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

   1 /* Copyright 2013-2021 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   struct library *lib;
  42   char *text_addr = NULL;
  43   int (*pbar) () = NULL;
  44   int (*pfoo) (int) = NULL;
  45   int (*pbaz) () = NULL;
  46   int i;
  47
  48   lib = load_shlib (file);
  49   if (lib == NULL)
  50     return 1;
  51
  52   if (get_text_addr (lib,  (void **) &text_addr) != 0)
  53     return 1;
  54
  55   gdb_add_symbol_file (text_addr, file);
  56
  57   /* Call bar from SHLIB_NAME.  */
  58   if (lookup_function (lib, "bar", (void *) &pbar) != 0)
  59     return 1;
  60
  61   (*pbar) ();
  62
  63   /* Call foo from SHLIB_NAME.  */
  64   if (lookup_function (lib, "foo", (void *) &pfoo) != 0)
  65     return 1;
  66
  67   (*pfoo) (2);
  68
  69   /* Unload the library, invalidating all memory breakpoints.  */
  70   unload_shlib (lib);
  71
  72   /* Notify GDB to remove the symbol file.  Also check that GDB
  73      doesn't complain that it can't remove breakpoints from the
  74      unmapped library.  */
  75   gdb_remove_symbol_file (text_addr);
  76
  77   /* Reload the library.  */
  78   lib = load_shlib (file); /* reload lib here */
  79   if (lib == NULL)
  80     return 1;
  81
  82   if (get_text_addr (lib,  (void **) &text_addr) != 0)
  83     return 1;
  84
  85   gdb_add_symbol_file (text_addr, file);
  86
  87   if (lookup_function (lib, "baz", (void *) &pbaz) != 0)
  88     return 1;
  89
  90   (*pbaz) ();
  91
  92   return 0; /* end here */
  93 }