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/***********************************************************************
* Microsoft (R) 32-Bit Incremental Linker** Copyright (C) Microsoft Corp 1992-1996. All rights reserved.** File: symbol.h** File Comments:** This include file defines external symbol table data structures.************************************************************************/
#ifndef __SYMBOL_H__
#define __SYMBOL_H__
#include "memory.h"
// flags for external table
// don't modify EXTERN_DEFINED directly ... use SetDefinedExt() instead
// (so we can correctly maintain the linked list of all undefined externs).
#define EXTERN_DEFINED 0x00000001
#define EXTERN_COMMON 0x00000002
#define EXTERN_EMITTED 0x00000004
#define EXTERN_COFF_EMITTED 0x08000000 // COFF external emitted
#define EXTERN_EXP_CONST 0x00000008 // export with CONSTANT keyword (obs.)
#define EXTERN_EXP_BYNAME 0x00000008 // EXTERN_EXP_CONST not used for Mac, so:
#define EXTERN_EXP_DATA 0x00002000 // export with DATA keyword (use this)
#define EXTERN_FUZZYMATCH 0x00000010
#define EXTERN_COMDAT 0x00000020
#define EXTERN_WEAK 0x00000040
#define EXTERN_LAZY 0x00000080
#define EXTERN_IGNORE 0x00000100
#define EXTERN_FORWARDER 0x00000200
#define EXTERN_EXPORT 0x00000400
#define EXTERN_IMPLIB_ONLY 0x00000800 // specialized attribute for deflib --
// indicates that the symbol should only
// go in the import library, not the
// export table etc.
#define EXTERN_MULT_REFS 0x00001000 // more than one ref to undefined ext
// 0x00002000 taken (see above)
#define EXTERN_ALIAS 0x00004000 // alias to other extern
#define EXTERN_EXP_NONAME 0x00008000 // Don't write name to export name table
#define EXTERN_DIRTY 0x00010000 // used by ilink to indicate addr changed
#define EXTERN_NEWFUNC 0x00020000 // used by ilink to indicate a new func
#define EXTERN_NEWDATA 0x00040000 // used by ilink to indicate a new data
#define EXTERN_FUNC_FIXUP 0x00080000 // used by ilink to indicate a non-lego fixup
#define EXTERN_PRIVATE 0x00100000 // PRIVATE exports
#define EXTERN_RELINK 0x00200000 // used by ilink to indicate relink if sym becomes undef
#define EXTERN_NO_REFS 0x00400000 // used by ilink to notify refs need not be recorded
// Flags for External Table (Mac specific)
#define EXTERN_DUPCON 0x00800000
#define EXTERN_CSECTABLEB 0x01000000
#define EXTERN_CSECTABLEW 0x02000000
#define EXTERN_CSECTABLEL 0x04000000
// 0x08000000 taken (see above)
#define EXTERN_REFD 0x20000000
#define EXTERN_ADDTHUNK 0x40000000
#define EXTERN_REF16 0x80000000
#define CSECTABLE_CBEL_MASK 0x0F000000
// symbol name types
#define LONGNAME 0
#define SHORTNAME 1
// symbol access macros
#define n_name N.ShortName
#define n_zeroes N.Name.Short
#define n_nptr N.LongName[1]
#define n_offset N.Name.Long
#define IsLongName(sym) ((sym).n_zeroes == 0)
#define SzNameSymPb(sym, pb) ((sym).n_zeroes ? \
strncpy(ShortName, (char *) (sym).n_name, IMAGE_SIZEOF_SHORT_NAME) : \ (char *)((pb)+(sym).n_offset))
#define SzNameSym(sym, blk) SzNameSymPb(sym, (blk).pb)
#define SzNameSymPst(sym, pst) SzNameSym(sym, (pst)->blkStringTable)
#define SzNamePext(pext, pst) SzNameSymPst((pext)->ImageSymbol, pst)
#define CPMODS 4 // count of references (MODS) in each chunk of references
typedef struct MODS { struct MODS *pmodsNext;} MODS, *PMODS;
#define RgpmodPMODS(pmodsNext) ((MOD **)((pmodsNext)+1))
typedef struct EXTERNAL // External symbol
{ IMAGE_SYMBOL ImageSymbol; WORD ArchiveMemberIndex;
// some clients require that pcon not be invalidated immediately
// if an extern becomes undefined ...
// hence not unioned with the "Undefined" linked list.
