1 /* Matsushita 10300 specific support for 32-bit ELF
2 Copyright (C) 1996-2020 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
25 #include "elf/mn10300.h"
26 #include "libiberty.h"
28 /* The mn10300 linker needs to keep track of the number of relocs that
29 it decides to copy in check_relocs for each symbol. This is so
30 that it can discard PC relative relocs if it doesn't need them when
31 linking with -Bsymbolic. We store the information in a field
32 extending the regular ELF linker hash table. */
34 struct elf32_mn10300_link_hash_entry
36 /* The basic elf link hash table entry. */
37 struct elf_link_hash_entry root
;
39 /* For function symbols, the number of times this function is
40 called directly (ie by name). */
41 unsigned int direct_calls
;
43 /* For function symbols, the size of this function's stack
44 (if <= 255 bytes). We stuff this into "call" instructions
45 to this target when it's valid and profitable to do so.
47 This does not include stack allocated by movm! */
48 unsigned char stack_size
;
50 /* For function symbols, arguments (if any) for movm instruction
51 in the prologue. We stuff this value into "call" instructions
52 to the target when it's valid and profitable to do so. */
53 unsigned char movm_args
;
55 /* For function symbols, the amount of stack space that would be allocated
56 by the movm instruction. This is redundant with movm_args, but we
57 add it to the hash table to avoid computing it over and over. */
58 unsigned char movm_stack_size
;
60 /* When set, convert all "call" instructions to this target into "calls"
62 #define MN10300_CONVERT_CALL_TO_CALLS 0x1
64 /* Used to mark functions which have had redundant parts of their
66 #define MN10300_DELETED_PROLOGUE_BYTES 0x2
69 /* Calculated value. */
77 /* Used to distinguish GOT entries for TLS types from normal GOT entries. */
78 unsigned char tls_type
;
81 /* We derive a hash table from the main elf linker hash table so
82 we can store state variables and a secondary hash table without
83 resorting to global variables. */
84 struct elf32_mn10300_link_hash_table
86 /* The main hash table. */
87 struct elf_link_hash_table root
;
89 /* A hash table for static functions. We could derive a new hash table
90 instead of using the full elf32_mn10300_link_hash_table if we wanted
91 to save some memory. */
92 struct elf32_mn10300_link_hash_table
*static_hash_table
;
94 /* Random linker state flags. */
95 #define MN10300_HASH_ENTRIES_INITIALIZED 0x1
99 bfd_signed_vma refcount
;
106 #define elf_mn10300_hash_entry(ent) ((struct elf32_mn10300_link_hash_entry *)(ent))
108 struct elf_mn10300_obj_tdata
110 struct elf_obj_tdata root
;
112 /* tls_type for each local got entry. */
113 char * local_got_tls_type
;
116 #define elf_mn10300_tdata(abfd) \
117 ((struct elf_mn10300_obj_tdata *) (abfd)->tdata.any)
119 #define elf_mn10300_local_got_tls_type(abfd) \
120 (elf_mn10300_tdata (abfd)->local_got_tls_type)
123 #define streq(a, b) (strcmp ((a),(b)) == 0)
126 /* For MN10300 linker hash table. */
128 /* Get the MN10300 ELF linker hash table from a link_info structure. */
130 #define elf32_mn10300_hash_table(p) \
131 ((is_elf_hash_table ((p)->hash) \
132 && elf_hash_table_id (elf_hash_table (p)) == MN10300_ELF_DATA) \
133 ? (struct elf32_mn10300_link_hash_table *) (p)->hash : NULL)
135 #define elf32_mn10300_link_hash_traverse(table, func, info) \
136 (elf_link_hash_traverse \
138 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
141 static reloc_howto_type elf_mn10300_howto_table
[] =
143 /* Dummy relocation. Does nothing. */
144 HOWTO (R_MN10300_NONE
,
150 complain_overflow_dont
,
151 bfd_elf_generic_reloc
,
157 /* Standard 32 bit reloc. */
164 complain_overflow_bitfield
,
165 bfd_elf_generic_reloc
,
171 /* Standard 16 bit reloc. */
178 complain_overflow_bitfield
,
179 bfd_elf_generic_reloc
,
185 /* Standard 8 bit reloc. */
192 complain_overflow_bitfield
,
193 bfd_elf_generic_reloc
,
199 /* Standard 32bit pc-relative reloc. */
200 HOWTO (R_MN10300_PCREL32
,
206 complain_overflow_bitfield
,
207 bfd_elf_generic_reloc
,
213 /* Standard 16bit pc-relative reloc. */
214 HOWTO (R_MN10300_PCREL16
,
220 complain_overflow_bitfield
,
221 bfd_elf_generic_reloc
,
227 /* Standard 8 pc-relative reloc. */
228 HOWTO (R_MN10300_PCREL8
,
234 complain_overflow_bitfield
,
235 bfd_elf_generic_reloc
,
242 /* GNU extension to record C++ vtable hierarchy. */
243 HOWTO (R_MN10300_GNU_VTINHERIT
, /* type */
245 0, /* size (0 = byte, 1 = short, 2 = long) */
247 FALSE
, /* pc_relative */
249 complain_overflow_dont
, /* complain_on_overflow */
250 NULL
, /* special_function */
251 "R_MN10300_GNU_VTINHERIT", /* name */
252 FALSE
, /* partial_inplace */
255 FALSE
), /* pcrel_offset */
257 /* GNU extension to record C++ vtable member usage */
258 HOWTO (R_MN10300_GNU_VTENTRY
, /* type */
260 0, /* size (0 = byte, 1 = short, 2 = long) */
262 FALSE
, /* pc_relative */
264 complain_overflow_dont
, /* complain_on_overflow */
265 NULL
, /* special_function */
266 "R_MN10300_GNU_VTENTRY", /* name */
267 FALSE
, /* partial_inplace */
270 FALSE
), /* pcrel_offset */
272 /* Standard 24 bit reloc. */
279 complain_overflow_bitfield
,
280 bfd_elf_generic_reloc
,
286 HOWTO (R_MN10300_GOTPC32
, /* type */
288 2, /* size (0 = byte, 1 = short, 2 = long) */
290 TRUE
, /* pc_relative */
292 complain_overflow_bitfield
, /* complain_on_overflow */
293 bfd_elf_generic_reloc
, /* */
294 "R_MN10300_GOTPC32", /* name */
295 FALSE
, /* partial_inplace */
296 0xffffffff, /* src_mask */
297 0xffffffff, /* dst_mask */
298 TRUE
), /* pcrel_offset */
300 HOWTO (R_MN10300_GOTPC16
, /* type */
302 1, /* size (0 = byte, 1 = short, 2 = long) */
304 TRUE
, /* pc_relative */
306 complain_overflow_bitfield
, /* complain_on_overflow */
307 bfd_elf_generic_reloc
, /* */
308 "R_MN10300_GOTPC16", /* name */
309 FALSE
, /* partial_inplace */
310 0xffff, /* src_mask */
311 0xffff, /* dst_mask */
312 TRUE
), /* pcrel_offset */
314 HOWTO (R_MN10300_GOTOFF32
, /* type */
316 2, /* size (0 = byte, 1 = short, 2 = long) */
318 FALSE
, /* pc_relative */
320 complain_overflow_bitfield
, /* complain_on_overflow */
321 bfd_elf_generic_reloc
, /* */
322 "R_MN10300_GOTOFF32", /* name */
323 FALSE
, /* partial_inplace */
324 0xffffffff, /* src_mask */
325 0xffffffff, /* dst_mask */
326 FALSE
), /* pcrel_offset */
328 HOWTO (R_MN10300_GOTOFF24
, /* type */
330 2, /* size (0 = byte, 1 = short, 2 = long) */
332 FALSE
, /* pc_relative */
334 complain_overflow_bitfield
, /* complain_on_overflow */
335 bfd_elf_generic_reloc
, /* */
336 "R_MN10300_GOTOFF24", /* name */
337 FALSE
, /* partial_inplace */
338 0xffffff, /* src_mask */
339 0xffffff, /* dst_mask */
340 FALSE
), /* pcrel_offset */
342 HOWTO (R_MN10300_GOTOFF16
, /* type */
344 1, /* size (0 = byte, 1 = short, 2 = long) */
346 FALSE
, /* pc_relative */
348 complain_overflow_bitfield
, /* complain_on_overflow */
349 bfd_elf_generic_reloc
, /* */
350 "R_MN10300_GOTOFF16", /* name */
351 FALSE
, /* partial_inplace */
352 0xffff, /* src_mask */
353 0xffff, /* dst_mask */
354 FALSE
), /* pcrel_offset */
356 HOWTO (R_MN10300_PLT32
, /* type */
358 2, /* size (0 = byte, 1 = short, 2 = long) */
360 TRUE
, /* pc_relative */
362 complain_overflow_bitfield
, /* complain_on_overflow */
363 bfd_elf_generic_reloc
, /* */
364 "R_MN10300_PLT32", /* name */
365 FALSE
, /* partial_inplace */
366 0xffffffff, /* src_mask */
367 0xffffffff, /* dst_mask */
368 TRUE
), /* pcrel_offset */
370 HOWTO (R_MN10300_PLT16
, /* type */
372 1, /* size (0 = byte, 1 = short, 2 = long) */
374 TRUE
, /* pc_relative */
376 complain_overflow_bitfield
, /* complain_on_overflow */
377 bfd_elf_generic_reloc
, /* */
378 "R_MN10300_PLT16", /* name */
379 FALSE
, /* partial_inplace */
380 0xffff, /* src_mask */
381 0xffff, /* dst_mask */
382 TRUE
), /* pcrel_offset */
384 HOWTO (R_MN10300_GOT32
, /* type */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
388 FALSE
, /* pc_relative */
390 complain_overflow_bitfield
, /* complain_on_overflow */
391 bfd_elf_generic_reloc
, /* */
392 "R_MN10300_GOT32", /* name */
393 FALSE
, /* partial_inplace */
394 0xffffffff, /* src_mask */
395 0xffffffff, /* dst_mask */
396 FALSE
), /* pcrel_offset */
398 HOWTO (R_MN10300_GOT24
, /* type */
400 2, /* size (0 = byte, 1 = short, 2 = long) */
402 FALSE
, /* pc_relative */
404 complain_overflow_bitfield
, /* complain_on_overflow */
405 bfd_elf_generic_reloc
, /* */
406 "R_MN10300_GOT24", /* name */
407 FALSE
, /* partial_inplace */
408 0xffffffff, /* src_mask */
409 0xffffffff, /* dst_mask */
410 FALSE
), /* pcrel_offset */
412 HOWTO (R_MN10300_GOT16
, /* type */
414 1, /* size (0 = byte, 1 = short, 2 = long) */
416 FALSE
, /* pc_relative */
418 complain_overflow_bitfield
, /* complain_on_overflow */
419 bfd_elf_generic_reloc
, /* */
420 "R_MN10300_GOT16", /* name */
421 FALSE
, /* partial_inplace */
422 0xffffffff, /* src_mask */
423 0xffffffff, /* dst_mask */
424 FALSE
), /* pcrel_offset */
426 HOWTO (R_MN10300_COPY
, /* type */
428 2, /* size (0 = byte, 1 = short, 2 = long) */
430 FALSE
, /* pc_relative */
432 complain_overflow_bitfield
, /* complain_on_overflow */
433 bfd_elf_generic_reloc
, /* */
434 "R_MN10300_COPY", /* name */
435 FALSE
, /* partial_inplace */
436 0xffffffff, /* src_mask */
437 0xffffffff, /* dst_mask */
438 FALSE
), /* pcrel_offset */
440 HOWTO (R_MN10300_GLOB_DAT
, /* type */
442 2, /* size (0 = byte, 1 = short, 2 = long) */
444 FALSE
, /* pc_relative */
446 complain_overflow_bitfield
, /* complain_on_overflow */
447 bfd_elf_generic_reloc
, /* */
448 "R_MN10300_GLOB_DAT", /* name */
449 FALSE
, /* partial_inplace */
450 0xffffffff, /* src_mask */
451 0xffffffff, /* dst_mask */
452 FALSE
), /* pcrel_offset */
454 HOWTO (R_MN10300_JMP_SLOT
, /* type */
456 2, /* size (0 = byte, 1 = short, 2 = long) */
458 FALSE
, /* pc_relative */
460 complain_overflow_bitfield
, /* complain_on_overflow */
461 bfd_elf_generic_reloc
, /* */
462 "R_MN10300_JMP_SLOT", /* name */
463 FALSE
, /* partial_inplace */
464 0xffffffff, /* src_mask */
465 0xffffffff, /* dst_mask */
466 FALSE
), /* pcrel_offset */
468 HOWTO (R_MN10300_RELATIVE
, /* type */
470 2, /* size (0 = byte, 1 = short, 2 = long) */
472 FALSE
, /* pc_relative */
474 complain_overflow_bitfield
, /* complain_on_overflow */
475 bfd_elf_generic_reloc
, /* */
476 "R_MN10300_RELATIVE", /* name */
477 FALSE
, /* partial_inplace */
478 0xffffffff, /* src_mask */
479 0xffffffff, /* dst_mask */
480 FALSE
), /* pcrel_offset */
482 HOWTO (R_MN10300_TLS_GD
, /* type */
484 2, /* size (0 = byte, 1 = short, 2 = long) */
486 FALSE
, /* pc_relative */
488 complain_overflow_bitfield
, /* complain_on_overflow */
489 bfd_elf_generic_reloc
, /* */
490 "R_MN10300_TLS_GD", /* name */
491 FALSE
, /* partial_inplace */
492 0xffffffff, /* src_mask */
493 0xffffffff, /* dst_mask */
494 FALSE
), /* pcrel_offset */
496 HOWTO (R_MN10300_TLS_LD
, /* type */
498 2, /* size (0 = byte, 1 = short, 2 = long) */
500 FALSE
, /* pc_relative */
502 complain_overflow_bitfield
, /* complain_on_overflow */
503 bfd_elf_generic_reloc
, /* */
504 "R_MN10300_TLS_LD", /* name */
505 FALSE
, /* partial_inplace */
506 0xffffffff, /* src_mask */
507 0xffffffff, /* dst_mask */
508 FALSE
), /* pcrel_offset */
510 HOWTO (R_MN10300_TLS_LDO
, /* type */
512 2, /* size (0 = byte, 1 = short, 2 = long) */
514 FALSE
, /* pc_relative */
516 complain_overflow_bitfield
, /* complain_on_overflow */
517 bfd_elf_generic_reloc
, /* */
518 "R_MN10300_TLS_LDO", /* name */
519 FALSE
, /* partial_inplace */
520 0xffffffff, /* src_mask */
521 0xffffffff, /* dst_mask */
522 FALSE
), /* pcrel_offset */
524 HOWTO (R_MN10300_TLS_GOTIE
, /* type */
526 2, /* size (0 = byte, 1 = short, 2 = long) */
528 FALSE
, /* pc_relative */
530 complain_overflow_bitfield
, /* complain_on_overflow */
531 bfd_elf_generic_reloc
, /* */
532 "R_MN10300_TLS_GOTIE", /* name */
533 FALSE
, /* partial_inplace */
534 0xffffffff, /* src_mask */
535 0xffffffff, /* dst_mask */
536 FALSE
), /* pcrel_offset */
538 HOWTO (R_MN10300_TLS_IE
, /* type */
540 2, /* size (0 = byte, 1 = short, 2 = long) */
542 FALSE
, /* pc_relative */
544 complain_overflow_bitfield
, /* complain_on_overflow */
545 bfd_elf_generic_reloc
, /* */
546 "R_MN10300_TLS_IE", /* name */
547 FALSE
, /* partial_inplace */
548 0xffffffff, /* src_mask */
549 0xffffffff, /* dst_mask */
550 FALSE
), /* pcrel_offset */
552 HOWTO (R_MN10300_TLS_LE
, /* type */
554 2, /* size (0 = byte, 1 = short, 2 = long) */
556 FALSE
, /* pc_relative */
558 complain_overflow_bitfield
, /* complain_on_overflow */
559 bfd_elf_generic_reloc
, /* */
560 "R_MN10300_TLS_LE", /* name */
561 FALSE
, /* partial_inplace */
562 0xffffffff, /* src_mask */
563 0xffffffff, /* dst_mask */
564 FALSE
), /* pcrel_offset */
566 HOWTO (R_MN10300_TLS_DTPMOD
, /* type */
568 2, /* size (0 = byte, 1 = short, 2 = long) */
570 FALSE
, /* pc_relative */
572 complain_overflow_bitfield
, /* complain_on_overflow */
573 bfd_elf_generic_reloc
, /* */
574 "R_MN10300_TLS_DTPMOD", /* name */
575 FALSE
, /* partial_inplace */
576 0xffffffff, /* src_mask */
577 0xffffffff, /* dst_mask */
578 FALSE
), /* pcrel_offset */
580 HOWTO (R_MN10300_TLS_DTPOFF
, /* type */
582 2, /* size (0 = byte, 1 = short, 2 = long) */
584 FALSE
, /* pc_relative */
586 complain_overflow_bitfield
, /* complain_on_overflow */
587 bfd_elf_generic_reloc
, /* */
588 "R_MN10300_TLS_DTPOFF", /* name */
589 FALSE
, /* partial_inplace */
590 0xffffffff, /* src_mask */
591 0xffffffff, /* dst_mask */
592 FALSE
), /* pcrel_offset */
594 HOWTO (R_MN10300_TLS_TPOFF
, /* type */
596 2, /* size (0 = byte, 1 = short, 2 = long) */
598 FALSE
, /* pc_relative */
600 complain_overflow_bitfield
, /* complain_on_overflow */
601 bfd_elf_generic_reloc
, /* */
602 "R_MN10300_TLS_TPOFF", /* name */
603 FALSE
, /* partial_inplace */
604 0xffffffff, /* src_mask */
605 0xffffffff, /* dst_mask */
606 FALSE
), /* pcrel_offset */
608 HOWTO (R_MN10300_SYM_DIFF
, /* type */
610 2, /* size (0 = byte, 1 = short, 2 = long) */
612 FALSE
, /* pc_relative */
614 complain_overflow_dont
,/* complain_on_overflow */
615 NULL
, /* special handler. */
616 "R_MN10300_SYM_DIFF", /* name */
617 FALSE
, /* partial_inplace */
618 0xffffffff, /* src_mask */
619 0xffffffff, /* dst_mask */
620 FALSE
), /* pcrel_offset */
622 HOWTO (R_MN10300_ALIGN
, /* type */
624 0, /* size (0 = byte, 1 = short, 2 = long) */
626 FALSE
, /* pc_relative */
628 complain_overflow_dont
,/* complain_on_overflow */
629 NULL
, /* special handler. */
630 "R_MN10300_ALIGN", /* name */
631 FALSE
, /* partial_inplace */
634 FALSE
) /* pcrel_offset */
637 struct mn10300_reloc_map
639 bfd_reloc_code_real_type bfd_reloc_val
;
640 unsigned char elf_reloc_val
;
643 static const struct mn10300_reloc_map mn10300_reloc_map
[] =
645 { BFD_RELOC_NONE
, R_MN10300_NONE
, },
646 { BFD_RELOC_32
, R_MN10300_32
, },
647 { BFD_RELOC_16
, R_MN10300_16
, },
648 { BFD_RELOC_8
, R_MN10300_8
, },
649 { BFD_RELOC_32_PCREL
, R_MN10300_PCREL32
, },
650 { BFD_RELOC_16_PCREL
, R_MN10300_PCREL16
, },
651 { BFD_RELOC_8_PCREL
, R_MN10300_PCREL8
, },
652 { BFD_RELOC_24
, R_MN10300_24
, },
653 { BFD_RELOC_VTABLE_INHERIT
, R_MN10300_GNU_VTINHERIT
},
654 { BFD_RELOC_VTABLE_ENTRY
, R_MN10300_GNU_VTENTRY
},
655 { BFD_RELOC_32_GOT_PCREL
, R_MN10300_GOTPC32
},
656 { BFD_RELOC_16_GOT_PCREL
, R_MN10300_GOTPC16
},
657 { BFD_RELOC_32_GOTOFF
, R_MN10300_GOTOFF32
},
658 { BFD_RELOC_MN10300_GOTOFF24
, R_MN10300_GOTOFF24
},
659 { BFD_RELOC_16_GOTOFF
, R_MN10300_GOTOFF16
},
660 { BFD_RELOC_32_PLT_PCREL
, R_MN10300_PLT32
},
661 { BFD_RELOC_16_PLT_PCREL
, R_MN10300_PLT16
},
662 { BFD_RELOC_MN10300_GOT32
, R_MN10300_GOT32
},
663 { BFD_RELOC_MN10300_GOT24
, R_MN10300_GOT24
},
664 { BFD_RELOC_MN10300_GOT16
, R_MN10300_GOT16
},
665 { BFD_RELOC_MN10300_COPY
, R_MN10300_COPY
},
666 { BFD_RELOC_MN10300_GLOB_DAT
, R_MN10300_GLOB_DAT
},
667 { BFD_RELOC_MN10300_JMP_SLOT
, R_MN10300_JMP_SLOT
},
668 { BFD_RELOC_MN10300_RELATIVE
, R_MN10300_RELATIVE
},
669 { BFD_RELOC_MN10300_TLS_GD
, R_MN10300_TLS_GD
},
670 { BFD_RELOC_MN10300_TLS_LD
, R_MN10300_TLS_LD
},
671 { BFD_RELOC_MN10300_TLS_LDO
, R_MN10300_TLS_LDO
},
672 { BFD_RELOC_MN10300_TLS_GOTIE
, R_MN10300_TLS_GOTIE
},
673 { BFD_RELOC_MN10300_TLS_IE
, R_MN10300_TLS_IE
},
674 { BFD_RELOC_MN10300_TLS_LE
, R_MN10300_TLS_LE
},
675 { BFD_RELOC_MN10300_TLS_DTPMOD
, R_MN10300_TLS_DTPMOD
},
676 { BFD_RELOC_MN10300_TLS_DTPOFF
, R_MN10300_TLS_DTPOFF
},
677 { BFD_RELOC_MN10300_TLS_TPOFF
, R_MN10300_TLS_TPOFF
},
678 { BFD_RELOC_MN10300_SYM_DIFF
, R_MN10300_SYM_DIFF
},
679 { BFD_RELOC_MN10300_ALIGN
, R_MN10300_ALIGN
}
682 /* Create the GOT section. */
685 _bfd_mn10300_elf_create_got_section (bfd
* abfd
,
686 struct bfd_link_info
* info
)
691 struct elf_link_hash_entry
* h
;
692 const struct elf_backend_data
* bed
= get_elf_backend_data (abfd
);
693 struct elf_link_hash_table
*htab
;
696 /* This function may be called more than once. */
697 htab
= elf_hash_table (info
);
698 if (htab
->sgot
!= NULL
)
701 switch (bed
->s
->arch_size
)
712 bfd_set_error (bfd_error_bad_value
);
716 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
717 | SEC_LINKER_CREATED
);
720 pltflags
|= SEC_CODE
;
721 if (bed
->plt_not_loaded
)
722 pltflags
&= ~ (SEC_LOAD
| SEC_HAS_CONTENTS
);
723 if (bed
->plt_readonly
)
724 pltflags
|= SEC_READONLY
;
726 s
= bfd_make_section_anyway_with_flags (abfd
, ".plt", pltflags
);
729 || !bfd_set_section_alignment (s
, bed
->plt_alignment
))
732 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
734 if (bed
->want_plt_sym
)
736 h
= _bfd_elf_define_linkage_sym (abfd
, info
, s
,
737 "_PROCEDURE_LINKAGE_TABLE_");
743 s
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
746 || !bfd_set_section_alignment (s
