1 /* Matsushita 10300 specific support for 32-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3 2006, 2007, 2008, 2009, 2010 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 3 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., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
26 #include "elf/mn10300.h"
27 #include "libiberty.h"
29 /* The mn10300 linker needs to keep track of the number of relocs that
30 it decides to copy in check_relocs for each symbol. This is so
31 that it can discard PC relative relocs if it doesn't need them when
32 linking with -Bsymbolic. We store the information in a field
33 extending the regular ELF linker hash table. */
35 struct elf32_mn10300_link_hash_entry
37 /* The basic elf link hash table entry. */
38 struct elf_link_hash_entry root;
40 /* For function symbols, the number of times this function is
41 called directly (ie by name). */
42 unsigned int direct_calls;
44 /* For function symbols, the size of this function's stack
45 (if <= 255 bytes). We stuff this into "call" instructions
46 to this target when it's valid and profitable to do so.
48 This does not include stack allocated by movm! */
49 unsigned char stack_size;
51 /* For function symbols, arguments (if any) for movm instruction
52 in the prologue. We stuff this value into "call" instructions
53 to the target when it's valid and profitable to do so. */
54 unsigned char movm_args;
56 /* For function symbols, the amount of stack space that would be allocated
57 by the movm instruction. This is redundant with movm_args, but we
58 add it to the hash table to avoid computing it over and over. */
59 unsigned char movm_stack_size;
61 /* When set, convert all "call" instructions to this target into "calls"
63 #define MN10300_CONVERT_CALL_TO_CALLS 0x1
65 /* Used to mark functions which have had redundant parts of their
67 #define MN10300_DELETED_PROLOGUE_BYTES 0x2
70 /* Calculated value. */
74 /* We derive a hash table from the main elf linker hash table so
75 we can store state variables and a secondary hash table without
76 resorting to global variables. */
77 struct elf32_mn10300_link_hash_table
79 /* The main hash table. */
80 struct elf_link_hash_table root;
82 /* A hash table for static functions. We could derive a new hash table
83 instead of using the full elf32_mn10300_link_hash_table if we wanted
84 to save some memory. */
85 struct elf32_mn10300_link_hash_table *static_hash_table;
87 /* Random linker state flags. */
88 #define MN10300_HASH_ENTRIES_INITIALIZED 0x1
93 #define streq(a, b) (strcmp ((a),(b)) == 0)
96 /* For MN10300 linker hash table. */
98 /* Get the MN10300 ELF linker hash table from a link_info structure. */
100 #define elf32_mn10300_hash_table(p) \
101 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
102 == MN10300_ELF_DATA ? ((struct elf32_mn10300_link_hash_table *) ((p)->hash)) : NULL)
104 #define elf32_mn10300_link_hash_traverse(table, func, info) \
105 (elf_link_hash_traverse \
107 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
110 static reloc_howto_type elf_mn10300_howto_table[] =
112 /* Dummy relocation. Does nothing. */
113 HOWTO (R_MN10300_NONE,
119 complain_overflow_bitfield,
120 bfd_elf_generic_reloc,
126 /* Standard 32 bit reloc. */
133 complain_overflow_bitfield,
134 bfd_elf_generic_reloc,
140 /* Standard 16 bit reloc. */
147 complain_overflow_bitfield,
148 bfd_elf_generic_reloc,
154 /* Standard 8 bit reloc. */
161 complain_overflow_bitfield,
162 bfd_elf_generic_reloc,
168 /* Standard 32bit pc-relative reloc. */
169 HOWTO (R_MN10300_PCREL32,
175 complain_overflow_bitfield,
176 bfd_elf_generic_reloc,
182 /* Standard 16bit pc-relative reloc. */
183 HOWTO (R_MN10300_PCREL16,
189 complain_overflow_bitfield,
190 bfd_elf_generic_reloc,
196 /* Standard 8 pc-relative reloc. */
197 HOWTO (R_MN10300_PCREL8,
203 complain_overflow_bitfield,
204 bfd_elf_generic_reloc,
211 /* GNU extension to record C++ vtable hierarchy. */
212 HOWTO (R_MN10300_GNU_VTINHERIT, /* type */
214 0, /* size (0 = byte, 1 = short, 2 = long) */
216 FALSE, /* pc_relative */
218 complain_overflow_dont, /* complain_on_overflow */
219 NULL, /* special_function */
220 "R_MN10300_GNU_VTINHERIT", /* name */
221 FALSE, /* partial_inplace */
224 FALSE), /* pcrel_offset */
226 /* GNU extension to record C++ vtable member usage */
227 HOWTO (R_MN10300_GNU_VTENTRY, /* type */
229 0, /* size (0 = byte, 1 = short, 2 = long) */
231 FALSE, /* pc_relative */
233 complain_overflow_dont, /* complain_on_overflow */
234 NULL, /* special_function */
235 "R_MN10300_GNU_VTENTRY", /* name */
236 FALSE, /* partial_inplace */
239 FALSE), /* pcrel_offset */
241 /* Standard 24 bit reloc. */
248 complain_overflow_bitfield,
249 bfd_elf_generic_reloc,
255 HOWTO (R_MN10300_GOTPC32, /* type */
257 2, /* size (0 = byte, 1 = short, 2 = long) */
259 TRUE, /* pc_relative */
261 complain_overflow_bitfield, /* complain_on_overflow */
262 bfd_elf_generic_reloc, /* */
263 "R_MN10300_GOTPC32", /* name */
264 FALSE, /* partial_inplace */
265 0xffffffff, /* src_mask */
266 0xffffffff, /* dst_mask */
267 TRUE), /* pcrel_offset */
269 HOWTO (R_MN10300_GOTPC16, /* type */
271 1, /* size (0 = byte, 1 = short, 2 = long) */
273 TRUE, /* pc_relative */
275 complain_overflow_bitfield, /* complain_on_overflow */
276 bfd_elf_generic_reloc, /* */
277 "R_MN10300_GOTPC16", /* name */
278 FALSE, /* partial_inplace */
279 0xffff, /* src_mask */
280 0xffff, /* dst_mask */
281 TRUE), /* pcrel_offset */
283 HOWTO (R_MN10300_GOTOFF32, /* type */
285 2, /* size (0 = byte, 1 = short, 2 = long) */
287 FALSE, /* pc_relative */
289 complain_overflow_bitfield, /* complain_on_overflow */
290 bfd_elf_generic_reloc, /* */
291 "R_MN10300_GOTOFF32", /* name */
292 FALSE, /* partial_inplace */
293 0xffffffff, /* src_mask */
294 0xffffffff, /* dst_mask */
295 FALSE), /* pcrel_offset */
297 HOWTO (R_MN10300_GOTOFF24, /* type */
299 2, /* size (0 = byte, 1 = short, 2 = long) */
301 FALSE, /* pc_relative */
303 complain_overflow_bitfield, /* complain_on_overflow */
304 bfd_elf_generic_reloc, /* */
305 "R_MN10300_GOTOFF24", /* name */
306 FALSE, /* partial_inplace */
307 0xffffff, /* src_mask */
308 0xffffff, /* dst_mask */
309 FALSE), /* pcrel_offset */
311 HOWTO (R_MN10300_GOTOFF16, /* type */
313 1, /* size (0 = byte, 1 = short, 2 = long) */
315 FALSE, /* pc_relative */
317 complain_overflow_bitfield, /* complain_on_overflow */
318 bfd_elf_generic_reloc, /* */
319 "R_MN10300_GOTOFF16", /* name */
320 FALSE, /* partial_inplace */
321 0xffff, /* src_mask */
322 0xffff, /* dst_mask */
323 FALSE), /* pcrel_offset */
325 HOWTO (R_MN10300_PLT32, /* type */
327 2, /* size (0 = byte, 1 = short, 2 = long) */
329 TRUE, /* pc_relative */
331 complain_overflow_bitfield, /* complain_on_overflow */
332 bfd_elf_generic_reloc, /* */
333 "R_MN10300_PLT32", /* name */
334 FALSE, /* partial_inplace */
335 0xffffffff, /* src_mask */
336 0xffffffff, /* dst_mask */
337 TRUE), /* pcrel_offset */
339 HOWTO (R_MN10300_PLT16, /* type */
341 1, /* size (0 = byte, 1 = short, 2 = long) */
343 TRUE, /* pc_relative */
345 complain_overflow_bitfield, /* complain_on_overflow */
346 bfd_elf_generic_reloc, /* */
347 "R_MN10300_PLT16", /* name */
348 FALSE, /* partial_inplace */
349 0xffff, /* src_mask */
350 0xffff, /* dst_mask */
351 TRUE), /* pcrel_offset */
353 HOWTO (R_MN10300_GOT32, /* type */
355 2, /* size (0 = byte, 1 = short, 2 = long) */
357 FALSE, /* pc_relative */
359 complain_overflow_bitfield, /* complain_on_overflow */
360 bfd_elf_generic_reloc, /* */
361 "R_MN10300_GOT32", /* name */
362 FALSE, /* partial_inplace */
363 0xffffffff, /* src_mask */
364 0xffffffff, /* dst_mask */
365 FALSE), /* pcrel_offset */
367 HOWTO (R_MN10300_GOT24, /* type */
369 2, /* size (0 = byte, 1 = short, 2 = long) */
371 FALSE, /* pc_relative */
373 complain_overflow_bitfield, /* complain_on_overflow */
374 bfd_elf_generic_reloc, /* */
375 "R_MN10300_GOT24", /* name */
376 FALSE, /* partial_inplace */
377 0xffffffff, /* src_mask */
378 0xffffffff, /* dst_mask */
379 FALSE), /* pcrel_offset */
381 HOWTO (R_MN10300_GOT16, /* type */
383 1, /* size (0 = byte, 1 = short, 2 = long) */
385 FALSE, /* pc_relative */
387 complain_overflow_bitfield, /* complain_on_overflow */
388 bfd_elf_generic_reloc, /* */
389 "R_MN10300_GOT16", /* name */
390 FALSE, /* partial_inplace */
391 0xffffffff, /* src_mask */
392 0xffffffff, /* dst_mask */
393 FALSE), /* pcrel_offset */
395 HOWTO (R_MN10300_COPY, /* type */
397 2, /* size (0 = byte, 1 = short, 2 = long) */
399 FALSE, /* pc_relative */
401 complain_overflow_bitfield, /* complain_on_overflow */
402 bfd_elf_generic_reloc, /* */
403 "R_MN10300_COPY", /* name */
404 FALSE, /* partial_inplace */
405 0xffffffff, /* src_mask */
406 0xffffffff, /* dst_mask */
407 FALSE), /* pcrel_offset */
409 HOWTO (R_MN10300_GLOB_DAT, /* type */
411 2, /* size (0 = byte, 1 = short, 2 = long) */
413 FALSE, /* pc_relative */
415 complain_overflow_bitfield, /* complain_on_overflow */
416 bfd_elf_generic_reloc, /* */
417 "R_MN10300_GLOB_DAT", /* name */
418 FALSE, /* partial_inplace */
419 0xffffffff, /* src_mask */
420 0xffffffff, /* dst_mask */
421 FALSE), /* pcrel_offset */
423 HOWTO (R_MN10300_JMP_SLOT, /* type */
425 2, /* size (0 = byte, 1 = short, 2 = long) */
427 FALSE, /* pc_relative */
429 complain_overflow_bitfield, /* complain_on_overflow */
430 bfd_elf_generic_reloc, /* */
431 "R_MN10300_JMP_SLOT", /* name */
432 FALSE, /* partial_inplace */
433 0xffffffff, /* src_mask */
434 0xffffffff, /* dst_mask */
435 FALSE), /* pcrel_offset */
437 HOWTO (R_MN10300_RELATIVE, /* type */
439 2, /* size (0 = byte, 1 = short, 2 = long) */
441 FALSE, /* pc_relative */
443 complain_overflow_bitfield, /* complain_on_overflow */
444 bfd_elf_generic_reloc, /* */
445 "R_MN10300_RELATIVE", /* name */
446 FALSE, /* partial_inplace */
447 0xffffffff, /* src_mask */
448 0xffffffff, /* dst_mask */
449 FALSE), /* pcrel_offset */
461 HOWTO (R_MN10300_SYM_DIFF, /* type */
463 2, /* size (0 = byte, 1 = short, 2 = long) */
465 FALSE, /* pc_relative */
467 complain_overflow_dont,/* complain_on_overflow */
468 NULL, /* special handler. */
469 "R_MN10300_SYM_DIFF", /* name */
470 FALSE, /* partial_inplace */
471 0xffffffff, /* src_mask */
472 0xffffffff, /* dst_mask */
473 FALSE), /* pcrel_offset */
475 HOWTO (R_MN10300_ALIGN, /* type */
477 0, /* size (0 = byte, 1 = short, 2 = long) */
479 FALSE, /* pc_relative */
481 complain_overflow_dont,/* complain_on_overflow */
482 NULL, /* special handler. */
483 "R_MN10300_ALIGN", /* name */
484 FALSE, /* partial_inplace */
487 FALSE) /* pcrel_offset */
490 struct mn10300_reloc_map
492 bfd_reloc_code_real_type bfd_reloc_val;
493 unsigned char elf_reloc_val;
496 static const struct mn10300_reloc_map mn10300_reloc_map[] =
498 { BFD_RELOC_NONE, R_MN10300_NONE, },
499 { BFD_RELOC_32, R_MN10300_32, },
500 { BFD_RELOC_16, R_MN10300_16, },
501 { BFD_RELOC_8, R_MN10300_8, },
502 { BFD_RELOC_32_PCREL, R_MN10300_PCREL32, },
503 { BFD_RELOC_16_PCREL, R_MN10300_PCREL16, },
504 { BFD_RELOC_8_PCREL, R_MN10300_PCREL8, },
505 { BFD_RELOC_24, R_MN10300_24, },
506 { BFD_RELOC_VTABLE_INHERIT, R_MN10300_GNU_VTINHERIT },
507 { BFD_RELOC_VTABLE_ENTRY, R_MN10300_GNU_VTENTRY },
508 { BFD_RELOC_32_GOT_PCREL, R_MN10300_GOTPC32 },
509 { BFD_RELOC_16_GOT_PCREL, R_MN10300_GOTPC16 },
510 { BFD_RELOC_32_GOTOFF, R_MN10300_GOTOFF32 },
511 { BFD_RELOC_MN10300_GOTOFF24, R_MN10300_GOTOFF24 },
512 { BFD_RELOC_16_GOTOFF, R_MN10300_GOTOFF16 },
513 { BFD_RELOC_32_PLT_PCREL, R_MN10300_PLT32 },
514 { BFD_RELOC_16_PLT_PCREL, R_MN10300_PLT16 },
515 { BFD_RELOC_MN10300_GOT32, R_MN10300_GOT32 },
516 { BFD_RELOC_MN10300_GOT24, R_MN10300_GOT24 },
517 { BFD_RELOC_MN10300_GOT16, R_MN10300_GOT16 },
518 { BFD_RELOC_MN10300_COPY, R_MN10300_COPY },
519 { BFD_RELOC_MN10300_GLOB_DAT, R_MN10300_GLOB_DAT },
520 { BFD_RELOC_MN10300_JMP_SLOT, R_MN10300_JMP_SLOT },
521 { BFD_RELOC_MN10300_RELATIVE, R_MN10300_RELATIVE },
522 { BFD_RELOC_MN10300_SYM_DIFF, R_MN10300_SYM_DIFF },
523 { BFD_RELOC_MN10300_ALIGN, R_MN10300_ALIGN }
526 /* Create the GOT section. */
529 _bfd_mn10300_elf_create_got_section (bfd * abfd,
530 struct bfd_link_info * info)
535 struct elf_link_hash_entry * h;
536 const struct elf_backend_data * bed = get_elf_backend_data (abfd);
539 /* This function may be called more than once. */
540 if (bfd_get_section_by_name (abfd, ".got") != NULL)
543 switch (bed->s->arch_size)
554 bfd_set_error (bfd_error_bad_value);
558 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
559 | SEC_LINKER_CREATED);
562 pltflags |= SEC_CODE;
563 if (bed->plt_not_loaded)
564 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
565 if (bed->plt_readonly)
566 pltflags |= SEC_READONLY;
568 s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
570 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
573 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
575 if (bed->want_plt_sym)
577 h = _bfd_elf_define_linkage_sym (abfd, info, s,
578 "_PROCEDURE_LINKAGE_TABLE_");
579 elf_hash_table (info)->hplt = h;
584 s = bfd_make_section_with_flags (abfd, ".got", flags);
586 || ! bfd_set_section_alignment (abfd, s, ptralign))
589 if (bed->want_got_plt)
591 s = bfd_make_section_with_flags (abfd, ".got.plt", flags);
593 || ! bfd_set_section_alignment (abfd, s, ptralign))
597 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
598 (or .got.plt) section. We don't do this in the linker script
599 because we don't want to define the symbol if we are not creating
600 a global offset table. */
601 h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_");
602 elf_hash_table (info)->hgot = h;
606 /* The first bit of the global offset table is the header. */
607 s->size += bed->got_header_size;
612 static reloc_howto_type *
613 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
614 bfd_reloc_code_real_type code)
618 for (i = ARRAY_SIZE (mn10300_reloc_map); i--;)
619 if (mn10300_reloc_map[i].bfd_reloc_val == code)
620 return &elf_mn10300_howto_table[mn10300_reloc_map[i].elf_reloc_val];
625 static reloc_howto_type *
626 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
631 for (i = ARRAY_SIZE (elf_mn10300_howto_table); i--;)
632 if (elf_mn10300_howto_table[i].name != NULL
633 && strcasecmp (elf_mn10300_howto_table[i].name, r_name) == 0)
634 return elf_mn10300_howto_table + i;
639 /* Set the howto pointer for an MN10300 ELF reloc. */
642 mn10300_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
644 Elf_Internal_Rela *dst)
648 r_type = ELF32_R_TYPE (dst->r_info);
649 BFD_ASSERT (r_type < (unsigned int) R_MN10300_MAX);
650 cache_ptr->howto = elf_mn10300_howto_table + r_type;
653 /* Look through the relocs for a section during the first phase.
