| /* DWARF 2 abbrev table cache |
| |
| Copyright (C) 2022-2024 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include "dwarf2/abbrev-cache.h" |
| |
| /* Hash function for an abbrev table. */ |
| |
| hashval_t |
| abbrev_cache::hash_table (const void *item) |
| { |
| const struct abbrev_table *table = (const struct abbrev_table *) item; |
| return to_underlying (table->sect_off); |
| } |
| |
| /* Comparison function for abbrev table. */ |
| |
| int |
| abbrev_cache::eq_table (const void *lhs, const void *rhs) |
| { |
| const struct abbrev_table *l_table = (const struct abbrev_table *) lhs; |
| const search_key *key = (const search_key *) rhs; |
| return (l_table->section == key->section |
| && l_table->sect_off == key->offset); |
| } |
| |
| abbrev_cache::abbrev_cache () |
| : m_tables (htab_create_alloc (20, hash_table, eq_table, |
| htab_delete_entry<abbrev_table>, |
| xcalloc, xfree)) |
| { |
| } |
| |
| void |
| abbrev_cache::add (abbrev_table_up table) |
| { |
| /* We allow this as a convenience to the caller. */ |
| if (table == nullptr) |
| return; |
| |
| search_key key = { table->section, table->sect_off }; |
| void **slot = htab_find_slot_with_hash (m_tables.get (), &key, |
| to_underlying (table->sect_off), |
| INSERT); |
| /* If this one already existed, then it should have been reused. */ |
| gdb_assert (*slot == nullptr); |
| *slot = (void *) table.release (); |
| } |