System Debug Reference Manual (32650-90888)

58 Chapter3

System Debug Interface Commands and Intrinsics

DEBUG Intrinsic

Examples

The ﬁrst example arms the Setdump feature. No parameters are speciﬁed, so the default

command string is assumed (the default command string produces a stack trace and

:setdump

The following example also arms the Setdump feature but speciﬁes a list of commands to

be executed if the process aborts.

:setdump ;debug="w 'Process abort at ';w pc; wl ' ' nmpath(pc)"

DEBUG Intrinsic

Enters Debug.

Callable from: NM, CM

Syntax

DEBUG;

Discussion

The DEBUG intrinsic calls Debug from an interactive program. The intrinsic call acts as a

hard-coded breakpoint. Execution of the calling program is halted, and the Debug prompt

is displayed.

If the call is made from a batch program, it is ignored.

Refer to the MPE/iX Intrinsics Reference Manual for additional discussion of this

intrinsic.

Condition Codes

This intrinsic does not return meaningful condition code values.

Example

The following example is a code fragment from a Pascal program. It declares DEBUG as an

intrinsic and then calls it.

PROCEDURE call_debug;

procedure debug; intrinsic;

BEGIN