654 Since we don't do .gots or .plts, we just need to consider the
655 virtual table relocs for gc. */
658 mn10300_elf_check_relocs (bfd *abfd,
659 struct bfd_link_info *info,
661 const Elf_Internal_Rela *relocs)
663 bfd_boolean sym_diff_reloc_seen;
664 Elf_Internal_Shdr *symtab_hdr;
665 Elf_Internal_Sym * isymbuf = NULL;
666 struct elf_link_hash_entry **sym_hashes;
667 const Elf_Internal_Rela *rel;
668 const Elf_Internal_Rela *rel_end;
670 bfd_vma * local_got_offsets;
674 bfd_boolean result = FALSE;
680 if (info->relocatable)
683 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
684 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
685 sym_hashes = elf_sym_hashes (abfd);
687 dynobj = elf_hash_table (info)->dynobj;
688 local_got_offsets = elf_local_got_offsets (abfd);
689 rel_end = relocs + sec->reloc_count;
690 sym_diff_reloc_seen = FALSE;
692 for (rel = relocs; rel < rel_end; rel++)
694 struct elf_link_hash_entry *h;
695 unsigned long r_symndx;
698 r_symndx = ELF32_R_SYM (rel->r_info);
699 if (r_symndx < symtab_hdr->sh_info)
703 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
704 while (h->root.type == bfd_link_hash_indirect
705 || h->root.type == bfd_link_hash_warning)
706 h = (struct elf_link_hash_entry *) h->root.u.i.link;
709 r_type = ELF32_R_TYPE (rel->r_info);
711 /* Some relocs require a global offset table. */
716 case R_MN10300_GOT32:
717 case R_MN10300_GOT24:
718 case R_MN10300_GOT16:
719 case R_MN10300_GOTOFF32:
720 case R_MN10300_GOTOFF24:
721 case R_MN10300_GOTOFF16:
722 case R_MN10300_GOTPC32:
723 case R_MN10300_GOTPC16:
724 elf_hash_table (info)->dynobj = dynobj = abfd;
725 if (! _bfd_mn10300_elf_create_got_section (dynobj, info))
736 /* This relocation describes the C++ object vtable hierarchy.
737 Reconstruct it for later use during GC. */
738 case R_MN10300_GNU_VTINHERIT:
739 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
743 /* This relocation describes which C++ vtable entries are actually
744 used. Record for later use during GC. */
745 case R_MN10300_GNU_VTENTRY:
746 BFD_ASSERT (h != NULL);
748 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
752 case R_MN10300_GOT32:
753 case R_MN10300_GOT24:
754 case R_MN10300_GOT16:
755 /* This symbol requires a global offset table entry. */
759 sgot = bfd_get_section_by_name (dynobj, ".got");
760 BFD_ASSERT (sgot != NULL);
764 && (h != NULL || info->shared))
766 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
769 srelgot = bfd_make_section_with_flags (dynobj,
778 || ! bfd_set_section_alignment (dynobj, srelgot, 2))
785 if (h->got.offset != (bfd_vma) -1)
786 /* We have already allocated space in the .got. */
789 h->got.offset = sgot->size;
791 /* Make sure this symbol is output as a dynamic symbol. */
792 if (h->dynindx == -1)
794 if (! bfd_elf_link_record_dynamic_symbol (info, h))
798 srelgot->size += sizeof (Elf32_External_Rela);
802 /* This is a global offset table entry for a local
804 if (local_got_offsets == NULL)
809 size = symtab_hdr->sh_info * sizeof (bfd_vma);
810 local_got_offsets = bfd_alloc (abfd, size);
812 if (local_got_offsets == NULL)
815 elf_local_got_offsets (abfd) = local_got_offsets;
817 for (i = 0; i < symtab_hdr->sh_info; i++)
818 local_got_offsets[i] = (bfd_vma) -1;
821 if (local_got_offsets[r_symndx] != (bfd_vma) -1)
822 /* We have already allocated space in the .got. */
825 local_got_offsets[r_symndx] = sgot->size;
828 /* If we are generating a shared object, we need to
829 output a R_MN10300_RELATIVE reloc so that the dynamic
830 linker can adjust this GOT entry. */
831 srelgot->size += sizeof (Elf32_External_Rela);
837 case R_MN10300_PLT32:
838 case R_MN10300_PLT16:
839 /* This symbol requires a procedure linkage table entry. We
840 actually build the entry in adjust_dynamic_symbol,
841 because this might be a case of linking PIC code which is
842 never referenced by a dynamic object, in which case we
843 don't need to generate a procedure linkage table entry
846 /* If this is a local symbol, we resolve it directly without
847 creating a procedure linkage table entry. */
851 if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
852 || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN)
861 case R_MN10300_PCREL32:
862 case R_MN10300_PCREL16:
863 case R_MN10300_PCREL8:
868 case R_MN10300_SYM_DIFF:
869 sym_diff_reloc_seen = TRUE;
876 /* If we are creating a shared library, then we
877 need to copy the reloc into the shared library. */
879 && (sec->flags & SEC_ALLOC) != 0
880 /* Do not generate a dynamic reloc for a
881 reloc associated with a SYM_DIFF operation. */
882 && ! sym_diff_reloc_seen)
884 asection * sym_section = NULL;
886 /* Find the section containing the
887 symbol involved in the relocation. */
890 Elf_Internal_Sym * isym;
893 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
894 symtab_hdr->sh_info, 0,
898 isym = isymbuf + r_symndx;
899 /* All we care about is whether this local symbol is absolute. */
900 if (isym->st_shndx == SHN_ABS)
901 sym_section = bfd_abs_section_ptr;
906 if (h->root.type == bfd_link_hash_defined
907 || h->root.type == bfd_link_hash_defweak)
908 sym_section = h->root.u.def.section;
911 /* If the symbol is absolute then the relocation can
912 be resolved during linking and there is no need for
914 if (sym_section != bfd_abs_section_ptr)
916 /* When creating a shared object, we must copy these
917 reloc types into the output file. We create a reloc
918 section in dynobj and make room for this reloc. */
921 sreloc = _bfd_elf_make_dynamic_reloc_section
922 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
927 sreloc->size += sizeof (Elf32_External_Rela);
934 if (ELF32_R_TYPE (rel->r_info) != R_MN10300_SYM_DIFF)
935 sym_diff_reloc_seen = FALSE;
946 /* Return the section that should be marked against GC for a given
950 mn10300_elf_gc_mark_hook (asection *sec,
951 struct bfd_link_info *info,
952 Elf_Internal_Rela *rel,
953 struct elf_link_hash_entry *h,
954 Elf_Internal_Sym *sym)
957 switch (ELF32_R_TYPE (rel->r_info))
959 case R_MN10300_GNU_VTINHERIT:
960 case R_MN10300_GNU_VTENTRY:
964 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
967 /* Perform a relocation as part of a final link. */
969 static bfd_reloc_status_type
970 mn10300_elf_final_link_relocate (reloc_howto_type *howto,
972 bfd *output_bfd ATTRIBUTE_UNUSED,
973 asection *input_section,
978 struct elf_link_hash_entry * h,
979 unsigned long symndx,
980 struct bfd_link_info *info,
981 asection *sym_sec ATTRIBUTE_UNUSED,
982 int is_local ATTRIBUTE_UNUSED)
984 static asection * sym_diff_section;
985 static bfd_vma sym_diff_value;
986 bfd_boolean is_sym_diff_reloc;
987 unsigned long r_type = howto->type;
988 bfd_byte * hit_data = contents + offset;
994 dynobj = elf_hash_table (info)->dynobj;
1004 case R_MN10300_PCREL8:
1005 case R_MN10300_PCREL16:
1006 case R_MN10300_PCREL32:
1007 case R_MN10300_GOTOFF32:
1008 case R_MN10300_GOTOFF24:
1009 case R_MN10300_GOTOFF16:
1011 && (input_section->flags & SEC_ALLOC) != 0
1013 && ! SYMBOL_REFERENCES_LOCAL (info, h))
1014 return bfd_reloc_dangerous;
1017 is_sym_diff_reloc = FALSE;
1018 if (sym_diff_section != NULL)
1020 BFD_ASSERT (sym_diff_section == input_section);
1028 value -= sym_diff_value;
1029 /* If we are computing a 32-bit value for the location lists
1030 and the result is 0 then we add one to the value. A zero
1031 value can result because of linker relaxation deleteing
1032 prologue instructions and using a value of 1 (for the begin
1033 and end offsets in the location list entry) results in a
1034 nul entry which does not prevent the following entries from
1036 if (r_type == R_MN10300_32
1038 && strcmp (input_section->name, ".debug_loc") == 0)
1040 sym_diff_section = NULL;
1041 is_sym_diff_reloc = TRUE;
1045 sym_diff_section = NULL;
1052 case R_MN10300_SYM_DIFF:
1053 BFD_ASSERT (addend == 0);
1054 /* Cache the input section and value.
1055 The offset is unreliable, since relaxation may
1056 have reduced the following reloc's offset. */
1057 sym_diff_section = input_section;
1058 sym_diff_value = value;
1059 return bfd_reloc_ok;
1061 case R_MN10300_ALIGN:
1062 case R_MN10300_NONE:
1063 return bfd_reloc_ok;
1067 /* Do not generate relocs when an R_MN10300_32 has been used
1068 with an R_MN10300_SYM_DIFF to compute a difference of two
1070 && is_sym_diff_reloc == FALSE
1071 /* Also, do not generate a reloc when the symbol associated
1072 with the R_MN10300_32 reloc is absolute - there is no
1073 need for a run time computation in this case. */
1074 && sym_sec != bfd_abs_section_ptr
1075 /* If the section is not going to be allocated at load time
1076 then there is no need to generate relocs for it. */
1077 && (input_section->flags & SEC_ALLOC) != 0)
1079 Elf_Internal_Rela outrel;
1080 bfd_boolean skip, relocate;
1082 /* When generating a shared object, these relocations are
1083 copied into the output file to be resolved at run
1087 sreloc = _bfd_elf_get_dynamic_reloc_section
1088 (input_bfd, input_section, /*rela?*/ TRUE);
1095 outrel.r_offset = _bfd_elf_section_offset (input_bfd, info,
1096 input_section, offset);
1097 if (outrel.r_offset == (bfd_vma) -1)
1100 outrel.r_offset += (input_section->output_section->vma
1101 + input_section->output_offset);
1105 memset (&outrel, 0, sizeof outrel);
1110 /* h->dynindx may be -1 if this symbol was marked to
1113 || SYMBOL_REFERENCES_LOCAL (info, h))
1116 outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
1117 outrel.r_addend = value + addend;
1121 BFD_ASSERT (h->dynindx != -1);
1123 outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_32);
1124 outrel.r_addend = value + addend;
1128 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
1129 (bfd_byte *) (((Elf32_External_Rela *) sreloc->contents)
1130 + sreloc->reloc_count));
1131 ++sreloc->reloc_count;
1133 /* If this reloc is against an external symbol, we do
1134 not want to fiddle with the addend. Otherwise, we
1135 need to include the symbol value so that it becomes
1136 an addend for the dynamic reloc. */
1138 return bfd_reloc_ok;
1141 bfd_put_32 (input_bfd, value, hit_data);
1142 return bfd_reloc_ok;
1147 if ((long) value > 0x7fffff || (long) value < -0x800000)
1148 return bfd_reloc_overflow;
1150 bfd_put_8 (input_bfd, value & 0xff, hit_data);
1151 bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
1152 bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
1153 return bfd_reloc_ok;
1158 if ((long) value > 0x7fff || (long) value < -0x8000)
1159 return bfd_reloc_overflow;
1161 bfd_put_16 (input_bfd, value, hit_data);
1162 return bfd_reloc_ok;
1167 if ((long) value > 0x7f || (long) value < -0x80)
1168 return bfd_reloc_overflow;
1170 bfd_put_8 (input_bfd, value, hit_data);
1171 return bfd_reloc_ok;
1173 case R_MN10300_PCREL8:
1174 value -= (input_section->output_section->vma
1175 + input_section->output_offset);
1179 if ((long) value > 0x7f || (long) value < -0x80)
1180 return bfd_reloc_overflow;
1182 bfd_put_8 (input_bfd, value, hit_data);
1183 return bfd_reloc_ok;
1185 case R_MN10300_PCREL16:
1186 value -= (input_section->output_section->vma
1187 + input_section->output_offset);
1191 if ((long) value > 0x7fff || (long) value < -0x8000)
1192 return bfd_reloc_overflow;
1194 bfd_put_16 (input_bfd, value, hit_data);
1195 return bfd_reloc_ok;
1197 case R_MN10300_PCREL32:
1198 value -= (input_section->output_section->vma
1199 + input_section->output_offset);
1203 bfd_put_32 (input_bfd, value, hit_data);
1204 return bfd_reloc_ok;
1206 case R_MN10300_GNU_VTINHERIT:
1207 case R_MN10300_GNU_VTENTRY:
1208 return bfd_reloc_ok;
1210 case R_MN10300_GOTPC32:
1211 /* Use global offset table as symbol value. */
1212 value = bfd_get_section_by_name (dynobj,
1213 ".got")->output_section->vma;
1214 value -= (input_section->output_section->vma
1215 + input_section->output_offset);
1219 bfd_put_32 (input_bfd, value, hit_data);
1220 return bfd_reloc_ok;
1222 case R_MN10300_GOTPC16:
1223 /* Use global offset table as symbol value. */
1224 value = bfd_get_section_by_name (dynobj,
1225 ".got")->output_section->vma;
1226 value -= (input_section->output_section->vma
1227 + input_section->output_offset);
1231 if ((long) value > 0x7fff || (long) value < -0x8000)
1232 return bfd_reloc_overflow;
1234 bfd_put_16 (input_bfd, value, hit_data);
1235 return bfd_reloc_ok;
1237 case R_MN10300_GOTOFF32:
1238 value -= bfd_get_section_by_name (dynobj,
1239 ".got")->output_section->vma;
1242 bfd_put_32 (input_bfd, value, hit_data);
1243 return bfd_reloc_ok;
1245 case R_MN10300_GOTOFF24:
1246 value -= bfd_get_section_by_name (dynobj,
1247 ".got")->output_section->vma;
1250 if ((long) value > 0x7fffff || (long) value < -0x800000)
1251 return bfd_reloc_overflow;
1253 bfd_put_8 (input_bfd, value, hit_data);
1254 bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
1255 bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
1256 return bfd_reloc_ok;
1258 case R_MN10300_GOTOFF16:
1259 value -= bfd_get_section_by_name (dynobj,
1260 ".got")->output_section->vma;
1263 if ((long) value > 0x7fff || (long) value < -0x8000)
1264 return bfd_reloc_overflow;
1266 bfd_put_16 (input_bfd, value, hit_data);
1267 return bfd_reloc_ok;
1269 case R_MN10300_PLT32:
1271 && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
1272 && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
1273 && h->plt.offset != (bfd_vma) -1)
1275 splt = bfd_get_section_by_name (dynobj, ".plt");
1277 value = (splt->output_section->vma
1278 + splt->output_offset
1279 + h->plt.offset) - value;
1282 value -= (input_section->output_section->vma
1283 + input_section->output_offset);
1287 bfd_put_32 (input_bfd, value, hit_data);
1288 return bfd_reloc_ok;
1290 case R_MN10300_PLT16:
1292 && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
1293 && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
1294 && h->plt.offset != (bfd_vma) -1)
1296 splt = bfd_get_section_by_name (dynobj, ".plt");
1298 value = (splt->output_section->vma
1299 + splt->output_offset
1300 + h->plt.offset) - value;
1303 value -= (input_section->output_section->vma
1304 + input_section->output_offset);
1308 if ((long) value > 0x7fff || (long) value < -0x8000)
1309 return bfd_reloc_overflow;
1311 bfd_put_16 (input_bfd, value, hit_data);
1312 return bfd_reloc_ok;
1314 case R_MN10300_GOT32:
1315 case R_MN10300_GOT24:
1316 case R_MN10300_GOT16:
1318 sgot = bfd_get_section_by_name (dynobj, ".got");
1324 off = h->got.offset;
1325 BFD_ASSERT (off != (bfd_vma) -1);
1327 if (! elf_hash_table (info)->dynamic_sections_created
1328 || SYMBOL_REFERENCES_LOCAL (info, h))
1329 /* This is actually a static link, or it is a
1330 -Bsymbolic link and the symbol is defined
1331 locally, or the symbol was forced to be local
1332 because of a version file. We must initialize
1333 this entry in the global offset table.
