Commit | Line | Data |
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c906108c | 1 | /* Definitions for symbol file management in GDB. |
af5f3db6 | 2 | |
6aba47ca | 3 | Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
0fb0cc75 | 4 | 2002, 2003, 2004, 2007, 2008, 2009 Free Software Foundation, Inc. |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 11 | (at your option) any later version. |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b | 18 | You should have received a copy of the GNU General Public License |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
20 | |
21 | #if !defined (OBJFILES_H) | |
22 | #define OBJFILES_H | |
23 | ||
3956d554 JB |
24 | #include "gdb_obstack.h" /* For obstack internals. */ |
25 | #include "symfile.h" /* For struct psymbol_allocation_list */ | |
26 | ||
af5f3db6 | 27 | struct bcache; |
2de7ced7 | 28 | struct htab; |
5c4e30ca | 29 | struct symtab; |
4a4b3fed | 30 | struct objfile_data; |
08c0b5bc | 31 | |
c906108c SS |
32 | /* This structure maintains information on a per-objfile basis about the |
33 | "entry point" of the objfile, and the scope within which the entry point | |
34 | exists. It is possible that gdb will see more than one objfile that is | |
35 | executable, each with its own entry point. | |
36 | ||
37 | For example, for dynamically linked executables in SVR4, the dynamic linker | |
38 | code is contained within the shared C library, which is actually executable | |
39 | and is run by the kernel first when an exec is done of a user executable | |
40 | that is dynamically linked. The dynamic linker within the shared C library | |
41 | then maps in the various program segments in the user executable and jumps | |
42 | to the user executable's recorded entry point, as if the call had been made | |
43 | directly by the kernel. | |
44 | ||
73c1e0a1 AC |
45 | The traditional gdb method of using this info was to use the |
46 | recorded entry point to set the entry-file's lowpc and highpc from | |
627b3ba2 AC |
47 | the debugging information, where these values are the starting |
48 | address (inclusive) and ending address (exclusive) of the | |
49 | instruction space in the executable which correspond to the | |
50 | "startup file", I.E. crt0.o in most cases. This file is assumed to | |
51 | be a startup file and frames with pc's inside it are treated as | |
52 | nonexistent. Setting these variables is necessary so that | |
53 | backtraces do not fly off the bottom of the stack. | |
54 | ||
55 | NOTE: cagney/2003-09-09: It turns out that this "traditional" | |
56 | method doesn't work. Corinna writes: ``It turns out that the call | |
2f72f850 | 57 | to test for "inside entry file" destroys a meaningful backtrace |
627b3ba2 AC |
58 | under some conditions. E. g. the backtrace tests in the asm-source |
59 | testcase are broken for some targets. In this test the functions | |
60 | are all implemented as part of one file and the testcase is not | |
61 | necessarily linked with a start file (depending on the target). | |
62 | What happens is, that the first frame is printed normaly and | |
63 | following frames are treated as being inside the enttry file then. | |
64 | This way, only the #0 frame is printed in the backtrace output.'' | |
65 | Ref "frame.c" "NOTE: vinschen/2003-04-01". | |
c906108c SS |
66 | |
67 | Gdb also supports an alternate method to avoid running off the bottom | |
68 | of the stack. | |
69 | ||
70 | There are two frames that are "special", the frame for the function | |
71 | containing the process entry point, since it has no predecessor frame, | |
72 | and the frame for the function containing the user code entry point | |
73 | (the main() function), since all the predecessor frames are for the | |
