This is the mail archive of the
mailing list for the binutils project.
Re: Gas can't handle prefix generated by gcc
"H. J. Lu" <email@example.com> writes:
> On Fri, Jul 23, 2004 at 12:49:48PM -0700, Zack Weinberg wrote:
>> Zack Weinberg <firstname.lastname@example.org> writes:
>> > "H. J. Lu" <email@example.com> writes:
>> >> It seems that gcc uses a prefix syntax which gas doesn't handle. Does
>> >> gcc always use " ; " as prefix separator?
>> > Yes. It does that for cs/ds on branch hints, it does that for "rep"
>> > on string instructions, it does that for "lock" on atomic updates.
>> Correction - it uses either " ; " or \n\t in all the above cases.
> It looks like a gcc bug to me. Assembler has a way to define prefixes
> for an instruction. Unfortunately, gcc uses something else. I will
> close the assembler bug.
Not so fast. Is the PREFIX_SEPARATOR mechanism (a) supported by GAS
since time immemorial, and (b) supported by all other i386 assemblers
since time immemorial? If *either* of those is not true, GCC can't