lib/libm/arch/i386/s_ilogb.S

   1 /*
   2  * Written by J.T. Conklin <jtc@NetBSD.org>.
   3  * Public domain.
   4  *
   5  * $NetBSD: s_ilogb.S,v 1.7 2003/07/26 19:25:02 salo Exp $
   6  */
   7
   8 #include <machine/asm.h>
   9
  10 ENTRY(ilogb)
  11 #ifdef __i386__
  12         pushl   %ebp
  13         movl    %esp,%ebp
  14         subl    $4,%esp
  15
  16         fldl    8(%ebp)
  17         fxtract
  18         fstp    %st
  19
  20         fistpl  -4(%ebp)
  21         movl    -4(%ebp),%eax
  22
  23         leave
  24 #else
  25         movsd   %xmm0,-8(%rsp)
  26         fldl    -8(%rsp)
  27         fxtract
  28         fstp    %st
  29         fistpl  -8(%rsp)
  30         movl    -8(%rsp),%eax
  31 #endif
  32         ret
  33 END(ilogb)