1 //! System bindings for HermitCore
3 //! This module contains the facade (aka platform-specific) implementations of
4 //! OS level functionality for HermitCore.
6 //! This is all super highly experimental and not actually intended for
7 //! wide/production use yet, it's still all in the experimental category. This
8 //! will likely change over time.
10 //! Currently all functions here are basically stubs that immediately return
11 //! errors. The hope is that with a portability lint we can turn actually just
12 //! remove all this and just omit parts of the standard library if we're
13 //! compiling for wasm. That way it's a compile time error for something that's
14 //! guaranteed to be a runtime error!
16 use crate::intrinsics;
17 use crate::os::raw::c_char;
36 pub mod stack_overflow;
39 pub mod thread_local_dtor;
40 pub mod thread_local_key;
43 use crate::io::ErrorKind;
44 pub use crate::sys_common::os_str_bytes as os_str;
46 #[allow(unused_extern_crates)]
47 pub extern crate hermit_abi as abi;
49 pub fn unsupported<T>() -> crate::io::Result<T> {
50 Err(unsupported_err())
53 pub fn unsupported_err() -> crate::io::Error {
54 crate::io::Error::new(crate::io::ErrorKind::Other, "operation not supported on HermitCore yet")
57 // This enum is used as the storage for a bunch of types which can't actually
59 #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug, Hash)]
62 pub unsafe fn strlen(start: *const c_char) -> usize {
69 (str as usize) - (start as usize)
73 pub extern "C" fn floor(x: f64) -> f64 {
74 unsafe { intrinsics::floorf64(x) }
77 pub fn abort_internal() -> ! {
83 // FIXME: just a workaround to test the system
84 pub fn hashmap_random_keys() -> (u64, u64) {
88 // This function is needed by the panic runtime. The symbol is named in
89 // pre-link args for the target specification, so keep that in sync.
92 // NB. used by both libunwind and libpanic_abort
93 pub extern "C" fn __rust_abort() {
104 pub unsafe extern "C" fn runtime_entry(
106 argv: *const *const c_char,
107 env: *const *const c_char,
109 use crate::sys::hermit::fast_thread_local::run_dtors;
111 fn main(argc: isize, argv: *const *const c_char) -> i32;
114 // initialize environment
115 os::init_environment(env as *const *const i8);
117 let result = main(argc as isize, argv);
123 pub fn decode_error_kind(errno: i32) -> ErrorKind {
125 x if x == 13 as i32 => ErrorKind::PermissionDenied,
126 x if x == 98 as i32 => ErrorKind::AddrInUse,
127 x if x == 99 as i32 => ErrorKind::AddrNotAvailable,
128 x if x == 11 as i32 => ErrorKind::WouldBlock,
129 x if x == 103 as i32 => ErrorKind::ConnectionAborted,
130 x if x == 111 as i32 => ErrorKind::ConnectionRefused,
131 x if x == 104 as i32 => ErrorKind::ConnectionReset,
132 x if x == 17 as i32 => ErrorKind::AlreadyExists,
133 x if x == 4 as i32 => ErrorKind::Interrupted,
134 x if x == 22 as i32 => ErrorKind::InvalidInput,
135 x if x == 2 as i32 => ErrorKind::NotFound,
136 x if x == 107 as i32 => ErrorKind::NotConnected,
137 x if x == 1 as i32 => ErrorKind::PermissionDenied,
138 x if x == 32 as i32 => ErrorKind::BrokenPipe,
139 x if x == 110 as i32 => ErrorKind::TimedOut,
140 _ => ErrorKind::Other,
144 pub fn cvt(result: i32) -> crate::io::Result<usize> {
145 if result < 0 { Err(crate::io::Error::from_raw_os_error(-result)) } else { Ok(result as usize) }