EnvironmentLoader/source/ElfUtils.h

#pragma once

#include <cstdint>
#include <cstdio>
#include "common/relocation_defines.h"
#include <memory>
#include <vector>
#include "module/RelocationData.h"


#ifdef __cplusplus
extern "C" {
#endif


int32_t LoadFileToMem(const char *relativefilepath, char **fileOut, uint32_t *sizeOut);
uint32_t load_loader_elf_from_sd(unsigned char *baseAddress, const char *relativePath);
uint32_t load_loader_elf(unsigned char *baseAddress, char *elf_data, uint32_t fileSize);

#define R_PPC_NONE              0
#define R_PPC_ADDR32            1
#define R_PPC_ADDR16_LO         4
#define R_PPC_ADDR16_HI         5
#define R_PPC_ADDR16_HA         6
#define R_PPC_REL24             10
#define R_PPC_REL14             11
#define R_PPC_DTPMOD32          68
#define R_PPC_DTPREL32          78
#define R_PPC_EMB_SDA21         109
#define R_PPC_EMB_RELSDA        116
#define R_PPC_DIAB_SDA21_LO     180
#define R_PPC_DIAB_SDA21_HI     181
#define R_PPC_DIAB_SDA21_HA     182
#define R_PPC_DIAB_RELSDA_LO    183
#define R_PPC_DIAB_RELSDA_HI    184
#define R_PPC_DIAB_RELSDA_HA    185
#define R_PPC_GHS_REL16_HA      251
#define R_PPC_GHS_REL16_HI      252
#define R_PPC_GHS_REL16_LO      253

// Masks for manipulating Power PC relocation targets
#define PPC_WORD32              0xFFFFFFFF
#define PPC_WORD30              0xFFFFFFFC
#define PPC_LOW24               0x03FFFFFC
#define PPC_LOW14               0x0020FFFC
#define PPC_HALF16              0xFFFF

#ifdef __cplusplus
}
#endif

class ElfUtils {

public:
    static bool elfLinkOne(char type, size_t offset, int32_t addend, uint32_t destination, uint32_t symbol_addr, relocation_trampolin_entry_t *trampolin_data, uint32_t trampolin_data_length,
                           RelocationType reloc_type);


    static bool doRelocation(std::vector<std::shared_ptr<RelocationData>> &relocData, relocation_trampolin_entry_t *tramp_data, uint32_t tramp_length);
};