From: John Darrington <john@darrington.wattle.id.au>
To: Simon Marchi <simon.marchi@polymtl.ca>
Cc: John Darrington <john@darrington.wattle.id.au>,
Tom Tromey <tom@tromey.com>,
gdb-patches@sourceware.org
Subject: Re: [PATCH 2/4] Add a dwarf unit type to represent 24 bit values.
Date: Thu, 27 Sep 2018 05:49:00 -0000 [thread overview]
Message-ID: <20180927054924.e5hgaw4dwdkjezv3@jocasta.intra> (raw)
In-Reply-To: <c4d38b96eee875c17d6b68d5c422e59c@polymtl.ca>
On Wed, Sep 26, 2018 at 10:53:34PM -0400, Simon Marchi wrote:
On 2018-09-26 13:41, John Darrington wrote:
> After discussion with the gcc folks, it seems that there is an easier
> and much simpler solution, which I'm attaching.
>
> J'
Err can you explain how this works, or link to the gcc discussion if it's
explained there? I must be missing something, because as far as I
understand, this will read 4 bytes when reading an address, when I
suppose it's encoded with 3 bytes in the DWARF info, isn't it?
Simon
The relevant discussion is here: https://gcc.gnu.org/ml/gcc-patches/2018-09/msg00712.html
The bottom line is that the dwarf address size does not need to
correspond to the machine address size (and in general it does not) -
it just needs to be at least as long.
J'
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next prev parent reply other threads:[~2018-09-27 5:49 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-29 14:18 S12Z [new patchset] John Darrington
2018-08-29 14:18 ` [PATCH 1/4] gdb: Add builtin types for 24 bit integers John Darrington
2018-09-07 22:04 ` Tom Tromey
2018-09-08 4:27 ` John Darrington
2018-09-08 5:56 ` Tom Tromey
2018-08-29 14:18 ` [PATCH 3/4] GDB: Add support for 24 bit addresses John Darrington
2018-09-07 22:04 ` Tom Tromey
2018-08-29 14:19 ` [PATCH 4/4] GDB: New target s12z John Darrington
2018-09-07 22:03 ` Tom Tromey
2018-09-08 4:46 ` John Darrington
2018-09-08 13:16 ` Tom Tromey
2018-09-08 13:21 ` John Darrington
2018-08-29 14:19 ` [PATCH 2/4] Add a dwarf unit type to represent 24 bit values John Darrington
2018-09-07 21:50 ` Tom Tromey
2018-09-26 17:42 ` John Darrington
2018-09-27 2:53 ` Simon Marchi
2018-09-27 5:49 ` John Darrington [this message]
2018-09-27 17:53 ` Simon Marchi
2018-09-28 16:03 ` John Darrington
2018-09-07 22:46 ` S12Z [new patchset] Simon Marchi
2018-09-08 4:18 ` John Darrington
2018-09-08 6:30 ` John Darrington
2018-09-08 21:37 ` Simon Marchi
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