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From: Lucretia <laguest9000@googlemail.com>
Newsgroups: comp.lang.ada
Subject: Re: understanding runtime support
Date: Tue, 15 May 2012 07:55:55 -0700 (PDT)
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Date: 2012-05-15T07:55:55-07:00
List-Id: <comp.lang.ada>

Having spoken to you on IRC and email about this, I know what you are tryin=
g to do. Here are your options:

1) Use an existing OS and build GNAT to target that for your hardware.
2) Use bare metal GNAT - which isn't easy.

As for 1, you have a number of options:

* RTEMS
* MarteOS
* Linux (built for embedded target) + UClibc + GNAT

Each will require some work to target your hardware, as they will require d=
rivers written to access the hardware - you would have to do this yourself =
anyway for bare metal programming.

Linux has been built for m68k machines, GNAT builds on Linux and would be t=
rivial to add m68k for Linux, even though I remember having GNAT on an Amig=
a for both Linux and AmigaOS years ago.

If you went bare metal compiler, you would need to define what you needed i=
n the runtime. Do you really need tasking? Do you really need full exceptio=
n handling? If not, you can just have local exceptions which will call last=
_chance_handler anytime something goes wrong, in that procedure, you can do=
 whatever you like, drop into remote gdb, dump the regs over serial, etc.

Luke.