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40658b9446
This is a clean-up of some of our symbol-lookup machinery to pull some
kludgy Ada-specific definitions out of psymtab.c. In place of
map_ada_symtabs and ada_lookup_partial_symbol, we have a method
map_matching_symbols, which searches through all symbol tables and
partial symbol tables looking for a symbol that matches according to
a matching function that is passed as a parameter. This requires some
care, because partial symbol tables speed up searches by binary search,
while full symbol tables use hashing. To call map_matching_symbols, therefore,
you may need to supply both a matching function that is compatible with the
dictionary hash function and an ordering relation that is compatible with
strcmp_iw, which is used to order partial symbol tables.
Having added this general routine to psymtab.c, we use it in ada-lang.c
to rework add_non_local_symbols (now renamed add_nonlocal_symbols).
Changelog:
gdb/
* ada-lang.c (full_match): Declare.
(ada_match_name): Rename to match_name (we should avoid prefixing static
symbols with "ada_").
(match_name): New name for ada_match_name.
(struct ada_psym_data): Remove and replace with...
(struct match_data): User data for map_matching_symbols.
(ada_add_psyms): Remove.
(aux_add_nonlocal_symbols): New function, used as callback for
map_matching_symbols.
(compare_names): Ordering function adopted from strcmp_iw for Ada-encoded
symbols.
(ada_add_non_local_symbols): Rename to add_nonlocal_symbols.
(add_nonlocal_symbols): Renamed from ada_add_non_local_symbols.
Rework to use map_matching_symbols instead of map_ada_symtabs.
(ada_lookup_symbol_list): Use add_nonlocal_symbols.
* psymtab.c: Include dependency on dictionary.h.
(match_partial_symbol): New function.
(ada_lookup_partial_symbol): Remove.
(map_block): New function, auxiliary to map_matching_symbols_psymtab.
(map_matching_symbols_psymtab): New function.
(psym_functions): Replace map_ada_symtabs with map_matching_symbols_psymtab.
* symfile.h: Replace map_ada_symtabs definition with map_matching_symbols.
1837 lines
51 KiB
C
1837 lines
51 KiB
C
/* Partial symbol tables.
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Copyright (C) 2009, 2010 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 3 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, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "symtab.h"
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#include "psympriv.h"
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#include "objfiles.h"
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#include "gdb_assert.h"
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#include "block.h"
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#include "filenames.h"
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#include "source.h"
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#include "addrmap.h"
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#include "gdbtypes.h"
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#include "bcache.h"
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#include "ui-out.h"
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#include "command.h"
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#include "readline/readline.h"
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#include "gdb_regex.h"
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#include "dictionary.h"
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#ifndef DEV_TTY
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#define DEV_TTY "/dev/tty"
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#endif
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struct psymbol_bcache
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{
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struct bcache *bcache;
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};
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/* A fast way to get from a psymtab to its symtab (after the first time). */
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#define PSYMTAB_TO_SYMTAB(pst) \
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((pst) -> symtab != NULL ? (pst) -> symtab : psymtab_to_symtab (pst))
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static struct partial_symbol *match_partial_symbol (struct partial_symtab *,
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int,
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const char *, domain_enum,
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int (*) (const char *,
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const char *),
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int (*) (const char *,
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const char *));
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static struct partial_symbol *lookup_partial_symbol (struct partial_symtab *,
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const char *, int,
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domain_enum);
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static char *psymtab_to_fullname (struct partial_symtab *ps);
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static struct partial_symbol *find_pc_sect_psymbol (struct partial_symtab *,
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CORE_ADDR,
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struct obj_section *);
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static struct partial_symbol *fixup_psymbol_section (struct partial_symbol
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*psym,
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struct objfile *objfile);
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static struct symtab *psymtab_to_symtab (struct partial_symtab *pst);
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/* Lookup the partial symbol table of a source file named NAME.
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*If* there is no '/' in the name, a match after a '/'
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in the psymtab filename will also work. */
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static struct partial_symtab *
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lookup_partial_symtab (struct objfile *objfile, const char *name,
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const char *full_path, const char *real_path)
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{
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struct partial_symtab *pst;
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ALL_OBJFILE_PSYMTABS (objfile, pst)
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{
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if (FILENAME_CMP (name, pst->filename) == 0)
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{
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return (pst);
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}
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/* If the user gave us an absolute path, try to find the file in
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this symtab and use its absolute path. */
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if (full_path != NULL)
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{
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psymtab_to_fullname (pst);
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if (pst->fullname != NULL
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&& FILENAME_CMP (full_path, pst->fullname) == 0)
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{
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return pst;
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}
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}
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if (real_path != NULL)
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{
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char *rp = NULL;
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psymtab_to_fullname (pst);
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if (pst->fullname != NULL)
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{
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rp = gdb_realpath (pst->fullname);
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make_cleanup (xfree, rp);
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}
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if (rp != NULL && FILENAME_CMP (real_path, rp) == 0)
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{
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return pst;
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}
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}
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}
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/* Now, search for a matching tail (only if name doesn't have any dirs) */
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if (lbasename (name) == name)
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ALL_OBJFILE_PSYMTABS (objfile, pst)
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{
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if (FILENAME_CMP (lbasename (pst->filename), name) == 0)
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return (pst);
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}
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return (NULL);
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}
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static int
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lookup_symtab_via_partial_symtab (struct objfile *objfile, const char *name,
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const char *full_path, const char *real_path,
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struct symtab **result)
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{
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struct partial_symtab *ps;
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ps = lookup_partial_symtab (objfile, name, full_path, real_path);
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if (!ps)
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return 0;
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if (ps->readin)
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error (_("Internal: readin %s pst for `%s' found when no symtab found."),
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ps->filename, name);
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*result = PSYMTAB_TO_SYMTAB (ps);
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return 1;
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}
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/* Find which partial symtab contains PC and SECTION starting at psymtab PST.
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We may find a different psymtab than PST. See FIND_PC_SECT_PSYMTAB. */
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static struct partial_symtab *
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find_pc_sect_psymtab_closer (CORE_ADDR pc, struct obj_section *section,
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struct partial_symtab *pst,
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struct minimal_symbol *msymbol)
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{
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struct objfile *objfile = pst->objfile;
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struct partial_symtab *tpst;
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struct partial_symtab *best_pst = pst;
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CORE_ADDR best_addr = pst->textlow;
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/* An objfile that has its functions reordered might have
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many partial symbol tables containing the PC, but
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we want the partial symbol table that contains the
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function containing the PC. */
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if (!(objfile->flags & OBJF_REORDERED) &&
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section == 0) /* can't validate section this way */
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return pst;
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if (msymbol == NULL)
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return (pst);
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/* The code range of partial symtabs sometimes overlap, so, in
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the loop below, we need to check all partial symtabs and
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find the one that fits better for the given PC address. We
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select the partial symtab that contains a symbol whose
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address is closest to the PC address. By closest we mean
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that find_pc_sect_symbol returns the symbol with address
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that is closest and still less than the given PC. */
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for (tpst = pst; tpst != NULL; tpst = tpst->next)
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{
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if (pc >= tpst->textlow && pc < tpst->texthigh)
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{
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struct partial_symbol *p;
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CORE_ADDR this_addr;
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/* NOTE: This assumes that every psymbol has a
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corresponding msymbol, which is not necessarily
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true; the debug info might be much richer than the
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object's symbol table. */
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p = find_pc_sect_psymbol (tpst, pc, section);
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if (p != NULL
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&& SYMBOL_VALUE_ADDRESS (p)
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== SYMBOL_VALUE_ADDRESS (msymbol))
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return tpst;
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/* Also accept the textlow value of a psymtab as a
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"symbol", to provide some support for partial
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symbol tables with line information but no debug
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symbols (e.g. those produced by an assembler). */
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if (p != NULL)
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this_addr = SYMBOL_VALUE_ADDRESS (p);
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else
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this_addr = tpst->textlow;
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/* Check whether it is closer than our current
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BEST_ADDR. Since this symbol address is
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necessarily lower or equal to PC, the symbol closer
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to PC is the symbol which address is the highest.
