1 files changed, 24 insertions, 0 deletions

diff --git a/src/include/asm/io.h b/src/include/asm/io.h
new file mode 100644
index 0000000..d5cc42a
--- /dev/null
+++ b/src/include/asm/io.h
@@ -0,0 +1,24 @@
+#define outb(value,port) \
+__asm__ ("outb %%al,%%dx"::"a" (value),"d" (port))
+
+
+#define inb(port) ({ \
+unsigned char _v; \
+__asm__ volatile ("inb %%dx,%%al":"=a" (_v):"d" (port)); \
+_v; \
+})
+
+#define outb_p(value,port) \
+__asm__ ("outb %%al,%%dx\n" \
+                "\tjmp 1f\n" \
+                "1:\tjmp 1f\n" \
+                "1:"::"a" (value),"d" (port))
+
+#define inb_p(port) ({ \
+unsigned char _v; \
+__asm__ volatile ("inb %%dx,%%al\n" \
+        "\tjmp 1f\n" \
+        "1:\tjmp 1f\n" \
+        "1:":"=a" (_v):"d" (port)); \
+_v; \
+})