mirror of
https://sourceware.org/git/binutils-gdb.git
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bde09ab702
Some versions of gcc have a bug that causes for (struct mumble : something) ... to give a compiler error. We routinely work around this bug in gdb, but apparently had not done so in a while. This patch fixes the remaining known cases of this problem. gdb/ChangeLog 2019-05-03 Sandra Loosemore <sandra@codesourcery.com> Tom Tromey <tom@tromey.com> * dictionary.c (collate_pending_symbols_by_language): Remove "struct" from foreach. * symtab.c (lookup_global_symbol_from_objfile) (lookup_symbol_in_objfile_from_linkage_name): Remove "struct" from foreach. * ser-tcp.c (net_open): Remove "struct" from foreach. * objfiles.c (objfile_relocate, objfile_rebase) (objfile_has_symbols): Remove "struct" from foreach. * minsyms.c (lookup_minimal_symbol_by_pc_section): Remove "struct" from foreach. * dwarf2read.c (handle_struct_member_die): Remove "struct" from foreach. * darwin-nat.c (thread_info_from_private_thread_info): Remove "struct" from foreach. * ada-lang.c (create_excep_cond_exprs) (ada_exception_catchpoint_cond_string): Remove "struct" from foreach.
1299 lines
36 KiB
C
1299 lines
36 KiB
C
/* Routines for name->symbol lookups in GDB.
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Copyright (C) 2003-2019 Free Software Foundation, Inc.
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Contributed by David Carlton <carlton@bactrian.org> and by Kealia,
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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 <ctype.h>
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#include "gdb_obstack.h"
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#include "symtab.h"
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#include "buildsym.h"
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#include "dictionary.h"
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#include "safe-ctype.h"
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#include <unordered_map>
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/* This file implements dictionaries, which are tables that associate
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symbols to names. They are represented by an opaque type 'struct
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dictionary'. That type has various internal implementations, which
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you can choose between depending on what properties you need
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(e.g. fast lookup, order-preserving, expandable).
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Each dictionary starts with a 'virtual function table' that
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contains the functions that actually implement the various
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operations that dictionaries provide. (Note, however, that, for
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the sake of client code, we also provide some functions that can be
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implemented generically in terms of the functions in the vtable.)
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To add a new dictionary implementation <impl>, what you should do
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is:
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* Add a new element DICT_<IMPL> to dict_type.
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* Create a new structure dictionary_<impl>. If your new
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implementation is a variant of an existing one, make sure that
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their structs have the same initial data members. Define accessor
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macros for your new data members.
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* Implement all the functions in dict_vector as static functions,
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whose name is the same as the corresponding member of dict_vector
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plus _<impl>. You don't have to do this for those members where
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you can reuse existing generic functions
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(e.g. add_symbol_nonexpandable, free_obstack) or in the case where
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your new implementation is a variant of an existing implementation
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and where the variant doesn't affect the member function in
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question.
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* Define a static const struct dict_vector dict_<impl>_vector.
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* Define a function dict_create_<impl> to create these
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gizmos. Add its declaration to dictionary.h.
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To add a new operation <op> on all existing implementations, what
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you should do is:
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* Add a new member <op> to struct dict_vector.
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* If there is useful generic behavior <op>, define a static
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function <op>_something_informative that implements that behavior.
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(E.g. add_symbol_nonexpandable, free_obstack.)
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* For every implementation <impl> that should have its own specific
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behavior for <op>, define a static function <op>_<impl>
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implementing it.
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* Modify all existing dict_vector_<impl>'s to include the appropriate
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member.
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* Define a function dict_<op> that looks up <op> in the dict_vector
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and calls the appropriate function. Add a declaration for
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dict_<op> to dictionary.h. */
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/* An enum representing the various implementations of dictionaries.
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Used only for debugging. */
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enum dict_type
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{
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/* Symbols are stored in a fixed-size hash table. */
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DICT_HASHED,
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/* Symbols are stored in an expandable hash table. */
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DICT_HASHED_EXPANDABLE,
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/* Symbols are stored in a fixed-size array. */
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DICT_LINEAR,
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/* Symbols are stored in an expandable array. */
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DICT_LINEAR_EXPANDABLE
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};
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/* The virtual function table. */
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struct dict_vector
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{
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/* The type of the dictionary. This is only here to make debugging
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a bit easier; it's not actually used. */
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enum dict_type type;
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/* The function to free a dictionary. */
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void (*free) (struct dictionary *dict);
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/* Add a symbol to a dictionary, if possible. */
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void (*add_symbol) (struct dictionary *dict, struct symbol *sym);
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/* Iterator functions. */
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struct symbol *(*iterator_first) (const struct dictionary *dict,
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struct dict_iterator *iterator);
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struct symbol *(*iterator_next) (struct dict_iterator *iterator);
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/* Functions to iterate over symbols with a given name. */
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struct symbol *(*iter_match_first) (const struct dictionary *dict,
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const lookup_name_info &name,
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struct dict_iterator *iterator);
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struct symbol *(*iter_match_next) (const lookup_name_info &name,
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struct dict_iterator *iterator);
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/* A size function, for maint print symtabs. */
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int (*size) (const struct dictionary *dict);
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};
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/* Now comes the structs used to store the data for different
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implementations. If two implementations have data in common, put
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the common data at the top of their structs, ordered in the same
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way. */
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struct dictionary_hashed
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{
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int nbuckets;
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struct symbol **buckets;
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};
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struct dictionary_hashed_expandable
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{
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/* How many buckets we currently have. */