74 | process startup code. Since we have no guarantee that the linked | |
75 | in startup modules have any debugging information that gdb can use, | |
76 | we need to avoid following frame pointers back into frames that might | |
77 | have been built in the startup code, as we might get hopelessly | |
78 | confused. However, we almost always have debugging information | |
79 | available for main(). | |
80 | ||
618ce49f AC |
81 | These variables are used to save the range of PC values which are |
82 | valid within the main() function and within the function containing | |
83 | the process entry point. If we always consider the frame for | |
84 | main() as the outermost frame when debugging user code, and the | |
85 | frame for the process entry point function as the outermost frame | |
86 | when debugging startup code, then all we have to do is have | |
87 | DEPRECATED_FRAME_CHAIN_VALID return false whenever a frame's | |
88 | current PC is within the range specified by these variables. In | |
89 | essence, we set "ceilings" in the frame chain beyond which we will | |
c906108c SS |
90 | not proceed when following the frame chain back up the stack. |
91 | ||
92 | A nice side effect is that we can still debug startup code without | |
93 | running off the end of the frame chain, assuming that we have usable | |
94 | debugging information in the startup modules, and if we choose to not | |
95 | use the block at main, or can't find it for some reason, everything | |
96 | still works as before. And if we have no startup code debugging | |
97 | information but we do have usable information for main(), backtraces | |
6e4c6c91 | 98 | from user code don't go wandering off into the startup code. */ |
c906108c SS |
99 | |
100 | struct entry_info | |
c5aa993b | 101 | { |
c906108c | 102 | |
c5aa993b JM |
103 | /* The value we should use for this objects entry point. |
104 | The illegal/unknown value needs to be something other than 0, ~0 | |
105 | for instance, which is much less likely than 0. */ | |
c906108c | 106 | |
c5aa993b | 107 | CORE_ADDR entry_point; |
c906108c | 108 | |
c5aa993b | 109 | #define INVALID_ENTRY_POINT (~0) /* ~0 will not be in any file, we hope. */ |
c906108c | 110 | |
c5aa993b | 111 | }; |
c906108c | 112 | |
f1f6aadf PA |
113 | /* Sections in an objfile. The section offsets are stored in the |
114 | OBJFILE. */ | |
c906108c | 115 | |
c5aa993b JM |
116 | struct obj_section |
117 | { | |
7be0c536 | 118 | struct bfd_section *the_bfd_section; /* BFD section pointer */ |
c906108c | 119 | |
c5aa993b JM |
120 | /* Objfile this section is part of. */ |
121 | struct objfile *objfile; | |
c906108c | 122 | |
c5aa993b JM |
123 | /* True if this "overlay section" is mapped into an "overlay region". */ |
124 | int ovly_mapped; | |
125 | }; | |
c906108c | 126 | |
f1f6aadf PA |
127 | /* Relocation offset applied to S. */ |
128 | #define obj_section_offset(s) \ | |
129 | (((s)->objfile->section_offsets)->offsets[(s)->the_bfd_section->index]) | |
130 | ||
131 | /* The memory address of section S (vma + offset). */ | |
132 | #define obj_section_addr(s) \ | |
133 | (bfd_get_section_vma ((s)->objfile->abfd, s->the_bfd_section) \ | |
134 | + obj_section_offset (s)) | |
135 | ||
136 | /* The one-passed-the-end memory address of section S | |
137 | (vma + size + offset). */ | |
138 | #define obj_section_endaddr(s) \ | |
139 | (bfd_get_section_vma ((s)->objfile->abfd, s->the_bfd_section) \ | |
140 | + bfd_get_section_size ((s)->the_bfd_section) \ | |
141 | + obj_section_offset (s)) | |
c906108c | 142 | |
c906108c SS |
143 | /* The "objstats" structure provides a place for gdb to record some |
144 | interesting information about its internal state at runtime, on a | |
