fix writeback when rn is also rd in ldr

something *has* to rely on this, as stupid as it seems
2024-12-08 19:48:46 -05:00 · 2024-12-08 19:48:46 -05:00 · 7a4234dcd8
parent 1a1934df00
commit 7a4234dcd8
1 changed files with 1 additions and 1 deletions
--- a/src/ARMInterpreter_LoadStore.cpp
+++ b/src/ARMInterpreter_LoadStore.cpp
@ -157,7 +157,7 @@ void LoadSingle(ARM* cpu, const u8 rd, const u8 rn, const s32 offset, const u16
    {
        if (rn != 15) [[likely]] // r15 writeback fails on arm9
        {
-            cpu->R[rn] = addr;
+            if (rd != rn) cpu->R[rn] = addr;
        }
        else if (cpu->Num == 1) // arm 7
        {