| 1 | /* Build symbol tables in GDB's internal format. |
| 2 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1995, 1996, |
| 3 | 1997, 1998, 1999, 2000, 2002, 2003, 2007 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 20 | Boston, MA 02110-1301, USA. */ |
| 21 | |
| 22 | #if !defined (BUILDSYM_H) |
| 23 | #define BUILDSYM_H 1 |
| 24 | |
| 25 | struct objfile; |
| 26 | struct symbol; |
| 27 | |
| 28 | /* This module provides definitions used for creating and adding to |
| 29 | the symbol table. These routines are called from various symbol- |
| 30 | file-reading routines. |
| 31 | |
| 32 | They originated in dbxread.c of gdb-4.2, and were split out to |
| 33 | make xcoffread.c more maintainable by sharing code. |
| 34 | |
| 35 | Variables declared in this file can be defined by #define-ing the |
| 36 | name EXTERN to null. It is used to declare variables that are |
| 37 | normally extern, but which get defined in a single module using |
| 38 | this technique. */ |
| 39 | |
| 40 | struct block; |
| 41 | |
| 42 | #ifndef EXTERN |
| 43 | #define EXTERN extern |
| 44 | #endif |
| 45 | |
| 46 | #define HASHSIZE 127 /* Size of things hashed via |
| 47 | hashname() */ |
| 48 | |
| 49 | /* Name of source file whose symbol data we are now processing. This |
| 50 | comes from a symbol of type N_SO. */ |
| 51 | |
| 52 | EXTERN char *last_source_file; |
| 53 | |
| 54 | /* Core address of start of text of current source file. This too |
| 55 | comes from the N_SO symbol. */ |
| 56 | |
| 57 | EXTERN CORE_ADDR last_source_start_addr; |
| 58 | |
| 59 | /* The list of sub-source-files within the current individual |
| 60 | compilation. Each file gets its own symtab with its own linetable |
| 61 | and associated info, but they all share one blockvector. */ |
| 62 | |
| 63 | struct subfile |
| 64 | { |
| 65 | struct subfile *next; |
| 66 | char *name; |
| 67 | char *dirname; |
| 68 | struct linetable *line_vector; |
| 69 | int line_vector_length; |
| 70 | enum language language; |
| 71 | char *producer; |
| 72 | char *debugformat; |
| 73 | struct symtab *symtab; |
| 74 | }; |
| 75 | |
| 76 | EXTERN struct subfile *subfiles; |
| 77 | |
| 78 | EXTERN struct subfile *current_subfile; |
| 79 | |
| 80 | /* Global variable which, when set, indicates that we are processing a |
| 81 | .o file compiled with gcc */ |
| 82 | |
| 83 | EXTERN unsigned char processing_gcc_compilation; |
| 84 | |
| 85 | /* When set, we are processing a .o file compiled by sun acc. This is |
| 86 | misnamed; it refers to all stabs-in-elf implementations which use |
| 87 | N_UNDF the way Sun does, including Solaris gcc. Hopefully all |
| 88 | stabs-in-elf implementations ever invented will choose to be |
| 89 | compatible. */ |
| 90 | |
| 91 | EXTERN unsigned char processing_acc_compilation; |
| 92 | |
| 93 | /* Count symbols as they are processed, for error messages. */ |
| 94 | |
| 95 | EXTERN unsigned int symnum; |
| 96 | |
| 97 | /* Record the symbols defined for each context in a list. We don't |
| 98 | create a struct block for the context until we know how long to |
| 99 | make it. */ |
| 100 | |
| 101 | #define PENDINGSIZE 100 |
| 102 | |
| 103 | struct pending |
| 104 | { |
| 105 | struct pending *next; |
| 106 | int nsyms; |
| 107 | struct symbol *symbol[PENDINGSIZE]; |
| 108 | }; |
| 109 | |
| 110 | /* Here are the three lists that symbols are put on. */ |
| 111 | |
| 112 | /* static at top level, and types */ |
| 113 | |
| 114 | EXTERN struct pending *file_symbols; |
| 115 | |
| 116 | /* global functions and variables */ |
| 117 | |
| 118 | EXTERN struct pending *global_symbols; |
| 119 | |
| 120 | /* everything local to lexical context */ |
| 121 | |
| 122 | EXTERN struct pending *local_symbols; |
| 123 | |
| 124 | /* func params local to lexical context */ |
| 125 | |
| 126 | EXTERN struct pending *param_symbols; |
| 127 | |
| 128 | /* Stack representing unclosed lexical contexts (that will become |
| 129 | blocks, eventually). */ |
| 130 | |
| 131 | struct context_stack |
| 132 | { |
| 133 | /* Outer locals at the time we entered */ |
| 134 | |
| 135 | struct pending *locals; |
| 136 | |
| 137 | /* Pending func params at the time we entered */ |
| 138 | |
| 139 | struct pending *params; |
| 140 | |
| 141 | /* Pointer into blocklist as of entry */ |
| 142 | |
| 143 | struct pending_block *old_blocks; |
| 144 | |
| 145 | /* Name of function, if any, defining context */ |
| 146 | |
| 147 | struct symbol *name; |
| 148 | |
| 149 | /* PC where this context starts */ |
| 150 | |
| 151 | CORE_ADDR start_addr; |
| 152 | |
| 153 | /* Temp slot for exception handling. */ |
| 154 | |
| 155 | CORE_ADDR end_addr; |
| 156 | |
| 157 | /* For error-checking matching push/pop */ |
| 158 | |
| 159 | int depth; |
| 160 | |
| 161 | }; |
| 162 | |
| 163 | EXTERN struct context_stack *context_stack; |
| 164 | |
| 165 | /* Index of first unused entry in context stack. */ |
| 166 | |
