Re: [Sdcc-user] aligning functions in memory

[Maarten B. <sou...@ds...>]

Have a look at:
https://sourceforge.net/forum/forum.php?thread_id=1321304&forum_id=1864

> Hi List,
> 
> I'm looking for a way to align a (naked) function in memory so that its 
> address is a multiple of 0x0100.
> 
> Platform is mcs51, actually an EzUSB chip.
> 
> currently I'm moving the functions start address arround by allocating space 
> just before it, like:
> 
> --------
> ...
> void _fill_before_usb_table() _naked {
> // align the usb_table to 0x100
> _asm;
> .blkb 0x4B
> _endasm;
> }
> 
> void usb_table() interrupt USB_VECT _naked critical {
> _asm;
> ...
> --------
> 
> But I have to recalc the offset by hand everytime I change the code before 
> that snippet.
> 
> Is there a way to force a function to a specific location, like
> > void test() at 0x100 { .. 
> ?
> 
> if not, is there a way to calculate the offset automatically, like
> > .blkb (0x100 - . <current address>)
> ?
> 
> 
> Thanks in advance,
> /Ernst
> 
> 
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