[fpc-devel] Re: FPC Arm options

Florian Klaempfl florian at freepascal.org
Sun Aug 21 23:02:48 CEST 2005

Robert Reimiller wrote:

> On Sat, 20 Aug 2005 08:00:08 -0700, peter green <plugwash at bircd.org> wrote:
>> dunno but from what i can gather softfloat code is generally faster
>> than  os
>> level emulation because of the costs of trapping cpu exceptions in
>> the  os.
> That's what I have heard too. I suppose if there is already an
> emulation  software
> library that would be preferable.
> I think though I'm screwed as far as the endian issue is concerned. I
> just  checked
> out the source using svn and found the line: "            endian      
> :  endian_little;"
> for the Arm-Linux target definition. I kind of doubt that changing that
> to  endian_big and
> recompiling will work

Give it a try. If it doesn't work, it should be little effort to fix it,
but you've to recompile everything rtl etc. to get it work.

About the softfloat stuff: I'll look into it the next days, it seems we
need it for wince too.

> It turns out that Arcom's PXA255 board runs in little endian mode, 
> although it only
> has USB 1.1 which would impact the disk performance (we have to use a
> USB  to IDE adaptor).
> The Arcom linux development software actually comes with either 
> arm-linux-xxx (such as arm-linux-gcc)
> or armbe-linux-xxx (for big endian) programs. I could use GCC, but I
> don't  have any
> real interest in downgrading 35000 lines of Pascal into C.
> Actually I wish I could avoide the whole ARM/Linux thing altogether and 
> find a low-power
> 586 class board with an OS that emulates Win32 so I could just make a 
> console application in
> Delphi and run on it. Oh well.
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