sha1_round1
sha1_round1(&a, &b, &c, &d, &e, X0);
sha1_round1(&a, &b, &c, &d, &e, X1);
sha1_round1(&a, &b, &c, &d, &e, X2);
sha1_round1(&a, &b, &c, &d, &e, X3);
sha1_round1(&a, &b, &c, &d, &e, X4);
sha1_round1(&a, &b, &c, &d, &e, X5);
sha1_round1(&a, &b, &c, &d, &e, X6);
sha1_round1(&a, &b, &c, &d, &e, X7);
sha1_round1(&a, &b, &c, &d, &e, X8);
sha1_round1(&a, &b, &c, &d, &e, X9);
sha1_round1(&a, &b, &c, &d, &e, X10);
sha1_round1(&a, &b, &c, &d, &e, X11);
sha1_round1(&a, &b, &c, &d, &e, X12);
sha1_round1(&a, &b, &c, &d, &e, X13);
sha1_round1(&a, &b, &c, &d, &e, X14);
sha1_round1(&a, &b, &c, &d, &e, X15);
sha1_round1(&a, &b, &c, &d, &e, X0);
sha1_round1(&a, &b, &c, &d, &e, X1);
sha1_round1(&a, &b, &c, &d, &e, X2);
sha1_round1(&a, &b, &c, &d, &e, X3);