316 lines
8.2 KiB
Plaintext
316 lines
8.2 KiB
Plaintext
(*
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BSD 2-Clause License
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Copyright (c) 2018, Anton Krotov
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All rights reserved.
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*)
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MODULE MSCOFF;
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IMPORT BIN, PE32, KOS, WR := WRITER, UTILS, ERRORS, LISTS, CHL := CHUNKLISTS;
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CONST
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SIZE_OF_DWORD = 4;
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(* SectionHeader.Characteristics *)
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SHC_flat = 040500020H;
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SHC_data = 0C0500040H;
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SHC_bss = 0C03000C0H;
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TYPE
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FH = PE32.IMAGE_FILE_HEADER;
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SH = PE32.IMAGE_SECTION_HEADER;
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PROCEDURE WriteReloc (File: WR.FILE; VirtualAddress, SymbolTableIndex, Type: INTEGER);
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BEGIN
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WR.Write32LE(File, VirtualAddress);
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WR.Write32LE(File, SymbolTableIndex);
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WR.Write16LE(File, Type)
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END WriteReloc;
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PROCEDURE Reloc (program: BIN.PROGRAM; File: WR.FILE);
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VAR
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reloc: BIN.RELOC;
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BEGIN
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reloc := program.rel_list.first(BIN.RELOC);
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WHILE reloc # NIL DO
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CASE reloc.opcode OF
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|BIN.RIMP, BIN.IMPTAB:
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WriteReloc(File, reloc.offset, 4, 6)
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|BIN.RBSS:
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WriteReloc(File, reloc.offset, 5, 6)
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|BIN.RDATA:
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WriteReloc(File, reloc.offset, 2, 6)
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|BIN.RCODE:
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WriteReloc(File, reloc.offset, 1, 6)
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END;
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reloc := reloc.next(BIN.RELOC)
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END;
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END Reloc;
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PROCEDURE RelocCount (program: BIN.PROGRAM): INTEGER;
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VAR
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reloc: BIN.RELOC;
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iproc: BIN.IMPRT;
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res, L: INTEGER;
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BEGIN
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res := 0;
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reloc := program.rel_list.first(BIN.RELOC);
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WHILE reloc # NIL DO
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INC(res);
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IF reloc.opcode = BIN.RIMP THEN
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L := BIN.get32le(program.code, reloc.offset);
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iproc := BIN.GetIProc(program, L);
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BIN.put32le(program.code, reloc.offset, iproc.label)
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END;
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IF reloc.opcode = BIN.RCODE THEN
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L := BIN.get32le(program.code, reloc.offset);
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BIN.put32le(program.code, reloc.offset, BIN.GetLabel(program, L))
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END;
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reloc := reloc.next(BIN.RELOC)
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END
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RETURN res
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END RelocCount;
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PROCEDURE write* (program: BIN.PROGRAM; FileName: ARRAY OF CHAR; ver: INTEGER);
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VAR
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File: WR.FILE;
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exp: BIN.EXPRT;
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n, i: INTEGER;
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szversion: PE32.NAME;
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ImportTable: CHL.INTLIST;
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ILen, LibCount, isize: INTEGER;
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ExpCount: INTEGER;
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icount, ecount, dcount, ccount: INTEGER;
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FileHeader: FH;
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flat, data, edata, idata, bss: SH;
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PROCEDURE ICount (ImportTable: CHL.INTLIST; ILen: INTEGER): INTEGER;
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VAR
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i, res: INTEGER;
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BEGIN
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res := 0;
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FOR i := 0 TO ILen - 1 DO
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IF CHL.GetInt(ImportTable, i) # 0 THEN
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INC(res)
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END
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END
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RETURN res
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END ICount;
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PROCEDURE SetNumberOfRelocations (VAR section: SH; NumberOfRelocations: INTEGER);
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BEGIN
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IF NumberOfRelocations >= 65536 THEN
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ERRORS.error1("too many relocations")
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END;
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section.NumberOfRelocations := WCHR(NumberOfRelocations)
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END SetNumberOfRelocations;
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BEGIN
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szversion := "version";
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ASSERT(LENGTH(szversion) = 7);
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KOS.Import(program, 0, ImportTable, ILen, LibCount, isize);
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ExpCount := LISTS.count(program.exp_list);
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icount := CHL.Length(program.import);
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dcount := CHL.Length(program.data);
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ccount := CHL.Length(program.code);
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ecount := CHL.Length(program.export);
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FileHeader.Machine := 014CX;
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FileHeader.NumberOfSections := 5X;
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FileHeader.TimeDateStamp := UTILS.UnixTime();
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//FileHeader.PointerToSymbolTable := 0;
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FileHeader.NumberOfSymbols := 6;
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FileHeader.SizeOfOptionalHeader := 0X;
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FileHeader.Characteristics := 0184X;
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flat.Name := ".flat";
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flat.VirtualSize := 0;
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flat.VirtualAddress := 0;
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flat.SizeOfRawData := ccount;
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flat.PointerToRawData := ORD(FileHeader.NumberOfSections) * PE32.SIZE_OF_IMAGE_SECTION_HEADER + PE32.SIZE_OF_IMAGE_FILE_HEADER;
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//flat.PointerToRelocations := 0;
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flat.PointerToLinenumbers := 0;
