1/* 2 * OpenRISC Linux 3 * 4 * Linux architectural port borrowing liberally from similar works of 5 * others. All original copyrights apply as per the original source 6 * declaration. 7 * 8 * OpenRISC implementation: 9 * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com> 10 * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> 11 * et al. 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of the GNU General Public License as published by 15 * the Free Software Foundation; either version 2 of the License, or 16 * (at your option) any later version. 17 */ 18 19#ifndef __ASM_OPENRISC_SYSCALL_H__ 20#define __ASM_OPENRISC_SYSCALL_H__ 21 22#include <uapi/linux/audit.h> 23#include <linux/err.h> 24#include <linux/sched.h> 25 26static inline int 27syscall_get_nr(struct task_struct *task, struct pt_regs *regs) 28{ 29 return regs->orig_gpr11; 30} 31 32static inline void 33syscall_rollback(struct task_struct *task, struct pt_regs *regs) 34{ 35 regs->gpr[11] = regs->orig_gpr11; 36} 37 38static inline long 39syscall_get_error(struct task_struct *task, struct pt_regs *regs) 40{ 41 return IS_ERR_VALUE(regs->gpr[11]) ? regs->gpr[11] : 0; 42} 43 44static inline long 45syscall_get_return_value(struct task_struct *task, struct pt_regs *regs) 46{ 47 return regs->gpr[11]; 48} 49 50static inline void 51syscall_set_return_value(struct task_struct *task, struct pt_regs *regs, 52 int error, long val) 53{ 54 regs->gpr[11] = (long) error ?: val; 55} 56 57static inline void 58syscall_get_arguments(struct task_struct *task, struct pt_regs *regs, 59 unsigned int i, unsigned int n, unsigned long *args) 60{ 61 BUG_ON(i + n > 6); 62 63 memcpy(args, ®s->gpr[3 + i], n * sizeof(args[0])); 64} 65 66static inline void 67syscall_set_arguments(struct task_struct *task, struct pt_regs *regs, 68 unsigned int i, unsigned int n, const unsigned long *args) 69{ 70 BUG_ON(i + n > 6); 71 72 memcpy(®s->gpr[3 + i], args, n * sizeof(args[0])); 73} 74 75static inline int syscall_get_arch(void) 76{ 77 return AUDIT_ARCH_OPENRISC; 78} 79#endif 80