arch/blackfin/lib/umulsi3_highpart.S

   1 .align 2
   2 .global ___umulsi3_highpart;
   3 .type ___umulsi3_highpart, STT_FUNC;
   4
   5 #ifdef CONFIG_ARITHMETIC_OPS_L1
   6 .section .l1.text
   7 #else
   8 .text
   9 #endif
  10
  11 ___umulsi3_highpart:
  12         R2 = R1.H * R0.H, R3 = R1.L * R0.H (FU);
  13         R0 = R1.L * R0.L, R1 = R1.H * R0.L (FU);
  14         R0 >>= 16;
  15         /* Unsigned multiplication has the nice property that we can
  16            ignore carry on this first addition.  */
  17         R0 = R0 + R3;
  18         R0 = R0 + R1;
  19         cc = ac0;
  20         R1 = cc;
  21         R1 = PACK(R1.l,R0.h);
  22         R0 = R1 + R2;
  23         RTS;
  24
  25 .size ___umulsi3_highpart, .-___umulsi3_highpart