1 /* Main header file for the bfd library -- portable access to object files.
2 ==> The bfd.h file is generated from bfd-in.h and various .c files; if you
3 ==> change it, your changes will probably be lost.
4 Copyright 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
5 Contributed 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. */
23 /* bfd.h -- The only header file required by users of the bfd library
25 The bfd.h file is generated from bfd-in.h and various .c files; if you
26 change it, your changes will probably be lost.
28 All the prototypes and definitions following the comment "THE FOLLOWING
29 IS EXTRACTED FROM THE SOURCE" are extracted from the source files for
30 BFD. If you change it, someone oneday will extract it from the source
31 again, and your changes will be lost. To save yourself from this bind,
32 change the definitions in the source in the bfd directory. Type "make
33 docs" and then "make headers" in that directory, and magically this file
34 will change to reflect your changes.
36 If you don't have the tools to perform the extraction, then you are
37 safe from someone on your system trampling over your header files.
38 You should still maintain the equivalence between the source and this
39 file though; every change you make to the .c file should be reflected
42 #ifndef __BFD_H_SEEN__
43 #define __BFD_H_SEEN__
48 #define BFD_VERSION "2.1"
50 /* forward declaration */
51 typedef struct _bfd bfd;
53 /* General rules: functions which are boolean return true on success
54 and false on failure (unless they're a predicate). -- bfd.doc */
55 /* I'm sure this is going to break something and someone is going to
56 force me to change it. */
57 /* typedef enum boolean {false, true} boolean; */
58 /* Yup, SVR4 has a "typedef enum boolean" in <sys/types.h> -fnf */
59 typedef enum bfd_boolean {false, true} boolean;
61 /* A pointer to a position in a file. */
62 /* FIXME: This should be using off_t from <sys/types.h>.
63 For now, try to avoid breaking stuff by not including <sys/types.h> here.
64 This will break on systems with 64-bit file offsets (e.g. 4.4BSD).
65 Probably the best long-term answer is to avoid using file_ptr AND off_t
66 in this header file, and to handle this in the BFD implementation
67 rather than in its interface. */
68 /* typedef off_t file_ptr; */
69 typedef long int file_ptr;
71 /* Support for different sizes of target format ints and addresses.
72 If the host implements--and wants BFD to use--64-bit values, it
73 defines HOST_64_BIT (in BFD and in every program that calls it --
74 since this affects declarations in bfd.h). */
77 typedef unsigned HOST_64_BIT bfd_vma;
78 typedef HOST_64_BIT bfd_signed_vma;
79 typedef unsigned HOST_64_BIT bfd_size_type;
80 typedef unsigned HOST_64_BIT symvalue;
81 #define fprintf_vma(s,x) \
82 fprintf(s,"%08x%08x", uint64_typeHIGH(x), uint64_typeLOW(x))
83 #else /* not HOST_64_BIT. */
85 /* Represent a target address. Also used as a generic unsigned type
86 which is guaranteed to be big enough to hold any arithmetic types
87 we need to deal with. */
88 typedef unsigned long bfd_vma;
90 /* A generic signed type which is guaranteed to be big enough to hold any
91 arithmetic types we need to deal with. Can be assumed to be compatible
92 with bfd_vma in the same way that signed and unsigned ints are compatible
93 (as parameters, in assignment, etc). */
94 typedef long bfd_signed_vma;
96 typedef unsigned long symvalue;
97 typedef unsigned long bfd_size_type;
99 /* Print a bfd_vma x on stream s. */
100 #define fprintf_vma(s,x) fprintf(s, "%08lx", x)
101 #endif /* not HOST_64_BIT. */
102 #define printf_vma(x) fprintf_vma(stdout,x)
104 typedef unsigned int flagword; /* 32 bits of flags */
108 typedef enum bfd_format {
109 bfd_unknown = 0, /* file format is unknown */
110 bfd_object, /* linker/assember/compiler output */
