xnu-1228.12.14.tar.gz

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

diff --git a/osfmk/ppc/db_asm.s b/osfmk/ppc/db_asm.s
index d439fbb7c8b794cb1da51eb731b8b9d4bead61cb..626fa18226c8187ccec2189b3024939b4a621f76 100644 (file)
--- a/osfmk/ppc/db_asm.s
+++ b/osfmk/ppc/db_asm.s
@@ -1,16 +1,19 @@
 /*
  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
- * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * @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
@@ -20,7 +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@
  */
 /*
  * @OSF_COPYRIGHT@
@@ -32,60 +35,6 @@
 #include <mach/ppc/vm_param.h>
 #include <assym.s>
 
-/* void
- * db_phys_copy(src, dst, bytecount)
- *      vm_offset_t     src;
- *      vm_offset_t     dst;
- *      int             bytecount
- *
- * This routine will copy bytecount bytes from physical address src to physical
- * address dst. 
- */
-ENTRY(db_phys_copy, TAG_NO_FRAME_USED)
-
-       /* Switch off data translations */
-       mfmsr   r6
-       rlwinm  r6,r6,0,MSR_FP_BIT+1,MSR_FP_BIT-1       ; Force floating point off
-       rlwinm  r6,r6,0,MSR_VEC_BIT+1,MSR_VEC_BIT-1     ; Force vectors off
-       rlwinm  r7,     r6,     0,      MSR_DR_BIT+1,   MSR_DR_BIT-1
-       mtmsr   r7
-       isync                   /* Ensure data translations are off */
-
-       subi    r3,     r3,     4
-       subi    r4,     r4,     4
-
-       cmpwi   r5,     3
-       ble-    .L_db_phys_copy_bytes
-.L_db_phys_copy_loop:
-       lwz     r0,     4(r3)
-       addi    r3,     r3,     4
-       subi    r5,     r5,     4
-       stw     r0,     4(r4)
-       addi    r4,     r4,     4
-       cmpwi   r5,     3
-       bgt+    .L_db_phys_copy_loop
-
-       /* If no leftover bytes, we're done now */
-       cmpwi   r5,     0
-       beq+    .L_db_phys_copy_done
-       
-.L_db_phys_copy_bytes:
-       addi    r3,     r3,     3
-       addi    r4,     r4,     3
-.L_db_phys_copy_byte_loop:     
-       lbz     r0,     1(r3)
-       addi    r3,     r3,     1
-       subi    r5,     r5,     1
-       stb     r0,     1(r4)
-       addi    r4,     r4,     1
-       cmpwi   r5,     0
-       bne+    .L_db_phys_copy_loop
-
-.L_db_phys_copy_done:
-       mtmsr   r6              /* Restore original translations */
-       isync                   /* Ensure data translations are off */
-
-       blr
 
 /* void
  * db_phys_cmp(src_a, src_b, bytecount)
@@ -97,11 +46,15 @@ ENTRY(db_phys_copy, TAG_NO_FRAME_USED)
  * address src_b. 
  */
 
+#warning THIS IS BROKEN FOR 64-BIT
+
        /* Switch off data translations */
+       lis             r7,hi16(MASK(MSR_VEC))
+       ori             r7,r7,lo16(MASK(MSR_FP))
        mfmsr   r6
-       rlwinm  r6,r6,0,MSR_FP_BIT+1,MSR_FP_BIT-1       ; Force floating point off
-       rlwinm  r6,r6,0,MSR_VEC_BIT+1,MSR_VEC_BIT-1     ; Force vectors off
-       rlwinm  r7,     r6,     0,      MSR_DR_BIT+1,   MSR_DR_BIT-1
+       andc    r6,r6,r7                        ; Force FP and vec off
+       ori             r7,r7,lo16(MASK(MSR_DR))        ; Set the DR bit
+       andc    r7,r6,r7                        ; Force DR off
        mtmsr   r7
        isync                   /* Ensure data translations are off */