From patchwork Sat Jan 29 12:17:17 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 12729475 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7CE5AC433F5 for ; Sat, 29 Jan 2022 12:18:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345427AbiA2MS4 (ORCPT ); Sat, 29 Jan 2022 07:18:56 -0500 Received: from ams.source.kernel.org ([145.40.68.75]:47870 "EHLO ams.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344923AbiA2MSa (ORCPT ); Sat, 29 Jan 2022 07:18:30 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id A7CB3B827B2; Sat, 29 Jan 2022 12:18:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 92AA4C340EB; Sat, 29 Jan 2022 12:18:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643458705; bh=G4Z4BRARasIgrFuOvbwy5pdapZpEjfE9N+vqaSNYHgo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=U4QxYcjgrS/TlI5KLCOuy0d/DDY4s1M5bGRwIuAv/fZpLjXRTJUgzPyicftEX3vz0 cZMPDDZ9WCHSz4zxH64+MZ1h1331j9sDwvxxkbcUu5rebcftv3Ad2+5pD3RsPXAdOl hX5OkgY6JfSWvXCDSrd2OVJHsZt73oY0T2G/qBkeubnPZJyHh88RFrFG5mmVzP2j+A 0JwSJ936cOOaNJAmXrBA+8PbOTGvk5W2wDadxt7IN4T7zsJHCJ51trluipSyf5qdXD LCkY/k6kPcQ6LLFHcdjyeaydVQEN/jEi/XN9bBmNl9gvfSlea6df+t84S19kwNBjHK lNyH0FrHUM6VQ== From: guoren@kernel.org To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de, anup@brainfault.org, gregkh@linuxfoundation.org, liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org, wangjunqiang@iscas.ac.cn, hch@lst.de, hch@infradead.org Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-csky@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, Guo Ren Subject: [PATCH V4 06/17] riscv: compat: Add basic compat date type implementation Date: Sat, 29 Jan 2022 20:17:17 +0800 Message-Id: <20220129121728.1079364-7-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220129121728.1079364-1-guoren@kernel.org> References: <20220129121728.1079364-1-guoren@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org From: Guo Ren Implement asm/compat.h for struct compat_xxx, RLIM_INFINITY, OFF_T_MAX, is_compat_task, compat_user_regset, regset convert. Signed-off-by: Guo Ren Signed-off-by: Guo Ren Cc: Arnd Bergmann --- arch/riscv/include/asm/compat.h | 135 +++++++++++++++++++++++++++ arch/riscv/include/asm/thread_info.h | 1 + 2 files changed, 136 insertions(+) create mode 100644 arch/riscv/include/asm/compat.h diff --git a/arch/riscv/include/asm/compat.h b/arch/riscv/include/asm/compat.h new file mode 100644 index 000000000000..3d3e89629e3b --- /dev/null +++ b/arch/riscv/include/asm/compat.h @@ -0,0 +1,135 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +#ifndef __ASM_COMPAT_H +#define __ASM_COMPAT_H + +#define COMPAT_UTS_MACHINE "riscv\0\0" + +#define COMPAT_RLIM_INFINITY 0x7fffffff + +/* + * Architecture specific compatibility types + */ +#include +#include +#include +#include + +#define F_GETLK64 12 +#define F_SETLK64 13 +#define F_SETLKW64 14 + +static inline int is_compat_task(void) +{ + return test_thread_flag(TIF_32BIT); +} + +struct compat_user_regs_struct { + compat_ulong_t pc; + compat_ulong_t ra; + compat_ulong_t sp; + compat_ulong_t gp; + compat_ulong_t tp; + compat_ulong_t t0; + compat_ulong_t t1; + compat_ulong_t t2; + compat_ulong_t s0; + compat_ulong_t s1; + compat_ulong_t a0; + compat_ulong_t a1; + compat_ulong_t a2; + compat_ulong_t a3; + compat_ulong_t a4; + compat_ulong_t a5; + compat_ulong_t a6; + compat_ulong_t a7; + compat_ulong_t s2; + compat_ulong_t s3; + compat_ulong_t s4; + compat_ulong_t s5; + compat_ulong_t s6; + compat_ulong_t s7; + compat_ulong_t s8; + compat_ulong_t