![Adrian Bunk](/assets/img/avatar_default.png)
This patch fixes the following 2.6.22 regression with CONFIG_KALLSYMS=n: <-- snip --> ... CC arch/m32r/kernel/traps.o In file included from /home/bunk/linux/kernel-2.6/linux-2.6.22-rc6-mm1/arch/m32r/kernel/traps.c:14: /home/bunk/linux/kernel-2.6/linux-2.6.22-rc6-mm1/include/linux/kallsyms.h: In function 'lookup_symbol_name': /home/bunk/linux/kernel-2.6/linux-2.6.22-rc6-mm1/include/linux/kallsyms.h:66: error: 'ERANGE' undeclared (first use in this function) /home/bunk/linux/kernel-2.6/linux-2.6.22-rc6-mm1/include/linux/kallsyms.h:66: error: (Each undeclared identifier is reported only once /home/bunk/linux/kernel-2.6/linux-2.6.22-rc6-mm1/include/linux/kallsyms.h:66: error: for each function it appears in.) /home/bunk/linux/kernel-2.6/linux-2.6.22-rc6-mm1/include/linux/kallsyms.h: In function 'lookup_symbol_attrs': /home/bunk/linux/kernel-2.6/linux-2.6.22-rc6-mm1/include/linux/kallsyms.h:71: error: 'ERANGE' undeclared (first use in this function) make[2]: *** [arch/m32r/kernel/traps.o] Error 1 <-- snip --> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
118 lines
3.2 KiB
C
118 lines
3.2 KiB
C
/* 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>
|
|
|
|
#define KSYM_NAME_LEN 127
|
|
#define KSYM_SYMBOL_LEN (sizeof("%s+%#lx/%#lx [%s]") + KSYM_NAME_LEN + \
|
|
2*(BITS_PER_LONG*3/10) + MODULE_NAME_LEN + 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, ...)
|
|
{
|
|
}
|
|
/* 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*/
|