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Linker.cp
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Linker.cp
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MODULE DevLinker;
(**
project = "BlackBox"
organization = "www.oberon.ch"
contributors = "Oberon microsystems"
version = "System/Rsrc/About"
copyright = "System/Rsrc/About"
license = "Docu/BB-License"
changes = ""
issues = ""
**)
IMPORT
Kernel, Files, Dates, Dialog, Strings,
TextModels, TextViews, TextMappers,
Log := StdLog, DevCommanders;
CONST
NewRecFP = 4E27A847H;
NewArrFP = 76068C78H;
ImageBase = 00400000H;
ObjAlign = 1000H;
FileAlign = 200H;
HeaderSize = 400H;
FixLen = 30000;
OFdir = "Code";
SYSdir = "System";
RsrcDir = "Rsrc";
WinDir = "Win";
(* meta interface consts *)
mConst = 1; mTyp = 2; mVar = 3; mProc = 4; mField = 5;
mInternal = 1; mReadonly = 2; mExported = 4;
(* fixup types *)
absolute = 100; relative = 101; copy = 102; table = 103; tableend = 104;
(* mod desc fields *)
modOpts = 4; modRefcnt = 8; modTerm = 40; modNames = 84; modImports = 92; modExports = 96;
TYPE
Name = ARRAY 40 OF SHORTCHAR;
Export = POINTER TO RECORD
next: Export;
name: Name;
adr: INTEGER
END;
Resource = POINTER TO RECORD
next, local: Resource;
typ, id, lid, size, pos, x, y: INTEGER;
opts: SET;
file: Files.File;
name: Files.Name
END;
Module = POINTER TO RECORD
next: Module;
name: Files.Name;
file: Files.File;
hs, ms, ds, cs, vs, ni, ma, ca, va: INTEGER;
dll, intf: BOOLEAN;
exp: Export;
imp: POINTER TO ARRAY OF Module;
data: POINTER TO ARRAY OF BYTE;
END;
VAR
W: TextMappers.Formatter;
Out: Files.File;
R: Files.Reader;
Ro: Files.Writer;
error, isDll, isStatic, comLine: BOOLEAN;
modList, kernel, main, last, impg, impd: Module;
numMod, lastTerm: INTEGER;
resList: Resource;
numType, resHSize: INTEGER;
numId: ARRAY 32 OF INTEGER;
rsrcName: ARRAY 16 OF CHAR; (* name of resource file *)
firstExp, lastExp: Export;
entryPos, isPos, fixPos, himpPos, hexpPos, hrsrcPos, termPos: INTEGER;
codePos, dataPos, conPos, rsrcPos, impPos, expPos, relPos: INTEGER;
CodeSize, DataSize, ConSize, RsrcSize, ImpSize, ImpHSize, ExpSize, RelocSize, DllSize: INTEGER;
CodeRva, DataRva, ConRva, RsrcRva, ImpRva, ExpRva, RelocRva, ImagesSize: INTEGER;
CodeBase, DataBase, ConBase, maxCode, numImp, numExp, noffixup, timeStamp: INTEGER;
newRec, newArr: Name;
fixups: POINTER TO ARRAY OF INTEGER;
code: POINTER TO ARRAY OF BYTE;
atab: POINTER TO ARRAY OF INTEGER;
ntab: POINTER TO ARRAY OF SHORTCHAR;
PROCEDURE TimeStamp (): INTEGER; (* seconds since 1.1.1970 00:00:00 *)
VAR a: INTEGER; t: Dates.Time; d: Dates.Date;
BEGIN
Dates.GetTime(t); Dates.GetDate(d);
a := 12 * (d.year - 70) + d.month - 3;
a := a DIV 12 * 1461 DIV 4 + (a MOD 12 * 153 + 2) DIV 5 + d.day + 59;
RETURN ((a * 24 + t.hour) * 60 + t.minute) * 60 + t.second;
END TimeStamp;
PROCEDURE ThisFile (modname: ARRAY OF CHAR): Files.File;
VAR dir, name: Files.Name; loc: Files.Locator; f: Files.File;
BEGIN
Kernel.SplitName(modname, dir, name);
Kernel.MakeFileName(name, Kernel.objType);
loc := Files.dir.This(dir); loc := loc.This(OFdir);
f := Files.dir.Old(loc, name, TRUE);
IF (f = NIL) & (dir = "") THEN
loc := Files.dir.This(SYSdir); loc := loc.This(OFdir);
f := Files.dir.Old(loc, name, TRUE)
END;
RETURN f
END ThisFile;
PROCEDURE ThisResFile (VAR name: Files.Name): Files.File;
VAR loc: Files.Locator; f: Files.File;
BEGIN
f := Files.dir.Old(Files.dir.This(RsrcDir), name, TRUE);
IF f = NIL THEN
loc := Files.dir.This(WinDir); loc := loc.This(RsrcDir);
f := Files.dir.Old(loc, name, TRUE);
IF f = NIL THEN
f := Files.dir.Old(Files.dir.This(""), name, TRUE)
END
END;
RETURN f
END ThisResFile;
PROCEDURE Read2 (VAR x: INTEGER);
VAR b: BYTE;
BEGIN
