gdb/config/tm-sysv4.h

   1 /* Macro definitions for GDB on all SVR4 target systems.
   2    Copyright 1991, 1992, 1993, 1994, 1996, 1997, 2000
   3    Free Software Foundation, Inc.
   4    Written by Fred Fish at Cygnus Support (fnf@cygnus.com).
   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 /* For SVR4 shared libraries, each call to a library routine goes through
  24    a small piece of trampoline code in the ".plt" section.
  25    The horribly ugly wait_for_inferior() routine uses this macro to detect
  26    when we have stepped into one of these fragments.
  27    We do not use lookup_solib_trampoline_symbol_by_pc, because
  28    we cannot always find the shared library trampoline symbols
  29    (e.g. on Irix5).  */
  30
  31 #define IN_SOLIB_CALL_TRAMPOLINE(pc, name) in_plt_section((pc), (name))
  32 extern int in_plt_section (CORE_ADDR, char *);
  33
  34 /* If PC is in a shared library trampoline code, return the PC
  35    where the function itself actually starts.  If not, return 0.  */
  36
  37 #define SKIP_TRAMPOLINE_CODE(pc)  find_solib_trampoline_target (pc)
  38
  39 /* It is unknown which, if any, SVR4 assemblers do not accept dollar signs
  40    in identifiers.  The default in G++ is to use dots instead, for all SVR4
  41    systems, so we make that our default also.  FIXME: There should be some
  42    way to get G++ to tell us what CPLUS_MARKER it is using, perhaps by
  43    stashing it in the debugging information as part of the name of an
  44    invented symbol ("gcc_cplus_marker$" for example). */
  45
  46 #undef CPLUS_MARKER
  47 #define CPLUS_MARKER '.'