2 /* libbfd.h -- Declarations used by bfd library *implementation*.
3 (This include file is not for users of the library.)
4 Copyright (C) 1990-1991 Free Software Foundation, Inc.
5 Written by Cygnus Support.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
24 /* If you want to read and write large blocks, you might want to do it
25 in quanta of this amount */
26 #define DEFAULT_BUFFERSIZE 8192
28 /* Set a tdata field. Can't use the other macros for this, since they
29 do casts, and casting to the left of assignment isn't portable. */
30 #define set_tdata(bfd, v) ((bfd)->tdata = (PTR) (v))
32 /* tdata for an archive. For an input archive, cache
33 needs to be free()'d. For an output archive, symdefs do. */
36 file_ptr first_file_filepos;
37 /* Speed up searching the armap */
38 struct ar_cache *cache;
39 bfd *archive_head; /* Only interesting in output routines */
40 carsym *symdefs; /* the symdef entries */
41 symindex symdef_count; /* how many there are */
42 char *extended_names; /* clever intel extension */
45 #define bfd_ardata(bfd) ((struct artdata *) ((bfd)->tdata))
47 /* Goes in bfd's arelt_data slot */
49 char * arch_header; /* it's actually a string */
50 unsigned int parsed_size; /* octets of filesize not including ar_hdr */
51 char *filename; /* null-terminated */
54 #define arelt_size(bfd) (((struct areltdata *)((bfd)->arelt_data))->parsed_size)
56 /* FIXME -- a lot of my code allocates a large block and subdivides it.
57 This can't always work, because of alignment restrictions. We should change
58 it before it becomes a problem -- Gumby */
60 PROTO (char *, zalloc, (bfd_size_type size));
62 /* These routines allocate and free things on the BFD's obstack. Note
63 that realloc can never occur in place. */
65 PROTO(PTR, bfd_alloc, (bfd *abfd, bfd_size_type size));
66 PROTO(PTR, bfd_zalloc,(bfd *abfd, bfd_size_type size));
67 PROTO(PTR, bfd_realloc,(bfd *abfd, PTR orig, bfd_size_type new));
68 PROTO(void, bfd_alloc_grow,(bfd *abfd, PTR thing, bfd_size_type size));
69 PROTO(PTR, bfd_alloc_finish,(bfd *abfd));
71 #define bfd_release(x,y) (void) obstack_free(&(x->memory),y)
74 PROTO (bfd_size_type, bfd_read, (PTR ptr, bfd_size_type size, bfd_size_type nitems, bfd *abfd));
75 PROTO (bfd_size_type, bfd_write, (CONST PTR ptr, bfd_size_type size, bfd_size_type nitems, bfd *abfd));
79 PROTO (int, bfd_seek,(bfd* abfd, file_ptr fp , int direction));
80 PROTO (long, bfd_tell, (bfd *abfd));
81 PROTO (bfd *, _bfd_create_empty_archive_element_shell, (bfd *obfd));
82 PROTO (bfd *, look_for_bfd_in_cache, (bfd *arch_bfd, file_ptr index));
83 PROTO (boolean, _bfd_generic_mkarchive, (bfd *abfd));
84 PROTO (struct areltdata *, snarf_ar_hdr, (bfd *abfd));
85 PROTO (bfd_target *, bfd_generic_archive_p, (bfd *abfd));
86 PROTO (boolean, bfd_slurp_bsd_armap, (bfd *abfd));
87 PROTO (boolean, bfd_slurp_coff_armap, (bfd *abfd));
