1 /* Matsushita 10300 specific support for 32-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
3 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
25 #include "elf/mn10300.h"
27 static bfd_reloc_status_type mn10300_elf_final_link_relocate
28 PARAMS ((reloc_howto_type *, bfd *, bfd *, asection *, bfd_byte *,
29 bfd_vma, bfd_vma, bfd_vma,
30 struct elf_link_hash_entry *, unsigned long, struct bfd_link_info *,
32 static bfd_boolean mn10300_elf_relocate_section
33 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
34 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
35 static bfd_boolean mn10300_elf_relax_section
36 PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *));
37 static bfd_byte * mn10300_elf_get_relocated_section_contents
38 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
39 bfd_byte *, bfd_boolean, asymbol **));
40 static unsigned long elf_mn10300_mach
42 void _bfd_mn10300_elf_final_write_processing
43 PARAMS ((bfd *, bfd_boolean));
44 bfd_boolean _bfd_mn10300_elf_object_p
46 bfd_boolean _bfd_mn10300_elf_merge_private_bfd_data
47 PARAMS ((bfd *,bfd *));
49 /* The mn10300 linker needs to keep track of the number of relocs that
50 it decides to copy in check_relocs for each symbol. This is so
51 that it can discard PC relative relocs if it doesn't need them when
52 linking with -Bsymbolic. We store the information in a field
53 extending the regular ELF linker hash table. */
55 /* This structure keeps track of the number of PC relative relocs we
56 have copied for a given symbol. */
58 struct elf_mn10300_pcrel_relocs_copied
61 struct elf_mn10300_pcrel_relocs_copied * next;
62 /* A section in dynobj. */
64 /* Number of relocs copied in this section. */
68 struct elf32_mn10300_link_hash_entry {
69 /* The basic elf link hash table entry. */
70 struct elf_link_hash_entry root;
72 /* For function symbols, the number of times this function is
73 called directly (ie by name). */
74 unsigned int direct_calls;
76 /* For function symbols, the size of this function's stack
77 (if <= 255 bytes). We stuff this into "call" instructions
78 to this target when it's valid and profitable to do so.
80 This does not include stack allocated by movm! */
81 unsigned char stack_size;
83 /* For function symbols, arguments (if any) for movm instruction
84 in the prologue. We stuff this value into "call" instructions
85 to the target when it's valid and profitable to do so. */
86 unsigned char movm_args;
88 /* For function symbols, the amount of stack space that would be allocated
89 by the movm instruction. This is redundant with movm_args, but we
90 add it to the hash table to avoid computing it over and over. */
91 unsigned char movm_stack_size;
93 /* Number of PC relative relocs copied for this symbol. */
94 struct elf_mn10300_pcrel_relocs_copied * pcrel_relocs_copied;
96 /* When set, convert all "call" instructions to this target into "calls"
98 #define MN10300_CONVERT_CALL_TO_CALLS 0x1
100 /* Used to mark functions which have had redundant parts of their
102 #define MN10300_DELETED_PROLOGUE_BYTES 0x2
106 /* We derive a hash table from the main elf linker hash table so
107 we can store state variables and a secondary hash table without
108 resorting to global variables. */
109 struct elf32_mn10300_link_hash_table {
110 /* The main hash table. */
111 struct elf_link_hash_table root;
113 /* A hash table for static functions. We could derive a new hash table
114 instead of using the full elf32_mn10300_link_hash_table if we wanted
115 to save some memory. */
116 struct elf32_mn10300_link_hash_table *static_hash_table;
118 /* Random linker state flags. */
119 #define MN10300_HASH_ENTRIES_INITIALIZED 0x1
123 /* For MN10300 linker hash table. */
125 /* Get the MN10300 ELF linker hash table from a link_info structure. */
127 #define elf32_mn10300_hash_table(p) \
128 ((struct elf32_mn10300_link_hash_table *) ((p)->hash))
130 #define elf32_mn10300_link_hash_traverse(table, func, info) \
131 (elf_link_hash_traverse \
133 (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
136 static struct bfd_hash_entry *elf32_mn10300_link_hash_newfunc
137 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
138 static struct bfd_link_hash_table *elf32_mn10300_link_hash_table_create
140 static void elf32_mn10300_link_hash_table_free
141 PARAMS ((struct bfd_link_hash_table *));
143 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
144 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
145 static void mn10300_info_to_howto
146 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
147 static bfd_boolean mn10300_elf_check_relocs
148 PARAMS ((bfd *, struct bfd_link_info *, asection *,
149 const Elf_Internal_Rela *));
150 static asection *mn10300_elf_gc_mark_hook
151 PARAMS ((asection *, struct bfd_link_info *info, Elf_Internal_Rela *,
152 struct elf_link_hash_entry *, Elf_Internal_Sym *));
153 static bfd_boolean mn10300_elf_relax_delete_bytes
154 PARAMS ((bfd *, asection *, bfd_vma, int));
155 static bfd_boolean mn10300_elf_symbol_address_p
156 PARAMS ((bfd *, asection *, Elf_Internal_Sym *, bfd_vma));
157 static bfd_boolean elf32_mn10300_finish_hash_table_entry
158 PARAMS ((struct bfd_hash_entry *, PTR));
159 static void compute_function_info
160 PARAMS ((bfd *, struct elf32_mn10300_link_hash_entry *,
161 bfd_vma, unsigned char *));
163 static bfd_boolean _bfd_mn10300_elf_create_got_section
164 PARAMS ((bfd *, struct bfd_link_info *));
165 static bfd_boolean _bfd_mn10300_elf_create_dynamic_sections
166 PARAMS ((bfd *, struct bfd_link_info *));
167 static bfd_boolean _bfd_mn10300_elf_adjust_dynamic_symbol
168 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
169 static bfd_boolean _bfd_mn10300_elf_discard_copies
170 PARAMS ((struct elf32_mn10300_link_hash_entry *,
171 struct bfd_link_info *));
172 static bfd_boolean _bfd_mn10300_elf_size_dynamic_sections
173 PARAMS ((bfd *, struct bfd_link_info *));
174 static bfd_boolean _bfd_mn10300_elf_finish_dynamic_symbol
175 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
176 Elf_Internal_Sym *));
177 static bfd_boolean _bfd_mn10300_elf_finish_dynamic_sections
178 PARAMS ((bfd *, struct bfd_link_info *));
180 static reloc_howto_type elf_mn10300_howto_table[] = {
181 /* Dummy relocation. Does nothing. */
182 HOWTO (R_MN10300_NONE,
188 complain_overflow_bitfield,
189 bfd_elf_generic_reloc,
195 /* Standard 32 bit reloc. */
202 complain_overflow_bitfield,
203 bfd_elf_generic_reloc,
209 /* Standard 16 bit reloc. */
216 complain_overflow_bitfield,
217 bfd_elf_generic_reloc,
223 /* Standard 8 bit reloc. */
230 complain_overflow_bitfield,
231 bfd_elf_generic_reloc,
237 /* Standard 32bit pc-relative reloc. */
238 HOWTO (R_MN10300_PCREL32,
244 complain_overflow_bitfield,
245 bfd_elf_generic_reloc,
251 /* Standard 16bit pc-relative reloc. */
252 HOWTO (R_MN10300_PCREL16,
258 complain_overflow_bitfield,
259 bfd_elf_generic_reloc,
265 /* Standard 8 pc-relative reloc. */
266 HOWTO (R_MN10300_PCREL8,
272 complain_overflow_bitfield,
273 bfd_elf_generic_reloc,
280 /* GNU extension to record C++ vtable hierarchy */
281 HOWTO (R_MN10300_GNU_VTINHERIT, /* type */
283 0, /* size (0 = byte, 1 = short, 2 = long) */
285 FALSE, /* pc_relative */
287 complain_overflow_dont, /* complain_on_overflow */
288 NULL, /* special_function */
289 "R_MN10300_GNU_VTINHERIT", /* name */
290 FALSE, /* partial_inplace */
293 FALSE), /* pcrel_offset */
295 /* GNU extension to record C++ vtable member usage */
296 HOWTO (R_MN10300_GNU_VTENTRY, /* type */
298 0, /* size (0 = byte, 1 = short, 2 = long) */
300 FALSE, /* pc_relative */
302 complain_overflow_dont, /* complain_on_overflow */
303 NULL, /* special_function */
304 "R_MN10300_GNU_VTENTRY", /* name */
305 FALSE, /* partial_inplace */
308 FALSE), /* pcrel_offset */
310 /* Standard 24 bit reloc. */
317 complain_overflow_bitfield,
318 bfd_elf_generic_reloc,
324 HOWTO (R_MN10300_GOTPC32, /* type */
326 2, /* size (0 = byte, 1 = short, 2 = long) */
328 TRUE, /* pc_relative */
330 complain_overflow_bitfield, /* complain_on_overflow */
331 bfd_elf_generic_reloc, /* */
332 "R_MN10300_GOTPC32", /* name */
333 FALSE, /* partial_inplace */
334 0xffffffff, /* src_mask */
335 0xffffffff, /* dst_mask */
336 TRUE), /* pcrel_offset */
338 HOWTO (R_MN10300_GOTPC16, /* type */
340 1, /* size (0 = byte, 1 = short, 2 = long) */
342 TRUE, /* pc_relative */
344 complain_overflow_bitfield, /* complain_on_overflow */
345 bfd_elf_generic_reloc, /* */
346 "R_MN10300_GOTPC16", /* name */
347 FALSE, /* partial_inplace */
348 0xffff, /* src_mask */
349 0xffff, /* dst_mask */
350 TRUE), /* pcrel_offset */
352 HOWTO (R_MN10300_GOTOFF32, /* type */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
356 FALSE, /* pc_relative */
358 complain_overflow_bitfield, /* complain_on_overflow */
359 bfd_elf_generic_reloc, /* */
360 "R_MN10300_GOTOFF32", /* name */
361 FALSE, /* partial_inplace */
362 0xffffffff, /* src_mask */
363 0xffffffff, /* dst_mask */
364 FALSE), /* pcrel_offset */
366 HOWTO (R_MN10300_GOTOFF24, /* type */
368 2, /* size (0 = byte, 1 = short, 2 = long) */
370 FALSE, /* pc_relative */
372 complain_overflow_bitfield, /* complain_on_overflow */
373 bfd_elf_generic_reloc, /* */
374 "R_MN10300_GOTOFF24", /* name */
375 FALSE, /* partial_inplace */
376 0xffffff, /* src_mask */
377 0xffffff, /* dst_mask */
378 FALSE), /* pcrel_offset */
380 HOWTO (R_MN10300_GOTOFF16, /* type */
382 1, /* size (0 = byte, 1 = short, 2 = long) */
384 FALSE, /* pc_relative */
386 complain_overflow_bitfield, /* complain_on_overflow */
387 bfd_elf_generic_reloc, /* */
388 "R_MN10300_GOTOFF16", /* name */
389 FALSE, /* partial_inplace */
390 0xffff, /* src_mask */
391 0xffff, /* dst_mask */
392 FALSE), /* pcrel_offset */
394 HOWTO (R_MN10300_PLT32, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 TRUE, /* pc_relative */
400 complain_overflow_bitfield, /* complain_on_overflow */
401 bfd_elf_generic_reloc, /* */
402 "R_MN10300_PLT32", /* name */
403 FALSE, /* partial_inplace */
404 0xffffffff, /* src_mask */
405 0xffffffff, /* dst_mask */
406 TRUE), /* pcrel_offset */
408 HOWTO (R_MN10300_PLT16, /* type */
410 1, /* size (0 = byte, 1 = short, 2 = long) */
412 TRUE, /* pc_relative */
414 complain_overflow_bitfield, /* complain_on_overflow */
415 bfd_elf_generic_reloc, /* */
416 "R_MN10300_PLT16", /* name */
417 FALSE, /* partial_inplace */
418 0xffff, /* src_mask */
419 0xffff, /* dst_mask */
420 TRUE), /* pcrel_offset */
422 HOWTO (R_MN10300_GOT32, /* type */
424 2, /* size (0 = byte, 1 = short, 2 = long) */
426 FALSE, /* pc_relative */
428 complain_overflow_bitfield, /* complain_on_overflow */
429 bfd_elf_generic_reloc, /* */
430 "R_MN10300_GOT32", /* name */
431 FALSE, /* partial_inplace */
432 0xffffffff, /* src_mask */
433 0xffffffff, /* dst_mask */
434 FALSE), /* pcrel_offset */
436 HOWTO (R_MN10300_GOT24, /* type */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
440 FALSE, /* pc_relative */
442 complain_overflow_bitfield, /* complain_on_overflow */
443 bfd_elf_generic_reloc, /* */
444 "R_MN10300_GOT24", /* name */
445 FALSE, /* partial_inplace */
446 0xffffffff, /* src_mask */
447 0xffffffff, /* dst_mask */
448 FALSE), /* pcrel_offset */
450 HOWTO (R_MN10300_GOT16, /* type */
452 1, /* size (0 = byte, 1 = short, 2 = long) */
454 FALSE, /* pc_relative */
456 complain_overflow_bitfield, /* complain_on_overflow */
457 bfd_elf_generic_reloc, /* */
458 "R_MN10300_GOT16", /* name */
459 FALSE, /* partial_inplace */
460 0xffffffff, /* src_mask */
461 0xffffffff, /* dst_mask */
462 FALSE), /* pcrel_offset */
464 HOWTO (R_MN10300_COPY, /* type */
466 2, /* size (0 = byte, 1 = short, 2 = long) */
468 FALSE, /* pc_relative */
470 complain_overflow_bitfield, /* complain_on_overflow */
471 bfd_elf_generic_reloc, /* */
472 "R_MN10300_COPY", /* name */
473 FALSE, /* partial_inplace */
474 0xffffffff, /* src_mask */
475 0xffffffff, /* dst_mask */
476 FALSE), /* pcrel_offset */
478 HOWTO (R_MN10300_GLOB_DAT, /* type */
480 2, /* size (0 = byte, 1 = short, 2 = long) */
482 FALSE, /* pc_relative */
484 complain_overflow_bitfield, /* complain_on_overflow */
485 bfd_elf_generic_reloc, /* */
486 "R_MN10300_GLOB_DAT", /* name */
487 FALSE, /* partial_inplace */
488 0xffffffff, /* src_mask */
489 0xffffffff, /* dst_mask */
490 FALSE), /* pcrel_offset */
492 HOWTO (R_MN10300_JMP_SLOT, /* type */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
496 FALSE, /* pc_relative */
498 complain_overflow_bitfield, /* complain_on_overflow */
499 bfd_elf_generic_reloc, /* */
500 "R_MN10300_JMP_SLOT", /* name */
501 FALSE, /* partial_inplace */
502 0xffffffff, /* src_mask */
503 0xffffffff, /* dst_mask */
504 FALSE), /* pcrel_offset */
506 HOWTO (R_MN10300_RELATIVE, /* type */
508 2, /* size (0 = byte, 1 = short, 2 = long) */
510 FALSE, /* pc_relative */
512 complain_overflow_bitfield, /* complain_on_overflow */
513 bfd_elf_generic_reloc, /* */
514 "R_MN10300_RELATIVE", /* name */
515 FALSE, /* partial_inplace */
516 0xffffffff, /* src_mask */
517 0xffffffff, /* dst_mask */
518 FALSE), /* pcrel_offset */
522 struct mn10300_reloc_map {
523 bfd_reloc_code_real_type bfd_reloc_val;
524 unsigned char elf_reloc_val;
527 static const struct mn10300_reloc_map mn10300_reloc_map[] = {
528 { BFD_RELOC_NONE, R_MN10300_NONE, },
529 { BFD_RELOC_32, R_MN10300_32, },
530 { BFD_RELOC_16, R_MN10300_16, },
531 { BFD_RELOC_8, R_MN10300_8, },
532 { BFD_RELOC_32_PCREL, R_MN10300_PCREL32, },
533 { BFD_RELOC_16_PCREL, R_MN10300_PCREL16, },
534 { BFD_RELOC_8_PCREL, R_MN10300_PCREL8, },
535 { BFD_RELOC_24, R_MN10300_24, },
536 { BFD_RELOC_VTABLE_INHERIT, R_MN10300_GNU_VTINHERIT },
537 { BFD_RELOC_VTABLE_ENTRY, R_MN10300_GNU_VTENTRY },
538 { BFD_RELOC_32_GOT_PCREL, R_MN10300_GOTPC32 },
539 { BFD_RELOC_16_GOT_PCREL, R_MN10300_GOTPC16 },
540 { BFD_RELOC_32_GOTOFF, R_MN10300_GOTOFF32 },
541 { BFD_RELOC_MN10300_GOTOFF24, R_MN10300_GOTOFF24 },
542 { BFD_RELOC_16_GOTOFF, R_MN10300_GOTOFF16 },
543 { BFD_RELOC_32_PLT_PCREL, R_MN10300_PLT32 },
544 { BFD_RELOC_16_PLT_PCREL, R_MN10300_PLT16 },
545 { BFD_RELOC_MN10300_GOT32, R_MN10300_GOT32 },
546 { BFD_RELOC_MN10300_GOT24, R_MN10300_GOT24 },
547 { BFD_RELOC_MN10300_GOT16, R_MN10300_GOT16 },
548 { BFD_RELOC_MN10300_COPY, R_MN10300_COPY },
549 { BFD_RELOC_MN10300_GLOB_DAT, R_MN10300_GLOB_DAT },
550 { BFD_RELOC_MN10300_JMP_SLOT, R_MN10300_JMP_SLOT },
551 { BFD_RELOC_MN10300_RELATIVE, R_MN10300_RELATIVE },
554 /* Create the GOT section. */
557 _bfd_mn10300_elf_create_got_section (abfd, info)
559 struct bfd_link_info * info;
564 struct bfd_link_hash_entry * bh;
565 struct elf_link_hash_entry * h;
566 const struct elf_backend_data * bed = get_elf_backend_data (abfd);
569 /* This function may be called more than once. */
570 if (bfd_get_section_by_name (abfd, ".got") != NULL)
573 switch (bed->s->arch_size)
584 bfd_set_error (bfd_error_bad_value);
588 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
589 | SEC_LINKER_CREATED);
592 pltflags |= SEC_CODE;
593 if (bed->plt_not_loaded)
594 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
595 if (bed->plt_readonly)
596 pltflags |= SEC_READONLY;
598 s = bfd_make_section (abfd, ".plt");
600 || ! bfd_set_section_flags (abfd, s, pltflags)
601 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
604 if (bed->want_plt_sym)
606 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
609 if (! (_bfd_generic_link_add_one_symbol
610 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
611 (bfd_vma) 0, (const char *) NULL, FALSE,
612 get_elf_backend_data (abfd)->collect, &bh)))
614 h = (struct elf_link_hash_entry *) bh;
615 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
616 h->type = STT_OBJECT;
619 && ! bfd_elf_link_record_dynamic_symbol (info, h))
623 s = bfd_make_section (abfd, ".got");
625 || ! bfd_set_section_flags (abfd, s, flags)
626 || ! bfd_set_section_alignment (abfd, s, ptralign))
629 if (bed->want_got_plt)
631 s = bfd_make_section (abfd, ".got.plt");
633 || ! bfd_set_section_flags (abfd, s, flags)
634 || ! bfd_set_section_alignment (abfd, s, ptralign))
638 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
639 (or .got.plt) section. We don't do this in the linker script
640 because we don't want to define the symbol if we are not creating
641 a global offset table. */
643 if (!(_bfd_generic_link_add_one_symbol
644 (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s,
645 bed->got_symbol_offset, (const char *) NULL, FALSE,
648 h = (struct elf_link_hash_entry *) bh;
649 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
650 h->type = STT_OBJECT;
653 && ! bfd_elf_link_record_dynamic_symbol (info, h))
656 elf_hash_table (info)->hgot = h;
658 /* The first bit of the global offset table is the header. */
659 s->_raw_size += bed->got_header_size + bed->got_symbol_offset;
664 static reloc_howto_type *
665 bfd_elf32_bfd_reloc_type_lookup (abfd, code)
666 bfd *abfd ATTRIBUTE_UNUSED;
667 bfd_reloc_code_real_type code;
672 i < sizeof (mn10300_reloc_map) / sizeof (struct mn10300_reloc_map);
675 if (mn10300_reloc_map[i].bfd_reloc_val == code)
676 return &elf_mn10300_howto_table[mn10300_reloc_map[i].elf_reloc_val];
682 /* Set the howto pointer for an MN10300 ELF reloc. */
685 mn10300_info_to_howto (abfd, cache_ptr, dst)
686 bfd *abfd ATTRIBUTE_UNUSED;
688 Elf_Internal_Rela *dst;
692 r_type = ELF32_R_TYPE (dst->r_info);
693 BFD_ASSERT (r_type < (unsigned int) R_MN10300_MAX);
694 cache_ptr->howto = &elf_mn10300_howto_table[r_type];
697 /* Look through the relocs for a section during the first phase.
