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-rw-r--r--src/arch/arm/isa/decoder.isa3
1 files changed, 1 insertions, 2 deletions
diff --git a/src/arch/arm/isa/decoder.isa b/src/arch/arm/isa/decoder.isa
index f43395c19..046e52950 100644
--- a/src/arch/arm/isa/decoder.isa
+++ b/src/arch/arm/isa/decoder.isa
@@ -113,8 +113,7 @@ format DataOp {
0x1: decode OPCODE {
0x9: BranchExchange::bx({{ }});
0xb: PredOp::clz({{
- unsigned lsb = findLsbSet(Rm);
- Rd = (lsb > 31) ? 32 : lsb;
+ Rd = ((Rm == 0) ? 32 : (31 - findMsbSet(Rm)));
}});
}
0x2: decode OPCODE {