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
|
#ifndef _SYM_C_ /* -*- linux-c -*- */
#define _SYM_C_
#include "string.c"
/** @file sym.c
* @addtogroup sym Symbolic Functions
* Symbolic Lookup Functions
* @{
*/
/** Lookup symbol.
* This simply calls the kernel function kallsyms_lookup().
* That function is not exported, so this workaround is required.
* See the kernel source, kernel/kallsyms.c for more information.
*/
static const char * (*_stp_kallsyms_lookup)(unsigned long addr,
unsigned long *symbolsize,
unsigned long *offset,
char **modname, char *namebuf)=(void *)KALLSYMS_LOOKUP;
/** Write addresses symbolically into a String
* @param str String
* @param address The address to lookup.
* @note Symbolic lookups should not normally be done within
* a probe because it is too time-consuming. Use at module exit time.
*/
String _stp_symbol_sprint (String str, unsigned long address)
{
char *modname;
const char *name;
unsigned long offset, size;
char namebuf[KSYM_NAME_LEN+1];
name = _stp_kallsyms_lookup(address, &size, &offset, &modname, namebuf);
_stp_sprintf (str, "0x%lx", address);
if (name) {
if (modname)
_stp_sprintf (str, " : %s+%#lx/%#lx [%s]", name, offset, size, modname);
else
_stp_sprintf (str, " : %s+%#lx/%#lx", name, offset, size);
}
return str;
}
/** Print addresses symbolically to the print buffer.
* @param address The address to lookup.
* @note Symbolic lookups should not normally be done within
* a probe because it is too time-consuming. Use at module exit time.
*/
#define _stp_symbol_print(address) _stp_symbol_sprint(_stp_stdout,address)
/** @} */
#endif /* _SYM_C_ */
|
