/* Macro definitions for GDB on all SVR4 target systems.
- Copyright 1991, 1992, 1993 Free Software Foundation, Inc.
+ Copyright 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
Written by Fred Fish at Cygnus Support (fnf@cygnus.com).
-This file is part of GDB.
+ 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 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.
+ 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. */
+ 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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
/* 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".
+ a small piece of trampoline code in the ".plt" section.
The horribly ugly wait_for_inferior() routine uses this macro to detect
- when we have stepped into one of these fragments. */
+ when we have stepped into one of these fragments.
+ We do not use lookup_solib_trampoline_symbol_by_pc, because
+ we cannot always find the shared library trampoline symbols
+ (e.g. on Irix5). */
+
+#define IN_SOLIB_CALL_TRAMPOLINE(pc, name) in_plt_section((pc), (name))
+extern int in_plt_section PARAMS ((CORE_ADDR, char *));
+
+/* If PC is in a shared library trampoline code, return the PC
+ where the function itself actually starts. If not, return 0. */
-#define IN_SOLIB_TRAMPOLINE(pc,name) ((name) && (STREQ ("_init", name)))
+#define SKIP_TRAMPOLINE_CODE(pc) find_solib_trampoline_target (pc)
/* 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