1 /* BFD back-end for ARM COFF files.
2 Copyright 1990, 91, 92, 93, 94, 95, 96, 1997 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
27 #include "coff/internal.h"
35 #define APCS_26_FLAG( abfd ) (coff_data (abfd)->flags & F_APCS_26)
36 #define APCS_FLOAT_FLAG( abfd ) (coff_data (abfd)->flags & F_APCS_FLOAT)
37 #define PIC_FLAG( abfd ) (coff_data (abfd)->flags & F_PIC)
38 #define APCS_SET( abfd ) (coff_data (abfd)->flags & F_APCS_SET)
39 #define SET_APCS_FLAGS( abfd, flgs) (coff_data (abfd)->flags = \
40 (coff_data (abfd)->flags & ~ (F_APCS_26 | F_APCS_FLOAT | F_PIC)) \
41 | (flgs | F_APCS_SET))
42 #define INTERWORK_FLAG( abfd ) (coff_data (abfd)->flags & F_INTERWORK)
43 #define INTERWORK_SET( abfd ) (coff_data (abfd)->flags & F_INTERWORK_SET)
44 #define SET_INTERWORK_FLAG( abfd, flg ) (coff_data (abfd)->flags = \
45 (coff_data (abfd)->flags & ~ F_INTERWORK) \
46 | (flg | F_INTERWORK_SET))
49 static boolean coff_arm_relocate_section
50 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
51 struct internal_reloc
*, struct internal_syment
*, asection
**));
53 static bfd_reloc_status_type
54 aoutarm_fix_pcrel_26_done
PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
,
55 asection
*, bfd
*, char **));
57 static bfd_reloc_status_type
58 aoutarm_fix_pcrel_26
PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
,
59 asection
*, bfd
*, char **));
61 static bfd_reloc_status_type
62 coff_thumb_pcrel_23
PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
,
63 asection
*, bfd
*, char **));
65 static bfd_reloc_status_type
66 coff_thumb_pcrel_12
PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
,
67 asection
*, bfd
*, char **));
69 static bfd_reloc_status_type
70 coff_thumb_pcrel_9
PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
,
71 asection
*, bfd
*, char **));
73 static bfd_reloc_status_type
74 coff_arm_reloc
PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*,
78 coff_arm_adjust_symndx
PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*,
79 asection
*, struct internal_reloc
*,
82 /* The linker script knows the section names for placement.
83 The entry_names are used to do simple name mangling on the stubs.
84 Given a function name, and its type, the stub can be found. The
85 name can be changed. The only requirement is the %s be present.
88 #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
89 #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
91 #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
92 #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
94 /* Used by the assembler. */
95 static bfd_reloc_status_type
96 coff_arm_reloc (abfd
, reloc_entry
, symbol
, data
, input_section
, output_bfd
,
102 asection
*input_section
;
104 char **error_message
;
107 if (output_bfd
== (bfd
*) NULL
)
108 return bfd_reloc_continue
;
110 diff
= reloc_entry
->addend
;
113 x = ((x & ~howto->dst_mask) | (((x & howto->src_mask) + diff) & howto->dst_mask))
117 reloc_howto_type
*howto
= reloc_entry
->howto
;
118 unsigned char *addr
= (unsigned char *) data
+ reloc_entry
->address
;
124 char x
= bfd_get_8 (abfd
, addr
);
126 bfd_put_8 (abfd
, x
, addr
);
132 short x
= bfd_get_16 (abfd
, addr
);
134 bfd_put_16 (abfd
, x
, addr
);
140 long x
= bfd_get_32 (abfd
, addr
);
142 bfd_put_32 (abfd
, x
, addr
);
151 /* Now let bfd_perform_relocation finish everything up. */
152 return bfd_reloc_continue
;
155 #define TARGET_UNDERSCORE '_'
158 #define PCRELOFFSET true
161 /* These most certainly belong somewhere else. Just had to get rid of
162 the manifest constants in the code. */
176 #define ARM_THUMB9 12
177 #define ARM_THUMB12 13
178 #define ARM_THUMB23 14
180 static reloc_howto_type aoutarm_std_reloc_howto
[] =
182 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */
183 HOWTO(ARM_8
, /* type */
187 false, /* pc_relative */
189 complain_overflow_bitfield
, /* complain_on_overflow */
190 coff_arm_reloc
, /* special_function */
192 true, /* partial_inplace */
193 0x000000ff, /* src_mask */
194 0x000000ff, /* dst_mask */
195 PCRELOFFSET
/* pcrel_offset */),
202 complain_overflow_bitfield
,
215 complain_overflow_bitfield
,
228 complain_overflow_signed
,
229 aoutarm_fix_pcrel_26
,
241 complain_overflow_signed
,
254 complain_overflow_signed
,
267 complain_overflow_signed
,
280 complain_overflow_signed
,
281 aoutarm_fix_pcrel_26_done
,
295 complain_overflow_bitfield
,
308 complain_overflow_bitfield
,
321 complain_overflow_bitfield
,
334 complain_overflow_signed
,
347 complain_overflow_signed
,
348 coff_thumb_pcrel_12
,
360 complain_overflow_signed
,
361 coff_thumb_pcrel_23
,
369 /* Return true if this relocation should
370 appear in the output .reloc section. */
372 static boolean
in_reloc_p (abfd
, howto
)
374 reloc_howto_type
*howto
;
376 return !howto
->pc_relative
&& howto
->type
!= 11;
381 #define RTYPE2HOWTO(cache_ptr, dst) \
382 (cache_ptr)->howto = aoutarm_std_reloc_howto + (dst)->r_type;
384 #define coff_rtype_to_howto coff_arm_rtype_to_howto
386 static reloc_howto_type
*
387 coff_arm_rtype_to_howto (abfd
, sec
, rel
, h
, sym
, addendp
)
390 struct internal_reloc
*rel
;
391 struct coff_link_hash_entry
*h
;
392 struct internal_syment
*sym
;
395 reloc_howto_type
*howto
;
397 howto
= aoutarm_std_reloc_howto
+ rel
->r_type
;
399 if (rel
->r_type
== ARM_RVA32
)
401 *addendp
-= pe_data(sec
->output_section
->owner
)->pe_opthdr
.ImageBase
;
404 /* The relocation_section function will skip pcrel_offset relocs
405 when doing a relocateable link. However, we want to convert
406 ARM26 to ARM26D relocs if possible. We return a fake howto in
407 this case without pcrel_offset set, and adjust the addend to
409 if (rel
->r_type
== ARM_26
411 && (h
->root
.type
== bfd_link_hash_defined
412 || h
->root
.type
== bfd_link_hash_defweak
)
413 && h
->root
.u
.def
.section
->output_section
== sec
->output_section
)
415 static reloc_howto_type fake_arm26_reloc
=
422 complain_overflow_signed
,
423 aoutarm_fix_pcrel_26
,
430 *addendp
-= rel
->r_vaddr
- sec
->vma
;
431 return & fake_arm26_reloc
;
437 /* Used by the assembler. */
439 static bfd_reloc_status_type
440 aoutarm_fix_pcrel_26_done (abfd
, reloc_entry
, symbol
, data
, input_section
,
441 output_bfd
, error_message
)
443 arelent
*reloc_entry
;
446 asection
*input_section
;
448 char **error_message
;
450 /* This is dead simple at present. */
454 /* Used by the assembler. */
456 static bfd_reloc_status_type
457 aoutarm_fix_pcrel_26 (abfd
, reloc_entry
, symbol
, data
, input_section
,
458 output_bfd
, error_message
)
460 arelent
*reloc_entry
;
463 asection
*input_section
;
465 char **error_message
;
468 bfd_size_type addr
= reloc_entry
->address
;
469 long target
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ addr
);
470 bfd_reloc_status_type flag
= bfd_reloc_ok
;
472 /* If this is an undefined symbol, return error */
473 if (symbol
->section
== &bfd_und_section
474 && (symbol
->flags
& BSF_WEAK
) == 0)
475 return output_bfd
? bfd_reloc_continue
: bfd_reloc_undefined
;
477 /* If the sections are different, and we are doing a partial relocation,
478 just ignore it for now. */
479 if (symbol
->section
->name
!= input_section
->name
480 && output_bfd
!= (bfd
*)NULL
)
481 return bfd_reloc_continue
;
483 relocation
= (target
& 0x00ffffff) << 2;
484 relocation
= (relocation
^ 0x02000000) - 0x02000000; /* Sign extend */
485 relocation
+= symbol
->value
;
486 relocation
+= symbol
->section
->output_section
->vma
;
487 relocation
+= symbol
->section
->output_offset
;
488 relocation
+= reloc_entry
->addend
;
489 relocation
-= input_section
->output_section
->vma
;
490 relocation
-= input_section
->output_offset
;
494 return bfd_reloc_overflow
;
496 /* Check for overflow */
497 if (relocation
& 0x02000000)
499 if ((relocation
& ~0x03ffffff) != ~0x03ffffff)
500 flag
= bfd_reloc_overflow
;
502 else if (relocation
& ~0x03ffffff)
503 flag
= bfd_reloc_overflow
;
505 target
&= ~0x00ffffff;
506 target
|= (relocation
>> 2) & 0x00ffffff;
507 bfd_put_32 (abfd
, target
, (bfd_byte
*) data
+ addr
);
509 /* Now the ARM magic... Change the reloc type so that it is marked as done.
