blob: 8a029505d7b7e59a89ac339c0946f32c94392abe (
plain) (
blame)
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
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
/*
* Blackfin ftrace code
*
* Copyright 2009 Analog Devices Inc.
* Licensed under the GPL-2 or later.
*/
#ifndef __ASM_BFIN_FTRACE_H__
#define __ASM_BFIN_FTRACE_H__
#define MCOUNT_INSN_SIZE 6 /* sizeof "[++sp] = rets; call __mcount;" */
#ifndef __ASSEMBLY__
#ifdef CONFIG_DYNAMIC_FTRACE
extern void _mcount(void);
#define MCOUNT_ADDR ((unsigned long)_mcount)
static inline unsigned long ftrace_call_adjust(unsigned long addr)
{
return addr;
}
struct dyn_arch_ftrace {
/* No extra data needed for Blackfin */
};
#endif
#ifdef CONFIG_FRAME_POINTER
#include <linux/mm.h>
extern inline void *return_address(unsigned int level)
{
unsigned long *endstack, *fp, *ret_addr;
unsigned int current_level = 0;
if (level == 0)
return __builtin_return_address(0);
fp = (unsigned long *)__builtin_frame_address(0);
endstack = (unsigned long *)PAGE_ALIGN((unsigned long)&level);
while (((unsigned long)fp & 0x3) == 0 && fp &&
(fp + 1) < endstack && current_level < level) {
fp = (unsigned long *)*fp;
current_level++;
}
if (((unsigned long)fp & 0x3) == 0 && fp &&
(fp + 1) < endstack)
ret_addr = (unsigned long *)*(fp + 1);
else
ret_addr = NULL;
return ret_addr;
}
#else
extern inline void *return_address(unsigned int level)
{
return NULL;
}
#endif /* CONFIG_FRAME_POINTER */
#define HAVE_ARCH_CALLER_ADDR
/* inline function or macro may lead to unexpected result */
#define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0))
#define CALLER_ADDR1 ((unsigned long)return_address(1))
#define CALLER_ADDR2 ((unsigned long)return_address(2))
#define CALLER_ADDR3 ((unsigned long)return_address(3))
#define CALLER_ADDR4 ((unsigned long)return_address(4))
#define CALLER_ADDR5 ((unsigned long)return_address(5))
#define CALLER_ADDR6 ((unsigned long)return_address(6))
#endif /* __ASSEMBLY__ */
#endif
|
