Commit | Line | Data |
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c906108c | 1 | /* Definitions for symbol file management in GDB. |
af5f3db6 | 2 | |
ecd75fc8 | 3 | Copyright (C) 1992-2014 Free Software Foundation, Inc. |
c906108c | 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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 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 | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #if !defined (OBJFILES_H) | |
21 | #define OBJFILES_H | |
22 | ||
3956d554 | 23 | #include "gdb_obstack.h" /* For obstack internals. */ |
0df8b418 | 24 | #include "symfile.h" /* For struct psymbol_allocation_list. */ |
6c95b8df | 25 | #include "progspace.h" |
8e260fc0 | 26 | #include "registry.h" |
65cf3563 | 27 | #include "gdb_bfd.h" |
3956d554 | 28 | |
af5f3db6 | 29 | struct bcache; |
2de7ced7 | 30 | struct htab; |
5c4e30ca | 31 | struct symtab; |
4a4b3fed | 32 | struct objfile_data; |
08c0b5bc | 33 | |
c906108c SS |
34 | /* This structure maintains information on a per-objfile basis about the |
35 | "entry point" of the objfile, and the scope within which the entry point | |
36 | exists. It is possible that gdb will see more than one objfile that is | |
37 | executable, each with its own entry point. | |
38 | ||
39 | For example, for dynamically linked executables in SVR4, the dynamic linker | |
40 | code is contained within the shared C library, which is actually executable | |
41 | and is run by the kernel first when an exec is done of a user executable | |
42 | that is dynamically linked. The dynamic linker within the shared C library | |
43 | then maps in the various program segments in the user executable and jumps | |
44 | to the user executable's recorded entry point, as if the call had been made | |
45 | directly by the kernel. | |
46 | ||
73c1e0a1 AC |
47 | The traditional gdb method of using this info was to use the |
48 | recorded entry point to set the entry-file's lowpc and highpc from | |
627b3ba2 AC |
49 | the debugging information, where these values are the starting |
50 | address (inclusive) and ending address (exclusive) of the | |
51 | instruction space in the executable which correspond to the | |
0df8b418 | 52 | "startup file", i.e. crt0.o in most cases. This file is assumed to |
627b3ba2 AC |
53 | be a startup file and frames with pc's inside it are treated as |
54 | nonexistent. Setting these variables is necessary so that | |
55 | backtraces do not fly off the bottom of the stack. | |
56 | ||
57 | NOTE: cagney/2003-09-09: It turns out that this "traditional" | |
58 | method doesn't work. Corinna writes: ``It turns out that the call | |
2f72f850 | 59 | to test for "inside entry file" destroys a meaningful backtrace |
0df8b418 | 60 | under some conditions. E.g. the backtrace tests in the asm-source |
627b3ba2 AC |
61 | testcase are broken for some targets. In this test the functions |
62 | are all implemented as part of one file and the testcase is not | |
63 | necessarily linked with a start file (depending on the target). | |
64 | What happens is, that the first frame is printed normaly and | |
65 | following frames are treated as being inside the enttry file then. | |
66 | This way, only the #0 frame is printed in the backtrace output.'' | |
67 | Ref "frame.c" "NOTE: vinschen/2003-04-01". | |
c906108c SS |
68 | |
69 | Gdb also supports an alternate method to avoid running off the bottom | |
70 | of the stack. | |
71 | ||
72 | There are two frames that are "special", the frame for the function | |
73 | containing the process entry point, since it has no predecessor frame, | |
74 | and the frame for the function containing the user code entry point | |
75 | (the main() function), since all the predecessor frames are for the | |
76 | process startup code. Since we have no guarantee that the linked | |
77 | in startup modules have any debugging information that gdb can use, | |
78 | we need to avoid following frame pointers back into frames that might | |
79 | have been built in the startup code, as we might get hopelessly | |
80 | confused. However, we almost always have debugging information | |
81 | available for main(). | |
82 | ||
618ce49f AC |
83 | These variables are used to save the range of PC values which are |
84 | valid within the main() function and within the function containing | |