1335 When doing a dynamic link, we create a .rela.got
1336 relocation entry to initialize the value. This
1337 is done in the finish_dynamic_symbol routine. */
1338 bfd_put_32 (output_bfd, value,
1339 sgot->contents + off);
1341 value = sgot->output_offset + off;
1347 off = elf_local_got_offsets (input_bfd)[symndx];
1349 bfd_put_32 (output_bfd, value, sgot->contents + off);
1354 Elf_Internal_Rela outrel;
1356 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1357 BFD_ASSERT (srelgot != NULL);
1359 outrel.r_offset = (sgot->output_section->vma
1360 + sgot->output_offset
1362 outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
1363 outrel.r_addend = value;
1364 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
1365 (bfd_byte *) (((Elf32_External_Rela *)
1367 + srelgot->reloc_count));
1368 ++ srelgot->reloc_count;
1371 value = sgot->output_offset + off;
1377 if (r_type == R_MN10300_GOT32)
1379 bfd_put_32 (input_bfd, value, hit_data);
1380 return bfd_reloc_ok;
1382 else if (r_type == R_MN10300_GOT24)
1384 if ((long) value > 0x7fffff || (long) value < -0x800000)
1385 return bfd_reloc_overflow;
1387 bfd_put_8 (input_bfd, value & 0xff, hit_data);
1388 bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
1389 bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
1390 return bfd_reloc_ok;
1392 else if (r_type == R_MN10300_GOT16)
1394 if ((long) value > 0x7fff || (long) value < -0x8000)
1395 return bfd_reloc_overflow;
1397 bfd_put_16 (input_bfd, value, hit_data);
1398 return bfd_reloc_ok;
1403 return bfd_reloc_notsupported;
1407 /* Relocate an MN10300 ELF section. */
1410 mn10300_elf_relocate_section (bfd *output_bfd,
1411 struct bfd_link_info *info,
1413 asection *input_section,
1415 Elf_Internal_Rela *relocs,
1416 Elf_Internal_Sym *local_syms,
1417 asection **local_sections)
1419 Elf_Internal_Shdr *symtab_hdr;
1420 struct elf_link_hash_entry **sym_hashes;
1421 Elf_Internal_Rela *rel, *relend;
1423 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1424 sym_hashes = elf_sym_hashes (input_bfd);
1427 relend = relocs + input_section->reloc_count;
1428 for (; rel < relend; rel++)
1431 reloc_howto_type *howto;
1432 unsigned long r_symndx;
1433 Elf_Internal_Sym *sym;
1435 struct elf32_mn10300_link_hash_entry *h;
1437 bfd_reloc_status_type r;
1439 r_symndx = ELF32_R_SYM (rel->r_info);
1440 r_type = ELF32_R_TYPE (rel->r_info);
1441 howto = elf_mn10300_howto_table + r_type;
1443 /* Just skip the vtable gc relocs. */
1444 if (r_type == R_MN10300_GNU_VTINHERIT
1445 || r_type == R_MN10300_GNU_VTENTRY)
1451 if (r_symndx < symtab_hdr->sh_info)
1453 sym = local_syms + r_symndx;
1454 sec = local_sections[r_symndx];
1455 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1459 bfd_boolean unresolved_reloc;
1461 struct elf_link_hash_entry *hh;
1463 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1464 r_symndx, symtab_hdr, sym_hashes,
1465 hh, sec, relocation,
1466 unresolved_reloc, warned);
1468 h = (struct elf32_mn10300_link_hash_entry *) hh;
1470 if ((h->root.root.type == bfd_link_hash_defined
1471 || h->root.root.type == bfd_link_hash_defweak)
1472 && ( r_type == R_MN10300_GOTPC32
1473 || r_type == R_MN10300_GOTPC16
1474 || (( r_type == R_MN10300_PLT32
1475 || r_type == R_MN10300_PLT16)
1476 && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
1477 && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
1478 && h->root.plt.offset != (bfd_vma) -1)
1479 || (( r_type == R_MN10300_GOT32
1480 || r_type == R_MN10300_GOT24
1481 || r_type == R_MN10300_GOT16)
1482 && elf_hash_table (info)->dynamic_sections_created
1483 && !SYMBOL_REFERENCES_LOCAL (info, hh))
1484 || (r_type == R_MN10300_32
1485 /* _32 relocs in executables force _COPY relocs,
1486 such that the address of the symbol ends up
1488 && !info->executable
1489 && !SYMBOL_REFERENCES_LOCAL (info, hh)
1490 && ((input_section->flags & SEC_ALLOC) != 0
1491 /* DWARF will emit R_MN10300_32 relocations
1492 in its sections against symbols defined
1493 externally in shared libraries. We can't
1494 do anything with them here. */
1495 || ((input_section->flags & SEC_DEBUGGING) != 0
1496 && h->root.def_dynamic)))))
1497 /* In these cases, we don't need the relocation
1498 value. We check specially because in some
1499 obscure cases sec->output_section will be NULL. */
1502 else if (!info->relocatable && unresolved_reloc)
1503 (*_bfd_error_handler)
1504 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
1507 (long) rel->r_offset,
1509 h->root.root.root.string);
1512 if (sec != NULL && elf_discarded_section (sec))
1513 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
1514 rel, relend, howto, contents);
1516 if (info->relocatable)
1519 r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd,
1521 contents, rel->r_offset,
1522 relocation, rel->r_addend,
1523 (struct elf_link_hash_entry *) h,
1525 info, sec, h == NULL);
1527 if (r != bfd_reloc_ok)
1530 const char *msg = NULL;
1533 name = h->root.root.root.string;
1536 name = (bfd_elf_string_from_elf_section
1537 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1538 if (name == NULL || *name == '\0')
1539 name = bfd_section_name (input_bfd, sec);
1544 case bfd_reloc_overflow:
1545 if (! ((*info->callbacks->reloc_overflow)
1546 (info, (h ? &h->root.root : NULL), name,
1547 howto->name, (bfd_vma) 0, input_bfd,
1548 input_section, rel->r_offset)))
1552 case bfd_reloc_undefined:
1553 if (! ((*info->callbacks->undefined_symbol)
1554 (info, name, input_bfd, input_section,
1555 rel->r_offset, TRUE)))
1559 case bfd_reloc_outofrange:
1560 msg = _("internal error: out of range error");
1563 case bfd_reloc_notsupported:
1564 msg = _("internal error: unsupported relocation error");
1567 case bfd_reloc_dangerous:
1568 if (r_type == R_MN10300_PCREL32)
1569 msg = _("error: inappropriate relocation type for shared"
1570 " library (did you forget -fpic?)");
1572 msg = _("internal error: suspicious relocation type used"
1573 " in shared library");
1577 msg = _("internal error: unknown error");
1581 if (!((*info->callbacks->warning)
1582 (info, msg, name, input_bfd, input_section,
1593 /* Finish initializing one hash table entry. */
1596 elf32_mn10300_finish_hash_table_entry (struct bfd_hash_entry *gen_entry,
1599 struct elf32_mn10300_link_hash_entry *entry;
1600 struct bfd_link_info *link_info = (struct bfd_link_info *) in_args;
1601 unsigned int byte_count = 0;
1603 entry = (struct elf32_mn10300_link_hash_entry *) gen_entry;
1605 if (entry->root.root.type == bfd_link_hash_warning)
1606 entry = (struct elf32_mn10300_link_hash_entry *) entry->root.root.u.i.link;
1608 /* If we already know we want to convert "call" to "calls" for calls
1609 to this symbol, then return now. */
1610 if (entry->flags == MN10300_CONVERT_CALL_TO_CALLS)
1613 /* If there are no named calls to this symbol, or there's nothing we
1614 can move from the function itself into the "call" instruction,
1615 then note that all "call" instructions should be converted into
1616 "calls" instructions and return. If a symbol is available for
1617 dynamic symbol resolution (overridable or overriding), avoid
1618 custom calling conventions. */
1619 if (entry->direct_calls == 0
1620 || (entry->stack_size == 0 && entry->movm_args == 0)
1621 || (elf_hash_table (link_info)->dynamic_sections_created
1622 && ELF_ST_VISIBILITY (entry->root.other) != STV_INTERNAL
1623 && ELF_ST_VISIBILITY (entry->root.other) != STV_HIDDEN))
1625 /* Make a note that we should convert "call" instructions to "calls"
1626 instructions for calls to this symbol. */
1627 entry->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1631 /* We may be able to move some instructions from the function itself into
1632 the "call" instruction. Count how many bytes we might be able to
1633 eliminate in the function itself. */
1635 /* A movm instruction is two bytes. */
1636 if (entry->movm_args)
1639 /* Count the insn to allocate stack space too. */
1640 if (entry->stack_size > 0)
1642 if (entry->stack_size <= 128)
1648 /* If using "call" will result in larger code, then turn all
1649 the associated "call" instructions into "calls" instructions. */
1650 if (byte_count < entry->direct_calls)
1651 entry->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1653 /* This routine never fails. */
1657 /* Used to count hash table entries. */
1660 elf32_mn10300_count_hash_table_entries (struct bfd_hash_entry *gen_entry ATTRIBUTE_UNUSED,
1663 int *count = (int *) in_args;
1669 /* Used to enumerate hash table entries into a linear array. */
1672 elf32_mn10300_list_hash_table_entries (struct bfd_hash_entry *gen_entry,
1675 struct bfd_hash_entry ***ptr = (struct bfd_hash_entry ***) in_args;
1682 /* Used to sort the array created by the above. */
1685 sort_by_value (const void *va, const void *vb)
1687 struct elf32_mn10300_link_hash_entry *a
1688 = *(struct elf32_mn10300_link_hash_entry **) va;
1689 struct elf32_mn10300_link_hash_entry *b
1690 = *(struct elf32_mn10300_link_hash_entry **) vb;
1692 return a->value - b->value;
1695 /* Compute the stack size and movm arguments for the function
1696 referred to by HASH at address ADDR in section with
1697 contents CONTENTS, store the information in the hash table. */
1700 compute_function_info (bfd *abfd,
1701 struct elf32_mn10300_link_hash_entry *hash,
1703 unsigned char *contents)
1705 unsigned char byte1, byte2;
1706 /* We only care about a very small subset of the possible prologue
1707 sequences here. Basically we look for:
1709 movm [d2,d3,a2,a3],sp (optional)
1710 add <size>,sp (optional, and only for sizes which fit in an unsigned
1713 If we find anything else, we quit. */
1715 /* Look for movm [regs],sp. */
1716 byte1 = bfd_get_8 (abfd, contents + addr);
1717 byte2 = bfd_get_8 (abfd, contents + addr + 1);
1721 hash->movm_args = byte2;
1723 byte1 = bfd_get_8 (abfd, contents + addr);
1724 byte2 = bfd_get_8 (abfd, contents + addr + 1);
1727 /* Now figure out how much stack space will be allocated by the movm
1728 instruction. We need this kept separate from the function's normal
1730 if (hash->movm_args)
1733 if (hash->movm_args & 0x80)
1734 hash->movm_stack_size += 4;
1737 if (hash->movm_args & 0x40)
1738 hash->movm_stack_size += 4;
1741 if (hash->movm_args & 0x20)
1742 hash->movm_stack_size += 4;
1745 if (hash->movm_args & 0x10)
1746 hash->movm_stack_size += 4;
1748 /* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */
1749 if (hash->movm_args & 0x08)
1750 hash->movm_stack_size += 8 * 4;
1752 if (bfd_get_mach (abfd) == bfd_mach_am33
1753 || bfd_get_mach (abfd) == bfd_mach_am33_2)
1755 /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */
1756 if (hash->movm_args & 0x1)
1757 hash->movm_stack_size += 6 * 4;
1759 /* exreg1 space. e4, e5, e6, e7 */
1760 if (hash->movm_args & 0x2)
1761 hash->movm_stack_size += 4 * 4;
1763 /* exreg0 space. e2, e3 */
1764 if (hash->movm_args & 0x4)
1765 hash->movm_stack_size += 2 * 4;
1769 /* Now look for the two stack adjustment variants. */
1770 if (byte1 == 0xf8 && byte2 == 0xfe)
1772 int temp = bfd_get_8 (abfd, contents + addr + 2);
1773 temp = ((temp & 0xff) ^ (~0x7f)) + 0x80;
1775 hash->stack_size = -temp;
1777 else if (byte1 == 0xfa && byte2 == 0xfe)
1779 int temp = bfd_get_16 (abfd, contents + addr + 2);
1780 temp = ((temp & 0xffff) ^ (~0x7fff)) + 0x8000;
1784 hash->stack_size = temp;
1787 /* If the total stack to be allocated by the call instruction is more
1788 than 255 bytes, then we can't remove the stack adjustment by using
1789 "call" (we might still be able to remove the "movm" instruction. */
1790 if (hash->stack_size + hash->movm_stack_size > 255)
1791 hash->stack_size = 0;
1794 /* Delete some bytes from a section while relaxing. */
1797 mn10300_elf_relax_delete_bytes (bfd *abfd,
1802 Elf_Internal_Shdr *symtab_hdr;
1803 unsigned int sec_shndx;
1805 Elf_Internal_Rela *irel, *irelend;
1806 Elf_Internal_Rela *irelalign;
1808 Elf_Internal_Sym *isym, *isymend;
1809 struct elf_link_hash_entry **sym_hashes;
1810 struct elf_link_hash_entry **end_hashes;
1811 unsigned int symcount;
1813 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
1815 contents = elf_section_data (sec)->this_hdr.contents;
1820 irel = elf_section_data (sec)->relocs;
1821 irelend = irel + sec->reloc_count;
1823 if (sec->reloc_count > 0)
1825 /* If there is an align reloc at the end of the section ignore it.
