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Re: [Qemu-devel] [Qemu-ppc] [V7 PATCH 00/18] target-ppc: VSX Stage 4


From: Alexander Graf
Subject: Re: [Qemu-devel] [Qemu-ppc] [V7 PATCH 00/18] target-ppc: VSX Stage 4
Date: Mon, 27 Jan 2014 16:52:16 +0100

On 15.01.2014, at 15:10, Tom Musta <address@hidden> wrote:

> This is the fourth and final series of patches that add emulation support
> to QEMU for the PowerPC Vector Scalar Extension (VSX).
> 
> This series adds the instructions that were newly introduced with Power ISA
> V2.07.  This includes 3 scalar load instructions, 2 scalar store instructions,
> 7 standard single precision scalar arithmetic instructions, 8 scalar single
> precision fused multiply/add instructions, two integer-to-single-precision
> conversion instructions and 3 vector logical instructions.
> 
> The single-precision scalar arithmetic instructions all interpret the most
> significant 64 bits of a VSR as a single precision floating point number
> stored in double precision format (similar to the standard PowerPC floating
> point single precision instructions).  Thus a common theme in the supporting
> code is rounding of an intermediate double-precision number to single 
> precision.

Thanks, applied all to ppc-next.


Alex




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