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 (sec
->reloc_count
> 0)
1852 /* If there is an align reloc at the end of the section ignore it.
1853 GAS creates these relocs for reasons of its own, and they just
1854 serve to keep the section artifically inflated. */
1855 if (ELF32_R_TYPE ((irelend
- 1)->r_info
) == (int) R_MN10300_ALIGN
)
1858 /* The deletion must stop at the next ALIGN reloc for an aligment
1859 power larger than the number of bytes we are deleting. */
1860 for (; irel
< irelend
; irel
++)
1861 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_ALIGN
1862 && irel
->r_offset
> addr
1863 && irel
->r_offset
< toaddr
1864 && count
< (1 << irel
->r_addend
))
1867 toaddr
= irel
->r_offset
;
1872 /* Actually delete the bytes. */
1873 memmove (contents
+ addr
, contents
+ addr
+ count
,
1874 (size_t) (toaddr
- addr
- count
));
1876 /* Adjust the section's size if we are shrinking it, or else
1877 pad the bytes between the end of the shrunken region and
1878 the start of the next region with NOP codes. */
1879 if (irelalign
== NULL
)
1882 /* Include symbols at the end of the section, but
1883 not at the end of a sub-region of the section. */
1890 #define NOP_OPCODE 0xcb
1892 for (i
= 0; i
< count
; i
++)
1893 bfd_put_8 (abfd
, (bfd_vma
) NOP_OPCODE
, contents
+ toaddr
- count
+ i
);
1896 /* Adjust all the relocs. */
1897 for (irel
= elf_section_data (sec
)->relocs
; irel
< irelend
; irel
++)
1899 /* Get the new reloc address. */
1900 if ((irel
->r_offset
> addr
1901 && irel
->r_offset
< toaddr
))
1902 irel
->r_offset
-= count
;
1905 /* Adjust the local symbols defined in this section. */
1906 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1907 isym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
1908 for (isymend
= isym
+ symtab_hdr
->sh_info
; isym
< isymend
; isym
++)
1910 if (isym
->st_shndx
== sec_shndx
1911 && isym
->st_value
> addr
1912 && isym
->st_value
< toaddr
)
1913 isym
->st_value
-= count
;
1914 /* Adjust the function symbol's size as well. */
1915 else if (isym
->st_shndx
== sec_shndx
1916 && ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
1917 && isym
->st_value
+ isym
->st_size
> addr
1918 && isym
->st_value
+ isym
->st_size
< toaddr
)
1919 isym
->st_size
-= count
;
1922 /* Now adjust the global symbols defined in this section. */
1923 symcount
= (symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
)
1924 - symtab_hdr
->sh_info
);
1925 sym_hashes
= elf_sym_hashes (abfd
);
1926 end_hashes
= sym_hashes
+ symcount
;
1927 for (; sym_hashes
< end_hashes
; sym_hashes
++)
1929 struct elf_link_hash_entry
*sym_hash
= *sym_hashes
;
1931 if ((sym_hash
->root
.type
== bfd_link_hash_defined
1932 || sym_hash
->root
.type
== bfd_link_hash_defweak
)
1933 && sym_hash
->root
.u
.def
.section
== sec
1934 && sym_hash
->root
.u
.def
.value
> addr
1935 && sym_hash
->root
.u
.def
.value
< toaddr
)
1936 sym_hash
->root
.u
.def
.value
-= count
;
1937 /* Adjust the function symbol's size as well. */
1938 else if (sym_hash
->root
.type
== bfd_link_hash_defined
1939 && sym_hash
->root
.u
.def
.section
== sec
1940 && sym_hash
->type
== STT_FUNC
1941 && sym_hash
->root
.u
.def
.value
+ sym_hash
->size
> addr
1942 && sym_hash
->root
.u
.def
.value
+ sym_hash
->size
< toaddr
)
1943 sym_hash
->size
-= count
;
1949 /* Return TRUE if a symbol exists at the given address, else return
1953 mn10300_elf_symbol_address_p (bfd
*abfd
,
1955 Elf_Internal_Sym
*isym
,
1958 Elf_Internal_Shdr
*symtab_hdr
;
1959 unsigned int sec_shndx
;
1960 Elf_Internal_Sym
*isymend
;
1961 struct elf_link_hash_entry
**sym_hashes
;
1962 struct elf_link_hash_entry
**end_hashes
;
1963 unsigned int symcount
;
1965 sec_shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
1967 /* Examine all the symbols. */
1968 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1969 for (isymend
= isym
+ symtab_hdr
->sh_info
; isym
< isymend
; isym
++)
1970 if (isym
->st_shndx
== sec_shndx
1971 && isym
->st_value
== addr
)
1974 symcount
= (symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
)
1975 - symtab_hdr
->sh_info
);
1976 sym_hashes
= elf_sym_hashes (abfd
);
1977 end_hashes
= sym_hashes
+ symcount
;
1978 for (; sym_hashes
< end_hashes
; sym_hashes
++)
1980 struct elf_link_hash_entry
*sym_hash
= *sym_hashes
;
1982 if ((sym_hash
->root
.type
== bfd_link_hash_defined
1983 || sym_hash
->root
.type
== bfd_link_hash_defweak
)
1984 && sym_hash
->root
.u
.def
.section
== sec
1985 && sym_hash
->root
.u
.def
.value
== addr
)
1992 /* This function handles relaxing for the mn10300.
1994 There are quite a few relaxing opportunities available on the mn10300:
1996 * calls:32 -> calls:16 2 bytes
1997 * call:32 -> call:16 2 bytes
1999 * call:32 -> calls:32 1 byte
2000 * call:16 -> calls:16 1 byte
2001 * These are done anytime using "calls" would result
2002 in smaller code, or when necessary to preserve the
2003 meaning of the program.
2007 * In some circumstances we can move instructions
2008 from a function prologue into a "call" instruction.
2009 This is only done if the resulting code is no larger
2010 than the original code.
2012 * jmp:32 -> jmp:16 2 bytes
2013 * jmp:16 -> bra:8 1 byte
2015 * If the previous instruction is a conditional branch
2016 around the jump/bra, we may be able to reverse its condition
2017 and change its target to the jump's target. The jump/bra
2018 can then be deleted. 2 bytes
2020 * mov abs32 -> mov abs16 1 or 2 bytes
2022 * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes
2023 - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes
2025 * Most instructions which accept d32 can relax to d16 1 or 2 bytes
2026 - Most instructions which accept d16 can relax to d8 1 or 2 bytes
2028 We don't handle imm16->imm8 or d16->d8 as they're very rare
2029 and somewhat more difficult to support. */
2032 mn10300_elf_relax_section (bfd
*abfd
,
2034 struct bfd_link_info
*link_info
,
2037 Elf_Internal_Shdr
*symtab_hdr
;
2038 Elf_Internal_Rela
*internal_relocs
= NULL
;
2039 Elf_Internal_Rela
*irel
, *irelend
;
2040 bfd_byte
*contents
= NULL
;
2041 Elf_Internal_Sym
*isymbuf
= NULL
;
2042 struct elf32_mn10300_link_hash_table
*hash_table
;
2043 asection
*section
= sec
;
2045 /* Assume nothing changes. */
2048 /* We need a pointer to the mn10300 specific hash table. */
2049 hash_table
= elf32_mn10300_hash_table (link_info
);
2051 /* Initialize fields in each hash table entry the first time through. */
2052 if ((hash_table
->flags
& MN10300_HASH_ENTRIES_INITIALIZED
) == 0)
2056 /* Iterate over all the input bfds. */
2057 for (input_bfd
= link_info
->input_bfds
;
2059 input_bfd
= input_bfd
->link_next
)
2061 /* We're going to need all the symbols for each bfd. */
2062 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
2063 if (symtab_hdr
->sh_info
!= 0)
2065 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
2066 if (isymbuf
== NULL
)
2067 isymbuf
= bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
2068 symtab_hdr
->sh_info
, 0,
2070 if (isymbuf
== NULL
)
2074 /* Iterate over each section in this bfd. */
2075 for (section
= input_bfd
->sections
;
2077 section
= section
->next
)
2079 struct elf32_mn10300_link_hash_entry
*hash
;
2080 Elf_Internal_Sym
*sym
;
2081 asection
*sym_sec
= NULL
;
2082 const char *sym_name
;
2085 /* If there's nothing to do in this section, skip it. */
2086 if (! ((section
->flags
& SEC_RELOC
) != 0
2087 && section
->reloc_count
!= 0))
2089 if ((section
->flags
& SEC_ALLOC
) == 0)
2092 /* Get cached copy of section contents if it exists. */
2093 if (elf_section_data (section
)->this_hdr
.contents
!= NULL
)
2094 contents
= elf_section_data (section
)->this_hdr
.contents
;
2095 else if (section
->size
!= 0)
2097 /* Go get them off disk. */
2098 if (!bfd_malloc_and_get_section (input_bfd
, section
,
2105 /* If there aren't any relocs, then there's nothing to do. */
2106 if ((section
->flags
& SEC_RELOC
) != 0
2107 && section
->reloc_count
!= 0)
2109 /* Get a copy of the native relocations. */
2110 internal_relocs
= _bfd_elf_link_read_relocs (input_bfd
, section
,
2112 link_info
->keep_memory
);
2113 if (internal_relocs
== NULL
)
2116 /* Now examine each relocation. */
2117 irel
= internal_relocs
;
2118 irelend
= irel
+ section
->reloc_count
;
2119 for (; irel
< irelend
; irel
++)
2122 unsigned long r_index
;
2125 r_type
= ELF32_R_TYPE (irel
->r_info
);
2126 r_index
= ELF32_R_SYM (irel
->r_info
);
2128 if (r_type
< 0 || r_type
>= (int) R_MN10300_MAX
)
2131 /* We need the name and hash table entry of the target
2137 if (r_index
< symtab_hdr
->sh_info
)
2139 /* A local symbol. */
2140 Elf_Internal_Sym
*isym
;
2141 struct elf_link_hash_table
*elftab
;
2144 isym
= isymbuf
+ r_index
;
2145 if (isym
->st_shndx
== SHN_UNDEF
)
2146 sym_sec
= bfd_und_section_ptr
;
2147 else if (isym
->st_shndx
== SHN_ABS
)
2148 sym_sec
= bfd_abs_section_ptr
;
2149 else if (isym
->st_shndx
== SHN_COMMON
)
2150 sym_sec
= bfd_com_section_ptr
;
2153 = bfd_section_from_elf_index (input_bfd
,
2157 = bfd_elf_string_from_elf_section (input_bfd
,
2162 /* If it isn't a function, then we don't care
2164 if (ELF_ST_TYPE (isym
->st_info
) != STT_FUNC
)
2167 /* Tack on an ID so we can uniquely identify this
2168 local symbol in the global hash table. */
2169 amt
= strlen (sym_name
) + 10;
2170 new_name
= bfd_malloc (amt
);
2171 if (new_name
== NULL
)
2174 sprintf (new_name
, "%s_%08x", sym_name
, sym_sec
->id
);
2175 sym_name
= new_name
;
2177 elftab
= &hash_table
->static_hash_table
->root
;
2178 hash
= ((struct elf32_mn10300_link_hash_entry
*)
2179 elf_link_hash_lookup (elftab
, sym_name
,
2180 TRUE
, TRUE
, FALSE
));
2185 r_index
-= symtab_hdr
->sh_info
;
2186 hash
= (struct elf32_mn10300_link_hash_entry
*)
2187 elf_sym_hashes (input_bfd
)[r_index
];
2190 sym_name
= hash
->root
.root
.root
.string
;
2191 if ((section
->flags
& SEC_CODE
) != 0)
2193 /* If this is not a "call" instruction, then we
2194 should convert "call" instructions to "calls"
2196 code
= bfd_get_8 (input_bfd
,
2197 contents
+ irel
->r_offset
- 1);
2198 if (code
!= 0xdd && code
!= 0xcd)
2199 hash
->flags
|= MN10300_CONVERT_CALL_TO_CALLS
;
