[XAM] Added XamProfileOpen support and xam_profile.cc dedicated file for XamProfile exports

- Modified implementation of MountProfile to allow custom mount paths

src/xenia/kernel/xam/profile_manager.cc

@@ -253,9 +253,12 @@ void ProfileManager::ModifyGamertag(const uint64_t xuid, std::string gamertag) {
   DismountProfile(xuid);
 }
 
-bool ProfileManager::MountProfile(const uint64_t xuid) {
+bool ProfileManager::MountProfile(const uint64_t xuid, std::string mount_path) {
   std::filesystem::path profile_path = GetProfilePath(xuid);
-  std::string mount_path = fmt::format("{:016X}", xuid) + ':';
+  if (mount_path.empty()) {
+    mount_path = fmt::format("{:016X}", xuid);
+  }
+  mount_path += ':';
 
   auto device =
       std::make_unique<vfs::HostPathDevice>(mount_path, profile_path, false);

src/xenia/kernel/xam/profile_manager.h

@@ -86,7 +86,7 @@ class ProfileManager {
 
   void ModifyGamertag(const uint64_t xuid, std::string gamertag);
 
-  bool MountProfile(const uint64_t xuid);
+  bool MountProfile(const uint64_t xuid, std::string mount_path = "");
   bool DismountProfile(const uint64_t xuid);
 
   void Login(const uint64_t xuid, const uint8_t user_index = XUserIndexAny,

src/xenia/kernel/xam/xam_module_export_groups.inc

@@ -24,6 +24,7 @@ XE_MODULE_EXPORT_GROUP(xam, Net)
 XE_MODULE_EXPORT_GROUP(xam, Notify)
 XE_MODULE_EXPORT_GROUP(xam, NUI)
 XE_MODULE_EXPORT_GROUP(xam, Party)
+XE_MODULE_EXPORT_GROUP(xam, Profile)
 XE_MODULE_EXPORT_GROUP(xam, Task)
 XE_MODULE_EXPORT_GROUP(xam, UI)
 XE_MODULE_EXPORT_GROUP(xam, User)

src/xenia/kernel/xam/xam_profile.cc

@@ -0,0 +1,31 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2025 Xenia Canary. All rights reserved.                          *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include "xenia/kernel/kernel_state.h"
+#include "xenia/kernel/util/shim_utils.h"
+#include "xenia/kernel/xam/xam_private.h"
+
+namespace xe {
+namespace kernel {
+namespace xam {
+
+dword_result_t XamProfileOpen_entry(qword_t xuid, lpstring_t mount_path) {
+  const bool result =
+      kernel_state()->xam_state()->profile_manager()->MountProfile(
+          xuid, mount_path.value());
+
+  return result ? X_ERROR_SUCCESS : X_ERROR_INVALID_PARAMETER;
+}
+DECLARE_XAM_EXPORT1(XamProfileOpen, kNone, kImplemented);
+
+}  // namespace xam
+}  // namespace kernel
+}  // namespace xe
+
+DECLARE_XAM_EMPTY_REGISTER_EXPORTS(Profile);