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 && entry->stack_size <= 128)
1748 else if (entry->stack_size > 0 && entry->stack_size < 256)
1751 /* If using "call" will result in larger code, then turn all
1752 the associated "call" instructions into "calls" instructions. */
1753 if (byte_count < entry->direct_calls)
1754 entry->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1756 /* This routine never fails. */
1760 /* This function handles relaxing for the mn10300.
1762 There are quite a few relaxing opportunities available on the mn10300:
1764 * calls:32 -> calls:16 2 bytes
1765 * call:32 -> call:16 2 bytes
1767 * call:32 -> calls:32 1 byte
1768 * call:16 -> calls:16 1 byte
1769 * These are done anytime using "calls" would result
1770 in smaller code, or when necessary to preserve the
1771 meaning of the program.
1775 * In some circumstances we can move instructions
1776 from a function prologue into a "call" instruction.
1777 This is only done if the resulting code is no larger
1778 than the original code.
1780 * jmp:32 -> jmp:16 2 bytes
1781 * jmp:16 -> bra:8 1 byte
1783 * If the previous instruction is a conditional branch
1784 around the jump/bra, we may be able to reverse its condition
1785 and change its target to the jump's target. The jump/bra
1786 can then be deleted. 2 bytes
1788 * mov abs32 -> mov abs16 1 or 2 bytes
1790 * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes
1791 - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes
1793 * Most instructions which accept d32 can relax to d16 1 or 2 bytes
1794 - Most instructions which accept d16 can relax to d8 1 or 2 bytes
1796 We don't handle imm16->imm8 or d16->d8 as they're very rare
1797 and somewhat more difficult to support. */
1800 mn10300_elf_relax_section (abfd, sec, link_info, again)
1803 struct bfd_link_info *link_info;
1806 Elf_Internal_Shdr *symtab_hdr;
1807 Elf_Internal_Rela *internal_relocs = NULL;
1808 Elf_Internal_Rela *irel, *irelend;
1809 bfd_byte *contents = NULL;
1810 Elf_Internal_Sym *isymbuf = NULL;
1811 struct elf32_mn10300_link_hash_table *hash_table;
1812 asection *section = sec;
1814 /* Assume nothing changes. */
1817 /* We need a pointer to the mn10300 specific hash table. */
1818 hash_table = elf32_mn10300_hash_table (link_info);
1820 /* Initialize fields in each hash table entry the first time through. */
1821 if ((hash_table->flags & MN10300_HASH_ENTRIES_INITIALIZED) == 0)
1825 /* Iterate over all the input bfds. */
1826 for (input_bfd = link_info->input_bfds;
1828 input_bfd = input_bfd->link_next)
1830 /* We're going to need all the symbols for each bfd. */
1831 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1832 if (symtab_hdr->sh_info != 0)
1834 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1835 if (isymbuf == NULL)
1836 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
1837 symtab_hdr->sh_info, 0,
1839 if (isymbuf == NULL)
1843 /* Iterate over each section in this bfd. */
1844 for (section = input_bfd->sections;
1846 section = section->next)
1848 struct elf32_mn10300_link_hash_entry *hash;
1849 Elf_Internal_Sym *sym;
1850 asection *sym_sec = NULL;
1851 const char *sym_name;
1854 /* If there's nothing to do in this section, skip it. */
1855 if (! (((section->flags & SEC_RELOC) != 0
1856 && section->reloc_count != 0)
1857 || (section->flags & SEC_CODE) != 0))
1860 /* Get cached copy of section contents if it exists. */
1861 if (elf_section_data (section)->this_hdr.contents != NULL)
1862 contents = elf_section_data (section)->this_hdr.contents;
1863 else if (section->_raw_size != 0)
1865 /* Go get them off disk. */
1866 contents = (bfd_byte *) bfd_malloc (section->_raw_size);
1867 if (contents == NULL)
1870 if (!bfd_get_section_contents (input_bfd, section,
1871 contents, (file_ptr) 0,
1872 section->_raw_size))
1878 /* If there aren't any relocs, then there's nothing to do. */
1879 if ((section->flags & SEC_RELOC) != 0
1880 && section->reloc_count != 0)
1883 /* Get a copy of the native relocations. */
1884 internal_relocs = (_bfd_elf_link_read_relocs
1885 (input_bfd, section, (PTR) NULL,
1886 (Elf_Internal_Rela *) NULL,
1887 link_info->keep_memory));
1888 if (internal_relocs == NULL)
1891 /* Now examine each relocation. */
1892 irel = internal_relocs;
1893 irelend = irel + section->reloc_count;
1894 for (; irel < irelend; irel++)
1897 unsigned long r_index;
1900 r_type = ELF32_R_TYPE (irel->r_info);
1901 r_index = ELF32_R_SYM (irel->r_info);
1903 if (r_type < 0 || r_type >= (int) R_MN10300_MAX)
1906 /* We need the name and hash table entry of the target
1912 if (r_index < symtab_hdr->sh_info)
1914 /* A local symbol. */
1915 Elf_Internal_Sym *isym;
1916 struct elf_link_hash_table *elftab;
1919 isym = isymbuf + r_index;
1920 if (isym->st_shndx == SHN_UNDEF)
1921 sym_sec = bfd_und_section_ptr;
1922 else if (isym->st_shndx == SHN_ABS)
1923 sym_sec = bfd_abs_section_ptr;
1924 else if (isym->st_shndx == SHN_COMMON)
1925 sym_sec = bfd_com_section_ptr;
1928 = bfd_section_from_elf_index (input_bfd,
1932 = bfd_elf_string_from_elf_section (input_bfd,
1937 /* If it isn't a function, then we don't care
1939 if (ELF_ST_TYPE (isym->st_info) != STT_FUNC)
1942 /* Tack on an ID so we can uniquely identify this
1943 local symbol in the global hash table. */
1944 amt = strlen (sym_name) + 10;
1945 new_name = bfd_malloc (amt);
1949 sprintf (new_name, "%s_%08x",
1950 sym_name, (int) sym_sec);
1951 sym_name = new_name;
1953 elftab = &hash_table->static_hash_table->root;
1954 hash = ((struct elf32_mn10300_link_hash_entry *)
1955 elf_link_hash_lookup (elftab, sym_name,
1956 TRUE, TRUE, FALSE));
1961 r_index -= symtab_hdr->sh_info;
1962 hash = (struct elf32_mn10300_link_hash_entry *)
1963 elf_sym_hashes (input_bfd)[r_index];
1966 /* If this is not a "call" instruction, then we
1967 should convert "call" instructions to "calls"
1969 code = bfd_get_8 (input_bfd,
1970 contents + irel->r_offset - 1);
1971 if (code != 0xdd && code != 0xcd)
1972 hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1974 /* If this is a jump/call, then bump the
1975 direct_calls counter. Else force "call" to
1976 "calls" conversions. */
1977 if (r_type == R_MN10300_PCREL32
1978 || r_type == R_MN10300_PLT32
1979 || r_type == R_MN10300_PLT16
1980 || r_type == R_MN10300_PCREL16)
1981 hash->direct_calls++;
1983 hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1987 /* Now look at the actual contents to get the stack size,
1988 and a list of what registers were saved in the prologue
1990 if ((section->flags & SEC_CODE) != 0)
1992 Elf_Internal_Sym *isym, *isymend;
1993 unsigned int sec_shndx;
1994 struct elf_link_hash_entry **hashes;
1995 struct elf_link_hash_entry **end_hashes;
1996 unsigned int symcount;
1998 sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
2001 /* Look at each function defined in this section and
2002 update info for that function. */
2003 isymend = isymbuf + symtab_hdr->sh_info;
2004 for (isym = isymbuf; isym < isymend; isym++)
2006 if (isym->st_shndx == sec_shndx
2007 && ELF_ST_TYPE (isym->st_info) == STT_FUNC)
2009 struct elf_link_hash_table *elftab;
2012 if (isym->st_shndx == SHN_UNDEF)
2013 sym_sec = bfd_und_section_ptr;
2014 else if (isym->st_shndx == SHN_ABS)
2015 sym_sec = bfd_abs_section_ptr;
2016 else if (isym->st_shndx == SHN_COMMON)
2017 sym_sec = bfd_com_section_ptr;
2020 = bfd_section_from_elf_index (input_bfd,
2023 sym_name = (bfd_elf_string_from_elf_section
2024 (input_bfd, symtab_hdr->sh_link,
2027 /* Tack on an ID so we can uniquely identify this
2028 local symbol in the global hash table. */
2029 amt = strlen (sym_name) + 10;
2030 new_name = bfd_malloc (amt);
2034 sprintf (new_name, "%s_%08x",
2035 sym_name, (int) sym_sec);
2036 sym_name = new_name;
2038 elftab = &hash_table->static_hash_table->root;
2039 hash = ((struct elf32_mn10300_link_hash_entry *)
2040 elf_link_hash_lookup (elftab, sym_name,
2041 TRUE, TRUE, FALSE));
2043 compute_function_info (input_bfd, hash,
2044 isym->st_value, contents);
2048 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2049 - symtab_hdr->sh_info);
2050 hashes = elf_sym_hashes (input_bfd);
2051 end_hashes = hashes + symcount;
2052 for (; hashes < end_hashes; hashes++)
2054 hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
2055 if ((hash->root.root.type == bfd_link_hash_defined
2056 || hash->root.root.type == bfd_link_hash_defweak)
2057 && hash->root.root.u.def.section == section
2058 && ELF_ST_TYPE (isym->st_info) == STT_FUNC)
2059 compute_function_info (input_bfd, hash,
2060 (hash)->root.root.u.def.value,
2065 /* Cache or free any memory we allocated for the relocs. */
2066 if (internal_relocs != NULL
2067 && elf_section_data (section)->relocs != internal_relocs)
2068 free (internal_relocs);
2069 internal_relocs = NULL;
2071 /* Cache or free any memory we allocated for the contents. */
2072 if (contents != NULL
2073 && elf_section_data (section)->this_hdr.contents != contents)
2075 if (! link_info->keep_memory)
2079 /* Cache the section contents for elf_link_input_bfd. */
2080 elf_section_data (section)->this_hdr.contents = contents;
2086 /* Cache or free any memory we allocated for the symbols. */
2088 && symtab_hdr->contents != (unsigned char *) isymbuf)
2090 if (! link_info->keep_memory)
2094 /* Cache the symbols for elf_link_input_bfd. */
2095 symtab_hdr->contents = (unsigned char *) isymbuf;
2101 /* Now iterate on each symbol in the hash table and perform
2102 the final initialization steps on each. */
2103 elf32_mn10300_link_hash_traverse (hash_table,
2104 elf32_mn10300_finish_hash_table_entry,
2106 elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
2107 elf32_mn10300_finish_hash_table_entry,
2110 /* All entries in the hash table are fully initialized. */
2111 hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED;
2113 /* Now that everything has been initialized, go through each
2114 code section and delete any prologue insns which will be
2115 redundant because their operations will be performed by
2116 a "call" instruction. */
2117 for (input_bfd = link_info->input_bfds;
2119 input_bfd = input_bfd->link_next)
2121 /* We're going to need all the local symbols for each bfd. */
2122 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2123 if (symtab_hdr->sh_info != 0)
2125 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2126 if (isymbuf == NULL)
2127 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2128 symtab_hdr->sh_info, 0,
2130 if (isymbuf == NULL)
2134 /* Walk over each section in this bfd. */
2135 for (section = input_bfd->sections;
2137 section = section->next)
2139 unsigned int sec_shndx;
2140 Elf_Internal_Sym *isym, *isymend;
2141 struct elf_link_hash_entry **hashes;
2142 struct elf_link_hash_entry **end_hashes;
2143 unsigned int symcount;
2145 /* Skip non-code sections and empty sections. */
2146 if ((section->flags & SEC_CODE) == 0 || section->_raw_size == 0)
2149 if (section->reloc_count != 0)
2151 /* Get a copy of the native relocations. */
2152 internal_relocs = (_bfd_elf_link_read_relocs
2153 (input_bfd, section, (PTR) NULL,
2154 (Elf_Internal_Rela *) NULL,