698 Since we don't do .gots or .plts, we just need to consider the
699 virtual table relocs for gc. */
702 mn10300_elf_check_relocs (abfd, info, sec, relocs)
704 struct bfd_link_info *info;
706 const Elf_Internal_Rela *relocs;
708 Elf_Internal_Shdr *symtab_hdr;
709 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
710 const Elf_Internal_Rela *rel;
711 const Elf_Internal_Rela *rel_end;
713 bfd_vma * local_got_offsets;
722 if (info->relocatable)
725 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
726 sym_hashes = elf_sym_hashes (abfd);
727 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
728 if (!elf_bad_symtab (abfd))
729 sym_hashes_end -= symtab_hdr->sh_info;
731 dynobj = elf_hash_table (info)->dynobj;
732 local_got_offsets = elf_local_got_offsets (abfd);
733 rel_end = relocs + sec->reloc_count;
734 for (rel = relocs; rel < rel_end; rel++)
736 struct elf_link_hash_entry *h;
737 unsigned long r_symndx;
739 r_symndx = ELF32_R_SYM (rel->r_info);
740 if (r_symndx < symtab_hdr->sh_info)
743 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
745 /* Some relocs require a global offset table. */
748 switch (ELF32_R_TYPE (rel->r_info))
750 case R_MN10300_GOT32:
751 case R_MN10300_GOT24:
752 case R_MN10300_GOT16:
753 case R_MN10300_GOTOFF32:
754 case R_MN10300_GOTOFF24:
755 case R_MN10300_GOTOFF16:
756 case R_MN10300_GOTPC32:
757 case R_MN10300_GOTPC16:
758 elf_hash_table (info)->dynobj = dynobj = abfd;
759 if (! _bfd_mn10300_elf_create_got_section (dynobj, info))
768 switch (ELF32_R_TYPE (rel->r_info))
770 /* This relocation describes the C++ object vtable hierarchy.
771 Reconstruct it for later use during GC. */
772 case R_MN10300_GNU_VTINHERIT:
773 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
777 /* This relocation describes which C++ vtable entries are actually
778 used. Record for later use during GC. */
779 case R_MN10300_GNU_VTENTRY:
780 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
783 case R_MN10300_GOT32:
784 case R_MN10300_GOT24:
785 case R_MN10300_GOT16:
786 /* This symbol requires a global offset table entry. */
790 sgot = bfd_get_section_by_name (dynobj, ".got");
791 BFD_ASSERT (sgot != NULL);
795 && (h != NULL || info->shared))
797 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
800 srelgot = bfd_make_section (dynobj, ".rela.got");
802 || ! bfd_set_section_flags (dynobj, srelgot,
809 || ! bfd_set_section_alignment (dynobj, srelgot, 2))
816 if (h->got.offset != (bfd_vma) -1)
817 /* We have already allocated space in the .got. */
820 h->got.offset = sgot->_raw_size;
822 /* Make sure this symbol is output as a dynamic symbol. */
823 if (h->dynindx == -1)
825 if (! bfd_elf_link_record_dynamic_symbol (info, h))
829 srelgot->_raw_size += sizeof (Elf32_External_Rela);
833 /* This is a global offset table entry for a local
835 if (local_got_offsets == NULL)
840 size = symtab_hdr->sh_info * sizeof (bfd_vma);
841 local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size);
843 if (local_got_offsets == NULL)
845 elf_local_got_offsets (abfd) = local_got_offsets;
847 for (i = 0; i < symtab_hdr->sh_info; i++)
848 local_got_offsets[i] = (bfd_vma) -1;
851 if (local_got_offsets[r_symndx] != (bfd_vma) -1)
852 /* We have already allocated space in the .got. */
855 local_got_offsets[r_symndx] = sgot->_raw_size;
858 /* If we are generating a shared object, we need to
859 output a R_MN10300_RELATIVE reloc so that the dynamic
860 linker can adjust this GOT entry. */
861 srelgot->_raw_size += sizeof (Elf32_External_Rela);
864 sgot->_raw_size += 4;
868 case R_MN10300_PLT32:
869 case R_MN10300_PLT16:
870 /* This symbol requires a procedure linkage table entry. We
871 actually build the entry in adjust_dynamic_symbol,
872 because this might be a case of linking PIC code which is
873 never referenced by a dynamic object, in which case we
874 don't need to generate a procedure linkage table entry
877 /* If this is a local symbol, we resolve it directly without
878 creating a procedure linkage table entry. */
882 if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
883 || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN)
886 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
894 case R_MN10300_PCREL32:
895 case R_MN10300_PCREL16:
896 case R_MN10300_PCREL8:
898 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
900 /* If we are creating a shared library, and this is a reloc
901 against a global symbol, or a non PC relative reloc
902 against a local symbol, then we need to copy the reloc
903 into the shared library. However, if we are linking with
904 -Bsymbolic, we do not need to copy a reloc against a
905 global symbol which is defined in an object we are
906 including in the link (i.e., DEF_REGULAR is set). At
907 this point we have not seen all the input files, so it is
908 possible that DEF_REGULAR is not set now but will be set
909 later (it is never cleared). We account for that
910 possibility below by storing information in the
911 pcrel_relocs_copied field of the hash table entry. */
913 && (sec->flags & SEC_ALLOC) != 0
914 && (! (elf_mn10300_howto_table[ELF32_R_TYPE (rel->r_info)]
918 || h->root.type == bfd_link_hash_defweak
919 || (h->elf_link_hash_flags
920 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
922 /* When creating a shared object, we must copy these
923 reloc types into the output file. We create a reloc
924 section in dynobj and make room for this reloc. */
929 name = (bfd_elf_string_from_elf_section
931 elf_elfheader (abfd)->e_shstrndx,
932 elf_section_data (sec)->rel_hdr.sh_name));
936 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
937 && strcmp (bfd_get_section_name (abfd, sec),
940 sreloc = bfd_get_section_by_name (dynobj, name);
945 sreloc = bfd_make_section (dynobj, name);
946 flags = (SEC_HAS_CONTENTS | SEC_READONLY
947 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
948 if ((sec->flags & SEC_ALLOC) != 0)
949 flags |= SEC_ALLOC | SEC_LOAD;
951 || ! bfd_set_section_flags (dynobj, sreloc, flags)
952 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
957 sreloc->_raw_size += sizeof (Elf32_External_Rela);
959 /* If we are linking with -Bsymbolic, and this is a
960 global symbol, we count the number of PC relative
961 relocations we have entered for this symbol, so that
962 we can discard them again if the symbol is later
963 defined by a regular object. Note that this function
964 is only called if we are using an elf_sh linker
965 hash table, which means that h is really a pointer to
966 an elf32_mn10300_link_hash_entry. */
968 && (elf_mn10300_howto_table[ELF32_R_TYPE (rel->r_info)]
971 struct elf32_mn10300_link_hash_entry *eh;
972 struct elf_mn10300_pcrel_relocs_copied *p;
974 eh = (struct elf32_mn10300_link_hash_entry *) h;
976 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
977 if (p->section == sreloc)
982 p = ((struct elf_mn10300_pcrel_relocs_copied *)
983 bfd_alloc (dynobj, sizeof *p));
987 p->next = eh->pcrel_relocs_copied;
988 eh->pcrel_relocs_copied = p;
1004 /* Return the section that should be marked against GC for a given
1008 mn10300_elf_gc_mark_hook (sec, info, rel, h, sym)
1010 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1011 Elf_Internal_Rela *rel;
1012 struct elf_link_hash_entry *h;
1013 Elf_Internal_Sym *sym;
1017 switch (ELF32_R_TYPE (rel->r_info))
1019 case R_MN10300_GNU_VTINHERIT:
1020 case R_MN10300_GNU_VTENTRY:
1024 switch (h->root.type)
1026 case bfd_link_hash_defined:
1027 case bfd_link_hash_defweak:
1028 return h->root.u.def.section;
1030 case bfd_link_hash_common:
1031 return h->root.u.c.p->section;
1039 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
1044 /* Perform a relocation as part of a final link. */
1045 static bfd_reloc_status_type
1046 mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd,
1047 input_section, contents, offset, value,
1048 addend, h, symndx, info, sym_sec, is_local)
1049 reloc_howto_type *howto;
1051 bfd *output_bfd ATTRIBUTE_UNUSED;
1052 asection *input_section;
1057 struct elf_link_hash_entry * h;
1058 unsigned long symndx;
1059 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1060 asection *sym_sec ATTRIBUTE_UNUSED;
1061 int is_local ATTRIBUTE_UNUSED;
1063 unsigned long r_type = howto->type;
1064 bfd_byte *hit_data = contents + offset;
1066 bfd_vma * local_got_offsets;
1071 dynobj = elf_hash_table (info)->dynobj;
1072 local_got_offsets = elf_local_got_offsets (input_bfd);
1080 case R_MN10300_NONE:
1081 return bfd_reloc_ok;
1085 && (input_section->flags & SEC_ALLOC) != 0)
1087 Elf_Internal_Rela outrel;
1088 bfd_boolean skip, relocate;
1090 /* When generating a shared object, these relocations are
1091 copied into the output file to be resolved at run
1097 name = (bfd_elf_string_from_elf_section
1099 elf_elfheader (input_bfd)->e_shstrndx,
1100 elf_section_data (input_section)->rel_hdr.sh_name));
1104 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
1105 && strcmp (bfd_get_section_name (input_bfd,
1109 sreloc = bfd_get_section_by_name (dynobj, name);
1110 BFD_ASSERT (sreloc != NULL);
1115 if (elf_section_data (input_section)->sec_info == NULL
1116 || (input_section->sec_info_type != ELF_INFO_TYPE_STABS))
1117 outrel.r_offset = offset;
1122 off = (_bfd_stab_section_offset
1123 (output_bfd, & elf_hash_table (info)->stab_info,
1125 & elf_section_data (input_section)->sec_info,
1127 if (off == (bfd_vma) -1)
1129 outrel.r_offset = off;
1132 outrel.r_offset += (input_section->output_section->vma
1133 + input_section->output_offset);
1137 memset (&outrel, 0, sizeof outrel);
1142 /* h->dynindx may be -1 if this symbol was marked to
1145 || ((info->symbolic || h->dynindx == -1)
1146 && (h->elf_link_hash_flags
1147 & ELF_LINK_HASH_DEF_REGULAR) != 0))
1150 outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
1151 outrel.r_addend = value + addend;
1155 BFD_ASSERT (h->dynindx != -1);
1157 outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_32);
1158 outrel.r_addend = value + addend;
1162 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
1163 (bfd_byte *) (((Elf32_External_Rela *) sreloc->contents)
1164 + sreloc->reloc_count));
1165 ++sreloc->reloc_count;
1167 /* If this reloc is against an external symbol, we do
1168 not want to fiddle with the addend. Otherwise, we
1169 need to include the symbol value so that it becomes
1170 an addend for the dynamic reloc. */
1172 return bfd_reloc_ok;
1175 bfd_put_32 (input_bfd, value, hit_data);
1176 return bfd_reloc_ok;
1181 if ((long) value > 0x7fffff || (long) value < -0x800000)
1182 return bfd_reloc_overflow;
1184 bfd_put_8 (input_bfd, value & 0xff, hit_data);
1185 bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
1186 bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
1187 return bfd_reloc_ok;
1192 if ((long) value > 0x7fff || (long) value < -0x8000)
1193 return bfd_reloc_overflow;
1195 bfd_put_16 (input_bfd, value, hit_data);
1196 return bfd_reloc_ok;
1201 if ((long) value > 0x7f || (long) value < -0x80)
1202 return bfd_reloc_overflow;
1204 bfd_put_8 (input_bfd, value, hit_data);
1205 return bfd_reloc_ok;
1207 case R_MN10300_PCREL8:
1208 value -= (input_section->output_section->vma
1209 + input_section->output_offset);
1213 if ((long) value > 0xff || (long) value < -0x100)
1214 return bfd_reloc_overflow;
1216 bfd_put_8 (input_bfd, value, hit_data);
1217 return bfd_reloc_ok;
1219 case R_MN10300_PCREL16:
1220 value -= (input_section->output_section->vma
1221 + input_section->output_offset);
1225 if ((long) value > 0xffff || (long) value < -0x10000)
1226 return bfd_reloc_overflow;
1228 bfd_put_16 (input_bfd, value, hit_data);
1229 return bfd_reloc_ok;
1231 case R_MN10300_PCREL32:
1233 && (input_section->flags & SEC_ALLOC) != 0
1236 && (! info->symbolic
1237 || (h->elf_link_hash_flags
1238 & ELF_LINK_HASH_DEF_REGULAR) == 0))
1240 Elf_Internal_Rela outrel;
1243 /* When generating a shared object, these relocations
1244 are copied into the output file to be resolved at run
1251 name = (bfd_elf_string_from_elf_section
1253 elf_elfheader (input_bfd)->e_shstrndx,
1254 elf_section_data (input_section)->rel_hdr.sh_name));
1258 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
1259 && strcmp (bfd_get_section_name (input_bfd,
1263 sreloc = bfd_get_section_by_name (dynobj, name);
1264 BFD_ASSERT (sreloc != NULL);
1269 if (elf_section_data (input_section)->sec_info == NULL
1270 || (input_section->sec_info_type != ELF_INFO_TYPE_STABS))
1271 outrel.r_offset = offset;
1276 off = (_bfd_stab_section_offset
1277 (output_bfd, & elf_hash_table (info)->stab_info,
1279 & elf_section_data (input_section)->sec_info,
1281 if (off == (bfd_vma) -1)
1283 outrel.r_offset = off;
1286 outrel.r_offset += (input_section->output_section->vma
1287 + input_section->output_offset);
