HLASM: V1R6 Language Ref

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&SYSNDX System Variable SymbolStatement 8 is the 108th macro instruction processed. Therefore, each occurrence of&SYSNDX is replaced by the number 0108. For example, statement 6 is used tocreate the unique name B0108.When statement 5 is used to process the 108th macro instruction, statement 5becomes the 109th macro instruction processed. Therefore, each occurrence of&SYSNDX is replaced by the number 0109. For example, statement 1 is used tocreate the unique name A0109.&SYSNEST System Variable SymbolUse &SYSNEST to obtain the current macro instruction nesting level.The local-scope system variable symbol &SYSNEST is assigned a read-only valueeach time a macro definition is called from a source module.The value assigned to &SYSNEST is a number from 1 to 99999999. No leadingzeros are generated as part of the number. When a macro is called from open code,the value assigned to &SYSNEST is the number 1. Each time a macro definition iscalled by an inner macro instruction, the value assigned to &SYSNEXT isincremented by 1. Each time an inner macro exits, the value is decremented by 1.Notes:1. The value of the type attribute of &SYSNEST (T'&SYSNEST) is always N.2. The value of the count attribute (K'&SYSNEST) is equal to the number of digitsassigned.The following example shows the values assigned to &SYSNEST:MACROOUTERDC A(&SYSNEST) Statement 1INNER1 Statement 2INNER2 Statement 3MENDMACROINNER1DC A(&SYSNEST) Statement 4INNER2 Statement 5MENDMACROINNER2DC A(&SYSNEST) Statement 6MEND--------------------------------------------------------------------OUTER Statement 7+ DC A(1)+ DC A(2)+ DC A(3)+ DC A(2)Statement 7 is in open code. It calls the macro OUTER. &SYSNEST is assigned avalue of 1 which is substituted in statement 1.Statement 2, within the macro definition of OUTER, calls macro INNER1. The valueassigned to &SYSNEST is incremented by 1. The value 2 is substituted for&SYSNEST in statement 4.280 HLASM: V1R6 Language Ref
&SYSNEST System Variable SymbolStatement 5, within the macro definition of INNER1, calls macro INNER2. The valueassigned to &SYSNEST is incremented by 1. The value 3 is substituted for&SYSNEST in statement 6.When the macro INNER2 exits, the value assigned to &SYSNEST is decremented by1. The value of &SYNEST is 2.When the macro INNER1 exits, the value assigned to &SYSNEST is decremented by1. The value of &SYSNEST is 1.Statement 3, within the macro definition of OUTER, calls macro INNER2. The valueassigned to &SYSNEST is incremented by 1. The value 2 is substituted for&SYSNEST in statement 6.&SYSOPT_DBCS System Variable SymbolYou can use &SYSOPT_DBCS to determine if the DBCS assembler option wassupplied for the assembly of your source module. &SYSOPT_DBCS is a Booleansystem variable symbol, and has a global scope.If the DBCS assembler option was specified, &SYSOPT_DBCS is assigned a valueof 1. If the DBCS assembler option was not specified, &SYSOPT_DBCS is assigneda value of 0.For more information about the DBCS assembler option, see the section “DBCS” inthe HLASM Programmer’s Guide.Notes:1. The value of the type attribute of &SYSOPT_DBCS (T'&SYSOPT_DBCS) isalways N.2. The value of the count attribute (K'&SYSOPT_DBCS) is always 1.&SYSOPT_OPTABLE System Variable SymbolUse &SYSOPT_OPTABLE to determine the value that was specified for theOPTABLE assembler option. &SYSOPT_OPTABLE has a global scope.The value that was specified for the OPTABLE assembler option indicates whichoperation code table the assembler has loaded, and is using.For more information about the OPTABLE assembler option, see the section“OPTABLE” in the HLASM Programmer’s Guide).Notes:1. The value of the type attribute of &SYSOPT_OPTABLE (T'&SYSOPT_OPTABLE) is always U.2. The value of the count attribute (K'&SYSOPT_OPTABLE) is the number ofcharacters assigned.&SYSOPT_RENT System Variable SymbolUse &SYSOPT_RENT to determine if the RENT assembler option was specified forthe assembly of your source module. The RENT option instructs the assembler tocheck for possible coding violations of program reenterability. &SYSOPT_RENT isa Boolean system variable symbol, and has a global scope.Chapter 7. How to specify macro definitions 281
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High Level Assembler for z/OS & z/V
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Note!Before using this information
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|Open code . . . . . . . . . . . .
