At 9:22 AM +0200 9/18/01, Mark Santcroos wrote:
>Hi Peter,
>
>What is the state of this (for i386)?
>
>Mark
>
>On Sun, Sep 16, 2001 at 11:24:54AM -0700, Julian Elischer wrote:
>> Marcel Moolenaar wrote:
>> >
>> > Gang,
>> >
>> > I don't know exactly what the gdb(1) problems on Alpha are, but we
>> > do have a problem that's probably not specific to an architecture.
>> >
>> > The problem is basicly this: one cannot debug any programs because
>> > gdb(1) gets a SIGTRAP delivered when it invokes ptrace(2) and never
>> > gets a change to wait4(2) the "interior" process.
>> >
>> > I don't know the details, but one of the following can be the case
>> > 1. We now deliver a SIGTRAP, when we didn't do so before,
>> > 2. The SIGTRAP comes too quick, it should be "caught" by the wait4(2).
>> >
>> > I couldn't find any indication that 1 happened, so my guess is that
>> > we suffer from 2.
>> >
>> > Is this known?
>> > Any thoughts?
>>
>> peter has been working on this...
>>
> > It's because the process structure and u-area have changed entirely.
I just checked in a change to fix this problem
(sys/kern/sys_process.c v1.71). The KSE changes caused the trace
information to be put into the debug process state instead of the
traced process.
Mark
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