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+ parse FIXUPP records in the omf object reader (although converting them TOmfRelocation is not yet implemented)

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git-svn-id: trunk@31320 -
This commit is contained in:
nickysn 2015-08-13 13:44:46 +00:00
parent 59f164b948
commit e59c164844
1 changed files with 55 additions and 2 deletions
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57
compiler/ogomf.pas
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@ -126,6 +126,8 @@ interface
FPubDefs: TFPHashObjectList;
FRawRecord: TOmfRawRecord;
function PeekNextRecordType: Byte;
function ReadLNames(RawRec: TOmfRawRecord): Boolean;
function ReadSegDef(RawRec: TOmfRawRecord; objdata:TObjData): Boolean;
function ReadGrpDef(RawRec: TOmfRawRecord; objdata:TObjData): Boolean;
@ -950,6 +952,20 @@ implementation
TOmfObjInput
****************************************************************************}
function TOmfObjInput.PeekNextRecordType: Byte;
var
OldPos: LongInt;
begin
OldPos:=FReader.Pos;
if not FReader.read(Result, 1) then
begin
InputError('Unexpected end of file');
Result:=0;
exit;
end;
FReader.seek(OldPos);
end;
function TOmfObjInput.ReadLNames(RawRec: TOmfRawRecord): Boolean;
var
LNamesRec: TOmfRecord_LNAMES;
@ -1163,6 +1179,8 @@ implementation
EnumeratedDataOffset: DWord;
BlockLength: Integer;
objsec: TOmfObjSection;
FixupRawRec: TOmfRawRecord;
Fixup: TOmfSubRecord_FIXUP;
begin
Result:=False;
if not (RawRec.RecordType in [RT_LEDATA,RT_LEDATA32]) then
@ -1215,7 +1233,36 @@ implementation
exit;
end;
objsec.Data.write(RawRec.RawData[NextOfs],BlockLength);
{todo: read also the FIXUPP record that may follow}
{ also read all the FIXUPP records that may follow }
while PeekNextRecordType in [RT_FIXUPP,RT_FIXUPP32] do
begin
FixupRawRec:=TOmfRawRecord.Create;
FixupRawRec.ReadFrom(FReader);
if not FRawRecord.VerifyChecksumByte then
begin
InputError('Invalid checksum in OMF record');
FixupRawRec.Free;
exit;
end;
NextOfs:=0;
Fixup:=TOmfSubRecord_FIXUP.Create;
Fixup.Is32Bit:=FixupRawRec.RecordType=RT_FIXUPP32;
while NextOfs<(FixupRawRec.RecordLength-1) do
begin
NextOfs:=Fixup.ReadAt(FixupRawRec,NextOfs);
if Fixup.FrameDeterminedByThread or Fixup.TargetDeterminedByThread then
begin
InputError('Fixups determined by thread not supported');
Fixup.Free;
FixupRawRec.Free;
exit;
end;
{todo: convert the fixup to a TOmfRelocation }
end;
Fixup.Free;
FixupRawRec.Free;
end;
Result:=True;
end;
@ -1301,9 +1348,15 @@ implementation
RT_LEDATA,RT_LEDATA32:
if not ReadLEDataAndFixups(FRawRecord,objdata) then
exit;
RT_LIDATA,RT_LIDATA32:
begin
InputError('LIDATA records are not supported');
exit;
end;
RT_FIXUPP,RT_FIXUPP32:
begin
{todo}
InputError('FIXUPP record is invalid, because it does not follow a LEDATA or LIDATA record');
exit;
end;
RT_MODEND,RT_MODEND32:
begin