, ptralign
))
749 if (bed
->want_got_plt
)
751 s
= bfd_make_section_anyway_with_flags (abfd
, ".got.plt", flags
);
754 || !bfd_set_section_alignment (s
, ptralign
))
758 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
759 (or .got.plt) section. We don't do this in the linker script
760 because we don't want to define the symbol if we are not creating
761 a global offset table. */
762 h
= _bfd_elf_define_linkage_sym (abfd
, info
, s
, "_GLOBAL_OFFSET_TABLE_");
767 /* The first bit of the global offset table is the header. */
768 s
->size
+= bed
->got_header_size
;
773 static reloc_howto_type
*
774 bfd_elf32_bfd_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
775 bfd_reloc_code_real_type code
)
779 for (i
= ARRAY_SIZE (mn10300_reloc_map
); i
--;)
780 if (mn10300_reloc_map
[i
].bfd_reloc_val
== code
)
781 return &elf_mn10300_howto_table
[mn10300_reloc_map
[i
].elf_reloc_val
];
786 static reloc_howto_type
*
787 bfd_elf32_bfd_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
792 for (i
= ARRAY_SIZE (elf_mn10300_howto_table
); i
--;)
793 if (elf_mn10300_howto_table
[i
].name
!= NULL
794 && strcasecmp (elf_mn10300_howto_table
[i
].name
, r_name
) == 0)
795 return elf_mn10300_howto_table
+ i
;
800 /* Set the howto pointer for an MN10300 ELF reloc. */
803 mn10300_info_to_howto (bfd
*abfd
,
805 Elf_Internal_Rela
*dst
)
809 r_type
= ELF32_R_TYPE (dst
->r_info
);
810 if (r_type
>= R_MN10300_MAX
)
812 /* xgettext:c-format */
813 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
815 bfd_set_error (bfd_error_bad_value
);
818 cache_ptr
->howto
= elf_mn10300_howto_table
+ r_type
;
823 elf_mn10300_tls_transition (struct bfd_link_info
* info
,
825 struct elf_link_hash_entry
* h
,
827 bfd_boolean counting
)
829 bfd_boolean is_local
;
831 if (r_type
== R_MN10300_TLS_GD
833 && elf_mn10300_hash_entry (h
)->tls_type
== GOT_TLS_IE
)
834 return R_MN10300_TLS_GOTIE
;
836 if (bfd_link_pic (info
))
839 if (! (sec
->flags
& SEC_CODE
))
842 if (! counting
&& h
!= NULL
&& ! elf_hash_table (info
)->dynamic_sections_created
)
845 is_local
= SYMBOL_CALLS_LOCAL (info
, h
);
847 /* For the main program, these are the transitions we do. */
850 case R_MN10300_TLS_GD
: return is_local
? R_MN10300_TLS_LE
: R_MN10300_TLS_GOTIE
;
851 case R_MN10300_TLS_LD
: return R_MN10300_NONE
;
852 case R_MN10300_TLS_LDO
: return R_MN10300_TLS_LE
;
853 case R_MN10300_TLS_IE
:
854 case R_MN10300_TLS_GOTIE
: return is_local
? R_MN10300_TLS_LE
: r_type
;
860 /* Return the relocation value for @tpoff relocation
861 if STT_TLS virtual address is ADDRESS. */
864 dtpoff (struct bfd_link_info
* info
, bfd_vma address
)
866 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
868 /* If tls_sec is NULL, we should have signalled an error already. */
869 if (htab
->tls_sec
== NULL
)
871 return address
- htab
->tls_sec
->vma
;
874 /* Return the relocation value for @tpoff relocation
875 if STT_TLS virtual address is ADDRESS. */
878 tpoff (struct bfd_link_info
* info
, bfd_vma address
)
880 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
882 /* If tls_sec is NULL, we should have signalled an error already. */
883 if (htab
->tls_sec
== NULL
)
885 return address
- (htab
->tls_size
+ htab
->tls_sec
->vma
);
888 /* Returns nonzero if there's a R_MN10300_PLT32 reloc that we now need
889 to skip, after this one. The actual value is the offset between
890 this reloc and the PLT reloc. */
893 mn10300_do_tls_transition (bfd
* input_bfd
,
895 unsigned int tls_r_type
,
899 bfd_byte
*op
= contents
+ offset
;
902 #define TLS_PAIR(r1,r2) ((r1) * R_MN10300_MAX + (r2))
904 /* This is common to all GD/LD transitions, so break it out. */
905 if (r_type
== R_MN10300_TLS_GD
906 || r_type
== R_MN10300_TLS_LD
)
910 BFD_ASSERT (bfd_get_8 (input_bfd
, op
) == 0xFC);
911 BFD_ASSERT (bfd_get_8 (input_bfd
, op
+ 1) == 0xCC);
913 BFD_ASSERT (bfd_get_8 (input_bfd
, op
+ 6) == 0xF1);
914 gotreg
= (bfd_get_8 (input_bfd
, op
+ 7) & 0x0c) >> 2;
916 BFD_ASSERT (bfd_get_8 (input_bfd
, op
+ 8) == 0xDD);
919 switch (TLS_PAIR (r_type
, tls_r_type
))
921 case TLS_PAIR (R_MN10300_TLS_GD
, R_MN10300_TLS_GOTIE
):
923 /* Keep track of which register we put GOTptr in. */
924 /* mov (_x@indntpoff,a2),a0. */
925 memcpy (op
, "\xFC\x20\x00\x00\x00\x00", 6);
928 memcpy (op
+6, "\xF9\x78\x28", 3);
929 /* or 0x00000000, d0 - six byte nop. */
930 memcpy (op
+9, "\xFC\xE4\x00\x00\x00\x00", 6);
934 case TLS_PAIR (R_MN10300_TLS_GD
, R_MN10300_TLS_LE
):
936 /* Register is *always* a0. */
937 /* mov _x@tpoff,a0. */
938 memcpy (op
, "\xFC\xDC\x00\x00\x00\x00", 6);
940 memcpy (op
+6, "\xF9\x78\x28", 3);
941 /* or 0x00000000, d0 - six byte nop. */
942 memcpy (op
+9, "\xFC\xE4\x00\x00\x00\x00", 6);
945 case TLS_PAIR (R_MN10300_TLS_LD
, R_MN10300_NONE
):
947 /* Register is *always* a0. */
949 memcpy (op
, "\xF5\x88", 2);
950 /* or 0x00000000, d0 - six byte nop. */
951 memcpy (op
+2, "\xFC\xE4\x00\x00\x00\x00", 6);
952 /* or 0x00000000, e2 - seven byte nop. */
953 memcpy (op
+8, "\xFE\x19\x22\x00\x00\x00\x00", 7);
957 case TLS_PAIR (R_MN10300_TLS_LDO
, R_MN10300_TLS_LE
):
958 /* No changes needed, just the reloc change. */
961 /* These are a little tricky, because we have to detect which
962 opcode is being used (they're different sizes, with the reloc
963 at different offsets within the opcode) and convert each
964 accordingly, copying the operands as needed. The conversions
965 we do are as follows (IE,GOTIE,LE):
967 1111 1100 1010 01Dn [-- abs32 --] MOV (x@indntpoff),Dn
968 1111 1100 0000 DnAm [-- abs32 --] MOV (x@gotntpoff,Am),Dn
969 1111 1100 1100 11Dn [-- abs32 --] MOV x@tpoff,Dn
971 1111 1100 1010 00An [-- abs32 --] MOV (x@indntpoff),An
972 1111 1100 0010 AnAm [-- abs32 --] MOV (x@gotntpoff,Am),An
973 1111 1100 1101 11An [-- abs32 --] MOV x@tpoff,An
975 1111 1110 0000 1110 Rnnn Xxxx [-- abs32 --] MOV (x@indntpoff),Rn
976 1111 1110 0000 1010 Rnnn Rmmm [-- abs32 --] MOV (x@indntpoff,Rm),Rn
977 1111 1110 0000 1000 Rnnn Xxxx [-- abs32 --] MOV x@tpoff,Rn
979 Since the GOT pointer is always $a2, we assume the last
980 normally won't happen, but let's be paranoid and plan for the
981 day that GCC optimizes it somewhow. */
983 case TLS_PAIR (R_MN10300_TLS_IE
, R_MN10300_TLS_LE
):
987 if ((op
[1] & 0xFC) == 0xA4) /* Dn */
989 op
[1] &= 0x03; /* Leaves Dn. */
994 op
[1] &= 0x03; /* Leaves An. */
998 else if (op
[-3] == 0xFE)
1004 case TLS_PAIR (R_MN10300_TLS_GOTIE
, R_MN10300_TLS_LE
):
1008 if ((op
[1] & 0xF0) == 0x00) /* Dn */
1010 op
[1] &= 0x0C; /* Leaves Dn. */
1016 op
[1] &= 0x0C; /* Leaves An. */
1021 else if (op
[-3] == 0xFE)
1029 /* xgettext:c-format */
1030 (_("%pB: unsupported transition from %s to %s"),
1032 elf_mn10300_howto_table
[r_type
].name
,
1033 elf_mn10300_howto_table
[tls_r_type
].name
);
1040 /* Look through the relocs for a section during the first phase.
1041 Since we don't do .gots or .plts, we just need to consider the
1042 virtual table relocs for gc. */
1045 mn10300_elf_check_relocs (bfd
*abfd
,
1046 struct bfd_link_info
*info
,
1048 const Elf_Internal_Rela
*relocs
)
1050 struct elf32_mn10300_link_hash_table
* htab
= elf32_mn10300_hash_table (info
);
1051 bfd_boolean sym_diff_reloc_seen
;
1052 Elf_Internal_Shdr
*symtab_hdr
;
1053 Elf_Internal_Sym
* isymbuf
= NULL
;
1054 struct elf_link_hash_entry
**sym_hashes
;
1055 const Elf_Internal_Rela
*rel
;
1056 const Elf_Internal_Rela
*rel_end
;
1058 bfd_vma
* local_got_offsets
;
1062 bfd_boolean result
= FALSE
;
1068 if (bfd_link_relocatable (info
))
1071 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1072 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
1073 sym_hashes
= elf_sym_hashes (abfd
);
1075 dynobj
= elf_hash_table (info
)->dynobj
;
1076 local_got_offsets
= elf_local_got_offsets (abfd
);
1077 rel_end
= relocs
+ sec
->reloc_count
;
1078 sym_diff_reloc_seen
= FALSE
;
1080 for (rel
= relocs
; rel
< rel_end
; rel
++)
1082 struct elf_link_hash_entry
*h
;
1083 unsigned long r_symndx
;
1084 unsigned int r_type
;
1085 int tls_type
= GOT_NORMAL
;
1087 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1088 if (r_symndx
< symtab_hdr
->sh_info
)
1092 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1093 while (h
->root
.type
== bfd_link_hash_indirect
1094 || h
->root
.type
== bfd_link_hash_warning
)
1095 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1098 r_type
= ELF32_R_TYPE (rel
->r_info
);
1099 r_type
= elf_mn10300_tls_transition (info
, r_type
, h
, sec
, TRUE
);
1101 /* Some relocs require a global offset table. */
1106 case R_MN10300_GOT32
:
1107 case R_MN10300_GOT24
:
1108 case R_MN10300_GOT16
:
1109 case R_MN10300_GOTOFF32
:
1110 case R_MN10300_GOTOFF24
:
1111 case R_MN10300_GOTOFF16
:
1112 case R_MN10300_GOTPC32
:
1113 case R_MN10300_GOTPC16
:
1114 case R_MN10300_TLS_GD
:
1115 case R_MN10300_TLS_LD
:
1116 case R_MN10300_TLS_GOTIE
:
1117 case R_MN10300_TLS_IE
:
1118 elf_hash_table (info
)->dynobj
= dynobj
= abfd
;
1119 if (! _bfd_mn10300_elf_create_got_section (dynobj
, info
))
1130 /* This relocation describes the C++ object vtable hierarchy.
1131 Reconstruct it for later use during GC. */
1132 case R_MN10300_GNU_VTINHERIT
:
1133 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
1137 /* This relocation describes which C++ vtable entries are actually
1138 used. Record for later use during GC. */
1139 case R_MN10300_GNU_VTENTRY
:
1140 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
1144 case R_MN10300_TLS_LD
:
1145 htab
->tls_ldm_got
.refcount
++;
1146 tls_type
= GOT_TLS_LD
;
1148 if (htab
->tls_ldm_got
.got_allocated
)
1152 case R_MN10300_TLS_IE
:
1153 case R_MN10300_TLS_GOTIE
:
1154 if (bfd_link_pic (info
))
1155 info
->flags
|= DF_STATIC_TLS
;
1158 case R_MN10300_TLS_GD
:
1159 case R_MN10300_GOT32
:
1160 case R_MN10300_GOT24
:
1161 case R_MN10300_GOT16
:
1163 /* This symbol requires a global offset table entry. */
1167 case R_MN10300_TLS_IE
:
1168 case R_MN10300_TLS_GOTIE
: tls_type
= GOT_TLS_IE
; break;
1169 case R_MN10300_TLS_GD
: tls_type
= GOT_TLS_GD
; break;
1170 default: tls_type
= GOT_NORMAL
; break;
1173 sgot
= htab
->root
.sgot
;
1174 srelgot
= htab
->root
.srelgot
;
1175 BFD_ASSERT (sgot
!= NULL
&& srelgot
!= NULL
);
1177 if (r_type
== R_MN10300_TLS_LD
)
1179 htab
->tls_ldm_got
.offset
= sgot
->size
;
1180 htab
->tls_ldm_got
.got_allocated
++;
1184 if (elf_mn10300_hash_entry (h
)->tls_type
!= tls_type
1185 && elf_mn10300_hash_entry (h
)->tls_type
!= GOT_UNKNOWN
)
1187 if (tls_type
== GOT_TLS_IE
1188 && elf_mn10300_hash_entry (h
)->tls_type
== GOT_TLS_GD
)
1189 /* No change - this is ok. */;
1190 else if (tls_type
== GOT_TLS_GD
1191 && elf_mn10300_hash_entry (h
)->tls_type
== GOT_TLS_IE
)
1192 /* Transition GD->IE. */
1193 tls_type
= GOT_TLS_IE
;
1196 /* xgettext:c-format */
1197 (_("%pB: %s' accessed both as normal and thread local symbol"),
1198 abfd
, h
? h
->root
.root
.string
: "<local>");
1201 elf_mn10300_hash_entry (h
)->tls_type
= tls_type
;
1203 if (h
->got
.offset
!= (bfd_vma
) -1)
1204 /* We have already allocated space in the .got. */
1207 h
->got
.offset
= sgot
->size
;
1209 if (ELF_ST_VISIBILITY (h
->other
) != STV_INTERNAL
1210 /* Make sure this symbol is output as a dynamic symbol. */
1211 && h
->dynindx
== -1)
1213 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1217 srelgot
->size
+= sizeof (Elf32_External_Rela
);
1218 if (r_type
== R_MN10300_TLS_GD
)
1219 srelgot
->size
+= sizeof (Elf32_External_Rela
);
1223 /* This is a global offset table entry for a local
1225 if (local_got_offsets
== NULL
)
1230 size
= symtab_hdr
->sh_info
* (sizeof (bfd_vma
) + sizeof (char));
1231 local_got_offsets
= bfd_alloc (abfd
, size
);
1233 if (local_got_offsets
== NULL
)
1236 elf_local_got_offsets (abfd
) = local_got_offsets
;
1237 elf_mn10300_local_got_tls_type (abfd
)
1238 = (char *) (local_got_offsets
+ symtab_hdr
->sh_info
);
1240 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
1241 local_got_offsets
[i
] = (bfd_vma
) -1;
1244 if (local_got_offsets
[r_symndx
] != (bfd_vma
) -1)
1245 /* We have already allocated space in the .got. */
1248 local_got_offsets
[r_symndx
] = sgot
->size
;
1250 if (bfd_link_pic (info
))
1252 /* If we are generating a shared object, we need to
1253 output a R_MN10300_RELATIVE reloc so that the dynamic
1254 linker can adjust this GOT entry. */
1255 srelgot
->size
+= sizeof (Elf32_External_Rela
);
1257 if (r_type
== R_MN10300_TLS_GD
)
1258 /* And a R_MN10300_TLS_DTPOFF reloc as well. */
1259 srelgot
->size
+= sizeof (Elf32_External_Rela
);
1262 elf_mn10300_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
1266 if (r_type
== R_MN10300_TLS_GD
1267 || r_type
== R_MN10300_TLS_LD
)
1270 goto need_shared_relocs
;
1272 case R_MN10300_PLT32
:
1273 case R_MN10300_PLT16
:
1274 /* This symbol requires a procedure linkage table entry. We
1275 actually build the entry in adjust_dynamic_symbol,
1276 because this might be a case of linking PIC code which is
1277 never referenced by a dynamic object, in which case we
1278 don't need to generate a procedure linkage table entry
1281 /* If this is a local symbol, we resolve it directly without
1282 creating a procedure linkage table entry. */
1286 if (ELF_ST_VISIBILITY (h
->other
) == STV_INTERNAL
1287 || ELF_ST_VISIBILITY (h
->other
) == STV_HIDDEN
)
1296 case R_MN10300_PCREL32
:
1297 case R_MN10300_PCREL16
:
1298 case R_MN10300_PCREL8
:
1303 case R_MN10300_SYM_DIFF
:
1304 sym_diff_reloc_seen
= TRUE
;
1312 /* If we are creating a shared library, then we
1313 need to copy the reloc into the shared library. */
1314 if (bfd_link_pic (info
)
1315 && (sec
->flags
& SEC_ALLOC
) != 0
1316 /* Do not generate a dynamic reloc for a
1317 reloc associated with a SYM_DIFF operation. */
1318 && ! sym_diff_reloc_seen
)
1320 asection
* sym_section
= NULL
;
1322 /* Find the section containing the
1323 symbol involved in the relocation. */
1326 Elf_Internal_Sym
* isym
;
1328 if (isymbuf
== NULL
)
1329 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
1330 symtab_hdr
->sh_info
, 0,
1334 isym
= isymbuf
+ r_symndx
;
1335 /* All we care about is whether this local symbol is absolute. */
1336 if (isym
->st_shndx
== SHN_ABS
)
1337 sym_section
= bfd_abs_section_ptr
;
1342 if (h
->root
.type
== bfd_link_hash_defined
1343 || h
->root
.type
== bfd_link_hash_defweak
)
1344 sym_section
= h
->root
.u
.def
.section
;
1347 /* If the symbol is absolute then the relocation can
1348 be resolved during linking and there is no need for
1350 if (sym_section
!= bfd_abs_section_ptr
)
1352 /* When creating a shared object, we must copy these
1353 reloc types into the output file. We create a reloc
1354 section in dynobj and make room for this reloc. */
1357 sreloc
= _bfd_elf_make_dynamic_reloc_section
1358 (sec
, dynobj
, 2, abfd
, /*rela?*/ TRUE
);
1363 sreloc
->size
+= sizeof (Elf32_External_Rela
);
1370 if (ELF32_R_TYPE (rel
->r_info
) != R_MN10300_SYM_DIFF
)
1371 sym_diff_reloc_seen
= FALSE
;
1376 if (symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
1382 /* Return the section that should be marked against GC for a given
1386 mn10300_elf_gc_mark_hook (asection
*sec
,
1387 struct bfd_link_info
*info
,
1388 Elf_Internal_Rela
*rel
,
1389 struct elf_link_hash_entry
*h
,
1390 Elf_Internal_Sym
*sym
)
1393 switch (ELF32_R_TYPE (rel
->r_info
))
1395 case R_MN10300_GNU_VTINHERIT
:
1396 case R_MN10300_GNU_VTENTRY
:
1400 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
1403 /* Perform a relocation as part of a final link. */
1405 static bfd_reloc_status_type
1406 mn10300_elf_final_link_relocate (reloc_howto_type
*howto
,
1408 bfd
*output_bfd ATTRIBUTE_UNUSED
,
1409 asection
*input_section
,
1414 struct elf_link_hash_entry
* h
,
1415 unsigned long symndx
,
1416 struct bfd_link_info
*info
,
1417 asection
*sym_sec ATTRIBUTE_UNUSED
,
1418 int is_local ATTRIBUTE_UNUSED
)
1420 struct elf32_mn10300_link_hash_table
* htab
= elf32_mn10300_hash_table (info
);
1421 static asection
* sym_diff_section
;
1422 static bfd_vma sym_diff_value
;
1423 bfd_boolean is_sym_diff_reloc
;
1424 unsigned long r_type
= howto
->type
;
1425 bfd_byte
* hit_data
= contents
+ offset
;
1431 dynobj
= elf_hash_table (info
)->dynobj
;
1441 case R_MN10300_PCREL8
:
1442 case R_MN10300_PCREL16
:
1443 case R_MN10300_PCREL32
:
1444 case R_MN10300_GOTOFF32
:
1445 case R_MN10300_GOTOFF24
:
1446 case R_MN10300_GOTOFF16
:
1447 if (bfd_link_pic (info
)
1448 && (input_section
->flags
& SEC_ALLOC
) != 0
1450 && ! SYMBOL_REFERENCES_LOCAL (info
, h
))
1451 return bfd_reloc_dangerous
;
1453 case R_MN10300_GOT32
:
1455 Taking the address of a protected function in a shared library
1456 is illegal. Issue an error message here. */
1457 if (bfd_link_pic (info
)
1458 && (input_section
->flags
& SEC_ALLOC
) != 0
1460 && ELF_ST_VISIBILITY (h
->other
) == STV_PROTECTED
1461 && (h
->type
== STT_FUNC
|| h
->type
== STT_GNU_IFUNC
)
1462 && ! SYMBOL_REFERENCES_LOCAL (info
, h
))
1463 return bfd_reloc_dangerous
;
1466 is_sym_diff_reloc
= FALSE
;
1467 if (sym_diff_section
!= NULL
)
1469 BFD_ASSERT (sym_diff_section
== input_section
);
1477 value
-= sym_diff_value
;
1478 /* If we are computing a 32-bit value for the location lists
1479 and the result is 0 then we add one to the value. A zero
1480 value can result because of linker relaxation deleteing
1481 prologue instructions and using a value of 1 (for the begin
1482 and end offsets in the location list entry) results in a
1483 nul entry which does not prevent the following entries from
1485 if (r_type
== R_MN10300_32
1487 && strcmp (input_section
->name
, ".debug_loc") == 0)
1489 sym_diff_section
= NULL
;
1490 is_sym_diff_reloc
= TRUE
;
1494 sym_diff_section
= NULL
;
1501 case R_MN10300_SYM_DIFF
:
1502 BFD_ASSERT (addend
== 0);
1503 /* Cache the input section and value.
