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WIP: Userspace console

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This commit is contained in:
Jeremy Soller 2016-09-21 12:18:48 -06:00
commit 61eb0d1ca8
1 changed files with 148 additions and 19 deletions
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15
drivers/vesad/src/primitive.rs
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@ -1,3 +1,16 @@
#[cfg(target_arch = "x86_64")]
#[allow(unused_assignments)]
#[inline(always)]
#[cold]
pub unsafe fn fast_copy(dst: *mut u8, src: *const u8, len: usize) {
asm!("cld
rep movsb"
:
: "{rdi}"(dst as usize), "{rsi}"(src as usize), "{rcx}"(len)
: "cc", "memory"
: "intel", "volatile");
}
#[cfg(target_arch = "x86_64")]
#[allow(unused_assignments)]
#[inline(always)]
@ -15,7 +28,7 @@ pub unsafe fn fast_copy64(dst: *mut u64, src: *const u64, len: usize) {
#[allow(unused_assignments)]
#[inline(always)]
#[cold]
pub unsafe fn fast_set(dst: *mut u32, src: u32, len: usize) {
pub unsafe fn fast_set32(dst: *mut u32, src: u32, len: usize) {
asm!("cld
rep stosd"
: