Initial import of qemu-2.4.1HEADmaster

1 files changed, 402 insertions, 0 deletions

diff --git a/scripts/qapi-types.py b/scripts/qapi-types.py
new file mode 100644
index 00000000..e6eb4b61
--- /dev/null
+++ b/scripts/qapi-types.py
@@ -0,0 +1,402 @@
+#
+# QAPI types generator
+#
+# Copyright IBM, Corp. 2011
+#
+# 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.
+
+from ordereddict import OrderedDict
+from qapi import *
+
+def generate_fwd_builtin(name):
+    return mcgen('''
+
+typedef struct %(name)sList
+{
+    union {
+        %(type)s value;
+        uint64_t padding;
+    };
+    struct %(name)sList *next;
+} %(name)sList;
+''',
+                 type=c_type(name),
+                 name=name)
+
+def generate_fwd_struct(name):
+    return mcgen('''
+
+typedef struct %(name)s %(name)s;
+
+typedef struct %(name)sList
+{
+    union {
+        %(name)s *value;
+        uint64_t padding;
+    };
+    struct %(name)sList *next;
+} %(name)sList;
+''',
+                 name=c_name(name))
+
+def generate_fwd_enum_struct(name):
+    return mcgen('''
+typedef struct %(name)sList
+{
+    union {
+        %(name)s value;
+        uint64_t padding;
+    };
+    struct %(name)sList *next;
+} %(name)sList;
+''',
+                 name=c_name(name))
+
+def generate_struct_fields(members):
+    ret = ''
+
+    for argname, argentry, optional in parse_args(members):
+        if optional:
+            ret += mcgen('''
+    bool has_%(c_name)s;
+''',
+                         c_name=c_name(argname))
+        ret += mcgen('''
+    %(c_type)s %(c_name)s;
+''',
+                     c_type=c_type(argentry), c_name=c_name(argname))
+
+    return ret
+
+def generate_struct(expr):
+
+    structname = expr.get('struct', "")
+    members = expr['data']
+    base = expr.get('base')
+
+    ret = mcgen('''
+struct %(name)s
+{
+''',
+          name=c_name(structname))
+
+    if base:
+        ret += generate_struct_fields({'base': base})
+
+    ret += generate_struct_fields(members)
+
+    # Make sure that all structs have at least one field; this avoids
+    # potential issues with attempting to malloc space for zero-length structs
+    # in C, and also incompatibility with C++ (where an empty struct is size 1).
+    if not base and not members:
+            ret += mcgen('''
+    char qapi_dummy_field_for_empty_struct;
+''')
+
+    ret += mcgen('''
+};
+''')
+
+    return ret
+
+def generate_enum_lookup(name, values):
+    ret = mcgen('''
+const char * const %(name)s_lookup[] = {
+''',
+                name=c_name(name))
+    i = 0
+    for value in values:
+        index = c_enum_const(name, value)
+        ret += mcgen('''
+    [%(index)s] = "%(value)s",
+''',
+                     index = index, value = value)
+
+    max_index = c_enum_const(name, 'MAX')
+    ret += mcgen('''
+    [%(max_index)s] = NULL,
+};
+
+''',
+        max_index=max_index)
+    return ret
+
+def generate_enum(name, values):
+    name = c_name(name)
+    lookup_decl = mcgen('''
+extern const char * const %(name)s_lookup[];
+''',
+                name=name)
+
+    enum_decl = mcgen('''
+typedef enum %(name)s
+{
+''',
+                name=name)
+
+    # append automatically generated _MAX value
+    enum_values = values + [ 'MAX' ]
+
+    i = 0
+    for value in enum_values:
+        enum_full_value = c_enum_const(name, value)
+        enum_decl += mcgen('''
+    %(enum_full_value)s = %(i)d,
+''',
+                     enum_full_value = enum_full_value,
+                     i=i)
