mirror of https://gitee.com/openkylin/qemu.git
328 lines
7.5 KiB
Python
328 lines
7.5 KiB
Python
#
|
|
# QAPI command marshaller generator
|
|
#
|
|
# Copyright IBM, Corp. 2011
|
|
# Copyright (C) 2014-2015 Red Hat, Inc.
|
|
#
|
|
# Authors:
|
|
# Anthony Liguori <aliguori@us.ibm.com>
|
|
# Michael Roth <mdroth@linux.vnet.ibm.com>
|
|
# Markus Armbruster <armbru@redhat.com>
|
|
#
|
|
# This work is licensed under the terms of the GNU GPL, version 2.
|
|
# See the COPYING file in the top-level directory.
|
|
|
|
from qapi import *
|
|
import re
|
|
|
|
|
|
def gen_command_decl(name, arg_type, ret_type):
|
|
return mcgen('''
|
|
%(c_type)s qmp_%(c_name)s(%(params)s);
|
|
''',
|
|
c_type=(ret_type and ret_type.c_type()) or 'void',
|
|
c_name=c_name(name),
|
|
params=gen_params(arg_type, 'Error **errp'))
|
|
|
|
|
|
def gen_call(name, arg_type, ret_type):
|
|
ret = ''
|
|
|
|
argstr = ''
|
|
if arg_type:
|
|
for memb in arg_type.members:
|
|
if memb.optional:
|
|
argstr += 'has_%s, ' % c_name(memb.name)
|
|
argstr += '%s, ' % c_name(memb.name)
|
|
|
|
lhs = ''
|
|
if ret_type:
|
|
lhs = 'retval = '
|
|
|
|
ret = mcgen('''
|
|
|
|
%(lhs)sqmp_%(c_name)s(%(args)s&err);
|
|
''',
|
|
c_name=c_name(name), args=argstr, lhs=lhs)
|
|
if ret_type:
|
|
ret += gen_err_check()
|
|
ret += mcgen('''
|
|
|
|
qmp_marshal_output_%(c_name)s(retval, ret, &err);
|
|
''',
|
|
c_name=ret_type.c_name())
|
|
return ret
|
|
|
|
|
|
def gen_marshal_vars(arg_type, ret_type):
|
|
ret = mcgen('''
|
|
Error *err = NULL;
|
|
''')
|
|
|
|
if ret_type:
|
|
ret += mcgen('''
|
|
%(c_type)s retval;
|
|
''',
|
|
c_type=ret_type.c_type())
|
|
|
|
if arg_type:
|
|
ret += mcgen('''
|
|
QmpInputVisitor *qiv = qmp_input_visitor_new_strict(QOBJECT(args));
|
|
QapiDeallocVisitor *qdv;
|
|
Visitor *v;
|
|
''')
|
|
|
|
for memb in arg_type.members:
|
|
if memb.optional:
|
|
ret += mcgen('''
|
|
bool has_%(c_name)s = false;
|
|
''',
|
|
c_name=c_name(memb.name))
|
|
ret += mcgen('''
|
|
%(c_type)s %(c_name)s = %(c_null)s;
|
|
''',
|
|
c_name=c_name(memb.name),
|
|
c_type=memb.type.c_type(),
|
|
c_null=memb.type.c_null())
|
|
ret += '\n'
|
|
else:
|
|
ret += mcgen('''
|
|
|
|
(void)args;
|
|
''')
|
|
|
|
return ret
|
|
|
|
|
|
def gen_marshal_input_visit(arg_type, dealloc=False):
|
|
ret = ''
|
|
|
|
if not arg_type:
|
|
return ret
|
|
|
|
if dealloc:
|
|
ret += mcgen('''
|
|
qmp_input_visitor_cleanup(qiv);
|
|
qdv = qapi_dealloc_visitor_new();
|
|
v = qapi_dealloc_get_visitor(qdv);
|
|
''')
|
|
else:
|
|
ret += mcgen('''
|
|
v = qmp_input_get_visitor(qiv);
|
|
''')
|
|
|
|