88 PROTO (boolean, _bfd_slurp_extended_name_table, (bfd *abfd));
89 PROTO (boolean, _bfd_write_archive_contents, (bfd *abfd));
90 PROTO (bfd *, new_bfd, ());
92 #define DEFAULT_STRING_SPACE_SIZE 0x2000
93 PROTO (boolean, bfd_add_to_string_table, (char **table, char *new_string,
94 unsigned int *table_length,
96 PROTO (bfd_vma, _do_getb64, (unsigned char *addr));
97 PROTO (bfd_vma, _do_getl64, (unsigned char *addr));
98 PROTO (bfd_vma, _do_getb32, (unsigned char *addr));
99 PROTO (bfd_vma, _do_getl32, (unsigned char *addr));
100 PROTO (bfd_vma, _do_getb16, (unsigned char *addr));
101 PROTO (bfd_vma, _do_getl16, (unsigned char *addr));
102 PROTO (void, _do_putb64, (bfd_vma data, unsigned char *addr));
103 PROTO (void, _do_putl64, (bfd_vma data, unsigned char *addr));
104 PROTO (void, _do_putb32, (bfd_vma data, unsigned char *addr));
105 PROTO (void, _do_putl32, (bfd_vma data, unsigned char *addr));
106 PROTO (void, _do_putb16, (bfd_vma data, unsigned char *addr));
107 PROTO (void, _do_putl16, (bfd_vma data, unsigned char *addr));
109 PROTO (boolean, bfd_false, (bfd *ignore));
110 PROTO (boolean, bfd_true, (bfd *ignore));
111 PROTO (PTR, bfd_nullvoidptr, (bfd *ignore));
112 PROTO (int, bfd_0, (bfd *ignore));
113 PROTO (unsigned int, bfd_0u, (bfd *ignore));
114 PROTO (void, bfd_void, (bfd *ignore));
116 PROTO (bfd *,new_bfd_contained_in,(bfd *));
117 PROTO (boolean, _bfd_dummy_new_section_hook, (bfd *ignore, asection *newsect));
118 PROTO (char *, _bfd_dummy_core_file_failing_command, (bfd *abfd));
119 PROTO (int, _bfd_dummy_core_file_failing_signal, (bfd *abfd));
120 PROTO (boolean, _bfd_dummy_core_file_matches_executable_p, (bfd *core_bfd,
122 PROTO (bfd_target *, _bfd_dummy_target, (bfd *abfd));
124 PROTO (void, bfd_dont_truncate_arname, (bfd *abfd, CONST char *filename,
126 PROTO (void, bfd_bsd_truncate_arname, (bfd *abfd, CONST char *filename,
128 PROTO (void, bfd_gnu_truncate_arname, (bfd *abfd, CONST char *filename,
131 PROTO (boolean, bsd_write_armap, (bfd *arch, unsigned int elength,
132 struct orl *map, int orl_count, int stridx));
134 PROTO (boolean, coff_write_armap, (bfd *arch, unsigned int elength,
135 struct orl *map, int orl_count, int stridx));
137 PROTO (bfd *, bfd_generic_openr_next_archived_file, (bfd *archive,
140 PROTO(int, bfd_generic_stat_arch_elt, (bfd *, struct stat *));
142 PROTO(boolean, bfd_generic_get_section_contents,
143 (bfd *abfd, sec_ptr section, PTR location, file_ptr offset, bfd_size_type count));
145 /* Macros to tell if bfds are read or write enabled.
147 Note that bfds open for read may be scribbled into if the fd passed
148 to bfd_fdopenr is actually open both for read and write
149 simultaneously. However an output bfd will never be open for
150 read. Therefore sometimes you want to check bfd_read_p or
151 !bfd_read_p, and only sometimes bfd_write_p.
