Re: [Qemu-ppc] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>

[Aleksandar Markovic]

The changes that make QEMU behavior the same as hardware behavior (in relation 
to CEIL, CVT, FLOOR, ROUND, TRUNC Mips instructions) are already contained in 
this patch.

I just mentioned Mips-A / Mips-B / SoftFloat differences as an 
explanation/observation related to the change in this patch.

Aleksandar
________________________________________
From: Maciej Rozycki
Sent: Friday, June 10, 2016 3:35 AM
To: Aleksandar Markovic
Cc: Aleksandar Markovic; address@hidden; address@hidden; address@hidden; 
address@hidden; address@hidden; address@hidden; address@hidden; address@hidden; 
address@hidden; address@hidden; Petar Jovanovic; address@hidden; Miodrag Dinic; 
address@hidden; address@hidden; Leon Alrae; address@hidden; Aurelien Jarno; 
address@hidden
Subject: RE: [PATCH v6 8/9] target-mips: Add nan2008 flavor of 
<CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>

On Fri, 10 Jun 2016, Aleksandar Markovic wrote:

> I referred to SoftFloat library in QEMU code, and the case "Operand is
> smaller than INT_MIN" is different between SoftFloat and Mips-B, while
> the case "Operand is a NaN" is different between SoftFloat and Mips-A.

 Ah, but then you just can and indeed need to fix it to match hardware.
I had it done properly with the original patches I believe.

  Maciej