145 | per objfile basis, such as information about the number of symbols | |
146 | read, size of string table (if any), etc. */ | |
147 | ||
c5aa993b JM |
148 | struct objstats |
149 | { | |
150 | int n_minsyms; /* Number of minimal symbols read */ | |
151 | int n_psyms; /* Number of partial symbols read */ | |
152 | int n_syms; /* Number of full symbols read */ | |
153 | int n_stabs; /* Number of ".stabs" read (if applicable) */ | |
154 | int n_types; /* Number of types */ | |
155 | int sz_strtab; /* Size of stringtable, (if applicable) */ | |
156 | }; | |
c906108c SS |
157 | |
158 | #define OBJSTAT(objfile, expr) (objfile -> stats.expr) | |
159 | #define OBJSTATS struct objstats stats | |
a14ed312 KB |
160 | extern void print_objfile_statistics (void); |
161 | extern void print_symbol_bcache_statistics (void); | |
c906108c | 162 | |
9227b5eb | 163 | /* Number of entries in the minimal symbol hash table. */ |
375f3d86 | 164 | #define MINIMAL_SYMBOL_HASH_SIZE 2039 |
9227b5eb | 165 | |
c906108c SS |
166 | /* Master structure for keeping track of each file from which |
167 | gdb reads symbols. There are several ways these get allocated: 1. | |
168 | The main symbol file, symfile_objfile, set by the symbol-file command, | |
169 | 2. Additional symbol files added by the add-symbol-file command, | |
170 | 3. Shared library objfiles, added by ADD_SOLIB, 4. symbol files | |
171 | for modules that were loaded when GDB attached to a remote system | |
172 | (see remote-vx.c). */ | |
173 | ||
174 | struct objfile | |
c5aa993b | 175 | { |
c906108c | 176 | |
c5aa993b JM |
177 | /* All struct objfile's are chained together by their next pointers. |
178 | The global variable "object_files" points to the first link in this | |
179 | chain. | |
c906108c | 180 | |
c5aa993b JM |
181 | FIXME: There is a problem here if the objfile is reusable, and if |
182 | multiple users are to be supported. The problem is that the objfile | |
183 | list is linked through a member of the objfile struct itself, which | |
184 | is only valid for one gdb process. The list implementation needs to | |
185 | be changed to something like: | |
c906108c | 186 | |
c5aa993b | 187 | struct list {struct list *next; struct objfile *objfile}; |
c906108c | 188 | |
c5aa993b JM |
189 | where the list structure is completely maintained separately within |
190 | each gdb process. */ | |
c906108c | 191 | |
c5aa993b | 192 | struct objfile *next; |
c906108c | 193 | |
c63f977f JB |
194 | /* The object file's name, tilde-expanded and absolute. |
195 | Malloc'd; free it if you free this struct. */ | |
c906108c | 196 | |
c5aa993b | 197 | char *name; |
c906108c | 198 | |
c5aa993b | 199 | /* Some flag bits for this objfile. */ |
c906108c | 200 | |
c5aa993b | 201 | unsigned short flags; |
c906108c | 202 | |
c5aa993b JM |
203 | /* Each objfile points to a linked list of symtabs derived from this file, |
204 | one symtab structure for each compilation unit (source file). Each link | |
205 | in the symtab list contains a backpointer to this objfile. */ | |
c906108c | 206 | |
c5aa993b | 207 | struct symtab *symtabs; |
c906108c | 208 | |
c5aa993b JM |
209 | /* Each objfile points to a linked list of partial symtabs derived from |
210 | this file, one partial symtab structure for each compilation unit | |
211 | (source file). */ | |
c906108c | 212 | |
c5aa993b | 213 | struct partial_symtab *psymtabs; |
c906108c | 214 | |
ff013f42 JK |
215 | /* Map addresses to the entries of PSYMTABS. It would be more efficient to |
216 | have a map per the whole process but ADDRMAP cannot selectively remove | |
217 | its items during FREE_OBJFILE. This mapping is already present even for | |
218 | PARTIAL_SYMTABs which still have no corresponding full SYMTABs read. */ | |