R.ReadByte(b); x := b MOD 256;
R.ReadByte(b); x := x + 100H * (b MOD 256)
END Read2;
PROCEDURE Read4 (VAR x: INTEGER);
VAR b: BYTE;
BEGIN
R.ReadByte(b); x := b MOD 256;
R.ReadByte(b); x := x + 100H * (b MOD 256);
R.ReadByte(b); x := x + 10000H * (b MOD 256);
R.ReadByte(b); x := x + 1000000H * b
END Read4;
PROCEDURE ReadName (VAR name: ARRAY OF SHORTCHAR);
VAR i: INTEGER; b: BYTE;
BEGIN i := 0;
REPEAT
R.ReadByte(b); name[i] := SHORT(CHR(b)); INC(i)
UNTIL b = 0
END ReadName;
PROCEDURE RNum (VAR i: INTEGER);
VAR b: BYTE; s, y: INTEGER;
BEGIN
s := 0; y := 0; R.ReadByte(b);
WHILE b < 0 DO INC(y, ASH(b + 128, s)); INC(s, 7); R.ReadByte(b) END;
i := ASH((b + 64) MOD 128 - 64, s) + y
END RNum;
PROCEDURE WriteCh (ch: SHORTCHAR);
BEGIN
Ro.WriteByte(SHORT(ORD(ch)))
END WriteCh;
PROCEDURE Write2 (x: INTEGER);
BEGIN
Ro.WriteByte(SHORT(SHORT(x MOD 256))); x := x DIV 256;
Ro.WriteByte(SHORT(SHORT(x MOD 256)))
END Write2;
PROCEDURE Write4 (x: INTEGER);
BEGIN
Ro.WriteByte(SHORT(SHORT(x MOD 256))); x := x DIV 256;
Ro.WriteByte(SHORT(SHORT(x MOD 256))); x := x DIV 256;
Ro.WriteByte(SHORT(SHORT(x MOD 256))); x := x DIV 256;
Ro.WriteByte(SHORT(SHORT(x MOD 256)))
END Write4;
PROCEDURE WriteName (s: ARRAY OF SHORTCHAR; len: SHORTINT);
VAR i: SHORTINT;
BEGIN i := 0;
WHILE s[i] # 0X DO Ro.WriteByte(SHORT(ORD(s[i]))); INC(i) END;
WHILE i < len DO Ro.WriteByte(0); INC(i) END
END WriteName;
PROCEDURE Reloc (a: INTEGER);
VAR p: POINTER TO ARRAY OF INTEGER; i: INTEGER;
BEGIN
IF noffixup >= LEN(fixups) THEN
NEW(p, 2 * LEN(fixups));
i := 0; WHILE i < LEN(fixups) DO p[i] := fixups[i]; INC(i) END;
fixups := p
END;
fixups[noffixup] := a; INC(noffixup)
(*
ELSE
IF ~error THEN W.WriteSString(" too many fixups") END;
error := TRUE
END
*)
END Reloc;
PROCEDURE Put (mod: Module; a, x: INTEGER);
BEGIN
mod.data[a] := SHORT(SHORT(x)); INC(a); x := x DIV 256;
mod.data[a] := SHORT(SHORT(x)); INC(a); x := x DIV 256;
mod.data[a] := SHORT(SHORT(x)); INC(a); x := x DIV 256;
mod.data[a] := SHORT(SHORT(x))
END Put;
PROCEDURE Get (mod: Module; a: INTEGER; VAR x: INTEGER);
BEGIN
x := ((mod.data[a + 3] * 256 +
(mod.data[a + 2] MOD 256)) * 256 +
(mod.data[a + 1] MOD 256)) * 256 +
(mod.data[a] MOD 256)
END Get;
PROCEDURE GenName (VAR from, to: ARRAY OF SHORTCHAR; ext: ARRAY OF SHORTCHAR);
VAR i, j: INTEGER;
BEGIN
i := 0;
WHILE from[i] # 0X DO to[i] := from[i]; INC(i) END;
IF ext # "" THEN
to[i] := "."; INC(i); j := 0;
WHILE ext[j] # 0X DO to[i] := ext[j]; INC(i); INC(j) END
END;
to[i] := 0X
END GenName;
PROCEDURE Fixup0 (link, adr: INTEGER);
VAR offset, linkadr, t, n, x: INTEGER;
BEGIN
WHILE link # 0 DO
RNum(offset);
WHILE link # 0 DO
IF link > 0 THEN
n := (code[link] MOD 256) + (code[link+1] MOD 256) * 256 + code[link+2] * 65536;
t := code[link+3]; linkadr := CodeBase + impg.ca + link
ELSE
n := (impg.data[-link] MOD 256) + (impg.data[-link+1] MOD 256) * 256 + impg.data[-link+2] * 65536;
t := impg.data[-link+3]; linkadr := ConBase + impg.ma - link
END;
IF t = absolute THEN x := adr + offset
ELSIF t = relative THEN x := adr + offset - linkadr - 4
ELSIF t = copy THEN Get(impd, adr + offset - ConBase - impd.ma, x)
ELSIF t = table THEN x := adr + n; n := link + 4
ELSIF t = tableend THEN x := adr + n; n := 0
ELSE HALT(99)
END;
IF link > 0 THEN
code[link] := SHORT(SHORT(x));
code[link+1] := SHORT(SHORT(x DIV 100H));
code[link+2] := SHORT(SHORT(x DIV 10000H));
code[link+3] := SHORT(SHORT(x DIV 1000000H))
ELSE
link := -link;
impg.data[link] := SHORT(SHORT(x));
impg.data[link+1] := SHORT(SHORT(x DIV 100H));
impg.data[link+2] := SHORT(SHORT(x DIV 10000H));
impg.data[link+3] := SHORT(SHORT(x DIV 1000000H))
END;
IF (t # relative) & ((t # copy) OR (x DIV 65536 # 0)) THEN Reloc(linkadr) END;
