[haiku-bugs] Re: [Haiku] #6751: gdb won't single step
- From: "grahamh" <trac@xxxxxxxxxxxx>
- Date: Fri, 29 Oct 2010 18:59:15 -0000
#6751: gdb won't single step
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Reporter: grahamh | Owner: bonefish
Type: bug | Status: in-progress
Priority: normal | Milestone: R1
Component: Applications/Command Line Tools | Version:
Resolution: | R1/Development
Blocked By: | Keywords:
Platform: x86 | Has a Patch: 0
| Blocking:
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Comment (by grahamh):
Sorry, yes, you are right. I didn't mention DISABLE_BREAKPOINTS, because
it doesn't do anything unless there are breakpoints set - so I didn't
realise its relevance. As you correctly say, single step doesn't set the
thread's breakpoint flag, because on x86 single stepping doesn't work via
breakpoints, and that is what's preventing
x86_exit_user_debug_at_kernel_entry() from being called. Presumably
setting the breakpoint flag for single step might be a solution (when
getting a B_DEBUG_MESSAGE_CONTINUE_THREAD with single_step set), but I
don't know what other things that might break.
(This is the first time I have looked inside the Haiku kernel, so I don't
have a good feel for how everything interconnects yet...)
--
Ticket URL: <http://dev.haiku-os.org/ticket/6751#comment:11>
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