user program (still many #PF)

2026-04-02 17:05:51 +02:00
parent 11a9dd4adb
commit aa30d9c6b5
11 changed files with 107 additions and 16 deletions
@@ -250,6 +250,17 @@ uintptr_t vmm_alloc_user_stack(uint64_t* pml4)
    return stack_top;
 }

+uintptr_t vmm_alloc_user_code(uint64_t* pml4, void* code_addr, uint64_t code_size)
+{
+    uintptr_t code_start = USER_CODE_START;
+
+    for (size_t i=code_start; i<code_start+code_size; i+=PAGE_SIZE) {
+        vmm_map(pml4, i, PTE_PRESENT | PTE_WRITABLE | PTE_USER);
+    }
+    
+    return code_start;
+}
+
 void vmm_init()
 {
    // NO U