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kallsyms.h
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Wrap
C/C++ Source or Header
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2005-10-13
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2KB
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68 lines
/* Rewritten and vastly simplified by Rusty Russell for in-kernel
* module loader:
* Copyright 2002 Rusty Russell <rusty@rustcorp.com.au> IBM Corporation
*/
#ifndef _LINUX_KALLSYMS_H
#define _LINUX_KALLSYMS_H
#include <linux/config.h>
#define KSYM_NAME_LEN 127
#ifdef CONFIG_KALLSYMS
/* Lookup the address for a symbol. Returns 0 if not found. */
unsigned long kallsyms_lookup_name(const char *name);
/* Lookup an address. modname is set to NULL if it's in the kernel. */
const char *kallsyms_lookup(unsigned long addr,
unsigned long *symbolsize,
unsigned long *offset,
char **modname, char *namebuf);
/* Replace "%s" in format with address, if found */
extern void __print_symbol(const char *fmt, unsigned long address);
#else /* !CONFIG_KALLSYMS */
static inline unsigned long kallsyms_lookup_name(const char *name)
{
return 0;
}
static inline const char *kallsyms_lookup(unsigned long addr,
unsigned long *symbolsize,
unsigned long *offset,
char **modname, char *namebuf)
{
return NULL;
}
/* Stupid that this does nothing, but I didn't create this mess. */
#define __print_symbol(fmt, addr)
#endif /*CONFIG_KALLSYMS*/
/* This macro allows us to keep printk typechecking */
static void __check_printsym_format(const char *fmt, ...)
__attribute__((format(printf,1,2)));
static inline void __check_printsym_format(const char *fmt, ...)
{
}
/* ia64 and ppc64 use function descriptors, which contain the real address */
#if defined(CONFIG_IA64) || defined(CONFIG_PPC64)
#define print_fn_descriptor_symbol(fmt, addr) \
do { \
unsigned long *__faddr = (unsigned long*) addr; \
print_symbol(fmt, __faddr[0]); \
} while (0)
#else
#define print_fn_descriptor_symbol(fmt, addr) print_symbol(fmt, addr)
#endif
#define print_symbol(fmt, addr) \
do { \
__check_printsym_format(fmt, ""); \
__print_symbol(fmt, addr); \
} while(0)
#endif /*_LINUX_KALLSYMS_H*/