[Sdcc-user] aligning functions in memory

[Ernst B. <e.b...@xe...>]

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