add basic IP support in HermitCore

Cargo.lock

@@ -1350,9 +1350,9 @@ dependencies = [
 
 [[package]]
 name = "hermit-abi"
-version = "0.1.1"
+version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f22b8f315b98f415780ddbe9163c7dbbc5a07225b6d102ace1d8aeef85775140"
+checksum = "1010591b26bbfe835e9faeabeb11866061cc7dcebffd56ad7d0942d0e61aefd8"
 dependencies = [
  "compiler_builtins",
  "libc",

src/libpanic_unwind/hermit.rs

@@ -4,7 +4,6 @@
 
 use alloc::boxed::Box;
 use core::any::Any;
-use core::ptr;
 
 pub unsafe fn cleanup(_ptr: *mut u8) -> Box<dyn Any + Send> {
     extern "C" {

src/libstd/os/mod.rs

@@ -24,7 +24,7 @@ cfg_if::cfg_if! {
         // If we're not documenting libstd then we just expose the main modules
         // as we otherwise would.
 
-        #[cfg(any(target_os = "redox", unix, target_os = "vxworks"))]
+        #[cfg(any(target_os = "redox", unix, target_os = "vxworks", target_os = "hermit"))]
         #[stable(feature = "rust1", since = "1.0.0")]
         pub use crate::sys::ext as unix;
 

src/libstd/sys/hermit/ext/ffi.rs

@@ -0,0 +1,38 @@
+//! HermitCore-specific extension to the primitives in the `std::ffi` module
+//!
+//! # Examples
+//!
+//! ```
+//! use std::ffi::OsString;
+//! use std::os::hermit::ffi::OsStringExt;
+//!
+//! let bytes = b"foo".to_vec();
+//!
+//! // OsStringExt::from_vec
+//! let os_string = OsString::from_vec(bytes);
+//! assert_eq!(os_string.to_str(), Some("foo"));
+//!
+//! // OsStringExt::into_vec
+//! let bytes = os_string.into_vec();
+//! assert_eq!(bytes, b"foo");
+//! ```
+//!
+//! ```
+//! use std::ffi::OsStr;
+//! use std::os::hermit::ffi::OsStrExt;
+//!
+//! let bytes = b"foo";
+//!
+//! // OsStrExt::from_bytes
+//! let os_str = OsStr::from_bytes(bytes);
+//! assert_eq!(os_str.to_str(), Some("foo"));
+//!
+//! // OsStrExt::as_bytes
+//! let bytes = os_str.as_bytes();
+//! assert_eq!(bytes, b"foo");
+//! ```
+
+#![stable(feature = "rust1", since = "1.0.0")]
+
+#[stable(feature = "rust1", since = "1.0.0")]
+pub use crate::sys_common::os_str_bytes::*;

src/libstd/sys/hermit/ext/mod.rs

@@ -0,0 +1,14 @@
+#![stable(feature = "rust1", since = "1.0.0")]
+#![allow(missing_docs)]
+
+pub mod ffi;
+
+/// A prelude for conveniently writing platform-specific code.
+///
+/// Includes all extension traits, and some important type definitions.
+#[stable(feature = "rust1", since = "1.0.0")]
+pub mod prelude {
+    #[doc(no_inline)]
+    #[stable(feature = "rust1", since = "1.0.0")]
+    pub use super::ffi::{OsStrExt, OsStringExt};
+}

src/libstd/sys/hermit/mod.rs

@@ -21,6 +21,7 @@ pub mod args;
 pub mod cmath;
 pub mod condvar;
 pub mod env;
+pub mod ext;
 pub mod fast_thread_local;
 pub mod fd;
 pub mod fs;
@@ -93,9 +94,7 @@ pub unsafe extern "C" fn __rust_abort() {
 
 #[cfg(not(test))]
 pub fn init() {
-    unsafe {
-        let _ = net::init();
-    }
+    let _ = net::init();
 }
 
 #[cfg(not(test))]