1 files changed, 45 insertions, 0 deletions
diff --git a/gdb/config/tm-sysv4.h b/gdb/config/tm-sysv4.h
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+++ b/gdb/config/tm-sysv4.h
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+/* Macro definitions for GDB on all SVR4 target systems.
+   Copyright 1991, 1992, 1993 Free Software Foundation, Inc.
+   Written by Fred Fish at Cygnus Support (fnf@cygnus.com).
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include "solib.h"	/* Support for shared libraries. */
+
+/* For SVR4 shared libraries, each call to a library routine goes through
+   a small piece of trampoline code in the ".init" section.  Although each
+   of these fragments is labeled with the name of the routine being called,
+   the gdb symbol reading code deliberately ignores them so it won't confuse
+   them with the real functions.  It does however know about the label that
+   precedes all of the fragments, which is "_init".  Thus when we lookup a
+   function that corresponds to a PC value which is in one of the trampoline
+   fragments, we'll appear to be in the function "_init".  The following
+   macro will evaluate to nonzero when NAME is valid and matches "_init".
+   The horribly ugly wait_for_inferior() routine uses this macro to detect
+   when we have stepped into one of these fragments. */
+
+#define IN_SOLIB_TRAMPOLINE(pc,name) ((name) && (STREQ ("_init", name)))
+
+/* It is unknown which, if any, SVR4 assemblers do not accept dollar signs
+   in identifiers.  The default in G++ is to use dots instead, for all SVR4
+   systems, so we make that our default also.  FIXME: There should be some
+   way to get G++ to tell us what CPLUS_MARKER it is using, perhaps by
+   stashing it in the debugging information as part of the name of an
+   invented symbol ("gcc_cplus_marker$" for example). */
+
+#undef CPLUS_MARKER
+#define CPLUS_MARKER '.'