b497ef570e
xtensa, uses a nonstandard variation of the generic sysvipc data structures, intended to have the padding moved around so it can deal with big-endian 32-bit user space that has 64-bit time_t. xtensa tries hard to define the structures so they work in both big-endian and little-endian systems with padding on the right side. However, they only succeeded for for two of the three structures, and their struct shmid64_ds ended up being defined in two identical copies, and the big-endian one is wrong. This takes just take the same approach here that we have for the asm-generic headers and adds separate 32-bit fields for the upper halves of the timestamps, to let libc deal with the mess in user space. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* include/asm-xtensa/sembuf.h
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*
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* The semid64_ds structure for Xtensa architecture.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2001 - 2005 Tensilica Inc.
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*
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* Note extra padding because this structure is passed back and forth
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* between kernel and user space.
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*
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* Pad space is left for:
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* - 2 miscellaneous 32-bit values
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*
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*/
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#ifndef _XTENSA_SEMBUF_H
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#define _XTENSA_SEMBUF_H
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#include <asm/byteorder.h>
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struct semid64_ds {
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struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
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#ifdef __XTENSA_EL__
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unsigned long sem_otime; /* last semop time */
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unsigned long sem_otime_high;
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unsigned long sem_ctime; /* last change time */
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unsigned long sem_ctime_high;
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#else
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unsigned long sem_otime_high;
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unsigned long sem_otime; /* last semop time */
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unsigned long sem_ctime_high;
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unsigned long sem_ctime; /* last change time */
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#endif
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unsigned long sem_nsems; /* no. of semaphores in array */
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unsigned long __unused3;
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unsigned long __unused4;
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};
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#endif /* __ASM_XTENSA_SEMBUF_H */
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