miri/shims/wasi/
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::alloc::EvalContextExt as _;
7use crate::*;
8
9pub fn is_dyn_sym(_name: &str) -> bool {
10    false
11}
12
13impl<'tcx> EvalContextExt<'tcx> for crate::MiriInterpCx<'tcx> {}
14pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
15    fn emulate_foreign_item_inner(
16        &mut self,
17        link_name: Symbol,
18        abi: &FnAbi<'tcx, Ty<'tcx>>,
19        args: &[OpTy<'tcx>],
20        dest: &MPlaceTy<'tcx>,
21    ) -> InterpResult<'tcx, EmulateItemResult> {
22        let this = self.eval_context_mut();
23        match link_name.as_str() {
24            // Allocation
25            "posix_memalign" => {
26                let [memptr, align, size] =
27                    this.check_shim_sig_lenient(abi, CanonAbi::C, link_name, args)?;
28                let result = this.posix_memalign(memptr, align, size)?;
29                this.write_scalar(result, dest)?;
30            }
31            "aligned_alloc" => {
32                let [align, size] =
33                    this.check_shim_sig_lenient(abi, CanonAbi::C, link_name, args)?;
34                let res = this.aligned_alloc(align, size)?;
35                this.write_pointer(res, dest)?;
36            }
37
38            _ => return interp_ok(EmulateItemResult::NotSupported),
39        }
40        interp_ok(EmulateItemResult::NeedsReturn)
41    }
42}
miri/shims/wasi/foreign_items.rs

miri/shims/wasi/
foreign_items.rs
