Halting when certain assembler routines are called

This topic describes how to halt just after a routine is called by using the AT ENTRY command. The Example: sample assembler program for debugging is used to describe these commands.

To halt after the DISPARM routine is called, enter the following command:

AT ENTRY DISPARM

To halt after the DISPARM routine is called and only when R1 equals 0, enter the following command:

AT ENTRY DISPARM WHEN R1=0;

The AT CALL command is not supported for assembler routines. Do not use the AT CALL command to stop z/OS® Debugger when an assembler routine is called.