1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef _ASM_GENERIC_FLAT_H
3*4882a593Smuzhiyun #define _ASM_GENERIC_FLAT_H
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun #include <linux/uaccess.h>
6*4882a593Smuzhiyun
flat_get_addr_from_rp(u32 __user * rp,u32 relval,u32 flags,u32 * addr)7*4882a593Smuzhiyun static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags,
8*4882a593Smuzhiyun u32 *addr)
9*4882a593Smuzhiyun {
10*4882a593Smuzhiyun #ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
11*4882a593Smuzhiyun return copy_from_user(addr, rp, 4) ? -EFAULT : 0;
12*4882a593Smuzhiyun #else
13*4882a593Smuzhiyun return get_user(*addr, rp);
14*4882a593Smuzhiyun #endif
15*4882a593Smuzhiyun }
16*4882a593Smuzhiyun
flat_put_addr_at_rp(u32 __user * rp,u32 addr,u32 rel)17*4882a593Smuzhiyun static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel)
18*4882a593Smuzhiyun {
19*4882a593Smuzhiyun #ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
20*4882a593Smuzhiyun return copy_to_user(rp, &addr, 4) ? -EFAULT : 0;
21*4882a593Smuzhiyun #else
22*4882a593Smuzhiyun return put_user(addr, rp);
23*4882a593Smuzhiyun #endif
24*4882a593Smuzhiyun }
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun #endif /* _ASM_GENERIC_FLAT_H */
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