565 {
48d502e1
BS
2566 if (_bfinfdpic_osec_readonly_p (output_bfd,
2567 input_section
2568 ->output_section))
0f64bb02 2569 {
48d502e1
BS
2570 info->callbacks->warning
2571 (info,
2572 _("cannot emit dynamic relocations in read-only section"),
2573 name, input_bfd, input_section, rel->r_offset);
2574 return FALSE;
0f64bb02 2575 }
48d502e1
BS
2576 _bfinfdpic_add_dyn_reloc (output_bfd,
2577 bfinfdpic_gotrel_section (info),
2578 _bfd_elf_section_offset
2579 (output_bfd, info,
2580 input_section, rel->r_offset)
2581 + input_section
2582 ->output_section->vma
2583 + input_section->output_offset,
2584 r_type, dynindx, addend, picrel);
0f64bb02 2585 }
48d502e1
BS
2586 else if (osec)
2587 addend += osec->output_section->vma;
2588 /* We want the addend in-place because dynamic
2589 relocations are REL. Setting relocation to it
2590 should arrange for it to be installed. */
2591 relocation = addend - rel->r_addend;
0f64bb02
CM
2592 }
2593
48d502e1
BS
2594 if (r_type == R_BFIN_FUNCDESC_VALUE)
2595 {
2596 /* If we've omitted the dynamic relocation, just emit
2597 the fixed addresses of the symbol and of the local
2598 GOT base offset. */
2599 if (info->executable && !info->pie
2600 && (!h || BFINFDPIC_SYM_LOCAL (info, h)))
2601 bfd_put_32 (output_bfd,
2602 bfinfdpic_got_section (info)->output_section->vma
2603 + bfinfdpic_got_section (info)->output_offset
2604 + bfinfdpic_got_initial_offset (info),
2605 contents + rel->r_offset + 4);
2606 else
2607 /* A function descriptor used for lazy or local
2608 resolving is initialized such that its high word
2609 contains the output section index in which the
2610 PLT entries are located, and the low word
2611 contains the offset of the lazy PLT entry entry
2612 point into that section. */
2613 bfd_put_32 (output_bfd,
2614 h && ! BFINFDPIC_SYM_LOCAL (info, h)
2615 ? 0
2616 : _bfinfdpic_osec_to_segment (output_bfd,
2617 sec
2618 ->output_section),
2619 contents + rel->r_offset + 4);
2620 }
0f64bb02 2621 }
48d502e1
BS
2622 check_segment[0] = check_segment[1] = got_segment;
2623 break;
f4707595 2624
48d502e1
BS
2625 default:
2626 check_segment[0] = isec_segment;
2627 check_segment[1] = sec
2628 ? _bfinfdpic_osec_to_segment (output_bfd, sec->output_section)
2629 : (unsigned)-1;
2630 break;
2631 }
f4707595 2632
48d502e1
BS
2633 if (check_segment[0] != check_segment[1] && IS_FDPIC (output_bfd))
2634 {
2635#if 1 /* If you take this out, remove the #error from fdpic-static-6.d
2636 in the ld testsuite. */
2637 /* This helps catch problems in GCC while we can't do more
2638 than static linking. The idea is to test whether the
2639 input file basename is crt0.o only once. */
2640 if (silence_segment_error == 1)
2641 silence_segment_error =
2642 (strlen (input_bfd->filename) == 6
2643 && strcmp (input_bfd->filename, "crt0.o") == 0)
2644 || (strlen (input_bfd->filename) > 6
2645 && strcmp (input_bfd->filename
2646 + strlen (input_bfd->filename) - 7,
2647 "/crt0.o") == 0)
2648 ? -1 : 0;
2649#endif
2650 if (!silence_segment_error
2651 /* We don't want duplicate errors for undefined
2652 symbols. */
2653 && !(picrel && picrel->symndx == -1
2654 && picrel->d.h->root.type == bfd_link_hash_undefined))
2655 info->callbacks->warning
2656 (info,
2657 (info->shared || info->pie)
2658 ? _("relocations between different segments are not supported")
2659 : _("warning: relocation references a different segment"),
2660 name, input_bfd, input_section, rel->r_offset);
2661 if (!silence_segment_error && (info->shared || info->pie))
2662 return FALSE;
2663 elf_elfheader (output_bfd)->e_flags |= EF_BFIN_PIC;
2664 }
f4707595 2665
48d502e1
BS
2666 switch (r_type)
2667 {
2668 case R_BFIN_GOTOFFHI:
2669 /* We need the addend to be applied before we shift the
2670 value right. */
2671 relocation += rel->r_addend;
2672 /* Fall through. */
2673 case R_BFIN_GOTHI:
2674 case R_BFIN_FUNCDESC_GOTHI:
2675 case R_BFIN_FUNCDESC_GOTOFFHI:
2676 relocation >>= 16;
2677 /* Fall through. */
f4707595 2678
48d502e1
BS
2679 case R_BFIN_GOTLO:
2680 case R_BFIN_FUNCDESC_GOTLO:
2681 case R_BFIN_GOTOFFLO:
2682 case R_BFIN_FUNCDESC_GOTOFFLO:
2683 relocation &= 0xffff;
2684 break;
f4707595 2685
48d502e1
BS
2686 default:
2687 break;
2688 }
f4707595 2689
48d502e1
BS
2690 switch (r_type)
2691 {
2692 case R_pcrel24:
2693 case R_pcrel24_jump_l:
2694 if (! IS_FDPIC (output_bfd) || ! picrel->plt)
2695 break;
2696 /* Fall through. */
f4707595 2697
48d502e1
BS
2698 /* When referencing a GOT entry, a function descriptor or a
2699 PLT, we don't want the addend to apply to the reference,
2700 but rather to the referenced symbol. The actual entry
2701 will have already been created taking the addend into
2702 account, so cancel it out here. */
2703 case R_BFIN_GOT17M4:
2704 case R_BFIN_GOTHI:
2705 case R_BFIN_GOTLO:
2706 case R_BFIN_FUNCDESC_GOT17M4:
2707 case R_BFIN_FUNCDESC_GOTHI:
2708 case R_BFIN_FUNCDESC_GOTLO:
2709 case R_BFIN_FUNCDESC_GOTOFF17M4:
2710 case R_BFIN_FUNCDESC_GOTOFFHI:
2711 case R_BFIN_FUNCDESC_GOTOFFLO:
2712 /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF17M4
2713 here, since we do want to apply the addend to the others.
2714 Note that we've applied the addend to GOTOFFHI before we
2715 shifted it right. */
2716 case R_BFIN_GOTOFFHI:
2717 relocation -= rel->r_addend;
0f64bb02
CM
2718 break;
2719
2720 default:
0f64bb02
CM
2721 break;
2722 }
2723
48d502e1
BS
2724 if (r_type == R_pcrel24
2725 || r_type == R_pcrel24_jump_l)
0f64bb02 2726 {
48d502e1
BS
2727 bfd_vma x;
2728 bfd_vma address = rel->r_offset;
2729
2730 relocation += rel->r_addend;
2731
2732 /* Perform usual pc-relative correction. */
2733 relocation -= input_section->output_section->vma + input_section->output_offset;
2734 relocation -= address;
2735
2736 /* We are getting reloc_entry->address 2 byte off from
2737 the start of instruction. Assuming absolute postion
2738 of the reloc data. But, following code had been written assuming
2739 reloc address is starting at begining of instruction.
2740 To compensate that I have increased the value of
2741 relocation by 1 (effectively 2) and used the addr -2 instead of addr. */
2742
2743 relocation += 2;
2744 address -= 2;
2745
2746 relocation >>= 1;
2747
2748 x = bfd_get_16 (input_bfd, contents + address);
2749 x = (x & 0xff00) | ((relocation >> 16) & 0xff);
2750 bfd_put_16 (input_bfd, x, contents + address);
2751
2752 x = bfd_get_16 (input_bfd, contents + address + 2);
2753 x = relocation & 0xFFFF;
2754 bfd_put_16 (input_bfd, x, contents + address + 2);
2755 r = bfd_reloc_ok;
0f64bb02 2756 }
48d502e1
BS
2757 else
2758 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
2759 contents, rel->r_offset,
2760 relocation, rel->r_addend);
0f64bb02 2761
0f64bb02
CM
2762 if (r != bfd_reloc_ok)
2763 {
48d502e1 2764 const char * msg = (const char *) NULL;
0f64bb02 2765
48d502e1 2766 switch (r)
0f64bb02 2767 {
48d502e1
BS
2768 case bfd_reloc_overflow:
2769 r = info->callbacks->reloc_overflow
2770 (info, (h ? &h->root : NULL), name, howto->name,
2771 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
2772 break;
2773
2774 case bfd_reloc_undefined:
2775 r = info->callbacks->undefined_symbol
2776 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
2777 break;
2778
2779 case bfd_reloc_outofrange:
2780 msg = _("internal error: out of range error");
2781 break;
2782
2783 case bfd_reloc_notsupported:
2784 msg = _("internal error: unsupported relocation error");
2785 break;
2786
2787 case bfd_reloc_dangerous:
2788 msg = _("internal error: dangerous relocation");
2789 break;
2790
2791 default:
2792 msg = _("internal error: unknown error");
2793 break;
2794 }
2795
2796 if (msg)
2797 r = info->callbacks->warning
2798 (info, msg, name, input_bfd, input_section, rel->r_offset);
2799
2800 if (! r)
2801 return FALSE;
2802 }
2803 }
2804
2805 return TRUE;
2806}
2807
2808static bfd_boolean
2809bfin_relocate_section (bfd * output_bfd,
2810 struct bfd_link_info *info,
2811 bfd * input_bfd,
2812 asection * input_section,
2813 bfd_byte * contents,
2814 Elf_Internal_Rela * relocs,
2815 Elf_Internal_Sym * local_syms,
2816 asection ** local_sections)
2817{
2818 bfd *dynobj;
2819 Elf_Internal_Shdr *symtab_hdr;
2820 struct elf_link_hash_entry **sym_hashes;
2821 bfd_vma *local_got_offsets;
2822 asection *sgot;
2823 asection *sreloc;
2824 Elf_Internal_Rela *rel;
2825 Elf_Internal_Rela *relend;
2826 int i = 0;
2827
48d502e1
BS
2828 dynobj = elf_hash_table (info)->dynobj;
2829 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2830 sym_hashes = elf_sym_hashes (input_bfd);
2831 local_got_offsets = elf_local_got_offsets (input_bfd);
2832
2833 sgot = NULL;
2834 sreloc = NULL;
2835
2836 rel = relocs;
2837 relend = relocs + input_section->reloc_count;
2838 for (; rel < relend; rel++, i++)
2839 {
2840 int r_type;
2841 reloc_howto_type *howto;
2842 unsigned long r_symndx;
2843 struct elf_link_hash_entry *h;
2844 Elf_Internal_Sym *sym;
2845 asection *sec;
2846 bfd_vma relocation = 0;
2847 bfd_boolean unresolved_reloc;
2848 bfd_reloc_status_type r;
2849 bfd_vma address;
2850
2851 r_type = ELF32_R_TYPE (rel->r_info);
2852 if (r_type < 0 || r_type >= 243)
2853 {
2854 bfd_set_error (bfd_error_bad_value);
2855 return FALSE;
2856 }
2857
2858 if (r_type == R_BFIN_GNU_VTENTRY
2859 || r_type == R_BFIN_GNU_VTINHERIT)
2860 continue;
2861
2862 howto = bfin_reloc_type_lookup (input_bfd, r_type);
2863 if (howto == NULL)
2864 {
2865 bfd_set_error (bfd_error_bad_value);
2866 return FALSE;
2867 }
2868 r_symndx = ELF32_R_SYM (rel->r_info);
2869
2870 h = NULL;
2871 sym = NULL;
2872 sec = NULL;
2873 unresolved_reloc = FALSE;
2874
2875 if (r_symndx < symtab_hdr->sh_info)
2876 {
2877 sym = local_syms + r_symndx;
2878 sec = local_sections[r_symndx];
2879 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2880 }
2881 else
2882 {
2883 bfd_boolean warned;
ab96bf03 2884
48d502e1
BS
2885 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2886 r_symndx, symtab_hdr, sym_hashes,
2887 h, sec, relocation,
2888 unresolved_reloc, warned);
2889 }
2890
ab96bf03
AM
2891 if (sec != NULL && elf_discarded_section (sec))
2892 {
2893 /* For relocs against symbols from removed linkonce sections,
2894 or sections discarded by a linker script, we just want the
2895 section contents zeroed. Avoid any special processing. */
2896 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
2897 rel->r_info = 0;
2898 rel->r_addend = 0;
2899 continue;
2900 }
2901
2902 if (info->relocatable)
2903 continue;
2904
48d502e1
BS
2905 address = rel->r_offset;
2906
2907 /* Then, process normally. */
2908 switch (r_type)
2909 {
2910 case R_BFIN_GNU_VTINHERIT:
2911 case R_BFIN_GNU_VTENTRY:
2912 return bfd_reloc_ok;
2913
2914 case R_got:
2915 /* Relocation is to the address of the entry for this symbol
2916 in the global offset table. */
2917 if (h != NULL
5592d7ec 2918 && strcmp (h->root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0)
48d502e1
BS
2919 goto do_default;
2920 /* Fall through. */
2921 /* Relocation is the offset of the entry for this symbol in
2922 the global offset table. */
2923
2924 {
2925 bfd_vma off;
2926
7a84e3da
BS
2927 if (dynobj == NULL)
2928 {
2929 /* Create the .got section. */
2930 elf_hash_table (info)->dynobj = dynobj = output_bfd;
2931 if (!_bfd_elf_create_got_section (dynobj, info))
2932 return FALSE;
2933 }
2934
48d502e1
BS
2935 if (sgot == NULL)
2936 {
2937 sgot = bfd_get_section_by_name (dynobj, ".got");
2938 BFD_ASSERT (sgot != NULL);
2939 }
2940
2941 if (h != NULL)
2942 {
2943 bfd_boolean dyn;
2944
2945 off = h->got.offset;
2946 BFD_ASSERT (off != (bfd_vma) - 1);
2947 dyn = elf_hash_table (info)->dynamic_sections_created;
2948
2949 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2950 || (info->shared
2951 && (info->symbolic
2952 || h->dynindx == -1
2953 || h->forced_local)
2954 && h->def_regular))
2955 {
2956 /* This is actually a static link, or it is a
2957 -Bsymbolic link and the symbol is defined
2958 locally, or the symbol was forced to be local
2959 because of a version file.. We must initialize
2960 this entry in the global offset table. Since
2961 the offset must always be a multiple of 4, we
2962 use the least significant bit to record whether
2963 we have initialized it already.