111 bfd_archive, /* object archive file */
112 bfd_core, /* core dump */
113 bfd_type_end} /* marks the end; don't use it! */
116 /* Object file flag values */
117 #define NO_FLAGS 0x00
118 #define HAS_RELOC 0x01
120 #define HAS_LINENO 0x04
121 #define HAS_DEBUG 0x08
122 #define HAS_SYMS 0x10
123 #define HAS_LOCALS 0x20
126 #define D_PAGED 0x100
127 #define BFD_IS_RELAXABLE 0x200
129 /* symbols and relocation */
131 typedef unsigned long symindex;
133 #define BFD_NO_MORE_SYMBOLS ((symindex) ~0)
135 typedef enum bfd_symclass {
136 bfd_symclass_unknown = 0,
137 bfd_symclass_fcommon, /* fortran common symbols */
138 bfd_symclass_global, /* global symbol, what a surprise */
139 bfd_symclass_debugger, /* some debugger symbol */
140 bfd_symclass_undefined /* none known */
144 typedef int symtype; /* Who knows, yet? */
147 /* general purpose part of a symbol;
148 target specific parts will be found in libcoff.h, liba.out.h etc */
151 #define bfd_get_section(x) ((x)->section)
152 #define bfd_get_output_section(x) ((x)->section->output_section)
153 #define bfd_set_section(x,y) ((x)->section) = (y)
154 #define bfd_asymbol_base(x) ((x)->section->vma)
155 #define bfd_asymbol_value(x) (bfd_asymbol_base(x) + (x)->value)
156 #define bfd_asymbol_name(x) ((x)->name)
157 /*Perhaps future: #define bfd_asymbol_bfd(x) ((x)->section->owner)*/
158 #define bfd_asymbol_bfd(x) ((x)->the_bfd)
159 #define bfd_asymbol_flavour(x) (bfd_asymbol_bfd(x)->xvec->flavour)
161 /* This is a type pun with struct ranlib on purpose! */
162 typedef struct carsym {
164 file_ptr file_offset; /* look here to find the file */
165 } carsym; /* to make these you call a carsymogen */
168 /* Used in generating armaps. Perhaps just a forward definition would do? */
169 struct orl { /* output ranlib */
170 char **name; /* symbol name */
171 file_ptr pos; /* bfd* or file position */
172 int namidx; /* index into string table */
177 /* Linenumber stuff */
178 typedef struct lineno_cache_entry {
179 unsigned int line_number; /* Linenumber from start of function*/
181 struct symbol_cache_entry *sym; /* Function name */
182 unsigned long offset; /* Offset into section */
186 /* object and core file sections */
189 #define align_power(addr, align) \
190 ( ((addr) + ((1<<(align))-1)) & (-1 << (align)))
192 typedef struct sec *sec_ptr;
194 #define bfd_get_section_name(bfd, ptr) ((ptr)->name + 0)
195 #define bfd_get_section_vma(bfd, ptr) ((ptr)->vma + 0)
196 #define bfd_get_section_alignment(bfd, ptr) ((ptr)->alignment_power + 0)
197 #define bfd_section_name(bfd, ptr) ((ptr)->name)
198 #define bfd_section_size(bfd, ptr) (bfd_get_section_size_before_reloc(ptr))
199 #define bfd_section_vma(bfd, ptr) ((ptr)->vma)
200 #define bfd_section_alignment(bfd, ptr) ((ptr)->alignment_power)
201 #define bfd_get_section_flags(bfd, ptr) ((ptr)->flags + 0)
202 #define bfd_get_section_userdata(bfd, ptr) ((ptr)->userdata)
204 #define bfd_is_com_section(ptr) (((ptr)->flags & SEC_IS_COMMON) != 0)
206 #define bfd_set_section_vma(bfd, ptr, val) (((ptr)->vma = (ptr)->lma= (val)), ((ptr)->user_set_vma = true), true)
207 #define bfd_set_section_alignment(bfd, ptr, val) (((ptr)->alignment_power = (val)),true)
208 #define bfd_set_section_userdata(bfd, ptr, val) (((ptr)->userdata = (val)),true)
210 typedef struct stat stat_type;
212 /** Error handling */
214 typedef enum bfd_error {
215 no_error = 0, system_call_error, invalid_target,
216 wrong_format, invalid_operation, no_memory,
217 no_symbols, no_relocation_info,
218 no_more_archived_files, malformed_archive,
219 symbol_not_found, file_not_recognized,
220 file_ambiguously_recognized, no_contents,
221 bfd_error_nonrepresentable_section,
222 no_debug_section, bad_value,
224 /* An input file is shorter than expected. */
227 invalid_error_code} bfd_ec;
229 extern bfd_ec bfd_error;
230 struct reloc_cache_entry;
234 typedef struct bfd_error_vector {
