linux_syscalls/env/vdso/
riscv.rs

1use core::cell::UnsafeCell;
2
3use crate::env::aux::SysInfoHeader;
4
5pub use linux_raw_vdso::Vdso as RawVdso;
6
7#[non_exhaustive]
8#[repr(transparent)]
9pub struct Vdso(pub(crate) RawVdso);
10
11unsafe impl Send for Vdso {}
12unsafe impl Sync for Vdso {}
13
14impl Vdso {
15    #[inline]
16    pub fn rt_sigreturn(&self) -> *const core::ffi::c_void {
17        self.0.rt_sigreturn
18    }
19
20    #[inline]
21    pub fn gettimeofday(&self) -> *const core::ffi::c_void {
22        self.0.gettimeofday
23    }
24
25    #[inline]
26    pub fn clock_gettime(&self) -> *const core::ffi::c_void {
27        self.0.clock_gettime
28    }
29
30    #[inline]
31    pub fn clock_getres(&self) -> *const core::ffi::c_void {
32        self.0.clock_getres
33    }
34
35    #[inline]
36    pub fn getcpu(&self) -> *const core::ffi::c_void {
37        self.0.getcpu
38    }
39
40    #[inline]
41    pub fn flush_icache(&self) -> *const core::ffi::c_void {
42        self.0.flush_icache
43    }
44}
45
46pub(crate) static mut VDSO: UnsafeCell<Vdso> = UnsafeCell::new(Vdso(RawVdso {
47    rt_sigreturn: core::ptr::null(),
48    gettimeofday: core::ptr::null(),
49    clock_gettime: core::ptr::null(),
50    clock_getres: core::ptr::null(),
51    getcpu: core::ptr::null(),
52    flush_icache: core::ptr::null(),
53}));
54
55pub(crate) unsafe fn init() {
56    if let Some(vdso) =
57        crate::env::aux::get::<SysInfoHeader>().and_then(|info| unsafe { RawVdso::from_ptr(info) })
58    {
59        (*VDSO.get()).0 = vdso;
60    }
61}
linux_syscalls/env/vdso/riscv.rs

linux_syscalls/env/vdso/
riscv.rs
