show version in options screen

sfse/CMakeLists.txt

@@ -55,6 +55,8 @@ source_group(
 source_group(
 	${PROJECT_NAME}/hooks
 	FILES
+		Hooks_Version.cpp
+		Hooks_Version.h
 )
 
 source_group(

sfse/Hooks_Version.cpp

@@ -0,0 +1,44 @@
+#include "Hooks_Version.h"
+#include "sfse_common/SafeWrite.h"
+#include "sfse_common/sfse_version.h"
+#include "sfse_common/Errors.h"
+#include "sfse_common/BranchTrampoline.h"
+#include "sfse_common/Relocation.h"
+#include "xbyak/xbyak.h"
+#include <cstring>
+
+const char * kHook_ShowVersion_FormatString =
+	"%08x v%s [SFSE " __PREPRO_TOKEN_STR__(SFSE_VERSION_INTEGER) "."
+	__PREPRO_TOKEN_STR__(SFSE_VERSION_INTEGER_MINOR) "."
+	__PREPRO_TOKEN_STR__(SFSE_VERSION_INTEGER_BETA) "]";
+RelocAddr <uintptr_t> kHook_ShowVersion_Offset(0x02079A7D);
+
+void Hooks_Version_Apply()
+{
+	// show SFSE version in menu
+	{
+		struct ShowVersion_Code: Xbyak::CodeGenerator {
+			ShowVersion_Code(void * buf) : Xbyak::CodeGenerator(4096, buf)
+			{
+				Xbyak::Label retnLabel;
+				Xbyak::Label dataLabel;
+
+				mov(rdx, ptr[rip + dataLabel]);
+				jmp(ptr[rip + retnLabel]);
+
+				L(retnLabel);
+				dq(kHook_ShowVersion_Offset.getUIntPtr() + 0x7);
+
+				L(dataLabel);
+				dq(uintptr_t(kHook_ShowVersion_FormatString));
+			}
+		};
+
+		void * codeBuf = g_localTrampoline.startAlloc();
+		ShowVersion_Code code(codeBuf);
+		g_localTrampoline.endAlloc(code.getCurr());
+
+		g_branchTrampoline.write6Branch(kHook_ShowVersion_Offset.getUIntPtr(), uintptr_t(code.getCode()));
+		safeWrite8(kHook_ShowVersion_Offset.getUIntPtr() + 6, 0x90);
+	}
+}

sfse/Hooks_Version.h

@@ -0,0 +1,3 @@
+#pragma once
+
+void Hooks_Version_Apply();

sfse/sfse.cpp

@@ -8,6 +8,8 @@
 #include "sfse_common/BranchTrampoline.h"
 #include "PluginManager.h"
 
+#include "Hooks_Version.h"
+
 HINSTANCE g_moduleHandle = nullptr;
 
 void SFSE_Preinit();
@@ -136,6 +138,8 @@ void SFSE_Initialize()
 	g_pluginManager.installPlugins(PluginManager::kPhase_Preload);
 	g_pluginManager.loadComplete();
 
+	Hooks_Version_Apply();
+
 	FlushInstructionCache(GetCurrentProcess(), NULL, 0);
 
 	_MESSAGE("init complete");