link := n
END;
RNum(link)
END
END Fixup0;
PROCEDURE Fixup (adr: INTEGER);
VAR link: INTEGER;
BEGIN
RNum(link); Fixup0(link, adr)
END Fixup;
PROCEDURE CheckDllImports (mod: Module);
VAR i, x, y: INTEGER; name: Name; imp: Module; exp: Export;
PROCEDURE SkipLink;
VAR a: INTEGER;
BEGIN
RNum(a);
WHILE a # 0 DO RNum(a); RNum(a) END
END SkipLink;
BEGIN
R := mod.file.NewReader(R);
R.SetPos(mod.hs + mod.ms + mod.ds + mod.cs);
SkipLink; SkipLink; SkipLink; SkipLink; SkipLink; SkipLink; i := 0;
WHILE i < mod.ni DO
imp := mod.imp[i];
IF imp # NIL THEN
RNum(x);
WHILE x # 0 DO
ReadName(name); RNum(y);
IF x = mVar THEN SkipLink;
IF imp.dll THEN
W.WriteString("variable (");
W.WriteString(imp.name); W.WriteChar(".");
W.WriteSString(name);
W.WriteString(") imported from DLL in ");
W.WriteString(mod.name);
W.WriteLn; Log.text.Append(Log.buf); error := TRUE;
RETURN
END
ELSIF x = mTyp THEN RNum(y);
IF imp.dll THEN
RNum(y);
IF y # 0 THEN
W.WriteString("type descriptor (");
W.WriteString(imp.name); W.WriteChar(".");
W.WriteSString(name);
W.WriteString(") imported from DLL in ");
W.WriteString(mod.name);
W.WriteLn; Log.text.Append(Log.buf); error := TRUE;
RETURN
END
ELSE SkipLink
END
ELSIF x = mProc THEN
IF imp.dll THEN
SkipLink; exp := imp.exp;
WHILE (exp # NIL) & (exp.name # name) DO exp := exp.next END;
IF exp = NIL THEN
NEW(exp); exp.name := name$;
exp.next := imp.exp; imp.exp := exp; INC(DllSize, 6)
END
END
END;
RNum(x)
END
END;
INC(i)
END
END CheckDllImports;
PROCEDURE ReadHeaders;
VAR mod, im, t: Module; x, i: INTEGER; impdll: BOOLEAN; exp: Export; name: Name;
BEGIN
mod := modList; modList := NIL; numMod := 0;
WHILE mod # NIL DO (* reverse mod list & count modules *)
IF ~mod.dll THEN INC(numMod) END;
t := mod; mod := t.next; t.next := modList; modList := t
END;
IF isStatic THEN
IF isDll THEN
(* push ebx; cmp [12, esp], 1; jne L1; mov ebx, modlist; { call body; } jp L2 *)
(* L1: cmp [12, esp], 0; jne L2; { call term; } *)
(* L2: pop ebx; mov aex,1; ret 12 *)
CodeSize := 42 + 10 * numMod
ELSE
(* push ebx; push ebx; push ebx; mov ebx, modlist; { call body; } { call term; } *)
(* pop ebx; pop ebx; pop ebx; ret *)
CodeSize := 12 + 10 * numMod
END
ELSE
IF isDll THEN
(* push ebx; cmp [12, esp], 1; jne L1; mov ebx, modlist; call main; jp L2 *)
(* L1: cmp [12, esp], 0; jne L2; call mainTerm; *)
(* L2: pop ebx; mov aex,1; ret 12 *)
CodeSize := 41
ELSE
(* mov ebx, modlist; jmp main *)
CodeSize := 10
END
END;
(*
IF isDll THEN
CodeSize := 24 (* push ebx, esi, edi; mov bx, modlist; call main; pop edi, esi, ebx; mov aex,1; ret 12 *)
ELSE
CodeSize := 10 (* mov bx, modlist; jmp main *)
END
*)
DataSize := 0; ConSize := 0;
ImpSize := 0; ImpHSize := 0; ExpSize := 0;
RelocSize := 0; DllSize := 0; noffixup := 0; maxCode := 0; numImp := 0; numExp := 0;
mod := modList;
WHILE mod # NIL DO
IF ~mod.dll THEN
mod.file := ThisFile(mod.name);
IF mod.file # NIL THEN
R := mod.file.NewReader(R); R.SetPos(0); Read4(x);
IF x = 6F4F4346H THEN
Read4(x);
Read4(mod.hs); Read4(mod.ms); Read4(mod.ds); Read4(mod.cs);
Read4(mod.vs); RNum(mod.ni); ReadName(name); impdll := FALSE;
IF mod.ni > 0 THEN
NEW(mod.imp, mod.ni); x := 0;
WHILE x < mod.ni DO
ReadName(name);
IF name = "$$" THEN
IF (mod # kernel) & (kernel # NIL) THEN
mod.imp[x] := kernel
ELSE
W.WriteSString("no kernel"); W.WriteLn;
Log.text.Append(Log.buf); error := TRUE
END
ELSIF name[0] = "$" THEN
i := 1;
WHILE name[i] # 0X DO name[i-1] := name[i]; INC(i) END;
name[i-1] := 0X; impdll := TRUE; im := modList;
WHILE (im # mod) & (im.name # name) DO im := im.next END;
IF (im = NIL) OR ~im.dll THEN
NEW(im); im.next := modList; modList := im;
im.name := name$;
im.dll := TRUE
END;
mod.imp[x] := im;
ELSE