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int nbuckets;
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struct symbol **buckets;
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/* How many syms we currently have; we need this so we will know
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when to add more buckets. */
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int nsyms;
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};
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struct dictionary_linear
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{
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int nsyms;
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struct symbol **syms;
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};
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struct dictionary_linear_expandable
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{
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/* How many symbols we currently have. */
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int nsyms;
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struct symbol **syms;
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/* How many symbols we can store before needing to reallocate. */
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int capacity;
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};
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/* And now, the star of our show. */
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struct dictionary
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{
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const struct language_defn *language;
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const struct dict_vector *vector;
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union
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{
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struct dictionary_hashed hashed;
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struct dictionary_hashed_expandable hashed_expandable;
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struct dictionary_linear linear;
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struct dictionary_linear_expandable linear_expandable;
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}
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data;
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};
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/* Accessor macros. */
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#define DICT_VECTOR(d) (d)->vector
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#define DICT_LANGUAGE(d) (d)->language
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/* These can be used for DICT_HASHED_EXPANDABLE, too. */
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#define DICT_HASHED_NBUCKETS(d) (d)->data.hashed.nbuckets
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#define DICT_HASHED_BUCKETS(d) (d)->data.hashed.buckets
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#define DICT_HASHED_BUCKET(d,i) DICT_HASHED_BUCKETS (d) [i]
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#define DICT_HASHED_EXPANDABLE_NSYMS(d) (d)->data.hashed_expandable.nsyms
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/* These can be used for DICT_LINEAR_EXPANDABLEs, too. */
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#define DICT_LINEAR_NSYMS(d) (d)->data.linear.nsyms
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#define DICT_LINEAR_SYMS(d) (d)->data.linear.syms
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#define DICT_LINEAR_SYM(d,i) DICT_LINEAR_SYMS (d) [i]
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#define DICT_LINEAR_EXPANDABLE_CAPACITY(d) \
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(d)->data.linear_expandable.capacity
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/* The initial size of a DICT_*_EXPANDABLE dictionary. */
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#define DICT_EXPANDABLE_INITIAL_CAPACITY 10
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/* This calculates the number of buckets we'll use in a hashtable,
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given the number of symbols that it will contain. */
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#define DICT_HASHTABLE_SIZE(n) ((n)/5 + 1)
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/* Accessor macros for dict_iterators; they're here rather than
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dictionary.h because code elsewhere should treat dict_iterators as
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opaque. */
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/* The dictionary that the iterator is associated to. */
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#define DICT_ITERATOR_DICT(iter) (iter)->dict
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/* For linear dictionaries, the index of the last symbol returned; for
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hashed dictionaries, the bucket of the last symbol returned. */
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#define DICT_ITERATOR_INDEX(iter) (iter)->index
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/* For hashed dictionaries, this points to the last symbol returned;
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otherwise, this is unused. */
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#define DICT_ITERATOR_CURRENT(iter) (iter)->current
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/* Declarations of functions for vectors. */
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/* Functions that might work across a range of dictionary types. */
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static void add_symbol_nonexpandable (struct dictionary *dict,
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struct symbol *sym);
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static void free_obstack (struct dictionary *dict);
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/* Functions for DICT_HASHED and DICT_HASHED_EXPANDABLE
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dictionaries. */
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static struct symbol *iterator_first_hashed (const struct dictionary *dict,
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struct dict_iterator *iterator);
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static struct symbol *iterator_next_hashed (struct dict_iterator *iterator);
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static struct symbol *iter_match_first_hashed (const struct dictionary *dict,
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const lookup_name_info &name,
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struct dict_iterator *iterator);
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static struct symbol *iter_match_next_hashed (const lookup_name_info &name,
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struct dict_iterator *iterator);
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/* Functions only for DICT_HASHED. */
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static int size_hashed (const struct dictionary *dict);
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/* Functions only for DICT_HASHED_EXPANDABLE. */
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static void free_hashed_expandable (struct dictionary *dict);
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static void add_symbol_hashed_expandable (struct dictionary *dict,
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struct symbol *sym);
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static int size_hashed_expandable (const struct dictionary *dict);
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/* Functions for DICT_LINEAR and DICT_LINEAR_EXPANDABLE
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dictionaries. */
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static struct symbol *iterator_first_linear (const struct dictionary *dict,
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struct dict_iterator *iterator);
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static struct symbol *iterator_next_linear (struct dict_iterator *iterator);
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static struct symbol *iter_match_first_linear (const struct dictionary *dict,
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const lookup_name_info &name,
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struct dict_iterator *iterator);
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static struct symbol *iter_match_next_linear (const lookup_name_info &name,
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struct dict_iterator *iterator);
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static int size_linear (const struct dictionary *dict);
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/* Functions only for DICT_LINEAR_EXPANDABLE. */
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static void free_linear_expandable (struct dictionary *dict);
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static void add_symbol_linear_expandable (struct dictionary *dict,
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struct symbol *sym);
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/* Various vectors that we'll actually use. */
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static const struct dict_vector dict_hashed_vector =
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{
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DICT_HASHED, /* type */
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free_obstack, /* free */
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add_symbol_nonexpandable, /* add_symbol */
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iterator_first_hashed, /* iterator_first */
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iterator_next_hashed, /* iterator_next */
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iter_match_first_hashed, /* iter_name_first */
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iter_match_next_hashed, /* iter_name_next */
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size_hashed, /* size */
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};
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static const struct dict_vector dict_hashed_expandable_vector =
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{
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DICT_HASHED_EXPANDABLE, /* type */