235 void (* nonrepresentable_section ) PARAMS ((CONST bfd *CONST abfd,
236 CONST char *CONST name));
237 void (* undefined_symbol) PARAMS ((CONST struct reloc_cache_entry *rel,
238 CONST struct bfd_seclet *sec));
239 void (* reloc_value_truncated) PARAMS ((CONST struct
240 reloc_cache_entry *rel,
241 struct bfd_seclet *sec));
243 void (* reloc_dangerous) PARAMS ((CONST struct reloc_cache_entry *rel,
244 CONST struct bfd_seclet *sec));
246 } bfd_error_vector_type;
248 CONST char *bfd_errmsg PARAMS ((bfd_ec error_tag));
249 void bfd_perror PARAMS ((CONST char *message));
252 typedef enum bfd_print_symbol
254 bfd_print_symbol_name,
255 bfd_print_symbol_more,
256 bfd_print_symbol_all,
257 bfd_print_symbol_nm /* Pretty format suitable for nm program. */
258 } bfd_print_symbol_type;
262 /* The code that implements targets can initialize a jump table with this
263 macro. It must name all its routines the same way (a prefix plus
264 the standard routine suffix), or it must #define the routines that
265 are not so named, before calling JUMP_TABLE in the initializer. */
267 /* Semi-portable string concatenation in cpp */
270 #define CAT(a,b) a##b
272 #define CAT(a,b) a/**/b
276 #define JUMP_TABLE(NAME)\
277 CAT(NAME,_core_file_failing_command),\
278 CAT(NAME,_core_file_failing_signal),\
279 CAT(NAME,_core_file_matches_executable_p),\
280 CAT(NAME,_slurp_armap),\
281 CAT(NAME,_slurp_extended_name_table),\
282 CAT(NAME,_truncate_arname),\
283 CAT(NAME,_write_armap),\
284 CAT(NAME,_close_and_cleanup), \
285 CAT(NAME,_set_section_contents),\
286 CAT(NAME,_get_section_contents),\
287 CAT(NAME,_new_section_hook),\
288 CAT(NAME,_get_symtab_upper_bound),\
289 CAT(NAME,_get_symtab),\
290 CAT(NAME,_get_reloc_upper_bound),\
291 CAT(NAME,_canonicalize_reloc),\
292 CAT(NAME,_make_empty_symbol),\
293 CAT(NAME,_print_symbol),\
294 CAT(NAME,_get_lineno),\
295 CAT(NAME,_set_arch_mach),\
296 CAT(NAME,_openr_next_archived_file),\
297 CAT(NAME,_find_nearest_line),\
298 CAT(NAME,_generic_stat_arch_elt),\
299 CAT(NAME,_sizeof_headers),\
300 CAT(NAME,_bfd_debug_info_start),\
301 CAT(NAME,_bfd_debug_info_end),\
302 CAT(NAME,_bfd_debug_info_accumulate),\
303 CAT(NAME,_bfd_get_relocated_section_contents),\
304 CAT(NAME,_bfd_relax_section),\
305 CAT(NAME,_bfd_seclet_link),\
306 CAT(NAME,_bfd_reloc_type_lookup),\
307 CAT(NAME,_bfd_make_debug_symbol)
309 #define COFF_SWAP_TABLE (PTR) &bfd_coff_std_swap_table
312 /* User program access to BFD facilities */
314 extern CONST short _bfd_host_big_endian;
315 #define HOST_BYTE_ORDER_BIG_P (*(char *)&_bfd_host_big_endian)
319 /* Cast from const char * to char * so that caller can assign to
320 a char * without a warning. */
321 #define bfd_get_filename(abfd) ((char *) (abfd)->filename)
322 #define bfd_get_format(abfd) ((abfd)->format)
323 #define bfd_get_target(abfd) ((abfd)->xvec->name)
324 #define bfd_get_file_flags(abfd) ((abfd)->flags)
325 #define bfd_applicable_file_flags(abfd) ((abfd)->xvec->object_flags)
326 #define bfd_applicable_section_flags(abfd) ((abfd)->xvec->section_flags)
327 #define bfd_my_archive(abfd) ((abfd)->my_archive)
328 #define bfd_has_map(abfd) ((abfd)->has_armap)
329 #define bfd_header_twiddle_required(abfd) \
330 ((((abfd)->xvec->header_byteorder_big_p) \
331 != (boolean)HOST_BYTE_ORDER_BIG_P) ? true:false)
333 #define bfd_valid_reloc_types(abfd) ((abfd)->xvec->valid_reloc_types)
334 #define bfd_usrdata(abfd) ((abfd)->usrdata)
336 #define bfd_get_start_address(abfd) ((abfd)->start_address)
337 #define bfd_get_symcount(abfd) ((abfd)->symcount)
338 #define bfd_get_outsymbols(abfd) ((abfd)->outsymbols)
339 #define bfd_count_sections(abfd) ((abfd)->section_count)
340 #define bfd_get_architecture(abfd) ((abfd)->obj_arch)
341 #define bfd_get_machine(abfd) ((abfd)->obj_machine)
343 #define bfd_get_symbol_leading_char(abfd) ((abfd)->xvec->symbol_leading_char)
349 /* And more from the source. */