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https://github.com/intel/isa-l.git
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106 lines
4.0 KiB
C
106 lines
4.0 KiB
C
#include "ec_base_vsx.h"
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void
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gf_3vect_dot_prod_vsx(int len, int vlen, unsigned char *gftbls, unsigned char **src,
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unsigned char **dest)
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{
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unsigned char *s, *t0, *t1, *t2;
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vector unsigned char vX1, vX2, vX3, vX4;
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vector unsigned char vY1, vY2, vY3, vY4, vY5, vY6;
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vector unsigned char vYD, vYE, vYF, vYG, vYH, vYI;
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vector unsigned char vhi0, vlo0, vhi1, vlo1, vhi2, vlo2;
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int i, j, head;
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if (vlen < 128) {
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gf_vect_mul_vsx(len, &gftbls[0 * 32 * vlen], src[0], (unsigned char *) dest[0]);
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gf_vect_mul_vsx(len, &gftbls[1 * 32 * vlen], src[0], (unsigned char *) dest[1]);
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gf_vect_mul_vsx(len, &gftbls[2 * 32 * vlen], src[0], (unsigned char *) dest[2]);
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for (j = 1; j < vlen; j++) {
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gf_3vect_mad_vsx(len, vlen, j, gftbls, src[j], dest);
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}
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return;
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}
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t0 = (unsigned char *) dest[0];
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t1 = (unsigned char *) dest[1];
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t2 = (unsigned char *) dest[2];
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head = len % 64;
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if (head != 0) {
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gf_vect_dot_prod_base(head, vlen, &gftbls[0 * 32 * vlen], src, t0);
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gf_vect_dot_prod_base(head, vlen, &gftbls[1 * 32 * vlen], src, t1);
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gf_vect_dot_prod_base(head, vlen, &gftbls[2 * 32 * vlen], src, t2);
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}
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for (i = head; i < len - 63; i += 64) {
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vY1 = vY1 ^ vY1;
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vY2 = vY2 ^ vY2;
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vY3 = vY3 ^ vY3;
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vY4 = vY4 ^ vY4;
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vY5 = vY5 ^ vY5;
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vY6 = vY6 ^ vY6;
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vYD = vYD ^ vYD;
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vYE = vYE ^ vYE;
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vYF = vYF ^ vYF;
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vYG = vYG ^ vYG;
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vYH = vYH ^ vYH;
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vYI = vYI ^ vYI;
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unsigned char *g0 = &gftbls[0 * 32 * vlen];
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unsigned char *g1 = &gftbls[1 * 32 * vlen];
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unsigned char *g2 = &gftbls[2 * 32 * vlen];
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for (j = 0; j < vlen; j++) {
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s = (unsigned char *) src[j];
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vX1 = vec_xl(0, s + i);
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vX2 = vec_xl(16, s + i);
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vX3 = vec_xl(32, s + i);
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vX4 = vec_xl(48, s + i);
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vlo0 = EC_vec_xl(0, g0);
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vhi0 = EC_vec_xl(16, g0);
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vlo1 = EC_vec_xl(0, g1);
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vhi1 = EC_vec_xl(16, g1);
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vY1 = vY1 ^ EC_vec_permxor(vhi0, vlo0, vX1);
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vY2 = vY2 ^ EC_vec_permxor(vhi0, vlo0, vX2);
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vYD = vYD ^ EC_vec_permxor(vhi0, vlo0, vX3);
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vYE = vYE ^ EC_vec_permxor(vhi0, vlo0, vX4);
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vlo2 = vec_xl(0, g2);
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vhi2 = vec_xl(16, g2);
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vY3 = vY3 ^ EC_vec_permxor(vhi1, vlo1, vX1);
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vY4 = vY4 ^ EC_vec_permxor(vhi1, vlo1, vX2);
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vYF = vYF ^ EC_vec_permxor(vhi1, vlo1, vX3);
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vYG = vYG ^ EC_vec_permxor(vhi1, vlo1, vX4);
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vY5 = vY5 ^ EC_vec_permxor(vhi2, vlo2, vX1);
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vY6 = vY6 ^ EC_vec_permxor(vhi2, vlo2, vX2);
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vYH = vYH ^ EC_vec_permxor(vhi2, vlo2, vX3);
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vYI = vYI ^ EC_vec_permxor(vhi2, vlo2, vX4);
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g0 += 32;
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g1 += 32;
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g2 += 32;
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}
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vec_xst(vY1, 0, t0 + i);
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vec_xst(vY2, 16, t0 + i);
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vec_xst(vY3, 0, t1 + i);
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vec_xst(vY4, 16, t1 + i);
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vec_xst(vY5, 0, t2 + i);
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vec_xst(vY6, 16, t2 + i);
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vec_xst(vYD, 32, t0 + i);
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vec_xst(vYE, 48, t0 + i);
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vec_xst(vYF, 32, t1 + i);
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vec_xst(vYG, 48, t1 + i);
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vec_xst(vYH, 32, t2 + i);
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vec_xst(vYI, 48, t2 + i);
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}
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return;
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}
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