85 | the process entry point. If we always consider the frame for | |
86 | main() as the outermost frame when debugging user code, and the | |
87 | frame for the process entry point function as the outermost frame | |
88 | when debugging startup code, then all we have to do is have | |
89 | DEPRECATED_FRAME_CHAIN_VALID return false whenever a frame's | |
90 | current PC is within the range specified by these variables. In | |
91 | essence, we set "ceilings" in the frame chain beyond which we will | |
c906108c SS |
92 | not proceed when following the frame chain back up the stack. |
93 | ||
94 | A nice side effect is that we can still debug startup code without | |
95 | running off the end of the frame chain, assuming that we have usable | |
96 | debugging information in the startup modules, and if we choose to not | |
97 | use the block at main, or can't find it for some reason, everything | |
98 | still works as before. And if we have no startup code debugging | |
99 | information but we do have usable information for main(), backtraces | |
6e4c6c91 | 100 | from user code don't go wandering off into the startup code. */ |
c906108c SS |
101 | |
102 | struct entry_info | |
c5aa993b | 103 | { |
53eddfa6 | 104 | /* The unrelocated value we should use for this objfile entry point. */ |
c5aa993b | 105 | CORE_ADDR entry_point; |
c906108c | 106 | |
53eddfa6 TT |
107 | /* The index of the section in which the entry point appears. */ |
108 | int the_bfd_section_index; | |
109 | ||
abd0a5fa JK |
110 | /* Set to 1 iff ENTRY_POINT contains a valid value. */ |
111 | unsigned entry_point_p : 1; | |
6ef55de7 TT |
112 | |
113 | /* Set to 1 iff this object was initialized. */ | |
114 | unsigned initialized : 1; | |
c5aa993b | 115 | }; |
c906108c | 116 | |
f1f6aadf PA |
117 | /* Sections in an objfile. The section offsets are stored in the |
118 | OBJFILE. */ | |
c906108c | 119 | |
c5aa993b JM |
120 | struct obj_section |
121 | { | |
7be0c536 | 122 | struct bfd_section *the_bfd_section; /* BFD section pointer */ |
c906108c | 123 | |
c5aa993b JM |
124 | /* Objfile this section is part of. */ |
125 | struct objfile *objfile; | |
c906108c | 126 | |
0df8b418 | 127 | /* True if this "overlay section" is mapped into an "overlay region". */ |
c5aa993b JM |
128 | int ovly_mapped; |
129 | }; | |
c906108c | 130 | |
f1f6aadf PA |
131 | /* Relocation offset applied to S. */ |
132 | #define obj_section_offset(s) \ | |
65cf3563 | 133 | (((s)->objfile->section_offsets)->offsets[gdb_bfd_section_index ((s)->objfile->obfd, (s)->the_bfd_section)]) |
f1f6aadf PA |
134 | |
135 | /* The memory address of section S (vma + offset). */ | |
136 | #define obj_section_addr(s) \ | |
1706c199 | 137 | (bfd_get_section_vma ((s)->objfile->obfd, s->the_bfd_section) \ |
f1f6aadf PA |
138 | + obj_section_offset (s)) |
139 | ||
140 | /* The one-passed-the-end memory address of section S | |
141 | (vma + size + offset). */ | |
142 | #define obj_section_endaddr(s) \ | |
1706c199 | 143 | (bfd_get_section_vma ((s)->objfile->obfd, s->the_bfd_section) \ |
f1f6aadf PA |
144 | + bfd_get_section_size ((s)->the_bfd_section) \ |
145 | + obj_section_offset (s)) | |
c906108c | 146 | |
c906108c SS |
147 | /* The "objstats" structure provides a place for gdb to record some |
148 | interesting information about its internal state at runtime, on a | |
149 | per objfile basis, such as information about the number of symbols | |
0df8b418 | 150 | read, size of string table (if any), etc. */ |
c906108c | 151 | |
c5aa993b JM |
152 | struct objstats |
153 | { | |
154 | int n_minsyms; /* Number of minimal symbols read */ | |
155 | int n_psyms; /* Number of partial symbols read */ | |
156 | int n_syms; /* Number of full symbols read */ | |
157 | int n_stabs; /* Number of ".stabs" read (if applicable) */ | |
158 | int n_types; /* Number of types */ | |
159 | int sz_strtab; /* Size of stringtable, (if applicable) */ | |
160 | }; | |
c906108c SS |
161 | |
162 | #define OBJSTAT(objfile, expr) (objfile -> stats.expr) | |
163 | #define OBJSTATS struct objstats stats | |
a14ed312 KB |
164 | extern void print_objfile_statistics (void); |
165 | extern void print_symbol_bcache_statistics (void); | |
c906108c | 166 | |
9227b5eb | 167 | /* Number of entries in the minimal symbol hash table. */ |
375f3d86 | 168 | #define MINIMAL_SYMBOL_HASH_SIZE 2039 |
9227b5eb | 169 | |
