xnu-1228.3.13.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 f2099e2a74416530efd8e6e0d4f66aa0ccddef3f..ab77e17745af3a394182080c76d1bb11500508f0 100644 (file)
--- a/osfmk/ppc/hw_exception.s
+++ b/osfmk/ppc/hw_exception.s
@@ -1,23 +1,29 @@
 /*
 /*

- * Copyright (c) 2000-2004 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


@@ -434,7 +474,7 @@ noassist:   cmplwi  r15,0x7000                                              ; Do we have a fast path trap?
 ;                      and the savearea/pcb as the first parameter.
 ;                      It is up to the callee to enable interruptions if
 ;                      they should be.  We are in a state here where
 ;                      and the savearea/pcb as the first parameter.
 ;                      It is up to the callee to enable interruptions if
 ;                      they should be.  We are in a state here where

-;                      both interrupts and preemption is ok, but because we could
+;                      both interrupts and preemption are ok, but because we could

 ;                      be calling diagnostic code we will not enable.
 ;                      
 ;                      Also, the callee is responsible for finding any parameters
 ;                      be calling diagnostic code we will not enable.
 ;                      
 ;                      Also, the callee is responsible for finding any parameters


@@ -504,11 +544,11 @@ LEXT(ppcscret)
  */
        
 ksystrace:     
  */
        
 ksystrace:     

-                       mr              r4,r30                                          ; Pass in saved state
+                       mr              r4,r30                                                  ; Pass in saved state

                        bl      EXT(syscall_trace)
                        
                        bl      EXT(syscall_trace)
                        

-                       cmplw   r31,r29                                         ; Is this syscall in the table? 
-                       add             r31,r27,r28                                     ; Point right to the syscall table entry
+                       cmplw   r31,r29                                                 ; Is this syscall in the table? 
+                       add             r31,r27,r28                                             ; Point right to the syscall table entry

 
                        bge-    .L_call_server_syscall_exception        ; The syscall number is invalid
        
 
                        bge-    .L_call_server_syscall_exception        ; The syscall number is invalid
        


@@ -520,20 +560,20 @@ ksystrace:
 
 .L_ksystrace_munge:
                        cmplwi  r0,0                                                    ; do we have a munger to call?
 
 .L_ksystrace_munge:
                        cmplwi  r0,0                                                    ; do we have a munger to call?

-                       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
+                       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_ksystrace_trapcall                   ; just make the trap call
                        beq--   .L_ksystrace_trapcall                   ; just make the trap call

-                       bctrl                                                           ; Call the munge function
+                       bctrl                                                                   ; Call the munge function

 
 .L_ksystrace_trapcall:         
 
 .L_ksystrace_trapcall:         

-                       lwz     r0,MACH_TRAP_FUNCTION(r31)                      ; Pick up the function address
-                       mtctr   r0                                                      ; Set the function call address
-                       addi    r3,r1,FM_ARG0+ARG_SIZE                          ; Pointer to munged args
+                       lwz             r0,MACH_TRAP_FUNCTION(r31)              ; Pick up the function address
+                       mtctr   r0                                                              ; Set the function call address
+                       addi    r3,r1,FM_ARG0+ARG_SIZE                  ; Pointer to munged args

                        bctrl
 
                        bctrl
 

-                       mr              r4,r30                                          ; Pass in the savearea
-                       bl              EXT(syscall_trace_end)          ; Trace the exit of the system call     
+                       mr              r4,r30                                                  ; Pass in the savearea
+                       bl              EXT(syscall_trace_end)                  ; Trace the exit of the system call     

                        b               .L_mach_return
 
        
                        b               .L_mach_return
 
        


@@ -553,12 +593,12 @@ ksystrace:
 ; Call a function that can print out our syscall info 
 ; Note that we don t care about any volatiles yet
 ;
 ; Call a function that can print out our syscall info 
 ; Note that we don t care about any volatiles yet
 ;

