xnu-1486.2.11.tar.gz

[apple/xnu.git] / osfmk / i386 / commpage / bcopy_scalar.s

diff --git a/osfmk/i386/commpage/bcopy_scalar.s b/osfmk/i386/commpage/bcopy_scalar.s
index 7f322f548ff2da4c64a3f8eba26b17fd4ed12553..f87242ac6fdceaa9c6663fb2f10be2533c646203 100644 (file)
--- a/osfmk/i386/commpage/bcopy_scalar.s
+++ b/osfmk/i386/commpage/bcopy_scalar.s
@@ -1,23 +1,29 @@
 /*
- * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2003-2006 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
+ * @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. 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
  * 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@
+ * 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_OSREFERENCE_LICENSE_HEADER_END@
  */
 
 /*-
@@ -65,27 +71,29 @@
          *  ws@tools.de     (Wolfgang Solfrank, TooLs GmbH) +49-228-985800
          */
  
-.text
-.align 5, 0x90
-Lbcopy_scalar:
+COMMPAGE_FUNCTION_START(bcopy_scalar, 32, 5)
+       pushl   %ebp            /* set up a frame for backtraces */
+       movl    %esp,%ebp
         pushl   %esi
         pushl   %edi
-        movl    12(%esp),%esi
-        movl    16(%esp),%edi
+        movl    8(%ebp),%esi
+        movl    12(%ebp),%edi
        jmp     1f
 /*
-** These need to be 32 bytes from Lbcopy_scalar
-*/
-.align 5, 0x90
+ * These need to be 32 bytes from Lbcopy_scalar
+ */
+       .align 5, 0x90
 Lmemcpy_scalar:
 Lmemmove_scalar:
+       pushl   %ebp            /* set up a frame for backtraces */
+       movl    %esp,%ebp
         pushl   %esi
         pushl   %edi
-        movl    12(%esp),%edi
-        movl    16(%esp),%esi
+        movl    8(%ebp),%edi
+        movl    12(%ebp),%esi
         movl    %edi,%eax
 1:
-        movl    20(%esp),%ecx
+        movl    16(%ebp),%ecx
         movl    %edi,%edx
         subl    %esi,%edx
         cmpl    %ecx,%edx       /* overlapping? */
@@ -101,6 +109,7 @@ Lmemmove_scalar:
         movsb
         popl    %edi
         popl    %esi
+       popl    %ebp
         ret
 2:
         addl    %ecx,%edi       /* copy backwards. */
@@ -120,7 +129,8 @@ Lmemmove_scalar:
         movsl
         popl    %edi
         popl    %esi
+       popl    %ebp
         cld
         ret
 
-       COMMPAGE_DESCRIPTOR(bcopy_scalar,_COMM_PAGE_BCOPY,0,0)
+COMMPAGE_DESCRIPTOR(bcopy_scalar,_COMM_PAGE_BCOPY,0,kHasSSE2+kHasSupplementalSSE3)