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Use core intrinsics instead of memset

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This commit is contained in:
Jeremy Soller 2016-11-14 10:50:00 -07:00
parent b83bdb3643
commit 7e71c85c80
1 changed files with 7 additions and 3 deletions
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10
kernel/context/memory.rs
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@ -1,8 +1,8 @@
use alloc::arc::{Arc, Weak}; use alloc::arc::{Arc, Weak};
use collections::VecDeque; use collections::VecDeque;
use core::intrinsics;
use spin::Mutex; use spin::Mutex;
use arch::externs::memset;
use arch::memory::Frame; use arch::memory::Frame;
use arch::paging::{ActivePageTable, InactivePageTable, Page, PageIter, PhysicalAddress, VirtualAddress}; use arch::paging::{ActivePageTable, InactivePageTable, Page, PageIter, PhysicalAddress, VirtualAddress};
use arch::paging::entry::{self, EntryFlags}; use arch::paging::entry::{self, EntryFlags};
@ -202,7 +202,9 @@ impl Memory {
if clear { if clear {
assert!(flush && self.flags.contains(entry::WRITABLE)); assert!(flush && self.flags.contains(entry::WRITABLE));
unsafe { memset(self.start_address().get() as *mut u8, 0, self.size); } unsafe {
intrinsics::write_bytes(self.start_address().get() as *mut u8, 0, self.size);
}
} }
} }
@ -300,7 +302,9 @@ impl Memory {
if clear { if clear {
assert!(flush); assert!(flush);
unsafe { memset((self.start.get() + self.size) as *mut u8, 0, new_size - self.size); } unsafe {
intrinsics::write_bytes((self.start.get() + self.size) as *mut u8, 0, new_size - self.size);
}
} }
} else if new_size < self.size { } else if new_size < self.size {
let mut flush_all = false; let mut flush_all = false;