include/asm/futex.h

1 /* SPDX-License-Identifier: GPL-2.0 */
3  * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
10 #include <asm/asm-extable.h>
17 	"1:	ll.w	%1, %4 # __futex_atomic_op\n"		\
20 	"	beqz	$t0, 1b				\n"	\
22 	_ASM_EXTABLE_UACCESS_ERR(1b, 3b, %0)			\
23 	_ASM_EXTABLE_UACCESS_ERR(2b, 3b, %0)			\
42 		__futex_atomic_op("add.w $t0, %1, %z5", ret, oldval, uaddr, oparg);  in arch_futex_atomic_op_inuser()
45 		__futex_atomic_op("or	$t0, %1, %z5", ret, oldval, uaddr, oparg);  in arch_futex_atomic_op_inuser()
48 		__futex_atomic_op("and	$t0, %1, %z5", ret, oldval, uaddr, ~oparg);  in arch_futex_atomic_op_inuser()
51 		__futex_atomic_op("xor	$t0, %1, %z5", ret, oldval, uaddr, oparg);  in arch_futex_atomic_op_inuser()
54 		ret = -ENOSYS;  in arch_futex_atomic_op_inuser()
72 		return -EFAULT;  in futex_atomic_cmpxchg_inatomic()
76 	"1:	ll.w	%1, %3					\n"  in futex_atomic_cmpxchg_inatomic()
77 	"	bne	%1, %z4, 3f				\n"  in futex_atomic_cmpxchg_inatomic()
80 	"	beqz	$t0, 1b					\n"  in futex_atomic_cmpxchg_inatomic()
83 	_ASM_EXTABLE_UACCESS_ERR(1b, 3b, %0)  in futex_atomic_cmpxchg_inatomic()
84 	_ASM_EXTABLE_UACCESS_ERR(2b, 3b, %0)  in futex_atomic_cmpxchg_inatomic()