HLASM Language Reference

&SYSLOC System Variable Symbol
To indicate the number of entries in nested sublists, specify the appropriate set
of subscripts need to reference the selected sublist.
Notes:
1. N'&SYSLIST includes any positional operands that are omitted. Positional
operands are omitted by coding a comma where an operand is expected.
2. N'&SYSLIST(n) includes those sublist entries specifically omitted by specifying
the comma that would normally have followed the entry.
3. If the operand indicated by n is not a sublist, N'&SYSLIST(n) is 1. If it is
omitted, N'&SYSLIST(n) is 0.
The COMPAT(SYSLIST) assembler option instructs the assembler to treat sublists
in macro instruction operands as character strings, not sublists. See the HLASM
Programmer's Guide for a description of the COMPAT(SYSLIST) assembler option.
Examples of sublists:
Macro Instruction
N'&SYSLIST
MACLST 1,2,3,4 4
MACLST A,B,,D,E 5
MACLST ,A,B,C,D 5
MACLST (A,B,C),(D,E,F) 2
MACLST
MACLST KEY1=A,KEY2=B
MACLST A,B,KEY1=C 2
MACSUB A,(1,2,3,4,5),B 5
MACSUB A,(1,,3,,5),B 5
MACSUB A,(,2,3,4,5),B 5
MACSUB A,B,C 1
MACSUB A,,C
MACSUB A,(),C 1
MACSUB A,KEY=(A,B,C)
MACSUB
N'&SYSLIST(2)
&SYSLOC System Variable Symbol
Use &SYSLOC in a macro definition to generate the name of the location counter
in effect. If you have not coded a LOCTR instruction between the macro instruction
and the preceding START, CSECT, RSECT, DSECT, or COM instruction, the value
of &SYSLOC is the same as the value of &SYSECT.
The assembler assigns to the system variable symbol &SYSLOC a local read-only
value each time a macro definition containing it is called. The value assigned is the
symbol representing the name of the location counter in use at the point where the
macro is called.
&SYSLOC can only be used in macro definitions; it has local scope.
278 HLASM V1R5 Language Reference