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RE: [avr-gcc-list] Re: [avr-libc-dev] Constant address to programmemory
RE: [avr-gcc-list] Re: [avr-libc-dev] Constant address to programmemory in C
Fri, 23 Nov 2007 10:21:10 -0700
> -----Original Message-----
> org] On Behalf Of Shaun Jackman
> Sent: Thursday, November 22, 2007 1:57 PM
> To: Joerg Wunsch; address@hidden
> Subject: [avr-gcc-list] Re: [avr-libc-dev] Constant address
> to programmemory in C
> On Nov 22, 2007 1:44 PM, Joerg Wunsch <address@hidden> wrote:
> > As Shaun Jackman wrote:
> > > The assembler has a pm(a) operator for this very reason.
> It would be
> > > useful for avr-libc to have a similar macro.
> > This rather smells like a compiler bug to me, than something where
> > library support would be a real help. If the compiler offers the
> > feature to jump to an arbitrary address using "goto", then it's
> > responsible to translate that code into whatever is necessary to
> > accomplish the goal. The tools always and only count in byte
> > addresses.
> I agree. Unfortunately, there's a bunch of code out there now that
> assumes goto *x needs to be fixed up with a goto *(x/2).
There is already a GCC bug filed for the above problem.