1 /* Include file for stabs debugging format support functions. 2 Copyright (C) 1986-2013 Free Software Foundation, Inc. 3 4 This file is part of GDB. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 18 19 struct objfile; 20 21 /* Definitions, prototypes, etc for stabs debugging format support 22 functions. 23 24 Variables declared in this file can be defined by #define-ing 25 the name EXTERN to null. It is used to declare variables that 26 are normally extern, but which get defined in a single module 27 using this technique. */ 28 29 #ifndef EXTERN 30 #define EXTERN extern 31 #endif 32 33 /* Hash table of global symbols whose values are not known yet. 34 They are chained thru the SYMBOL_VALUE_CHAIN, since we don't 35 have the correct data for that slot yet. 36 37 The use of the LOC_BLOCK code in this chain is nonstandard-- 38 it refers to a FORTRAN common block rather than the usual meaning, and 39 the such LOC_BLOCK symbols use their fields in nonstandard ways. */ 40 41 EXTERN struct symbol *global_sym_chain[HASHSIZE]; 42 43 extern void common_block_start (char *, struct objfile *); 44 extern void common_block_end (struct objfile *); 45 46 /* Kludge for xcoffread.c */ 47 48 struct pending_stabs 49 { 50 int count; 51 int length; 52 char *stab[1]; 53 }; 54 55 EXTERN struct pending_stabs *global_stabs; 56 57 /* The type code that process_one_symbol saw on its previous invocation. 58 Used to detect pairs of N_SO symbols. */ 59 60 EXTERN int previous_stab_code; 61 62 /* Support for Sun changes to dbx symbol format. */ 63 64 /* For each identified header file, we have a table of types defined 65 in that header file. 66 67 header_files maps header file names to their type tables. 68 It is a vector of n_header_files elements. 69 Each element describes one header file. 70 It contains a vector of types. 71 72 Sometimes it can happen that the same header file produces 73 different results when included in different places. 74 This can result from conditionals or from different 75 things done before including the file. 76 When this happens, there are multiple entries for the file in this table, 77 one entry for each distinct set of results. 78 The entries are distinguished by the INSTANCE field. 79 The INSTANCE field appears in the N_BINCL and N_EXCL symbol table and is 80 used to match header-file references to their corresponding data. */ 81 82 struct header_file 83 { 84 85 /* Name of header file */ 86 87 char *name; 88 89 /* Numeric code distinguishing instances of one header file that 90 produced different results when included. It comes from the 91 N_BINCL or N_EXCL. */ 92 93 int instance; 94 95 /* Pointer to vector of types */ 96 97 struct type **vector; 98 99 /* Allocated length (# elts) of that vector */ 100 101 int length; 102 103 }; 104 105 /* The table of header_files of this OBJFILE. */ 106 #define HEADER_FILES(OBJFILE) (DBX_SYMFILE_INFO (OBJFILE)->header_files) 107 108 /* The actual length of HEADER_FILES. */ 109 #define N_HEADER_FILES(OBJFILE) (DBX_SYMFILE_INFO (OBJFILE)->n_header_files) 110 111 /* The allocated lengh of HEADER_FILES. */ 112 #define N_ALLOCATED_HEADER_FILES(OBJFILE) \ 113 (DBX_SYMFILE_INFO (OBJFILE)->n_allocated_header_files) 114 115 /* Within each object file, various header files are assigned numbers. 116 A type is defined or referred to with a pair of numbers 117 (FILENUM,TYPENUM) where FILENUM is the number of the header file 118 and TYPENUM is the number within that header file. 119 TYPENUM is the index within the vector of types for that header file. 120 121 FILENUM == 0 is special; it refers to the main source of the object file, 122 and not to any header file. FILENUM != 1 is interpreted by looking it up 123 in the following table, which contains indices in header_files. */ 124 125 EXTERN int *this_object_header_files; 126 127 EXTERN int n_this_object_header_files; 128 129 EXTERN int n_allocated_this_object_header_files; 130 131 extern void cleanup_undefined_stabs_types (struct objfile *); 132 133 extern long read_number (char **, int); 134 135 extern struct symbol *define_symbol (CORE_ADDR, char *, int, int, 136 struct objfile *); 137 138 extern void stabsread_init (void); 139 140 extern void stabsread_new_init (void); 141 142 extern void start_stabs (void); 143 144 extern void end_stabs (void); 145 146 extern void finish_global_stabs (struct objfile *objfile); 147 148 /* COFF files can have multiple .stab sections, if they are linked 149 using --split-by-reloc. This linked list is used to pass the 150 information into the functions in dbxread.c. */ 151 struct stab_section_list 152 { 153 /* Next in list. */ 154 struct stab_section_list *next; 155 156 /* Stab section. */ 157 asection *section; 158 }; 159 160 /* Functions exported by dbxread.c. These are not in stabsread.c because 161 they are only used by some stabs readers. */ 162 163 extern struct partial_symtab *end_psymtab (struct objfile *objfile, 164 struct partial_symtab *pst, 165 const char **include_list, 166 int num_includes, 167 int capping_symbol_offset, 168 CORE_ADDR capping_text, 169 struct partial_symtab 170 **dependency_list, 171 int number_dependencies, 172 int textlow_not_set); 173 174 extern void process_one_symbol (int, int, CORE_ADDR, char *, 175 struct section_offsets *, struct objfile *); 176 177 extern void elfstab_build_psymtabs (struct objfile *objfile, 178 asection *stabsect, 179 file_ptr stabstroffset, 180 unsigned int stabstrsize); 181 182 extern void coffstab_build_psymtabs 183 (struct objfile *objfile, 184 CORE_ADDR textaddr, unsigned int textsize, 185 struct stab_section_list *stabs, 186 file_ptr stabstroffset, unsigned int stabstrsize); 187 188 extern void stabsect_build_psymtabs (struct objfile *objfile, char *stab_name, 189 char *stabstr_name, char *text_name); 190 191 extern void elfstab_offset_sections (struct objfile *, 192 struct partial_symtab *); 193 extern int symbol_reference_defined (char **); 194 195 extern void ref_add (int, struct symbol *, char *, CORE_ADDR); 196 197 extern struct symbol *ref_search (int); 198 199 extern void free_header_files (void); 200 201 extern void init_header_files (void); 202 203 #undef EXTERN 204