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Re: [Qemu-devel] Misbehavior of qemu ppc tcg/translation?

From: Blue Swirl
Subject: Re: [Qemu-devel] Misbehavior of qemu ppc tcg/translation?
Date: Wed, 15 Jul 2009 19:34:51 +0300

On 7/15/09, Baojun Wang <address@hidden> wrote:
> hi, list:
>   I hope the following example is self-explained, in the assembler
>  code, we can use instruction like (instruction-as-data?):
>                 100000b4:       10 00 12 34     .long 0x10001234
>   but the ppc translator set the exception flag and raise a PROGRAM
>  exception later, however on real machine, if the above instruction is
>  never ran, then everything should be OK. Thus the ppc translator raise
>  the exception too early? (I think it should only raise the PROGRAM
>  exception until tcg really trying to exec the instruction, but not on
>  translation time)

Would the attached patch fix the problem?

Attachment: 0001-PPC-stop-code-generation-when-we-reach-a-branch.patch
Description: Source code patch

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