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 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 /* Definitions, prototypes, etc for stabs debugging format support
  23    functions.
  24
  25    Variables declared in this file can be defined by #define-ing
  26    the name EXTERN to null.  It is used to declare variables that
  27    are normally extern, but which get defined in a single module
  28    using this technique.  */
  29
  30 #ifndef EXTERN
  31 #define EXTERN extern
  32 #endif
  33
  34 /* Hash table of global symbols whose values are not known yet.
  35    They are chained thru the SYMBOL_VALUE_CHAIN, since we don't
  36    have the correct data for that slot yet.
  37
  38    The use of the LOC_BLOCK code in this chain is nonstandard--
  39    it refers to a FORTRAN common block rather than the usual meaning, and
  40    the such LOC_BLOCK symbols use their fields in nonstandard ways.  */
  41
  42 EXTERN struct symbol *global_sym_chain[HASHSIZE];
  43
  44 extern void common_block_start (char *, struct objfile *);
  45 extern void common_block_end (struct objfile *);
  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 /* The type code that process_one_symbol saw on its previous invocation.
  59    Used to detect pairs of N_SO symbols. */
  60
  61 EXTERN int previous_stab_code;
  62 \f
  63 /* Support for Sun changes to dbx symbol format */
  64
  65 /* For each identified header file, we have a table of types defined
  66    in that header file.
  67
  68    header_files maps header file names to their type tables.
  69    It is a vector of n_header_files elements.
  70    Each element describes one header file.
  71    It contains a vector of types.
  72
  73    Sometimes it can happen that the same header file produces
  74    different results when included in different places.
  75    This can result from conditionals or from different
  76    things done before including the file.
  77    When this happens, there are multiple entries for the file in this table,
  78    one entry for each distinct set of results.
  79    The entries are distinguished by the INSTANCE field.
  80    The INSTANCE field appears in the N_BINCL and N_EXCL symbol table and is
  81    used to match header-file references to their corresponding data.  */
  82
  83 struct header_file
  84   {
  85
  86     /* Name of header file */
  87
  88     char *name;
  89
  90     /* Numeric code distinguishing instances of one header file that produced
  91        different results when included.  It comes from the 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 struct type *read_type (char **, struct objfile *);
 132
 133 extern void cleanup_undefined_types (void);
 134
 135 extern struct type **dbx_lookup_type (int[2]);
 136
 137 extern long read_number (char **, int);
 138
 139 extern void add_undefined_type (struct type *);
 140
 141 extern struct symbol *define_symbol (CORE_ADDR, char *, int, int,
 142                                      struct objfile *);
 143
 144 extern void stabsread_init (void);
 145
 146 extern void stabsread_new_init (void);
 147
 148 extern void start_stabs (void);
 149
 150 extern void end_stabs (void);
 151
 152 extern void finish_global_stabs (struct objfile *objfile);
 153 \f
 154 /* COFF files can have multiple .stab sections, if they are linked
 155    using --split-by-reloc.  This linked list is used to pass the
 156    information into the functions in dbxread.c.  */
 157 struct stab_section_list
 158   {
 159     /* Next in list.  */
 160     struct stab_section_list *next;
 161
 162     /* Stab section.  */
 163     asection *section;
 164   };
 165 \f
 166 /* Functions exported by dbxread.c.  These are not in stabsread.c because
 167    they are only used by some stabs readers.  */
 168
 169 extern struct partial_symtab *end_psymtab (struct partial_symtab *pst,
 170                                            char **include_list,
 171                                            int num_includes,
 172                                            int capping_symbol_offset,
 173                                            CORE_ADDR capping_text,
 174                                            struct partial_symtab
 175                                            **dependency_list,
 176                                            int number_dependencies,
 177                                            int textlow_not_set);
 178
 179 extern void process_one_symbol (int, int, CORE_ADDR, char *,
 180                                 struct section_offsets *, struct objfile *);
 181
 182 extern void elfstab_build_psymtabs (struct objfile *objfile,
 183                                     int mainline,
 184                                     file_ptr staboff, unsigned int stabsize,
 185                                     file_ptr stabstroffset,
 186                                     unsigned int stabstrsize);
 187
 188 extern void coffstab_build_psymtabs
 189   (struct objfile *objfile,
 190    int mainline,
 191    CORE_ADDR textaddr, unsigned int textsize,
 192    struct stab_section_list *stabs,
 193    file_ptr stabstroffset, unsigned int stabstrsize);
 194
 195 extern void stabsect_build_psymtabs
 196   (struct objfile *objfile,
 197    int mainline, char *stab_name, char *stabstr_name, char *text_name);
 198
 199 extern void elfstab_offset_sections (struct objfile *,
 200                                      struct partial_symtab *);
 201
 202 extern void process_later
 203   (struct symbol *, char *,
 204    int (*f) (struct objfile *, struct symbol *, char *));
 205
 206 extern int symbol_reference_defined (char **);
 207
 208 extern void ref_add (int, struct symbol *, char *, CORE_ADDR);
 209
 210 extern struct symbol *ref_search (int);
 211
 212 extern int resolve_cfront_continuation
 213   (struct objfile *objfile, struct symbol *sym, char *p);
 214
 215 extern void free_header_files (void);
 216
 217 extern void init_header_files (void);
 218
 219 #undef EXTERN