Hi Bill.

21-Apr-04 23:14:02, Bill Birrell wrote to Jasen Betts


  >> This is my first attempt at gcc style inline asm, I'd welcome any
  >> comments...

 BB> I'm really sorry, Jasen. I haven't studied gcc assembler.

that's ok. it was more a question to all readers than just to you.

 BB> but I do not know the order of operands in your assembler,

"gas" is basically backwards with the operands.

 BB> What does "movl $-2,eax" do?

 it puts -2 in eax,

 BB> If it subtracts 2 from eax, then it all looks ok to me,

the raw ecx value (after the repne;scasb) is then subtracted from that
(eax) to get the result.

 -=> Bye <=-

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