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