1290 memset (&outrel, 0, sizeof outrel);
1293 BFD_ASSERT (h != NULL && h->dynindx != -1);
1294 outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_PCREL32);
1295 outrel.r_addend = addend;
1298 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
1299 (bfd_byte *) (((Elf32_External_Rela *)
1301 + sreloc->reloc_count));
1302 ++sreloc->reloc_count;
1304 return bfd_reloc_ok;
1307 value -= (input_section->output_section->vma
1308 + input_section->output_offset);
1312 bfd_put_32 (input_bfd, value, hit_data);
1313 return bfd_reloc_ok;
1315 case R_MN10300_GNU_VTINHERIT:
1316 case R_MN10300_GNU_VTENTRY:
1317 return bfd_reloc_ok;
1319 case R_MN10300_GOTPC32:
1320 /* Use global offset table as symbol value. */
1322 value = bfd_get_section_by_name (dynobj,
1323 ".got")->output_section->vma;
1324 value -= (input_section->output_section->vma
1325 + input_section->output_offset);
1329 bfd_put_32 (input_bfd, value, hit_data);
1330 return bfd_reloc_ok;
1332 case R_MN10300_GOTPC16:
1333 /* Use global offset table as symbol value. */
1335 value = bfd_get_section_by_name (dynobj,
1336 ".got")->output_section->vma;
1337 value -= (input_section->output_section->vma
1338 + input_section->output_offset);
1342 if ((long) value > 0xffff || (long) value < -0x10000)
1343 return bfd_reloc_overflow;
1345 bfd_put_16 (input_bfd, value, hit_data);
1346 return bfd_reloc_ok;
1348 case R_MN10300_GOTOFF32:
1349 value -= bfd_get_section_by_name (dynobj,
1350 ".got")->output_section->vma;
1353 bfd_put_32 (input_bfd, value, hit_data);
1354 return bfd_reloc_ok;
1356 case R_MN10300_GOTOFF24:
1357 value -= bfd_get_section_by_name (dynobj,
1358 ".got")->output_section->vma;
1361 if ((long) value > 0x7fffff || (long) value < -0x800000)
1362 return bfd_reloc_overflow;
1364 bfd_put_8 (input_bfd, value, hit_data);
1365 bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
1366 bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
1367 return bfd_reloc_ok;
1369 case R_MN10300_GOTOFF16:
1370 value -= bfd_get_section_by_name (dynobj,
1371 ".got")->output_section->vma;
1374 if ((long) value > 0xffff || (long) value < -0x10000)
1375 return bfd_reloc_overflow;
1377 bfd_put_16 (input_bfd, value, hit_data);
1378 return bfd_reloc_ok;
1380 case R_MN10300_PLT32:
1382 && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
1383 && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
1384 && h->plt.offset != (bfd_vma) -1)
1388 splt = bfd_get_section_by_name (dynobj, ".plt");
1390 value = (splt->output_section->vma
1391 + splt->output_offset
1392 + h->plt.offset) - value;
1395 value -= (input_section->output_section->vma
1396 + input_section->output_offset);
1400 bfd_put_32 (input_bfd, value, hit_data);
1401 return bfd_reloc_ok;
1403 case R_MN10300_PLT16:
1405 && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
1406 && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
1407 && h->plt.offset != (bfd_vma) -1)
1411 splt = bfd_get_section_by_name (dynobj, ".plt");
1413 value = (splt->output_section->vma
1414 + splt->output_offset
1415 + h->plt.offset) - value;
1418 value -= (input_section->output_section->vma
1419 + input_section->output_offset);
1423 if ((long) value > 0xffff || (long) value < -0x10000)
1424 return bfd_reloc_overflow;
1426 bfd_put_16 (input_bfd, value, hit_data);
1427 return bfd_reloc_ok;
1429 case R_MN10300_GOT32:
1430 case R_MN10300_GOT24:
1431 case R_MN10300_GOT16:
1435 sgot = bfd_get_section_by_name (dynobj, ".got");
1441 off = h->got.offset;
1442 BFD_ASSERT (off != (bfd_vma) -1);
1444 if (! elf_hash_table (info)->dynamic_sections_created
1446 && (info->symbolic || h->dynindx == -1)
1447 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
1448 /* This is actually a static link, or it is a
1449 -Bsymbolic link and the symbol is defined
1450 locally, or the symbol was forced to be local
1451 because of a version file. We must initialize
1452 this entry in the global offset table.
1454 When doing a dynamic link, we create a .rela.got
1455 relocation entry to initialize the value. This
1456 is done in the finish_dynamic_symbol routine. */
1457 bfd_put_32 (output_bfd, value,
1458 sgot->contents + off);
1460 value = sgot->output_offset + off;
1466 off = elf_local_got_offsets (input_bfd)[symndx];
1468 bfd_put_32 (output_bfd, value, sgot->contents + off);
1473 Elf_Internal_Rela outrel;
1475 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1476 BFD_ASSERT (srelgot != NULL);
1478 outrel.r_offset = (sgot->output_section->vma
1479 + sgot->output_offset
1481 outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
1482 outrel.r_addend = value;
1483 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
1484 (bfd_byte *) (((Elf32_External_Rela *)
1486 + srelgot->reloc_count));
1487 ++ srelgot->reloc_count;
1490 value = sgot->output_offset + off;
1496 if (r_type == R_MN10300_GOT32)
1498 bfd_put_32 (input_bfd, value, hit_data);
1499 return bfd_reloc_ok;
1501 else if (r_type == R_MN10300_GOT24)
1503 if ((long) value > 0x7fffff || (long) value < -0x800000)
1504 return bfd_reloc_overflow;
1506 bfd_put_8 (input_bfd, value & 0xff, hit_data);
1507 bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
1508 bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
1509 return bfd_reloc_ok;
1511 else if (r_type == R_MN10300_GOT16)
1513 if ((long) value > 0xffff || (long) value < -0x10000)
1514 return bfd_reloc_overflow;
1516 bfd_put_16 (input_bfd, value, hit_data);
1517 return bfd_reloc_ok;
1522 return bfd_reloc_notsupported;
1526 /* Relocate an MN10300 ELF section. */
1528 mn10300_elf_relocate_section (output_bfd, info, input_bfd, input_section,
1529 contents, relocs, local_syms, local_sections)
1531 struct bfd_link_info *info;
1533 asection *input_section;
1535 Elf_Internal_Rela *relocs;
1536 Elf_Internal_Sym *local_syms;
1537 asection **local_sections;
1539 Elf_Internal_Shdr *symtab_hdr;
1540 struct elf_link_hash_entry **sym_hashes;
1541 Elf_Internal_Rela *rel, *relend;
1543 if (info->relocatable)
1546 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1547 sym_hashes = elf_sym_hashes (input_bfd);
1550 relend = relocs + input_section->reloc_count;
1551 for (; rel < relend; rel++)
1554 reloc_howto_type *howto;
1555 unsigned long r_symndx;
1556 Elf_Internal_Sym *sym;
1558 struct elf32_mn10300_link_hash_entry *h;
1560 bfd_reloc_status_type r;
1562 r_symndx = ELF32_R_SYM (rel->r_info);
1563 r_type = ELF32_R_TYPE (rel->r_info);
1564 howto = elf_mn10300_howto_table + r_type;
1566 /* Just skip the vtable gc relocs. */
1567 if (r_type == R_MN10300_GNU_VTINHERIT
1568 || r_type == R_MN10300_GNU_VTENTRY)
1574 if (r_symndx < symtab_hdr->sh_info)
1576 sym = local_syms + r_symndx;
1577 sec = local_sections[r_symndx];
1578 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1582 bfd_boolean unresolved_reloc;
1584 struct elf_link_hash_entry *hh;
1586 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1587 r_symndx, symtab_hdr, sym_hashes,
1588 hh, sec, relocation,
1589 unresolved_reloc, warned);
1591 h = (struct elf32_mn10300_link_hash_entry *) hh;
1593 if ((h->root.root.type == bfd_link_hash_defined
1594 || h->root.root.type == bfd_link_hash_defweak)
1595 && ( r_type == R_MN10300_GOTPC32
1596 || r_type == R_MN10300_GOTPC16
1597 || (( r_type == R_MN10300_PLT32
1598 || r_type == R_MN10300_PLT16)
1599 && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
1600 && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
1601 && h->root.plt.offset != (bfd_vma) -1)
1602 || (( r_type == R_MN10300_GOT32
1603 || r_type == R_MN10300_GOT24
1604 || r_type == R_MN10300_GOT16)
1605 && elf_hash_table (info)->dynamic_sections_created
1607 || (! info->symbolic && h->root.dynindx != -1)
1608 || (h->root.elf_link_hash_flags
1609 & ELF_LINK_HASH_DEF_REGULAR) == 0))
1611 && ((! info->symbolic && h->root.dynindx != -1)
1612 || (h->root.elf_link_hash_flags
1613 & ELF_LINK_HASH_DEF_REGULAR) == 0)
1614 && ( r_type == R_MN10300_32
1615 || r_type == R_MN10300_PCREL32)
1616 && ((input_section->flags & SEC_ALLOC) != 0
1617 /* DWARF will emit R_MN10300_32 relocations
1618 in its sections against symbols defined
1619 externally in shared libraries. We can't
1620 do anything with them here. */
1621 || ((input_section->flags & SEC_DEBUGGING) != 0
1622 && (h->root.elf_link_hash_flags
1623 & ELF_LINK_HASH_DEF_DYNAMIC) != 0)))))
1624 /* In these cases, we don't need the relocation
1625 value. We check specially because in some
1626 obscure cases sec->output_section will be NULL. */
1629 else if (unresolved_reloc)
1630 (*_bfd_error_handler)
1631 (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"),
1632 bfd_get_filename (input_bfd), h->root.root.root.string,
1633 bfd_get_section_name (input_bfd, input_section));
1636 r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd,
1638 contents, rel->r_offset,
1639 relocation, rel->r_addend,
1640 (struct elf_link_hash_entry *)h,
1642 info, sec, h == NULL);
1644 if (r != bfd_reloc_ok)
1647 const char *msg = (const char *) 0;
1650 name = h->root.root.root.string;
1653 name = (bfd_elf_string_from_elf_section
1654 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1655 if (name == NULL || *name == '\0')
1656 name = bfd_section_name (input_bfd, sec);
1661 case bfd_reloc_overflow:
1662 if (! ((*info->callbacks->reloc_overflow)
1663 (info, name, howto->name, (bfd_vma) 0,
1664 input_bfd, input_section, rel->r_offset)))
1668 case bfd_reloc_undefined:
1669 if (! ((*info->callbacks->undefined_symbol)
1670 (info, name, input_bfd, input_section,
1671 rel->r_offset, TRUE)))
1675 case bfd_reloc_outofrange:
1676 msg = _("internal error: out of range error");
1679 case bfd_reloc_notsupported:
1680 msg = _("internal error: unsupported relocation error");
1683 case bfd_reloc_dangerous:
1684 msg = _("internal error: dangerous error");
1688 msg = _("internal error: unknown error");
1692 if (!((*info->callbacks->warning)
1693 (info, msg, name, input_bfd, input_section,
1704 /* Finish initializing one hash table entry. */
1706 elf32_mn10300_finish_hash_table_entry (gen_entry, in_args)
1707 struct bfd_hash_entry *gen_entry;
1710 struct elf32_mn10300_link_hash_entry *entry;
1711 struct bfd_link_info *link_info = (struct bfd_link_info *)in_args;
1712 unsigned int byte_count = 0;
1714 entry = (struct elf32_mn10300_link_hash_entry *) gen_entry;
1716 if (entry->root.root.type == bfd_link_hash_warning)
1717 entry = (struct elf32_mn10300_link_hash_entry *) entry->root.root.u.i.link;
1719 /* If we already know we want to convert "call" to "calls" for calls
1720 to this symbol, then return now. */
1721 if (entry->flags == MN10300_CONVERT_CALL_TO_CALLS)
1724 /* If there are no named calls to this symbol, or there's nothing we
1725 can move from the function itself into the "call" instruction,
1726 then note that all "call" instructions should be converted into
1727 "calls" instructions and return. If a symbol is available for
1728 dynamic symbol resolution (overridable or overriding), avoid
1729 custom calling conventions. */
1730 if (entry->direct_calls == 0
1731 || (entry->stack_size == 0 && entry->movm_args == 0)
1732 || (elf_hash_table (link_info)->dynamic_sections_created
1733 && ELF_ST_VISIBILITY (entry->root.other) != STV_INTERNAL
1734 && ELF_ST_VISIBILITY (entry->root.other) != STV_HIDDEN))
1736 /* Make a note that we should convert "call" instructions to "calls"
1737 instructions for calls to this symbol. */
1738 entry->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1742 /* We may be able to move some instructions from the function itself into
1743 the "call" instruction. Count how many bytes we might be able to
1744 eliminate in the function itself. */
1746 /* A movm instruction is two bytes. */
1747 if (entry->movm_args)
1750 /* Count the insn to allocate stack space too. */
1751 if (entry->stack_size > 0)
1753 if (entry->stack_size <= 128)
1759 /* If using "call" will result in larger code, then turn all
1760 the associated "call" instructions into "calls" instructions. */
1761 if (byte_count < entry->direct_calls)
1762 entry->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1764 /* This routine never fails. */
1768 /* This function handles relaxing for the mn10300.
1770 There are quite a few relaxing opportunities available on the mn10300:
1772 * calls:32 -> calls:16 2 bytes
1773 * call:32 -> call:16 2 bytes
1775 * call:32 -> calls:32 1 byte
1776 * call:16 -> calls:16 1 byte
1777 * These are done anytime using "calls" would result
1778 in smaller code, or when necessary to preserve the
1779 meaning of the program.
1783 * In some circumstances we can move instructions
1784 from a function prologue into a "call" instruction.
1785 This is only done if the resulting code is no larger
1786 than the original code.
