iAPX 286 Operating System Writers Guide 1983

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interBINDING AND LOADINGPL/M-286 COMPILER 960-515 date PAGE 8177178179181182183184185186188189191192194195444432111111111/* DPL = 3; TI = 1 */NEW LDT SELW = (SHL(LIX,3) OR 07H);/*-Transfer descriptor to new LDT */CALL LOAD LDT(TASK SLOT,NEW LDT SEL,DCS_SEL,@EXCEP);IF EXCEPTION THEN CALL REPORT (@EXCEP);END /* unallocated data or code segment */;END /* stepping thru DESCRP entries */;END TRANSFER_REMAINDERS;/***************************************************** ~*//* Main Line * /CALL INITIALIZE_SYSTEM;CALL BUILD BOND TABLE (@BOND FILESPEC,@EXCEP);IF EXCEPTION THEN CALL REPORT (@EXCEP);CALL RESERVE SLOTS (IN LDT, 1, @DCS SEL, @EXCEP);IF EXCEPTION-THEN CALL-REPORT (@EXCEP);CALL RESERVE SLOTS (IN LDT, 1, @DESCRP SEL, @EXCEP);IF EXCEPTION-THEN CALL-REPORT (@EXCEP);CALL RESERVE SLOTS (IN LDT, 1, @DESNAM SEL, @EXCEP);IF EXCEPTION-THEN CALL-REPORT (@EXCEP);1971DOFOREVER;198.19920020220320520620820921121221421521621821922122222222222222222GET NAME:CALL GET LOAD FILE (@PATH NAME); /* May wait */LOAD FILE=DQ$ATTACH (@PATH NAME, @EXCEP);IF EXCEPTION THEN GOTO GET-NAME;CALL DQ$OPEN (LOAD FILE, READ, t,@EXCEP);IF EXCEPTION THEN CALL REPORT (@EXCEP);/* Read file header. */.ACTUAL=DQ$READ (LOAD FILE, @FILE HEADER, 1, @EXCEP);IF EXCEPTION THEN CALL REPORT (@EXCEP);/* Read loadable-module header */ACTUAL=DQ$READ (LOAD FILE, @MODULE HEADER,SIZE(MODULE HEADER)~ @EXCEP);IF EXCEPTION THEN CALL REPORT (@EXCEP);/* Process DESNAM section of OMF */CALL DQ$SEEK (LOAD FILE,2,MODULE HEADER.DESNAM LOC,@EXCEP); - -IF EXCEPTION THEN CALL REPORT (@EXCEP);CALL BUILD_DESNAM_TABLE (SECTION_SIZE(3));/* Tell OS to allocate an LDT */CALL RESERVE SLOTS (IN GDT, 4, @TASK SLOT, @EXCEP);IF EXCEPTION-THEN CALL-REPORT (@EXCEP);CALL CREATE LDT. (TASK SLOT, MODULE HEADER. DESCR COUNT,- @EXCEP) ; - -jF EXCEPTION THEN CALL REPORT (@EXCEP);/* Process DESCRP section */CALL DQ$SEEK (LOAD FILE,2,MODULE HEADER.DESCRP LOC,@EXCEP); - -Figure 11-6. Binding Loader (Cont'd.)11-22 121960-001
BINDING AND LOAD.INGPL/M-286 COMPILER 9~"-515 date PAGE. 9222 2224 2225 2226 2228 2229 2230 2231 2233 2234 2236 2237 2239 224" 2242 2243 2245 2IF EXCEPTION THEN CALL REPORT (@EXCEP);CALL LOAD_DESCRP;/* Process LODTXT section */CALL DQ$SEEK (LOAD FILE,2,MOD[)LE HEADER.LODTXT LOC,@EXCEP); -IF EXCEPTION THEN CALL REPORT (@EXCEP);CALL LOAD_SEGMENTS (SECTION_SIZE·(l»;CALL TRANSFER_REMAINDERS r/* Tell OS to create the new task */CALL CREATE TASK(TASK SLOT, @TSS, DEFAULT PRIORITY,- @EXCEP) ; r-IF EXCEPTION THEN CALL REPORT (@EXCEP);CALL DQ$CLOSE (LOAD FILE, @EXCEP);IF EXCEPTION THEN CALL REPORT (@EXCEP);CALL DQ$DETACH (LOAD FILE, @EXCEP)iIF EXCEPTION THEN CALL REPORT (@EXCEP);CALL FREE SEG (DESCRP SEL, @EXCEP);IF EXCE·PTION THEN CALL REPORT (@EXCEP) iCALL FREE SEG (DESNAM SEL, @EXCEP)iIF EXCEPTION THEN CALL REPORT (@EXCEP)iEND /* FOREVER */;II! * * ** *** * * ** * ** * * *,** *** .•.• * * ~* * * ** * * * * ** ** *.* ** ** *** ** * * *' /246 1 . END LOADER iMODULE· INFORMATION:CODE AREA SIZECONSTANT AREA SIZEVARIABLE AREA SIZEMAXIMUM STACK SIZE508 LINES READo PROGRAM WARNINGS" PROGRAM ERRORSDICTIONARY SUMMARY:"8B2Hfil""IHfil"FFH""I8H2226D1D255D24D·96KB MEMORY AVAILABLEllKB MEMORY USED (11%)"KB DISK SPACE USEDEND OF PL/M-286 COMPILATIONFigure 11-6. Binding Loader (Cont'd.)11-23 121960-001
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LITERATUREIn addition to the produc
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Intel Corporation makes no warranty
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PREFACEExternal LiteratureMany aspe
