Subversion Repositories openrisc

/* extracted from gdb sources */

typedef unsigned long long CORE_ADDR;

struct blockvector;

struct symtab {

  struct blockvector *blockvector;

};

struct sec {

  void *unused;

};

struct symbol {

  int len;

  char *name;

};

struct block {

        CORE_ADDR startaddr, endaddr;

        struct symbol *function;

        struct block *superblock;

        unsigned char gcc_compile_flag;

        int nsyms;

        struct symbol syms[1];

};

struct blockvector {

        int nblocks;

        struct block *block[2];

};

struct blockvector *blockvector_for_pc_sect(register CORE_ADDR pc,

                                            struct symtab *symtab)

{

  register struct block *b;

  register int bot, top, half;

  struct blockvector *bl;

  bl = symtab->blockvector;

  b = bl->block[0];

  bot = 0;

  top = bl->nblocks;

  while (top - bot > 1)

    {

      half = (top - bot + 1) >> 1;

      b = bl->block[bot + half];

      if (b->startaddr <= pc)

        bot += half;

      else

        top = bot + half;

    }

  while (bot >= 0)

    {

      b = bl->block[bot];

      if (b->endaddr > pc)

        {

          return bl;

        }

      bot--;

    }

  return 0;

}

int main(void)

{

  struct block a = { 0, 0x10000, 0, 0, 1, 20 };

  struct block b = { 0x10000, 0x20000, 0, 0, 1, 20 };

  struct blockvector bv = { 2, { &a, &b } };

  struct symtab s = { &bv };

  struct blockvector *ret;

  ret = blockvector_for_pc_sect(0x500, &s);

  return 0;

}