forked from Minki/linux
7a8998c9d8
This file implements the flat get/put reloc helpers for architectures
that do not need to overload the relocs by simply using get_user/put_user.
Note that many nommu architectures currently use {get,put}_unaligned, which
looks a little bogus and should probably later be switched over to this
version as well.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
27 lines
627 B
C
27 lines
627 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_GENERIC_FLAT_H
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#define _ASM_GENERIC_FLAT_H
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#include <linux/uaccess.h>
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static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags,
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u32 *addr, u32 *persistent)
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{
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#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
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return copy_from_user(addr, rp, 4) ? -EFAULT : 0;
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#else
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return get_user(*addr, rp);
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#endif
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}
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static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel)
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{
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#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
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return copy_to_user(rp, &addr, 4) ? -EFAULT : 0;
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#else
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return put_user(addr, rp);
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#endif
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}
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#endif /* _ASM_GENERIC_FLAT_H */
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