From patchwork Fri Nov 16 15:47:28 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe Lyon X-Patchwork-Id: 151348 Delivered-To: patch@linaro.org Received: by 2002:a2e:299d:0:0:0:0:0 with SMTP id p29-v6csp585652ljp; Fri, 16 Nov 2018 07:48:38 -0800 (PST) X-Google-Smtp-Source: AJdET5fr5rsnnaH8nvmVBFW3wxziMS8sp+HRAQhTrjmzoLkdIDXI0Tiz0Go/VWxT1NUeT3uqHwiM X-Received: by 2002:a63:f515:: with SMTP id w21mr10352479pgh.220.1542383318697; Fri, 16 Nov 2018 07:48:38 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1542383318; cv=none; d=google.com; s=arc-20160816; b=jKAK6xNWwV4gSKd7tPyBgmj5szOQn5AjzwchcOg6EtW/JT27XcZtohIfA24yLFIam+ 0EA0YWjmDhsfR43zNjnOmgOqp0yFtaBwTVb3b9JrlWF3f2SM1C2wfP9tkVBGuodLLZ0Q jstDBqtpJARoLsoZ96i1lJSYEGAkdbNn/YBhJ2lJT3qggJ62VS3nbFzw4Iu9w87J2sZG 9a5HICPBG0TmeUjmhFId1zCaGE1Yi3CdHrJxDCzI8HfQ9flrDkejiRNAV5moVVCZqd3R uIl0oWjCBtRDfkT+Ab2+I8LfdOqoW99rb1CpnCeYbt1aTEKxlUS8UEcbEdki2pYAiPYs t0GQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:delivered-to:sender:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:mailing-list:dkim-signature :domainkey-signature; bh=omDv8qf4bbZxgG4eQqfUBlhkTnYhzN0pF5fxSpqP3k4=; b=lKsqklb6SooJYhhScBujvXJWfpzPxzjT8Jpk/NxeEsRcBJNfZCZmd80j7A5iNDon/G BAtK3yIQPOTWQzZWQD99alQnp7pkiw4jWFZNrGKhp7MHzgQLTXlqTxgjIF/Sljpy/sme ugk6KV61GHwpni+S/7phV9cxWwVDKGWsBHnN0/5nS0YR3wdpYzWykdutgK2q1nqjEv5p ibQ4AM2E+HhQ9qk/3lfvzdnjqpmpaAY5mHyBqs1FtV/ymKgxk9CIod95JAeZFHMcafuz fIoI9aqdxW1rZ2ooH1ZA4PEsH++FKRVf6eUtnBMIoSng96QQtWvfg/FsByfkiK0hPzz4 dweg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gcc.gnu.org header.s=default header.b=CubG80DW; spf=pass (google.com: domain of gcc-patches-return-490262-patch=linaro.org@gcc.gnu.org designates 209.132.180.131 as permitted sender) smtp.mailfrom="gcc-patches-return-490262-patch=linaro.org@gcc.gnu.org" Return-Path: Received: from sourceware.org (server1.sourceware.org. [209.132.180.131]) by mx.google.com with ESMTPS id x2-v6si30812597plv.413.2018.11.16.07.48.38 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 16 Nov 2018 07:48:38 -0800 (PST) Received-SPF: pass (google.com: domain of gcc-patches-return-490262-patch=linaro.org@gcc.gnu.org designates 209.132.180.131 as permitted sender) client-ip=209.132.180.131; Authentication-Results: mx.google.com; dkim=pass header.i=@gcc.gnu.org header.s=default header.b=CubG80DW; spf=pass (google.com: domain of gcc-patches-return-490262-patch=linaro.org@gcc.gnu.org designates 209.132.180.131 as permitted sender) smtp.mailfrom="gcc-patches-return-490262-patch=linaro.org@gcc.gnu.org" DomainKey-Signature: a=rsa-sha1; c=nofws; d=gcc.gnu.org; h=list-id :list-unsubscribe:list-archive:list-post:list-help:sender:from :to:cc:subject:date:message-id:mime-version:content-type :content-transfer-encoding; q=dns; s=default; b=dV3AXb1kAGZ+aZ1p BLcKjMLqpZ5o/D8GhsUrkdZ4h+vYv0LRyZ7pXRyt1iPreh+PlIJUD1oQEX6/+C0y eKTrRCbVFOAuyR8MIgntuqijAJCMCtpQBQrmLSRsnZ6bLudCxqpouXZT6+fTlW0W