X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/43866e378188c25dd1e2208016ab3cbeb086ae6c..6601e61aa18bf4f09af135ff61fc7f4771d23b06:/osfmk/i386/commpage/commpage.h

diff --git a/osfmk/i386/commpage/commpage.h b/osfmk/i386/commpage/commpage.h
index c16d89942..2a14d32eb 100644
--- a/osfmk/i386/commpage/commpage.h
+++ b/osfmk/i386/commpage/commpage.h
@@ -3,22 +3,19 @@
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * 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 file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- * 
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * 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@
  */
@@ -26,6 +23,55 @@
 #ifndef _I386_COMMPAGE_H
 #define _I386_COMMPAGE_H
 
-/* we don't have a comm page on Intel, yet */
+#ifndef	__ASSEMBLER__
+#include <stdint.h>
+#endif /* __ASSEMBLER__ */
+
+#ifdef	__ASSEMBLER__
+#include <machine/asm.h>
+
+#define	COMMPAGE_DESCRIPTOR(label,address,must,cant)	\
+L ## label ## _end:					;\
+.const_data						;\
+L ## label ## _size = L ## label ## _end - L ## label	;\
+.private_extern _commpage_ ## label			;\
+_commpage_ ## label ## :				;\
+    .long	L ## label 				;\
+    .long	L ## label ## _size			;\
+    .long	address					;\
+    .long	must					;\
+    .long	cant					;\
+.text
+
+#else /* __ASSEMBLER__ */
+
+/* Each potential commpage routine is described by one of these.
+ * Note that the COMMPAGE_DESCRIPTOR macro (above), used in
+ * assembly language, must agree with this.
+ */
+ 
+typedef	struct	commpage_descriptor	{
+    void	*code_address;					// address of code
+    long 	code_length;					// length in bytes
+    long	commpage_address;				// put at this address (_COMM_PAGE_BCOPY etc)
+    long	musthave;					// _cpu_capability bits we must have
+    long	canthave;					// _cpu_capability bits we can't have
+} commpage_descriptor;
+
+
+extern	char	*commPagePtr;				// virt address of commpage in kernel map
+
+extern	void	commpage_set_timestamp(uint64_t tbr,uint32_t secs,uint32_t usecs,uint32_t ticks_per_sec);
+
+typedef struct {
+	uint64_t	nt_base_tsc;
+	uint64_t	nt_base_ns; 
+	uint32_t	nt_scale;
+	uint32_t	nt_shift;
+	uint64_t	nt_check_tsc;
+} commpage_nanotime_t;
+extern  void	commpage_set_nanotime(commpage_nanotime_t *new_nanotime);
+
+#endif	/* __ASSEMBLER__ */
 
 #endif /* _I386_COMMPAGE_H */