1 /* Matsushita 10300 specific support for 32-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
3 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
25 #include "elf/mn10300.h"
27 static bfd_reloc_status_type mn10300_elf_final_link_relocate
28 PARAMS ((reloc_howto_type *, bfd *, bfd *, asection *, bfd_byte *,
29 bfd_vma, bfd_vma, bfd_vma,
30 struct elf_link_hash_entry *, unsigned long, struct bfd_link_info *,
32 static bfd_boolean mn10300_elf_relocate_section
33 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
34 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
35 static bfd_boolean mn10300_elf_relax_section
36 PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *));
37 static bfd_byte * mn10300_elf_get_relocated_section_contents
38 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
39 bfd_byte *, bfd_boolean, asymbol **));
40 static unsigned long elf_mn10300_mach
42 void _bfd_mn10300_elf_final_write_processing
43 PARAMS ((bfd *, bfd_boolean));
44 bfd_boolean _bfd_mn10300_elf_object_p
46 bfd_boolean _bfd_mn10300_elf_merge_private_bfd_data
47 PARAMS ((bfd *,bfd *));
49 /* The mn10300 linker needs to keep track of the number of relocs that
50 it decides to copy in check_relocs for each symbol. This is so
51 that it can discard PC relative relocs if it doesn't need them when
52 linking with -Bsymbolic. We store the information in a field
53 extending the regular ELF linker hash table. */
55 /* This structure keeps track of the number of PC relative relocs we
56 have copied for a given symbol. */
58 struct elf_mn10300_pcrel_relocs_copied
61 struct elf_mn10300_pcrel_relocs_copied * next;
62 /* A section in dynobj. */
64 /* Number of relocs copied in this section. */
68 struct elf32_mn10300_link_hash_entry {
69 /* The basic elf link hash table entry. */
70 struct elf_link_hash_entry root;
72 /* For function symbols, the number of times this function is
73 called directly (ie by name). */
74 unsigned int direct_calls;
76 /* For function symbols, the size of this function's stack
77 (if <= 255 bytes). We stuff this into "call" instructions
78 to this target when it's valid and profitable to do so.
80 This does not include stack allocated by movm! */
81 unsigned char stack_size;
83 /* For function symbols, arguments (if any) for movm instruction
84 in the prologue. We stuff this value into "call" instructions
85 to the target when it's valid and profitable to do so. */
86 unsigned char movm_args;
88 /* For function symbols, the amount of stack space that would be allocated
89 by the movm instruction. This is redundant with movm_args, but we
90 add it to the hash table to avoid computing it over and over. */
91 unsigned char movm_stack_size;
93 /* Number of PC relative relocs copied for this symbol. */
94 struct elf_mn10300_pcrel_relocs_copied * pcrel_relocs_copied;
96 /* When set, convert all "call" instructions to this target into "calls"
98 #define MN10300_CONVERT_CALL_TO_CALLS 0x1
100 /* Used to mark functions which have had redundant parts of their
102 #define MN10300_DELETED_PROLOGUE_BYTES 0x2
106 /* We derive a hash table from the main elf linker hash table so
107 we can store state variables and a secondary hash table without
108 resorting to global variables. */
109 struct elf32_mn10300_link_hash_table {
110 /* The main hash table. */
111 struct elf_link_hash_table root;
113 /* A hash table for static functions. We could derive a new hash table
114 instead of using the full elf32_mn10300_link_hash_table if we wanted
115 to save some memory. */
116 struct elf32_mn10300_link_hash_table *static_hash_table;
118 /* Random linker state flags. */
119 #define MN10300_HASH_ENTRIES_INITIALIZED 0x1
123 /* For MN10300 linker hash table. */
125 /* Get the MN10300 ELF linker hash table from a link_info structure. */
127 #define elf32_mn10300_hash_table(p) \
128 ((struct elf32_mn10300_link_hash_table *) ((p)->hash))
130 #define elf32_mn10300_link_hash_traverse(table, func, info) \
131 (elf_link_hash_traverse \
133 (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
136 static struct bfd_hash_entry *elf32_mn10300_link_hash_newfunc
137 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
138 static struct bfd_link_hash_table *elf32_mn10300_link_hash_table_create
140 static void elf32_mn10300_link_hash_table_free
141 PARAMS ((struct bfd_link_hash_table *));
143 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
144 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
145 static void mn10300_info_to_howto
146 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
147 static bfd_boolean mn10300_elf_check_relocs
148 PARAMS ((bfd *, struct bfd_link_info *, asection *,
149 const Elf_Internal_Rela *));
150 static asection *mn10300_elf_gc_mark_hook
151 PARAMS ((asection *, struct bfd_link_info *info, Elf_Internal_Rela *,
152 struct elf_link_hash_entry *, Elf_Internal_Sym *));
153 static bfd_boolean mn10300_elf_relax_delete_bytes
154 PARAMS ((bfd *, asection *, bfd_vma, int));
155 static bfd_boolean mn10300_elf_symbol_address_p
156 PARAMS ((bfd *, asection *, Elf_Internal_Sym *, bfd_vma));
157 static bfd_boolean elf32_mn10300_finish_hash_table_entry
158 PARAMS ((struct bfd_hash_entry *, PTR));
159 static void compute_function_info
160 PARAMS ((bfd *, struct elf32_mn10300_link_hash_entry *,
161 bfd_vma, unsigned char *));
163 static bfd_boolean _bfd_mn10300_elf_create_got_section
164 PARAMS ((bfd *, struct bfd_link_info *));
165 static bfd_boolean _bfd_mn10300_elf_create_dynamic_sections
166 PARAMS ((bfd *, struct bfd_link_info *));
167 static bfd_boolean _bfd_mn10300_elf_adjust_dynamic_symbol
168 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
169 static bfd_boolean _bfd_mn10300_elf_discard_copies
170 PARAMS ((struct elf32_mn10300_link_hash_entry *,
171 struct bfd_link_info *));
172 static bfd_boolean _bfd_mn10300_elf_size_dynamic_sections
173 PARAMS ((bfd *, struct bfd_link_info *));
174 static bfd_boolean _bfd_mn10300_elf_finish_dynamic_symbol
175 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
176 Elf_Internal_Sym *));
177 static bfd_boolean _bfd_mn10300_elf_finish_dynamic_sections
178 PARAMS ((bfd *, struct bfd_link_info *));
180 static reloc_howto_type elf_mn10300_howto_table[] = {
181 /* Dummy relocation. Does nothing. */
182 HOWTO (R_MN10300_NONE,
188 complain_overflow_bitfield,
189 bfd_elf_generic_reloc,
195 /* Standard 32 bit reloc. */
202 complain_overflow_bitfield,
203 bfd_elf_generic_reloc,
209 /* Standard 16 bit reloc. */
216 complain_overflow_bitfield,
217 bfd_elf_generic_reloc,
223 /* Standard 8 bit reloc. */
230 complain_overflow_bitfield,
231 bfd_elf_generic_reloc,
237 /* Standard 32bit pc-relative reloc. */
238 HOWTO (R_MN10300_PCREL32,
244 complain_overflow_bitfield,
245 bfd_elf_generic_reloc,
251 /* Standard 16bit pc-relative reloc. */
252 HOWTO (R_MN10300_PCREL16,
258 complain_overflow_bitfield,
259 bfd_elf_generic_reloc,
265 /* Standard 8 pc-relative reloc. */
266 HOWTO (R_MN10300_PCREL8,
272 complain_overflow_bitfield,
273 bfd_elf_generic_reloc,
280 /* GNU extension to record C++ vtable hierarchy */
281 HOWTO (R_MN10300_GNU_VTINHERIT, /* type */
283 0, /* size (0 = byte, 1 = short, 2 = long) */
285 FALSE, /* pc_relative */
287 complain_overflow_dont, /* complain_on_overflow */
288 NULL, /* special_function */
289 "R_MN10300_GNU_VTINHERIT", /* name */
290 FALSE, /* partial_inplace */
293 FALSE), /* pcrel_offset */
295 /* GNU extension to record C++ vtable member usage */
296 HOWTO (R_MN10300_GNU_VTENTRY, /* type */
298 0, /* size (0 = byte, 1 = short, 2 = long) */
300 FALSE, /* pc_relative */
302 complain_overflow_dont, /* complain_on_overflow */
303 NULL, /* special_function */
304 "R_MN10300_GNU_VTENTRY", /* name */
305 FALSE, /* partial_inplace */
308 FALSE), /* pcrel_offset */
310 /* Standard 24 bit reloc. */
317 complain_overflow_bitfield,
318 bfd_elf_generic_reloc,
324 HOWTO (R_MN10300_GOTPC32, /* type */
326 2, /* size (0 = byte, 1 = short, 2 = long) */
328 TRUE, /* pc_relative */
330 complain_overflow_bitfield, /* complain_on_overflow */
331 bfd_elf_generic_reloc, /* */
332 "R_MN10300_GOTPC32", /* name */
333 FALSE, /* partial_inplace */
334 0xffffffff, /* src_mask */
335 0xffffffff, /* dst_mask */
336 TRUE), /* pcrel_offset */
338 HOWTO (R_MN10300_GOTPC16, /* type */
340 1, /* size (0 = byte, 1 = short, 2 = long) */
342 TRUE, /* pc_relative */
344 complain_overflow_bitfield, /* complain_on_overflow */
345 bfd_elf_generic_reloc, /* */
346 "R_MN10300_GOTPC16", /* name */
347 FALSE, /* partial_inplace */
348 0xffff, /* src_mask */
349 0xffff, /* dst_mask */
350 TRUE), /* pcrel_offset */
352 HOWTO (R_MN10300_GOTOFF32, /* type */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
356 FALSE, /* pc_relative */
358 complain_overflow_bitfield, /* complain_on_overflow */
359 bfd_elf_generic_reloc, /* */
360 "R_MN10300_GOTOFF32", /* name */
361 FALSE, /* partial_inplace */
362 0xffffffff, /* src_mask */
363 0xffffffff, /* dst_mask */
364 FALSE), /* pcrel_offset */
366 HOWTO (R_MN10300_GOTOFF24, /* type */
368 2, /* size (0 = byte, 1 = short, 2 = long) */
370 FALSE, /* pc_relative */
372 complain_overflow_bitfield, /* complain_on_overflow */
373 bfd_elf_generic_reloc, /* */
374 "R_MN10300_GOTOFF24", /* name */
375 FALSE, /* partial_inplace */
376 0xffffff, /* src_mask */
377 0xffffff, /* dst_mask */
378 FALSE), /* pcrel_offset */
380 HOWTO (R_MN10300_GOTOFF16, /* type */
382 1, /* size (0 = byte, 1 = short, 2 = long) */
384 FALSE, /* pc_relative */
386 complain_overflow_bitfield, /* complain_on_overflow */
387 bfd_elf_generic_reloc, /* */
388 "R_MN10300_GOTOFF16", /* name */
389 FALSE, /* partial_inplace */
390 0xffff, /* src_mask */
391 0xffff, /* dst_mask */
392 FALSE), /* pcrel_offset */
394 HOWTO (R_MN10300_PLT32, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 TRUE, /* pc_relative */
400 complain_overflow_bitfield, /* complain_on_overflow */
401 bfd_elf_generic_reloc, /* */
402 "R_MN10300_PLT32", /* name */
403 FALSE, /* partial_inplace */
404 0xffffffff, /* src_mask */
405 0xffffffff, /* dst_mask */
406 TRUE), /* pcrel_offset */
408 HOWTO (R_MN10300_PLT16, /* type */
410 1, /* size (0 = byte, 1 = short, 2 = long) */
412 TRUE, /* pc_relative */
414 complain_overflow_bitfield, /* complain_on_overflow */
415 bfd_elf_generic_reloc, /* */
416 "R_MN10300_PLT16", /* name */
417 FALSE, /* partial_inplace */
418 0xffff, /* src_mask */
419 0xffff, /* dst_mask */
420 TRUE), /* pcrel_offset */
422 HOWTO (R_MN10300_GOT32, /* type */
424 2, /* size (0 = byte, 1 = short, 2 = long) */
426 FALSE, /* pc_relative */
428 complain_overflow_bitfield, /* complain_on_overflow */
429 bfd_elf_generic_reloc, /* */
430 "R_MN10300_GOT32", /* name */
431 FALSE, /* partial_inplace */
432 0xffffffff, /* src_mask */
433 0xffffffff, /* dst_mask */
434 FALSE), /* pcrel_offset */
436 HOWTO (R_MN10300_GOT24, /* type */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
440 FALSE, /* pc_relative */
442 complain_overflow_bitfield, /* complain_on_overflow */
443 bfd_elf_generic_reloc, /* */
444 "R_MN10300_GOT24", /* name */
445 FALSE, /* partial_inplace */
446 0xffffffff, /* src_mask */
447 0xffffffff, /* dst_mask */
448 FALSE), /* pcrel_offset */
450 HOWTO (R_MN10300_GOT16, /* type */
452 1, /* size (0 = byte, 1 = short, 2 = long) */
454 FALSE, /* pc_relative */
456 complain_overflow_bitfield, /* complain_on_overflow */
457 bfd_elf_generic_reloc, /* */
458 "R_MN10300_GOT16", /* name */
459 FALSE, /* partial_inplace */
460 0xffffffff, /* src_mask */
461 0xffffffff, /* dst_mask */
462 FALSE), /* pcrel_offset */
464 HOWTO (R_MN10300_COPY, /* type */
466 2, /* size (0 = byte, 1 = short, 2 = long) */
468 FALSE, /* pc_relative */
470 complain_overflow_bitfield, /* complain_on_overflow */
471 bfd_elf_generic_reloc, /* */
472 "R_MN10300_COPY", /* name */
473 FALSE, /* partial_inplace */
474 0xffffffff, /* src_mask */
475 0xffffffff, /* dst_mask */
476 FALSE), /* pcrel_offset */
478 HOWTO (R_MN10300_GLOB_DAT, /* type */
480 2, /* size (0 = byte, 1 = short, 2 = long) */
482 FALSE, /* pc_relative */
484 complain_overflow_bitfield, /* complain_on_overflow */
485 bfd_elf_generic_reloc, /* */
486 "R_MN10300_GLOB_DAT", /* name */
487 FALSE, /* partial_inplace */
488 0xffffffff, /* src_mask */
489 0xffffffff, /* dst_mask */
490 FALSE), /* pcrel_offset */
492 HOWTO (R_MN10300_JMP_SLOT, /* type */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
496 FALSE, /* pc_relative */
498 complain_overflow_bitfield, /* complain_on_overflow */
499 bfd_elf_generic_reloc, /* */
500 "R_MN10300_JMP_SLOT", /* name */
501 FALSE, /* partial_inplace */
502 0xffffffff, /* src_mask */
503 0xffffffff, /* dst_mask */
504 FALSE), /* pcrel_offset */
506 HOWTO (R_MN10300_RELATIVE, /* type */
508 2, /* size (0 = byte, 1 = short, 2 = long) */
510 FALSE, /* pc_relative */
512 complain_overflow_bitfield, /* complain_on_overflow */
513 bfd_elf_generic_reloc, /* */
514 "R_MN10300_RELATIVE", /* name */
515 FALSE, /* partial_inplace */
516 0xffffffff, /* src_mask */
517 0xffffffff, /* dst_mask */
518 FALSE), /* pcrel_offset */
522 struct mn10300_reloc_map {
523 bfd_reloc_code_real_type bfd_reloc_val;
524 unsigned char elf_reloc_val;
527 static const struct mn10300_reloc_map mn10300_reloc_map[] = {
528 { BFD_RELOC_NONE, R_MN10300_NONE, },
529 { BFD_RELOC_32, R_MN10300_32, },
530 { BFD_RELOC_16, R_MN10300_16, },
531 { BFD_RELOC_8, R_MN10300_8, },
532 { BFD_RELOC_32_PCREL, R_MN10300_PCREL32, },
533 { BFD_RELOC_16_PCREL, R_MN10300_PCREL16, },
534 { BFD_RELOC_8_PCREL, R_MN10300_PCREL8, },
535 { BFD_RELOC_24, R_MN10300_24, },
536 { BFD_RELOC_VTABLE_INHERIT, R_MN10300_GNU_VTINHERIT },
537 { BFD_RELOC_VTABLE_ENTRY, R_MN10300_GNU_VTENTRY },
538 { BFD_RELOC_32_GOT_PCREL, R_MN10300_GOTPC32 },
539 { BFD_RELOC_16_GOT_PCREL, R_MN10300_GOTPC16 },
540 { BFD_RELOC_32_GOTOFF, R_MN10300_GOTOFF32 },
