[src/trunk]: src/sys/arch/atari/stand/installboot Revert previous again.

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

details:   https://anonhg.NetBSD.org/src/rev/cfdfaea6210d
branches:  trunk
changeset: 333966:cfdfaea6210d
user:      tsutsui <tsutsui%NetBSD.org@localhost>
date:      Mon Nov 24 07:34:45 2014 +0000

description:
Revert previous again.

There are claims that it still violates strict-aliasing rule and
it is no sense to just appease compiler by incorrect implementation.

diffstat:

 sys/arch/atari/stand/installboot/installboot.c |  11 +++--------
 1 files changed, 3 insertions(+), 8 deletions(-)

diffs (32 lines):

diff -r 827bb60138ad -r cfdfaea6210d sys/arch/atari/stand/installboot/installboot.c
--- a/sys/arch/atari/stand/installboot/installboot.c    Mon Nov 24 04:06:13 2014 +0000
+++ b/sys/arch/atari/stand/installboot/installboot.c    Mon Nov 24 07:34:45 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: installboot.c,v 1.32 2014/11/16 13:47:52 tsutsui Exp $ */
+/*     $NetBSD: installboot.c,v 1.33 2014/11/24 07:34:45 tsutsui Exp $ */
 
 /*
  * Copyright (c) 1995 Waldi Ravens
@@ -467,10 +467,6 @@
     struct disklabel *label, u_int magic)
 {
        int              fd;
-       union {
-               struct bootblock *bbp;
-               uint16_t *word;         /* to fill cksum word */
-       } bbsec;
 
        memset(bb, 0, sizeof(*bb));
 
@@ -502,9 +498,8 @@
        setIDEpar(bb->bb_xxboot, sizeof(bb->bb_xxboot));
 
        /* set AHDI checksum */
-       bbsec.bbp = bb;
-       bbsec.word[255] = 0;
-       bbsec.word[255] = 0x1234 - abcksum(bb->bb_xxboot);
+       *((u_int16_t *)bb->bb_xxboot + 255) = 0;
+       *((u_int16_t *)bb->bb_xxboot + 255) = 0x1234 - abcksum(bb->bb_xxboot);
 
        if (verbose) {
                printf("Primary   boot loader: %s\n", xxb);