1504 The offset is unreliable, since relaxation may
1505 have reduced the following reloc's offset. */
1506 sym_diff_section
= input_section
;
1507 sym_diff_value
= value
;
1508 return bfd_reloc_ok
;
1510 case R_MN10300_ALIGN
:
1511 case R_MN10300_NONE
:
1512 return bfd_reloc_ok
;
1515 if (bfd_link_pic (info
)
1516 /* Do not generate relocs when an R_MN10300_32 has been used
1517 with an R_MN10300_SYM_DIFF to compute a difference of two
1519 && !is_sym_diff_reloc
1520 /* Also, do not generate a reloc when the symbol associated
1521 with the R_MN10300_32 reloc is absolute - there is no
1522 need for a run time computation in this case. */
1523 && sym_sec
!= bfd_abs_section_ptr
1524 /* If the section is not going to be allocated at load time
1525 then there is no need to generate relocs for it. */
1526 && (input_section
->flags
& SEC_ALLOC
) != 0)
1528 Elf_Internal_Rela outrel
;
1529 bfd_boolean skip
, relocate
;
1531 /* When generating a shared object, these relocations are
1532 copied into the output file to be resolved at run
1536 sreloc
= _bfd_elf_get_dynamic_reloc_section
1537 (input_bfd
, input_section
, /*rela?*/ TRUE
);
1544 outrel
.r_offset
= _bfd_elf_section_offset (input_bfd
, info
,
1545 input_section
, offset
);
1546 if (outrel
.r_offset
== (bfd_vma
) -1)
1549 outrel
.r_offset
+= (input_section
->output_section
->vma
1550 + input_section
->output_offset
);
1554 memset (&outrel
, 0, sizeof outrel
);
1559 /* h->dynindx may be -1 if this symbol was marked to
1562 || SYMBOL_REFERENCES_LOCAL (info
, h
))
1565 outrel
.r_info
= ELF32_R_INFO (0, R_MN10300_RELATIVE
);
1566 outrel
.r_addend
= value
+ addend
;
1570 BFD_ASSERT (h
->dynindx
!= -1);
1572 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_MN10300_32
);
1573 outrel
.r_addend
= value
+ addend
;
1577 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
1578 (bfd_byte
*) (((Elf32_External_Rela
*) sreloc
->contents
)
1579 + sreloc
->reloc_count
));
1580 ++sreloc
->reloc_count
;
1582 /* If this reloc is against an external symbol, we do
1583 not want to fiddle with the addend. Otherwise, we
1584 need to include the symbol value so that it becomes
1585 an addend for the dynamic reloc. */
1587 return bfd_reloc_ok
;
1590 bfd_put_32 (input_bfd
, value
, hit_data
);
1591 return bfd_reloc_ok
;
1596 if ((long) value
> 0x7fffff || (long) value
< -0x800000)
1597 return bfd_reloc_overflow
;
1599 bfd_put_8 (input_bfd
, value
& 0xff, hit_data
);
1600 bfd_put_8 (input_bfd
, (value
>> 8) & 0xff, hit_data
+ 1);
1601 bfd_put_8 (input_bfd
, (value
>> 16) & 0xff, hit_data
+ 2);
1602 return bfd_reloc_ok
;
1607 if ((long) value
> 0x7fff || (long) value
< -0x8000)
1608 return bfd_reloc_overflow
;
1610 bfd_put_16 (input_bfd
, value
, hit_data
);
1611 return bfd_reloc_ok
;
1616 if ((long) value
> 0x7f || (long) value
< -0x80)
1617 return bfd_reloc_overflow
;
1619 bfd_put_8 (input_bfd
, value
, hit_data
);
1620 return bfd_reloc_ok
;
1622 case R_MN10300_PCREL8
:
1623 value
-= (input_section
->output_section
->vma
1624 + input_section
->output_offset
);
1628 if ((long) value
> 0x7f || (long) value
< -0x80)
1629 return bfd_reloc_overflow
;
1631 bfd_put_8 (input_bfd
, value
, hit_data
);
1632 return bfd_reloc_ok
;
1634 case R_MN10300_PCREL16
:
1635 value
-= (input_section
->output_section
->vma
1636 + input_section
->output_offset
);
1640 if ((long) value
> 0x7fff || (long) value
< -0x8000)
1641 return bfd_reloc_overflow
;
1643 bfd_put_16 (input_bfd
, value
, hit_data
);
1644 return bfd_reloc_ok
;
1646 case R_MN10300_PCREL32
:
1647 value
-= (input_section
->output_section
->vma
1648 + input_section
->output_offset
);
1652 bfd_put_32 (input_bfd
, value
, hit_data
);
1653 return bfd_reloc_ok
;
1655 case R_MN10300_GNU_VTINHERIT
:
1656 case R_MN10300_GNU_VTENTRY
:
1657 return bfd_reloc_ok
;
1659 case R_MN10300_GOTPC32
:
1661 return bfd_reloc_dangerous
;
1663 /* Use global offset table as symbol value. */
1664 value
= htab
->root
.sgot
->output_section
->vma
;
1665 value
-= (input_section
->output_section
->vma
1666 + input_section
->output_offset
);
1670 bfd_put_32 (input_bfd
, value
, hit_data
);
1671 return bfd_reloc_ok
;
1673 case R_MN10300_GOTPC16
:
1675 return bfd_reloc_dangerous
;
1677 /* Use global offset table as symbol value. */
1678 value
= htab
->root
.sgot
->output_section
->vma
;
1679 value
-= (input_section
->output_section
->vma
1680 + input_section
->output_offset
);
1684 if ((long) value
> 0x7fff || (long) value
< -0x8000)
1685 return bfd_reloc_overflow
;
1687 bfd_put_16 (input_bfd
, value
, hit_data
);
1688 return bfd_reloc_ok
;
1690 case R_MN10300_GOTOFF32
:
1692 return bfd_reloc_dangerous
;
1694 value
-= htab
->root
.sgot
->output_section
->vma
;
1697 bfd_put_32 (input_bfd
, value
, hit_data
);
1698 return bfd_reloc_ok
;
1700 case R_MN10300_GOTOFF24
:
1702 return bfd_reloc_dangerous
;
1704 value
-= htab
->root
.sgot
->output_section
->vma
;
1707 if ((long) value
> 0x7fffff || (long) value
< -0x800000)
1708 return bfd_reloc_overflow
;
1710 bfd_put_8 (input_bfd
, value
, hit_data
);
1711 bfd_put_8 (input_bfd
, (value
>> 8) & 0xff, hit_data
+ 1);
1712 bfd_put_8 (input_bfd
, (value
>> 16) & 0xff, hit_data
+ 2);
1713 return bfd_reloc_ok
;
1715 case R_MN10300_GOTOFF16
:
1717 return bfd_reloc_dangerous
;
1719 value
-= htab
->root
.sgot
->output_section
->vma
;
1722 if ((long) value
> 0x7fff || (long) value
< -0x8000)
1723 return bfd_reloc_overflow
;
1725 bfd_put_16 (input_bfd
, value
, hit_data
);
1726 return bfd_reloc_ok
;
1728 case R_MN10300_PLT32
:
1730 && ELF_ST_VISIBILITY (h
->other
) != STV_INTERNAL
1731 && ELF_ST_VISIBILITY (h
->other
) != STV_HIDDEN
1732 && h
->plt
.offset
!= (bfd_vma
) -1)
1735 return bfd_reloc_dangerous
;
1737 splt
= htab
->root
.splt
;
1738 value
= (splt
->output_section
->vma
1739 + splt
->output_offset
1740 + h
->plt
.offset
) - value
;
1743 value
-= (input_section
->output_section
->vma
1744 + input_section
->output_offset
);
1748 bfd_put_32 (input_bfd
, value
, hit_data
);
1749 return bfd_reloc_ok
;
1751 case R_MN10300_PLT16
:
1753 && ELF_ST_VISIBILITY (h
->other
) != STV_INTERNAL
1754 && ELF_ST_VISIBILITY (h
->other
) != STV_HIDDEN
1755 && h
->plt
.offset
!= (bfd_vma
) -1)
1758 return bfd_reloc_dangerous
;
1760 splt
= htab
->root
.splt
;
1761 value
= (splt
->output_section
->vma
1762 + splt
->output_offset
1763 + h
->plt
.offset
) - value
;
1766 value
-= (input_section
->output_section
->vma
1767 + input_section
->output_offset
);
1771 if ((long) value
> 0x7fff || (long) value
< -0x8000)
1772 return bfd_reloc_overflow
;
1774 bfd_put_16 (input_bfd
, value
, hit_data
);
1775 return bfd_reloc_ok
;
1777 case R_MN10300_TLS_LDO
:
1778 value
= dtpoff (info
, value
);
1779 bfd_put_32 (input_bfd
, value
+ addend
, hit_data
);
1780 return bfd_reloc_ok
;
1782 case R_MN10300_TLS_LE
:
1783 value
= tpoff (info
, value
);
1784 bfd_put_32 (input_bfd
, value
+ addend
, hit_data
);
1785 return bfd_reloc_ok
;
1787 case R_MN10300_TLS_LD
:
1789 return bfd_reloc_dangerous
;
1791 sgot
= htab
->root
.sgot
;
1792 BFD_ASSERT (sgot
!= NULL
);
1793 value
= htab
->tls_ldm_got
.offset
+ sgot
->output_offset
;
1794 bfd_put_32 (input_bfd
, value
, hit_data
);
1796 if (!htab
->tls_ldm_got
.rel_emitted
)
1798 asection
*srelgot
= htab
->root
.srelgot
;
1799 Elf_Internal_Rela rel
;
1801 BFD_ASSERT (srelgot
!= NULL
);
1802 htab
->tls_ldm_got
.rel_emitted
++;
1803 rel
.r_offset
= (sgot
->output_section
->vma
1804 + sgot
->output_offset
1805 + htab
->tls_ldm_got
.offset
);
1806 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ htab
->tls_ldm_got
.offset
);
1807 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ htab
->tls_ldm_got
.offset
+4);
1808 rel
.r_info
= ELF32_R_INFO (0, R_MN10300_TLS_DTPMOD
);
1810 bfd_elf32_swap_reloca_out (output_bfd
, & rel
,
1811 (bfd_byte
*) ((Elf32_External_Rela
*) srelgot
->contents
1812 + srelgot
->reloc_count
));
1813 ++ srelgot
->reloc_count
;
1816 return bfd_reloc_ok
;
1818 case R_MN10300_TLS_GOTIE
:
1819 value
= tpoff (info
, value
);
1822 case R_MN10300_TLS_GD
:
1823 case R_MN10300_TLS_IE
:
1824 case R_MN10300_GOT32
:
1825 case R_MN10300_GOT24
:
1826 case R_MN10300_GOT16
:
1828 return bfd_reloc_dangerous
;
1830 sgot
= htab
->root
.sgot
;
1831 if (r_type
== R_MN10300_TLS_GD
)
1832 value
= dtpoff (info
, value
);
1838 off
= h
->got
.offset
;
1839 /* Offsets in the GOT are allocated in check_relocs
1840 which is not called for shared libraries... */
1841 if (off
== (bfd_vma
) -1)
1844 if (sgot
->contents
!= NULL
1845 && (! elf_hash_table (info
)->dynamic_sections_created
1846 || SYMBOL_REFERENCES_LOCAL (info
, h
)))
1847 /* This is actually a static link, or it is a
1848 -Bsymbolic link and the symbol is defined
1849 locally, or the symbol was forced to be local
1850 because of a version file. We must initialize
1851 this entry in the global offset table.
1853 When doing a dynamic link, we create a .rela.got
1854 relocation entry to initialize the value. This
1855 is done in the finish_dynamic_symbol routine. */
1856 bfd_put_32 (output_bfd
, value
,
1857 sgot
->contents
+ off
);
1859 value
= sgot
->output_offset
+ off
;
1865 off
= elf_local_got_offsets (input_bfd
)[symndx
];
1868 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ (off
& ~ 1));
1871 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
1873 if (bfd_link_pic (info
))
1875 asection
*srelgot
= htab
->root
.srelgot
;;
1876 Elf_Internal_Rela outrel
;
1878 BFD_ASSERT (srelgot
!= NULL
);
1880 outrel
.r_offset
= (sgot
->output_section
->vma
1881 + sgot
->output_offset
1885 case R_MN10300_TLS_GD
:
1886 outrel
.r_info
= ELF32_R_INFO (0, R_MN10300_TLS_DTPOFF
);
1887 outrel
.r_offset
= (sgot
->output_section
->vma
1888 + sgot
->output_offset
1890 bfd_elf32_swap_reloca_out (output_bfd
, & outrel
,
1891 (bfd_byte
*) (((Elf32_External_Rela
*)
1893 + srelgot
->reloc_count
));
1894 ++ srelgot
->reloc_count
;
1895 outrel
.r_info
= ELF32_R_INFO (0, R_MN10300_TLS_DTPMOD
);
1897 case R_MN10300_TLS_GOTIE
:
1898 case R_MN10300_TLS_IE
:
1899 outrel
.r_info
= ELF32_R_INFO (0, R_MN10300_TLS_TPOFF
);
1902 outrel
.r_info
= ELF32_R_INFO (0, R_MN10300_RELATIVE
);
1906 outrel
.r_addend
= value
;
1907 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
1908 (bfd_byte
*) (((Elf32_External_Rela
*)
1910 + srelgot
->reloc_count
));
1911 ++ srelgot
->reloc_count
;
1912 elf_local_got_offsets (input_bfd
)[symndx
] |= 1;
1915 value
= sgot
->output_offset
+ (off
& ~(bfd_vma
) 1);
1921 if (r_type
== R_MN10300_TLS_IE
)
1923 value
+= sgot
->output_section
->vma
;
1924 bfd_put_32 (input_bfd
, value
, hit_data
);
1925 return bfd_reloc_ok
;
1927 else if (r_type
== R_MN10300_TLS_GOTIE
1928 || r_type
== R_MN10300_TLS_GD
1929 || r_type
== R_MN10300_TLS_LD
)
1931 bfd_put_32 (input_bfd
, value
, hit_data
);
1932 return bfd_reloc_ok
;
1934 else if (r_type
== R_MN10300_GOT32
)
1936 bfd_put_32 (input_bfd
, value
, hit_data
);
1937 return bfd_reloc_ok
;
1939 else if (r_type
== R_MN10300_GOT24
)
1941 if ((long) value
> 0x7fffff || (long) value
< -0x800000)
1942 return bfd_reloc_overflow
;
1944 bfd_put_8 (input_bfd
, value
& 0xff, hit_data
);
1945 bfd_put_8 (input_bfd
, (value
>> 8) & 0xff, hit_data
+ 1);
1946 bfd_put_8 (input_bfd
, (value
>> 16) & 0xff, hit_data
+ 2);
1947 return bfd_reloc_ok
;
1949 else if (r_type
== R_MN10300_GOT16
)
1951 if ((long) value
> 0x7fff || (long) value
< -0x8000)
1952 return bfd_reloc_overflow
;
1954 bfd_put_16 (input_bfd
, value
, hit_data
);
1955 return bfd_reloc_ok
;
1960 return bfd_reloc_notsupported
;
1964 /* Relocate an MN10300 ELF section. */
1967 mn10300_elf_relocate_section (bfd
*output_bfd
,
1968 struct bfd_link_info
*info
,
1970 asection
*input_section
,
1972 Elf_Internal_Rela
*relocs
,
1973 Elf_Internal_Sym
*local_syms
,
1974 asection
**local_sections
)
1976 Elf_Internal_Shdr
*symtab_hdr
;
1977 struct elf_link_hash_entry
**sym_hashes
;
1978 Elf_Internal_Rela
*rel
, *relend
;
1979 Elf_Internal_Rela
* trel
;
1981 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
1982 sym_hashes
= elf_sym_hashes (input_bfd
);
1985 relend
= relocs
+ input_section
->reloc_count
;
1986 for (; rel
< relend
; rel
++)
1989 reloc_howto_type
*howto
;
1990 unsigned long r_symndx
;
1991 Elf_Internal_Sym
*sym
;
1993 struct elf32_mn10300_link_hash_entry
*h
;
1995 bfd_reloc_status_type r
;
1997 bfd_boolean unresolved_reloc
= FALSE
;
1998 bfd_boolean warned
, ignored
;
1999 struct elf_link_hash_entry
* hh
;
2002 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2003 r_type
= ELF32_R_TYPE (rel
->r_info
);
2004 howto
= elf_mn10300_howto_table
+ r_type
;
2006 /* Just skip the vtable gc relocs. */
2007 if (r_type
== R_MN10300_GNU_VTINHERIT
2008 || r_type
== R_MN10300_GNU_VTENTRY
)
2014 if (r_symndx
< symtab_hdr
->sh_info
)
2018 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
2019 r_symndx
, symtab_hdr
, sym_hashes
,
2020 hh
, sec
, relocation
,
2021 unresolved_reloc
, warned
, ignored
);
2023 h
= elf_mn10300_hash_entry (hh
);
2025 tls_r_type
= elf_mn10300_tls_transition (info
, r_type
, hh
, input_section
, 0);
2026 if (tls_r_type
!= r_type
)
2028 bfd_boolean had_plt
;
2030 had_plt
= mn10300_do_tls_transition (input_bfd
, r_type
, tls_r_type
,
2031 contents
, rel
->r_offset
);
2032 r_type
= tls_r_type
;
2033 howto
= elf_mn10300_howto_table
+ r_type
;
2036 for (trel
= rel
+1; trel
< relend
; trel
++)
2037 if ((ELF32_R_TYPE (trel
->r_info
) == R_MN10300_PLT32
2038 || ELF32_R_TYPE (trel
->r_info
) == R_MN10300_PCREL32
)
2039 && rel
->r_offset
+ had_plt
== trel
->r_offset
)
2040 trel
->r_info
= ELF32_R_INFO (0, R_MN10300_NONE
);
2043 if (r_symndx
< symtab_hdr
->sh_info
)
2045 sym
= local_syms
+ r_symndx
;
2046 sec
= local_sections
[r_symndx
];
2047 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2051 if ((h
->root
.root
.type
== bfd_link_hash_defined
2052 || h
->root
.root
.type
== bfd_link_hash_defweak
)
2053 && ( r_type
== R_MN10300_GOTPC32
2054 || r_type
== R_MN10300_GOTPC16
2055 || (( r_type
== R_MN10300_PLT32
2056 || r_type
== R_MN10300_PLT16
)
2057 && ELF_ST_VISIBILITY (h
->root
.other
) != STV_INTERNAL
2058 && ELF_ST_VISIBILITY (h
->root
.other
) != STV_HIDDEN
2059 && h
->root
.plt
.offset
!= (bfd_vma
) -1)
2060 || (( r_type
== R_MN10300_GOT32
2061 || r_type
== R_MN10300_GOT24
2062 || r_type
== R_MN10300_TLS_GD
2063 || r_type
== R_MN10300_TLS_LD
2064 || r_type
== R_MN10300_TLS_GOTIE
2065 || r_type
== R_MN10300_TLS_IE
2066 || r_type
== R_MN10300_GOT16
)
2067 && elf_hash_table (info
)->dynamic_sections_created
2068 && !SYMBOL_REFERENCES_LOCAL (info
, hh
))
2069 || (r_type
== R_MN10300_32
2070 && !SYMBOL_REFERENCES_LOCAL (info
, hh
)
2071 /* _32 relocs in executables force _COPY relocs,
2072 such that the address of the symbol ends up
2074 && (((input_section
->flags
& SEC_ALLOC
) != 0
2075 && !bfd_link_executable (info
))
2076 /* DWARF will emit R_MN10300_32 relocations
2077 in its sections against symbols defined