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This way we return the psymtab which contains such
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best match symbol. This can help in cases where the
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symbol information/debuginfo is not complete, like
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for instance on IRIX6 with gcc, where no debug info
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is emitted for statics. (See also the nodebug.exp
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testcase.) */
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if (this_addr > best_addr)
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{
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best_addr = this_addr;
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best_pst = tpst;
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}
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}
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}
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return best_pst;
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}
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/* Find which partial symtab contains PC and SECTION. Return 0 if
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none. We return the psymtab that contains a symbol whose address
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exactly matches PC, or, if we cannot find an exact match, the
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psymtab that contains a symbol whose address is closest to PC. */
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static struct partial_symtab *
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find_pc_sect_psymtab (struct objfile *objfile, CORE_ADDR pc,
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struct obj_section *section,
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struct minimal_symbol *msymbol)
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{
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struct partial_symtab *pst;
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/* Try just the PSYMTABS_ADDRMAP mapping first as it has better granularity
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than the later used TEXTLOW/TEXTHIGH one. */
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if (objfile->psymtabs_addrmap != NULL)
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{
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pst = addrmap_find (objfile->psymtabs_addrmap, pc);
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if (pst != NULL)
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{
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/* FIXME: addrmaps currently do not handle overlayed sections,
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so fall back to the non-addrmap case if we're debugging
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overlays and the addrmap returned the wrong section. */
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if (overlay_debugging && msymbol && section)
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{
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struct partial_symbol *p;
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/* NOTE: This assumes that every psymbol has a
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corresponding msymbol, which is not necessarily
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true; the debug info might be much richer than the
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object's symbol table. */
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p = find_pc_sect_psymbol (pst, pc, section);
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if (!p
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|| SYMBOL_VALUE_ADDRESS (p)
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!= SYMBOL_VALUE_ADDRESS (msymbol))
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goto next;
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}
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/* We do not try to call FIND_PC_SECT_PSYMTAB_CLOSER as
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PSYMTABS_ADDRMAP we used has already the best 1-byte
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granularity and FIND_PC_SECT_PSYMTAB_CLOSER may mislead us into
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a worse chosen section due to the TEXTLOW/TEXTHIGH ranges
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overlap. */
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return pst;
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}
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}
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next:
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/* Existing PSYMTABS_ADDRMAP mapping is present even for PARTIAL_SYMTABs
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which still have no corresponding full SYMTABs read. But it is not
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present for non-DWARF2 debug infos not supporting PSYMTABS_ADDRMAP in GDB
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so far. */
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/* Check even OBJFILE with non-zero PSYMTABS_ADDRMAP as only several of
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its CUs may be missing in PSYMTABS_ADDRMAP as they may be varying
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debug info type in single OBJFILE. */
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ALL_OBJFILE_PSYMTABS (objfile, pst)
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if (pc >= pst->textlow && pc < pst->texthigh)
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{
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struct partial_symtab *best_pst;
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best_pst = find_pc_sect_psymtab_closer (pc, section, pst, msymbol);
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if (best_pst != NULL)
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return best_pst;
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}
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return NULL;
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}
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static struct symtab *
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find_pc_sect_symtab_from_partial (struct objfile *objfile,
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struct minimal_symbol *msymbol,
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CORE_ADDR pc, struct obj_section *section,
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int warn_if_readin)
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{
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struct partial_symtab *ps = find_pc_sect_psymtab (objfile, pc, section,
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msymbol);
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if (ps)
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{
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if (warn_if_readin && ps->readin)
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/* Might want to error() here (in case symtab is corrupt and
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will cause a core dump), but maybe we can successfully
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continue, so let's not. */
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warning (_("\
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(Internal error: pc %s in read in psymtab, but not in symtab.)\n"),
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paddress (get_objfile_arch (ps->objfile), pc));
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return PSYMTAB_TO_SYMTAB (ps);
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}
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return NULL;
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}
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/* Find which partial symbol within a psymtab matches PC and SECTION.
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Return 0 if none. */
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static struct partial_symbol *
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find_pc_sect_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc,
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struct obj_section *section)
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{
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struct partial_symbol *best = NULL, *p, **pp;
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CORE_ADDR best_pc;
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gdb_assert (psymtab != NULL);
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/* Cope with programs that start at address 0 */
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best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0;
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/* Search the global symbols as well as the static symbols, so that
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find_pc_partial_function doesn't use a minimal symbol and thus
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cache a bad endaddr. */
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for (pp = psymtab->objfile->global_psymbols.list + psymtab->globals_offset;
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(pp - (psymtab->objfile->global_psymbols.list + psymtab->globals_offset)
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< psymtab->n_global_syms);
|
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pp++)
|
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{
|
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p = *pp;
|
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if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
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&& SYMBOL_CLASS (p) == LOC_BLOCK
|
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&& pc >= SYMBOL_VALUE_ADDRESS (p)
|
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&& (SYMBOL_VALUE_ADDRESS (p) > best_pc
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|| (psymtab->textlow == 0
|
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&& best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
|
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{
|
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if (section) /* match on a specific section */
|
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{
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fixup_psymbol_section (p, psymtab->objfile);
|
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if (!matching_obj_sections (SYMBOL_OBJ_SECTION (p), section))
|
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continue;
|
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}
|
||
best_pc = SYMBOL_VALUE_ADDRESS (p);
|
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best = p;
|
||
}
|
||
}
|
||
|
||
for (pp = psymtab->objfile->static_psymbols.list + psymtab->statics_offset;
|
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(pp - (psymtab->objfile->static_psymbols.list + psymtab->statics_offset)
|
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< psymtab->n_static_syms);
|
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pp++)
|
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{
|
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p = *pp;
|
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if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
|
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&& SYMBOL_CLASS (p) == LOC_BLOCK
|
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&& pc >= SYMBOL_VALUE_ADDRESS (p)
|
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&& (SYMBOL_VALUE_ADDRESS (p) > best_pc
|
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|| (psymtab->textlow == 0
|
||
&& best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0)))
|
||
{
|
||
if (section) /* match on a specific section */
|
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{
|
||
fixup_psymbol_section (p, psymtab->objfile);
|
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if (!matching_obj_sections (SYMBOL_OBJ_SECTION (p), section))
|
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continue;
|
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}
|
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best_pc = SYMBOL_VALUE_ADDRESS (p);
|
||
best = p;
|
||
}
|
||
}
|
||
|
||
return best;
|
||
}
|
||
|
||
static struct partial_symbol *
|
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fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile)
|
||
{
|
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CORE_ADDR addr;
|
||
|
||
if (!psym)
|
||
return NULL;
|
||
|
||
if (SYMBOL_OBJ_SECTION (psym))
|
||
return psym;
|
||
|
||
gdb_assert (objfile);
|
||
|
||
switch (SYMBOL_CLASS (psym))
|
||
{
|
||
case LOC_STATIC:
|
||
case LOC_LABEL:
|
||
case LOC_BLOCK:
|
||
addr = SYMBOL_VALUE_ADDRESS (psym);
|
||
break;
|
||
default:
|
||
/* Nothing else will be listed in the minsyms -- no use looking
|
||
it up. */
|
||
return psym;
|
||
}
|
||
|
||
fixup_section (&psym->ginfo, addr, objfile);
|
||
|
||
return psym;
|
||
}
|
||
|
||
static struct symtab *
|
||
lookup_symbol_aux_psymtabs (struct objfile *objfile,
|
||
int block_index, const char *name,
|
||
const domain_enum domain)
|
||
{
|
||
struct partial_symtab *ps;
|
||
const int psymtab_index = (block_index == GLOBAL_BLOCK ? 1 : 0);
|
||
|
||
ALL_OBJFILE_PSYMTABS (objfile, ps)
|
||
{
|
||
if (!ps->readin && lookup_partial_symbol (ps, name, psymtab_index, domain))
|
||
return PSYMTAB_TO_SYMTAB (ps);
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Look in PST for a symbol in DOMAIN whose name matches NAME. Search
|
||
the global block of PST if GLOBAL, and otherwise the static block.
|
||
MATCH is the comparison operation that returns true iff MATCH (s,
|
||
NAME), where s is a SYMBOL_SEARCH_NAME. If ORDERED_COMPARE is
|
||
non-null, the symbols in the block are assumed to be ordered
|
||
according to it (allowing binary search). It must be compatible
|
||
with MATCH. Returns the symbol, if found, and otherwise NULL. */
|
||
|
||
static struct partial_symbol *
|
||
match_partial_symbol (struct partial_symtab *pst, int global,
|
||
const char *name, domain_enum domain,
|
||
int (*match) (const char *, const char *),
|
||
int (*ordered_compare) (const char *, const char *))
|
||
{
|
||
struct partial_symbol **start, **psym;
|
||
struct partial_symbol **top, **real_top, **bottom, **center;
|
||
int length = (global ? pst->n_global_syms : pst->n_static_syms);
|
||
int do_linear_search = 1;
|
||
|
||
if (length == 0)
|
||
return NULL;
|
||
start = (global ?
