z/OS V1R9.0 TSO/E Command Reference

EXECUTIL Commandv Addr -- the address, in storage, of the entry point of the function orsubroutine code.v Sys_name -- the name of the entry point in a load module that correspondsto the code that is called for the function or subroutine.v Sys_dd -- the name of the DD from which the function or subroutine code isloaded.You can use EXECUTIL RENAME with the SYSNAME and DD operands tochange an entry in a function package directory as follows:v Use the SYSNAME operand to change the sys_name of the function orsubroutine in the function package directory. When an exec invokes thefunction or subroutine, the routine with the new sys_name is invoked.v Use EXECUTIL RENAME NAME(function_name) without the SYSNAME andDD operands to flag the directory entry as null. This causes the search forthe function or subroutine to continue because a null entry is bypassed. Thesystem will then search for a load module and an exec or both. z/OS TSO/EREXX Reference, describes the complete search order.EXECUTIL RENAME clears the addr field in the function package directory toX'00'. When you change an entry, the name of the external function orsubroutine is not changed, but the code that the function or subroutine invokesis replaced.You can use EXECUTIL RENAME to change an entry so that different code isused.NAME(function_name)specifies the name of the external function or subroutine that is used in anexec. This is also the name in the function_name field in the directory entry.SYSNAME(sys_name)specifies the name of the entry point in a load module that corresponds tothe package code that is called for the function or subroutine. If SYSNAMEis omitted, the sys_name field in the package directory is set to blanks.DD(sys_dd)specifies the name of the DD from which the package code is loaded. If DDis omitted, the sys_dd field in the package directory is set to blanks.SEARCHDD(YES | NO)specifies whether the system exec library (the default is SYSEXEC) should besearched when execs are implicitly invoked.YESindicates that the system exec library (SYSEXEC) is searched, and if theexec is not found, SYSPROC is then searched.NOindicates that SYSPROC only is searched.EXECUTIL SEARCHDD lets you dynamically change the search order.Note: EXECUTIL SEARCHDD generally affects the current language processorenvironment in which it is invoked. If you use EXECUTIL SEARCHDDfrom TSO/E READY mode, when you invoke ISPF, the new search ordermay also be in effect for ISPF. This depends on the values yourinstallation uses for the initialization of a language processorChapter 1. TSO/E commands and subcommands 147