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Re: [Qemu-ppc] [Qemu-devel] Incorrect handling of more PPC64 insns (PATC
From: |
Alexander Graf |
Subject: |
Re: [Qemu-ppc] [Qemu-devel] Incorrect handling of more PPC64 insns (PATCH) |
Date: |
Wed, 8 May 2013 11:32:49 +0200 |
On 08.05.2013, at 11:20, Torbjorn Granlund wrote:
> Aurelien Jarno <address@hidden> writes:
>
> 64-bit CPUs check for the L bit of comparison instruction to determine
> if the instruction is 32-bit wide, and not to the MSR SF bit.
>
> L=1 on a 32-bit CPU should generate an invalid instruction exception.
>
> No. See my previous post.
>
> The L bit is to be ignored for 32-bit CPUs, just like the original code
> did.
I see. So if the target is 64bit capable, then we distinguish by the
instruction bit, but for 32bit targets we always call the 32bit variant
regardless of the bit?
Alex
- Re: [Qemu-ppc] [Qemu-devel] Incorrect handling of more PPC64 insns, (continued)
- Re: [Qemu-ppc] Incorrect handling of more PPC64 insns (PATCH), Torbjorn Granlund, 2013/05/07
- Re: [Qemu-ppc] Incorrect handling of more PPC64 insns (PATCH), Alexander Graf, 2013/05/07
- Re: [Qemu-ppc] Incorrect handling of more PPC64 insns (PATCH), Torbjorn Granlund, 2013/05/07
- Re: [Qemu-ppc] Incorrect handling of more PPC64 insns (PATCH), Torbjorn Granlund, 2013/05/07
- Re: [Qemu-ppc] Incorrect handling of more PPC64 insns (PATCH), Alexander Graf, 2013/05/07
- Re: [Qemu-ppc] [Qemu-devel] Incorrect handling of more PPC64 insns (PATCH), Aurelien Jarno, 2013/05/08
- Re: [Qemu-ppc] [Qemu-devel] Incorrect handling of more PPC64 insns (PATCH), Alexander Graf, 2013/05/08
- Re: [Qemu-ppc] [Qemu-devel] Incorrect handling of more PPC64 insns (PATCH), Torbjorn Granlund, 2013/05/08
- Re: [Qemu-ppc] [Qemu-devel] Incorrect handling of more PPC64 insns (PATCH),
Alexander Graf <=
- Re: [Qemu-ppc] [Qemu-devel] Incorrect handling of more PPC64 insns (PATCH), Alexander Graf, 2013/05/08
- Re: [Qemu-ppc] [Qemu-devel] Incorrect handling of more PPC64 insns (PATCH), Torbjorn Granlund, 2013/05/08
- Re: [Qemu-ppc] [Qemu-devel] Incorrect handling of more PPC64 insns (PATCH), Alexander Graf, 2013/05/08