From owner-svn-src-head@freebsd.org Sun Sep 29 22:34:02 2019 Return-Path: Delivered-To: svn-src-head@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id A1FD412CA72; Sun, 29 Sep 2019 22:34:02 +0000 (UTC) (envelope-from ray@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 46hL163qbgz43kZ; Sun, 29 Sep 2019 22:34:02 +0000 (UTC) (envelope-from ray@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4EC74210D2; Sun, 29 Sep 2019 22:34:02 +0000 (UTC) (envelope-from ray@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x8TMY2Mc090144; Sun, 29 Sep 2019 22:34:02 GMT (envelope-from ray@FreeBSD.org) Received: (from ray@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x8TMY260090143; Sun, 29 Sep 2019 22:34:02 GMT (envelope-from ray@FreeBSD.org) Message-Id: <201909292234.x8TMY260090143@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: ray set sender to ray@FreeBSD.org using -f From: Aleksandr Rybalko Date: Sun, 29 Sep 2019 22:34:02 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r352875 - head/contrib/elftoolchain/elfcopy X-SVN-Group: head X-SVN-Commit-Author: ray X-SVN-Commit-Paths: head/contrib/elftoolchain/elfcopy X-SVN-Commit-Revision: 352875 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 29 Sep 2019 22:34:02 -0000 Author: ray Date: Sun Sep 29 22:34:01 2019 New Revision: 352875 URL: https://svnweb.freebsd.org/changeset/base/352875 Log: ections into expected offset in binary format. Calculate binary file offset using address field, bacause software know only offset to known data, not where to load segment. With that patch, kernel .data section can have any alignment/offset - kernel boor fine. PR: 235391 Reviewed by: markj MFC after: 1 month Differential Revision: D21827 Modified: head/contrib/elftoolchain/elfcopy/binary.c Modified: head/contrib/elftoolchain/elfcopy/binary.c ============================================================================== --- head/contrib/elftoolchain/elfcopy/binary.c Sun Sep 29 20:44:13 2019 (r352874) +++ head/contrib/elftoolchain/elfcopy/binary.c Sun Sep 29 22:34:01 2019 (r352875) @@ -49,22 +49,23 @@ create_binary(int ifd, int ofd) Elf *e; Elf_Scn *scn; Elf_Data *d; + Elf64_Addr baseaddr; GElf_Shdr sh; - off_t base, off; + off_t baseoff, off; int elferr; if ((e = elf_begin(ifd, ELF_C_READ, NULL)) == NULL) errx(EXIT_FAILURE, "elf_begin() failed: %s", elf_errmsg(-1)); - base = 0; - if (lseek(ofd, base, SEEK_SET) < 0) + baseoff = 0; + if (lseek(ofd, baseoff, SEEK_SET) < 0) err(EXIT_FAILURE, "lseek failed"); /* * Find base offset in the first iteration. */ - base = -1; + baseoff = -1; scn = NULL; while ((scn = elf_nextscn(e, scn)) != NULL) { if (gelf_getshdr(scn, &sh) == NULL) { @@ -76,14 +77,16 @@ create_binary(int ifd, int ofd) sh.sh_type == SHT_NOBITS || sh.sh_size == 0) continue; - if (base == -1 || (off_t) sh.sh_offset < base) - base = sh.sh_offset; + if (baseoff == -1 || (off_t) sh.sh_offset < baseoff) { + baseoff = sh.sh_offset; + baseaddr = sh.sh_addr; + } } elferr = elf_errno(); if (elferr != 0) warnx("elf_nextscn failed: %s", elf_errmsg(elferr)); - if (base == -1) + if (baseoff == -1) return; /* @@ -110,8 +113,8 @@ create_binary(int ifd, int ofd) if (d->d_buf == NULL || d->d_size == 0) continue; - /* lseek to section offset relative to `base'. */ - off = sh.sh_offset - base; + /* lseek to section offset relative to `baseaddr'. */ + off = sh.sh_addr - baseaddr; if (lseek(ofd, off, SEEK_SET) < 0) err(EXIT_FAILURE, "lseek failed");