arch/m68k-mac/libgcc1/_negsf2.s

   1 | double floating point negation routine
   2 |
   3 | written by Kai-Uwe Bloem (I5110401@dbstu1.bitnet).
   4 | Based on a 80x86 floating point packet from comp.os.minix, written by P.Housel
   5 |
   6 |
   7 | Revision 1.1, kub 12-89 :
   8 | Created single float version for 68000
   9 |
  10 | Revision 1.0:
  11 | original 8088 code from P.S.Housel for double floats
  12
  13         .text
  14         .even
  15         .globl  __negsf2
  16
  17 __negsf2:                       | floating point negate
  18         movel   %sp@(4),%d0     | do not negate if operand is 0.0
  19         beq     L_0
  20         eorl    #0x80000000,%d0 | flip sign bit
  21 L_0:    rts