From: Peter Maydell <peter.maydell@linaro.org>
To: Blue Swirl <blauwirbel@gmail.com>
Cc: qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] [PATCH 9/9] cpu-exec.c: avoid AREG0 use
Date: Sun, 22 May 2011 18:10:29 +0100 [thread overview]
Message-ID: <BANLkTikv=ckUDFQVxY-XXGdGirshqBxBVw@mail.gmail.com> (raw)
In-Reply-To: <BANLkTikQrjADtpBeCdQy2oJPN8zyBMf2zA@mail.gmail.com>
On 22 May 2011 17:55, Blue Swirl <blauwirbel@gmail.com> wrote:
> For ARM, the handcrafted instructions below need to be changed to save also r7:
> /* stmdb sp!, { r4 - r6, r8 - r11, lr } */
> tcg_out32(s, (COND_AL << 28) | 0x092d4f70);
>
> /* ldmia sp!, { r4 - r6, r8 - r11, pc } */
> tcg_out32(s, (COND_AL << 28) | 0x08bd8f70);
That would be ...ff0 rather than ...f70 in both cases
(bottom 16 bits are a bit map of registers being saved/loaded):
/* stmdb sp!, { r4 - r11, lr } */
tcg_out32(s, (COND_AL << 28) | 0x092d4ff0);
/* ldmia sp!, { r4 - r11, pc } */
tcg_out32(s, (COND_AL << 28) | 0x08bd8ff0);
-- PMM
next prev parent reply other threads:[~2011-05-22 17:10 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-22 11:18 [Qemu-devel] [PATCH 9/9] cpu-exec.c: avoid AREG0 use Blue Swirl
2011-05-22 16:55 ` Blue Swirl
2011-05-22 17:10 ` Peter Maydell [this message]
2011-05-22 17:33 ` Laurent Desnogues
2011-05-22 18:01 ` Peter Maydell
2011-05-23 22:01 ` Aurelien Jarno
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