lib/msun/i387/s_floorl.S

   1 /*
   2  * Based on code written by J.T. Conklin <jtc@NetBSD.org>.
   3  * Public domain.
   4  */
   5
   6 #include <machine/asm.h>
   7 ENTRY(floorl)
   8         pushl   %ebp
   9         movl    %esp,%ebp
  10         subl    $8,%esp
  11
  12         fstcw   -4(%ebp)                /* store fpu control word */
  13         movw    -4(%ebp),%dx
  14         orw     $0x0400,%dx             /* round towards -oo */
  15         andw    $0xf7ff,%dx
  16         movw    %dx,-8(%ebp)
  17         fldcw   -8(%ebp)                /* load modified control word */
  18
  19         fldt    8(%ebp)                 /* round */
  20         frndint
  21
  22         fldcw   -4(%ebp)                /* restore original control word */
  23
  24         leave
  25         ret
  26 END(floorl)
  27
  28         .section .note.GNU-stack,"",%progbits