* write.c (fixup_segment): Revert previous delta.
[binutils/dougsmingw.git] / bfd / elf32-score7.c
blobcd87ff34669d0c05b31599eea6d56e37c35b751f
1 /* 32-bit ELF support for S+core.
2 Copyright 2009, 2010 Free Software Foundation, Inc.
3 Contributed by
4 Brain.lin (brain.lin@sunplusct.com)
5 Mei Ligang (ligang@sunnorth.com.cn)
6 Pei-Lin Tsai (pltsai@sunplus.com)
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
23 MA 02110-1301, USA. */
25 #include "bfd.h"
26 #include "sysdep.h"
27 #include "libbfd.h"
28 #include "libiberty.h"
29 #include "elf-bfd.h"
30 #include "elf/score.h"
31 #include "elf/common.h"
32 #include "elf/internal.h"
33 #include "hashtab.h"
34 #include "elf32-score.h"
37 /* The SCORE ELF linker needs additional information for each symbol in
38 the global hash table. */
39 struct score_elf_link_hash_entry
41 struct elf_link_hash_entry root;
43 /* Number of R_SCORE_ABS32, R_SCORE_REL32 relocs against this symbol. */
44 unsigned int possibly_dynamic_relocs;
46 /* If the R_SCORE_ABS32, R_SCORE_REL32 reloc is against a readonly section. */
47 bfd_boolean readonly_reloc;
49 /* We must not create a stub for a symbol that has relocations related to
50 taking the function's address, i.e. any but R_SCORE_CALL15 ones. */
51 bfd_boolean no_fn_stub;
53 /* Are we forced local? This will only be set if we have converted
54 the initial global GOT entry to a local GOT entry. */
55 bfd_boolean forced_local;
58 /* Traverse a score ELF linker hash table. */
59 #define score_elf_link_hash_traverse(table, func, info) \
60 (elf_link_hash_traverse \
61 ((table), \
62 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
63 (info)))
65 /* This structure is used to hold .got entries while estimating got sizes. */
66 struct score_got_entry
68 /* The input bfd in which the symbol is defined. */
69 bfd *abfd;
70 /* The index of the symbol, as stored in the relocation r_info, if
71 we have a local symbol; -1 otherwise. */
72 long symndx;
73 union
75 /* If abfd == NULL, an address that must be stored in the got. */
76 bfd_vma address;
77 /* If abfd != NULL && symndx != -1, the addend of the relocation
78 that should be added to the symbol value. */
79 bfd_vma addend;
80 /* If abfd != NULL && symndx == -1, the hash table entry
81 corresponding to a global symbol in the got (or, local, if
82 h->forced_local). */
83 struct score_elf_link_hash_entry *h;
84 } d;
86 /* The offset from the beginning of the .got section to the entry
87 corresponding to this symbol+addend. If it's a global symbol
88 whose offset is yet to be decided, it's going to be -1. */
89 long gotidx;
92 /* This structure is passed to score_elf_sort_hash_table_f when sorting
93 the dynamic symbols. */
94 struct score_elf_hash_sort_data
96 /* The symbol in the global GOT with the lowest dynamic symbol table index. */
97 struct elf_link_hash_entry *low;
98 /* The least dynamic symbol table index corresponding to a symbol with a GOT entry. */
99 long min_got_dynindx;
100 /* The greatest dynamic symbol table index corresponding to a symbol
101 with a GOT entry that is not referenced (e.g., a dynamic symbol
102 with dynamic relocations pointing to it from non-primary GOTs). */
103 long max_unref_got_dynindx;
104 /* The greatest dynamic symbol table index not corresponding to a
105 symbol without a GOT entry. */
106 long max_non_got_dynindx;
109 struct score_got_info
111 /* The global symbol in the GOT with the lowest index in the dynamic
112 symbol table. */
113 struct elf_link_hash_entry *global_gotsym;
114 /* The number of global .got entries. */
115 unsigned int global_gotno;
116 /* The number of local .got entries. */
117 unsigned int local_gotno;
118 /* The number of local .got entries we have used. */
119 unsigned int assigned_gotno;
120 /* A hash table holding members of the got. */
121 struct htab *got_entries;
122 /* In multi-got links, a pointer to the next got (err, rather, most
123 of the time, it points to the previous got). */
124 struct score_got_info *next;
127 /* A structure used to count GOT entries, for GOT entry or ELF symbol table traversal. */
128 struct _score_elf_section_data
130 struct bfd_elf_section_data elf;
131 union
133 struct score_got_info *got_info;
134 bfd_byte *tdata;
139 #define score_elf_section_data(sec) \
140 ((struct _score_elf_section_data *) elf_section_data (sec))
142 /* The size of a symbol-table entry. */
143 #define SCORE_ELF_SYM_SIZE(abfd) \
144 (get_elf_backend_data (abfd)->s->sizeof_sym)
146 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
147 from smaller values. Start with zero, widen, *then* decrement. */
148 #define MINUS_ONE (((bfd_vma)0) - 1)
149 #define MINUS_TWO (((bfd_vma)0) - 2)
151 #define PDR_SIZE 32
154 /* The number of local .got entries we reserve. */
155 #define SCORE_RESERVED_GOTNO (2)
156 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
158 /* The offset of $gp from the beginning of the .got section. */
159 #define ELF_SCORE_GP_OFFSET(abfd) (0x3ff0)
161 /* The maximum size of the GOT for it to be addressable using 15-bit offsets from $gp. */
162 #define SCORE_ELF_GOT_MAX_SIZE(abfd) (ELF_SCORE_GP_OFFSET(abfd) + 0x3fff)
164 #define SCORE_ELF_STUB_SECTION_NAME (".SCORE.stub")
165 #define SCORE_FUNCTION_STUB_SIZE (16)
167 #define STUB_LW 0xc3bcc010 /* lw r29, [r28, -0x3ff0] */
168 #define STUB_MOVE 0x8323bc56 /* mv r25, r3 */
169 #define STUB_LI16 0x87548000 /* ori r26, .dynsym_index */
170 #define STUB_BRL 0x801dbc09 /* brl r29 */
172 #define SCORE_ELF_GOT_SIZE(abfd) \
173 (get_elf_backend_data (abfd)->s->arch_size / 8)
175 #define SCORE_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \
176 (_bfd_elf_add_dynamic_entry (info, (bfd_vma) tag, (bfd_vma) val))
178 /* The size of an external dynamic table entry. */
179 #define SCORE_ELF_DYN_SIZE(abfd) \
180 (get_elf_backend_data (abfd)->s->sizeof_dyn)
182 /* The size of an external REL relocation. */
183 #define SCORE_ELF_REL_SIZE(abfd) \
184 (get_elf_backend_data (abfd)->s->sizeof_rel)
186 /* The default alignment for sections, as a power of two. */
187 #define SCORE_ELF_LOG_FILE_ALIGN(abfd)\
188 (get_elf_backend_data (abfd)->s->log_file_align)
190 static bfd_byte *hi16_rel_addr;
192 /* This will be used when we sort the dynamic relocation records. */
193 static bfd *reldyn_sorting_bfd;
195 /* SCORE ELF uses two common sections. One is the usual one, and the
196 other is for small objects. All the small objects are kept
197 together, and then referenced via the gp pointer, which yields
198 faster assembler code. This is what we use for the small common
199 section. This approach is copied from ecoff.c. */
200 static asection score_elf_scom_section;
201 static asymbol score_elf_scom_symbol;
202 static asymbol * score_elf_scom_symbol_ptr;
204 static bfd_reloc_status_type
205 score_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
206 arelent *reloc_entry,
207 asymbol *symbol ATTRIBUTE_UNUSED,
208 void * data,
209 asection *input_section ATTRIBUTE_UNUSED,
210 bfd *output_bfd ATTRIBUTE_UNUSED,
211 char **error_message ATTRIBUTE_UNUSED)
213 hi16_rel_addr = (bfd_byte *) data + reloc_entry->address;
214 return bfd_reloc_ok;
217 static bfd_reloc_status_type
218 score_elf_lo16_reloc (bfd *abfd,
219 arelent *reloc_entry,
220 asymbol *symbol ATTRIBUTE_UNUSED,
221 void * data,
222 asection *input_section,
223 bfd *output_bfd ATTRIBUTE_UNUSED,
224 char **error_message ATTRIBUTE_UNUSED)
226 bfd_vma addend = 0, offset = 0;
227 unsigned long val;
228 unsigned long hi16_offset, hi16_value, uvalue;
230 hi16_value = bfd_get_32 (abfd, hi16_rel_addr);
231 hi16_offset = ((((hi16_value >> 16) & 0x3) << 15) | (hi16_value & 0x7fff)) >> 1;
232 addend = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
233 offset = ((((addend >> 16) & 0x3) << 15) | (addend & 0x7fff)) >> 1;
234 val = reloc_entry->addend;
235 if (reloc_entry->address > input_section->size)
236 return bfd_reloc_outofrange;
237 uvalue = ((hi16_offset << 16) | (offset & 0xffff)) + val;
238 hi16_offset = (uvalue >> 16) << 1;
239 hi16_value = (hi16_value & ~0x37fff) | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000);
240 bfd_put_32 (abfd, hi16_value, hi16_rel_addr);
241 offset = (uvalue & 0xffff) << 1;
242 addend = (addend & ~0x37fff) | (offset & 0x7fff) | ((offset << 1) & 0x30000);
243 bfd_put_32 (abfd, addend, (bfd_byte *) data + reloc_entry->address);
244 return bfd_reloc_ok;
247 /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
248 dangerous relocation. */
250 static bfd_boolean
251 score_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp)
253 unsigned int count;
254 asymbol **sym;
255 unsigned int i;
257 /* If we've already figured out what GP will be, just return it. */
258 *pgp = _bfd_get_gp_value (output_bfd);
259 if (*pgp)
260 return TRUE;
262 count = bfd_get_symcount (output_bfd);
263 sym = bfd_get_outsymbols (output_bfd);
265 /* The linker script will have created a symbol named `_gp' with the
266 appropriate value. */
267 if (sym == NULL)
268 i = count;
269 else
271 for (i = 0; i < count; i++, sym++)
273 const char *name;
275 name = bfd_asymbol_name (*sym);
276 if (*name == '_' && strcmp (name, "_gp") == 0)
278 *pgp = bfd_asymbol_value (*sym);
279 _bfd_set_gp_value (output_bfd, *pgp);
280 break;
285 if (i >= count)
287 /* Only get the error once. */
288 *pgp = 4;
289 _bfd_set_gp_value (output_bfd, *pgp);
290 return FALSE;
293 return TRUE;
296 /* We have to figure out the gp value, so that we can adjust the
297 symbol value correctly. We look up the symbol _gp in the output
298 BFD. If we can't find it, we're stuck. We cache it in the ELF
299 target data. We don't need to adjust the symbol value for an
300 external symbol if we are producing relocatable output. */
302 static bfd_reloc_status_type
303 score_elf_final_gp (bfd *output_bfd,
304 asymbol *symbol,
305 bfd_boolean relocatable,
306 char **error_message,
307 bfd_vma *pgp)
309 if (bfd_is_und_section (symbol->section)
310 && ! relocatable)
312 *pgp = 0;
313 return bfd_reloc_undefined;
316 *pgp = _bfd_get_gp_value (output_bfd);
317 if (*pgp == 0
318 && (! relocatable
319 || (symbol->flags & BSF_SECTION_SYM) != 0))
321 if (relocatable)
323 /* Make up a value. */
324 *pgp = symbol->section->output_section->vma + 0x4000;
325 _bfd_set_gp_value (output_bfd, *pgp);
327 else if (!score_elf_assign_gp (output_bfd, pgp))
329 *error_message =
330 (char *) _("GP relative relocation when _gp not defined");
331 return bfd_reloc_dangerous;
335 return bfd_reloc_ok;
338 static bfd_reloc_status_type
339 score_elf_gprel15_with_gp (bfd *abfd,
340 asymbol *symbol,
341 arelent *reloc_entry,
342 asection *input_section,
343 bfd_boolean relocateable,
344 void * data,
345 bfd_vma gp ATTRIBUTE_UNUSED)
347 bfd_vma relocation;
348 unsigned long insn;
350 if (bfd_is_com_section (symbol->section))
351 relocation = 0;
352 else
353 relocation = symbol->value;
355 relocation += symbol->section->output_section->vma;
356 relocation += symbol->section->output_offset;
357 if (reloc_entry->address > input_section->size)
358 return bfd_reloc_outofrange;
360 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
361 if (((reloc_entry->addend & 0xffffc000) != 0)
362 && ((reloc_entry->addend & 0xffffc000) != 0xffffc000))
363 return bfd_reloc_overflow;
365 insn = (insn & ~0x7fff) | (reloc_entry->addend & 0x7fff);
366 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
367 if (relocateable)
368 reloc_entry->address += input_section->output_offset;
370 return bfd_reloc_ok;
373 static bfd_reloc_status_type
374 gprel32_with_gp (bfd *abfd, asymbol *symbol, arelent *reloc_entry,
375 asection *input_section, bfd_boolean relocatable,
376 void *data, bfd_vma gp)
378 bfd_vma relocation;
379 bfd_vma val;
381 if (bfd_is_com_section (symbol->section))
382 relocation = 0;
383 else
384 relocation = symbol->value;
386 relocation += symbol->section->output_section->vma;
387 relocation += symbol->section->output_offset;
389 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
390 return bfd_reloc_outofrange;
392 /* Set val to the offset into the section or symbol. */
393 val = reloc_entry->addend;
395 if (reloc_entry->howto->partial_inplace)
396 val += bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
398 /* Adjust val for the final section location and GP value. If we
399 are producing relocatable output, we don't want to do this for
400 an external symbol. */
401 if (! relocatable
402 || (symbol->flags & BSF_SECTION_SYM) != 0)
403 val += relocation - gp;
405 if (reloc_entry->howto->partial_inplace)
406 bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address);
407 else
408 reloc_entry->addend = val;
410 if (relocatable)
411 reloc_entry->address += input_section->output_offset;
413 return bfd_reloc_ok;
416 static bfd_reloc_status_type
417 score_elf_gprel15_reloc (bfd *abfd,
418 arelent *reloc_entry,
419 asymbol *symbol,
420 void * data,
421 asection *input_section,
422 bfd *output_bfd,
423 char **error_message)
425 bfd_boolean relocateable;
426 bfd_reloc_status_type ret;
427 bfd_vma gp;
429 if (output_bfd != NULL
430 && (symbol->flags & BSF_SECTION_SYM) == 0 && reloc_entry->addend == 0)
432 reloc_entry->address += input_section->output_offset;
433 return bfd_reloc_ok;
435 if (output_bfd != NULL)
436 relocateable = TRUE;
437 else
439 relocateable = FALSE;
440 output_bfd = symbol->section->output_section->owner;
443 ret = score_elf_final_gp (output_bfd, symbol, relocateable, error_message, &gp);
444 if (ret != bfd_reloc_ok)
445 return ret;
447 return score_elf_gprel15_with_gp (abfd, symbol, reloc_entry,
448 input_section, relocateable, data, gp);
451 /* Do a R_SCORE_GPREL32 relocation. This is a 32 bit value which must
452 become the offset from the gp register. */
454 static bfd_reloc_status_type
455 score_elf_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
456 void *data, asection *input_section, bfd *output_bfd,
457 char **error_message)
459 bfd_boolean relocatable;
460 bfd_reloc_status_type ret;
461 bfd_vma gp;
463 /* R_SCORE_GPREL32 relocations are defined for local symbols only. */
464 if (output_bfd != NULL
465 && (symbol->flags & BSF_SECTION_SYM) == 0
466 && (symbol->flags & BSF_LOCAL) != 0)
468 *error_message = (char *)
469 _("32bits gp relative relocation occurs for an external symbol");
470 return bfd_reloc_outofrange;
473 if (output_bfd != NULL)
474 relocatable = TRUE;
475 else
477 relocatable = FALSE;
478 output_bfd = symbol->section->output_section->owner;
481 ret = score_elf_final_gp (output_bfd, symbol, relocatable, error_message, &gp);
482 if (ret != bfd_reloc_ok)
483 return ret;
485 gp = 0;
486 return gprel32_with_gp (abfd, symbol, reloc_entry, input_section,
487 relocatable, data, gp);
490 /* A howto special_function for R_SCORE_GOT15 relocations. This is just
491 like any other 16-bit relocation when applied to global symbols, but is
492 treated in the same as R_SCORE_HI16 when applied to local symbols. */
494 static bfd_reloc_status_type
495 score_elf_got15_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
496 void *data, asection *input_section,
497 bfd *output_bfd, char **error_message)
499 if ((symbol->flags & (BSF_GLOBAL | BSF_WEAK)) != 0
500 || bfd_is_und_section (bfd_get_section (symbol))
501 || bfd_is_com_section (bfd_get_section (symbol)))
502 /* The relocation is against a global symbol. */
503 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
504 input_section, output_bfd,
505 error_message);