2078 externally in shared libraries. We can't
2079 do anything with them here. */
2080 || ((input_section
->flags
& SEC_DEBUGGING
) != 0
2081 && h
->root
.def_dynamic
)))))
2082 /* In these cases, we don't need the relocation
2083 value. We check specially because in some
2084 obscure cases sec->output_section will be NULL. */
2087 else if (!bfd_link_relocatable (info
) && unresolved_reloc
2088 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2089 rel
->r_offset
) != (bfd_vma
) -1)
2092 /* xgettext:c-format */
2093 (_("%pB(%pA+%#" PRIx64
"): "
2094 "unresolvable %s relocation against symbol `%s'"),
2097 (uint64_t) rel
->r_offset
,
2099 h
->root
.root
.root
.string
);
2102 if (sec
!= NULL
&& discarded_section (sec
))
2103 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
2104 rel
, 1, relend
, howto
, 0, contents
);
2106 if (bfd_link_relocatable (info
))
2109 r
= mn10300_elf_final_link_relocate (howto
, input_bfd
, output_bfd
,
2111 contents
, rel
->r_offset
,
2112 relocation
, rel
->r_addend
,
2113 (struct elf_link_hash_entry
*) h
,
2115 info
, sec
, h
== NULL
);
2117 if (r
!= bfd_reloc_ok
)
2120 const char *msg
= NULL
;
2123 name
= h
->root
.root
.root
.string
;
2126 name
= (bfd_elf_string_from_elf_section
2127 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
2128 if (name
== NULL
|| *name
== '\0')
2129 name
= bfd_section_name (sec
);
2134 case bfd_reloc_overflow
:
2135 (*info
->callbacks
->reloc_overflow
)
2136 (info
, (h
? &h
->root
.root
: NULL
), name
, howto
->name
,
2137 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
2140 case bfd_reloc_undefined
:
2141 (*info
->callbacks
->undefined_symbol
)
2142 (info
, name
, input_bfd
, input_section
, rel
->r_offset
, TRUE
);
2145 case bfd_reloc_outofrange
:
2146 msg
= _("internal error: out of range error");
2149 case bfd_reloc_notsupported
:
2150 msg
= _("internal error: unsupported relocation error");
2153 case bfd_reloc_dangerous
:
2154 if (r_type
== R_MN10300_PCREL32
)
2155 msg
= _("error: inappropriate relocation type for shared"
2156 " library (did you forget -fpic?)");
2157 else if (r_type
== R_MN10300_GOT32
)
2158 /* xgettext:c-format */
2159 msg
= _("%pB: taking the address of protected function"
2160 " '%s' cannot be done when making a shared library");
2162 msg
= _("internal error: suspicious relocation type used"
2163 " in shared library");
2167 msg
= _("internal error: unknown error");
2171 _bfd_error_handler (msg
, input_bfd
, name
);
2172 bfd_set_error (bfd_error_bad_value
);
2181 /* Finish initializing one hash table entry. */
2184 elf32_mn10300_finish_hash_table_entry (struct bfd_hash_entry
*gen_entry
,
2187 struct elf32_mn10300_link_hash_entry
*entry
;
2188 struct bfd_link_info
*link_info
= (struct bfd_link_info
*) in_args
;
2189 unsigned int byte_count
= 0;
2191 entry
= (struct elf32_mn10300_link_hash_entry
*) gen_entry
;
2193 /* If we already know we want to convert "call" to "calls" for calls
2194 to this symbol, then return now. */
2195 if (entry
->flags
== MN10300_CONVERT_CALL_TO_CALLS
)
2198 /* If there are no named calls to this symbol, or there's nothing we
2199 can move from the function itself into the "call" instruction,
2200 then note that all "call" instructions should be converted into
2201 "calls" instructions and return. If a symbol is available for
2202 dynamic symbol resolution (overridable or overriding), avoid
2203 custom calling conventions. */
2204 if (entry
->direct_calls
== 0
2205 || (entry
->stack_size
== 0 && entry
->movm_args
== 0)
2206 || (elf_hash_table (link_info
)->dynamic_sections_created
2207 && ELF_ST_VISIBILITY (entry
->root
.other
) != STV_INTERNAL
2208 && ELF_ST_VISIBILITY (entry
->root
.other
) != STV_HIDDEN
))
2210 /* Make a note that we should convert "call" instructions to "calls"
2211 instructions for calls to this symbol. */
2212 entry
->flags
|= MN10300_CONVERT_CALL_TO_CALLS
;
2216 /* We may be able to move some instructions from the function itself into
2217 the "call" instruction. Count how many bytes we might be able to
2218 eliminate in the function itself. */
2220 /* A movm instruction is two bytes. */
2221 if (entry
->movm_args
)
2224 /* Count the insn to allocate stack space too. */
2225 if (entry
->stack_size
> 0)
2227 if (entry
->stack_size
<= 128)
2233 /* If using "call" will result in larger code, then turn all
2234 the associated "call" instructions into "calls" instructions. */
2235 if (byte_count
< entry
->direct_calls
)
2236 entry
->flags
|= MN10300_CONVERT_CALL_TO_CALLS
;
2238 /* This routine never fails. */
2242 /* Used to count hash table entries. */
2245 elf32_mn10300_count_hash_table_entries (struct bfd_hash_entry
*gen_entry ATTRIBUTE_UNUSED
,
2248 int *count
= (int *) in_args
;
2254 /* Used to enumerate hash table entries into a linear array. */
2257 elf32_mn10300_list_hash_table_entries (struct bfd_hash_entry
*gen_entry
,
2260 struct bfd_hash_entry
***ptr
= (struct bfd_hash_entry
***) in_args
;
2267 /* Used to sort the array created by the above. */
2270 sort_by_value (const void *va
, const void *vb
)
2272 struct elf32_mn10300_link_hash_entry
*a
2273 = *(struct elf32_mn10300_link_hash_entry
**) va
;
2274 struct elf32_mn10300_link_hash_entry
*b
2275 = *(struct elf32_mn10300_link_hash_entry
**) vb
;
2277 return a
->value
- b
->value
;
2280 /* Compute the stack size and movm arguments for the function
2281 referred to by HASH at address ADDR in section with
2282 contents CONTENTS, store the information in the hash table. */
2285 compute_function_info (bfd
*abfd
,
2286 struct elf32_mn10300_link_hash_entry
*hash
,
2288 unsigned char *contents
)
2290 unsigned char byte1
, byte2
;
2291 /* We only care about a very small subset of the possible prologue
2292 sequences here. Basically we look for:
2294 movm [d2,d3,a2,a3],sp (optional)
2295 add <size>,sp (optional, and only for sizes which fit in an unsigned
2298 If we find anything else, we quit. */
2300 /* Look for movm [regs],sp. */
2301 byte1
= bfd_get_8 (abfd
, contents
+ addr
);
2302 byte2
= bfd_get_8 (abfd
, contents
+ addr
+ 1);
2306 hash
->movm_args
= byte2
;
2308 byte1
= bfd_get_8 (abfd
, contents
+ addr
);
2309 byte2
= bfd_get_8 (abfd
, contents
+ addr
+ 1);
2312 /* Now figure out how much stack space will be allocated by the movm
2313 instruction. We need this kept separate from the function's normal
2315 if (hash
->movm_args
)
2318 if (hash
->movm_args
& 0x80)
2319 hash
->movm_stack_size
+= 4;
2322 if (hash
->movm_args
& 0x40)
2323 hash
->movm_stack_size
+= 4;
2326 if (hash
->movm_args
& 0x20)
2327 hash
->movm_stack_size
+= 4;
2330 if (hash
->movm_args
& 0x10)
2331 hash
->movm_stack_size
+= 4;
2333 /* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */
2334 if (hash
->movm_args
& 0x08)
2335 hash
->movm_stack_size
+= 8 * 4;
2337 if (bfd_get_mach (abfd
) == bfd_mach_am33
2338 || bfd_get_mach (abfd
) == bfd_mach_am33_2
)
2340 /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */
2341 if (hash
->movm_args
& 0x1)
2342 hash
->movm_stack_size
+= 6 * 4;
2344 /* exreg1 space. e4, e5, e6, e7 */
2345 if (hash
->movm_args
& 0x2)
2346 hash
->movm_stack_size
+= 4 * 4;
2348 /* exreg0 space. e2, e3 */
2349 if (hash
->movm_args
& 0x4)
2350 hash
->movm_stack_size
+= 2 * 4;
2354 /* Now look for the two stack adjustment variants. */
2355 if (byte1
== 0xf8 && byte2
== 0xfe)
2357 int temp
= bfd_get_8 (abfd
, contents
+ addr
+ 2);
2358 temp
= ((temp
& 0xff) ^ (~0x7f)) + 0x80;
2360 hash
->stack_size
= -temp
;
2362 else if (byte1
== 0xfa && byte2
== 0xfe)
2364 int temp
= bfd_get_16 (abfd
, contents
+ addr
+ 2);
2365 temp
= ((temp
& 0xffff) ^ (~0x7fff)) + 0x8000;
2369 hash
->stack_size
= temp
;
2372 /* If the total stack to be allocated by the call instruction is more
2373 than 255 bytes, then we can't remove the stack adjustment by using
2374 "call" (we might still be able to remove the "movm" instruction. */
2375 if (hash
->stack_size
+ hash
->movm_stack_size
> 255)
2376 hash
->stack_size
= 0;
2379 /* Delete some bytes from a section while relaxing. */
2382 mn10300_elf_relax_delete_bytes (bfd
*abfd
,
2387 Elf_Internal_Shdr
*symtab_hdr
;
2388 unsigned int sec_shndx
;
2390 Elf_Internal_Rela
*irel
, *irelend
;
2391 Elf_Internal_Rela
*irelalign
;
2393 Elf_Internal_Sym
*isym
, *isymend
;
2394 struct elf_link_hash_entry
**sym_hashes
;
2395 struct elf_link_hash_entry
**end_hashes
;
2396 unsigned int symcount
;
2398 sec_shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
2400 contents
= elf_section_data (sec
)->this_hdr
.contents
;
2405 irel
= elf_section_data (sec
)->relocs
;
2406 irelend
= irel
+ sec
->reloc_count
;
2408 if (sec
->reloc_count
> 0)
2410 /* If there is an align reloc at the end of the section ignore it.
2411 GAS creates these relocs for reasons of its own, and they just
2412 serve to keep the section artifically inflated. */
2413 if (ELF32_R_TYPE ((irelend
- 1)->r_info
) == (int) R_MN10300_ALIGN
)
2416 /* The deletion must stop at the next ALIGN reloc for an alignment
2417 power larger than, or not a multiple of, the number of bytes we
2419 for (; irel
< irelend
; irel
++)
2421 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_ALIGN
2422 && irel
->r_offset
> addr
2423 && irel
->r_offset
< toaddr
)
2425 int alignment
= 1 << irel
->r_addend
;
2427 if (count
< alignment
2428 || alignment
% count
!= 0)
2431 toaddr
= irel
->r_offset
;
2438 /* Actually delete the bytes. */
2439 memmove (contents
+ addr
, contents
+ addr
+ count
,
2440 (size_t) (toaddr
- addr
- count
));
2442 /* Adjust the section's size if we are shrinking it, or else
2443 pad the bytes between the end of the shrunken region and
2444 the start of the next region with NOP codes. */
2445 if (irelalign
== NULL
)
2448 /* Include symbols at the end of the section, but
2449 not at the end of a sub-region of the section. */
2456 #define NOP_OPCODE 0xcb
2458 for (i
= 0; i
< count
; i
++)
2459 bfd_put_8 (abfd
, (bfd_vma
) NOP_OPCODE
, contents
+ toaddr
- count
+ i
);
2462 /* Adjust all the relocs. */
2463 for (irel
= elf_section_data (sec
)->relocs
; irel
< irelend
; irel
++)
2465 /* Get the new reloc address. */
2466 if ((irel
->r_offset
> addr
2467 && irel
->r_offset
< toaddr
)
2468 || (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_ALIGN
2469 && irel
->r_offset
== toaddr
))
2470 irel
->r_offset
-= count
;
2473 /* Adjust the local symbols in the section, reducing their value
2474 by the number of bytes deleted. Note - symbols within the deleted
2475 region are moved to the address of the start of the region, which
2476 actually means that they will address the byte beyond the end of
2477 the region once the deletion has been completed. */
2478 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2479 isym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
2480 for (isymend
= isym
+ symtab_hdr
->sh_info
; isym
< isymend
; isym
++)
2482 if (isym
->st_shndx
== sec_shndx
2483 && isym
->st_value
> addr
2484 && isym
->st_value
< toaddr
)
2486 if (isym
->st_value
< addr
+ count
)
2487 isym
->st_value
= addr
;
2489 isym
->st_value
-= count
;
2491 /* Adjust the function symbol's size as well. */
2492 else if (isym
->st_shndx
== sec_shndx
2493 && ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
2494 && isym
->st_value
+ isym
->st_size
> addr
2495 && isym
->st_value
+ isym
->st_size
< toaddr
)
2496 isym
->st_size
-= count
;
2499 /* Now adjust the global symbols defined in this section. */
2500 symcount
= (symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
)
2501 - symtab_hdr
->sh_info
);
2502 sym_hashes
= elf_sym_hashes (abfd
);
2503 end_hashes
= sym_hashes
+ symcount
;
2504 for (; sym_hashes
< end_hashes
; sym_hashes
++)
2506 struct elf_link_hash_entry
*sym_hash
= *sym_hashes
;
2508 if ((sym_hash
->root
.type
== bfd_link_hash_defined
2509 || sym_hash
->root
.type
== bfd_link_hash_defweak
)
2510 && sym_hash
->root
.u
.def
.section
== sec
2511 && sym_hash
->root
.u
.def
.value
> addr
2512 && sym_hash
->root
.u
.def
.value
< toaddr
)
2514 if (sym_hash
->root
.u
.def
.value
< addr
+ count
)
2515 sym_hash
->root
.u
.def
.value
= addr
;
2517 sym_hash
->root
.u
.def
.value
-= count
;
2519 /* Adjust the function symbol's size as well. */
2520 else if (sym_hash
->root
.type
== bfd_link_hash_defined
2521 && sym_hash
->root
.u
.def
.section
== sec
2522 && sym_hash
->type
== STT_FUNC
2523 && sym_hash
->root
.u
.def
.value
+ sym_hash
->size
> addr
2524 && sym_hash
->root
.u
.def
.value
+ sym_hash
->size
< toaddr
)
2525 sym_hash
->size
-= count
;
2528 /* See if we can move the ALIGN reloc forward.
2529 We have adjusted r_offset for it already. */
2530 if (irelalign
!= NULL
)
2532 bfd_vma alignto
, alignaddr
;
2534 if ((int) irelalign
->r_addend
> 0)
2536 /* This is the old address. */
2537 alignto
= BFD_ALIGN (toaddr
, 1 << irelalign
->r_addend
);
2538 /* This is where the align points to now. */
2539 alignaddr
= BFD_ALIGN (irelalign
->r_offset
,
2540 1 << irelalign
->r_addend
);
2541 if (alignaddr
< alignto
)
2542 /* Tail recursion. */
2543 return mn10300_elf_relax_delete_bytes (abfd
, sec
, alignaddr
,
2544 (int) (alignto
- alignaddr
));
2551 /* Return TRUE if a symbol exists at the given address, else return
2555 mn10300_elf_symbol_address_p (bfd
*abfd
,
2557 Elf_Internal_Sym
*isym
,
2560 Elf_Internal_Shdr
*symtab_hdr
;
2561 unsigned int sec_shndx
;
2562 Elf_Internal_Sym
*isymend
;
2563 struct elf_link_hash_entry
**sym_hashes
;
2564 struct elf_link_hash_entry
**end_hashes
;
2565 unsigned int symcount
;
2567 sec_shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
2569 /* Examine all the symbols. */
2570 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2571 for (isymend
= isym
+ symtab_hdr
->sh_info
; isym
< isymend
; isym
++)
2572 if (isym
->st_shndx
== sec_shndx
2573 && isym
->st_value
== addr
)
2576 symcount
= (symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
)
2577 - symtab_hdr
->sh_info
);
2578 sym_hashes
= elf_sym_hashes (abfd
);
2579 end_hashes
= sym_hashes
+ symcount
;
2580 for (; sym_hashes
< end_hashes
; sym_hashes
++)
2582 struct elf_link_hash_entry
*sym_hash
= *sym_hashes
;
2584 if ((sym_hash
->root
.type
== bfd_link_hash_defined
2585 || sym_hash
->root
.type
== bfd_link_hash_defweak
)
2586 && sym_hash
->root
.u
.def
.section
== sec
2587 && sym_hash
->root
.u
.def
.value
== addr
)
2594 /* This function handles relaxing for the mn10300.
2596 There are quite a few relaxing opportunities available on the mn10300:
2598 * calls:32 -> calls:16 2 bytes
2599 * call:32 -> call:16 2 bytes
2601 * call:32 -> calls:32 1 byte
2602 * call:16 -> calls:16 1 byte
2603 * These are done anytime using "calls" would result
2604 in smaller code, or when necessary to preserve the
2605 meaning of the program.
2609 * In some circumstances we can move instructions
2610 from a function prologue into a "call" instruction.
2611 This is only done if the resulting code is no larger
2612 than the original code.
