v0.5.3-pre: refactor syscall handlers and introduce libterm

Moved handlers to syscalls/, implemented libterm (malloc, stdio)

userspace/debug/CMakeLists.txt

@@ -0,0 +1,6 @@
+cmake_minimum_required(VERSION 3.20)
+project(termOSdbg LANGUAGES C)
+
+file(GLOB_RECURSE debug_SOURCES "src/*.c")
+
+add_termos_executable(debug "${debug_SOURCES}")

userspace/debug/src/main.c

@@ -0,0 +1,85 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+// Copyright (c) 2026 0xKarinyash
+
+#include <stdio.h>
+#include <malloc.h>
+
+#define VECTOR_BUFFER_SIZE 8
+
+typedef struct {
+    i32* data;
+    u64 size;
+    u64 capacity;
+} Vector;
+
+void vector_init(Vector* vec) {
+    vec->data = nullptr;
+    vec->size = 0;
+    vec->capacity = 0;
+}
+
+u8 vector_append(Vector* vec, const i32 num) {
+    if (vec->size >= vec->capacity) {
+        u64 new_cap = (vec->capacity == 0) ? VECTOR_BUFFER_SIZE : vec->capacity * 2;
+
+        i32* new_data = realloc(vec->data, new_cap * sizeof(i32));
+        if (!new_data) return 2; // Out of memory
+
+        vec->data = new_data;
+        vec->capacity = new_cap;
+    }
+    vec->data[vec->size] = num;
+    vec->size++;
+
+    return 0;
+}
+
+void vector_reset(Vector* vec) {
+    vec->size = 0;
+}
+
+u8 vector_reserve(Vector* vec, u64 new_cap) {
+    if (new_cap <= vec->capacity) return 0;
+    i32* new_data = realloc(vec->data, new_cap * sizeof(i32));
+    if (!new_data) return 2;
+
+    vec->data = new_data;
+    vec->capacity = new_cap;
+
+    return 0;
+}
+
+void vector_free(Vector* vec) {
+    free(vec->data);
+    vec->data = nullptr;
+    vec->size = vec->capacity = 0;
+}
+
+void render_list(Vector* numbers) {
+    printf("\nNumbers [%d/%d]: [", numbers->size, numbers->capacity);
+    if (numbers->size == 0) printf("]");
+    for (u64 i = 0; i < numbers->size; i++) {
+        printf("%d", numbers->data[i]);
+        if (i + 1 >= numbers->size) {
+            printf("]");
+            break;
+        }
+        printf(", ");
+    }
+}
+
+int main() {
+    Vector nums;
+    vector_init(&nums);
+    printf("Heap test\n");
+    printf("press any key to add 1 number press 'q' to exit\n");
+    char c = 'd';
+    u64 i = 0;
+    while (c != 'q') {
+        render_list(&nums);
+        vector_append(&nums, i);
+        i++;
+        c = getchar();
+    }
+    vector_free(&nums);
+}