2964
2965 When doing a dynamic link, we create a .rela.got
2966 relocation entry to initialize the value. This
2967 is done in the finish_dynamic_symbol routine. */
2968 if ((off & 1) != 0)
2969 off &= ~1;
2970 else
2971 {
2972 bfd_put_32 (output_bfd, relocation,
2973 sgot->contents + off);
2974 h->got.offset |= 1;
2975 }
2976 }
2977 else
2978 unresolved_reloc = FALSE;
2979 }
2980 else
2981 {
2982 BFD_ASSERT (local_got_offsets != NULL);
2983 off = local_got_offsets[r_symndx];
2984 BFD_ASSERT (off != (bfd_vma) - 1);
2985
2986 /* The offset must always be a multiple of 4. We use
2987 the least significant bit to record whether we have
2988 already generated the necessary reloc. */
2989 if ((off & 1) != 0)
2990 off &= ~1;
2991 else
2992 {
2993 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
2994
2995 if (info->shared)
2996 {
2997 asection *s;
2998 Elf_Internal_Rela outrel;
2999 bfd_byte *loc;
3000
3001 s = bfd_get_section_by_name (dynobj, ".rela.got");
3002 BFD_ASSERT (s != NULL);
3003
3004 outrel.r_offset = (sgot->output_section->vma
3005 + sgot->output_offset + off);
3006 outrel.r_info =
3007 ELF32_R_INFO (0, R_pcrel24);
3008 outrel.r_addend = relocation;
3009 loc = s->contents;
3010 loc +=
3011 s->reloc_count++ * sizeof (Elf32_External_Rela);
3012 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3013 }
3014
3015 local_got_offsets[r_symndx] |= 1;
3016 }
3017 }
3018
3019 relocation = sgot->output_offset + off;
3020 rel->r_addend = 0;
3021 /* bfin : preg = [preg + 17bitdiv4offset] relocation is div by 4. */
3022 relocation /= 4;
3023 }
3024 goto do_default;
3025
3026 case R_pcrel24:
3027 case R_pcrel24_jump_l:
3028 {
3029 bfd_vma x;
3030
3031 relocation += rel->r_addend;
3032
3033 /* Perform usual pc-relative correction. */
3034 relocation -= input_section->output_section->vma + input_section->output_offset;
3035 relocation -= address;
3036
3037 /* We are getting reloc_entry->address 2 byte off from
3038 the start of instruction. Assuming absolute postion
3039 of the reloc data. But, following code had been written assuming
3040 reloc address is starting at begining of instruction.
3041 To compensate that I have increased the value of
3042 relocation by 1 (effectively 2) and used the addr -2 instead of addr. */
3043
3044 relocation += 2;
3045 address -= 2;
3046
3047 relocation >>= 1;
3048
3049 x = bfd_get_16 (input_bfd, contents + address);
3050 x = (x & 0xff00) | ((relocation >> 16) & 0xff);
3051 bfd_put_16 (input_bfd, x, contents + address);
3052
3053 x = bfd_get_16 (input_bfd, contents + address + 2);
3054 x = relocation & 0xFFFF;
3055 bfd_put_16 (input_bfd, x, contents + address + 2);
3056 r = bfd_reloc_ok;
3057 }
3058 break;
3059
3060 default:
3061 do_default:
3062 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3063 contents, address,
3064 relocation, rel->r_addend);
3065
3066 break;
3067 }
3068
3069 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3070 because such sections are not SEC_ALLOC and thus ld.so will
3071 not process them. */
3072 if (unresolved_reloc
3073 && !((input_section->flags & SEC_DEBUGGING) != 0 && h->def_dynamic))
3074 {
3075 (*_bfd_error_handler)
3076 (_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"),
3077 input_bfd,
3078 input_section, (long) rel->r_offset, h->root.root.string);
3079 return FALSE;
3080 }
3081
3082 if (r != bfd_reloc_ok)
3083 {
3084 const char *name;
3085
3086 if (h != NULL)
3087 name = h->root.root.string;
3088 else
3089 {
3090 name = bfd_elf_string_from_elf_section (input_bfd,
3091 symtab_hdr->sh_link,
3092 sym->st_name);
0f64bb02
CM
3093 if (name == NULL)
3094 return FALSE;
3095 if (*name == '\0')
3096 name = bfd_section_name (input_bfd, sec);
3097 }
3098
48d502e1
BS
3099 if (r == bfd_reloc_overflow)
3100 {
3101 if (!(info->callbacks->reloc_overflow
3102 (info, (h ? &h->root : NULL), name, howto->name,
3103 (bfd_vma) 0, input_bfd, input_section, rel->r_offset)))
3104 return FALSE;
3105 }
3106 else
3107 {
3108 (*_bfd_error_handler)
3109 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3110 input_bfd, input_section,
3111 (long) rel->r_offset, name, (int) r);
3112 return FALSE;
3113 }
3114 }
3115 }
3116
3117 return TRUE;
3118}
3119
3120static asection *
3121bfin_gc_mark_hook (asection * sec,
07adf181 3122 struct bfd_link_info *info,
48d502e1
BS
3123 Elf_Internal_Rela * rel,
3124 struct elf_link_hash_entry *h,
3125 Elf_Internal_Sym * sym)
3126{
3127 if (h != NULL)
07adf181
AM
3128 switch (ELF32_R_TYPE (rel->r_info))
3129 {
3130 case R_BFIN_GNU_VTINHERIT:
3131 case R_BFIN_GNU_VTENTRY:
3132 return NULL;
3133 }
48d502e1 3134
07adf181 3135 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
48d502e1
BS
3136}
3137
3138/* Update the got entry reference counts for the section being removed. */
3139
3140static bfd_boolean
3141bfin_gc_sweep_hook (bfd * abfd,
3142 struct bfd_link_info *info,
3143 asection * sec,
3144 const Elf_Internal_Rela * relocs)
3145{
3146 Elf_Internal_Shdr *symtab_hdr;
3147 struct elf_link_hash_entry **sym_hashes;
3148 bfd_signed_vma *local_got_refcounts;
3149 const Elf_Internal_Rela *rel, *relend;
3150 bfd *dynobj;
3151 asection *sgot;
3152 asection *srelgot;
3153
3154 dynobj = elf_hash_table (info)->dynobj;
3155 if (dynobj == NULL)
3156 return TRUE;
3157
3158 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3159 sym_hashes = elf_sym_hashes (abfd);
3160 local_got_refcounts = elf_local_got_refcounts (abfd);
3161
3162 sgot = bfd_get_section_by_name (dynobj, ".got");
3163 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3164
3165 relend = relocs + sec->reloc_count;
3166 for (rel = relocs; rel < relend; rel++)
3167 {
3168 unsigned long r_symndx;
3169 struct elf_link_hash_entry *h;
3170
3171 switch (ELF32_R_TYPE (rel->r_info))
3172 {
3173 case R_got:
3174 r_symndx = ELF32_R_SYM (rel->r_info);
3175 if (r_symndx >= symtab_hdr->sh_info)
3176 {
3177 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3178 if (h->got.refcount > 0)
3179 {
3180 --h->got.refcount;
3181 if (h->got.refcount == 0)
3182 {
3183 /* We don't need the .got entry any more. */
3184 sgot->size -= 4;
3185 srelgot->size -= sizeof (Elf32_External_Rela);
3186 }
3187 }
3188 }
3189 else if (local_got_refcounts != NULL)
3190 {
3191 if (local_got_refcounts[r_symndx] > 0)
3192 {
3193 --local_got_refcounts[r_symndx];
3194 if (local_got_refcounts[r_symndx] == 0)
3195 {
3196 /* We don't need the .got entry any more. */
3197 sgot->size -= 4;
3198 if (info->shared)
3199 srelgot->size -= sizeof (Elf32_External_Rela);
3200 }
3201 }
3202 }
3203 break;
3204 default:
3205 break;
3206 }
3207 }
3208 return TRUE;
3209}
3210
3211/* We need dynamic symbols for every section, since segments can
3212 relocate independently. */
3213static bfd_boolean
3214_bfinfdpic_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED,
3215 struct bfd_link_info *info
3216 ATTRIBUTE_UNUSED,
3217 asection *p ATTRIBUTE_UNUSED)
3218{
3219 switch (elf_section_data (p)->this_hdr.sh_type)
3220 {
3221 case SHT_PROGBITS:
3222 case SHT_NOBITS:
3223 /* If sh_type is yet undecided, assume it could be
3224 SHT_PROGBITS/SHT_NOBITS. */
3225 case SHT_NULL:
3226 return FALSE;
3227
3228 /* There shouldn't be section relative relocations
3229 against any other section. */
3230 default:
3231 return TRUE;
3232 }
3233}
3234
3235/* Create a .got section, as well as its additional info field. This
3236 is almost entirely copied from
3237 elflink.c:_bfd_elf_create_got_section(). */
3238
3239static bfd_boolean
3240_bfin_create_got_section (bfd *abfd, struct bfd_link_info *info)
3241{
3242 flagword flags, pltflags;
3243 asection *s;
3244 struct elf_link_hash_entry *h;
48d502e1
BS
3245 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3246 int ptralign;
3247 int offset;
3248
3249 /* This function may be called more than once. */
3250 s = bfd_get_section_by_name (abfd, ".got");
3251 if (s != NULL && (s->flags & SEC_LINKER_CREATED) != 0)
3252 return TRUE;
3253
3254 /* Machine specific: although pointers are 32-bits wide, we want the
3255 GOT to be aligned to a 64-bit boundary, such that function
3256 descriptors in it can be accessed with 64-bit loads and
3257 stores. */
3258 ptralign = 3;
3259
3260 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3261 | SEC_LINKER_CREATED);
3262 pltflags = flags;
3263
3264 s = bfd_make_section_with_flags (abfd, ".got", flags);
3265 if (s == NULL
3266 || !bfd_set_section_alignment (abfd, s, ptralign))
3267 return FALSE;
3268
3269 if (bed->want_got_plt)
3270 {
3271 s = bfd_make_section_with_flags (abfd, ".got.plt", flags);
3272 if (s == NULL
3273 || !bfd_set_section_alignment (abfd, s, ptralign))
3274 return FALSE;
3275 }
3276
3277 if (bed->want_got_sym)
3278 {
3279 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
3280 (or .got.plt) section. We don't do this in the linker script
3281 because we don't want to define the symbol if we are not creating
3282 a global offset table. */
5592d7ec 3283 h = _bfd_elf_define_linkage_sym (abfd, info, s, "__GLOBAL_OFFSET_TABLE_");
48d502e1
BS
3284 elf_hash_table (info)->hgot = h;
3285 if (h == NULL)
3286 return FALSE;
3287
3288 /* Machine-specific: we want the symbol for executables as
3289 well. */
3290 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3291 return FALSE;
3292 }
3293
3294 /* The first bit of the global offset table is the header. */
3295 s->size += bed->got_header_size;
3296
3297 /* This is the machine-specific part. Create and initialize section
3298 data for the got. */
3299 if (IS_FDPIC (abfd))
3300 {
3301 bfinfdpic_got_section (info) = s;
3302 bfinfdpic_relocs_info (info) = htab_try_create (1,
3303 bfinfdpic_relocs_info_hash,
3304 bfinfdpic_relocs_info_eq,
3305 (htab_del) NULL);
3306 if (! bfinfdpic_relocs_info (info))
3307 return FALSE;
3308
3309 s = bfd_make_section_with_flags (abfd, ".rel.got",
3310 (flags | SEC_READONLY));
3311 if (s == NULL
3312 || ! bfd_set_section_alignment (abfd, s, 2))
3313 return FALSE;
3314
3315 bfinfdpic_gotrel_section (info) = s;
3316
3317 /* Machine-specific. */
3318 s = bfd_make_section_with_flags (abfd, ".rofixup",
3319 (flags | SEC_READONLY));
3320 if (s == NULL
3321 || ! bfd_set_section_alignment (abfd, s, 2))
3322 return FALSE;
3323
3324 bfinfdpic_gotfixup_section (info) = s;
3325 offset = -2048;
3326 flags = BSF_GLOBAL;
3327 }
3328 else
3329 {
3330 offset = 2048;
3331 flags = BSF_GLOBAL | BSF_WEAK;
3332 }
3333
48d502e1
BS
3334 return TRUE;
3335}
3336
3337/* Make sure the got and plt sections exist, and that our pointers in
3338 the link hash table point to them. */
3339
3340static bfd_boolean
3341elf32_bfinfdpic_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3342{
3343 /* This is mostly copied from
3344 elflink.c:_bfd_elf_create_dynamic_sections(). */
3345 flagword flags, pltflags;
3346 asection *s;
3347 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3348
3349 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
3350 .rel[a].bss sections. */
3351
3352 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3353 | SEC_LINKER_CREATED);
3354
3355 pltflags = flags;
3356 pltflags |= SEC_CODE;
3357 if (bed->plt_not_loaded)
3358 pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS);
3359 if (bed->plt_readonly)
3360 pltflags |= SEC_READONLY;
3361
117ed4f8 3362 s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
48d502e1 3363 if (s == NULL
48d502e1
BS
3364 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
3365 return FALSE;
3366 /* Blackfin-specific: remember it. */
3367 bfinfdpic_plt_section (info) = s;
3368
3369 if (bed->want_plt_sym)
3370 {
3371 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
3372 .plt section. */
3373 struct elf_link_hash_entry *h;
3374 struct bfd_link_hash_entry *bh = NULL;
3375
3376 if (! (_bfd_generic_link_add_one_symbol
5592d7ec 3377 (info, abfd, "__PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, 0, NULL,
48d502e1
BS
3378 FALSE, get_elf_backend_data (abfd)->collect, &bh)))
3379 return FALSE;
3380 h = (struct elf_link_hash_entry *) bh;
3381 h->def_regular = 1;
3382 h->type = STT_OBJECT;
3383
3384 if (! info->executable
3385 && ! bfd_elf_link_record_dynamic_symbol (info, h))
3386 return FALSE;
3387 }
3388
3389 /* Blackfin-specific: we want rel relocations for the plt. */
117ed4f8 3390 s = bfd_make_section_with_flags (abfd, ".rel.plt", flags | SEC_READONLY);
48d502e1 3391 if (s == NULL
48d502e1
BS
3392 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
3393 return FALSE;
3394 /* Blackfin-specific: remember it. */
3395 bfinfdpic_pltrel_section (info) = s;
3396
3397 /* Blackfin-specific: we want to create the GOT in the Blackfin way. */
3398 if (! _bfin_create_got_section (abfd, info))
3399 return FALSE;
3400
3401 /* Blackfin-specific: make sure we created everything we wanted. */
3402 BFD_ASSERT (bfinfdpic_got_section (info) && bfinfdpic_gotrel_section (info)
3403 /* && bfinfdpic_gotfixup_section (info) */
3404 && bfinfdpic_plt_section (info)
3405 && bfinfdpic_pltrel_section (info));
3406
3407 if (bed->want_dynbss)
3408 {
3409 /* The .dynbss section is a place to put symbols which are defined
3410 by dynamic objects, are referenced by regular objects, and are
3411 not functions. We must allocate space for them in the process
3412 image and use a R_*_COPY reloc to tell the dynamic linker to
3413 initialize them at run time. The linker script puts the .dynbss
3414 section into the .bss section of the final image. */
117ed4f8
AM
3415 s = bfd_make_section_with_flags (abfd, ".dynbss",
3416 SEC_ALLOC | SEC_LINKER_CREATED);
3417 if (s == NULL)
48d502e1
BS
3418 return FALSE;
3419
3420 /* The .rel[a].bss section holds copy relocs. This section is not
3421 normally needed. We need to create it here, though, so that the
3422 linker will map it to an output section. We can't just create it
3423 only if we need it, because we will not know whether we need it
3424 until we have seen all the input files, and the first time the
3425 main linker code calls BFD after examining all the input files
3426 (size_dynamic_sections) the input sections have already been
3427 mapped to the output sections. If the section turns out not to
3428 be needed, we can discard it later. We will never need this
3429 section when generating a shared object, since they do not use
3430 copy relocs. */
3431 if (! info->shared)
3432 {
117ed4f8
AM
3433 s = bfd_make_section_with_flags (abfd,
3434 (bed->default_use_rela_p
3435 ? ".rela.bss" : ".rel.bss"),
3436 flags | SEC_READONLY);
48d502e1 3437 if (s == NULL
48d502e1
BS
3438 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
3439 return FALSE;
3440 }
3441 }
3442
3443 return TRUE;
3444}
3445
3446/* The name of the dynamic interpreter. This is put in the .interp
3447 section. */
3448
3449#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
3450
3451#define DEFAULT_STACK_SIZE 0x20000
3452
3453/* This structure is used to collect the number of entries present in
3454 each addressable range of the got. */
3455struct _bfinfdpic_dynamic_got_info
3456{
3457 /* Several bits of information about the current link. */
3458 struct bfd_link_info *info;
3459 /* Total size needed for GOT entries within the 18- or 32-bit
3460 ranges. */
3461 bfd_vma got17m4, gothilo;
3462 /* Total size needed for function descriptor entries within the 18-
3463 or 32-bit ranges. */
3464 bfd_vma fd17m4, fdhilo;
3465 /* Total size needed function descriptor entries referenced in PLT
3466 entries, that would be profitable to place in offsets close to
3467 the PIC register. */
3468 bfd_vma fdplt;
3469 /* Total size needed by lazy PLT entries. */
3470 bfd_vma lzplt;
3471 /* Number of relocations carried over from input object files. */
3472 unsigned long relocs;
3473 /* Number of fixups introduced by relocations in input object files. */
3474 unsigned long fixups;
3475};
3476
3477/* Compute the total GOT size required by each symbol in each range.
