From 0bfd019dc06ef9cf66d657400c21a889a22efa80 Mon Sep 17 00:00:00 2001
From: StapleButter <thetotalworm@gmail.com>
Date: Sat, 15 Sep 2018 02:47:34 +0200
Subject: [PATCH] start implementing actual shito

(also looks like the test bench in libui_sdl/main.cpp snuck in with the copyright update. shit)
---
 src/ARM.cpp  | 21 +++++++++++++++++++++
 src/ARM.h    |  2 ++
 src/CP15.cpp | 19 +++++++++++++++++++
 src/CP15.h   |  2 ++
 src/NDS.cpp  | 16 ++++++++++++++++
 src/NDS.h    |  3 +++
 6 files changed, 63 insertions(+)

diff --git a/src/ARM.cpp b/src/ARM.cpp
index dee40f29..fbf4be2b 100644
--- a/src/ARM.cpp
+++ b/src/ARM.cpp
@@ -161,6 +161,27 @@ void ARM::Reset()
     JumpTo(ExceptionBase);
 }
 
+void ARM::Savestate(Savestate* file)
+{
+    file->Section(Num ? "ARM7" : "ARM9");
+
+    file->Var32(&(u32)Cycles);
+    file->Var32(&(u32)CyclesToRun);
+    file->Var32(&Halted);
+
+    file->VarArray(R, 16*sizeof(u32));
+    file->Var32(&CPSR);
+    file->VarArray(R_FIQ, 8*sizeof(u32));
+    file->VarArray(R_SVC, 3*sizeof(u32));
+    file->VarArray(R_ABT, 3*sizeof(u32));
+    file->VarArray(R_IRQ, 3*sizeof(u32));
+    file->VarArray(R_UND, 3*sizeof(u32));
+    file->Var32(&CurInstr);
+    file->VarArray(NextInstr, 2*sizeof(u32));
+
+    file->Var32(&ExceptionBase);
+}
+
 void ARM::JumpTo(u32 addr, bool restorecpsr)
 {
     if (restorecpsr)
diff --git a/src/ARM.h b/src/ARM.h
index be583625..85ddfc04 100644
--- a/src/ARM.h
+++ b/src/ARM.h
@@ -38,6 +38,8 @@ public:
 
     void Reset();
 
+    void Savestate(Savestate* file);
+
     void JumpTo(u32 addr, bool restorecpsr = false);
     void RestoreCPSR();
 
diff --git a/src/CP15.cpp b/src/CP15.cpp
index 8bf68fb8..97414db0 100644
--- a/src/CP15.cpp
+++ b/src/CP15.cpp
@@ -57,6 +57,25 @@ void Reset()
     DTCMSize = 0;
 }
 
+void Savestate(Savestate* file)
+{
+    file->Section("CP15");
+
+    file->Var32(&Control);
+
+    file->Var32(&DTCMSetting);
+    file->Var32(&ITCMSetting);
+
+    if (!file->Saving)
+    {
+        UpdateDTCMSetting();
+        UpdateITCMSetting();
+    }
+
+    file->VarArray(ITCM, 0x8000);
+    file->VarArray(DTCM, 0x4000);
+}
+
 
 void UpdateDTCMSetting()
 {
diff --git a/src/CP15.h b/src/CP15.h
index b448bf2a..2e7f5f01 100644
--- a/src/CP15.h
+++ b/src/CP15.h
@@ -24,6 +24,8 @@ namespace CP15
 
 void Reset();
 
+void Savestate(Savestate* file);
+
 void UpdateDTCMSetting();
 void UpdateITCMSetting();
 
diff --git a/src/NDS.cpp b/src/NDS.cpp
index bf5e0ef8..909e8c25 100644
--- a/src/NDS.cpp
+++ b/src/NDS.cpp
@@ -356,6 +356,22 @@ void Stop()
     SPU::Stop();
 }
 
+void Savestate(Savestate* file)
+{
+    // NDS shito
+
+    ARM9->Savestate(file);
+    ARM7->Savestate(file);
+    CP15::Savestate(file);
+
+    // NDSCart
+    // GPU
+    // SPU
+    // SPI
+    // RTC
+    // wifi
+}
+
 bool LoadROM(const char* path, bool direct)
 {
     if (NDSCart::LoadROM(path, direct))
diff --git a/src/NDS.h b/src/NDS.h
index 68f37e91..9887323f 100644
--- a/src/NDS.h
+++ b/src/NDS.h
@@ -19,6 +19,7 @@
 #ifndef NDS_H
 #define NDS_H
 
+#include "Savestate.h"
 #include "types.h"
 
 namespace NDS
@@ -108,6 +109,8 @@ void DeInit();
 void Reset();
 void Stop();
 
+void Savestate(Savestate* file);
+
 bool LoadROM(const char* path, bool direct);
 void LoadBIOS();
 void SetupDirectBoot();