Remove kernbb(8) from the source tree.
It's been broken for several years and with all the binutils/toolchain changes in flight, it might make more sense to put efforts into dtrace and hwpmc instead. Discussed with: phk PR: bin/83558
This commit is contained in:
Ulrich Spörlein
parent
4b9b1e1163
commit
54e1a99c14
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# $FreeBSD$
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PROG= kernbb
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MAN= kernbb.8
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DPADD= ${LIBKVM}
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LDADD= -lkvm
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CFLAGS+= -I${.CURDIR}/../../contrib/gcc
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.include <bsd.prog.mk>
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@ -1,82 +0,0 @@
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.\" Copyright (c) 1983, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd May 22, 1995
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.Dt KERNBB 8
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.Os
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.Sh NAME
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.Nm kernbb
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.Nd generate a dump of the kernels basic-block profile buffers
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.Sh SYNOPSIS
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.Nm
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.Sh DESCRIPTION
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The
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.Nm
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utility is used to extract the basic-block profiling buffers of the running
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kernel into the files needed for the
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.Xr gcov 1
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tool.
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.Pp
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At least one source file in the running kernel must have been compiled
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with the
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.Fl Fl test-coverage
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and
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.Fl Fl profile-arcs
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options.
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.Pp
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The output is stored in the filenames compiled into the kernel by
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.Xr gcc 1 .
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If the absolute pathname cannot be written to, the directory part
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of the filename is discarded and the file stored in the current
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directory under its basename.
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.Pp
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The output files are named
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.Pa *.da ,
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and the
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.Xr gcov 1
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program will extract the counts and merge them with the source
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file to show actual execution counts.
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.Sh FILES
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.Bl -tag -width /boot/kernel/kernel -compact
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.It Pa /boot/kernel/kernel
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the default system
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.It Pa /dev/kmem
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the default memory
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.El
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.Sh SEE ALSO
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.Xr cc 1 ,
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.Xr gcov 1
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.Sh AUTHORS
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The
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.Nm
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utility was written by
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.An Poul-Henning Kamp ,
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along with the kernel-support.
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.Sh BUGS
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There are far too much magic and internal knowledge from GCC in this.
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@ -1,145 +0,0 @@
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/*
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* ----------------------------------------------------------------------------
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* "THE BEER-WARE LICENSE" (Revision 42):
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* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
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* can do whatever you want with this stuff. If we meet some day, and you think
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* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
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* ----------------------------------------------------------------------------
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <err.h>
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#include <fcntl.h>
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#include <kvm.h>
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#include <nlist.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/endian.h>
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typedef long long gcov_type;
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#define PARAMS(foo) foo
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#define ATTRIBUTE_UNUSED __unused
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#include "gcov-io.h"
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struct bbf {
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long checksum;
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int arc_count;
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u_long name;
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};
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struct bb {
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u_long zero_one;
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u_long filename;
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u_long counts;
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u_long ncounts;
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u_long next;
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u_long sizeof_bb;
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u_long funcs;
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};
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struct nlist namelist[] = {
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{ "bbhead", 0, 0, 0, 0 },
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{ NULL, 0, 0, 0, 0 }
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};
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kvm_t *kv;
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int
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main(int argc __unused, char **argv __unused)
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{
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int i, funcs;
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u_long l1,l2,l4;
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struct bb bb;
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struct bbf bbf;
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char buf[BUFSIZ], *p;
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gcov_type *q, *qr;
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FILE *f;
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kv = kvm_open(NULL,NULL,NULL,O_RDWR,"dnc");
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if (!kv)
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err(1,"kvm_open");
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i = kvm_nlist(kv,namelist);
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if (i)
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err(1,"kvm_nlist");
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l1 = namelist[0].n_value;
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kvm_read(kv,l1,&l2,sizeof l2);
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while(l2) {
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l1 += sizeof l1;
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kvm_read(kv,l2,&bb,sizeof bb);
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#if 0
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printf("%lx\n%lx\n%lx\n%lx\n%lx\n%lx\n%lx\n",
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bb.zero_one, bb.filename, bb.counts, bb.ncounts, bb.next,
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bb.sizeof_bb, bb.funcs);
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#endif
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funcs = 0;
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for (l4 = bb.funcs; ; l4 += sizeof (bbf)) {
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kvm_read(kv, l4, &bbf, sizeof(bbf));
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if (bbf.arc_count == -1)
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break;
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funcs++;
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}
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l2 = bb.next;
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kvm_read(kv, bb.filename, buf, sizeof(buf));
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p = buf;
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f = fopen(p, "w");
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if (f != NULL) {
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printf("Writing \"%s\"\n", p);
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} else {
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p = strrchr(buf, '/');
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if (p == NULL)
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p = buf;
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else
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p++;
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printf("Writing \"%s\" (spec \"%s\")\n", p, buf);
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f = fopen(p, "w");
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}
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if (f == NULL)
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err(1,"%s", p);
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__write_long(-123, f, 4);
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__write_long(funcs, f, 4);
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__write_long(4 + 8 + 8 + 4 + 8 + 8, f, 4);
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__write_long(bb.ncounts, f, 4);
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__write_long(0, f, 8);
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__write_long(0, f, 8);
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__write_long(bb.ncounts, f, 4);
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__write_long(0, f, 8);
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__write_long(0, f, 8);
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qr = malloc(bb.ncounts * 8);
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kvm_read(kv, bb.counts, qr, bb.ncounts * 8);
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q = qr;
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for (l4 = bb.funcs; ; l4 += sizeof (bbf)) {
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kvm_read(kv, l4, &bbf, sizeof(bbf));
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if (bbf.arc_count == -1)
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break;
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kvm_read(kv, bbf.name, buf, sizeof(buf));
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__write_gcov_string(buf, strlen(buf), f, -1);
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__write_long(bbf.checksum, f, 4);
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__write_long(bbf.arc_count, f, 4);
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for (i = 0; i < bbf.arc_count; i++) {
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__write_gcov_type(*q, f, 8);
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q++;
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}
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}
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fclose(f);
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free(qr);
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}
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return 0;
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}
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