27 lines
1006 B
C
27 lines
1006 B
C
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _UAPI_XTENSA_UNISTD_H
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#define _UAPI_XTENSA_UNISTD_H
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#include <asm/unistd_32.h>
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#define __ARCH_WANT_SYS_OLDUMOUNT
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/*
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* sysxtensa syscall handler
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*
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* int sysxtensa (SYS_XTENSA_ATOMIC_SET, ptr, val, unused);
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* int sysxtensa (SYS_XTENSA_ATOMIC_ADD, ptr, val, unused);
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* int sysxtensa (SYS_XTENSA_ATOMIC_EXG_ADD, ptr, val, unused);
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* int sysxtensa (SYS_XTENSA_ATOMIC_CMP_SWP, ptr, oldval, newval);
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* a2 a6 a3 a4 a5
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*/
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#define SYS_XTENSA_RESERVED 0 /* don't use this */
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#define SYS_XTENSA_ATOMIC_SET 1 /* set variable */
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#define SYS_XTENSA_ATOMIC_EXG_ADD 2 /* exchange memory and add */
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#define SYS_XTENSA_ATOMIC_ADD 3 /* add to memory */
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#define SYS_XTENSA_ATOMIC_CMP_SWP 4 /* compare and swap */
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#define SYS_XTENSA_COUNT 5 /* count */
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#endif /* _UAPI_XTENSA_UNISTD_H */
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