1/* Copyright (C) 2002, 2005 Red Hat, Inc.
2   This file is part of Red Hat elfutils.
3   Written by Ulrich Drepper <drepper@redhat.com>, 2002.
4
5   Red Hat elfutils is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License as published by the
7   Free Software Foundation; version 2 of the License.
8
9   Red Hat elfutils is distributed in the hope that it will be useful, but
10   WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   General Public License for more details.
13
14   You should have received a copy of the GNU General Public License along
15   with Red Hat elfutils; if not, write to the Free Software Foundation,
16   Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.
17
18   Red Hat elfutils is an included package of the Open Invention Network.
19   An included package of the Open Invention Network is a package for which
20   Open Invention Network licensees cross-license their patents.  No patent
21   license is granted, either expressly or impliedly, by designation as an
22   included package.  Should you wish to participate in the Open Invention
23   Network licensing program, please visit www.openinventionnetwork.com
24   <http://www.openinventionnetwork.com>.  */
25
26#ifdef HAVE_CONFIG_H
27# include <config.h>
28#endif
29
30#include <fcntl.h>
31#include <inttypes.h>
32#include ELFUTILS_HEADER(asm)
33#include <libelf.h>
34#include <stdio.h>
35#include <unistd.h>
36
37
38static const char fname[] = "asm-tst8-out.o";
39
40
41int
42main (void)
43{
44  int result = 0;
45  size_t cnt;
46  AsmCtx_t *ctx;
47  Elf *elf;
48  int fd;
49
50  elf_version (EV_CURRENT);
51
52  Ebl *ebl = ebl_openbackend_machine (EM_386);
53  if (ebl == NULL)
54    {
55      puts ("cannot open backend library");
56      return 1;
57    }
58
59  ctx = asm_begin (fname, ebl, false);
60  if (ctx == NULL)
61    {
62      printf ("cannot create assembler context: %s\n", asm_errmsg (-1));
63      return 1;
64    }
65
66  if (asm_newabssym (ctx, "tst8-out.s", 4, 0xfeedbeef, STT_FILE, STB_LOCAL)
67      == NULL)
68    {
69      printf ("cannot create absolute symbol: %s\n", asm_errmsg (-1));
70      asm_abort (ctx);
71      return 1;
72    }
73
74  /* Create the output file.  */
75  if (asm_end (ctx) != 0)
76    {
77      printf ("cannot create output file: %s\n", asm_errmsg (-1));
78      asm_abort (ctx);
79      return 1;
80    }
81
82  /* Check the file.  */
83  fd = open (fname, O_RDONLY);
84  if (fd == -1)
85    {
86      printf ("cannot open generated file: %m\n");
87      result = 1;
88      goto out;
89    }
90
91  elf = elf_begin (fd, ELF_C_READ, NULL);
92  if (elf == NULL)
93    {
94      printf ("cannot create ELF descriptor: %s\n", elf_errmsg (-1));
95      result = 1;
96      goto out_close;
97    }
98  if (elf_kind (elf) != ELF_K_ELF)
99    {
100      puts ("not a valid ELF file");
101      result = 1;
102      goto out_close2;
103    }
104
105  for (cnt = 1; 1; ++cnt)
106    {
107      Elf_Scn *scn;
108      GElf_Shdr shdr_mem;
109      GElf_Shdr *shdr;
110
111      scn = elf_getscn (elf, cnt);
112      if (scn == NULL)
113	{
114	  printf ("cannot get section %Zd: %s\n", cnt, elf_errmsg (-1));
115	  result = 1;
116	  continue;
117	}
118
119      shdr = gelf_getshdr (scn, &shdr_mem);
120      if (shdr == NULL)
121	{
122	  printf ("cannot get section header for section %Zd: %s\n",
123		  cnt, elf_errmsg (-1));
124	  result = 1;
125	  continue;
126	}
127      /* We are looking for the symbol table.  */
128      if (shdr->sh_type != SHT_SYMTAB)
129	continue;
130
131      for (cnt = 1; cnt< (shdr->sh_size
132			  / gelf_fsize (elf, ELF_T_SYM, 1, EV_CURRENT));
133	   ++cnt)
134	{
135	  GElf_Sym sym_mem;
136	  GElf_Sym *sym;
137
138	  if (cnt > 1)
139	    {
140	      puts ("too many symbol");
141	      result = 1;
142	      break;
143	    }
144
145	  sym = gelf_getsym (elf_getdata (scn, NULL), cnt, &sym_mem);
146	  if (sym == NULL)
147	    {
148	      printf ("cannot get symbol %zu: %s\n", cnt, elf_errmsg (-1));
149	      result = 1;
150	    }
151	  else
152	    {
153	      if (sym->st_shndx != SHN_ABS)
154		{
155		  printf ("expected common symbol, got section %u\n",
156			  (unsigned int) sym->st_shndx);
157		  result = 1;
158		}
159
160	      if (sym->st_value != 0xfeedbeef)
161		{
162		  printf ("requested value 0xfeedbeef, is %#" PRIxMAX "\n",
163			  (uintmax_t) sym->st_value);
164		  result = 1;
165		}
166
167	      if (sym->st_size != 4)
168		{
169		  printf ("requested size 4, is %" PRIuMAX "\n",
170			  (uintmax_t) sym->st_value);
171		  result = 1;
172		}
173
174	      if (GELF_ST_TYPE (sym->st_info) != STT_FILE)
175		{
176		  printf ("requested type FILE, is %u\n",
177			  (unsigned int) GELF_ST_TYPE (sym->st_info));
178		  result = 1;
179		}
180	    }
181	}
182
183      break;
184    }
185
186 out_close2:
187  elf_end (elf);
188 out_close:
189  close (fd);
190 out:
191  /* We don't need the file anymore.  */
192  unlink (fname);
193
194  ebl_closebackend (ebl);
195
196  return result;
197}
198