svn commit: r301034 - head/sys/cddl/dev/dtrace/aarch64

[Andrew Turner]

Author: andrew
Date: Tue May 31 11:32:09 2016
New Revision: 301034
URL: https://svnweb.freebsd.org/changeset/base/301034

Log:
  Set oldfp so the check for fp == oldfp works as expected.
  
  Obtained from:	ABT Systems Ltd
  Sponsored by:	The FreeBSD Foundation

Modified:
  head/sys/cddl/dev/dtrace/aarch64/dtrace_isa.c

Modified: head/sys/cddl/dev/dtrace/aarch64/dtrace_isa.c
==============================================================================
--- head/sys/cddl/dev/dtrace/aarch64/dtrace_isa.c	Tue May 31 11:32:07 2016	(r301033)
+++ head/sys/cddl/dev/dtrace/aarch64/dtrace_isa.c	Tue May 31 11:32:09 2016	(r301034)
@@ -119,7 +119,7 @@ dtrace_getustack_common(uint64_t *pcstac
 	volatile uint16_t *flags =
 	    (volatile uint16_t *)&cpu_core[curcpu].cpuc_dtrace_flags;
 	int ret = 0;
-	uintptr_t oldfp;
+	uintptr_t oldfp = fp;
 
 	ASSERT(pcstack == NULL || pcstack_limit > 0);
 
@@ -168,6 +168,8 @@ dtrace_getustack_common(uint64_t *pcstac
 			*flags &= ~CPU_DTRACE_FAULT;
 			break;
 		}
+
+		oldfp = fp;
 	}
 
 	return (ret);