*
* @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.
+ * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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
* 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@
*/
#include <mach/ppc/vm_param.h>
#include <assym.s>
-.set kLog2CacheLineSize, 5
-.set kCacheLineSize, 32
-
-ENTRY(kdp_flush_cache, TAG_NO_FRAME_USED)
- cmpi cr0,0,r4,0 /* is this zero length? */
- add r4,r3,r4 /* calculate last byte + 1 */
- subi r4,r4,1 /* calculate last byte */
-
- srwi r5,r3,kLog2CacheLineSize /* calc first cache line index */
- srwi r4,r4,kLog2CacheLineSize /* calc last cache line index */
- beq cr0, LdataToCodeDone /* done if zero length */
-
- subf r4,r5,r4 /* calc diff (# lines minus 1) */
- addi r4,r4,1 /* # of cache lines to flush */
- slwi r5,r5,kLog2CacheLineSize /* calc addr of first cache line */
-
- /* flush the data cache lines */
- mr r3,r5 /* starting address for loop */
- mtctr r4 /* loop count */
-LdataToCodeFlushLoop:
- dcbf 0, r3 /* flush the data cache line */
- addi r3,r3,kCacheLineSize /* advance to next cache line */
- bdnz LdataToCodeFlushLoop /* loop until count is zero */
- sync /* wait until RAM is valid */
-
- /* invalidate the code cache lines */
- mr r3,r5 /* starting address for loop */
- mtctr r4 /* loop count */
-LdataToCodeInvalidateLoop:
- icbi 0, r3 /* invalidate code cache line */
- addi r3,r3,kCacheLineSize /* advance to next cache line */
- bdnz LdataToCodeInvalidateLoop /* loop until count is zero */
- sync /* wait until last icbi completes */
- isync /* discard prefetched instructions */
-LdataToCodeDone:
- blr /* return nothing */
-
ENTRY(kdp_sync_cache, TAG_NO_FRAME_USED)
sync /* data sync */
isync /* inst sync */
blr /* return nothing */
-ENTRY(kdp_xlate_off, TAG_NO_FRAME_USED)
- mfmsr r3
- rlwinm r4, r3, 0, MSR_DR_BIT+1, MSR_IR_BIT-1
- mtmsr r4
- isync
- blr
-ENTRY(kdp_xlate_restore, TAG_NO_FRAME_USED)
- mtmsr r3
- isync
- blr
+;
+; This is a really stupid physical copy. 1 whole byte at a time...
+; Source and dest are long longs. We do this with 64-bit on if
+; supported.
+;
+
+ .align 5
+ .globl EXT(kdp_copy_phys)
+
+LEXT(kdp_copy_phys)
+ mflr r12 ; Save return
+
+ bl EXT(ml_set_physical_disabled) ; No DR and get 64-bit
+
+ rlwinm r3,r3,0,1,0 ; Dup low to high source
+ rlwinm r5,r5,0,1,0 ; Dup low to high dest
+ rlwimi r3,r4,0,0,31 ; Copy bottom on in source
+ rlwimi r5,r6,0,0,31 ; Copy bottom on in dest
+
+kcpagain: addic. r7,r7,-1 ; Drop count
+ blt-- kcpdone ; All done...
+ lbz r0,0(r3) ; Grab a whole one
+ stb r0,0(r5) ; Lay it gently down
+ addi r3,r3,1 ; Next source
+ addi r5,r5,1 ; Next destination
+ b kcpagain ; Once more with feeling...
+
+kcpdone: bl EXT(ml_restore) ; Put trans, etc back
+ mtlr r12 ; Restore return
+ blr ; Come again please...
+
projects / apple / xnu.git / blobdiff