3478 Symbols may require up to 4 words in the GOT: an entry pointing to
3479 the symbol, an entry pointing to its function descriptor, and a
3480 private function descriptors taking two words. */
3481
3482static int
3483_bfinfdpic_count_got_plt_entries (void **entryp, void *dinfo_)
3484{
3485 struct bfinfdpic_relocs_info *entry = *entryp;
3486 struct _bfinfdpic_dynamic_got_info *dinfo = dinfo_;
3487 unsigned relocs = 0, fixups = 0;
3488
3489 /* Allocate space for a GOT entry pointing to the symbol. */
3490 if (entry->got17m4)
3491 dinfo->got17m4 += 4;
3492 else if (entry->gothilo)
3493 dinfo->gothilo += 4;
3494 else
3495 entry->relocs32--;
3496 entry->relocs32++;
3497
3498 /* Allocate space for a GOT entry pointing to the function
3499 descriptor. */
3500 if (entry->fdgot17m4)
3501 dinfo->got17m4 += 4;
3502 else if (entry->fdgothilo)
3503 dinfo->gothilo += 4;
3504 else
3505 entry->relocsfd--;
3506 entry->relocsfd++;
3507
3508 /* Decide whether we need a PLT entry, a function descriptor in the
3509 GOT, and a lazy PLT entry for this symbol. */
3510 entry->plt = entry->call
3511 && entry->symndx == -1 && ! BFINFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)
3512 && elf_hash_table (dinfo->info)->dynamic_sections_created;
3513 entry->privfd = entry->plt
3514 || entry->fdgoff17m4 || entry->fdgoffhilo
3515 || ((entry->fd || entry->fdgot17m4 || entry->fdgothilo)
3516 && (entry->symndx != -1
3517 || BFINFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h)));
3518 entry->lazyplt = entry->privfd
3519 && entry->symndx == -1 && ! BFINFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)
3520 && ! (dinfo->info->flags & DF_BIND_NOW)
3521 && elf_hash_table (dinfo->info)->dynamic_sections_created;
3522
3523 /* Allocate space for a function descriptor. */
3524 if (entry->fdgoff17m4)
3525 dinfo->fd17m4 += 8;
3526 else if (entry->privfd && entry->plt)
3527 dinfo->fdplt += 8;
3528 else if (entry->privfd)
3529 dinfo->fdhilo += 8;
3530 else
3531 entry->relocsfdv--;
3532 entry->relocsfdv++;
3533
3534 if (entry->lazyplt)
3535 dinfo->lzplt += LZPLT_NORMAL_SIZE;
3536
3537 if (!dinfo->info->executable || dinfo->info->pie)
3538 relocs = entry->relocs32 + entry->relocsfd + entry->relocsfdv;
3539 else
3540 {
3541 if (entry->symndx != -1 || BFINFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))
3542 {
3543 if (entry->symndx != -1
3544 || entry->d.h->root.type != bfd_link_hash_undefweak)
3545 fixups += entry->relocs32 + 2 * entry->relocsfdv;
3546 }
3547 else
3548 relocs += entry->relocs32 + entry->relocsfdv;
3549
3550 if (entry->symndx != -1
3551 || BFINFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h))
3552 {
3553 if (entry->symndx != -1
3554 || entry->d.h->root.type != bfd_link_hash_undefweak)
3555 fixups += entry->relocsfd;
3556 }
3557 else
3558 relocs += entry->relocsfd;
3559 }
3560
3561 entry->dynrelocs += relocs;
3562 entry->fixups += fixups;
3563 dinfo->relocs += relocs;
3564 dinfo->fixups += fixups;
3565
3566 return 1;
3567}
3568
3569/* This structure is used to assign offsets to got entries, function
3570 descriptors, plt entries and lazy plt entries. */
3571
3572struct _bfinfdpic_dynamic_got_plt_info
3573{
3574 /* Summary information collected with _bfinfdpic_count_got_plt_entries. */
3575 struct _bfinfdpic_dynamic_got_info g;
3576
3577 /* For each addressable range, we record a MAX (positive) and MIN
3578 (negative) value. CUR is used to assign got entries, and it's
3579 incremented from an initial positive value to MAX, then from MIN
3580 to FDCUR (unless FDCUR wraps around first). FDCUR is used to
3581 assign function descriptors, and it's decreased from an initial
3582 non-positive value to MIN, then from MAX down to CUR (unless CUR
3583 wraps around first). All of MIN, MAX, CUR and FDCUR always point
3584 to even words. ODD, if non-zero, indicates an odd word to be
3585 used for the next got entry, otherwise CUR is used and
3586 incremented by a pair of words, wrapping around when it reaches
3587 MAX. FDCUR is decremented (and wrapped) before the next function
3588 descriptor is chosen. FDPLT indicates the number of remaining
3589 slots that can be used for function descriptors used only by PLT
3590 entries. */
3591 struct _bfinfdpic_dynamic_got_alloc_data
3592 {
3593 bfd_signed_vma max, cur, odd, fdcur, min;
3594 bfd_vma fdplt;
3595 } got17m4, gothilo;
3596};
3597
3598/* Determine the positive and negative ranges to be used by each
3599 offset range in the GOT. FDCUR and CUR, that must be aligned to a
3600 double-word boundary, are the minimum (negative) and maximum
3601 (positive) GOT offsets already used by previous ranges, except for
3602 an ODD entry that may have been left behind. GOT and FD indicate
3603 the size of GOT entries and function descriptors that must be
3604 placed within the range from -WRAP to WRAP. If there's room left,
3605 up to FDPLT bytes should be reserved for additional function
3606 descriptors. */
3607
3608inline static bfd_signed_vma
3609_bfinfdpic_compute_got_alloc_data (struct _bfinfdpic_dynamic_got_alloc_data *gad,
3610 bfd_signed_vma fdcur,
3611 bfd_signed_vma odd,
3612 bfd_signed_vma cur,
3613 bfd_vma got,
3614 bfd_vma fd,
3615 bfd_vma fdplt,
3616 bfd_vma wrap)
3617{
3618 bfd_signed_vma wrapmin = -wrap;
3619
3620 /* Start at the given initial points. */
3621 gad->fdcur = fdcur;
3622 gad->cur = cur;
3623
3624 /* If we had an incoming odd word and we have any got entries that
3625 are going to use it, consume it, otherwise leave gad->odd at
3626 zero. We might force gad->odd to zero and return the incoming
3627 odd such that it is used by the next range, but then GOT entries
3628 might appear to be out of order and we wouldn't be able to
3629 shorten the GOT by one word if it turns out to end with an
3630 unpaired GOT entry. */
3631 if (odd && got)
3632 {
3633 gad->odd = odd;
3634 got -= 4;
3635 odd = 0;
3636 }
3637 else
3638 gad->odd = 0;
3639
3640 /* If we're left with an unpaired GOT entry, compute its location
3641 such that we can return it. Otherwise, if got doesn't require an
3642 odd number of words here, either odd was already zero in the
3643 block above, or it was set to zero because got was non-zero, or
3644 got was already zero. In the latter case, we want the value of
3645 odd to carry over to the return statement, so we don't want to
3646 reset odd unless the condition below is true. */
3647 if (got & 4)
3648 {
3649 odd = cur + got;
3650 got += 4;
3651 }
3652
3653 /* Compute the tentative boundaries of this range. */
3654 gad->max = cur + got;
3655 gad->min = fdcur - fd;
3656 gad->fdplt = 0;
3657
3658 /* If function descriptors took too much space, wrap some of them
3659 around. */
3660 if (gad->min < wrapmin)
3661 {
3662 gad->max += wrapmin - gad->min;
3663 gad->min = wrapmin;
3664 }
3665 /* If there is space left and we have function descriptors
3666 referenced in PLT entries that could take advantage of shorter
3667 offsets, place them here. */
3668 else if (fdplt && gad->min > wrapmin)
3669 {
3670 bfd_vma fds;
3671 if ((bfd_vma) (gad->min - wrapmin) < fdplt)
3672 fds = gad->min - wrapmin;
3673 else
3674 fds = fdplt;
3675
3676 fdplt -= fds;
3677 gad->min -= fds;
3678 gad->fdplt += fds;
3679 }
3680
3681 /* If GOT entries took too much space, wrap some of them around.
3682 This may well cause gad->min to become lower than wrapmin. This
3683 will cause a relocation overflow later on, so we don't have to
3684 report it here . */
3685 if ((bfd_vma) gad->max > wrap)
3686 {
3687 gad->min -= gad->max - wrap;
3688 gad->max = wrap;
3689 }
3690 /* If there is more space left, try to place some more function
3691 descriptors for PLT entries. */
3692 else if (fdplt && (bfd_vma) gad->max < wrap)
3693 {
3694 bfd_vma fds;
3695 if ((bfd_vma) (wrap - gad->max) < fdplt)
3696 fds = wrap - gad->max;
3697 else
3698 fds = fdplt;
3699
3700 fdplt -= fds;
3701 gad->max += fds;
3702 gad->fdplt += fds;
3703 }
3704
3705 /* If odd was initially computed as an offset past the wrap point,
3706 wrap it around. */
3707 if (odd > gad->max)
3708 odd = gad->min + odd - gad->max;
3709
3710 /* _bfinfdpic_get_got_entry() below will always wrap gad->cur if needed
3711 before returning, so do it here too. This guarantees that,
3712 should cur and fdcur meet at the wrap point, they'll both be
3713 equal to min. */
3714 if (gad->cur == gad->max)
3715 gad->cur = gad->min;
3716
3717 return odd;
3718}
3719
3720/* Compute the location of the next GOT entry, given the allocation
3721 data for a range. */
3722
3723inline static bfd_signed_vma
3724_bfinfdpic_get_got_entry (struct _bfinfdpic_dynamic_got_alloc_data *gad)
3725{
3726 bfd_signed_vma ret;
3727
3728 if (gad->odd)
3729 {
3730 /* If there was an odd word left behind, use it. */
3731 ret = gad->odd;
3732 gad->odd = 0;
3733 }
3734 else
3735 {
3736 /* Otherwise, use the word pointed to by cur, reserve the next
3737 as an odd word, and skip to the next pair of words, possibly
3738 wrapping around. */
3739 ret = gad->cur;
3740 gad->odd = gad->cur + 4;
3741 gad->cur += 8;
3742 if (gad->cur == gad->max)
3743 gad->cur = gad->min;
3744 }
3745
3746 return ret;
3747}
3748
3749/* Compute the location of the next function descriptor entry in the
3750 GOT, given the allocation data for a range. */
3751
3752inline static bfd_signed_vma
3753_bfinfdpic_get_fd_entry (struct _bfinfdpic_dynamic_got_alloc_data *gad)
3754{
3755 /* If we're at the bottom, wrap around, and only then allocate the
3756 next pair of words. */
3757 if (gad->fdcur == gad->min)
3758 gad->fdcur = gad->max;
3759 return gad->fdcur -= 8;
3760}
3761
3762/* Assign GOT offsets for every GOT entry and function descriptor.
