gdb/testsuite/gdb.base/sym-file-main.c

   1 /* Copyright 2013 Free Software Foundation, Inc.
   2    This program is free software; you can redistribute it and/or modify
   3    it under the terms of the GNU General Public License as published by
   4    the Free Software Foundation; either version 3 of the License, or
   5    (at your option) any later version.
   6
   7    This program is distributed in the hope that it will be useful,
   8    but WITHOUT ANY WARRANTY; without even the implied warranty of
   9    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10    GNU General Public License for more details.
  11
  12    You should have received a copy of the GNU General Public License
  13    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  14 */
  15
  16 #include <stdlib.h>
  17 #include <stdio.h>
  18
  19 #include "sym-file-loader.h"
  20
  21 void
  22 gdb_add_symbol_file (void *addr, const char *file)
  23 {
  24   return;
  25 }
  26
  27 void
  28 gdb_remove_symbol_file (void *addr)
  29 {
  30   return;
  31 }
  32
  33 /* Load a shared library without relying on the standard
  34    loader to test GDB's commands for adding and removing
  35    symbol files at runtime.  */
  36
  37 int
  38 main (int argc, const char *argv[])
  39 {
  40   const char *file = SHLIB_NAME;
  41   Elf_External_Ehdr *ehdr = NULL;
  42   struct segment *head_seg = NULL;
  43   Elf_External_Shdr *text;
  44   char *text_addr = NULL;
  45   int (*pbar) () = NULL;
  46   int (*pfoo) (int) = NULL;
  47
  48   if (load_shlib (file, &ehdr, &head_seg) != 0)
  49     return -1;
  50
  51   /* Get the text section.  */
  52   text = find_shdr (ehdr, ".text");
  53   if (text == NULL)
  54     return -1;
  55
  56   /* Notify GDB to add the symbol file.  */
  57   if (translate_offset (GET (text, sh_offset), head_seg, (void **) &text_addr)
  58       != 0)
  59     return -1;
  60
  61   gdb_add_symbol_file (text_addr, file);
  62
  63   /* Call bar from SHLIB_NAME.  */
  64   if (lookup_function ("bar", ehdr, head_seg, (void *) &pbar) != 0)
  65     return -1;
  66
  67   (*pbar) ();
  68
  69   /* Call foo from SHLIB_NAME.  */
  70   if (lookup_function ("foo", ehdr, head_seg, (void *) &pfoo) != 0)
  71     return -1;
  72
  73   (*pfoo) (2);
  74
  75   /* Notify GDB to remove the symbol file.  */
  76   gdb_remove_symbol_file (text_addr);
  77
  78   return 0;
  79 }