1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * arch/h8300/asm/include/flat.h -- uClinux flat-format executables 4 */ 5 6#ifndef __H8300_FLAT_H__ 7#define __H8300_FLAT_H__ 8 9#include <asm/unaligned.h> 10 11/* 12 * on the H8 a couple of the relocations have an instruction in the 13 * top byte. As there can only be 24bits of address space, we just 14 * always preserve that 8bits at the top, when it isn't an instruction 15 * is is 0 (davidm@snapgear.com) 16 */ 17 18#define flat_get_relocate_addr(rel) (rel & ~0x00000001) 19static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags, 20 u32 *addr) 21{ 22 u32 val = get_unaligned((__force u32 *)rp); 23 if (!(flags & FLAT_FLAG_GOTPIC)) 24 val &= 0x00ffffff; 25 *addr = val; 26 return 0; 27} 28 29static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel) 30{ 31 u32 *p = (__force u32 *)rp; 32 put_unaligned((addr & 0x00ffffff) | (*(char *)p << 24), p); 33 return 0; 34} 35 36#endif /* __H8300_FLAT_H__ */ 37