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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, |
9b254dd1 | 4 | 2002, 2003, 2004, 2007, 2008 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 SS |
112 | |
113 | /* Sections in an objfile. | |
114 | ||
115 | It is strange that we have both this notion of "sections" | |
116 | and the one used by section_offsets. Section as used | |
117 | here, (currently at least) means a BFD section, and the sections | |
118 | are set up from the BFD sections in allocate_objfile. | |
119 | ||
120 | The sections in section_offsets have their meaning determined by | |
121 | the symbol format, and they are set up by the sym_offsets function | |
122 | for that symbol file format. | |
123 | ||
124 | I'm not sure this could or should be changed, however. */ | |
125 | ||
c5aa993b JM |
126 | struct obj_section |
127 | { | |
128 | CORE_ADDR addr; /* lowest address in section */ | |
129 | CORE_ADDR endaddr; /* 1+highest address in section */ | |
c906108c | 130 | |
c5aa993b JM |
131 | /* This field is being used for nefarious purposes by syms_from_objfile. |
132 | It is said to be redundant with section_offsets; it's not really being | |
133 | used that way, however, it's some sort of hack I don't understand | |
134 | and am not going to try to eliminate (yet, anyway). FIXME. | |
c906108c | 135 | |
c5aa993b JM |
136 | It was documented as "offset between (end)addr and actual memory |
137 | addresses", but that's not true; addr & endaddr are actual memory | |
138 | addresses. */ | |
139 | CORE_ADDR offset; | |
c906108c | 140 | |
7be0c536 | 141 | struct bfd_section *the_bfd_section; /* BFD section pointer */ |
c906108c | 142 | |
c5aa993b JM |
143 | /* Objfile this section is part of. */ |
144 | struct objfile *objfile; | |
c906108c | 145 | |
c5aa993b JM |
146 | /* True if this "overlay section" is mapped into an "overlay region". */ |
147 | int ovly_mapped; | |
148 | }; | |
c906108c | 149 | |
c906108c | 150 | |
c906108c SS |
151 | /* The "objstats" structure provides a place for gdb to record some |
152 | interesting information about its internal state at runtime, on a | |
153 | per objfile basis, such as information about the number of symbols | |
154 | read, size of string table (if any), etc. */ | |
155 | ||
c5aa993b JM |
156 | struct objstats |
157 | { | |
158 | int n_minsyms; /* Number of minimal symbols read */ | |
159 | int n_psyms; /* Number of partial symbols read */ | |
160 | int n_syms; /* Number of full symbols read */ | |
161 | int n_stabs; /* Number of ".stabs" read (if applicable) */ | |
162 | int n_types; /* Number of types */ | |
163 | int sz_strtab; /* Size of stringtable, (if applicable) */ | |
164 | }; | |
c906108c SS |
165 | |
166 | #define OBJSTAT(objfile, expr) (objfile -> stats.expr) | |
167 | #define OBJSTATS struct objstats stats | |
a14ed312 KB |
168 | extern void print_objfile_statistics (void); |
169 | extern void print_symbol_bcache_statistics (void); | |
c906108c | 170 | |
9227b5eb | 171 | /* Number of entries in the minimal symbol hash table. */ |
375f3d86 | 172 | #define MINIMAL_SYMBOL_HASH_SIZE 2039 |
9227b5eb | 173 | |
c906108c SS |
174 | /* Master structure for keeping track of each file from which |
175 | gdb reads symbols. There are several ways these get allocated: 1. | |
176 | The main symbol file, symfile_objfile, set by the symbol-file command, | |
177 | 2. Additional symbol files added by the add-symbol-file command, | |
178 | 3. Shared library objfiles, added by ADD_SOLIB, 4. symbol files | |
179 | for modules that were loaded when GDB attached to a remote system | |