1826 GAS creates these relocs for reasons of its own, and they just
1827 serve to keep the section artifically inflated. */
1828 if (ELF32_R_TYPE ((irelend - 1)->r_info) == (int) R_MN10300_ALIGN)
1831 /* The deletion must stop at the next ALIGN reloc for an aligment
1832 power larger than, or not a multiple of, the number of bytes we
1834 for (; irel < irelend; irel++)
1836 int alignment = 1 << irel->r_addend;
1838 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN
1839 && irel->r_offset > addr
1840 && irel->r_offset < toaddr
1841 && (count < alignment
1842 || alignment % count != 0))
1845 toaddr = irel->r_offset;
1851 /* Actually delete the bytes. */
1852 memmove (contents + addr, contents + addr + count,
1853 (size_t) (toaddr - addr - count));
1855 /* Adjust the section's size if we are shrinking it, or else
1856 pad the bytes between the end of the shrunken region and
1857 the start of the next region with NOP codes. */
1858 if (irelalign == NULL)
1861 /* Include symbols at the end of the section, but
1862 not at the end of a sub-region of the section. */
1869 #define NOP_OPCODE 0xcb
1871 for (i = 0; i < count; i ++)
1872 bfd_put_8 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i);
1875 /* Adjust all the relocs. */
1876 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
1878 /* Get the new reloc address. */
1879 if ((irel->r_offset > addr
1880 && irel->r_offset < toaddr)
1881 || (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN
1882 && irel->r_offset == toaddr))
1883 irel->r_offset -= count;
1886 /* Adjust the local symbols in the section, reducing their value
1887 by the number of bytes deleted. Note - symbols within the deleted
1888 region are moved to the address of the start of the region, which
1889 actually means that they will address the byte beyond the end of
1890 the region once the deletion has been completed. */
1891 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1892 isym = (Elf_Internal_Sym *) symtab_hdr->contents;
1893 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
1895 if (isym->st_shndx == sec_shndx
1896 && isym->st_value > addr
1897 && isym->st_value < toaddr)
1899 if (isym->st_value < addr + count)
1900 isym->st_value = addr;
1902 isym->st_value -= count;
1904 /* Adjust the function symbol's size as well. */
1905 else if (isym->st_shndx == sec_shndx
1906 && ELF_ST_TYPE (isym->st_info) == STT_FUNC
1907 && isym->st_value + isym->st_size > addr
1908 && isym->st_value + isym->st_size < toaddr)
1909 isym->st_size -= count;
1912 /* Now adjust the global symbols defined in this section. */
1913 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1914 - symtab_hdr->sh_info);
1915 sym_hashes = elf_sym_hashes (abfd);
1916 end_hashes = sym_hashes + symcount;
1917 for (; sym_hashes < end_hashes; sym_hashes++)
1919 struct elf_link_hash_entry *sym_hash = *sym_hashes;
1921 if ((sym_hash->root.type == bfd_link_hash_defined
1922 || sym_hash->root.type == bfd_link_hash_defweak)
1923 && sym_hash->root.u.def.section == sec
1924 && sym_hash->root.u.def.value > addr
1925 && sym_hash->root.u.def.value < toaddr)
1927 if (sym_hash->root.u.def.value < addr + count)
1928 sym_hash->root.u.def.value = addr;
1930 sym_hash->root.u.def.value -= count;
1932 /* Adjust the function symbol's size as well. */
1933 else if (sym_hash->root.type == bfd_link_hash_defined
1934 && sym_hash->root.u.def.section == sec
1935 && sym_hash->type == STT_FUNC
1936 && sym_hash->root.u.def.value + sym_hash->size > addr
1937 && sym_hash->root.u.def.value + sym_hash->size < toaddr)
1938 sym_hash->size -= count;
1941 /* See if we can move the ALIGN reloc forward.
1942 We have adjusted r_offset for it already. */
1943 if (irelalign != NULL)
1945 bfd_vma alignto, alignaddr;
1947 if ((int) irelalign->r_addend > 0)
1949 /* This is the old address. */
1950 alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend);
1951 /* This is where the align points to now. */
1952 alignaddr = BFD_ALIGN (irelalign->r_offset,
1953 1 << irelalign->r_addend);
1954 if (alignaddr < alignto)
1955 /* Tail recursion. */
1956 return mn10300_elf_relax_delete_bytes (abfd, sec, alignaddr,
1957 (int) (alignto - alignaddr));
1964 /* Return TRUE if a symbol exists at the given address, else return
1968 mn10300_elf_symbol_address_p (bfd *abfd,
1970 Elf_Internal_Sym *isym,
1973 Elf_Internal_Shdr *symtab_hdr;
1974 unsigned int sec_shndx;
1975 Elf_Internal_Sym *isymend;
1976 struct elf_link_hash_entry **sym_hashes;
1977 struct elf_link_hash_entry **end_hashes;
1978 unsigned int symcount;
1980 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
1982 /* Examine all the symbols. */
1983 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1984 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
1985 if (isym->st_shndx == sec_shndx
1986 && isym->st_value == addr)
1989 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1990 - symtab_hdr->sh_info);
1991 sym_hashes = elf_sym_hashes (abfd);
1992 end_hashes = sym_hashes + symcount;
1993 for (; sym_hashes < end_hashes; sym_hashes++)
1995 struct elf_link_hash_entry *sym_hash = *sym_hashes;
1997 if ((sym_hash->root.type == bfd_link_hash_defined
1998 || sym_hash->root.type == bfd_link_hash_defweak)
1999 && sym_hash->root.u.def.section == sec
2000 && sym_hash->root.u.def.value == addr)
2007 /* This function handles relaxing for the mn10300.
2009 There are quite a few relaxing opportunities available on the mn10300:
2011 * calls:32 -> calls:16 2 bytes
2012 * call:32 -> call:16 2 bytes
2014 * call:32 -> calls:32 1 byte
2015 * call:16 -> calls:16 1 byte
2016 * These are done anytime using "calls" would result
2017 in smaller code, or when necessary to preserve the
2018 meaning of the program.
2022 * In some circumstances we can move instructions
2023 from a function prologue into a "call" instruction.
2024 This is only done if the resulting code is no larger
2025 than the original code.
2027 * jmp:32 -> jmp:16 2 bytes
2028 * jmp:16 -> bra:8 1 byte
2030 * If the previous instruction is a conditional branch
2031 around the jump/bra, we may be able to reverse its condition
2032 and change its target to the jump's target. The jump/bra
2033 can then be deleted. 2 bytes
2035 * mov abs32 -> mov abs16 1 or 2 bytes
2037 * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes
2038 - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes
2040 * Most instructions which accept d32 can relax to d16 1 or 2 bytes
2041 - Most instructions which accept d16 can relax to d8 1 or 2 bytes
2043 We don't handle imm16->imm8 or d16->d8 as they're very rare
2044 and somewhat more difficult to support. */
2047 mn10300_elf_relax_section (bfd *abfd,
2049 struct bfd_link_info *link_info,
2052 Elf_Internal_Shdr *symtab_hdr;
2053 Elf_Internal_Rela *internal_relocs = NULL;
2054 Elf_Internal_Rela *irel, *irelend;
2055 bfd_byte *contents = NULL;
2056 Elf_Internal_Sym *isymbuf = NULL;
2057 struct elf32_mn10300_link_hash_table *hash_table;
2058 asection *section = sec;
2059 bfd_vma align_gap_adjustment;
2061 if (link_info->relocatable)
2062 (*link_info->callbacks->einfo)
2063 (_("%P%F: --relax and -r may not be used together\n"));
2065 /* Assume nothing changes. */
2068 /* We need a pointer to the mn10300 specific hash table. */
2069 hash_table = elf32_mn10300_hash_table (link_info);
2070 if (hash_table == NULL)
2073 /* Initialize fields in each hash table entry the first time through. */
2074 if ((hash_table->flags & MN10300_HASH_ENTRIES_INITIALIZED) == 0)
2078 /* Iterate over all the input bfds. */
2079 for (input_bfd = link_info->input_bfds;
2081 input_bfd = input_bfd->link_next)
2083 /* We're going to need all the symbols for each bfd. */
2084 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2085 if (symtab_hdr->sh_info != 0)
2087 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2088 if (isymbuf == NULL)
2089 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2090 symtab_hdr->sh_info, 0,
2092 if (isymbuf == NULL)
2096 /* Iterate over each section in this bfd. */
2097 for (section = input_bfd->sections;
2099 section = section->next)
2101 struct elf32_mn10300_link_hash_entry *hash;
2102 asection *sym_sec = NULL;
2103 const char *sym_name;
2106 /* If there's nothing to do in this section, skip it. */
2107 if (! ((section->flags & SEC_RELOC) != 0
2108 && section->reloc_count != 0))
2110 if ((section->flags & SEC_ALLOC) == 0)
2113 /* Get cached copy of section contents if it exists. */
2114 if (elf_section_data (section)->this_hdr.contents != NULL)
2115 contents = elf_section_data (section)->this_hdr.contents;
2116 else if (section->size != 0)
2118 /* Go get them off disk. */
2119 if (!bfd_malloc_and_get_section (input_bfd, section,
2126 /* If there aren't any relocs, then there's nothing to do. */
2127 if ((section->flags & SEC_RELOC) != 0
2128 && section->reloc_count != 0)
2130 /* Get a copy of the native relocations. */
2131 internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section,
2133 link_info->keep_memory);
2134 if (internal_relocs == NULL)
2137 /* Now examine each relocation. */
2138 irel = internal_relocs;
2139 irelend = irel + section->reloc_count;
2140 for (; irel < irelend; irel++)
2143 unsigned long r_index;
2146 r_type = ELF32_R_TYPE (irel->r_info);
2147 r_index = ELF32_R_SYM (irel->r_info);
2149 if (r_type < 0 || r_type >= (int) R_MN10300_MAX)
2152 /* We need the name and hash table entry of the target
2157 if (r_index < symtab_hdr->sh_info)
2159 /* A local symbol. */
2160 Elf_Internal_Sym *isym;
2161 struct elf_link_hash_table *elftab;
2164 isym = isymbuf + r_index;
2165 if (isym->st_shndx == SHN_UNDEF)
2166 sym_sec = bfd_und_section_ptr;
2167 else if (isym->st_shndx == SHN_ABS)
2168 sym_sec = bfd_abs_section_ptr;
2169 else if (isym->st_shndx == SHN_COMMON)
2170 sym_sec = bfd_com_section_ptr;
2173 = bfd_section_from_elf_index (input_bfd,
2177 = bfd_elf_string_from_elf_section (input_bfd,
2182 /* If it isn't a function, then we don't care
2184 if (ELF_ST_TYPE (isym->st_info) != STT_FUNC)
2187 /* Tack on an ID so we can uniquely identify this
2188 local symbol in the global hash table. */
2189 amt = strlen (sym_name) + 10;
2190 new_name = bfd_malloc (amt);
2191 if (new_name == NULL)
2194 sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
2195 sym_name = new_name;
2197 elftab = &hash_table->static_hash_table->root;
2198 hash = ((struct elf32_mn10300_link_hash_entry *)
2199 elf_link_hash_lookup (elftab, sym_name,
2200 TRUE, TRUE, FALSE));
2205 r_index -= symtab_hdr->sh_info;
2206 hash = (struct elf32_mn10300_link_hash_entry *)
2207 elf_sym_hashes (input_bfd)[r_index];
2210 sym_name = hash->root.root.root.string;
2211 if ((section->flags & SEC_CODE) != 0)
2213 /* If this is not a "call" instruction, then we
2214 should convert "call" instructions to "calls"
2216 code = bfd_get_8 (input_bfd,
2217 contents + irel->r_offset - 1);
2218 if (code != 0xdd && code != 0xcd)
2219 hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
2222 /* If this is a jump/call, then bump the
2223 direct_calls counter. Else force "call" to
2224 "calls" conversions. */
2225 if (r_type == R_MN10300_PCREL32
2226 || r_type == R_MN10300_PLT32
2227 || r_type == R_MN10300_PLT16
2228 || r_type == R_MN10300_PCREL16)
2229 hash->direct_calls++;
2231 hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
2235 /* Now look at the actual contents to get the stack size,
2236 and a list of what registers were saved in the prologue
2238 if ((section->flags & SEC_CODE) != 0)
2240 Elf_Internal_Sym *isym, *isymend;
2241 unsigned int sec_shndx;
2242 struct elf_link_hash_entry **hashes;
2243 struct elf_link_hash_entry **end_hashes;
2244 unsigned int symcount;
2246 sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
2249 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2250 - symtab_hdr->sh_info);
2251 hashes = elf_sym_hashes (input_bfd);
2252 end_hashes = hashes + symcount;
2254 /* Look at each function defined in this section and
2255 update info for that function. */
2256 isymend = isymbuf + symtab_hdr->sh_info;
2257 for (isym = isymbuf; isym < isymend; isym++)
2259 if (isym->st_shndx == sec_shndx
2260 && ELF_ST_TYPE (isym->st_info) == STT_FUNC)
2262 struct elf_link_hash_table *elftab;
2264 struct elf_link_hash_entry **lhashes = hashes;
2266 /* Skip a local symbol if it aliases a
2268 for (; lhashes < end_hashes; lhashes++)
2270 hash = (struct elf32_mn10300_link_hash_entry *) *lhashes;
2271 if ((hash->root.root.type == bfd_link_hash_defined
2272 || hash->root.root.type == bfd_link_hash_defweak)
2273 && hash->root.root.u.def.section == section
2274 && hash->root.type == STT_FUNC
2275 && hash->root.root.u.def.value == isym->st_value)
2278 if (lhashes != end_hashes)
2281 if (isym->st_shndx == SHN_UNDEF)
2282 sym_sec = bfd_und_section_ptr;
2283 else if (isym->st_shndx == SHN_ABS)
2284 sym_sec = bfd_abs_section_ptr;
2285 else if (isym->st_shndx == SHN_COMMON)
2286 sym_sec = bfd_com_section_ptr;
2289 = bfd_section_from_elf_index (input_bfd,
2292 sym_name = (bfd_elf_string_from_elf_section
2293 (input_bfd, symtab_hdr->sh_link,
2296 /* Tack on an ID so we can uniquely identify this
2297 local symbol in the global hash table. */
2298 amt = strlen (sym_name) + 10;
2299 new_name = bfd_malloc (amt);
2300 if (new_name == NULL)
2303 sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
2304 sym_name = new_name;
2306 elftab = &hash_table->static_hash_table->root;
2307 hash = ((struct elf32_mn10300_link_hash_entry *)
2308 elf_link_hash_lookup (elftab, sym_name,
2309 TRUE, TRUE, FALSE));
2311 compute_function_info (input_bfd, hash,
2312 isym->st_value, contents);
2313 hash->value = isym->st_value;
2317 for (; hashes < end_hashes; hashes++)
2319 hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
2320 if ((hash->root.root.type == bfd_link_hash_defined
2321 || hash->root.root.type == bfd_link_hash_defweak)
2322 && hash->root.root.u.def.section == section
2323 && hash->root.type == STT_FUNC)
2324 compute_function_info (input_bfd, hash,
2325 (hash)->root.root.u.def.value,
2330 /* Cache or free any memory we allocated for the relocs. */
2331 if (internal_relocs != NULL
2332 && elf_section_data (section)->relocs != internal_relocs)
2333 free (internal_relocs);
2334 internal_relocs = NULL;
2336 /* Cache or free any memory we allocated for the contents. */
2337 if (contents != NULL
2338 && elf_section_data (section)->this_hdr.contents != contents)
2340 if (! link_info->keep_memory)
2344 /* Cache the section contents for elf_link_input_bfd. */
2345 elf_section_data (section)->this_hdr.contents = contents;
2351 /* Cache or free any memory we allocated for the symbols. */
2353 && symtab_hdr->contents != (unsigned char *) isymbuf)
2355 if (! link_info->keep_memory)
2359 /* Cache the symbols for elf_link_input_bfd. */
2360 symtab_hdr->contents = (unsigned char *) isymbuf;
2366 /* Now iterate on each symbol in the hash table and perform
2367 the final initialization steps on each. */
2368 elf32_mn10300_link_hash_traverse (hash_table,
2369 elf32_mn10300_finish_hash_table_entry,
2371 elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
2372 elf32_mn10300_finish_hash_table_entry,
2376 /* This section of code collects all our local symbols, sorts
2377 them by value, and looks for multiple symbols referring to
2378 the same address. For those symbols, the flags are merged.
