sceKernelDebugOutText

Some homebrew use this for logging, and these logs do show up in console klogs.
I wasn't sure where the most suitable place for this function would be, so I made a separate file for these debug functions.

CMakeLists.txt

@@ -299,6 +299,8 @@ set(KERNEL_LIB src/core/libraries/kernel/sync/mutex.cpp
                src/core/libraries/kernel/threads/thread_state.h
                src/core/libraries/kernel/process.cpp
                src/core/libraries/kernel/process.h
+               src/core/libraries/kernel/debug.cpp
+               src/core/libraries/kernel/debug.h
                src/core/libraries/kernel/equeue.cpp
                src/core/libraries/kernel/equeue.h
                src/core/libraries/kernel/file_system.cpp

src/core/libraries/kernel/debug.cpp

@@ -0,0 +1,20 @@
+// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "common/assert.h"
+#include "core/libraries/kernel/file_system.h"
+#include "core/libraries/kernel/orbis_error.h"
+#include "core/libraries/libs.h"
+
+namespace Libraries::Kernel {
+
+void PS4_SYSV_ABI sceKernelDebugOutText(void* unk, char* text) {
+    sceKernelWrite(1, text, strlen(text));
+    return;
+}
+
+void RegisterDebug(Core::Loader::SymbolsResolver* sym) {
+    LIB_FUNCTION("9JYNqN6jAKI", "libkernel", 1, "libkernel", 1, 1, sceKernelDebugOutText);
+}
+
+} // namespace Libraries::Kernel

src/core/libraries/kernel/debug.h

@@ -0,0 +1,14 @@
+// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+namespace Core::Loader {
+class SymbolsResolver;
+}
+    
+namespace Libraries::Kernel {
+
+void RegisterDebug(Core::Loader::SymbolsResolver* sym);
+
+} // namespace Libraries::Kernel

src/core/libraries/kernel/kernel.cpp

@@ -12,6 +12,7 @@
 #include "common/va_ctx.h"
 #include "core/file_sys/fs.h"
 #include "core/libraries/error_codes.h"
+#include "core/libraries/kernel/debug.h"
 #include "core/libraries/kernel/equeue.h"
 #include "core/libraries/kernel/file_system.h"
 #include "core/libraries/kernel/kernel.h"
@@ -219,6 +220,7 @@ void RegisterKernel(Core::Loader::SymbolsResolver* sym) {
     Libraries::Kernel::RegisterProcess(sym);
     Libraries::Kernel::RegisterException(sym);
     Libraries::Kernel::RegisterAio(sym);
+    Libraries::Kernel::RegisterDebug(sym);
 
     LIB_OBJ("f7uOxY9mM1U", "libkernel", 1, "libkernel", 1, 1, &g_stack_chk_guard);
     LIB_FUNCTION("PfccT7qURYE", "libkernel", 1, "libkernel", 1, 1, kernel_ioctl);