From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E5CA0C433E3 for ; Mon, 29 Jun 2020 18:44:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D11382064B for ; Mon, 29 Jun 2020 18:44:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729195AbgF2SoA (ORCPT ); Mon, 29 Jun 2020 14:44:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38402 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729140AbgF2Smw (ORCPT ); Mon, 29 Jun 2020 14:42:52 -0400 Received: from ZenIV.linux.org.uk (zeniv.linux.org.uk [IPv6:2002:c35c:fd02::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 59136C033C30; Mon, 29 Jun 2020 11:26:38 -0700 (PDT) Received: from viro by ZenIV.linux.org.uk with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jpyUD-002Dwm-0p; Mon, 29 Jun 2020 18:26:33 +0000 From: Al Viro To: Linus Torvalds Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, David Miller , Tony Luck , Will Deacon Subject: [PATCH 33/41] hexagon: switch to ->get2() Date: Mon, 29 Jun 2020 19:26:20 +0100 Message-Id: <20200629182628.529995-33-viro@ZenIV.linux.org.uk> X-Mailer: git-send-email 2.25.4 In-Reply-To: <20200629182628.529995-1-viro@ZenIV.linux.org.uk> References: <20200629182349.GA2786714@ZenIV.linux.org.uk> <20200629182628.529995-1-viro@ZenIV.linux.org.uk> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Al Viro Signed-off-by: Al Viro --- arch/hexagon/kernel/ptrace.c | 62 +++++++++++++++----------------------------- 1 file changed, 21 insertions(+), 41 deletions(-) diff --git a/arch/hexagon/kernel/ptrace.c b/arch/hexagon/kernel/ptrace.c index dcbf7ea960cc..fa6287d1a061 100644 --- a/arch/hexagon/kernel/ptrace.c +++ b/arch/hexagon/kernel/ptrace.c @@ -35,58 +35,38 @@ void user_disable_single_step(struct task_struct *child) static int genregs_get(struct task_struct *target, const struct user_regset *regset, - unsigned int pos, unsigned int count, - void *kbuf, void __user *ubuf) + srtuct membuf to) { - int ret; - unsigned int dummy; struct pt_regs *regs = task_pt_regs(target); - - if (!regs) - return -EIO; - /* The general idea here is that the copyout must happen in * exactly the same order in which the userspace expects these * regs. Now, the sequence in userspace does not match the * sequence in the kernel, so everything past the 32 gprs * happens one at a time. */ - ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, - ®s->r00, 0, 32*sizeof(unsigned long)); - -#define ONEXT(KPT_REG, USR_REG) \ - if (!ret) \ - ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, \ - KPT_REG, offsetof(struct user_regs_struct, USR_REG), \ - offsetof(struct user_regs_struct, USR_REG) + \ - sizeof(unsigned long)); - + membuf_write(&to, ®s->r00, 32*sizeof(unsigned long)); /* Must be exactly same sequence as struct user_regs_struct */ - ONEXT(®s->sa0, sa0); - ONEXT(®s->lc0, lc0); - ONEXT(®s->sa1, sa1); - ONEXT(®s->lc1, lc1); - ONEXT(®s->m0, m0); - ONEXT(®s->m1, m1); - ONEXT(®s->usr, usr); - ONEXT(®s->preds, p3_0); - ONEXT(®s->gp, gp); - ONEXT(®s->ugp, ugp); - ONEXT(&pt_elr(regs), pc); - dummy = pt_cause(regs); - ONEXT(&dummy, cause); - ONEXT(&pt_badva(regs), badva); + membuf_store(&to, regs->sa0); + membuf_store(&to, regs->lc0); + membuf_store(&to, regs->sa1); + membuf_store(&to, regs->lc1); + membuf_store(&to, regs->m0); + membuf_store(&to, regs->m1); + membuf_store(&to, regs->usr); + membuf_store(&to, regs->p3_0); + membuf_store(&to, regs->gp); + membuf_store(&to, regs->ugp); + membuf_store(&to, pt_elr(regs)); // pc + membuf_store(&to, (unsigned long)pt_cause(regs)); // cause + membuf_store(&to, pt_badva(regs)); // badva #if CONFIG_HEXAGON_ARCH_VERSION >=4 - ONEXT(®s->cs0, cs0); - ONEXT(®s->cs1, cs1); + membuf_store(&to, regs->cs0); + membuf_store(&to, regs->cs1); + return membuf_zero(&to, sizeof(unsigned long)); +#else + return membuf_zero(&to, 3 * sizeof(unsigned long)); #endif - - /* Pad the rest with zeros, if needed */ - if (!ret) - ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, - offsetof(struct user_regs_struct, pad1), -1); - return ret; } static int genregs_set(struct task_struct *target, @@ -159,7 +139,7 @@ static const struct user_regset hexagon_regsets[] = { .n = ELF_NGREG, .size = sizeof(unsigned long), .align = sizeof(unsigned long), - .get = genregs_get, + .get2 = genregs_get, .set = genregs_set, }, }; -- 2.11.0