git subrepo clone https://github.com/HarbourMasters/ZAPDTR.git

subrepo:
  subdir:   "ZAPDTR"
  merged:   "a53a53ea4"
upstream:
  origin:   "https://github.com/HarbourMasters/ZAPDTR.git"
  branch:   "master"
  commit:   "a53a53ea4"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???"

ZAPDTR/ZAPD/Overlays/ZOverlay.h

@@ -0,0 +1,75 @@
+#pragma once
+
+#include "Utils/Directory.h"
+#include "ZResource.h"
+#include "elfio/elfio.hpp"
+#include "tinyxml2.h"
+
+enum class SectionType
+{
+	Text = 1,
+	Data = 2,
+	RoData = 3,
+	Bss = 4,
+	ERROR = 255
+};
+
+enum class RelocationType
+{
+	R_MIPS_32 = 2,
+	R_MIPS_26 = 4,
+	R_MIPS_HI16 = 5,
+	R_MIPS_LO16 = 6,
+};
+
+class RelocationEntry
+{
+public:
+	SectionType sectionType;
+	RelocationType relocationType;
+	int32_t offset;
+
+	RelocationEntry(SectionType nSecType, RelocationType nRelType, int32_t nOffset)
+	{
+		sectionType = nSecType;
+		relocationType = nRelType;
+		offset = nOffset;
+	}
+
+	uint32_t CalcRelocationWord()
+	{
+		uint32_t relocationWord = 0;
+
+		relocationWord |= static_cast<uint32_t>(sectionType) << 30;
+		relocationWord |= static_cast<uint32_t>(relocationType) << 24;
+		relocationWord |= offset;
+
+		return relocationWord;
+	}
+
+	const char* GetSectionName() const;
+	const char* GetRelocTypeName() const;
+};
+
+class ZOverlay
+{
+public:
+	std::string name;
+
+	ZOverlay(const std::string& nName);
+	~ZOverlay();
+	static ZOverlay* FromBuild(fs::path buildPath, fs::path cfgFolderPath);
+	std::string GetSourceOutputCode(const std::string& prefix);
+
+private:
+	std::vector<RelocationEntry*> entries;
+	std::vector<std::string> cfgLines;
+
+	ZOverlay();
+
+	static SectionType GetSectionTypeFromStr(const std::string& sectionName);
+	// static std::string GetOverlayNameFromElf(ELFIO::elfio& reader);
+
+	ELFIO::Elf_Half FindSymbolInSection(const std::string& curSymName, ELFIO::section* sectionData,
+	                                    ELFIO::elfio& reader, size_t readerId);
+};