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Re: [Qemu-arm] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|C
From: |
Aleksandar Markovic |
Subject: |
Re: [Qemu-arm] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D> |
Date: |
Fri, 10 Jun 2016 17:00:33 +0000 |
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
- Re: [Qemu-arm] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>, Maciej W. Rozycki, 2016/06/07
- Re: [Qemu-arm] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>, Aleksandar Markovic, 2016/06/10
- Re: [Qemu-arm] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>, Maciej W. Rozycki, 2016/06/10
- Re: [Qemu-arm] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>,
Aleksandar Markovic <=
- Re: [Qemu-arm] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>, Maciej W. Rozycki, 2016/06/10
- Re: [Qemu-arm] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>, Leon Alrae, 2016/06/14
- Re: [Qemu-arm] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>, Maciej W. Rozycki, 2016/06/14
- Re: [Qemu-arm] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>, Aleksandar Markovic, 2016/06/20
- Re: [Qemu-arm] [PATCH v6 8/9] target-mips: Add nan2008 flavor of <CEIL|CVT|FLOOR|ROUND|TRUNC>.<L|W>.<S|D>, Maciej W. Rozycki, 2016/06/20