Re: Need help porting GMP to AMD64

[Joseph Ruscio <jruscio@vt.edu>]

x86 inline assembly often makes use of the 32 bit registers that start with an 
'e' i.e %esp, %ebp. When compiled for 64-bit the registers names are 
different with the 'e' registers now being 'r' registers i.e. %rsp, %rbp. 
This is a gross oversimplification as the number of registers and sometimes 
their functions have also changed. The ABI AMD64 supplement contains a list 
of all changes. If you google for it you should be able to find it.

cheers,
joe

On Tuesday 10 February 2004 10:24 am, Falk Hueffner wrote:
> John Goerzen <jgoerzen@complete.org> writes:
> > I am trying to compile gmp-4.1.2 on AMD64 and am encountering this
> > error:
> >
> > /tmp/ccu7I0tJ.s: Assembler messages:
> > /tmp/ccu7I0tJ.s:42: Error: suffix or operands invalid for `bsf'
>
> Wrong inline assembly most likely. Please provide the preprocessed
> asm() statement with the bsf, and the corresponding line from the .s
> file.
>
> --
> 	Falk

-- 
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Joseph F. Ruscio
PhD Candidate
Computing Systems Research Lab
Virginia Tech
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