dmae: Implement 16bit endian swap for DMAECopyMem (#1564)

Mefiresu · web-flow · commit 05617a332b05 · 2025-05-12T18:16:14.000+02:00
diff --git 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");

Original file line number	Diff line number	Diff line change
`@@ -36,6 +36,16 @@ void dmaeExport_DMAECopyMem(PPCInterpreter_t* hCPU)`
`36`	`36`	`dstBuffer[i] = _swapEndianU32(srcBuffer[i]);`
`37`	`37`	`}`
`38`	`38`	`}`
	`39`	`+ else if( hCPU->gpr[6] == DMAE_ENDIAN_16 )`
	`40`	`+ {`
	`41`	`+ // swap per uint16`
	`42`	`+ uint16* srcBuffer = (uint16*)memory_getPointerFromVirtualOffset(hCPU->gpr[4]);`
	`43`	`+ uint16* dstBuffer = (uint16*)memory_getPointerFromVirtualOffset(hCPU->gpr[3]);`
	`44`	`+ for(uint32 i=0; i<hCPU->gpr[5]*2; i++)`
	`45`	`+ {`
	`46`	`+ dstBuffer[i] = _swapEndianU16(srcBuffer[i]);`
	`47`	`+ }`
	`48`	`+ }`
`39`	`49`	`else`
`40`	`50`	`{`
`41`	`51`	`cemuLog_logDebug(LogType::Force, "DMAECopyMem(): Unsupported endian swap\n");`