From patchwork Tue Dec 11 12:19:35 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ard Biesheuvel X-Patchwork-Id: 153456 Delivered-To: patch@linaro.org Received: by 2002:a2e:299d:0:0:0:0:0 with SMTP id p29-v6csp547541ljp; Tue, 11 Dec 2018 04:19:49 -0800 (PST) X-Google-Smtp-Source: AFSGD/X2ijTGUX7nJisuCi4wT0X1Nu8AuG/nz0qEP5180jvJNytD/b2/aAI2MMA+90SmCIG+K/Ub X-Received: by 2002:a17:902:b03:: with SMTP id 3mr15784306plq.91.1544530789380; Tue, 11 Dec 2018 04:19:49 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1544530789; cv=none; d=google.com; s=arc-20160816; b=LCRV6DesD55m67pipkVNUUIadqf3JtqcPIwOX/Wqx7qzRQijLRrbzXz1q2SLXHnIfV o/76k3AKecb3ChDFDWOQiYTb5TsGXLZ4O6ngioYYiGJByWonJ5PKQ7W6s7iWCgipTjuZ nwowR7qqBHMkB5XV+3NbpjQ6E3xTy6lZrQ+HqxhOXF7OVPnjP9z371/kYyFyQa3jUa3t J1l1Ud+ksmoEGiIwRuJrcQaNagpvLor7vFUxdJRGv7pafZ4pMunIYDgCmzEZe0KtckRt XVhs579i+i1HvlsBhXPSdRHEItS4qeSF82pkmBox0SvEOKw+PY0u23BnUObvJUsXJS5v UeQA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:content-transfer-encoding:cc:list-subscribe :list-help:list-post:list-archive:list-unsubscribe:list-id :precedence:subject:mime-version:references:in-reply-to:message-id :date:to:from:dkim-signature:delivered-to; bh=SXX+b1J5PuncgesLCVLGwCFPqR5AWkds6qMHYj2lxNg=; b=nVo0Ad6QkqhwOT1Ga3S8aWzdnLCHAal2/ZLsxtZOPsvetCypH5Q89xraqMslJCnkMF +AlhTf6jATWoYMxCq1awpqrqG+S744qJsTglmsW0BLOikzM6xuwbsZZcLj3x53itpOsh 4zlYwKcXQTBlnBSeGRmDwdGzHXoAkEb4rlyrj+KokT9fta12lyo1O2MMwxlOk/J4PiRe ILpRu6xBFRL9Y9axUJ6JYjCKKUfl9gacPTuQIt0Q0twpJ/16C25AZ3ZlWLdDDHwo86M9 ec5casC5WXPAb2v5fcxmBM499DUSDHB1Lm6DPdRshD9uvRQvib6m1tpZRVBazR32AvIH WFXg== ARC-Authentication-Results: i=1; mx.google.com; dkim=neutral (body hash did not verify) header.i=@linaro.org header.s=google header.b=LVOzrzWD; spf=pass (google.com: best guess record for domain of edk2-devel-bounces@lists.01.org designates 198.145.21.10 as permitted sender) smtp.mailfrom=edk2-devel-bounces@lists.01.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from ml01.01.org (ml01.01.org. [198.145.21.10]) by mx.google.com with ESMTPS id r29si11111620pga.477.2018.12.11.04.19.48 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 11 Dec 2018 04:19:49 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of edk2-devel-bounces@lists.01.org designates 198.145.21.10 as permitted sender) client-ip=198.145.21.10; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@linaro.org header.s=google header.b=LVOzrzWD; spf=pass (google.com: best guess record for domain of edk2-devel-bounces@lists.01.org designates 198.145.21.10 as permitted sender) smtp.mailfrom=edk2-devel-bounces@lists.01.