1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * arch/arm/include/asm/flat.h -- uClinux flat-format executables
 4 */
 5
 6#ifndef __ARM_FLAT_H__
 7#define __ARM_FLAT_H__
 8
 9#include <linux/uaccess.h>
10
11#define	flat_argvp_envp_on_stack()		1
12#define	flat_old_ram_flag(flags)		(flags)
13#define	flat_reloc_valid(reloc, size)		((reloc) <= (size))
14
15static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags,
16					u32 *addr, u32 *persistent)
17{
18#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
19	return copy_from_user(addr, rp, 4) ? -EFAULT : 0;
20#else
21	return get_user(*addr, rp);
22#endif
23}
24
25static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel)
26{
27#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
28	return copy_to_user(rp, &addr, 4) ? -EFAULT : 0;
29#else
30	return put_user(addr, rp);
31#endif
32}
33
34#define	flat_get_relocate_addr(rel)		(rel)
35#define	flat_set_persistent(relval, p)		0
36
37#endif /* __ARM_FLAT_H__ */