linux_kernel/arch/m68k/include/asm/flat.h

/*
 * flat.h -- uClinux flat-format executables
 */

#ifndef __M68KNOMMU_FLAT_H__
#define __M68KNOMMU_FLAT_H__

#include <linux/uaccess.h>

#define	flat_argvp_envp_on_stack()		1
#define	flat_old_ram_flag(flags)		(flags)
#define	flat_reloc_valid(reloc, size)		((reloc) <= (size))
static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags,
					u32 *addr, u32 *persistent)
{
#ifdef CONFIG_CPU_HAS_NO_UNALIGNED
	return copy_from_user(addr, rp, 4) ? -EFAULT : 0;
#else
	return get_user(*addr, rp);
#endif
}

static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel)
{
#ifdef CONFIG_CPU_HAS_NO_UNALIGNED
	return copy_to_user(rp, &addr, 4) ? -EFAULT : 0;
#else
	return put_user(addr, rp);
#endif
}
#define	flat_get_relocate_addr(rel)		(rel)

static inline int flat_set_persistent(u32 relval, u32 *persistent)
{
	return 0;
}

#define FLAT_PLAT_INIT(regs) \
	do { \
		if (current->mm) \
			(regs)->d5 = current->mm->start_data; \
	} while (0)

#endif /* __M68KNOMMU_FLAT_H__ */