Pppppppppppppppppp Llllllllllllll P | Intel 121748-001 guide

S886 Object Module Formats

Version 4.

CASE 1: EX'fERNAL symbol (SYM) is found (by LINK) to be in the same LSEG as the reference. The followin1 four cases exist .

Assume that PSEG is sgecified as .. PSeG: LOCATION".

PPPPPPPPPPPPPPPPPP

P	P
p	P
P	P
P	LLLLLLLLLLLLLL P

PL +..---~---+ L P

p	L	LOe		L	p
P L +--------.f. L P
P	L	I		L	P
P	L	I		L P
P	L	I		L	P
P	L	V-		L	P
P	L	+----..---+		L P
P	L I TARGET		,	L P
P L +-_.... _----+				L	P
P	L			L	P

P LLLLLLLLLLLLLL P PPPPPPPPPPPPPPPPPP

ppppppppftppppppppp

P	LLLLLLILLLLLLL				p
P	LLLLLLILLLLLLL				P
P	L	+---------+		L	P
P	L	+---------+		L	P
P	L		LOe	L	P
P L +--------+ L P
P	L			L	P
P	L			L	P
P	L			L P
P	L			L	P
P	L			L P
P L +--------+ L P
P	L	I	TARGET I L P
P L +--------+ L P
P	L			L P
P	LLLLLLILLLLLLL				P

PPPPPPPP!PPPPPPPPP

PPPPPPPPPPPPPPPPPP

PP

PP

PP

P LLLLLLLLLLLLLL P

<- PP P L +-.-,-------,.-+ L P

P L I TARGET I L P

		P L		+--.--~...--+	L P
		P	L	....	L	P
		P	L		L	P
		P	L		L	P
		P	L		L	P
<-		P	L	+----.----+	L	P
<-	PT	P	L	+----.----+	L	P
		P	L	LOC	L	P
		P L +---.,-_..._-+L P
		P	L		L	P
		P	LLLLLLLLLLLLLL			P
		PPPPPPPPPPPPPPPPPP
		PPPPPPPP!PPPPPPppp
		P				P
		P	LLLLLL!LLLLLLL			P
<-		P	L	V	L	P
<-	pp	P	L	+____ 4a ___ +	L	P
		P L I TARGE'r , L P
		P L +--------+ L P
		P	L		L	P
		P	L		L	P
		P	L		L	P
		I?	L		L	P
<-		P	L	+--------+	L	P
<-	PT	P	L	+--------+	L	P
		P	L	LOe	L	p
		P L +--------+			L P
		P	L		L	P
		P	LLLLLLILLLLLLL			P

PPPPPPPPVPPPPPPPPP

<- PT

<- PP

<- PT

<- pp

Depending on the absolute lenqth of the arrow, LINK can perfor~ a "normal" fixup or a "clever" fi~un (exclam~tory arrow). Note that even if the LSEG continues to qrow in future LINKinq, the fixup is O~ as lona as the LSEG remains less than ~4K in lenath, which is enforced by LINK. Thus the fixup is ~o~ple~~!y.. !.e..~q!~~~_ by LINK."·

1"4

Image 104

Intel 121748-001 Pppppppppppppppppp Llllllllllllll P, Llllllllllllll P Pppppppppppppppppp, Llllllilllllll, Target I L P