1788 * jmp:32 -> jmp:16 2 bytes
1789 * jmp:16 -> bra:8 1 byte
1791 * If the previous instruction is a conditional branch
1792 around the jump/bra, we may be able to reverse its condition
1793 and change its target to the jump's target. The jump/bra
1794 can then be deleted. 2 bytes
1796 * mov abs32 -> mov abs16 1 or 2 bytes
1798 * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes
1799 - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes
1801 * Most instructions which accept d32 can relax to d16 1 or 2 bytes
1802 - Most instructions which accept d16 can relax to d8 1 or 2 bytes
1804 We don't handle imm16->imm8 or d16->d8 as they're very rare
1805 and somewhat more difficult to support. */
1808 mn10300_elf_relax_section (abfd, sec, link_info, again)
1811 struct bfd_link_info *link_info;
1814 Elf_Internal_Shdr *symtab_hdr;
1815 Elf_Internal_Rela *internal_relocs = NULL;
1816 Elf_Internal_Rela *irel, *irelend;
1817 bfd_byte *contents = NULL;
1818 Elf_Internal_Sym *isymbuf = NULL;
1819 struct elf32_mn10300_link_hash_table *hash_table;
1820 asection *section = sec;
1822 /* Assume nothing changes. */
1825 /* We need a pointer to the mn10300 specific hash table. */
1826 hash_table = elf32_mn10300_hash_table (link_info);
1828 /* Initialize fields in each hash table entry the first time through. */
1829 if ((hash_table->flags & MN10300_HASH_ENTRIES_INITIALIZED) == 0)
1833 /* Iterate over all the input bfds. */
1834 for (input_bfd = link_info->input_bfds;
1836 input_bfd = input_bfd->link_next)
1838 /* We're going to need all the symbols for each bfd. */
1839 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1840 if (symtab_hdr->sh_info != 0)
1842 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1843 if (isymbuf == NULL)
1844 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
1845 symtab_hdr->sh_info, 0,
1847 if (isymbuf == NULL)
1851 /* Iterate over each section in this bfd. */
1852 for (section = input_bfd->sections;
1854 section = section->next)
1856 struct elf32_mn10300_link_hash_entry *hash;
1857 Elf_Internal_Sym *sym;
1858 asection *sym_sec = NULL;
1859 const char *sym_name;
1862 /* If there's nothing to do in this section, skip it. */
1863 if (! (((section->flags & SEC_RELOC) != 0
1864 && section->reloc_count != 0)
1865 || (section->flags & SEC_CODE) != 0))
1868 /* Get cached copy of section contents if it exists. */
1869 if (elf_section_data (section)->this_hdr.contents != NULL)
1870 contents = elf_section_data (section)->this_hdr.contents;
1871 else if (section->_raw_size != 0)
1873 /* Go get them off disk. */
1874 contents = (bfd_byte *) bfd_malloc (section->_raw_size);
1875 if (contents == NULL)
1878 if (!bfd_get_section_contents (input_bfd, section,
1879 contents, (file_ptr) 0,
1880 section->_raw_size))
1886 /* If there aren't any relocs, then there's nothing to do. */
1887 if ((section->flags & SEC_RELOC) != 0
1888 && section->reloc_count != 0)
1891 /* Get a copy of the native relocations. */
1892 internal_relocs = (_bfd_elf_link_read_relocs
1893 (input_bfd, section, (PTR) NULL,
1894 (Elf_Internal_Rela *) NULL,
1895 link_info->keep_memory));
1896 if (internal_relocs == NULL)
1899 /* Now examine each relocation. */
1900 irel = internal_relocs;
1901 irelend = irel + section->reloc_count;
1902 for (; irel < irelend; irel++)
1905 unsigned long r_index;
1908 r_type = ELF32_R_TYPE (irel->r_info);
1909 r_index = ELF32_R_SYM (irel->r_info);
1911 if (r_type < 0 || r_type >= (int) R_MN10300_MAX)
1914 /* We need the name and hash table entry of the target
1920 if (r_index < symtab_hdr->sh_info)
1922 /* A local symbol. */
1923 Elf_Internal_Sym *isym;
1924 struct elf_link_hash_table *elftab;
1927 isym = isymbuf + r_index;
1928 if (isym->st_shndx == SHN_UNDEF)
1929 sym_sec = bfd_und_section_ptr;
1930 else if (isym->st_shndx == SHN_ABS)
1931 sym_sec = bfd_abs_section_ptr;
1932 else if (isym->st_shndx == SHN_COMMON)
1933 sym_sec = bfd_com_section_ptr;
1936 = bfd_section_from_elf_index (input_bfd,
1940 = bfd_elf_string_from_elf_section (input_bfd,
1945 /* If it isn't a function, then we don't care
1947 if (ELF_ST_TYPE (isym->st_info) != STT_FUNC)
1950 /* Tack on an ID so we can uniquely identify this
1951 local symbol in the global hash table. */
1952 amt = strlen (sym_name) + 10;
1953 new_name = bfd_malloc (amt);
1957 sprintf (new_name, "%s_%08x",
1958 sym_name, (int) sym_sec);
1959 sym_name = new_name;
1961 elftab = &hash_table->static_hash_table->root;
1962 hash = ((struct elf32_mn10300_link_hash_entry *)
1963 elf_link_hash_lookup (elftab, sym_name,
1964 TRUE, TRUE, FALSE));
1969 r_index -= symtab_hdr->sh_info;
1970 hash = (struct elf32_mn10300_link_hash_entry *)
1971 elf_sym_hashes (input_bfd)[r_index];
1974 /* If this is not a "call" instruction, then we
1975 should convert "call" instructions to "calls"
1977 code = bfd_get_8 (input_bfd,
1978 contents + irel->r_offset - 1);
1979 if (code != 0xdd && code != 0xcd)
1980 hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1982 /* If this is a jump/call, then bump the
1983 direct_calls counter. Else force "call" to
1984 "calls" conversions. */
1985 if (r_type == R_MN10300_PCREL32
1986 || r_type == R_MN10300_PLT32
1987 || r_type == R_MN10300_PLT16
1988 || r_type == R_MN10300_PCREL16)
1989 hash->direct_calls++;
1991 hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1995 /* Now look at the actual contents to get the stack size,
1996 and a list of what registers were saved in the prologue
1998 if ((section->flags & SEC_CODE) != 0)
2000 Elf_Internal_Sym *isym, *isymend;
2001 unsigned int sec_shndx;
2002 struct elf_link_hash_entry **hashes;
2003 struct elf_link_hash_entry **end_hashes;
2004 unsigned int symcount;
2006 sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
2009 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2010 - symtab_hdr->sh_info);
2011 hashes = elf_sym_hashes (input_bfd);
2012 end_hashes = hashes + symcount;
2014 /* Look at each function defined in this section and
2015 update info for that function. */
2016 isymend = isymbuf + symtab_hdr->sh_info;
2017 for (isym = isymbuf; isym < isymend; isym++)
2019 if (isym->st_shndx == sec_shndx
2020 && ELF_ST_TYPE (isym->st_info) == STT_FUNC)
2022 struct elf_link_hash_table *elftab;
2024 struct elf_link_hash_entry **lhashes = hashes;
2026 /* Skip a local symbol if it aliases a
2028 for (; lhashes < end_hashes; lhashes++)
2030 hash = (struct elf32_mn10300_link_hash_entry *) *lhashes;
2031 if ((hash->root.root.type == bfd_link_hash_defined
2032 || hash->root.root.type == bfd_link_hash_defweak)
2033 && hash->root.root.u.def.section == section
2034 && hash->root.type == STT_FUNC
2035 && hash->root.root.u.def.value == isym->st_value)
2038 if (lhashes != end_hashes)
2041 if (isym->st_shndx == SHN_UNDEF)
2042 sym_sec = bfd_und_section_ptr;
2043 else if (isym->st_shndx == SHN_ABS)
2044 sym_sec = bfd_abs_section_ptr;
2045 else if (isym->st_shndx == SHN_COMMON)
2046 sym_sec = bfd_com_section_ptr;
2049 = bfd_section_from_elf_index (input_bfd,
2052 sym_name = (bfd_elf_string_from_elf_section
2053 (input_bfd, symtab_hdr->sh_link,
2056 /* Tack on an ID so we can uniquely identify this
2057 local symbol in the global hash table. */
2058 amt = strlen (sym_name) + 10;
2059 new_name = bfd_malloc (amt);
2063 sprintf (new_name, "%s_%08x",
2064 sym_name, (int) sym_sec);
2065 sym_name = new_name;
2067 elftab = &hash_table->static_hash_table->root;
2068 hash = ((struct elf32_mn10300_link_hash_entry *)
2069 elf_link_hash_lookup (elftab, sym_name,
2070 TRUE, TRUE, FALSE));
2072 compute_function_info (input_bfd, hash,
2073 isym->st_value, contents);
2077 for (; hashes < end_hashes; hashes++)
2079 hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
2080 if ((hash->root.root.type == bfd_link_hash_defined
2081 || hash->root.root.type == bfd_link_hash_defweak)
2082 && hash->root.root.u.def.section == section
2083 && hash->root.type == STT_FUNC)
2084 compute_function_info (input_bfd, hash,
2085 (hash)->root.root.u.def.value,
2090 /* Cache or free any memory we allocated for the relocs. */
2091 if (internal_relocs != NULL
2092 && elf_section_data (section)->relocs != internal_relocs)
2093 free (internal_relocs);
2094 internal_relocs = NULL;
2096 /* Cache or free any memory we allocated for the contents. */
2097 if (contents != NULL
2098 && elf_section_data (section)->this_hdr.contents != contents)
2100 if (! link_info->keep_memory)
2104 /* Cache the section contents for elf_link_input_bfd. */
2105 elf_section_data (section)->this_hdr.contents = contents;
2111 /* Cache or free any memory we allocated for the symbols. */
2113 && symtab_hdr->contents != (unsigned char *) isymbuf)
2115 if (! link_info->keep_memory)
2119 /* Cache the symbols for elf_link_input_bfd. */
2120 symtab_hdr->contents = (unsigned char *) isymbuf;
2126 /* Now iterate on each symbol in the hash table and perform
2127 the final initialization steps on each. */
2128 elf32_mn10300_link_hash_traverse (hash_table,
2129 elf32_mn10300_finish_hash_table_entry,
2131 elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
2132 elf32_mn10300_finish_hash_table_entry,
2135 /* All entries in the hash table are fully initialized. */
2136 hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED;
2138 /* Now that everything has been initialized, go through each
2139 code section and delete any prologue insns which will be
2140 redundant because their operations will be performed by
2141 a "call" instruction. */
2142 for (input_bfd = link_info->input_bfds;
2144 input_bfd = input_bfd->link_next)
2146 /* We're going to need all the local symbols for each bfd. */
2147 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2148 if (symtab_hdr->sh_info != 0)
2150 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2151 if (isymbuf == NULL)
2152 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2153 symtab_hdr->sh_info, 0,
2155 if (isymbuf == NULL)
2159 /* Walk over each section in this bfd. */
2160 for (section = input_bfd->sections;
2162 section = section->next)
2164 unsigned int sec_shndx;
2165 Elf_Internal_Sym *isym, *isymend;
2166 struct elf_link_hash_entry **hashes;
2167 struct elf_link_hash_entry **end_hashes;
2168 unsigned int symcount;
2170 /* Skip non-code sections and empty sections. */
2171 if ((section->flags & SEC_CODE) == 0 || section->_raw_size == 0)
2174 if (section->reloc_count != 0)
2176 /* Get a copy of the native relocations. */
2177 internal_relocs = (_bfd_elf_link_read_relocs
2178 (input_bfd, section, (PTR) NULL,
2179 (Elf_Internal_Rela *) NULL,
2180 link_info->keep_memory));
2181 if (internal_relocs == NULL)
2185 /* Get cached copy of section contents if it exists. */
2186 if (elf_section_data (section)->this_hdr.contents != NULL)
2187 contents = elf_section_data (section)->this_hdr.contents;
2190 /* Go get them off disk. */
2191 contents = (bfd_byte *) bfd_malloc (section->_raw_size);
2192 if (contents == NULL)
2195 if (!bfd_get_section_contents (input_bfd, section,
2196 contents, (file_ptr) 0,
2197 section->_raw_size))
2201 sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
2204 /* Now look for any function in this section which needs
2205 insns deleted from its prologue. */
2206 isymend = isymbuf + symtab_hdr->sh_info;
2207 for (isym = isymbuf; isym < isymend; isym++)
2209 struct elf32_mn10300_link_hash_entry *sym_hash;
2210 asection *sym_sec = NULL;
2211 const char *sym_name;
2213 struct elf_link_hash_table *elftab;
2216 if (isym->st_shndx != sec_shndx)
2219 if (isym->st_shndx == SHN_UNDEF)
2220 sym_sec = bfd_und_section_ptr;
2221 else if (isym->st_shndx == SHN_ABS)
2222 sym_sec = bfd_abs_section_ptr;
2223 else if (isym->st_shndx == SHN_COMMON)
2224 sym_sec = bfd_com_section_ptr;
2227 = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
2230 = bfd_elf_string_from_elf_section (input_bfd,
2231 symtab_hdr->sh_link,
2234 /* Tack on an ID so we can uniquely identify this
2235 local symbol in the global hash table. */
2236 amt = strlen (sym_name) + 10;
2237 new_name = bfd_malloc (amt);
2240 sprintf (new_name, "%s_%08x", sym_name, (int) sym_sec);
2241 sym_name = new_name;
2243 elftab = &hash_table->static_hash_table->root;
2244 sym_hash = ((struct elf32_mn10300_link_hash_entry *)
2245 elf_link_hash_lookup (elftab, sym_name,
2246 FALSE, FALSE, FALSE));
2249 if (sym_hash == NULL)
2252 if (! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
2253 && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
2257 /* Note that we've changed things. */
2258 elf_section_data (section)->relocs = internal_relocs;
2259 elf_section_data (section)->this_hdr.contents = contents;
2260 symtab_hdr->contents = (unsigned char *) isymbuf;
2262 /* Count how many bytes we're going to delete. */
2263 if (sym_hash->movm_args)
2266 if (sym_hash->stack_size > 0)
2268 if (sym_hash->stack_size <= 128)
2274 /* Note that we've deleted prologue bytes for this
2276 sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
2278 /* Actually delete the bytes. */
2279 if (!mn10300_elf_relax_delete_bytes (input_bfd,
2285 /* Something changed. Not strictly necessary, but
2286 may lead to more relaxing opportunities. */
2291 /* Look for any global functions in this section which
2292 need insns deleted from their prologues. */
2293 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2294 - symtab_hdr->sh_info);
2295 hashes = elf_sym_hashes (input_bfd);
2296 end_hashes = hashes + symcount;
2297 for (; hashes < end_hashes; hashes++)
2299 struct elf32_mn10300_link_hash_entry *sym_hash;
2301 sym_hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
2302 if ((sym_hash->root.root.type == bfd_link_hash_defined
2303 || sym_hash->root.root.type == bfd_link_hash_defweak)
2304 && sym_hash->root.root.u.def.section == section
2305 && ! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
2306 && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
2311 /* Note that we've changed things. */
2312 elf_section_data (section)->relocs = internal_relocs;
2313 elf_section_data (section)->this_hdr.contents = contents;
2314 symtab_hdr->contents = (unsigned char *) isymbuf;
2316 /* Count how many bytes we're going to delete. */
2317 if (sym_hash->movm_args)
2320 if (sym_hash->stack_size > 0)
2322 if (sym_hash->stack_size <= 128)
2328 /* Note that we've deleted prologue bytes for this
2330 sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
2332 /* Actually delete the bytes. */
2333 symval = sym_hash->root.root.u.def.value;
2334 if (!mn10300_elf_relax_delete_bytes (input_bfd,
2340 /* Something changed. Not strictly necessary, but
2341 may lead to more relaxing opportunities. */
2346 /* Cache or free any memory we allocated for the relocs. */
2347 if (internal_relocs != NULL
2348 && elf_section_data (section)->relocs != internal_relocs)
2349 free (internal_relocs);
2350 internal_relocs = NULL;
2352 /* Cache or free any memory we allocated for the contents. */
2353 if (contents != NULL
2354 && elf_section_data (section)->this_hdr.contents != contents)
2356 if (! link_info->keep_memory)
2360 /* Cache the section contents for elf_link_input_bfd. */
2361 elf_section_data (section)->this_hdr.contents = contents;
2367 /* Cache or free any memory we allocated for the symbols. */
2369 && symtab_hdr->contents != (unsigned char *) isymbuf)
2371 if (! link_info->keep_memory)
2375 /* Cache the symbols for elf_link_input_bfd. */
2376 symtab_hdr->contents = (unsigned char *) isymbuf;
2383 /* (Re)initialize for the basic instruction shortening/relaxing pass. */
2385 internal_relocs = NULL;
2387 /* For error_return. */
2390 /* We don't have to do anything for a relocatable link, if
2391 this section does not have relocs, or if this is not a
2393 if (link_info->relocatable
2394 || (sec->flags & SEC_RELOC) == 0
2395 || sec->reloc_count == 0
2396 || (sec->flags & SEC_CODE) == 0)
2399 /* If this is the first time we have been called for this section,
2400 initialize the cooked size. */
2401 if (sec->_cooked_size == 0)
2402 sec->_cooked_size = sec->_raw_size;
2404 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2406 /* Get a copy of the native relocations. */
2407 internal_relocs = (_bfd_elf_link_read_relocs
2408 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
2409 link_info->keep_memory));
2410 if (internal_relocs == NULL)
2413 /* Walk through them looking for relaxing opportunities. */
2414 irelend = internal_relocs + sec->reloc_count;
2415 for (irel = internal_relocs; irel < irelend; irel++)
2418 struct elf32_mn10300_link_hash_entry *h = NULL;
2420 /* If this isn't something that can be relaxed, then ignore
2422 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_NONE
2423 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8
2424 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_MAX)
2427 /* Get the section contents if we haven't done so already. */
2428 if (contents == NULL)
2430 /* Get cached copy if it exists. */
2431 if (elf_section_data (sec)->this_hdr.contents != NULL)
2432 contents = elf_section_data (sec)->this_hdr.contents;
2435 /* Go get them off disk. */
2436 contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
2437 if (contents == NULL)
2440 if (! bfd_get_section_contents (abfd, sec, contents,
2441 (file_ptr) 0, sec->_raw_size))
2446 /* Read this BFD's symbols if we haven't done so already. */
2447 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
2449 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2450 if (isymbuf == NULL)
2451 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
2452 symtab_hdr->sh_info, 0,
2454 if (isymbuf == NULL)
2458 /* Get the value of the symbol referred to by the reloc. */
2459 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
2461 Elf_Internal_Sym *isym;
2462 asection *sym_sec = NULL;
2463 const char *sym_name;
2466 /* A local symbol. */
2467 isym = isymbuf + ELF32_R_SYM (irel->r_info);
2468 if (isym->st_shndx == SHN_UNDEF)
2469 sym_sec = bfd_und_section_ptr;
2470 else if (isym->st_shndx == SHN_ABS)
2471 sym_sec = bfd_abs_section_ptr;
2472 else if (isym->st_shndx == SHN_COMMON)
2473 sym_sec = bfd_com_section_ptr;
2475 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2477 symval = (isym->st_value
2478 + sym_sec->output_section->vma
2479 + sym_sec->output_offset);
2480 sym_name = bfd_elf_string_from_elf_section (abfd,
2481 symtab_hdr->sh_link,
2484 /* Tack on an ID so we can uniquely identify this
2485 local symbol in the global hash table. */
2486 new_name = bfd_malloc ((bfd_size_type) strlen (sym_name) + 10);
2489 sprintf (new_name, "%s_%08x", sym_name, (int) sym_sec);
2490 sym_name = new_name;
2492 h = (struct elf32_mn10300_link_hash_entry *)
2493 elf_link_hash_lookup (&hash_table->static_hash_table->root,
2494 sym_name, FALSE, FALSE, FALSE);
2501 /* An external symbol. */
2502 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2503 h = (struct elf32_mn10300_link_hash_entry *)
2504 (elf_sym_hashes (abfd)[indx]);
2505 BFD_ASSERT (h != NULL);
2506 if (h->root.root.type != bfd_link_hash_defined
2507 && h->root.root.type != bfd_link_hash_defweak)
2509 /* This appears to be a reference to an undefined
2510 symbol. Just ignore it--it will be caught by the
2511 regular reloc processing. */
2515 symval = (h->root.root.u.def.value
2516 + h->root.root.u.def.section->output_section->vma
2517 + h->root.root.u.def.section->output_offset);
2520 /* For simplicity of coding, we are going to modify the section
2521 contents, the section relocs, and the BFD symbol table. We
2522 must tell the rest of the code not to free up this
2523 information. It would be possible to instead create a table
2524 of changes which have to be made, as is done in coff-mips.c;
2525 that would be more work, but would require less memory when
2526 the linker is run. */
2528 /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative
2529 branch/call, also deal with "call" -> "calls" conversions and
2530 insertion of prologue data into "call" instructions. */
2531 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32
2532 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32)
2534 bfd_vma value = symval;
2536 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32
2538 && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
2539 && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
2540 && h->root.plt.offset != (bfd_vma) -1)
2544 splt = bfd_get_section_by_name (elf_hash_table (link_info)
2547 value = ((splt->output_section->vma
2548 + splt->output_offset
2549 + h->root.plt.offset)
2550 - (sec->output_section->vma
2551 + sec->output_offset
2555 /* If we've got a "call" instruction that needs to be turned
2556 into a "calls" instruction, do so now. It saves a byte. */
2557 if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
2561 /* Get the opcode. */
2562 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2564 /* Make sure we're working with a "call" instruction! */
2567 /* Note that we've changed the relocs, section contents,
2569 elf_section_data (sec)->relocs = internal_relocs;
2570 elf_section_data (sec)->this_hdr.contents = contents;
2571 symtab_hdr->contents = (unsigned char *) isymbuf;
2573 /* Fix the opcode. */
2574 bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1);
2575 bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
2577 /* Fix irel->r_offset and irel->r_addend. */
2578 irel->r_offset += 1;
2579 irel->r_addend += 1;
2581 /* Delete one byte of data. */
2582 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2583 irel->r_offset + 3, 1))
2586 /* That will change things, so, we should relax again.
