Enhancement type microprocessor piece on-chip dynamic state tracking method with special function register breakpoints
A microprocessor and dynamic tracking technology, applied in the direction of software testing/debugging, etc., can solve the problems of occupying more resources, inconvenient implementation, and large changes to the processor core.
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[0039] A preferred embodiment of the present invention is described in detail as follows in conjunction with accompanying drawing:
[0040] The on-chip dynamic tracking method of this microprocessor adopts the following workflow (see Figure 1) to realize the dynamic tracking of the processor running process:
[0041] a) If the debug enable signal (DBG_enable) is kept at a low level, the debug command register (DBG_command) does not work at this time, and the microprocessor operates normally. If you want to debug, set the debug enable signal (DBG_enable) to a high level.
[0042] b) Write the initial value to the debug command register (DBG_command), and the format description of the debug command register is shown in Table 1 of the accompanying drawing. In this design, the start flag bit start is defined first, if the flag position is 1, it indicates the start of debugging. The reason for setting the start flag is: if there is no debug start flag, because the default value ...
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