lib/msun/i387/s_truncl.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 __FBSDID("$FreeBSD$")
   8
   9 ENTRY(truncl)
  10         pushl   %ebp
  11         movl    %esp,%ebp
  12         subl    $8,%esp
  13
  14         fstcw   -4(%ebp)                /* store fpu control word */
  15         movw    -4(%ebp),%dx
  16         orw     $0x0c00,%dx             /* round towards -oo */
  17         movw    %dx,-8(%ebp)
  18         fldcw   -8(%ebp)                /* load modfied control word */
  19
  20         fldt    8(%ebp)                 /* round */
  21         frndint
  22
  23         fldcw   -4(%ebp)                /* restore original control word */
  24
  25         leave
  26         ret
  27 END(truncl)
  28
  29         .section .note.GNU-stack,"",%progbits