507 return score_elf_hi16_reloc (abfd, reloc_entry, symbol, data,
508 input_section, output_bfd, error_message);
511 static bfd_reloc_status_type
512 score_elf_got_lo16_reloc (bfd *abfd,
513 arelent *reloc_entry,
514 asymbol *symbol ATTRIBUTE_UNUSED,
515 void * data,
516 asection *input_section,
517 bfd *output_bfd ATTRIBUTE_UNUSED,
518 char **error_message ATTRIBUTE_UNUSED)
520 bfd_vma addend = 0, offset = 0;
521 signed long val;
522 signed long hi16_offset, hi16_value, uvalue;
524 hi16_value = bfd_get_32 (abfd, hi16_rel_addr);
525 hi16_offset = ((((hi16_value >> 16) & 0x3) << 15) | (hi16_value & 0x7fff)) >> 1;
526 addend = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
527 offset = ((((addend >> 16) & 0x3) << 15) | (addend & 0x7fff)) >> 1;
528 val = reloc_entry->addend;
529 if (reloc_entry->address > input_section->size)
530 return bfd_reloc_outofrange;
531 uvalue = ((hi16_offset << 16) | (offset & 0xffff)) + val;
532 if ((uvalue > -0x8000) && (uvalue < 0x7fff))
533 hi16_offset = 0;
534 else
535 hi16_offset = (uvalue >> 16) & 0x7fff;
536 hi16_value = (hi16_value & ~0x37fff) | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000);
537 bfd_put_32 (abfd, hi16_value, hi16_rel_addr);
538 offset = (uvalue & 0xffff) << 1;
539 addend = (addend & ~0x37fff) | (offset & 0x7fff) | ((offset << 1) & 0x30000);
540 bfd_put_32 (abfd, addend, (bfd_byte *) data + reloc_entry->address);
541 return bfd_reloc_ok;
544 static reloc_howto_type elf32_score_howto_table[] =
546 /* No relocation. */
547 HOWTO (R_SCORE_NONE, /* type */
548 0, /* rightshift */
549 0, /* size (0 = byte, 1 = short, 2 = long) */
550 0, /* bitsize */
551 FALSE, /* pc_relative */
552 0, /* bitpos */
553 complain_overflow_dont,/* complain_on_overflow */
554 bfd_elf_generic_reloc, /* special_function */
555 "R_SCORE_NONE", /* name */
556 FALSE, /* partial_inplace */
557 0, /* src_mask */
558 0, /* dst_mask */
559 FALSE), /* pcrel_offset */
561 /* R_SCORE_HI16 */
562 HOWTO (R_SCORE_HI16, /* type */
563 0, /* rightshift */
564 2, /* size (0 = byte, 1 = short, 2 = long) */
565 16, /* bitsize */
566 FALSE, /* pc_relative */
567 1, /* bitpos */
568 complain_overflow_dont,/* complain_on_overflow */
569 score_elf_hi16_reloc, /* special_function */
570 "R_SCORE_HI16", /* name */
571 TRUE, /* partial_inplace */
572 0x37fff, /* src_mask */
573 0x37fff, /* dst_mask */
574 FALSE), /* pcrel_offset */
576 /* R_SCORE_LO16 */
577 HOWTO (R_SCORE_LO16, /* type */
578 0, /* rightshift */
579 2, /* size (0 = byte, 1 = short, 2 = long) */
580 16, /* bitsize */
581 FALSE, /* pc_relative */
582 1, /* bitpos */
583 complain_overflow_dont,/* complain_on_overflow */
584 score_elf_lo16_reloc, /* special_function */
585 "R_SCORE_LO16", /* name */
586 TRUE, /* partial_inplace */
587 0x37fff, /* src_mask */
588 0x37fff, /* dst_mask */
589 FALSE), /* pcrel_offset */
591 /* R_SCORE_BCMP */
592 HOWTO (R_SCORE_BCMP, /* type */
593 0, /* rightshift */
594 2, /* size (0 = byte, 1 = short, 2 = long) */
595 16, /* bitsize */
596 FALSE, /* pc_relative */
597 1, /* bitpos */
598 complain_overflow_dont,/* complain_on_overflow */
599 bfd_elf_generic_reloc, /* special_function */
600 "R_SCORE_BCMP", /* name */
601 TRUE, /* partial_inplace */
602 0x0000ffff, /* src_mask */
603 0x0000ffff, /* dst_mask */
604 FALSE), /* pcrel_offset */
606 HOWTO (R_SCORE_24, /* type */
607 1, /* rightshift */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
609 24, /* bitsize */
610 FALSE, /* pc_relative */
611 1, /* bitpos */
612 complain_overflow_dont,/* complain_on_overflow */
613 bfd_elf_generic_reloc, /* special_function */
614 "R_SCORE_24", /* name */
615 FALSE, /* partial_inplace */
616 0x3ff7fff, /* src_mask */
617 0x3ff7fff, /* dst_mask */
618 FALSE), /* pcrel_offset */
620 /*R_SCORE_PC19 */
621 HOWTO (R_SCORE_PC19, /* type */
622 1, /* rightshift */
623 2, /* size (0 = byte, 1 = short, 2 = long) */
624 19, /* bitsize */
625 TRUE, /* pc_relative */
626 1, /* bitpos */
627 complain_overflow_dont,/* complain_on_overflow */
628 bfd_elf_generic_reloc, /* special_function */
629 "R_SCORE_PC19", /* name */
630 FALSE, /* partial_inplace */
631 0x3ff03fe, /* src_mask */
632 0x3ff03fe, /* dst_mask */
633 FALSE), /* pcrel_offset */
635 /*R_SCORE16_11 */
636 HOWTO (R_SCORE16_11, /* type */
637 1, /* rightshift */
638 1, /* size (0 = byte, 1 = short, 2 = long) */
639 11, /* bitsize */
640 FALSE, /* pc_relative */
641 1, /* bitpos */
642 complain_overflow_dont,/* complain_on_overflow */
643 bfd_elf_generic_reloc, /* special_function */
644 "R_SCORE16_11", /* name */
645 FALSE, /* partial_inplace */
646 0x000000ffe, /* src_mask */
647 0x000000ffe, /* dst_mask */
648 FALSE), /* pcrel_offset */
650 /* R_SCORE16_PC8 */
651 HOWTO (R_SCORE16_PC8, /* type */
652 1, /* rightshift */
653 1, /* size (0 = byte, 1 = short, 2 = long) */
654 8, /* bitsize */
655 TRUE, /* pc_relative */
656 0, /* bitpos */
657 complain_overflow_dont,/* complain_on_overflow */
658 bfd_elf_generic_reloc, /* special_function */
659 "R_SCORE16_PC8", /* name */
660 FALSE, /* partial_inplace */
661 0x000000ff, /* src_mask */
662 0x000000ff, /* dst_mask */
663 FALSE), /* pcrel_offset */
665 /* 32 bit absolute */
666 HOWTO (R_SCORE_ABS32, /* type 8 */
667 0, /* rightshift */
668 2, /* size (0 = byte, 1 = short, 2 = long) */
669 32, /* bitsize */
670 FALSE, /* pc_relative */
671 0, /* bitpos */
672 complain_overflow_bitfield, /* complain_on_overflow */
673 bfd_elf_generic_reloc, /* special_function */
674 "R_SCORE_ABS32", /* name */
675 FALSE, /* partial_inplace */
676 0xffffffff, /* src_mask */
677 0xffffffff, /* dst_mask */
678 FALSE), /* pcrel_offset */
680 /* 16 bit absolute */
681 HOWTO (R_SCORE_ABS16, /* type 11 */
682 0, /* rightshift */
683 1, /* size (0 = byte, 1 = short, 2 = long) */
684 16, /* bitsize */
685 FALSE, /* pc_relative */
686 0, /* bitpos */
687 complain_overflow_bitfield, /* complain_on_overflow */
688 bfd_elf_generic_reloc, /* special_function */
689 "R_SCORE_ABS16", /* name */
690 FALSE, /* partial_inplace */
691 0x0000ffff, /* src_mask */
692 0x0000ffff, /* dst_mask */
693 FALSE), /* pcrel_offset */
695 /* R_SCORE_DUMMY2 */
696 HOWTO (R_SCORE_DUMMY2, /* type */
697 0, /* rightshift */
698 2, /* size (0 = byte, 1 = short, 2 = long) */
699 16, /* bitsize */
700 FALSE, /* pc_relative */
701 0, /* bitpos */
702 complain_overflow_dont,/* complain_on_overflow */
703 bfd_elf_generic_reloc, /* special_function */
704 "R_SCORE_DUMMY2", /* name */
705 TRUE, /* partial_inplace */
706 0x00007fff, /* src_mask */
707 0x00007fff, /* dst_mask */
708 FALSE), /* pcrel_offset */
710 /* R_SCORE_GP15 */
711 HOWTO (R_SCORE_GP15, /* type */
712 0, /* rightshift */
713 2, /* size (0 = byte, 1 = short, 2 = long) */
714 16, /* bitsize */
715 FALSE, /* pc_relative */
716 0, /* bitpos */
717 complain_overflow_dont,/* complain_on_overflow */
718 score_elf_gprel15_reloc,/* special_function */
719 "R_SCORE_GP15", /* name */
720 TRUE, /* partial_inplace */
721 0x00007fff, /* src_mask */
722 0x00007fff, /* dst_mask */
723 FALSE), /* pcrel_offset */
725 /* GNU extension to record C++ vtable hierarchy. */
726 HOWTO (R_SCORE_GNU_VTINHERIT, /* type */
727 0, /* rightshift */
728 2, /* size (0 = byte, 1 = short, 2 = long) */
729 0, /* bitsize */
730 FALSE, /* pc_relative */
731 0, /* bitpos */
732 complain_overflow_dont,/* complain_on_overflow */
733 NULL, /* special_function */
734 "R_SCORE_GNU_VTINHERIT", /* name */
735 FALSE, /* partial_inplace */
736 0, /* src_mask */
737 0, /* dst_mask */
738 FALSE), /* pcrel_offset */
740 /* GNU extension to record C++ vtable member usage */
741 HOWTO (R_SCORE_GNU_VTENTRY, /* type */
742 0, /* rightshift */
743 2, /* size (0 = byte, 1 = short, 2 = long) */
744 0, /* bitsize */
745 FALSE, /* pc_relative */
746 0, /* bitpos */
747 complain_overflow_dont,/* complain_on_overflow */
748 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
749 "R_SCORE_GNU_VTENTRY", /* name */
750 FALSE, /* partial_inplace */
751 0, /* src_mask */
752 0, /* dst_mask */
753 FALSE), /* pcrel_offset */
755 /* Reference to global offset table. */
756 HOWTO (R_SCORE_GOT15, /* type */
757 0, /* rightshift */
758 2, /* size (0 = byte, 1 = short, 2 = long) */
759 16, /* bitsize */
760 FALSE, /* pc_relative */
761 0, /* bitpos */
762 complain_overflow_signed, /* complain_on_overflow */
763 score_elf_got15_reloc, /* special_function */
764 "R_SCORE_GOT15", /* name */
765 TRUE, /* partial_inplace */
766 0x00007fff, /* src_mask */
767 0x00007fff, /* dst_mask */
768 FALSE), /* pcrel_offset */
770 /* Low 16 bits of displacement in global offset table. */
771 HOWTO (R_SCORE_GOT_LO16, /* type */
772 0, /* rightshift */
773 2, /* size (0 = byte, 1 = short, 2 = long) */
774 16, /* bitsize */
775 FALSE, /* pc_relative */
776 1, /* bitpos */
777 complain_overflow_dont,/* complain_on_overflow */
778 score_elf_got_lo16_reloc, /* special_function */
779 "R_SCORE_GOT_LO16", /* name */
780 TRUE, /* partial_inplace */
781 0x37ffe, /* src_mask */
782 0x37ffe, /* dst_mask */
783 FALSE), /* pcrel_offset */
785 /* 15 bit call through global offset table. */
786 HOWTO (R_SCORE_CALL15, /* type */
787 0, /* rightshift */
788 2, /* size (0 = byte, 1 = short, 2 = long) */
789 16, /* bitsize */
790 FALSE, /* pc_relative */
791 0, /* bitpos */
792 complain_overflow_signed, /* complain_on_overflow */
793 bfd_elf_generic_reloc, /* special_function */
794 "R_SCORE_CALL15", /* name */
795 TRUE, /* partial_inplace */
796 0x00007fff, /* src_mask */
797 0x00007fff, /* dst_mask */
798 FALSE), /* pcrel_offset */
800 /* 32 bit GP relative reference. */
801 HOWTO (R_SCORE_GPREL32, /* type */
802 0, /* rightshift */
803 2, /* size (0 = byte, 1 = short, 2 = long) */
804 32, /* bitsize */
805 FALSE, /* pc_relative */
806 0, /* bitpos */
807 complain_overflow_dont,/* complain_on_overflow */
808 score_elf_gprel32_reloc, /* special_function */
809 "R_SCORE_GPREL32", /* name */
810 TRUE, /* partial_inplace */
811 0xffffffff, /* src_mask */
812 0xffffffff, /* dst_mask */
813 FALSE), /* pcrel_offset */
815 /* 32 bit symbol relative relocation. */
816 HOWTO (R_SCORE_REL32, /* type */
817 0, /* rightshift */
818 2, /* size (0 = byte, 1 = short, 2 = long) */
819 32, /* bitsize */
820 FALSE, /* pc_relative */
821 0, /* bitpos */
822 complain_overflow_dont,/* complain_on_overflow */
823 bfd_elf_generic_reloc, /* special_function */
824 "R_SCORE_REL32", /* name */
825 TRUE, /* partial_inplace */
826 0xffffffff, /* src_mask */
827 0xffffffff, /* dst_mask */
828 FALSE), /* pcrel_offset */
830 /* R_SCORE_DUMMY_HI16 */
831 HOWTO (R_SCORE_DUMMY_HI16, /* type */
832 0, /* rightshift */
833 2, /* size (0 = byte, 1 = short, 2 = long) */
834 16, /* bitsize */
835 FALSE, /* pc_relative */
836 1, /* bitpos */
837 complain_overflow_dont,/* complain_on_overflow */
838 score_elf_hi16_reloc, /* special_function */
839 "R_SCORE_DUMMY_HI16", /* name */
840 TRUE, /* partial_inplace */
841 0x37fff, /* src_mask */
842 0x37fff, /* dst_mask */
843 FALSE), /* pcrel_offset */
846 struct score_reloc_map
848 bfd_reloc_code_real_type bfd_reloc_val;
849 unsigned char elf_reloc_val;
852 static const struct score_reloc_map elf32_score_reloc_map[] =
854 {BFD_RELOC_NONE, R_SCORE_NONE},
855 {BFD_RELOC_HI16_S, R_SCORE_HI16},
856 {BFD_RELOC_LO16, R_SCORE_LO16},
857 {BFD_RELOC_SCORE_BCMP, R_SCORE_BCMP},
858 {BFD_RELOC_SCORE_JMP, R_SCORE_24},
859 {BFD_RELOC_SCORE_BRANCH, R_SCORE_PC19},
860 {BFD_RELOC_SCORE16_JMP, R_SCORE16_11},
861 {BFD_RELOC_SCORE16_BRANCH, R_SCORE16_PC8},
862 {BFD_RELOC_32, R_SCORE_ABS32},
863 {BFD_RELOC_16, R_SCORE_ABS16},
864 {BFD_RELOC_SCORE_DUMMY2, R_SCORE_DUMMY2},
865 {BFD_RELOC_SCORE_GPREL15, R_SCORE_GP15},
866 {BFD_RELOC_VTABLE_INHERIT, R_SCORE_GNU_VTINHERIT},
867 {BFD_RELOC_VTABLE_ENTRY, R_SCORE_GNU_VTENTRY},
868 {BFD_RELOC_SCORE_GOT15, R_SCORE_GOT15},
869 {BFD_RELOC_SCORE_GOT_LO16, R_SCORE_GOT_LO16},
870 {BFD_RELOC_SCORE_CALL15, R_SCORE_CALL15},
871 {BFD_RELOC_GPREL32, R_SCORE_GPREL32},
872 {BFD_RELOC_32_PCREL, R_SCORE_REL32},
873 {BFD_RELOC_SCORE_DUMMY_HI16, R_SCORE_DUMMY_HI16},
876 static INLINE hashval_t
877 score_elf_hash_bfd_vma (bfd_vma addr)
879 #ifdef BFD64
880 return addr + (addr >> 32);
881 #else
882 return addr;
883 #endif
886 /* got_entries only match if they're identical, except for gotidx, so
887 use all fields to compute the hash, and compare the appropriate
888 union members. */
890 static hashval_t
891 score_elf_got_entry_hash (const void *entry_)
893 const struct score_got_entry *entry = (struct score_got_entry *) entry_;
895 return entry->symndx
896 + (! entry->abfd ? score_elf_hash_bfd_vma (entry->d.address)
897 : entry->abfd->id
898 + (entry->symndx >= 0 ? score_elf_hash_bfd_vma (entry->d.addend)
899 : entry->d.h->root.root.root.hash));
902 static int
903 score_elf_got_entry_eq (const void *entry1, const void *entry2)
905 const struct score_got_entry *e1 = (struct score_got_entry *) entry1;
906 const struct score_got_entry *e2 = (struct score_got_entry *) entry2;
908 return e1->abfd == e2->abfd && e1->symndx == e2->symndx
909 && (! e1->abfd ? e1->d.address == e2->d.address
910 : e1->symndx >= 0 ? e1->d.addend == e2->d.addend
911 : e1->d.h == e2->d.h);
914 /* If H needs a GOT entry, assign it the highest available dynamic
915 index. Otherwise, assign it the lowest available dynamic
916 index. */
918 static bfd_boolean
919 score_elf_sort_hash_table_f (struct score_elf_link_hash_entry *h, void *data)
921 struct score_elf_hash_sort_data *hsd = data;
923 if (h->root.root.type == bfd_link_hash_warning)
924 h = (struct score_elf_link_hash_entry *) h->root.root.u.i.link;
926 /* Symbols without dynamic symbol table entries aren't interesting at all. */
927 if (h->root.dynindx == -1)
928 return TRUE;
930 /* Global symbols that need GOT entries that are not explicitly
931 referenced are marked with got offset 2. Those that are
932 referenced get a 1, and those that don't need GOT entries get
933 -1. */
934 if (h->root.got.offset == 2)
936 if (hsd->max_unref_got_dynindx == hsd->min_got_dynindx)
937 hsd->low = (struct elf_link_hash_entry *) h;
938 h->root.dynindx = hsd->max_unref_got_dynindx++;
940 else if (h->root.got.offset != 1)
941 h->root.dynindx = hsd->max_non_got_dynindx++;
942 else
944 h->root.dynindx = --hsd->min_got_dynindx;
945 hsd->low = (struct elf_link_hash_entry *) h;
948 return TRUE;
951 static asection *
952 score_elf_got_section (bfd *abfd, bfd_boolean maybe_excluded)
954 asection *sgot = bfd_get_section_by_name (abfd, ".got");
956 if (sgot == NULL || (! maybe_excluded && (sgot->flags & SEC_EXCLUDE) != 0))
957 return NULL;
958 return sgot;
961 /* Returns the GOT information associated with the link indicated by
962 INFO. If SGOTP is non-NULL, it is filled in with the GOT section. */
964 static struct score_got_info *
965 score_elf_got_info (bfd *abfd, asection **sgotp)
967 asection *sgot;
968 struct score_got_info *g;
970 sgot = score_elf_got_section (abfd, TRUE);
971 BFD_ASSERT (sgot != NULL);
972 BFD_ASSERT (elf_section_data (sgot) != NULL);
973 g = score_elf_section_data (sgot)->u.got_info;
974 BFD_ASSERT (g != NULL);
976 if (sgotp)
977 *sgotp = sgot;
978 return g;
981 /* Sort the dynamic symbol table so that symbols that need GOT entries
982 appear towards the end. This reduces the amount of GOT space
983 required. MAX_LOCAL is used to set the number of local symbols
984 known to be in the dynamic symbol table. During
985 s7_bfd_score_elf_size_dynamic_sections, this value is 1. Afterward, the
