From 383093c5fffde7b29649ca4f452e892299b337c6 Mon Sep 17 00:00:00 2001
From: StapleButter <thetotalworm@gmail.com>
Date: Mon, 6 Mar 2017 18:13:57 +0100
Subject: make NEG update flags correctly (oops). also misc graphics notes
 added.

---
 ARMInterpreter_ALU.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'ARMInterpreter_ALU.cpp')

diff --git a/ARMInterpreter_ALU.cpp b/ARMInterpreter_ALU.cpp
index 88b69e7..d6c5abd 100644
--- a/ARMInterpreter_ALU.cpp
+++ b/ARMInterpreter_ALU.cpp
@@ -1301,8 +1301,10 @@ void T_NEG_REG(ARM* cpu)
     u32 b = cpu->R[(cpu->CurInstr >> 3) & 0x7];
     u32 res = -b;
     cpu->R[cpu->CurInstr & 0x7] = res;
-    cpu->SetNZ(res & 0x80000000,
-               !res);
+    cpu->SetNZCV(res & 0x80000000,
+                 !res,
+                 CARRY_SUB(0, b),
+                 OVERFLOW_SUB(0, b, res));
 }
 
 void T_CMP_REG(ARM* cpu)
-- 
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