|
||
pst->objfile->global_psymbols.list + pst->globals_offset :
|
||
pst->objfile->static_psymbols.list + pst->statics_offset);
|
||
|
||
if (global && ordered_compare) /* Can use a binary search. */
|
||
{
|
||
do_linear_search = 0;
|
||
|
||
/* Binary search. This search is guaranteed to end with center
|
||
pointing at the earliest partial symbol whose name might be
|
||
correct. At that point *all* partial symbols with an
|
||
appropriate name will be checked against the correct
|
||
domain. */
|
||
|
||
bottom = start;
|
||
top = start + length - 1;
|
||
real_top = top;
|
||
while (top > bottom)
|
||
{
|
||
center = bottom + (top - bottom) / 2;
|
||
gdb_assert (center < top);
|
||
if (!do_linear_search
|
||
&& (SYMBOL_LANGUAGE (*center) == language_java))
|
||
do_linear_search = 1;
|
||
if (ordered_compare (SYMBOL_SEARCH_NAME (*center), name) >= 0)
|
||
top = center;
|
||
else
|
||
bottom = center + 1;
|
||
}
|
||
gdb_assert (top == bottom);
|
||
|
||
while (top <= real_top
|
||
&& match (SYMBOL_SEARCH_NAME (*top), name) == 0)
|
||
{
|
||
if (symbol_matches_domain (SYMBOL_LANGUAGE (*top),
|
||
SYMBOL_DOMAIN (*top), domain))
|
||
return *top;
|
||
top++;
|
||
}
|
||
}
|
||
|
||
/* Can't use a binary search or else we found during the binary search that
|
||
we should also do a linear search. */
|
||
|
||
if (do_linear_search)
|
||
{
|
||
for (psym = start; psym < start + length; psym++)
|
||
{
|
||
if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym),
|
||
SYMBOL_DOMAIN (*psym), domain)
|
||
&& match (SYMBOL_SEARCH_NAME (*psym), name) == 0)
|
||
return *psym;
|
||
}
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
static void
|
||
pre_expand_symtabs_matching_psymtabs (struct objfile *objfile,
|
||
int kind, const char *name,
|
||
domain_enum domain)
|
||
{
|
||
/* Nothing. */
|
||
}
|
||
|
||
/* Look, in partial_symtab PST, for symbol whose natural name is NAME.
|
||
Check the global symbols if GLOBAL, the static symbols if not. */
|
||
|
||
static struct partial_symbol *
|
||
lookup_partial_symbol (struct partial_symtab *pst, const char *name,
|
||
int global, domain_enum domain)
|
||
{
|
||
struct partial_symbol **start, **psym;
|
||
struct partial_symbol **top, **real_top, **bottom, **center;
|
||
int length = (global ? pst->n_global_syms : pst->n_static_syms);
|
||
int do_linear_search = 1;
|
||
|
||
if (length == 0)
|
||
{
|
||
return (NULL);
|
||
}
|
||
start = (global ?
|
||
pst->objfile->global_psymbols.list + pst->globals_offset :
|
||
pst->objfile->static_psymbols.list + pst->statics_offset);
|
||
|
||
if (global) /* This means we can use a binary search. */
|
||
{
|
||
do_linear_search = 0;
|
||
|
||
/* Binary search. This search is guaranteed to end with center
|
||
pointing at the earliest partial symbol whose name might be
|
||
correct. At that point *all* partial symbols with an
|
||
appropriate name will be checked against the correct
|
||
domain. */
|
||
|
||
bottom = start;
|
||
top = start + length - 1;
|
||
real_top = top;
|
||
while (top > bottom)
|
||
{
|
||
center = bottom + (top - bottom) / 2;
|
||
if (!(center < top))
|
||
internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
|
||
if (!do_linear_search
|
||
&& SYMBOL_LANGUAGE (*center) == language_java)
|
||
{
|
||
do_linear_search = 1;
|
||
}
|
||
if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center), name) >= 0)
|
||
{
|
||
top = center;
|
||
}
|
||
else
|
||
{
|
||
bottom = center + 1;
|
||
}
|
||
}
|
||
if (!(top == bottom))
|
||
internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
|
||
|
||
while (top <= real_top
|
||
&& SYMBOL_MATCHES_SEARCH_NAME (*top, name))
|
||
{
|
||
if (symbol_matches_domain (SYMBOL_LANGUAGE (*top),
|
||
SYMBOL_DOMAIN (*top), domain))
|
||
return (*top);
|
||
top++;
|
||
}
|
||
}
|
||
|
||
/* Can't use a binary search or else we found during the binary search that
|
||
we should also do a linear search. */
|
||
|
||
if (do_linear_search)
|
||
{
|
||
for (psym = start; psym < start + length; psym++)
|
||
{
|
||
if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym),
|
||
SYMBOL_DOMAIN (*psym), domain)
|
||
&& SYMBOL_MATCHES_SEARCH_NAME (*psym, name))
|
||
return (*psym);
|
||
}
|
||
}
|
||
|
||
return (NULL);
|
||
}
|
||
|
||
/* Get the symbol table that corresponds to a partial_symtab.
|
||
This is fast after the first time you do it. In fact, there
|
||
is an even faster macro PSYMTAB_TO_SYMTAB that does the fast
|
||
case inline. */
|
||
|
||
static struct symtab *
|
||
psymtab_to_symtab (struct partial_symtab *pst)
|
||
{
|
||
/* If it's been looked up before, return it. */
|
||
if (pst->symtab)
|
||
return pst->symtab;
|
||
|
||
/* If it has not yet been read in, read it. */
|
||
if (!pst->readin)
|
||
{
|
||
struct cleanup *back_to = increment_reading_symtab ();
|
||
|
||
(*pst->read_symtab) (pst);
|
||
do_cleanups (back_to);
|
||
}
|
||
|
||
return pst->symtab;
|
||
}
|
||
|
||
static void
|
||
relocate_psymtabs (struct objfile *objfile,
|
||
struct section_offsets *new_offsets,
|
||
struct section_offsets *delta)
|
||
{
|
||
struct partial_symbol **psym;
|
||
struct partial_symtab *p;
|
||
|
||
ALL_OBJFILE_PSYMTABS (objfile, p)
|
||
{
|
||
p->textlow += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
|
||
p->texthigh += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
|
||
}
|
||
|
||
for (psym = objfile->global_psymbols.list;
|
||
psym < objfile->global_psymbols.next;
|
||
psym++)
|
||
{
|
||
fixup_psymbol_section (*psym, objfile);
|
||
if (SYMBOL_SECTION (*psym) >= 0)
|
||
SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta,
|
||
SYMBOL_SECTION (*psym));
|
||
}
|
||
for (psym = objfile->static_psymbols.list;
|
||
psym < objfile->static_psymbols.next;
|
||
psym++)
|
||
{
|
||
fixup_psymbol_section (*psym, objfile);
|
||
if (SYMBOL_SECTION (*psym) >= 0)
|
||
SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta,
|
||
SYMBOL_SECTION (*psym));
|
||
}
|
||
}
|
||
|
||
static struct symtab *
|
||
find_last_source_symtab_from_partial (struct objfile *ofp)
|
||
{
|
||
struct partial_symtab *ps;
|
||
struct partial_symtab *cs_pst = 0;
|
||
|
||
ALL_OBJFILE_PSYMTABS (ofp, ps)
|
||
{
|
||
const char *name = ps->filename;
|
||
int len = strlen (name);
|
||
|
||
if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0
|
||
|| strcmp (name, "<<C++-namespaces>>") == 0)))
|
||
cs_pst = ps;
|
||
}
|
||
|
||
if (cs_pst)
|
||
{
|
||
if (cs_pst->readin)
|
||
{
|
||
internal_error (__FILE__, __LINE__,
|
||
_("select_source_symtab: "
|
||
"readin pst found and no symtabs."));
|
||
}
|
||
else
|
||
return PSYMTAB_TO_SYMTAB (cs_pst);
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
static void
|
||
forget_cached_source_info_partial (struct objfile *objfile)
|
||
{
|
||
struct partial_symtab *pst;
|
||
|
||
ALL_OBJFILE_PSYMTABS (objfile, pst)
|
||
{
|
||
if (pst->fullname != NULL)
|
||
{
|
||
xfree (pst->fullname);
|
||
pst->fullname = NULL;
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
print_partial_symbols (struct gdbarch *gdbarch,
|
||
struct partial_symbol **p, int count, char *what,
|
||
struct ui_file *outfile)
|
||
{
|
||
fprintf_filtered (outfile, " %s partial symbols:\n", what);
|
||
while (count-- > 0)
|
||
{
|
||
fprintf_filtered (outfile, " `%s'", SYMBOL_LINKAGE_NAME (*p));
|
||
if (SYMBOL_DEMANGLED_NAME (*p) != NULL)