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free_hashed_expandable, /* free */
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add_symbol_hashed_expandable, /* add_symbol */
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iterator_first_hashed, /* iterator_first */
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iterator_next_hashed, /* iterator_next */
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iter_match_first_hashed, /* iter_name_first */
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iter_match_next_hashed, /* iter_name_next */
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size_hashed_expandable, /* size */
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};
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static const struct dict_vector dict_linear_vector =
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{
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DICT_LINEAR, /* type */
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free_obstack, /* free */
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add_symbol_nonexpandable, /* add_symbol */
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iterator_first_linear, /* iterator_first */
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iterator_next_linear, /* iterator_next */
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iter_match_first_linear, /* iter_name_first */
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iter_match_next_linear, /* iter_name_next */
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size_linear, /* size */
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};
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static const struct dict_vector dict_linear_expandable_vector =
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{
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DICT_LINEAR_EXPANDABLE, /* type */
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free_linear_expandable, /* free */
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add_symbol_linear_expandable, /* add_symbol */
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iterator_first_linear, /* iterator_first */
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iterator_next_linear, /* iterator_next */
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iter_match_first_linear, /* iter_name_first */
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iter_match_next_linear, /* iter_name_next */
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size_linear, /* size */
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};
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/* Declarations of helper functions (i.e. ones that don't go into
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vectors). */
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static struct symbol *iterator_hashed_advance (struct dict_iterator *iter);
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static void insert_symbol_hashed (struct dictionary *dict,
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struct symbol *sym);
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static void expand_hashtable (struct dictionary *dict);
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/* The creation functions. */
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/* Create a hashed dictionary of a given language. */
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static struct dictionary *
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dict_create_hashed (struct obstack *obstack,
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enum language language,
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const std::vector<symbol *> &symbol_list)
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{
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/* Allocate the dictionary. */
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struct dictionary *retval = XOBNEW (obstack, struct dictionary);
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DICT_VECTOR (retval) = &dict_hashed_vector;
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DICT_LANGUAGE (retval) = language_def (language);
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/* Allocate space for symbols. */
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int nsyms = symbol_list.size ();
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int nbuckets = DICT_HASHTABLE_SIZE (nsyms);
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DICT_HASHED_NBUCKETS (retval) = nbuckets;
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struct symbol **buckets = XOBNEWVEC (obstack, struct symbol *, nbuckets);
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memset (buckets, 0, nbuckets * sizeof (struct symbol *));
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DICT_HASHED_BUCKETS (retval) = buckets;
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/* Now fill the buckets. */
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for (const auto &sym : symbol_list)
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insert_symbol_hashed (retval, sym);
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return retval;
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}
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/* Create an expandable hashed dictionary of a given language. */
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static struct dictionary *
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dict_create_hashed_expandable (enum language language)
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{
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struct dictionary *retval = XNEW (struct dictionary);
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DICT_VECTOR (retval) = &dict_hashed_expandable_vector;
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DICT_LANGUAGE (retval) = language_def (language);
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DICT_HASHED_NBUCKETS (retval) = DICT_EXPANDABLE_INITIAL_CAPACITY;
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DICT_HASHED_BUCKETS (retval) = XCNEWVEC (struct symbol *,
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DICT_EXPANDABLE_INITIAL_CAPACITY);
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DICT_HASHED_EXPANDABLE_NSYMS (retval) = 0;
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return retval;
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}
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/* Create a linear dictionary of a given language. */
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static struct dictionary *
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dict_create_linear (struct obstack *obstack,
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enum language language,
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const std::vector<symbol *> &symbol_list)
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{
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struct dictionary *retval = XOBNEW (obstack, struct dictionary);
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DICT_VECTOR (retval) = &dict_linear_vector;
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DICT_LANGUAGE (retval) = language_def (language);
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/* Allocate space for symbols. */
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int nsyms = symbol_list.size ();
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DICT_LINEAR_NSYMS (retval) = nsyms;
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struct symbol **syms = XOBNEWVEC (obstack, struct symbol *, nsyms);
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DICT_LINEAR_SYMS (retval) = syms;
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/* Now fill in the symbols. */
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int idx = nsyms - 1;
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for (const auto &sym : symbol_list)
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syms[idx--] = sym;
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return retval;
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}
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/* Create an expandable linear dictionary of a given language. */
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static struct dictionary *
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dict_create_linear_expandable (enum language language)
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{
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struct dictionary *retval = XNEW (struct dictionary);
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DICT_VECTOR (retval) = &dict_linear_expandable_vector;
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DICT_LANGUAGE (retval) = language_def (language);
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DICT_LINEAR_NSYMS (retval) = 0;
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DICT_LINEAR_EXPANDABLE_CAPACITY (retval) = DICT_EXPANDABLE_INITIAL_CAPACITY;
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DICT_LINEAR_SYMS (retval)
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= XNEWVEC (struct symbol *, DICT_LINEAR_EXPANDABLE_CAPACITY (retval));
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return retval;
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}
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/* The functions providing the dictionary interface. */
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/* Free the memory used by a dictionary that's not on an obstack. (If
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any.) */
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static void
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dict_free (struct dictionary *dict)
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{
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(DICT_VECTOR (dict))->free (dict);
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}
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/* Add SYM to DICT. DICT had better be expandable. */
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static void
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dict_add_symbol (struct dictionary *dict, struct symbol *sym)
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{
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(DICT_VECTOR (dict))->add_symbol (dict, sym);
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}
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/* Utility to add a list of symbols to a dictionary.
