gdb/stabsread.h

   1 /* Include file for stabs debugging format support functions.
   2    Copyright 1986-1991, 1992, 1993 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., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  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 produced
  90        different results when included.  It comes from the N_BINCL or N_EXCL. */
  91
  92     int instance;
  93
  94     /* Pointer to vector of types */
  95
  96     struct type **vector;
  97
  98     /* Allocated length (# elts) of that vector */
  99
 100     int length;
 101
 102   };
 103
 104 /* The table of header_files of this OBJFILE. */
 105 #define HEADER_FILES(OBJFILE) (DBX_SYMFILE_INFO (OBJFILE)->header_files)
 106
 107 /* The actual length of HEADER_FILES. */
 108 #define N_HEADER_FILES(OBJFILE) (DBX_SYMFILE_INFO (OBJFILE)->n_header_files)
 109
 110 /* The allocated lengh of HEADER_FILES. */
 111 #define N_ALLOCATED_HEADER_FILES(OBJFILE) \
 112   (DBX_SYMFILE_INFO (OBJFILE)->n_allocated_header_files)
 113
 114 /* Within each object file, various header files are assigned numbers.
 115    A type is defined or referred to with a pair of numbers
 116    (FILENUM,TYPENUM) where FILENUM is the number of the header file
 117    and TYPENUM is the number within that header file.
 118    TYPENUM is the index within the vector of types for that header file.
 119
 120    FILENUM == 0 is special; it refers to the main source of the object file,
 121    and not to any header file.  FILENUM != 1 is interpreted by looking it up
 122    in the following table, which contains indices in header_files.  */
 123
 124 EXTERN int *this_object_header_files;
 125
 126 EXTERN int n_this_object_header_files;
 127
 128 EXTERN int n_allocated_this_object_header_files;
 129
 130 extern struct complaint unknown_symtype_complaint;
 131 extern struct complaint unknown_symchar_complaint;
 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
 157 EXTERN int os9k_stabs;
 158 \f
 159 /* COFF files can have multiple .stab sections, if they are linked
 160    using --split-by-reloc.  This linked list is used to pass the
 161    information into the functions in dbxread.c.  */
 162 struct stab_section_list
 163   {
 164     /* Next in list.  */
 165     struct stab_section_list *next;
 166
 167     /* Stab section.  */
 168     asection *section;
 169   };
 170 \f
 171 /* Functions exported by dbxread.c.  These are not in stabsread.c because
 172    they are only used by some stabs readers.  */
 173
 174 extern struct partial_symtab *end_psymtab (struct partial_symtab *pst,
 175                                            char **include_list,
 176                                            int num_includes,
 177                                            int capping_symbol_offset,
 178                                            CORE_ADDR capping_text,
 179                                            struct partial_symtab
 180                                            **dependency_list,
 181                                            int number_dependencies,
 182                                            int textlow_not_set);
 183
 184 extern void
 185 process_one_symbol (int, int, CORE_ADDR, char *,
 186                     struct section_offsets *, struct objfile *);
 187
 188 extern void elfstab_build_psymtabs
 189   (struct objfile *objfile,
 190    int mainline,
 191    file_ptr staboff, unsigned int stabsize,
 192    file_ptr stabstroffset, unsigned int stabstrsize);
 193
 194 extern void coffstab_build_psymtabs
 195   (struct objfile *objfile,
 196    int mainline,
 197    CORE_ADDR textaddr, unsigned int textsize,
 198    struct stab_section_list *stabs,
 199    file_ptr stabstroffset, unsigned int stabstrsize);
 200
 201 extern void stabsect_build_psymtabs
 202   (struct objfile *objfile,
 203    int mainline, char *stab_name, char *stabstr_name, char *text_name);
 204
 205 extern void elfstab_offset_sections (struct objfile *,
 206                                      struct partial_symtab *);
 207
 208 extern void process_later
 209   (struct symbol *, char *,
 210    int (*f) (struct objfile *, struct symbol *, char *));
 211
 212 extern int symbol_reference_defined (char **);
 213
 214 extern void ref_add (int, struct symbol *, char *, CORE_ADDR);
 215
 216 extern struct symbol *ref_search (int);
 217
 218 extern int resolve_cfront_continuation
 219   (struct objfile *objfile, struct symbol *sym, char *p);
 220
 221 #undef EXTERN