510 Strictly this is only necessary if we are doing a partial relocation. */
511 reloc_entry
->howto
= &aoutarm_std_reloc_howto
[ARM_26D
];
516 typedef enum {bunknown
, b9
, b12
, b23
} thumb_pcrel_branchtype
;
518 static bfd_reloc_status_type
519 coff_thumb_pcrel_common (abfd
, reloc_entry
, symbol
, data
, input_section
,
520 output_bfd
, error_message
, btype
)
522 arelent
*reloc_entry
;
525 asection
*input_section
;
527 char **error_message
;
528 thumb_pcrel_branchtype btype
;
531 bfd_size_type addr
= reloc_entry
->address
;
532 long target
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ addr
);
533 bfd_reloc_status_type flag
= bfd_reloc_ok
;
538 /* NOTE: This routine is currently used by GAS, but not by the link
546 signbit
= 0x00000100;
552 signbit
= 0x00000800;
558 signbit
= 0x00400000;
565 /* If this is an undefined symbol, return error */
566 if (symbol
->section
== &bfd_und_section
567 && (symbol
->flags
& BSF_WEAK
) == 0)
568 return output_bfd
? bfd_reloc_continue
: bfd_reloc_undefined
;
570 /* If the sections are different, and we are doing a partial relocation,
571 just ignore it for now. */
572 if (symbol
->section
->name
!= input_section
->name
573 && output_bfd
!= (bfd
*)NULL
)
574 return bfd_reloc_continue
;
580 relocation
= ((target
& dstmsk
) << 1);
584 if (bfd_big_endian (abfd
))
585 relocation
= ((target
& 0x7ff) << 1) | ((target
& 0x07ff0000) >> 4);
587 relocation
= ((target
& 0x7ff) << 12) | ((target
& 0x07ff0000) >> 15);
591 relocation
= (relocation
^ signbit
) - signbit
; /* Sign extend */
592 relocation
+= symbol
->value
;
593 relocation
+= symbol
->section
->output_section
->vma
;
594 relocation
+= symbol
->section
->output_offset
;
595 relocation
+= reloc_entry
->addend
;
596 relocation
-= input_section
->output_section
->vma
;
597 relocation
-= input_section
->output_offset
;
601 return bfd_reloc_overflow
;
603 /* Check for overflow */
604 if (relocation
& signbit
)
606 if ((relocation
& ~offmsk
) != ~offmsk
)
607 flag
= bfd_reloc_overflow
;
609 else if (relocation
& ~offmsk
)
610 flag
= bfd_reloc_overflow
;
617 target
|= (relocation
>> 1);
621 if (bfd_big_endian (abfd
))
622 target
|= ((relocation
& 0xfff) >> 1) | ((relocation
<< 4) & 0x07ff0000);
624 target
|= ((relocation
& 0xffe) << 15) | ((relocation
>> 12) & 0x7ff);
628 bfd_put_32 (abfd
, target
, (bfd_byte
*) data
+ addr
);
630 /* Now the ARM magic... Change the reloc type so that it is marked as done.
631 Strictly this is only necessary if we are doing a partial relocation. */
632 reloc_entry
->howto
= & aoutarm_std_reloc_howto
[ARM_26D
];
634 /* TODO: We should possibly have DONE entries for the THUMB PCREL relocations */
638 static bfd_reloc_status_type
639 coff_thumb_pcrel_23 (abfd
, reloc_entry
, symbol
, data
, input_section
,
640 output_bfd
, error_message
)
642 arelent
*reloc_entry
;
645 asection
*input_section
;
647 char **error_message
;
649 return coff_thumb_pcrel_common (abfd
, reloc_entry
, symbol
, data
,
650 input_section
, output_bfd
, error_message
, b23
);
653 static bfd_reloc_status_type
654 coff_thumb_pcrel_12 (abfd
, reloc_entry
, symbol
, data
, input_section
,
655 output_bfd
, error_message
)
657 arelent
*reloc_entry
;
660 asection
*input_section
;
662 char **error_message
;
664 return coff_thumb_pcrel_common (abfd
, reloc_entry
, symbol
, data
,
665 input_section
, output_bfd
, error_message
, b12
);
668 static bfd_reloc_status_type
669 coff_thumb_pcrel_9 (abfd
, reloc_entry
, symbol
, data
, input_section
,
670 output_bfd
, error_message
)
672 arelent
*reloc_entry
;
675 asection
*input_section
;
677 char **error_message
;
679 return coff_thumb_pcrel_common (abfd
, reloc_entry
, symbol
, data
,
680 input_section
, output_bfd
, error_message
, b9
);
684 static CONST
struct reloc_howto_struct
*
685 arm_reloc_type_lookup(abfd
,code
)
687 bfd_reloc_code_real_type code
;
689 #define ASTD(i,j) case i: return &aoutarm_std_reloc_howto[j]
690 if (code
== BFD_RELOC_CTOR
)
691 switch (bfd_get_arch_info (abfd
)->bits_per_address
)
696 default: return (CONST
struct reloc_howto_struct
*) 0;
701 ASTD (BFD_RELOC_8
, ARM_8
);
702 ASTD (BFD_RELOC_16
, ARM_16
);
703 ASTD (BFD_RELOC_32
, ARM_32
);
704 ASTD (BFD_RELOC_ARM_PCREL_BRANCH
, ARM_26
);
705 ASTD (BFD_RELOC_8_PCREL
, ARM_DISP8
);
706 ASTD (BFD_RELOC_16_PCREL
, ARM_DISP16
);
707 ASTD (BFD_RELOC_32_PCREL
, ARM_DISP32
);
708 ASTD (BFD_RELOC_RVA
, ARM_RVA32
);
709 ASTD (BFD_RELOC_THUMB_PCREL_BRANCH9
, ARM_THUMB9
);
710 ASTD (BFD_RELOC_THUMB_PCREL_BRANCH12
, ARM_THUMB12
);
711 ASTD (BFD_RELOC_THUMB_PCREL_BRANCH23
, ARM_THUMB23
);
712 default: return (CONST
struct reloc_howto_struct
*) 0;
717 #define coff_bfd_reloc_type_lookup arm_reloc_type_lookup
719 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
720 #define COFF_PAGE_SIZE 0x1000
721 /* Turn a howto into a reloc nunmber */
723 #define SELECT_RELOC(x,howto) { x.r_type = howto->type; }
724 #define BADMAG(x) ARMBADMAG(x)
725 #define ARM 1 /* Customize coffcode.h */
727 /* The set of global variables that mark the total size of each kind
729 static long int global_thumb_glue_size
= 0;
730 static long int global_arm_glue_size
= 0;
732 static bfd
* bfd_of_glue_owner
= 0;
734 /* some typedefs for holding instructions */
735 typedef unsigned long int insn32
;
736 typedef unsigned short int insn16
;
739 /* The thumb form of a long branch is a bit finicky, because the offset
740 encoding is split over two fields, each in it's own instruction. They
741 can occur in any order. So given a thumb form of long branch, and an
742 offset, insert the offset into the thumb branch and return finished
745 It takes two thumb instructions to encode the target address. Each has
746 11 bits to invest. The upper 11 bits are stored in one (identifed by
747 H-0.. see below), the lower 11 bits are stored in the other (identified
750 Combine together and shifted left by 1 (it's a half word address) and
754 H-0, upper address-0 = 000
756 H-1, lower address-0 = 800
758 They can be ordered either way, but the arm tools I've seen always put
759 the lower one first. It probably doesn't matter. krk@cygnus.com
761 XXX: Actually the order does matter. The second instruction (H-1)
762 moves the computed address into the PC, so it must be the second one
763 in the sequence. The problem, however is that whilst little endian code
764 stores the instructions in HI then LOW order, big endian code does the
765 reverse. nickc@cygnus.com */
767 #define LOW_HI_ORDER 0xF800F000
768 #define HI_LOW_ORDER 0xF000F800
771 insert_thumb_branch (br_insn
, rel_off
)
775 unsigned int low_bits
;
776 unsigned int high_bits
;
779 BFD_ASSERT((rel_off
& 1) != 1);
781 rel_off
>>= 1; /* half word aligned address */
782 low_bits
= rel_off
& 0x000007FF; /* the bottom 11 bits */
783 high_bits
= ( rel_off
>> 11 ) & 0x000007FF; /* the top 11 bits */
785 if ((br_insn
& LOW_HI_ORDER
) == LOW_HI_ORDER
)
786 br_insn
= LOW_HI_ORDER
| (low_bits
<< 16) | high_bits
;
787 else if ((br_insn
& HI_LOW_ORDER
) == HI_LOW_ORDER
)
788 br_insn
= HI_LOW_ORDER
| (high_bits
<< 16) | low_bits
;
790 abort(); /* error - not a valid branch instruction form */
792 /* FIXME: abort is probably not the right call. krk@cygnus.com */
798 static struct coff_link_hash_entry
*
799 find_thumb_glue (info
, name
, input_bfd
)
800 struct bfd_link_info
* info
;
806 struct coff_link_hash_entry
*myh
= 0;
809 bfd_malloc (strlen (name
) + strlen (THUMB2ARM_GLUE_ENTRY_NAME
)));
811 BFD_ASSERT (tmp_name
);
813 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
815 myh
= coff_link_hash_lookup (coff_hash_table (info
),
820 _bfd_error_handler ("%s: unable to find THUMB glue '%s' for `%s'",
821 bfd_get_filename (input_bfd
), tmp_name
, name
);
829 static struct coff_link_hash_entry
*
830 find_arm_glue (info
, name
, input_bfd
)
831 struct bfd_link_info
* info
;
836 struct coff_link_hash_entry
*myh
= 0;
839 bfd_malloc (strlen (name
) + strlen (ARM2THUMB_GLUE_ENTRY_NAME
)));
841 BFD_ASSERT (tmp_name
);
843 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
845 myh
= coff_link_hash_lookup (coff_hash_table (info
),
851 _bfd_error_handler ("%s: unable to find ARM glue '%s' for `%s'",
852 bfd_get_filename (input_bfd
), tmp_name
, name
);
868 .word func @ behave as if you saw a ARM_32 reloc
870 ldr ip,8 <__func_addr> e59fc000
876 #define ARM2THUMB_GLUE_SIZE 12
878 a2t1_ldr_insn
= 0xe59fc000,
879 a2t2_bx_r12_insn
= 0xe12fff1c,
880 a2t3_func_addr_insn
= 0x00000001;
891 __func_change_to_arm:
901 #define THUMB2ARM_GLUE_SIZE 8
903 t2a1_bx_pc_insn
= 0x4778,
904 t2a2_noop_insn
= 0x46c0;
906 t2a3_b_insn
= 0xea000000;
909 We should really create new local (static) symbols in destination
910 object for each stub we create. We should also create local
911 (static) symbols within the stubs when switching between ARM and
912 Thumb code. This will ensure that the debugger and disassembler
913 can present a better view of stubs.