|
||
{
|
||
fprintf_filtered (outfile, " `%s'", SYMBOL_DEMANGLED_NAME (*p));
|
||
}
|
||
fputs_filtered (", ", outfile);
|
||
switch (SYMBOL_DOMAIN (*p))
|
||
{
|
||
case UNDEF_DOMAIN:
|
||
fputs_filtered ("undefined domain, ", outfile);
|
||
break;
|
||
case VAR_DOMAIN:
|
||
/* This is the usual thing -- don't print it */
|
||
break;
|
||
case STRUCT_DOMAIN:
|
||
fputs_filtered ("struct domain, ", outfile);
|
||
break;
|
||
case LABEL_DOMAIN:
|
||
fputs_filtered ("label domain, ", outfile);
|
||
break;
|
||
default:
|
||
fputs_filtered ("<invalid domain>, ", outfile);
|
||
break;
|
||
}
|
||
switch (SYMBOL_CLASS (*p))
|
||
{
|
||
case LOC_UNDEF:
|
||
fputs_filtered ("undefined", outfile);
|
||
break;
|
||
case LOC_CONST:
|
||
fputs_filtered ("constant int", outfile);
|
||
break;
|
||
case LOC_STATIC:
|
||
fputs_filtered ("static", outfile);
|
||
break;
|
||
case LOC_REGISTER:
|
||
fputs_filtered ("register", outfile);
|
||
break;
|
||
case LOC_ARG:
|
||
fputs_filtered ("pass by value", outfile);
|
||
break;
|
||
case LOC_REF_ARG:
|
||
fputs_filtered ("pass by reference", outfile);
|
||
break;
|
||
case LOC_REGPARM_ADDR:
|
||
fputs_filtered ("register address parameter", outfile);
|
||
break;
|
||
case LOC_LOCAL:
|
||
fputs_filtered ("stack parameter", outfile);
|
||
break;
|
||
case LOC_TYPEDEF:
|
||
fputs_filtered ("type", outfile);
|
||
break;
|
||
case LOC_LABEL:
|
||
fputs_filtered ("label", outfile);
|
||
break;
|
||
case LOC_BLOCK:
|
||
fputs_filtered ("function", outfile);
|
||
break;
|
||
case LOC_CONST_BYTES:
|
||
fputs_filtered ("constant bytes", outfile);
|
||
break;
|
||
case LOC_UNRESOLVED:
|
||
fputs_filtered ("unresolved", outfile);
|
||
break;
|
||
case LOC_OPTIMIZED_OUT:
|
||
fputs_filtered ("optimized out", outfile);
|
||
break;
|
||
case LOC_COMPUTED:
|
||
fputs_filtered ("computed at runtime", outfile);
|
||
break;
|
||
default:
|
||
fputs_filtered ("<invalid location>", outfile);
|
||
break;
|
||
}
|
||
fputs_filtered (", ", outfile);
|
||
fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (*p)), outfile);
|
||
fprintf_filtered (outfile, "\n");
|
||
p++;
|
||
}
|
||
}
|
||
|
||
static void
|
||
dump_psymtab (struct objfile *objfile, struct partial_symtab *psymtab,
|
||
struct ui_file *outfile)
|
||
{
|
||
struct gdbarch *gdbarch = get_objfile_arch (objfile);
|
||
int i;
|
||
|
||
fprintf_filtered (outfile, "\nPartial symtab for source file %s ",
|
||
psymtab->filename);
|
||
fprintf_filtered (outfile, "(object ");
|
||
gdb_print_host_address (psymtab, outfile);
|
||
fprintf_filtered (outfile, ")\n\n");
|
||
fprintf_unfiltered (outfile, " Read from object file %s (",
|
||
objfile->name);
|
||
gdb_print_host_address (objfile, outfile);
|
||
fprintf_unfiltered (outfile, ")\n");
|
||
|
||
if (psymtab->readin)
|
||
{
|
||
fprintf_filtered (outfile,
|
||
" Full symtab was read (at ");
|
||
gdb_print_host_address (psymtab->symtab, outfile);
|
||
fprintf_filtered (outfile, " by function at ");
|
||
gdb_print_host_address (psymtab->read_symtab, outfile);
|
||
fprintf_filtered (outfile, ")\n");
|
||
}
|
||
|
||
fprintf_filtered (outfile, " Relocate symbols by ");
|
||
for (i = 0; i < psymtab->objfile->num_sections; ++i)
|
||
{
|
||
if (i != 0)
|
||
fprintf_filtered (outfile, ", ");
|
||
wrap_here (" ");
|
||
fputs_filtered (paddress (gdbarch,
|
||
ANOFFSET (psymtab->section_offsets, i)),
|
||
outfile);
|
||
}
|
||
fprintf_filtered (outfile, "\n");
|
||
|
||
fprintf_filtered (outfile, " Symbols cover text addresses ");
|
||
fputs_filtered (paddress (gdbarch, psymtab->textlow), outfile);
|
||
fprintf_filtered (outfile, "-");
|
||
fputs_filtered (paddress (gdbarch, psymtab->texthigh), outfile);
|
||
fprintf_filtered (outfile, "\n");
|
||
fprintf_filtered (outfile, " Depends on %d other partial symtabs.\n",
|
||
psymtab->number_of_dependencies);
|
||
for (i = 0; i < psymtab->number_of_dependencies; i++)
|
||
{
|
||
fprintf_filtered (outfile, " %d ", i);
|
||
gdb_print_host_address (psymtab->dependencies[i], outfile);
|
||
fprintf_filtered (outfile, " %s\n",
|
||
psymtab->dependencies[i]->filename);
|
||
}
|
||
if (psymtab->n_global_syms > 0)
|
||
{
|
||
print_partial_symbols (gdbarch,
|
||
objfile->global_psymbols.list
|
||
+ psymtab->globals_offset,
|
||
psymtab->n_global_syms, "Global", outfile);
|
||
}
|
||
if (psymtab->n_static_syms > 0)
|
||
{
|
||
print_partial_symbols (gdbarch,
|
||
objfile->static_psymbols.list
|
||
+ psymtab->statics_offset,
|
||
psymtab->n_static_syms, "Static", outfile);
|
||
}
|
||
fprintf_filtered (outfile, "\n");
|
||
}
|
||
|
||
static void
|
||
print_psymtab_stats_for_objfile (struct objfile *objfile)
|
||
{
|
||
int i;
|
||
struct partial_symtab *ps;
|
||
|
||
i = 0;
|
||
ALL_OBJFILE_PSYMTABS (objfile, ps)
|
||
{
|
||
if (ps->readin == 0)
|
||
i++;
|
||
}
|
||
printf_filtered (_(" Number of psym tables (not yet expanded): %d\n"), i);
|
||
}
|
||
|
||
static void
|
||
dump_psymtabs_for_objfile (struct objfile *objfile)
|
||
{
|
||
struct partial_symtab *psymtab;
|
||
|
||
if (objfile->psymtabs)
|
||
{
|
||
printf_filtered ("Psymtabs:\n");
|
||
for (psymtab = objfile->psymtabs;
|
||
psymtab != NULL;
|
||
psymtab = psymtab->next)
|
||
{
|
||
printf_filtered ("%s at ",
|
||
psymtab->filename);
|
||
gdb_print_host_address (psymtab, gdb_stdout);
|
||
printf_filtered (", ");
|
||
if (psymtab->objfile != objfile)
|
||
{
|
||
printf_filtered ("NOT ON CHAIN! ");
|
||
}
|
||
wrap_here (" ");
|
||
}
|
||
printf_filtered ("\n\n");
|
||
}
|
||
}
|
||
|
||
/* Look through the partial symtabs for all symbols which begin
|
||
by matching FUNC_NAME. Make sure we read that symbol table in. */
|
||
|
||
static void
|
||
read_symtabs_for_function (struct objfile *objfile, const char *func_name)
|
||
{
|
||
struct partial_symtab *ps;
|
||
|
||
ALL_OBJFILE_PSYMTABS (objfile, ps)
|
||
{
|
||
if (ps->readin)
|
||
continue;
|
||
|
||
if ((lookup_partial_symbol (ps, func_name, 1, VAR_DOMAIN)
|
||
!= NULL)
|
||
|| (lookup_partial_symbol (ps, func_name, 0, VAR_DOMAIN)
|
||
!= NULL))
|
||
psymtab_to_symtab (ps);
|
||
}
|
||
}
|
||
|
||
static void
|
||
expand_partial_symbol_tables (struct objfile *objfile)
|
||
{
|
||
struct partial_symtab *psymtab;
|
||
|
||
for (psymtab = objfile->psymtabs;
|
||
psymtab != NULL;
|
||
psymtab = psymtab->next)
|
||
{
|
||
psymtab_to_symtab (psymtab);
|
||
}
|
||
}
|
||
|
||
static void
|
||
read_psymtabs_with_filename (struct objfile *objfile, const char *filename)
|
||
{
|
||
struct partial_symtab *p;
|
||
|
||
ALL_OBJFILE_PSYMTABS (objfile, p)
|
||
{
|
||
if (strcmp (filename, p->filename) == 0)
|
||
PSYMTAB_TO_SYMTAB (p);
|
||
}
|
||
}
|
||
|
||
static void
|
||
map_symbol_names_psymtab (struct objfile *objfile,
|
||
void (*fun) (const char *, void *), void *data)
|
||
{
|
||
struct partial_symtab *ps;
|
||
|
||
ALL_OBJFILE_PSYMTABS (objfile, ps)
|
||
{
|
||
struct partial_symbol **psym;
|
||
|
||
/* If the psymtab's been read in we'll get it when we search
|
||
through the blockvector. */
|
||
if (ps->readin)
|
||
continue;
|
||
|
||
for (psym = objfile->global_psymbols.list + ps->globals_offset;
|
||
psym < (objfile->global_psymbols.list + ps->globals_offset
|
||
+ ps->n_global_syms);
|
||
psym++)
|
||
{
|
||
/* If interrupted, then quit. */
|
||
QUIT;
|
||
(*fun) (SYMBOL_NATURAL_NAME (*psym), data);
|
