1 /* Matsushita 10300 specific support for 32-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
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_elf32_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_elf32_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_elf32_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 elf32_mn10300_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 = (struct elf32_mn10300_link_hash_entry **)
1548 (elf_sym_hashes (input_bfd));
1551 relend = relocs + input_section->reloc_count;
1552 for (; rel < relend; rel++)
1555 reloc_howto_type *howto;
1556 unsigned long r_symndx;
1557 Elf_Internal_Sym *sym;
1559 struct elf32_mn10300_link_hash_entry *h;
1561 bfd_reloc_status_type r;
1563 r_symndx = ELF32_R_SYM (rel->r_info);
1564 r_type = ELF32_R_TYPE (rel->r_info);
1565 howto = elf_mn10300_howto_table + r_type;
1567 /* Just skip the vtable gc relocs. */
1568 if (r_type == R_MN10300_GNU_VTINHERIT
1569 || r_type == R_MN10300_GNU_VTENTRY)
1575 if (r_symndx < symtab_hdr->sh_info)
1577 sym = local_syms + r_symndx;
1578 sec = local_sections[r_symndx];
1579 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1583 bfd_boolean unresolved_reloc;
1585 struct elf_link_hash_entry *hh;
1587 RELOC_FOR_GLOBAL_SYMBOL (hh, (struct elf_link_hash_entry *) sym_hashes,
1588 r_symndx, symtab_hdr, relocation,
1589 sec, unresolved_reloc, info,
1592 h = (struct elf32_mn10300_link_hash_entry *) hh;
1594 if ((h->root.root.type == bfd_link_hash_defined
1595 || h->root.root.type == bfd_link_hash_defweak)
1596 && ( r_type == R_MN10300_GOTPC32
1597 || r_type == R_MN10300_GOTPC16
1598 || (( r_type == R_MN10300_PLT32
1599 || r_type == R_MN10300_PLT16)
1600 && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
1601 && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
1602 && h->root.plt.offset != (bfd_vma) -1)
1603 || (( r_type == R_MN10300_GOT32
1604 || r_type == R_MN10300_GOT24
1605 || r_type == R_MN10300_GOT16)
1606 && elf_hash_table (info)->dynamic_sections_created
1608 || (! info->symbolic && h->root.dynindx != -1)
1609 || (h->root.elf_link_hash_flags
1610 & ELF_LINK_HASH_DEF_REGULAR) == 0))
1612 && ((! info->symbolic && h->root.dynindx != -1)
1613 || (h->root.elf_link_hash_flags
1614 & ELF_LINK_HASH_DEF_REGULAR) == 0)
1615 && ( r_type == R_MN10300_32
1616 || r_type == R_MN10300_PCREL32)
1617 && ((input_section->flags & SEC_ALLOC) != 0
1618 /* DWARF will emit R_MN10300_32 relocations
1619 in its sections against symbols defined
1620 externally in shared libraries. We can't
1621 do anything with them here. */
1622 || ((input_section->flags & SEC_DEBUGGING) != 0
1623 && (h->root.elf_link_hash_flags
1624 & ELF_LINK_HASH_DEF_DYNAMIC) != 0)))))
1625 /* In these cases, we don't need the relocation
1626 value. We check specially because in some
1627 obscure cases sec->output_section will be NULL. */
1630 else if (unresolved_reloc)
1631 (*_bfd_error_handler)
1632 (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"),
1633 bfd_get_filename (input_bfd), h->root.root.root.string,
1634 bfd_get_section_name (input_bfd, input_section));
1637 r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd,
1639 contents, rel->r_offset,
1640 relocation, rel->r_addend,
1641 (struct elf_link_hash_entry *)h,
1643 info, sec, h == NULL);
1645 if (r != bfd_reloc_ok)
1648 const char *msg = (const char *) 0;
1651 name = h->root.root.root.string;
1654 name = (bfd_elf_string_from_elf_section
1655 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1656 if (name == NULL || *name == '\0')
1657 name = bfd_section_name (input_bfd, sec);
1662 case bfd_reloc_overflow:
1663 if (! ((*info->callbacks->reloc_overflow)
1664 (info, name, howto->name, (bfd_vma) 0,
1665 input_bfd, input_section, rel->r_offset)))
1669 case bfd_reloc_undefined:
1670 if (! ((*info->callbacks->undefined_symbol)
1671 (info, name, input_bfd, input_section,
1672 rel->r_offset, TRUE)))
1676 case bfd_reloc_outofrange:
1677 msg = _("internal error: out of range error");
1680 case bfd_reloc_notsupported:
1681 msg = _("internal error: unsupported relocation error");
1684 case bfd_reloc_dangerous:
1685 msg = _("internal error: dangerous error");
1689 msg = _("internal error: unknown error");
1693 if (!((*info->callbacks->warning)
1694 (info, msg, name, input_bfd, input_section,
1705 /* Finish initializing one hash table entry. */
1707 elf32_mn10300_finish_hash_table_entry (gen_entry, in_args)
1708 struct bfd_hash_entry *gen_entry;
1709 PTR in_args ATTRIBUTE_UNUSED;
1711 struct elf32_mn10300_link_hash_entry *entry;
1712 unsigned int byte_count = 0;
1714 entry = (struct elf32_mn10300_link_hash_entry *) gen_entry;
1716 if (entry->root.root.type == bfd_link_hash_warning)
1717 entry = (struct elf32_mn10300_link_hash_entry *) entry->root.root.u.i.link;
1719 /* If we already know we want to convert "call" to "calls" for calls
1720 to this symbol, then return now. */
1721 if (entry->flags == MN10300_CONVERT_CALL_TO_CALLS)
1724 /* If there are no named calls to this symbol, or there's nothing we
1725 can move from the function itself into the "call" instruction, then
1726 note that all "call" instructions should be converted into "calls"
1727 instructions and return. */
1728 if (entry->direct_calls == 0
1729 || (entry->stack_size == 0 && entry->movm_args == 0))
1731 /* Make a note that we should convert "call" instructions to "calls"
1732 instructions for calls to this symbol. */
1733 entry->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1737 /* We may be able to move some instructions from the function itself into
1738 the "call" instruction. Count how many bytes we might be able to
1739 eliminate in the function itself. */
1741 /* A movm instruction is two bytes. */
1742 if (entry->movm_args)
1745 /* Count the insn to allocate stack space too. */
1746 if (entry->stack_size > 0)
1748 if (entry->stack_size <= 128)
1754 /* If using "call" will result in larger code, then turn all
1755 the associated "call" instructions into "calls" instructions. */
1756 if (byte_count < entry->direct_calls)
1757 entry->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1759 /* This routine never fails. */
1763 /* This function handles relaxing for the mn10300.
1765 There are quite a few relaxing opportunities available on the mn10300:
1767 * calls:32 -> calls:16 2 bytes
1768 * call:32 -> call:16 2 bytes
1770 * call:32 -> calls:32 1 byte
1771 * call:16 -> calls:16 1 byte
1772 * These are done anytime using "calls" would result
1773 in smaller code, or when necessary to preserve the
1774 meaning of the program.
1778 * In some circumstances we can move instructions
1779 from a function prologue into a "call" instruction.
1780 This is only done if the resulting code is no larger
1781 than the original code.
1783 * jmp:32 -> jmp:16 2 bytes
1784 * jmp:16 -> bra:8 1 byte
1786 * If the previous instruction is a conditional branch
1787 around the jump/bra, we may be able to reverse its condition
1788 and change its target to the jump's target. The jump/bra
1789 can then be deleted. 2 bytes
1791 * mov abs32 -> mov abs16 1 or 2 bytes
1793 * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes
1794 - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes
1796 * Most instructions which accept d32 can relax to d16 1 or 2 bytes
1797 - Most instructions which accept d16 can relax to d8 1 or 2 bytes
1799 We don't handle imm16->imm8 or d16->d8 as they're very rare
1800 and somewhat more difficult to support. */
1803 mn10300_elf_relax_section (abfd, sec, link_info, again)
1806 struct bfd_link_info *link_info;
1809 Elf_Internal_Shdr *symtab_hdr;
1810 Elf_Internal_Rela *internal_relocs = NULL;
1811 Elf_Internal_Rela *irel, *irelend;
1812 bfd_byte *contents = NULL;
1813 Elf_Internal_Sym *isymbuf = NULL;
1814 struct elf32_mn10300_link_hash_table *hash_table;
1815 asection *section = sec;
1817 /* Assume nothing changes. */
1820 /* We need a pointer to the mn10300 specific hash table. */
1821 hash_table = elf32_mn10300_hash_table (link_info);
1823 /* Initialize fields in each hash table entry the first time through. */
1824 if ((hash_table->flags & MN10300_HASH_ENTRIES_INITIALIZED) == 0)
1828 /* Iterate over all the input bfds. */
1829 for (input_bfd = link_info->input_bfds;
1831 input_bfd = input_bfd->link_next)
1833 /* We're going to need all the symbols for each bfd. */
1834 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1835 if (symtab_hdr->sh_info != 0)
1837 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1838 if (isymbuf == NULL)
1839 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
1840 symtab_hdr->sh_info, 0,
1842 if (isymbuf == NULL)
1846 /* Iterate over each section in this bfd. */
1847 for (section = input_bfd->sections;
1849 section = section->next)
1851 struct elf32_mn10300_link_hash_entry *hash;
1852 Elf_Internal_Sym *sym;
1853 asection *sym_sec = NULL;
1854 const char *sym_name;
1857 /* If there's nothing to do in this section, skip it. */
1858 if (! (((section->flags & SEC_RELOC) != 0
1859 && section->reloc_count != 0)
1860 || (section->flags & SEC_CODE) != 0))
1863 /* Get cached copy of section contents if it exists. */
1864 if (elf_section_data (section)->this_hdr.contents != NULL)
1865 contents = elf_section_data (section)->this_hdr.contents;
1866 else if (section->_raw_size != 0)
1868 /* Go get them off disk. */
1869 contents = (bfd_byte *) bfd_malloc (section->_raw_size);
1870 if (contents == NULL)
1873 if (!bfd_get_section_contents (input_bfd, section,
1874 contents, (file_ptr) 0,
1875 section->_raw_size))
1881 /* If there aren't any relocs, then there's nothing to do. */
1882 if ((section->flags & SEC_RELOC) != 0
1883 && section->reloc_count != 0)
1886 /* Get a copy of the native relocations. */
1887 internal_relocs = (_bfd_elf_link_read_relocs
1888 (input_bfd, section, (PTR) NULL,
1889 (Elf_Internal_Rela *) NULL,
1890 link_info->keep_memory));
1891 if (internal_relocs == NULL)
1894 /* Now examine each relocation. */
1895 irel = internal_relocs;
1896 irelend = irel + section->reloc_count;
1897 for (; irel < irelend; irel++)
1900 unsigned long r_index;
1903 r_type = ELF32_R_TYPE (irel->r_info);
1904 r_index = ELF32_R_SYM (irel->r_info);
1906 if (r_type < 0 || r_type >= (int) R_MN10300_MAX)
1909 /* We need the name and hash table entry of the target
1915 if (r_index < symtab_hdr->sh_info)
1917 /* A local symbol. */
1918 Elf_Internal_Sym *isym;
1919 struct elf_link_hash_table *elftab;
1922 isym = isymbuf + r_index;
1923 if (isym->st_shndx == SHN_UNDEF)
1924 sym_sec = bfd_und_section_ptr;
1925 else if (isym->st_shndx == SHN_ABS)
1926 sym_sec = bfd_abs_section_ptr;
1927 else if (isym->st_shndx == SHN_COMMON)
1928 sym_sec = bfd_com_section_ptr;
1931 = bfd_section_from_elf_index (input_bfd,
1935 = bfd_elf_string_from_elf_section (input_bfd,
1940 /* If it isn't a function, then we don't care
1942 if (ELF_ST_TYPE (isym->st_info) != STT_FUNC)
1945 /* Tack on an ID so we can uniquely identify this
1946 local symbol in the global hash table. */
1947 amt = strlen (sym_name) + 10;
1948 new_name = bfd_malloc (amt);
1952 sprintf (new_name, "%s_%08x",
1953 sym_name, (int) sym_sec);
1954 sym_name = new_name;
1956 elftab = &hash_table->static_hash_table->root;
1957 hash = ((struct elf32_mn10300_link_hash_entry *)
1958 elf_link_hash_lookup (elftab, sym_name,
1959 TRUE, TRUE, FALSE));
1964 r_index -= symtab_hdr->sh_info;
1965 hash = (struct elf32_mn10300_link_hash_entry *)
1966 elf_sym_hashes (input_bfd)[r_index];
1969 /* If this is not a "call" instruction, then we
1970 should convert "call" instructions to "calls"
1972 code = bfd_get_8 (input_bfd,
1973 contents + irel->r_offset - 1);
1974 if (code != 0xdd && code != 0xcd)
1975 hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1977 /* If this is a jump/call, then bump the
1978 direct_calls counter. Else force "call" to
1979 "calls" conversions. */
1980 if (r_type == R_MN10300_PCREL32
1981 || r_type == R_MN10300_PLT32
1982 || r_type == R_MN10300_PLT16
1983 || r_type == R_MN10300_PCREL16)
1984 hash->direct_calls++;
1986 hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1990 /* Now look at the actual contents to get the stack size,
1991 and a list of what registers were saved in the prologue
1993 if ((section->flags & SEC_CODE) != 0)
1995 Elf_Internal_Sym *isym, *isymend;
1996 unsigned int sec_shndx;
1997 struct elf_link_hash_entry **hashes;
1998 struct elf_link_hash_entry **end_hashes;
1999 unsigned int symcount;
2001 sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
2004 /* Look at each function defined in this section and
2005 update info for that function. */
2006 isymend = isymbuf + symtab_hdr->sh_info;
2007 for (isym = isymbuf; isym < isymend; isym++)
2009 if (isym->st_shndx == sec_shndx
2010 && ELF_ST_TYPE (isym->st_info) == STT_FUNC)
2012 struct elf_link_hash_table *elftab;
2015 if (isym->st_shndx == SHN_UNDEF)
2016 sym_sec = bfd_und_section_ptr;
2017 else if (isym->st_shndx == SHN_ABS)
2018 sym_sec = bfd_abs_section_ptr;
2019 else if (isym->st_shndx == SHN_COMMON)
2020 sym_sec = bfd_com_section_ptr;
2023 = bfd_section_from_elf_index (input_bfd,
2026 sym_name = (bfd_elf_string_from_elf_section
2027 (input_bfd, symtab_hdr->sh_link,
2030 /* Tack on an ID so we can uniquely identify this
2031 local symbol in the global hash table. */
2032 amt = strlen (sym_name) + 10;
2033 new_name = bfd_malloc (amt);
2037 sprintf (new_name, "%s_%08x",
2038 sym_name, (int) sym_sec);
2039 sym_name = new_name;
2041 elftab = &hash_table->static_hash_table->root;
2042 hash = ((struct elf32_mn10300_link_hash_entry *)
2043 elf_link_hash_lookup (elftab, sym_name,
2044 TRUE, TRUE, FALSE));
2046 compute_function_info (input_bfd, hash,
2047 isym->st_value, contents);
2051 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2052 - symtab_hdr->sh_info);
2053 hashes = elf_sym_hashes (input_bfd);
2054 end_hashes = hashes + symcount;
2055 for (; hashes < end_hashes; hashes++)
2057 hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
2058 if ((hash->root.root.type == bfd_link_hash_defined
2059 || hash->root.root.type == bfd_link_hash_defweak)
2060 && hash->root.root.u.def.section == section
2061 && ELF_ST_TYPE (isym->st_info) == STT_FUNC)
2062 compute_function_info (input_bfd, hash,
2063 (hash)->root.root.u.def.value,
2068 /* Cache or free any memory we allocated for the relocs. */
2069 if (internal_relocs != NULL
2070 && elf_section_data (section)->relocs != internal_relocs)
2071 free (internal_relocs);
2072 internal_relocs = NULL;
2074 /* Cache or free any memory we allocated for the contents. */
2075 if (contents != NULL
2076 && elf_section_data (section)->this_hdr.contents != contents)
2078 if (! link_info->keep_memory)
2082 /* Cache the section contents for elf_link_input_bfd. */
2083 elf_section_data (section)->this_hdr.contents = contents;
2089 /* Cache or free any memory we allocated for the symbols. */
2091 && symtab_hdr->contents != (unsigned char *) isymbuf)
2093 if (! link_info->keep_memory)
2097 /* Cache the symbols for elf_link_input_bfd. */
2098 symtab_hdr->contents = (unsigned char *) isymbuf;
2104 /* Now iterate on each symbol in the hash table and perform
2105 the final initialization steps on each. */
2106 elf32_mn10300_link_hash_traverse (hash_table,
2107 elf32_mn10300_finish_hash_table_entry,
2109 elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
2110 elf32_mn10300_finish_hash_table_entry,
2113 /* All entries in the hash table are fully initialized. */
2114 hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED;
2116 /* Now that everything has been initialized, go through each
2117 code section and delete any prologue insns which will be
2118 redundant because their operations will be performed by
2119 a "call" instruction. */
2120 for (input_bfd = link_info->input_bfds;
2122 input_bfd = input_bfd->link_next)
2124 /* We're going to need all the local symbols for each bfd. */
2125 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2126 if (symtab_hdr->sh_info != 0)
2128 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2129 if (isymbuf == NULL)
2130 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2131 symtab_hdr->sh_info, 0,
2133 if (isymbuf == NULL)
2137 /* Walk over each section in this bfd. */
2138 for (section = input_bfd->sections;
2140 section = section->next)
2142 unsigned int sec_shndx;
2143 Elf_Internal_Sym *isym, *isymend;
2144 struct elf_link_hash_entry **hashes;
2145 struct elf_link_hash_entry **end_hashes;
2146 unsigned int symcount;
2148 /* Skip non-code sections and empty sections. */
2149 if ((section->flags & SEC_CODE) == 0 || section->_raw_size == 0)
2152 if (section->reloc_count != 0)
2154 /* Get a copy of the native relocations. */
2155 internal_relocs = (_bfd_elf_link_read_relocs
2156 (input_bfd, section, (PTR) NULL,
2157 (Elf_Internal_Rela *) NULL,
2158 link_info->keep_memory));
2159 if (internal_relocs == NULL)
2163 /* Get cached copy of section contents if it exists. */
2164 if (elf_section_data (section)->this_hdr.contents != NULL)
2165 contents = elf_section_data (section)->this_hdr.contents;
2168 /* Go get them off disk. */
2169 contents = (bfd_byte *) bfd_malloc (section->_raw_size);
2170 if (contents == NULL)
2173 if (!bfd_get_section_contents (input_bfd, section,
2174 contents, (file_ptr) 0,
2175 section->_raw_size))
2179 sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
2182 /* Now look for any function in this section which needs
2183 insns deleted from its prologue. */
2184 isymend = isymbuf + symtab_hdr->sh_info;
2185 for (isym = isymbuf; isym < isymend; isym++)
2187 struct elf32_mn10300_link_hash_entry *sym_hash;
2188 asection *sym_sec = NULL;
2189 const char *sym_name;
2191 struct elf_link_hash_table *elftab;
2194 if (isym->st_shndx != sec_shndx)
2197 if (isym->st_shndx == SHN_UNDEF)
2198 sym_sec = bfd_und_section_ptr;
2199 else if (isym->st_shndx == SHN_ABS)
2200 sym_sec = bfd_abs_section_ptr;
2201 else if (isym->st_shndx == SHN_COMMON)
2202 sym_sec = bfd_com_section_ptr;
2205 = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
2208 = bfd_elf_string_from_elf_section (input_bfd,
2209 symtab_hdr->sh_link,
2212 /* Tack on an ID so we can uniquely identify this
2213 local symbol in the global hash table. */
2214 amt = strlen (sym_name) + 10;
2215 new_name = bfd_malloc (amt);
2218 sprintf (new_name, "%s_%08x", sym_name, (int) sym_sec);
2219 sym_name = new_name;
2221 elftab = &hash_table->static_hash_table->root;
2222 sym_hash = ((struct elf32_mn10300_link_hash_entry *)
2223 elf_link_hash_lookup (elftab, sym_name,
2224 FALSE, FALSE, FALSE));
2227 if (sym_hash == NULL)
2230 if (! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
2231 && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
2235 /* Note that we've changed things. */
2236 elf_section_data (section)->relocs = internal_relocs;
2237 elf_section_data (section)->this_hdr.contents = contents;
2238 symtab_hdr->contents = (unsigned char *) isymbuf;
2240 /* Count how many bytes we're going to delete. */
2241 if (sym_hash->movm_args)
2244 if (sym_hash->stack_size > 0)
2246 if (sym_hash->stack_size <= 128)
2252 /* Note that we've deleted prologue bytes for this
2254 sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
2256 /* Actually delete the bytes. */
2257 if (!mn10300_elf_relax_delete_bytes (input_bfd,
2263 /* Something changed. Not strictly necessary, but
2264 may lead to more relaxing opportunities. */
2269 /* Look for any global functions in this section which
2270 need insns deleted from their prologues. */
2271 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2272 - symtab_hdr->sh_info);
2273 hashes = elf_sym_hashes (input_bfd);
2274 end_hashes = hashes + symcount;
2275 for (; hashes < end_hashes; hashes++)
2277 struct elf32_mn10300_link_hash_entry *sym_hash;
2279 sym_hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
2280 if ((sym_hash->root.root.type == bfd_link_hash_defined
2281 || sym_hash->root.root.type == bfd_link_hash_defweak)
2282 && sym_hash->root.root.u.def.section == section
2283 && ! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
2284 && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
2289 /* Note that we've changed things. */
2290 elf_section_data (section)->relocs = internal_relocs;
2291 elf_section_data (section)->this_hdr.contents = contents;
2292 symtab_hdr->contents = (unsigned char *) isymbuf;
2294 /* Count how many bytes we're going to delete. */
2295 if (sym_hash->movm_args)
2298 if (sym_hash->stack_size > 0)
2300 if (sym_hash->stack_size <= 128)
2306 /* Note that we've deleted prologue bytes for this
2308 sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
2310 /* Actually delete the bytes. */
2311 symval = sym_hash->root.root.u.def.value;
2312 if (!mn10300_elf_relax_delete_bytes (input_bfd,
2318 /* Something changed. Not strictly necessary, but
2319 may lead to more relaxing opportunities. */
2324 /* Cache or free any memory we allocated for the relocs. */
2325 if (internal_relocs != NULL
2326 && elf_section_data (section)->relocs != internal_relocs)
2327 free (internal_relocs);
2328 internal_relocs = NULL;
2330 /* Cache or free any memory we allocated for the contents. */
2331 if (contents != NULL
2332 && elf_section_data (section)->this_hdr.contents != contents)
2334 if (! link_info->keep_memory)
2338 /* Cache the section contents for elf_link_input_bfd. */
2339 elf_section_data (section)->this_hdr.contents = contents;
2345 /* Cache or free any memory we allocated for the symbols. */
2347 && symtab_hdr->contents != (unsigned char *) isymbuf)
2349 if (! link_info->keep_memory)
2353 /* Cache the symbols for elf_link_input_bfd. */
2354 symtab_hdr->contents = (unsigned char *) isymbuf;
2361 /* (Re)initialize for the basic instruction shortening/relaxing pass. */
2363 internal_relocs = NULL;
2365 /* For error_return. */
2368 /* We don't have to do anything for a relocatable link, if
2369 this section does not have relocs, or if this is not a
2371 if (link_info->relocatable
2372 || (sec->flags & SEC_RELOC) == 0
2373 || sec->reloc_count == 0
2374 || (sec->flags & SEC_CODE) == 0)
2377 /* If this is the first time we have been called for this section,
2378 initialize the cooked size. */
2379 if (sec->_cooked_size == 0)
2380 sec->_cooked_size = sec->_raw_size;
2382 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2384 /* Get a copy of the native relocations. */
2385 internal_relocs = (_bfd_elf_link_read_relocs
2386 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
2387 link_info->keep_memory));
2388 if (internal_relocs == NULL)