915 We can treat stubs like literal sections, and for the THUMB9 ones
916 (short addressing range) we should be able to insert the stubs
917 between sections. i.e. the simplest approach (since relocations
918 are done on a section basis) is to dump the stubs at the end of
919 processing a section. That way we can always try and minimise the
920 offset to and from a stub. However, this does not map well onto
921 the way that the linker/BFD does its work: mapping all input
922 sections to output sections via the linker script before doing
925 Unfortunately it may be easier to just to disallow short range
926 Thumb->ARM stubs (i.e. no conditional inter-working branches,
927 only branch-and-link (BL) calls. This will simplify the processing
928 since we can then put all of the stubs into their own section.
931 On a different subject, rather than complaining when a
932 branch cannot fit in the number of bits available for the
933 instruction we should generate a trampoline stub (needed to
934 address the complete 32bit address space). */
936 /* The standard COFF backend linker does not cope with the special
937 Thumb BRANCH23 relocation. The alternative would be to split the
938 BRANCH23 into seperate HI23 and LO23 relocations. However, it is a
939 bit simpler simply providing our own relocation driver. */
941 /* The reloc processing routine for the ARM/Thumb COFF linker. NOTE:
942 This code is a very slightly modified copy of
943 _bfd_coff_generic_relocate_section. It would be a much more
944 maintainable solution to have a MACRO that could be expanded within
945 _bfd_coff_generic_relocate_section that would only be provided for
946 ARM/Thumb builds. It is only the code marked THUMBEXTENSION that
947 is different from the original. */
950 coff_arm_relocate_section (output_bfd
, info
, input_bfd
, input_section
,
951 contents
, relocs
, syms
, sections
)
953 struct bfd_link_info
*info
;
955 asection
*input_section
;
957 struct internal_reloc
*relocs
;
958 struct internal_syment
*syms
;
961 struct internal_reloc
*rel
;
962 struct internal_reloc
*relend
;
965 relend
= rel
+ input_section
->reloc_count
;
967 for (; rel
< relend
; rel
++)
971 struct coff_link_hash_entry
*h
;
972 struct internal_syment
*sym
;
975 reloc_howto_type
*howto
;
976 bfd_reloc_status_type rstat
;
979 symndx
= rel
->r_symndx
;
988 h
= obj_coff_sym_hashes (input_bfd
)[symndx
];
992 /* COFF treats common symbols in one of two ways. Either the
993 size of the symbol is included in the section contents, or it
994 is not. We assume that the size is not included, and force
995 the rtype_to_howto function to adjust the addend as needed. */
997 if (sym
!= NULL
&& sym
->n_scnum
!= 0)
998 addend
= - sym
->n_value
;
1003 howto
= bfd_coff_rtype_to_howto (input_bfd
, input_section
, rel
, h
,
1008 /* If we are doing a relocateable link, then we can just ignore
1009 a PC relative reloc that is pcrel_offset. It will already
1010 have the correct value. If this is not a relocateable link,
1011 then we should ignore the symbol value. */
1012 if (howto
->pc_relative
&& howto
->pcrel_offset
)
1014 if (info
->relocateable
)
1016 if (sym
!= NULL
&& sym
->n_scnum
!= 0)
1017 addend
+= sym
->n_value
;
1020 /* If we are doing a relocateable link, then we can just ignore
1021 a PC relative reloc that is pcrel_offset. It will already
1022 have the correct value. */
1023 if (info
->relocateable
1024 && howto
->pc_relative
1025 && howto
->pcrel_offset
)
1036 sec
= bfd_abs_section_ptr
;
1041 sec
= sections
[symndx
];
1042 val
= (sec
->output_section
->vma
1043 + sec
->output_offset
1050 #if 1 /* THUMBEXTENSION */
1051 /* We don't output the stubs if we are generating a
1052 relocatable output file, since we may as well leave the
1053 stub generation to the final linker pass. If we fail to
1054 verify that the name is defined, we'll try to build stubs
1055 for an undefined name... */
1056 if (! info
->relocateable
1057 && ( h
->root
.type
== bfd_link_hash_defined
1058 || h
->root
.type
== bfd_link_hash_defweak
))
1061 asection
* h_sec
= h
->root
.u
.def
.section
;
1062 const char * name
= h
->root
.root
.string
;
1064 /* h locates the symbol referenced in the reloc. */
1065 h_val
= (h
->root
.u
.def
.value
1066 + h_sec
->output_section
->vma
1067 + h_sec
->output_offset
);
1069 if (howto
->type
== ARM_26
)
1071 if ( h
->class == C_THUMBSTATFUNC
1072 || h
->class == C_THUMBEXTFUNC
)
1074 /* Arm code calling a Thumb function */
1075 signed long int final_disp
;
1076 unsigned long int tmp
;
1080 unsigned long int return_address
;
1081 long int ret_offset
;
1083 struct coff_link_hash_entry
* myh
;
1085 myh
= find_arm_glue (info
, name
, input_bfd
);
1089 my_offset
= myh
->root
.u
.def
.value
;
1091 s
= bfd_get_section_by_name (bfd_of_glue_owner
,
1092 ARM2THUMB_GLUE_SECTION_NAME
);
1093 BFD_ASSERT (s
!= NULL
);
1094 BFD_ASSERT (s
->contents
!= NULL
);
1096 if ((my_offset
& 0x01) == 0x01)
1098 if (INTERWORK_SET (h_sec
->owner
) && ! INTERWORK_FLAG (h_sec
->owner
))
1099 _bfd_error_handler ("%s: warning: interworking not enabled.",
1100 bfd_get_filename (h_sec
->owner
));
1103 myh
->root
.u
.def
.value
= my_offset
;
1105 bfd_put_32 (output_bfd
, a2t1_ldr_insn
, s
->contents
+ my_offset
);
1107 bfd_put_32 (output_bfd
, a2t2_bx_r12_insn
, s
->contents
+ my_offset
+ 4);
1109 /* It's a thumb address. Add the low order bit. */
1110 bfd_put_32 (output_bfd
, h_val
| a2t3_func_addr_insn
, s
->contents
+ my_offset
+ 8);
1113 BFD_ASSERT (my_offset
<= global_arm_glue_size
);
1115 tmp
= bfd_get_32 (input_bfd
, contents
+ rel
->r_vaddr
- input_section
->vma
);
1117 tmp
= tmp
& 0xFF000000;
1119 /* Somehow these are both 4 too far, so subtract 8. */
1123 + s
->output_section
->vma
1124 - (input_section
->output_offset
1125 + input_section
->output_section
->vma
1129 tmp
= tmp
| ((ret_offset
>> 2) & 0x00FFFFFF);
1131 bfd_put_32 (output_bfd
, tmp
, contents
+ rel
->r_vaddr
- input_section
->vma
);
1137 /* Note: We used to check for ARM_THUMB9 and ARM_THUMB12 */
1138 else if (howto
->type
== ARM_THUMB23
)
1140 if ( h
->class == C_EXT
1141 || h
->class == C_STAT
1142 || h
->class == C_LABEL
)
1144 /* Thumb code calling an ARM function */
1145 unsigned long int return_address
;
1146 signed long int final_disp
;
1149 unsigned long int tmp
;
1150 long int ret_offset
;
1151 struct coff_link_hash_entry
* myh
;
1153 myh
= find_thumb_glue (info
, name
, input_bfd
);
1157 my_offset
= myh
->root
.u
.def
.value
;
1159 s
= bfd_get_section_by_name (bfd_of_glue_owner
,
1160 THUMB2ARM_GLUE_SECTION_NAME
);
1162 BFD_ASSERT (s
!= NULL
);
1163 BFD_ASSERT (s
->contents
!= NULL
);
1165 if ((my_offset
& 0x01) == 0x01)
1167 if (INTERWORK_SET (h_sec
->owner
) && ! INTERWORK_FLAG (h_sec
->owner
))
1168 _bfd_error_handler ("%s: warning: interworking not enabled.",
1169 bfd_get_filename (h_sec
->owner
));
1172 myh
->root
.u
.def
.value
= my_offset
;
1174 bfd_put_16 (output_bfd
, t2a1_bx_pc_insn
,
1175 s
->contents
+ my_offset
);
1177 bfd_put_16 (output_bfd
, t2a2_noop_insn
,
1178 s
->contents
+ my_offset
+ 2);
1182 ((signed)(s
->output_offset
1184 + s
->output_section
->vma
))
1187 t2a3_b_insn
|= ((ret_offset
>> 2) & 0x00FFFFFF);
1189 bfd_put_32 (output_bfd
, t2a3_b_insn
, s
->contents
+ my_offset
+ 4);
1192 BFD_ASSERT (my_offset
<= global_thumb_glue_size
);
1194 /* Now go back and fix up the original bl insn to point here. */
1198 - (input_section
->output_offset
1202 tmp
= bfd_get_32 (input_bfd
, contents
+ rel
->r_vaddr
- input_section
->vma
);
1204 bfd_put_32 (output_bfd
,
1205 insert_thumb_branch (tmp
, ret_offset
),
1206 contents
+ rel
->r_vaddr
- input_section
->vma
);
1213 /* If the relocation type and destination symbol does not
1214 fall into one of the above categories, then we can just
1215 perform a direct link. */
1218 rstat
= bfd_reloc_ok
;
1220 #endif /* THUMBEXTENSION */
1221 if ( h
->root
.type
== bfd_link_hash_defined
1222 || h
->root
.type
== bfd_link_hash_defweak
)
1226 sec
= h
->root
.u
.def
.section
;
1227 val
= (h
->root
.u
.def
.value
1228 + sec
->output_section
->vma
1229 + sec
->output_offset
);
1232 else if (! info
->relocateable
)
1234 if (! ((*info
->callbacks
->undefined_symbol
)
1235 (info
, h
->root
.root
.string
, input_bfd
, input_section
,
1236 rel
->r_vaddr
- input_section
->vma
)))
1241 if (info
->base_file
)
1243 /* Emit a reloc if the backend thinks it needs it. */
1244 if (sym
&& pe_data(output_bfd
)->in_reloc_p(output_bfd
, howto
))
1246 /* relocation to a symbol in a section which
1247 isn't absolute - we output the address here
1249 bfd_vma addr
= rel
->r_vaddr
1250 - input_section
->vma
1251 + input_section
->output_offset
1252 + input_section
->output_section
->vma
;
1253 if (coff_data(output_bfd
)->pe
)
1254 addr
-= pe_data(output_bfd
)->pe_opthdr
.ImageBase
;
1255 /* FIXME: Shouldn't 4 be sizeof (addr)? */
1256 fwrite (&addr
, 1,4, (FILE *) info
->base_file
);
1260 #if 1 /* THUMBEXTENSION */
1263 /* Only perform this fix during the final link, not a relocatable link. nickc@cygnus.com */
1264 else if (! info
->relocateable
1265 && howto
->type
== ARM_THUMB23
)
1267 /* This is pretty much a copy of what the default
1268 _bfd_final_link_relocate and _bfd_relocate_contents
1269 routines do to perform a relocation, with special
1270 processing for the split addressing of the Thumb BL
1271 instruction. Again, it would probably be simpler adding a
1272 ThumbBRANCH23 specific macro expansion into the default
1275 bfd_vma address
= rel
->r_vaddr
- input_section
->vma
;
1277 if (address
> input_section
->_raw_size
)
1278 rstat
= bfd_reloc_outofrange
;
1281 bfd_vma relocation
= val
+ addend
;
1282 int size
= bfd_get_reloc_size (howto
);
1283 boolean overflow
= false;
1284 bfd_byte
* location
= contents
+ address
;
1285 bfd_vma x
= bfd_get_32 (input_bfd
, location
);
1286 bfd_vma src_mask
= 0x007FFFFE;
1287 bfd_signed_vma reloc_signed_max
= (1 << (howto
->bitsize
- 1)) - 1;
1288 bfd_signed_vma reloc_signed_min
= ~reloc_signed_max
;
1290 bfd_signed_vma signed_check
;
1292 bfd_signed_vma signed_add
;
1294 BFD_ASSERT (size
== 4);
1296 /* howto->pc_relative should be TRUE for type 14 BRANCH23 */
1297 relocation
-= (input_section
->output_section
->vma
1298 + input_section
->output_offset
);
1300 /* howto->pcrel_offset should be TRUE for type 14 BRANCH23 */
1301 relocation
-= address
;
1303 /* No need to negate the relocation with BRANCH23. */
1304 /* howto->complain_on_overflow == complain_overflow_signed for BRANCH23. */
1305 /* howto->rightshift == 1 */
1306 /* Drop unwanted bits from the value we are relocating to. */
1308 check
= relocation
>> howto
->rightshift
;
1310 /* If this is a signed value, the rightshift just dropped
1311 leading 1 bits (assuming twos complement). */
1312 if ((bfd_signed_vma
) relocation
>= 0)
1313 signed_check
= check
;
1315 signed_check
= (check
1317 & ~((bfd_vma
) - 1 >> howto
->rightshift
)));
1319 /* Get the value from the object file. */
1320 if (bfd_big_endian (input_bfd
))
1322 add
= (((x
) & 0x07ff0000) >> 4) | (((x
) & 0x7ff) << 1);
1326 add
= ((((x
) & 0x7ff) << 12) | (((x
) & 0x07ff0000) >> 15));
1329 /* Get the value from the object file with an appropriate sign.
