Condition list for breakpoints

[alwin-joshy]

The GDB packet reference (https://sourceware.org/gdb/current/onlinedocs/gdb.html/Packets.html) states that the packet used for setting breakpoints sometimes passes in a condition list, which consists of bytecode expressions that should be evaluated before a breakpoint is reported back to GDB.

The current implementation does not support this and will disregard the condition list if it is sent.

Understanding how this works will require a little more experimentation (I have no idea how this could do anything useful without knowledge about the implementation of the remote stub), but if it is in the form of a function that returns true or false, one possibility might be to (at least in microkit) create a WX MR that is mapped into the debugger PD, write the expression to that and include a function pointer to this somewhere in the breakpoint metadata. Then, when the breakpoint is triggered, call this?