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c906108c SS |
1 | /* Definitions for reading symbol files into GDB. |
2 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1996 | |
3 | Free Software Foundation, Inc. | |
4 | ||
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
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. | |
c906108c | 11 | |
c5aa993b JM |
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. | |
c906108c | 16 | |
c5aa993b JM |
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, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | #if !defined (SYMFILE_H) | |
23 | #define SYMFILE_H | |
24 | ||
25 | /* This file requires that you first include "bfd.h". */ | |
26 | ||
27 | /* Partial symbols are stored in the psymbol_cache and pointers to them | |
28 | are kept in a dynamically grown array that is obtained from malloc and | |
29 | grown as necessary via realloc. Each objfile typically has two of these, | |
30 | one for global symbols and one for static symbols. Although this adds | |
31 | a level of indirection for storing or accessing the partial symbols, | |
32 | it allows us to throw away duplicate psymbols and set all pointers | |
33 | to the single saved instance. */ | |
34 | ||
c5aa993b JM |
35 | struct psymbol_allocation_list |
36 | { | |
c906108c | 37 | |
c5aa993b JM |
38 | /* Pointer to beginning of dynamically allocated array of pointers to |
39 | partial symbols. The array is dynamically expanded as necessary to | |
40 | accommodate more pointers. */ | |
c906108c | 41 | |
c5aa993b | 42 | struct partial_symbol **list; |
c906108c | 43 | |
c5aa993b JM |
44 | /* Pointer to next available slot in which to store a pointer to a partial |
45 | symbol. */ | |
c906108c | 46 | |
c5aa993b | 47 | struct partial_symbol **next; |
c906108c | 48 | |
c5aa993b JM |
49 | /* Number of allocated pointer slots in current dynamic array (not the |
50 | number of bytes of storage). The "next" pointer will always point | |
51 | somewhere between list[0] and list[size], and when at list[size] the | |
52 | array will be expanded on the next attempt to store a pointer. */ | |
c906108c | 53 | |
c5aa993b JM |
54 | int size; |
55 | }; | |
c906108c SS |
56 | |
57 | /* Structure to keep track of symbol reading functions for various | |
58 | object file types. */ | |
59 | ||
c5aa993b JM |
60 | struct sym_fns |
61 | { | |
c906108c | 62 | |
c5aa993b JM |
63 | /* BFD flavour that we handle, or (as a special kludge, see xcoffread.c, |
64 | (enum bfd_flavour)-1 for xcoff). */ | |
c906108c | 65 | |
c5aa993b | 66 | enum bfd_flavour sym_flavour; |
c906108c | 67 | |
c5aa993b JM |
68 | /* Initializes anything that is global to the entire symbol table. It is |
69 | called during symbol_file_add, when we begin debugging an entirely new | |
70 | program. */ | |
c906108c | 71 | |
c5aa993b | 72 | void (*sym_new_init) PARAMS ((struct objfile *)); |
c906108c | 73 | |
c5aa993b JM |
74 | /* Reads any initial information from a symbol file, and initializes the |
75 | struct sym_fns SF in preparation for sym_read(). It is called every | |
76 | time we read a symbol file for any reason. */ | |
c906108c | 77 | |
c5aa993b | 78 | void (*sym_init) PARAMS ((struct objfile *)); |
c906108c | 79 | |
d4f3574e | 80 | /* sym_read (objfile, mainline) |
c5aa993b JM |
81 | Reads a symbol file into a psymtab (or possibly a symtab). |
82 | OBJFILE is the objfile struct for the file we are reading. | |
c5aa993b JM |
83 | MAINLINE is 1 if this is the |
84 | main symbol table being read, and 0 if a secondary | |
85 | symbol file (e.g. shared library or dynamically loaded file) | |
86 | is being read. */ | |
c906108c | 87 | |
96baa820 | 88 | void (*sym_read) PARAMS ((struct objfile *, int)); |
c906108c | 89 | |
c5aa993b JM |
90 | /* Called when we are finished with an objfile. Should do all cleanup |
91 | that is specific to the object file format for the particular objfile. */ | |
c906108c | 92 | |
c5aa993b | 93 | void (*sym_finish) PARAMS ((struct objfile *)); |
c906108c | 94 | |
c5aa993b JM |
