Index: src/runtime/protocol.m
==================================================================
--- src/runtime/protocol.m
+++ src/runtime/protocol.m
@@ -21,10 +21,39 @@
 #import "runtime.h"
 #import "runtime-private.h"
 
 @implementation Protocol
 @end
+
+inline const char*
+protocol_getName(Protocol *p)
+{
+	return p->name;
+}
+
+inline BOOL
+protocol_isEqual(Protocol *a, Protocol *b)
+{
+	return !strcmp(protocol_getName(a), protocol_getName(b));
+}
+
+BOOL
+protocol_conformsToProtocol(Protocol *a, Protocol *b)
+{
+	struct objc_protocol_list *pl;
+	size_t i;
+
+	if (protocol_isEqual(a, b))
+		return YES;
+
+	for (pl = a->protocol_list; pl != NULL; pl = pl->next)
+		for (i = 0; i < pl->count; i++)
+			if (protocol_conformsToProtocol(pl->list[i], b))
+				return YES;
+
+	return NO;
+}
 
 BOOL
 class_conformsToProtocol(Class cls, Protocol *p)
 {
 	struct objc_protocol_list *pl;

Index: src/runtime/runtime.h
==================================================================
--- src/runtime/runtime.h
+++ src/runtime/runtime.h
@@ -120,9 +120,12 @@
 extern IMP class_getMethodImplementation(Class, SEL);
 extern IMP class_replaceMethod(Class, SEL, IMP, const char*);
 extern const char* objc_get_type_encoding(Class, SEL);
 extern IMP objc_msg_lookup(id, SEL);
 extern IMP objc_msg_lookup_super(struct objc_super*, SEL);
+extern const char* protocol_getName(Protocol*);
+extern BOOL protocol_isEqual(Protocol*, Protocol*);
+extern BOOL protocol_conformsToProtocol(Protocol*, Protocol*);
 extern void objc_thread_add(void);
 extern void objc_thread_remove(void);
 extern void objc_exit(void);
 #endif