poweropcodes: Fix nabs.

Calculate overflow first before calculating condition codes because the overflow condition is copied from XER.
2024-04-09 02:04:32 -07:00 · 2024-04-09 02:04:32 -07:00 · d897acfd3c
parent 1e57ac408a
commit d897acfd3c
1 changed files with 2 additions and 2 deletions
--- 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);
 }