I'm writing a little bootloader and I am jumping from the interrupt
vector to the relocated interrupted vector with little functions like
this
interrupt (PORT1_VECTOR) __attribute((naked)) PORT1SR (void) {
asm("br &0xfde4" :: );
}
This compiles and works fine. But it is ugly and has a magic number
in the assembly string.
So I would like to parameterize it out of the way:
#define VECTOR_OFFSET (-512)
interrupt (PORT1_VECTOR) __attribute((naked)) PORT1SR (void) {
asm("br %[add]" :: [add] "m" (PORT1_VECTOR + VECTOR_OFFSET));
}
but this gives me an error:
main.c: In function ‘PORT1SR’:
main.c:18: error: memory input 0 is not directly addressable
What does "not directly addressable" mean?
Regards,
Mark
markra...@gmail
--
Mark Rages, Engineer
Midwest Telecine LLC
[email protected]