2379 At this point, the only flag that can be set is
2380 MN10300_CONVERT_CALL_TO_CALLS, so we simply OR the flags
2382 int static_count = 0, i;
2383 struct elf32_mn10300_link_hash_entry **entries;
2384 struct elf32_mn10300_link_hash_entry **ptr;
2386 elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
2387 elf32_mn10300_count_hash_table_entries,
2390 entries = bfd_malloc (static_count * sizeof (* ptr));
2393 elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
2394 elf32_mn10300_list_hash_table_entries,
2397 qsort (entries, static_count, sizeof (entries[0]), sort_by_value);
2399 for (i = 0; i < static_count - 1; i++)
2400 if (entries[i]->value && entries[i]->value == entries[i+1]->value)
2402 int v = entries[i]->flags;
2405 for (j = i + 1; j < static_count && entries[j]->value == entries[i]->value; j++)
2406 v |= entries[j]->flags;
2408 for (j = i; j < static_count && entries[j]->value == entries[i]->value; j++)
2409 entries[j]->flags = v;
2415 /* All entries in the hash table are fully initialized. */
2416 hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED;
2418 /* Now that everything has been initialized, go through each
2419 code section and delete any prologue insns which will be
2420 redundant because their operations will be performed by
2421 a "call" instruction. */
2422 for (input_bfd = link_info->input_bfds;
2424 input_bfd = input_bfd->link_next)
2426 /* We're going to need all the local symbols for each bfd. */
2427 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2428 if (symtab_hdr->sh_info != 0)
2430 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2431 if (isymbuf == NULL)
2432 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2433 symtab_hdr->sh_info, 0,
2435 if (isymbuf == NULL)
2439 /* Walk over each section in this bfd. */
2440 for (section = input_bfd->sections;
2442 section = section->next)
2444 unsigned int sec_shndx;
2445 Elf_Internal_Sym *isym, *isymend;
2446 struct elf_link_hash_entry **hashes;
2447 struct elf_link_hash_entry **end_hashes;
2448 unsigned int symcount;
2450 /* Skip non-code sections and empty sections. */
2451 if ((section->flags & SEC_CODE) == 0 || section->size == 0)
2454 if (section->reloc_count != 0)
2456 /* Get a copy of the native relocations. */
2457 internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section,
2459 link_info->keep_memory);
2460 if (internal_relocs == NULL)
2464 /* Get cached copy of section contents if it exists. */
2465 if (elf_section_data (section)->this_hdr.contents != NULL)
2466 contents = elf_section_data (section)->this_hdr.contents;
2469 /* Go get them off disk. */
2470 if (!bfd_malloc_and_get_section (input_bfd, section,
2475 sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
2478 /* Now look for any function in this section which needs
2479 insns deleted from its prologue. */
2480 isymend = isymbuf + symtab_hdr->sh_info;
2481 for (isym = isymbuf; isym < isymend; isym++)
2483 struct elf32_mn10300_link_hash_entry *sym_hash;
2484 asection *sym_sec = NULL;
2485 const char *sym_name;
2487 struct elf_link_hash_table *elftab;
2490 if (isym->st_shndx != sec_shndx)
2493 if (isym->st_shndx == SHN_UNDEF)
2494 sym_sec = bfd_und_section_ptr;
2495 else if (isym->st_shndx == SHN_ABS)
2496 sym_sec = bfd_abs_section_ptr;
2497 else if (isym->st_shndx == SHN_COMMON)
2498 sym_sec = bfd_com_section_ptr;
2501 = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
2504 = bfd_elf_string_from_elf_section (input_bfd,
2505 symtab_hdr->sh_link,
2508 /* Tack on an ID so we can uniquely identify this
2509 local symbol in the global hash table. */
2510 amt = strlen (sym_name) + 10;
2511 new_name = bfd_malloc (amt);
2512 if (new_name == NULL)
2514 sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
2515 sym_name = new_name;
2517 elftab = & hash_table->static_hash_table->root;
2518 sym_hash = (struct elf32_mn10300_link_hash_entry *)
2519 elf_link_hash_lookup (elftab, sym_name,
2520 FALSE, FALSE, FALSE);
2523 if (sym_hash == NULL)
2526 if (! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
2527 && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
2531 /* Note that we've changed things. */
2532 elf_section_data (section)->relocs = internal_relocs;
2533 elf_section_data (section)->this_hdr.contents = contents;
2534 symtab_hdr->contents = (unsigned char *) isymbuf;
2536 /* Count how many bytes we're going to delete. */
2537 if (sym_hash->movm_args)
2540 if (sym_hash->stack_size > 0)
2542 if (sym_hash->stack_size <= 128)
2548 /* Note that we've deleted prologue bytes for this
2550 sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
2552 /* Actually delete the bytes. */
2553 if (!mn10300_elf_relax_delete_bytes (input_bfd,
2559 /* Something changed. Not strictly necessary, but
2560 may lead to more relaxing opportunities. */
2565 /* Look for any global functions in this section which
2566 need insns deleted from their prologues. */
2567 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2568 - symtab_hdr->sh_info);
2569 hashes = elf_sym_hashes (input_bfd);
2570 end_hashes = hashes + symcount;
2571 for (; hashes < end_hashes; hashes++)
2573 struct elf32_mn10300_link_hash_entry *sym_hash;
2575 sym_hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
2576 if ((sym_hash->root.root.type == bfd_link_hash_defined
2577 || sym_hash->root.root.type == bfd_link_hash_defweak)
2578 && sym_hash->root.root.u.def.section == section
2579 && ! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
2580 && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
2585 /* Note that we've changed things. */
2586 elf_section_data (section)->relocs = internal_relocs;
2587 elf_section_data (section)->this_hdr.contents = contents;
2588 symtab_hdr->contents = (unsigned char *) isymbuf;
2590 /* Count how many bytes we're going to delete. */
2591 if (sym_hash->movm_args)
2594 if (sym_hash->stack_size > 0)
2596 if (sym_hash->stack_size <= 128)
2602 /* Note that we've deleted prologue bytes for this
2604 sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
2606 /* Actually delete the bytes. */
2607 symval = sym_hash->root.root.u.def.value;
2608 if (!mn10300_elf_relax_delete_bytes (input_bfd,
2614 /* Something changed. Not strictly necessary, but
2615 may lead to more relaxing opportunities. */
2620 /* Cache or free any memory we allocated for the relocs. */
2621 if (internal_relocs != NULL
2622 && elf_section_data (section)->relocs != internal_relocs)
2623 free (internal_relocs);
2624 internal_relocs = NULL;
2626 /* Cache or free any memory we allocated for the contents. */
2627 if (contents != NULL
2628 && elf_section_data (section)->this_hdr.contents != contents)
2630 if (! link_info->keep_memory)
2633 /* Cache the section contents for elf_link_input_bfd. */
2634 elf_section_data (section)->this_hdr.contents = contents;
2639 /* Cache or free any memory we allocated for the symbols. */
2641 && symtab_hdr->contents != (unsigned char *) isymbuf)
2643 if (! link_info->keep_memory)
2646 /* Cache the symbols for elf_link_input_bfd. */
2647 symtab_hdr->contents = (unsigned char *) isymbuf;
2653 /* (Re)initialize for the basic instruction shortening/relaxing pass. */
2655 internal_relocs = NULL;
2657 /* For error_return. */
2660 /* We don't have to do anything for a relocatable link, if
2661 this section does not have relocs, or if this is not a
2663 if (link_info->relocatable
2664 || (sec->flags & SEC_RELOC) == 0
2665 || sec->reloc_count == 0
2666 || (sec->flags & SEC_CODE) == 0)
2669 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2671 /* Get a copy of the native relocations. */
2672 internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
2673 link_info->keep_memory);
2674 if (internal_relocs == NULL)
2677 /* Scan for worst case alignment gap changes. Note that this logic
2678 is not ideal; what we should do is run this scan for every
2679 opcode/address range and adjust accordingly, but that's
2680 expensive. Worst case is that for an alignment of N bytes, we
2681 move by 2*N-N-1 bytes, assuming we have aligns of 1, 2, 4, 8, etc
2682 all before it. Plus, this still doesn't cover cross-section
2683 jumps with section alignment. */
2684 irelend = internal_relocs + sec->reloc_count;
2685 align_gap_adjustment = 0;
2686 for (irel = internal_relocs; irel < irelend; irel++)
2688 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN)
2690 bfd_vma adj = 1 << irel->r_addend;
2691 bfd_vma aend = irel->r_offset;
2693 aend = BFD_ALIGN (aend, 1 << irel->r_addend);
2694 adj = 2 * adj - adj - 1;
2696 /* Record the biggest adjustmnet. Skip any alignment at the
2697 end of our section. */
2698 if (align_gap_adjustment < adj
2699 && aend < sec->output_section->vma + sec->output_offset + sec->size)
2700 align_gap_adjustment = adj;
2704 /* Walk through them looking for relaxing opportunities. */
2705 irelend = internal_relocs + sec->reloc_count;
2706 for (irel = internal_relocs; irel < irelend; irel++)
2709 bfd_signed_vma jump_offset;
2710 asection *sym_sec = NULL;
2711 struct elf32_mn10300_link_hash_entry *h = NULL;
2713 /* If this isn't something that can be relaxed, then ignore
2715 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_NONE
2716 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8
2717 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_MAX)
2720 /* Get the section contents if we haven't done so already. */
2721 if (contents == NULL)
2723 /* Get cached copy if it exists. */
2724 if (elf_section_data (sec)->this_hdr.contents != NULL)
2725 contents = elf_section_data (sec)->this_hdr.contents;
2728 /* Go get them off disk. */
2729 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2734 /* Read this BFD's symbols if we haven't done so already. */
2735 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
2737 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2738 if (isymbuf == NULL)
2739 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
2740 symtab_hdr->sh_info, 0,
2742 if (isymbuf == NULL)
2746 /* Get the value of the symbol referred to by the reloc. */
2747 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
2749 Elf_Internal_Sym *isym;
2750 const char *sym_name;
2753 /* A local symbol. */
2754 isym = isymbuf + ELF32_R_SYM (irel->r_info);
2755 if (isym->st_shndx == SHN_UNDEF)
2756 sym_sec = bfd_und_section_ptr;
2757 else if (isym->st_shndx == SHN_ABS)
2758 sym_sec = bfd_abs_section_ptr;
2759 else if (isym->st_shndx == SHN_COMMON)
2760 sym_sec = bfd_com_section_ptr;
2762 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2764 sym_name = bfd_elf_string_from_elf_section (abfd,
2765 symtab_hdr->sh_link,
2768 if ((sym_sec->flags & SEC_MERGE)
2769 && sym_sec->sec_info_type == ELF_INFO_TYPE_MERGE)
2771 symval = isym->st_value;
2773 /* GAS may reduce relocations against symbols in SEC_MERGE
2774 sections to a relocation against the section symbol when
2775 the original addend was zero. When the reloc is against
2776 a section symbol we should include the addend in the
2777 offset passed to _bfd_merged_section_offset, since the
2778 location of interest is the original symbol. On the
2779 other hand, an access to "sym+addend" where "sym" is not
2780 a section symbol should not include the addend; Such an
2781 access is presumed to be an offset from "sym"; The
2782 location of interest is just "sym". */
2783 if (ELF_ST_TYPE (isym->st_info) == STT_SECTION)
2784 symval += irel->r_addend;
2786 symval = _bfd_merged_section_offset (abfd, & sym_sec,
2787 elf_section_data (sym_sec)->sec_info,
2790 if (ELF_ST_TYPE (isym->st_info) != STT_SECTION)
2791 symval += irel->r_addend;
2793 symval += sym_sec->output_section->vma
2794 + sym_sec->output_offset - irel->r_addend;
2797 symval = (isym->st_value
2798 + sym_sec->output_section->vma
2799 + sym_sec->output_offset);
2801 /* Tack on an ID so we can uniquely identify this
2802 local symbol in the global hash table. */
2803 new_name = bfd_malloc ((bfd_size_type) strlen (sym_name) + 10);
2804 if (new_name == NULL)
2806 sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
2807 sym_name = new_name;
2809 h = (struct elf32_mn10300_link_hash_entry *)
2810 elf_link_hash_lookup (&hash_table->static_hash_table->root,
2811 sym_name, FALSE, FALSE, FALSE);
2818 /* An external symbol. */
2819 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2820 h = (struct elf32_mn10300_link_hash_entry *)
2821 (elf_sym_hashes (abfd)[indx]);
2822 BFD_ASSERT (h != NULL);
2823 if (h->root.root.type != bfd_link_hash_defined
2824 && h->root.root.type != bfd_link_hash_defweak)
2825 /* This appears to be a reference to an undefined
2826 symbol. Just ignore it--it will be caught by the
2827 regular reloc processing. */
2830 /* Check for a reference to a discarded symbol and ignore it. */
2831 if (h->root.root.u.def.section->output_section == NULL)
2834 sym_sec = h->root.root.u.def.section->output_section;
2836 symval = (h->root.root.u.def.value
2837 + h->root.root.u.def.section->output_section->vma
2838 + h->root.root.u.def.section->output_offset);
2841 /* For simplicity of coding, we are going to modify the section
2842 contents, the section relocs, and the BFD symbol table. We
2843 must tell the rest of the code not to free up this
2844 information. It would be possible to instead create a table
2845 of changes which have to be made, as is done in coff-mips.c;
2846 that would be more work, but would require less memory when
2847 the linker is run. */
2849 /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative
2850 branch/call, also deal with "call" -> "calls" conversions and
2851 insertion of prologue data into "call" instructions. */
2852 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32
2853 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32)
2855 bfd_vma value = symval;
2857 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32
2859 && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
2860 && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
2861 && h->root.plt.offset != (bfd_vma) -1)
2865 splt = bfd_get_section_by_name (elf_hash_table (link_info)
2868 value = ((splt->output_section->vma
2869 + splt->output_offset
2870 + h->root.plt.offset)
2871 - (sec->output_section->vma
2872 + sec->output_offset
2876 /* If we've got a "call" instruction that needs to be turned
2877 into a "calls" instruction, do so now. It saves a byte. */
2878 if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
2882 /* Get the opcode. */
2883 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2885 /* Make sure we're working with a "call" instruction! */
2888 /* Note that we've changed the relocs, section contents,
2890 elf_section_data (sec)->relocs = internal_relocs;
2891 elf_section_data (sec)->this_hdr.contents = contents;
2892 symtab_hdr->contents = (unsigned char *) isymbuf;
2894 /* Fix the opcode. */
2895 bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1);
2896 bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
2898 /* Fix irel->r_offset and irel->r_addend. */
2899 irel->r_offset += 1;
2900 irel->r_addend += 1;
2902 /* Delete one byte of data. */
2903 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2904 irel->r_offset + 3, 1))
2907 /* That will change things, so, we should relax again.
2908 Note that this is not required, and it may be slow. */
2914 /* We've got a "call" instruction which needs some data
2915 from target function filled in. */
2918 /* Get the opcode. */
2919 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2921 /* Insert data from the target function into the "call"
2922 instruction if needed. */
2925 bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 4);
2926 bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
2927 contents + irel->r_offset + 5);
2931 /* Deal with pc-relative gunk. */
2932 value -= (sec->output_section->vma + sec->output_offset);
2933 value -= irel->r_offset;
2934 value += irel->r_addend;
2936 /* See if the value will fit in 16 bits, note the high value is
2937 0x7fff + 2 as the target will be two bytes closer if we are
2938 able to relax, if it's in the same section. */
2939 if (sec->output_section == sym_sec->output_section)
2940 jump_offset = 0x8001;
2942 jump_offset = 0x7fff;
2944 /* Account for jumps across alignment boundaries using
2945 align_gap_adjustment. */
2946 if ((bfd_signed_vma) value < jump_offset - (bfd_signed_vma) align_gap_adjustment
2947 && ((bfd_signed_vma) value > -0x8000 + (bfd_signed_vma) align_gap_adjustment))
2951 /* Get the opcode. */
2952 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2954 if (code != 0xdc && code != 0xdd && code != 0xff)
2957 /* Note that we've changed the relocs, section contents, etc. */
2958 elf_section_data (sec)->relocs = internal_relocs;
2959 elf_section_data (sec)->this_hdr.contents = contents;
2960 symtab_hdr->contents = (unsigned char *) isymbuf;
2962 /* Fix the opcode. */
2964 bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1);
2965 else if (code == 0xdd)
2966 bfd_put_8 (abfd, 0xcd, contents + irel->r_offset - 1);
2967 else if (code == 0xff)
2968 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
2970 /* Fix the relocation's type. */
2971 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2972 (ELF32_R_TYPE (irel->r_info)
2973 == (int) R_MN10300_PLT32)
2977 /* Delete two bytes of data. */
2978 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2979 irel->r_offset + 1, 2))
2982 /* That will change things, so, we should relax again.
2983 Note that this is not required, and it may be slow. */
2988 /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative
2990 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL16)
2992 bfd_vma value = symval;
2994 /* If we've got a "call" instruction that needs to be turned
2995 into a "calls" instruction, do so now. It saves a byte. */
2996 if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
3000 /* Get the opcode. */
3001 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3003 /* Make sure we're working with a "call" instruction! */
3006 /* Note that we've changed the relocs, section contents,
3008 elf_section_data (sec)->relocs = internal_relocs;
3009 elf_section_data (sec)->this_hdr.contents = contents;
3010 symtab_hdr->contents = (unsigned char *) isymbuf;
3012 /* Fix the opcode. */
3013 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1);
3014 bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
3016 /* Fix irel->r_offset and irel->r_addend. */
3017 irel->r_offset += 1;
3018 irel->r_addend += 1;
3020 /* Delete one byte of data. */
3021 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3022 irel->r_offset + 1, 1))
3025 /* That will change things, so, we should relax again.
