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include/linux/kallsyms.h
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/* 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 |
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#include <linux/errno.h> |
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#include <linux/kernel.h> |
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#include <linux/stddef.h> |
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#define KSYM_NAME_LEN 128 #define KSYM_SYMBOL_LEN (sizeof("%s+%#lx/%#lx [%s]") + (KSYM_NAME_LEN - 1) + \ 2*(BITS_PER_LONG*3/10) + (MODULE_NAME_LEN - 1) + 1) |
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struct module; |
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#ifdef CONFIG_KALLSYMS /* Lookup the address for a symbol. Returns 0 if not found. */ unsigned long kallsyms_lookup_name(const char *name); |
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/* Call a function on each kallsyms symbol in the core kernel */ int kallsyms_on_each_symbol(int (*fn)(void *, const char *, struct module *, unsigned long), void *data); |
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extern int kallsyms_lookup_size_offset(unsigned long addr, unsigned long *symbolsize, unsigned long *offset); |
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/* 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); |
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/* Look up a kernel symbol and return it in a text buffer. */ extern int sprint_symbol(char *buffer, unsigned long address); |
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extern int sprint_backtrace(char *buffer, unsigned long address); |
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/* Look up a kernel symbol and print it to the kernel messages. */ |
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extern void __print_symbol(const char *fmt, unsigned long address); |
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int lookup_symbol_name(unsigned long addr, char *symname); |
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int lookup_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name); |
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#else /* !CONFIG_KALLSYMS */ static inline unsigned long kallsyms_lookup_name(const char *name) { return 0; } |
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static inline int kallsyms_on_each_symbol(int (*fn)(void *, const char *, struct module *, unsigned long), void *data) { return 0; } |
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static inline int kallsyms_lookup_size_offset(unsigned long addr, unsigned long *symbolsize, unsigned long *offset) { return 0; } |
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static inline const char *kallsyms_lookup(unsigned long addr, unsigned long *symbolsize, unsigned long *offset, char **modname, char *namebuf) { return NULL; } |
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static inline int sprint_symbol(char *buffer, unsigned long addr) { *buffer = '\0'; return 0; } |
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static inline int sprint_backtrace(char *buffer, unsigned long addr) { *buffer = '\0'; return 0; } |
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static inline int lookup_symbol_name(unsigned long addr, char *symname) { return -ERANGE; } |
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static inline int lookup_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name) { return -ERANGE; } |
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/* 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 */ |
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static __printf(1, 2) void __check_printsym_format(const char *fmt, ...) |
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{ } |
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static inline void print_symbol(const char *fmt, unsigned long addr) { __check_printsym_format(fmt, ""); __print_symbol(fmt, (unsigned long) __builtin_extract_return_addr((void *)addr)); } |
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static inline void print_ip_sym(unsigned long ip) { |
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printk("[<%p>] %pS ", (void *) ip, (void *) ip); |
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} |
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#endif /*_LINUX_KALLSYMS_H*/ |