1 /* Matsushita 10300 specific support for 32-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3 2006, 2007 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 ((struct elf32_mn10300_link_hash_table *) ((p)->hash))
103 #define elf32_mn10300_link_hash_traverse(table, func, info) \
104 (elf_link_hash_traverse \
106 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
109 static reloc_howto_type elf_mn10300_howto_table
[] =
111 /* Dummy relocation. Does nothing. */
112 HOWTO (R_MN10300_NONE
,
118 complain_overflow_bitfield
,
119 bfd_elf_generic_reloc
,
125 /* Standard 32 bit reloc. */
132 complain_overflow_bitfield
,
133 bfd_elf_generic_reloc
,
139 /* Standard 16 bit reloc. */
146 complain_overflow_bitfield
,
147 bfd_elf_generic_reloc
,
153 /* Standard 8 bit reloc. */
160 complain_overflow_bitfield
,
161 bfd_elf_generic_reloc
,
167 /* Standard 32bit pc-relative reloc. */
168 HOWTO (R_MN10300_PCREL32
,
174 complain_overflow_bitfield
,
175 bfd_elf_generic_reloc
,
181 /* Standard 16bit pc-relative reloc. */
182 HOWTO (R_MN10300_PCREL16
,
188 complain_overflow_bitfield
,
189 bfd_elf_generic_reloc
,
195 /* Standard 8 pc-relative reloc. */
196 HOWTO (R_MN10300_PCREL8
,
202 complain_overflow_bitfield
,
203 bfd_elf_generic_reloc
,
210 /* GNU extension to record C++ vtable hierarchy. */
211 HOWTO (R_MN10300_GNU_VTINHERIT
, /* type */
213 0, /* size (0 = byte, 1 = short, 2 = long) */
215 FALSE
, /* pc_relative */
217 complain_overflow_dont
, /* complain_on_overflow */
218 NULL
, /* special_function */
219 "R_MN10300_GNU_VTINHERIT", /* name */
220 FALSE
, /* partial_inplace */
223 FALSE
), /* pcrel_offset */
225 /* GNU extension to record C++ vtable member usage */
226 HOWTO (R_MN10300_GNU_VTENTRY
, /* type */
228 0, /* size (0 = byte, 1 = short, 2 = long) */
230 FALSE
, /* pc_relative */
232 complain_overflow_dont
, /* complain_on_overflow */
233 NULL
, /* special_function */
234 "R_MN10300_GNU_VTENTRY", /* name */
235 FALSE
, /* partial_inplace */
238 FALSE
), /* pcrel_offset */
240 /* Standard 24 bit reloc. */
247 complain_overflow_bitfield
,
248 bfd_elf_generic_reloc
,
254 HOWTO (R_MN10300_GOTPC32
, /* type */
256 2, /* size (0 = byte, 1 = short, 2 = long) */
258 TRUE
, /* pc_relative */
260 complain_overflow_bitfield
, /* complain_on_overflow */
261 bfd_elf_generic_reloc
, /* */
262 "R_MN10300_GOTPC32", /* name */
263 FALSE
, /* partial_inplace */
264 0xffffffff, /* src_mask */
265 0xffffffff, /* dst_mask */
266 TRUE
), /* pcrel_offset */
268 HOWTO (R_MN10300_GOTPC16
, /* type */
270 1, /* size (0 = byte, 1 = short, 2 = long) */
272 TRUE
, /* pc_relative */
274 complain_overflow_bitfield
, /* complain_on_overflow */
275 bfd_elf_generic_reloc
, /* */
276 "R_MN10300_GOTPC16", /* name */
277 FALSE
, /* partial_inplace */
278 0xffff, /* src_mask */
279 0xffff, /* dst_mask */
280 TRUE
), /* pcrel_offset */
282 HOWTO (R_MN10300_GOTOFF32
, /* type */
284 2, /* size (0 = byte, 1 = short, 2 = long) */
286 FALSE
, /* pc_relative */
288 complain_overflow_bitfield
, /* complain_on_overflow */
289 bfd_elf_generic_reloc
, /* */
290 "R_MN10300_GOTOFF32", /* name */
291 FALSE
, /* partial_inplace */
292 0xffffffff, /* src_mask */
293 0xffffffff, /* dst_mask */
294 FALSE
), /* pcrel_offset */
296 HOWTO (R_MN10300_GOTOFF24
, /* type */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
300 FALSE
, /* pc_relative */
302 complain_overflow_bitfield
, /* complain_on_overflow */
303 bfd_elf_generic_reloc
, /* */
304 "R_MN10300_GOTOFF24", /* name */
305 FALSE
, /* partial_inplace */
306 0xffffff, /* src_mask */
307 0xffffff, /* dst_mask */
308 FALSE
), /* pcrel_offset */
310 HOWTO (R_MN10300_GOTOFF16
, /* type */
312 1, /* size (0 = byte, 1 = short, 2 = long) */
314 FALSE
, /* pc_relative */
316 complain_overflow_bitfield
, /* complain_on_overflow */
317 bfd_elf_generic_reloc
, /* */
318 "R_MN10300_GOTOFF16", /* name */
319 FALSE
, /* partial_inplace */
320 0xffff, /* src_mask */
321 0xffff, /* dst_mask */
322 FALSE
), /* pcrel_offset */
324 HOWTO (R_MN10300_PLT32
, /* type */
326 2, /* size (0 = byte, 1 = short, 2 = long) */
328 TRUE
, /* pc_relative */
330 complain_overflow_bitfield
, /* complain_on_overflow */
331 bfd_elf_generic_reloc
, /* */
332 "R_MN10300_PLT32", /* name */
333 FALSE
, /* partial_inplace */
334 0xffffffff, /* src_mask */
335 0xffffffff, /* dst_mask */
336 TRUE
), /* pcrel_offset */
338 HOWTO (R_MN10300_PLT16
, /* type */
340 1, /* size (0 = byte, 1 = short, 2 = long) */
342 TRUE
, /* pc_relative */
344 complain_overflow_bitfield
, /* complain_on_overflow */
345 bfd_elf_generic_reloc
, /* */
346 "R_MN10300_PLT16", /* name */
347 FALSE
, /* partial_inplace */
348 0xffff, /* src_mask */
349 0xffff, /* dst_mask */
350 TRUE
), /* pcrel_offset */
352 HOWTO (R_MN10300_GOT32
, /* type */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
356 FALSE
, /* pc_relative */
358 complain_overflow_bitfield
, /* complain_on_overflow */
359 bfd_elf_generic_reloc
, /* */
360 "R_MN10300_GOT32", /* name */
361 FALSE
, /* partial_inplace */
362 0xffffffff, /* src_mask */
363 0xffffffff, /* dst_mask */
364 FALSE
), /* pcrel_offset */
366 HOWTO (R_MN10300_GOT24
, /* type */
368 2, /* size (0 = byte, 1 = short, 2 = long) */
370 FALSE
, /* pc_relative */
372 complain_overflow_bitfield
, /* complain_on_overflow */
373 bfd_elf_generic_reloc
, /* */
374 "R_MN10300_GOT24", /* name */
375 FALSE
, /* partial_inplace */
376 0xffffffff, /* src_mask */
377 0xffffffff, /* dst_mask */
378 FALSE
), /* pcrel_offset */
380 HOWTO (R_MN10300_GOT16
, /* type */
382 1, /* size (0 = byte, 1 = short, 2 = long) */
384 FALSE
, /* pc_relative */
386 complain_overflow_bitfield
, /* complain_on_overflow */
387 bfd_elf_generic_reloc
, /* */
388 "R_MN10300_GOT16", /* name */
389 FALSE
, /* partial_inplace */
390 0xffffffff, /* src_mask */
391 0xffffffff, /* dst_mask */
392 FALSE
), /* pcrel_offset */
394 HOWTO (R_MN10300_COPY
, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 FALSE
, /* pc_relative */
400 complain_overflow_bitfield
, /* complain_on_overflow */
401 bfd_elf_generic_reloc
, /* */
402 "R_MN10300_COPY", /* name */
403 FALSE
, /* partial_inplace */
404 0xffffffff, /* src_mask */
405 0xffffffff, /* dst_mask */
406 FALSE
), /* pcrel_offset */
408 HOWTO (R_MN10300_GLOB_DAT
, /* type */
410 2, /* size (0 = byte, 1 = short, 2 = long) */
412 FALSE
, /* pc_relative */
414 complain_overflow_bitfield
, /* complain_on_overflow */
415 bfd_elf_generic_reloc
, /* */
416 "R_MN10300_GLOB_DAT", /* name */
417 FALSE
, /* partial_inplace */
418 0xffffffff, /* src_mask */
419 0xffffffff, /* dst_mask */
420 FALSE
), /* pcrel_offset */
422 HOWTO (R_MN10300_JMP_SLOT
, /* type */
424 2, /* size (0 = byte, 1 = short, 2 = long) */
426 FALSE
, /* pc_relative */
428 complain_overflow_bitfield
, /* complain_on_overflow */
429 bfd_elf_generic_reloc
, /* */
430 "R_MN10300_JMP_SLOT", /* name */
431 FALSE
, /* partial_inplace */
432 0xffffffff, /* src_mask */
433 0xffffffff, /* dst_mask */
434 FALSE
), /* pcrel_offset */
436 HOWTO (R_MN10300_RELATIVE
, /* type */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
440 FALSE
, /* pc_relative */
442 complain_overflow_bitfield
, /* complain_on_overflow */
443 bfd_elf_generic_reloc
, /* */
444 "R_MN10300_RELATIVE", /* name */
445 FALSE
, /* partial_inplace */
446 0xffffffff, /* src_mask */
447 0xffffffff, /* dst_mask */
448 FALSE
), /* pcrel_offset */
460 HOWTO (R_MN10300_SYM_DIFF
, /* type */
462 2, /* size (0 = byte, 1 = short, 2 = long) */
464 FALSE
, /* pc_relative */
466 complain_overflow_dont
,/* complain_on_overflow */
467 NULL
, /* special handler. */
468 "R_MN10300_SYM_DIFF", /* name */
469 FALSE
, /* partial_inplace */
470 0xffffffff, /* src_mask */
471 0xffffffff, /* dst_mask */
472 FALSE
), /* pcrel_offset */
474 HOWTO (R_MN10300_ALIGN
, /* type */
476 0, /* size (0 = byte, 1 = short, 2 = long) */
478 FALSE
, /* pc_relative */
480 complain_overflow_dont
,/* complain_on_overflow */
481 NULL
, /* special handler. */
482 "R_MN10300_ALIGN", /* name */
483 FALSE
, /* partial_inplace */
486 FALSE
) /* pcrel_offset */
489 struct mn10300_reloc_map
491 bfd_reloc_code_real_type bfd_reloc_val
;
492 unsigned char elf_reloc_val
;
495 static const struct mn10300_reloc_map mn10300_reloc_map
[] =
497 { BFD_RELOC_NONE
, R_MN10300_NONE
, },
498 { BFD_RELOC_32
, R_MN10300_32
, },
499 { BFD_RELOC_16
, R_MN10300_16
, },
500 { BFD_RELOC_8
, R_MN10300_8
, },
501 { BFD_RELOC_32_PCREL
, R_MN10300_PCREL32
, },
502 { BFD_RELOC_16_PCREL
, R_MN10300_PCREL16
, },
503 { BFD_RELOC_8_PCREL
, R_MN10300_PCREL8
, },
504 { BFD_RELOC_24
, R_MN10300_24
, },
505 { BFD_RELOC_VTABLE_INHERIT
, R_MN10300_GNU_VTINHERIT
},
506 { BFD_RELOC_VTABLE_ENTRY
, R_MN10300_GNU_VTENTRY
},
507 { BFD_RELOC_32_GOT_PCREL
, R_MN10300_GOTPC32
},
508 { BFD_RELOC_16_GOT_PCREL
, R_MN10300_GOTPC16
},
509 { BFD_RELOC_32_GOTOFF
, R_MN10300_GOTOFF32
},
510 { BFD_RELOC_MN10300_GOTOFF24
, R_MN10300_GOTOFF24
},
511 { BFD_RELOC_16_GOTOFF
, R_MN10300_GOTOFF16
},
512 { BFD_RELOC_32_PLT_PCREL
, R_MN10300_PLT32
},
513 { BFD_RELOC_16_PLT_PCREL
, R_MN10300_PLT16
},
514 { BFD_RELOC_MN10300_GOT32
, R_MN10300_GOT32
},
515 { BFD_RELOC_MN10300_GOT24
, R_MN10300_GOT24
},
516 { BFD_RELOC_MN10300_GOT16
, R_MN10300_GOT16
},
517 { BFD_RELOC_MN10300_COPY
, R_MN10300_COPY
},
518 { BFD_RELOC_MN10300_GLOB_DAT
, R_MN10300_GLOB_DAT
},
519 { BFD_RELOC_MN10300_JMP_SLOT
, R_MN10300_JMP_SLOT
},
520 { BFD_RELOC_MN10300_RELATIVE
, R_MN10300_RELATIVE
},
521 { BFD_RELOC_MN10300_SYM_DIFF
, R_MN10300_SYM_DIFF
},
522 { BFD_RELOC_MN10300_ALIGN
, R_MN10300_ALIGN
}
525 /* Create the GOT section. */
528 _bfd_mn10300_elf_create_got_section (bfd
* abfd
,
529 struct bfd_link_info
* info
)
534 struct elf_link_hash_entry
* h
;
535 const struct elf_backend_data
* bed
= get_elf_backend_data (abfd
);
538 /* This function may be called more than once. */
539 if (bfd_get_section_by_name (abfd
, ".got") != NULL
)
542 switch (bed
->s
->arch_size
)
553 bfd_set_error (bfd_error_bad_value
);
557 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
558 | SEC_LINKER_CREATED
);
561 pltflags
|= SEC_CODE
;
562 if (bed
->plt_not_loaded
)
563 pltflags
&= ~ (SEC_LOAD
| SEC_HAS_CONTENTS
);
564 if (bed
->plt_readonly
)
565 pltflags
|= SEC_READONLY
;
567 s
= bfd_make_section_with_flags (abfd
, ".plt", pltflags
);
569 || ! bfd_set_section_alignment (abfd
, s
, bed
->plt_alignment
))
572 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
574 if (bed
->want_plt_sym
)
576 h
= _bfd_elf_define_linkage_sym (abfd
, info
, s
,
577 "_PROCEDURE_LINKAGE_TABLE_");
578 elf_hash_table (info
)->hplt
= h
;
583 s
= bfd_make_section_with_flags (abfd
, ".got", flags
);
585 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
588 if (bed
->want_got_plt
)
590 s
= bfd_make_section_with_flags (abfd
, ".got.plt", flags
);
592 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
596 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
597 (or .got.plt) section. We don't do this in the linker script
598 because we don't want to define the symbol if we are not creating
599 a global offset table. */
600 h
= _bfd_elf_define_linkage_sym (abfd
, info
, s
, "_GLOBAL_OFFSET_TABLE_");
601 elf_hash_table (info
)->hgot
= h
;
605 /* The first bit of the global offset table is the header. */
606 s
->size
+= bed
->got_header_size
;
611 static reloc_howto_type
*
612 bfd_elf32_bfd_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
613 bfd_reloc_code_real_type code
)
617 for (i
= ARRAY_SIZE (mn10300_reloc_map
); i
--;)
618 if (mn10300_reloc_map
[i
].bfd_reloc_val
== code
)
619 return &elf_mn10300_howto_table
[mn10300_reloc_map
[i
].elf_reloc_val
];
624 static reloc_howto_type
*
625 bfd_elf32_bfd_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
630 for (i
= ARRAY_SIZE (elf_mn10300_howto_table
); i
--;)
631 if (elf_mn10300_howto_table
[i
].name
!= NULL
632 && strcasecmp (elf_mn10300_howto_table
[i
].name
, r_name
) == 0)
633 return elf_mn10300_howto_table
+ i
;
638 /* Set the howto pointer for an MN10300 ELF reloc. */
641 mn10300_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
643 Elf_Internal_Rela
*dst
)
647 r_type
= ELF32_R_TYPE (dst
->r_info
);
648 BFD_ASSERT (r_type
< (unsigned int) R_MN10300_MAX
);
649 cache_ptr
->howto
= elf_mn10300_howto_table
+ r_type
;
652 /* Look through the relocs for a section during the first phase.
653 Since we don't do .gots or .plts, we just need to consider the
654 virtual table relocs for gc. */
657 mn10300_elf_check_relocs (bfd
*abfd
,
658 struct bfd_link_info
*info
,
660 const Elf_Internal_Rela
*relocs
)
662 bfd_boolean sym_diff_reloc_seen
;
663 Elf_Internal_Shdr
*symtab_hdr
;
664 struct elf_link_hash_entry
**sym_hashes
;
665 const Elf_Internal_Rela
*rel
;
666 const Elf_Internal_Rela
*rel_end
;
668 bfd_vma
* local_got_offsets
;
677 if (info
->relocatable
)
680 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
681 sym_hashes
= elf_sym_hashes (abfd
);
683 dynobj
= elf_hash_table (info
)->dynobj
;
684 local_got_offsets
= elf_local_got_offsets (abfd
);
685 rel_end
= relocs
+ sec
->reloc_count
;
686 sym_diff_reloc_seen
= FALSE
;
688 for (rel
= relocs
; rel
< rel_end
; rel
++)
690 struct elf_link_hash_entry
*h
;
691 unsigned long r_symndx
;
693 r_symndx
= ELF32_R_SYM (rel
->r_info
);
694 if (r_symndx
< symtab_hdr
->sh_info
)
698 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
699 while (h
->root
.type
== bfd_link_hash_indirect
700 || h
->root
.type
== bfd_link_hash_warning
)
701 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
704 /* Some relocs require a global offset table. */
707 switch (ELF32_R_TYPE (rel
->r_info
))
709 case R_MN10300_GOT32
:
710 case R_MN10300_GOT24
:
711 case R_MN10300_GOT16
:
712 case R_MN10300_GOTOFF32
:
713 case R_MN10300_GOTOFF24
:
714 case R_MN10300_GOTOFF16
:
715 case R_MN10300_GOTPC32
:
716 case R_MN10300_GOTPC16
:
717 elf_hash_table (info
)->dynobj
= dynobj
= abfd
;
718 if (! _bfd_mn10300_elf_create_got_section (dynobj
, info
))
727 switch (ELF32_R_TYPE (rel
->r_info
))
729 /* This relocation describes the C++ object vtable hierarchy.