||
}
|
||
|
||
for (psym = objfile->static_psymbols.list + ps->statics_offset;
|
||
psym < (objfile->static_psymbols.list + ps->statics_offset
|
||
+ ps->n_static_syms);
|
||
psym++)
|
||
{
|
||
QUIT;
|
||
(*fun) (SYMBOL_NATURAL_NAME (*psym), data);
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
map_symbol_filenames_psymtab (struct objfile *objfile,
|
||
void (*fun) (const char *, const char *,
|
||
void *),
|
||
void *data)
|
||
{
|
||
struct partial_symtab *ps;
|
||
|
||
ALL_OBJFILE_PSYMTABS (objfile, ps)
|
||
{
|
||
const char *fullname;
|
||
|
||
if (ps->readin)
|
||
continue;
|
||
|
||
fullname = psymtab_to_fullname (ps);
|
||
(*fun) (ps->filename, fullname, data);
|
||
}
|
||
}
|
||
|
||
int find_and_open_source (const char *filename,
|
||
const char *dirname,
|
||
char **fullname);
|
||
|
||
/* Finds the fullname that a partial_symtab represents.
|
||
|
||
If this functions finds the fullname, it will save it in ps->fullname
|
||
and it will also return the value.
|
||
|
||
If this function fails to find the file that this partial_symtab represents,
|
||
NULL will be returned and ps->fullname will be set to NULL. */
|
||
static char *
|
||
psymtab_to_fullname (struct partial_symtab *ps)
|
||
{
|
||
int r;
|
||
|
||
if (!ps)
|
||
return NULL;
|
||
|
||
/* Don't check ps->fullname here, the file could have been
|
||
deleted/moved/..., look for it again */
|
||
r = find_and_open_source (ps->filename, ps->dirname, &ps->fullname);
|
||
|
||
if (r >= 0)
|
||
{
|
||
close (r);
|
||
return ps->fullname;
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
static const char *
|
||
find_symbol_file_from_partial (struct objfile *objfile, const char *name)
|
||
{
|
||
struct partial_symtab *pst;
|
||
|
||
ALL_OBJFILE_PSYMTABS (objfile, pst)
|
||
{
|
||
if (lookup_partial_symbol (pst, name, 1, VAR_DOMAIN))
|
||
return pst->filename;
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
/* For all symbols, s, in BLOCK that are in NAMESPACE and match NAME
|
||
according to the function MATCH, call CALLBACK(BLOCK, s, DATA).
|
||
BLOCK is assumed to come from OBJFILE. Returns 1 iff CALLBACK
|
||
ever returns non-zero, and otherwise returns 0. */
|
||
|
||
static int
|
||
map_block (const char *name, domain_enum namespace, struct objfile *objfile,
|
||
struct block *block,
|
||
int (*callback) (struct block *, struct symbol *, void *),
|
||
void *data,
|
||
int (*match) (const char *, const char *))
|
||
{
|
||
struct dict_iterator iter;
|
||
struct symbol *sym;
|
||
|
||
for (sym = dict_iter_match_first (BLOCK_DICT (block), name, match, &iter);
|
||
sym != NULL; sym = dict_iter_match_next (name, match, &iter))
|
||
{
|
||
if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
|
||
SYMBOL_DOMAIN (sym), namespace))
|
||
{
|
||
if (callback (block, sym, data))
|
||
return 1;
|
||
}
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Psymtab version of map_matching_symbols. See its definition in
|
||
the definition of quick_symbol_functions in symfile.h. */
|
||
|
||
static void
|
||
map_matching_symbols_psymtab (const char *name, domain_enum namespace,
|
||
struct objfile *objfile, int global,
|
||
int (*callback) (struct block *,
|
||
struct symbol *, void *),
|
||
void *data,
|
||
int (*match) (const char *, const char *),
|
||
int (*ordered_compare) (const char *,
|
||
const char *))
|
||
{
|
||
const int block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK;
|
||
struct partial_symtab *ps;
|
||
|
||
ALL_OBJFILE_PSYMTABS (objfile, ps)
|
||
{
|
||
QUIT;
|
||
if (ps->readin
|
||
|| match_partial_symbol (ps, global, name, namespace, match,
|
||
ordered_compare))
|
||
{
|
||
struct symtab *s = PSYMTAB_TO_SYMTAB (ps);
|
||
struct block *block;
|
||
|
||
if (s == NULL || !s->primary)
|
||
continue;
|
||
block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), block_kind);
|
||
if (map_block (name, namespace, objfile, block,
|
||
callback, data, match))
|
||
return;
|
||
if (callback (block, NULL, data))
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
expand_symtabs_matching_via_partial (struct objfile *objfile,
|
||
int (*file_matcher) (const char *, void *),
|
||
int (*name_matcher) (const char *, void *),
|
||
domain_enum kind,
|
||
void *data)
|
||
{
|
||
struct partial_symtab *ps;
|
||
|
||
ALL_OBJFILE_PSYMTABS (objfile, ps)
|
||
{
|
||
struct partial_symbol **psym;
|
||
struct partial_symbol **bound, **gbound, **sbound;
|
||
int keep_going = 1;
|
||
|
||
if (ps->readin)
|
||
continue;
|
||
|
||
if (! (*file_matcher) (ps->filename, data))
|
||
continue;
|
||
|
||
gbound = objfile->global_psymbols.list + ps->globals_offset + ps->n_global_syms;
|
||
sbound = objfile->static_psymbols.list + ps->statics_offset + ps->n_static_syms;
|
||
bound = gbound;
|
||
|
||
/* Go through all of the symbols stored in a partial
|
||
symtab in one loop. */
|
||
psym = objfile->global_psymbols.list + ps->globals_offset;
|
||
while (keep_going)
|
||
{
|
||
if (psym >= bound)
|
||
{
|
||
if (bound == gbound && ps->n_static_syms != 0)
|
||
{
|
||
psym = objfile->static_psymbols.list + ps->statics_offset;
|
||
bound = sbound;
|
||
}
|
||
else
|
||
keep_going = 0;
|
||
continue;
|
||
}
|
||
else
|
||
{
|
||
QUIT;
|
||
|
||
if ((*name_matcher) (SYMBOL_NATURAL_NAME (*psym), data)
|
||
&& ((kind == VARIABLES_DOMAIN
|
||
&& SYMBOL_CLASS (*psym) != LOC_TYPEDEF
|
||
&& SYMBOL_CLASS (*psym) != LOC_BLOCK)
|
||
|| (kind == FUNCTIONS_DOMAIN
|
||
&& SYMBOL_CLASS (*psym) == LOC_BLOCK)
|
||
|| (kind == TYPES_DOMAIN
|
||
&& SYMBOL_CLASS (*psym) == LOC_TYPEDEF)))
|
||
{
|
||
PSYMTAB_TO_SYMTAB (ps);
|
||
keep_going = 0;
|
||
}
|
||
}
|
||
psym++;
|
||
}
|
||
}
|
||
}
|
||
|
||
static int
|
||
objfile_has_psyms (struct objfile *objfile)
|
||
{
|
||
return objfile->psymtabs != NULL;
|
||
}
|
||
|
||
const struct quick_symbol_functions psym_functions =
|
||
{
|
||
objfile_has_psyms,
|
||
find_last_source_symtab_from_partial,
|
||
forget_cached_source_info_partial,
|
||
lookup_symtab_via_partial_symtab,
|
||
lookup_symbol_aux_psymtabs,
|
||
pre_expand_symtabs_matching_psymtabs,
|
||
print_psymtab_stats_for_objfile,
|
||
dump_psymtabs_for_objfile,
|
||
relocate_psymtabs,
|
||
read_symtabs_for_function,
|
||
expand_partial_symbol_tables,
|
||
read_psymtabs_with_filename,
|
||
find_symbol_file_from_partial,
|
||
map_matching_symbols_psymtab,
|
||
expand_symtabs_matching_via_partial,
|
||
find_pc_sect_symtab_from_partial,
|
||
map_symbol_names_psymtab,
|
||
map_symbol_filenames_psymtab
|
||
};
|
||
|
||
|
||
|
||
/* This compares two partial symbols by names, using strcmp_iw_ordered
|
||
for the comparison. */
|
||
|
||
static int
|
||
compare_psymbols (const void *s1p, const void *s2p)
|
||
{
|
||
struct partial_symbol *const *s1 = s1p;
|
||
struct partial_symbol *const *s2 = s2p;
|
||
|
||
return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1),
|
||
SYMBOL_SEARCH_NAME (*s2));
|
||
}
|
||
|
||
void
|
||
sort_pst_symbols (struct partial_symtab *pst)
|
||
{
|
||
/* Sort the global list; don't sort the static list */
|
||
|
||
qsort (pst->objfile->global_psymbols.list + pst->globals_offset,
|
||
pst->n_global_syms, sizeof (struct partial_symbol *),
|
||
compare_psymbols);
|
||
}
|
||
|
||
/* Allocate and partially fill a partial symtab. It will be
|
||
completely filled at the end of the symbol list.
