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114 lines
3.1 KiB
C
114 lines
3.1 KiB
C
/* Copyright (C) 2002-2016 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 "server.h"
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#include "dll.h"
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#define get_dll(inf) ((struct dll_info *)(inf))
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/* An "unspecified" CORE_ADDR, for match_dll. */
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#define UNSPECIFIED_CORE_ADDR (~(CORE_ADDR) 0)
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struct inferior_list all_dlls;
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int dlls_changed;
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static void
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free_one_dll (struct inferior_list_entry *inf)
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{
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struct dll_info *dll = get_dll (inf);
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if (dll->name != NULL)
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free (dll->name);
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free (dll);
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}
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/* Find a DLL with the same name and/or base address. A NULL name in
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the key is ignored; so is an all-ones base address. */
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static int
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match_dll (struct inferior_list_entry *inf, void *arg)
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{
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struct dll_info *iter = (struct dll_info *) inf;
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struct dll_info *key = (struct dll_info *) arg;
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if (key->base_addr != UNSPECIFIED_CORE_ADDR
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&& iter->base_addr == key->base_addr)
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return 1;
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else if (key->name != NULL
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&& iter->name != NULL
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&& strcmp (key->name, iter->name) == 0)
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return 1;
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return 0;
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}
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/* Record a newly loaded DLL at BASE_ADDR. */
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void
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loaded_dll (const char *name, CORE_ADDR base_addr)
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{
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struct dll_info *new_dll = XCNEW (struct dll_info);
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new_dll->entry.id = minus_one_ptid;
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new_dll->name = xstrdup (name);
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new_dll->base_addr = base_addr;
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add_inferior_to_list (&all_dlls, &new_dll->entry);
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dlls_changed = 1;
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}
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/* Record that the DLL with NAME and BASE_ADDR has been unloaded. */
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void
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unloaded_dll (const char *name, CORE_ADDR base_addr)
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{
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struct dll_info *dll;
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struct dll_info key_dll;
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/* Be careful not to put the key DLL in any list. */
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key_dll.name = (char *) name;
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key_dll.base_addr = base_addr;
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dll = (struct dll_info *) find_inferior (&all_dlls, match_dll, &key_dll);
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if (dll == NULL)
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/* For some inferiors we might get unloaded_dll events without having
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a corresponding loaded_dll. In that case, the dll cannot be found
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in ALL_DLL, and there is nothing further for us to do.
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This has been observed when running 32bit executables on Windows64
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(i.e. through WOW64, the interface between the 32bits and 64bits
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worlds). In that case, the inferior always does some strange
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unloading of unnamed dll. */
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return;
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else
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{
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/* DLL has been found so remove the entry and free associated
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resources. */
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remove_inferior (&all_dlls, &dll->entry);
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free_one_dll (&dll->entry);
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dlls_changed = 1;
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}
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}
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void
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clear_dlls (void)
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{
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for_each_inferior (&all_dlls, free_one_dll);
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clear_inferior_list (&all_dlls);
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}
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