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[Qemu-devel] x86 mxcsr register
From: |
andrzej zaborowski |
Subject: |
[Qemu-devel] x86 mxcsr register |
Date: |
Wed, 1 Oct 2008 02:23:17 +0200 |
Hi,
seemingly the various MMX/SSE floating point instruction should keep
the fpu's state in the "mxcsr" register (for example rounding mode).
Currently they use env->sse_status for that, but there's also
env->mxcsr that appears to be unused except for ldmxcsr/stmxcsr. I
don't know if I'm looking in the right places. Maybe the idea was
that mxcsr should be synchronised to sse_status everytime mxcsr needs
to be used directly?
Cheers
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