180 | (see remote-vx.c). */ | |
181 | ||
182 | struct objfile | |
c5aa993b | 183 | { |
c906108c | 184 | |
c5aa993b JM |
185 | /* All struct objfile's are chained together by their next pointers. |
186 | The global variable "object_files" points to the first link in this | |
187 | chain. | |
c906108c | 188 | |
c5aa993b JM |
189 | FIXME: There is a problem here if the objfile is reusable, and if |
190 | multiple users are to be supported. The problem is that the objfile | |
191 | list is linked through a member of the objfile struct itself, which | |
192 | is only valid for one gdb process. The list implementation needs to | |
193 | be changed to something like: | |
c906108c | 194 | |
c5aa993b | 195 | struct list {struct list *next; struct objfile *objfile}; |
c906108c | 196 | |
c5aa993b JM |
197 | where the list structure is completely maintained separately within |
198 | each gdb process. */ | |
c906108c | 199 | |
c5aa993b | 200 | struct objfile *next; |
c906108c | 201 | |
c63f977f JB |
202 | /* The object file's name, tilde-expanded and absolute. |
203 | Malloc'd; free it if you free this struct. */ | |
c906108c | 204 | |
c5aa993b | 205 | char *name; |
c906108c | 206 | |
c5aa993b | 207 | /* Some flag bits for this objfile. */ |
c906108c | 208 | |
c5aa993b | 209 | unsigned short flags; |
c906108c | 210 | |
c5aa993b JM |
211 | /* Each objfile points to a linked list of symtabs derived from this file, |
212 | one symtab structure for each compilation unit (source file). Each link | |
213 | in the symtab list contains a backpointer to this objfile. */ | |
c906108c | 214 | |
c5aa993b | 215 | struct symtab *symtabs; |
c906108c | 216 | |
c5aa993b JM |
217 | /* Each objfile points to a linked list of partial symtabs derived from |
218 | this file, one partial symtab structure for each compilation unit | |
219 | (source file). */ | |
c906108c | 220 | |
c5aa993b | 221 | struct partial_symtab *psymtabs; |
c906108c | 222 | |
c5aa993b | 223 | /* List of freed partial symtabs, available for re-use */ |
c906108c | 224 | |
c5aa993b | 225 | struct partial_symtab *free_psymtabs; |
c906108c | 226 | |
c5aa993b JM |
227 | /* The object file's BFD. Can be null if the objfile contains only |
228 | minimal symbols, e.g. the run time common symbols for SunOS4. */ | |
c906108c | 229 | |
c5aa993b | 230 | bfd *obfd; |
c906108c | 231 | |
5e2b427d UW |
232 | /* The gdbarch associated with the BFD. Note that this gdbarch is |
233 | determined solely from BFD information, without looking at target | |
234 | information. The gdbarch determined from a running target may | |
235 | differ from this e.g. with respect to register types and names. */ | |
236 | ||
237 | struct gdbarch *gdbarch; | |
238 | ||
c5aa993b JM |
239 | /* The modification timestamp of the object file, as of the last time |
240 | we read its symbols. */ | |
c906108c | 241 | |
c5aa993b | 242 | long mtime; |
c906108c | 243 | |
b99607ea EZ |
244 | /* Obstack to hold objects that should be freed when we load a new symbol |
245 | table from this object file. */ | |
246 | ||
b99607ea EZ |
247 | struct obstack objfile_obstack; |
248 | ||
c5aa993b JM |
249 | /* A byte cache where we can stash arbitrary "chunks" of bytes that |
250 | will not change. */ | |
c906108c | 251 | |
af5f3db6 AC |
252 | struct bcache *psymbol_cache; /* Byte cache for partial syms */ |
253 | struct bcache *macro_cache; /* Byte cache for macros */ | |
c906108c | 254 | |
2de7ced7 DJ |
255 | /* Hash table for mapping symbol names to demangled names. Each |
