Message 284752 - Python tracker

Message284752

Author	xdegaye
Recipients	Alex.Willmer, doko, martin.panter, python-dev, twouters, vstinner, xdegaye, yan12125
Date	2017-01-05.15:40:29
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1483630829.05.0.126736142631.issue26851@psf.upfronthosting.co.za>
In-reply-to

Content
> Just tried. With my packaging scripts, CPython on ARM is compiled with -mfloat-abi=softfp -mfpu=vfpv3-d16 while libffi not. test_ctypes pass as usual. This works as expected, '-mfloat-abi=softfp' and the default '-mfloat-abi=soft' use the same ABI [1]: "Function calls are generated to pass FP arguments (float, double) in integer registers (one for float, a pair of registers for double)". [1] https://wiki.debian.org/ArmHardFloatPort/VfpComparison

Content

> Just tried. With my packaging scripts, CPython on ARM is compiled with -mfloat-abi=softfp -mfpu=vfpv3-d16 while libffi not. test_ctypes pass as usual.

This works as expected, '-mfloat-abi=softfp' and the default '-mfloat-abi=soft' use the same ABI [1]: "Function calls are generated to pass FP arguments (float, double) in integer registers (one for float, a pair of registers for double)".

[1] https://wiki.debian.org/ArmHardFloatPort/VfpComparison

History
Date	User	Action	Args
2017-01-05 15:40:29	xdegaye	set	recipients: + xdegaye, twouters, doko, vstinner, python-dev, martin.panter, Alex.Willmer, yan12125
2017-01-05 15:40:29	xdegaye	set	messageid: <1483630829.05.0.126736142631.issue26851@psf.upfronthosting.co.za>
2017-01-05 15:40:29	xdegaye	link	issue26851 messages
2017-01-05 15:40:29	xdegaye	create