2587 Note that this is not required, and it may be slow. */
2593 /* We've got a "call" instruction which needs some data
2594 from target function filled in. */
2597 /* Get the opcode. */
2598 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2600 /* Insert data from the target function into the "call"
2601 instruction if needed. */
2604 bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 4);
2605 bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
2606 contents + irel->r_offset + 5);
2610 /* Deal with pc-relative gunk. */
2611 value -= (sec->output_section->vma + sec->output_offset);
2612 value -= irel->r_offset;
2613 value += irel->r_addend;
2615 /* See if the value will fit in 16 bits, note the high value is
2616 0x7fff + 2 as the target will be two bytes closer if we are
2618 if ((long) value < 0x8001 && (long) value > -0x8000)
2622 /* Get the opcode. */
2623 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2625 if (code != 0xdc && code != 0xdd && code != 0xff)
2628 /* Note that we've changed the relocs, section contents, etc. */
2629 elf_section_data (sec)->relocs = internal_relocs;
2630 elf_section_data (sec)->this_hdr.contents = contents;
2631 symtab_hdr->contents = (unsigned char *) isymbuf;
2633 /* Fix the opcode. */
2635 bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1);
2636 else if (code == 0xdd)
2637 bfd_put_8 (abfd, 0xcd, contents + irel->r_offset - 1);
2638 else if (code == 0xff)
2639 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
2641 /* Fix the relocation's type. */
2642 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2643 (ELF32_R_TYPE (irel->r_info)
2644 == (int) R_MN10300_PLT32)
2648 /* Delete two bytes of data. */
2649 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2650 irel->r_offset + 1, 2))
2653 /* That will change things, so, we should relax again.
2654 Note that this is not required, and it may be slow. */
2659 /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative
2661 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL16)
2663 bfd_vma value = symval;
2665 /* If we've got a "call" instruction that needs to be turned
2666 into a "calls" instruction, do so now. It saves a byte. */
2667 if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
2671 /* Get the opcode. */
2672 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2674 /* Make sure we're working with a "call" instruction! */
2677 /* Note that we've changed the relocs, section contents,
2679 elf_section_data (sec)->relocs = internal_relocs;
2680 elf_section_data (sec)->this_hdr.contents = contents;
2681 symtab_hdr->contents = (unsigned char *) isymbuf;
2683 /* Fix the opcode. */
2684 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1);
2685 bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
2687 /* Fix irel->r_offset and irel->r_addend. */
2688 irel->r_offset += 1;
2689 irel->r_addend += 1;
2691 /* Delete one byte of data. */
2692 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2693 irel->r_offset + 1, 1))
2696 /* That will change things, so, we should relax again.
2697 Note that this is not required, and it may be slow. */
2705 /* Get the opcode. */
2706 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2708 /* Insert data from the target function into the "call"
2709 instruction if needed. */
2712 bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 2);
2713 bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
2714 contents + irel->r_offset + 3);
2718 /* Deal with pc-relative gunk. */
2719 value -= (sec->output_section->vma + sec->output_offset);
2720 value -= irel->r_offset;
2721 value += irel->r_addend;
2723 /* See if the value will fit in 8 bits, note the high value is
2724 0x7f + 1 as the target will be one bytes closer if we are
2726 if ((long) value < 0x80 && (long) value > -0x80)
2730 /* Get the opcode. */
2731 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2736 /* Note that we've changed the relocs, section contents, etc. */
2737 elf_section_data (sec)->relocs = internal_relocs;
2738 elf_section_data (sec)->this_hdr.contents = contents;
2739 symtab_hdr->contents = (unsigned char *) isymbuf;
2741 /* Fix the opcode. */
2742 bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1);
2744 /* Fix the relocation's type. */
2745 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2748 /* Delete one byte of data. */
2749 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2750 irel->r_offset + 1, 1))
2753 /* That will change things, so, we should relax again.
2754 Note that this is not required, and it may be slow. */
2759 /* Try to eliminate an unconditional 8 bit pc-relative branch
2760 which immediately follows a conditional 8 bit pc-relative
2761 branch around the unconditional branch.
2768 This happens when the bCC can't reach lab2 at assembly time,
2769 but due to other relaxations it can reach at link time. */
2770 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8)
2772 Elf_Internal_Rela *nrel;
2773 bfd_vma value = symval;
2776 /* Deal with pc-relative gunk. */
2777 value -= (sec->output_section->vma + sec->output_offset);
2778 value -= irel->r_offset;
2779 value += irel->r_addend;
2781 /* Do nothing if this reloc is the last byte in the section. */
2782 if (irel->r_offset == sec->_cooked_size)
2785 /* See if the next instruction is an unconditional pc-relative
2786 branch, more often than not this test will fail, so we
2787 test it first to speed things up. */
2788 code = bfd_get_8 (abfd, contents + irel->r_offset + 1);
2792 /* Also make sure the next relocation applies to the next
2793 instruction and that it's a pc-relative 8 bit branch. */
2796 || irel->r_offset + 2 != nrel->r_offset
2797 || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10300_PCREL8)
2800 /* Make sure our destination immediately follows the
2801 unconditional branch. */
2802 if (symval != (sec->output_section->vma + sec->output_offset
2803 + irel->r_offset + 3))
2806 /* Now make sure we are a conditional branch. This may not
2807 be necessary, but why take the chance.
2809 Note these checks assume that R_MN10300_PCREL8 relocs
2810 only occur on bCC and bCCx insns. If they occured
2811 elsewhere, we'd need to know the start of this insn
2812 for this check to be accurate. */
2813 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2814 if (code != 0xc0 && code != 0xc1 && code != 0xc2
2815 && code != 0xc3 && code != 0xc4 && code != 0xc5
2816 && code != 0xc6 && code != 0xc7 && code != 0xc8
2817 && code != 0xc9 && code != 0xe8 && code != 0xe9
2818 && code != 0xea && code != 0xeb)
2821 /* We also have to be sure there is no symbol/label
2822 at the unconditional branch. */
2823 if (mn10300_elf_symbol_address_p (abfd, sec, isymbuf,
2824 irel->r_offset + 1))
2827 /* Note that we've changed the relocs, section contents, etc. */
2828 elf_section_data (sec)->relocs = internal_relocs;
2829 elf_section_data (sec)->this_hdr.contents = contents;
2830 symtab_hdr->contents = (unsigned char *) isymbuf;
2832 /* Reverse the condition of the first branch. */
2878 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
2880 /* Set the reloc type and symbol for the first branch
2881 from the second branch. */
2882 irel->r_info = nrel->r_info;
2884 /* Make the reloc for the second branch a null reloc. */
2885 nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info),
2888 /* Delete two bytes of data. */
2889 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2890 irel->r_offset + 1, 2))
2893 /* That will change things, so, we should relax again.
2894 Note that this is not required, and it may be slow. */
2898 /* Try to turn a 24 immediate, displacement or absolute address
2899 into a 8 immediate, displacement or absolute address. */
2900 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_24)
2902 bfd_vma value = symval;
2903 value += irel->r_addend;
2905 /* See if the value will fit in 8 bits. */
2906 if ((long) value < 0x7f && (long) value > -0x80)
2910 /* AM33 insns which have 24 operands are 6 bytes long and
2911 will have 0xfd as the first byte. */
2913 /* Get the first opcode. */
2914 code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
2918 /* Get the second opcode. */
2919 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
2921 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
2922 equivalent instructions exists. */
2923 if (code != 0x6b && code != 0x7b
2924 && code != 0x8b && code != 0x9b
2925 && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
2926 || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
2927 || (code & 0x0f) == 0x0e))
2929 /* Not safe if the high bit is on as relaxing may
2930 move the value out of high mem and thus not fit
2931 in a signed 8bit value. This is currently over
2933 if ((value & 0x80) == 0)
2935 /* Note that we've changed the relocation contents,
2937 elf_section_data (sec)->relocs = internal_relocs;
2938 elf_section_data (sec)->this_hdr.contents = contents;
2939 symtab_hdr->contents = (unsigned char *) isymbuf;
2941 /* Fix the opcode. */
2942 bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3);
2943 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
2945 /* Fix the relocation's type. */
2947 ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2950 /* Delete two bytes of data. */
2951 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2952 irel->r_offset + 1, 2))
2955 /* That will change things, so, we should relax
2956 again. Note that this is not required, and it
2966 /* Try to turn a 32bit immediate, displacement or absolute address
2967 into a 16bit immediate, displacement or absolute address. */
2968 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32
2969 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32
2970 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32
2971 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32)
2973 bfd_vma value = symval;
2975 if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32)
2979 sgot = bfd_get_section_by_name (elf_hash_table (link_info)
2982 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32)
2984 value = sgot->output_offset;
2987 value += h->root.got.offset;
2989 value += (elf_local_got_offsets
2990 (abfd)[ELF32_R_SYM (irel->r_info)]);
2992 else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32)
2993 value -= sgot->output_section->vma;
2994 else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32)
2995 value = (sgot->output_section->vma
2996 - (sec->output_section->vma
2997 + sec->output_offset
3003 value += irel->r_addend;
3005 /* See if the value will fit in 24 bits.
3006 We allow any 16bit match here. We prune those we can't
3008 if ((long) value < 0x7fffff && (long) value > -0x800000)
3012 /* AM33 insns which have 32bit operands are 7 bytes long and
3013 will have 0xfe as the first byte. */
3015 /* Get the first opcode. */
3016 code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
3020 /* Get the second opcode. */
3021 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
3023 /* All the am33 32 -> 24 relaxing possibilities. */
3024 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
3025 equivalent instructions exists. */
3026 if (code != 0x6b && code != 0x7b
3027 && code != 0x8b && code != 0x9b
3028 && (ELF32_R_TYPE (irel->r_info)
3029 != (int) R_MN10300_GOTPC32)
3030 && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
3031 || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
3032 || (code & 0x0f) == 0x0e))
3034 /* Not safe if the high bit is on as relaxing may
3035 move the value out of high mem and thus not fit
3036 in a signed 16bit value. This is currently over
3038 if ((value & 0x8000) == 0)
3040 /* Note that we've changed the relocation contents,
3042 elf_section_data (sec)->relocs = internal_relocs;
3043 elf_section_data (sec)->this_hdr.contents = contents;
3044 symtab_hdr->contents = (unsigned char *) isymbuf;
3046 /* Fix the opcode. */
3047 bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3);
3048 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3050 /* Fix the relocation's type. */
3052 ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3053 (ELF32_R_TYPE (irel->r_info)
3054 == (int) R_MN10300_GOTOFF32)
3055 ? R_MN10300_GOTOFF24
3056 : (ELF32_R_TYPE (irel->r_info)
3057 == (int) R_MN10300_GOT32)
3061 /* Delete one byte of data. */
3062 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3063 irel->r_offset + 3, 1))
3066 /* That will change things, so, we should relax
3067 again. Note that this is not required, and it
3076 /* See if the value will fit in 16 bits.
3077 We allow any 16bit match here. We prune those we can't
3079 if ((long) value < 0x7fff && (long) value > -0x8000)
3083 /* Most insns which have 32bit operands are 6 bytes long;
3084 exceptions are pcrel insns and bit insns.
3086 We handle pcrel insns above. We don't bother trying
3087 to handle the bit insns here.
