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, Boston, MA 02111-1307, USA.  */
  19
  20 /* Definitions, prototypes, etc for stabs debugging format support
  21    functions.
  22
  23    Variables declared in this file can be defined by #define-ing
  24    the name EXTERN to null.  It is used to declare variables that
  25    are normally extern, but which get defined in a single module
  26    using this technique.  */
  27
  28 #ifndef EXTERN
  29 #define EXTERN extern
  30 #endif
  31
  32 /* Convert stab register number (from `r' declaration) to a gdb REGNUM.  */
  33
  34 #ifndef STAB_REG_TO_REGNUM
  35 #define STAB_REG_TO_REGNUM(VALUE) (VALUE)
  36 #endif
  37
  38 /* Hash table of global symbols whose values are not known yet.
  39    They are chained thru the SYMBOL_VALUE_CHAIN, since we don't
  40    have the correct data for that slot yet.
  41
  42    The use of the LOC_BLOCK code in this chain is nonstandard--
  43    it refers to a FORTRAN common block rather than the usual meaning, and
  44    the such LOC_BLOCK symbols use their fields in nonstandard ways.  */
  45
  46 EXTERN struct symbol *global_sym_chain[HASHSIZE];
  47
  48 extern void common_block_start PARAMS ((char *, struct objfile *));
  49 extern void common_block_end PARAMS ((struct objfile *));
  50
  51 /* Kludge for xcoffread.c */
  52
  53 struct pending_stabs
  54 {
  55   int count;
  56   int length;
  57   char *stab[1];
  58 };
  59
  60 EXTERN struct pending_stabs *global_stabs;
  61
  62 /* The type code that process_one_symbol saw on its previous invocation.
  63    Used to detect pairs of N_SO symbols. */
  64
  65 EXTERN int previous_stab_code;
  66 \f
  67 /* Support for Sun changes to dbx symbol format */
  68
  69 /* For each identified header file, we have a table of types defined
  70    in that header file.
  71
  72    header_files maps header file names to their type tables.
  73    It is a vector of n_header_files elements.
  74    Each element describes one header file.
  75    It contains a vector of types.
  76
  77    Sometimes it can happen that the same header file produces
  78    different results when included in different places.
  79    This can result from conditionals or from different
  80    things done before including the file.
  81    When this happens, there are multiple entries for the file in this table,
  82    one entry for each distinct set of results.
  83    The entries are distinguished by the INSTANCE field.
  84    The INSTANCE field appears in the N_BINCL and N_EXCL symbol table and is
  85    used to match header-file references to their corresponding data.  */
  86
  87 struct header_file
  88 {
  89
  90   /* Name of header file */
  91
  92   char *name;
  93
  94   /* Numeric code distinguishing instances of one header file that produced
  95      different results when included.  It comes from the N_BINCL or N_EXCL. */
  96
  97   int instance;
  98
  99   /* Pointer to vector of types */
 100
 101   struct type **vector;
 102
 103   /* Allocated length (# elts) of that vector */
 104
 105   int length;
 106
 107 };
 108
 109 EXTERN struct header_file *header_files;
 110
 111 EXTERN int n_header_files;
 112
 113 EXTERN int 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 == 1 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 complaint unknown_symtype_complaint;
 132 extern struct complaint unknown_symchar_complaint;
 133
 134 extern struct type *
 135 read_type PARAMS ((char **, struct objfile *));
 136
 137 extern void
 138 cleanup_undefined_types PARAMS ((void));
 139
 140 extern struct type **
 141 dbx_lookup_type PARAMS ((int [2]));
 142
 143 extern long
 144 read_number PARAMS ((char **, int));
 145
 146 extern void
 147 add_undefined_type PARAMS ((struct type *));
 148
 149 extern struct symbol *
 150 define_symbol PARAMS ((CORE_ADDR, char *, int, int, struct objfile *));
 151
 152 extern void
 153 stabsread_init PARAMS ((void));
 154
 155 extern void
 156 stabsread_new_init PARAMS ((void));
 157
 158 extern void
 159 start_stabs PARAMS ((void));
 160
 161 extern void
 162 end_stabs PARAMS ((void));
 163
 164 extern void
 165 finish_global_stabs PARAMS ((struct objfile *objfile));
 166 \f
 167 EXTERN int os9k_stabs;
 168 \f
 169 /* COFF files can have multiple .stab sections, if they are linked
 170    using --split-by-reloc.  This linked list is used to pass the
 171    information into the functions in dbxread.c.  */
 172 struct stab_section_list
 173 {
 174   /* Next in list.  */
 175   struct stab_section_list *next;
 176
 177   /* Stab section.  */
 178   asection *section;
 179 };
 180 \f
 181 /* Functions exported by dbxread.c.  These are not in stabsread.c because
 182    they are only used by some stabs readers.  */
 183
 184 extern struct partial_symtab *
 185 start_psymtab PARAMS ((struct objfile *, struct section_offsets *, char *,
 186                        CORE_ADDR, int, struct partial_symbol *,
 187                        struct partial_symbol *));
 188
 189 extern struct partial_symtab *
 190 end_psymtab PARAMS ((struct partial_symtab *, char **, int, int, CORE_ADDR,
 191                      struct partial_symtab **, int));
 192
 193 extern void
 194 process_one_symbol PARAMS ((int, int, CORE_ADDR, char *,
 195                             struct section_offsets *, struct objfile *));
 196
 197 extern void elfstab_build_psymtabs
 198   PARAMS ((struct objfile *objfile,
 199            struct section_offsets *section_offsets,
 200            int mainline,
 201            file_ptr staboff, unsigned int stabsize,
 202            file_ptr stabstroffset,
 203            unsigned int stabstrsize));
 204
 205 extern void coffstab_build_psymtabs
 206   PARAMS ((struct objfile *objfile,
 207            struct section_offsets *section_offsets,
 208            int mainline,
 209            CORE_ADDR textaddr, unsigned int textsize,
 210            struct stab_section_list *stabs,
 211            file_ptr stabstroffset,
 212            unsigned int stabstrsize));
 213
 214 extern void stabsect_build_psymtabs
 215   PARAMS ((struct objfile *objfile,
 216            struct section_offsets *section_offsets,
 217            int mainline,
 218            char *stab_name,
 219            char *stabstr_name,
 220            char *text_name));
 221
 222 extern void elfstab_offset_sections PARAMS ((struct objfile *,
 223                                              struct partial_symtab *));
 224
 225 #undef EXTERN