152043/fp_mul_comba.c

   1 long fp_mul_comba(unsigned long *tmpx, unsigned long *tmpy)
   2 {
   3         unsigned long c0, c1, c2;
   4 #if 0
   5 asm(
   6 "movl  %6,%%eax     \n\t"
   7 "mull  %7           \n\t"
   8 "addl  %%eax,%0     \n\t"
   9 "adcl  %%edx,%1     \n\t"
  10 "adcl  $0,%2        \n\t"
  11 : "=r"(c0), "=r"(c1), "=r"(c2)
  12 : "0"(c0), "1"(c1), "2"(c2), "m"(*tmpx++), "m"(*tmpy--)
  13 : "%eax","%edx","%cc"
  14 );
  15 #else
  16 asm(
  17 "foo_start:\n\t"
  18 "movl  %6,%%eax     \n\t"
  19 "mull  %7           \n\t"
  20 "addl  %%eax,%0     \n\t"
  21 "adcl  %%edx,%1     \n\t"
  22 "adcl  $0,%2        \n\t"
  23 "foo_end:\n\t"
  24 : "=r"(c0), "=r"(c1), "=r"(c2)
  25 : "0"(c0), "1"(c1), "2"(c2), "g"(*tmpx++), "g"(*tmpy--)
  26 : "%eax","%edx","%cc"
  27 );
  28 return c0 + c1 + c2;
  29 /*
  30               asm(
  31 "foo:\n\t"
  32 "movl  %6,%%eax     \n\t"
  33 "mull  %7           \n\t"
  34 "addl  %%eax,%0     \n\t"
  35 "adcl  %%edx,%1     \n\t"
  36 "adcl  $0,%2        \n\t"
  37 : "=r"(c0), "=r"(c1), "=r"(c2)
  38 : "0"(c0), "1"(c1), "2"(c2), "eax"(*tmpx++), "m"(*tmpy--)
  39 : "%edx", "%cc");
  40 */
  41 #endif
  42 }