diff options
Diffstat (limited to 'arch/xtensa/include/uapi/asm/unistd.h')
| -rw-r--r-- | arch/xtensa/include/uapi/asm/unistd.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/xtensa/include/uapi/asm/unistd.h b/arch/xtensa/include/uapi/asm/unistd.h new file mode 100644 index 000000000..e67ccdd11 --- /dev/null +++ b/arch/xtensa/include/uapi/asm/unistd.h @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +#ifndef _UAPI_XTENSA_UNISTD_H +#define _UAPI_XTENSA_UNISTD_H + +#include <asm/unistd_32.h> + +#define __ARCH_WANT_SYS_OLDUMOUNT + +/* + * sysxtensa syscall handler + * + * int sysxtensa (SYS_XTENSA_ATOMIC_SET, ptr, val, unused); + * int sysxtensa (SYS_XTENSA_ATOMIC_ADD, ptr, val, unused); + * int sysxtensa (SYS_XTENSA_ATOMIC_EXG_ADD, ptr, val, unused); + * int sysxtensa (SYS_XTENSA_ATOMIC_CMP_SWP, ptr, oldval, newval); + * a2 a6 a3 a4 a5 + */ + +#define SYS_XTENSA_RESERVED 0 /* don't use this */ +#define SYS_XTENSA_ATOMIC_SET 1 /* set variable */ +#define SYS_XTENSA_ATOMIC_EXG_ADD 2 /* exchange memory and add */ +#define SYS_XTENSA_ATOMIC_ADD 3 /* add to memory */ +#define SYS_XTENSA_ATOMIC_CMP_SWP 4 /* compare and swap */ +#define SYS_XTENSA_COUNT 5 /* count */ + +#endif /* _UAPI_XTENSA_UNISTD_H */ |