/* 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 #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 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)); } #ifndef CONFIG_64BIT #define print_ip_sym(ip) \ do { \ printk("[<%08lx>]", ip); \ print_symbol(" %s\n", ip); \ } while(0) #else #define print_ip_sym(ip) \ do { \ printk("[<%016lx>]", ip); \ print_symbol(" %s\n", ip); \ } while(0) #endif #endif /*_LINUX_KALLSYMS_H*/