Backported the new stack crawl command ("sc", not "bt" like in NewOS) from

NewOS. Untested yet, though.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@750 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/arch/x86/thread_struct.h

@@ -10,10 +10,17 @@ struct farcall {
 	unsigned int *ss;
 };
 
+#define	IFRAME_TRACE_DEPTH 4
+
 // architecture specific thread info
 struct arch_thread {
 	struct farcall current_stack;
 	struct farcall interrupt_stack;
+
+	// used to track interrupts on this thread
+	struct iframe *iframes[IFRAME_TRACE_DEPTH];
+	int iframe_ptr;
+
 	// 512 byte floating point save point
 	uint8 fpu_state[512];
 };
@@ -22,5 +29,4 @@ struct arch_team {
 	// nothing here
 };
 
-#endif
-
+#endif	/* _KERNEL_ARCH_x86_THREAD_STRUCT_H */