International Business Machines Corporation

Joerg Schulze

Ralf Schaufler

Walter Nicklaus

A hardware access layer (HAL) is combined with a configurable shadow mechanism, that copies the specified memory or register segments accessed in remote hardware by a program being debugged. The HAL may be involved in all interrupt handling for the remote hardware. By making this shadow mechanism configurable during runtime, and using a standard debugging techniques, a developer can specify watchpoints to break program execution based on changes in the remotely attached hardware as indicated in the specified shadow register segments.

Pseudo hardware watch points for remote debugging of non-initialized processors

Technique for initializing a data processing system. Sequences of initialization steps for selected functional hardware elements of a data processing system are defined and dependencies between the initialization steps are determined. These definition steps are preferably performed during the design and development of the data processing system. The sequences of initialization steps and their dependencies are represented in a single control flow table. This control flow table is then analyzed by a system management controller during an initialization phase of the data processing system. The sequences are associated with selected functional hardware elements and for each associated sequence of initialization steps the system management controller generates and executes a parallel thread of execution.

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Leonberg, Germany

Joerg Schulze