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DICT must be an expandable dictionary. */
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static void
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dict_add_pending (struct dictionary *dict,
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const std::vector<symbol *> &symbol_list)
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{
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/* Preserve ordering by reversing the list. */
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for (auto sym = symbol_list.rbegin (); sym != symbol_list.rend (); ++sym)
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dict_add_symbol (dict, *sym);
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}
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/* Initialize ITERATOR to point at the first symbol in DICT, and
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return that first symbol, or NULL if DICT is empty. */
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struct symbol *
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dict_iterator_first (const struct dictionary *dict,
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struct dict_iterator *iterator)
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{
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return (DICT_VECTOR (dict))->iterator_first (dict, iterator);
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}
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/* Advance ITERATOR, and return the next symbol, or NULL if there are
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no more symbols. */
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struct symbol *
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dict_iterator_next (struct dict_iterator *iterator)
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{
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return (DICT_VECTOR (DICT_ITERATOR_DICT (iterator)))
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->iterator_next (iterator);
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}
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struct symbol *
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dict_iter_match_first (const struct dictionary *dict,
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const lookup_name_info &name,
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struct dict_iterator *iterator)
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{
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return (DICT_VECTOR (dict))->iter_match_first (dict, name, iterator);
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}
|
|
|
|
struct symbol *
|
|
dict_iter_match_next (const lookup_name_info &name,
|
|
struct dict_iterator *iterator)
|
|
{
|
|
return (DICT_VECTOR (DICT_ITERATOR_DICT (iterator)))
|
|
->iter_match_next (name, iterator);
|
|
}
|
|
|
|
static int
|
|
dict_size (const struct dictionary *dict)
|
|
{
|
|
return (DICT_VECTOR (dict))->size (dict);
|
|
}
|
|
|
|
/* Now come functions (well, one function, currently) that are
|
|
implemented generically by means of the vtable. Typically, they're
|
|
rarely used. */
|
|
|
|
/* Test to see if DICT is empty. */
|
|
|
|
static int
|
|
dict_empty (struct dictionary *dict)
|
|
{
|
|
struct dict_iterator iter;
|
|
|
|
return (dict_iterator_first (dict, &iter) == NULL);
|
|
}
|
|
|
|
|
|
/* The functions implementing the dictionary interface. */
|
|
|
|
/* Generic functions, where appropriate. */
|
|
|
|
static void
|
|
free_obstack (struct dictionary *dict)
|
|
{
|
|
/* Do nothing! */
|
|
}
|
|
|
|
static void
|
|
add_symbol_nonexpandable (struct dictionary *dict, struct symbol *sym)
|
|
{
|
|
internal_error (__FILE__, __LINE__,
|
|
_("dict_add_symbol: non-expandable dictionary"));
|
|
}
|
|
|
|
/* Functions for DICT_HASHED and DICT_HASHED_EXPANDABLE. */
|
|
|
|
static struct symbol *
|
|
iterator_first_hashed (const struct dictionary *dict,
|
|
struct dict_iterator *iterator)
|
|
{
|
|
DICT_ITERATOR_DICT (iterator) = dict;
|
|
DICT_ITERATOR_INDEX (iterator) = -1;
|
|
return iterator_hashed_advance (iterator);
|
|
}
|
|
|
|
static struct symbol *
|
|
iterator_next_hashed (struct dict_iterator *iterator)
|
|
{
|
|
struct symbol *next;
|
|
|
|
next = DICT_ITERATOR_CURRENT (iterator)->hash_next;
|
|
|
|
if (next == NULL)
|
|
return iterator_hashed_advance (iterator);
|
|
else
|
|
{
|
|
DICT_ITERATOR_CURRENT (iterator) = next;
|
|
return next;
|
|
}
|
|
}
|
|
|
|
static struct symbol *
|
|
iterator_hashed_advance (struct dict_iterator *iterator)
|
|
{
|
|
const struct dictionary *dict = DICT_ITERATOR_DICT (iterator);
|
|
int nbuckets = DICT_HASHED_NBUCKETS (dict);
|
|
int i;
|
|
|
|
for (i = DICT_ITERATOR_INDEX (iterator) + 1; i < nbuckets; ++i)
|
|
{
|
|
struct symbol *sym = DICT_HASHED_BUCKET (dict, i);
|
|
|
|
if (sym != NULL)
|
|
{
|
|
DICT_ITERATOR_INDEX (iterator) = i;
|
|
DICT_ITERATOR_CURRENT (iterator) = sym;
|
|
return sym;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static struct symbol *
|
|
iter_match_first_hashed (const struct dictionary *dict,
|
|
const lookup_name_info &name,
