1 /* Matsushita 10300 specific support for 32-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
3 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
25 #include "elf/mn10300.h"
27 static bfd_reloc_status_type mn10300_elf_final_link_relocate
28 PARAMS ((reloc_howto_type *, bfd *, bfd *, asection *, bfd_byte *,
29 bfd_vma, bfd_vma, bfd_vma,
30 struct elf_link_hash_entry *, unsigned long, struct bfd_link_info *,
32 static bfd_boolean mn10300_elf_relocate_section
33 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
34 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
35 static bfd_boolean mn10300_elf_relax_section
36 PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *));
37 static bfd_byte * mn10300_elf_get_relocated_section_contents
38 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
39 bfd_byte *, bfd_boolean, asymbol **));
40 static unsigned long elf_mn10300_mach
42 void _bfd_mn10300_elf_final_write_processing
43 PARAMS ((bfd *, bfd_boolean));
44 bfd_boolean _bfd_mn10300_elf_object_p
46 bfd_boolean _bfd_mn10300_elf_merge_private_bfd_data
47 PARAMS ((bfd *,bfd *));
49 /* The mn10300 linker needs to keep track of the number of relocs that
50 it decides to copy in check_relocs for each symbol. This is so
51 that it can discard PC relative relocs if it doesn't need them when
52 linking with -Bsymbolic. We store the information in a field
53 extending the regular ELF linker hash table. */
55 /* This structure keeps track of the number of PC relative relocs we
56 have copied for a given symbol. */
58 struct elf_mn10300_pcrel_relocs_copied
61 struct elf_mn10300_pcrel_relocs_copied * next;
62 /* A section in dynobj. */
64 /* Number of relocs copied in this section. */
68 struct elf32_mn10300_link_hash_entry {
69 /* The basic elf link hash table entry. */
70 struct elf_link_hash_entry root;
72 /* For function symbols, the number of times this function is
73 called directly (ie by name). */
74 unsigned int direct_calls;
76 /* For function symbols, the size of this function's stack
77 (if <= 255 bytes). We stuff this into "call" instructions
78 to this target when it's valid and profitable to do so.
80 This does not include stack allocated by movm! */
81 unsigned char stack_size;
83 /* For function symbols, arguments (if any) for movm instruction
84 in the prologue. We stuff this value into "call" instructions
85 to the target when it's valid and profitable to do so. */
86 unsigned char movm_args;
88 /* For function symbols, the amount of stack space that would be allocated
89 by the movm instruction. This is redundant with movm_args, but we
90 add it to the hash table to avoid computing it over and over. */
91 unsigned char movm_stack_size;
93 /* Number of PC relative relocs copied for this symbol. */
94 struct elf_mn10300_pcrel_relocs_copied * pcrel_relocs_copied;
96 /* When set, convert all "call" instructions to this target into "calls"
98 #define MN10300_CONVERT_CALL_TO_CALLS 0x1
100 /* Used to mark functions which have had redundant parts of their
102 #define MN10300_DELETED_PROLOGUE_BYTES 0x2
106 /* We derive a hash table from the main elf linker hash table so
107 we can store state variables and a secondary hash table without
108 resorting to global variables. */
109 struct elf32_mn10300_link_hash_table {
110 /* The main hash table. */
111 struct elf_link_hash_table root;
113 /* A hash table for static functions. We could derive a new hash table
114 instead of using the full elf32_mn10300_link_hash_table if we wanted
115 to save some memory. */
116 struct elf32_mn10300_link_hash_table *static_hash_table;
118 /* Random linker state flags. */
119 #define MN10300_HASH_ENTRIES_INITIALIZED 0x1
123 /* For MN10300 linker hash table. */
125 /* Get the MN10300 ELF linker hash table from a link_info structure. */
127 #define elf32_mn10300_hash_table(p) \
128 ((struct elf32_mn10300_link_hash_table *) ((p)->hash))
130 #define elf32_mn10300_link_hash_traverse(table, func, info) \
131 (elf_link_hash_traverse \
133 (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
136 static struct bfd_hash_entry *elf32_mn10300_link_hash_newfunc
137 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
138 static struct bfd_link_hash_table *elf32_mn10300_link_hash_table_create
140 static void elf32_mn10300_link_hash_table_free
141 PARAMS ((struct bfd_link_hash_table *));
143 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
144 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
145 static void mn10300_info_to_howto
146 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
147 static bfd_boolean mn10300_elf_check_relocs
148 PARAMS ((bfd *, struct bfd_link_info *, asection *,
149 const Elf_Internal_Rela *));
150 static asection *mn10300_elf_gc_mark_hook
151 PARAMS ((asection *, struct bfd_link_info *info, Elf_Internal_Rela *,
152 struct elf_link_hash_entry *, Elf_Internal_Sym *));
153 static bfd_boolean mn10300_elf_relax_delete_bytes
154 PARAMS ((bfd *, asection *, bfd_vma, int));
155 static bfd_boolean mn10300_elf_symbol_address_p
156 PARAMS ((bfd *, asection *, Elf_Internal_Sym *, bfd_vma));
157 static bfd_boolean elf32_mn10300_finish_hash_table_entry
158 PARAMS ((struct bfd_hash_entry *, PTR));
159 static void compute_function_info
160 PARAMS ((bfd *, struct elf32_mn10300_link_hash_entry *,
161 bfd_vma, unsigned char *));
163 static bfd_boolean _bfd_mn10300_elf_create_got_section
164 PARAMS ((bfd *, struct bfd_link_info *));
165 static bfd_boolean _bfd_mn10300_elf_create_dynamic_sections
166 PARAMS ((bfd *, struct bfd_link_info *));
167 static bfd_boolean _bfd_mn10300_elf_adjust_dynamic_symbol
168 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
169 static bfd_boolean _bfd_mn10300_elf_discard_copies
170 PARAMS ((struct elf32_mn10300_link_hash_entry *,
171 struct bfd_link_info *));
172 static bfd_boolean _bfd_mn10300_elf_size_dynamic_sections
173 PARAMS ((bfd *, struct bfd_link_info *));
174 static bfd_boolean _bfd_mn10300_elf_finish_dynamic_symbol
175 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
176 Elf_Internal_Sym *));
177 static bfd_boolean _bfd_mn10300_elf_finish_dynamic_sections
178 PARAMS ((bfd *, struct bfd_link_info *));
180 static reloc_howto_type elf_mn10300_howto_table[] = {
181 /* Dummy relocation. Does nothing. */
182 HOWTO (R_MN10300_NONE,
188 complain_overflow_bitfield,
189 bfd_elf_generic_reloc,
195 /* Standard 32 bit reloc. */
202 complain_overflow_bitfield,
203 bfd_elf_generic_reloc,
209 /* Standard 16 bit reloc. */
216 complain_overflow_bitfield,
217 bfd_elf_generic_reloc,
223 /* Standard 8 bit reloc. */
230 complain_overflow_bitfield,
231 bfd_elf_generic_reloc,
237 /* Standard 32bit pc-relative reloc. */
238 HOWTO (R_MN10300_PCREL32,
244 complain_overflow_bitfield,
245 bfd_elf_generic_reloc,
251 /* Standard 16bit pc-relative reloc. */
252 HOWTO (R_MN10300_PCREL16,
258 complain_overflow_bitfield,
259 bfd_elf_generic_reloc,
265 /* Standard 8 pc-relative reloc. */
266 HOWTO (R_MN10300_PCREL8,
272 complain_overflow_bitfield,
273 bfd_elf_generic_reloc,
280 /* GNU extension to record C++ vtable hierarchy */
281 HOWTO (R_MN10300_GNU_VTINHERIT, /* type */
283 0, /* size (0 = byte, 1 = short, 2 = long) */
285 FALSE, /* pc_relative */
287 complain_overflow_dont, /* complain_on_overflow */
288 NULL, /* special_function */
289 "R_MN10300_GNU_VTINHERIT", /* name */
290 FALSE, /* partial_inplace */
293 FALSE), /* pcrel_offset */
295 /* GNU extension to record C++ vtable member usage */
296 HOWTO (R_MN10300_GNU_VTENTRY, /* type */
298 0, /* size (0 = byte, 1 = short, 2 = long) */
300 FALSE, /* pc_relative */
302 complain_overflow_dont, /* complain_on_overflow */
303 NULL, /* special_function */
304 "R_MN10300_GNU_VTENTRY", /* name */
305 FALSE, /* partial_inplace */
308 FALSE), /* pcrel_offset */
310 /* Standard 24 bit reloc. */
317 complain_overflow_bitfield,
318 bfd_elf_generic_reloc,
324 HOWTO (R_MN10300_GOTPC32, /* type */
326 2, /* size (0 = byte, 1 = short, 2 = long) */
328 TRUE, /* pc_relative */
330 complain_overflow_bitfield, /* complain_on_overflow */
331 bfd_elf_generic_reloc, /* */
332 "R_MN10300_GOTPC32", /* name */
333 FALSE, /* partial_inplace */
334 0xffffffff, /* src_mask */
335 0xffffffff, /* dst_mask */
336 TRUE), /* pcrel_offset */
338 HOWTO (R_MN10300_GOTPC16, /* type */
340 1, /* size (0 = byte, 1 = short, 2 = long) */
342 TRUE, /* pc_relative */
344 complain_overflow_bitfield, /* complain_on_overflow */
345 bfd_elf_generic_reloc, /* */
346 "R_MN10300_GOTPC16", /* name */
347 FALSE, /* partial_inplace */
348 0xffff, /* src_mask */
349 0xffff, /* dst_mask */
350 TRUE), /* pcrel_offset */
352 HOWTO (R_MN10300_GOTOFF32, /* type */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
356 FALSE, /* pc_relative */
358 complain_overflow_bitfield, /* complain_on_overflow */
359 bfd_elf_generic_reloc, /* */
360 "R_MN10300_GOTOFF32", /* name */
361 FALSE, /* partial_inplace */
362 0xffffffff, /* src_mask */
363 0xffffffff, /* dst_mask */
364 FALSE), /* pcrel_offset */
366 HOWTO (R_MN10300_GOTOFF24, /* type */
368 2, /* size (0 = byte, 1 = short, 2 = long) */
370 FALSE, /* pc_relative */
372 complain_overflow_bitfield, /* complain_on_overflow */
373 bfd_elf_generic_reloc, /* */
374 "R_MN10300_GOTOFF24", /* name */
375 FALSE, /* partial_inplace */
376 0xffffff, /* src_mask */
377 0xffffff, /* dst_mask */
378 FALSE), /* pcrel_offset */
380 HOWTO (R_MN10300_GOTOFF16, /* type */
382 1, /* size (0 = byte, 1 = short, 2 = long) */
384 FALSE, /* pc_relative */
386 complain_overflow_bitfield, /* complain_on_overflow */
387 bfd_elf_generic_reloc, /* */
388 "R_MN10300_GOTOFF16", /* name */
389 FALSE, /* partial_inplace */
390 0xffff, /* src_mask */
391 0xffff, /* dst_mask */
392 FALSE), /* pcrel_offset */
394 HOWTO (R_MN10300_PLT32, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 TRUE, /* pc_relative */
400 complain_overflow_bitfield, /* complain_on_overflow */
401 bfd_elf_generic_reloc, /* */
402 "R_MN10300_PLT32", /* name */
403 FALSE, /* partial_inplace */
404 0xffffffff, /* src_mask */
405 0xffffffff, /* dst_mask */
406 TRUE), /* pcrel_offset */
408 HOWTO (R_MN10300_PLT16, /* type */
410 1, /* size (0 = byte, 1 = short, 2 = long) */
412 TRUE, /* pc_relative */
414 complain_overflow_bitfield, /* complain_on_overflow */
415 bfd_elf_generic_reloc, /* */
416 "R_MN10300_PLT16", /* name */
417 FALSE, /* partial_inplace */
418 0xffff, /* src_mask */
419 0xffff, /* dst_mask */
420 TRUE), /* pcrel_offset */
422 HOWTO (R_MN10300_GOT32, /* type */
424 2, /* size (0 = byte, 1 = short, 2 = long) */
426 FALSE, /* pc_relative */
428 complain_overflow_bitfield, /* complain_on_overflow */
429 bfd_elf_generic_reloc, /* */
430 "R_MN10300_GOT32", /* name */
431 FALSE, /* partial_inplace */
432 0xffffffff, /* src_mask */
433 0xffffffff, /* dst_mask */
434 FALSE), /* pcrel_offset */
436 HOWTO (R_MN10300_GOT24, /* type */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
440 FALSE, /* pc_relative */
442 complain_overflow_bitfield, /* complain_on_overflow */
443 bfd_elf_generic_reloc, /* */
444 "R_MN10300_GOT24", /* name */
445 FALSE, /* partial_inplace */
446 0xffffffff, /* src_mask */
447 0xffffffff, /* dst_mask */
448 FALSE), /* pcrel_offset */
450 HOWTO (R_MN10300_GOT16, /* type */
452 1, /* size (0 = byte, 1 = short, 2 = long) */
454 FALSE, /* pc_relative */
456 complain_overflow_bitfield, /* complain_on_overflow */
457 bfd_elf_generic_reloc, /* */
458 "R_MN10300_GOT16", /* name */
459 FALSE, /* partial_inplace */
460 0xffffffff, /* src_mask */
461 0xffffffff, /* dst_mask */
462 FALSE), /* pcrel_offset */
464 HOWTO (R_MN10300_COPY, /* type */
466 2, /* size (0 = byte, 1 = short, 2 = long) */
468 FALSE, /* pc_relative */
470 complain_overflow_bitfield, /* complain_on_overflow */
471 bfd_elf_generic_reloc, /* */
472 "R_MN10300_COPY", /* name */
473 FALSE, /* partial_inplace */
474 0xffffffff, /* src_mask */
475 0xffffffff, /* dst_mask */
476 FALSE), /* pcrel_offset */
478 HOWTO (R_MN10300_GLOB_DAT, /* type */
480 2, /* size (0 = byte, 1 = short, 2 = long) */
482 FALSE, /* pc_relative */
484 complain_overflow_bitfield, /* complain_on_overflow */
485 bfd_elf_generic_reloc, /* */
486 "R_MN10300_GLOB_DAT", /* name */
487 FALSE, /* partial_inplace */
488 0xffffffff, /* src_mask */
489 0xffffffff, /* dst_mask */
490 FALSE), /* pcrel_offset */
492 HOWTO (R_MN10300_JMP_SLOT, /* type */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
496 FALSE, /* pc_relative */
498 complain_overflow_bitfield, /* complain_on_overflow */
499 bfd_elf_generic_reloc, /* */
500 "R_MN10300_JMP_SLOT", /* name */
501 FALSE, /* partial_inplace */
502 0xffffffff, /* src_mask */
503 0xffffffff, /* dst_mask */
504 FALSE), /* pcrel_offset */
506 HOWTO (R_MN10300_RELATIVE, /* type */
508 2, /* size (0 = byte, 1 = short, 2 = long) */
510 FALSE, /* pc_relative */
512 complain_overflow_bitfield, /* complain_on_overflow */
513 bfd_elf_generic_reloc, /* */
514 "R_MN10300_RELATIVE", /* name */
515 FALSE, /* partial_inplace */
516 0xffffffff, /* src_mask */
517 0xffffffff, /* dst_mask */
518 FALSE), /* pcrel_offset */
522 struct mn10300_reloc_map {
523 bfd_reloc_code_real_type bfd_reloc_val;
524 unsigned char elf_reloc_val;
527 static const struct mn10300_reloc_map mn10300_reloc_map[] = {
528 { BFD_RELOC_NONE, R_MN10300_NONE, },
529 { BFD_RELOC_32, R_MN10300_32, },
530 { BFD_RELOC_16, R_MN10300_16, },
531 { BFD_RELOC_8, R_MN10300_8, },
532 { BFD_RELOC_32_PCREL, R_MN10300_PCREL32, },
533 { BFD_RELOC_16_PCREL, R_MN10300_PCREL16, },
534 { BFD_RELOC_8_PCREL, R_MN10300_PCREL8, },
535 { BFD_RELOC_24, R_MN10300_24, },
536 { BFD_RELOC_VTABLE_INHERIT, R_MN10300_GNU_VTINHERIT },
537 { BFD_RELOC_VTABLE_ENTRY, R_MN10300_GNU_VTENTRY },
538 { BFD_RELOC_32_GOT_PCREL, R_MN10300_GOTPC32 },
539 { BFD_RELOC_16_GOT_PCREL, R_MN10300_GOTPC16 },
540 { BFD_RELOC_32_GOTOFF, R_MN10300_GOTOFF32 },
541 { BFD_RELOC_MN10300_GOTOFF24, R_MN10300_GOTOFF24 },
542 { BFD_RELOC_16_GOTOFF, R_MN10300_GOTOFF16 },
543 { BFD_RELOC_32_PLT_PCREL, R_MN10300_PLT32 },
544 { BFD_RELOC_16_PLT_PCREL, R_MN10300_PLT16 },
545 { BFD_RELOC_MN10300_GOT32, R_MN10300_GOT32 },
546 { BFD_RELOC_MN10300_GOT24, R_MN10300_GOT24 },
547 { BFD_RELOC_MN10300_GOT16, R_MN10300_GOT16 },
548 { BFD_RELOC_MN10300_COPY, R_MN10300_COPY },
549 { BFD_RELOC_MN10300_GLOB_DAT, R_MN10300_GLOB_DAT },
550 { BFD_RELOC_MN10300_JMP_SLOT, R_MN10300_JMP_SLOT },
551 { BFD_RELOC_MN10300_RELATIVE, R_MN10300_RELATIVE },
554 /* Create the GOT section. */
557 _bfd_mn10300_elf_create_got_section (abfd, info)
559 struct bfd_link_info * info;
564 struct bfd_link_hash_entry * bh;
565 struct elf_link_hash_entry * h;
566 const struct elf_backend_data * bed = get_elf_backend_data (abfd);
569 /* This function may be called more than once. */
570 if (bfd_get_section_by_name (abfd, ".got") != NULL)
573 switch (bed->s->arch_size)
584 bfd_set_error (bfd_error_bad_value);
588 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
589 | SEC_LINKER_CREATED);
592 pltflags |= SEC_CODE;
593 if (bed->plt_not_loaded)
594 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
595 if (bed->plt_readonly)
596 pltflags |= SEC_READONLY;
598 s = bfd_make_section (abfd, ".plt");
600 || ! bfd_set_section_flags (abfd, s, pltflags)
601 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
604 if (bed->want_plt_sym)
606 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
609 if (! (_bfd_generic_link_add_one_symbol
610 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
611 (bfd_vma) 0, (const char *) NULL, FALSE,
612 get_elf_backend_data (abfd)->collect, &bh)))
614 h = (struct elf_link_hash_entry *) bh;
615 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
616 h->type = STT_OBJECT;
619 && ! bfd_elf_link_record_dynamic_symbol (info, h))
623 s = bfd_make_section (abfd, ".got");
625 || ! bfd_set_section_flags (abfd, s, flags)
626 || ! bfd_set_section_alignment (abfd, s, ptralign))
629 if (bed->want_got_plt)
631 s = bfd_make_section (abfd, ".got.plt");
633 || ! bfd_set_section_flags (abfd, s, flags)
634 || ! bfd_set_section_alignment (abfd, s, ptralign))
638 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
639 (or .got.plt) section. We don't do this in the linker script
640 because we don't want to define the symbol if we are not creating
641 a global offset table. */
643 if (!(_bfd_generic_link_add_one_symbol
644 (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s,
645 bed->got_symbol_offset, (const char *) NULL, FALSE,
648 h = (struct elf_link_hash_entry *) bh;
649 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
650 h->type = STT_OBJECT;
653 && ! bfd_elf_link_record_dynamic_symbol (info, h))
656 elf_hash_table (info)->hgot = h;
658 /* The first bit of the global offset table is the header. */
659 s->_raw_size += bed->got_header_size + bed->got_symbol_offset;
664 static reloc_howto_type *
665 bfd_elf32_bfd_reloc_type_lookup (abfd, code)
666 bfd *abfd ATTRIBUTE_UNUSED;
667 bfd_reloc_code_real_type code;
672 i < sizeof (mn10300_reloc_map) / sizeof (struct mn10300_reloc_map);
675 if (mn10300_reloc_map[i].bfd_reloc_val == code)
676 return &elf_mn10300_howto_table[mn10300_reloc_map[i].elf_reloc_val];
682 /* Set the howto pointer for an MN10300 ELF reloc. */
685 mn10300_info_to_howto (abfd, cache_ptr, dst)
686 bfd *abfd ATTRIBUTE_UNUSED;
688 Elf_Internal_Rela *dst;
692 r_type = ELF32_R_TYPE (dst->r_info);
693 BFD_ASSERT (r_type < (unsigned int) R_MN10300_MAX);
694 cache_ptr->howto = &elf_mn10300_howto_table[r_type];
697 /* Look through the relocs for a section during the first phase.
