| 1 | /* Include file for stabs debugging format support functions. |
| 2 | Copyright (C) 1986-1992 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 2 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, write to the Free Software |
| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 19 | |
| 20 | /* Definitions, prototypes, etc for stabs debugging format support |
| 21 | functions. |
| 22 | |
| 23 | Variables declared in this file can be defined by #define-ing |
| 24 | the name EXTERN to null. It is used to declare variables that |
| 25 | are normally extern, but which get defined in a single module |
| 26 | using this technique. */ |
| 27 | |
| 28 | #ifndef EXTERN |
| 29 | #define EXTERN extern |
| 30 | #endif |
| 31 | |
| 32 | /* Convert stab register number (from `r' declaration) to a gdb REGNUM. */ |
| 33 | |
| 34 | #ifndef STAB_REG_TO_REGNUM |
| 35 | #define STAB_REG_TO_REGNUM(VALUE) (VALUE) |
| 36 | #endif |
| 37 | |
| 38 | /* Hash table of global symbols whose values are not known yet. |
| 39 | They are chained thru the SYMBOL_VALUE_CHAIN, since we don't |
| 40 | have the correct data for that slot yet. |
| 41 | |
| 42 | The use of the LOC_BLOCK code in this chain is nonstandard-- |
| 43 | it refers to a FORTRAN common block rather than the usual meaning. */ |
| 44 | |
| 45 | EXTERN struct symbol *global_sym_chain[HASHSIZE]; |
| 46 | |
| 47 | /* Kludge for xcoffread.c */ |
| 48 | |
| 49 | struct pending_stabs |
| 50 | { |
| 51 | int count; |
| 52 | int length; |
| 53 | char *stab[1]; |
| 54 | }; |
| 55 | |
| 56 | EXTERN struct pending_stabs *global_stabs; |
| 57 | |
| 58 | /* List of symbols declared since the last BCOMM. This list is a tail |
| 59 | of local_symbols. When ECOMM is seen, the symbols on the list |
| 60 | are noted so their proper addresses can be filled in later, |
| 61 | using the common block base address gotten from the assembler |
| 62 | stabs. */ |
| 63 | |
| 64 | EXTERN struct pending *common_block; |
| 65 | EXTERN int common_block_i; |
| 66 | |
| 67 | /* The type code that process_one_symbol saw on its previous invocation. |
| 68 | Used to detect pairs of N_SO symbols. */ |
| 69 | |
| 70 | EXTERN int previous_stab_code; |
| 71 | |
| 72 | /* Setup a define to deal cleanly with the underscore problem */ |
| 73 | |
| 74 | #ifdef NAMES_HAVE_UNDERSCORE |
| 75 | #define HASH_OFFSET 1 |
| 76 | #else |
| 77 | #define HASH_OFFSET 0 |
| 78 | #endif |
| 79 | |
| 80 | \f |
| 81 | /* Support for Sun changes to dbx symbol format */ |
| 82 | |
| 83 | /* For each identified header file, we have a table of types defined |
| 84 | in that header file. |
| 85 | |
| 86 | header_files maps header file names to their type tables. |
| 87 | It is a vector of n_header_files elements. |
| 88 | Each element describes one header file. |
| 89 | It contains a vector of types. |
| 90 | |
| 91 | Sometimes it can happen that the same header file produces |
| 92 | different results when included in different places. |
| 93 | This can result from conditionals or from different |
| 94 | things done before including the file. |
| 95 | When this happens, there are multiple entries for the file in this table, |
| 96 | one entry for each distinct set of results. |
| 97 | The entries are distinguished by the INSTANCE field. |
| 98 | The INSTANCE field appears in the N_BINCL and N_EXCL symbol table and is |
| 99 | used to match header-file references to their corresponding data. */ |
| 100 | |
| 101 | struct header_file |
| 102 | { |
| 103 | |
| 104 | /* Name of header file */ |
| 105 | |
| 106 | char *name; |
| 107 | |
| 108 | /* Numeric code distinguishing instances of one header file that produced |
| 109 | different results when included. It comes from the N_BINCL or N_EXCL. */ |
| 110 | |
| 111 | int instance; |
| 112 | |
| 113 | /* Pointer to vector of types */ |
| 114 | |
| 115 | struct type **vector; |
| 116 | |
| 117 | /* Allocated length (# elts) of that vector */ |
| 118 | |
| 119 | int length; |
| 120 | |
| 121 | }; |
| 122 | |
| 123 | EXTERN struct header_file *header_files; |
| 124 | |
| 125 | EXTERN int n_header_files; |
| 126 | |
| 127 | EXTERN int n_allocated_header_files; |
| 128 | |
| 129 | /* Within each object file, various header files are assigned numbers. |
| 130 | A type is defined or referred to with a pair of numbers |
| 131 | (FILENUM,TYPENUM) where FILENUM is the number of the header file |
| 132 | and TYPENUM is the number within that header file. |
| 133 | TYPENUM is the index within the vector of types for that header file. |
| 134 | |
| 135 | FILENUM == 1 is special; it refers to the main source of the object file, |
| 136 | and not to any header file. FILENUM != 1 is interpreted by looking it up |
| 137 | in the following table, which contains indices in header_files. */ |
| 138 | |
| 139 | EXTERN int *this_object_header_files; |
| 140 | |
| 141 | EXTERN int n_this_object_header_files; |
| 142 | |
| 143 | EXTERN int n_allocated_this_object_header_files; |
| 144 | |
| 145 | extern struct complaint unknown_symtype_complaint; |
| 146 | |
| 147 | extern void |
| 148 | read_type_number PARAMS ((char **, int *)); |
| 149 | |
| 150 | extern struct type * |
| 151 | read_type PARAMS ((char **, struct objfile *)); |
| 152 | |
| 153 | extern void |
| 154 | cleanup_undefined_types PARAMS ((void)); |
| 155 | |
| 156 | extern struct type ** |
| 157 | dbx_lookup_type PARAMS ((int [2])); |
| 158 | |
| 159 | extern long |
| 160 | read_number PARAMS ((char **, int)); |
| 161 | |
| 162 | extern void |
| 163 | add_undefined_type PARAMS ((struct type *)); |
| 164 | |
| 165 | extern struct symbol * |
| 166 | define_symbol PARAMS ((unsigned int, char *, int, int, struct objfile *)); |
| 167 | |
| 168 | extern struct partial_symtab * |
| 169 | start_psymtab PARAMS ((struct objfile *, struct section_offsets *, char *, |
| 170 | CORE_ADDR, int, struct partial_symbol *, |
| 171 | struct partial_symbol *)); |
| 172 | |
| 173 | extern void |
| 174 | end_psymtab PARAMS ((struct partial_symtab *, char **, int, int, CORE_ADDR, |
| 175 | struct partial_symtab **, int)); |
| 176 | |
| 177 | extern void |
| 178 | process_one_symbol PARAMS ((int, int, CORE_ADDR, char *, |
| 179 | struct section_offsets *, struct objfile *)); |
| 180 | |
| 181 | extern void |
| 182 | stabsread_init PARAMS ((void)); |
| 183 | |
| 184 | extern void |
| 185 | stabsread_new_init PARAMS ((void)); |
| 186 | |
| 187 | extern void |
| 188 | start_stabs PARAMS ((void)); |
| 189 | |
| 190 | extern void |
| 191 | end_stabs PARAMS ((void)); |
| 192 | |
| 193 | extern void |
| 194 | finish_global_stabs PARAMS ((struct objfile *objfile)); |
| 195 | |
| 196 | #undef EXTERN |