1 files changed, 50 insertions, 0 deletions
diff --git a/cpukit/score/cpu/x86_64/include/rtems/score/cpu_asm.h b/cpukit/score/cpu/x86_64/include/rtems/score/cpu_asm.h
new file mode 100644
index 0000000000..ac43a6366d
--- /dev/null
+++ b/cpukit/score/cpu/x86_64/include/rtems/score/cpu_asm.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2018.
+ * Amaan Cheval <amaan.cheval@gmail.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _RTEMS_SCORE_CPU_ASM_H
+#define _RTEMS_SCORE_CPU_ASM_H
+
+#if !ASM
+
+#include <rtems/score/basedefs.h>
+
+RTEMS_INLINE_ROUTINE uint8_t inport_byte(uint16_t port)
+{
+  uint8_t ret;
+  __asm__ volatile ( "inb %1, %0"
+                     : "=a" (ret)
+                     : "Nd" (port) );
+  return ret;
+}
+
+RTEMS_INLINE_ROUTINE void outport_byte(uint16_t port, uint8_t val)
+{
+  __asm__ volatile ( "outb %0, %1" : : "a" (val), "Nd" (port) );
+}
+
+#endif /* !ASM */
+
+#endif