From: Ken Aaker <kaaker@silverbacksystems.com>
Cc: linux-mips@oss.sgi.com
Subject: Re: Mangled struct hd_driveid with MIPSEB.
Date: Thu, 16 May 2002 10:07:02 -0500 [thread overview]
Message-ID: <3CE3CB16.1040503@silverbacksystems.com> (raw)
In-Reply-To: 3CE3578C.CF29A2D6@mips.com
The problem with the difference isn't that it's byte swapped, its that
the byte swapping isn't respecting the data types inside the structure.
It fixes all of the "short" entities, but it re-orders the fields that
happen to be two chars next to each other, and the "shorts" that are
part of the two "ints" for lba capacity and capacity values are in the
wrong order, even though the bytes within the "shorts" are in the right
order. So, when the fixup code in ide.h is run, the values are still wrong.
old ----
0070: 3f0010fc fb000001 80ac7e03 00000704 "?.........~....."
0080: 03007800 78007800 78000000 00000000 "..x.x.x.x......."
new---
0070: 003ffc10 00fb0100 ac80037e 00000407 ".?.........~...."
0080: 00030078 00780078 00780000 00000000 "...x.x.x.x......"
proper--- (after fix up).
0070: 003f00fb fc100001 037eac80 00000407 ".?.......~......"
0080: 00030078 00780078 00780000 00000000 "...x.x.x.x......"
Ken
next prev parent reply other threads:[~2002-05-16 15:06 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-05-15 20:42 Mangled struct hd_driveid with MIPSEB Ken Aaker
2002-05-16 6:54 ` Carsten Langgaard
2002-05-16 8:39 ` Geert Uytterhoeven
2002-05-16 10:06 ` Carsten Langgaard
2002-05-16 10:57 ` Geert Uytterhoeven
2002-05-16 15:07 ` Ken Aaker [this message]
2002-05-21 8:12 ` Carsten Langgaard
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