aboutsummaryrefslogtreecommitdiff
path: root/include/qemu/module.h
blob: 9121a475c1b63f77e7bf021088927b72f161244a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
/*
 * QEMU Module Infrastructure
 *
 * Copyright IBM, Corp. 2009
 *
 * Authors:
 *  Anthony Liguori   <aliguori@us.ibm.com>
 *
 * This work is licensed under the terms of the GNU GPL, version 2.  See
 * the COPYING file in the top-level directory.
 *
 */

#ifndef QEMU_MODULE_H
#define QEMU_MODULE_H


#define DSO_STAMP_FUN         glue(qemu_stamp, CONFIG_STAMP)
#define DSO_STAMP_FUN_STR     stringify(DSO_STAMP_FUN)

#ifdef BUILD_DSO
void DSO_STAMP_FUN(void);
/* This is a dummy symbol to identify a loaded DSO as a QEMU module, so we can
 * distinguish "version mismatch" from "not a QEMU module", when the stamp
 * check fails during module loading */
void qemu_module_dummy(void);

#define module_init(function, type)                                         \
static void __attribute__((constructor)) do_qemu_init_ ## function(void)    \
{                                                                           \
    register_dso_module_init(function, type);                               \
}
#else
/* This should not be used directly.  Use block_init etc. instead.  */
#define module_init(function, type)                                         \
static void __attribute__((constructor)) do_qemu_init_ ## function(void)    \
{                                                                           \
    register_module_init(function, type);                                   \
}
#endif

typedef enum {
    MODULE_INIT_MIGRATION,
    MODULE_INIT_BLOCK,
    MODULE_INIT_OPTS,
    MODULE_INIT_QOM,
    MODULE_INIT_TRACE,
    MODULE_INIT_XEN_BACKEND,
    MODULE_INIT_LIBQOS,
    MODULE_INIT_FUZZ_TARGET,
    MODULE_INIT_MAX
} module_init_type;

#define block_init(function) module_init(function, MODULE_INIT_BLOCK)
#define opts_init(function) module_init(function, MODULE_INIT_OPTS)
#define type_init(function) module_init(function, MODULE_INIT_QOM)
#define trace_init(function) module_init(function, MODULE_INIT_TRACE)
#define xen_backend_init(function) module_init(function, \
                                               MODULE_INIT_XEN_BACKEND)
#define libqos_init(function) module_init(function, MODULE_INIT_LIBQOS)
#define fuzz_target_init(function) module_init(function, \
                                               MODULE_INIT_FUZZ_TARGET)
#define migration_init(function) module_init(function, MODULE_INIT_MIGRATION)
#define block_module_load_one(lib) module_load_one("block-", lib)
#define ui_module_load_one(lib) module_load_one("ui-", lib)
#define audio_module_load_one(lib) module_load_one("audio-", lib)

void register_module_init(void (*fn)(void), module_init_type type);
void register_dso_module_init(void (*fn)(void), module_init_type type);

void module_call_init(module_init_type type);
bool module_load_one(const char *prefix, const char *lib_name);
void module_load_qom_one(const char *type);
void module_load_qom_all(void);

#endif