1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
#ifndef _ASM_POWERPC_FTRACE
#define _ASM_POWERPC_FTRACE
#ifdef CONFIG_FUNCTION_TRACER
#define MCOUNT_ADDR ((long)(_mcount))
#define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */
#ifdef __ASSEMBLY__
/* Based off of objdump optput from glibc */
#define MCOUNT_SAVE_FRAME \
stwu r1,-48(r1); \
stw r3, 12(r1); \
stw r4, 16(r1); \
stw r5, 20(r1); \
stw r6, 24(r1); \
mflr r3; \
lwz r4, 52(r1); \
mfcr r5; \
stw r7, 28(r1); \
stw r8, 32(r1); \
stw r9, 36(r1); \
stw r10,40(r1); \
stw r3, 44(r1); \
stw r5, 8(r1)
#define MCOUNT_RESTORE_FRAME \
lwz r6, 8(r1); \
lwz r0, 44(r1); \
lwz r3, 12(r1); \
mtctr r0; \
lwz r4, 16(r1); \
mtcr r6; \
lwz r5, 20(r1); \
lwz r6, 24(r1); \
lwz r0, 52(r1); \
lwz r7, 28(r1); \
lwz r8, 32(r1); \
mtlr r0; \
lwz r9, 36(r1); \
lwz r10,40(r1); \
addi r1, r1, 48
#else /* !__ASSEMBLY__ */
extern void _mcount(void);
#ifdef CONFIG_DYNAMIC_FTRACE
static inline unsigned long ftrace_call_adjust(unsigned long addr)
{
/* reloction of mcount call site is the same as the address */
return addr;
}
struct dyn_arch_ftrace {
struct module *mod;
};
#endif /* CONFIG_DYNAMIC_FTRACE */
#endif /* __ASSEMBLY__ */
#endif
#endif /* _ASM_POWERPC_FTRACE */
|