GvKpfsYoY2LwO/GX8gUyhA3rX2k= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=gcc.gnu.org; h=list-id :list-unsubscribe:list-archive:list-post:list-help:sender:from :to:cc:subject:date:message-id:mime-version:content-type :content-transfer-encoding; s=default; bh=lcUzQ7aQjw/AqZkpWZA4YM zr5HM=; b=CubG80DWB4adZZqsvGXuhKho5qrs4KN2p7+naoYFV9+Z8cogV1I5hD CyQlqWgitBqat05cgPCFjwQzqMC5rCTvfsxQ5X8tgElpPGWEWzhfdVy5Mn3oY3Ac F51j1krCZkgbBlLrkuWqoIxeJlarcgi5mX3PgfnEmW3F1H0f16pms= Received: (qmail 40312 invoked by alias); 16 Nov 2018 15:48:25 -0000 Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Delivered-To: mailing list gcc-patches@gcc.gnu.org Received: (qmail 31691 invoked by uid 89); 16 Nov 2018 15:48:19 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-9.1 required=5.0 tests=BAYES_00, GIT_PATCH_2, GIT_PATCH_3, KAM_SHORT, RCVD_IN_DNSWL_LOW, SEM_URI, SEM_URIRED, SPF_PASS autolearn=ham version=3.3.2 spammy=config.host, UD:host, UD:config.host, confighost X-HELO: mx07-00178001.pphosted.com Received: from mx07-00178001.pphosted.com (HELO mx07-00178001.pphosted.com) (62.209.51.94) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Fri, 16 Nov 2018 15:48:16 +0000 Received: from pps.filterd (m0046668.ppops.net [127.0.0.1]) by mx07-.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id wAGFilWU002140; Fri, 16 Nov 2018 16:48:13 +0100 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 2nsx068vtg-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Fri, 16 Nov 2018 16:48:13 +0100 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 53F7931; Fri, 16 Nov 2018 15:48:13 +0000 (GMT) Received: from Webmail-eu.st.com (sfhdag5node1.st.com [10.75.127.13]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 01AF94FF9; Fri, 16 Nov 2018 15:48:12 +0000 (GMT) Received: from gnb.st.com (10.75.127.45) by SFHDAG5NODE1.st.com (10.75.127.13) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Fri, 16 Nov 2018 16:48:12 +0100 From: Christophe Lyon To: CC: Subject: [ARM/FDPIC v4 00/20] FDPIC ABI for ARM Date: Fri, 16 Nov 2018 16:47:28 +0100 Message-ID: <20181116154808.25154-1-christophe.lyon@st.com> MIME-Version: 1.0 X-IsSubscribed: yes From: Christophe Lyon Hello, This patch series implements the GCC contribution of the FDPIC ABI for ARM targets. This ABI enables to run Linux on ARM MMU-less cores and supports shared libraries to reduce the memory footprint. Without MMU, text and data segments relative distances are different from one process to another, hence the need for a dedicated FDPIC register holding the start address of the data segment. One of the side effects is that function pointers require two words to be represented: the address of the code, and the data segment start address. These two words are designated as "Function Descriptor", hence the "FD PIC" name. On ARM, the FDPIC register is r9 [1], and the target name is arm-uclinuxfdpiceabi. Note that arm-uclinux exists, but uses another ABI and