1 /* SPDX-License-Identifier: GPL-2.0 */
17 #define arch_spin_is_locked(x)	((x)->lock != 0)
27 	lock->lock = 0;  in arch_spin_unlock()
35 	"1:	ldl_l	%0,%1\n"  in arch_spin_lock()
36 	"	bne	%0,2f\n"  in arch_spin_lock()
37 	"	lda	%0,1\n"  in arch_spin_lock()
38 	"	stl_c	%0,%1\n"  in arch_spin_lock()
39 	"	beq	%0,2f\n"  in arch_spin_lock()
40 	"	mb\n"  in arch_spin_lock()
41 	".subsection 2\n"  in arch_spin_lock()
42 	"2:	ldl	%0,%1\n"  in arch_spin_lock()
43 	"	bne	%0,2b\n"  in arch_spin_lock()
44 	"	br	1b\n"  in arch_spin_lock()
46 	: "=&r" (tmp), "=m" (lock->lock)  in arch_spin_lock()
47 	: "m"(lock->lock) : "memory");  in arch_spin_lock()
52 	return !test_and_set_bit(0, &lock->lock);  in arch_spin_trylock()
62 	"1:	ldl_l	%1,%0\n"  in arch_read_lock()
63 	"	blbs	%1,6f\n"  in arch_read_lock()
64 	"	subl	%1,2,%1\n"  in arch_read_lock()
65 	"	stl_c	%1,%0\n"  in arch_read_lock()
66 	"	beq	%1,6f\n"  in arch_read_lock()
67 	"	mb\n"  in arch_read_lock()
68 	".subsection 2\n"  in arch_read_lock()
69 	"6:	ldl	%1,%0\n"  in arch_read_lock()
70 	"	blbs	%1,6b\n"  in arch_read_lock()
71 	"	br	1b\n"  in arch_read_lock()
82 	"1:	ldl_l	%1,%0\n"  in arch_write_lock()
83 	"	bne	%1,6f\n"  in arch_write_lock()
84 	"	lda	%1,1\n"  in arch_write_lock()
85 	"	stl_c	%1,%0\n"  in arch_write_lock()
86 	"	beq	%1,6f\n"  in arch_write_lock()
87 	"	mb\n"  in arch_write_lock()
88 	".subsection 2\n"  in arch_write_lock()
89 	"6:	ldl	%1,%0\n"  in arch_write_lock()
90 	"	bne	%1,6b\n"  in arch_write_lock()
91 	"	br	1b\n"  in arch_write_lock()
103 	"1:	ldl_l	%1,%0\n"  in arch_read_trylock()
104 	"	lda	%2,0\n"  in arch_read_trylock()
105 	"	blbs	%1,2f\n"  in arch_read_trylock()
106 	"	subl	%1,2,%2\n"  in arch_read_trylock()
107 	"	stl_c	%2,%0\n"  in arch_read_trylock()
108 	"	beq	%2,6f\n"  in arch_read_trylock()
109 	"2:	mb\n"  in arch_read_trylock()
110 	".subsection 2\n"  in arch_read_trylock()
111 	"6:	br	1b\n"  in arch_read_trylock()
125 	"1:	ldl_l	%1,%0\n"  in arch_write_trylock()
126 	"	lda	%2,0\n"  in arch_write_trylock()
127 	"	bne	%1,2f\n"  in arch_write_trylock()
128 	"	lda	%2,1\n"  in arch_write_trylock()
129 	"	stl_c	%2,%0\n"  in arch_write_trylock()
130 	"	beq	%2,6f\n"  in arch_write_trylock()
131 	"2:	mb\n"  in arch_write_trylock()
132 	".subsection 2\n"  in arch_write_trylock()
133 	"6:	br	1b\n"  in arch_write_trylock()
145 	"	mb\n"  in arch_read_unlock()
146 	"1:	ldl_l	%1,%0\n"  in arch_read_unlock()
147 	"	addl	%1,2,%1\n"  in arch_read_unlock()
148 	"	stl_c	%1,%0\n"  in arch_read_unlock()
149 	"	beq	%1,6f\n"  in arch_read_unlock()
150 	".subsection 2\n"  in arch_read_unlock()
151 	"6:	br	1b\n"  in arch_read_unlock()
160 	lock->lock = 0;  in arch_write_unlock()