541 { BFD_RELOC_MN10300_GOTOFF24, R_MN10300_GOTOFF24 },
542 { BFD_RELOC_16_GOTOFF, R_MN10300_GOTOFF16 },
543 { BFD_RELOC_32_PLT_PCREL, R_MN10300_PLT32 },
544 { BFD_RELOC_16_PLT_PCREL, R_MN10300_PLT16 },
545 { BFD_RELOC_MN10300_GOT32, R_MN10300_GOT32 },
546 { BFD_RELOC_MN10300_GOT24, R_MN10300_GOT24 },
547 { BFD_RELOC_MN10300_GOT16, R_MN10300_GOT16 },
548 { BFD_RELOC_MN10300_COPY, R_MN10300_COPY },
549 { BFD_RELOC_MN10300_GLOB_DAT, R_MN10300_GLOB_DAT },
550 { BFD_RELOC_MN10300_JMP_SLOT, R_MN10300_JMP_SLOT },
551 { BFD_RELOC_MN10300_RELATIVE, R_MN10300_RELATIVE },
554 /* Create the GOT section. */
557 _bfd_mn10300_elf_create_got_section (abfd, info)
559 struct bfd_link_info * info;
564 struct bfd_link_hash_entry * bh;
565 struct elf_link_hash_entry * h;
566 const struct elf_backend_data * bed = get_elf_backend_data (abfd);
569 /* This function may be called more than once. */
570 if (bfd_get_section_by_name (abfd, ".got") != NULL)
573 switch (bed->s->arch_size)
584 bfd_set_error (bfd_error_bad_value);
588 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
589 | SEC_LINKER_CREATED);
592 pltflags |= SEC_CODE;
593 if (bed->plt_not_loaded)
594 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
595 if (bed->plt_readonly)
596 pltflags |= SEC_READONLY;
598 s = bfd_make_section (abfd, ".plt");
600 || ! bfd_set_section_flags (abfd, s, pltflags)
601 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
604 if (bed->want_plt_sym)
606 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
609 if (! (_bfd_generic_link_add_one_symbol
610 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
611 (bfd_vma) 0, (const char *) NULL, FALSE,
612 get_elf_backend_data (abfd)->collect, &bh)))
614 h = (struct elf_link_hash_entry *) bh;
615 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
616 h->type = STT_OBJECT;
619 && ! bfd_elf_link_record_dynamic_symbol (info, h))
623 s = bfd_make_section (abfd, ".got");
625 || ! bfd_set_section_flags (abfd, s, flags)
626 || ! bfd_set_section_alignment (abfd, s, ptralign))
629 if (bed->want_got_plt)
631 s = bfd_make_section (abfd, ".got.plt");
633 || ! bfd_set_section_flags (abfd, s, flags)
634 || ! bfd_set_section_alignment (abfd, s, ptralign))
638 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
639 (or .got.plt) section. We don't do this in the linker script
640 because we don't want to define the symbol if we are not creating
641 a global offset table. */
643 if (!(_bfd_generic_link_add_one_symbol
644 (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s,
645 bed->got_symbol_offset, (const char *) NULL, FALSE,
648 h = (struct elf_link_hash_entry *) bh;
649 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
650 h->type = STT_OBJECT;
653 && ! bfd_elf_link_record_dynamic_symbol (info, h))
656 elf_hash_table (info)->hgot = h;
658 /* The first bit of the global offset table is the header. */
659 s->size += bed->got_header_size + bed->got_symbol_offset;
664 static reloc_howto_type *
665 bfd_elf32_bfd_reloc_type_lookup (abfd, code)
666 bfd *abfd ATTRIBUTE_UNUSED;
667 bfd_reloc_code_real_type code;
672 i < sizeof (mn10300_reloc_map) / sizeof (struct mn10300_reloc_map);
675 if (mn10300_reloc_map[i].bfd_reloc_val == code)
676 return &elf_mn10300_howto_table[mn10300_reloc_map[i].elf_reloc_val];
682 /* Set the howto pointer for an MN10300 ELF reloc. */
685 mn10300_info_to_howto (abfd, cache_ptr, dst)
686 bfd *abfd ATTRIBUTE_UNUSED;
688 Elf_Internal_Rela *dst;
692 r_type = ELF32_R_TYPE (dst->r_info);
693 BFD_ASSERT (r_type < (unsigned int) R_MN10300_MAX);
694 cache_ptr->howto = &elf_mn10300_howto_table[r_type];
697 /* Look through the relocs for a section during the first phase.
698 Since we don't do .gots or .plts, we just need to consider the
699 virtual table relocs for gc. */
702 mn10300_elf_check_relocs (abfd, info, sec, relocs)
704 struct bfd_link_info *info;
706 const Elf_Internal_Rela *relocs;
708 Elf_Internal_Shdr *symtab_hdr;
709 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
710 const Elf_Internal_Rela *rel;
711 const Elf_Internal_Rela *rel_end;
713 bfd_vma * local_got_offsets;
722 if (info->relocatable)
725 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
726 sym_hashes = elf_sym_hashes (abfd);
727 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
728 if (!elf_bad_symtab (abfd))
729 sym_hashes_end -= symtab_hdr->sh_info;
731 dynobj = elf_hash_table (info)->dynobj;
732 local_got_offsets = elf_local_got_offsets (abfd);
733 rel_end = relocs + sec->reloc_count;
734 for (rel = relocs; rel < rel_end; rel++)
736 struct elf_link_hash_entry *h;
737 unsigned long r_symndx;
739 r_symndx = ELF32_R_SYM (rel->r_info);
740 if (r_symndx < symtab_hdr->sh_info)
743 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
745 /* Some relocs require a global offset table. */
748 switch (ELF32_R_TYPE (rel->r_info))
750 case R_MN10300_GOT32:
751 case R_MN10300_GOT24:
752 case R_MN10300_GOT16:
753 case R_MN10300_GOTOFF32:
754 case R_MN10300_GOTOFF24:
755 case R_MN10300_GOTOFF16:
756 case R_MN10300_GOTPC32:
757 case R_MN10300_GOTPC16:
758 elf_hash_table (info)->dynobj = dynobj = abfd;
759 if (! _bfd_mn10300_elf_create_got_section (dynobj, info))
768 switch (ELF32_R_TYPE (rel->r_info))
770 /* This relocation describes the C++ object vtable hierarchy.
771 Reconstruct it for later use during GC. */
772 case R_MN10300_GNU_VTINHERIT:
773 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
777 /* This relocation describes which C++ vtable entries are actually
778 used. Record for later use during GC. */
779 case R_MN10300_GNU_VTENTRY:
780 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
783 case R_MN10300_GOT32:
784 case R_MN10300_GOT24:
785 case R_MN10300_GOT16:
786 /* This symbol requires a global offset table entry. */
790 sgot = bfd_get_section_by_name (dynobj, ".got");
791 BFD_ASSERT (sgot != NULL);
795 && (h != NULL || info->shared))
797 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
800 srelgot = bfd_make_section (dynobj, ".rela.got");
802 || ! bfd_set_section_flags (dynobj, srelgot,
809 || ! bfd_set_section_alignment (dynobj, srelgot, 2))
816 if (h->got.offset != (bfd_vma) -1)
817 /* We have already allocated space in the .got. */
820 h->got.offset = sgot->size;
822 /* Make sure this symbol is output as a dynamic symbol. */
823 if (h->dynindx == -1)
825 if (! bfd_elf_link_record_dynamic_symbol (info, h))
829 srelgot->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->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->size += sizeof (Elf32_External_Rela);
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->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;
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 outrel.r_offset = _bfd_elf_section_offset (input_bfd, info,
1116 input_section, offset);
1117 if (outrel.r_offset == (bfd_vma) -1)
1120 outrel.r_offset += (input_section->output_section->vma
1121 + input_section->output_offset);
1125 memset (&outrel, 0, sizeof outrel);
1130 /* h->dynindx may be -1 if this symbol was marked to
1133 || ((info->symbolic || h->dynindx == -1)
1134 && (h->elf_link_hash_flags
1135 & ELF_LINK_HASH_DEF_REGULAR) != 0))
1138 outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
1139 outrel.r_addend = value + addend;
1143 BFD_ASSERT (h->dynindx != -1);
1145 outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_32);
1146 outrel.r_addend = value + addend;
1150 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
1151 (bfd_byte *) (((Elf32_External_Rela *) sreloc->contents)
1152 + sreloc->reloc_count));
1153 ++sreloc->reloc_count;
1155 /* If this reloc is against an external symbol, we do
1156 not want to fiddle with the addend. Otherwise, we
1157 need to include the symbol value so that it becomes
1158 an addend for the dynamic reloc. */
1160 return bfd_reloc_ok;
1163 bfd_put_32 (input_bfd, value, hit_data);
1164 return bfd_reloc_ok;
1169 if ((long) value > 0x7fffff || (long) value < -0x800000)
1170 return bfd_reloc_overflow;
1172 bfd_put_8 (input_bfd, value & 0xff, hit_data);
1173 bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
1174 bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
1175 return bfd_reloc_ok;
1180 if ((long) value > 0x7fff || (long) value < -0x8000)
1181 return bfd_reloc_overflow;
1183 bfd_put_16 (input_bfd, value, hit_data);
1184 return bfd_reloc_ok;
1189 if ((long) value > 0x7f || (long) value < -0x80)
1190 return bfd_reloc_overflow;
1192 bfd_put_8 (input_bfd, value, hit_data);
1193 return bfd_reloc_ok;
1195 case R_MN10300_PCREL8:
1196 value -= (input_section->output_section->vma
1197 + input_section->output_offset);
1201 if ((long) value > 0xff || (long) value < -0x100)
1202 return bfd_reloc_overflow;
1204 bfd_put_8 (input_bfd, value, hit_data);
1205 return bfd_reloc_ok;
1207 case R_MN10300_PCREL16:
1208 value -= (input_section->output_section->vma
1209 + input_section->output_offset);
1213 if ((long) value > 0xffff || (long) value < -0x10000)
1214 return bfd_reloc_overflow;
1216 bfd_put_16 (input_bfd, value, hit_data);
1217 return bfd_reloc_ok;
1219 case R_MN10300_PCREL32:
1221 && (input_section->flags & SEC_ALLOC) != 0
1224 && (! info->symbolic
1225 || (h->elf_link_hash_flags
1226 & ELF_LINK_HASH_DEF_REGULAR) == 0))
1228 Elf_Internal_Rela outrel;
1231 /* When generating a shared object, these relocations
1232 are copied into the output file to be resolved at run
1239 name = (bfd_elf_string_from_elf_section
1241 elf_elfheader (input_bfd)->e_shstrndx,
1242 elf_section_data (input_section)->rel_hdr.sh_name));
1246 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
1247 && strcmp (bfd_get_section_name (input_bfd,
1251 sreloc = bfd_get_section_by_name (dynobj, name);
1252 BFD_ASSERT (sreloc != NULL);
1256 outrel.r_offset = _bfd_elf_section_offset (input_bfd, info,
1257 input_section, offset);
1258 if (outrel.r_offset == (bfd_vma) -1)
1261 outrel.r_offset += (input_section->output_section->vma
1262 + input_section->output_offset);
1265 memset (&outrel, 0, sizeof outrel);
1268 BFD_ASSERT (h != NULL && h->dynindx != -1);
1269 outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_PCREL32);
1270 outrel.r_addend = addend;
1273 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
1274 (bfd_byte *) (((Elf32_External_Rela *)
1276 + sreloc->reloc_count));
1277 ++sreloc->reloc_count;
1279 return bfd_reloc_ok;
1282 value -= (input_section->output_section->vma
1283 + input_section->output_offset);
1287 bfd_put_32 (input_bfd, value, hit_data);
1288 return bfd_reloc_ok;
1290 case R_MN10300_GNU_VTINHERIT:
1291 case R_MN10300_GNU_VTENTRY:
1292 return bfd_reloc_ok;
1294 case R_MN10300_GOTPC32:
1295 /* Use global offset table as symbol value. */
1297 value = bfd_get_section_by_name (dynobj,
1298 ".got")->output_section->vma;
1299 value -= (input_section->output_section->vma
1300 + input_section->output_offset);
1304 bfd_put_32 (input_bfd, value, hit_data);
1305 return bfd_reloc_ok;
1307 case R_MN10300_GOTPC16:
1308 /* Use global offset table as symbol value. */
1310 value = bfd_get_section_by_name (dynobj,
1311 ".got")->output_section->vma;
1312 value -= (input_section->output_section->vma
1313 + input_section->output_offset);
1317 if ((long) value > 0xffff || (long) value < -0x10000)
1318 return bfd_reloc_overflow;
1320 bfd_put_16 (input_bfd, value, hit_data);
1321 return bfd_reloc_ok;
1323 case R_MN10300_GOTOFF32:
1324 value -= bfd_get_section_by_name (dynobj,
1325 ".got")->output_section->vma;
1328 bfd_put_32 (input_bfd, value, hit_data);
1329 return bfd_reloc_ok;
1331 case R_MN10300_GOTOFF24:
1332 value -= bfd_get_section_by_name (dynobj,
1333 ".got")->output_section->vma;
1336 if ((long) value > 0x7fffff || (long) value < -0x800000)
1337 return bfd_reloc_overflow;
1339 bfd_put_8 (input_bfd, value, hit_data);
1340 bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
1341 bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
1342 return bfd_reloc_ok;
1344 case R_MN10300_GOTOFF16:
1345 value -= bfd_get_section_by_name (dynobj,
1346 ".got")->output_section->vma;
1349 if ((long) value > 0xffff || (long) value < -0x10000)
1350 return bfd_reloc_overflow;
1352 bfd_put_16 (input_bfd, value, hit_data);
1353 return bfd_reloc_ok;
1355 case R_MN10300_PLT32:
1357 && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
1358 && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
1359 && h->plt.offset != (bfd_vma) -1)
1363 splt = bfd_get_section_by_name (dynobj, ".plt");
1365 value = (splt->output_section->vma
1366 + splt->output_offset
1367 + h->plt.offset) - value;
1370 value -= (input_section->output_section->vma
1371 + input_section->output_offset);
1375 bfd_put_32 (input_bfd, value, hit_data);
1376 return bfd_reloc_ok;
1378 case R_MN10300_PLT16:
1380 && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
1381 && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
1382 && h->plt.offset != (bfd_vma) -1)
1386 splt = bfd_get_section_by_name (dynobj, ".plt");
1388 value = (splt->output_section->vma
1389 + splt->output_offset
1390 + h->plt.offset) - value;
1393 value -= (input_section->output_section->vma
1394 + input_section->output_offset);
1398 if ((long) value > 0xffff || (long) value < -0x10000)
1399 return bfd_reloc_overflow;
1401 bfd_put_16 (input_bfd, value, hit_data);
1402 return bfd_reloc_ok;
1404 case R_MN10300_GOT32:
1405 case R_MN10300_GOT24:
1406 case R_MN10300_GOT16:
1410 sgot = bfd_get_section_by_name (dynobj, ".got");
1416 off = h->got.offset;
1417 BFD_ASSERT (off != (bfd_vma) -1);
1419 if (! elf_hash_table (info)->dynamic_sections_created
1421 && (info->symbolic || h->dynindx == -1)
1422 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
1423 /* This is actually a static link, or it is a
1424 -Bsymbolic link and the symbol is defined
1425 locally, or the symbol was forced to be local
1426 because of a version file. We must initialize
1427 this entry in the global offset table.