256 | entry in the hash table is actually two consecutive strings, | |
257 | both null-terminated; the first one is a mangled or linkage | |
258 | name, and the second is the demangled name or just a zero byte | |
259 | if the name doesn't demangle. */ | |
260 | struct htab *demangled_names_hash; | |
261 | ||
c5aa993b | 262 | /* Vectors of all partial symbols read in from file. The actual data |
8b92e4d5 | 263 | is stored in the objfile_obstack. */ |
c906108c | 264 | |
c5aa993b JM |
265 | struct psymbol_allocation_list global_psymbols; |
266 | struct psymbol_allocation_list static_psymbols; | |
c906108c | 267 | |
c5aa993b JM |
268 | /* Each file contains a pointer to an array of minimal symbols for all |
269 | global symbols that are defined within the file. The array is terminated | |
270 | by a "null symbol", one that has a NULL pointer for the name and a zero | |
271 | value for the address. This makes it easy to walk through the array | |
272 | when passed a pointer to somewhere in the middle of it. There is also | |
273 | a count of the number of symbols, which does not include the terminating | |
274 | null symbol. The array itself, as well as all the data that it points | |
4a146b47 | 275 | to, should be allocated on the objfile_obstack for this file. */ |
c906108c | 276 | |
c5aa993b JM |
277 | struct minimal_symbol *msymbols; |
278 | int minimal_symbol_count; | |
c906108c | 279 | |
9227b5eb JB |
280 | /* This is a hash table used to index the minimal symbols by name. */ |
281 | ||
282 | struct minimal_symbol *msymbol_hash[MINIMAL_SYMBOL_HASH_SIZE]; | |
283 | ||
284 | /* This hash table is used to index the minimal symbols by their | |
285 | demangled names. */ | |
286 | ||
287 | struct minimal_symbol *msymbol_demangled_hash[MINIMAL_SYMBOL_HASH_SIZE]; | |
288 | ||
c5aa993b JM |
289 | /* The mmalloc() malloc-descriptor for this objfile if we are using |
290 | the memory mapped malloc() package to manage storage for this objfile's | |
291 | data. NULL if we are not. */ | |
c906108c | 292 | |
4efb68b1 | 293 | void *md; |
c906108c | 294 | |
c5aa993b JM |
295 | /* The file descriptor that was used to obtain the mmalloc descriptor |
296 | for this objfile. If we call mmalloc_detach with the malloc descriptor | |
297 | we should then close this file descriptor. */ | |
c906108c | 298 | |
c5aa993b | 299 | int mmfd; |
c906108c | 300 | |
c5aa993b JM |
301 | /* Structure which keeps track of functions that manipulate objfile's |
302 | of the same type as this objfile. I.E. the function to read partial | |
303 | symbols for example. Note that this structure is in statically | |
304 | allocated memory, and is shared by all objfiles that use the | |
305 | object module reader of this type. */ | |
c906108c | 306 | |
c5aa993b | 307 | struct sym_fns *sf; |
c906108c | 308 | |
c5aa993b JM |
309 | /* The per-objfile information about the entry point, the scope (file/func) |
310 | containing the entry point, and the scope of the user's main() func. */ | |
c906108c | 311 | |
c5aa993b | 312 | struct entry_info ei; |
c906108c | 313 | |
c5aa993b JM |
314 | /* Information about stabs. Will be filled in with a dbx_symfile_info |
315 | struct by those readers that need it. */ | |
0a6ddd08 AC |
316 | /* NOTE: cagney/2004-10-23: This has been replaced by per-objfile |
317 | data points implemented using "data" and "num_data" below. For | |
318 | an example of how to use this replacement, see "objfile_data" | |
319 | in "mips-tdep.c". */ | |
c906108c | 320 | |
0a6ddd08 | 321 | struct dbx_symfile_info *deprecated_sym_stab_info; |
c906108c | 322 | |
c5aa993b JM |