698 Since we don't do .gots or .plts, we just need to consider the
699 virtual table relocs for gc. */
702 mn10300_elf_check_relocs (abfd, info, sec, relocs)
704 struct bfd_link_info *info;
706 const Elf_Internal_Rela *relocs;
708 Elf_Internal_Shdr *symtab_hdr;
709 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
710 const Elf_Internal_Rela *rel;
711 const Elf_Internal_Rela *rel_end;
713 bfd_vma * local_got_offsets;
722 if (info->relocatable)
725 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
726 sym_hashes = elf_sym_hashes (abfd);
727 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
728 if (!elf_bad_symtab (abfd))
729 sym_hashes_end -= symtab_hdr->sh_info;
731 dynobj = elf_hash_table (info)->dynobj;
732 local_got_offsets = elf_local_got_offsets (abfd);
733 rel_end = relocs + sec->reloc_count;
734 for (rel = relocs; rel < rel_end; rel++)
736 struct elf_link_hash_entry *h;
737 unsigned long r_symndx;
739 r_symndx = ELF32_R_SYM (rel->r_info);
740 if (r_symndx < symtab_hdr->sh_info)
743 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
745 /* Some relocs require a global offset table. */
748 switch (ELF32_R_TYPE (rel->r_info))
750 case R_MN10300_GOT32:
751 case R_MN10300_GOT24:
752 case R_MN10300_GOT16:
753 case R_MN10300_GOTOFF32:
754 case R_MN10300_GOTOFF24:
755 case R_MN10300_GOTOFF16:
756 case R_MN10300_GOTPC32:
757 case R_MN10300_GOTPC16:
758 elf_hash_table (info)->dynobj = dynobj = abfd;
759 if (! _bfd_mn10300_elf_create_got_section (dynobj, info))
768 switch (ELF32_R_TYPE (rel->r_info))
770 /* This relocation describes the C++ object vtable hierarchy.
771 Reconstruct it for later use during GC. */
772 case R_MN10300_GNU_VTINHERIT:
773 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
777 /* This relocation describes which C++ vtable entries are actually
778 used. Record for later use during GC. */
779 case R_MN10300_GNU_VTENTRY:
780 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
783 case R_MN10300_GOT32:
784 case R_MN10300_GOT24:
785 case R_MN10300_GOT16:
786 /* This symbol requires a global offset table entry. */
790 sgot = bfd_get_section_by_name (dynobj, ".got");
791 BFD_ASSERT (sgot != NULL);
795 && (h != NULL || info->shared))
797 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
800 srelgot = bfd_make_section (dynobj, ".rela.got");
802 || ! bfd_set_section_flags (dynobj, srelgot,
809 || ! bfd_set_section_alignment (dynobj, srelgot, 2))
816 if (h->got.offset != (bfd_vma) -1)
817 /* We have already allocated space in the .got. */
820 h->got.offset = sgot->_raw_size;
822 /* Make sure this symbol is output as a dynamic symbol. */
823 if (h->dynindx == -1)
825 if (! bfd_elf_link_record_dynamic_symbol (info, h))
829 srelgot->_raw_size += sizeof (Elf32_External_Rela);
833 /* This is a global offset table entry for a local
835 if (local_got_offsets == NULL)
840 size = symtab_hdr->sh_info * sizeof (bfd_vma);
841 local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size);
843 if (local_got_offsets == NULL)
845 elf_local_got_offsets (abfd) = local_got_offsets;
847 for (i = 0; i < symtab_hdr->sh_info; i++)
848 local_got_offsets[i] = (bfd_vma) -1;
851 if (local_got_offsets[r_symndx] != (bfd_vma) -1)
852 /* We have already allocated space in the .got. */
855 local_got_offsets[r_symndx] = sgot->_raw_size;
858 /* If we are generating a shared object, we need to
859 output a R_MN10300_RELATIVE reloc so that the dynamic
860 linker can adjust this GOT entry. */
861 srelgot->_raw_size += sizeof (Elf32_External_Rela);
864 sgot->_raw_size += 4;
868 case R_MN10300_PLT32:
869 case R_MN10300_PLT16:
870 /* This symbol requires a procedure linkage table entry. We
871 actually build the entry in adjust_dynamic_symbol,
872 because this might be a case of linking PIC code which is
873 never referenced by a dynamic object, in which case we
874 don't need to generate a procedure linkage table entry
877 /* If this is a local symbol, we resolve it directly without
878 creating a procedure linkage table entry. */
882 if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
883 || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN)
886 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
894 case R_MN10300_PCREL32:
895 case R_MN10300_PCREL16:
896 case R_MN10300_PCREL8:
898 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
900 /* If we are creating a shared library, and this is a reloc
901 against a global symbol, or a non PC relative reloc
902 against a local symbol, then we need to copy the reloc
903 into the shared library. However, if we are linking with
904 -Bsymbolic, we do not need to copy a reloc against a
905 global symbol which is defined in an object we are
906 including in the link (i.e., DEF_REGULAR is set). At
907 this point we have not seen all the input files, so it is
908 possible that DEF_REGULAR is not set now but will be set
909 later (it is never cleared). We account for that
910 possibility below by storing information in the
911 pcrel_relocs_copied field of the hash table entry. */
913 && (sec->flags & SEC_ALLOC) != 0
914 && (! (elf_mn10300_howto_table[ELF32_R_TYPE (rel->r_info)]
918 || h->root.type == bfd_link_hash_defweak
919 || (h->elf_link_hash_flags
920 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
922 /* When creating a shared object, we must copy these
923 reloc types into the output file. We create a reloc
924 section in dynobj and make room for this reloc. */
929 name = (bfd_elf_string_from_elf_section
931 elf_elfheader (abfd)->e_shstrndx,
932 elf_section_data (sec)->rel_hdr.sh_name));
936 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
937 && strcmp (bfd_get_section_name (abfd, sec),
940 sreloc = bfd_get_section_by_name (dynobj, name);
945 sreloc = bfd_make_section (dynobj, name);
946 flags = (SEC_HAS_CONTENTS | SEC_READONLY
947 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
948 if ((sec->flags & SEC_ALLOC) != 0)
949 flags |= SEC_ALLOC | SEC_LOAD;
951 || ! bfd_set_section_flags (dynobj, sreloc, flags)
952 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
957 sreloc->_raw_size += sizeof (Elf32_External_Rela);
959 /* If we are linking with -Bsymbolic, and this is a
960 global symbol, we count the number of PC relative
961 relocations we have entered for this symbol, so that
962 we can discard them again if the symbol is later
963 defined by a regular object. Note that this function
964 is only called if we are using an elf_sh linker
965 hash table, which means that h is really a pointer to
966 an elf32_mn10300_link_hash_entry. */
968 && (elf_mn10300_howto_table[ELF32_R_TYPE (rel->r_info)]
971 struct elf32_mn10300_link_hash_entry *eh;
972 struct elf_mn10300_pcrel_relocs_copied *p;
974 eh = (struct elf32_mn10300_link_hash_entry *) h;
976 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
977 if (p->section == sreloc)
982 p = ((struct elf_mn10300_pcrel_relocs_copied *)
983 bfd_alloc (dynobj, sizeof *p));
987 p->next = eh->pcrel_relocs_copied;
988 eh->pcrel_relocs_copied = p;
1004 /* Return the section that should be marked against GC for a given
1008 mn10300_elf_gc_mark_hook (sec, info, rel, h, sym)
1010 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1011 Elf_Internal_Rela *rel;
1012 struct elf_link_hash_entry *h;
1013 Elf_Internal_Sym *sym;
1017 switch (ELF32_R_TYPE (rel->r_info))
1019 case R_MN10300_GNU_VTINHERIT:
1020 case R_MN10300_GNU_VTENTRY:
1024 switch (h->root.type)
1026 case bfd_link_hash_defined:
1027 case bfd_link_hash_defweak:
1028 return h->root.u.def.section;
1030 case bfd_link_hash_common:
1031 return h->root.u.c.p->section;
1039 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
1044 /* Perform a relocation as part of a final link. */
1045 static bfd_reloc_status_type
1046 mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd,
1047 input_section, contents, offset, value,
1048 addend, h, symndx, info, sym_sec, is_local)
1049 reloc_howto_type *howto;
1051 bfd *output_bfd ATTRIBUTE_UNUSED;
1052 asection *input_section;
1057 struct elf_link_hash_entry * h;
1058 unsigned long symndx;
1059 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1060 asection *sym_sec ATTRIBUTE_UNUSED;
1061 int is_local ATTRIBUTE_UNUSED;
1063 unsigned long r_type = howto->type;
1064 bfd_byte *hit_data = contents + offset;
1066 bfd_vma * local_got_offsets;
1071 dynobj = elf_hash_table (info)->dynobj;
1072 local_got_offsets = elf_local_got_offsets (input_bfd);
1080 case R_MN10300_NONE:
1081 return bfd_reloc_ok;
1085 && (input_section->flags & SEC_ALLOC) != 0)
1087 Elf_Internal_Rela outrel;
1088 bfd_boolean skip, relocate;
1090 /* When generating a shared object, these relocations are
1091 copied into the output file to be resolved at run
1097 name = (bfd_elf_string_from_elf_section
1099 elf_elfheader (input_bfd)->e_shstrndx,
1100 elf_section_data (input_section)->rel_hdr.sh_name));
1104 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
1105 && strcmp (bfd_get_section_name (input_bfd,
1109 sreloc = bfd_get_section_by_name (dynobj, name);
1110 BFD_ASSERT (sreloc != NULL);
1115 if (elf_section_data (input_section)->sec_info == NULL
1116 || (input_section->sec_info_type != ELF_INFO_TYPE_STABS))
1117 outrel.r_offset = offset;
1122 off = (_bfd_stab_section_offset
1123 (output_bfd, & elf_hash_table (info)->stab_info,
1125 & elf_section_data (input_section)->sec_info,
1127 if (off == (bfd_vma) -1)
1129 outrel.r_offset = off;
1132 outrel.r_offset += (input_section->output_section->vma
1133 + input_section->output_offset);
1137 memset (&outrel, 0, sizeof outrel);
1142 /* h->dynindx may be -1 if this symbol was marked to
1145 || ((info->symbolic || h->dynindx == -1)
1146 && (h->elf_link_hash_flags
1147 & ELF_LINK_HASH_DEF_REGULAR) != 0))
1150 outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
1151 outrel.r_addend = value + addend;
1155 BFD_ASSERT (h->dynindx != -1);
1157 outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_32);
1158 outrel.r_addend = value + addend;
1162 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
1163 (bfd_byte *) (((Elf32_External_Rela *) sreloc->contents)
1164 + sreloc->reloc_count));
1165 ++sreloc->reloc_count;
1167 /* If this reloc is against an external symbol, we do
1168 not want to fiddle with the addend. Otherwise, we
1169 need to include the symbol value so that it becomes
1170 an addend for the dynamic reloc. */
1172 return bfd_reloc_ok;
1175 bfd_put_32 (input_bfd, value, hit_data);
1176 return bfd_reloc_ok;
1181 if ((long) value > 0x7fffff || (long) value < -0x800000)
1182 return bfd_reloc_overflow;
1184 bfd_put_8 (input_bfd, value & 0xff, hit_data);
1185 bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
1186 bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
1187 return bfd_reloc_ok;
1192 if ((long) value > 0x7fff || (long) value < -0x8000)
1193 return bfd_reloc_overflow;
1195 bfd_put_16 (input_bfd, value, hit_data);
1196 return bfd_reloc_ok;
1201 if ((long) value > 0x7f || (long) value < -0x80)
1202 return bfd_reloc_overflow;
1204 bfd_put_8 (input_bfd, value, hit_data);
1205 return bfd_reloc_ok;
1207 case R_MN10300_PCREL8:
1208 value -= (input_section->output_section->vma
1209 + input_section->output_offset);
1213 if ((long) value > 0xff || (long) value < -0x100)
1214 return bfd_reloc_overflow;
1216 bfd_put_8 (input_bfd, value, hit_data);
1217 return bfd_reloc_ok;
1219 case R_MN10300_PCREL16:
1220 value -= (input_section->output_section->vma
1221 + input_section->output_offset);
1225 if ((long) value > 0xffff || (long) value < -0x10000)
1226 return bfd_reloc_overflow;
1228 bfd_put_16 (input_bfd, value, hit_data);
1229 return bfd_reloc_ok;
1231 case R_MN10300_PCREL32:
1233 && (input_section->flags & SEC_ALLOC) != 0
1236 && (! info->symbolic
1237 || (h->elf_link_hash_flags
1238 & ELF_LINK_HASH_DEF_REGULAR) == 0))
1240 Elf_Internal_Rela outrel;
1243 /* When generating a shared object, these relocations
1244 are copied into the output file to be resolved at run
1251 name = (bfd_elf_string_from_elf_section
1253 elf_elfheader (input_bfd)->e_shstrndx,
1254 elf_section_data (input_section)->rel_hdr.sh_name));
1258 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
1259 && strcmp (bfd_get_section_name (input_bfd,
1263 sreloc = bfd_get_section_by_name (dynobj, name);
1264 BFD_ASSERT (sreloc != NULL);
1269 if (elf_section_data (input_section)->sec_info == NULL
1270 || (input_section->sec_info_type != ELF_INFO_TYPE_STABS))
1271 outrel.r_offset = offset;
1276 off = (_bfd_stab_section_offset
1277 (output_bfd, & elf_hash_table (info)->stab_info,
