Implement GDB stub for remote debugging #45
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An example to use the debug mode on |
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I think I may have to write down some examples to use the debug mode and also mention the limitation of this functionality in |
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You should modify |
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jserv
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You can prepare a GDB script file. Let's say "remote-commands.gdb" and run gdb with option |
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A GDB script is added now to simply test some of the supported commands/commands sequences, which can be run by |
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This patch provide an experimental solution that lets rv32emu support a small set of GDB Remote Serial Protocol packet with the mini-gdbstub library. After this patch, we could connect our emulator to GDB and interact with some simple commands like printing current program counter(`print $pc`) or unpausing the execution(`continue`). It's worth mentioning that we only enable to use single breakpoint on rv32emu under this patch. It will be improved in the future. Close #22
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Thank @RinHizakura for contributing! I amended the commit messages. |
With the help of the external mini-gdbstub library, rv32emu offers an experimental way to support a limited number of GDB Remote Serial Protocol (GDBRSP) packets. After applying this patch, we were able to connect rv32emu to GDB and interact with it using basic commands such as "print $pc" to dump the value of current program counter or "continue" to resume program running. It is important to note that this patch only permits the use of one breakpoint. Future upgrades will be made. Close sysprog21#22
This is an experimental solution that lets
rv32emusupport a small set of GDB Remote Serial Protocol packet with mymini-gdbstublibrary.It is worth mentioning that
mini-gdbstubis still a WIP and unstable library, so it doesn't support every type of packet of GDB remote serial protocol, and there might also have some bugs that must be refined inmini-gdbstub. I think we could still addmini-gdbstubonrv32emufirst and report the bug tomini-gdbstubdirectly if we find any. Tell me if you have any better thoughts to integrate the GDB remote serial protocol support onrv32emu.On the other hand,
rv32emuitself also has to provide a better implementation of the gdbstub abstraction (For example,rv_set_bpshould be able to set more than one breakpoint).