From 8012fdcf91d8bf17228e98bad49aa5e4dc01179a Mon Sep 17 00:00:00 2001
From: Ryan Dwyer <ryandwyer1@gmail.com>
Date: Sat, 30 Jan 2021 10:29:38 +1000
Subject: [PATCH] Decompile memcpy

---
 src/lib/ultra/libc/string.c | 28 ++++++++++++----------------
 1 file changed, 12 insertions(+), 16 deletions(-)

diff --git a/src/lib/ultra/libc/string.c b/src/lib/ultra/libc/string.c
index 3e606be72..517abab0e 100644
--- a/src/lib/ultra/libc/string.c
+++ b/src/lib/ultra/libc/string.c
@@ -1,21 +1,17 @@
 #include <ultra64.h>
 
-GLOBAL_ASM(
-glabel memcpy
-/*    4a5e0:	00801025 */ 	or	$v0,$a0,$zero
-/*    4a5e4:	10c00007 */ 	beqz	$a2,.L0004a604
-/*    4a5e8:	00a01825 */ 	or	$v1,$a1,$zero
-.L0004a5ec:
-/*    4a5ec:	906e0000 */ 	lbu	$t6,0x0($v1)
-/*    4a5f0:	24c6ffff */ 	addiu	$a2,$a2,-1
-/*    4a5f4:	24420001 */ 	addiu	$v0,$v0,0x1
-/*    4a5f8:	24630001 */ 	addiu	$v1,$v1,0x1
-/*    4a5fc:	14c0fffb */ 	bnez	$a2,.L0004a5ec
-/*    4a600:	a04effff */ 	sb	$t6,-0x1($v0)
-.L0004a604:
-/*    4a604:	03e00008 */ 	jr	$ra
-/*    4a608:	00801025 */ 	or	$v0,$a0,$zero
-);
+void *memcpy(void *s1, const void *s2, size_t n)
+{
+	char *su1 = (char *)s1;
+	const char *su2 = (const char *)s2;
+
+	while (n > 0) {
+		*su1++ = *su2++;
+		n--;
+	}
+
+	return (void *)s1;
+}
 
 size_t strlen(const char *s)
 {