95 | /* This function produces a file-dependent section_offsets structure, |
96 | allocated in the objfile's storage, and based on the parameter. | |
97 | The parameter is currently a CORE_ADDR (FIXME!) for backward compatibility | |
98 | with the higher levels of GDB. It should probably be changed to | |
99 | a string, where NULL means the default, and others are parsed in a file | |
d4f3574e | 100 | dependent way. */ |
c906108c | 101 | |
2acceee2 | 102 | void (*sym_offsets) PARAMS ((struct objfile *, struct section_addr_info *)); |
c906108c | 103 | |
c5aa993b JM |
104 | /* Finds the next struct sym_fns. They are allocated and initialized |
105 | in whatever module implements the functions pointed to; an | |
106 | initializer calls add_symtab_fns to add them to the global chain. */ | |
c906108c | 107 | |
c5aa993b JM |
108 | struct sym_fns *next; |
109 | ||
110 | }; | |
c906108c SS |
111 | |
112 | /* The default version of sym_fns.sym_offsets for readers that don't | |
113 | do anything special. */ | |
114 | ||
d4f3574e | 115 | extern void |
2acceee2 | 116 | default_symfile_offsets PARAMS ((struct objfile * objfile, struct section_addr_info *)); |
c906108c SS |
117 | |
118 | ||
119 | extern void | |
120 | extend_psymbol_list PARAMS ((struct psymbol_allocation_list *, | |
121 | struct objfile *)); | |
122 | ||
123 | /* Add any kind of symbol to a psymbol_allocation_list. */ | |
124 | ||
125 | /* #include "demangle.h" */ | |
126 | ||
127 | extern void | |
128 | add_psymbol_to_list PARAMS ((char *, int, namespace_enum, enum address_class, | |
c5aa993b | 129 | struct psymbol_allocation_list *, long, CORE_ADDR, |
c906108c SS |
130 | enum language, struct objfile *)); |
131 | ||
132 | extern void | |
c5aa993b JM |
133 | add_psymbol_with_dem_name_to_list PARAMS ((char *, int, char *, int, namespace_enum, |
134 | enum address_class, | |
135 | struct psymbol_allocation_list *, | |
136 | long, CORE_ADDR, | |
137 | enum language, struct objfile *)); | |
c906108c SS |
138 | |
139 | ||
140 | extern void init_psymbol_list PARAMS ((struct objfile *, int)); | |
141 | ||
142 | extern void | |
143 | sort_pst_symbols PARAMS ((struct partial_symtab *)); | |
144 | ||
145 | extern struct symtab * | |
c5aa993b | 146 | allocate_symtab PARAMS ((char *, struct objfile *)); |
c906108c SS |
147 | |
148 | extern int | |
149 | free_named_symtabs PARAMS ((char *)); | |
150 | ||
151 | extern void | |
152 | fill_in_vptr_fieldno PARAMS ((struct type *)); | |
153 | ||
154 | extern void | |
155 | add_symtab_fns PARAMS ((struct sym_fns *)); | |
156 | ||
157 | extern void | |
158 | init_entry_point_info PARAMS ((struct objfile *)); | |
159 | ||
160 | extern void | |
2acceee2 | 161 | syms_from_objfile PARAMS ((struct objfile *, struct section_addr_info *, int, int)); |
c906108c SS |
162 | |
163 | extern void | |
164 | new_symfile_objfile PARAMS ((struct objfile *, int, int)); | |
165 | ||
166 | extern struct partial_symtab * | |
c5aa993b JM |
167 | start_psymtab_common PARAMS ((struct objfile *, struct section_offsets *, |
168 | char *, CORE_ADDR, | |
169 | struct partial_symbol **, | |
170 | struct partial_symbol **)); | |
c906108c SS |
171 | |
172 | /* Sorting your symbols for fast lookup or alphabetical printing. */ | |
173 | ||
174 | extern void | |
175 | sort_block_syms PARAMS ((struct block *)); | |
176 | ||
177 | extern void | |
178 | sort_symtab_syms PARAMS ((struct symtab *)); | |
179 | ||
180 | /* Make a copy of the string at PTR with SIZE characters in the symbol obstack | |
181 | (and add a null character at the end in the copy). | |
182 | Returns the address of the copy. */ | |
183 | ||
184 | extern char * | |
c5aa993b | 185 | obsavestring PARAMS ((char *, int, struct obstack *)); |
c906108c SS |
186 | |
187 | /* Concatenate strings S1, S2 and S3; return the new string. | |
188 | Space is found in the symbol_obstack. */ | |
189 | ||
190 | extern char * | |
c5aa993b JM |
191 | obconcat PARAMS ((struct obstack * obstackp, const char *, const char *, |
192 | const char *)); | |
c906108c SS |
193 | |
194 | /* Variables */ | |