the BFLAT file format; it does not support code sharing. The -mfdpic option is enabled by default, and -mno-fdpic should be used to build the Linux kernel. This work was developed some time ago by STMicroelectronics, and was presented during Linaro Connect SFO15 (September 2015). You can watch the discussion and read the slides [2]. This presentation was related to the toolchain published on github [3], which is based on binutils-2.22, gcc-4.7, uclibc-0.9.33.2, gdb-7.5.1 and qemu-2.3.0, and for which pre-built binaries are available [3]. The ABI itself is described in details in [1]. Our Linux kernel patches have been updated and committed by Nicolas Pitre (Linaro) in July 2017. They are required so that the loader is able to handle this new file type. Indeed, the ELF files are tagged with ELFOSABI_ARM_FDPIC. This new tag has been allocated by ARM, as well as the new relocations involved. The binutils, QEMU and uclibc-ng patch series have been merged recently. [4][5][6] This series provides support for architectures that support ARM and/or Thumb-2 and has been tested on arm-linux-gnueabi without regression, as well as arm-uclinuxfdpiceabi, using QEMU. arm-uclinuxfdpiceabi has more failures than arm-linux-gnueabi, but is quite functional. Are the GCC patches OK for inclusion in master? Changes between v3 and v4: - improved documentation (patch 1) - emit an error message (sorry) if the target architecture does not support arm nor thumb-2 modes (patch 4) - handle Richard's comments on patch 4 (comments, unspec) - added .align directive (patch 5) - fixed use of kernel helpers (__kernel_cmpxchg, __kernel_dmb) (patch 6) - code factorization in patch 7 - typos/internal function name in patch 8 - improved patch 12 - dropped patch 16 - patch 20 introduces arm_arch*_thumb_ok effective targets to help skip some tests - I tested patch 2 on xtensa-buildroot-uclinux-uclibc, it adds many new tests, but a few regressions (https://gcc.gnu.org/ml/gcc-patches/2018-11/msg00713.html) - I compiled and executed several LTP tests to exercise pthreads and signals - I wrote and executed a simple testcase to change the interaction with __kernel_cmpxchg (ie. call the kernel helper rather than use an implementation in libgcc as requested by Richard) Changes between v2 and v3: - added doc entry for -mfdpic new option - took Kyrill's comments into account (use "Armv7" instead of "7", code factorization, use preprocessor instead of hard-coding "r9", remove leftover code for thumb1 support, fixed comments) - rebase over recent trunk - patches with changes: 1, 2 (commit message), 3 (rebase), 4, 6, 7, 9, 14 (rebase), 19 (rebase) Changes between v1 and v2: - fix GNU coding style - exit with an error for pre-Armv7 - use ACLE __ARM_ARCH and remove dead code for pre-Armv4 - remove unsupported attempts of pre-Armv7/thumb1 support - add instructions in comments next to opcodes - merge patches 11 and 13 - fixed