730 Reconstruct it for later use during GC. */
731 case R_MN10300_GNU_VTINHERIT
:
732 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
736 /* This relocation describes which C++ vtable entries are actually
737 used. Record for later use during GC. */
738 case R_MN10300_GNU_VTENTRY
:
739 BFD_ASSERT (h
!= NULL
);
741 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
744 case R_MN10300_GOT32
:
745 case R_MN10300_GOT24
:
746 case R_MN10300_GOT16
:
747 /* This symbol requires a global offset table entry. */
751 sgot
= bfd_get_section_by_name (dynobj
, ".got");
752 BFD_ASSERT (sgot
!= NULL
);
756 && (h
!= NULL
|| info
->shared
))
758 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
761 srelgot
= bfd_make_section_with_flags (dynobj
,
770 || ! bfd_set_section_alignment (dynobj
, srelgot
, 2))
777 if (h
->got
.offset
!= (bfd_vma
) -1)
778 /* We have already allocated space in the .got. */
781 h
->got
.offset
= sgot
->size
;
783 /* Make sure this symbol is output as a dynamic symbol. */
784 if (h
->dynindx
== -1)
786 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
790 srelgot
->size
+= sizeof (Elf32_External_Rela
);
794 /* This is a global offset table entry for a local
796 if (local_got_offsets
== NULL
)
801 size
= symtab_hdr
->sh_info
* sizeof (bfd_vma
);
802 local_got_offsets
= bfd_alloc (abfd
, size
);
804 if (local_got_offsets
== NULL
)
806 elf_local_got_offsets (abfd
) = local_got_offsets
;
808 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
809 local_got_offsets
[i
] = (bfd_vma
) -1;
812 if (local_got_offsets
[r_symndx
] != (bfd_vma
) -1)
813 /* We have already allocated space in the .got. */
816 local_got_offsets
[r_symndx
] = sgot
->size
;
819 /* If we are generating a shared object, we need to
820 output a R_MN10300_RELATIVE reloc so that the dynamic
821 linker can adjust this GOT entry. */
822 srelgot
->size
+= sizeof (Elf32_External_Rela
);
828 case R_MN10300_PLT32
:
829 case R_MN10300_PLT16
:
830 /* This symbol requires a procedure linkage table entry. We
831 actually build the entry in adjust_dynamic_symbol,
832 because this might be a case of linking PIC code which is
833 never referenced by a dynamic object, in which case we
834 don't need to generate a procedure linkage table entry
837 /* If this is a local symbol, we resolve it directly without
838 creating a procedure linkage table entry. */
842 if (ELF_ST_VISIBILITY (h
->other
) == STV_INTERNAL
843 || ELF_ST_VISIBILITY (h
->other
) == STV_HIDDEN
)
852 case R_MN10300_PCREL32
:
853 case R_MN10300_PCREL16
:
854 case R_MN10300_PCREL8
:
859 case R_MN10300_SYM_DIFF
:
860 sym_diff_reloc_seen
= TRUE
;
867 /* If we are creating a shared library, then we
868 need to copy the reloc into the shared library. */
870 && (sec
->flags
& SEC_ALLOC
) != 0
871 /* Do not generate a dynamic reloc for a
872 reloc associated with a SYM_DIFF operation. */
873 && ! sym_diff_reloc_seen
)
875 asection
* sym_section
= NULL
;
877 /* Find the section containing the
878 symbol involved in the relocation. */
881 Elf_Internal_Sym
* isymbuf
;
882 Elf_Internal_Sym
* isym
;
884 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
886 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
887 symtab_hdr
->sh_info
, 0,
891 isym
= isymbuf
+ r_symndx
;
892 /* All we care about is whether this local symbol is absolute. */
893 if (isym
->st_shndx
== SHN_ABS
)
894 sym_section
= bfd_abs_section_ptr
;
899 if (h
->root
.type
== bfd_link_hash_defined
900 || h
->root
.type
== bfd_link_hash_defweak
)
901 sym_section
= h
->root
.u
.def
.section
;
904 /* If the symbol is absolute then the relocation can
905 be resolved during linking and there is no need for
907 if (sym_section
!= bfd_abs_section_ptr
)
909 /* When creating a shared object, we must copy these
910 reloc types into the output file. We create a reloc
911 section in dynobj and make room for this reloc. */
916 name
= (bfd_elf_string_from_elf_section
918 elf_elfheader (abfd
)->e_shstrndx
,
919 elf_section_data (sec
)->rel_hdr
.sh_name
));
923 BFD_ASSERT (CONST_STRNEQ (name
, ".rela")
924 && streq (bfd_get_section_name (abfd
, sec
), name
+ 5));
926 sreloc
= bfd_get_section_by_name (dynobj
, name
);
931 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
932 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
933 if ((sec
->flags
& SEC_ALLOC
) != 0)
934 flags
|= SEC_ALLOC
| SEC_LOAD
;
935 sreloc
= bfd_make_section_with_flags (dynobj
, name
, flags
);
937 || ! bfd_set_section_alignment (dynobj
, sreloc
, 2))
942 sreloc
->size
+= sizeof (Elf32_External_Rela
);
949 if (ELF32_R_TYPE (rel
->r_info
) != R_MN10300_SYM_DIFF
)
950 sym_diff_reloc_seen
= FALSE
;
956 /* Return the section that should be marked against GC for a given
960 mn10300_elf_gc_mark_hook (asection
*sec
,
961 struct bfd_link_info
*info
,
962 Elf_Internal_Rela
*rel
,
963 struct elf_link_hash_entry
*h
,
964 Elf_Internal_Sym
*sym
)
967 switch (ELF32_R_TYPE (rel
->r_info
))
969 case R_MN10300_GNU_VTINHERIT
:
970 case R_MN10300_GNU_VTENTRY
:
974 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
977 /* Perform a relocation as part of a final link. */
979 static bfd_reloc_status_type
980 mn10300_elf_final_link_relocate (reloc_howto_type
*howto
,
982 bfd
*output_bfd ATTRIBUTE_UNUSED
,
983 asection
*input_section
,
988 struct elf_link_hash_entry
* h
,
989 unsigned long symndx
,
990 struct bfd_link_info
*info
,
991 asection
*sym_sec ATTRIBUTE_UNUSED
,
992 int is_local ATTRIBUTE_UNUSED
)
994 static asection
* sym_diff_section
;
995 static bfd_vma sym_diff_value
;
996 bfd_boolean is_sym_diff_reloc
;
997 unsigned long r_type
= howto
->type
;
998 bfd_byte
* hit_data
= contents
+ offset
;
1000 bfd_vma
* local_got_offsets
;
1005 dynobj
= elf_hash_table (info
)->dynobj
;
1006 local_got_offsets
= elf_local_got_offsets (input_bfd
);
1017 case R_MN10300_PCREL8
:
1018 case R_MN10300_PCREL16
:
1019 case R_MN10300_PCREL32
:
1020 case R_MN10300_GOTOFF32
:
1021 case R_MN10300_GOTOFF24
:
1022 case R_MN10300_GOTOFF16
:
1024 && (input_section
->flags
& SEC_ALLOC
) != 0
1026 && ! SYMBOL_REFERENCES_LOCAL (info
, h
))
1027 return bfd_reloc_dangerous
;
1030 is_sym_diff_reloc
= FALSE
;
1031 if (sym_diff_section
!= NULL
)
1033 BFD_ASSERT (sym_diff_section
== input_section
);
1041 value
-= sym_diff_value
;
1042 sym_diff_section
= NULL
;
1043 is_sym_diff_reloc
= TRUE
;
1047 sym_diff_section
= NULL
;
1054 case R_MN10300_SYM_DIFF
:
1055 BFD_ASSERT (addend
== 0);
1056 /* Cache the input section and value.
1057 The offset is unreliable, since relaxation may
1058 have reduced the following reloc's offset. */
1059 sym_diff_section
= input_section
;
1060 sym_diff_value
= value
;
1061 return bfd_reloc_ok
;
1063 case R_MN10300_ALIGN
:
1064 case R_MN10300_NONE
:
1065 return bfd_reloc_ok
;
1069 /* Do not generate relocs when an R_MN10300_32 has been used
1070 with an R_MN10300_SYM_DIFF to compute a difference of two
1072 && is_sym_diff_reloc
== FALSE
1073 /* Also, do not generate a reloc when the symbol associated
1074 with the R_MN10300_32 reloc is absolute - there is no
1075 need for a run time computation in this case. */
1076 && sym_sec
!= bfd_abs_section_ptr
1077 /* If the section is not going to be allocated at load time
1078 then there is no need to generate relocs for it. */
1079 && (input_section
->flags
& SEC_ALLOC
) != 0)
1081 Elf_Internal_Rela outrel
;
1082 bfd_boolean skip
, relocate
;
1084 /* When generating a shared object, these relocations are
1085 copied into the output file to be resolved at run
1091 name
= (bfd_elf_string_from_elf_section
1093 elf_elfheader (input_bfd
)->e_shstrndx
,
1094 elf_section_data (input_section
)->rel_hdr
.sh_name
));
1098 BFD_ASSERT (CONST_STRNEQ (name
, ".rela")
1099 && streq (bfd_get_section_name (input_bfd
,
1103 sreloc
= bfd_get_section_by_name (dynobj
, name
);
1104 BFD_ASSERT (sreloc
!= NULL
);
1109 outrel
.r_offset
= _bfd_elf_section_offset (input_bfd
, info
,
1110 input_section
, offset
);
1111 if (outrel
.r_offset
== (bfd_vma
) -1)
1114 outrel
.r_offset
+= (input_section
->output_section
->vma
1115 + input_section
->output_offset
);
1119 memset (&outrel
, 0, sizeof outrel
);
1124 /* h->dynindx may be -1 if this symbol was marked to
1127 || SYMBOL_REFERENCES_LOCAL (info
, h
))
1130 outrel
.r_info
= ELF32_R_INFO (0, R_MN10300_RELATIVE
);
1131 outrel
.r_addend
= value
+ addend
;
1135 BFD_ASSERT (h
->dynindx
!= -1);
1137 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_MN10300_32
);
1138 outrel
.r_addend
= value
+ addend
;
1142 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
1143 (bfd_byte
*) (((Elf32_External_Rela
*) sreloc
->contents
)
1144 + sreloc
->reloc_count
));
1145 ++sreloc
->reloc_count
;
1147 /* If this reloc is against an external symbol, we do
1148 not want to fiddle with the addend. Otherwise, we
1149 need to include the symbol value so that it becomes
1150 an addend for the dynamic reloc. */
1152 return bfd_reloc_ok
;
1155 bfd_put_32 (input_bfd
, value
, hit_data
);
1156 return bfd_reloc_ok
;
1161 if ((long) value
> 0x7fffff || (long) value
< -0x800000)
1162 return bfd_reloc_overflow
;
1164 bfd_put_8 (input_bfd
, value
& 0xff, hit_data
);
1165 bfd_put_8 (input_bfd
, (value
>> 8) & 0xff, hit_data
+ 1);
1166 bfd_put_8 (input_bfd
, (value
>> 16) & 0xff, hit_data
+ 2);
1167 return bfd_reloc_ok
;
1172 if ((long) value
> 0x7fff || (long) value
< -0x8000)
1173 return bfd_reloc_overflow
;
1175 bfd_put_16 (input_bfd
, value
, hit_data
);
1176 return bfd_reloc_ok
;
1181 if ((long) value
> 0x7f || (long) value
< -0x80)
1182 return bfd_reloc_overflow
;
1184 bfd_put_8 (input_bfd
, value
, hit_data
);
1185 return bfd_reloc_ok
;
1187 case R_MN10300_PCREL8
:
1188 value
-= (input_section
->output_section
->vma
1189 + input_section
->output_offset
);
1193 if ((long) value
> 0xff || (long) value
< -0x100)
1194 return bfd_reloc_overflow
;
1196 bfd_put_8 (input_bfd
, value
, hit_data
);
1197 return bfd_reloc_ok
;
1199 case R_MN10300_PCREL16
:
1200 value
-= (input_section
->output_section
->vma
1201 + input_section
->output_offset
);
1205 if ((long) value
> 0xffff || (long) value
< -0x10000)
1206 return bfd_reloc_overflow
;
1208 bfd_put_16 (input_bfd
, value
, hit_data
);
1209 return bfd_reloc_ok
;
1211 case R_MN10300_PCREL32
:
1212 value
-= (input_section
->output_section
->vma
1213 + input_section
->output_offset
);
1217 bfd_put_32 (input_bfd
, value
, hit_data
);
1218 return bfd_reloc_ok
;
1220 case R_MN10300_GNU_VTINHERIT
:
1221 case R_MN10300_GNU_VTENTRY
:
1222 return bfd_reloc_ok
;
1224 case R_MN10300_GOTPC32
:
1225 /* Use global offset table as symbol value. */
1226 value
= bfd_get_section_by_name (dynobj
,
1227 ".got")->output_section
->vma
;
1228 value
-= (input_section
->output_section
->vma
1229 + input_section
->output_offset
);
1233 bfd_put_32 (input_bfd
, value
, hit_data
);
1234 return bfd_reloc_ok
;
1236 case R_MN10300_GOTPC16
:
1237 /* Use global offset table as symbol value. */
1238 value
= bfd_get_section_by_name (dynobj
,
1239 ".got")->output_section
->vma
;
1240 value
-= (input_section
->output_section
->vma
1241 + input_section
->output_offset
);
1245 if ((long) value
> 0xffff || (long) value
< -0x10000)
1246 return bfd_reloc_overflow
;
1248 bfd_put_16 (input_bfd
, value
, hit_data
);
1249 return bfd_reloc_ok
;
1251 case R_MN10300_GOTOFF32
:
1252 value
-= bfd_get_section_by_name (dynobj
,
1253 ".got")->output_section
->vma
;
1256 bfd_put_32 (input_bfd
, value
, hit_data
);
1257 return bfd_reloc_ok
;
1259 case R_MN10300_GOTOFF24
:
1260 value
-= bfd_get_section_by_name (dynobj
,
1261 ".got")->output_section
->vma
;
1264 if ((long) value
> 0x7fffff || (long) value
< -0x800000)
1265 return bfd_reloc_overflow
;
1267 bfd_put_8 (input_bfd
, value
, hit_data
);
1268 bfd_put_8 (input_bfd
, (value
>> 8) & 0xff, hit_data
+ 1);
1269 bfd_put_8 (input_bfd
, (value
>> 16) & 0xff, hit_data
+ 2);
1270 return bfd_reloc_ok
;
1272 case R_MN10300_GOTOFF16
:
1273 value
-= bfd_get_section_by_name (dynobj
,
1274 ".got")->output_section
->vma
;
1277 if ((long) value
> 0xffff || (long) value
< -0x10000)
1278 return bfd_reloc_overflow
;
1280 bfd_put_16 (input_bfd
, value
, hit_data
);
1281 return bfd_reloc_ok
;
1283 case R_MN10300_PLT32
:
1285 && ELF_ST_VISIBILITY (h
->other
) != STV_INTERNAL
1286 && ELF_ST_VISIBILITY (h
->other
) != STV_HIDDEN
1287 && h
->plt
.offset
!= (bfd_vma
) -1)
1291 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1293 value
= (splt
->output_section
->vma
1294 + splt
->output_offset
1295 + h
->plt
.offset
) - value
;
1298 value
-= (input_section
->output_section
->vma
1299 + input_section
->output_offset
);
1303 bfd_put_32 (input_bfd
, value
, hit_data
);
1304 return bfd_reloc_ok
;
1306 case R_MN10300_PLT16
:
1308 && ELF_ST_VISIBILITY (h
->other
) != STV_INTERNAL
1309 && ELF_ST_VISIBILITY (h
->other
) != STV_HIDDEN
1310 && h
->plt
.offset
!= (bfd_vma
) -1)
1314 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1316 value
= (splt
->output_section
->vma
1317 + splt
->output_offset
1318 + h
->plt
.offset
) - value
;
1321 value
-= (input_section
->output_section
->vma
1322 + input_section
->output_offset
);
1326 if ((long) value
> 0xffff || (long) value
< -0x10000)
1327 return bfd_reloc_overflow
;
1329 bfd_put_16 (input_bfd
, value
, hit_data
);
1330 return bfd_reloc_ok
;
1332 case R_MN10300_GOT32
:
1333 case R_MN10300_GOT24
:
1334 case R_MN10300_GOT16
:
1338 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1344 off
= h
->got
.offset
;
1345 BFD_ASSERT (off
!= (bfd_vma
) -1);
1347 if (! elf_hash_table (info
)->dynamic_sections_created
1348 || SYMBOL_REFERENCES_LOCAL (info
, h
))
1349 /* This is actually a static link, or it is a
1350 -Bsymbolic link and the symbol is defined
1351 locally, or the symbol was forced to be local
1352 because of a version file. We must initialize
1353 this entry in the global offset table.
