From 423361e4d11dcbd663ad0fbb63ee95f8a5e3ee6d Mon Sep 17 00:00:00 2001
From: jSTE0 <98854293+jSTE0@users.noreply.github.com>
Date: Fri, 4 Feb 2022 22:52:50 +0000
Subject: [PATCH] dsp: Mark function-scope const arrays as static

Avoids recreating the arrays on the stack on every entry to the function
and moves them to the ro section.
---
 dsp1.cpp | 2 +-
 dsp3.cpp | 4 ++--
 dsp4.cpp | 4 ++--
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/dsp1.cpp b/dsp1.cpp
index 392b44d2..66c038d0 100644
--- a/dsp1.cpp
+++ b/dsp1.cpp
@@ -522,7 +522,7 @@ static void DSP1_Op0C (void)
 
 static void DSP1_Parameter (int16 Fx, int16 Fy, int16 Fz, int16 Lfe, int16 Les, int16 Aas, int16 Azs, int16 *Vof, int16 *Vva, int16 *Cx, int16 *Cy)
 {
-	const int16	MaxAZS_Exp[16] =
+	static const int16	MaxAZS_Exp[16] =
 	{
 		0x38b4, 0x38b7, 0x38ba, 0x38be, 0x38c0, 0x38c4, 0x38c7, 0x38ca,
 		0x38ce,	0x38d0, 0x38d4, 0x38d7, 0x38da, 0x38dd, 0x38e0, 0x38e4
diff --git a/dsp3.cpp b/dsp3.cpp
index 47d16f82..4505f9e6 100644
--- a/dsp3.cpp
+++ b/dsp3.cpp
@@ -929,12 +929,12 @@ static void DSP3_OP1E_D (int16 move, int16 *lo, int16 *hi)
 
 static void DSP3_OP1E_D1 (int16 move, int16 *lo, int16 *hi)
 {
-	const uint16	HiAdd[] =
+	static const uint16	HiAdd[] =
 	{
 		0x00, 0xFF, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0x01, 0x00, 0xFF, 0x00
 	};
 
-	const uint16	LoAdd[] =
+	static const uint16	LoAdd[] =
 	{
 		0x00, 0x00, 0x01, 0x01, 0x00, 0xFF, 0xFF, 0x00
 	};
diff --git a/dsp4.cpp b/dsp4.cpp
index 73bcf016..46440fb6 100644
--- a/dsp4.cpp
+++ b/dsp4.cpp
@@ -90,7 +90,7 @@ static int32 DSP4_READ_DWORD (void)
 static int16 DSP4_Inverse (int16 value)
 {
 	// Attention: This lookup table is not verified
-	const uint16	div_lut[64] =
+	static const uint16	div_lut[64] =
 	{
 		0x0000, 0x8000, 0x4000, 0x2aaa, 0x2000, 0x1999, 0x1555, 0x1249,
 		0x1000, 0x0e38, 0x0ccc, 0x0ba2, 0x0aaa, 0x09d8, 0x0924, 0x0888,
@@ -1080,7 +1080,7 @@ static void DSP4_OP09 (void)
 
 static void DSP4_OP0A (int16 n2, int16 *o1, int16 *o2, int16 *o3, int16 *o4)
 {
-	const uint16	OP0A_Values[16] =
+	static const uint16	OP0A_Values[16] =
 	{
 		0x0000, 0x0030, 0x0060, 0x0090, 0x00c0, 0x00f0, 0x0120, 0x0150,
 		0xfe80, 0xfeb0, 0xfee0, 0xff10, 0xff40, 0xff70, 0xffa0, 0xffd0