From aaa19acbd0f8911a8efacb33a6d9c1e82274e406 Mon Sep 17 00:00:00 2001
From: Tillmann Karras <tilkax@gmail.com>
Date: Sun, 24 May 2020 15:18:03 +0100
Subject: [PATCH] DSP/Interpreter: simplify opcode table by masking

---
 .../Core/DSP/Interpreter/DSPIntTables.cpp     | 104 ++----------------
 1 file changed, 7 insertions(+), 97 deletions(-)

diff --git a/Source/Core/Core/DSP/Interpreter/DSPIntTables.cpp b/Source/Core/Core/DSP/Interpreter/DSPIntTables.cpp
index c3364e1c42..32035f9172 100644
--- a/Source/Core/Core/DSP/Interpreter/DSPIntTables.cpp
+++ b/Source/Core/Core/DSP/Interpreter/DSPIntTables.cpp
@@ -21,7 +21,7 @@ struct InterpreterOpInfo
 };
 
 // clang-format off
-constexpr std::array<InterpreterOpInfo, 214> s_opcodes
+constexpr std::array<InterpreterOpInfo, 124> s_opcodes
 {{
   {0x0000, 0xfffc, nop},
 
@@ -32,109 +32,19 @@ constexpr std::array<InterpreterOpInfo, 214> s_opcodes
 
   {0x0021, 0xffff, halt},
 
-  {0x02d0, 0xffff, ret},
-  {0x02d1, 0xffff, ret},
-  {0x02d2, 0xffff, ret},
-  {0x02d3, 0xffff, ret},
-  {0x02d4, 0xffff, ret},
-  {0x02d5, 0xffff, ret},
-  {0x02d6, 0xffff, ret},
-  {0x02d7, 0xffff, ret},
-  {0x02d8, 0xffff, ret},
-  {0x02d9, 0xffff, ret},
-  {0x02da, 0xffff, ret},
-  {0x02db, 0xffff, ret},
-  {0x02dc, 0xffff, ret},
-  {0x02dd, 0xffff, ret},
-  {0x02de, 0xffff, ret},
-  {0x02df, 0xffff, ret},
+  {0x02d0, 0xfff0, ret},
 
   {0x02ff, 0xffff, rti},
 
-  {0x02b0, 0xffff, call},
-  {0x02b1, 0xffff, call},
-  {0x02b2, 0xffff, call},
-  {0x02b3, 0xffff, call},
-  {0x02b4, 0xffff, call},
-  {0x02b5, 0xffff, call},
-  {0x02b6, 0xffff, call},
-  {0x02b7, 0xffff, call},
-  {0x02b8, 0xffff, call},
-  {0x02b9, 0xffff, call},
-  {0x02ba, 0xffff, call},
-  {0x02bb, 0xffff, call},
-  {0x02bc, 0xffff, call},
-  {0x02bd, 0xffff, call},
-  {0x02be, 0xffff, call},
-  {0x02bf, 0xffff, call},
+  {0x02b0, 0xfff0, call},
 
-  {0x0270, 0xffff, ifcc},
-  {0x0271, 0xffff, ifcc},
-  {0x0272, 0xffff, ifcc},
-  {0x0273, 0xffff, ifcc},
-  {0x0274, 0xffff, ifcc},
-  {0x0275, 0xffff, ifcc},
-  {0x0276, 0xffff, ifcc},
-  {0x0277, 0xffff, ifcc},
-  {0x0278, 0xffff, ifcc},
-  {0x0279, 0xffff, ifcc},
-  {0x027a, 0xffff, ifcc},
-  {0x027b, 0xffff, ifcc},
-  {0x027c, 0xffff, ifcc},
-  {0x027d, 0xffff, ifcc},
-  {0x027e, 0xffff, ifcc},
-  {0x027f, 0xffff, ifcc},
+  {0x0270, 0xfff0, ifcc},
 
-  {0x0290, 0xffff, jcc},
-  {0x0291, 0xffff, jcc},
-  {0x0292, 0xffff, jcc},
-  {0x0293, 0xffff, jcc},
-  {0x0294, 0xffff, jcc},
-  {0x0295, 0xffff, jcc},
-  {0x0296, 0xffff, jcc},
-  {0x0297, 0xffff, jcc},
-  {0x0298, 0xffff, jcc},
-  {0x0299, 0xffff, jcc},
-  {0x029a, 0xffff, jcc},
-  {0x029b, 0xffff, jcc},
-  {0x029c, 0xffff, jcc},
-  {0x029d, 0xffff, jcc},
-  {0x029e, 0xffff, jcc},
-  {0x029f, 0xffff, jcc},
+  {0x0290, 0xfff0, jcc},
 
-  {0x1700, 0xff1f, jmprcc},
-  {0x1701, 0xff1f, jmprcc},
-  {0x1702, 0xff1f, jmprcc},
-  {0x1703, 0xff1f, jmprcc},
-  {0x1704, 0xff1f, jmprcc},
-  {0x1705, 0xff1f, jmprcc},
-  {0x1706, 0xff1f, jmprcc},
-  {0x1707, 0xff1f, jmprcc},
-  {0x1708, 0xff1f, jmprcc},
-  {0x1709, 0xff1f, jmprcc},
-  {0x170a, 0xff1f, jmprcc},
-  {0x170b, 0xff1f, jmprcc},
-  {0x170c, 0xff1f, jmprcc},
-  {0x170d, 0xff1f, jmprcc},
-  {0x170e, 0xff1f, jmprcc},
-  {0x170f, 0xff1f, jmprcc},
+  {0x1700, 0xff10, jmprcc},
 
-  {0x1710, 0xff1f, callr},
-  {0x1711, 0xff1f, callr},
-  {0x1712, 0xff1f, callr},
-  {0x1713, 0xff1f, callr},
-  {0x1714, 0xff1f, callr},
-  {0x1715, 0xff1f, callr},
-  {0x1716, 0xff1f, callr},
-  {0x1717, 0xff1f, callr},
-  {0x1718, 0xff1f, callr},
-  {0x1719, 0xff1f, callr},
-  {0x171a, 0xff1f, callr},
-  {0x171b, 0xff1f, callr},
-  {0x171c, 0xff1f, callr},
-  {0x171d, 0xff1f, callr},
-  {0x171e, 0xff1f, callr},
-  {0x171f, 0xff1f, callr},
+  {0x1710, 0xff10, callr},
 
   {0x1200, 0xff00, sbclr},
   {0x1300, 0xff00, sbset},