xref: /linux/arch/s390/kernel/mcount.S (revision b233b28eac0cc37d07c2d007ea08c86c778c5af4)
1/*
2 * Copyright IBM Corp. 2008
3 *
4 *   Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>,
5 *
6 */
7
8#ifndef CONFIG_64BIT
9.globl _mcount
10_mcount:
11	stm	%r0,%r5,8(%r15)
12	st	%r14,56(%r15)
13	lr	%r1,%r15
14	ahi	%r15,-96
15	l	%r3,100(%r15)
16	la	%r2,0(%r14)
17	st	%r1,0(%r15)
18	la	%r3,0(%r3)
19	bras	%r14,0f
20	.long	ftrace_trace_function
210:	l	%r14,0(%r14)
22	l	%r14,0(%r14)
23	basr	%r14,%r14
24	ahi	%r15,96
25	lm	%r0,%r5,8(%r15)
26	l	%r14,56(%r15)
27	br	%r14
28
29.globl ftrace_stub
30ftrace_stub:
31	br	%r14
32
33#else /* CONFIG_64BIT */
34
35.globl _mcount
36_mcount:
37	stmg	%r0,%r5,16(%r15)
38	stg	%r14,112(%r15)
39	lgr	%r1,%r15
40	aghi	%r15,-160
41	stg	%r1,0(%r15)
42	lgr	%r2,%r14
43	lg	%r3,168(%r15)
44	larl	%r14,ftrace_trace_function
45	lg	%r14,0(%r14)
46	basr	%r14,%r14
47	aghi	%r15,160
48	lmg	%r0,%r5,16(%r15)
49	lg	%r14,112(%r15)
50	br	%r14
51
52.globl ftrace_stub
53ftrace_stub:
54	br	%r14
55
56#endif /* CONFIG_64BIT */
57