323 | /* Hook for information for use by the symbol reader (currently used |
324 | for information shared by sym_init and sym_read). It is | |
325 | typically a pointer to malloc'd memory. The symbol reader's finish | |
326 | function is responsible for freeing the memory thusly allocated. */ | |
0a6ddd08 AC |
327 | /* NOTE: cagney/2004-10-23: This has been replaced by per-objfile |
328 | data points implemented using "data" and "num_data" below. For | |
329 | an example of how to use this replacement, see "objfile_data" | |
330 | in "mips-tdep.c". */ | |
c906108c | 331 | |
0a6ddd08 | 332 | void *deprecated_sym_private; |
c906108c | 333 | |
c5aa993b JM |
334 | /* Hook for target-architecture-specific information. This must |
335 | point to memory allocated on one of the obstacks in this objfile, | |
336 | so that it gets freed automatically when reading a new object | |
337 | file. */ | |
c906108c | 338 | |
0a6ddd08 | 339 | void *deprecated_obj_private; |
c906108c | 340 | |
0d0e1a63 MK |
341 | /* Per objfile data-pointers required by other GDB modules. */ |
342 | /* FIXME: kettenis/20030711: This mechanism could replace | |
0a6ddd08 AC |
343 | deprecated_sym_stab_info, deprecated_sym_private and |
344 | deprecated_obj_private entirely. */ | |
0d0e1a63 MK |
345 | |
346 | void **data; | |
347 | unsigned num_data; | |
348 | ||
c5aa993b | 349 | /* Set of relocation offsets to apply to each section. |
8b92e4d5 | 350 | Currently on the objfile_obstack (which makes no sense, but I'm |
c5aa993b | 351 | not sure it's harming anything). |
c906108c | 352 | |
c5aa993b JM |
353 | These offsets indicate that all symbols (including partial and |
354 | minimal symbols) which have been read have been relocated by this | |
355 | much. Symbols which are yet to be read need to be relocated by | |
356 | it. */ | |
c906108c | 357 | |
c5aa993b JM |
358 | struct section_offsets *section_offsets; |
359 | int num_sections; | |
c906108c | 360 | |
b8fbeb18 EZ |
361 | /* Indexes in the section_offsets array. These are initialized by the |
362 | *_symfile_offsets() family of functions (som_symfile_offsets, | |
363 | xcoff_symfile_offsets, default_symfile_offsets). In theory they | |
364 | should correspond to the section indexes used by bfd for the | |
365 | current objfile. The exception to this for the time being is the | |
366 | SOM version. */ | |
367 | ||
368 | int sect_index_text; | |
369 | int sect_index_data; | |
370 | int sect_index_bss; | |
371 | int sect_index_rodata; | |
372 | ||
96baa820 | 373 | /* These pointers are used to locate the section table, which |
5c44784c | 374 | among other things, is used to map pc addresses into sections. |
96baa820 JM |
375 | SECTIONS points to the first entry in the table, and |
376 | SECTIONS_END points to the first location past the last entry | |
377 | in the table. Currently the table is stored on the | |
8b92e4d5 | 378 | objfile_obstack (which makes no sense, but I'm not sure it's |
96baa820 | 379 | harming anything). */ |
c906108c | 380 | |
c5aa993b JM |
381 | struct obj_section |
382 | *sections, *sections_end; | |
c906108c | 383 | |
5b5d99cf JB |
384 | /* Link to objfile that contains the debug symbols for this one. |
385 | One is loaded if this file has an debug link to an existing | |
386 | debug file with the right checksum */ | |
387 | struct objfile *separate_debug_objfile; | |
388 | ||
389 | /* If this is a separate debug object, this is used as a link to the | |
390 | actual executable objfile. */ | |
391 | struct objfile *separate_debug_objfile_backlink; | |
392 | ||
c5aa993b JM |
