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
{
35 struct partial_symbol
**list
; /* Pointer to first partial symbol pointer*/
36 struct partial_symbol
**next
; /* Pointer to next avail storage for pointer */
37 int size
; /* Number of symbols */
40 /* Structure to keep track of symbol reading functions for various
45 /* BFD flavour that we handle, or (as a special kludge, see xcoffread.c,
46 (enum bfd_flavour)-1 for xcoff). */
48 enum bfd_flavour sym_flavour
;
50 /* Initializes anything that is global to the entire symbol table. It is
51 called during symbol_file_add, when we begin debugging an entirely new
54 void (*sym_new_init
) PARAMS ((struct objfile
*));
56 /* Reads any initial information from a symbol file, and initializes the
57 struct sym_fns SF in preparation for sym_read(). It is called every
58 time we read a symbol file for any reason. */
60 void (*sym_init
) PARAMS ((struct objfile
*));
62 /* sym_read (objfile, addr, mainline)
63 Reads a symbol file into a psymtab (or possibly a symtab).
64 OBJFILE is the objfile struct for the file we are reading.
66 are the offset between the file's specified section addresses and
67 their true addresses in memory.
68 MAINLINE is 1 if this is the
69 main symbol table being read, and 0 if a secondary
70 symbol file (e.g. shared library or dynamically loaded file)
73 void (*sym_read
) PARAMS ((struct objfile
*, struct section_offsets
*, int));
75 /* Called when we are finished with an objfile. Should do all cleanup
76 that is specific to the object file format for the particular objfile. */
78 void (*sym_finish
) PARAMS ((struct objfile
*));
80 /* This function produces a file-dependent section_offsets structure,
81 allocated in the objfile's storage, and based on the parameter.
82 The parameter is currently a CORE_ADDR (FIXME!) for backward compatibility
83 with the higher levels of GDB. It should probably be changed to
84 a string, where NULL means the default, and others are parsed in a file
85 dependent way. The result of this function is handed in to sym_read. */
87 struct section_offsets
*(*sym_offsets
) PARAMS ((struct objfile
*, CORE_ADDR
));
89 /* Finds the next struct sym_fns. They are allocated and initialized
90 in whatever module implements the functions pointed to; an
91 initializer calls add_symtab_fns to add them to the global chain. */
98 extend_psymbol_list
PARAMS ((struct psymbol_allocation_list
*,
101 /* Add any kind of symbol to a psymbol_allocation_list. */
103 #ifndef INLINE_ADD_PSYMBOL
104 /* Default this to off for now, and probably eventually remove support for inlining via
105 macros. Real world tests show no performance improvements by inlining, and the macros
106 just make debugging gdb more complicated and make gdb larger by up to 150 Kb. */
107 #define INLINE_ADD_PSYMBOL 0
110 #include "demangle.h"
112 #if !INLINE_ADD_PSYMBOL
114 /* Since one arg is a struct, we have to pass in a ptr and deref it (sigh) */
116 #define ADD_PSYMBOL_TO_LIST(name, namelength, namespace, class, list, value, language, objfile) \
117 add_psymbol_to_list (name, namelength, namespace, class, &list, value, language, objfile)
119 #define ADD_PSYMBOL_ADDR_TO_LIST(name, namelength, namespace, class, list, value, language, objfile) \
120 add_psymbol_addr_to_list (name, namelength, namespace, class, &list, value, language, objfile)
122 #else /* !INLINE_ADD_PSYMBOL */
124 #define ADD_PSYMBOL_VT_TO_LIST(NAME,NAMELENGTH,NAMESPACE,CLASS,LIST,VALUE,VT,LANGUAGE, OBJFILE) \
126 register struct partial_symbol *psym; \
127 char *buf = alloca ((NAMELENGTH) + 1); \
128 struct partial_symbol psymbol; \
129 memcpy (buf, (NAME), (NAMELENGTH)); \