1355 When doing a dynamic link, we create a .rela.got
1356 relocation entry to initialize the value. This
1357 is done in the finish_dynamic_symbol routine. */
1358 bfd_put_32 (output_bfd
, value
,
1359 sgot
->contents
+ off
);
1361 value
= sgot
->output_offset
+ off
;
1367 off
= elf_local_got_offsets (input_bfd
)[symndx
];
1369 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
1374 Elf_Internal_Rela outrel
;
1376 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
1377 BFD_ASSERT (srelgot
!= NULL
);
1379 outrel
.r_offset
= (sgot
->output_section
->vma
1380 + sgot
->output_offset
1382 outrel
.r_info
= ELF32_R_INFO (0, R_MN10300_RELATIVE
);
1383 outrel
.r_addend
= value
;
1384 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
1385 (bfd_byte
*) (((Elf32_External_Rela
*)
1387 + srelgot
->reloc_count
));
1388 ++ srelgot
->reloc_count
;
1391 value
= sgot
->output_offset
+ off
;
1397 if (r_type
== R_MN10300_GOT32
)
1399 bfd_put_32 (input_bfd
, value
, hit_data
);
1400 return bfd_reloc_ok
;
1402 else if (r_type
== R_MN10300_GOT24
)
1404 if ((long) value
> 0x7fffff || (long) value
< -0x800000)
1405 return bfd_reloc_overflow
;
1407 bfd_put_8 (input_bfd
, value
& 0xff, hit_data
);
1408 bfd_put_8 (input_bfd
, (value
>> 8) & 0xff, hit_data
+ 1);
1409 bfd_put_8 (input_bfd
, (value
>> 16) & 0xff, hit_data
+ 2);
1410 return bfd_reloc_ok
;
1412 else if (r_type
== R_MN10300_GOT16
)
1414 if ((long) value
> 0xffff || (long) value
< -0x10000)
1415 return bfd_reloc_overflow
;
1417 bfd_put_16 (input_bfd
, value
, hit_data
);
1418 return bfd_reloc_ok
;
1423 return bfd_reloc_notsupported
;
1427 /* Relocate an MN10300 ELF section. */
1430 mn10300_elf_relocate_section (bfd
*output_bfd
,
1431 struct bfd_link_info
*info
,
1433 asection
*input_section
,
1435 Elf_Internal_Rela
*relocs
,
1436 Elf_Internal_Sym
*local_syms
,
1437 asection
**local_sections
)
1439 Elf_Internal_Shdr
*symtab_hdr
;
1440 struct elf_link_hash_entry
**sym_hashes
;
1441 Elf_Internal_Rela
*rel
, *relend
;
1443 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
1444 sym_hashes
= elf_sym_hashes (input_bfd
);
1447 relend
= relocs
+ input_section
->reloc_count
;
1448 for (; rel
< relend
; rel
++)
1451 reloc_howto_type
*howto
;
1452 unsigned long r_symndx
;
1453 Elf_Internal_Sym
*sym
;
1455 struct elf32_mn10300_link_hash_entry
*h
;
1457 bfd_reloc_status_type r
;
1459 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1460 r_type
= ELF32_R_TYPE (rel
->r_info
);
1461 howto
= elf_mn10300_howto_table
+ r_type
;
1463 /* Just skip the vtable gc relocs. */
1464 if (r_type
== R_MN10300_GNU_VTINHERIT
1465 || r_type
== R_MN10300_GNU_VTENTRY
)
1471 if (r_symndx
< symtab_hdr
->sh_info
)
1473 sym
= local_syms
+ r_symndx
;
1474 sec
= local_sections
[r_symndx
];
1475 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
1479 bfd_boolean unresolved_reloc
;
1481 struct elf_link_hash_entry
*hh
;
1483 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
1484 r_symndx
, symtab_hdr
, sym_hashes
,
1485 hh
, sec
, relocation
,
1486 unresolved_reloc
, warned
);
1488 h
= (struct elf32_mn10300_link_hash_entry
*) hh
;
1490 if ((h
->root
.root
.type
== bfd_link_hash_defined
1491 || h
->root
.root
.type
== bfd_link_hash_defweak
)
1492 && ( r_type
== R_MN10300_GOTPC32
1493 || r_type
== R_MN10300_GOTPC16
1494 || (( r_type
== R_MN10300_PLT32
1495 || r_type
== R_MN10300_PLT16
)
1496 && ELF_ST_VISIBILITY (h
->root
.other
) != STV_INTERNAL
1497 && ELF_ST_VISIBILITY (h
->root
.other
) != STV_HIDDEN
1498 && h
->root
.plt
.offset
!= (bfd_vma
) -1)
1499 || (( r_type
== R_MN10300_GOT32
1500 || r_type
== R_MN10300_GOT24
1501 || r_type
== R_MN10300_GOT16
)
1502 && elf_hash_table (info
)->dynamic_sections_created
1503 && !SYMBOL_REFERENCES_LOCAL (info
, hh
))
1504 || (r_type
== R_MN10300_32
1505 /* _32 relocs in executables force _COPY relocs,
1506 such that the address of the symbol ends up
1508 && !info
->executable
1509 && !SYMBOL_REFERENCES_LOCAL (info
, hh
)
1510 && ((input_section
->flags
& SEC_ALLOC
) != 0
1511 /* DWARF will emit R_MN10300_32 relocations
1512 in its sections against symbols defined
1513 externally in shared libraries. We can't
1514 do anything with them here. */
1515 || ((input_section
->flags
& SEC_DEBUGGING
) != 0
1516 && h
->root
.def_dynamic
)))))
1517 /* In these cases, we don't need the relocation
1518 value. We check specially because in some
1519 obscure cases sec->output_section will be NULL. */
1522 else if (!info
->relocatable
&& unresolved_reloc
)
1523 (*_bfd_error_handler
)
1524 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
1527 (long) rel
->r_offset
,
1529 h
->root
.root
.root
.string
);
1532 if (sec
!= NULL
&& elf_discarded_section (sec
))
1534 /* For relocs against symbols from removed linkonce sections,
1535 or sections discarded by a linker script, we just want the
1536 section contents zeroed. Avoid any special processing. */
1537 _bfd_clear_contents (howto
, input_bfd
, contents
+ rel
->r_offset
);
1543 if (info
->relocatable
)
1546 r
= mn10300_elf_final_link_relocate (howto
, input_bfd
, output_bfd
,
1548 contents
, rel
->r_offset
,
1549 relocation
, rel
->r_addend
,
1550 (struct elf_link_hash_entry
*) h
,
1552 info
, sec
, h
== NULL
);
1554 if (r
!= bfd_reloc_ok
)
1557 const char *msg
= NULL
;
1560 name
= h
->root
.root
.root
.string
;
1563 name
= (bfd_elf_string_from_elf_section
1564 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
1565 if (name
== NULL
|| *name
== '\0')
1566 name
= bfd_section_name (input_bfd
, sec
);
1571 case bfd_reloc_overflow
:
1572 if (! ((*info
->callbacks
->reloc_overflow
)
1573 (info
, (h
? &h
->root
.root
: NULL
), name
,
1574 howto
->name
, (bfd_vma
) 0, input_bfd
,
1575 input_section
, rel
->r_offset
)))
1579 case bfd_reloc_undefined
:
1580 if (! ((*info
->callbacks
->undefined_symbol
)
1581 (info
, name
, input_bfd
, input_section
,
1582 rel
->r_offset
, TRUE
)))
1586 case bfd_reloc_outofrange
:
1587 msg
= _("internal error: out of range error");
1590 case bfd_reloc_notsupported
:
1591 msg
= _("internal error: unsupported relocation error");
1594 case bfd_reloc_dangerous
:
1595 if (r_type
== R_MN10300_PCREL32
)
1596 msg
= _("error: inappropriate relocation type for shared"
1597 " library (did you forget -fpic?)");
1599 msg
= _("internal error: suspicious relocation type used"
1600 " in shared library");
1604 msg
= _("internal error: unknown error");
1608 if (!((*info
->callbacks
->warning
)
1609 (info
, msg
, name
, input_bfd
, input_section
,
1620 /* Finish initializing one hash table entry. */
1623 elf32_mn10300_finish_hash_table_entry (struct bfd_hash_entry
*gen_entry
,
1626 struct elf32_mn10300_link_hash_entry
*entry
;
1627 struct bfd_link_info
*link_info
= (struct bfd_link_info
*) in_args
;
1628 unsigned int byte_count
= 0;
1630 entry
= (struct elf32_mn10300_link_hash_entry
*) gen_entry
;
1632 if (entry
->root
.root
.type
== bfd_link_hash_warning
)
1633 entry
= (struct elf32_mn10300_link_hash_entry
*) entry
->root
.root
.u
.i
.link
;
1635 /* If we already know we want to convert "call" to "calls" for calls
1636 to this symbol, then return now. */
1637 if (entry
->flags
== MN10300_CONVERT_CALL_TO_CALLS
)
1640 /* If there are no named calls to this symbol, or there's nothing we
1641 can move from the function itself into the "call" instruction,
1642 then note that all "call" instructions should be converted into
1643 "calls" instructions and return. If a symbol is available for
1644 dynamic symbol resolution (overridable or overriding), avoid
1645 custom calling conventions. */
1646 if (entry
->direct_calls
== 0
1647 || (entry
->stack_size
== 0 && entry
->movm_args
== 0)
1648 || (elf_hash_table (link_info
)->dynamic_sections_created
1649 && ELF_ST_VISIBILITY (entry
->root
.other
) != STV_INTERNAL
1650 && ELF_ST_VISIBILITY (entry
->root
.other
) != STV_HIDDEN
))
1652 /* Make a note that we should convert "call" instructions to "calls"
1653 instructions for calls to this symbol. */
1654 entry
->flags
|= MN10300_CONVERT_CALL_TO_CALLS
;
1658 /* We may be able to move some instructions from the function itself into
1659 the "call" instruction. Count how many bytes we might be able to
1660 eliminate in the function itself. */
1662 /* A movm instruction is two bytes. */
1663 if (entry
->movm_args
)
1666 /* Count the insn to allocate stack space too. */
1667 if (entry
->stack_size
> 0)
1669 if (entry
->stack_size
<= 128)
1675 /* If using "call" will result in larger code, then turn all
1676 the associated "call" instructions into "calls" instructions. */
1677 if (byte_count
< entry
->direct_calls
)
1678 entry
->flags
|= MN10300_CONVERT_CALL_TO_CALLS
;
1680 /* This routine never fails. */
1684 /* Used to count hash table entries. */
1687 elf32_mn10300_count_hash_table_entries (struct bfd_hash_entry
*gen_entry ATTRIBUTE_UNUSED
,
1690 int *count
= (int *) in_args
;
1696 /* Used to enumerate hash table entries into a linear array. */
1699 elf32_mn10300_list_hash_table_entries (struct bfd_hash_entry
*gen_entry
,
1702 struct bfd_hash_entry
***ptr
= (struct bfd_hash_entry
***) in_args
;
1709 /* Used to sort the array created by the above. */
1712 sort_by_value (const void *va
, const void *vb
)
1714 struct elf32_mn10300_link_hash_entry
*a
1715 = *(struct elf32_mn10300_link_hash_entry
**) va
;
1716 struct elf32_mn10300_link_hash_entry
*b
1717 = *(struct elf32_mn10300_link_hash_entry
**) vb
;
1719 return a
->value
- b
->value
;
1722 /* Compute the stack size and movm arguments for the function
1723 referred to by HASH at address ADDR in section with
1724 contents CONTENTS, store the information in the hash table. */
1727 compute_function_info (bfd
*abfd
,
1728 struct elf32_mn10300_link_hash_entry
*hash
,
1730 unsigned char *contents
)
1732 unsigned char byte1
, byte2
;
1733 /* We only care about a very small subset of the possible prologue
1734 sequences here. Basically we look for:
1736 movm [d2,d3,a2,a3],sp (optional)
1737 add <size>,sp (optional, and only for sizes which fit in an unsigned
1740 If we find anything else, we quit. */
1742 /* Look for movm [regs],sp. */
1743 byte1
= bfd_get_8 (abfd
, contents
+ addr
);
1744 byte2
= bfd_get_8 (abfd
, contents
+ addr
+ 1);
1748 hash
->movm_args
= byte2
;
1750 byte1
= bfd_get_8 (abfd
, contents
+ addr
);
1751 byte2
= bfd_get_8 (abfd
, contents
+ addr
+ 1);
1754 /* Now figure out how much stack space will be allocated by the movm
1755 instruction. We need this kept separate from the function's normal
1757 if (hash
->movm_args
)
1760 if (hash
->movm_args
& 0x80)
1761 hash
->movm_stack_size
+= 4;
1764 if (hash
->movm_args
& 0x40)
1765 hash
->movm_stack_size
+= 4;
1768 if (hash
->movm_args
& 0x20)
1769 hash
->movm_stack_size
+= 4;
1772 if (hash
->movm_args
& 0x10)
1773 hash
->movm_stack_size
+= 4;
1775 /* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */
1776 if (hash
->movm_args
& 0x08)
1777 hash
->movm_stack_size
+= 8 * 4;
1779 if (bfd_get_mach (abfd
) == bfd_mach_am33
1780 || bfd_get_mach (abfd
) == bfd_mach_am33_2
)
1782 /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */
1783 if (hash
->movm_args
& 0x1)
1784 hash
->movm_stack_size
+= 6 * 4;
1786 /* exreg1 space. e4, e5, e6, e7 */
1787 if (hash
->movm_args
& 0x2)
1788 hash
->movm_stack_size
+= 4 * 4;
1790 /* exreg0 space. e2, e3 */
1791 if (hash
->movm_args
& 0x4)
1792 hash
->movm_stack_size
+= 2 * 4;
1796 /* Now look for the two stack adjustment variants. */
1797 if (byte1
== 0xf8 && byte2
== 0xfe)
1799 int temp
= bfd_get_8 (abfd
, contents
+ addr
+ 2);
1800 temp
= ((temp
& 0xff) ^ (~0x7f)) + 0x80;
1802 hash
->stack_size
= -temp
;
1804 else if (byte1
== 0xfa && byte2
== 0xfe)
1806 int temp
= bfd_get_16 (abfd
, contents
+ addr
+ 2);
1807 temp
= ((temp
& 0xffff) ^ (~0x7fff)) + 0x8000;
1811 hash
->stack_size
= temp
;
1814 /* If the total stack to be allocated by the call instruction is more
1815 than 255 bytes, then we can't remove the stack adjustment by using
1816 "call" (we might still be able to remove the "movm" instruction. */
1817 if (hash
->stack_size
+ hash
->movm_stack_size
> 255)
1818 hash
->stack_size
= 0;
1821 /* Delete some bytes from a section while relaxing. */
1824 mn10300_elf_relax_delete_bytes (bfd
*abfd
,
1829 Elf_Internal_Shdr
*symtab_hdr
;
1830 unsigned int sec_shndx
;
1832 Elf_Internal_Rela
*irel
, *irelend
;
1833 Elf_Internal_Rela
*irelalign
;
1835 Elf_Internal_Sym
*isym
, *isymend
;
1836 struct elf_link_hash_entry
**sym_hashes
;
1837 struct elf_link_hash_entry
**end_hashes
;
1838 unsigned int symcount
;
1840 sec_shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
1842 contents
= elf_section_data (sec
)->this_hdr
.contents
;
1847 irel
= elf_section_data (sec
)->relocs
;
1848 irelend
= irel
+ sec
->reloc_count
;
1850 /* If there is an align reloc at the end of the section ignore it.