1279 & elf_section_data (input_section)->sec_info,
1281 if (off == (bfd_vma) -1)
1283 outrel.r_offset = off;
1286 outrel.r_offset += (input_section->output_section->vma
1287 + input_section->output_offset);
1290 memset (&outrel, 0, sizeof outrel);
1293 BFD_ASSERT (h != NULL && h->dynindx != -1);
1294 outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_PCREL32);
1295 outrel.r_addend = addend;
1298 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
1299 (bfd_byte *) (((Elf32_External_Rela *)
1301 + sreloc->reloc_count));
1302 ++sreloc->reloc_count;
1304 return bfd_reloc_ok;
1307 value -= (input_section->output_section->vma
1308 + input_section->output_offset);
1312 bfd_put_32 (input_bfd, value, hit_data);
1313 return bfd_reloc_ok;
1315 case R_MN10300_GNU_VTINHERIT:
1316 case R_MN10300_GNU_VTENTRY:
1317 return bfd_reloc_ok;
1319 case R_MN10300_GOTPC32:
1320 /* Use global offset table as symbol value. */
1322 value = bfd_get_section_by_name (dynobj,
1323 ".got")->output_section->vma;
1324 value -= (input_section->output_section->vma
1325 + input_section->output_offset);
1329 bfd_put_32 (input_bfd, value, hit_data);
1330 return bfd_reloc_ok;
1332 case R_MN10300_GOTPC16:
1333 /* Use global offset table as symbol value. */
1335 value = bfd_get_section_by_name (dynobj,
1336 ".got")->output_section->vma;
1337 value -= (input_section->output_section->vma
1338 + input_section->output_offset);
1342 if ((long) value > 0xffff || (long) value < -0x10000)
1343 return bfd_reloc_overflow;
1345 bfd_put_16 (input_bfd, value, hit_data);
1346 return bfd_reloc_ok;
1348 case R_MN10300_GOTOFF32:
1349 value -= bfd_get_section_by_name (dynobj,
1350 ".got")->output_section->vma;
1353 bfd_put_32 (input_bfd, value, hit_data);
1354 return bfd_reloc_ok;
1356 case R_MN10300_GOTOFF24:
1357 value -= bfd_get_section_by_name (dynobj,
1358 ".got")->output_section->vma;
1361 if ((long) value > 0x7fffff || (long) value < -0x800000)
1362 return bfd_reloc_overflow;
1364 bfd_put_8 (input_bfd, value, hit_data);
1365 bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
1366 bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
1367 return bfd_reloc_ok;
1369 case R_MN10300_GOTOFF16:
1370 value -= bfd_get_section_by_name (dynobj,
1371 ".got")->output_section->vma;
1374 if ((long) value > 0xffff || (long) value < -0x10000)
1375 return bfd_reloc_overflow;
1377 bfd_put_16 (input_bfd, value, hit_data);
1378 return bfd_reloc_ok;
1380 case R_MN10300_PLT32:
1382 && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
1383 && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
1384 && h->plt.offset != (bfd_vma) -1)
1388 splt = bfd_get_section_by_name (dynobj, ".plt");
1390 value = (splt->output_section->vma
1391 + splt->output_offset
1392 + h->plt.offset) - value;
1395 value -= (input_section->output_section->vma
1396 + input_section->output_offset);
1400 bfd_put_32 (input_bfd, value, hit_data);
1401 return bfd_reloc_ok;
1403 case R_MN10300_PLT16:
1405 && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
1406 && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
1407 && h->plt.offset != (bfd_vma) -1)
1411 splt = bfd_get_section_by_name (dynobj, ".plt");
1413 value = (splt->output_section->vma
1414 + splt->output_offset
1415 + h->plt.offset) - value;
1418 value -= (input_section->output_section->vma
1419 + input_section->output_offset);
1423 if ((long) value > 0xffff || (long) value < -0x10000)
1424 return bfd_reloc_overflow;
1426 bfd_put_16 (input_bfd, value, hit_data);
1427 return bfd_reloc_ok;
1429 case R_MN10300_GOT32:
1430 case R_MN10300_GOT24:
1431 case R_MN10300_GOT16:
1435 sgot = bfd_get_section_by_name (dynobj, ".got");
1441 off = h->got.offset;
1442 BFD_ASSERT (off != (bfd_vma) -1);
1444 if (! elf_hash_table (info)->dynamic_sections_created
1446 && (info->symbolic || h->dynindx == -1)
1447 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
1448 /* This is actually a static link, or it is a
1449 -Bsymbolic link and the symbol is defined
1450 locally, or the symbol was forced to be local
1451 because of a version file. We must initialize
1452 this entry in the global offset table.
1454 When doing a dynamic link, we create a .rela.got
1455 relocation entry to initialize the value. This
1456 is done in the finish_dynamic_symbol routine. */
1457 bfd_put_32 (output_bfd, value,
1458 sgot->contents + off);
1460 value = sgot->output_offset + off;
1466 off = elf_local_got_offsets (input_bfd)[symndx];
1468 bfd_put_32 (output_bfd, value, sgot->contents + off);
1473 Elf_Internal_Rela outrel;
1475 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1476 BFD_ASSERT (srelgot != NULL);
1478 outrel.r_offset = (sgot->output_section->vma
1479 + sgot->output_offset
1481 outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
1482 outrel.r_addend = value;
1483 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
1484 (bfd_byte *) (((Elf32_External_Rela *)
1486 + srelgot->reloc_count));
1487 ++ srelgot->reloc_count;
1490 value = sgot->output_offset + off;
1496 if (r_type == R_MN10300_GOT32)
1498 bfd_put_32 (input_bfd, value, hit_data);
1499 return bfd_reloc_ok;
1501 else if (r_type == R_MN10300_GOT24)
1503 if ((long) value > 0x7fffff || (long) value < -0x800000)
1504 return bfd_reloc_overflow;
1506 bfd_put_8 (input_bfd, value & 0xff, hit_data);
1507 bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
1508 bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
1509 return bfd_reloc_ok;
1511 else if (r_type == R_MN10300_GOT16)
1513 if ((long) value > 0xffff || (long) value < -0x10000)
1514 return bfd_reloc_overflow;
1516 bfd_put_16 (input_bfd, value, hit_data);
1517 return bfd_reloc_ok;
1522 return bfd_reloc_notsupported;
1526 /* Relocate an MN10300 ELF section. */
1528 mn10300_elf_relocate_section (output_bfd, info, input_bfd, input_section,
1529 contents, relocs, local_syms, local_sections)
1531 struct bfd_link_info *info;
1533 asection *input_section;
1535 Elf_Internal_Rela *relocs;
1536 Elf_Internal_Sym *local_syms;
1537 asection **local_sections;
1539 Elf_Internal_Shdr *symtab_hdr;
1540 struct elf_link_hash_entry **sym_hashes;
1541 Elf_Internal_Rela *rel, *relend;
1543 if (info->relocatable)
1546 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1547 sym_hashes = elf_sym_hashes (input_bfd);
1550 relend = relocs + input_section->reloc_count;
1551 for (; rel < relend; rel++)
1554 reloc_howto_type *howto;
1555 unsigned long r_symndx;
1556 Elf_Internal_Sym *sym;
1558 struct elf32_mn10300_link_hash_entry *h;
1560 bfd_reloc_status_type r;
1562 r_symndx = ELF32_R_SYM (rel->r_info);
1563 r_type = ELF32_R_TYPE (rel->r_info);
1564 howto = elf_mn10300_howto_table + r_type;
1566 /* Just skip the vtable gc relocs. */
1567 if (r_type == R_MN10300_GNU_VTINHERIT
1568 || r_type == R_MN10300_GNU_VTENTRY)
1574 if (r_symndx < symtab_hdr->sh_info)
1576 sym = local_syms + r_symndx;
1577 sec = local_sections[r_symndx];
1578 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1582 bfd_boolean unresolved_reloc;
1584 struct elf_link_hash_entry *hh;
1586 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1587 r_symndx, symtab_hdr, sym_hashes,
1588 hh, sec, relocation,
1589 unresolved_reloc, warned);
1591 h = (struct elf32_mn10300_link_hash_entry *) hh;
1593 if ((h->root.root.type == bfd_link_hash_defined
1594 || h->root.root.type == bfd_link_hash_defweak)
1595 && ( r_type == R_MN10300_GOTPC32
1596 || r_type == R_MN10300_GOTPC16
1597 || (( r_type == R_MN10300_PLT32
1598 || r_type == R_MN10300_PLT16)
1599 && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
1600 && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
1601 && h->root.plt.offset != (bfd_vma) -1)
1602 || (( r_type == R_MN10300_GOT32
1603 || r_type == R_MN10300_GOT24
1604 || r_type == R_MN10300_GOT16)
1605 && elf_hash_table (info)->dynamic_sections_created
1607 || (! info->symbolic && h->root.dynindx != -1)
1608 || (h->root.elf_link_hash_flags
1609 & ELF_LINK_HASH_DEF_REGULAR) == 0))
1611 && ((! info->symbolic && h->root.dynindx != -1)
1612 || (h->root.elf_link_hash_flags
1613 & ELF_LINK_HASH_DEF_REGULAR) == 0)
1614 && ( r_type == R_MN10300_32
1615 || r_type == R_MN10300_PCREL32)
1616 && ((input_section->flags & SEC_ALLOC) != 0
1617 /* DWARF will emit R_MN10300_32 relocations
1618 in its sections against symbols defined
1619 externally in shared libraries. We can't
1620 do anything with them here. */
1621 || ((input_section->flags & SEC_DEBUGGING) != 0
1622 && (h->root.elf_link_hash_flags
1623 & ELF_LINK_HASH_DEF_DYNAMIC) != 0)))))
1624 /* In these cases, we don't need the relocation
1625 value. We check specially because in some
1626 obscure cases sec->output_section will be NULL. */
1629 else if (unresolved_reloc)
1630 (*_bfd_error_handler)
1631 (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"),
1632 bfd_get_filename (input_bfd), h->root.root.root.string,
1633 bfd_get_section_name (input_bfd, input_section));
1636 r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd,
1638 contents, rel->r_offset,
1639 relocation, rel->r_addend,
1640 (struct elf_link_hash_entry *)h,
1642 info, sec, h == NULL);
1644 if (r != bfd_reloc_ok)
1647 const char *msg = (const char *) 0;
1650 name = h->root.root.root.string;
1653 name = (bfd_elf_string_from_elf_section
1654 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1655 if (name == NULL || *name == '\0')
1656 name = bfd_section_name (input_bfd, sec);
1661 case bfd_reloc_overflow:
1662 if (! ((*info->callbacks->reloc_overflow)
1663 (info, name, howto->name, (bfd_vma) 0,
1664 input_bfd, input_section, rel->r_offset)))
1668 case bfd_reloc_undefined:
1669 if (! ((*info->callbacks->undefined_symbol)
1670 (info, name, input_bfd, input_section,
1671 rel->r_offset, TRUE)))
1675 case bfd_reloc_outofrange:
1676 msg = _("internal error: out of range error");
1679 case bfd_reloc_notsupported:
1680 msg = _("internal error: unsupported relocation error");
1683 case bfd_reloc_dangerous:
1684 msg = _("internal error: dangerous error");
1688 msg = _("internal error: unknown error");
1692 if (!((*info->callbacks->warning)
1693 (info, msg, name, input_bfd, input_section,
1704 /* Finish initializing one hash table entry. */
1706 elf32_mn10300_finish_hash_table_entry (gen_entry, in_args)
1707 struct bfd_hash_entry *gen_entry;
1708 PTR in_args ATTRIBUTE_UNUSED;
1710 struct elf32_mn10300_link_hash_entry *entry;
1711 unsigned int byte_count = 0;
1713 entry = (struct elf32_mn10300_link_hash_entry *) gen_entry;
1715 if (entry->root.root.type == bfd_link_hash_warning)
1716 entry = (struct elf32_mn10300_link_hash_entry *) entry->root.root.u.i.link;
1718 /* If we already know we want to convert "call" to "calls" for calls
1719 to this symbol, then return now. */
1720 if (entry->flags == MN10300_CONVERT_CALL_TO_CALLS)
1723 /* If there are no named calls to this symbol, or there's nothing we
1724 can move from the function itself into the "call" instruction, then
1725 note that all "call" instructions should be converted into "calls"
1726 instructions and return. */
1727 if (entry->direct_calls == 0
1728 || (entry->stack_size == 0 && entry->movm_args == 0))
1730 /* Make a note that we should convert "call" instructions to "calls"
1731 instructions for calls to this symbol. */
1732 entry->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1736 /* We may be able to move some instructions from the function itself into
1737 the "call" instruction. Count how many bytes we might be able to
1738 eliminate in the function itself. */
1740 /* A movm instruction is two bytes. */
1741 if (entry->movm_args)
1744 /* Count the insn to allocate stack space too. */
1745 if (entry->stack_size > 0)
1747 if (entry->stack_size <= 128)
1753 /* If using "call" will result in larger code, then turn all
1754 the associated "call" instructions into "calls" instructions. */
1755 if (byte_count < entry->direct_calls)
1756 entry->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1758 /* This routine never fails. */
1762 /* This function handles relaxing for the mn10300.
1764 There are quite a few relaxing opportunities available on the mn10300:
1766 * calls:32 -> calls:16 2 bytes
1767 * call:32 -> call:16 2 bytes
1769 * call:32 -> calls:32 1 byte
1770 * call:16 -> calls:16 1 byte
1771 * These are done anytime using "calls" would result
1772 in smaller code, or when necessary to preserve the
1773 meaning of the program.
1777 * In some circumstances we can move instructions
1778 from a function prologue into a "call" instruction.
1779 This is only done if the resulting code is no larger
1780 than the original code.
