sha256 loop

Author: aeyakovenko

c_src/Makefile

@@ -0,0 +1,8 @@
+sha256_avx1:*.asm *.c
+	gcc -O4 -o $@ main.c $@.o
+
+sha256_sse4:*.asm *.c
+	gcc -O4 -Dsha256=sha256_sse4 -o $@ main.c $@.o
+
+%.o:%.asm
+	yasm -f x64 -f elf64 -X gnu -g dwarf2 -D LINUX -o $@ $^

c_src/main.c

@@ -0,0 +1,64 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <assert.h>
+#include <sys/time.h>
+
+#ifndef sha256 
+#define sha256 sha256_avx
+#endif
+
+void sha256(void *input_data, uint32_t digest[8], uint32_t num_blks);
+int main(int argc, char *argv[]) {
+    uint32_t ostate[8] = {0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19};
+    uint32_t state[8] = {0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19};
+    uint8_t block[32] = "AnatolyYakovenko11/2/201712pmPST";
+    uint32_t *blkptr = (void*)block;
+    uint64_t i;
+    FILE *f = fopen(argv[1], "a+");
+    struct timeval  start, now;
+    if(!fseek(f, -40, SEEK_END)) {
+    	assert(8 == fread(&i, 1, 8, f));
+        i = i<<20;
+    	assert(32 == fread(block, 1, 32, f));
+    	assert(0 == fseek(f, 0, SEEK_END));
+	}
+    printf("block %04x%04x%04x%04x\n", blkptr[0], blkptr[1], blkptr[2], blkptr[3]);
+    printf("      %04x%04x%04x%04x\n", blkptr[4], blkptr[5], blkptr[6], blkptr[7]);
+    printf("state %04x%04x%04x%04x\n", state[0], state[1], state[2], state[3]);
+    printf("      %04x%04x%04x%04x\n", state[4], state[5], state[6], state[7]);
+    assert(!gettimeofday(&start, 0));
+    for(i; ;++i) {
+		sha256(block, state, 1);
+        if(__builtin_expect((i & 0xfffff) == 0, 1)) {
+            double total;
+            uint64_t ix = i >> 20;
+    		assert(!gettimeofday(&now, 0));
+            total = now.tv_usec + (double)now.tv_sec * 1000000 ;
+            total = total - (start.tv_usec + (double)start.tv_sec * 1000000);
+			fwrite(&ix, 8, 1, f);
+			fwrite(blkptr, 4, 8, f);
+			fflush(f);
+    		printf("block %04x%04x%04x%04x\n", blkptr[0], blkptr[1], blkptr[2], blkptr[3]);
+    		printf("      %04x%04x%04x%04x\n", blkptr[4], blkptr[5], blkptr[6], blkptr[7]);
+    		printf("speed %lu %G %G\n", i, total, i/total);
+        }
+        blkptr[0] = state[0];
+        blkptr[1] = state[1];
+        blkptr[2] = state[2];
+        blkptr[3] = state[3];
+        blkptr[4] = state[4];
+        blkptr[5] = state[5];
+        blkptr[6] = state[6];
+        blkptr[7] = state[7];
+        state[0] = ostate[0];
+        state[1] = ostate[1];
+        state[2] = ostate[2];
+        state[3] = ostate[3];
+        state[4] = ostate[4];
+        state[5] = ostate[5];
+        state[6] = ostate[6];
+        state[7] = ostate[7];
+
+    }
+}
+