2614 * jmp:32 -> jmp:16 2 bytes
2615 * jmp:16 -> bra:8 1 byte
2617 * If the previous instruction is a conditional branch
2618 around the jump/bra, we may be able to reverse its condition
2619 and change its target to the jump's target. The jump/bra
2620 can then be deleted. 2 bytes
2622 * mov abs32 -> mov abs16 1 or 2 bytes
2624 * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes
2625 - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes
2627 * Most instructions which accept d32 can relax to d16 1 or 2 bytes
2628 - Most instructions which accept d16 can relax to d8 1 or 2 bytes
2630 We don't handle imm16->imm8 or d16->d8 as they're very rare
2631 and somewhat more difficult to support. */
2634 mn10300_elf_relax_section (bfd
*abfd
,
2636 struct bfd_link_info
*link_info
,
2639 Elf_Internal_Shdr
*symtab_hdr
;
2640 Elf_Internal_Rela
*internal_relocs
= NULL
;
2641 Elf_Internal_Rela
*irel
, *irelend
;
2642 bfd_byte
*contents
= NULL
;
2643 Elf_Internal_Sym
*isymbuf
= NULL
;
2644 struct elf32_mn10300_link_hash_table
*hash_table
;
2645 asection
*section
= sec
;
2646 bfd_vma align_gap_adjustment
;
2648 if (bfd_link_relocatable (link_info
))
2649 (*link_info
->callbacks
->einfo
)
2650 (_("%P%F: --relax and -r may not be used together\n"));
2652 /* Assume nothing changes. */
2655 /* We need a pointer to the mn10300 specific hash table. */
2656 hash_table
= elf32_mn10300_hash_table (link_info
);
2657 if (hash_table
== NULL
)
2660 /* Initialize fields in each hash table entry the first time through. */
2661 if ((hash_table
->flags
& MN10300_HASH_ENTRIES_INITIALIZED
) == 0)
2665 /* Iterate over all the input bfds. */
2666 for (input_bfd
= link_info
->input_bfds
;
2668 input_bfd
= input_bfd
->link
.next
)
2670 /* We're going to need all the symbols for each bfd. */
2671 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
2672 if (symtab_hdr
->sh_info
!= 0)
2674 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
2675 if (isymbuf
== NULL
)
2676 isymbuf
= bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
2677 symtab_hdr
->sh_info
, 0,
2679 if (isymbuf
== NULL
)
2683 /* Iterate over each section in this bfd. */
2684 for (section
= input_bfd
->sections
;
2686 section
= section
->next
)
2688 struct elf32_mn10300_link_hash_entry
*hash
;
2689 asection
*sym_sec
= NULL
;
2690 const char *sym_name
;
2693 /* If there's nothing to do in this section, skip it. */
2694 if (! ((section
->flags
& SEC_RELOC
) != 0
2695 && section
->reloc_count
!= 0))
2697 if ((section
->flags
& SEC_ALLOC
) == 0)
2700 /* Get cached copy of section contents if it exists. */
2701 if (elf_section_data (section
)->this_hdr
.contents
!= NULL
)
2702 contents
= elf_section_data (section
)->this_hdr
.contents
;
2703 else if (section
->size
!= 0)
2705 /* Go get them off disk. */
2706 if (!bfd_malloc_and_get_section (input_bfd
, section
,
2713 /* If there aren't any relocs, then there's nothing to do. */
2714 if ((section
->flags
& SEC_RELOC
) != 0
2715 && section
->reloc_count
!= 0)
2717 /* Get a copy of the native relocations. */
2718 internal_relocs
= _bfd_elf_link_read_relocs (input_bfd
, section
,
2720 link_info
->keep_memory
);
2721 if (internal_relocs
== NULL
)
2724 /* Now examine each relocation. */
2725 irel
= internal_relocs
;
2726 irelend
= irel
+ section
->reloc_count
;
2727 for (; irel
< irelend
; irel
++)
2730 unsigned long r_index
;
2733 r_type
= ELF32_R_TYPE (irel
->r_info
);
2734 r_index
= ELF32_R_SYM (irel
->r_info
);
2736 if (r_type
< 0 || r_type
>= (int) R_MN10300_MAX
)
2739 /* We need the name and hash table entry of the target
2744 if (r_index
< symtab_hdr
->sh_info
)
2746 /* A local symbol. */
2747 Elf_Internal_Sym
*isym
;
2748 struct elf_link_hash_table
*elftab
;
2751 isym
= isymbuf
+ r_index
;
2752 if (isym
->st_shndx
== SHN_UNDEF
)
2753 sym_sec
= bfd_und_section_ptr
;
2754 else if (isym
->st_shndx
== SHN_ABS
)
2755 sym_sec
= bfd_abs_section_ptr
;
2756 else if (isym
->st_shndx
== SHN_COMMON
)
2757 sym_sec
= bfd_com_section_ptr
;
2760 = bfd_section_from_elf_index (input_bfd
,
2764 = bfd_elf_string_from_elf_section (input_bfd
,
2769 /* If it isn't a function, then we don't care
2771 if (ELF_ST_TYPE (isym
->st_info
) != STT_FUNC
)
2774 /* Tack on an ID so we can uniquely identify this
2775 local symbol in the global hash table. */
2776 amt
= strlen (sym_name
) + 10;
2777 new_name
= bfd_malloc (amt
);
2778 if (new_name
== NULL
)
2781 sprintf (new_name
, "%s_%08x", sym_name
, sym_sec
->id
);
2782 sym_name
= new_name
;
2784 elftab
= &hash_table
->static_hash_table
->root
;
2785 hash
= ((struct elf32_mn10300_link_hash_entry
*)
2786 elf_link_hash_lookup (elftab
, sym_name
,
2787 TRUE
, TRUE
, FALSE
));
2792 r_index
-= symtab_hdr
->sh_info
;
2793 hash
= (struct elf32_mn10300_link_hash_entry
*)
2794 elf_sym_hashes (input_bfd
)[r_index
];
2797 sym_name
= hash
->root
.root
.root
.string
;
2798 if ((section
->flags
& SEC_CODE
) != 0)
2800 /* If this is not a "call" instruction, then we
2801 should convert "call" instructions to "calls"
2803 code
= bfd_get_8 (input_bfd
,
2804 contents
+ irel
->r_offset
- 1);
2805 if (code
!= 0xdd && code
!= 0xcd)
2806 hash
->flags
|= MN10300_CONVERT_CALL_TO_CALLS
;
2809 /* If this is a jump/call, then bump the
2810 direct_calls counter. Else force "call" to
2811 "calls" conversions. */
2812 if (r_type
== R_MN10300_PCREL32
2813 || r_type
== R_MN10300_PLT32
2814 || r_type
== R_MN10300_PLT16
2815 || r_type
== R_MN10300_PCREL16
)
2816 hash
->direct_calls
++;
2818 hash
->flags
|= MN10300_CONVERT_CALL_TO_CALLS
;
2822 /* Now look at the actual contents to get the stack size,
2823 and a list of what registers were saved in the prologue
2825 if ((section
->flags
& SEC_CODE
) != 0)
2827 Elf_Internal_Sym
*isym
, *isymend
;
2828 unsigned int sec_shndx
;
2829 struct elf_link_hash_entry
**hashes
;
2830 struct elf_link_hash_entry
**end_hashes
;
2831 unsigned int symcount
;
2833 sec_shndx
= _bfd_elf_section_from_bfd_section (input_bfd
,
2836 symcount
= (symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
)
2837 - symtab_hdr
->sh_info
);
2838 hashes
= elf_sym_hashes (input_bfd
);
2839 end_hashes
= hashes
+ symcount
;
2841 /* Look at each function defined in this section and
2842 update info for that function. */
2843 isymend
= isymbuf
+ symtab_hdr
->sh_info
;
2844 for (isym
= isymbuf
; isym
< isymend
; isym
++)
2846 if (isym
->st_shndx
== sec_shndx
2847 && ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
)
2849 struct elf_link_hash_table
*elftab
;
2851 struct elf_link_hash_entry
**lhashes
= hashes
;
2853 /* Skip a local symbol if it aliases a
2855 for (; lhashes
< end_hashes
; lhashes
++)
2857 hash
= (struct elf32_mn10300_link_hash_entry
*) *lhashes
;
2858 if ((hash
->root
.root
.type
== bfd_link_hash_defined
2859 || hash
->root
.root
.type
== bfd_link_hash_defweak
)
2860 && hash
->root
.root
.u
.def
.section
== section
2861 && hash
->root
.type
== STT_FUNC
2862 && hash
->root
.root
.u
.def
.value
== isym
->st_value
)
2865 if (lhashes
!= end_hashes
)
2868 if (isym
->st_shndx
== SHN_UNDEF
)
2869 sym_sec
= bfd_und_section_ptr
;
2870 else if (isym
->st_shndx
== SHN_ABS
)
2871 sym_sec
= bfd_abs_section_ptr
;
2872 else if (isym
->st_shndx
== SHN_COMMON
)
2873 sym_sec
= bfd_com_section_ptr
;
2876 = bfd_section_from_elf_index (input_bfd
,
2879 sym_name
= (bfd_elf_string_from_elf_section
2880 (input_bfd
, symtab_hdr
->sh_link
,
2883 /* Tack on an ID so we can uniquely identify this
2884 local symbol in the global hash table. */
2885 amt
= strlen (sym_name
) + 10;
2886 new_name
= bfd_malloc (amt
);
2887 if (new_name
== NULL
)
2890 sprintf (new_name
, "%s_%08x", sym_name
, sym_sec
->id
);
2891 sym_name
= new_name
;
2893 elftab
= &hash_table
->static_hash_table
->root
;
2894 hash
= ((struct elf32_mn10300_link_hash_entry
*)
2895 elf_link_hash_lookup (elftab
, sym_name
,
2896 TRUE
, TRUE
, FALSE
));
2898 compute_function_info (input_bfd
, hash
,
2899 isym
->st_value
, contents
);
2900 hash
->value
= isym
->st_value
;
2904 for (; hashes
< end_hashes
; hashes
++)
2906 hash
= (struct elf32_mn10300_link_hash_entry
*) *hashes
;
2907 if ((hash
->root
.root
.type
== bfd_link_hash_defined
2908 || hash
->root
.root
.type
== bfd_link_hash_defweak
)
2909 && hash
->root
.root
.u
.def
.section
== section
2910 && hash
->root
.type
== STT_FUNC
)
2911 compute_function_info (input_bfd
, hash
,
2912 (hash
)->root
.root
.u
.def
.value
,
2917 /* Cache or free any memory we allocated for the relocs. */
2918 if (elf_section_data (section
)->relocs
!= internal_relocs
)
2919 free (internal_relocs
);
2920 internal_relocs
= NULL
;
2922 /* Cache or free any memory we allocated for the contents. */
2923 if (contents
!= NULL
2924 && elf_section_data (section
)->this_hdr
.contents
!= contents
)
2926 if (! link_info
->keep_memory
)
2930 /* Cache the section contents for elf_link_input_bfd. */
2931 elf_section_data (section
)->this_hdr
.contents
= contents
;
2937 /* Cache or free any memory we allocated for the symbols. */
2939 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
2941 if (! link_info
->keep_memory
)
2945 /* Cache the symbols for elf_link_input_bfd. */
2946 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
2952 /* Now iterate on each symbol in the hash table and perform
2953 the final initialization steps on each. */
2954 elf32_mn10300_link_hash_traverse (hash_table
,
2955 elf32_mn10300_finish_hash_table_entry
,
2957 elf32_mn10300_link_hash_traverse (hash_table
->static_hash_table
,
2958 elf32_mn10300_finish_hash_table_entry
,
2962 /* This section of code collects all our local symbols, sorts
2963 them by value, and looks for multiple symbols referring to
2964 the same address. For those symbols, the flags are merged.
2965 At this point, the only flag that can be set is
2966 MN10300_CONVERT_CALL_TO_CALLS, so we simply OR the flags
2968 int static_count
= 0, i
;
2969 struct elf32_mn10300_link_hash_entry
**entries
;
2970 struct elf32_mn10300_link_hash_entry
**ptr
;
2972 elf32_mn10300_link_hash_traverse (hash_table
->static_hash_table
,
2973 elf32_mn10300_count_hash_table_entries
,
2976 entries
= bfd_malloc (static_count
* sizeof (* ptr
));
2979 elf32_mn10300_link_hash_traverse (hash_table
->static_hash_table
,
2980 elf32_mn10300_list_hash_table_entries
,
2983 qsort (entries
, static_count
, sizeof (entries
[0]), sort_by_value
);
2985 for (i
= 0; i
< static_count
- 1; i
++)
2986 if (entries
[i
]->value
&& entries
[i
]->value
== entries
[i
+1]->value
)
2988 int v
= entries
[i
]->flags
;
2991 for (j
= i
+ 1; j
< static_count
&& entries
[j
]->value
== entries
[i
]->value
; j
++)
2992 v
|= entries
[j
]->flags
;
2994 for (j
= i
; j
< static_count
&& entries
[j
]->value
== entries
[i
]->value
; j
++)
2995 entries
[j
]->flags
= v
;
3001 /* All entries in the hash table are fully initialized. */
3002 hash_table
->flags
|= MN10300_HASH_ENTRIES_INITIALIZED
;
3004 /* Now that everything has been initialized, go through each
3005 code section and delete any prologue insns which will be
3006 redundant because their operations will be performed by
3007 a "call" instruction. */
3008 for (input_bfd
= link_info
->input_bfds
;
3010 input_bfd
= input_bfd
->link
.next
)
3012 /* We're going to need all the local symbols for each bfd. */
3013 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
3014 if (symtab_hdr
->sh_info
!= 0)
3016 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
3017 if (isymbuf
== NULL
)
3018 isymbuf
= bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
3019 symtab_hdr
->sh_info
, 0,
3021 if (isymbuf
== NULL
)
3025 /* Walk over each section in this bfd. */
3026 for (section
= input_bfd
->sections
;
3028 section
= section
->next
)
3030 unsigned int sec_shndx
;
3031 Elf_Internal_Sym
*isym
, *isymend
;
3032 struct elf_link_hash_entry
**hashes
;
3033 struct elf_link_hash_entry
**end_hashes
;
3034 unsigned int symcount
;
3036 /* Skip non-code sections and empty sections. */
3037 if ((section
->flags
& SEC_CODE
) == 0 || section
->size
== 0)
3040 if (section
->reloc_count
!= 0)
3042 /* Get a copy of the native relocations. */
3043 internal_relocs
= _bfd_elf_link_read_relocs (input_bfd
, section
,
3045 link_info
->keep_memory
);
3046 if (internal_relocs
== NULL
)
3050 /* Get cached copy of section contents if it exists. */
3051 if (elf_section_data (section
)->this_hdr
.contents
!= NULL
)
3052 contents
= elf_section_data (section
)->this_hdr
.contents
;
3055 /* Go get them off disk. */
3056 if (!bfd_malloc_and_get_section (input_bfd
, section
,
3061 sec_shndx
= _bfd_elf_section_from_bfd_section (input_bfd
,
3064 /* Now look for any function in this section which needs
3065 insns deleted from its prologue. */
3066 isymend
= isymbuf
+ symtab_hdr
->sh_info
;
3067 for (isym
= isymbuf
; isym
< isymend
; isym
++)
3069 struct elf32_mn10300_link_hash_entry
*sym_hash
;
3070 asection
*sym_sec
= NULL
;
3071 const char *sym_name
;
3073 struct elf_link_hash_table
*elftab
;
3076 if (isym
->st_shndx
!= sec_shndx
)
3079 if (isym
->st_shndx
== SHN_UNDEF
)
3080 sym_sec
= bfd_und_section_ptr
;
3081 else if (isym
->st_shndx
== SHN_ABS
)
3082 sym_sec
= bfd_abs_section_ptr
;
3083 else if (isym
->st_shndx
== SHN_COMMON
)
3084 sym_sec
= bfd_com_section_ptr
;
3087 = bfd_section_from_elf_index (input_bfd
, isym
->st_shndx
);
3090 = bfd_elf_string_from_elf_section (input_bfd
,
3091 symtab_hdr
->sh_link
,
3094 /* Tack on an ID so we can uniquely identify this
3095 local symbol in the global hash table. */
3096 amt
= strlen (sym_name
) + 10;
3097 new_name
= bfd_malloc (amt
);
3098 if (new_name
== NULL
)
3100 sprintf (new_name
, "%s_%08x", sym_name
, sym_sec
->id
);
3101 sym_name
= new_name
;
3103 elftab
= & hash_table
->static_hash_table
->root
;
3104 sym_hash
= (struct elf32_mn10300_link_hash_entry
*)
3105 elf_link_hash_lookup (elftab
, sym_name
,
3106 FALSE
, FALSE
, FALSE
);
3109 if (sym_hash
== NULL
)
3112 if (! (sym_hash
->flags
& MN10300_CONVERT_CALL_TO_CALLS
)
3113 && ! (sym_hash
->flags
& MN10300_DELETED_PROLOGUE_BYTES
))
3117 /* Note that we've changed things. */
3118 elf_section_data (section
)->relocs
= internal_relocs
;
3119 elf_section_data (section
)->this_hdr
.contents
= contents
;
3120 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3122 /* Count how many bytes we're going to delete. */
3123 if (sym_hash
->movm_args
)
3126 if (sym_hash
->stack_size
> 0)
3128 if (sym_hash
->stack_size
<= 128)
3134 /* Note that we've deleted prologue bytes for this
3136 sym_hash
->flags
|= MN10300_DELETED_PROLOGUE_BYTES
;
3138 /* Actually delete the bytes. */
3139 if (!mn10300_elf_relax_delete_bytes (input_bfd
,
3145 /* Something changed. Not strictly necessary, but
3146 may lead to more relaxing opportunities. */
3151 /* Look for any global functions in this section which
3152 need insns deleted from their prologues. */
3153 symcount
= (symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
)
3154 - symtab_hdr
->sh_info
);
3155 hashes
= elf_sym_hashes (input_bfd
);
3156 end_hashes
= hashes
+ symcount
;
3157 for (; hashes
< end_hashes
; hashes
++)
3159 struct elf32_mn10300_link_hash_entry
*sym_hash
;
3161 sym_hash
= (struct elf32_mn10300_link_hash_entry
*) *hashes
;
3162 if ((sym_hash
->root
.root
.type
== bfd_link_hash_defined
3163 || sym_hash
->root
.root
.type
== bfd_link_hash_defweak
)
3164 && sym_hash
->root
.root
.u
.def
.section
== section
3165 && ! (sym_hash
->flags
& MN10300_CONVERT_CALL_TO_CALLS
)
3166 && ! (sym_hash
->flags
& MN10300_DELETED_PROLOGUE_BYTES
))
3170 struct elf_link_hash_entry
**hh
;
3172 /* Note that we've changed things. */
3173 elf_section_data (section
)->relocs
= internal_relocs
;
3174 elf_section_data (section
)->this_hdr
.contents
= contents
;
3175 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3177 /* Count how many bytes we're going to delete. */
3178 if (sym_hash
->movm_args
)
3181 if (sym_hash
->stack_size
> 0)
3183 if (sym_hash
->stack_size
<= 128)
3189 /* Note that we've deleted prologue bytes for this
3191 sym_hash
->flags
|= MN10300_DELETED_PROLOGUE_BYTES
;
3193 /* Actually delete the bytes. */
3194 symval
= sym_hash
->root
.root
.u
.def
.value
;
3195 if (!mn10300_elf_relax_delete_bytes (input_bfd
,
3201 /* There may be other C++ functions symbols with the same
3202 address. If so then mark these as having had their
3203 prologue bytes deleted as well. */
3204 for (hh
= elf_sym_hashes (input_bfd
); hh
< end_hashes
; hh
++)
3206 struct elf32_mn10300_link_hash_entry
*h
;
3208 h
= (struct elf32_mn10300_link_hash_entry
*) * hh
;
3211 && (h
->root
.root
.type
== bfd_link_hash_defined
3212 || h
->root
.root
.type
== bfd_link_hash_defweak
)
3213 && h
->root
.root
.u
.def
.section
== section
3214 && ! (h
->flags
& MN10300_CONVERT_CALL_TO_CALLS
)
3215 && h
->root
.root
.u
.def
.value
== symval
3216 && h
->root
.type
== STT_FUNC
)
3217 h
->flags
|= MN10300_DELETED_PROLOGUE_BYTES
;
3220 /* Something changed. Not strictly necessary, but
3221 may lead to more relaxing opportunities. */
3226 /* Cache or free any memory we allocated for the relocs. */
3227 if (elf_section_data (section
)->relocs
!= internal_relocs
)
3228 free (internal_relocs
);
3229 internal_relocs
= NULL
;
3231 /* Cache or free any memory we allocated for the contents. */
3232 if (contents
!= NULL
3233 && elf_section_data (section
)->this_hdr
.contents
!= contents
)
3235 if (! link_info
->keep_memory
)
3238 /* Cache the section contents for elf_link_input_bfd. */
3239 elf_section_data (section
)->this_hdr
.contents
= contents
;
3244 /* Cache or free any memory we allocated for the symbols. */
3246 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
3248 if (! link_info
->keep_memory
)
3251 /* Cache the symbols for elf_link_input_bfd. */
3252 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3258 /* (Re)initialize for the basic instruction shortening/relaxing pass. */
3260 internal_relocs
= NULL
;
3262 /* For error_return. */
3265 /* We don't have to do anything for a relocatable link, if
3266 this section does not have relocs, or if this is not a
3268 if (bfd_link_relocatable (link_info
)
3269 || (sec
->flags
& SEC_RELOC
) == 0
3270 || sec
->reloc_count
== 0
3271 || (sec
->flags
& SEC_CODE
) == 0)
3274 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3276 /* Get a copy of the native relocations. */
3277 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, sec
, NULL
, NULL
,
3278 link_info
->keep_memory
);
3279 if (internal_relocs
== NULL
)
3282 /* Scan for worst case alignment gap changes. Note that this logic
3283 is not ideal; what we should do is run this scan for every
3284 opcode/address range and adjust accordingly, but that's
3285 expensive. Worst case is that for an alignment of N bytes, we
3286 move by 2*N-N-1 bytes, assuming we have aligns of 1, 2, 4, 8, etc
3287 all before it. Plus, this still doesn't cover cross-section
3288 jumps with section alignment. */
3289 irelend
= internal_relocs
+ sec
->reloc_count
;
3290 align_gap_adjustment
= 0;
3291 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
3293 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_ALIGN
)
3295 bfd_vma adj
= 1 << irel
->r_addend
;
3296 bfd_vma aend
= irel
->r_offset
;
3298 aend
= BFD_ALIGN (aend
, 1 << irel
->r_addend
);
3299 adj
= 2 * adj
- adj
- 1;
3301 /* Record the biggest adjustmnet. Skip any alignment at the
3302 end of our section. */
3303 if (align_gap_adjustment
< adj
3304 && aend
< sec
->output_section
->vma
+ sec
->output_offset
+ sec
->size
)
3305 align_gap_adjustment
= adj
;
3309 /* Walk through them looking for relaxing opportunities. */
3310 irelend
= internal_relocs
+ sec
->reloc_count
;
3311 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
3314 bfd_signed_vma jump_offset
;
3315 asection
*sym_sec
= NULL
;
3316 struct elf32_mn10300_link_hash_entry
*h
= NULL
;
3318 /* If this isn't something that can be relaxed, then ignore
3320 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_NONE
3321 || ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_8
3322 || ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_MAX
)
3325 /* Get the section contents if we haven't done so already. */
3326 if (contents
== NULL
)
3328 /* Get cached copy if it exists. */
3329 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
3330 contents
= elf_section_data (sec
)->this_hdr
.contents
;
3333 /* Go get them off disk. */
3334 if (!bfd_malloc_and_get_section (abfd
, sec
, &contents
))
3339 /* Read this BFD's symbols if we haven't done so already. */
3340 if (isymbuf
== NULL
&& symtab_hdr
->sh_info
!= 0)
3342 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
3343 if (isymbuf
== NULL
)
3344 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
3345 symtab_hdr
->sh_info
, 0,
3347 if (isymbuf
== NULL
)
3351 /* Get the value of the symbol referred to by the reloc. */
3352 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
3354 Elf_Internal_Sym
*isym
;
3355 const char *sym_name
;
3358 /* A local symbol. */
3359 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
3360 if (isym
->st_shndx
== SHN_UNDEF
)
3361 sym_sec
= bfd_und_section_ptr
;
3362 else if (isym
->st_shndx
== SHN_ABS
)
3363 sym_sec
= bfd_abs_section_ptr
;
3364 else if (isym
->st_shndx
== SHN_COMMON
)
3365 sym_sec
= bfd_com_section_ptr
;
3367 sym_sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
3369 sym_name
= bfd_elf_string_from_elf_section (abfd
,
3370 symtab_hdr
->sh_link
,
3373 if ((sym_sec
->flags
& SEC_MERGE
)
3374 && sym_sec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
3376 symval
= isym
->st_value
;
3378 /* GAS may reduce relocations against symbols in SEC_MERGE
3379 sections to a relocation against the section symbol when
3380 the original addend was zero. When the reloc is against
3381 a section symbol we should include the addend in the
3382 offset passed to _bfd_merged_section_offset, since the
3383 location of interest is the original symbol. On the
3384 other hand, an access to "sym+addend" where "sym" is not
3385 a section symbol should not include the addend; Such an
3386 access is presumed to be an offset from "sym"; The
3387 location of interest is just "sym". */
3388 if (ELF_ST_TYPE (isym
->st_info
) == STT_SECTION
)
3389 symval
+= irel
->r_addend
;
3391 symval
= _bfd_merged_section_offset (abfd
, & sym_sec
,
3392 elf_section_data (sym_sec
)->sec_info
,
3395 if (ELF_ST_TYPE (isym
->st_info
) != STT_SECTION
)
3396 symval
+= irel
->r_addend
;
3398 symval
+= sym_sec
->output_section
->vma
3399 + sym_sec
->output_offset
- irel
->r_addend
;
3402 symval
= (isym
->st_value
3403 + sym_sec
->output_section
->vma
3404 + sym_sec
->output_offset
);
3406 /* Tack on an ID so we can uniquely identify this
3407 local symbol in the global hash table. */
3408 new_name
= bfd_malloc ((bfd_size_type
) strlen (sym_name
) + 10);
3409 if (new_name
== NULL
)
3411 sprintf (new_name
, "%s_%08x", sym_name
, sym_sec
->id
);
3412 sym_name
= new_name
;
3414 h
= (struct elf32_mn10300_link_hash_entry
*)
3415 elf_link_hash_lookup (&hash_table
->static_hash_table
->root
,
3416 sym_name
, FALSE
, FALSE
, FALSE
);
3423 /* An external symbol. */
3424 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
3425 h
= (struct elf32_mn10300_link_hash_entry
*)
3426 (elf_sym_hashes (abfd
)[indx
]);
3427 BFD_ASSERT (h
!= NULL
);
3428 if (h
->root
.root
.type
!= bfd_link_hash_defined
3429 && h
->root
.root
.type
!= bfd_link_hash_defweak
)
3430 /* This appears to be a reference to an undefined
3431 symbol. Just ignore it--it will be caught by the
3432 regular reloc processing. */
3435 /* Check for a reference to a discarded symbol and ignore it. */
3436 if (h
->root
.root
.u
.def
.section
->output_section
== NULL
)
3439 sym_sec
= h
->root
.root
.u
.def
.section
->output_section
;
3441 symval
= (h
->root
.root
.u
.def
.value
3442 + h
->root
.root
.u
.def
.section
->output_section
->vma
3443 + h
->root
.root
.u
.def
.section
->output_offset
);
3446 /* For simplicity of coding, we are going to modify the section
3447 contents, the section relocs, and the BFD symbol table. We
3448 must tell the rest of the code not to free up this
3449 information. It would be possible to instead create a table
3450 of changes which have to be made, as is done in coff-mips.c;
3451 that would be more work, but would require less memory when
3452 the linker is run. */
3454 /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative
3455 branch/call, also deal with "call" -> "calls" conversions and
3456 insertion of prologue data into "call" instructions. */
3457 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_PCREL32
3458 || ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_PLT32
)
3460 bfd_vma value
= symval
;
3462 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_PLT32
3464 && ELF_ST_VISIBILITY (h
->root
.other
) != STV_INTERNAL
3465 && ELF_ST_VISIBILITY (h
->root
.other
) != STV_HIDDEN
3466 && h
->root
.plt
.offset
!= (bfd_vma
) -1)
3470 splt
= hash_table
->root
.splt
;
3471 value
= ((splt
->output_section
->vma
3472 + splt
->output_offset
3473 + h
->root
.plt
.offset
)
3474 - (sec
->output_section
->vma
3475 + sec
->output_offset
3479 /* If we've got a "call" instruction that needs to be turned
3480 into a "calls" instruction, do so now. It saves a byte. */
3481 if (h
&& (h
->flags
& MN10300_CONVERT_CALL_TO_CALLS
))
3485 /* Get the opcode. */
3486 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
3488 /* Make sure we're working with a "call" instruction! */
3491 /* Note that we've changed the relocs, section contents,
3493 elf_section_data (sec
)->relocs
= internal_relocs
;
3494 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3495 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3497 /* Fix the opcode. */
3498 bfd_put_8 (abfd
, 0xfc, contents
+ irel
->r_offset
- 1);
3499 bfd_put_8 (abfd
, 0xff, contents
+ irel
->r_offset
);
3501 /* Fix irel->r_offset and irel->r_addend. */
3502 irel
->r_offset
+= 1;
3503 irel
->r_addend
+= 1;
3505 /* Delete one byte of data. */
3506 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3507 irel
->r_offset
+ 3, 1))
3510 /* That will change things, so, we should relax again.
