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 */ | |
6c95b8df | 26 | #include "progspace.h" |
3956d554 | 27 | |
af5f3db6 | 28 | struct bcache; |
2de7ced7 | 29 | struct htab; |
5c4e30ca | 30 | struct symtab; |
4a4b3fed | 31 | struct objfile_data; |
08c0b5bc | 32 | |
c906108c SS |
33 | /* This structure maintains information on a per-objfile basis about the |
34 | "entry point" of the objfile, and the scope within which the entry point | |
35 | exists. It is possible that gdb will see more than one objfile that is | |
36 | executable, each with its own entry point. | |
37 | ||
38 | For example, for dynamically linked executables in SVR4, the dynamic linker | |
39 | code is contained within the shared C library, which is actually executable | |
40 | and is run by the kernel first when an exec is done of a user executable | |
41 | that is dynamically linked. The dynamic linker within the shared C library | |
42 | then maps in the various program segments in the user executable and jumps | |
43 | to the user executable's recorded entry point, as if the call had been made | |
44 | directly by the kernel. | |
45 | ||
73c1e0a1 AC |
46 | The traditional gdb method of using this info was to use the |
47 | recorded entry point to set the entry-file's lowpc and highpc from | |
627b3ba2 AC |
48 | the debugging information, where these values are the starting |
49 | address (inclusive) and ending address (exclusive) of the | |
50 | instruction space in the executable which correspond to the | |
51 | "startup file", I.E. crt0.o in most cases. This file is assumed to | |
52 | be a startup file and frames with pc's inside it are treated as | |
53 | nonexistent. Setting these variables is necessary so that | |
54 | backtraces do not fly off the bottom of the stack. | |
55 | ||
56 | NOTE: cagney/2003-09-09: It turns out that this "traditional" | |
57 | method doesn't work. Corinna writes: ``It turns out that the call | |
2f72f850 | 58 | to test for "inside entry file" destroys a meaningful backtrace |
627b3ba2 AC |
59 | under some conditions. E. g. the backtrace tests in the asm-source |
60 | testcase are broken for some targets. In this test the functions | |
61 | are all implemented as part of one file and the testcase is not | |
62 | necessarily linked with a start file (depending on the target). | |
63 | What happens is, that the first frame is printed normaly and | |
64 | following frames are treated as being inside the enttry file then. | |
65 | This way, only the #0 frame is printed in the backtrace output.'' | |
66 | Ref "frame.c" "NOTE: vinschen/2003-04-01". | |
c906108c SS |
67 | |
68 | Gdb also supports an alternate method to avoid running off the bottom | |
69 | of the stack. | |
70 | ||
71 | There are two frames that are "special", the frame for the function | |
72 | containing the process entry point, since it has no predecessor frame, | |
73 | and the frame for the function containing the user code entry point | |
74 | (the main() function), since all the predecessor frames are for the | |
75 | process startup code. Since we have no guarantee that the linked | |
76 | in startup modules have any debugging information that gdb can use, | |
77 | we need to avoid following frame pointers back into frames that might | |
78 | have been built in the startup code, as we might get hopelessly | |
79 | confused. However, we almost always have debugging information | |
80 | available for main(). | |
81 | ||
618ce49f AC |
82 | These variables are used to save the range of PC values which are |
83 | valid within the main() function and within the function containing | |
84 | the process entry point. If we always consider the frame for | |
85 | main() as the outermost frame when debugging user code, and the | |
86 | frame for the process entry point function as the outermost frame | |
