added origin program

kernel/multiboot.h

@@ -3,7 +3,7 @@
 
 #include <stdint.h>
 
-typedef struct  {
+typedef struct {
     uint32_t flags;
     uint32_t mem_lower;
     uint32_t mem_upper;
@@ -17,13 +17,20 @@ typedef struct  {
     uint32_t shndx;
     uint32_t mmap_length;
     uint32_t mmap_addr; 
-} multiboot_info;
+} __attribute__((packed)) multiboot_info;
 
-typedef struct __attribute__((packed)) {
+typedef struct {
     uint32_t size;
     uint64_t addr;  
     uint64_t len;    
     uint32_t type;
-} multiboot_mmap_entry;
+} __attribute__((packed)) multiboot_mmap_entry;
+
+typedef struct {
+    uint32_t mod_start; // Physical start address of user.elf in memory
+    uint32_t mod_end;   // Physical end address of user.elf
+    uint32_t cmdline;   // Pointer to a string (e.g., "/boot/user.elf")
+    uint32_t pad;
+} __attribute__((packed)) multiboot_module_entry;
 
 #endif