1 /* Rewritten and vastly simplified by Rusty Russell for in-kernel
3 * Copyright 2002 Rusty Russell <rusty@rustcorp.com.au> IBM Corporation
5 #ifndef _LINUX_KALLSYMS_H
6 #define _LINUX_KALLSYMS_H
8 #include <linux/errno.h>
9 #include <linux/kernel.h>
10 #include <linux/stddef.h>
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)
18 #ifdef CONFIG_KALLSYMS
19 /* Lookup the address for a symbol. Returns 0 if not found. */
20 unsigned long kallsyms_lookup_name(const char *name
);
22 /* Call a function on each kallsyms symbol in the core kernel */
23 int kallsyms_on_each_symbol(int (*fn
)(void *, const char *, struct module
*,
27 extern int kallsyms_lookup_size_offset(unsigned long addr
,
28 unsigned long *symbolsize
,
29 unsigned long *offset
);
31 /* Lookup an address. modname is set to NULL if it's in the kernel. */
32 const char *kallsyms_lookup(unsigned long addr
,
33 unsigned long *symbolsize
,
34 unsigned long *offset
,
35 char **modname
, char *namebuf
);
37 /* Look up a kernel symbol and return it in a text buffer. */
38 extern int sprint_symbol(char *buffer
, unsigned long address
);
39 extern int sprint_symbol_no_offset(char *buffer
, unsigned long address
);
40 extern int sprint_backtrace(char *buffer
, unsigned long address
);
42 /* Look up a kernel symbol and print it to the kernel messages. */
43 extern void __print_symbol(const char *fmt
, unsigned long address
);
45 int lookup_symbol_name(unsigned long addr
, char *symname
);
46 int lookup_symbol_attrs(unsigned long addr
, unsigned long *size
, unsigned long *offset
, char *modname
, char *name
);
48 #else /* !CONFIG_KALLSYMS */
50 static inline unsigned long kallsyms_lookup_name(const char *name
)
55 static inline int kallsyms_on_each_symbol(int (*fn
)(void *, const char *,
63 static inline int kallsyms_lookup_size_offset(unsigned long addr
,
64 unsigned long *symbolsize
,
65 unsigned long *offset
)
70 static inline const char *kallsyms_lookup(unsigned long addr
,
71 unsigned long *symbolsize
,
72 unsigned long *offset
,
73 char **modname
, char *namebuf
)
78 static inline int sprint_symbol(char *buffer
, unsigned long addr
)
84 static inline int sprint_symbol_no_offset(char *buffer
, unsigned long addr
)
90 static inline int sprint_backtrace(char *buffer
, unsigned long addr
)
96 static inline int lookup_symbol_name(unsigned long addr
, char *symname
)
101 static inline int lookup_symbol_attrs(unsigned long addr
, unsigned long *size
, unsigned long *offset
, char *modname
, char *name
)
106 /* Stupid that this does nothing, but I didn't create this mess. */
107 #define __print_symbol(fmt, addr)
108 #endif /*CONFIG_KALLSYMS*/
110 /* This macro allows us to keep printk typechecking */
111 static __printf(1, 2)
112 void __check_printsym_format(const char *fmt
, ...)
116 static inline void print_symbol(const char *fmt
, unsigned long addr
)
118 __check_printsym_format(fmt
, "");
119 __print_symbol(fmt
, (unsigned long)
120 __builtin_extract_return_addr((void *)addr
));
123 static inline void print_ip_sym(unsigned long ip
)
125 printk("[<%p>] %pS\n", (void *) ip
, (void *) ip
);
128 #endif /*_LINUX_KALLSYMS_H*/
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