706e3705 TT |
170 | /* Some objfile data is hung off the BFD. This enables sharing of the |
171 | data across all objfiles using the BFD. The data is stored in an | |
172 | instance of this structure, and associated with the BFD using the | |
173 | registry system. */ | |
174 | ||
175 | struct objfile_per_bfd_storage | |
176 | { | |
177 | /* The storage has an obstack of its own. */ | |
178 | ||
179 | struct obstack storage_obstack; | |
180 | ||
181 | /* Byte cache for file names. */ | |
182 | ||
183 | struct bcache *filename_cache; | |
6532ff36 TT |
184 | |
185 | /* Byte cache for macros. */ | |
186 | struct bcache *macro_cache; | |
df6d5441 TT |
187 | |
188 | /* The gdbarch associated with the BFD. Note that this gdbarch is | |
189 | determined solely from BFD information, without looking at target | |
190 | information. The gdbarch determined from a running target may | |
191 | differ from this e.g. with respect to register types and names. */ | |
192 | ||
193 | struct gdbarch *gdbarch; | |
84a1243b TT |
194 | |
195 | /* Hash table for mapping symbol names to demangled names. Each | |
196 | entry in the hash table is actually two consecutive strings, | |
197 | both null-terminated; the first one is a mangled or linkage | |
198 | name, and the second is the demangled name or just a zero byte | |
199 | if the name doesn't demangle. */ | |
200 | struct htab *demangled_names_hash; | |
6ef55de7 TT |
201 | |
202 | /* The per-objfile information about the entry point, the scope (file/func) | |
203 | containing the entry point, and the scope of the user's main() func. */ | |
204 | ||
205 | struct entry_info ei; | |
3d548a53 TT |
206 | |
207 | /* The name and language of any "main" found in this objfile. The | |
208 | name can be NULL, which means that the information was not | |
209 | recorded. */ | |
210 | ||
211 | const char *name_of_main; | |
212 | enum language language_of_main; | |
706e3705 TT |
213 | }; |
214 | ||
c906108c SS |
215 | /* Master structure for keeping track of each file from which |
216 | gdb reads symbols. There are several ways these get allocated: 1. | |
217 | The main symbol file, symfile_objfile, set by the symbol-file command, | |
218 | 2. Additional symbol files added by the add-symbol-file command, | |
219 | 3. Shared library objfiles, added by ADD_SOLIB, 4. symbol files | |
220 | for modules that were loaded when GDB attached to a remote system | |
221 | (see remote-vx.c). */ | |
222 | ||
223 | struct objfile | |
c5aa993b | 224 | { |
c906108c | 225 | |
c5aa993b | 226 | /* All struct objfile's are chained together by their next pointers. |
ff011ed7 TT |
227 | The program space field "objfiles" (frequently referenced via |
228 | the macro "object_files") points to the first link in this | |
229 | chain. */ | |
c906108c | 230 | |
c5aa993b | 231 | struct objfile *next; |
c906108c | 232 | |
04affae3 JK |
233 | /* The object file's original name as specified by the user, |
234 | made absolute, and tilde-expanded. However, it is not canonicalized | |
235 | (i.e., it has not been passed through gdb_realpath). | |
236 | This pointer is never NULL. This does not have to be freed; it is | |
e1507e95 | 237 | guaranteed to have a lifetime at least as long as the objfile. */ |
c906108c | 238 | |
4262abfb | 239 | char *original_name; |
c906108c | 240 | |
e4f6d2ec TJB |
241 | CORE_ADDR addr_low; |
242 | ||
0838fb57 DE |
243 | /* Some flag bits for this objfile. |
244 | The values are defined by OBJF_*. */ | |
c906108c | 245 | |
c5aa993b | 246 | unsigned short flags; |
c906108c | 247 | |
6c95b8df PA |
248 | /* The program space associated with this objfile. */ |
249 | ||
250 | struct program_space *pspace; | |
251 | ||
c5aa993b JM |
252 | /* Each objfile points to a linked list of symtabs derived from this file, |
253 | one symtab structure for each compilation unit (source file). Each link | |
0df8b418 | 254 | in the symtab list contains a backpointer to this objfile. */ |
c906108c | 255 | |
c5aa993b | 256 | struct symtab *symtabs; |
c906108c | 257 | |
c5aa993b JM |
258 | /* Each objfile points to a linked list of partial symtabs derived from |
259 | this file, one partial symtab structure for each compilation unit | |
0df8b418 | 260 | (source file). */ |
c906108c | 261 | |
c5aa993b | 262 | struct partial_symtab *psymtabs; |
c906108c | 263 | |
ff013f42 JK |