|
|
struct dict_iterator *iterator)
|
|
{
|
|
const language_defn *lang = DICT_LANGUAGE (dict);
|
|
unsigned int hash_index = (name.search_name_hash (lang->la_language)
|
|
% DICT_HASHED_NBUCKETS (dict));
|
|
symbol_name_matcher_ftype *matches_name
|
|
= get_symbol_name_matcher (lang, name);
|
|
struct symbol *sym;
|
|
|
|
DICT_ITERATOR_DICT (iterator) = dict;
|
|
|
|
/* Loop through the symbols in the given bucket, breaking when SYM
|
|
first matches. If SYM never matches, it will be set to NULL;
|
|
either way, we have the right return value. */
|
|
|
|
for (sym = DICT_HASHED_BUCKET (dict, hash_index);
|
|
sym != NULL;
|
|
sym = sym->hash_next)
|
|
{
|
|
/* Warning: the order of arguments to compare matters! */
|
|
if (matches_name (SYMBOL_SEARCH_NAME (sym), name, NULL))
|
|
break;
|
|
}
|
|
|
|
DICT_ITERATOR_CURRENT (iterator) = sym;
|
|
return sym;
|
|
}
|
|
|
|
static struct symbol *
|
|
iter_match_next_hashed (const lookup_name_info &name,
|
|
struct dict_iterator *iterator)
|
|
{
|
|
const language_defn *lang = DICT_LANGUAGE (DICT_ITERATOR_DICT (iterator));
|
|
symbol_name_matcher_ftype *matches_name
|
|
= get_symbol_name_matcher (lang, name);
|
|
struct symbol *next;
|
|
|
|
for (next = DICT_ITERATOR_CURRENT (iterator)->hash_next;
|
|
next != NULL;
|
|
next = next->hash_next)
|
|
{
|
|
if (matches_name (SYMBOL_SEARCH_NAME (next), name, NULL))
|
|
break;
|
|
}
|
|
|
|
DICT_ITERATOR_CURRENT (iterator) = next;
|
|
|
|
return next;
|
|
}
|
|
|
|
/* Insert SYM into DICT. */
|
|
|
|
static void
|
|
insert_symbol_hashed (struct dictionary *dict,
|
|
struct symbol *sym)
|
|
{
|
|
unsigned int hash_index;
|
|
unsigned int hash;
|
|
struct symbol **buckets = DICT_HASHED_BUCKETS (dict);
|
|
|
|
/* We don't want to insert a symbol into a dictionary of a different
|
|
language. The two may not use the same hashing algorithm. */
|
|
gdb_assert (SYMBOL_LANGUAGE (sym) == DICT_LANGUAGE (dict)->la_language);
|
|
|
|
hash = search_name_hash (SYMBOL_LANGUAGE (sym), SYMBOL_SEARCH_NAME (sym));
|
|
hash_index = hash % DICT_HASHED_NBUCKETS (dict);
|
|
sym->hash_next = buckets[hash_index];
|
|
buckets[hash_index] = sym;
|
|
}
|
|
|
|
static int
|
|
size_hashed (const struct dictionary *dict)
|
|
{
|
|
return DICT_HASHED_NBUCKETS (dict);
|
|
}
|
|
|
|
/* Functions only for DICT_HASHED_EXPANDABLE. */
|
|
|
|
static void
|
|
free_hashed_expandable (struct dictionary *dict)
|
|
{
|
|
xfree (DICT_HASHED_BUCKETS (dict));
|
|
xfree (dict);
|
|
}
|
|
|
|
static void
|
|
add_symbol_hashed_expandable (struct dictionary *dict,
|
|
struct symbol *sym)
|
|
{
|
|
int nsyms = ++DICT_HASHED_EXPANDABLE_NSYMS (dict);
|
|
|
|
if (DICT_HASHTABLE_SIZE (nsyms) > DICT_HASHED_NBUCKETS (dict))
|
|
expand_hashtable (dict);
|
|
|
|
insert_symbol_hashed (dict, sym);
|
|
DICT_HASHED_EXPANDABLE_NSYMS (dict) = nsyms;
|
|
}
|
|
|
|
static int
|
|
size_hashed_expandable (const struct dictionary *dict)
|
|
{
|
|
return DICT_HASHED_EXPANDABLE_NSYMS (dict);
|
|
}
|
|
|
|
static void
|
|
expand_hashtable (struct dictionary *dict)
|
|
{
|
|
int old_nbuckets = DICT_HASHED_NBUCKETS (dict);
|
|
struct symbol **old_buckets = DICT_HASHED_BUCKETS (dict);
|
|
int new_nbuckets = 2 * old_nbuckets + 1;
|
|
struct symbol **new_buckets = XCNEWVEC (struct symbol *, new_nbuckets);
|
|
int i;
|
|
|
|
DICT_HASHED_NBUCKETS (dict) = new_nbuckets;
|
|
DICT_HASHED_BUCKETS (dict) = new_buckets;
|
|
|
|
for (i = 0; i < old_nbuckets; ++i)
|
|
{
|
|
struct symbol *sym, *next_sym;
|
|
|
|
sym = old_buckets[i];
|
|
if (sym != NULL)
|
|
{
|
|
for (next_sym = sym->hash_next;
|
|
next_sym != NULL;
|
|
next_sym = sym->hash_next)
|
|
{
|
|
insert_symbol_hashed (dict, sym);
|
|
sym = next_sym;
|
|
}
|
|
|
|
insert_symbol_hashed (dict, sym);
|
|
}
|
|
}
|
|
|
|
xfree (old_buckets);
|
|
}
|
|
|
|
/* See dictionary.h. */
|
|
|
|
unsigned int
|
|
default_search_name_hash (const char *string0)
|
|
{
|
|
/* The Ada-encoded version of a name P1.P2...Pn has either the form
|
|
P1__P2__...Pn<suffix> or _ada_P1__P2__...Pn<suffix> (where the Pi
|
|
are lower-cased identifiers). The <suffix> (which can be empty)
|
|
encodes additional information about the denoted entity. This
|
|
routine hashes such names to msymbol_hash_iw(Pn). It actually
|
|
does this for a superset of both valid Pi and of <suffix>, but
|
|
in other cases it simply returns msymbol_hash_iw(STRING0). */
|
|
|
|
const char *string;
|
|
unsigned int hash;
|
|
|
|
string = string0;
|
|
if (*string == '_')
|
|
{
|
|
if (startswith (string, "_ada_"))
|
|
string += 5;
|
|
else
|
|
return msymbol_hash_iw (string0);
|
|
}
|
|
|
|
hash = 0;
|
|
while (*string)
|
|
{
|
|
switch (*string)
|
|
{
|
|
case '$':
|
|
case '.':
|
|
case 'X':
|
|
if (string0 == string)
|
|
return msymbol_hash_iw (string0);
|
|
else
|
|
return hash;
|
|
case ' ':
|
|
case '(':
|
|
return msymbol_hash_iw (string0);
|
|
case '_':
|
|
if (string[1] == '_' && string != string0)
|
|
{
|
|
int c = string[2];
|
|
|
|
if ((c < 'a' || c > 'z') && c != 'O')
|
|
return hash;
|
|
hash = 0;
|
|
string += 2;
|
|
continue;
|
|
}
|
|
break;
|
|
case 'T':
|
|
/* Ignore "TKB" suffixes.
|
|
|
|
These are used by Ada for subprograms implementing a task body.
