arch/m68k/include/asm/flat.h

   1 /*
   2  * flat.h -- uClinux flat-format executables
   3  */
   4
   5 #ifndef __M68KNOMMU_FLAT_H__
   6 #define __M68KNOMMU_FLAT_H__
   7
   8 #include <linux/uaccess.h>
   9
  10 #define flat_argvp_envp_on_stack()              1
  11 #define flat_old_ram_flag(flags)                (flags)
  12 #define flat_reloc_valid(reloc, size)           ((reloc) <= (size))
  13 static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags,
  14                                         u32 *addr, u32 *persistent)
  15 {
  16 #ifdef CONFIG_CPU_HAS_NO_UNALIGNED
  17         return copy_from_user(addr, rp, 4) ? -EFAULT : 0;
  18 #else
  19         return get_user(*addr, rp);
  20 #endif
  21 }
  22
  23 static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel)
  24 {
  25 #ifdef CONFIG_CPU_HAS_NO_UNALIGNED
  26         return copy_to_user(rp, &addr, 4) ? -EFAULT : 0;
  27 #else
  28         return put_user(addr, rp);
  29 #endif
  30 }
  31 #define flat_get_relocate_addr(rel)             (rel)
  32
  33 static inline int flat_set_persistent(u32 relval, u32 *persistent)
  34 {
  35         return 0;
  36 }
  37
  38 #define FLAT_PLAT_INIT(regs) \
  39         do { \
  40                 if (current->mm) \
  41                         (regs)->d5 = current->mm->start_data; \
  42         } while (0)
  43
  44 #endif /* __M68KNOMMU_FLAT_H__ */