include/asm/futex.h

1 /* SPDX-License-Identifier: GPL-2.0 */
18 	asm volatile("1:\t" insn "\n"				\
19 		     "2:\n"					\
20 		     "\t.section .fixup,\"ax\"\n"		\
21 		     "3:\tmov\t%3, %1\n"			\
22 		     "\tjmp\t2b\n"				\
23 		     "\t.previous\n"				\
24 		     _ASM_EXTABLE_UA(1b, 3b)			\
26 		     : "i" (-EFAULT), "0" (oparg), "1" (0));	\
36 	asm volatile("1:\tmovl	%2, %0\n"			\
37 		     "2:\tmovl\t%0, %3\n"			\
38 		     "\t" insn "\n"				\
39 		     "3:\t" LOCK_PREFIX "cmpxchgl %3, %2\n"	\
40 		     "\tjnz\t2b\n"				\
41 		     "4:\n"					\
42 		     "\t.section .fixup,\"ax\"\n"		\
43 		     "5:\tmov\t%5, %1\n"			\
44 		     "\tjmp\t4b\n"				\
45 		     "\t.previous\n"				\
47 		     _ASM_EXTABLE_UA(3b, 5b)			\
50 		     : "r" (oparg), "i" (-EFAULT), "1" (0));	\
60 		return -EFAULT;  in arch_futex_atomic_op_inuser()
71 		unsafe_atomic_op2("orl %4, %3", oval, uaddr, oparg, Efault);  in arch_futex_atomic_op_inuser()
74 		unsafe_atomic_op2("andl %4, %3", oval, uaddr, ~oparg, Efault);  in arch_futex_atomic_op_inuser()
77 		unsafe_atomic_op2("xorl %4, %3", oval, uaddr, oparg, Efault);  in arch_futex_atomic_op_inuser()
81 		return -ENOSYS;  in arch_futex_atomic_op_inuser()
87 	return -EFAULT;  in arch_futex_atomic_op_inuser()
96 		return -EFAULT;  in futex_atomic_cmpxchg_inatomic()
97 	asm volatile("\n"  in futex_atomic_cmpxchg_inatomic()
98 		"1:\t" LOCK_PREFIX "cmpxchgl %4, %2\n"  in futex_atomic_cmpxchg_inatomic()
99 		"2:\n"  in futex_atomic_cmpxchg_inatomic()
100 		"\t.section .fixup, \"ax\"\n"  in futex_atomic_cmpxchg_inatomic()
101 		"3:\tmov     %3, %0\n"  in futex_atomic_cmpxchg_inatomic()
102 		"\tjmp     2b\n"  in futex_atomic_cmpxchg_inatomic()
103 		"\t.previous\n"  in futex_atomic_cmpxchg_inatomic()
104 		_ASM_EXTABLE_UA(1b, 3b)  in futex_atomic_cmpxchg_inatomic()
106 		: "i" (-EFAULT), "r" (newval), "1" (oldval)  in futex_atomic_cmpxchg_inatomic()