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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
-
- #include <linux/errno.h>
- #include <linux/kernel.h>
- #include <linux/stddef.h>
-
- #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)
-
- #ifdef CONFIG_KALLSYMS
- /* Lookup the address for a symbol. Returns 0 if not found. */
- unsigned long kallsyms_lookup_name(const char *name);
-
- extern int kallsyms_lookup_size_offset(unsigned long addr,
- unsigned long *symbolsize,
- unsigned long *offset);
-
- /* 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);
-
- /* 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. */
- extern void __print_symbol(const char *fmt, unsigned long address);
-
- int lookup_symbol_name(unsigned long addr, char *symname);
- int lookup_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name);
-
- #else /* !CONFIG_KALLSYMS */
-
- static inline unsigned long kallsyms_lookup_name(const char *name)
- {
- return 0;
- }
-
- static inline int kallsyms_lookup_size_offset(unsigned long addr,
- unsigned long *symbolsize,
- unsigned long *offset)
- {
- return 0;
- }
-
- static inline const char *kallsyms_lookup(unsigned long addr,
- unsigned long *symbolsize,
- unsigned long *offset,
- char **modname, char *namebuf)
- {
- return NULL;
- }
-
- static inline int sprint_symbol(char *buffer, unsigned long addr)
- {
- *buffer = '\0';
- return 0;
- }
-
- static inline int lookup_symbol_name(unsigned long addr, char *symname)
- {
- return -ERANGE;
- }
-
- static inline int lookup_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name)
- {
- return -ERANGE;
- }
-
- /* 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, ...)
- {
- }
-
- 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));
- }
-
- /*
- * Pretty-print a function pointer. This function is deprecated.
- * Please use the "%pF" vsprintf format instead.
- */
- static inline void __deprecated print_fn_descriptor_symbol(const char *fmt, void *addr)
- {
- #if defined(CONFIG_IA64) || defined(CONFIG_PPC64)
- addr = *(void **)addr;
- #endif
- print_symbol(fmt, (unsigned long)addr);
- }
-
- static inline void print_ip_sym(unsigned long ip)
- {
- printk("[<%p>] %pS\n", (void *) ip, (void *) ip);
- }
-
- #endif /*_LINUX_KALLSYMS_H*/
-