1/* Include file for stabs debugging format support functions.
2   Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
3   1996, 1997, 1999, 2000, 2001, 2002, 2003, 2007, 2008, 2009, 2010, 2011
4   Free Software Foundation, Inc.
5
6   This file is part of GDB.
7
8   This program is free software; you can redistribute it and/or modify
9   it under the terms of the GNU General Public License as published by
10   the Free Software Foundation; either version 3 of the License, or
11   (at your option) any later version.
12
13   This program is distributed in the hope that it will be useful,
14   but WITHOUT ANY WARRANTY; without even the implied warranty of
15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16   GNU General Public License for more details.
17
18   You should have received a copy of the GNU General Public License
19   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
20
21struct objfile;
22
23/* Definitions, prototypes, etc for stabs debugging format support
24   functions.
25
26   Variables declared in this file can be defined by #define-ing
27   the name EXTERN to null.  It is used to declare variables that
28   are normally extern, but which get defined in a single module
29   using this technique.  */
30
31#ifndef EXTERN
32#define	EXTERN extern
33#endif
34
35/* Hash table of global symbols whose values are not known yet.
36   They are chained thru the SYMBOL_VALUE_CHAIN, since we don't
37   have the correct data for that slot yet.
38
39   The use of the LOC_BLOCK code in this chain is nonstandard--
40   it refers to a FORTRAN common block rather than the usual meaning, and
41   the such LOC_BLOCK symbols use their fields in nonstandard ways.  */
42
43EXTERN struct symbol *global_sym_chain[HASHSIZE];
44
45extern void common_block_start (char *, struct objfile *);
46extern void common_block_end (struct objfile *);
47
48/* Kludge for xcoffread.c */
49
50struct pending_stabs
51  {
52    int count;
53    int length;
54    char *stab[1];
55  };
56
57EXTERN struct pending_stabs *global_stabs;
58
59/* The type code that process_one_symbol saw on its previous invocation.
60   Used to detect pairs of N_SO symbols.  */
61
62EXTERN int previous_stab_code;
63
64/* Support for Sun changes to dbx symbol format.  */
65
66/* For each identified header file, we have a table of types defined
67   in that header file.
68
69   header_files maps header file names to their type tables.
70   It is a vector of n_header_files elements.
71   Each element describes one header file.
72   It contains a vector of types.
73
74   Sometimes it can happen that the same header file produces
75   different results when included in different places.
76   This can result from conditionals or from different
77   things done before including the file.
78   When this happens, there are multiple entries for the file in this table,
79   one entry for each distinct set of results.
80   The entries are distinguished by the INSTANCE field.
81   The INSTANCE field appears in the N_BINCL and N_EXCL symbol table and is
82   used to match header-file references to their corresponding data.  */
83
84struct header_file
85  {
86
87    /* Name of header file */
88
89    char *name;
90
91    /* Numeric code distinguishing instances of one header file that
92       produced different results when included.  It comes from the
93       N_BINCL or N_EXCL.  */
94
95    int instance;
96
97    /* Pointer to vector of types */
98
99    struct type **vector;
100
101    /* Allocated length (# elts) of that vector */
102
103    int length;
104
105  };
106
107/* The table of header_files of this OBJFILE.  */
108#define HEADER_FILES(OBJFILE) (DBX_SYMFILE_INFO (OBJFILE)->header_files)
109
110/* The actual length of HEADER_FILES.  */
111#define N_HEADER_FILES(OBJFILE) (DBX_SYMFILE_INFO (OBJFILE)->n_header_files)
112
113/* The allocated lengh of HEADER_FILES.  */
114#define N_ALLOCATED_HEADER_FILES(OBJFILE) \
115  (DBX_SYMFILE_INFO (OBJFILE)->n_allocated_header_files)
116
117/* Within each object file, various header files are assigned numbers.
118   A type is defined or referred to with a pair of numbers
119   (FILENUM,TYPENUM) where FILENUM is the number of the header file
120   and TYPENUM is the number within that header file.
121   TYPENUM is the index within the vector of types for that header file.
122
123   FILENUM == 0 is special; it refers to the main source of the object file,
124   and not to any header file.  FILENUM != 1 is interpreted by looking it up
125   in the following table, which contains indices in header_files.  */
126
127EXTERN int *this_object_header_files;
128
129EXTERN int n_this_object_header_files;
130
131EXTERN int n_allocated_this_object_header_files;
132
133extern void cleanup_undefined_types (struct objfile *);
134
135extern long read_number (char **, int);
136
137extern struct symbol *define_symbol (CORE_ADDR, char *, int, int,
138				     struct objfile *);
139
140extern void stabsread_init (void);
141
142extern void stabsread_new_init (void);
143
144extern void start_stabs (void);
145
146extern void end_stabs (void);
147
148extern void finish_global_stabs (struct objfile *objfile);
149
150/* COFF files can have multiple .stab sections, if they are linked
151   using --split-by-reloc.  This linked list is used to pass the
152   information into the functions in dbxread.c.  */
153struct stab_section_list
154  {
155    /* Next in list.  */
156    struct stab_section_list *next;
157
158    /* Stab section.  */
159    asection *section;
160  };
161
162/* Functions exported by dbxread.c.  These are not in stabsread.c because
163   they are only used by some stabs readers.  */
164
165extern struct partial_symtab *end_psymtab (struct partial_symtab *pst,
166					   char **include_list,
167					   int num_includes,
168					   int capping_symbol_offset,
169					   CORE_ADDR capping_text,
170					   struct partial_symtab
171					   **dependency_list,
172					   int number_dependencies,
173					   int textlow_not_set);
174
175extern void process_one_symbol (int, int, CORE_ADDR, char *,
176				struct section_offsets *, struct objfile *);
177
178extern void elfstab_build_psymtabs (struct objfile *objfile,
179				    asection *stabsect,
180				    file_ptr stabstroffset,
181				    unsigned int stabstrsize);
182
183extern void coffstab_build_psymtabs
184  (struct objfile *objfile,
185   CORE_ADDR textaddr, unsigned int textsize,
186   struct stab_section_list *stabs,
187   file_ptr stabstroffset, unsigned int stabstrsize);
188
189extern void stabsect_build_psymtabs (struct objfile *objfile, char *stab_name,
190				     char *stabstr_name, char *text_name);
191
192extern void elfstab_offset_sections (struct objfile *,
193				     struct partial_symtab *);
194extern int symbol_reference_defined (char **);
195
196extern void ref_add (int, struct symbol *, char *, CORE_ADDR);
197
198extern struct symbol *ref_search (int);
199
200extern void free_header_files (void);
201
202extern void init_header_files (void);
203
204#undef EXTERN
205