HLASM Language Reference

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Contents Source Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 | Sections, Elements, and Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 | Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Reference Control Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 | Classes (MVS and CMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 | Parts (MVS and CMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Location Counter Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Addressing within Source Modules: Establishing Addressability . . . . . . . . 64 Base Register Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Qualified Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Dependent Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Relative Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Literal Pools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Establishing Residence and Addressing Mode . . . . . . . . . . . . . . . . . . 68 Symbolic Linkages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 External Symbol Dictionary Entries . . . . . . . . . . . . . . . . . . . . . . . . 72 | Summary of Source and Object Program Structures . . . . . . . . . . . . . . 73 Part 2. Machine and Assembler Instruction Statements . . . . . . . . . . . . . . . . . . 75 Chapter 4. Machine Instruction Statements . . . . . . . . . . . . . . . . . . . 78 General Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Decimal Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Floating-Point Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Control Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Input/Output Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Branching with Extended Mnemonic Codes . . . . . . . . . . . . . . . . . . . . . 80 | Alternative Mnemonics for some Branch Relative Instructions . . . . . . . . . 83 Statement Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Symbolic Operation Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Operand Entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Lengths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Immediate Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 Examples of Coded Machine Instructions . . . . . . . . . . . . . . . . . . . . . . 91 RI Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 RR Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 RS Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 RSI Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 RX Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 SI Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 SS Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 Chapter 5. Assembler Instruction Statements . . . . . . . . . . . . . . . . . 100 64-bit Addressing Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 *PROCESS Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 ACONTROL Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 ADATA Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 AINSERT Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 ALIAS Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 AMODE Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 iv HLASM V1R5 Language Reference
Contents CATTR Instruction (MVS and CMS) . . . . . . . . . . . . . . . . . . . . . . . . . 112 CCW and CCW0 Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 CCW1 Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 CEJECT Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118 CNOP Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119 COM Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121 COPY Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122 CSECT Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123 CXD Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 DC Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 Rules for DC Operand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 General Information About Constants . . . . . . . . . . . . . . . . . . . . . . . 129 Padding and Truncation of Values . . . . . . . . . . . . . . . . . . . . . . . . . 130 Subfield 1: Duplication Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . 132 Subfield 2: Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 Subfield 3: Type Extension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 Subfield 4: Program type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 Subfield 5: Modifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136 Subfield 6: Nominal Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 DROP Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172 DS Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 DSECT Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178 DXD Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180 EJECT Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181 END Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182 ENTRY Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183 EQU Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184 Using Conditional Assembly Values . . . . . . . . . . . . . . . . . . . . . . . . 187 EXITCTL Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187 EXTRN Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189 ICTL Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189 ISEQ Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190 LOCTR Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191 LTORG Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193 Literal Pool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194 Addressing Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195 Duplicate Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195 MNOTE Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196 OPSYN Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198 ORG Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 POP Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204 PRINT Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204 Process Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208 PUNCH Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208 PUSH Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209 REPRO Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210 RMODE Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211 RSECT Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212 SPACE Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213 START Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214 TITLE Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215 USING Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218 How to Use the USING Instruction . . . . . . . . . . . . . . . . . . . . . . . . 219 Base Registers for Absolute Addresses . . . . . . . . . . . . . . . . . . . . . . 220 Contents v
Page 1: High Level Assembler for MVS & VM &
Page 4 and 5: Note! Before using this information
Page 8 and 9: Contents Ordinary USING Instruction
Page 10 and 11: Contents Sublists in Operands . . .
Page 12 and 13: About this Manual This manual descr
Page 14 and 15: IBM High Level Assembler for MVS &
Page 16 and 17: | The Internet. You can access IBM
Page 18 and 19: ▌C▐ The item referred to by ▌
Page 20 and 21: Miscellany The ASCII translation t
Page 22 and 23: Part 1. Assembler Language—Struct
Page 24 and 25: Language Compatibility Language Com
Page 26 and 27: Assembler Program Assembler Program
Page 28 and 29: Relationship of Assembler to Operat
Page 30 and 31: Coding Made Easier Linkage between
Page 32 and 33: Character Set Compatibility with Ea
Page 34 and 35: Assembler Language Coding Conventio
Page 42 and 43: Assembler Language Structure Condit
Page 44 and 45: Assembler Language Structure Machin
Page 46 and 47: Assembler Language Structure Condit
Page 48 and 49: Terms, Literals, and Expressions Te
Page 50 and 51: Terms, Literals, and Expressions -
Page 52 and 53: Terms, Literals, and Expressions As
Page 54 and 55: Terms, Literals, and Expressions Se
Page 56 and 57:
Terms, Literals, and Expressions Fo
Page 58 and 59:
Terms, Literals, and Expressions I
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Terms, Literals, and Expressions Th
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Terms, Literals, and Expressions 1.