154 #define bfd_read_p(abfd) ((abfd)->direction == read_direction || (abfd)->direction == both_direction)
155 #define bfd_write_p(abfd) ((abfd)->direction == write_direction || (abfd)->direction == both_direction)
157 PROTO (void, bfd_assert,(char*,int));
158 #define BFD_ASSERT(x) \
159 { if (!(x)) bfd_assert(__FILE__,__LINE__); }
162 { bfd_assert(__FILE__,__LINE__); }
164 PROTO (FILE *, bfd_cache_lookup_worker, (bfd *));
166 extern bfd *bfd_last_cache;
168 /* Now Steve, what's the story here? */
173 #define itos(x) ((char*)(x))
174 #define stoi(x) ((int)(x))
177 /* Generic routine for close_and_cleanup is really just bfd_true. */
178 #define bfd_generic_close_and_cleanup bfd_true
180 /* THE FOLLOWING IS EXTRACTED FROM THE SOURCE*/
185 This routine is called before any other bfd function using initialized
186 data is used to ensure that the structures have been initialized.
187 Soon this function will go away, and the bfd library will assume that
188 bfd_init has been called.
191 void EXFUN(bfd_check_init,(void));
198 Return the log base 2 of the value supplied, rounded up. eg an arg
199 of 1025 would return 11.
201 PROTO(bfd_vma, bfd_log2,(bfd_vma x));
207 /* BFD_CACHE_MAX_OPEN
208 The maxiumum number of files which the cache will keep open at one
211 #define BFD_CACHE_MAX_OPEN 10
216 Zero, or a pointer to the topmost BFD on the chain. This is used by
217 the @code{bfd_cache_lookup} macro in @file{libbfd.h} to determine when
218 it can avoid a function call.
220 extern bfd *bfd_last_cache;
225 Checks to see if the required BFD is the same as the last one looked
226 up. If so then it can use the iostream in the BFD with impunity, since
227 it can't have changed since the last lookup, otherwise it has to
228 perform the complicated lookup function
230 #define bfd_cache_lookup(x) \
231 ((x)==bfd_last_cache? \
232 (FILE*)(bfd_last_cache->iostream): \
233 bfd_cache_lookup_worker(x))
238 Initialize a BFD by putting it on the cache LRU.
240 PROTO(void, bfd_cache_init, (bfd *));
245 Remove the BFD from the cache. If the attached file is open, then close it too.
247 PROTO(void, bfd_cache_close, (bfd *));
252 Call the OS to open a file for this BFD. Returns the FILE *
253 (possibly null) that results from this operation. Sets up the
254 BFD so that future accesses know the file is open. If the FILE *
255 returned is null, then there is won't have been put in the cache, so
256 it won't have to be removed from it.
258 PROTO(FILE *, bfd_open_file, (bfd *));
262 *i bfd_cache_lookup_worker
263 Called when the macro @code{bfd_cache_lookup} fails to find a quick
264 answer. Finds a file descriptor for this BFD. If necessary, it open it.
265 If there are already more than BFD_CACHE_MAX_OPEN files open, it trys to close
266 one first, to avoid running out of file descriptors.
268 PROTO(FILE *, bfd_cache_lookup_worker, (bfd *));
283 /* bfd_default_arch_struct
285 What bfds are seeded with
288 extern bfd_arch_info_struct_type bfd_default_arch_struct;
291 bfd_default_set_arch_mach
293 Set the architecture and machine type in a bfd. This finds the correct
294 pointer to structure and inserts it into the arch_info pointer.
297 boolean EXFUN(bfd_default_set_arch_mach,(bfd *abfd,
298 enum bfd_architecture arch,
299 unsigned long mach));
303 This routine initializes the architecture dispatch table by calling
304 all installed architecture packages and getting them to poke around.
307 PROTO(void, bfd_arch_init,(void));
313 Link the provided arch info structure into the list
316 void EXFUN(bfd_arch_linkin,(bfd_arch_info_struct_type *));
320 bfd_default_compatible
322 The default function for testing for compatibility
325 CONST bfd_arch_info_struct_type *EXFUN(bfd_default_compatible,
326 (CONST bfd_arch_info_struct_type *a,
327 CONST bfd_arch_info_struct_type *b));
332 The default function for working out whether this is an architecture
333 hit and a machine hit
336 boolean EXFUN(bfd_default_scan,(CONST struct bfd_arch_info_struct *, CONST char *));