miri/shims/unix/android/
foreign_items.rs

1use rustc_abi::CanonAbi;
2use rustc_middle::ty::Ty;
3use rustc_span::Symbol;
4use rustc_target::callconv::FnAbi;
5
6use crate::shims::unix::android::thread::prctl;
7use crate::shims::unix::linux_like::epoll::EvalContextExt as _;
8use crate::shims::unix::linux_like::eventfd::EvalContextExt as _;
9use crate::shims::unix::linux_like::syscall::syscall;
10use crate::*;
11
12pub fn is_dyn_sym(_name: &str) -> bool {
13    false
14}
15
16impl<'tcx> EvalContextExt<'tcx> for crate::MiriInterpCx<'tcx> {}
17pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
18    fn emulate_foreign_item_inner(
19        &mut self,
20        link_name: Symbol,
21        abi: &FnAbi<'tcx, Ty<'tcx>>,
22        args: &[OpTy<'tcx>],
23        dest: &MPlaceTy<'tcx>,
24    ) -> InterpResult<'tcx, EmulateItemResult> {
25        let this = self.eval_context_mut();
26        match link_name.as_str() {
27            // epoll, eventfd
28            "epoll_create1" => {
29                let [flag] = this.check_shim_sig_lenient(abi, CanonAbi::C, link_name, args)?;
30                let result = this.epoll_create1(flag)?;
31                this.write_scalar(result, dest)?;
32            }
33            "epoll_ctl" => {
34                let [epfd, op, fd, event] =
35                    this.check_shim_sig_lenient(abi, CanonAbi::C, link_name, args)?;
36                let result = this.epoll_ctl(epfd, op, fd, event)?;
37                this.write_scalar(result, dest)?;
38            }
39            "epoll_wait" => {
40                let [epfd, events, maxevents, timeout] =
41                    this.check_shim_sig_lenient(abi, CanonAbi::C, link_name, args)?;
42                this.epoll_wait(epfd, events, maxevents, timeout, dest)?;
43            }
44            "eventfd" => {
45                let [val, flag] = this.check_shim_sig_lenient(abi, CanonAbi::C, link_name, args)?;
46                let result = this.eventfd(val, flag)?;
47                this.write_scalar(result, dest)?;
48            }
49
50            // Miscellaneous
51            "__errno" => {
52                let [] = this.check_shim_sig_lenient(abi, CanonAbi::C, link_name, args)?;
53                let errno_place = this.last_error_place()?;
54                this.write_scalar(errno_place.to_ref(this).to_scalar(), dest)?;
55            }
56
57            // Dynamically invoked syscalls
58            "syscall" => syscall(this, link_name, abi, args, dest)?,
59
60            // Threading
61            "prctl" => prctl(this, link_name, abi, args, dest)?,
62
63            _ => return interp_ok(EmulateItemResult::NotSupported),
64        }
65        interp_ok(EmulateItemResult::NeedsReturn)
66    }
67}
miri/shims/unix/android/foreign_items.rs

miri/shims/unix/android/
foreign_items.rs
