1 /* Definitions for reading symbol files into GDB.
2 Copyright (C) 1990, 1991, 1992, 1993, 1994, 1996
3 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 #if !defined (SYMFILE_H)
24 /* This file requires that you first include "bfd.h". */
26 /* Partial symbols are stored in the psymbol_cache and pointers to them
27 are kept in a dynamically grown array that is obtained from malloc and
28 grown as necessary via realloc. Each objfile typically has two of these,
29 one for global symbols and one for static symbols. Although this adds
30 a level of indirection for storing or accessing the partial symbols,
31 it allows us to throw away duplicate psymbols and set all pointers
32 to the single saved instance. */
34 struct psymbol_allocation_list
{
36 /* Pointer to beginning of dynamically allocated array of pointers to
37 partial symbols. The array is dynamically expanded as necessary to
38 accommodate more pointers. */
40 struct partial_symbol
**list
;
42 /* Pointer to next available slot in which to store a pointer to a partial
45 struct partial_symbol
**next
;
47 /* Number of allocated pointer slots in current dynamic array (not the
48 number of bytes of storage). The "next" pointer will always point
49 somewhere between list[0] and list[size], and when at list[size] the
50 array will be expanded on the next attempt to store a pointer. */
55 /* Structure to keep track of symbol reading functions for various
60 /* BFD flavour that we handle, or (as a special kludge, see xcoffread.c,
61 (enum bfd_flavour)-1 for xcoff). */
63 enum bfd_flavour sym_flavour
;
65 /* Initializes anything that is global to the entire symbol table. It is
66 called during symbol_file_add, when we begin debugging an entirely new
69 void (*sym_new_init
) PARAMS ((struct objfile
*));
71 /* Reads any initial information from a symbol file, and initializes the
72 struct sym_fns SF in preparation for sym_read(). It is called every
73 time we read a symbol file for any reason. */
75 void (*sym_init
) PARAMS ((struct objfile
*));
77 /* sym_read (objfile, addr, mainline)
78 Reads a symbol file into a psymtab (or possibly a symtab).
79 OBJFILE is the objfile struct for the file we are reading.
81 are the offset between the file's specified section addresses and
82 their true addresses in memory.
83 MAINLINE is 1 if this is the
84 main symbol table being read, and 0 if a secondary
85 symbol file (e.g. shared library or dynamically loaded file)
88 void (*sym_read
) PARAMS ((struct objfile
*, struct section_offsets
*, int));
90 /* Called when we are finished with an objfile. Should do all cleanup
91 that is specific to the object file format for the particular objfile. */
93 void (*sym_finish
) PARAMS ((struct objfile
*));
95 /* This function produces a file-dependent section_offsets structure,
96 allocated in the objfile's storage, and based on the parameter.
97 The parameter is currently a CORE_ADDR (FIXME!) for backward compatibility
98 with the higher levels of GDB. It should probably be changed to
99 a string, where NULL means the default, and others are parsed in a file
100 dependent way. The result of this function is handed in to sym_read. */
102 struct section_offsets
*(*sym_offsets
) PARAMS ((struct objfile
*, CORE_ADDR
));
104 /* Finds the next struct sym_fns. They are allocated and initialized
105 in whatever module implements the functions pointed to; an
106 initializer calls add_symtab_fns to add them to the global chain. */
108 struct sym_fns
*next
;
112 /* The default version of sym_fns.sym_offsets for readers that don't
113 do anything special. */
115 extern struct section_offsets
*
116 default_symfile_offsets
PARAMS ((struct objfile
*objfile
, CORE_ADDR addr
));
120 extend_psymbol_list
PARAMS ((struct psymbol_allocation_list
*,
123 /* Add any kind of symbol to a psymbol_allocation_list. */
125 /* #include "demangle.h" */
128 add_psymbol_to_list
PARAMS ((char *, int, namespace_enum
, enum address_class
,
129 struct psymbol_allocation_list
*, long, CORE_ADDR
,
130 enum language
, struct objfile
*));
132 extern void init_psymbol_list
PARAMS ((struct objfile
*, int));
135 sort_pst_symbols
PARAMS ((struct partial_symtab
*));
137 extern struct symtab
*
138 allocate_symtab
PARAMS ((char *, struct objfile
*));
141 free_named_symtabs
PARAMS ((char *));
144 fill_in_vptr_fieldno
PARAMS ((struct type
*));
147 add_symtab_fns
PARAMS ((struct sym_fns
*));
150 init_entry_point_info
PARAMS ((struct objfile
*));
153 syms_from_objfile
PARAMS ((struct objfile
*, CORE_ADDR
, int, int));
156 new_symfile_objfile
PARAMS ((struct objfile
*, int, int));
158 extern struct partial_symtab
*
159 start_psymtab_common
PARAMS ((struct objfile
*, struct section_offsets
*,
161 struct partial_symbol
**,
162 struct partial_symbol
**));
164 /* Sorting your symbols for fast lookup or alphabetical printing. */
167 sort_block_syms
PARAMS ((struct block
*));
170 sort_symtab_syms
PARAMS ((struct symtab
*));
172 /* Make a copy of the string at PTR with SIZE characters in the symbol obstack
173 (and add a null character at the end in the copy).
174 Returns the address of the copy. */
177 obsavestring
PARAMS ((char *, int, struct obstack
*));
179 /* Concatenate strings S1, S2 and S3; return the new string.
180 Space is found in the symbol_obstack. */
183 obconcat
PARAMS ((struct obstack
*obstackp
, const char *, const char *,
188 /* whether to auto load solibs at startup time: 0/1. */
190 extern int auto_solib_add
;
194 extern struct partial_symtab
*
195 allocate_psymtab
PARAMS ((char *, struct objfile
*));
197 extern void find_lowest_section
PARAMS ((bfd
*, asection
*, PTR
));
199 /* Remote targets may wish to use this as their load function. */
200 extern void generic_load
PARAMS ((char *name
, int from_tty
));
202 /* From dwarfread.c */
205 dwarf_build_psymtabs
PARAMS ((struct objfile
*, struct section_offsets
*, int,
206 file_ptr
, unsigned int, file_ptr
, unsigned int));
208 /* From dwarf2read.c */
210 extern int dwarf2_has_info
PARAMS ((bfd
*abfd
));
212 extern void dwarf2_build_psymtabs
PARAMS ((struct objfile
*,
213 struct section_offsets
*,
215 /* From mdebugread.c */
217 /* Hack to force structures to exist before use in parameter list. */
218 struct ecoff_debug_hack
220 struct ecoff_debug_swap
*a
;
221 struct ecoff_debug_info
*b
;
224 mdebug_build_psymtabs
PARAMS ((struct objfile
*,
225 const struct ecoff_debug_swap
*,
226 struct ecoff_debug_info
*,
227 struct section_offsets
*));
230 elfmdebug_build_psymtabs
PARAMS ((struct objfile
*,
231 const struct ecoff_debug_swap
*,
233 struct section_offsets
*));
235 /* From demangle.c */
238 set_demangling_style
PARAMS ((char *));
240 #endif /* !defined(SYMFILE_H) */
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