2202 /* If this is a jump/call, then bump the
2203 direct_calls counter. Else force "call" to
2204 "calls" conversions. */
2205 if (r_type
== R_MN10300_PCREL32
2206 || r_type
== R_MN10300_PLT32
2207 || r_type
== R_MN10300_PLT16
2208 || r_type
== R_MN10300_PCREL16
)
2209 hash
->direct_calls
++;
2211 hash
->flags
|= MN10300_CONVERT_CALL_TO_CALLS
;
2215 /* Now look at the actual contents to get the stack size,
2216 and a list of what registers were saved in the prologue
2218 if ((section
->flags
& SEC_CODE
) != 0)
2220 Elf_Internal_Sym
*isym
, *isymend
;
2221 unsigned int sec_shndx
;
2222 struct elf_link_hash_entry
**hashes
;
2223 struct elf_link_hash_entry
**end_hashes
;
2224 unsigned int symcount
;
2226 sec_shndx
= _bfd_elf_section_from_bfd_section (input_bfd
,
2229 symcount
= (symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
)
2230 - symtab_hdr
->sh_info
);
2231 hashes
= elf_sym_hashes (input_bfd
);
2232 end_hashes
= hashes
+ symcount
;
2234 /* Look at each function defined in this section and
2235 update info for that function. */
2236 isymend
= isymbuf
+ symtab_hdr
->sh_info
;
2237 for (isym
= isymbuf
; isym
< isymend
; isym
++)
2239 if (isym
->st_shndx
== sec_shndx
2240 && ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
)
2242 struct elf_link_hash_table
*elftab
;
2244 struct elf_link_hash_entry
**lhashes
= hashes
;
2246 /* Skip a local symbol if it aliases a
2248 for (; lhashes
< end_hashes
; lhashes
++)
2250 hash
= (struct elf32_mn10300_link_hash_entry
*) *lhashes
;
2251 if ((hash
->root
.root
.type
== bfd_link_hash_defined
2252 || hash
->root
.root
.type
== bfd_link_hash_defweak
)
2253 && hash
->root
.root
.u
.def
.section
== section
2254 && hash
->root
.type
== STT_FUNC
2255 && hash
->root
.root
.u
.def
.value
== isym
->st_value
)
2258 if (lhashes
!= end_hashes
)
2261 if (isym
->st_shndx
== SHN_UNDEF
)
2262 sym_sec
= bfd_und_section_ptr
;
2263 else if (isym
->st_shndx
== SHN_ABS
)
2264 sym_sec
= bfd_abs_section_ptr
;
2265 else if (isym
->st_shndx
== SHN_COMMON
)
2266 sym_sec
= bfd_com_section_ptr
;
2269 = bfd_section_from_elf_index (input_bfd
,
2272 sym_name
= (bfd_elf_string_from_elf_section
2273 (input_bfd
, symtab_hdr
->sh_link
,
2276 /* Tack on an ID so we can uniquely identify this
2277 local symbol in the global hash table. */
2278 amt
= strlen (sym_name
) + 10;
2279 new_name
= bfd_malloc (amt
);
2280 if (new_name
== NULL
)
2283 sprintf (new_name
, "%s_%08x", sym_name
, sym_sec
->id
);
2284 sym_name
= new_name
;
2286 elftab
= &hash_table
->static_hash_table
->root
;
2287 hash
= ((struct elf32_mn10300_link_hash_entry
*)
2288 elf_link_hash_lookup (elftab
, sym_name
,
2289 TRUE
, TRUE
, FALSE
));
2291 compute_function_info (input_bfd
, hash
,
2292 isym
->st_value
, contents
);
2293 hash
->value
= isym
->st_value
;
2297 for (; hashes
< end_hashes
; hashes
++)
2299 hash
= (struct elf32_mn10300_link_hash_entry
*) *hashes
;
2300 if ((hash
->root
.root
.type
== bfd_link_hash_defined
2301 || hash
->root
.root
.type
== bfd_link_hash_defweak
)
2302 && hash
->root
.root
.u
.def
.section
== section
2303 && hash
->root
.type
== STT_FUNC
)
2304 compute_function_info (input_bfd
, hash
,
2305 (hash
)->root
.root
.u
.def
.value
,
2310 /* Cache or free any memory we allocated for the relocs. */
2311 if (internal_relocs
!= NULL
2312 && elf_section_data (section
)->relocs
!= internal_relocs
)
2313 free (internal_relocs
);
2314 internal_relocs
= NULL
;
2316 /* Cache or free any memory we allocated for the contents. */
2317 if (contents
!= NULL
2318 && elf_section_data (section
)->this_hdr
.contents
!= contents
)
2320 if (! link_info
->keep_memory
)
2324 /* Cache the section contents for elf_link_input_bfd. */
2325 elf_section_data (section
)->this_hdr
.contents
= contents
;
2331 /* Cache or free any memory we allocated for the symbols. */
2333 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
2335 if (! link_info
->keep_memory
)
2339 /* Cache the symbols for elf_link_input_bfd. */
2340 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
2346 /* Now iterate on each symbol in the hash table and perform
2347 the final initialization steps on each. */
2348 elf32_mn10300_link_hash_traverse (hash_table
,
2349 elf32_mn10300_finish_hash_table_entry
,
2351 elf32_mn10300_link_hash_traverse (hash_table
->static_hash_table
,
2352 elf32_mn10300_finish_hash_table_entry
,
2356 /* This section of code collects all our local symbols, sorts
2357 them by value, and looks for multiple symbols referring to
2358 the same address. For those symbols, the flags are merged.
2359 At this point, the only flag that can be set is
2360 MN10300_CONVERT_CALL_TO_CALLS, so we simply OR the flags
2362 int static_count
= 0, i
;
2363 struct elf32_mn10300_link_hash_entry
**entries
;
2364 struct elf32_mn10300_link_hash_entry
**ptr
;
2366 elf32_mn10300_link_hash_traverse (hash_table
->static_hash_table
,
2367 elf32_mn10300_count_hash_table_entries
,
2370 entries
= bfd_malloc (static_count
* sizeof (* ptr
));
2373 elf32_mn10300_link_hash_traverse (hash_table
->static_hash_table
,
2374 elf32_mn10300_list_hash_table_entries
,
2377 qsort (entries
, static_count
, sizeof (entries
[0]), sort_by_value
);
2379 for (i
= 0; i
< static_count
- 1; i
++)
2380 if (entries
[i
]->value
&& entries
[i
]->value
== entries
[i
+1]->value
)
2382 int v
= entries
[i
]->flags
;
2385 for (j
= i
+ 1; j
< static_count
&& entries
[j
]->value
== entries
[i
]->value
; j
++)
2386 v
|= entries
[j
]->flags
;
2388 for (j
= i
; j
< static_count
&& entries
[j
]->value
== entries
[i
]->value
; j
++)
2389 entries
[j
]->flags
= v
;
2395 /* All entries in the hash table are fully initialized. */
2396 hash_table
->flags
|= MN10300_HASH_ENTRIES_INITIALIZED
;
2398 /* Now that everything has been initialized, go through each
2399 code section and delete any prologue insns which will be
2400 redundant because their operations will be performed by
2401 a "call" instruction. */
2402 for (input_bfd
= link_info
->input_bfds
;
2404 input_bfd
= input_bfd
->link_next
)
2406 /* We're going to need all the local symbols for each bfd. */
2407 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
2408 if (symtab_hdr
->sh_info
!= 0)
2410 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
2411 if (isymbuf
== NULL
)
2412 isymbuf
= bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
2413 symtab_hdr
->sh_info
, 0,
2415 if (isymbuf
== NULL
)
2419 /* Walk over each section in this bfd. */
2420 for (section
= input_bfd
->sections
;
2422 section
= section
->next
)
2424 unsigned int sec_shndx
;
2425 Elf_Internal_Sym
*isym
, *isymend
;
2426 struct elf_link_hash_entry
**hashes
;
2427 struct elf_link_hash_entry
**end_hashes
;
2428 unsigned int symcount
;
2430 /* Skip non-code sections and empty sections. */
2431 if ((section
->flags
& SEC_CODE
) == 0 || section
->size
== 0)
2434 if (section
->reloc_count
!= 0)
2436 /* Get a copy of the native relocations. */
2437 internal_relocs
= _bfd_elf_link_read_relocs (input_bfd
, section
,
2439 link_info
->keep_memory
);
2440 if (internal_relocs
== NULL
)
2444 /* Get cached copy of section contents if it exists. */
2445 if (elf_section_data (section
)->this_hdr
.contents
!= NULL
)
2446 contents
= elf_section_data (section
)->this_hdr
.contents
;
2449 /* Go get them off disk. */
2450 if (!bfd_malloc_and_get_section (input_bfd
, section
,
2455 sec_shndx
= _bfd_elf_section_from_bfd_section (input_bfd
,
2458 /* Now look for any function in this section which needs
2459 insns deleted from its prologue. */
2460 isymend
= isymbuf
+ symtab_hdr
->sh_info
;
2461 for (isym
= isymbuf
; isym
< isymend
; isym
++)
2463 struct elf32_mn10300_link_hash_entry
*sym_hash
;
2464 asection
*sym_sec
= NULL
;
2465 const char *sym_name
;
2467 struct elf_link_hash_table
*elftab
;
2470 if (isym
->st_shndx
!= sec_shndx
)
2473 if (isym
->st_shndx
== SHN_UNDEF
)
2474 sym_sec
= bfd_und_section_ptr
;
2475 else if (isym
->st_shndx
== SHN_ABS
)
2476 sym_sec
= bfd_abs_section_ptr
;
2477 else if (isym
->st_shndx
== SHN_COMMON
)
2478 sym_sec
= bfd_com_section_ptr
;
2481 = bfd_section_from_elf_index (input_bfd
, isym
->st_shndx
);
2484 = bfd_elf_string_from_elf_section (input_bfd
,
2485 symtab_hdr
->sh_link
,
2488 /* Tack on an ID so we can uniquely identify this
2489 local symbol in the global hash table. */
2490 amt
= strlen (sym_name
) + 10;
2491 new_name
= bfd_malloc (amt
);
2492 if (new_name
== NULL
)
2494 sprintf (new_name
, "%s_%08x", sym_name
, sym_sec
->id
);
2495 sym_name
= new_name
;
2497 elftab
= & hash_table
->static_hash_table
->root
;
2498 sym_hash
= (struct elf32_mn10300_link_hash_entry
*)
2499 elf_link_hash_lookup (elftab
, sym_name
,
2500 FALSE
, FALSE
, FALSE
);
2503 if (sym_hash
== NULL
)
2506 if (! (sym_hash
->flags
& MN10300_CONVERT_CALL_TO_CALLS
)
2507 && ! (sym_hash
->flags
& MN10300_DELETED_PROLOGUE_BYTES
))
2511 /* Note that we've changed things. */
2512 elf_section_data (section
)->relocs
= internal_relocs
;
2513 elf_section_data (section
)->this_hdr
.contents
= contents
;
2514 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
2516 /* Count how many bytes we're going to delete. */
2517 if (sym_hash
->movm_args
)
2520 if (sym_hash
->stack_size
> 0)
2522 if (sym_hash
->stack_size
<= 128)
2528 /* Note that we've deleted prologue bytes for this
2530 sym_hash
->flags
|= MN10300_DELETED_PROLOGUE_BYTES
;
2532 /* Actually delete the bytes. */
2533 if (!mn10300_elf_relax_delete_bytes (input_bfd
,
2539 /* Something changed. Not strictly necessary, but
2540 may lead to more relaxing opportunities. */
2545 /* Look for any global functions in this section which
2546 need insns deleted from their prologues. */
2547 symcount
= (symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
)
2548 - symtab_hdr
->sh_info
);
2549 hashes
= elf_sym_hashes (input_bfd
);
2550 end_hashes
= hashes
+ symcount
;
2551 for (; hashes
< end_hashes
; hashes
++)
2553 struct elf32_mn10300_link_hash_entry
*sym_hash
;
2555 sym_hash
= (struct elf32_mn10300_link_hash_entry
*) *hashes
;
2556 if ((sym_hash
->root
.root
.type
== bfd_link_hash_defined
2557 || sym_hash
->root
.root
.type
== bfd_link_hash_defweak
)
