PAGE_U_X_R
[VM_EXEC] = PAGE_U_X_R,
[VM_EXEC | VM_READ] = PAGE_U_X_R,
[VM_EXEC | VM_WRITE] = PAGE_U_X_R,
[VM_EXEC | VM_WRITE | VM_READ] = PAGE_U_X_R,
[VM_SHARED | VM_EXEC] = PAGE_U_X_R,
[VM_SHARED | VM_EXEC | VM_READ] = PAGE_U_X_R,