sysclk: remove old hocclk, bump version

Source/hoc-clk/common/src/crc32.cpp

@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) Souldbminer, Lightos_ and Horizon OC Contributors
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * 
+ */
+
+#include <crc32.h>
+
+namespace crc32 {
+    uint32_t crc32(const uint8_t *data, size_t length) {
+        uint32_t crc = 0xFFFFFFFF;
+        
+        for (size_t i = 0; i < length; i++) {
+            crc ^= data[i];
+            for (int j = 0; j < 8; j++) {
+                crc = (crc >> 1) ^ (0xEDB88320 & -(crc & 1));
+            }
+        }
+        return ~crc;
+    }
+
+    uint32_t checksum_file(const char *filename) {
+        FILE *file = fopen(filename, "rb");
+        if (!file) {
+            perror("[crc32] Error opening file");
+            return 0;
+        }
+        
+        uint8_t buffer[1024];
+        uint32_t crc = 0xFFFFFFFF;
+        size_t bytes_read;
+        
+        while ((bytes_read = fread(buffer, 1, sizeof(buffer), file)) > 0) {
+            for (size_t i = 0; i < bytes_read; i++) {
+                crc ^= buffer[i];
+                for (int j = 0; j < 8; j++) {
+                    crc = (crc >> 1) ^ (0xEDB88320 & -(crc & 1));
+                }
+            }
+        }
+        
+        fclose(file);
+        return ~crc;
+    }
+}