Source level support

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If you need source level support for any dynamically loaded programs then you need to get IDF to load the required ASMLANGX files. There are two ways to do this:
  • Use the STMTSTEP command (see STMTSTEP). For this to work correctly, the CSECT name must match the file name of the extract file. So if you are in a section named CODE then the extract file name also has to be CODE for the automatic load to complete successfully.
  • Use the LANGUAGE LOAD command (see LANGUAGE LOAD). This command lets you preload the extract files before execution of these sections. It also lets you load extract files where the name of the extract file does not match the section name. This might be useful when you are debugging a module with multiple code sections, but you only have one extract file.

The QUALIFY command (see QUALIFY) lets you change the default module name. This is useful with dynamically loaded programs to simplify the commands.

For example, assume that the initial program is ARROW, and IDF has loaded another program called TARGET. The default module name starts off as ARROW and a command like DISASM SECTA searches ARROW for the section names SECTA.

If there is also a section named SECTA in TARGET, to display this section, you have to enter the command DISASM TARGET.SECTA.

If you issue QUAL TARGET first to change the default section name, then DISASM SECTA searches module TARGET.

The qualified name is used whenever a module name is omitted from a command, and the displays remove the qualified name from the window title. Using the previous example, and with QUAL TARGET issued, then the DISASM window from DISASM SECTA shows (SECTA), and if there is another window displaying SECTA from the module ARROW, then the title in that window shows (ARROW.SECTA).