2558 && sym_hash
->root
.root
.u
.def
.section
== section
2559 && ! (sym_hash
->flags
& MN10300_CONVERT_CALL_TO_CALLS
)
2560 && ! (sym_hash
->flags
& MN10300_DELETED_PROLOGUE_BYTES
))
2565 /* Note that we've changed things. */
2566 elf_section_data (section
)->relocs
= internal_relocs
;
2567 elf_section_data (section
)->this_hdr
.contents
= contents
;
2568 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
2570 /* Count how many bytes we're going to delete. */
2571 if (sym_hash
->movm_args
)
2574 if (sym_hash
->stack_size
> 0)
2576 if (sym_hash
->stack_size
<= 128)
2582 /* Note that we've deleted prologue bytes for this
2584 sym_hash
->flags
|= MN10300_DELETED_PROLOGUE_BYTES
;
2586 /* Actually delete the bytes. */
2587 symval
= sym_hash
->root
.root
.u
.def
.value
;
2588 if (!mn10300_elf_relax_delete_bytes (input_bfd
,
2594 /* Something changed. Not strictly necessary, but
2595 may lead to more relaxing opportunities. */
2600 /* Cache or free any memory we allocated for the relocs. */
2601 if (internal_relocs
!= NULL
2602 && elf_section_data (section
)->relocs
!= internal_relocs
)
2603 free (internal_relocs
);
2604 internal_relocs
= NULL
;
2606 /* Cache or free any memory we allocated for the contents. */
2607 if (contents
!= NULL
2608 && elf_section_data (section
)->this_hdr
.contents
!= contents
)
2610 if (! link_info
->keep_memory
)
2613 /* Cache the section contents for elf_link_input_bfd. */
2614 elf_section_data (section
)->this_hdr
.contents
= contents
;
2619 /* Cache or free any memory we allocated for the symbols. */
2621 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
2623 if (! link_info
->keep_memory
)
2626 /* Cache the symbols for elf_link_input_bfd. */
2627 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
2633 /* (Re)initialize for the basic instruction shortening/relaxing pass. */
2635 internal_relocs
= NULL
;
2637 /* For error_return. */
2640 /* We don't have to do anything for a relocatable link, if
2641 this section does not have relocs, or if this is not a
2643 if (link_info
->relocatable
2644 || (sec
->flags
& SEC_RELOC
) == 0
2645 || sec
->reloc_count
== 0
2646 || (sec
->flags
& SEC_CODE
) == 0)
2649 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2651 /* Get a copy of the native relocations. */
2652 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, sec
, NULL
, NULL
,
2653 link_info
->keep_memory
);
2654 if (internal_relocs
== NULL
)
2657 /* Walk through them looking for relaxing opportunities. */
2658 irelend
= internal_relocs
+ sec
->reloc_count
;
2659 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
2662 struct elf32_mn10300_link_hash_entry
*h
= NULL
;
2664 /* If this isn't something that can be relaxed, then ignore
2666 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_NONE
2667 || ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_8
2668 || ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_MAX
)
2671 /* Get the section contents if we haven't done so already. */
2672 if (contents
== NULL
)
2674 /* Get cached copy if it exists. */
2675 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
2676 contents
= elf_section_data (sec
)->this_hdr
.contents
;
2679 /* Go get them off disk. */
2680 if (!bfd_malloc_and_get_section (abfd
, sec
, &contents
))
2685 /* Read this BFD's symbols if we haven't done so already. */
2686 if (isymbuf
== NULL
&& symtab_hdr
->sh_info
!= 0)
2688 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
2689 if (isymbuf
== NULL
)
2690 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
2691 symtab_hdr
->sh_info
, 0,
2693 if (isymbuf
== NULL
)
2697 /* Get the value of the symbol referred to by the reloc. */
2698 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
2700 Elf_Internal_Sym
*isym
;
2701 asection
*sym_sec
= NULL
;
2702 const char *sym_name
;
2705 /* A local symbol. */
2706 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
2707 if (isym
->st_shndx
== SHN_UNDEF
)
2708 sym_sec
= bfd_und_section_ptr
;
2709 else if (isym
->st_shndx
== SHN_ABS
)
2710 sym_sec
= bfd_abs_section_ptr
;
2711 else if (isym
->st_shndx
== SHN_COMMON
)
2712 sym_sec
= bfd_com_section_ptr
;
2714 sym_sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
2716 sym_name
= bfd_elf_string_from_elf_section (abfd
,
2717 symtab_hdr
->sh_link
,
2720 if ((sym_sec
->flags
& SEC_MERGE
)
2721 && ELF_ST_TYPE (isym
->st_info
) == STT_SECTION
2722 && sym_sec
->sec_info_type
== ELF_INFO_TYPE_MERGE
)
2724 bfd_vma saved_addend
;
2726 saved_addend
= irel
->r_addend
;
2727 symval
= _bfd_elf_rela_local_sym (abfd
, isym
, & sym_sec
, irel
);
2728 symval
+= irel
->r_addend
;
2729 irel
->r_addend
= saved_addend
;
2732 symval
= (isym
->st_value
2733 + sym_sec
->output_section
->vma
2734 + sym_sec
->output_offset
);
2736 /* Tack on an ID so we can uniquely identify this
2737 local symbol in the global hash table. */
2738 new_name
= bfd_malloc ((bfd_size_type
) strlen (sym_name
) + 10);
2739 if (new_name
== NULL
)
2741 sprintf (new_name
, "%s_%08x", sym_name
, sym_sec
->id
);
2742 sym_name
= new_name
;
2744 h
= (struct elf32_mn10300_link_hash_entry
*)
2745 elf_link_hash_lookup (&hash_table
->static_hash_table
->root
,
2746 sym_name
, FALSE
, FALSE
, FALSE
);
2753 /* An external symbol. */
2754 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
2755 h
= (struct elf32_mn10300_link_hash_entry
*)
2756 (elf_sym_hashes (abfd
)[indx
]);
2757 BFD_ASSERT (h
!= NULL
);
2758 if (h
->root
.root
.type
!= bfd_link_hash_defined
2759 && h
->root
.root
.type
!= bfd_link_hash_defweak
)
2760 /* This appears to be a reference to an undefined
2761 symbol. Just ignore it--it will be caught by the
2762 regular reloc processing. */
2765 /* Check for a reference to a discarded symbol and ignore it. */
2766 if (h
->root
.root
.u
.def
.section
->output_section
== NULL
)
2769 symval
= (h
->root
.root
.u
.def
.value
2770 + h
->root
.root
.u
.def
.section
->output_section
->vma
2771 + h
->root
.root
.u
.def
.section
->output_offset
);
2774 /* For simplicity of coding, we are going to modify the section
2775 contents, the section relocs, and the BFD symbol table. We
2776 must tell the rest of the code not to free up this
2777 information. It would be possible to instead create a table
2778 of changes which have to be made, as is done in coff-mips.c;
2779 that would be more work, but would require less memory when
2780 the linker is run. */
2782 /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative
2783 branch/call, also deal with "call" -> "calls" conversions and
2784 insertion of prologue data into "call" instructions. */
2785 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_PCREL32
2786 || ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_PLT32
)
2788 bfd_vma value
= symval
;
2790 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_PLT32
2792 && ELF_ST_VISIBILITY (h
->root
.other
) != STV_INTERNAL
2793 && ELF_ST_VISIBILITY (h
->root
.other
) != STV_HIDDEN
2794 && h
->root
.plt
.offset
!= (bfd_vma
) -1)
2798 splt
= bfd_get_section_by_name (elf_hash_table (link_info
)
2801 value
= ((splt
->output_section
->vma
2802 + splt
->output_offset
2803 + h
->root
.plt
.offset
)
2804 - (sec
->output_section
->vma
2805 + sec
->output_offset
2809 /* If we've got a "call" instruction that needs to be turned
2810 into a "calls" instruction, do so now. It saves a byte. */
2811 if (h
&& (h
->flags
& MN10300_CONVERT_CALL_TO_CALLS
))
2815 /* Get the opcode. */
2816 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
2818 /* Make sure we're working with a "call" instruction! */
2821 /* Note that we've changed the relocs, section contents,
2823 elf_section_data (sec
)->relocs
= internal_relocs
;
2824 elf_section_data (sec
)->this_hdr
.contents
= contents
;
2825 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
2827 /* Fix the opcode. */
2828 bfd_put_8 (abfd
, 0xfc, contents
+ irel
->r_offset
- 1);
2829 bfd_put_8 (abfd
, 0xff, contents
+ irel
->r_offset
);
2831 /* Fix irel->r_offset and irel->r_addend. */
2832 irel
->r_offset
+= 1;
2833 irel
->r_addend
+= 1;
2835 /* Delete one byte of data. */
2836 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
2837 irel
->r_offset
+ 3, 1))
2840 /* That will change things, so, we should relax again.
2841 Note that this is not required, and it may be slow. */
2847 /* We've got a "call" instruction which needs some data
2848 from target function filled in. */
2851 /* Get the opcode. */
2852 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
2854 /* Insert data from the target function into the "call"
2855 instruction if needed. */
2858 bfd_put_8 (abfd
, h
->movm_args
, contents
+ irel
->r_offset
+ 4);
2859 bfd_put_8 (abfd
, h
->stack_size
+ h
->movm_stack_size
,
2860 contents
+ irel
->r_offset
+ 5);
2864 /* Deal with pc-relative gunk. */
2865 value
-= (sec
->output_section
->vma
+ sec
->output_offset
);
2866 value
-= irel
->r_offset
;
2867 value
+= irel
->r_addend
;
2869 /* See if the value will fit in 16 bits, note the high value is
2870 0x7fff + 2 as the target will be two bytes closer if we are
2872 if ((long) value
< 0x8001 && (long) value
> -0x8000)
2876 /* Get the opcode. */
2877 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
2879 if (code
!= 0xdc && code
!= 0xdd && code
!= 0xff)
2882 /* Note that we've changed the relocs, section contents, etc. */
2883 elf_section_data (sec
)->relocs
= internal_relocs
;
2884 elf_section_data (sec
)->this_hdr
.contents
= contents
;
2885 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
2887 /* Fix the opcode. */
2889 bfd_put_8 (abfd
, 0xcc, contents
+ irel
->r_offset
- 1);
2890 else if (code
== 0xdd)
2891 bfd_put_8 (abfd
, 0xcd, contents
+ irel
->r_offset
- 1);
2892 else if (code
== 0xff)
2893 bfd_put_8 (abfd
, 0xfa, contents
+ irel
->r_offset
- 2);
2895 /* Fix the relocation's type. */
2896 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
2897 (ELF32_R_TYPE (irel
->r_info
)
2898 == (int) R_MN10300_PLT32
)
2902 /* Delete two bytes of data. */
2903 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
2904 irel
->r_offset
+ 1, 2))
2907 /* That will change things, so, we should relax again.
