move OS constants to platform crate

Cargo.lock

@@ -1377,9 +1377,9 @@ dependencies = [
 
 [[package]]
 name = "hermit-abi"
-version = "0.1.8"
+version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1010591b26bbfe835e9faeabeb11866061cc7dcebffd56ad7d0942d0e61aefd8"
+checksum = "725cf19794cf90aa94e65050cb4191ff5d8fa87a498383774c47b332e3af952e"
 dependencies = [
  "compiler_builtins",
  "libc",

src/libstd/Cargo.toml

@@ -41,7 +41,7 @@ dlmalloc = { version = "0.1", features = ['rustc-dep-of-std'] }
 fortanix-sgx-abi = { version = "0.3.2", features = ['rustc-dep-of-std'] }
 
 [target.'cfg(all(any(target_arch = "x86_64", target_arch = "aarch64"), target_os = "hermit"))'.dependencies]
-hermit-abi = { version = "0.1", features = ['rustc-dep-of-std'] }
+hermit-abi = { version = "0.1.10", features = ['rustc-dep-of-std'] }
 
 [target.wasm32-wasi.dependencies]
 wasi = { version = "0.9.0", features = ['rustc-dep-of-std'], default-features = false }

src/libstd/sys/hermit/fs.rs

@@ -6,6 +6,7 @@ use crate::io::{IoSlice, IoSliceMut, SeekFrom};
 use crate::path::{Path, PathBuf};
 use crate::sys::cvt;
 use crate::sys::hermit::abi;
+use crate::sys::hermit::abi::{O_APPEND, O_CREAT, O_EXCL, O_RDONLY, O_RDWR, O_TRUNC, O_WRONLY};
 use crate::sys::hermit::fd::FileDesc;
 use crate::sys::time::SystemTime;
 use crate::sys::{unsupported, Void};
@@ -17,14 +18,6 @@ pub use crate::sys_common::fs::copy;
 fn cstr(path: &Path) -> io::Result<CString> {
     Ok(CString::new(path.as_os_str().as_bytes())?)
 }
-//const O_ACCMODE: i32 = 00000003;
-const O_RDONLY: i32 = 00000000;
-const O_WRONLY: i32 = 00000001;
-const O_RDWR: i32 = 00000002;
-const O_CREAT: i32 = 00000100;
-const O_EXCL: i32 = 00000200;
-const O_TRUNC: i32 = 00001000;
-const O_APPEND: i32 = 00002000;
 
 #[derive(Debug)]
 pub struct File(FileDesc);

src/libstd/sys/hermit/thread.rs

@@ -1,7 +1,6 @@
 #![allow(dead_code)]
 
 use crate::ffi::CStr;
-use crate::fmt;
 use crate::io;
 use crate::mem;
 use crate::sys::hermit::abi;
@@ -10,28 +9,6 @@ use core::u32;
 
 pub type Tid = abi::Tid;
 
-/// Priority of a task
-#[derive(PartialEq, Eq, PartialOrd, Ord, Debug, Clone, Copy)]
-pub struct Priority(u8);
-
-impl Priority {
-    pub const fn into(self) -> u8 {
-        self.0
-    }
-
-    pub const fn from(x: u8) -> Self {
-        Priority(x)
-    }
-}
-
-impl fmt::Display for Priority {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "{}", self.0)
-    }
-}
-
-pub const NORMAL_PRIO: Priority = Priority::from(2);
-
 pub struct Thread {
     tid: Tid,
 }
@@ -52,8 +29,8 @@ impl Thread {
         let ret = abi::spawn(
             &mut tid as *mut Tid,
             thread_start,
-            p as usize,
-            Priority::into(NORMAL_PRIO),
+            &*p as *const _ as *const u8 as usize,
+            abi::Priority::into(abi::NORMAL_PRIO),
             core_id,
         );