From 294b8b1ac82352e23a83ce9cad7af9d3b98365ef Mon Sep 17 00:00:00 2001 From: dzwdz Date: Mon, 9 Aug 2021 22:48:19 +0200 Subject: move the x86 port io code to a separate file --- src/kernel/arch/i386/port_io.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) create mode 100644 src/kernel/arch/i386/port_io.h (limited to 'src/kernel/arch/i386/port_io.h') diff --git a/src/kernel/arch/i386/port_io.h b/src/kernel/arch/i386/port_io.h new file mode 100644 index 0000000..db755b4 --- /dev/null +++ b/src/kernel/arch/i386/port_io.h @@ -0,0 +1,12 @@ +#include + +inline void port_outb(uint16_t port, uint8_t val) { + asm volatile("outb %0, %1" : : "a" (val), "Nd" (port)); +} + +inline uint8_t port_inb(uint16_t port) { + uint8_t val; + asm volatile("inb %1, %0" : "=a" (val) : "Nd" (port)); + return val; +} + -- cgit v1.2.3