986 section symbols are added and the count is higher. */
988 static bfd_boolean
989 score_elf_sort_hash_table (struct bfd_link_info *info,
990 unsigned long max_local)
992 struct score_elf_hash_sort_data hsd;
993 struct score_got_info *g;
994 bfd *dynobj;
996 dynobj = elf_hash_table (info)->dynobj;
998 g = score_elf_got_info (dynobj, NULL);
1000 hsd.low = NULL;
1001 hsd.max_unref_got_dynindx =
1002 hsd.min_got_dynindx = elf_hash_table (info)->dynsymcount
1003 /* In the multi-got case, assigned_gotno of the master got_info
1004 indicate the number of entries that aren't referenced in the
1005 primary GOT, but that must have entries because there are
1006 dynamic relocations that reference it. Since they aren't
1007 referenced, we move them to the end of the GOT, so that they
1008 don't prevent other entries that are referenced from getting
1009 too large offsets. */
1010 - (g->next ? g->assigned_gotno : 0);
1011 hsd.max_non_got_dynindx = max_local;
1012 score_elf_link_hash_traverse (elf_hash_table (info),
1013 score_elf_sort_hash_table_f,
1014 &hsd);
1016 /* There should have been enough room in the symbol table to
1017 accommodate both the GOT and non-GOT symbols. */
1018 BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx);
1019 BFD_ASSERT ((unsigned long) hsd.max_unref_got_dynindx
1020 <= elf_hash_table (info)->dynsymcount);
1022 /* Now we know which dynamic symbol has the lowest dynamic symbol
1023 table index in the GOT. */
1024 g->global_gotsym = hsd.low;
1026 return TRUE;
1029 /* Returns the first relocation of type r_type found, beginning with
1030 RELOCATION. RELEND is one-past-the-end of the relocation table. */
1032 static const Elf_Internal_Rela *
1033 score_elf_next_relocation (bfd *abfd ATTRIBUTE_UNUSED, unsigned int r_type,
1034 const Elf_Internal_Rela *relocation,
1035 const Elf_Internal_Rela *relend)
1037 while (relocation < relend)
1039 if (ELF32_R_TYPE (relocation->r_info) == r_type)
1040 return relocation;
1042 ++relocation;
1045 /* We didn't find it. */
1046 bfd_set_error (bfd_error_bad_value);
1047 return NULL;
1050 /* This function is called via qsort() to sort the dynamic relocation
1051 entries by increasing r_symndx value. */
1052 static int
1053 score_elf_sort_dynamic_relocs (const void *arg1, const void *arg2)
1055 Elf_Internal_Rela int_reloc1;
1056 Elf_Internal_Rela int_reloc2;
1058 bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg1, &int_reloc1);
1059 bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg2, &int_reloc2);
1061 return (ELF32_R_SYM (int_reloc1.r_info) - ELF32_R_SYM (int_reloc2.r_info));
1064 /* Return whether a relocation is against a local symbol. */
1065 static bfd_boolean
1066 score_elf_local_relocation_p (bfd *input_bfd,
1067 const Elf_Internal_Rela *relocation,
1068 asection **local_sections,
1069 bfd_boolean check_forced)
1071 unsigned long r_symndx;
1072 Elf_Internal_Shdr *symtab_hdr;
1073 struct score_elf_link_hash_entry *h;
1074 size_t extsymoff;
1076 r_symndx = ELF32_R_SYM (relocation->r_info);
1077 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1078 extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info;
1080 if (r_symndx < extsymoff)
1081 return TRUE;
1082 if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL)
1083 return TRUE;
1085 if (check_forced)
1087 /* Look up the hash table to check whether the symbol was forced local. */
1088 h = (struct score_elf_link_hash_entry *)
1089 elf_sym_hashes (input_bfd) [r_symndx - extsymoff];
1090 /* Find the real hash-table entry for this symbol. */
1091 while (h->root.root.type == bfd_link_hash_indirect
1092 || h->root.root.type == bfd_link_hash_warning)
1093 h = (struct score_elf_link_hash_entry *) h->root.root.u.i.link;
1094 if (h->root.forced_local)
1095 return TRUE;
1098 return FALSE;
1101 /* Returns the dynamic relocation section for DYNOBJ. */
1103 static asection *
1104 score_elf_rel_dyn_section (bfd *dynobj, bfd_boolean create_p)
1106 static const char dname[] = ".rel.dyn";
1107 asection *sreloc;
1109 sreloc = bfd_get_section_by_name (dynobj, dname);
1110 if (sreloc == NULL && create_p)
1112 sreloc = bfd_make_section_with_flags (dynobj, dname,
1113 (SEC_ALLOC
1114 | SEC_LOAD
1115 | SEC_HAS_CONTENTS
1116 | SEC_IN_MEMORY
1117 | SEC_LINKER_CREATED
1118 | SEC_READONLY));
1119 if (sreloc == NULL
1120 || ! bfd_set_section_alignment (dynobj, sreloc,
1121 SCORE_ELF_LOG_FILE_ALIGN (dynobj)))
1122 return NULL;
1124 return sreloc;
1127 static void
1128 score_elf_allocate_dynamic_relocations (bfd *abfd, unsigned int n)
1130 asection *s;
1132 s = score_elf_rel_dyn_section (abfd, FALSE);
1133 BFD_ASSERT (s != NULL);
1135 if (s->size == 0)
1137 /* Make room for a null element. */
1138 s->size += SCORE_ELF_REL_SIZE (abfd);
1139 ++s->reloc_count;
1141 s->size += n * SCORE_ELF_REL_SIZE (abfd);
1144 /* Create a rel.dyn relocation for the dynamic linker to resolve. REL
1145 is the original relocation, which is now being transformed into a
1146 dynamic relocation. The ADDENDP is adjusted if necessary; the
1147 caller should store the result in place of the original addend. */
1149 static bfd_boolean
1150 score_elf_create_dynamic_relocation (bfd *output_bfd,
1151 struct bfd_link_info *info,
1152 const Elf_Internal_Rela *rel,
1153 struct score_elf_link_hash_entry *h,
1154 bfd_vma symbol,
1155 bfd_vma *addendp, asection *input_section)
1157 Elf_Internal_Rela outrel[3];
1158 asection *sreloc;
1159 bfd *dynobj;
1160 int r_type;
1161 long indx;
1162 bfd_boolean defined_p;
1164 r_type = ELF32_R_TYPE (rel->r_info);
1165 dynobj = elf_hash_table (info)->dynobj;
1166 sreloc = score_elf_rel_dyn_section (dynobj, FALSE);
1167 BFD_ASSERT (sreloc != NULL);
1168 BFD_ASSERT (sreloc->contents != NULL);
1169 BFD_ASSERT (sreloc->reloc_count * SCORE_ELF_REL_SIZE (output_bfd) < sreloc->size);
1171 outrel[0].r_offset =
1172 _bfd_elf_section_offset (output_bfd, info, input_section, rel[0].r_offset);
1173 outrel[1].r_offset =
1174 _bfd_elf_section_offset (output_bfd, info, input_section, rel[1].r_offset);
1175 outrel[2].r_offset =
1176 _bfd_elf_section_offset (output_bfd, info, input_section, rel[2].r_offset);
1178 if (outrel[0].r_offset == MINUS_ONE)
1179 /* The relocation field has been deleted. */
1180 return TRUE;
1182 if (outrel[0].r_offset == MINUS_TWO)
1184 /* The relocation field has been converted into a relative value of
1185 some sort. Functions like _bfd_elf_write_section_eh_frame expect
1186 the field to be fully relocated, so add in the symbol's value. */
1187 *addendp += symbol;
1188 return TRUE;
1191 /* We must now calculate the dynamic symbol table index to use
1192 in the relocation. */
1193 if (h != NULL
1194 && (! info->symbolic || !h->root.def_regular)
1195 /* h->root.dynindx may be -1 if this symbol was marked to
1196 become local. */
1197 && h->root.dynindx != -1)
1199 indx = h->root.dynindx;
1200 /* ??? glibc's ld.so just adds the final GOT entry to the
1201 relocation field. It therefore treats relocs against
1202 defined symbols in the same way as relocs against
1203 undefined symbols. */
1204 defined_p = FALSE;
1206 else
1208 indx = 0;
1209 defined_p = TRUE;
1212 /* If the relocation was previously an absolute relocation and
1213 this symbol will not be referred to by the relocation, we must
1214 adjust it by the value we give it in the dynamic symbol table.
1215 Otherwise leave the job up to the dynamic linker. */
1216 if (defined_p && r_type != R_SCORE_REL32)
1217 *addendp += symbol;
1219 /* The relocation is always an REL32 relocation because we don't
1220 know where the shared library will wind up at load-time. */
1221 outrel[0].r_info = ELF32_R_INFO ((unsigned long) indx, R_SCORE_REL32);
1223 /* For strict adherence to the ABI specification, we should
1224 generate a R_SCORE_64 relocation record by itself before the
1225 _REL32/_64 record as well, such that the addend is read in as
1226 a 64-bit value (REL32 is a 32-bit relocation, after all).
1227 However, since none of the existing ELF64 SCORE dynamic
1228 loaders seems to care, we don't waste space with these
1229 artificial relocations. If this turns out to not be true,
1230 score_elf_allocate_dynamic_relocations() should be tweaked so
1231 as to make room for a pair of dynamic relocations per
1232 invocation if ABI_64_P, and here we should generate an
1233 additional relocation record with R_SCORE_64 by itself for a
1234 NULL symbol before this relocation record. */
1235 outrel[1].r_info = ELF32_R_INFO (0, R_SCORE_NONE);
1236 outrel[2].r_info = ELF32_R_INFO (0, R_SCORE_NONE);
1238 /* Adjust the output offset of the relocation to reference the
1239 correct location in the output file. */
1240 outrel[0].r_offset += (input_section->output_section->vma
1241 + input_section->output_offset);
1242 outrel[1].r_offset += (input_section->output_section->vma
1243 + input_section->output_offset);
1244 outrel[2].r_offset += (input_section->output_section->vma
1245 + input_section->output_offset);
1247 /* Put the relocation back out. We have to use the special
1248 relocation outputter in the 64-bit case since the 64-bit
1249 relocation format is non-standard. */
1250 bfd_elf32_swap_reloc_out
1251 (output_bfd, &outrel[0],
1252 (sreloc->contents + sreloc->reloc_count * sizeof (Elf32_External_Rel)));
1254 /* We've now added another relocation. */
1255 ++sreloc->reloc_count;
1257 /* Make sure the output section is writable. The dynamic linker
1258 will be writing to it. */
1259 elf_section_data (input_section->output_section)->this_hdr.sh_flags |= SHF_WRITE;
1261 return TRUE;
1264 static bfd_boolean
1265 score_elf_create_got_section (bfd *abfd,
1266 struct bfd_link_info *info,
1267 bfd_boolean maybe_exclude)
1269 flagword flags;
1270 asection *s;
1271 struct elf_link_hash_entry *h;
1272 struct bfd_link_hash_entry *bh;
1273 struct score_got_info *g;
1274 bfd_size_type amt;
1276 /* This function may be called more than once. */
1277 s = score_elf_got_section (abfd, TRUE);
1278 if (s)
1280 if (! maybe_exclude)
1281 s->flags &= ~SEC_EXCLUDE;
1282 return TRUE;
1285 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1287 if (maybe_exclude)
1288 flags |= SEC_EXCLUDE;
1290 /* We have to use an alignment of 2**4 here because this is hardcoded
1291 in the function stub generation and in the linker script. */
1292 s = bfd_make_section_with_flags (abfd, ".got", flags);
1293 if (s == NULL
1294 || ! bfd_set_section_alignment (abfd, s, 4))
1295 return FALSE;
1297 /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the
1298 linker script because we don't want to define the symbol if we
1299 are not creating a global offset table. */
1300 bh = NULL;
1301 if (! (_bfd_generic_link_add_one_symbol
1302 (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s,
1303 0, NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh)))
1304 return FALSE;
1306 h = (struct elf_link_hash_entry *) bh;
1307 h->non_elf = 0;
1308 h->def_regular = 1;
1309 h->type = STT_OBJECT;
1311 if (info->shared && ! bfd_elf_link_record_dynamic_symbol (info, h))
1312 return FALSE;
1314 amt = sizeof (struct score_got_info);
1315 g = bfd_alloc (abfd, amt);
1316 if (g == NULL)
1317 return FALSE;
1319 g->global_gotsym = NULL;
1320 g->global_gotno = 0;
1322 g->local_gotno = SCORE_RESERVED_GOTNO;
1323 g->assigned_gotno = SCORE_RESERVED_GOTNO;
1324 g->next = NULL;
1326 g->got_entries = htab_try_create (1, score_elf_got_entry_hash,
1327 score_elf_got_entry_eq, NULL);
1328 if (g->got_entries == NULL)
1329 return FALSE;
1330 score_elf_section_data (s)->u.got_info = g;
1331 score_elf_section_data (s)->elf.this_hdr.sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_SCORE_GPREL;
1333 return TRUE;
1336 /* Calculate the %high function. */
1338 static bfd_vma
1339 score_elf_high (bfd_vma value)
1341 return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff;
1344 /* Create a local GOT entry for VALUE. Return the index of the entry,
1345 or -1 if it could not be created. */
1347 static struct score_got_entry *
1348 score_elf_create_local_got_entry (bfd *abfd,
1349 bfd *ibfd ATTRIBUTE_UNUSED,
1350 struct score_got_info *gg,
1351 asection *sgot, bfd_vma value,
1352 unsigned long r_symndx ATTRIBUTE_UNUSED,
1353 struct score_elf_link_hash_entry *h ATTRIBUTE_UNUSED,
1354 int r_type ATTRIBUTE_UNUSED)
1356 struct score_got_entry entry, **loc;
1357 struct score_got_info *g;
1359 entry.abfd = NULL;
1360 entry.symndx = -1;
1361 entry.d.address = value;
1363 g = gg;
1364 loc = (struct score_got_entry **) htab_find_slot (g->got_entries, &entry, INSERT);
1365 if (*loc)
1366 return *loc;
1368 entry.gotidx = SCORE_ELF_GOT_SIZE (abfd) * g->assigned_gotno++;
1370 *loc = bfd_alloc (abfd, sizeof entry);
1372 if (! *loc)
1373 return NULL;
1375 memcpy (*loc, &entry, sizeof entry);
1377 if (g->assigned_gotno >= g->local_gotno)
1379 (*loc)->gotidx = -1;
1380 /* We didn't allocate enough space in the GOT. */
1381 (*_bfd_error_handler)
1382 (_("not enough GOT space for local GOT entries"));
1383 bfd_set_error (bfd_error_bad_value);
1384 return NULL;
1387 bfd_put_32 (abfd, value, (sgot->contents + entry.gotidx));
1389 return *loc;
1392 /* Find a GOT entry whose higher-order 16 bits are the same as those
1393 for value. Return the index into the GOT for this entry. */
1395 static bfd_vma
1396 score_elf_got16_entry (bfd *abfd, bfd *ibfd, struct bfd_link_info *info,
1397 bfd_vma value, bfd_boolean external)
1399 asection *sgot;
1400 struct score_got_info *g;
1401 struct score_got_entry *entry;
1403 if (!external)
1405 /* Although the ABI says that it is "the high-order 16 bits" that we
1406 want, it is really the %high value. The complete value is
1407 calculated with a `addiu' of a LO16 relocation, just as with a
1408 HI16/LO16 pair. */
1409 value = score_elf_high (value) << 16;
1412 g = score_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
1414 entry = score_elf_create_local_got_entry (abfd, ibfd, g, sgot, value, 0, NULL,
1415 R_SCORE_GOT15);
1416 if (entry)
1417 return entry->gotidx;
1418 else
1419 return MINUS_ONE;
1422 void
1423 s7_bfd_score_elf_hide_symbol (struct bfd_link_info *info,
1424 struct elf_link_hash_entry *entry,
1425 bfd_boolean force_local)
1427 bfd *dynobj;
1428 asection *got;
1429 struct score_got_info *g;
1430 struct score_elf_link_hash_entry *h;
1432 h = (struct score_elf_link_hash_entry *) entry;
1433 if (h->forced_local)
1434 return;
1435 h->forced_local = TRUE;
1437 dynobj = elf_hash_table (info)->dynobj;
1438 if (dynobj != NULL && force_local)
1440 got = score_elf_got_section (dynobj, FALSE);
1441 if (got == NULL)
1442 return;
1443 g = score_elf_section_data (got)->u.got_info;
1445 if (g->next)
1447 struct score_got_entry e;
1448 struct score_got_info *gg = g;
1450 /* Since we're turning what used to be a global symbol into a
1451 local one, bump up the number of local entries of each GOT
1452 that had an entry for it. This will automatically decrease
1453 the number of global entries, since global_gotno is actually
1454 the upper limit of global entries. */
1455 e.abfd = dynobj;
1456 e.symndx = -1;
1457 e.d.h = h;
1459 for (g = g->next; g != gg; g = g->next)
1460 if (htab_find (g->got_entries, &e))
1462 BFD_ASSERT (g->global_gotno > 0);
1463 g->local_gotno++;
1464 g->global_gotno--;
1467 /* If this was a global symbol forced into the primary GOT, we
1468 no longer need an entry for it. We can't release the entry
1469 at this point, but we must at least stop counting it as one
1470 of the symbols that required a forced got entry. */