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SetNumberOfRelocations(flat, RelocCount(program));
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flat.NumberOfLinenumbers := 0X;
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flat.Characteristics := SHC_flat;
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data.Name := ".data";
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data.VirtualSize := 0;
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data.VirtualAddress := 0;
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data.SizeOfRawData := dcount;
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data.PointerToRawData := flat.PointerToRawData + flat.SizeOfRawData;
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data.PointerToRelocations := 0;
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data.PointerToLinenumbers := 0;
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data.NumberOfRelocations := 0X;
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data.NumberOfLinenumbers := 0X;
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data.Characteristics := SHC_data;
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edata.Name := ".edata";
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edata.VirtualSize := 0;
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edata.VirtualAddress := 0;
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edata.SizeOfRawData := ((ExpCount + 1) * 2 + 1) * SIZE_OF_DWORD + LENGTH(szversion) + 1 + ecount;
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edata.PointerToRawData := data.PointerToRawData + data.SizeOfRawData;
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//edata.PointerToRelocations := 0;
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edata.PointerToLinenumbers := 0;
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SetNumberOfRelocations(edata, ExpCount * 2 + 1);
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edata.NumberOfLinenumbers := 0X;
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edata.Characteristics := SHC_data;
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idata.Name := ".idata";
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idata.VirtualSize := 0;
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idata.VirtualAddress := 0;
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idata.SizeOfRawData := isize;
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idata.PointerToRawData := edata.PointerToRawData + edata.SizeOfRawData;
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//idata.PointerToRelocations := 0;
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idata.PointerToLinenumbers := 0;
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SetNumberOfRelocations(idata, ICount(ImportTable, ILen));
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idata.NumberOfLinenumbers := 0X;
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idata.Characteristics := SHC_data;
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bss.Name := ".bss";
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bss.VirtualSize := 0;
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bss.VirtualAddress := 0;
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bss.SizeOfRawData := program.bss;
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bss.PointerToRawData := 0;
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bss.PointerToRelocations := 0;
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bss.PointerToLinenumbers := 0;
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bss.NumberOfRelocations := 0X;
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bss.NumberOfLinenumbers := 0X;
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bss.Characteristics := SHC_bss;
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flat.PointerToRelocations := idata.PointerToRawData + idata.SizeOfRawData;
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edata.PointerToRelocations := flat.PointerToRelocations + ORD(flat.NumberOfRelocations) * 10;
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idata.PointerToRelocations := edata.PointerToRelocations + ORD(edata.NumberOfRelocations) * 10;
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FileHeader.PointerToSymbolTable := idata.PointerToRelocations + ORD(idata.NumberOfRelocations) * 10;
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File := WR.Create(FileName);
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PE32.WriteFileHeader(File, FileHeader);
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PE32.WriteSectionHeader(File, flat);
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PE32.WriteSectionHeader(File, data);
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PE32.WriteSectionHeader(File, edata);
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PE32.WriteSectionHeader(File, idata);
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PE32.WriteSectionHeader(File, bss);
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CHL.WriteToFile(File, program.code);
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CHL.WriteToFile(File, program.data);
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exp := program.exp_list.first(BIN.EXPRT);
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WHILE exp # NIL DO
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WR.Write32LE(File, exp.nameoffs + edata.SizeOfRawData - ecount);
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WR.Write32LE(File, exp.label);
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exp := exp.next(BIN.EXPRT)
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END;
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WR.Write32LE(File, ((ExpCount + 1) * 2 + 1) * SIZE_OF_DWORD);
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WR.Write32LE(File, ver);
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WR.Write32LE(File, 0);
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PE32.WriteName(File, szversion);
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CHL.WriteToFile(File, program.export);
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FOR i := 0 TO ILen - 1 DO
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WR.Write32LE(File, CHL.GetInt(ImportTable, i))
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END;
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CHL.WriteToFile(File, program.import);
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Reloc(program, File);
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n := 0;
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exp := program.exp_list.first(BIN.EXPRT);
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WHILE exp # NIL DO
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WriteReloc(File, n, 3, 6);
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INC(n, 4);
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WriteReloc(File, n, 1, 6);
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INC(n, 4);
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exp := exp.next(BIN.EXPRT)
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END;
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WriteReloc(File, n, 3, 6);
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i := 0;
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WHILE i < LibCount * 2 DO
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WriteReloc(File, i * SIZE_OF_DWORD, 4, 6);
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INC(i);
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WriteReloc(File, i * SIZE_OF_DWORD, 4, 6);
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INC(i)
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END;
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FOR i := LibCount * 2 TO ILen - 1 DO
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IF CHL.GetInt(ImportTable, i) # 0 THEN
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WriteReloc(File, i * SIZE_OF_DWORD, 4, 6)
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END
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END;
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PE32.WriteName(File, "EXPORTS");
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WriteReloc(File, 0, 3, 2);
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PE32.WriteName(File, ".flat");
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WriteReloc(File, 0, 1, 3);
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PE32.WriteName(File, ".data");
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WriteReloc(File, 0, 2, 3);
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PE32.WriteName(File, ".edata");
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WriteReloc(File, 0, 3, 3);
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PE32.WriteName(File, ".idata");
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WriteReloc(File, 0, 4, 3);
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PE32.WriteName(File, ".bss");
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WriteReloc(File, 0, 5, 3);
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WR.Write32LE(File, 4);
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WR.Close(File)
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END write;
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END MSCOFF. |