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from [127.0.0.1] (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 4B4B72194D3AE; Tue, 11 Dec 2018 04:19:47 -0800 (PST) X-Original-To: edk2-devel@lists.01.org Delivered-To: edk2-devel@lists.01.org Received-SPF: Pass (sender SPF authorized) identity=mailfrom; client-ip=2a00:1450:4864:20::341; helo=mail-wm1-x341.google.com; envelope-from=ard.biesheuvel@linaro.org; receiver=edk2-devel@lists.01.org Received: from mail-wm1-x341.google.com (mail-wm1-x341.google.com [IPv6:2a00:1450:4864:20::341]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id CBF67211982E0 for ; Tue, 11 Dec 2018 04:19:45 -0800 (PST) Received: by mail-wm1-x341.google.com with SMTP id m1so1352989wml.2 for ; Tue, 11 Dec 2018 04:19:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=BxYBiGAesSEjkpvLDP4RtohzjjH8MEt2iif+HLSFtBQ=; b=LVOzrzWDrHVtUOzCnWOZSwHgVV55q6a6DQ5EwLI11M2bOmvPwLy0qusad0+UBXhprh jXatb8zU7rWmOcOyybWuRplyx8IjqWarujupZ5Fv9ToQBCBS3zpOBzbCASvMXR/URkGj LnzwuXRC9LnTwr18L+dwOTJECjR/s15HsIRUQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=BxYBiGAesSEjkpvLDP4RtohzjjH8MEt2iif+HLSFtBQ=; b=twB453CnP+sGFohn5b+CwktdAeNQSrstDRXfmqkjI7k31xyV1MqivMpQyrJKziRKiF Qbh7Mim+BL/Q7KLo8eWanqFAFvbBL19yUcCx9rHagNlMeoE6DW0x4E9YlloRVx2IEJOu mOsJP23jcGzlREOA7/3y4Zr03NZy7vGt3FbmS9BIFWuaOmhbFcPuWxSaMWE0or8PeKrf HzidN1zsVPb1wKNO+yip7+GAeboinRsuYI8jI3aVy6zztR70thd8K/VjUS+MOZHC4HoY 6fu09QIpya4b3dwV2GREyqDgp/ntLuT3DOFVuXdVKpcbb371SyNGqB3KJ5KPrpH/27JQ tTsA== X-Gm-Message-State: AA+aEWa0JKwetqiivdAzgHQNjDqM7rccJzA+QrUCB5zA3nIXpGD1i2oH 9NjJWEOQB90dX1HRacQFiOEgYE71qitt4Q== X-Received: by 2002:a1c:e287:: with SMTP id z129mr2044832wmg.71.1544530783937; Tue, 11 Dec 2018 04:19:43 -0800 (PST) Received: from harold.home ([2a01:cb1d:112:6f00:8c3:6b9d:cbc9:58c6]) by smtp.gmail.com with ESMTPSA id n9sm14183017wrx.80.2018.12.11.04.19.42 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 11 Dec 2018 04:19:43 -0800 (PST) From: Ard Biesheuvel To: edk2-devel@lists.01.org Date: Tue, 11 Dec 2018 13:19:35 +0100 Message-Id: <20181211121936.3599-2-ard.biesheuvel@linaro.org> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20181211121936.3599-1-ard.biesheuvel@linaro.org> References: <20181211121936.3599-1-ard.biesheuvel@linaro.org> MIME-Version: 1.0 Subject: [edk2] [PATCH 1/2] ArmVirtPkg/ArmVirtQemuKernel ARM: make some PCD settings apply to ARM X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lersek@redhat.com Errors-To: edk2-devel-bounces@lists.01.org Sender: "edk2-devel" Move some PCD settings outs of the [PcdsFixedAtBuild.AARCH64] block, so that they apply to 32-bit ARM as well. Without this change, the ARM build doesn't work. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ard Biesheuvel --- ArmVirtPkg/ArmVirtQemuKernel.dsc | 20 +++++++++----------- 1 file changed, 9 insertions(+), 11 deletions(-) -- 2.19.2 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel Reviewed-by: Laszlo Ersek diff --git a/ArmVirtPkg/ArmVirtQemuKernel.dsc b/ArmVirtPkg/ArmVirtQemuKernel.dsc index d8fbf14e8f4e..9928919bf5b0 100644 --- a/ArmVirtPkg/ArmVirtQemuKernel.dsc +++ b/ArmVirtPkg/ArmVirtQemuKernel.dsc @@ -130,6 +130,15 @@ [PcdsFixedAtBuild.common] gEfiNetworkPkgTokenSpaceGuid.PcdAllowHttpConnections|TRUE !endif + gEfiMdeModulePkgTokenSpaceGuid.PcdResetOnMemoryTypeInformationChange|FALSE + gEfiMdeModulePkgTokenSpaceGuid.PcdBootManagerMenuFile|{ 0x21, 0xaa, 0x2c, 0x46, 0x14, 0x76, 0x03, 0x45, 0x83, 0x6e, 0x8a, 0xb6, 0xf4, 0x66, 0x23, 0x31 } + + # + # The maximum physical I/O addressability of the processor, set with + # BuildCpuHob(). + # + gEmbeddedTokenSpaceGuid.PcdPrePiCpuIoSize|16 + [PcdsPatchableInModule.common] # # This will be overridden in the code @@ -146,17 +155,6 @@ [PcdsPatchableInModule.common] gArmTokenSpaceGuid.PcdFdBaseAddress|0x0 gArmTokenSpaceGuid.PcdFvBaseAddress|0x0 -[PcdsFixedAtBuild.AARCH64] - - gEfiMdeModulePkgTokenSpaceGuid.PcdResetOnMemoryTypeInformationChange|FALSE - gEfiMdeModulePkgTokenSpaceGuid.PcdBootManagerMenuFile|{ 0x21, 0xaa, 0x2c, 0x46, 0x14, 0x76, 0x03, 0x45, 0x83, 0x6e, 0x8a, 0xb6, 0xf4, 0x66, 0x23, 0x31 } - - # - # The maximum physical I/O addressability of the processor, set with - # BuildCpuHob(). - # - gEmbeddedTokenSpaceGuid.PcdPrePiCpuIoSize|16 - [PcdsDynamicDefault.common] gEfiMdePkgTokenSpaceGuid.PcdPlatformBootTimeOut|3 From patchwork Tue Dec 11 12:19:36 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ard Biesheuvel X-Patchwork-Id: 153457 Delivered-To: patch@linaro.org Received: by 2002:a2e:299d:0:0:0:0:0 with SMTP id p29-v6csp547604ljp; Tue, 11 Dec 2018 04:19:52 -0800 (PST) X-Google-Smtp-Source: AFSGD/WTYv8aiDXvPd0IGyRvK0Yw5hcF2+knK0V7BdmMZJcyflNrW29IYLWyWOuTKVgzM3r+7MDe X-Received: by 2002:a63:9402:: with SMTP id m2mr13900414pge.93.1544530792696; Tue, 11 Dec 2018 04:19:52 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1544530792; cv=none; d=google.com; s=arc-20160816; b=e5y+CD46htUSGqujNIYxafRZdpSNY7TBsXPi9Kpet7QZVxzW6OMbO4L2+MGoEfluvn cWWgEfYvJHT70m/VdQ+Q4m7NpFYmWCtdMMYLvPp/E70fh1otW4yXgUC/w0lrwUpyXNc5 /175JVvyH8nmSs8cGGJHUp5aeT76ab5medWKmHPafmDceloRezM/DxIoOSc7D+wX7vlT byrmGL5mR8qEkK+nAw5IHniPMHkExpCDgKe2b7bJeAJfgrI9ZhfAqdyY3xRoSgu86ChF XFbTItlTjO4HPkW5lle5d6sA31ZbFtnJaDpMYnLCp3OfWbLnMHSugf6vL/h7DpQMgpBe AHQA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:content-transfer-encoding:cc:list-subscribe :list-help:list-post:list-archive:list-unsubscribe:list-id :precedence:subject:mime-version:references:in-reply-to:message-id :date:to:from:dkim-signature:delivered-to; bh=LygahmPjGVP6UQU1A5mk2SLG0YJC2f9nD9WzGm6of0A=; b=LUqmdLZWy7dLBICraRbZmHELJE2xxYx2u5eSZaOPBipMaRnidxYjsqHf+daT5rrIBq aiWoTek1lvq4SWd1MJpVAmsgb4HwuN5E7g16wE8zKtP9JQKtHt4p653JvGCHoiHNnjQT 9mxu4OnVoWHxh97hYNeiUZSWyiUIl7fCweXj5svK69LIflR/isrTqkawr0X68gBZU1zC a3wjgIOmR3nOnEk9WarUlPOn/YJQbNdlZqjq/LeS7a7YXtkW39VLEsWuQr/dYT+YOEx3 Xp4NPxOwHA6GKNa+1cqaLSiysjplsx7En2NLuD4NUVFNFaFl6tjWO/m7vn/IHN+re65Q M/wQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=neutral (body hash did not verify) header.i=@linaro.org header.s=google header.b=P3cqQTh0; spf=pass (google.com: best guess record for domain of edk2-devel-bounces@lists.01.org designates 198.145.21.10 as permitted sender) smtp.mailfrom=edk2-devel-bounces@lists.01.