-                       lwz             r10,ACT_TASK(r13)                       ; Get our task 
+                       lwz             r10,ACT_TASK(r13)                               ; Get our task 

                        lwz             r0,saver0+4(r30)
                        lwz             r0,saver0+4(r30)

-                       lis             r8,hi16(EXT(kdebug_enable))     ; Get top of kdebug_enable 
+                       lis             r8,hi16(EXT(kdebug_enable))             ; Get top of kdebug_enable 

                        lis             r28,hi16(EXT(mach_trap_table))  ; Get address of table
                        ori             r8,r8,lo16(EXT(kdebug_enable))  ; Get bottom of kdebug_enable 
                        lis             r28,hi16(EXT(mach_trap_table))  ; Get address of table
                        ori             r8,r8,lo16(EXT(kdebug_enable))  ; Get bottom of kdebug_enable 

-                       lwz             r8,0(r8)                                        ; Get 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
 
                        lwz             r7,TASK_SYSCALLS_MACH(r10)      ; Get the current count
                        neg             r31,r0                                          ; Make this positive


@@ -566,14 +606,14 @@ ksystrace:
                        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
                        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
-                       cmplwi  r8,0                                            ; Is kdebug_enable non-zero
-                       stw             r7,TASK_SYSCALLS_MACH(r10)      ; Save count
-                       bne--   ksystrace                                       ; yes, tracing enabled
+                       add             r27,r27,r3                                              ; for a total of 20x (5 words/entry)
+                       addi    r7,r7,1                                                 ; Bump TASK_SYSCALLS_MACH count
+                       cmplwi  r8,0                                                    ; Is kdebug_enable non-zero
+                       stw             r7,TASK_SYSCALLS_MACH(r10)              ; Save count
+                       bne--   ksystrace                                               ; yes, tracing enabled

                        
                        

-                       cmplwi  r31,MACH_TRAP_TABLE_COUNT       ; Is this syscall in the table? 
-                       add             r31,r27,r28                                     ; Point right to the syscall table entry
+                       cmplwi  r31,MACH_TRAP_TABLE_COUNT               ; Is this syscall in the table? 
+                       add             r31,r27,r28                                             ; Point right to the syscall table entry

 
                        bge--   .L_call_server_syscall_exception        ; The syscall number is invalid
 
 
                        bge--   .L_call_server_syscall_exception        ; The syscall number is invalid
 


@@ -592,9 +632,9 @@ ksystrace:
                        bctrl                                                           ; Call the munge function
 
 .L_kernel_syscall_trapcall:            
                        bctrl                                                           ; Call the munge function
 
 .L_kernel_syscall_trapcall:            

-                       lwz     r0,MACH_TRAP_FUNCTION(r31)                      ; Pick up the function address
-                       mtctr   r0                                                      ; Set the function call address
-                       addi    r3,r1,FM_ARG0+ARG_SIZE                          ; Pointer to munged args
+                       lwz             r0,MACH_TRAP_FUNCTION(r31)              ; Pick up the function address
+                       mtctr   r0                                                              ; Set the function call address
+                       addi    r3,r1,FM_ARG0+ARG_SIZE                  ; Pointer to munged args

 
 #if FPFLOOD
                        stfd    f31,emfp31(r25)                                 ; (TEST/DEBUG)
 
 #if FPFLOOD
                        stfd    f31,emfp31(r25)                                 ; (TEST/DEBUG)


@@ -611,12 +651,12 @@ ksystrace:
  */
 
 .L_mach_return:
  */
 
 .L_mach_return:

