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 /* Convert stab register number (from `r' declaration) to a gdb REGNUM.  */
  34
  35 #ifndef STAB_REG_TO_REGNUM
  36 #define STAB_REG_TO_REGNUM(VALUE) (VALUE)
  37 #endif
  38
  39 /* Hash table of global symbols whose values are not known yet.
  40    They are chained thru the SYMBOL_VALUE_CHAIN, since we don't
  41    have the correct data for that slot yet.
  42
  43    The use of the LOC_BLOCK code in this chain is nonstandard--
  44    it refers to a FORTRAN common block rather than the usual meaning, and
  45    the such LOC_BLOCK symbols use their fields in nonstandard ways.  */
  46
  47 EXTERN struct symbol *global_sym_chain[HASHSIZE];
  48
  49 extern void common_block_start PARAMS ((char *, struct objfile *));
  50 extern void common_block_end PARAMS ((struct objfile *));
  51
  52 /* Kludge for xcoffread.c */
  53
  54 struct pending_stabs
  55   {
  56     int count;
  57     int length;
  58     char *stab[1];
  59   };
  60
  61 EXTERN struct pending_stabs *global_stabs;
  62
  63 /* The type code that process_one_symbol saw on its previous invocation.
  64    Used to detect pairs of N_SO symbols. */
  65
  66 EXTERN int previous_stab_code;
  67 \f
  68 /* Support for Sun changes to dbx symbol format */
  69
  70 /* For each identified header file, we have a table of types defined
  71    in that header file.
  72
  73    header_files maps header file names to their type tables.
  74    It is a vector of n_header_files elements.
  75    Each element describes one header file.
  76    It contains a vector of types.
  77
  78    Sometimes it can happen that the same header file produces
  79    different results when included in different places.
  80    This can result from conditionals or from different
  81    things done before including the file.
  82    When this happens, there are multiple entries for the file in this table,
  83    one entry for each distinct set of results.
  84    The entries are distinguished by the INSTANCE field.
  85    The INSTANCE field appears in the N_BINCL and N_EXCL symbol table and is
  86    used to match header-file references to their corresponding data.  */
  87
  88 struct header_file
  89   {
  90
  91     /* Name of header file */
  92
  93     char *name;
  94
  95     /* Numeric code distinguishing instances of one header file that produced
  96        different results when included.  It comes from the N_BINCL or N_EXCL. */
  97
  98     int instance;
  99
 100     /* Pointer to vector of types */
 101
 102     struct type **vector;
 103
 104     /* Allocated length (# elts) of that vector */
 105
 106     int length;
 107
 108   };
 109
 110 /* The table of header_files of this OBJFILE. */
 111 #define HEADER_FILES(OBJFILE) (DBX_SYMFILE_INFO (OBJFILE)->header_files)
 112
 113 /* The actual length of HEADER_FILES. */
 114 #define N_HEADER_FILES(OBJFILE) (DBX_SYMFILE_INFO (OBJFILE)->n_header_files)
 115
 116 /* The allocated lengh of HEADER_FILES. */
 117 #define N_ALLOCATED_HEADER_FILES(OBJFILE) \
 118   (DBX_SYMFILE_INFO (OBJFILE)->n_allocated_header_files)
 119
 120 /* Within each object file, various header files are assigned numbers.
 121    A type is defined or referred to with a pair of numbers
 122    (FILENUM,TYPENUM) where FILENUM is the number of the header file
 123    and TYPENUM is the number within that header file.
 124    TYPENUM is the index within the vector of types for that header file.
 125
 126    FILENUM == 0 is special; it refers to the main source of the object file,
 127    and not to any header file.  FILENUM != 1 is interpreted by looking it up
 128    in the following table, which contains indices in header_files.  */
 129
 130 EXTERN int *this_object_header_files;
 131
 132 EXTERN int n_this_object_header_files;
 133
 134 EXTERN int n_allocated_this_object_header_files;
 135
 136 extern struct complaint unknown_symtype_complaint;
 137 extern struct complaint unknown_symchar_complaint;
 138
 139 extern struct type *
 140   read_type PARAMS ((char **, struct objfile *));
 141
 142 extern void
 143 cleanup_undefined_types PARAMS ((void));
 144
 145 extern struct type **
 146   dbx_lookup_type PARAMS ((int[2]));
 147
 148 extern long
 149 read_number PARAMS ((char **, int));
 150
 151 extern void
 152 add_undefined_type PARAMS ((struct type *));
 153
 154 extern struct symbol *
 155   define_symbol PARAMS ((CORE_ADDR, char *, int, int, struct objfile *));
 156
 157 extern void
 158 stabsread_init PARAMS ((void));
 159
 160 extern void
 161 stabsread_new_init PARAMS ((void));
 162
 163 extern void
 164 start_stabs PARAMS ((void));
 165
 166 extern void
 167 end_stabs PARAMS ((void));
 168
 169 extern void
 170 finish_global_stabs PARAMS ((struct objfile * objfile));
 171 \f
 172
 173 EXTERN int os9k_stabs;
 174 \f
 175 /* COFF files can have multiple .stab sections, if they are linked
 176    using --split-by-reloc.  This linked list is used to pass the
 177    information into the functions in dbxread.c.  */
 178 struct stab_section_list
 179   {
 180     /* Next in list.  */
 181     struct stab_section_list *next;
 182
 183     /* Stab section.  */
 184     asection *section;
 185   };
 186 \f
 187 /* Functions exported by dbxread.c.  These are not in stabsread.c because
 188    they are only used by some stabs readers.  */
 189
 190 extern struct partial_symtab *
 191   end_psymtab PARAMS ((struct partial_symtab * pst,
 192                        char **include_list,
 193                        int num_includes,
 194                        int capping_symbol_offset,
 195                        CORE_ADDR capping_text,
 196                        struct partial_symtab ** dependency_list,
 197                        int number_dependencies,
 198                        int textlow_not_set));
 199
 200 extern void
 201 process_one_symbol PARAMS ((int, int, CORE_ADDR, char *,
 202                             struct section_offsets *, struct objfile *));
 203
 204 extern void elfstab_build_psymtabs
 205   PARAMS ((struct objfile * objfile,
 206            int mainline,
 207            file_ptr staboff, unsigned int stabsize,
 208            file_ptr stabstroffset,
 209            unsigned int stabstrsize));
 210
 211 extern void coffstab_build_psymtabs
 212   PARAMS ((struct objfile * objfile,
 213            int mainline,
 214            CORE_ADDR textaddr, unsigned int textsize,
 215            struct stab_section_list * stabs,
 216            file_ptr stabstroffset,
 217            unsigned int stabstrsize));
 218
 219 extern void stabsect_build_psymtabs
 220   PARAMS ((struct objfile * objfile,
 221            int mainline,
 222            char *stab_name,
 223            char *stabstr_name,
 224            char *text_name));
 225
 226 extern void elfstab_offset_sections PARAMS ((struct objfile *,
 227                                              struct partial_symtab *));
 228
 229 extern void process_later
 230   PARAMS ((struct symbol *, char *,
 231            int (*f) PARAMS ((struct objfile *, struct symbol *, char *))));
 232
 233 extern int symbol_reference_defined PARAMS ((char **));
 234
 235 extern void ref_add PARAMS ((int, struct symbol *, char *, CORE_ADDR));
 236
 237 extern struct symbol *ref_search PARAMS ((int));
 238
 239 extern int resolve_cfront_continuation
 240   PARAMS ((struct objfile * objfile, struct symbol * sym, char *p));
 241
 242 #undef EXTERN