1782 * jmp:32 -> jmp:16 2 bytes
1783 * jmp:16 -> bra:8 1 byte
1785 * If the previous instruction is a conditional branch
1786 around the jump/bra, we may be able to reverse its condition
1787 and change its target to the jump's target. The jump/bra
1788 can then be deleted. 2 bytes
1790 * mov abs32 -> mov abs16 1 or 2 bytes
1792 * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes
1793 - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes
1795 * Most instructions which accept d32 can relax to d16 1 or 2 bytes
1796 - Most instructions which accept d16 can relax to d8 1 or 2 bytes
1798 We don't handle imm16->imm8 or d16->d8 as they're very rare
1799 and somewhat more difficult to support. */
1802 mn10300_elf_relax_section (abfd, sec, link_info, again)
1805 struct bfd_link_info *link_info;
1808 Elf_Internal_Shdr *symtab_hdr;
1809 Elf_Internal_Rela *internal_relocs = NULL;
1810 Elf_Internal_Rela *irel, *irelend;
1811 bfd_byte *contents = NULL;
1812 Elf_Internal_Sym *isymbuf = NULL;
1813 struct elf32_mn10300_link_hash_table *hash_table;
1814 asection *section = sec;
1816 /* Assume nothing changes. */
1819 /* We need a pointer to the mn10300 specific hash table. */
1820 hash_table = elf32_mn10300_hash_table (link_info);
1822 /* Initialize fields in each hash table entry the first time through. */
1823 if ((hash_table->flags & MN10300_HASH_ENTRIES_INITIALIZED) == 0)
1827 /* Iterate over all the input bfds. */
1828 for (input_bfd = link_info->input_bfds;
1830 input_bfd = input_bfd->link_next)
1832 /* We're going to need all the symbols for each bfd. */
1833 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1834 if (symtab_hdr->sh_info != 0)
1836 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1837 if (isymbuf == NULL)
1838 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
1839 symtab_hdr->sh_info, 0,
1841 if (isymbuf == NULL)
1845 /* Iterate over each section in this bfd. */
1846 for (section = input_bfd->sections;
1848 section = section->next)
1850 struct elf32_mn10300_link_hash_entry *hash;
1851 Elf_Internal_Sym *sym;
1852 asection *sym_sec = NULL;
1853 const char *sym_name;
1856 /* If there's nothing to do in this section, skip it. */
1857 if (! (((section->flags & SEC_RELOC) != 0
1858 && section->reloc_count != 0)
1859 || (section->flags & SEC_CODE) != 0))
1862 /* Get cached copy of section contents if it exists. */
1863 if (elf_section_data (section)->this_hdr.contents != NULL)
1864 contents = elf_section_data (section)->this_hdr.contents;
1865 else if (section->_raw_size != 0)
1867 /* Go get them off disk. */
1868 contents = (bfd_byte *) bfd_malloc (section->_raw_size);
1869 if (contents == NULL)
1872 if (!bfd_get_section_contents (input_bfd, section,
1873 contents, (file_ptr) 0,
1874 section->_raw_size))
1880 /* If there aren't any relocs, then there's nothing to do. */
1881 if ((section->flags & SEC_RELOC) != 0
1882 && section->reloc_count != 0)
1885 /* Get a copy of the native relocations. */
1886 internal_relocs = (_bfd_elf_link_read_relocs
1887 (input_bfd, section, (PTR) NULL,
1888 (Elf_Internal_Rela *) NULL,
1889 link_info->keep_memory));
1890 if (internal_relocs == NULL)
1893 /* Now examine each relocation. */
1894 irel = internal_relocs;
1895 irelend = irel + section->reloc_count;
1896 for (; irel < irelend; irel++)
1899 unsigned long r_index;
1902 r_type = ELF32_R_TYPE (irel->r_info);
1903 r_index = ELF32_R_SYM (irel->r_info);
1905 if (r_type < 0 || r_type >= (int) R_MN10300_MAX)
1908 /* We need the name and hash table entry of the target
1914 if (r_index < symtab_hdr->sh_info)
1916 /* A local symbol. */
1917 Elf_Internal_Sym *isym;
1918 struct elf_link_hash_table *elftab;
1921 isym = isymbuf + r_index;
1922 if (isym->st_shndx == SHN_UNDEF)
1923 sym_sec = bfd_und_section_ptr;
1924 else if (isym->st_shndx == SHN_ABS)
1925 sym_sec = bfd_abs_section_ptr;
1926 else if (isym->st_shndx == SHN_COMMON)
1927 sym_sec = bfd_com_section_ptr;
1930 = bfd_section_from_elf_index (input_bfd,
1934 = bfd_elf_string_from_elf_section (input_bfd,
1939 /* If it isn't a function, then we don't care
1941 if (ELF_ST_TYPE (isym->st_info) != STT_FUNC)
1944 /* Tack on an ID so we can uniquely identify this
1945 local symbol in the global hash table. */
1946 amt = strlen (sym_name) + 10;
1947 new_name = bfd_malloc (amt);
1951 sprintf (new_name, "%s_%08x",
1952 sym_name, (int) sym_sec);
1953 sym_name = new_name;
1955 elftab = &hash_table->static_hash_table->root;
1956 hash = ((struct elf32_mn10300_link_hash_entry *)
1957 elf_link_hash_lookup (elftab, sym_name,
1958 TRUE, TRUE, FALSE));
1963 r_index -= symtab_hdr->sh_info;
1964 hash = (struct elf32_mn10300_link_hash_entry *)
1965 elf_sym_hashes (input_bfd)[r_index];
1968 /* If this is not a "call" instruction, then we
1969 should convert "call" instructions to "calls"
1971 code = bfd_get_8 (input_bfd,
1972 contents + irel->r_offset - 1);
1973 if (code != 0xdd && code != 0xcd)
1974 hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1976 /* If this is a jump/call, then bump the
1977 direct_calls counter. Else force "call" to
1978 "calls" conversions. */
1979 if (r_type == R_MN10300_PCREL32
1980 || r_type == R_MN10300_PLT32
1981 || r_type == R_MN10300_PLT16
1982 || r_type == R_MN10300_PCREL16)
1983 hash->direct_calls++;
1985 hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1989 /* Now look at the actual contents to get the stack size,
1990 and a list of what registers were saved in the prologue
1992 if ((section->flags & SEC_CODE) != 0)
1994 Elf_Internal_Sym *isym, *isymend;
1995 unsigned int sec_shndx;
1996 struct elf_link_hash_entry **hashes;
1997 struct elf_link_hash_entry **end_hashes;
1998 unsigned int symcount;
2000 sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
2003 /* Look at each function defined in this section and
2004 update info for that function. */
2005 isymend = isymbuf + symtab_hdr->sh_info;
2006 for (isym = isymbuf; isym < isymend; isym++)
2008 if (isym->st_shndx == sec_shndx
2009 && ELF_ST_TYPE (isym->st_info) == STT_FUNC)
2011 struct elf_link_hash_table *elftab;
2014 if (isym->st_shndx == SHN_UNDEF)
2015 sym_sec = bfd_und_section_ptr;
2016 else if (isym->st_shndx == SHN_ABS)
2017 sym_sec = bfd_abs_section_ptr;
2018 else if (isym->st_shndx == SHN_COMMON)
2019 sym_sec = bfd_com_section_ptr;
2022 = bfd_section_from_elf_index (input_bfd,
2025 sym_name = (bfd_elf_string_from_elf_section
2026 (input_bfd, symtab_hdr->sh_link,
2029 /* Tack on an ID so we can uniquely identify this
2030 local symbol in the global hash table. */
2031 amt = strlen (sym_name) + 10;
2032 new_name = bfd_malloc (amt);
2036 sprintf (new_name, "%s_%08x",
2037 sym_name, (int) sym_sec);
2038 sym_name = new_name;
2040 elftab = &hash_table->static_hash_table->root;
2041 hash = ((struct elf32_mn10300_link_hash_entry *)
2042 elf_link_hash_lookup (elftab, sym_name,
2043 TRUE, TRUE, FALSE));
2045 compute_function_info (input_bfd, hash,
2046 isym->st_value, contents);
2050 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2051 - symtab_hdr->sh_info);
2052 hashes = elf_sym_hashes (input_bfd);
2053 end_hashes = hashes + symcount;
2054 for (; hashes < end_hashes; hashes++)
2056 hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
2057 if ((hash->root.root.type == bfd_link_hash_defined
2058 || hash->root.root.type == bfd_link_hash_defweak)
2059 && hash->root.root.u.def.section == section
2060 && hash->root.type == STT_FUNC)
2061 compute_function_info (input_bfd, hash,
2062 (hash)->root.root.u.def.value,
2067 /* Cache or free any memory we allocated for the relocs. */
2068 if (internal_relocs != NULL
2069 && elf_section_data (section)->relocs != internal_relocs)
2070 free (internal_relocs);
2071 internal_relocs = NULL;
2073 /* Cache or free any memory we allocated for the contents. */
2074 if (contents != NULL
2075 && elf_section_data (section)->this_hdr.contents != contents)
2077 if (! link_info->keep_memory)
2081 /* Cache the section contents for elf_link_input_bfd. */
2082 elf_section_data (section)->this_hdr.contents = contents;
2088 /* Cache or free any memory we allocated for the symbols. */
2090 && symtab_hdr->contents != (unsigned char *) isymbuf)
2092 if (! link_info->keep_memory)
2096 /* Cache the symbols for elf_link_input_bfd. */
2097 symtab_hdr->contents = (unsigned char *) isymbuf;
2103 /* Now iterate on each symbol in the hash table and perform
2104 the final initialization steps on each. */
2105 elf32_mn10300_link_hash_traverse (hash_table,
2106 elf32_mn10300_finish_hash_table_entry,
2108 elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
2109 elf32_mn10300_finish_hash_table_entry,
2112 /* All entries in the hash table are fully initialized. */
2113 hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED;
2115 /* Now that everything has been initialized, go through each
2116 code section and delete any prologue insns which will be
2117 redundant because their operations will be performed by
2118 a "call" instruction. */
2119 for (input_bfd = link_info->input_bfds;
2121 input_bfd = input_bfd->link_next)
2123 /* We're going to need all the local symbols for each bfd. */
2124 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2125 if (symtab_hdr->sh_info != 0)
2127 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2128 if (isymbuf == NULL)
2129 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2130 symtab_hdr->sh_info, 0,
2132 if (isymbuf == NULL)
2136 /* Walk over each section in this bfd. */
2137 for (section = input_bfd->sections;
2139 section = section->next)
2141 unsigned int sec_shndx;
2142 Elf_Internal_Sym *isym, *isymend;
2143 struct elf_link_hash_entry **hashes;
2144 struct elf_link_hash_entry **end_hashes;
2145 unsigned int symcount;
2147 /* Skip non-code sections and empty sections. */
2148 if ((section->flags & SEC_CODE) == 0 || section->_raw_size == 0)
2151 if (section->reloc_count != 0)
2153 /* Get a copy of the native relocations. */
2154 internal_relocs = (_bfd_elf_link_read_relocs
2155 (input_bfd, section, (PTR) NULL,
2156 (Elf_Internal_Rela *) NULL,
2157 link_info->keep_memory));
2158 if (internal_relocs == NULL)
2162 /* Get cached copy of section contents if it exists. */
2163 if (elf_section_data (section)->this_hdr.contents != NULL)
2164 contents = elf_section_data (section)->this_hdr.contents;
2167 /* Go get them off disk. */
2168 contents = (bfd_byte *) bfd_malloc (section->_raw_size);
2169 if (contents == NULL)
2172 if (!bfd_get_section_contents (input_bfd, section,
2173 contents, (file_ptr) 0,
2174 section->_raw_size))
2178 sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
2181 /* Now look for any function in this section which needs
2182 insns deleted from its prologue. */
2183 isymend = isymbuf + symtab_hdr->sh_info;
2184 for (isym = isymbuf; isym < isymend; isym++)
2186 struct elf32_mn10300_link_hash_entry *sym_hash;
2187 asection *sym_sec = NULL;
2188 const char *sym_name;
2190 struct elf_link_hash_table *elftab;
2193 if (isym->st_shndx != sec_shndx)
2196 if (isym->st_shndx == SHN_UNDEF)
2197 sym_sec = bfd_und_section_ptr;
2198 else if (isym->st_shndx == SHN_ABS)
2199 sym_sec = bfd_abs_section_ptr;
2200 else if (isym->st_shndx == SHN_COMMON)
2201 sym_sec = bfd_com_section_ptr;
2204 = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
2207 = bfd_elf_string_from_elf_section (input_bfd,
2208 symtab_hdr->sh_link,
2211 /* Tack on an ID so we can uniquely identify this
2212 local symbol in the global hash table. */
2213 amt = strlen (sym_name) + 10;
2214 new_name = bfd_malloc (amt);
2217 sprintf (new_name, "%s_%08x", sym_name, (int) sym_sec);
2218 sym_name = new_name;
2220 elftab = &hash_table->static_hash_table->root;
2221 sym_hash = ((struct elf32_mn10300_link_hash_entry *)
2222 elf_link_hash_lookup (elftab, sym_name,
2223 FALSE, FALSE, FALSE));
2226 if (sym_hash == NULL)
2229 if (! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
2230 && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
2234 /* Note that we've changed things. */
2235 elf_section_data (section)->relocs = internal_relocs;
2236 elf_section_data (section)->this_hdr.contents = contents;
2237 symtab_hdr->contents = (unsigned char *) isymbuf;
2239 /* Count how many bytes we're going to delete. */
2240 if (sym_hash->movm_args)
2243 if (sym_hash->stack_size > 0)
2245 if (sym_hash->stack_size <= 128)
2251 /* Note that we've deleted prologue bytes for this
2253 sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
2255 /* Actually delete the bytes. */
2256 if (!mn10300_elf_relax_delete_bytes (input_bfd,
2262 /* Something changed. Not strictly necessary, but
2263 may lead to more relaxing opportunities. */
2268 /* Look for any global functions in this section which
2269 need insns deleted from their prologues. */
2270 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2271 - symtab_hdr->sh_info);
2272 hashes = elf_sym_hashes (input_bfd);
2273 end_hashes = hashes + symcount;
2274 for (; hashes < end_hashes; hashes++)
2276 struct elf32_mn10300_link_hash_entry *sym_hash;
2278 sym_hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
2279 if ((sym_hash->root.root.type == bfd_link_hash_defined
2280 || sym_hash->root.root.type == bfd_link_hash_defweak)
2281 && sym_hash->root.root.u.def.section == section
2282 && ! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
2283 && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
2288 /* Note that we've changed things. */
2289 elf_section_data (section)->relocs = internal_relocs;
2290 elf_section_data (section)->this_hdr.contents = contents;
2291 symtab_hdr->contents = (unsigned char *) isymbuf;
2293 /* Count how many bytes we're going to delete. */
2294 if (sym_hash->movm_args)
2297 if (sym_hash->stack_size > 0)
2299 if (sym_hash->stack_size <= 128)
2305 /* Note that we've deleted prologue bytes for this
2307 sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
2309 /* Actually delete the bytes. */
2310 symval = sym_hash->root.root.u.def.value;
2311 if (!mn10300_elf_relax_delete_bytes (input_bfd,
2317 /* Something changed. Not strictly necessary, but
2318 may lead to more relaxing opportunities. */
2323 /* Cache or free any memory we allocated for the relocs. */
2324 if (internal_relocs != NULL
2325 && elf_section_data (section)->relocs != internal_relocs)
2326 free (internal_relocs);
2327 internal_relocs = NULL;
2329 /* Cache or free any memory we allocated for the contents. */
2330 if (contents != NULL
2331 && elf_section_data (section)->this_hdr.contents != contents)
2333 if (! link_info->keep_memory)
2337 /* Cache the section contents for elf_link_input_bfd. */
2338 elf_section_data (section)->this_hdr.contents = contents;
2344 /* Cache or free any memory we allocated for the symbols. */
2346 && symtab_hdr->contents != (unsigned char *) isymbuf)
2348 if (! link_info->keep_memory)
2352 /* Cache the symbols for elf_link_input_bfd. */
2353 symtab_hdr->contents = (unsigned char *) isymbuf;
2360 /* (Re)initialize for the basic instruction shortening/relaxing pass. */
2362 internal_relocs = NULL;
2364 /* For error_return. */
2367 /* We don't have to do anything for a relocatable link, if
2368 this section does not have relocs, or if this is not a
2370 if (link_info->relocatable
2371 || (sec->flags & SEC_RELOC) == 0
2372 || sec->reloc_count == 0
2373 || (sec->flags & SEC_CODE) == 0)
2376 /* If this is the first time we have been called for this section,
2377 initialize the cooked size. */
2378 if (sec->_cooked_size == 0)
2379 sec->_cooked_size = sec->_raw_size;
2381 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2383 /* Get a copy of the native relocations. */
2384 internal_relocs = (_bfd_elf_link_read_relocs
2385 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
2386 link_info->keep_memory));
2387 if (internal_relocs == NULL)
2390 /* Walk through them looking for relaxing opportunities. */
2391 irelend = internal_relocs + sec->reloc_count;
2392 for (irel = internal_relocs; irel < irelend; irel++)
2395 struct elf32_mn10300_link_hash_entry *h = NULL;
2397 /* If this isn't something that can be relaxed, then ignore
2399 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_NONE
2400 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8
2401 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_MAX)
2404 /* Get the section contents if we haven't done so already. */
2405 if (contents == NULL)
2407 /* Get cached copy if it exists. */
2408 if (elf_section_data (sec)->this_hdr.contents != NULL)
2409 contents = elf_section_data (sec)->this_hdr.contents;
2412 /* Go get them off disk. */
2413 contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
2414 if (contents == NULL)
2417 if (! bfd_get_section_contents (abfd, sec, contents,
2418 (file_ptr) 0, sec->_raw_size))
2423 /* Read this BFD's symbols if we haven't done so already. */
2424 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
2426 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2427 if (isymbuf == NULL)
2428 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
2429 symtab_hdr->sh_info, 0,
2431 if (isymbuf == NULL)
2435 /* Get the value of the symbol referred to by the reloc. */
2436 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
2438 Elf_Internal_Sym *isym;
2439 asection *sym_sec = NULL;
2440 const char *sym_name;
2443 /* A local symbol. */
2444 isym = isymbuf + ELF32_R_SYM (irel->r_info);
2445 if (isym->st_shndx == SHN_UNDEF)
2446 sym_sec = bfd_und_section_ptr;
2447 else if (isym->st_shndx == SHN_ABS)
2448 sym_sec = bfd_abs_section_ptr;
2449 else if (isym->st_shndx == SHN_COMMON)
2450 sym_sec = bfd_com_section_ptr;
2452 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2454 symval = (isym->st_value
2455 + sym_sec->output_section->vma
2456 + sym_sec->output_offset);
2457 sym_name = bfd_elf_string_from_elf_section (abfd,
2458 symtab_hdr->sh_link,
2461 /* Tack on an ID so we can uniquely identify this
2462 local symbol in the global hash table. */
2463 new_name = bfd_malloc ((bfd_size_type) strlen (sym_name) + 10);
2466 sprintf (new_name, "%s_%08x", sym_name, (int) sym_sec);
2467 sym_name = new_name;
2469 h = (struct elf32_mn10300_link_hash_entry *)
2470 elf_link_hash_lookup (&hash_table->static_hash_table->root,
2471 sym_name, FALSE, FALSE, FALSE);
2478 /* An external symbol. */
2479 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2480 h = (struct elf32_mn10300_link_hash_entry *)
2481 (elf_sym_hashes (abfd)[indx]);
2482 BFD_ASSERT (h != NULL);
2483 if (h->root.root.type != bfd_link_hash_defined
2484 && h->root.root.type != bfd_link_hash_defweak)
2486 /* This appears to be a reference to an undefined
2487 symbol. Just ignore it--it will be caught by the
2488 regular reloc processing. */
2492 symval = (h->root.root.u.def.value
2493 + h->root.root.u.def.section->output_section->vma
2494 + h->root.root.u.def.section->output_offset);
2497 /* For simplicity of coding, we are going to modify the section
2498 contents, the section relocs, and the BFD symbol table. We
2499 must tell the rest of the code not to free up this
2500 information. It would be possible to instead create a table
2501 of changes which have to be made, as is done in coff-mips.c;
2502 that would be more work, but would require less memory when
2503 the linker is run. */
2505 /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative
2506 branch/call, also deal with "call" -> "calls" conversions and
2507 insertion of prologue data into "call" instructions. */
2508 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32
2509 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32)
2511 bfd_vma value = symval;
2513 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32
2515 && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
2516 && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
2517 && h->root.plt.offset != (bfd_vma) -1)
2521 splt = bfd_get_section_by_name (elf_hash_table (link_info)
2524 value = ((splt->output_section->vma
2525 + splt->output_offset
2526 + h->root.plt.offset)
2527 - (sec->output_section->vma
2528 + sec->output_offset
2532 /* If we've got a "call" instruction that needs to be turned
2533 into a "calls" instruction, do so now. It saves a byte. */
2534 if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
2538 /* Get the opcode. */
2539 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2541 /* Make sure we're working with a "call" instruction! */
2544 /* Note that we've changed the relocs, section contents,
2546 elf_section_data (sec)->relocs = internal_relocs;
2547 elf_section_data (sec)->this_hdr.contents = contents;
2548 symtab_hdr->contents = (unsigned char *) isymbuf;
2550 /* Fix the opcode. */
2551 bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1);
2552 bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
2554 /* Fix irel->r_offset and irel->r_addend. */
2555 irel->r_offset += 1;
2556 irel->r_addend += 1;
2558 /* Delete one byte of data. */
2559 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2560 irel->r_offset + 3, 1))
2563 /* That will change things, so, we should relax again.