+        i += 1
+
+    enum_decl += mcgen('''
+} %(name)s;
+''',
+                 name=name)
+
+    return lookup_decl + enum_decl
+
+def generate_alternate_qtypes(expr):
+
+    name = expr['alternate']
+    members = expr['data']
+
+    ret = mcgen('''
+const int %(name)s_qtypes[QTYPE_MAX] = {
+''',
+                name=c_name(name))
+
+    for key in members:
+        qtype = find_alternate_member_qtype(members[key])
+        assert qtype, "Invalid alternate member"
+
+        ret += mcgen('''
+    [%(qtype)s] = %(enum_const)s,
+''',
+                     qtype = qtype,
+                     enum_const = c_enum_const(name + 'Kind', key))
+
+    ret += mcgen('''
+};
+''')
+    return ret
+
+
+def generate_union(expr, meta):
+
+    name = c_name(expr[meta])
+    typeinfo = expr['data']
+
+    base = expr.get('base')
+    discriminator = expr.get('discriminator')
+
+    enum_define = discriminator_find_enum_define(expr)
+    if enum_define:
+        discriminator_type_name = enum_define['enum_name']
+    else:
+        discriminator_type_name = '%sKind' % (name)
+
+    ret = mcgen('''
+struct %(name)s
+{
+    %(discriminator_type_name)s kind;
+    union {
+        void *data;
+''',
+                name=name,
+                discriminator_type_name=c_name(discriminator_type_name))
+
+    for key in typeinfo:
+        ret += mcgen('''
+        %(c_type)s %(c_name)s;
+''',
+                     c_type=c_type(typeinfo[key]),
+                     c_name=c_name(key))
+
+    ret += mcgen('''
+    };
+''')
+
+    if base:
+        assert discriminator
+        base_fields = find_struct(base)['data'].copy()
+        del base_fields[discriminator]
+        ret += generate_struct_fields(base_fields)
+    else:
+        assert not discriminator
+
+    ret += mcgen('''
+};
+''')
+    if meta == 'alternate':
+        ret += mcgen('''
+extern const int %(name)s_qtypes[];
+''',
+            name=name)
+
+
+    return ret
+
+def generate_type_cleanup_decl(name):
+    ret = mcgen('''
+void qapi_free_%(name)s(%(c_type)s obj);
+''',
+                c_type=c_type(name), name=c_name(name))
+    return ret
+
+def generate_type_cleanup(name):
+    ret = mcgen('''
+
+void qapi_free_%(name)s(%(c_type)s obj)
+{
+    QapiDeallocVisitor *md;
+    Visitor *v;
+
+    if (!obj) {
+        return;
+    }
+
+    md = qapi_dealloc_visitor_new();
+    v = qapi_dealloc_get_visitor(md);
+    visit_type_%(name)s(v, &obj, NULL, NULL);
+    qapi_dealloc_visitor_cleanup(md);
+}
+''',
+                c_type=c_type(name), name=c_name(name))
+    return ret
+
+do_builtins = False
+
+(input_file, output_dir, do_c, do_h, prefix, opts) = \
+    parse_command_line("b", ["builtins"])
+
+for o, a in opts:
+    if o in ("-b", "--builtins"):
+        do_builtins = True
+
+c_comment = '''
+/*
+ * deallocation functions for schema-defined QAPI types
+ *
+ * Copyright IBM, Corp. 2011
+ *
+ * Authors:
+ *  Anthony Liguori   <aliguori@us.ibm.com>
+ *  Michael Roth      <mdroth@linux.vnet.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 types
+ *
+ * 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,
+                            'qapi-types.c', 'qapi-types.h',
+                            c_comment, h_comment)
+
+fdef.write(mcgen('''
+#include "qapi/dealloc-visitor.h"
+#include "%(prefix)sqapi-types.h"
+#include "%(prefix)sqapi-visit.h"
+
+''',
+                 prefix=prefix))
+
+fdecl.write(mcgen('''
+#include <stdbool.h>
+#include <stdint.h>
+
+'''))
+
