From 05617a332b059fd630420784b04d12099079d25a Mon Sep 17 00:00:00 2001
From: Mefiresu <15063879+Mefiresu@users.noreply.github.com>
Date: Mon, 12 May 2025 18:16:14 +0200
Subject: [PATCH] dmae: Implement 16bit endian swap for DMAECopyMem (#1564)

---
 src/Cafe/OS/libs/dmae/dmae.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/Cafe/OS/libs/dmae/dmae.cpp b/src/Cafe/OS/libs/dmae/dmae.cpp
index 7c513784..c35fce2e 100644
--- a/src/Cafe/OS/libs/dmae/dmae.cpp
+++ b/src/Cafe/OS/libs/dmae/dmae.cpp
@@ -36,6 +36,16 @@ void dmaeExport_DMAECopyMem(PPCInterpreter_t* hCPU)
 			dstBuffer[i] = _swapEndianU32(srcBuffer[i]);
 		}
 	}
+	else if( hCPU->gpr[6] == DMAE_ENDIAN_16 )
+	{
+		// swap per uint16
+		uint16* srcBuffer = (uint16*)memory_getPointerFromVirtualOffset(hCPU->gpr[4]);
+		uint16* dstBuffer = (uint16*)memory_getPointerFromVirtualOffset(hCPU->gpr[3]);
+		for(uint32 i=0; i<hCPU->gpr[5]*2; i++)
+		{
+			dstBuffer[i] = _swapEndianU16(srcBuffer[i]);
+		}
+	}
 	else
 	{
 		cemuLog_logDebug(LogType::Force, "DMAECopyMem(): Unsupported endian swap\n");