2564 Note that this is not required, and it may be slow. */
2570 /* We've got a "call" instruction which needs some data
2571 from target function filled in. */
2574 /* Get the opcode. */
2575 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2577 /* Insert data from the target function into the "call"
2578 instruction if needed. */
2581 bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 4);
2582 bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
2583 contents + irel->r_offset + 5);
2587 /* Deal with pc-relative gunk. */
2588 value -= (sec->output_section->vma + sec->output_offset);
2589 value -= irel->r_offset;
2590 value += irel->r_addend;
2592 /* See if the value will fit in 16 bits, note the high value is
2593 0x7fff + 2 as the target will be two bytes closer if we are
2595 if ((long) value < 0x8001 && (long) value > -0x8000)
2599 /* Get the opcode. */
2600 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2602 if (code != 0xdc && code != 0xdd && code != 0xff)
2605 /* Note that we've changed the relocs, section contents, etc. */
2606 elf_section_data (sec)->relocs = internal_relocs;
2607 elf_section_data (sec)->this_hdr.contents = contents;
2608 symtab_hdr->contents = (unsigned char *) isymbuf;
2610 /* Fix the opcode. */
2612 bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1);
2613 else if (code == 0xdd)
2614 bfd_put_8 (abfd, 0xcd, contents + irel->r_offset - 1);
2615 else if (code == 0xff)
2616 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
2618 /* Fix the relocation's type. */
2619 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2620 (ELF32_R_TYPE (irel->r_info)
2621 == (int) R_MN10300_PLT32)
2625 /* Delete two bytes of data. */
2626 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2627 irel->r_offset + 1, 2))
2630 /* That will change things, so, we should relax again.
2631 Note that this is not required, and it may be slow. */
2636 /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative
2638 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL16)
2640 bfd_vma value = symval;
2642 /* If we've got a "call" instruction that needs to be turned
2643 into a "calls" instruction, do so now. It saves a byte. */
2644 if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
2648 /* Get the opcode. */
2649 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2651 /* Make sure we're working with a "call" instruction! */
2654 /* Note that we've changed the relocs, section contents,
2656 elf_section_data (sec)->relocs = internal_relocs;
2657 elf_section_data (sec)->this_hdr.contents = contents;
2658 symtab_hdr->contents = (unsigned char *) isymbuf;
2660 /* Fix the opcode. */
2661 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1);
2662 bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
2664 /* Fix irel->r_offset and irel->r_addend. */
2665 irel->r_offset += 1;
2666 irel->r_addend += 1;
2668 /* Delete one byte of data. */
2669 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2670 irel->r_offset + 1, 1))
2673 /* That will change things, so, we should relax again.
2674 Note that this is not required, and it may be slow. */
2682 /* Get the opcode. */
2683 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2685 /* Insert data from the target function into the "call"
2686 instruction if needed. */
2689 bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 2);
2690 bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
2691 contents + irel->r_offset + 3);
2695 /* Deal with pc-relative gunk. */
2696 value -= (sec->output_section->vma + sec->output_offset);
2697 value -= irel->r_offset;
2698 value += irel->r_addend;
2700 /* See if the value will fit in 8 bits, note the high value is
2701 0x7f + 1 as the target will be one bytes closer if we are
2703 if ((long) value < 0x80 && (long) value > -0x80)
2707 /* Get the opcode. */
2708 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2713 /* Note that we've changed the relocs, section contents, etc. */
2714 elf_section_data (sec)->relocs = internal_relocs;
2715 elf_section_data (sec)->this_hdr.contents = contents;
2716 symtab_hdr->contents = (unsigned char *) isymbuf;
2718 /* Fix the opcode. */
2719 bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1);
2721 /* Fix the relocation's type. */
2722 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2725 /* Delete one byte of data. */
2726 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2727 irel->r_offset + 1, 1))
2730 /* That will change things, so, we should relax again.
2731 Note that this is not required, and it may be slow. */
2736 /* Try to eliminate an unconditional 8 bit pc-relative branch
2737 which immediately follows a conditional 8 bit pc-relative
2738 branch around the unconditional branch.
2745 This happens when the bCC can't reach lab2 at assembly time,
2746 but due to other relaxations it can reach at link time. */
2747 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8)
2749 Elf_Internal_Rela *nrel;
2750 bfd_vma value = symval;
2753 /* Deal with pc-relative gunk. */
2754 value -= (sec->output_section->vma + sec->output_offset);
2755 value -= irel->r_offset;
2756 value += irel->r_addend;
2758 /* Do nothing if this reloc is the last byte in the section. */
2759 if (irel->r_offset == sec->_cooked_size)
2762 /* See if the next instruction is an unconditional pc-relative
2763 branch, more often than not this test will fail, so we
2764 test it first to speed things up. */
2765 code = bfd_get_8 (abfd, contents + irel->r_offset + 1);
2769 /* Also make sure the next relocation applies to the next
2770 instruction and that it's a pc-relative 8 bit branch. */
2773 || irel->r_offset + 2 != nrel->r_offset
2774 || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10300_PCREL8)
2777 /* Make sure our destination immediately follows the
2778 unconditional branch. */
2779 if (symval != (sec->output_section->vma + sec->output_offset
2780 + irel->r_offset + 3))
2783 /* Now make sure we are a conditional branch. This may not
2784 be necessary, but why take the chance.
2786 Note these checks assume that R_MN10300_PCREL8 relocs
2787 only occur on bCC and bCCx insns. If they occured
2788 elsewhere, we'd need to know the start of this insn
2789 for this check to be accurate. */
2790 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2791 if (code != 0xc0 && code != 0xc1 && code != 0xc2
2792 && code != 0xc3 && code != 0xc4 && code != 0xc5
2793 && code != 0xc6 && code != 0xc7 && code != 0xc8
2794 && code != 0xc9 && code != 0xe8 && code != 0xe9
2795 && code != 0xea && code != 0xeb)
2798 /* We also have to be sure there is no symbol/label
2799 at the unconditional branch. */
2800 if (mn10300_elf_symbol_address_p (abfd, sec, isymbuf,
2801 irel->r_offset + 1))
2804 /* Note that we've changed the relocs, section contents, etc. */
2805 elf_section_data (sec)->relocs = internal_relocs;
2806 elf_section_data (sec)->this_hdr.contents = contents;
2807 symtab_hdr->contents = (unsigned char *) isymbuf;
2809 /* Reverse the condition of the first branch. */
2855 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
2857 /* Set the reloc type and symbol for the first branch
2858 from the second branch. */
2859 irel->r_info = nrel->r_info;
2861 /* Make the reloc for the second branch a null reloc. */
2862 nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info),
2865 /* Delete two bytes of data. */
2866 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2867 irel->r_offset + 1, 2))
2870 /* That will change things, so, we should relax again.
2871 Note that this is not required, and it may be slow. */
2875 /* Try to turn a 24 immediate, displacement or absolute address
2876 into a 8 immediate, displacement or absolute address. */
2877 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_24)
2879 bfd_vma value = symval;
2880 value += irel->r_addend;
2882 /* See if the value will fit in 8 bits. */
2883 if ((long) value < 0x7f && (long) value > -0x80)
2887 /* AM33 insns which have 24 operands are 6 bytes long and
2888 will have 0xfd as the first byte. */
2890 /* Get the first opcode. */
2891 code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
2895 /* Get the second opcode. */
2896 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
2898 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
2899 equivalent instructions exists. */
2900 if (code != 0x6b && code != 0x7b
2901 && code != 0x8b && code != 0x9b
2902 && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
2903 || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
2904 || (code & 0x0f) == 0x0e))
2906 /* Not safe if the high bit is on as relaxing may
2907 move the value out of high mem and thus not fit
2908 in a signed 8bit value. This is currently over
2910 if ((value & 0x80) == 0)
2912 /* Note that we've changed the relocation contents,
2914 elf_section_data (sec)->relocs = internal_relocs;
2915 elf_section_data (sec)->this_hdr.contents = contents;
2916 symtab_hdr->contents = (unsigned char *) isymbuf;
2918 /* Fix the opcode. */
2919 bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3);
2920 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
2922 /* Fix the relocation's type. */
2924 ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2927 /* Delete two bytes of data. */
2928 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2929 irel->r_offset + 1, 2))
2932 /* That will change things, so, we should relax
2933 again. Note that this is not required, and it
2943 /* Try to turn a 32bit immediate, displacement or absolute address
2944 into a 16bit immediate, displacement or absolute address. */
2945 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32
2946 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32
2947 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32
2948 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32)
2950 bfd_vma value = symval;
2952 if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32)
2956 sgot = bfd_get_section_by_name (elf_hash_table (link_info)
2959 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32)
2961 value = sgot->output_offset;
2964 value += h->root.got.offset;
2966 value += (elf_local_got_offsets
2967 (abfd)[ELF32_R_SYM (irel->r_info)]);
2969 else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32)
2970 value -= sgot->output_section->vma;
2971 else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32)
2972 value = (sgot->output_section->vma
2973 - (sec->output_section->vma
2974 + sec->output_offset
2980 value += irel->r_addend;
2982 /* See if the value will fit in 24 bits.
2983 We allow any 16bit match here. We prune those we can't
2985 if ((long) value < 0x7fffff && (long) value > -0x800000)
2989 /* AM33 insns which have 32bit operands are 7 bytes long and
2990 will have 0xfe as the first byte. */
2992 /* Get the first opcode. */
2993 code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
2997 /* Get the second opcode. */
2998 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
3000 /* All the am33 32 -> 24 relaxing possibilities. */
3001 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
3002 equivalent instructions exists. */
3003 if (code != 0x6b && code != 0x7b
3004 && code != 0x8b && code != 0x9b
3005 && (ELF32_R_TYPE (irel->r_info)
3006 != (int) R_MN10300_GOTPC32)
3007 && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
3008 || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
3009 || (code & 0x0f) == 0x0e))
3011 /* Not safe if the high bit is on as relaxing may
3012 move the value out of high mem and thus not fit
3013 in a signed 16bit value. This is currently over
3015 if ((value & 0x8000) == 0)
3017 /* Note that we've changed the relocation contents,
3019 elf_section_data (sec)->relocs = internal_relocs;
3020 elf_section_data (sec)->this_hdr.contents = contents;
3021 symtab_hdr->contents = (unsigned char *) isymbuf;
3023 /* Fix the opcode. */
3024 bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3);
3025 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3027 /* Fix the relocation's type. */
3029 ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3030 (ELF32_R_TYPE (irel->r_info)
3031 == (int) R_MN10300_GOTOFF32)
3032 ? R_MN10300_GOTOFF24
3033 : (ELF32_R_TYPE (irel->r_info)
3034 == (int) R_MN10300_GOT32)
3038 /* Delete one byte of data. */
3039 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3040 irel->r_offset + 3, 1))
3043 /* That will change things, so, we should relax
3044 again. Note that this is not required, and it
3053 /* See if the value will fit in 16 bits.
3054 We allow any 16bit match here. We prune those we can't
3056 if ((long) value < 0x7fff && (long) value > -0x8000)
3060 /* Most insns which have 32bit operands are 6 bytes long;
3061 exceptions are pcrel insns and bit insns.
3063 We handle pcrel insns above. We don't bother trying
3064 to handle the bit insns here.
