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 (char *, struct objfile *);
  50 extern void common_block_end (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 *read_type (char **, struct objfile *);
 140
 141 extern void cleanup_undefined_types (void);
 142
 143 extern struct type **dbx_lookup_type (int[2]);
 144
 145 extern long read_number (char **, int);
 146
 147 extern void add_undefined_type (struct type *);
 148
 149 extern struct symbol *define_symbol (CORE_ADDR, char *, int, int,
 150                                      struct objfile *);
 151
 152 extern void stabsread_init (void);
 153
 154 extern void stabsread_new_init (void);
 155
 156 extern void start_stabs (void);
 157
 158 extern void end_stabs (void);
 159
 160 extern void finish_global_stabs (struct objfile *objfile);
 161 \f
 162
 163 EXTERN int os9k_stabs;
 164 \f
 165 /* COFF files can have multiple .stab sections, if they are linked
 166    using --split-by-reloc.  This linked list is used to pass the
 167    information into the functions in dbxread.c.  */
 168 struct stab_section_list
 169   {
 170     /* Next in list.  */
 171     struct stab_section_list *next;
 172
 173     /* Stab section.  */
 174     asection *section;
 175   };
 176 \f
 177 /* Functions exported by dbxread.c.  These are not in stabsread.c because
 178    they are only used by some stabs readers.  */
 179
 180 extern struct partial_symtab *end_psymtab (struct partial_symtab *pst,
 181                                            char **include_list,
 182                                            int num_includes,
 183                                            int capping_symbol_offset,
 184                                            CORE_ADDR capping_text,
 185                                            struct partial_symtab
 186                                            **dependency_list,
 187                                            int number_dependencies,
 188                                            int textlow_not_set);
 189
 190 extern void
 191 process_one_symbol (int, int, CORE_ADDR, char *,
 192                     struct section_offsets *, struct objfile *);
 193
 194 extern void elfstab_build_psymtabs
 195   (struct objfile *objfile,
 196    int mainline,
 197    file_ptr staboff, unsigned int stabsize,
 198    file_ptr stabstroffset, unsigned int stabstrsize);
 199
 200 extern void coffstab_build_psymtabs
 201   (struct objfile *objfile,
 202    int mainline,
 203    CORE_ADDR textaddr, unsigned int textsize,
 204    struct stab_section_list *stabs,
 205    file_ptr stabstroffset, unsigned int stabstrsize);
 206
 207 extern void stabsect_build_psymtabs
 208   (struct objfile *objfile,
 209    int mainline, char *stab_name, char *stabstr_name, char *text_name);
 210
 211 extern void elfstab_offset_sections (struct objfile *,
 212                                      struct partial_symtab *);
 213
 214 extern void process_later
 215   (struct symbol *, char *,
 216    int (*f) (struct objfile *, struct symbol *, char *));
 217
 218 extern int symbol_reference_defined (char **);
 219
 220 extern void ref_add (int, struct symbol *, char *, CORE_ADDR);
 221
 222 extern struct symbol *ref_search (int);
 223
 224 extern int resolve_cfront_continuation
 225   (struct objfile *objfile, struct symbol *sym, char *p);
 226
 227 #undef EXTERN