From patchwork Sun Mar 8 09:49:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 11425545 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3E1CB92A for ; Sun, 8 Mar 2020 09:53:56 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 18CBC2084E for ; Sun, 8 Mar 2020 09:53:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="jdvDgv3P"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="DrRo8Neg" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 18CBC2084E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-riscv-bounces+patchwork-linux-riscv=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:MIME-Version: Content-Type:Content-Transfer-Encoding:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=0TYySrMgV1GpoRDFmilp792fBxdy4Xrh2+yD1i+tnII=; b=jdvDgv3Pnz6URH Wu2OOxuKJMkFGkEIstjM3PUSvk1esOD76StoZdsbzdeGimQRPeCX7woWckcsIVjAaC3aS3Phskbnk 7eVWl+sNzsCQnqMlpL41dYHt3u7w2B2IXfbzE0KIZSJ09dimPv0AmWbtETlwsB71JVajVnz9Kz2cO zOhxDGUkhfYzYsZ+nqpMAUKUdOw5Boy2BuaXsydXF2J8HlswlSSURE2by6/si8CdQgylSTlM6u8R+ sFFv9JBFW+cujerdCd6muLqcEgz+QLK91pY9y/YFbmIqMc3f0jXHrN/Or+thWSyWukyUDw/UufL4L 8XJdoMAuuLOiZPjdgsVw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jAsd7-00030X-PC; Sun, 08 Mar 2020 09:53:53 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jAsd0-0002ph-D9 for linux-riscv@lists.infradead.org; Sun, 08 Mar 2020 09:53:47 +0000 Received: from localhost.localdomain (unknown [89.208.247.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 183872146E; Sun, 8 Mar 2020 09:53:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583661226; bh=UyEAFCtYH62bmOtlaU0++uKPtjONoRxQfLj5UKjAlfY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DrRo8Neg/25VQm0tAuBXtvFbqrCIXP+36X19GY2woYBNlWtd8SKh+RWY58zwaVsmr lKo3ooXStjQXfIhMbyg40fsP1pKG8OTWFEArcNsyKCIQ94oxp08JE3kr/bwpMKb6o9 YQhMcOE3DJO4w/EqxKDciBgdlhV0aq94DFUBMcyc= From: guoren@kernel.org To: paul.walmsley@sifive.com, palmer@dabbelt.com, Anup.Patel@wdc.com, greentime.hu@sifive.com Subject: [RFC PATCH V3 10/11] riscv: Add ptrace support Date: Sun, 8 Mar 2020 17:49:53 +0800 Message-Id: <20200308094954.13258-11-guoren@kernel.org> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20200308094954.13258-1-guoren@kernel.org> References: <20200308094954.13258-1-guoren@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200308_015346_493110_83BD03B7 X-CRM114-Status: GOOD ( 10.11 ) X-Spam-Score: -5.2 (-----) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-5.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [198.145.29.99 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arch@vger.kernel.org, Guo Ren , arnd@arndb.de, linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org, linux-riscv@lists.infradead.org, Dave Martin Sender: "linux-riscv" Errors-To: linux-riscv-bounces+patchwork-linux-riscv=patchwork.kernel.org@lists.infradead.org From: Guo Ren Add new regset for vector and the implementation is similar to fpu. Signed-off-by: Guo Ren --- arch/riscv/include/uapi/asm/elf.h | 1 + arch/riscv/kernel/ptrace.c | 41 +++++++++++++++++++++++++++++++ include/uapi/linux/elf.h | 1 + 3 files changed, 43 insertions(+) diff --git a/arch/riscv/include/uapi/asm/elf.h b/arch/riscv/include/uapi/asm/elf.h index d696d6610231..099434d075a7 100644 --- a/arch/riscv/include/uapi/asm/elf.h +++ b/arch/riscv/include/uapi/asm/elf.h @@ -23,6 +23,7 @@ typedef struct user_regs_struct elf_gregset_t; typedef __u64 elf_fpreg_t; typedef union __riscv_fp_state elf_fpregset_t; #define ELF_NFPREG (sizeof(struct __riscv_d_ext_state) / sizeof(elf_fpreg_t)) +#define ELF_NVREG (sizeof(struct __riscv_v_state) / sizeof(elf_greg_t)) #if __riscv_xlen == 64 #define ELF_RISCV_R_SYM(r_info) ELF64_R_SYM(r_info) diff --git a/arch/riscv/kernel/ptrace.c b/arch/riscv/kernel/ptrace.c index 407464201b91..0e3c3543476c 100644 --- a/arch/riscv/kernel/ptrace.c +++ b/arch/riscv/kernel/ptrace.c @@ -26,6 +26,9 @@ enum riscv_regset { #ifdef CONFIG_FPU REGSET_F, #endif +#ifdef CONFIG_VECTOR + REGSET_V, +#endif }; static int riscv_gpr_get(struct task_struct *target, @@ -92,6 +95,34 @@ static int riscv_fpr_set(struct task_struct *target, } #endif +#ifdef CONFIG_VECTOR +static int riscv_vr_get(struct task_struct *target, + const struct user_regset *regset, + unsigned int pos, unsigned int count, + void *kbuf, void __user *ubuf) +{ + int ret; + struct __riscv_v_state *vstate = &target->thread.vstate; + + ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, vstate, 0, + offsetof(struct __riscv_v_state, vtype)); + return ret; +} + +static int riscv_vr_set(struct task_struct *target, + const struct user_regset *regset, + unsigned int pos, unsigned int count, + const void *kbuf, const void __user *ubuf) +{ + int ret; + struct __riscv_v_state *vstate = &target->thread.vstate; + + ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, vstate, 0, + offsetof(struct __riscv_v_state, vtype)); + return ret; +} +#endif + static const struct user_regset riscv_user_regset[] = { [REGSET_X] = { .core_note_type = NT_PRSTATUS, @@ -111,6 +142,16 @@ static const struct user_regset riscv_user_regset[] = { .set = &riscv_fpr_set, }, #endif +#ifdef CONFIG_VECTOR + [REGSET_V] = { + .core_note_type = NT_RISCV_VECTOR, + .n = ELF_NVREG, + .size = sizeof(elf_greg_t), + .align = sizeof(elf_greg_t), + .get = &riscv_vr_get, + .set = &riscv_vr_set, + }, +#endif }; static const struct user_regset_view riscv_user_native_view = { diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h index 34c02e4290fe..e428f9e8710a 100644 --- a/include/uapi/linux/elf.h +++ b/include/uapi/linux/elf.h @@ -428,6 +428,7 @@ typedef struct elf64_shdr { #define NT_MIPS_DSP 0x800 /* MIPS DSP ASE registers */ #define NT_MIPS_FP_MODE 0x801 /* MIPS floating-point mode */ #define NT_MIPS_MSA 0x802 /* MIPS SIMD registers */ +#define NT_RISCV_VECTOR 0x900 /* RISC-V vector registers */ /* Note header in a PT_NOTE section */ typedef struct elf32_note {