From 1c157d1fc8b0ea2ca69fc2029c844c0cc5eb6db7 Mon Sep 17 00:00:00 2001
From: Tillmann Karras <tilkax@gmail.com>
Date: Fri, 12 Dec 2025 00:53:45 +0000
Subject: [PATCH 1/3] GekkoDisassembler: fix conditional twi opcode

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

diff --git a/Source/Core/Common/GekkoDisassembler.cpp b/Source/Core/Common/GekkoDisassembler.cpp
index 18ed219e643..71217d62695 100644
--- a/Source/Core/Common/GekkoDisassembler.cpp
+++ b/Source/Core/Common/GekkoDisassembler.cpp
@@ -493,7 +493,7 @@ void GekkoDisassembler::trapi(u32 in, unsigned char dmode)
 
   if (cnd != nullptr)
   {
-    m_opcode = fmt::format("t{}{}", dmode ? 'd' : 'w', cnd);
+    m_opcode = fmt::format("t{}{}i", dmode ? 'd' : 'w', cnd);
   }
   else
   {

From df7caeab3fb17648785ad86777acd194330c0117 Mon Sep 17 00:00:00 2001
From: Tillmann Karras <tilkax@gmail.com>
Date: Fri, 12 Dec 2025 01:00:36 +0000
Subject: [PATCH 2/3] GekkoDisassembler: fix ps_sel operands

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

diff --git a/Source/Core/Common/GekkoDisassembler.cpp b/Source/Core/Common/GekkoDisassembler.cpp
index 71217d62695..e0786f7643f 100644
--- a/Source/Core/Common/GekkoDisassembler.cpp
+++ b/Source/Core/Common/GekkoDisassembler.cpp
@@ -1094,7 +1094,7 @@ void GekkoDisassembler::ps(u32 inst)
 
   case 23:
     m_opcode = "ps_sel";
-    m_operands = fmt::format("p{}>=0?p{}:p{}", FD, FA, FC);
+    m_operands = fmt::format("p{}, p{}>=0?p{}:p{}", FD, FA, FC, FB);
     return;
 
   case 24:

From c52dd23c58b8e93a12d6be5c0fe8cc68fc11c026 Mon Sep 17 00:00:00 2001
From: Tillmann Karras <tilkax@gmail.com>
Date: Fri, 12 Dec 2025 01:23:57 +0000
Subject: [PATCH 3/3] GekkoDisassembler: drop unsupported opcodes

---
 Source/Core/Common/GekkoDisassembler.cpp | 50 ------------------------
 1 file changed, 50 deletions(-)

diff --git a/Source/Core/Common/GekkoDisassembler.cpp b/Source/Core/Common/GekkoDisassembler.cpp
index e0786f7643f..6dc66a8f1e3 100644
--- a/Source/Core/Common/GekkoDisassembler.cpp
+++ b/Source/Core/Common/GekkoDisassembler.cpp
@@ -918,16 +918,6 @@ void GekkoDisassembler::mtb(u32 in)
   }
 }
 
-void GekkoDisassembler::sradi(u32 in)
-{
-  int s = (int)PPCGETD(in);
-  int a = (int)PPCGETA(in);
-  int bsh = (int)(((in & 2) << 4) + PPCGETB(in));
-
-  m_opcode = fmt::format("sradi{}", (in & 1) ? "." : "");
-  m_operands = fmt::format("{}, {}, {}", regnames[a], regnames[s], bsh);
-}
-
 void GekkoDisassembler::ldst(u32 in, std::string_view name, char reg)
 {
   int s = (int)PPCGETD(in);
@@ -1443,30 +1433,6 @@ u32* GekkoDisassembler::DoDisassembly(bool big_endian)
     ori(in, "andis.");
     break;
 
-  case 30:
-    switch ((in >> 2) & 0x7)
-    {
-    case 0:
-      rld(in, "icl", 0);  // rldicl
-      break;
-    case 1:
-      rld(in, "icr", 0);  // rldicr
-      break;
-    case 2:
-      rld(in, "ic", 0);  // rldic
-      break;
-    case 3:
-      rld(in, "imi", 0);  // rldimi
-      break;
-    case 4:
-      rld(in, in & 2 ? "cl" : "cr", 1);  // rldcl, rldcr
-      break;
-    default:
-      ill(in);
-      break;
-    }
-    break;
-
   case 31:
     switch (PPCGETIDX2(in))
     {
@@ -1813,10 +1779,6 @@ u32* GekkoDisassembler::DoDisassembly(bool big_endian)
       dab(in, "orc", 7, 1, 0, -1);
       break;
 
-    case 413:
-      sradi(in);  // sradi
-      break;
-
     case 434:
       if (in & (PPCDMASK | PPCAMASK))
         ill(in);
@@ -2291,18 +2253,6 @@ u32* GekkoDisassembler::DoDisassembly(bool big_endian)
         }
         break;
 
-      case 814:
-        fdabc(in, "fctid", 9);
-        break;
-
-      case 815:
-        fdabc(in, "fctidz", 9);
-        break;
-
-      case 846:
-        fdabc(in, "fcfid", 9);
-        break;
-
       default:
         ill(in);
         break;