2391 /* Walk through them looking for relaxing opportunities. */
2392 irelend = internal_relocs + sec->reloc_count;
2393 for (irel = internal_relocs; irel < irelend; irel++)
2396 struct elf32_mn10300_link_hash_entry *h = NULL;
2398 /* If this isn't something that can be relaxed, then ignore
2400 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_NONE
2401 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8
2402 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_MAX)
2405 /* Get the section contents if we haven't done so already. */
2406 if (contents == NULL)
2408 /* Get cached copy if it exists. */
2409 if (elf_section_data (sec)->this_hdr.contents != NULL)
2410 contents = elf_section_data (sec)->this_hdr.contents;
2413 /* Go get them off disk. */
2414 contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
2415 if (contents == NULL)
2418 if (! bfd_get_section_contents (abfd, sec, contents,
2419 (file_ptr) 0, sec->_raw_size))
2424 /* Read this BFD's symbols if we haven't done so already. */
2425 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
2427 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2428 if (isymbuf == NULL)
2429 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
2430 symtab_hdr->sh_info, 0,
2432 if (isymbuf == NULL)
2436 /* Get the value of the symbol referred to by the reloc. */
2437 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
2439 Elf_Internal_Sym *isym;
2440 asection *sym_sec = NULL;
2441 const char *sym_name;
2444 /* A local symbol. */
2445 isym = isymbuf + ELF32_R_SYM (irel->r_info);
2446 if (isym->st_shndx == SHN_UNDEF)
2447 sym_sec = bfd_und_section_ptr;
2448 else if (isym->st_shndx == SHN_ABS)
2449 sym_sec = bfd_abs_section_ptr;
2450 else if (isym->st_shndx == SHN_COMMON)
2451 sym_sec = bfd_com_section_ptr;
2453 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2455 symval = (isym->st_value
2456 + sym_sec->output_section->vma
2457 + sym_sec->output_offset);
2458 sym_name = bfd_elf_string_from_elf_section (abfd,
2459 symtab_hdr->sh_link,
2462 /* Tack on an ID so we can uniquely identify this
2463 local symbol in the global hash table. */
2464 new_name = bfd_malloc ((bfd_size_type) strlen (sym_name) + 10);
2467 sprintf (new_name, "%s_%08x", sym_name, (int) sym_sec);
2468 sym_name = new_name;
2470 h = (struct elf32_mn10300_link_hash_entry *)
2471 elf_link_hash_lookup (&hash_table->static_hash_table->root,
2472 sym_name, FALSE, FALSE, FALSE);
2479 /* An external symbol. */
2480 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2481 h = (struct elf32_mn10300_link_hash_entry *)
2482 (elf_sym_hashes (abfd)[indx]);
2483 BFD_ASSERT (h != NULL);
2484 if (h->root.root.type != bfd_link_hash_defined
2485 && h->root.root.type != bfd_link_hash_defweak)
2487 /* This appears to be a reference to an undefined
2488 symbol. Just ignore it--it will be caught by the
2489 regular reloc processing. */
2493 symval = (h->root.root.u.def.value
2494 + h->root.root.u.def.section->output_section->vma
2495 + h->root.root.u.def.section->output_offset);
2498 /* For simplicity of coding, we are going to modify the section
2499 contents, the section relocs, and the BFD symbol table. We
2500 must tell the rest of the code not to free up this
2501 information. It would be possible to instead create a table
2502 of changes which have to be made, as is done in coff-mips.c;
2503 that would be more work, but would require less memory when
2504 the linker is run. */
2506 /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative
2507 branch/call, also deal with "call" -> "calls" conversions and
2508 insertion of prologue data into "call" instructions. */
2509 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32
2510 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32)
2512 bfd_vma value = symval;
2514 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32
2516 && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
2517 && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
2518 && h->root.plt.offset != (bfd_vma) -1)
2522 splt = bfd_get_section_by_name (elf_hash_table (link_info)
2525 value = ((splt->output_section->vma
2526 + splt->output_offset
2527 + h->root.plt.offset)
2528 - (sec->output_section->vma
2529 + sec->output_offset
2533 /* If we've got a "call" instruction that needs to be turned
2534 into a "calls" instruction, do so now. It saves a byte. */
2535 if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
2539 /* Get the opcode. */
2540 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2542 /* Make sure we're working with a "call" instruction! */
2545 /* Note that we've changed the relocs, section contents,
2547 elf_section_data (sec)->relocs = internal_relocs;
2548 elf_section_data (sec)->this_hdr.contents = contents;
2549 symtab_hdr->contents = (unsigned char *) isymbuf;
2551 /* Fix the opcode. */
2552 bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1);
2553 bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
2555 /* Fix irel->r_offset and irel->r_addend. */
2556 irel->r_offset += 1;
2557 irel->r_addend += 1;
2559 /* Delete one byte of data. */
2560 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2561 irel->r_offset + 3, 1))
2564 /* That will change things, so, we should relax again.
2565 Note that this is not required, and it may be slow. */
2571 /* We've got a "call" instruction which needs some data
2572 from target function filled in. */
2575 /* Get the opcode. */
2576 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2578 /* Insert data from the target function into the "call"
2579 instruction if needed. */
2582 bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 4);
2583 bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
2584 contents + irel->r_offset + 5);
2588 /* Deal with pc-relative gunk. */
2589 value -= (sec->output_section->vma + sec->output_offset);
2590 value -= irel->r_offset;
2591 value += irel->r_addend;
2593 /* See if the value will fit in 16 bits, note the high value is
2594 0x7fff + 2 as the target will be two bytes closer if we are
2596 if ((long) value < 0x8001 && (long) value > -0x8000)
2600 /* Get the opcode. */
2601 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2603 if (code != 0xdc && code != 0xdd && code != 0xff)
2606 /* Note that we've changed the relocs, section contents, etc. */
2607 elf_section_data (sec)->relocs = internal_relocs;
2608 elf_section_data (sec)->this_hdr.contents = contents;
2609 symtab_hdr->contents = (unsigned char *) isymbuf;
2611 /* Fix the opcode. */
2613 bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1);
2614 else if (code == 0xdd)
2615 bfd_put_8 (abfd, 0xcd, contents + irel->r_offset - 1);
2616 else if (code == 0xff)
2617 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
2619 /* Fix the relocation's type. */
2620 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2621 (ELF32_R_TYPE (irel->r_info)
2622 == (int) R_MN10300_PLT32)
2626 /* Delete two bytes of data. */
2627 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2628 irel->r_offset + 1, 2))
2631 /* That will change things, so, we should relax again.
2632 Note that this is not required, and it may be slow. */
2637 /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative
2639 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL16)
2641 bfd_vma value = symval;
2643 /* If we've got a "call" instruction that needs to be turned
2644 into a "calls" instruction, do so now. It saves a byte. */
2645 if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
2649 /* Get the opcode. */
2650 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2652 /* Make sure we're working with a "call" instruction! */
2655 /* Note that we've changed the relocs, section contents,
2657 elf_section_data (sec)->relocs = internal_relocs;
2658 elf_section_data (sec)->this_hdr.contents = contents;
2659 symtab_hdr->contents = (unsigned char *) isymbuf;
2661 /* Fix the opcode. */
2662 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1);
2663 bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
2665 /* Fix irel->r_offset and irel->r_addend. */
2666 irel->r_offset += 1;
2667 irel->r_addend += 1;
2669 /* Delete one byte of data. */
2670 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2671 irel->r_offset + 1, 1))
2674 /* That will change things, so, we should relax again.
2675 Note that this is not required, and it may be slow. */
2683 /* Get the opcode. */
2684 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2686 /* Insert data from the target function into the "call"
2687 instruction if needed. */
2690 bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 2);
2691 bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
2692 contents + irel->r_offset + 3);
2696 /* Deal with pc-relative gunk. */
2697 value -= (sec->output_section->vma + sec->output_offset);
2698 value -= irel->r_offset;
2699 value += irel->r_addend;
2701 /* See if the value will fit in 8 bits, note the high value is
2702 0x7f + 1 as the target will be one bytes closer if we are
2704 if ((long) value < 0x80 && (long) value > -0x80)
2708 /* Get the opcode. */
2709 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2714 /* Note that we've changed the relocs, section contents, etc. */
2715 elf_section_data (sec)->relocs = internal_relocs;
2716 elf_section_data (sec)->this_hdr.contents = contents;
2717 symtab_hdr->contents = (unsigned char *) isymbuf;
2719 /* Fix the opcode. */
2720 bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1);
2722 /* Fix the relocation's type. */
2723 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2726 /* Delete one byte of data. */
2727 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2728 irel->r_offset + 1, 1))
2731 /* That will change things, so, we should relax again.
2732 Note that this is not required, and it may be slow. */
2737 /* Try to eliminate an unconditional 8 bit pc-relative branch
2738 which immediately follows a conditional 8 bit pc-relative
2739 branch around the unconditional branch.
2746 This happens when the bCC can't reach lab2 at assembly time,
2747 but due to other relaxations it can reach at link time. */
2748 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8)
2750 Elf_Internal_Rela *nrel;
2751 bfd_vma value = symval;
2754 /* Deal with pc-relative gunk. */
2755 value -= (sec->output_section->vma + sec->output_offset);
2756 value -= irel->r_offset;
2757 value += irel->r_addend;
2759 /* Do nothing if this reloc is the last byte in the section. */
2760 if (irel->r_offset == sec->_cooked_size)
2763 /* See if the next instruction is an unconditional pc-relative
2764 branch, more often than not this test will fail, so we
2765 test it first to speed things up. */
2766 code = bfd_get_8 (abfd, contents + irel->r_offset + 1);
2770 /* Also make sure the next relocation applies to the next
2771 instruction and that it's a pc-relative 8 bit branch. */
2774 || irel->r_offset + 2 != nrel->r_offset
2775 || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10300_PCREL8)
2778 /* Make sure our destination immediately follows the
2779 unconditional branch. */
2780 if (symval != (sec->output_section->vma + sec->output_offset
2781 + irel->r_offset + 3))
2784 /* Now make sure we are a conditional branch. This may not
2785 be necessary, but why take the chance.