264 | /* Map addresses to the entries of PSYMTABS. It would be more efficient to |
265 | have a map per the whole process but ADDRMAP cannot selectively remove | |
266 | its items during FREE_OBJFILE. This mapping is already present even for | |
267 | PARTIAL_SYMTABs which still have no corresponding full SYMTABs read. */ | |
268 | ||
269 | struct addrmap *psymtabs_addrmap; | |
270 | ||
0df8b418 | 271 | /* List of freed partial symtabs, available for re-use. */ |
c906108c | 272 | |
c5aa993b | 273 | struct partial_symtab *free_psymtabs; |
c906108c | 274 | |
c5aa993b JM |
275 | /* The object file's BFD. Can be null if the objfile contains only |
276 | minimal symbols, e.g. the run time common symbols for SunOS4. */ | |
c906108c | 277 | |
c5aa993b | 278 | bfd *obfd; |
c906108c | 279 | |
706e3705 TT |
280 | /* The per-BFD data. Note that this is treated specially if OBFD |
281 | is NULL. */ | |
282 | ||
283 | struct objfile_per_bfd_storage *per_bfd; | |
284 | ||
c5aa993b JM |
285 | /* The modification timestamp of the object file, as of the last time |
286 | we read its symbols. */ | |
c906108c | 287 | |
c5aa993b | 288 | long mtime; |
c906108c | 289 | |
b99607ea | 290 | /* Obstack to hold objects that should be freed when we load a new symbol |
0df8b418 | 291 | table from this object file. */ |
b99607ea | 292 | |
b99607ea EZ |
293 | struct obstack objfile_obstack; |
294 | ||
c5aa993b | 295 | /* A byte cache where we can stash arbitrary "chunks" of bytes that |
0df8b418 | 296 | will not change. */ |
c906108c | 297 | |
0df8b418 | 298 | struct psymbol_bcache *psymbol_cache; /* Byte cache for partial syms. */ |
c906108c | 299 | |
c5aa993b | 300 | /* Vectors of all partial symbols read in from file. The actual data |
0df8b418 | 301 | is stored in the objfile_obstack. */ |
c906108c | 302 | |
c5aa993b JM |
303 | struct psymbol_allocation_list global_psymbols; |
304 | struct psymbol_allocation_list static_psymbols; | |
c906108c | 305 | |
c5aa993b | 306 | /* Each file contains a pointer to an array of minimal symbols for all |
3e43a32a MS |
307 | global symbols that are defined within the file. The array is |
308 | terminated by a "null symbol", one that has a NULL pointer for the | |
309 | name and a zero value for the address. This makes it easy to walk | |
310 | through the array when passed a pointer to somewhere in the middle | |
311 | of it. There is also a count of the number of symbols, which does | |
312 | not include the terminating null symbol. The array itself, as well | |
313 | as all the data that it points to, should be allocated on the | |
0df8b418 | 314 | objfile_obstack for this file. */ |
c906108c | 315 | |
c5aa993b JM |
316 | struct minimal_symbol *msymbols; |
317 | int minimal_symbol_count; | |
c906108c | 318 | |
9227b5eb JB |
319 | /* This is a hash table used to index the minimal symbols by name. */ |
320 | ||
321 | struct minimal_symbol *msymbol_hash[MINIMAL_SYMBOL_HASH_SIZE]; | |
322 | ||
323 | /* This hash table is used to index the minimal symbols by their | |
324 | demangled names. */ | |
325 | ||
326 | struct minimal_symbol *msymbol_demangled_hash[MINIMAL_SYMBOL_HASH_SIZE]; | |
327 | ||
c5aa993b | 328 | /* Structure which keeps track of functions that manipulate objfile's |
0df8b418 | 329 | of the same type as this objfile. I.e. the function to read partial |
c5aa993b JM |
330 | symbols for example. Note that this structure is in statically |
331 | allocated memory, and is shared by all objfiles that use the | |
0df8b418 | 332 | object module reader of this type. */ |
c906108c | 333 | |
00b5771c | 334 | const struct sym_fns *sf; |
c906108c | 335 | |
0d0e1a63 | 336 | /* Per objfile data-pointers required by other GDB modules. */ |
0d0e1a63 | 337 | |
8e260fc0 | 338 | REGISTRY_FIELDS; |
0d0e1a63 | 339 | |
c5aa993b | 340 | /* Set of relocation offsets to apply to each section. |
d82ea6a8 DE |
341 | The table is indexed by the_bfd_section->index, thus it is generally |
342 | as large as the number of sections in the binary. | |
343 | The table is stored on the objfile_obstack. | |
c906108c | 344 | |
c5aa993b JM |
345 | These offsets indicate that all symbols (including partial and |
346 | minimal symbols) which have been read have been relocated by this | |
d82ea6a8 | 347 | much. Symbols which are yet to be read need to be relocated by it. */ |
c906108c | 348 | |
