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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>
85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
#include "ec_base_vsx.h"
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void gf_3vect_mad_vsx(int len, int vec, int vec_i, 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, *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, head;
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s = (unsigned char *)src;
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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_mad_base(head, vec, vec_i, &gftbls[0 * 32 * vec], src, t0);
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gf_vect_mad_base(head, vec, vec_i, &gftbls[1 * 32 * vec], src, t1);
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gf_vect_mad_base(head, vec, vec_i, &gftbls[2 * 32 * vec], src, t2);
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}
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vlo0 = EC_vec_xl(0, gftbls + (((0 * vec) << 5) + (vec_i << 5)));
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vhi0 = EC_vec_xl(16, gftbls + (((0 * vec) << 5) + (vec_i << 5)));
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vlo1 = EC_vec_xl(0, gftbls + (((1 * vec) << 5) + (vec_i << 5)));
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vhi1 = EC_vec_xl(16, gftbls + (((1 * vec) << 5) + (vec_i << 5)));
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vlo2 = EC_vec_xl(0, gftbls + (((2 * vec) << 5) + (vec_i << 5)));
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vhi2 = EC_vec_xl(16, gftbls + (((2 * vec) << 5) + (vec_i << 5)));
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for (i = head; i < len - 63; i += 64) {
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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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vY1 = vec_xl(0, t0 + i);
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vY2 = vec_xl(16, t0 + i);
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vYD = vec_xl(32, t0 + i);
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vYE = vec_xl(48, t0 + 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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vYD = vYD ^ EC_vec_permxor(vhi0, vlo0, vX3);
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vYE = vYE ^ EC_vec_permxor(vhi0, vlo0, vX4);
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vY3 = vec_xl(0, t1 + i);
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vY4 = vec_xl(16, t1 + i);
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vYF = vec_xl(32, t1 + i);
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vYG = vec_xl(48, t1 + i);
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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(vYD, 32, t0 + i);
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vec_xst(vYE, 48, t0 + i);
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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 = vec_xl(0, t2 + i);
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vY6 = vec_xl(16, t2 + i);
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vYH = vec_xl(32, t2 + i);
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vYI = vec_xl(48, t2 + 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(vYF, 32, t1 + i);
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vec_xst(vYG, 48, t1 + i);
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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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vec_xst(vY5, 0, t2 + i);
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vec_xst(vY6, 16, t2 + 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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