This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / include / asm-cris / arch-v32 / system.h

diff --git a/include/asm-cris/arch-v32/system.h b/include/asm-cris/arch-v32/system.h
new file mode 100644 (file)
index 0000000..a3d75d5
--- /dev/null
+++ b/include/asm-cris/arch-v32/system.h
@@ -0,0 +1,79 @@
+#ifndef _ASM_CRIS_ARCH_SYSTEM_H
+#define _ASM_CRIS_ARCH_SYSTEM_H
+
+#include <linux/config.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 "crisv32"
+
+/* Read the user-mode stack pointer. */
+static inline unsigned long rdusp(void)
+{
+       unsigned long usp;
+
+       __asm__ __volatile__ ("move $usp, %0" : "=rm" (usp));
+       return usp;
+}
+
+/* Read the current stack pointer. */
+static inline unsigned long rdsp(void)
+{
+       unsigned long sp;
+
+       __asm__ __volatile__ ("move.d $sp, %0" : "=rm" (sp));
+       return sp;
+}
+
+/* Write the user-mode stack pointer. */
+#define wrusp(usp) __asm__ __volatile__ ("move %0, $usp" : : "rm" (usp))
+
+#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))
+
+/* Used for interrupt control. */
+#define local_save_flags(x) \
+       __asm__ __volatile__ ("move $ccs, %0" : "=rm" (x) : : "memory");
+
+#define local_irq_restore(x) \
+       __asm__ __volatile__ ("move %0, $ccs" : : "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 << I_CCS_BITNR));  \
+})
+
+/* Used for spinlocks, etc. */
+#define local_irq_save(x) \
+       __asm__ __volatile__ ("move $ccs, %0\n\tdi" : "=rm" (x) : : "memory");
+
+#ifdef CONFIG_SMP
+typedef struct {
+       volatile unsigned int lock __attribute__ ((aligned(4)));
+#ifdef CONFIG_PREEMPT
+       unsigned int break_lock;
+#endif
+} spinlock_t;
+#endif
+
+#endif /* _ASM_CRIS_ARCH_SYSTEM_H */