Debug aids

In addition to the TRACE instruction, (see TRACE) there are the following debug aids:
  • The interactive debug facility
  • The TSO/E REXX immediate commands:
    • HE — Halt Execution
    • HI — Halt Interpretation
    • TS — Trace Start
    • TE — Trace End

    You can use the immediate commands if a REXX exec is running in the TSO/E address space and you press the attention interrupt key. In attention mode, you can enter HE, HI, TS, or TE. You can also use the TS and TE immediate commands in a REXX exec that runs in any address space. That is, TS and TE are available from both ADDRESS MVS and ADDRESS TSO.

  • The TSO/E REXX command EXECUTIL with the following operands:
    • HI — Halt Interpretation
    • TS — Trace Start
    • TE — Trace End

    You can use the EXECUTIL command in an exec that runs in the TSO/E address space. You can also use EXECUTIL from TSO/E READY mode and ISPF and in a TSO/E CLIST. You can use EXECUTIL with the HI, TS, or TE operands in a program written in a high-level programming language using the TSO service facility. See EXECUTIL for more information.

  • The trace and execution control routine IRXIC. You can invoke IRXIC from a REXX exec or any program that runs in any address space to use the following TSO/E REXX immediate commands:
    • HI — Halt Interpretation
    • TS — Trace Start
    • TE — Trace End
    • HT — Halt Typing
    • RT — Resume Typing

    See Trace and execution control routine - IRXIC for more information.