3763 Doing everything in a single pass is tricky. */
3764
3765static int
3766_bfinfdpic_assign_got_entries (void **entryp, void *info_)
3767{
3768 struct bfinfdpic_relocs_info *entry = *entryp;
3769 struct _bfinfdpic_dynamic_got_plt_info *dinfo = info_;
3770
3771 if (entry->got17m4)
3772 entry->got_entry = _bfinfdpic_get_got_entry (&dinfo->got17m4);
3773 else if (entry->gothilo)
3774 entry->got_entry = _bfinfdpic_get_got_entry (&dinfo->gothilo);
3775
3776 if (entry->fdgot17m4)
3777 entry->fdgot_entry = _bfinfdpic_get_got_entry (&dinfo->got17m4);
3778 else if (entry->fdgothilo)
3779 entry->fdgot_entry = _bfinfdpic_get_got_entry (&dinfo->gothilo);
3780
3781 if (entry->fdgoff17m4)
3782 entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->got17m4);
3783 else if (entry->plt && dinfo->got17m4.fdplt)
3784 {
3785 dinfo->got17m4.fdplt -= 8;
3786 entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->got17m4);
3787 }
3788 else if (entry->plt)
3789 {
3790 dinfo->gothilo.fdplt -= 8;
3791 entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->gothilo);
3792 }
3793 else if (entry->privfd)
3794 entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->gothilo);
3795
3796 return 1;
3797}
3798
3799/* Assign GOT offsets to private function descriptors used by PLT
3800 entries (or referenced by 32-bit offsets), as well as PLT entries
3801 and lazy PLT entries. */
3802
3803static int
3804_bfinfdpic_assign_plt_entries (void **entryp, void *info_)
3805{
3806 struct bfinfdpic_relocs_info *entry = *entryp;
3807 struct _bfinfdpic_dynamic_got_plt_info *dinfo = info_;
3808
3809 /* If this symbol requires a local function descriptor, allocate
3810 one. */
3811 if (entry->privfd && entry->fd_entry == 0)
3812 {
3813 if (dinfo->got17m4.fdplt)
3814 {
3815 entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->got17m4);
3816 dinfo->got17m4.fdplt -= 8;
3817 }
3818 else
3819 {
3820 BFD_ASSERT (dinfo->gothilo.fdplt);
3821 entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->gothilo);
3822 dinfo->gothilo.fdplt -= 8;
3823 }
3824 }
3825
3826 if (entry->plt)
3827 {
3828 int size;
3829
3830 /* We use the section's raw size to mark the location of the
3831 next PLT entry. */
3832 entry->plt_entry = bfinfdpic_plt_section (dinfo->g.info)->size;
3833
3834 /* Figure out the length of this PLT entry based on the
3835 addressing mode we need to reach the function descriptor. */
3836 BFD_ASSERT (entry->fd_entry);
3837 if (entry->fd_entry >= -(1 << (18 - 1))
3838 && entry->fd_entry + 4 < (1 << (18 - 1)))
3839 size = 10;
3840 else
3841 size = 16;
3842
3843 bfinfdpic_plt_section (dinfo->g.info)->size += size;
3844 }
3845
3846 if (entry->lazyplt)
3847 {
3848 entry->lzplt_entry = dinfo->g.lzplt;
3849 dinfo->g.lzplt += LZPLT_NORMAL_SIZE;
3850 /* If this entry is the one that gets the resolver stub, account
3851 for the additional instruction. */
3852 if (entry->lzplt_entry % BFINFDPIC_LZPLT_BLOCK_SIZE
3853 == BFINFDPIC_LZPLT_RESOLV_LOC)
3854 dinfo->g.lzplt += LZPLT_RESOLVER_EXTRA;
3855 }
3856
3857 return 1;
3858}
3859
3860/* Follow indirect and warning hash entries so that each got entry
3861 points to the final symbol definition. P must point to a pointer
3862 to the hash table we're traversing. Since this traversal may
3863 modify the hash table, we set this pointer to NULL to indicate
3864 we've made a potentially-destructive change to the hash table, so
3865 the traversal must be restarted. */
3866static int
3867_bfinfdpic_resolve_final_relocs_info (void **entryp, void *p)
3868{
3869 struct bfinfdpic_relocs_info *entry = *entryp;
3870 htab_t *htab = p;
3871
3872 if (entry->symndx == -1)
3873 {
3874 struct elf_link_hash_entry *h = entry->d.h;
3875 struct bfinfdpic_relocs_info *oentry;
3876
3877 while (h->root.type == bfd_link_hash_indirect
3878 || h->root.type == bfd_link_hash_warning)
3879 h = (struct elf_link_hash_entry *)h->root.u.i.link;
3880
3881 if (entry->d.h == h)
3882 return 1;
3883
3884 oentry = bfinfdpic_relocs_info_for_global (*htab, 0, h, entry->addend,
3885 NO_INSERT);
3886
3887 if (oentry)
3888 {
3889 /* Merge the two entries. */
3890 bfinfdpic_pic_merge_early_relocs_info (oentry, entry);
3891 htab_clear_slot (*htab, entryp);
3892 return 1;
3893 }
3894
3895 entry->d.h = h;
3896
3897 /* If we can't find this entry with the new bfd hash, re-insert
3898 it, and get the traversal restarted. */
3899 if (! htab_find (*htab, entry))
3900 {
3901 htab_clear_slot (*htab, entryp);
3902 entryp = htab_find_slot (*htab, entry, INSERT);
3903 if (! *entryp)
3904 *entryp = entry;
3905 /* Abort the traversal, since the whole table may have
3906 moved, and leave it up to the parent to restart the
3907 process. */
3908 *(htab_t *)p = NULL;
3909 return 0;
3910 }
3911 }
3912
3913 return 1;
3914}
3915
3916/* Set the sizes of the dynamic sections. */
3917
3918static bfd_boolean
3919elf32_bfinfdpic_size_dynamic_sections (bfd *output_bfd,
3920 struct bfd_link_info *info)
3921{
3922 bfd *dynobj;
3923 asection *s;
3924 struct _bfinfdpic_dynamic_got_plt_info gpinfo;
3925 bfd_signed_vma odd;
3926 bfd_vma limit;
3927
3928 dynobj = elf_hash_table (info)->dynobj;
3929 BFD_ASSERT (dynobj != NULL);
3930
3931 if (elf_hash_table (info)->dynamic_sections_created)
3932 {
3933 /* Set the contents of the .interp section to the interpreter. */
3934 if (info->executable)
3935 {
3936 s = bfd_get_section_by_name (dynobj, ".interp");
3937 BFD_ASSERT (s != NULL);
3938 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3939 s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
3940 }
3941 }
3942
3943 memset (&gpinfo, 0, sizeof (gpinfo));
3944 gpinfo.g.info = info;
3945
3946 for (;;)
3947 {
3948 htab_t relocs = bfinfdpic_relocs_info (info);
3949
3950 htab_traverse (relocs, _bfinfdpic_resolve_final_relocs_info, &relocs);
3951
3952 if (relocs == bfinfdpic_relocs_info (info))
3953 break;
3954 }
3955
3956 htab_traverse (bfinfdpic_relocs_info (info), _bfinfdpic_count_got_plt_entries,
3957 &gpinfo.g);
3958
3959 odd = 12;
3960 /* Compute the total size taken by entries in the 18-bit range,
3961 to tell how many PLT function descriptors we can bring into it
3962 without causing it to overflow. */
3963 limit = odd + gpinfo.g.got17m4 + gpinfo.g.fd17m4;
3964 if (limit < (bfd_vma)1 << 18)
3965 limit = ((bfd_vma)1 << 18) - limit;
3966 else
3967 limit = 0;
3968 if (gpinfo.g.fdplt < limit)
3969 limit = gpinfo.g.fdplt;
3970
3971 /* Determine the ranges of GOT offsets that we can use for each
3972 range of addressing modes. */
3973 odd = _bfinfdpic_compute_got_alloc_data (&gpinfo.got17m4,
3974 0,
3975 odd,
3976 16,
3977 gpinfo.g.got17m4,
3978 gpinfo.g.fd17m4,
3979 limit,
3980 (bfd_vma)1 << (18-1));
3981 odd = _bfinfdpic_compute_got_alloc_data (&gpinfo.gothilo,
3982 gpinfo.got17m4.min,
3983 odd,
3984 gpinfo.got17m4.max,
3985 gpinfo.g.gothilo,
3986 gpinfo.g.fdhilo,
3987 gpinfo.g.fdplt - gpinfo.got17m4.fdplt,
3988 (bfd_vma)1 << (32-1));
3989
3990 /* Now assign (most) GOT offsets. */
3991 htab_traverse (bfinfdpic_relocs_info (info), _bfinfdpic_assign_got_entries,
3992 &gpinfo);
3993
3994 bfinfdpic_got_section (info)->size = gpinfo.gothilo.max
3995 - gpinfo.gothilo.min
3996 /* If an odd word is the last word of the GOT, we don't need this
3997 word to be part of the GOT. */
3998 - (odd + 4 == gpinfo.gothilo.max ? 4 : 0);
3999 if (bfinfdpic_got_section (info)->size == 0)
4000 bfinfdpic_got_section (info)->flags |= SEC_EXCLUDE;
4001 else if (bfinfdpic_got_section (info)->size == 12
4002 && ! elf_hash_table (info)->dynamic_sections_created)
4003 {
4004 bfinfdpic_got_section (info)->flags |= SEC_EXCLUDE;
4005 bfinfdpic_got_section (info)->size = 0;
4006 }
4007 else
4008 {
4009 bfinfdpic_got_section (info)->contents =
4010 (bfd_byte *) bfd_zalloc (dynobj,
4011 bfinfdpic_got_section (info)->size);
4012 if (bfinfdpic_got_section (info)->contents == NULL)
4013 return FALSE;
4014 }
4015
4016 if (elf_hash_table (info)->dynamic_sections_created)
4017 /* Subtract the number of lzplt entries, since those will generate
4018 relocations in the pltrel section. */
4019 bfinfdpic_gotrel_section (info)->size =
4020 (gpinfo.g.relocs - gpinfo.g.lzplt / LZPLT_NORMAL_SIZE)
4021 * get_elf_backend_data (output_bfd)->s->sizeof_rel;
4022 else
4023 BFD_ASSERT (gpinfo.g.relocs == 0);
4024 if (bfinfdpic_gotrel_section (info)->size == 0)
4025 bfinfdpic_gotrel_section (info)->flags |= SEC_EXCLUDE;
4026 else
4027 {
4028 bfinfdpic_gotrel_section (info)->contents =
4029 (bfd_byte *) bfd_zalloc (dynobj,
4030 bfinfdpic_gotrel_section (info)->size);
4031 if (bfinfdpic_gotrel_section (info)->contents == NULL)
4032 return FALSE;
4033 }
4034
4035 bfinfdpic_gotfixup_section (info)->size = (gpinfo.g.fixups + 1) * 4;
4036 if (bfinfdpic_gotfixup_section (info)->size == 0)
4037 bfinfdpic_gotfixup_section (info)->flags |= SEC_EXCLUDE;
4038 else
4039 {
4040 bfinfdpic_gotfixup_section (info)->contents =
4041 (bfd_byte *) bfd_zalloc (dynobj,
4042 bfinfdpic_gotfixup_section (info)->size);
4043 if (bfinfdpic_gotfixup_section (info)->contents == NULL)
4044 return FALSE;
4045 }
4046
4047 if (elf_hash_table (info)->dynamic_sections_created)
4048 {
4049 bfinfdpic_pltrel_section (info)->size =
4050 gpinfo.g.lzplt / LZPLT_NORMAL_SIZE * get_elf_backend_data (output_bfd)->s->sizeof_rel;
4051 if (bfinfdpic_pltrel_section (info)->size == 0)
4052 bfinfdpic_pltrel_section (info)->flags |= SEC_EXCLUDE;
4053 else
4054 {
4055 bfinfdpic_pltrel_section (info)->contents =
4056 (bfd_byte *) bfd_zalloc (dynobj,
4057 bfinfdpic_pltrel_section (info)->size);
4058 if (bfinfdpic_pltrel_section (info)->contents == NULL)
4059 return FALSE;
4060 }
4061 }
4062
4063 /* Add 4 bytes for every block of at most 65535 lazy PLT entries,
4064 such that there's room for the additional instruction needed to
4065 call the resolver. Since _bfinfdpic_assign_got_entries didn't
4066 account for them, our block size is 4 bytes smaller than the real
4067 block size. */
4068 if (elf_hash_table (info)->dynamic_sections_created)
4069 {
4070 bfinfdpic_plt_section (info)->size = gpinfo.g.lzplt
4071 + ((gpinfo.g.lzplt + (BFINFDPIC_LZPLT_BLOCK_SIZE - 4) - LZPLT_NORMAL_SIZE)
4072 / (BFINFDPIC_LZPLT_BLOCK_SIZE - 4) * LZPLT_RESOLVER_EXTRA);
4073 }
4074
4075 /* Reset it, such that _bfinfdpic_assign_plt_entries() can use it to
4076 actually assign lazy PLT entries addresses. */
4077 gpinfo.g.lzplt = 0;
4078
4079 /* Save information that we're going to need to generate GOT and PLT
4080 entries. */
4081 bfinfdpic_got_initial_offset (info) = -gpinfo.gothilo.min;
4082
4083 if (get_elf_backend_data (output_bfd)->want_got_sym)
4084 elf_hash_table (info)->hgot->root.u.def.value
4085 += bfinfdpic_got_initial_offset (info);
4086
4087 if (elf_hash_table (info)->dynamic_sections_created)
4088 bfinfdpic_plt_initial_offset (info) =
4089 bfinfdpic_plt_section (info)->size;
4090
4091 htab_traverse (bfinfdpic_relocs_info (info), _bfinfdpic_assign_plt_entries,
4092 &gpinfo);
4093
4094 /* Allocate the PLT section contents only after
4095 _bfinfdpic_assign_plt_entries has a chance to add the size of the
4096 non-lazy PLT entries. */
4097 if (elf_hash_table (info)->dynamic_sections_created)
4098 {
4099 if (bfinfdpic_plt_section (info)->size == 0)
4100 bfinfdpic_plt_section (info)->flags |= SEC_EXCLUDE;
4101 else
4102 {
4103 bfinfdpic_plt_section (info)->contents =
4104 (bfd_byte *) bfd_zalloc (dynobj,
4105 bfinfdpic_plt_section (info)->size);
4106 if (bfinfdpic_plt_section (info)->contents == NULL)
4107 return FALSE;
4108 }
4109 }
4110
4111 if (elf_hash_table (info)->dynamic_sections_created)
4112 {
4113 if (bfinfdpic_got_section (info)->size)
4114 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0))
