Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / sh / kernel / irq_32.c

diff --git a/kernel/arch/sh/kernel/irq_32.c b/kernel/arch/sh/kernel/irq_32.c
new file mode 100644 (file)
index 0000000..e5a755b
--- /dev/null
+++ b/kernel/arch/sh/kernel/irq_32.c
@@ -0,0 +1,57 @@
+/*
+ * SHcompact irqflags support
+ *
+ * Copyright (C) 2006 - 2009 Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/irqflags.h>
+#include <linux/module.h>
+
+void notrace arch_local_irq_restore(unsigned long flags)
+{
+       unsigned long __dummy0, __dummy1;
+
+       if (flags == ARCH_IRQ_DISABLED) {
+               __asm__ __volatile__ (
+                       "stc    sr, %0\n\t"
+                       "or     #0xf0, %0\n\t"
+                       "ldc    %0, sr\n\t"
+                       : "=&z" (__dummy0)
+                       : /* no inputs */
+                       : "memory"
+               );
+       } else {
+               __asm__ __volatile__ (
+                       "stc    sr, %0\n\t"
+                       "and    %1, %0\n\t"
+#ifdef CONFIG_CPU_HAS_SR_RB
+                       "stc    r6_bank, %1\n\t"
+                       "or     %1, %0\n\t"
+#endif
+                       "ldc    %0, sr\n\t"
+                       : "=&r" (__dummy0), "=r" (__dummy1)
+                       : "1" (~ARCH_IRQ_DISABLED)
+                       : "memory"
+               );
+       }
+}
+EXPORT_SYMBOL(arch_local_irq_restore);
+
+unsigned long notrace arch_local_save_flags(void)
+{
+       unsigned long flags;
+
+       __asm__ __volatile__ (
+               "stc    sr, %0\n\t"
+               "and    #0xf0, %0\n\t"
+               : "=&z" (flags)
+               : /* no inputs */
+               : "memory"
+       );
+
+       return flags;
+}
+EXPORT_SYMBOL(arch_local_save_flags);