1471 if (h->root.got.offset == 2)
1473 BFD_ASSERT (gg->assigned_gotno > 0);
1474 gg->assigned_gotno--;
1477 else if (g->global_gotno == 0 && g->global_gotsym == NULL)
1478 /* If we haven't got through GOT allocation yet, just bump up the
1479 number of local entries, as this symbol won't be counted as
1480 global. */
1481 g->local_gotno++;
1482 else if (h->root.got.offset == 1)
1484 /* If we're past non-multi-GOT allocation and this symbol had
1485 been marked for a global got entry, give it a local entry
1486 instead. */
1487 BFD_ASSERT (g->global_gotno > 0);
1488 g->local_gotno++;
1489 g->global_gotno--;
1493 _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local);
1496 /* If H is a symbol that needs a global GOT entry, but has a dynamic
1497 symbol table index lower than any we've seen to date, record it for
1498 posterity. */
1500 static bfd_boolean
1501 score_elf_record_global_got_symbol (struct elf_link_hash_entry *h,
1502 bfd *abfd,
1503 struct bfd_link_info *info,
1504 struct score_got_info *g)
1506 struct score_got_entry entry, **loc;
1508 /* A global symbol in the GOT must also be in the dynamic symbol table. */
1509 if (h->dynindx == -1)
1511 switch (ELF_ST_VISIBILITY (h->other))
1513 case STV_INTERNAL:
1514 case STV_HIDDEN:
1515 s7_bfd_score_elf_hide_symbol (info, h, TRUE);
1516 break;
1518 if (!bfd_elf_link_record_dynamic_symbol (info, h))
1519 return FALSE;
1522 entry.abfd = abfd;
1523 entry.symndx = -1;
1524 entry.d.h = (struct score_elf_link_hash_entry *) h;
1526 loc = (struct score_got_entry **) htab_find_slot (g->got_entries, &entry, INSERT);
1528 /* If we've already marked this entry as needing GOT space, we don't
1529 need to do it again. */
1530 if (*loc)
1531 return TRUE;
1533 *loc = bfd_alloc (abfd, sizeof entry);
1534 if (! *loc)
1535 return FALSE;
1537 entry.gotidx = -1;
1539 memcpy (*loc, &entry, sizeof (entry));
1541 if (h->got.offset != MINUS_ONE)
1542 return TRUE;
1544 /* By setting this to a value other than -1, we are indicating that
1545 there needs to be a GOT entry for H. Avoid using zero, as the
1546 generic ELF copy_indirect_symbol tests for <= 0. */
1547 h->got.offset = 1;
1549 return TRUE;
1552 /* Reserve space in G for a GOT entry containing the value of symbol
1553 SYMNDX in input bfd ABDF, plus ADDEND. */
1555 static bfd_boolean
1556 score_elf_record_local_got_symbol (bfd *abfd,
1557 long symndx,
1558 bfd_vma addend,
1559 struct score_got_info *g)
1561 struct score_got_entry entry, **loc;
1563 entry.abfd = abfd;
1564 entry.symndx = symndx;
1565 entry.d.addend = addend;
1566 loc = (struct score_got_entry **) htab_find_slot (g->got_entries, &entry, INSERT);
1568 if (*loc)
1569 return TRUE;
1571 entry.gotidx = g->local_gotno++;
1573 *loc = bfd_alloc (abfd, sizeof(entry));
1574 if (! *loc)
1575 return FALSE;
1577 memcpy (*loc, &entry, sizeof (entry));
1579 return TRUE;
1582 /* Returns the GOT offset at which the indicated address can be found.
1583 If there is not yet a GOT entry for this value, create one.
1584 Returns -1 if no satisfactory GOT offset can be found. */
1586 static bfd_vma
1587 score_elf_local_got_index (bfd *abfd, bfd *ibfd, struct bfd_link_info *info,
1588 bfd_vma value, unsigned long r_symndx,
1589 struct score_elf_link_hash_entry *h, int r_type)
1591 asection *sgot;
1592 struct score_got_info *g;
1593 struct score_got_entry *entry;
1595 g = score_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
1597 entry = score_elf_create_local_got_entry (abfd, ibfd, g, sgot, value,
1598 r_symndx, h, r_type);
1599 if (!entry)
1600 return MINUS_ONE;
1602 else
1603 return entry->gotidx;
1606 /* Returns the GOT index for the global symbol indicated by H. */
1608 static bfd_vma
1609 score_elf_global_got_index (bfd *abfd, struct elf_link_hash_entry *h)
1611 bfd_vma got_index;
1612 asection *sgot;
1613 struct score_got_info *g;
1614 long global_got_dynindx = 0;
1616 g = score_elf_got_info (abfd, &sgot);
1617 if (g->global_gotsym != NULL)
1618 global_got_dynindx = g->global_gotsym->dynindx;
1620 /* Once we determine the global GOT entry with the lowest dynamic
1621 symbol table index, we must put all dynamic symbols with greater
1622 indices into the GOT. That makes it easy to calculate the GOT
1623 offset. */
1624 BFD_ASSERT (h->dynindx >= global_got_dynindx);
1625 got_index = ((h->dynindx - global_got_dynindx + g->local_gotno) * SCORE_ELF_GOT_SIZE (abfd));
1626 BFD_ASSERT (got_index < sgot->size);
1628 return got_index;
1631 /* Returns the offset for the entry at the INDEXth position in the GOT. */
1633 static bfd_vma
1634 score_elf_got_offset_from_index (bfd *dynobj,
1635 bfd *output_bfd,
1636 bfd *input_bfd ATTRIBUTE_UNUSED,
1637 bfd_vma got_index)
1639 asection *sgot;
1640 bfd_vma gp;
1641 struct score_got_info *g;
1643 g = score_elf_got_info (dynobj, &sgot);
1644 gp = _bfd_get_gp_value (output_bfd);
1646 return sgot->output_section->vma + sgot->output_offset + got_index - gp;
1649 /* Follow indirect and warning hash entries so that each got entry
1650 points to the final symbol definition. P must point to a pointer
1651 to the hash table we're traversing. Since this traversal may
1652 modify the hash table, we set this pointer to NULL to indicate
1653 we've made a potentially-destructive change to the hash table, so
1654 the traversal must be restarted. */
1656 static int
1657 score_elf_resolve_final_got_entry (void **entryp, void *p)
1659 struct score_got_entry *entry = (struct score_got_entry *) *entryp;
1660 htab_t got_entries = *(htab_t *) p;
1662 if (entry->abfd != NULL && entry->symndx == -1)
1664 struct score_elf_link_hash_entry *h = entry->d.h;
1666 while (h->root.root.type == bfd_link_hash_indirect
1667 || h->root.root.type == bfd_link_hash_warning)
1668 h = (struct score_elf_link_hash_entry *) h->root.root.u.i.link;
1670 if (entry->d.h == h)
1671 return 1;
1673 entry->d.h = h;
1675 /* If we can't find this entry with the new bfd hash, re-insert
1676 it, and get the traversal restarted. */
1677 if (! htab_find (got_entries, entry))
1679 htab_clear_slot (got_entries, entryp);
1680 entryp = htab_find_slot (got_entries, entry, INSERT);
1681 if (! *entryp)
1682 *entryp = entry;
1683 /* Abort the traversal, since the whole table may have
1684 moved, and leave it up to the parent to restart the
1685 process. */
1686 *(htab_t *) p = NULL;
1687 return 0;
1689 /* We might want to decrement the global_gotno count, but it's
1690 either too early or too late for that at this point. */
1693 return 1;
1696 /* Turn indirect got entries in a got_entries table into their final locations. */
1698 static void
1699 score_elf_resolve_final_got_entries (struct score_got_info *g)
1701 htab_t got_entries;
1705 got_entries = g->got_entries;
1707 htab_traverse (got_entries,
1708 score_elf_resolve_final_got_entry,
1709 &got_entries);
1711 while (got_entries == NULL);
1714 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. for -r */
1716 static void
1717 score_elf_add_to_rel (bfd *abfd,
1718 bfd_byte *address,
1719 reloc_howto_type *howto,
1720 bfd_signed_vma increment)
1722 bfd_signed_vma addend;
1723 bfd_vma contents;
1724 unsigned long offset;
1725 unsigned long r_type = howto->type;
1726 unsigned long hi16_addend, hi16_offset, hi16_value, uvalue;
1728 contents = bfd_get_32 (abfd, address);
1729 /* Get the (signed) value from the instruction. */
1730 addend = contents & howto->src_mask;
1731 if (addend & ((howto->src_mask + 1) >> 1))
1733 bfd_signed_vma mask;
1735 mask = -1;
1736 mask &= ~howto->src_mask;
1737 addend |= mask;
1739 /* Add in the increment, (which is a byte value). */
1740 switch (r_type)
1742 case R_SCORE_PC19:
1743 offset =
1744 (((contents & howto->src_mask) & 0x3ff0000) >> 6) | ((contents & howto->src_mask) & 0x3ff);
1745 offset += increment;
1746 contents =
1747 (contents & ~howto->
1748 src_mask) | (((offset << 6) & howto->src_mask) & 0x3ff0000) | (offset & 0x3ff);
1749 bfd_put_32 (abfd, contents, address);
1750 break;
1751 case R_SCORE_HI16:
1752 break;
1753 case R_SCORE_LO16:
1754 hi16_addend = bfd_get_32 (abfd, address - 4);
1755 hi16_offset = ((((hi16_addend >> 16) & 0x3) << 15) | (hi16_addend & 0x7fff)) >> 1;
1756 offset = ((((contents >> 16) & 0x3) << 15) | (contents & 0x7fff)) >> 1;
1757 offset = (hi16_offset << 16) | (offset & 0xffff);
1758 uvalue = increment + offset;
1759 hi16_offset = (uvalue >> 16) << 1;
1760 hi16_value = (hi16_addend & (~(howto->dst_mask)))
1761 | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000);
1762 bfd_put_32 (abfd, hi16_value, address - 4);
1763 offset = (uvalue & 0xffff) << 1;
1764 contents = (contents & (~(howto->dst_mask))) | (offset & 0x7fff) | ((offset << 1) & 0x30000);
1765 bfd_put_32 (abfd, contents, address);
1766 break;
1767 case R_SCORE_24:
1768 offset =
1769 (((contents & howto->src_mask) >> 1) & 0x1ff8000) | ((contents & howto->src_mask) & 0x7fff);
1770 offset += increment;
1771 contents =
1772 (contents & ~howto->
1773 src_mask) | (((offset << 1) & howto->src_mask) & 0x3ff0000) | (offset & 0x7fff);
1774 bfd_put_32 (abfd, contents, address);
1775 break;
1776 case R_SCORE16_11:
1778 contents = bfd_get_16 (abfd, address);
1779 offset = contents & howto->src_mask;
1780 offset += increment;
1781 contents = (contents & ~howto->src_mask) | (offset & howto->src_mask);
1782 bfd_put_16 (abfd, contents, address);
1784 break;
1785 case R_SCORE16_PC8:
1787 contents = bfd_get_16 (abfd, address);
1788 offset = (contents & howto->src_mask) + ((increment >> 1) & 0xff);
1789 contents = (contents & (~howto->src_mask)) | (offset & howto->src_mask);
1790 bfd_put_16 (abfd, contents, address);
1792 break;
1793 case R_SCORE_GOT15:
1794 case R_SCORE_GOT_LO16:
1795 break;
1797 default:
1798 addend += increment;
1799 contents = (contents & ~howto->dst_mask) | (addend & howto->dst_mask);
1800 bfd_put_32 (abfd, contents, address);
1801 break;
1805 /* Perform a relocation as part of a final link. */
1807 static bfd_reloc_status_type
1808 score_elf_final_link_relocate (reloc_howto_type *howto,
1809 bfd *input_bfd,
1810 bfd *output_bfd,
1811 asection *input_section,
1812 bfd_byte *contents,
1813 Elf_Internal_Rela *rel,
1814 Elf_Internal_Rela *relocs,
1815 bfd_vma symbol,
1816 struct bfd_link_info *info,
1817 const char *sym_name ATTRIBUTE_UNUSED,
1818 int sym_flags ATTRIBUTE_UNUSED,
1819 struct score_elf_link_hash_entry *h,
1820 Elf_Internal_Sym *local_syms,
1821 asection **local_sections,
1822 bfd_boolean gp_disp_p)
1824 unsigned long r_type;
1825 unsigned long r_symndx;
1826 bfd_byte *hit_data = contents + rel->r_offset;
1827 bfd_vma addend;
1828 /* The final GP value to be used for the relocatable, executable, or
1829 shared object file being produced. */
1830 bfd_vma gp = MINUS_ONE;
1831 /* The place (section offset or address) of the storage unit being relocated. */
1832 bfd_vma rel_addr;
1833 /* The value of GP used to create the relocatable object. */
1834 bfd_vma gp0 = MINUS_ONE;
1835 /* The offset into the global offset table at which the address of the relocation entry
1836 symbol, adjusted by the addend, resides during execution. */
1837 bfd_vma g = MINUS_ONE;
1838 /* TRUE if the symbol referred to by this relocation is a local symbol. */
1839 bfd_boolean local_p;
1840 /* The eventual value we will relocate. */
1841 bfd_vma value = symbol;
1842 unsigned long hi16_addend, hi16_offset, hi16_value, uvalue, offset, abs_value = 0;
1844 Elf_Internal_Sym *sym = 0;
1845 asection *sec = NULL;
1846 bfd_boolean merge_p = 0;
1849 if (elf_gp (output_bfd) == 0)
1851 struct bfd_link_hash_entry *bh;
1852 asection *o;
1854 bh = bfd_link_hash_lookup (info->hash, "_gp", 0, 0, 1);
1855 if (bh != NULL && bh->type == bfd_link_hash_defined)
1856 elf_gp (output_bfd) = (bh->u.def.value
1857 + bh->u.def.section->output_section->vma
1858 + bh->u.def.section->output_offset);
1859 else if (info->relocatable)
1861 bfd_vma lo = -1;
1863 /* Find the GP-relative section with the lowest offset. */
1864 for (o = output_bfd->sections; o != NULL; o = o->next)
1865 if (o->vma < lo)
1866 lo = o->vma;
1867 /* And calculate GP relative to that. */
1868 elf_gp (output_bfd) = lo + ELF_SCORE_GP_OFFSET (input_bfd);
1870 else
1872 /* If the relocate_section function needs to do a reloc
1873 involving the GP value, it should make a reloc_dangerous
1874 callback to warn that GP is not defined. */
1878 /* Parse the relocation. */
1879 r_symndx = ELF32_R_SYM (rel->r_info);
1880 r_type = ELF32_R_TYPE (rel->r_info);
1881 rel_addr = (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
1883 /* For hidden symbol. */
1884 local_p = score_elf_local_relocation_p (input_bfd, rel, local_sections, FALSE);
1885 if (local_p)
1887 sym = local_syms + r_symndx;
1888 sec = local_sections[r_symndx];
1890 symbol = sec->output_section->vma + sec->output_offset;
1891 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION
1892 || (sec->flags & SEC_MERGE))
1893 symbol += sym->st_value;
1894 if ((sec->flags & SEC_MERGE)
1895 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
1896 merge_p = 1;
1899 if (r_type == R_SCORE_GOT15)
1901 const Elf_Internal_Rela *relend;
1902 const Elf_Internal_Rela *lo16_rel;
1903 const struct elf_backend_data *bed;
1904 bfd_vma lo_value = 0;
1906 bed = get_elf_backend_data (output_bfd);
1907 relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel;
1908 lo16_rel = score_elf_next_relocation (input_bfd, R_SCORE_GOT_LO16, rel, relend);
1909 if ((local_p) && (lo16_rel != NULL))
1911 bfd_vma tmp = 0;
1912 tmp = bfd_get_32 (input_bfd, contents + lo16_rel->r_offset);
1913 lo_value = (((tmp >> 16) & 0x3) << 14) | ((tmp & 0x7fff) >> 1);
1914 if (merge_p)
1916 asection *msec = sec;
1917 lo_value = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, lo_value);
1918 lo_value -= symbol;
1919 lo_value += msec->output_section->vma + msec->output_offset;
1922 addend = lo_value;
1924 else
1926 addend = (bfd_get_32 (input_bfd, hit_data) >> howto->bitpos) & howto->src_mask;
1929 /* Figure out the value of the symbol. */
1930 if (local_p && !merge_p)
1932 if (r_type == R_SCORE_GOT15)
1934 const Elf_Internal_Rela *relend;
1935 const Elf_Internal_Rela *lo16_rel;
1936 const struct elf_backend_data *bed;
1937 bfd_vma lo_value = 0;
1939 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
1940 addend = value & 0x7fff;
1941 if ((addend & 0x4000) == 0x4000)
1942 addend |= 0xffffc000;
1944 bed = get_elf_backend_data (output_bfd);
1945 relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel;
1946 lo16_rel = score_elf_next_relocation (input_bfd, R_SCORE_GOT_LO16, rel, relend);
1947 if ((local_p) && (lo16_rel != NULL))
1949 bfd_vma tmp = 0;
1950 tmp = bfd_get_32 (input_bfd, contents + lo16_rel->r_offset);
1951 lo_value = (((tmp >> 16) & 0x3) << 14) | ((tmp & 0x7fff) >> 1);
1954 addend <<= 16;
1955 addend += lo_value;
1959 local_p = score_elf_local_relocation_p (input_bfd, rel, local_sections, TRUE);
1961 /* If we haven't already determined the GOT offset, or the GP value,
1962 and we're going to need it, get it now. */
1963 switch (r_type)
1965 case R_SCORE_CALL15:
1966 case R_SCORE_GOT15:
1967 if (!local_p)
1969 g = score_elf_global_got_index (elf_hash_table (info)->dynobj,
1970 (struct elf_link_hash_entry *) h);
1971 if ((! elf_hash_table(info)->dynamic_sections_created
1972 || (info->shared
1973 && (info->symbolic || h->root.dynindx == -1)
1974 && h->root.def_regular)))
1976 /* This is a static link or a -Bsymbolic link. The
1977 symbol is defined locally, or was forced to be local.
