]> git.saurik.com Git - apple/xnu.git/blobdiff - osfmk/kern/exception.c
xnu-792.6.56.tar.gz
[apple/xnu.git] / osfmk / kern / exception.c
index 306470b3683a5bb8df877114b359122178373ad9..a9dff5bccba3491c3c22a72680cc5e0cae30584f 100644 (file)
@@ -1,21 +1,22 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
  *
  * @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.
+ * 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.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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@
  */
@@ -58,6 +59,7 @@
 #include <mach/message.h>
 #include <mach/port.h>
 #include <mach/mig_errors.h>
+#include <mach/task.h>
 #include <mach/thread_status.h>
 #include <mach/exception_types.h>
 #include <ipc/port.h>
 #include <ipc/ipc_space.h>
 #include <ipc/ipc_pset.h>
 #include <ipc/ipc_machdep.h>
-#include <kern/etap_macros.h>
 #include <kern/counters.h>
 #include <kern/ipc_tt.h>
 #include <kern/task.h>
 #include <kern/thread.h>
-#include <kern/thread_swap.h>
 #include <kern/processor.h>
 #include <kern/sched.h>
 #include <kern/sched_prim.h>
@@ -104,6 +104,20 @@ unsigned long c_tsk_exc_raise = 0;
 unsigned long c_tsk_exc_raise_state = 0;
 unsigned long c_tsk_exc_raise_state_id = 0;
 
+/* forward declarations */
+void exception_deliver(
+       exception_type_t        exception,
+       exception_data_t        code,
+       mach_msg_type_number_t  codeCnt,
+       struct exception_action *excp,
+       mutex_t                 *mutex);
+
+#ifdef MACH_BSD
+kern_return_t bsd_exception(
+       exception_type_t        exception,
+       exception_data_t        code,
+       mach_msg_type_number_t  codeCnt);
+#endif /* MACH_BSD */
 
 /*
  *     Routine:        exception_deliver
@@ -125,7 +139,7 @@ exception_deliver(
        struct exception_action *excp,
        mutex_t                 *mutex)
 {
-       thread_act_t            a_self = current_act();
+       thread_t                self = current_thread();
        ipc_port_t              exc_port;
        int                     behavior;
        int                     flavor;
@@ -135,7 +149,7 @@ exception_deliver(
         *  Save work if we are terminating.
         *  Just go back to our AST handler.
         */
-       if (!a_self->active)
+       if (!self->active)
                thread_exception_return();
 
        /*
@@ -171,8 +185,8 @@ exception_deliver(
                thread_state_data_t state;
 
                c_thr_exc_raise_state++;
-               state_cnt = state_count[flavor];
-               kr = thread_getstatus(a_self, flavor, 
+               state_cnt = _MachineStateCount[flavor];
+               kr = thread_getstatus(self, flavor, 
                                      (thread_state_t)state,
                                      &state_cnt);
                if (kr == KERN_SUCCESS) {
@@ -182,7 +196,7 @@ exception_deliver(
                                                   state, state_cnt,
                                                   state, &state_cnt);
                        if (kr == MACH_MSG_SUCCESS)
-                               kr = thread_setstatus(a_self, flavor, 
+                               kr = thread_setstatus(self, flavor, 
                                                      (thread_state_t)state,
                                                      state_cnt);
                }
@@ -196,8 +210,8 @@ exception_deliver(
        case EXCEPTION_DEFAULT:
                c_thr_exc_raise++;
                kr = exception_raise(exc_port,
-                               retrieve_act_self_fast(a_self),
-                               retrieve_task_self_fast(a_self->task),
+                               retrieve_thread_self_fast(self),
+                               retrieve_task_self_fast(self->task),
                                exception,
                                code, codeCnt);
 
@@ -211,21 +225,21 @@ exception_deliver(
                thread_state_data_t state;
 
                c_thr_exc_raise_state_id++;
-               state_cnt = state_count[flavor];
-               kr = thread_getstatus(a_self, flavor,
+               state_cnt = _MachineStateCount[flavor];
+               kr = thread_getstatus(self, flavor,
                                      (thread_state_t)state,
                                      &state_cnt);
                if (kr == KERN_SUCCESS) {
                    kr = exception_raise_state_identity(exc_port,
-                               retrieve_act_self_fast(a_self),
-                               retrieve_task_self_fast(a_self->task),
+                               retrieve_thread_self_fast(self),
+                               retrieve_task_self_fast(self->task),
                                exception,
                                code, codeCnt,
                                &flavor,
                                state, state_cnt,
                                state, &state_cnt);
                    if (kr == MACH_MSG_SUCCESS)
-                       kr = thread_setstatus(a_self, flavor,
+                       kr = thread_setstatus(self, flavor,
                                              (thread_state_t)state,
                                              state_cnt);
                }
@@ -255,12 +269,12 @@ exception_deliver(
  *             Doesn't return.
  */
 void
-exception(
+exception_triage(
        exception_type_t        exception,
        exception_data_t        code,
        mach_msg_type_number_t  codeCnt)
 {
-       thread_act_t            thr_act;
+       thread_t                thread;
        task_t                  task;
        host_priv_t             host_priv;
        struct exception_action *excp;
@@ -274,9 +288,9 @@ exception(
        /*
         * Try to raise the exception at the activation level.
         */
-       thr_act = current_act();
-       mutex = mutex_addr(thr_act->lock);
-       excp = &thr_act->exc_actions[exception];
+       thread = current_thread();
+       mutex = mutex_addr(thread->mutex);
+       excp = &thread->exc_actions[exception];
        exception_deliver(exception, code, codeCnt, excp, mutex);
 