ret += gen_visit_fields(arg_type.members, skiperr=dealloc)
|
|
|
|
if dealloc:
|
|
ret += mcgen('''
|
|
qapi_dealloc_visitor_cleanup(qdv);
|
|
''')
|
|
return ret
|
|
|
|
|
|
def gen_marshal_output(ret_type):
|
|
return mcgen('''
|
|
|
|
static void qmp_marshal_output_%(c_name)s(%(c_type)s ret_in, QObject **ret_out, Error **errp)
|
|
{
|
|
Error *err = NULL;
|
|
QmpOutputVisitor *qov = qmp_output_visitor_new();
|
|
QapiDeallocVisitor *qdv;
|
|
Visitor *v;
|
|
|
|
v = qmp_output_get_visitor(qov);
|
|
visit_type_%(c_name)s(v, &ret_in, "unused", &err);
|
|
if (err) {
|
|
goto out;
|
|
}
|
|
*ret_out = qmp_output_get_qobject(qov);
|
|
|
|
out:
|
|
error_propagate(errp, err);
|
|
qmp_output_visitor_cleanup(qov);
|
|
qdv = qapi_dealloc_visitor_new();
|
|
v = qapi_dealloc_get_visitor(qdv);
|
|
visit_type_%(c_name)s(v, &ret_in, "unused", NULL);
|
|
qapi_dealloc_visitor_cleanup(qdv);
|
|
}
|
|
''',
|
|
c_type=ret_type.c_type(), c_name=ret_type.c_name())
|
|
|
|
|
|
def gen_marshal_proto(name):
|
|
ret = 'void qmp_marshal_%s(QDict *args, QObject **ret, Error **errp)' % c_name(name)
|
|
if not middle_mode:
|
|
ret = 'static ' + ret
|
|
return ret
|
|
|
|
|
|
def gen_marshal_decl(name):
|
|
return mcgen('''
|
|
%(proto)s;
|
|
''',
|
|
proto=gen_marshal_proto(name))
|
|
|
|
|
|
def gen_marshal(name, arg_type, ret_type):
|
|
ret = mcgen('''
|
|
|
|
%(proto)s
|
|
{
|
|
''',
|
|
proto=gen_marshal_proto(name))
|
|
|
|
ret += gen_marshal_vars(arg_type, ret_type)
|
|
ret += gen_marshal_input_visit(arg_type)
|
|
ret += gen_call(name, arg_type, ret_type)
|
|
|
|
if re.search('^ *goto out;', ret, re.MULTILINE):
|
|
ret += mcgen('''
|
|
|
|
out:
|
|
''')
|
|
ret += mcgen('''
|
|
error_propagate(errp, err);
|
|
''')
|
|
ret += gen_marshal_input_visit(arg_type, dealloc=True)
|
|
ret += mcgen('''
|
|
}
|
|
''')
|
|
return ret
|
|
|
|
|
|
def gen_register_command(name, success_response):
|
|
options = 'QCO_NO_OPTIONS'
|
|
if not success_response:
|
|
options = 'QCO_NO_SUCCESS_RESP'
|
|
|
|
ret = mcgen('''
|
|
qmp_register_command("%(name)s", qmp_marshal_%(c_name)s, %(opts)s);
|
|
''',
|
|
name=name, c_name=c_name(name),
|
|
opts=options)
|
|
return ret
|
|
|
|
|
|
def gen_registry(registry):
|
|
ret = mcgen('''
|
|
|
|
static void qmp_init_marshal(void)
|
|
{
|
|
''')
|
|
ret += registry
|
|
ret += mcgen('''
|
|
}
|
|
|
|
qapi_init(qmp_init_marshal);
|
|
''')
|
|
return ret
|
|
|
|
|
|
class QAPISchemaGenCommandVisitor(QAPISchemaVisitor):
|
|
def __init__(self):
|
|
self.decl = None
|
|
self.defn = None
|
|
self._regy = None
|
|
self._visited_ret_types = None
|
|
