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2011-08-18
, 17:24
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Posts: 3,464 |
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Joined on Feb 2010
@ Gothenburg in Sweden
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#2
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no its better go n900CE the closest is using n900CE that is already using hardfb
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2011-08-18
, 17:25
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Posts: 673 |
Thanked: 856 times |
Joined on Mar 2006
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#3
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softfp emulates fp operations on arm. It can exploit the physical implementation if such exists.
Even when physical implementation exists, it still has certain overhead.
The hardfp relies on physical implementation and removes the overhead.
In short: no
Last edited by momcilo; 2011-08-18 at 17:38.
Even when physical implementation exists, it still has certain overhead.
The hardfp relies on physical implementation and removes the overhead.
In short: no
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Last edited by momcilo; 2011-08-18 at 17:38.
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2011-08-18
, 17:36
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Posts: 370 |
Thanked: 443 times |
Joined on Jan 2006
@ Italy
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#4
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| The Following User Says Thank You to jurop88 For This Useful Post: | ||
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2011-08-18
, 17:42
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Posts: 2,355 |
Thanked: 5,249 times |
Joined on Jan 2009
@ Barcelona
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#5
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http://wiki.debian.org/ArmHardFloatPort
Fremantle = softfp
Harmattan = hard
It has nothing to do with the available or not of a floating point coprocessor. Remember that both the N900 and the N950 share a very similar A8 core.
Fremantle = softfp
Harmattan = hard
It has nothing to do with the available or not of a floating point coprocessor. Remember that both the N900 and the N950 share a very similar A8 core.
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2011-08-18
, 18:14
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Posts: 1,397 |
Thanked: 2,126 times |
Joined on Nov 2009
@ Dublin, Ireland
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#6
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Originally Posted by momcilo
But what you are saying implies that a Harmattan binary could be run on Fremantle, though slower, if dependencies, environment variables, etc are correct (like preenv do for WebOs games).
softfp emulates fp operations on arm. It can exploit the physical implementation if such exists.
Even when physical implementation exists, it still has certain overhead.
The hardfp relies on physical implementation and removes the overhead.
In short: no
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2011-08-18
, 18:23
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Posts: 1,523 |
Thanked: 1,997 times |
Joined on Jul 2011
@ not your mom's FOSS basement
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#7
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http://nullr0ute.com/2011/06/fedora-...-bring-up-fad/
http://infocenter.arm.com/help/topic...h11s02s02.html
'nuff' said.
http://infocenter.arm.com/help/topic...h11s02s02.html
'nuff' said.
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2011-08-18
, 18:26
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Posts: 3,464 |
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Joined on Feb 2010
@ Gothenburg in Sweden
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#8
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thing is both has support for hardfb but its not supported in fremantle OS.
You have to compile every damn library including GCC dependies.
However this has been done in N900CE. Means CE is more "compatible" with Harmattan.
You have to compile every damn library including GCC dependies.
However this has been done in N900CE. Means CE is more "compatible" with Harmattan.
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2011-08-18
, 21:53
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Posts: 673 |
Thanked: 856 times |
Joined on Mar 2006
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#9
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Originally Posted by ivgalvez
No it does not Harmattan and Fremantle are OS. I am talking about actual hardware.
But what you are saying implies that a Harmattan binary could be run on Fremantle, though slower, if dependencies, environment variables, etc are correct (like preenv do for WebOs games).
Softfp will exploit hardware floating point unit if such is available, if not it will handle it in software.
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2011-08-19
, 00:29
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Posts: 2,355 |
Thanked: 5,249 times |
Joined on Jan 2009
@ Barcelona
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#10
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Originally Posted by momcilo
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). So it has nothing to do with hardware but with software -- mikecomputing is mostly right.
No it does not Harmattan and Fremantle are OS. I am talking about actual hardware.
Softfp will exploit hardware floating point unit if such is available, if not it will handle it in software.
Read the Debian link I quoted above. Even the Fedora blogpost gets it wrong.
Last edited by javispedro; 2011-08-19 at 00:48.
Maybe it's a silly question but, does anybody know if it would be possible to emulate via software the hardfp needed to execute Harmattan applications in the N900?
To me it sounds like the i387 support that was emulated in the Linux kernel many years ago for computers that didn't have a coprocessor.
Anyone with a deeper knowledge of that?