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[Qemu-ppc] Patch: fix to gen_mcrxr() in target-ppc/translate.c

From: Sorav Bansal
Subject: [Qemu-ppc] Patch: fix to gen_mcrxr() in target-ppc/translate.c
Date: Tue, 10 Jun 2014 19:21:03 +0530


I saw a minor bug in the gen_mcrxr() function in
target-ppc/translate.c. Here is the patch for your consideration. I
have verified the patch by checking the generated code using a
SAT-solver based verification tool.


>From 31f39e258cbb289c2e0a3c3adde87cde7ae02a15 Mon Sep 17 00:00:00 2001
From: Sorav Bansal <address@hidden>
Date: Tue, 10 Jun 2014 19:01:12 +0530
Subject: [PATCH] Fix to the translation of mcrxr instruction

 target-ppc/translate.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index f089014..b513998 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -4147,8 +4147,8 @@ static void gen_mcrxr(DisasContext *ctx)
     tcg_gen_trunc_tl_i32(t0, cpu_so);
     tcg_gen_trunc_tl_i32(t1, cpu_ov);
     tcg_gen_trunc_tl_i32(dst, cpu_ca);
-    tcg_gen_shri_i32(t0, t0, 2);
-    tcg_gen_shri_i32(t1, t1, 1);
+    tcg_gen_shli_i32(dst, dst, 2);
+    tcg_gen_shli_i32(t1, t1, 1);
     tcg_gen_or_i32(dst, dst, t0);
     tcg_gen_or_i32(dst, dst, t1);

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