lib/i386/em/em_cfi.s

   1 .sect .text; .sect .rom; .sect .data; .sect .bss
   2 .define .cfi
   3
   4         .sect .text
   5 .cfi:
   6         mov     bx,sp
   7         fstcw   4(bx)
   8         wait
   9         mov     dx,4(bx)
  10         or      4(bx),0xc00     ! truncating mode
  11         wait
  12         fldcw   4(bx)
  13         cmp     8(bx),4
  14         jne     2f
  15                                 ! loc 4 loc ? cfi
  16         flds    12(bx)
  17         fistpl  12(bx)
  18 1:
  19         mov     4(bx),dx
  20         wait
  21         fldcw   4(bx)
  22         ret
  23 2:
  24                                 ! loc 8 loc ? cfi
  25         fldd    12(bx)
  26         fistpl  16(bx)
  27         jmp     1b