1429 When doing a dynamic link, we create a .rela.got
1430 relocation entry to initialize the value. This
1431 is done in the finish_dynamic_symbol routine. */
1432 bfd_put_32 (output_bfd, value,
1433 sgot->contents + off);
1435 value = sgot->output_offset + off;
1441 off = elf_local_got_offsets (input_bfd)[symndx];
1443 bfd_put_32 (output_bfd, value, sgot->contents + off);
1448 Elf_Internal_Rela outrel;
1450 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1451 BFD_ASSERT (srelgot != NULL);
1453 outrel.r_offset = (sgot->output_section->vma
1454 + sgot->output_offset
1456 outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
1457 outrel.r_addend = value;
1458 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
1459 (bfd_byte *) (((Elf32_External_Rela *)
1461 + srelgot->reloc_count));
1462 ++ srelgot->reloc_count;
1465 value = sgot->output_offset + off;
1471 if (r_type == R_MN10300_GOT32)
1473 bfd_put_32 (input_bfd, value, hit_data);
1474 return bfd_reloc_ok;
1476 else if (r_type == R_MN10300_GOT24)
1478 if ((long) value > 0x7fffff || (long) value < -0x800000)
1479 return bfd_reloc_overflow;
1481 bfd_put_8 (input_bfd, value & 0xff, hit_data);
1482 bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
1483 bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
1484 return bfd_reloc_ok;
1486 else if (r_type == R_MN10300_GOT16)
1488 if ((long) value > 0xffff || (long) value < -0x10000)
1489 return bfd_reloc_overflow;
1491 bfd_put_16 (input_bfd, value, hit_data);
1492 return bfd_reloc_ok;
1497 return bfd_reloc_notsupported;
1501 /* Relocate an MN10300 ELF section. */
1503 mn10300_elf_relocate_section (output_bfd, info, input_bfd, input_section,
1504 contents, relocs, local_syms, local_sections)
1506 struct bfd_link_info *info;
1508 asection *input_section;
1510 Elf_Internal_Rela *relocs;
1511 Elf_Internal_Sym *local_syms;
1512 asection **local_sections;
1514 Elf_Internal_Shdr *symtab_hdr;
1515 struct elf_link_hash_entry **sym_hashes;
1516 Elf_Internal_Rela *rel, *relend;
1518 if (info->relocatable)
1521 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1522 sym_hashes = elf_sym_hashes (input_bfd);
1525 relend = relocs + input_section->reloc_count;
1526 for (; rel < relend; rel++)
1529 reloc_howto_type *howto;
1530 unsigned long r_symndx;
1531 Elf_Internal_Sym *sym;
1533 struct elf32_mn10300_link_hash_entry *h;
1535 bfd_reloc_status_type r;
1537 r_symndx = ELF32_R_SYM (rel->r_info);
1538 r_type = ELF32_R_TYPE (rel->r_info);
1539 howto = elf_mn10300_howto_table + r_type;
1541 /* Just skip the vtable gc relocs. */
1542 if (r_type == R_MN10300_GNU_VTINHERIT
1543 || r_type == R_MN10300_GNU_VTENTRY)
1549 if (r_symndx < symtab_hdr->sh_info)
1551 sym = local_syms + r_symndx;
1552 sec = local_sections[r_symndx];
1553 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1557 bfd_boolean unresolved_reloc;
1559 struct elf_link_hash_entry *hh;
1561 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1562 r_symndx, symtab_hdr, sym_hashes,
1563 hh, sec, relocation,
1564 unresolved_reloc, warned);
1566 h = (struct elf32_mn10300_link_hash_entry *) hh;
1568 if ((h->root.root.type == bfd_link_hash_defined
1569 || h->root.root.type == bfd_link_hash_defweak)
1570 && ( r_type == R_MN10300_GOTPC32
1571 || r_type == R_MN10300_GOTPC16
1572 || (( r_type == R_MN10300_PLT32
1573 || r_type == R_MN10300_PLT16)
1574 && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
1575 && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
1576 && h->root.plt.offset != (bfd_vma) -1)
1577 || (( r_type == R_MN10300_GOT32
1578 || r_type == R_MN10300_GOT24
1579 || r_type == R_MN10300_GOT16)
1580 && elf_hash_table (info)->dynamic_sections_created
1582 || (! info->symbolic && h->root.dynindx != -1)
1583 || (h->root.elf_link_hash_flags
1584 & ELF_LINK_HASH_DEF_REGULAR) == 0))
1586 && ((! info->symbolic && h->root.dynindx != -1)
1587 || (h->root.elf_link_hash_flags
1588 & ELF_LINK_HASH_DEF_REGULAR) == 0)
1589 && ( r_type == R_MN10300_32
1590 || r_type == R_MN10300_PCREL32)
1591 && ((input_section->flags & SEC_ALLOC) != 0
1592 /* DWARF will emit R_MN10300_32 relocations
1593 in its sections against symbols defined
1594 externally in shared libraries. We can't
1595 do anything with them here. */
1596 || ((input_section->flags & SEC_DEBUGGING) != 0
1597 && (h->root.elf_link_hash_flags
1598 & ELF_LINK_HASH_DEF_DYNAMIC) != 0)))))
1599 /* In these cases, we don't need the relocation
1600 value. We check specially because in some
1601 obscure cases sec->output_section will be NULL. */
1604 else if (unresolved_reloc)
1605 (*_bfd_error_handler)
1606 (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"),
1607 bfd_get_filename (input_bfd), h->root.root.root.string,
1608 bfd_get_section_name (input_bfd, input_section));
1611 r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd,
1613 contents, rel->r_offset,
1614 relocation, rel->r_addend,
1615 (struct elf_link_hash_entry *)h,
1617 info, sec, h == NULL);
1619 if (r != bfd_reloc_ok)
1622 const char *msg = (const char *) 0;
1625 name = h->root.root.root.string;
1628 name = (bfd_elf_string_from_elf_section
1629 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1630 if (name == NULL || *name == '\0')
1631 name = bfd_section_name (input_bfd, sec);
1636 case bfd_reloc_overflow:
1637 if (! ((*info->callbacks->reloc_overflow)
1638 (info, name, howto->name, (bfd_vma) 0,
1639 input_bfd, input_section, rel->r_offset)))
1643 case bfd_reloc_undefined:
1644 if (! ((*info->callbacks->undefined_symbol)
1645 (info, name, input_bfd, input_section,
1646 rel->r_offset, TRUE)))
1650 case bfd_reloc_outofrange:
1651 msg = _("internal error: out of range error");
1654 case bfd_reloc_notsupported:
1655 msg = _("internal error: unsupported relocation error");
1658 case bfd_reloc_dangerous:
1659 msg = _("internal error: dangerous error");
1663 msg = _("internal error: unknown error");
1667 if (!((*info->callbacks->warning)
1668 (info, msg, name, input_bfd, input_section,
1679 /* Finish initializing one hash table entry. */
1681 elf32_mn10300_finish_hash_table_entry (gen_entry, in_args)
1682 struct bfd_hash_entry *gen_entry;
1685 struct elf32_mn10300_link_hash_entry *entry;
1686 struct bfd_link_info *link_info = (struct bfd_link_info *)in_args;
1687 unsigned int byte_count = 0;
1689 entry = (struct elf32_mn10300_link_hash_entry *) gen_entry;
1691 if (entry->root.root.type == bfd_link_hash_warning)
1692 entry = (struct elf32_mn10300_link_hash_entry *) entry->root.root.u.i.link;
1694 /* If we already know we want to convert "call" to "calls" for calls
1695 to this symbol, then return now. */
1696 if (entry->flags == MN10300_CONVERT_CALL_TO_CALLS)
1699 /* If there are no named calls to this symbol, or there's nothing we
1700 can move from the function itself into the "call" instruction,
1701 then note that all "call" instructions should be converted into
1702 "calls" instructions and return. If a symbol is available for
1703 dynamic symbol resolution (overridable or overriding), avoid
1704 custom calling conventions. */
1705 if (entry->direct_calls == 0
1706 || (entry->stack_size == 0 && entry->movm_args == 0)
1707 || (elf_hash_table (link_info)->dynamic_sections_created
1708 && ELF_ST_VISIBILITY (entry->root.other) != STV_INTERNAL
1709 && ELF_ST_VISIBILITY (entry->root.other) != STV_HIDDEN))
1711 /* Make a note that we should convert "call" instructions to "calls"
1712 instructions for calls to this symbol. */
1713 entry->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1717 /* We may be able to move some instructions from the function itself into
1718 the "call" instruction. Count how many bytes we might be able to
1719 eliminate in the function itself. */
1721 /* A movm instruction is two bytes. */
1722 if (entry->movm_args)
1725 /* Count the insn to allocate stack space too. */
1726 if (entry->stack_size > 0)
1728 if (entry->stack_size <= 128)
1734 /* If using "call" will result in larger code, then turn all
1735 the associated "call" instructions into "calls" instructions. */
1736 if (byte_count < entry->direct_calls)
1737 entry->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1739 /* This routine never fails. */
1743 /* This function handles relaxing for the mn10300.
1745 There are quite a few relaxing opportunities available on the mn10300:
1747 * calls:32 -> calls:16 2 bytes
1748 * call:32 -> call:16 2 bytes
1750 * call:32 -> calls:32 1 byte
1751 * call:16 -> calls:16 1 byte
1752 * These are done anytime using "calls" would result
1753 in smaller code, or when necessary to preserve the
1754 meaning of the program.
1758 * In some circumstances we can move instructions
1759 from a function prologue into a "call" instruction.
1760 This is only done if the resulting code is no larger
1761 than the original code.
1763 * jmp:32 -> jmp:16 2 bytes
1764 * jmp:16 -> bra:8 1 byte
1766 * If the previous instruction is a conditional branch
1767 around the jump/bra, we may be able to reverse its condition
1768 and change its target to the jump's target. The jump/bra
1769 can then be deleted. 2 bytes
1771 * mov abs32 -> mov abs16 1 or 2 bytes
1773 * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes
1774 - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes
1776 * Most instructions which accept d32 can relax to d16 1 or 2 bytes
1777 - Most instructions which accept d16 can relax to d8 1 or 2 bytes
1779 We don't handle imm16->imm8 or d16->d8 as they're very rare
1780 and somewhat more difficult to support. */
1783 mn10300_elf_relax_section (abfd, sec, link_info, again)
1786 struct bfd_link_info *link_info;
1789 Elf_Internal_Shdr *symtab_hdr;
1790 Elf_Internal_Rela *internal_relocs = NULL;
1791 Elf_Internal_Rela *irel, *irelend;
1792 bfd_byte *contents = NULL;
1793 Elf_Internal_Sym *isymbuf = NULL;
1794 struct elf32_mn10300_link_hash_table *hash_table;
1795 asection *section = sec;
1797 /* Assume nothing changes. */
1800 /* We need a pointer to the mn10300 specific hash table. */
1801 hash_table = elf32_mn10300_hash_table (link_info);
1803 /* Initialize fields in each hash table entry the first time through. */
1804 if ((hash_table->flags & MN10300_HASH_ENTRIES_INITIALIZED) == 0)
1808 /* Iterate over all the input bfds. */
1809 for (input_bfd = link_info->input_bfds;
1811 input_bfd = input_bfd->link_next)
1813 /* We're going to need all the symbols for each bfd. */
1814 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1815 if (symtab_hdr->sh_info != 0)
1817 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1818 if (isymbuf == NULL)
1819 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
1820 symtab_hdr->sh_info, 0,
1822 if (isymbuf == NULL)
1826 /* Iterate over each section in this bfd. */
1827 for (section = input_bfd->sections;
1829 section = section->next)
1831 struct elf32_mn10300_link_hash_entry *hash;
1832 Elf_Internal_Sym *sym;
1833 asection *sym_sec = NULL;
1834 const char *sym_name;
1837 /* If there's nothing to do in this section, skip it. */
1838 if (! (((section->flags & SEC_RELOC) != 0
1839 && section->reloc_count != 0)
1840 || (section->flags & SEC_CODE) != 0))
1843 /* Get cached copy of section contents if it exists. */
1844 if (elf_section_data (section)->this_hdr.contents != NULL)
1845 contents = elf_section_data (section)->this_hdr.contents;
1846 else if (section->size != 0)
1848 /* Go get them off disk. */
1849 if (!bfd_malloc_and_get_section (input_bfd, section,
1856 /* If there aren't any relocs, then there's nothing to do. */
1857 if ((section->flags & SEC_RELOC) != 0
1858 && section->reloc_count != 0)
1861 /* Get a copy of the native relocations. */
1862 internal_relocs = (_bfd_elf_link_read_relocs
1863 (input_bfd, section, (PTR) NULL,
1864 (Elf_Internal_Rela *) NULL,
1865 link_info->keep_memory));
1866 if (internal_relocs == NULL)
1869 /* Now examine each relocation. */
1870 irel = internal_relocs;
1871 irelend = irel + section->reloc_count;
1872 for (; irel < irelend; irel++)
1875 unsigned long r_index;
1878 r_type = ELF32_R_TYPE (irel->r_info);
1879 r_index = ELF32_R_SYM (irel->r_info);
1881 if (r_type < 0 || r_type >= (int) R_MN10300_MAX)
1884 /* We need the name and hash table entry of the target
1890 if (r_index < symtab_hdr->sh_info)
1892 /* A local symbol. */
1893 Elf_Internal_Sym *isym;
1894 struct elf_link_hash_table *elftab;
1897 isym = isymbuf + r_index;
1898 if (isym->st_shndx == SHN_UNDEF)
1899 sym_sec = bfd_und_section_ptr;
1900 else if (isym->st_shndx == SHN_ABS)
1901 sym_sec = bfd_abs_section_ptr;
1902 else if (isym->st_shndx == SHN_COMMON)
1903 sym_sec = bfd_com_section_ptr;
1906 = bfd_section_from_elf_index (input_bfd,
1910 = bfd_elf_string_from_elf_section (input_bfd,
1915 /* If it isn't a function, then we don't care
1917 if (ELF_ST_TYPE (isym->st_info) != STT_FUNC)
1920 /* Tack on an ID so we can uniquely identify this
1921 local symbol in the global hash table. */
1922 amt = strlen (sym_name) + 10;
1923 new_name = bfd_malloc (amt);
1927 sprintf (new_name, "%s_%08x",
1928 sym_name, (int) sym_sec);
1929 sym_name = new_name;
1931 elftab = &hash_table->static_hash_table->root;
1932 hash = ((struct elf32_mn10300_link_hash_entry *)
1933 elf_link_hash_lookup (elftab, sym_name,
1934 TRUE, TRUE, FALSE));
1939 r_index -= symtab_hdr->sh_info;
1940 hash = (struct elf32_mn10300_link_hash_entry *)
1941 elf_sym_hashes (input_bfd)[r_index];
1944 /* If this is not a "call" instruction, then we
1945 should convert "call" instructions to "calls"
1947 code = bfd_get_8 (input_bfd,
1948 contents + irel->r_offset - 1);
1949 if (code != 0xdd && code != 0xcd)
1950 hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1952 /* If this is a jump/call, then bump the
1953 direct_calls counter. Else force "call" to
1954 "calls" conversions. */
1955 if (r_type == R_MN10300_PCREL32
1956 || r_type == R_MN10300_PLT32
1957 || r_type == R_MN10300_PLT16
1958 || r_type == R_MN10300_PCREL16)
1959 hash->direct_calls++;
1961 hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1965 /* Now look at the actual contents to get the stack size,
1966 and a list of what registers were saved in the prologue
1968 if ((section->flags & SEC_CODE) != 0)
1970 Elf_Internal_Sym *isym, *isymend;
1971 unsigned int sec_shndx;
1972 struct elf_link_hash_entry **hashes;
1973 struct elf_link_hash_entry **end_hashes;
1974 unsigned int symcount;
1976 sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
1979 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1980 - symtab_hdr->sh_info);
1981 hashes = elf_sym_hashes (input_bfd);
1982 end_hashes = hashes + symcount;
1984 /* Look at each function defined in this section and
1985 update info for that function. */
1986 isymend = isymbuf + symtab_hdr->sh_info;
1987 for (isym = isymbuf; isym < isymend; isym++)
1989 if (isym->st_shndx == sec_shndx
1990 && ELF_ST_TYPE (isym->st_info) == STT_FUNC)
1992 struct elf_link_hash_table *elftab;
1994 struct elf_link_hash_entry **lhashes = hashes;
1996 /* Skip a local symbol if it aliases a
1998 for (; lhashes < end_hashes; lhashes++)
