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-rw-r--r--mdk-stage1/dietlibc/include/sys/io.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/mdk-stage1/dietlibc/include/sys/io.h b/mdk-stage1/dietlibc/include/sys/io.h
index 5edf33a57..40a0d459b 100644
--- a/mdk-stage1/dietlibc/include/sys/io.h
+++ b/mdk-stage1/dietlibc/include/sys/io.h
@@ -8,7 +8,7 @@ extern int iopl(int level) __THROW;
#ifndef __STRICT_ANSI__
/* anyone have a cleaner solution for this mess? */
-#ifdef __i386__
+#if defined(__i386__) || defined(__x86_64__)
static inline unsigned char inb (unsigned short int port) {
unsigned char _v;
__asm__ __volatile__ ("inb %w1,%0":"=a" (_v):"Nd" (port));