xnu-1228.12.14.tar.gz

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

diff --git a/osfmk/ppc/hw_exception.s b/osfmk/ppc/hw_exception.s
index 4c66797de05f8eb5904771f462133ad8960d84f5..ab77e17745af3a394182080c76d1bb11500508f0 100644 (file)
--- a/osfmk/ppc/hw_exception.s
+++ b/osfmk/ppc/hw_exception.s
@@ -1,23 +1,29 @@
 /*
 /*

- * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2007 Apple Inc. All rights reserved.

  *
  *

- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_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 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.

  * 
  * 

- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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,
  * 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@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@

  */
 /*
  * @OSF_COPYRIGHT@
  */
 /*
  * @OSF_COPYRIGHT@


@@ -155,9 +161,26 @@ tvecoff:   stw             r26,FM_BACKPTR(r1)                              ; Link back to the previous frame
 #endif /* DEBUG */
 
                        mr              r30,r4
 #endif /* DEBUG */
 
                        mr              r30,r4

-                       lwz             r3,SAVtime+4(r4)
-                       addi    r4,r13,SYSTEM_TIMER
-                       bl              EXT(timer_event)
+                       lwz             r3,SAVtime(r4)
+                       lwz             r4,SAVtime+4(r4)
+                       addi    r5,r13,SYSTEM_TIMER
+                       bl              EXT(thread_timer_event)
+                       addi    r5,r25,SYSTEM_STATE
+                       bl              EXT(state_event)
+
+                       lwz             r7,ACT_TASK(r13)
+                       lwz             r8,TASK_VTIMERS(r7)
+                       cmpwi   r8,0
+                       beq++   0f
+
+                       lwz             r7,ACT_PER_PROC(r13)
+                       li              r4,AST_BSD
+                       lwz             r8,PP_PENDING_AST(r7)
+                       or              r8,r8,r4
+                       stw             r8,PP_PENDING_AST(r7)
+                       addi    r3,r13,ACT_AST
+                       bl              EXT(hw_atomic_or)
+0:

 
 /* call trap handler proper, with
  *   ARG0 = type
 
 /* call trap handler proper, with
  *   ARG0 = type


@@ -358,9 +381,26 @@ noassist:  cmplwi  r15,0x7000                                              ; Do we have a fast path trap?
                        stw             r0,ACT_MACT_KSP(r13)                    ; Mark stack as busy with 0 val 
                        stw             r15,FM_BACKPTR(r1)                              ; Link stack frame backwards
 
                        stw             r0,ACT_MACT_KSP(r13)                    ; Mark stack as busy with 0 val 
                        stw             r15,FM_BACKPTR(r1)                              ; Link stack frame backwards
 

-                       lwz             r3,SAVtime+4(r30)
-                       addi    r4,r13,SYSTEM_TIMER
-                       bl              EXT(timer_event)
+                       lwz             r3,SAVtime(r30)
+                       lwz             r4,SAVtime+4(r30)
+                       addi    r5,r13,SYSTEM_TIMER
+                       bl              EXT(thread_timer_event)
+                       addi    r5,r25,SYSTEM_STATE
+                       bl              EXT(state_event)
+               
+                       lwz             r7,ACT_TASK(r13)
+                       lwz             r8,TASK_VTIMERS(r7)
+                       cmpwi   r8,0
+                       beq++   0f
+
+                       lwz             r7,ACT_PER_PROC(r13)
+                       li              r4,AST_BSD
+                       lwz             r8,PP_PENDING_AST(r7)
+                       or              r8,r8,r4
+                       stw             r8,PP_PENDING_AST(r7)
+                       addi    r3,r13,ACT_AST
+                       bl              EXT(hw_atomic_or)
+0:

                
 #if    DEBUG
 /* If debugging, we need two frames, the first being a dummy
                
 #if    DEBUG
 /* If debugging, we need two frames, the first being a dummy


@@ -560,11 +600,11 @@ ksystrace:
                        ori             r8,r8,lo16(EXT(kdebug_enable))  ; Get bottom of kdebug_enable 
                        lwz             r8,0(r8)                                                ; Get kdebug_enable 
 
                        ori             r8,r8,lo16(EXT(kdebug_enable))  ; Get bottom of kdebug_enable 
                        lwz             r8,0(r8)                                                ; Get kdebug_enable 
 

-                       lwz             r7,TASK_SYSCALLS_MACH(r10)              ; Get the current count
-                       neg             r31,r0                                                  ; Make this positive
-                       mr              r3,r31                                                  ; save it
-                       slwi    r27,r3,4                                                ; multiply by 16
-                       slwi    r3,r3,2                                                 ; and the original by 4
+                       lwz             r7,TASK_SYSCALLS_MACH(r10)      ; Get the current count
+                       neg             r31,r0                                          ; Make this positive
+                       mr              r3,r31                                          ; save it
+                       slwi    r27,r3,4                                        ; multiply by 16
+                       slwi    r3,r3,2                                         ; and the original by 4

                        ori             r28,r28,lo16(EXT(mach_trap_table))      ; Get address of table
                        add             r27,r27,r3                                              ; for a total of 20x (5 words/entry)
                        addi    r7,r7,1                                                 ; Bump TASK_SYSCALLS_MACH count
                        ori             r28,r28,lo16(EXT(mach_trap_table))      ; Get address of table
                        add             r27,r27,r3                                              ; for a total of 20x (5 words/entry)
                        addi    r7,r7,1                                                 ; Bump TASK_SYSCALLS_MACH count


