Date: Tue, 26 Mar 2002 08:18:45 +1100 (EST) From: callum.gibson@db.com To: bakul@bitblocks.com Cc: hackers@FreeBSD.ORG, peter@wemm.org Subject: Re: Missing PT_READ_U Message-ID: <20020325211845.1503.qmail@merton.aus.deuba.com> In-Reply-To: <200203251945.OAA08115@renown.cnchost.com> from "bakul@bitblocks.com" at Mar 25, 2002 11:45:23 AM
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bakul@bitblocks.com writes:
}Julian Elischer's diff as applied to the 4.5-RELEASE included
}below. With this change ups-3.37-beta4 compiled unchanged.
}
}But note that you still can't change any registers. If
}PT_WRITE_U is added back to the FreeBSD-4.x branch, no change
}is necessary to ups. So how about it, Peter Wemm?
I'm actually getting crashes in ups (on 4.5, compiled on 4.4) whenever the
debugged program receives a signal. I assume putting back PT_READ_U
will be sufficient to fix this?
}The other alternative is to change ups to understand
}PT_{SET,GET}{REGS,FPREGS} -- this would be needed for
}FreeBSD-5 in any case. But this is not a quick change as ups
}uses PTRACE_{PEEK,POKE}USER for dealing with registers and
}signals and these need to be replaced something more
}discriminating. I took a quick look at it but then got
}distracted. Also, not every arch. has separate FP regs and I
}didn't look deep enough in ups to figure out how to add
}machine dependent code like this.
Hopefully some enterprising young programmer in the ups camp will be
able to help out (when an alternate interface exists - is it in -current
now?). Unfortunately, I don't have knowledge to hack inside ups to that
degree.
C
Callum Gibson callum.gibson@db.com
Global Markets IT, Deutsche Bank, Australia 61 2 9258 1620
### The opinions in this message are mine and not Deutsche's ###
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