From 13a6a7b5952eb32205d3e20df0c120b53773c1ba Mon Sep 17 00:00:00 2001
From: Ryan Dwyer <ryandwyer1@gmail.com>
Date: Mon, 1 Nov 2021 17:55:56 +1000
Subject: [PATCH] Decompile func0003e540

---
 src/include/lib/lib_3e3e0.h |  2 +-
 src/lib/lib_3e3e0.c         | 51 ++++++++-----------------------------
 2 files changed, 11 insertions(+), 42 deletions(-)

diff --git a/src/include/lib/lib_3e3e0.h b/src/include/lib/lib_3e3e0.h
index e643b97f6..30a39221e 100644
--- a/src/include/lib/lib_3e3e0.h
+++ b/src/include/lib/lib_3e3e0.h
@@ -4,7 +4,7 @@
 #include "data.h"
 #include "types.h"
 
-ALFxRef func0003e540(u8 arg0);
+ALFxRef func0003e540(s16 index);
 ALFxRef func0003e5b8(s16 index);
 void func0003e674(struct fx *fx, s16 arg1, void *param);
 
diff --git a/src/lib/lib_3e3e0.c b/src/lib/lib_3e3e0.c
index 6bc78eda6..93255e419 100644
--- a/src/lib/lib_3e3e0.c
+++ b/src/lib/lib_3e3e0.c
@@ -1,48 +1,17 @@
 #include <ultra64.h>
 #include <n_libaudio.h>
 #include "naudio/n_synthInternals.h"
-#include "constants.h"
-#include "bss.h"
-#include "lib/lib_3a100.h"
-#include "data.h"
-#include "types.h"
 
-GLOBAL_ASM(
-glabel func0003e540
-/*    3e540:	00042400 */ 	sll	$a0,$a0,0x10
-/*    3e544:	00042403 */ 	sra	$a0,$a0,0x10
-/*    3e548:	27bdfff8 */ 	addiu	$sp,$sp,-8
-/*    3e54c:	3c0e8006 */ 	lui	$t6,%hi(n_syn)
-/*    3e550:	8dcef114 */ 	lw	$t6,%lo(n_syn)($t6)
-/*    3e554:	8dcf0030 */ 	lw	$t7,0x30($t6)
-/*    3e558:	afaf0004 */ 	sw	$t7,0x4($sp)
-/*    3e55c:	8fb80004 */ 	lw	$t8,0x4($sp)
-/*    3e560:	3c087004 */ 	lui	$t0,%hi(n_alAuxBusPull)
-/*    3e564:	2508a100 */ 	addiu	$t0,$t0,%lo(n_alAuxBusPull)
-/*    3e568:	8f190004 */ 	lw	$t9,0x4($t8)
-/*    3e56c:	1728000c */ 	bne	$t9,$t0,.L0003e5a0
-/*    3e570:	00000000 */ 	nop
-/*    3e574:	3c098006 */ 	lui	$t1,%hi(n_syn)
-/*    3e578:	8d29f114 */ 	lw	$t1,%lo(n_syn)($t1)
-/*    3e57c:	000458c0 */ 	sll	$t3,$a0,0x3
-/*    3e580:	01645821 */ 	addu	$t3,$t3,$a0
-/*    3e584:	8d2a0034 */ 	lw	$t2,0x34($t1)
-/*    3e588:	000b58c0 */ 	sll	$t3,$t3,0x3
-/*    3e58c:	014b6021 */ 	addu	$t4,$t2,$t3
-/*    3e590:	10000007 */ 	b	.L0003e5b0
-/*    3e594:	8d820020 */ 	lw	$v0,0x20($t4)
-/*    3e598:	10000003 */ 	b	.L0003e5a8
-/*    3e59c:	00000000 */ 	nop
-.L0003e5a0:
-/*    3e5a0:	10000003 */ 	b	.L0003e5b0
-/*    3e5a4:	00001025 */ 	or	$v0,$zero,$zero
-.L0003e5a8:
-/*    3e5a8:	10000001 */ 	b	.L0003e5b0
-/*    3e5ac:	00000000 */ 	nop
-.L0003e5b0:
-/*    3e5b0:	03e00008 */ 	jr	$ra
-/*    3e5b4:	27bd0008 */ 	addiu	$sp,$sp,0x8
-);
+ALFxRef func0003e540(s16 index)
+{
+	struct N_ALMainBus_s *mainbus = n_syn->mainBus;
+
+	if (mainbus->filter.handler == (void *)n_alAuxBusPull) {
+		return (ALFxRef) n_syn->auxBus[index].fx;
+	} else {
+		return NULL;
+	}
+}
 
 ALFxRef func0003e5b8(s16 index)
 {