1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
6 #ifndef _ASM_ARC_SYSCALL_H
7 #define _ASM_ARC_SYSCALL_H 1
9 #include <uapi/linux/audit.h>
10 #include <linux/err.h>
11 #include <linux/sched.h>
12 #include <asm/unistd.h>
13 #include <asm/ptrace.h> /* in_syscall() */
16 syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
18 if (user_mode(regs) && in_syscall(regs))
25 syscall_rollback(struct task_struct *task, struct pt_regs *regs)
27 regs->r0 = regs->orig_r0;
31 syscall_get_error(struct task_struct *task, struct pt_regs *regs)
33 /* 0 if syscall succeeded, otherwise -Errorcode */
34 return IS_ERR_VALUE(regs->r0) ? regs->r0 : 0;
38 syscall_get_return_value(struct task_struct *task, struct pt_regs *regs)
44 syscall_set_return_value(struct task_struct *task, struct pt_regs *regs,
47 regs->r0 = (long) error ?: val;
51 * @i: argument index [0,5]
52 * @n: number of arguments; n+i must be [1,6].
55 syscall_get_arguments(struct task_struct *task, struct pt_regs *regs,
58 unsigned long *inside_ptregs = &(regs->r0);
63 args[i++] = (*inside_ptregs);
69 syscall_get_arch(struct task_struct *task)
71 return IS_ENABLED(CONFIG_ISA_ARCOMPACT)
72 ? (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)
73 ? AUDIT_ARCH_ARCOMPACTBE : AUDIT_ARCH_ARCOMPACT)
74 : (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)
75 ? AUDIT_ARCH_ARCV2BE : AUDIT_ARCH_ARCV2);