HLASM: V1R6 Language Ref

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SETB instructionv A logical expression can contain up to 18 logical operators. The relational andother operators used by the arithmetic and character expressions in relations donot count toward this total.v Up to 255 levels of nested parentheses are allowed.v Absolute ordinary symbols specified in logical expressions must be definedbefore the logical expression is encountered.v The assembler determines the type of a logical relation by the first comparand. Ifthe first comparand is a character expression that begins with a single quotationmark, then the logical relation is a character relation, otherwise the assemblertreats it as an arithmetic relation.┌───────────┐│││Logical¹ ││Expression │││└─────┬─────┘│ Can be any of├─────────────┬─────────────────────────────────────────────────┐ Logical Operators Allowed ┌─────┴─────┐ ┌─────┴─────┬───────────┬───────────┐ ┌───────────┬─────┴─────┐ OR Intersection│ │ │ │ OR │ │ │ │ │ AND Union│ Logical² │ │Logical² │ OR NOT │ Logical │ │ NOT │Logical² │ NOT Negation│ Term │ │Expression │ AND │ Term │ │ │Expression │ XOR Exclusive OR│ │ │ │ AND NOT │ │ │ │ ││ │ │ │ XOR │ │ │ │ ││ │ │ │ XOR NOT │ │ │ │ │└─────┬─────┘ └───────────┴───────────┴───────────┘ └───────────┴───────────┘│ Can be any of├─────────────┬─────────────┬─────────────┬─────────────┬─────────────┬─────────────┐ ┌─────┴─────┐ ┌─────┴─────┐ ┌─────┴─────┐ ┌─────┴─────┐ ┌─────┴─────┐ ┌─────┴─────┐ ┌─────┴─────┐│ │ │ SETB² │ │ │ │ │ │ │ │ Predefined│ │ ││ Logical² │ │ Variable │ │Arithmetic²│ │ 0² │ │ 1² │ │ Absolute │ │ Logical² ││ Relation │ │ Symbol │ │Value │ │ │ │ │ │ Ordinary │ │ Function ││ │ │ │ │ │ │ │ │ │ │ Symbol │ │ │└─────┬─────┘ └───────────┘ └───────────┘ └───────────┘ └───────────┘ └───────────┘ └───────────┘│ Can be any of├─────────────────────────────────────────┐┌─────┴─────┐┌─────┴─────┐│ │ │ ││Arithmetic │ │ Character ││Relation │ │ Relation ││ │ │ │└─────┬─────┘└─────┬─────┘│ │ Relational Operators Allowed Which is Which is┌─────┴─────┬───────────┬───────────┐ ┌─────┴─────┬───────────┬───────────┐ EQ Equal│ │ EQ, NE │ │ │ │ EQ, NE │ │ NE Not equal│Arithmetic │ LE, LT │Arithmetic │ │ Character³│ LE, LT │ Character³│ LE Less than or equal│Comparand │ GE, GT │Comparand │ │ Comparand │ GE, GT │ Comparand │ LT Less than│ │ │ │ │ │ │ │ GE Greater than or equal└─────┬─────┴───────────┴───────────┘ └─────┬─────┴───────────┴───────────┘ GT Greater than││ Which can be Can be any of│├─────────────┬─────────────┬─────────────────┐│ ┌─────┴─────┐ ┌─────┴─────┐ ┌─────┴─────┐ ┌─────┴──────────┐ ┌─────┴─────┐│ │ │ │ │ │ │ Type Attribute │ │Character ││Arithmetic │ │Character │ │ Substring │ │ or Operation │ │Exp. and ││Expression │ │Expression │ │ Notation │ │ Code │ │Substring ││ │ │ │ │ │ │ Reference⁴ │ │Notation │└───────────┘ └───────────┘ └───────────┘ └────────────────┘ └───────────┘Notes:1. Outermost expression must be enclosed in parentheses in SETB and AIF instructions.2. Optional parentheses around terms and expressions at this level.3. Must be in the range 0 through 1024 characters.4. Must stand alone and not be enclosed in single quotation marks.Figure 41. Defining logical expressions360 HLASM: V1R6 Language Ref
SETB instruction|||Subscripted SETB symbolsThe SETB symbol in the name field can be subscripted. If the same SETB symbolhas not been previously declared in a GBLB or LCLB instruction with an allowabledimension, then the symbol is implicitly declared as a local SETB array variable.The assembler assigns the binary value explicitly specified, or implicit in thelogical expression present in the operand field, to the position in the declared arraygiven by the value of the subscript. The subscript expression must not be 0 or havea negative value.Logical (SETB) expressionsYou can use a logical expression to assign a binary value to a SETB symbol. Youcan also use a logical expression to represent the condition test in an AIFinstruction. This use lets you code a logical expression whose value (0 or 1) variesaccording to the values substituted into the expression and thereby determinewhether or not a branch is to be taken.Figure 41 on page 360 defines a logical expression.It is important to note that logical expressions contain unquoted spaces that do notterminate the operand field. This is called “logical-expression format”, and suchexpressions are always enclosed in parentheses.A logical expression can consist of a logical expression and a logical term separatedby a logical operator delimited by spaces. The logical operators are:AND Format: Logical-expressionOperands: BinaryOutput: (bexpr1 AND bexpr2) has value 1, if each logical expressionevaluates to 1, otherwise the value is 0.ExampleAfter the following statements &VAR contains the arithmetic value 0.Name Operation Operand&OP1 SETB 1&OP2 SETB 0&VAR SETB (&OP1 AND &OP2)AND NOTFormat: Logical-expressionOperands: BinaryOutput: The value of the second logical term is inverted, and theexpression is evaluated as though the AND operator was specified.NOTExample(1 AND NOT 0) is equivalent to (1 AND 1).Format:Logical-expression, function-invocationOperands: BinaryOutput: NOT(bexp) inverts the value of the logical expression.Chapter 9. How to write conditional assembly instructions 361
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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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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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Sublists in operandsTable 48. Relat
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Values in operandsUnquotedSpecial2.
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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 372 and 373: SETA instructionAfter the following
Page 374 and 375: SETA instruction10. An arithmetic e
Page 376 and 377: SETA instructionarithmetic value
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
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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
Page 416 and 417: Assembler instructions and statemen
Page 422 and 423: Summary of constantsTable 65. Summa
Page 424 and 425: Macro and conditional assembly lang
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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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