3089 The first byte of the remaining insns will be 0xfc. */
3091 /* Get the first opcode. */
3092 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
3097 /* Get the second opcode. */
3098 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3100 if ((code & 0xf0) < 0x80)
3101 switch (code & 0xf0)
3103 /* mov (d32,am),dn -> mov (d32,am),dn
3104 mov dm,(d32,am) -> mov dn,(d32,am)
3105 mov (d32,am),an -> mov (d32,am),an
3106 mov dm,(d32,am) -> mov dn,(d32,am)
3107 movbu (d32,am),dn -> movbu (d32,am),dn
3108 movbu dm,(d32,am) -> movbu dn,(d32,am)
3109 movhu (d32,am),dn -> movhu (d32,am),dn
3110 movhu dm,(d32,am) -> movhu dn,(d32,am) */
3119 /* Not safe if the high bit is on as relaxing may
3120 move the value out of high mem and thus not fit
3121 in a signed 16bit value. */
3123 && (value & 0x8000))
3126 /* Note that we've changed the relocation contents, etc. */
3127 elf_section_data (sec)->relocs = internal_relocs;
3128 elf_section_data (sec)->this_hdr.contents = contents;
3129 symtab_hdr->contents = (unsigned char *) isymbuf;
3131 /* Fix the opcode. */
3132 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3133 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3135 /* Fix the relocation's type. */
3136 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3137 (ELF32_R_TYPE (irel->r_info)
3138 == (int) R_MN10300_GOTOFF32)
3139 ? R_MN10300_GOTOFF16
3140 : (ELF32_R_TYPE (irel->r_info)
3141 == (int) R_MN10300_GOT32)
3143 : (ELF32_R_TYPE (irel->r_info)
3144 == (int) R_MN10300_GOTPC32)
3145 ? R_MN10300_GOTPC16 :
3148 /* Delete two bytes of data. */
3149 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3150 irel->r_offset + 2, 2))
3153 /* That will change things, so, we should relax again.
3154 Note that this is not required, and it may be slow. */
3158 else if ((code & 0xf0) == 0x80
3159 || (code & 0xf0) == 0x90)
3160 switch (code & 0xf3)
3162 /* mov dn,(abs32) -> mov dn,(abs16)
3163 movbu dn,(abs32) -> movbu dn,(abs16)
3164 movhu dn,(abs32) -> movhu dn,(abs16) */
3168 /* Note that we've changed the relocation contents, etc. */
3169 elf_section_data (sec)->relocs = internal_relocs;
3170 elf_section_data (sec)->this_hdr.contents = contents;
3171 symtab_hdr->contents = (unsigned char *) isymbuf;
3173 if ((code & 0xf3) == 0x81)
3174 code = 0x01 + (code & 0x0c);
3175 else if ((code & 0xf3) == 0x82)
3176 code = 0x02 + (code & 0x0c);
3177 else if ((code & 0xf3) == 0x83)
3178 code = 0x03 + (code & 0x0c);
3182 /* Fix the opcode. */
3183 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3185 /* Fix the relocation's type. */
3186 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3187 (ELF32_R_TYPE (irel->r_info)
3188 == (int) R_MN10300_GOTOFF32)
3189 ? R_MN10300_GOTOFF16
3190 : (ELF32_R_TYPE (irel->r_info)
3191 == (int) R_MN10300_GOT32)
3193 : (ELF32_R_TYPE (irel->r_info)
3194 == (int) R_MN10300_GOTPC32)
3195 ? R_MN10300_GOTPC16 :
3198 /* The opcode got shorter too, so we have to fix the
3199 addend and offset too! */
3200 irel->r_offset -= 1;
3202 /* Delete three bytes of data. */
3203 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3204 irel->r_offset + 1, 3))
3207 /* That will change things, so, we should relax again.
3208 Note that this is not required, and it may be slow. */
3212 /* mov am,(abs32) -> mov am,(abs16)
3213 mov am,(d32,sp) -> mov am,(d16,sp)
3214 mov dm,(d32,sp) -> mov dm,(d32,sp)
3215 movbu dm,(d32,sp) -> movbu dm,(d32,sp)
3216 movhu dm,(d32,sp) -> movhu dm,(d32,sp) */
3222 /* sp-based offsets are zero-extended. */
3223 if (code >= 0x90 && code <= 0x93
3227 /* Note that we've changed the relocation contents, etc. */
3228 elf_section_data (sec)->relocs = internal_relocs;
3229 elf_section_data (sec)->this_hdr.contents = contents;
3230 symtab_hdr->contents = (unsigned char *) isymbuf;
3232 /* Fix the opcode. */
3233 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3234 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3236 /* Fix the relocation's type. */
3237 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3238 (ELF32_R_TYPE (irel->r_info)
3239 == (int) R_MN10300_GOTOFF32)
3240 ? R_MN10300_GOTOFF16
3241 : (ELF32_R_TYPE (irel->r_info)
3242 == (int) R_MN10300_GOT32)
3244 : (ELF32_R_TYPE (irel->r_info)
3245 == (int) R_MN10300_GOTPC32)
3246 ? R_MN10300_GOTPC16 :
3249 /* Delete two bytes of data. */
3250 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3251 irel->r_offset + 2, 2))
3254 /* That will change things, so, we should relax again.
3255 Note that this is not required, and it may be slow. */
3259 else if ((code & 0xf0) < 0xf0)
3260 switch (code & 0xfc)
3262 /* mov imm32,dn -> mov imm16,dn
3263 mov imm32,an -> mov imm16,an
3264 mov (abs32),dn -> mov (abs16),dn
3265 movbu (abs32),dn -> movbu (abs16),dn
3266 movhu (abs32),dn -> movhu (abs16),dn */
3272 /* Not safe if the high bit is on as relaxing may
3273 move the value out of high mem and thus not fit
3274 in a signed 16bit value. */
3276 && (value & 0x8000))
3279 /* mov imm16, an zero-extends the immediate. */
3284 /* Note that we've changed the relocation contents, etc. */
3285 elf_section_data (sec)->relocs = internal_relocs;
3286 elf_section_data (sec)->this_hdr.contents = contents;
3287 symtab_hdr->contents = (unsigned char *) isymbuf;
3289 if ((code & 0xfc) == 0xcc)
3290 code = 0x2c + (code & 0x03);
3291 else if ((code & 0xfc) == 0xdc)
3292 code = 0x24 + (code & 0x03);
3293 else if ((code & 0xfc) == 0xa4)
3294 code = 0x30 + (code & 0x03);
3295 else if ((code & 0xfc) == 0xa8)
3296 code = 0x34 + (code & 0x03);
3297 else if ((code & 0xfc) == 0xac)
3298 code = 0x38 + (code & 0x03);
3302 /* Fix the opcode. */
3303 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3305 /* Fix the relocation's type. */
3306 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3307 (ELF32_R_TYPE (irel->r_info)
3308 == (int) R_MN10300_GOTOFF32)
3309 ? R_MN10300_GOTOFF16
3310 : (ELF32_R_TYPE (irel->r_info)
3311 == (int) R_MN10300_GOT32)
3313 : (ELF32_R_TYPE (irel->r_info)
3314 == (int) R_MN10300_GOTPC32)
3315 ? R_MN10300_GOTPC16 :
3318 /* The opcode got shorter too, so we have to fix the
3319 addend and offset too! */
3320 irel->r_offset -= 1;
3322 /* Delete three bytes of data. */
3323 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3324 irel->r_offset + 1, 3))
3327 /* That will change things, so, we should relax again.
3328 Note that this is not required, and it may be slow. */
3332 /* mov (abs32),an -> mov (abs16),an
3333 mov (d32,sp),an -> mov (d16,sp),an
3334 mov (d32,sp),dn -> mov (d16,sp),dn
3335 movbu (d32,sp),dn -> movbu (d16,sp),dn
3336 movhu (d32,sp),dn -> movhu (d16,sp),dn
3337 add imm32,dn -> add imm16,dn
3338 cmp imm32,dn -> cmp imm16,dn
3339 add imm32,an -> add imm16,an
3340 cmp imm32,an -> cmp imm16,an
3341 and imm32,dn -> and imm16,dn
3342 or imm32,dn -> or imm16,dn
3343 xor imm32,dn -> xor imm16,dn
3344 btst imm32,dn -> btst imm16,dn */
3360 /* cmp imm16, an zero-extends the immediate. */
3365 /* So do sp-based offsets. */
3366 if (code >= 0xb0 && code <= 0xb3
3370 /* Note that we've changed the relocation contents, etc. */
3371 elf_section_data (sec)->relocs = internal_relocs;
3372 elf_section_data (sec)->this_hdr.contents = contents;
3373 symtab_hdr->contents = (unsigned char *) isymbuf;
3375 /* Fix the opcode. */
3376 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3377 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3379 /* Fix the relocation's type. */
3380 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3381 (ELF32_R_TYPE (irel->r_info)
3382 == (int) R_MN10300_GOTOFF32)
3383 ? R_MN10300_GOTOFF16
3384 : (ELF32_R_TYPE (irel->r_info)
3385 == (int) R_MN10300_GOT32)
3387 : (ELF32_R_TYPE (irel->r_info)
3388 == (int) R_MN10300_GOTPC32)
3389 ? R_MN10300_GOTPC16 :
3392 /* Delete two bytes of data. */
3393 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3394 irel->r_offset + 2, 2))
3397 /* That will change things, so, we should relax again.
3398 Note that this is not required, and it may be slow. */
3402 else if (code == 0xfe)
3404 /* add imm32,sp -> add imm16,sp */
3406 /* Note that we've changed the relocation contents, etc. */
3407 elf_section_data (sec)->relocs = internal_relocs;
3408 elf_section_data (sec)->this_hdr.contents = contents;
3409 symtab_hdr->contents = (unsigned char *) isymbuf;
3411 /* Fix the opcode. */
3412 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3413 bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1);
3415 /* Fix the relocation's type. */
3416 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3417 (ELF32_R_TYPE (irel->r_info)
3418 == (int) R_MN10300_GOT32)
3420 : (ELF32_R_TYPE (irel->r_info)
3421 == (int) R_MN10300_GOTOFF32)
3422 ? R_MN10300_GOTOFF16
3423 : (ELF32_R_TYPE (irel->r_info)
3424 == (int) R_MN10300_GOTPC32)
3425 ? R_MN10300_GOTPC16 :
3428 /* Delete two bytes of data. */
3429 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3430 irel->r_offset + 2, 2))
3433 /* That will change things, so, we should relax again.
3434 Note that this is not required, and it may be slow. */
3443 && symtab_hdr->contents != (unsigned char *) isymbuf)
3445 if (! link_info->keep_memory)
3449 /* Cache the symbols for elf_link_input_bfd. */
3450 symtab_hdr->contents = (unsigned char *) isymbuf;
3454 if (contents != NULL
3455 && elf_section_data (sec)->this_hdr.contents != contents)
3457 if (! link_info->keep_memory)
3461 /* Cache the section contents for elf_link_input_bfd. */
3462 elf_section_data (sec)->this_hdr.contents = contents;
3466 if (internal_relocs != NULL
3467 && elf_section_data (sec)->relocs != internal_relocs)
3468 free (internal_relocs);
3474 && symtab_hdr->contents != (unsigned char *) isymbuf)
3476 if (contents != NULL
3477 && elf_section_data (section)->this_hdr.contents != contents)
3479 if (internal_relocs != NULL
3480 && elf_section_data (section)->relocs != internal_relocs)
3481 free (internal_relocs);
3486 /* Compute the stack size and movm arguments for the function
3487 referred to by HASH at address ADDR in section with
3488 contents CONTENTS, store the information in the hash table. */
3490 compute_function_info (abfd, hash, addr, contents)
3492 struct elf32_mn10300_link_hash_entry *hash;
3494 unsigned char *contents;
3496 unsigned char byte1, byte2;
3497 /* We only care about a very small subset of the possible prologue
3498 sequences here. Basically we look for:
3500 movm [d2,d3,a2,a3],sp (optional)
3501 add <size>,sp (optional, and only for sizes which fit in an unsigned
3504 If we find anything else, we quit. */
3506 /* Look for movm [regs],sp */
3507 byte1 = bfd_get_8 (abfd, contents + addr);
3508 byte2 = bfd_get_8 (abfd, contents + addr + 1);
3512 hash->movm_args = byte2;
3514 byte1 = bfd_get_8 (abfd, contents + addr);
3515 byte2 = bfd_get_8 (abfd, contents + addr + 1);
3518 /* Now figure out how much stack space will be allocated by the movm
3519 instruction. We need this kept separate from the function's normal
3521 if (hash->movm_args)
3524 if (hash->movm_args & 0x80)
3525 hash->movm_stack_size += 4;
3528 if (hash->movm_args & 0x40)
3529 hash->movm_stack_size += 4;
3532 if (hash->movm_args & 0x20)
3533 hash->movm_stack_size += 4;
3536 if (hash->movm_args & 0x10)
3537 hash->movm_stack_size += 4;
3539 /* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */
3540 if (hash->movm_args & 0x08)
3541 hash->movm_stack_size += 8 * 4;
3543 if (bfd_get_mach (abfd) == bfd_mach_am33
3544 || bfd_get_mach (abfd) == bfd_mach_am33_2)
3546 /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */
3547 if (hash->movm_args & 0x1)
3548 hash->movm_stack_size += 6 * 4;
3550 /* exreg1 space. e4, e5, e6, e7 */
3551 if (hash->movm_args & 0x2)
3552 hash->movm_stack_size += 4 * 4;
3554 /* exreg0 space. e2, e3 */
3555 if (hash->movm_args & 0x4)
3556 hash->movm_stack_size += 2 * 4;
3560 /* Now look for the two stack adjustment variants. */
3561 if (byte1 == 0xf8 && byte2 == 0xfe)
3563 int temp = bfd_get_8 (abfd, contents + addr + 2);
3564 temp = ((temp & 0xff) ^ (~0x7f)) + 0x80;
3566 hash->stack_size = -temp;
3568 else if (byte1 == 0xfa && byte2 == 0xfe)
3570 int temp = bfd_get_16 (abfd, contents + addr + 2);
3571 temp = ((temp & 0xffff) ^ (~0x7fff)) + 0x8000;
3575 hash->stack_size = temp;
3578 /* If the total stack to be allocated by the call instruction is more
3579 than 255 bytes, then we can't remove the stack adjustment by using
3580 "call" (we might still be able to remove the "movm" instruction. */
3581 if (hash->stack_size + hash->movm_stack_size > 255)
3582 hash->stack_size = 0;
3587 /* Delete some bytes from a section while relaxing. */
3590 mn10300_elf_relax_delete_bytes (abfd, sec, addr, count)
3596 Elf_Internal_Shdr *symtab_hdr;
3597 unsigned int sec_shndx;
3599 Elf_Internal_Rela *irel, *irelend;
3600 Elf_Internal_Rela *irelalign;
3602 Elf_Internal_Sym *isym, *isymend;
3603 struct elf_link_hash_entry **sym_hashes;
3604 struct elf_link_hash_entry **end_hashes;
3605 unsigned int symcount;
3607 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
3609 contents = elf_section_data (sec)->this_hdr.contents;
3611 /* The deletion must stop at the next ALIGN reloc for an aligment
3612 power larger than the number of bytes we are deleting. */
3615 toaddr = sec->_cooked_size;
3617 irel = elf_section_data (sec)->relocs;
3618 irelend = irel + sec->reloc_count;
3620 /* Actually delete the bytes. */
3621 memmove (contents + addr, contents + addr + count,
3622 (size_t) (toaddr - addr - count));
3623 sec->_cooked_size -= count;
3625 /* Adjust all the relocs. */
3626 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
3628 /* Get the new reloc address. */
3629 if ((irel->r_offset > addr
3630 && irel->r_offset < toaddr))
3631 irel->r_offset -= count;
3634 /* Adjust the local symbols defined in this section. */
3635 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3636 isym = (Elf_Internal_Sym *) symtab_hdr->contents;
3637 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
3639 if (isym->st_shndx == sec_shndx
3640 && isym->st_value > addr
3641 && isym->st_value < toaddr)
3642 isym->st_value -= count;
3645 /* Now adjust the global symbols defined in this section. */
3646 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
3647 - symtab_hdr->sh_info);
3648 sym_hashes = elf_sym_hashes (abfd);
3649 end_hashes = sym_hashes + symcount;
3650 for (; sym_hashes < end_hashes; sym_hashes++)
3652 struct elf_link_hash_entry *sym_hash = *sym_hashes;
3653 if ((sym_hash->root.type == bfd_link_hash_defined
3654 || sym_hash->root.type == bfd_link_hash_defweak)
3655 && sym_hash->root.u.def.section == sec
3656 && sym_hash->root.u.def.value > addr
3657 && sym_hash->root.u.def.value < toaddr)
3659 sym_hash->root.u.def.value -= count;
3666 /* Return TRUE if a symbol exists at the given address, else return
3669 mn10300_elf_symbol_address_p (abfd, sec, isym, addr)
3672 Elf_Internal_Sym *isym;
3675 Elf_Internal_Shdr *symtab_hdr;
3676 unsigned int sec_shndx;
3677 Elf_Internal_Sym *isymend;
3678 struct elf_link_hash_entry **sym_hashes;
3679 struct elf_link_hash_entry **end_hashes;
3680 unsigned int symcount;
3682 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
3684 /* Examine all the symbols. */
3685 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3686 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
3688 if (isym->st_shndx == sec_shndx
3689 && isym->st_value == addr)
3693 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