3066 The first byte of the remaining insns will be 0xfc. */
3068 /* Get the first opcode. */
3069 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
3074 /* Get the second opcode. */
3075 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3077 if ((code & 0xf0) < 0x80)
3078 switch (code & 0xf0)
3080 /* mov (d32,am),dn -> mov (d32,am),dn
3081 mov dm,(d32,am) -> mov dn,(d32,am)
3082 mov (d32,am),an -> mov (d32,am),an
3083 mov dm,(d32,am) -> mov dn,(d32,am)
3084 movbu (d32,am),dn -> movbu (d32,am),dn
3085 movbu dm,(d32,am) -> movbu dn,(d32,am)
3086 movhu (d32,am),dn -> movhu (d32,am),dn
3087 movhu dm,(d32,am) -> movhu dn,(d32,am) */
3096 /* Not safe if the high bit is on as relaxing may
3097 move the value out of high mem and thus not fit
3098 in a signed 16bit value. */
3100 && (value & 0x8000))
3103 /* Note that we've changed the relocation contents, etc. */
3104 elf_section_data (sec)->relocs = internal_relocs;
3105 elf_section_data (sec)->this_hdr.contents = contents;
3106 symtab_hdr->contents = (unsigned char *) isymbuf;
3108 /* Fix the opcode. */
3109 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3110 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3112 /* Fix the relocation's type. */
3113 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3114 (ELF32_R_TYPE (irel->r_info)
3115 == (int) R_MN10300_GOTOFF32)
3116 ? R_MN10300_GOTOFF16
3117 : (ELF32_R_TYPE (irel->r_info)
3118 == (int) R_MN10300_GOT32)
3120 : (ELF32_R_TYPE (irel->r_info)
3121 == (int) R_MN10300_GOTPC32)
3122 ? R_MN10300_GOTPC16 :
3125 /* Delete two bytes of data. */
3126 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3127 irel->r_offset + 2, 2))
3130 /* That will change things, so, we should relax again.
3131 Note that this is not required, and it may be slow. */
3135 else if ((code & 0xf0) == 0x80
3136 || (code & 0xf0) == 0x90)
3137 switch (code & 0xf3)
3139 /* mov dn,(abs32) -> mov dn,(abs16)
3140 movbu dn,(abs32) -> movbu dn,(abs16)
3141 movhu dn,(abs32) -> movhu dn,(abs16) */
3145 /* Note that we've changed the relocation contents, etc. */
3146 elf_section_data (sec)->relocs = internal_relocs;
3147 elf_section_data (sec)->this_hdr.contents = contents;
3148 symtab_hdr->contents = (unsigned char *) isymbuf;
3150 if ((code & 0xf3) == 0x81)
3151 code = 0x01 + (code & 0x0c);
3152 else if ((code & 0xf3) == 0x82)
3153 code = 0x02 + (code & 0x0c);
3154 else if ((code & 0xf3) == 0x83)
3155 code = 0x03 + (code & 0x0c);
3159 /* Fix the opcode. */
3160 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3162 /* Fix the relocation's type. */
3163 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3164 (ELF32_R_TYPE (irel->r_info)
3165 == (int) R_MN10300_GOTOFF32)
3166 ? R_MN10300_GOTOFF16
3167 : (ELF32_R_TYPE (irel->r_info)
3168 == (int) R_MN10300_GOT32)
3170 : (ELF32_R_TYPE (irel->r_info)
3171 == (int) R_MN10300_GOTPC32)
3172 ? R_MN10300_GOTPC16 :
3175 /* The opcode got shorter too, so we have to fix the
3176 addend and offset too! */
3177 irel->r_offset -= 1;
3179 /* Delete three bytes of data. */
3180 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3181 irel->r_offset + 1, 3))
3184 /* That will change things, so, we should relax again.
3185 Note that this is not required, and it may be slow. */
3189 /* mov am,(abs32) -> mov am,(abs16)
3190 mov am,(d32,sp) -> mov am,(d16,sp)
3191 mov dm,(d32,sp) -> mov dm,(d32,sp)
3192 movbu dm,(d32,sp) -> movbu dm,(d32,sp)
3193 movhu dm,(d32,sp) -> movhu dm,(d32,sp) */
3199 /* sp-based offsets are zero-extended. */
3200 if (code >= 0x90 && code <= 0x93
3204 /* Note that we've changed the relocation contents, etc. */
3205 elf_section_data (sec)->relocs = internal_relocs;
3206 elf_section_data (sec)->this_hdr.contents = contents;
3207 symtab_hdr->contents = (unsigned char *) isymbuf;
3209 /* Fix the opcode. */
3210 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3211 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3213 /* Fix the relocation's type. */
3214 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3215 (ELF32_R_TYPE (irel->r_info)
3216 == (int) R_MN10300_GOTOFF32)
3217 ? R_MN10300_GOTOFF16
3218 : (ELF32_R_TYPE (irel->r_info)
3219 == (int) R_MN10300_GOT32)
3221 : (ELF32_R_TYPE (irel->r_info)
3222 == (int) R_MN10300_GOTPC32)
3223 ? R_MN10300_GOTPC16 :
3226 /* Delete two bytes of data. */
3227 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3228 irel->r_offset + 2, 2))
3231 /* That will change things, so, we should relax again.
3232 Note that this is not required, and it may be slow. */
3236 else if ((code & 0xf0) < 0xf0)
3237 switch (code & 0xfc)
3239 /* mov imm32,dn -> mov imm16,dn
3240 mov imm32,an -> mov imm16,an
3241 mov (abs32),dn -> mov (abs16),dn
3242 movbu (abs32),dn -> movbu (abs16),dn
3243 movhu (abs32),dn -> movhu (abs16),dn */
3249 /* Not safe if the high bit is on as relaxing may
3250 move the value out of high mem and thus not fit
3251 in a signed 16bit value. */
3253 && (value & 0x8000))
3256 /* mov imm16, an zero-extends the immediate. */
3261 /* Note that we've changed the relocation contents, etc. */
3262 elf_section_data (sec)->relocs = internal_relocs;
3263 elf_section_data (sec)->this_hdr.contents = contents;
3264 symtab_hdr->contents = (unsigned char *) isymbuf;
3266 if ((code & 0xfc) == 0xcc)
3267 code = 0x2c + (code & 0x03);
3268 else if ((code & 0xfc) == 0xdc)
3269 code = 0x24 + (code & 0x03);
3270 else if ((code & 0xfc) == 0xa4)
3271 code = 0x30 + (code & 0x03);
3272 else if ((code & 0xfc) == 0xa8)
3273 code = 0x34 + (code & 0x03);
3274 else if ((code & 0xfc) == 0xac)
3275 code = 0x38 + (code & 0x03);
3279 /* Fix the opcode. */
3280 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3282 /* Fix the relocation's type. */
3283 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3284 (ELF32_R_TYPE (irel->r_info)
3285 == (int) R_MN10300_GOTOFF32)
3286 ? R_MN10300_GOTOFF16
3287 : (ELF32_R_TYPE (irel->r_info)
3288 == (int) R_MN10300_GOT32)
3290 : (ELF32_R_TYPE (irel->r_info)
3291 == (int) R_MN10300_GOTPC32)
3292 ? R_MN10300_GOTPC16 :
3295 /* The opcode got shorter too, so we have to fix the
3296 addend and offset too! */
3297 irel->r_offset -= 1;
3299 /* Delete three bytes of data. */
3300 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3301 irel->r_offset + 1, 3))
3304 /* That will change things, so, we should relax again.
3305 Note that this is not required, and it may be slow. */
3309 /* mov (abs32),an -> mov (abs16),an
3310 mov (d32,sp),an -> mov (d16,sp),an
3311 mov (d32,sp),dn -> mov (d16,sp),dn
3312 movbu (d32,sp),dn -> movbu (d16,sp),dn
3313 movhu (d32,sp),dn -> movhu (d16,sp),dn
3314 add imm32,dn -> add imm16,dn
3315 cmp imm32,dn -> cmp imm16,dn
3316 add imm32,an -> add imm16,an
3317 cmp imm32,an -> cmp imm16,an
3318 and imm32,dn -> and imm16,dn
3319 or imm32,dn -> or imm16,dn
3320 xor imm32,dn -> xor imm16,dn
3321 btst imm32,dn -> btst imm16,dn */
3337 /* cmp imm16, an zero-extends the immediate. */
3342 /* So do sp-based offsets. */
3343 if (code >= 0xb0 && code <= 0xb3
3347 /* Note that we've changed the relocation contents, etc. */
3348 elf_section_data (sec)->relocs = internal_relocs;
3349 elf_section_data (sec)->this_hdr.contents = contents;
3350 symtab_hdr->contents = (unsigned char *) isymbuf;
3352 /* Fix the opcode. */
3353 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3354 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3356 /* Fix the relocation's type. */
3357 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3358 (ELF32_R_TYPE (irel->r_info)
3359 == (int) R_MN10300_GOTOFF32)
3360 ? R_MN10300_GOTOFF16
3361 : (ELF32_R_TYPE (irel->r_info)
3362 == (int) R_MN10300_GOT32)
3364 : (ELF32_R_TYPE (irel->r_info)
3365 == (int) R_MN10300_GOTPC32)
3366 ? R_MN10300_GOTPC16 :
3369 /* Delete two bytes of data. */
3370 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3371 irel->r_offset + 2, 2))
3374 /* That will change things, so, we should relax again.
3375 Note that this is not required, and it may be slow. */
3379 else if (code == 0xfe)
3381 /* add imm32,sp -> add imm16,sp */
3383 /* Note that we've changed the relocation contents, etc. */
3384 elf_section_data (sec)->relocs = internal_relocs;
3385 elf_section_data (sec)->this_hdr.contents = contents;
3386 symtab_hdr->contents = (unsigned char *) isymbuf;
3388 /* Fix the opcode. */
3389 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3390 bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1);
3392 /* Fix the relocation's type. */
3393 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3394 (ELF32_R_TYPE (irel->r_info)
3395 == (int) R_MN10300_GOT32)
3397 : (ELF32_R_TYPE (irel->r_info)
3398 == (int) R_MN10300_GOTOFF32)
3399 ? R_MN10300_GOTOFF16
3400 : (ELF32_R_TYPE (irel->r_info)
3401 == (int) R_MN10300_GOTPC32)
3402 ? R_MN10300_GOTPC16 :
3405 /* Delete two bytes of data. */
3406 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3407 irel->r_offset + 2, 2))
3410 /* That will change things, so, we should relax again.
3411 Note that this is not required, and it may be slow. */
3420 && symtab_hdr->contents != (unsigned char *) isymbuf)
3422 if (! link_info->keep_memory)
3426 /* Cache the symbols for elf_link_input_bfd. */
3427 symtab_hdr->contents = (unsigned char *) isymbuf;
3431 if (contents != NULL
3432 && elf_section_data (sec)->this_hdr.contents != contents)
3434 if (! link_info->keep_memory)
3438 /* Cache the section contents for elf_link_input_bfd. */
3439 elf_section_data (sec)->this_hdr.contents = contents;
3443 if (internal_relocs != NULL
3444 && elf_section_data (sec)->relocs != internal_relocs)
3445 free (internal_relocs);
3451 && symtab_hdr->contents != (unsigned char *) isymbuf)
3453 if (contents != NULL
3454 && elf_section_data (section)->this_hdr.contents != contents)
3456 if (internal_relocs != NULL
3457 && elf_section_data (section)->relocs != internal_relocs)
3458 free (internal_relocs);
3463 /* Compute the stack size and movm arguments for the function
3464 referred to by HASH at address ADDR in section with
3465 contents CONTENTS, store the information in the hash table. */
3467 compute_function_info (abfd, hash, addr, contents)
3469 struct elf32_mn10300_link_hash_entry *hash;
3471 unsigned char *contents;
3473 unsigned char byte1, byte2;
3474 /* We only care about a very small subset of the possible prologue
3475 sequences here. Basically we look for:
3477 movm [d2,d3,a2,a3],sp (optional)
3478 add <size>,sp (optional, and only for sizes which fit in an unsigned
3481 If we find anything else, we quit. */
3483 /* Look for movm [regs],sp */
3484 byte1 = bfd_get_8 (abfd, contents + addr);
3485 byte2 = bfd_get_8 (abfd, contents + addr + 1);
3489 hash->movm_args = byte2;
3491 byte1 = bfd_get_8 (abfd, contents + addr);
3492 byte2 = bfd_get_8 (abfd, contents + addr + 1);
3495 /* Now figure out how much stack space will be allocated by the movm
3496 instruction. We need this kept separate from the function's normal
3498 if (hash->movm_args)
3501 if (hash->movm_args & 0x80)
3502 hash->movm_stack_size += 4;
3505 if (hash->movm_args & 0x40)
3506 hash->movm_stack_size += 4;
3509 if (hash->movm_args & 0x20)
3510 hash->movm_stack_size += 4;
3513 if (hash->movm_args & 0x10)
3514 hash->movm_stack_size += 4;
3516 /* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */
3517 if (hash->movm_args & 0x08)
3518 hash->movm_stack_size += 8 * 4;
3520 if (bfd_get_mach (abfd) == bfd_mach_am33
3521 || bfd_get_mach (abfd) == bfd_mach_am33_2)
3523 /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */
3524 if (hash->movm_args & 0x1)
3525 hash->movm_stack_size += 6 * 4;
3527 /* exreg1 space. e4, e5, e6, e7 */
3528 if (hash->movm_args & 0x2)
3529 hash->movm_stack_size += 4 * 4;
3531 /* exreg0 space. e2, e3 */
3532 if (hash->movm_args & 0x4)
3533 hash->movm_stack_size += 2 * 4;
3537 /* Now look for the two stack adjustment variants. */
3538 if (byte1 == 0xf8 && byte2 == 0xfe)
3540 int temp = bfd_get_8 (abfd, contents + addr + 2);
3541 temp = ((temp & 0xff) ^ (~0x7f)) + 0x80;
3543 hash->stack_size = -temp;
3545 else if (byte1 == 0xfa && byte2 == 0xfe)
3547 int temp = bfd_get_16 (abfd, contents + addr + 2);
3548 temp = ((temp & 0xffff) ^ (~0x7fff)) + 0x8000;
3552 hash->stack_size = temp;
3555 /* If the total stack to be allocated by the call instruction is more
3556 than 255 bytes, then we can't remove the stack adjustment by using
3557 "call" (we might still be able to remove the "movm" instruction. */
3558 if (hash->stack_size + hash->movm_stack_size > 255)
3559 hash->stack_size = 0;
3564 /* Delete some bytes from a section while relaxing. */
3567 mn10300_elf_relax_delete_bytes (abfd, sec, addr, count)
3573 Elf_Internal_Shdr *symtab_hdr;
3574 unsigned int sec_shndx;
3576 Elf_Internal_Rela *irel, *irelend;
3577 Elf_Internal_Rela *irelalign;
3579 Elf_Internal_Sym *isym, *isymend;
3580 struct elf_link_hash_entry **sym_hashes;
3581 struct elf_link_hash_entry **end_hashes;
3582 unsigned int symcount;
3584 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
3586 contents = elf_section_data (sec)->this_hdr.contents;
3588 /* The deletion must stop at the next ALIGN reloc for an aligment
3589 power larger than the number of bytes we are deleting. */
3592 toaddr = sec->_cooked_size;
3594 irel = elf_section_data (sec)->relocs;
3595 irelend = irel + sec->reloc_count;
3597 /* Actually delete the bytes. */
3598 memmove (contents + addr, contents + addr + count,
3599 (size_t) (toaddr - addr - count));
3600 sec->_cooked_size -= count;
3602 /* Adjust all the relocs. */
3603 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
3605 /* Get the new reloc address. */
3606 if ((irel->r_offset > addr
3607 && irel->r_offset < toaddr))
3608 irel->r_offset -= count;
3611 /* Adjust the local symbols defined in this section. */
3612 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3613 isym = (Elf_Internal_Sym *) symtab_hdr->contents;
3614 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
3616 if (isym->st_shndx == sec_shndx
3617 && isym->st_value > addr
3618 && isym->st_value < toaddr)
3619 isym->st_value -= count;
3622 /* Now adjust the global symbols defined in this section. */
3623 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
3624 - symtab_hdr->sh_info);
3625 sym_hashes = elf_sym_hashes (abfd);
3626 end_hashes = sym_hashes + symcount;
3627 for (; sym_hashes < end_hashes; sym_hashes++)
3629 struct elf_link_hash_entry *sym_hash = *sym_hashes;
3630 if ((sym_hash->root.type == bfd_link_hash_defined
3631 || sym_hash->root.type == bfd_link_hash_defweak)
3632 && sym_hash->root.u.def.section == sec
3633 && sym_hash->root.u.def.value > addr
3634 && sym_hash->root.u.def.value < toaddr)
3636 sym_hash->root.u.def.value -= count;
3643 /* Return TRUE if a symbol exists at the given address, else return
3646 mn10300_elf_symbol_address_p (abfd, sec, isym, addr)
3649 Elf_Internal_Sym *isym;
3652 Elf_Internal_Shdr *symtab_hdr;
3653 unsigned int sec_shndx;
3654 Elf_Internal_Sym *isymend;
3655 struct elf_link_hash_entry **sym_hashes;
3656 struct elf_link_hash_entry **end_hashes;
3657 unsigned int symcount;
3659 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
3661 /* Examine all the symbols. */
3662 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3663 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
3665 if (isym->st_shndx == sec_shndx
3666 && isym->st_value == addr)
3670 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
