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From: Andrew Turner <andrew@FreeBSD.org>
Date: Wed, 26 Oct 2016 12:29:57 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r307960 - head/sys/arm64/arm64
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Author: andrew
Date: Wed Oct 26 12:29:56 2016
New Revision: 307960
URL: https://svnweb.freebsd.org/changeset/base/307960

Log:
  Use nitems to get the correct number of registers to read when dumping
  them. Previously this would walk past the end of the array and print
  whatever happened to be after the trapframe struct.
  
  MFC after:	1 week
  Sponsored by:	DARPA, AFRL

Modified:
  head/sys/arm64/arm64/trap.c

Modified: head/sys/arm64/arm64/trap.c
==============================================================================
--- head/sys/arm64/arm64/trap.c	Wed Oct 26 08:47:35 2016	(r307959)
+++ head/sys/arm64/arm64/trap.c	Wed Oct 26 12:29:56 2016	(r307960)
@@ -250,7 +250,7 @@ print_registers(struct trapframe *frame)
 {
 	u_int reg;
 
-	for (reg = 0; reg < 31; reg++) {
+	for (reg = 0; reg < nitems(frame->tf_x); reg++) {
 		printf(" %sx%d: %16lx\n", (reg < 10) ? " " : "", reg,
 		    frame->tf_x[reg]);
 	}