393 | /* Place to stash various statistics about this objfile */ |
394 | OBJSTATS; | |
5c4e30ca DC |
395 | |
396 | /* A symtab that the C++ code uses to stash special symbols | |
397 | associated to namespaces. */ | |
398 | ||
399 | /* FIXME/carlton-2003-06-27: Delete this in a few years once | |
400 | "possible namespace symbols" go away. */ | |
401 | struct symtab *cp_namespace_symtab; | |
c5aa993b | 402 | }; |
c906108c SS |
403 | |
404 | /* Defines for the objfile flag word. */ | |
405 | ||
c906108c SS |
406 | /* When using mapped/remapped predigested gdb symbol information, we need |
407 | a flag that indicates that we have previously done an initial symbol | |
408 | table read from this particular objfile. We can't just look for the | |
409 | absence of any of the three symbol tables (msymbols, psymtab, symtab) | |
410 | because if the file has no symbols for example, none of these will | |
411 | exist. */ | |
412 | ||
413 | #define OBJF_SYMS (1 << 1) /* Have tried to read symbols */ | |
414 | ||
415 | /* When an object file has its functions reordered (currently Irix-5.2 | |
416 | shared libraries exhibit this behaviour), we will need an expensive | |
417 | algorithm to locate a partial symtab or symtab via an address. | |
418 | To avoid this penalty for normal object files, we use this flag, | |
419 | whose setting is determined upon symbol table read in. */ | |
420 | ||
421 | #define OBJF_REORDERED (1 << 2) /* Functions are reordered */ | |
c5aa993b | 422 | |
2df3850c JM |
423 | /* Distinguish between an objfile for a shared library and a "vanilla" |
424 | objfile. (If not set, the objfile may still actually be a solib. | |
425 | This can happen if the user created the objfile by using the | |
426 | add-symbol-file command. GDB doesn't in that situation actually | |
427 | check whether the file is a solib. Rather, the target's | |
428 | implementation of the solib interface is responsible for setting | |
429 | this flag when noticing solibs used by an inferior.) */ | |
c906108c | 430 | |
c5aa993b | 431 | #define OBJF_SHARED (1 << 3) /* From a shared library */ |
c906108c | 432 | |
2acceee2 JM |
433 | /* User requested that this objfile be read in it's entirety. */ |
434 | ||
435 | #define OBJF_READNOW (1 << 4) /* Immediate full read */ | |
436 | ||
2df3850c JM |
437 | /* This objfile was created because the user explicitly caused it |
438 | (e.g., used the add-symbol-file command). This bit offers a way | |
439 | for run_command to remove old objfile entries which are no longer | |
440 | valid (i.e., are associated with an old inferior), but to preserve | |
441 | ones that the user explicitly loaded via the add-symbol-file | |
442 | command. */ | |
443 | ||
444 | #define OBJF_USERLOADED (1 << 5) /* User loaded */ | |
445 | ||
c906108c SS |
446 | /* The object file that the main symbol table was loaded from (e.g. the |
447 | argument to the "symbol-file" or "file" command). */ | |
448 | ||
449 | extern struct objfile *symfile_objfile; | |
450 | ||
451 | /* The object file that contains the runtime common minimal symbols | |
452 | for SunOS4. Note that this objfile has no associated BFD. */ | |
453 | ||
454 | extern struct objfile *rt_common_objfile; | |
455 | ||
b99607ea | 456 | /* When we need to allocate a new type, we need to know which objfile_obstack |
c906108c SS |
457 | to allocate the type on, since there is one for each objfile. The places |
458 | where types are allocated are deeply buried in function call hierarchies | |
459 | which know nothing about objfiles, so rather than trying to pass a | |