1978 We must initialize this entry in the GOT. */
1979 bfd *tmpbfd = elf_hash_table (info)->dynobj;
1980 asection *sgot = score_elf_got_section (tmpbfd, FALSE);
1981 bfd_put_32 (tmpbfd, value, sgot->contents + g);
1984 else if (r_type == R_SCORE_GOT15 || r_type == R_SCORE_CALL15)
1986 /* There's no need to create a local GOT entry here; the
1987 calculation for a local GOT15 entry does not involve G. */
1990 else
1992 g = score_elf_local_got_index (output_bfd, input_bfd, info,
1993 symbol + addend, r_symndx, h, r_type);
1994 if (g == MINUS_ONE)
1995 return bfd_reloc_outofrange;
1998 /* Convert GOT indices to actual offsets. */
1999 g = score_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
2000 output_bfd, input_bfd, g);
2001 break;
2003 case R_SCORE_HI16:
2004 case R_SCORE_LO16:
2005 case R_SCORE_GPREL32:
2006 gp0 = _bfd_get_gp_value (input_bfd);
2007 gp = _bfd_get_gp_value (output_bfd);
2008 break;
2010 case R_SCORE_GP15:
2011 gp = _bfd_get_gp_value (output_bfd);
2013 default:
2014 break;
2017 switch (r_type)
2019 case R_SCORE_NONE:
2020 return bfd_reloc_ok;
2022 case R_SCORE_ABS32:
2023 case R_SCORE_REL32:
2024 if ((info->shared
2025 || (elf_hash_table (info)->dynamic_sections_created
2026 && h != NULL
2027 && h->root.def_dynamic
2028 && !h->root.def_regular))
2029 && r_symndx != 0
2030 && (input_section->flags & SEC_ALLOC) != 0)
2032 /* If we're creating a shared library, or this relocation is against a symbol
2033 in a shared library, then we can't know where the symbol will end up.
2034 So, we create a relocation record in the output, and leave the job up
2035 to the dynamic linker. */
2036 value = addend;
2037 if (!score_elf_create_dynamic_relocation (output_bfd, info, rel, h,
2038 symbol, &value,
2039 input_section))
2040 return bfd_reloc_undefined;
2042 else if (r_symndx == 0)
2043 /* r_symndx will be zero only for relocs against symbols
2044 from removed linkonce sections, or sections discarded by
2045 a linker script. */
2046 value = 0;
2047 else
2049 if (r_type != R_SCORE_REL32)
2050 value = symbol + addend;
2051 else
2052 value = addend;
2054 value &= howto->dst_mask;
2055 bfd_put_32 (input_bfd, value, hit_data);
2056 return bfd_reloc_ok;
2058 case R_SCORE_ABS16:
2059 value += addend;
2060 if ((long) value > 0x7fff || (long) value < -0x8000)
2061 return bfd_reloc_overflow;
2062 bfd_put_16 (input_bfd, value, hit_data);
2063 return bfd_reloc_ok;
2065 case R_SCORE_24:
2066 addend = bfd_get_32 (input_bfd, hit_data);
2067 offset = (((addend & howto->src_mask) >> 1) & 0x1ff8000) | ((addend & howto->src_mask) & 0x7fff);
2068 if ((offset & 0x1000000) != 0)
2069 offset |= 0xfe000000;
2070 value += offset;
2071 abs_value = abs (value - rel_addr);
2072 if ((abs_value & 0xfe000000) != 0)
2073 return bfd_reloc_overflow;
2074 addend = (addend & ~howto->src_mask)
2075 | (((value << 1) & howto->src_mask) & 0x3ff0000) | (value & 0x7fff);
2076 bfd_put_32 (input_bfd, addend, hit_data);
2077 return bfd_reloc_ok;
2079 case R_SCORE_PC19:
2080 addend = bfd_get_32 (input_bfd, hit_data);
2081 offset = (((addend & howto->src_mask) & 0x3ff0000) >> 6) | ((addend & howto->src_mask) & 0x3ff);
2082 if ((offset & 0x80000) != 0)
2083 offset |= 0xfff00000;
2084 abs_value = value = value - rel_addr + offset;
2085 /* exceed 20 bit : overflow. */
2086 if ((abs_value & 0x80000000) == 0x80000000)
2087 abs_value = 0xffffffff - value + 1;
2088 if ((abs_value & 0xfff80000) != 0)
2089 return bfd_reloc_overflow;
2090 addend = (addend & ~howto->src_mask)
2091 | (((value << 6) & howto->src_mask) & 0x3ff0000) | (value & 0x3ff);
2092 bfd_put_32 (input_bfd, addend, hit_data);
2093 return bfd_reloc_ok;
2095 case R_SCORE16_11:
2096 addend = bfd_get_16 (input_bfd, hit_data);
2097 offset = addend & howto->src_mask;
2098 if ((offset & 0x800) != 0) /* Offset is negative. */
2099 offset |= 0xfffff000;
2100 value += offset;
2101 abs_value = abs (value - rel_addr);
2102 if ((abs_value & 0xfffff000) != 0)
2103 return bfd_reloc_overflow;
2104 addend = (addend & ~howto->src_mask) | (value & howto->src_mask);
2105 bfd_put_16 (input_bfd, addend, hit_data);
2106 return bfd_reloc_ok;
2108 case R_SCORE16_PC8:
2109 addend = bfd_get_16 (input_bfd, hit_data);
2110 offset = (addend & howto->src_mask) << 1;
2111 if ((offset & 0x100) != 0) /* Offset is negative. */
2112 offset |= 0xfffffe00;
2113 abs_value = value = value - rel_addr + offset;
2114 /* Sign bit + exceed 9 bit. */
2115 if (((value & 0xffffff00) != 0) && ((value & 0xffffff00) != 0xffffff00))
2116 return bfd_reloc_overflow;
2117 value >>= 1;
2118 addend = (addend & ~howto->src_mask) | (value & howto->src_mask);
2119 bfd_put_16 (input_bfd, addend, hit_data);
2120 return bfd_reloc_ok;
2122 case R_SCORE_HI16:
2123 return bfd_reloc_ok;
2125 case R_SCORE_LO16:
2126 hi16_addend = bfd_get_32 (input_bfd, hit_data - 4);
2127 hi16_offset = ((((hi16_addend >> 16) & 0x3) << 15) | (hi16_addend & 0x7fff)) >> 1;
2128 addend = bfd_get_32 (input_bfd, hit_data);
2129 offset = ((((addend >> 16) & 0x3) << 15) | (addend & 0x7fff)) >> 1;
2130 offset = (hi16_offset << 16) | (offset & 0xffff);
2132 if (!gp_disp_p)
2133 uvalue = value + offset;
2134 else
2135 uvalue = offset + gp - rel_addr + 4;
2137 hi16_offset = (uvalue >> 16) << 1;
2138 hi16_value = (hi16_addend & (~(howto->dst_mask)))
2139 | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000);
2140 bfd_put_32 (input_bfd, hi16_value, hit_data - 4);
2141 offset = (uvalue & 0xffff) << 1;
2142 value = (addend & (~(howto->dst_mask))) | (offset & 0x7fff) | ((offset << 1) & 0x30000);
2143 bfd_put_32 (input_bfd, value, hit_data);
2144 return bfd_reloc_ok;
2146 case R_SCORE_GP15:
2147 addend = bfd_get_32 (input_bfd, hit_data);
2148 offset = addend & 0x7fff;
2149 if ((offset & 0x4000) == 0x4000)
2150 offset |= 0xffffc000;
2151 value = value + offset - gp;
2152 if (((value & 0xffffc000) != 0) && ((value & 0xffffc000) != 0xffffc000))
2153 return bfd_reloc_overflow;
2154 value = (addend & ~howto->src_mask) | (value & howto->src_mask);
2155 bfd_put_32 (input_bfd, value, hit_data);
2156 return bfd_reloc_ok;
2158 case R_SCORE_GOT15:
2159 case R_SCORE_CALL15:
2160 if (local_p)
2162 bfd_boolean forced;
2164 /* The special case is when the symbol is forced to be local. We need the
2165 full address in the GOT since no R_SCORE_GOT_LO16 relocation follows. */
2166 forced = ! score_elf_local_relocation_p (input_bfd, rel,
2167 local_sections, FALSE);
2168 value = score_elf_got16_entry (output_bfd, input_bfd, info,
2169 symbol + addend, forced);
2170 if (value == MINUS_ONE)
2171 return bfd_reloc_outofrange;
2172 value = score_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
2173 output_bfd, input_bfd, value);
2175 else
2177 value = g;
2180 if ((long) value > 0x3fff || (long) value < -0x4000)
2181 return bfd_reloc_overflow;
2183 addend = bfd_get_32 (input_bfd, hit_data);
2184 value = (addend & ~howto->dst_mask) | (value & howto->dst_mask);
2185 bfd_put_32 (input_bfd, value, hit_data);
2186 return bfd_reloc_ok;
2188 case R_SCORE_GPREL32:
2189 value = (addend + symbol + gp0 - gp);
2190 value &= howto->dst_mask;
2191 bfd_put_32 (input_bfd, value, hit_data);
2192 return bfd_reloc_ok;
2194 case R_SCORE_GOT_LO16:
2195 addend = bfd_get_32 (input_bfd, hit_data);
2196 value = (((addend >> 16) & 0x3) << 14) | ((addend & 0x7fff) >> 1);
2197 value += symbol;
2198 value = (addend & (~(howto->dst_mask))) | ((value & 0x3fff) << 1)
2199 | (((value >> 14) & 0x3) << 16);
2201 bfd_put_32 (input_bfd, value, hit_data);
2202 return bfd_reloc_ok;
2204 case R_SCORE_DUMMY_HI16:
2205 return bfd_reloc_ok;
2207 case R_SCORE_GNU_VTINHERIT:
2208 case R_SCORE_GNU_VTENTRY:
2209 /* We don't do anything with these at present. */
2210 return bfd_reloc_continue;
2212 default:
2213 return bfd_reloc_notsupported;
2217 /* Score backend functions. */
2219 void
2220 s7_bfd_score_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2221 arelent *bfd_reloc,
2222 Elf_Internal_Rela *elf_reloc)
2224 unsigned int r_type;
2226 r_type = ELF32_R_TYPE (elf_reloc->r_info);
2227 if (r_type >= ARRAY_SIZE (elf32_score_howto_table))
2228 bfd_reloc->howto = NULL;
2229 else
2230 bfd_reloc->howto = &elf32_score_howto_table[r_type];
2233 /* Relocate an score ELF section. */
2235 bfd_boolean
2236 s7_bfd_score_elf_relocate_section (bfd *output_bfd,
2237 struct bfd_link_info *info,
2238 bfd *input_bfd,
2239 asection *input_section,
2240 bfd_byte *contents,
2241 Elf_Internal_Rela *relocs,
2242 Elf_Internal_Sym *local_syms,
2243 asection **local_sections)
2245 Elf_Internal_Shdr *symtab_hdr;
2246 struct elf_link_hash_entry **sym_hashes;
2247 Elf_Internal_Rela *rel;
2248 Elf_Internal_Rela *relend;
2249 const char *name;
2250 unsigned long offset;
2251 unsigned long hi16_addend, hi16_offset, hi16_value, uvalue;
2252 size_t extsymoff;
2253 bfd_boolean gp_disp_p = FALSE;
2255 /* Sort dynsym. */
2256 if (elf_hash_table (info)->dynamic_sections_created)
2258 bfd_size_type dynsecsymcount = 0;
2259 if (info->shared)
2261 asection * p;
2262 const struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
2264 for (p = output_bfd->sections; p ; p = p->next)
2265 if ((p->flags & SEC_EXCLUDE) == 0
2266 && (p->flags & SEC_ALLOC) != 0
2267 && !(*bed->elf_backend_omit_section_dynsym) (output_bfd, info, p))
2268 ++ dynsecsymcount;
2271 if (!score_elf_sort_hash_table (info, dynsecsymcount + 1))
2272 return FALSE;
2275 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2276 extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info;
2277 sym_hashes = elf_sym_hashes (input_bfd);
2278 rel = relocs;
2279 relend = relocs + input_section->reloc_count;
2280 for (; rel < relend; rel++)
2282 int r_type;
2283 reloc_howto_type *howto;
2284 unsigned long r_symndx;
2285 Elf_Internal_Sym *sym;
2286 asection *sec;
2287 struct score_elf_link_hash_entry *h;
2288 bfd_vma relocation = 0;
2289 bfd_reloc_status_type r;
2290 arelent bfd_reloc;
2292 r_symndx = ELF32_R_SYM (rel->r_info);
2293 r_type = ELF32_R_TYPE (rel->r_info);
2295 s7_bfd_score_info_to_howto (input_bfd, &bfd_reloc, (Elf_Internal_Rela *) rel);
2296 howto = bfd_reloc.howto;
2298 h = NULL;
2299 sym = NULL;
2300 sec = NULL;
2302 if (r_symndx < extsymoff)
2304 sym = local_syms + r_symndx;
2305 sec = local_sections[r_symndx];
2306 relocation = sec->output_section->vma + sec->output_offset;
2307 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
2309 if (!info->relocatable)
2311 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION
2312 || (sec->flags & SEC_MERGE))
2314 relocation += sym->st_value;
2317 if ((sec->flags & SEC_MERGE)
2318 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2320 asection *msec;
2321 bfd_vma addend, value;
2323 switch (r_type)
2325 case R_SCORE_HI16:
2326 break;
2327 case R_SCORE_LO16:
2328 hi16_addend = bfd_get_32 (input_bfd, contents + rel->r_offset - 4);
2329 hi16_offset = ((((hi16_addend >> 16) & 0x3) << 15) | (hi16_addend & 0x7fff)) >> 1;
2330 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
2331 offset = ((((value >> 16) & 0x3) << 15) | (value & 0x7fff)) >> 1;
2332 addend = (hi16_offset << 16) | (offset & 0xffff);
2333 msec = sec;
2334 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend);
2335 addend -= relocation;
2336 addend += msec->output_section->vma + msec->output_offset;
2337 uvalue = addend;
2338 hi16_offset = (uvalue >> 16) << 1;
2339 hi16_value = (hi16_addend & (~(howto->dst_mask)))
2340 | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000);
2341 bfd_put_32 (input_bfd, hi16_value, contents + rel->r_offset - 4);
2342 offset = (uvalue & 0xffff) << 1;
2343 value = (value & (~(howto->dst_mask)))
2344 | (offset & 0x7fff) | ((offset << 1) & 0x30000);
2345 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
2346 break;
2347 case R_SCORE_GOT_LO16:
2348 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
2349 addend = (((value >> 16) & 0x3) << 14) | ((value & 0x7fff) >> 1);
2350 msec = sec;
2351 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) - relocation;
2352 addend += msec->output_section->vma + msec->output_offset;
2353 value = (value & (~(howto->dst_mask))) | ((addend & 0x3fff) << 1)
2354 | (((addend >> 14) & 0x3) << 16);
2356 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
2357 break;
2358 default:
2359 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
2360 /* Get the (signed) value from the instruction. */
2361 addend = value & howto->src_mask;