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from ml01.01.org (ml01.01.org. [198.145.21.10]) by mx.google.com with ESMTPS id j91si12818830pld.395.2018.12.11.04.19.52 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 11 Dec 2018 04:19:52 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of edk2-devel-bounces@lists.01.org designates 198.145.21.10 as permitted sender) client-ip=198.145.21.10; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@linaro.org header.s=google header.b=P3cqQTh0; spf=pass (google.com: best guess record for domain of edk2-devel-bounces@lists.01.org designates 198.145.21.10 as permitted sender) smtp.mailfrom=edk2-devel-bounces@lists.01.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from [127.0.0.1] (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 7C7092119175F; Tue, 11 Dec 2018 04:19:48 -0800 (PST) X-Original-To: edk2-devel@lists.01.org Delivered-To: edk2-devel@lists.01.org Received-SPF: Pass (sender SPF authorized) identity=mailfrom; client-ip=2a00:1450:4864:20::441; helo=mail-wr1-x441.google.com; envelope-from=ard.biesheuvel@linaro.org; receiver=edk2-devel@lists.01.org Received: from mail-wr1-x441.google.com (mail-wr1-x441.google.com [IPv6:2a00:1450:4864:20::441]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id A09AE21198CB3 for ; Tue, 11 Dec 2018 04:19:47 -0800 (PST) Received: by mail-wr1-x441.google.com with SMTP id p4so13846996wrt.7 for ; Tue, 11 Dec 2018 04:19:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=BlVIB8IQ8RtEYCzz0gg/fNM76dC0zWlxst2hWaf7L+I=; b=P3cqQTh04PGw+WUSOTXOaJxe33x834ROPLPuDMrTHldZOdSFHRkf6vRL571bF0jqR4 RucvlmS5DcZJNJx8BRdV3eLW9/P9fwl5Fd4NATWnJB5P9qAnMU9WTOzO+77dX1qRAc7q CGGd95paaQhLeRbO/cfOhMD+loFLxP8FuUmE0= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=BlVIB8IQ8RtEYCzz0gg/fNM76dC0zWlxst2hWaf7L+I=; b=juW0XzMAgWSWmtkn0MIAyttNaAlNW5KgoOB0iDGLZZqsB36xr2qQ797aMKNCNBP0zR iGveBwVedzm/X0xmqOfD6kQ7Navdg+csHm+3JBh34qMmo8JKg8bil/3DXviW5BZk4bUP mQk8WhrMpLPleybeJGkPJJ3PRH+XNWoyMHn9F5VCOuqDKfKN6HF2jCzIUuNsulr5hpsd g89188HkJVYjltpBM4fSFf/OHEzuF65eziTZkmskanoMFhe0il5ZGfslI089Cj0/eYRi k3voPusaXRKKEicFs2DYJIkBUIQZsV2GiKCcMg5UMe07NH/6nTwzyabLoRFGkC4LD/b+ o7VA== X-Gm-Message-State: AA+aEWZytaYQ2CX5e6FJFLiMHgeEaqflCl3R+5pV7IgzlRP6aneNKOmo hG/jCvRrsZc9wZdQ5BCP/Kw/oJJWrZfQmA== X-Received: by 2002:adf:e5c4:: with SMTP id a4mr12466051wrn.157.1544530785470; Tue, 11 Dec 2018 04:19:45 -0800 (PST) Received: from harold.home ([2a01:cb1d:112:6f00:8c3:6b9d:cbc9:58c6]) by smtp.gmail.com with ESMTPSA id n9sm14183017wrx.80.2018.12.11.04.19.43 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 11 Dec 2018 04:19:44 -0800 (PST) From: Ard Biesheuvel To: edk2-devel@lists.01.org Date: Tue, 11 Dec 2018 13:19:36 +0100 Message-Id: <20181211121936.3599-3-ard.biesheuvel@linaro.org> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20181211121936.3599-1-ard.biesheuvel@linaro.org> References: <20181211121936.3599-1-ard.biesheuvel@linaro.org> MIME-Version: 1.0 Subject: [edk2] [PATCH 2/2] ArmVirtPkg/PrePiUniCoreRelocatable CLANG38: work around build issues