arch/blackfin/lib/smulsi3_highpart.S

   1 /*
   2  * Copyright 2007 Analog Devices Inc.
   3  *
   4  * Licensed under the Clear 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