4115 return FALSE;
4116
4117 if (bfinfdpic_pltrel_section (info)->size)
4118 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0)
4119 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_REL)
4120 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0))
4121 return FALSE;
4122
4123 if (bfinfdpic_gotrel_section (info)->size)
4124 if (!_bfd_elf_add_dynamic_entry (info, DT_REL, 0)
4125 || !_bfd_elf_add_dynamic_entry (info, DT_RELSZ, 0)
4126 || !_bfd_elf_add_dynamic_entry (info, DT_RELENT,
4127 sizeof (Elf32_External_Rel)))
4128 return FALSE;
4129 }
4130
4131 return TRUE;
4132}
4133
4134static bfd_boolean
4135elf32_bfinfdpic_always_size_sections (bfd *output_bfd,
4136 struct bfd_link_info *info)
4137{
4138 if (!info->relocatable)
4139 {
4140 struct elf_link_hash_entry *h;
48d502e1
BS
4141
4142 /* Force a PT_GNU_STACK segment to be created. */
4143 if (! elf_tdata (output_bfd)->stack_flags)
4144 elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | PF_X;
4145
4146 /* Define __stacksize if it's not defined yet. */
4147 h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize",
4148 FALSE, FALSE, FALSE);
4149 if (! h || h->root.type != bfd_link_hash_defined
4150 || h->type != STT_OBJECT
4151 || !h->def_regular)
4152 {
4153 struct bfd_link_hash_entry *bh = NULL;
4154
4155 if (!(_bfd_generic_link_add_one_symbol
4156 (info, output_bfd, "__stacksize",
4157 BSF_GLOBAL, bfd_abs_section_ptr, DEFAULT_STACK_SIZE,
4158 (const char *) NULL, FALSE,
4159 get_elf_backend_data (output_bfd)->collect, &bh)))
4160 return FALSE;
4161
4162 h = (struct elf_link_hash_entry *) bh;
4163 h->def_regular = 1;
4164 h->type = STT_OBJECT;
4165 }
48d502e1
BS
4166 }
4167
4168 return TRUE;
4169}
4170
4171static bfd_boolean
e36284ab
AM
4172elf32_bfinfdpic_modify_program_headers (bfd *output_bfd,
4173 struct bfd_link_info *info)
48d502e1 4174{
e36284ab 4175 struct elf_obj_tdata *tdata = elf_tdata (output_bfd);
48d502e1 4176 struct elf_segment_map *m;
e36284ab 4177 Elf_Internal_Phdr *p;
48d502e1
BS
4178
4179 /* objcopy and strip preserve what's already there using
4180 elf32_bfinfdpic_copy_private_bfd_data (). */
4181 if (! info)
4182 return TRUE;
4183
e36284ab 4184 for (p = tdata->phdr, m = tdata->segment_map; m != NULL; m = m->next, p++)
48d502e1
BS
4185 if (m->p_type == PT_GNU_STACK)
4186 break;
4187
4188 if (m)
4189 {
48d502e1
BS
4190 struct elf_link_hash_entry *h;
4191
e36284ab
AM
4192 /* Obtain the pointer to the __stacksize symbol. */
4193 h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize",
4194 FALSE, FALSE, FALSE);
4195 if (h)
48d502e1 4196 {
48d502e1
BS
4197 while (h->root.type == bfd_link_hash_indirect
4198 || h->root.type == bfd_link_hash_warning)
e36284ab 4199 h = (struct elf_link_hash_entry *) h->root.u.i.link;
48d502e1 4200 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
e36284ab 4201 }
48d502e1 4202
e36284ab
AM
4203 /* Set the header p_memsz from the symbol value. We
4204 intentionally ignore the symbol section. */
4205 if (h && h->root.type == bfd_link_hash_defined)
4206 p->p_memsz = h->root.u.def.value;
4207 else
4208 p->p_memsz = DEFAULT_STACK_SIZE;
48d502e1 4209
e36284ab 4210 p->p_align = 8;
48d502e1
BS
4211 }
4212
4213 return TRUE;
4214}
4215
4216static bfd_boolean
4217elf32_bfinfdpic_finish_dynamic_sections (bfd *output_bfd,
4218 struct bfd_link_info *info)
4219{
4220 bfd *dynobj;
4221 asection *sdyn;
4222
4223 dynobj = elf_hash_table (info)->dynobj;
4224
4225 if (bfinfdpic_got_section (info))
4226 {
4227 BFD_ASSERT (bfinfdpic_gotrel_section (info)->size
4228 == (bfinfdpic_gotrel_section (info)->reloc_count
4229 * sizeof (Elf32_External_Rel)));
4230
4231 if (bfinfdpic_gotfixup_section (info))
4232 {
4233 struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot;
4234 bfd_vma got_value = hgot->root.u.def.value
4235 + hgot->root.u.def.section->output_section->vma
4236 + hgot->root.u.def.section->output_offset;
4237
4238 _bfinfdpic_add_rofixup (output_bfd, bfinfdpic_gotfixup_section (info),
4239 got_value, 0);
4240
4241 if (bfinfdpic_gotfixup_section (info)->size
4242 != (bfinfdpic_gotfixup_section (info)->reloc_count * 4))
0f64bb02
CM
4243 {
4244 (*_bfd_error_handler)
48d502e1 4245 ("LINKER BUG: .rofixup section size mismatch");
0f64bb02
CM
4246 return FALSE;
4247 }
4248 }
4249 }
48d502e1
BS
4250 if (elf_hash_table (info)->dynamic_sections_created)
4251 {
4252 BFD_ASSERT (bfinfdpic_pltrel_section (info)->size
4253 == (bfinfdpic_pltrel_section (info)->reloc_count
4254 * sizeof (Elf32_External_Rel)));
4255 }
4256
4257 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4258
4259 if (elf_hash_table (info)->dynamic_sections_created)
4260 {
4261 Elf32_External_Dyn * dyncon;
4262 Elf32_External_Dyn * dynconend;
4263
4264 BFD_ASSERT (sdyn != NULL);
4265
4266 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4267 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4268
4269 for (; dyncon < dynconend; dyncon++)
4270 {
4271 Elf_Internal_Dyn dyn;
4272
4273 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4274
4275 switch (dyn.d_tag)
4276 {
4277 default:
4278 break;
4279
4280 case DT_PLTGOT:
4281 dyn.d_un.d_ptr = bfinfdpic_got_section (info)->output_section->vma
4282 + bfinfdpic_got_section (info)->output_offset
4283 + bfinfdpic_got_initial_offset (info);
4284 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4285 break;
4286
4287 case DT_JMPREL:
4288 dyn.d_un.d_ptr = bfinfdpic_pltrel_section (info)
4289 ->output_section->vma
4290 + bfinfdpic_pltrel_section (info)->output_offset;
4291 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4292 break;
4293
4294 case DT_PLTRELSZ:
4295 dyn.d_un.d_val = bfinfdpic_pltrel_section (info)->size;
4296 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4297 break;
4298 }
4299 }
4300 }
4301
4302 return TRUE;
4303}
4304
4305/* Adjust a symbol defined by a dynamic object and referenced by a
4306 regular object. */
4307
4308static bfd_boolean
4309elf32_bfinfdpic_adjust_dynamic_symbol
4310(struct bfd_link_info *info ATTRIBUTE_UNUSED,
4311 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
4312{
4313 bfd * dynobj;
4314
4315 dynobj = elf_hash_table (info)->dynobj;
4316
4317 /* Make sure we know what is going on here. */
4318 BFD_ASSERT (dynobj != NULL
4319 && (h->u.weakdef != NULL
4320 || (h->def_dynamic
4321 && h->ref_regular
4322 && !h->def_regular)));
4323
4324 /* If this is a weak symbol, and there is a real definition, the
4325 processor independent code will have arranged for us to see the
4326 real definition first, and we can just use the same value. */
4327 if (h->u.weakdef != NULL)
4328 {
4329 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4330 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4331 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4332 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4333 }
0f64bb02
CM
4334
4335 return TRUE;
4336}
4337
48d502e1
BS
4338/* Perform any actions needed for dynamic symbols. */
4339
4340static bfd_boolean
4341elf32_bfinfdpic_finish_dynamic_symbol
4342(bfd *output_bfd ATTRIBUTE_UNUSED,
4343 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4344 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED,
4345 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
0f64bb02 4346{
48d502e1
BS
4347 return TRUE;
4348}
0f64bb02 4349
48d502e1
BS
4350/* Decide whether to attempt to turn absptr or lsda encodings in
4351 shared libraries into pcrel within the given input section. */
0f64bb02 4352
48d502e1
BS
4353static bfd_boolean
4354bfinfdpic_elf_use_relative_eh_frame
4355(bfd *input_bfd ATTRIBUTE_UNUSED,
4356 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4357 asection *eh_frame_section ATTRIBUTE_UNUSED)
4358{
4359 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
4360 return FALSE;
4361}
0f64bb02 4362
48d502e1 4363/* Adjust the contents of an eh_frame_hdr section before they're output. */
0f64bb02 4364
48d502e1
BS
4365static bfd_byte
4366bfinfdpic_elf_encode_eh_address (bfd *abfd,
4367 struct bfd_link_info *info,
4368 asection *osec, bfd_vma offset,
4369 asection *loc_sec, bfd_vma loc_offset,
4370 bfd_vma *encoded)
4371{
4372 struct elf_link_hash_entry *h;
0f64bb02 4373
48d502e1
BS
4374 h = elf_hash_table (info)->hgot;
4375 BFD_ASSERT (h && h->root.type == bfd_link_hash_defined);
4376
4377 if (! h || (_bfinfdpic_osec_to_segment (abfd, osec)
4378 == _bfinfdpic_osec_to_segment (abfd, loc_sec->output_section)))
4379 return _bfd_elf_encode_eh_address (abfd, info, osec, offset,
4380 loc_sec, loc_offset, encoded);
4381
4382 BFD_ASSERT (_bfinfdpic_osec_to_segment (abfd, osec)
4383 == (_bfinfdpic_osec_to_segment
4384 (abfd, h->root.u.def.section->output_section)));
4385
4386 *encoded = osec->vma + offset
4387 - (h->root.u.def.value
4388 + h->root.u.def.section->output_section->vma
4389 + h->root.u.def.section->output_offset);
4390
4391 return DW_EH_PE_datarel | DW_EH_PE_sdata4;
0f64bb02
CM
4392}
4393
4394
48d502e1
BS
4395
4396/* Look through the relocs for a section during the first phase.
4397
4398 Besides handling virtual table relocs for gc, we have to deal with
4399 all sorts of PIC-related relocations. We describe below the
4400 general plan on how to handle such relocations, even though we only
4401 collect information at this point, storing them in hash tables for
4402 perusal of later passes.
4403
4404 32 relocations are propagated to the linker output when creating
4405 position-independent output. LO16 and HI16 relocations are not
4406 supposed to be encountered in this case.
4407
4408 LABEL16 should always be resolvable by the linker, since it's only
4409 used by branches.
4410
4411 LABEL24, on the other hand, is used by calls. If it turns out that
4412 the target of a call is a dynamic symbol, a PLT entry must be
4413 created for it, which triggers the creation of a private function
4414 descriptor and, unless lazy binding is disabled, a lazy PLT entry.
4415
4416 GPREL relocations require the referenced symbol to be in the same
4417 segment as _gp, but this can only be checked later.
4418
4419 All GOT, GOTOFF and FUNCDESC relocations require a .got section to
4420 exist. LABEL24 might as well, since it may require a PLT entry,
4421 that will require a got.
4422
4423 Non-FUNCDESC GOT relocations require a GOT entry to be created
4424 regardless of whether the symbol is dynamic. However, since a
4425 global symbol that turns out to not be exported may have the same
4426 address of a non-dynamic symbol, we don't assign GOT entries at
4427 this point, such that we can share them in this case. A relocation
4428 for the GOT entry always has to be created, be it to offset a
4429 private symbol by the section load address, be it to get the symbol
4430 resolved dynamically.
4431
4432 FUNCDESC GOT relocations require a GOT entry to be created, and
4433 handled as if a FUNCDESC relocation was applied to the GOT entry in
4434 an object file.
4435
4436 FUNCDESC relocations referencing a symbol that turns out to NOT be
4437 dynamic cause a private function descriptor to be created. The
4438 FUNCDESC relocation then decays to a 32 relocation that points at
4439 the private descriptor. If the symbol is dynamic, the FUNCDESC
4440 relocation is propagated to the linker output, such that the
4441 dynamic linker creates the canonical descriptor, pointing to the
4442 dynamically-resolved definition of the function.
4443
4444 Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic
4445 symbols that are assigned to the same segment as the GOT, but we
4446 can only check this later, after we know the complete set of
4447 symbols defined and/or exported.