3511 Note that this is not required, and it may be slow. */
3517 /* We've got a "call" instruction which needs some data
3518 from target function filled in. */
3521 /* Get the opcode. */
3522 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
3524 /* Insert data from the target function into the "call"
3525 instruction if needed. */
3528 bfd_put_8 (abfd
, h
->movm_args
, contents
+ irel
->r_offset
+ 4);
3529 bfd_put_8 (abfd
, h
->stack_size
+ h
->movm_stack_size
,
3530 contents
+ irel
->r_offset
+ 5);
3534 /* Deal with pc-relative gunk. */
3535 value
-= (sec
->output_section
->vma
+ sec
->output_offset
);
3536 value
-= irel
->r_offset
;
3537 value
+= irel
->r_addend
;
3539 /* See if the value will fit in 16 bits, note the high value is
3540 0x7fff + 2 as the target will be two bytes closer if we are
3541 able to relax, if it's in the same section. */
3542 if (sec
->output_section
== sym_sec
->output_section
)
3543 jump_offset
= 0x8001;
3545 jump_offset
= 0x7fff;
3547 /* Account for jumps across alignment boundaries using
3548 align_gap_adjustment. */
3549 if ((bfd_signed_vma
) value
< jump_offset
- (bfd_signed_vma
) align_gap_adjustment
3550 && ((bfd_signed_vma
) value
> -0x8000 + (bfd_signed_vma
) align_gap_adjustment
))
3554 /* Get the opcode. */
3555 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
3557 if (code
!= 0xdc && code
!= 0xdd && code
!= 0xff)
3560 /* Note that we've changed the relocs, section contents, etc. */
3561 elf_section_data (sec
)->relocs
= internal_relocs
;
3562 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3563 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3565 /* Fix the opcode. */
3567 bfd_put_8 (abfd
, 0xcc, contents
+ irel
->r_offset
- 1);
3568 else if (code
== 0xdd)
3569 bfd_put_8 (abfd
, 0xcd, contents
+ irel
->r_offset
- 1);
3570 else if (code
== 0xff)
3571 bfd_put_8 (abfd
, 0xfa, contents
+ irel
->r_offset
- 2);
3573 /* Fix the relocation's type. */
3574 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
3575 (ELF32_R_TYPE (irel
->r_info
)
3576 == (int) R_MN10300_PLT32
)
3580 /* Delete two bytes of data. */
3581 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3582 irel
->r_offset
+ 1, 2))
3585 /* That will change things, so, we should relax again.
3586 Note that this is not required, and it may be slow. */
3591 /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative
3593 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_PCREL16
)
3595 bfd_vma value
= symval
;
3597 /* If we've got a "call" instruction that needs to be turned
3598 into a "calls" instruction, do so now. It saves a byte. */
3599 if (h
&& (h
->flags
& MN10300_CONVERT_CALL_TO_CALLS
))
3603 /* Get the opcode. */
3604 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
3606 /* Make sure we're working with a "call" instruction! */
3609 /* Note that we've changed the relocs, section contents,
3611 elf_section_data (sec
)->relocs
= internal_relocs
;
3612 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3613 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3615 /* Fix the opcode. */
3616 bfd_put_8 (abfd
, 0xfa, contents
+ irel
->r_offset
- 1);
3617 bfd_put_8 (abfd
, 0xff, contents
+ irel
->r_offset
);
3619 /* Fix irel->r_offset and irel->r_addend. */
3620 irel
->r_offset
+= 1;
3621 irel
->r_addend
+= 1;
3623 /* Delete one byte of data. */
3624 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3625 irel
->r_offset
+ 1, 1))
3628 /* That will change things, so, we should relax again.
3629 Note that this is not required, and it may be slow. */
3637 /* Get the opcode. */
3638 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
3640 /* Insert data from the target function into the "call"
3641 instruction if needed. */
3644 bfd_put_8 (abfd
, h
->movm_args
, contents
+ irel
->r_offset
+ 2);
3645 bfd_put_8 (abfd
, h
->stack_size
+ h
->movm_stack_size
,
3646 contents
+ irel
->r_offset
+ 3);
3650 /* Deal with pc-relative gunk. */
3651 value
-= (sec
->output_section
->vma
+ sec
->output_offset
);
3652 value
-= irel
->r_offset
;
3653 value
+= irel
->r_addend
;
3655 /* See if the value will fit in 8 bits, note the high value is
3656 0x7f + 1 as the target will be one bytes closer if we are
3658 if ((long) value
< 0x80 && (long) value
> -0x80)
3662 /* Get the opcode. */
3663 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
3668 /* Note that we've changed the relocs, section contents, etc. */
3669 elf_section_data (sec
)->relocs
= internal_relocs
;
3670 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3671 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3673 /* Fix the opcode. */
3674 bfd_put_8 (abfd
, 0xca, contents
+ irel
->r_offset
- 1);
3676 /* Fix the relocation's type. */
3677 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
3680 /* Delete one byte of data. */
3681 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3682 irel
->r_offset
+ 1, 1))
3685 /* That will change things, so, we should relax again.
3686 Note that this is not required, and it may be slow. */
3691 /* Try to eliminate an unconditional 8 bit pc-relative branch
3692 which immediately follows a conditional 8 bit pc-relative
3693 branch around the unconditional branch.
3700 This happens when the bCC can't reach lab2 at assembly time,
3701 but due to other relaxations it can reach at link time. */
3702 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_PCREL8
)
3704 Elf_Internal_Rela
*nrel
;
3705 bfd_vma value
= symval
;
3708 /* Deal with pc-relative gunk. */
3709 value
-= (sec
->output_section
->vma
+ sec
->output_offset
);
3710 value
-= irel
->r_offset
;
3711 value
+= irel
->r_addend
;
3713 /* Do nothing if this reloc is the last byte in the section. */
3714 if (irel
->r_offset
== sec
->size
)
3717 /* See if the next instruction is an unconditional pc-relative
3718 branch, more often than not this test will fail, so we
3719 test it first to speed things up. */
3720 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
+ 1);
3724 /* Also make sure the next relocation applies to the next
3725 instruction and that it's a pc-relative 8 bit branch. */
3728 || irel
->r_offset
+ 2 != nrel
->r_offset
3729 || ELF32_R_TYPE (nrel
->r_info
) != (int) R_MN10300_PCREL8
)
3732 /* Make sure our destination immediately follows the
3733 unconditional branch. */
3734 if (symval
!= (sec
->output_section
->vma
+ sec
->output_offset
3735 + irel
->r_offset
+ 3))
3738 /* Now make sure we are a conditional branch. This may not
3739 be necessary, but why take the chance.
3741 Note these checks assume that R_MN10300_PCREL8 relocs
3742 only occur on bCC and bCCx insns. If they occured
3743 elsewhere, we'd need to know the start of this insn
3744 for this check to be accurate. */
3745 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
3746 if (code
!= 0xc0 && code
!= 0xc1 && code
!= 0xc2
3747 && code
!= 0xc3 && code
!= 0xc4 && code
!= 0xc5
3748 && code
!= 0xc6 && code
!= 0xc7 && code
!= 0xc8
3749 && code
!= 0xc9 && code
!= 0xe8 && code
!= 0xe9
3750 && code
!= 0xea && code
!= 0xeb)
3753 /* We also have to be sure there is no symbol/label
3754 at the unconditional branch. */
3755 if (mn10300_elf_symbol_address_p (abfd
, sec
, isymbuf
,
3756 irel
->r_offset
+ 1))
3759 /* Note that we've changed the relocs, section contents, etc. */
3760 elf_section_data (sec
)->relocs
= internal_relocs
;
3761 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3762 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3764 /* Reverse the condition of the first branch. */
3810 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 1);
3812 /* Set the reloc type and symbol for the first branch
3813 from the second branch. */
3814 irel
->r_info
= nrel
->r_info
;
3816 /* Make the reloc for the second branch a null reloc. */
3817 nrel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (nrel
->r_info
),
3820 /* Delete two bytes of data. */
3821 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3822 irel
->r_offset
+ 1, 2))
3825 /* That will change things, so, we should relax again.
3826 Note that this is not required, and it may be slow. */
3830 /* Try to turn a 24 immediate, displacement or absolute address
3831 into a 8 immediate, displacement or absolute address. */
3832 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_24
)
3834 bfd_vma value
= symval
;
3835 value
+= irel
->r_addend
;
3837 /* See if the value will fit in 8 bits. */
3838 if ((long) value
< 0x7f && (long) value
> -0x80)
3842 /* AM33 insns which have 24 operands are 6 bytes long and
3843 will have 0xfd as the first byte. */
3845 /* Get the first opcode. */
3846 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 3);
3850 /* Get the second opcode. */
3851 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 2);
3853 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
3854 equivalent instructions exists. */
3855 if (code
!= 0x6b && code
!= 0x7b
3856 && code
!= 0x8b && code
!= 0x9b
3857 && ((code
& 0x0f) == 0x09 || (code
& 0x0f) == 0x08
3858 || (code
& 0x0f) == 0x0a || (code
& 0x0f) == 0x0b
3859 || (code
& 0x0f) == 0x0e))
3861 /* Not safe if the high bit is on as relaxing may
3862 move the value out of high mem and thus not fit
3863 in a signed 8bit value. This is currently over
3865 if ((value
& 0x80) == 0)
3867 /* Note that we've changed the relocation contents,
3869 elf_section_data (sec
)->relocs
= internal_relocs
;
3870 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3871 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3873 /* Fix the opcode. */
3874 bfd_put_8 (abfd
, 0xfb, contents
+ irel
->r_offset
- 3);
3875 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 2);
3877 /* Fix the relocation's type. */
3879 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
3882 /* Delete two bytes of data. */
3883 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3884 irel
->r_offset
+ 1, 2))
3887 /* That will change things, so, we should relax
3888 again. Note that this is not required, and it
3898 /* Try to turn a 32bit immediate, displacement or absolute address
3899 into a 16bit immediate, displacement or absolute address. */
3900 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_32
3901 || ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_GOT32
3902 || ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_GOTOFF32
)
3904 bfd_vma value
= symval
;
3906 if (ELF32_R_TYPE (irel
->r_info
) != (int) R_MN10300_32
)
3910 sgot
= hash_table
->root
.sgot
;
3911 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_GOT32
)
3913 value
= sgot
->output_offset
;
3916 value
+= h
->root
.got
.offset
;
3918 value
+= (elf_local_got_offsets
3919 (abfd
)[ELF32_R_SYM (irel
->r_info
)]);
3921 else if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_GOTOFF32
)
3922 value
-= sgot
->output_section
->vma
;
3923 else if (ELF32_R_TYPE (irel
->r_info
) == (int) R_MN10300_GOTPC32
)
3924 value
= (sgot
->output_section
->vma
3925 - (sec
->output_section
->vma
3926 + sec
->output_offset
3932 value
+= irel
->r_addend
;
3934 /* See if the value will fit in 24 bits.
3935 We allow any 16bit match here. We prune those we can't
3937 if (value
+ 0x800000 < 0x1000000 && irel
->r_offset
>= 3)
3941 /* AM33 insns which have 32bit operands are 7 bytes long and
3942 will have 0xfe as the first byte. */
3944 /* Get the first opcode. */
3945 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 3);
3949 /* Get the second opcode. */
3950 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 2);
3952 /* All the am33 32 -> 24 relaxing possibilities. */
3953 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
3954 equivalent instructions exists. */
3955 if (code
!= 0x6b && code
!= 0x7b
3956 && code
!= 0x8b && code
!= 0x9b
3957 && (ELF32_R_TYPE (irel
->r_info
)
3958 != (int) R_MN10300_GOTPC32
)
3959 && ((code
& 0x0f) == 0x09 || (code
& 0x0f) == 0x08
3960 || (code
& 0x0f) == 0x0a || (code
& 0x0f) == 0x0b
3961 || (code
& 0x0f) == 0x0e))
3963 /* Not safe if the high bit is on as relaxing may
3964 move the value out of high mem and thus not fit
3965 in a signed 16bit value. This is currently over
3967 if ((value
& 0x8000) == 0)
3969 /* Note that we've changed the relocation contents,
3971 elf_section_data (sec
)->relocs
= internal_relocs
;
3972 elf_section_data (sec
)->this_hdr
.contents
= contents
;
3973 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
3975 /* Fix the opcode. */
3976 bfd_put_8 (abfd
, 0xfd, contents
+ irel
->r_offset
- 3);
3977 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 2);
3979 /* Fix the relocation's type. */
3981 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
3982 (ELF32_R_TYPE (irel
->r_info
)
3983 == (int) R_MN10300_GOTOFF32
)
3984 ? R_MN10300_GOTOFF24
3985 : (ELF32_R_TYPE (irel
->r_info
)
3986 == (int) R_MN10300_GOT32
)
3990 /* Delete one byte of data. */
3991 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
3992 irel
->r_offset
+ 3, 1))
3995 /* That will change things, so, we should relax
3996 again. Note that this is not required, and it
4005 /* See if the value will fit in 16 bits.
4006 We allow any 16bit match here. We prune those we can't
4008 if (value
+ 0x8000 < 0x10000 && irel
->r_offset
>= 2)
4012 /* Most insns which have 32bit operands are 6 bytes long;
4013 exceptions are pcrel insns and bit insns.
4015 We handle pcrel insns above. We don't bother trying
4016 to handle the bit insns here.
4018 The first byte of the remaining insns will be 0xfc. */
4020 /* Get the first opcode. */
4021 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 2);
4026 /* Get the second opcode. */
4027 code
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
- 1);
4029 if ((code
& 0xf0) < 0x80)
4030 switch (code
& 0xf0)
4032 /* mov (d32,am),dn -> mov (d32,am),dn
4033 mov dm,(d32,am) -> mov dn,(d32,am)
4034 mov (d32,am),an -> mov (d32,am),an
4035 mov dm,(d32,am) -> mov dn,(d32,am)
4036 movbu (d32,am),dn -> movbu (d32,am),dn
4037 movbu dm,(d32,am) -> movbu dn,(d32,am)
4038 movhu (d32,am),dn -> movhu (d32,am),dn
4039 movhu dm,(d32,am) -> movhu dn,(d32,am) */
4048 /* Not safe if the high bit is on as relaxing may
4049 move the value out of high mem and thus not fit
4050 in a signed 16bit value. */
4052 && (value
& 0x8000))
4055 /* Note that we've changed the relocation contents, etc. */
4056 elf_section_data (sec
)->relocs
= internal_relocs
;
4057 elf_section_data (sec
)->this_hdr
.contents
= contents
;
4058 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
4060 /* Fix the opcode. */
4061 bfd_put_8 (abfd
, 0xfa, contents
+ irel
->r_offset
- 2);
4062 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 1);
4064 /* Fix the relocation's type. */
4065 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
4066 (ELF32_R_TYPE (irel
->r_info
)
4067 == (int) R_MN10300_GOTOFF32
)
4068 ? R_MN10300_GOTOFF16
4069 : (ELF32_R_TYPE (irel
->r_info
)
4070 == (int) R_MN10300_GOT32
)
4072 : (ELF32_R_TYPE (irel
->r_info
)
4073 == (int) R_MN10300_GOTPC32
)
4074 ? R_MN10300_GOTPC16
:
4077 /* Delete two bytes of data. */
4078 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
4079 irel
->r_offset
+ 2, 2))
4082 /* That will change things, so, we should relax again.
4083 Note that this is not required, and it may be slow. */
4087 else if ((code
& 0xf0) == 0x80
4088 || (code
& 0xf0) == 0x90)
4089 switch (code
& 0xf3)
4091 /* mov dn,(abs32) -> mov dn,(abs16)
4092 movbu dn,(abs32) -> movbu dn,(abs16)
4093 movhu dn,(abs32) -> movhu dn,(abs16) */
4097 /* Note that we've changed the relocation contents, etc. */
4098 elf_section_data (sec
)->relocs
= internal_relocs
;
4099 elf_section_data (sec
)->this_hdr
.contents
= contents
;
4100 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
4102 if ((code
& 0xf3) == 0x81)
4103 code
= 0x01 + (code
& 0x0c);
4104 else if ((code
& 0xf3) == 0x82)
4105 code
= 0x02 + (code
& 0x0c);
4106 else if ((code
& 0xf3) == 0x83)
4107 code
= 0x03 + (code
& 0x0c);
4111 /* Fix the opcode. */
4112 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 2);
4114 /* Fix the relocation's type. */
4115 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
4116 (ELF32_R_TYPE (irel
->r_info
)
4117 == (int) R_MN10300_GOTOFF32
)
4118 ? R_MN10300_GOTOFF16
4119 : (ELF32_R_TYPE (irel
->r_info
)
4120 == (int) R_MN10300_GOT32
)
4122 : (ELF32_R_TYPE (irel
->r_info
)
4123 == (int) R_MN10300_GOTPC32
)
4124 ? R_MN10300_GOTPC16
:
4127 /* The opcode got shorter too, so we have to fix the
4128 addend and offset too! */
4129 irel
->r_offset
-= 1;
4131 /* Delete three bytes of data. */
4132 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
4133 irel
->r_offset
+ 1, 3))
4136 /* That will change things, so, we should relax again.