im := modList;
WHILE (im # mod) & (im.name # name) DO im := im.next END;
IF im # mod THEN
mod.imp[x] := im;
ELSE
W.WriteSString(name);
W.WriteString(" not present (imported in ");
W.WriteString(mod.name); W.WriteChar(")");
W.WriteLn; Log.text.Append(Log.buf); error := TRUE
END
END;
INC(x)
END
END;
IF impdll & ~error THEN CheckDllImports(mod) END;
mod.ma := ConSize; INC(ConSize, mod.ms + mod.ds);
mod.va := DataSize; INC(DataSize, mod.vs);
mod.ca := CodeSize; INC(CodeSize, mod.cs);
IF mod.cs > maxCode THEN maxCode := mod.cs END
ELSE
W.WriteString(mod.name); W.WriteString(": wrong file type");
W.WriteLn; Log.text.Append(Log.buf); error := TRUE
END;
mod.file.Close; mod.file := NIL
ELSE
W.WriteString(mod.name); W.WriteString(" not found");
W.WriteLn; Log.text.Append(Log.buf); error := TRUE
END;
last := mod
END;
mod := mod.next
END;
IF ~isStatic & (main = NIL) THEN
W.WriteSString("no main module specified"); W.WriteLn;
Log.text.Append(Log.buf); error := TRUE
END;
(* calculate rva's *)
IF DataSize = 0 THEN DataSize := 1 END;
CodeRva := ObjAlign;
DataRva := CodeRva + (CodeSize + DllSize + (ObjAlign - 1)) DIV ObjAlign * ObjAlign;
ConRva := DataRva + (DataSize + (ObjAlign - 1)) DIV ObjAlign * ObjAlign;
RsrcRva := ConRva + (ConSize + (ObjAlign - 1)) DIV ObjAlign * ObjAlign;
CodeBase := ImageBase + CodeRva;
DataBase := ImageBase + DataRva;
ConBase := ImageBase + ConRva;
(* write dll export adresses *)
mod := modList; x := 0;
WHILE mod # NIL DO
IF mod.dll THEN
exp := mod.exp; INC(ImpSize, 20);
WHILE exp # NIL DO exp.adr := x; INC(x, 6); exp := exp.next END
END;
mod := mod.next
END;
ASSERT(x = DllSize); INC(ImpSize, 20); (* sentinel *)
END ReadHeaders;
PROCEDURE MenuSize (r: Resource): INTEGER;
VAR s, i: INTEGER;
BEGIN
s := 0;
WHILE r # NIL DO
INC(s, 2);
IF r.local = NIL THEN INC(s, 2) END;
i := 0; WHILE r.name[i] # 0X DO INC(s, 2); INC(i) END;
INC(s, 2);
s := s + MenuSize(r.local);
r := r.next
END;
RETURN s
END MenuSize;
PROCEDURE PrepResources;
VAR res, r, s: Resource; n, i, j, t, x: INTEGER; loc: Files.Locator;
BEGIN
r := resList;
WHILE r # NIL DO
IF r.lid = 0 THEN r.lid := 1033 END;
IF r.name = "MENU" THEN
r.typ := 4; r.size := 4 + MenuSize(r.local);
ELSIF r.name = "ACCELERATOR" THEN
r.typ := 9; r.size := 0; s := r.local;
WHILE s # NIL DO INC(r.size, 8); s := s.next END;
ELSE
r.file := ThisResFile(r.name);
IF r.file # NIL THEN
IF r.typ = -1 THEN (* typelib *)
r.typ := 0; r.size := r.file.Length(); r.pos := 0; rsrcName := "TYPELIB"
ELSE
R := r.file.NewReader(R); R.SetPos(0); Read2(n);
IF n = 4D42H THEN (* bitmap *)
Read4(n); r.typ := 2; r.size := n - 14; r.pos := 14;
ELSE
Read2(x);
IF x = 1 THEN (* icon *)
Read2(n); r.typ := 14; r.size := 6 + 14 * n; r.pos := 0; i := 0;
WHILE i < n DO
NEW(s); s.typ := 3; s.id := 10 * r.id + i; s.lid := r.lid; s.name := r.name$;
Read4(x); Read4(x); Read4(s.size); Read2(s.pos); Read2(x);
s.next := resList; resList := s;
INC(i)
END
ELSIF x = 2 THEN (* cursor *)
Read2(n); r.typ := 12; r.size := 6 + 14 * n; r.pos := 0; i := 0;
WHILE i < n DO
NEW(s); s.typ := 1; s.id := 10 * r.id + i; s.lid := r.lid; s.name := r.name$;
Read4(x); Read2(s.x); Read2(s.y); Read4(s.size); INC(s.size, 4); Read2(s.pos); Read2(x);
s.next := resList; resList := s;
INC(i)
END
ELSE
Read4(n);
IF (x = 0) & (n = 20H) THEN (* resource file *)
Read4(n); Read4(n); Read4(n); Read4(n); Read4(n); Read4(n); (* 32 bit marker *)
Read4(r.size); Read4(n); Read2(i);
IF i = 0FFFFH THEN
Read2(j);
IF (j >= 4) & ((j <= 11) OR (j = 16)) THEN
r.typ := j; r.pos := n + 32;
ELSE
W.WriteString(r.name); W.WriteString(": invalid type"); W.WriteLn;
Log.text.Append(Log.buf); error := TRUE
END
ELSE
j := 0;
WHILE i # 0 DO rsrcName[j] := CHR(i); INC(j); Read2(i) END;