        /*
@@ -323,10 +337,9 @@ bsd_exception(
        mach_msg_type_number_t  codeCnt)
 {
        task_t                  task;
-       host_priv_t             host_priv;
        struct exception_action *excp;
        mutex_t                 *mutex;
-       thread_act_t            a_self = current_act();
+       thread_t                self = current_thread();
        ipc_port_t              exc_port;
        int                     behavior;
        int                     flavor;
@@ -343,7 +356,7 @@ bsd_exception(
         *  Save work if we are terminating.
         *  Just go back to our AST handler.
         */
-       if (!a_self->active) {
+       if (!self->active) {
                return(KERN_FAILURE);
        }
 
@@ -380,8 +393,8 @@ bsd_exception(
                thread_state_data_t state;
 
                c_thr_exc_raise_state++;
-               state_cnt = state_count[flavor];
-               kr = thread_getstatus(a_self, flavor, 
+               state_cnt = _MachineStateCount[flavor];
+               kr = thread_getstatus(self, flavor, 
                                      (thread_state_t)state,
                                      &state_cnt);
                if (kr == KERN_SUCCESS) {
@@ -391,7 +404,7 @@ bsd_exception(
                                                   state, state_cnt,
                                                   state, &state_cnt);
                        if (kr == MACH_MSG_SUCCESS)
-                               kr = thread_setstatus(a_self, flavor, 
+                               kr = thread_setstatus(self, flavor, 
                                                      (thread_state_t)state,
                                                      state_cnt);
                }
@@ -405,8 +418,8 @@ bsd_exception(
        case EXCEPTION_DEFAULT:
                c_thr_exc_raise++;
                kr = exception_raise(exc_port,
-                               retrieve_act_self_fast(a_self),
-                               retrieve_task_self_fast(a_self->task),
+                               retrieve_thread_self_fast(self),
+                               retrieve_task_self_fast(self->task),
                                exception,
                                code, codeCnt);
 
@@ -419,21 +432,21 @@ bsd_exception(
                thread_state_data_t state;
 
                c_thr_exc_raise_state_id++;
-               state_cnt = state_count[flavor];
-               kr = thread_getstatus(a_self, flavor,
+               state_cnt = _MachineStateCount[flavor];
+               kr = thread_getstatus(self, flavor,
                                      (thread_state_t)state,
                                      &state_cnt);
                if (kr == KERN_SUCCESS) {
                    kr = exception_raise_state_identity(exc_port,
-                               retrieve_act_self_fast(a_self),
-                               retrieve_task_self_fast(a_self->task),
+                               retrieve_thread_self_fast(self),
+                               retrieve_task_self_fast(self->task),
                                exception,
                                code, codeCnt,
                                &flavor,
                                state, state_cnt,
                                state, &state_cnt);
                    if (kr == MACH_MSG_SUCCESS)
-                       kr = thread_setstatus(a_self, flavor,
+                       kr = thread_setstatus(self, flavor,
                                              (thread_state_t)state,
                                              state_cnt);
                }
@@ -464,12 +477,9 @@ kern_return_t sys_perf_notify(struct task *task,
 {
        host_priv_t             hostp;
        struct exception_action *excp;
-       thread_act_t    act = current_act();
-       thread_t                thr = current_thread();
+       thread_t                thread = current_thread();
        ipc_port_t              xport;
        kern_return_t   ret;
-       int                             abrt;
-       spl_t                   ints;
        wait_interrupt_t        wsave;
 
        hostp = host_priv_self();                               /* Get the host privileged ports */
@@ -504,8 +514,8 @@ kern_return_t sys_perf_notify(struct task *task,
        wsave = thread_interrupt_level(THREAD_UNINT);   /* Make sure we aren't aborted here */
        
        ret = exception_raise(xport,                    /* Send the exception to the perf handler */
-               retrieve_act_self_fast(act),            /* Not always the dying guy */
-               retrieve_task_self_fast(act->task),     /* Not always the dying guy */
+               retrieve_thread_self_fast(thread),              /* Not always the dying guy */
+               retrieve_task_self_fast(thread->task),  /* Not always the dying guy */
                EXC_RPC_ALERT,                                          /* Unused exception type until now */
                code, codeCnt); 
                
@@ -513,4 +523,3 @@ kern_return_t sys_perf_notify(struct task *task,
 
        return(ret);                                                    /* Tell caller how it went */
 }
-