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