4448
4449 FUNCDESC GOTOFF relocations require a function descriptor to be
4450 created and, unless lazy binding is disabled or the symbol is not
4451 dynamic, a lazy PLT entry. Since we can't tell at this point
4452 whether a symbol is going to be dynamic, we have to decide later
4453 whether to create a lazy PLT entry or bind the descriptor directly
4454 to the private function.
4455
4456 FUNCDESC_VALUE relocations are not supposed to be present in object
4457 files, but they may very well be simply propagated to the linker
4458 output, since they have no side effect.
4459
4460
4461 A function descriptor always requires a FUNCDESC_VALUE relocation.
4462 Whether it's in .plt.rel or not depends on whether lazy binding is
4463 enabled and on whether the referenced symbol is dynamic.
4464
4465 The existence of a lazy PLT requires the resolverStub lazy PLT
4466 entry to be present.
4467
4468
4469 As for assignment of GOT, PLT and lazy PLT entries, and private
4470 descriptors, we might do them all sequentially, but we can do
4471 better than that. For example, we can place GOT entries and
4472 private function descriptors referenced using 12-bit operands
4473 closer to the PIC register value, such that these relocations don't
4474 overflow. Those that are only referenced with LO16 relocations
4475 could come next, but we may as well place PLT-required function
4476 descriptors in the 12-bit range to make them shorter. Symbols
4477 referenced with LO16/HI16 may come next, but we may place
4478 additional function descriptors in the 16-bit range if we can
4479 reliably tell that we've already placed entries that are ever
4480 referenced with only LO16. PLT entries are therefore generated as
4481 small as possible, while not introducing relocation overflows in
4482 GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be
4483 generated before or after PLT entries, but not intermingled with
4484 them, such that we can have more lazy PLT entries in range for a
4485 branch to the resolverStub. The resolverStub should be emitted at
4486 the most distant location from the first lazy PLT entry such that
4487 it's still in range for a branch, or closer, if there isn't a need
4488 for so many lazy PLT entries. Additional lazy PLT entries may be
4489 emitted after the resolverStub, as long as branches are still in
4490 range. If the branch goes out of range, longer lazy PLT entries
4491 are emitted.
4492
4493 We could further optimize PLT and lazy PLT entries by giving them
4494 priority in assignment to closer-to-gr17 locations depending on the
4495 number of occurrences of references to them (assuming a function
4496 that's called more often is more important for performance, so its
4497 PLT entry should be faster), or taking hints from the compiler.
4498 Given infinite time and money... :-) */
0f64bb02
CM
4499
4500static bfd_boolean
48d502e1
BS
4501bfinfdpic_check_relocs (bfd *abfd, struct bfd_link_info *info,
4502 asection *sec, const Elf_Internal_Rela *relocs)
0f64bb02
CM
4503{
4504 Elf_Internal_Shdr *symtab_hdr;
5582a088 4505 struct elf_link_hash_entry **sym_hashes;
48d502e1
BS
4506 const Elf_Internal_Rela *rel;
4507 const Elf_Internal_Rela *rel_end;
0f64bb02 4508 bfd *dynobj;
48d502e1 4509 struct bfinfdpic_relocs_info *picrel;
0f64bb02 4510
48d502e1 4511 if (info->relocatable)
0f64bb02
CM
4512 return TRUE;
4513
4514 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4515 sym_hashes = elf_sym_hashes (abfd);
0f64bb02 4516
48d502e1
BS
4517 dynobj = elf_hash_table (info)->dynobj;
4518 rel_end = relocs + sec->reloc_count;
4519 for (rel = relocs; rel < rel_end; rel++)
0f64bb02 4520 {
0f64bb02 4521 struct elf_link_hash_entry *h;
48d502e1
BS
4522 unsigned long r_symndx;
4523
4524 r_symndx = ELF32_R_SYM (rel->r_info);
4525 if (r_symndx < symtab_hdr->sh_info)
4526 h = NULL;
4527 else
4528 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
0f64bb02
CM
4529
4530 switch (ELF32_R_TYPE (rel->r_info))
4531 {
48d502e1
BS
4532 case R_BFIN_GOT17M4:
4533 case R_BFIN_GOTHI:
4534 case R_BFIN_GOTLO:
4535 case R_BFIN_FUNCDESC_GOT17M4:
4536 case R_BFIN_FUNCDESC_GOTHI:
4537 case R_BFIN_FUNCDESC_GOTLO:
4538 case R_BFIN_GOTOFF17M4:
4539 case R_BFIN_GOTOFFHI:
4540 case R_BFIN_GOTOFFLO:
4541 case R_BFIN_FUNCDESC_GOTOFF17M4:
4542 case R_BFIN_FUNCDESC_GOTOFFHI:
4543 case R_BFIN_FUNCDESC_GOTOFFLO:
4544 case R_BFIN_FUNCDESC:
4545 case R_BFIN_FUNCDESC_VALUE:
4546 if (! IS_FDPIC (abfd))
4547 goto bad_reloc;
4548 /* Fall through. */
4549 case R_pcrel24:
4550 case R_pcrel24_jump_l:
4551 case R_byte4_data:
4552 if (IS_FDPIC (abfd) && ! dynobj)
0f64bb02 4553 {
48d502e1
BS
4554 elf_hash_table (info)->dynobj = dynobj = abfd;
4555 if (! _bfin_create_got_section (abfd, info))
4556 return FALSE;
0f64bb02 4557 }
48d502e1 4558 if (! IS_FDPIC (abfd))
0f64bb02 4559 {
48d502e1
BS
4560 picrel = NULL;
4561 break;
4562 }
4563 if (h != NULL)
4564 {
4565 if (h->dynindx == -1)
4566 switch (ELF_ST_VISIBILITY (h->other))
4567 {
4568 case STV_INTERNAL:
4569 case STV_HIDDEN:
4570 break;
4571 default:
4572 bfd_elf_link_record_dynamic_symbol (info, h);
4573 break;
4574 }
4575 picrel
4576 = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info),
4577 abfd, h,
4578 rel->r_addend, INSERT);
0f64bb02 4579 }
48d502e1
BS
4580 else
4581 picrel = bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info
4582 (info), abfd, r_symndx,
4583 rel->r_addend, INSERT);
4584 if (! picrel)
4585 return FALSE;
0f64bb02 4586 break;
48d502e1 4587
0f64bb02 4588 default:
48d502e1 4589 picrel = NULL;
0f64bb02
CM
4590 break;
4591 }
48d502e1
BS
4592
4593 switch (ELF32_R_TYPE (rel->r_info))
4594 {
4595 case R_pcrel24:
4596 case R_pcrel24_jump_l:
4597 if (IS_FDPIC (abfd))
4598 picrel->call = 1;
4599 break;
4600
4601 case R_BFIN_FUNCDESC_VALUE:
4602 picrel->relocsfdv++;
4603 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC)
4604 picrel->relocs32--;
4605 /* Fall through. */
4606
4607 case R_byte4_data:
4608 if (! IS_FDPIC (abfd))
4609 break;
4610
4611 picrel->sym = 1;
4612 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC)
4613 picrel->relocs32++;
4614 break;
4615
4616 case R_BFIN_GOT17M4:
4617 picrel->got17m4 = 1;
4618 break;
4619
4620 case R_BFIN_GOTHI:
4621 case R_BFIN_GOTLO:
4622 picrel->gothilo = 1;
4623 break;
4624
4625 case R_BFIN_FUNCDESC_GOT17M4:
4626 picrel->fdgot17m4 = 1;
4627 break;
4628
4629 case R_BFIN_FUNCDESC_GOTHI:
4630 case R_BFIN_FUNCDESC_GOTLO:
4631 picrel->fdgothilo = 1;
4632 break;
4633
4634 case R_BFIN_GOTOFF17M4:
4635 case R_BFIN_GOTOFFHI:
4636 case R_BFIN_GOTOFFLO:
4637 picrel->gotoff = 1;
4638 break;
4639
4640 case R_BFIN_FUNCDESC_GOTOFF17M4:
4641 picrel->fdgoff17m4 = 1;
4642 break;
4643
4644 case R_BFIN_FUNCDESC_GOTOFFHI:
4645 case R_BFIN_FUNCDESC_GOTOFFLO:
4646 picrel->fdgoffhilo = 1;
4647 break;
4648
4649 case R_BFIN_FUNCDESC:
4650 picrel->fd = 1;
4651 picrel->relocsfd++;
4652 break;
4653
4654 /* This relocation describes the C++ object vtable hierarchy.
4655 Reconstruct it for later use during GC. */
4656 case R_BFIN_GNU_VTINHERIT:
4657 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4658 return FALSE;
4659 break;
4660
4661 /* This relocation describes which C++ vtable entries are actually
4662 used. Record for later use during GC. */
4663 case R_BFIN_GNU_VTENTRY:
d17e0c6e
JB
4664 BFD_ASSERT (h != NULL);
4665 if (h != NULL
4666 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
48d502e1
BS
4667 return FALSE;
4668 break;
4669
4670 case R_huimm16:
4671 case R_luimm16:
4672 case R_pcrel12_jump_s:
4673 case R_pcrel10:
4674 break;
4675
4676 default:
4677 bad_reloc:
4678 (*_bfd_error_handler)
4679 (_("%B: unsupported relocation type %i"),
4680 abfd, ELF32_R_TYPE (rel->r_info));
4681 return FALSE;
4682 }
0f64bb02
CM
4683 }
4684
4685 return TRUE;
4686}
4687
48d502e1
BS
4688/* Set the right machine number for a Blackfin ELF file. */
4689
4690static bfd_boolean
4691elf32_bfin_object_p (bfd *abfd)
4692{
4693 bfd_default_set_arch_mach (abfd, bfd_arch_bfin, 0);
4694 return (((elf_elfheader (abfd)->e_flags & EF_BFIN_FDPIC) != 0)
4695 == (IS_FDPIC (abfd)));
4696}
0f64bb02 4697
0f64bb02 4698static bfd_boolean
48d502e1 4699elf32_bfin_set_private_flags (bfd * abfd, flagword flags)
0f64bb02 4700{
48d502e1
BS
4701 elf_elfheader (abfd)->e_flags = flags;
4702 elf_flags_init (abfd) = TRUE;
4703 return TRUE;
4704}
0f64bb02 4705
48d502e1
BS
4706/* Copy backend specific data from one object module to another. */
4707
4708static bfd_boolean
4709bfin_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
4710{
0f64bb02
CM
4711 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4712 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4713 return TRUE;
4714
48d502e1
BS
4715 BFD_ASSERT (!elf_flags_init (obfd)
4716 || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags);
0f64bb02 4717
48d502e1
BS
4718 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
4719 elf_flags_init (obfd) = TRUE;
104d59d1
JM
4720
4721 /* Copy object attributes. */
4722 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4723
0f64bb02
CM
4724 return TRUE;
4725}
4726
0f64bb02 4727static bfd_boolean
48d502e1 4728elf32_bfinfdpic_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
0f64bb02 4729{
48d502e1
BS
4730 unsigned i;
4731
4732 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4733 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4734 return TRUE;
4735
4736 if (! bfin_elf_copy_private_bfd_data (ibfd, obfd))
4737 return FALSE;
4738
4739 if (! elf_tdata (ibfd) || ! elf_tdata (ibfd)->phdr
4740 || ! elf_tdata (obfd) || ! elf_tdata (obfd)->phdr)
4741 return TRUE;
4742
4743 /* Copy the stack size. */
4744 for (i = 0; i < elf_elfheader (ibfd)->e_phnum; i++)
4745 if (elf_tdata (ibfd)->phdr[i].p_type == PT_GNU_STACK)
4746 {
4747 Elf_Internal_Phdr *iphdr = &elf_tdata (ibfd)->phdr[i];
4748
4749 for (i = 0; i < elf_elfheader (obfd)->e_phnum; i++)
4750 if (elf_tdata (obfd)->phdr[i].p_type == PT_GNU_STACK)
4751 {
4752 memcpy (&elf_tdata (obfd)->phdr[i], iphdr, sizeof (*iphdr));
4753
4754 /* Rewrite the phdrs, since we're only called after they
4755 were first written. */
4756 if (bfd_seek (obfd, (bfd_signed_vma) get_elf_backend_data (obfd)
4757 ->s->sizeof_ehdr, SEEK_SET) != 0
4758 || get_elf_backend_data (obfd)->s
4759 ->write_out_phdrs (obfd, elf_tdata (obfd)->phdr,
4760 elf_elfheader (obfd)->e_phnum) != 0)
4761 return FALSE;
4762 break;
4763 }
4764
4765 break;
4766 }
4767
0f64bb02
CM
4768 return TRUE;
4769}
4770
4771
4772/* Display the flags field. */
4773static bfd_boolean
4774elf32_bfin_print_private_bfd_data (bfd * abfd, PTR ptr)
4775{
4776 FILE *file = (FILE *) ptr;
48d502e1 4777 flagword flags;
0f64bb02
CM
4778
4779 BFD_ASSERT (abfd != NULL && ptr != NULL);
4780
4781 /* Print normal ELF private data. */
4782 _bfd_elf_print_private_bfd_data (abfd, ptr);
4783
48d502e1 4784 flags = elf_elfheader (abfd)->e_flags;
0f64bb02
CM
4785
4786 /* xgettext:c-format */
4787 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4788
48d502e1
BS
4789 if (flags & EF_BFIN_PIC)
4790 fprintf (file, " -fpic");
4791
4792 if (flags & EF_BFIN_FDPIC)
4793 fprintf (file, " -mfdpic");
4794
0f64bb02
CM
4795 fputc ('\n', file);
4796
4797 return TRUE;
4798}
4799
48d502e1
BS
4800/* Merge backend specific data from an object file to the output
4801 object file when linking. */
4802
4803static bfd_boolean
4804elf32_bfin_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4805{
7a84e3da 4806 flagword old_flags, new_flags;
48d502e1
BS
4807 bfd_boolean error = FALSE;
4808
4809 new_flags = elf_elfheader (ibfd)->e_flags;
4810 old_flags = elf_elfheader (obfd)->e_flags;
4811
4812 if (new_flags & EF_BFIN_FDPIC)
4813 new_flags &= ~EF_BFIN_PIC;
4814
4815#ifdef DEBUG
4816 (*_bfd_error_handler) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s",
4817 old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no",
4818 bfd_get_filename (ibfd));
4819#endif
4820
4821 if (!elf_flags_init (obfd)) /* First call, no flags set. */
4822 {
4823 elf_flags_init (obfd) = TRUE;
7a84e3da 4824 elf_elfheader (obfd)->e_flags = new_flags;
48d502e1
BS
4825 }
4826
7a84e3da 4827 if (((new_flags & EF_BFIN_FDPIC) == 0) != (! IS_FDPIC (obfd)))
48d502e1
BS
4828 {
4829 error = TRUE;
4830 if (IS_FDPIC (obfd))
4831 (*_bfd_error_handler)
4832 (_("%s: cannot link non-fdpic object file into fdpic executable"),
4833 bfd_get_filename (ibfd));
4834 else
4835 (*_bfd_error_handler)
4836 (_("%s: cannot link fdpic object file into non-fdpic executable"),
4837 bfd_get_filename (ibfd));
4838 }
4839
4840 if (error)
4841 bfd_set_error (bfd_error_bad_value);
4842
4843 return !error;
4844}
4845\f
0f64bb02
CM
