Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright Altera Corporation (C) <2014>. All rights reserved
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #ifndef __ASM_NIOS2_SYSCALL_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #define __ASM_NIOS2_SYSCALL_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <uapi/linux/audit.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) static inline int syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	return regs->r2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) static inline void syscall_rollback(struct task_struct *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 				struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	regs->r2 = regs->orig_r2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	regs->r7 = regs->orig_r7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static inline long syscall_get_error(struct task_struct *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 				struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	return regs->r7 ? regs->r2 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) static inline long syscall_get_return_value(struct task_struct *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	return regs->r2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) static inline void syscall_set_return_value(struct task_struct *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	struct pt_regs *regs, int error, long val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 		/* error < 0, but nios2 uses > 0 return value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 		regs->r2 = -error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 		regs->r7 = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 		regs->r2 = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 		regs->r7 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) static inline void syscall_get_arguments(struct task_struct *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	struct pt_regs *regs, unsigned long *args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	*args++ = regs->r4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	*args++ = regs->r5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	*args++ = regs->r6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	*args++ = regs->r7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	*args++ = regs->r8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	*args   = regs->r9;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) static inline void syscall_set_arguments(struct task_struct *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	struct pt_regs *regs, const unsigned long *args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	regs->r4 = *args++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	regs->r5 = *args++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	regs->r6 = *args++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 	regs->r7 = *args++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 	regs->r8 = *args++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 	regs->r9 = *args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static inline int syscall_get_arch(struct task_struct *task)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 	return AUDIT_ARCH_NIOS2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #endif