c5aa993b JM |
349 | struct section_offsets *section_offsets; |
350 | int num_sections; | |
c906108c | 351 | |
0df8b418 | 352 | /* Indexes in the section_offsets array. These are initialized by the |
b8fbeb18 | 353 | *_symfile_offsets() family of functions (som_symfile_offsets, |
0df8b418 | 354 | xcoff_symfile_offsets, default_symfile_offsets). In theory they |
b8fbeb18 | 355 | should correspond to the section indexes used by bfd for the |
0df8b418 MS |
356 | current objfile. The exception to this for the time being is the |
357 | SOM version. */ | |
b8fbeb18 EZ |
358 | |
359 | int sect_index_text; | |
360 | int sect_index_data; | |
361 | int sect_index_bss; | |
362 | int sect_index_rodata; | |
363 | ||
96baa820 | 364 | /* These pointers are used to locate the section table, which |
5c44784c | 365 | among other things, is used to map pc addresses into sections. |
96baa820 JM |
366 | SECTIONS points to the first entry in the table, and |
367 | SECTIONS_END points to the first location past the last entry | |
65cf3563 TT |
368 | in the table. The table is stored on the objfile_obstack. The |
369 | sections are indexed by the BFD section index; but the | |
370 | structure data is only valid for certain sections | |
371 | (e.g. non-empty, SEC_ALLOC). */ | |
c906108c | 372 | |
d82ea6a8 | 373 | struct obj_section *sections, *sections_end; |
c906108c | 374 | |
15d123c9 TG |
375 | /* GDB allows to have debug symbols in separate object files. This is |
376 | used by .gnu_debuglink, ELF build id note and Mach-O OSO. | |
377 | Although this is a tree structure, GDB only support one level | |
378 | (ie a separate debug for a separate debug is not supported). Note that | |
379 | separate debug object are in the main chain and therefore will be | |
380 | visited by ALL_OBJFILES & co iterators. Separate debug objfile always | |
381 | has a non-nul separate_debug_objfile_backlink. */ | |
382 | ||
383 | /* Link to the first separate debug object, if any. */ | |
5b5d99cf JB |
384 | struct objfile *separate_debug_objfile; |
385 | ||
386 | /* If this is a separate debug object, this is used as a link to the | |
0df8b418 | 387 | actual executable objfile. */ |
5b5d99cf | 388 | struct objfile *separate_debug_objfile_backlink; |
15d123c9 TG |
389 | |
390 | /* If this is a separate debug object, this is a link to the next one | |
391 | for the same executable objfile. */ | |
392 | struct objfile *separate_debug_objfile_link; | |
393 | ||
0df8b418 | 394 | /* Place to stash various statistics about this objfile. */ |
d82ea6a8 | 395 | OBJSTATS; |
5c4e30ca | 396 | |
34eaf542 TT |
397 | /* A linked list of symbols created when reading template types or |
398 | function templates. These symbols are not stored in any symbol | |
399 | table, so we have to keep them here to relocate them | |
400 | properly. */ | |
401 | struct symbol *template_symbols; | |
c5aa993b | 402 | }; |
c906108c | 403 | |
0df8b418 | 404 | /* Defines for the objfile flag word. */ |
c906108c | 405 | |
c906108c SS |
406 | /* When an object file has its functions reordered (currently Irix-5.2 |
407 | shared libraries exhibit this behaviour), we will need an expensive | |
408 | algorithm to locate a partial symtab or symtab via an address. | |
409 | To avoid this penalty for normal object files, we use this flag, | |
410 | whose setting is determined upon symbol table read in. */ | |
411 | ||
8b41ec65 | 412 | #define OBJF_REORDERED (1 << 0) /* Functions are reordered */ |
c5aa993b | 413 | |
2df3850c | 414 | /* Distinguish between an objfile for a shared library and a "vanilla" |
0df8b418 | 415 | objfile. (If not set, the objfile may still actually be a solib. |
2df3850c JM |
416 | This can happen if the user created the objfile by using the |
417 | add-symbol-file command. GDB doesn't in that situation actually | |
418 | check whether the file is a solib. Rather, the target's | |
419 | implementation of the solib interface is responsible for setting | |
420 | this flag when noticing solibs used by an inferior.) */ | |
c906108c | 421 | |
8b41ec65 | 422 | #define OBJF_SHARED (1 << 1) /* From a shared library */ |
c906108c | 423 | |
0df8b418 | 424 | /* User requested that this objfile be read in it's entirety. */ |
2acceee2 | 425 | |
8b41ec65 | 426 | #define OBJF_READNOW (1 << 2) /* Immediate full read */ |
2acceee2 | 427 | |
2df3850c JM |
