am: reply with data for IApplicationFunctions 320 and 321

Switch 2 titles call 320 and 321 during nn::oe::Initialize. 320 replies with
two bytes and 321 with one; the handlers replied with none, leaving the
caller to read stale message words. Answer zero.

2 files changed, 9 insertions, 6 deletions

diff --git a/src/core/hle/service/am/service/application_functions.cpp b/src/core/hle/service/am/service/application_functions.cpp
index 37dfbfa344..5eb501d3f0 100644
--- a/src/core/hle/service/am/service/application_functions.cpp
+++ b/src/core/hle/service/am/service/application_functions.cpp
@@ -571,15 +571,18 @@ Result IApplicationFunctions::GetOperationModeRefreshEvent(
     R_SUCCEED();
 }
 
-Result IApplicationFunctions::Unknown320() {
-    // Called by Switch 2 titles during nn::oe::Initialize; arguments unknown.
+Result IApplicationFunctions::Unknown320(Out<u16> out) {
+    // Called by Switch 2 titles during nn::oe::Initialize. It returns two bytes of data (meaning
+    // unknown); a reply without them left the caller reading stale message words.
     LOG_WARNING(Service_AM, "(STUBBED) called");
+    *out = 0;
     R_SUCCEED();
 }
 
-Result IApplicationFunctions::Unknown321() {
-    // Called by Switch 2 titles right after 320; arguments unknown.
+Result IApplicationFunctions::Unknown321(Out<u8> out) {
+    // Called by Switch 2 titles right after 320; returns one byte (meaning unknown).
     LOG_WARNING(Service_AM, "(STUBBED) called");
+    *out = 0;
     R_SUCCEED();
 }
 
diff --git a/src/core/hle/service/am/service/application_functions.h b/src/core/hle/service/am/service/application_functions.h
index 44b5fadff0..aca2f8c694 100644
--- a/src/core/hle/service/am/service/application_functions.h
+++ b/src/core/hle/service/am/service/application_functions.h
@@ -83,8 +83,8 @@ private:
     Result GetHealthWarningDisappearedSystemEvent(OutCopyHandle<Kernel::KReadableEvent> out_event);
     Result CreateApplicationAndRequestToStart(u64 application_id);
     Result GetOperationModeRefreshEvent(OutCopyHandle<Kernel::KReadableEvent> out_event);
-    Result Unknown320();
-    Result Unknown321();
+    Result Unknown320(Out<u16> out);
+    Result Unknown321(Out<u8> out);
     Result Unknown330(Out<u8> out);
     Result PrepareForJit();