36 lines
875 B
Rust
36 lines
875 B
Rust
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#![feature(drop_types_in_const)]
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extern crate libloading;
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use std::sync::{Once, ONCE_INIT};
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use std::env;
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use libloading::Library;
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fn compiler_rt() -> &'static Library {
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let dir = env::current_exe().unwrap();
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let cdylib = dir.parent().unwrap().read_dir().unwrap().map(|c| {
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c.unwrap().path()
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}).find(|path| {
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path.file_name().unwrap().to_str().unwrap().contains("compiler_rt_cdylib")
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}).unwrap();
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unsafe {
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static mut COMPILER_RT: Option<Library> = None;
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static INIT: Once = ONCE_INIT;
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INIT.call_once(|| {
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COMPILER_RT = Some(Library::new(&cdylib).unwrap());
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});
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COMPILER_RT.as_ref().unwrap()
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}
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}
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pub fn get(sym: &str) -> usize {
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unsafe {
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let sym = format!("_{}", sym);
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let f: fn() -> usize = *compiler_rt().get(sym.as_bytes()).unwrap();
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f()
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}
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}
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