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adjust control thread single-step path to be a bit more robust to malformed requests

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This commit is contained in:
Ryan Fleury
2024-10-11 15:09:08 -07:00
parent 4091f5e0c0
commit 193d6726c6
2 changed files with 33 additions and 22 deletions
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src/ctrl/ctrl_core.c
+11 -7
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@@ -5533,10 +5533,12 @@ ctrl_thread__single_step(DMN_CtrlCtx *ctrl_ctx, CTRL_Msg *msg)
}
//- rjf: single step
DMN_Handle thread = msg->entity.dmn_handle;
B32 thread_is_valid = !dmn_handle_match(thread, dmn_handle_zero());
DMN_Event *stop_event = 0;
CTRL_EventCause stop_cause = CTRL_EventCause_Null;
if(thread_is_valid)
{
DMN_Handle thread = msg->entity.dmn_handle;
U64 thread_pre_rip = dmn_rip_from_thread(thread);
U64 thread_post_rip = thread_pre_rip;
for(B32 done = 0; done == 0;)
@@ -5570,17 +5572,19 @@ ctrl_thread__single_step(DMN_CtrlCtx *ctrl_ctx, CTRL_Msg *msg)
}
//- rjf: record stop
if(stop_event != 0)
{
CTRL_EventList evts = {0};
CTRL_Event *event = ctrl_event_list_push(scratch.arena, &evts);
event->kind = CTRL_EventKind_Stopped;
event->cause = stop_cause;
event->entity = ctrl_handle_make(CTRL_MachineID_Local, stop_event->thread);
event->parent = ctrl_handle_make(CTRL_MachineID_Local, stop_event->process);
event->exception_code = stop_event->code;
event->vaddr_rng = r1u64(stop_event->address, stop_event->address);
event->rip_vaddr = stop_event->instruction_pointer;
if(stop_event != 0)
{
event->entity = ctrl_handle_make(CTRL_MachineID_Local, stop_event->thread);
event->parent = ctrl_handle_make(CTRL_MachineID_Local, stop_event->process);
event->exception_code = stop_event->code;
event->vaddr_rng = r1u64(stop_event->address, stop_event->address);
event->rip_vaddr = stop_event->instruction_pointer;
}
ctrl_c2u_push_events(&evts);
}