|
|
def visit_begin(self, schema):
|
|
self.decl = ''
|
|
self.defn = ''
|
|
self._regy = ''
|
|
self._visited_ret_types = set()
|
|
|
|
def visit_end(self):
|
|
if not middle_mode:
|
|
self.defn += gen_registry(self._regy)
|
|
self._regy = None
|
|
self._visited_ret_types = None
|
|
|
|
def visit_command(self, name, info, arg_type, ret_type,
|
|
gen, success_response):
|
|
if not gen:
|
|
return
|
|
self.decl += gen_command_decl(name, arg_type, ret_type)
|
|
if ret_type and ret_type not in self._visited_ret_types:
|
|
self._visited_ret_types.add(ret_type)
|
|
self.defn += gen_marshal_output(ret_type)
|
|
if middle_mode:
|
|
self.decl += gen_marshal_decl(name)
|
|
self.defn += gen_marshal(name, arg_type, ret_type)
|
|
if not middle_mode:
|
|
self._regy += gen_register_command(name, success_response)
|
|
|
|
|
|
middle_mode = False
|
|
|
|
(input_file, output_dir, do_c, do_h, prefix, opts) = \
|
|
parse_command_line("m", ["middle"])
|
|
|
|
for o, a in opts:
|
|
if o in ("-m", "--middle"):
|
|
middle_mode = True
|
|
|
|
c_comment = '''
|
|
/*
|
|
* schema-defined QMP->QAPI command dispatch
|
|
*
|
|
* Copyright IBM, Corp. 2011
|
|
*
|
|
* Authors:
|
|
* Anthony Liguori <aliguori@us.ibm.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
|
|
* See the COPYING.LIB file in the top-level directory.
|
|
*
|
|
*/
|
|
'''
|
|
h_comment = '''
|
|
/*
|
|
* schema-defined QAPI function prototypes
|
|
*
|
|
* Copyright IBM, Corp. 2011
|
|
*
|
|
* Authors:
|
|
* Anthony Liguori <aliguori@us.ibm.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
|
|
* See the COPYING.LIB file in the top-level directory.
|
|
*
|
|
*/
|
|
'''
|
|
|
|
(fdef, fdecl) = open_output(output_dir, do_c, do_h, prefix,
|
|
'qmp-marshal.c', 'qmp-commands.h',
|
|
c_comment, h_comment)
|
|
|
|
fdef.write(mcgen('''
|
|
#include "qemu-common.h"
|
|
#include "qemu/module.h"
|
|
#include "qapi/qmp/types.h"
|
|
#include "qapi/qmp/dispatch.h"
|
|
#include "qapi/visitor.h"
|
|
#include "qapi/qmp-output-visitor.h"
|
|
#include "qapi/qmp-input-visitor.h"
|
|
#include "qapi/dealloc-visitor.h"
|
|
#include "%(prefix)sqapi-types.h"
|
|
#include "%(prefix)sqapi-visit.h"
|
|
#include "%(prefix)sqmp-commands.h"
|
|
|
|
''',
|
|
prefix=prefix))
|
|
|
|
fdecl.write(mcgen('''
|
|
#include "%(prefix)sqapi-types.h"
|
|
#include "qapi/qmp/qdict.h"
|
|
#include "qapi/error.h"
|
|
|
|
''',
|
|
prefix=prefix))
|
|
|
|
schema = QAPISchema(input_file)
|
|
gen = QAPISchemaGenCommandVisitor()
|
|
schema.visit(gen)
|
|
fdef.write(gen.defn)
|
|
fdecl.write(gen.decl)
|
|
|
|
close_output(fdef, fdecl)
|