Re: [avr-gcc-list] hi8, lo8, hh8 etc?

[E. Weddington]

Per Arnold Blåsmo wrote:

> Hi,
>
> I have had to do some inline assembly and needed to use some addresses 
> and pointer to those etc.
>
> I "stumbled" over some pseudo-opcodes that I can't see are documented 
> anyplace and that seems to be useful.
> I have some example code programed with IAR that uses opcodes like:
>
>        LDI     R17, Low(hwrd(var))    // Address Bits 16->23 of
>        OUT     RAMPX, R17 // the field in var
>        LDI     XH, High(lwrd(var))    // Address Bits 08->15
>        LDI     XL, Low(lwrd(var))     // Address Bits 00->07
> 'var' has a 24bit address.
> Trying to find something like this for avr-gcc I found (binutils file 
> gas/config/tc-avr.c):
> -hh8
> -pm_hh8
> -hi8
> -pm_hi8
> -lo8
> -pm-lo8
> -hlo8
> -hhi8
>
> http://www.nongnu.org/avr-libc/user-manual/assembler.html mentions 
> lo8, hi8 and pm, but does not document those.
> Does any documentation exist or?

No docs exist AFAIK. The source is it.

Eric