1851 GAS creates these relocs for reasons of its own, and they just
1852 serve to keep the section artifically inflated. */
1853 if (ELF32_R_TYPE ((irelend
- 1)->r_info
) == (int) R_MN10300_ALIGN
)
1856 /* The deletion must stop at the next ALIGN reloc for an aligment
1857 power larger than the number of bytes we are deleting. */
1858 for (; irel
< irelend
; irel
++)
1859 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_ALIGN
1860 && irel
->r_offset
> addr
1861 && irel
->r_offset
< toaddr
1862 && count
< (1 << irel
->r_addend
))
1865 toaddr
= irel
->r_offset
;
1869 /* Actually delete the bytes. */
1870 memmove (contents
+ addr
, contents
+ addr
+ count
,
1871 (size_t) (toaddr
- addr
- count
));
1873 /* Adjust the section's size if we are shrinking it, or else
1874 pad the bytes between the end of the shrunken region and
1875 the start of the next region with NOP codes. */
1876 if (irelalign
== NULL
)
1879 /* Include symbols at the end of the section, but
1880 not at the end of a sub-region of the section. */
1887 #define NOP_OPCODE 0xcb
1889 for (i
= 0; i
< count
; i
++)
1890 bfd_put_8 (abfd
, (bfd_vma
) NOP_OPCODE
, contents
+ toaddr
- count
+ i
);
1893 /* Adjust all the relocs. */
1894 for (irel
= elf_section_data (sec
)->relocs
; irel
< irelend
; irel
++)
1896 /* Get the new reloc address. */
1897 if ((irel
->r_offset
> addr
1898 && irel
->r_offset
< toaddr
))
1899 irel
->r_offset
-= count
;
1902 /* Adjust the local symbols defined in this section. */
1903 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1904 isym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
1905 for (isymend
= isym
+ symtab_hdr
->sh_info
; isym
< isymend
; isym
++)
1907 if (isym
->st_shndx
== sec_shndx
1908 && isym
->st_value
> addr
1909 && isym
->st_value
< toaddr
)
1910 isym
->st_value
-= count
;
1911 /* Adjust the function symbol's size as well. */
1912 else if (isym
->st_shndx
== sec_shndx
1913 && ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
1914 && isym
->st_value
+ isym
->st_size
> addr
1915 && isym
->st_value
+ isym
->st_size
< toaddr
)
1916 isym
->st_size
-= count
;
1919 /* Now adjust the global symbols defined in this section. */
1920 symcount
= (symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
)
1921 - symtab_hdr
->sh_info
);
1922 sym_hashes
= elf_sym_hashes (abfd
);
1923 end_hashes
= sym_hashes
+ symcount
;
1924 for (; sym_hashes
< end_hashes
; sym_hashes
++)
1926 struct elf_link_hash_entry
*sym_hash
= *sym_hashes
;
1928 if ((sym_hash
->root
.type
== bfd_link_hash_defined
1929 || sym_hash
->root
.type
== bfd_link_hash_defweak
)
1930 && sym_hash
->root
.u
.def
.section
== sec
1931 && sym_hash
->root
.u
.def
.value
> addr
1932 && sym_hash
->root
.u
.def
.value
< toaddr
)
1933 sym_hash
->root
.u
.def
.value
-= count
;
1934 /* Adjust the function symbol's size as well. */
1935 else if (sym_hash
->root
.type
== bfd_link_hash_defined
1936 && sym_hash
->root
.u
.def
.section
== sec
1937 && sym_hash
->type
== STT_FUNC
1938 && sym_hash
->root
.u
.def
.value
+ sym_hash
->size
> addr
1939 && sym_hash
->root
.u
.def
.value
+ sym_hash
->size
< toaddr
)
1940 sym_hash
->size
-= count
;
1946 /* Return TRUE if a symbol exists at the given address, else return
1950 mn10300_elf_symbol_address_p (bfd
*abfd
,
1952 Elf_Internal_Sym
*isym
,
1955 Elf_Internal_Shdr
*symtab_hdr
;
1956 unsigned int sec_shndx
;
1957 Elf_Internal_Sym
*isymend
;
1958 struct elf_link_hash_entry
**sym_hashes
;
1959 struct elf_link_hash_entry
**end_hashes
;
1960 unsigned int symcount
;
1962 sec_shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
1964 /* Examine all the symbols. */
1965 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1966 for (isymend
= isym
+ symtab_hdr
->sh_info
; isym
< isymend
; isym
++)
1967 if (isym
->st_shndx
== sec_shndx
1968 && isym
->st_value
== addr
)
1971 symcount
= (symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
)
1972 - symtab_hdr
->sh_info
);
1973 sym_hashes
= elf_sym_hashes (abfd
);
1974 end_hashes
= sym_hashes
+ symcount
;
1975 for (; sym_hashes
< end_hashes
; sym_hashes
++)
1977 struct elf_link_hash_entry
*sym_hash
= *sym_hashes
;
1979 if ((sym_hash
->root
.type
== bfd_link_hash_defined
1980 || sym_hash
->root
.type
== bfd_link_hash_defweak
)
1981 && sym_hash
->root
.u
.def
.section
== sec
1982 && sym_hash
->root
.u
.def
.value
== addr
)
1989 /* This function handles relaxing for the mn10300.
1991 There are quite a few relaxing opportunities available on the mn10300:
1993 * calls:32 -> calls:16 2 bytes
1994 * call:32 -> call:16 2 bytes
1996 * call:32 -> calls:32 1 byte
1997 * call:16 -> calls:16 1 byte
1998 * These are done anytime using "calls" would result
1999 in smaller code, or when necessary to preserve the
2000 meaning of the program.
2004 * In some circumstances we can move instructions
2005 from a function prologue into a "call" instruction.
2006 This is only done if the resulting code is no larger
2007 than the original code.
2009 * jmp:32 -> jmp:16 2 bytes
2010 * jmp:16 -> bra:8 1 byte
2012 * If the previous instruction is a conditional branch
2013 around the jump/bra, we may be able to reverse its condition
2014 and change its target to the jump's target. The jump/bra
2015 can then be deleted. 2 bytes
2017 * mov abs32 -> mov abs16 1 or 2 bytes
2019 * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes
2020 - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes
2022 * Most instructions which accept d32 can relax to d16 1 or 2 bytes
2023 - Most instructions which accept d16 can relax to d8 1 or 2 bytes
2025 We don't handle imm16->imm8 or d16->d8 as they're very rare
2026 and somewhat more difficult to support. */
2029 mn10300_elf_relax_section (bfd
*abfd
,
2031 struct bfd_link_info
*link_info
,
2034 Elf_Internal_Shdr
*symtab_hdr
;
2035 Elf_Internal_Rela
*internal_relocs
= NULL
;
2036 Elf_Internal_Rela
*irel
, *irelend
;
2037 bfd_byte
*contents
= NULL
;
2038 Elf_Internal_Sym
*isymbuf
= NULL
;
2039 struct elf32_mn10300_link_hash_table
*hash_table
;
2040 asection
*section
= sec
;
2042 /* Assume nothing changes. */
2045 /* We need a pointer to the mn10300 specific hash table. */
2046 hash_table
= elf32_mn10300_hash_table (link_info
);
2048 /* Initialize fields in each hash table entry the first time through. */
2049 if ((hash_table
->flags
& MN10300_HASH_ENTRIES_INITIALIZED
) == 0)
2053 /* Iterate over all the input bfds. */
2054 for (input_bfd
= link_info
->input_bfds
;
2056 input_bfd
= input_bfd
->link_next
)
2058 /* We're going to need all the symbols for each bfd. */
2059 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
2060 if (symtab_hdr
->sh_info
!= 0)
2062 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
2063 if (isymbuf
== NULL
)
2064 isymbuf
= bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
2065 symtab_hdr
->sh_info
, 0,
2067 if (isymbuf
== NULL
)
2071 /* Iterate over each section in this bfd. */
2072 for (section
= input_bfd
->sections
;
2074 section
= section
->next
)
2076 struct elf32_mn10300_link_hash_entry
*hash
;
2077 Elf_Internal_Sym
*sym
;
2078 asection
*sym_sec
= NULL
;
2079 const char *sym_name
;
2082 /* If there's nothing to do in this section, skip it. */
2083 if (! ((section
->flags
& SEC_RELOC
) != 0
2084 && section
->reloc_count
!= 0))
2086 if ((section
->flags
& SEC_ALLOC
) == 0)
2089 /* Get cached copy of section contents if it exists. */
2090 if (elf_section_data (section
)->this_hdr
.contents
!= NULL
)
2091 contents
= elf_section_data (section
)->this_hdr
.contents
;
2092 else if (section
->size
!= 0)
2094 /* Go get them off disk. */
2095 if (!bfd_malloc_and_get_section (input_bfd
, section
,
2102 /* If there aren't any relocs, then there's nothing to do. */
2103 if ((section
->flags
& SEC_RELOC
) != 0
2104 && section
->reloc_count
!= 0)
2106 /* Get a copy of the native relocations. */
2107 internal_relocs
= _bfd_elf_link_read_relocs (input_bfd
, section
,
2109 link_info
->keep_memory
);
2110 if (internal_relocs
== NULL
)
2113 /* Now examine each relocation. */
2114 irel
= internal_relocs
;
2115 irelend
= irel
+ section
->reloc_count
;
2116 for (; irel
< irelend
; irel
++)
2119 unsigned long r_index
;
2122 r_type
= ELF32_R_TYPE (irel
->r_info
);
2123 r_index
= ELF32_R_SYM (irel
->r_info
);
2125 if (r_type
< 0 || r_type
>= (int) R_MN10300_MAX
)
2128 /* We need the name and hash table entry of the target
2134 if (r_index
< symtab_hdr
->sh_info
)
2136 /* A local symbol. */
2137 Elf_Internal_Sym
*isym
;
2138 struct elf_link_hash_table
*elftab
;
2141 isym
= isymbuf
+ r_index
;
2142 if (isym
->st_shndx
== SHN_UNDEF
)
2143 sym_sec
= bfd_und_section_ptr
;
2144 else if (isym
->st_shndx
== SHN_ABS
)
2145 sym_sec
= bfd_abs_section_ptr
;
2146 else if (isym
->st_shndx
== SHN_COMMON
)
2147 sym_sec
= bfd_com_section_ptr
;
2150 = bfd_section_from_elf_index (input_bfd
,
2154 = bfd_elf_string_from_elf_section (input_bfd
,
2159 /* If it isn't a function, then we don't care
2161 if (ELF_ST_TYPE (isym
->st_info
) != STT_FUNC
)
2164 /* Tack on an ID so we can uniquely identify this
2165 local symbol in the global hash table. */
2166 amt
= strlen (sym_name
) + 10;
2167 new_name
= bfd_malloc (amt
);
2168 if (new_name
== NULL
)
2171 sprintf (new_name
, "%s_%08x", sym_name
, sym_sec
->id
);
2172 sym_name
= new_name
;
2174 elftab
= &hash_table
->static_hash_table
->root
;
2175 hash
= ((struct elf32_mn10300_link_hash_entry
*)
2176 elf_link_hash_lookup (elftab
, sym_name
,
2177 TRUE
, TRUE
, FALSE
));
2182 r_index
-= symtab_hdr
->sh_info
;
2183 hash
= (struct elf32_mn10300_link_hash_entry
*)
2184 elf_sym_hashes (input_bfd
)[r_index
];
2187 sym_name
= hash
->root
.root
.root
.string
;
2188 if ((section
->flags
& SEC_CODE
) != 0)
2190 /* If this is not a "call" instruction, then we
2191 should convert "call" instructions to "calls"
2193 code
= bfd_get_8 (input_bfd
,
2194 contents
+ irel
->r_offset
- 1);
2195 if (code
!= 0xdd && code
!= 0xcd)
2196 hash
->flags
|= MN10300_CONVERT_CALL_TO_CALLS
;
2199 /* If this is a jump/call, then bump the
2200 direct_calls counter. Else force "call" to
2201 "calls" conversions. */
2202 if (r_type
== R_MN10300_PCREL32
2203 || r_type
== R_MN10300_PLT32
2204 || r_type
== R_MN10300_PLT16
2205 || r_type
== R_MN10300_PCREL16
)
2206 hash
->direct_calls
++;
2208 hash
->flags
|= MN10300_CONVERT_CALL_TO_CALLS
;
2212 /* Now look at the actual contents to get the stack size,
2213 and a list of what registers were saved in the prologue
2215 if ((section
->flags
& SEC_CODE
) != 0)
2217 Elf_Internal_Sym
*isym
, *isymend
;
2218 unsigned int sec_shndx
;
2219 struct elf_link_hash_entry
**hashes
;
2220 struct elf_link_hash_entry
**end_hashes
;
2221 unsigned int symcount
;
2223 sec_shndx
= _bfd_elf_section_from_bfd_section (input_bfd
,
2226 symcount
= (symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
)
2227 - symtab_hdr
->sh_info
);
2228 hashes
= elf_sym_hashes (input_bfd
);
2229 end_hashes
= hashes
+ symcount
;
2231 /* Look at each function defined in this section and
2232 update info for that function. */
2233 isymend
= isymbuf
+ symtab_hdr
->sh_info
;
2234 for (isym
= isymbuf
; isym
< isymend
; isym
++)
2236 if (isym
->st_shndx
== sec_shndx
2237 && ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
)
2239 struct elf_link_hash_table
*elftab
;
2241 struct elf_link_hash_entry
**lhashes
= hashes
;
2243 /* Skip a local symbol if it aliases a
2245 for (; lhashes
< end_hashes
; lhashes
++)
2247 hash
= (struct elf32_mn10300_link_hash_entry
*) *lhashes
;
2248 if ((hash
->root
.root
.type
== bfd_link_hash_defined
2249 || hash
->root
.root
.type
== bfd_link_hash_defweak
)
2250 && hash
->root
.root
.u
.def
.section
== section
2251 && hash
->root
.type
== STT_FUNC
2252 && hash
->root
.root
.u
.def
.value
== isym
->st_value
)
2255 if (lhashes
!= end_hashes
)
2258 if (isym
->st_shndx
== SHN_UNDEF
)
2259 sym_sec
= bfd_und_section_ptr
;
2260 else if (isym
->st_shndx
== SHN_ABS
)
2261 sym_sec
= bfd_abs_section_ptr
;
2262 else if (isym
->st_shndx
== SHN_COMMON
)
2263 sym_sec
= bfd_com_section_ptr
;
2266 = bfd_section_from_elf_index (input_bfd
,
2269 sym_name
= (bfd_elf_string_from_elf_section
2270 (input_bfd
, symtab_hdr
->sh_link
,
2273 /* Tack on an ID so we can uniquely identify this
2274 local symbol in the global hash table. */
2275 amt
= strlen (sym_name
) + 10;
2276 new_name
= bfd_malloc (amt
);
2277 if (new_name
== NULL
)
2280 sprintf (new_name
, "%s_%08x", sym_name
, sym_sec
->id
);
2281 sym_name
= new_name
;
2283 elftab
= &hash_table
->static_hash_table
->root
;
2284 hash
= ((struct elf32_mn10300_link_hash_entry
*)
2285 elf_link_hash_lookup (elftab
, sym_name
,
2286 TRUE
, TRUE
, FALSE
));
2288 compute_function_info (input_bfd
, hash
,
2289 isym
->st_value
, contents
);
2290 hash
->value
= isym
->st_value
;
2294 for (; hashes
< end_hashes
; hashes
++)
2296 hash
= (struct elf32_mn10300_link_hash_entry
*) *hashes
;
2297 if ((hash
->root
.root
.type
== bfd_link_hash_defined
2298 || hash
->root
.root
.type
== bfd_link_hash_defweak
)
2299 && hash
->root
.root
.u
.def
.section
== section
2300 && hash
->root
.type
== STT_FUNC
)
2301 compute_function_info (input_bfd
, hash
,
2302 (hash
)->root
.root
.u
.def
.value
,
2307 /* Cache or free any memory we allocated for the relocs. */
2308 if (internal_relocs
!= NULL
2309 && elf_section_data (section
)->relocs
!= internal_relocs
)
2310 free (internal_relocs
);
2311 internal_relocs
= NULL
;
2313 /* Cache or free any memory we allocated for the contents. */
2314 if (contents
!= NULL
2315 && elf_section_data (section
)->this_hdr
.contents
!= contents
)
2317 if (! link_info
->keep_memory
)
2321 /* Cache the section contents for elf_link_input_bfd. */
2322 elf_section_data (section
)->this_hdr
.contents
= contents
;
2328 /* Cache or free any memory we allocated for the symbols. */
2330 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
2332 if (! link_info
->keep_memory
)
2336 /* Cache the symbols for elf_link_input_bfd. */
2337 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
2343 /* Now iterate on each symbol in the hash table and perform
2344 the final initialization steps on each. */
2345 elf32_mn10300_link_hash_traverse (hash_table
,
2346 elf32_mn10300_finish_hash_table_entry
,
2348 elf32_mn10300_link_hash_traverse (hash_table
->static_hash_table
,
2349 elf32_mn10300_finish_hash_table_entry
,
2353 /* This section of code collects all our local symbols, sorts
2354 them by value, and looks for multiple symbols referring to
2355 the same address. For those symbols, the flags are merged.