130 buf[(NAMELENGTH)] = '\0'; \
131 SYMBOL_NAME (&psymbol) = bcache (buf, (NAMELENGTH) + 1, &(OBJFILE)->psymbol_cache); \
132 VT (&psymbol) = (VALUE); \
133 SYMBOL_SECTION (&psymbol) = 0; \
134 SYMBOL_LANGUAGE (&psymbol) = (LANGUAGE); \
135 PSYMBOL_NAMESPACE (&psymbol) = (NAMESPACE); \
136 PSYMBOL_CLASS (&psymbol) = (CLASS); \
137 SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, (LANGUAGE)); \
138 psym = bcache (&psymbol, sizeof (struct partial_symbol), &(OBJFILE)->psymbol_cache); \
139 if ((LIST).next >= (LIST).list + (LIST).size) \
140 extend_psymbol_list (&(LIST), (OBJFILE)); \
141 *(LIST).next++ = psym; \
142 OBJSTAT ((OBJFILE), n_psyms++); \
145 /* Add a symbol with an integer value to a psymtab. */
147 #define ADD_PSYMBOL_TO_LIST(name, namelength, namespace, class, list, value, language, objfile) \
148 ADD_PSYMBOL_VT_TO_LIST (name, namelength, namespace, class, list, value, SYMBOL_VALUE, language, objfile)
150 /* Add a symbol with a CORE_ADDR value to a psymtab. */
152 #define ADD_PSYMBOL_ADDR_TO_LIST(name, namelength, namespace, class, list, value, language, objfile)\
153 ADD_PSYMBOL_VT_TO_LIST (name, namelength, namespace, class, list, value, SYMBOL_VALUE_ADDRESS, language, objfile)
155 #endif /* INLINE_ADD_PSYMBOL */
157 extern void init_psymbol_list
PARAMS ((struct objfile
*, int));
160 sort_pst_symbols
PARAMS ((struct partial_symtab
*));
162 extern struct symtab
*
163 allocate_symtab
PARAMS ((char *, struct objfile
*));
166 free_named_symtabs
PARAMS ((char *));
169 fill_in_vptr_fieldno
PARAMS ((struct type
*));
172 add_symtab_fns
PARAMS ((struct sym_fns
*));
175 init_entry_point_info
PARAMS ((struct objfile
*));
178 syms_from_objfile
PARAMS ((struct objfile
*, CORE_ADDR
, int, int));
181 new_symfile_objfile
PARAMS ((struct objfile
*, int, int));
183 extern struct partial_symtab
*
184 start_psymtab_common
PARAMS ((struct objfile
*, struct section_offsets
*,
186 struct partial_symbol
**,
187 struct partial_symbol
**));
189 /* Sorting your symbols for fast lookup or alphabetical printing. */
192 sort_block_syms
PARAMS ((struct block
*));
195 sort_symtab_syms
PARAMS ((struct symtab
*));
197 /* Make a copy of the string at PTR with SIZE characters in the symbol obstack
198 (and add a null character at the end in the copy).
199 Returns the address of the copy. */
202 obsavestring
PARAMS ((char *, int, struct obstack
*));
204 /* Concatenate strings S1, S2 and S3; return the new string.
205 Space is found in the symbol_obstack. */
208 obconcat
PARAMS ((struct obstack
*obstackp
, const char *, const char *,
213 /* whether to auto load solibs at startup time: 0/1. */
215 extern int auto_solib_add
;
219 extern struct partial_symtab
*
220 allocate_psymtab
PARAMS ((char *, struct objfile
*));
222 /* Remote targets may wish to use this as their load function. */
223 extern void generic_load
PARAMS ((char *name
, int from_tty
));
225 /* From dwarfread.c */
228 dwarf_build_psymtabs
PARAMS ((struct objfile
*, struct section_offsets
*, int,
229 file_ptr
, unsigned int, file_ptr
, unsigned int));
231 /* From mdebugread.c */
233 /* Hack to force structures to exist before use in parameter list. */
234 struct ecoff_debug_hack
236 struct ecoff_debug_swap
*a
;
237 struct ecoff_debug_info
*b
;
240 mdebug_build_psymtabs
PARAMS ((struct objfile
*,
241 const struct ecoff_debug_swap
*,
242 struct ecoff_debug_info
*,
243 struct section_offsets
*));
246 elfmdebug_build_psymtabs
PARAMS ((struct objfile
*,
247 const struct ecoff_debug_swap
*,
249 struct section_offsets
*));
251 /* From demangle.c */
254 set_demangling_style
PARAMS ((char *));
256 #endif /* !defined(SYMFILE_H) */
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