2000 hash = (struct elf32_mn10300_link_hash_entry *) *lhashes;
2001 if ((hash->root.root.type == bfd_link_hash_defined
2002 || hash->root.root.type == bfd_link_hash_defweak)
2003 && hash->root.root.u.def.section == section
2004 && hash->root.type == STT_FUNC
2005 && hash->root.root.u.def.value == isym->st_value)
2008 if (lhashes != end_hashes)
2011 if (isym->st_shndx == SHN_UNDEF)
2012 sym_sec = bfd_und_section_ptr;
2013 else if (isym->st_shndx == SHN_ABS)
2014 sym_sec = bfd_abs_section_ptr;
2015 else if (isym->st_shndx == SHN_COMMON)
2016 sym_sec = bfd_com_section_ptr;
2019 = bfd_section_from_elf_index (input_bfd,
2022 sym_name = (bfd_elf_string_from_elf_section
2023 (input_bfd, symtab_hdr->sh_link,
2026 /* Tack on an ID so we can uniquely identify this
2027 local symbol in the global hash table. */
2028 amt = strlen (sym_name) + 10;
2029 new_name = bfd_malloc (amt);
2033 sprintf (new_name, "%s_%08x",
2034 sym_name, (int) sym_sec);
2035 sym_name = new_name;
2037 elftab = &hash_table->static_hash_table->root;
2038 hash = ((struct elf32_mn10300_link_hash_entry *)
2039 elf_link_hash_lookup (elftab, sym_name,
2040 TRUE, TRUE, FALSE));
2042 compute_function_info (input_bfd, hash,
2043 isym->st_value, contents);
2047 for (; hashes < end_hashes; hashes++)
2049 hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
2050 if ((hash->root.root.type == bfd_link_hash_defined
2051 || hash->root.root.type == bfd_link_hash_defweak)
2052 && hash->root.root.u.def.section == section
2053 && hash->root.type == STT_FUNC)
2054 compute_function_info (input_bfd, hash,
2055 (hash)->root.root.u.def.value,
2060 /* Cache or free any memory we allocated for the relocs. */
2061 if (internal_relocs != NULL
2062 && elf_section_data (section)->relocs != internal_relocs)
2063 free (internal_relocs);
2064 internal_relocs = NULL;
2066 /* Cache or free any memory we allocated for the contents. */
2067 if (contents != NULL
2068 && elf_section_data (section)->this_hdr.contents != contents)
2070 if (! link_info->keep_memory)
2074 /* Cache the section contents for elf_link_input_bfd. */
2075 elf_section_data (section)->this_hdr.contents = contents;
2081 /* Cache or free any memory we allocated for the symbols. */
2083 && symtab_hdr->contents != (unsigned char *) isymbuf)
2085 if (! link_info->keep_memory)
2089 /* Cache the symbols for elf_link_input_bfd. */
2090 symtab_hdr->contents = (unsigned char *) isymbuf;
2096 /* Now iterate on each symbol in the hash table and perform
2097 the final initialization steps on each. */
2098 elf32_mn10300_link_hash_traverse (hash_table,
2099 elf32_mn10300_finish_hash_table_entry,
2101 elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
2102 elf32_mn10300_finish_hash_table_entry,
2105 /* All entries in the hash table are fully initialized. */
2106 hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED;
2108 /* Now that everything has been initialized, go through each
2109 code section and delete any prologue insns which will be
2110 redundant because their operations will be performed by
2111 a "call" instruction. */
2112 for (input_bfd = link_info->input_bfds;
2114 input_bfd = input_bfd->link_next)
2116 /* We're going to need all the local symbols for each bfd. */
2117 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2118 if (symtab_hdr->sh_info != 0)
2120 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2121 if (isymbuf == NULL)
2122 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2123 symtab_hdr->sh_info, 0,
2125 if (isymbuf == NULL)
2129 /* Walk over each section in this bfd. */
2130 for (section = input_bfd->sections;
2132 section = section->next)
2134 unsigned int sec_shndx;
2135 Elf_Internal_Sym *isym, *isymend;
2136 struct elf_link_hash_entry **hashes;
2137 struct elf_link_hash_entry **end_hashes;
2138 unsigned int symcount;
2140 /* Skip non-code sections and empty sections. */
2141 if ((section->flags & SEC_CODE) == 0 || section->size == 0)
2144 if (section->reloc_count != 0)
2146 /* Get a copy of the native relocations. */
2147 internal_relocs = (_bfd_elf_link_read_relocs
2148 (input_bfd, section, (PTR) NULL,
2149 (Elf_Internal_Rela *) NULL,
2150 link_info->keep_memory));
2151 if (internal_relocs == NULL)
2155 /* Get cached copy of section contents if it exists. */
2156 if (elf_section_data (section)->this_hdr.contents != NULL)
2157 contents = elf_section_data (section)->this_hdr.contents;
2160 /* Go get them off disk. */
2161 if (!bfd_malloc_and_get_section (input_bfd, section,
2166 sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
2169 /* Now look for any function in this section which needs
2170 insns deleted from its prologue. */
2171 isymend = isymbuf + symtab_hdr->sh_info;
2172 for (isym = isymbuf; isym < isymend; isym++)
2174 struct elf32_mn10300_link_hash_entry *sym_hash;
2175 asection *sym_sec = NULL;
2176 const char *sym_name;
2178 struct elf_link_hash_table *elftab;
2181 if (isym->st_shndx != sec_shndx)
2184 if (isym->st_shndx == SHN_UNDEF)
2185 sym_sec = bfd_und_section_ptr;
2186 else if (isym->st_shndx == SHN_ABS)
2187 sym_sec = bfd_abs_section_ptr;
2188 else if (isym->st_shndx == SHN_COMMON)
2189 sym_sec = bfd_com_section_ptr;
2192 = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
2195 = bfd_elf_string_from_elf_section (input_bfd,
2196 symtab_hdr->sh_link,
2199 /* Tack on an ID so we can uniquely identify this
2200 local symbol in the global hash table. */
2201 amt = strlen (sym_name) + 10;
2202 new_name = bfd_malloc (amt);
2205 sprintf (new_name, "%s_%08x", sym_name, (int) sym_sec);
2206 sym_name = new_name;
2208 elftab = &hash_table->static_hash_table->root;
2209 sym_hash = ((struct elf32_mn10300_link_hash_entry *)
2210 elf_link_hash_lookup (elftab, sym_name,
2211 FALSE, FALSE, FALSE));
2214 if (sym_hash == NULL)
2217 if (! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
2218 && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
2222 /* Note that we've changed things. */
2223 elf_section_data (section)->relocs = internal_relocs;
2224 elf_section_data (section)->this_hdr.contents = contents;
2225 symtab_hdr->contents = (unsigned char *) isymbuf;
2227 /* Count how many bytes we're going to delete. */
2228 if (sym_hash->movm_args)
2231 if (sym_hash->stack_size > 0)
2233 if (sym_hash->stack_size <= 128)
2239 /* Note that we've deleted prologue bytes for this
2241 sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
2243 /* Actually delete the bytes. */
2244 if (!mn10300_elf_relax_delete_bytes (input_bfd,
2250 /* Something changed. Not strictly necessary, but
2251 may lead to more relaxing opportunities. */
2256 /* Look for any global functions in this section which
2257 need insns deleted from their prologues. */
2258 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2259 - symtab_hdr->sh_info);
2260 hashes = elf_sym_hashes (input_bfd);
2261 end_hashes = hashes + symcount;
2262 for (; hashes < end_hashes; hashes++)
2264 struct elf32_mn10300_link_hash_entry *sym_hash;
2266 sym_hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
2267 if ((sym_hash->root.root.type == bfd_link_hash_defined
2268 || sym_hash->root.root.type == bfd_link_hash_defweak)
2269 && sym_hash->root.root.u.def.section == section
2270 && ! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
2271 && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
2276 /* Note that we've changed things. */
2277 elf_section_data (section)->relocs = internal_relocs;
2278 elf_section_data (section)->this_hdr.contents = contents;
2279 symtab_hdr->contents = (unsigned char *) isymbuf;
2281 /* Count how many bytes we're going to delete. */
2282 if (sym_hash->movm_args)
2285 if (sym_hash->stack_size > 0)
2287 if (sym_hash->stack_size <= 128)
2293 /* Note that we've deleted prologue bytes for this
2295 sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
2297 /* Actually delete the bytes. */
2298 symval = sym_hash->root.root.u.def.value;
2299 if (!mn10300_elf_relax_delete_bytes (input_bfd,
2305 /* Something changed. Not strictly necessary, but
2306 may lead to more relaxing opportunities. */
2311 /* Cache or free any memory we allocated for the relocs. */
2312 if (internal_relocs != NULL
2313 && elf_section_data (section)->relocs != internal_relocs)
2314 free (internal_relocs);
2315 internal_relocs = NULL;
2317 /* Cache or free any memory we allocated for the contents. */
2318 if (contents != NULL
2319 && elf_section_data (section)->this_hdr.contents != contents)
2321 if (! link_info->keep_memory)
2325 /* Cache the section contents for elf_link_input_bfd. */
2326 elf_section_data (section)->this_hdr.contents = contents;
2332 /* Cache or free any memory we allocated for the symbols. */
2334 && symtab_hdr->contents != (unsigned char *) isymbuf)
2336 if (! link_info->keep_memory)
2340 /* Cache the symbols for elf_link_input_bfd. */
2341 symtab_hdr->contents = (unsigned char *) isymbuf;
2348 /* (Re)initialize for the basic instruction shortening/relaxing pass. */
2350 internal_relocs = NULL;
2352 /* For error_return. */
2355 /* We don't have to do anything for a relocatable link, if
2356 this section does not have relocs, or if this is not a
2358 if (link_info->relocatable
2359 || (sec->flags & SEC_RELOC) == 0
2360 || sec->reloc_count == 0
2361 || (sec->flags & SEC_CODE) == 0)
2364 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2366 /* Get a copy of the native relocations. */
2367 internal_relocs = (_bfd_elf_link_read_relocs
2368 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
2369 link_info->keep_memory));
2370 if (internal_relocs == NULL)
2373 /* Walk through them looking for relaxing opportunities. */
2374 irelend = internal_relocs + sec->reloc_count;
2375 for (irel = internal_relocs; irel < irelend; irel++)
2378 struct elf32_mn10300_link_hash_entry *h = NULL;
2380 /* If this isn't something that can be relaxed, then ignore
2382 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_NONE
2383 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8
2384 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_MAX)
2387 /* Get the section contents if we haven't done so already. */
2388 if (contents == NULL)
2390 /* Get cached copy if it exists. */
2391 if (elf_section_data (sec)->this_hdr.contents != NULL)
2392 contents = elf_section_data (sec)->this_hdr.contents;
2395 /* Go get them off disk. */
2396 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2401 /* Read this BFD's symbols if we haven't done so already. */
2402 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
2404 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2405 if (isymbuf == NULL)
2406 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
2407 symtab_hdr->sh_info, 0,
2409 if (isymbuf == NULL)
2413 /* Get the value of the symbol referred to by the reloc. */
2414 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
2416 Elf_Internal_Sym *isym;
2417 asection *sym_sec = NULL;
2418 const char *sym_name;
2420 bfd_vma saved_addend;
2422 /* A local symbol. */
2423 isym = isymbuf + ELF32_R_SYM (irel->r_info);
2424 if (isym->st_shndx == SHN_UNDEF)
2425 sym_sec = bfd_und_section_ptr;
2426 else if (isym->st_shndx == SHN_ABS)
2427 sym_sec = bfd_abs_section_ptr;
2428 else if (isym->st_shndx == SHN_COMMON)
2429 sym_sec = bfd_com_section_ptr;
2431 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2433 sym_name = bfd_elf_string_from_elf_section (abfd,
2434 symtab_hdr->sh_link,
2437 if ((sym_sec->flags & SEC_MERGE)
2438 && ELF_ST_TYPE (isym->st_info) == STT_SECTION
2439 && sym_sec->sec_info_type == ELF_INFO_TYPE_MERGE)
2441 saved_addend = irel->r_addend;
2442 symval = _bfd_elf_rela_local_sym (abfd, isym, &sym_sec, irel);
2443 symval += irel->r_addend;
2444 irel->r_addend = saved_addend;
2448 symval = (isym->st_value
2449 + sym_sec->output_section->vma
2450 + sym_sec->output_offset);
2452 /* Tack on an ID so we can uniquely identify this
2453 local symbol in the global hash table. */
2454 new_name = bfd_malloc ((bfd_size_type) strlen (sym_name) + 10);
2457 sprintf (new_name, "%s_%08x", sym_name, (int) sym_sec);
2458 sym_name = new_name;
2460 h = (struct elf32_mn10300_link_hash_entry *)
2461 elf_link_hash_lookup (&hash_table->static_hash_table->root,
2462 sym_name, FALSE, FALSE, FALSE);
2469 /* An external symbol. */
2470 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2471 h = (struct elf32_mn10300_link_hash_entry *)
2472 (elf_sym_hashes (abfd)[indx]);
2473 BFD_ASSERT (h != NULL);
2474 if (h->root.root.type != bfd_link_hash_defined
2475 && h->root.root.type != bfd_link_hash_defweak)
2477 /* This appears to be a reference to an undefined
2478 symbol. Just ignore it--it will be caught by the
2479 regular reloc processing. */
2483 symval = (h->root.root.u.def.value
2484 + h->root.root.u.def.section->output_section->vma
2485 + h->root.root.u.def.section->output_offset);
2488 /* For simplicity of coding, we are going to modify the section
2489 contents, the section relocs, and the BFD symbol table. We
2490 must tell the rest of the code not to free up this
2491 information. It would be possible to instead create a table
2492 of changes which have to be made, as is done in coff-mips.c;
2493 that would be more work, but would require less memory when
2494 the linker is run. */
2496 /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative
2497 branch/call, also deal with "call" -> "calls" conversions and
2498 insertion of prologue data into "call" instructions. */
2499 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32
2500 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32)
2502 bfd_vma value = symval;
2504 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32
2506 && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
2507 && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
2508 && h->root.plt.offset != (bfd_vma) -1)
2512 splt = bfd_get_section_by_name (elf_hash_table (link_info)
2515 value = ((splt->output_section->vma
2516 + splt->output_offset
2517 + h->root.plt.offset)
2518 - (sec->output_section->vma
2519 + sec->output_offset
2523 /* If we've got a "call" instruction that needs to be turned
2524 into a "calls" instruction, do so now. It saves a byte. */
2525 if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
2529 /* Get the opcode. */
2530 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2532 /* Make sure we're working with a "call" instruction! */
2535 /* Note that we've changed the relocs, section contents,
2537 elf_section_data (sec)->relocs = internal_relocs;
2538 elf_section_data (sec)->this_hdr.contents = contents;
2539 symtab_hdr->contents = (unsigned char *) isymbuf;
2541 /* Fix the opcode. */
2542 bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1);
2543 bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
2545 /* Fix irel->r_offset and irel->r_addend. */
2546 irel->r_offset += 1;
2547 irel->r_addend += 1;
2549 /* Delete one byte of data. */
2550 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2551 irel->r_offset + 3, 1))
2554 /* That will change things, so, we should relax again.