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Terms, Literals, and Expressions
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Terms, Literals, and Expressions
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Terms, Literals, and Expressions Th
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| Chapter 3. Program Structures and
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Source Module A source module is co
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The CSECT instruction can be used a
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| in linker control statements for
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This is not only convenient, but it
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| SECT_A CSECT , Define section SEC
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| For executable sections, the loca
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Addressing | The System/390® and z
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Addressing | Parts must always be r
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Addressing Literal Pools ALPHA LR 3
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Addressing If the symbol is the nam
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Addressing External Symbol Dictiona
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Addressing 74 HLASM V1R5 Language R
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Part 2. Machine and Assembler Instr
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General Instructions Chapter 4. Mac
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Input/Output Operations For further
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Branching with Extended Mnemonic Co
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Symbolic Operation Codes variations
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Operand Entries Registers You can s
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Operand Entries “Program Structur
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Operand Entries Format │ Coded or
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Examples of Coded Machine Instructi
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Chapter 5. Assembler Instruction St
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*PROCESS Statement *PROCESS Stateme
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ACONTROL Instruction ►►──
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ACONTROL Instruction FLAG(PAGE0) in
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AINSERT Instruction character_strin
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AMODE Instruction alias_string is t
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CATTR Instruction Figure 25. AMODE/
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CATTR Instruction | statements for
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CCW1 Instruction data_count is an a
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CEJECT Instruction If symbol is an
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CNOP Instruction Figure 29 (Page 2
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COPY Instruction In the following e
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CSECT Instruction symbol in the nam
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DC Instruction ROUTINE B GAMMA DXD
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DC Instruction duplication_factor c
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DC Instruction Figure 33 (Page 2 of
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DC Instruction With EBCDIC spaces
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DC Instruction Further information
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DC Instruction | Symbols used in su
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DC Instruction The length attribute
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DC Instruction Notes: 1. Don't conf
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DC Instruction—Character Constant
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DC Instruction—Character Constant
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DC Instruction—Graphic Constant r
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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 Constants
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DC Instruction—Address Constants
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DC Instruction—Address Constants
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DC Instruction—Offset Constant re
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DC Instruction—Length Constant Le
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DC Instruction—Hexadecimal Floati
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DC Instruction—Binary Floating-Po
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DC Instruction—Binary Floating-Po
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DROP Instruction DROP Instruction T
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DS Instruction USING DSECTA,14 ALBL
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DS Instruction The size of a storag
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DSECT Instruction DSECT Instruction
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DXD Instruction ASEMBLY2 CSECT USIN
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END Instruction change but no addit
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EQU Instruction EQU Instruction The
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EQU Instruction 5. The length attri
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EXITCTL Instruction sequence_symbol
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ISEQ Instruction must be greater th
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LOCTR Instruction A CSECT , See not
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LTORG Instruction If symbol is an o
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MNOTE Instruction When two literals
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OPSYN Instruction ,ERROR, SEV 1 An
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ORG Instruction AFTER is defined in
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ORG Instruction If you specify mult
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POP Instruction POP Instruction The
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PRINT Instruction Note: If the next
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Process Statement Process Statement
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REPRO Instruction NOPRINT instructs
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RSECT Instruction 4. AMODE or RMODE
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START Instruction START Instruction
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TITLE Instruction The name value is
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USING Instruction Only the characte
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USING Instruction Base Registers fo
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USING Instruction If register 0 is
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USING Instruction A variable symbo
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USING Instruction In this MVC instr
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USING Instruction Range of a Depend
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XATTR Instruction external_symbol i
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XATTR Instruction SCOPE ►►─
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XATTR Instruction 234 HLASM V1R5 La
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Part 3. Macro Language &SYSDATC Sys
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Introduction to Macro Language Chap
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Introduction to Macro Language The
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Introduction to Macro Language Macr
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MACRO and MEND Statements The assem
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Prototype Statement Macros that are
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Model Statements generated from tha
