From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-m155101.qiye.163.com (mail-m155101.qiye.163.com [101.71.155.101]) by sourceware.org (Postfix) with ESMTPS id 398513861869 for ; Fri, 15 Dec 2023 10:06:45 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 398513861869 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=stu.xupt.edu.cn Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=stu.xupt.edu.cn ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 398513861869 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=101.71.155.101 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1702634810; cv=none; b=tEty/BJFQDPnTL3llcplsBs0AuoriOvHVb+DGAOf8zL7Wl1FHAFTGJKet4vsJzkw8pGd5iZASyaNK93JBK6gBu7oroJ4Y0yz5hRGWWPo8mjS0rsLD/0FTO+rL0Bfhm9XIGA8ipFMT8Lg3qAvSRku24Jw/6MVTJpAb+aQryCqkus= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1702634810; c=relaxed/simple; bh=uhKchkwG0lJESDUrOh7n8O7jQvxlCCkX8MHTrPLlck8=; h=From:To:Subject:Date:Message-Id:MIME-Version; b=Gipe8BTV374Uie0+ni1cDH3jrBq4xIl3F9245UZ6QntE7eDSCjbBe3HHnla5Dq7ifngRx7uO/B/xsApJ+dV2ZNn4TG5NsCWT0+aT90l9x8nx8hAwLMIAVIbYDmVh4f5B8HwuC76r7SDQTTWYD7oLq96r/zk8bC7QknzIg1r9jhE= ARC-Authentication-Results: i=1; server2.sourceware.org Received: from ubuntu.localdomain (unknown [111.18.37.203]) by mail-m121144.qiye.163.com (Hmail) with ESMTPA id A2E76AC0071; Fri, 15 Dec 2023 18:06:34 +0800 (CST) From: changjiachen To: binutils@sourceware.org Cc: xuchenghua@loongson.cn, chenglulu@loongson.cn, liuzhensong@loongson.cn, xry111@xry111.site, i.swmail@xen0n.name, maskray@google.com, cailulu@loongson.cn, luweining@loongson.cn, wanglei@loongson.cn, hejinyang@loongson.cn, Lazy_Linux@126.com, mengqinggang@loongson.cn, changjiachen Subject: [PATCH v3 0/5] LoongArch tls le model linker relaxation support. Date: Fri, 15 Dec 2023 18:06:28 +0800 Message-Id: <20231215100633.65397-1-changjiachen@stu.xupt.edu.cn> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFITzdXWS1ZQUlXWQ8JGhUIEh9ZQVkaQ0xPVkxMGExIGk4dGkNMSlUTARMWGhIXJBQOD1 lXWRgSC1lBWUpKSlVKQ1VITFVJS0hZV1kWGg8SFR0UWUFZT0tIVUpKS0hKQ1VKS0tVS1kG X-HM-Tid: 0a8c6cf1307fb039kuuua2e76ac0071 X-HM-MType: 10 X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6Pwg6ODo6Ajw8Nzc5K1E#PVEO NDUaCytVSlVKTEtJTUhPTEJOQklNVTMWGhIXVRgTGhUcERIaGBMeFTsIDw5VAw4LD1UeHw5VGBVF WVdZEgtZQVlKSkpVSkNVSExVSUtIWVdZCAFZQU5IT043Bg++ X-Spam-Status: No, score=-5.5 required=5.0 tests=BAYES_00,KAM_DMARC_STATUS,SPF_HELO_NONE,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: This is the v3 version of patches to support loongarch linker tls le model relax. Changes from v2: * Some problems in the v2 patch are answered as follows. Question: use ".reloc.,R_LARCH_TLS_LE_ADD_R,sym" to generate relocation or %le_add_r(sym) to generate relocation. Reply: First, after a test, the R_LARCH_TLS_LE_ADD_R can be generated using ".reloc.,R_LARCH_TLS_LE_ADD_R,sym", or "%le_add_r(sym)". However,".reloc" generates R_LARCH_TLS_LE_ADD_R relocation directly, and it is not easy to add "R_LARCH_RELAX" relocation. "%le_add_r(sym)" Adds the