xnu-517.12.7.tar.gz

[apple/xnu.git] / osfmk / ppc / cpu_data.h

diff --git a/osfmk/ppc/cpu_data.h b/osfmk/ppc/cpu_data.h
index 5e5ef54bb670e51eeb855f68353d1719db97cae8..19f7e59d7f5e841d16f57354f02064ead0eba366 100644 (file)
--- a/osfmk/ppc/cpu_data.h
+++ b/osfmk/ppc/cpu_data.h
@@ -3,22 +3,19 @@
  *
  * @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@
  */
@@ -30,6 +27,12 @@
 #ifndef        PPC_CPU_DATA
 #define PPC_CPU_DATA
 
+typedef struct
+{
+       int             preemption_level;
+       int             simple_lock_count;
+       int             interrupt_level;
+} cpu_data_t;
 
 #define disable_preemption                     _disable_preemption
 #define enable_preemption                      _enable_preemption
@@ -38,18 +41,25 @@
 #define mp_enable_preemption                   _enable_preemption
 #define mp_enable_preemption_no_check          _enable_preemption_no_check
 
-extern cpu_data_t*                             get_cpu_data(void);
-
 extern __inline__ thread_act_t current_act(void) 
 {
        thread_act_t act;
        __asm__ volatile("mfsprg %0,1" : "=r" (act));  
        return act;
-}
+};
+
+/*
+ *     Note that the following function is ONLY guaranteed when preemption or interrupts are disabled
+ */
+extern __inline__ struct per_proc_info *getPerProc(void) 
+{
+       struct per_proc_info *perproc;
+       __asm__ volatile("mfsprg %0,0" : "=r" (perproc));  
+       return perproc;
+};
 
 #define        current_thread()        current_act()->thread
 
-extern void                                    set_machine_current_thread(thread_t);
 extern void                                    set_machine_current_act(thread_act_t);
 
 extern int                                     get_preemption_level(void);