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2ad5709f00
* Makefile.in (SFILES): Add bcache.c.
(symtab_h): Add bcache.h.
(HFILES_NO_SRCDIR): add bcache.h
(COMMON_OBJS): Add bcache.o
(bcache.o): New target.
* dbxread.c (start_psymtab): Make global_syms & static_syms
type "partial_symbol **".
* hpread.c (hpread_start_symtab): Ditto.
* os9kread.c (os9k_start_psymtab): Ditto.
* stabsread.h (start_psymtab): Ditto.
* {symfile.c, symfile.h} (start_psymtab_common): Ditto.
* maint.c (maintenance_print_statistics): Call
print_symbol_bcache_statistics.
* objfiles.c (allocate_objfile): Initialize psymbol bcache malloc
and free pointers.
* solib.c (allocate_rt_common_objfile): Ditto.
* symfile.c (reread_symbols): Ditto.
(free_objfile): Free psymbol bcache when objfile is freed.
(objfile_relocate): Use new indirect psymbol pointers.
* objfiles.h (struct objfile): Add psymbol cache.
* symfile.c (compare_psymbols): Now passed pointers to pointers to
psymbols.
(reread_symbols): Free psymbol bcache when freeing other objfile
resources.
(add_psymbol_to_list, add_psymbol_addr_to_list): Initialize new
psymbol using the psymbol bcache.
(init_psymbol_list): Psymbol lists now contain pointers rather than
the actual psymbols.
* symfile.h (psymbol_allocation_list): Psymbol lists now dynamically
grown arrays of pointers.
(ADD_PSYMBOL_VT_TO_LIST): Initialize new symbol using the psymbol
bcache.
* symmisc.c (print_partial_symbols): Now takes pointer to pointer
to partial symbol.
(print_symbol_bcache_statistics): New function to print per objfile
bcache statistics.
(print_partial_symbol, print_partial_symbols,
maintenance_check_symtabs, extend_psymbol_list):
Account for change to pointer to pointer to partial symbol.
* symtab.c (find_pc_psymbol, lookup_partial_symbol, decode_line_2,
make_symbol_completion_list):
Account for change to pointer to pointer to partial symbol.
* symtab.h (bcache.h): Include.
* xcoffread.c (xcoff_start_psymtab): Make global_syms & static_syms
type "partial_symbol **".
257 lines
8.9 KiB
C
257 lines
8.9 KiB
C
/* Definitions for reading symbol files into GDB.
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Copyright (C) 1990, 1991, 1992, 1993, 1994, 1996
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Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#if !defined (SYMFILE_H)
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#define SYMFILE_H
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/* This file requires that you first include "bfd.h". */
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/* Partial symbols are stored in the psymbol_cache and pointers to them
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are kept in a dynamically grown array that is obtained from malloc and
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grown as necessary via realloc. Each objfile typically has two of these,
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one for global symbols and one for static symbols. Although this adds
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a level of indirection for storing or accessing the partial symbols,
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it allows us to throw away duplicate psymbols and set all pointers
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to the single saved instance. */
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struct psymbol_allocation_list {
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struct partial_symbol **list; /* Pointer to first partial symbol pointer*/
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struct partial_symbol **next; /* Pointer to next avail storage for pointer */
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int size; /* Number of symbols */
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};
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/* Structure to keep track of symbol reading functions for various
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object file types. */
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struct sym_fns {
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/* BFD flavour that we handle, or (as a special kludge, see xcoffread.c,
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(enum bfd_flavour)-1 for xcoff). */
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enum bfd_flavour sym_flavour;
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/* Initializes anything that is global to the entire symbol table. It is
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called during symbol_file_add, when we begin debugging an entirely new
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program. */
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void (*sym_new_init) PARAMS ((struct objfile *));
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/* Reads any initial information from a symbol file, and initializes the
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struct sym_fns SF in preparation for sym_read(). It is called every
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time we read a symbol file for any reason. */
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void (*sym_init) PARAMS ((struct objfile *));
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/* sym_read (objfile, addr, mainline)
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Reads a symbol file into a psymtab (or possibly a symtab).
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OBJFILE is the objfile struct for the file we are reading.
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SECTION_OFFSETS
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are the offset between the file's specified section addresses and
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their true addresses in memory.
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MAINLINE is 1 if this is the
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main symbol table being read, and 0 if a secondary
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symbol file (e.g. shared library or dynamically loaded file)
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is being read. */
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void (*sym_read) PARAMS ((struct objfile *, struct section_offsets *, int));
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/* Called when we are finished with an objfile. Should do all cleanup
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that is specific to the object file format for the particular objfile. */
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void (*sym_finish) PARAMS ((struct objfile *));
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/* This function produces a file-dependent section_offsets structure,
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allocated in the objfile's storage, and based on the parameter.
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The parameter is currently a CORE_ADDR (FIXME!) for backward compatibility
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with the higher levels of GDB. It should probably be changed to
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a string, where NULL means the default, and others are parsed in a file
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dependent way. The result of this function is handed in to sym_read. */
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struct section_offsets *(*sym_offsets) PARAMS ((struct objfile *, CORE_ADDR));
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/* Finds the next struct sym_fns. They are allocated and initialized
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in whatever module implements the functions pointed to; an
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initializer calls add_symtab_fns to add them to the global chain. */
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struct sym_fns *next;
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};
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extern void
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extend_psymbol_list PARAMS ((struct psymbol_allocation_list *,
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struct objfile *));
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/* Add any kind of symbol to a psymbol_allocation_list. */
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#ifndef INLINE_ADD_PSYMBOL
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/* Default this to off for now, and probably eventually remove support for inlining via
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macros. Real world tests show no performance improvements by inlining, and the macros
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just make debugging gdb more complicated and make gdb larger by up to 150 Kb. */
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#define INLINE_ADD_PSYMBOL 0
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#endif
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#include "demangle.h"
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#if !INLINE_ADD_PSYMBOL
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/* Since one arg is a struct, we have to pass in a ptr and deref it (sigh) */
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#define ADD_PSYMBOL_TO_LIST(name, namelength, namespace, class, list, value, language, objfile) \
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add_psymbol_to_list (name, namelength, namespace, class, &list, value, language, objfile)
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#define ADD_PSYMBOL_ADDR_TO_LIST(name, namelength, namespace, class, list, value, language, objfile) \
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add_psymbol_addr_to_list (name, namelength, namespace, class, &list, value, language, objfile)
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#else /* !INLINE_ADD_PSYMBOL */
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#define ADD_PSYMBOL_VT_TO_LIST(NAME,NAMELENGTH,NAMESPACE,CLASS,LIST,VALUE,VT,LANGUAGE, OBJFILE) \
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do { \
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register struct partial_symbol *psym; \
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char *buf = alloca ((NAMELENGTH) + 1); \
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struct partial_symbol psymbol; \
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memcpy (buf, (NAME), (NAMELENGTH)); \
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buf[(NAMELENGTH)] = '\0'; \
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SYMBOL_NAME (&psymbol) = bcache (buf, (NAMELENGTH) + 1, &(OBJFILE)->psymbol_cache); \
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VT (&psymbol) = (VALUE); \
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SYMBOL_SECTION (&psymbol) = 0; \
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SYMBOL_LANGUAGE (&psymbol) = (LANGUAGE); \
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PSYMBOL_NAMESPACE (&psymbol) = (NAMESPACE); \
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PSYMBOL_CLASS (&psymbol) = (CLASS); \
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SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, (LANGUAGE)); \
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psym = bcache (&psymbol, sizeof (struct partial_symbol), &(OBJFILE)->psymbol_cache); \
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if ((LIST).next >= (LIST).list + (LIST).size) \
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extend_psymbol_list (&(LIST), (OBJFILE)); \
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*(LIST).next++ = psym; \
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OBJSTAT ((OBJFILE), n_psyms++); \
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} while (0)
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/* Add a symbol with an integer value to a psymtab. */
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#define ADD_PSYMBOL_TO_LIST(name, namelength, namespace, class, list, value, language, objfile) \
