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 (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
^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_ARC_SYSCALL_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #define _ASM_ARC_SYSCALL_H  1
^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) #include <asm/unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <asm/ptrace.h>		/* in_syscall() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) static inline long
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	if (user_mode(regs) && in_syscall(regs))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 		return regs->r8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) syscall_rollback(struct task_struct *task, struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	regs->r0 = regs->orig_r0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) static inline long
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) syscall_get_error(struct task_struct *task, struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	/* 0 if syscall succeeded, otherwise -Errorcode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	return IS_ERR_VALUE(regs->r0) ? regs->r0 : 0;
^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 long
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) syscall_get_return_value(struct task_struct *task, struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	return regs->r0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) syscall_set_return_value(struct task_struct *task, struct pt_regs *regs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 			 int error, long val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	regs->r0 = (long) error ?: val;
^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) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)  * @i:      argument index [0,5]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)  * @n:      number of arguments; n+i must be [1,6].
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) syscall_get_arguments(struct task_struct *task, struct pt_regs *regs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 		      unsigned long *args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	unsigned long *inside_ptregs = &(regs->r0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	unsigned int n = 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	unsigned int i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	while (n--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 		args[i++] = (*inside_ptregs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 		inside_ptregs--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static inline int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) syscall_get_arch(struct task_struct *task)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	return IS_ENABLED(CONFIG_ISA_ARCOMPACT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 		? (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 			? AUDIT_ARCH_ARCOMPACTBE : AUDIT_ARCH_ARCOMPACT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 		: (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 			? AUDIT_ARCH_ARCV2BE : AUDIT_ARCH_ARCV2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #endif