From 8c643693a99ae1dd2f12f8cafb5c890648ddd77e Mon Sep 17 00:00:00 2001
From: JosJuice <josjuice@gmail.com>
Date: Fri, 20 Jun 2025 10:41:00 +0200
Subject: [PATCH 1/2] PowerPC: Add missing SDRUpdated/MSRUpdated calls

---
 Source/Core/Core/PowerPC/Expression.cpp | 11 +++++++++++
 Source/Core/Core/PowerPC/GDBStub.cpp    |  1 +
 2 files changed, 12 insertions(+)

diff --git a/Source/Core/Core/PowerPC/Expression.cpp b/Source/Core/Core/PowerPC/Expression.cpp
index d522b7d522..bd97e8a8b1 100644
--- a/Source/Core/Core/PowerPC/Expression.cpp
+++ b/Source/Core/Core/PowerPC/Expression.cpp
@@ -447,9 +447,15 @@ void Expression::SynchronizeBindings(Core::System& system, SynchronizeDirection
       break;
     case VarBindingType::SPR:
       if (dir == SynchronizeDirection::From)
+      {
         v->value = static_cast<double>(ppc_state.spr[bind->index]);
+      }
       else
+      {
         ppc_state.spr[bind->index] = static_cast<u32>(static_cast<s64>(v->value));
+        if (bind->index == SPR_SDR)
+          system.GetMMU().SDRUpdated();
+      }
       break;
     case VarBindingType::PCtr:
       if (dir == SynchronizeDirection::From)
@@ -457,9 +463,14 @@ void Expression::SynchronizeBindings(Core::System& system, SynchronizeDirection
       break;
     case VarBindingType::MSR:
       if (dir == SynchronizeDirection::From)
+      {
         v->value = static_cast<double>(ppc_state.msr.Hex);
+      }
       else
+      {
         ppc_state.msr.Hex = static_cast<u32>(static_cast<s64>(v->value));
+        PowerPC::MSRUpdated(ppc_state);
+      }
       break;
     }
   }
diff --git a/Source/Core/Core/PowerPC/GDBStub.cpp b/Source/Core/Core/PowerPC/GDBStub.cpp
index a339ad251a..5074629faa 100644
--- a/Source/Core/Core/PowerPC/GDBStub.cpp
+++ b/Source/Core/Core/PowerPC/GDBStub.cpp
@@ -684,6 +684,7 @@ static void WriteRegister()
       break;
     case 104:
       ppc_state.spr[SPR_SDR] = re32hex(bufptr);
+      system.GetMMU().SDRUpdated();
       break;
     case 105:
       ppc_state.spr[SPR_ASR] = re64hex(bufptr);

From e002fcdf2fa1c14ebce61055325f7ff27e55711e Mon Sep 17 00:00:00 2001
From: JosJuice <josjuice@gmail.com>
Date: Fri, 20 Jun 2025 10:42:10 +0200
Subject: [PATCH 2/2] PowerPC: Use SPR_LR constant in an additional location

---
 Source/Core/Core/PowerPC/Interpreter/Interpreter.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Source/Core/Core/PowerPC/Interpreter/Interpreter.cpp b/Source/Core/Core/PowerPC/Interpreter/Interpreter.cpp
index 63c68a6dc3..b9d0333249 100644
--- a/Source/Core/Core/PowerPC/Interpreter/Interpreter.cpp
+++ b/Source/Core/Core/PowerPC/Interpreter/Interpreter.cpp
@@ -102,7 +102,7 @@ void Interpreter::Trace(const UGeckoInstruction& inst)
                 "INTER PC: {:08x} SRR0: {:08x} SRR1: {:08x} CRval: {:016x} "
                 "FPSCR: {:08x} MSR: {:08x} LR: {:08x} {} {:08x} {}",
                 m_ppc_state.pc, SRR0(m_ppc_state), SRR1(m_ppc_state), m_ppc_state.cr.fields[0],
-                m_ppc_state.fpscr.Hex, m_ppc_state.msr.Hex, m_ppc_state.spr[8], regs, inst.hex,
+                m_ppc_state.fpscr.Hex, m_ppc_state.msr.Hex, m_ppc_state.spr[SPR_LR], regs, inst.hex,
                 ppc_inst);
 }