From 90692fee609901cf7f0b020adcaf075eec5151c7 Mon Sep 17 00:00:00 2001
From: Tony Wasserka <NeoBrainX@gmail.com>
Date: Sat, 20 Sep 2014 14:45:45 +0200
Subject: [PATCH] Add the system call outputDebugString.

This doesn't do anything on retail consoles, but homebrew developers can use it to debug applications in Citra or in other 3DS emulators which HLE this system call.
---
 libctru/include/3ds/svc.h |  1 +
 libctru/source/svc.s      | 10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/libctru/include/3ds/svc.h b/libctru/include/3ds/svc.h
index 402194d..0de77b0 100644
--- a/libctru/include/3ds/svc.h
+++ b/libctru/include/3ds/svc.h
@@ -48,5 +48,6 @@ s32  svcGetProcessInfo(s64* out, Handle process, u32 type);
 s32  svcConnectToPort(volatile Handle* out, const char* portName);
 s32  svcSendSyncRequest(Handle session);
 s32  svcGetProcessId(u32 *out, Handle handle);
+s32  svcOutputDebugString(const char* str, int length);
 
 #endif
diff --git a/libctru/source/svc.s b/libctru/source/svc.s
index 1969ddc..98ab6b3 100644
--- a/libctru/source/svc.s
+++ b/libctru/source/svc.s
@@ -195,3 +195,13 @@ svcGetProcessId:
 	ldr r3, [sp], #4
 	str r1, [r3]
 	bx lr
+
+.global svcOutputDebugString
+.type svcOutputDebugString, %function
+svcOutputDebugString:
+   str r0, [sp,#-0x4]!
+   svc 0x3D
+   ldr r2, [sp], #4
+   str r1, [r2]
+   bx lr
+