Template:360 Assembly/Example 95
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For the purpose of this example it is assumed that R14 is equated to 14, R15 is equated to 15 etc., to provide cross reference - see EQU Assembler pseudo-instruction)
* some typical assembler instructions showing comments to the right L R15,=A(MOVE) Load sub-routine address into R15 BALR R14,R15 Go to the sub-routine ===> * ....return here with return code in R15 * ***************************************** * Move the input to output * ***************************************** MOVE EQU * Start of a sub-routine called "Move" USING *,R15 Tell the assembler reg. 15 points to * this address MVC OUTPUT,INPUT Move the input to the output area SR R15,R15 Clear register contents (set Return code = 0) BR R14 return to caller DROP R15 Tell assembler we are no longer using * register 15 and resume using previous register * TABLE DC C'ABCDEFGHIJKLMNOPQRSTUVWXYZ' Table of letters of the alphabet INPUT DS Cl80 Input area OUTPUT DS Cl80 Output area
360 Assembler Pseudo Instructions | |
Address Related | ADATA • CNOP • DROP • EQU • LOCTR • LTORG • ORG • USING |
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Code Related | ALIAS • AMODE • CATTR • COM • CSECT • CXD • DSECT • DXD • END • ENTRY • EXTRN • OPSYN • RMODE • RSECT • START • WXTRN • XATTR |
Data Related | CCW • CCW0 • CCW1 • DC • DS |
Conditional Assembly and Macro related | ACTR • AGO • AIF • AINSERT • ANOP • AREAD • COPY • GBLA / GBLB / GBLC • LCLA / LCLB / LCLC • MACRO • MEND • MEXIT • MNOTE • SETA / SETB / SETC |
Listing, output and source related | Comments • *PROCESS • ACONTROL • EJECT • END • EXITCTL •ICTL • ISEQ • POP • PRINT • PUNCH • PUSH • REPRO • SPACE • TITLE |
360 Assembly Language | |
360 Family | Introduction · Basic FAQ · 360 Family · 360 Architecture |
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360 Instruction Set | 360 Instructions · Branch Instructions · Data Transfer Instructions · Control Flow Instructions · Arithmetic Instructions · Logic Instructions · Shift and Rotate Instructions · Priveleged Instructions · Other Instructions |
Syntaxes and Assemblers | 360 Assemblers· Pseudo Instructions |
Instruction Extensions | Floating Point · High-Level Languages |