HLASM Language Reference
HLASM Language Reference HLASM Language Reference
Branching with Extended Mnemonic Codes Used After Test Under Mask Instructions BO D(X,B) ┐ Branch if Ones RX BC 1,D(X,B) BOR R ┘ RR BCR 1,R BM D(X,B) ┐ Branch if Mixed RX BC 4,D(X,B) BMR R ┘ RR BCR 4,R BZ D(X,B) ┐ Branch if Zero RX BC 8,D(X,B) BZR R ┘ RR BCR 8,R BNO D(X,B) ┐ Branch if Not Ones RX BC 14,D(X,B) BNOR R ┘ RR BCR 14,R BNM D(X,B) ┐ Branch if Not Mixed RX BC 11,D(X,B) BNMR R ┘ RR BCR 11,R BNZ D(X,B) ┐ Branch if Not Zero RX BC 7,D(X,B) BNZR R ┘ RR BCR 7,R | Branch Relative on Condition Long | BRUL label Unconditional Br Rel Long RIL BRCL 15,label | BRHL label Br Rel Long on High RIL BRCL 2,label | BRLL label Br Rel Long on Low RIL BRCL 4,label | BREL label Br Rel Long on Equal RIL BRCL 8,label | BRNHL label Br Rel Long on Not High RIL BRCL 13,label | BRNLL label Br Rel Long on Not Low RIL BRCL 11,label | BRNEL label Br Rel Long on Not Equal RIL BRCL 7,label | BRPL label Br Rel Long on Plus RIL BRCL 2,label | BRML label Br Rel Long on Minus RIL BRCL 4,label | BRZL label Br Rel Long on Zero RIL BRCL 8,label | BROL label Br Rel Long on Overflow RIL BRCL 1,label | BRNPL label Br Rel Long on Not Plus RIL BRCL 13,label | BRNML label Br Rel Long on Not Minus RIL BRCL 11,label | BRNZL label Br Rel Long on Not Zero RIL BRCL 7,label | BRNOL label Br Rel Long on Not Overflow RIL BRCL 14,label | Branch Relative on Condition | BRO label Branch on Overflow RI BRC 1,label | BRP label Branch on Plus RI BRC 2,label | BRH label Branch on High RI BRC 2,label | BRL label Branch on Low RI BRC 4,label | BRM label Branch on Minus RI BRC 4,label | BRNE label Branch on Not Equal RI BRC 7,label | BRNZ label Branch on Not Minus RI BRC 7,label | BRE label Branch on Equal RI BRC 8,label | BRZ label Branch on Zero RI BRC 8,label | BRNL label Branch on Not Low RI BRC 11,label | BRNM label Branch on Not Minus RI BRC 11,label | BRNH label Branch on Not High RI BRC 13,label | BRNP label Branch on Not Plus RI BRC 13,label | BRNO label Branch on No Overflow RI BRC 14,label | BRU label Unconditional Branch RI BRC 15,label Figure 22 (Part 2 of 3). Extended Mnemonic Codes 82 HLASM V1R5 Language Reference
Alternative Mnemonics for some Branch Relative Instructions | Jump on Condition Long JLU label Unconditional Jump Long RIL BRCL 15,label JLNOP label No operation RIL BRCL ,label JLH label Jump Long on High RIL BRCL 2,label JLL label Jump Long on Low RIL BRCL 4,label JLE label Jump Long on Equal RIL BRCL 8,label JLNH label Jump Long on Not High RIL BRCL 13,label JLNL label Jump Long on Not Low RIL BRCL 11,label JLNE label Jump Long on Not Equal RIL BRCL 7,label JLP label Jump Long on Plus RIL BRCL 2,label JLM label Jump Long on Minus RIL BRCL 4,label JLZ label Jump Long on Zero RIL BRCL 8,label JLO label Jump Long on Overflow RIL BRCL 1,label JLNP label Jump Long on Not Plus RIL BRCL 13,label JLNM label Jump Long on Not Minus RIL BRCL 11,label JLNZ label Jump Long on Not Zero RIL BRCL 7,label JLNO label Jump Long on Not Overflow RIL BRCL 14,label Notes: 1. D=displacement, X=index register, B=base register, R=register containing branch address 2. The addresses represented are explicit address (see ▌4▐). However, implicit addresses can also be used in this type of instruction. 