|
||
|
||
FILENAME is the name of the symbol-file we are reading from. */
|
||
|
||
struct partial_symtab *
|
||
start_psymtab_common (struct objfile *objfile,
|
||
struct section_offsets *section_offsets,
|
||
const char *filename,
|
||
CORE_ADDR textlow, struct partial_symbol **global_syms,
|
||
struct partial_symbol **static_syms)
|
||
{
|
||
struct partial_symtab *psymtab;
|
||
|
||
psymtab = allocate_psymtab (filename, objfile);
|
||
psymtab->section_offsets = section_offsets;
|
||
psymtab->textlow = textlow;
|
||
psymtab->texthigh = psymtab->textlow; /* default */
|
||
psymtab->globals_offset = global_syms - objfile->global_psymbols.list;
|
||
psymtab->statics_offset = static_syms - objfile->static_psymbols.list;
|
||
return (psymtab);
|
||
}
|
||
|
||
/* Calculate a hash code for the given partial symbol. The hash is
|
||
calculated using the symbol's value, language, domain, class
|
||
and name. These are the values which are set by
|
||
add_psymbol_to_bcache. */
|
||
|
||
static unsigned long
|
||
psymbol_hash (const void *addr, int length)
|
||
{
|
||
unsigned long h = 0;
|
||
struct partial_symbol *psymbol = (struct partial_symbol *) addr;
|
||
unsigned int lang = psymbol->ginfo.language;
|
||
unsigned int domain = PSYMBOL_DOMAIN (psymbol);
|
||
unsigned int class = PSYMBOL_CLASS (psymbol);
|
||
|
||
h = hash_continue (&psymbol->ginfo.value, sizeof (psymbol->ginfo.value), h);
|
||
h = hash_continue (&lang, sizeof (unsigned int), h);
|
||
h = hash_continue (&domain, sizeof (unsigned int), h);
|
||
h = hash_continue (&class, sizeof (unsigned int), h);
|
||
h = hash_continue (psymbol->ginfo.name, strlen (psymbol->ginfo.name), h);
|
||
|
||
return h;
|
||
}
|
||
|
||
/* Returns true if the symbol at addr1 equals the symbol at addr2.
|
||
For the comparison this function uses a symbols value,
|
||
language, domain, class and name. */
|
||
|
||
static int
|
||
psymbol_compare (const void *addr1, const void *addr2, int length)
|
||
{
|
||
struct partial_symbol *sym1 = (struct partial_symbol *) addr1;
|
||
struct partial_symbol *sym2 = (struct partial_symbol *) addr2;
|
||
|
||
return (memcmp (&sym1->ginfo.value, &sym1->ginfo.value,
|
||
sizeof (sym1->ginfo.value)) == 0
|
||
&& sym1->ginfo.language == sym2->ginfo.language
|
||
&& PSYMBOL_DOMAIN (sym1) == PSYMBOL_DOMAIN (sym2)
|
||
&& PSYMBOL_CLASS (sym1) == PSYMBOL_CLASS (sym2)
|
||
&& sym1->ginfo.name == sym2->ginfo.name);
|
||
}
|
||
|
||
/* Initialize a partial symbol bcache. */
|
||
|
||
struct psymbol_bcache *
|
||
psymbol_bcache_init (void)
|
||
{
|
||
struct psymbol_bcache *bcache = XCALLOC (1, struct psymbol_bcache);
|
||
bcache->bcache = bcache_xmalloc (psymbol_hash, psymbol_compare);
|
||
return bcache;
|
||
}
|
||
|
||
/* Free a partial symbol bcache. */
|
||
void
|
||
psymbol_bcache_free (struct psymbol_bcache *bcache)
|
||
{
|
||
if (bcache == NULL)
|
||
return;
|
||
|
||
bcache_xfree (bcache->bcache);
|
||
xfree (bcache);
|
||
}
|
||
|
||
/* Return the internal bcache of the psymbol_bcache BCACHE*/
|
||
|
||
struct bcache *
|
||
psymbol_bcache_get_bcache (struct psymbol_bcache *bcache)
|
||
{
|
||
return bcache->bcache;
|
||
}
|
||
|
||
/* Find a copy of the SYM in BCACHE. If BCACHE has never seen this
|
||
symbol before, add a copy to BCACHE. In either case, return a pointer
|
||
to BCACHE's copy of the symbol. If optional ADDED is not NULL, return
|
||
1 in case of new entry or 0 if returning an old entry. */
|
||
|
||
static const struct partial_symbol *
|
||
psymbol_bcache_full (struct partial_symbol *sym,
|
||
struct psymbol_bcache *bcache,
|
||
int *added)
|
||
{
|
||
return bcache_full (sym,
|
||
sizeof (struct partial_symbol),
|
||
bcache->bcache,
|
||
added);
|
||
}
|
||
|
||
/* Helper function, initialises partial symbol structure and stashes
|
||
it into objfile's bcache. Note that our caching mechanism will
|
||
use all fields of struct partial_symbol to determine hash value of the
|
||
structure. In other words, having two symbols with the same name but
|
||
different domain (or address) is possible and correct. */
|
||
|
||
static const struct partial_symbol *
|
||
add_psymbol_to_bcache (const char *name, int namelength, int copy_name,
|
||
domain_enum domain,
|
||
enum address_class class,
|
||
long val, /* Value as a long */
|
||
CORE_ADDR coreaddr, /* Value as a CORE_ADDR */
|
||
enum language language, struct objfile *objfile,
|
||
int *added)
|
||
{
|
||
struct partial_symbol psymbol;
|
||
|
||
/* We must ensure that the entire 'value' field has been zeroed
|
||
before assigning to it, because an assignment may not write the
|
||
entire field. */
|
||
memset (&psymbol.ginfo.value, 0, sizeof (psymbol.ginfo.value));
|
||
|
||
/* val and coreaddr are mutually exclusive, one of them *will* be zero */
|
||
if (val != 0)
|
||
{
|
||
SYMBOL_VALUE (&psymbol) = val;
|
||
}
|
||
else
|
||
{
|
||
SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr;
|
||
}
|
||
SYMBOL_SECTION (&psymbol) = 0;
|
||
SYMBOL_OBJ_SECTION (&psymbol) = NULL;
|
||
SYMBOL_SET_LANGUAGE (&psymbol, language);
|
||
PSYMBOL_DOMAIN (&psymbol) = domain;
|
||
PSYMBOL_CLASS (&psymbol) = class;
|
||
|
||
SYMBOL_SET_NAMES (&psymbol, name, namelength, copy_name, objfile);
|
||
|
||
/* Stash the partial symbol away in the cache */
|
||
return psymbol_bcache_full (&psymbol,
|
||
objfile->psymbol_cache,
|
||
added);
|
||
}
|
||
|
||
/* Increase the space allocated for LISTP, which is probably
|
||
global_psymbols or static_psymbols. This space will eventually
|
||
be freed in free_objfile(). */
|
||
|
||
static void
|
||
extend_psymbol_list (struct psymbol_allocation_list *listp,
|
||
struct objfile *objfile)
|
||
{
|
||
int new_size;
|
||
|
||
if (listp->size == 0)
|
||
{
|
||
new_size = 255;
|
||
listp->list = (struct partial_symbol **)
|
||
xmalloc (new_size * sizeof (struct partial_symbol *));
|
||
}
|
||
else
|
||
{
|
||
new_size = listp->size * 2;
|
||
listp->list = (struct partial_symbol **)
|
||
xrealloc ((char *) listp->list,
|
||
new_size * sizeof (struct partial_symbol *));
|
||
}
|
||
/* Next assumes we only went one over. Should be good if
|
||
program works correctly */
|
||
listp->next = listp->list + listp->size;
|
||
listp->size = new_size;
|
||
}
|
||
|
||
/* Helper function, adds partial symbol to the given partial symbol
|
||
list. */
|
||
|
||
static void
|
||
append_psymbol_to_list (struct psymbol_allocation_list *list,
|
||
const struct partial_symbol *psym,
|
||
struct objfile *objfile)
|
||
{
|
||
if (list->next >= list->list + list->size)
|
||
extend_psymbol_list (list, objfile);
|
||
*list->next++ = (struct partial_symbol *) psym;
|
||
OBJSTAT (objfile, n_psyms++);
|
||
}
|
||
|
||
/* Add a symbol with a long value to a psymtab.
