From: Jim Blandy <jimb@red-bean.com>
To: Randolph Chung <randolph@tausq.org>
Cc: gdb-patches@sources.redhat.com
Subject: Re: [RFA/RFC] Support DW_OP_breg for tracepoints
Date: Mon, 14 Nov 2005 02:27:00 -0000 [thread overview]
Message-ID: <8f2776cb0511131539j17ae5144n87b1aedab1fa420e@mail.gmail.com> (raw)
In-Reply-To: <43775DDB.6020408@tausq.org>
On 11/13/05, Randolph Chung <randolph@tausq.org> wrote:
> Warning: I don't really understand how this works :-)
>
> On hppa-linux, when running gdb.trace/save-trace.exp, the test fails
> because of:
>
> "Unsupported DWARF opcode in the location of q1"
>
> The opcode in question is "DW_OP_breg3". The attached patch attempts to
> add support for DW_OP_breg0..DW_OP_breg31. With this patch hppa-linux
> passes the testcase, although not really understanding DWARF-2 I am not
> certain this is 100% correct. DWARF experts, comments appreciated.
Why are you adding the offset twice? Is it just cut-and-paste from
the DW_OP_fbreg code? That looks wrong, too.
This code should go in ax-gdb.[ch]. That has a translator from GDB
expressions to agent expressions; it would make sense to also have a
translator from Dwarf expressions to agent expressions.
next prev parent reply other threads:[~2005-11-13 23:39 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-13 18:10 Randolph Chung
2005-11-13 18:11 ` Daniel Jacobowitz
2005-11-14 2:27 ` Jim Blandy [this message]
2005-11-14 3:41 ` Randolph Chung
2005-11-14 3:56 ` Daniel Jacobowitz
2005-11-14 15:57 ` Jim Blandy
2005-11-19 19:41 ` Randolph Chung
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