2787 Note these checks assume that R_MN10300_PCREL8 relocs
2788 only occur on bCC and bCCx insns. If they occured
2789 elsewhere, we'd need to know the start of this insn
2790 for this check to be accurate. */
2791 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2792 if (code != 0xc0 && code != 0xc1 && code != 0xc2
2793 && code != 0xc3 && code != 0xc4 && code != 0xc5
2794 && code != 0xc6 && code != 0xc7 && code != 0xc8
2795 && code != 0xc9 && code != 0xe8 && code != 0xe9
2796 && code != 0xea && code != 0xeb)
2799 /* We also have to be sure there is no symbol/label
2800 at the unconditional branch. */
2801 if (mn10300_elf_symbol_address_p (abfd, sec, isymbuf,
2802 irel->r_offset + 1))
2805 /* Note that we've changed the relocs, section contents, etc. */
2806 elf_section_data (sec)->relocs = internal_relocs;
2807 elf_section_data (sec)->this_hdr.contents = contents;
2808 symtab_hdr->contents = (unsigned char *) isymbuf;
2810 /* Reverse the condition of the first branch. */
2856 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
2858 /* Set the reloc type and symbol for the first branch
2859 from the second branch. */
2860 irel->r_info = nrel->r_info;
2862 /* Make the reloc for the second branch a null reloc. */
2863 nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info),
2866 /* Delete two bytes of data. */
2867 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2868 irel->r_offset + 1, 2))
2871 /* That will change things, so, we should relax again.
2872 Note that this is not required, and it may be slow. */
2876 /* Try to turn a 24 immediate, displacement or absolute address
2877 into a 8 immediate, displacement or absolute address. */
2878 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_24)
2880 bfd_vma value = symval;
2881 value += irel->r_addend;
2883 /* See if the value will fit in 8 bits. */
2884 if ((long) value < 0x7f && (long) value > -0x80)
2888 /* AM33 insns which have 24 operands are 6 bytes long and
2889 will have 0xfd as the first byte. */
2891 /* Get the first opcode. */
2892 code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
2896 /* Get the second opcode. */
2897 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
2899 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
2900 equivalent instructions exists. */
2901 if (code != 0x6b && code != 0x7b
2902 && code != 0x8b && code != 0x9b
2903 && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
2904 || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
2905 || (code & 0x0f) == 0x0e))
2907 /* Not safe if the high bit is on as relaxing may
2908 move the value out of high mem and thus not fit
2909 in a signed 8bit value. This is currently over
2911 if ((value & 0x80) == 0)
2913 /* Note that we've changed the relocation contents,
2915 elf_section_data (sec)->relocs = internal_relocs;
2916 elf_section_data (sec)->this_hdr.contents = contents;
2917 symtab_hdr->contents = (unsigned char *) isymbuf;
2919 /* Fix the opcode. */
2920 bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3);
2921 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
2923 /* Fix the relocation's type. */
2925 ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2928 /* Delete two bytes of data. */
2929 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2930 irel->r_offset + 1, 2))
2933 /* That will change things, so, we should relax
2934 again. Note that this is not required, and it
2944 /* Try to turn a 32bit immediate, displacement or absolute address
2945 into a 16bit immediate, displacement or absolute address. */
2946 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32
2947 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32
2948 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32
2949 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32)
2951 bfd_vma value = symval;
2953 if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32)
2957 sgot = bfd_get_section_by_name (elf_hash_table (link_info)
2960 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32)
2962 value = sgot->output_offset;
2965 value += h->root.got.offset;
2967 value += (elf_local_got_offsets
2968 (abfd)[ELF32_R_SYM (irel->r_info)]);
2970 else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32)
2971 value -= sgot->output_section->vma;
2972 else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32)
2973 value = (sgot->output_section->vma
2974 - (sec->output_section->vma
2975 + sec->output_offset
2981 value += irel->r_addend;
2983 /* See if the value will fit in 24 bits.
2984 We allow any 16bit match here. We prune those we can't
2986 if ((long) value < 0x7fffff && (long) value > -0x800000)
2990 /* AM33 insns which have 32bit operands are 7 bytes long and
2991 will have 0xfe as the first byte. */
2993 /* Get the first opcode. */
2994 code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
2998 /* Get the second opcode. */
2999 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
3001 /* All the am33 32 -> 24 relaxing possibilities. */
3002 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
3003 equivalent instructions exists. */
3004 if (code != 0x6b && code != 0x7b
3005 && code != 0x8b && code != 0x9b
3006 && (ELF32_R_TYPE (irel->r_info)
3007 != (int) R_MN10300_GOTPC32)
3008 && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
3009 || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
3010 || (code & 0x0f) == 0x0e))
3012 /* Not safe if the high bit is on as relaxing may
3013 move the value out of high mem and thus not fit
3014 in a signed 16bit value. This is currently over
3016 if ((value & 0x8000) == 0)
3018 /* Note that we've changed the relocation contents,
3020 elf_section_data (sec)->relocs = internal_relocs;
3021 elf_section_data (sec)->this_hdr.contents = contents;
3022 symtab_hdr->contents = (unsigned char *) isymbuf;
3024 /* Fix the opcode. */
3025 bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3);
3026 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3028 /* Fix the relocation's type. */
3030 ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3031 (ELF32_R_TYPE (irel->r_info)
3032 == (int) R_MN10300_GOTOFF32)
3033 ? R_MN10300_GOTOFF24
3034 : (ELF32_R_TYPE (irel->r_info)
3035 == (int) R_MN10300_GOT32)
3039 /* Delete one byte of data. */
3040 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3041 irel->r_offset + 3, 1))
3044 /* That will change things, so, we should relax
3045 again. Note that this is not required, and it
3054 /* See if the value will fit in 16 bits.
3055 We allow any 16bit match here. We prune those we can't
3057 if ((long) value < 0x7fff && (long) value > -0x8000)
3061 /* Most insns which have 32bit operands are 6 bytes long;
3062 exceptions are pcrel insns and bit insns.
3064 We handle pcrel insns above. We don't bother trying
3065 to handle the bit insns here.
3067 The first byte of the remaining insns will be 0xfc. */
3069 /* Get the first opcode. */
3070 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
3075 /* Get the second opcode. */
3076 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3078 if ((code & 0xf0) < 0x80)
3079 switch (code & 0xf0)
3081 /* mov (d32,am),dn -> mov (d32,am),dn
3082 mov dm,(d32,am) -> mov dn,(d32,am)
3083 mov (d32,am),an -> mov (d32,am),an
3084 mov dm,(d32,am) -> mov dn,(d32,am)
3085 movbu (d32,am),dn -> movbu (d32,am),dn
3086 movbu dm,(d32,am) -> movbu dn,(d32,am)
3087 movhu (d32,am),dn -> movhu (d32,am),dn
3088 movhu dm,(d32,am) -> movhu dn,(d32,am) */
3097 /* Not safe if the high bit is on as relaxing may
3098 move the value out of high mem and thus not fit
3099 in a signed 16bit value. */
3101 && (value & 0x8000))
3104 /* Note that we've changed the relocation contents, etc. */
3105 elf_section_data (sec)->relocs = internal_relocs;
3106 elf_section_data (sec)->this_hdr.contents = contents;
3107 symtab_hdr->contents = (unsigned char *) isymbuf;
3109 /* Fix the opcode. */
3110 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3111 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3113 /* Fix the relocation's type. */
3114 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3115 (ELF32_R_TYPE (irel->r_info)
3116 == (int) R_MN10300_GOTOFF32)
3117 ? R_MN10300_GOTOFF16
3118 : (ELF32_R_TYPE (irel->r_info)
3119 == (int) R_MN10300_GOT32)
3121 : (ELF32_R_TYPE (irel->r_info)
3122 == (int) R_MN10300_GOTPC32)
3123 ? R_MN10300_GOTPC16 :
3126 /* Delete two bytes of data. */
3127 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3128 irel->r_offset + 2, 2))
3131 /* That will change things, so, we should relax again.
3132 Note that this is not required, and it may be slow. */
3136 else if ((code & 0xf0) == 0x80
3137 || (code & 0xf0) == 0x90)
3138 switch (code & 0xf3)
3140 /* mov dn,(abs32) -> mov dn,(abs16)
3141 movbu dn,(abs32) -> movbu dn,(abs16)
3142 movhu dn,(abs32) -> movhu dn,(abs16) */
3146 /* Note that we've changed the relocation contents, etc. */
3147 elf_section_data (sec)->relocs = internal_relocs;
3148 elf_section_data (sec)->this_hdr.contents = contents;
3149 symtab_hdr->contents = (unsigned char *) isymbuf;
3151 if ((code & 0xf3) == 0x81)
3152 code = 0x01 + (code & 0x0c);
3153 else if ((code & 0xf3) == 0x82)
3154 code = 0x02 + (code & 0x0c);
3155 else if ((code & 0xf3) == 0x83)
3156 code = 0x03 + (code & 0x0c);
3160 /* Fix the opcode. */
3161 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3163 /* Fix the relocation's type. */
3164 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3165 (ELF32_R_TYPE (irel->r_info)
3166 == (int) R_MN10300_GOTOFF32)
3167 ? R_MN10300_GOTOFF16
3168 : (ELF32_R_TYPE (irel->r_info)
3169 == (int) R_MN10300_GOT32)
3171 : (ELF32_R_TYPE (irel->r_info)
3172 == (int) R_MN10300_GOTPC32)
3173 ? R_MN10300_GOTPC16 :
3176 /* The opcode got shorter too, so we have to fix the
3177 addend and offset too! */
3178 irel->r_offset -= 1;
3180 /* Delete three bytes of data. */
3181 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3182 irel->r_offset + 1, 3))
3185 /* That will change things, so, we should relax again.
3186 Note that this is not required, and it may be slow. */
3190 /* mov am,(abs32) -> mov am,(abs16)
3191 mov am,(d32,sp) -> mov am,(d16,sp)
3192 mov dm,(d32,sp) -> mov dm,(d32,sp)
3193 movbu dm,(d32,sp) -> movbu dm,(d32,sp)
3194 movhu dm,(d32,sp) -> movhu dm,(d32,sp) */
3200 /* sp-based offsets are zero-extended. */
3201 if (code >= 0x90 && code <= 0x93
3205 /* Note that we've changed the relocation contents, etc. */
3206 elf_section_data (sec)->relocs = internal_relocs;
3207 elf_section_data (sec)->this_hdr.contents = contents;
3208 symtab_hdr->contents = (unsigned char *) isymbuf;
3210 /* Fix the opcode. */
3211 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3212 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3214 /* Fix the relocation's type. */
3215 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3216 (ELF32_R_TYPE (irel->r_info)
3217 == (int) R_MN10300_GOTOFF32)
3218 ? R_MN10300_GOTOFF16
3219 : (ELF32_R_TYPE (irel->r_info)
3220 == (int) R_MN10300_GOT32)
3222 : (ELF32_R_TYPE (irel->r_info)
3223 == (int) R_MN10300_GOTPC32)
3224 ? R_MN10300_GOTPC16 :
3227 /* Delete two bytes of data. */
3228 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3229 irel->r_offset + 2, 2))
3232 /* That will change things, so, we should relax again.
