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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 67FB3D41C20 for ; Wed, 13 Nov 2024 09:21:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=+hUbPYoNCvzSbLtb9XM/tX3BhhJseN/C4la6EBJndIE=; b=leqiH/XiMZTHpP mSoyCpHMkWVa6WM8w7CdwUnl8m6oCccJ4YKsf/GHc/PNUxBKt2mxp7pAhbna033sy4c7MW//jHLhB RJ9dLBoACzgXyJ3F8lR5J46aiqKWl4HS2ruoDiQBoipX3JJRNahfAm9VG/oLenFmx/u3eZYNLVMDC 2iJXKyOk/jGSVinC/OSHTDCasQFtKlS3EJbMpTZkb8q+qc4fnGslyQTq5bl78SipfsmVNUeTcHNAa fPSfrs3iTzzXC5X8/Nc1OuYRrkbGUdswhbiFadY+qE43bUtOsNwBscxUwzCmaH8XiyIzJUCABft7C BLFRgdjbvuVxCNhxDL/A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tB9Z1-00000006E2x-2I8p; Wed, 13 Nov 2024 09:21:27 +0000 Received: from imap5.colo.codethink.co.uk ([78.40.148.171]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tB9Uu-00000006DVs-2UeR for linux-riscv@lists.infradead.org; Wed, 13 Nov 2024 09:17:13 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=codethink.co.uk; s=imap5-20230908; h=Sender:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=BAuGBA6SeGp8hx6Y+sRmy9j/6zVyRjrmgZdRmAJIH6o=; b=bHf1CG/GiYmTpAw95DwbJPi10s IQuKe8QHiI0G03Kl4dqgT+hEEsM8j5tXQeihK5qGwOZcwUhJ5AoC+cyNawxvKNtei0dLFiKxlXVhc x7jRZ0fV4MMnhE8DuudWFO8PyljMoJMrnC7FQqWunWnopKQEvr5L3y2PEUCBoeMmolsn97DsEww8F uUFMRWCj2FKpSRIDB52PfvIl0cgWJDz1Epx+gvyMG9PlyCCycdt9qPY8G3RWK2LcvRbcWIryo2061 UVA3L0hnF+z1dAw/2p3srMu/PBYpCiCegQbp9SbPeqNtVQLjrEyjWWAOO8T6J00Pe5ynxq9yVHeCn E6l2scZg==; Received: from [63.135.74.212] (helo=rainbowdash) by imap5.colo.codethink.co.uk with esmtpsa (Exim 4.94.2 #2 (Debian)) id 1tB9Ul-004RXL-9h; Wed, 13 Nov 2024 09:17:04 +0000 Received: from ben by rainbowdash with local (Exim 4.98) (envelope-from ) id 1tB9Ul-0000000D939-3qMb; Wed, 13 Nov 2024 09:17:03 +0000 From: Ben Dooks To: linux-riscv@lists.infradead.org Cc: palmer@dabbelt.com, ajones@ventanamicro.com, alex@ghiti.fr, Ben Dooks Subject: [PATCH 1/3] riscv: ptrace: add regs_set_register() Date: Wed, 13 Nov 2024 09:17:01 +0000 Message-Id: <20241113091703.3133017-2-ben.dooks@codethink.co.uk> X-Mailer: git-send-email 2.37.2.352.g3c44437643 In-Reply-To: <20241113091703.3133017-1-ben.dooks@codethink.co.uk> References: <20241113091703.3133017-1-ben.dooks@codethink.co.uk> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241113_011712_701864_745A7B5D X-CRM114-Status: GOOD ( 11.34 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Since we have regs_get_register() and we could use the set counterpart for things like fixing up traps, add regs_set_register() to set a pt_regs value from offset. Signed-off-by: Ben Dooks --- arch/riscv/include/asm/ptrace.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/arch/riscv/include/asm/ptrace.h b/arch/riscv/include/asm/ptrace.h index b5b0adcc85c1..66fc1795141d 100644 --- a/arch/riscv/include/asm/ptrace.h +++ b/arch/riscv/include/asm/ptrace.h @@ -143,6 +143,26 @@ static inline unsigned long regs_get_register(struct pt_regs *regs, return *(unsigned long *)((unsigned long)regs + offset); } +/** + * regs_set_register() - set register value from its offset + * @regs: pt_regs from which register value is gotten + * @offset: offset of the register. + * @to: value to set register to + * + * regs_set_register sets the value @to to a register whose offset from @regs. + * The @offset is the offset of the register in struct pt_regs. + * If @offset is bigger than MAX_REG_OFFSET, this will ignore the write. + */ +static inline void regs_set_register(struct pt_regs *regs, + unsigned int offset, + unsigned long to) +{ + if (unlikely(offset > MAX_REG_OFFSET)) + return; + + *(unsigned long *)((unsigned long)regs + offset) = to; +} + /** * regs_get_kernel_argument() - get Nth function argument in kernel * @regs: pt_regs of that context -- 2.37.2.352.g3c44437643 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv