const IMAGE_SYM_UNDEFINED … const IMAGE_SYM_ABSOLUTE … const IMAGE_SYM_DEBUG … const IMAGE_SYM_TYPE_NULL … const IMAGE_SYM_TYPE_VOID … const IMAGE_SYM_TYPE_CHAR … const IMAGE_SYM_TYPE_SHORT … const IMAGE_SYM_TYPE_INT … const IMAGE_SYM_TYPE_LONG … const IMAGE_SYM_TYPE_FLOAT … const IMAGE_SYM_TYPE_DOUBLE … const IMAGE_SYM_TYPE_STRUCT … const IMAGE_SYM_TYPE_UNION … const IMAGE_SYM_TYPE_ENUM … const IMAGE_SYM_TYPE_MOE … const IMAGE_SYM_TYPE_BYTE … const IMAGE_SYM_TYPE_WORD … const IMAGE_SYM_TYPE_UINT … const IMAGE_SYM_TYPE_DWORD … const IMAGE_SYM_TYPE_PCODE … const IMAGE_SYM_DTYPE_NULL … const IMAGE_SYM_DTYPE_POINTER … const IMAGE_SYM_DTYPE_FUNCTION … const IMAGE_SYM_DTYPE_ARRAY … const IMAGE_SYM_CLASS_END_OF_FUNCTION … const IMAGE_SYM_CLASS_NULL … const IMAGE_SYM_CLASS_AUTOMATIC … const IMAGE_SYM_CLASS_EXTERNAL … const IMAGE_SYM_CLASS_STATIC … const IMAGE_SYM_CLASS_REGISTER … const IMAGE_SYM_CLASS_EXTERNAL_DEF … const IMAGE_SYM_CLASS_LABEL … const IMAGE_SYM_CLASS_UNDEFINED_LABEL … const IMAGE_SYM_CLASS_MEMBER_OF_STRUCT … const IMAGE_SYM_CLASS_ARGUMENT … const IMAGE_SYM_CLASS_STRUCT_TAG … const IMAGE_SYM_CLASS_MEMBER_OF_UNION … const IMAGE_SYM_CLASS_UNION_TAG … const IMAGE_SYM_CLASS_TYPE_DEFINITION … const IMAGE_SYM_CLASS_UNDEFINED_STATIC … const IMAGE_SYM_CLASS_ENUM_TAG … const IMAGE_SYM_CLASS_MEMBER_OF_ENUM … const IMAGE_SYM_CLASS_REGISTER_PARAM … const IMAGE_SYM_CLASS_BIT_FIELD … const IMAGE_SYM_CLASS_FAR_EXTERNAL … const IMAGE_SYM_CLASS_BLOCK … const IMAGE_SYM_CLASS_FUNCTION … const IMAGE_SYM_CLASS_END_OF_STRUCT … const IMAGE_SYM_CLASS_FILE … const IMAGE_SYM_CLASS_SECTION … const IMAGE_SYM_CLASS_WEAK_EXTERNAL … const IMAGE_SYM_CLASS_CLR_TOKEN … const IMAGE_REL_I386_ABSOLUTE … const IMAGE_REL_I386_DIR16 … const IMAGE_REL_I386_REL16 … const IMAGE_REL_I386_DIR32 … const IMAGE_REL_I386_DIR32NB … const IMAGE_REL_I386_SEG12 … const IMAGE_REL_I386_SECTION … const IMAGE_REL_I386_SECREL … const IMAGE_REL_I386_TOKEN … const IMAGE_REL_I386_SECREL7 … const IMAGE_REL_I386_REL32 … const IMAGE_REL_AMD64_ABSOLUTE … const IMAGE_REL_AMD64_ADDR64 … const IMAGE_REL_AMD64_ADDR32 … const IMAGE_REL_AMD64_ADDR32NB … const IMAGE_REL_AMD64_REL32 … const IMAGE_REL_AMD64_REL32_1 … const IMAGE_REL_AMD64_REL32_2 … const IMAGE_REL_AMD64_REL32_3 … const IMAGE_REL_AMD64_REL32_4 … const IMAGE_REL_AMD64_REL32_5 … const IMAGE_REL_AMD64_SECTION … const IMAGE_REL_AMD64_SECREL … const IMAGE_REL_AMD64_SECREL7 … const IMAGE_REL_AMD64_TOKEN … const IMAGE_REL_AMD64_SREL32 … const IMAGE_REL_AMD64_PAIR … const IMAGE_REL_AMD64_SSPAN32 … const IMAGE_REL_ARM_ABSOLUTE … const IMAGE_REL_ARM_ADDR32 … const IMAGE_REL_ARM_ADDR32NB … const IMAGE_REL_ARM_BRANCH24 … const IMAGE_REL_ARM_BRANCH11 … const IMAGE_REL_ARM_SECTION … const IMAGE_REL_ARM_SECREL … const IMAGE_REL_ARM_MOV32 … const IMAGE_REL_THUMB_MOV32 … const IMAGE_REL_THUMB_BRANCH20 … const IMAGE_REL_THUMB_BRANCH24 … const IMAGE_REL_THUMB_BLX23 … const IMAGE_REL_ARM_PAIR … const IMAGE_REL_ARM64_ABSOLUTE … const IMAGE_REL_ARM64_ADDR32 … const IMAGE_REL_ARM64_ADDR32NB … const IMAGE_REL_ARM64_BRANCH26 … const IMAGE_REL_ARM64_PAGEBASE_REL21 … const IMAGE_REL_ARM64_REL21 … const IMAGE_REL_ARM64_PAGEOFFSET_12A … const IMAGE_REL_ARM64_PAGEOFFSET_12L … const IMAGE_REL_ARM64_SECREL … const IMAGE_REL_ARM64_SECREL_LOW12A … const IMAGE_REL_ARM64_SECREL_HIGH12A … const IMAGE_REL_ARM64_SECREL_LOW12L … const IMAGE_REL_ARM64_TOKEN … const IMAGE_REL_ARM64_SECTION … const IMAGE_REL_ARM64_ADDR64 … const IMAGE_REL_ARM64_BRANCH19 … const IMAGE_REL_ARM64_BRANCH14 … const IMAGE_REL_ARM64_REL32 … const CreateImportStubPltToken … const RedirectToDynImportGotToken … type peBiobuf … func (f *peBiobuf) ReadAt(p []byte, off int64) (int, error) { … } // makeUpdater creates a loader.SymbolBuilder if one hasn't been created previously. // We use this to lazily make SymbolBuilders as we don't always need a builder, and creating them for all symbols might be an error. func makeUpdater(l *loader.Loader, bld *loader.SymbolBuilder, s loader.Sym) *loader.SymbolBuilder { … } type peImportSymsState … var importSymsState … func createImportSymsState(l *loader.Loader, arch *sys.Arch) { … } type peLoaderState … var comdatDefinitions … type Symbols … // Load loads the PE file pn from input. // Symbols from the object file are created via the loader 'l'. func Load(l *loader.Loader, arch *sys.Arch, localSymVersion int, input *bio.Reader, pkg string, length int64, pn string) (*Symbols, error) { … } // PostProcessImports works to resolve inconsistencies with DLL import // symbols; it is needed when building with more "modern" C compilers // with internal linkage. // // Background: DLL import symbols are data (SNOPTRDATA) symbols whose // name is of the form "__imp_XXX", which contain a pointer/reference // to symbol XXX. It's possible to have import symbols for both data // symbols ("__imp__fmode") and text symbols ("__imp_CreateEventA"). // In some case import symbols are just references to some external // thing, and in other cases we see actual definitions of import // symbols when reading host objects. // // Previous versions of the linker would in most cases immediately // "forward" import symbol references, e.g. treat a references to // "__imp_XXX" a references to "XXX", however this doesn't work well // with more modern compilers, where you can sometimes see import // symbols that are defs (as opposed to external refs). // // The main actions taken below are to search for references to // SDYNIMPORT symbols in host object text/data sections and flag the // symbols for later fixup. When we see a reference to an import // symbol __imp_XYZ where XYZ corresponds to some SDYNIMPORT symbol, // we flag the symbol (via GOT setting) so that it can be redirected // to XYZ later in windynrelocsym. When we see a direct reference to // an SDYNIMPORT symbol XYZ, we also flag the symbol (via PLT setting) // to indicated that the reference will need to be redirected to a // stub. func PostProcessImports() error { … } func issehsect(arch *sys.Arch, s *pe.Section) bool { … } func issect(s *pe.COFFSymbol) bool { … } func (state *peLoaderState) readpesym(pesym *pe.COFFSymbol) (*loader.SymbolBuilder, loader.Sym, error) { … } // preprocessSymbols walks the COFF symbols for the PE file we're // reading and looks for cases where we have both a symbol definition // for "XXX" and an "__imp_XXX" symbol, recording these cases in a map // in the state struct. This information will be used in readpesym() // above to give such symbols special treatment. This function also // gathers information about COMDAT sections/symbols for later use // in readpesym(). func (state *peLoaderState) preprocessSymbols() error { … } // LookupBaseFromImport examines the symbol "s" to see if it // corresponds to an import symbol (name of the form "__imp_XYZ") and // if so, it looks up the underlying target of the import symbol and // returns it. An error is returned if the symbol is of the form // "__imp_XYZ" but no XYZ can be found. func LookupBaseFromImport(s loader.Sym, ldr *loader.Loader, arch *sys.Arch) (loader.Sym, error) { … }
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