Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* Rewritten and vastly simplified by Rusty Russell for in-kernel |
2 | * module loader: | |
3 | * Copyright 2002 Rusty Russell <rusty@rustcorp.com.au> IBM Corporation | |
4 | */ | |
5 | #ifndef _LINUX_KALLSYMS_H | |
6 | #define _LINUX_KALLSYMS_H | |
7 | ||
1da177e4 LT |
8 | |
9 | #define KSYM_NAME_LEN 127 | |
10 | ||
11 | #ifdef CONFIG_KALLSYMS | |
12 | /* Lookup the address for a symbol. Returns 0 if not found. */ | |
13 | unsigned long kallsyms_lookup_name(const char *name); | |
14 | ||
15 | /* Lookup an address. modname is set to NULL if it's in the kernel. */ | |
16 | const char *kallsyms_lookup(unsigned long addr, | |
17 | unsigned long *symbolsize, | |
18 | unsigned long *offset, | |
19 | char **modname, char *namebuf); | |
20 | ||
21 | /* Replace "%s" in format with address, if found */ | |
22 | extern void __print_symbol(const char *fmt, unsigned long address); | |
23 | ||
24 | #else /* !CONFIG_KALLSYMS */ | |
25 | ||
26 | static inline unsigned long kallsyms_lookup_name(const char *name) | |
27 | { | |
28 | return 0; | |
29 | } | |
30 | ||
31 | static inline const char *kallsyms_lookup(unsigned long addr, | |
32 | unsigned long *symbolsize, | |
33 | unsigned long *offset, | |
34 | char **modname, char *namebuf) | |
35 | { | |
36 | return NULL; | |
37 | } | |
38 | ||
39 | /* Stupid that this does nothing, but I didn't create this mess. */ | |
40 | #define __print_symbol(fmt, addr) | |
41 | #endif /*CONFIG_KALLSYMS*/ | |
42 | ||
43 | /* This macro allows us to keep printk typechecking */ | |
44 | static void __check_printsym_format(const char *fmt, ...) | |
45 | __attribute__((format(printf,1,2))); | |
46 | static inline void __check_printsym_format(const char *fmt, ...) | |
47 | { | |
48 | } | |
49 | /* ia64 and ppc64 use function descriptors, which contain the real address */ | |
50 | #if defined(CONFIG_IA64) || defined(CONFIG_PPC64) | |
51 | #define print_fn_descriptor_symbol(fmt, addr) \ | |
52 | do { \ | |
53 | unsigned long *__faddr = (unsigned long*) addr; \ | |
54 | print_symbol(fmt, __faddr[0]); \ | |
55 | } while (0) | |
56 | #else | |
57 | #define print_fn_descriptor_symbol(fmt, addr) print_symbol(fmt, addr) | |
58 | #endif | |
59 | ||
60 | #define print_symbol(fmt, addr) \ | |
61 | do { \ | |
62 | __check_printsym_format(fmt, ""); \ | |
63 | __print_symbol(fmt, addr); \ | |
64 | } while(0) | |
65 | ||
66 | #endif /*_LINUX_KALLSYMS_H*/ |