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Model Statements ▌5▐ ▌6▐
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Model Statements Notes: 1. You can
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Positional Parameters Symbolic para
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Processing Statements Processing St
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AREAD Instruction Assign Local Time
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COPY Instruction sequence_symbol is
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System Variable Symbols System Vari
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&SYSADATA_MEMBER System Variable Sy
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&SYSCLOCK System Variable Symbol &S
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&SYSECT System Variable Symbol depe
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&SYSIN_MEMBER System Variable Symbo
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&SYSJOB System Variable Symbol &SYS
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&SYSLIN_DSN System Variable Symbol
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&SYSLIST System Variable Symbol The
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&SYSLOC System Variable Symbol To
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&SYSM_SEV System Variable Symbol &S
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&SYSNDX System Variable Symbol The
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&SYSOPT_DBCS System Variable Symbol
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&SYSPARM System Variable Symbol Not
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&SYSPRINT_MEMBER System Variable Sy
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&SYSPUNCH_MEMBER System Variable Sy
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&SYSSTEP System Variable Symbol Not
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&SYSTERM_DSN System Variable Symbol
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&SYSTIME System Variable Symbol Not
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Macro Instruction Format sequence_s
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Macro Instruction Format Operand En
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Macro Instruction Format When you n
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Sublists in Operands the order in w
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Sublists in Operands &SYSLIST( n,m)
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Values in Operands Notes: 1. Spaces
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Values in Operands Parentheses In m
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Inner and Outer Macro Instructions
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Levels of Macro Call Nesting When t
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Levels of Macro Call Nesting System
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How to Write Conditional Assembly I
Page 340 and 341:
SET Symbols SET Symbol Specificatio
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SET Symbols Figure 86 (Page 3 of 3)
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Data Attributes this example indica
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Data Attributes variable_symbol is
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Data Attributes The value of an att
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Data Attributes The following attri
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Data Attributes Assembler gives a t
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Data Attributes The scale attribute
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Data Attributes Number Attribute (N
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Data Attributes The operation code
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Lookahead MACRO &NAME MOVE &TO,&FRO
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Open Code Sequence Symbols The cond
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GBLA, GBLB, and GBLC Instructions G
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LCLA, LCLB, and LCLC Instructions s
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SETA Instruction expression is an a
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SETA Instruction | The logical-exp
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SETA Instruction | Figure 99 (Page
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SETA Instruction | The result of C2
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SETA Instruction NOT Format: Logica
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SETA Instruction | X2A Name Operati
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SETA Instruction In evaluating the
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SETB Instruction Any expression tha
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SETB Instruction ┌─────
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SETB Instruction | ISDEC | Format:
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SETB Instruction The two comparands
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SETC Instruction Notes: 1. The asse
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Figure 103. Substring Notation in C
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Loc Object Code Addr1 Addr2 Stmt So
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| B2C('111111') has value '3' | B2C
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| Output: D2B('decstring') converts
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SIGNED Format: Logical-expression,
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| X2D('') has value '+' | X2D('91')
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Concatenation of strings containing
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MACRO &NAME MOVE &TO,&FROM LCLC &PR
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SETAF Instruction Alternative State
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Branching Branching You can control
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AGO Instruction The extended AIF in
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ACTR Instruction AGOB—Synonym of
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ANOP Instruction statement processe
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MHELP Instruction MHELP B'10000000'
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400 HLASM V1R5 Language Reference
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Assembler Instructions and Statemen
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Summary of Constants Figure 113. Su
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Macro and Conditional Assembly Lang
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Standard Character Set Code Table H
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Standard Character Set Code Table H
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Trademarks AIX BookMaster CICS DFSM
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Bibliography SMP/E Reference, SC28-
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Index A2C (SETC built-in function)
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Index B B-type binary constant 141
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Index conditional assembly instruct
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Index elements of conditional assem
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Index instructions (continued) asse
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Index machine instruction statement
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Index operands (continued) compatib
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Index relative addressing 67 reloca
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Index sublists compatibility with A
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Index variable symbols (continued)
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Readers' Comments High Level Assemb
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IBM® Program Number: 5696-234 Prin
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