R_LARCH_TLS_LE_ADD_R and R_LARCH_RELAX relocation commands, which is easier to implement. Of course, there is another way to generate ".reloc.,R_LARCH_TLS_LE_ADD_R,sym" and ".reloc.,R_LARCH_RELAX,sym" directly in gcc. However, this implementation causes the -mrelax/-mno-relax option to be set in both gcc and gas, which can be confusing. One problem with this is that add.d $r12,$r12,$r2 and add.d $r12,$r12,$r2, %le_add_r(sym) are too similar, so I have to add comments in loongarch_fix_opcodes[]. The goal is to make it as clear as possible to developers. * modified code format in loongarch_relax_tls_le(),use loongarch_relax_delete_bytes() instead of R_LARCH_DELETE to implement the delete instruction operation. * modified R_LARCH_TLS_LE_ADD_R type_name:"tls_le_add_r"-->"le_add_r". * modify comment information. * some comments added to "add.d" in loongarch_opcode loongarch_fix_opcodes[]. * remove some unnecessary content from the ld/testsuite/ld-loongarch test case. Changes from v1: * Modified v1-0000-cover-letter.patch part of the explanatory content. Before Modify: example: __thread int a = 1; old insn sequence: lu12i.w $r12,%le_hi20_r(a) ori $r12,$r12,%le_lo12_r(a) add.d $r12,$r12,$r2,%le_add_r(a) li.w $r13,$r0,1 stptr.w $r13,$r12,0 new insn sequence: lu12i.w $r12,%le_hi20_r(a) add.d $r12,$r12,$r2,%le_add_r(a) li.w $r13,$r0,1 st.w $r13,$r12,%le_lo12_r(a) After Modify: example: __thread int a = 1; old insn sequence(at the O0 optimization level): lu12i.w $r12,%le_hi20(a) ori $r12,$r12,%le_lo12(a) add.d $r12,$r12,$r2 addi.w $r13,$r0,1 stptr.w $r13,$r12,0 new insn sequence(at the O0 optimization level): lu12i.w $r12,%le_hi20_r(a) add.d $r12,$r12,$r2,%le_add_r(a) addi.w $r13,$r0,1 st.w $r13,$r12,%le_lo12_r(a) changjiachen (5): LoongArch: bfd: Add support for tls le relax. LoongArch: include: Add support for tls le relax. LoongArch: opcodes: Add support for tls le relax. LoongArch: gas: Add support for tls le relax. LoongArch: ld: Add support for tls le relax. bfd/bfd-in2.h | 4 + bfd/elfnn-loongarch.c | 76 +++++++++ bfd/elfxx-loongarch.c | 50 ++++++ bfd/libbfd.h | 3 + bfd/reloc.c | 6 + gas/config/tc-loongarch.c | 12 +- gas/testsuite/gas/loongarch/reloc.d | 18 +++ gas/testsuite/gas/loongarch/reloc.s | 11 ++ include/elf/loongarch.h | 12 ++ ld/testsuite/ld-loongarch-elf/old-tls-le.s | 19 +++ .../relax-bound-check-tls-le.s | 48 ++++++ ld/testsuite/ld-loongarch-elf/relax-tls-le.s | 17 ++ ld/testsuite/ld-loongarch-elf/relax.exp | 151 +++++++++++++++++- .../tls-relax-compatible-check-new.s | 29 ++++ .../tls-relax-compatible-check-old.s | 27 ++++ opcodes/loongarch-opc.c | 3 +- 16 files changed, 482 insertions(+), 4 deletions(-) create mode 100644 ld/testsuite/ld-loongarch-elf/old-tls-le.s create mode 100644 ld/testsuite/ld-loongarch-elf/relax-bound-check-tls-le.s create mode 100644 ld/testsuite/ld-loongarch-elf/relax-tls-le.s create mode 100644 ld/testsuite/ld-loongarch-elf/tls-relax-compatible-check-new.s create mode 100644 ld/testsuite/ld-loongarch-elf/tls-relax-compatible-check-old.s -- 2.40.0