From 4809c612bc5eabf158d7a4656a98f5601c6bf104 Mon Sep 17 00:00:00 2001 From: Johan Bengtsson Date: Tue, 7 Dec 2010 12:01:44 +0000 Subject: [PATCH] target-arm: Fix mixup in decoding of saturating add and sub The thumb2 decoder contained a mixup between the bit controlling doubling and the bit controlling if the operation was an add or a sub. Signed-off-by: Johan Bengtsson Signed-off-by: Peter Maydell Reviewed-by: Nathan Froyd --- target-arm/translate.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/target-arm/translate.c b/target-arm/translate.c index 183928bdda..947de6d18a 100644 --- a/target-arm/translate.c +++ b/target-arm/translate.c @@ -7713,9 +7713,9 @@ static int disas_thumb2_insn(CPUState *env, DisasContext *s, uint16_t insn_hw1) /* Saturating add/subtract. */ tmp = load_reg(s, rn); tmp2 = load_reg(s, rm); - if (op & 2) - gen_helper_double_saturate(tmp, tmp); if (op & 1) + gen_helper_double_saturate(tmp, tmp); + if (op & 2) gen_helper_sub_saturate(tmp, tmp2, tmp); else gen_helper_add_saturate(tmp, tmp, tmp2); -- GitLab