2155 link_info->keep_memory));
2156 if (internal_relocs == NULL)
2160 /* Get cached copy of section contents if it exists. */
2161 if (elf_section_data (section)->this_hdr.contents != NULL)
2162 contents = elf_section_data (section)->this_hdr.contents;
2165 /* Go get them off disk. */
2166 contents = (bfd_byte *) bfd_malloc (section->_raw_size);
2167 if (contents == NULL)
2170 if (!bfd_get_section_contents (input_bfd, section,
2171 contents, (file_ptr) 0,
2172 section->_raw_size))
2176 sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
2179 /* Now look for any function in this section which needs
2180 insns deleted from its prologue. */
2181 isymend = isymbuf + symtab_hdr->sh_info;
2182 for (isym = isymbuf; isym < isymend; isym++)
2184 struct elf32_mn10300_link_hash_entry *sym_hash;
2185 asection *sym_sec = NULL;
2186 const char *sym_name;
2188 struct elf_link_hash_table *elftab;
2191 if (isym->st_shndx != sec_shndx)
2194 if (isym->st_shndx == SHN_UNDEF)
2195 sym_sec = bfd_und_section_ptr;
2196 else if (isym->st_shndx == SHN_ABS)
2197 sym_sec = bfd_abs_section_ptr;
2198 else if (isym->st_shndx == SHN_COMMON)
2199 sym_sec = bfd_com_section_ptr;
2202 = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
2205 = bfd_elf_string_from_elf_section (input_bfd,
2206 symtab_hdr->sh_link,
2209 /* Tack on an ID so we can uniquely identify this
2210 local symbol in the global hash table. */
2211 amt = strlen (sym_name) + 10;
2212 new_name = bfd_malloc (amt);
2215 sprintf (new_name, "%s_%08x", sym_name, (int) sym_sec);
2216 sym_name = new_name;
2218 elftab = &hash_table->static_hash_table->root;
2219 sym_hash = ((struct elf32_mn10300_link_hash_entry *)
2220 elf_link_hash_lookup (elftab, sym_name,
2221 FALSE, FALSE, FALSE));
2224 if (sym_hash == NULL)
2227 if (! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
2228 && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
2232 /* Note that we've changed things. */
2233 elf_section_data (section)->relocs = internal_relocs;
2234 elf_section_data (section)->this_hdr.contents = contents;
2235 symtab_hdr->contents = (unsigned char *) isymbuf;
2237 /* Count how many bytes we're going to delete. */
2238 if (sym_hash->movm_args)
2241 if (sym_hash->stack_size && sym_hash->stack_size <= 128)
2243 else if (sym_hash->stack_size
2244 && sym_hash->stack_size < 256)
2247 /* Note that we've deleted prologue bytes for this
2249 sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
2251 /* Actually delete the bytes. */
2252 if (!mn10300_elf_relax_delete_bytes (input_bfd,
2258 /* Something changed. Not strictly necessary, but
2259 may lead to more relaxing opportunities. */
2264 /* Look for any global functions in this section which
2265 need insns deleted from their prologues. */
2266 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2267 - symtab_hdr->sh_info);
2268 hashes = elf_sym_hashes (input_bfd);
2269 end_hashes = hashes + symcount;
2270 for (; hashes < end_hashes; hashes++)
2272 struct elf32_mn10300_link_hash_entry *sym_hash;
2274 sym_hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
2275 if ((sym_hash->root.root.type == bfd_link_hash_defined
2276 || sym_hash->root.root.type == bfd_link_hash_defweak)
2277 && sym_hash->root.root.u.def.section == section
2278 && ! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
2279 && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
2284 /* Note that we've changed things. */
2285 elf_section_data (section)->relocs = internal_relocs;
2286 elf_section_data (section)->this_hdr.contents = contents;
2287 symtab_hdr->contents = (unsigned char *) isymbuf;
2289 /* Count how many bytes we're going to delete. */
2290 if (sym_hash->movm_args)
2293 if (sym_hash->stack_size && sym_hash->stack_size <= 128)
2295 else if (sym_hash->stack_size
2296 && sym_hash->stack_size < 256)
2299 /* Note that we've deleted prologue bytes for this
2301 sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
2303 /* Actually delete the bytes. */
2304 symval = sym_hash->root.root.u.def.value;
2305 if (!mn10300_elf_relax_delete_bytes (input_bfd,
2311 /* Something changed. Not strictly necessary, but
2312 may lead to more relaxing opportunities. */
2317 /* Cache or free any memory we allocated for the relocs. */
2318 if (internal_relocs != NULL
2319 && elf_section_data (section)->relocs != internal_relocs)
2320 free (internal_relocs);
2321 internal_relocs = NULL;
2323 /* Cache or free any memory we allocated for the contents. */
2324 if (contents != NULL
2325 && elf_section_data (section)->this_hdr.contents != contents)
2327 if (! link_info->keep_memory)
2331 /* Cache the section contents for elf_link_input_bfd. */
2332 elf_section_data (section)->this_hdr.contents = contents;
2338 /* Cache or free any memory we allocated for the symbols. */
2340 && symtab_hdr->contents != (unsigned char *) isymbuf)
2342 if (! link_info->keep_memory)
2346 /* Cache the symbols for elf_link_input_bfd. */
2347 symtab_hdr->contents = (unsigned char *) isymbuf;
2354 /* (Re)initialize for the basic instruction shortening/relaxing pass. */
2356 internal_relocs = NULL;
2358 /* For error_return. */
2361 /* We don't have to do anything for a relocatable link, if
2362 this section does not have relocs, or if this is not a
2364 if (link_info->relocatable
2365 || (sec->flags & SEC_RELOC) == 0
2366 || sec->reloc_count == 0
2367 || (sec->flags & SEC_CODE) == 0)
2370 /* If this is the first time we have been called for this section,
2371 initialize the cooked size. */
2372 if (sec->_cooked_size == 0)
2373 sec->_cooked_size = sec->_raw_size;
2375 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2377 /* Get a copy of the native relocations. */
2378 internal_relocs = (_bfd_elf_link_read_relocs
2379 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
2380 link_info->keep_memory));
2381 if (internal_relocs == NULL)
2384 /* Walk through them looking for relaxing opportunities. */
2385 irelend = internal_relocs + sec->reloc_count;
2386 for (irel = internal_relocs; irel < irelend; irel++)
2389 struct elf32_mn10300_link_hash_entry *h = NULL;
2391 /* If this isn't something that can be relaxed, then ignore
2393 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_NONE
2394 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8
2395 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_MAX)
2398 /* Get the section contents if we haven't done so already. */
2399 if (contents == NULL)
2401 /* Get cached copy if it exists. */
2402 if (elf_section_data (sec)->this_hdr.contents != NULL)
2403 contents = elf_section_data (sec)->this_hdr.contents;
2406 /* Go get them off disk. */
2407 contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
2408 if (contents == NULL)
2411 if (! bfd_get_section_contents (abfd, sec, contents,
2412 (file_ptr) 0, sec->_raw_size))
2417 /* Read this BFD's symbols if we haven't done so already. */
2418 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
2420 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2421 if (isymbuf == NULL)
2422 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
2423 symtab_hdr->sh_info, 0,
2425 if (isymbuf == NULL)
2429 /* Get the value of the symbol referred to by the reloc. */
2430 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
2432 Elf_Internal_Sym *isym;
2433 asection *sym_sec = NULL;
2434 const char *sym_name;
2437 /* A local symbol. */
2438 isym = isymbuf + ELF32_R_SYM (irel->r_info);
2439 if (isym->st_shndx == SHN_UNDEF)
2440 sym_sec = bfd_und_section_ptr;
2441 else if (isym->st_shndx == SHN_ABS)
2442 sym_sec = bfd_abs_section_ptr;
2443 else if (isym->st_shndx == SHN_COMMON)
2444 sym_sec = bfd_com_section_ptr;
2446 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2448 symval = (isym->st_value
2449 + sym_sec->output_section->vma
2450 + sym_sec->output_offset);
2451 sym_name = bfd_elf_string_from_elf_section (abfd,
2452 symtab_hdr->sh_link,
2455 /* Tack on an ID so we can uniquely identify this
2456 local symbol in the global hash table. */
2457 new_name = bfd_malloc ((bfd_size_type) strlen (sym_name) + 10);
2460 sprintf (new_name, "%s_%08x", sym_name, (int) sym_sec);
2461 sym_name = new_name;
2463 h = (struct elf32_mn10300_link_hash_entry *)
2464 elf_link_hash_lookup (&hash_table->static_hash_table->root,
2465 sym_name, FALSE, FALSE, FALSE);
2472 /* An external symbol. */
2473 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2474 h = (struct elf32_mn10300_link_hash_entry *)
2475 (elf_sym_hashes (abfd)[indx]);
2476 BFD_ASSERT (h != NULL);
2477 if (h->root.root.type != bfd_link_hash_defined
2478 && h->root.root.type != bfd_link_hash_defweak)
2480 /* This appears to be a reference to an undefined
2481 symbol. Just ignore it--it will be caught by the
2482 regular reloc processing. */
2486 symval = (h->root.root.u.def.value
2487 + h->root.root.u.def.section->output_section->vma
2488 + h->root.root.u.def.section->output_offset);
2491 /* For simplicity of coding, we are going to modify the section
2492 contents, the section relocs, and the BFD symbol table. We
2493 must tell the rest of the code not to free up this
2494 information. It would be possible to instead create a table
2495 of changes which have to be made, as is done in coff-mips.c;
2496 that would be more work, but would require less memory when
2497 the linker is run. */
2499 /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative
2500 branch/call, also deal with "call" -> "calls" conversions and
2501 insertion of prologue data into "call" instructions. */
2502 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32
2503 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32)
2505 bfd_vma value = symval;
2507 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32
2509 && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
2510 && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
2511 && h->root.plt.offset != (bfd_vma) -1)
2515 splt = bfd_get_section_by_name (elf_hash_table (link_info)
2518 value = ((splt->output_section->vma
2519 + splt->output_offset
2520 + h->root.plt.offset)
2521 - (sec->output_section->vma
2522 + sec->output_offset
2526 /* If we've got a "call" instruction that needs to be turned
2527 into a "calls" instruction, do so now. It saves a byte. */
2528 if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
2532 /* Get the opcode. */
2533 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2535 /* Make sure we're working with a "call" instruction! */
2538 /* Note that we've changed the relocs, section contents,
2540 elf_section_data (sec)->relocs = internal_relocs;
2541 elf_section_data (sec)->this_hdr.contents = contents;
2542 symtab_hdr->contents = (unsigned char *) isymbuf;
2544 /* Fix the opcode. */
2545 bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1);
2546 bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
2548 /* Fix irel->r_offset and irel->r_addend. */
2549 irel->r_offset += 1;
2550 irel->r_addend += 1;
2552 /* Delete one byte of data. */
2553 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2554 irel->r_offset + 3, 1))
2557 /* That will change things, so, we should relax again.