428 | /* This objfile was created because the user explicitly caused it |
429 | (e.g., used the add-symbol-file command). This bit offers a way | |
430 | for run_command to remove old objfile entries which are no longer | |
431 | valid (i.e., are associated with an old inferior), but to preserve | |
432 | ones that the user explicitly loaded via the add-symbol-file | |
0df8b418 | 433 | command. */ |
2df3850c | 434 | |
8b41ec65 | 435 | #define OBJF_USERLOADED (1 << 3) /* User loaded */ |
2df3850c | 436 | |
b11896a5 TT |
437 | /* Set if we have tried to read partial symtabs for this objfile. |
438 | This is used to allow lazy reading of partial symtabs. */ | |
439 | ||
440 | #define OBJF_PSYMTABS_READ (1 << 4) | |
441 | ||
0838fb57 DE |
442 | /* Set if this is the main symbol file |
443 | (as opposed to symbol file for dynamically loaded code). */ | |
444 | ||
445 | #define OBJF_MAINLINE (1 << 5) | |
446 | ||
40135bb1 JK |
447 | /* ORIGINAL_NAME and OBFD->FILENAME correspond to text description unrelated to |
448 | filesystem names. It can be for example "<image in memory>". */ | |
449 | ||
450 | #define OBJF_NOT_FILENAME (1 << 6) | |
451 | ||
c906108c SS |
452 | /* Declarations for functions defined in objfiles.c */ |
453 | ||
24ba069a | 454 | extern struct objfile *allocate_objfile (bfd *, const char *name, int); |
c906108c | 455 | |
5e2b427d UW |
456 | extern struct gdbarch *get_objfile_arch (struct objfile *); |
457 | ||
abd0a5fa JK |
458 | extern int entry_point_address_query (CORE_ADDR *entry_p); |
459 | ||
9ab9195f EZ |
460 | extern CORE_ADDR entry_point_address (void); |
461 | ||
d82ea6a8 | 462 | extern void build_objfile_section_table (struct objfile *); |
c906108c | 463 | |
15831452 JB |
464 | extern void terminate_minimal_symbol_table (struct objfile *objfile); |
465 | ||
15d123c9 TG |
466 | extern struct objfile *objfile_separate_debug_iterate (const struct objfile *, |
467 | const struct objfile *); | |
468 | ||
5b5d99cf JB |
469 | extern void put_objfile_before (struct objfile *, struct objfile *); |
470 | ||
15d123c9 TG |
471 | extern void add_separate_debug_objfile (struct objfile *, struct objfile *); |
472 | ||
a14ed312 | 473 | extern void unlink_objfile (struct objfile *); |
c906108c | 474 | |
a14ed312 | 475 | extern void free_objfile (struct objfile *); |
c906108c | 476 | |
15d123c9 TG |
477 | extern void free_objfile_separate_debug (struct objfile *); |
478 | ||
74b7792f AC |
479 | extern struct cleanup *make_cleanup_free_objfile (struct objfile *); |
480 | ||
a14ed312 | 481 | extern void free_all_objfiles (void); |
c906108c | 482 | |
3189cb12 | 483 | extern void objfile_relocate (struct objfile *, const struct section_offsets *); |
4141a416 | 484 | extern void objfile_rebase (struct objfile *, CORE_ADDR); |
c906108c | 485 | |
55333a84 DE |
486 | extern int objfile_has_partial_symbols (struct objfile *objfile); |
487 | ||
488 | extern int objfile_has_full_symbols (struct objfile *objfile); | |
489 | ||
e361b228 TG |
490 | extern int objfile_has_symbols (struct objfile *objfile); |
491 | ||
a14ed312 | 492 | extern int have_partial_symbols (void); |
c906108c | 493 | |
a14ed312 | 494 | extern int have_full_symbols (void); |
c906108c | 495 | |
8fb8eb5c DE |
496 | extern void objfile_set_sym_fns (struct objfile *objfile, |
497 | const struct sym_fns *sf); | |
498 | ||
bb272892 | 499 | extern void objfiles_changed (void); |
63644780 NB |
500 | |
501 | extern int is_addr_in_objfile (CORE_ADDR addr, const struct objfile *objfile); | |
bb272892 | 502 | |
c906108c SS |
503 | /* This operation deletes all objfile entries that represent solibs that |
504 | weren't explicitly loaded by the user, via e.g., the add-symbol-file | |
0df8b418 MS |
505 | command. */ |
506 | ||
a14ed312 | 507 | extern void objfile_purge_solibs (void); |
c906108c SS |
508 | |
509 | /* Functions for dealing with the minimal symbol table, really a misc | |
510 | address<->symbol mapping for things we don't have debug symbols for. */ | |
511 | ||
a14ed312 | 512 | extern int have_minimal_symbols (void); |
c906108c | 513 | |
a14ed312 | 514 | extern struct obj_section *find_pc_section (CORE_ADDR pc); |
c906108c | 515 | |
3e5d3a5a MR |
516 | /* Return non-zero if PC is in a section called NAME. */ |
517 | extern int pc_in_section (CORE_ADDR, char *); | |
518 | ||
519 | /* Return non-zero if PC is in a SVR4-style procedure linkage table | |