2362 if (addend & ((howto->src_mask + 1) >> 1))
2364 bfd_signed_vma mask;
2366 mask = -1;
2367 mask &= ~howto->src_mask;
2368 addend |= mask;
2370 msec = sec;
2371 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) - relocation;
2372 addend += msec->output_section->vma + msec->output_offset;
2373 value = (value & ~howto->dst_mask) | (addend & howto->dst_mask);
2374 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
2375 break;
2380 else
2382 /* For global symbols we look up the symbol in the hash-table. */
2383 h = ((struct score_elf_link_hash_entry *)
2384 elf_sym_hashes (input_bfd) [r_symndx - extsymoff]);
2385 /* Find the real hash-table entry for this symbol. */
2386 while (h->root.root.type == bfd_link_hash_indirect
2387 || h->root.root.type == bfd_link_hash_warning)
2388 h = (struct score_elf_link_hash_entry *) h->root.root.u.i.link;
2390 /* Record the name of this symbol, for our caller. */
2391 name = h->root.root.root.string;
2393 /* See if this is the special GP_DISP_LABEL symbol. Note that such a
2394 symbol must always be a global symbol. */
2395 if (strcmp (name, GP_DISP_LABEL) == 0)
2397 /* Relocations against GP_DISP_LABEL are permitted only with
2398 R_SCORE_HI16 and R_SCORE_LO16 relocations. */
2399 if (r_type != R_SCORE_HI16 && r_type != R_SCORE_LO16)
2400 return bfd_reloc_notsupported;
2402 gp_disp_p = TRUE;
2405 /* If this symbol is defined, calculate its address. Note that
2406 GP_DISP_LABEL is a magic symbol, always implicitly defined by the
2407 linker, so it's inappropriate to check to see whether or not
2408 its defined. */
2409 else if ((h->root.root.type == bfd_link_hash_defined
2410 || h->root.root.type == bfd_link_hash_defweak)
2411 && h->root.root.u.def.section)
2413 sec = h->root.root.u.def.section;
2414 if (sec->output_section)
2415 relocation = (h->root.root.u.def.value
2416 + sec->output_section->vma
2417 + sec->output_offset);
2418 else
2420 relocation = h->root.root.u.def.value;
2423 else if (h->root.root.type == bfd_link_hash_undefweak)
2424 /* We allow relocations against undefined weak symbols, giving
2425 it the value zero, so that you can undefined weak functions
2426 and check to see if they exist by looking at their addresses. */
2427 relocation = 0;
2428 else if (info->unresolved_syms_in_objects == RM_IGNORE
2429 && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT)
2430 relocation = 0;
2431 else if (strcmp (name, "_DYNAMIC_LINK") == 0)
2433 /* If this is a dynamic link, we should have created a _DYNAMIC_LINK symbol
2434 in s7_bfd_score_elf_create_dynamic_sections. Otherwise, we should define
2435 the symbol with a value of 0. */
2436 BFD_ASSERT (! info->shared);
2437 BFD_ASSERT (bfd_get_section_by_name (output_bfd, ".dynamic") == NULL);
2438 relocation = 0;
2440 else if (!info->relocatable)
2442 if (! ((*info->callbacks->undefined_symbol)
2443 (info, h->root.root.root.string, input_bfd,
2444 input_section, rel->r_offset,
2445 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR)
2446 || ELF_ST_VISIBILITY (h->root.other))))
2447 return bfd_reloc_undefined;
2448 relocation = 0;
2452 if (sec != NULL && elf_discarded_section (sec))
2454 /* For relocs against symbols from removed linkonce sections,
2455 or sections discarded by a linker script, we just want the
2456 section contents zeroed. Avoid any special processing. */
2457 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
2458 rel->r_info = 0;
2459 rel->r_addend = 0;
2460 continue;
2463 if (info->relocatable)
2465 /* This is a relocatable link. We don't have to change
2466 anything, unless the reloc is against a section symbol,
2467 in which case we have to adjust according to where the
2468 section symbol winds up in the output section. */
2469 if (r_symndx < symtab_hdr->sh_info)
2471 sym = local_syms + r_symndx;
2473 if (r_type == R_SCORE_GOT15)
2475 const Elf_Internal_Rela *lo16_rel;
2476 const struct elf_backend_data *bed;
2477 bfd_vma lo_addend = 0, lo_value = 0;
2478 bfd_vma addend, value;
2480 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
2481 addend = value & 0x7fff;
2482 if ((addend & 0x4000) == 0x4000)
2483 addend |= 0xffffc000;
2485 bed = get_elf_backend_data (output_bfd);
2486 relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel;
2487 lo16_rel = score_elf_next_relocation (input_bfd, R_SCORE_GOT_LO16, rel, relend);
2488 if (lo16_rel != NULL)
2490 lo_value = bfd_get_32 (input_bfd, contents + lo16_rel->r_offset);
2491 lo_addend = (((lo_value >> 16) & 0x3) << 14) | ((lo_value & 0x7fff) >> 1);
2494 addend <<= 16;
2495 addend += lo_addend;
2497 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2498 addend += local_sections[r_symndx]->output_offset;
2500 lo_addend = addend & 0xffff;
2501 lo_value = (lo_value & (~(howto->dst_mask))) | ((lo_addend & 0x3fff) << 1)
2502 | (((lo_addend >> 14) & 0x3) << 16);
2503 bfd_put_32 (input_bfd, lo_value, contents + lo16_rel->r_offset);
2505 addend = addend >> 16;
2506 value = (value & ~howto->src_mask) | (addend & howto->src_mask);
2507 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
2509 else if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2511 sec = local_sections[r_symndx];
2512 score_elf_add_to_rel (input_bfd, contents + rel->r_offset,
2513 howto, (bfd_signed_vma) (sec->output_offset + sym->st_value));
2516 continue;
2519 /* This is a final link. */
2520 r = score_elf_final_link_relocate (howto, input_bfd, output_bfd,
2521 input_section, contents, rel, relocs,
2522 relocation, info, name,
2523 (h ? ELF_ST_TYPE ((unsigned int) h->root.root.type) :
2524 ELF_ST_TYPE ((unsigned int) sym->st_info)), h, local_syms,
2525 local_sections, gp_disp_p);
2527 if (r != bfd_reloc_ok)
2529 const char *msg = (const char *)0;
2531 switch (r)
2533 case bfd_reloc_overflow:
2534 /* If the overflowing reloc was to an undefined symbol,
2535 we have already printed one error message and there
2536 is no point complaining again. */
2537 if (((!h) || (h->root.root.type != bfd_link_hash_undefined))
2538 && (!((*info->callbacks->reloc_overflow)
2539 (info, NULL, name, howto->name, (bfd_vma) 0,
2540 input_bfd, input_section, rel->r_offset))))
2541 return FALSE;
2542 break;
2543 case bfd_reloc_undefined:
2544 if (!((*info->callbacks->undefined_symbol)
2545 (info, name, input_bfd, input_section, rel->r_offset, TRUE)))
2546 return FALSE;
2547 break;
2549 case bfd_reloc_outofrange:
2550 msg = _("internal error: out of range error");
2551 goto common_error;
2553 case bfd_reloc_notsupported:
2554 msg = _("internal error: unsupported relocation error");
2555 goto common_error;
2557 case bfd_reloc_dangerous:
2558 msg = _("internal error: dangerous error");
2559 goto common_error;
2561 default:
2562 msg = _("internal error: unknown error");
2563 /* fall through */
2565 common_error:
2566 if (!((*info->callbacks->warning)
2567 (info, msg, name, input_bfd, input_section, rel->r_offset)))
2568 return FALSE;
2569 break;
2574 return TRUE;
2577 /* Look through the relocs for a section during the first phase, and
2578 allocate space in the global offset table. */
2580 bfd_boolean
2581 s7_bfd_score_elf_check_relocs (bfd *abfd,
2582 struct bfd_link_info *info,
2583 asection *sec,
2584 const Elf_Internal_Rela *relocs)
2586 const char *name;
2587 bfd *dynobj;
2588 Elf_Internal_Shdr *symtab_hdr;
2589 struct elf_link_hash_entry **sym_hashes;
2590 struct score_got_info *g;
2591 size_t extsymoff;
2592 const Elf_Internal_Rela *rel;
2593 const Elf_Internal_Rela *rel_end;
2594 asection *sgot;
2595 asection *sreloc;
2596 const struct elf_backend_data *bed;
2598 if (info->relocatable)
2599 return TRUE;
2601 dynobj = elf_hash_table (info)->dynobj;
2602 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2603 sym_hashes = elf_sym_hashes (abfd);
2604 extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info;
2606 name = bfd_get_section_name (abfd, sec);
2608 if (dynobj == NULL)
2610 sgot = NULL;
2611 g = NULL;
2613 else
2615 sgot = score_elf_got_section (dynobj, FALSE);
2616 if (sgot == NULL)
2617 g = NULL;
2618 else
2620 BFD_ASSERT (score_elf_section_data (sgot) != NULL);
2621 g = score_elf_section_data (sgot)->u.got_info;
2622 BFD_ASSERT (g != NULL);
2626 sreloc = NULL;
2627 bed = get_elf_backend_data (abfd);
2628 rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel;
2629 for (rel = relocs; rel < rel_end; ++rel)
2631 unsigned long r_symndx;
2632 unsigned int r_type;
2633 struct elf_link_hash_entry *h;
2635 r_symndx = ELF32_R_SYM (rel->r_info);
2636 r_type = ELF32_R_TYPE (rel->r_info);
2638 if (r_symndx < extsymoff)
2640 h = NULL;
2642 else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr))
2644 (*_bfd_error_handler) (_("%s: Malformed reloc detected for section %s"), abfd, name);
2645 bfd_set_error (bfd_error_bad_value);
2646 return FALSE;
2648 else
2650 h = sym_hashes[r_symndx - extsymoff];
2652 /* This may be an indirect symbol created because of a version. */
2653 if (h != NULL)
2655 while (h->root.type == bfd_link_hash_indirect)
2656 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2660 /* Some relocs require a global offset table. */
2661 if (dynobj == NULL || sgot == NULL)
2663 switch (r_type)
2665 case R_SCORE_GOT15:
2666 case R_SCORE_CALL15:
2667 if (dynobj == NULL)
2668 elf_hash_table (info)->dynobj = dynobj = abfd;
2669 if (!score_elf_create_got_section (dynobj, info, FALSE))
2670 return FALSE;
2671 g = score_elf_got_info (dynobj, &sgot);
2672 break;
2673 case R_SCORE_ABS32:
2674 case R_SCORE_REL32:
2675 if (dynobj == NULL && (info->shared || h != NULL) && (sec->flags & SEC_ALLOC) != 0)
2676 elf_hash_table (info)->dynobj = dynobj = abfd;
2677 break;
2678 default:
2679 break;
2683 if (!h && (r_type == R_SCORE_GOT_LO16))
2685 if (! score_elf_record_local_got_symbol (abfd, r_symndx, rel->r_addend, g))
2686 return FALSE;
2689 switch (r_type)
2691 case R_SCORE_CALL15:
2692 if (h == NULL)
2694 (*_bfd_error_handler)
2695 (_("%B: CALL15 reloc at 0x%lx not against global symbol"),
2696 abfd, (unsigned long) rel->r_offset);
2697 bfd_set_error (bfd_error_bad_value);
2698 return FALSE;
2700 else
2702 /* This symbol requires a global offset table entry. */
2703 if (! score_elf_record_global_got_symbol (h, abfd, info, g))
2704 return FALSE;
2706 /* We need a stub, not a plt entry for the undefined function. But we record
2707 it as if it needs plt. See _bfd_elf_adjust_dynamic_symbol. */
2708 h->needs_plt = 1;
2709 h->type = STT_FUNC;
2711 break;
2712 case R_SCORE_GOT15:
2713 if (h && ! score_elf_record_global_got_symbol (h, abfd, info, g))
2714 return FALSE;
2715 break;
2716 case R_SCORE_ABS32:
2717 case R_SCORE_REL32:
2718 if ((info->shared || h != NULL) && (sec->flags & SEC_ALLOC) != 0)
2720 if (sreloc == NULL)
2722 sreloc = score_elf_rel_dyn_section (dynobj, TRUE);
2723 if (sreloc == NULL)
2724 return FALSE;
2726 #define SCORE_READONLY_SECTION (SEC_ALLOC | SEC_LOAD | SEC_READONLY)
2727 if (info->shared)
2729 /* When creating a shared object, we must copy these reloc types into
2730 the output file as R_SCORE_REL32 relocs. We make room for this reloc
2731 in the .rel.dyn reloc section. */
2732 score_elf_allocate_dynamic_relocations (dynobj, 1);
2733 if ((sec->flags & SCORE_READONLY_SECTION)
2734 == SCORE_READONLY_SECTION)
2735 /* We tell the dynamic linker that there are
2736 relocations against the text segment. */
2737 info->flags |= DF_TEXTREL;
2739 else
2741 struct score_elf_link_hash_entry *hscore;
2743 /* We only need to copy this reloc if the symbol is
2744 defined in a dynamic object. */
2745 hscore = (struct score_elf_link_hash_entry *) h;
2746 ++hscore->possibly_dynamic_relocs;
2747 if ((sec->flags & SCORE_READONLY_SECTION)
2748 == SCORE_READONLY_SECTION)
2749 /* We need it to tell the dynamic linker if there
2750 are relocations against the text segment. */
2751 hscore->readonly_reloc = TRUE;
2754 /* Even though we don't directly need a GOT entry for this symbol,
2755 a symbol must have a dynamic symbol table index greater that
2756 DT_SCORE_GOTSYM if there are dynamic relocations against it. */
2757 if (h != NULL)
2759 if (dynobj == NULL)
2760 elf_hash_table (info)->dynobj = dynobj = abfd;
2761 if (! score_elf_create_got_section (dynobj, info, TRUE))
2762 return FALSE;
2763 g = score_elf_got_info (dynobj, &sgot);
2764 if (! score_elf_record_global_got_symbol (h, abfd, info, g))
2765 return FALSE;
2768 break;
2770 /* This relocation describes the C++ object vtable hierarchy.
