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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 | ||
ffc50891 FBH |
15 | extern int kallsyms_lookup_size_offset(unsigned long addr, |
16 | unsigned long *symbolsize, | |
17 | unsigned long *offset); | |
18 | ||
1da177e4 LT |
19 | /* Lookup an address. modname is set to NULL if it's in the kernel. */ |
20 | const char *kallsyms_lookup(unsigned long addr, | |
21 | unsigned long *symbolsize, | |
22 | unsigned long *offset, | |
23 | char **modname, char *namebuf); | |
24 | ||
25 | /* Replace "%s" in format with address, if found */ | |
26 | extern void __print_symbol(const char *fmt, unsigned long address); | |
27 | ||
28 | #else /* !CONFIG_KALLSYMS */ | |
29 | ||
30 | static inline unsigned long kallsyms_lookup_name(const char *name) | |
31 | { | |
32 | return 0; | |
33 | } | |
34 | ||
ffc50891 FBH |
35 | static inline int kallsyms_lookup_size_offset(unsigned long addr, |
36 | unsigned long *symbolsize, | |
37 | unsigned long *offset) | |
38 | { | |
39 | return 0; | |
40 | } | |
41 | ||
1da177e4 LT |
42 | static inline const char *kallsyms_lookup(unsigned long addr, |
43 | unsigned long *symbolsize, | |
44 | unsigned long *offset, | |
45 | char **modname, char *namebuf) | |
46 | { | |
47 | return NULL; | |
48 | } | |
49 | ||
50 | /* Stupid that this does nothing, but I didn't create this mess. */ | |
51 | #define __print_symbol(fmt, addr) | |
52 | #endif /*CONFIG_KALLSYMS*/ | |
53 | ||
54 | /* This macro allows us to keep printk typechecking */ | |
55 | static void __check_printsym_format(const char *fmt, ...) | |
56 | __attribute__((format(printf,1,2))); | |
57 | static inline void __check_printsym_format(const char *fmt, ...) | |
58 | { | |
59 | } | |
60 | /* ia64 and ppc64 use function descriptors, which contain the real address */ | |
61 | #if defined(CONFIG_IA64) || defined(CONFIG_PPC64) | |
62 | #define print_fn_descriptor_symbol(fmt, addr) \ | |
63 | do { \ | |
64 | unsigned long *__faddr = (unsigned long*) addr; \ | |
65 | print_symbol(fmt, __faddr[0]); \ | |
66 | } while (0) | |
67 | #else | |
68 | #define print_fn_descriptor_symbol(fmt, addr) print_symbol(fmt, addr) | |
69 | #endif | |
70 | ||
b02454f4 HC |
71 | static inline void print_symbol(const char *fmt, unsigned long addr) |
72 | { | |
73 | __check_printsym_format(fmt, ""); | |
74 | __print_symbol(fmt, (unsigned long) | |
75 | __builtin_extract_return_addr((void *)addr)); | |
76 | } | |
1da177e4 | 77 | |
8d8fdf5c HC |
78 | #ifndef CONFIG_64BIT |
79 | #define print_ip_sym(ip) \ | |
80 | do { \ | |
81 | printk("[<%08lx>]", ip); \ | |
82 | print_symbol(" %s\n", ip); \ | |
83 | } while(0) | |
84 | #else | |
85 | #define print_ip_sym(ip) \ | |
86 | do { \ | |
87 | printk("[<%016lx>]", ip); \ | |
88 | print_symbol(" %s\n", ip); \ | |
89 | } while(0) | |
90 | #endif | |
91 | ||
1da177e4 | 92 | #endif /*_LINUX_KALLSYMS_H*/ |