| 1 | /* Rewritten and vastly simplified by Rusty Russell for in-kernel |
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| 2 | * module loader: |
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| 3 | * Copyright 2002 Rusty Russell <rusty@rustcorp.com.au> IBM Corporation |
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| 4 | */ |
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| 5 | #ifndef _LINUX_KALLSYMS_H |
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| 6 | #define _LINUX_KALLSYMS_H |
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| 7 | |
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| 8 | |
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| 9 | #define KSYM_NAME_LEN 127 |
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| 10 | |
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| 11 | #ifdef CONFIG_KALLSYMS |
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| 12 | /* Lookup the address for a symbol. Returns 0 if not found. */ |
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| 13 | unsigned long kallsyms_lookup_name(const char *name); |
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| 14 | |
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| 15 | /* Lookup an address. modname is set to NULL if it's in the kernel. */ |
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| 16 | const char *kallsyms_lookup(unsigned long addr, |
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| 17 | unsigned long *symbolsize, |
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| 18 | unsigned long *offset, |
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| 19 | char **modname, char *namebuf); |
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| 20 | |
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| 21 | /* Replace "%s" in format with address, if found */ |
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| 22 | extern void __print_symbol(const char *fmt, unsigned long address); |
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| 23 | |
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| 24 | #else /* !CONFIG_KALLSYMS */ |
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| 25 | |
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| 26 | static inline unsigned long kallsyms_lookup_name(const char *name) |
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| 27 | { |
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| 28 | return 0; |
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| 29 | } |
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| 30 | |
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| 31 | static inline const char *kallsyms_lookup(unsigned long addr, |
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| 32 | unsigned long *symbolsize, |
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| 33 | unsigned long *offset, |
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| 34 | char **modname, char *namebuf) |
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| 35 | { |
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| 36 | return NULL; |
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| 37 | } |
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| 38 | |
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| 39 | /* Stupid that this does nothing, but I didn't create this mess. */ |
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| 40 | #define __print_symbol(fmt, addr) |
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| 41 | #endif /*CONFIG_KALLSYMS*/ |
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| 42 | |
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| 43 | /* This macro allows us to keep printk typechecking */ |
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| 44 | static void __check_printsym_format(const char *fmt, ...) |
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| 45 | __attribute__((format(printf,1,2))); |
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| 46 | static inline void __check_printsym_format(const char *fmt, ...) |
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| 47 | { |
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| 48 | } |
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| 49 | /* ia64 and ppc64 use function descriptors, which contain the real address */ |
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| 50 | #if defined(CONFIG_IA64) || defined(CONFIG_PPC64) |
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| 51 | #define print_fn_descriptor_symbol(fmt, addr) \ |
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| 52 | do { \ |
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| 53 | unsigned long *__faddr = (unsigned long*) addr; \ |
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| 54 | print_symbol(fmt, __faddr[0]); \ |
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| 55 | } while (0) |
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| 56 | #else |
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| 57 | #define print_fn_descriptor_symbol(fmt, addr) print_symbol(fmt, addr) |
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| 58 | #endif |
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| 59 | |
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| 60 | #define print_symbol(fmt, addr) \ |
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| 61 | do { \ |
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| 62 | __check_printsym_format(fmt, ""); \ |
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| 63 | __print_symbol(fmt, addr); \ |
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| 64 | } while(0) |
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| 65 | |
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| 66 | #endif /*_LINUX_KALLSYMS_H*/ |
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