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3666a048 | 1 | /* Copyright (C) 2002-2021 Free Software Foundation, Inc. |
bf4c19f7 YQ |
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" | |
799cdc37 | 19 | #include "dll.h" |
bf4c19f7 | 20 | |
c9cb8905 | 21 | #include <algorithm> |
bf4c19f7 | 22 | |
40ed484e DE |
23 | /* An "unspecified" CORE_ADDR, for match_dll. */ |
24 | #define UNSPECIFIED_CORE_ADDR (~(CORE_ADDR) 0) | |
25 | ||
d171632f | 26 | /* Record a newly loaded DLL at BASE_ADDR for the current process. */ |
bf4c19f7 YQ |
27 | |
28 | void | |
29 | loaded_dll (const char *name, CORE_ADDR base_addr) | |
30 | { | |
d171632f TBA |
31 | loaded_dll (current_process (), name, base_addr); |
32 | } | |
33 | ||
34 | /* Record a newly loaded DLL at BASE_ADDR for PROC. */ | |
35 | ||
36 | void | |
37 | loaded_dll (process_info *proc, const char *name, CORE_ADDR base_addr) | |
38 | { | |
39 | gdb_assert (proc != nullptr); | |
40 | proc->all_dlls.emplace_back (name != nullptr ? name : "", base_addr); | |
41 | proc->dlls_changed = true; | |
bf4c19f7 YQ |
42 | } |
43 | ||
d171632f TBA |
44 | /* Record that the DLL with NAME and BASE_ADDR has been unloaded |
45 | from the current process. */ | |
bf4c19f7 YQ |
46 | |
47 | void | |
48 | unloaded_dll (const char *name, CORE_ADDR base_addr) | |
49 | { | |
d171632f TBA |
50 | unloaded_dll (current_process (), name, base_addr); |
51 | } | |
52 | ||
53 | /* Record that the DLL with NAME and BASE_ADDR has been unloaded | |
54 | from PROC. */ | |
55 | ||
56 | void | |
57 | unloaded_dll (process_info *proc, const char *name, CORE_ADDR base_addr) | |
58 | { | |
59 | gdb_assert (proc != nullptr); | |
c9cb8905 SM |
60 | auto pred = [&] (const dll_info &dll) |
61 | { | |
62 | if (base_addr != UNSPECIFIED_CORE_ADDR | |
63 | && base_addr == dll.base_addr) | |
64 | return true; | |
65 | ||
66 | if (name != NULL && dll.name == name) | |
67 | return true; | |
bf4c19f7 | 68 | |
c9cb8905 SM |
69 | return false; |
70 | }; | |
bf4c19f7 | 71 | |
d171632f TBA |
72 | auto iter = std::find_if (proc->all_dlls.begin (), proc->all_dlls.end (), |
73 | pred); | |
bf4c19f7 | 74 | |
d171632f | 75 | if (iter == proc->all_dlls.end ()) |
bf4c19f7 YQ |
76 | /* For some inferiors we might get unloaded_dll events without having |
77 | a corresponding loaded_dll. In that case, the dll cannot be found | |
78 | in ALL_DLL, and there is nothing further for us to do. | |
79 | ||
80 | This has been observed when running 32bit executables on Windows64 | |
81 | (i.e. through WOW64, the interface between the 32bits and 64bits | |
82 | worlds). In that case, the inferior always does some strange | |
83 | unloading of unnamed dll. */ | |
84 | return; | |
85 | else | |
86 | { | |
87 | /* DLL has been found so remove the entry and free associated | |
dda83cd7 | 88 | resources. */ |
d171632f TBA |
89 | proc->all_dlls.erase (iter); |
90 | proc->dlls_changed = true; | |
bf4c19f7 YQ |
91 | } |
92 | } | |
93 | ||
94 | void | |
95 | clear_dlls (void) | |
96 | { | |
d171632f TBA |
97 | for_each_process ([] (process_info *proc) |
98 | { | |
99 | proc->all_dlls.clear (); | |
100 | }); | |
bf4c19f7 | 101 | } |