X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/6601e61aa18bf4f09af135ff61fc7f4771d23b06..0c530ab8987f0ae6a1a3d9284f40182b88852816:/osfmk/kern/page_decrypt.c

diff --git a/osfmk/kern/page_decrypt.c b/osfmk/kern/page_decrypt.c
new file mode 100644
index 000000000..c397ab1e5
--- /dev/null
+++ b/osfmk/kern/page_decrypt.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2005 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.1 (the
+ * "License").  You may not use this file except in compliance with the
+ * License.  Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.
+ * 
+ * This Original Code and all software distributed under the License are
+ * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+
+#include <kern/page_decrypt.h>
+#include <kern/task.h>
+#include <machine/commpage.h>
+
+/*#include <sys/kernel.h> */
+extern int hz;			/* system clock's frequency */
+extern void*   dsmos_blobs[];
+extern int     dsmos_blob_count;
+
+/* #include <sys/proc.h> */
+extern int	tsleep(void *chan, int pri, const char *wmesg, int timo);
+
+/* #include <sys/param.h> */
+#define	PZERO	22		/* No longer magic, shouldn't be here.  XXX */
+
+static int _dsmos_wait_for_callback(const void*,void*);
+
+static dsmos_page_transform_hook_t dsmos_hook = _dsmos_wait_for_callback;
+
+int
+_dsmos_wait_for_callback(const void* from, void *to)
+{
+/*	printf("%s\n", __FUNCTION__); */
+	while ( (dsmos_hook == NULL) || (dsmos_hook == _dsmos_wait_for_callback) )
+		tsleep(&dsmos_hook, PZERO, "dsmos", hz / 10);
+
+	return (*dsmos_hook) (from, to);
+}
+
+void
+dsmos_page_transform_hook(dsmos_page_transform_hook_t hook,
+			  void (*commpage_setup_dsmos_blob)(void**, int))
+{
+#ifdef i386
+	/* finish initializing the commpage here */
+	(*commpage_setup_dsmos_blob)(dsmos_blobs, dsmos_blob_count);
+#endif
+
+	/* set the hook now - new callers will run with it */
+	dsmos_hook = hook;
+}
+
+int
+dsmos_page_transform(const void* from, void* to)
+{
+/*	printf("%s\n", __FUNCTION__); */
+	if (dsmos_hook == NULL)
+		return KERN_FAILURE;
+	return (*dsmos_hook) (from, to);
+}
+