/* Copyright (C) 2002, 2005 Red Hat, Inc.

   This file is part of elfutils.

   Written by Ulrich Drepper <drepper@redhat.com>, 2002.

   This file is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   elfutils is distributed in the hope that it will be useful, but

   WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#ifdef HAVE_CONFIG_H

# include <config.h>

#endif

#include <fcntl.h>

#include <inttypes.h>

#include ELFUTILS_HEADER(asm)

#include <libelf.h>

#include <stdio.h>

#include <unistd.h>

static const char fname[] = "asm-tst7-out.o";

int

main (void)

{

  int result = 0;

  size_t cnt;

  AsmCtx_t *ctx;

  Elf *elf;

  int fd;

  elf_version (EV_CURRENT);

  Ebl *ebl = ebl_openbackend_machine (EM_386);

  if (ebl == NULL)

    {

      puts ("cannot open backend library");

      return 1;

    }

  ctx = asm_begin (fname, ebl, false);

  if (ctx == NULL)

    {

      printf ("cannot create assembler context: %s\n", asm_errmsg (-1));

      return 1;

    }

  if (asm_newcomsym (ctx, "commsym", 4, 16) == NULL)

    {

      printf ("cannot create common symbol: %s\n", asm_errmsg (-1));

      asm_abort (ctx);

      return 1;

    }

  /* Create the output file.  */

  if (asm_end (ctx) != 0)

    {

      printf ("cannot create output file: %s\n", asm_errmsg (-1));

      asm_abort (ctx);

      return 1;

    }

  /* Check the file.  */

  fd = open (fname, O_RDONLY);

  if (fd == -1)

    {

      printf ("cannot open generated file: %m\n");

      result = 1;

      goto out;

    }

  elf = elf_begin (fd, ELF_C_READ, NULL);

  if (elf == NULL)

    {

      printf ("cannot create ELF descriptor: %s\n", elf_errmsg (-1));

      result = 1;

      goto out_close;

    }

  if (elf_kind (elf) != ELF_K_ELF)

    {

      puts ("not a valid ELF file");

      result = 1;

      goto out_close2;

    }

  for (cnt = 1; 1; ++cnt)

    {

      Elf_Scn *scn;

      GElf_Shdr shdr_mem;

      GElf_Shdr *shdr;

      scn = elf_getscn (elf, cnt);

      if (scn == NULL)

	{

	  printf ("cannot get section %zd: %s\n", cnt, elf_errmsg (-1));

	  result = 1;

	  continue;

	}

      shdr = gelf_getshdr (scn, &shdr_mem);

      if (shdr == NULL)

	{

	  printf ("cannot get section header for section %zd: %s\n",

		  cnt, elf_errmsg (-1));

	  result = 1;

	  continue;

	}

      /* We are looking for the symbol table.  */

      if (shdr->sh_type != SHT_SYMTAB)

	continue;

      for (cnt = 1; cnt< (shdr->sh_size

			  / gelf_fsize (elf, ELF_T_SYM, 1, EV_CURRENT));

	   ++cnt)

	{

	  GElf_Sym sym_mem;

	  GElf_Sym *sym;

	  if (cnt > 1)

	    {

	      puts ("too many symbol");

	      result = 1;

	      break;

	    }

	  sym = gelf_getsym (elf_getdata (scn, NULL), cnt, &sym_mem);

	  if (sym == NULL)

	    {

	      printf ("cannot get symbol %zu: %s\n", cnt, elf_errmsg (-1));

	      result = 1;

	    }

	  else

	    {

	      if (sym->st_shndx != SHN_COMMON)

		{

		  printf ("expected common symbol, got section %u\n",

			  (unsigned int) sym->st_shndx);

		  result = 1;

		}

	      if (sym->st_value != 16)

		{

		  printf ("requested alignment 16, is %" PRIuMAX "\n",

			  (uintmax_t) sym->st_value);

		  result = 1;

		}

	      if (sym->st_size != 4)

		{

		  printf ("requested size 4, is %" PRIuMAX "\n",

			  (uintmax_t) sym->st_value);

		  result = 1;

		}

	    }

	}

      break;

    }

 out_close2:

  elf_end (elf);

 out_close:

  close (fd);

 out:

  /* We don't need the file anymore.  */

  unlink (fname);

  ebl_closebackend (ebl);

  return result;

}