pudding_kernel/context/
x86_64.rs

1extern "C" {
2    // コンテキスト生成
3    fn _kernel_context_create(
4        ctxcb: *mut Context,
5        isp: usize,
6        entry: extern "C" fn(isize),
7        exinf: isize,
8    );
9
10    // コンテキスト開始
11    fn _kernel_context_start(ctxcb_new: *mut Context);
12
13    // コンテキストスイッチ
14    fn _kernel_context_switch(ctxcb_next: *mut Context, ctxcb_current: *mut Context);
15}
16
17#[repr(C)]
18pub struct Context {
19    pub sp: usize,
20}
21
22impl Context {
23    pub const fn new() -> Self {
24        Context { sp: 0 }
25    }
26
27    pub(crate) unsafe fn _create(
28        &mut self,
29        stack: &mut [u8],
30        entry: extern "C" fn(isize),
31        exinf: isize,
32    ) {
33        let isp = (&mut stack[0] as *mut u8 as usize) + stack.len();
34        _kernel_context_create(self as *mut Context, isp as usize, entry, exinf);
35    }
36
37    pub(crate) unsafe fn _start(&mut self) {
38        _kernel_context_start(self as *mut Context);
39    }
40
41    pub(crate) unsafe fn _switch(&mut self, current: &mut Context) {
42        _kernel_context_switch(self as *mut Context, current as *mut Context);
43    }
44}
pudding_kernel/context/x86_64.rs

pudding_kernel/context/
x86_64.rs