460 | particular objfile down to them, we just do an end run around them and | |
461 | set current_objfile to be whatever objfile we expect to be using at the | |
462 | time types are being allocated. For instance, when we start reading | |
463 | symbols for a particular objfile, we set current_objfile to point to that | |
464 | objfile, and when we are done, we set it back to NULL, to ensure that we | |
465 | never put a type someplace other than where we are expecting to put it. | |
466 | FIXME: Maybe we should review the entire type handling system and | |
467 | see if there is a better way to avoid this problem. */ | |
468 | ||
469 | extern struct objfile *current_objfile; | |
470 | ||
471 | /* All known objfiles are kept in a linked list. This points to the | |
472 | root of this list. */ | |
473 | ||
474 | extern struct objfile *object_files; | |
475 | ||
476 | /* Declarations for functions defined in objfiles.c */ | |
477 | ||
a14ed312 | 478 | extern struct objfile *allocate_objfile (bfd *, int); |
c906108c | 479 | |
5e2b427d UW |
480 | extern struct gdbarch *get_objfile_arch (struct objfile *); |
481 | ||
9ab9195f EZ |
482 | extern void init_entry_point_info (struct objfile *); |
483 | ||
484 | extern CORE_ADDR entry_point_address (void); | |
485 | ||
a14ed312 | 486 | extern int build_objfile_section_table (struct objfile *); |
c906108c | 487 | |
15831452 JB |
488 | extern void terminate_minimal_symbol_table (struct objfile *objfile); |
489 | ||
5b5d99cf JB |
490 | extern void put_objfile_before (struct objfile *, struct objfile *); |
491 | ||
a14ed312 | 492 | extern void objfile_to_front (struct objfile *); |
c906108c | 493 | |
a14ed312 | 494 | extern void unlink_objfile (struct objfile *); |
c906108c | 495 | |
a14ed312 | 496 | extern void free_objfile (struct objfile *); |
c906108c | 497 | |
74b7792f AC |
498 | extern struct cleanup *make_cleanup_free_objfile (struct objfile *); |
499 | ||
a14ed312 | 500 | extern void free_all_objfiles (void); |
c906108c | 501 | |
a14ed312 | 502 | extern void objfile_relocate (struct objfile *, struct section_offsets *); |
c906108c | 503 | |
a14ed312 | 504 | extern int have_partial_symbols (void); |
c906108c | 505 | |
a14ed312 | 506 | extern int have_full_symbols (void); |
c906108c SS |
507 | |
508 | /* This operation deletes all objfile entries that represent solibs that | |
509 | weren't explicitly loaded by the user, via e.g., the add-symbol-file | |
510 | command. | |
c5aa993b | 511 | */ |
a14ed312 | 512 | extern void objfile_purge_solibs (void); |
c906108c SS |
513 | |
514 | /* Functions for dealing with the minimal symbol table, really a misc | |
515 | address<->symbol mapping for things we don't have debug symbols for. */ | |
516 | ||
a14ed312 | 517 | extern int have_minimal_symbols (void); |
c906108c | 518 | |
a14ed312 | 519 | extern struct obj_section *find_pc_section (CORE_ADDR pc); |
c906108c | 520 | |
a14ed312 KB |
521 | extern struct obj_section *find_pc_sect_section (CORE_ADDR pc, |
522 | asection * section); | |
c906108c | 523 | |
a14ed312 | 524 | extern int in_plt_section (CORE_ADDR, char *); |
c906108c | 525 | |
0d0e1a63 MK |
526 | /* Keep a registry of per-objfile data-pointers required by other GDB |
527 | modules. */ | |
528 | ||
529 | extern const struct objfile_data *register_objfile_data (void); | |
7b097ae3 | 530 | extern void clear_objfile_data (struct objfile *objfile); |
0d0e1a63 MK |
531 | extern void set_objfile_data (struct objfile *objfile, |
532 | const struct objfile_data *data, void *value); | |
533 | extern void *objfile_data (struct objfile *objfile, | |
