From 79a6464c587d29f1ae852365d6f1284c67ff7e7a Mon Sep 17 00:00:00 2001
From: georgemoralis <giorgosmrls@gmail.com>
Date: Wed, 28 Jun 2023 20:15:19 +0300
Subject: [PATCH] sample hle function loading (libc)

---
 CMakeLists.txt            |  2 +-
 src/Core/PS4/HLE/LibC.cpp | 25 +++++++++++++++++++++++++
 src/Core/PS4/HLE/LibC.h   | 10 ++++++++++
 src/Core/PS4/HLE/Libs.cpp |  3 ++-
 src/Core/PS4/Linker.cpp   |  1 +
 src/Core/PS4/Linker.h     |  3 +++
 src/main.cpp              |  4 +++-
 7 files changed, 45 insertions(+), 3 deletions(-)
 create mode 100644 src/Core/PS4/HLE/LibC.cpp
 create mode 100644 src/Core/PS4/HLE/LibC.h

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f673c228..c656aadc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -34,7 +34,7 @@ add_executable(shadps4
     src/Core/Memory.h
     src/Core/PS4/Linker.cpp
     src/Core/PS4/Linker.h
-     "src/Util/Singleton.h" "src/Util/Disassembler.cpp" "src/Util/Disassembler.h" "src/Util/StringUtil.h" "src/Core/PS4/Util/aerolib.h" "src/Core/PS4/Loader/SymbolsResolver.h" "src/Core/PS4/Loader/SymbolsResolver.cpp" "src/Core/PS4/HLE/Libs.cpp" "src/Core/PS4/HLE/Libs.h")
+     "src/Util/Singleton.h" "src/Util/Disassembler.cpp" "src/Util/Disassembler.h" "src/Util/StringUtil.h" "src/Core/PS4/Util/aerolib.h" "src/Core/PS4/Loader/SymbolsResolver.h" "src/Core/PS4/Loader/SymbolsResolver.cpp" "src/Core/PS4/HLE/Libs.cpp" "src/Core/PS4/HLE/Libs.h" "src/Core/PS4/HLE/LibC.cpp" "src/Core/PS4/HLE/LibC.h")
 
 find_package(OpenGL REQUIRED)
 
diff --git a/src/Core/PS4/HLE/LibC.cpp b/src/Core/PS4/HLE/LibC.cpp
new file mode 100644
index 00000000..73fc4d2f
--- /dev/null
+++ b/src/Core/PS4/HLE/LibC.cpp
@@ -0,0 +1,25 @@
+#include "LibC.h"
+#include "../Loader/Elf.h"
+
+namespace HLE::Libs::LibC {
+
+	static void init_env() //every game/demo should probably 
+	{
+		__debugbreak();//if we reach here it will be a great progress :D
+	}
+
+	void LibC_RegisterFunc(SymbolsResolver* sym)
+	{
+		//TODO this will be convert to macro probably once we decide how will it work and what's the best
+		SymbolRes sr {};
+		sr.name = "bzQExy189ZI";
+		sr.library = "libc";
+		sr.library_version = 1;
+		sr.module = "libc";
+		sr.module_version_major = 1;
+		sr.module_version_minor = 1;
+		sr.type = STT_FUN;
+		auto func = reinterpret_cast<u64>(init_env);
+		sym->AddSymbol(sr, func);
+	}
+};
\ No newline at end of file
diff --git a/src/Core/PS4/HLE/LibC.h b/src/Core/PS4/HLE/LibC.h
new file mode 100644
index 00000000..0f4f1726
--- /dev/null
+++ b/src/Core/PS4/HLE/LibC.h
@@ -0,0 +1,10 @@
+#pragma once
+#include "../Loader/SymbolsResolver.h"
+
+namespace HLE::Libs::LibC {
+
+	void LibC_RegisterFunc(SymbolsResolver* sym);
+	//functions
+	static void init_env();
+
+};
\ No newline at end of file
diff --git a/src/Core/PS4/HLE/Libs.cpp b/src/Core/PS4/HLE/Libs.cpp
index 2d5318f8..c4dd7f67 100644
--- a/src/Core/PS4/HLE/Libs.cpp
+++ b/src/Core/PS4/HLE/Libs.cpp
@@ -1,9 +1,10 @@
 #include "Libs.h"
+#include "LibC.h"
 
 namespace HLE::Libs {
 
 	void Init_HLE_Libs(SymbolsResolver *sym)
 	{
-
+		LibC::LibC_RegisterFunc(sym);
 	}
 }
\ No newline at end of file
diff --git a/src/Core/PS4/Linker.cpp b/src/Core/PS4/Linker.cpp
index 3cf8e904..0572d179 100644
--- a/src/Core/PS4/Linker.cpp
+++ b/src/Core/PS4/Linker.cpp
@@ -13,6 +13,7 @@ static u64 g_load_addr = SYSTEM_RESERVED + CODE_BASE_OFFSET;
 
 Linker::Linker()
 {
+	m_HLEsymbols = new SymbolsResolver;
 }
 
 Linker::~Linker()
diff --git a/src/Core/PS4/Linker.h b/src/Core/PS4/Linker.h
index f86f5205..bc7ce63b 100644
--- a/src/Core/PS4/Linker.h
+++ b/src/Core/PS4/Linker.h
@@ -109,9 +109,12 @@ public:
 	void LoadModuleToMemory(Module* m);
 	void LoadDynamicInfo(Module* m);
 	void LoadSymbols(Module* m);
+	SymbolsResolver* getHLESymbols() { return m_HLEsymbols; }
 
 private:
 	const ModuleInfo* FindModule(const Module& m, const std::string& id);
 	const LibraryInfo* FindLibrary(const Module& program, const std::string& id);
+
 	std::vector<Module*> m_modules;
+	SymbolsResolver* m_HLEsymbols = nullptr;
 };
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index 023d13e3..7a14d705 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -28,6 +28,7 @@
 #include <stdio.h>
 #include <inttypes.h>
 #include <Zydis/Zydis.h>
+#include "Core/PS4/HLE/Libs.h"
 
 // Main code
 int main(int argc, char* argv[])
@@ -35,8 +36,9 @@ int main(int argc, char* argv[])
 
 
     logging::init(true);//init logging
-    const char* const path =  argv[1]; //argument 1 is the path of self file to boot
+    const char* const path = argv[1]; //argument 1 is the path of self file to boot
     auto* linker = Singleton<Linker>::Instance();
+    HLE::Libs::Init_HLE_Libs(linker->getHLESymbols());
     auto *module =linker->LoadModule(path);//load main executable
 
 #if 0