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maemo.org - Talk (https://talk.maemo.org/index.php)
-   Maemo 5 / Fremantle (https://talk.maemo.org/forumdisplay.php?f=40)
-   -   Is it possible to emulate hardfp? (https://talk.maemo.org/showthread.php?t=75868)

tekki 2011-08-19 04:29
Re: Is it possible to emulate hardfp?
 
When you call a procedure, in hardfp you put floating point values in floating point registers. In softfp you put them in integer registers for ancient compatibility reasons.

Hardfp is faster due to code doesn't have to move floating point values first from a floating point register into an integer one and then back again upon function call.

lma 2011-08-19 07:22
Re: Is it possible to emulate hardfp?
 
Quote:
Originally Posted by javispedro (Post 1072759)
No, that emulation is done by the kernel and can be done in soft, softfp and hard (albeit it obviously doesn't make sense in soft, but it does in softfp).
Strictly speaking there's also the hwcaps way, which would rock if it weren't for the ARM ABI issues.

ivgalvez 2011-08-19 08:10
Re: Is it possible to emulate hardfp?
 
Thank you all for your responses.

I wonder then, how is Meego CE so slow in the N900 if it's taking advantage of hardfp, newer kernel and gcc and better TI drivers.

don_falcone 2011-08-19 17:12
Re: Is it possible to emulate hardfp?
 
256 MB of RAM.

onion 2011-08-19 17:45
Re: Is it possible to emulate hardfp?
 
What about a chroot ?


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