2555 Note that this is not required, and it may be slow. */
2561 /* We've got a "call" instruction which needs some data
2562 from target function filled in. */
2565 /* Get the opcode. */
2566 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2568 /* Insert data from the target function into the "call"
2569 instruction if needed. */
2572 bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 4);
2573 bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
2574 contents + irel->r_offset + 5);
2578 /* Deal with pc-relative gunk. */
2579 value -= (sec->output_section->vma + sec->output_offset);
2580 value -= irel->r_offset;
2581 value += irel->r_addend;
2583 /* See if the value will fit in 16 bits, note the high value is
2584 0x7fff + 2 as the target will be two bytes closer if we are
2586 if ((long) value < 0x8001 && (long) value > -0x8000)
2590 /* Get the opcode. */
2591 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2593 if (code != 0xdc && code != 0xdd && code != 0xff)
2596 /* Note that we've changed the relocs, section contents, etc. */
2597 elf_section_data (sec)->relocs = internal_relocs;
2598 elf_section_data (sec)->this_hdr.contents = contents;
2599 symtab_hdr->contents = (unsigned char *) isymbuf;
2601 /* Fix the opcode. */
2603 bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1);
2604 else if (code == 0xdd)
2605 bfd_put_8 (abfd, 0xcd, contents + irel->r_offset - 1);
2606 else if (code == 0xff)
2607 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
2609 /* Fix the relocation's type. */
2610 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2611 (ELF32_R_TYPE (irel->r_info)
2612 == (int) R_MN10300_PLT32)
2616 /* Delete two bytes of data. */
2617 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2618 irel->r_offset + 1, 2))
2621 /* That will change things, so, we should relax again.
2622 Note that this is not required, and it may be slow. */
2627 /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative
2629 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL16)
2631 bfd_vma value = symval;
2633 /* If we've got a "call" instruction that needs to be turned
2634 into a "calls" instruction, do so now. It saves a byte. */
2635 if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
2639 /* Get the opcode. */
2640 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2642 /* Make sure we're working with a "call" instruction! */
2645 /* Note that we've changed the relocs, section contents,
2647 elf_section_data (sec)->relocs = internal_relocs;
2648 elf_section_data (sec)->this_hdr.contents = contents;
2649 symtab_hdr->contents = (unsigned char *) isymbuf;
2651 /* Fix the opcode. */
2652 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1);
2653 bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
2655 /* Fix irel->r_offset and irel->r_addend. */
2656 irel->r_offset += 1;
2657 irel->r_addend += 1;
2659 /* Delete one byte of data. */
2660 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2661 irel->r_offset + 1, 1))
2664 /* That will change things, so, we should relax again.
2665 Note that this is not required, and it may be slow. */
2673 /* Get the opcode. */
2674 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2676 /* Insert data from the target function into the "call"
2677 instruction if needed. */
2680 bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 2);
2681 bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
2682 contents + irel->r_offset + 3);
2686 /* Deal with pc-relative gunk. */
2687 value -= (sec->output_section->vma + sec->output_offset);
2688 value -= irel->r_offset;
2689 value += irel->r_addend;
2691 /* See if the value will fit in 8 bits, note the high value is
2692 0x7f + 1 as the target will be one bytes closer if we are
2694 if ((long) value < 0x80 && (long) value > -0x80)
2698 /* Get the opcode. */
2699 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2704 /* Note that we've changed the relocs, section contents, etc. */
2705 elf_section_data (sec)->relocs = internal_relocs;
2706 elf_section_data (sec)->this_hdr.contents = contents;
2707 symtab_hdr->contents = (unsigned char *) isymbuf;
2709 /* Fix the opcode. */
2710 bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1);
2712 /* Fix the relocation's type. */
2713 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2716 /* Delete one byte of data. */
2717 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2718 irel->r_offset + 1, 1))
2721 /* That will change things, so, we should relax again.
2722 Note that this is not required, and it may be slow. */
2727 /* Try to eliminate an unconditional 8 bit pc-relative branch
2728 which immediately follows a conditional 8 bit pc-relative
2729 branch around the unconditional branch.
2736 This happens when the bCC can't reach lab2 at assembly time,
2737 but due to other relaxations it can reach at link time. */
2738 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8)
2740 Elf_Internal_Rela *nrel;
2741 bfd_vma value = symval;
2744 /* Deal with pc-relative gunk. */
2745 value -= (sec->output_section->vma + sec->output_offset);
2746 value -= irel->r_offset;
2747 value += irel->r_addend;
2749 /* Do nothing if this reloc is the last byte in the section. */
2750 if (irel->r_offset == sec->size)
2753 /* See if the next instruction is an unconditional pc-relative
2754 branch, more often than not this test will fail, so we
2755 test it first to speed things up. */
2756 code = bfd_get_8 (abfd, contents + irel->r_offset + 1);
2760 /* Also make sure the next relocation applies to the next
2761 instruction and that it's a pc-relative 8 bit branch. */
2764 || irel->r_offset + 2 != nrel->r_offset
2765 || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10300_PCREL8)
2768 /* Make sure our destination immediately follows the
2769 unconditional branch. */
2770 if (symval != (sec->output_section->vma + sec->output_offset
2771 + irel->r_offset + 3))
2774 /* Now make sure we are a conditional branch. This may not
2775 be necessary, but why take the chance.
2777 Note these checks assume that R_MN10300_PCREL8 relocs
2778 only occur on bCC and bCCx insns. If they occured
2779 elsewhere, we'd need to know the start of this insn
2780 for this check to be accurate. */
2781 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2782 if (code != 0xc0 && code != 0xc1 && code != 0xc2
2783 && code != 0xc3 && code != 0xc4 && code != 0xc5
2784 && code != 0xc6 && code != 0xc7 && code != 0xc8
2785 && code != 0xc9 && code != 0xe8 && code != 0xe9
2786 && code != 0xea && code != 0xeb)
2789 /* We also have to be sure there is no symbol/label
2790 at the unconditional branch. */
2791 if (mn10300_elf_symbol_address_p (abfd, sec, isymbuf,
2792 irel->r_offset + 1))
2795 /* Note that we've changed the relocs, section contents, etc. */
2796 elf_section_data (sec)->relocs = internal_relocs;
2797 elf_section_data (sec)->this_hdr.contents = contents;
2798 symtab_hdr->contents = (unsigned char *) isymbuf;
2800 /* Reverse the condition of the first branch. */
2846 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
2848 /* Set the reloc type and symbol for the first branch
2849 from the second branch. */
2850 irel->r_info = nrel->r_info;
2852 /* Make the reloc for the second branch a null reloc. */
2853 nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info),
2856 /* Delete two bytes of data. */
2857 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2858 irel->r_offset + 1, 2))
2861 /* That will change things, so, we should relax again.
2862 Note that this is not required, and it may be slow. */
2866 /* Try to turn a 24 immediate, displacement or absolute address
2867 into a 8 immediate, displacement or absolute address. */
2868 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_24)
2870 bfd_vma value = symval;
2871 value += irel->r_addend;
2873 /* See if the value will fit in 8 bits. */
2874 if ((long) value < 0x7f && (long) value > -0x80)
2878 /* AM33 insns which have 24 operands are 6 bytes long and
2879 will have 0xfd as the first byte. */
2881 /* Get the first opcode. */
2882 code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
2886 /* Get the second opcode. */
2887 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
2889 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
2890 equivalent instructions exists. */
2891 if (code != 0x6b && code != 0x7b
2892 && code != 0x8b && code != 0x9b
2893 && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
2894 || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
2895 || (code & 0x0f) == 0x0e))
2897 /* Not safe if the high bit is on as relaxing may
2898 move the value out of high mem and thus not fit
2899 in a signed 8bit value. This is currently over
2901 if ((value & 0x80) == 0)
2903 /* Note that we've changed the relocation contents,
2905 elf_section_data (sec)->relocs = internal_relocs;
2906 elf_section_data (sec)->this_hdr.contents = contents;
2907 symtab_hdr->contents = (unsigned char *) isymbuf;
2909 /* Fix the opcode. */
2910 bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3);
2911 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
2913 /* Fix the relocation's type. */
2915 ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2918 /* Delete two bytes of data. */
2919 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2920 irel->r_offset + 1, 2))
2923 /* That will change things, so, we should relax
2924 again. Note that this is not required, and it
2934 /* Try to turn a 32bit immediate, displacement or absolute address
2935 into a 16bit immediate, displacement or absolute address. */
2936 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32
2937 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32
2938 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32
2939 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32)
2941 bfd_vma value = symval;
2943 if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32)
2947 sgot = bfd_get_section_by_name (elf_hash_table (link_info)
2950 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32)
2952 value = sgot->output_offset;
2955 value += h->root.got.offset;
2957 value += (elf_local_got_offsets
2958 (abfd)[ELF32_R_SYM (irel->r_info)]);
2960 else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32)
2961 value -= sgot->output_section->vma;
2962 else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32)
2963 value = (sgot->output_section->vma
2964 - (sec->output_section->vma
2965 + sec->output_offset
2971 value += irel->r_addend;
2973 /* See if the value will fit in 24 bits.
2974 We allow any 16bit match here. We prune those we can't
2976 if ((long) value < 0x7fffff && (long) value > -0x800000)
2980 /* AM33 insns which have 32bit operands are 7 bytes long and
2981 will have 0xfe as the first byte. */
2983 /* Get the first opcode. */
2984 code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
2988 /* Get the second opcode. */
2989 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
2991 /* All the am33 32 -> 24 relaxing possibilities. */
2992 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
2993 equivalent instructions exists. */
2994 if (code != 0x6b && code != 0x7b
2995 && code != 0x8b && code != 0x9b
2996 && (ELF32_R_TYPE (irel->r_info)
2997 != (int) R_MN10300_GOTPC32)
2998 && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
2999 || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
3000 || (code & 0x0f) == 0x0e))
3002 /* Not safe if the high bit is on as relaxing may
3003 move the value out of high mem and thus not fit
3004 in a signed 16bit value. This is currently over
3006 if ((value & 0x8000) == 0)
3008 /* Note that we've changed the relocation contents,
3010 elf_section_data (sec)->relocs = internal_relocs;
3011 elf_section_data (sec)->this_hdr.contents = contents;
3012 symtab_hdr->contents = (unsigned char *) isymbuf;
3014 /* Fix the opcode. */
3015 bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3);
3016 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3018 /* Fix the relocation's type. */
3020 ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3021 (ELF32_R_TYPE (irel->r_info)
3022 == (int) R_MN10300_GOTOFF32)
3023 ? R_MN10300_GOTOFF24
3024 : (ELF32_R_TYPE (irel->r_info)
3025 == (int) R_MN10300_GOT32)
3029 /* Delete one byte of data. */
3030 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3031 irel->r_offset + 3, 1))
3034 /* That will change things, so, we should relax
3035 again. Note that this is not required, and it
3044 /* See if the value will fit in 16 bits.
3045 We allow any 16bit match here. We prune those we can't
3047 if ((long) value < 0x7fff && (long) value > -0x8000)
3051 /* Most insns which have 32bit operands are 6 bytes long;
3052 exceptions are pcrel insns and bit insns.
3054 We handle pcrel insns above. We don't bother trying
3055 to handle the bit insns here.
3057 The first byte of the remaining insns will be 0xfc. */
3059 /* Get the first opcode. */
3060 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
3065 /* Get the second opcode. */
3066 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3068 if ((code & 0xf0) < 0x80)
3069 switch (code & 0xf0)
3071 /* mov (d32,am),dn -> mov (d32,am),dn
3072 mov dm,(d32,am) -> mov dn,(d32,am)
3073 mov (d32,am),an -> mov (d32,am),an
3074 mov dm,(d32,am) -> mov dn,(d32,am)
3075 movbu (d32,am),dn -> movbu (d32,am),dn
3076 movbu dm,(d32,am) -> movbu dn,(d32,am)
3077 movhu (d32,am),dn -> movhu (d32,am),dn
3078 movhu dm,(d32,am) -> movhu dn,(d32,am) */
3087 /* Not safe if the high bit is on as relaxing may
3088 move the value out of high mem and thus not fit
3089 in a signed 16bit value. */
3091 && (value & 0x8000))
3094 /* Note that we've changed the relocation contents, etc. */
3095 elf_section_data (sec)->relocs = internal_relocs;
3096 elf_section_data (sec)->this_hdr.contents = contents;
3097 symtab_hdr->contents = (unsigned char *) isymbuf;
3099 /* Fix the opcode. */
3100 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3101 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3103 /* Fix the relocation's type. */
3104 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3105 (ELF32_R_TYPE (irel->r_info)
3106 == (int) R_MN10300_GOTOFF32)
3107 ? R_MN10300_GOTOFF16
3108 : (ELF32_R_TYPE (irel->r_info)
3109 == (int) R_MN10300_GOT32)
3111 : (ELF32_R_TYPE (irel->r_info)
3112 == (int) R_MN10300_GOTPC32)
3113 ? R_MN10300_GOTPC16 :
3116 /* Delete two bytes of data. */
3117 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3118 irel->r_offset + 2, 2))
3121 /* That will change things, so, we should relax again.
3122 Note that this is not required, and it may be slow. */
3126 else if ((code & 0xf0) == 0x80
3127 || (code & 0xf0) == 0x90)
3128 switch (code & 0xf3)
3130 /* mov dn,(abs32) -> mov dn,(abs16)
3131 movbu dn,(abs32) -> movbu dn,(abs16)
3132 movhu dn,(abs32) -> movhu dn,(abs16) */
3136 /* Note that we've changed the relocation contents, etc. */
3137 elf_section_data (sec)->relocs = internal_relocs;
3138 elf_section_data (sec)->this_hdr.contents = contents;
3139 symtab_hdr->contents = (unsigned char *) isymbuf;
3141 if ((code & 0xf3) == 0x81)
3142 code = 0x01 + (code & 0x0c);
3143 else if ((code & 0xf3) == 0x82)
3144 code = 0x02 + (code & 0x0c);
3145 else if ((code & 0xf3) == 0x83)
3146 code = 0x03 + (code & 0x0c);
3150 /* Fix the opcode. */
3151 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3153 /* Fix the relocation's type. */
3154 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3155 (ELF32_R_TYPE (irel->r_info)
3156 == (int) R_MN10300_GOTOFF32)
3157 ? R_MN10300_GOTOFF16
3158 : (ELF32_R_TYPE (irel->r_info)
3159 == (int) R_MN10300_GOT32)
3161 : (ELF32_R_TYPE (irel->r_info)
3162 == (int) R_MN10300_GOTPC32)
3163 ? R_MN10300_GOTPC16 :
3166 /* The opcode got shorter too, so we have to fix the
3167 addend and offset too! */
3168 irel->r_offset -= 1;
3170 /* Delete three bytes of data. */
3171 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3172 irel->r_offset + 1, 3))
3175 /* That will change things, so, we should relax again.