2558 Note that this is not required, and it may be slow. */
2564 /* We've got a "call" instruction which needs some data
2565 from target function filled in. */
2568 /* Get the opcode. */
2569 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2571 /* Insert data from the target function into the "call"
2572 instruction if needed. */
2575 bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 4);
2576 bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
2577 contents + irel->r_offset + 5);
2581 /* Deal with pc-relative gunk. */
2582 value -= (sec->output_section->vma + sec->output_offset);
2583 value -= irel->r_offset;
2584 value += irel->r_addend;
2586 /* See if the value will fit in 16 bits, note the high value is
2587 0x7fff + 2 as the target will be two bytes closer if we are
2589 if ((long) value < 0x8001 && (long) value > -0x8000)
2593 /* Get the opcode. */
2594 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2596 if (code != 0xdc && code != 0xdd && code != 0xff)
2599 /* Note that we've changed the relocs, section contents, etc. */
2600 elf_section_data (sec)->relocs = internal_relocs;
2601 elf_section_data (sec)->this_hdr.contents = contents;
2602 symtab_hdr->contents = (unsigned char *) isymbuf;
2604 /* Fix the opcode. */
2606 bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1);
2607 else if (code == 0xdd)
2608 bfd_put_8 (abfd, 0xcd, contents + irel->r_offset - 1);
2609 else if (code == 0xff)
2610 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
2612 /* Fix the relocation's type. */
2613 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2614 (ELF32_R_TYPE (irel->r_info)
2615 == (int) R_MN10300_PLT32)
2619 /* Delete two bytes of data. */
2620 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2621 irel->r_offset + 1, 2))
2624 /* That will change things, so, we should relax again.
2625 Note that this is not required, and it may be slow. */
2630 /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative
2632 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL16)
2634 bfd_vma value = symval;
2636 /* If we've got a "call" instruction that needs to be turned
2637 into a "calls" instruction, do so now. It saves a byte. */
2638 if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
2642 /* Get the opcode. */
2643 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2645 /* Make sure we're working with a "call" instruction! */
2648 /* Note that we've changed the relocs, section contents,
2650 elf_section_data (sec)->relocs = internal_relocs;
2651 elf_section_data (sec)->this_hdr.contents = contents;
2652 symtab_hdr->contents = (unsigned char *) isymbuf;
2654 /* Fix the opcode. */
2655 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1);
2656 bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
2658 /* Fix irel->r_offset and irel->r_addend. */
2659 irel->r_offset += 1;
2660 irel->r_addend += 1;
2662 /* Delete one byte of data. */
2663 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2664 irel->r_offset + 1, 1))
2667 /* That will change things, so, we should relax again.
2668 Note that this is not required, and it may be slow. */
2676 /* Get the opcode. */
2677 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2679 /* Insert data from the target function into the "call"
2680 instruction if needed. */
2683 bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 2);
2684 bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
2685 contents + irel->r_offset + 3);
2689 /* Deal with pc-relative gunk. */
2690 value -= (sec->output_section->vma + sec->output_offset);
2691 value -= irel->r_offset;
2692 value += irel->r_addend;
2694 /* See if the value will fit in 8 bits, note the high value is
2695 0x7f + 1 as the target will be one bytes closer if we are
2697 if ((long) value < 0x80 && (long) value > -0x80)
2701 /* Get the opcode. */
2702 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2707 /* Note that we've changed the relocs, section contents, etc. */
2708 elf_section_data (sec)->relocs = internal_relocs;
2709 elf_section_data (sec)->this_hdr.contents = contents;
2710 symtab_hdr->contents = (unsigned char *) isymbuf;
2712 /* Fix the opcode. */
2713 bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1);
2715 /* Fix the relocation's type. */
2716 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2719 /* Delete one byte of data. */
2720 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2721 irel->r_offset + 1, 1))
2724 /* That will change things, so, we should relax again.
2725 Note that this is not required, and it may be slow. */
2730 /* Try to eliminate an unconditional 8 bit pc-relative branch
2731 which immediately follows a conditional 8 bit pc-relative
2732 branch around the unconditional branch.
2739 This happens when the bCC can't reach lab2 at assembly time,
2740 but due to other relaxations it can reach at link time. */
2741 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8)
2743 Elf_Internal_Rela *nrel;
2744 bfd_vma value = symval;
2747 /* Deal with pc-relative gunk. */
2748 value -= (sec->output_section->vma + sec->output_offset);
2749 value -= irel->r_offset;
2750 value += irel->r_addend;
2752 /* Do nothing if this reloc is the last byte in the section. */
2753 if (irel->r_offset == sec->_cooked_size)
2756 /* See if the next instruction is an unconditional pc-relative
2757 branch, more often than not this test will fail, so we
2758 test it first to speed things up. */
2759 code = bfd_get_8 (abfd, contents + irel->r_offset + 1);
2763 /* Also make sure the next relocation applies to the next
2764 instruction and that it's a pc-relative 8 bit branch. */
2767 || irel->r_offset + 2 != nrel->r_offset
2768 || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10300_PCREL8)
2771 /* Make sure our destination immediately follows the
2772 unconditional branch. */
2773 if (symval != (sec->output_section->vma + sec->output_offset
2774 + irel->r_offset + 3))
2777 /* Now make sure we are a conditional branch. This may not
2778 be necessary, but why take the chance.
2780 Note these checks assume that R_MN10300_PCREL8 relocs
2781 only occur on bCC and bCCx insns. If they occured
2782 elsewhere, we'd need to know the start of this insn
2783 for this check to be accurate. */
2784 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2785 if (code != 0xc0 && code != 0xc1 && code != 0xc2
2786 && code != 0xc3 && code != 0xc4 && code != 0xc5
2787 && code != 0xc6 && code != 0xc7 && code != 0xc8
2788 && code != 0xc9 && code != 0xe8 && code != 0xe9
2789 && code != 0xea && code != 0xeb)
2792 /* We also have to be sure there is no symbol/label
2793 at the unconditional branch. */
2794 if (mn10300_elf_symbol_address_p (abfd, sec, isymbuf,
2795 irel->r_offset + 1))
2798 /* Note that we've changed the relocs, section contents, etc. */
2799 elf_section_data (sec)->relocs = internal_relocs;
2800 elf_section_data (sec)->this_hdr.contents = contents;
2801 symtab_hdr->contents = (unsigned char *) isymbuf;
2803 /* Reverse the condition of the first branch. */
2849 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
2851 /* Set the reloc type and symbol for the first branch
2852 from the second branch. */
2853 irel->r_info = nrel->r_info;
2855 /* Make the reloc for the second branch a null reloc. */
2856 nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info),
2859 /* Delete two bytes of data. */
2860 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2861 irel->r_offset + 1, 2))
2864 /* That will change things, so, we should relax again.
2865 Note that this is not required, and it may be slow. */
2869 /* Try to turn a 24 immediate, displacement or absolute address
2870 into a 8 immediate, displacement or absolute address. */
2871 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_24)
2873 bfd_vma value = symval;
2874 value += irel->r_addend;
2876 /* See if the value will fit in 8 bits. */
2877 if ((long) value < 0x7f && (long) value > -0x80)
2881 /* AM33 insns which have 24 operands are 6 bytes long and
2882 will have 0xfd as the first byte. */
2884 /* Get the first opcode. */
2885 code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
2889 /* Get the second opcode. */
2890 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
2892 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
2893 equivalent instructions exists. */
2894 if (code != 0x6b && code != 0x7b
2895 && code != 0x8b && code != 0x9b
2896 && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
2897 || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
2898 || (code & 0x0f) == 0x0e))
2900 /* Not safe if the high bit is on as relaxing may
2901 move the value out of high mem and thus not fit
2902 in a signed 8bit value. This is currently over
2904 if ((value & 0x80) == 0)
2906 /* Note that we've changed the relocation contents,
2908 elf_section_data (sec)->relocs = internal_relocs;
2909 elf_section_data (sec)->this_hdr.contents = contents;
2910 symtab_hdr->contents = (unsigned char *) isymbuf;
2912 /* Fix the opcode. */
2913 bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3);
2914 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
2916 /* Fix the relocation's type. */
2918 ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2921 /* Delete two bytes of data. */
2922 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2923 irel->r_offset + 1, 2))
2926 /* That will change things, so, we should relax
2927 again. Note that this is not required, and it
2937 /* Try to turn a 32bit immediate, displacement or absolute address
2938 into a 16bit immediate, displacement or absolute address. */
2939 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32
2940 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32
2941 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32
2942 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32)
2944 bfd_vma value = symval;
2946 if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32)
2950 sgot = bfd_get_section_by_name (elf_hash_table (link_info)
2953 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32)
2955 value = sgot->output_offset;
2958 value += h->root.got.offset;
2960 value += (elf_local_got_offsets
2961 (abfd)[ELF32_R_SYM (irel->r_info)]);
2963 else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32)
2964 value -= sgot->output_section->vma;
2965 else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32)
2966 value = (sgot->output_section->vma
2967 - (sec->output_section->vma
2968 + sec->output_offset
2974 value += irel->r_addend;
2976 /* See if the value will fit in 24 bits.
