From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS31976 209.132.180.0/23 X-Spam-Status: No, score=-4.1 required=3.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL,SPF_HELO_PASS,SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 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 dcvr.yhbt.net (Postfix) with ESMTPS id AF6371F463 for ; Thu, 2 Jan 2020 12:08:00 +0000 (UTC) DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:subject:to:references:from:message-id:date :mime-version:in-reply-to:content-type :content-transfer-encoding; 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auth=none X-HELO: anteater.elm.relay.mailchannels.net X-Sender-Id: dreamhost|x-authsender|siddhesh@gotplt.org X-Sender-Id: dreamhost|x-authsender|siddhesh@gotplt.org X-MC-Relay: Neutral X-MailChannels-SenderId: dreamhost|x-authsender|siddhesh@gotplt.org X-MailChannels-Auth-Id: dreamhost X-Occur-Blushing: 3e37807725f0f512_1577966870551_2453583720 X-MC-Loop-Signature: 1577966870551:2869015203 X-MC-Ingress-Time: 1577966870551 DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=gotplt.org; h=subject:to :references:from:message-id:date:mime-version:in-reply-to :content-type:content-transfer-encoding; s=gotplt.org; bh=pE2534 W8Wy5ZDql+1r92b7s0/iA=; b=gE8s6T6p/L6tc2JySXq4l8lX4Y2k3YUxrMmVNe dcNFOh5gmb/kuNQCYYeKdDSdCo0bQ413aLH60w79cY6mp02hOvNV2/suhAAFGMAX xNo/UBgQ/w0uVeWi0Gp69Ez8aYs1tGJSumhbb8HfE5gMOgA3VI2I4O9l4OK9I5pr tqH64= Subject: Re: [PATCH 03/16] Remove vDSO support from make-syscall.sh To: Adhemerval Zanella , libc-alpha@sourceware.org References: <20191217214728.2886-1-adhemerval.zanella@linaro.org> <20191217214728.2886-3-adhemerval.zanella@linaro.org> X-DH-BACKEND: pdx1-sub0-mail-a59 From: Siddhesh Poyarekar Message-ID: <29ab02c8-db64-de1d-5380-0fa5587c64c0@gotplt.org> Date: Thu, 2 Jan 2020 17:37:25 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.3.1 MIME-Version: 1.0 In-Reply-To: <20191217214728.2886-3-adhemerval.zanella@linaro.org> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-VR-OUT-STATUS: OK X-VR-OUT-SCORE: -100 X-VR-OUT-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedufedrvdeguddgfeejucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuggftfghnshhusghstghrihgsvgdpffftgfetoffjqffuvfenuceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhepuffvfhfhkffffgggjggtgfesthejredttdefjeenucfhrhhomhepufhiugguhhgvshhhucfrohihrghrvghkrghruceoshhiugguhhgvshhhsehgohhtphhlthdrohhrgheqnecukfhppeduvdefrddvhedvrddvtddvrddujedvnecurfgrrhgrmhepmhhouggvpehsmhhtphdphhgvlhhopegludelvddrudeikedruddrleejngdpihhnvghtpeduvdefrddvhedvrddvtddvrddujedvpdhrvghtuhhrnhdqphgrthhhpefuihguughhvghshhcurfhohigrrhgvkhgrrhcuoehsihguughhvghshhesghhothhplhhtrdhorhhgqedpmhgrihhlfhhrohhmpehsihguughhvghshhesghhothhplhhtrdhorhhgpdhnrhgtphhtthhopegrughhvghmvghrvhgrlhdriigrnhgvlhhlrgeslhhinhgrrhhordhorhhgnecuvehluhhsthgvrhfuihiivgepud On 18/12/19 3:17 am, Adhemerval Zanella wrote: > The auto-generated vDSO call shows some issues: > > - It requires sync the auto-generated C file with current glibc > implementation; > - It still uses symbol redirections hacks where libc-symbols.h > provide macros that uses compiler builtins > (libc_ifunc_redirected for instance); > - It does not handle all required compiler handling > (inhibit_stack_protector on iFUNC resolver). > - No architecure uses it. > > Checked with a build against all major ABIs. > --- > sysdeps/unix/make-syscalls.sh | 45 +---------------------------------- > 1 file changed, 1 insertion(+), 44 deletions(-) > OK. Reviewed-by: Siddhesh Poyarekar