87 | when debugging startup code, then all we have to do is have | |
88 | DEPRECATED_FRAME_CHAIN_VALID return false whenever a frame's | |
89 | current PC is within the range specified by these variables. In | |
90 | essence, we set "ceilings" in the frame chain beyond which we will | |
c906108c SS |
91 | not proceed when following the frame chain back up the stack. |
92 | ||
93 | A nice side effect is that we can still debug startup code without | |
94 | running off the end of the frame chain, assuming that we have usable | |
95 | debugging information in the startup modules, and if we choose to not | |
96 | use the block at main, or can't find it for some reason, everything | |
97 | still works as before. And if we have no startup code debugging | |
98 | information but we do have usable information for main(), backtraces | |
6e4c6c91 | 99 | from user code don't go wandering off into the startup code. */ |
c906108c SS |
100 | |
101 | struct entry_info | |
c5aa993b | 102 | { |
c906108c | 103 | |
c5aa993b JM |
104 | /* The value we should use for this objects entry point. |
105 | The illegal/unknown value needs to be something other than 0, ~0 | |
106 | for instance, which is much less likely than 0. */ | |
c906108c | 107 | |
c5aa993b | 108 | CORE_ADDR entry_point; |
c906108c | 109 | |
c5aa993b | 110 | #define INVALID_ENTRY_POINT (~0) /* ~0 will not be in any file, we hope. */ |
c906108c | 111 | |
c5aa993b | 112 | }; |
c906108c | 113 | |
f1f6aadf PA |
114 | /* Sections in an objfile. The section offsets are stored in the |
115 | OBJFILE. */ | |
c906108c | 116 | |
c5aa993b JM |
117 | struct obj_section |
118 | { | |
7be0c536 | 119 | struct bfd_section *the_bfd_section; /* BFD section pointer */ |
c906108c | 120 | |
c5aa993b JM |
121 | /* Objfile this section is part of. */ |
122 | struct objfile *objfile; | |
c906108c | 123 | |
c5aa993b JM |
124 | /* True if this "overlay section" is mapped into an "overlay region". */ |
125 | int ovly_mapped; | |
126 | }; | |
c906108c | 127 | |
f1f6aadf PA |
128 | /* Relocation offset applied to S. */ |
129 | #define obj_section_offset(s) \ | |
130 | (((s)->objfile->section_offsets)->offsets[(s)->the_bfd_section->index]) | |
131 | ||
132 | /* The memory address of section S (vma + offset). */ | |
133 | #define obj_section_addr(s) \ | |
134 | (bfd_get_section_vma ((s)->objfile->abfd, s->the_bfd_section) \ | |
135 | + obj_section_offset (s)) | |
136 | ||
137 | /* The one-passed-the-end memory address of section S | |
138 | (vma + size + offset). */ | |
139 | #define obj_section_endaddr(s) \ | |
140 | (bfd_get_section_vma ((s)->objfile->abfd, s->the_bfd_section) \ | |
141 | + bfd_get_section_size ((s)->the_bfd_section) \ | |
142 | + obj_section_offset (s)) | |
c906108c | 143 | |
c906108c SS |
144 | /* The "objstats" structure provides a place for gdb to record some |
145 | interesting information about its internal state at runtime, on a | |
146 | per objfile basis, such as information about the number of symbols | |
147 | read, size of string table (if any), etc. */ | |
148 | ||
c5aa993b JM |
149 | struct objstats |
150 | { | |
151 | int n_minsyms; /* Number of minimal symbols read */ | |
152 | int n_psyms; /* Number of partial symbols read */ | |
153 | int n_syms; /* Number of full symbols read */ | |
154 | int n_stabs; /* Number of ".stabs" read (if applicable) */ | |
155 | int n_types; /* Number of types */ | |
156 | int sz_strtab; /* Size of stringtable, (if applicable) */ | |
157 | }; | |
c906108c SS |
158 | |
159 | #define OBJSTAT(objfile, expr) (objfile -> stats.expr) | |
160 | #define OBJSTATS struct objstats stats | |
a14ed312 KB |
161 | extern void print_objfile_statistics (void); |
162 | extern void print_symbol_bcache_statistics (void); | |
c906108c | 163 | |
9227b5eb | 164 | /* Number of entries in the minimal symbol hash table. */ |
375f3d86 | 165 | #define MINIMAL_SYMBOL_HASH_SIZE 2039 |
