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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 | |
42e38083 RP |
10 | #define KSYM_SYMBOL_LEN (sizeof("%s+%#lx/%#lx [%s]") + KSYM_NAME_LEN + \ |
11 | 2*(BITS_PER_LONG*3/10) + MODULE_NAME_LEN + 1) | |
1da177e4 LT |
12 | |
13 | #ifdef CONFIG_KALLSYMS | |
14 | /* Lookup the address for a symbol. Returns 0 if not found. */ | |
15 | unsigned long kallsyms_lookup_name(const char *name); | |
16 | ||
ffc50891 FBH |
17 | extern int kallsyms_lookup_size_offset(unsigned long addr, |
18 | unsigned long *symbolsize, | |
19 | unsigned long *offset); | |
20 | ||
1da177e4 LT |
21 | /* Lookup an address. modname is set to NULL if it's in the kernel. */ |
22 | const char *kallsyms_lookup(unsigned long addr, | |
23 | unsigned long *symbolsize, | |
24 | unsigned long *offset, | |
25 | char **modname, char *namebuf); | |
26 | ||
42e38083 RP |
27 | /* Look up a kernel symbol and return it in a text buffer. */ |
28 | extern int sprint_symbol(char *buffer, unsigned long address); | |
29 | ||
30 | /* Look up a kernel symbol and print it to the kernel messages. */ | |
1da177e4 LT |
31 | extern void __print_symbol(const char *fmt, unsigned long address); |
32 | ||
33 | #else /* !CONFIG_KALLSYMS */ | |
34 | ||
35 | static inline unsigned long kallsyms_lookup_name(const char *name) | |
36 | { | |
37 | return 0; | |
38 | } | |
39 | ||
ffc50891 FBH |
40 | static inline int kallsyms_lookup_size_offset(unsigned long addr, |
41 | unsigned long *symbolsize, | |
42 | unsigned long *offset) | |
43 | { | |
44 | return 0; | |
45 | } | |
46 | ||
1da177e4 LT |
47 | static inline const char *kallsyms_lookup(unsigned long addr, |
48 | unsigned long *symbolsize, | |
49 | unsigned long *offset, | |
50 | char **modname, char *namebuf) | |
51 | { | |
52 | return NULL; | |
53 | } | |
54 | ||
42e38083 RP |
55 | static inline int sprint_symbol(char *buffer, unsigned long addr) |
56 | { | |
57 | *buffer = '\0'; | |
58 | return 0; | |
59 | } | |
60 | ||
1da177e4 LT |
61 | /* Stupid that this does nothing, but I didn't create this mess. */ |
62 | #define __print_symbol(fmt, addr) | |
63 | #endif /*CONFIG_KALLSYMS*/ | |
64 | ||
65 | /* This macro allows us to keep printk typechecking */ | |
66 | static void __check_printsym_format(const char *fmt, ...) | |
67 | __attribute__((format(printf,1,2))); | |
68 | static inline void __check_printsym_format(const char *fmt, ...) | |
69 | { | |
70 | } | |
71 | /* ia64 and ppc64 use function descriptors, which contain the real address */ | |
72 | #if defined(CONFIG_IA64) || defined(CONFIG_PPC64) | |
73 | #define print_fn_descriptor_symbol(fmt, addr) \ | |
74 | do { \ | |
75 | unsigned long *__faddr = (unsigned long*) addr; \ | |
76 | print_symbol(fmt, __faddr[0]); \ | |
77 | } while (0) | |
78 | #else | |
79 | #define print_fn_descriptor_symbol(fmt, addr) print_symbol(fmt, addr) | |
80 | #endif | |
81 | ||
b02454f4 HC |
82 | static inline void print_symbol(const char *fmt, unsigned long addr) |
83 | { | |
84 | __check_printsym_format(fmt, ""); | |
85 | __print_symbol(fmt, (unsigned long) | |
86 | __builtin_extract_return_addr((void *)addr)); | |
87 | } | |
1da177e4 | 88 | |
8d8fdf5c HC |
89 | #ifndef CONFIG_64BIT |
90 | #define print_ip_sym(ip) \ | |
91 | do { \ | |
92 | printk("[<%08lx>]", ip); \ | |
93 | print_symbol(" %s\n", ip); \ | |
94 | } while(0) | |
95 | #else | |
96 | #define print_ip_sym(ip) \ | |
97 | do { \ | |
98 | printk("[<%016lx>]", ip); \ | |
99 | print_symbol(" %s\n", ip); \ | |
100 | } while(0) | |
101 | #endif | |
102 | ||
1da177e4 | 103 | #endif /*_LINUX_KALLSYMS_H*/ |