2356 At this point, the only flag that can be set is
2357 MN10300_CONVERT_CALL_TO_CALLS, so we simply OR the flags
2359 int static_count
= 0, i
;
2360 struct elf32_mn10300_link_hash_entry
**entries
;
2361 struct elf32_mn10300_link_hash_entry
**ptr
;
2363 elf32_mn10300_link_hash_traverse (hash_table
->static_hash_table
,
2364 elf32_mn10300_count_hash_table_entries
,
2367 entries
= bfd_malloc (static_count
* sizeof (* ptr
));
2370 elf32_mn10300_link_hash_traverse (hash_table
->static_hash_table
,
2371 elf32_mn10300_list_hash_table_entries
,
2374 qsort (entries
, static_count
, sizeof (entries
[0]), sort_by_value
);
2376 for (i
= 0; i
< static_count
- 1; i
++)
2377 if (entries
[i
]->value
&& entries
[i
]->value
== entries
[i
+1]->value
)
2379 int v
= entries
[i
]->flags
;
2382 for (j
= i
+ 1; j
< static_count
&& entries
[j
]->value
== entries
[i
]->value
; j
++)
2383 v
|= entries
[j
]->flags
;
2385 for (j
= i
; j
< static_count
&& entries
[j
]->value
== entries
[i
]->value
; j
++)
2386 entries
[j
]->flags
= v
;
2392 /* All entries in the hash table are fully initialized. */
2393 hash_table
->flags
|= MN10300_HASH_ENTRIES_INITIALIZED
;
2395 /* Now that everything has been initialized, go through each
2396 code section and delete any prologue insns which will be
2397 redundant because their operations will be performed by
2398 a "call" instruction. */
2399 for (input_bfd
= link_info
->input_bfds
;
2401 input_bfd
= input_bfd
->link_next
)
2403 /* We're going to need all the local symbols for each bfd. */
2404 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
2405 if (symtab_hdr
->sh_info
!= 0)
2407 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
2408 if (isymbuf
== NULL
)
2409 isymbuf
= bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
2410 symtab_hdr
->sh_info
, 0,
2412 if (isymbuf
== NULL
)
2416 /* Walk over each section in this bfd. */
2417 for (section
= input_bfd
->sections
;
2419 section
= section
->next
)
2421 unsigned int sec_shndx
;
2422 Elf_Internal_Sym
*isym
, *isymend
;
2423 struct elf_link_hash_entry
**hashes
;
2424 struct elf_link_hash_entry
**end_hashes
;
2425 unsigned int symcount
;
2427 /* Skip non-code sections and empty sections. */
2428 if ((section
->flags
& SEC_CODE
) == 0 || section
->size
== 0)
2431 if (section
->reloc_count
!= 0)
2433 /* Get a copy of the native relocations. */
2434 internal_relocs
= _bfd_elf_link_read_relocs (input_bfd
, section
,
2436 link_info
->keep_memory
);
2437 if (internal_relocs
== NULL
)
2441 /* Get cached copy of section contents if it exists. */
2442 if (elf_section_data (section
)->this_hdr
.contents
!= NULL
)
2443 contents
= elf_section_data (section
)->this_hdr
.contents
;
2446 /* Go get them off disk. */
2447 if (!bfd_malloc_and_get_section (input_bfd
, section
,
2452 sec_shndx
= _bfd_elf_section_from_bfd_section (input_bfd
,
2455 /* Now look for any function in this section which needs
2456 insns deleted from its prologue. */
2457 isymend
= isymbuf
+ symtab_hdr
->sh_info
;
2458 for (isym
= isymbuf
; isym
< isymend
; isym
++)
2460 struct elf32_mn10300_link_hash_entry
*sym_hash
;
2461 asection
*sym_sec
= NULL
;
2462 const char *sym_name
;
2464 struct elf_link_hash_table
*elftab
;
2467 if (isym
->st_shndx
!= sec_shndx
)
2470 if (isym
->st_shndx
== SHN_UNDEF
)
2471 sym_sec
= bfd_und_section_ptr
;
2472 else if (isym
->st_shndx
== SHN_ABS
)
2473 sym_sec
= bfd_abs_section_ptr
;
2474 else if (isym
->st_shndx
== SHN_COMMON
)
2475 sym_sec
= bfd_com_section_ptr
;
2478 = bfd_section_from_elf_index (input_bfd
, isym
->st_shndx
);
2481 = bfd_elf_string_from_elf_section (input_bfd
,
2482 symtab_hdr
->sh_link
,
2485 /* Tack on an ID so we can uniquely identify this
2486 local symbol in the global hash table. */
2487 amt
= strlen (sym_name
) + 10;
2488 new_name
= bfd_malloc (amt
);
2489 if (new_name
== NULL
)
2491 sprintf (new_name
, "%s_%08x", sym_name
, sym_sec
->id
);
2492 sym_name
= new_name
;
2494 elftab
= & hash_table
->static_hash_table
->root
;
2495 sym_hash
= (struct elf32_mn10300_link_hash_entry
*)
2496 elf_link_hash_lookup (elftab
, sym_name
,
2497 FALSE
, FALSE
, FALSE
);
2500 if (sym_hash
== NULL
)
2503 if (! (sym_hash
->flags
& MN10300_CONVERT_CALL_TO_CALLS
)
2504 && ! (sym_hash
->flags
& MN10300_DELETED_PROLOGUE_BYTES
))
2508 /* Note that we've changed things. */
2509 elf_section_data (section
)->relocs
= internal_relocs
;
2510 elf_section_data (section
)->this_hdr
.contents
= contents
;
2511 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
2513 /* Count how many bytes we're going to delete. */
2514 if (sym_hash
->movm_args
)
2517 if (sym_hash
->stack_size
> 0)
2519 if (sym_hash
->stack_size
<= 128)
2525 /* Note that we've deleted prologue bytes for this
2527 sym_hash
->flags
|= MN10300_DELETED_PROLOGUE_BYTES
;
2529 /* Actually delete the bytes. */
2530 if (!mn10300_elf_relax_delete_bytes (input_bfd
,
2536 /* Something changed. Not strictly necessary, but
2537 may lead to more relaxing opportunities. */
2542 /* Look for any global functions in this section which
2543 need insns deleted from their prologues. */
2544 symcount
= (symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
)
2545 - symtab_hdr
->sh_info
);
2546 hashes
= elf_sym_hashes (input_bfd
);
2547 end_hashes
= hashes
+ symcount
;
2548 for (; hashes
< end_hashes
; hashes
++)
2550 struct elf32_mn10300_link_hash_entry
*sym_hash
;
2552 sym_hash
= (struct elf32_mn10300_link_hash_entry
*) *hashes
;
2553 if ((sym_hash
->root
.root
.type
== bfd_link_hash_defined
2554 || sym_hash
->root
.root
.type
== bfd_link_hash_defweak
)
2555 && sym_hash
->root
.root
.u
.def
.section
== section
2556 && ! (sym_hash
->flags
& MN10300_CONVERT_CALL_TO_CALLS
)
2557 && ! (sym_hash
->flags
& MN10300_DELETED_PROLOGUE_BYTES
))
2562 /* Note that we've changed things. */
2563 elf_section_data (section
)->relocs
= internal_relocs
;
2564 elf_section_data (section
)->this_hdr
.contents
= contents
;
2565 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
2567 /* Count how many bytes we're going to delete. */
2568 if (sym_hash
->movm_args
)
2571 if (sym_hash
->stack_size
> 0)
2573 if (sym_hash
->stack_size
<= 128)
2579 /* Note that we've deleted prologue bytes for this
2581 sym_hash
->flags
|= MN10300_DELETED_PROLOGUE_BYTES
;
2583 /* Actually delete the bytes. */
2584 symval
= sym_hash
->root
.root
.u
.def
.value
;
2585 if (!mn10300_elf_relax_delete_bytes (input_bfd
,
2591 /* Something changed. Not strictly necessary, but
2592 may lead to more relaxing opportunities. */
2597 /* Cache or free any memory we allocated for the relocs. */
2598 if (internal_relocs
!= NULL
2599 && elf_section_data (section
)->relocs
!= internal_relocs
)
2600 free (internal_relocs
);
2601 internal_relocs
= NULL
;
2603 /* Cache or free any memory we allocated for the contents. */
2604 if (contents
!= NULL
2605 && elf_section_data (section
)->this_hdr
.contents
!= contents
)
2607 if (! link_info
->keep_memory
)
2610 /* Cache the section contents for elf_link_input_bfd. */
2611 elf_section_data (section
)->this_hdr
.contents
= contents
;
2616 /* Cache or free any memory we allocated for the symbols. */
2618 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
2620 if (! link_info
->keep_memory
)
2623 /* Cache the symbols for elf_link_input_bfd. */
2624 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
2630 /* (Re)initialize for the basic instruction shortening/relaxing pass. */
2632 internal_relocs
= NULL
;
2634 /* For error_return. */
2637 /* We don't have to do anything for a relocatable link, if
2638 this section does not have relocs, or if this is not a
2640 if (link_info
->relocatable
2641 || (sec
->flags
& SEC_RELOC
) == 0
2642 || sec
->reloc_count
== 0
2643 || (sec
->flags
& SEC_CODE
) == 0)
2646 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2648 /* Get a copy of the native relocations. */
2649 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, sec
, NULL
, NULL
,
2650 link_info
->keep_memory
);
2651 if (internal_relocs
== NULL
)
2654 /* Walk through them looking for relaxing opportunities. */
2655 irelend
= internal_relocs
+ sec
->reloc_count
;
2656 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
2659 struct elf32_mn10300_link_hash_entry
*h
= NULL
;
2661 /* If this isn't something that can be relaxed, then ignore
2663 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_NONE
2664 || ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_8
2665 || ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_MAX
)
2668 /* Get the section contents if we haven't done so already. */
2669 if (contents
== NULL
)
2671 /* Get cached copy if it exists. */
2672 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
2673 contents
= elf_section_data (sec
)->this_hdr
.contents
;
2676 /* Go get them off disk. */
2677 if (!bfd_malloc_and_get_section (abfd
, sec
, &contents
))
2682 /* Read this BFD's symbols if we haven't done so already. */
2683 if (isymbuf
== NULL
&& symtab_hdr
->sh_info
!= 0)
2685 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
2686 if (isymbuf
== NULL
)
2687 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
2688 symtab_hdr
->sh_info
, 0,
2690 if (isymbuf
== NULL
)
2694 /* Get the value of the symbol referred to by the reloc. */
2695 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
2697 Elf_Internal_Sym
*isym
;
2698 asection
*sym_sec
= NULL
;
2699 const char *sym_name
;
2702 /* A local symbol. */
2703 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
2704 if (isym
->st_shndx
== SHN_UNDEF
)
2705 sym_sec
= bfd_und_section_ptr
;
2706 else if (isym
->st_shndx
== SHN_ABS
)
2707 sym_sec
= bfd_abs_section_ptr
;
2708 else if (isym
->st_shndx
== SHN_COMMON
)
2709 sym_sec
= bfd_com_section_ptr
;
2711 sym_sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
2713 sym_name
= bfd_elf_string_from_elf_section (abfd
,
2714 symtab_hdr
->sh_link
,
2717 if ((sym_sec
->flags
& SEC_MERGE
)
2718 && ELF_ST_TYPE (isym
->st_info
) == STT_SECTION
2719 && sym_sec
->sec_info_type
== ELF_INFO_TYPE_MERGE
)
2721 bfd_vma saved_addend
;
2723 saved_addend
= irel
->r_addend
;
2724 symval
= _bfd_elf_rela_local_sym (abfd
, isym
, & sym_sec
, irel
);
2725 symval
+= irel
->r_addend
;
2726 irel
->r_addend
= saved_addend
;
2729 symval
= (isym
->st_value
2730 + sym_sec
->output_section
->vma
2731 + sym_sec
->output_offset
);
2733 /* Tack on an ID so we can uniquely identify this
2734 local symbol in the global hash table. */
2735 new_name
= bfd_malloc ((bfd_size_type
) strlen (sym_name
) + 10);
2736 if (new_name
== NULL
)
2738 sprintf (new_name
, "%s_%08x", sym_name
, sym_sec
->id
);
2739 sym_name
= new_name
;
2741 h
= (struct elf32_mn10300_link_hash_entry
*)
2742 elf_link_hash_lookup (&hash_table
->static_hash_table
->root
,
2743 sym_name
, FALSE
, FALSE
, FALSE
);
2750 /* An external symbol. */
2751 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
2752 h
= (struct elf32_mn10300_link_hash_entry
*)
2753 (elf_sym_hashes (abfd
)[indx
]);
2754 BFD_ASSERT (h
!= NULL
);
2755 if (h
->root
.root
.type
!= bfd_link_hash_defined
2756 && h
->root
.root
.type
!= bfd_link_hash_defweak
)
2757 /* This appears to be a reference to an undefined
2758 symbol. Just ignore it--it will be caught by the
2759 regular reloc processing. */
2762 /* Check for a reference to a discarded symbol and ignore it. */
2763 if (h
->root
.root
.u
.def
.section
->output_section
== NULL
)
2766 symval
= (h
->root
.root
.u
.def
.value
2767 + h
->root
.root
.u
.def
.section
->output_section
->vma
2768 + h
->root
.root
.u
.def
.section
->output_offset
);
2771 /* For simplicity of coding, we are going to modify the section
2772 contents, the section relocs, and the BFD symbol table. We
2773 must tell the rest of the code not to free up this
2774 information. It would be possible to instead create a table
2775 of changes which have to be made, as is done in coff-mips.c;
2776 that would be more work, but would require less memory when
2777 the linker is run. */
2779 /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative
2780 branch/call, also deal with "call" -> "calls" conversions and
2781 insertion of prologue data into "call" instructions. */
2782 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_PCREL32
2783 || ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_PLT32
)
2785 bfd_vma value
= symval
;
2787 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_PLT32
2789 && ELF_ST_VISIBILITY (h
->root
.other
) != STV_INTERNAL
2790 && ELF_ST_VISIBILITY (h
->root
.other
) != STV_HIDDEN
2791 && h
->root
.plt
.offset
!= (bfd_vma
) -1)
2795 splt
= bfd_get_section_by_name (elf_hash_table (link_info
)
2798 value
= ((splt
->output_section
->vma
2799 + splt
->output_offset
2800 + h
->root
.plt
.offset
)
2801 - (sec
->output_section
->vma
2802 + sec
->output_offset
2806 /* If we've got a "call" instruction that needs to be turned
2807 into a "calls" instruction, do so now. It saves a byte. */
2808 if (h
&& (h
->flags
& MN10300_CONVERT_CALL_TO_CALLS
))
2812 /* Get the opcode. */
2813 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
2815 /* Make sure we're working with a "call" instruction! */
2818 /* Note that we've changed the relocs, section contents,
2820 elf_section_data (sec
)->relocs
= internal_relocs
;
2821 elf_section_data (sec
)->this_hdr
.contents
= contents
;
2822 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
2824 /* Fix the opcode. */
2825 bfd_put_8 (abfd
, 0xfc, contents
+ irel
->r_offset
- 1);
2826 bfd_put_8 (abfd
, 0xff, contents
+ irel
->r_offset
);
2828 /* Fix irel->r_offset and irel->r_addend. */
2829 irel
->r_offset
+= 1;
2830 irel
->r_addend
+= 1;
2832 /* Delete one byte of data. */
2833 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
2834 irel
->r_offset
+ 3, 1))
2837 /* That will change things, so, we should relax again.
2838 Note that this is not required, and it may be slow. */
2844 /* We've got a "call" instruction which needs some data
2845 from target function filled in. */
2848 /* Get the opcode. */
2849 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
2851 /* Insert data from the target function into the "call"
2852 instruction if needed. */
2855 bfd_put_8 (abfd
, h
->movm_args
, contents
+ irel
->r_offset
+ 4);
2856 bfd_put_8 (abfd
, h
->stack_size
+ h
->movm_stack_size
,
2857 contents
+ irel
->r_offset
+ 5);
2861 /* Deal with pc-relative gunk. */
2862 value
-= (sec
->output_section
->vma
+ sec
->output_offset
);
2863 value
-= irel
->r_offset
;
2864 value
+= irel
->r_addend
;
2866 /* See if the value will fit in 16 bits, note the high value is
2867 0x7fff + 2 as the target will be two bytes closer if we are
2869 if ((long) value
< 0x8001 && (long) value
> -0x8000)
2873 /* Get the opcode. */
2874 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
2876 if (code
!= 0xdc && code
!= 0xdd && code
!= 0xff)
2879 /* Note that we've changed the relocs, section contents, etc. */
2880 elf_section_data (sec
)->relocs
= internal_relocs
;
2881 elf_section_data (sec
)->this_hdr
.contents
= contents
;
2882 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
2884 /* Fix the opcode. */
2886 bfd_put_8 (abfd
, 0xcc, contents
+ irel
->r_offset
- 1);
2887 else if (code
== 0xdd)
2888 bfd_put_8 (abfd
, 0xcd, contents
+ irel
->r_offset
- 1);
2889 else if (code
== 0xff)
2890 bfd_put_8 (abfd
, 0xfa, contents
+ irel
->r_offset
- 2);
2892 /* Fix the relocation's type. */
2893 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
2894 (ELF32_R_TYPE (irel
->r_info
)
2895 == (int) R_MN10300_PLT32
)
2899 /* Delete two bytes of data. */
2900 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
2901 irel
->r_offset
+ 1, 2))
2904 /* That will change things, so, we should relax again.
2905 Note that this is not required, and it may be slow. */
2910 /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative
2912 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_PCREL16
)
2914 bfd_vma value
= symval
;
2916 /* If we've got a "call" instruction that needs to be turned
2917 into a "calls" instruction, do so now. It saves a byte. */
2918 if (h
&& (h
->flags
& MN10300_CONVERT_CALL_TO_CALLS
))
2922 /* Get the opcode. */
2923 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
2925 /* Make sure we're working with a "call" instruction! */
2928 /* Note that we've changed the relocs, section contents,
2930 elf_section_data (sec
)->relocs
= internal_relocs
;
2931 elf_section_data (sec
)->this_hdr
.contents
= contents
;
2932 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
2934 /* Fix the opcode. */
2935 bfd_put_8 (abfd
, 0xfa, contents
+ irel
->r_offset
- 1);
2936 bfd_put_8 (abfd
, 0xff, contents
+ irel
->r_offset
);
2938 /* Fix irel->r_offset and irel->r_addend. */
2939 irel
->r_offset
+= 1;
2940 irel
->r_addend
+= 1;
2942 /* Delete one byte of data. */
2943 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
2944 irel
->r_offset
+ 1, 1))
2947 /* That will change things, so, we should relax again.
2948 Note that this is not required, and it may be slow. */
2956 /* Get the opcode. */
2957 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
2959 /* Insert data from the target function into the "call"
2960 instruction if needed. */
2963 bfd_put_8 (abfd
, h
->movm_args
, contents
+ irel
->r_offset
+ 2);
2964 bfd_put_8 (abfd
, h
->stack_size
+ h
->movm_stack_size
,
2965 contents
+ irel
->r_offset
+ 3);
2969 /* Deal with pc-relative gunk. */
2970 value
-= (sec
->output_section
->vma
+ sec
->output_offset
);
2971 value
-= irel
->r_offset
;
2972 value
+= irel
->r_addend
;
2974 /* See if the value will fit in 8 bits, note the high value is
2975 0x7f + 1 as the target will be one bytes closer if we are
2977 if ((long) value
< 0x80 && (long) value
> -0x80)
2981 /* Get the opcode. */
2982 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
2987 /* Note that we've changed the relocs, section contents, etc. */
2988 elf_section_data (sec
)->relocs
= internal_relocs
;
2989 elf_section_data (sec
)->this_hdr
.contents
= contents
;
2990 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
2992 /* Fix the opcode. */
2993 bfd_put_8 (abfd
, 0xca, contents
+ irel
->r_offset
- 1);
2995 /* Fix the relocation's type. */
2996 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
2999 /* Delete one byte of data. */
3000 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3001 irel
->r_offset
+ 1, 1))
3004 /* That will change things, so, we should relax again.