1330 The expression involving howto->src_mask isolates the upper
1331 bit of src_mask. If that bit is set in the value we are
1332 adding, it is negative, and we subtract out that number times
1333 two. If src_mask includes the highest possible bit, then we
1334 can not get the upper bit, but that does not matter since
1335 signed_add needs no adjustment to become negative in that
1340 if ((add
& (((~ src_mask
) >> 1) & src_mask
)) != 0)
1341 signed_add
-= (((~ src_mask
) >> 1) & src_mask
) << 1;
1343 /* Add the value from the object file, shifted so that it is a
1345 /* howto->bitpos == 0 */
1347 signed_check
+= signed_add
;
1348 relocation
+= signed_add
;
1350 BFD_ASSERT (howto
->complain_on_overflow
== complain_overflow_signed
);
1352 /* Assumes two's complement. */
1353 if ( signed_check
> reloc_signed_max
1354 || signed_check
< reloc_signed_min
)
1357 /* Put RELOCATION into the correct bits: */
1359 if (bfd_big_endian (input_bfd
))
1361 relocation
= (((relocation
& 0xffe) >> 1) | ((relocation
<< 4) & 0x07ff0000));
1365 relocation
= (((relocation
& 0xffe) << 15) | ((relocation
>> 12) & 0x7ff));
1368 /* Add RELOCATION to the correct bits of X: */
1369 x
= ((x
& ~howto
->dst_mask
) | relocation
);
1371 /* Put the relocated value back in the object file: */
1372 bfd_put_32 (input_bfd
, x
, location
);
1374 rstat
= overflow
? bfd_reloc_overflow
: bfd_reloc_ok
;
1378 #endif /* THUMBEXTENSION */
1379 rstat
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
1381 rel
->r_vaddr
- input_section
->vma
,
1383 #if 1 /* THUMBEXTENSION */
1385 Is this the best way to fix up thumb addresses? krk@cygnus.com
1386 Probably not, but it works, and if it works it don't need fixing! nickc@cygnus.com */
1387 /* Only perform this fix during the final link, not a relocatable link. nickc@cygnus.com */
1388 if (! info
->relocateable
1389 && rel
->r_type
== ARM_32
)
1391 /* Determine if we need to set the bottom bit of a relocated address
1392 because the address is the address of a Thumb code symbol. */
1394 int patchit
= false;
1397 && ( h
->class == C_THUMBSTATFUNC
1398 || h
->class == C_THUMBEXTFUNC
))
1402 else if (sym
!= NULL
1403 && sym
->n_scnum
> N_UNDEF
)
1405 /* No hash entry - use the symbol instead. */
1407 if ( sym
->n_sclass
== C_THUMBSTATFUNC
1408 || sym
->n_sclass
== C_THUMBEXTFUNC
)
1414 bfd_byte
* location
= contents
+ rel
->r_vaddr
- input_section
->vma
;
1415 bfd_vma x
= bfd_get_32 (input_bfd
, location
);
1417 bfd_put_32 (input_bfd
, x
| 1, location
);
1420 #endif /* THUMBEXTENSION */
1428 case bfd_reloc_outofrange
:
1429 (*_bfd_error_handler
)
1430 ("%s: bad reloc address 0x%lx in section `%s'",
1431 bfd_get_filename (input_bfd
),
1432 (unsigned long) rel
->r_vaddr
,
1433 bfd_get_section_name (input_bfd
, input_section
));
1435 case bfd_reloc_overflow
:
1438 char buf
[SYMNMLEN
+ 1];
1443 name
= h
->root
.root
.string
;
1446 name
= _bfd_coff_internal_syment_name (input_bfd
, sym
, buf
);
1451 if (! ((*info
->callbacks
->reloc_overflow
)
1452 (info
, name
, howto
->name
, (bfd_vma
) 0, input_bfd
,
1453 input_section
, rel
->r_vaddr
- input_section
->vma
)))
1462 #ifndef COFF_WITH_PR
1464 arm_allocate_interworking_sections (info
)
1465 struct bfd_link_info
*info
;
1469 static char test_char
= '1';
1471 if ( global_arm_glue_size
!= 0 )
1473 BFD_ASSERT (bfd_of_glue_owner
!= NULL
);
1475 s
= bfd_get_section_by_name (bfd_of_glue_owner
, ARM2THUMB_GLUE_SECTION_NAME
);
1477 BFD_ASSERT (s
!= NULL
);
1479 foo
= (bfd_byte
*) bfd_alloc(bfd_of_glue_owner
, global_arm_glue_size
);
1480 memset(foo
, test_char
, global_arm_glue_size
);
1482 s
->_raw_size
= s
->_cooked_size
= global_arm_glue_size
;
1486 if (global_thumb_glue_size
!= 0)
1488 BFD_ASSERT (bfd_of_glue_owner
!= NULL
);
1490 s
= bfd_get_section_by_name (bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
1492 BFD_ASSERT (s
!= NULL
);
1494 foo
= (bfd_byte
*) bfd_alloc(bfd_of_glue_owner
, global_thumb_glue_size
);
1495 memset(foo
, test_char
, global_thumb_glue_size
);
1497 s
->_raw_size
= s
->_cooked_size
= global_thumb_glue_size
;
1505 record_arm_to_thumb_glue (info
, h
)
1506 struct bfd_link_info
* info
;
1507 struct coff_link_hash_entry
* h
;
1509 const char * name
= h
->root
.root
.string
;
1510 register asection
* s
;
1512 struct coff_link_hash_entry
* myh
;
1515 BFD_ASSERT (bfd_of_glue_owner
!= NULL
);
1517 s
= bfd_get_section_by_name (bfd_of_glue_owner
,
1518 ARM2THUMB_GLUE_SECTION_NAME
);
1520 BFD_ASSERT (s
!= NULL
);
1522 tmp_name
= ((char *)
1523 bfd_malloc (strlen (name
) + strlen (ARM2THUMB_GLUE_ENTRY_NAME
)));
1525 BFD_ASSERT (tmp_name
);
1527 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
1529 myh
= coff_link_hash_lookup (coff_hash_table (info
),
1531 false, false, true);
1536 return; /* we've already seen this guy */
1540 /* The only trick here is using global_arm_glue_size as the value. Even
1541 though the section isn't allocated yet, this is where we will be putting
1544 bfd_coff_link_add_one_symbol (info
, bfd_of_glue_owner
, tmp_name
,
1545 BSF_EXPORT
| BSF_GLOBAL
,
1546 s
, global_arm_glue_size
+ 1,
1548 (struct bfd_link_hash_entry
**) & myh
);
1550 global_arm_glue_size
+= ARM2THUMB_GLUE_SIZE
;
1558 record_thumb_to_arm_glue (info
, h
)
1559 struct bfd_link_info
* info
;
1560 struct coff_link_hash_entry
* h
;
1562 const char * name
= h
->root
.root
.string
;
1563 register asection
* s
;
1565 struct coff_link_hash_entry
* myh
;
1568 BFD_ASSERT (bfd_of_glue_owner
!= NULL
);
1570 s
= bfd_get_section_by_name (bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
1572 BFD_ASSERT (s
!= NULL
);
1574 tmp_name
= (char *) bfd_malloc (strlen (name
) + strlen (THUMB2ARM_GLUE_ENTRY_NAME
));
1576 BFD_ASSERT (tmp_name
);
1578 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
1580 myh
= coff_link_hash_lookup (coff_hash_table (info
),
1582 false, false, true);
1587 return; /* we've already seen this guy */
1590 bfd_coff_link_add_one_symbol (info
, bfd_of_glue_owner
, tmp_name
,
1591 BSF_LOCAL
, s
, global_thumb_glue_size
+ 1,
1593 (struct bfd_link_hash_entry
**) & myh
);
1595 /* if we mark it 'thumb', the disassembler will do a better job */
1596 myh
->class = C_THUMBEXTFUNC
;
1600 #define CHANGE_TO_ARM "__%s_change_to_arm"
1602 tmp_name
= ((char *)
1603 bfd_malloc (strlen (name
) + strlen (CHANGE_TO_ARM
)));
1605 BFD_ASSERT (tmp_name
);
1607 sprintf (tmp_name
, CHANGE_TO_ARM
, name
);
1611 /* now allocate another symbol to switch back to arm mode */
1612 bfd_coff_link_add_one_symbol (info
, bfd_of_glue_owner
, tmp_name
,
1613 BSF_LOCAL
, s
, global_thumb_glue_size
+ 4,
1615 (struct bfd_link_hash_entry
**) & myh
);
1619 global_thumb_glue_size
+= THUMB2ARM_GLUE_SIZE
;
1625 arm_process_before_allocation (abfd
, info
)
1627 struct bfd_link_info
* info
;
1631 /* If we are only performing a partial link do not bother
1632 to construct any glue. */
1633 if (info
->relocateable
)
1636 /* Here we have a bfd that is to be included on the link. We have a hook
1637 to do reloc rummaging, before section sizes are nailed down. */
1639 _bfd_coff_get_external_symbols (abfd
);
1641 /* Rummage around all the relocs and map the glue vectors. */
1642 sec
= abfd
->sections
;
1647 for (; sec
!= NULL
; sec
= sec
->next
)
