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() */
15 extern void *sys_call_table[];
18 syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
20 if (user_mode(regs) && in_syscall(regs))
27 syscall_rollback(struct task_struct *task, struct pt_regs *regs)
29 regs->r0 = regs->orig_r0;
33 syscall_get_error(struct task_struct *task, struct pt_regs *regs)
35 /* 0 if syscall succeeded, otherwise -Errorcode */
36 return IS_ERR_VALUE(regs->r0) ? regs->r0 : 0;
40 syscall_get_return_value(struct task_struct *task, struct pt_regs *regs)
46 syscall_set_return_value(struct task_struct *task, struct pt_regs *regs,
49 regs->r0 = (long) error ?: val;
53 * @i: argument index [0,5]
54 * @n: number of arguments; n+i must be [1,6].
57 syscall_get_arguments(struct task_struct *task, struct pt_regs *regs,
60 unsigned long *inside_ptregs = &(regs->r0);
65 args[i++] = (*inside_ptregs);
71 syscall_get_arch(struct task_struct *task)
73 return IS_ENABLED(CONFIG_ISA_ARCOMPACT)
74 ? (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)
75 ? AUDIT_ARCH_ARCOMPACTBE : AUDIT_ARCH_ARCOMPACT)
76 : (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)
77 ? AUDIT_ARCH_ARCV2BE : AUDIT_ARCH_ARCV2);