3233 Note that this is not required, and it may be slow. */
3237 else if ((code & 0xf0) < 0xf0)
3238 switch (code & 0xfc)
3240 /* mov imm32,dn -> mov imm16,dn
3241 mov imm32,an -> mov imm16,an
3242 mov (abs32),dn -> mov (abs16),dn
3243 movbu (abs32),dn -> movbu (abs16),dn
3244 movhu (abs32),dn -> movhu (abs16),dn */
3250 /* Not safe if the high bit is on as relaxing may
3251 move the value out of high mem and thus not fit
3252 in a signed 16bit value. */
3254 && (value & 0x8000))
3257 /* mov imm16, an zero-extends the immediate. */
3262 /* Note that we've changed the relocation contents, etc. */
3263 elf_section_data (sec)->relocs = internal_relocs;
3264 elf_section_data (sec)->this_hdr.contents = contents;
3265 symtab_hdr->contents = (unsigned char *) isymbuf;
3267 if ((code & 0xfc) == 0xcc)
3268 code = 0x2c + (code & 0x03);
3269 else if ((code & 0xfc) == 0xdc)
3270 code = 0x24 + (code & 0x03);
3271 else if ((code & 0xfc) == 0xa4)
3272 code = 0x30 + (code & 0x03);
3273 else if ((code & 0xfc) == 0xa8)
3274 code = 0x34 + (code & 0x03);
3275 else if ((code & 0xfc) == 0xac)
3276 code = 0x38 + (code & 0x03);
3280 /* Fix the opcode. */
3281 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3283 /* Fix the relocation's type. */
3284 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3285 (ELF32_R_TYPE (irel->r_info)
3286 == (int) R_MN10300_GOTOFF32)
3287 ? R_MN10300_GOTOFF16
3288 : (ELF32_R_TYPE (irel->r_info)
3289 == (int) R_MN10300_GOT32)
3291 : (ELF32_R_TYPE (irel->r_info)
3292 == (int) R_MN10300_GOTPC32)
3293 ? R_MN10300_GOTPC16 :
3296 /* The opcode got shorter too, so we have to fix the
3297 addend and offset too! */
3298 irel->r_offset -= 1;
3300 /* Delete three bytes of data. */
3301 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3302 irel->r_offset + 1, 3))
3305 /* That will change things, so, we should relax again.
3306 Note that this is not required, and it may be slow. */
3310 /* mov (abs32),an -> mov (abs16),an
3311 mov (d32,sp),an -> mov (d16,sp),an
3312 mov (d32,sp),dn -> mov (d16,sp),dn
3313 movbu (d32,sp),dn -> movbu (d16,sp),dn
3314 movhu (d32,sp),dn -> movhu (d16,sp),dn
3315 add imm32,dn -> add imm16,dn
3316 cmp imm32,dn -> cmp imm16,dn
3317 add imm32,an -> add imm16,an
3318 cmp imm32,an -> cmp imm16,an
3319 and imm32,dn -> and imm16,dn
3320 or imm32,dn -> or imm16,dn
3321 xor imm32,dn -> xor imm16,dn
3322 btst imm32,dn -> btst imm16,dn */
3338 /* cmp imm16, an zero-extends the immediate. */
3343 /* So do sp-based offsets. */
3344 if (code >= 0xb0 && code <= 0xb3
3348 /* Note that we've changed the relocation contents, etc. */
3349 elf_section_data (sec)->relocs = internal_relocs;
3350 elf_section_data (sec)->this_hdr.contents = contents;
3351 symtab_hdr->contents = (unsigned char *) isymbuf;
3353 /* Fix the opcode. */
3354 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3355 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3357 /* Fix the relocation's type. */
3358 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3359 (ELF32_R_TYPE (irel->r_info)
3360 == (int) R_MN10300_GOTOFF32)
3361 ? R_MN10300_GOTOFF16
3362 : (ELF32_R_TYPE (irel->r_info)
3363 == (int) R_MN10300_GOT32)
3365 : (ELF32_R_TYPE (irel->r_info)
3366 == (int) R_MN10300_GOTPC32)
3367 ? R_MN10300_GOTPC16 :
3370 /* Delete two bytes of data. */
3371 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3372 irel->r_offset + 2, 2))
3375 /* That will change things, so, we should relax again.
3376 Note that this is not required, and it may be slow. */
3380 else if (code == 0xfe)
3382 /* add imm32,sp -> add imm16,sp */
3384 /* Note that we've changed the relocation contents, etc. */
3385 elf_section_data (sec)->relocs = internal_relocs;
3386 elf_section_data (sec)->this_hdr.contents = contents;
3387 symtab_hdr->contents = (unsigned char *) isymbuf;
3389 /* Fix the opcode. */
3390 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3391 bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1);
3393 /* Fix the relocation's type. */
3394 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3395 (ELF32_R_TYPE (irel->r_info)
3396 == (int) R_MN10300_GOT32)
3398 : (ELF32_R_TYPE (irel->r_info)
3399 == (int) R_MN10300_GOTOFF32)
3400 ? R_MN10300_GOTOFF16
3401 : (ELF32_R_TYPE (irel->r_info)
3402 == (int) R_MN10300_GOTPC32)
3403 ? R_MN10300_GOTPC16 :
3406 /* Delete two bytes of data. */
3407 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3408 irel->r_offset + 2, 2))
3411 /* That will change things, so, we should relax again.
3412 Note that this is not required, and it may be slow. */
3421 && symtab_hdr->contents != (unsigned char *) isymbuf)
3423 if (! link_info->keep_memory)
3427 /* Cache the symbols for elf_link_input_bfd. */
3428 symtab_hdr->contents = (unsigned char *) isymbuf;
3432 if (contents != NULL
3433 && elf_section_data (sec)->this_hdr.contents != contents)
3435 if (! link_info->keep_memory)
3439 /* Cache the section contents for elf_link_input_bfd. */
3440 elf_section_data (sec)->this_hdr.contents = contents;
3444 if (internal_relocs != NULL
3445 && elf_section_data (sec)->relocs != internal_relocs)
3446 free (internal_relocs);
3452 && symtab_hdr->contents != (unsigned char *) isymbuf)
3454 if (contents != NULL
3455 && elf_section_data (section)->this_hdr.contents != contents)
3457 if (internal_relocs != NULL
3458 && elf_section_data (section)->relocs != internal_relocs)
3459 free (internal_relocs);
3464 /* Compute the stack size and movm arguments for the function
3465 referred to by HASH at address ADDR in section with
3466 contents CONTENTS, store the information in the hash table. */
3468 compute_function_info (abfd, hash, addr, contents)
3470 struct elf32_mn10300_link_hash_entry *hash;
3472 unsigned char *contents;
3474 unsigned char byte1, byte2;
3475 /* We only care about a very small subset of the possible prologue
3476 sequences here. Basically we look for:
3478 movm [d2,d3,a2,a3],sp (optional)
3479 add <size>,sp (optional, and only for sizes which fit in an unsigned
3482 If we find anything else, we quit. */
3484 /* Look for movm [regs],sp */
3485 byte1 = bfd_get_8 (abfd, contents + addr);
3486 byte2 = bfd_get_8 (abfd, contents + addr + 1);
3490 hash->movm_args = byte2;
3492 byte1 = bfd_get_8 (abfd, contents + addr);
3493 byte2 = bfd_get_8 (abfd, contents + addr + 1);
3496 /* Now figure out how much stack space will be allocated by the movm
3497 instruction. We need this kept separate from the function's normal
3499 if (hash->movm_args)
3502 if (hash->movm_args & 0x80)
3503 hash->movm_stack_size += 4;
3506 if (hash->movm_args & 0x40)
3507 hash->movm_stack_size += 4;
3510 if (hash->movm_args & 0x20)
3511 hash->movm_stack_size += 4;
3514 if (hash->movm_args & 0x10)
3515 hash->movm_stack_size += 4;
3517 /* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */
3518 if (hash->movm_args & 0x08)
3519 hash->movm_stack_size += 8 * 4;
3521 if (bfd_get_mach (abfd) == bfd_mach_am33
3522 || bfd_get_mach (abfd) == bfd_mach_am33_2)
3524 /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */
3525 if (hash->movm_args & 0x1)
3526 hash->movm_stack_size += 6 * 4;
3528 /* exreg1 space. e4, e5, e6, e7 */
3529 if (hash->movm_args & 0x2)
3530 hash->movm_stack_size += 4 * 4;
3532 /* exreg0 space. e2, e3 */
3533 if (hash->movm_args & 0x4)
3534 hash->movm_stack_size += 2 * 4;
3538 /* Now look for the two stack adjustment variants. */
3539 if (byte1 == 0xf8 && byte2 == 0xfe)
3541 int temp = bfd_get_8 (abfd, contents + addr + 2);
3542 temp = ((temp & 0xff) ^ (~0x7f)) + 0x80;
3544 hash->stack_size = -temp;
3546 else if (byte1 == 0xfa && byte2 == 0xfe)
3548 int temp = bfd_get_16 (abfd, contents + addr + 2);
3549 temp = ((temp & 0xffff) ^ (~0x7fff)) + 0x8000;
3553 hash->stack_size = temp;
3556 /* If the total stack to be allocated by the call instruction is more
3557 than 255 bytes, then we can't remove the stack adjustment by using
3558 "call" (we might still be able to remove the "movm" instruction. */
3559 if (hash->stack_size + hash->movm_stack_size > 255)
3560 hash->stack_size = 0;
3565 /* Delete some bytes from a section while relaxing. */
3568 mn10300_elf_relax_delete_bytes (abfd, sec, addr, count)
3574 Elf_Internal_Shdr *symtab_hdr;
3575 unsigned int sec_shndx;
3577 Elf_Internal_Rela *irel, *irelend;
3578 Elf_Internal_Rela *irelalign;
3580 Elf_Internal_Sym *isym, *isymend;
3581 struct elf_link_hash_entry **sym_hashes;
3582 struct elf_link_hash_entry **end_hashes;
3583 unsigned int symcount;
3585 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
3587 contents = elf_section_data (sec)->this_hdr.contents;
3589 /* The deletion must stop at the next ALIGN reloc for an aligment
3590 power larger than the number of bytes we are deleting. */
3593 toaddr = sec->_cooked_size;
3595 irel = elf_section_data (sec)->relocs;
3596 irelend = irel + sec->reloc_count;
3598 /* Actually delete the bytes. */
3599 memmove (contents + addr, contents + addr + count,
3600 (size_t) (toaddr - addr - count));
3601 sec->_cooked_size -= count;
3603 /* Adjust all the relocs. */
3604 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
3606 /* Get the new reloc address. */
3607 if ((irel->r_offset > addr
3608 && irel->r_offset < toaddr))
3609 irel->r_offset -= count;
3612 /* Adjust the local symbols defined in this section. */
3613 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3614 isym = (Elf_Internal_Sym *) symtab_hdr->contents;
3615 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
3617 if (isym->st_shndx == sec_shndx
3618 && isym->st_value > addr
3619 && isym->st_value < toaddr)
3620 isym->st_value -= count;
3623 /* Now adjust the global symbols defined in this section. */
3624 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
3625 - symtab_hdr->sh_info);
3626 sym_hashes = elf_sym_hashes (abfd);
3627 end_hashes = sym_hashes + symcount;
3628 for (; sym_hashes < end_hashes; sym_hashes++)
3630 struct elf_link_hash_entry *sym_hash = *sym_hashes;
3631 if ((sym_hash->root.type == bfd_link_hash_defined
3632 || sym_hash->root.type == bfd_link_hash_defweak)
3633 && sym_hash->root.u.def.section == sec
3634 && sym_hash->root.u.def.value > addr
3635 && sym_hash->root.u.def.value < toaddr)
3637 sym_hash->root.u.def.value -= count;
3644 /* Return TRUE if a symbol exists at the given address, else return
3647 mn10300_elf_symbol_address_p (abfd, sec, isym, addr)
3650 Elf_Internal_Sym *isym;
3653 Elf_Internal_Shdr *symtab_hdr;
3654 unsigned int sec_shndx;
3655 Elf_Internal_Sym *isymend;
3656 struct elf_link_hash_entry **sym_hashes;
3657 struct elf_link_hash_entry **end_hashes;
3658 unsigned int symcount;
3660 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
3662 /* Examine all the symbols. */
3663 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3664 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
3666 if (isym->st_shndx == sec_shndx
3667 && isym->st_value == addr)
3671 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
3672 - symtab_hdr->sh_info);
3673 sym_hashes = elf_sym_hashes (abfd);
3674 end_hashes = sym_hashes + symcount;
3675 for (; sym_hashes < end_hashes; sym_hashes++)
3677 struct elf_link_hash_entry *sym_hash = *sym_hashes;
3678 if ((sym_hash->root.type == bfd_link_hash_defined
3679 || sym_hash->root.type == bfd_link_hash_defweak)
3680 && sym_hash->root.u.def.section == sec
3681 && sym_hash->root.u.def.value == addr)
3688 /* This is a version of bfd_generic_get_relocated_section_contents
3689 which uses mn10300_elf_relocate_section. */
3692 mn10300_elf_get_relocated_section_contents (output_bfd, link_info, link_order,
3693 data, relocatable, symbols)
3695 struct bfd_link_info *link_info;
3696 struct bfd_link_order *link_order;
3698 bfd_boolean relocatable;
3701 Elf_Internal_Shdr *symtab_hdr;
3702 asection *input_section = link_order->u.indirect.section;
