summaryrefslogtreecommitdiffstats
path: root/arch/sh/kernel/irq_32.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--arch/sh/kernel/irq_32.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/arch/sh/kernel/irq_32.c b/arch/sh/kernel/irq_32.c
new file mode 100644
index 000000000..e09cdc4ad
--- /dev/null
+++ b/arch/sh/kernel/irq_32.c
@@ -0,0 +1,54 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * SHcompact irqflags support
+ *
+ * Copyright (C) 2006 - 2009 Paul Mundt
+ */
+#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);