Commit | Line | Data |
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69ebee86 JG |
1 | /* BFD back-end data structures for a.out (and similar) files. |
2 | ||
3 | We try to encapsulate the differences in a few routines, and otherwise | |
4 | share large masses of code. This means we only have to fix bugs in | |
5 | one place, most of the time. */ | |
6 | ||
4a81b561 DHW |
7 | /* Copyright (C) 1990, 1991 Free Software Foundation, Inc. |
8 | ||
9 | This file is part of BFD, the Binary File Diddler. | |
10 | ||
11 | BFD is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 1, or (at your option) | |
14 | any later version. | |
15 | ||
16 | BFD is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with BFD; see the file COPYING. If not, write to | |
23 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
24 | ||
25 | /* $Id$ */ | |
26 | ||
69ebee86 JG |
27 | #define adata(bfd) ((struct aoutdata *) ((bfd)->tdata)) |
28 | #define exec_hdr(bfd) (adata(bfd)->hdr) | |
29 | #define obj_textsec(bfd) (adata(bfd)->textsec) | |
30 | #define obj_datasec(bfd) (adata(bfd)->datasec) | |
31 | #define obj_bsssec(bfd) (adata(bfd)->bsssec) | |
32 | #define obj_sym_filepos(bfd) (adata(bfd)->sym_filepos) | |
33 | #define obj_str_filepos(bfd) (adata(bfd)->str_filepos) | |
4a81b561 | 34 | |
69ebee86 | 35 | #define obj_reloc_entry_size(bfd) (adata(bfd)->reloc_entry_size) |
4a81b561 | 36 | |
69ebee86 | 37 | typedef struct aout_symbol { |
4a81b561 DHW |
38 | asymbol symbol; |
39 | short desc; | |
69ebee86 JG |
40 | char other; |
41 | unsigned char type; | |
4a81b561 DHW |
42 | } aout_symbol_type; |
43 | ||
69ebee86 | 44 | struct aoutdata { |
4a81b561 DHW |
45 | struct exec *hdr; /* exec file header */ |
46 | aout_symbol_type *symbols; /* symtab for input bfd */ | |
47 | ||
48 | ||
49 | /* For ease, we do this */ | |
50 | asection *textsec; | |
51 | asection *datasec; | |
52 | asection *bsssec; | |
53 | ||
54 | /* We remember these offsets so that after check_file_format, we have | |
55 | no dependencies on the particular format of the exec_hdr. */ | |
56 | file_ptr sym_filepos; | |
57 | file_ptr str_filepos; | |
4a81b561 | 58 | |
69ebee86 JG |
59 | /* Size of a relocation entry */ |
60 | unsigned reloc_entry_size; | |
61 | }; | |
4a81b561 | 62 | |
4a81b561 | 63 | |
69ebee86 | 64 | #define obj_outsymbols(bfd) ((PTR)(((struct aoutdata *) ((bfd)->tdata))->outsymbols)) |
4a81b561 DHW |
65 | |
66 | ||
fc723380 JG |
67 | /* We take the address of the first element of an asymbol to ensure that the |
68 | * macro is only ever applied to an asymbol */ | |
4a81b561 DHW |
69 | #define aout_symbol(asymbol) ((aout_symbol_type *)(&(asymbol)->the_bfd)) |
70 | ||
69ebee86 JG |
71 | /*#define obj_symbols(bfd) ((((struct aoutdata *) ((bfd)->tdata))->symbols))*/ |
72 | #define obj_aout_symbols(bfd) ((((struct aoutdata *) (bfd)->tdata))->symbols) | |
73 | #define obj_arch_flags(bfd) ((((struct aoutdata *) (bfd)->tdata))->arch_flags) | |
74 | ||
75 | #define get_tdata(x) ((struct aoutdata *)((x)->tdata)) | |
76 | ||
77 | /* Prototype declarations for functions defined in aout.c. */ | |
78 | ||
79 | PROTO (boolean, aout_squirt_out_relocs,(bfd *abfd, asection *section)); | |
80 | ||
81 | PROTO (bfd_target *, some_aout_object_p, (bfd *abfd, | |
82 | bfd_target *(*callback)())); | |
83 | PROTO (boolean, aout_mkobject, (bfd *abfd)); | |
84 | PROTO (enum machine_type, aout_machine_type, (enum bfd_architecture arch, | |
85 | unsigned long machine)); | |
86 | PROTO (boolean, aout_set_arch_mach, (bfd *abfd, enum bfd_architecture arch, | |
87 | unsigned long machine)); | |
88 | ||
89 | PROTO (boolean, aout_new_section_hook, (bfd *abfd, asection *newsect)); | |
90 | PROTO (boolean, aout_set_section_contents, (bfd *abfd, sec_ptr section, | |
91 | PTR location, file_ptr offset, int count)); | |
92 | ||
93 | PROTO (asymbol *, aout_make_empty_symbol, (bfd *abfd)); | |
94 | PROTO (boolean, aout_slurp_symbol_table, (bfd *abfd)); | |
95 | PROTO (void, aout_write_syms, (bfd *abfd)); | |
96 | PROTO (void, aout_reclaim_symbol_table, (bfd *abfd)); | |
97 | PROTO (unsigned int, aout_get_symtab_upper_bound, (bfd *abfd)); | |
98 | PROTO (unsigned int, aout_get_symtab, (bfd *abfd, asymbol **location)); | |
99 | PROTO (boolean, aout_slurp_reloc_table, (bfd *abfd, sec_ptr asect, | |
100 | asymbol **symbols)); | |
101 | PROTO (unsigned int, aout_canonicalize_reloc, (bfd *abfd, sec_ptr section, | |
102 | arelent **relptr, asymbol **symbols)); | |
103 | PROTO (unsigned int, aout_get_reloc_upper_bound, (bfd *abfd, sec_ptr asect)); | |
104 | PROTO (void, aout_reclaim_reloc, (bfd *ignore_abfd, sec_ptr ignore)); | |
105 | PROTO (alent *, aout_get_lineno, (bfd *ignore_abfd, asymbol *ignore_symbol)); | |
106 | PROTO (void, aout_print_symbol, (bfd *ignore_abfd, PTR file, | |
107 | asymbol *symbol, bfd_print_symbol_enum_type how)); | |
108 | PROTO (boolean, aout_close_and_cleanup, (bfd *abfd)); | |
109 | PROTO (boolean, aout_find_nearest_line, (bfd *abfd, asection *section, | |
110 | asymbol **symbols, bfd_vma offset, CONST char **filename_ptr, | |
111 | CONST char **functionname_ptr, unsigned int *line_ptr)); | |
112 | PROTO (int, aout_sizeof_headers, (bfd *ignore_abfd)); | |
113 | ||
114 | /* Helper routines in aout.c. */ | |
115 | ||
116 | PROTO (void, bfd_aout_swap_exec_header_in, (bfd *abfd, | |
117 | unsigned char *raw_bytes, struct exec *execp)); | |
118 | ||
119 | PROTO (void, bfd_aout_swap_exec_header_out,(bfd *abfd, struct exec *execp, | |
120 | unsigned char *raw_bytes)); | |
121 | ||
122 | /* A.out uses the generic versions of these routines... */ | |
123 | ||
124 | #define aout_get_section_contents bfd_generic_get_section_contents | |
125 | #define aout_close_and_cleanup bfd_generic_close_and_cleanup |