Initial upload v3.4.7

algo/fresh.c

@@ -0,0 +1,139 @@
+#include "miner.h"
+#include "algo-gate-api.h"
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "algo/shavite/sph_shavite.h"
+#include "algo/simd/sph_simd.h"
+#include "algo/echo/sph_echo.h"
+
+//#define DEBUG_ALGO
+
+extern void freshhash(void* output, const void* input, uint32_t len)
+{
+	unsigned char hash[128]; // uint32_t hashA[16], hashB[16];
+	#define hashA hash
+	#define hashB hash+64
+
+	sph_shavite512_context ctx_shavite;
+	sph_simd512_context ctx_simd;
+	sph_echo512_context ctx_echo;
+
+	sph_shavite512_init(&ctx_shavite);
+	sph_shavite512(&ctx_shavite, input, len);
+	sph_shavite512_close(&ctx_shavite, hashA);
+
+	sph_simd512_init(&ctx_simd);
+	sph_simd512(&ctx_simd, hashA, 64);
+	sph_simd512_close(&ctx_simd, hashB);
+
+	sph_shavite512_init(&ctx_shavite);
+	sph_shavite512(&ctx_shavite, hashB, 64);
+	sph_shavite512_close(&ctx_shavite, hashA);
+
+	sph_simd512_init(&ctx_simd);
+	sph_simd512(&ctx_simd, hashA, 64);
+	sph_simd512_close(&ctx_simd, hashB);
+
+	sph_echo512_init(&ctx_echo);
+	sph_echo512(&ctx_echo, hashB, 64);
+	sph_echo512_close(&ctx_echo, hashA);
+
+	memcpy(output, hash, 32);
+}
+
+int scanhash_fresh(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 len = 80;
+
+	uint32_t n = pdata[19] - 1;
+	const uint32_t first_nonce = pdata[19];
+	const uint32_t Htarg = ptarget[7];
+#ifdef _MSC_VER
+	uint32_t __declspec(align(32)) hash64[8];
+#else
+	uint32_t hash64[8] __attribute__((aligned(32)));
+#endif
+	uint32_t endiandata[32];
+
+	uint64_t htmax[] = {
+		0,
+		0xF,
+		0xFF,
+		0xFFF,
+		0xFFFF,
+		0x10000000
+	};
+	uint32_t masks[] = {
+		0xFFFFFFFF,
+		0xFFFFFFF0,
+		0xFFFFFF00,
+		0xFFFFF000,
+		0xFFFF0000,
+		0
+	};
+
+	// we need bigendian data...
+        for (int k = 0; k < 19; k++)
+                be32enc(&endiandata[k], pdata[k]);
+
+#ifdef DEBUG_ALGO
+	if (Htarg != 0)
+		printf("[%d] Htarg=%X\n", thr_id, Htarg);
+#endif
+	for (int m=0; m < 6; m++) {
+		if (Htarg <= htmax[m]) {
+			uint32_t mask = masks[m];
+			do {
+				pdata[19] = ++n;
+				be32enc(&endiandata[19], n);
+				freshhash(hash64, endiandata, len);
+#ifndef DEBUG_ALGO
+				if ((!(hash64[7] & mask)) && fulltest(hash64, ptarget)) {
+					*hashes_done = n - first_nonce + 1;
+					return true;
+				}
+#else
+				if (!(n % 0x1000) && !thr_id) printf(".");
+				if (!(hash64[7] & mask)) {
+					printf("[%d]",thr_id);
+					if (fulltest(hash64, ptarget)) {
+						*hashes_done = n - first_nonce + 1;
+						return true;
+					}
+				}
+#endif
+			} while (n < max_nonce && !work_restart[thr_id].restart);
+			// see blake.c if else to understand the loop on htmax => mask
+			break;
+		}
+	}
+
+	*hashes_done = n - first_nonce + 1;
+	pdata[19] = n;
+	return 0;
+}
+
+void fresh_set_target( struct work* work, double job_diff )
+{
+ work_set_target( work, job_diff / (256.0 * opt_diff_factor) );
+}
+
+
+bool register_fresh_algo( algo_gate_t* gate )
+{
+    algo_not_tested();
+    gate->scanhash   = (void*)&scanhash_fresh;
+    gate->hash       = (void*)&freshhash;
+    gate->hash_alt   = (void*)&freshhash;
+    gate->set_target = (void*)&fresh_set_target;
+    gate->get_max64  = (void*)&get_max64_0x3ffff;
+    return true;
+};
+