219 | ||
220 | struct addrmap *psymtabs_addrmap; | |
221 | ||
c5aa993b | 222 | /* List of freed partial symtabs, available for re-use */ |
c906108c | 223 | |
c5aa993b | 224 | struct partial_symtab *free_psymtabs; |
c906108c | 225 | |
c5aa993b JM |
226 | /* The object file's BFD. Can be null if the objfile contains only |
227 | minimal symbols, e.g. the run time common symbols for SunOS4. */ | |
c906108c | 228 | |
c5aa993b | 229 | bfd *obfd; |
c906108c | 230 | |
5e2b427d UW |
231 | /* The gdbarch associated with the BFD. Note that this gdbarch is |
232 | determined solely from BFD information, without looking at target | |
233 | information. The gdbarch determined from a running target may | |
234 | differ from this e.g. with respect to register types and names. */ | |
235 | ||
236 | struct gdbarch *gdbarch; | |
237 | ||
c5aa993b JM |
238 | /* The modification timestamp of the object file, as of the last time |
239 | we read its symbols. */ | |
c906108c | 240 | |
c5aa993b | 241 | long mtime; |
c906108c | 242 | |
b99607ea EZ |
243 | /* Obstack to hold objects that should be freed when we load a new symbol |
244 | table from this object file. */ | |
245 | ||
b99607ea EZ |
246 | struct obstack objfile_obstack; |
247 | ||
c5aa993b JM |
248 | /* A byte cache where we can stash arbitrary "chunks" of bytes that |
249 | will not change. */ | |
c906108c | 250 | |
af5f3db6 AC |
251 | struct bcache *psymbol_cache; /* Byte cache for partial syms */ |
252 | struct bcache *macro_cache; /* Byte cache for macros */ | |
c906108c | 253 | |
2de7ced7 DJ |
254 | /* Hash table for mapping symbol names to demangled names. Each |
255 | entry in the hash table is actually two consecutive strings, | |
256 | both null-terminated; the first one is a mangled or linkage | |
257 | name, and the second is the demangled name or just a zero byte | |
258 | if the name doesn't demangle. */ | |
259 | struct htab *demangled_names_hash; | |
260 | ||
c5aa993b | 261 | /* Vectors of all partial symbols read in from file. The actual data |
8b92e4d5 | 262 | is stored in the objfile_obstack. */ |
c906108c | 263 | |
c5aa993b JM |
264 | struct psymbol_allocation_list global_psymbols; |
265 | struct psymbol_allocation_list static_psymbols; | |
c906108c | 266 | |
c5aa993b JM |
267 | /* Each file contains a pointer to an array of minimal symbols for all |
268 | global symbols that are defined within the file. The array is terminated | |
269 | by a "null symbol", one that has a NULL pointer for the name and a zero | |
270 | value for the address. This makes it easy to walk through the array | |
271 | when passed a pointer to somewhere in the middle of it. There is also | |
272 | a count of the number of symbols, which does not include the terminating | |
273 | null symbol. The array itself, as well as all the data that it points | |
4a146b47 | 274 | to, should be allocated on the objfile_obstack for this file. */ |
c906108c | 275 | |
c5aa993b JM |
276 | struct minimal_symbol *msymbols; |
277 | int minimal_symbol_count; | |
c906108c | 278 | |
9227b5eb JB |
279 | /* This is a hash table used to index the minimal symbols by name. */ |
280 | ||
281 | struct minimal_symbol *msymbol_hash[MINIMAL_SYMBOL_HASH_SIZE]; | |
282 | ||
283 | /* This hash table is used to index the minimal symbols by their | |
284 | demangled names. */ | |
285 | ||
286 | struct minimal_symbol *msymbol_demangled_hash[MINIMAL_SYMBOL_HASH_SIZE]; | |
287 | ||
c5aa993b JM |
288 | /* Structure which keeps track of functions that manipulate objfile's |
289 | of the same type as this objfile. I.E. the function to read partial | |
290 | symbols for example. Note that this structure is in statically | |
291 | allocated memory, and is shared by all objfiles that use the | |