protected visibility handling in patch 8 - merged legitimize_tls_address_fdpic and legitimize_tls_address_not_fdpic as requested Thanks, Christophe. [1] https://github.com/mickael-guene/fdpic_doc/blob/master/abi.txt [2] http://connect.linaro.org/resource/sfo15/sfo15-406-arm-fdpic-toolset-kernel-libraries-for-cortex-m-cortex-r-mmuless-cores/ [3] https://github.com/mickael-guene/fdpic_manifest [4] https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=f1ac0afe481e83c9a33f247b81fa7de789edc4d9 [5] https://git.qemu.org/?p=qemu.git;a=commit;h=e8fa72957419c11984608062c7dcb204a6003a06 [6] https://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/commit/?id=13c46fbc1e5a021f2b9ed32d83aecc93ae5e655d Christophe Lyon (20): [ARM] FDPIC: Add -mfdpic option support [ARM] FDPIC: Handle arm*-*-uclinuxfdpiceabi in configure scripts [ARM] FDPIC: Force FDPIC related options unless -mno-fdpic is provided [ARM] FDPIC: Add support for FDPIC for arm architecture [ARM] FDPIC: Fix __do_global_dtors_aux and frame_dummy generation [ARM] FDPIC: Add support for c++ exceptions [ARM] FDPIC: Avoid saving/restoring r9 on stack since it is read-only [ARM] FDPIC: Enforce local/global binding for function descriptors [ARM] FDPIC: Add support for taking address of nested function [ARM] FDPIC: Implement TLS support. [ARM] FDPIC: Add support to unwind FDPIC signal frame [ARM] FDPIC: Restore r9 after we call __aeabi_read_tp [ARM] FDPIC: Force LSB bit for PC in Cortex-M architecture [ARM][testsuite] FDPIC: Skip unsupported tests [ARM][testsuite] FDPIC: Adjust scan-assembler patterns. [ARM][testsuite] FDPIC: Skip tests that don't work in PIC mode [ARM][testsuite] FDPIC: Handle *-*-uclinux* [ARM][testsuite] FDPIC: Enable tests on pie_enabled targets [ARM][testsuite] FDPIC: Adjust pr43698.c to avoid clash with uclibc. [ARM][testsuite] FDPIC: Skip tests using architectures unsupported by FDPIC config/futex.m4 | 2 +- config/tls.m4 | 2 +- gcc/config.gcc | 13 +- gcc/config/arm/arm-c.c | 2 + gcc/config/arm/arm-protos.h | 1 + gcc/config/arm/arm.c | 485 ++++++++++++++++++--- gcc/config/arm/arm.h | 16 +- gcc/config/arm/arm.md | 125 +++++- gcc/config/arm/arm.opt | 4 + gcc/config/arm/bpabi.h | 4 +- gcc/config/arm/linux-eabi.h | 7 +- gcc/config/arm/uclinuxfdpiceabi.h | 53 +++ gcc/config/arm/unspecs.md | 1 + gcc/doc/invoke.texi | 20 +- gcc/ginclude/unwind-arm-common.h | 2 +- gcc/testsuite/g++.dg/abi/forced.C | 2 +- gcc/testsuite/g++.dg/abi/guard2.C | 2 +- gcc/testsuite/g++.dg/cpp0x/noexcept03.C | 2 +- gcc/testsuite/g++.dg/ext/cleanup-10.C | 2 +- gcc/testsuite/g++.dg/ext/cleanup-11.C | 2 +- gcc/testsuite/g++.dg/ext/cleanup-8.C | 2 +- gcc/testsuite/g++.dg/ext/cleanup-9.C | 2 +- gcc/testsuite/g++.dg/ext/sync-4.C | 2 +- gcc/testsuite/g++.dg/ipa/comdat.C | 2 +- gcc/testsuite/g++.dg/ipa/devirt-c-7.C | 3 +- gcc/testsuite/g++.dg/ipa/ivinline-1.C | 2 +- gcc/testsuite/g++.dg/ipa/ivinline-2.C | 2 +- gcc/testsuite/g++.dg/ipa/ivinline-3.C | 2 +- gcc/testsuite/g++.dg/ipa/ivinline-4.C | 2 +- gcc/testsuite/g++.dg/ipa/ivinline-5.C | 2 +- gcc/testsuite/g++.dg/ipa/ivinline-7.C | 2 +- gcc/testsuite/g++.dg/ipa/ivinline-8.C | 2 +- gcc/testsuite/g++.dg/ipa/ivinline-9.C | 2 +- gcc/testsuite/g++.dg/other/anon5.C | 1 + gcc/testsuite/g++.dg/tls/pr79288.C | 2 +- gcc/testsuite/gcc.c-torture/compile/pr82096.c | 2 +- gcc/testsuite/gcc.dg/20020312-2.c | 1 + gcc/testsuite/gcc.dg/20041106-1.c | 2 +- gcc/testsuite/gcc.dg/addr_equal-1.c | 3 +- gcc/testsuite/gcc.dg/cleanup-10.c | 2 +- gcc/testsuite/gcc.dg/cleanup-11.c | 2 +- gcc/testsuite/gcc.dg/cleanup-8.c | 2 +- gcc/testsuite/gcc.dg/cleanup-9.c | 2 +- gcc/testsuite/gcc.dg/const-1.c | 2 +- gcc/testsuite/gcc.dg/fdata-sections-1.c | 2 +- gcc/testsuite/gcc.dg/fdata-sections-2.c | 2 +- gcc/testsuite/gcc.dg/ipa/pure-const-1.c | 2 +- gcc/testsuite/gcc.dg/noreturn-8.c | 2 +- gcc/testsuite/gcc.dg/pr33826.c | 3 +- gcc/testsuite/gcc.dg/pr39323-1.c | 2 +- gcc/testsuite/gcc.dg/pr39323-2.c | 2 +- gcc/testsuite/gcc.dg/pr39323-3.c | 2 +- gcc/testsuite/gcc.dg/pr65780-1.c | 2 +- gcc/testsuite/gcc.dg/pr65780-2.c | 2 +- gcc/testsuite/gcc.dg/pr67338.c | 2 +- gcc/testsuite/gcc.dg/pr78185.c | 2 +- gcc/testsuite/gcc.dg/pr83100-1.c | 2 +- gcc/testsuite/gcc.dg/pr83100-4.c | 2 +- gcc/testsuite/gcc.dg/strlenopt-12g.c | 2 +- gcc/testsuite/gcc.dg/strlenopt-14g.c | 2 +- gcc/testsuite/gcc.dg/strlenopt-14gf.c | 2 +- gcc/testsuite/gcc.dg/strlenopt-16g.c | 2 +- gcc/testsuite/gcc.dg/strlenopt-17g.c | 2 +- gcc/testsuite/gcc.dg/strlenopt-18g.c | 2 +- gcc/testsuite/gcc.dg/strlenopt-1f.c | 2 +- gcc/testsuite/gcc.dg/strlenopt-22g.c | 2 +- gcc/testsuite/gcc.dg/strlenopt-2f.c | 2 +- gcc/testsuite/gcc.dg/strlenopt-31g.c | 2 +- gcc/testsuite/gcc.dg/strlenopt-33g.c | 2 +- gcc/testsuite/gcc.dg/strlenopt-4g.c | 2 +- gcc/testsuite/gcc.dg/strlenopt-4gf.c | 2 +- gcc/testsuite/gcc.dg/strncmp-2.c | 2 +- gcc/testsuite/gcc.dg/struct-ret-3.c | 2 +- gcc/testsuite/gcc.dg/torture/ipa-pta-1.c | 2 +- gcc/testsuite/gcc.dg/torture/pr69760.c | 2 +- gcc/testsuite/gcc.dg/tree-ssa/alias-2.c | 2 +- gcc/testsuite/gcc.dg/tree-ssa/ipa-split-5.c | 2 +- gcc/testsuite/gcc.dg/tree-ssa/loadpre6.c | 2 +- gcc/testsuite/gcc.target/arm/20051215-1.c | 1 + .../gcc.target/arm/armv6-unaligned-load-ice.c | 1 + .../gcc.target/arm/attr-unaligned-load-ice.c | 1 + gcc/testsuite/gcc.target/arm/attr_arm-err.c | 1 + gcc/testsuite/gcc.target/arm/data-rel-2.c | 1 + gcc/testsuite/gcc.target/arm/data-rel-3.c | 1 + gcc/testsuite/gcc.target/arm/div64-unwinding.c | 2 +- gcc/testsuite/gcc.target/arm/eliminate.c | 2 +- gcc/testsuite/gcc.target/arm/ftest-armv4-arm.c | 1 + gcc/testsuite/gcc.target/arm/ftest-armv4t-arm.c | 1 + gcc/testsuite/gcc.target/arm/ftest-armv4t-thumb.c | 1 + gcc/testsuite/gcc.target/arm/ftest-armv5t-arm.c | 1 + gcc/testsuite/gcc.target/arm/ftest-armv5t-thumb.c | 1 + gcc/testsuite/gcc.target/arm/ftest-armv5te-arm.c | 1 + gcc/testsuite/gcc.target/arm/ftest-armv5te-thumb.c | 1 + gcc/testsuite/gcc.target/arm/ftest-armv6-arm.c | 1 + gcc/testsuite/gcc.target/arm/ftest-armv6-thumb.c | 1 + gcc/testsuite/gcc.target/arm/ftest-armv6k-arm.c | 1 + gcc/testsuite/gcc.target/arm/ftest-armv6k-thumb.c | 1 + gcc/testsuite/gcc.target/arm/ftest-armv6m-thumb.c | 1 + gcc/testsuite/gcc.target/arm/ftest-armv6t2-arm.c | 1 + gcc/testsuite/gcc.target/arm/ftest-armv6t2-thumb.c | 1 + gcc/testsuite/gcc.target/arm/ftest-armv6z-arm.c | 1 + gcc/testsuite/gcc.target/arm/ftest-armv6z-thumb.c | 1 + gcc/testsuite/gcc.target/arm/g2.c | 1 + gcc/testsuite/gcc.target/arm/interrupt-1.c | 6 +- gcc/testsuite/gcc.target/arm/interrupt-2.c | 6 +- gcc/testsuite/gcc.target/arm/ivopts-2.c | 2 +- gcc/testsuite/gcc.target/arm/ivopts-3.c | 2 +- gcc/testsuite/gcc.target/arm/ivopts-4.c | 2 +- gcc/testsuite/gcc.target/arm/ivopts-5.c | 2 +- gcc/testsuite/gcc.target/arm/macro_defs1.c | 1 + gcc/testsuite/gcc.target/arm/mmx-1.c | 1 + gcc/testsuite/gcc.target/arm/pr19599.c | 1 + gcc/testsuite/gcc.target/arm/pr40887.c | 1 + gcc/testsuite/gcc.target/arm/pr43597.c | 2 +- gcc/testsuite/gcc.target/arm/pr43698.c | 4 +- gcc/testsuite/gcc.target/arm/pr43920-2.c | 2 +- gcc/testsuite/gcc.target/arm/pr45701-1.c | 4 +- gcc/testsuite/gcc.target/arm/pr45701-2.c | 4 +- gcc/testsuite/gcc.target/arm/pr59858.c | 1 + gcc/testsuite/gcc.target/arm/pr61948.c | 1 + gcc/testsuite/gcc.target/arm/pr65647-2.c | 1 + gcc/testsuite/gcc.target/arm/pr66912.c | 2 +- gcc/testsuite/gcc.target/arm/pr70830.c | 3 +- gcc/testsuite/gcc.target/arm/pr77933-1.c | 1 + gcc/testsuite/gcc.target/arm/pr77933-2.c | 1 + gcc/testsuite/gcc.target/arm/pr79058.c | 1 + gcc/testsuite/gcc.target/arm/pr83712.c | 1 + .../gcc.target/arm/pragma_arch_switch_2.c | 1 + gcc/testsuite/gcc.target/arm/scd42-1.c | 1 + gcc/testsuite/gcc.target/arm/scd42-2.c | 1 + gcc/testsuite/gcc.target/arm/scd42-3.c | 1 + gcc/testsuite/gcc.target/arm/sibcall-1.c | 1 + gcc/testsuite/gcc.target/arm/stack-checking.c | 2 +- gcc/testsuite/gcc.target/arm/stack-red-zone.c | 2 +- gcc/testsuite/gcc.target/arm/synchronize.c | 2 +- gcc/testsuite/gcc.target/arm/tail-long-call.c | 1 + gcc/testsuite/gcc.target/arm/tlscall.c | 1 + gcc/testsuite/gcc.target/arm/vfp-longcall-apcs.c | 1 + gcc/testsuite/lib/target-supports.exp | 10 + libatomic/configure | 8 +- libatomic/configure.tgt | 2 +- libgcc/config.host | 4 +- libgcc/config/arm/linux-atomic.c | 55 ++- libgcc/config/arm/unwind-arm.c | 5 + libgcc/config/arm/unwind-arm.h | 31 +- libgcc/crtstuff.c | 18 + libgcc/unwind-arm-common.inc | 216 +++++++++ libgcc/unwind-pe.h | 17 + libitm/configure | 20 +- libitm/configure.tgt | 2 +- libsanitizer/configure.tgt | 3 + libstdc++-v3/acinclude.m4 | 12 +- libstdc++-v3/configure | 36 +- libstdc++-v3/configure.host | 6 +- libstdc++-v3/libsupc++/eh_personality.cc | 10 +- libtool.m4 | 14 +- 156 files changed, 1209 insertions(+), 217 deletions(-) create mode 100644 gcc/config/arm/uclinuxfdpiceabi.h -- 2.6.3