2977 We allow any 16bit match here. We prune those we can't
2979 if ((long) value < 0x7fffff && (long) value > -0x800000)
2983 /* AM33 insns which have 32bit operands are 7 bytes long and
2984 will have 0xfe as the first byte. */
2986 /* Get the first opcode. */
2987 code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
2991 /* Get the second opcode. */
2992 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
2994 /* All the am33 32 -> 24 relaxing possibilities. */
2995 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
2996 equivalent instructions exists. */
2997 if (code != 0x6b && code != 0x7b
2998 && code != 0x8b && code != 0x9b
2999 && (ELF32_R_TYPE (irel->r_info)
3000 != (int) R_MN10300_GOTPC32)
3001 && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
3002 || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
3003 || (code & 0x0f) == 0x0e))
3005 /* Not safe if the high bit is on as relaxing may
3006 move the value out of high mem and thus not fit
3007 in a signed 16bit value. This is currently over
3009 if ((value & 0x8000) == 0)
3011 /* Note that we've changed the relocation contents,
3013 elf_section_data (sec)->relocs = internal_relocs;
3014 elf_section_data (sec)->this_hdr.contents = contents;
3015 symtab_hdr->contents = (unsigned char *) isymbuf;
3017 /* Fix the opcode. */
3018 bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3);
3019 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3021 /* Fix the relocation's type. */
3023 ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3024 (ELF32_R_TYPE (irel->r_info)
3025 == (int) R_MN10300_GOTOFF32)
3026 ? R_MN10300_GOTOFF24
3027 : (ELF32_R_TYPE (irel->r_info)
3028 == (int) R_MN10300_GOT32)
3032 /* Delete one byte of data. */
3033 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3034 irel->r_offset + 3, 1))
3037 /* That will change things, so, we should relax
3038 again. Note that this is not required, and it
3047 /* See if the value will fit in 16 bits.
3048 We allow any 16bit match here. We prune those we can't
3050 if ((long) value < 0x7fff && (long) value > -0x8000)
3054 /* Most insns which have 32bit operands are 6 bytes long;
3055 exceptions are pcrel insns and bit insns.
3057 We handle pcrel insns above. We don't bother trying
3058 to handle the bit insns here.
3060 The first byte of the remaining insns will be 0xfc. */
3062 /* Get the first opcode. */
3063 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
3068 /* Get the second opcode. */
3069 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3071 if ((code & 0xf0) < 0x80)
3072 switch (code & 0xf0)
3074 /* mov (d32,am),dn -> mov (d32,am),dn
3075 mov dm,(d32,am) -> mov dn,(d32,am)
3076 mov (d32,am),an -> mov (d32,am),an
3077 mov dm,(d32,am) -> mov dn,(d32,am)
3078 movbu (d32,am),dn -> movbu (d32,am),dn
3079 movbu dm,(d32,am) -> movbu dn,(d32,am)
3080 movhu (d32,am),dn -> movhu (d32,am),dn
3081 movhu dm,(d32,am) -> movhu dn,(d32,am) */
3090 /* Not safe if the high bit is on as relaxing may
3091 move the value out of high mem and thus not fit
3092 in a signed 16bit value. */
3094 && (value & 0x8000))
3097 /* Note that we've changed the relocation contents, etc. */
3098 elf_section_data (sec)->relocs = internal_relocs;
3099 elf_section_data (sec)->this_hdr.contents = contents;
3100 symtab_hdr->contents = (unsigned char *) isymbuf;
3102 /* Fix the opcode. */
3103 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3104 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3106 /* Fix the relocation's type. */
3107 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3108 (ELF32_R_TYPE (irel->r_info)
3109 == (int) R_MN10300_GOTOFF32)
3110 ? R_MN10300_GOTOFF16
3111 : (ELF32_R_TYPE (irel->r_info)
3112 == (int) R_MN10300_GOT32)
3114 : (ELF32_R_TYPE (irel->r_info)
3115 == (int) R_MN10300_GOTPC32)
3116 ? R_MN10300_GOTPC16 :
3119 /* Delete two bytes of data. */
3120 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3121 irel->r_offset + 2, 2))
3124 /* That will change things, so, we should relax again.
3125 Note that this is not required, and it may be slow. */
3129 else if ((code & 0xf0) == 0x80
3130 || (code & 0xf0) == 0x90)
3131 switch (code & 0xf3)
3133 /* mov dn,(abs32) -> mov dn,(abs16)
3134 movbu dn,(abs32) -> movbu dn,(abs16)
3135 movhu dn,(abs32) -> movhu dn,(abs16) */
3139 /* Note that we've changed the relocation contents, etc. */
3140 elf_section_data (sec)->relocs = internal_relocs;
3141 elf_section_data (sec)->this_hdr.contents = contents;
3142 symtab_hdr->contents = (unsigned char *) isymbuf;
3144 if ((code & 0xf3) == 0x81)
3145 code = 0x01 + (code & 0x0c);
3146 else if ((code & 0xf3) == 0x82)
3147 code = 0x02 + (code & 0x0c);
3148 else if ((code & 0xf3) == 0x83)
3149 code = 0x03 + (code & 0x0c);
3153 /* Fix the opcode. */
3154 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3156 /* Fix the relocation's type. */
3157 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3158 (ELF32_R_TYPE (irel->r_info)
3159 == (int) R_MN10300_GOTOFF32)
3160 ? R_MN10300_GOTOFF16
3161 : (ELF32_R_TYPE (irel->r_info)
3162 == (int) R_MN10300_GOT32)
3164 : (ELF32_R_TYPE (irel->r_info)
3165 == (int) R_MN10300_GOTPC32)
3166 ? R_MN10300_GOTPC16 :
3169 /* The opcode got shorter too, so we have to fix the
3170 addend and offset too! */
3171 irel->r_offset -= 1;
3173 /* Delete three bytes of data. */
3174 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3175 irel->r_offset + 1, 3))
3178 /* That will change things, so, we should relax again.
3179 Note that this is not required, and it may be slow. */
3183 /* mov am,(abs32) -> mov am,(abs16)
3184 mov am,(d32,sp) -> mov am,(d16,sp)
3185 mov dm,(d32,sp) -> mov dm,(d32,sp)
3186 movbu dm,(d32,sp) -> movbu dm,(d32,sp)
3187 movhu dm,(d32,sp) -> movhu dm,(d32,sp) */
3193 /* sp-based offsets are zero-extended. */
3194 if (code >= 0x90 && code <= 0x93
3198 /* Note that we've changed the relocation contents, etc. */
3199 elf_section_data (sec)->relocs = internal_relocs;
3200 elf_section_data (sec)->this_hdr.contents = contents;
3201 symtab_hdr->contents = (unsigned char *) isymbuf;
3203 /* Fix the opcode. */
3204 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3205 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3207 /* Fix the relocation's type. */
3208 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3209 (ELF32_R_TYPE (irel->r_info)
3210 == (int) R_MN10300_GOTOFF32)
3211 ? R_MN10300_GOTOFF16
3212 : (ELF32_R_TYPE (irel->r_info)
3213 == (int) R_MN10300_GOT32)
3215 : (ELF32_R_TYPE (irel->r_info)
3216 == (int) R_MN10300_GOTPC32)
3217 ? R_MN10300_GOTPC16 :
3220 /* Delete two bytes of data. */
3221 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3222 irel->r_offset + 2, 2))
3225 /* That will change things, so, we should relax again.
3226 Note that this is not required, and it may be slow. */
3230 else if ((code & 0xf0) < 0xf0)
3231 switch (code & 0xfc)
3233 /* mov imm32,dn -> mov imm16,dn
3234 mov imm32,an -> mov imm16,an
3235 mov (abs32),dn -> mov (abs16),dn
3236 movbu (abs32),dn -> movbu (abs16),dn
3237 movhu (abs32),dn -> movhu (abs16),dn */
3243 /* Not safe if the high bit is on as relaxing may
3244 move the value out of high mem and thus not fit
3245 in a signed 16bit value. */
3247 && (value & 0x8000))
3250 /* mov imm16, an zero-extends the immediate. */
3255 /* Note that we've changed the relocation contents, etc. */
3256 elf_section_data (sec)->relocs = internal_relocs;
3257 elf_section_data (sec)->this_hdr.contents = contents;
3258 symtab_hdr->contents = (unsigned char *) isymbuf;
3260 if ((code & 0xfc) == 0xcc)
3261 code = 0x2c + (code & 0x03);
3262 else if ((code & 0xfc) == 0xdc)
3263 code = 0x24 + (code & 0x03);
3264 else if ((code & 0xfc) == 0xa4)
3265 code = 0x30 + (code & 0x03);
3266 else if ((code & 0xfc) == 0xa8)
3267 code = 0x34 + (code & 0x03);
3268 else if ((code & 0xfc) == 0xac)
3269 code = 0x38 + (code & 0x03);
3273 /* Fix the opcode. */
3274 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3276 /* Fix the relocation's type. */
3277 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3278 (ELF32_R_TYPE (irel->r_info)
3279 == (int) R_MN10300_GOTOFF32)
3280 ? R_MN10300_GOTOFF16
3281 : (ELF32_R_TYPE (irel->r_info)
3282 == (int) R_MN10300_GOT32)
3284 : (ELF32_R_TYPE (irel->r_info)
3285 == (int) R_MN10300_GOTPC32)
3286 ? R_MN10300_GOTPC16 :
3289 /* The opcode got shorter too, so we have to fix the
3290 addend and offset too! */
3291 irel->r_offset -= 1;
3293 /* Delete three bytes of data. */
3294 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3295 irel->r_offset + 1, 3))
3298 /* That will change things, so, we should relax again.
