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-rw-r--r--memdump/io.h40
1 files changed, 40 insertions, 0 deletions
diff --git a/memdump/io.h b/memdump/io.h
new file mode 100644
index 00000000..a592402f
--- /dev/null
+++ b/memdump/io.h
@@ -0,0 +1,40 @@
+#ifndef IO_H
+#define IO_H
+
+static inline void outb(unsigned char v, unsigned short p)
+{
+ asm volatile("outb %1,%0" : : "d" (p), "a" (v));
+}
+
+static inline unsigned char inb(unsigned short p)
+{
+ unsigned char v;
+ asm volatile("inb %1,%0" : "=a" (v) : "d" (p));
+ return v;
+}
+
+static inline void outw(unsigned short v, unsigned short p)
+{
+ asm volatile("outw %1,%0" : : "d" (p), "a" (v));
+}
+
+static inline unsigned short inw(unsigned short p)
+{
+ unsigned short v;
+ asm volatile("inw %1,%0" : "=a" (v) : "d" (p));
+ return v;
+}
+
+static inline void outl(unsigned int v, unsigned short p)
+{
+ asm volatile("outl %1,%0" : : "d" (p), "a" (v));
+}
+
+static inline unsigned int inl(unsigned short p)
+{
+ unsigned int v;
+ asm volatile("inl %1,%0" : "=a" (v) : "d" (p));
+ return v;
+}
+
+#endif