3703 bfd *input_bfd = input_section->owner;
3704 asection **sections = NULL;
3705 Elf_Internal_Rela *internal_relocs = NULL;
3706 Elf_Internal_Sym *isymbuf = NULL;
3708 /* We only need to handle the case of relaxing, or of having a
3709 particular set of section contents, specially. */
3711 || elf_section_data (input_section)->this_hdr.contents == NULL)
3712 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
3717 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3719 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
3720 (size_t) input_section->_raw_size);
3722 if ((input_section->flags & SEC_RELOC) != 0
3723 && input_section->reloc_count > 0)
3726 Elf_Internal_Sym *isym, *isymend;
3729 internal_relocs = (_bfd_elf_link_read_relocs
3730 (input_bfd, input_section, (PTR) NULL,
3731 (Elf_Internal_Rela *) NULL, FALSE));
3732 if (internal_relocs == NULL)
3735 if (symtab_hdr->sh_info != 0)
3737 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
3738 if (isymbuf == NULL)
3739 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
3740 symtab_hdr->sh_info, 0,
3742 if (isymbuf == NULL)
3746 amt = symtab_hdr->sh_info;
3747 amt *= sizeof (asection *);
3748 sections = (asection **) bfd_malloc (amt);
3749 if (sections == NULL && amt != 0)
3752 isymend = isymbuf + symtab_hdr->sh_info;
3753 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
3757 if (isym->st_shndx == SHN_UNDEF)
3758 isec = bfd_und_section_ptr;
3759 else if (isym->st_shndx == SHN_ABS)
3760 isec = bfd_abs_section_ptr;
3761 else if (isym->st_shndx == SHN_COMMON)
3762 isec = bfd_com_section_ptr;
3764 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
3769 if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd,
3770 input_section, data, internal_relocs,
3774 if (sections != NULL)
3776 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
3778 if (internal_relocs != elf_section_data (input_section)->relocs)
3779 free (internal_relocs);
3785 if (sections != NULL)
3787 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
3789 if (internal_relocs != NULL
3790 && internal_relocs != elf_section_data (input_section)->relocs)
3791 free (internal_relocs);
3795 /* Assorted hash table functions. */
3797 /* Initialize an entry in the link hash table. */
3799 /* Create an entry in an MN10300 ELF linker hash table. */
3801 static struct bfd_hash_entry *
3802 elf32_mn10300_link_hash_newfunc (entry, table, string)
3803 struct bfd_hash_entry *entry;
3804 struct bfd_hash_table *table;
3807 struct elf32_mn10300_link_hash_entry *ret =
3808 (struct elf32_mn10300_link_hash_entry *) entry;
3810 /* Allocate the structure if it has not already been allocated by a
3812 if (ret == (struct elf32_mn10300_link_hash_entry *) NULL)
3813 ret = ((struct elf32_mn10300_link_hash_entry *)
3814 bfd_hash_allocate (table,
3815 sizeof (struct elf32_mn10300_link_hash_entry)));
3816 if (ret == (struct elf32_mn10300_link_hash_entry *) NULL)
3817 return (struct bfd_hash_entry *) ret;
3819 /* Call the allocation method of the superclass. */
3820 ret = ((struct elf32_mn10300_link_hash_entry *)
3821 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
3823 if (ret != (struct elf32_mn10300_link_hash_entry *) NULL)
3825 ret->direct_calls = 0;
3826 ret->stack_size = 0;
3828 ret->movm_stack_size = 0;
3829 ret->pcrel_relocs_copied = NULL;
3833 return (struct bfd_hash_entry *) ret;
3836 /* Create an mn10300 ELF linker hash table. */
3838 static struct bfd_link_hash_table *
3839 elf32_mn10300_link_hash_table_create (abfd)
3842 struct elf32_mn10300_link_hash_table *ret;
3843 bfd_size_type amt = sizeof (struct elf32_mn10300_link_hash_table);
3845 ret = (struct elf32_mn10300_link_hash_table *) bfd_malloc (amt);
3846 if (ret == (struct elf32_mn10300_link_hash_table *) NULL)
3849 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
3850 elf32_mn10300_link_hash_newfunc))
3857 amt = sizeof (struct elf_link_hash_table);
3858 ret->static_hash_table
3859 = (struct elf32_mn10300_link_hash_table *) bfd_malloc (amt);
3860 if (ret->static_hash_table == NULL)
3866 if (! _bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd,
3867 elf32_mn10300_link_hash_newfunc))
3869 free (ret->static_hash_table);
3873 return &ret->root.root;
3876 /* Free an mn10300 ELF linker hash table. */
3879 elf32_mn10300_link_hash_table_free (hash)
3880 struct bfd_link_hash_table *hash;
3882 struct elf32_mn10300_link_hash_table *ret
3883 = (struct elf32_mn10300_link_hash_table *) hash;
3885 _bfd_generic_link_hash_table_free
3886 ((struct bfd_link_hash_table *) ret->static_hash_table);
3887 _bfd_generic_link_hash_table_free
3888 ((struct bfd_link_hash_table *) ret);
3891 static unsigned long
3892 elf_mn10300_mach (flags)
3895 switch (flags & EF_MN10300_MACH)
3897 case E_MN10300_MACH_MN10300:
3899 return bfd_mach_mn10300;
3901 case E_MN10300_MACH_AM33:
3902 return bfd_mach_am33;
3904 case E_MN10300_MACH_AM33_2:
3905 return bfd_mach_am33_2;
3909 /* The final processing done just before writing out a MN10300 ELF object
3910 file. This gets the MN10300 architecture right based on the machine
3914 _bfd_mn10300_elf_final_write_processing (abfd, linker)
3916 bfd_boolean linker ATTRIBUTE_UNUSED;
3920 switch (bfd_get_mach (abfd))
3923 case bfd_mach_mn10300:
3924 val = E_MN10300_MACH_MN10300;
3928 val = E_MN10300_MACH_AM33;
3931 case bfd_mach_am33_2:
3932 val = E_MN10300_MACH_AM33_2;
3936 elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH);
3937 elf_elfheader (abfd)->e_flags |= val;
3941 _bfd_mn10300_elf_object_p (abfd)
3944 bfd_default_set_arch_mach (abfd, bfd_arch_mn10300,
3945 elf_mn10300_mach (elf_elfheader (abfd)->e_flags));
3949 /* Merge backend specific data from an object file to the output
3950 object file when linking. */
3953 _bfd_mn10300_elf_merge_private_bfd_data (ibfd, obfd)
3957 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3958 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3961 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3962 && bfd_get_mach (obfd) < bfd_get_mach (ibfd))
3964 if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3965 bfd_get_mach (ibfd)))
3972 #define PLT0_ENTRY_SIZE 15
3973 #define PLT_ENTRY_SIZE 20
3974 #define PIC_PLT_ENTRY_SIZE 24
3976 static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] =
3978 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */
3979 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */
3980 0xf0, 0xf4, /* jmp (a0) */
3983 static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] =
3985 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */
3986 0xf0, 0xf4, /* jmp (a0) */
3987 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
3988 0xdc, 0, 0, 0, 0, /* jmp .plt0 */
3991 static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] =
3993 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */
3994 0xf0, 0xf4, /* jmp (a0) */
3995 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
3996 0xf8, 0x22, 8, /* mov (8,a2),a0 */
3997 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */
3998 0xf0, 0xf4, /* jmp (a0) */
4001 /* Return size of the first PLT entry. */
4002 #define elf_mn10300_sizeof_plt0(info) \
4003 (info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE)
4005 /* Return size of a PLT entry. */
4006 #define elf_mn10300_sizeof_plt(info) \
4007 (info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE)
4009 /* Return offset of the PLT0 address in an absolute PLT entry. */
4010 #define elf_mn10300_plt_plt0_offset(info) 16
4012 /* Return offset of the linker in PLT0 entry. */
4013 #define elf_mn10300_plt0_linker_offset(info) 2
4015 /* Return offset of the GOT id in PLT0 entry. */
4016 #define elf_mn10300_plt0_gotid_offset(info) 9
4018 /* Return offset of the temporary in PLT entry */
4019 #define elf_mn10300_plt_temp_offset(info) 8
4021 /* Return offset of the symbol in PLT entry. */
4022 #define elf_mn10300_plt_symbol_offset(info) 2
4024 /* Return offset of the relocation in PLT entry. */
4025 #define elf_mn10300_plt_reloc_offset(info) 11
4027 /* The name of the dynamic interpreter. This is put in the .interp
4030 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
4032 /* Create dynamic sections when linking against a dynamic object. */
4035 _bfd_mn10300_elf_create_dynamic_sections (abfd, info)
4037 struct bfd_link_info *info;
4041 const struct elf_backend_data * bed = get_elf_backend_data (abfd);
4044 switch (bed->s->arch_size)
4055 bfd_set_error (bfd_error_bad_value);
4059 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
4060 .rel[a].bss sections. */
4062 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4063 | SEC_LINKER_CREATED);
4065 s = bfd_make_section (abfd,
4066 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt");
4068 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
4069 || ! bfd_set_section_alignment (abfd, s, ptralign))
4072 if (! _bfd_mn10300_elf_create_got_section (abfd, info))
4076 const char * secname;
4081 for (sec = abfd->sections; sec; sec = sec->next)
4083 secflags = bfd_get_section_flags (abfd, sec);
4084 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
4085 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
4088 secname = bfd_get_section_name (abfd, sec);
4089 relname = (char *) bfd_malloc (strlen (secname) + 6);
4090 strcpy (relname, ".rela");
4091 strcat (relname, secname);
4093 s = bfd_make_section (abfd, relname);
4095 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
4096 || ! bfd_set_section_alignment (abfd, s, ptralign))
4101 if (bed->want_dynbss)
4103 /* The .dynbss section is a place to put symbols which are defined
4104 by dynamic objects, are referenced by regular objects, and are
4105 not functions. We must allocate space for them in the process
4106 image and use a R_*_COPY reloc to tell the dynamic linker to
4107 initialize them at run time. The linker script puts the .dynbss
4108 section into the .bss section of the final image. */
4109 s = bfd_make_section (abfd, ".dynbss");
4111 || ! bfd_set_section_flags (abfd, s, SEC_ALLOC))
4114 /* The .rel[a].bss section holds copy relocs. This section is not
4115 normally needed. We need to create it here, though, so that the
4116 linker will map it to an output section. We can't just create it
4117 only if we need it, because we will not know whether we need it
4118 until we have seen all the input files, and the first time the
4119 main linker code calls BFD after examining all the input files
4120 (size_dynamic_sections) the input sections have already been
4121 mapped to the output sections. If the section turns out not to
4122 be needed, we can discard it later. We will never need this
4123 section when generating a shared object, since they do not use
4127 s = bfd_make_section (abfd,
4128 (bed->default_use_rela_p
4129 ? ".rela.bss" : ".rel.bss"));
4131 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
4132 || ! bfd_set_section_alignment (abfd, s, ptralign))
4140 /* Adjust a symbol defined by a dynamic object and referenced by a
4141 regular object. The current definition is in some section of the
4142 dynamic object, but we're not including those sections. We have to
4143 change the definition to something the rest of the link can
4147 _bfd_mn10300_elf_adjust_dynamic_symbol (info, h)
4148 struct bfd_link_info * info;
4149 struct elf_link_hash_entry * h;
4153 unsigned int power_of_two;
4155 dynobj = elf_hash_table (info)->dynobj;
4157 /* Make sure we know what is going on here. */
4158 BFD_ASSERT (dynobj != NULL
4159 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
4160 || h->weakdef != NULL
4161 || ((h->elf_link_hash_flags
4162 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
4163 && (h->elf_link_hash_flags
4164 & ELF_LINK_HASH_REF_REGULAR) != 0
4165 && (h->elf_link_hash_flags
4166 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
