xnu-1456.1.26.tar.gz

[apple/xnu.git] / osfmk / ppc / interrupt.c

diff --git a/osfmk/ppc/interrupt.c b/osfmk/ppc/interrupt.c
index 0ea76f81854e9cbb7cb1da1704cb1ae54ea02fa8..e1be2769da0b6c9987c7bc09289dcf47cea7fa05 100644 (file)
--- a/osfmk/ppc/interrupt.c
+++ b/osfmk/ppc/interrupt.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -31,6 +31,7 @@
 /*
  * @APPLE_FREE_COPYRIGHT@
  */
+
 #include <kern/misc_protos.h>
 #include <kern/assert.h>
 #include <kern/thread.h>
@@ -42,10 +43,28 @@
 #include <ppc/proc_reg.h>
 #include <ppc/exception.h>
 #include <ppc/savearea.h>
+#include <ppc/vmachmon.h>
+#include <ppc/machine_cpu.h>
 #include <pexpert/pexpert.h>
 #include <sys/kdebug.h>
 
-perfCallback perfIntHook = 0;                                          /* Pointer to CHUD trap hook routine */
+volatile perfCallback perfIntHook;                                             /* Pointer to CHUD trap hook routine */
+
+#if CONFIG_DTRACE
+#if (DEVELOPMENT || DEBUG )
+#include <mach/sdt.h>
+#endif
+
+extern vm_offset_t dtrace_get_cpu_int_stack_top(void);
+
+vm_offset_t dtrace_get_cpu_int_stack_top(void)
+{
+       return getPerProc()->intstack_top_ss;
+}
+
+/* See <rdar://problem/4613924> */
+perfCallback tempDTraceIntHook; /* Pointer to DTrace fbt int handler */
+#endif
 
 void unresolved_kernel_trap(int trapno,
                                   struct savearea *ssp,
@@ -53,6 +72,8 @@ void unresolved_kernel_trap(int trapno,
                                   addr64_t dar,
                                   const char *message);
 
+unsigned int isync_mfdec(void);
+
 struct savearea * interrupt(
         int type,
         struct savearea *ssp,
@@ -66,10 +87,17 @@ struct savearea * interrupt(
 
        disable_preemption();
 
-       if(perfIntHook) {                                                       /* Is there a hook? */
-               if(perfIntHook(type, ssp, dsisr, dar) == KERN_SUCCESS) return ssp;      /* If it succeeds, we are done... */
+       perfCallback fn = perfIntHook;
+       if(fn) {                                                        /* Is there a hook? */
+               if(fn(type, ssp, dsisr, dar) == KERN_SUCCESS) return ssp;       /* If it succeeds, we are done... */
        }
        
+#if CONFIG_DTRACE
+       if(tempDTraceIntHook) {                                                 /* Is there a hook? */
+               if(tempDTraceIntHook(type, ssp, dsisr, dar) == KERN_SUCCESS) return ssp;        /* If it succeeds, we are done... */
+       }
+#endif
+
 #if 0
        {
                extern void fctx_text(void);
@@ -87,13 +115,6 @@ struct savearea * interrupt(
                        KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_DECI, 0) | DBG_FUNC_NONE,
                                  isync_mfdec(), (unsigned int)ssp->save_srr0, 0, 0, 0);
        
-#if 0
-                       if (pcsample_enable) {
-                               if (find_user_regs(current_thread()))
-                                 add_pcsamples (user_pc(current_thread()));
-                       }
-#endif
-
                        now = mach_absolute_time();                             /* Find out what time it is */
                        
                        if(now >= proc_info->pms.pmsPop) {              /* Is it time for power management state change? */
@@ -116,17 +137,29 @@ struct savearea * interrupt(
        
                case T_INTERRUPT:
                        /* Call the platform interrupt routine */
-                       counter_always(c_incoming_interrupts++);
+                       counter(c_incoming_interrupts++);
        
                        KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) | DBG_FUNC_START,
                           current_cpu, (unsigned int)ssp->save_srr0, 0, 0, 0);
        
+#if CONFIG_DTRACE && (DEVELOPMENT || DEBUG )
+                       DTRACE_INT5(interrupt__start, void *, proc_info->interrupt_nub, int, proc_info->interrupt_source, 
+                                               void *, proc_info->interrupt_target, IOInterruptHandler, proc_info->interrupt_handler,
+                                               void *, proc_info->interrupt_refCon);
+#endif
+
                        proc_info->interrupt_handler(
                                proc_info->interrupt_target, 
                                proc_info->interrupt_refCon,
                                proc_info->interrupt_nub, 
                                proc_info->interrupt_source);
        
+#if CONFIG_DTRACE && (DEVELOPMENT || DEBUG )
+                       DTRACE_INT5(interrupt__complete, void *, proc_info->interrupt_nub, int, proc_info->interrupt_source, 
+                                               void *, proc_info->interrupt_target, IOInterruptHandler, proc_info->interrupt_handler,
+                                               void *, proc_info->interrupt_refCon);
+#endif
+
                        KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) | DBG_FUNC_END,
                           0, 0, 0, 0, 0);