-                       srawi  r0,r3,31                                         ; properly extend the return code
-                       cmpi    cr0,r3,KERN_INVALID_ARGUMENT            ; deal with invalid system calls
-                       mr              r31,r16                                         ; Move the current thread pointer
-                       stw     r0, saver3(r30)                                 ; stash the high part of the return code
-                       stw     r3,saver3+4(r30)                                        ; Stash the low part of the return code
-                       beq-    cr0,.L_mach_invalid_ret                         ; otherwise fall through into the normal return path
+                       srawi  r0,r3,31                                                 ; properly extend the return code
+                       cmpi    cr0,r3,KERN_INVALID_ARGUMENT    ; deal with invalid system calls
+                       mr              r31,r16                                                 ; Move the current thread pointer
+                       stw             r0, saver3(r30)                                 ; stash the high part of the return code
+                       stw             r3,saver3+4(r30)                                ; Stash the low part of the return code
+                       beq--   cr0,.L_mach_invalid_ret                 ; otherwise fall through into the normal return path

 .L_mach_invalid_arg:           
 
 
 .L_mach_invalid_arg:           
 
 


@@ -681,12 +721,12 @@ scrnotkern:
  * we want to pass the error code back to the caller
  */
                        lwz             r0,saver0+4(r30)                                ; reload the original syscall number
  * we want to pass the error code back to the caller
  */
                        lwz             r0,saver0+4(r30)                                ; reload the original syscall number

-                       neg             r28,r0                                          ; Make this positive
-                       mr              r4,r28                                          ; save a copy
-                       slwi            r27,r4,4                                                ; multiply by 16
-                       slwi            r4,r4,2                                         ; and another 4
+                       neg             r28,r0                                                  ; Make this positive
+                       mr              r4,r28                                                  ; save a copy
+                       slwi    r27,r4,4                                                ; multiply by 16
+                       slwi    r4,r4,2                                                 ; and another 4

                        lis             r28,hi16(EXT(mach_trap_table))  ; Get address of table
                        lis             r28,hi16(EXT(mach_trap_table))  ; Get address of table

-                       add             r27,r27,r4                                      ; for a total of 20x (5 words/entry)
+                       add             r27,r27,r4                                              ; for a total of 20x (5 words/entry)

                        ori             r28,r28,lo16(EXT(mach_trap_table))      ; Get address of table
                        add             r28,r27,r28                                             ; Point right to the syscall table entry
                        lwz             r27,MACH_TRAP_FUNCTION(r28)             ; Pick up the function address
                        ori             r28,r28,lo16(EXT(mach_trap_table))      ; Get address of table
                        add             r28,r27,r28                                             ; Point right to the syscall table entry
                        lwz             r27,MACH_TRAP_FUNCTION(r28)             ; Pick up the function address


@@ -949,9 +989,33 @@ 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
 
                        mr              r3,r31
                        mr              r4,r30


@@ -964,14 +1028,7 @@ ihbootnover:                                                                              ; (TEST/DEBUG)
 
                        bl      EXT(interrupt)
 
 
                        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


@@ -982,7 +1039,7 @@ LEXT(ihandler_ret)                                                                 ; Marks our return point from debugger entry
                        lwz             r10,ACT_PER_PROC(r8)                    ; Get the per_proc block 
                
                        lwz             r7,SAVflags(r3)                                 ; Pick up the flags
                        lwz             r10,ACT_PER_PROC(r8)                    ; Get the per_proc block 
                
                        lwz             r7,SAVflags(r3)                                 ; Pick up the flags

-                       lwz             r9,SAVprev+4(r3)                                        ; Get previous save area
+                       lwz             r9,SAVprev+4(r3)                                ; Get previous save area

                        cmplwi  cr1,r8,0                                                ; Are we still initializing?
                        lwz             r12,savesrr1+4(r3)                              ; Get the MSR we will load on return 
                        andis.  r11,r7,hi16(SAVrststk)                  ; Is this the first on the stack?
                        cmplwi  cr1,r8,0                                                ; Are we still initializing?
                        lwz             r12,savesrr1+4(r3)                              ; Get the MSR we will load on return 
                        andis.  r11,r7,hi16(SAVrststk)                  ; Is this the first on the stack?


@@ -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: