Table of Contents

VM370 System Programmers Guide (Rel6)

Table of Contents pages: 1 2 3 4

• Preface iii3
• Contents vii7
• INTRODUCTION TO DEBUGGING 321
• How to Use VM/370 Facilities to Debug 1836
• Summary of VM/370 Debugging Tools 3149
• Comparison of CP and C!VIS Facilities for Debugging 3757
• An Overview of VM/370 Commands that Can BeUsed for Debugging 3858
• Debugging CP on a Virtual Machine 4264
• CP Internal Trace Table 4264
• Reading CP Abend Dumps 4467
• • REASON FOR THE ABEND 4467
  • REGISTER USAGE 4669
  • SAVE AREA CONVENTIONS 4669
  • VIRTUAL AND REAL CONTROL BLOCK STATUS 4871
  • • VMBLOK 4871
    • Figure 9: CP control block relationships 4972
    • VCHBLOK 5174
    • VCUBLOK 5275
    • VDEVBLOK 5275
    • RCHBLOK 5477
    • RCUBLOK 5578
    • RDEVBLOK 5578
    • Figure 10. CP Device Classes, Types, Models, and Feature 5881
  • IDENTIFYING AND LOCATING A PAGEABLE MODULE 6184
  • VMDUMP RECORDS: FORMAT AND CONTENT 6184
• Debugging with CMS 6487
• • CMS Debugging Commands 6487
  • Nucleus Load Map 6689
  • Load Map 6891
  • Reading CMS Abend Dumps 6891
  • Figure 12. CMS Control Blocks 7093
• Part 2. Control Program (CP) 7396
• • VM/370 7598
  • • Introduction to the VM/370 Control Program 7598
    • • VIRTUAL MACHINE TIME MANAGEMENT 7699
      • VIRTUAL MACHINE STORAGE MANAGEMENT 7699
      • VIRTUAL MACHINE I/O MANAGEMENT 79102
      • SPOOLING FUNCTIONS 80103
      • SPOOL FILE RECOVERY 81104
      • CP COM~ANDS 82105
    • Program States 83106
    • Using Processor Resources 84107
    • Interruption Handling 86109
  • Performance Guidelines 87110
  • • General Information 88111
    • Virtual Machine I/O 89112
    • Paging Considerations 90113
    • VM/370 Performance Options 93116
    • VM/370Extended Co-ntro-I .. P-rog-ram Support (ECPS) 99122
  • Performance Observation and Analysis 107130
  • • Load Indicators 107130
    • The MONITOR Command 114137
    • LOAD ENVIRONMENTS OF VM/370 128151
  • Accounting Records 131154
  • • Accounting Records for Virtual Machine ResourceUsage 131154
    • Accounting Records for Dedicated Devices andTemporary Disk Space 131154
    • Accounting Records for LOGON, AUTOLOG, andLINK Journaling 132155
    • Accounting Records Created by the User 133156
    • Operational Notes 134157
    • User Accounting Options 134157
  • Generating Saved Systems 136159
  • • The NAMESYS Macro for Saved Systems 136159
    • Using the SAVESYS Command 138161
    • Shared Segments 139162
    • Discontiguous Saved Segments 139162
    • Shared Segment Protection 144167
  • The Virtual Machine Communication Facility 147170
  • • Figure14. Virtual Machine Communication Facility (VMCF) Subfunctions 148171
    • Using the Virtual Machine Communication Facility 149172
    • VMCF Protocol 152175
    • Descriptions of VMCF Subfunctions 157180
    • Invoking VMCF Subfunctions 163186
  • Special Message Facility 177200
  • VM/370 Use of the IBM 3850 MSS 178201
  • Timers In a Virtual Machine 183206
  • CP In Attached Processor Mode 186209
  • DIAGNOSE Instruction In a Virtual Machine 190213
  • • DIAGNOSE Code X'OO' -- StoreExtended-Identification Code 191214
    • DIAGNOSE Code X'04' -- Examine Real Storage 192215
    • DIAGNOSE Code X'08' -- Virtual Console Function 192215
    • DIAGNOSE Code X'OC' -- Pseudo Timer 194217
    • DIAGNOSE Code X'1 0' -- Release Pages 194217
    • DIAGNOSE Code X'14'Manipulation 195218
    • DIAGNOSE Code X'18' --Standard DASD I/O 198221
    • DIAGNOSE Code X'1 C' -- Clear Error RecordingCylinders 199222
    • DIAGNOSE Code X'20' -- General I/O 199222
    • DIAGNOSE Code X'24' -- Device Type and Features 200223
    • DIAGNOSE Code X'28' -- Channel ProgramModification 202225
    • DIAGNOSE Code X'2C' -- Return DASD Start ofLOGREC 203226
    • DIAGNOSE Code X'30' -- Read One Page of lOGRECData 204227
    • DIAGNOSE Code X'34' -- Read System Dump SpoolF i I e 204227
    • DIAGNOSE Code X'38' -- Read System Symbol Table 205228
    • DIAGNOSE Code X'3C' -- VM/370 Directory 205228
    • DIAGNOSE Code X'48' -- Issue SVC 76 From a Second, Level VM/370 Virtual Machine 205228
