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Re: int target_query(what, aux, buf, offset, len)
- From: Daniel Jacobowitz <drow at mvista dot com>
- To: gdb-patches at sources dot redhat dot com
- Date: Wed, 8 Oct 2003 22:11:22 -0400
- Subject: Re: int target_query(what, aux, buf, offset, len)
- References: <3F848F17.6030807@redhat.com>
On Wed, Oct 08, 2003 at 06:26:31PM -0400, Andrew Cagney wrote:
> Hello,
>
> Ref: The bottom of:
> http://sources.redhat.com/ml/gdb-patches/2003-10/msg00158.html
> and replies.
>
> has identified the need to update target_query(). The present interface
> looks like:
>
> int target_query (int /*char */ query_type,
> char *buf,
> char *outbuf,
> int *bufsiz);
>
> Where QUERY_TYPE and BUF are used to construct the query sent to the
> target. I'd like to propose that it be changed to:
>
> long
> target_query (enum target_query_type query_type, const char *aux,
> void *outbuf, CORE_ADDR offset, long length);
>
> It attempts to query OFFSET:LENGTH bytes returning them in outbuf.
>
> The number of bytes actually transfered is returned, or zero if no more
> bytes are available, or -1 if the query isn't supported. This allows
> short reads.
>
> Defined QUERY_TYPEs include QUERY_TYPE_T, QUERY_TYPE_P, others can be
> added later. Some queries require suplemental information and that can
> be passed using the string buffer AUX.
>
> The "auxv" could be transfered using (QUERY_TYPE_PROC_AUXV, ...) or
> (QUERY_TYPE_PROC, "auxv", ...)
This seems reasonable to me.
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer