[src/trunk]: src/sys/net In some implementations pc->k is signed. Cast it to ...

[alnsn <alnsn%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/46363e0d51e7
branches:  trunk
changeset: 336161:46363e0d51e7
user:      alnsn <alnsn%NetBSD.org@localhost>
date:      Sat Feb 14 21:17:05 2015 +0000

description:
In some implementations pc->k is signed. Cast it to uint32_t before comparing.

diffstat:

 sys/net/bpfjit.c |  11 ++++++-----
 1 files changed, 6 insertions(+), 5 deletions(-)

diffs (40 lines):

diff -r bb3f3fe477ea -r 46363e0d51e7 sys/net/bpfjit.c
--- a/sys/net/bpfjit.c  Sat Feb 14 21:14:56 2015 +0000
+++ b/sys/net/bpfjit.c  Sat Feb 14 21:17:05 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: bpfjit.c,v 1.41 2015/02/14 21:14:56 alnsn Exp $        */
+/*     $NetBSD: bpfjit.c,v 1.42 2015/02/14 21:17:05 alnsn Exp $        */
 
 /*-
  * Copyright (c) 2011-2014 Alexander Nasonov.
@@ -31,9 +31,9 @@
 
 #include <sys/cdefs.h>
 #ifdef _KERNEL
-__KERNEL_RCSID(0, "$NetBSD: bpfjit.c,v 1.41 2015/02/14 21:14:56 alnsn Exp $");
+__KERNEL_RCSID(0, "$NetBSD: bpfjit.c,v 1.42 2015/02/14 21:17:05 alnsn Exp $");
 #else
-__RCSID("$NetBSD: bpfjit.c,v 1.41 2015/02/14 21:14:56 alnsn Exp $");
+__RCSID("$NetBSD: bpfjit.c,v 1.42 2015/02/14 21:17:05 alnsn Exp $");
 #endif
 
 #include <sys/types.h>
@@ -1605,6 +1605,7 @@
 bpf_alu_to_sljit_op(const struct bpf_insn *pc)
 {
        const int bad = SLJIT_UNUSED;
+       const uint32_t k = pc->k;
 
        /*
         * Note: all supported 64bit arches have 32bit multiply
@@ -1617,8 +1618,8 @@
        case BPF_OR:  return SLJIT_OR;
        case BPF_XOR: return SLJIT_XOR;
        case BPF_AND: return SLJIT_AND;
-       case BPF_LSH: return (pc->k > 31) ? bad : SLJIT_SHL;
-       case BPF_RSH: return (pc->k > 31) ? bad : SLJIT_LSHR|SLJIT_INT_OP;
+       case BPF_LSH: return (k > 31) ? bad : SLJIT_SHL;
+       case BPF_RSH: return (k > 31) ? bad : SLJIT_LSHR|SLJIT_INT_OP;
        default:
                return bad;
        }