1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98

pub trait Address: core::fmt::Debug + Copy + Clone + PartialEq + Eq + PartialOrd + Ord {
    fn new(addr: usize) -> Self;
    fn page_number(&self) -> usize;
    fn page_offset(&self) -> usize;
    fn to_4k_aligned(&self) -> Self;
    fn as_usize(&self) -> usize;
}

pub trait VirtualAddress: Address {
    unsafe fn as_mut<'a, 'b, T>(&'a self) -> &'b mut T;
}

pub trait AddressX32: Address {
    fn new_u32(addr: u32) -> Self;
    fn as_u32(&self) -> u32;
}
pub trait AddressX64: Address {
    fn new_u64(addr: u64) -> Self;
    fn as_u64(&self) -> u64;
}

pub trait PhysicalAddress: AddressX64 {}

pub trait AddressL3: Address {
    fn p3_index(&self) -> usize;
    fn p2_index(&self) -> usize;
    fn p1_index(&self) -> usize;
    fn from_page_table_indices(
        p3_index: usize,
        p2_index: usize,
        p1_index: usize,
        offset: usize,
    ) -> Self;
}

pub trait AddressL4: Address {
    fn p4_index(&self) -> usize;
    fn p3_index(&self) -> usize;
    fn p2_index(&self) -> usize;
    fn p1_index(&self) -> usize;
    fn from_page_table_indices(
        p4_index: usize,
        p3_index: usize,
        p2_index: usize,
        p1_index: usize,
        offset: usize,
    ) -> Self;
}

pub trait AddressL2: Address {
    fn p2_index(&self) -> usize;
    fn p1_index(&self) -> usize;
    fn from_page_table_indices(p2_index: usize, p1_index: usize, offset: usize) -> Self;
}
pub mod gpax4;
pub mod page;
pub mod sv32;
pub mod sv39;
pub mod sv48;

pub use self::gpax4::*;
pub use self::page::*;
pub use self::sv32::*;
pub use self::sv39::*;
pub use self::sv48::*;

#[macro_export]
macro_rules! use_sv32 {
    () => {
        pub type VirtAddr = VirtAddrSv32;
        pub type PhysAddr = PhysAddrSv32;
        pub type Page = PageWith<VirtAddr>;
        pub type Frame = FrameWith<PhysAddr>;
    };
}
#[macro_export]
macro_rules! use_sv39 {
    () => {
        pub type VirtAddr = VirtAddrSv39;
        pub type PhysAddr = PhysAddrSv39;
        pub type Page = PageWith<VirtAddr>;
        pub type Frame = FrameWith<PhysAddr>;
    };
}
#[macro_export]
macro_rules! use_sv48 {
    () => {
        pub type VirtAddr = VirtAddrSv48;
        pub type PhysAddr = PhysAddrSv48;
        pub type Page = PageWith<VirtAddr>;
        pub type Frame = FrameWith<PhysAddr>;
    };
}
#[cfg(target_arch = "riscv64")]
use_sv48!();

#[cfg(target_arch = "riscv32")]
use_sv32!();