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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Generic-swap/360-Assembly/generic-swap.360 Normal file
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SWAP CSECT , control section start
BAKR 14,0 stack caller's registers
LR 12,15 entry point address to reg.12
USING SWAP,12 use as base
MVC A,=C'5678____' init field A
MVC B,=C'____1234' init field B
LA 2,L address of length field in reg.2
WTO TEXT=(2) Write To Operator, results in:
* +5678________1234
XC A,B XOR A,B
XC B,A XOR B,A
XC A,B XOR A,B. A holds B, B holds A
WTO TEXT=(2) Write To Operator, results in:
* +____12345678____
PR , return to caller
LTORG , literals displacement
L DC H'16' halfword containg decimal 16
A DS CL8 field A, 8 bytes
B DS CL8 field B, 8 bytes
END SWAP program end