1 /* Include file for stabs debugging format support functions. 2 Copyright (C) 1986-2019 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 enum language; 24 25 /* Definitions, prototypes, etc for stabs debugging format support 26 functions. */ 27 28 #define HASHSIZE 127 /* Size of things hashed via 29 hashname(). */ 30 31 /* Compute a small integer hash code for the given name. */ 32 33 extern int hashname (const char *name); 34 35 /* Count symbols as they are processed, for error messages. */ 36 37 extern unsigned int symnum; 38 39 #define next_symbol_text(objfile) (*next_symbol_text_func)(objfile) 40 41 /* Function to invoke get the next symbol. Return the symbol name. */ 42 43 extern const char *(*next_symbol_text_func) (struct objfile *); 44 45 /* Global variable which, when set, indicates that we are processing a 46 .o file compiled with gcc */ 47 48 extern unsigned char processing_gcc_compilation; 49 50 /* Nonzero if within a function (so symbols should be local, if 51 nothing says specifically). */ 52 53 extern int within_function; 54 55 /* Hash table of global symbols whose values are not known yet. 56 They are chained thru the SYMBOL_VALUE_CHAIN, since we don't 57 have the correct data for that slot yet. 58 59 The use of the LOC_BLOCK code in this chain is nonstandard-- 60 it refers to a FORTRAN common block rather than the usual meaning, and 61 the such LOC_BLOCK symbols use their fields in nonstandard ways. */ 62 63 extern struct symbol *global_sym_chain[HASHSIZE]; 64 65 extern void common_block_start (const char *, struct objfile *); 66 extern void common_block_end (struct objfile *); 67 68 /* Kludge for xcoffread.c */ 69 70 struct pending_stabs 71 { 72 int count; 73 int length; 74 char *stab[1]; 75 }; 76 77 extern struct pending_stabs *global_stabs; 78 79 /* The type code that process_one_symbol saw on its previous invocation. 80 Used to detect pairs of N_SO symbols. */ 81 82 extern int previous_stab_code; 83 84 /* Support for Sun changes to dbx symbol format. */ 85 86 /* For each identified header file, we have a table of types defined 87 in that header file. 88 89 header_files maps header file names to their type tables. 90 It is a vector of n_header_files elements. 91 Each element describes one header file. 92 It contains a vector of types. 93 94 Sometimes it can happen that the same header file produces 95 different results when included in different places. 96 This can result from conditionals or from different 97 things done before including the file. 98 When this happens, there are multiple entries for the file in this table, 99 one entry for each distinct set of results. 100 The entries are distinguished by the INSTANCE field. 101 The INSTANCE field appears in the N_BINCL and N_EXCL symbol table and is 102 used to match header-file references to their corresponding data. */ 103 104 struct header_file 105 { 106 107 /* Name of header file */ 108 109 char *name; 110 111 /* Numeric code distinguishing instances of one header file that 112 produced different results when included. It comes from the 113 N_BINCL or N_EXCL. */ 114 115 int instance; 116 117 /* Pointer to vector of types */ 118 119 struct type **vector; 120 121 /* Allocated length (# elts) of that vector */ 122 123 int length; 124 125 }; 126 127 /* The table of header_files of this OBJFILE. */ 128 #define HEADER_FILES(OBJFILE) (DBX_SYMFILE_INFO (OBJFILE)->header_files) 129 130 /* The actual length of HEADER_FILES. */ 131 #define N_HEADER_FILES(OBJFILE) (DBX_SYMFILE_INFO (OBJFILE)->n_header_files) 132 133 /* The allocated lengh of HEADER_FILES. */ 134 #define N_ALLOCATED_HEADER_FILES(OBJFILE) \ 135 (DBX_SYMFILE_INFO (OBJFILE)->n_allocated_header_files) 136 137 /* Within each object file, various header files are assigned numbers. 138 A type is defined or referred to with a pair of numbers 139 (FILENUM,TYPENUM) where FILENUM is the number of the header file 140 and TYPENUM is the number within that header file. 141 TYPENUM is the index within the vector of types for that header file. 142 143 FILENUM == 0 is special; it refers to the main source of the object file, 144 and not to any header file. FILENUM != 1 is interpreted by looking it up 145 in the following table, which contains indices in header_files. */ 146 147 extern int *this_object_header_files; 148 149 extern int n_this_object_header_files; 150 151 extern int n_allocated_this_object_header_files; 152 153 extern void cleanup_undefined_stabs_types (struct objfile *); 154 155 extern long read_number (char **, int); 156 157 extern struct symbol *define_symbol (CORE_ADDR, const char *, int, int, 158 struct objfile *); 159 160 extern void stabsread_init (void); 161 162 extern void stabsread_new_init (void); 163 164 extern void start_stabs (void); 165 166 extern void end_stabs (void); 167 168 extern void finish_global_stabs (struct objfile *objfile); 169 170 /* COFF files can have multiple .stab sections, if they are linked 171 using --split-by-reloc. This linked list is used to pass the 172 information into the functions in dbxread.c. */ 173 struct stab_section_list 174 { 175 /* Next in list. */ 176 struct stab_section_list *next; 177 178 /* Stab section. */ 179 asection *section; 180 }; 181 182 /* Functions exported by dbxread.c. These are not in stabsread.c because 183 they are only used by some stabs readers. */ 184 185 extern struct partial_symtab *dbx_end_psymtab 186 (struct objfile *objfile, struct partial_symtab *pst, 187 const char **include_list, int num_includes, 188 int capping_symbol_offset, CORE_ADDR capping_text, 189 struct partial_symtab **dependency_list, int number_dependencies, 190 int textlow_not_set); 191 192 extern void process_one_symbol (int, int, CORE_ADDR, const char *, 193 const struct section_offsets *, 194 struct objfile *, enum language); 195 196 extern void elfstab_build_psymtabs (struct objfile *objfile, 197 asection *stabsect, 198 file_ptr stabstroffset, 199 unsigned int stabstrsize); 200 201 extern void coffstab_build_psymtabs 202 (struct objfile *objfile, 203 CORE_ADDR textaddr, unsigned int textsize, 204 struct stab_section_list *stabs, 205 file_ptr stabstroffset, unsigned int stabstrsize); 206 207 extern void stabsect_build_psymtabs (struct objfile *objfile, char *stab_name, 208 char *stabstr_name, char *text_name); 209 210 extern int symbol_reference_defined (const char **); 211 212 extern void ref_add (int, struct symbol *, const char *, CORE_ADDR); 213 214 extern struct symbol *ref_search (int); 215 216 extern void free_header_files (void); 217 218 extern void init_header_files (void); 219 220 /* Scan through all of the global symbols defined in the object file, 221 assigning values to the debugging symbols that need to be assigned 222 to. Get these symbols from the minimal symbol table. */ 223 224 extern void scan_file_globals (struct objfile *objfile); 225 226 #endif /* STABSREAD_H */ 227