From f986b91d06c66a2a7370884fad9a985b56af6675 Mon Sep 17 00:00:00 2001
From: Ryan Dwyer <ryandwyer1@gmail.com>
Date: Mon, 1 Nov 2021 17:54:16 +1000
Subject: [PATCH] Decompile func0003e5b8

---
 Makefile                    |  1 +
 src/include/lib/lib_3e3e0.h |  2 +-
 src/lib/lib_3e3e0.c         | 48 ++++++++++---------------------------
 3 files changed, 14 insertions(+), 37 deletions(-)

diff --git a/Makefile b/Makefile
index b3a4d2fcf..9e4fb5632 100644
--- a/Makefile
+++ b/Makefile
@@ -112,6 +112,7 @@ G_C_FILES := \
 	src/lib/lib_317f0.c \
 	src/lib/lib_39c80.c \
 	src/lib/lib_3a100.c \
+	src/lib/lib_3e3e0.c \
 	src/lib/mp3.c \
 	src/lib/speaker.c
 
diff --git a/src/include/lib/lib_3e3e0.h b/src/include/lib/lib_3e3e0.h
index 875cfaccb..e643b97f6 100644
--- a/src/include/lib/lib_3e3e0.h
+++ b/src/include/lib/lib_3e3e0.h
@@ -5,7 +5,7 @@
 #include "types.h"
 
 ALFxRef func0003e540(u8 arg0);
-ALFxRef func0003e5b8(u8 arg0);
+ALFxRef func0003e5b8(s16 index);
 void func0003e674(struct fx *fx, s16 arg1, void *param);
 
 #endif
diff --git a/src/lib/lib_3e3e0.c b/src/lib/lib_3e3e0.c
index 82a27e9cf..6bc78eda6 100644
--- a/src/lib/lib_3e3e0.c
+++ b/src/lib/lib_3e3e0.c
@@ -1,4 +1,6 @@
 #include <ultra64.h>
+#include <n_libaudio.h>
+#include "naudio/n_synthInternals.h"
 #include "constants.h"
 #include "bss.h"
 #include "lib/lib_3a100.h"
@@ -42,39 +44,13 @@ glabel func0003e540
 /*    3e5b4:	27bd0008 */ 	addiu	$sp,$sp,0x8
 );
 
-GLOBAL_ASM(
-glabel func0003e5b8
-/*    3e5b8:	00042400 */ 	sll	$a0,$a0,0x10
-/*    3e5bc:	00042403 */ 	sra	$a0,$a0,0x10
-/*    3e5c0:	27bdfff8 */ 	addiu	$sp,$sp,-8
-/*    3e5c4:	3c0e8006 */ 	lui	$t6,%hi(n_syn)
-/*    3e5c8:	8dcef114 */ 	lw	$t6,%lo(n_syn)($t6)
-/*    3e5cc:	8dcf0030 */ 	lw	$t7,0x30($t6)
-/*    3e5d0:	afaf0004 */ 	sw	$t7,0x4($sp)
-/*    3e5d4:	8fb80004 */ 	lw	$t8,0x4($sp)
-/*    3e5d8:	3c087004 */ 	lui	$t0,%hi(n_alAuxBusPull)
-/*    3e5dc:	2508a100 */ 	addiu	$t0,$t0,%lo(n_alAuxBusPull)
-/*    3e5e0:	8f190004 */ 	lw	$t9,0x4($t8)
-/*    3e5e4:	1728000c */ 	bne	$t9,$t0,.L0003e618
-/*    3e5e8:	00000000 */ 	nop
-/*    3e5ec:	3c098006 */ 	lui	$t1,%hi(n_syn)
-/*    3e5f0:	8d29f114 */ 	lw	$t1,%lo(n_syn)($t1)
-/*    3e5f4:	000458c0 */ 	sll	$t3,$a0,0x3
-/*    3e5f8:	01645821 */ 	addu	$t3,$t3,$a0
-/*    3e5fc:	8d2a0034 */ 	lw	$t2,0x34($t1)
-/*    3e600:	000b58c0 */ 	sll	$t3,$t3,0x3
-/*    3e604:	014b6021 */ 	addu	$t4,$t2,$t3
-/*    3e608:	10000007 */ 	b	.L0003e628
-/*    3e60c:	8d820044 */ 	lw	$v0,0x44($t4)
-/*    3e610:	10000003 */ 	b	.L0003e620
-/*    3e614:	00000000 */ 	nop
-.L0003e618:
-/*    3e618:	10000003 */ 	b	.L0003e628
-/*    3e61c:	00001025 */ 	or	$v0,$zero,$zero
-.L0003e620:
-/*    3e620:	10000001 */ 	b	.L0003e628
-/*    3e624:	00000000 */ 	nop
-.L0003e628:
-/*    3e628:	03e00008 */ 	jr	$ra
-/*    3e62c:	27bd0008 */ 	addiu	$sp,$sp,0x8
-);
+ALFxRef func0003e5b8(s16 index)
+{
+	struct N_ALMainBus_s *mainbus = n_syn->mainBus;
+
+	if (mainbus->filter.handler == (void *)n_alAuxBusPull) {
+		return (ALFxRef) n_syn->auxBus[index].unk44;
+	} else {
+		return NULL;
+	}
+}