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=-8.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,UNPARSEABLE_RELAY, 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 427DFC04EB9 for ; Tue, 16 Oct 2018 03:02:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0AF792089E for ; Tue, 16 Oct 2018 03:02:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0AF792089E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=c-sky.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727188AbeJPKuG (ORCPT ); Tue, 16 Oct 2018 06:50:06 -0400 Received: from smtp2200-217.mail.aliyun.com ([121.197.200.217]:42969 "EHLO smtp2200-217.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726928AbeJPKuF (ORCPT ); Tue, 16 Oct 2018 06:50:05 -0400 X-Alimail-AntiSpam: AC=CONTINUE;BC=0.07437211|-1;CH=green;FP=0|0|0|0|0|-1|-1|-1;HT=e02c03289;MF=ren_guo@c-sky.com;NM=1;PH=DS;RN=17;RT=17;SR=0;TI=SMTPD_---.D2esSKM_1539658880; Received: from localhost(mailfrom:ren_guo@c-sky.com fp:SMTPD_---.D2esSKM_1539658880) by smtp.aliyun-inc.com(10.147.42.16); Tue, 16 Oct 2018 11:01:20 +0800 From: Guo Ren To: akpm@linux-foundation.org, arnd@arndb.de, daniel.lezcano@linaro.org, davem@davemloft.net, gregkh@linuxfoundation.org, hch@infradead.org, marc.zyngier@arm.com, mark.rutland@arm.com, peterz@infradead.org, robh@kernel.org, tglx@linutronix.de Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, devicetree@vger.kernel.org, robh+dt@kernel.org, c-sky_gcc_upstream@c-sky.com, Guo Ren Subject: [PATCH V9 05/21] csky: System Call Date: Tue, 16 Oct 2018 10:58:24 +0800 Message-Id: X-Mailer: git-send-email 2.7.4 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds files related to syscall. Signed-off-by: Guo Ren Cc: Arnd Bergmann --- arch/csky/include/asm/syscall.h | 71 +++++++++++++++++++++++++++++++++++++ arch/csky/include/asm/syscalls.h | 15 ++++++++ arch/csky/include/uapi/asm/unistd.h | 10 ++++++ arch/csky/kernel/syscall.c | 43 ++++++++++++++++++++++ arch/csky/kernel/syscall_table.c | 14 ++++++++ 5 files changed, 153 insertions(+) create mode 100644 arch/csky/include/asm/syscall.h create mode 100644 arch/csky/include/asm/syscalls.h create mode 100644 arch/csky/include/uapi/asm/unistd.h create mode 100644 arch/csky/kernel/syscall.c create mode 100644 arch/csky/kernel/syscall_table.c diff --git a/arch/csky/include/asm/syscall.h b/arch/csky/include/asm/syscall.h new file mode 100644 index 0000000..926a64a --- /dev/null +++ b/arch/csky/include/asm/syscall.h @@ -0,0 +1,71 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ASM_SYSCALL_H +#define __ASM_SYSCALL_H + +#include +#include +#include + +static inline int +syscall_get_nr(struct task_struct *task, struct pt_regs *regs) +{ + return regs_syscallid(regs); +} + +static inline void +syscall_rollback(struct task_struct *task, struct pt_regs *regs) +{ + regs->a0 = regs->orig_a0; +} + +static inline long +syscall_get_error(struct task_struct *task, struct pt_regs *regs) +{ + unsigned long error = regs->a0; + + return IS_ERR_VALUE(error) ? error : 0; +} + +static inline long +syscall_get_return_value(struct task_struct *task, struct pt_regs *regs) +{ + return regs->a0; +} + +static inline void +syscall_set_return_value(struct task_struct *task, struct pt_regs *regs, + int error, long val) +{ + regs->a0 = (long) error ?: val; +} + +static inline void +syscall_get_arguments(struct task_struct *task, struct pt_regs *regs, + unsigned int i, unsigned int n, unsigned long *args) +{ + BUG_ON(i + n > 6); + if (i == 0) { + args[0] = regs->orig_a0; + args++; + i++; + n--; + } + memcpy(args, ®s->a1 + i * sizeof(regs->a1), n * sizeof(args[0])); +} + +static inline void +syscall_set_arguments(struct task_struct *task, struct pt_regs *regs, + unsigned int i, unsigned int n, const unsigned long *args) +{ + BUG_ON(i + n > 6); + if (i == 0) { + regs->orig_a0 = args[0]; + args++; + i++; + n--; + } + memcpy(®s->a1 + i * sizeof(regs->a1), args, n * sizeof(regs->a0)); +} + +#endif /* __ASM_SYSCALL_H */ diff --git a/arch/csky/include/asm/syscalls.h b/arch/csky/include/asm/syscalls.h new file mode 100644 index 0000000..5d48e5e --- /dev/null +++ b/arch/csky/include/asm/syscalls.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. + +#ifndef __ASM_CSKY_SYSCALLS_H +#define __ASM_CSKY_SYSCALLS_H + +#include + +long sys_cacheflush(void __user *, unsigned long, int); + +long sys_set_thread_area(unsigned long addr); + +long sys_csky_fadvise64_64(int fd, int advice, loff_t offset, loff_t len); + +#endif /* __ASM_CSKY_SYSCALLS_H */ diff --git a/arch/csky/include/uapi/asm/unistd.h b/arch/csky/include/uapi/asm/unistd.h new file mode 100644 index 0000000..16ed71e --- /dev/null +++ b/arch/csky/include/uapi/asm/unistd.h @@ -0,0 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. + +#define __ARCH_WANT_SYS_CLONE +#include + +#define __NR_set_thread_area (__NR_arch_specific_syscall + 0) +__SYSCALL(__NR_set_thread_area, sys_set_thread_area) +#define __NR_cacheflush (__NR_arch_specific_syscall + 4) +__SYSCALL(__NR_cacheflush, sys_cacheflush) diff --git a/arch/csky/kernel/syscall.c b/arch/csky/kernel/syscall.c new file mode 100644 index 0000000..3d30e58 --- /dev/null +++ b/arch/csky/kernel/syscall.c @@ -0,0 +1,43 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. + +#include + +SYSCALL_DEFINE1(set_thread_area, unsigned long, addr) +{ + struct thread_info *ti = task_thread_info(current); + struct pt_regs *reg = current_pt_regs(); + + reg->tls = addr; + ti->tp_value = addr; + + return 0; +} + +SYSCALL_DEFINE6(mmap2, + unsigned long, addr, + unsigned long, len, + unsigned long, prot, + unsigned long, flags, + unsigned long, fd, + off_t, offset) +{ + if (unlikely(offset & (~PAGE_MASK >> 12))) + return -EINVAL; + + return ksys_mmap_pgoff(addr, len, prot, flags, fd, + offset >> (PAGE_SHIFT - 12)); +} + +/* + * for abiv1 the 64bits args should be even th, So we need mov the advice + * forward. + */ +SYSCALL_DEFINE4(csky_fadvise64_64, + int, fd, + int, advice, + loff_t, offset, + loff_t, len) +{ + return ksys_fadvise64_64(fd, offset, len, advice); +} diff --git a/arch/csky/kernel/syscall_table.c b/arch/csky/kernel/syscall_table.c new file mode 100644 index 0000000..a0c238c --- /dev/null +++ b/arch/csky/kernel/syscall_table.c @@ -0,0 +1,14 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. + +#include +#include + +#undef __SYSCALL +#define __SYSCALL(nr, call)[nr] = (call), + +#define sys_fadvise64_64 sys_csky_fadvise64_64 +void * const sys_call_table[__NR_syscalls] __page_aligned_data = { + [0 ... __NR_syscalls - 1] = sys_ni_syscall, +#include +}; -- 2.7.4