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ADD_PSYMBOL_VT_TO_LIST (name, namelength, namespace, class, list, value, SYMBOL_VALUE, language, objfile)
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/* Add a symbol with a CORE_ADDR value to a psymtab. */
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#define ADD_PSYMBOL_ADDR_TO_LIST(name, namelength, namespace, class, list, value, language, objfile)\
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ADD_PSYMBOL_VT_TO_LIST (name, namelength, namespace, class, list, value, SYMBOL_VALUE_ADDRESS, language, objfile)
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#endif /* INLINE_ADD_PSYMBOL */
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extern void init_psymbol_list PARAMS ((struct objfile *, int));
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extern void
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sort_pst_symbols PARAMS ((struct partial_symtab *));
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extern struct symtab *
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allocate_symtab PARAMS ((char *, struct objfile *));
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extern int
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free_named_symtabs PARAMS ((char *));
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extern void
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fill_in_vptr_fieldno PARAMS ((struct type *));
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extern void
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add_symtab_fns PARAMS ((struct sym_fns *));
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extern void
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init_entry_point_info PARAMS ((struct objfile *));
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extern void
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syms_from_objfile PARAMS ((struct objfile *, CORE_ADDR, int, int));
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extern void
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new_symfile_objfile PARAMS ((struct objfile *, int, int));
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extern struct partial_symtab *
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start_psymtab_common PARAMS ((struct objfile *, struct section_offsets *,
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char *, CORE_ADDR,
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struct partial_symbol **,
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struct partial_symbol **));
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/* Sorting your symbols for fast lookup or alphabetical printing. */
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extern void
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sort_block_syms PARAMS ((struct block *));
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extern void
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sort_symtab_syms PARAMS ((struct symtab *));
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/* Make a copy of the string at PTR with SIZE characters in the symbol obstack
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(and add a null character at the end in the copy).
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Returns the address of the copy. */
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extern char *
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obsavestring PARAMS ((char *, int, struct obstack *));
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/* Concatenate strings S1, S2 and S3; return the new string.
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Space is found in the symbol_obstack. */
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extern char *
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obconcat PARAMS ((struct obstack *obstackp, const char *, const char *,
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const char *));
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/* Variables */
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/* whether to auto load solibs at startup time: 0/1. */
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extern int auto_solib_add;
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/* From symfile.c */
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extern struct partial_symtab *
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allocate_psymtab PARAMS ((char *, struct objfile *));
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/* Remote targets may wish to use this as their load function. */
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extern void generic_load PARAMS ((char *name, int from_tty));
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/* From dwarfread.c */
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extern void
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dwarf_build_psymtabs PARAMS ((struct objfile *, struct section_offsets *, int,
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file_ptr, unsigned int, file_ptr, unsigned int));
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/* From mdebugread.c */
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/* Hack to force structures to exist before use in parameter list. */
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struct ecoff_debug_hack
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{
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struct ecoff_debug_swap *a;
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struct ecoff_debug_info *b;
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};
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extern void
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mdebug_build_psymtabs PARAMS ((struct objfile *,
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const struct ecoff_debug_swap *,
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struct ecoff_debug_info *,
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struct section_offsets *));
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extern void
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elfmdebug_build_psymtabs PARAMS ((struct objfile *,
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const struct ecoff_debug_swap *,
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asection *,
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struct section_offsets *));
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/* From demangle.c */
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extern void
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set_demangling_style PARAMS ((char *));
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#endif /* !defined(SYMFILE_H) */
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