Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This is a copy of pp_printf, that originated from ppsi's diagnostic
code and is now a separate package, with a few more features.
The upstream repository is git://gitorious.org/rubi/pp-printf.git .
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This patch-set removes most of the awful pp_ libc replacements (like
pp_memcpy) that I used in the initial ptp-proposal project.  I now
think using standard names is better and easier. The build for all
architectures has no conflicts with this approah (all commits build).

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Even the freestanding lm32 compiler has <string.h> (because gcc builds
newlib by default as a minimal fallback).  Since I want to get rid of
pp_strlen and such stuff, we'd better include <string.h>, win size_t
and use the standard definitions for standard functions.

When we port to systems with no <string.h> we can provide it inside
its own arch- directory. So no harm is done and the code is simplified.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This file is meant to share libc functions among non-libc-using
architectures.  In this commit it still exports the pp_* version,
which are removed later in this patch-set.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

If the user has WRPCSW_ROOT in the environment, build for arch-spec
as well, because we can refer to wrpc-sw for drivers.  When building
for spec, build the whiterabbit extension as well.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Trivial changes: exit code should not be 0 on error, we should exit
where we say so to the user and give more informative context.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This is the verbatim copy of what I wrote as example code for an
article about time stamping. It's called "mini time protocol".  Some
of the code, in turn, comes from my previous experiments with White
Rabbit.

I'd better have the programs here as I use them often. As time permits
I'll add some more features and documentation in the ppsi manual.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This program monitors clock_monotonic and clock_realtime every 10ms
(or a different time lapse passed on the command line).

Whenever the difference between them is more than 0.5ms apart from the
previously-reported difference, it prints the current difference.  All
such differences are relative to the initial offset of the two clocks,
when the program started. The difference is prefixed with the current
date and time, to help logging.

This is something I already had in my toolbox, so I could see the leap
second that occurred on Jun 30th 2012.

Example:
   tornado.root# ./tools/chktime &
   [1] 23761
   ./tools/chktime: looping every 10 millisecs

   tornado.root# ./tools/jmptime .003
   Requesting time-jump: 0.003000 seconds

      13-02-11-12:22:44:       2997 us

   tornado.root# ./tools/jmptime .003
   Requesting time-jump: 0.003000 seconds

      13-02-11-12:22:52:       5994 us

   tornado.root# ./tools/jmptime -.006
   Requesting time-jump: -0.006000 seconds

      13-02-11-12:22:58:        -10 us
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Like adjtime (previous commit), this is used to adjust the local time,
but in this case the program performs a time jump (warp) using
settimeofday().
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This simple tool requests a time adjustment, specified in seconds
expressed as a floating point values ("0.001", "-.2", "-4" ...).

It can be used to force time differences between hosts while checking
how ppsi (or other time daemons) work.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This merges the work of Danilo Sabato, who made the ppsi daemon build
both on i386 and x86-64 in a lib-less fashion.  Such architectures
are meant to show ppsi running on bare metal, and are test benches
for any changes to the core, even for people who cannot build and run
on real bare-metal hosts.

According to configuration, pp_diag_verbosity can be "const" or not
(having it const saves a lot of space and we need it in our
white-rabbit core).

This avoids errors when building for all architectures, with or
without CONFIG_PPSI_RUNTIME_VERBOSITY.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

arch-bare-x86-64: bugfix for packet receive
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>