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; qemu-devel@nongnu.org; peter.mayd...@linaro.org; pro...@gmail.com; kbast...@mail.uni-paderborn.de; mark.cave-ayl...@ilande.co.uk; ag...@suse.de; blauwir...@gmail.com; jcmvb...@gmail.com; qemu-...@nongnu.org; qemu-...@nongnu.org; Petar Jovanovic; pbonz...@redhat.com; Miodrag Dinic; edgar.igles...@gmail.com; g...@mprc.pku.edu.cn; Leon Alrae; afaer...@suse.de; Aurelien Jarno; r...@twiddle.net 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
