| 1 | /* Include file for stabs debugging format support functions. |
| 2 | Copyright (C) 1986-2015 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 | \f |
| 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 | \f |
| 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 | \f |
| 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 *dbx_end_psymtab |
| 164 | (struct objfile *objfile, struct partial_symtab *pst, |
| 165 | const char **include_list, int num_includes, |
| 166 | int capping_symbol_offset, CORE_ADDR capping_text, |
| 167 | struct partial_symtab **dependency_list, int number_dependencies, |
| 168 | int textlow_not_set); |
| 169 | |
| 170 | extern void process_one_symbol (int, int, CORE_ADDR, char *, |
| 171 | const struct section_offsets *, |
| 172 | struct objfile *); |
| 173 | |
| 174 | extern void elfstab_build_psymtabs (struct objfile *objfile, |
| 175 | asection *stabsect, |
| 176 | file_ptr stabstroffset, |
| 177 | unsigned int stabstrsize); |
| 178 | |
| 179 | extern void coffstab_build_psymtabs |
| 180 | (struct objfile *objfile, |
| 181 | CORE_ADDR textaddr, unsigned int textsize, |
| 182 | struct stab_section_list *stabs, |
| 183 | file_ptr stabstroffset, unsigned int stabstrsize); |
| 184 | |
| 185 | extern void stabsect_build_psymtabs (struct objfile *objfile, char *stab_name, |
| 186 | char *stabstr_name, char *text_name); |
| 187 | |
| 188 | extern int symbol_reference_defined (char **); |
| 189 | |
| 190 | extern void ref_add (int, struct symbol *, char *, CORE_ADDR); |
| 191 | |
| 192 | extern struct symbol *ref_search (int); |
| 193 | |
| 194 | extern void free_header_files (void); |
| 195 | |
| 196 | extern void init_header_files (void); |
| 197 | |
| 198 | #undef EXTERN |