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+ implemented writing .com files in the i8086-msdos internal linker

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git-svn-id: trunk@31374 -
This commit is contained in:
nickysn 2015-08-23 22:06:30 +00:00
parent fa9a1f706b
commit 78cbb1ba2b
1 changed files with 51 additions and 8 deletions
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59
compiler/ogomf.pas
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@ -267,6 +267,8 @@ interface
procedure CalcExeGroups;
procedure CalcSegments_MemBasePos;
procedure WriteMap_SegmentsAndGroups;
function writeExe:boolean;
function writeCom:boolean;
property ExeUnifiedLogicalSegments: TFPHashObjectList read FExeUnifiedLogicalSegments;
property ExeUnifiedLogicalGroups: TFPHashObjectList read FExeUnifiedLogicalGroups;
property MZFlatContentSection: TMZExeSection read GetMZFlatContentSection;
@ -1996,6 +1998,51 @@ implementation
exemap.Add('');
end;
function TMZExeOutput.writeExe: boolean;
var
Header: TMZExeHeader;
begin
Result:=False;
Header:=TMZExeHeader.Create;
{todo: fill header data}
Header.WriteTo(FWriter);
Header.Free;
Result:=True;
end;
function TMZExeOutput.writeCom: boolean;
const
ComFileOffset=$100;
var
i: Integer;
ExeSec: TMZExeSection;
ObjSec: TOmfObjSection;
StartDataPos: LongWord;
buf: array [0..1023] of byte;
bytesread: LongWord;
begin
ExeSec:=MZFlatContentSection;
for i:=0 to ExeSec.ObjSectionList.Count-1 do
begin
ObjSec:=TOmfObjSection(ExeSec.ObjSectionList[i]);
FWriter.WriteZeros(max(0,ObjSec.MemPos-ComFileOffset-FWriter.Size));
if assigned(ObjSec.Data) then
begin
if ObjSec.MemPos<ComFileOffset then
begin
ObjSec.Data.seek(ComFileOffset-ObjSec.MemPos);
repeat
bytesread:=ObjSec.Data.read(buf,sizeof(buf));
if bytesread<>0 then
FWriter.write(buf,bytesread);
until bytesread=0;
end
else
FWriter.writearray(ObjSec.Data);
end;
end;
end;
procedure TMZExeOutput.DoRelocationFixup(objsec: TObjSection);
var
i: Integer;
@ -2041,15 +2088,11 @@ implementation
end;
function TMZExeOutput.writeData: boolean;
var
Header: TMZExeHeader;
begin
Result:=False;
Header:=TMZExeHeader.Create;
{todo: fill header data}
Header.WriteTo(FWriter);
Header.Free;
Result:=True;
if apptype=app_com then
Result:=WriteCom
else
Result:=WriteExe;
end;
constructor TMZExeOutput.create;