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dll.c
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1 /* Copyright (C) 2002-2018 Free Software Foundation, Inc.
2
3 This file is part of GDB.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17
18 #include "server.h"
19 #include "dll.h"
20
21 #include <algorithm>
22
23 /* An "unspecified" CORE_ADDR, for match_dll. */
24 #define UNSPECIFIED_CORE_ADDR (~(CORE_ADDR) 0)
25
26 std::list<dll_info> all_dlls;
27 int dlls_changed;
28
29 /* Record a newly loaded DLL at BASE_ADDR. */
30
31 void
32 loaded_dll (const char *name, CORE_ADDR base_addr)
33 {
34 all_dlls.emplace_back (name != NULL ? name : "", base_addr);
35 dlls_changed = 1;
36 }
37
38 /* Record that the DLL with NAME and BASE_ADDR has been unloaded. */
39
40 void
41 unloaded_dll (const char *name, CORE_ADDR base_addr)
42 {
43 auto pred = [&] (const dll_info &dll)
44 {
45 if (base_addr != UNSPECIFIED_CORE_ADDR
46 && base_addr == dll.base_addr)
47 return true;
48
49 if (name != NULL && dll.name == name)
50 return true;
51
52 return false;
53 };
54
55 auto iter = std::find_if (all_dlls.begin (), all_dlls.end (), pred);
56
57 if (iter == all_dlls.end ())
58 /* For some inferiors we might get unloaded_dll events without having
59 a corresponding loaded_dll. In that case, the dll cannot be found
60 in ALL_DLL, and there is nothing further for us to do.
61
62 This has been observed when running 32bit executables on Windows64
63 (i.e. through WOW64, the interface between the 32bits and 64bits
64 worlds). In that case, the inferior always does some strange
65 unloading of unnamed dll. */
66 return;
67 else
68 {
69 /* DLL has been found so remove the entry and free associated
70 resources. */
71 all_dlls.erase (iter);
72 dlls_changed = 1;
73 }
74 }
75
76 void
77 clear_dlls (void)
78 {
79 all_dlls.clear ();
80 }
CORE_ADDR
bfd_vma CORE_ADDR
Definition: common-types.h:41
clear_dlls
void clear_dlls(void)
Definition: dll.c:77
name
const char * name
Definition: tracepoint.c:180
dlls_changed
int dlls_changed
Definition: dll.c:27
unloaded_dll
void unloaded_dll(const char *name, CORE_ADDR base_addr)
Definition: dll.c:41
server.h
dll_info
Definition: dll.h:23
all_dlls
std::list< dll_info > all_dlls
Definition: dll.c:26
loaded_dll
void loaded_dll(const char *name, CORE_ADDR base_addr)
Definition: dll.c:32
dll.h
UNSPECIFIED_CORE_ADDR
#define UNSPECIFIED_CORE_ADDR
Definition: dll.c:24