mirror of https://gitee.com/openkylin/linux.git
37 lines
935 B
C
37 lines
935 B
C
/* 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 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__ */
|