From d897acfd3c00e2ab529ca621ac2f24ca6e8f108b Mon Sep 17 00:00:00 2001
From: joevt <joevt@shaw.ca>
Date: Tue, 9 Apr 2024 02:04:32 -0700
Subject: [PATCH] poweropcodes: Fix nabs.

Calculate overflow first before calculating condition codes because the overflow condition is copied from XER.
---
 cpu/ppc/poweropcodes.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cpu/ppc/poweropcodes.cpp b/cpu/ppc/poweropcodes.cpp
index 5583727..9a0df83 100644
--- a/cpu/ppc/poweropcodes.cpp
+++ b/cpu/ppc/poweropcodes.cpp
@@ -332,10 +332,10 @@ void dppc_interpreter::power_nabs() {
     ppc_grab_regsda(ppc_cur_instruction);
     uint32_t ppc_result_d = (int32_t(ppc_result_a) < 0) ? ppc_result_a : -ppc_result_a;
 
-    if (rec)
-        ppc_changecrf0(ppc_result_d);
     if (ov)
         ppc_state.spr[SPR::XER] &= ~XER::OV;
+    if (rec)
+        ppc_changecrf0(ppc_result_d);
 
     ppc_store_iresult_reg(reg_d, ppc_result_d);
 }