2771 Reconstruct it for later use during GC. */
2772 case R_SCORE_GNU_VTINHERIT:
2773 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2774 return FALSE;
2775 break;
2777 /* This relocation describes which C++ vtable entries are actually
2778 used. Record for later use during GC. */
2779 case R_SCORE_GNU_VTENTRY:
2780 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
2781 return FALSE;
2782 break;
2783 default:
2784 break;
2787 /* We must not create a stub for a symbol that has relocations
2788 related to taking the function's address. */
2789 switch (r_type)
2791 default:
2792 if (h != NULL)
2794 struct score_elf_link_hash_entry *sh;
2796 sh = (struct score_elf_link_hash_entry *) h;
2797 sh->no_fn_stub = TRUE;
2799 break;
2800 case R_SCORE_CALL15:
2801 break;
2805 return TRUE;
2808 bfd_boolean
2809 s7_bfd_score_elf_add_symbol_hook (bfd *abfd,
2810 struct bfd_link_info *info ATTRIBUTE_UNUSED,
2811 Elf_Internal_Sym *sym,
2812 const char **namep ATTRIBUTE_UNUSED,
2813 flagword *flagsp ATTRIBUTE_UNUSED,
2814 asection **secp,
2815 bfd_vma *valp)
2817 switch (sym->st_shndx)
2819 case SHN_COMMON:
2820 if (sym->st_size > elf_gp_size (abfd))
2821 break;
2822 /* Fall through. */
2823 case SHN_SCORE_SCOMMON:
2824 *secp = bfd_make_section_old_way (abfd, ".scommon");
2825 (*secp)->flags |= SEC_IS_COMMON;
2826 *valp = sym->st_size;
2827 break;
2830 return TRUE;
2833 void
2834 s7_bfd_score_elf_symbol_processing (bfd *abfd, asymbol *asym)
2836 elf_symbol_type *elfsym;
2838 elfsym = (elf_symbol_type *) asym;
2839 switch (elfsym->internal_elf_sym.st_shndx)
2841 case SHN_COMMON:
2842 if (asym->value > elf_gp_size (abfd))
2843 break;
2844 /* Fall through. */
2845 case SHN_SCORE_SCOMMON:
2846 if (score_elf_scom_section.name == NULL)
2848 /* Initialize the small common section. */
2849 score_elf_scom_section.name = ".scommon";
2850 score_elf_scom_section.flags = SEC_IS_COMMON;
2851 score_elf_scom_section.output_section = &score_elf_scom_section;
2852 score_elf_scom_section.symbol = &score_elf_scom_symbol;
2853 score_elf_scom_section.symbol_ptr_ptr = &score_elf_scom_symbol_ptr;
2854 score_elf_scom_symbol.name = ".scommon";
2855 score_elf_scom_symbol.flags = BSF_SECTION_SYM;
2856 score_elf_scom_symbol.section = &score_elf_scom_section;
2857 score_elf_scom_symbol_ptr = &score_elf_scom_symbol;
2859 asym->section = &score_elf_scom_section;
2860 asym->value = elfsym->internal_elf_sym.st_size;
2861 break;
2866 s7_bfd_score_elf_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED,
2867 const char *name ATTRIBUTE_UNUSED,
2868 Elf_Internal_Sym *sym,
2869 asection *input_sec,
2870 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
2872 /* If we see a common symbol, which implies a relocatable link, then
2873 if a symbol was small common in an input file, mark it as small
2874 common in the output file. */
2875 if (sym->st_shndx == SHN_COMMON && strcmp (input_sec->name, ".scommon") == 0)
2876 sym->st_shndx = SHN_SCORE_SCOMMON;
2878 return 1;
2881 bfd_boolean
2882 s7_bfd_score_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
2883 asection *sec,
2884 int *retval)
2886 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
2888 *retval = SHN_SCORE_SCOMMON;
2889 return TRUE;
2892 return FALSE;
2895 /* Adjust a symbol defined by a dynamic object and referenced by a
2896 regular object. The current definition is in some section of the
2897 dynamic object, but we're not including those sections. We have to
2898 change the definition to something the rest of the link can understand. */
2900 bfd_boolean
2901 s7_bfd_score_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2902 struct elf_link_hash_entry *h)
2904 bfd *dynobj;
2905 struct score_elf_link_hash_entry *hscore;
2906 asection *s;
2908 dynobj = elf_hash_table (info)->dynobj;
2910 /* Make sure we know what is going on here. */
2911 BFD_ASSERT (dynobj != NULL
2912 && (h->needs_plt
2913 || h->u.weakdef != NULL
2914 || (h->def_dynamic && h->ref_regular && !h->def_regular)));
2916 /* If this symbol is defined in a dynamic object, we need to copy
2917 any R_SCORE_ABS32 or R_SCORE_REL32 relocs against it into the output
2918 file. */
2919 hscore = (struct score_elf_link_hash_entry *) h;
2920 if (!info->relocatable
2921 && hscore->possibly_dynamic_relocs != 0
2922 && (h->root.type == bfd_link_hash_defweak || !h->def_regular))
2924 score_elf_allocate_dynamic_relocations (dynobj, hscore->possibly_dynamic_relocs);
2925 if (hscore->readonly_reloc)
2926 /* We tell the dynamic linker that there are relocations
2927 against the text segment. */
2928 info->flags |= DF_TEXTREL;
2931 /* For a function, create a stub, if allowed. */
2932 if (!hscore->no_fn_stub && h->needs_plt)
2934 if (!elf_hash_table (info)->dynamic_sections_created)
2935 return TRUE;
2937 /* If this symbol is not defined in a regular file, then set
2938 the symbol to the stub location. This is required to make
2939 function pointers compare as equal between the normal
2940 executable and the shared library. */
2941 if (!h->def_regular)
2943 /* We need .stub section. */
2944 s = bfd_get_section_by_name (dynobj, SCORE_ELF_STUB_SECTION_NAME);
2945 BFD_ASSERT (s != NULL);
2947 h->root.u.def.section = s;
2948 h->root.u.def.value = s->size;
2950 /* XXX Write this stub address somewhere. */
2951 h->plt.offset = s->size;
2953 /* Make room for this stub code. */
2954 s->size += SCORE_FUNCTION_STUB_SIZE;
2956 /* The last half word of the stub will be filled with the index
2957 of this symbol in .dynsym section. */
2958 return TRUE;
2961 else if ((h->type == STT_FUNC) && !h->needs_plt)
2963 /* This will set the entry for this symbol in the GOT to 0, and
2964 the dynamic linker will take care of this. */
2965 h->root.u.def.value = 0;
2966 return TRUE;
2969 /* If this is a weak symbol, and there is a real definition, the
2970 processor independent code will have arranged for us to see the
2971 real definition first, and we can just use the same value. */
2972 if (h->u.weakdef != NULL)
2974 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2975 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2976 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2977 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2978 return TRUE;
2981 /* This is a reference to a symbol defined by a dynamic object which
2982 is not a function. */
2983 return TRUE;
2986 /* This function is called after all the input files have been read,
2987 and the input sections have been assigned to output sections. */
2989 bfd_boolean
2990 s7_bfd_score_elf_always_size_sections (bfd *output_bfd,
2991 struct bfd_link_info *info)
2993 bfd *dynobj;
2994 asection *s;
2995 struct score_got_info *g;
2996 int i;
2997 bfd_size_type loadable_size = 0;
2998 bfd_size_type local_gotno;
2999 bfd *sub;
3001 dynobj = elf_hash_table (info)->dynobj;
3002 if (dynobj == NULL)
3003 /* Relocatable links don't have it. */
3004 return TRUE;
3006 g = score_elf_got_info (dynobj, &s);
3007 if (s == NULL)
3008 return TRUE;
3010 /* Calculate the total loadable size of the output. That will give us the
3011 maximum number of GOT_PAGE entries required. */
3012 for (sub = info->input_bfds; sub; sub = sub->link_next)
3014 asection *subsection;
3016 for (subsection = sub->sections;
3017 subsection;
3018 subsection = subsection->next)
3020 if ((subsection->flags & SEC_ALLOC) == 0)
3021 continue;
3022 loadable_size += ((subsection->size + 0xf)
3023 &~ (bfd_size_type) 0xf);
3027 /* There has to be a global GOT entry for every symbol with
3028 a dynamic symbol table index of DT_SCORE_GOTSYM or
3029 higher. Therefore, it make sense to put those symbols
3030 that need GOT entries at the end of the symbol table. We
3031 do that here. */
3032 if (! score_elf_sort_hash_table (info, 1))
3033 return FALSE;
3035 if (g->global_gotsym != NULL)
3036 i = elf_hash_table (info)->dynsymcount - g->global_gotsym->dynindx;
3037 else
3038 /* If there are no global symbols, or none requiring
3039 relocations, then GLOBAL_GOTSYM will be NULL. */
3040 i = 0;
3042 /* In the worst case, we'll get one stub per dynamic symbol. */
3043 loadable_size += SCORE_FUNCTION_STUB_SIZE * i;
3045 /* Assume there are two loadable segments consisting of
3046 contiguous sections. Is 5 enough? */
3047 local_gotno = (loadable_size >> 16) + 5;
3049 g->local_gotno += local_gotno;
3050 s->size += g->local_gotno * SCORE_ELF_GOT_SIZE (output_bfd);
3052 g->global_gotno = i;
3053 s->size += i * SCORE_ELF_GOT_SIZE (output_bfd);
3055 score_elf_resolve_final_got_entries (g);
3057 if (s->size > SCORE_ELF_GOT_MAX_SIZE (output_bfd))
3059 /* Fixme. Error message or Warning message should be issued here. */
3062 return TRUE;
3065 /* Set the sizes of the dynamic sections. */
3067 bfd_boolean
3068 s7_bfd_score_elf_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
3070 bfd *dynobj;
3071 asection *s;
3072 bfd_boolean reltext;
3074 dynobj = elf_hash_table (info)->dynobj;
3075 BFD_ASSERT (dynobj != NULL);
3077 if (elf_hash_table (info)->dynamic_sections_created)
3079 /* Set the contents of the .interp section to the interpreter. */
3080 if (!info->shared)
3082 s = bfd_get_section_by_name (dynobj, ".interp");
3083 BFD_ASSERT (s != NULL);
3084 s->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1;
3085 s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
3089 /* The check_relocs and adjust_dynamic_symbol entry points have
3090 determined the sizes of the various dynamic sections. Allocate
3091 memory for them. */
3092 reltext = FALSE;
3093 for (s = dynobj->sections; s != NULL; s = s->next)
3095 const char *name;
3097 if ((s->flags & SEC_LINKER_CREATED) == 0)
3098 continue;
3100 /* It's OK to base decisions on the section name, because none
3101 of the dynobj section names depend upon the input files. */
3102 name = bfd_get_section_name (dynobj, s);
3104 if (CONST_STRNEQ (name, ".rel"))
3106 if (s->size == 0)
3108 /* We only strip the section if the output section name
3109 has the same name. Otherwise, there might be several
3110 input sections for this output section. FIXME: This
3111 code is probably not needed these days anyhow, since
3112 the linker now does not create empty output sections. */
3113 if (s->output_section != NULL
3114 && strcmp (name,
3115 bfd_get_section_name (s->output_section->owner,
3116 s->output_section)) == 0)
3117 s->flags |= SEC_EXCLUDE;
3119 else
3121 const char *outname;
3122 asection *target;
3124 /* If this relocation section applies to a read only
3125 section, then we probably need a DT_TEXTREL entry.
3126 If the relocation section is .rel.dyn, we always
3127 assert a DT_TEXTREL entry rather than testing whether
3128 there exists a relocation to a read only section or
3129 not. */
3130 outname = bfd_get_section_name (output_bfd, s->output_section);
3131 target = bfd_get_section_by_name (output_bfd, outname + 4);
3132 if ((target != NULL
3133 && (target->flags & SEC_READONLY) != 0
3134 && (target->flags & SEC_ALLOC) != 0) || strcmp (outname, ".rel.dyn") == 0)
3135 reltext = TRUE;
3137 /* We use the reloc_count field as a counter if we need
3138 to copy relocs into the output file. */
3139 if (strcmp (name, ".rel.dyn") != 0)
3140 s->reloc_count = 0;
3143 else if (CONST_STRNEQ (name, ".got"))
3145 /* s7_bfd_score_elf_always_size_sections() has already done
3146 most of the work, but some symbols may have been mapped
3147 to versions that we must now resolve in the got_entries
3148 hash tables. */
3150 else if (strcmp (name, SCORE_ELF_STUB_SECTION_NAME) == 0)
3152 /* IRIX rld assumes that the function stub isn't at the end
3153 of .text section. So put a dummy. XXX */
3154 s->size += SCORE_FUNCTION_STUB_SIZE;
3156 else if (! CONST_STRNEQ (name, ".init"))
3158 /* It's not one of our sections, so don't allocate space. */
3159 continue;
3162 /* Allocate memory for the section contents. */
3163 s->contents = bfd_zalloc (dynobj, s->size);
3164 if (s->contents == NULL && s->size != 0)
3166 bfd_set_error (bfd_error_no_memory);
3167 return FALSE;
3171 if (elf_hash_table (info)->dynamic_sections_created)
3173 /* Add some entries to the .dynamic section. We fill in the
3174 values later, in s7_bfd_score_elf_finish_dynamic_sections, but we
3175 must add the entries now so that we get the correct size for
3176 the .dynamic section. The DT_DEBUG entry is filled in by the
3177 dynamic linker and used by the debugger. */
3179 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0))
3180 return FALSE;
3182 if (reltext)
3183 info->flags |= DF_TEXTREL;
3185 if ((info->flags & DF_TEXTREL) != 0)
3187 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0))
3188 return FALSE;
3191 if (! SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0))
3192 return FALSE;
3194 if (score_elf_rel_dyn_section (dynobj, FALSE))
3196 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0))
3197 return FALSE;
3199 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0))
3200 return FALSE;
3202 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0))
3203 return FALSE;
3206 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_BASE_ADDRESS, 0))
3207 return FALSE;
3209 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_LOCAL_GOTNO, 0))
3210 return FALSE;
3212 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_SYMTABNO, 0))
3213 return FALSE;
3215 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_UNREFEXTNO, 0))
3216 return FALSE;
3218 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_GOTSYM, 0))
3219 return FALSE;
3221 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_HIPAGENO, 0))
3222 return FALSE;
3225 return TRUE;
3228 bfd_boolean
3229 s7_bfd_score_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3231 struct elf_link_hash_entry *h;
3232 struct bfd_link_hash_entry *bh;
3233 flagword flags;
3234 asection *s;
3236 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3237 | SEC_LINKER_CREATED | SEC_READONLY);
3239 /* ABI requests the .dynamic section to be read only. */
3240 s = bfd_get_section_by_name (abfd, ".dynamic");
3241 if (s != NULL)
3243 if (!bfd_set_section_flags (abfd, s, flags))
3244 return FALSE;
3247 /* We need to create .got section. */
3248 if (!score_elf_create_got_section (abfd, info, FALSE))
3249 return FALSE;
3251 if (!score_elf_rel_dyn_section (elf_hash_table (info)->dynobj, TRUE))
3252 return FALSE;
3254 /* Create .stub section. */
3255 if (bfd_get_section_by_name (abfd, SCORE_ELF_STUB_SECTION_NAME) == NULL)
3257 s = bfd_make_section_with_flags (abfd, SCORE_ELF_STUB_SECTION_NAME,
3258 flags | SEC_CODE);
3259 if (s == NULL
3260 || !bfd_set_section_alignment (abfd, s, 2))
3262 return FALSE;
3265 if (!info->shared)
3267 const char *name;
3269 name = "_DYNAMIC_LINK";
3270 bh = NULL;
3271 if (!(_bfd_generic_link_add_one_symbol
3272 (info, abfd, name, BSF_GLOBAL, bfd_abs_section_ptr,
3273 (bfd_vma) 0, NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh)))
3274 return FALSE;
3276 h = (struct elf_link_hash_entry *) bh;
3277 h->non_elf = 0;
3278 h->def_regular = 1;
3279 h->type = STT_SECTION;
3281 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3282 return FALSE;
3285 return TRUE;
3289 /* Finish up dynamic symbol handling. We set the contents of various
3290 dynamic sections here. */
3292 bfd_boolean
3293 s7_bfd_score_elf_finish_dynamic_symbol (bfd *output_bfd,
3294 struct bfd_link_info *info,
3295 struct elf_link_hash_entry *h,
3296 Elf_Internal_Sym *sym)
3298 bfd *dynobj;
3299 asection *sgot;
3300 struct score_got_info *g;
