arch/h8300/include/asm/flat.h

   1 /*
   2  * arch/h8300/asm/include/flat.h -- uClinux flat-format executables
   3  */
   4
   5 #ifndef __H8300_FLAT_H__
   6 #define __H8300_FLAT_H__
   7
   8 #include <asm/unaligned.h>
   9
  10 #define flat_argvp_envp_on_stack()              1
  11 #define flat_old_ram_flag(flags)                1
  12 #define flat_reloc_valid(reloc, size)           ((reloc) <= (size))
  13 #define flat_set_persistent(relval, p)          0
  14
  15 /*
  16  * on the H8 a couple of the relocations have an instruction in the
  17  * top byte.  As there can only be 24bits of address space,  we just
  18  * always preserve that 8bits at the top,  when it isn't an instruction
  19  * is is 0 (davidm@snapgear.com)
  20  */
  21
  22 #define flat_get_relocate_addr(rel)             (rel & ~0x00000001)
  23 static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags,
  24                                         u32 *addr, u32 *persistent)
  25 {
  26         u32 val = get_unaligned((__force u32 *)rp);
  27         if (!(flags & FLAT_FLAG_GOTPIC))
  28                 val &= 0x00ffffff;
  29         *addr = val;
  30         return 0;
  31 }
  32
  33 static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel)
  34 {
  35         u32 *p = (__force u32 *)rp;
  36         put_unaligned((addr & 0x00ffffff) | (*(char *)p << 24), p);
  37         return 0;
  38 }
  39
  40 #endif /* __H8300_FLAT_H__ */