520 | section. */ | |
521 | ||
522 | static inline int | |
523 | in_plt_section (CORE_ADDR pc) | |
524 | { | |
525 | return pc_in_section (pc, ".plt"); | |
526 | } | |
c906108c | 527 | |
0d0e1a63 MK |
528 | /* Keep a registry of per-objfile data-pointers required by other GDB |
529 | modules. */ | |
8e260fc0 | 530 | DECLARE_REGISTRY(objfile); |
e3c69974 | 531 | |
607ece04 GB |
532 | /* In normal use, the section map will be rebuilt by find_pc_section |
533 | if objfiles have been added, removed or relocated since it was last | |
534 | called. Calling inhibit_section_map_updates will inhibit this | |
535 | behavior until resume_section_map_updates is called. If you call | |
536 | inhibit_section_map_updates you must ensure that every call to | |
537 | find_pc_section in the inhibited region relates to a section that | |
538 | is already in the section map and has not since been removed or | |
539 | relocated. */ | |
540 | extern void inhibit_section_map_updates (struct program_space *pspace); | |
541 | ||
542 | /* Resume automatically rebuilding the section map as required. */ | |
543 | extern void resume_section_map_updates (struct program_space *pspace); | |
544 | ||
545 | /* Version of the above suitable for use as a cleanup. */ | |
546 | extern void resume_section_map_updates_cleanup (void *arg); | |
547 | ||
19630284 JB |
548 | extern void default_iterate_over_objfiles_in_search_order |
549 | (struct gdbarch *gdbarch, | |
550 | iterate_over_objfiles_in_search_order_cb_ftype *cb, | |
551 | void *cb_data, struct objfile *current_objfile); | |
0d0e1a63 MK |
552 | \f |
553 | ||
6c95b8df PA |
554 | /* Traverse all object files in the current program space. |
555 | ALL_OBJFILES_SAFE works even if you delete the objfile during the | |
556 | traversal. */ | |
557 | ||
558 | /* Traverse all object files in program space SS. */ | |
c906108c | 559 | |
6c95b8df | 560 | #define ALL_PSPACE_OBJFILES(ss, obj) \ |
81b52a3a | 561 | for ((obj) = ss->objfiles; (obj) != NULL; (obj) = (obj)->next) |
c906108c | 562 | |
6c95b8df PA |
563 | #define ALL_PSPACE_OBJFILES_SAFE(ss, obj, nxt) \ |
564 | for ((obj) = ss->objfiles; \ | |
565 | (obj) != NULL? ((nxt)=(obj)->next,1) :0; \ | |
566 | (obj) = (nxt)) | |
567 | ||
568 | #define ALL_OBJFILES(obj) \ | |
569 | for ((obj) = current_program_space->objfiles; \ | |
570 | (obj) != NULL; \ | |
571 | (obj) = (obj)->next) | |
572 | ||
573 | #define ALL_OBJFILES_SAFE(obj,nxt) \ | |
574 | for ((obj) = current_program_space->objfiles; \ | |
c906108c SS |
575 | (obj) != NULL? ((nxt)=(obj)->next,1) :0; \ |
576 | (obj) = (nxt)) | |
577 | ||
578 | /* Traverse all symtabs in one objfile. */ | |
579 | ||
580 | #define ALL_OBJFILE_SYMTABS(objfile, s) \ | |
581 | for ((s) = (objfile) -> symtabs; (s) != NULL; (s) = (s) -> next) | |
582 | ||
d790cf0a DE |
583 | /* Traverse all primary symtabs in one objfile. */ |
584 | ||
585 | #define ALL_OBJFILE_PRIMARY_SYMTABS(objfile, s) \ | |
586 | ALL_OBJFILE_SYMTABS ((objfile), (s)) \ | |
587 | if ((s)->primary) | |
588 | ||
c906108c SS |
589 | /* Traverse all minimal symbols in one objfile. */ |
590 | ||
591 | #define ALL_OBJFILE_MSYMBOLS(objfile, m) \ | |
3567439c | 592 | for ((m) = (objfile) -> msymbols; SYMBOL_LINKAGE_NAME(m) != NULL; (m)++) |
c906108c | 593 | |
6c95b8df PA |
594 | /* Traverse all symtabs in all objfiles in the current symbol |
595 | space. */ | |
c906108c SS |
596 | |
597 | #define ALL_SYMTABS(objfile, s) \ | |
598 | ALL_OBJFILES (objfile) \ | |
599 | ALL_OBJFILE_SYMTABS (objfile, s) | |
600 | ||
6c95b8df PA |
601 | #define ALL_PSPACE_SYMTABS(ss, objfile, s) \ |
602 | ALL_PSPACE_OBJFILES (ss, objfile) \ | |
603 | ALL_OBJFILE_SYMTABS (objfile, s) | |
604 | ||
605 | /* Traverse all symtabs in all objfiles in the current program space, | |
606 | skipping included files (which share a blockvector with their | |
607 | primary symtab). */ | |
11309657 DJ |
608 | |
609 | #define ALL_PRIMARY_SYMTABS(objfile, s) \ | |
610 | ALL_OBJFILES (objfile) \ | |
d790cf0a | 611 | ALL_OBJFILE_PRIMARY_SYMTABS (objfile, s) |
11309657 | 612 | |
6c95b8df PA |
613 | #define ALL_PSPACE_PRIMARY_SYMTABS(pspace, objfile, s) \ |
614 | ALL_PSPACE_OBJFILES (ss, objfile) \ | |
d790cf0a | 615 | ALL_OBJFILE_PRIMARY_SYMTABS (objfile, s) |
6c95b8df | 616 | |
6c95b8df PA |
617 | /* Traverse all minimal symbols in all objfiles in the current symbol |