3671 - symtab_hdr->sh_info);
3672 sym_hashes = elf_sym_hashes (abfd);
3673 end_hashes = sym_hashes + symcount;
3674 for (; sym_hashes < end_hashes; sym_hashes++)
3676 struct elf_link_hash_entry *sym_hash = *sym_hashes;
3677 if ((sym_hash->root.type == bfd_link_hash_defined
3678 || sym_hash->root.type == bfd_link_hash_defweak)
3679 && sym_hash->root.u.def.section == sec
3680 && sym_hash->root.u.def.value == addr)
3687 /* This is a version of bfd_generic_get_relocated_section_contents
3688 which uses mn10300_elf_relocate_section. */
3691 mn10300_elf_get_relocated_section_contents (output_bfd, link_info, link_order,
3692 data, relocatable, symbols)
3694 struct bfd_link_info *link_info;
3695 struct bfd_link_order *link_order;
3697 bfd_boolean relocatable;
3700 Elf_Internal_Shdr *symtab_hdr;
3701 asection *input_section = link_order->u.indirect.section;
3702 bfd *input_bfd = input_section->owner;
3703 asection **sections = NULL;
3704 Elf_Internal_Rela *internal_relocs = NULL;
3705 Elf_Internal_Sym *isymbuf = NULL;
3707 /* We only need to handle the case of relaxing, or of having a
3708 particular set of section contents, specially. */
3710 || elf_section_data (input_section)->this_hdr.contents == NULL)
3711 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
3716 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3718 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
3719 (size_t) input_section->_raw_size);
3721 if ((input_section->flags & SEC_RELOC) != 0
3722 && input_section->reloc_count > 0)
3725 Elf_Internal_Sym *isym, *isymend;
3728 internal_relocs = (_bfd_elf_link_read_relocs
3729 (input_bfd, input_section, (PTR) NULL,
3730 (Elf_Internal_Rela *) NULL, FALSE));
3731 if (internal_relocs == NULL)
3734 if (symtab_hdr->sh_info != 0)
3736 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
3737 if (isymbuf == NULL)
3738 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
3739 symtab_hdr->sh_info, 0,
3741 if (isymbuf == NULL)
3745 amt = symtab_hdr->sh_info;
3746 amt *= sizeof (asection *);
3747 sections = (asection **) bfd_malloc (amt);
3748 if (sections == NULL && amt != 0)
3751 isymend = isymbuf + symtab_hdr->sh_info;
3752 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
3756 if (isym->st_shndx == SHN_UNDEF)
3757 isec = bfd_und_section_ptr;
3758 else if (isym->st_shndx == SHN_ABS)
3759 isec = bfd_abs_section_ptr;
3760 else if (isym->st_shndx == SHN_COMMON)
3761 isec = bfd_com_section_ptr;
3763 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
3768 if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd,
3769 input_section, data, internal_relocs,
3773 if (sections != NULL)
3775 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
3777 if (internal_relocs != elf_section_data (input_section)->relocs)
3778 free (internal_relocs);
3784 if (sections != NULL)
3786 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
3788 if (internal_relocs != NULL
3789 && internal_relocs != elf_section_data (input_section)->relocs)
3790 free (internal_relocs);
3794 /* Assorted hash table functions. */
3796 /* Initialize an entry in the link hash table. */
3798 /* Create an entry in an MN10300 ELF linker hash table. */
3800 static struct bfd_hash_entry *
3801 elf32_mn10300_link_hash_newfunc (entry, table, string)
3802 struct bfd_hash_entry *entry;
3803 struct bfd_hash_table *table;
3806 struct elf32_mn10300_link_hash_entry *ret =
3807 (struct elf32_mn10300_link_hash_entry *) entry;
3809 /* Allocate the structure if it has not already been allocated by a
3811 if (ret == (struct elf32_mn10300_link_hash_entry *) NULL)
3812 ret = ((struct elf32_mn10300_link_hash_entry *)
3813 bfd_hash_allocate (table,
3814 sizeof (struct elf32_mn10300_link_hash_entry)));
3815 if (ret == (struct elf32_mn10300_link_hash_entry *) NULL)
3816 return (struct bfd_hash_entry *) ret;
3818 /* Call the allocation method of the superclass. */
3819 ret = ((struct elf32_mn10300_link_hash_entry *)
3820 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
3822 if (ret != (struct elf32_mn10300_link_hash_entry *) NULL)
3824 ret->direct_calls = 0;
3825 ret->stack_size = 0;
3827 ret->movm_stack_size = 0;
3828 ret->pcrel_relocs_copied = NULL;
3832 return (struct bfd_hash_entry *) ret;
3835 /* Create an mn10300 ELF linker hash table. */
3837 static struct bfd_link_hash_table *
3838 elf32_mn10300_link_hash_table_create (abfd)
3841 struct elf32_mn10300_link_hash_table *ret;
3842 bfd_size_type amt = sizeof (struct elf32_mn10300_link_hash_table);
3844 ret = (struct elf32_mn10300_link_hash_table *) bfd_malloc (amt);
3845 if (ret == (struct elf32_mn10300_link_hash_table *) NULL)
3848 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
3849 elf32_mn10300_link_hash_newfunc))
3856 amt = sizeof (struct elf_link_hash_table);
3857 ret->static_hash_table
3858 = (struct elf32_mn10300_link_hash_table *) bfd_malloc (amt);
3859 if (ret->static_hash_table == NULL)
3865 if (! _bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd,
3866 elf32_mn10300_link_hash_newfunc))
3868 free (ret->static_hash_table);
3872 return &ret->root.root;
3875 /* Free an mn10300 ELF linker hash table. */
3878 elf32_mn10300_link_hash_table_free (hash)
3879 struct bfd_link_hash_table *hash;
3881 struct elf32_mn10300_link_hash_table *ret
3882 = (struct elf32_mn10300_link_hash_table *) hash;
3884 _bfd_generic_link_hash_table_free
3885 ((struct bfd_link_hash_table *) ret->static_hash_table);
3886 _bfd_generic_link_hash_table_free
3887 ((struct bfd_link_hash_table *) ret);
3890 static unsigned long
3891 elf_mn10300_mach (flags)
3894 switch (flags & EF_MN10300_MACH)
3896 case E_MN10300_MACH_MN10300:
3898 return bfd_mach_mn10300;
3900 case E_MN10300_MACH_AM33:
3901 return bfd_mach_am33;
3903 case E_MN10300_MACH_AM33_2:
3904 return bfd_mach_am33_2;
3908 /* The final processing done just before writing out a MN10300 ELF object
3909 file. This gets the MN10300 architecture right based on the machine
3913 _bfd_mn10300_elf_final_write_processing (abfd, linker)
3915 bfd_boolean linker ATTRIBUTE_UNUSED;
3919 switch (bfd_get_mach (abfd))
3922 case bfd_mach_mn10300:
3923 val = E_MN10300_MACH_MN10300;
3927 val = E_MN10300_MACH_AM33;
3930 case bfd_mach_am33_2:
3931 val = E_MN10300_MACH_AM33_2;
3935 elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH);
3936 elf_elfheader (abfd)->e_flags |= val;
3940 _bfd_mn10300_elf_object_p (abfd)
3943 bfd_default_set_arch_mach (abfd, bfd_arch_mn10300,
3944 elf_mn10300_mach (elf_elfheader (abfd)->e_flags));
3948 /* Merge backend specific data from an object file to the output
3949 object file when linking. */
3952 _bfd_mn10300_elf_merge_private_bfd_data (ibfd, obfd)
3956 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3957 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3960 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3961 && bfd_get_mach (obfd) < bfd_get_mach (ibfd))
3963 if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3964 bfd_get_mach (ibfd)))
3971 #define PLT0_ENTRY_SIZE 15
3972 #define PLT_ENTRY_SIZE 20
3973 #define PIC_PLT_ENTRY_SIZE 24
3975 static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] =
3977 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */
3978 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */
3979 0xf0, 0xf4, /* jmp (a0) */
3982 static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] =
3984 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */
3985 0xf0, 0xf4, /* jmp (a0) */
3986 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
3987 0xdc, 0, 0, 0, 0, /* jmp .plt0 */
3990 static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] =
3992 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */
3993 0xf0, 0xf4, /* jmp (a0) */
3994 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
3995 0xf8, 0x22, 8, /* mov (8,a2),a0 */
3996 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */
3997 0xf0, 0xf4, /* jmp (a0) */
4000 /* Return size of the first PLT entry. */
4001 #define elf_mn10300_sizeof_plt0(info) \
4002 (info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE)
4004 /* Return size of a PLT entry. */
4005 #define elf_mn10300_sizeof_plt(info) \
4006 (info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE)
4008 /* Return offset of the PLT0 address in an absolute PLT entry. */
4009 #define elf_mn10300_plt_plt0_offset(info) 16
4011 /* Return offset of the linker in PLT0 entry. */
4012 #define elf_mn10300_plt0_linker_offset(info) 2
4014 /* Return offset of the GOT id in PLT0 entry. */
4015 #define elf_mn10300_plt0_gotid_offset(info) 9
4017 /* Return offset of the temporary in PLT entry */
4018 #define elf_mn10300_plt_temp_offset(info) 8
4020 /* Return offset of the symbol in PLT entry. */
4021 #define elf_mn10300_plt_symbol_offset(info) 2
4023 /* Return offset of the relocation in PLT entry. */
4024 #define elf_mn10300_plt_reloc_offset(info) 11
4026 /* The name of the dynamic interpreter. This is put in the .interp
4029 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
4031 /* Create dynamic sections when linking against a dynamic object. */
4034 _bfd_mn10300_elf_create_dynamic_sections (abfd, info)
4036 struct bfd_link_info *info;
4040 const struct elf_backend_data * bed = get_elf_backend_data (abfd);
4043 switch (bed->s->arch_size)
4054 bfd_set_error (bfd_error_bad_value);
4058 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
4059 .rel[a].bss sections. */
4061 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4062 | SEC_LINKER_CREATED);
4064 s = bfd_make_section (abfd,
4065 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt");
4067 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
4068 || ! bfd_set_section_alignment (abfd, s, ptralign))
4071 if (! _bfd_mn10300_elf_create_got_section (abfd, info))
4075 const char * secname;
4080 for (sec = abfd->sections; sec; sec = sec->next)
4082 secflags = bfd_get_section_flags (abfd, sec);
4083 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
4084 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
4087 secname = bfd_get_section_name (abfd, sec);
4088 relname = (char *) bfd_malloc (strlen (secname) + 6);
4089 strcpy (relname, ".rela");
4090 strcat (relname, secname);
4092 s = bfd_make_section (abfd, relname);
4094 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
4095 || ! bfd_set_section_alignment (abfd, s, ptralign))
4100 if (bed->want_dynbss)
4102 /* The .dynbss section is a place to put symbols which are defined
4103 by dynamic objects, are referenced by regular objects, and are
4104 not functions. We must allocate space for them in the process
4105 image and use a R_*_COPY reloc to tell the dynamic linker to
4106 initialize them at run time. The linker script puts the .dynbss
4107 section into the .bss section of the final image. */
4108 s = bfd_make_section (abfd, ".dynbss");
4110 || ! bfd_set_section_flags (abfd, s, SEC_ALLOC))
4113 /* The .rel[a].bss section holds copy relocs. This section is not
4114 normally needed. We need to create it here, though, so that the
4115 linker will map it to an output section. We can't just create it
4116 only if we need it, because we will not know whether we need it
4117 until we have seen all the input files, and the first time the
4118 main linker code calls BFD after examining all the input files
4119 (size_dynamic_sections) the input sections have already been
4120 mapped to the output sections. If the section turns out not to
4121 be needed, we can discard it later. We will never need this
4122 section when generating a shared object, since they do not use
4126 s = bfd_make_section (abfd,
4127 (bed->default_use_rela_p
4128 ? ".rela.bss" : ".rel.bss"));
4130 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
4131 || ! bfd_set_section_alignment (abfd, s, ptralign))
4139 /* Adjust a symbol defined by a dynamic object and referenced by a
4140 regular object. The current definition is in some section of the
4141 dynamic object, but we're not including those sections. We have to
4142 change the definition to something the rest of the link can
4146 _bfd_mn10300_elf_adjust_dynamic_symbol (info, h)
4147 struct bfd_link_info * info;
4148 struct elf_link_hash_entry * h;
4152 unsigned int power_of_two;
4154 dynobj = elf_hash_table (info)->dynobj;
4156 /* Make sure we know what is going on here. */
4157 BFD_ASSERT (dynobj != NULL
4158 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
4159 || h->weakdef != NULL
4160 || ((h->elf_link_hash_flags
4161 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
4162 && (h->elf_link_hash_flags
4163 & ELF_LINK_HASH_REF_REGULAR) != 0
4164 && (h->elf_link_hash_flags
4165 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
4167 /* If this is a function, put it in the procedure linkage table. We
4168 will fill in the contents of the procedure linkage table later,
4169 when we know the address of the .got section. */
4170 if (h->type == STT_FUNC
4171 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
4174 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
4175 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0)
4177 /* This case can occur if we saw a PLT reloc in an input
4178 file, but the symbol was never referred to by a dynamic
4179 object. In such a case, we don't actually need to build
4180 a procedure linkage table, and we can just do a REL32
4182 BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0);
4186 /* Make sure this symbol is output as a dynamic symbol. */
4187 if (h->dynindx == -1)
4189 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4193 s = bfd_get_section_by_name (dynobj, ".plt");
4194 BFD_ASSERT (s != NULL);
4196 /* If this is the first .plt entry, make room for the special
4198 if (s->_raw_size == 0)
4199 s->_raw_size += elf_mn10300_sizeof_plt0 (info);
4201 /* If this symbol is not defined in a regular file, and we are
4202 not generating a shared library, then set the symbol to this
4203 location in the .plt. This is required to make function
4204 pointers compare as equal between the normal executable and
4205 the shared library. */
4207 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4209 h->root.u.def.section = s;
4210 h->root.u.def.value = s->_raw_size;
4213 h->plt.offset = s->_raw_size;
4215 /* Make room for this entry. */
4216 s->_raw_size += elf_mn10300_sizeof_plt (info);
4218 /* We also need to make an entry in the .got.plt section, which
4219 will be placed in the .got section by the linker script. */
4221 s = bfd_get_section_by_name (dynobj, ".got.plt");
4222 BFD_ASSERT (s != NULL);
4225 /* We also need to make an entry in the .rela.plt section. */
4227 s = bfd_get_section_by_name (dynobj, ".rela.plt");
4228 BFD_ASSERT (s != NULL);
4229 s->_raw_size += sizeof (Elf32_External_Rela);
4234 /* If this is a weak symbol, and there is a real definition, the
4235 processor independent code will have arranged for us to see the
4236 real definition first, and we can just use the same value. */
4237 if (h->weakdef != NULL)
4239 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
4240 || h->weakdef->root.type == bfd_link_hash_defweak);
4241 h->root.u.def.section = h->weakdef->root.u.def.section;
4242 h->root.u.def.value = h->weakdef->root.u.def.value;
4246 /* This is a reference to a symbol defined by a dynamic object which
4247 is not a function. */
4249 /* If we are creating a shared library, we must presume that the
4250 only references to the symbol are via the global offset table.
