1 /* Private partial symbol table definitions. 2 3 Copyright (C) 2009, 2010, 2011 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 3 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, see <http://www.gnu.org/licenses/>. */ 19 20 #ifndef PSYMPRIV_H 21 #define PSYMPRIV_H 22 23 #include "psymtab.h" 24 25 struct psymbol_allocation_list; 26 27 /* A partial_symbol records the name, domain, and address class of 28 symbols whose types we have not parsed yet. For functions, it also 29 contains their memory address, so we can find them from a PC value. 30 Each partial_symbol sits in a partial_symtab, all of which are chained 31 on a partial symtab list and which points to the corresponding 32 normal symtab once the partial_symtab has been referenced. */ 33 34 /* This structure is space critical. See space comments at the top of 35 symtab.h. */ 36 37 struct partial_symbol 38 { 39 40 /* The general symbol info required for all types of symbols. */ 41 42 struct general_symbol_info ginfo; 43 44 /* Name space code. */ 45 46 ENUM_BITFIELD(domain_enum_tag) domain : 6; 47 48 /* Address class (for info_symbols). */ 49 50 ENUM_BITFIELD(address_class) aclass : 6; 51 52 }; 53 54 #define PSYMBOL_DOMAIN(psymbol) (psymbol)->domain 55 #define PSYMBOL_CLASS(psymbol) (psymbol)->aclass 56 57 /* Each source file that has not been fully read in is represented by 58 a partial_symtab. This contains the information on where in the 59 executable the debugging symbols for a specific file are, and a 60 list of names of global symbols which are located in this file. 61 They are all chained on partial symtab lists. 62 63 Even after the source file has been read into a symtab, the 64 partial_symtab remains around. They are allocated on an obstack, 65 objfile_obstack. */ 66 67 struct partial_symtab 68 { 69 70 /* Chain of all existing partial symtabs. */ 71 72 struct partial_symtab *next; 73 74 /* Name of the source file which this partial_symtab defines. */ 75 76 const char *filename; 77 78 /* Full path of the source file. NULL if not known. */ 79 80 char *fullname; 81 82 /* Directory in which it was compiled, or NULL if we don't know. */ 83 84 const char *dirname; 85 86 /* Information about the object file from which symbols should be read. */ 87 88 struct objfile *objfile; 89 90 /* Set of relocation offsets to apply to each section. */ 91 92 struct section_offsets *section_offsets; 93 94 /* Range of text addresses covered by this file; texthigh is the 95 beginning of the next section. */ 96 97 CORE_ADDR textlow; 98 CORE_ADDR texthigh; 99 100 /* Array of pointers to all of the partial_symtab's which this one 101 depends on. Since this array can only be set to previous or 102 the current (?) psymtab, this dependency tree is guaranteed not 103 to have any loops. "depends on" means that symbols must be read 104 for the dependencies before being read for this psymtab; this is 105 for type references in stabs, where if foo.c includes foo.h, declarations 106 in foo.h may use type numbers defined in foo.c. For other debugging 107 formats there may be no need to use dependencies. */ 108 109 struct partial_symtab **dependencies; 110 111 int number_of_dependencies; 112 113 /* Global symbol list. This list will be sorted after readin to 114 improve access. Binary search will be the usual method of 115 finding a symbol within it. globals_offset is an integer offset 116 within global_psymbols[]. */ 117 118 int globals_offset; 119 int n_global_syms; 120 121 /* Static symbol list. This list will *not* be sorted after readin; 122 to find a symbol in it, exhaustive search must be used. This is 123 reasonable because searches through this list will eventually 124 lead to either the read in of a files symbols for real (assumed 125 to take a *lot* of time; check) or an error (and we don't care 126 how long errors take). This is an offset and size within 127 static_psymbols[]. */ 128 129 int statics_offset; 130 int n_static_syms; 131 132 /* Non-zero if the symtab corresponding to this psymtab has been 133 readin. This is located here so that this structure packs better 134 on 64-bit systems. */ 135 136 unsigned char readin; 137 138 /* Pointer to symtab eventually allocated for this source file, 0 if 139 !readin or if we haven't looked for the symtab after it was readin. */ 140 141 struct symtab *symtab; 142 143 /* Pointer to function which will read in the symtab corresponding to 144 this psymtab. */ 145 146 void (*read_symtab) (struct partial_symtab *); 147 148 /* Information that lets read_symtab() locate the part of the symbol table 149 that this psymtab corresponds to. This information is private to the 150 format-dependent symbol reading routines. For further detail examine 151 the various symbol reading modules. */ 152 153 void *read_symtab_private; 154 }; 155 156 extern void sort_pst_symbols (struct partial_symtab *); 157 158 /* Add any kind of symbol to a psymbol_allocation_list. */ 159 160 extern const 161 struct partial_symbol *add_psymbol_to_list (const char *, int, 162 int, domain_enum, 163 enum address_class, 164 struct psymbol_allocation_list *, 165 long, CORE_ADDR, 166 enum language, struct objfile *); 167 168 extern void init_psymbol_list (struct objfile *, int); 169 170 extern struct partial_symtab *start_psymtab_common (struct objfile *, 171 struct section_offsets *, 172 const char *, CORE_ADDR, 173 struct partial_symbol **, 174 struct partial_symbol **); 175 176 extern struct partial_symtab *allocate_psymtab (const char *, 177 struct objfile *); 178 179 extern void discard_psymtab (struct partial_symtab *); 180 181 /* Traverse all psymtabs in one objfile. */ 182 183 #define ALL_OBJFILE_PSYMTABS(objfile, p) \ 184 for ((p) = (objfile) -> psymtabs; (p) != NULL; (p) = (p) -> next) 185 186 #endif /* PSYMPRIV_H */ 187