9227b5eb | 166 | |
c906108c SS |
167 | /* Master structure for keeping track of each file from which |
168 | gdb reads symbols. There are several ways these get allocated: 1. | |
169 | The main symbol file, symfile_objfile, set by the symbol-file command, | |
170 | 2. Additional symbol files added by the add-symbol-file command, | |
171 | 3. Shared library objfiles, added by ADD_SOLIB, 4. symbol files | |
172 | for modules that were loaded when GDB attached to a remote system | |
173 | (see remote-vx.c). */ | |
174 | ||
175 | struct objfile | |
c5aa993b | 176 | { |
c906108c | 177 | |
c5aa993b JM |
178 | /* All struct objfile's are chained together by their next pointers. |
179 | The global variable "object_files" points to the first link in this | |
180 | chain. | |
c906108c | 181 | |
c5aa993b JM |
182 | FIXME: There is a problem here if the objfile is reusable, and if |
183 | multiple users are to be supported. The problem is that the objfile | |
184 | list is linked through a member of the objfile struct itself, which | |
185 | is only valid for one gdb process. The list implementation needs to | |
186 | be changed to something like: | |
c906108c | 187 | |
c5aa993b | 188 | struct list {struct list *next; struct objfile *objfile}; |
c906108c | 189 | |
c5aa993b JM |
190 | where the list structure is completely maintained separately within |
191 | each gdb process. */ | |
c906108c | 192 | |
c5aa993b | 193 | struct objfile *next; |
c906108c | 194 | |
c63f977f JB |
195 | /* The object file's name, tilde-expanded and absolute. |
196 | Malloc'd; free it if you free this struct. */ | |
c906108c | 197 | |
c5aa993b | 198 | char *name; |
c906108c | 199 | |
c5aa993b | 200 | /* Some flag bits for this objfile. */ |
c906108c | 201 | |
c5aa993b | 202 | unsigned short flags; |
c906108c | 203 | |
6c95b8df PA |
204 | /* The program space associated with this objfile. */ |
205 | ||
206 | struct program_space *pspace; | |
207 | ||
c5aa993b JM |
208 | /* Each objfile points to a linked list of symtabs derived from this file, |
209 | one symtab structure for each compilation unit (source file). Each link | |
210 | in the symtab list contains a backpointer to this objfile. */ | |
c906108c | 211 | |
c5aa993b | 212 | struct symtab *symtabs; |
c906108c | 213 | |
c5aa993b JM |
214 | /* Each objfile points to a linked list of partial symtabs derived from |
215 | this file, one partial symtab structure for each compilation unit | |
216 | (source file). */ | |
c906108c | 217 | |
c5aa993b | 218 | struct partial_symtab *psymtabs; |
c906108c | 219 | |
ff013f42 JK |
220 | /* Map addresses to the entries of PSYMTABS. It would be more efficient to |
221 | have a map per the whole process but ADDRMAP cannot selectively remove | |
222 | its items during FREE_OBJFILE. This mapping is already present even for | |
223 | PARTIAL_SYMTABs which still have no corresponding full SYMTABs read. */ | |
224 | ||
225 | struct addrmap *psymtabs_addrmap; | |
226 | ||
c5aa993b | 227 | /* List of freed partial symtabs, available for re-use */ |
c906108c | 228 | |
c5aa993b | 229 | struct partial_symtab *free_psymtabs; |
c906108c | 230 | |
c5aa993b JM |
231 | /* The object file's BFD. Can be null if the objfile contains only |
232 | minimal symbols, e.g. the run time common symbols for SunOS4. */ | |
c906108c | 233 | |
c5aa993b | 234 | bfd *obfd; |
c906108c | 235 | |
5e2b427d UW |
236 | /* The gdbarch associated with the BFD. Note that this gdbarch is |
237 | determined solely from BFD information, without looking at target | |
238 | information. The gdbarch determined from a running target may | |
239 | differ from this e.g. with respect to register types and names. */ | |
240 | ||
241 | struct gdbarch *gdbarch; | |
242 | ||
c5aa993b JM |
243 | /* The modification timestamp of the object file, as of the last time |