3. Avoid using BM, BNM, JM, and JNM after the TMH or TML instruction. Figure 22 (Part 3 of 3). Extended Mnemonic Codes | Alternative Mnemonics for some Branch Relative Instructions | For some branch relative statements, there are alternative mnemonics. These are: | Instruction Alternative Description | -------------------------------------------------------------- | BRAS JAS Branch Relative and Save | BRASL JASL Branch Relative and Save Long | BRCT JCT Branch Relative on Count | BRCTG JCTG Branch Relative on Count | BRXH JXH Branch Relative on Index High | BRXHG JXHG Branch Relative on Index High | BRXLE JXLE Branch Rel. on Index Low or Equal | BRXLG JXLEG Branch Rel. on Index Low or Equal Statement Formats Machine instructions are assembled into 2, 4, or 6 bytes of object code according to the format of each instruction. Machine instruction formats include the following (ordered by length attribute): Length Attribute Basic Formats 2 RR 4 RI, RS, RSI, RX, SI 6 SS See the applicable Principles of Operation manual for complete details about machine instruction formats. See also “Examples of Coded Machine Instructions” on page 91. When you code machine instructions, you use symbolic formats that correspond to the actual machine language formats. Within each basic format, you can also code Chapter 4. Machine Instruction Statements 83
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Branching with Extended Mnemonic Codes<br />
Used After Test Under Mask Instructions<br />
BO D(X,B) ┐ Branch if Ones RX BC 1,D(X,B)<br />
BOR R ┘ RR BCR 1,R<br />
BM D(X,B) ┐ Branch if Mixed RX BC 4,D(X,B)<br />
BMR R ┘ RR BCR 4,R<br />
BZ D(X,B) ┐ Branch if Zero RX BC 8,D(X,B)<br />
BZR R ┘ RR BCR 8,R<br />
BNO D(X,B) ┐ Branch if Not Ones RX BC 14,D(X,B)<br />
BNOR R ┘ RR BCR 14,R<br />
BNM D(X,B) ┐ Branch if Not Mixed RX BC 11,D(X,B)<br />
BNMR R ┘ RR BCR 11,R<br />
BNZ D(X,B) ┐ Branch if Not Zero RX BC 7,D(X,B)<br />
BNZR R ┘ RR BCR 7,R<br />
| Branch Relative on Condition Long<br />
| BRUL label Unconditional Br Rel Long RIL BRCL 15,label<br />
| BRHL label Br Rel Long on High RIL BRCL 2,label<br />
| BRLL label Br Rel Long on Low RIL BRCL 4,label<br />
| BREL label Br Rel Long on Equal RIL BRCL 8,label<br />
| BRNHL label Br Rel Long on Not High RIL BRCL 13,label<br />
| BRNLL label Br Rel Long on Not Low RIL BRCL 11,label<br />
| BRNEL label Br Rel Long on Not Equal RIL BRCL 7,label<br />
| BRPL label Br Rel Long on Plus RIL BRCL 2,label<br />
| BRML label Br Rel Long on Minus RIL BRCL 4,label<br />
| BRZL label Br Rel Long on Zero RIL BRCL 8,label<br />
| BROL label Br Rel Long on Overflow RIL BRCL 1,label<br />
| BRNPL label Br Rel Long on Not Plus RIL BRCL 13,label<br />
| BRNML label Br Rel Long on Not Minus RIL BRCL 11,label<br />
| BRNZL label Br Rel Long on Not Zero RIL BRCL 7,label<br />
| BRNOL label Br Rel Long on Not Overflow RIL BRCL 14,label<br />
| Branch Relative on Condition<br />
| BRO label Branch on Overflow RI BRC 1,label<br />
| BRP label Branch on Plus RI BRC 2,label<br />
| BRH label Branch on High RI BRC 2,label<br />
| BRL label Branch on Low RI BRC 4,label<br />
| BRM label Branch on Minus RI BRC 4,label<br />
| BRNE label Branch on Not Equal RI BRC 7,label<br />
| BRNZ label Branch on Not Minus RI BRC 7,label<br />
| BRE label Branch on Equal RI BRC 8,label<br />
| BRZ label Branch on Zero RI BRC 8,label<br />
| BRNL label Branch on Not Low RI BRC 11,label<br />
| BRNM label Branch on Not Minus RI BRC 11,label<br />
| BRNH label Branch on Not High RI BRC 13,label<br />
| BRNP label Branch on Not Plus RI BRC 13,label<br />
| BRNO label Branch on No Overflow RI BRC 14,label<br />
| BRU label Unconditional Branch RI BRC 15,label<br />
Figure 22 (Part 2 of 3). Extended Mnemonic Codes<br />
82 <strong>HLASM</strong> V1R5 <strong>Language</strong> <strong>Reference</strong>
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