618 | space. */ | |
c906108c SS |
619 | |
620 | #define ALL_MSYMBOLS(objfile, m) \ | |
621 | ALL_OBJFILES (objfile) \ | |
15831452 | 622 | ALL_OBJFILE_MSYMBOLS (objfile, m) |
c906108c SS |
623 | |
624 | #define ALL_OBJFILE_OSECTIONS(objfile, osect) \ | |
65cf3563 TT |
625 | for (osect = objfile->sections; osect < objfile->sections_end; osect++) \ |
626 | if (osect->the_bfd_section == NULL) \ | |
627 | { \ | |
628 | /* Nothing. */ \ | |
629 | } \ | |
630 | else | |
c906108c | 631 | |
96a8853a PA |
632 | /* Traverse all obj_sections in all objfiles in the current program |
633 | space. | |
634 | ||
635 | Note that this detects a "break" in the inner loop, and exits | |
636 | immediately from the outer loop as well, thus, client code doesn't | |
637 | need to know that this is implemented with a double for. The extra | |
638 | hair is to make sure that a "break;" stops the outer loop iterating | |
639 | as well, and both OBJFILE and OSECT are left unmodified: | |
640 | ||
641 | - The outer loop learns about the inner loop's end condition, and | |
642 | stops iterating if it detects the inner loop didn't reach its | |
643 | end. In other words, the outer loop keeps going only if the | |
644 | inner loop reached its end cleanly [(osect) == | |
645 | (objfile)->sections_end]. | |
646 | ||
647 | - OSECT is initialized in the outer loop initialization | |
648 | expressions, such as if the inner loop has reached its end, so | |
649 | the check mentioned above succeeds the first time. | |
650 | ||
651 | - The trick to not clearing OBJFILE on a "break;" is, in the outer | |
652 | loop's loop expression, advance OBJFILE, but iff the inner loop | |
653 | reached its end. If not, there was a "break;", so leave OBJFILE | |
654 | as is; the outer loop's conditional will break immediately as | |
0df8b418 | 655 | well (as OSECT will be different from OBJFILE->sections_end). */ |
96a8853a PA |
656 | |
657 | #define ALL_OBJSECTIONS(objfile, osect) \ | |
658 | for ((objfile) = current_program_space->objfiles, \ | |
659 | (objfile) != NULL ? ((osect) = (objfile)->sections_end) : 0; \ | |
660 | (objfile) != NULL \ | |
661 | && (osect) == (objfile)->sections_end; \ | |
662 | ((osect) == (objfile)->sections_end \ | |
663 | ? ((objfile) = (objfile)->next, \ | |
664 | (objfile) != NULL ? (osect) = (objfile)->sections_end : 0) \ | |
665 | : 0)) \ | |
65cf3563 | 666 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
c906108c | 667 | |
b8fbeb18 | 668 | #define SECT_OFF_DATA(objfile) \ |
8e65ff28 | 669 | ((objfile->sect_index_data == -1) \ |
3e43a32a MS |
670 | ? (internal_error (__FILE__, __LINE__, \ |
671 | _("sect_index_data not initialized")), -1) \ | |
8e65ff28 | 672 | : objfile->sect_index_data) |
b8fbeb18 EZ |
673 | |
674 | #define SECT_OFF_RODATA(objfile) \ | |
8e65ff28 | 675 | ((objfile->sect_index_rodata == -1) \ |
3e43a32a MS |
676 | ? (internal_error (__FILE__, __LINE__, \ |
677 | _("sect_index_rodata not initialized")), -1) \ | |
8e65ff28 | 678 | : objfile->sect_index_rodata) |
b8fbeb18 EZ |
679 | |
680 | #define SECT_OFF_TEXT(objfile) \ | |
8e65ff28 | 681 | ((objfile->sect_index_text == -1) \ |
3e43a32a MS |
682 | ? (internal_error (__FILE__, __LINE__, \ |
683 | _("sect_index_text not initialized")), -1) \ | |
8e65ff28 | 684 | : objfile->sect_index_text) |
b8fbeb18 | 685 | |
a4c8257b | 686 | /* Sometimes the .bss section is missing from the objfile, so we don't |
0df8b418 MS |
687 | want to die here. Let the users of SECT_OFF_BSS deal with an |
688 | uninitialized section index. */ | |
a4c8257b | 689 | #define SECT_OFF_BSS(objfile) (objfile)->sect_index_bss |
b8fbeb18 | 690 | |
c14c28ba PP |
691 | /* Answer whether there is more than one object file loaded. */ |
692 | ||
693 | #define MULTI_OBJFILE_P() (object_files && object_files->next) | |
694 | ||
706e3705 TT |
695 | /* Reset the per-BFD storage area on OBJ. */ |
696 | ||
697 | void set_objfile_per_bfd (struct objfile *obj); | |
698 | ||
4262abfb JK |
699 | const char *objfile_name (const struct objfile *objfile); |
700 | ||
3d548a53 TT |
701 | /* Set the objfile's notion of the "main" name and language. */ |
702 | ||
703 | extern void set_objfile_main_name (struct objfile *objfile, | |
704 | const char *name, enum language lang); | |
705 | ||
c5aa993b | 706 | #endif /* !defined (OBJFILES_H) */ |