1649 struct internal_reloc
* i
;
1650 struct internal_reloc
* rel
;
1652 if (sec
->reloc_count
== 0)
1655 /* Load the relocs. */
1656 /* FIXME: there may be a storage leak here. */
1658 i
= _bfd_coff_read_internal_relocs (abfd
, sec
, 1, 0, 0, 0);
1660 BFD_ASSERT (i
!= 0);
1662 for (rel
= i
; rel
< i
+ sec
->reloc_count
; ++rel
)
1664 unsigned short r_type
= rel
->r_type
;
1666 struct coff_link_hash_entry
* h
;
1668 symndx
= rel
->r_symndx
;
1670 /* If the relocation is not against a symbol it cannot concern us. */
1674 h
= obj_coff_sym_hashes (abfd
)[symndx
];
1676 /* If the relocation is against a static symbol it must be within
1677 the current section and so canot be a cross ARM/Thumb relocation. */
1684 /* This one is a call from arm code. We need to look up
1685 the target of the call. If it is a thumb target, we
1688 if (h
->class == C_THUMBEXTFUNC
)
1690 record_arm_to_thumb_glue (info
, h
);
1695 /* This one is a call from thumb code. We used to look
1696 for ARM_THUMB9 and ARM_THUMB12 as well. We need to look
1697 up the target of the call. If it is an arm target, we
1705 record_thumb_to_arm_glue (info
, h
);
1720 #endif /* not COFF_WITH_PE */
1722 #define coff_relocate_section coff_arm_relocate_section
1724 /* When doing a relocateable link, we want to convert ARM26 relocs
1725 into ARM26D relocs. */
1728 coff_arm_adjust_symndx (obfd
, info
, ibfd
, sec
, irel
, adjustedp
)
1730 struct bfd_link_info
*info
;
1733 struct internal_reloc
*irel
;
1736 if (irel
->r_type
== 3)
1738 struct coff_link_hash_entry
*h
;
1740 h
= obj_coff_sym_hashes (ibfd
)[irel
->r_symndx
];
1742 && (h
->root
.type
== bfd_link_hash_defined
1743 || h
->root
.type
== bfd_link_hash_defweak
)
1744 && h
->root
.u
.def
.section
->output_section
== sec
->output_section
)
1752 /* Called when merging the private data areas of two BFDs.
1753 This is important as it allows us to detect if we are
1754 attempting to merge binaries compiled for different ARM
1755 targets, eg different CPUs or differents APCS's. */
1758 coff_arm_bfd_merge_private_bfd_data (ibfd
, obfd
)
1762 BFD_ASSERT (ibfd
!= NULL
&& obfd
!= NULL
);
1767 /* If the two formats are different we cannot merge anything. */
1768 if (ibfd
->xvec
!= obfd
->xvec
)
1771 ("ERROR: %s is format '%s' whereas %s is format '%s'",
1772 bfd_get_filename (ibfd
), bfd_get_target(ibfd
),
1773 bfd_get_filename (obfd
), bfd_get_target(obfd
)
1776 bfd_set_error (bfd_error_wrong_format
);
1780 /* Verify that the APCS is the same for the two BFDs */
1781 if (APCS_SET (ibfd
))
1783 if (APCS_SET (obfd
))
1785 /* If the src and dest have different APCS flag bits set, fail. */
1786 if (APCS_26_FLAG (obfd
) != APCS_26_FLAG (ibfd
))
1789 ("%s: ERROR: compiled for APCS-%d whereas target %s uses APCS-%d",
1790 bfd_get_filename (ibfd
), APCS_26_FLAG (ibfd
) ? 26 : 32,
1791 bfd_get_filename (obfd
), APCS_26_FLAG (obfd
) ? 26 : 32
1794 bfd_set_error (bfd_error_wrong_format
);
1798 if (APCS_FLOAT_FLAG (obfd
) != APCS_FLOAT_FLAG (ibfd
))
1801 ("%s: ERROR: passes floats in %s registers whereas target %s uses %s registers",
1802 bfd_get_filename (ibfd
), APCS_FLOAT_FLAG (ibfd
) ? "float" : "integer",
1803 bfd_get_filename (obfd
), APCS_FLOAT_FLAG (obfd
) ? "float" : "integer"
1806 bfd_set_error (bfd_error_wrong_format
);
1810 if (PIC_FLAG (obfd
) != PIC_FLAG (ibfd
))
1813 ("%s: ERROR: compiled as %s code, whereas target %s is %s",
1814 bfd_get_filename (ibfd
), PIC_FLAG (ibfd
) ? "position independent" : "absoluste position",
1815 bfd_get_filename (obfd
), PIC_FLAG (obfd
) ? "position independent" : "absoluste position"
1818 bfd_set_error (bfd_error_wrong_format
);
1824 SET_APCS_FLAGS (obfd
, APCS_26_FLAG (ibfd
) | APCS_FLOAT_FLAG (ibfd
) | PIC_FLAG (ibfd
));
1826 /* Set up the arch and fields as well as these are probably wrong. */
1827 bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
), bfd_get_mach (ibfd
));
1831 /* Check the interworking support. */
1832 if (INTERWORK_SET (ibfd
))
1834 if (INTERWORK_SET (obfd
))
1836 /* If the src and dest differ in their interworking issue a warning. */
1837 if (INTERWORK_FLAG (obfd
) != INTERWORK_FLAG (ibfd
))
1840 ("Warning: input file %s %s interworking, whereas %s does%s",
1841 bfd_get_filename (ibfd
),
1842 INTERWORK_FLAG (ibfd
) ? "supports" : "does not support",
1843 bfd_get_filename (obfd
),
1844 INTERWORK_FLAG (obfd
) ? "." : " not."
1850 SET_INTERWORK_FLAG (obfd
, INTERWORK_FLAG (ibfd
));
1858 /* Display the flags field */
1861 coff_arm_bfd_print_private_bfd_data (abfd
, ptr
)
1865 FILE * file
= (FILE *) ptr
;
1867 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
)
1869 fprintf (file
, "private flags = %x", coff_data( abfd
)->flags
);
1871 if (APCS_SET (abfd
))
1872 fprintf (file
, ": [APCS-%d] [floats passed in %s registers] [%s]",
1873 APCS_26_FLAG (abfd
) ? 26 : 32,
1874 APCS_FLOAT_FLAG (abfd
) ? "float" : "integer",
1875 PIC_FLAG (abfd
) ? "position independent" : "absolute position"
1878 if (INTERWORK_SET (abfd
))
1879 fprintf (file
, ": [interworking %ssupported]",
1880 INTERWORK_FLAG (abfd
) ? "" : "not " );
1888 /* Copies the given flags into the coff_tdata.flags field.
1889 Typically these flags come from the f_flags[] field of
1890 the COFF filehdr structure, which contains important,
1891 target specific information. */
1894 coff_arm_bfd_set_private_flags (abfd
, flags
)
1900 BFD_ASSERT (abfd
!= NULL
);
1902 flag
= (flags
& F_APCS26
) ? F_APCS_26
: 0;
1904 /* Make sure that the APCS field has not been initialised to the opposite value. */
1906 && ( (APCS_26_FLAG (abfd
) != flag
)
1907 || (APCS_FLOAT_FLAG (abfd
) != (flags
& F_APCS_FLOAT
))
1908 || (PIC_FLAG (abfd
) != (flags
& F_PIC
))
1912 flag
|= (flags
& (F_APCS_FLOAT
| F_PIC
));
1914 SET_APCS_FLAGS (abfd
, flag
);
1916 flag
= (flags
& F_INTERWORK
);
1918 /* If either the flags or the BFD do support interworking then do not set the interworking flag. */
1919 if (INTERWORK_SET (abfd
) && (INTERWORK_FLAG (abfd
) != flag
))
1922 SET_INTERWORK_FLAG (abfd
, flag
);
1928 /* Copy the important parts of the target specific data
1929 from one instance of a BFD to another. */
1932 coff_arm_bfd_copy_private_bfd_data (src
, dest
)
1936 BFD_ASSERT (src
!= NULL
&& dest
!= NULL
);
1941 /* If the destination is not in the same format as the source, do not do the copy. */
1942 if (src
->xvec
!= dest
->xvec
)
1945 /* copy the flags field */
1948 if (APCS_SET (dest
))
1950 /* If the src and dest have different APCS flag bits set, fail. */
1951 if (APCS_26_FLAG (dest
) != APCS_26_FLAG (src
))
1954 if (APCS_FLOAT_FLAG (dest
) != APCS_FLOAT_FLAG (src
))
1957 if (PIC_FLAG (dest
) != PIC_FLAG (src
))
1961 SET_APCS_FLAGS (dest
, APCS_26_FLAG (src
) | APCS_FLOAT_FLAG (src
) | PIC_FLAG (src
));
1964 if (INTERWORK_SET (src
))
1966 if (INTERWORK_SET (dest
))
1968 /* If the src and dest have different interworking flags then turn off the interworking bit. */
1969 if (INTERWORK_FLAG (dest
) != INTERWORK_FLAG (src
))
1970 SET_INTERWORK_FLAG (dest
, 0);
1974 SET_INTERWORK_FLAG (dest
, INTERWORK_FLAG (src
));
1981 /* Note: the definitions here of LOCAL_LABEL_PREFIX and USER_LABEL_PREIFX
1982 *must* match the definitions on gcc/config/arm/semi.h. */
1983 #define LOCAL_LABEL_PREFIX "."
