arch/powerpc/include/asm/sections.h

   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 */