From: Jim Blandy <jimb@red-bean.com>
To: Mark Kettenis <mark.kettenis@xs4all.nl>
Cc: drow@false.org, gdb-patches@sourceware.org, fnf@specifix.com
Subject: Re: Fix PR breakpoints/2080
Date: Tue, 14 Feb 2006 20:23:00 -0000 [thread overview]
Message-ID: <8f2776cb0602141222v24610400s3c8927ff446f185a@mail.gmail.com> (raw)
In-Reply-To: <200602141638.k1EGckea012314@elgar.sibelius.xs4all.nl>
> > Of course in optimized code we don't expect the prologue skipper to
> > work very well, and we use dwarf2 to bypass the prologue analyzer,
> > so this may not be a big deal. But I'm somewhat curious to see if
> > we could make this extremely sophisticated i386 prologue analyzer
> > use Jim's prologue-value.[ch] interface...
>
> Well, writing that prologue analyzer will be hell of a lot more
> difficult for CISC than it is for RISC; even with Jim's
> prologue-value.[ch].
Looking at the prologue you put in gdb.arch/i386-prologue.c, I think
it'd be okay. The 'and' would set esp to 'unknown', but that should
be okay, since the original stack pointer has been saved in ebp.
In fact, there's already a pv_logical_and operation in
prologue-value.c. If I remember right, s390 prologues can use logical
and from time to time.
next prev parent reply other threads:[~2006-02-14 20:23 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-14 15:45 Mark Kettenis
2006-02-14 15:52 ` Daniel Jacobowitz
2006-02-14 16:39 ` Mark Kettenis
2006-02-14 16:59 ` Daniel Jacobowitz
2006-02-14 20:23 ` Jim Blandy [this message]
2006-02-20 13:58 ` Fred Fish
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