rsrcName[j] := 0X;
r.typ := 0; r.pos := n + 32
END
ELSE
W.WriteString(r.name); W.WriteString(": unknown type"); W.WriteLn;
Log.text.Append(Log.buf); error := TRUE
END
END
END
END;
r.file.Close; r.file := NIL
ELSE
W.WriteString(r.name); W.WriteString(" not found"); W.WriteLn;
Log.text.Append(Log.buf); error := TRUE
END
END;
r := r.next
END;
res := resList; resList := NIL; (* sort resources *)
WHILE res # NIL DO
r := res; res := res.next;
IF (resList = NIL) OR (r.typ < resList.typ) OR (r.typ = resList.typ) & ((r.id < resList.id) OR (r.id = resList.id) & (r.lid < resList.lid))
THEN
r.next := resList; resList := r
ELSE
s := resList;
WHILE (s.next # NIL) & (r.typ >= s.next.typ)
& ((r.typ # s.next.typ) OR (r.id >= s.next.id) & ((r.id # s.next.id) OR (r.lid >= s.next.lid))) DO s := s.next END;
r.next := s.next; s.next := r
END
END;
r := resList; numType := 0; resHSize := 16; t := 0; n := 0; (* get resource size *)
WHILE t < LEN(numId) DO numId[t] := 0; INC(t) END;
WHILE r # NIL DO
INC(numType); INC(resHSize, 24); t := r.typ;
WHILE (r # NIL) & (r.typ = t) DO
INC(numId[t]); INC(resHSize, 24); i := r.id;
WHILE (r # NIL) & (r.typ = t) & (r.id = i) DO
INC(resHSize, 24); INC(n, (r.size + 3) DIV 4 * 4); r := r.next
END
END
END;
IF numId[0] > 0 THEN INC(n, (LEN(rsrcName$) + 1) * 2) END;
RsrcSize := resHSize + n;
ImpRva := RsrcRva + (RsrcSize + (ObjAlign - 1)) DIV ObjAlign * ObjAlign
END PrepResources;
PROCEDURE WriteHeader(VAR name: Files.Name);
BEGIN
Out := Files.dir.New(Files.dir.This(""), Files.ask); Ro := Out.NewWriter(Ro); Ro.SetPos(0);
(* DOS header *)
Write4(905A4DH); Write4(3); Write4(4); Write4(0FFFFH);
Write4(0B8H); Write4(0); Write4(40H); Write4(0);
Write4(0); Write4(0); Write4(0); Write4(0);
Write4(0); Write4(0); Write4(0); Write4(80H);
Write4(0EBA1F0EH); Write4(0CD09B400H); Write4(4C01B821H); Write2(21CDH);
WriteName("This program cannot be run in DOS mode.", 39);
WriteCh(0DX); WriteCh(0DX); WriteCh(0AX);
Write4(24H); Write4(0);
(* Win32 header *)
WriteName("PE", 4); (* signature bytes *)
Write2(014CH); (* cpu type (386) *)
IF isDll THEN
Write2(7); (* 7 objects *)
ELSE
Write2(6); (* 6 objects *)
END;
Write4(timeStamp); (* time/date *)
Write4(0); Write4(0);
Write2(0E0H); (* NT header size *)
IF isDll THEN
Write2(0A38EH); (* library image flags *)
ELSE
Write2(838EH); (* program image flags *)
END;
Write2(10BH); (* magic (normal ececutable file) *)
Write2(0301H); (* linker version !!! *)
Write4(CodeSize); (* code size *)
Write4(ConSize); (* initialized data size *)
Write4(DataSize); (* uninitialized data size *)
entryPos := Ro.Pos();
Write4(0); (* entry point *) (* !!! *)
Write4(CodeRva); (* base of code *)
Write4(ConRva); (* base of data *)
Write4(400000H); (* image base *)
Write4(ObjAlign); (* object align *)
Write4(FileAlign); (* file align *)
Write4(3); (* OS version *)
Write4(4); (* user version *)
Write4(4); (* subsys version *) (* mf 14.3.04: value changed from 0A0003H to 4. Corrects menubar pixel bug on Windows XP *)
Write4(0);
isPos := Ro.Pos();
Write4(0); (* image size *) (* !!! *)
Write4(HeaderSize); (* header size !!! *)
Write4(0); (* checksum *)
IF comLine THEN
Write2(3) (* dos subsystem *)
ELSE
Write2(2) (* gui subsystem *)
END;
Write2(0); (* dll flags *)
Write4(200000H); (* stack reserve size *)
Write4(10000H); (* stack commit size *)
IF isDll THEN
Write4(00100000H); (* heap reserve size *)
ELSE
Write4(00400000H); (* heap reserve size *)
END;
Write4(10000H); (* heap commit size *)
Write4(0);
Write4(16); (* num of rva/sizes *)
hexpPos := Ro.Pos();
Write4(0); Write4(0); (* export table *)
himpPos := Ro.Pos();
Write4(0); Write4(0); (* import table *) (* !!! *)
hrsrcPos := Ro.Pos();
