Memory fixes userspace

src/kernel/userland/libc/libui.c

@@ -39,3 +39,8 @@ void ui_mark_dirty(ui_window_t win, int x, int y, int w, int h) {
     uint64_t params[4] = { (uint64_t)x, (uint64_t)y, (uint64_t)w, (uint64_t)h };
     syscall3(SYS_GUI, GUI_CMD_MARK_DIRTY, (uint64_t)win, (uint64_t)params);
 }
+
+void ui_draw_image(ui_window_t win, int x, int y, int w, int h, uint32_t *image_data) {
+    uint64_t params[4] = { (uint64_t)x, (uint64_t)y, (uint64_t)w, (uint64_t)h };
+    syscall4(SYS_GUI, GUI_CMD_DRAW_IMAGE, (uint64_t)win, (uint64_t)params, (uint64_t)image_data);
+}

src/kernel/userland/libc/libui.h

@@ -11,6 +11,7 @@
 #define GUI_CMD_MARK_DIRTY    4
 #define GUI_CMD_GET_EVENT     5
 #define GUI_CMD_DRAW_ROUNDED_RECT_FILLED 6
+#define GUI_CMD_DRAW_IMAGE    7
 
 // Event Types
 #define GUI_EVENT_NONE        0
@@ -42,5 +43,6 @@ void ui_draw_rect(ui_window_t win, int x, int y, int w, int h, uint32_t color);
 void ui_draw_rounded_rect_filled(ui_window_t win, int x, int y, int w, int h, int radius, uint32_t color);
 void ui_draw_string(ui_window_t win, int x, int y, const char *str, uint32_t color);
 void ui_mark_dirty(ui_window_t win, int x, int y, int w, int h);
+void ui_draw_image(ui_window_t win, int x, int y, int w, int h, uint32_t *image_data);
 
 #endif

src/kernel/userland/libc/stdlib.c

@@ -24,9 +24,6 @@ static BlockMeta *find_free_block(BlockMeta **last, size_t size) {
 static BlockMeta *request_space(BlockMeta* last, size_t size) {
     BlockMeta *block;
     block = (BlockMeta *)sys_sbrk(0);
-    // Ask for space, ensuring everything stays 8-byte aligned if sizes are odd.
-    // For simplicity, we just request exactly what is needed, 
-    // but typically `size` should be aligned.
     size_t align = 8;
     if (size % align != 0) {
         size += align - (size % align);
@@ -70,7 +67,6 @@ void *malloc(size_t size) {
             if (!block) return NULL;
         } else { // Found free block
             block->free = 0;
-            // We could split the block here if block->size is much larger than size...
         }
     }
 

src/kernel/userland/libc/syscall.c

@@ -59,11 +59,10 @@ uint64_t syscall5(uint64_t sys_num, uint64_t arg1, uint64_t arg2, uint64_t arg3,
     return ret;
 }
 
-// C-Friendly Wrappers
 
 void sys_exit(int status) {
     syscall1(SYS_EXIT, (uint64_t)status);
-    while (1); // Halt
+    while (1); 
 }
 
 int sys_write(int fd, const char *buf, int len) {