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/* SPDX-License-Identifier: GPL-2.0 */
/*
* arch/h8300/asm/include/flat.h -- uClinux flat-format executables
*/
#ifndef __H8300_FLAT_H__
#define __H8300_FLAT_H__
#include <asm/unaligned.h>
/*
* on the H8 a couple of the relocations have an instruction in the
* top byte. As there can only be 24bits of address space, we just
* always preserve that 8bits at the top, when it isn't an instruction
* is is 0 (davidm@snapgear.com)
*/
#define flat_get_relocate_addr(rel) (rel & ~0x00000001)
static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags,
u32 *addr, u32 *persistent)
{
u32 val = get_unaligned((__force u32 *)rp);
if (!(flags & FLAT_FLAG_GOTPIC))
val &= 0x00ffffff;
*addr = val;
return 0;
}
static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel)
{
u32 *p = (__force u32 *)rp;
put_unaligned((addr & 0x00ffffff) | (*(char *)p << 24), p);
return 0;
}
#endif /* __H8300_FLAT_H__ */
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