Data processor with a debug device and a stack area control unit and corresponding data processing method
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United States of America Patent
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Sep 14, 1999
Grant Date -
N/A
app pub date -
Oct 30, 1996
filing date -
Oct 31, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A data processor provided with a debug device which performs a simulation and debug on a user program for use in program development for a microcomputer which uses a stack area in order to save a program counter's value and a stack area control device which controls the stack areas in which the stack area control device comprises a using stack area control unit controlling the stack area used by an instruction including functions and interruption routines constituting the user program by use of the access mode information indicating write permit or write inhibit and a stack area access check unit detecting an abnormal access operation into the stack area on the basis of the access mode information.
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