2908 Note that this is not required, and it may be slow. */
2913 /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative
2915 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_PCREL16
)
2917 bfd_vma value
= symval
;
2919 /* If we've got a "call" instruction that needs to be turned
2920 into a "calls" instruction, do so now. It saves a byte. */
2921 if (h
&& (h
->flags
& MN10300_CONVERT_CALL_TO_CALLS
))
2925 /* Get the opcode. */
2926 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
2928 /* Make sure we're working with a "call" instruction! */
2931 /* Note that we've changed the relocs, section contents,
2933 elf_section_data (sec
)->relocs
= internal_relocs
;
2934 elf_section_data (sec
)->this_hdr
.contents
= contents
;
2935 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
2937 /* Fix the opcode. */
2938 bfd_put_8 (abfd
, 0xfa, contents
+ irel
->r_offset
- 1);
2939 bfd_put_8 (abfd
, 0xff, contents
+ irel
->r_offset
);
2941 /* Fix irel->r_offset and irel->r_addend. */
2942 irel
->r_offset
+= 1;
2943 irel
->r_addend
+= 1;
2945 /* Delete one byte of data. */
2946 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
2947 irel
->r_offset
+ 1, 1))
2950 /* That will change things, so, we should relax again.
2951 Note that this is not required, and it may be slow. */
2959 /* Get the opcode. */
2960 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
2962 /* Insert data from the target function into the "call"
2963 instruction if needed. */
2966 bfd_put_8 (abfd
, h
->movm_args
, contents
+ irel
->r_offset
+ 2);
2967 bfd_put_8 (abfd
, h
->stack_size
+ h
->movm_stack_size
,
2968 contents
+ irel
->r_offset
+ 3);
2972 /* Deal with pc-relative gunk. */
2973 value
-= (sec
->output_section
->vma
+ sec
->output_offset
);
2974 value
-= irel
->r_offset
;
2975 value
+= irel
->r_addend
;
2977 /* See if the value will fit in 8 bits, note the high value is
2978 0x7f + 1 as the target will be one bytes closer if we are
2980 if ((long) value
< 0x80 && (long) value
> -0x80)
2984 /* Get the opcode. */
2985 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
2990 /* Note that we've changed the relocs, section contents, etc. */
2991 elf_section_data (sec
)->relocs
= internal_relocs
;
2992 elf_section_data (sec
)->this_hdr
.contents
= contents
;
2993 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
2995 /* Fix the opcode. */
2996 bfd_put_8 (abfd
, 0xca, contents
+ irel
->r_offset
- 1);
2998 /* Fix the relocation's type. */
2999 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
3002 /* Delete one byte of data. */
3003 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3004 irel
->r_offset
+ 1, 1))
3007 /* That will change things, so, we should relax again.
3008 Note that this is not required, and it may be slow. */
3013 /* Try to eliminate an unconditional 8 bit pc-relative branch
3014 which immediately follows a conditional 8 bit pc-relative
3015 branch around the unconditional branch.
3022 This happens when the bCC can't reach lab2 at assembly time,
3023 but due to other relaxations it can reach at link time. */
3024 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_PCREL8
)
3026 Elf_Internal_Rela
*nrel
;
3027 bfd_vma value
= symval
;
3030 /* Deal with pc-relative gunk. */
3031 value
-= (sec
->output_section
->vma
+ sec
->output_offset
);
3032 value
-= irel
->r_offset
;
3033 value
+= irel
->r_addend
;
3035 /* Do nothing if this reloc is the last byte in the section. */
3036 if (irel
->r_offset
== sec
->size
)
3039 /* See if the next instruction is an unconditional pc-relative
3040 branch, more often than not this test will fail, so we
3041 test it first to speed things up. */
3042 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
+ 1);
3046 /* Also make sure the next relocation applies to the next
3047 instruction and that it's a pc-relative 8 bit branch. */
3050 || irel
->r_offset
+ 2 != nrel
->r_offset
3051 || ELF32_R_TYPE (nrel
->r_info
) != (int) R_MN10300_PCREL8
)
3054 /* Make sure our destination immediately follows the
3055 unconditional branch. */
3056 if (symval
!= (sec
->output_section
->vma
+ sec
->output_offset
3057 + irel
->r_offset
+ 3))
3060 /* Now make sure we are a conditional branch. This may not
3061 be necessary, but why take the chance.
3063 Note these checks assume that R_MN10300_PCREL8 relocs
3064 only occur on bCC and bCCx insns. If they occured
3065 elsewhere, we'd need to know the start of this insn
3066 for this check to be accurate. */
3067 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
3068 if (code
!= 0xc0 && code
!= 0xc1 && code
!= 0xc2
3069 && code
!= 0xc3 && code
!= 0xc4 && code
!= 0xc5
3070 && code
!= 0xc6 && code
!= 0xc7 && code
!= 0xc8
3071 && code
!= 0xc9 && code
!= 0xe8 && code
!= 0xe9
3072 && code
!= 0xea && code
!= 0xeb)
3075 /* We also have to be sure there is no symbol/label
3076 at the unconditional branch. */
3077 if (mn10300_elf_symbol_address_p (abfd
, sec
, isymbuf
,
3078 irel
->r_offset
+ 1))
3081 /* Note that we've changed the relocs, section contents, etc. */
3082 elf_section_data (sec
)->relocs
= internal_relocs
;
3083 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3084 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3086 /* Reverse the condition of the first branch. */
3132 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 1);
3134 /* Set the reloc type and symbol for the first branch
3135 from the second branch. */
3136 irel
->r_info
= nrel
->r_info
;
3138 /* Make the reloc for the second branch a null reloc. */
3139 nrel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (nrel
->r_info
),
3142 /* Delete two bytes of data. */
3143 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3144 irel
->r_offset
+ 1, 2))
3147 /* That will change things, so, we should relax again.
3148 Note that this is not required, and it may be slow. */
3152 /* Try to turn a 24 immediate, displacement or absolute address
3153 into a 8 immediate, displacement or absolute address. */
3154 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_24
)
3156 bfd_vma value
= symval
;
3157 value
+= irel
->r_addend
;
3159 /* See if the value will fit in 8 bits. */
3160 if ((long) value
< 0x7f && (long) value
> -0x80)
3164 /* AM33 insns which have 24 operands are 6 bytes long and
3165 will have 0xfd as the first byte. */
3167 /* Get the first opcode. */
3168 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 3);
3172 /* Get the second opcode. */
3173 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 2);
3175 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
3176 equivalent instructions exists. */
3177 if (code
!= 0x6b && code
!= 0x7b
3178 && code
!= 0x8b && code
!= 0x9b
3179 && ((code
& 0x0f) == 0x09 || (code
& 0x0f) == 0x08
3180 || (code
& 0x0f) == 0x0a || (code
& 0x0f) == 0x0b
3181 || (code
& 0x0f) == 0x0e))
3183 /* Not safe if the high bit is on as relaxing may
3184 move the value out of high mem and thus not fit
3185 in a signed 8bit value. This is currently over
3187 if ((value
& 0x80) == 0)
3189 /* Note that we've changed the relocation contents,
3191 elf_section_data (sec
)->relocs
= internal_relocs
;
3192 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3193 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3195 /* Fix the opcode. */
3196 bfd_put_8 (abfd
, 0xfb, contents
+ irel
->r_offset
- 3);
3197 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 2);
3199 /* Fix the relocation's type. */
3201 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
3204 /* Delete two bytes of data. */
3205 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3206 irel
->r_offset
+ 1, 2))
3209 /* That will change things, so, we should relax
3210 again. Note that this is not required, and it
3220 /* Try to turn a 32bit immediate, displacement or absolute address
3221 into a 16bit immediate, displacement or absolute address. */
3222 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_32
3223 || ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_GOT32
3224 || ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_GOTOFF32
)
3226 bfd_vma value
= symval
;
3228 if (ELF32_R_TYPE (irel
->r_info
) != (int) R_MN10300_32
)
3232 sgot
= bfd_get_section_by_name (elf_hash_table (link_info
)
3235 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_GOT32
)
3237 value
= sgot
->output_offset
;
3240 value
+= h
->root
.got
.offset
;
3242 value
+= (elf_local_got_offsets
3243 (abfd
)[ELF32_R_SYM (irel
->r_info
)]);
3245 else if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_GOTOFF32
)
3246 value
-= sgot
->output_section
->vma
;
3247 else if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_GOTPC32
)
3248 value
= (sgot
->output_section
->vma
3249 - (sec
->output_section
->vma
3250 + sec
->output_offset
3256 value
+= irel
->r_addend
;
3258 /* See if the value will fit in 24 bits.
3259 We allow any 16bit match here. We prune those we can't
3261 if ((long) value
< 0x7fffff && (long) value
> -0x800000)
3265 /* AM33 insns which have 32bit operands are 7 bytes long and
3266 will have 0xfe as the first byte. */
3268 /* Get the first opcode. */
3269 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 3);
3273 /* Get the second opcode. */
3274 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 2);
3276 /* All the am33 32 -> 24 relaxing possibilities. */
3277 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
3278 equivalent instructions exists. */
3279 if (code
!= 0x6b && code
!= 0x7b
3280 && code
!= 0x8b && code
!= 0x9b
3281 && (ELF32_R_TYPE (irel
->r_info
)
3282 != (int) R_MN10300_GOTPC32
)
3283 && ((code
& 0x0f) == 0x09 || (code
& 0x0f) == 0x08
3284 || (code
& 0x0f) == 0x0a || (code
& 0x0f) == 0x0b
3285 || (code
& 0x0f) == 0x0e))
3287 /* Not safe if the high bit is on as relaxing may
3288 move the value out of high mem and thus not fit
3289 in a signed 16bit value. This is currently over
3291 if ((value
& 0x8000) == 0)
3293 /* Note that we've changed the relocation contents,
3295 elf_section_data (sec
)->relocs
= internal_relocs
;
3296 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3297 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3299 /* Fix the opcode. */
3300 bfd_put_8 (abfd
, 0xfd, contents
+ irel
->r_offset
- 3);
3301 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 2);
3303 /* Fix the relocation's type. */
3305 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
3306 (ELF32_R_TYPE (irel
->r_info
)
3307 == (int) R_MN10300_GOTOFF32
)
3308 ? R_MN10300_GOTOFF24
3309 : (ELF32_R_TYPE (irel
->r_info
)
3310 == (int) R_MN10300_GOT32
)
3314 /* Delete one byte of data. */
3315 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3316 irel
->r_offset
+ 3, 1))
3319 /* That will change things, so, we should relax
3320 again. Note that this is not required, and it
3329 /* See if the value will fit in 16 bits.