1984 #define USER_LABEL_PREFIX "_"
1987 coff_arm_is_local_label_name (abfd
, name
)
1991 #ifdef LOCAL_LABEL_PREFIX
1992 /* If there is a prefix for local labels then look for this.
1993 If the prefix exists, but it is empty, then ignore the test. */
1995 if (LOCAL_LABEL_PREFIX
[0] != 0)
1997 if (strncmp (name
, LOCAL_LABEL_PREFIX
, strlen (LOCAL_LABEL_PREFIX
)) == 0)
2001 #ifdef USER_LABEL_PREFIX
2002 if (USER_LABEL_PREFIX
[0] != 0)
2004 if (strncmp (name
, USER_LABEL_PREFIX
, strlen (USER_LABEL_PREFIX
)) == 0)
2009 /* devo/gcc/config/dbxcoff.h defines ASM_OUTPUT_SOURCE_LINE to generate local line numbers as .LM<number>, so treat these as local. */
2013 case 'L': return true;
2014 case '.': return (name
[1] == 'L' && name
[2] == 'M') ? true : false;
2015 default: return false; /* Cannot make our minds up - default to false so that it will not be stripped by accident. */
2019 #define coff_bfd_is_local_label_name coff_arm_is_local_label_name
2020 #define coff_adjust_symndx coff_arm_adjust_symndx
2021 #define coff_bfd_final_link coff_arm_bfd_final_link
2022 #define coff_bfd_merge_private_bfd_data coff_arm_bfd_merge_private_bfd_data
2023 #define coff_bfd_print_private_bfd_data coff_arm_bfd_print_private_bfd_data
2024 #define coff_bfd_set_private_flags coff_arm_bfd_set_private_flags
2025 #define coff_bfd_copy_private_bfd_data coff_arm_bfd_copy_private_bfd_data
2027 #include "coffcode.h"
2033 if (abfd
== bfd_of_glue_owner
)
2042 return bfd_of_glue_owner
;
2045 /* This piece of machinery exists only to guarantee that the bfd that holds
2046 the glue section is written last.
2048 This does depend on bfd_make_section attaching a new section to the
2049 end of the section list for the bfd.
2051 This is otherwise intended to be functionally the same as
2052 cofflink.c:_bfd_coff_final_link(). It is specifically different only
2053 where the ARM_HACKS macro modifies the code. It is left in as a
2054 precise form of comment. krk@cygnus.com */
2058 /* Do the final link step. */
2061 coff_arm_bfd_final_link (abfd
, info
)
2063 struct bfd_link_info
*info
;
2065 bfd_size_type symesz
;
2066 struct coff_final_link_info finfo
;
2067 boolean debug_merge_allocated
;
2069 struct bfd_link_order
*p
;
2070 size_t max_sym_count
;
2071 size_t max_lineno_count
;
2072 size_t max_reloc_count
;
2073 size_t max_output_reloc_count
;
2074 size_t max_contents_size
;
2075 file_ptr rel_filepos
;
2077 file_ptr line_filepos
;
2078 unsigned int linesz
;
2080 bfd_byte
*external_relocs
= NULL
;
2081 char strbuf
[STRING_SIZE_SIZE
];
2083 symesz
= bfd_coff_symesz (abfd
);
2086 finfo
.output_bfd
= abfd
;
2087 finfo
.strtab
= NULL
;
2088 finfo
.section_info
= NULL
;
2089 finfo
.last_file_index
= -1;
2090 finfo
.last_bf_index
= -1;
2091 finfo
.internal_syms
= NULL
;
2092 finfo
.sec_ptrs
= NULL
;
2093 finfo
.sym_indices
= NULL
;
2094 finfo
.outsyms
= NULL
;
2095 finfo
.linenos
= NULL
;
2096 finfo
.contents
= NULL
;
2097 finfo
.external_relocs
= NULL
;
2098 finfo
.internal_relocs
= NULL
;
2099 debug_merge_allocated
= false;
2101 coff_data (abfd
)->link_info
= info
;
2103 finfo
.strtab
= _bfd_stringtab_init ();
2104 if (finfo
.strtab
== NULL
)
2107 if (! coff_debug_merge_hash_table_init (&finfo
.debug_merge
))
2109 debug_merge_allocated
= true;
2111 /* Compute the file positions for all the sections. */
2112 if (! abfd
->output_has_begun
)
2113 bfd_coff_compute_section_file_positions (abfd
);
2115 /* Count the line numbers and relocation entries required for the
2116 output file. Set the file positions for the relocs. */
2117 rel_filepos
= obj_relocbase (abfd
);
2118 relsz
= bfd_coff_relsz (abfd
);
2119 max_contents_size
= 0;
2120 max_lineno_count
= 0;
2121 max_reloc_count
= 0;
2123 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
2126 o
->lineno_count
= 0;
2127 for (p
= o
->link_order_head
; p
!= NULL
; p
= p
->next
)
2130 if (p
->type
== bfd_indirect_link_order
)
2134 sec
= p
->u
.indirect
.section
;
2136 /* Mark all sections which are to be included in the
2137 link. This will normally be every section. We need
2138 to do this so that we can identify any sections which
2139 the linker has decided to not include. */
2140 sec
->linker_mark
= true;
2142 if (info
->strip
== strip_none
2143 || info
->strip
== strip_some
)
2144 o
->lineno_count
+= sec
->lineno_count
;
2146 if (info
->relocateable
)
2147 o
->reloc_count
+= sec
->reloc_count
;
2149 if (sec
->_raw_size
> max_contents_size
)
2150 max_contents_size
= sec
->_raw_size
;
2151 if (sec
->lineno_count
> max_lineno_count
)
2152 max_lineno_count
= sec
->lineno_count
;
2153 if (sec
->reloc_count
> max_reloc_count
)
2154 max_reloc_count
= sec
->reloc_count
;
2156 else if (info
->relocateable
2157 && (p
->type
== bfd_section_reloc_link_order
2158 || p
->type
== bfd_symbol_reloc_link_order
))
2161 if (o
->reloc_count
== 0)
2165 o
->flags
|= SEC_RELOC
;
2166 o
->rel_filepos
= rel_filepos
;
2167 rel_filepos
+= o
->reloc_count
* relsz
;
2171 /* If doing a relocateable link, allocate space for the pointers we
2173 if (info
->relocateable
)
2177 /* We use section_count + 1, rather than section_count, because
2178 the target_index fields are 1 based. */
2179 finfo
.section_info
=
2180 ((struct coff_link_section_info
*)
2181 bfd_malloc ((abfd
->section_count
+ 1)
2182 * sizeof (struct coff_link_section_info
)));
2183 if (finfo
.section_info
== NULL
)
2185 for (i
= 0; i
<= abfd
->section_count
; i
++)
2187 finfo
.section_info
[i
].relocs
= NULL
;
2188 finfo
.section_info
[i
].rel_hashes
= NULL
;
2192 /* We now know the size of the relocs, so we can determine the file
2193 positions of the line numbers. */
2194 line_filepos
= rel_filepos
;
2195 linesz
= bfd_coff_linesz (abfd
);
2196 max_output_reloc_count
= 0;
2197 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
2199 if (o
->lineno_count
== 0)
2200 o
->line_filepos
= 0;
2203 o
->line_filepos
= line_filepos
;
2204 line_filepos
+= o
->lineno_count
* linesz
;
2207 if (o
->reloc_count
!= 0)
2209 /* We don't know the indices of global symbols until we have
2210 written out all the local symbols. For each section in
2211 the output file, we keep an array of pointers to hash
2212 table entries. Each entry in the array corresponds to a
2213 reloc. When we find a reloc against a global symbol, we
2214 set the corresponding entry in this array so that we can
2215 fix up the symbol index after we have written out all the
2218 Because of this problem, we also keep the relocs in
2219 memory until the end of the link. This wastes memory,
2220 but only when doing a relocateable link, which is not the
2222 BFD_ASSERT (info
->relocateable
);
2223 finfo
.section_info
[o
->target_index
].relocs
=
2224 ((struct internal_reloc
*)
2225 bfd_malloc (o
->reloc_count
* sizeof (struct internal_reloc
)));
2226 finfo
.section_info
[o
->target_index
].rel_hashes
=
2227 ((struct coff_link_hash_entry
**)
2228 bfd_malloc (o
->reloc_count
2229 * sizeof (struct coff_link_hash_entry
*)));
2230 if (finfo
.section_info
[o
->target_index
].relocs
== NULL
2231 || finfo
.section_info
[o
->target_index
].rel_hashes
== NULL
)
2234 if (o
->reloc_count
> max_output_reloc_count
)
2235 max_output_reloc_count
= o
->reloc_count
;
2238 /* Reset the reloc and lineno counts, so that we can use them to
2239 count the number of entries we have output so far. */
2241 o
->lineno_count
= 0;
2244 obj_sym_filepos (abfd
) = line_filepos
;
2246 /* Figure out the largest number of symbols in an input BFD. Take
2247 the opportunity to clear the output_has_begun fields of all the