534 | const struct objfile_data *data); | |
535 | \f | |
536 | ||
c906108c SS |
537 | /* Traverse all object files. ALL_OBJFILES_SAFE works even if you delete |
538 | the objfile during the traversal. */ | |
539 | ||
540 | #define ALL_OBJFILES(obj) \ | |
541 | for ((obj) = object_files; (obj) != NULL; (obj) = (obj)->next) | |
542 | ||
543 | #define ALL_OBJFILES_SAFE(obj,nxt) \ | |
544 | for ((obj) = object_files; \ | |
545 | (obj) != NULL? ((nxt)=(obj)->next,1) :0; \ | |
546 | (obj) = (nxt)) | |
547 | ||
548 | /* Traverse all symtabs in one objfile. */ | |
549 | ||
550 | #define ALL_OBJFILE_SYMTABS(objfile, s) \ | |
551 | for ((s) = (objfile) -> symtabs; (s) != NULL; (s) = (s) -> next) | |
552 | ||
553 | /* Traverse all psymtabs in one objfile. */ | |
554 | ||
555 | #define ALL_OBJFILE_PSYMTABS(objfile, p) \ | |
556 | for ((p) = (objfile) -> psymtabs; (p) != NULL; (p) = (p) -> next) | |
557 | ||
558 | /* Traverse all minimal symbols in one objfile. */ | |
559 | ||
560 | #define ALL_OBJFILE_MSYMBOLS(objfile, m) \ | |
22abf04a | 561 | for ((m) = (objfile) -> msymbols; DEPRECATED_SYMBOL_NAME(m) != NULL; (m)++) |
c906108c SS |
562 | |
563 | /* Traverse all symtabs in all objfiles. */ | |
564 | ||
565 | #define ALL_SYMTABS(objfile, s) \ | |
566 | ALL_OBJFILES (objfile) \ | |
567 | ALL_OBJFILE_SYMTABS (objfile, s) | |
568 | ||
11309657 DJ |
569 | /* Traverse all symtabs in all objfiles, skipping included files |
570 | (which share a blockvector with their primary symtab). */ | |
571 | ||
572 | #define ALL_PRIMARY_SYMTABS(objfile, s) \ | |
573 | ALL_OBJFILES (objfile) \ | |
574 | ALL_OBJFILE_SYMTABS (objfile, s) \ | |
575 | if ((s)->primary) | |
576 | ||
c906108c SS |
577 | /* Traverse all psymtabs in all objfiles. */ |
578 | ||
579 | #define ALL_PSYMTABS(objfile, p) \ | |
580 | ALL_OBJFILES (objfile) \ | |
581 | ALL_OBJFILE_PSYMTABS (objfile, p) | |
582 | ||
583 | /* Traverse all minimal symbols in all objfiles. */ | |
584 | ||
585 | #define ALL_MSYMBOLS(objfile, m) \ | |
586 | ALL_OBJFILES (objfile) \ | |
15831452 | 587 | ALL_OBJFILE_MSYMBOLS (objfile, m) |
c906108c SS |
588 | |
589 | #define ALL_OBJFILE_OSECTIONS(objfile, osect) \ | |
590 | for (osect = objfile->sections; osect < objfile->sections_end; osect++) | |
591 | ||
592 | #define ALL_OBJSECTIONS(objfile, osect) \ | |
593 | ALL_OBJFILES (objfile) \ | |
594 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
595 | ||
b8fbeb18 | 596 | #define SECT_OFF_DATA(objfile) \ |
8e65ff28 | 597 | ((objfile->sect_index_data == -1) \ |
e2e0b3e5 | 598 | ? (internal_error (__FILE__, __LINE__, _("sect_index_data not initialized")), -1) \ |
8e65ff28 | 599 | : objfile->sect_index_data) |
b8fbeb18 EZ |
600 | |
601 | #define SECT_OFF_RODATA(objfile) \ | |
8e65ff28 | 602 | ((objfile->sect_index_rodata == -1) \ |
e2e0b3e5 | 603 | ? (internal_error (__FILE__, __LINE__, _("sect_index_rodata not initialized")), -1) \ |
8e65ff28 | 604 | : objfile->sect_index_rodata) |
b8fbeb18 EZ |
605 | |
606 | #define SECT_OFF_TEXT(objfile) \ | |
8e65ff28 | 607 | ((objfile->sect_index_text == -1) \ |
e2e0b3e5 | 608 | ? (internal_error (__FILE__, __LINE__, _("sect_index_text not initialized")), -1) \ |
8e65ff28 | 609 | : objfile->sect_index_text) |
b8fbeb18 | 610 | |
a4c8257b EZ |
611 | /* Sometimes the .bss section is missing from the objfile, so we don't |
612 | want to die here. Let the users of SECT_OFF_BSS deal with an | |
613 | uninitialized section index. */ | |
614 | #define SECT_OFF_BSS(objfile) (objfile)->sect_index_bss | |
b8fbeb18 | 615 | |
c5aa993b | 616 | #endif /* !defined (OBJFILES_H) */ |