From bee4ff8454d21644f731703173f449dfeda0fec4 Mon Sep 17 00:00:00 2001
From: Lioncash <mathew1800@gmail.com>
Date: Fri, 2 Jan 2015 18:23:21 -0500
Subject: [PATCH] armemu: Fix missing Q flag check for SMLSD.
---
src/core/arm/interpreter/armemu.cpp | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/src/core/arm/interpreter/armemu.cpp b/src/core/arm/interpreter/armemu.cpp
index 40e4837d8f..12166bf795 100644
--- a/src/core/arm/interpreter/armemu.cpp
+++ b/src/core/arm/interpreter/armemu.cpp
@@ -6480,9 +6480,13 @@ L_stm_s_takeabort:
// SMUSD and SMLSD
else {
state->Reg[rd_idx] = product1 - product2;
-
- if (BITS(12, 15) != 15)
+
+ if (BITS(12, 15) != 15) {
state->Reg[rd_idx] += state->Reg[ra_idx];
+
+ if (ARMul_AddOverflowQ(product1 - product2, state->Reg[ra_idx]))
+ SETQ;
+ }
}
return 1;
--
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