4846/* bfin ELF linker hash entry. */
4847
4848struct bfin_link_hash_entry
4849{
4850 struct elf_link_hash_entry root;
4851
4852 /* Number of PC relative relocs copied for this symbol. */
4853 struct bfin_pcrel_relocs_copied *pcrel_relocs_copied;
4854};
4855
4856/* bfin ELF linker hash table. */
4857
4858struct bfin_link_hash_table
4859{
4860 struct elf_link_hash_table root;
4861
4862 /* Small local sym to section mapping cache. */
4863 struct sym_sec_cache sym_sec;
4864};
4865
4866#define bfin_hash_entry(ent) ((struct bfin_link_hash_entry *) (ent))
4867
4868static struct bfd_hash_entry *
4869bfin_link_hash_newfunc (struct bfd_hash_entry *entry,
48d502e1 4870 struct bfd_hash_table *table, const char *string)
0f64bb02
CM
4871{
4872 struct bfd_hash_entry *ret = entry;
4873
4874 /* Allocate the structure if it has not already been allocated by a
4875 subclass. */
4876 if (ret == NULL)
4877 ret = bfd_hash_allocate (table, sizeof (struct bfin_link_hash_entry));
4878 if (ret == NULL)
4879 return ret;
4880
4881 /* Call the allocation method of the superclass. */
4882 ret = _bfd_elf_link_hash_newfunc (ret, table, string);
4883 if (ret != NULL)
4884 bfin_hash_entry (ret)->pcrel_relocs_copied = NULL;
4885
4886 return ret;
4887}
4888
4889/* Create an bfin ELF linker hash table. */
4890
4891static struct bfd_link_hash_table *
4892bfin_link_hash_table_create (bfd * abfd)
4893{
4894 struct bfin_link_hash_table *ret;
4895 bfd_size_type amt = sizeof (struct bfin_link_hash_table);
4896
48d502e1
BS
4897 ret = bfd_zalloc (abfd, amt);
4898 if (ret == NULL)
0f64bb02
CM
4899 return NULL;
4900
4901 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
66eb6687 4902 bfin_link_hash_newfunc,
48d502e1 4903 sizeof (struct elf_link_hash_entry)))
0f64bb02
CM
4904 {
4905 free (ret);
4906 return NULL;
4907 }
4908
4909 ret->sym_sec.abfd = NULL;
4910
4911 return &ret->root.root;
4912}
4913
4914/* The size in bytes of an entry in the procedure linkage table. */
4915
4916/* Finish up the dynamic sections. */
4917
4918static bfd_boolean
4919bfin_finish_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
4920 struct bfd_link_info *info)
4921{
4922 bfd *dynobj;
4923 asection *sdyn;
4924
4925 dynobj = elf_hash_table (info)->dynobj;
4926
4927 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4928
4929 if (elf_hash_table (info)->dynamic_sections_created)
4930 {
4931 Elf32_External_Dyn *dyncon, *dynconend;
4932
4933 BFD_ASSERT (sdyn != NULL);
4934
4935 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4936 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4937 for (; dyncon < dynconend; dyncon++)
4938 {
4939 Elf_Internal_Dyn dyn;
4940
4941 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4942
4943 }
4944
4945 }
4946 return TRUE;
4947}
4948
4949/* Finish up dynamic symbol handling. We set the contents of various
4950 dynamic sections here. */
4951
4952static bfd_boolean
4953bfin_finish_dynamic_symbol (bfd * output_bfd,
4954 struct bfd_link_info *info,
4955 struct elf_link_hash_entry *h,
4956 Elf_Internal_Sym * sym)
4957{
4958 bfd *dynobj;
4959
4960 dynobj = elf_hash_table (info)->dynobj;
4961
4962 if (h->got.offset != (bfd_vma) - 1)
4963 {
4964 asection *sgot;
4965 asection *srela;
4966 Elf_Internal_Rela rela;
4967 bfd_byte *loc;
4968
4969 /* This symbol has an entry in the global offset table.
4970 Set it up. */
4971
4972 sgot = bfd_get_section_by_name (dynobj, ".got");
4973 srela = bfd_get_section_by_name (dynobj, ".rela.got");
4974 BFD_ASSERT (sgot != NULL && srela != NULL);
4975
4976 rela.r_offset = (sgot->output_section->vma
4977 + sgot->output_offset
4978 + (h->got.offset & ~(bfd_vma) 1));
4979
4980 /* If this is a -Bsymbolic link, and the symbol is defined
4981 locally, we just want to emit a RELATIVE reloc. Likewise if
4982 the symbol was forced to be local because of a version file.
4983 The entry in the global offset table will already have been
4984 initialized in the relocate_section function. */
4985 if (info->shared
4986 && (info->symbolic
4987 || h->dynindx == -1 || h->forced_local) && h->def_regular)
4988 {
5592d7ec 4989 fprintf(stderr, "*** check this relocation %s\n", __FUNCTION__);
0f64bb02
CM
4990 rela.r_info = ELF32_R_INFO (0, R_pcrel24);
4991 rela.r_addend = bfd_get_signed_32 (output_bfd,
4992 (sgot->contents
4993 +
4994 (h->got.
4995 offset & ~(bfd_vma) 1)));
4996 }
4997 else
4998 {
4999 bfd_put_32 (output_bfd, (bfd_vma) 0,
5000 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
5001 rela.r_info = ELF32_R_INFO (h->dynindx, R_got);
5002 rela.r_addend = 0;
5003 }
5004
5005 loc = srela->contents;
5006 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
5007 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
5008 }
5009
5010 if (h->needs_copy)
5011 {
5012 BFD_ASSERT (0);
5013 }
5014 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
5592d7ec 5015 if (strcmp (h->root.root.string, "__DYNAMIC") == 0
22edb2f1 5016 || h == elf_hash_table (info)->hgot)
0f64bb02
CM
5017 sym->st_shndx = SHN_ABS;
5018
5019 return TRUE;
5020}
5021
5022/* Adjust a symbol defined by a dynamic object and referenced by a
5023 regular object. The current definition is in some section of the
5024 dynamic object, but we're not including those sections. We have to
5025 change the definition to something the rest of the link can
5026 understand. */
5027
5028static bfd_boolean
5029bfin_adjust_dynamic_symbol (struct bfd_link_info *info,
5030 struct elf_link_hash_entry *h)
5031{
5032 bfd *dynobj;
5033 asection *s;
5034 unsigned int power_of_two;
5035
5036 dynobj = elf_hash_table (info)->dynobj;
5037
5038 /* Make sure we know what is going on here. */
5039 BFD_ASSERT (dynobj != NULL
5040 && (h->needs_plt
5041 || h->u.weakdef != NULL
5042 || (h->def_dynamic && h->ref_regular && !h->def_regular)));
5043
5044 /* If this is a function, put it in the procedure linkage table. We
5045 will fill in the contents of the procedure linkage table later,
5046 when we know the address of the .got section. */
5047 if (h->type == STT_FUNC || h->needs_plt)
5048 {
5049 BFD_ASSERT(0);
5050 }
5051
5052 /* If this is a weak symbol, and there is a real definition, the
5053 processor independent code will have arranged for us to see the
5054 real definition first, and we can just use the same value. */
5055 if (h->u.weakdef != NULL)
5056 {
5057 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5058 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5059 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5060 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5061 return TRUE;
5062 }
5063
5064 /* This is a reference to a symbol defined by a dynamic object which
5065 is not a function. */
5066
5067 /* If we are creating a shared library, we must presume that the
5068 only references to the symbol are via the global offset table.
5069 For such cases we need not do anything here; the relocations will
5070 be handled correctly by relocate_section. */
5071 if (info->shared)
5072 return TRUE;
5073
5074 /* We must allocate the symbol in our .dynbss section, which will
5075 become part of the .bss section of the executable. There will be
5076 an entry for this symbol in the .dynsym section. The dynamic
5077 object will contain position independent code, so all references
5078 from the dynamic object to this symbol will go through the global
5079 offset table. The dynamic linker will use the .dynsym entry to
5080 determine the address it must put in the global offset table, so
5081 both the dynamic object and the regular object will refer to the
5082 same memory location for the variable. */
5083
5084 s = bfd_get_section_by_name (dynobj, ".dynbss");
5085 BFD_ASSERT (s != NULL);
5086
5087 /* We must generate a R_68K_COPY reloc to tell the dynamic linker to
5088 copy the initial value out of the dynamic object and into the
5089 runtime process image. We need to remember the offset into the
5090 .rela.bss section we are going to use. */
5091 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5092 {
5093 asection *srel;
5094
5095 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
5096 BFD_ASSERT (srel != NULL);
5097 srel->size += sizeof (Elf32_External_Rela);
5098 h->needs_copy = 1;
5099 }
5100
5101 /* We need to figure out the alignment required for this symbol. I
5102 have no idea how ELF linkers handle this. */
5103 power_of_two = bfd_log2 (h->size);
5104 if (power_of_two > 3)
5105 power_of_two = 3;
5106
5107 /* Apply the required alignment. */
5108 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
5109 if (power_of_two > bfd_get_section_alignment (dynobj, s))
5110 {
5111 if (!bfd_set_section_alignment (dynobj, s, power_of_two))
5112 return FALSE;
5113 }
5114
5115 /* Define the symbol as being at this point in the section. */
5116 h->root.u.def.section = s;
5117 h->root.u.def.value = s->size;
5118
5119 /* Increment the section size to make room for the symbol. */
5120 s->size += h->size;
5121
5122 return TRUE;
5123}
5124
5125/* The bfin linker needs to keep track of the number of relocs that it
5126 decides to copy in check_relocs for each symbol. This is so that it
5127 can discard PC relative relocs if it doesn't need them when linking
5128 with -Bsymbolic. We store the information in a field extending the
5129 regular ELF linker hash table. */
5130
5131/* This structure keeps track of the number of PC relative relocs we have
5132 copied for a given symbol. */
5133
5134struct bfin_pcrel_relocs_copied
5135{
5136 /* Next section. */
5137 struct bfin_pcrel_relocs_copied *next;
5138 /* A section in dynobj. */
5139 asection *section;
5140 /* Number of relocs copied in this section. */
5141 bfd_size_type count;
5142};
5143
5144/* This function is called via elf_link_hash_traverse if we are
5145 creating a shared object. In the -Bsymbolic case it discards the
5146 space allocated to copy PC relative relocs against symbols which
5147 are defined in regular objects. For the normal shared case, it
5148 discards space for pc-relative relocs that have become local due to
5149 symbol visibility changes. We allocated space for them in the
5150 check_relocs routine, but we won't fill them in in the
5151 relocate_section routine.
5152
5153 We also check whether any of the remaining relocations apply
5154 against a readonly section, and set the DF_TEXTREL flag in this
5155 case. */
5156
5157static bfd_boolean
5158bfin_discard_copies (struct elf_link_hash_entry *h, PTR inf)
5159{
5160 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5161 struct bfin_pcrel_relocs_copied *s;
5162
5163 if (h->root.type == bfd_link_hash_warning)
5164 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5165
5166 if (!h->def_regular || (!info->symbolic && !h->forced_local))
5167 {
5168 if ((info->flags & DF_TEXTREL) == 0)
5169 {
5170 /* Look for relocations against read-only sections. */
5171 for (s = bfin_hash_entry (h)->pcrel_relocs_copied;
5172 s != NULL; s = s->next)
5173 if ((s->section->flags & SEC_READONLY) != 0)
5174 {
5175 info->flags |= DF_TEXTREL;
5176 break;
5177 }
5178 }
5179
5180 return TRUE;
5181 }
5182
5183 for (s = bfin_hash_entry (h)->pcrel_relocs_copied;
5184 s != NULL; s = s->next)
5185 s->section->size -= s->count * sizeof (Elf32_External_Rela);
5186
5187 return TRUE;
5188}
5189
0f64bb02
CM
5190static bfd_boolean
5191bfin_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
5192 struct bfd_link_info *info)
5193{
5194 bfd *dynobj;
5195 asection *s;
5196 bfd_boolean relocs;
5197
5198 dynobj = elf_hash_table (info)->dynobj;
5199 BFD_ASSERT (dynobj != NULL);
5200
5201 if (elf_hash_table (info)->dynamic_sections_created)
5202 {
5203 /* Set the contents of the .interp section to the interpreter. */
5204 if (info->executable)
5205 {
5206 s = bfd_get_section_by_name (dynobj, ".interp");
5207 BFD_ASSERT (s != NULL);
5208 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5209 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5210 }
5211 }
5212 else
5213 {
5214 /* We may have created entries in the .rela.got section.
5215 However, if we are not creating the dynamic sections, we will
5216 not actually use these entries. Reset the size of .rela.got,
5217 which will cause it to get stripped from the output file
5218 below. */
5219 s = bfd_get_section_by_name (dynobj, ".rela.got");
5220 if (s != NULL)
5221 s->size = 0;
5222 }
5223
5224 /* If this is a -Bsymbolic shared link, then we need to discard all
5225 PC relative relocs against symbols defined in a regular object.
5226 For the normal shared case we discard the PC relative relocs
5227 against symbols that have become local due to visibility changes.
