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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 | ||
40e48eed | 8 | #include <linux/errno.h> |
2711b793 | 9 | #include <linux/kernel.h> |
5a75983e | 10 | #include <linux/stddef.h> |
1da177e4 | 11 | |
9281acea TH |
12 | #define KSYM_NAME_LEN 128 |
13 | #define KSYM_SYMBOL_LEN (sizeof("%s+%#lx/%#lx [%s]") + (KSYM_NAME_LEN - 1) + \ | |
14 | 2*(BITS_PER_LONG*3/10) + (MODULE_NAME_LEN - 1) + 1) | |
1da177e4 LT |
15 | |
16 | #ifdef CONFIG_KALLSYMS | |
17 | /* Lookup the address for a symbol. Returns 0 if not found. */ | |
18 | unsigned long kallsyms_lookup_name(const char *name); | |
19 | ||
ffc50891 FBH |
20 | extern int kallsyms_lookup_size_offset(unsigned long addr, |
21 | unsigned long *symbolsize, | |
22 | unsigned long *offset); | |
23 | ||
1da177e4 LT |
24 | /* Lookup an address. modname is set to NULL if it's in the kernel. */ |
25 | const char *kallsyms_lookup(unsigned long addr, | |
26 | unsigned long *symbolsize, | |
27 | unsigned long *offset, | |
28 | char **modname, char *namebuf); | |
29 | ||
42e38083 RP |
30 | /* Look up a kernel symbol and return it in a text buffer. */ |
31 | extern int sprint_symbol(char *buffer, unsigned long address); | |
32 | ||
33 | /* Look up a kernel symbol and print it to the kernel messages. */ | |
1da177e4 LT |
34 | extern void __print_symbol(const char *fmt, unsigned long address); |
35 | ||
9d65cb4a | 36 | int lookup_symbol_name(unsigned long addr, char *symname); |
a5c43dae | 37 | int lookup_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name); |
9d65cb4a | 38 | |
1da177e4 LT |
39 | #else /* !CONFIG_KALLSYMS */ |
40 | ||
41 | static inline unsigned long kallsyms_lookup_name(const char *name) | |
42 | { | |
43 | return 0; | |
44 | } | |
45 | ||
ffc50891 FBH |
46 | static inline int kallsyms_lookup_size_offset(unsigned long addr, |
47 | unsigned long *symbolsize, | |
48 | unsigned long *offset) | |
49 | { | |
50 | return 0; | |
51 | } | |
52 | ||
1da177e4 LT |
53 | static inline const char *kallsyms_lookup(unsigned long addr, |
54 | unsigned long *symbolsize, | |
55 | unsigned long *offset, | |
56 | char **modname, char *namebuf) | |
57 | { | |
58 | return NULL; | |
59 | } | |
60 | ||
42e38083 RP |
61 | static inline int sprint_symbol(char *buffer, unsigned long addr) |
62 | { | |
63 | *buffer = '\0'; | |
64 | return 0; | |
65 | } | |
66 | ||
9d65cb4a AD |
67 | static inline int lookup_symbol_name(unsigned long addr, char *symname) |
68 | { | |
69 | return -ERANGE; | |
70 | } | |
71 | ||
a5c43dae AD |
72 | static inline int lookup_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name) |
73 | { | |
74 | return -ERANGE; | |
75 | } | |
76 | ||
1da177e4 LT |
77 | /* Stupid that this does nothing, but I didn't create this mess. */ |
78 | #define __print_symbol(fmt, addr) | |
79 | #endif /*CONFIG_KALLSYMS*/ | |
80 | ||
81 | /* This macro allows us to keep printk typechecking */ | |
82 | static void __check_printsym_format(const char *fmt, ...) | |
83 | __attribute__((format(printf,1,2))); | |
84 | static inline void __check_printsym_format(const char *fmt, ...) | |
85 | { | |
86 | } | |
1da177e4 | 87 | |
b02454f4 HC |
88 | static inline void print_symbol(const char *fmt, unsigned long addr) |
89 | { | |
90 | __check_printsym_format(fmt, ""); | |
91 | __print_symbol(fmt, (unsigned long) | |
92 | __builtin_extract_return_addr((void *)addr)); | |
93 | } | |
1da177e4 | 94 | |
a442ac51 | 95 | /* |
c80cfb04 BH |
96 | * Pretty-print a function pointer. This function is deprecated. |
97 | * Please use the "%pF" vsprintf format instead. | |
a442ac51 | 98 | */ |
c80cfb04 | 99 | static inline void __deprecated print_fn_descriptor_symbol(const char *fmt, void *addr) |
a442ac51 LT |
100 | { |
101 | #if defined(CONFIG_IA64) || defined(CONFIG_PPC64) | |
102 | addr = *(void **)addr; | |
103 | #endif | |
104 | print_symbol(fmt, (unsigned long)addr); | |
105 | } | |
106 | ||
2711b793 VN |
107 | static inline void print_ip_sym(unsigned long ip) |
108 | { | |
3f1712ba | 109 | printk("[<%p>] %pS\n", (void *) ip, (void *) ip); |
2711b793 | 110 | } |
8d8fdf5c | 111 | |
1da177e4 | 112 | #endif /*_LINUX_KALLSYMS_H*/ |