#define nop do { } while (0)
#ifdef __powerpc64__
-#define read_barrier() \
- __asm__ __volatile__ ("lwsync" : : : "memory")
+#define read_barrier() __asm__ __volatile__ ("lwsync" : : : "memory")
#else
-#define read_barrier() \
- __asm__ __volatile__ ("sync" : : : "memory")
+#define read_barrier() __asm__ __volatile__ ("sync" : : : "memory")
#endif
+#define write_barrier() __asm__ __volatile__ ("sync" : : : "memory")
+
+static inline int __ilog2(unsigned long bitmask)
+{
+ int lz;
+
+ asm ("cntlzw %0,%1" : "=r" (lz) : "r" (bitmask));
+ return 31 - lz;
+}
+
+static inline int arch_ffz(unsigned long bitmask)
+{
+ if ((bitmask = ~bitmask) == 0)
+ return 32;
+ return __ilog2(bitmask & -bitmask);
+}
+
+static inline unsigned long long get_cpu_clock(void)
+{
+ unsigned int tbl, tbu0, tbu1;
+ unsigned long long ret;
+
+ do {
+ __asm__ __volatile__ ("mftbu %0" : "=r"(tbu0));
+ __asm__ __volatile__ ("mftb %0" : "=r"(tbl) );
+ __asm__ __volatile__ ("mftbu %0" : "=r"(tbu1));
+ } while (tbu0 != tbu1);
+
+ ret = (((unsigned long long)tbu0) << 32) | tbl;
+ return ret;
+}
+
+#define ARCH_HAVE_FFZ
+#define ARCH_HAVE_CPU_CLOCK
+
#endif