Use printf-like format in JitRegister::Register

The API is cleaner (no more magic default parameter) and more
extensible like this.

Source/Core/Common/JitRegister.cpp

@@ -72,18 +72,17 @@ void Shutdown()
 }
 
 void Register(const void* base_address, u32 code_size,
-	const char* name, u32 original_address)
+	const char* format, ...)
 {
 #if !(defined USE_OPROFILE && USE_OPROFILE) && !defined(USE_VTUNE)
 	if (!s_perf_map_file.IsOpen())
 		return;
 #endif
 
-	std::string symbol_name;
-	if (original_address)
-		symbol_name = StringFromFormat("%s_%x", name, original_address);
-	else
-		symbol_name = name;
+	va_list args;
+	va_start(args, format);
+	std::string symbol_name = StringFromFormatV(format, args);
+	va_end(args);
 
 #if defined USE_OPROFILE && USE_OPROFILE
 	op_write_native_code(s_agent, symbol_name.data(), (u64)base_address,

Source/Core/Common/JitRegister.h

@@ -11,6 +11,6 @@ namespace JitRegister
 void Init();
 void Shutdown();
 void Register(const void* base_address, u32 code_size,
-	const char* name, u32 original_address=0);
+	const char* format, ...);
 
 }

Source/Core/Common/StringUtil.cpp

@@ -95,28 +95,30 @@ bool CharArrayFromFormatV(char* out, int outsize, const char* format, va_list ar
 std::string StringFromFormat(const char* format, ...)
 {
 	va_list args;
+	va_start(args, format);
+	std::string res = StringFromFormatV(format, args);
+	va_end(args);
+	return std::move(res);
+}
+
+std::string StringFromFormatV(const char* format, va_list args)
+{
 	char *buf = nullptr;
 #ifdef _WIN32
-	int required = 0;
-
-	va_start(args, format);
-	required = _vscprintf(format, args);
+	int required = _vscprintf(format, args);
 	buf = new char[required + 1];
 	CharArrayFromFormatV(buf, required + 1, format, args);
-	va_end(args);
 
 	std::string temp = buf;
 	delete[] buf;
 #else
-	va_start(args, format);
 	if (vasprintf(&buf, format, args) < 0)
 		ERROR_LOG(COMMON, "Unable to allocate memory for string");
-	va_end(args);
 
 	std::string temp = buf;
 	free(buf);
 #endif
-	return temp;
+	return std::move(temp);
 }
 
 // For Debugging. Read out an u8 array.

Source/Core/Common/StringUtil.h

@@ -13,6 +13,8 @@
 
 #include "Common/Common.h"
 
+std::string StringFromFormatV(const char* format, va_list args);
+
 std::string StringFromFormat(const char* format, ...)
 #if !defined _WIN32
 // On compilers that support function attributes, this gives StringFromFormat

Source/Core/Core/PowerPC/JitCommon/JitCache.cpp

@@ -144,7 +144,7 @@ using namespace Gen;
 		}
 
 		JitRegister::Register(blockCodePointers[block_num], b.codeSize,
-			"JIT_PPC", b.originalAddress);
+			"JIT_PPC_%08x", b.originalAddress);
 	}
 
 	const u8 **JitBaseBlockCache::GetCodePointers()