292 | object module reader of this type. */ | |
c906108c | 293 | |
c5aa993b | 294 | struct sym_fns *sf; |
c906108c | 295 | |
c5aa993b JM |
296 | /* The per-objfile information about the entry point, the scope (file/func) |
297 | containing the entry point, and the scope of the user's main() func. */ | |
c906108c | 298 | |
c5aa993b | 299 | struct entry_info ei; |
c906108c | 300 | |
c5aa993b JM |
301 | /* Information about stabs. Will be filled in with a dbx_symfile_info |
302 | struct by those readers that need it. */ | |
0a6ddd08 AC |
303 | /* NOTE: cagney/2004-10-23: This has been replaced by per-objfile |
304 | data points implemented using "data" and "num_data" below. For | |
305 | an example of how to use this replacement, see "objfile_data" | |
306 | in "mips-tdep.c". */ | |
c906108c | 307 | |
0a6ddd08 | 308 | struct dbx_symfile_info *deprecated_sym_stab_info; |
c906108c | 309 | |
c5aa993b JM |
310 | /* Hook for information for use by the symbol reader (currently used |
311 | for information shared by sym_init and sym_read). It is | |
312 | typically a pointer to malloc'd memory. The symbol reader's finish | |
313 | function is responsible for freeing the memory thusly allocated. */ | |
0a6ddd08 AC |
314 | /* NOTE: cagney/2004-10-23: This has been replaced by per-objfile |
315 | data points implemented using "data" and "num_data" below. For | |
316 | an example of how to use this replacement, see "objfile_data" | |
317 | in "mips-tdep.c". */ | |
c906108c | 318 | |
0a6ddd08 | 319 | void *deprecated_sym_private; |
c906108c | 320 | |
0d0e1a63 MK |
321 | /* Per objfile data-pointers required by other GDB modules. */ |
322 | /* FIXME: kettenis/20030711: This mechanism could replace | |
f98dfd4b TT |
323 | deprecated_sym_stab_info and deprecated_sym_private |
324 | entirely. */ | |
0d0e1a63 MK |
325 | |
326 | void **data; | |
327 | unsigned num_data; | |
328 | ||
c5aa993b | 329 | /* Set of relocation offsets to apply to each section. |
8b92e4d5 | 330 | Currently on the objfile_obstack (which makes no sense, but I'm |
c5aa993b | 331 | not sure it's harming anything). |
c906108c | 332 | |
c5aa993b JM |
333 | These offsets indicate that all symbols (including partial and |
334 | minimal symbols) which have been read have been relocated by this | |
335 | much. Symbols which are yet to be read need to be relocated by | |
336 | it. */ | |
c906108c | 337 | |
c5aa993b JM |
338 | struct section_offsets *section_offsets; |
339 | int num_sections; | |
c906108c | 340 | |
b8fbeb18 EZ |
341 | /* Indexes in the section_offsets array. These are initialized by the |
342 | *_symfile_offsets() family of functions (som_symfile_offsets, | |
343 | xcoff_symfile_offsets, default_symfile_offsets). In theory they | |
344 | should correspond to the section indexes used by bfd for the | |
345 | current objfile. The exception to this for the time being is the | |
346 | SOM version. */ | |
347 | ||
348 | int sect_index_text; | |
349 | int sect_index_data; | |
350 | int sect_index_bss; | |
351 | int sect_index_rodata; | |
352 | ||
96baa820 | 353 | /* These pointers are used to locate the section table, which |
5c44784c | 354 | among other things, is used to map pc addresses into sections. |
96baa820 JM |
355 | SECTIONS points to the first entry in the table, and |
356 | SECTIONS_END points to the first location past the last entry | |
357 | in the table. Currently the table is stored on the | |
8b92e4d5 | 358 | objfile_obstack (which makes no sense, but I'm not sure it's |
96baa820 | 359 | harming anything). */ |
c906108c | 360 | |
c5aa993b JM |
361 | struct obj_section |
362 | *sections, *sections_end; | |
c906108c | 363 | |
5b5d99cf JB |
