1 | /* |
2 | * QEMU Module Infrastructure |
3 | * |
4 | * Copyright IBM, Corp. 2009 |
5 | * |
6 | * Authors: |
7 | * Anthony Liguori <aliguori@us.ibm.com> |
8 | * |
9 | * This work is licensed under the terms of the GNU GPL, version 2. See |
10 | * the COPYING file in the top-level directory. |
11 | * |
12 | */ |
13 | |
14 | #ifndef QEMU_MODULE_H |
15 | #define QEMU_MODULE_H |
16 | |
17 | |
18 | #define DSO_STAMP_FUN glue(qemu_stamp, CONFIG_STAMP) |
19 | #define DSO_STAMP_FUN_STR stringify(DSO_STAMP_FUN) |
20 | |
21 | #ifdef BUILD_DSO |
22 | void DSO_STAMP_FUN(void); |
23 | /* This is a dummy symbol to identify a loaded DSO as a QEMU module, so we can |
24 | * distinguish "version mismatch" from "not a QEMU module", when the stamp |
25 | * check fails during module loading */ |
26 | void qemu_module_dummy(void); |
27 | |
28 | #define module_init(function, type) \ |
29 | static void __attribute__((constructor)) do_qemu_init_ ## function(void) \ |
30 | { \ |
31 | register_dso_module_init(function, type); \ |
32 | } |
33 | #else |
34 | /* This should not be used directly. Use block_init etc. instead. */ |
35 | #define module_init(function, type) \ |
36 | static void __attribute__((constructor)) do_qemu_init_ ## function(void) \ |
37 | { \ |
38 | register_module_init(function, type); \ |
39 | } |
40 | #endif |
41 | |
42 | typedef enum { |
43 | MODULE_INIT_BLOCK, |
44 | MODULE_INIT_OPTS, |
45 | MODULE_INIT_QOM, |
46 | MODULE_INIT_TRACE, |
47 | MODULE_INIT_XEN_BACKEND, |
48 | MODULE_INIT_LIBQOS, |
49 | MODULE_INIT_MAX |
50 | } module_init_type; |
51 | |
52 | #define block_init(function) module_init(function, MODULE_INIT_BLOCK) |
53 | #define opts_init(function) module_init(function, MODULE_INIT_OPTS) |
54 | #define type_init(function) module_init(function, MODULE_INIT_QOM) |
55 | #define trace_init(function) module_init(function, MODULE_INIT_TRACE) |
56 | #define xen_backend_init(function) module_init(function, \ |
57 | MODULE_INIT_XEN_BACKEND) |
58 | #define libqos_init(function) module_init(function, MODULE_INIT_LIBQOS) |
59 | |
60 | #define block_module_load_one(lib) module_load_one("block-", lib) |
61 | #define ui_module_load_one(lib) module_load_one("ui-", lib) |
62 | #define audio_module_load_one(lib) module_load_one("audio-", lib) |
63 | |
64 | void register_module_init(void (*fn)(void), module_init_type type); |
65 | void register_dso_module_init(void (*fn)(void), module_init_type type); |
66 | |
67 | void module_call_init(module_init_type type); |
68 | bool module_load_one(const char *prefix, const char *lib_name); |
69 | |
70 | #endif |
71 | |