|
||
Since one arg is a struct, we pass in a ptr and deref it (sigh).
|
||
Return the partial symbol that has been added. */
|
||
|
||
/* NOTE: carlton/2003-09-11: The reason why we return the partial
|
||
symbol is so that callers can get access to the symbol's demangled
|
||
name, which they don't have any cheap way to determine otherwise.
|
||
(Currenly, dwarf2read.c is the only file who uses that information,
|
||
though it's possible that other readers might in the future.)
|
||
Elena wasn't thrilled about that, and I don't blame her, but we
|
||
couldn't come up with a better way to get that information. If
|
||
it's needed in other situations, we could consider breaking up
|
||
SYMBOL_SET_NAMES to provide access to the demangled name lookup
|
||
cache. */
|
||
|
||
const struct partial_symbol *
|
||
add_psymbol_to_list (const char *name, int namelength, int copy_name,
|
||
domain_enum domain,
|
||
enum address_class class,
|
||
struct psymbol_allocation_list *list,
|
||
long val, /* Value as a long */
|
||
CORE_ADDR coreaddr, /* Value as a CORE_ADDR */
|
||
enum language language, struct objfile *objfile)
|
||
{
|
||
const struct partial_symbol *psym;
|
||
|
||
int added;
|
||
|
||
/* Stash the partial symbol away in the cache */
|
||
psym = add_psymbol_to_bcache (name, namelength, copy_name, domain, class,
|
||
val, coreaddr, language, objfile, &added);
|
||
|
||
/* Do not duplicate global partial symbols. */
|
||
if (list == &objfile->global_psymbols
|
||
&& !added)
|
||
return psym;
|
||
|
||
/* Save pointer to partial symbol in psymtab, growing symtab if needed. */
|
||
append_psymbol_to_list (list, psym, objfile);
|
||
return psym;
|
||
}
|
||
|
||
/* Initialize storage for partial symbols. */
|
||
|
||
void
|
||
init_psymbol_list (struct objfile *objfile, int total_symbols)
|
||
{
|
||
/* Free any previously allocated psymbol lists. */
|
||
|
||
if (objfile->global_psymbols.list)
|
||
{
|
||
xfree (objfile->global_psymbols.list);
|
||
}
|
||
if (objfile->static_psymbols.list)
|
||
{
|
||
xfree (objfile->static_psymbols.list);
|
||
}
|
||
|
||
/* Current best guess is that approximately a twentieth
|
||
of the total symbols (in a debugging file) are global or static
|
||
oriented symbols */
|
||
|
||
objfile->global_psymbols.size = total_symbols / 10;
|
||
objfile->static_psymbols.size = total_symbols / 10;
|
||
|
||
if (objfile->global_psymbols.size > 0)
|
||
{
|
||
objfile->global_psymbols.next =
|
||
objfile->global_psymbols.list = (struct partial_symbol **)
|
||
xmalloc ((objfile->global_psymbols.size
|
||
* sizeof (struct partial_symbol *)));
|
||
}
|
||
if (objfile->static_psymbols.size > 0)
|
||
{
|
||
objfile->static_psymbols.next =
|
||
objfile->static_psymbols.list = (struct partial_symbol **)
|
||
xmalloc ((objfile->static_psymbols.size
|
||
* sizeof (struct partial_symbol *)));
|
||
}
|
||
}
|
||
|
||
struct partial_symtab *
|
||
allocate_psymtab (const char *filename, struct objfile *objfile)
|
||
{
|
||
struct partial_symtab *psymtab;
|
||
|
||
if (objfile->free_psymtabs)
|
||
{
|
||
psymtab = objfile->free_psymtabs;
|
||
objfile->free_psymtabs = psymtab->next;
|
||
}
|
||
else
|
||
psymtab = (struct partial_symtab *)
|
||
obstack_alloc (&objfile->objfile_obstack,
|
||
sizeof (struct partial_symtab));
|
||
|
||
memset (psymtab, 0, sizeof (struct partial_symtab));
|
||
psymtab->filename = obsavestring (filename, strlen (filename),
|
||
&objfile->objfile_obstack);
|
||
psymtab->symtab = NULL;
|
||
|
||
/* Prepend it to the psymtab list for the objfile it belongs to.