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Programming interface informationOr
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IBM High Level Assembler for z/OS &
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Syntax notationFormat▌A▐ ▌B
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Double-byte character set notationx
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Summary of changesxvi HLASM: V1R6 L
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Chapter 1. IntroductionA computer c
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Assembler languagev Macro instructi
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Assembler programProcessingConditio
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Coding made easierCoding made easie
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Chapter 2. Coding and structureThis
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Character setTable 4. Examples usin
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Assembler language coding conventio
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Assembler language structureThe mac
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Assembler language structureMachine
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Assembler language structureConditi
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Mnemonic tags|||||||||For example,
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Terms, literals, and expressions- T
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Terms, literals, and expressionsAss
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Terms, literals, and expressionsUsi
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Terms, literals, and expressions|||
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Terms, literals, and expressionsz/V
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Terms, literals, and expressionsTab
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Terms, literals, and expressions1.
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Terms, literals, and expressions1.
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Terms, literals, and expressions┌
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Terms, literals, and expressionsA-Y
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Chapter 3. Program structures and a
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SourcemoduleA source module is comp
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Beginning of a source modulev The S
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Beginning of a source moduleReferen
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Beginning of a source moduleNote: T
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Beginning of a source moduleClass l
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Beginning of a source modulez/VM an
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AddressingBase Address Definition:
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QualifiedDependentaddressingQualifi
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Addressingz/VM and z/OSWhen you spe
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Addressing..EX_SYM DC V(EXMOD1) Add
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AddressingSee the appendix “Objec
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Part 2. Machine and assembler instr
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Chapter 4. Machine instruction stat
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Input/output operationsThe input or
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Branching with extended mnemonic co
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Statement formatsSymbolic operation
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Operand entriesRegistersYou can spe
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Operand entriesv Explicitly—in a
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Operand entriesImmediateused by the
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Examples of coded machine instructi
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Chapter 5. Assembler instruction st
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*PROCESS statementstatement, follow
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ACONTROL instruction►►NOCOMPAT,
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ACONTROL instructionFLAG(PAGE0)inst
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ACONTROL instruction|||may be fetch
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AINSERT instruction►►sequence_s
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ALIAS instruction||||||The alias_st
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AMODE instructionCATTR instruction
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CATTR instructionRMODE(ANY)The text
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CCW and CCW0 instructionssupport 31
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CEJECT instructionIf number of line
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CNOP instructionAfter the BALR inst
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COPY instructioncopied from either
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CSECT instructionsame section name
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CXD instructionZETA: the resulting
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DC instruction10EBP(7)L2’12’the
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DC instructionTable 17. Length attr
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DC instruction4. Double-byte data i
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DC instructionTable 19. Type codes
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DC instructionYou may omit the modi
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DC instructionfirst constant to be
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DC instructionTable 21. Specifying
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DC instruction—Character constant
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DC instruction—Character constant
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DC instruction—Graphic constantTa
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DC instruction—Fixed-point consta
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DC instruction—Fixed-point consta
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DC instruction—Decimal constantsD
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DC instruction—Address constants|
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DC instruction—Address constantsT
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DC instruction—Offset constantIn
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DC instruction—Hexadecimal floati
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DC instruction—Decimal floating-p
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Syntax of binary, decimal, and hexa
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DC instruction—Binary floating-po
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DROP instructionLabeledDependentIf
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DS instructionv An ordinary symbolv
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DS instructionthe data that follows
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DSECT instructionTo effect referenc
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DXD instructionnominal_valueis the
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END instructionNotes:1. If the END
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EQU instruction||||to the symbol in
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EQU instruction|FPR Register - Floa
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EXITCTL instructionSee the section
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ISEQ instruction►►sequence_symb
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LOCTR instructionA LOCTR name may b
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LTORG instructionAddressingDuplicat
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MNOTE instructionNote: The maximum
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OPSYN instruction||||||v An operati
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ORG instruction||||||||If symbol de
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ORG instructionThat is, the ORG ins
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PRINT instructionPRINT instructionT
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PRINT instructionexceeded the macro
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PUNCH instructionv A pair of single
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REPRO instruction||Notes:1. The ide
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RSECT instructionThe beginning of a
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TITLE instructionv Provides heading
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TITLE instructionIf the TITLE state
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USING instructioninstructions suppo
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USING instructionby means of anothe
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USING instructionLabeled USING inst
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USING instructionDomain of a labele
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USING instructionIf the dependent U
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XATTR instructionXATTR instruction
Page 248 and 249: XATTR instructionSCOPE(MODULE), abb
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Page 252 and 253: Name entry . . . . . . . . . . . .
