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