HP 3000 Manuals HP 3000 Manuals
Chapter 3 System Debug Interfaces
Commands & Intrinsics
Debug may be invoked directly through an integrated set of commands and
intrinsics. All MPE V intrinsics are supported. In addition, several
new intrinsics have been added to enhance the functionality of MPE XL and
take advantage of the new debugger. The commands and intrinsics allow
you to enter the debugger from three different paths:
* Directly from a command interpreter (CI) command in a session.
* From a program through an intrinsic call.
* From the system during an abnormal process termination (a process
abort).
Many of the commands and intrinsics that make up the system debugger
interface also allow you to specify an optional character string
containing Debug commands . If supplied, this string is passed to Debug
for execution as part of debugger initialization.
The MPE XL commands and intrinsics allow you to do the following:
* Enter Debug from a program or in a session directly from the CI.
* Generate stack trace upon demand from within a program.
* Execute a defined series of Debug commands from a session, job, or
program.
* Arm a call to Debug to take place during the process abort sequence.
* Disarm the call to Debug during the process abort sequence.
The Debug commands and intrinsics are described in the following
sections. For additional information, refer to the MPE XL Commands
Reference Manual (32650-90003) and the
MPE XL Intrinsics Reference Manual (32650-90028).