Operating system development tool

G - Physics – 06 – F

Patent

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G06F 12/08 (2006.01) G06F 11/36 (2006.01)

Patent

CA 2117159

This debugging tool (KD) for an operating system of a machine which includes at least one processor (P) in relation to the memory (M) processor and a memory management unit (MMU) is implanted in a memory area (M) where the virtual addressing mode is equal to the physical addressing mode. Throughout the debugging process and according to a predetermined procedure, it executes all operations in physical mode independently of the management unit (MMU). For the control of the machine's initialization phases, it supports at least two exception vectors (BP, DSI) and includes its own battery (S), a decoder (DEC) using a processable algorithm no matter what the context of the process analysed, and means of storage (CMM) of the decoded context.

Cet outil de mise au point (KD) d'un système d'exploitation d'une machine qui comprend, entre autres, au moins un processeur (P), en relation avec le processeur une mémoire (M) et une unité de gestion de la mémoire (MMU) est implanté dans une zone de la mémoire (M) où le mode d'adressage virtuel est égal au mode d'adressage physique. Il exécute, tout au long de la mise au point et selon une procédure prédeterminée, toute opération en mode physique et de manière indépendante de l'unité de gestion (MMU). Pour le contrôle des phases d'initialisation de la machine, il supporte au moins deux vecteurs d'exception (BP, DSI) et comprend, entre autres, sa propre pile (S), un décodeur (DEC) utilisant un algorithme exploitable quel que soit le contexte du processus analysé et des moyens de stockage (CMM) du contexte décodé.

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