s9; + compat_ulong_t s10; + compat_ulong_t s11; + compat_ulong_t t3; + compat_ulong_t t4; + compat_ulong_t t5; + compat_ulong_t t6; +}; + +static inline void regs_to_cregs(struct compat_user_regs_struct *cregs, + struct pt_regs *regs) +{ + cregs->pc = (compat_ulong_t) regs->epc; + cregs->ra = (compat_ulong_t) regs->ra; + cregs->sp = (compat_ulong_t) regs->sp; + cregs->gp = (compat_ulong_t) regs->gp; + cregs->tp = (compat_ulong_t) regs->tp; + cregs->t0 = (compat_ulong_t) regs->t0; + cregs->t1 = (compat_ulong_t) regs->t1; + cregs->t2 = (compat_ulong_t) regs->t2; + cregs->s0 = (compat_ulong_t) regs->s0; + cregs->s1 = (compat_ulong_t) regs->s1; + cregs->a0 = (compat_ulong_t) regs->a0; + cregs->a1 = (compat_ulong_t) regs->a1; + cregs->a2 = (compat_ulong_t) regs->a2; + cregs->a3 = (compat_ulong_t) regs->a3; + cregs->a4 = (compat_ulong_t) regs->a4; + cregs->a5 = (compat_ulong_t) regs->a5; + cregs->a6 = (compat_ulong_t) regs->a6; + cregs->a7 = (compat_ulong_t) regs->a7; + cregs->s2 = (compat_ulong_t) regs->s2; + cregs->s3 = (compat_ulong_t) regs->s3; + cregs->s4 = (compat_ulong_t) regs->s4; + cregs->s5 = (compat_ulong_t) regs->s5; + cregs->s6 = (compat_ulong_t) regs->s6; + cregs->s7 = (compat_ulong_t) regs->s7; + cregs->s8 = (compat_ulong_t) regs->s8; + cregs->s9 = (compat_ulong_t) regs->s9; + cregs->s10 = (compat_ulong_t) regs->s10; + cregs->s11 = (compat_ulong_t) regs->s11; + cregs->t3 = (compat_ulong_t) regs->t3; + cregs->t4 = (compat_ulong_t) regs->t4; + cregs->t5 = (compat_ulong_t) regs->t5; + cregs->t6 = (compat_ulong_t) regs->t6; +}; + +static inline void cregs_to_regs(struct compat_user_regs_struct *cregs, + struct pt_regs *regs) +{ + regs->epc = (unsigned long) cregs->pc; + regs->ra = (unsigned long) cregs->ra; + regs->sp = (unsigned long) cregs->sp; + regs->gp = (unsigned long) cregs->gp; + regs->tp = (unsigned long) cregs->tp; + regs->t0 = (unsigned long) cregs->t0; + regs->t1 = (unsigned long) cregs->t1; + regs->t2 = (unsigned long) cregs->t2; + regs->s0 = (unsigned long) cregs->s0; + regs->s1 = (unsigned long) cregs->s1; + regs->a0 = (unsigned long) cregs->a0; + regs->a1 = (unsigned long) cregs->a1; + regs->a2 = (unsigned long) cregs->a2; + regs->a3 = (unsigned long) cregs->a3; + regs->a4 = (unsigned long) cregs->a4; + regs->a5 = (unsigned long) cregs->a5; + regs->a6 = (unsigned long) cregs->a6; + regs->a7 = (unsigned long) cregs->a7; + regs->s2 = (unsigned long) cregs->s2; + regs->s3 = (unsigned long) cregs->s3; + regs->s4 = (unsigned long) cregs->s4; + regs->s5 = (unsigned long) cregs->s5; + regs->s6 = (unsigned long) cregs->s6; + regs->s7 = (unsigned long) cregs->s7; + regs->s8 = (unsigned long) cregs->s8; + regs->s9 = (unsigned long) cregs->s9; + regs->s10 = (unsigned long) cregs->s10; + regs->s11 = (unsigned long) cregs->s11; + regs->t3 = (unsigned long) cregs->t3; + regs->t4 = (unsigned long) cregs->t4; + regs->t5 = (unsigned long) cregs->t5; + regs->t6 = (unsigned long) cregs->t6; +}; + +#endif /* __ASM_COMPAT_H */ diff --git a/arch/riscv/include/asm/thread_info.h b/arch/riscv/include/asm/thread_info.h index 60da0dcacf14..9392e35c689d 100644 --- a/arch/riscv/include/asm/thread_info.h +++ b/arch/riscv/include/asm/thread_info.h @@ -91,6 +91,7 @@ struct thread_info { #define TIF_SECCOMP 8 /* syscall secure computing */ #define TIF_NOTIFY_SIGNAL 9 /* signal notifications exist */ #define TIF_UPROBE 10 /* uprobe breakpoint or singlestep */ +#define TIF_32BIT 11 /* 32bit process */ #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)