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.

diff --git a/libctru/include/3ds/svc.h b/libctru/include/3ds/svc.h
index 402194d218be2d7a8d4a1260ef3ae8174c9a1361..0de77b092552d2a81c57728427d144324388ed29 100644 (file)
--- 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 1969ddc97524050284f13bdde1cc5d7db8f88ffc..98ab6b341f9a201e88382ee45a3cff066dcb4573 100644 (file)
--- 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
+