Initial import of qemu-2.4.1HEADmaster

1 files changed, 376 insertions, 0 deletions

diff --git a/scripts/qapi-commands.py b/scripts/qapi-commands.py
new file mode 100644
index 00000000..ca22acc1
--- /dev/null
+++ b/scripts/qapi-commands.py
@@ -0,0 +1,376 @@
+#
+# 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 ordereddict import OrderedDict
+from qapi import *
+import re
+
+def generate_command_decl(name, args, ret_type):
+    arglist=""
+    for argname, argtype, optional in parse_args(args):
+        argtype = c_type(argtype, is_param=True)
+        if optional:
+            arglist += "bool has_%s, " % c_name(argname)
+        arglist += "%s %s, " % (argtype, c_name(argname))
+    return mcgen('''
+%(ret_type)s qmp_%(name)s(%(args)sError **errp);
+''',
+                 ret_type=c_type(ret_type), name=c_name(name),
+                 args=arglist).strip()
+
+def gen_err_check(errvar):
+    if errvar:
+        return mcgen('''
+if (local_err) {
+    goto out;
+}
+''')
+    return ''
+
+def gen_sync_call(name, args, ret_type, indent=0):
+    ret = ""
+    arglist=""
+    retval=""
+    if ret_type:
+        retval = "retval = "
+    for argname, argtype, optional in parse_args(args):
+        if optional:
+            arglist += "has_%s, " % c_name(argname)
+        arglist += "%s, " % (c_name(argname))
+    push_indent(indent)
+    ret = mcgen('''
+%(retval)sqmp_%(name)s(%(args)s&local_err);
+
+''',
+                name=c_name(name), args=arglist, retval=retval).rstrip()
+    if ret_type:
+        ret += "\n" + gen_err_check('local_err')
+        ret += "\n" + mcgen(''''
+%(marshal_output_call)s
+''',
+                            marshal_output_call=gen_marshal_output_call(name, ret_type)).rstrip()
+    pop_indent(indent)
+    return ret.rstrip()
+
+
+def gen_marshal_output_call(name, ret_type):
+    if not ret_type:
+        return ""
+    return "qmp_marshal_output_%s(retval, ret, &local_err);" % c_name(name)
+
+def gen_visitor_input_containers_decl(args, obj):
+    ret = ""
+
+    push_indent()
+    if len(args) > 0:
+        ret += mcgen('''
+QmpInputVisitor *mi = qmp_input_visitor_new_strict(%(obj)s);
+QapiDeallocVisitor *md;
+Visitor *v;
+''',
+                     obj=obj)
+    pop_indent()
+
+    return ret.rstrip()
+
+def gen_visitor_input_vars_decl(args):
+    ret = ""
+    push_indent()
+    for argname, argtype, optional in parse_args(args):
+        if optional:
+            ret += mcgen('''
+bool has_%(argname)s = false;
+''',
+                         argname=c_name(argname))
+        if is_c_ptr(argtype):
+            ret += mcgen('''
+%(argtype)s %(argname)s = NULL;
+''',
+                         argname=c_name(argname), argtype=c_type(argtype))
+        else:
+            ret += mcgen('''
+%(argtype)s %(argname)s = {0};
+''',
+                         argname=c_name(argname), argtype=c_type(argtype))
+
+    pop_indent()
+    return ret.rstrip()
+
+def gen_visitor_input_block(args, dealloc=False):
+    ret = ""
+    errparg = '&local_err'
+    errarg = 'local_err'
+
+    if len(args) == 0:
+        return ret
+
+    push_indent()
+
+    if dealloc:
+        errparg = 'NULL'
+        errarg = None;
+        ret += mcgen('''
+qmp_input_visitor_cleanup(mi);
+md = qapi_dealloc_visitor_new();
+v = qapi_dealloc_get_visitor(md);
+''')
+    else:
+        ret += mcgen('''
+v = qmp_input_get_visitor(mi);
+''')
+
+    for argname, argtype, optional in parse_args(args):
+        if optional:
+            ret += mcgen('''
+visit_optional(v, &has_%(c_name)s, "%(name)s", %(errp)s);
+''',
+                         c_name=c_name(argname), name=argname, errp=errparg)
+            ret += gen_err_check(errarg)
+            ret += mcgen('''
+if (has_%(c_name)s) {
+''',
+                         c_name=c_name(argname))
+            push_indent()
+        ret += mcgen('''
+visit_type_%(visitor)s(v, &%(c_name)s, "%(name)s", %(errp)s);
+''',
+                     c_name=c_name(argname), name=argname, argtype=argtype,
+                     visitor=type_name(argtype), errp=errparg)
+        ret += gen_err_check(errarg)
+        if optional:
+            pop_indent()
+            ret += mcgen('''
+}
+''')
+
+    if dealloc:
+        ret += mcgen('''
+qapi_dealloc_visitor_cleanup(md);
+''')
+    pop_indent()
+    return ret.rstrip()
+
