HLASM: V1R6 Language Ref

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SETA instructionAfter the following statements &VAR contains the arithmetic value +40.Name Operation Operand&OP1 SETA 10&OP2 SETA 2&VAR SETA (&OP1 SLL &OP2)SRA Format: Logical-expressionOperands: ArithmeticOutput: The 31-bit numeric part of the signed first operand is shifted rightthe number of bits specified in the rightmost six bits of the secondoperand. The sign of the first operand remains unchanged. Bits shifted outof bit position 31 are lost. Bits equal to the sign are used to fill the vacatedbit positions on the left.ExamplesAfter the following statements &VAR contains the arithmetic value +2.Name Operation Operand&OP1 SETA 10&OP2 SETA 2&VAR SETA (&OP1 SRA &OP2)After the following statements &VAR contains the arithmetic value −1.Name Operation Operand&OP1 SETA -344&OP2 SETA 40&VAR SETA (&OP1 SRA &OP2)Compare this result with the result in the second example under SRLbelow.SRL Format: Logical-expressionOperands: ArithmeticOutput: The 32-bit first operand is shifted right the number of bitsspecified in the rightmost six bits of the second operand. Bits shifted out ofbit position 31 are lost. Zeros are used to fill the vacated bit positions onthe left.ExamplesAfter the following statements &VAR contains the arithmetic value +2.Name Operation Operand&OP1 SETA 10&OP2 SETA 2&VAR SETA (&OP1 SRL &OP2)After the following statements &VAR contains the arithmetic value 0.Name Operation Operand&OP1 SETA -344&OP2 SETA 40&VAR SETA (&OP1 SRL &OP2)X2A Format: Function-invocationOperands: Character354 HLASM: V1R6 Language Ref
SETA instructionOutput: X2A(’hexstring’) converts a character string argument containinghexadecimal digits to an arithmetic value.v If the character string contains fewer than 8 characters, it is paddedinternally on the left with ’0’ characters.v Error conditions are detected if the argument contains invalid characters,or if the argument length exceeds 8 characters, generating the messageASMA214E.v Null argument strings return zero.The result of the X2A function is the same as&value SETA X’hexstring’except that null strings are allowed by X2A but not by SETA.ExamplesX2A(’00000101’) has value 257X2A(’C1’) has value 193X2A(’’) has value 0X2A(’FFFFFFF0’) has value -16XOR Format: Logical-expressionOperands: ArithmeticOutput: Each bit position in the result is set to 1 if the corresponding bitpositions in the two operands are unlike, otherwise the result bit is set to 0.Example After the following statements &VAR contains the arithmetic value+8.Name Operation Operand&OP1 SETA 10&OP2 SETA 2&VAR SETA (&OP1 XOR &OP2)Rules for coding arithmetic expressions: The following is a summary of codingrules for arithmetic expressions:1. Unary (operating on one value) operators and binary (operating on twovalues) operators are allowed in arithmetic expressions.2. An arithmetic expression can have one or more unary operators preceding anyterm in the expression or at the beginning of the expression. The unaryoperators are + (positive) and − (negative).3. The binary operators that can be used to combine the terms of an expressionare + (addition), − (subtraction), * (multiplication), and / (division).4. An arithmetic expression must not begin with a binary operator, and it mustnot contain two binary operators in succession.5. An arithmetic-valued function is a term.6. An arithmetic expression must not contain two terms in succession.7. An arithmetic expression must not contain a decimal point. For example,123.456 is not a valid arithmetic term, but 123 is.8. An arithmetic expression must not contain spaces between an operator and aterm, nor between two successive operators except for built-in functions usingthe “logical-expression format” described at “Logical (SETB) expressions” onpage 361.9. Ordinary symbols specified in arithmetic expressions must be defined beforethe arithmetic expression is encountered, and must have an absolute value.Chapter 9. How to write conditional assembly instructions 355
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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
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XATTR instructionSCOPE(MODULE), abb
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Name entry . . . . . . . . . . . .
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Macro definitionA macro definition
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Macro instructionThe macro instruct
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240 HLASM: V1R6 Language Ref
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Where to define a macro in a source
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Prototype statement|||||specified o
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Model statementsEach field or subfi
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Model statementsTable 37. Rules for
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Model statements||v Variable symbol
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Symbolic parametersPositionalKeywor
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Other conditional assembly instruct
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AREAD instruction||If no operand is
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MEXIT instructionThe MEXIT instruct
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System variable symbols1 macro2 get
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&SYSADATA_MEMBER System Variable Sy
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&SYSDATC System Variable SymbolYYYY
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&SYSECT System Variable Symbolv Sta
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&SYSIN_MEMBER System Variable Symbo
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&SYSLIB_DSN System Variable SymbolS
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&SYSLIN_DSN System Variable SymbolE
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&SYSLIST System Variable Symbolposi
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&SYSLOC System Variable Symbolinstr
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&SYSNDX System Variable Symbol1 MAC
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&SYSNDX System Variable SymbolState
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&SYSOPT_RENT System Variable Symbol
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&SYSPRINT_DSN System Variable Symbo
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&SYSPUNCH_DSN System Variable Symbo
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&SYSSEQF System Variable Symbol1. I
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&SYSTEM_ID System Variable SymbolNo
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&SYSTERM_VOLUME System Variable Sym
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&SYSVER System Variable Symbol294 H
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Macro instruction format|name_entry
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Macro instruction formatOperandYou
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Macro instruction formatAny keyword
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Macro instruction formatparameters
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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
Page 348 and 349: Data attributesv If the first opera
Page 350 and 351: Data attributesCount attribute (K')
Page 352 and 353: Data attributes||||||defined attrib
Page 354 and 355: Sequence symbolsparameter wherever
Page 356 and 357: LookaheadSequencelater defined by O
Page 358 and 359: GBLA, GBLB, and GBLC instructionsGB
Page 360 and 361: LCLA, LCLB, and LCLC instructions,
Page 362 and 363: Assigning values to SET symbolsLogi
Page 364 and 365: Assigning values to SET symbolsTabl
Page 366 and 367: SETA instructionTable 58. Variable
Page 368 and 369: SETA instructionB2A(’’) has val
Page 370 and 371: SETA instruction|||||||||||||||||||
Page 374 and 375: SETA instruction10. An arithmetic e
Page 376 and 377: SETA instructionarithmetic value
Page 378 and 379: SETB instructionv A logical express
Page 380 and 381: SETB instructionOR Format: Logical-
Page 382 and 383: SETC instructionSETCinstructionThe
Page 384 and 385: SETC instruction|LCLC &C1,&C2LCLC &
Page 386 and 387: Substring notationv When e2 has a v
Page 388 and 389: Substring notation||||ExamplesA2D(0
Page 390 and 391: Substring notationC2X Format: Funct
Page 392 and 393: Substring notationSuppose the SETC
Page 394 and 395: Substring notationX2C(’’) has v
Page 396 and 397: Substring notationFor example, eith
Page 398 and 399: Substring notationStatement 1 assig
Page 400 and 401: SETAF instruction►► variable_sy
Page 402 and 403: AIF instructionsequence_symbolis a
Page 404 and 405: AIF instructionAIFB—synonym of th
Page 406 and 407: ACTR instruction►►sequence_symb
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Page 410 and 411: MHELP optionsparameters are dumped
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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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