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authorAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
committerAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
commitb4b6116a13633898cf868f2f103c96a90c4c20f8 (patch)
tree93d1b7e2cfcdf473d8d4ff3ad141fa864f8491f6 /arch/cris/include/arch-v32/arch/system.h
parentedd4be777c953e5faafc80d091d3084b4343f5d3 (diff)
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fedora kernel: d9aad82f3319f3cfd1aebc01234254ef0c37ad84v3.3.2-1
Signed-off-by: Anton Arapov <anton@redhat.com>
Diffstat (limited to 'arch/cris/include/arch-v32/arch/system.h')
-rw-r--r--arch/cris/include/arch-v32/arch/system.h47
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/cris/include/arch-v32/arch/system.h b/arch/cris/include/arch-v32/arch/system.h
new file mode 100644
index 00000000000..76cea99eaa6
--- /dev/null
+++ b/arch/cris/include/arch-v32/arch/system.h
@@ -0,0 +1,47 @@
+#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 "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))
+
+#endif /* _ASM_CRIS_ARCH_SYSTEM_H */