From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM
	autolearn=ham autolearn_force=no version=3.4.4
X-Google-Thread: a07f3367d7,3e070dca458e63a6
X-Google-Attributes: gida07f3367d7,public,usenet
X-Google-NewGroupId: yes
X-Google-Language: ENGLISH,ASCII-7-bit
X-Received: by 10.224.190.193 with SMTP id dj1mr10760526qab.6.1358783550355;
        Mon, 21 Jan 2013 07:52:30 -0800 (PST)
X-Received: by 10.49.75.9 with SMTP id y9mr3919786qev.9.1358783550310; Mon, 21
 Jan 2013 07:52:30 -0800 (PST)
Path: 
 k2ni1457qap.0!nntp.google.com!p13no3933913qai.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail
Newsgroups: comp.lang.ada
Date: Mon, 21 Jan 2013 07:52:30 -0800 (PST)
In-Reply-To: <f5067c0a-3459-4595-b927-9b52caf47415@googlegroups.com>
Complaints-To: groups-abuse@google.com
Injection-Info: glegroupsg2000goo.googlegroups.com;
 posting-host=90.194.162.175;
 posting-account=L2-UcQkAAAAfd_BqbeNHs3XeM0jTXloS
NNTP-Posting-Host: 90.194.162.175
References: <dd600937-5e96-4bde-b034-d54411ae4162@googlegroups.com>
 <kd9u6h$9a7$2@dont-email.me> <kdappq$k70$1@dont-email.me>
 <90d941f8-4e9f-485d-b2f6-89627d69ac79@googlegroups.com>
 <wccip6ti7bw.fsf@shell01.TheWorld.com>
 <50fd3543$0$6548$9b4e6d93@newsspool4.arcor-online.net>
 <263569d4-2e54-4c2f-886e-e01c8a9d03ae@googlegroups.com>
 <f5067c0a-3459-4595-b927-9b52caf47415@googlegroups.com>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <8c72fc78-46f3-4865-81c5-433dd6d61633@googlegroups.com>
Subject: Re: More Ganssle on Ada
From: Lucretia <laguest9000@googlemail.com>
Injection-Date: Mon, 21 Jan 2013 15:52:30 +0000
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
Date: 2013-01-21T07:52:30-08:00
List-Id: <comp.lang.ada>

Ok, let's sort this once and for all.

Building an ARM Linux compiler is doable now. The only problem with it is t=
hat it doesn't use the unwind-arm.[ch] files in gcc/config/arm but does imp=
lement exceptions with setjmp/longjmp.

I ave tried to sort this out, it requires someone with more knowledge of th=
e RTS than me. Basically, what needs to be done to sort this out is to move=
 the current DWARF EH code into a new package, and create an ARM equivalent=
, this is because the standard unwind and the unwind-arm stuff is very diff=
erent and the data would be wrong on the Ada side.

I submitted a patch to the GCC ML which does the first part and kind of wor=
ks, but fails in the end. The response from AdaCore was something along the=
 lines "you need to construct and ARM specific exception object," thanks, v=
ery helpful.

I have built the meta-ada layer for Yocto also, but this doesn't build shar=
ed libs at this time as the compiler just won't do it, not sure why at this=
 time.

I have built arm-eabi-none-elf compilers as well and used it for bare metal=
 programming.

So, it's doable, but limited.

Luke.