|
||
Psymtabs are searched in most recent inserted -> least recent
|
||
inserted order. */
|
||
|
||
psymtab->objfile = objfile;
|
||
psymtab->next = objfile->psymtabs;
|
||
objfile->psymtabs = psymtab;
|
||
|
||
return (psymtab);
|
||
}
|
||
|
||
void
|
||
discard_psymtab (struct partial_symtab *pst)
|
||
{
|
||
struct partial_symtab **prev_pst;
|
||
|
||
/* From dbxread.c:
|
||
Empty psymtabs happen as a result of header files which don't
|
||
have any symbols in them. There can be a lot of them. But this
|
||
check is wrong, in that a psymtab with N_SLINE entries but
|
||
nothing else is not empty, but we don't realize that. Fixing
|
||
that without slowing things down might be tricky. */
|
||
|
||
/* First, snip it out of the psymtab chain */
|
||
|
||
prev_pst = &(pst->objfile->psymtabs);
|
||
while ((*prev_pst) != pst)
|
||
prev_pst = &((*prev_pst)->next);
|
||
(*prev_pst) = pst->next;
|
||
|
||
/* Next, put it on a free list for recycling */
|
||
|
||
pst->next = pst->objfile->free_psymtabs;
|
||
pst->objfile->free_psymtabs = pst;
|
||
}
|
||
|
||
|
||
|
||
void
|
||
maintenance_print_psymbols (char *args, int from_tty)
|
||
{
|
||
char **argv;
|
||
struct ui_file *outfile;
|
||
struct cleanup *cleanups;
|
||
char *symname = NULL;
|
||
char *filename = DEV_TTY;
|
||
struct objfile *objfile;
|
||
struct partial_symtab *ps;
|
||
|
||
dont_repeat ();
|
||
|
||
if (args == NULL)
|
||
{
|
||
error (_("print-psymbols takes an output file name and optional symbol file name"));
|
||
}
|
||
argv = gdb_buildargv (args);
|
||
cleanups = make_cleanup_freeargv (argv);
|
||
|
||
if (argv[0] != NULL)
|
||
{
|
||
filename = argv[0];
|
||
/* If a second arg is supplied, it is a source file name to match on */
|
||
if (argv[1] != NULL)
|
||
{
|
||
symname = argv[1];
|
||
}
|
||
}
|
||
|
||
filename = tilde_expand (filename);
|
||
make_cleanup (xfree, filename);
|
||
|
||
outfile = gdb_fopen (filename, FOPEN_WT);
|
||
if (outfile == 0)
|
||
perror_with_name (filename);
|
||
make_cleanup_ui_file_delete (outfile);
|
||
|
||
immediate_quit++;
|
||
ALL_PSYMTABS (objfile, ps)
|
||
if (symname == NULL || strcmp (symname, ps->filename) == 0)
|
||
dump_psymtab (objfile, ps, outfile);
|
||
immediate_quit--;
|
||
do_cleanups (cleanups);
|
||
}
|
||
|
||
/* List all the partial symbol tables whose names match REGEXP (optional). */
|
||
void
|
||
maintenance_info_psymtabs (char *regexp, int from_tty)
|
||
{
|
||
struct program_space *pspace;
|
||
struct objfile *objfile;
|
||
|
||
if (regexp)
|
||
re_comp (regexp);
|
||
|
||
ALL_PSPACES (pspace)
|
||
ALL_PSPACE_OBJFILES (pspace, objfile)
|
||
{
|
||
struct gdbarch *gdbarch = get_objfile_arch (objfile);
|
||
struct partial_symtab *psymtab;
|
||
|
||
/* We don't want to print anything for this objfile until we
|
||
actually find a symtab whose name matches. */
|
||
int printed_objfile_start = 0;
|
||
|
||
ALL_OBJFILE_PSYMTABS (objfile, psymtab)
|
||
{
|
||
QUIT;
|
||
|
||
if (! regexp
|
||
|| re_exec (psymtab->filename))
|
||
{
|
||
if (! printed_objfile_start)
|
||
{
|
||
printf_filtered ("{ objfile %s ", objfile->name);
|
||
wrap_here (" ");
|
||
printf_filtered ("((struct objfile *) %s)\n",
|
||
host_address_to_string (objfile));
|
||
printed_objfile_start = 1;
|
||
}
|
||
|
||
printf_filtered (" { psymtab %s ", psymtab->filename);
|
||
wrap_here (" ");
|
||
printf_filtered ("((struct partial_symtab *) %s)\n",
|
||
host_address_to_string (psymtab));
|
||
|
||
printf_filtered (" readin %s\n",
|
||
psymtab->readin ? "yes" : "no");
|
||
printf_filtered (" fullname %s\n",
|
||
psymtab->fullname ? psymtab->fullname : "(null)");
|
||
printf_filtered (" text addresses ");
|
||
fputs_filtered (paddress (gdbarch, psymtab->textlow),
|
||
gdb_stdout);
|
||
printf_filtered (" -- ");
|
||
fputs_filtered (paddress (gdbarch, psymtab->texthigh),
|
||
gdb_stdout);
|
||
printf_filtered ("\n");
|
||
printf_filtered (" globals ");
|
||
if (psymtab->n_global_syms)
|
||
{
|
||
printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
|
||
host_address_to_string (psymtab->objfile->global_psymbols.list
|
||
+ psymtab->globals_offset),
|
||
psymtab->n_global_syms);
|
||
}
|
||
else
|
||
printf_filtered ("(none)\n");
|
||
printf_filtered (" statics ");
|
||
if (psymtab->n_static_syms)
|
||
{
|
||
printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
|
||
host_address_to_string (psymtab->objfile->static_psymbols.list
|
||
+ psymtab->statics_offset),
|
||
psymtab->n_static_syms);
|
||
}
|
||
else
|
||
printf_filtered ("(none)\n");
|
||
printf_filtered (" dependencies ");
|
||
if (psymtab->number_of_dependencies)
|
||
{
|
||
int i;
|
||
|
||
printf_filtered ("{\n");
|
||
for (i = 0; i < psymtab->number_of_dependencies; i++)
|
||
{
|
||
struct partial_symtab *dep = psymtab->dependencies[i];
|
||
|
||
/* Note the string concatenation there --- no comma. */
|
||
printf_filtered (" psymtab %s "
|
||
"((struct partial_symtab *) %s)\n",
|
||
dep->filename,
|
||
host_address_to_string (dep));
|
||
}
|
||
printf_filtered (" }\n");
|
||
}
|
||
else
|
||
printf_filtered ("(none)\n");
|
||
printf_filtered (" }\n");
|
||
}
|
||
}
|
||
|
||
if (printed_objfile_start)
|
||
printf_filtered ("}\n");
|
||
}
|
||
}
|
||
|
||
/* Check consistency of psymtabs and symtabs. */
|
||
|
||
void
|
||
maintenance_check_symtabs (char *ignore, int from_tty)
|
||
{
|
||
struct symbol *sym;
|
||
struct partial_symbol **psym;
|
||
struct symtab *s = NULL;
|
||
struct partial_symtab *ps;
|
||
struct blockvector *bv;
|
||
struct objfile *objfile;
|
||
struct block *b;
|
||
int length;
|
||
|
||
ALL_PSYMTABS (objfile, ps)
|
||
{
|
||
struct gdbarch *gdbarch = get_objfile_arch (objfile);
|
||
|
||
s = PSYMTAB_TO_SYMTAB (ps);
|
||
if (s == NULL)
|
||
continue;
|
||
bv = BLOCKVECTOR (s);
|
||
b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
|
||
psym = ps->objfile->static_psymbols.list + ps->statics_offset;
|
||
length = ps->n_static_syms;
|
||
while (length--)
|
||
{
|
||
sym = lookup_block_symbol (b, SYMBOL_LINKAGE_NAME (*psym),
|
||
SYMBOL_DOMAIN (*psym));
|
||
if (!sym)
|
||
{
|
||
printf_filtered ("Static symbol `");
|
||
puts_filtered (SYMBOL_LINKAGE_NAME (*psym));
|
||
printf_filtered ("' only found in ");
|
||
puts_filtered (ps->filename);
|
||
printf_filtered (" psymtab\n");
|
||
}
|
||
psym++;
|
||
}
|
||
b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
|
||
psym = ps->objfile->global_psymbols.list + ps->globals_offset;
|
||
length = ps->n_global_syms;
|
||
while (length--)
|
||
{
|
||
sym = lookup_block_symbol (b, SYMBOL_LINKAGE_NAME (*psym),
|
||
SYMBOL_DOMAIN (*psym));
|
||
if (!sym)
|
||
{
|
||
printf_filtered ("Global symbol `");
|
||
puts_filtered (SYMBOL_LINKAGE_NAME (*psym));
|
||
printf_filtered ("' only found in ");
|
||
puts_filtered (ps->filename);
|
||
printf_filtered (" psymtab\n");
|
||
}
|
||
psym++;
|
||
}
|
||
if (ps->texthigh < ps->textlow)
|
||
{
|
||
printf_filtered ("Psymtab ");
|
||
puts_filtered (ps->filename);
|
||
printf_filtered (" covers bad range ");
|
||
fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout);
|
||
printf_filtered (" - ");
|
||
fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout);
|
||
printf_filtered ("\n");
|
||
continue;
|
||
}
|
||
if (ps->texthigh == 0)
|
||
continue;
|
||
if (ps->textlow < BLOCK_START (b) || ps->texthigh > BLOCK_END (b))
|
||
{
|
||
printf_filtered ("Psymtab ");
|
||
puts_filtered (ps->filename);
|
||
printf_filtered (" covers ");
|
||
fputs_filtered (paddress (gdbarch, ps->textlow), gdb_stdout);
|
||
printf_filtered (" - ");
|
||
fputs_filtered (paddress (gdbarch, ps->texthigh), gdb_stdout);
|
||
printf_filtered (" but symtab covers only ");
|
||
fputs_filtered (paddress (gdbarch, BLOCK_START (b)), gdb_stdout);
|
||
printf_filtered (" - ");
|
||
fputs_filtered (paddress (gdbarch, BLOCK_END (b)), gdb_stdout);
|
||
printf_filtered ("\n");
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
|
||
void
|
||
map_partial_symbol_names (void (*fun) (const char *, void *), void *data)
|
||
{
|
||
struct objfile *objfile;
|
||
|
||
ALL_OBJFILES (objfile)
|
||
{
|
||
if (objfile->sf)
|
||
objfile->sf->qf->map_symbol_names (objfile, fun, data);
|
||
}
|
||
}
|
||
|
||
void
|
||
map_partial_symbol_filenames (void (*fun) (const char *, const char *,
|
||
void *),
|
||
void *data)
|
||
{
|
||
struct objfile *objfile;
|
||
|
||
ALL_OBJFILES (objfile)
|
||
{
|
||
if (objfile->sf)
|
||
objfile->sf->qf->map_symbol_filenames (objfile, fun, data);
|
||
}
|
||
}
|