a question about gdb and simulator

[liu lijuan]

    We are doing graduate design about SOC design tool, and we want to 
extend GNU debugger¡¯s some functions, and do a simulator and debugger 
environment. We use SystemC to simulate the procedure of CPU simulator, and 
this simulator is a part of hardware system.  During the simulation, CPU 
simulator needs a soft debugger. We want to use gdb as its debugger. We 
know that gdb supports built-in CPU simulator, but our simulator isn¡¯t 
built-in. But we don¡¯t know how gdb exchange information with built-in 
simulator and control the run of built-in CPU simulator. On this condition, 
we intend to apply the communication method between gdb and built-in CPU 
simulator to our design. Our simulator doesn¡¯t work as gdb¡¯s ISS , and 
also doesn¡¯t run in remote manner, therefore we think ¡°gdb remote serial 
protocol¡± can not be used in our design. Because our CPU simulator run in 
local manner (simulator and gdb run in the same machine), we think the same 
mechanism may be used in our design.
    If you have time, can you help us and provide us some reference about 
our work?
    Thanks a lot!



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