From eb300d0aa726e340df0feda1dfa688669642bcc4 Mon Sep 17 00:00:00 2001
From: Stephen Miller <56742918+StevenMiller123@users.noreply.github.com>
Date: Tue, 1 Apr 2025 19:41:40 -0500
Subject: [PATCH] libraries: Proper ulobjmgr stubs (#2740)

* Better ulobjmgr stubs

Main goal is to stop all the Unknown stub spam in titles using libSceUlt.

* Address review comments

* Update ulobjmgr.cpp
---
 CMakeLists.txt                           |  2 ++
 src/core/libraries/libs.cpp              |  2 ++
 src/core/libraries/ulobjmgr/ulobjmgr.cpp | 45 ++++++++++++++++++++++++
 src/core/libraries/ulobjmgr/ulobjmgr.h   | 14 ++++++++
 4 files changed, 63 insertions(+)
 create mode 100644 src/core/libraries/ulobjmgr/ulobjmgr.cpp
 create mode 100644 src/core/libraries/ulobjmgr/ulobjmgr.h

diff --git a/CMakeLists.txt b/CMakeLists.txt
index d50dc187d..b3aba5d13 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -578,6 +578,8 @@ set(MISC_LIBS  src/core/libraries/screenshot/screenshot.cpp
                src/core/libraries/screenshot/screenshot.h
                src/core/libraries/move/move.cpp
                src/core/libraries/move/move.h
+               src/core/libraries/ulobjmgr/ulobjmgr.cpp
+               src/core/libraries/ulobjmgr/ulobjmgr.h
 )
 
 set(DEV_TOOLS src/core/devtools/layer.cpp
diff --git a/src/core/libraries/libs.cpp b/src/core/libraries/libs.cpp
index cd0fe650b..d0f82556e 100644
--- a/src/core/libraries/libs.cpp
+++ b/src/core/libraries/libs.cpp
@@ -50,6 +50,7 @@
 #include "core/libraries/system/sysmodule.h"
 #include "core/libraries/system/systemservice.h"
 #include "core/libraries/system/userservice.h"
+#include "core/libraries/ulobjmgr/ulobjmgr.h"
 #include "core/libraries/usbd/usbd.h"
 #include "core/libraries/videodec/videodec.h"
 #include "core/libraries/videodec/videodec2.h"
@@ -116,6 +117,7 @@ void InitHLELibs(Core::Loader::SymbolsResolver* sym) {
     Libraries::Zlib::RegisterlibSceZlib(sym);
     Libraries::Hmd::RegisterlibSceHmd(sym);
     Libraries::DiscMap::RegisterlibSceDiscMap(sym);
+    Libraries::Ulobjmgr::RegisterlibSceUlobjmgr(sym);
 }
 
 } // namespace Libraries
diff --git a/src/core/libraries/ulobjmgr/ulobjmgr.cpp b/src/core/libraries/ulobjmgr/ulobjmgr.cpp
new file mode 100644
index 000000000..cad6feda9
--- /dev/null
+++ b/src/core/libraries/ulobjmgr/ulobjmgr.cpp
@@ -0,0 +1,45 @@
+// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "common/logging/log.h"
+#include "core/libraries/error_codes.h"
+#include "core/libraries/kernel/posix_error.h"
+#include "core/libraries/libs.h"
+#include "core/libraries/ulobjmgr/ulobjmgr.h"
+
+namespace Libraries::Ulobjmgr {
+
+s32 PS4_SYSV_ABI Func_046DBA8411A2365C(u64 arg0, s32 arg1, u32* arg2) {
+    if (arg0 == 0 || arg1 == 0 || arg2 == nullptr) {
+        return POSIX_EINVAL;
+    }
+    *arg2 = 0;
+    return ORBIS_OK;
+}
+
+s32 PS4_SYSV_ABI Func_1D9F50D9CFB8054E() {
+    return ORBIS_OK;
+}
+
+s32 PS4_SYSV_ABI Func_4A67FE7D435B94F7(u32 arg0) {
+    if (arg0 >= 0x4000) {
+        return POSIX_EINVAL;
+    }
+    return ORBIS_OK;
+}
+
+s32 PS4_SYSV_ABI Func_4B07893BBB77A649(u64 arg0) {
+    if (arg0 == 0) {
+        return POSIX_EINVAL;
+    }
+    return ORBIS_OK;
+}
+
+void RegisterlibSceUlobjmgr(Core::Loader::SymbolsResolver* sym) {
+    LIB_FUNCTION("BG26hBGiNlw", "ulobjmgr", 1, "ulobjmgr", 1, 1, Func_046DBA8411A2365C);
+    LIB_FUNCTION("HZ9Q2c+4BU4", "ulobjmgr", 1, "ulobjmgr", 1, 1, Func_1D9F50D9CFB8054E);
+    LIB_FUNCTION("Smf+fUNblPc", "ulobjmgr", 1, "ulobjmgr", 1, 1, Func_4A67FE7D435B94F7);
+    LIB_FUNCTION("SweJO7t3pkk", "ulobjmgr", 1, "ulobjmgr", 1, 1, Func_4B07893BBB77A649);
+};
+
+} // namespace Libraries::Ulobjmgr
diff --git a/src/core/libraries/ulobjmgr/ulobjmgr.h b/src/core/libraries/ulobjmgr/ulobjmgr.h
new file mode 100644
index 000000000..9a1440e5c
--- /dev/null
+++ b/src/core/libraries/ulobjmgr/ulobjmgr.h
@@ -0,0 +1,14 @@
+// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "common/types.h"
+
+namespace Core::Loader {
+class SymbolsResolver;
+}
+
+namespace Libraries::Ulobjmgr {
+void RegisterlibSceUlobjmgr(Core::Loader::SymbolsResolver* sym);
+} // namespace Libraries::Ulobjmgr
\ No newline at end of file