LXR linux/arch/blackfin/lib/smulsi3

   1/*
   2 * Copyright 2007 Analog Devices Inc.
   3 *
   4 * Licensed under the ADI BSD license or the GPL-2 (or later)
   5 */
   6
   7.align 2
   8.global ___smulsi3_highpart;
   9.type ___smulsi3_highpart, STT_FUNC;
  10
  11#ifdef CONFIG_ARITHMETIC_OPS_L1
  12.section .l1.text
  13#else
  14.text
  15#endif
  16
  17___smulsi3_highpart:
  18        R2 = R1.L * R0.L (FU);
  19        R3 = R1.H * R0.L (IS,M);
  20        R0 = R0.H * R1.H, R1 = R0.H * R1.L (IS,M);
  21
  22        R1.L = R2.H + R1.L;
  23        cc = ac0;
  24        R2 = cc;
  25
  26        R1.L = R1.L + R3.L;
  27        cc = ac0;
  28        R1 >>>= 16;
  29        R3 >>>= 16;
  30        R1 = R1 + R3;
  31        R1 = R1 + R2;
  32        R2 = cc;
  33        R1 = R1 + R2;
  34
  35        R0 = R0 + R1;
  36        RTS;
  37
  38.size ___smulsi3_highpart, .-___smulsi3_highpart
  39