gc old strip
This commit is contained in:
kristerw
parent
c9f75bc587
commit
411911d934
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@ -1,25 +0,0 @@
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# $NetBSD: Makefile,v 1.17 1997/10/18 15:04:56 mrg Exp $
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# @(#)Makefile 8.1 (Berkeley) 6/6/93
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PROG= strip
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proginstall:: .NOTMAIN hackinstall
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.PHONY: hackinstall
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.include <bsd.prog.mk>
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PROGNAME?= ${PROG}
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hackinstall:: ${DESTDIR}${BINDIR}/${PROGNAME}
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.if !defined(UPDATE)
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.PHONY: ${DESTDIR}${BINDIR}/${PROGNAME}
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.endif
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.if !defined(BUILD)
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${DESTDIR}${BINDIR}/${PROGNAME}: .MADE
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.endif
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.PRECIOUS: ${DESTDIR}${BINDIR}/${PROGNAME}
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${DESTDIR}${BINDIR}/${PROGNAME}: ${PROG}
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${INSTALL} -c -o ${BINOWN} -g ${BINGRP} -m 600 ${.ALLSRC} ${.TARGET}
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-if [ "${STRIPFLAG}" != "" ]; then ./strip ${.TARGET}; fi
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chmod ${BINMODE} ${.TARGET}
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-if [ "${COPY}" = "" ]; then rm -f ./strip; fi
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@ -1,77 +0,0 @@
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.\" $NetBSD: strip.1,v 1.6 1997/10/19 23:30:38 lukem Exp $
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.\"
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.\" Copyright (c) 1989, 1990, 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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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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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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.\" @(#)strip.1 8.1 (Berkeley) 6/6/93
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.\"
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.Dd June 6, 1993
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.Dt STRIP 1
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.Os
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.Sh NAME
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.Nm strip
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.Nd remove unnecessary information from executable files
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.Sh SYNOPSIS
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.Nm
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.Op Fl d
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.Op Fl x
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.Op Fl X
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.Ar file ...
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.Sh DESCRIPTION
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The
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.Nm
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utility
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deletes the relocation information and symbol table used by
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assemblers, loaders and debuggers.
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This significantly
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decreases the size of the installed binaries and saves disk space.
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.Pp
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The options are as follows:
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.Bl -tag -width Ds
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.It Fl d
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Delete only debugging and empty symbols.
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.It Fl X
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Delete only debugging, empty, and compiler identification symbols.
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.It Fl x
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Delete only debugging, empty, compiler identification, and local symbols.
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.El
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.Pp
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.Nm
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exits 0 on success and 1 if an error occurred.
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.Sh SEE ALSO
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.Xr cc 1 ,
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.Xr ld 1 ,
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.Xr stab 5
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.Sh HISTORY
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A
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.Nm
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command appeared in
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.At v6 .
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@ -1,322 +0,0 @@
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/* $NetBSD: strip.c,v 1.19 1998/02/20 09:27:20 mycroft Exp $ */
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/*
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* Copyright (c) 1988, 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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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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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1988, 1993\n\
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The Regents of the University of California. All rights reserved.\n");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)strip.c 8.3 (Berkeley) 5/16/95";
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#else
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__RCSID("$NetBSD: strip.c,v 1.19 1998/02/20 09:27:20 mycroft Exp $");
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#endif
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include <a.out.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <limits.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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typedef struct exec EXEC;
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typedef struct nlist NLIST;
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#define strx n_un.n_strx
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int main __P((int, char *[]));
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int main __P((int, char **));
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static int s_stab __P((const char *, int, EXEC *, struct stat *));
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static int s_sym __P((const char *, int, EXEC *, struct stat *));
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static void usage __P((void));
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static int xflag = 0;
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static int Xflag = 0;
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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int fd;
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EXEC *ep;
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struct stat sb;
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int (*sfcn)__P((const char *, int, EXEC *, struct stat *));
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int ch, errors;
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char *fn;
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sfcn = s_sym;
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while ((ch = getopt(argc, argv, "dxX")) != -1)
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switch(ch) {
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case 'x':
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xflag = 1;
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/*FALLTHROUGH*/
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case 'X':
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Xflag = 1;
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/*FALLTHROUGH*/
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case 'd':
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sfcn = s_stab;
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break;
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case '?':
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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errors = 0;
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#define ERROR(e) errno = e; errors |= 1; warn("%s:", fn); continue;
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while ((fn = *argv++) != NULL) {
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if ((fd = open(fn, O_RDWR)) < 0) {
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ERROR(errno);
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}
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if (fstat(fd, &sb)) {
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(void)close(fd);
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ERROR(errno);
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}
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if (sb.st_size < sizeof(EXEC)) {
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(void)close(fd);
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ERROR(EFTYPE);
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}
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if ((ep = (EXEC *)mmap(NULL, sb.st_size, PROT_READ|PROT_WRITE,
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MAP_FILE|MAP_SHARED, fd, (off_t)0)) == (EXEC *)-1) {
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(void)close(fd);
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ERROR(errno);
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}
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if (N_BADMAG(*ep)) {
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munmap((caddr_t)ep, sb.st_size);
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(void)close(fd);
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ERROR(EFTYPE);
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}
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errors |= sfcn(fn, fd, ep, &sb);
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munmap((caddr_t)ep, sb.st_size);
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if (close(fd)) {
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ERROR(errno);
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}
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}
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#undef ERROR
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exit(errors);
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}
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static int
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s_sym(fn, fd, ep, sp)
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const char *fn;
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int fd;
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EXEC *ep;
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struct stat *sp;
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{
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char *neweof;
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int zmagic;
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zmagic = ep->a_data &&
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(N_GETMAGIC(*ep) == ZMAGIC || N_GETMAGIC(*ep) == QMAGIC);
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/*
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* If no symbols or data/text relocation info and
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* the file data segment size is already minimized, quit.
