From nobody Sat Nov 23 17:45:47 2024 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 1E8D11632E8 for ; Fri, 22 Nov 2024 04:51:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.242.206.163 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732251104; cv=none; b=TLuIAAI7YDg8htpkJHn0TNSilxCd55YcInzgIRrpLM8WqNeuYRdW4aPDjRxfYl6O6oU/JLbARBd2FmBOF9avh9iPRY0I9pky3PJTPNeppVutL8PdwxlSlEt0eCmQ3fOO743FQCJ+l9Gj6pfEwqp9suFj25iFZC05hK8oP4/JTDg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732251104; c=relaxed/simple; bh=sXJC7+BIzrkdr2c8xg26yJGufdpB5vL4s7bxiuKEKkk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=QiRYQDzcOsqlfSlqNFUZ42y5/plzyL6fn8xd7JQU0VnC1fsy+t2Id0WR7HQil+se30JkLPnoXc/XR/tLt24yDhR5LeaSKyuZG9dTZWy2usDGmEBnRAgfcdw9bjsGqqJy1t+ZImBD1UDFU6O/0KFv1EjeaNjp2nMHRZXCbM/Fmvo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn; spf=pass smtp.mailfrom=loongson.cn; arc=none smtp.client-ip=114.242.206.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=loongson.cn Received: from loongson.cn (unknown [113.200.148.30]) by gateway (Coremail) with SMTP id _____8BxPOKMDUBn_7xFAA--.5104S3; Fri, 22 Nov 2024 12:50:20 +0800 (CST) Received: from linux.localdomain (unknown [113.200.148.30]) by front1 (Coremail) with SMTP id qMiowMCxdcCIDUBnIJJiAA--.33733S6; Fri, 22 Nov 2024 12:50:19 +0800 (CST) From: Tiezhu Yang To: Huacai Chen , Josh Poimboeuf , Peter Zijlstra Cc: loongarch@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH v4 04/10] objtool: Handle PC relative relocation type Date: Fri, 22 Nov 2024 12:49:59 +0800 Message-ID: <20241122045005.14617-5-yangtiezhu@loongson.cn> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20241122045005.14617-1-yangtiezhu@loongson.cn> References: <20241122045005.14617-1-yangtiezhu@loongson.cn> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qMiowMCxdcCIDUBnIJJiAA--.33733S6 X-CM-SenderInfo: p1dqw3xlh2x3gn0dqz5rrqw2lrqou0/ X-Coremail-Antispam: 1Uk129KBj93XoW7uFW7tr1fWw4DuF1kWFW7Awc_yoW8Jw4xpF 9xuw45KrsI9r17WwsrKa1kWrW5Cws7WryxJrW0kryrAF9xZF1rKay2ka15Ca1UXw1Fva1I vFyYkFy7Aa1DA3gCm3ZEXasCq-sJn29KB7ZKAUJUUUUr529EdanIXcx71UUUUU7KY7ZEXa sCq-sGcSsGvfJ3Ic02F40EFcxC0VAKzVAqx4xG6I80ebIjqfuFe4nvWSU5nxnvy29KBjDU 0xBIdaVrnRJUUU9Yb4IE77IF4wAFF20E14v26r1j6r4UM7CY07I20VC2zVCF04k26cxKx2 IYs7xG6rWj6s0DM7CIcVAFz4kK6r1Y6r17M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48v e4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_Gr0_Xr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI 0_Gr0_Cr1l84ACjcxK6I8E87Iv67AKxVWxJVW8Jr1l84ACjcxK6I8E87Iv6xkF7I0E14v2 6r4UJVWxJr1ln4kS14v26r1Y6r17M2AIxVAIcxkEcVAq07x20xvEncxIr21l57IF6xkI12 xvs2x26I8E6xACxx1l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xIIjxv20xvE14v26r1q 6rW5McIj6I8E87Iv67AKxVW8JVWxJwAm72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64 vIr41l42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1l4IxYO2xFxVAFwI0_ Jrv_JF1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1V AY17CE14v26r126r1DMIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Gr0_Xr1lIxAI cVC0I7IYx2IY6xkF7I0E14v26r4j6F4UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42 IY6I8E87Iv67AKxVW8JVWxJwCI42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWIev Ja73UjIFyTuYvjxU4AhLUUUUU Content-Type: text/plain; charset="utf-8" When compling with Clang on LoongArch, there exists 32 bit PC relative relocation type, it needs to get the offset with "S + A - PC" according to the spec of "ELF for the LoongArch Architecture". This is preparation for later patch on LoongArch, there is no effect for the other archs with this patch. Link: https://github.com/loongson/la-abi-specs/blob/release/laelf.adoc Signed-off-by: Tiezhu Yang --- tools/objtool/check.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 19d1263e64e4..8733ca620cca 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -2126,6 +2126,11 @@ static int add_jump_table(struct objtool_file *file,= struct instruction *insn, if (reloc->sym->type =3D=3D STT_SECTION) { /* Addend field in the relocation entry associated with the symbol */ offset =3D reloc_addend(reloc); + /* Handle the special cases compiled with Clang on LoongArch */ + if (file->elf->ehdr.e_machine =3D=3D EM_LOONGARCH && + reloc_type(reloc) =3D=3D R_LARCH_32_PCREL) + offset =3D reloc->sym->offset + reloc_addend(reloc) - + (reloc_offset(reloc) - reloc_offset(table)); } else { /* The address of the symbol in the relocation entry */ offset =3D reloc->sym->offset; --=20 2.42.0