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Few lints

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This commit is contained in:
Justin Moore 2021-05-30 14:07:28 -05:00
parent 60b14cbf04
commit 8b2af7bdec
2 changed files with 23 additions and 7 deletions
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29
shared/core_reqs/src/lib.rs
View File

@ -17,6 +17,9 @@
/// * `src` - Pointer to memory to copy from
/// * `n` - Number of bytes to copy
///
/// # Safety
/// This function copies raw memory! You must make sure the two areas point to valid memory.
/// In addition, you MUST make sure `src` and `dst` do not overlap!
#[no_mangle]
pub unsafe extern "C" fn memcpy(dest: *mut u8, src: *const u8, n: usize) -> *mut u8 {
memmove(dest, src, n)
@ -30,6 +33,8 @@ pub unsafe extern "C" fn memcpy(dest: *mut u8, src: *const u8, n: usize) -> *mut
/// * `src` - Pointer to memory to copy from
/// * `n` - Number of bytes to copy
///
/// # Safety
/// This function copies raw memory! You must make sure the two areas point to valid memory.
#[no_mangle]
pub unsafe extern "C" fn memmove(dest: *mut u8, src: *const u8, n: usize) -> *mut u8 {
if src < dest as *const u8 {
@ -37,13 +42,13 @@ pub unsafe extern "C" fn memmove(dest: *mut u8, src: *const u8, n: usize) -> *mu
let mut ii = n;
while ii != 0 {
ii -= 1;
*dest.offset(ii as isize) = *src.offset(ii as isize);
*dest.add(ii) = *src.add(ii);
}
} else {
// copy forwards
let mut ii = 0;
while ii < n {
*dest.offset(ii as isize) = *src.offset(ii as isize);
*dest.add(ii) = *src.add(ii);
ii += 1;
}
}
@ -59,6 +64,8 @@ pub unsafe extern "C" fn memmove(dest: *mut u8, src: *const u8, n: usize) -> *mu
/// * `c` - Character to set `n` bytes in `s` to
/// * `n` - Number of bytes to set
///
/// # Safety
/// This function modifies raw memory! You must make sure the `s` points to valid memory.
#[no_mangle]
#[cfg(target_arch = "powerpc64")]
pub unsafe extern "C" fn memset(s: *mut u8, c: i32, n: usize) -> *mut u8 {
@ -69,7 +76,7 @@ pub unsafe extern "C" fn memset(s: *mut u8, c: i32, n: usize) -> *mut u8 {
let mut ii = n;
while ii != 0 {
ii -= 1;
*s.offset(ii as isize) = c as u8;
*s.add(ii) = c as u8;
}
s
@ -128,12 +135,16 @@ pub unsafe extern "C" fn memset(s: *mut u8, c: i32, n: usize) -> *mut u8 {
/// * `s1` - Pointer to memory to compare with s2
/// * `s2` - Pointer to memory to compare with s1
/// * `n` - Number of bytes to set
///
/// # Safety
/// This function is generally safe to use as long as the raw memory
/// is accessible.
#[no_mangle]
pub unsafe extern "C" fn memcmp(s1: *const u8, s2: *const u8, n: usize) -> i32 {
let mut ii = 0;
while ii < n {
let a = *s1.offset(ii as isize);
let b = *s2.offset(ii as isize);
let a = *s1.add(ii);
let b = *s2.add(ii);
if a != b {
return a as i32 - b as i32;
}
@ -150,12 +161,16 @@ pub unsafe extern "C" fn memcmp(s1: *const u8, s2: *const u8, n: usize) -> i32 {
/// * `s1` - Pointer to memory to compare with s2
/// * `s2` - Pointer to memory to compare with s1
/// * `n` - Number of bytes to compare
///
/// # Safety
/// This function is generally safe to use as long as the raw memory
/// is accessible.
#[no_mangle]
pub unsafe extern "C" fn bcmp(s1: *const u8, s2: *const u8, n: usize) -> i32 {
let mut ii = 0;
while ii < n {
let a = *s1.offset(ii as isize);
let b = *s2.offset(ii as isize);
let a = *s1.add(ii);
let b = *s2.add(ii);
if a != b {
return 1;
}

1
shared/sync/src/mutex.rs
View File

@ -25,6 +25,7 @@ impl<T> SpinMutex<T> {
/// Retrieves the inner value without attempting to lock the spinlock,
/// or seeing if the spinlock is already locked. Unsafe for obvious reasons.
#[allow(clippy::mut_from_ref)]
pub unsafe fn get_mut_unchecked(&self) -> &mut T {
&mut *self.inner.get()
}