Subversion Repositories openrisc_2011-10-31

#include <altivec.h>

vector unsigned char

permute_128(vector unsigned char input)

{

  vector unsigned char result, new_bit;

  vector unsigned char select2 = ((vector unsigned char){2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2});

  vector unsigned char select3 = ((vector unsigned char){4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4});

  vector unsigned char select4 = ((vector unsigned char){8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8});

  vector unsigned char select5 = ((vector unsigned char){16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16});

  vector unsigned char select6 = ((vector unsigned char){32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32});

  vector unsigned char select7 = ((vector unsigned char){64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64});

  vector unsigned char select8 = ((vector unsigned char){128,128,128,128,128,128,128,128,128,128,128,128,128,128,128,128});

  vector unsigned char control1

    = ((vector unsigned char){15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0});

  vector unsigned char control2

    = ((vector unsigned char){15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0});

  vector unsigned char control3

    = ((vector unsigned char){15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0});

  vector unsigned char control4

    = ((vector unsigned char){15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0});

  vector unsigned char control5

    = ((vector unsigned char){15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0});

  vector unsigned char control6

    = ((vector unsigned char){15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0});

  vector unsigned char control7

    = ((vector unsigned char){15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0});

  vector unsigned char control8

    = ((vector unsigned char){15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0});

  vector unsigned char rotate1 = ((vector unsigned char){1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1});

  vector unsigned char rotate2 = ((vector unsigned char){3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3});

  vector unsigned char rotate3 = ((vector unsigned char){5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5});

  vector unsigned char rotate4 = ((vector unsigned char){7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7});

  vector unsigned char rotate5 = ((vector unsigned char){1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1});

  vector unsigned char rotate6 = ((vector unsigned char){3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3});

  vector unsigned char rotate7 = ((vector unsigned char){5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5});

  vector unsigned char rotate8 = ((vector unsigned char){7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7});

  result = vec_vperm(input, input, control1);

  result = vec_rl(result, rotate1);

  new_bit = vec_vperm(input, input, control2);

  new_bit = vec_rl(new_bit, rotate2);

  result = vec_sel(result, new_bit, select2);

  new_bit = vec_vperm(input, input, control3);

  new_bit = vec_rl(new_bit, rotate3);

  result = vec_sel(result, new_bit, select3);

  new_bit = vec_vperm(input, input, control4);

  new_bit = vec_rl(new_bit, rotate4);

  result = vec_sel(result, new_bit, select4);

  new_bit = vec_vperm(input, input, control5);

  new_bit = vec_rl(new_bit, rotate5);

  result = vec_sel(result, new_bit, select5);

  new_bit = vec_vperm(input, input, control6);

  new_bit = vec_rl(new_bit, rotate6);

  result = vec_sel(result, new_bit, select6);

  new_bit = vec_vperm(input, input, control7);

  new_bit = vec_rl(new_bit, rotate7);

  result = vec_sel(result, new_bit, select7);

  new_bit = vec_vperm(input, input, control8);

  new_bit = vec_rl(new_bit, rotate8);

  result = vec_sel(result, new_bit, select8);

  return result;

}

int main()

{

  vector unsigned char input

    = ((vector unsigned char){0,1,2,4,8,16,32,64,128,0,1,2,4,8,16,32});

  vector unsigned char result = permute_128(input);

  return 0;

}