5228 We allocated space for them in the check_relocs routine, but we
5229 will not fill them in in the relocate_section routine. */
5230 if (info->shared)
5231 elf_link_hash_traverse (elf_hash_table (info),
5232 bfin_discard_copies, (PTR) info);
5233
5234 /* The check_relocs and adjust_dynamic_symbol entry points have
5235 determined the sizes of the various dynamic sections. Allocate
5236 memory for them. */
5237 relocs = FALSE;
5238 for (s = dynobj->sections; s != NULL; s = s->next)
5239 {
5240 const char *name;
5241 bfd_boolean strip;
5242
5243 if ((s->flags & SEC_LINKER_CREATED) == 0)
5244 continue;
5245
5246 /* It's OK to base decisions on the section name, because none
5247 of the dynobj section names depend upon the input files. */
5248 name = bfd_get_section_name (dynobj, s);
5249
5250 strip = FALSE;
5251
0112cd26 5252 if (CONST_STRNEQ (name, ".rela"))
0f64bb02
CM
5253 {
5254 if (s->size == 0)
5255 {
5256 /* If we don't need this section, strip it from the
5257 output file. This is mostly to handle .rela.bss and
5258 .rela.plt. We must create both sections in
5259 create_dynamic_sections, because they must be created
5260 before the linker maps input sections to output
5261 sections. The linker does that before
5262 adjust_dynamic_symbol is called, and it is that
5263 function which decides whether anything needs to go
5264 into these sections. */
5265 strip = TRUE;
5266 }
5267 else
5268 {
5269 relocs = TRUE;
5270
5271 /* We use the reloc_count field as a counter if we need
5272 to copy relocs into the output file. */
5273 s->reloc_count = 0;
5274 }
5275 }
0112cd26 5276 else if (! CONST_STRNEQ (name, ".got"))
0f64bb02
CM
5277 {
5278 /* It's not one of our sections, so don't allocate space. */
5279 continue;
5280 }
5281
5282 if (strip)
5283 {
5284 s->flags |= SEC_EXCLUDE;
5285 continue;
5286 }
5287
5288 /* Allocate memory for the section contents. */
5289 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
5290 Unused entries should be reclaimed before the section's contents
5291 are written out, but at the moment this does not happen. Thus in
5292 order to prevent writing out garbage, we initialise the section's
5293 contents to zero. */
5294 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
5295 if (s->contents == NULL && s->size != 0)
5296 return FALSE;
5297 }
5298
5299 if (elf_hash_table (info)->dynamic_sections_created)
5300 {
5301 /* Add some entries to the .dynamic section. We fill in the
5302 values later, in bfin_finish_dynamic_sections, but we
5303 must add the entries now so that we get the correct size for
5304 the .dynamic section. The DT_DEBUG entry is filled in by the
5305 dynamic linker and used by the debugger. */
5306#define add_dynamic_entry(TAG, VAL) \
5307 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5308
5309 if (!info->shared)
5310 {
5311 if (!add_dynamic_entry (DT_DEBUG, 0))
5312 return FALSE;
5313 }
5314
5315
5316 if (relocs)
5317 {
5318 if (!add_dynamic_entry (DT_RELA, 0)
5319 || !add_dynamic_entry (DT_RELASZ, 0)
5320 || !add_dynamic_entry (DT_RELAENT,
5321 sizeof (Elf32_External_Rela)))
5322 return FALSE;
5323 }
5324
5325 if ((info->flags & DF_TEXTREL) != 0)
5326 {
5327 if (!add_dynamic_entry (DT_TEXTREL, 0))
5328 return FALSE;
5329 }
5330 }
5331#undef add_dynamic_entry
5332
5333 return TRUE;
5334}
48d502e1 5335\f
0f64bb02
CM
5336/* Given a .data section and a .emreloc in-memory section, store
5337 relocation information into the .emreloc section which can be
5338 used at runtime to relocate the section. This is called by the
5339 linker when the --embedded-relocs switch is used. This is called
5340 after the add_symbols entry point has been called for all the
5341 objects, and before the final_link entry point is called. */
5342
3b55e94a
BS
5343bfd_boolean bfd_bfin_elf32_create_embedded_relocs
5344 PARAMS ((bfd *, struct bfd_link_info *, asection *, asection *, char **));
5345
0f64bb02
CM
5346bfd_boolean
5347bfd_bfin_elf32_create_embedded_relocs (
5348 bfd *abfd,
5349 struct bfd_link_info *info,
5350 asection *datasec,
5351 asection *relsec,
5352 char **errmsg)
5353{
5354 Elf_Internal_Shdr *symtab_hdr;
5355 Elf_Internal_Sym *isymbuf = NULL;
5356 Elf_Internal_Rela *internal_relocs = NULL;
5357 Elf_Internal_Rela *irel, *irelend;
5358 bfd_byte *p;
5359 bfd_size_type amt;
5360
5361 BFD_ASSERT (! info->relocatable);
5362
5363 *errmsg = NULL;
5364
5365 if (datasec->reloc_count == 0)
5366 return TRUE;
5367
5368 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5369
5370 /* Get a copy of the native relocations. */
5371 internal_relocs = (_bfd_elf_link_read_relocs
5372 (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
5373 info->keep_memory));
5374 if (internal_relocs == NULL)
5375 goto error_return;
5376
5377 amt = (bfd_size_type) datasec->reloc_count * 12;
5378 relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt);
5379 if (relsec->contents == NULL)
5380 goto error_return;
5381
5382 p = relsec->contents;
5383
5384 irelend = internal_relocs + datasec->reloc_count;
5385 for (irel = internal_relocs; irel < irelend; irel++, p += 12)
5386 {
5387 asection *targetsec;
5388
5389 /* We are going to write a four byte longword into the runtime
5390 reloc section. The longword will be the address in the data
5391 section which must be relocated. It is followed by the name
5392 of the target section NUL-padded or truncated to 8
5393 characters. */
5394
5395 /* We can only relocate absolute longword relocs at run time. */
5396 if (ELF32_R_TYPE (irel->r_info) != (int) R_byte4_data)
5397 {
5398 *errmsg = _("unsupported reloc type");
5399 bfd_set_error (bfd_error_bad_value);
5400 goto error_return;
5401 }
5402
5403 /* Get the target section referred to by the reloc. */
5404 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5405 {
5406 /* A local symbol. */
5407 Elf_Internal_Sym *isym;
5408
5409 /* Read this BFD's local symbols if we haven't done so already. */
5410 if (isymbuf == NULL)
5411 {
5412 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5413 if (isymbuf == NULL)
5414 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5415 symtab_hdr->sh_info, 0,
5416 NULL, NULL, NULL);
5417 if (isymbuf == NULL)
5418 goto error_return;
5419 }
5420
5421 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5422 targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
5423 }
5424 else
5425 {
5426 unsigned long indx;
5427 struct elf_link_hash_entry *h;
5428
5429 /* An external symbol. */
5430 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5431 h = elf_sym_hashes (abfd)[indx];
5432 BFD_ASSERT (h != NULL);
5433 if (h->root.type == bfd_link_hash_defined
5434 || h->root.type == bfd_link_hash_defweak)
5435 targetsec = h->root.u.def.section;
5436 else
5437 targetsec = NULL;
5438 }
5439
5440 bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p);
5441 memset (p + 4, 0, 8);
5442 if (targetsec != NULL)
9ba4c445 5443 strncpy ((char *) p + 4, targetsec->output_section->name, 8);
0f64bb02
CM
5444 }
5445
5446 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
5447 free (isymbuf);
5448 if (internal_relocs != NULL
5449 && elf_section_data (datasec)->relocs != internal_relocs)
5450 free (internal_relocs);
5451 return TRUE;
5452
5453error_return:
5454 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
5455 free (isymbuf);
5456 if (internal_relocs != NULL
5457 && elf_section_data (datasec)->relocs != internal_relocs)
5458 free (internal_relocs);
5459 return FALSE;
5460}
48d502e1 5461\f
0f64bb02
CM
5462#define TARGET_LITTLE_SYM bfd_elf32_bfin_vec
5463#define TARGET_LITTLE_NAME "elf32-bfin"
5464#define ELF_ARCH bfd_arch_bfin
3b55e94a 5465#define ELF_MACHINE_CODE EM_BLACKFIN
0f64bb02
CM
5466#define ELF_MAXPAGESIZE 0x1000
5467#define elf_symbol_leading_char '_'
5468
5469#define bfd_elf32_bfd_reloc_type_lookup bfin_bfd_reloc_type_lookup
157090f7
AM
5470#define bfd_elf32_bfd_reloc_name_lookup \
5471 bfin_bfd_reloc_name_lookup
0f64bb02
CM
5472#define elf_info_to_howto bfin_info_to_howto
5473#define elf_info_to_howto_rel 0
48d502e1 5474#define elf_backend_object_p elf32_bfin_object_p
0f64bb02
CM
5475
5476#define bfd_elf32_bfd_is_local_label_name \
5477 bfin_is_local_label_name
5478#define bfin_hash_table(p) \
5479 ((struct bfin_link_hash_table *) (p)->hash)
5480
5481
5482
5483#define elf_backend_create_dynamic_sections \
5484 _bfd_elf_create_dynamic_sections
5485#define bfd_elf32_bfd_link_hash_table_create \
5486 bfin_link_hash_table_create
5487#define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link
5488
48d502e1 5489#define elf_backend_check_relocs bfin_check_relocs
0f64bb02
CM
5490#define elf_backend_adjust_dynamic_symbol \
5491 bfin_adjust_dynamic_symbol
5492#define elf_backend_size_dynamic_sections \
5493 bfin_size_dynamic_sections
5494#define elf_backend_relocate_section bfin_relocate_section
5495#define elf_backend_finish_dynamic_symbol \
5496 bfin_finish_dynamic_symbol
5497#define elf_backend_finish_dynamic_sections \
5498 bfin_finish_dynamic_sections
5499#define elf_backend_gc_mark_hook bfin_gc_mark_hook
5500#define elf_backend_gc_sweep_hook bfin_gc_sweep_hook
5501#define bfd_elf32_bfd_merge_private_bfd_data \
5502 elf32_bfin_merge_private_bfd_data
5503#define bfd_elf32_bfd_set_private_flags \
5504 elf32_bfin_set_private_flags
5505#define bfd_elf32_bfd_print_private_bfd_data \
5506 elf32_bfin_print_private_bfd_data
5507#define elf_backend_reloc_type_class elf32_bfin_reloc_type_class
5508#define elf_backend_can_gc_sections 1
5509#define elf_backend_can_refcount 1
5510#define elf_backend_want_got_plt 0
5511#define elf_backend_plt_readonly 1
5512#define elf_backend_want_plt_sym 0
5513#define elf_backend_got_header_size 12
5514#define elf_backend_rela_normal 1
5515
48d502e1
BS
5516#include "elf32-target.h"
5517
5518#undef TARGET_LITTLE_SYM
5519#define TARGET_LITTLE_SYM bfd_elf32_bfinfdpic_vec
5520#undef TARGET_LITTLE_NAME
5521#define TARGET_LITTLE_NAME "elf32-bfinfdpic"
5522#undef elf32_bed
5523#define elf32_bed elf32_bfinfdpic_bed
5524
5525#undef elf_backend_gc_sweep_hook
48d502e1
BS
5526
5527#undef elf_backend_got_header_size
5528#define elf_backend_got_header_size 0
5529
5530#undef elf_backend_relocate_section
5531#define elf_backend_relocate_section bfinfdpic_relocate_section
5532#undef elf_backend_check_relocs
5533#define elf_backend_check_relocs bfinfdpic_check_relocs
5534
5535#undef bfd_elf32_bfd_link_hash_table_create
5536#define bfd_elf32_bfd_link_hash_table_create \
5537 bfinfdpic_elf_link_hash_table_create
5538#undef elf_backend_always_size_sections
5539#define elf_backend_always_size_sections \
5540 elf32_bfinfdpic_always_size_sections
e36284ab
AM
5541#undef elf_backend_modify_program_headers
5542#define elf_backend_modify_program_headers \
5543 elf32_bfinfdpic_modify_program_headers
48d502e1
BS
5544#undef bfd_elf32_bfd_copy_private_bfd_data
5545#define bfd_elf32_bfd_copy_private_bfd_data \
5546 elf32_bfinfdpic_copy_private_bfd_data
5547
5548#undef elf_backend_create_dynamic_sections
5549#define elf_backend_create_dynamic_sections \
5550 elf32_bfinfdpic_create_dynamic_sections
5551#undef elf_backend_adjust_dynamic_symbol
5552#define elf_backend_adjust_dynamic_symbol \
5553 elf32_bfinfdpic_adjust_dynamic_symbol
5554#undef elf_backend_size_dynamic_sections
5555#define elf_backend_size_dynamic_sections \
5556 elf32_bfinfdpic_size_dynamic_sections
5557#undef elf_backend_finish_dynamic_symbol
5558#define elf_backend_finish_dynamic_symbol \
5559 elf32_bfinfdpic_finish_dynamic_symbol
5560#undef elf_backend_finish_dynamic_sections
5561#define elf_backend_finish_dynamic_sections \
5562 elf32_bfinfdpic_finish_dynamic_sections
5563
5564#undef elf_backend_can_make_relative_eh_frame
5565#define elf_backend_can_make_relative_eh_frame \
5566 bfinfdpic_elf_use_relative_eh_frame
5567#undef elf_backend_can_make_lsda_relative_eh_frame
5568#define elf_backend_can_make_lsda_relative_eh_frame \
5569 bfinfdpic_elf_use_relative_eh_frame
5570#undef elf_backend_encode_eh_address
5571#define elf_backend_encode_eh_address \
5572 bfinfdpic_elf_encode_eh_address
5573
5574#undef elf_backend_may_use_rel_p
5575#define elf_backend_may_use_rel_p 1
5576#undef elf_backend_may_use_rela_p
5577#define elf_backend_may_use_rela_p 1
5578/* We use REL for dynamic relocations only. */
5579#undef elf_backend_default_use_rela_p
5580#define elf_backend_default_use_rela_p 1
5581
5582#undef elf_backend_omit_section_dynsym
5583#define elf_backend_omit_section_dynsym _bfinfdpic_link_omit_section_dynsym
0f64bb02
CM
5584
5585#include "elf32-target.h"
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