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.\" $NetBSD: ctfmerge.1,v 1.5 2024/05/04 18:20:44 uwe Exp $
.\"
.\" Copyright (c) 2010 The FreeBSD Foundation
.\" All rights reserved.
.\"
.\" This software was developed by Rui Paulo under sponsorship from the
.\" FreeBSD Foundation.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" $FreeBSD: head/cddl/usr.bin/ctfmerge/ctfmerge.1 239969 2012-09-01 06:23:13Z joel $
.\"
.Dd May 4, 2024
.Dt CTFMERGE 1
.Os
.Sh NAME
.Nm ctfmerge
.Nd merge several CTF data sections into one
.Sh SYNOPSIS
.Nm
.Op Fl fgstv
.Fl l Ar label
.Fl L Ar labelenv
.Fl o Ar outfile
.Ar
.Nm
.Op Fl fgstv
.Fl l Ar label
.Fl L Ar labelenv
.Fl o Ar outfile
.Fl d Ar uniqfile
.Op Fl g
.Op Fl D Ar uniqlabel
.Ar
.Nm
.Op Fl fgstv
.Fl l Ar label
.Fl L Ar labelenv
.Fl o Ar outfile
.Fl w Ar withfile
.Ar
.Nm
.Op Fl g
.Fl c Ar srcfile
.Ar destfile
.Sh DESCRIPTION
The
.Nm
utility merges several CTF data sections from several files into one
output file, unifying common data.
.Pp
The following options are available:
.Bl -tag -width Fl
.It Fl f
Match global symbols to global CTF data.
.It Fl g
Don't delete the original debugging sections.
.It Fl s
Use the
.Ql .dynsym
ELF section instead of the
.Ql .symtab
ELF section.
.It Fl t
Make sure that all object files have a CTF section.
.It Fl v
Enable verbose mode.
.It Fl l Ar label
Sets the label as
.Ar label .
.It Fl L Ar labelenv
Instructs
.Nm
to read the label from the environment variable
.Ar labelenv .
.It Fl o Ar outfile
Use
.Ar outfile
to store the merged CTF data.
.It Fl d Ar uniqfile
Uniquify against
.Ar uniqfile .
.It Fl d Ar uniqlabel
Uniquify against label
.Ar uniqlabel
.It Fl w Ar withfile
Additive merge with
.Ar withfile .
.It Fl c Ar srcfile Ar destfile
Copy CTF data from
.Ar srcfile
into
.Ar destfile .
.El
.Sh ENVIRONMENT VARIABLES
The following environment variables are used in
.Nm :
.Bl -tag -width Ev
.It Ev CTFMERGE_TERMINATE_NO_UNLINK
Don't remove temporary files on exit, so that they can be examined
for debugging.
.It Ev CTFMERGE_MAX_SLOTS
Number of round-robin slots in the input queue that it is processed by
worker threads.
Each slot represents a file batch
.Pq default 5 .
.It Ev CTFMERGE_PHASE1_BATCH_SIZE
Number of files in a slot that are needed before processing starts
.Pq default 8 .
.It Ev CTFMERGE_NUM_THREADS
Set the number of worker threads.
If the number of processors can be determined it defaults to
.Fo min
.Fa "processors\|*\|3\|/\|2"
.Fa "nslots"
.Fc
if not it defaults to 2.
.It Ev CTFMERGE_INPUT_THROTTLE
Max queue size to queue
.Pq defaults to 10 .
.It Ev CTFMERGE_DEBUG_LEVEL
Increase debugging verbosity
.Pq maximum is 3 .
.El
.Sh EXIT STATUS
.Ex -std
.Sh SEE ALSO
.Xr ctfconvert 1 ,
.Xr ctfdump 1
.Sh HISTORY
The
.Nm
utility first appeared in
.Fx 7.0 .
.Sh AUTHORS
The CTF utilities came from OpenSolaris.
|