364 | /* Link to objfile that contains the debug symbols for this one. |
365 | One is loaded if this file has an debug link to an existing | |
366 | debug file with the right checksum */ | |
367 | struct objfile *separate_debug_objfile; | |
368 | ||
369 | /* If this is a separate debug object, this is used as a link to the | |
370 | actual executable objfile. */ | |
371 | struct objfile *separate_debug_objfile_backlink; | |
372 | ||
c5aa993b JM |
373 | /* Place to stash various statistics about this objfile */ |
374 | OBJSTATS; | |
5c4e30ca DC |
375 | |
376 | /* A symtab that the C++ code uses to stash special symbols | |
377 | associated to namespaces. */ | |
378 | ||
379 | /* FIXME/carlton-2003-06-27: Delete this in a few years once | |
380 | "possible namespace symbols" go away. */ | |
381 | struct symtab *cp_namespace_symtab; | |
c5aa993b | 382 | }; |
c906108c SS |
383 | |
384 | /* Defines for the objfile flag word. */ | |
385 | ||
c906108c SS |
386 | /* When an object file has its functions reordered (currently Irix-5.2 |
387 | shared libraries exhibit this behaviour), we will need an expensive | |
388 | algorithm to locate a partial symtab or symtab via an address. | |
389 | To avoid this penalty for normal object files, we use this flag, | |
390 | whose setting is determined upon symbol table read in. */ | |
391 | ||
8b41ec65 | 392 | #define OBJF_REORDERED (1 << 0) /* Functions are reordered */ |
c5aa993b | 393 | |
2df3850c JM |
394 | /* Distinguish between an objfile for a shared library and a "vanilla" |
395 | objfile. (If not set, the objfile may still actually be a solib. | |
396 | This can happen if the user created the objfile by using the | |
397 | add-symbol-file command. GDB doesn't in that situation actually | |
398 | check whether the file is a solib. Rather, the target's | |
399 | implementation of the solib interface is responsible for setting | |
400 | this flag when noticing solibs used by an inferior.) */ | |
c906108c | 401 | |
8b41ec65 | 402 | #define OBJF_SHARED (1 << 1) /* From a shared library */ |
c906108c | 403 | |
2acceee2 JM |
404 | /* User requested that this objfile be read in it's entirety. */ |
405 | ||
8b41ec65 | 406 | #define OBJF_READNOW (1 << 2) /* Immediate full read */ |
2acceee2 | 407 | |
2df3850c JM |
408 | /* This objfile was created because the user explicitly caused it |
409 | (e.g., used the add-symbol-file command). This bit offers a way | |
410 | for run_command to remove old objfile entries which are no longer | |
411 | valid (i.e., are associated with an old inferior), but to preserve | |
412 | ones that the user explicitly loaded via the add-symbol-file | |
413 | command. */ | |
414 | ||
8b41ec65 | 415 | #define OBJF_USERLOADED (1 << 3) /* User loaded */ |
2df3850c | 416 | |
572d275c UW |
417 | /* The bfd of this objfile is used outside of the objfile (e.g. by solib). |
418 | Do not try to free it. */ | |
419 | ||
420 | #define OBJF_KEEPBFD (1 << 4) /* Do not delete bfd */ | |
421 | ||
422 | ||
c906108c SS |
423 | /* The object file that the main symbol table was loaded from (e.g. the |
424 | argument to the "symbol-file" or "file" command). */ | |
425 | ||
426 | extern struct objfile *symfile_objfile; | |
427 | ||
428 | /* The object file that contains the runtime common minimal symbols | |
429 | for SunOS4. Note that this objfile has no associated BFD. */ | |
430 | ||
431 | extern struct objfile *rt_common_objfile; | |
432 | ||
b99607ea | 433 | /* When we need to allocate a new type, we need to know which objfile_obstack |
c906108c SS |
434 | to allocate the type on, since there is one for each objfile. The places |
435 | where types are allocated are deeply buried in function call hierarchies | |
436 | which know nothing about objfiles, so rather than trying to pass a | |