3299 Note that this is not required, and it may be slow. */
3303 /* mov (abs32),an -> mov (abs16),an
3304 mov (d32,sp),an -> mov (d16,sp),an
3305 mov (d32,sp),dn -> mov (d16,sp),dn
3306 movbu (d32,sp),dn -> movbu (d16,sp),dn
3307 movhu (d32,sp),dn -> movhu (d16,sp),dn
3308 add imm32,dn -> add imm16,dn
3309 cmp imm32,dn -> cmp imm16,dn
3310 add imm32,an -> add imm16,an
3311 cmp imm32,an -> cmp imm16,an
3312 and imm32,dn -> and imm16,dn
3313 or imm32,dn -> or imm16,dn
3314 xor imm32,dn -> xor imm16,dn
3315 btst imm32,dn -> btst imm16,dn */
3331 /* cmp imm16, an zero-extends the immediate. */
3336 /* So do sp-based offsets. */
3337 if (code >= 0xb0 && code <= 0xb3
3341 /* Note that we've changed the relocation contents, etc. */
3342 elf_section_data (sec)->relocs = internal_relocs;
3343 elf_section_data (sec)->this_hdr.contents = contents;
3344 symtab_hdr->contents = (unsigned char *) isymbuf;
3346 /* Fix the opcode. */
3347 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3348 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3350 /* Fix the relocation's type. */
3351 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3352 (ELF32_R_TYPE (irel->r_info)
3353 == (int) R_MN10300_GOTOFF32)
3354 ? R_MN10300_GOTOFF16
3355 : (ELF32_R_TYPE (irel->r_info)
3356 == (int) R_MN10300_GOT32)
3358 : (ELF32_R_TYPE (irel->r_info)
3359 == (int) R_MN10300_GOTPC32)
3360 ? R_MN10300_GOTPC16 :
3363 /* Delete two bytes of data. */
3364 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3365 irel->r_offset + 2, 2))
3368 /* That will change things, so, we should relax again.
3369 Note that this is not required, and it may be slow. */
3373 else if (code == 0xfe)
3375 /* add imm32,sp -> add imm16,sp */
3377 /* Note that we've changed the relocation contents, etc. */
3378 elf_section_data (sec)->relocs = internal_relocs;
3379 elf_section_data (sec)->this_hdr.contents = contents;
3380 symtab_hdr->contents = (unsigned char *) isymbuf;
3382 /* Fix the opcode. */
3383 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3384 bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1);
3386 /* Fix the relocation's type. */
3387 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3388 (ELF32_R_TYPE (irel->r_info)
3389 == (int) R_MN10300_GOT32)
3391 : (ELF32_R_TYPE (irel->r_info)
3392 == (int) R_MN10300_GOTOFF32)
3393 ? R_MN10300_GOTOFF16
3394 : (ELF32_R_TYPE (irel->r_info)
3395 == (int) R_MN10300_GOTPC32)
3396 ? R_MN10300_GOTPC16 :
3399 /* Delete two bytes of data. */
3400 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3401 irel->r_offset + 2, 2))
3404 /* That will change things, so, we should relax again.
3405 Note that this is not required, and it may be slow. */
3414 && symtab_hdr->contents != (unsigned char *) isymbuf)
3416 if (! link_info->keep_memory)
3420 /* Cache the symbols for elf_link_input_bfd. */
3421 symtab_hdr->contents = (unsigned char *) isymbuf;
3425 if (contents != NULL
3426 && elf_section_data (sec)->this_hdr.contents != contents)
3428 if (! link_info->keep_memory)
3432 /* Cache the section contents for elf_link_input_bfd. */
3433 elf_section_data (sec)->this_hdr.contents = contents;
3437 if (internal_relocs != NULL
3438 && elf_section_data (sec)->relocs != internal_relocs)
3439 free (internal_relocs);
3445 && symtab_hdr->contents != (unsigned char *) isymbuf)
3447 if (contents != NULL
3448 && elf_section_data (section)->this_hdr.contents != contents)
3450 if (internal_relocs != NULL
3451 && elf_section_data (section)->relocs != internal_relocs)
3452 free (internal_relocs);
3457 /* Compute the stack size and movm arguments for the function
3458 referred to by HASH at address ADDR in section with
3459 contents CONTENTS, store the information in the hash table. */
3461 compute_function_info (abfd, hash, addr, contents)
3463 struct elf32_mn10300_link_hash_entry *hash;
3465 unsigned char *contents;
3467 unsigned char byte1, byte2;
3468 /* We only care about a very small subset of the possible prologue
3469 sequences here. Basically we look for:
3471 movm [d2,d3,a2,a3],sp (optional)
3472 add <size>,sp (optional, and only for sizes which fit in an unsigned
3475 If we find anything else, we quit. */
3477 /* Look for movm [regs],sp */
3478 byte1 = bfd_get_8 (abfd, contents + addr);
3479 byte2 = bfd_get_8 (abfd, contents + addr + 1);
3483 hash->movm_args = byte2;
3485 byte1 = bfd_get_8 (abfd, contents + addr);
3486 byte2 = bfd_get_8 (abfd, contents + addr + 1);
3489 /* Now figure out how much stack space will be allocated by the movm
3490 instruction. We need this kept separate from the function's normal
3492 if (hash->movm_args)
3495 if (hash->movm_args & 0x80)
3496 hash->movm_stack_size += 4;
3499 if (hash->movm_args & 0x40)
3500 hash->movm_stack_size += 4;
3503 if (hash->movm_args & 0x20)
3504 hash->movm_stack_size += 4;
3507 if (hash->movm_args & 0x10)
3508 hash->movm_stack_size += 4;
3510 /* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */
3511 if (hash->movm_args & 0x08)
3512 hash->movm_stack_size += 8 * 4;
3514 if (bfd_get_mach (abfd) == bfd_mach_am33
3515 || bfd_get_mach (abfd) == bfd_mach_am33_2)
3517 /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */
3518 if (hash->movm_args & 0x1)
3519 hash->movm_stack_size += 6 * 4;
3521 /* exreg1 space. e4, e5, e6, e7 */
3522 if (hash->movm_args & 0x2)
3523 hash->movm_stack_size += 4 * 4;
3525 /* exreg0 space. e2, e3 */
3526 if (hash->movm_args & 0x4)
3527 hash->movm_stack_size += 2 * 4;
3531 /* Now look for the two stack adjustment variants. */
3532 if (byte1 == 0xf8 && byte2 == 0xfe)
3534 int temp = bfd_get_8 (abfd, contents + addr + 2);
3535 temp = ((temp & 0xff) ^ (~0x7f)) + 0x80;
3537 hash->stack_size = -temp;
3539 else if (byte1 == 0xfa && byte2 == 0xfe)
3541 int temp = bfd_get_16 (abfd, contents + addr + 2);
3542 temp = ((temp & 0xffff) ^ (~0x7fff)) + 0x8000;
3546 hash->stack_size = temp;
3549 /* If the total stack to be allocated by the call instruction is more
3550 than 255 bytes, then we can't remove the stack adjustment by using
3551 "call" (we might still be able to remove the "movm" instruction. */
3552 if (hash->stack_size + hash->movm_stack_size > 255)
3553 hash->stack_size = 0;
3558 /* Delete some bytes from a section while relaxing. */
3561 mn10300_elf_relax_delete_bytes (abfd, sec, addr, count)
3567 Elf_Internal_Shdr *symtab_hdr;
3568 unsigned int sec_shndx;
3570 Elf_Internal_Rela *irel, *irelend;
3571 Elf_Internal_Rela *irelalign;
3573 Elf_Internal_Sym *isym, *isymend;
3574 struct elf_link_hash_entry **sym_hashes;
3575 struct elf_link_hash_entry **end_hashes;
3576 unsigned int symcount;
3578 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
3580 contents = elf_section_data (sec)->this_hdr.contents;
3582 /* The deletion must stop at the next ALIGN reloc for an aligment
3583 power larger than the number of bytes we are deleting. */
3586 toaddr = sec->_cooked_size;
3588 irel = elf_section_data (sec)->relocs;
3589 irelend = irel + sec->reloc_count;
3591 /* Actually delete the bytes. */
3592 memmove (contents + addr, contents + addr + count,
3593 (size_t) (toaddr - addr - count));
3594 sec->_cooked_size -= count;
3596 /* Adjust all the relocs. */
3597 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
3599 /* Get the new reloc address. */
3600 if ((irel->r_offset > addr
3601 && irel->r_offset < toaddr))
3602 irel->r_offset -= count;
3605 /* Adjust the local symbols defined in this section. */
3606 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3607 isym = (Elf_Internal_Sym *) symtab_hdr->contents;
3608 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
3610 if (isym->st_shndx == sec_shndx
3611 && isym->st_value > addr
3612 && isym->st_value < toaddr)
3613 isym->st_value -= count;
3616 /* Now adjust the global symbols defined in this section. */
3617 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
3618 - symtab_hdr->sh_info);
3619 sym_hashes = elf_sym_hashes (abfd);
3620 end_hashes = sym_hashes + symcount;
3621 for (; sym_hashes < end_hashes; sym_hashes++)
3623 struct elf_link_hash_entry *sym_hash = *sym_hashes;
3624 if ((sym_hash->root.type == bfd_link_hash_defined
3625 || sym_hash->root.type == bfd_link_hash_defweak)
3626 && sym_hash->root.u.def.section == sec
3627 && sym_hash->root.u.def.value > addr
3628 && sym_hash->root.u.def.value < toaddr)
3630 sym_hash->root.u.def.value -= count;
3637 /* Return TRUE if a symbol exists at the given address, else return
3640 mn10300_elf_symbol_address_p (abfd, sec, isym, addr)
3643 Elf_Internal_Sym *isym;
3646 Elf_Internal_Shdr *symtab_hdr;
3647 unsigned int sec_shndx;
3648 Elf_Internal_Sym *isymend;
3649 struct elf_link_hash_entry **sym_hashes;
3650 struct elf_link_hash_entry **end_hashes;
3651 unsigned int symcount;
3653 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
3655 /* Examine all the symbols. */
3656 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3657 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
3659 if (isym->st_shndx == sec_shndx
3660 && isym->st_value == addr)
3664 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
3665 - symtab_hdr->sh_info);
3666 sym_hashes = elf_sym_hashes (abfd);
3667 end_hashes = sym_hashes + symcount;
3668 for (; sym_hashes < end_hashes; sym_hashes++)
3670 struct elf_link_hash_entry *sym_hash = *sym_hashes;
3671 if ((sym_hash->root.type == bfd_link_hash_defined
3672 || sym_hash->root.type == bfd_link_hash_defweak)
3673 && sym_hash->root.u.def.section == sec
3674 && sym_hash->root.u.def.value == addr)
3681 /* This is a version of bfd_generic_get_relocated_section_contents
3682 which uses mn10300_elf_relocate_section. */
3685 mn10300_elf_get_relocated_section_contents (output_bfd, link_info, link_order,
3686 data, relocatable, symbols)
3688 struct bfd_link_info *link_info;
3689 struct bfd_link_order *link_order;
3691 bfd_boolean relocatable;
3694 Elf_Internal_Shdr *symtab_hdr;
3695 asection *input_section = link_order->u.indirect.section;
3696 bfd *input_bfd = input_section->owner;
3697 asection **sections = NULL;
3698 Elf_Internal_Rela *internal_relocs = NULL;
3699 Elf_Internal_Sym *isymbuf = NULL;
3701 /* We only need to handle the case of relaxing, or of having a
3702 particular set of section contents, specially. */
3704 || elf_section_data (input_section)->this_hdr.contents == NULL)
3705 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
3710 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3712 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
3713 (size_t) input_section->_raw_size);
3715 if ((input_section->flags & SEC_RELOC) != 0
3716 && input_section->reloc_count > 0)
3719 Elf_Internal_Sym *isym, *isymend;
3722 internal_relocs = (_bfd_elf_link_read_relocs
3723 (input_bfd, input_section, (PTR) NULL,
3724 (Elf_Internal_Rela *) NULL, FALSE));
3725 if (internal_relocs == NULL)
3728 if (symtab_hdr->sh_info != 0)
3730 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
3731 if (isymbuf == NULL)
3732 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
3733 symtab_hdr->sh_info, 0,
3735 if (isymbuf == NULL)
3739 amt = symtab_hdr->sh_info;
3740 amt *= sizeof (asection *);
3741 sections = (asection **) bfd_malloc (amt);
3742 if (sections == NULL && amt != 0)
