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https://gitlab.com/qemu-project/qemu
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modules: generate modinfo.c
Add script to generate C source with a small database containing the module meta-data. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Jose R. Ziviani <jziviani@suse.de> Message-Id: <20210624103836.2382472-4-kraxel@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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@ -134,4 +134,21 @@ void module_load_qom_all(void);
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*/
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*/
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#define module_opts(name) modinfo(opts, name)
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#define module_opts(name) modinfo(opts, name)
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/*
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* module info database
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*
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* scripts/modinfo-generate.c will build this using the data collected
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* by scripts/modinfo-collect.py
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*/
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typedef struct QemuModinfo QemuModinfo;
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struct QemuModinfo {
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const char *name;
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const char *arch;
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const char **objs;
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const char **deps;
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const char **opts;
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};
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extern const QemuModinfo qemu_modinfo[];
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void module_init_info(const QemuModinfo *info);
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#endif
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#endif
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13
meson.build
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meson.build
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@ -2242,6 +2242,7 @@ subdir('tests/qtest/fuzz')
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########################
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########################
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modinfo_collect = find_program('scripts/modinfo-collect.py')
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modinfo_collect = find_program('scripts/modinfo-collect.py')
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modinfo_generate = find_program('scripts/modinfo-generate.py')
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modinfo_files = []
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modinfo_files = []
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block_mods = []
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block_mods = []
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@ -2267,7 +2268,6 @@ foreach d, list : modules
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output: d + '-' + m + '.modinfo',
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output: d + '-' + m + '.modinfo',
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input: module_ss.sources(),
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input: module_ss.sources(),
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capture: true,
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capture: true,
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build_by_default: true, # to be removed when added to a target
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command: [modinfo_collect, '@INPUT@'])
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command: [modinfo_collect, '@INPUT@'])
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endif
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endif
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else
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else
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@ -2280,6 +2280,17 @@ foreach d, list : modules
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endforeach
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endforeach
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endforeach
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endforeach
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if enable_modules
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modinfo_src = custom_target('modinfo.c',
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output: 'modinfo.c',
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input: modinfo_files,
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command: [modinfo_generate, '@INPUT@'],
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capture: true)
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modinfo_lib = static_library('modinfo', modinfo_src)
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modinfo_dep = declare_dependency(link_whole: modinfo_lib)
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softmmu_ss.add(modinfo_dep)
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endif
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nm = find_program('nm')
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nm = find_program('nm')
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undefsym = find_program('scripts/undefsym.py')
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undefsym = find_program('scripts/undefsym.py')
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block_syms = custom_target('block.syms', output: 'block.syms',
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block_syms = custom_target('block.syms', output: 'block.syms',
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84
scripts/modinfo-generate.py
Executable file
84
scripts/modinfo-generate.py
Executable file
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@ -0,0 +1,84 @@
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#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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import os
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import sys
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def print_array(name, values):
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if len(values) == 0:
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return
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list = ", ".join(values)
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print(" .%s = ((const char*[]){ %s, NULL })," % (name, list))
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def parse_line(line):
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kind = ""
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data = ""
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get_kind = False
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get_data = False
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for item in line.split():
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if item == "MODINFO_START":
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get_kind = True
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continue
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if item.startswith("MODINFO_END"):
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get_data = False
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continue
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if get_kind:
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kind = item
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get_kind = False
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get_data = True
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continue
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if get_data:
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data += " " + item
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continue
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return (kind, data)
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def generate(name, lines):
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arch = ""
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objs = []
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deps = []
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opts = []
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for line in lines:
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if line.find("MODINFO_START") != -1:
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(kind, data) = parse_line(line)
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if kind == 'obj':
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objs.append(data)
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elif kind == 'dep':
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deps.append(data)
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elif kind == 'opts':
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opts.append(data)
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elif kind == 'arch':
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arch = data;
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else:
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print("unknown:", kind)
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exit(1)
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print(" .name = \"%s\"," % name)
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if arch != "":
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print(" .arch = %s," % arch)
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print_array("objs", objs)
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print_array("deps", deps)
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print_array("opts", opts)
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print("},{");
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def print_pre():
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print("/* generated by scripts/modinfo-generate.py */")
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print("#include \"qemu/osdep.h\"")
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print("#include \"qemu/module.h\"")
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print("const QemuModinfo qemu_modinfo[] = {{")
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def print_post():
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print(" /* end of list */")
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print("}};")
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def main(args):
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print_pre()
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for modinfo in args:
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with open(modinfo) as f:
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lines = f.readlines()
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print(" /* %s */" % modinfo)
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(basename, ext) = os.path.splitext(modinfo)
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generate(basename, lines)
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print_post()
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if __name__ == "__main__":
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main(sys.argv[1:])
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@ -2755,6 +2755,10 @@ void qemu_init(int argc, char **argv, char **envp)
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error_init(argv[0]);
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error_init(argv[0]);
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qemu_init_exec_dir(argv[0]);
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qemu_init_exec_dir(argv[0]);
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#ifdef CONFIG_MODULES
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module_init_info(qemu_modinfo);
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#endif
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qemu_init_subsystems();
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qemu_init_subsystems();
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/* first pass of option parsing */
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/* first pass of option parsing */
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@ -110,6 +110,17 @@ void module_call_init(module_init_type type)
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}
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}
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#ifdef CONFIG_MODULES
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#ifdef CONFIG_MODULES
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static const QemuModinfo module_info_stub[] = { {
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/* end of list */
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} };
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static const QemuModinfo *module_info = module_info_stub;
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void module_init_info(const QemuModinfo *info)
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{
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module_info = info;
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}
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static int module_load_file(const char *fname, bool mayfail, bool export_symbols)
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static int module_load_file(const char *fname, bool mayfail, bool export_symbols)
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{
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{
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GModule *g_module;
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GModule *g_module;
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