437 | particular objfile down to them, we just do an end run around them and | |
438 | set current_objfile to be whatever objfile we expect to be using at the | |
439 | time types are being allocated. For instance, when we start reading | |
440 | symbols for a particular objfile, we set current_objfile to point to that | |
441 | objfile, and when we are done, we set it back to NULL, to ensure that we | |
442 | never put a type someplace other than where we are expecting to put it. | |
443 | FIXME: Maybe we should review the entire type handling system and | |
444 | see if there is a better way to avoid this problem. */ | |
445 | ||
446 | extern struct objfile *current_objfile; | |
447 | ||
448 | /* All known objfiles are kept in a linked list. This points to the | |
449 | root of this list. */ | |
450 | ||
451 | extern struct objfile *object_files; | |
452 | ||
453 | /* Declarations for functions defined in objfiles.c */ | |
454 | ||
a14ed312 | 455 | extern struct objfile *allocate_objfile (bfd *, int); |
c906108c | 456 | |
5e2b427d UW |
457 | extern struct gdbarch *get_objfile_arch (struct objfile *); |
458 | ||
9ab9195f EZ |
459 | extern void init_entry_point_info (struct objfile *); |
460 | ||
461 | extern CORE_ADDR entry_point_address (void); | |
462 | ||
a14ed312 | 463 | extern int build_objfile_section_table (struct objfile *); |
c906108c | 464 | |
15831452 JB |
465 | extern void terminate_minimal_symbol_table (struct objfile *objfile); |
466 | ||
5b5d99cf JB |
467 | extern void put_objfile_before (struct objfile *, struct objfile *); |
468 | ||
a14ed312 | 469 | extern void objfile_to_front (struct objfile *); |
c906108c | 470 | |
a14ed312 | 471 | extern void unlink_objfile (struct objfile *); |
c906108c | 472 | |
a14ed312 | 473 | extern void free_objfile (struct objfile *); |
c906108c | 474 | |
74b7792f AC |
475 | extern struct cleanup *make_cleanup_free_objfile (struct objfile *); |
476 | ||
a14ed312 | 477 | extern void free_all_objfiles (void); |
c906108c | 478 | |
a14ed312 | 479 | extern void objfile_relocate (struct objfile *, struct section_offsets *); |
c906108c | 480 | |
a14ed312 | 481 | extern int have_partial_symbols (void); |
c906108c | 482 | |
a14ed312 | 483 | extern int have_full_symbols (void); |
c906108c | 484 | |
bb272892 PP |
485 | extern void objfiles_changed (void); |
486 | ||
c906108c SS |
487 | /* This operation deletes all objfile entries that represent solibs that |
488 | weren't explicitly loaded by the user, via e.g., the add-symbol-file | |
489 | command. | |
c5aa993b | 490 | */ |
a14ed312 | 491 | extern void objfile_purge_solibs (void); |
c906108c SS |
492 | |
493 | /* Functions for dealing with the minimal symbol table, really a misc | |
494 | address<->symbol mapping for things we don't have debug symbols for. */ | |
495 | ||
a14ed312 | 496 | extern int have_minimal_symbols (void); |
c906108c | 497 | |
a14ed312 | 498 | extern struct obj_section *find_pc_section (CORE_ADDR pc); |
c906108c | 499 | |
a14ed312 | 500 | extern int in_plt_section (CORE_ADDR, char *); |
c906108c | 501 | |
0d0e1a63 MK |
502 | /* Keep a registry of per-objfile data-pointers required by other GDB |
503 | modules. */ | |
504 | ||
505 | extern const struct objfile_data *register_objfile_data (void); | |
60c5725c DJ |
506 | extern const struct objfile_data *register_objfile_data_with_cleanup |
507 | (void (*cleanup) (struct objfile *, void *)); | |
7b097ae3 | 508 | extern void clear_objfile_data (struct objfile *objfile); |
0d0e1a63 MK |
509 | extern void set_objfile_data (struct objfile *objfile, |
510 | const struct objfile_data *data, void *value); | |
511 | extern void *objfile_data (struct objfile *objfile, | |
