From: Simon Wright <simon@pushface.org>
Subject: STM32F4 GNAT Run Time System - roadmap
Date: Tue, 09 Jun 2015 13:02:22 +0100
Date: 2015-06-09T13:02:22+01:00 [thread overview]
Message-ID: <lyzj49qecx.fsf@pushface.org> (raw)
Looking for some input on priorities for work.
* Standard library packages.
* Other MCUs.
* Finalization.
* ?
Standard library packages
-------------------------
An obvious omission is the rest of the Ada.Containers.Bounded* packages:
Doubly_Linked_Lists
Ordered_Maps
Hashed_Sets
Ordered_Sets
Multiway_Trees
Synchronized_Queues
Priority_Queues
Any other nice-to-haves? (I haven't looked at Annex G, might be
problematic!)
Other MCUs
----------
STM have just released a significant number of affordable Nucleo
development kits. The NUCLEO-F091RC has 48 MHz Cortex-M0 core, 256-KB
Flash, 32-KB SRAM, which would just-about take my current testbed
program; for the princely sum of UKP7.94 + p&p, 88 in stock in UK for
next day delivery from Farnell[0].
The problem with this is that different MCUs require different compiler
options, and building GCC for ARM with multilibs is only supported in
the ARM fork at [1]; so far there are only GCC 4.9-based releases. GCC
4.9 is a perfectly competent compiler, of course.
Finalization
------------
It would be very nice to be able to use the generalized container
iterators of Ada 2012 (generalized array iterators are already OK).
They require finalization: I've implemented finalization and generalized
iteration over Bounded_Vectors in the 'finalization' branch at [2].
Unfortunately, adding finalization to a restricted runtime triggers bugs
in GCC.
I've raised two GCC PRs; "gnatbind generates invalid code when
finalization is enabled in restricted runtime"[3], and "Front-end error
if exception propagation disabled"[4].
=====================================================================
[0] http://uk.farnell.com/stm32-mcu-nucleo-board-flexible-prototyping
[1] https://launchpad.net/gcc-arm-embedded
[2]
https://sourceforge.net/p/stm32f4-gnat-rts/code/ci/finalization/tree/
[3] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66205
[4] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66242
next reply other threads:[~2015-06-09 12:02 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-09 12:02 Simon Wright [this message]
2015-06-09 19:44 ` STM32F4 GNAT Run Time System - roadmap Tero Koskinen
2015-06-12 17:31 ` MIchael Erdmann
2015-06-12 18:19 ` Simon Wright
2015-06-09 20:08 ` jan.de.kruyf
2015-06-10 17:47 ` Simon Wright
2015-06-10 19:54 ` jan.de.kruyf
2015-06-10 21:11 ` Simon Wright
2015-06-10 8:19 ` jan.de.kruyf
2015-06-10 8:24 ` jan.de.kruyf
2015-06-10 17:55 ` Simon Wright
2015-06-10 19:30 ` jan.de.kruyf
2015-06-10 11:20 ` Brian Drummond
2015-06-10 21:19 ` Simon Wright
2015-06-11 10:10 ` Brian Drummond
2015-06-13 13:21 ` Jedi Tek'Unum
2015-06-13 14:15 ` Dmitry A. Kazakov
2015-06-13 14:55 ` Simon Wright
2015-06-13 17:43 ` Jedi Tek'Unum
2015-12-06 18:34 ` Simon Wright
2015-12-07 10:39 ` Brian Drummond
2016-01-28 20:52 ` Simon Wright
2016-01-30 14:21 ` Brian Drummond
2015-12-07 15:13 ` Jere
2015-12-07 16:31 ` Simon Wright
2015-12-07 16:49 ` Simon Wright
2015-12-07 17:56 ` Jere
2015-12-07 22:02 ` Simon Wright
2015-12-08 14:03 ` Jere
2015-12-08 15:07 ` Tero Koskinen
2015-12-09 1:46 ` Jere
2015-12-08 2:11 ` Randy Brukardt
2015-12-09 18:46 ` Simon Clubley
2015-12-09 22:47 ` Randy Brukardt
2015-12-10 18:22 ` Simon Clubley
2015-12-11 14:59 ` AI12-0128 (was: STM32F4 GNAT Run Time System - roadmap) Simon Wright
2015-12-11 21:18 ` Randy Brukardt
2015-06-10 15:20 ` STM32F4 GNAT Run Time System - roadmap Patrick Noffke
2015-06-15 19:03 ` Simon Wright
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