From fbf131b5c043b27e0b1543374bb144e3e426f723 Mon Sep 17 00:00:00 2001
From: Tyler Murphy <=>
Date: Sun, 16 Jul 2023 02:54:32 -0400
Subject: initial

---
 libk/include/sys.h | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 libk/include/sys.h

(limited to 'libk/include/sys.h')

diff --git a/libk/include/sys.h b/libk/include/sys.h
new file mode 100644
index 0000000..75618e8
--- /dev/null
+++ b/libk/include/sys.h
@@ -0,0 +1,51 @@
+#include <stdint.h>
+
+static inline uint8_t inb(uint16_t port) {
+	uint8_t ret;
+	__asm__ volatile ("inb %1, %0" : "=a"(ret) : "Nd"(port));
+	return ret;
+}
+
+static inline void outb(uint16_t port, uint8_t val) {
+	__asm__ volatile ("outb %0, %1" : : "a"(val), "Nd"(port));
+}
+
+static inline uint16_t inw(uint16_t port) {
+	uint16_t ret;
+	__asm__ volatile ("inw %1, %0" : "=a"(ret) : "Nd"(port));
+	return ret;
+}
+
+static inline void outw(uint16_t port, uint16_t val) {
+	__asm__ volatile ("outw %0, %1" : : "a"(val), "Nd"(port));
+}
+
+static inline uint32_t inl(uint16_t port) {
+	uint32_t ret;
+	__asm__ volatile ("inl %1, %0" : "=a"(ret) : "Nd"(port));
+	return ret;
+}
+
+static inline void outl(uint16_t port, uint32_t val) {
+	__asm__ volatile ("outl %0, %1" : : "a"(val), "Nd"(port));
+}
+
+static inline void io_wait(void) {
+	outb(0x80, 0);
+}
+
+static inline void int_enable(void) {
+	__asm__ volatile ("sti");
+}
+
+static inline void int_disable(void) {
+	__asm__ volatile ("cli");
+}
+
+static inline void int_wait(void) {
+	__asm__ volatile ("sti; hlt");
+}
+
+static inline void halt(void) {
+	__asm__ volatile ("cli; hlt");
+}
-- 
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