gdb/solib.h

   1 /* Shared library declarations for GDB, the GNU Debugger.
   2
   3    Copyright 1992, 1993, 1995, 1998, 1999, 2000, 2001, 2003, 2005
   4    Free Software Foundation, Inc.
   5
   6    This file is part of GDB.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 59 Temple Place - Suite 330,
  21    Boston, MA 02111-1307, USA.  */
  22
  23 #ifndef SOLIB_H
  24 #define SOLIB_H
  25
  26 /* Forward decl's for prototypes */
  27 struct so_list;
  28 struct target_ops;
  29
  30 /* Called when we free all symtabs, to free the shared library information
  31    as well. */
  32
  33 #define CLEAR_SOLIB                     clear_solib
  34
  35 extern void clear_solib (void);
  36
  37 /* Called to add symbols from a shared library to gdb's symbol table. */
  38
  39 #define SOLIB_ADD(filename, from_tty, targ, readsyms) \
  40     solib_add (filename, from_tty, targ, readsyms)
  41
  42 extern void solib_add (char *, int, struct target_ops *, int);
  43 extern int solib_read_symbols (struct so_list *, int);
  44
  45 /* Function to be called when the inferior starts up, to discover the
  46    names of shared libraries that are dynamically linked, the base
  47    addresses to which they are linked, and sufficient information to
  48    read in their symbols at a later time.  */
  49
  50 #define SOLIB_CREATE_INFERIOR_HOOK(PID) solib_create_inferior_hook ()
  51
  52 /* Function to be called to remove the connection between debugger and
  53    dynamic linker that was established by SOLIB_CREATE_INFERIOR_HOOK.
  54    (This operation does not remove shared library information from
  55    the debugger, as CLEAR_SOLIB does.)
  56
  57    This functionality is presently not implemented for this target.
  58  */
  59 #define SOLIB_REMOVE_INFERIOR_HOOK(PID) (0)
  60
  61 extern void solib_create_inferior_hook (void);  /* solib.c */
  62
  63 /* This function returns TRUE if pc is the address of an instruction that
  64    lies within the dynamic linker (such as the event hook, or the dld
  65    itself).
  66
  67    This function must be used only when a dynamic linker event has been
  68    caught, and the inferior is being stepped out of the hook, or undefined
  69    results are guaranteed.
  70
  71    Presently, this functionality is not implemented.
  72  */
  73
  74 /*
  75    #define SOLIB_IN_DYNAMIC_LINKER(pid,pc) \
  76    error("catch of library loads/unloads not yet implemented on this platform")
  77  */
  78
  79 #define SOLIB_IN_DYNAMIC_LINKER(pid,pc) \
  80 (0)
  81
  82 /* This function must be called when the inferior is killed, and the program
  83    restarted.  This is not the same as CLEAR_SOLIB, in that it doesn't discard
  84    any symbol tables.
  85
  86    Presently, this functionality is not implemented.
  87  */
  88 #define SOLIB_RESTART() \
  89   (0)
  90
  91 /* If we can't set a breakpoint, and it's in a shared library, just
  92    disable it.  */
  93
  94 #define DISABLE_UNSETTABLE_BREAK(addr)  (solib_address(addr) != NULL)
  95
  96 extern char *solib_address (CORE_ADDR); /* solib.c */
  97
  98 /* If ADDR lies in a shared library, return its name.  */
  99
 100 #define PC_SOLIB(addr)  solib_address (addr)
 101
 102 /* Return 1 if PC lies in the dynamic symbol resolution code of the
 103    run time loader.  */
 104
 105 #define IN_SOLIB_DYNSYM_RESOLVE_CODE(pc) in_solib_dynsym_resolve_code (pc)
 106
 107 extern int in_solib_dynsym_resolve_code (CORE_ADDR);    /* solib.c */
 108
 109 /* Discard symbols that were auto-loaded from shared libraries. */
 110
 111 extern void no_shared_libraries (char *ignored, int from_tty);
 112
 113 #endif /* SOLIB_H */