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vinayknj
New User
Joined: 26 May 2008
Posts: 50
Location: Bangalore
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Hi,
In Assembler we use L' for the length of a field. I have encountered T' and K' in some of the programs. Can anyone explain the meaning of T' and K' in Assembler? Thanks |
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PeterHolland
Global Moderator
Joined: 27 Oct 2009
Posts: 2481
Location: Netherlands, Amstelveen
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They are mostly used in conditional assembly language.
See : High Level Assembler for z/OS & z/VM & z/VSE Language Reference Release 6 SC26-4940-05
Chapter 9. |
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nigelosberry
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Joined: 06 Jan 2009
Posts: 88
Location: Ggn, IN
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They may be useful if you are writing assembler macros of your own.
T' - type attribute
K' - count attribute
Cheers. |
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Bill O'Boyle
CICS Moderator
Joined: 14 Jan 2008
Posts: 2501
Location: Atlanta, Georgia, USA
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For example, L' can come in real handy when you need to load the length of a data-area without knowing its actual length beforehand -
| Code: |
SMALLAREA DS CL1024
LARGEAREA DS CL65535
LH R1,=Y(L'SMALLAREA) GENERATES A HWORD-LTORG
LH R1,=AL2(L'SMALLAREA) SAME
L R1,=A(L'LARGEAREA) GENERATES A FWORD-LTORG
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Introduced with HLASM, HWORD immediate instructions have a maximum of 32767 and don't generate an LTORG entry -
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LHI R1,L'SMALLAREA LOADS H'1024' INTO R1
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Prior to HLASM, you could use a LA, which has a maximum of 4095.
Bill |
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enrico-sorichetti
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Joined: 14 Mar 2007
Posts: 10873
Location: italy
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