Contents

Relocatable Object Module Formats IA 500/1181/500 IPI Contents Symbol DefinitionType Definition Hecord Symbol Control Library Dictionary Record Comment Record Appendices Numeric List of Record TypesPage Page Page Page Module Identification Segment Addressing Data Indices Page Page Index TargetTarget Frame Number Target Sicode ,1024Page Frame F11F21 SEGMENT-RELATIVE Fixups Fixup Record Case +------+Oata Target Eistruct ,24 Frame Sifoo Target Eiary Frame Sifoo Target Eiary ,0000HFrame Sifoo Target Eiary ,-2 Frame Sifoo Target Eistrct ,99 Record Order TheadrLheadr RheadrPage Official Abbreviation 1111Number Number Repeated or Conditional Fields Module Name Module Header RecordREC Record CHK TYP Length Lheadr REC Record Overlay OAT Record Count Offset Dynamic Maximum Size Static Storage Module InfoStatic Page List OF· NAMES. Record Record * Name Length OAT NameOFF LTL MXY LX+LY+GLX+LY Segment Length Overlay Name Index Segment NAME. IndexClass Name Index Index FFHFEH Segment Object Module Formats VersionFDH I I I Z I Z I Z I Z I Z Ibglibgm 80B6 Object Module Formats Type Definition Record REC Record Name Eight CHK TY P LengthLeaf SUM SEH USE Descriptor Eight Leaf Descriptor 129 Object Module FormatsVersion 133 127 Page Public Names Definition REC Record PublicPublic Type CHK TYP Puslic Base Public Offset Frame TargetFrame GI G Type Index Extdef REC Record 8CH ~il·E. Index TYP Length Symbols Local Symbols BaseLocal SY~BOLS. Record REC Record Local Type Type Index Local Symbol NameLocal S~~BOL Offset Line NU!\1BER Sase Line Numbers Record Linnum RECTYP Length 8986 Ob·ject Module Formats Version May Record Block Procedure Type CHK TYP Length Base Block Definition RecordIndex SUM 7AH Block Base Block Name Offset Block Length Address Offset Procedure InformationReturn Length SUM 7CH TYPBlkend REC Record CHK REC Record TYP Length InformationOffset Index SUM Datum If Frame ~ETHOD=0, the Datum has the format Symbol Name Block Index Relocatable Enumerated Data Record OAT * CHK TY PData Record Base Data Record Offset DAT REC Record IteratedData Record Base Data Record Offset Block Count Repeat Block Count Content Repeat CountIterated Data Block Frame NU....,SER Physical Enumerated Data Record Peoata REC FrameTYP Length Number Physical Iterated Data Record Frame OFF IteratedSET Data Block LENGrH EnumeratedASH Offset Enumerated Data OffsetPage Logical Iterated Data Record Object Module Formats Version Same as for the Ridata record Fixupp Thread is a field with the followinq formatStructure REC Placement FixupLocat Target * Target TIP I Targt Page Overlay Attr Z I Z I Z I Z I Z I S I a TYP * SUM TYP Type of END TYP Length Contents Register Initialization RecordREC Record REG Register REG·TYP OAT Datum Register ContentsTarget Page TYP Length Addrs Module ~ND RecordStart Frame Offset Number Module COU~T Library Header RecordTYP Length Count Number LiSNAM A6H Library Module Locations Record Libloc 00H * SUM TYP Length Type Pl LI ZI zl ZI ZI ZI zComment Record This field provides the commentary information SgS6 Object Module Formats Version 7C BlkendLheadr Peoata Pidata Linnum Appendix Type Representations ScalarPointer Structure LIn Appendix Syntax Diagrams Libhed Libnam Component +-1 Imod Lheadr -1 sgr +-1 modtailRheadr -1 sqr +-Imodtail +-1 data 1-+ ~-+ Regint CompOnent Data 1--+Tcomponent 1--+ 8e8~ Object Module Formats Version 4.rtJ Pubdef ExtdefTypdef Blkdef Blkend Content Def 88.8~ Obj ect Mod ule Pormats+-- Pidata --+ +-- Ridata --+ Appendix Examples of FIXU~S Part 1. SELF-RELATIVE REFERE~CES Pppppppppppppppppppppp Location Lllllllllllllllllllllllllllllll Llocationl InO LlllllllllllllLOC FIXUP. Representation ~OCArE Operation Llllllllllllll P pp+ L P LLLLLLILt.LLLLL RARGET Examples JMP SYM + Llllllllllllll PP LOCLLLI.LLLLLLLLLL Fixuprepresentati Link Operation Pppppppppppppppppp Llllllllllllll P Llllllllllllll P PpppppppppppppppppLlllllilllllll Target I L P Chanqe Or SI8 where dl is app~ied to Location depending onChange Locate Operation Llllllllllllll Fixup Representation Location Offset Llllllllllllll Locate Operation Link OperationPseg Frame F~ ExamplesJMP Location Offset Frame LIe Locate Operation F8VAL Llllllllilllll FOVAL-ILlllllllllllll Part 2. Segment Relative References Llllllllllllll FIXUP. Representation Location Pointer Target I L Locate Operation LOe Fixup RepresentationLocation Pointer Target Eisym ?=A LllllllllllllllllPpppppppppppppppppppppppp SYM PS EG P# SYM Target Lllllllllllllllllll MOV AH.HIGHSYM Fixup Representation Location Base Pseg Target Target SI B Location Base Pseg TargetPage