3176 Note that this is not required, and it may be slow. */
3180 /* mov am,(abs32) -> mov am,(abs16)
3181 mov am,(d32,sp) -> mov am,(d16,sp)
3182 mov dm,(d32,sp) -> mov dm,(d32,sp)
3183 movbu dm,(d32,sp) -> movbu dm,(d32,sp)
3184 movhu dm,(d32,sp) -> movhu dm,(d32,sp) */
3190 /* sp-based offsets are zero-extended. */
3191 if (code >= 0x90 && code <= 0x93
3195 /* Note that we've changed the relocation contents, etc. */
3196 elf_section_data (sec)->relocs = internal_relocs;
3197 elf_section_data (sec)->this_hdr.contents = contents;
3198 symtab_hdr->contents = (unsigned char *) isymbuf;
3200 /* Fix the opcode. */
3201 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3202 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3204 /* Fix the relocation's type. */
3205 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3206 (ELF32_R_TYPE (irel->r_info)
3207 == (int) R_MN10300_GOTOFF32)
3208 ? R_MN10300_GOTOFF16
3209 : (ELF32_R_TYPE (irel->r_info)
3210 == (int) R_MN10300_GOT32)
3212 : (ELF32_R_TYPE (irel->r_info)
3213 == (int) R_MN10300_GOTPC32)
3214 ? R_MN10300_GOTPC16 :
3217 /* Delete two bytes of data. */
3218 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3219 irel->r_offset + 2, 2))
3222 /* That will change things, so, we should relax again.
3223 Note that this is not required, and it may be slow. */
3227 else if ((code & 0xf0) < 0xf0)
3228 switch (code & 0xfc)
3230 /* mov imm32,dn -> mov imm16,dn
3231 mov imm32,an -> mov imm16,an
3232 mov (abs32),dn -> mov (abs16),dn
3233 movbu (abs32),dn -> movbu (abs16),dn
3234 movhu (abs32),dn -> movhu (abs16),dn */
3240 /* Not safe if the high bit is on as relaxing may
3241 move the value out of high mem and thus not fit
3242 in a signed 16bit value. */
3244 && (value & 0x8000))
3247 /* mov imm16, an zero-extends the immediate. */
3252 /* Note that we've changed the relocation contents, etc. */
3253 elf_section_data (sec)->relocs = internal_relocs;
3254 elf_section_data (sec)->this_hdr.contents = contents;
3255 symtab_hdr->contents = (unsigned char *) isymbuf;
3257 if ((code & 0xfc) == 0xcc)
3258 code = 0x2c + (code & 0x03);
3259 else if ((code & 0xfc) == 0xdc)
3260 code = 0x24 + (code & 0x03);
3261 else if ((code & 0xfc) == 0xa4)
3262 code = 0x30 + (code & 0x03);
3263 else if ((code & 0xfc) == 0xa8)
3264 code = 0x34 + (code & 0x03);
3265 else if ((code & 0xfc) == 0xac)
3266 code = 0x38 + (code & 0x03);
3270 /* Fix the opcode. */
3271 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3273 /* Fix the relocation's type. */
3274 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3275 (ELF32_R_TYPE (irel->r_info)
3276 == (int) R_MN10300_GOTOFF32)
3277 ? R_MN10300_GOTOFF16
3278 : (ELF32_R_TYPE (irel->r_info)
3279 == (int) R_MN10300_GOT32)
3281 : (ELF32_R_TYPE (irel->r_info)
3282 == (int) R_MN10300_GOTPC32)
3283 ? R_MN10300_GOTPC16 :
3286 /* The opcode got shorter too, so we have to fix the
3287 addend and offset too! */
3288 irel->r_offset -= 1;
3290 /* Delete three bytes of data. */
3291 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3292 irel->r_offset + 1, 3))
3295 /* That will change things, so, we should relax again.
3296 Note that this is not required, and it may be slow. */
3300 /* mov (abs32),an -> mov (abs16),an
3301 mov (d32,sp),an -> mov (d16,sp),an
3302 mov (d32,sp),dn -> mov (d16,sp),dn
3303 movbu (d32,sp),dn -> movbu (d16,sp),dn
3304 movhu (d32,sp),dn -> movhu (d16,sp),dn
3305 add imm32,dn -> add imm16,dn
3306 cmp imm32,dn -> cmp imm16,dn
3307 add imm32,an -> add imm16,an
3308 cmp imm32,an -> cmp imm16,an
3309 and imm32,dn -> and imm16,dn
3310 or imm32,dn -> or imm16,dn
3311 xor imm32,dn -> xor imm16,dn
3312 btst imm32,dn -> btst imm16,dn */
3328 /* cmp imm16, an zero-extends the immediate. */
3333 /* So do sp-based offsets. */
3334 if (code >= 0xb0 && code <= 0xb3
3338 /* Note that we've changed the relocation contents, etc. */
3339 elf_section_data (sec)->relocs = internal_relocs;
3340 elf_section_data (sec)->this_hdr.contents = contents;
3341 symtab_hdr->contents = (unsigned char *) isymbuf;
3343 /* Fix the opcode. */
3344 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3345 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3347 /* Fix the relocation's type. */
3348 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3349 (ELF32_R_TYPE (irel->r_info)
3350 == (int) R_MN10300_GOTOFF32)
3351 ? R_MN10300_GOTOFF16
3352 : (ELF32_R_TYPE (irel->r_info)
3353 == (int) R_MN10300_GOT32)
3355 : (ELF32_R_TYPE (irel->r_info)
3356 == (int) R_MN10300_GOTPC32)
3357 ? R_MN10300_GOTPC16 :
3360 /* Delete two bytes of data. */
3361 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3362 irel->r_offset + 2, 2))
3365 /* That will change things, so, we should relax again.
3366 Note that this is not required, and it may be slow. */
3370 else if (code == 0xfe)
3372 /* add imm32,sp -> add imm16,sp */
3374 /* Note that we've changed the relocation contents, etc. */
3375 elf_section_data (sec)->relocs = internal_relocs;
3376 elf_section_data (sec)->this_hdr.contents = contents;
3377 symtab_hdr->contents = (unsigned char *) isymbuf;
3379 /* Fix the opcode. */
3380 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3381 bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1);
3383 /* Fix the relocation's type. */
3384 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3385 (ELF32_R_TYPE (irel->r_info)
3386 == (int) R_MN10300_GOT32)
3388 : (ELF32_R_TYPE (irel->r_info)
3389 == (int) R_MN10300_GOTOFF32)
3390 ? R_MN10300_GOTOFF16
3391 : (ELF32_R_TYPE (irel->r_info)
3392 == (int) R_MN10300_GOTPC32)
3393 ? R_MN10300_GOTPC16 :
3396 /* Delete two bytes of data. */
3397 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3398 irel->r_offset + 2, 2))
3401 /* That will change things, so, we should relax again.
3402 Note that this is not required, and it may be slow. */
3411 && symtab_hdr->contents != (unsigned char *) isymbuf)
3413 if (! link_info->keep_memory)
3417 /* Cache the symbols for elf_link_input_bfd. */
3418 symtab_hdr->contents = (unsigned char *) isymbuf;
3422 if (contents != NULL
3423 && elf_section_data (sec)->this_hdr.contents != contents)
3425 if (! link_info->keep_memory)
3429 /* Cache the section contents for elf_link_input_bfd. */
3430 elf_section_data (sec)->this_hdr.contents = contents;
3434 if (internal_relocs != NULL
3435 && elf_section_data (sec)->relocs != internal_relocs)
3436 free (internal_relocs);
3442 && symtab_hdr->contents != (unsigned char *) isymbuf)
3444 if (contents != NULL
3445 && elf_section_data (section)->this_hdr.contents != contents)
3447 if (internal_relocs != NULL
3448 && elf_section_data (section)->relocs != internal_relocs)
3449 free (internal_relocs);
3454 /* Compute the stack size and movm arguments for the function
3455 referred to by HASH at address ADDR in section with
3456 contents CONTENTS, store the information in the hash table. */
3458 compute_function_info (abfd, hash, addr, contents)
3460 struct elf32_mn10300_link_hash_entry *hash;
3462 unsigned char *contents;
3464 unsigned char byte1, byte2;
3465 /* We only care about a very small subset of the possible prologue
3466 sequences here. Basically we look for:
3468 movm [d2,d3,a2,a3],sp (optional)
3469 add <size>,sp (optional, and only for sizes which fit in an unsigned
3472 If we find anything else, we quit. */
3474 /* Look for movm [regs],sp */
3475 byte1 = bfd_get_8 (abfd, contents + addr);
3476 byte2 = bfd_get_8 (abfd, contents + addr + 1);
3480 hash->movm_args = byte2;
3482 byte1 = bfd_get_8 (abfd, contents + addr);
3483 byte2 = bfd_get_8 (abfd, contents + addr + 1);
3486 /* Now figure out how much stack space will be allocated by the movm
3487 instruction. We need this kept separate from the function's normal
3489 if (hash->movm_args)
3492 if (hash->movm_args & 0x80)
3493 hash->movm_stack_size += 4;
3496 if (hash->movm_args & 0x40)
3497 hash->movm_stack_size += 4;
3500 if (hash->movm_args & 0x20)
3501 hash->movm_stack_size += 4;
3504 if (hash->movm_args & 0x10)
3505 hash->movm_stack_size += 4;
3507 /* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */
3508 if (hash->movm_args & 0x08)
3509 hash->movm_stack_size += 8 * 4;
3511 if (bfd_get_mach (abfd) == bfd_mach_am33
3512 || bfd_get_mach (abfd) == bfd_mach_am33_2)
3514 /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */
3515 if (hash->movm_args & 0x1)
3516 hash->movm_stack_size += 6 * 4;
3518 /* exreg1 space. e4, e5, e6, e7 */
3519 if (hash->movm_args & 0x2)
3520 hash->movm_stack_size += 4 * 4;
3522 /* exreg0 space. e2, e3 */
3523 if (hash->movm_args & 0x4)
3524 hash->movm_stack_size += 2 * 4;
3528 /* Now look for the two stack adjustment variants. */
3529 if (byte1 == 0xf8 && byte2 == 0xfe)
3531 int temp = bfd_get_8 (abfd, contents + addr + 2);
3532 temp = ((temp & 0xff) ^ (~0x7f)) + 0x80;
3534 hash->stack_size = -temp;
3536 else if (byte1 == 0xfa && byte2 == 0xfe)
3538 int temp = bfd_get_16 (abfd, contents + addr + 2);
3539 temp = ((temp & 0xffff) ^ (~0x7fff)) + 0x8000;
3543 hash->stack_size = temp;
3546 /* If the total stack to be allocated by the call instruction is more
3547 than 255 bytes, then we can't remove the stack adjustment by using
3548 "call" (we might still be able to remove the "movm" instruction. */
3549 if (hash->stack_size + hash->movm_stack_size > 255)
3550 hash->stack_size = 0;
3555 /* Delete some bytes from a section while relaxing. */
3558 mn10300_elf_relax_delete_bytes (abfd, sec, addr, count)
3564 Elf_Internal_Shdr *symtab_hdr;
3565 unsigned int sec_shndx;
3567 Elf_Internal_Rela *irel, *irelend;
3568 Elf_Internal_Rela *irelalign;
3570 Elf_Internal_Sym *isym, *isymend;
3571 struct elf_link_hash_entry **sym_hashes;
3572 struct elf_link_hash_entry **end_hashes;
3573 unsigned int symcount;
3575 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
3577 contents = elf_section_data (sec)->this_hdr.contents;
3579 /* The deletion must stop at the next ALIGN reloc for an aligment
3580 power larger than the number of bytes we are deleting. */
3585 irel = elf_section_data (sec)->relocs;
3586 irelend = irel + sec->reloc_count;
3588 /* Actually delete the bytes. */
3589 memmove (contents + addr, contents + addr + count,
3590 (size_t) (toaddr - addr - count));
3593 /* Adjust all the relocs. */
3594 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
3596 /* Get the new reloc address. */
3597 if ((irel->r_offset > addr
3598 && irel->r_offset < toaddr))
3599 irel->r_offset -= count;
3602 /* Adjust the local symbols defined in this section. */
3603 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3604 isym = (Elf_Internal_Sym *) symtab_hdr->contents;
3605 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
3607 if (isym->st_shndx == sec_shndx
3608 && isym->st_value > addr
3609 && isym->st_value < toaddr)
3610 isym->st_value -= count;
3613 /* Now adjust the global symbols defined in this section. */
3614 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
3615 - symtab_hdr->sh_info);
3616 sym_hashes = elf_sym_hashes (abfd);
3617 end_hashes = sym_hashes + symcount;
3618 for (; sym_hashes < end_hashes; sym_hashes++)
3620 struct elf_link_hash_entry *sym_hash = *sym_hashes;
3621 if ((sym_hash->root.type == bfd_link_hash_defined
3622 || sym_hash->root.type == bfd_link_hash_defweak)
3623 && sym_hash->root.u.def.section == sec
3624 && sym_hash->root.u.def.value > addr
3625 && sym_hash->root.u.def.value < toaddr)
3627 sym_hash->root.u.def.value -= count;
3634 /* Return TRUE if a symbol exists at the given address, else return
3637 mn10300_elf_symbol_address_p (abfd, sec, isym, addr)
3640 Elf_Internal_Sym *isym;
3643 Elf_Internal_Shdr *symtab_hdr;
3644 unsigned int sec_shndx;
3645 Elf_Internal_Sym *isymend;
3646 struct elf_link_hash_entry **sym_hashes;
3647 struct elf_link_hash_entry **end_hashes;
3648 unsigned int symcount;
3650 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
3652 /* Examine all the symbols. */
3653 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3654 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
3656 if (isym->st_shndx == sec_shndx
3657 && isym->st_value == addr)
3661 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
3662 - symtab_hdr->sh_info);
3663 sym_hashes = elf_sym_hashes (abfd);
3664 end_hashes = sym_hashes + symcount;
3665 for (; sym_hashes < end_hashes; sym_hashes++)
3667 struct elf_link_hash_entry *sym_hash = *sym_hashes;
3668 if ((sym_hash->root.type == bfd_link_hash_defined
3669 || sym_hash->root.type == bfd_link_hash_defweak)
3670 && sym_hash->root.u.def.section == sec
3671 && sym_hash->root.u.def.value == addr)
3678 /* This is a version of bfd_generic_get_relocated_section_contents
3679 which uses mn10300_elf_relocate_section. */
3682 mn10300_elf_get_relocated_section_contents (output_bfd, link_info, link_order,
3683 data, relocatable, symbols)
3685 struct bfd_link_info *link_info;
3686 struct bfd_link_order *link_order;
3688 bfd_boolean relocatable;
3691 Elf_Internal_Shdr *symtab_hdr;
3692 asection *input_section = link_order->u.indirect.section;
3693 bfd *input_bfd = input_section->owner;
3694 asection **sections = NULL;
3695 Elf_Internal_Rela *internal_relocs = NULL;
3696 Elf_Internal_Sym *isymbuf = NULL;
3698 /* We only need to handle the case of relaxing, or of having a
3699 particular set of section contents, specially. */
3701 || elf_section_data (input_section)->this_hdr.contents == NULL)
3702 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
3707 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3709 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
3710 (size_t) input_section->size);
3712 if ((input_section->flags & SEC_RELOC) != 0
3713 && input_section->reloc_count > 0)
3716 Elf_Internal_Sym *isym, *isymend;
3719 internal_relocs = (_bfd_elf_link_read_relocs
3720 (input_bfd, input_section, (PTR) NULL,
3721 (Elf_Internal_Rela *) NULL, FALSE));
3722 if (internal_relocs == NULL)
3725 if (symtab_hdr->sh_info != 0)
3727 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
3728 if (isymbuf == NULL)
3729 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
3730 symtab_hdr->sh_info, 0,
3732 if (isymbuf == NULL)
3736 amt = symtab_hdr->sh_info;
3737 amt *= sizeof (asection *);
3738 sections = (asection **) bfd_malloc (amt);
3739 if (sections == NULL && amt != 0)
3742 isymend = isymbuf + symtab_hdr->sh_info;
3743 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
3747 if (isym->st_shndx == SHN_UNDEF)
3748 isec = bfd_und_section_ptr;
3749 else if (isym->st_shndx == SHN_ABS)
3750 isec = bfd_abs_section_ptr;
3751 else if (isym->st_shndx == SHN_COMMON)
3752 isec = bfd_com_section_ptr;
3754 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
3759 if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd,
3760 input_section, data, internal_relocs,
3764 if (sections != NULL)
3766 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
3768 if (internal_relocs != elf_section_data (input_section)->relocs)
3769 free (internal_relocs);
3775 if (sections != NULL)
3777 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
3779 if (internal_relocs != NULL
3780 && internal_relocs != elf_section_data (input_section)->relocs)
3781 free (internal_relocs);
3785 /* Assorted hash table functions. */
3787 /* Initialize an entry in the link hash table. */
3789 /* Create an entry in an MN10300 ELF linker hash table. */
3791 static struct bfd_hash_entry *
3792 elf32_mn10300_link_hash_newfunc (entry, table, string)
3793 struct bfd_hash_entry *entry;
3794 struct bfd_hash_table *table;
3797 struct elf32_mn10300_link_hash_entry *ret =
3798 (struct elf32_mn10300_link_hash_entry *) entry;
