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e74abb32 XL |
1 | //! System bindings for HermitCore |
2 | //! | |
3 | //! This module contains the facade (aka platform-specific) implementations of | |
4 | //! OS level functionality for HermitCore. | |
5 | //! | |
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. | |
9 | //! | |
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! | |
15 | ||
29967ef6 XL |
16 | #![allow(unsafe_op_in_unsafe_fn)] |
17 | ||
e74abb32 | 18 | use crate::intrinsics; |
60c5eb7d | 19 | use crate::os::raw::c_char; |
e74abb32 XL |
20 | |
21 | pub mod alloc; | |
22 | pub mod args; | |
cdc7bbd5 | 23 | #[path = "../unix/cmath.rs"] |
e74abb32 | 24 | pub mod cmath; |
60c5eb7d | 25 | pub mod condvar; |
e74abb32 | 26 | pub mod env; |
e74abb32 | 27 | pub mod fd; |
60c5eb7d | 28 | pub mod fs; |
cdc7bbd5 | 29 | #[path = "../unsupported/io.rs"] |
60c5eb7d XL |
30 | pub mod io; |
31 | pub mod memchr; | |
32 | pub mod mutex; | |
e74abb32 | 33 | pub mod net; |
60c5eb7d | 34 | pub mod os; |
cdc7bbd5 | 35 | #[path = "../unix/path.rs"] |
e74abb32 | 36 | pub mod path; |
6a06907d | 37 | #[path = "../unsupported/pipe.rs"] |
e74abb32 | 38 | pub mod pipe; |
29967ef6 | 39 | #[path = "../unsupported/process.rs"] |
e74abb32 | 40 | pub mod process; |
60c5eb7d | 41 | pub mod rwlock; |
60c5eb7d XL |
42 | pub mod stdio; |
43 | pub mod thread; | |
3dfed10e | 44 | pub mod thread_local_dtor; |
cdc7bbd5 | 45 | #[path = "../unsupported/thread_local_key.rs"] |
3dfed10e | 46 | pub mod thread_local_key; |
60c5eb7d | 47 | pub mod time; |
e74abb32 | 48 | |
e74abb32 | 49 | use crate::io::ErrorKind; |
60c5eb7d | 50 | pub use crate::sys_common::os_str_bytes as os_str; |
e74abb32 XL |
51 | |
52 | #[allow(unused_extern_crates)] | |
53 | pub extern crate hermit_abi as abi; | |
54 | ||
55 | pub fn unsupported<T>() -> crate::io::Result<T> { | |
56 | Err(unsupported_err()) | |
57 | } | |
58 | ||
59 | pub fn unsupported_err() -> crate::io::Error { | |
cdc7bbd5 XL |
60 | crate::io::Error::new_const( |
61 | crate::io::ErrorKind::Unsupported, | |
62 | &"operation not supported on HermitCore yet", | |
63 | ) | |
e74abb32 XL |
64 | } |
65 | ||
e74abb32 XL |
66 | pub unsafe fn strlen(start: *const c_char) -> usize { |
67 | let mut str = start; | |
68 | ||
69 | while *str != 0 { | |
70 | str = str.offset(1); | |
71 | } | |
72 | ||
73 | (str as usize) - (start as usize) | |
74 | } | |
75 | ||
76 | #[no_mangle] | |
77 | pub extern "C" fn floor(x: f64) -> f64 { | |
60c5eb7d | 78 | unsafe { intrinsics::floorf64(x) } |
e74abb32 XL |
79 | } |
80 | ||
f9f354fc XL |
81 | pub fn abort_internal() -> ! { |
82 | unsafe { | |
83 | abi::abort(); | |
84 | } | |
e74abb32 XL |
85 | } |
86 | ||
87 | // FIXME: just a workaround to test the system | |
88 | pub fn hashmap_random_keys() -> (u64, u64) { | |
89 | (1, 2) | |
90 | } | |
91 | ||
92 | // This function is needed by the panic runtime. The symbol is named in | |
93 | // pre-link args for the target specification, so keep that in sync. | |
94 | #[cfg(not(test))] | |
95 | #[no_mangle] | |
96 | // NB. used by both libunwind and libpanic_abort | |
f9f354fc | 97 | pub extern "C" fn __rust_abort() { |
e74abb32 XL |
98 | abort_internal(); |
99 | } | |
100 | ||
cdc7bbd5 XL |
101 | // SAFETY: must be called only once during runtime initialization. |
102 | // NOTE: this is not guaranteed to run, for example when Rust code is called externally. | |
103 | pub unsafe fn init(argc: isize, argv: *const *const u8) { | |
ba9703b0 | 104 | let _ = net::init(); |
cdc7bbd5 XL |
105 | args::init(argc, argv); |
106 | } | |
107 | ||
108 | // SAFETY: must be called only once during runtime cleanup. | |
109 | // NOTE: this is not guaranteed to run, for example when the program aborts. | |
110 | pub unsafe fn cleanup() { | |
111 | args::cleanup(); | |
e74abb32 XL |
112 | } |
113 | ||
114 | #[cfg(not(test))] | |
115 | #[no_mangle] | |
60c5eb7d XL |
116 | pub unsafe extern "C" fn runtime_entry( |
117 | argc: i32, | |
118 | argv: *const *const c_char, | |
119 | env: *const *const c_char, | |
120 | ) -> ! { | |
3dfed10e | 121 | use crate::sys::hermit::thread_local_dtor::run_dtors; |
e74abb32 XL |
122 | extern "C" { |
123 | fn main(argc: isize, argv: *const *const c_char) -> i32; | |
124 | } | |
125 | ||
126 | // initialize environment | |
127 | os::init_environment(env as *const *const i8); | |
128 | ||
129 | let result = main(argc as isize, argv); | |
130 | ||
ba9703b0 | 131 | run_dtors(); |
e74abb32 XL |
132 | abi::exit(result); |
133 | } | |
134 | ||
135 | pub fn decode_error_kind(errno: i32) -> ErrorKind { | |
136 | match errno { | |
137 | x if x == 13 as i32 => ErrorKind::PermissionDenied, | |
138 | x if x == 98 as i32 => ErrorKind::AddrInUse, | |
139 | x if x == 99 as i32 => ErrorKind::AddrNotAvailable, | |
140 | x if x == 11 as i32 => ErrorKind::WouldBlock, | |
141 | x if x == 103 as i32 => ErrorKind::ConnectionAborted, | |
142 | x if x == 111 as i32 => ErrorKind::ConnectionRefused, | |
143 | x if x == 104 as i32 => ErrorKind::ConnectionReset, | |
144 | x if x == 17 as i32 => ErrorKind::AlreadyExists, | |
145 | x if x == 4 as i32 => ErrorKind::Interrupted, | |
146 | x if x == 22 as i32 => ErrorKind::InvalidInput, | |
147 | x if x == 2 as i32 => ErrorKind::NotFound, | |
148 | x if x == 107 as i32 => ErrorKind::NotConnected, | |
149 | x if x == 1 as i32 => ErrorKind::PermissionDenied, | |
150 | x if x == 32 as i32 => ErrorKind::BrokenPipe, | |
151 | x if x == 110 as i32 => ErrorKind::TimedOut, | |
152 | _ => ErrorKind::Other, | |
153 | } | |
154 | } | |
155 | ||
156 | pub fn cvt(result: i32) -> crate::io::Result<usize> { | |
60c5eb7d | 157 | if result < 0 { Err(crate::io::Error::from_raw_os_error(-result)) } else { Ok(result as usize) } |
e74abb32 | 158 | } |