195 | ||
196 | /* whether to auto load solibs at startup time: 0/1. | |
197 | ||
198 | On all platforms, 0 means "don't auto load". | |
199 | ||
200 | On HP-UX, > 0 means a threshhold, in megabytes, of symbol table which will | |
201 | be auto loaded. When the cumulative size of solib symbol table exceeds | |
202 | this threshhold, solibs' symbol tables will not be loaded. | |
203 | ||
204 | On other platforms, > 0 means, "always auto load". | |
c5aa993b | 205 | */ |
c906108c SS |
206 | |
207 | extern int auto_solib_add; | |
208 | ||
209 | /* From symfile.c */ | |
210 | ||
211 | extern CORE_ADDR | |
c5aa993b | 212 | entry_point_address PARAMS ((void)); |
c906108c SS |
213 | |
214 | extern struct partial_symtab * | |
c5aa993b | 215 | allocate_psymtab PARAMS ((char *, struct objfile *)); |
c906108c SS |
216 | |
217 | extern void | |
218 | discard_psymtab PARAMS ((struct partial_symtab *)); | |
219 | ||
220 | extern void find_lowest_section PARAMS ((bfd *, asection *, PTR)); | |
221 | ||
c5aa993b | 222 | extern bfd *symfile_bfd_open PARAMS ((char *)); |
c906108c | 223 | |
c906108c SS |
224 | /* Utility functions for overlay sections: */ |
225 | extern int overlay_debugging; | |
226 | extern int overlay_cache_invalid; | |
227 | ||
228 | /* return the "mapped" overlay section containing the PC */ | |
c5aa993b JM |
229 | extern asection * |
230 | find_pc_mapped_section PARAMS ((CORE_ADDR)); | |
c906108c SS |
231 | |
232 | /* return any overlay section containing the PC (even in its LMA region) */ | |
233 | extern asection * | |
c5aa993b | 234 | find_pc_overlay PARAMS ((CORE_ADDR)); |
c906108c SS |
235 | |
236 | /* return true if the section is an overlay */ | |
237 | extern int | |
238 | section_is_overlay PARAMS ((asection *)); | |
239 | ||
240 | /* return true if the overlay section is currently "mapped" */ | |
241 | extern int | |
242 | section_is_mapped PARAMS ((asection *)); | |
243 | ||
244 | /* return true if pc belongs to section's VMA */ | |
245 | extern CORE_ADDR | |
c5aa993b | 246 | pc_in_mapped_range PARAMS ((CORE_ADDR, asection *)); |
c906108c SS |
247 | |
248 | /* return true if pc belongs to section's LMA */ | |
249 | extern CORE_ADDR | |
c5aa993b | 250 | pc_in_unmapped_range PARAMS ((CORE_ADDR, asection *)); |
c906108c SS |
251 | |
252 | /* map an address from a section's LMA to its VMA */ | |
253 | extern CORE_ADDR | |
c5aa993b | 254 | overlay_mapped_address PARAMS ((CORE_ADDR, asection *)); |
c906108c SS |
255 | |
256 | /* map an address from a section's VMA to its LMA */ | |
257 | extern CORE_ADDR | |
c5aa993b | 258 | overlay_unmapped_address PARAMS ((CORE_ADDR, asection *)); |
c906108c SS |
259 | |
260 | /* convert an address in an overlay section (force into VMA range) */ | |
c5aa993b JM |
261 | extern CORE_ADDR |
262 | symbol_overlayed_address PARAMS ((CORE_ADDR, asection *)); | |
c906108c SS |
263 | |
264 | /* From dwarfread.c */ | |
265 | ||
266 | extern void | |
d4f3574e SS |
267 | dwarf_build_psymtabs PARAMS ((struct objfile *, int, file_ptr, unsigned int, |
268 | file_ptr, unsigned int)); | |
c906108c SS |
269 | |
270 | /* From dwarf2read.c */ | |
271 | ||
c5aa993b | 272 | extern int dwarf2_has_info PARAMS ((bfd * abfd)); |
c906108c | 273 | |
d4f3574e SS |
274 | extern void dwarf2_build_psymtabs PARAMS ((struct objfile *, int)); |
275 | ||
c906108c SS |
276 | /* From mdebugread.c */ |
277 | ||
278 | /* Hack to force structures to exist before use in parameter list. */ | |
279 | struct ecoff_debug_hack | |
c5aa993b JM |
280 | { |
281 | struct ecoff_debug_swap *a; | |
282 | struct ecoff_debug_info *b; | |
283 | }; | |
c906108c SS |
284 | extern void |
285 | mdebug_build_psymtabs PARAMS ((struct objfile *, | |
286 | const struct ecoff_debug_swap *, | |
d4f3574e | 287 | struct ecoff_debug_info *)); |
c906108c SS |
288 | |
289 | extern void | |
290 | elfmdebug_build_psymtabs PARAMS ((struct objfile *, | |
291 | const struct ecoff_debug_swap *, | |
d4f3574e | 292 | asection *)); |
c906108c | 293 | |
c5aa993b | 294 | #endif /* !defined(SYMFILE_H) */ |