v3.5.9.1

algo/sha2/sha256t.c

@@ -0,0 +1,143 @@
+#include "miner.h"
+#include "algo-gate-api.h"
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "sph-sha2.h"
+
+//#define DEBUG_ALGO
+
+
+static  sph_sha256_context sha256t_ctx __attribute__ ((aligned (64)));
+static __thread sph_sha256_context sha256t_mid  __attribute__ ((aligned (64)));
+
+void sha256t_midstate( const void* input )
+{
+    memcpy( &sha256t_mid, &sha256t_ctx, sizeof sha256t_mid );
+    sph_sha256( &sha256t_mid, input, 64 );
+}
+
+void sha256t_hash(void* output, const void* input,  uint32_t len)
+{
+        sph_sha256_context ctx_sha256 __attribute__ ((aligned (64)));
+	uint32_t _ALIGN(64) hashA[16];
+
+        const int midlen = 64;            // bytes
+        const int tail   = 80 - midlen;   // 16
+
+        memcpy( &ctx_sha256, &sha256t_mid, sizeof sha256t_mid );
+        sph_sha256( &ctx_sha256, input + midlen, tail );
+
+//        sph_sha256_init(&ctx_sha256);
+//	sph_sha256 (&ctx_sha256, input, 80);
+	sph_sha256_close( &ctx_sha256, hashA );
+
+//        sph_sha256_init(&ctx_sha256);
+        memcpy( &ctx_sha256, &sha256t_ctx, sizeof sha256t_ctx );
+	sph_sha256( &ctx_sha256, hashA, 32 );
+	sph_sha256_close( &ctx_sha256, hashA );
+
+//        sph_sha256_init(&ctx_sha256);
+        memcpy( &ctx_sha256, &sha256t_ctx, sizeof sha256t_ctx );
+	sph_sha256( &ctx_sha256, hashA, 32 );
+	sph_sha256_close( &ctx_sha256, hashA );
+
+	memcpy( output, hashA, 32 );
+}
+
+int scanhash_sha256t(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]);
+
+        sha256t_midstate( endiandata );
+
+#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);
+				sha256t_hash(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 sha256t_set_target( struct work* work, double job_diff )
+{
+ work_set_target( work, job_diff / (256.0 * opt_diff_factor) );
+}
+
+
+bool register_sha256t_algo( algo_gate_t* gate )
+{
+    sph_sha256_init( &sha256t_ctx );
+    gate->scanhash   = (void*)&scanhash_sha256t;
+    gate->hash       = (void*)&sha256t_hash;
+    gate->hash_alt   = (void*)&sha256t_hash;
+    gate->set_target = (void*)&sha256t_set_target;
+    gate->get_max64  = (void*)&get_max64_0x3ffff;
+    return true;
+}