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-rw-r--r--target-ppc/cpu.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/target-ppc/cpu.h b/target-ppc/cpu.h
index f15815f11b..c05c503305 100644
--- a/target-ppc/cpu.h
+++ b/target-ppc/cpu.h
@@ -2251,8 +2251,8 @@ static inline ppcmas_tlb_t *booke206_get_tlbm(CPUPPCState *env, const int tlbn,
 {
     int r;
     uint32_t ways = booke206_tlb_ways(env, tlbn);
-    int ways_bits = ffs(ways) - 1;
-    int tlb_bits = ffs(booke206_tlb_size(env, tlbn)) - 1;
+    int ways_bits = ctz32(ways);
+    int tlb_bits = ctz32(booke206_tlb_size(env, tlbn));
     int i;
 
     way &= ways - 1;