3026 Note that this is not required, and it may be slow. */
3034 /* Get the opcode. */
3035 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3037 /* Insert data from the target function into the "call"
3038 instruction if needed. */
3041 bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 2);
3042 bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
3043 contents + irel->r_offset + 3);
3047 /* Deal with pc-relative gunk. */
3048 value -= (sec->output_section->vma + sec->output_offset);
3049 value -= irel->r_offset;
3050 value += irel->r_addend;
3052 /* See if the value will fit in 8 bits, note the high value is
3053 0x7f + 1 as the target will be one bytes closer if we are
3055 if ((long) value < 0x80 && (long) value > -0x80)
3059 /* Get the opcode. */
3060 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3065 /* Note that we've changed the relocs, section contents, etc. */
3066 elf_section_data (sec)->relocs = internal_relocs;
3067 elf_section_data (sec)->this_hdr.contents = contents;
3068 symtab_hdr->contents = (unsigned char *) isymbuf;
3070 /* Fix the opcode. */
3071 bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1);
3073 /* Fix the relocation's type. */
3074 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3077 /* Delete one byte of data. */
3078 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3079 irel->r_offset + 1, 1))
3082 /* That will change things, so, we should relax again.
3083 Note that this is not required, and it may be slow. */
3088 /* Try to eliminate an unconditional 8 bit pc-relative branch
3089 which immediately follows a conditional 8 bit pc-relative
3090 branch around the unconditional branch.
3097 This happens when the bCC can't reach lab2 at assembly time,
3098 but due to other relaxations it can reach at link time. */
3099 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8)
3101 Elf_Internal_Rela *nrel;
3102 bfd_vma value = symval;
3105 /* Deal with pc-relative gunk. */
3106 value -= (sec->output_section->vma + sec->output_offset);
3107 value -= irel->r_offset;
3108 value += irel->r_addend;
3110 /* Do nothing if this reloc is the last byte in the section. */
3111 if (irel->r_offset == sec->size)
3114 /* See if the next instruction is an unconditional pc-relative
3115 branch, more often than not this test will fail, so we
3116 test it first to speed things up. */
3117 code = bfd_get_8 (abfd, contents + irel->r_offset + 1);
3121 /* Also make sure the next relocation applies to the next
3122 instruction and that it's a pc-relative 8 bit branch. */
3125 || irel->r_offset + 2 != nrel->r_offset
3126 || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10300_PCREL8)
3129 /* Make sure our destination immediately follows the
3130 unconditional branch. */
3131 if (symval != (sec->output_section->vma + sec->output_offset
3132 + irel->r_offset + 3))
3135 /* Now make sure we are a conditional branch. This may not
3136 be necessary, but why take the chance.
3138 Note these checks assume that R_MN10300_PCREL8 relocs
3139 only occur on bCC and bCCx insns. If they occured
3140 elsewhere, we'd need to know the start of this insn
3141 for this check to be accurate. */
3142 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3143 if (code != 0xc0 && code != 0xc1 && code != 0xc2
3144 && code != 0xc3 && code != 0xc4 && code != 0xc5
3145 && code != 0xc6 && code != 0xc7 && code != 0xc8
3146 && code != 0xc9 && code != 0xe8 && code != 0xe9
3147 && code != 0xea && code != 0xeb)
3150 /* We also have to be sure there is no symbol/label
3151 at the unconditional branch. */
3152 if (mn10300_elf_symbol_address_p (abfd, sec, isymbuf,
3153 irel->r_offset + 1))
3156 /* Note that we've changed the relocs, section contents, etc. */
3157 elf_section_data (sec)->relocs = internal_relocs;
3158 elf_section_data (sec)->this_hdr.contents = contents;
3159 symtab_hdr->contents = (unsigned char *) isymbuf;
3161 /* Reverse the condition of the first branch. */
3207 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3209 /* Set the reloc type and symbol for the first branch
3210 from the second branch. */
3211 irel->r_info = nrel->r_info;
3213 /* Make the reloc for the second branch a null reloc. */
3214 nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info),
3217 /* Delete two bytes of data. */
3218 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3219 irel->r_offset + 1, 2))
3222 /* That will change things, so, we should relax again.
3223 Note that this is not required, and it may be slow. */
3227 /* Try to turn a 24 immediate, displacement or absolute address
3228 into a 8 immediate, displacement or absolute address. */
3229 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_24)
3231 bfd_vma value = symval;
3232 value += irel->r_addend;
3234 /* See if the value will fit in 8 bits. */
3235 if ((long) value < 0x7f && (long) value > -0x80)
3239 /* AM33 insns which have 24 operands are 6 bytes long and
3240 will have 0xfd as the first byte. */
3242 /* Get the first opcode. */
3243 code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
3247 /* Get the second opcode. */
3248 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
3250 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
3251 equivalent instructions exists. */
3252 if (code != 0x6b && code != 0x7b
3253 && code != 0x8b && code != 0x9b
3254 && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
3255 || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
3256 || (code & 0x0f) == 0x0e))
3258 /* Not safe if the high bit is on as relaxing may
3259 move the value out of high mem and thus not fit
3260 in a signed 8bit value. This is currently over
3262 if ((value & 0x80) == 0)
3264 /* Note that we've changed the relocation contents,
3266 elf_section_data (sec)->relocs = internal_relocs;
3267 elf_section_data (sec)->this_hdr.contents = contents;
3268 symtab_hdr->contents = (unsigned char *) isymbuf;
3270 /* Fix the opcode. */
3271 bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3);
3272 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3274 /* Fix the relocation's type. */
3276 ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3279 /* Delete two bytes of data. */
3280 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3281 irel->r_offset + 1, 2))
3284 /* That will change things, so, we should relax
3285 again. Note that this is not required, and it
3295 /* Try to turn a 32bit immediate, displacement or absolute address
3296 into a 16bit immediate, displacement or absolute address. */
3297 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32
3298 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32
3299 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32)
3301 bfd_vma value = symval;
3303 if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32)
3307 sgot = bfd_get_section_by_name (elf_hash_table (link_info)
3310 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32)
3312 value = sgot->output_offset;
3315 value += h->root.got.offset;
3317 value += (elf_local_got_offsets
3318 (abfd)[ELF32_R_SYM (irel->r_info)]);
3320 else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32)
3321 value -= sgot->output_section->vma;
3322 else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32)
3323 value = (sgot->output_section->vma
3324 - (sec->output_section->vma
3325 + sec->output_offset
3331 value += irel->r_addend;
3333 /* See if the value will fit in 24 bits.
3334 We allow any 16bit match here. We prune those we can't
3336 if ((long) value < 0x7fffff && (long) value > -0x800000)
3340 /* AM33 insns which have 32bit operands are 7 bytes long and
3341 will have 0xfe as the first byte. */
3343 /* Get the first opcode. */
3344 code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
3348 /* Get the second opcode. */
3349 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
3351 /* All the am33 32 -> 24 relaxing possibilities. */
3352 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
3353 equivalent instructions exists. */
3354 if (code != 0x6b && code != 0x7b
3355 && code != 0x8b && code != 0x9b
3356 && (ELF32_R_TYPE (irel->r_info)
3357 != (int) R_MN10300_GOTPC32)
3358 && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
3359 || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
3360 || (code & 0x0f) == 0x0e))
3362 /* Not safe if the high bit is on as relaxing may
3363 move the value out of high mem and thus not fit
3364 in a signed 16bit value. This is currently over
3366 if ((value & 0x8000) == 0)
3368 /* Note that we've changed the relocation contents,
3370 elf_section_data (sec)->relocs = internal_relocs;
3371 elf_section_data (sec)->this_hdr.contents = contents;
3372 symtab_hdr->contents = (unsigned char *) isymbuf;
3374 /* Fix the opcode. */
3375 bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3);
3376 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3378 /* Fix the relocation's type. */
3380 ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3381 (ELF32_R_TYPE (irel->r_info)
3382 == (int) R_MN10300_GOTOFF32)
3383 ? R_MN10300_GOTOFF24
3384 : (ELF32_R_TYPE (irel->r_info)
3385 == (int) R_MN10300_GOT32)
3389 /* Delete one byte of data. */
3390 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3391 irel->r_offset + 3, 1))
3394 /* That will change things, so, we should relax
3395 again. Note that this is not required, and it
3404 /* See if the value will fit in 16 bits.
3405 We allow any 16bit match here. We prune those we can't
3407 if ((long) value < 0x7fff && (long) value > -0x8000)
3411 /* Most insns which have 32bit operands are 6 bytes long;
3412 exceptions are pcrel insns and bit insns.
3414 We handle pcrel insns above. We don't bother trying
3415 to handle the bit insns here.
3417 The first byte of the remaining insns will be 0xfc. */
3419 /* Get the first opcode. */
3420 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
3425 /* Get the second opcode. */
3426 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3428 if ((code & 0xf0) < 0x80)
3429 switch (code & 0xf0)
3431 /* mov (d32,am),dn -> mov (d32,am),dn
3432 mov dm,(d32,am) -> mov dn,(d32,am)
3433 mov (d32,am),an -> mov (d32,am),an
3434 mov dm,(d32,am) -> mov dn,(d32,am)
3435 movbu (d32,am),dn -> movbu (d32,am),dn
3436 movbu dm,(d32,am) -> movbu dn,(d32,am)
3437 movhu (d32,am),dn -> movhu (d32,am),dn
3438 movhu dm,(d32,am) -> movhu dn,(d32,am) */
3447 /* Not safe if the high bit is on as relaxing may
3448 move the value out of high mem and thus not fit
3449 in a signed 16bit value. */
3451 && (value & 0x8000))
3454 /* Note that we've changed the relocation contents, etc. */
3455 elf_section_data (sec)->relocs = internal_relocs;
3456 elf_section_data (sec)->this_hdr.contents = contents;
3457 symtab_hdr->contents = (unsigned char *) isymbuf;
3459 /* Fix the opcode. */
3460 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3461 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3463 /* Fix the relocation's type. */
3464 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3465 (ELF32_R_TYPE (irel->r_info)
3466 == (int) R_MN10300_GOTOFF32)
3467 ? R_MN10300_GOTOFF16
3468 : (ELF32_R_TYPE (irel->r_info)
3469 == (int) R_MN10300_GOT32)
3471 : (ELF32_R_TYPE (irel->r_info)
3472 == (int) R_MN10300_GOTPC32)
3473 ? R_MN10300_GOTPC16 :
3476 /* Delete two bytes of data. */
3477 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3478 irel->r_offset + 2, 2))
3481 /* That will change things, so, we should relax again.
3482 Note that this is not required, and it may be slow. */
3486 else if ((code & 0xf0) == 0x80
3487 || (code & 0xf0) == 0x90)
3488 switch (code & 0xf3)
3490 /* mov dn,(abs32) -> mov dn,(abs16)
3491 movbu dn,(abs32) -> movbu dn,(abs16)
3492 movhu dn,(abs32) -> movhu dn,(abs16) */
3496 /* Note that we've changed the relocation contents, etc. */
3497 elf_section_data (sec)->relocs = internal_relocs;
3498 elf_section_data (sec)->this_hdr.contents = contents;
3499 symtab_hdr->contents = (unsigned char *) isymbuf;
3501 if ((code & 0xf3) == 0x81)
3502 code = 0x01 + (code & 0x0c);
3503 else if ((code & 0xf3) == 0x82)
3504 code = 0x02 + (code & 0x0c);
3505 else if ((code & 0xf3) == 0x83)
3506 code = 0x03 + (code & 0x0c);
3510 /* Fix the opcode. */
3511 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3513 /* Fix the relocation's type. */
3514 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3515 (ELF32_R_TYPE (irel->r_info)
3516 == (int) R_MN10300_GOTOFF32)
3517 ? R_MN10300_GOTOFF16
3518 : (ELF32_R_TYPE (irel->r_info)
3519 == (int) R_MN10300_GOT32)
3521 : (ELF32_R_TYPE (irel->r_info)
3522 == (int) R_MN10300_GOTPC32)
3523 ? R_MN10300_GOTPC16 :
3526 /* The opcode got shorter too, so we have to fix the
3527 addend and offset too! */
3528 irel->r_offset -= 1;
3530 /* Delete three bytes of data. */
3531 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3532 irel->r_offset + 1, 3))
3535 /* That will change things, so, we should relax again.
3536 Note that this is not required, and it may be slow. */
3540 /* mov am,(abs32) -> mov am,(abs16)
3541 mov am,(d32,sp) -> mov am,(d16,sp)
3542 mov dm,(d32,sp) -> mov dm,(d32,sp)
3543 movbu dm,(d32,sp) -> movbu dm,(d32,sp)
3544 movhu dm,(d32,sp) -> movhu dm,(d32,sp) */
3550 /* sp-based offsets are zero-extended. */
3551 if (code >= 0x90 && code <= 0x93
3552 && (long) value < 0)
3555 /* Note that we've changed the relocation contents, etc. */
3556 elf_section_data (sec)->relocs = internal_relocs;
3557 elf_section_data (sec)->this_hdr.contents = contents;
3558 symtab_hdr->contents = (unsigned char *) isymbuf;
3560 /* Fix the opcode. */
3561 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3562 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3564 /* Fix the relocation's type. */
3565 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3566 (ELF32_R_TYPE (irel->r_info)
3567 == (int) R_MN10300_GOTOFF32)
3568 ? R_MN10300_GOTOFF16
3569 : (ELF32_R_TYPE (irel->r_info)
3570 == (int) R_MN10300_GOT32)
3572 : (ELF32_R_TYPE (irel->r_info)
3573 == (int) R_MN10300_GOTPC32)
3574 ? R_MN10300_GOTPC16 :
3577 /* Delete two bytes of data. */
3578 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3579 irel->r_offset + 2, 2))
3582 /* That will change things, so, we should relax again.
3583 Note that this is not required, and it may be slow. */
3587 else if ((code & 0xf0) < 0xf0)
3588 switch (code & 0xfc)
3590 /* mov imm32,dn -> mov imm16,dn
3591 mov imm32,an -> mov imm16,an
3592 mov (abs32),dn -> mov (abs16),dn
3593 movbu (abs32),dn -> movbu (abs16),dn
3594 movhu (abs32),dn -> movhu (abs16),dn */
3600 /* Not safe if the high bit is on as relaxing may
3601 move the value out of high mem and thus not fit
3602 in a signed 16bit value. */
3604 && (value & 0x8000))
3607 /* mov imm16, an zero-extends the immediate. */
3609 && (long) value < 0)
3612 /* Note that we've changed the relocation contents, etc. */
3613 elf_section_data (sec)->relocs = internal_relocs;
3614 elf_section_data (sec)->this_hdr.contents = contents;
3615 symtab_hdr->contents = (unsigned char *) isymbuf;
3617 if ((code & 0xfc) == 0xcc)
3618 code = 0x2c + (code & 0x03);
3619 else if ((code & 0xfc) == 0xdc)
3620 code = 0x24 + (code & 0x03);
3621 else if ((code & 0xfc) == 0xa4)
3622 code = 0x30 + (code & 0x03);
3623 else if ((code & 0xfc) == 0xa8)
3624 code = 0x34 + (code & 0x03);
3625 else if ((code & 0xfc) == 0xac)
3626 code = 0x38 + (code & 0x03);
3630 /* Fix the opcode. */
3631 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3633 /* Fix the relocation's type. */
3634 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3635 (ELF32_R_TYPE (irel->r_info)
3636 == (int) R_MN10300_GOTOFF32)
3637 ? R_MN10300_GOTOFF16
3638 : (ELF32_R_TYPE (irel->r_info)
3639 == (int) R_MN10300_GOT32)
3641 : (ELF32_R_TYPE (irel->r_info)
3642 == (int) R_MN10300_GOTPC32)
3643 ? R_MN10300_GOTPC16 :
3646 /* The opcode got shorter too, so we have to fix the
3647 addend and offset too! */
3648 irel->r_offset -= 1;
3650 /* Delete three bytes of data. */
3651 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3652 irel->r_offset + 1, 3))
3655 /* That will change things, so, we should relax again.
