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#pragma once
#include <cstdint>
#include <map>
#include <optional>
#include <string>
#include <vector>
namespace GC {
enum RelocationType : uint8_t {
R_PPC_NONE = 0,
R_PPC_ADDR32 = 1,
R_PPC_ADDR24 = 2,
R_PPC_ADDR16 = 3,
R_PPC_ADDR16_LO = 4,
R_PPC_ADDR16_HI = 5,
R_PPC_ADDR16_HA = 6,
R_PPC_ADDR14 = 7,
R_PPC_ADDR14_BRTAKEN = 8,
R_PPC_ADDR14_BRNTAKEN = 9,
R_PPC_REL24 = 10,
R_PPC_REL14 = 11,
R_PPC_REL14_BRTAKEN = 12,
R_PPC_REL14_BRNTAKEN = 13,
R_DOLPHIN_NOP = 201,
R_DOLPHIN_SECTION = 202,
R_DOLPHIN_END = 203,
};
struct RelSectionInfo {
uint32_t offset;
uint32_t size;
bool exec;
bool IsBss() const { return offset == 0 && size != 0; }
};
struct RelImport {
uint32_t moduleId;
uint32_t offset;
};
struct RelRelocation {
uint16_t offset;
uint8_t type;
uint8_t section;
uint32_t addend;
};
struct RelUnresolved {
uint32_t section;
uint32_t offset;
uint8_t type;
uint8_t targetSection;
uint32_t addend;
};
struct RelLinkStats {
uint32_t applied = 0;
uint32_t skippedUnplaced = 0;
uint32_t unresolvedTarget = 0;
uint32_t unknownModule = 0;
uint32_t unknownType = 0;
std::map<uint8_t, uint32_t> byType;
std::vector<RelUnresolved> unresolved;
};
class RelModule {
public:
explicit RelModule(std::vector<uint8_t> data);
static std::vector<uint8_t> Decompress(const std::vector<uint8_t>& data);
uint32_t GetId() const { return mId; }
uint32_t GetVersion() const { return mVersion; }
uint32_t GetBssSize() const { return mBssSize; }
const std::vector<RelSectionInfo>& GetSections() const { return mSections; }
const std::vector<RelImport>& GetImports() const { return mImports; }
std::vector<RelRelocation> GetRelocations(const RelImport& imp) const;
std::vector<std::string> GetSectionNames() const;
std::optional<uint32_t> FindSection(const std::string& name) const;
std::vector<std::vector<uint8_t>> GetSectionData() const;
RelLinkStats Link(const std::vector<std::optional<uint32_t>>& bases,
std::vector<std::vector<uint8_t>>& sections) const;
private:
std::vector<uint8_t> mData;
uint32_t mId;
uint32_t mVersion;
uint32_t mBssSize;
uint32_t mRelOffset;
uint32_t mImpOffset;
uint32_t mImpSize;
std::vector<RelSectionInfo> mSections;
std::vector<RelImport> mImports;
};
} // namespace GC
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