Abstract out the "print a human readable list of all the
valid log categories" functionality which is currently duplicated
in three separate places. (We leave the monitor.c help_cmd()
implementation as-is since it wants to send the message to
the monitor and add its own information.)
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NAndreas Färber <afaerber@suse.de>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

The qemu_log() functionality is no longer specific to TCG CPU debug logs.
Rename cpu_set_log_filename() to qemu_set_log_filename() and drop the
pointless wrapper set_cpu_log_filename().
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NAndreas Färber <afaerber@suse.de>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>

Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>

Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Add a new category for device models to log guest behaviour
which is likely to be a guest bug of some kind (accessing
nonexistent registers, reading 32 bit wide registers with
a byte access, etc). Making this its own log category allows
those who care (mostly guest OS authors) to see the complaints
without bothering most users.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

5726c27f broke
x86 specific options and user emulation specific stdio buffering.

Always enable all log items. They may not be useful for non-x86 targets,
but there's no harm either.

Fix user emulation buffering by passing around a flag.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Add new log category (LOG_UNIMP) for unimplemented functionality.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Don't use global variables directly but via accessor functions. Rename globals.

Convert macros to functions, add GCC format attributes.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Move logging functions from exec.c to qemu-log.c,
compile it only once.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>