4168 /* If this is a function, put it in the procedure linkage table. We
4169 will fill in the contents of the procedure linkage table later,
4170 when we know the address of the .got section. */
4171 if (h->type == STT_FUNC
4172 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
4175 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
4176 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0)
4178 /* This case can occur if we saw a PLT reloc in an input
4179 file, but the symbol was never referred to by a dynamic
4180 object. In such a case, we don't actually need to build
4181 a procedure linkage table, and we can just do a REL32
4183 BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0);
4187 /* Make sure this symbol is output as a dynamic symbol. */
4188 if (h->dynindx == -1)
4190 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
4194 s = bfd_get_section_by_name (dynobj, ".plt");
4195 BFD_ASSERT (s != NULL);
4197 /* If this is the first .plt entry, make room for the special
4199 if (s->_raw_size == 0)
4200 s->_raw_size += elf_mn10300_sizeof_plt0 (info);
4202 /* If this symbol is not defined in a regular file, and we are
4203 not generating a shared library, then set the symbol to this
4204 location in the .plt. This is required to make function
4205 pointers compare as equal between the normal executable and
4206 the shared library. */
4208 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4210 h->root.u.def.section = s;
4211 h->root.u.def.value = s->_raw_size;
4214 h->plt.offset = s->_raw_size;
4216 /* Make room for this entry. */
4217 s->_raw_size += elf_mn10300_sizeof_plt (info);
4219 /* We also need to make an entry in the .got.plt section, which
4220 will be placed in the .got section by the linker script. */
4222 s = bfd_get_section_by_name (dynobj, ".got.plt");
4223 BFD_ASSERT (s != NULL);
4226 /* We also need to make an entry in the .rela.plt section. */
4228 s = bfd_get_section_by_name (dynobj, ".rela.plt");
4229 BFD_ASSERT (s != NULL);
4230 s->_raw_size += sizeof (Elf32_External_Rela);
4235 /* If this is a weak symbol, and there is a real definition, the
4236 processor independent code will have arranged for us to see the
4237 real definition first, and we can just use the same value. */
4238 if (h->weakdef != NULL)
4240 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
4241 || h->weakdef->root.type == bfd_link_hash_defweak);
4242 h->root.u.def.section = h->weakdef->root.u.def.section;
4243 h->root.u.def.value = h->weakdef->root.u.def.value;
4247 /* This is a reference to a symbol defined by a dynamic object which
4248 is not a function. */
4250 /* If we are creating a shared library, we must presume that the
4251 only references to the symbol are via the global offset table.
4252 For such cases we need not do anything here; the relocations will
4253 be handled correctly by relocate_section. */
4257 /* If there are no references to this symbol that do not use the
4258 GOT, we don't need to generate a copy reloc. */
4259 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
4262 /* We must allocate the symbol in our .dynbss section, which will
4263 become part of the .bss section of the executable. There will be
4264 an entry for this symbol in the .dynsym section. The dynamic
4265 object will contain position independent code, so all references
4266 from the dynamic object to this symbol will go through the global
4267 offset table. The dynamic linker will use the .dynsym entry to
4268 determine the address it must put in the global offset table, so
4269 both the dynamic object and the regular object will refer to the
4270 same memory location for the variable. */
4272 s = bfd_get_section_by_name (dynobj, ".dynbss");
4273 BFD_ASSERT (s != NULL);
4275 /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to
4276 copy the initial value out of the dynamic object and into the
4277 runtime process image. We need to remember the offset into the
4278 .rela.bss section we are going to use. */
4279 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4283 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
4284 BFD_ASSERT (srel != NULL);
4285 srel->_raw_size += sizeof (Elf32_External_Rela);
4286 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
4289 /* We need to figure out the alignment required for this symbol. I
4290 have no idea how ELF linkers handle this. */
4291 power_of_two = bfd_log2 (h->size);
4292 if (power_of_two > 3)
4295 /* Apply the required alignment. */
4296 s->_raw_size = BFD_ALIGN (s->_raw_size,
4297 (bfd_size_type) (1 << power_of_two));
4298 if (power_of_two > bfd_get_section_alignment (dynobj, s))
4300 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
4304 /* Define the symbol as being at this point in the section. */
4305 h->root.u.def.section = s;
4306 h->root.u.def.value = s->_raw_size;
4308 /* Increment the section size to make room for the symbol. */
4309 s->_raw_size += h->size;
4314 /* This function is called via elf32_mn10300_link_hash_traverse if we are
4315 creating a shared object with -Bsymbolic. It discards the space
4316 allocated to copy PC relative relocs against symbols which are
4317 defined in regular objects. We allocated space for them in the
4318 check_relocs routine, but we won't fill them in in the
4319 relocate_section routine. */
4322 _bfd_mn10300_elf_discard_copies (h, info)
4323 struct elf32_mn10300_link_hash_entry *h;
4324 struct bfd_link_info *info;
4326 struct elf_mn10300_pcrel_relocs_copied *s;
4328 /* If a symbol has been forced local or we have found a regular
4329 definition for the symbolic link case, then we won't be needing
4331 if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
4332 && ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
4335 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
4336 s->section->_raw_size -= s->count * sizeof (Elf32_External_Rel);
4342 /* Set the sizes of the dynamic sections. */
4345 _bfd_mn10300_elf_size_dynamic_sections (output_bfd, info)
4347 struct bfd_link_info * info;
4353 bfd_boolean reltext;
4355 dynobj = elf_hash_table (info)->dynobj;
4356 BFD_ASSERT (dynobj != NULL);
4358 if (elf_hash_table (info)->dynamic_sections_created)
4360 /* Set the contents of the .interp section to the interpreter. */
4361 if (info->executable)
4363 s = bfd_get_section_by_name (dynobj, ".interp");
4364 BFD_ASSERT (s != NULL);
4365 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
4366 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4371 /* We may have created entries in the .rela.got section.
4372 However, if we are not creating the dynamic sections, we will
4373 not actually use these entries. Reset the size of .rela.got,
4374 which will cause it to get stripped from the output file
4376 s = bfd_get_section_by_name (dynobj, ".rela.got");
4381 /* If this is a -Bsymbolic shared link, then we need to discard all
4382 PC relative relocs against symbols defined in a regular object.
4383 We allocated space for them in the check_relocs routine, but we
4384 will not fill them in in the relocate_section routine. */
4385 if (info->shared && info->symbolic)
4386 elf32_mn10300_link_hash_traverse (elf32_mn10300_hash_table (info),
4387 _bfd_mn10300_elf_discard_copies,
4390 /* The check_relocs and adjust_dynamic_symbol entry points have
4391 determined the sizes of the various dynamic sections. Allocate
4396 for (s = dynobj->sections; s != NULL; s = s->next)
4401 if ((s->flags & SEC_LINKER_CREATED) == 0)
4404 /* It's OK to base decisions on the section name, because none
4405 of the dynobj section names depend upon the input files. */
4406 name = bfd_get_section_name (dynobj, s);
4410 if (strcmp (name, ".plt") == 0)
4412 if (s->_raw_size == 0)
4413 /* Strip this section if we don't need it; see the
4417 /* Remember whether there is a PLT. */
4420 else if (strncmp (name, ".rela", 5) == 0)
4422 if (s->_raw_size == 0)
4424 /* If we don't need this section, strip it from the
4425 output file. This is mostly to handle .rela.bss and
4426 .rela.plt. We must create both sections in
4427 create_dynamic_sections, because they must be created
4428 before the linker maps input sections to output
4429 sections. The linker does that before
4430 adjust_dynamic_symbol is called, and it is that
4431 function which decides whether anything needs to go
4432 into these sections. */
4439 /* Remember whether there are any reloc sections other
4441 if (strcmp (name, ".rela.plt") != 0)
4443 const char * outname;
4447 /* If this relocation section applies to a read only
4448 section, then we probably need a DT_TEXTREL
4449 entry. The entries in the .rela.plt section
4450 really apply to the .got section, which we
4451 created ourselves and so know is not readonly. */
4452 outname = bfd_get_section_name (output_bfd,
4454 target = bfd_get_section_by_name (output_bfd, outname + 5);
4456 && (target->flags & SEC_READONLY) != 0
4457 && (target->flags & SEC_ALLOC) != 0)
4461 /* We use the reloc_count field as a counter if we need
4462 to copy relocs into the output file. */
4466 else if (strncmp (name, ".got", 4) != 0)
4467 /* It's not one of our sections, so don't allocate space. */
4472 _bfd_strip_section_from_output (info, s);
4476 /* Allocate memory for the section contents. We use bfd_zalloc
4477 here in case unused entries are not reclaimed before the
4478 section's contents are written out. This should not happen,
4479 but this way if it does, we get a R_MN10300_NONE reloc
4480 instead of garbage. */
4481 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
4482 if (s->contents == NULL && s->_raw_size != 0)
4486 if (elf_hash_table (info)->dynamic_sections_created)
4488 /* Add some entries to the .dynamic section. We fill in the
4489 values later, in _bfd_mn10300_elf_finish_dynamic_sections,
4490 but we must add the entries now so that we get the correct
4491 size for the .dynamic section. The DT_DEBUG entry is filled
4492 in by the dynamic linker and used by the debugger. */
4495 if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0))
4501 if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0)
4502 || ! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0)
4503 || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
4504 || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0))
4510 if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0)
4511 || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0)
4512 || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT,
4513 sizeof (Elf32_External_Rela)))
4519 if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0))
4527 /* Finish up dynamic symbol handling. We set the contents of various
4528 dynamic sections here. */
4531 _bfd_mn10300_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
4533 struct bfd_link_info * info;
4534 struct elf_link_hash_entry * h;
4535 Elf_Internal_Sym * sym;
4539 dynobj = elf_hash_table (info)->dynobj;
4541 if (h->plt.offset != (bfd_vma) -1)
4548 Elf_Internal_Rela rel;
4550 /* This symbol has an entry in the procedure linkage table. Set
4553 BFD_ASSERT (h->dynindx != -1);
4555 splt = bfd_get_section_by_name (dynobj, ".plt");
4556 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
4557 srel = bfd_get_section_by_name (dynobj, ".rela.plt");
4558 BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
4560 /* Get the index in the procedure linkage table which
4561 corresponds to this symbol. This is the index of this symbol
4562 in all the symbols for which we are making plt entries. The
4563 first entry in the procedure linkage table is reserved. */
4564 plt_index = ((h->plt.offset - elf_mn10300_sizeof_plt0 (info))
4565 / elf_mn10300_sizeof_plt (info));
4567 /* Get the offset into the .got table of the entry that
4568 corresponds to this function. Each .got entry is 4 bytes.