+exprs = parse_schema(input_file)
+
+fdecl.write(guardstart("QAPI_TYPES_BUILTIN_STRUCT_DECL"))
+for typename in builtin_types.keys():
+    fdecl.write(generate_fwd_builtin(typename))
+fdecl.write(guardend("QAPI_TYPES_BUILTIN_STRUCT_DECL"))
+
+for expr in exprs:
+    ret = "\n"
+    if expr.has_key('struct'):
+        ret += generate_fwd_struct(expr['struct'])
+    elif expr.has_key('enum'):
+        ret += generate_enum(expr['enum'], expr['data']) + "\n"
+        ret += generate_fwd_enum_struct(expr['enum'])
+        fdef.write(generate_enum_lookup(expr['enum'], expr['data']))
+    elif expr.has_key('union'):
+        ret += generate_fwd_struct(expr['union']) + "\n"
+        enum_define = discriminator_find_enum_define(expr)
+        if not enum_define:
+            ret += generate_enum('%sKind' % expr['union'], expr['data'].keys())
+            fdef.write(generate_enum_lookup('%sKind' % expr['union'],
+                                            expr['data'].keys()))
+    elif expr.has_key('alternate'):
+        ret += generate_fwd_struct(expr['alternate']) + "\n"
+        ret += generate_enum('%sKind' % expr['alternate'], expr['data'].keys())
+        fdef.write(generate_enum_lookup('%sKind' % expr['alternate'],
+                                        expr['data'].keys()))
+        fdef.write(generate_alternate_qtypes(expr))
+    else:
+        continue
+    fdecl.write(ret)
+
+# to avoid header dependency hell, we always generate declarations
+# for built-in types in our header files and simply guard them
+fdecl.write(guardstart("QAPI_TYPES_BUILTIN_CLEANUP_DECL"))
+for typename in builtin_types.keys():
+    fdecl.write(generate_type_cleanup_decl(typename + "List"))
+fdecl.write(guardend("QAPI_TYPES_BUILTIN_CLEANUP_DECL"))
+
+# ...this doesn't work for cases where we link in multiple objects that
+# have the functions defined, so we use -b option to provide control
+# over these cases
+if do_builtins:
+    fdef.write(guardstart("QAPI_TYPES_BUILTIN_CLEANUP_DEF"))
+    for typename in builtin_types.keys():
+        fdef.write(generate_type_cleanup(typename + "List"))
+    fdef.write(guardend("QAPI_TYPES_BUILTIN_CLEANUP_DEF"))
+
+for expr in exprs:
+    ret = "\n"
+    if expr.has_key('struct'):
+        ret += generate_struct(expr) + "\n"
+        ret += generate_type_cleanup_decl(expr['struct'] + "List")
+        fdef.write(generate_type_cleanup(expr['struct'] + "List") + "\n")
+        ret += generate_type_cleanup_decl(expr['struct'])
+        fdef.write(generate_type_cleanup(expr['struct']) + "\n")
+    elif expr.has_key('union'):
+        ret += generate_union(expr, 'union')
+        ret += generate_type_cleanup_decl(expr['union'] + "List")
+        fdef.write(generate_type_cleanup(expr['union'] + "List") + "\n")
+        ret += generate_type_cleanup_decl(expr['union'])
+        fdef.write(generate_type_cleanup(expr['union']) + "\n")
+    elif expr.has_key('alternate'):
+        ret += generate_union(expr, 'alternate')
+        ret += generate_type_cleanup_decl(expr['alternate'] + "List")
+        fdef.write(generate_type_cleanup(expr['alternate'] + "List") + "\n")
+        ret += generate_type_cleanup_decl(expr['alternate'])
+        fdef.write(generate_type_cleanup(expr['alternate']) + "\n")
+    elif expr.has_key('enum'):
+        ret += generate_type_cleanup_decl(expr['enum'] + "List")
+        fdef.write(generate_type_cleanup(expr['enum'] + "List") + "\n")
+    else:
+        continue
+    fdecl.write(ret)
+
+close_output(fdef, fdecl)