*
* @APPLE_LICENSE_HEADER_START@
*
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
+ * 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. 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
+ * This 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * 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@
*/
#include <assym.s>
#include <debug.h>
-#include <cpus.h>
#include <db_machine_commands.h>
#include <mach_rt.h>
* there are parallel paths for 32- and 64-bit machines.
*/
-
+
+/*
+ * *****************************
+ * * s a v e _ s n a p s h o t *
+ * *****************************
+ *
+ * void save_snapshot();
+ *
+ * Link the current free list & processor local list on an independent list.
+ */
+ .align 5
+ .globl EXT(save_snapshot)
+
+LEXT(save_snapshot)
+ mflr r9 ; get return address
+ bl saveSetup ; turn translation off, 64-bit on, load many regs
+ bf-- pf64Bitb,save_snapshot32 ; skip if 32-bit processor
+
+ ; Handle 64-bit processor.
+
+save_snapshot64:
+
+ ld r8,next_savearea(r10) ; Start with the current savearea
+ std r8,SVsavefreesnapshot(0) ; Make it the restore list anchor
+ ld r5,SVfree(0) ; Get free save area list anchor
+
+save_snapshot64nextfree:
+ mr r7,r5
+ std r7,savemisc1(r8) ; Link this one
+ ld r5,SAVprev(r7) ; Get the next
+ mr r8,r7
+ mr. r0,r5
+ bne save_snapshot64nextfree
+
+ lwz r6,SVinuse(0) ; Get inuse count
+ ld r5,lclfree(r10) ; Get the local savearea list
+ subi r6,r6,1 ; Count the first as free
+
+save_snapshot64nextlocalfree:
+ subi r6,r6,1 ; Count as free
+ mr r7,r5
+ std r7,savemisc1(r8) ; Link this one
+ ld r5,SAVprev(r7) ; Get the next
+ mr r8,r7
+ mr. r0,r5
+ bne save_snapshot64nextlocalfree
+
+ std r5,savemisc1(r8) ; End the list
+ stw r6,SVsaveinusesnapshot(0) ; Save the new number of inuse saveareas
+
+ mtlr r9 ; Restore the return
+ b saveRestore64 ; Restore interrupts and translation
+
+ ; Handle 32-bit processor.
+
+save_snapshot32:
+ lwz r8,next_savearea+4(r10) ; Start with the current savearea
+ stw r8,SVsavefreesnapshot+4(0) ; Make it the restore list anchor
+ lwz r5,SVfree+4(0) ; Get free save area list anchor
+
+save_snapshot32nextfree:
+ mr r7,r5
+ stw r7,savemisc1+4(r8) ; Link this one
+ lwz r5,SAVprev+4(r7) ; Get the next
+ mr r8,r7
+ mr. r0,r5
+ bne save_snapshot32nextfree
+
+ lwz r6,SVinuse(0) ; Get inuse count
+ lwz r5,lclfree+4(r10) ; Get the local savearea list
+ subi r6,r6,1 ; Count the first as free
+
+save_snapshot32nextlocalfree:
+ subi r6,r6,1 ; Count as free
+ mr r7,r5
+ stw r7,savemisc1+4(r8) ; Link this one
+ lwz r5,SAVprev+4(r7) ; Get the next
+ mr r8,r7
+ mr. r0,r5
+ bne save_snapshot32nextlocalfree
+
+ stw r5,savemisc1+4(r8) ; End the list
+ stw r6,SVsaveinusesnapshot(0) ; Save the new number of inuse saveareas
+
+ mtlr r9 ; Restore the return
+ b saveRestore32 ; Restore interrupts and translation
+
+/*
+ * *********************************************
+ * * s a v e _ s n a p s h o t _ r e s t o r e *
+ * *********************************************
+ *
+ * void save_snapshot_restore();
+ *
+ * Restore the free list from the snapshot list, and reset the processors next savearea.
+ */
+ .align 5
+ .globl EXT(save_snapshot_restore)
+
+LEXT(save_snapshot_restore)
+ mflr r9 ; get return address
+ bl saveSetup ; turn translation off, 64-bit on, load many regs
+ bf-- pf64Bitb,save_snapshot_restore32 ; skip if 32-bit processor
+
+ ; Handle 64-bit processor.
+
+save_snapshot_restore64:
+ lwz r7,SVsaveinusesnapshot(0)
+ stw r7,SVinuse(0) ; Set the new inuse count
+
+ li r6,0
+ stw r6,lclfreecnt(r10) ; None local now
+ std r6,lclfree(r10) ; None local now
+
+ ld r8,SVsavefreesnapshot(0) ; Get the restore list anchor
+ std r8,SVfree(0) ; Make it the free list anchor
+ li r5,SAVempty ; Get marker for free savearea
+
+save_snapshot_restore64nextfree:
+ addi r6,r6,1 ; Count as free
+ stb r5,SAVflags+2(r8) ; Mark savearea free
+ ld r7,savemisc1(r8) ; Get the next
+ std r7,SAVprev(r8) ; Set the next in free list
+ mr. r8,r7
+ bne save_snapshot_restore64nextfree
+
+ stw r6,SVfreecnt(0) ; Set the new free count
+
+ bl saveGet64
+ std r3,next_savearea(r10) ; Get the next savearea
+
+ mtlr r9 ; Restore the return
+ b saveRestore64 ; Restore interrupts and translation
+
+ ; Handle 32-bit processor.
+
+save_snapshot_restore32:
+ lwz r7,SVsaveinusesnapshot(0)
+ stw r7,SVinuse(0) ; Set the new inuse count
+
+ li r6,0
+ stw r6,lclfreecnt(r10) ; None local now
+ stw r6,lclfree+4(r10) ; None local now
+
+ lwz r8,SVsavefreesnapshot+4(0) ; Get the restore list anchor
+ stw r8,SVfree+4(0) ; Make it the free list anchor
+ li r5,SAVempty ; Get marker for free savearea
+
+save_snapshot_restore32nextfree:
+ addi r6,r6,1 ; Count as free
+ stb r5,SAVflags+2(r8) ; Mark savearea free
+ lwz r7,savemisc1+4(r8) ; Get the next
+ stw r7,SAVprev+4(r8) ; Set the next in free list
+ mr. r8,r7
+ bne save_snapshot_restore32nextfree
+
+ stw r6,SVfreecnt(0) ; Set the new free count
+
+ bl saveGet32
+ stw r3,next_savearea+4(r10) ; Get the next savearea
+
+ mtlr r9 ; Restore the return
+ b saveRestore32 ; Restore interrupts and translation
+
/*
* ***********************
* * s a v e _ q u e u e *
projects / apple / xnu.git / blobdiff