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From: Pedro Alves <pedro@codesourcery.com>
To: gdb-patches@sourceware.org
Cc: Hui Zhu <teawater@gmail.com>
Subject: Re: [PATCH] tracepoint: fix tfile byte order issue
Date: Wed, 20 Oct 2010 10:28:00 -0000	[thread overview]
Message-ID: <201010201128.17479.pedro@codesourcery.com> (raw)
In-Reply-To: <AANLkTikB9-d0gYeWevWnznrmvDESMyzA5sdcB-YF9b7y@mail.gmail.com>

On Wednesday 20 October 2010 09:49:58, Hui Zhu wrote:
> I make a new patch change to use target_gdbarch and use
> extract_signed_integer in signed value.
> 
> And I found that tfile_trace_find define the size of a frame to a int:
> int data_size;
> 
> But I found that gdbserver/tracepoint.c:struct traceframe:
> unsigned int data_size : 32;
> 
> So I change this int to unsigned int.

Thanks.  It appears the format description in gdb.texinfo doesn't
make that explicit, but indeed all sizes should be unsigned.

> @@ -3665,6 +3665,9 @@ tfile_get_traceframe_address (off_t tfra
>      perror_with_name (trace_filename);
>    else if (gotten < 2)
>      error (_("Premature end of file while reading trace file"));
> +  tpnum = (short) extract_signed_integer ((gdb_byte *)&tpnum, 2,
> +					  gdbarch_byte_order
> +					      (target_gdbarch));

I don't think you need all the casts to short, int, etc.. anymore.  Please
add the missing space in the second cast: "(gdb_byte *) &tpnum" everywhere too.

Otherwise okay.  Thanks.

-- 
Pedro Alves


  reply	other threads:[~2010-10-20 10:28 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-10-14  6:41 Hui Zhu
2010-10-19  8:48 ` Hui Zhu
2010-10-19  9:20   ` Pedro Alves
2010-10-20  8:50     ` Hui Zhu
2010-10-20 10:28       ` Pedro Alves [this message]
2010-10-20 14:04         ` Hui Zhu

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