gdb/stabsread.h

   1 /* Include file for stabs debugging format support functions.
   2    Copyright (C) 1986-2016 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 3 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, see <http://www.gnu.org/licenses/>.  */
  18
  19 struct objfile;
  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
  90        produced different results when included.  It comes from the
  91        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 void cleanup_undefined_stabs_types (struct objfile *);
 132
 133 extern long read_number (char **, int);
 134
 135 extern struct symbol *define_symbol (CORE_ADDR, char *, int, int,
 136                                      struct objfile *);
 137
 138 extern void stabsread_init (void);
 139
 140 extern void stabsread_new_init (void);
 141
 142 extern void start_stabs (void);
 143
 144 extern void end_stabs (void);
 145
 146 extern void finish_global_stabs (struct objfile *objfile);
 147 \f
 148 /* COFF files can have multiple .stab sections, if they are linked
 149    using --split-by-reloc.  This linked list is used to pass the
 150    information into the functions in dbxread.c.  */
 151 struct stab_section_list
 152   {
 153     /* Next in list.  */
 154     struct stab_section_list *next;
 155
 156     /* Stab section.  */
 157     asection *section;
 158   };
 159 \f
 160 /* Functions exported by dbxread.c.  These are not in stabsread.c because
 161    they are only used by some stabs readers.  */
 162
 163 extern struct partial_symtab *dbx_end_psymtab
 164   (struct objfile *objfile, struct partial_symtab *pst,
 165    const char **include_list, int num_includes,
 166    int capping_symbol_offset, CORE_ADDR capping_text,
 167    struct partial_symtab **dependency_list, int number_dependencies,
 168    int textlow_not_set);
 169
 170 extern void process_one_symbol (int, int, CORE_ADDR, char *,
 171                                 const struct section_offsets *,
 172                                 struct objfile *);
 173
 174 extern void elfstab_build_psymtabs (struct objfile *objfile,
 175                                     asection *stabsect,
 176                                     file_ptr stabstroffset,
 177                                     unsigned int stabstrsize);
 178
 179 extern void coffstab_build_psymtabs
 180   (struct objfile *objfile,
 181    CORE_ADDR textaddr, unsigned int textsize,
 182    struct stab_section_list *stabs,
 183    file_ptr stabstroffset, unsigned int stabstrsize);
 184
 185 extern void stabsect_build_psymtabs (struct objfile *objfile, char *stab_name,
 186                                      char *stabstr_name, char *text_name);
 187
 188 extern int symbol_reference_defined (char **);
 189
 190 extern void ref_add (int, struct symbol *, char *, CORE_ADDR);
 191
 192 extern struct symbol *ref_search (int);
 193
 194 extern void free_header_files (void);
 195
 196 extern void init_header_files (void);
 197
 198 #undef EXTERN