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*/
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if (!ep->a_syms && !ep->a_trsize && !ep->a_drsize) {
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#if 0
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if (!zmagic)
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return 0;
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if (sp->st_size < N_TRELOFF(*ep))
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#endif
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return 0;
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}
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/*
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* New file size is the header plus text and data segments; OMAGIC
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* and NMAGIC formats have the text/data immediately following the
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* header. ZMAGIC format wastes the rest of of header page.
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*/
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neweof = (char *)ep + N_TRELOFF(*ep);
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#if 0
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/*
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* Unfortunately, this can't work correctly without changing the way
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* the loader works. We could cap it at one page, or even fiddle with
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* a_data and a_bss, but this only works for CLBYTES == NBPG. If we
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* are on a system where, e.g., CLBYTES is 8k and NBPG is 4k, and we
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* happen to remove 4.5k, we will lose. And we really don't want to
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* fiddle with pages, because that breaks binary compatibility. Lose.
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*/
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if (zmagic) {
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char *mineof;
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/*
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* Get rid of unneeded zeroes at the end of the data segment
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* to reduce the file size even more.
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*/
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mineof = (char *)ep + N_DATOFF(*ep);
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while (neweof > mineof && neweof[-1] == '\0')
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neweof--;
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}
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#endif
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/* Set symbol size and relocation info values to 0. */
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ep->a_syms = ep->a_trsize = ep->a_drsize = 0;
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/* Truncate the file. */
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if (ftruncate(fd, neweof - (char *)ep)) {
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warn("%s:", fn);
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return 1;
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}
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return 0;
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}
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static int
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s_stab(fn, fd, ep, sp)
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const char *fn;
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int fd;
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EXEC *ep;
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struct stat *sp;
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{
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int cnt, len;
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char *nstr, *nstrbase, *p, *strbase;
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NLIST *sym, *nsym;
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NLIST *symbase;
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/* Quit if no symbols. */
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if (ep->a_syms == 0)
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return 0;
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if (N_SYMOFF(*ep) >= sp->st_size) {
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warnx("%s: bad symbol table", fn);
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return 1;
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}
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/*
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* Initialize old and new symbol pointers. They both point to the
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* beginning of the symbol table in memory, since we're deleting
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* entries.
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*/
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sym = nsym = symbase = (NLIST *)((char *)ep + N_SYMOFF(*ep));
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/*
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* Allocate space for the new string table, initialize old and
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* new string pointers. Handle the extra long at the beginning
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* of the string table.
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*/
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strbase = (char *)ep + N_STROFF(*ep);
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if ((nstrbase = malloc((u_int)*(u_long *)strbase)) == NULL) {
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warn("%s", "");
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return 1;
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}
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nstr = nstrbase + sizeof(u_long);
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/*
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* Read through the symbol table. For each non-debugging symbol,
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* copy it and save its string in the new string table. Keep
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* track of the number of symbols.
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*/
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for (cnt = ep->a_syms / sizeof(NLIST); cnt--; ++sym) {
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/* debugging symbol? */
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if (sym->n_type & N_STAB)
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continue;
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/* empty symbol? */
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if (sym->strx == 0)
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continue;
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/* compute a pointer to its name */
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p = strbase + sym->strx;
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if (Xflag) {
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/* compiler identification? */
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if (!strcmp(p, "gcc_compiled."))
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continue;
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if (!strcmp(p, "gcc2_compiled."))
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continue;
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if (!strncmp(p, "___gnu_compiled_", 16))
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continue;
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/* Other -X tests? */
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}
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if (xflag) {
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/* static symbol? */
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if ((sym->n_type & N_EXT) == 0)
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continue;
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/* file name? */
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if ((sym->n_type & ~N_EXT) == N_FN)
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continue;
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/* Other -x tests? */
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}
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/* OK, copy the symbol. */
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*nsym = *sym;
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nsym->strx = nstr - nstrbase;
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len = strlen(p) + 1;
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memmove(nstr, p, len);
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nstr += len;
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++nsym;
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}
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/* Fill in new symbol table size. */
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ep->a_syms = (nsym - symbase) * sizeof(NLIST);
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/* Fill in the new size of the string table. */
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*(u_long *)nstrbase = len = nstr - nstrbase;
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/*
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* Copy the new string table into place. Nsym should be pointing
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* at the address past the last symbol entry.
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*/
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memmove((void *)nsym, nstrbase, len);
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free(nstrbase);
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/* Truncate to the current length. */
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if (ftruncate(fd, (char *)nsym + len - (char *)ep)) {
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warn("%s", fn);
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return 1;
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}
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return 0;
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}
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static void
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usage()
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{
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extern char *__progname;
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(void)fprintf(stderr, "Usage: %s [-dxX] file ...\n", __progname);
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exit(1);
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}
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Reference in New Issue