4251 For such cases we need not do anything here; the relocations will
4252 be handled correctly by relocate_section. */
4256 /* If there are no references to this symbol that do not use the
4257 GOT, we don't need to generate a copy reloc. */
4258 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
4261 /* We must allocate the symbol in our .dynbss section, which will
4262 become part of the .bss section of the executable. There will be
4263 an entry for this symbol in the .dynsym section. The dynamic
4264 object will contain position independent code, so all references
4265 from the dynamic object to this symbol will go through the global
4266 offset table. The dynamic linker will use the .dynsym entry to
4267 determine the address it must put in the global offset table, so
4268 both the dynamic object and the regular object will refer to the
4269 same memory location for the variable. */
4271 s = bfd_get_section_by_name (dynobj, ".dynbss");
4272 BFD_ASSERT (s != NULL);
4274 /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to
4275 copy the initial value out of the dynamic object and into the
4276 runtime process image. We need to remember the offset into the
4277 .rela.bss section we are going to use. */
4278 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4282 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
4283 BFD_ASSERT (srel != NULL);
4284 srel->_raw_size += sizeof (Elf32_External_Rela);
4285 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
4288 /* We need to figure out the alignment required for this symbol. I
4289 have no idea how ELF linkers handle this. */
4290 power_of_two = bfd_log2 (h->size);
4291 if (power_of_two > 3)
4294 /* Apply the required alignment. */
4295 s->_raw_size = BFD_ALIGN (s->_raw_size,
4296 (bfd_size_type) (1 << power_of_two));
4297 if (power_of_two > bfd_get_section_alignment (dynobj, s))
4299 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
4303 /* Define the symbol as being at this point in the section. */
4304 h->root.u.def.section = s;
4305 h->root.u.def.value = s->_raw_size;
4307 /* Increment the section size to make room for the symbol. */
4308 s->_raw_size += h->size;
4313 /* This function is called via elf32_mn10300_link_hash_traverse if we are
4314 creating a shared object with -Bsymbolic. It discards the space
4315 allocated to copy PC relative relocs against symbols which are
4316 defined in regular objects. We allocated space for them in the
4317 check_relocs routine, but we won't fill them in in the
4318 relocate_section routine. */
4321 _bfd_mn10300_elf_discard_copies (h, info)
4322 struct elf32_mn10300_link_hash_entry *h;
4323 struct bfd_link_info *info;
4325 struct elf_mn10300_pcrel_relocs_copied *s;
4327 /* If a symbol has been forced local or we have found a regular
4328 definition for the symbolic link case, then we won't be needing
4330 if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
4331 && ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
4334 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
4335 s->section->_raw_size -= s->count * sizeof (Elf32_External_Rel);
4341 /* Set the sizes of the dynamic sections. */
4344 _bfd_mn10300_elf_size_dynamic_sections (output_bfd, info)
4346 struct bfd_link_info * info;
4352 bfd_boolean reltext;
4354 dynobj = elf_hash_table (info)->dynobj;
4355 BFD_ASSERT (dynobj != NULL);
4357 if (elf_hash_table (info)->dynamic_sections_created)
4359 /* Set the contents of the .interp section to the interpreter. */
4360 if (info->executable)
4362 s = bfd_get_section_by_name (dynobj, ".interp");
4363 BFD_ASSERT (s != NULL);
4364 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
4365 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4370 /* We may have created entries in the .rela.got section.
4371 However, if we are not creating the dynamic sections, we will
4372 not actually use these entries. Reset the size of .rela.got,
4373 which will cause it to get stripped from the output file
4375 s = bfd_get_section_by_name (dynobj, ".rela.got");
4380 /* If this is a -Bsymbolic shared link, then we need to discard all
4381 PC relative relocs against symbols defined in a regular object.
4382 We allocated space for them in the check_relocs routine, but we
4383 will not fill them in in the relocate_section routine. */
4384 if (info->shared && info->symbolic)
4385 elf32_mn10300_link_hash_traverse (elf32_mn10300_hash_table (info),
4386 _bfd_mn10300_elf_discard_copies,
4389 /* The check_relocs and adjust_dynamic_symbol entry points have
4390 determined the sizes of the various dynamic sections. Allocate
4395 for (s = dynobj->sections; s != NULL; s = s->next)
4400 if ((s->flags & SEC_LINKER_CREATED) == 0)
4403 /* It's OK to base decisions on the section name, because none
4404 of the dynobj section names depend upon the input files. */
4405 name = bfd_get_section_name (dynobj, s);
4409 if (strcmp (name, ".plt") == 0)
4411 if (s->_raw_size == 0)
4412 /* Strip this section if we don't need it; see the
4416 /* Remember whether there is a PLT. */
4419 else if (strncmp (name, ".rela", 5) == 0)
4421 if (s->_raw_size == 0)
4423 /* If we don't need this section, strip it from the
4424 output file. This is mostly to handle .rela.bss and
4425 .rela.plt. We must create both sections in
4426 create_dynamic_sections, because they must be created
4427 before the linker maps input sections to output
4428 sections. The linker does that before
4429 adjust_dynamic_symbol is called, and it is that
4430 function which decides whether anything needs to go
4431 into these sections. */
4438 /* Remember whether there are any reloc sections other
4440 if (strcmp (name, ".rela.plt") != 0)
4442 const char * outname;
4446 /* If this relocation section applies to a read only
4447 section, then we probably need a DT_TEXTREL
4448 entry. The entries in the .rela.plt section
4449 really apply to the .got section, which we
4450 created ourselves and so know is not readonly. */
4451 outname = bfd_get_section_name (output_bfd,
4453 target = bfd_get_section_by_name (output_bfd, outname + 5);
4455 && (target->flags & SEC_READONLY) != 0
4456 && (target->flags & SEC_ALLOC) != 0)
4460 /* We use the reloc_count field as a counter if we need
4461 to copy relocs into the output file. */
4465 else if (strncmp (name, ".got", 4) != 0)
4466 /* It's not one of our sections, so don't allocate space. */
4471 _bfd_strip_section_from_output (info, s);
4475 /* Allocate memory for the section contents. We use bfd_zalloc
4476 here in case unused entries are not reclaimed before the
4477 section's contents are written out. This should not happen,
4478 but this way if it does, we get a R_MN10300_NONE reloc
4479 instead of garbage. */
4480 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
4481 if (s->contents == NULL && s->_raw_size != 0)
4485 if (elf_hash_table (info)->dynamic_sections_created)
4487 /* Add some entries to the .dynamic section. We fill in the
4488 values later, in _bfd_mn10300_elf_finish_dynamic_sections,
4489 but we must add the entries now so that we get the correct
4490 size for the .dynamic section. The DT_DEBUG entry is filled
4491 in by the dynamic linker and used by the debugger. */
4494 if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0))
4500 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)
4501 || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0)
4502 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
4503 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0))
4509 if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0)
4510 || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0)
4511 || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT,
4512 sizeof (Elf32_External_Rela)))
4518 if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0))
4526 /* Finish up dynamic symbol handling. We set the contents of various
4527 dynamic sections here. */
4530 _bfd_mn10300_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
4532 struct bfd_link_info * info;
4533 struct elf_link_hash_entry * h;
4534 Elf_Internal_Sym * sym;
4538 dynobj = elf_hash_table (info)->dynobj;
4540 if (h->plt.offset != (bfd_vma) -1)
4547 Elf_Internal_Rela rel;
4549 /* This symbol has an entry in the procedure linkage table. Set
4552 BFD_ASSERT (h->dynindx != -1);
4554 splt = bfd_get_section_by_name (dynobj, ".plt");
4555 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
4556 srel = bfd_get_section_by_name (dynobj, ".rela.plt");
4557 BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
4559 /* Get the index in the procedure linkage table which
4560 corresponds to this symbol. This is the index of this symbol
4561 in all the symbols for which we are making plt entries. The
4562 first entry in the procedure linkage table is reserved. */
4563 plt_index = ((h->plt.offset - elf_mn10300_sizeof_plt0 (info))
4564 / elf_mn10300_sizeof_plt (info));
4566 /* Get the offset into the .got table of the entry that
4567 corresponds to this function. Each .got entry is 4 bytes.
4568 The first three are reserved. */
4569 got_offset = (plt_index + 3) * 4;
4571 /* Fill in the entry in the procedure linkage table. */
4574 memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry,
4575 elf_mn10300_sizeof_plt (info));
4576 bfd_put_32 (output_bfd,
4577 (sgot->output_section->vma
4578 + sgot->output_offset
4580 (splt->contents + h->plt.offset
4581 + elf_mn10300_plt_symbol_offset (info)));
4583 bfd_put_32 (output_bfd,
4584 (1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)),
4585 (splt->contents + h->plt.offset
4586 + elf_mn10300_plt_plt0_offset (info)));
4590 memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry,
4591 elf_mn10300_sizeof_plt (info));
4593 bfd_put_32 (output_bfd, got_offset,
4594 (splt->contents + h->plt.offset
4595 + elf_mn10300_plt_symbol_offset (info)));
4598 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
4599 (splt->contents + h->plt.offset
4600 + elf_mn10300_plt_reloc_offset (info)));
4602 /* Fill in the entry in the global offset table. */
4603 bfd_put_32 (output_bfd,
4604 (splt->output_section->vma
4605 + splt->output_offset
4607 + elf_mn10300_plt_temp_offset (info)),
4608 sgot->contents + got_offset);
4610 /* Fill in the entry in the .rela.plt section. */
4611 rel.r_offset = (sgot->output_section->vma
4612 + sgot->output_offset
4614 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT);
4616 bfd_elf32_swap_reloca_out (output_bfd, &rel,
4617 (bfd_byte *) ((Elf32_External_Rela *) srel->contents
4620 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4621 /* Mark the symbol as undefined, rather than as defined in
4622 the .plt section. Leave the value alone. */
4623 sym->st_shndx = SHN_UNDEF;
4626 if (h->got.offset != (bfd_vma) -1)
4630 Elf_Internal_Rela rel;
4632 /* This symbol has an entry in the global offset table. Set it up. */
4634 sgot = bfd_get_section_by_name (dynobj, ".got");
4635 srel = bfd_get_section_by_name (dynobj, ".rela.got");
4636 BFD_ASSERT (sgot != NULL && srel != NULL);
4638 rel.r_offset = (sgot->output_section->vma
4639 + sgot->output_offset
4640 + (h->got.offset &~ 1));
4642 /* If this is a -Bsymbolic link, and the symbol is defined
4643 locally, we just want to emit a RELATIVE reloc. Likewise if
4644 the symbol was forced to be local because of a version file.
4645 The entry in the global offset table will already have been
4646 initialized in the relocate_section function. */
4648 && (info->symbolic || h->dynindx == -1)
4649 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
4651 rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
4652 rel.r_addend = (h->root.u.def.value
4653 + h->root.u.def.section->output_section->vma
4654 + h->root.u.def.section->output_offset);
4658 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
4659 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT);
4663 bfd_elf32_swap_reloca_out (output_bfd, &rel,
4664 (bfd_byte *) ((Elf32_External_Rela *) srel->contents
4665 + srel->reloc_count));
4666 ++ srel->reloc_count;
4669 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
4672 Elf_Internal_Rela rel;
4674 /* This symbol needs a copy reloc. Set it up. */
4675 BFD_ASSERT (h->dynindx != -1
4676 && (h->root.type == bfd_link_hash_defined
4677 || h->root.type == bfd_link_hash_defweak));
4679 s = bfd_get_section_by_name (h->root.u.def.section->owner,
4681 BFD_ASSERT (s != NULL);
4683 rel.r_offset = (h->root.u.def.value
4684 + h->root.u.def.section->output_section->vma
4685 + h->root.u.def.section->output_offset);
4686 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY);
4688 bfd_elf32_swap_reloca_out (output_bfd, &rel,
4689 (bfd_byte *) ((Elf32_External_Rela *) s->contents
4694 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4695 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
4696 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4697 sym->st_shndx = SHN_ABS;
4702 /* Finish up the dynamic sections. */
4705 _bfd_mn10300_elf_finish_dynamic_sections (output_bfd, info)
4707 struct bfd_link_info * info;
4713 dynobj = elf_hash_table (info)->dynobj;
4715 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
4716 BFD_ASSERT (sgot != NULL);
4717 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4719 if (elf_hash_table (info)->dynamic_sections_created)
4722 Elf32_External_Dyn * dyncon;
4723 Elf32_External_Dyn * dynconend;
4725 BFD_ASSERT (sdyn != NULL);
4727 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4728 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
4730 for (; dyncon < dynconend; dyncon++)
4732 Elf_Internal_Dyn dyn;
4736 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4750 s = bfd_get_section_by_name (output_bfd, name);
4751 BFD_ASSERT (s != NULL);
4752 dyn.d_un.d_ptr = s->vma;
4753 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4757 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
4758 BFD_ASSERT (s != NULL);
4759 if (s->_cooked_size != 0)
4760 dyn.d_un.d_val = s->_cooked_size;
4762 dyn.d_un.d_val = s->_raw_size;
4763 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4767 /* My reading of the SVR4 ABI indicates that the
4768 procedure linkage table relocs (DT_JMPREL) should be
4769 included in the overall relocs (DT_RELA). This is
4770 what Solaris does. However, UnixWare can not handle
4771 that case. Therefore, we override the DT_RELASZ entry
4772 here to make it not include the JMPREL relocs. Since
4773 the linker script arranges for .rela.plt to follow all
4774 other relocation sections, we don't have to worry
4775 about changing the DT_RELA entry. */
4776 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
4779 if (s->_cooked_size != 0)
4780 dyn.d_un.d_val -= s->_cooked_size;
4782 dyn.d_un.d_val -= s->_raw_size;
4784 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4789 /* Fill in the first entry in the procedure linkage table. */
4790 splt = bfd_get_section_by_name (dynobj, ".plt");
4791 if (splt && splt->_raw_size > 0)
4795 memcpy (splt->contents, elf_mn10300_pic_plt_entry,
4796 elf_mn10300_sizeof_plt (info));
4800 memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE);
4801 bfd_put_32 (output_bfd,
4802 sgot->output_section->vma + sgot->output_offset + 4,
4803 splt->contents + elf_mn10300_plt0_gotid_offset (info));
4804 bfd_put_32 (output_bfd,
4805 sgot->output_section->vma + sgot->output_offset + 8,
4806 splt->contents + elf_mn10300_plt0_linker_offset (info));
4809 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4810 really seem like the right value. */
4811 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
4815 /* Fill in the first three entries in the global offset table. */
4816 if (sgot->_raw_size > 0)
4819 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
4821 bfd_put_32 (output_bfd,
4822 sdyn->output_section->vma + sdyn->output_offset,
4824 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
4825 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
4828 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
4834 #define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec
4835 #define TARGET_LITTLE_NAME "elf32-mn10300"
4836 #define ELF_ARCH bfd_arch_mn10300
4837 #define ELF_MACHINE_CODE EM_MN10300
4838 #define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300
4839 #define ELF_MAXPAGESIZE 0x1000
4842 #define elf_info_to_howto mn10300_info_to_howto
4843 #define elf_info_to_howto_rel 0
4844 #define elf_backend_can_gc_sections 1
4845 #define elf_backend_rela_normal 1
4846 #define elf_backend_check_relocs mn10300_elf_check_relocs
4847 #define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook
4848 #define elf_backend_relocate_section mn10300_elf_relocate_section
4849 #define bfd_elf32_bfd_relax_section mn10300_elf_relax_section
4850 #define bfd_elf32_bfd_get_relocated_section_contents \
4851 mn10300_elf_get_relocated_section_contents
4852 #define bfd_elf32_bfd_link_hash_table_create \
4853 elf32_mn10300_link_hash_table_create
4854 #define bfd_elf32_bfd_link_hash_table_free \
4855 elf32_mn10300_link_hash_table_free
4857 #ifndef elf_symbol_leading_char
4858 #define elf_symbol_leading_char '_'
4861 /* So we can set bits in e_flags. */
4862 #define elf_backend_final_write_processing \
4863 _bfd_mn10300_elf_final_write_processing
4864 #define elf_backend_object_p _bfd_mn10300_elf_object_p
4866 #define bfd_elf32_bfd_merge_private_bfd_data \
4867 _bfd_mn10300_elf_merge_private_bfd_data
4869 #define elf_backend_can_gc_sections 1
4870 #define elf_backend_create_dynamic_sections \
4871 _bfd_mn10300_elf_create_dynamic_sections
4872 #define elf_backend_adjust_dynamic_symbol \
4873 _bfd_mn10300_elf_adjust_dynamic_symbol
4874 #define elf_backend_size_dynamic_sections \
4875 _bfd_mn10300_elf_size_dynamic_sections
4876 #define elf_backend_finish_dynamic_symbol \
4877 _bfd_mn10300_elf_finish_dynamic_symbol
4878 #define elf_backend_finish_dynamic_sections \
4879 _bfd_mn10300_elf_finish_dynamic_sections
4881 #define elf_backend_want_got_plt 1
4882 #define elf_backend_plt_readonly 1
4883 #define elf_backend_want_plt_sym 0
4884 #define elf_backend_got_header_size 12
4886 #include "elf32-target.h"