From 2c1049b5d41dbb051ab3e6fa00164b250fe0af7f Mon Sep 17 00:00:00 2001
From: nickysn <nickysn@gmail.com>
Date: Thu, 4 Jun 2015 23:03:22 +0000
Subject: [PATCH] + read the LEDATA omf records (i.e. the actual section data)

git-svn-id: trunk@30975 -
---
 compiler/ogomf.pas | 70 ++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 67 insertions(+), 3 deletions(-)

diff --git a/compiler/ogomf.pas b/compiler/ogomf.pas
index 7afdff724f..6e6a78649c 100644
--- a/compiler/ogomf.pas
+++ b/compiler/ogomf.pas
@@ -129,6 +129,7 @@ interface
         function ReadSegDef(RawRec: TOmfRawRecord; objdata:TObjData): Boolean;
         function ReadGrpDef(RawRec: TOmfRawRecord; objdata:TObjData): Boolean;
         function ReadExtDef(RawRec: TOmfRawRecord; objdata:TObjData): Boolean;
+        function ReadLEDataAndFixups(RawRec: TOmfRawRecord; objdata:TObjData): Boolean;
 
         property LNames: TOmfOrderedNameCollection read FLNames;
         property ExtDefs: TFPHashObjectList read FExtDefs;
@@ -1050,6 +1051,70 @@ implementation
         Result:=True;
       end;
 
+    function TOmfObjInput.ReadLEDataAndFixups(RawRec: TOmfRawRecord; objdata: TObjData): Boolean;
+      var
+        Is32Bit: Boolean;
+        NextOfs: Integer;
+        SegmentIndex: Integer;
+        EnumeratedDataOffset: DWord;
+        BlockLength: Integer;
+        objsec: TOmfObjSection;
+      begin
+        Result:=False;
+        if not (RawRec.RecordType in [RT_LEDATA,RT_LEDATA32]) then
+          internalerror(2015040301);
+        Is32Bit:=RawRec.RecordType=RT_LEDATA32;
+        NextOfs:=RawRec.ReadIndexedRef(0,SegmentIndex);
+        if Is32Bit then
+          begin
+            if (NextOfs+3)>=RawRec.RecordLength then
+              internalerror(2015040504);
+            EnumeratedDataOffset := RawRec.RawData[NextOfs]+
+                                   (RawRec.RawData[NextOfs+1] shl 8)+
+                                   (RawRec.RawData[NextOfs+2] shl 16)+
+                                   (RawRec.RawData[NextOfs+3] shl 24);
+            Inc(NextOfs,4);
+          end
+        else
+          begin
+            if (NextOfs+1)>=RawRec.RecordLength then
+              internalerror(2015040504);
+            EnumeratedDataOffset := RawRec.RawData[NextOfs]+
+                                   (RawRec.RawData[NextOfs+1] shl 8);
+            Inc(NextOfs,2);
+          end;
+        BlockLength:=RawRec.RecordLength-NextOfs-1;
+        if BlockLength<0 then
+          internalerror(2015060501);
+        if BlockLength>1024 then
+          begin
+            InputError('LEDATA contains more than 1024 bytes of data');
+            exit;
+          end;
+
+        if (SegmentIndex<1) or (SegmentIndex>objdata.ObjSectionList.Count) then
+          begin
+            InputError('Segment index in LEDATA field is out of range');
+            exit;
+          end;
+        objsec:=TOmfObjSection(objdata.ObjSectionList[SegmentIndex-1]);
+
+        objsec.SecOptions:=objsec.SecOptions+[oso_Data];
+        if (objsec.Data.Size<>EnumeratedDataOffset) then
+          begin
+            InputError('LEDATA enumerated data offset field out of sequence');
+            exit;
+          end;
+        if (EnumeratedDataOffset+BlockLength)>objsec.Size then
+          begin
+            InputError('LEDATA goes beyond the segment size declared in the SEGDEF record');
+            exit;
+          end;
+        objsec.Data.write(RawRec.RawData[NextOfs],BlockLength);
+        {todo: read also the FIXUPP record that may follow}
+        Result:=True;
+      end;
+
     constructor TOmfObjInput.create;
       begin
         inherited create;
@@ -1129,9 +1194,8 @@ implementation
                 {todo}
               end;
             RT_LEDATA,RT_LEDATA32:
-              begin
-                {todo}
-              end;
+              if not ReadLEDataAndFixups(FRawRecord,objdata) then
+                exit;
             RT_FIXUPP,RT_FIXUPP32:
               begin
                 {todo}