3005 Note that this is not required, and it may be slow. */
3010 /* Try to eliminate an unconditional 8 bit pc-relative branch
3011 which immediately follows a conditional 8 bit pc-relative
3012 branch around the unconditional branch.
3019 This happens when the bCC can't reach lab2 at assembly time,
3020 but due to other relaxations it can reach at link time. */
3021 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_PCREL8
)
3023 Elf_Internal_Rela
*nrel
;
3024 bfd_vma value
= symval
;
3027 /* Deal with pc-relative gunk. */
3028 value
-= (sec
->output_section
->vma
+ sec
->output_offset
);
3029 value
-= irel
->r_offset
;
3030 value
+= irel
->r_addend
;
3032 /* Do nothing if this reloc is the last byte in the section. */
3033 if (irel
->r_offset
== sec
->size
)
3036 /* See if the next instruction is an unconditional pc-relative
3037 branch, more often than not this test will fail, so we
3038 test it first to speed things up. */
3039 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
+ 1);
3043 /* Also make sure the next relocation applies to the next
3044 instruction and that it's a pc-relative 8 bit branch. */
3047 || irel
->r_offset
+ 2 != nrel
->r_offset
3048 || ELF32_R_TYPE (nrel
->r_info
) != (int) R_MN10300_PCREL8
)
3051 /* Make sure our destination immediately follows the
3052 unconditional branch. */
3053 if (symval
!= (sec
->output_section
->vma
+ sec
->output_offset
3054 + irel
->r_offset
+ 3))
3057 /* Now make sure we are a conditional branch. This may not
3058 be necessary, but why take the chance.
3060 Note these checks assume that R_MN10300_PCREL8 relocs
3061 only occur on bCC and bCCx insns. If they occured
3062 elsewhere, we'd need to know the start of this insn
3063 for this check to be accurate. */
3064 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
3065 if (code
!= 0xc0 && code
!= 0xc1 && code
!= 0xc2
3066 && code
!= 0xc3 && code
!= 0xc4 && code
!= 0xc5
3067 && code
!= 0xc6 && code
!= 0xc7 && code
!= 0xc8
3068 && code
!= 0xc9 && code
!= 0xe8 && code
!= 0xe9
3069 && code
!= 0xea && code
!= 0xeb)
3072 /* We also have to be sure there is no symbol/label
3073 at the unconditional branch. */
3074 if (mn10300_elf_symbol_address_p (abfd
, sec
, isymbuf
,
3075 irel
->r_offset
+ 1))
3078 /* Note that we've changed the relocs, section contents, etc. */
3079 elf_section_data (sec
)->relocs
= internal_relocs
;
3080 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3081 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3083 /* Reverse the condition of the first branch. */
3129 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 1);
3131 /* Set the reloc type and symbol for the first branch
3132 from the second branch. */
3133 irel
->r_info
= nrel
->r_info
;
3135 /* Make the reloc for the second branch a null reloc. */
3136 nrel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (nrel
->r_info
),
3139 /* Delete two bytes of data. */
3140 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3141 irel
->r_offset
+ 1, 2))
3144 /* That will change things, so, we should relax again.
3145 Note that this is not required, and it may be slow. */
3149 /* Try to turn a 24 immediate, displacement or absolute address
3150 into a 8 immediate, displacement or absolute address. */
3151 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_24
)
3153 bfd_vma value
= symval
;
3154 value
+= irel
->r_addend
;
3156 /* See if the value will fit in 8 bits. */
3157 if ((long) value
< 0x7f && (long) value
> -0x80)
3161 /* AM33 insns which have 24 operands are 6 bytes long and
3162 will have 0xfd as the first byte. */
3164 /* Get the first opcode. */
3165 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 3);
3169 /* Get the second opcode. */
3170 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 2);
3172 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
3173 equivalent instructions exists. */
3174 if (code
!= 0x6b && code
!= 0x7b
3175 && code
!= 0x8b && code
!= 0x9b
3176 && ((code
& 0x0f) == 0x09 || (code
& 0x0f) == 0x08
3177 || (code
& 0x0f) == 0x0a || (code
& 0x0f) == 0x0b
3178 || (code
& 0x0f) == 0x0e))
3180 /* Not safe if the high bit is on as relaxing may
3181 move the value out of high mem and thus not fit
3182 in a signed 8bit value. This is currently over
3184 if ((value
& 0x80) == 0)
3186 /* Note that we've changed the relocation contents,
3188 elf_section_data (sec
)->relocs
= internal_relocs
;
3189 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3190 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3192 /* Fix the opcode. */
3193 bfd_put_8 (abfd
, 0xfb, contents
+ irel
->r_offset
- 3);
3194 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 2);
3196 /* Fix the relocation's type. */
3198 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
3201 /* Delete two bytes of data. */
3202 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3203 irel
->r_offset
+ 1, 2))
3206 /* That will change things, so, we should relax
3207 again. Note that this is not required, and it
3217 /* Try to turn a 32bit immediate, displacement or absolute address
3218 into a 16bit immediate, displacement or absolute address. */
3219 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_32
3220 || ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_GOT32
3221 || ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_GOTOFF32
)
3223 bfd_vma value
= symval
;
3225 if (ELF32_R_TYPE (irel
->r_info
) != (int) R_MN10300_32
)
3229 sgot
= bfd_get_section_by_name (elf_hash_table (link_info
)
3232 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_GOT32
)
3234 value
= sgot
->output_offset
;
3237 value
+= h
->root
.got
.offset
;
3239 value
+= (elf_local_got_offsets
3240 (abfd
)[ELF32_R_SYM (irel
->r_info
)]);
3242 else if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_GOTOFF32
)
3243 value
-= sgot
->output_section
->vma
;
3244 else if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_GOTPC32
)
3245 value
= (sgot
->output_section
->vma
3246 - (sec
->output_section
->vma
3247 + sec
->output_offset
3253 value
+= irel
->r_addend
;
3255 /* See if the value will fit in 24 bits.
3256 We allow any 16bit match here. We prune those we can't
3258 if ((long) value
< 0x7fffff && (long) value
> -0x800000)
3262 /* AM33 insns which have 32bit operands are 7 bytes long and
3263 will have 0xfe as the first byte. */
3265 /* Get the first opcode. */
3266 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 3);
3270 /* Get the second opcode. */
3271 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 2);
3273 /* All the am33 32 -> 24 relaxing possibilities. */
3274 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
3275 equivalent instructions exists. */
3276 if (code
!= 0x6b && code
!= 0x7b
3277 && code
!= 0x8b && code
!= 0x9b
3278 && (ELF32_R_TYPE (irel
->r_info
)
3279 != (int) R_MN10300_GOTPC32
)
3280 && ((code
& 0x0f) == 0x09 || (code
& 0x0f) == 0x08
3281 || (code
& 0x0f) == 0x0a || (code
& 0x0f) == 0x0b
3282 || (code
& 0x0f) == 0x0e))
3284 /* Not safe if the high bit is on as relaxing may
3285 move the value out of high mem and thus not fit
3286 in a signed 16bit value. This is currently over
3288 if ((value
& 0x8000) == 0)
3290 /* Note that we've changed the relocation contents,
3292 elf_section_data (sec
)->relocs
= internal_relocs
;
3293 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3294 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3296 /* Fix the opcode. */
3297 bfd_put_8 (abfd
, 0xfd, contents
+ irel
->r_offset
- 3);
3298 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 2);
3300 /* Fix the relocation's type. */
3302 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
3303 (ELF32_R_TYPE (irel
->r_info
)
3304 == (int) R_MN10300_GOTOFF32
)
3305 ? R_MN10300_GOTOFF24
3306 : (ELF32_R_TYPE (irel
->r_info
)
3307 == (int) R_MN10300_GOT32
)
3311 /* Delete one byte of data. */
3312 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3313 irel
->r_offset
+ 3, 1))
3316 /* That will change things, so, we should relax
3317 again. Note that this is not required, and it
3326 /* See if the value will fit in 16 bits.
3327 We allow any 16bit match here. We prune those we can't
3329 if ((long) value
< 0x7fff && (long) value
> -0x8000)
3333 /* Most insns which have 32bit operands are 6 bytes long;
3334 exceptions are pcrel insns and bit insns.
3336 We handle pcrel insns above. We don't bother trying
3337 to handle the bit insns here.
3339 The first byte of the remaining insns will be 0xfc. */
3341 /* Get the first opcode. */
3342 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 2);
3347 /* Get the second opcode. */
3348 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
3350 if ((code
& 0xf0) < 0x80)
3351 switch (code
& 0xf0)
3353 /* mov (d32,am),dn -> mov (d32,am),dn
3354 mov dm,(d32,am) -> mov dn,(d32,am)
3355 mov (d32,am),an -> mov (d32,am),an
3356 mov dm,(d32,am) -> mov dn,(d32,am)
3357 movbu (d32,am),dn -> movbu (d32,am),dn
3358 movbu dm,(d32,am) -> movbu dn,(d32,am)
3359 movhu (d32,am),dn -> movhu (d32,am),dn
3360 movhu dm,(d32,am) -> movhu dn,(d32,am) */
3369 /* Not safe if the high bit is on as relaxing may
3370 move the value out of high mem and thus not fit
3371 in a signed 16bit value. */
3373 && (value
& 0x8000))
3376 /* Note that we've changed the relocation contents, etc. */
3377 elf_section_data (sec
)->relocs
= internal_relocs
;
3378 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3379 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3381 /* Fix the opcode. */
3382 bfd_put_8 (abfd
, 0xfa, contents
+ irel
->r_offset
- 2);
3383 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 1);
3385 /* Fix the relocation's type. */
3386 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
3387 (ELF32_R_TYPE (irel
->r_info
)
3388 == (int) R_MN10300_GOTOFF32
)
3389 ? R_MN10300_GOTOFF16
3390 : (ELF32_R_TYPE (irel
->r_info
)
3391 == (int) R_MN10300_GOT32
)
3393 : (ELF32_R_TYPE (irel
->r_info
)
3394 == (int) R_MN10300_GOTPC32
)
3395 ? R_MN10300_GOTPC16
:
3398 /* Delete two bytes of data. */
3399 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3400 irel
->r_offset
+ 2, 2))
3403 /* That will change things, so, we should relax again.
3404 Note that this is not required, and it may be slow. */
3408 else if ((code
& 0xf0) == 0x80
3409 || (code
& 0xf0) == 0x90)
3410 switch (code
& 0xf3)
3412 /* mov dn,(abs32) -> mov dn,(abs16)
3413 movbu dn,(abs32) -> movbu dn,(abs16)
3414 movhu dn,(abs32) -> movhu dn,(abs16) */
3418 /* Note that we've changed the relocation contents, etc. */
3419 elf_section_data (sec
)->relocs
= internal_relocs
;
3420 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3421 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3423 if ((code
& 0xf3) == 0x81)
3424 code
= 0x01 + (code
& 0x0c);
3425 else if ((code
& 0xf3) == 0x82)
3426 code
= 0x02 + (code
& 0x0c);
3427 else if ((code
& 0xf3) == 0x83)
3428 code
= 0x03 + (code
& 0x0c);
3432 /* Fix the opcode. */
3433 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 2);
3435 /* Fix the relocation's type. */
3436 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
3437 (ELF32_R_TYPE (irel
->r_info
)
3438 == (int) R_MN10300_GOTOFF32
)
3439 ? R_MN10300_GOTOFF16
3440 : (ELF32_R_TYPE (irel
->r_info
)
3441 == (int) R_MN10300_GOT32
)
3443 : (ELF32_R_TYPE (irel
->r_info
)
3444 == (int) R_MN10300_GOTPC32
)
3445 ? R_MN10300_GOTPC16
:
3448 /* The opcode got shorter too, so we have to fix the
3449 addend and offset too! */
3450 irel
->r_offset
-= 1;
3452 /* Delete three bytes of data. */
3453 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3454 irel
->r_offset
+ 1, 3))
3457 /* That will change things, so, we should relax again.
3458 Note that this is not required, and it may be slow. */
3462 /* mov am,(abs32) -> mov am,(abs16)
3463 mov am,(d32,sp) -> mov am,(d16,sp)
3464 mov dm,(d32,sp) -> mov dm,(d32,sp)
3465 movbu dm,(d32,sp) -> movbu dm,(d32,sp)
3466 movhu dm,(d32,sp) -> movhu dm,(d32,sp) */
3472 /* sp-based offsets are zero-extended. */
3473 if (code
>= 0x90 && code
<= 0x93
3474 && (long) value
< 0)
3477 /* Note that we've changed the relocation contents, etc. */
3478 elf_section_data (sec
)->relocs
= internal_relocs
;
3479 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3480 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3482 /* Fix the opcode. */
3483 bfd_put_8 (abfd
, 0xfa, contents
+ irel
->r_offset
- 2);
3484 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 1);
3486 /* Fix the relocation's type. */
3487 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
3488 (ELF32_R_TYPE (irel
->r_info
)
3489 == (int) R_MN10300_GOTOFF32
)
3490 ? R_MN10300_GOTOFF16
3491 : (ELF32_R_TYPE (irel
->r_info
)
3492 == (int) R_MN10300_GOT32
)
3494 : (ELF32_R_TYPE (irel
->r_info
)
3495 == (int) R_MN10300_GOTPC32
)
3496 ? R_MN10300_GOTPC16
:
3499 /* Delete two bytes of data. */
3500 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3501 irel
->r_offset
+ 2, 2))
3504 /* That will change things, so, we should relax again.
3505 Note that this is not required, and it may be slow. */
3509 else if ((code
& 0xf0) < 0xf0)
3510 switch (code
& 0xfc)
3512 /* mov imm32,dn -> mov imm16,dn
3513 mov imm32,an -> mov imm16,an
3514 mov (abs32),dn -> mov (abs16),dn
3515 movbu (abs32),dn -> movbu (abs16),dn
3516 movhu (abs32),dn -> movhu (abs16),dn */
3522 /* Not safe if the high bit is on as relaxing may
3523 move the value out of high mem and thus not fit
3524 in a signed 16bit value. */
3526 && (value
& 0x8000))
3529 /* mov imm16, an zero-extends the immediate. */
3531 && (long) value
< 0)
3534 /* Note that we've changed the relocation contents, etc. */
3535 elf_section_data (sec
)->relocs
= internal_relocs
;
3536 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3537 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3539 if ((code
& 0xfc) == 0xcc)
3540 code
= 0x2c + (code
& 0x03);
3541 else if ((code
& 0xfc) == 0xdc)
3542 code
= 0x24 + (code
& 0x03);
3543 else if ((code
& 0xfc) == 0xa4)
3544 code
= 0x30 + (code
& 0x03);
3545 else if ((code
& 0xfc) == 0xa8)
3546 code
= 0x34 + (code
& 0x03);
3547 else if ((code
& 0xfc) == 0xac)
3548 code
= 0x38 + (code
& 0x03);
3552 /* Fix the opcode. */
3553 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 2);
3555 /* Fix the relocation's type. */
3556 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
3557 (ELF32_R_TYPE (irel
->r_info
)
3558 == (int) R_MN10300_GOTOFF32
)
3559 ? R_MN10300_GOTOFF16
3560 : (ELF32_R_TYPE (irel
->r_info
)
3561 == (int) R_MN10300_GOT32
)
3563 : (ELF32_R_TYPE (irel
->r_info
)
3564 == (int) R_MN10300_GOTPC32
)
3565 ? R_MN10300_GOTPC16
:
3568 /* The opcode got shorter too, so we have to fix the
3569 addend and offset too! */
3570 irel
->r_offset
-= 1;
3572 /* Delete three bytes of data. */
3573 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3574 irel
->r_offset
+ 1, 3))
3577 /* That will change things, so, we should relax again.
3578 Note that this is not required, and it may be slow. */
3582 /* mov (abs32),an -> mov (abs16),an
3583 mov (d32,sp),an -> mov (d16,sp),an
3584 mov (d32,sp),dn -> mov (d16,sp),dn
3585 movbu (d32,sp),dn -> movbu (d16,sp),dn
3586 movhu (d32,sp),dn -> movhu (d16,sp),dn
3587 add imm32,dn -> add imm16,dn
3588 cmp imm32,dn -> cmp imm16,dn
3589 add imm32,an -> add imm16,an
3590 cmp imm32,an -> cmp imm16,an
3591 and imm32,dn -> and imm16,dn
3592 or imm32,dn -> or imm16,dn
3593 xor imm32,dn -> xor imm16,dn
3594 btst imm32,dn -> btst imm16,dn */
3610 /* cmp imm16, an zero-extends the immediate. */
3612 && (long) value
< 0)
3615 /* So do sp-based offsets. */
3616 if (code
>= 0xb0 && code
<= 0xb3
3617 && (long) value
< 0)
3620 /* Note that we've changed the relocation contents, etc. */
3621 elf_section_data (sec
)->relocs
= internal_relocs
;
3622 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3623 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3625 /* Fix the opcode. */
3626 bfd_put_8 (abfd
, 0xfa, contents
+ irel
->r_offset
- 2);
3627 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 1);
3629 /* Fix the relocation's type. */
3630 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
3631 (ELF32_R_TYPE (irel
->r_info
)
3632 == (int) R_MN10300_GOTOFF32
)
3633 ? R_MN10300_GOTOFF16
3634 : (ELF32_R_TYPE (irel
->r_info
)
3635 == (int) R_MN10300_GOT32
)
3637 : (ELF32_R_TYPE (irel
->r_info
)
3638 == (int) R_MN10300_GOTPC32
)
3639 ? R_MN10300_GOTPC16
:
3642 /* Delete two bytes of data. */
3643 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3644 irel
->r_offset
+ 2, 2))
3647 /* That will change things, so, we should relax again.
