From: Stefan Weil <sw@weilnetz.de>
To: qemu-devel <qemu-devel@nongnu.org>
Cc: Peter Maydell <peter.maydell@linaro.org>,
Richard Henderson <rth@twiddle.net>
Subject: [Qemu-devel] [PATCH 0/3] Add and use bit rotate functions
Date: Thu, 12 Sep 2013 21:13:10 +0200 [thread overview]
Message-ID: <1379013193-20691-1-git-send-email-sw@weilnetz.de> (raw)
The first patch was already sent to qemu-devel and is only included
here because patch 3 is based on it. Only patch 1 is needed for qemu-stable.
It looks like shift values of 0 or 32/64 work as expected because
the compiler "knows" the pattern used to implement the rotate operation,
so the code does not need special handling of some shift values.
rol8 and ror8 are currently unused. I added them nevertheless,
so they can be used when someone needs them.
[PATCH 1/3] tci: Add implementation of rotl_i64, rotr_i64
[PATCH 2/3] bitops: Add rotate functions (rol8, ror8, ...)
[PATCH 3/3] misc: Use new rotate functions
next reply other threads:[~2013-09-12 19:13 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-12 19:13 Stefan Weil [this message]
2013-09-12 19:13 ` [Qemu-devel] [PATCH 1/3] tci: Add implementation of rotl_i64, rotr_i64 Stefan Weil
2013-09-12 19:13 ` [Qemu-devel] [PATCH 2/3] bitops: Add rotate functions (rol8, ror8, ...) Stefan Weil
2013-09-12 19:24 ` Richard Henderson
2013-09-12 19:13 ` [Qemu-devel] [PATCH 3/3] misc: Use new rotate functions Stefan Weil
2013-09-12 19:25 ` Richard Henderson
2013-09-12 19:23 ` [Qemu-devel] [PATCH 0/3] Add and use bit " Richard Henderson
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