    • DIAGNOSE Code X'4C' -- Generate AccountingRecords for the Virtual User 205228
    • DIAGNOSE Code X'50' -- Save the 370X ControlProgram Image 209232
    • DiAGNOSE Code X'54' -- Control the Function of thePA2 Function Key 209232
    • DIAGNOSE Code X'58' -- 3270 Virtual ConsoleInterface 209232
    • DIAGNOSE Code X'5C' -- Error Message Editing 210233
    • DIAGNOSE Code X'60' -- Determining the VirtualMachine Storage Size 211234
    • DIAGI\JOSE Code X'64' -- Finding; Loading!' andPurging a Named Segment 211234
    • DIAGNOSE Code X'68' -- Virtual MachineCommunication Facility (VMCF) 213236
    • DIAGNOSE Code X'74' -- Saving or Loading a 3800Named System 214237
    • DIAGNOSE Code X'78' -- MSS Communication 215238
    • DIAGNOSE Code X'84' -- Directory update in place 216239
  • CP Conventions 223246
  • • CP Coding Conventions 223246
    • CP Loadlist Requirements 226249
  • How to Add a Console Function to CP 227250
  • Print Buffers and Forms Control 227250
  • • Forms Control Buffer 234257
    • Adding New Print Buffer Images 229252
    • 3203 Model 4 and 5 Printer Forms Control and PrintBuffer 235258
  • IBM 3800 Pri nting Subsystem 237260
  • • Using the 3800 Printer as a Dedicated Device 238261
    • Using the 3800 Printer as a Real Spooling Device 239262
  • Suppressing Passwords Entered on theCommand-Line 242265
  • J ou·rna ling LOGO N, AUTO LOG, and LI N KCommands 241264
• Part 3. Conversational Monitor System (CMS) 243266
• • Introduction to CMS 244267
  • Interrupt Handling In eMS 247270
  • Functional Information 252275
  • • Register Usage 252275
    • Structure of DMSN UC 252275
    • Structure of eMS Storage 253276
    • Figure 26. Devices Supported by a CMS Virtual Machine 254277
    • fiqure 27. CM S Storaqe Map 257280
    • Free Storage Management 255278
    • • GETMAIN FREE STORAGE MANAGEMENT 256279
      • STRINIT 256279
      • DMSFREE 259282
      • DMSFRET 263286
      • DMSFRES 264287
    • CMS Handling of PSW Keys 267290
    • CMS SVC Handling 268291
    • • SVC 202 269292
      • SVC 203 269292
      • SEARCH HIERARCHY FOR SVC 202 271294
      • USER AND TRANSIENT PROGRAM AREAS 275298
    • CMS Interface for Display Terminals 279302
    • How to Add a Command or EXEC Procedure toeMS 281304
    • OS Macro Simulation under eMS 282305
    • DOS /VS Support under eMS 298321
    • • Hardware Devices Supported 299322
      • eMS Support of DOS/VS Functions 299322
      • DOS/VS Supervisor and I/O Macros Supported by eMS/DOS 305328
      • DOS/VS Transient Routines 320343
      • EXCP Support in CMS/DOS 321344
      • DOS/VS Supervisor Control Blocks Simulated byCMS/DOS 322345
      • User Considerations and Responsibilities 322345
      • DOS/VS System Generation and UpdatingConsiderations 322345
      • VM/370 Directory Entries 323346
      • eMS/DOS Storage Requirements 324347
      • When the DOS/VS System must be Online 324347
      • Performance 325348
      • Execution Considerations and Restrictions 325348
      • eMS Support for OS and DOS VSAMFunctions 326349
      • Data Set Compatibility Considerations 328351
      • ISAM Interface Program (liP) 328351
    • Saving the CMS System 329352
    • • The CMSSEG Discontiguous Saved Segment 329352
      • Saved System Restrictions for eMS 330353
      • CMS Batch Facility 332355
      • Auxiliary Directories 335358
  • Assembler Virtual Storage Requirements 339362
  • Overlay Structures 339362
• Part 4. Remote Spooling CommunicationsSubsystem (RSCS) 343366
• • Introduction to RSCS 345368
  • VM/370 Spool System Interface 346369
  • RSCS Command Language 346369
  • Structure of RSCS Virtual Storage 348371
  • RSCS Supervisor 349372
  • Functional Information 351374
  • Rses Message Handling 354377
  • Interruption Handling 354377
  • Logging I/O Activity 356379
• Appendixes 359382
• • Appendix A: System/370 Information 361384
  • Appendix B: M U L TI-LEAVI N G 364387
  • Appendix C: VM Monitor Tape Format andContent 373396
• Index 383406
• stupid page numbers iii3
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