diff options
Diffstat (limited to 'src/io.rs')
-rw-r--r-- | src/io.rs | 14 |
1 files changed, 8 insertions, 6 deletions
@@ -1,12 +1,14 @@ //! I/O port functionality. +use core::arch::asm; + /// Write 8 bits to port /// /// # Safety /// Needs IO privileges. #[inline] pub unsafe fn outb(port: u16, val: u8) { - llvm_asm!("outb %al, %dx" :: "{dx}"(port), "{al}"(val)); + asm!("outb %al, %dx", in("al") val, in("dx") port, options(att_syntax)); } /// Read 8 bits from port @@ -16,7 +18,7 @@ pub unsafe fn outb(port: u16, val: u8) { #[inline] pub unsafe fn inb(port: u16) -> u8 { let ret: u8; - llvm_asm!("inb %dx, %al" : "={ax}"(ret) : "{dx}"(port) :: "volatile"); + asm!("inb %dx, %al", in("dx") port, out("al") ret, options(att_syntax)); ret } @@ -26,7 +28,7 @@ pub unsafe fn inb(port: u16) -> u8 { /// Needs IO privileges. #[inline] pub unsafe fn outw(port: u16, val: u16) { - llvm_asm!("outw %ax, %dx" :: "{dx}"(port), "{al}"(val)); + asm!("outw %ax, %dx", in("ax") val, in("dx") port, options(att_syntax)); } /// Read 16 bits from port @@ -36,7 +38,7 @@ pub unsafe fn outw(port: u16, val: u16) { #[inline] pub unsafe fn inw(port: u16) -> u16 { let ret: u16; - llvm_asm!("inw %dx, %ax" : "={ax}"(ret) : "{dx}"(port) :: "volatile"); + asm!("inw %dx, %ax", in("dx") port, out("ax") ret, options(att_syntax)); ret } @@ -46,7 +48,7 @@ pub unsafe fn inw(port: u16) -> u16 { /// Needs IO privileges. #[inline] pub unsafe fn outl(port: u16, val: u32) { - llvm_asm!("outl %eax, %dx" :: "{dx}"(port), "{al}"(val)); + asm!("outl %eax, %dx", in("eax") val, in("dx") port, options(att_syntax)); } /// Read 32 bits from port @@ -56,7 +58,7 @@ pub unsafe fn outl(port: u16, val: u32) { #[inline] pub unsafe fn inl(port: u16) -> u32 { let ret: u32; - llvm_asm!("inl %dx, %eax" : "={ax}"(ret) : "{dx}"(port) :: "volatile"); + asm!("inl %dx, %eax", out("eax") ret, in("dx") port, options(att_syntax)); ret } |