244 | we read its symbols. */ | |
c906108c | 245 | |
c5aa993b | 246 | long mtime; |
c906108c | 247 | |
b99607ea EZ |
248 | /* Obstack to hold objects that should be freed when we load a new symbol |
249 | table from this object file. */ | |
250 | ||
b99607ea EZ |
251 | struct obstack objfile_obstack; |
252 | ||
c5aa993b JM |
253 | /* A byte cache where we can stash arbitrary "chunks" of bytes that |
254 | will not change. */ | |
c906108c | 255 | |
af5f3db6 AC |
256 | struct bcache *psymbol_cache; /* Byte cache for partial syms */ |
257 | struct bcache *macro_cache; /* Byte cache for macros */ | |
c906108c | 258 | |
2de7ced7 DJ |
259 | /* Hash table for mapping symbol names to demangled names. Each |
260 | entry in the hash table is actually two consecutive strings, | |
261 | both null-terminated; the first one is a mangled or linkage | |
262 | name, and the second is the demangled name or just a zero byte | |
263 | if the name doesn't demangle. */ | |
264 | struct htab *demangled_names_hash; | |
265 | ||
c5aa993b | 266 | /* Vectors of all partial symbols read in from file. The actual data |
8b92e4d5 | 267 | is stored in the objfile_obstack. */ |
c906108c | 268 | |
c5aa993b JM |
269 | struct psymbol_allocation_list global_psymbols; |
270 | struct psymbol_allocation_list static_psymbols; | |
c906108c | 271 | |
c5aa993b JM |
272 | /* Each file contains a pointer to an array of minimal symbols for all |
273 | global symbols that are defined within the file. The array is terminated | |
274 | by a "null symbol", one that has a NULL pointer for the name and a zero | |
275 | value for the address. This makes it easy to walk through the array | |
276 | when passed a pointer to somewhere in the middle of it. There is also | |
277 | a count of the number of symbols, which does not include the terminating | |
278 | null symbol. The array itself, as well as all the data that it points | |
4a146b47 | 279 | to, should be allocated on the objfile_obstack for this file. */ |
c906108c | 280 | |
c5aa993b JM |
281 | struct minimal_symbol *msymbols; |
282 | int minimal_symbol_count; | |
c906108c | 283 | |
9227b5eb JB |
284 | /* This is a hash table used to index the minimal symbols by name. */ |
285 | ||
286 | struct minimal_symbol *msymbol_hash[MINIMAL_SYMBOL_HASH_SIZE]; | |
287 | ||
288 | /* This hash table is used to index the minimal symbols by their | |
289 | demangled names. */ | |
290 | ||
291 | struct minimal_symbol *msymbol_demangled_hash[MINIMAL_SYMBOL_HASH_SIZE]; | |
292 | ||
c5aa993b JM |
293 | /* Structure which keeps track of functions that manipulate objfile's |
294 | of the same type as this objfile. I.E. the function to read partial | |
295 | symbols for example. Note that this structure is in statically | |
296 | allocated memory, and is shared by all objfiles that use the | |
297 | object module reader of this type. */ | |
c906108c | 298 | |
c5aa993b | 299 | struct sym_fns *sf; |
c906108c | 300 | |
c5aa993b JM |
301 | /* The per-objfile information about the entry point, the scope (file/func) |
302 | containing the entry point, and the scope of the user's main() func. */ | |
c906108c | 303 | |
c5aa993b | 304 | struct entry_info ei; |
c906108c | 305 | |
c5aa993b JM |
306 | /* Information about stabs. Will be filled in with a dbx_symfile_info |
307 | struct by those readers that need it. */ | |
0a6ddd08 AC |
308 | /* NOTE: cagney/2004-10-23: This has been replaced by per-objfile |
309 | data points implemented using "data" and "num_data" below. For | |
310 | an example of how to use this replacement, see "objfile_data" | |
311 | in "mips-tdep.c". */ | |
c906108c | 312 | |
0a6ddd08 | 313 | struct dbx_symfile_info *deprecated_sym_stab_info; |
c906108c | 314 | |
c5aa993b JM |
315 | /* Hook for information for use by the symbol reader (currently used |
316 | for information shared by sym_init and sym_read). It is | |