|
|
For instance for a task T inside package Pck, the name of the
|
|
subprogram implementing T's body is `pck__tTKB'. We need to
|
|
ignore the "TKB" suffix because searches for this task body
|
|
subprogram are going to be performed using `pck__t' (the encoded
|
|
version of the natural name `pck.t'). */
|
|
if (strcmp (string, "TKB") == 0)
|
|
return hash;
|
|
break;
|
|
}
|
|
|
|
hash = SYMBOL_HASH_NEXT (hash, *string);
|
|
string += 1;
|
|
}
|
|
return hash;
|
|
}
|
|
|
|
/* Functions for DICT_LINEAR and DICT_LINEAR_EXPANDABLE. */
|
|
|
|
static struct symbol *
|
|
iterator_first_linear (const struct dictionary *dict,
|
|
struct dict_iterator *iterator)
|
|
{
|
|
DICT_ITERATOR_DICT (iterator) = dict;
|
|
DICT_ITERATOR_INDEX (iterator) = 0;
|
|
return DICT_LINEAR_NSYMS (dict) ? DICT_LINEAR_SYM (dict, 0) : NULL;
|
|
}
|
|
|
|
static struct symbol *
|
|
iterator_next_linear (struct dict_iterator *iterator)
|
|
{
|
|
const struct dictionary *dict = DICT_ITERATOR_DICT (iterator);
|
|
|
|
if (++DICT_ITERATOR_INDEX (iterator) >= DICT_LINEAR_NSYMS (dict))
|
|
return NULL;
|
|
else
|
|
return DICT_LINEAR_SYM (dict, DICT_ITERATOR_INDEX (iterator));
|
|
}
|
|
|
|
static struct symbol *
|
|
iter_match_first_linear (const struct dictionary *dict,
|
|
const lookup_name_info &name,
|
|
struct dict_iterator *iterator)
|
|
{
|
|
DICT_ITERATOR_DICT (iterator) = dict;
|
|
DICT_ITERATOR_INDEX (iterator) = -1;
|
|
|
|
return iter_match_next_linear (name, iterator);
|
|
}
|
|
|
|
static struct symbol *
|
|
iter_match_next_linear (const lookup_name_info &name,
|
|
struct dict_iterator *iterator)
|
|
{
|
|
const struct dictionary *dict = DICT_ITERATOR_DICT (iterator);
|
|
const language_defn *lang = DICT_LANGUAGE (dict);
|
|
symbol_name_matcher_ftype *matches_name
|
|
= get_symbol_name_matcher (lang, name);
|
|
|
|
int i, nsyms = DICT_LINEAR_NSYMS (dict);
|
|
struct symbol *sym, *retval = NULL;
|
|
|
|
for (i = DICT_ITERATOR_INDEX (iterator) + 1; i < nsyms; ++i)
|
|
{
|
|
sym = DICT_LINEAR_SYM (dict, i);
|
|
|
|
if (matches_name (SYMBOL_SEARCH_NAME (sym), name, NULL))
|
|
{
|
|
retval = sym;
|
|
break;
|
|
}
|
|
}
|
|
|
|
DICT_ITERATOR_INDEX (iterator) = i;
|
|
|
|
return retval;
|
|
}
|
|
|
|
static int
|
|
size_linear (const struct dictionary *dict)
|
|
{
|
|
return DICT_LINEAR_NSYMS (dict);
|
|
}
|
|
|
|
/* Functions only for DICT_LINEAR_EXPANDABLE. */
|
|
|
|
static void
|
|
free_linear_expandable (struct dictionary *dict)
|
|
{
|
|
xfree (DICT_LINEAR_SYMS (dict));
|
|
xfree (dict);
|
|
}
|
|
|
|
|
|
static void
|
|
add_symbol_linear_expandable (struct dictionary *dict,
|
|
struct symbol *sym)
|
|
{
|
|
int nsyms = ++DICT_LINEAR_NSYMS (dict);
|
|
|
|
/* Do we have enough room? If not, grow it. */
|
|
if (nsyms > DICT_LINEAR_EXPANDABLE_CAPACITY (dict))
|
|
{
|
|
DICT_LINEAR_EXPANDABLE_CAPACITY (dict) *= 2;
|
|
DICT_LINEAR_SYMS (dict)
|
|
= XRESIZEVEC (struct symbol *, DICT_LINEAR_SYMS (dict),
|
|
DICT_LINEAR_EXPANDABLE_CAPACITY (dict));
|
|
}
|
|
|
|
DICT_LINEAR_SYM (dict, nsyms - 1) = sym;
|
|
}
|
|
|
|
/* Multi-language dictionary support. */
|
|
|
|
/* The structure describing a multi-language dictionary. */
|
|
|
|
struct multidictionary
|
|
{
|
|
/* An array of dictionaries, one per language. All dictionaries
|
|
must be of the same type. This should be free'd for expandable
|
|
dictionary types. */
|
|
struct dictionary **dictionaries;
|
|
|
|
/* The number of language dictionaries currently allocated.