Write4(0); Write4(0); (* resource table *) (* !!! *)
Write4(0); Write4(0); (* exception table *)
Write4(0); Write4(0); (* security table *)
fixPos := Ro.Pos();
Write4(0); Write4(0); (* fixup table *) (* !!! *)
Write4(0); Write4(0); (* debug table *)
Write4(0); Write4(0); (* image description *)
Write4(0); Write4(0); (* machine specific *)
Write4(0); Write4(0); (* thread local storage *)
Write4(0); Write4(0); (* ??? *)
Write4(0); Write4(0); (* ??? *)
Write4(0); Write4(0); (* ??? *)
Write4(0); Write4(0); (* ??? *)
Write4(0); Write4(0); (* ??? *)
Write4(0); Write4(0); (* ??? *)
(* object directory *)
WriteName(".text", 8); (* code object *)
Write4(0); (* object size (always 0) *)
codePos := Ro.Pos();
Write4(0); (* object rva *)
Write4(0); (* physical size *)
Write4(0); (* physical offset *)
Write4(0); Write4(0); Write4(0);
Write4(60000020H); (* flags: code, exec, read *)
WriteName(".var", 8); (* variable object *)
Write4(0); (* object size (always 0) *)
dataPos := Ro.Pos();
Write4(0); (* object rva *)
Write4(0); (* physical size *)
Write4(0); (* physical offset *) (* zero! (noinit) *)
Write4(0); Write4(0); Write4(0);
Write4(0C0000080H); (* flags: noinit, read, write *)
WriteName(".data", 8); (* constant object *)
Write4(0); (* object size (always 0) *)
conPos := Ro.Pos();
Write4(0); (* object rva *)
Write4(0); (* physical size *)
Write4(0); (* physical offset *)
Write4(0); Write4(0); Write4(0);
Write4(0C0000040H); (* flags: data, read, write *)
WriteName(".rsrc", 8); (* resource object *)
Write4(0); (* object size (always 0) *)
rsrcPos := Ro.Pos();
Write4(0); (* object rva *)
Write4(0); (* physical size *)
Write4(0); (* physical offset *)
Write4(0); Write4(0); Write4(0);
Write4(0C0000040H); (* flags: data, read, write *)
WriteName(".idata", 8); (* import object *)
Write4(0); (* object size (always 0) *)
impPos := Ro.Pos();
Write4(0); (* object rva *)
Write4(0); (* physical size *)
Write4(0); (* physical offset *)
Write4(0); Write4(0); Write4(0);
Write4(0C0000040H); (* flags: data, read, write *)
IF isDll THEN
WriteName(".edata", 8); (* export object *)
Write4(0); (* object size (always 0) *)
expPos := Ro.Pos();
Write4(0); (* object rva *)
Write4(0); (* physical size *)
Write4(0); (* physical offset *)
Write4(0); Write4(0); Write4(0);
Write4(0C0000040H); (* flags: data, read, write *)
END;
WriteName(".reloc", 8); (* relocation object *)
Write4(0); (* object size (always 0) *)
relPos := Ro.Pos();
Write4(0); (* object rva *)
Write4(0); (* physical size *)
Write4(0); (* physical offset *)
Write4(0); Write4(0); Write4(0);
Write4(42000040H); (* flags: data, read, ? *)
END WriteHeader;
PROCEDURE SearchObj (mod: Module; VAR name: ARRAY OF SHORTCHAR; m, fp, opt: INTEGER; VAR adr: INTEGER);
VAR dir, len, ntab, f, id, l, r, p, n, i, j: INTEGER; nch, och: SHORTCHAR;
BEGIN
Get(mod, mod.ms + modExports, dir); DEC(dir, ConBase + mod.ma); Get(mod, dir, len); INC(dir, 4);
Get(mod, mod.ms + modNames, ntab); DEC(ntab, ConBase + mod.ma);
IF name # "" THEN
l := 0; r := len;
WHILE l < r DO (* binary search *)
n := (l + r) DIV 2; p := dir + n * 16;
Get(mod, p + 8, id);
i := 0; j := ntab + id DIV 256; nch := name[0]; och := SHORT(CHR(mod.data[j]));
WHILE (nch = och) & (nch # 0X) DO INC(i); INC(j); nch := name[i]; och := SHORT(CHR(mod.data[j])) END;
IF och = nch THEN
IF id MOD 16 = m THEN Get(mod, p, f);
IF m = mTyp THEN
IF ODD(opt) THEN Get(mod, p + 4, f) END;
IF (opt > 1) & (id DIV 16 MOD 16 # mExported) THEN
W.WriteString(mod.name); W.WriteChar("."); W.WriteSString(name);
W.WriteString(" imported from "); W.WriteString(impg.name);
W.WriteString(" has wrong visibility"); W.WriteLn; error := TRUE
END;
Get(mod, p + 12, adr)
ELSIF m = mVar THEN