3745 isymend = isymbuf + symtab_hdr->sh_info;
3746 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
3750 if (isym->st_shndx == SHN_UNDEF)
3751 isec = bfd_und_section_ptr;
3752 else if (isym->st_shndx == SHN_ABS)
3753 isec = bfd_abs_section_ptr;
3754 else if (isym->st_shndx == SHN_COMMON)
3755 isec = bfd_com_section_ptr;
3757 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
3762 if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd,
3763 input_section, data, internal_relocs,
3767 if (sections != NULL)
3769 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
3771 if (internal_relocs != elf_section_data (input_section)->relocs)
3772 free (internal_relocs);
3778 if (sections != NULL)
3780 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
3782 if (internal_relocs != NULL
3783 && internal_relocs != elf_section_data (input_section)->relocs)
3784 free (internal_relocs);
3788 /* Assorted hash table functions. */
3790 /* Initialize an entry in the link hash table. */
3792 /* Create an entry in an MN10300 ELF linker hash table. */
3794 static struct bfd_hash_entry *
3795 elf32_mn10300_link_hash_newfunc (entry, table, string)
3796 struct bfd_hash_entry *entry;
3797 struct bfd_hash_table *table;
3800 struct elf32_mn10300_link_hash_entry *ret =
3801 (struct elf32_mn10300_link_hash_entry *) entry;
3803 /* Allocate the structure if it has not already been allocated by a
3805 if (ret == (struct elf32_mn10300_link_hash_entry *) NULL)
3806 ret = ((struct elf32_mn10300_link_hash_entry *)
3807 bfd_hash_allocate (table,
3808 sizeof (struct elf32_mn10300_link_hash_entry)));
3809 if (ret == (struct elf32_mn10300_link_hash_entry *) NULL)
3810 return (struct bfd_hash_entry *) ret;
3812 /* Call the allocation method of the superclass. */
3813 ret = ((struct elf32_mn10300_link_hash_entry *)
3814 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
3816 if (ret != (struct elf32_mn10300_link_hash_entry *) NULL)
3818 ret->direct_calls = 0;
3819 ret->stack_size = 0;
3821 ret->movm_stack_size = 0;
3822 ret->pcrel_relocs_copied = NULL;
3826 return (struct bfd_hash_entry *) ret;
3829 /* Create an mn10300 ELF linker hash table. */
3831 static struct bfd_link_hash_table *
3832 elf32_mn10300_link_hash_table_create (abfd)
3835 struct elf32_mn10300_link_hash_table *ret;
3836 bfd_size_type amt = sizeof (struct elf32_mn10300_link_hash_table);
3838 ret = (struct elf32_mn10300_link_hash_table *) bfd_malloc (amt);
3839 if (ret == (struct elf32_mn10300_link_hash_table *) NULL)
3842 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
3843 elf32_mn10300_link_hash_newfunc))
3850 amt = sizeof (struct elf_link_hash_table);
3851 ret->static_hash_table
3852 = (struct elf32_mn10300_link_hash_table *) bfd_malloc (amt);
3853 if (ret->static_hash_table == NULL)
3859 if (! _bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd,
3860 elf32_mn10300_link_hash_newfunc))
3862 free (ret->static_hash_table);
3866 return &ret->root.root;
3869 /* Free an mn10300 ELF linker hash table. */
3872 elf32_mn10300_link_hash_table_free (hash)
3873 struct bfd_link_hash_table *hash;
3875 struct elf32_mn10300_link_hash_table *ret
3876 = (struct elf32_mn10300_link_hash_table *) hash;
3878 _bfd_generic_link_hash_table_free
3879 ((struct bfd_link_hash_table *) ret->static_hash_table);
3880 _bfd_generic_link_hash_table_free
3881 ((struct bfd_link_hash_table *) ret);
3884 static unsigned long
3885 elf_mn10300_mach (flags)
3888 switch (flags & EF_MN10300_MACH)
3890 case E_MN10300_MACH_MN10300:
3892 return bfd_mach_mn10300;
3894 case E_MN10300_MACH_AM33:
3895 return bfd_mach_am33;
3897 case E_MN10300_MACH_AM33_2:
3898 return bfd_mach_am33_2;
3902 /* The final processing done just before writing out a MN10300 ELF object
3903 file. This gets the MN10300 architecture right based on the machine
3907 _bfd_mn10300_elf_final_write_processing (abfd, linker)
3909 bfd_boolean linker ATTRIBUTE_UNUSED;
3913 switch (bfd_get_mach (abfd))
3916 case bfd_mach_mn10300:
3917 val = E_MN10300_MACH_MN10300;
3921 val = E_MN10300_MACH_AM33;
3924 case bfd_mach_am33_2:
3925 val = E_MN10300_MACH_AM33_2;
3929 elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH);
3930 elf_elfheader (abfd)->e_flags |= val;
3934 _bfd_mn10300_elf_object_p (abfd)
3937 bfd_default_set_arch_mach (abfd, bfd_arch_mn10300,
3938 elf_mn10300_mach (elf_elfheader (abfd)->e_flags));
3942 /* Merge backend specific data from an object file to the output
3943 object file when linking. */
3946 _bfd_mn10300_elf_merge_private_bfd_data (ibfd, obfd)
3950 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3951 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3954 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3955 && bfd_get_mach (obfd) < bfd_get_mach (ibfd))
3957 if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3958 bfd_get_mach (ibfd)))
3965 #define PLT0_ENTRY_SIZE 15
3966 #define PLT_ENTRY_SIZE 20
3967 #define PIC_PLT_ENTRY_SIZE 24
3969 static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] =
3971 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */
3972 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */
3973 0xf0, 0xf4, /* jmp (a0) */
3976 static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] =
3978 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */
3979 0xf0, 0xf4, /* jmp (a0) */
3980 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
3981 0xdc, 0, 0, 0, 0, /* jmp .plt0 */
3984 static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] =
3986 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */
3987 0xf0, 0xf4, /* jmp (a0) */
3988 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
3989 0xf8, 0x22, 8, /* mov (8,a2),a0 */
3990 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */
3991 0xf0, 0xf4, /* jmp (a0) */
3994 /* Return size of the first PLT entry. */
3995 #define elf_mn10300_sizeof_plt0(info) \
3996 (info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE)
3998 /* Return size of a PLT entry. */
3999 #define elf_mn10300_sizeof_plt(info) \
4000 (info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE)
4002 /* Return offset of the PLT0 address in an absolute PLT entry. */
4003 #define elf_mn10300_plt_plt0_offset(info) 16
4005 /* Return offset of the linker in PLT0 entry. */
4006 #define elf_mn10300_plt0_linker_offset(info) 2
4008 /* Return offset of the GOT id in PLT0 entry. */
4009 #define elf_mn10300_plt0_gotid_offset(info) 9
4011 /* Return offset of the temporary in PLT entry */
4012 #define elf_mn10300_plt_temp_offset(info) 8
4014 /* Return offset of the symbol in PLT entry. */
4015 #define elf_mn10300_plt_symbol_offset(info) 2
4017 /* Return offset of the relocation in PLT entry. */
4018 #define elf_mn10300_plt_reloc_offset(info) 11
4020 /* The name of the dynamic interpreter. This is put in the .interp
4023 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
4025 /* Create dynamic sections when linking against a dynamic object. */
4028 _bfd_mn10300_elf_create_dynamic_sections (abfd, info)
4030 struct bfd_link_info *info;
4034 const struct elf_backend_data * bed = get_elf_backend_data (abfd);
4037 switch (bed->s->arch_size)
4048 bfd_set_error (bfd_error_bad_value);
4052 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
4053 .rel[a].bss sections. */
4055 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4056 | SEC_LINKER_CREATED);
4058 s = bfd_make_section (abfd,
4059 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt");
4061 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
4062 || ! bfd_set_section_alignment (abfd, s, ptralign))
4065 if (! _bfd_mn10300_elf_create_got_section (abfd, info))
4069 const char * secname;
4074 for (sec = abfd->sections; sec; sec = sec->next)
4076 secflags = bfd_get_section_flags (abfd, sec);
4077 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
4078 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
4081 secname = bfd_get_section_name (abfd, sec);
4082 relname = (char *) bfd_malloc (strlen (secname) + 6);
4083 strcpy (relname, ".rela");
4084 strcat (relname, secname);
4086 s = bfd_make_section (abfd, relname);
4088 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
4089 || ! bfd_set_section_alignment (abfd, s, ptralign))
4094 if (bed->want_dynbss)
4096 /* The .dynbss section is a place to put symbols which are defined
4097 by dynamic objects, are referenced by regular objects, and are
4098 not functions. We must allocate space for them in the process
4099 image and use a R_*_COPY reloc to tell the dynamic linker to
4100 initialize them at run time. The linker script puts the .dynbss
4101 section into the .bss section of the final image. */
4102 s = bfd_make_section (abfd, ".dynbss");
4104 || ! bfd_set_section_flags (abfd, s, SEC_ALLOC))
4107 /* The .rel[a].bss section holds copy relocs. This section is not
4108 normally needed. We need to create it here, though, so that the
4109 linker will map it to an output section. We can't just create it
4110 only if we need it, because we will not know whether we need it
4111 until we have seen all the input files, and the first time the
4112 main linker code calls BFD after examining all the input files
4113 (size_dynamic_sections) the input sections have already been
4114 mapped to the output sections. If the section turns out not to
4115 be needed, we can discard it later. We will never need this
4116 section when generating a shared object, since they do not use
4120 s = bfd_make_section (abfd,
4121 (bed->default_use_rela_p
4122 ? ".rela.bss" : ".rel.bss"));
4124 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
4125 || ! bfd_set_section_alignment (abfd, s, ptralign))
4133 /* Adjust a symbol defined by a dynamic object and referenced by a
4134 regular object. The current definition is in some section of the
4135 dynamic object, but we're not including those sections. We have to
4136 change the definition to something the rest of the link can
4140 _bfd_mn10300_elf_adjust_dynamic_symbol (info, h)
4141 struct bfd_link_info * info;
4142 struct elf_link_hash_entry * h;
4146 unsigned int power_of_two;
4148 dynobj = elf_hash_table (info)->dynobj;
4150 /* Make sure we know what is going on here. */
4151 BFD_ASSERT (dynobj != NULL
4152 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
4153 || h->weakdef != NULL
4154 || ((h->elf_link_hash_flags
4155 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
4156 && (h->elf_link_hash_flags
4157 & ELF_LINK_HASH_REF_REGULAR) != 0
4158 && (h->elf_link_hash_flags
4159 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
4161 /* If this is a function, put it in the procedure linkage table. We
4162 will fill in the contents of the procedure linkage table later,
4163 when we know the address of the .got section. */
4164 if (h->type == STT_FUNC
4165 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
4168 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
4169 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0)
4171 /* This case can occur if we saw a PLT reloc in an input
4172 file, but the symbol was never referred to by a dynamic
4173 object. In such a case, we don't actually need to build
4174 a procedure linkage table, and we can just do a REL32