317 | typically a pointer to malloc'd memory. The symbol reader's finish | |
318 | function is responsible for freeing the memory thusly allocated. */ | |
0a6ddd08 AC |
319 | /* NOTE: cagney/2004-10-23: This has been replaced by per-objfile |
320 | data points implemented using "data" and "num_data" below. For | |
321 | an example of how to use this replacement, see "objfile_data" | |
322 | in "mips-tdep.c". */ | |
c906108c | 323 | |
0a6ddd08 | 324 | void *deprecated_sym_private; |
c906108c | 325 | |
0d0e1a63 MK |
326 | /* Per objfile data-pointers required by other GDB modules. */ |
327 | /* FIXME: kettenis/20030711: This mechanism could replace | |
f98dfd4b TT |
328 | deprecated_sym_stab_info and deprecated_sym_private |
329 | entirely. */ | |
0d0e1a63 MK |
330 | |
331 | void **data; | |
332 | unsigned num_data; | |
333 | ||
c5aa993b | 334 | /* Set of relocation offsets to apply to each section. |
8b92e4d5 | 335 | Currently on the objfile_obstack (which makes no sense, but I'm |
c5aa993b | 336 | not sure it's harming anything). |
c906108c | 337 | |
c5aa993b JM |
338 | These offsets indicate that all symbols (including partial and |
339 | minimal symbols) which have been read have been relocated by this | |
340 | much. Symbols which are yet to be read need to be relocated by | |
341 | it. */ | |
c906108c | 342 | |
c5aa993b JM |
343 | struct section_offsets *section_offsets; |
344 | int num_sections; | |
c906108c | 345 | |
b8fbeb18 EZ |
346 | /* Indexes in the section_offsets array. These are initialized by the |
347 | *_symfile_offsets() family of functions (som_symfile_offsets, | |
348 | xcoff_symfile_offsets, default_symfile_offsets). In theory they | |
349 | should correspond to the section indexes used by bfd for the | |
350 | current objfile. The exception to this for the time being is the | |
351 | SOM version. */ | |
352 | ||
353 | int sect_index_text; | |
354 | int sect_index_data; | |
355 | int sect_index_bss; | |
356 | int sect_index_rodata; | |
357 | ||
96baa820 | 358 | /* These pointers are used to locate the section table, which |
5c44784c | 359 | among other things, is used to map pc addresses into sections. |
96baa820 JM |
360 | SECTIONS points to the first entry in the table, and |
361 | SECTIONS_END points to the first location past the last entry | |
362 | in the table. Currently the table is stored on the | |
8b92e4d5 | 363 | objfile_obstack (which makes no sense, but I'm not sure it's |
96baa820 | 364 | harming anything). */ |
c906108c | 365 | |
c5aa993b JM |
366 | struct obj_section |
367 | *sections, *sections_end; | |
c906108c | 368 | |
5b5d99cf JB |
369 | /* Link to objfile that contains the debug symbols for this one. |
370 | One is loaded if this file has an debug link to an existing | |
371 | debug file with the right checksum */ | |
372 | struct objfile *separate_debug_objfile; | |
373 | ||
374 | /* If this is a separate debug object, this is used as a link to the | |
375 | actual executable objfile. */ | |
376 | struct objfile *separate_debug_objfile_backlink; | |
377 | ||
c5aa993b JM |
378 | /* Place to stash various statistics about this objfile */ |
379 | OBJSTATS; | |
5c4e30ca DC |
380 | |
381 | /* A symtab that the C++ code uses to stash special symbols | |
382 | associated to namespaces. */ | |
383 | ||
384 | /* FIXME/carlton-2003-06-27: Delete this in a few years once | |
385 | "possible namespace symbols" go away. */ | |
386 | struct symtab *cp_namespace_symtab; | |
c5aa993b | 387 | }; |
c906108c SS |
388 | |
389 | /* Defines for the objfile flag word. */ | |
390 | ||
c906108c SS |
391 | /* When an object file has its functions reordered (currently Irix-5.2 |
392 | shared libraries exhibit this behaviour), we will need an expensive | |
393 | algorithm to locate a partial symtab or symtab via an address. | |
