UCBLOOK - List form

Use the list form of the UCBLOOK macro together with the execute form for applications that require reentrant code. The list form of the macro defines an area of storage that the execute form uses for storing the parameters.

Syntax

This macro is an alternative list form macro, and requires a different technique for using the list form as compared to the conventional list form macros.

The list form of the UCBLOOK macro is written as follows:

Syntax	Description

`name`	`name`: Symbol. Begin `name` in column 1.

␢	One or more blanks must precede UCBLOOK

UCBLOOK

␢	One or more blanks must follow UCBLOOK

,PLISTVER=IMPLIED_VERSION
,PLISTVER=MAX	Default: IMPLIED_VERSION
,PLISTVER=`plistver`	`plistver`: 2

MF=(L,`list addr`)	`list addr`: symbol.
MF=(L,`list addr`,`attr`)	`attr`: 1- to 60-character input string.
MF=(L,`list addr`,0D)	Default: 0D

Parameters

The parameters are explained under the standard form of the UCBLOOK macro with the following exceptions:

MF=(L,list addr)

MF=(L,list addr,attr)

MF=(L,list addr,0D)

Specifies the list form of the UCBLOOK macro.

The list addr parameter specifies the address of the storage area for the parameter list.

attr is an optional 1- to 60-character input string, which can contain any value that is valid on an assembler DS pseudo-op. You can use this parameter to force boundary alignment of the parameter list. If you do not code attr, the system provides a value of 0D, which forces the parameter list to a doubleword boundary.