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 #![allow(unsafe_op_in_unsafe_fn)]
18 use crate::intrinsics;
19 use crate::os::raw::c_char;
23 #[path = "../unix/cmath.rs"]
29 #[path = "../unsupported/io.rs"]
34 #[path = "../unix/os_str.rs"]
36 #[path = "../unix/path.rs"]
38 #[path = "../unsupported/pipe.rs"]
40 #[path = "../unsupported/process.rs"]
44 pub mod thread_local_dtor;
45 #[path = "../unsupported/thread_local_key.rs"]
46 pub mod thread_local_key;
49 #[path = "../unix/locks"]
54 pub(crate) use futex_condvar::MovableCondvar;
55 pub(crate) use futex_mutex::{MovableMutex, Mutex};
56 pub(crate) use futex_rwlock::{MovableRwLock, RwLock};
59 use crate::io::ErrorKind;
61 #[allow(unused_extern_crates)]
62 pub extern crate hermit_abi as abi;
64 pub fn unsupported<T>() -> crate::io::Result<T> {
65 Err(unsupported_err())
68 pub fn unsupported_err() -> crate::io::Error {
69 crate::io::const_io_error!(
70 crate::io::ErrorKind::Unsupported,
71 "operation not supported on HermitCore yet",
76 pub extern "C" fn floor(x: f64) -> f64 {
77 unsafe { intrinsics::floorf64(x) }
80 pub fn abort_internal() -> ! {
86 // FIXME: just a workaround to test the system
87 pub fn hashmap_random_keys() -> (u64, u64) {
91 // This function is needed by the panic runtime. The symbol is named in
92 // pre-link args for the target specification, so keep that in sync.
95 // NB. used by both libunwind and libpanic_abort
96 pub extern "C" fn __rust_abort() {
100 // SAFETY: must be called only once during runtime initialization.
101 // NOTE: this is not guaranteed to run, for example when Rust code is called externally.
102 pub unsafe fn init(argc: isize, argv: *const *const u8, _sigpipe: u8) {
104 args::init(argc, argv);
107 // SAFETY: must be called only once during runtime cleanup.
108 // NOTE: this is not guaranteed to run, for example when the program aborts.
109 pub unsafe fn cleanup() {
115 pub unsafe extern "C" fn runtime_entry(
117 argv: *const *const c_char,
118 env: *const *const c_char,
120 use crate::sys::hermit::thread_local_dtor::run_dtors;
122 fn main(argc: isize, argv: *const *const c_char) -> i32;
125 // initialize environment
126 os::init_environment(env as *const *const i8);
128 let result = main(argc as isize, argv);
134 pub fn decode_error_kind(errno: i32) -> ErrorKind {
136 x if x == 13 as i32 => ErrorKind::PermissionDenied,
137 x if x == 98 as i32 => ErrorKind::AddrInUse,
138 x if x == 99 as i32 => ErrorKind::AddrNotAvailable,
139 x if x == 11 as i32 => ErrorKind::WouldBlock,
140 x if x == 103 as i32 => ErrorKind::ConnectionAborted,
141 x if x == 111 as i32 => ErrorKind::ConnectionRefused,
142 x if x == 104 as i32 => ErrorKind::ConnectionReset,
143 x if x == 17 as i32 => ErrorKind::AlreadyExists,
144 x if x == 4 as i32 => ErrorKind::Interrupted,
145 x if x == 22 as i32 => ErrorKind::InvalidInput,
146 x if x == 2 as i32 => ErrorKind::NotFound,
147 x if x == 107 as i32 => ErrorKind::NotConnected,
148 x if x == 1 as i32 => ErrorKind::PermissionDenied,
149 x if x == 32 as i32 => ErrorKind::BrokenPipe,
150 x if x == 110 as i32 => ErrorKind::TimedOut,
151 _ => ErrorKind::Uncategorized,
155 pub fn cvt(result: i32) -> crate::io::Result<usize> {
156 if result < 0 { Err(crate::io::Error::from_raw_os_error(-result)) } else { Ok(result as usize) }