Page 254 and 255: Macro definitionA macro definition
Page 256 and 257: Macro instructionThe macro instruct
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Page 260 and 261: Where to define a macro in a source
Page 262 and 263: Prototype statement|||||specified o
Page 264 and 265: Model statementsEach field or subfi
Page 266 and 267: Model statementsTable 37. Rules for
Page 268 and 269: Model statements||v Variable symbol
Page 270 and 271: Symbolic parametersPositionalKeywor
Page 272 and 273: Other conditional assembly instruct
Page 274 and 275: AREAD instruction||If no operand is
Page 276 and 277: MEXIT instructionThe MEXIT instruct
Page 278 and 279: System variable symbols1 macro2 get
Page 280 and 281: &SYSADATA_MEMBER System Variable Sy
Page 282 and 283: &SYSDATC System Variable SymbolYYYY
Page 284 and 285: &SYSECT System Variable Symbolv Sta
Page 286 and 287: &SYSIN_MEMBER System Variable Symbo
Page 288 and 289: &SYSLIB_DSN System Variable SymbolS
Page 290 and 291: &SYSLIN_DSN System Variable SymbolE
Page 292 and 293: &SYSLIST System Variable Symbolposi
Page 294 and 295: &SYSLOC System Variable Symbolinstr
Page 296 and 297: &SYSNDX System Variable Symbol1 MAC
Page 300 and 301: &SYSOPT_RENT System Variable Symbol
Page 302 and 303: &SYSPRINT_DSN System Variable Symbo
Page 304 and 305: &SYSPUNCH_DSN System Variable Symbo
Page 306 and 307: &SYSSEQF System Variable Symbol1. I
Page 308 and 309: &SYSTEM_ID System Variable SymbolNo
Page 310 and 311: &SYSTERM_VOLUME System Variable Sym
Page 312 and 313: &SYSVER System Variable Symbol294 H
Page 314 and 315: Macro instruction format|name_entry
Page 316 and 317: Macro instruction formatOperandYou
Page 318 and 319: Macro instruction formatAny keyword
Page 320 and 321: Macro instruction formatparameters
Page 322 and 323: Sublists in operandsTable 48. Relat
Page 324 and 325: Values in operandsUnquotedSpecial2.
Page 326 and 327: Values in operands’SPACES ALLOWED
Page 328 and 329: Levels of macro call nestingLevels
Page 330 and 331: Levels of macro call nestingCOMPAT(
Page 332 and 333: Levels of macro call nesting&SYSSEQ
Page 334 and 335: SET symbolsSET symbolsSET symbols a
Page 336 and 337: SET symbolsTable 50. Features of SE
Page 338 and 339: SET symbolspreceding 999999 element
Page 340 and 341: Data attributesTable 51. Data attri
Page 342 and 343: Data attributesThe values of attrib
Page 344 and 345: Data attributesV R-, V-type address
Page 346 and 347: Data attributes|||||||||Notes:1. Or
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Data attributesv If the first opera
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Data attributesCount attribute (K')
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Data attributes||||||defined attrib
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Sequence symbolsparameter wherever
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LookaheadSequencelater defined by O
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GBLA, GBLB, and GBLC instructionsGB
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LCLA, LCLB, and LCLC instructions,
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Assigning values to SET symbolsLogi
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Assigning values to SET symbolsTabl
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SETA instructionTable 58. Variable
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SETA instructionB2A(’’) has val
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SETA instruction|||||||||||||||||||
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SETA instructionAfter the following
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SETA instruction10. An arithmetic e
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SETA instructionarithmetic value
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SETB instructionv A logical express
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SETB instructionOR Format: Logical-
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SETC instructionSETCinstructionThe
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SETC instruction|LCLC &C1,&C2LCLC &
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Substring notationv When e2 has a v
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Substring notation||||ExamplesA2D(0
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Substring notationC2X Format: Funct
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Substring notationSuppose the SETC
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Substring notationX2C(’’) has v
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Substring notationFor example, eith
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Substring notationStatement 1 assig
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SETAF instruction►► variable_sy
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AIF instructionsequence_symbolis a
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AIF instructionAIFB—synonym of th
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ACTR instruction►►sequence_symb
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MHELP optionsparameters are dumped
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Assembler instructions and statemen
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Summary of constantsTable 65. Summa
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Macro and conditional assembly lang
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Standard character set code tableHe
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Standard character set code tableHe
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NoticesPURPOSE. Some states do not
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z/VM: CP Planning and Administratio
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ALIAS instruction 108maximum operan
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comment statements (continued)ordin
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GG-type graphic constant 144GBLA in
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macro instructions (continued)opera
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eference constant (R) 154reference
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UUHEADPRINT instruction 206unary op
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