3656 Note that this is not required, and it may be slow. */
3660 /* mov (abs32),an -> mov (abs16),an
3661 mov (d32,sp),an -> mov (d16,sp),an
3662 mov (d32,sp),dn -> mov (d16,sp),dn
3663 movbu (d32,sp),dn -> movbu (d16,sp),dn
3664 movhu (d32,sp),dn -> movhu (d16,sp),dn
3665 add imm32,dn -> add imm16,dn
3666 cmp imm32,dn -> cmp imm16,dn
3667 add imm32,an -> add imm16,an
3668 cmp imm32,an -> cmp imm16,an
3669 and imm32,dn -> and imm16,dn
3670 or imm32,dn -> or imm16,dn
3671 xor imm32,dn -> xor imm16,dn
3672 btst imm32,dn -> btst imm16,dn */
3688 /* cmp imm16, an zero-extends the immediate. */
3690 && (long) value < 0)
3693 /* So do sp-based offsets. */
3694 if (code >= 0xb0 && code <= 0xb3
3695 && (long) value < 0)
3698 /* Note that we've changed the relocation contents, etc. */
3699 elf_section_data (sec)->relocs = internal_relocs;
3700 elf_section_data (sec)->this_hdr.contents = contents;
3701 symtab_hdr->contents = (unsigned char *) isymbuf;
3703 /* Fix the opcode. */
3704 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3705 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3707 /* Fix the relocation's type. */
3708 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3709 (ELF32_R_TYPE (irel->r_info)
3710 == (int) R_MN10300_GOTOFF32)
3711 ? R_MN10300_GOTOFF16
3712 : (ELF32_R_TYPE (irel->r_info)
3713 == (int) R_MN10300_GOT32)
3715 : (ELF32_R_TYPE (irel->r_info)
3716 == (int) R_MN10300_GOTPC32)
3717 ? R_MN10300_GOTPC16 :
3720 /* Delete two bytes of data. */
3721 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3722 irel->r_offset + 2, 2))
3725 /* That will change things, so, we should relax again.
3726 Note that this is not required, and it may be slow. */
3730 else if (code == 0xfe)
3732 /* add imm32,sp -> add imm16,sp */
3734 /* Note that we've changed the relocation contents, etc. */
3735 elf_section_data (sec)->relocs = internal_relocs;
3736 elf_section_data (sec)->this_hdr.contents = contents;
3737 symtab_hdr->contents = (unsigned char *) isymbuf;
3739 /* Fix the opcode. */
3740 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3741 bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1);
3743 /* Fix the relocation's type. */
3744 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3745 (ELF32_R_TYPE (irel->r_info)
3746 == (int) R_MN10300_GOT32)
3748 : (ELF32_R_TYPE (irel->r_info)
3749 == (int) R_MN10300_GOTOFF32)
3750 ? R_MN10300_GOTOFF16
3751 : (ELF32_R_TYPE (irel->r_info)
3752 == (int) R_MN10300_GOTPC32)
3753 ? R_MN10300_GOTPC16 :
3756 /* Delete two bytes of data. */
3757 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3758 irel->r_offset + 2, 2))
3761 /* That will change things, so, we should relax again.
3762 Note that this is not required, and it may be slow. */
3771 && symtab_hdr->contents != (unsigned char *) isymbuf)
3773 if (! link_info->keep_memory)
3777 /* Cache the symbols for elf_link_input_bfd. */
3778 symtab_hdr->contents = (unsigned char *) isymbuf;
3782 if (contents != NULL
3783 && elf_section_data (sec)->this_hdr.contents != contents)
3785 if (! link_info->keep_memory)
3789 /* Cache the section contents for elf_link_input_bfd. */
3790 elf_section_data (sec)->this_hdr.contents = contents;
3794 if (internal_relocs != NULL
3795 && elf_section_data (sec)->relocs != internal_relocs)
3796 free (internal_relocs);
3802 && symtab_hdr->contents != (unsigned char *) isymbuf)
3804 if (contents != NULL
3805 && elf_section_data (section)->this_hdr.contents != contents)
3807 if (internal_relocs != NULL
3808 && elf_section_data (section)->relocs != internal_relocs)
3809 free (internal_relocs);
3814 /* This is a version of bfd_generic_get_relocated_section_contents
3815 which uses mn10300_elf_relocate_section. */
3818 mn10300_elf_get_relocated_section_contents (bfd *output_bfd,
3819 struct bfd_link_info *link_info,
3820 struct bfd_link_order *link_order,
3822 bfd_boolean relocatable,
3825 Elf_Internal_Shdr *symtab_hdr;
3826 asection *input_section = link_order->u.indirect.section;
3827 bfd *input_bfd = input_section->owner;
3828 asection **sections = NULL;
3829 Elf_Internal_Rela *internal_relocs = NULL;
3830 Elf_Internal_Sym *isymbuf = NULL;
3832 /* We only need to handle the case of relaxing, or of having a
3833 particular set of section contents, specially. */
3835 || elf_section_data (input_section)->this_hdr.contents == NULL)
3836 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
3841 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3843 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
3844 (size_t) input_section->size);
3846 if ((input_section->flags & SEC_RELOC) != 0
3847 && input_section->reloc_count > 0)
3850 Elf_Internal_Sym *isym, *isymend;
3853 internal_relocs = _bfd_elf_link_read_relocs (input_bfd, input_section,
3855 if (internal_relocs == NULL)
3858 if (symtab_hdr->sh_info != 0)
3860 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
3861 if (isymbuf == NULL)
3862 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
3863 symtab_hdr->sh_info, 0,
3865 if (isymbuf == NULL)
3869 amt = symtab_hdr->sh_info;
3870 amt *= sizeof (asection *);
3871 sections = bfd_malloc (amt);
3872 if (sections == NULL && amt != 0)
3875 isymend = isymbuf + symtab_hdr->sh_info;
3876 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
3880 if (isym->st_shndx == SHN_UNDEF)
3881 isec = bfd_und_section_ptr;
3882 else if (isym->st_shndx == SHN_ABS)
3883 isec = bfd_abs_section_ptr;
3884 else if (isym->st_shndx == SHN_COMMON)
3885 isec = bfd_com_section_ptr;
3887 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
3892 if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd,
3893 input_section, data, internal_relocs,
3897 if (sections != NULL)
3899 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
3901 if (internal_relocs != elf_section_data (input_section)->relocs)
3902 free (internal_relocs);
3908 if (sections != NULL)
3910 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
3912 if (internal_relocs != NULL
3913 && internal_relocs != elf_section_data (input_section)->relocs)
3914 free (internal_relocs);
3918 /* Assorted hash table functions. */
3920 /* Initialize an entry in the link hash table. */
3922 /* Create an entry in an MN10300 ELF linker hash table. */
3924 static struct bfd_hash_entry *
3925 elf32_mn10300_link_hash_newfunc (struct bfd_hash_entry *entry,
3926 struct bfd_hash_table *table,
3929 struct elf32_mn10300_link_hash_entry *ret =
3930 (struct elf32_mn10300_link_hash_entry *) entry;
3932 /* Allocate the structure if it has not already been allocated by a
3935 ret = (struct elf32_mn10300_link_hash_entry *)
3936 bfd_hash_allocate (table, sizeof (* ret));
3938 return (struct bfd_hash_entry *) ret;
3940 /* Call the allocation method of the superclass. */
3941 ret = (struct elf32_mn10300_link_hash_entry *)
3942 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
3946 ret->direct_calls = 0;
3947 ret->stack_size = 0;
3949 ret->movm_stack_size = 0;
3954 return (struct bfd_hash_entry *) ret;
3957 /* Create an mn10300 ELF linker hash table. */
3959 static struct bfd_link_hash_table *
3960 elf32_mn10300_link_hash_table_create (bfd *abfd)
3962 struct elf32_mn10300_link_hash_table *ret;
3963 bfd_size_type amt = sizeof (* ret);
3965 ret = bfd_malloc (amt);
3969 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
3970 elf32_mn10300_link_hash_newfunc,
3971 sizeof (struct elf32_mn10300_link_hash_entry),
3979 amt = sizeof (struct elf_link_hash_table);
3980 ret->static_hash_table = bfd_malloc (amt);
3981 if (ret->static_hash_table == NULL)
3987 if (!_bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd,
3988 elf32_mn10300_link_hash_newfunc,
3989 sizeof (struct elf32_mn10300_link_hash_entry),
3992 free (ret->static_hash_table);
3996 return & ret->root.root;
3999 /* Free an mn10300 ELF linker hash table. */
4002 elf32_mn10300_link_hash_table_free (struct bfd_link_hash_table *hash)
4004 struct elf32_mn10300_link_hash_table *ret
4005 = (struct elf32_mn10300_link_hash_table *) hash;
4007 _bfd_generic_link_hash_table_free
4008 ((struct bfd_link_hash_table *) ret->static_hash_table);
4009 _bfd_generic_link_hash_table_free
4010 ((struct bfd_link_hash_table *) ret);
4013 static unsigned long
4014 elf_mn10300_mach (flagword flags)
4016 switch (flags & EF_MN10300_MACH)
4018 case E_MN10300_MACH_MN10300:
4020 return bfd_mach_mn10300;
4022 case E_MN10300_MACH_AM33:
4023 return bfd_mach_am33;
4025 case E_MN10300_MACH_AM33_2:
4026 return bfd_mach_am33_2;
4030 /* The final processing done just before writing out a MN10300 ELF object
4031 file. This gets the MN10300 architecture right based on the machine
4035 _bfd_mn10300_elf_final_write_processing (bfd *abfd,
4036 bfd_boolean linker ATTRIBUTE_UNUSED)
4040 switch (bfd_get_mach (abfd))
4043 case bfd_mach_mn10300:
4044 val = E_MN10300_MACH_MN10300;
4048 val = E_MN10300_MACH_AM33;
4051 case bfd_mach_am33_2:
4052 val = E_MN10300_MACH_AM33_2;
4056 elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH);
4057 elf_elfheader (abfd)->e_flags |= val;
4061 _bfd_mn10300_elf_object_p (bfd *abfd)
4063 bfd_default_set_arch_mach (abfd, bfd_arch_mn10300,
4064 elf_mn10300_mach (elf_elfheader (abfd)->e_flags));
4068 /* Merge backend specific data from an object file to the output
4069 object file when linking. */
4072 _bfd_mn10300_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4074 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4075 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4078 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
4079 && bfd_get_mach (obfd) < bfd_get_mach (ibfd))
4081 if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
4082 bfd_get_mach (ibfd)))
4089 #define PLT0_ENTRY_SIZE 15
4090 #define PLT_ENTRY_SIZE 20
4091 #define PIC_PLT_ENTRY_SIZE 24
4093 static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] =
4095 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */
4096 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */
4097 0xf0, 0xf4, /* jmp (a0) */
4100 static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] =
4102 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */
4103 0xf0, 0xf4, /* jmp (a0) */
4104 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
4105 0xdc, 0, 0, 0, 0, /* jmp .plt0 */
4108 static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] =
4110 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */
4111 0xf0, 0xf4, /* jmp (a0) */
4112 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
4113 0xf8, 0x22, 8, /* mov (8,a2),a0 */
4114 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */
4115 0xf0, 0xf4, /* jmp (a0) */
4118 /* Return size of the first PLT entry. */
4119 #define elf_mn10300_sizeof_plt0(info) \
4120 (info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE)
4122 /* Return size of a PLT entry. */
4123 #define elf_mn10300_sizeof_plt(info) \
4124 (info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE)
4126 /* Return offset of the PLT0 address in an absolute PLT entry. */
4127 #define elf_mn10300_plt_plt0_offset(info) 16
4129 /* Return offset of the linker in PLT0 entry. */
4130 #define elf_mn10300_plt0_linker_offset(info) 2
4132 /* Return offset of the GOT id in PLT0 entry. */
4133 #define elf_mn10300_plt0_gotid_offset(info) 9
4135 /* Return offset of the temporary in PLT entry. */
4136 #define elf_mn10300_plt_temp_offset(info) 8
4138 /* Return offset of the symbol in PLT entry. */
4139 #define elf_mn10300_plt_symbol_offset(info) 2
4141 /* Return offset of the relocation in PLT entry. */
4142 #define elf_mn10300_plt_reloc_offset(info) 11
4144 /* The name of the dynamic interpreter. This is put in the .interp
4147 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
4149 /* Create dynamic sections when linking against a dynamic object. */
4152 _bfd_mn10300_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
4156 const struct elf_backend_data * bed = get_elf_backend_data (abfd);
4159 switch (bed->s->arch_size)
4170 bfd_set_error (bfd_error_bad_value);
4174 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
4175 .rel[a].bss sections. */
4176 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4177 | SEC_LINKER_CREATED);
4179 s = bfd_make_section_with_flags (abfd,
4180 (bed->default_use_rela_p
4181 ? ".rela.plt" : ".rel.plt"),
4182 flags | SEC_READONLY);
4184 || ! bfd_set_section_alignment (abfd, s, ptralign))
4187 if (! _bfd_mn10300_elf_create_got_section (abfd, info))
4191 const char * secname;
4196 for (sec = abfd->sections; sec; sec = sec->next)
4198 secflags = bfd_get_section_flags (abfd, sec);
4199 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
4200 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
4203 secname = bfd_get_section_name (abfd, sec);
4204 relname = bfd_malloc (strlen (secname) + 6);
4205 strcpy (relname, ".rela");
4206 strcat (relname, secname);
4208 s = bfd_make_section_with_flags (abfd, relname,
4209 flags | SEC_READONLY);
4211 || ! bfd_set_section_alignment (abfd, s, ptralign))
4216 if (bed->want_dynbss)
4218 /* The .dynbss section is a place to put symbols which are defined
4219 by dynamic objects, are referenced by regular objects, and are
4220 not functions. We must allocate space for them in the process
4221 image and use a R_*_COPY reloc to tell the dynamic linker to
4222 initialize them at run time. The linker script puts the .dynbss
4223 section into the .bss section of the final image. */
4224 s = bfd_make_section_with_flags (abfd, ".dynbss",
4225 SEC_ALLOC | SEC_LINKER_CREATED);
4229 /* The .rel[a].bss section holds copy relocs. This section is not
4230 normally needed. We need to create it here, though, so that the
4231 linker will map it to an output section. We can't just create it
4232 only if we need it, because we will not know whether we need it
4233 until we have seen all the input files, and the first time the
4234 main linker code calls BFD after examining all the input files
4235 (size_dynamic_sections) the input sections have already been
4236 mapped to the output sections. If the section turns out not to
4237 be needed, we can discard it later. We will never need this
4238 section when generating a shared object, since they do not use
4242 s = bfd_make_section_with_flags (abfd,
4243 (bed->default_use_rela_p
4244 ? ".rela.bss" : ".rel.bss"),
4245 flags | SEC_READONLY);
4247 || ! bfd_set_section_alignment (abfd, s, ptralign))
4255 /* Adjust a symbol defined by a dynamic object and referenced by a
4256 regular object. The current definition is in some section of the
4257 dynamic object, but we're not including those sections. We have to
4258 change the definition to something the rest of the link can
4262 _bfd_mn10300_elf_adjust_dynamic_symbol (struct bfd_link_info * info,
4263 struct elf_link_hash_entry * h)
4268 dynobj = elf_hash_table (info)->dynobj;
4270 /* Make sure we know what is going on here. */
4271 BFD_ASSERT (dynobj != NULL
4273 || h->u.weakdef != NULL
4276 && !h->def_regular)));
4278 /* If this is a function, put it in the procedure linkage table. We
4279 will fill in the contents of the procedure linkage table later,
4280 when we know the address of the .got section. */
4281 if (h->type == STT_FUNC
4288 /* This case can occur if we saw a PLT reloc in an input
4289 file, but the symbol was never referred to by a dynamic
4290 object. In such a case, we don't actually need to build
4291 a procedure linkage table, and we can just do a REL32
4293 BFD_ASSERT (h->needs_plt);
4297 /* Make sure this symbol is output as a dynamic symbol. */
4298 if (h->dynindx == -1)
4300 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4304 s = bfd_get_section_by_name (dynobj, ".plt");
4305 BFD_ASSERT (s != NULL);
4307 /* If this is the first .plt entry, make room for the special
4310 s->size += elf_mn10300_sizeof_plt0 (info);
4312 /* If this symbol is not defined in a regular file, and we are
4313 not generating a shared library, then set the symbol to this
4314 location in the .plt. This is required to make function
4315 pointers compare as equal between the normal executable and
4316 the shared library. */
4320 h->root.u.def.section = s;
4321 h->root.u.def.value = s->size;
4324 h->plt.offset = s->size;
4326 /* Make room for this entry. */
4327 s->size += elf_mn10300_sizeof_plt (info);
4329 /* We also need to make an entry in the .got.plt section, which
4330 will be placed in the .got section by the linker script. */
4331 s = bfd_get_section_by_name (dynobj, ".got.plt");
4332 BFD_ASSERT (s != NULL);
4335 /* We also need to make an entry in the .rela.plt section. */
4336 s = bfd_get_section_by_name (dynobj, ".rela.plt");
4337 BFD_ASSERT (s != NULL);
4338 s->size += sizeof (Elf32_External_Rela);
4343 /* If this is a weak symbol, and there is a real definition, the
4344 processor independent code will have arranged for us to see the
4345 real definition first, and we can just use the same value. */
4346 if (h->u.weakdef != NULL)
4348 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4349 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4350 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4351 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4355 /* This is a reference to a symbol defined by a dynamic object which
4356 is not a function. */
4358 /* If we are creating a shared library, we must presume that the
4359 only references to the symbol are via the global offset table.
