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180c74aefd
1) Implement the ErasureCode function in Altivec Intrinsics 2) Coding style update Change-Id: I2c81d035f4083e9b011dbf3b741f628813b68606 Thanks-to: Daniel Axtens <dja@axtens.net> Signed-off-by: Hong Bo Peng <penghb@cn.ibm.com>
86 lines
2.0 KiB
C
86 lines
2.0 KiB
C
#include "ec_base_vsx.h"
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void gf_vect_dot_prod_vsx(int len, int vlen, unsigned char *gftbls,
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unsigned char **src, unsigned char *dest)
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{
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unsigned char *s, *t0;
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vector unsigned char vX1, vY1;
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vector unsigned char vX2, vY2;
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vector unsigned char vX3, vY3;
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vector unsigned char vX4, vY4;
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vector unsigned char vX5, vY5;
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vector unsigned char vX6, vY6;
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vector unsigned char vX7, vY7;
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vector unsigned char vX8, vY8;
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vector unsigned char vhi0, vlo0;
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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);
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for (j = 1; j < vlen; j++) {
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gf_vect_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;
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head = len % 128;
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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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}
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for (i = head; i < len - 127; i += 128) {
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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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vY7 = vY7 ^ vY7;
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vY8 = vY8 ^ vY8;
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unsigned char *g0 = &gftbls[0 * 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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vX5 = vec_xl(64, s + i);
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vX6 = vec_xl(80, s + i);
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vX7 = vec_xl(96, s + i);
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vX8 = vec_xl(112, s + i);
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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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vY3 = vY3 ^ EC_vec_permxor(vhi0, vlo0, vX3);
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vY4 = vY4 ^ EC_vec_permxor(vhi0, vlo0, vX4);
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vY5 = vY5 ^ EC_vec_permxor(vhi0, vlo0, vX5);
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vY6 = vY6 ^ EC_vec_permxor(vhi0, vlo0, vX6);
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vY7 = vY7 ^ EC_vec_permxor(vhi0, vlo0, vX7);
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vY8 = vY8 ^ EC_vec_permxor(vhi0, vlo0, vX8);
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g0 += 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, 32, t0 + i);
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vec_xst(vY4, 48, t0 + i);
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vec_xst(vY5, 64, t0 + i);
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vec_xst(vY6, 80, t0 + i);
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vec_xst(vY7, 96, t0 + i);
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vec_xst(vY8, 112, t0 + i);
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}
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return;
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}
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