3800 /* Allocate the structure if it has not already been allocated by a
3802 if (ret == (struct elf32_mn10300_link_hash_entry *) NULL)
3803 ret = ((struct elf32_mn10300_link_hash_entry *)
3804 bfd_hash_allocate (table,
3805 sizeof (struct elf32_mn10300_link_hash_entry)));
3806 if (ret == (struct elf32_mn10300_link_hash_entry *) NULL)
3807 return (struct bfd_hash_entry *) ret;
3809 /* Call the allocation method of the superclass. */
3810 ret = ((struct elf32_mn10300_link_hash_entry *)
3811 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
3813 if (ret != (struct elf32_mn10300_link_hash_entry *) NULL)
3815 ret->direct_calls = 0;
3816 ret->stack_size = 0;
3818 ret->movm_stack_size = 0;
3819 ret->pcrel_relocs_copied = NULL;
3823 return (struct bfd_hash_entry *) ret;
3826 /* Create an mn10300 ELF linker hash table. */
3828 static struct bfd_link_hash_table *
3829 elf32_mn10300_link_hash_table_create (abfd)
3832 struct elf32_mn10300_link_hash_table *ret;
3833 bfd_size_type amt = sizeof (struct elf32_mn10300_link_hash_table);
3835 ret = (struct elf32_mn10300_link_hash_table *) bfd_malloc (amt);
3836 if (ret == (struct elf32_mn10300_link_hash_table *) NULL)
3839 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
3840 elf32_mn10300_link_hash_newfunc))
3847 amt = sizeof (struct elf_link_hash_table);
3848 ret->static_hash_table
3849 = (struct elf32_mn10300_link_hash_table *) bfd_malloc (amt);
3850 if (ret->static_hash_table == NULL)
3856 if (! _bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd,
3857 elf32_mn10300_link_hash_newfunc))
3859 free (ret->static_hash_table);
3863 return &ret->root.root;
3866 /* Free an mn10300 ELF linker hash table. */
3869 elf32_mn10300_link_hash_table_free (hash)
3870 struct bfd_link_hash_table *hash;
3872 struct elf32_mn10300_link_hash_table *ret
3873 = (struct elf32_mn10300_link_hash_table *) hash;
3875 _bfd_generic_link_hash_table_free
3876 ((struct bfd_link_hash_table *) ret->static_hash_table);
3877 _bfd_generic_link_hash_table_free
3878 ((struct bfd_link_hash_table *) ret);
3881 static unsigned long
3882 elf_mn10300_mach (flags)
3885 switch (flags & EF_MN10300_MACH)
3887 case E_MN10300_MACH_MN10300:
3889 return bfd_mach_mn10300;
3891 case E_MN10300_MACH_AM33:
3892 return bfd_mach_am33;
3894 case E_MN10300_MACH_AM33_2:
3895 return bfd_mach_am33_2;
3899 /* The final processing done just before writing out a MN10300 ELF object
3900 file. This gets the MN10300 architecture right based on the machine
3904 _bfd_mn10300_elf_final_write_processing (abfd, linker)
3906 bfd_boolean linker ATTRIBUTE_UNUSED;
3910 switch (bfd_get_mach (abfd))
3913 case bfd_mach_mn10300:
3914 val = E_MN10300_MACH_MN10300;
3918 val = E_MN10300_MACH_AM33;
3921 case bfd_mach_am33_2:
3922 val = E_MN10300_MACH_AM33_2;
3926 elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH);
3927 elf_elfheader (abfd)->e_flags |= val;
3931 _bfd_mn10300_elf_object_p (abfd)
3934 bfd_default_set_arch_mach (abfd, bfd_arch_mn10300,
3935 elf_mn10300_mach (elf_elfheader (abfd)->e_flags));
3939 /* Merge backend specific data from an object file to the output
3940 object file when linking. */
3943 _bfd_mn10300_elf_merge_private_bfd_data (ibfd, obfd)
3947 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3948 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3951 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3952 && bfd_get_mach (obfd) < bfd_get_mach (ibfd))
3954 if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3955 bfd_get_mach (ibfd)))
3962 #define PLT0_ENTRY_SIZE 15
3963 #define PLT_ENTRY_SIZE 20
3964 #define PIC_PLT_ENTRY_SIZE 24
3966 static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] =
3968 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */
3969 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */
3970 0xf0, 0xf4, /* jmp (a0) */
3973 static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] =
3975 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */
3976 0xf0, 0xf4, /* jmp (a0) */
3977 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
3978 0xdc, 0, 0, 0, 0, /* jmp .plt0 */
3981 static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] =
3983 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */
3984 0xf0, 0xf4, /* jmp (a0) */
3985 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
3986 0xf8, 0x22, 8, /* mov (8,a2),a0 */
3987 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */
3988 0xf0, 0xf4, /* jmp (a0) */
3991 /* Return size of the first PLT entry. */
3992 #define elf_mn10300_sizeof_plt0(info) \
3993 (info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE)
3995 /* Return size of a PLT entry. */
3996 #define elf_mn10300_sizeof_plt(info) \
3997 (info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE)
3999 /* Return offset of the PLT0 address in an absolute PLT entry. */
4000 #define elf_mn10300_plt_plt0_offset(info) 16
4002 /* Return offset of the linker in PLT0 entry. */
4003 #define elf_mn10300_plt0_linker_offset(info) 2
4005 /* Return offset of the GOT id in PLT0 entry. */
4006 #define elf_mn10300_plt0_gotid_offset(info) 9
4008 /* Return offset of the temporary in PLT entry */
4009 #define elf_mn10300_plt_temp_offset(info) 8
4011 /* Return offset of the symbol in PLT entry. */
4012 #define elf_mn10300_plt_symbol_offset(info) 2
4014 /* Return offset of the relocation in PLT entry. */
4015 #define elf_mn10300_plt_reloc_offset(info) 11
4017 /* The name of the dynamic interpreter. This is put in the .interp
4020 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
4022 /* Create dynamic sections when linking against a dynamic object. */
4025 _bfd_mn10300_elf_create_dynamic_sections (abfd, info)
4027 struct bfd_link_info *info;
4031 const struct elf_backend_data * bed = get_elf_backend_data (abfd);
4034 switch (bed->s->arch_size)
4045 bfd_set_error (bfd_error_bad_value);
4049 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
4050 .rel[a].bss sections. */
4052 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4053 | SEC_LINKER_CREATED);
4055 s = bfd_make_section (abfd,
4056 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt");
4058 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
4059 || ! bfd_set_section_alignment (abfd, s, ptralign))
4062 if (! _bfd_mn10300_elf_create_got_section (abfd, info))
4066 const char * secname;
4071 for (sec = abfd->sections; sec; sec = sec->next)
4073 secflags = bfd_get_section_flags (abfd, sec);
4074 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
4075 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
4078 secname = bfd_get_section_name (abfd, sec);
4079 relname = (char *) bfd_malloc (strlen (secname) + 6);
4080 strcpy (relname, ".rela");
4081 strcat (relname, secname);
4083 s = bfd_make_section (abfd, relname);
4085 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
4086 || ! bfd_set_section_alignment (abfd, s, ptralign))
4091 if (bed->want_dynbss)
4093 /* The .dynbss section is a place to put symbols which are defined
4094 by dynamic objects, are referenced by regular objects, and are
4095 not functions. We must allocate space for them in the process
4096 image and use a R_*_COPY reloc to tell the dynamic linker to
4097 initialize them at run time. The linker script puts the .dynbss
4098 section into the .bss section of the final image. */
4099 s = bfd_make_section (abfd, ".dynbss");
4101 || ! bfd_set_section_flags (abfd, s, SEC_ALLOC))
4104 /* The .rel[a].bss section holds copy relocs. This section is not
4105 normally needed. We need to create it here, though, so that the
4106 linker will map it to an output section. We can't just create it
4107 only if we need it, because we will not know whether we need it
4108 until we have seen all the input files, and the first time the
4109 main linker code calls BFD after examining all the input files
4110 (size_dynamic_sections) the input sections have already been
4111 mapped to the output sections. If the section turns out not to
4112 be needed, we can discard it later. We will never need this
4113 section when generating a shared object, since they do not use
4117 s = bfd_make_section (abfd,
4118 (bed->default_use_rela_p
4119 ? ".rela.bss" : ".rel.bss"));
4121 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
4122 || ! bfd_set_section_alignment (abfd, s, ptralign))
4130 /* Adjust a symbol defined by a dynamic object and referenced by a
4131 regular object. The current definition is in some section of the
4132 dynamic object, but we're not including those sections. We have to
4133 change the definition to something the rest of the link can
4137 _bfd_mn10300_elf_adjust_dynamic_symbol (info, h)
4138 struct bfd_link_info * info;
4139 struct elf_link_hash_entry * h;
4143 unsigned int power_of_two;
4145 dynobj = elf_hash_table (info)->dynobj;
4147 /* Make sure we know what is going on here. */
4148 BFD_ASSERT (dynobj != NULL
4149 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
4150 || h->weakdef != NULL
4151 || ((h->elf_link_hash_flags
4152 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
4153 && (h->elf_link_hash_flags
4154 & ELF_LINK_HASH_REF_REGULAR) != 0
4155 && (h->elf_link_hash_flags
4156 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
4158 /* If this is a function, put it in the procedure linkage table. We
4159 will fill in the contents of the procedure linkage table later,
4160 when we know the address of the .got section. */
4161 if (h->type == STT_FUNC
4162 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
4165 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
4166 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0)
4168 /* This case can occur if we saw a PLT reloc in an input
4169 file, but the symbol was never referred to by a dynamic
4170 object. In such a case, we don't actually need to build
4171 a procedure linkage table, and we can just do a REL32
4173 BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0);
4177 /* Make sure this symbol is output as a dynamic symbol. */
4178 if (h->dynindx == -1)
4180 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4184 s = bfd_get_section_by_name (dynobj, ".plt");
4185 BFD_ASSERT (s != NULL);
4187 /* If this is the first .plt entry, make room for the special
4190 s->size += elf_mn10300_sizeof_plt0 (info);
4192 /* If this symbol is not defined in a regular file, and we are
4193 not generating a shared library, then set the symbol to this
4194 location in the .plt. This is required to make function
4195 pointers compare as equal between the normal executable and
4196 the shared library. */
4198 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4200 h->root.u.def.section = s;
4201 h->root.u.def.value = s->size;
4204 h->plt.offset = s->size;
4206 /* Make room for this entry. */
4207 s->size += elf_mn10300_sizeof_plt (info);
4209 /* We also need to make an entry in the .got.plt section, which
4210 will be placed in the .got section by the linker script. */
4212 s = bfd_get_section_by_name (dynobj, ".got.plt");
4213 BFD_ASSERT (s != NULL);
4216 /* We also need to make an entry in the .rela.plt section. */
4218 s = bfd_get_section_by_name (dynobj, ".rela.plt");
4219 BFD_ASSERT (s != NULL);
4220 s->size += sizeof (Elf32_External_Rela);
4225 /* If this is a weak symbol, and there is a real definition, the
4226 processor independent code will have arranged for us to see the
4227 real definition first, and we can just use the same value. */
4228 if (h->weakdef != NULL)
4230 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
4231 || h->weakdef->root.type == bfd_link_hash_defweak);
4232 h->root.u.def.section = h->weakdef->root.u.def.section;
4233 h->root.u.def.value = h->weakdef->root.u.def.value;
4237 /* This is a reference to a symbol defined by a dynamic object which
4238 is not a function. */
4240 /* If we are creating a shared library, we must presume that the
4241 only references to the symbol are via the global offset table.
4242 For such cases we need not do anything here; the relocations will
4243 be handled correctly by relocate_section. */
4247 /* If there are no references to this symbol that do not use the
4248 GOT, we don't need to generate a copy reloc. */
4249 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
4252 /* We must allocate the symbol in our .dynbss section, which will
4253 become part of the .bss section of the executable. There will be
4254 an entry for this symbol in the .dynsym section. The dynamic
4255 object will contain position independent code, so all references
4256 from the dynamic object to this symbol will go through the global
4257 offset table. The dynamic linker will use the .dynsym entry to
4258 determine the address it must put in the global offset table, so
4259 both the dynamic object and the regular object will refer to the
4260 same memory location for the variable. */
4262 s = bfd_get_section_by_name (dynobj, ".dynbss");
4263 BFD_ASSERT (s != NULL);
4265 /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to
4266 copy the initial value out of the dynamic object and into the
4267 runtime process image. We need to remember the offset into the
4268 .rela.bss section we are going to use. */
4269 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4273 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
4274 BFD_ASSERT (srel != NULL);
4275 srel->size += sizeof (Elf32_External_Rela);
4276 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
4279 /* We need to figure out the alignment required for this symbol. I
4280 have no idea how ELF linkers handle this. */
4281 power_of_two = bfd_log2 (h->size);
4282 if (power_of_two > 3)
4285 /* Apply the required alignment. */
4286 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
4287 if (power_of_two > bfd_get_section_alignment (dynobj, s))
4289 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
4293 /* Define the symbol as being at this point in the section. */
4294 h->root.u.def.section = s;
4295 h->root.u.def.value = s->size;
4297 /* Increment the section size to make room for the symbol. */
4303 /* This function is called via elf32_mn10300_link_hash_traverse if we are
4304 creating a shared object with -Bsymbolic. It discards the space
4305 allocated to copy PC relative relocs against symbols which are
4306 defined in regular objects. We allocated space for them in the
4307 check_relocs routine, but we won't fill them in in the
4308 relocate_section routine. */
4311 _bfd_mn10300_elf_discard_copies (h, info)
4312 struct elf32_mn10300_link_hash_entry *h;
4313 struct bfd_link_info *info;
4315 struct elf_mn10300_pcrel_relocs_copied *s;
4317 /* If a symbol has been forced local or we have found a regular
4318 definition for the symbolic link case, then we won't be needing
4320 if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
4321 && ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
4324 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
4325 s->section->size -= s->count * sizeof (Elf32_External_Rel);
4331 /* Set the sizes of the dynamic sections. */
4334 _bfd_mn10300_elf_size_dynamic_sections (output_bfd, info)
4336 struct bfd_link_info * info;
4342 bfd_boolean reltext;
4344 dynobj = elf_hash_table (info)->dynobj;
4345 BFD_ASSERT (dynobj != NULL);
4347 if (elf_hash_table (info)->dynamic_sections_created)
4349 /* Set the contents of the .interp section to the interpreter. */
4350 if (info->executable)
4352 s = bfd_get_section_by_name (dynobj, ".interp");
4353 BFD_ASSERT (s != NULL);
4354 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
4355 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4360 /* We may have created entries in the .rela.got section.