Get(mod, p + 4, adr); INC(adr, DataBase + mod.va)
ELSIF m = mProc THEN
Get(mod, p + 4, adr); INC(adr, CodeBase + mod.ca)
END;
IF f # fp THEN
W.WriteString(mod.name); W.WriteChar("."); W.WriteSString(name);
W.WriteString(" imported from "); W.WriteString(impg.name);
W.WriteString(" has wrong fprint"); W.WriteLn; error := TRUE
END
ELSE
W.WriteString(mod.name); W.WriteChar("."); W.WriteSString(name);
W.WriteString(" imported from "); W.WriteString(impg.name);
W.WriteString(" has wrong class"); W.WriteLn; error := TRUE
END;
RETURN
END;
IF och < nch THEN l := n + 1 ELSE r := n END
END;
W.WriteString(mod.name); W.WriteChar("."); W.WriteSString(name);
W.WriteString(" not found (imported from "); W.WriteString(impg.name);
W.WriteChar(")"); W.WriteLn; error := TRUE
ELSE (* anonymous type *)
WHILE len > 0 DO
Get(mod, dir + 4, f); Get(mod, dir + 8, id);
IF (f = fp) & (id MOD 16 = mTyp) & (id DIV 256 = 0) THEN
Get(mod, dir + 12, adr); RETURN
END;
DEC(len); INC(dir, 16)
END;
W.WriteString("anonymous type in "); W.WriteString(mod.name);
W.WriteString(" not found"); W.WriteLn; error := TRUE
END
END SearchObj;
PROCEDURE CollectExports (mod: Module);
VAR dir, len, ntab, id, i, j, n: INTEGER; e, exp: Export;
BEGIN
Get(mod, mod.ms + modExports, dir); DEC(dir, ConBase + mod.ma); Get(mod, dir, len); INC(dir, 4);
Get(mod, mod.ms + modNames, ntab); DEC(ntab, ConBase + mod.ma); n := 0;
WHILE n < len DO
Get(mod, dir + 8, id);
IF (id DIV 16 MOD 16 # mInternal) & ((id MOD 16 = mProc) OR (id MOD 16 = mVar))THEN (* exported procedure & var *)
NEW(exp);
i := 0; j := ntab + id DIV 256;
WHILE mod.data[j] # 0 DO exp.name[i] := SHORT(CHR(mod.data[j])); INC(i); INC(j) END;
exp.name[i] := 0X;
Get(mod, dir + 4, exp.adr);
IF id MOD 16 = mProc THEN INC(exp.adr, CodeRva + mod.ca)
ELSE ASSERT(id MOD 16 = mVar); INC(exp.adr, DataRva + mod.va)
END;
IF (firstExp = NIL) OR (exp.name < firstExp.name) THEN
exp.next := firstExp; firstExp := exp;
IF lastExp = NIL THEN lastExp := exp END
ELSE
e := firstExp;
WHILE (e.next # NIL) & (exp.name > e.next.name) DO e := e.next END;
exp.next := e.next; e.next := exp;
IF lastExp = e THEN lastExp := exp END
END;
INC(numExp);
END;
INC(n); INC(dir, 16)
END
END CollectExports;
PROCEDURE WriteTermCode (m: Module; i: INTEGER);
VAR x: INTEGER;
BEGIN
IF m # NIL THEN
IF m.dll THEN WriteTermCode(m.next, i)
ELSE
IF isStatic THEN WriteTermCode(m.next, i + 1) END;
Get(m, m.ms + modTerm, x); (* terminator address in mod desc*)
IF x = 0 THEN
WriteCh(005X); Write4(0) (* add EAX, 0 (nop) *)
ELSE
WriteCh(0E8X); Write4(x - lastTerm + 5 * i - CodeBase) (* call term *)
END
END
END
END WriteTermCode;
PROCEDURE WriteCode;
VAR mod, m: Module; i, x, a, fp, opt: INTEGER; exp: Export; name: Name;
BEGIN
IF isStatic THEN
WriteCh(053X); (* push ebx *)
a := 1;
IF isDll THEN
WriteCh(083X); WriteCh(07CX); WriteCh(024X); WriteCh(00CX); WriteCh(001X); (* cmp [12, esp], 1 *)
WriteCh(00FX); WriteCh(085X); Write4(10 + 5 * numMod); (* jne L1 *)
INC(a, 11)
ELSE
WriteCh(053X); WriteCh(053X); (* push ebx; push ebx *)
INC(a, 2)
END;
WriteCh(0BBX); Write4(ConBase + last.ma + last.ms); Reloc(CodeBase + a + 1); (* mov bx, modlist *)
INC(a, 5); m := modList;
WHILE m # NIL DO
IF ~m.dll THEN
WriteCh(0E8X); INC(a, 5); Write4(m.ca - a) (* call body *)
END;
m := m.next
END;
IF isDll THEN
WriteCh(0E9X); Write4(11 + 5 * numMod); (* jp L2 *)
WriteCh(083X); WriteCh(07CX); WriteCh(024X); WriteCh(00CX); WriteCh(000X); (* L1: cmp [12, esp], 0 *)
WriteCh(00FX); WriteCh(085X); Write4(5 * numMod); (* jne L2 *)
INC(a, 16)
END;
termPos := Ro.Pos(); i := 0;
WHILE i < numMod DO (* nop for call terminator *)
WriteCh(02DX); Write4(0); (* sub EAX, 0 *)
INC(i); INC(a, 5)
END;
lastTerm := a;
WriteCh(05BX); (* L2: pop ebx *)
IF isDll THEN
WriteCh(0B8X); Write4(1); (* mov eax,1 *)
WriteCh(0C2X); Write2(12) (* ret 12 *)
ELSE
WriteCh(05BX); WriteCh(05BX); (* pop ebx; pop ebx *)
WriteCh(0C3X) (* ret *)
END
ELSIF isDll THEN
WriteCh(053X); (* push ebx *)
WriteCh(083X); WriteCh(07CX); WriteCh(024X); WriteCh(00CX); WriteCh(001X); (* cmp [12, esp], 1 *)
WriteCh(075X); WriteCh(SHORT(CHR(12))); (* jne L1 *)
WriteCh(0BBX); Write4(ConBase + last.ma + last.ms); Reloc(CodeBase + 9); (* mov bx, modlist *)
WriteCh(0E8X); Write4(main.ca - 18); (* call main *)
WriteCh(0EBX); WriteCh(SHORT(CHR(12))); (* jp L2 *)
WriteCh(083X); WriteCh(07CX); WriteCh(024X); WriteCh(00CX); WriteCh(000X); (* L1: cmp [12, esp], 0 *)
WriteCh(075X); WriteCh(SHORT(CHR(5))); (* jne L2 *)
termPos := Ro.Pos();
WriteCh(02DX); Write4(0); (* sub EAX, 0 *) (* nop for call terminator *)
lastTerm := 32;
WriteCh(05BX); (* L2: pop ebx *)
WriteCh(0B8X); Write4(1); (* mov eax,1 *)
WriteCh(0C2X); Write2(12) (* ret 12 *)
ELSE
WriteCh(0BBX); Write4(ConBase + last.ma + last.ms); Reloc(CodeBase + 1); (* mov bx, modlist *)
WriteCh(0E9X); Write4(main.ca - 10); (* jmp main *)
END;
NEW(code, maxCode);
mod := modList;
WHILE mod # NIL DO impg := mod; impd := mod;
IF ~mod.dll THEN
mod.file := ThisFile(mod.name);
R := mod.file.NewReader(R); R.SetPos(mod.hs);
NEW(mod.data, mod.ms + mod.ds);
R.ReadBytes(mod.data^, 0, mod.ms + mod.ds);
R.ReadBytes(code^, 0, mod.cs);
RNum(x);
IF x # 0 THEN
IF (mod # kernel) & (kernel # NIL) THEN
SearchObj(kernel, newRec, mProc, NewRecFP, -1, a); Fixup0(x, a)
ELSE
W.WriteSString("no kernel"); W.WriteLn;
Log.text.Append(Log.buf); error := TRUE; RETURN
END
END;
RNum(x);
IF x # 0 THEN
IF (mod # kernel) & (kernel # NIL) THEN
SearchObj(kernel, newArr, mProc, NewArrFP, -1, a); Fixup0(x, a)
ELSE
W.WriteSString("no kernel"); W.WriteLn;
Log.text.Append(Log.buf); error := TRUE; RETURN
END
END;
Fixup(ConBase + mod.ma);
Fixup(ConBase + mod.ma + mod.ms);
Fixup(CodeBase + mod.ca);
Fixup(DataBase + mod.va); i := 0;
WHILE i < mod.ni DO
m := mod.imp[i]; impd := m; RNum(x);
WHILE x # 0 DO
ReadName(name); RNum(fp); opt := 0;
IF x = mTyp THEN RNum(opt) END;
IF m.dll THEN
IF x = mProc THEN exp := m.exp;
WHILE exp.name # name DO exp := exp.next END;
a := exp.adr + CodeBase + CodeSize
END
ELSE
SearchObj(m, name, x, fp, opt, a)
END;
IF x # mConst THEN Fixup(a) END;
RNum(x)
END;
IF ~m.dll THEN
Get(mod, mod.ms + modImports, x); DEC(x, ConBase + mod.ma); INC(x, 4 * i);
Put(mod, x, ConBase + m.ma + m.ms); (* imp ref *)
Reloc(ConBase + mod.ma + x);
Get(m, m.ms + modRefcnt, x); Put(m, m.ms + modRefcnt, x + 1) (* inc ref count *)
END;
INC(i)
END;
Ro.WriteBytes(code^, 0, mod.cs);
IF mod.intf THEN CollectExports(mod) END;
mod.file.Close; mod.file := NIL
END;
mod := mod.next
END;
(* dll links *)
mod := modList; ImpHSize := ImpSize;
WHILE mod # NIL DO
IF mod.dll THEN
exp := mod.exp;
WHILE exp # NIL DO
WriteCh(0FFX); WriteCh(25X); Write4(ImageBase + ImpRva + ImpSize); (* JMP indirect *)
Reloc(CodeBase + CodeSize + exp.adr + 2);
INC(ImpSize, 4); INC(numImp); exp := exp.next
END;
INC(ImpSize, 4); INC(numImp) (* sentinel *)
END;
mod := mod.next
END
END WriteCode;
PROCEDURE WriteConst;
VAR mod, last: Module; x: INTEGER;
BEGIN
mod := modList; last := NIL;
WHILE mod # NIL DO
IF ~mod.dll THEN
IF last # NIL THEN
Put(mod, mod.ms, ConBase + last.ma + last.ms); (* mod list *)
Reloc(ConBase + mod.ma + mod.ms);
END;
Get(mod, mod.ms + modOpts, x);
IF isStatic THEN INC(x, 10000H) END; (* set init bit (16) *)
IF isDll THEN INC(x, 1000000H) END; (* set dll bit (24) *)
Put(mod, mod.ms + modOpts, x);
Ro.WriteBytes(mod.data^, 0, mod.ms + mod.ds);
last := mod
END;
mod := mod.next