revert 64 bit update and some other shit

src/kernel/stdlib.c

@@ -0,0 +1,25 @@
+#include "../headers/stdlib.h"
+
+uint32_t strlen32(char* str) {
+    uint32_t i = 0;
+    while (*str++ != 0) {i++;}
+    return i;
+}
+void strrev32(char* str) {
+    int c, i, j;
+    for (i = 0, j = strlen32(str)-1; i < j; i++, j--) {
+        c = str[i];
+        str[i] = str[j];
+        str[j] = c;
+    }
+}
+uint8_t uitoa32(uint32_t x, char* str) {
+    uint8_t i=0;
+    while (x > 0) {
+        str[i++] = x%10+'0';
+        x /= 10;
+    }
+    str[i] = 0;
+    strrev32(str);
+    return i;
+}