From patchwork Mon Feb 5 21:22:16 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "H.J. Lu" X-Patchwork-Id: 869579 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=sourceware.org (client-ip=209.132.180.131; helo=sourceware.org; envelope-from=libc-alpha-return-90016-incoming=patchwork.ozlabs.org@sourceware.org; receiver=) Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; secure) header.d=sourceware.org header.i=@sourceware.org header.b="YsB0nOiC"; dkim-atps=neutral Received: from sourceware.org (server1.sourceware.org [209.132.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3zb0st6Yf8z9sRV for ; Tue, 6 Feb 2018 08:22:26 +1100 (AEDT) DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:date:from:to:subject:message-id:reply-to :mime-version:content-type; q=dns; s=default; b=uV3DicpO3rfSlbZk umYqia8XdwdComeQMtalausSHG0+gI5UkAoE9apxKhys2KbibeT7Ebe6/nFAlWKo IMJrA33SUUlnHAedjRjppVm6DbLfCQc6AGXOK8/lqYautEe7YBVpbURbEeK5SwvT ned2xOTgRo5cCmVSBSJfrX6Lels= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:date:from:to:subject:message-id:reply-to :mime-version:content-type; s=default; bh=HguvbgwbL4+sr0Yjkveq3g NIf6M=; b=YsB0nOiCcmzGh9PfM1Dk1KRtY3nFdPkP5hpG+07gEKbhcicLeaIXMM exFY3Z8e/RcW+9AP65XDk/P/qUCibrQa5DjEOFzGnAbwMK1RDf6wE/7Q9Iyt1FFV +O6vKoA7XBbG4dgRlVIFkJyZ0USKJx5Qq5WBbOwwibvOQIADzobRg= Received: (qmail 69241 invoked by alias); 5 Feb 2018 21:22:21 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 69229 invoked by uid 89); 5 Feb 2018 21:22:20 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-24.7 required=5.0 tests=AWL, BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, KAM_LAZY_DOMAIN_SECURITY, NO_DNS_FOR_FROM, T_RP_MATCHES_RCVD autolearn=ham version=3.3.2 spammy= X-HELO: mga01.intel.com X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False X-ExtLoop1: 1 Date: Mon, 5 Feb 2018 13:22:16 -0800 From: "H.J. Lu" To: GNU C Library Subject: [PATCH] Use ADDRIDX with DT_GNU_HASH Message-ID: <20180205212216.GA45977@intel.com> Reply-To: "H.J. Lu" MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.9.1 (2017-09-22) The only differences in ld.so are line numbers for asserts. OK for master? H.J. Reviewed-by: Jonathan Nieder --- * elf/dl-addr.c (determine_info): Use ADDRIDX with DT_GNU_HASH. * elf/dl-lookup.c (_dl_setup_hash): Likewise. * elf/get-dynamic-info.h (elf_get_dynamic_info): Likewise. --- elf/dl-addr.c | 3 +-- elf/dl-lookup.c | 8 ++------ elf/get-dynamic-info.h | 3 +-- 3 files changed, 4 insertions(+), 10 deletions(-) diff --git a/elf/dl-addr.c b/elf/dl-addr.c index 60073dcee6..2250617a73 100644 --- a/elf/dl-addr.c +++ b/elf/dl-addr.c @@ -42,8 +42,7 @@ determine_info (const ElfW(Addr) addr, struct link_map *match, Dl_info *info, ElfW(Word) strtabsize = match->l_info[DT_STRSZ]->d_un.d_val; const ElfW(Sym) *matchsym = NULL; - if (match->l_info[DT_ADDRTAGIDX (DT_GNU_HASH) + DT_NUM + DT_THISPROCNUM - + DT_VERSIONTAGNUM + DT_EXTRANUM + DT_VALNUM] != NULL) + if (match->l_info[ADDRIDX (DT_GNU_HASH)] != NULL) { /* We look at all symbol table entries referenced by the hash table. */ diff --git a/elf/dl-lookup.c b/elf/dl-lookup.c index 41dced0e19..401bc87c90 100644 --- a/elf/dl-lookup.c +++ b/elf/dl-lookup.c @@ -936,14 +936,10 @@ _dl_setup_hash (struct link_map *map) { Elf_Symndx *hash; - if (__glibc_likely (map->l_info[DT_ADDRTAGIDX (DT_GNU_HASH) + DT_NUM - + DT_THISPROCNUM + DT_VERSIONTAGNUM - + DT_EXTRANUM + DT_VALNUM] != NULL)) + if (__glibc_likely (map->l_info[ADDRIDX (DT_GNU_HASH)] != NULL)) { Elf32_Word *hash32 - = (void *) D_PTR (map, l_info[DT_ADDRTAGIDX (DT_GNU_HASH) + DT_NUM - + DT_THISPROCNUM + DT_VERSIONTAGNUM - + DT_EXTRANUM + DT_VALNUM]); + = (void *) D_PTR (map, l_info[ADDRIDX (DT_GNU_HASH)]); map->l_nbuckets = *hash32++; Elf32_Word symbias = *hash32++; Elf32_Word bitmask_nwords = *hash32++; diff --git a/elf/get-dynamic-info.h b/elf/get-dynamic-info.h index d1bbd817be..4b1ea7c407 100644 --- a/elf/get-dynamic-info.h +++ b/elf/get-dynamic-info.h @@ -110,8 +110,7 @@ elf_get_dynamic_info (struct link_map *l, ElfW(Dyn) *temp) # endif ADJUST_DYN_INFO (DT_JMPREL); ADJUST_DYN_INFO (VERSYMIDX (DT_VERSYM)); - ADJUST_DYN_INFO (DT_ADDRTAGIDX (DT_GNU_HASH) + DT_NUM + DT_THISPROCNUM - + DT_VERSIONTAGNUM + DT_EXTRANUM + DT_VALNUM); + ADJUST_DYN_INFO (ADDRIDX (DT_GNU_HASH)); # undef ADJUST_DYN_INFO assert (cnt <= DL_RO_DYN_TEMP_CNT); }