diff options
Diffstat (limited to 'src/io.rs')
-rw-r--r-- | src/io.rs | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/src/io.rs b/src/io.rs deleted file mode 100644 index bb7cfb0..0000000 --- a/src/io.rs +++ /dev/null @@ -1,37 +0,0 @@ -//! I/O port functionality. - -/// Write 8 bits to port -pub unsafe fn outb(port: u16, val: u8) { - asm!("outb %al, %dx" :: "{dx}"(port), "{al}"(val)); -} - -/// Read 8 bits from port -pub unsafe fn inb(port: u16) -> u8 { - let ret: u8; - asm!("inb %dx, %al" : "={ax}"(ret) : "{dx}"(port) :: "volatile"); - return ret; -} - -/// Write 16 bits to port -pub unsafe fn outw(port: u16, val: u16) { - asm!("outw %ax, %dx" :: "{dx}"(port), "{al}"(val)); -} - -/// Read 16 bits from port -pub unsafe fn inw(port: u16) -> u16 { - let ret: u16; - asm!("inw %dx, %ax" : "={ax}"(ret) : "{dx}"(port) :: "volatile"); - return ret; -} - -/// Write 32 bits to port -pub unsafe fn outl(port: u16, val: u32) { - asm!("outl %eax, %dx" :: "{dx}"(port), "{al}"(val)); -} - -/// Read 32 bits from port -pub unsafe fn inl(port: u16) -> u32 { - let ret: u32; - asm!("inl %dx, %eax" : "={ax}"(ret) : "{dx}"(port) :: "volatile"); - return ret; -} |