3694 - symtab_hdr->sh_info);
3695 sym_hashes = elf_sym_hashes (abfd);
3696 end_hashes = sym_hashes + symcount;
3697 for (; sym_hashes < end_hashes; sym_hashes++)
3699 struct elf_link_hash_entry *sym_hash = *sym_hashes;
3700 if ((sym_hash->root.type == bfd_link_hash_defined
3701 || sym_hash->root.type == bfd_link_hash_defweak)
3702 && sym_hash->root.u.def.section == sec
3703 && sym_hash->root.u.def.value == addr)
3710 /* This is a version of bfd_generic_get_relocated_section_contents
3711 which uses mn10300_elf_relocate_section. */
3714 mn10300_elf_get_relocated_section_contents (output_bfd, link_info, link_order,
3715 data, relocatable, symbols)
3717 struct bfd_link_info *link_info;
3718 struct bfd_link_order *link_order;
3720 bfd_boolean relocatable;
3723 Elf_Internal_Shdr *symtab_hdr;
3724 asection *input_section = link_order->u.indirect.section;
3725 bfd *input_bfd = input_section->owner;
3726 asection **sections = NULL;
3727 Elf_Internal_Rela *internal_relocs = NULL;
3728 Elf_Internal_Sym *isymbuf = NULL;
3730 /* We only need to handle the case of relaxing, or of having a
3731 particular set of section contents, specially. */
3733 || elf_section_data (input_section)->this_hdr.contents == NULL)
3734 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
3739 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3741 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
3742 (size_t) input_section->_raw_size);
3744 if ((input_section->flags & SEC_RELOC) != 0
3745 && input_section->reloc_count > 0)
3748 Elf_Internal_Sym *isym, *isymend;
3751 internal_relocs = (_bfd_elf_link_read_relocs
3752 (input_bfd, input_section, (PTR) NULL,
3753 (Elf_Internal_Rela *) NULL, FALSE));
3754 if (internal_relocs == NULL)
3757 if (symtab_hdr->sh_info != 0)
3759 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
3760 if (isymbuf == NULL)
3761 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
3762 symtab_hdr->sh_info, 0,
3764 if (isymbuf == NULL)
3768 amt = symtab_hdr->sh_info;
3769 amt *= sizeof (asection *);
3770 sections = (asection **) bfd_malloc (amt);
3771 if (sections == NULL && amt != 0)
3774 isymend = isymbuf + symtab_hdr->sh_info;
3775 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
3779 if (isym->st_shndx == SHN_UNDEF)
3780 isec = bfd_und_section_ptr;
3781 else if (isym->st_shndx == SHN_ABS)
3782 isec = bfd_abs_section_ptr;
3783 else if (isym->st_shndx == SHN_COMMON)
3784 isec = bfd_com_section_ptr;
3786 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
3791 if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd,
3792 input_section, data, internal_relocs,
3796 if (sections != NULL)
3798 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
3800 if (internal_relocs != elf_section_data (input_section)->relocs)
3801 free (internal_relocs);
3807 if (sections != NULL)
3809 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
3811 if (internal_relocs != NULL
3812 && internal_relocs != elf_section_data (input_section)->relocs)
3813 free (internal_relocs);
3817 /* Assorted hash table functions. */
3819 /* Initialize an entry in the link hash table. */
3821 /* Create an entry in an MN10300 ELF linker hash table. */
3823 static struct bfd_hash_entry *
3824 elf32_mn10300_link_hash_newfunc (entry, table, string)
3825 struct bfd_hash_entry *entry;
3826 struct bfd_hash_table *table;
3829 struct elf32_mn10300_link_hash_entry *ret =
3830 (struct elf32_mn10300_link_hash_entry *) entry;
3832 /* Allocate the structure if it has not already been allocated by a
3834 if (ret == (struct elf32_mn10300_link_hash_entry *) NULL)
3835 ret = ((struct elf32_mn10300_link_hash_entry *)
3836 bfd_hash_allocate (table,
3837 sizeof (struct elf32_mn10300_link_hash_entry)));
3838 if (ret == (struct elf32_mn10300_link_hash_entry *) NULL)
3839 return (struct bfd_hash_entry *) ret;
3841 /* Call the allocation method of the superclass. */
3842 ret = ((struct elf32_mn10300_link_hash_entry *)
3843 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
3845 if (ret != (struct elf32_mn10300_link_hash_entry *) NULL)
3847 ret->direct_calls = 0;
3848 ret->stack_size = 0;
3850 ret->movm_stack_size = 0;
3851 ret->pcrel_relocs_copied = NULL;
3855 return (struct bfd_hash_entry *) ret;
3858 /* Create an mn10300 ELF linker hash table. */
3860 static struct bfd_link_hash_table *
3861 elf32_mn10300_link_hash_table_create (abfd)
3864 struct elf32_mn10300_link_hash_table *ret;
3865 bfd_size_type amt = sizeof (struct elf32_mn10300_link_hash_table);
3867 ret = (struct elf32_mn10300_link_hash_table *) bfd_malloc (amt);
3868 if (ret == (struct elf32_mn10300_link_hash_table *) NULL)
3871 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
3872 elf32_mn10300_link_hash_newfunc))
3879 amt = sizeof (struct elf_link_hash_table);
3880 ret->static_hash_table
3881 = (struct elf32_mn10300_link_hash_table *) bfd_malloc (amt);
3882 if (ret->static_hash_table == NULL)
3888 if (! _bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd,
3889 elf32_mn10300_link_hash_newfunc))
3891 free (ret->static_hash_table);
3895 return &ret->root.root;
3898 /* Free an mn10300 ELF linker hash table. */
3901 elf32_mn10300_link_hash_table_free (hash)
3902 struct bfd_link_hash_table *hash;
3904 struct elf32_mn10300_link_hash_table *ret
3905 = (struct elf32_mn10300_link_hash_table *) hash;
3907 _bfd_generic_link_hash_table_free
3908 ((struct bfd_link_hash_table *) ret->static_hash_table);
3909 _bfd_generic_link_hash_table_free
3910 ((struct bfd_link_hash_table *) ret);
3913 static unsigned long
3914 elf_mn10300_mach (flags)
3917 switch (flags & EF_MN10300_MACH)
3919 case E_MN10300_MACH_MN10300:
3921 return bfd_mach_mn10300;
3923 case E_MN10300_MACH_AM33:
3924 return bfd_mach_am33;
3926 case E_MN10300_MACH_AM33_2:
3927 return bfd_mach_am33_2;
3931 /* The final processing done just before writing out a MN10300 ELF object
3932 file. This gets the MN10300 architecture right based on the machine
3936 _bfd_mn10300_elf_final_write_processing (abfd, linker)
3938 bfd_boolean linker ATTRIBUTE_UNUSED;
3942 switch (bfd_get_mach (abfd))
3945 case bfd_mach_mn10300:
3946 val = E_MN10300_MACH_MN10300;
3950 val = E_MN10300_MACH_AM33;
3953 case bfd_mach_am33_2:
3954 val = E_MN10300_MACH_AM33_2;
3958 elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH);
3959 elf_elfheader (abfd)->e_flags |= val;
3963 _bfd_mn10300_elf_object_p (abfd)
3966 bfd_default_set_arch_mach (abfd, bfd_arch_mn10300,
3967 elf_mn10300_mach (elf_elfheader (abfd)->e_flags));
3971 /* Merge backend specific data from an object file to the output
3972 object file when linking. */
3975 _bfd_mn10300_elf_merge_private_bfd_data (ibfd, obfd)
3979 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3980 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3983 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3984 && bfd_get_mach (obfd) < bfd_get_mach (ibfd))
3986 if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3987 bfd_get_mach (ibfd)))
3994 #define PLT0_ENTRY_SIZE 15
3995 #define PLT_ENTRY_SIZE 20
3996 #define PIC_PLT_ENTRY_SIZE 24
3998 static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] =
4000 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */
4001 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */
4002 0xf0, 0xf4, /* jmp (a0) */
4005 static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] =
4007 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */
4008 0xf0, 0xf4, /* jmp (a0) */
4009 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
4010 0xdc, 0, 0, 0, 0, /* jmp .plt0 */
4013 static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] =
4015 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */
4016 0xf0, 0xf4, /* jmp (a0) */
4017 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
4018 0xf8, 0x22, 8, /* mov (8,a2),a0 */
4019 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */
4020 0xf0, 0xf4, /* jmp (a0) */
4023 /* Return size of the first PLT entry. */
4024 #define elf_mn10300_sizeof_plt0(info) \
4025 (info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE)
4027 /* Return size of a PLT entry. */
4028 #define elf_mn10300_sizeof_plt(info) \
4029 (info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE)
4031 /* Return offset of the PLT0 address in an absolute PLT entry. */
4032 #define elf_mn10300_plt_plt0_offset(info) 16
4034 /* Return offset of the linker in PLT0 entry. */
4035 #define elf_mn10300_plt0_linker_offset(info) 2
4037 /* Return offset of the GOT id in PLT0 entry. */
4038 #define elf_mn10300_plt0_gotid_offset(info) 9
4040 /* Return offset of the temporary in PLT entry */
4041 #define elf_mn10300_plt_temp_offset(info) 8
4043 /* Return offset of the symbol in PLT entry. */
4044 #define elf_mn10300_plt_symbol_offset(info) 2
4046 /* Return offset of the relocation in PLT entry. */
4047 #define elf_mn10300_plt_reloc_offset(info) 11
4049 /* The name of the dynamic interpreter. This is put in the .interp
4052 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
4054 /* Create dynamic sections when linking against a dynamic object. */
4057 _bfd_mn10300_elf_create_dynamic_sections (abfd, info)
4059 struct bfd_link_info *info;
4063 const struct elf_backend_data * bed = get_elf_backend_data (abfd);
4066 switch (bed->s->arch_size)
4077 bfd_set_error (bfd_error_bad_value);
4081 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
4082 .rel[a].bss sections. */
4084 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4085 | SEC_LINKER_CREATED);
4087 s = bfd_make_section (abfd,
4088 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt");
4090 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
4091 || ! bfd_set_section_alignment (abfd, s, ptralign))
4094 if (! _bfd_mn10300_elf_create_got_section (abfd, info))
4098 const char * secname;
4103 for (sec = abfd->sections; sec; sec = sec->next)
4105 secflags = bfd_get_section_flags (abfd, sec);
4106 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
4107 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
4110 secname = bfd_get_section_name (abfd, sec);
4111 relname = (char *) bfd_malloc (strlen (secname) + 6);
4112 strcpy (relname, ".rela");
4113 strcat (relname, secname);
4115 s = bfd_make_section (abfd, relname);
4117 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
4118 || ! bfd_set_section_alignment (abfd, s, ptralign))
4123 if (bed->want_dynbss)
4125 /* The .dynbss section is a place to put symbols which are defined
4126 by dynamic objects, are referenced by regular objects, and are
4127 not functions. We must allocate space for them in the process
4128 image and use a R_*_COPY reloc to tell the dynamic linker to
4129 initialize them at run time. The linker script puts the .dynbss
4130 section into the .bss section of the final image. */
4131 s = bfd_make_section (abfd, ".dynbss");
4133 || ! bfd_set_section_flags (abfd, s, SEC_ALLOC))
4136 /* The .rel[a].bss section holds copy relocs. This section is not
4137 normally needed. We need to create it here, though, so that the
4138 linker will map it to an output section. We can't just create it
4139 only if we need it, because we will not know whether we need it
4140 until we have seen all the input files, and the first time the
4141 main linker code calls BFD after examining all the input files
4142 (size_dynamic_sections) the input sections have already been
4143 mapped to the output sections. If the section turns out not to
4144 be needed, we can discard it later. We will never need this
4145 section when generating a shared object, since they do not use
4149 s = bfd_make_section (abfd,
4150 (bed->default_use_rela_p
4151 ? ".rela.bss" : ".rel.bss"));
4153 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
4154 || ! bfd_set_section_alignment (abfd, s, ptralign))
4162 /* Adjust a symbol defined by a dynamic object and referenced by a
4163 regular object. The current definition is in some section of the
4164 dynamic object, but we're not including those sections. We have to
4165 change the definition to something the rest of the link can
4169 _bfd_mn10300_elf_adjust_dynamic_symbol (info, h)
4170 struct bfd_link_info * info;
4171 struct elf_link_hash_entry * h;
4175 unsigned int power_of_two;
4177 dynobj = elf_hash_table (info)->dynobj;
4179 /* Make sure we know what is going on here. */
4180 BFD_ASSERT (dynobj != NULL
4181 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
4182 || h->weakdef != NULL
4183 || ((h->elf_link_hash_flags
4184 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
4185 && (h->elf_link_hash_flags
4186 & ELF_LINK_HASH_REF_REGULAR) != 0
4187 && (h->elf_link_hash_flags
4188 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
4190 /* If this is a function, put it in the procedure linkage table. We
4191 will fill in the contents of the procedure linkage table later,
4192 when we know the address of the .got section. */
4193 if (h->type == STT_FUNC
4194 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
4197 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
4198 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0)
4200 /* This case can occur if we saw a PLT reloc in an input
4201 file, but the symbol was never referred to by a dynamic
4202 object. In such a case, we don't actually need to build
4203 a procedure linkage table, and we can just do a REL32
4205 BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0);
4209 /* Make sure this symbol is output as a dynamic symbol. */
4210 if (h->dynindx == -1)
4212 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4216 s = bfd_get_section_by_name (dynobj, ".plt");
4217 BFD_ASSERT (s != NULL);
4219 /* If this is the first .plt entry, make room for the special
4221 if (s->_raw_size == 0)
4222 s->_raw_size += elf_mn10300_sizeof_plt0 (info);
4224 /* If this symbol is not defined in a regular file, and we are
4225 not generating a shared library, then set the symbol to this
4226 location in the .plt. This is required to make function
4227 pointers compare as equal between the normal executable and
4228 the shared library. */
4230 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4232 h->root.u.def.section = s;
4233 h->root.u.def.value = s->_raw_size;
4236 h->plt.offset = s->_raw_size;
4238 /* Make room for this entry. */
4239 s->_raw_size += elf_mn10300_sizeof_plt (info);
4241 /* We also need to make an entry in the .got.plt section, which
4242 will be placed in the .got section by the linker script. */
4244 s = bfd_get_section_by_name (dynobj, ".got.plt");
4245 BFD_ASSERT (s != NULL);
4248 /* We also need to make an entry in the .rela.plt section. */
4250 s = bfd_get_section_by_name (dynobj, ".rela.plt");
4251 BFD_ASSERT (s != NULL);
4252 s->_raw_size += sizeof (Elf32_External_Rela);
4257 /* If this is a weak symbol, and there is a real definition, the
4258 processor independent code will have arranged for us to see the
4259 real definition first, and we can just use the same value. */
4260 if (h->weakdef != NULL)
4262 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
4263 || h->weakdef->root.type == bfd_link_hash_defweak);
4264 h->root.u.def.section = h->weakdef->root.u.def.section;
4265 h->root.u.def.value = h->weakdef->root.u.def.value;
4269 /* This is a reference to a symbol defined by a dynamic object which
4270 is not a function. */
4272 /* If we are creating a shared library, we must presume that the
4273 only references to the symbol are via the global offset table.
4274 For such cases we need not do anything here; the relocations will
4275 be handled correctly by relocate_section. */
4279 /* If there are no references to this symbol that do not use the
4280 GOT, we don't need to generate a copy reloc. */
4281 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
4284 /* We must allocate the symbol in our .dynbss section, which will
4285 become part of the .bss section of the executable. There will be
4286 an entry for this symbol in the .dynsym section. The dynamic
4287 object will contain position independent code, so all references
4288 from the dynamic object to this symbol will go through the global
4289 offset table. The dynamic linker will use the .dynsym entry to
4290 determine the address it must put in the global offset table, so
4291 both the dynamic object and the regular object will refer to the
4292 same memory location for the variable. */
4294 s = bfd_get_section_by_name (dynobj, ".dynbss");
4295 BFD_ASSERT (s != NULL);
4297 /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to
4298 copy the initial value out of the dynamic object and into the
4299 runtime process image. We need to remember the offset into the
4300 .rela.bss section we are going to use. */
4301 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4305 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
4306 BFD_ASSERT (srel != NULL);
4307 srel->_raw_size += sizeof (Elf32_External_Rela);
4308 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
4311 /* We need to figure out the alignment required for this symbol. I
4312 have no idea how ELF linkers handle this. */
4313 power_of_two = bfd_log2 (h->size);
4314 if (power_of_two > 3)
4317 /* Apply the required alignment. */
4318 s->_raw_size = BFD_ALIGN (s->_raw_size,
4319 (bfd_size_type) (1 << power_of_two));
4320 if (power_of_two > bfd_get_section_alignment (dynobj, s))
4322 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
4326 /* Define the symbol as being at this point in the section. */
4327 h->root.u.def.section = s;
4328 h->root.u.def.value = s->_raw_size;
4330 /* Increment the section size to make room for the symbol. */
4331 s->_raw_size += h->size;
4336 /* This function is called via elf32_mn10300_link_hash_traverse if we are
4337 creating a shared object with -Bsymbolic. It discards the space
4338 allocated to copy PC relative relocs against symbols which are
4339 defined in regular objects. We allocated space for them in the
4340 check_relocs routine, but we won't fill them in in the
4341 relocate_section routine. */
4344 _bfd_mn10300_elf_discard_copies (h, info)
4345 struct elf32_mn10300_link_hash_entry *h;
4346 struct bfd_link_info *info;
4348 struct elf_mn10300_pcrel_relocs_copied *s;
4350 /* If a symbol has been forced local or we have found a regular
4351 definition for the symbolic link case, then we won't be needing
4353 if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
4354 && ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
4357 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
4358 s->section->_raw_size -= s->count * sizeof (Elf32_External_Rel);
4364 /* Set the sizes of the dynamic sections. */
4367 _bfd_mn10300_elf_size_dynamic_sections (output_bfd, info)
4369 struct bfd_link_info * info;
4375 bfd_boolean reltext;
4377 dynobj = elf_hash_table (info)->dynobj;
4378 BFD_ASSERT (dynobj != NULL);
4380 if (elf_hash_table (info)->dynamic_sections_created)
4382 /* Set the contents of the .interp section to the interpreter. */
4383 if (info->executable)
4385 s = bfd_get_section_by_name (dynobj, ".interp");
4386 BFD_ASSERT (s != NULL);
4387 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
4388 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4393 /* We may have created entries in the .rela.got section.
4394 However, if we are not creating the dynamic sections, we will
4395 not actually use these entries. Reset the size of .rela.got,
4396 which will cause it to get stripped from the output file
4398 s = bfd_get_section_by_name (dynobj, ".rela.got");
4403 /* If this is a -Bsymbolic shared link, then we need to discard all
4404 PC relative relocs against symbols defined in a regular object.
4405 We allocated space for them in the check_relocs routine, but we
4406 will not fill them in in the relocate_section routine. */
4407 if (info->shared && info->symbolic)
4408 elf32_mn10300_link_hash_traverse (elf32_mn10300_hash_table (info),
4409 _bfd_mn10300_elf_discard_copies,
4412 /* The check_relocs and adjust_dynamic_symbol entry points have
4413 determined the sizes of the various dynamic sections. Allocate
4418 for (s = dynobj->sections; s != NULL; s = s->next)
4423 if ((s->flags & SEC_LINKER_CREATED) == 0)
4426 /* It's OK to base decisions on the section name, because none
4427 of the dynobj section names depend upon the input files. */
4428 name = bfd_get_section_name (dynobj, s);
4432 if (strcmp (name, ".plt") == 0)
4434 if (s->_raw_size == 0)
4435 /* Strip this section if we don't need it; see the
4439 /* Remember whether there is a PLT. */
4442 else if (strncmp (name, ".rela", 5) == 0)
4444 if (s->_raw_size == 0)
4446 /* If we don't need this section, strip it from the
4447 output file. This is mostly to handle .rela.bss and
4448 .rela.plt. We must create both sections in
4449 create_dynamic_sections, because they must be created
4450 before the linker maps input sections to output
4451 sections. The linker does that before
4452 adjust_dynamic_symbol is called, and it is that
4453 function which decides whether anything needs to go
4454 into these sections. */
4461 /* Remember whether there are any reloc sections other
4463 if (strcmp (name, ".rela.plt") != 0)
4465 const char * outname;
4469 /* If this relocation section applies to a read only
4470 section, then we probably need a DT_TEXTREL
4471 entry. The entries in the .rela.plt section
4472 really apply to the .got section, which we
4473 created ourselves and so know is not readonly. */
4474 outname = bfd_get_section_name (output_bfd,
4476 target = bfd_get_section_by_name (output_bfd, outname + 5);
4478 && (target->flags & SEC_READONLY) != 0
4479 && (target->flags & SEC_ALLOC) != 0)
4483 /* We use the reloc_count field as a counter if we need
4484 to copy relocs into the output file. */
4488 else if (strncmp (name, ".got", 4) != 0)
4489 /* It's not one of our sections, so don't allocate space. */
4494 _bfd_strip_section_from_output (info, s);
4498 /* Allocate memory for the section contents. We use bfd_zalloc
4499 here in case unused entries are not reclaimed before the
4500 section's contents are written out. This should not happen,
4501 but this way if it does, we get a R_MN10300_NONE reloc
4502 instead of garbage. */
4503 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
4504 if (s->contents == NULL && s->_raw_size != 0)
4508 if (elf_hash_table (info)->dynamic_sections_created)
4510 /* Add some entries to the .dynamic section. We fill in the
4511 values later, in _bfd_mn10300_elf_finish_dynamic_sections,
4512 but we must add the entries now so that we get the correct
4513 size for the .dynamic section. The DT_DEBUG entry is filled
4514 in by the dynamic linker and used by the debugger. */
4517 if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0))
4523 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)
4524 || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0)
4525 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
4526 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0))
4532 if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0)
4533 || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0)
4534 || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT,
4535 sizeof (Elf32_External_Rela)))
4541 if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0))
4549 /* Finish up dynamic symbol handling. We set the contents of various
4550 dynamic sections here. */
4553 _bfd_mn10300_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
4555 struct bfd_link_info * info;
4556 struct elf_link_hash_entry * h;
4557 Elf_Internal_Sym * sym;
4561 dynobj = elf_hash_table (info)->dynobj;
4563 if (h->plt.offset != (bfd_vma) -1)
4570 Elf_Internal_Rela rel;
4572 /* This symbol has an entry in the procedure linkage table. Set
4575 BFD_ASSERT (h->dynindx != -1);
4577 splt = bfd_get_section_by_name (dynobj, ".plt");
4578 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
4579 srel = bfd_get_section_by_name (dynobj, ".rela.plt");
4580 BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
4582 /* Get the index in the procedure linkage table which
4583 corresponds to this symbol. This is the index of this symbol
4584 in all the symbols for which we are making plt entries. The
4585 first entry in the procedure linkage table is reserved. */
4586 plt_index = ((h->plt.offset - elf_mn10300_sizeof_plt0 (info))
4587 / elf_mn10300_sizeof_plt (info));
4589 /* Get the offset into the .got table of the entry that
4590 corresponds to this function. Each .got entry is 4 bytes.
4591 The first three are reserved. */
4592 got_offset = (plt_index + 3) * 4;
4594 /* Fill in the entry in the procedure linkage table. */
4597 memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry,
4598 elf_mn10300_sizeof_plt (info));
4599 bfd_put_32 (output_bfd,
4600 (sgot->output_section->vma
4601 + sgot->output_offset
4603 (splt->contents + h->plt.offset
4604 + elf_mn10300_plt_symbol_offset (info)));
4606 bfd_put_32 (output_bfd,
4607 (1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)),
4608 (splt->contents + h->plt.offset
4609 + elf_mn10300_plt_plt0_offset (info)));
4613 memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry,
4614 elf_mn10300_sizeof_plt (info));
4616 bfd_put_32 (output_bfd, got_offset,
4617 (splt->contents + h->plt.offset
4618 + elf_mn10300_plt_symbol_offset (info)));
4621 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
4622 (splt->contents + h->plt.offset
4623 + elf_mn10300_plt_reloc_offset (info)));
4625 /* Fill in the entry in the global offset table. */
4626 bfd_put_32 (output_bfd,
4627 (splt->output_section->vma
4628 + splt->output_offset
4630 + elf_mn10300_plt_temp_offset (info)),
4631 sgot->contents + got_offset);
4633 /* Fill in the entry in the .rela.plt section. */
4634 rel.r_offset = (sgot->output_section->vma
4635 + sgot->output_offset
4637 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT);
4639 bfd_elf32_swap_reloca_out (output_bfd, &rel,
4640 (bfd_byte *) ((Elf32_External_Rela *) srel->contents
4643 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4644 /* Mark the symbol as undefined, rather than as defined in
4645 the .plt section. Leave the value alone. */
4646 sym->st_shndx = SHN_UNDEF;
4649 if (h->got.offset != (bfd_vma) -1)
4653 Elf_Internal_Rela rel;
4655 /* This symbol has an entry in the global offset table. Set it up. */
4657 sgot = bfd_get_section_by_name (dynobj, ".got");
4658 srel = bfd_get_section_by_name (dynobj, ".rela.got");
4659 BFD_ASSERT (sgot != NULL && srel != NULL);
4661 rel.r_offset = (sgot->output_section->vma
4662 + sgot->output_offset
4663 + (h->got.offset &~ 1));
4665 /* If this is a -Bsymbolic link, and the symbol is defined
4666 locally, we just want to emit a RELATIVE reloc. Likewise if
4667 the symbol was forced to be local because of a version file.
4668 The entry in the global offset table will already have been
4669 initialized in the relocate_section function. */
4671 && (info->symbolic || h->dynindx == -1)
4672 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
4674 rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
4675 rel.r_addend = (h->root.u.def.value
4676 + h->root.u.def.section->output_section->vma
4677 + h->root.u.def.section->output_offset);
4681 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
4682 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT);
4686 bfd_elf32_swap_reloca_out (output_bfd, &rel,
4687 (bfd_byte *) ((Elf32_External_Rela *) srel->contents
4688 + srel->reloc_count));
4689 ++ srel->reloc_count;
4692 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
4695 Elf_Internal_Rela rel;
4697 /* This symbol needs a copy reloc. Set it up. */
4698 BFD_ASSERT (h->dynindx != -1
4699 && (h->root.type == bfd_link_hash_defined
4700 || h->root.type == bfd_link_hash_defweak));
4702 s = bfd_get_section_by_name (h->root.u.def.section->owner,
4704 BFD_ASSERT (s != NULL);
4706 rel.r_offset = (h->root.u.def.value
4707 + h->root.u.def.section->output_section->vma
4708 + h->root.u.def.section->output_offset);
4709 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY);
4711 bfd_elf32_swap_reloca_out (output_bfd, &rel,
4712 (bfd_byte *) ((Elf32_External_Rela *) s->contents
4717 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4718 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
4719 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4720 sym->st_shndx = SHN_ABS;
4725 /* Finish up the dynamic sections. */
4728 _bfd_mn10300_elf_finish_dynamic_sections (output_bfd, info)
4730 struct bfd_link_info * info;
4736 dynobj = elf_hash_table (info)->dynobj;
4738 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
4739 BFD_ASSERT (sgot != NULL);
4740 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4742 if (elf_hash_table (info)->dynamic_sections_created)
4745 Elf32_External_Dyn * dyncon;
4746 Elf32_External_Dyn * dynconend;
4748 BFD_ASSERT (sdyn != NULL);
4750 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4751 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
4753 for (; dyncon < dynconend; dyncon++)
4755 Elf_Internal_Dyn dyn;
4759 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4773 s = bfd_get_section_by_name (output_bfd, name);
4774 BFD_ASSERT (s != NULL);
4775 dyn.d_un.d_ptr = s->vma;
4776 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4780 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
4781 BFD_ASSERT (s != NULL);
4782 if (s->_cooked_size != 0)
4783 dyn.d_un.d_val = s->_cooked_size;
4785 dyn.d_un.d_val = s->_raw_size;
4786 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4790 /* My reading of the SVR4 ABI indicates that the
4791 procedure linkage table relocs (DT_JMPREL) should be
4792 included in the overall relocs (DT_RELA). This is
4793 what Solaris does. However, UnixWare can not handle
4794 that case. Therefore, we override the DT_RELASZ entry
4795 here to make it not include the JMPREL relocs. Since
4796 the linker script arranges for .rela.plt to follow all
4797 other relocation sections, we don't have to worry
4798 about changing the DT_RELA entry. */
4799 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
4802 if (s->_cooked_size != 0)
4803 dyn.d_un.d_val -= s->_cooked_size;
4805 dyn.d_un.d_val -= s->_raw_size;
4807 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4812 /* Fill in the first entry in the procedure linkage table. */
4813 splt = bfd_get_section_by_name (dynobj, ".plt");
4814 if (splt && splt->_raw_size > 0)
4818 memcpy (splt->contents, elf_mn10300_pic_plt_entry,
4819 elf_mn10300_sizeof_plt (info));
4823 memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE);
4824 bfd_put_32 (output_bfd,
4825 sgot->output_section->vma + sgot->output_offset + 4,
4826 splt->contents + elf_mn10300_plt0_gotid_offset (info));
4827 bfd_put_32 (output_bfd,
4828 sgot->output_section->vma + sgot->output_offset + 8,
4829 splt->contents + elf_mn10300_plt0_linker_offset (info));
4832 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4833 really seem like the right value. */
4834 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
4838 /* Fill in the first three entries in the global offset table. */
4839 if (sgot->_raw_size > 0)
4842 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
4844 bfd_put_32 (output_bfd,
4845 sdyn->output_section->vma + sdyn->output_offset,
4847 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
4848 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
4851 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
4857 #define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec
4858 #define TARGET_LITTLE_NAME "elf32-mn10300"
4859 #define ELF_ARCH bfd_arch_mn10300
4860 #define ELF_MACHINE_CODE EM_MN10300
4861 #define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300
4862 #define ELF_MAXPAGESIZE 0x1000
4865 #define elf_info_to_howto mn10300_info_to_howto
4866 #define elf_info_to_howto_rel 0
4867 #define elf_backend_can_gc_sections 1
4868 #define elf_backend_rela_normal 1
4869 #define elf_backend_check_relocs mn10300_elf_check_relocs
4870 #define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook
4871 #define elf_backend_relocate_section mn10300_elf_relocate_section
4872 #define bfd_elf32_bfd_relax_section mn10300_elf_relax_section
4873 #define bfd_elf32_bfd_get_relocated_section_contents \
4874 mn10300_elf_get_relocated_section_contents
4875 #define bfd_elf32_bfd_link_hash_table_create \
4876 elf32_mn10300_link_hash_table_create
4877 #define bfd_elf32_bfd_link_hash_table_free \
4878 elf32_mn10300_link_hash_table_free
4880 #ifndef elf_symbol_leading_char
4881 #define elf_symbol_leading_char '_'
4884 /* So we can set bits in e_flags. */
4885 #define elf_backend_final_write_processing \
4886 _bfd_mn10300_elf_final_write_processing
4887 #define elf_backend_object_p _bfd_mn10300_elf_object_p
4889 #define bfd_elf32_bfd_merge_private_bfd_data \
4890 _bfd_mn10300_elf_merge_private_bfd_data
4892 #define elf_backend_can_gc_sections 1
4893 #define elf_backend_create_dynamic_sections \
4894 _bfd_mn10300_elf_create_dynamic_sections
4895 #define elf_backend_adjust_dynamic_symbol \
4896 _bfd_mn10300_elf_adjust_dynamic_symbol
4897 #define elf_backend_size_dynamic_sections \
4898 _bfd_mn10300_elf_size_dynamic_sections
4899 #define elf_backend_finish_dynamic_symbol \
4900 _bfd_mn10300_elf_finish_dynamic_symbol
4901 #define elf_backend_finish_dynamic_sections \
4902 _bfd_mn10300_elf_finish_dynamic_sections
4904 #define elf_backend_want_got_plt 1
4905 #define elf_backend_plt_readonly 1
4906 #define elf_backend_want_plt_sym 0
4907 #define elf_backend_got_header_size 12
4909 #include "elf32-target.h"