rework FIFO crap so it can also be used for the GXFIFO crapo.

FIFO.cpp

@@ -1,72 +0,0 @@
-/*
-    Copyright 2016-2017 StapleButter
-
-    This file is part of melonDS.
-
-    melonDS is free software: you can redistribute it and/or modify it under
-    the terms of the GNU General Public License as published by the Free
-    Software Foundation, either version 3 of the License, or (at your option)
-    any later version.
-
-    melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
-    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
-    FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License along
-    with melonDS. If not, see http://www.gnu.org/licenses/.
-*/
-
-#include "FIFO.h"
-
-
-FIFO::FIFO(u32 num)
-{
-    NumEntries = num;
-    Entries = new u32[num];
-    Clear();
-}
-
-FIFO::~FIFO()
-{
-    delete[] Entries;
-}
-
-void FIFO::Clear()
-{
-    NumOccupied = 0;
-    ReadPos = 0;
-    WritePos = 0;
-    Entries[ReadPos] = 0;
-}
-
-void FIFO::Write(u32 val)
-{
-    if (IsFull()) return;
-
-    Entries[WritePos] = val;
-
-    WritePos++;
-    if (WritePos >= NumEntries)
-        WritePos = 0;
-
-    NumOccupied++;
-}
-
-u32 FIFO::Read()
-{
-    u32 ret = Entries[ReadPos];
-    if (IsEmpty())
-        return ret;
-
-    ReadPos++;
-    if (ReadPos >= NumEntries)
-        ReadPos = 0;
-
-    NumOccupied--;
-    return ret;
-}
-
-u32 FIFO::Peek()
-{
-    return Entries[ReadPos];
-}

FIFO.h

@@ -21,17 +21,63 @@
 
 #include "types.h"
 
+template<typename T>
 class FIFO
 {
 public:
-    FIFO(u32 num);
-    ~FIFO();
+    FIFO(u32 num)
+    {
+        NumEntries = num;
+        Entries = new T[num];
+        Clear();
+    }
 
-    void Clear();
+    ~FIFO()
+    {
+        delete[] Entries;
+    }
 
-    void Write(u32 val);
-    u32 Read();
-    u32 Peek();
+
+    void Clear()
+    {
+        NumOccupied = 0;
+        ReadPos = 0;
+        WritePos = 0;
+        memset(&Entries[ReadPos], 0, sizeof(T));
+    }
+
+
+    void Write(u32 val)
+    {
+        if (IsFull()) return;
+
+        Entries[WritePos] = val;
+
+        WritePos++;
+        if (WritePos >= NumEntries)
+            WritePos = 0;
+
+        NumOccupied++;
+    }
+
+    T Read()
+    {
+        T ret = Entries[ReadPos];
+        if (IsEmpty())
+            return ret;
+
+        ReadPos++;
+        if (ReadPos >= NumEntries)
+            ReadPos = 0;
+
+        NumOccupied--;
+        return ret;
+    }
+
+    T Peek()
+    {
+        return Entries[ReadPos];
+    }
 
     u32 Level() { return NumOccupied; }
     bool IsEmpty() { return NumOccupied == 0; }
@@ -39,7 +85,7 @@ public:
 
 private:
     u32 NumEntries;
-    u32* Entries;
+    T* Entries;
     u32 NumOccupied;
     u32 ReadPos, WritePos;
 };

GPU3D.cpp

@@ -20,24 +20,41 @@
 #include <string.h>
 #include "NDS.h"
 #include "GPU.h"
+#include "FIFO.h"
 
 
 namespace GPU3D
 {
 
+typedef struct
+{
+    u8 Command;
+    u32 Param;
+
+} CmdFIFOEntry;
+
+FIFO<CmdFIFOEntry>* CmdFIFO;
+FIFO<CmdFIFOEntry>* CmdPIPE;
+
+
 bool Init()
 {
+    CmdFIFO = new FIFO<CmdFIFOEntry>(256);
+    CmdPIPE = new FIFO<CmdFIFOEntry>(4);
+
     return true;
 }
 
 void DeInit()
 {
-    //
+    delete CmdFIFO;
+    delete CmdPIPE;
 }
 
 void Reset()
 {
-    //
+    CmdFIFO->Clear();
+    CmdPIPE->Clear();
 }
 
 }

NDS.cpp

@@ -91,8 +91,8 @@ u32 DMA9Fill[4];
 
 u16 IPCSync9, IPCSync7;
 u16 IPCFIFOCnt9, IPCFIFOCnt7;
-FIFO* IPCFIFO9; // FIFO in which the ARM9 writes
-FIFO* IPCFIFO7;
+FIFO<u32>* IPCFIFO9; // FIFO in which the ARM9 writes
+FIFO<u32>* IPCFIFO7;
 
 u16 DivCnt;
 u32 DivNumerator[2];
@@ -125,8 +125,8 @@ bool Init()
     DMAs[6] = new DMA(1, 2);
     DMAs[7] = new DMA(1, 3);
 
-    IPCFIFO9 = new FIFO(16);
-    IPCFIFO7 = new FIFO(16);
+    IPCFIFO9 = new FIFO<u32>(16);
+    IPCFIFO7 = new FIFO<u32>(16);
 
     if (!NDSCart::Init()) return false;
     if (!GPU::Init()) return false;

melonDS.cbp

@@ -51,7 +51,6 @@
 		<Unit filename="CP15.h" />
 		<Unit filename="DMA.cpp" />
 		<Unit filename="DMA.h" />
-		<Unit filename="FIFO.cpp" />
 		<Unit filename="FIFO.h" />
 		<Unit filename="GPU.cpp" />
 		<Unit filename="GPU.h" />

melonDS.depend

@@ -10,7 +10,7 @@
 
 1481161027 c:\documents\sources\melonds\types.h
 
-1486502137 source:c:\documents\sources\melonds\nds.cpp
+1486503537 source:c:\documents\sources\melonds\nds.cpp
 	<stdio.h>
 	<string.h>
 	"NDS.h"
@@ -80,7 +80,7 @@
 
 1486502258 c:\documents\sources\melonds\spi.h
 
-1486163389 source:c:\documents\sources\melonds\spi.cpp
+1486502498 source:c:\documents\sources\melonds\spi.cpp
 	<stdio.h>
 	<string.h>
 	"NDS.h"
@@ -105,7 +105,7 @@
 1486501225 source:c:\documents\sources\melonds\fifo.cpp
 	"FIFO.h"
 
-1486501199 c:\documents\sources\melonds\fifo.h
+1486503492 c:\documents\sources\melonds\fifo.h
 	"types.h"
 
 1486309616 source:c:\documents\sources\melonds\dma.cpp