@@ -586,10 +626,10 @@ ksystrace:
 .L_kernel_syscall_munge:
                        cmplwi  r0,0                                                    ; test for null munger
                        mtctr   r0                                                              ; Set the function call address
 .L_kernel_syscall_munge:
                        cmplwi  r0,0                                                    ; test for null munger
                        mtctr   r0                                                              ; Set the function call address

-                       addi    r3,r30,saver3                                   ; Pointer to args from save area
-                       addi    r4,r1,FM_ARG0+ARG_SIZE                  ; Pointer for munged args
-                       beq--   .L_kernel_syscall_trapcall              ; null munger - skip to trap call
-                       bctrl                                                                   ; Call the munge function
+                       addi    r3,r30,saver3                                           ; Pointer to args from save area
+                       addi    r4,r1,FM_ARG0+ARG_SIZE                          ; Pointer for munged args
+                       beq--   .L_kernel_syscall_trapcall              ;   null munger - skip to trap call
+                       bctrl                                                           ; Call the munge function

 
 .L_kernel_syscall_trapcall:            
                        lwz             r0,MACH_TRAP_FUNCTION(r31)              ; Pick up the function address
 
 .L_kernel_syscall_trapcall:            
                        lwz             r0,MACH_TRAP_FUNCTION(r31)              ; Pick up the function address


@@ -949,29 +989,46 @@ ihbootnover:                                                                              ; (TEST/DEBUG)
                        mr              r31,r3
                        mr              r30,r4
 
                        mr              r31,r3
                        mr              r30,r4
 

-                       lwz             r3,SAVtime+4(r4)
-                       addi    r4,r13,SYSTEM_TIMER
-                       bl              EXT(timer_event)
+                       lwz             r3,SAVtime(r4)
+                       lwz             r4,SAVtime+4(r4)
+                       addi    r5,r25,PP_PROCESSOR
+                       lwz             r5,KERNEL_TIMER(r5)
+                       bl              EXT(thread_timer_event)
+                       addi    r6,r25,PP_PROCESSOR
+                       lwz             r5,CURRENT_STATE(r6)
+                       addi    r7,r6,USER_STATE
+                       cmplw   r5,r7
+                       bne             0f
+                       addi    r5,r6,SYSTEM_STATE
+                       bl              EXT(state_event)
+0:
+
+                       lwz             r7,ACT_TASK(r13)
+                       lwz             r8,TASK_VTIMERS(r7)
+                       cmpwi   r8,0
+                       beq++   0f
+
+                       lwz             r7,ACT_PER_PROC(r13)
+                       li              r4,AST_BSD
+                       lwz             r8,PP_PENDING_AST(r7)
+                       or              r8,r8,r4
+                       stw             r8,PP_PENDING_AST(r7)
+                       addi    r3,r13,ACT_AST
+                       bl              EXT(hw_atomic_or)
+0:

 
                        mr              r3,r31
                        mr              r4,r30
                        lwz             r5,savedsisr(r30)                               ; Get the DSISR
                        lwz             r6,savedar+4(r30)                               ; Get the DAR 
 
                        mr              r3,r31
                        mr              r4,r30
                        lwz             r5,savedsisr(r30)                               ; Get the DSISR
                        lwz             r6,savedar+4(r30)                               ; Get the DAR 

-                       
+

 #if FPFLOOD
                        stfd    f31,emfp31(r25)                                 ; (TEST/DEBUG)
 #endif
 
                        bl      EXT(interrupt)
 
 #if FPFLOOD
                        stfd    f31,emfp31(r25)                                 ; (TEST/DEBUG)
 #endif
 
                        bl      EXT(interrupt)
 

-
-/* interrupt() returns a pointer to the saved state in r3
- *
- * Ok, back from C. Disable interrupts while we restore things
- */
-                       .globl EXT(ihandler_ret)
-
-LEXT(ihandler_ret)                                                                     ; Marks our return point from debugger entry
+/* interrupt() returns a pointer to the saved state in r3 */

 
                        lis             r10,hi16(MASK(MSR_VEC))                 ; Get the vector enable
                        mfmsr   r0                                                              ; Get our MSR
 
                        lis             r10,hi16(MASK(MSR_VEC))                 ; Get the vector enable
                        mfmsr   r0                                                              ; Get our MSR


@@ -1423,13 +1480,19 @@ segtb:          mftbu   r20                                                             ; Get the upper time base
                        
                        mtdec   r13                                                             ; Set our value
 
                        
                        mtdec   r13                                                             ; Set our value
 

-chkifuser:     addi    r4,r28,SYSTEM_TIMER
-                       mftb    r3
+chkifuser:     bl              EXT(mach_absolute_time)
+                       lwz             r5,ACT_PER_PROC(r28)
+                       addi    r6,r5,PP_PROCESSOR
+                       lwz             r5,KERNEL_TIMER(r6)
+                       lwz             r29,CURRENT_STATE(r6)

                        beq--   cr7,chkifuser1                                  ; Skip this if we are going to kernel...
                        stw             r18,umwSpace(r28)                               ; Half-invalidate to force MapUserAddressWindow to reload SRs
                        beq--   cr7,chkifuser1                                  ; Skip this if we are going to kernel...
                        stw             r18,umwSpace(r28)                               ; Half-invalidate to force MapUserAddressWindow to reload SRs

-                       addi    r4,r28,USER_TIMER
+                       addi    r5,r28,USER_TIMER
+                       addi    r29,r6,USER_STATE

 
 

-chkifuser1:    bl              EXT(timer_event)
+chkifuser1:    bl              EXT(thread_timer_event)
+                       mr              r5,r29
+                       bl              EXT(state_event)

 
 chkenax:       
 
 
 chkenax: