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* i8086-msdos internal linker: improved handling of the _edata and _end internal

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symbols - add them to 'DGROUP' and define them in a section with class 'BSS'

git-svn-id: trunk@31382 -
This commit is contained in:
nickysn 2015-08-24 12:39:39 +00:00
parent 5d2a54136a
commit cff94639d5
1 changed files with 28 additions and 0 deletions
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28
compiler/ogomf.pas
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@ -277,6 +277,7 @@ interface
property ExeUnifiedLogicalGroups: TFPHashObjectList read FExeUnifiedLogicalGroups;
property MZFlatContentSection: TMZExeSection read GetMZFlatContentSection;
protected
procedure Load_Symbol(const aname:string);override;
procedure DoRelocationFixup(objsec:TObjSection);override;
procedure Order_ObjSectionList(ObjSectionList : TFPObjectList;const aPattern:string);override;
procedure MemPos_EndExeSection;override;
@ -2047,6 +2048,33 @@ implementation
Result:=True;
end;
procedure TMZExeOutput.Load_Symbol(const aname: string);
var
dgroup: TObjSectionGroup;
sym: TObjSymbol;
begin
{ special handling for the '_edata' and '_end' symbols, which are
internally added by the linker }
if (aname='_edata') or (aname='_end') then
begin
{ create an internal segment with the 'BSS' class }
internalObjData.createsection('*'+aname+'||BSS',0,[]);
{ add to group 'DGROUP' }
dgroup:=nil;
if assigned(internalObjData.GroupsList) then
dgroup:=TObjSectionGroup(internalObjData.GroupsList.Find('DGROUP'));
if dgroup=nil then
dgroup:=internalObjData.createsectiongroup('DGROUP');
SetLength(dgroup.members,Length(dgroup.members)+1);
dgroup.members[Length(dgroup.members)-1]:=internalObjData.CurrObjSec;
{ define the symbol itself }
sym:=internalObjData.SymbolDefine(aname,AB_GLOBAL,AT_DATA);
sym.group:=dgroup;
end
else
inherited;
end;
procedure TMZExeOutput.DoRelocationFixup(objsec: TObjSection);
var
i: Integer;