From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) by sourceware.org (Postfix) with ESMTPS id 7D9E33858C52 for ; Tue, 27 Sep 2022 00:23:42 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 7D9E33858C52 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=linux.ibm.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=linux.ibm.com Received: from pps.filterd (m0098421.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 28QLuIUE002925 for ; Tue, 27 Sep 2022 00:23:42 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=zk1uAokqDfftWvWauoSXssdkCp8cgI0zRXNaqBRSaxs=; b=rKvsy/CzYeH7zy4rDdUwrmQo/jrtqH/J9tnBLz46/rGTxw5QcUsIIUUv/MMukbCWCQi5 iV2ibX8DcD0XNwFQ//Ie4704SD5HQCK2iCEW79VA0yWSIewUlag7UxHJ1zvHvgbZKawx Hv3Zxqp93HojFfoLhHfLijE1M7Mlguk4N2tqlzP7p9QYjEFxtCEYarBsU4M274+5UOWB M1UB7hqJbIBIHTeQsHogCwqdTm47EZOvtGQvOscJSKcEBO6vS0gj2mw7MCQuThGL4LJz Mjp1z7uGZYpR4L5gRJq9vF3TfElUwRiIRu6rfuUaT6mRc1yWJQbdd8nuMp9Hf95SqIXV kA== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3jumefujq8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for ; 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Tue, 27 Sep 2022 00:23:36 GMT Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6DB6EAE04D; Tue, 27 Sep 2022 00:23:36 +0000 (GMT) Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 35662AE045; Tue, 27 Sep 2022 00:23:36 +0000 (GMT) Received: from heavy.ibmuc.com (unknown [9.171.90.176]) by d06av26.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 27 Sep 2022 00:23:36 +0000 (GMT) From: Ilya Leoshkevich To: Jakub Jelinek Cc: gcc-patches@gcc.gnu.org, Ilya Leoshkevich Subject: [PATCH v5 1/2] asan: specify alignment for LASANPC labels Date: Tue, 27 Sep 2022 02:23:33 +0200 Message-Id: <20220927002334.651057-2-iii@linux.ibm.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220927002334.651057-1-iii@linux.ibm.com> References: <20220927002334.651057-1-iii@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: xGpyEAlBZzVmaFF7Q65rAVyfJ7zPznGz X-Proofpoint-GUID: m-ogY8qHjy9K5TdK0barAUVRqzUDhQFp X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.528,FMLib:17.11.122.1 definitions=2022-09-26_11,2022-09-22_02,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 malwarescore=0 suspectscore=0 bulkscore=0 priorityscore=1501 lowpriorityscore=0 clxscore=1015 spamscore=0 impostorscore=0 phishscore=0 mlxscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2209130000 definitions=main-2209260149 X-Spam-Status: No, score=-11.3 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,GIT_PATCH_0,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS,TXREP 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: gcc/ChangeLog: 2020-06-30 Ilya Leoshkevich * asan.cc (asan_emit_stack_protection): Use CODE_LABEL_BOUNDARY. * defaults.h (CODE_LABEL_BOUNDARY): New macro. * doc/tm.texi: Document CODE_LABEL_BOUNDARY. * doc/tm.texi.in: Likewise. --- gcc/asan.cc | 1 + gcc/defaults.h | 5 +++++ gcc/doc/tm.texi | 4 ++++ gcc/doc/tm.texi.in | 4 ++++ 4 files changed, 14 insertions(+) diff --git a/gcc/asan.cc b/gcc/asan.cc index 8276f12cc69..62f50ee769b 100644 --- a/gcc/asan.cc +++ b/gcc/asan.cc @@ -1960,6 +1960,7 @@ asan_emit_stack_protection (rtx base, rtx pbase, unsigned int alignb, DECL_INITIAL (decl) = decl; TREE_ASM_WRITTEN (decl) = 1; TREE_ASM_WRITTEN (id) = 1; + SET_DECL_ALIGN (decl, CODE_LABEL_BOUNDARY); emit_move_insn (mem, expand_normal (build_fold_addr_expr (decl))); shadow_base = expand_binop (Pmode, lshr_optab, base, gen_int_shift_amount (Pmode, ASAN_SHADOW_SHIFT), diff --git a/gcc/defaults.h b/gcc/defaults.h index 953605c1627..52a471cf08e 100644 --- a/gcc/defaults.h +++ b/gcc/defaults.h @@ -1455,4 +1455,9 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see typedef TARGET_UNIT target_unit; #endif +/* Alignment required for a code label, in bits. */ +#ifndef CODE_LABEL_BOUNDARY +#define CODE_LABEL_BOUNDARY BITS_PER_UNIT +#endif + #endif /* ! GCC_DEFAULTS_H */ diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index 858bfb80cec..cc588ee23b5 100644 --- a/gcc/doc/tm.texi +++ b/gcc/doc/tm.texi @@ -1075,6 +1075,10 @@ to a value equal to or larger than @code{STACK_BOUNDARY}. Alignment required for a function entry point, in bits. @end defmac +@defmac CODE_LABEL_BOUNDARY +Alignment required for a code label, in bits. +@end defmac + @defmac BIGGEST_ALIGNMENT Biggest alignment that any data type can require on this machine, in bits. Note that this is not the biggest alignment that is supported, diff --git a/gcc/doc/tm.texi.in b/gcc/doc/tm.texi.in index 21b849ea32a..a0b725b0685 100644 --- a/gcc/doc/tm.texi.in +++ b/gcc/doc/tm.texi.in @@ -971,6 +971,10 @@ to a value equal to or larger than @code{STACK_BOUNDARY}. Alignment required for a function entry point, in bits. @end defmac +@defmac CODE_LABEL_BOUNDARY +Alignment required for a code label, in bits. +@end defmac + @defmac BIGGEST_ALIGNMENT Biggest alignment that any data type can require on this machine, in bits. Note that this is not the biggest alignment that is supported, -- 2.37.2