4361 However, if we are not creating the dynamic sections, we will
4362 not actually use these entries. Reset the size of .rela.got,
4363 which will cause it to get stripped from the output file
4365 s = bfd_get_section_by_name (dynobj, ".rela.got");
4370 /* If this is a -Bsymbolic shared link, then we need to discard all
4371 PC relative relocs against symbols defined in a regular object.
4372 We allocated space for them in the check_relocs routine, but we
4373 will not fill them in in the relocate_section routine. */
4374 if (info->shared && info->symbolic)
4375 elf32_mn10300_link_hash_traverse (elf32_mn10300_hash_table (info),
4376 _bfd_mn10300_elf_discard_copies,
4379 /* The check_relocs and adjust_dynamic_symbol entry points have
4380 determined the sizes of the various dynamic sections. Allocate
4385 for (s = dynobj->sections; s != NULL; s = s->next)
4390 if ((s->flags & SEC_LINKER_CREATED) == 0)
4393 /* It's OK to base decisions on the section name, because none
4394 of the dynobj section names depend upon the input files. */
4395 name = bfd_get_section_name (dynobj, s);
4399 if (strcmp (name, ".plt") == 0)
4402 /* Strip this section if we don't need it; see the
4406 /* Remember whether there is a PLT. */
4409 else if (strncmp (name, ".rela", 5) == 0)
4413 /* If we don't need this section, strip it from the
4414 output file. This is mostly to handle .rela.bss and
4415 .rela.plt. We must create both sections in
4416 create_dynamic_sections, because they must be created
4417 before the linker maps input sections to output
4418 sections. The linker does that before
4419 adjust_dynamic_symbol is called, and it is that
4420 function which decides whether anything needs to go
4421 into these sections. */
4428 /* Remember whether there are any reloc sections other
4430 if (strcmp (name, ".rela.plt") != 0)
4432 const char * outname;
4436 /* If this relocation section applies to a read only
4437 section, then we probably need a DT_TEXTREL
4438 entry. The entries in the .rela.plt section
4439 really apply to the .got section, which we
4440 created ourselves and so know is not readonly. */
4441 outname = bfd_get_section_name (output_bfd,
4443 target = bfd_get_section_by_name (output_bfd, outname + 5);
4445 && (target->flags & SEC_READONLY) != 0
4446 && (target->flags & SEC_ALLOC) != 0)
4450 /* We use the reloc_count field as a counter if we need
4451 to copy relocs into the output file. */
4455 else if (strncmp (name, ".got", 4) != 0)
4456 /* It's not one of our sections, so don't allocate space. */
4461 _bfd_strip_section_from_output (info, s);
4465 /* Allocate memory for the section contents. We use bfd_zalloc
4466 here in case unused entries are not reclaimed before the
4467 section's contents are written out. This should not happen,
4468 but this way if it does, we get a R_MN10300_NONE reloc
4469 instead of garbage. */
4470 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
4471 if (s->contents == NULL && s->size != 0)
4475 if (elf_hash_table (info)->dynamic_sections_created)
4477 /* Add some entries to the .dynamic section. We fill in the
4478 values later, in _bfd_mn10300_elf_finish_dynamic_sections,
4479 but we must add the entries now so that we get the correct
4480 size for the .dynamic section. The DT_DEBUG entry is filled
4481 in by the dynamic linker and used by the debugger. */
4484 if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0))
4490 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)
4491 || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0)
4492 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
4493 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0))
4499 if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0)
4500 || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0)
4501 || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT,
4502 sizeof (Elf32_External_Rela)))
4508 if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0))
4516 /* Finish up dynamic symbol handling. We set the contents of various
4517 dynamic sections here. */
4520 _bfd_mn10300_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
4522 struct bfd_link_info * info;
4523 struct elf_link_hash_entry * h;
4524 Elf_Internal_Sym * sym;
4528 dynobj = elf_hash_table (info)->dynobj;
4530 if (h->plt.offset != (bfd_vma) -1)
4537 Elf_Internal_Rela rel;
4539 /* This symbol has an entry in the procedure linkage table. Set
4542 BFD_ASSERT (h->dynindx != -1);
4544 splt = bfd_get_section_by_name (dynobj, ".plt");
4545 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
4546 srel = bfd_get_section_by_name (dynobj, ".rela.plt");
4547 BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
4549 /* Get the index in the procedure linkage table which
4550 corresponds to this symbol. This is the index of this symbol
4551 in all the symbols for which we are making plt entries. The
4552 first entry in the procedure linkage table is reserved. */
4553 plt_index = ((h->plt.offset - elf_mn10300_sizeof_plt0 (info))
4554 / elf_mn10300_sizeof_plt (info));
4556 /* Get the offset into the .got table of the entry that
4557 corresponds to this function. Each .got entry is 4 bytes.
4558 The first three are reserved. */
4559 got_offset = (plt_index + 3) * 4;
4561 /* Fill in the entry in the procedure linkage table. */
4564 memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry,
4565 elf_mn10300_sizeof_plt (info));
4566 bfd_put_32 (output_bfd,
4567 (sgot->output_section->vma
4568 + sgot->output_offset
4570 (splt->contents + h->plt.offset
4571 + elf_mn10300_plt_symbol_offset (info)));
4573 bfd_put_32 (output_bfd,
4574 (1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)),
4575 (splt->contents + h->plt.offset
4576 + elf_mn10300_plt_plt0_offset (info)));
4580 memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry,
4581 elf_mn10300_sizeof_plt (info));
4583 bfd_put_32 (output_bfd, got_offset,
4584 (splt->contents + h->plt.offset
4585 + elf_mn10300_plt_symbol_offset (info)));
4588 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
4589 (splt->contents + h->plt.offset
4590 + elf_mn10300_plt_reloc_offset (info)));
4592 /* Fill in the entry in the global offset table. */
4593 bfd_put_32 (output_bfd,
4594 (splt->output_section->vma
4595 + splt->output_offset
4597 + elf_mn10300_plt_temp_offset (info)),
4598 sgot->contents + got_offset);
4600 /* Fill in the entry in the .rela.plt section. */
4601 rel.r_offset = (sgot->output_section->vma
4602 + sgot->output_offset
4604 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT);
4606 bfd_elf32_swap_reloca_out (output_bfd, &rel,
4607 (bfd_byte *) ((Elf32_External_Rela *) srel->contents
4610 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4611 /* Mark the symbol as undefined, rather than as defined in
4612 the .plt section. Leave the value alone. */
4613 sym->st_shndx = SHN_UNDEF;
4616 if (h->got.offset != (bfd_vma) -1)
4620 Elf_Internal_Rela rel;
4622 /* This symbol has an entry in the global offset table. Set it up. */
4624 sgot = bfd_get_section_by_name (dynobj, ".got");
4625 srel = bfd_get_section_by_name (dynobj, ".rela.got");
4626 BFD_ASSERT (sgot != NULL && srel != NULL);
4628 rel.r_offset = (sgot->output_section->vma
4629 + sgot->output_offset
4630 + (h->got.offset &~ 1));
4632 /* If this is a -Bsymbolic link, and the symbol is defined
4633 locally, we just want to emit a RELATIVE reloc. Likewise if
4634 the symbol was forced to be local because of a version file.
4635 The entry in the global offset table will already have been
4636 initialized in the relocate_section function. */
4638 && (info->symbolic || h->dynindx == -1)
4639 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
4641 rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
4642 rel.r_addend = (h->root.u.def.value
4643 + h->root.u.def.section->output_section->vma
4644 + h->root.u.def.section->output_offset);
4648 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
4649 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT);
4653 bfd_elf32_swap_reloca_out (output_bfd, &rel,
4654 (bfd_byte *) ((Elf32_External_Rela *) srel->contents
4655 + srel->reloc_count));
4656 ++ srel->reloc_count;
4659 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
4662 Elf_Internal_Rela rel;
4664 /* This symbol needs a copy reloc. Set it up. */
4665 BFD_ASSERT (h->dynindx != -1
4666 && (h->root.type == bfd_link_hash_defined
4667 || h->root.type == bfd_link_hash_defweak));
4669 s = bfd_get_section_by_name (h->root.u.def.section->owner,
4671 BFD_ASSERT (s != NULL);
4673 rel.r_offset = (h->root.u.def.value
4674 + h->root.u.def.section->output_section->vma
4675 + h->root.u.def.section->output_offset);
4676 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY);
4678 bfd_elf32_swap_reloca_out (output_bfd, &rel,
4679 (bfd_byte *) ((Elf32_External_Rela *) s->contents
4684 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4685 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
4686 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4687 sym->st_shndx = SHN_ABS;
4692 /* Finish up the dynamic sections. */
4695 _bfd_mn10300_elf_finish_dynamic_sections (output_bfd, info)
4697 struct bfd_link_info * info;
4703 dynobj = elf_hash_table (info)->dynobj;
4705 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
4706 BFD_ASSERT (sgot != NULL);
4707 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4709 if (elf_hash_table (info)->dynamic_sections_created)
4712 Elf32_External_Dyn * dyncon;
4713 Elf32_External_Dyn * dynconend;
4715 BFD_ASSERT (sdyn != NULL);
4717 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4718 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4720 for (; dyncon < dynconend; dyncon++)
4722 Elf_Internal_Dyn dyn;
4726 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4740 s = bfd_get_section_by_name (output_bfd, name);
4741 BFD_ASSERT (s != NULL);
4742 dyn.d_un.d_ptr = s->vma;
4743 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4747 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
4748 BFD_ASSERT (s != NULL);
4749 dyn.d_un.d_val = s->size;
4750 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4754 /* My reading of the SVR4 ABI indicates that the
4755 procedure linkage table relocs (DT_JMPREL) should be
4756 included in the overall relocs (DT_RELA). This is
4757 what Solaris does. However, UnixWare can not handle
4758 that case. Therefore, we override the DT_RELASZ entry
4759 here to make it not include the JMPREL relocs. Since
4760 the linker script arranges for .rela.plt to follow all
4761 other relocation sections, we don't have to worry
4762 about changing the DT_RELA entry. */
4763 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
4765 dyn.d_un.d_val -= s->size;
4766 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4771 /* Fill in the first entry in the procedure linkage table. */
4772 splt = bfd_get_section_by_name (dynobj, ".plt");
4773 if (splt && splt->size > 0)
4777 memcpy (splt->contents, elf_mn10300_pic_plt_entry,
4778 elf_mn10300_sizeof_plt (info));
4782 memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE);
4783 bfd_put_32 (output_bfd,
4784 sgot->output_section->vma + sgot->output_offset + 4,
4785 splt->contents + elf_mn10300_plt0_gotid_offset (info));
4786 bfd_put_32 (output_bfd,
4787 sgot->output_section->vma + sgot->output_offset + 8,
4788 splt->contents + elf_mn10300_plt0_linker_offset (info));
4791 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4792 really seem like the right value. */
4793 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
4797 /* Fill in the first three entries in the global offset table. */
4801 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
4803 bfd_put_32 (output_bfd,
4804 sdyn->output_section->vma + sdyn->output_offset,
4806 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
4807 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
4810 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
4815 /* Classify relocation types, such that combreloc can sort them
4818 static enum elf_reloc_type_class
4819 _bfd_mn10300_elf_reloc_type_class (const Elf_Internal_Rela *rela)
4821 switch ((int) ELF32_R_TYPE (rela->r_info))
4823 case R_MN10300_RELATIVE:
4824 return reloc_class_relative;
4825 case R_MN10300_JMP_SLOT:
4826 return reloc_class_plt;
4827 case R_MN10300_COPY:
4828 return reloc_class_copy;
4830 return reloc_class_normal;
4835 #define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec
4836 #define TARGET_LITTLE_NAME "elf32-mn10300"
4837 #define ELF_ARCH bfd_arch_mn10300
4838 #define ELF_MACHINE_CODE EM_MN10300
4839 #define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300
4840 #define ELF_MAXPAGESIZE 0x1000
4843 #define elf_info_to_howto mn10300_info_to_howto
4844 #define elf_info_to_howto_rel 0
4845 #define elf_backend_can_gc_sections 1
4846 #define elf_backend_rela_normal 1
4847 #define elf_backend_check_relocs mn10300_elf_check_relocs
4848 #define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook
4849 #define elf_backend_relocate_section mn10300_elf_relocate_section
4850 #define bfd_elf32_bfd_relax_section mn10300_elf_relax_section
4851 #define bfd_elf32_bfd_get_relocated_section_contents \
4852 mn10300_elf_get_relocated_section_contents
4853 #define bfd_elf32_bfd_link_hash_table_create \
4854 elf32_mn10300_link_hash_table_create
4855 #define bfd_elf32_bfd_link_hash_table_free \
4856 elf32_mn10300_link_hash_table_free
4858 #ifndef elf_symbol_leading_char
4859 #define elf_symbol_leading_char '_'
4862 /* So we can set bits in e_flags. */
4863 #define elf_backend_final_write_processing \
4864 _bfd_mn10300_elf_final_write_processing
4865 #define elf_backend_object_p _bfd_mn10300_elf_object_p
4867 #define bfd_elf32_bfd_merge_private_bfd_data \
4868 _bfd_mn10300_elf_merge_private_bfd_data
4870 #define elf_backend_can_gc_sections 1
4871 #define elf_backend_create_dynamic_sections \
4872 _bfd_mn10300_elf_create_dynamic_sections
4873 #define elf_backend_adjust_dynamic_symbol \
4874 _bfd_mn10300_elf_adjust_dynamic_symbol
4875 #define elf_backend_size_dynamic_sections \
4876 _bfd_mn10300_elf_size_dynamic_sections
4877 #define elf_backend_finish_dynamic_symbol \
4878 _bfd_mn10300_elf_finish_dynamic_symbol
4879 #define elf_backend_finish_dynamic_sections \
4880 _bfd_mn10300_elf_finish_dynamic_sections
4882 #define elf_backend_reloc_type_class \
4883 _bfd_mn10300_elf_reloc_type_class
4885 #define elf_backend_want_got_plt 1
4886 #define elf_backend_plt_readonly 1
4887 #define elf_backend_want_plt_sym 0
4888 #define elf_backend_got_header_size 12
4890 #include "elf32-target.h"