3648 Note that this is not required, and it may be slow. */
3652 else if (code
== 0xfe)
3654 /* add imm32,sp -> add imm16,sp */
3656 /* Note that we've changed the relocation contents, etc. */
3657 elf_section_data (sec
)->relocs
= internal_relocs
;
3658 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3659 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3661 /* Fix the opcode. */
3662 bfd_put_8 (abfd
, 0xfa, contents
+ irel
->r_offset
- 2);
3663 bfd_put_8 (abfd
, 0xfe, contents
+ irel
->r_offset
- 1);
3665 /* Fix the relocation's type. */
3666 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
3667 (ELF32_R_TYPE (irel
->r_info
)
3668 == (int) R_MN10300_GOT32
)
3670 : (ELF32_R_TYPE (irel
->r_info
)
3671 == (int) R_MN10300_GOTOFF32
)
3672 ? R_MN10300_GOTOFF16
3673 : (ELF32_R_TYPE (irel
->r_info
)
3674 == (int) R_MN10300_GOTPC32
)
3675 ? R_MN10300_GOTPC16
:
3678 /* Delete two bytes of data. */
3679 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3680 irel
->r_offset
+ 2, 2))
3683 /* That will change things, so, we should relax again.
3684 Note that this is not required, and it may be slow. */
3693 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
3695 if (! link_info
->keep_memory
)
3699 /* Cache the symbols for elf_link_input_bfd. */
3700 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3704 if (contents
!= NULL
3705 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
3707 if (! link_info
->keep_memory
)
3711 /* Cache the section contents for elf_link_input_bfd. */
3712 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3716 if (internal_relocs
!= NULL
3717 && elf_section_data (sec
)->relocs
!= internal_relocs
)
3718 free (internal_relocs
);
3724 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
3726 if (contents
!= NULL
3727 && elf_section_data (section
)->this_hdr
.contents
!= contents
)
3729 if (internal_relocs
!= NULL
3730 && elf_section_data (section
)->relocs
!= internal_relocs
)
3731 free (internal_relocs
);
3736 /* This is a version of bfd_generic_get_relocated_section_contents
3737 which uses mn10300_elf_relocate_section. */
3740 mn10300_elf_get_relocated_section_contents (bfd
*output_bfd
,
3741 struct bfd_link_info
*link_info
,
3742 struct bfd_link_order
*link_order
,
3744 bfd_boolean relocatable
,
3747 Elf_Internal_Shdr
*symtab_hdr
;
3748 asection
*input_section
= link_order
->u
.indirect
.section
;
3749 bfd
*input_bfd
= input_section
->owner
;
3750 asection
**sections
= NULL
;
3751 Elf_Internal_Rela
*internal_relocs
= NULL
;
3752 Elf_Internal_Sym
*isymbuf
= NULL
;
3754 /* We only need to handle the case of relaxing, or of having a
3755 particular set of section contents, specially. */
3757 || elf_section_data (input_section
)->this_hdr
.contents
== NULL
)
3758 return bfd_generic_get_relocated_section_contents (output_bfd
, link_info
,
3763 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
3765 memcpy (data
, elf_section_data (input_section
)->this_hdr
.contents
,
3766 (size_t) input_section
->size
);
3768 if ((input_section
->flags
& SEC_RELOC
) != 0
3769 && input_section
->reloc_count
> 0)
3772 Elf_Internal_Sym
*isym
, *isymend
;
3775 internal_relocs
= _bfd_elf_link_read_relocs (input_bfd
, input_section
,
3777 if (internal_relocs
== NULL
)
3780 if (symtab_hdr
->sh_info
!= 0)
3782 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
3783 if (isymbuf
== NULL
)
3784 isymbuf
= bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
3785 symtab_hdr
->sh_info
, 0,
3787 if (isymbuf
== NULL
)
3791 amt
= symtab_hdr
->sh_info
;
3792 amt
*= sizeof (asection
*);
3793 sections
= bfd_malloc (amt
);
3794 if (sections
== NULL
&& amt
!= 0)
3797 isymend
= isymbuf
+ symtab_hdr
->sh_info
;
3798 for (isym
= isymbuf
, secpp
= sections
; isym
< isymend
; ++isym
, ++secpp
)
3802 if (isym
->st_shndx
== SHN_UNDEF
)
3803 isec
= bfd_und_section_ptr
;
3804 else if (isym
->st_shndx
== SHN_ABS
)
3805 isec
= bfd_abs_section_ptr
;
3806 else if (isym
->st_shndx
== SHN_COMMON
)
3807 isec
= bfd_com_section_ptr
;
3809 isec
= bfd_section_from_elf_index (input_bfd
, isym
->st_shndx
);
3814 if (! mn10300_elf_relocate_section (output_bfd
, link_info
, input_bfd
,
3815 input_section
, data
, internal_relocs
,
3819 if (sections
!= NULL
)
3821 if (isymbuf
!= NULL
&& symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
3823 if (internal_relocs
!= elf_section_data (input_section
)->relocs
)
3824 free (internal_relocs
);
3830 if (sections
!= NULL
)
3832 if (isymbuf
!= NULL
&& symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
3834 if (internal_relocs
!= NULL
3835 && internal_relocs
!= elf_section_data (input_section
)->relocs
)
3836 free (internal_relocs
);
3840 /* Assorted hash table functions. */
3842 /* Initialize an entry in the link hash table. */
3844 /* Create an entry in an MN10300 ELF linker hash table. */
3846 static struct bfd_hash_entry
*
3847 elf32_mn10300_link_hash_newfunc (struct bfd_hash_entry
*entry
,
3848 struct bfd_hash_table
*table
,
3851 struct elf32_mn10300_link_hash_entry
*ret
=
3852 (struct elf32_mn10300_link_hash_entry
*) entry
;
3854 /* Allocate the structure if it has not already been allocated by a
3857 ret
= (struct elf32_mn10300_link_hash_entry
*)
3858 bfd_hash_allocate (table
, sizeof (* ret
));
3860 return (struct bfd_hash_entry
*) ret
;
3862 /* Call the allocation method of the superclass. */
3863 ret
= (struct elf32_mn10300_link_hash_entry
*)
3864 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
3868 ret
->direct_calls
= 0;
3869 ret
->stack_size
= 0;
3871 ret
->movm_stack_size
= 0;
3876 return (struct bfd_hash_entry
*) ret
;
3879 /* Create an mn10300 ELF linker hash table. */
3881 static struct bfd_link_hash_table
*
3882 elf32_mn10300_link_hash_table_create (bfd
*abfd
)
3884 struct elf32_mn10300_link_hash_table
*ret
;
3885 bfd_size_type amt
= sizeof (* ret
);
3887 ret
= bfd_malloc (amt
);
3891 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
3892 elf32_mn10300_link_hash_newfunc
,
3893 sizeof (struct elf32_mn10300_link_hash_entry
)))
3900 amt
= sizeof (struct elf_link_hash_table
);
3901 ret
->static_hash_table
= bfd_malloc (amt
);
3902 if (ret
->static_hash_table
== NULL
)
3908 if (!_bfd_elf_link_hash_table_init (&ret
->static_hash_table
->root
, abfd
,
3909 elf32_mn10300_link_hash_newfunc
,
3910 sizeof (struct elf32_mn10300_link_hash_entry
)))
3912 free (ret
->static_hash_table
);
3916 return & ret
->root
.root
;
3919 /* Free an mn10300 ELF linker hash table. */
3922 elf32_mn10300_link_hash_table_free (struct bfd_link_hash_table
*hash
)
3924 struct elf32_mn10300_link_hash_table
*ret
3925 = (struct elf32_mn10300_link_hash_table
*) hash
;
3927 _bfd_generic_link_hash_table_free
3928 ((struct bfd_link_hash_table
*) ret
->static_hash_table
);
3929 _bfd_generic_link_hash_table_free
3930 ((struct bfd_link_hash_table
*) ret
);
3933 static unsigned long
3934 elf_mn10300_mach (flagword flags
)
3936 switch (flags
& EF_MN10300_MACH
)
3938 case E_MN10300_MACH_MN10300
:
3940 return bfd_mach_mn10300
;
3942 case E_MN10300_MACH_AM33
:
3943 return bfd_mach_am33
;
3945 case E_MN10300_MACH_AM33_2
:
3946 return bfd_mach_am33_2
;
3950 /* The final processing done just before writing out a MN10300 ELF object
3951 file. This gets the MN10300 architecture right based on the machine
3955 _bfd_mn10300_elf_final_write_processing (bfd
*abfd
,
3956 bfd_boolean linker ATTRIBUTE_UNUSED
)
3960 switch (bfd_get_mach (abfd
))
3963 case bfd_mach_mn10300
:
3964 val
= E_MN10300_MACH_MN10300
;
3968 val
= E_MN10300_MACH_AM33
;
3971 case bfd_mach_am33_2
:
3972 val
= E_MN10300_MACH_AM33_2
;
3976 elf_elfheader (abfd
)->e_flags
&= ~ (EF_MN10300_MACH
);
3977 elf_elfheader (abfd
)->e_flags
|= val
;
3981 _bfd_mn10300_elf_object_p (bfd
*abfd
)
3983 bfd_default_set_arch_mach (abfd
, bfd_arch_mn10300
,
3984 elf_mn10300_mach (elf_elfheader (abfd
)->e_flags
));
3988 /* Merge backend specific data from an object file to the output
3989 object file when linking. */
3992 _bfd_mn10300_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
3994 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
3995 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
3998 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
3999 && bfd_get_mach (obfd
) < bfd_get_mach (ibfd
))
4001 if (! bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
4002 bfd_get_mach (ibfd
)))
4009 #define PLT0_ENTRY_SIZE 15
4010 #define PLT_ENTRY_SIZE 20
4011 #define PIC_PLT_ENTRY_SIZE 24
4013 static const bfd_byte elf_mn10300_plt0_entry
[PLT0_ENTRY_SIZE
] =
4015 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */
4016 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */
4017 0xf0, 0xf4, /* jmp (a0) */
4020 static const bfd_byte elf_mn10300_plt_entry
[PLT_ENTRY_SIZE
] =
4022 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */
4023 0xf0, 0xf4, /* jmp (a0) */
4024 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
4025 0xdc, 0, 0, 0, 0, /* jmp .plt0 */
4028 static const bfd_byte elf_mn10300_pic_plt_entry
[PIC_PLT_ENTRY_SIZE
] =
4030 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */
4031 0xf0, 0xf4, /* jmp (a0) */
4032 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
4033 0xf8, 0x22, 8, /* mov (8,a2),a0 */
4034 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */
4035 0xf0, 0xf4, /* jmp (a0) */
4038 /* Return size of the first PLT entry. */
4039 #define elf_mn10300_sizeof_plt0(info) \
4040 (info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE)
4042 /* Return size of a PLT entry. */
4043 #define elf_mn10300_sizeof_plt(info) \
4044 (info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE)
4046 /* Return offset of the PLT0 address in an absolute PLT entry. */
4047 #define elf_mn10300_plt_plt0_offset(info) 16
4049 /* Return offset of the linker in PLT0 entry. */
4050 #define elf_mn10300_plt0_linker_offset(info) 2
4052 /* Return offset of the GOT id in PLT0 entry. */
4053 #define elf_mn10300_plt0_gotid_offset(info) 9
4055 /* Return offset of the temporary in PLT entry. */
4056 #define elf_mn10300_plt_temp_offset(info) 8
4058 /* Return offset of the symbol in PLT entry. */
4059 #define elf_mn10300_plt_symbol_offset(info) 2
4061 /* Return offset of the relocation in PLT entry. */
4062 #define elf_mn10300_plt_reloc_offset(info) 11
4064 /* The name of the dynamic interpreter. This is put in the .interp
4067 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
4069 /* Create dynamic sections when linking against a dynamic object. */
4072 _bfd_mn10300_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
4076 const struct elf_backend_data
* bed
= get_elf_backend_data (abfd
);
4079 switch (bed
->s
->arch_size
)
4090 bfd_set_error (bfd_error_bad_value
);
4094 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
4095 .rel[a].bss sections. */
4096 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4097 | SEC_LINKER_CREATED
);
4099 s
= bfd_make_section_with_flags (abfd
,
4100 (bed
->default_use_rela_p
4101 ? ".rela.plt" : ".rel.plt"),
4102 flags
| SEC_READONLY
);
4104 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
4107 if (! _bfd_mn10300_elf_create_got_section (abfd
, info
))
4111 const char * secname
;
4116 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
4118 secflags
= bfd_get_section_flags (abfd
, sec
);
4119 if ((secflags
& (SEC_DATA
| SEC_LINKER_CREATED
))
4120 || ((secflags
& SEC_HAS_CONTENTS
) != SEC_HAS_CONTENTS
))
4123 secname
= bfd_get_section_name (abfd
, sec
);
4124 relname
= bfd_malloc (strlen (secname
) + 6);
4125 strcpy (relname
, ".rela");
4126 strcat (relname
, secname
);
4128 s
= bfd_make_section_with_flags (abfd
, relname
,
4129 flags
| SEC_READONLY
);
4131 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
4136 if (bed
->want_dynbss
)
4138 /* The .dynbss section is a place to put symbols which are defined
4139 by dynamic objects, are referenced by regular objects, and are
4140 not functions. We must allocate space for them in the process
4141 image and use a R_*_COPY reloc to tell the dynamic linker to
4142 initialize them at run time. The linker script puts the .dynbss
4143 section into the .bss section of the final image. */
4144 s
= bfd_make_section_with_flags (abfd
, ".dynbss",
4145 SEC_ALLOC
| SEC_LINKER_CREATED
);
4149 /* The .rel[a].bss section holds copy relocs. This section is not
4150 normally needed. We need to create it here, though, so that the
4151 linker will map it to an output section. We can't just create it
4152 only if we need it, because we will not know whether we need it
4153 until we have seen all the input files, and the first time the
4154 main linker code calls BFD after examining all the input files
4155 (size_dynamic_sections) the input sections have already been
4156 mapped to the output sections. If the section turns out not to
4157 be needed, we can discard it later. We will never need this
4158 section when generating a shared object, since they do not use
4162 s
= bfd_make_section_with_flags (abfd
,
4163 (bed
->default_use_rela_p
4164 ? ".rela.bss" : ".rel.bss"),
4165 flags
| SEC_READONLY
);
4167 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
4175 /* Adjust a symbol defined by a dynamic object and referenced by a
4176 regular object. The current definition is in some section of the
4177 dynamic object, but we're not including those sections. We have to
4178 change the definition to something the rest of the link can
4182 _bfd_mn10300_elf_adjust_dynamic_symbol (struct bfd_link_info
* info
,
4183 struct elf_link_hash_entry
* h
)
4188 dynobj
= elf_hash_table (info
)->dynobj
;
4190 /* Make sure we know what is going on here. */
4191 BFD_ASSERT (dynobj
!= NULL
4193 || h
->u
.weakdef
!= NULL
4196 && !h
->def_regular
)));
4198 /* If this is a function, put it in the procedure linkage table. We
4199 will fill in the contents of the procedure linkage table later,
4200 when we know the address of the .got section. */
4201 if (h
->type
== STT_FUNC
4208 /* This case can occur if we saw a PLT reloc in an input
4209 file, but the symbol was never referred to by a dynamic
4210 object. In such a case, we don't actually need to build
4211 a procedure linkage table, and we can just do a REL32
4213 BFD_ASSERT (h
->needs_plt
);
4217 /* Make sure this symbol is output as a dynamic symbol. */
4218 if (h
->dynindx
== -1)
4220 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
4224 s
= bfd_get_section_by_name (dynobj
, ".plt");
4225 BFD_ASSERT (s
!= NULL
);
4227 /* If this is the first .plt entry, make room for the special
4230 s
->size
+= elf_mn10300_sizeof_plt0 (info
);
4232 /* If this symbol is not defined in a regular file, and we are
4233 not generating a shared library, then set the symbol to this
4234 location in the .plt. This is required to make function
4235 pointers compare as equal between the normal executable and
4236 the shared library. */
4240 h
->root
.u
.def
.section
= s
;
4241 h
->root
.u
.def
.value
= s
->size
;
4244 h
->plt
.offset
= s
->size
;
4246 /* Make room for this entry. */
4247 s
->size
+= elf_mn10300_sizeof_plt (info
);
4249 /* We also need to make an entry in the .got.plt section, which
4250 will be placed in the .got section by the linker script. */
4251 s
= bfd_get_section_by_name (dynobj
, ".got.plt");
4252 BFD_ASSERT (s
!= NULL
);
4255 /* We also need to make an entry in the .rela.plt section. */
4256 s
= bfd_get_section_by_name (dynobj
, ".rela.plt");
4257 BFD_ASSERT (s
!= NULL
);
4258 s
->size
+= sizeof (Elf32_External_Rela
);
4263 /* If this is a weak symbol, and there is a real definition, the
4264 processor independent code will have arranged for us to see the
4265 real definition first, and we can just use the same value. */
4266 if (h
->u
.weakdef
!= NULL
)
4268 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
4269 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
4270 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
4271 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
4275 /* This is a reference to a symbol defined by a dynamic object which
4276 is not a function. */
4278 /* If we are creating a shared library, we must presume that the
4279 only references to the symbol are via the global offset table.
