initial razzle

kernel/memory.c

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <stdint.h>
+
+void memset(char *ptr, char data, uint32_t len) {
+  for (uint32_t i = 0; i < len; i++) {
+    ptr[i] = data;
+  }
+}
+
+void memcpy(char *src, char *dst, uint32_t size) {
+  for (uint32_t i = 0; i < size; i++) {
+    dst[i] = src[i];
+  }
+}
+
+void strncpy(char *src, char *dst, uint32_t size) {
+  for (uint32_t i = 0; i < size; i++) {
+    dst[i] = src[i];
+    if (src[i] == '\0') {
+      return;
+    }
+  }
+}