1  #define NULL (void *)0
       2  
       3  struct block
       4  {
       5    void *function;
       6    const struct block *superblock;
       7  };
       8  
       9  struct global_block
      10  {
      11    struct block block;
      12    void *compunit_symtab;
      13  };
      14  
      15  extern const struct block *block_global_block (const struct block *block);
      16  
      17  void *
      18  block_objfile (const struct block *block)
      19  {
      20    const struct global_block *global_block;
      21  
      22    if (block->function != NULL)
      23      return block->function;
      24  
      25    global_block = (struct global_block *) block_global_block (block);
      26    return global_block->compunit_symtab;
      27  }
      28  
      29  const struct block *
      30  block_global_block (const struct block *block)
      31  {
      32    if (block == NULL)
      33      return NULL;
      34  
      35    while (block->superblock != NULL)
      36      block = block->superblock;
      37  
      38    return block;
      39  }