projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* Rewritten and vastly simplified by Rusty Russell for in-kernel |
| 2 | * module loader: | |
| 3 | * Copyright 2002 Rusty Russell <rusty@rustcorp.com.au> IBM Corporation | |
| 4 | */ | |
| 5 | #ifndef _LINUX_KALLSYMS_H | |
| 6 | #define _LINUX_KALLSYMS_H | |
| 7 | ||
| 1da177e4 LT |
8 | |
| 9 | #define KSYM_NAME_LEN 127 | |
| 10 | ||
| 11 | #ifdef CONFIG_KALLSYMS | |
| 12 | /* Lookup the address for a symbol. Returns 0 if not found. */ | |
| 13 | unsigned long kallsyms_lookup_name(const char *name); | |
| 14 | ||
| 15 | /* Lookup an address. modname is set to NULL if it's in the kernel. */ | |
| 16 | const char *kallsyms_lookup(unsigned long addr, | |
| 17 | unsigned long *symbolsize, | |
| 18 | unsigned long *offset, | |
| 19 | char **modname, char *namebuf); | |
| 20 | ||
| 21 | /* Replace "%s" in format with address, if found */ | |
| 22 | extern void __print_symbol(const char *fmt, unsigned long address); | |
| 23 | ||
| 24 | #else /* !CONFIG_KALLSYMS */ | |
| 25 | ||
| 26 | static inline unsigned long kallsyms_lookup_name(const char *name) | |
| 27 | { | |
| 28 | return 0; | |
| 29 | } | |
| 30 | ||
| 31 | static inline const char *kallsyms_lookup(unsigned long addr, | |
| 32 | unsigned long *symbolsize, | |
| 33 | unsigned long *offset, | |
| 34 | char **modname, char *namebuf) | |
| 35 | { | |
| 36 | return NULL; | |
| 37 | } | |
| 38 | ||
| 39 | /* Stupid that this does nothing, but I didn't create this mess. */ | |
| 40 | #define __print_symbol(fmt, addr) | |
| 41 | #endif /*CONFIG_KALLSYMS*/ | |
| 42 | ||
| 43 | /* This macro allows us to keep printk typechecking */ | |
| 44 | static void __check_printsym_format(const char *fmt, ...) | |
| 45 | __attribute__((format(printf,1,2))); | |
| 46 | static inline void __check_printsym_format(const char *fmt, ...) | |
| 47 | { | |
| 48 | } | |
| 49 | /* ia64 and ppc64 use function descriptors, which contain the real address */ | |
| 50 | #if defined(CONFIG_IA64) || defined(CONFIG_PPC64) | |
| 51 | #define print_fn_descriptor_symbol(fmt, addr) \ | |
| 52 | do { \ | |
| 53 | unsigned long *__faddr = (unsigned long*) addr; \ | |
| 54 | print_symbol(fmt, __faddr[0]); \ | |
| 55 | } while (0) | |
| 56 | #else | |
| 57 | #define print_fn_descriptor_symbol(fmt, addr) print_symbol(fmt, addr) | |
| 58 | #endif | |
| 59 | ||
| b02454f4 HC |
60 | static inline void print_symbol(const char *fmt, unsigned long addr) |
| 61 | { | |
| 62 | __check_printsym_format(fmt, ""); | |
| 63 | __print_symbol(fmt, (unsigned long) | |
| 64 | __builtin_extract_return_addr((void *)addr)); | |
| 65 | } | |
| 1da177e4 LT |
66 | |
| 67 | #endif /*_LINUX_KALLSYMS_H*/ |