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Table of ContentsCHAPTER 1PageINTRO
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TABLE OF CONTENTSCHAPTER 9PageVIRTU
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TABLE OF CONTENTSLIST OF FIGURESFig
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Introduction to Protected 1Multitas
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INTRODUCTION TO PROTECTED MULTITASK
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inter INTRODUCTION TO PROTECTED MUL
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111'eI INTRODUCTION TO PROTECTED MU
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Using Hardware2Protection Features
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USING HARDWARE PROTECTION,FEATURESs
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interUSING HARDWARE PROTECTION FEAT
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USING HARDWARE PROTECTION FEATURES(
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USING HARDWARE PROTECTION FEATURES
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USING HARDWARE PROTECTION FEATUREST
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USING HARDWARE PROTECTION FEATURESo
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USING HARDWARE PROTECTION FEATURESL
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USING HARDWARE PROTECTION FEATUREST
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USING HARDWARE PROTECTION FEATURESE
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inl:el~USING HARDWARE PROTECTION FE
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IntelUSING HARDWARE PROTECTION FEAT
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IntelU~ING HARDWARE PROTECTION FEAT
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lSLDTFORMATRt;;SERV~~"O~iA~~.~ijij
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CHAPTER 3REAL MEMORY MANAGEMENTIn d
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REAL MEMORY MANAGEMENTIALLOCATEGATE
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interREAL MEMORY MANAGEMENTBEFOREAF
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REAL MEMORY MANAGEMENTGLOBAL DESCRI
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REAL MEMORY MANAGEMENTTable 3-1. Ac
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REAL MEMORY MANAGEMENTBEFOREI "FREE
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REAL MEMORY MANAGEMENTBEFOREI "FREE
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REAL MEMORY MANAGEMENTPL/M-286 COMP
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IIIIIIIIIIIIIIIIIIIIII
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II I telTASK MANAGEMENTCPUTASK REGI
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TASK MANAGEMENTIf the proc~sser, wh
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TASK MANAGEMENTUsually, termination
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TASK MANAGEMENTTASK XTSS TSS TSS TS
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TASK MANAGEMENTSCHEDULING POLICIEST
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TASK MANAGEMENTThe example in figur
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TASK MANAGEMENTREADY QUEUESBY PRIOR
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IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
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CHAPTER 5DATA SHARING, ALIASING, AN
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DATA SHARING, ALIASING, AND SYNCHRO
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interDATA SHARING, ALIASING, AND SV
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CHAPTER 6SIGNALS AND INTERRUPTSInte
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interSIGNALS AND INTERRUPTSlOTGOTTS
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SIGNALS AND INTERRUPTSTable 6-1. In
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SIGNALS AND INTERRUPTSSend interrup
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SIGNALS AND INTERRUPTSprocedure suc
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Handling Exception Conditions 7
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HANDLING EXCEPTION CONDITIONSError
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HANDLING EXCEPTION CONDITIONSAn exc
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HANDLING EXCEPTION CONDITIONSA few
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HANDLING EXCEPTION CONDITIONSAn ins
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CHAPTER 8INPUT /OUTPUTMany of the c
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INPUT /OUTPUTYou can still take adv
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INPUT /OUTPUT• Only the operating
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INPUT /OUTPUTtask the I/0 procedure
Page 153 and 154: CHAPTER 9VIRTUAL MEMORYThe memory l
Page 155 and 156: VIRTUAL MEMORYthose segments that a
Page 157 and 158: VIRTUAL MEMORY• Return the RAM sp
Page 159 and 160: VIRTUAL MEMORYReplacementThe operat
Page 161 and 162: System Initialization10
Page 163 and 164: CHAPTER 10SYSTEM INITIALIZATIONThe
Page 165 and 166: SYSTEM INITIALIZATIONStarting the f
Page 167 and 168: iAPX286 "ACRO ASSEMBLERLOCOBJEnter
Page 169 and 170: iAPX286 MACRO ASSEMBLEtEnter Protec
Page 171 and 172: iAPX286 MACRO ASSEMBLER·· Enter ~
Page 173 and 174: iAPX286 'UCRO USE148LER Ente,. P,.o
Page 175 and 176: iAPX286 MACRO ASSEMBLEREnt9~ P~otec
Page 177: iAPX286 MACRO ASSEMBLE~ INITIAL TAS
Page 181 and 182: CHAPTER 11BINDING AND LOADINGBindin
Page 183 and 184: BINDING AND LOADINGNamingThe names
Page 185 and 186: BINDING AND LOADING$ COMPACT (NUCLE
Page 187 and 188: interBINDING AND LOADINGsystem-IDiA
Page 189 and 190: BIND.ING AND LOADINGConverting a Pr
Page 191 and 192: BINDING AND LOADINGThe OMF of each
Page 193 and 194: interBINDING AND LOADINGsystem-IDiA
Page 195 and 196: BINDING AND LOADINGPL/M-2B6 COMPILE
Page 197 and 198: BINDING AND LOADI.NGPL/M-286 COMPIL
Page 199 and 200: BINDING AND LOADINGPL/M-286 COMPILE
Page 201: BINDING AND LOADINGPL/M-2B6 COMPILE
Page 205 and 206: interBINDING AND LOADINGPL/M-286 CO
Page 207 and 208: BINDING AND LOADINGPL/M-286 COMPILE
Page 209: Numerics Processor Extension 12
Page 212 and 213: NUMERICS PROCESSOR EXTENSIONMath Pr
Page 214 and 215: interNUMERICS PROCESSOR EXTENSION
Page 217: Extended Protection13
Page 220 and 221: EXTENDED PROTECTIONIndirect NamingT
Page 222 and 223: EXTENDED PROTECTIONanother procedur
Page 225: Glossary
Page 228 and 229: GLOSSARYbootloadable module: a modu
Page 230 and 231: GLOSSARYexception: a processor-dete
Page 232 and 233: GLOSSARYintersegment reference: a r
Page 234 and 235: GLOSSARYoutward call: the attempt t
Page 236 and 237: GLOSSARYscheduling state: one of se
Page 238 and 239: GLOSSARYvirtual address: an address
Page 240 and 241: INDEXES register, 2-17, 2-18, 2-21,
Page 242 and 243: INDEXpresent bit, 2-2, 2-3, 2-9, 5-
Page 245 and 246: interu.s. SALES OFFICESALAIWIA IlEQ
Page 247 and 248: interu.s. DISTRIBUTORSNEW YORK (C"n
Page 249 and 250: intJINTEL INTERNATIONAL SALES OFFIC
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iAPX 286 Operating System Writers Guide 1983

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