xnu-1504.15.3.tar.gz

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

diff --git a/osfmk/ppc/hw_vm.s b/osfmk/ppc/hw_vm.s
index bdbe03dff4968f6021d3f84e309ef5531cb32dca..bcad7dad23da773ce954b84097d4ab2e1edb8e52 100644 (file)
--- a/osfmk/ppc/hw_vm.s
+++ b/osfmk/ppc/hw_vm.s
@@ -1,31 +1,29 @@
 /*
  * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_OSREFERENCE_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.  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, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
- * Please see the License for the specific language governing rights and 
+ * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
  * limitations under the License.
- *
- * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
+ * 
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 #include <assym.s>
 #include <debug.h>
@@ -272,9 +270,16 @@ hamGotX:   mr              r3,r28                                          ; Get the pmap to insert into
                        lhz             r8,mpSpace(r31)                         ; Get the address space
                        lwz             r11,lgpPcfg(r11)                        ; Get the page config
                        mfsdr1  r7                                                      ; Get the hash table base/bounds
+
                        lwz             r4,pmapResidentCnt(r28)         ; Get the mapped page count 
+                       lwz     r12,pmapResidentMax(r28)                ; r12 = pmap->stats.resident_max
+                       addi    r4,r4,1                                         ; Bump up the mapped page count
+                       stw             r4,pmapResidentCnt(r28)         ; Set the mapped page count
+                       cmplw   r12,r4                                  ; if pmap->stats.resident_max >= pmap->stats.resident_count
+                       bge+    hamSkipMax                              ;       goto hamSkipResMax
+                       stw     r4,pmapResidentMax(r28)                 ; pmap->stats.resident_max = pmap->stats.resident_count
                        
-                       andi.   r0,r24,mpType                           ; Is this a normal mapping?
+hamSkipMax:            andi.   r0,r24,mpType                           ; Is this a normal mapping?
 
                        rlwimi  r8,r8,14,4,17                           ; Double address space
                        rlwinm  r9,r30,0,4,31                           ; Clear segment
@@ -282,10 +287,9 @@ hamGotX:   mr              r3,r28                                          ; Get the pmap to insert into
                        rlwimi  r8,r8,28,0,3                            ; Get the last nybble of the hash
                        rlwimi  r10,r29,18,0,13                         ; Shift EA[18:31] down to VSID (31-bit math works because of max hash table size)                       
                        rlwinm  r7,r7,0,16,31                           ; Isolate length mask (or count)
-                       addi    r4,r4,1                                         ; Bump up the mapped page count
                        srw             r9,r9,r11                                       ; Isolate just the page index
                        xor             r10,r10,r8                                      ; Calculate the low 32 bits of the VSID
-                       stw             r4,pmapResidentCnt(r28)         ; Set the mapped page count 
+
                        xor             r9,r9,r10                                       ; Get the hash to the PTEG
                        
                        bne--   hamDoneNP                                       ; Not a normal mapping, therefore, no physent...
@@ -5466,7 +5470,7 @@ isInv1:           lwz             r4,pmapCCtl(r3)                         ; Get the segment cache control
 ;                              We are in the exception vectors
 ;                              pf64Bitb is set up
 ;                              R3 contains the MSR we going to
-;                              We can not use R4, R13, R20, R21, R29
+;                              We can not use R4, R13, R20, R21, R25, R26, R29
 ;                              R13 is the savearea
 ;                              R29 has the per_proc
 ;