|
|
Only used for expandable dictionaries. */
|
|
unsigned short n_allocated_dictionaries;
|
|
};
|
|
|
|
/* A hasher for enum language. Injecting this into std is a convenience
|
|
when using unordered_map with C++11. */
|
|
|
|
namespace std
|
|
{
|
|
template<> struct hash<enum language>
|
|
{
|
|
typedef enum language argument_type;
|
|
typedef std::size_t result_type;
|
|
|
|
result_type operator() (const argument_type &l) const noexcept
|
|
{
|
|
return static_cast<result_type> (l);
|
|
}
|
|
};
|
|
} /* namespace std */
|
|
|
|
/* A helper function to collate symbols on the pending list by language. */
|
|
|
|
static std::unordered_map<enum language, std::vector<symbol *>>
|
|
collate_pending_symbols_by_language (const struct pending *symbol_list)
|
|
{
|
|
std::unordered_map<enum language, std::vector<symbol *>> nsyms;
|
|
|
|
for (const pending *list_counter = symbol_list;
|
|
list_counter != nullptr; list_counter = list_counter->next)
|
|
{
|
|
for (int i = list_counter->nsyms - 1; i >= 0; --i)
|
|
{
|
|
enum language language = SYMBOL_LANGUAGE (list_counter->symbol[i]);
|
|
nsyms[language].push_back (list_counter->symbol[i]);
|
|
}
|
|
}
|
|
|
|
return nsyms;
|
|
}
|
|
|
|
/* See dictionary.h. */
|
|
|
|
struct multidictionary *
|
|
mdict_create_hashed (struct obstack *obstack,
|
|
const struct pending *symbol_list)
|
|
{
|
|
struct multidictionary *retval
|
|
= XOBNEW (obstack, struct multidictionary);
|
|
std::unordered_map<enum language, std::vector<symbol *>> nsyms
|
|
= collate_pending_symbols_by_language (symbol_list);
|
|
|
|
/* Loop over all languages and create/populate dictionaries. */
|
|
retval->dictionaries
|
|
= XOBNEWVEC (obstack, struct dictionary *, nsyms.size ());
|
|
retval->n_allocated_dictionaries = nsyms.size ();
|
|
|
|
int idx = 0;
|
|
for (const auto &pair : nsyms)
|
|
{
|
|
enum language language = pair.first;
|
|
std::vector<symbol *> symlist = pair.second;
|
|
|
|
retval->dictionaries[idx++]
|
|
= dict_create_hashed (obstack, language, symlist);
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
/* See dictionary.h. */
|
|
|
|
struct multidictionary *
|
|
mdict_create_hashed_expandable (enum language language)
|
|
{
|
|
struct multidictionary *retval = XNEW (struct multidictionary);
|
|
|
|
/* We have no symbol list to populate, but we create an empty
|
|
dictionary of the requested language to populate later. */
|
|
retval->n_allocated_dictionaries = 1;
|
|
retval->dictionaries = XNEW (struct dictionary *);
|
|
retval->dictionaries[0] = dict_create_hashed_expandable (language);
|
|
|
|
return retval;
|
|
}
|
|
|
|
/* See dictionary.h. */
|
|
|
|
struct multidictionary *
|
|
mdict_create_linear (struct obstack *obstack,
|
|
const struct pending *symbol_list)
|
|
{
|
|
struct multidictionary *retval
|
|
= XOBNEW (obstack, struct multidictionary);
|
|
std::unordered_map<enum language, std::vector<symbol *>> nsyms
|
|
= collate_pending_symbols_by_language (symbol_list);
|
|
|
|
/* Loop over all languages and create/populate dictionaries. */
|
|
retval->dictionaries
|
|
= XOBNEWVEC (obstack, struct dictionary *, nsyms.size ());
|
|
retval->n_allocated_dictionaries = nsyms.size ();
|
|
|
|
int idx = 0;
|
|
for (const auto &pair : nsyms)
|
|
{
|
|
enum language language = pair.first;
|
|
std::vector<symbol *> symlist = pair.second;
|
|
|
|
retval->dictionaries[idx++]
|
|
= dict_create_linear (obstack, language, symlist);
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
/* See dictionary.h. */
|
|
|
|
struct multidictionary *
|
|
mdict_create_linear_expandable (enum language language)
|
|
{
|
|
struct multidictionary *retval = XNEW (struct multidictionary);
|
|
|
|
/* We have no symbol list to populate, but we create an empty
|
|
dictionary to populate later. */
|
|
retval->n_allocated_dictionaries = 1;
|
|
retval->dictionaries = XNEW (struct dictionary *);
|
|
retval->dictionaries[0] = dict_create_linear_expandable (language);
|
|
|
|
return retval;
|
|
}
|
|
|
|
/* See dictionary.h. */
|
|
|
|
void
|
|
mdict_free (struct multidictionary *mdict)
|
|
{
|
|
/* Grab the type of dictionary being used. */
|
|
enum dict_type type = mdict->dictionaries[0]->vector->type;
|
|
|
|
/* Loop over all dictionaries and free them. */
|
|
for (unsigned short idx = 0; idx < mdict->n_allocated_dictionaries; ++idx)
|
|
dict_free (mdict->dictionaries[idx]);
|
|
|
|
/* Free the dictionary list, if needed. */
|
|
switch (type)
|
|
{
|
|
case DICT_HASHED:
|
|
case DICT_LINEAR:
|
|
/* Memory was allocated on an obstack when created. */
|
|
break;
|
|
|
|
case DICT_HASHED_EXPANDABLE:
|
|
case DICT_LINEAR_EXPANDABLE:
|
|
xfree (mdict->dictionaries);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Helper function to find the dictionary associated with LANGUAGE
|
|
or NULL if there is no dictionary of that language. */
|
|
|
|
static struct dictionary *
|
|
find_language_dictionary (const struct multidictionary *mdict,
|
|
enum language language)
|
|
{
|
|
for (unsigned short idx = 0; idx < mdict->n_allocated_dictionaries; ++idx)
|
|
{
|
|
if (DICT_LANGUAGE (mdict->dictionaries[idx])->la_language == language)
|
|
return mdict->dictionaries[idx];
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
/* Create a new language dictionary for LANGUAGE and add it to the
|
|
multidictionary MDICT's list of dictionaries. If MDICT is not
|
|
based on expandable dictionaries, this function throws an
|
|
internal error. */
|
|
|
|
static struct dictionary *
|
|
create_new_language_dictionary (struct multidictionary *mdict,
|
|
enum language language)
|
|
{
|
|
struct dictionary *retval = nullptr;
|
|
|
|
/* We use the first dictionary entry to decide what create function
|
|
to call. Not optimal but sufficient. */
|
|
gdb_assert (mdict->dictionaries[0] != nullptr);
|
|
switch (mdict->dictionaries[0]->vector->type)
|
|
{
|
|
case DICT_HASHED:
|
|
case DICT_LINEAR:
|
|
internal_error (__FILE__, __LINE__,
|
|
_("create_new_language_dictionary: attempted to expand "
|
|
"non-expandable multidictionary"));
|
|
|
|
case DICT_HASHED_EXPANDABLE:
|
|
retval = dict_create_hashed_expandable (language);
|
|
break;
|
|
|
|
case DICT_LINEAR_EXPANDABLE:
|
|
retval = dict_create_linear_expandable (language);
|
|
break;
|
|
}
|
|
|
|
/* Grow the dictionary vector and save the new dictionary. */
|
|
mdict->dictionaries
|
|
= (struct dictionary **) xrealloc (mdict->dictionaries,
|
|
(++mdict->n_allocated_dictionaries
|
|
* sizeof (struct dictionary *)));
|
|
mdict->dictionaries[mdict->n_allocated_dictionaries - 1] = retval;
|
|
|
|
return retval;
|
|
}
|
|
|
|
/* See dictionary.h. */
|
|
|
|
void
|
|
mdict_add_symbol (struct multidictionary *mdict, struct symbol *sym)
|
|
{
|
|
struct dictionary *dict
|
|
= find_language_dictionary (mdict, SYMBOL_LANGUAGE (sym));
|
|
|
|
if (dict == nullptr)
|
|
{
|
|
/* SYM is of a new language that we haven't previously seen.