X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lersek@redhat.com Errors-To: edk2-devel-bounces@lists.01.org Sender: "edk2-devel" The self-relocating PrePi module that is used by the ArmVirtQemuKernel and ArmVirtXen targets runs the linker in PIE mode so that it emits dynamic relocations into the final image in a way that permits the module to relocate itself into place before calling into the C code. When building these targets using the CLANG38 toolchain, we switch from the BFD to the GOLD linker, which behaves a bit differently when building PIE executables, and insists on emitting GOT indirected symbol references throughout, which means a) that we end up with absolute addresses (which need to be fixed up at load time) for no good reason, and b) we have to add support for handling GOT entries to GenFw if we want to convert them into PE/COFF. So instead, let's emit a shared library. Since the ELF image only serves as the input to GenFw, this does not lead to any loss of functionality, although it does require the -Bsymbolic linker option to be added to ensure that no symbol based dynamic relocations are emitted (which would, e.g., permit lazy binding for shared libraries). So for all other toolchains, the linker option changes are a no-op. Then, we have to convince CLANG38/GOLD that there is no need to refer to symbols via a GOT entry. This is done by forcing hidden visibility for all symbols in all components that make up the PrePi SEC module: this informs the linker that a symbol is never exported or preempted, making it safe to refer to it directly from anywhere in the code, rather than indirectly via a GOT entry. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ard Biesheuvel --- ArmVirtPkg/ArmVirtQemuKernel.dsc | 12 ++++++++-- ArmVirtPkg/ArmVirtXen.dsc | 12 ++++++++-- ArmVirtPkg/PrePi/ArmVirtPrePiUniCoreRelocatable.inf | 2 +- ArmVirtPkg/Include/Platform/Hidden.h | 23 ++++++++++++++++++++ 4 files changed, 44 insertions(+), 5 deletions(-) -- 2.19.2 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel Acked-by: Laszlo Ersek diff --git a/ArmVirtPkg/ArmVirtQemuKernel.dsc b/ArmVirtPkg/ArmVirtQemuKernel.dsc index 9928919bf5b0..c4324a9e264b 100644 --- a/ArmVirtPkg/ArmVirtQemuKernel.dsc +++ b/ArmVirtPkg/ArmVirtQemuKernel.dsc @@ -68,11 +68,19 @@ [LibraryClasses.common] [LibraryClasses.common.UEFI_DRIVER] UefiScsiLib|MdePkg/Library/UefiScsiLib/UefiScsiLib.inf -[BuildOptions.ARM.EDKII.SEC, BuildOptions.ARM.EDKII.BASE] +[BuildOptions.common.EDKII.SEC, BuildOptions.common.EDKII.BASE] # Avoid MOVT/MOVW instruction pairs in code that may end up in the PIE # executable we build for the relocatable PrePi. They are not runtime # relocatable in ELF. - *_CLANG35_*_CC_FLAGS = -mno-movt + *_CLANG35_ARM_CC_FLAGS = -mno-movt + + # + # CLANG38 with LTO support enabled uses the GNU GOLD linker, which insists + # on emitting GOT based symbol references when running in shared mode, unless + # we override visibility to 