| 167 | EXTERN int context_stack_depth; |
| 168 | |
| 169 | /* Currently allocated size of context stack. */ |
| 170 | |
| 171 | EXTERN int context_stack_size; |
| 172 | |
| 173 | /* Non-zero if the context stack is empty. */ |
| 174 | #define outermost_context_p() (context_stack_depth == 0) |
| 175 | |
| 176 | /* Nonzero if within a function (so symbols should be local, if |
| 177 | nothing says specifically). */ |
| 178 | |
| 179 | EXTERN int within_function; |
| 180 | |
| 181 | /* List of blocks already made (lexical contexts already closed). |
| 182 | This is used at the end to make the blockvector. */ |
| 183 | |
| 184 | struct pending_block |
| 185 | { |
| 186 | struct pending_block *next; |
| 187 | struct block *block; |
| 188 | }; |
| 189 | |
| 190 | /* Pointer to the head of a linked list of symbol blocks which have |
| 191 | already been finalized (lexical contexts already closed) and which |
| 192 | are just waiting to be built into a blockvector when finalizing the |
| 193 | associated symtab. */ |
| 194 | |
| 195 | EXTERN struct pending_block *pending_blocks; |
| 196 | \f |
| 197 | |
| 198 | struct subfile_stack |
| 199 | { |
| 200 | struct subfile_stack *next; |
| 201 | char *name; |
| 202 | }; |
| 203 | |
| 204 | EXTERN struct subfile_stack *subfile_stack; |
| 205 | |
| 206 | #define next_symbol_text(objfile) (*next_symbol_text_func)(objfile) |
| 207 | |
| 208 | /* Function to invoke get the next symbol. Return the symbol name. */ |
| 209 | |
| 210 | EXTERN char *(*next_symbol_text_func) (struct objfile *); |
| 211 | |
| 212 | /* Vector of types defined so far, indexed by their type numbers. |
| 213 | Used for both stabs and coff. (In newer sun systems, dbx uses a |
| 214 | pair of numbers in parens, as in "(SUBFILENUM,NUMWITHINSUBFILE)". |
| 215 | Then these numbers must be translated through the type_translations |
| 216 | hash table to get the index into the type vector.) */ |
| 217 | |
| 218 | EXTERN struct type **type_vector; |
| 219 | |
| 220 | /* Number of elements allocated for type_vector currently. */ |
| 221 | |
| 222 | EXTERN int type_vector_length; |
| 223 | |
| 224 | /* Initial size of type vector. Is realloc'd larger if needed, and |
| 225 | realloc'd down to the size actually used, when completed. */ |
| 226 | |
| 227 | #define INITIAL_TYPE_VECTOR_LENGTH 160 |
| 228 | |
| 229 | extern void add_free_pendings (struct pending *list); |
| 230 | |
| 231 | extern void add_symbol_to_list (struct symbol *symbol, |
| 232 | struct pending **listhead); |
| 233 | |
| 234 | extern struct symbol *find_symbol_in_list (struct pending *list, |
| 235 | char *name, int length); |
| 236 | |
| 237 | extern void finish_block (struct symbol *symbol, |
| 238 | struct pending **listhead, |
| 239 | struct pending_block *old_blocks, |
| 240 | CORE_ADDR start, CORE_ADDR end, |
| 241 | struct objfile *objfile); |
| 242 | |
| 243 | extern void really_free_pendings (void *dummy); |
| 244 | |
| 245 | extern void start_subfile (char *name, char *dirname); |
| 246 | |
| 247 | extern void patch_subfile_names (struct subfile *subfile, char *name); |
| 248 | |
| 249 | extern void push_subfile (void); |
| 250 | |
| 251 | extern char *pop_subfile (void); |
| 252 | |
| 253 | extern struct symtab *end_symtab (CORE_ADDR end_addr, |
| 254 | struct objfile *objfile, int section); |
| 255 | |
| 256 | /* Defined in stabsread.c. */ |
| 257 | |
| 258 | extern void scan_file_globals (struct objfile *objfile); |
| 259 | |
| 260 | extern void buildsym_new_init (void); |
| 261 | |
| 262 | extern void buildsym_init (void); |
| 263 | |
| 264 | extern struct context_stack *push_context (int desc, CORE_ADDR valu); |
| 265 | |
| 266 | extern struct context_stack *pop_context (void); |
| 267 | |
| 268 | extern void record_line (struct subfile *subfile, int line, CORE_ADDR pc); |
| 269 | |
| 270 | extern void start_symtab (char *name, char *dirname, CORE_ADDR start_addr); |
| 271 | |
| 272 | extern int hashname (char *name); |
| 273 | |
| 274 | extern void free_pending_blocks (void); |
| 275 | |
| 276 | /* FIXME: Note that this is used only in buildsym.c and dstread.c, |
| 277 | which should be fixed to not need direct access to |
| 278 | record_pending_block. */ |
| 279 | |
| 280 | extern void record_pending_block (struct objfile *objfile, |
| 281 | struct block *block, |
| 282 | struct pending_block *opblock); |
| 283 | |
| 284 | extern void record_debugformat (char *format); |
| 285 | |
| 286 | extern void record_producer (const char *producer); |
| 287 | |
| 288 | extern void merge_symbol_lists (struct pending **srclist, |
| 289 | struct pending **targetlist); |
| 290 | |
| 291 | /* The macro table for the compilation unit whose symbols we're |
| 292 | currently reading. All the symtabs for this CU will point to this. */ |
| 293 | EXTERN struct macro_table *pending_macros; |
| 294 | |
| 295 | #undef EXTERN |
| 296 | |
| 297 | #endif /* defined (BUILDSYM_H) */ |