+def gen_marshal_output(name, args, ret_type, middle_mode):
+    if not ret_type:
+        return ""
+
+    ret = mcgen('''
+static void qmp_marshal_output_%(c_name)s(%(c_ret_type)s ret_in, QObject **ret_out, Error **errp)
+{
+    Error *local_err = NULL;
+    QmpOutputVisitor *mo = qmp_output_visitor_new();
+    QapiDeallocVisitor *md;
+    Visitor *v;
+
+    v = qmp_output_get_visitor(mo);
+    visit_type_%(visitor)s(v, &ret_in, "unused", &local_err);
+    if (local_err) {
+        goto out;
+    }
+    *ret_out = qmp_output_get_qobject(mo);
+
+out:
+    error_propagate(errp, local_err);
+    qmp_output_visitor_cleanup(mo);
+    md = qapi_dealloc_visitor_new();
+    v = qapi_dealloc_get_visitor(md);
+    visit_type_%(visitor)s(v, &ret_in, "unused", NULL);
+    qapi_dealloc_visitor_cleanup(md);
+}
+''',
+                c_ret_type=c_type(ret_type), c_name=c_name(name),
+                visitor=type_name(ret_type))
+
+    return ret
+
+def gen_marshal_input_decl(name, args, ret_type, middle_mode):
+    ret = 'void qmp_marshal_input_%s(QDict *args, QObject **ret, Error **errp)' % c_name(name)
+    if not middle_mode:
+        ret = "static " + ret
+    return ret
+
+def gen_marshal_input(name, args, ret_type, middle_mode):
+    hdr = gen_marshal_input_decl(name, args, ret_type, middle_mode)
+
+    ret = mcgen('''
+%(header)s
+{
+    Error *local_err = NULL;
+''',
+                header=hdr)
+
+    if ret_type:
+        if is_c_ptr(ret_type):
+            retval = "    %s retval = NULL;" % c_type(ret_type)
+        else:
+            retval = "    %s retval;" % c_type(ret_type)
+        ret += mcgen('''
+%(retval)s
+''',
+                     retval=retval)
+
+    if len(args) > 0:
+        ret += mcgen('''
+%(visitor_input_containers_decl)s
+%(visitor_input_vars_decl)s
+
+%(visitor_input_block)s
+
+''',
+                     visitor_input_containers_decl=gen_visitor_input_containers_decl(args, "QOBJECT(args)"),
+                     visitor_input_vars_decl=gen_visitor_input_vars_decl(args),
+                     visitor_input_block=gen_visitor_input_block(args))
+    else:
+        ret += mcgen('''
+
+    (void)args;
+''')
+
+    ret += mcgen('''
+%(sync_call)s
+''',
+                 sync_call=gen_sync_call(name, args, ret_type, indent=4))
+    if re.search('^ *goto out\\;', ret, re.MULTILINE):
+        ret += mcgen('''
+
+out:
+''')
+    ret += mcgen('''
+    error_propagate(errp, local_err);
+%(visitor_input_block_cleanup)s
+}
+''',
+                 visitor_input_block_cleanup=gen_visitor_input_block(args,
+                                                                     dealloc=True))
+    return ret
+
+def gen_registry(commands):
+    registry=""
+    push_indent()
+    for cmd in commands:
+        options = 'QCO_NO_OPTIONS'
+        if not cmd.get('success-response', True):
+            options = 'QCO_NO_SUCCESS_RESP'
+
+        registry += mcgen('''
+qmp_register_command("%(name)s", qmp_marshal_input_%(c_name)s, %(opts)s);
+''',
+                     name=cmd['command'], c_name=c_name(cmd['command']),
+                     opts=options)
+    pop_indent()
+    ret = mcgen('''
+static void qmp_init_marshal(void)
+{
+%(registry)s
+}
+
+qapi_init(qmp_init_marshal);
+''',
+                registry=registry.rstrip())
+    return ret
+
+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
+
+exprs = parse_schema(input_file)
+commands = filter(lambda expr: expr.has_key('command'), exprs)
+commands = filter(lambda expr: not expr.has_key('gen'), commands)
+
+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))
+
+for cmd in commands:
+    arglist = []
+    ret_type = None
+    if cmd.has_key('data'):
+        arglist = cmd['data']
+    if cmd.has_key('returns'):
+        ret_type = cmd['returns']
+    ret = generate_command_decl(cmd['command'], arglist, ret_type) + "\n"
+    fdecl.write(ret)
+    if ret_type:
+        ret = gen_marshal_output(cmd['command'], arglist, ret_type, middle_mode) + "\n"
+        fdef.write(ret)
+
+    if middle_mode:
+        fdecl.write('%s;\n' % gen_marshal_input_decl(cmd['command'], arglist, ret_type, middle_mode))
+
+    ret = gen_marshal_input(cmd['command'], arglist, ret_type, middle_mode) + "\n"
+    fdef.write(ret)
+
+if not middle_mode:
+    ret = gen_registry(commands)
+    fdef.write(ret)
+
+close_output(fdef, fdecl)