gdb/config/tm-sysv4.h

   1 /* Macro definitions for GDB on all SVR4 target systems.
   2    Copyright 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
   3    Written by Fred Fish at Cygnus Support (fnf@cygnus.com).
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 /* For SVR4 shared libraries, each call to a library routine goes through
  23    a small piece of trampoline code in the ".plt" section.
  24    The horribly ugly wait_for_inferior() routine uses this macro to detect
  25    when we have stepped into one of these fragments.
  26    We do not use lookup_solib_trampoline_symbol_by_pc, because
  27    we cannot always find the shared library trampoline symbols
  28    (e.g. on Irix5).  */
  29
  30 #define IN_SOLIB_CALL_TRAMPOLINE(pc, name) in_plt_section((pc), (name))
  31 extern int in_plt_section PARAMS ((CORE_ADDR, char *));
  32
  33 /* If PC is in a shared library trampoline code, return the PC
  34    where the function itself actually starts.  If not, return 0.  */
  35
  36 #define SKIP_TRAMPOLINE_CODE(pc)  find_solib_trampoline_target (pc)
  37
  38 /* It is unknown which, if any, SVR4 assemblers do not accept dollar signs
  39    in identifiers.  The default in G++ is to use dots instead, for all SVR4
  40    systems, so we make that our default also.  FIXME: There should be some
  41    way to get G++ to tell us what CPLUS_MARKER it is using, perhaps by
  42    stashing it in the debugging information as part of the name of an
  43    invented symbol ("gcc_cplus_marker$" for example). */
  44
  45 #undef CPLUS_MARKER
  46 #define CPLUS_MARKER '.'