3330 We allow any 16bit match here. We prune those we can't
3332 if ((long) value
< 0x7fff && (long) value
> -0x8000)
3336 /* Most insns which have 32bit operands are 6 bytes long;
3337 exceptions are pcrel insns and bit insns.
3339 We handle pcrel insns above. We don't bother trying
3340 to handle the bit insns here.
3342 The first byte of the remaining insns will be 0xfc. */
3344 /* Get the first opcode. */
3345 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 2);
3350 /* Get the second opcode. */
3351 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
3353 if ((code
& 0xf0) < 0x80)
3354 switch (code
& 0xf0)
3356 /* mov (d32,am),dn -> mov (d32,am),dn
3357 mov dm,(d32,am) -> mov dn,(d32,am)
3358 mov (d32,am),an -> mov (d32,am),an
3359 mov dm,(d32,am) -> mov dn,(d32,am)
3360 movbu (d32,am),dn -> movbu (d32,am),dn
3361 movbu dm,(d32,am) -> movbu dn,(d32,am)
3362 movhu (d32,am),dn -> movhu (d32,am),dn
3363 movhu dm,(d32,am) -> movhu dn,(d32,am) */
3372 /* Not safe if the high bit is on as relaxing may
3373 move the value out of high mem and thus not fit
3374 in a signed 16bit value. */
3376 && (value
& 0x8000))
3379 /* Note that we've changed the relocation contents, etc. */
3380 elf_section_data (sec
)->relocs
= internal_relocs
;
3381 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3382 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3384 /* Fix the opcode. */
3385 bfd_put_8 (abfd
, 0xfa, contents
+ irel
->r_offset
- 2);
3386 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 1);
3388 /* Fix the relocation's type. */
3389 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
3390 (ELF32_R_TYPE (irel
->r_info
)
3391 == (int) R_MN10300_GOTOFF32
)
3392 ? R_MN10300_GOTOFF16
3393 : (ELF32_R_TYPE (irel
->r_info
)
3394 == (int) R_MN10300_GOT32
)
3396 : (ELF32_R_TYPE (irel
->r_info
)
3397 == (int) R_MN10300_GOTPC32
)
3398 ? R_MN10300_GOTPC16
:
3401 /* Delete two bytes of data. */
3402 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3403 irel
->r_offset
+ 2, 2))
3406 /* That will change things, so, we should relax again.
3407 Note that this is not required, and it may be slow. */
3411 else if ((code
& 0xf0) == 0x80
3412 || (code
& 0xf0) == 0x90)
3413 switch (code
& 0xf3)
3415 /* mov dn,(abs32) -> mov dn,(abs16)
3416 movbu dn,(abs32) -> movbu dn,(abs16)
3417 movhu dn,(abs32) -> movhu dn,(abs16) */
3421 /* Note that we've changed the relocation contents, etc. */
3422 elf_section_data (sec
)->relocs
= internal_relocs
;
3423 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3424 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3426 if ((code
& 0xf3) == 0x81)
3427 code
= 0x01 + (code
& 0x0c);
3428 else if ((code
& 0xf3) == 0x82)
3429 code
= 0x02 + (code
& 0x0c);
3430 else if ((code
& 0xf3) == 0x83)
3431 code
= 0x03 + (code
& 0x0c);
3435 /* Fix the opcode. */
3436 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 2);
3438 /* Fix the relocation's type. */
3439 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
3440 (ELF32_R_TYPE (irel
->r_info
)
3441 == (int) R_MN10300_GOTOFF32
)
3442 ? R_MN10300_GOTOFF16
3443 : (ELF32_R_TYPE (irel
->r_info
)
3444 == (int) R_MN10300_GOT32
)
3446 : (ELF32_R_TYPE (irel
->r_info
)
3447 == (int) R_MN10300_GOTPC32
)
3448 ? R_MN10300_GOTPC16
:
3451 /* The opcode got shorter too, so we have to fix the
3452 addend and offset too! */
3453 irel
->r_offset
-= 1;
3455 /* Delete three bytes of data. */
3456 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3457 irel
->r_offset
+ 1, 3))
3460 /* That will change things, so, we should relax again.
3461 Note that this is not required, and it may be slow. */
3465 /* mov am,(abs32) -> mov am,(abs16)
3466 mov am,(d32,sp) -> mov am,(d16,sp)
3467 mov dm,(d32,sp) -> mov dm,(d32,sp)
3468 movbu dm,(d32,sp) -> movbu dm,(d32,sp)
3469 movhu dm,(d32,sp) -> movhu dm,(d32,sp) */
3475 /* sp-based offsets are zero-extended. */
3476 if (code
>= 0x90 && code
<= 0x93
3477 && (long) value
< 0)
3480 /* Note that we've changed the relocation contents, etc. */
3481 elf_section_data (sec
)->relocs
= internal_relocs
;
3482 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3483 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3485 /* Fix the opcode. */
3486 bfd_put_8 (abfd
, 0xfa, contents
+ irel
->r_offset
- 2);
3487 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 1);
3489 /* Fix the relocation's type. */
3490 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
3491 (ELF32_R_TYPE (irel
->r_info
)
3492 == (int) R_MN10300_GOTOFF32
)
3493 ? R_MN10300_GOTOFF16
3494 : (ELF32_R_TYPE (irel
->r_info
)
3495 == (int) R_MN10300_GOT32
)
3497 : (ELF32_R_TYPE (irel
->r_info
)
3498 == (int) R_MN10300_GOTPC32
)
3499 ? R_MN10300_GOTPC16
:
3502 /* Delete two bytes of data. */
3503 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3504 irel
->r_offset
+ 2, 2))
3507 /* That will change things, so, we should relax again.
3508 Note that this is not required, and it may be slow. */
3512 else if ((code
& 0xf0) < 0xf0)
3513 switch (code
& 0xfc)
3515 /* mov imm32,dn -> mov imm16,dn
3516 mov imm32,an -> mov imm16,an
3517 mov (abs32),dn -> mov (abs16),dn
3518 movbu (abs32),dn -> movbu (abs16),dn
3519 movhu (abs32),dn -> movhu (abs16),dn */
3525 /* Not safe if the high bit is on as relaxing may
3526 move the value out of high mem and thus not fit
3527 in a signed 16bit value. */
3529 && (value
& 0x8000))
3532 /* mov imm16, an zero-extends the immediate. */
3534 && (long) value
< 0)
3537 /* Note that we've changed the relocation contents, etc. */
3538 elf_section_data (sec
)->relocs
= internal_relocs
;
3539 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3540 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3542 if ((code
& 0xfc) == 0xcc)
3543 code
= 0x2c + (code
& 0x03);
3544 else if ((code
& 0xfc) == 0xdc)
3545 code
= 0x24 + (code
& 0x03);
3546 else if ((code
& 0xfc) == 0xa4)
3547 code
= 0x30 + (code
& 0x03);
3548 else if ((code
& 0xfc) == 0xa8)
3549 code
= 0x34 + (code
& 0x03);
3550 else if ((code
& 0xfc) == 0xac)
3551 code
= 0x38 + (code
& 0x03);
3555 /* Fix the opcode. */
3556 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 2);
3558 /* Fix the relocation's type. */
3559 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
3560 (ELF32_R_TYPE (irel
->r_info
)
3561 == (int) R_MN10300_GOTOFF32
)
3562 ? R_MN10300_GOTOFF16
3563 : (ELF32_R_TYPE (irel
->r_info
)
3564 == (int) R_MN10300_GOT32
)
3566 : (ELF32_R_TYPE (irel
->r_info
)
3567 == (int) R_MN10300_GOTPC32
)
3568 ? R_MN10300_GOTPC16
:
3571 /* The opcode got shorter too, so we have to fix the
3572 addend and offset too! */
3573 irel
->r_offset
-= 1;
3575 /* Delete three bytes of data. */
3576 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3577 irel
->r_offset
+ 1, 3))
3580 /* That will change things, so, we should relax again.
3581 Note that this is not required, and it may be slow. */
3585 /* mov (abs32),an -> mov (abs16),an
3586 mov (d32,sp),an -> mov (d16,sp),an
3587 mov (d32,sp),dn -> mov (d16,sp),dn
3588 movbu (d32,sp),dn -> movbu (d16,sp),dn
3589 movhu (d32,sp),dn -> movhu (d16,sp),dn
3590 add imm32,dn -> add imm16,dn
3591 cmp imm32,dn -> cmp imm16,dn
3592 add imm32,an -> add imm16,an
3593 cmp imm32,an -> cmp imm16,an
3594 and imm32,dn -> and imm16,dn
3595 or imm32,dn -> or imm16,dn
3596 xor imm32,dn -> xor imm16,dn
3597 btst imm32,dn -> btst imm16,dn */
3613 /* cmp imm16, an zero-extends the immediate. */
3615 && (long) value
< 0)
3618 /* So do sp-based offsets. */
3619 if (code
>= 0xb0 && code
<= 0xb3
3620 && (long) value
< 0)
3623 /* Note that we've changed the relocation contents, etc. */
3624 elf_section_data (sec
)->relocs
= internal_relocs
;
3625 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3626 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3628 /* Fix the opcode. */
3629 bfd_put_8 (abfd
, 0xfa, contents
+ irel
->r_offset
- 2);
3630 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 1);
3632 /* Fix the relocation's type. */
3633 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
3634 (ELF32_R_TYPE (irel
->r_info
)
3635 == (int) R_MN10300_GOTOFF32
)
3636 ? R_MN10300_GOTOFF16
3637 : (ELF32_R_TYPE (irel
->r_info
)
3638 == (int) R_MN10300_GOT32
)
3640 : (ELF32_R_TYPE (irel
->r_info
)
3641 == (int) R_MN10300_GOTPC32
)
3642 ? R_MN10300_GOTPC16
:
3645 /* Delete two bytes of data. */
3646 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3647 irel
->r_offset
+ 2, 2))
3650 /* That will change things, so, we should relax again.
3651 Note that this is not required, and it may be slow. */
3655 else if (code
== 0xfe)
3657 /* add imm32,sp -> add imm16,sp */
3659 /* Note that we've changed the relocation contents, etc. */
3660 elf_section_data (sec
)->relocs
= internal_relocs
;
3661 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3662 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3664 /* Fix the opcode. */
3665 bfd_put_8 (abfd
, 0xfa, contents
+ irel
->r_offset
- 2);
3666 bfd_put_8 (abfd
, 0xfe, contents
+ irel
->r_offset
- 1);
3668 /* Fix the relocation's type. */
3669 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
3670 (ELF32_R_TYPE (irel
->r_info
)
3671 == (int) R_MN10300_GOT32
)
3673 : (ELF32_R_TYPE (irel
->r_info
)
3674 == (int) R_MN10300_GOTOFF32
)
3675 ? R_MN10300_GOTOFF16
3676 : (ELF32_R_TYPE (irel
->r_info
)
3677 == (int) R_MN10300_GOTPC32
)
3678 ? R_MN10300_GOTPC16
:
3681 /* Delete two bytes of data. */
3682 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3683 irel
->r_offset
+ 2, 2))
3686 /* That will change things, so, we should relax again.