4569 The first three are reserved. */
4570 got_offset = (plt_index + 3) * 4;
4572 /* Fill in the entry in the procedure linkage table. */
4575 memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry,
4576 elf_mn10300_sizeof_plt (info));
4577 bfd_put_32 (output_bfd,
4578 (sgot->output_section->vma
4579 + sgot->output_offset
4581 (splt->contents + h->plt.offset
4582 + elf_mn10300_plt_symbol_offset (info)));
4584 bfd_put_32 (output_bfd,
4585 (1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)),
4586 (splt->contents + h->plt.offset
4587 + elf_mn10300_plt_plt0_offset (info)));
4591 memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry,
4592 elf_mn10300_sizeof_plt (info));
4594 bfd_put_32 (output_bfd, got_offset,
4595 (splt->contents + h->plt.offset
4596 + elf_mn10300_plt_symbol_offset (info)));
4599 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
4600 (splt->contents + h->plt.offset
4601 + elf_mn10300_plt_reloc_offset (info)));
4603 /* Fill in the entry in the global offset table. */
4604 bfd_put_32 (output_bfd,
4605 (splt->output_section->vma
4606 + splt->output_offset
4608 + elf_mn10300_plt_temp_offset (info)),
4609 sgot->contents + got_offset);
4611 /* Fill in the entry in the .rela.plt section. */
4612 rel.r_offset = (sgot->output_section->vma
4613 + sgot->output_offset
4615 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT);
4617 bfd_elf32_swap_reloca_out (output_bfd, &rel,
4618 (bfd_byte *) ((Elf32_External_Rela *) srel->contents
4621 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4622 /* Mark the symbol as undefined, rather than as defined in
4623 the .plt section. Leave the value alone. */
4624 sym->st_shndx = SHN_UNDEF;
4627 if (h->got.offset != (bfd_vma) -1)
4631 Elf_Internal_Rela rel;
4633 /* This symbol has an entry in the global offset table. Set it up. */
4635 sgot = bfd_get_section_by_name (dynobj, ".got");
4636 srel = bfd_get_section_by_name (dynobj, ".rela.got");
4637 BFD_ASSERT (sgot != NULL && srel != NULL);
4639 rel.r_offset = (sgot->output_section->vma
4640 + sgot->output_offset
4641 + (h->got.offset &~ 1));
4643 /* If this is a -Bsymbolic link, and the symbol is defined
4644 locally, we just want to emit a RELATIVE reloc. Likewise if
4645 the symbol was forced to be local because of a version file.
4646 The entry in the global offset table will already have been
4647 initialized in the relocate_section function. */
4649 && (info->symbolic || h->dynindx == -1)
4650 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
4652 rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
4653 rel.r_addend = (h->root.u.def.value
4654 + h->root.u.def.section->output_section->vma
4655 + h->root.u.def.section->output_offset);
4659 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
4660 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT);
4664 bfd_elf32_swap_reloca_out (output_bfd, &rel,
4665 (bfd_byte *) ((Elf32_External_Rela *) srel->contents
4666 + srel->reloc_count));
4667 ++ srel->reloc_count;
4670 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
4673 Elf_Internal_Rela rel;
4675 /* This symbol needs a copy reloc. Set it up. */
4676 BFD_ASSERT (h->dynindx != -1
4677 && (h->root.type == bfd_link_hash_defined
4678 || h->root.type == bfd_link_hash_defweak));
4680 s = bfd_get_section_by_name (h->root.u.def.section->owner,
4682 BFD_ASSERT (s != NULL);
4684 rel.r_offset = (h->root.u.def.value
4685 + h->root.u.def.section->output_section->vma
4686 + h->root.u.def.section->output_offset);
4687 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY);
4689 bfd_elf32_swap_reloca_out (output_bfd, &rel,
4690 (bfd_byte *) ((Elf32_External_Rela *) s->contents
4695 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4696 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
4697 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4698 sym->st_shndx = SHN_ABS;
4703 /* Finish up the dynamic sections. */
4706 _bfd_mn10300_elf_finish_dynamic_sections (output_bfd, info)
4708 struct bfd_link_info * info;
4714 dynobj = elf_hash_table (info)->dynobj;
4716 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
4717 BFD_ASSERT (sgot != NULL);
4718 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4720 if (elf_hash_table (info)->dynamic_sections_created)
4723 Elf32_External_Dyn * dyncon;
4724 Elf32_External_Dyn * dynconend;
4726 BFD_ASSERT (sdyn != NULL);
4728 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4729 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
4731 for (; dyncon < dynconend; dyncon++)
4733 Elf_Internal_Dyn dyn;
4737 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4751 s = bfd_get_section_by_name (output_bfd, name);
4752 BFD_ASSERT (s != NULL);
4753 dyn.d_un.d_ptr = s->vma;
4754 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4758 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
4759 BFD_ASSERT (s != NULL);
4760 if (s->_cooked_size != 0)
4761 dyn.d_un.d_val = s->_cooked_size;
4763 dyn.d_un.d_val = s->_raw_size;
4764 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4768 /* My reading of the SVR4 ABI indicates that the
4769 procedure linkage table relocs (DT_JMPREL) should be
4770 included in the overall relocs (DT_RELA). This is
4771 what Solaris does. However, UnixWare can not handle
4772 that case. Therefore, we override the DT_RELASZ entry
4773 here to make it not include the JMPREL relocs. Since
4774 the linker script arranges for .rela.plt to follow all
4775 other relocation sections, we don't have to worry
4776 about changing the DT_RELA entry. */
4777 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
4780 if (s->_cooked_size != 0)
4781 dyn.d_un.d_val -= s->_cooked_size;
4783 dyn.d_un.d_val -= s->_raw_size;
4785 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4790 /* Fill in the first entry in the procedure linkage table. */
4791 splt = bfd_get_section_by_name (dynobj, ".plt");
4792 if (splt && splt->_raw_size > 0)
4796 memcpy (splt->contents, elf_mn10300_pic_plt_entry,
4797 elf_mn10300_sizeof_plt (info));
4801 memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE);
4802 bfd_put_32 (output_bfd,
4803 sgot->output_section->vma + sgot->output_offset + 4,
4804 splt->contents + elf_mn10300_plt0_gotid_offset (info));
4805 bfd_put_32 (output_bfd,
4806 sgot->output_section->vma + sgot->output_offset + 8,
4807 splt->contents + elf_mn10300_plt0_linker_offset (info));
4810 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4811 really seem like the right value. */
4812 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
4816 /* Fill in the first three entries in the global offset table. */
4817 if (sgot->_raw_size > 0)
4820 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
4822 bfd_put_32 (output_bfd,
4823 sdyn->output_section->vma + sdyn->output_offset,
4825 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
4826 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
4829 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
4835 #define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec
4836 #define TARGET_LITTLE_NAME "elf32-mn10300"
4837 #define ELF_ARCH bfd_arch_mn10300
4838 #define ELF_MACHINE_CODE EM_MN10300
4839 #define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300
4840 #define ELF_MAXPAGESIZE 0x1000
4843 #define elf_info_to_howto mn10300_info_to_howto
4844 #define elf_info_to_howto_rel 0
4845 #define elf_backend_can_gc_sections 1
4846 #define elf_backend_rela_normal 1
4847 #define elf_backend_check_relocs mn10300_elf_check_relocs
4848 #define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook
4849 #define elf_backend_relocate_section mn10300_elf_relocate_section
4850 #define bfd_elf32_bfd_relax_section mn10300_elf_relax_section
4851 #define bfd_elf32_bfd_get_relocated_section_contents \
4852 mn10300_elf_get_relocated_section_contents
4853 #define bfd_elf32_bfd_link_hash_table_create \
4854 elf32_mn10300_link_hash_table_create
4855 #define bfd_elf32_bfd_link_hash_table_free \
4856 elf32_mn10300_link_hash_table_free
4858 #ifndef elf_symbol_leading_char
4859 #define elf_symbol_leading_char '_'
4862 /* So we can set bits in e_flags. */
4863 #define elf_backend_final_write_processing \
4864 _bfd_mn10300_elf_final_write_processing
4865 #define elf_backend_object_p _bfd_mn10300_elf_object_p
4867 #define bfd_elf32_bfd_merge_private_bfd_data \
4868 _bfd_mn10300_elf_merge_private_bfd_data
4870 #define elf_backend_can_gc_sections 1
4871 #define elf_backend_create_dynamic_sections \
4872 _bfd_mn10300_elf_create_dynamic_sections
4873 #define elf_backend_adjust_dynamic_symbol \
4874 _bfd_mn10300_elf_adjust_dynamic_symbol
4875 #define elf_backend_size_dynamic_sections \
4876 _bfd_mn10300_elf_size_dynamic_sections
4877 #define elf_backend_finish_dynamic_symbol \
4878 _bfd_mn10300_elf_finish_dynamic_symbol
4879 #define elf_backend_finish_dynamic_sections \
4880 _bfd_mn10300_elf_finish_dynamic_sections
4882 #define elf_backend_want_got_plt 1
4883 #define elf_backend_plt_readonly 1
4884 #define elf_backend_want_plt_sym 0
4885 #define elf_backend_got_header_size 12
4887 #include "elf32-target.h"