From ebc71ed13b391af2d5b2f3d5fa2078064c85004e Mon Sep 17 00:00:00 2001
From: Adrian Siekierka <kontakt@asie.pl>
Date: Sat, 6 Jul 2024 19:12:31 +0200
Subject: [PATCH] nds: put a bit more code in ITCM

---
 arm9/source/emulator.c | 17 +++++++++++++++++
 arm9/source/nds_ppu.c  |  2 --
 source/uxngba-c.c      |  4 ++++
 3 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/arm9/source/emulator.c b/arm9/source/emulator.c
index 7b40f08..ce96959 100644
--- a/arm9/source/emulator.c
+++ b/arm9/source/emulator.c
@@ -146,6 +146,7 @@ screen_deo(Uint8 *d, Uint8 port)
 	}
 }
 
+ITCM_ARM_CODE
 static Uint8
 audio_dei(int instance_id, Uint8 *d, Uint8 port)
 {
@@ -157,6 +158,7 @@ audio_dei(int instance_id, Uint8 *d, Uint8 port)
 	}
 }
 
+ITCM_ARM_CODE
 static void
 audio_deo(int instance_id, Uint8 *d, Uint8 port)
 {
@@ -179,20 +181,35 @@ audio_deo(int instance_id, Uint8 *d, Uint8 port)
 	}
 }
 
+ITCM_ARM_CODE
 static Uint8 audio0_dei(Uint8 *d, Uint8 port) { return audio_dei(0, d, port); }
+ITCM_ARM_CODE
 static Uint8 audio1_dei(Uint8 *d, Uint8 port) { return audio_dei(1, d, port); }
+ITCM_ARM_CODE
 static Uint8 audio2_dei(Uint8 *d, Uint8 port) { return audio_dei(2, d, port); }
+ITCM_ARM_CODE
 static Uint8 audio3_dei(Uint8 *d, Uint8 port) { return audio_dei(3, d, port); }
+ITCM_ARM_CODE
 static Uint8 file0_dei(Uint8 *d, Uint8 port) { return file_dei(0, d, port); }
+ITCM_ARM_CODE
 static Uint8 file1_dei(Uint8 *d, Uint8 port) { return file_dei(1, d, port); }
+ITCM_ARM_CODE
 static void audio0_deo(Uint8 *d, Uint8 port) { audio_deo(0, d, port); }
+ITCM_ARM_CODE
 static void audio1_deo(Uint8 *d, Uint8 port) { audio_deo(1, d, port); }
+ITCM_ARM_CODE
 static void audio2_deo(Uint8 *d, Uint8 port) { audio_deo(2, d, port); }
+ITCM_ARM_CODE
 static void audio3_deo(Uint8 *d, Uint8 port) { audio_deo(3, d, port); }
+ITCM_ARM_CODE
 static void file0_deo(Uint8 *d, Uint8 port) { file_deo(0, u.ram.dat, d, port); }
+ITCM_ARM_CODE
 static void file1_deo(Uint8 *d, Uint8 port) { file_deo(1, u.ram.dat, d, port); }
 
+ITCM_ARM_CODE
 static Uint8 nds_system_dei(Uint8 *d, Uint8 port) { return system_dei(&u, port); }
+
+ITCM_ARM_CODE
 static void
 nds_system_deo(Uint8 *d, Uint8 port)
 {
diff --git a/arm9/source/nds_ppu.c b/arm9/source/nds_ppu.c
index 5600ea1..1c48b84 100644
--- a/arm9/source/nds_ppu.c
+++ b/arm9/source/nds_ppu.c
@@ -253,9 +253,7 @@ nds_ppu_1bpp(NdsPpu *p, Uint32 *layer, int16_t x, int16_t y, Uint8 *sprite, Uint
 	tile_dirty[(y + 7) >> 3] |= dirtyflag;
 }
 
-#ifndef DEBUG
 ITCM_ARM_CODE
-#endif
 void
 nds_ppu_2bpp(NdsPpu *p, Uint32 *layer, int16_t x, int16_t y, Uint8 *sprite, Uint8 color, Uint8 flipx, Uint8 flipy)
 {
diff --git a/source/uxngba-c.c b/source/uxngba-c.c
index 41d36e1..64cc723 100644
--- a/source/uxngba-c.c
+++ b/source/uxngba-c.c
@@ -44,18 +44,21 @@ DTCM_BSS u8 device_data[256];
 __attribute__((aligned(65536)))
 u8 uxn_ram[64 * 1024 * RAM_PAGES];
 
+ITCM_ARM_CODE
 void
 deo_stub(u8 *dev, u8 port) {
     (void)dev;
     (void)port;
 }
 
+ITCM_ARM_CODE
 void
 deo2_wrap(u8 *dev, u8 port, uxn_deo_t deo1) {
     deo1(dev,port);
     deo1(dev,port+1);
 }
 
+ITCM_ARM_CODE
 Uint8
 dei_stub(u8 *dev, u8 port) {
     return dev[port];
@@ -63,6 +66,7 @@ dei_stub(u8 *dev, u8 port) {
 
 unsigned int __aeabi_uidiv(unsigned int num, unsigned int den);
 
+ITCM_ARM_CODE
 unsigned int
 uxn_uidiv(unsigned int num, unsigned int den) {
     return den ? __aeabi_uidiv(num, den) : 0;