3687 Note that this is not required, and it may be slow. */
3696 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
3698 if (! link_info
->keep_memory
)
3702 /* Cache the symbols for elf_link_input_bfd. */
3703 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3707 if (contents
!= NULL
3708 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
3710 if (! link_info
->keep_memory
)
3714 /* Cache the section contents for elf_link_input_bfd. */
3715 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3719 if (internal_relocs
!= NULL
3720 && elf_section_data (sec
)->relocs
!= internal_relocs
)
3721 free (internal_relocs
);
3727 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
3729 if (contents
!= NULL
3730 && elf_section_data (section
)->this_hdr
.contents
!= contents
)
3732 if (internal_relocs
!= NULL
3733 && elf_section_data (section
)->relocs
!= internal_relocs
)
3734 free (internal_relocs
);
3739 /* This is a version of bfd_generic_get_relocated_section_contents
3740 which uses mn10300_elf_relocate_section. */
3743 mn10300_elf_get_relocated_section_contents (bfd
*output_bfd
,
3744 struct bfd_link_info
*link_info
,
3745 struct bfd_link_order
*link_order
,
3747 bfd_boolean relocatable
,
3750 Elf_Internal_Shdr
*symtab_hdr
;
3751 asection
*input_section
= link_order
->u
.indirect
.section
;
3752 bfd
*input_bfd
= input_section
->owner
;
3753 asection
**sections
= NULL
;
3754 Elf_Internal_Rela
*internal_relocs
= NULL
;
3755 Elf_Internal_Sym
*isymbuf
= NULL
;
3757 /* We only need to handle the case of relaxing, or of having a
3758 particular set of section contents, specially. */
3760 || elf_section_data (input_section
)->this_hdr
.contents
== NULL
)
3761 return bfd_generic_get_relocated_section_contents (output_bfd
, link_info
,
3766 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
3768 memcpy (data
, elf_section_data (input_section
)->this_hdr
.contents
,
3769 (size_t) input_section
->size
);
3771 if ((input_section
->flags
& SEC_RELOC
) != 0
3772 && input_section
->reloc_count
> 0)
3775 Elf_Internal_Sym
*isym
, *isymend
;
3778 internal_relocs
= _bfd_elf_link_read_relocs (input_bfd
, input_section
,
3780 if (internal_relocs
== NULL
)
3783 if (symtab_hdr
->sh_info
!= 0)
3785 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
3786 if (isymbuf
== NULL
)
3787 isymbuf
= bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
3788 symtab_hdr
->sh_info
, 0,
3790 if (isymbuf
== NULL
)
3794 amt
= symtab_hdr
->sh_info
;
3795 amt
*= sizeof (asection
*);
3796 sections
= bfd_malloc (amt
);
3797 if (sections
== NULL
&& amt
!= 0)
3800 isymend
= isymbuf
+ symtab_hdr
->sh_info
;
3801 for (isym
= isymbuf
, secpp
= sections
; isym
< isymend
; ++isym
, ++secpp
)
3805 if (isym
->st_shndx
== SHN_UNDEF
)
3806 isec
= bfd_und_section_ptr
;
3807 else if (isym
->st_shndx
== SHN_ABS
)
3808 isec
= bfd_abs_section_ptr
;
3809 else if (isym
->st_shndx
== SHN_COMMON
)
3810 isec
= bfd_com_section_ptr
;
3812 isec
= bfd_section_from_elf_index (input_bfd
, isym
->st_shndx
);
3817 if (! mn10300_elf_relocate_section (output_bfd
, link_info
, input_bfd
,
3818 input_section
, data
, internal_relocs
,
3822 if (sections
!= NULL
)
3824 if (isymbuf
!= NULL
&& symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
3826 if (internal_relocs
!= elf_section_data (input_section
)->relocs
)
3827 free (internal_relocs
);
3833 if (sections
!= NULL
)
3835 if (isymbuf
!= NULL
&& symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
3837 if (internal_relocs
!= NULL
3838 && internal_relocs
!= elf_section_data (input_section
)->relocs
)
3839 free (internal_relocs
);
3843 /* Assorted hash table functions. */
3845 /* Initialize an entry in the link hash table. */
3847 /* Create an entry in an MN10300 ELF linker hash table. */
3849 static struct bfd_hash_entry
*
3850 elf32_mn10300_link_hash_newfunc (struct bfd_hash_entry
*entry
,
3851 struct bfd_hash_table
*table
,
3854 struct elf32_mn10300_link_hash_entry
*ret
=
3855 (struct elf32_mn10300_link_hash_entry
*) entry
;
3857 /* Allocate the structure if it has not already been allocated by a
3860 ret
= (struct elf32_mn10300_link_hash_entry
*)
3861 bfd_hash_allocate (table
, sizeof (* ret
));
3863 return (struct bfd_hash_entry
*) ret
;
3865 /* Call the allocation method of the superclass. */
3866 ret
= (struct elf32_mn10300_link_hash_entry
*)
3867 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
3871 ret
->direct_calls
= 0;
3872 ret
->stack_size
= 0;
3874 ret
->movm_stack_size
= 0;
3879 return (struct bfd_hash_entry
*) ret
;
3882 /* Create an mn10300 ELF linker hash table. */
3884 static struct bfd_link_hash_table
*
3885 elf32_mn10300_link_hash_table_create (bfd
*abfd
)
3887 struct elf32_mn10300_link_hash_table
*ret
;
3888 bfd_size_type amt
= sizeof (* ret
);
3890 ret
= bfd_malloc (amt
);
3894 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
3895 elf32_mn10300_link_hash_newfunc
,
3896 sizeof (struct elf32_mn10300_link_hash_entry
)))
3903 amt
= sizeof (struct elf_link_hash_table
);
3904 ret
->static_hash_table
= bfd_malloc (amt
);
3905 if (ret
->static_hash_table
== NULL
)
3911 if (!_bfd_elf_link_hash_table_init (&ret
->static_hash_table
->root
, abfd
,
3912 elf32_mn10300_link_hash_newfunc
,
3913 sizeof (struct elf32_mn10300_link_hash_entry
)))
3915 free (ret
->static_hash_table
);
3919 return & ret
->root
.root
;
3922 /* Free an mn10300 ELF linker hash table. */
3925 elf32_mn10300_link_hash_table_free (struct bfd_link_hash_table
*hash
)
3927 struct elf32_mn10300_link_hash_table
*ret
3928 = (struct elf32_mn10300_link_hash_table
*) hash
;
3930 _bfd_generic_link_hash_table_free
3931 ((struct bfd_link_hash_table
*) ret
->static_hash_table
);
3932 _bfd_generic_link_hash_table_free
3933 ((struct bfd_link_hash_table
*) ret
);
3936 static unsigned long
3937 elf_mn10300_mach (flagword flags
)
3939 switch (flags
& EF_MN10300_MACH
)
3941 case E_MN10300_MACH_MN10300
:
3943 return bfd_mach_mn10300
;
3945 case E_MN10300_MACH_AM33
:
3946 return bfd_mach_am33
;
3948 case E_MN10300_MACH_AM33_2
:
3949 return bfd_mach_am33_2
;
3953 /* The final processing done just before writing out a MN10300 ELF object
3954 file. This gets the MN10300 architecture right based on the machine
3958 _bfd_mn10300_elf_final_write_processing (bfd
*abfd
,
3959 bfd_boolean linker ATTRIBUTE_UNUSED
)
3963 switch (bfd_get_mach (abfd
))
3966 case bfd_mach_mn10300
:
3967 val
= E_MN10300_MACH_MN10300
;
3971 val
= E_MN10300_MACH_AM33
;
3974 case bfd_mach_am33_2
:
3975 val
= E_MN10300_MACH_AM33_2
;
3979 elf_elfheader (abfd
)->e_flags
&= ~ (EF_MN10300_MACH
);
3980 elf_elfheader (abfd
)->e_flags
|= val
;
3984 _bfd_mn10300_elf_object_p (bfd
*abfd
)
3986 bfd_default_set_arch_mach (abfd
, bfd_arch_mn10300
,
3987 elf_mn10300_mach (elf_elfheader (abfd
)->e_flags
));
3991 /* Merge backend specific data from an object file to the output
3992 object file when linking. */
3995 _bfd_mn10300_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
3997 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
3998 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
4001 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
4002 && bfd_get_mach (obfd
) < bfd_get_mach (ibfd
))
4004 if (! bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
4005 bfd_get_mach (ibfd
)))
4012 #define PLT0_ENTRY_SIZE 15
4013 #define PLT_ENTRY_SIZE 20
4014 #define PIC_PLT_ENTRY_SIZE 24
4016 static const bfd_byte elf_mn10300_plt0_entry
[PLT0_ENTRY_SIZE
] =
4018 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */
4019 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */
4020 0xf0, 0xf4, /* jmp (a0) */
4023 static const bfd_byte elf_mn10300_plt_entry
[PLT_ENTRY_SIZE
] =
4025 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */
4026 0xf0, 0xf4, /* jmp (a0) */
4027 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
4028 0xdc, 0, 0, 0, 0, /* jmp .plt0 */
4031 static const bfd_byte elf_mn10300_pic_plt_entry
[PIC_PLT_ENTRY_SIZE
] =
4033 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */
4034 0xf0, 0xf4, /* jmp (a0) */
4035 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
4036 0xf8, 0x22, 8, /* mov (8,a2),a0 */
4037 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */
4038 0xf0, 0xf4, /* jmp (a0) */
4041 /* Return size of the first PLT entry. */
4042 #define elf_mn10300_sizeof_plt0(info) \
4043 (info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE)
4045 /* Return size of a PLT entry. */
4046 #define elf_mn10300_sizeof_plt(info) \
4047 (info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE)
4049 /* Return offset of the PLT0 address in an absolute PLT entry. */
4050 #define elf_mn10300_plt_plt0_offset(info) 16
4052 /* Return offset of the linker in PLT0 entry. */
4053 #define elf_mn10300_plt0_linker_offset(info) 2
4055 /* Return offset of the GOT id in PLT0 entry. */
4056 #define elf_mn10300_plt0_gotid_offset(info) 9
4058 /* Return offset of the temporary in PLT entry. */
4059 #define elf_mn10300_plt_temp_offset(info) 8
4061 /* Return offset of the symbol in PLT entry. */
4062 #define elf_mn10300_plt_symbol_offset(info) 2
4064 /* Return offset of the relocation in PLT entry. */
4065 #define elf_mn10300_plt_reloc_offset(info) 11
4067 /* The name of the dynamic interpreter. This is put in the .interp
4070 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
4072 /* Create dynamic sections when linking against a dynamic object. */
4075 _bfd_mn10300_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
4079 const struct elf_backend_data
* bed
= get_elf_backend_data (abfd
);
4082 switch (bed
->s
->arch_size
)
4093 bfd_set_error (bfd_error_bad_value
);
4097 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
4098 .rel[a].bss sections. */
4099 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4100 | SEC_LINKER_CREATED
);
4102 s
= bfd_make_section_with_flags (abfd
,
4103 (bed
->default_use_rela_p
4104 ? ".rela.plt" : ".rel.plt"),
4105 flags
| SEC_READONLY
);
4107 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
4110 if (! _bfd_mn10300_elf_create_got_section (abfd
, info
))
4114 const char * secname
;
4119 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
4121 secflags
= bfd_get_section_flags (abfd
, sec
);
4122 if ((secflags
& (SEC_DATA
| SEC_LINKER_CREATED
))
4123 || ((secflags
& SEC_HAS_CONTENTS
) != SEC_HAS_CONTENTS
))
4126 secname
= bfd_get_section_name (abfd
, sec
);
4127 relname
= bfd_malloc (strlen (secname
) + 6);
4128 strcpy (relname
, ".rela");
4129 strcat (relname
, secname
);
4131 s
= bfd_make_section_with_flags (abfd
, relname
,
4132 flags
| SEC_READONLY
);
4134 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
4139 if (bed
->want_dynbss
)
4141 /* The .dynbss section is a place to put symbols which are defined
4142 by dynamic objects, are referenced by regular objects, and are
4143 not functions. We must allocate space for them in the process
4144 image and use a R_*_COPY reloc to tell the dynamic linker to
4145 initialize them at run time. The linker script puts the .dynbss
4146 section into the .bss section of the final image. */
4147 s
