From d6273ae68bbc42be691d1f360ddb74d3c4a934fc Mon Sep 17 00:00:00 2001
From: Ryan Dwyer <ryandwyer1@gmail.com>
Date: Sat, 30 Jan 2021 01:17:25 +1000
Subject: [PATCH] Decompile __osSiRawReadIo

---
 src/lib/ultra/io/sirawread.c | 35 ++++++++++-------------------------
 1 file changed, 10 insertions(+), 25 deletions(-)

diff --git a/src/lib/ultra/io/sirawread.c b/src/lib/ultra/io/sirawread.c
index 8734e308c..034dff1ba 100644
--- a/src/lib/ultra/io/sirawread.c
+++ b/src/lib/ultra/io/sirawread.c
@@ -1,27 +1,12 @@
 #include <libultra_internal.h>
 
-GLOBAL_ASM(
-glabel __osSiRawReadIo
-/*    4ace0:	27bdffe8 */ 	addiu	$sp,$sp,-24
-/*    4ace4:	afbf0014 */ 	sw	$ra,0x14($sp)
-/*    4ace8:	afa40018 */ 	sw	$a0,0x18($sp)
-/*    4acec:	0c014718 */ 	jal	__osSiDeviceBusy
-/*    4acf0:	afa5001c */ 	sw	$a1,0x1c($sp)
-/*    4acf4:	10400003 */ 	beqz	$v0,.L0004ad04
-/*    4acf8:	8fae0018 */ 	lw	$t6,0x18($sp)
-/*    4acfc:	10000007 */ 	b	.L0004ad1c
-/*    4ad00:	2402ffff */ 	addiu	$v0,$zero,-1
-.L0004ad04:
-/*    4ad04:	3c01a000 */ 	lui	$at,0xa000
-/*    4ad08:	01c17825 */ 	or	$t7,$t6,$at
-/*    4ad0c:	8df80000 */ 	lw	$t8,0x0($t7)
-/*    4ad10:	8fb9001c */ 	lw	$t9,0x1c($sp)
-/*    4ad14:	00001025 */ 	or	$v0,$zero,$zero
-/*    4ad18:	af380000 */ 	sw	$t8,0x0($t9)
-.L0004ad1c:
-/*    4ad1c:	8fbf0014 */ 	lw	$ra,0x14($sp)
-/*    4ad20:	27bd0018 */ 	addiu	$sp,$sp,0x18
-/*    4ad24:	03e00008 */ 	jr	$ra
-/*    4ad28:	00000000 */ 	nop
-/*    4ad2c:	00000000 */ 	nop
-);
+s32 __osSiRawReadIo(u32 devAddr, u32 *data)
+{
+	if (__osSiDeviceBusy()) {
+		return -1;
+	}
+
+	*data = IO_READ(devAddr);
+
+	return 0;
+}