gdb/stabsread.h

   1 /* Include file for stabs debugging format support functions.
   2    Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
   3    1996, 1997, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 struct objfile;
  23
  24 /* Definitions, prototypes, etc for stabs debugging format support
  25    functions.
  26
  27    Variables declared in this file can be defined by #define-ing
  28    the name EXTERN to null.  It is used to declare variables that
  29    are normally extern, but which get defined in a single module
  30    using this technique.  */
  31
  32 #ifndef EXTERN
  33 #define EXTERN extern
  34 #endif
  35
  36 /* Hash table of global symbols whose values are not known yet.
  37    They are chained thru the SYMBOL_VALUE_CHAIN, since we don't
  38    have the correct data for that slot yet.
  39
  40    The use of the LOC_BLOCK code in this chain is nonstandard--
  41    it refers to a FORTRAN common block rather than the usual meaning, and
  42    the such LOC_BLOCK symbols use their fields in nonstandard ways.  */
  43
  44 EXTERN struct symbol *global_sym_chain[HASHSIZE];
  45
  46 extern void common_block_start (char *, struct objfile *);
  47 extern void common_block_end (struct objfile *);
  48
  49 /* Kludge for xcoffread.c */
  50
  51 struct pending_stabs
  52   {
  53     int count;
  54     int length;
  55     char *stab[1];
  56   };
  57
  58 EXTERN struct pending_stabs *global_stabs;
  59
  60 /* The type code that process_one_symbol saw on its previous invocation.
  61    Used to detect pairs of N_SO symbols. */
  62
  63 EXTERN int previous_stab_code;
  64 \f
  65 /* Support for Sun changes to dbx symbol format */
  66
  67 /* For each identified header file, we have a table of types defined
  68    in that header file.
  69
  70    header_files maps header file names to their type tables.
  71    It is a vector of n_header_files elements.
  72    Each element describes one header file.
  73    It contains a vector of types.
  74
  75    Sometimes it can happen that the same header file produces
  76    different results when included in different places.
  77    This can result from conditionals or from different
  78    things done before including the file.
  79    When this happens, there are multiple entries for the file in this table,
  80    one entry for each distinct set of results.
  81    The entries are distinguished by the INSTANCE field.
  82    The INSTANCE field appears in the N_BINCL and N_EXCL symbol table and is
  83    used to match header-file references to their corresponding data.  */
  84
  85 struct header_file
  86   {
  87
  88     /* Name of header file */
  89
  90     char *name;
  91
  92     /* Numeric code distinguishing instances of one header file that produced
  93        different results when included.  It comes from the 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 struct type *read_type (char **, struct objfile *);
 134
 135 extern void cleanup_undefined_types (void);
 136
 137 extern struct type **dbx_lookup_type (int[2]);
 138
 139 extern long read_number (char **, int);
 140
 141 extern void add_undefined_type (struct type *);
 142
 143 extern struct symbol *define_symbol (CORE_ADDR, char *, int, int,
 144                                      struct objfile *);
 145
 146 extern void stabsread_init (void);
 147
 148 extern void stabsread_new_init (void);
 149
 150 extern void start_stabs (void);
 151
 152 extern void end_stabs (void);
 153
 154 extern void finish_global_stabs (struct objfile *objfile);
 155 \f
 156 /* COFF files can have multiple .stab sections, if they are linked
 157    using --split-by-reloc.  This linked list is used to pass the
 158    information into the functions in dbxread.c.  */
 159 struct stab_section_list
 160   {
 161     /* Next in list.  */
 162     struct stab_section_list *next;
 163
 164     /* Stab section.  */
 165     asection *section;
 166   };
 167 \f
 168 /* Functions exported by dbxread.c.  These are not in stabsread.c because
 169    they are only used by some stabs readers.  */
 170
 171 extern struct partial_symtab *end_psymtab (struct partial_symtab *pst,
 172                                            char **include_list,
 173                                            int num_includes,
 174                                            int capping_symbol_offset,
 175                                            CORE_ADDR capping_text,
 176                                            struct partial_symtab
 177                                            **dependency_list,
 178                                            int number_dependencies,
 179                                            int textlow_not_set);
 180
 181 extern void process_one_symbol (int, int, CORE_ADDR, char *,
 182                                 struct section_offsets *, struct objfile *);
 183
 184 extern void elfstab_build_psymtabs (struct objfile *objfile,
 185                                     int mainline,
 186                                     asection *stabsect,
 187                                     file_ptr stabstroffset,
 188                                     unsigned int stabstrsize);
 189
 190 extern void coffstab_build_psymtabs
 191   (struct objfile *objfile,
 192    int mainline,
 193    CORE_ADDR textaddr, unsigned int textsize,
 194    struct stab_section_list *stabs,
 195    file_ptr stabstroffset, unsigned int stabstrsize);
 196
 197 extern void stabsect_build_psymtabs
 198   (struct objfile *objfile,
 199    int mainline, char *stab_name, char *stabstr_name, char *text_name);
 200
 201 extern void elfstab_offset_sections (struct objfile *,
 202                                      struct partial_symtab *);
 203 #if 0 /* OBSOLETE CFront */
 204 // OBSOLETE extern void process_later
 205 // OBSOLETE   (struct symbol *, char *,
 206 // OBSOLETE    int (*f) (struct objfile *, struct symbol *, char *));
 207 #endif /* OBSOLETE CFront */
 208
 209 extern int symbol_reference_defined (char **);
 210
 211 extern void ref_add (int, struct symbol *, char *, CORE_ADDR);
 212
 213 extern struct symbol *ref_search (int);
 214
 215 #if 0 /* OBSOLETE CFront */
 216 // OBSOLETE extern int resolve_cfront_continuation
 217 // OBSOLETE   (struct objfile *objfile, struct symbol *sym, char *p);
 218 #endif /* OBSOLETE CFront */
 219 extern void free_header_files (void);
 220
 221 extern void init_header_files (void);
 222
 223 #undef EXTERN