Date: Sun, 17 May 1998 01:32:15 +1000 From: Bruce Evans <bde@zeta.org.au> To: alk@pobox.com, current@FreeBSD.ORG, luoqi@watermarkgroup.com Subject: Re: as chokes on cc output Message-ID: <199805161532.BAA28755@godzilla.zeta.org.au>
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>> I'm getting messages like so:
>> /var/tmp/ccro2473.s:26621: Error: operands given don't match any known 386 instruction
>> from asm lines like so:
>> #APP
>> fldln2; fxch; fyl2x
>> #NO_APP
>> in gcc-generated code. I'm clueless w.r.t. intel asm code and binutils. What's
>> the deal? It's a bug, anyhow.
>
>These are i387 instructions. The problem is that gas doesn't know fxch is
>a shorthand for fxch %st(1). Just add the parameter %st(1), like
> __asm__("fldln2; fxch %st(1); fyl2x");
I think I understand why gcc is generating this. #APP is generated for
inline asm, and someone who doesn't know gas syntax wrote the asm :-).
Bruce
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