4176 BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0);
4180 /* Make sure this symbol is output as a dynamic symbol. */
4181 if (h->dynindx == -1)
4183 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
4187 s = bfd_get_section_by_name (dynobj, ".plt");
4188 BFD_ASSERT (s != NULL);
4190 /* If this is the first .plt entry, make room for the special
4192 if (s->_raw_size == 0)
4193 s->_raw_size += elf_mn10300_sizeof_plt0 (info);
4195 /* If this symbol is not defined in a regular file, and we are
4196 not generating a shared library, then set the symbol to this
4197 location in the .plt. This is required to make function
4198 pointers compare as equal between the normal executable and
4199 the shared library. */
4201 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4203 h->root.u.def.section = s;
4204 h->root.u.def.value = s->_raw_size;
4207 h->plt.offset = s->_raw_size;
4209 /* Make room for this entry. */
4210 s->_raw_size += elf_mn10300_sizeof_plt (info);
4212 /* We also need to make an entry in the .got.plt section, which
4213 will be placed in the .got section by the linker script. */
4215 s = bfd_get_section_by_name (dynobj, ".got.plt");
4216 BFD_ASSERT (s != NULL);
4219 /* We also need to make an entry in the .rela.plt section. */
4221 s = bfd_get_section_by_name (dynobj, ".rela.plt");
4222 BFD_ASSERT (s != NULL);
4223 s->_raw_size += sizeof (Elf32_External_Rela);
4228 /* If this is a weak symbol, and there is a real definition, the
4229 processor independent code will have arranged for us to see the
4230 real definition first, and we can just use the same value. */
4231 if (h->weakdef != NULL)
4233 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
4234 || h->weakdef->root.type == bfd_link_hash_defweak);
4235 h->root.u.def.section = h->weakdef->root.u.def.section;
4236 h->root.u.def.value = h->weakdef->root.u.def.value;
4240 /* This is a reference to a symbol defined by a dynamic object which
4241 is not a function. */
4243 /* If we are creating a shared library, we must presume that the
4244 only references to the symbol are via the global offset table.
4245 For such cases we need not do anything here; the relocations will
4246 be handled correctly by relocate_section. */
4250 /* If there are no references to this symbol that do not use the
4251 GOT, we don't need to generate a copy reloc. */
4252 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
4255 /* We must allocate the symbol in our .dynbss section, which will
4256 become part of the .bss section of the executable. There will be
4257 an entry for this symbol in the .dynsym section. The dynamic
4258 object will contain position independent code, so all references
4259 from the dynamic object to this symbol will go through the global
4260 offset table. The dynamic linker will use the .dynsym entry to
4261 determine the address it must put in the global offset table, so
4262 both the dynamic object and the regular object will refer to the
4263 same memory location for the variable. */
4265 s = bfd_get_section_by_name (dynobj, ".dynbss");
4266 BFD_ASSERT (s != NULL);
4268 /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to
4269 copy the initial value out of the dynamic object and into the
4270 runtime process image. We need to remember the offset into the
4271 .rela.bss section we are going to use. */
4272 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4276 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
4277 BFD_ASSERT (srel != NULL);
4278 srel->_raw_size += sizeof (Elf32_External_Rela);
4279 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
4282 /* We need to figure out the alignment required for this symbol. I
4283 have no idea how ELF linkers handle this. */
4284 power_of_two = bfd_log2 (h->size);
4285 if (power_of_two > 3)
4288 /* Apply the required alignment. */
4289 s->_raw_size = BFD_ALIGN (s->_raw_size,
4290 (bfd_size_type) (1 << power_of_two));
4291 if (power_of_two > bfd_get_section_alignment (dynobj, s))
4293 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
4297 /* Define the symbol as being at this point in the section. */
4298 h->root.u.def.section = s;
4299 h->root.u.def.value = s->_raw_size;
4301 /* Increment the section size to make room for the symbol. */
4302 s->_raw_size += h->size;
4307 /* This function is called via elf32_mn10300_link_hash_traverse if we are
4308 creating a shared object with -Bsymbolic. It discards the space
4309 allocated to copy PC relative relocs against symbols which are
4310 defined in regular objects. We allocated space for them in the
4311 check_relocs routine, but we won't fill them in in the
4312 relocate_section routine. */
4315 _bfd_mn10300_elf_discard_copies (h, info)
4316 struct elf32_mn10300_link_hash_entry *h;
4317 struct bfd_link_info *info;
4319 struct elf_mn10300_pcrel_relocs_copied *s;
4321 /* If a symbol has been forced local or we have found a regular
4322 definition for the symbolic link case, then we won't be needing
4324 if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
4325 && ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
4328 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
4329 s->section->_raw_size -= s->count * sizeof (Elf32_External_Rel);
4335 /* Set the sizes of the dynamic sections. */
4338 _bfd_mn10300_elf_size_dynamic_sections (output_bfd, info)
4340 struct bfd_link_info * info;
4346 bfd_boolean reltext;
4348 dynobj = elf_hash_table (info)->dynobj;
4349 BFD_ASSERT (dynobj != NULL);
4351 if (elf_hash_table (info)->dynamic_sections_created)
4353 /* Set the contents of the .interp section to the interpreter. */
4354 if (info->executable)
4356 s = bfd_get_section_by_name (dynobj, ".interp");
4357 BFD_ASSERT (s != NULL);
4358 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
4359 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4364 /* We may have created entries in the .rela.got section.
4365 However, if we are not creating the dynamic sections, we will
4366 not actually use these entries. Reset the size of .rela.got,
4367 which will cause it to get stripped from the output file
4369 s = bfd_get_section_by_name (dynobj, ".rela.got");
4374 /* If this is a -Bsymbolic shared link, then we need to discard all
4375 PC relative relocs against symbols defined in a regular object.
4376 We allocated space for them in the check_relocs routine, but we
4377 will not fill them in in the relocate_section routine. */
4378 if (info->shared && info->symbolic)
4379 elf32_mn10300_link_hash_traverse (elf32_mn10300_hash_table (info),
4380 _bfd_mn10300_elf_discard_copies,
4383 /* The check_relocs and adjust_dynamic_symbol entry points have
4384 determined the sizes of the various dynamic sections. Allocate
4389 for (s = dynobj->sections; s != NULL; s = s->next)
4394 if ((s->flags & SEC_LINKER_CREATED) == 0)
4397 /* It's OK to base decisions on the section name, because none
4398 of the dynobj section names depend upon the input files. */
4399 name = bfd_get_section_name (dynobj, s);
4403 if (strcmp (name, ".plt") == 0)
4405 if (s->_raw_size == 0)
4406 /* Strip this section if we don't need it; see the
4410 /* Remember whether there is a PLT. */
4413 else if (strncmp (name, ".rela", 5) == 0)
4415 if (s->_raw_size == 0)
4417 /* If we don't need this section, strip it from the
4418 output file. This is mostly to handle .rela.bss and
4419 .rela.plt. We must create both sections in
4420 create_dynamic_sections, because they must be created
4421 before the linker maps input sections to output
4422 sections. The linker does that before
4423 adjust_dynamic_symbol is called, and it is that
4424 function which decides whether anything needs to go
4425 into these sections. */
4432 /* Remember whether there are any reloc sections other
4434 if (strcmp (name, ".rela.plt") != 0)
4436 const char * outname;
4440 /* If this relocation section applies to a read only
4441 section, then we probably need a DT_TEXTREL
4442 entry. The entries in the .rela.plt section
4443 really apply to the .got section, which we
4444 created ourselves and so know is not readonly. */
4445 outname = bfd_get_section_name (output_bfd,
4447 target = bfd_get_section_by_name (output_bfd, outname + 5);
4449 && (target->flags & SEC_READONLY) != 0
4450 && (target->flags & SEC_ALLOC) != 0)
4454 /* We use the reloc_count field as a counter if we need
4455 to copy relocs into the output file. */
4459 else if (strncmp (name, ".got", 4) != 0)
4460 /* It's not one of our sections, so don't allocate space. */
4465 _bfd_strip_section_from_output (info, s);
4469 /* Allocate memory for the section contents. We use bfd_zalloc
4470 here in case unused entries are not reclaimed before the
4471 section's contents are written out. This should not happen,
4472 but this way if it does, we get a R_MN10300_NONE reloc
4473 instead of garbage. */
4474 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
4475 if (s->contents == NULL && s->_raw_size != 0)
4479 if (elf_hash_table (info)->dynamic_sections_created)
4481 /* Add some entries to the .dynamic section. We fill in the
4482 values later, in _bfd_mn10300_elf_finish_dynamic_sections,
4483 but we must add the entries now so that we get the correct
4484 size for the .dynamic section. The DT_DEBUG entry is filled
4485 in by the dynamic linker and used by the debugger. */
4488 if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0))
4494 if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0)
4495 || ! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0)
4496 || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
4497 || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0))
4503 if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0)
4504 || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0)
4505 || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT,
4506 sizeof (Elf32_External_Rela)))
4512 if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0))
4520 /* Finish up dynamic symbol handling. We set the contents of various
4521 dynamic sections here. */
4524 _bfd_mn10300_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
4526 struct bfd_link_info * info;
4527 struct elf_link_hash_entry * h;
4528 Elf_Internal_Sym * sym;
4532 dynobj = elf_hash_table (info)->dynobj;
4534 if (h->plt.offset != (bfd_vma) -1)
4541 Elf_Internal_Rela rel;
4543 /* This symbol has an entry in the procedure linkage table. Set
4546 BFD_ASSERT (h->dynindx != -1);
4548 splt = bfd_get_section_by_name (dynobj, ".plt");
4549 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
4550 srel = bfd_get_section_by_name (dynobj, ".rela.plt");
4551 BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
4553 /* Get the index in the procedure linkage table which
4554 corresponds to this symbol. This is the index of this symbol
4555 in all the symbols for which we are making plt entries. The
4556 first entry in the procedure linkage table is reserved. */
4557 plt_index = ((h->plt.offset - elf_mn10300_sizeof_plt0 (info))
4558 / elf_mn10300_sizeof_plt (info));
4560 /* Get the offset into the .got table of the entry that
4561 corresponds to this function. Each .got entry is 4 bytes.
