1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 #ifndef _UAPI_XTENSA_UNISTD_H 3 #define _UAPI_XTENSA_UNISTD_H 4 5 #include <asm/unistd_32.h> 6 7 #define __ARCH_WANT_SYS_OLDUMOUNT 8 9 /* 10 * sysxtensa syscall handler 11 * 12 * int sysxtensa (SYS_XTENSA_ATOMIC_SET, ptr, val, unused); 13 * int sysxtensa (SYS_XTENSA_ATOMIC_ADD, ptr, val, unused); 14 * int sysxtensa (SYS_XTENSA_ATOMIC_EXG_ADD, ptr, val, unused); 15 * int sysxtensa (SYS_XTENSA_ATOMIC_CMP_SWP, ptr, oldval, newval); 16 * a2 a6 a3 a4 a5 17 */ 18 19 #define SYS_XTENSA_RESERVED 0 /* don't use this */ 20 #define SYS_XTENSA_ATOMIC_SET 1 /* set variable */ 21 #define SYS_XTENSA_ATOMIC_EXG_ADD 2 /* exchange memory and add */ 22 #define SYS_XTENSA_ATOMIC_ADD 3 /* add to memory */ 23 #define SYS_XTENSA_ATOMIC_CMP_SWP 4 /* compare and swap */ 24 #define SYS_XTENSA_COUNT 5 /* count */ 25 26 #endif /* _UAPI_XTENSA_UNISTD_H */ 27