c71d227fc4
mangle/demangle on the way to/from userland Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
28 lines
649 B
C
28 lines
649 B
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef __m68k_POLL_H
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#define __m68k_POLL_H
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#ifndef __KERNEL__
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#define POLLWRNORM POLLOUT
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#define POLLWRBAND (__force __poll_t)256
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#else
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#define __ARCH_HAS_MANGLED_POLL
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static inline __u16 mangle_poll(__poll_t val)
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{
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__u16 v = (__force __u16)val;
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/* bit 9 -> bit 8, bit 8 -> bit 2 */
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return (v & ~0x300) | ((v & 0x200) >> 1) | ((v & 0x100) >> 6);
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}
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static inline __poll_t demangle_poll(__u16 v)
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{
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/* bit 8 -> bit 9, bit 2 -> bits 2 and 8 */
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return (__force __poll_t)((v & ~0x100) | ((v & 0x100) << 1) |
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((v & 4) << 6));
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}
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#endif
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#include <asm-generic/poll.h>
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#endif
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