1 /* Include file for stabs debugging format support functions. 2 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 3 1996, 1997, 1999, 2000, 2001, 2002, 2003, 2007, 2008, 2009, 2010, 2011 4 Free Software Foundation, Inc. 5 6 This file is part of GDB. 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 3 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 20 21 struct objfile; 22 23 /* Definitions, prototypes, etc for stabs debugging format support 24 functions. 25 26 Variables declared in this file can be defined by #define-ing 27 the name EXTERN to null. It is used to declare variables that 28 are normally extern, but which get defined in a single module 29 using this technique. */ 30 31 #ifndef EXTERN 32 #define EXTERN extern 33 #endif 34 35 /* Hash table of global symbols whose values are not known yet. 36 They are chained thru the SYMBOL_VALUE_CHAIN, since we don't 37 have the correct data for that slot yet. 38 39 The use of the LOC_BLOCK code in this chain is nonstandard-- 40 it refers to a FORTRAN common block rather than the usual meaning, and 41 the such LOC_BLOCK symbols use their fields in nonstandard ways. */ 42 43 EXTERN struct symbol *global_sym_chain[HASHSIZE]; 44 45 extern void common_block_start (char *, struct objfile *); 46 extern void common_block_end (struct objfile *); 47 48 /* Kludge for xcoffread.c */ 49 50 struct pending_stabs 51 { 52 int count; 53 int length; 54 char *stab[1]; 55 }; 56 57 EXTERN struct pending_stabs *global_stabs; 58 59 /* The type code that process_one_symbol saw on its previous invocation. 60 Used to detect pairs of N_SO symbols. */ 61 62 EXTERN int previous_stab_code; 63 64 /* Support for Sun changes to dbx symbol format. */ 65 66 /* For each identified header file, we have a table of types defined 67 in that header file. 68 69 header_files maps header file names to their type tables. 70 It is a vector of n_header_files elements. 71 Each element describes one header file. 72 It contains a vector of types. 73 74 Sometimes it can happen that the same header file produces 75 different results when included in different places. 76 This can result from conditionals or from different 77 things done before including the file. 78 When this happens, there are multiple entries for the file in this table, 79 one entry for each distinct set of results. 80 The entries are distinguished by the INSTANCE field. 81 The INSTANCE field appears in the N_BINCL and N_EXCL symbol table and is 82 used to match header-file references to their corresponding data. */ 83 84 struct header_file 85 { 86 87 /* Name of header file */ 88 89 char *name; 90 91 /* Numeric code distinguishing instances of one header file that 92 produced different results when included. It comes from the 93 N_BINCL or N_EXCL. */ 94 95 int instance; 96 97 /* Pointer to vector of types */ 98 99 struct type **vector; 100 101 /* Allocated length (# elts) of that vector */ 102 103 int length; 104 105 }; 106 107 /* The table of header_files of this OBJFILE. */ 108 #define HEADER_FILES(OBJFILE) (DBX_SYMFILE_INFO (OBJFILE)->header_files) 109 110 /* The actual length of HEADER_FILES. */ 111 #define N_HEADER_FILES(OBJFILE) (DBX_SYMFILE_INFO (OBJFILE)->n_header_files) 112 113 /* The allocated lengh of HEADER_FILES. */ 114 #define N_ALLOCATED_HEADER_FILES(OBJFILE) \ 115 (DBX_SYMFILE_INFO (OBJFILE)->n_allocated_header_files) 116 117 /* Within each object file, various header files are assigned numbers. 118 A type is defined or referred to with a pair of numbers 119 (FILENUM,TYPENUM) where FILENUM is the number of the header file 120 and TYPENUM is the number within that header file. 121 TYPENUM is the index within the vector of types for that header file. 122 123 FILENUM == 0 is special; it refers to the main source of the object file, 124 and not to any header file. FILENUM != 1 is interpreted by looking it up 125 in the following table, which contains indices in header_files. */ 126 127 EXTERN int *this_object_header_files; 128 129 EXTERN int n_this_object_header_files; 130 131 EXTERN int n_allocated_this_object_header_files; 132 133 extern void cleanup_undefined_types (struct objfile *); 134 135 extern long read_number (char **, int); 136 137 extern struct symbol *define_symbol (CORE_ADDR, char *, int, int, 138 struct objfile *); 139 140 extern void stabsread_init (void); 141 142 extern void stabsread_new_init (void); 143 144 extern void start_stabs (void); 145 146 extern void end_stabs (void); 147 148 extern void finish_global_stabs (struct objfile *objfile); 149 150 /* COFF files can have multiple .stab sections, if they are linked 151 using --split-by-reloc. This linked list is used to pass the 152 information into the functions in dbxread.c. */ 153 struct stab_section_list 154 { 155 /* Next in list. */ 156 struct stab_section_list *next; 157 158 /* Stab section. */ 159 asection *section; 160 }; 161 162 /* Functions exported by dbxread.c. These are not in stabsread.c because 163 they are only used by some stabs readers. */ 164 165 extern struct partial_symtab *end_psymtab (struct partial_symtab *pst, 166 char **include_list, 167 int num_includes, 168 int capping_symbol_offset, 169 CORE_ADDR capping_text, 170 struct partial_symtab 171 **dependency_list, 172 int number_dependencies, 173 int textlow_not_set); 174 175 extern void process_one_symbol (int, int, CORE_ADDR, char *, 176 struct section_offsets *, struct objfile *); 177 178 extern void elfstab_build_psymtabs (struct objfile *objfile, 179 asection *stabsect, 180 file_ptr stabstroffset, 181 unsigned int stabstrsize); 182 183 extern void coffstab_build_psymtabs 184 (struct objfile *objfile, 185 CORE_ADDR textaddr, unsigned int textsize, 186 struct stab_section_list *stabs, 187 file_ptr stabstroffset, unsigned int stabstrsize); 188 189 extern void stabsect_build_psymtabs (struct objfile *objfile, char *stab_name, 190 char *stabstr_name, char *text_name); 191 192 extern void elfstab_offset_sections (struct objfile *, 193 struct partial_symtab *); 194 extern int symbol_reference_defined (char **); 195 196 extern void ref_add (int, struct symbol *, char *, CORE_ADDR); 197 198 extern struct symbol *ref_search (int); 199 200 extern void free_header_files (void); 201 202 extern void init_header_files (void); 203 204 #undef EXTERN 205