xnu-1228.3.13.tar.gz

[apple/xnu.git] / osfmk / ppc / bzero.s

diff --git a/osfmk/ppc/bzero.s b/osfmk/ppc/bzero.s
index 0a736ba829b85935398f38fcac7adb7f7ace17a2..0dbd810b4c4d0001768de08600089e0a6c2eaeaf 100644 (file)
--- a/osfmk/ppc/bzero.s
+++ b/osfmk/ppc/bzero.s
@@ -1,14 +1,19 @@
 /*
  * Copyright (c) 2002 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
  * 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.
+ * 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.
+ * 
+ * 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
@@ -18,7 +23,7 @@
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 
 #include <ppc/asm.h>
@@ -31,7 +36,28 @@
         .globl _bzero
         .globl _bzero_nc
         .globl _bzero_phys
+        .globl _bzero_phys_nc
+
 
+// *****************************
+// * B Z E R O _ P H Y S _ N C *
+// *****************************
+//
+// void bzero_phys_nc(addr64_t phys_addr, uint32_t length);
+//
+// Takes a phys addr in (r3,r4), and length in r5.  NO CACHING
+
+        .align 5
+LEXT(bzero_phys_nc)
+        mflr   r12                             // save return address
+        rlwinm r3,r3,0,1,0             // coallesce long-long in (r3,r4) into reg64_t in r3
+        rlwimi r3,r4,0,0,31
+        mr             r4,r5                   // put length where bzero() expects it
+        bl             EXT(ml_set_physical_get_ffs)    // turn DR off, SF on, features in cr6, old MSR in r11
+        bl             EXT(bzero_nc)           // use normal bzero() routine
+        mtlr   r12                             // restore return
+        b              EXT(ml_restore)         // restore MSR, turning DR on and SF off
+        
 
 // ***********************
 // * B Z E R O _ P H Y S *