Wrappers and helper functions for physical and virtual memory addresses.
This lib is modified from Arceos
use memory_addr::{PhysAddr, VirtAddr};
let phys_addr = PhysAddr::from(0x12345678);
let virt_addr = VirtAddr::from(0x87654321);
assert_eq!(phys_addr.align_down(0x1000usize), PhysAddr::from(0x12345000));
assert_eq!(phys_addr.align_offset_4k(), 0x678);
assert_eq!(virt_addr.align_up_4k(), VirtAddr::from(0x87655000));
assert!(!virt_addr.is_aligned_4k());
assert!(VirtAddr::from(0xabcedf0).is_aligned(16usize));