2250 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
2254 sub
->output_has_begun
= false;
2255 sz
= obj_raw_syment_count (sub
);
2256 if (sz
> max_sym_count
)
2260 /* Allocate some buffers used while linking. */
2261 finfo
.internal_syms
= ((struct internal_syment
*)
2262 bfd_malloc (max_sym_count
2263 * sizeof (struct internal_syment
)));
2264 finfo
.sec_ptrs
= (asection
**) bfd_malloc (max_sym_count
2265 * sizeof (asection
*));
2266 finfo
.sym_indices
= (long *) bfd_malloc (max_sym_count
* sizeof (long));
2267 finfo
.outsyms
= ((bfd_byte
*)
2268 bfd_malloc ((size_t) ((max_sym_count
+ 1) * symesz
)));
2269 finfo
.linenos
= (bfd_byte
*) bfd_malloc (max_lineno_count
2270 * bfd_coff_linesz (abfd
));
2271 finfo
.contents
= (bfd_byte
*) bfd_malloc (max_contents_size
);
2272 finfo
.external_relocs
= (bfd_byte
*) bfd_malloc (max_reloc_count
* relsz
);
2273 if (! info
->relocateable
)
2274 finfo
.internal_relocs
= ((struct internal_reloc
*)
2275 bfd_malloc (max_reloc_count
2276 * sizeof (struct internal_reloc
)));
2277 if ((finfo
.internal_syms
== NULL
&& max_sym_count
> 0)
2278 || (finfo
.sec_ptrs
== NULL
&& max_sym_count
> 0)
2279 || (finfo
.sym_indices
== NULL
&& max_sym_count
> 0)
2280 || finfo
.outsyms
== NULL
2281 || (finfo
.linenos
== NULL
&& max_lineno_count
> 0)
2282 || (finfo
.contents
== NULL
&& max_contents_size
> 0)
2283 || (finfo
.external_relocs
== NULL
&& max_reloc_count
> 0)
2284 || (! info
->relocateable
2285 && finfo
.internal_relocs
== NULL
2286 && max_reloc_count
> 0))
2289 /* We now know the position of everything in the file, except that
2290 we don't know the size of the symbol table and therefore we don't
2291 know where the string table starts. We just build the string
2292 table in memory as we go along. We process all the relocations
2293 for a single input file at once. */
2294 obj_raw_syment_count (abfd
) = 0;
2296 if (coff_backend_info (abfd
)->_bfd_coff_start_final_link
)
2298 if (! bfd_coff_start_final_link (abfd
, info
))
2302 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
2304 for (p
= o
->link_order_head
; p
!= NULL
; p
= p
->next
)
2306 if (p
->type
== bfd_indirect_link_order
2307 && (bfd_get_flavour (p
->u
.indirect
.section
->owner
)
2308 == bfd_target_coff_flavour
))
2310 sub
= p
->u
.indirect
.section
->owner
;
2312 if (! sub
->output_has_begun
&& !arm_do_last(sub
))
2314 if (! sub
->output_has_begun
)
2317 if (! _bfd_coff_link_input_bfd (&finfo
, sub
))
2319 sub
->output_has_begun
= true;
2322 else if (p
->type
== bfd_section_reloc_link_order
2323 || p
->type
== bfd_symbol_reloc_link_order
)
2325 if (! _bfd_coff_reloc_link_order (abfd
, &finfo
, o
, p
))
2330 if (! _bfd_default_link_order (abfd
, info
, o
, p
))
2338 extern bfd
* arm_get_last();
2339 bfd
* last_one
= arm_get_last();
2342 if (! _bfd_coff_link_input_bfd (&finfo
, last_one
))
2344 last_one
->output_has_begun
= true;
2349 /* Free up the buffers used by _bfd_coff_link_input_bfd. */
2351 coff_debug_merge_hash_table_free (&finfo
.debug_merge
);
2352 debug_merge_allocated
= false;
2354 if (finfo
.internal_syms
!= NULL
)
2356 free (finfo
.internal_syms
);
2357 finfo
.internal_syms
= NULL
;
2359 if (finfo
.sec_ptrs
!= NULL
)
2361 free (finfo
.sec_ptrs
);
2362 finfo
.sec_ptrs
= NULL
;
2364 if (finfo
.sym_indices
!= NULL
)
2366 free (finfo
.sym_indices
);
2367 finfo
.sym_indices
= NULL
;
2369 if (finfo
.linenos
!= NULL
)
2371 free (finfo
.linenos
);
2372 finfo
.linenos
= NULL
;
2374 if (finfo
.contents
!= NULL
)
2376 free (finfo
.contents
);
2377 finfo
.contents
= NULL
;
2379 if (finfo
.external_relocs
!= NULL
)
2381 free (finfo
.external_relocs
);
2382 finfo
.external_relocs
= NULL
;
2384 if (finfo
.internal_relocs
!= NULL
)
2386 free (finfo
.internal_relocs
);
2387 finfo
.internal_relocs
= NULL
;
2390 /* The value of the last C_FILE symbol is supposed to be the symbol
2391 index of the first external symbol. Write it out again if
2393 if (finfo
.last_file_index
!= -1
2394 && (unsigned int) finfo
.last_file
.n_value
!= obj_raw_syment_count (abfd
))
2396 finfo
.last_file
.n_value
= obj_raw_syment_count (abfd
);
2397 bfd_coff_swap_sym_out (abfd
, (PTR
) &finfo
.last_file
,
2398 (PTR
) finfo
.outsyms
);
2400 (obj_sym_filepos (abfd
)
2401 + finfo
.last_file_index
* symesz
),
2403 || bfd_write (finfo
.outsyms
, symesz
, 1, abfd
) != symesz
)
2407 /* Write out the global symbols. */
2408 finfo
.failed
= false;
2409 coff_link_hash_traverse (coff_hash_table (info
), _bfd_coff_write_global_sym
,
2414 /* The outsyms buffer is used by _bfd_coff_write_global_sym. */
2415 if (finfo
.outsyms
!= NULL
)
2417 free (finfo
.outsyms
);
2418 finfo
.outsyms
= NULL
;
2421 if (info
->relocateable
)
2423 /* Now that we have written out all the global symbols, we know
2424 the symbol indices to use for relocs against them, and we can
2425 finally write out the relocs. */
2426 external_relocs
= ((bfd_byte
*)
2427 bfd_malloc (max_output_reloc_count
* relsz
));
2428 if (external_relocs
== NULL
)
2431 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
2433 struct internal_reloc
*irel
;
2434 struct internal_reloc
*irelend
;
2435 struct coff_link_hash_entry
**rel_hash
;
2438 if (o
->reloc_count
== 0)
2441 irel
= finfo
.section_info
[o
->target_index
].relocs
;
2442 irelend
= irel
+ o
->reloc_count
;
2443 rel_hash
= finfo
.section_info
[o
->target_index
].rel_hashes
;
2444 erel
= external_relocs
;
2445 for (; irel
< irelend
; irel
++, rel_hash
++, erel
+= relsz
)
2447 if (*rel_hash
!= NULL
)
2449 BFD_ASSERT ((*rel_hash
)->indx
>= 0);
2450 irel
->r_symndx
= (*rel_hash
)->indx
;
2452 bfd_coff_swap_reloc_out (abfd
, (PTR
) irel
, (PTR
) erel
);
2455 if (bfd_seek (abfd
, o
->rel_filepos
, SEEK_SET
) != 0
2456 || bfd_write ((PTR
) external_relocs
, relsz
, o
->reloc_count
,
2457 abfd
) != relsz
* o
->reloc_count
)
2461 free (external_relocs
);
2462 external_relocs
= NULL
;
2465 /* Free up the section information. */
2466 if (finfo
.section_info
!= NULL
)
2470 for (i
= 0; i
< abfd
->section_count
; i
++)
2472 if (finfo
.section_info
[i
].relocs
!= NULL
)
2473 free (finfo
.section_info
[i
].relocs
);
2474 if (finfo
.section_info
[i
].rel_hashes
!= NULL
)
2475 free (finfo
.section_info
[i
].rel_hashes
);
2477 free (finfo
.section_info
);
2478 finfo
.section_info
= NULL
;
2481 /* If we have optimized stabs strings, output them. */
2482 if (coff_hash_table (info
)->stab_info
!= NULL
)
2484 if (! _bfd_write_stab_strings (abfd
, &coff_hash_table (info
)->stab_info
))
2488 /* Write out the string table. */
2489 if (obj_raw_syment_count (abfd
) != 0)
2492 (obj_sym_filepos (abfd
)
2493 + obj_raw_syment_count (abfd
) * symesz
),
2497 #if STRING_SIZE_SIZE == 4
2499 _bfd_stringtab_size (finfo
.strtab
) + STRING_SIZE_SIZE
,
2500 (bfd_byte
*) strbuf
);
2502 #error Change bfd_h_put_32
2505 if (bfd_write (strbuf
, 1, STRING_SIZE_SIZE
, abfd
) != STRING_SIZE_SIZE
)
2508 if (! _bfd_stringtab_emit (abfd
, finfo
.strtab
))
2512 _bfd_stringtab_free (finfo
.strtab
);
2514 /* Setting bfd_get_symcount to 0 will cause write_object_contents to
2515 not try to write out the symbols. */
2516 bfd_get_symcount (abfd
) = 0;
2521 if (debug_merge_allocated
)
2522 coff_debug_merge_hash_table_free (&finfo
.debug_merge
);
2523 if (finfo
.strtab
!= NULL
)
2524 _bfd_stringtab_free (finfo
.strtab
);
2525 if (finfo
.section_info
!= NULL
)
2529 for (i
= 0; i
< abfd
->section_count
; i
++)
2531 if (finfo
.section_info
[i
].relocs
!= NULL
)
2532 free (finfo
.section_info
[i
].relocs
);
2533 if (finfo
.section_info
[i
].rel_hashes
!= NULL
)
2534 free (finfo
.section_info
