arch: x86 -> x86_64 and build system changes

arch/x86_64/kernel/lock.c

@@ -0,0 +1,50 @@
+/**
+ * \file lock.c
+ *  License details are found in the file LICENSE.
+ * \brief
+ *  Spin lock.
+ * \author Taku Shimosawa  <shimosawa@is.s.u-tokyo.ac.jp> \par
+ *      Copyright (C) 2011 - 2012  Taku Shimosawa
+ */
+/*
+ * HISTORY
+ */
+
+#include <ihk/lock.h>
+
+#if 0
+
+void ihk_mc_spinlock_init(ihk_spinlock_t *lock)
+{
+	*lock = 0;
+}
+
+unsigned long ihk_mc_spinlock_lock(ihk_spinlock_t *lock)
+{
+	int inc = 0x00010000;
+	int tmp;
+	unsigned long flags;
+
+	flags = cpu_disable_interrupt_save();
+
+	asm volatile("lock ; xaddl %0, %1\n"
+	             "movzwl %w0, %2\n\t"
+	             "shrl $16, %0\n\t"
+	             "1:\t"
+	             "cmpl %0, %2\n\t"
+	             "je 2f\n\t"
+	             "rep ; nop\n\t"
+	             "movzwl %1, %2\n\t"
+	             "jmp 1b\n"
+	             "2:"
+	             : "+Q" (inc), "+m" (*lock), "=r" (tmp) : : "memory", "cc");
+	return flags;
+}
+
+void ihk_mc_spinlock_unlock(ihk_spinlock_t *lock, unsigned long flags)
+{
+	asm volatile ("lock incw %0" : "+m"(*lock) : : "memory", "cc");
+	cpu_restore_interrupt(flags);
+}
+
+#endif