lib/libm/arch/m68060/Readme.NetBSD

   1 - Import new Motorola 060SP packages in /sys/arch/m68k/060SP first.
   2 - if you had to change something in here, "make clean" here
   3 - commit Makefile Readme.NetBSD makeas.sh makeoffs.awk
   4 - "make" here
   5 - commit this directory
   6      ----------------------------------------------------------------------
   7 Method:
   8
   9 Out of the table, we create a wrapper for fplsp.S. It contains:
  10
  11 Single precision:
  12
  13         movl    sp@(4),sp@-                     4
  14         bsr     _060fplsp+theoffset             4
  15         fmovs   fp0,sp@                         4
  16         movel   sp@+,d0                         4
  17         rts                                     2
  18         (18 bytes)
  19
  20 Double precision:
  21
  22         movl    sp@(4+0),sp@-                   4
  23         movl    sp@(8+4),sp@-                   4
  24         bsr     _060fplsp+theoffset             4
  25         fmovd   fp0,sp@                         4
  26         movel   sp@+,d0                         4
  27         movel   sp@+,d1                         4
  28         rts                                     2
  29         (26 bytes)
  30
  31 For __SVR4_ABI, the code is much shorter... it reduces to a single jbra.