28457744c3
Add support for qom types provided by modules. For starters use a manually maintained list which maps qom type to module and prefix. Two load functions are added: One to load the module for a specific type, and one to load all modules (needed for object/device lists as printed by -- for example -- qemu -device help). Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20200624131045.14512-2-kraxel@redhat.com
77 lines
2.8 KiB
C
77 lines
2.8 KiB
C
/*
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* QEMU Module Infrastructure
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*
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* Copyright IBM, Corp. 2009
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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*/
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#ifndef QEMU_MODULE_H
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#define QEMU_MODULE_H
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#define DSO_STAMP_FUN glue(qemu_stamp, CONFIG_STAMP)
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#define DSO_STAMP_FUN_STR stringify(DSO_STAMP_FUN)
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#ifdef BUILD_DSO
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void DSO_STAMP_FUN(void);
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/* This is a dummy symbol to identify a loaded DSO as a QEMU module, so we can
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* distinguish "version mismatch" from "not a QEMU module", when the stamp
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* check fails during module loading */
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void qemu_module_dummy(void);
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#define module_init(function, type) \
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static void __attribute__((constructor)) do_qemu_init_ ## function(void) \
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{ \
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register_dso_module_init(function, type); \
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}
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#else
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/* This should not be used directly. Use block_init etc. instead. */
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#define module_init(function, type) \
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static void __attribute__((constructor)) do_qemu_init_ ## function(void) \
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{ \
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register_module_init(function, type); \
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}
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#endif
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typedef enum {
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MODULE_INIT_MIGRATION,
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MODULE_INIT_BLOCK,
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MODULE_INIT_OPTS,
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MODULE_INIT_QOM,
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MODULE_INIT_TRACE,
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MODULE_INIT_XEN_BACKEND,
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MODULE_INIT_LIBQOS,
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MODULE_INIT_FUZZ_TARGET,
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MODULE_INIT_MAX
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} module_init_type;
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#define block_init(function) module_init(function, MODULE_INIT_BLOCK)
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#define opts_init(function) module_init(function, MODULE_INIT_OPTS)
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#define type_init(function) module_init(function, MODULE_INIT_QOM)
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#define trace_init(function) module_init(function, MODULE_INIT_TRACE)
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#define xen_backend_init(function) module_init(function, \
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MODULE_INIT_XEN_BACKEND)
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#define libqos_init(function) module_init(function, MODULE_INIT_LIBQOS)
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#define fuzz_target_init(function) module_init(function, \
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MODULE_INIT_FUZZ_TARGET)
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#define migration_init(function) module_init(function, MODULE_INIT_MIGRATION)
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#define block_module_load_one(lib) module_load_one("block-", lib)
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#define ui_module_load_one(lib) module_load_one("ui-", lib)
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#define audio_module_load_one(lib) module_load_one("audio-", lib)
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void register_module_init(void (*fn)(void), module_init_type type);
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void register_dso_module_init(void (*fn)(void), module_init_type type);
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void module_call_init(module_init_type type);
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bool module_load_one(const char *prefix, const char *lib_name);
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void module_load_qom_one(const char *type);
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void module_load_qom_all(void);
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#endif
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