4360 For such cases we need not do anything here; the relocations will
4361 be handled correctly by relocate_section. */
4365 /* If there are no references to this symbol that do not use the
4366 GOT, we don't need to generate a copy reloc. */
4367 if (!h->non_got_ref)
4372 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4373 h->root.root.string);
4377 /* We must allocate the symbol in our .dynbss section, which will
4378 become part of the .bss section of the executable. There will be
4379 an entry for this symbol in the .dynsym section. The dynamic
4380 object will contain position independent code, so all references
4381 from the dynamic object to this symbol will go through the global
4382 offset table. The dynamic linker will use the .dynsym entry to
4383 determine the address it must put in the global offset table, so
4384 both the dynamic object and the regular object will refer to the
4385 same memory location for the variable. */
4387 s = bfd_get_section_by_name (dynobj, ".dynbss");
4388 BFD_ASSERT (s != NULL);
4390 /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to
4391 copy the initial value out of the dynamic object and into the
4392 runtime process image. We need to remember the offset into the
4393 .rela.bss section we are going to use. */
4394 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4398 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
4399 BFD_ASSERT (srel != NULL);
4400 srel->size += sizeof (Elf32_External_Rela);
4404 return _bfd_elf_adjust_dynamic_copy (h, s);
4407 /* Set the sizes of the dynamic sections. */
4410 _bfd_mn10300_elf_size_dynamic_sections (bfd * output_bfd,
4411 struct bfd_link_info * info)
4417 bfd_boolean reltext;
4419 dynobj = elf_hash_table (info)->dynobj;
4420 BFD_ASSERT (dynobj != NULL);
4422 if (elf_hash_table (info)->dynamic_sections_created)
4424 /* Set the contents of the .interp section to the interpreter. */
4425 if (info->executable)
4427 s = bfd_get_section_by_name (dynobj, ".interp");
4428 BFD_ASSERT (s != NULL);
4429 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
4430 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4435 /* We may have created entries in the .rela.got section.
4436 However, if we are not creating the dynamic sections, we will
4437 not actually use these entries. Reset the size of .rela.got,
4438 which will cause it to get stripped from the output file
4440 s = bfd_get_section_by_name (dynobj, ".rela.got");
4445 /* The check_relocs and adjust_dynamic_symbol entry points have
4446 determined the sizes of the various dynamic sections. Allocate
4451 for (s = dynobj->sections; s != NULL; s = s->next)
4455 if ((s->flags & SEC_LINKER_CREATED) == 0)
4458 /* It's OK to base decisions on the section name, because none
4459 of the dynobj section names depend upon the input files. */
4460 name = bfd_get_section_name (dynobj, s);
4462 if (streq (name, ".plt"))
4464 /* Remember whether there is a PLT. */
4467 else if (CONST_STRNEQ (name, ".rela"))
4473 /* Remember whether there are any reloc sections other
4475 if (! streq (name, ".rela.plt"))
4477 const char * outname;
4481 /* If this relocation section applies to a read only
4482 section, then we probably need a DT_TEXTREL
4483 entry. The entries in the .rela.plt section
4484 really apply to the .got section, which we
4485 created ourselves and so know is not readonly. */
4486 outname = bfd_get_section_name (output_bfd,
4488 target = bfd_get_section_by_name (output_bfd, outname + 5);
4490 && (target->flags & SEC_READONLY) != 0
4491 && (target->flags & SEC_ALLOC) != 0)
4495 /* We use the reloc_count field as a counter if we need
4496 to copy relocs into the output file. */
4500 else if (! CONST_STRNEQ (name, ".got")
4501 && ! streq (name, ".dynbss"))
4502 /* It's not one of our sections, so don't allocate space. */
4507 /* If we don't need this section, strip it from the
4508 output file. This is mostly to handle .rela.bss and
4509 .rela.plt. We must create both sections in
4510 create_dynamic_sections, because they must be created
4511 before the linker maps input sections to output
4512 sections. The linker does that before
4513 adjust_dynamic_symbol is called, and it is that
4514 function which decides whether anything needs to go
4515 into these sections. */
4516 s->flags |= SEC_EXCLUDE;
4520 if ((s->flags & SEC_HAS_CONTENTS) == 0)
4523 /* Allocate memory for the section contents. We use bfd_zalloc
4524 here in case unused entries are not reclaimed before the
4525 section's contents are written out. This should not happen,
4526 but this way if it does, we get a R_MN10300_NONE reloc
4527 instead of garbage. */
4528 s->contents = bfd_zalloc (dynobj, s->size);
4529 if (s->contents == NULL)
4533 if (elf_hash_table (info)->dynamic_sections_created)
4535 /* Add some entries to the .dynamic section. We fill in the
4536 values later, in _bfd_mn10300_elf_finish_dynamic_sections,
4537 but we must add the entries now so that we get the correct
4538 size for the .dynamic section. The DT_DEBUG entry is filled
4539 in by the dynamic linker and used by the debugger. */
4542 if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0))
4548 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)
4549 || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0)
4550 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
4551 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0))
4557 if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0)
4558 || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0)
4559 || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT,
4560 sizeof (Elf32_External_Rela)))
4566 if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0))
4574 /* Finish up dynamic symbol handling. We set the contents of various
4575 dynamic sections here. */
4578 _bfd_mn10300_elf_finish_dynamic_symbol (bfd * output_bfd,
4579 struct bfd_link_info * info,
4580 struct elf_link_hash_entry * h,
4581 Elf_Internal_Sym * sym)
4585 dynobj = elf_hash_table (info)->dynobj;
4587 if (h->plt.offset != (bfd_vma) -1)
4594 Elf_Internal_Rela rel;
4596 /* This symbol has an entry in the procedure linkage table. Set
4599 BFD_ASSERT (h->dynindx != -1);
4601 splt = bfd_get_section_by_name (dynobj, ".plt");
4602 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
4603 srel = bfd_get_section_by_name (dynobj, ".rela.plt");
4604 BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
4606 /* Get the index in the procedure linkage table which
4607 corresponds to this symbol. This is the index of this symbol
4608 in all the symbols for which we are making plt entries. The
4609 first entry in the procedure linkage table is reserved. */
4610 plt_index = ((h->plt.offset - elf_mn10300_sizeof_plt0 (info))
4611 / elf_mn10300_sizeof_plt (info));
4613 /* Get the offset into the .got table of the entry that
4614 corresponds to this function. Each .got entry is 4 bytes.
4615 The first three are reserved. */
4616 got_offset = (plt_index + 3) * 4;
4618 /* Fill in the entry in the procedure linkage table. */
4621 memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry,
4622 elf_mn10300_sizeof_plt (info));
4623 bfd_put_32 (output_bfd,
4624 (sgot->output_section->vma
4625 + sgot->output_offset
4627 (splt->contents + h->plt.offset
4628 + elf_mn10300_plt_symbol_offset (info)));
4630 bfd_put_32 (output_bfd,
4631 (1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)),
4632 (splt->contents + h->plt.offset
4633 + elf_mn10300_plt_plt0_offset (info)));
4637 memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry,
4638 elf_mn10300_sizeof_plt (info));
4640 bfd_put_32 (output_bfd, got_offset,
4641 (splt->contents + h->plt.offset
4642 + elf_mn10300_plt_symbol_offset (info)));
4645 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
4646 (splt->contents + h->plt.offset
4647 + elf_mn10300_plt_reloc_offset (info)));
4649 /* Fill in the entry in the global offset table. */
4650 bfd_put_32 (output_bfd,
4651 (splt->output_section->vma
4652 + splt->output_offset
4654 + elf_mn10300_plt_temp_offset (info)),
4655 sgot->contents + got_offset);
4657 /* Fill in the entry in the .rela.plt section. */
4658 rel.r_offset = (sgot->output_section->vma
4659 + sgot->output_offset
4661 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT);
4663 bfd_elf32_swap_reloca_out (output_bfd, &rel,
4664 (bfd_byte *) ((Elf32_External_Rela *) srel->contents
4667 if (!h->def_regular)
4668 /* Mark the symbol as undefined, rather than as defined in
4669 the .plt section. Leave the value alone. */
4670 sym->st_shndx = SHN_UNDEF;
4673 if (h->got.offset != (bfd_vma) -1)
4677 Elf_Internal_Rela rel;
4679 /* This symbol has an entry in the global offset table. Set it up. */
4680 sgot = bfd_get_section_by_name (dynobj, ".got");
4681 srel = bfd_get_section_by_name (dynobj, ".rela.got");
4682 BFD_ASSERT (sgot != NULL && srel != NULL);
4684 rel.r_offset = (sgot->output_section->vma
4685 + sgot->output_offset
4686 + (h->got.offset & ~1));
4688 /* If this is a -Bsymbolic link, and the symbol is defined
4689 locally, we just want to emit a RELATIVE reloc. Likewise if
4690 the symbol was forced to be local because of a version file.
4691 The entry in the global offset table will already have been
4692 initialized in the relocate_section function. */
4694 && (info->symbolic || h->dynindx == -1)
4697 rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
4698 rel.r_addend = (h->root.u.def.value
4699 + h->root.u.def.section->output_section->vma
4700 + h->root.u.def.section->output_offset);
4704 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
4705 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT);
4709 bfd_elf32_swap_reloca_out (output_bfd, &rel,
4710 (bfd_byte *) ((Elf32_External_Rela *) srel->contents
4711 + srel->reloc_count));
4712 ++ srel->reloc_count;
4718 Elf_Internal_Rela rel;
4720 /* This symbol needs a copy reloc. Set it up. */
4721 BFD_ASSERT (h->dynindx != -1
4722 && (h->root.type == bfd_link_hash_defined
4723 || h->root.type == bfd_link_hash_defweak));
4725 s = bfd_get_section_by_name (h->root.u.def.section->owner,
4727 BFD_ASSERT (s != NULL);
4729 rel.r_offset = (h->root.u.def.value
4730 + h->root.u.def.section->output_section->vma
4731 + h->root.u.def.section->output_offset);
4732 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY);
4734 bfd_elf32_swap_reloca_out (output_bfd, & rel,
4735 (bfd_byte *) ((Elf32_External_Rela *) s->contents
4740 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4741 if (streq (h->root.root.string, "_DYNAMIC")
4742 || h == elf_hash_table (info)->hgot)
4743 sym->st_shndx = SHN_ABS;
4748 /* Finish up the dynamic sections. */
4751 _bfd_mn10300_elf_finish_dynamic_sections (bfd * output_bfd,
4752 struct bfd_link_info * info)
4758 dynobj = elf_hash_table (info)->dynobj;
4760 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
4761 BFD_ASSERT (sgot != NULL);
4762 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4764 if (elf_hash_table (info)->dynamic_sections_created)
4767 Elf32_External_Dyn * dyncon;
4768 Elf32_External_Dyn * dynconend;
4770 BFD_ASSERT (sdyn != NULL);
4772 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4773 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4775 for (; dyncon < dynconend; dyncon++)
4777 Elf_Internal_Dyn dyn;
4781 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4795 s = bfd_get_section_by_name (output_bfd, name);
4796 BFD_ASSERT (s != NULL);
4797 dyn.d_un.d_ptr = s->vma;
4798 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4802 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
4803 BFD_ASSERT (s != NULL);
4804 dyn.d_un.d_val = s->size;
4805 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4809 /* My reading of the SVR4 ABI indicates that the
4810 procedure linkage table relocs (DT_JMPREL) should be
4811 included in the overall relocs (DT_RELA). This is
4812 what Solaris does. However, UnixWare can not handle
4813 that case. Therefore, we override the DT_RELASZ entry
4814 here to make it not include the JMPREL relocs. Since
4815 the linker script arranges for .rela.plt to follow all
4816 other relocation sections, we don't have to worry
4817 about changing the DT_RELA entry. */
4818 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
4820 dyn.d_un.d_val -= s->size;
4821 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4826 /* Fill in the first entry in the procedure linkage table. */
4827 splt = bfd_get_section_by_name (dynobj, ".plt");
4828 if (splt && splt->size > 0)
4832 memcpy (splt->contents, elf_mn10300_pic_plt_entry,
4833 elf_mn10300_sizeof_plt (info));
4837 memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE);
4838 bfd_put_32 (output_bfd,
4839 sgot->output_section->vma + sgot->output_offset + 4,
4840 splt->contents + elf_mn10300_plt0_gotid_offset (info));
4841 bfd_put_32 (output_bfd,
4842 sgot->output_section->vma + sgot->output_offset + 8,
4843 splt->contents + elf_mn10300_plt0_linker_offset (info));
4846 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4847 really seem like the right value. */
4848 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
4852 /* Fill in the first three entries in the global offset table. */
4856 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
4858 bfd_put_32 (output_bfd,
4859 sdyn->output_section->vma + sdyn->output_offset,
4861 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
4862 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
4865 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
4870 /* Classify relocation types, such that combreloc can sort them
4873 static enum elf_reloc_type_class
4874 _bfd_mn10300_elf_reloc_type_class (const Elf_Internal_Rela *rela)
4876 switch ((int) ELF32_R_TYPE (rela->r_info))
4878 case R_MN10300_RELATIVE: return reloc_class_relative;
4879 case R_MN10300_JMP_SLOT: return reloc_class_plt;
4880 case R_MN10300_COPY: return reloc_class_copy;
4881 default: return reloc_class_normal;
4886 #define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec
4887 #define TARGET_LITTLE_NAME "elf32-mn10300"
4888 #define ELF_ARCH bfd_arch_mn10300
4889 #define ELF_TARGET_ID MN10300_ELF_DATA
4890 #define ELF_MACHINE_CODE EM_MN10300
4891 #define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300
4892 #define ELF_MAXPAGESIZE 0x1000
4895 #define elf_info_to_howto mn10300_info_to_howto
4896 #define elf_info_to_howto_rel 0
4897 #define elf_backend_can_gc_sections 1
4898 #define elf_backend_rela_normal 1
4899 #define elf_backend_check_relocs mn10300_elf_check_relocs
4900 #define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook
4901 #define elf_backend_relocate_section mn10300_elf_relocate_section
4902 #define bfd_elf32_bfd_relax_section mn10300_elf_relax_section
4903 #define bfd_elf32_bfd_get_relocated_section_contents \
4904 mn10300_elf_get_relocated_section_contents
4905 #define bfd_elf32_bfd_link_hash_table_create \
4906 elf32_mn10300_link_hash_table_create
4907 #define bfd_elf32_bfd_link_hash_table_free \
4908 elf32_mn10300_link_hash_table_free
4910 #ifndef elf_symbol_leading_char
4911 #define elf_symbol_leading_char '_'
4914 /* So we can set bits in e_flags. */
4915 #define elf_backend_final_write_processing \
4916 _bfd_mn10300_elf_final_write_processing
4917 #define elf_backend_object_p _bfd_mn10300_elf_object_p
4919 #define bfd_elf32_bfd_merge_private_bfd_data \
4920 _bfd_mn10300_elf_merge_private_bfd_data
4922 #define elf_backend_can_gc_sections 1
4923 #define elf_backend_create_dynamic_sections \
4924 _bfd_mn10300_elf_create_dynamic_sections
4925 #define elf_backend_adjust_dynamic_symbol \
4926 _bfd_mn10300_elf_adjust_dynamic_symbol
4927 #define elf_backend_size_dynamic_sections \
4928 _bfd_mn10300_elf_size_dynamic_sections
4929 #define elf_backend_omit_section_dynsym \
4930 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4931 #define elf_backend_finish_dynamic_symbol \
4932 _bfd_mn10300_elf_finish_dynamic_symbol
4933 #define elf_backend_finish_dynamic_sections \
4934 _bfd_mn10300_elf_finish_dynamic_sections
4936 #define elf_backend_reloc_type_class \
4937 _bfd_mn10300_elf_reloc_type_class
4939 #define elf_backend_want_got_plt 1
4940 #define elf_backend_plt_readonly 1
4941 #define elf_backend_want_plt_sym 0
4942 #define elf_backend_got_header_size 12
4944 #include "elf32-target.h"