[mirror_ubuntu-focal-kernel.git] / arch / h8300 / include / asm / uaccess.h

#ifndef _ASM_UACCESS_H
#define _ASM_UACCESS_H

#include <linux/string.h>

static inline __must_check unsigned long
raw_copy_from_user(void *to, const void __user * from, unsigned long n)
{
	if (__builtin_constant_p(n)) {
		switch(n) {
		case 1:
			*(u8 *)to = *(u8 __force *)from;
			return 0;
		case 2:
			*(u16 *)to = *(u16 __force *)from;
			return 0;
		case 4:
			*(u32 *)to = *(u32 __force *)from;
			return 0;
		}
	}

	memcpy(to, (const void __force *)from, n);
	return 0;
}

static inline __must_check unsigned long
raw_copy_to_user(void __user *to, const void *from, unsigned long n)
{
	if (__builtin_constant_p(n)) {
		switch(n) {
		case 1:
			*(u8 __force *)to = *(u8 *)from;
			return 0;
		case 2:
			*(u16 __force *)to = *(u16 *)from;
			return 0;
		case 4:
			*(u32 __force *)to = *(u32 *)from;
			return 0;
		default:
			break;
		}
	}

	memcpy((void __force *)to, from, n);
	return 0;
}
#define INLINE_COPY_FROM_USER
#define INLINE_COPY_TO_USER

#include <asm-generic/uaccess.h>

#endif
Commit	Line	Data
3fb50075 AV	1	#ifndef _ASM_UACCESS_H
	2	#define _ASM_UACCESS_H
	3
	4	#include <linux/string.h>
	5
33ab2da8 AV	6	static inline __must_check unsigned long
33ab2da8 AV	7	raw_copy_from_user(void to, const void __user from, unsigned long n)
3fb50075 AV	8	{
	9	if (__builtin_constant_p(n)) {
	10	switch(n) {
	11	case 1:
	12	(u8 )to = (u8 __force )from;
	13	return 0;
	14	case 2:
	15	(u16 )to = (u16 __force )from;
	16	return 0;
	17	case 4:
	18	(u32 )to = (u32 __force )from;
	19	return 0;
	20	}
	21	}
	22
	23	memcpy(to, (const void __force *)from, n);
	24	return 0;
	25	}
	26
33ab2da8 AV	27	static inline __must_check unsigned long
33ab2da8 AV	28	raw_copy_to_user(void __user to, const void from, unsigned long n)
3fb50075 AV	29	{
	30	if (__builtin_constant_p(n)) {
	31	switch(n) {
	32	case 1:
	33	(u8 __force )to = (u8 )from;
	34	return 0;
	35	case 2:
	36	(u16 __force )to = (u16 )from;
	37	return 0;
	38	case 4:
	39	(u32 __force )to = (u32 )from;
	40	return 0;
	41	default:
	42	break;
	43	}
	44	}
	45
	46	memcpy((void __force *)to, from, n);
	47	return 0;
	48	}
33ab2da8 AV	49	#define INLINE_COPY_FROM_USER
33ab2da8 AV	50	#define INLINE_COPY_TO_USER
3fb50075 AV	51
	52	#include <asm-generic/uaccess.h>
	53
	54	#endif