32d9258662
After removing the start and count arguments of syscall_get_arguments() it seems reasonable to remove them from syscall_set_arguments(). Note, as of today, there are no users of syscall_set_arguments(). But we are told that there will be soon. But for now, at least make it consistent with syscall_get_arguments(). Link: http://lkml.kernel.org/r/20190327222014.GA32540@altlinux.org Cc: Oleg Nesterov <oleg@redhat.com> Cc: Kees Cook <keescook@chromium.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Dave Martin <dave.martin@arm.com> Cc: "Dmitry V. Levin" <ldv@altlinux.org> Cc: x86@kernel.org Cc: linux-snps-arc@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-c6x-dev@linux-c6x.org Cc: uclinux-h8-devel@lists.sourceforge.jp Cc: linux-hexagon@vger.kernel.org Cc: linux-ia64@vger.kernel.org Cc: linux-mips@vger.kernel.org Cc: nios2-dev@lists.rocketboards.org Cc: openrisc@lists.librecores.org Cc: linux-parisc@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-riscv@lists.infradead.org Cc: linux-s390@vger.kernel.org Cc: linux-sh@vger.kernel.org Cc: sparclinux@vger.kernel.org Cc: linux-um@lists.infradead.org Cc: linux-xtensa@linux-xtensa.org Cc: linux-arch@vger.kernel.org Acked-by: Max Filippov <jcmvbkbc@gmail.com> # For xtensa changes Acked-by: Will Deacon <will.deacon@arm.com> # For the arm64 bits Reviewed-by: Thomas Gleixner <tglx@linutronix.de> # for x86 Reviewed-by: Dmitry V. Levin <ldv@altlinux.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
83 lines
2.0 KiB
C
83 lines
2.0 KiB
C
/*
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* Copyright Altera Corporation (C) <2014>. All rights reserved
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ASM_NIOS2_SYSCALL_H__
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#define __ASM_NIOS2_SYSCALL_H__
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#include <linux/err.h>
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#include <linux/sched.h>
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static inline int syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
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{
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return regs->r2;
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}
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static inline void syscall_rollback(struct task_struct *task,
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struct pt_regs *regs)
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{
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regs->r2 = regs->orig_r2;
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regs->r7 = regs->orig_r7;
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}
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static inline long syscall_get_error(struct task_struct *task,
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struct pt_regs *regs)
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{
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return regs->r7 ? regs->r2 : 0;
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}
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static inline long syscall_get_return_value(struct task_struct *task,
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struct pt_regs *regs)
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{
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return regs->r2;
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}
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static inline void syscall_set_return_value(struct task_struct *task,
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struct pt_regs *regs, int error, long val)
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{
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if (error) {
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/* error < 0, but nios2 uses > 0 return value */
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regs->r2 = -error;
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regs->r7 = 1;
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} else {
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regs->r2 = val;
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regs->r7 = 0;
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}
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}
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static inline void syscall_get_arguments(struct task_struct *task,
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struct pt_regs *regs, unsigned long *args)
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{
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*args++ = regs->r4;
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*args++ = regs->r5;
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*args++ = regs->r6;
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*args++ = regs->r7;
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*args++ = regs->r8;
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*args = regs->r9;
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}
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static inline void syscall_set_arguments(struct task_struct *task,
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struct pt_regs *regs, const unsigned long *args)
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{
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regs->r4 = *args++;
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regs->r5 = *args++;
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regs->r6 = *args++;
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regs->r7 = *args++;
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regs->r8 = *args++;
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regs->r9 = *args;
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}
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#endif
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