3301 const char *name;
3303 dynobj = elf_hash_table (info)->dynobj;
3305 if (h->plt.offset != MINUS_ONE)
3307 asection *s;
3308 bfd_byte stub[SCORE_FUNCTION_STUB_SIZE];
3310 /* This symbol has a stub. Set it up. */
3311 BFD_ASSERT (h->dynindx != -1);
3313 s = bfd_get_section_by_name (dynobj, SCORE_ELF_STUB_SECTION_NAME);
3314 BFD_ASSERT (s != NULL);
3316 /* FIXME: Can h->dynindex be more than 64K? */
3317 if (h->dynindx & 0xffff0000)
3318 return FALSE;
3320 /* Fill the stub. */
3321 bfd_put_32 (output_bfd, STUB_LW, stub);
3322 bfd_put_32 (output_bfd, STUB_MOVE, stub + 4);
3323 bfd_put_32 (output_bfd, STUB_LI16 | (h->dynindx << 1), stub + 8);
3324 bfd_put_32 (output_bfd, STUB_BRL, stub + 12);
3326 BFD_ASSERT (h->plt.offset <= s->size);
3327 memcpy (s->contents + h->plt.offset, stub, SCORE_FUNCTION_STUB_SIZE);
3329 /* Mark the symbol as undefined. plt.offset != -1 occurs
3330 only for the referenced symbol. */
3331 sym->st_shndx = SHN_UNDEF;
3333 /* The run-time linker uses the st_value field of the symbol
3334 to reset the global offset table entry for this external
3335 to its stub address when unlinking a shared object. */
3336 sym->st_value = (s->output_section->vma + s->output_offset + h->plt.offset);
3339 BFD_ASSERT (h->dynindx != -1 || h->forced_local);
3341 sgot = score_elf_got_section (dynobj, FALSE);
3342 BFD_ASSERT (sgot != NULL);
3343 BFD_ASSERT (score_elf_section_data (sgot) != NULL);
3344 g = score_elf_section_data (sgot)->u.got_info;
3345 BFD_ASSERT (g != NULL);
3347 /* Run through the global symbol table, creating GOT entries for all
3348 the symbols that need them. */
3349 if (g->global_gotsym != NULL && h->dynindx >= g->global_gotsym->dynindx)
3351 bfd_vma offset;
3352 bfd_vma value;
3354 value = sym->st_value;
3355 offset = score_elf_global_got_index (dynobj, h);
3356 bfd_put_32 (output_bfd, value, sgot->contents + offset);
3359 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
3360 name = h->root.root.string;
3361 if (strcmp (name, "_DYNAMIC") == 0 || strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0)
3362 sym->st_shndx = SHN_ABS;
3363 else if (strcmp (name, "_DYNAMIC_LINK") == 0)
3365 sym->st_shndx = SHN_ABS;
3366 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
3367 sym->st_value = 1;
3369 else if (strcmp (name, GP_DISP_LABEL) == 0)
3371 sym->st_shndx = SHN_ABS;
3372 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
3373 sym->st_value = elf_gp (output_bfd);
3376 return TRUE;
3379 /* Finish up the dynamic sections. */
3381 bfd_boolean
3382 s7_bfd_score_elf_finish_dynamic_sections (bfd *output_bfd,
3383 struct bfd_link_info *info)
3385 bfd *dynobj;
3386 asection *sdyn;
3387 asection *sgot;
3388 asection *s;
3389 struct score_got_info *g;
3391 dynobj = elf_hash_table (info)->dynobj;
3393 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3395 sgot = score_elf_got_section (dynobj, FALSE);
3396 if (sgot == NULL)
3397 g = NULL;
3398 else
3400 BFD_ASSERT (score_elf_section_data (sgot) != NULL);
3401 g = score_elf_section_data (sgot)->u.got_info;
3402 BFD_ASSERT (g != NULL);
3405 if (elf_hash_table (info)->dynamic_sections_created)
3407 bfd_byte *b;
3409 BFD_ASSERT (sdyn != NULL);
3410 BFD_ASSERT (g != NULL);
3412 for (b = sdyn->contents;
3413 b < sdyn->contents + sdyn->size;
3414 b += SCORE_ELF_DYN_SIZE (dynobj))
3416 Elf_Internal_Dyn dyn;
3417 const char *name;
3418 size_t elemsize;
3419 bfd_boolean swap_out_p;
3421 /* Read in the current dynamic entry. */
3422 (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn);
3424 /* Assume that we're going to modify it and write it out. */
3425 swap_out_p = TRUE;
3427 switch (dyn.d_tag)
3429 case DT_RELENT:
3430 s = score_elf_rel_dyn_section (dynobj, FALSE);
3431 BFD_ASSERT (s != NULL);
3432 dyn.d_un.d_val = SCORE_ELF_REL_SIZE (dynobj);
3433 break;
3435 case DT_STRSZ:
3436 /* Rewrite DT_STRSZ. */
3437 dyn.d_un.d_val = _bfd_elf_strtab_size (elf_hash_table (info)->dynstr);
3438 break;
3440 case DT_PLTGOT:
3441 name = ".got";
3442 s = bfd_get_section_by_name (output_bfd, name);
3443 BFD_ASSERT (s != NULL);
3444 dyn.d_un.d_ptr = s->vma;
3445 break;
3447 case DT_SCORE_BASE_ADDRESS:
3448 s = output_bfd->sections;
3449 BFD_ASSERT (s != NULL);
3450 dyn.d_un.d_ptr = s->vma & ~(bfd_vma) 0xffff;
3451 break;
3453 case DT_SCORE_LOCAL_GOTNO:
3454 dyn.d_un.d_val = g->local_gotno;
3455 break;
3457 case DT_SCORE_UNREFEXTNO:
3458 /* The index into the dynamic symbol table which is the
3459 entry of the first external symbol that is not
3460 referenced within the same object. */
3461 dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1;
3462 break;
3464 case DT_SCORE_GOTSYM:
3465 if (g->global_gotsym)
3467 dyn.d_un.d_val = g->global_gotsym->dynindx;
3468 break;
3470 /* In case if we don't have global got symbols we default
3471 to setting DT_SCORE_GOTSYM to the same value as
3472 DT_SCORE_SYMTABNO, so we just fall through. */
3474 case DT_SCORE_SYMTABNO:
3475 name = ".dynsym";
3476 elemsize = SCORE_ELF_SYM_SIZE (output_bfd);
3477 s = bfd_get_section_by_name (output_bfd, name);
3478 BFD_ASSERT (s != NULL);
3480 dyn.d_un.d_val = s->size / elemsize;
3481 break;
3483 case DT_SCORE_HIPAGENO:
3484 dyn.d_un.d_val = g->local_gotno - SCORE_RESERVED_GOTNO;
3485 break;
3487 default:
3488 swap_out_p = FALSE;
3489 break;
3492 if (swap_out_p)
3493 (*get_elf_backend_data (dynobj)->s->swap_dyn_out) (dynobj, &dyn, b);
3497 /* The first entry of the global offset table will be filled at
3498 runtime. The second entry will be used by some runtime loaders.
3499 This isn't the case of IRIX rld. */
3500 if (sgot != NULL && sgot->size > 0)
3502 bfd_put_32 (output_bfd, 0, sgot->contents);
3503 bfd_put_32 (output_bfd, 0x80000000, sgot->contents + SCORE_ELF_GOT_SIZE (output_bfd));
3506 if (sgot != NULL)
3507 elf_section_data (sgot->output_section)->this_hdr.sh_entsize
3508 = SCORE_ELF_GOT_SIZE (output_bfd);
3511 /* We need to sort the entries of the dynamic relocation section. */
3512 s = score_elf_rel_dyn_section (dynobj, FALSE);
3514 if (s != NULL && s->size > (bfd_vma)2 * SCORE_ELF_REL_SIZE (output_bfd))
3516 reldyn_sorting_bfd = output_bfd;
3517 qsort ((Elf32_External_Rel *) s->contents + 1, s->reloc_count - 1,
3518 sizeof (Elf32_External_Rel), score_elf_sort_dynamic_relocs);
3521 return TRUE;
3524 /* This function set up the ELF section header for a BFD section in preparation for writing
3525 it out. This is where the flags and type fields are set for unusual sections. */
3527 bfd_boolean
3528 s7_bfd_score_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3529 Elf_Internal_Shdr *hdr,
3530 asection *sec)
3532 const char *name;
3534 name = bfd_get_section_name (abfd, sec);
3536 if (strcmp (name, ".got") == 0
3537 || strcmp (name, ".srdata") == 0
3538 || strcmp (name, ".sdata") == 0
3539 || strcmp (name, ".sbss") == 0)
3540 hdr->sh_flags |= SHF_SCORE_GPREL;
3542 return TRUE;
3545 /* This function do additional processing on the ELF section header before writing
3546 it out. This is used to set the flags and type fields for some sections. */
3548 /* assign_file_positions_except_relocs() check section flag and if it is allocatable,
3549 warning message will be issued. backend_fake_section is called before
3550 assign_file_positions_except_relocs(); backend_section_processing after it. so, we
3551 modify section flag there, but not backend_fake_section. */
3553 bfd_boolean
3554 s7_bfd_score_elf_section_processing (bfd *abfd ATTRIBUTE_UNUSED, Elf_Internal_Shdr *hdr)
3556 if (hdr->bfd_section != NULL)
3558 const char *name = bfd_get_section_name (abfd, hdr->bfd_section);
3560 if (strcmp (name, ".sdata") == 0)
3562 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_SCORE_GPREL;
3563 hdr->sh_type = SHT_PROGBITS;
3565 else if (strcmp (name, ".sbss") == 0)
3567 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_SCORE_GPREL;
3568 hdr->sh_type = SHT_NOBITS;
3570 else if (strcmp (name, ".srdata") == 0)
3572 hdr->sh_flags |= SHF_ALLOC | SHF_SCORE_GPREL;
3573 hdr->sh_type = SHT_PROGBITS;
3577 return TRUE;
3580 bfd_boolean
3581 s7_bfd_score_elf_write_section (bfd *output_bfd, asection *sec, bfd_byte *contents)
3583 bfd_byte *to, *from, *end;
3584 int i;
3586 if (strcmp (sec->name, ".pdr") != 0)
3587 return FALSE;
3589 if (score_elf_section_data (sec)->u.tdata == NULL)
3590 return FALSE;
3592 to = contents;
3593 end = contents + sec->size;
3594 for (from = contents, i = 0; from < end; from += PDR_SIZE, i++)
3596 if ((score_elf_section_data (sec)->u.tdata)[i] == 1)
3597 continue;
3599 if (to != from)
3600 memcpy (to, from, PDR_SIZE);
3602 to += PDR_SIZE;
3604 bfd_set_section_contents (output_bfd, sec->output_section, contents,
3605 (file_ptr) sec->output_offset, sec->size);
3607 return TRUE;
3610 /* Copy data from a SCORE ELF indirect symbol to its direct symbol, hiding the old
3611 indirect symbol. Process additional relocation information. */
3613 void
3614 s7_bfd_score_elf_copy_indirect_symbol (struct bfd_link_info *info,
3615 struct elf_link_hash_entry *dir,
3616 struct elf_link_hash_entry *ind)
3618 struct score_elf_link_hash_entry *dirscore, *indscore;
3620 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3622 if (ind->root.type != bfd_link_hash_indirect)
3623 return;
3625 dirscore = (struct score_elf_link_hash_entry *) dir;
3626 indscore = (struct score_elf_link_hash_entry *) ind;
3627 dirscore->possibly_dynamic_relocs += indscore->possibly_dynamic_relocs;
3629 if (indscore->readonly_reloc)
3630 dirscore->readonly_reloc = TRUE;
3632 if (indscore->no_fn_stub)
3633 dirscore->no_fn_stub = TRUE;
3636 /* Remove information about discarded functions from other sections which mention them. */
3638 bfd_boolean
3639 s7_bfd_score_elf_discard_info (bfd *abfd,
3640 struct elf_reloc_cookie *cookie,
3641 struct bfd_link_info *info)
3643 asection *o;
3644 bfd_boolean ret = FALSE;
3645 unsigned char *tdata;
3646 size_t i, skip;
3648 o = bfd_get_section_by_name (abfd, ".pdr");
3649 if ((!o) || (o->size == 0) || (o->size % PDR_SIZE != 0)
3650 || (o->output_section != NULL && bfd_is_abs_section (o->output_section)))
3651 return FALSE;
3653 tdata = bfd_zmalloc (o->size / PDR_SIZE);
3654 if (!tdata)
3655 return FALSE;
3657 cookie->rels = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, info->keep_memory);
3658 if (!cookie->rels)
3660 free (tdata);
3661 return FALSE;
3664 cookie->rel = cookie->rels;
3665 cookie->relend = cookie->rels + o->reloc_count;
3667 for (i = 0, skip = 0; i < o->size; i++)
3669 if (bfd_elf_reloc_symbol_deleted_p (i * PDR_SIZE, cookie))
3671 tdata[i] = 1;
3672 skip++;
3676 if (skip != 0)
3678 score_elf_section_data (o)->u.tdata = tdata;
3679 o->size -= skip * PDR_SIZE;
3680 ret = TRUE;
3682 else
3683 free (tdata);
3685 if (!info->keep_memory)
3686 free (cookie->rels);
3688 return ret;
3691 /* Signal that discard_info() has removed the discarded relocations for this section. */
3693 bfd_boolean
3694 s7_bfd_score_elf_ignore_discarded_relocs (asection *sec)
3696 if (strcmp (sec->name, ".pdr") == 0)
3697 return TRUE;
3698 return FALSE;
3701 /* Return the section that should be marked against GC for a given
3702 relocation. */
3704 asection *
3705 s7_bfd_score_elf_gc_mark_hook (asection *sec,
3706 struct bfd_link_info *info,
3707 Elf_Internal_Rela *rel,
3708 struct elf_link_hash_entry *h,
3709 Elf_Internal_Sym *sym)
3711 if (h != NULL)
3712 switch (ELF32_R_TYPE (rel->r_info))
3714 case R_SCORE_GNU_VTINHERIT:
3715 case R_SCORE_GNU_VTENTRY:
3716 return NULL;
3719 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
3722 /* Support for core dump NOTE sections. */
3724 bfd_boolean
3725 s7_bfd_score_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
3727 int offset;
3728 unsigned int raw_size;
3730 switch (note->descsz)
3732 default:
3733 return FALSE;
3734 case 272: /* Linux/Score elf_prstatus */
3736 /* pr_cursig */
3737 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
3739 /* pr_pid */
3740 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
3742 /* pr_reg */
3743 offset = 72;
3745 /* sizeof(elf_gregset_t) */
3746 raw_size = 196;
3748 break;
3751 /* Make a ".reg/999" section. */
3752 return _bfd_elfcore_make_pseudosection (abfd, ".reg", raw_size, note->descpos + offset);
3755 bfd_boolean
3756 s7_bfd_score_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3758 switch (note->descsz)
3760 default:
3761 return FALSE;
3763 case 128: /* Linux/Score elf_prpsinfo. */
3764 /* pr_fname */
3765 elf_tdata (abfd)->core_program = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
3767 /* pr_psargs */
3768 elf_tdata (abfd)->core_command = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
3769 break;
3772 /* Note that for some reason, a spurious space is tacked
3773 onto the end of the args in some (at least one anyway)
3774 implementations, so strip it off if it exists. */
3777 char *command = elf_tdata (abfd)->core_command;
3778 int n = strlen (command);
3780 if (0 < n && command[n - 1] == ' ')
3781 command[n - 1] = '\0';
3784 return TRUE;
3788 /* Score BFD functions. */
3790 reloc_howto_type *
3791 s7_elf32_score_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code)
3793 unsigned int i;
3795 for (i = 0; i < ARRAY_SIZE (elf32_score_reloc_map); i++)
3796 if (elf32_score_reloc_map[i].bfd_reloc_val == code)
3797 return &elf32_score_howto_table[elf32_score_reloc_map[i].elf_reloc_val];
3799 return NULL;
3802 bfd_boolean
3803 s7_elf32_score_print_private_bfd_data (bfd *abfd, void * ptr)
3805 FILE *file = (FILE *) ptr;
3807 BFD_ASSERT (abfd != NULL && ptr != NULL);
3809 /* Print normal ELF private data. */
3810 _bfd_elf_print_private_bfd_data (abfd, ptr);
3812 /* xgettext:c-format */
3813 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
3814 if (elf_elfheader (abfd)->e_flags & EF_SCORE_PIC)
3816 fprintf (file, _(" [pic]"));
3818 if (elf_elfheader (abfd)->e_flags & EF_SCORE_FIXDEP)
3820 fprintf (file, _(" [fix dep]"));
3822 fputc ('\n', file);
3824 return TRUE;
3827 bfd_boolean
3828 s7_elf32_score_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3830 flagword in_flags;
3831 flagword out_flags;
3833 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
3834 return FALSE;
3836 in_flags = elf_elfheader (ibfd)->e_flags;
3837 out_flags = elf_elfheader (obfd)->e_flags;
3839 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3840 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3841 return TRUE;
3843 in_flags = elf_elfheader (ibfd)->e_flags;
3844 out_flags = elf_elfheader (obfd)->e_flags;
3846 if (! elf_flags_init (obfd))
3848 elf_flags_init (obfd) = TRUE;
3849 elf_elfheader (obfd)->e_flags = in_flags;
3851 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3852 && bfd_get_arch_info (obfd)->the_default)
3854 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
3857 return TRUE;
3860 if (((in_flags & EF_SCORE_PIC) != 0) != ((out_flags & EF_SCORE_PIC) != 0))
3862 (*_bfd_error_handler) (_("%B: warning: linking PIC files with non-PIC files"), ibfd);
3865 /* Maybe dependency fix compatibility should be checked here. */
3866 return TRUE;
3869 bfd_boolean
3870 s7_elf32_score_new_section_hook (bfd *abfd, asection *sec)
3872 struct _score_elf_section_data *sdata;
3873 bfd_size_type amt = sizeof (*sdata);
3875 sdata = bfd_zalloc (abfd, amt);
3876 if (sdata == NULL)
3877 return FALSE;
3878 sec->used_by_bfd = sdata;
3880 return _bfd_elf_new_section_hook (abfd, sec);
3883 #define elf_backend_omit_section_dynsym \
3884 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)