394 | To avoid this penalty for normal object files, we use this flag, | |
395 | whose setting is determined upon symbol table read in. */ | |
396 | ||
8b41ec65 | 397 | #define OBJF_REORDERED (1 << 0) /* Functions are reordered */ |
c5aa993b | 398 | |
2df3850c JM |
399 | /* Distinguish between an objfile for a shared library and a "vanilla" |
400 | objfile. (If not set, the objfile may still actually be a solib. | |
401 | This can happen if the user created the objfile by using the | |
402 | add-symbol-file command. GDB doesn't in that situation actually | |
403 | check whether the file is a solib. Rather, the target's | |
404 | implementation of the solib interface is responsible for setting | |
405 | this flag when noticing solibs used by an inferior.) */ | |
c906108c | 406 | |
8b41ec65 | 407 | #define OBJF_SHARED (1 << 1) /* From a shared library */ |
c906108c | 408 | |
2acceee2 JM |
409 | /* User requested that this objfile be read in it's entirety. */ |
410 | ||
8b41ec65 | 411 | #define OBJF_READNOW (1 << 2) /* Immediate full read */ |
2acceee2 | 412 | |
2df3850c JM |
413 | /* This objfile was created because the user explicitly caused it |
414 | (e.g., used the add-symbol-file command). This bit offers a way | |
415 | for run_command to remove old objfile entries which are no longer | |
416 | valid (i.e., are associated with an old inferior), but to preserve | |
417 | ones that the user explicitly loaded via the add-symbol-file | |
418 | command. */ | |
419 | ||
8b41ec65 | 420 | #define OBJF_USERLOADED (1 << 3) /* User loaded */ |
2df3850c | 421 | |
c906108c SS |
422 | /* The object file that contains the runtime common minimal symbols |
423 | for SunOS4. Note that this objfile has no associated BFD. */ | |
424 | ||
425 | extern struct objfile *rt_common_objfile; | |
426 | ||
b99607ea | 427 | /* When we need to allocate a new type, we need to know which objfile_obstack |
c906108c SS |
428 | to allocate the type on, since there is one for each objfile. The places |
429 | where types are allocated are deeply buried in function call hierarchies | |
430 | which know nothing about objfiles, so rather than trying to pass a | |
431 | particular objfile down to them, we just do an end run around them and | |
432 | set current_objfile to be whatever objfile we expect to be using at the | |
433 | time types are being allocated. For instance, when we start reading | |
434 | symbols for a particular objfile, we set current_objfile to point to that | |
435 | objfile, and when we are done, we set it back to NULL, to ensure that we | |
436 | never put a type someplace other than where we are expecting to put it. | |
437 | FIXME: Maybe we should review the entire type handling system and | |
438 | see if there is a better way to avoid this problem. */ | |
439 | ||
440 | extern struct objfile *current_objfile; | |
441 | ||
c906108c SS |
442 | /* Declarations for functions defined in objfiles.c */ |
443 | ||
a14ed312 | 444 | extern struct objfile *allocate_objfile (bfd *, int); |
c906108c | 445 | |
5e2b427d UW |
446 | extern struct gdbarch *get_objfile_arch (struct objfile *); |
447 | ||
9ab9195f EZ |
448 | extern void init_entry_point_info (struct objfile *); |
449 | ||
450 | extern CORE_ADDR entry_point_address (void); | |
451 | ||
a14ed312 | 452 | extern int build_objfile_section_table (struct objfile *); |
c906108c | 453 | |
15831452 JB |
454 | extern void terminate_minimal_symbol_table (struct objfile *objfile); |
455 | ||
5b5d99cf JB |
456 | extern void put_objfile_before (struct objfile *, struct objfile *); |
457 | ||
a14ed312 | 458 | extern void objfile_to_front (struct objfile *); |
c906108c | 459 | |
a14ed312 | 460 | extern void unlink_objfile (struct objfile *); |
c906108c | 461 | |
a14ed312 | 462 | extern void free_objfile (struct objfile *); |
c906108c | 463 | |
74b7792f AC |
464 | extern struct cleanup *make_cleanup_free_objfile (struct objfile *); |
