DSP: Move the LLE core to a library. Added DSP assembler from gdtool, start cleaning it up. Create a new program called "DSPTool" which will become a more up to date replacement for gdtool from the devkitpro, automatically incorporating all our findings as we make them. This program depends on the new library. It can *ALMOST* roundtrip (asm->disasm->asm) hermes' DSP mixer at this point. Sorry about the unfinished Sconscript work - I'll fix it soon if nobody else does it first.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@2955 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Core/DSPCore/Src/DSPAnalyzer.h

@@ -0,0 +1,51 @@
+// Copyright (C) 2003-2009 Dolphin Project.
+
+// This program 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, version 2.0.
+
+// This program 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 2.0 for more details.
+
+// A copy of the GPL 2.0 should have been included with the program.
+// If not, see http://www.gnu.org/licenses/
+
+// Official SVN repository and contact information can be found at
+// http://code.google.com/p/dolphin-emu/
+
+// Basic code analysis.
+
+#include "DSPInterpreter.h"
+
+namespace DSPAnalyzer {
+
+#define ISPACE 65536
+
+
+
+// Useful things to detect:
+// * Loop endpoints - so that we can avoid checking for loops every cycle.
+
+enum
+{
+	CODE_START_OF_INST = 1,
+	CODE_IDLE_SKIP = 2,
+	CODE_LOOP_END = 4,
+};
+
+// Easy to query array covering the whole of instruction memory.
+// Just index by address.
+// This one will be helpful for debuggers and jits.
+extern u8 code_flags[ISPACE];
+
+// This one should be called every time IRAM changes - which is basically
+// every time that a new ucode gets uploaded, and never else. At that point,
+// we can do as much static analysis as we want - but we should always throw
+// all old analysis away. Luckily the entire address space is only 64K code
+// words and the actual code space 8K instructions in total, so we can do
+// some pretty expensive analysis if necessary.
+void Analyze();
+
+}  // namespace