From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from simark.ca by simark.ca with LMTP id WdLgDtoD3mLRBxoAWB0awg (envelope-from ) for ; Sun, 24 Jul 2022 22:45:46 -0400 Received: by simark.ca (Postfix, from userid 112) id 2AADB1E5EA; Sun, 24 Jul 2022 22:45:46 -0400 (EDT) Authentication-Results: simark.ca; dkim=pass (1024-bit key; secure) header.d=sourceware.org header.i=@sourceware.org header.a=rsa-sha256 header.s=default header.b=tc53hBsl; dkim-atps=neutral X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on simark.ca X-Spam-Level: X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RDNS_DYNAMIC, UNPARSEABLE_RELAY,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 Received: from sourceware.org (ip-8-43-85-97.sourceware.org [8.43.85.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by simark.ca (Postfix) with ESMTPS id 01B691E13B for ; Sun, 24 Jul 2022 22:45:38 -0400 (EDT) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id F0B373841474 for ; Mon, 25 Jul 2022 02:45:37 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org F0B373841474 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1658717138; bh=sm8tf3gGlSarfEfVN1NfRi+r0Wkw1j79RMRQTSh2N8w=; h=To:Subject:Date:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:Cc:From; b=tc53hBslHf4SxdopPhO0GO08FVmsXht6xMraYgEnGKyys1Grac0oRjDbFh4c/W/Y8 LaROTDGOSFH+B4FyhLeex1nbNJHuwQCk7I2K5fXoQ3mqGPu3LXbZAj6RvCI6UlmO7a N5J4sDRDbN++N932dkJYOAxJmjobKf3UmoSNYOMo= Received: from out30-133.freemail.mail.aliyun.com (out30-133.freemail.mail.aliyun.com [115.124.30.133]) by sourceware.org (Postfix) with ESMTPS id DFCB33841442 for ; Mon, 25 Jul 2022 02:45:16 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org DFCB33841442 X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R131e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=ay29a033018046060; MF=jiangshuai_li@linux.alibaba.com; NM=1; PH=DS; RN=2; SR=0; TI=SMTPD_---0VKFy8Eu_1658717112; Received: from lijsh-VirtualBox.hz.ali.com(mailfrom:jiangshuai_li@linux.alibaba.com fp:SMTPD_---0VKFy8Eu_1658717112) by smtp.aliyun-inc.com; Mon, 25 Jul 2022 10:45:12 +0800 To: gdb-patches@sourceware.org Subject: [PATCH v2] gdb/csky support .reg2 for kernel 4.x and later Date: Mon, 25 Jul 2022 10:44:59 +0800 Message-Id: <20220725024459.21042-1-jiangshuai_li@linux.alibaba.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: gdb-patches@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gdb-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Jiangshuai Li via Gdb-patches Reply-To: Jiangshuai Li Cc: Jiangshuai Li Errors-To: gdb-patches-bounces+public-inbox=simark.ca@sourceware.org Sender: "Gdb-patches" When kernel's version >= 4.x, the size of .reg2 section will be 400. Contents of .reg2 are { unsigned long vr[96]; // vr0~vr15 & fr16~fr31 unsigned long fcr; unsigned long fesr; unsigned long fid; unsigned long reserved; }; --- gdb/csky-linux-tdep.c | 150 +++++++++++++++++++++++++++++++++++++----- 1 file changed, 134 insertions(+), 16 deletions(-) diff --git a/gdb/csky-linux-tdep.c b/gdb/csky-linux-tdep.c index 440045e7713..aa85a299922 100644 --- a/gdb/csky-linux-tdep.c +++ b/gdb/csky-linux-tdep.c @@ -36,6 +36,8 @@ #define SIZEOF_CSKY_GREGSET 34*4 /* Float regset fesr fsr fr0-fr31 for CK810. */ #define SIZEOF_CSKY_FREGSET 34*4 +/* Float regset vr0~vr15 fr15~fr31, reserved for CK810 when kernel 4.x. */ +#define SIZEOF_CSKY_FREGSET_K4X 400 /* Offset mapping table from core_section to regcache of general registers for ck810. */ @@ -118,15 +120,76 @@ csky_supply_fregset (const struct regset *regset, int fregset_num = ARRAY_SIZE (csky_fregset_offset); gdb_assert (len >= SIZEOF_CSKY_FREGSET); - for (i = 0; i < fregset_num; i++) + if (len == SIZEOF_CSKY_FREGSET) { - if ((regnum == csky_fregset_offset[i] || regnum == -1) - && csky_fregset_offset[i] != -1) - { - int num = csky_fregset_offset[i]; - offset += register_size (gdbarch, num); - regcache->raw_supply (csky_fregset_offset[i], fregs + offset); - } + for (i = 0; i < fregset_num; i++) + { + if ((regnum == csky_fregset_offset[i] || regnum == -1) + && csky_fregset_offset[i] != -1) + { + int num = csky_fregset_offset[i]; + offset += register_size (gdbarch, num); + regcache->raw_supply (csky_fregset_offset[i], fregs + offset); + } + } + } + else if (len == SIZEOF_CSKY_FREGSET_K4X) + { + /* When kernel version >= 4.x, .reg2 size will be 400. + Contents is { + unsigned long vr[96]; // vr0~vr15 + fr16~fr31 + unsigned long fcr; + unsigned long fesr; + unsigned long fid; + unsigned long reserved; + } */ + int fcr_regno[] = {122, 123, 121}; /* fcr, fesr, fid. */ + + /* Supply vr0~vr15. */ + for (i = 0; i < 16; i ++) + { + if (gdbarch_register_name (gdbarch, (CSKY_VR0_REGNUM + i))) + { + offset = 16 * i; + regcache->raw_supply (CSKY_VR0_REGNUM + i, + fregs + offset); + } + } + /* Supply fr0~fr15. */ + for (i = 0; i < 16; i ++) + { + if (gdbarch_register_name (gdbarch, (CSKY_FR0_REGNUM + i))) + { + offset = 16 * i; + regcache->raw_supply (CSKY_FR0_REGNUM + i, + fregs + offset); + } + } + /* Supply fr16~fr31. */ + for (i = 0; i < 16; i ++) + { + if (gdbarch_register_name (gdbarch, (CSKY_FR16_REGNUM + i))) + { + offset = (16 * 16) + (8 * i); + regcache->raw_supply (CSKY_FR16_REGNUM + i, + fregs + offset); + } + } + /* Supply fcr, fesr, fid. */ + for (i = 0; i < 3; i ++) + { + if (gdbarch_register_name (gdbarch, fcr_regno[i])) + { + offset = (16 * 16) + (16 * 8) + (4 * i); + regcache->raw_supply (fcr_regno[i], + fregs + offset); + } + } + } + else + { + warning (_("Unknow size %ld of section .reg2, can not get value" + " of float registers."), len); } } @@ -144,14 +207,66 @@ csky_collect_fregset (const struct regset *regset, int offset = 0; gdb_assert (len >= SIZEOF_CSKY_FREGSET); - for (regno = 0; regno < fregset_num; regno++) + if (len == SIZEOF_CSKY_FREGSET) + { + for (regno = 0; regno < fregset_num; regno++) + { + if ((regnum == csky_fregset_offset[regno] || regnum == -1) + && csky_fregset_offset[regno] != -1) + { + offset += register_size (gdbarch, csky_fregset_offset[regno]); + regcache->raw_collect (regno, fregs + offset); + } + } + } + else if (len == SIZEOF_CSKY_FREGSET_K4X) + { + /* When kernel version >= 4.x, .reg2 size will be 400. + Contents is { + unsigned long vr[96]; // vr0~vr15 + fr16~fr31 + unsigned long fcr; + unsigned long fesr; + unsigned long fid; + unsigned long reserved; + } */ + int i = 0; + int fcr_regno[] = {122, 123, 121}; /* fcr, fesr, fid. */ + + /* Supply vr0~vr15. */ + for (i = 0; i < 16; i ++) + { + if (gdbarch_register_name (gdbarch, (CSKY_VR0_REGNUM + i))) + { + offset = 16 * i; + regcache ->raw_collect (CSKY_VR0_REGNUM + i, + fregs + offset); + } + } + /* Supply fr16~fr31. */ + for (i = 0; i < 16; i ++) + { + if (gdbarch_register_name (gdbarch, (CSKY_FR16_REGNUM + i))) + { + offset = (16 * 16) + (8 * i); + regcache ->raw_collect (CSKY_FR16_REGNUM + i, + fregs + offset); + } + } + /* Supply fcr, fesr, fid. */ + for (i = 0; i < 3; i ++) + { + if (gdbarch_register_name (gdbarch, fcr_regno[i])) + { + offset = (16 * 16) + (16 * 8) + (4 * i); + regcache ->raw_collect (fcr_regno[i], + fregs + offset); + } + } + } + else { - if ((regnum == csky_fregset_offset[regno] || regnum == -1) - && csky_fregset_offset[regno] != -1) - { - offset += register_size (gdbarch, csky_fregset_offset[regno]); - regcache->raw_collect (regno, fregs + offset); - } + warning (_("Unknow size %ld of section .reg2, will not set value" + " of float registers."), len); } } @@ -166,7 +281,10 @@ static const struct regset csky_regset_float = { NULL, csky_supply_fregset, - csky_collect_fregset + csky_collect_fregset, + /* Allow .reg2 has different size, buf size of .reg2 should + always is or bigger than SIZEOF_CSKY_FREGSET. */ + 1 }; /* Iterate over core file register note sections. */ -- 2.25.1