= bfd_make_section_with_flags (abfd
, ".dynbss",
4148 SEC_ALLOC
| SEC_LINKER_CREATED
);
4152 /* The .rel[a].bss section holds copy relocs. This section is not
4153 normally needed. We need to create it here, though, so that the
4154 linker will map it to an output section. We can't just create it
4155 only if we need it, because we will not know whether we need it
4156 until we have seen all the input files, and the first time the
4157 main linker code calls BFD after examining all the input files
4158 (size_dynamic_sections) the input sections have already been
4159 mapped to the output sections. If the section turns out not to
4160 be needed, we can discard it later. We will never need this
4161 section when generating a shared object, since they do not use
4165 s
= bfd_make_section_with_flags (abfd
,
4166 (bed
->default_use_rela_p
4167 ? ".rela.bss" : ".rel.bss"),
4168 flags
| SEC_READONLY
);
4170 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
4178 /* Adjust a symbol defined by a dynamic object and referenced by a
4179 regular object. The current definition is in some section of the
4180 dynamic object, but we're not including those sections. We have to
4181 change the definition to something the rest of the link can
4185 _bfd_mn10300_elf_adjust_dynamic_symbol (struct bfd_link_info
* info
,
4186 struct elf_link_hash_entry
* h
)
4191 dynobj
= elf_hash_table (info
)->dynobj
;
4193 /* Make sure we know what is going on here. */
4194 BFD_ASSERT (dynobj
!= NULL
4196 || h
->u
.weakdef
!= NULL
4199 && !h
->def_regular
)));
4201 /* If this is a function, put it in the procedure linkage table. We
4202 will fill in the contents of the procedure linkage table later,
4203 when we know the address of the .got section. */
4204 if (h
->type
== STT_FUNC
4211 /* This case can occur if we saw a PLT reloc in an input
4212 file, but the symbol was never referred to by a dynamic
4213 object. In such a case, we don't actually need to build
4214 a procedure linkage table, and we can just do a REL32
4216 BFD_ASSERT (h
->needs_plt
);
4220 /* Make sure this symbol is output as a dynamic symbol. */
4221 if (h
->dynindx
== -1)
4223 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
4227 s
= bfd_get_section_by_name (dynobj
, ".plt");
4228 BFD_ASSERT (s
!= NULL
);
4230 /* If this is the first .plt entry, make room for the special
4233 s
->size
+= elf_mn10300_sizeof_plt0 (info
);
4235 /* If this symbol is not defined in a regular file, and we are
4236 not generating a shared library, then set the symbol to this
4237 location in the .plt. This is required to make function
4238 pointers compare as equal between the normal executable and
4239 the shared library. */
4243 h
->root
.u
.def
.section
= s
;
4244 h
->root
.u
.def
.value
= s
->size
;
4247 h
->plt
.offset
= s
->size
;
4249 /* Make room for this entry. */
4250 s
->size
+= elf_mn10300_sizeof_plt (info
);
4252 /* We also need to make an entry in the .got.plt section, which
4253 will be placed in the .got section by the linker script. */
4254 s
= bfd_get_section_by_name (dynobj
, ".got.plt");
4255 BFD_ASSERT (s
!= NULL
);
4258 /* We also need to make an entry in the .rela.plt section. */
4259 s
= bfd_get_section_by_name (dynobj
, ".rela.plt");
4260 BFD_ASSERT (s
!= NULL
);
4261 s
->size
+= sizeof (Elf32_External_Rela
);
4266 /* If this is a weak symbol, and there is a real definition, the
4267 processor independent code will have arranged for us to see the
4268 real definition first, and we can just use the same value. */
4269 if (h
->u
.weakdef
!= NULL
)
4271 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
4272 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
4273 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
4274 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
4278 /* This is a reference to a symbol defined by a dynamic object which
4279 is not a function. */
4281 /* If we are creating a shared library, we must presume that the
4282 only references to the symbol are via the global offset table.
4283 For such cases we need not do anything here; the relocations will
4284 be handled correctly by relocate_section. */
4288 /* If there are no references to this symbol that do not use the
4289 GOT, we don't need to generate a copy reloc. */
4290 if (!h
->non_got_ref
)
4295 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
4296 h
->root
.root
.string
);
4300 /* We must allocate the symbol in our .dynbss section, which will
4301 become part of the .bss section of the executable. There will be
4302 an entry for this symbol in the .dynsym section. The dynamic
4303 object will contain position independent code, so all references
4304 from the dynamic object to this symbol will go through the global
4305 offset table. The dynamic linker will use the .dynsym entry to
4306 determine the address it must put in the global offset table, so
4307 both the dynamic object and the regular object will refer to the
4308 same memory location for the variable. */
4310 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
4311 BFD_ASSERT (s
!= NULL
);
4313 /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to
4314 copy the initial value out of the dynamic object and into the
4315 runtime process image. We need to remember the offset into the
4316 .rela.bss section we are going to use. */
4317 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
4321 srel
= bfd_get_section_by_name (dynobj
, ".rela.bss");
4322 BFD_ASSERT (srel
!= NULL
);
4323 srel
->size
+= sizeof (Elf32_External_Rela
);
4327 return _bfd_elf_adjust_dynamic_copy (h
, s
);
4330 /* Set the sizes of the dynamic sections. */
4333 _bfd_mn10300_elf_size_dynamic_sections (bfd
* output_bfd
,
4334 struct bfd_link_info
* info
)
4340 bfd_boolean reltext
;
4342 dynobj
= elf_hash_table (info
)->dynobj
;
4343 BFD_ASSERT (dynobj
!= NULL
);
4345 if (elf_hash_table (info
)->dynamic_sections_created
)
4347 /* Set the contents of the .interp section to the interpreter. */
4348 if (info
->executable
)
4350 s
= bfd_get_section_by_name (dynobj
, ".interp");
4351 BFD_ASSERT (s
!= NULL
);
4352 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
4353 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
4358 /* We may have created entries in the .rela.got section.
4359 However, if we are not creating the dynamic sections, we will
4360 not actually use these entries. Reset the size of .rela.got,
4361 which will cause it to get stripped from the output file
4363 s
= bfd_get_section_by_name (dynobj
, ".rela.got");
4368 /* The check_relocs and adjust_dynamic_symbol entry points have
4369 determined the sizes of the various dynamic sections. Allocate
4374 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
4378 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
4381 /* It's OK to base decisions on the section name, because none
4382 of the dynobj section names depend upon the input files. */
4383 name
= bfd_get_section_name (dynobj
, s
);
4385 if (streq (name
, ".plt"))
4387 /* Remember whether there is a PLT. */
4390 else if (CONST_STRNEQ (name
, ".rela"))
4396 /* Remember whether there are any reloc sections other
4398 if (! streq (name
, ".rela.plt"))
4400 const char * outname
;
4404 /* If this relocation section applies to a read only
4405 section, then we probably need a DT_TEXTREL
4406 entry. The entries in the .rela.plt section
4407 really apply to the .got section, which we
4408 created ourselves and so know is not readonly. */
4409 outname
= bfd_get_section_name (output_bfd
,
4411 target
= bfd_get_section_by_name (output_bfd
, outname
+ 5);
4413 && (target
->flags
& SEC_READONLY
) != 0
4414 && (target
->flags
& SEC_ALLOC
) != 0)
4418 /* We use the reloc_count field as a counter if we need
4419 to copy relocs into the output file. */
4423 else if (! CONST_STRNEQ (name
, ".got")
4424 && ! streq (name
, ".dynbss"))
4425 /* It's not one of our sections, so don't allocate space. */
4430 /* If we don't need this section, strip it from the
4431 output file. This is mostly to handle .rela.bss and
4432 .rela.plt. We must create both sections in
4433 create_dynamic_sections, because they must be created
4434 before the linker maps input sections to output
4435 sections. The linker does that before
4436 adjust_dynamic_symbol is called, and it is that
4437 function which decides whether anything needs to go
4438 into these sections. */
4439 s
->flags
|= SEC_EXCLUDE
;
4443 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
4446 /* Allocate memory for the section contents. We use bfd_zalloc
4447 here in case unused entries are not reclaimed before the
4448 section's contents are written out. This should not happen,
4449 but this way if it does, we get a R_MN10300_NONE reloc
4450 instead of garbage. */
4451 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
4452 if (s
->contents
== NULL
)
4456 if (elf_hash_table (info
)->dynamic_sections_created
)
4458 /* Add some entries to the .dynamic section. We fill in the
4459 values later, in _bfd_mn10300_elf_finish_dynamic_sections,
4460 but we must add the entries now so that we get the correct
4461 size for the .dynamic section. The DT_DEBUG entry is filled
4462 in by the dynamic linker and used by the debugger. */
4465 if (!_bfd_elf_add_dynamic_entry (info
, DT_DEBUG
, 0))
4471 if (!_bfd_elf_add_dynamic_entry (info
, DT_PLTGOT
, 0)
4472 || !_bfd_elf_add_dynamic_entry (info
, DT_PLTRELSZ
, 0)
4473 || !_bfd_elf_add_dynamic_entry (info
, DT_PLTREL
, DT_RELA
)
4474 || !_bfd_elf_add_dynamic_entry (info
, DT_JMPREL
, 0))
4480 if (!_bfd_elf_add_dynamic_entry (info
, DT_RELA
, 0)
4481 || !_bfd_elf_add_dynamic_entry (info
, DT_RELASZ
, 0)
4482 || !_bfd_elf_add_dynamic_entry (info
, DT_RELAENT
,
4483 sizeof (Elf32_External_Rela
)))
4489 if (!_bfd_elf_add_dynamic_entry (info
, DT_TEXTREL
, 0))
4497 /* Finish up dynamic symbol handling. We set the contents of various
4498 dynamic sections here. */
4501 _bfd_mn10300_elf_finish_dynamic_symbol (bfd
* output_bfd
,
4502 struct bfd_link_info
* info
,
4503 struct elf_link_hash_entry
* h
,
4504 Elf_Internal_Sym
* sym
)
4508 dynobj
= elf_hash_table (info
)->dynobj
;
4510 if (h
->plt
.offset
!= (bfd_vma
) -1)
4517 Elf_Internal_Rela rel
;
4519 /* This symbol has an entry in the procedure linkage table. Set
4522 BFD_ASSERT (h
->dynindx
!= -1);
4524 splt
= bfd_get_section_by_name (dynobj
, ".plt");
4525 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
4526 srel
= bfd_get_section_by_name (dynobj
, ".rela.plt");
4527 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srel
!= NULL
);
4529 /* Get the index in the procedure linkage table which
4530 corresponds to this symbol. This is the index of this symbol
4531 in all the symbols for which we are making plt entries. The
4532 first entry in the procedure linkage table is reserved. */
4533 plt_index
= ((h
->plt
.offset
- elf_mn10300_sizeof_plt0 (info
))
4534 / elf_mn10300_sizeof_plt (info
));
4536 /* Get the offset into the .got table of the entry that
4537 corresponds to this function. Each .got entry is 4 bytes.
