From: Blue Swirl <blauwirbel@gmail.com>
Date: Sat, 14 May 2011 07:14:57 +0000 (+0000)
Subject: sparc64: fix incorrect BPcc target sign extension
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=86f1f2aee8fa8dd6f25ead09433fa0c888db6d37;p=qemu.git

sparc64: fix incorrect BPcc target sign extension

Fix wrong number of bits used when sign extending the branch offset of BPcc
instructions.

Reported-by: Artyom Tarasenko <atar4qemu@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
---

diff --git a/target-sparc/translate.c b/target-sparc/translate.c
index 9222cde160..fe99f0bfea 100644
--- a/target-sparc/translate.c
+++ b/target-sparc/translate.c
@@ -1893,7 +1893,7 @@ static void disas_sparc_insn(DisasContext * dc)
                     int cc;
 
                     target = GET_FIELD_SP(insn, 0, 18);
-                    target = sign_extend(target, 18);
+                    target = sign_extend(target, 19);
                     target <<= 2;
                     cc = GET_FIELD_SP(insn, 20, 21);
                     if (cc == 0)