4137 Note that this is not required, and it may be slow. */
4141 /* mov am,(abs32) -> mov am,(abs16)
4142 mov am,(d32,sp) -> mov am,(d16,sp)
4143 mov dm,(d32,sp) -> mov dm,(d32,sp)
4144 movbu dm,(d32,sp) -> movbu dm,(d32,sp)
4145 movhu dm,(d32,sp) -> movhu dm,(d32,sp) */
4151 /* sp-based offsets are zero-extended. */
4152 if (code
>= 0x90 && code
<= 0x93
4153 && (long) value
< 0)
4156 /* Note that we've changed the relocation contents, etc. */
4157 elf_section_data (sec
)->relocs
= internal_relocs
;
4158 elf_section_data (sec
)->this_hdr
.contents
= contents
;
4159 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
4161 /* Fix the opcode. */
4162 bfd_put_8 (abfd
, 0xfa, contents
+ irel
->r_offset
- 2);
4163 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 1);
4165 /* Fix the relocation's type. */
4166 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
4167 (ELF32_R_TYPE (irel
->r_info
)
4168 == (int) R_MN10300_GOTOFF32
)
4169 ? R_MN10300_GOTOFF16
4170 : (ELF32_R_TYPE (irel
->r_info
)
4171 == (int) R_MN10300_GOT32
)
4173 : (ELF32_R_TYPE (irel
->r_info
)
4174 == (int) R_MN10300_GOTPC32
)
4175 ? R_MN10300_GOTPC16
:
4178 /* Delete two bytes of data. */
4179 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
4180 irel
->r_offset
+ 2, 2))
4183 /* That will change things, so, we should relax again.
4184 Note that this is not required, and it may be slow. */
4188 else if ((code
& 0xf0) < 0xf0)
4189 switch (code
& 0xfc)
4191 /* mov imm32,dn -> mov imm16,dn
4192 mov imm32,an -> mov imm16,an
4193 mov (abs32),dn -> mov (abs16),dn
4194 movbu (abs32),dn -> movbu (abs16),dn
4195 movhu (abs32),dn -> movhu (abs16),dn */
4201 /* Not safe if the high bit is on as relaxing may
4202 move the value out of high mem and thus not fit
4203 in a signed 16bit value. */
4205 && (value
& 0x8000))
4208 /* "mov imm16, an" zero-extends the immediate. */
4209 if ((code
& 0xfc) == 0xdc
4210 && (long) value
< 0)
4213 /* Note that we've changed the relocation contents, etc. */
4214 elf_section_data (sec
)->relocs
= internal_relocs
;
4215 elf_section_data (sec
)->this_hdr
.contents
= contents
;
4216 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
4218 if ((code
& 0xfc) == 0xcc)
4219 code
= 0x2c + (code
& 0x03);
4220 else if ((code
& 0xfc) == 0xdc)
4221 code
= 0x24 + (code
& 0x03);
4222 else if ((code
& 0xfc) == 0xa4)
4223 code
= 0x30 + (code
& 0x03);
4224 else if ((code
& 0xfc) == 0xa8)
4225 code
= 0x34 + (code
& 0x03);
4226 else if ((code
& 0xfc) == 0xac)
4227 code
= 0x38 + (code
& 0x03);
4231 /* Fix the opcode. */
4232 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 2);
4234 /* Fix the relocation's type. */
4235 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
4236 (ELF32_R_TYPE (irel
->r_info
)
4237 == (int) R_MN10300_GOTOFF32
)
4238 ? R_MN10300_GOTOFF16
4239 : (ELF32_R_TYPE (irel
->r_info
)
4240 == (int) R_MN10300_GOT32
)
4242 : (ELF32_R_TYPE (irel
->r_info
)
4243 == (int) R_MN10300_GOTPC32
)
4244 ? R_MN10300_GOTPC16
:
4247 /* The opcode got shorter too, so we have to fix the
4248 addend and offset too! */
4249 irel
->r_offset
-= 1;
4251 /* Delete three bytes of data. */
4252 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
4253 irel
->r_offset
+ 1, 3))
4256 /* That will change things, so, we should relax again.
4257 Note that this is not required, and it may be slow. */
4261 /* mov (abs32),an -> mov (abs16),an
4262 mov (d32,sp),an -> mov (d16,sp),an
4263 mov (d32,sp),dn -> mov (d16,sp),dn
4264 movbu (d32,sp),dn -> movbu (d16,sp),dn
4265 movhu (d32,sp),dn -> movhu (d16,sp),dn
4266 add imm32,dn -> add imm16,dn
4267 cmp imm32,dn -> cmp imm16,dn
4268 add imm32,an -> add imm16,an
4269 cmp imm32,an -> cmp imm16,an
4270 and imm32,dn -> and imm16,dn
4271 or imm32,dn -> or imm16,dn
4272 xor imm32,dn -> xor imm16,dn
4273 btst imm32,dn -> btst imm16,dn */
4289 /* cmp imm16, an zero-extends the immediate. */
4291 && (long) value
< 0)
4294 /* So do sp-based offsets. */
4295 if (code
>= 0xb0 && code
<= 0xb3
4296 && (long) value
< 0)
4299 /* Note that we've changed the relocation contents, etc. */
4300 elf_section_data (sec
)->relocs
= internal_relocs
;
4301 elf_section_data (sec
)->this_hdr
.contents
= contents
;
4302 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
4304 /* Fix the opcode. */
4305 bfd_put_8 (abfd
, 0xfa, contents
+ irel
->r_offset
- 2);
4306 bfd_put_8 (abfd
, code
, contents
+ irel
->r_offset
- 1);
4308 /* Fix the relocation's type. */
4309 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
4310 (ELF32_R_TYPE (irel
->r_info
)
4311 == (int) R_MN10300_GOTOFF32
)
4312 ? R_MN10300_GOTOFF16
4313 : (ELF32_R_TYPE (irel
->r_info
)
4314 == (int) R_MN10300_GOT32
)
4316 : (ELF32_R_TYPE (irel
->r_info
)
4317 == (int) R_MN10300_GOTPC32
)
4318 ? R_MN10300_GOTPC16
:
4321 /* Delete two bytes of data. */
4322 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
4323 irel
->r_offset
+ 2, 2))
4326 /* That will change things, so, we should relax again.
4327 Note that this is not required, and it may be slow. */
4331 else if (code
== 0xfe)
4333 /* add imm32,sp -> add imm16,sp */
4335 /* Note that we've changed the relocation contents, etc. */
4336 elf_section_data (sec
)->relocs
= internal_relocs
;
4337 elf_section_data (sec
)->this_hdr
.contents
= contents
;
4338 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
4340 /* Fix the opcode. */
4341 bfd_put_8 (abfd
, 0xfa, contents
+ irel
->r_offset
- 2);
4342 bfd_put_8 (abfd
, 0xfe, contents
+ irel
->r_offset
- 1);
4344 /* Fix the relocation's type. */
4345 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
4346 (ELF32_R_TYPE (irel
->r_info
)
4347 == (int) R_MN10300_GOT32
)
4349 : (ELF32_R_TYPE (irel
->r_info
)
4350 == (int) R_MN10300_GOTOFF32
)
4351 ? R_MN10300_GOTOFF16
4352 : (ELF32_R_TYPE (irel
->r_info
)
4353 == (int) R_MN10300_GOTPC32
)
4354 ? R_MN10300_GOTPC16
:
4357 /* Delete two bytes of data. */
4358 if (!mn10300_elf_relax_delete_bytes (abfd
, sec
,
4359 irel
->r_offset
+ 2, 2))
4362 /* That will change things, so, we should relax again.
4363 Note that this is not required, and it may be slow. */
4372 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
4374 if (! link_info
->keep_memory
)
4378 /* Cache the symbols for elf_link_input_bfd. */
4379 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
4383 if (contents
!= NULL
4384 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
4386 if (! link_info
->keep_memory
)
4390 /* Cache the section contents for elf_link_input_bfd. */
4391 elf_section_data (sec
)->this_hdr
.contents
= contents
;
4395 if (elf_section_data (sec
)->relocs
!= internal_relocs
)
4396 free (internal_relocs
);
4401 if (symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
4403 if (elf_section_data (section
)->this_hdr
.contents
!= contents
)
4405 if (elf_section_data (section
)->relocs
!= internal_relocs
)
4406 free (internal_relocs
);
4411 /* This is a version of bfd_generic_get_relocated_section_contents
4412 which uses mn10300_elf_relocate_section. */
4415 mn10300_elf_get_relocated_section_contents (bfd
*output_bfd
,
4416 struct bfd_link_info
*link_info
,
4417 struct bfd_link_order
*link_order
,
4419 bfd_boolean relocatable
,
4422 Elf_Internal_Shdr
*symtab_hdr
;
4423 asection
*input_section
= link_order
->u
.indirect
.section
;
4424 bfd
*input_bfd
= input_section
->owner
;
4425 asection
**sections
= NULL
;
4426 Elf_Internal_Rela
*internal_relocs
= NULL
;
4427 Elf_Internal_Sym
*isymbuf
= NULL
;
4429 /* We only need to handle the case of relaxing, or of having a
4430 particular set of section contents, specially. */
4432 || elf_section_data (input_section
)->this_hdr
.contents
== NULL
)
4433 return bfd_generic_get_relocated_section_contents (output_bfd
, link_info
,
4438 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
4440 memcpy (data
, elf_section_data (input_section
)->this_hdr
.contents
,
4441 (size_t) input_section
->size
);
4443 if ((input_section
->flags
& SEC_RELOC
) != 0
4444 && input_section
->reloc_count
> 0)
4447 Elf_Internal_Sym
*isym
, *isymend
;
4450 internal_relocs
= _bfd_elf_link_read_relocs (input_bfd
, input_section
,
4452 if (internal_relocs
== NULL
)
4455 if (symtab_hdr
->sh_info
!= 0)
4457 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4458 if (isymbuf
== NULL
)
4459 isymbuf
= bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
4460 symtab_hdr
->sh_info
, 0,
4462 if (isymbuf
== NULL
)
4466 amt
= symtab_hdr
->sh_info
;
4467 amt
*= sizeof (asection
*);
4468 sections
= bfd_malloc (amt
);
4469 if (sections
== NULL
&& amt
!= 0)
4472 isymend
= isymbuf
+ symtab_hdr
->sh_info
;
4473 for (isym
= isymbuf
, secpp
= sections
; isym
< isymend
; ++isym
, ++secpp
)
4477 if (isym
->st_shndx
== SHN_UNDEF
)
4478 isec
= bfd_und_section_ptr
;
4479 else if (isym
->st_shndx
== SHN_ABS
)
4480 isec
= bfd_abs_section_ptr
;
4481 else if (isym
->st_shndx
== SHN_COMMON
)
4482 isec
= bfd_com_section_ptr
;
4484 isec
= bfd_section_from_elf_index (input_bfd
, isym
->st_shndx
);
4489 if (! mn10300_elf_relocate_section (output_bfd
, link_info
, input_bfd
,
4490 input_section
, data
, internal_relocs
,
4495 if (symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
4497 if (internal_relocs
!= elf_section_data (input_section
)->relocs
)
4498 free (internal_relocs
);
4505 if (symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
4507 if (internal_relocs
!= elf_section_data (input_section
)->relocs
)
4508 free (internal_relocs
);
4512 /* Assorted hash table functions. */
4514 /* Initialize an entry in the link hash table. */
4516 /* Create an entry in an MN10300 ELF linker hash table. */
4518 static struct bfd_hash_entry
*
4519 elf32_mn10300_link_hash_newfunc (struct bfd_hash_entry
*entry
,
4520 struct bfd_hash_table
*table
,
4523 struct elf32_mn10300_link_hash_entry
*ret
=
4524 (struct elf32_mn10300_link_hash_entry
*) entry
;
4526 /* Allocate the structure if it has not already been allocated by a
4529 ret
= (struct elf32_mn10300_link_hash_entry
*)
4530 bfd_hash_allocate (table
, sizeof (* ret
));
4532 return (struct bfd_hash_entry
*) ret
;
4534 /* Call the allocation method of the superclass. */
4535 ret
= (struct elf32_mn10300_link_hash_entry
*)
4536 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
4540 ret
->direct_calls
= 0;
4541 ret
->stack_size
= 0;
4543 ret
->movm_stack_size
= 0;
4546 ret
->tls_type
= GOT_UNKNOWN
;
4549 return (struct bfd_hash_entry
*) ret
;
4553 _bfd_mn10300_copy_indirect_symbol (struct bfd_link_info
* info
,
4554 struct elf_link_hash_entry
* dir
,
4555 struct elf_link_hash_entry
* ind
)
4557 struct elf32_mn10300_link_hash_entry
* edir
;
4558 struct elf32_mn10300_link_hash_entry
* eind
;
4560 edir
= elf_mn10300_hash_entry (dir
);
4561 eind
= elf_mn10300_hash_entry (ind
);
4563 if (ind
->root
.type
== bfd_link_hash_indirect
4564 && dir
->got
.refcount
<= 0)
4566 edir
->tls_type
= eind
->tls_type
;
4567 eind
->tls_type
= GOT_UNKNOWN
;
4569 edir
->direct_calls
= eind
->direct_calls
;
4570 edir
->stack_size
= eind
->stack_size
;
4571 edir
->movm_args
= eind
->movm_args
;
4572 edir
->movm_stack_size
= eind
->movm_stack_size
;
4573 edir
->flags
= eind
->flags
;
4575 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
4578 /* Destroy an mn10300 ELF linker hash table. */
4581 elf32_mn10300_link_hash_table_free (bfd
*obfd
)
4583 struct elf32_mn10300_link_hash_table
*ret
4584 = (struct elf32_mn10300_link_hash_table
*) obfd
->link
.hash
;
4586 obfd
->link
.hash
= &ret
->static_hash_table
->root
.root
;
4587 _bfd_elf_link_hash_table_free (obfd
);
4588 obfd
->is_linker_output
= TRUE
;
4589 obfd
->link
.hash
= &ret
->root
.root
;
4590 _bfd_elf_link_hash_table_free (obfd
);
4593 /* Create an mn10300 ELF linker hash table. */
4595 static struct bfd_link_hash_table
*
4596 elf32_mn10300_link_hash_table_create (bfd
*abfd
)
4598 struct elf32_mn10300_link_hash_table
*ret
;
4599 size_t amt
= sizeof (* ret
);
4601 ret
= bfd_zmalloc (amt
);
4605 amt
= sizeof (struct elf_link_hash_table
);
4606 ret
->static_hash_table
= bfd_zmalloc (amt
);
4607 if (ret
->static_hash_table
== NULL
)
4613 if (!_bfd_elf_link_hash_table_init (&ret
->static_hash_table
->root
, abfd
,
4614 elf32_mn10300_link_hash_newfunc
,
4615 sizeof (struct elf32_mn10300_link_hash_entry
),
4618 free (ret
->static_hash_table
);
4623 abfd
->is_linker_output
= FALSE
;
4624 abfd
->link
.hash
= NULL
;
4625 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
4626 elf32_mn10300_link_hash_newfunc
,
4627 sizeof (struct elf32_mn10300_link_hash_entry
),
4630 abfd
->is_linker_output
= TRUE
;
4631 abfd
->link
.hash
= &ret
->static_hash_table
->root
.root
;
4632 _bfd_elf_link_hash_table_free (abfd
);
4636 ret
->root
.root
.hash_table_free
= elf32_mn10300_link_hash_table_free
;
4638 ret
->tls_ldm_got
.offset
= -1;
4640 return & ret
->root
.root
;
4643 static unsigned long
4644 elf_mn10300_mach (flagword flags
)
4646 switch (flags
& EF_MN10300_MACH
)
4648 case E_MN10300_MACH_MN10300
:
4650 return bfd_mach_mn10300
;
4652 case E_MN10300_MACH_AM33
:
4653 return bfd_mach_am33
;
4655 case E_MN10300_MACH_AM33_2
:
4656 return bfd_mach_am33_2
;
4660 /* The final processing done just before writing out a MN10300 ELF object
4661 file. This gets the MN10300 architecture right based on the machine
4665 _bfd_mn10300_elf_final_write_processing (bfd
*abfd
)
4669 switch (bfd_get_mach (abfd
))
4672 case bfd_mach_mn10300
:
4673 val
= E_MN10300_MACH_MN10300
;
4677 val
= E_MN10300_MACH_AM33
;
4680 case bfd_mach_am33_2
:
4681 val
= E_MN10300_MACH_AM33_2
;
4685 elf_elfheader (abfd
)->e_flags
&= ~ (EF_MN10300_MACH
);
4686 elf_elfheader (abfd
)->e_flags
|= val
;
4687 return _bfd_elf_final_write_processing (abfd
);
4691 _bfd_mn10300_elf_object_p (bfd
*abfd
)
4693 bfd_default_set_arch_mach (abfd
, bfd_arch_mn10300
,
4694 elf_mn10300_mach (elf_elfheader (abfd
)->e_flags
));
4698 /* Merge backend specific data from an object file to the output
4699 object file when linking. */
4702 _bfd_mn10300_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
4704 bfd
*obfd
= info
->output_bfd
;
4706 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
4707 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
4710 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
4711 && bfd_get_mach (obfd
) < bfd_get_mach (ibfd
))
4713 if (! bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
4714 bfd_get_mach (ibfd
)))
4721 #define PLT0_ENTRY_SIZE 15
4722 #define PLT_ENTRY_SIZE 20
4723 #define PIC_PLT_ENTRY_SIZE 24
4725 static const bfd_byte elf_mn10300_plt0_entry
[PLT0_ENTRY_SIZE
] =
4727 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */
4728 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */
4729 0xf0, 0xf4, /* jmp (a0) */
4732 static const bfd_byte elf_mn10300_plt_entry
[PLT_ENTRY_SIZE
] =
4734 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */
4735 0xf0, 0xf4, /* jmp (a0) */
4736 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
4737 0xdc, 0, 0, 0, 0, /* jmp .plt0 */
4740 static const bfd_byte elf_mn10300_pic_plt_entry
[PIC_PLT_ENTRY_SIZE
] =
4742 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */
4743 0xf0, 0xf4, /* jmp (a0) */
4744 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
4745 0xf8, 0x22, 8, /* mov (8,a2),a0 */
4746 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */
4747 0xf0, 0xf4, /* jmp (a0) */
4750 /* Return size of the first PLT entry. */
4751 #define elf_mn10300_sizeof_plt0(info) \
4752 (bfd_link_pic (info) ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE)
4754 /* Return size of a PLT entry. */
4755 #define elf_mn10300_sizeof_plt(info) \
4756 (bfd_link_pic (info) ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE)
4758 /* Return offset of the PLT0 address in an absolute PLT entry. */
4759 #define elf_mn10300_plt_plt0_offset(info) 16
4761 /* Return offset of the linker in PLT0 entry. */
4762 #define elf_mn10300_plt0_linker_offset(info) 2
4764 /* Return offset of the GOT id in PLT0 entry. */
4765 #define elf_mn10300_plt0_gotid_offset(info) 9
4767 /* Return offset of the temporary in PLT entry. */
4768 #define elf_mn10300_plt_temp_offset(info) 8
4770 /* Return offset of the symbol in PLT entry. */
4771 #define elf_mn10300_plt_symbol_offset(info) 2
4773 /* Return offset of the relocation in PLT entry. */
4774 #define elf_mn10300_plt_reloc_offset(info) 11
4776 /* The name of the dynamic interpreter. This is put in the .interp
4779 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
4781 /* Create dynamic sections when linking against a dynamic object. */
4784 _bfd_mn10300_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
4788 const struct elf_backend_data
* bed
= get_elf_backend_data (abfd
);
4789 struct elf32_mn10300_link_hash_table
*htab
= elf32_mn10300_hash_table (info
);
4792 switch (bed
->s
->arch_size
)
4803 bfd_set_error (bfd_error_bad_value
);
4807 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
4808 .rel[a].bss sections. */
4809 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4810 | SEC_LINKER_CREATED
);
4812 s
= bfd_make_section_anyway_with_flags (abfd
,
4813 (bed
->default_use_rela_p
4814 ? ".rela.plt" : ".rel.plt"),
4815 flags
| SEC_READONLY
);
4816 htab
->root
.srelplt
= s
;
4818 || !bfd_set_section_alignment (s
, ptralign
))
4821 if (! _bfd_mn10300_elf_create_got_section (abfd
, info
))
4824 if (bed
->want_dynbss
)
4826 /* The .dynbss section is a place to put symbols which are defined
4827 by dynamic objects, are referenced by regular objects, and are
4828 not functions. We must allocate space for them in the process
4829 image and use a R_*_COPY reloc to tell the dynamic linker to
4830 initialize them at run time. The linker script puts the .dynbss
4831 section into the .bss section of the final image. */
4832 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynbss",
4833 SEC_ALLOC
| SEC_LINKER_CREATED
);
4837 /* The .rel[a].bss section holds copy relocs. This section is not
4838 normally needed. We need to create it here, though, so that the
4839 linker will map it to an output section. We can't just create it
4840 only if we need it, because we will not know whether we need it
4841 until we have seen all the input files, and the first time the
4842 main linker code calls BFD after examining all the input files
4843 (size_dynamic_sections) the input sections have already been
4844 mapped to the output sections. If the section turns out not to
4845 be needed, we can discard it later. We will never need this
4846 section when generating a shared object, since they do not use
4848 if (! bfd_link_pic (info
))
4850 s
= bfd_make_section_anyway_with_flags (abfd
,
4851 (bed
->default_use_rela_p
4852 ? ".rela.bss" : ".rel.bss"),
4853 flags
| SEC_READONLY
);
4855 || !bfd_set_section_alignment (s
, ptralign
))
4863 /* Adjust a symbol defined by a dynamic object and referenced by a
4864 regular object. The current definition is in some section of the
4865 dynamic object, but we're not including those sections. We have to
4866 change the definition to something the rest of the link can
4870 _bfd_mn10300_elf_adjust_dynamic_symbol (struct bfd_link_info
* info
,
4871 struct elf_link_hash_entry
* h
)
4873 struct elf32_mn10300_link_hash_table
*htab
= elf32_mn10300_hash_table (info
);
4877 dynobj
= htab
->root
.dynobj
;
4879 /* Make sure we know what is going on here. */
4880 BFD_ASSERT (dynobj
!= NULL
4885 && !h
->def_regular
)));
4887 /* If this is a function, put it in the procedure linkage table. We
4888 will fill in the contents of the procedure linkage table later,
4889 when we know the address of the .got section. */
4890 if (h
->type
== STT_FUNC
4893 if (! bfd_link_pic (info
)
4897 /* This case can occur if we saw a PLT reloc in an input
4898 file, but the symbol was never referred to by a dynamic
4899 object. In such a case, we don't actually need to build
4900 a procedure linkage table, and we can just do a REL32
4902 BFD_ASSERT (h
->needs_plt
);
4906 /* Make sure this symbol is output as a dynamic symbol. */
4907 if (h
->dynindx
== -1)
4909 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
4913 s
= htab
->root
.splt
;
4914 BFD_ASSERT (s
!= NULL
);
4916 /* If this is the first .plt entry, make room for the special
4919 s
->size
+= elf_mn10300_sizeof_plt0 (info
);
4921 /* If this symbol is not defined in a regular file, and we are
4922 not generating a shared library, then set the symbol to this
4923 location in the .plt. This is required to make function
4924 pointers compare as equal between the normal executable and
4925 the shared library. */
4926 if (! bfd_link_pic (info
)
4929 h
->root
.u
.def
.section
= s
;
4930 h
->root
.u
.def
.value
= s
->size
;
4933 h
->plt
.offset
= s
->size
;
4935 /* Make room for this entry. */
4936 s
->size
+= elf_mn10300_sizeof_plt (info
);
4938 /* We also need to make an entry in the .got.plt section, which
4939 will be placed in the .got section by the linker script. */
4940 s
= htab
->root
.sgotplt
;
4941 BFD_ASSERT (s
!= NULL
);
4944 /* We also need to make an entry in the .rela.plt section. */
4945 s
= htab
->root
.srelplt
;
4946 BFD_ASSERT (s
!= NULL
);
4947 s
->size
+= sizeof (Elf32_External_Rela
);
4952 /* If this is a weak symbol, and there is a real definition, the
4953 processor independent code will have arranged for us to see the
4954 real definition first, and we can just use the same value. */
4955 if (h
->is_weakalias
)
4957 struct elf_link_hash_entry
*def
= weakdef (h
);
4958 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
4959 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
4960 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
4964 /* This is a reference to a symbol defined by a dynamic object which
4965 is not a function. */
4967 /* If we are creating a shared library, we must presume that the
4968 only references to the symbol are via the global offset table.
