From owner-svn-src-all@freebsd.org Sat Dec 8 14:58:18 2018 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 304A6131A827; Sat, 8 Dec 2018 14:58:18 +0000 (UTC) (envelope-from mmel@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id C64B38258D; Sat, 8 Dec 2018 14:58:17 +0000 (UTC) (envelope-from mmel@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 A74E8239E9; Sat, 8 Dec 2018 14:58:17 +0000 (UTC) (envelope-from mmel@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id wB8EwHkZ071571; Sat, 8 Dec 2018 14:58:17 GMT (envelope-from mmel@FreeBSD.org) Received: (from mmel@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id wB8EwHVM071570; Sat, 8 Dec 2018 14:58:17 GMT (envelope-from mmel@FreeBSD.org) Message-Id: <201812081458.wB8EwHVM071570@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: mmel set sender to mmel@FreeBSD.org using -f From: Michal Meloun Date: Sat, 8 Dec 2018 14:58:17 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r341738 - head/libexec/rtld-elf/aarch64 X-SVN-Group: head X-SVN-Commit-Author: mmel X-SVN-Commit-Paths: head/libexec/rtld-elf/aarch64 X-SVN-Commit-Revision: 341738 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: C64B38258D X-Spamd-Result: default: False [-2.95 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.997,0]; NEURAL_HAM_SHORT(-0.96)[-0.963,0]; NEURAL_HAM_LONG(-0.99)[-0.990,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] X-Rspamd-Server: mx1.freebsd.org X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 08 Dec 2018 14:58:18 -0000 Author: mmel Date: Sat Dec 8 14:58:17 2018 New Revision: 341738 URL: https://svnweb.freebsd.org/changeset/base/341738 Log: Implement R_AARCH64_TLS_DTPMOD64 and A_AARCH64_TLS_DTPREL64 relocations. Although these are slightly obsolete in favor of R_AARCH64_TLSDESC, gcc -mtls-dialect=trad still use them. Please note that definition of TLS_DTPMOD64 and TLS_DTPREL64 are incorrectly exchanged in GNU binutils. TLS_DTPREL64 should be encoded to 1028 (as is defined in ARM ELF ABI) but binutils encode it to 1029. And vice versa, TLS_DTPMOD64 should be encoded to 1029 but binutils encode it to 1028. While I'm in, add also R_AARCH64_NONE. It can be produced as result of linker relaxation. MFC after: 1 week Modified: head/libexec/rtld-elf/aarch64/reloc.c Modified: head/libexec/rtld-elf/aarch64/reloc.c ============================================================================== --- head/libexec/rtld-elf/aarch64/reloc.c Sat Dec 8 14:54:33 2018 (r341737) +++ head/libexec/rtld-elf/aarch64/reloc.c Sat Dec 8 14:58:17 2018 (r341738) @@ -223,6 +223,8 @@ reloc_plt(Obj_Entry *obj) case R_AARCH64_IRELATIVE: obj->irelative = true; break; + case R_AARCH64_NONE: + break; default: _rtld_error("Unknown relocation type %u in PLT", (unsigned int)ELF_R_TYPE(rela->r_info)); @@ -391,6 +393,8 @@ reloc_non_plt(Obj_Entry *obj, Obj_Entry *obj_rtld, int case R_AARCH64_ABS64: case R_AARCH64_GLOB_DAT: case R_AARCH64_TLS_TPREL64: + case R_AARCH64_TLS_DTPREL64: + case R_AARCH64_TLS_DTPMOD64: def = find_symdef(ELF_R_SYM(rela->r_info), obj, &defobj, flags, cache, lockstate); if (def == NULL) @@ -478,8 +482,23 @@ reloc_non_plt(Obj_Entry *obj, Obj_Entry *obj_rtld, int *where = def->st_value + rela->r_addend + defobj->tlsoffset; break; + + /* + * !!! BEWARE !!! + * ARM ELF ABI defines TLS_DTPMOD64 as 1029, and TLS_DTPREL64 + * as 1028. But actual bfd linker and the glibc RTLD linker + * treats TLS_DTPMOD64 as 1028 and TLS_DTPREL64 1029. + */ + case R_AARCH64_TLS_DTPREL64: /* efectively is TLS_DTPMOD64 */ + *where += (Elf_Addr)defobj->tlsindex; + break; + case R_AARCH64_TLS_DTPMOD64: /* efectively is TLS_DTPREL64 */ + *where += (Elf_Addr)(def->st_value + rela->r_addend); + break; case R_AARCH64_RELATIVE: *where = (Elf_Addr)(obj->relocbase + rela->r_addend); + break; + case R_AARCH64_NONE: break; default: rtld_printf("%s: Unhandled relocation %lu\n",