1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * OpenRISC Linux 4 * 5 * Linux architectural port borrowing liberally from similar works of 6 * others. All original copyrights apply as per the original source 7 * declaration. 8 * 9 * OpenRISC implementation: 10 * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com> 11 * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> 12 * et al. 13 */ 14 15 #ifndef __ASM_OPENRISC_SYSCALL_H__ 16 #define __ASM_OPENRISC_SYSCALL_H__ 17 18 #include <uapi/linux/audit.h> 19 #include <linux/err.h> 20 #include <linux/sched.h> 21 22 static inline int 23 syscall_get_nr(struct task_struct *task, struct pt_regs *regs) 24 { 25 return regs->orig_gpr11; 26 } 27 28 static inline void 29 syscall_rollback(struct task_struct *task, struct pt_regs *regs) 30 { 31 regs->gpr[11] = regs->orig_gpr11; 32 } 33 34 static inline long 35 syscall_get_error(struct task_struct *task, struct pt_regs *regs) 36 { 37 return IS_ERR_VALUE(regs->gpr[11]) ? regs->gpr[11] : 0; 38 } 39 40 static inline long 41 syscall_get_return_value(struct task_struct *task, struct pt_regs *regs) 42 { 43 return regs->gpr[11]; 44 } 45 46 static inline void 47 syscall_set_return_value(struct task_struct *task, struct pt_regs *regs, 48 int error, long val) 49 { 50 regs->gpr[11] = (long) error ?: val; 51 } 52 53 static inline void 54 syscall_get_arguments(struct task_struct *task, struct pt_regs *regs, 55 unsigned long *args) 56 { 57 memcpy(args, ®s->gpr[3], 6 * sizeof(args[0])); 58 } 59 60 static inline void 61 syscall_set_arguments(struct task_struct *task, struct pt_regs *regs, 62 const unsigned long *args) 63 { 64 memcpy(®s->gpr[3], args, 6 * sizeof(args[0])); 65 } 66 67 static inline int syscall_get_arch(struct task_struct *task) 68 { 69 return AUDIT_ARCH_OPENRISC; 70 } 71 #endif 72