implemented a few utils

kernel/inc/utils/math.h

@@ -0,0 +1,22 @@
+/* Copyright (C) Antifallobst <antifallobst@systemausfall.org>
+ *
+ * NyxOS is free software:
+ * you can redistribute it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of the License,
+ * or (at your option) any later version.
+ *
+ * NyxOS is distributed in the hope that 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 <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef NYXOS_MATH_H
+#define NYXOS_MATH_H
+
+#define max(a, b)   (a > b ? a : b)
+#define min(a, b)   (a > b ? b : a)
+
+#endif //NYXOS_MATH_H

kernel/inc/utils/memory.h

@@ -0,0 +1,25 @@
+/* Copyright (C) Antifallobst <antifallobst@systemausfall.org>
+ *
+ * NyxOS is free software:
+ * you can redistribute it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of the License,
+ * or (at your option) any later version.
+ *
+ * NyxOS is distributed in the hope that 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 <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef NYXOS_MEMORY_H
+#define NYXOS_MEMORY_H
+
+#include "stdtypes.h"
+
+void  memory_copy    (void* source, void* destination, uint32_t num);
+void  memory_set     (void* destination, uint8_t data, uint32_t num);
+bool  memory_compare (void* a, void* b, uint32_t num);
+
+#endif //NYXOS_MEMORY_H

kernel/inc/utils/string.h

@@ -0,0 +1,26 @@
+/* Copyright (C) Antifallobst <antifallobst@systemausfall.org>
+ *
+ * NyxOS is free software:
+ * you can redistribute it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of the License,
+ * or (at your option) any later version.
+ *
+ * NyxOS is distributed in the hope that 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 <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef NYXOS_STRING_H
+#define NYXOS_STRING_H
+
+#include "stdtypes.h"
+
+typedef const char* string_t;
+
+uint32_t string_length (string_t str);
+bool     string_compare(string_t a, string_t b);
+
+#endif //NYXOS_STRING_H

kernel/src/kmain.c

@@ -29,7 +29,7 @@ void _start() {
 
     struct limine_terminal* terminal = terminal_request.response->terminals[0];
 
-    terminal_request.response->write(terminal, "Hello Limine", 12);
+    terminal_request.response->write(terminal, "Booting NyxOS", 13);
 
     while(true) asm("hlt");
 }

kernel/src/utils/memory.c

@@ -0,0 +1,46 @@
+/* Copyright (C) Antifallobst <antifallobst@systemausfall.org>
+ *
+ * NyxOS is free software:
+ * you can redistribute it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of the License,
+ * or (at your option) any later version.
+ *
+ * NyxOS is distributed in the hope that 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 <https://www.gnu.org/licenses/>.
+ */
+
+#include "utils/memory.h"
+
+void memory_copy (void* source, void* destination, uint32_t num) {
+    uint8_t* src_8 = (uint8_t*)source;
+    uint8_t* dst_8 = (uint8_t*)destination;
+
+    for (int i = 0; i < num; i++) {
+        dst_8[i] = src_8[i];
+    }
+}
+
+void memory_set (void* destination, uint8_t data, uint32_t num) {
+    uint8_t* dst_8 = (uint8_t*)destination;
+
+    for (int i = 0; i < num; i++) {
+        dst_8[i] = data;
+    }
+}
+
+bool memory_compare (void* a, void* b, uint32_t num) {
+    uint8_t* a_8 = (uint8_t*)a;
+    uint8_t* b_8 = (uint8_t*)b;
+
+    for (int i = 0; i < num; i++) {
+        if (a_8[i] != b_8[i]) {
+            return false;
+        }
+    }
+
+    return true;
+}

kernel/src/utils/string.c

@@ -0,0 +1,38 @@
+/* Copyright (C) Antifallobst <antifallobst@systemausfall.org>
+ *
+ * NyxOS is free software:
+ * you can redistribute it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of the License,
+ * or (at your option) any later version.
+ *
+ * NyxOS is distributed in the hope that 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 <https://www.gnu.org/licenses/>.
+ */
+
+#include "utils/string.h"
+#include "utils/memory.h"
+
+uint32_t string_length (string_t str) {
+    uint32_t n = 0;
+    char*    c = (char*)str;
+
+    while(*c != '\0') {
+        c++;
+        n++;
+    }
+
+    return n;
+}
+
+bool string_compare(string_t a, string_t b) {
+    uint32_t a_len = string_length(a);
+
+    if (a_len != string_length(b)) {
+        return false;
+    }
+    return memory_compare(a, b, a_len);
+}