[avr-gcc-list] PC (ProgrammCounter) problems

[Andreas Buhr]

Hello all!

Could you please help me?

I write assembler-apps and want to compile them with avr-as/avr-ld.
I often use lapels as arguments.
For example I wan to push the address of a function on the stack:

In AVRStudio this works:

myfunction:
        nop
        nop
        ldi     r16,    low(myfunction)
        push    r16
        ldi     r16,    high(myfunction)
        push    r16
ret

(it is a loop)

How to do this with avr-as? In avr-as 'myfunction' is exactly twice what 
it should be. So this is working code for avr-as:

myfunction:
        nop
        nop
        
        ldi     r16,    lo8(myfunction)
        ldi     r17,    hi8(myfunction)
        lsr     r17
        ror     r16
        push    r17
        push    r16
ret

But I don't want to have the lsr and ror. There are two instructions 
wasted. I am searching for something like:
ldi     r16,    lo8(myfunction>>1)
or
ldi     r16,    lo8(myfunction/2)

These two instructions give errors:
Error: invalid sections for operation on `myfunction' and `L0
'

any help?

thanks in advance

Andreas Buhr