Allow overriding LIBCRT0 in mk.conf

branches: 1.2.4; 1.2.10;
* attempt to make this endian-independent (tested only on el)
* write via libpcap (since i thought there would be some fancy
api to deal with endianness. after doing 80% of the work i
noticed there wasn't, but went ahead anyway)

shmif(4) bus dumping utility

Fix xref.

shmif(4) bus dumping utility

improve error messages, minor cleanups.

branches: 1.18.16;
Use autoconf for rump kernel posix hypercall layer.

This gets rid of homegrown hacks and puts all probes in one place.

Tested for NetBSD (build.sh + anita) and Linux (buildrump.sh)

Might as well byteswap when we assign to local variables instead of when
we use said variables.

quasi-cosmetic nit to previous: limit variable scope

Add compat for bus version 2.

Fixes tests, but, XXX, should add tests for bus version 3.

make name more descriptive: SWAPME -> FIXENDIAN
no functional change

fix tyop in error message

support endian-independent operation on all platforms

branches: 1.11.4;
make portable

RCS Id police stings again!

If creating a pcap dump to stdout, print metainfo to stderr.

branches: 1.8.2; 1.8.8;
Use __dead

aaaand actually make the logic clause correct

make the code also correctly correct, not just xxxgcc'ly correct

* attempt to make this endian-independent (tested only on el)
* write via libpcap (since i thought there would be some fancy
api to deal with endianness. after doing 80% of the work i
noticed there wasn't, but went ahead anyway)

Apropos, pcap doesn't export the on-disk pcap packet header but
only the in-memory one. Since the in-memory one uses struct timeval
and the on-disk one uses 32bit time_t, things didn't work so well
on -current. Generate a suitable local packetheader to fix things.
(don't think it's worth writing via libpcap for something as simple
as this)

noticed both by bouyer and the shmif_dumpbus test

Add some asserts to make sure the bus offset isn't beyond what we
mapped. (I had a very interesting time last night trying to figure
out what was going when things apparently got compiled with a 64bit
time_t on nb5. this caused only 4k of the bus file to be mapped...)

print processing details only if we've not outputting a pcap file
to stdout

shmif(4) bus dumping utility