[i
].rel_hashes
);
2536 free (finfo
.section_info
);
2538 if (finfo
.internal_syms
!= NULL
)
2539 free (finfo
.internal_syms
);
2540 if (finfo
.sec_ptrs
!= NULL
)
2541 free (finfo
.sec_ptrs
);
2542 if (finfo
.sym_indices
!= NULL
)
2543 free (finfo
.sym_indices
);
2544 if (finfo
.outsyms
!= NULL
)
2545 free (finfo
.outsyms
);
2546 if (finfo
.linenos
!= NULL
)
2547 free (finfo
.linenos
);
2548 if (finfo
.contents
!= NULL
)
2549 free (finfo
.contents
);
2550 if (finfo
.external_relocs
!= NULL
)
2551 free (finfo
.external_relocs
);
2552 if (finfo
.internal_relocs
!= NULL
)
2553 free (finfo
.internal_relocs
);
2554 if (external_relocs
!= NULL
)
2555 free (external_relocs
);
2560 arm_bfd_coff_swap_sym_in (abfd
, ext1
, in1
)
2565 SYMENT
*ext
= (SYMENT
*)ext1
;
2566 struct internal_syment
*in
= (struct internal_syment
*)in1
;
2568 register asection
*s
;
2570 if( ext
->e
.e_name
[0] == 0) {
2571 in
->_n
._n_n
._n_zeroes
= 0;
2572 in
->_n
._n_n
._n_offset
= bfd_h_get_32(abfd
, (bfd_byte
*) ext
->e
.e
.e_offset
);
2575 #if SYMNMLEN != E_SYMNMLEN
2576 -> Error
, we need to cope with truncating
or extending SYMNMLEN
!;
2578 memcpy(in
->_n
._n_name
, ext
->e
.e_name
, SYMNMLEN
);
2581 in
->n_value
= bfd_h_get_32(abfd
, (bfd_byte
*) ext
->e_value
);
2582 in
->n_scnum
= bfd_h_get_16(abfd
, (bfd_byte
*) ext
->e_scnum
);
2583 if (sizeof(ext
->e_type
) == 2){
2584 in
->n_type
= bfd_h_get_16(abfd
, (bfd_byte
*) ext
->e_type
);
2587 in
->n_type
= bfd_h_get_32(abfd
, (bfd_byte
*) ext
->e_type
);
2589 in
->n_sclass
= bfd_h_get_8(abfd
, ext
->e_sclass
);
2590 in
->n_numaux
= bfd_h_get_8(abfd
, ext
->e_numaux
);
2592 if (bfd_of_glue_owner
!= 0) /* we already have a toc, so go home */
2595 /* save the bfd for later allocation */
2596 bfd_of_glue_owner
= abfd
;
2598 s
= bfd_get_section_by_name (bfd_of_glue_owner
,
2599 ARM2THUMB_GLUE_SECTION_NAME
);
2603 flags
= SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
;
2605 s
= bfd_make_section (bfd_of_glue_owner
, ARM2THUMB_GLUE_SECTION_NAME
);
2608 || !bfd_set_section_flags (bfd_of_glue_owner
, s
, flags
)
2609 || !bfd_set_section_alignment (bfd_of_glue_owner
, s
, 2))
2611 /* FIXME: set appropriate bfd error */
2616 s
= bfd_get_section_by_name ( bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
2620 flags
= SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
;
2622 s
= bfd_make_section (bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
2625 || !bfd_set_section_flags (bfd_of_glue_owner
, s
, flags
)
2626 || !bfd_set_section_alignment (bfd_of_glue_owner
, s
, 2))
2628 /* FIXME: set appropriate bfd error krk@cygnus.com */
2636 static bfd_coff_backend_data arm_bfd_coff_std_swap_table
=
2638 coff_swap_aux_in
, arm_bfd_coff_swap_sym_in
, coff_swap_lineno_in
,
2639 coff_swap_aux_out
, coff_swap_sym_out
,
2640 coff_swap_lineno_out
, coff_swap_reloc_out
,
2641 coff_swap_filehdr_out
, coff_swap_aouthdr_out
,
2642 coff_swap_scnhdr_out
,
2643 FILHSZ
, AOUTSZ
, SCNHSZ
, SYMESZ
, AUXESZ
, RELSZ
, LINESZ
,
2644 #ifdef COFF_LONG_FILENAMES
2649 #ifdef COFF_LONG_SECTION_NAMES
2654 COFF_DEFAULT_SECTION_ALIGNMENT_POWER
,
2655 coff_swap_filehdr_in
, coff_swap_aouthdr_in
, coff_swap_scnhdr_in
,
2656 coff_swap_reloc_in
, coff_bad_format_hook
, coff_set_arch_mach_hook
,
2657 coff_mkobject_hook
, styp_to_sec_flags
, coff_set_alignment_hook
,
2658 coff_slurp_symbol_table
, symname_in_debug_hook
, coff_pointerize_aux_hook
,
2659 coff_print_aux
, coff_reloc16_extra_cases
, coff_reloc16_estimate
,
2660 coff_sym_is_global
, coff_compute_section_file_positions
,
2661 coff_start_final_link
, coff_relocate_section
, coff_rtype_to_howto
,
2662 coff_adjust_symndx
, coff_link_add_one_symbol
2666 #ifdef TARGET_LITTLE_SYM
2669 armcoff_little_vec
=
2672 #ifdef TARGET_LITTLE_NAME
2677 bfd_target_coff_flavour
,
2678 BFD_ENDIAN_LITTLE
, /* data byte order is little */
2679 BFD_ENDIAN_LITTLE
, /* header byte order is little */
2681 (HAS_RELOC
| EXEC_P
| /* object flags */
2682 HAS_LINENO
| HAS_DEBUG
|
2683 HAS_SYMS
| HAS_LOCALS
| WP_TEXT
| D_PAGED
),
2685 #ifndef COFF_WITH_PE
2686 (SEC_HAS_CONTENTS
| SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
), /* section flags */
2688 (SEC_HAS_CONTENTS
| SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
/* section flags */
2689 | SEC_LINK_ONCE
| SEC_LINK_DUPLICATES
),
2692 #ifdef TARGET_UNDERSCORE
2693 TARGET_UNDERSCORE
, /* leading underscore */
2695 0, /* leading underscore */
2697 '/', /* ar_pad_char */
2698 15, /* ar_max_namelen */
2700 bfd_getl64
, bfd_getl_signed_64
, bfd_putl64
,
2701 bfd_getl32
, bfd_getl_signed_32
, bfd_putl32
,
2702 bfd_getl16
, bfd_getl_signed_16
, bfd_putl16
, /* data */
2703 bfd_getl64
, bfd_getl_signed_64
, bfd_putl64
,
2704 bfd_getl32
, bfd_getl_signed_32
, bfd_putl32
,
2705 bfd_getl16
, bfd_getl_signed_16
, bfd_putl16
, /* hdrs */
2707 /* Note that we allow an object file to be treated as a core file as well. */
2708 {_bfd_dummy_target
, coff_object_p
, /* bfd_check_format */
2709 bfd_generic_archive_p
, coff_object_p
},
2710 {bfd_false
, coff_mkobject
, _bfd_generic_mkarchive
, /* bfd_set_format */
2712 {bfd_false
, coff_write_object_contents
, /* bfd_write_contents */
2713 _bfd_write_archive_contents
, bfd_false
},
2715 BFD_JUMP_TABLE_GENERIC (coff
),
2716 BFD_JUMP_TABLE_COPY (coff
),
2717 BFD_JUMP_TABLE_CORE (_bfd_nocore
),
2718 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff
),
2719 BFD_JUMP_TABLE_SYMBOLS (coff
),
2720 BFD_JUMP_TABLE_RELOCS (coff
),
2721 BFD_JUMP_TABLE_WRITE (coff
),
2722 BFD_JUMP_TABLE_LINK (coff
),
2723 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic
),
2725 & arm_bfd_coff_std_swap_table
,
2729 #ifdef TARGET_BIG_SYM
2735 #ifdef TARGET_BIG_NAME
2740 bfd_target_coff_flavour
,
2741 BFD_ENDIAN_BIG
, /* data byte order is big */
2742 BFD_ENDIAN_BIG
, /* header byte order is big */
2744 (HAS_RELOC
| EXEC_P
| /* object flags */
2745 HAS_LINENO
| HAS_DEBUG
|
2746 HAS_SYMS
| HAS_LOCALS
| WP_TEXT
| D_PAGED
),
2748 #ifndef COFF_WITH_PE
2749 (SEC_HAS_CONTENTS
| SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
), /* section flags */
2751 (SEC_HAS_CONTENTS
| SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
/* section flags */
2752 | SEC_LINK_ONCE
| SEC_LINK_DUPLICATES
),
2755 #ifdef TARGET_UNDERSCORE
2756 TARGET_UNDERSCORE
, /* leading underscore */
2758 0, /* leading underscore */
2760 '/', /* ar_pad_char */
2761 15, /* ar_max_namelen */
2763 bfd_getb64
, bfd_getb_signed_64
, bfd_putb64
,
2764 bfd_getb32
, bfd_getb_signed_32
, bfd_putb32
,
2765 bfd_getb16
, bfd_getb_signed_16
, bfd_putb16
, /* data */
2766 bfd_getb64
, bfd_getb_signed_64
, bfd_putb64
,
2767 bfd_getb32
, bfd_getb_signed_32
, bfd_putb32
,
2768 bfd_getb16
, bfd_getb_signed_16
, bfd_putb16
, /* hdrs */
2770 /* Note that we allow an object file to be treated as a core file as well. */
2771 {_bfd_dummy_target
, coff_object_p
, /* bfd_check_format */
2772 bfd_generic_archive_p
, coff_object_p
},
2773 {bfd_false
, coff_mkobject
, _bfd_generic_mkarchive
, /* bfd_set_format */
2775 {bfd_false
, coff_write_object_contents
, /* bfd_write_contents */
2776 _bfd_write_archive_contents
, bfd_false
},
2778 BFD_JUMP_TABLE_GENERIC (coff
),
2779 BFD_JUMP_TABLE_COPY (coff
),
2780 BFD_JUMP_TABLE_CORE (_bfd_nocore
),
2781 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff
),
2782 BFD_JUMP_TABLE_SYMBOLS (coff
),
2783 BFD_JUMP_TABLE_RELOCS (coff
),
2784 BFD_JUMP_TABLE_WRITE (coff
),
2785 BFD_JUMP_TABLE_LINK (coff
),
2786 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic
),
2788 & arm_bfd_coff_std_swap_table
,