Rollup merge of #108507 - hermitcore:new, r=m-ou-se

use `as_ptr` to determine the address of atomics

The PR #107736 renamed  atomic `as_mut_ptr` to `as_ptr`. Consequently, the futex implementation of the tier-3 platform `RutyHermit` has to use this new interface. In addition, this PR removes also an unused import.

library/std/src/sys/hermit/futex.rs

@@ -16,7 +16,7 @@ pub fn futex_wait(futex: &AtomicU32, expected: u32, timeout: Option<Duration>) -
 
     let r = unsafe {
         abi::futex_wait(
-            futex.as_mut_ptr(),
+            futex.as_ptr(),
             expected,
             timespec.as_ref().map_or(null(), |t| t as *const abi::timespec),
             abi::FUTEX_RELATIVE_TIMEOUT,
@@ -28,12 +28,12 @@ pub fn futex_wait(futex: &AtomicU32, expected: u32, timeout: Option<Duration>) -
 
 #[inline]
 pub fn futex_wake(futex: &AtomicU32) -> bool {
-    unsafe { abi::futex_wake(futex.as_mut_ptr(), 1) > 0 }
+    unsafe { abi::futex_wake(futex.as_ptr(), 1) > 0 }
 }
 
 #[inline]
 pub fn futex_wake_all(futex: &AtomicU32) {
     unsafe {
-        abi::futex_wake(futex.as_mut_ptr(), i32::MAX);
+        abi::futex_wake(futex.as_ptr(), i32::MAX);
     }
 }

library/std/src/sys/hermit/mod.rs

@@ -15,7 +15,6 @@
 
 #![allow(missing_docs, nonstandard_style, unsafe_op_in_unsafe_fn)]
 
-use crate::intrinsics;
 use crate::os::raw::c_char;
 
 pub mod alloc;