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authorLinus Torvalds <torvalds@linux-foundation.org>2008-11-01 09:51:51 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-11-01 09:51:51 -0700
commit0242909a6135e10a28822c64f9ad50fdad52757c (patch)
treec5f9c8abe95a65433e6ac356871f2379c02488fe /arch/cris/include/arch-v10/arch/system.h
parent0a6d2fac615972142715d736289abeeb7382e81d (diff)
parent556dcee7b829e5c350c3ffdbdb87a8b15aa3c5d3 (diff)
Merge branch 'cris_move' of git://www.jni.nu/cris
* 'cris_move' of git://www.jni.nu/cris: [CRIS] Move header files from include to arch/cris/include. [CRISv32] Remove warning in io.h
Diffstat (limited to 'arch/cris/include/arch-v10/arch/system.h')
-rw-r--r--arch/cris/include/arch-v10/arch/system.h63
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 00000000000..4a9cd36c9e1
--- /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