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+ Basic executable stack support in TExeOutput.
+ Two stubs (TExeOutput.Load_DynamicObject and TObjInput.CanReadObjData) to override in ELF linker. + Stop linking if errors were detected while loading object files. * Changed TStaticLibrary to TObject. It is never looked up by name, so hashing is redundant; moreover its name has been changed to TCmdStr, which may be trimmed by TFPHashList. git-svn-id: trunk@21968 -
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8703a15a83
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@ -93,7 +93,7 @@ interface
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FCExeOutput : TExeOutputClass;
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FCObjInput : TObjInputClass;
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{ Libraries }
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FStaticLibraryList : TFPHashObjectList;
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FStaticLibraryList : TFPObjectList;
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FImportLibraryList : TFPHashObjectList;
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procedure Load_ReadObject(const para:TCmdStr);
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procedure Load_ReadStaticLibrary(const para:TCmdStr);
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@ -112,7 +112,7 @@ interface
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IsHandled : PBooleanArray;
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property CObjInput:TObjInputClass read FCObjInput write FCObjInput;
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property CExeOutput:TExeOutputClass read FCExeOutput write FCExeOutput;
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property StaticLibraryList:TFPHashObjectList read FStaticLibraryList;
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property StaticLibraryList:TFPObjectList read FStaticLibraryList;
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property ImportLibraryList:TFPHashObjectList read FImportLibraryList;
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procedure DefaultLinkScript;virtual;abstract;
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procedure ScriptAddGenericSections(secnames:string);
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@ -848,7 +848,7 @@ Implementation
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begin
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inherited Create;
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linkscript:=TCmdStrList.Create;
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FStaticLibraryList:=TFPHashObjectList.Create(true);
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FStaticLibraryList:=TFPObjectList.Create(true);
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FImportLibraryList:=TFPHashObjectList.Create(true);
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exemap:=nil;
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exeoutput:=nil;
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@ -960,7 +960,7 @@ Implementation
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exit;
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Comment(V_Tried,'Opening library '+para);
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objreader:=TArObjectreader.create(para);
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TStaticLibrary.Create(StaticLibraryList,para,objreader,CObjInput);
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StaticLibraryList.Add(TStaticLibrary.Create(para,objreader,CObjInput));
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end;
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@ -1276,6 +1276,8 @@ Implementation
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ParseScript_Handle;
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{ Load .o files and resolve symbols }
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ParseScript_Load;
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if ErrorCount>0 then
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goto myexit;
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exeoutput.ResolveSymbols(StaticLibraryList);
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{ Generate symbols and code to do the importing }
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exeoutput.GenerateLibraryImports(ImportLibraryList);
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@ -240,6 +240,7 @@ interface
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property CObjSection:TObjSectionClass read FCObjSection write FCObjSection;
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public
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CurrPass : byte;
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ExecStack : boolean;
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constructor create(const n:string);virtual;
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destructor destroy;override;
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{ Sections }
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@ -312,6 +313,7 @@ interface
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destructor destroy;override;
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function newObjData(const n:string):TObjData;
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function ReadObjData(AReader:TObjectreader;Data:TObjData):boolean;virtual;abstract;
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class function CanReadObjData(AReader:TObjectreader):boolean;virtual;
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procedure inputerror(const s : string);
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end;
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TObjInputClass=class of TObjInput;
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@ -368,12 +370,13 @@ interface
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end;
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TExeSectionClass=class of TExeSection;
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TStaticLibrary = class(TFPHashObject)
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TStaticLibrary = class(TObject)
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private
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FName : TCmdStr;
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FArReader : TObjectReader;
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FObjInputClass : TObjInputClass;
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public
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constructor create(AList:TFPHashObjectList;const AName:string;AReader:TObjectReader;AObjInputClass:TObjInputClass);
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constructor create(const AName:TCmdStr;AReader:TObjectReader;AObjInputClass:TObjInputClass);
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destructor destroy;override;
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property ArReader:TObjectReader read FArReader;
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property ObjInputClass:TObjInputClass read FObjInputClass;
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@ -444,6 +447,7 @@ interface
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CurrDataPos : aword;
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MaxMemPos : qword;
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IsSharedLibrary : boolean;
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ExecStack : boolean;
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constructor create;virtual;
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destructor destroy;override;
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function FindExeSection(const aname:string):TExeSection;
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@ -454,6 +458,7 @@ interface
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procedure Load_ProvideSymbol(const aname:string);virtual;
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procedure Load_IsSharedLibrary;
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procedure Load_ImageBase(const avalue:string);
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procedure Load_DynamicObject(ObjData:TObjData);virtual;
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procedure Order_Start;virtual;
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procedure Order_End;virtual;
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procedure Order_ExeSection(const aname:string);virtual;
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@ -477,7 +482,7 @@ interface
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procedure DataPos_Symbols;virtual;
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procedure BuildVTableTree(VTInheritList,VTEntryList:TFPObjectList);
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procedure PackUnresolvedExeSymbols(const s:string);
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procedure ResolveSymbols(StaticLibraryList:TFPHashObjectList);
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procedure ResolveSymbols(StaticLibraryList:TFPObjectList);
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procedure PrintMemoryMap;
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procedure FixupSymbols;
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procedure FixupRelocations;
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@ -1456,9 +1461,9 @@ implementation
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TStaticLibrary
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****************************************************************************}
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constructor TStaticLibrary.create(AList:TFPHashObjectList;const AName:string;AReader:TObjectReader;AObjInputClass:TObjInputClass);
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constructor TStaticLibrary.create(const AName:TCmdStr;AReader:TObjectReader;AObjInputClass:TObjInputClass);
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begin
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inherited create(AList,AName);
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FName:=AName;
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FArReader:=AReader;
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FObjInputClass:=AObjInputClass;
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end;
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@ -1595,6 +1600,7 @@ implementation
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if ObjData.classtype<>FCObjData then
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Comment(V_Error,'Invalid input object format for '+ObjData.name+' got '+ObjData.classname+' expected '+FCObjData.classname);
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ObjDataList.Add(ObjData);
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ExecStack:=ExecStack or ObjData.ExecStack;
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end;
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@ -1660,6 +1666,11 @@ implementation
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end;
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procedure TExeOutput.Load_DynamicObject(ObjData:TObjData);
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begin
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end;
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procedure TExeOutput.Order_Start;
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begin
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end;
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@ -2079,7 +2090,7 @@ implementation
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end;
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procedure TExeOutput.ResolveSymbols(StaticLibraryList:TFPHashObjectList);
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procedure TExeOutput.ResolveSymbols(StaticLibraryList:TFPObjectList);
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var
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ObjData : TObjData;
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exesym : TExeSymbol;
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@ -2987,6 +2998,12 @@ implementation
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end;
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class function TObjInput.CanReadObjData(AReader:TObjectReader):boolean;
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begin
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result:=false;
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end;
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procedure TObjInput.ReadSectionContent(Data:TObjData);
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var
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i: longint;
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