From 25bb73b8c19a783cbd2636edb40f3629db977713 Mon Sep 17 00:00:00 2001
From: emoose <abc@cock.li>
Date: Thu, 26 Dec 2019 02:19:57 +0000
Subject: [PATCH] [XAM/Misc] Impl. IsSystem/IsXbox1/IsSystemExperience &
 FirstRunExperienceShouldRun exports

---
 src/xenia/kernel/xam/xam_misc.cc | 42 +++++++++++++++++++++++++++++---
 1 file changed, 38 insertions(+), 4 deletions(-)

diff --git a/src/xenia/kernel/xam/xam_misc.cc b/src/xenia/kernel/xam/xam_misc.cc
index cef45f6ef..f84bd96ec 100644
--- a/src/xenia/kernel/xam/xam_misc.cc
+++ b/src/xenia/kernel/xam/xam_misc.cc
@@ -5,6 +5,8 @@
 #include "xenia/kernel/xam/xam_private.h"
 #include "xenia/xbox.h"
 
+DECLARE_bool(xconfig_initial_setup);
+
 namespace xe {
 namespace kernel {
 namespace xam {
@@ -15,14 +17,46 @@ dword_result_t XamDoesOmniNeedConfiguration() {
 DECLARE_XAM_EXPORT1(XamDoesOmniNeedConfiguration, kMisc, kStub);
 
 dword_result_t XamFirstRunExperienceShouldRun() {
-    return 0;
+  return cvars::xconfig_initial_setup;
 }
 DECLARE_XAM_EXPORT1(XamFirstRunExperienceShouldRun, kMisc, kStub);
 
-dword_result_t XamIsXbox1TitleId(dword_t title_id) {
-  return 0;
+dword_result_t XamIsSystemTitleId(dword_t title_id) {
+  if (title_id == 0) {
+    return true;
+  }
+
+  if ((title_id & 0xFF000000) == 0x58000000u) {
+    return (title_id & 0xFF0000) != 0x410000;  // if 'X' but not 'XA' (XBLA)
+  }
+
+  return (title_id >> 16) == 0xFFFE;  // FFFExxxx are always system apps
 }
-DECLARE_XAM_EXPORT1(XamIsXbox1TitleId, kMisc, kStub);
+DECLARE_XAM_EXPORT1(XamIsSystemTitleId, kNone, kImplemented);
+
+dword_result_t XamIsXbox1TitleId(dword_t title_id) {
+  if (title_id == 0xFFFE0000) {
+    return true;  // Xbox OG dashboard ID?
+  }
+
+  if (title_id == 0 || (title_id & 0xFF000000) == 0xFF000000) {
+    return false;  // X360 system apps
+  }
+
+  return (title_id & 0x7FFF) < 0x7D0;  // lower 15 bits smaller than 2000
+}
+DECLARE_XAM_EXPORT1(XamIsXbox1TitleId, kNone, kImplemented);
+
+dword_result_t XamIsSystemExperienceTitleId(dword_t title_id) {
+  if ((title_id >> 16) == 0x584A) {  // 'XJ'
+    return true;
+  }
+  if ((title_id >> 16) == 0x5848) {  // 'XH'
+    return true;
+  }
+  return title_id == 0x584E07D2 || title_id == 0x584E07D1;  // XN-2002 / XN-2001
+}
+DECLARE_XAM_EXPORT1(XamIsSystemExperienceTitleId, kNone, kImplemented);
 
 void RegisterMiscExports(xe::cpu::ExportResolver* export_resolver,
                            KernelState* kernel_state) {}