1994-02-25
1995-08-15
Beausoliel, Jr., Robert W.
39518306, 3951831, 39518314, 395375, 395700, G06F 1100
Patent
active
054427770
ABSTRACT:
A firmware trace data acquisition method is constituted such that there are provided a monitoring part for monitoring firmware processes and a DMA part for transferring data to a trace data storing part in accordance with an instruction from the monitoring part, such that labels are attached to the plurality of process modules stored in a firmware storing part, and such that each of the process modules activated notifies the monitoring part of the label attached to itself. The monitoring part latches the label that it is notified of and monitors the execution of the corresponding process such that, when an abnormality is detected during the execution, the monitoring part controls the DMA part so as to transfer detailed data, derived from the process module corresponding to the label latched, to the trace data storing part, and such that, when there is no abnormality detected, the monitoring part allows the DMA part to transfer the latched label to the trace data storing part.
REFERENCES:
patent: 3707725 (1972-12-01), Dellheim
patent: 4455624 (1984-06-01), Haag et al.
patent: 4479197 (1984-10-01), Haag et al.
Maruyama Takumi
Nakajima Ryoetsu
Sugita Kiyoshi
Yamazaki Naomi
Beausoliel, Jr. Robert W.
Fujitsu Limited
Hua Ly V.
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