512 | const struct objfile_data *data); | |
513 | \f | |
514 | ||
c906108c SS |
515 | /* Traverse all object files. ALL_OBJFILES_SAFE works even if you delete |
516 | the objfile during the traversal. */ | |
517 | ||
518 | #define ALL_OBJFILES(obj) \ | |
519 | for ((obj) = object_files; (obj) != NULL; (obj) = (obj)->next) | |
520 | ||
521 | #define ALL_OBJFILES_SAFE(obj,nxt) \ | |
522 | for ((obj) = object_files; \ | |
523 | (obj) != NULL? ((nxt)=(obj)->next,1) :0; \ | |
524 | (obj) = (nxt)) | |
525 | ||
526 | /* Traverse all symtabs in one objfile. */ | |
527 | ||
528 | #define ALL_OBJFILE_SYMTABS(objfile, s) \ | |
529 | for ((s) = (objfile) -> symtabs; (s) != NULL; (s) = (s) -> next) | |
530 | ||
531 | /* Traverse all psymtabs in one objfile. */ | |
532 | ||
533 | #define ALL_OBJFILE_PSYMTABS(objfile, p) \ | |
534 | for ((p) = (objfile) -> psymtabs; (p) != NULL; (p) = (p) -> next) | |
535 | ||
536 | /* Traverse all minimal symbols in one objfile. */ | |
537 | ||
538 | #define ALL_OBJFILE_MSYMBOLS(objfile, m) \ | |
3567439c | 539 | for ((m) = (objfile) -> msymbols; SYMBOL_LINKAGE_NAME(m) != NULL; (m)++) |
c906108c SS |
540 | |
541 | /* Traverse all symtabs in all objfiles. */ | |
542 | ||
543 | #define ALL_SYMTABS(objfile, s) \ | |
544 | ALL_OBJFILES (objfile) \ | |
545 | ALL_OBJFILE_SYMTABS (objfile, s) | |
546 | ||
11309657 DJ |
547 | /* Traverse all symtabs in all objfiles, skipping included files |
548 | (which share a blockvector with their primary symtab). */ | |
549 | ||
550 | #define ALL_PRIMARY_SYMTABS(objfile, s) \ | |
551 | ALL_OBJFILES (objfile) \ | |
552 | ALL_OBJFILE_SYMTABS (objfile, s) \ | |
553 | if ((s)->primary) | |
554 | ||
c906108c SS |
555 | /* Traverse all psymtabs in all objfiles. */ |
556 | ||
557 | #define ALL_PSYMTABS(objfile, p) \ | |
558 | ALL_OBJFILES (objfile) \ | |
559 | ALL_OBJFILE_PSYMTABS (objfile, p) | |
560 | ||
561 | /* Traverse all minimal symbols in all objfiles. */ | |
562 | ||
563 | #define ALL_MSYMBOLS(objfile, m) \ | |
564 | ALL_OBJFILES (objfile) \ | |
15831452 | 565 | ALL_OBJFILE_MSYMBOLS (objfile, m) |
c906108c SS |
566 | |
567 | #define ALL_OBJFILE_OSECTIONS(objfile, osect) \ | |
568 | for (osect = objfile->sections; osect < objfile->sections_end; osect++) | |
569 | ||
570 | #define ALL_OBJSECTIONS(objfile, osect) \ | |
571 | ALL_OBJFILES (objfile) \ | |
572 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
573 | ||
b8fbeb18 | 574 | #define SECT_OFF_DATA(objfile) \ |
8e65ff28 | 575 | ((objfile->sect_index_data == -1) \ |
e2e0b3e5 | 576 | ? (internal_error (__FILE__, __LINE__, _("sect_index_data not initialized")), -1) \ |
8e65ff28 | 577 | : objfile->sect_index_data) |
b8fbeb18 EZ |
578 | |
579 | #define SECT_OFF_RODATA(objfile) \ | |
8e65ff28 | 580 | ((objfile->sect_index_rodata == -1) \ |
e2e0b3e5 | 581 | ? (internal_error (__FILE__, __LINE__, _("sect_index_rodata not initialized")), -1) \ |
8e65ff28 | 582 | : objfile->sect_index_rodata) |
b8fbeb18 EZ |
583 | |
584 | #define SECT_OFF_TEXT(objfile) \ | |
8e65ff28 | 585 | ((objfile->sect_index_text == -1) \ |
e2e0b3e5 | 586 | ? (internal_error (__FILE__, __LINE__, _("sect_index_text not initialized")), -1) \ |
8e65ff28 | 587 | : objfile->sect_index_text) |
b8fbeb18 | 588 | |
a4c8257b EZ |
589 | /* Sometimes the .bss section is missing from the objfile, so we don't |
590 | want to die here. Let the users of SECT_OFF_BSS deal with an | |
591 | uninitialized section index. */ | |
592 | #define SECT_OFF_BSS(objfile) (objfile)->sect_index_bss | |
b8fbeb18 | 593 | |
c14c28ba PP |
594 | /* Answer whether there is more than one object file loaded. */ |
595 | ||
596 | #define MULTI_OBJFILE_P() (object_files && object_files->next) | |
597 | ||
c5aa993b | 598 | #endif /* !defined (OBJFILES_H) */ |