1 #ifndef _ASM_POWERPC_SECTIONS_H
2 #define _ASM_POWERPC_SECTIONS_H
3 #ifdef __KERNEL__
4 
5 #include <linux/elf.h>
6 #include <linux/uaccess.h>
7 #include <asm-generic/sections.h>
8 
9 #ifdef __powerpc64__
10 
11 extern char _end[];
12 
13 static inline int in_kernel_text(unsigned long addr)
14 {
15 	if (addr >= (unsigned long)_stext && addr < (unsigned long)__init_end)
16 		return 1;
17 
18 	return 0;
19 }
20 
21 static inline int overlaps_kernel_text(unsigned long start, unsigned long end)
22 {
23 	return start < (unsigned long)__init_end &&
24 		(unsigned long)_stext < end;
25 }
26 
27 #undef dereference_function_descriptor
28 static inline void *dereference_function_descriptor(void *ptr)
29 {
30 	struct ppc64_opd_entry *desc = ptr;
31 	void *p;
32 
33 	if (!probe_kernel_address(&desc->funcaddr, p))
34 		ptr = p;
35 	return ptr;
36 }
37 
38 #endif
39 
40 #endif /* __KERNEL__ */
41 #endif	/* _ASM_POWERPC_SECTIONS_H */
42