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git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - include/linux/kallsyms.h
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/config.h>
10 #define KSYM_NAME_LEN 127
12 #ifdef CONFIG_KALLSYMS
13 /* Lookup the address for a symbol. Returns 0 if not found. */
14 unsigned long kallsyms_lookup_name(const char *name
);
16 /* Lookup an address. modname is set to NULL if it's in the kernel. */
17 const char *kallsyms_lookup(unsigned long addr
,
18 unsigned long *symbolsize
,
19 unsigned long *offset
,
20 char **modname
, char *namebuf
);
22 /* Replace "%s" in format with address, if found */
23 extern void __print_symbol(const char *fmt
, unsigned long address
);
25 #else /* !CONFIG_KALLSYMS */
27 static inline unsigned long kallsyms_lookup_name(const char *name
)
32 static inline const char *kallsyms_lookup(unsigned long addr
,
33 unsigned long *symbolsize
,
34 unsigned long *offset
,
35 char **modname
, char *namebuf
)
40 /* Stupid that this does nothing, but I didn't create this mess. */
41 #define __print_symbol(fmt, addr)
42 #endif /*CONFIG_KALLSYMS*/
44 /* This macro allows us to keep printk typechecking */
45 static void __check_printsym_format(const char *fmt
, ...)
46 __attribute__((format(printf
,1,2)));
47 static inline void __check_printsym_format(const char *fmt
, ...)
50 /* ia64 and ppc64 use function descriptors, which contain the real address */
51 #if defined(CONFIG_IA64) || defined(CONFIG_PPC64)
52 #define print_fn_descriptor_symbol(fmt, addr) \
54 unsigned long *__faddr = (unsigned long*) addr; \
55 print_symbol(fmt, __faddr[0]); \
58 #define print_fn_descriptor_symbol(fmt, addr) print_symbol(fmt, addr)
61 #define print_symbol(fmt, addr) \
63 __check_printsym_format(fmt, ""); \
64 __print_symbol(fmt, addr); \
67 #endif /*_LINUX_KALLSYMS_H*/