1 /* Include file for stabs debugging format support functions. 2 Copyright (C) 1986-2024 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 #ifndef STABSREAD_H 20 #define STABSREAD_H 21 22 struct objfile; 23 struct legacy_psymtab; 24 enum language; 25 26 /* Definitions, prototypes, etc for stabs debugging format support 27 functions. */ 28 29 #define HASHSIZE 127 /* Size of things hashed via 30 hashname(). */ 31 32 /* Compute a small integer hash code for the given name. */ 33 34 extern int hashname (const char *name); 35 36 /* Count symbols as they are processed, for error messages. */ 37 38 extern unsigned int symnum; 39 40 #define next_symbol_text(objfile) (*next_symbol_text_func)(objfile) 41 42 /* Function to invoke get the next symbol. Return the symbol name. */ 43 44 extern const char *(*next_symbol_text_func) (struct objfile *); 45 46 /* Global variable which, when set, indicates that we are processing a 47 .o file compiled with gcc */ 48 49 extern unsigned char processing_gcc_compilation; 50 51 /* Nonzero if within a function (so symbols should be local, if 52 nothing says specifically). */ 53 54 extern int within_function; 55 56 /* Hash table of global symbols whose values are not known yet. 57 They are chained thru the SYMBOL_VALUE_CHAIN, since we don't 58 have the correct data for that slot yet. 59 60 The use of the LOC_BLOCK code in this chain is nonstandard-- 61 it refers to a FORTRAN common block rather than the usual meaning, and 62 the such LOC_BLOCK symbols use their fields in nonstandard ways. */ 63 64 extern struct symbol *global_sym_chain[HASHSIZE]; 65 66 extern void common_block_start (const char *, struct objfile *); 67 extern void common_block_end (struct objfile *); 68 69 /* Kludge for xcoffread.c */ 70 71 struct pending_stabs 72 { 73 int count; 74 int length; 75 char *stab[1]; 76 }; 77 78 extern struct pending_stabs *global_stabs; 79 80 /* The type code that process_one_symbol saw on its previous invocation. 81 Used to detect pairs of N_SO symbols. */ 82 83 extern int previous_stab_code; 84 85 /* Support for Sun changes to dbx symbol format. */ 86 87 /* For each identified header file, we have a table of types defined 88 in that header file. 89 90 header_files maps header file names to their type tables. 91 It is a vector of n_header_files elements. 92 Each element describes one header file. 93 It contains a vector of types. 94 95 Sometimes it can happen that the same header file produces 96 different results when included in different places. 97 This can result from conditionals or from different 98 things done before including the file. 99 When this happens, there are multiple entries for the file in this table, 100 one entry for each distinct set of results. 101 The entries are distinguished by the INSTANCE field. 102 The INSTANCE field appears in the N_BINCL and N_EXCL symbol table and is 103 used to match header-file references to their corresponding data. */ 104 105 struct header_file 106 { 107 108 /* Name of header file */ 109 110 char *name; 111 112 /* Numeric code distinguishing instances of one header file that 113 produced different results when included. It comes from the 114 N_BINCL or N_EXCL. */ 115 116 int instance; 117 118 /* Pointer to vector of types */ 119 120 struct type **vector; 121 122 /* Allocated length (# elts) of that vector */ 123 124 int length; 125 126 }; 127 128 /* The table of header_files of this OBJFILE. */ 129 #define HEADER_FILES(OBJFILE) (DBX_SYMFILE_INFO (OBJFILE)->header_files) 130 131 /* The actual length of HEADER_FILES. */ 132 #define N_HEADER_FILES(OBJFILE) (DBX_SYMFILE_INFO (OBJFILE)->n_header_files) 133 134 /* The allocated lengh of HEADER_FILES. */ 135 #define N_ALLOCATED_HEADER_FILES(OBJFILE) \ 136 (DBX_SYMFILE_INFO (OBJFILE)->n_allocated_header_files) 137 138 /* Within each object file, various header files are assigned numbers. 139 A type is defined or referred to with a pair of numbers 140 (FILENUM,TYPENUM) where FILENUM is the number of the header file 141 and TYPENUM is the number within that header file. 142 TYPENUM is the index within the vector of types for that header file. 143 144 FILENUM == 0 is special; it refers to the main source of the object file, 145 and not to any header file. FILENUM != 1 is interpreted by looking it up 146 in the following table, which contains indices in header_files. */ 147 148 extern int *this_object_header_files; 149 150 extern int n_this_object_header_files; 151 152 extern int n_allocated_this_object_header_files; 153 154 extern void cleanup_undefined_stabs_types (struct objfile *); 155 156 extern long read_number (char **, int); 157 158 extern struct symbol *define_symbol (CORE_ADDR, const char *, int, int, 159 struct objfile *); 160 161 extern void stabsread_init (void); 162 163 extern void stabsread_new_init (void); 164 165 extern void start_stabs (void); 166 167 extern void end_stabs (void); 168 169 extern void finish_global_stabs (struct objfile *objfile); 170 171 class psymtab_storage; 172 173 /* Functions exported by dbxread.c. These are not in stabsread.c because 174 they are only used by some stabs readers. */ 175 176 extern legacy_psymtab *dbx_end_psymtab 177 (struct objfile *objfile, psymtab_storage *partial_symtabs, 178 legacy_psymtab *pst, 179 const char **include_list, int num_includes, 180 int capping_symbol_offset, unrelocated_addr capping_text, 181 legacy_psymtab **dependency_list, int number_dependencies, 182 int textlow_not_set); 183 184 extern void process_one_symbol (int, int, CORE_ADDR, const char *, 185 const section_offsets &, 186 struct objfile *, enum language); 187 188 extern void elfstab_build_psymtabs (struct objfile *objfile, 189 asection *stabsect, 190 file_ptr stabstroffset, 191 unsigned int stabstrsize); 192 193 extern void coffstab_build_psymtabs 194 (struct objfile *objfile, 195 CORE_ADDR textaddr, unsigned int textsize, 196 const std::vector<asection *> &stabs, 197 file_ptr stabstroffset, unsigned int stabstrsize); 198 199 extern void stabsect_build_psymtabs (struct objfile *objfile, char *stab_name, 200 char *stabstr_name, char *text_name); 201 202 extern int symbol_reference_defined (const char **); 203 204 extern void ref_add (int, struct symbol *, const char *, CORE_ADDR); 205 206 extern struct symbol *ref_search (int); 207 208 extern void free_header_files (void); 209 210 extern void init_header_files (void); 211 212 /* Scan through all of the global symbols defined in the object file, 213 assigning values to the debugging symbols that need to be assigned 214 to. Get these symbols from the minimal symbol table. */ 215 216 extern void scan_file_globals (struct objfile *objfile); 217 218 #endif /* STABSREAD_H */ 219