4538 The first three are reserved. */
4539 got_offset
= (plt_index
+ 3) * 4;
4541 /* Fill in the entry in the procedure linkage table. */
4544 memcpy (splt
->contents
+ h
->plt
.offset
, elf_mn10300_plt_entry
,
4545 elf_mn10300_sizeof_plt (info
));
4546 bfd_put_32 (output_bfd
,
4547 (sgot
->output_section
->vma
4548 + sgot
->output_offset
4550 (splt
->contents
+ h
->plt
.offset
4551 + elf_mn10300_plt_symbol_offset (info
)));
4553 bfd_put_32 (output_bfd
,
4554 (1 - h
->plt
.offset
- elf_mn10300_plt_plt0_offset (info
)),
4555 (splt
->contents
+ h
->plt
.offset
4556 + elf_mn10300_plt_plt0_offset (info
)));
4560 memcpy (splt
->contents
+ h
->plt
.offset
, elf_mn10300_pic_plt_entry
,
4561 elf_mn10300_sizeof_plt (info
));
4563 bfd_put_32 (output_bfd
, got_offset
,
4564 (splt
->contents
+ h
->plt
.offset
4565 + elf_mn10300_plt_symbol_offset (info
)));
4568 bfd_put_32 (output_bfd
, plt_index
* sizeof (Elf32_External_Rela
),
4569 (splt
->contents
+ h
->plt
.offset
4570 + elf_mn10300_plt_reloc_offset (info
)));
4572 /* Fill in the entry in the global offset table. */
4573 bfd_put_32 (output_bfd
,
4574 (splt
->output_section
->vma
4575 + splt
->output_offset
4577 + elf_mn10300_plt_temp_offset (info
)),
4578 sgot
->contents
+ got_offset
);
4580 /* Fill in the entry in the .rela.plt section. */
4581 rel
.r_offset
= (sgot
->output_section
->vma
4582 + sgot
->output_offset
4584 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_MN10300_JMP_SLOT
);
4586 bfd_elf32_swap_reloca_out (output_bfd
, &rel
,
4587 (bfd_byte
*) ((Elf32_External_Rela
*) srel
->contents
4590 if (!h
->def_regular
)
4591 /* Mark the symbol as undefined, rather than as defined in
4592 the .plt section. Leave the value alone. */
4593 sym
->st_shndx
= SHN_UNDEF
;
4596 if (h
->got
.offset
!= (bfd_vma
) -1)
4600 Elf_Internal_Rela rel
;
4602 /* This symbol has an entry in the global offset table. Set it up. */
4603 sgot
= bfd_get_section_by_name (dynobj
, ".got");
4604 srel
= bfd_get_section_by_name (dynobj
, ".rela.got");
4605 BFD_ASSERT (sgot
!= NULL
&& srel
!= NULL
);
4607 rel
.r_offset
= (sgot
->output_section
->vma
4608 + sgot
->output_offset
4609 + (h
->got
.offset
& ~1));
4611 /* If this is a -Bsymbolic link, and the symbol is defined
4612 locally, we just want to emit a RELATIVE reloc. Likewise if
4613 the symbol was forced to be local because of a version file.
4614 The entry in the global offset table will already have been
4615 initialized in the relocate_section function. */
4617 && (info
->symbolic
|| h
->dynindx
== -1)
4620 rel
.r_info
= ELF32_R_INFO (0, R_MN10300_RELATIVE
);
4621 rel
.r_addend
= (h
->root
.u
.def
.value
4622 + h
->root
.u
.def
.section
->output_section
->vma
4623 + h
->root
.u
.def
.section
->output_offset
);
4627 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
4628 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_MN10300_GLOB_DAT
);
4632 bfd_elf32_swap_reloca_out (output_bfd
, &rel
,
4633 (bfd_byte
*) ((Elf32_External_Rela
*) srel
->contents
4634 + srel
->reloc_count
));
4635 ++ srel
->reloc_count
;
4641 Elf_Internal_Rela rel
;
4643 /* This symbol needs a copy reloc. Set it up. */
4644 BFD_ASSERT (h
->dynindx
!= -1
4645 && (h
->root
.type
== bfd_link_hash_defined
4646 || h
->root
.type
== bfd_link_hash_defweak
));
4648 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
4650 BFD_ASSERT (s
!= NULL
);
4652 rel
.r_offset
= (h
->root
.u
.def
.value
4653 + h
->root
.u
.def
.section
->output_section
->vma
4654 + h
->root
.u
.def
.section
->output_offset
);
4655 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_MN10300_COPY
);
4657 bfd_elf32_swap_reloca_out (output_bfd
, & rel
,
4658 (bfd_byte
*) ((Elf32_External_Rela
*) s
->contents
4663 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4664 if (streq (h
->root
.root
.string
, "_DYNAMIC")
4665 || h
== elf_hash_table (info
)->hgot
)
4666 sym
->st_shndx
= SHN_ABS
;
4671 /* Finish up the dynamic sections. */
4674 _bfd_mn10300_elf_finish_dynamic_sections (bfd
* output_bfd
,
4675 struct bfd_link_info
* info
)
4681 dynobj
= elf_hash_table (info
)->dynobj
;
4683 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
4684 BFD_ASSERT (sgot
!= NULL
);
4685 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
4687 if (elf_hash_table (info
)->dynamic_sections_created
)
4690 Elf32_External_Dyn
* dyncon
;
4691 Elf32_External_Dyn
* dynconend
;
4693 BFD_ASSERT (sdyn
!= NULL
);
4695 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
4696 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
4698 for (; dyncon
< dynconend
; dyncon
++)
4700 Elf_Internal_Dyn dyn
;
4704 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
4718 s
= bfd_get_section_by_name (output_bfd
, name
);
4719 BFD_ASSERT (s
!= NULL
);
4720 dyn
.d_un
.d_ptr
= s
->vma
;
4721 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4725 s
= bfd_get_section_by_name (output_bfd
, ".rela.plt");
4726 BFD_ASSERT (s
!= NULL
);
4727 dyn
.d_un
.d_val
= s
->size
;
4728 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4732 /* My reading of the SVR4 ABI indicates that the
4733 procedure linkage table relocs (DT_JMPREL) should be
4734 included in the overall relocs (DT_RELA). This is
4735 what Solaris does. However, UnixWare can not handle
4736 that case. Therefore, we override the DT_RELASZ entry
4737 here to make it not include the JMPREL relocs. Since
4738 the linker script arranges for .rela.plt to follow all
4739 other relocation sections, we don't have to worry
4740 about changing the DT_RELA entry. */
4741 s
= bfd_get_section_by_name (output_bfd
, ".rela.plt");
4743 dyn
.d_un
.d_val
-= s
->size
;
4744 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4749 /* Fill in the first entry in the procedure linkage table. */
4750 splt
= bfd_get_section_by_name (dynobj
, ".plt");
4751 if (splt
&& splt
->size
> 0)
4755 memcpy (splt
->contents
, elf_mn10300_pic_plt_entry
,
4756 elf_mn10300_sizeof_plt (info
));
4760 memcpy (splt
->contents
, elf_mn10300_plt0_entry
, PLT0_ENTRY_SIZE
);
4761 bfd_put_32 (output_bfd
,
4762 sgot
->output_section
->vma
+ sgot
->output_offset
+ 4,
4763 splt
->contents
+ elf_mn10300_plt0_gotid_offset (info
));
4764 bfd_put_32 (output_bfd
,
4765 sgot
->output_section
->vma
+ sgot
->output_offset
+ 8,
4766 splt
->contents
+ elf_mn10300_plt0_linker_offset (info
));
4769 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4770 really seem like the right value. */
4771 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
4775 /* Fill in the first three entries in the global offset table. */
4779 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
4781 bfd_put_32 (output_bfd
,
4782 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
4784 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
4785 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
4788 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
4793 /* Classify relocation types, such that combreloc can sort them
4796 static enum elf_reloc_type_class
4797 _bfd_mn10300_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
4799 switch ((int) ELF32_R_TYPE (rela
->r_info
))
4801 case R_MN10300_RELATIVE
: return reloc_class_relative
;
4802 case R_MN10300_JMP_SLOT
: return reloc_class_plt
;
4803 case R_MN10300_COPY
: return reloc_class_copy
;
4804 default: return reloc_class_normal
;
4809 #define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec
4810 #define TARGET_LITTLE_NAME "elf32-mn10300"
4811 #define ELF_ARCH bfd_arch_mn10300
4812 #define ELF_MACHINE_CODE EM_MN10300
4813 #define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300
4814 #define ELF_MAXPAGESIZE 0x1000
4817 #define elf_info_to_howto mn10300_info_to_howto
4818 #define elf_info_to_howto_rel 0
4819 #define elf_backend_can_gc_sections 1
4820 #define elf_backend_rela_normal 1
4821 #define elf_backend_check_relocs mn10300_elf_check_relocs
4822 #define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook
4823 #define elf_backend_relocate_section mn10300_elf_relocate_section
4824 #define bfd_elf32_bfd_relax_section mn10300_elf_relax_section
4825 #define bfd_elf32_bfd_get_relocated_section_contents \
4826 mn10300_elf_get_relocated_section_contents
4827 #define bfd_elf32_bfd_link_hash_table_create \
4828 elf32_mn10300_link_hash_table_create
4829 #define bfd_elf32_bfd_link_hash_table_free \
4830 elf32_mn10300_link_hash_table_free
4832 #ifndef elf_symbol_leading_char
4833 #define elf_symbol_leading_char '_'
4836 /* So we can set bits in e_flags. */
4837 #define elf_backend_final_write_processing \
4838 _bfd_mn10300_elf_final_write_processing
4839 #define elf_backend_object_p _bfd_mn10300_elf_object_p
4841 #define bfd_elf32_bfd_merge_private_bfd_data \
4842 _bfd_mn10300_elf_merge_private_bfd_data
4844 #define elf_backend_can_gc_sections 1
4845 #define elf_backend_create_dynamic_sections \
4846 _bfd_mn10300_elf_create_dynamic_sections
4847 #define elf_backend_adjust_dynamic_symbol \
4848 _bfd_mn10300_elf_adjust_dynamic_symbol
4849 #define elf_backend_size_dynamic_sections \
4850 _bfd_mn10300_elf_size_dynamic_sections
4851 #define elf_backend_omit_section_dynsym \
4852 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4853 #define elf_backend_finish_dynamic_symbol \
4854 _bfd_mn10300_elf_finish_dynamic_symbol
4855 #define elf_backend_finish_dynamic_sections \
4856 _bfd_mn10300_elf_finish_dynamic_sections
4858 #define elf_backend_reloc_type_class \
4859 _bfd_mn10300_elf_reloc_type_class
4861 #define elf_backend_want_got_plt 1
4862 #define elf_backend_plt_readonly 1
4863 #define elf_backend_want_plt_sym 0
4864 #define elf_backend_got_header_size 12
4866 #include "elf32-target.h"