automake:
Notes:
* I didn't yet touch the cpu subdirectory. I still need some time to
think on how to handle them.
* I probably will wait for the next snapshot before mailing more patches
(I still have some pending), giving you a chance to apply them and me a
chance to become target of the bullets which will probably be aimed at
me after these modifications.
Some Makefile.ins depend on gcc by hard-coded gcc-specific compiler
flags:
-g added to CFLAGS /LDFLAGS in
> find . -name Makefile.in -exec grep -l ' \-g' {} \;
./c/src/lib/libbsp/i386/i386ex/startup/Makefile.in
./c/src/lib/libbsp/i386/pc386/tools/Makefile.in
-Wall added CFLAGS in
> find . -name Makefile.in -exec grep -l ' \-Wall' {} \;
./c/src/exec/score/tools/sh/Makefile.in
./c/src/lib/libbsp/i386/pc386/tools/Makefile.in
Both -g and -Wall should not be used in any Makefile.in (Yes, I know,
tools/sh/Makefile.in was written by me :-).
I'd like to propose to remove these flags from the files mentioned
above.
directory in preparation for automake:
Here is a shell script which reorganizes some parts of the exec/posix
source tree.
This shell scripts moves include files below exec/posix to different
locations than now. It doesn't yet apply automake, but still use the old
autoconf configuration scheme. It doesn't influence the build scheme at
all (unless I corrupted something), only the location of the header
files is different, which would ease applying automake later.
The purpose of this shell script is to demonstrate the style of
structural changes I would like to see in rtems in near future to
prepare a smooth transition to automake. Then CC could pickup rtems'
header files from their location inside of the source tree in future,
instead of the build tree as it is done now.
In case you would accept this patch/script, there would be more similiar
ones to come.
From: Eric Norum <eric@skatter.usask.ca>
Date: Sat, 5 Dec 98 13:20:51 -0600
What do you think of this patch? It implements your `tap'
suggestion in a way that adds support for all ethernet devices with
no driver modifications. I also added a return value from the tap
function. If the return value is zero, the packet will be passed up
the chain as usual. If the return value is non-zero the mbuf holding
the packet will be freed and the packet will be dropped.
If you like it, please submit it to Joel.
I guess there needs to be an addition to the network documentation
describing the additional ioctl's -- and a big warning that the tap
function is called from a context that holds the network semaphore.
Here is Eric's patch. I've tested it a bit, and made a couple of
trivial changes. This is certainly better than mine: it should work
for all Ethernet drivers.
==================================================
The only concern I have about this patch is that the tap function may
want to fiddle with the mbuf, calling functions like m_pullup and the
like. If those force the networking code to rearrange the mbuf
structure, then the caller's call to m_freem may crash. I don't know
if this is a realistic concern--I don't know enough about the mbuf
layer.
RTEMS permits using the SO_SNDTIMEO and SO_RCVTIMEO socket options to
set a timeout for most socket I/O operations. However, in RTEMS
4.0.0, those options do not affect connect or accept. I don't know of
any way to put a timeout on those calls in RTEMS 4.0.0; can anybody
point to one.
Since it is frequently useful to have a timeout on accept, and
sometimes useful to have a timeout on connect shorter than the BSD
system default of 75 seconds, the following patch causes SO_RCVTIMEO
to affect connect and accept.
and RPC support to RTEMS. Thanks. :) Email follows:
Hello,
For Xmas, here is the Remote Debugger on RTEMS !
Here are 2 patches for the Remote Debugger on RTEMS for pc386 from Linux
host :
- one for RTEMS it self,
- one for GDB-4.17.
1/ RTEMS patch
--------------
This patch adds 2 libraries :
- a simplified SUN RPC library
- the Remote Debugger library
The configuration command is the following :
../rtems4/configure --target=i386-rtemself --enable-rtemsbsp=pc386
--enable-rdbg
The SUN RPC library is built only if networking is set.
The RDBG library is built if networking and enable-rdbg are set.
The function used to initialize the debugger is :
rtems_rdbg_initialize ();
A special function has been created to force a task to be
in a "debug" state : enterRdbg().
The use of this function is not mandatory.
2/ GDB-4.17 patch
-----------------
This patch create a new RTEMS target for GDB-4.17.
The configuration command is the following :
./configure --enable-shared --target=i386RTEMS
To connect to a target, use :
target rtems [your_site_address]
Then, attach the target using : attach 1
And... Debug ;)
You can obtain the original GDB-4.17 on
ftp://ftp.debian.org/debian/dists/stable/main/source/devel/gdb_4.17.orig.tar.gz
This has been tested from a Debian 2.0.1 linux host.
