1 files changed, 63 insertions, 0 deletions
diff --git a/arch/cris/include/arch-v10/arch/system.h b/arch/cris/include/arch-v10/arch/system.h
new file mode 100644
index 000000000000..4a9cd36c9e16
--- /dev/null
+++ b/arch/cris/include/arch-v10/arch/system.h
@@ -0,0 +1,63 @@
+#ifndef __ASM_CRIS_ARCH_SYSTEM_H
+#define __ASM_CRIS_ARCH_SYSTEM_H
+
+
+/* read the CPU version register */
+
+static inline unsigned long rdvr(void) {
+	unsigned char vr;
+	__asm__ volatile ("move $vr,%0" : "=rm" (vr));
+	return vr;
+}
+
+#define cris_machine_name "cris"
+
+/* read/write the user-mode stackpointer */
+
+static inline unsigned long rdusp(void) {
+	unsigned long usp;
+	__asm__ __volatile__("move $usp,%0" : "=rm" (usp));
+	return usp;
+}
+
+#define wrusp(usp) \
+	__asm__ __volatile__("move %0,$usp" : /* no outputs */ : "rm" (usp))
+
+/* read the current stackpointer */
+
+static inline unsigned long rdsp(void) {
+	unsigned long sp;
+	__asm__ __volatile__("move.d $sp,%0" : "=rm" (sp));
+	return sp;
+}
+
+static inline unsigned long _get_base(char * addr)
+{
+  return 0;
+}
+
+#define nop() __asm__ __volatile__ ("nop");
+
+#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
+#define tas(ptr) (xchg((ptr),1))
+
+struct __xchg_dummy { unsigned long a[100]; };
+#define __xg(x) ((struct __xchg_dummy *)(x))
+
+/* interrupt control.. */
+#define local_save_flags(x)	__asm__ __volatile__ ("move $ccr,%0" : "=rm" (x) : : "memory");
+#define local_irq_restore(x) 	__asm__ __volatile__ ("move %0,$ccr" : : "rm" (x) : "memory");
+#define local_irq_disable() 	__asm__ __volatile__ ( "di" : : :"memory");
+#define local_irq_enable()	__asm__ __volatile__ ( "ei" : : :"memory");
+
+#define irqs_disabled()			\
+({					\
+	unsigned long flags;		\
+	local_save_flags(flags);	\
+	!(flags & (1<<5));		\
+})
+
+/* For spinlocks etc */
+#define local_irq_save(x) __asm__ __volatile__ ("move $ccr,%0\n\tdi" : "=rm" (x) : : "memory");
+
+#endif