v3.7.9

algo/x14/axiom.c

@@ -0,0 +1,86 @@
+#include "algo-gate-api.h"
+
+#include <string.h>
+#include <stdint.h>
+
+#include "algo/shabal/sph_shabal.h"
+
+static __thread uint32_t _ALIGN(64) M[65536][8];
+
+void axiomhash(void *output, const void *input)
+{
+	sph_shabal256_context ctx __attribute__ ((aligned (64)));
+	const int N = 65536;
+
+	sph_shabal256_init(&ctx);
+	sph_shabal256(&ctx, input, 80);
+	sph_shabal256_close(&ctx, M[0]);
+
+	for(int i = 1; i < N; i++) {
+		sph_shabal256_init(&ctx);
+		sph_shabal256(&ctx, M[i-1], 32);
+		sph_shabal256_close(&ctx, M[i]);
+	}
+
+	for(int b = 0; b < N; b++)
+	{
+		const int p = b > 0 ? b - 1 : 0xFFFF;
+		const int q = M[p][0] % 0xFFFF;
+		const int j = (b + q) % N;
+
+		sph_shabal256_init(&ctx);
+#if 0
+		sph_shabal256(&ctx, M[p], 32);
+		sph_shabal256(&ctx, M[j], 32);
+#else
+		uint8_t _ALIGN(64) hash[64];
+		memcpy(hash, M[p], 32);
+		memcpy(&hash[32], M[j], 32);
+		sph_shabal256(&ctx, hash, 64);
+#endif
+		sph_shabal256_close(&ctx, M[b]);
+	}
+	memcpy(output, M[N-1], 32);
+}
+
+int scanhash_axiom(int thr_id, struct work *work,
+	uint32_t max_nonce, uint64_t *hashes_done)
+{
+        uint32_t *pdata = work->data;
+        uint32_t *ptarget = work->target;
+	uint32_t _ALIGN(64) hash64[8];
+	uint32_t _ALIGN(64) endiandata[20];
+
+	const uint32_t Htarg = ptarget[7];
+	const uint32_t first_nonce = pdata[19];
+
+	uint32_t n = first_nonce;
+
+        for (int k = 0; k < 19; k++)
+                be32enc(&endiandata[k], pdata[k]);
+
+	do {
+		be32enc(&endiandata[19], n);
+		axiomhash(hash64, endiandata);
+		if (hash64[7] < Htarg && fulltest(hash64, ptarget)) {
+			*hashes_done = n - first_nonce + 1;
+			pdata[19] = n;
+			return true;
+		}
+		n++;
+
+	} while (n < max_nonce && !work_restart[thr_id].restart);
+
+	*hashes_done = n - first_nonce + 1;
+	pdata[19] = n;
+
+	return 0;
+}
+
+bool register_axiom_algo( algo_gate_t* gate )
+{
+    gate->scanhash  = (void*)&scanhash_axiom;
+    gate->hash      = (void*)&axiomhash;
+    gate->get_max64 = (void*)&get_max64_0x40LL;
+    return true;
+}