4969 For such cases we need not do anything here; the relocations will
4970 be handled correctly by relocate_section. */
4971 if (bfd_link_pic (info
))
4974 /* If there are no references to this symbol that do not use the
4975 GOT, we don't need to generate a copy reloc. */
4976 if (!h
->non_got_ref
)
4979 /* We must allocate the symbol in our .dynbss section, which will
4980 become part of the .bss section of the executable. There will be
4981 an entry for this symbol in the .dynsym section. The dynamic
4982 object will contain position independent code, so all references
4983 from the dynamic object to this symbol will go through the global
4984 offset table. The dynamic linker will use the .dynsym entry to
4985 determine the address it must put in the global offset table, so
4986 both the dynamic object and the regular object will refer to the
4987 same memory location for the variable. */
4989 s
= bfd_get_linker_section (dynobj
, ".dynbss");
4990 BFD_ASSERT (s
!= NULL
);
4992 /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to
4993 copy the initial value out of the dynamic object and into the
4994 runtime process image. We need to remember the offset into the
4995 .rela.bss section we are going to use. */
4996 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
5000 srel
= bfd_get_linker_section (dynobj
, ".rela.bss");
5001 BFD_ASSERT (srel
!= NULL
);
5002 srel
->size
+= sizeof (Elf32_External_Rela
);
5006 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
5009 /* Set the sizes of the dynamic sections. */
5012 _bfd_mn10300_elf_size_dynamic_sections (bfd
* output_bfd
,
5013 struct bfd_link_info
* info
)
5015 struct elf32_mn10300_link_hash_table
*htab
= elf32_mn10300_hash_table (info
);
5020 dynobj
= htab
->root
.dynobj
;
5021 BFD_ASSERT (dynobj
!= NULL
);
5023 if (elf_hash_table (info
)->dynamic_sections_created
)
5025 /* Set the contents of the .interp section to the interpreter. */
5026 if (bfd_link_executable (info
) && !info
->nointerp
)
5028 s
= bfd_get_linker_section (dynobj
, ".interp");
5029 BFD_ASSERT (s
!= NULL
);
5030 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
5031 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
5036 /* We may have created entries in the .rela.got section.
5037 However, if we are not creating the dynamic sections, we will
5038 not actually use these entries. Reset the size of .rela.got,
5039 which will cause it to get stripped from the output file
5041 s
= htab
->root
.sgot
;
5046 if (htab
->tls_ldm_got
.refcount
> 0)
5048 s
= htab
->root
.srelgot
;
5049 BFD_ASSERT (s
!= NULL
);
5050 s
->size
+= sizeof (Elf32_External_Rela
);
5053 /* The check_relocs and adjust_dynamic_symbol entry points have
5054 determined the sizes of the various dynamic sections. Allocate
5057 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
5061 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
5064 /* It's OK to base decisions on the section name, because none
5065 of the dynobj section names depend upon the input files. */
5066 name
= bfd_section_name (s
);
5068 if (streq (name
, ".plt"))
5070 /* Remember whether there is a PLT. */
5073 else if (CONST_STRNEQ (name
, ".rela"))
5077 /* Remember whether there are any reloc sections other
5079 if (! streq (name
, ".rela.plt"))
5082 /* We use the reloc_count field as a counter if we need
5083 to copy relocs into the output file. */
5087 else if (! CONST_STRNEQ (name
, ".got")
5088 && ! streq (name
, ".dynbss"))
5089 /* It's not one of our sections, so don't allocate space. */
5094 /* If we don't need this section, strip it from the
5095 output file. This is mostly to handle .rela.bss and
5096 .rela.plt. We must create both sections in
5097 create_dynamic_sections, because they must be created
5098 before the linker maps input sections to output
5099 sections. The linker does that before
5100 adjust_dynamic_symbol is called, and it is that
5101 function which decides whether anything needs to go
5102 into these sections. */
5103 s
->flags
|= SEC_EXCLUDE
;
5107 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
5110 /* Allocate memory for the section contents. We use bfd_zalloc
5111 here in case unused entries are not reclaimed before the
5112 section's contents are written out. This should not happen,
5113 but this way if it does, we get a R_MN10300_NONE reloc
5114 instead of garbage. */
5115 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
5116 if (s
->contents
== NULL
)
5120 return _bfd_elf_add_dynamic_tags (output_bfd
, info
, relocs
);
5123 /* Finish up dynamic symbol handling. We set the contents of various
5124 dynamic sections here. */
5127 _bfd_mn10300_elf_finish_dynamic_symbol (bfd
* output_bfd
,
5128 struct bfd_link_info
* info
,
5129 struct elf_link_hash_entry
* h
,
5130 Elf_Internal_Sym
* sym
)
5132 struct elf32_mn10300_link_hash_table
*htab
= elf32_mn10300_hash_table (info
);
5135 dynobj
= htab
->root
.dynobj
;
5137 if (h
->plt
.offset
!= (bfd_vma
) -1)
5144 Elf_Internal_Rela rel
;
5146 /* This symbol has an entry in the procedure linkage table. Set
5149 BFD_ASSERT (h
->dynindx
!= -1);
5151 splt
= htab
->root
.splt
;
5152 sgot
= htab
->root
.sgotplt
;
5153 srel
= htab
->root
.srelplt
;
5154 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srel
!= NULL
);
5156 /* Get the index in the procedure linkage table which
5157 corresponds to this symbol. This is the index of this symbol
5158 in all the symbols for which we are making plt entries. The
5159 first entry in the procedure linkage table is reserved. */
5160 plt_index
= ((h
->plt
.offset
- elf_mn10300_sizeof_plt0 (info
))
5161 / elf_mn10300_sizeof_plt (info
));
5163 /* Get the offset into the .got table of the entry that
5164 corresponds to this function. Each .got entry is 4 bytes.
5165 The first three are reserved. */
5166 got_offset
= (plt_index
+ 3) * 4;
5168 /* Fill in the entry in the procedure linkage table. */
5169 if (! bfd_link_pic (info
))
5171 memcpy (splt
->contents
+ h
->plt
.offset
, elf_mn10300_plt_entry
,
5172 elf_mn10300_sizeof_plt (info
));
5173 bfd_put_32 (output_bfd
,
5174 (sgot
->output_section
->vma
5175 + sgot
->output_offset
5177 (splt
->contents
+ h
->plt
.offset
5178 + elf_mn10300_plt_symbol_offset (info
)));
5180 bfd_put_32 (output_bfd
,
5181 (1 - h
->plt
.offset
- elf_mn10300_plt_plt0_offset (info
)),
5182 (splt
->contents
+ h
->plt
.offset
5183 + elf_mn10300_plt_plt0_offset (info
)));
5187 memcpy (splt
->contents
+ h
->plt
.offset
, elf_mn10300_pic_plt_entry
,
5188 elf_mn10300_sizeof_plt (info
));
5190 bfd_put_32 (output_bfd
, got_offset
,
5191 (splt
->contents
+ h
->plt
.offset
5192 + elf_mn10300_plt_symbol_offset (info
)));
5195 bfd_put_32 (output_bfd
, plt_index
* sizeof (Elf32_External_Rela
),
5196 (splt
->contents
+ h
->plt
.offset
5197 + elf_mn10300_plt_reloc_offset (info
)));
5199 /* Fill in the entry in the global offset table. */
5200 bfd_put_32 (output_bfd
,
5201 (splt
->output_section
->vma
5202 + splt
->output_offset
5204 + elf_mn10300_plt_temp_offset (info
)),
5205 sgot
->contents
+ got_offset
);
5207 /* Fill in the entry in the .rela.plt section. */
5208 rel
.r_offset
= (sgot
->output_section
->vma
5209 + sgot
->output_offset
5211 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_MN10300_JMP_SLOT
);
5213 bfd_elf32_swap_reloca_out (output_bfd
, &rel
,
5214 (bfd_byte
*) ((Elf32_External_Rela
*) srel
->contents
5217 if (!h
->def_regular
)
5218 /* Mark the symbol as undefined, rather than as defined in
5219 the .plt section. Leave the value alone. */
5220 sym
->st_shndx
= SHN_UNDEF
;
5223 if (h
->got
.offset
!= (bfd_vma
) -1)
5227 Elf_Internal_Rela rel
;
5229 /* This symbol has an entry in the global offset table. Set it up. */
5230 sgot
= htab
->root
.sgot
;
5231 srel
= htab
->root
.srelgot
;
5232 BFD_ASSERT (sgot
!= NULL
&& srel
!= NULL
);
5234 rel
.r_offset
= (sgot
->output_section
->vma
5235 + sgot
->output_offset
5236 + (h
->got
.offset
& ~1));
5238 switch (elf_mn10300_hash_entry (h
)->tls_type
)
5241 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
5242 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
+ 4);
5243 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_MN10300_TLS_DTPMOD
);
5245 bfd_elf32_swap_reloca_out (output_bfd
, & rel
,
5246 (bfd_byte
*) ((Elf32_External_Rela
*) srel
->contents
5247 + srel
->reloc_count
));
5248 ++ srel
->reloc_count
;
5249 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_MN10300_TLS_DTPOFF
);
5255 /* We originally stored the addend in the GOT, but at this
5256 point, we want to move it to the reloc instead as that's
5257 where the dynamic linker wants it. */
5258 rel
.r_addend
= bfd_get_32 (output_bfd
, sgot
->contents
+ h
->got
.offset
);
5259 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
5260 if (h
->dynindx
== -1)
5261 rel
.r_info
= ELF32_R_INFO (0, R_MN10300_TLS_TPOFF
);
5263 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_MN10300_TLS_TPOFF
);
5267 /* If this is a -Bsymbolic link, and the symbol is defined
5268 locally, we just want to emit a RELATIVE reloc. Likewise if
5269 the symbol was forced to be local because of a version file.
5270 The entry in the global offset table will already have been
5271 initialized in the relocate_section function. */
5272 if (bfd_link_pic (info
)
5273 && (info
->symbolic
|| h
->dynindx
== -1)
5276 rel
.r_info
= ELF32_R_INFO (0, R_MN10300_RELATIVE
);
5277 rel
.r_addend
= (h
->root
.u
.def
.value
5278 + h
->root
.u
.def
.section
->output_section
->vma
5279 + h
->root
.u
.def
.section
->output_offset
);
5283 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
5284 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_MN10300_GLOB_DAT
);
5289 if (ELF32_R_TYPE (rel
.r_info
) != R_MN10300_NONE
)
5291 bfd_elf32_swap_reloca_out (output_bfd
, &rel
,
5292 (bfd_byte
*) ((Elf32_External_Rela
*) srel
->contents
5293 + srel
->reloc_count
));
5294 ++ srel
->reloc_count
;
5301 Elf_Internal_Rela rel
;
5303 /* This symbol needs a copy reloc. Set it up. */
5304 BFD_ASSERT (h
->dynindx
!= -1
5305 && (h
->root
.type
== bfd_link_hash_defined
5306 || h
->root
.type
== bfd_link_hash_defweak
));
5308 s
= bfd_get_linker_section (dynobj
, ".rela.bss");
5309 BFD_ASSERT (s
!= NULL
);
5311 rel
.r_offset
= (h
->root
.u
.def
.value
5312 + h
->root
.u
.def
.section
->output_section
->vma
5313 + h
->root
.u
.def
.section
->output_offset
);
5314 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_MN10300_COPY
);
5316 bfd_elf32_swap_reloca_out (output_bfd
, & rel
,
5317 (bfd_byte
*) ((Elf32_External_Rela
*) s
->contents
5322 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
5323 if (h
== elf_hash_table (info
)->hdynamic
5324 || h
== elf_hash_table (info
)->hgot
)
5325 sym
->st_shndx
= SHN_ABS
;
5330 /* Finish up the dynamic sections. */
5333 _bfd_mn10300_elf_finish_dynamic_sections (bfd
* output_bfd
,
5334 struct bfd_link_info
* info
)
5339 struct elf32_mn10300_link_hash_table
*htab
= elf32_mn10300_hash_table (info
);
5341 dynobj
= htab
->root
.dynobj
;
5342 sgot
= htab
->root
.sgotplt
;
5343 BFD_ASSERT (sgot
!= NULL
);
5344 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
5346 if (elf_hash_table (info
)->dynamic_sections_created
)
5349 Elf32_External_Dyn
* dyncon
;
5350 Elf32_External_Dyn
* dynconend
;
5352 BFD_ASSERT (sdyn
!= NULL
);
5354 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
5355 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
5357 for (; dyncon
< dynconend
; dyncon
++)
5359 Elf_Internal_Dyn dyn
;
5362 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
5370 s
= htab
->root
.sgot
;
5374 s
= htab
->root
.srelplt
;
5376 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
5377 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
5381 s
= htab
->root
.srelplt
;
5382 dyn
.d_un
.d_val
= s
->size
;
5383 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
5388 /* Fill in the first entry in the procedure linkage table. */
5389 splt
= htab
->root
.splt
;
5390 if (splt
&& splt
->size
> 0)
5392 if (bfd_link_pic (info
))
5394 memcpy (splt
->contents
, elf_mn10300_pic_plt_entry
,
5395 elf_mn10300_sizeof_plt (info
));
5399 memcpy (splt
->contents
, elf_mn10300_plt0_entry
, PLT0_ENTRY_SIZE
);
5400 bfd_put_32 (output_bfd
,
5401 sgot
->output_section
->vma
+ sgot
->output_offset
+ 4,
5402 splt
->contents
+ elf_mn10300_plt0_gotid_offset (info
));
5403 bfd_put_32 (output_bfd
,
5404 sgot
->output_section
->vma
+ sgot
->output_offset
+ 8,
5405 splt
->contents
+ elf_mn10300_plt0_linker_offset (info
));
5408 /* UnixWare sets the entsize of .plt to 4, although that doesn't
5409 really seem like the right value. */
5410 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
5412 /* UnixWare sets the entsize of .plt to 4, but this is incorrect
5413 as it means that the size of the PLT0 section (15 bytes) is not
5414 a multiple of the sh_entsize. Some ELF tools flag this as an
5415 error. We could pad PLT0 to 16 bytes, but that would introduce
5416 compatibilty issues with previous toolchains, so instead we
5417 just set the entry size to 1. */
5418 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 1;
5422 /* Fill in the first three entries in the global offset table. */
5426 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
5428 bfd_put_32 (output_bfd
,
5429 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
5431 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
5432 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
5435 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
5440 /* Classify relocation types, such that combreloc can sort them
5443 static enum elf_reloc_type_class
5444 _bfd_mn10300_elf_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
5445 const asection
*rel_sec ATTRIBUTE_UNUSED
,
5446 const Elf_Internal_Rela
*rela
)
5448 switch ((int) ELF32_R_TYPE (rela
->r_info
))
5450 case R_MN10300_RELATIVE
: return reloc_class_relative
;
5451 case R_MN10300_JMP_SLOT
: return reloc_class_plt
;
5452 case R_MN10300_COPY
: return reloc_class_copy
;
5453 default: return reloc_class_normal
;
5457 /* Allocate space for an MN10300 extension to the bfd elf data structure. */
5460 mn10300_elf_mkobject (bfd
*abfd
)
5462 return bfd_elf_allocate_object (abfd
, sizeof (struct elf_mn10300_obj_tdata
),
5466 #define bfd_elf32_mkobject mn10300_elf_mkobject
5469 #define TARGET_LITTLE_SYM mn10300_elf32_vec
5470 #define TARGET_LITTLE_NAME "elf32-mn10300"
5471 #define ELF_ARCH bfd_arch_mn10300
5472 #define ELF_TARGET_ID MN10300_ELF_DATA
5473 #define ELF_MACHINE_CODE EM_MN10300
5474 #define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300
5475 #define ELF_MAXPAGESIZE 0x1000
5478 #define elf_info_to_howto mn10300_info_to_howto
5479 #define elf_info_to_howto_rel NULL
5480 #define elf_backend_can_gc_sections 1
5481 #define elf_backend_rela_normal 1
5482 #define elf_backend_check_relocs mn10300_elf_check_relocs
5483 #define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook
5484 #define elf_backend_relocate_section mn10300_elf_relocate_section
5485 #define bfd_elf32_bfd_relax_section mn10300_elf_relax_section
5486 #define bfd_elf32_bfd_get_relocated_section_contents \
5487 mn10300_elf_get_relocated_section_contents
5488 #define bfd_elf32_bfd_link_hash_table_create \
5489 elf32_mn10300_link_hash_table_create
5491 #ifndef elf_symbol_leading_char
5492 #define elf_symbol_leading_char '_'
5495 /* So we can set bits in e_flags. */
5496 #define elf_backend_final_write_processing \
5497 _bfd_mn10300_elf_final_write_processing
5498 #define elf_backend_object_p _bfd_mn10300_elf_object_p
5500 #define bfd_elf32_bfd_merge_private_bfd_data \
5501 _bfd_mn10300_elf_merge_private_bfd_data
5503 #define elf_backend_can_gc_sections 1
5504 #define elf_backend_create_dynamic_sections \
5505 _bfd_mn10300_elf_create_dynamic_sections
5506 #define elf_backend_adjust_dynamic_symbol \
5507 _bfd_mn10300_elf_adjust_dynamic_symbol
5508 #define elf_backend_size_dynamic_sections \
5509 _bfd_mn10300_elf_size_dynamic_sections
5510 #define elf_backend_omit_section_dynsym _bfd_elf_omit_section_dynsym_all
5511 #define elf_backend_finish_dynamic_symbol \
5512 _bfd_mn10300_elf_finish_dynamic_symbol
5513 #define elf_backend_finish_dynamic_sections \
5514 _bfd_mn10300_elf_finish_dynamic_sections
5515 #define elf_backend_copy_indirect_symbol \
5516 _bfd_mn10300_copy_indirect_symbol
5517 #define elf_backend_reloc_type_class \
5518 _bfd_mn10300_elf_reloc_type_class
5520 #define elf_backend_want_got_plt 1
5521 #define elf_backend_plt_readonly 1
5522 #define elf_backend_want_plt_sym 0
5523 #define elf_backend_got_header_size 12
5524 #define elf_backend_dtrel_excludes_plt 1
5526 #include "elf32-target.h"