4562 The first three are reserved. */
4563 got_offset = (plt_index + 3) * 4;
4565 /* Fill in the entry in the procedure linkage table. */
4568 memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry,
4569 elf_mn10300_sizeof_plt (info));
4570 bfd_put_32 (output_bfd,
4571 (sgot->output_section->vma
4572 + sgot->output_offset
4574 (splt->contents + h->plt.offset
4575 + elf_mn10300_plt_symbol_offset (info)));
4577 bfd_put_32 (output_bfd,
4578 (1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)),
4579 (splt->contents + h->plt.offset
4580 + elf_mn10300_plt_plt0_offset (info)));
4584 memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry,
4585 elf_mn10300_sizeof_plt (info));
4587 bfd_put_32 (output_bfd, got_offset,
4588 (splt->contents + h->plt.offset
4589 + elf_mn10300_plt_symbol_offset (info)));
4592 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
4593 (splt->contents + h->plt.offset
4594 + elf_mn10300_plt_reloc_offset (info)));
4596 /* Fill in the entry in the global offset table. */
4597 bfd_put_32 (output_bfd,
4598 (splt->output_section->vma
4599 + splt->output_offset
4601 + elf_mn10300_plt_temp_offset (info)),
4602 sgot->contents + got_offset);
4604 /* Fill in the entry in the .rela.plt section. */
4605 rel.r_offset = (sgot->output_section->vma
4606 + sgot->output_offset
4608 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT);
4610 bfd_elf32_swap_reloca_out (output_bfd, &rel,
4611 (bfd_byte *) ((Elf32_External_Rela *) srel->contents
4614 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4615 /* Mark the symbol as undefined, rather than as defined in
4616 the .plt section. Leave the value alone. */
4617 sym->st_shndx = SHN_UNDEF;
4620 if (h->got.offset != (bfd_vma) -1)
4624 Elf_Internal_Rela rel;
4626 /* This symbol has an entry in the global offset table. Set it up. */
4628 sgot = bfd_get_section_by_name (dynobj, ".got");
4629 srel = bfd_get_section_by_name (dynobj, ".rela.got");
4630 BFD_ASSERT (sgot != NULL && srel != NULL);
4632 rel.r_offset = (sgot->output_section->vma
4633 + sgot->output_offset
4634 + (h->got.offset &~ 1));
4636 /* If this is a -Bsymbolic link, and the symbol is defined
4637 locally, we just want to emit a RELATIVE reloc. Likewise if
4638 the symbol was forced to be local because of a version file.
4639 The entry in the global offset table will already have been
4640 initialized in the relocate_section function. */
4642 && (info->symbolic || h->dynindx == -1)
4643 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
4645 rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
4646 rel.r_addend = (h->root.u.def.value
4647 + h->root.u.def.section->output_section->vma
4648 + h->root.u.def.section->output_offset);
4652 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
4653 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT);
4657 bfd_elf32_swap_reloca_out (output_bfd, &rel,
4658 (bfd_byte *) ((Elf32_External_Rela *) srel->contents
4659 + srel->reloc_count));
4660 ++ srel->reloc_count;
4663 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
4666 Elf_Internal_Rela rel;
4668 /* This symbol needs a copy reloc. Set it up. */
4669 BFD_ASSERT (h->dynindx != -1
4670 && (h->root.type == bfd_link_hash_defined
4671 || h->root.type == bfd_link_hash_defweak));
4673 s = bfd_get_section_by_name (h->root.u.def.section->owner,
4675 BFD_ASSERT (s != NULL);
4677 rel.r_offset = (h->root.u.def.value
4678 + h->root.u.def.section->output_section->vma
4679 + h->root.u.def.section->output_offset);
4680 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY);
4682 bfd_elf32_swap_reloca_out (output_bfd, &rel,
4683 (bfd_byte *) ((Elf32_External_Rela *) s->contents
4688 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4689 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
4690 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4691 sym->st_shndx = SHN_ABS;
4696 /* Finish up the dynamic sections. */
4699 _bfd_mn10300_elf_finish_dynamic_sections (output_bfd, info)
4701 struct bfd_link_info * info;
4707 dynobj = elf_hash_table (info)->dynobj;
4709 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
4710 BFD_ASSERT (sgot != NULL);
4711 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4713 if (elf_hash_table (info)->dynamic_sections_created)
4716 Elf32_External_Dyn * dyncon;
4717 Elf32_External_Dyn * dynconend;
4719 BFD_ASSERT (sdyn != NULL);
4721 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4722 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
4724 for (; dyncon < dynconend; dyncon++)
4726 Elf_Internal_Dyn dyn;
4730 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4744 s = bfd_get_section_by_name (output_bfd, name);
4745 BFD_ASSERT (s != NULL);
4746 dyn.d_un.d_ptr = s->vma;
4747 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4751 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
4752 BFD_ASSERT (s != NULL);
4753 if (s->_cooked_size != 0)
4754 dyn.d_un.d_val = s->_cooked_size;
4756 dyn.d_un.d_val = s->_raw_size;
4757 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4761 /* My reading of the SVR4 ABI indicates that the
4762 procedure linkage table relocs (DT_JMPREL) should be
4763 included in the overall relocs (DT_RELA). This is
4764 what Solaris does. However, UnixWare can not handle
4765 that case. Therefore, we override the DT_RELASZ entry
4766 here to make it not include the JMPREL relocs. Since
4767 the linker script arranges for .rela.plt to follow all
4768 other relocation sections, we don't have to worry
4769 about changing the DT_RELA entry. */
4770 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
4773 if (s->_cooked_size != 0)
4774 dyn.d_un.d_val -= s->_cooked_size;
4776 dyn.d_un.d_val -= s->_raw_size;
4778 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4783 /* Fill in the first entry in the procedure linkage table. */
4784 splt = bfd_get_section_by_name (dynobj, ".plt");
4785 if (splt && splt->_raw_size > 0)
4789 memcpy (splt->contents, elf_mn10300_pic_plt_entry,
4790 elf_mn10300_sizeof_plt (info));
4794 memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE);
4795 bfd_put_32 (output_bfd,
4796 sgot->output_section->vma + sgot->output_offset + 4,
4797 splt->contents + elf_mn10300_plt0_gotid_offset (info));
4798 bfd_put_32 (output_bfd,
4799 sgot->output_section->vma + sgot->output_offset + 8,
4800 splt->contents + elf_mn10300_plt0_linker_offset (info));
4803 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4804 really seem like the right value. */
4805 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
4809 /* Fill in the first three entries in the global offset table. */
4810 if (sgot->_raw_size > 0)
4813 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
4815 bfd_put_32 (output_bfd,
4816 sdyn->output_section->vma + sdyn->output_offset,
4818 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
4819 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
4822 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
4828 #define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec
4829 #define TARGET_LITTLE_NAME "elf32-mn10300"
4830 #define ELF_ARCH bfd_arch_mn10300
4831 #define ELF_MACHINE_CODE EM_MN10300
4832 #define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300
4833 #define ELF_MAXPAGESIZE 0x1000
4836 #define elf_info_to_howto mn10300_info_to_howto
4837 #define elf_info_to_howto_rel 0
4838 #define elf_backend_can_gc_sections 1
4839 #define elf_backend_rela_normal 1
4840 #define elf_backend_check_relocs mn10300_elf_check_relocs
4841 #define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook
4842 #define elf_backend_relocate_section mn10300_elf_relocate_section
4843 #define bfd_elf32_bfd_relax_section mn10300_elf_relax_section
4844 #define bfd_elf32_bfd_get_relocated_section_contents \
4845 mn10300_elf_get_relocated_section_contents
4846 #define bfd_elf32_bfd_link_hash_table_create \
4847 elf32_mn10300_link_hash_table_create
4848 #define bfd_elf32_bfd_link_hash_table_free \
4849 elf32_mn10300_link_hash_table_free
4851 #ifndef elf_symbol_leading_char
4852 #define elf_symbol_leading_char '_'
4855 /* So we can set bits in e_flags. */
4856 #define elf_backend_final_write_processing \
4857 _bfd_mn10300_elf_final_write_processing
4858 #define elf_backend_object_p _bfd_mn10300_elf_object_p
4860 #define bfd_elf32_bfd_merge_private_bfd_data \
4861 _bfd_mn10300_elf_merge_private_bfd_data
4863 #define elf_backend_can_gc_sections 1
4864 #define elf_backend_create_dynamic_sections \
4865 _bfd_mn10300_elf_create_dynamic_sections
4866 #define elf_backend_adjust_dynamic_symbol \
4867 _bfd_mn10300_elf_adjust_dynamic_symbol
4868 #define elf_backend_size_dynamic_sections \
4869 _bfd_mn10300_elf_size_dynamic_sections
4870 #define elf_backend_finish_dynamic_symbol \
4871 _bfd_mn10300_elf_finish_dynamic_symbol
4872 #define elf_backend_finish_dynamic_sections \
4873 _bfd_mn10300_elf_finish_dynamic_sections
4875 #define elf_backend_want_got_plt 1
4876 #define elf_backend_plt_readonly 1
4877 #define elf_backend_want_plt_sym 0
4878 #define elf_backend_got_header_size 12
4880 #include "elf32-target.h"