X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/e5568f75972dfc723778653c11cb6b4dc825716a..2d21ac55c334faf3a56e5634905ed6987fc787d4:/iokit/IOKit/ppc/IOSharedLockImp.h

diff --git a/iokit/IOKit/ppc/IOSharedLockImp.h b/iokit/IOKit/ppc/IOSharedLockImp.h
index 53c3a98cd..8c685b223 100644
--- a/iokit/IOKit/ppc/IOSharedLockImp.h
+++ b/iokit/IOKit/ppc/IOSharedLockImp.h
@@ -1,23 +1,29 @@
 /*
  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_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 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. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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
  * 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.
+ * 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.
  * 
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*
  * Copyright (c) 1998 Apple Computer, Inc.  All rights reserved. 
@@ -54,33 +60,6 @@
 #include <mach/ppc/asm.h>
 #endif
 
-.macro DISABLE_PREEMPTION
-#ifdef KERNEL
-	stwu	r1,-(FM_SIZE)(r1)
-	mflr	r0
-	stw		r3,FM_ARG0(r1)
-	stw		r0,(FM_SIZE+FM_LR_SAVE)(r1)
-	bl		EXT(_disable_preemption)
-	lwz		r3,FM_ARG0(r1)
-	lwz		r1,0(r1)
-	lwz		r0,FM_LR_SAVE(r1)
-	mtlr	r0
-#endif
-.endmacro
-.macro ENABLE_PREEMPTION
-#ifdef KERNEL
-	stwu	r1,-(FM_SIZE)(r1)
-	mflr	r0
-	stw		r3,FM_ARG0(r1)
-	stw		r0,(FM_SIZE+FM_LR_SAVE)(r1)
-	bl		EXT(_enable_preemption)
-	lwz		r3,FM_ARG0(r1)
-	lwz		r1,0(r1)
-	lwz		r0,FM_LR_SAVE(r1)
-	mtlr	r0
-#endif
-.endmacro
-
 /*
  *	void
  *	ev_lock(p)
@@ -149,7 +128,6 @@ LEAF(_ev_unlock)
 	sync
 	li	a7,0
 	stw	a7,0(a0)
-	ENABLE_PREEMPTION()
 	blr
 END(_ev_unlock)
 
@@ -157,7 +135,6 @@ LEAF(_IOSpinUnlock)
 	sync
 	li	a7,0
 	stw	a7,0(a0)
-	ENABLE_PREEMPTION()
 	blr
 END(_IOSpinUnlock)
 
@@ -170,9 +147,6 @@ END(_IOSpinUnlock)
  */
 
 LEAF(_ev_try_lock)
-	
-		DISABLE_PREEMPTION()
-
 		li		a6,1			// lock value
 		
 		lwz		a7,0(a0)		// Get lock word
@@ -192,16 +166,12 @@ LEAF(_ev_try_lock)
 		stwcx.	a7,a7,r1		// Kill reservation
 
 6:
-		ENABLE_PREEMPTION()
 		li	a0,0				// return FALSE
 		blr
 		
 END(_ev_try_lock)
 
 LEAF(_IOTrySpinLock)
-	
-		DISABLE_PREEMPTION()
-
 		li		a6,1			// lock value
 		
 		lwz		a7,0(a0)		// Get lock word
@@ -221,7 +191,6 @@ LEAF(_IOTrySpinLock)
 		stwcx.	a7,a7,r1		// Kill reservation
 
 6:
-		ENABLE_PREEMPTION()
 		li	a0,0				// return FALSE
 		blr