PCON pcon; // EXTERN_DEFINED
DWORD FinalValue; // cannot union with undefined list vars since value
// is lost on an ilink when symbol added to undefined list
union { struct { // EXTERN_DEFINED
struct EXTERNAL *pextNextDefined; }; struct { // !EXTERN_DEFINED
struct EXTERNAL **ppextPrevUndefined; struct EXTERNAL *pextNextUndefined; }; }; union { // On an ilink these fields will be persistent. Even if EXTERN_DEFINED
// these fields will still have the references
PMOD pmodOnly; // !EXTERN_DEFINED, !EXTERN_MULT_REFS
PMODS pmodsFirst; // !EXTERN_DEFINED, EXTERN_MULT_REFS
}; DWORD Offset; // offset into jump table
char *szOtherName; DWORD Flags;
// NOTE: The following fields must not be moved. X86, MIPS ilink rely
// on these fields being where they are.
union { struct { // The following 3 fields are MAC specific
PSEC psecRef; // Used to build thunk table
DWORD offThunk; // Used for quick lookup of A5 offset of thunk
struct _MACDLL_FSID *pmacdll_fsid; // Used to build DLL stubs
};
struct { // The following 2 fields are used for NT PowerPC and PowerMac
SHORT ibToc; WORD ppcFlags;
union { // The following fields is used for PowerMac
DWORD glueValue;
// The following field is used for NT PowerPC
DWORD dwRestoreToc; }; }; };} EXTERNAL, *PEXTERNAL, **PPEXTERNAL;
__inline BOOL FExportProcPext(PEXTERNAL pext) { return !(pext->Flags & (EXTERN_EXP_CONST | EXTERN_EXP_DATA));}
enum EMODE // export mode as spec'd in .def file or -export option
{ emodeProcedure, emodeConstant, emodeData};
struct LEXT // list of externals
{ PEXTERNAL pext; struct LEXT *plextNext;};
typedef LEXT *PLEXT;
typedef struct LONG_STRING_LIST // Long name string list
{ DWORD Offset; struct LONG_STRING_LIST *Left; struct LONG_STRING_LIST *Right;} LONG_STRING_LIST, *PLONG_STRING_LIST;
typedef struct ST // symbol table
{ PHT pht; // underlying dynamic hash table
BLK blkStringTable; // long name string table
PLONG_STRING_LIST plslFirstLongName;// pointer to binary tree of long names.
// UNDONE: Can these be union'd
PPEXTERNAL rgpexternalByName; // ptr to symbol table sorted by name
PPEXTERNAL rgpexternalByAddr; // ptr to symbol table sorted by addr
PPEXTERNAL rgpexternalByMacAddr; // ptr to symbol table sorted by mac addr
PPEXTERNAL rgpexternalByModName; // ptr to symbol table sorted by archive member, name
PEXTERNAL pextFirstUndefined; // linked list of undefined symbols
PPEXTERNAL ppextLastUndefined; // end of list
} ST, *PST, **PPST;
struct ENM_UNDEF_EXT{// private
ENM_BASE enm_base; PEXTERNAL pextNext;// public
PEXTERNAL pext;};
struct ENM_MOD_EXT{// private
ENM_BASE enm_base; PEXTERNAL pext; PMODS pmods; DWORD ipmod;// public
PMOD pmod;};
// symbol table api
VOID InitExternalSymbolTable(PPST, DWORD, DWORD);VOID IncrInitExternalSymbolTable(PPST);VOID FreeExternalSymbolTable(PPST);VOID InitEnumerateExternals(PST);VOID TerminateEnumerateExternals(PST);DWORD Cexternal(PST);VOID FuzzyLookup(PST, PST, PLIB, BOOL);PEXTERNAL LookupExternName(PST, SHORT, const char *, PBOOL);PEXTERNAL LookupExternSz(PST, const char *, PBOOL);PEXTERNAL SearchExternSz(PST, const char *);VOID SetDefinedExt(PEXTERNAL, BOOL, PST);PEXTERNAL PexternalEnumerateNext(PST);PPEXTERNAL RgpexternalByAddr(PST);PPEXTERNAL RgpexternalByMacAddr(PST);PPEXTERNAL RgpexternalByModName(PST);PPEXTERNAL RgpexternalByName(PST);VOID AddReferenceExt(PEXTERNAL, PMOD);BOOL FPextRef(PEXTERNAL);VOID AllowInserts(PST);VOID DumpPst(PST);
VOID InitEnmUndefExt(ENM_UNDEF_EXT *, PST);BOOL FNextEnmUndefExt(ENM_UNDEF_EXT *);VOID EndEnmUndefExt(ENM_UNDEF_EXT *);
VOID InitEnmModExt(ENM_MOD_EXT *, PEXTERNAL);BOOL FNextEnmModExt(ENM_MOD_EXT *);VOID EndEnmModExt(ENM_MOD_EXT *);
#endif // __SYMBOL_H__
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