465 | ||
a14ed312 | 466 | extern void free_all_objfiles (void); |
c906108c | 467 | |
a14ed312 | 468 | extern void objfile_relocate (struct objfile *, struct section_offsets *); |
c906108c | 469 | |
55333a84 DE |
470 | extern int objfile_has_partial_symbols (struct objfile *objfile); |
471 | ||
472 | extern int objfile_has_full_symbols (struct objfile *objfile); | |
473 | ||
e361b228 TG |
474 | extern int objfile_has_symbols (struct objfile *objfile); |
475 | ||
a14ed312 | 476 | extern int have_partial_symbols (void); |
c906108c | 477 | |
a14ed312 | 478 | extern int have_full_symbols (void); |
c906108c | 479 | |
bb272892 PP |
480 | extern void objfiles_changed (void); |
481 | ||
c906108c SS |
482 | /* This operation deletes all objfile entries that represent solibs that |
483 | weren't explicitly loaded by the user, via e.g., the add-symbol-file | |
484 | command. | |
c5aa993b | 485 | */ |
a14ed312 | 486 | extern void objfile_purge_solibs (void); |
c906108c SS |
487 | |
488 | /* Functions for dealing with the minimal symbol table, really a misc | |
489 | address<->symbol mapping for things we don't have debug symbols for. */ | |
490 | ||
a14ed312 | 491 | extern int have_minimal_symbols (void); |
c906108c | 492 | |
a14ed312 | 493 | extern struct obj_section *find_pc_section (CORE_ADDR pc); |
c906108c | 494 | |
a14ed312 | 495 | extern int in_plt_section (CORE_ADDR, char *); |
c906108c | 496 | |
0d0e1a63 MK |
497 | /* Keep a registry of per-objfile data-pointers required by other GDB |
498 | modules. */ | |
499 | ||
c1bd65d0 | 500 | /* Allocate an entry in the per-objfile registry. */ |
0d0e1a63 | 501 | extern const struct objfile_data *register_objfile_data (void); |
c1bd65d0 DE |
502 | |
503 | /* Allocate an entry in the per-objfile registry. | |
504 | SAVE and FREE are called when clearing objfile data. | |
505 | First all registered SAVE functions are called. | |
506 | Then all registered FREE functions are called. | |
507 | Either or both of SAVE, FREE may be NULL. */ | |
60c5725c | 508 | extern const struct objfile_data *register_objfile_data_with_cleanup |
c1bd65d0 DE |
509 | (void (*save) (struct objfile *, void *), |
510 | void (*free) (struct objfile *, void *)); | |
511 | ||
7b097ae3 | 512 | extern void clear_objfile_data (struct objfile *objfile); |
0d0e1a63 MK |
513 | extern void set_objfile_data (struct objfile *objfile, |
514 | const struct objfile_data *data, void *value); | |
515 | extern void *objfile_data (struct objfile *objfile, | |
516 | const struct objfile_data *data); | |
e3c69974 | 517 | |
3db741ef | 518 | extern struct bfd *gdb_bfd_ref (struct bfd *abfd); |
e3c69974 | 519 | extern void gdb_bfd_unref (struct bfd *abfd); |
0d0e1a63 MK |
520 | \f |
521 | ||
6c95b8df PA |
522 | /* Traverse all object files in the current program space. |
523 | ALL_OBJFILES_SAFE works even if you delete the objfile during the | |
524 | traversal. */ | |
525 | ||
526 | /* Traverse all object files in program space SS. */ | |
c906108c | 527 | |
6c95b8df PA |
528 | #define ALL_PSPACE_OBJFILES(ss, obj) \ |
529 | for ((obj) = ss->objfiles; (obj) != NULL; (obj) = (obj)->next) \ | |
c906108c | 530 | |
6c95b8df PA |
531 | #define ALL_PSPACE_OBJFILES_SAFE(ss, obj, nxt) \ |
532 | for ((obj) = ss->objfiles; \ | |
533 | (obj) != NULL? ((nxt)=(obj)->next,1) :0; \ | |
534 | (obj) = (nxt)) | |
535 | ||
536 | #define ALL_OBJFILES(obj) \ | |
537 | for ((obj) = current_program_space->objfiles; \ | |
538 | (obj) != NULL; \ | |
539 | (obj) = (obj)->next) | |
540 | ||
541 | #define ALL_OBJFILES_SAFE(obj,nxt) \ | |
542 | for ((obj) = current_program_space->objfiles; \ | |
c906108c SS |
543 | (obj) != NULL? ((nxt)=(obj)->next,1) :0; \ |
544 | (obj) = (nxt)) | |
545 | ||
546 | /* Traverse all symtabs in one objfile. */ | |
547 | ||
548 | #define ALL_OBJFILE_SYMTABS(objfile, s) \ | |
