1 files changed, 92 insertions, 0 deletions
diff --git a/arch/i386/sys/io.h b/arch/i386/sys/io.h
new file mode 100644
index 0000000..4ff5d85
--- /dev/null
+++ b/arch/i386/sys/io.h
@@ -0,0 +1,92 @@
+#pragma once
+
+/* port listings */
+enum UART {
+  COM1 = 0x3f8,
+  COM2 = 0x2f8,
+  COM3 = 0x3e8,
+  COM4 = 0x2e8,
+  COM5 = 0x5f8,
+  COM6 = 0x4f8,
+  COM7 = 0x5e8,
+  COM8 = 0x4e8
+};
+
+static __inline__ void
+outb(unsigned char val, unsigned short port)
+{
+  __asm__("outb %0,%1" : : "a"(val), "dN"(port));
+}
+
+static __inline__ void
+outw(unsigned short val, unsigned short port)
+{
+  __asm__("outw %0,%1" : : "a"(val), "dN"(port));
+}
+
+static __inline__ void
+outl(unsigned int val, unsigned short port)
+{
+  __asm__("outl %0,%1" : : "a"(val), "dN"(port));
+}
+
+static __inline__ unsigned char
+inb(unsigned short port)
+{
+  unsigned char val;
+  __asm__("inb %1,%0" : "=a"(val) : "dN"(port));
+  return val;
+}
+
+static __inline__ unsigned short
+inw(unsigned short port)
+{
+  unsigned short val;
+  __asm__("inw %1,%0" : "=a"(val) : "dN"(port));
+  return val;
+}
+
+static __inline__ unsigned int
+inl(unsigned short port)
+{
+  unsigned int val;
+  __asm__("inl %1,%0" : "=a"(val) : "dN"(port));
+  return val;
+}
+
+static __inline__ void
+outsb(unsigned short port, const void *__buf, unsigned long __n)
+{
+  __asm__("cld; rep; outsb" : "+S"(__buf), "+c"(__n) : "d"(port));
+}
+
+static __inline__ void
+outsw(unsigned short port, const void *__buf, unsigned long __n)
+{
+  __asm__("cld; rep; outsw" : "+S"(__buf), "+c"(__n) : "d"(port));
+}
+
+static __inline__ void
+outsl(unsigned short port, const void *__buf, unsigned long __n)
+{
+  __asm__("cld; rep; outsl" : "+S"(__buf), "+c"(__n) : "d"(port));
+}
+
+static __inline__ void
+insb(unsigned short port, void *__buf, unsigned long __n)
+{
+  __asm__("cld; rep; insb" : "+D"(__buf), "+c"(__n) : "d"(port));
+}
+
+static __inline__ void
+insw(unsigned short port, void *__buf, unsigned long __n)
+{
+  __asm__("cld; rep; insw" : "+D"(__buf), "+c"(__n) : "d"(port));
+}
+
+static __inline__ void
+insl(unsigned short port, void *__buf, unsigned long __n)
+{
+  __asm__("cld; rep; insl" : "+D"(__buf), "+c"(__n) : "d"(port));
+}
+