miri/shims/unix/android/
foreign_items.rs1use 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_create1" => {
29 let [flag] = this.check_shim(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] = this.check_shim(abi, CanonAbi::C, link_name, args)?;
35 let result = this.epoll_ctl(epfd, op, fd, event)?;
36 this.write_scalar(result, dest)?;
37 }
38 "epoll_wait" => {
39 let [epfd, events, maxevents, timeout] =
40 this.check_shim(abi, CanonAbi::C, link_name, args)?;
41 this.epoll_wait(epfd, events, maxevents, timeout, dest)?;
42 }
43 "eventfd" => {
44 let [val, flag] = this.check_shim(abi, CanonAbi::C, link_name, args)?;
45 let result = this.eventfd(val, flag)?;
46 this.write_scalar(result, dest)?;
47 }
48
49 "__errno" => {
51 let [] = this.check_shim(abi, CanonAbi::C, link_name, args)?;
52 let errno_place = this.last_error_place()?;
53 this.write_scalar(errno_place.to_ref(this).to_scalar(), dest)?;
54 }
55
56 "syscall" => syscall(this, link_name, abi, args, dest)?,
58
59 "prctl" => prctl(this, link_name, abi, args, dest)?,
61
62 _ => return interp_ok(EmulateItemResult::NotSupported),
63 }
64 interp_ok(EmulateItemResult::NeedsReturn)
65 }
66}