'hidden' in all modules that make up the PrePi + # build. + # + GCC:*_CLANG38_*_CC_FLAGS = -include $(WORKSPACE)/ArmVirtPkg/Include/Platform/Hidden.h ################################################################################ # diff --git a/ArmVirtPkg/ArmVirtXen.dsc b/ArmVirtPkg/ArmVirtXen.dsc index 20fae9e675bb..e083666f54ea 100644 --- a/ArmVirtPkg/ArmVirtXen.dsc +++ b/ArmVirtPkg/ArmVirtXen.dsc @@ -57,11 +57,19 @@ [LibraryClasses] [LibraryClasses.common.UEFI_DRIVER] UefiScsiLib|MdePkg/Library/UefiScsiLib/UefiScsiLib.inf -[BuildOptions.ARM.EDKII.SEC, BuildOptions.ARM.EDKII.BASE] +[BuildOptions.common.EDKII.SEC, BuildOptions.common.EDKII.BASE] # Avoid MOVT/MOVW instruction pairs in code that may end up in the PIE # executable we build for the relocatable PrePi. They are not runtime # relocatable in ELF. - *_CLANG35_*_CC_FLAGS = -mno-movt + *_CLANG35_ARM_CC_FLAGS = -mno-movt + + # + # CLANG38 with LTO support enabled uses the GNU GOLD linker, which insists + # on emitting GOT based symbol references when running in shared mode, unless + # we override visibility to 'hidden' in all modules that make up the PrePi + # build. + # + GCC:*_CLANG38_*_CC_FLAGS = -include $(WORKSPACE)/ArmVirtPkg/Include/Platform/Hidden.h ################################################################################ # diff --git a/ArmVirtPkg/PrePi/ArmVirtPrePiUniCoreRelocatable.inf b/ArmVirtPkg/PrePi/ArmVirtPrePiUniCoreRelocatable.inf index 034ddb41cb48..5fe6cd8eb481 100755 --- a/ArmVirtPkg/PrePi/ArmVirtPrePiUniCoreRelocatable.inf +++ b/ArmVirtPkg/PrePi/ArmVirtPrePiUniCoreRelocatable.inf @@ -105,4 +105,4 @@ [Pcd] gArmTokenSpaceGuid.PcdFvBaseAddress [BuildOptions] - GCC:*_*_*_DLINK_FLAGS = -pie -Wl,-T,$(MODULE_DIR)/Scripts/PrePi-PIE.lds + GCC:*_*_*_DLINK_FLAGS = -shared -Wl,-Bsymbolic -Wl,-T,$(MODULE_DIR)/Scripts/PrePi-PIE.lds diff --git a/ArmVirtPkg/Include/Platform/Hidden.h b/ArmVirtPkg/Include/Platform/Hidden.h new file mode 100644 index 000000000000..20e9f5d896b2 --- /dev/null +++ b/ArmVirtPkg/Include/Platform/Hidden.h @@ -0,0 +1,23 @@ +/** @file + + Copyright (c) 2018, Linaro Limited. All rights reserved. + + This program and the accompanying materials + are licensed and made available under the terms and conditions of the BSD License + which accompanies this distribution. The full text of the license may be found at + http://opensource.org/licenses/bsd-license.php + + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + +**/ + +// +// Setting the GCC -fvisibility=hidden command line option is not quite the same +// as setting the pragma below: the former only affects definitions, whereas the +// latter affects extern declarations as well. So if we want to ensure that no +// GOT indirected symbol references are emitted, we need to use the pragma, or +// GOT based cross object references could be emitted, e.g., in libraries, and +// these cannot be relaxed to ordinary symbol references at link time. +// +#pragma GCC visibility push (hidden)