|
|
Create a new dictionary for it. */
|
|
dict = create_new_language_dictionary (mdict, SYMBOL_LANGUAGE (sym));
|
|
}
|
|
|
|
dict_add_symbol (dict, sym);
|
|
}
|
|
|
|
/* See dictionary.h. */
|
|
|
|
void
|
|
mdict_add_pending (struct multidictionary *mdict,
|
|
const struct pending *symbol_list)
|
|
{
|
|
std::unordered_map<enum language, std::vector<symbol *>> nsyms
|
|
= collate_pending_symbols_by_language (symbol_list);
|
|
|
|
for (const auto &pair : nsyms)
|
|
{
|
|
enum language language = pair.first;
|
|
std::vector<symbol *> symlist = pair.second;
|
|
struct dictionary *dict = find_language_dictionary (mdict, language);
|
|
|
|
if (dict == nullptr)
|
|
{
|
|
/* The language was not previously seen. Create a new dictionary
|
|
for it. */
|
|
dict = create_new_language_dictionary (mdict, language);
|
|
}
|
|
|
|
dict_add_pending (dict, symlist);
|
|
}
|
|
}
|
|
|
|
/* See dictionary.h. */
|
|
|
|
struct symbol *
|
|
mdict_iterator_first (const multidictionary *mdict,
|
|
struct mdict_iterator *miterator)
|
|
{
|
|
miterator->mdict = mdict;
|
|
miterator->current_idx = 0;
|
|
|
|
for (unsigned short idx = miterator->current_idx;
|
|
idx < mdict->n_allocated_dictionaries; ++idx)
|
|
{
|
|
struct symbol *result
|
|
= dict_iterator_first (mdict->dictionaries[idx], &miterator->iterator);
|
|
|
|
if (result != nullptr)
|
|
{
|
|
miterator->current_idx = idx;
|
|
return result;
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
/* See dictionary.h. */
|
|
|
|
struct symbol *
|
|
mdict_iterator_next (struct mdict_iterator *miterator)
|
|
{
|
|
struct symbol *result = dict_iterator_next (&miterator->iterator);
|
|
|
|
if (result != nullptr)
|
|
return result;
|
|
|
|
/* The current dictionary had no matches -- move to the next
|
|
dictionary, if any. */
|
|
for (unsigned short idx = ++miterator->current_idx;
|
|
idx < miterator->mdict->n_allocated_dictionaries; ++idx)
|
|
{
|
|
result
|
|
= dict_iterator_first (miterator->mdict->dictionaries[idx],
|
|
&miterator->iterator);
|
|
if (result != nullptr)
|
|
{
|
|
miterator->current_idx = idx;
|
|
return result;
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
/* See dictionary.h. */
|
|
|
|
struct symbol *
|
|
mdict_iter_match_first (const struct multidictionary *mdict,
|
|
const lookup_name_info &name,
|
|
struct mdict_iterator *miterator)
|
|
{
|
|
miterator->mdict = mdict;
|
|
miterator->current_idx = 0;
|
|
|
|
for (unsigned short idx = miterator->current_idx;
|
|
idx < mdict->n_allocated_dictionaries; ++idx)
|
|
{
|
|
struct symbol *result
|
|
= dict_iter_match_first (mdict->dictionaries[idx], name,
|
|
&miterator->iterator);
|
|
|
|
if (result != nullptr)
|
|
return result;
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
/* See dictionary.h. */
|
|
|
|
struct symbol *
|
|
mdict_iter_match_next (const lookup_name_info &name,
|
|
struct mdict_iterator *miterator)
|
|
{
|
|
/* Search the current dictionary. */
|
|
struct symbol *result = dict_iter_match_next (name, &miterator->iterator);
|
|
|
|
if (result != nullptr)
|
|
return result;
|
|
|
|
/* The current dictionary had no matches -- move to the next
|
|
dictionary, if any. */
|
|
for (unsigned short idx = ++miterator->current_idx;
|
|
idx < miterator->mdict->n_allocated_dictionaries; ++idx)
|
|
{
|
|
result
|
|
= dict_iter_match_first (miterator->mdict->dictionaries[idx],
|
|
name, &miterator->iterator);
|
|
if (result != nullptr)
|
|
{
|
|
miterator->current_idx = idx;
|
|
return result;
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
/* See dictionary.h. */
|
|
|
|
int
|
|
mdict_size (const struct multidictionary *mdict)
|
|
{
|
|
int size = 0;
|
|
|
|
for (unsigned short idx = 0; idx < mdict->n_allocated_dictionaries; ++idx)
|
|
size += dict_size (mdict->dictionaries[idx]);
|
|
|
|
return size;
|
|
}
|
|
|
|
/* See dictionary.h. */
|
|
|
|
bool
|
|
mdict_empty (const struct multidictionary *mdict)
|
|
{
|
|
for (unsigned short idx = 0; idx < mdict->n_allocated_dictionaries; ++idx)
|
|
{
|
|
if (!dict_empty (mdict->dictionaries[idx]))
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|