549 | for ((s) = (objfile) -> symtabs; (s) != NULL; (s) = (s) -> next) | |
550 | ||
551 | /* Traverse all psymtabs in one objfile. */ | |
552 | ||
553 | #define ALL_OBJFILE_PSYMTABS(objfile, p) \ | |
554 | for ((p) = (objfile) -> psymtabs; (p) != NULL; (p) = (p) -> next) | |
555 | ||
556 | /* Traverse all minimal symbols in one objfile. */ | |
557 | ||
558 | #define ALL_OBJFILE_MSYMBOLS(objfile, m) \ | |
3567439c | 559 | for ((m) = (objfile) -> msymbols; SYMBOL_LINKAGE_NAME(m) != NULL; (m)++) |
c906108c | 560 | |
6c95b8df PA |
561 | /* Traverse all symtabs in all objfiles in the current symbol |
562 | space. */ | |
c906108c SS |
563 | |
564 | #define ALL_SYMTABS(objfile, s) \ | |
565 | ALL_OBJFILES (objfile) \ | |
566 | ALL_OBJFILE_SYMTABS (objfile, s) | |
567 | ||
6c95b8df PA |
568 | #define ALL_PSPACE_SYMTABS(ss, objfile, s) \ |
569 | ALL_PSPACE_OBJFILES (ss, objfile) \ | |
570 | ALL_OBJFILE_SYMTABS (objfile, s) | |
571 | ||
572 | /* Traverse all symtabs in all objfiles in the current program space, | |
573 | skipping included files (which share a blockvector with their | |
574 | primary symtab). */ | |
11309657 DJ |
575 | |
576 | #define ALL_PRIMARY_SYMTABS(objfile, s) \ | |
577 | ALL_OBJFILES (objfile) \ | |
578 | ALL_OBJFILE_SYMTABS (objfile, s) \ | |
579 | if ((s)->primary) | |
580 | ||
6c95b8df PA |
581 | #define ALL_PSPACE_PRIMARY_SYMTABS(pspace, objfile, s) \ |
582 | ALL_PSPACE_OBJFILES (ss, objfile) \ | |
583 | ALL_OBJFILE_SYMTABS (objfile, s) \ | |
584 | if ((s)->primary) | |
585 | ||
586 | /* Traverse all psymtabs in all objfiles in the current symbol | |
587 | space. */ | |
c906108c SS |
588 | |
589 | #define ALL_PSYMTABS(objfile, p) \ | |
590 | ALL_OBJFILES (objfile) \ | |
591 | ALL_OBJFILE_PSYMTABS (objfile, p) | |
592 | ||
6c95b8df PA |
593 | #define ALL_PSPACE_PSYMTABS(ss, objfile, p) \ |
594 | ALL_PSPACE_OBJFILES (ss, objfile) \ | |
595 | ALL_OBJFILE_PSYMTABS (objfile, p) | |
596 | ||
597 | /* Traverse all minimal symbols in all objfiles in the current symbol | |
598 | space. */ | |
c906108c SS |
599 | |
600 | #define ALL_MSYMBOLS(objfile, m) \ | |
601 | ALL_OBJFILES (objfile) \ | |
15831452 | 602 | ALL_OBJFILE_MSYMBOLS (objfile, m) |
c906108c SS |
603 | |
604 | #define ALL_OBJFILE_OSECTIONS(objfile, osect) \ | |
605 | for (osect = objfile->sections; osect < objfile->sections_end; osect++) | |
606 | ||
607 | #define ALL_OBJSECTIONS(objfile, osect) \ | |
608 | ALL_OBJFILES (objfile) \ | |
609 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
610 | ||
b8fbeb18 | 611 | #define SECT_OFF_DATA(objfile) \ |
8e65ff28 | 612 | ((objfile->sect_index_data == -1) \ |
e2e0b3e5 | 613 | ? (internal_error (__FILE__, __LINE__, _("sect_index_data not initialized")), -1) \ |
8e65ff28 | 614 | : objfile->sect_index_data) |
b8fbeb18 EZ |
615 | |
616 | #define SECT_OFF_RODATA(objfile) \ | |
8e65ff28 | 617 | ((objfile->sect_index_rodata == -1) \ |
e2e0b3e5 | 618 | ? (internal_error (__FILE__, __LINE__, _("sect_index_rodata not initialized")), -1) \ |
8e65ff28 | 619 | : objfile->sect_index_rodata) |
b8fbeb18 EZ |
620 | |
621 | #define SECT_OFF_TEXT(objfile) \ | |
8e65ff28 | 622 | ((objfile->sect_index_text == -1) \ |
e2e0b3e5 | 623 | ? (internal_error (__FILE__, __LINE__, _("sect_index_text not initialized")), -1) \ |
8e65ff28 | 624 | : objfile->sect_index_text) |
b8fbeb18 | 625 | |
a4c8257b EZ |
626 | /* Sometimes the .bss section is missing from the objfile, so we don't |
627 | want to die here. Let the users of SECT_OFF_BSS deal with an | |
628 | uninitialized section index. */ | |
629 | #define SECT_OFF_BSS(objfile) (objfile)->sect_index_bss | |
b8fbeb18 | 630 | |
c14c28ba PP |
631 | /* Answer whether there is more than one object file loaded. */ |
632 | ||
633 | #define MULTI_OBJFILE_P() (object_files && object_files->next) | |
634 | ||
c5aa993b | 635 | #endif /* !defined (OBJFILES_H) */ |