4280 For such cases we need not do anything here; the relocations will
4281 be handled correctly by relocate_section. */
4285 /* If there are no references to this symbol that do not use the
4286 GOT, we don't need to generate a copy reloc. */
4287 if (!h
->non_got_ref
)
4292 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
4293 h
->root
.root
.string
);
4297 /* We must allocate the symbol in our .dynbss section, which will
4298 become part of the .bss section of the executable. There will be
4299 an entry for this symbol in the .dynsym section. The dynamic
4300 object will contain position independent code, so all references
4301 from the dynamic object to this symbol will go through the global
4302 offset table. The dynamic linker will use the .dynsym entry to
4303 determine the address it must put in the global offset table, so
4304 both the dynamic object and the regular object will refer to the
4305 same memory location for the variable. */
4307 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
4308 BFD_ASSERT (s
!= NULL
);
4310 /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to
4311 copy the initial value out of the dynamic object and into the
4312 runtime process image. We need to remember the offset into the
4313 .rela.bss section we are going to use. */
4314 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
4318 srel
= bfd_get_section_by_name (dynobj
, ".rela.bss");
4319 BFD_ASSERT (srel
!= NULL
);
4320 srel
->size
+= sizeof (Elf32_External_Rela
);
4324 return _bfd_elf_adjust_dynamic_copy (h
, s
);
4327 /* Set the sizes of the dynamic sections. */
4330 _bfd_mn10300_elf_size_dynamic_sections (bfd
* output_bfd
,
4331 struct bfd_link_info
* info
)
4337 bfd_boolean reltext
;
4339 dynobj
= elf_hash_table (info
)->dynobj
;
4340 BFD_ASSERT (dynobj
!= NULL
);
4342 if (elf_hash_table (info
)->dynamic_sections_created
)
4344 /* Set the contents of the .interp section to the interpreter. */
4345 if (info
->executable
)
4347 s
= bfd_get_section_by_name (dynobj
, ".interp");
4348 BFD_ASSERT (s
!= NULL
);
4349 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
4350 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
4355 /* We may have created entries in the .rela.got section.
4356 However, if we are not creating the dynamic sections, we will
4357 not actually use these entries. Reset the size of .rela.got,
4358 which will cause it to get stripped from the output file
4360 s
= bfd_get_section_by_name (dynobj
, ".rela.got");
4365 /* The check_relocs and adjust_dynamic_symbol entry points have
4366 determined the sizes of the various dynamic sections. Allocate
4371 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
4375 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
4378 /* It's OK to base decisions on the section name, because none
4379 of the dynobj section names depend upon the input files. */
4380 name
= bfd_get_section_name (dynobj
, s
);
4382 if (streq (name
, ".plt"))
4384 /* Remember whether there is a PLT. */
4387 else if (CONST_STRNEQ (name
, ".rela"))
4393 /* Remember whether there are any reloc sections other
4395 if (! streq (name
, ".rela.plt"))
4397 const char * outname
;
4401 /* If this relocation section applies to a read only
4402 section, then we probably need a DT_TEXTREL
4403 entry. The entries in the .rela.plt section
4404 really apply to the .got section, which we
4405 created ourselves and so know is not readonly. */
4406 outname
= bfd_get_section_name (output_bfd
,
4408 target
= bfd_get_section_by_name (output_bfd
, outname
+ 5);
4410 && (target
->flags
& SEC_READONLY
) != 0
4411 && (target
->flags
& SEC_ALLOC
) != 0)
4415 /* We use the reloc_count field as a counter if we need
4416 to copy relocs into the output file. */
4420 else if (! CONST_STRNEQ (name
, ".got")
4421 && ! streq (name
, ".dynbss"))
4422 /* It's not one of our sections, so don't allocate space. */
4427 /* If we don't need this section, strip it from the
4428 output file. This is mostly to handle .rela.bss and
4429 .rela.plt. We must create both sections in
4430 create_dynamic_sections, because they must be created
4431 before the linker maps input sections to output
4432 sections. The linker does that before
4433 adjust_dynamic_symbol is called, and it is that
4434 function which decides whether anything needs to go
4435 into these sections. */
4436 s
->flags
|= SEC_EXCLUDE
;
4440 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
4443 /* Allocate memory for the section contents. We use bfd_zalloc
4444 here in case unused entries are not reclaimed before the
4445 section's contents are written out. This should not happen,
4446 but this way if it does, we get a R_MN10300_NONE reloc
4447 instead of garbage. */
4448 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
4449 if (s
->contents
== NULL
)
4453 if (elf_hash_table (info
)->dynamic_sections_created
)
4455 /* Add some entries to the .dynamic section. We fill in the
4456 values later, in _bfd_mn10300_elf_finish_dynamic_sections,
4457 but we must add the entries now so that we get the correct
4458 size for the .dynamic section. The DT_DEBUG entry is filled
4459 in by the dynamic linker and used by the debugger. */
4462 if (!_bfd_elf_add_dynamic_entry (info
, DT_DEBUG
, 0))
4468 if (!_bfd_elf_add_dynamic_entry (info
, DT_PLTGOT
, 0)
4469 || !_bfd_elf_add_dynamic_entry (info
, DT_PLTRELSZ
, 0)
4470 || !_bfd_elf_add_dynamic_entry (info
, DT_PLTREL
, DT_RELA
)
4471 || !_bfd_elf_add_dynamic_entry (info
, DT_JMPREL
, 0))
4477 if (!_bfd_elf_add_dynamic_entry (info
, DT_RELA
, 0)
4478 || !_bfd_elf_add_dynamic_entry (info
, DT_RELASZ
, 0)
4479 || !_bfd_elf_add_dynamic_entry (info
, DT_RELAENT
,
4480 sizeof (Elf32_External_Rela
)))
4486 if (!_bfd_elf_add_dynamic_entry (info
, DT_TEXTREL
, 0))
4494 /* Finish up dynamic symbol handling. We set the contents of various
4495 dynamic sections here. */
4498 _bfd_mn10300_elf_finish_dynamic_symbol (bfd
* output_bfd
,
4499 struct bfd_link_info
* info
,
4500 struct elf_link_hash_entry
* h
,
4501 Elf_Internal_Sym
* sym
)
4505 dynobj
= elf_hash_table (info
)->dynobj
;
4507 if (h
->plt
.offset
!= (bfd_vma
) -1)
4514 Elf_Internal_Rela rel
;
4516 /* This symbol has an entry in the procedure linkage table. Set
4519 BFD_ASSERT (h
->dynindx
!= -1);
4521 splt
= bfd_get_section_by_name (dynobj
, ".plt");
4522 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
4523 srel
= bfd_get_section_by_name (dynobj
, ".rela.plt");
4524 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srel
!= NULL
);
4526 /* Get the index in the procedure linkage table which
4527 corresponds to this symbol. This is the index of this symbol
4528 in all the symbols for which we are making plt entries. The
4529 first entry in the procedure linkage table is reserved. */
4530 plt_index
= ((h
->plt
.offset
- elf_mn10300_sizeof_plt0 (info
))
4531 / elf_mn10300_sizeof_plt (info
));
4533 /* Get the offset into the .got table of the entry that
4534 corresponds to this function. Each .got entry is 4 bytes.
4535 The first three are reserved. */
4536 got_offset
= (plt_index
+ 3) * 4;
4538 /* Fill in the entry in the procedure linkage table. */
4541 memcpy (splt
->contents
+ h
->plt
.offset
, elf_mn10300_plt_entry
,
4542 elf_mn10300_sizeof_plt (info
));
4543 bfd_put_32 (output_bfd
,
4544 (sgot
->output_section
->vma
4545 + sgot
->output_offset
4547 (splt
->contents
+ h
->plt
.offset
4548 + elf_mn10300_plt_symbol_offset (info
)));
4550 bfd_put_32 (output_bfd
,
4551 (1 - h
->plt
.offset
- elf_mn10300_plt_plt0_offset (info
)),
4552 (splt
->contents
+ h
->plt
.offset
4553 + elf_mn10300_plt_plt0_offset (info
)));
4557 memcpy (splt
->contents
+ h
->plt
.offset
, elf_mn10300_pic_plt_entry
,
4558 elf_mn10300_sizeof_plt (info
));
4560 bfd_put_32 (output_bfd
, got_offset
,
4561 (splt
->contents
+ h
->plt
.offset
4562 + elf_mn10300_plt_symbol_offset (info
)));
4565 bfd_put_32 (output_bfd
, plt_index
* sizeof (Elf32_External_Rela
),
4566 (splt
->contents
+ h
->plt
.offset
4567 + elf_mn10300_plt_reloc_offset (info
)));
4569 /* Fill in the entry in the global offset table. */
4570 bfd_put_32 (output_bfd
,
4571 (splt
->output_section
->vma
4572 + splt
->output_offset
4574 + elf_mn10300_plt_temp_offset (info
)),
4575 sgot
->contents
+ got_offset
);
4577 /* Fill in the entry in the .rela.plt section. */
4578 rel
.r_offset
= (sgot
->output_section
->vma
4579 + sgot
->output_offset
4581 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_MN10300_JMP_SLOT
);
4583 bfd_elf32_swap_reloca_out (output_bfd
, &rel
,
4584 (bfd_byte
*) ((Elf32_External_Rela
*) srel
->contents
4587 if (!h
->def_regular
)
4588 /* Mark the symbol as undefined, rather than as defined in
4589 the .plt section. Leave the value alone. */
4590 sym
->st_shndx
= SHN_UNDEF
;
4593 if (h
->got
.offset
!= (bfd_vma
) -1)
4597 Elf_Internal_Rela rel
;
4599 /* This symbol has an entry in the global offset table. Set it up. */
4600 sgot
= bfd_get_section_by_name (dynobj
, ".got");
4601 srel
= bfd_get_section_by_name (dynobj
, ".rela.got");
4602 BFD_ASSERT (sgot
!= NULL
&& srel
!= NULL
);
4604 rel
.r_offset
= (sgot
->output_section
->vma
4605 + sgot
->output_offset
4606 + (h
->got
.offset
& ~1));
4608 /* If this is a -Bsymbolic link, and the symbol is defined
4609 locally, we just want to emit a RELATIVE reloc. Likewise if
4610 the symbol was forced to be local because of a version file.
4611 The entry in the global offset table will already have been
4612 initialized in the relocate_section function. */
4614 && (info
->symbolic
|| h
->dynindx
== -1)
4617 rel
.r_info
= ELF32_R_INFO (0, R_MN10300_RELATIVE
);
4618 rel
.r_addend
= (h
->root
.u
.def
.value
4619 + h
->root
.u
.def
.section
->output_section
->vma
4620 + h
->root
.u
.def
.section
->output_offset
);
4624 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
4625 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_MN10300_GLOB_DAT
);
4629 bfd_elf32_swap_reloca_out (output_bfd
, &rel
,
4630 (bfd_byte
*) ((Elf32_External_Rela
*) srel
->contents
4631 + srel
->reloc_count
));
4632 ++ srel
->reloc_count
;
4638 Elf_Internal_Rela rel
;
4640 /* This symbol needs a copy reloc. Set it up. */
4641 BFD_ASSERT (h
->dynindx
!= -1
4642 && (h
->root
.type
== bfd_link_hash_defined
4643 || h
->root
.type
== bfd_link_hash_defweak
));
4645 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
4647 BFD_ASSERT (s
!= NULL
);
4649 rel
.r_offset
= (h
->root
.u
.def
.value
4650 + h
->root
.u
.def
.section
->output_section
->vma
4651 + h
->root
.u
.def
.section
->output_offset
);
4652 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_MN10300_COPY
);
4654 bfd_elf32_swap_reloca_out (output_bfd
, & rel
,
4655 (bfd_byte
*) ((Elf32_External_Rela
*) s
->contents
4660 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4661 if (streq (h
->root
.root
.string
, "_DYNAMIC")
4662 || h
== elf_hash_table (info
)->hgot
)
4663 sym
->st_shndx
= SHN_ABS
;
4668 /* Finish up the dynamic sections. */
4671 _bfd_mn10300_elf_finish_dynamic_sections (bfd
* output_bfd
,
4672 struct bfd_link_info
* info
)
4678 dynobj
= elf_hash_table (info
)->dynobj
;
4680 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
4681 BFD_ASSERT (sgot
!= NULL
);
4682 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
4684 if (elf_hash_table (info
)->dynamic_sections_created
)
4687 Elf32_External_Dyn
* dyncon
;
4688 Elf32_External_Dyn
* dynconend
;
4690 BFD_ASSERT (sdyn
!= NULL
);
4692 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
4693 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
4695 for (; dyncon
< dynconend
; dyncon
++)
4697 Elf_Internal_Dyn dyn
;
4701 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
4715 s
= bfd_get_section_by_name (output_bfd
, name
);
4716 BFD_ASSERT (s
!= NULL
);
4717 dyn
.d_un
.d_ptr
= s
->vma
;
4718 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4722 s
= bfd_get_section_by_name (output_bfd
, ".rela.plt");
4723 BFD_ASSERT (s
!= NULL
);
4724 dyn
.d_un
.d_val
= s
->size
;
4725 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4729 /* My reading of the SVR4 ABI indicates that the
4730 procedure linkage table relocs (DT_JMPREL) should be
4731 included in the overall relocs (DT_RELA). This is
4732 what Solaris does. However, UnixWare can not handle
4733 that case. Therefore, we override the DT_RELASZ entry
4734 here to make it not include the JMPREL relocs. Since
4735 the linker script arranges for .rela.plt to follow all
4736 other relocation sections, we don't have to worry
4737 about changing the DT_RELA entry. */
4738 s
= bfd_get_section_by_name (output_bfd
, ".rela.plt");
4740 dyn
.d_un
.d_val
-= s
->size
;
4741 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4746 /* Fill in the first entry in the procedure linkage table. */
4747 splt
= bfd_get_section_by_name (dynobj
, ".plt");
4748 if (splt
&& splt
->size
> 0)
4752 memcpy (splt
->contents
, elf_mn10300_pic_plt_entry
,
4753 elf_mn10300_sizeof_plt (info
));
4757 memcpy (splt
->contents
, elf_mn10300_plt0_entry
, PLT0_ENTRY_SIZE
);
4758 bfd_put_32 (output_bfd
,
4759 sgot
->output_section
->vma
+ sgot
->output_offset
+ 4,
4760 splt
->contents
+ elf_mn10300_plt0_gotid_offset (info
));
4761 bfd_put_32 (output_bfd
,
4762 sgot
->output_section
->vma
+ sgot
->output_offset
+ 8,
4763 splt
->contents
+ elf_mn10300_plt0_linker_offset (info
));
4766 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4767 really seem like the right value. */
4768 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
4772 /* Fill in the first three entries in the global offset table. */
4776 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
4778 bfd_put_32 (output_bfd
,
4779 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
4781 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
4782 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
4785 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
4790 /* Classify relocation types, such that combreloc can sort them
4793 static enum elf_reloc_type_class
4794 _bfd_mn10300_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
4796 switch ((int) ELF32_R_TYPE (rela
->r_info
))
4798 case R_MN10300_RELATIVE
: return reloc_class_relative
;
4799 case R_MN10300_JMP_SLOT
: return reloc_class_plt
;
4800 case R_MN10300_COPY
: return reloc_class_copy
;
4801 default: return reloc_class_normal
;
4806 #define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec
4807 #define TARGET_LITTLE_NAME "elf32-mn10300"
4808 #define ELF_ARCH bfd_arch_mn10300
4809 #define ELF_MACHINE_CODE EM_MN10300
4810 #define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300
4811 #define ELF_MAXPAGESIZE 0x1000
4814 #define elf_info_to_howto mn10300_info_to_howto
4815 #define elf_info_to_howto_rel 0
4816 #define elf_backend_can_gc_sections 1
4817 #define elf_backend_rela_normal 1
4818 #define elf_backend_check_relocs mn10300_elf_check_relocs
4819 #define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook
4820 #define elf_backend_relocate_section mn10300_elf_relocate_section
4821 #define bfd_elf32_bfd_relax_section mn10300_elf_relax_section
4822 #define bfd_elf32_bfd_get_relocated_section_contents \
4823 mn10300_elf_get_relocated_section_contents
4824 #define bfd_elf32_bfd_link_hash_table_create \
4825 elf32_mn10300_link_hash_table_create
4826 #define bfd_elf32_bfd_link_hash_table_free \
4827 elf32_mn10300_link_hash_table_free
4829 #ifndef elf_symbol_leading_char
4830 #define elf_symbol_leading_char '_'
4833 /* So we can set bits in e_flags. */
4834 #define elf_backend_final_write_processing \
4835 _bfd_mn10300_elf_final_write_processing
4836 #define elf_backend_object_p _bfd_mn10300_elf_object_p
4838 #define bfd_elf32_bfd_merge_private_bfd_data \
4839 _bfd_mn10300_elf_merge_private_bfd_data
4841 #define elf_backend_can_gc_sections 1
4842 #define elf_backend_create_dynamic_sections \
4843 _bfd_mn10300_elf_create_dynamic_sections
4844 #define elf_backend_adjust_dynamic_symbol \
4845 _bfd_mn10300_elf_adjust_dynamic_symbol
4846 #define elf_backend_size_dynamic_sections \
4847 _bfd_mn10300_elf_size_dynamic_sections
4848 #define elf_backend_omit_section_dynsym \
4849 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4850 #define elf_backend_finish_dynamic_symbol \
4851 _bfd_mn10300_elf_finish_dynamic_symbol
4852 #define elf_backend_finish_dynamic_sections \
4853 _bfd_mn10300_elf_finish_dynamic_sections
4855 #define elf_backend_reloc_type_class \
4856 _bfd_mn10300_elf_reloc_type_class
4858 #define elf_backend_want_got_plt 1
4859 #define elf_backend_plt_readonly 1
4860 #define elf_backend_want_plt_sym 0
4861 #define elf_backend_got_header_size 12
4863 #include "elf32-target.h"