101 lines
4.7 KiB
C
101 lines
4.7 KiB
C
#ifndef __ELF_LOADER_H_
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#define __ELF_LOADER_H_
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#include <stdio.h>
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#include <elf.h>
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typedef struct elfheader_s elfheader_t;
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typedef struct lib_s lib_t;
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typedef struct library_s library_t;
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typedef struct kh_mapsymbols_s kh_mapsymbols_t;
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typedef struct box64context_s box64context_t;
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typedef struct x64emu_s x64emu_t;
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typedef struct needed_libs_s needed_libs_t;
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typedef struct kh_defaultversion_s kh_defaultversion_t;
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#ifdef DYNAREC
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typedef struct dynablock_s dynablock_t;
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#endif
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// Define for handling .relr.dyn section (since glibc 2.36)
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// See Also https://lists.gnu.org/archive/html/info-gnu/2022-08/msg00000.html
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//
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// if glibc 2.36 is widely used in the future, this part can be removed
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#ifndef DT_RELR
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// Copy from (glibc 2.36) elf.h
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#define SHT_RELR 19 /* RELR relative relocations */
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typedef Elf32_Word Elf32_Relr;
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typedef Elf64_Xword Elf64_Relr;
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#define DT_RELRSZ 35 /* Total size of RELR relative relocations */
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#define DT_RELR 36 /* Address of RELR relative relocations */
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#define DT_RELRENT 37 /* Size of one RELR relative relocaction */
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#endif // DT_RELR
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// Open an elfheader. Transfert control of f to elfheader also!
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elfheader_t* LoadAndCheckElfHeader(FILE* f, const char* name, int exec); // exec : 0 = lib, 1 = exec
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void FreeElfHeader(elfheader_t** head);
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const char* ElfName(elfheader_t* head);
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const char* ElfPath(elfheader_t* head);
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void ElfAttachLib(elfheader_t* head, library_t* lib);
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// return 0 if OK
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int CalcLoadAddr(elfheader_t* head);
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int AllocLoadElfMemory(box64context_t* context, elfheader_t* head, int mainbin);
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void FreeElfMemory(elfheader_t* head);
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int isElfHasNeededVer(elfheader_t* head, const char* libname, elfheader_t* verneeded);
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void GrabX64CopyMainElfReloc(elfheader_t* head);
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int RelocateElf(lib_t *maplib, lib_t* local_maplib, int bindnow, int deepbind, elfheader_t* head);
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int RelocateElfPlt(lib_t *maplib, lib_t* local_maplib, int bindnow, int deepbind, elfheader_t* head);
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void CalcStack(elfheader_t* h, uint64_t* stacksz, size_t* stackalign);
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uintptr_t GetEntryPoint(lib_t* maplib, elfheader_t* h);
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uintptr_t GetLastByte(elfheader_t* h);
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void AddSymbols(lib_t *maplib, elfheader_t* h);
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int LoadNeededLibs(elfheader_t* h, lib_t *maplib, int local, int bindnow, int deepbind, box64context_t *box64, x64emu_t* emu);
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uintptr_t GetElfInit(elfheader_t* h);
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uintptr_t GetElfFini(elfheader_t* h);
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void RefreshElfTLS(elfheader_t* h);
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void RunElfInit(elfheader_t* h, x64emu_t *emu);
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void RunElfFini(elfheader_t* h, x64emu_t *emu);
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void RunDeferredElfInit(x64emu_t *emu);
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void MarkElfInitDone(elfheader_t* h);
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void* GetBaseAddress(elfheader_t* h);
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void* GetElfDelta(elfheader_t* h);
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uint32_t GetBaseSize(elfheader_t* h);
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int IsAddressInElfSpace(const elfheader_t* h, uintptr_t addr);
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elfheader_t* FindElfAddress(box64context_t *context, uintptr_t addr);
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const char* FindNearestSymbolName(elfheader_t* h, void* p, uintptr_t* start, uint64_t* sz);
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int32_t GetTLSBase(elfheader_t* h);
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uint32_t GetTLSSize(elfheader_t* h);
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void* GetTLSPointer(box64context_t* context, elfheader_t* h);
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void* GetDTatOffset(box64context_t* context, unsigned long int index, unsigned long int offset);
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#ifdef DYNAREC
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dynablock_t* GetDynablocksFromAddress(box64context_t *context, uintptr_t addr);
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#endif
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void ResetSpecialCaseMainElf(elfheader_t* h);
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void CreateMemorymapFile(box64context_t* context, int fd);
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void* GetDynamicSection(elfheader_t* h);
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int ElfCheckIfUseTCMallocMinimal(elfheader_t* h); // return 1 if tcmalloc is used
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const char* GetSymbolVersion(elfheader_t* h, int version);
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const char* GetParentSymbolVersion(elfheader_t* h, int index);
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const char* VersionedName(const char* name, int ver, const char* vername);
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int SameVersionedSymbol(const char* name1, int ver1, const char* vername1, int veropt1, const char* name2, int ver2, const char* vername2, int veropt2);
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int GetVersionIndice(elfheader_t* h, const char* vername);
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int GetNeededVersionCnt(elfheader_t* h, const char* libname);
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const char* GetNeededVersionString(elfheader_t* h, const char* libname, int idx);
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int GetNeededVersionForLib(elfheader_t* h, const char* libname, const char* ver);
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void* ElfGetLocalSymbolStartEnd(elfheader_t* head, uintptr_t *offs, uintptr_t *sz, const char* symname, int* ver, const char** vername, int local, int* veropt);
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void* ElfGetGlobalSymbolStartEnd(elfheader_t* head, uintptr_t *offs, uintptr_t *sz, const char* symname, int* ver, const char** vername, int local, int* veropt);
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void* ElfGetWeakSymbolStartEnd(elfheader_t* head, uintptr_t *offs, uintptr_t *sz, const char* symname, int* ver, const char** vername, int local, int* veropt);
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int ElfGetSymTabStartEnd(elfheader_t* head, uintptr_t *offs, uintptr_t *end, const char* symname);
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void* GetNativeSymbolUnversioned(void* lib, const char* name);
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void AddMainElfToLinkmap(elfheader_t* lib);
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#endif //__ELF_LOADER_H_
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