isa-l/erasure_code/ppc64le/gf_4vect_dot_prod_vsx.c
Marcel Cornu 300260a4d9 erasure_code: reformat using new code style
Signed-off-by: Marcel Cornu <marcel.d.cornu@intel.com>
2024-04-22 11:35:03 +02:00

126 lines
5.0 KiB
C

#include "ec_base_vsx.h"
void
gf_4vect_dot_prod_vsx(int len, int vlen, unsigned char *gftbls, unsigned char **src,
unsigned char **dest)
{
unsigned char *s, *t0, *t1, *t2, *t3;
vector unsigned char vX1, vX2, vX3, vX4;
vector unsigned char vY1, vY2, vY3, vY4, vY5, vY6, vY7, vY8;
vector unsigned char vYD, vYE, vYF, vYG, vYH, vYI, vYJ, vYK;
vector unsigned char vhi0, vlo0, vhi1, vlo1, vhi2, vlo2, vhi3, vlo3;
int i, j, head;
if (vlen < 128) {
gf_vect_mul_vsx(len, &gftbls[0 * 32 * vlen], src[0], (unsigned char *) dest[0]);
gf_vect_mul_vsx(len, &gftbls[1 * 32 * vlen], src[0], (unsigned char *) dest[1]);
gf_vect_mul_vsx(len, &gftbls[2 * 32 * vlen], src[0], (unsigned char *) dest[2]);
gf_vect_mul_vsx(len, &gftbls[3 * 32 * vlen], src[0], (unsigned char *) dest[3]);
for (j = 1; j < vlen; j++) {
gf_4vect_mad_vsx(len, vlen, j, gftbls, src[j], dest);
}
return;
}
t0 = (unsigned char *) dest[0];
t1 = (unsigned char *) dest[1];
t2 = (unsigned char *) dest[2];
t3 = (unsigned char *) dest[3];
head = len % 64;
if (head != 0) {
gf_vect_dot_prod_base(head, vlen, &gftbls[0 * 32 * vlen], src, t0);
gf_vect_dot_prod_base(head, vlen, &gftbls[1 * 32 * vlen], src, t1);
gf_vect_dot_prod_base(head, vlen, &gftbls[2 * 32 * vlen], src, t2);
gf_vect_dot_prod_base(head, vlen, &gftbls[3 * 32 * vlen], src, t3);
}
for (i = head; i < len - 63; i += 64) {
vY1 = vY1 ^ vY1;
vY2 = vY2 ^ vY2;
vY3 = vY3 ^ vY3;
vY4 = vY4 ^ vY4;
vY5 = vY5 ^ vY5;
vY6 = vY6 ^ vY6;
vY7 = vY7 ^ vY7;
vY8 = vY8 ^ vY8;
vYD = vYD ^ vYD;
vYE = vYE ^ vYE;
vYF = vYF ^ vYF;
vYG = vYG ^ vYG;
vYH = vYH ^ vYH;
vYI = vYI ^ vYI;
vYJ = vYJ ^ vYJ;
vYK = vYK ^ vYK;
unsigned char *g0 = &gftbls[0 * 32 * vlen];
unsigned char *g1 = &gftbls[1 * 32 * vlen];
unsigned char *g2 = &gftbls[2 * 32 * vlen];
unsigned char *g3 = &gftbls[3 * 32 * vlen];
for (j = 0; j < vlen; j++) {
s = (unsigned char *) src[j];
vX1 = vec_xl(0, s + i);
vX2 = vec_xl(16, s + i);
vX3 = vec_xl(32, s + i);
vX4 = vec_xl(48, s + i);
vlo0 = EC_vec_xl(0, g0);
vhi0 = EC_vec_xl(16, g0);
vlo1 = EC_vec_xl(0, g1);
vhi1 = EC_vec_xl(16, g1);
vY1 = vY1 ^ EC_vec_permxor(vhi0, vlo0, vX1);
vY2 = vY2 ^ EC_vec_permxor(vhi0, vlo0, vX2);
vYD = vYD ^ EC_vec_permxor(vhi0, vlo0, vX3);
vYE = vYE ^ EC_vec_permxor(vhi0, vlo0, vX4);
vlo2 = vec_xl(0, g2);
vhi2 = vec_xl(16, g2);
vlo3 = vec_xl(0, g3);
vhi3 = vec_xl(16, g3);
vY3 = vY3 ^ EC_vec_permxor(vhi1, vlo1, vX1);
vY4 = vY4 ^ EC_vec_permxor(vhi1, vlo1, vX2);
vYF = vYF ^ EC_vec_permxor(vhi1, vlo1, vX3);
vYG = vYG ^ EC_vec_permxor(vhi1, vlo1, vX4);
vY5 = vY5 ^ EC_vec_permxor(vhi2, vlo2, vX1);
vY6 = vY6 ^ EC_vec_permxor(vhi2, vlo2, vX2);
vYH = vYH ^ EC_vec_permxor(vhi2, vlo2, vX3);
vYI = vYI ^ EC_vec_permxor(vhi2, vlo2, vX4);
vY7 = vY7 ^ EC_vec_permxor(vhi3, vlo3, vX1);
vY8 = vY8 ^ EC_vec_permxor(vhi3, vlo3, vX2);
vYJ = vYJ ^ EC_vec_permxor(vhi3, vlo3, vX3);
vYK = vYK ^ EC_vec_permxor(vhi3, vlo3, vX4);
g0 += 32;
g1 += 32;
g2 += 32;
g3 += 32;
}
vec_xst(vY1, 0, t0 + i);
vec_xst(vY2, 16, t0 + i);
vec_xst(vY3, 0, t1 + i);
vec_xst(vY4, 16, t1 + i);
vec_xst(vY5, 0, t2 + i);
vec_xst(vY6, 16, t2 + i);
vec_xst(vY7, 0, t3 + i);
vec_xst(vY8, 16, t3 + i);
vec_xst(vYD, 32, t0 + i);
vec_xst(vYE, 48, t0 + i);
vec_xst(vYF, 32, t1 + i);
vec_xst(vYG, 48, t1 + i);
vec_xst(vYH, 32, t2 + i);
vec_xst(vYI, 48, t2 + i);
vec_xst(vYJ, 32, t3 + i);
vec_xst(vYK, 48, t3 + i);
}
return;
}