X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/89b3af67bb32e691275bf6fa803d1834b2284115..4a3eedf9ecc9bbe3f3a5c6ce5e53ad199d639d32:/osfmk/ppc/interrupt.c

diff --git a/osfmk/ppc/interrupt.c b/osfmk/ppc/interrupt.c
index 0ea76f818..5ae0bc8f7 100644
--- 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 */
+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,
@@ -70,6 +91,12 @@ struct savearea * interrupt(
 		if(perfIntHook(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 +114,6 @@ 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 +136,29 @@ 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);