1 files changed, 42 insertions, 0 deletions
diff --git a/com32/include/sys/io.h b/com32/include/sys/io.h
new file mode 100644
index 00000000..460f2309
--- /dev/null
+++ b/com32/include/sys/io.h
@@ -0,0 +1,42 @@
+#ifndef _SYS_IO_H
+#define _SYS_IO_H
+
+#include <inttypes.h>
+
+static inline uint8_t inb(uint16_t p)
+{
+  uint8_t v;
+  asm volatile("inb %1,%0" : "=a" (v) : "Nd" (p));
+  return v;
+}
+
+static inline uint16_t inw(uint16_t p)
+{
+  uint16_t v;
+  asm volatile("inw %1,%0" : "=a" (v) : "Nd" (p));
+  return v;
+}
+
+static inline uint32_t inl(uint16_t p)
+{
+  uint32_t v;
+  asm volatile("inl %1,%0" : "=a" (v) : "Nd" (p));
+  return v;
+}
+
+static inline void outb(uint8_t v, uint16_t p)
+{
+  asm volatile("outb %0,%1" : : "a" (v), "Nd" (p));
+}
+
+static inline void outw(uint16_t v, uint16_t p)
+{
+  asm volatile("outw %0,%1" : : "a" (v), "Nd" (p));
+}
+
+static inline void outl(uint32_t v, uint16_t p)
+{
+  asm volatile("outl %0,%1" : : "a" (v), "Nd" (p));
+}
+
+#endif /* _SYS_IO_H */