5.2 released.

[deliverable/binutils-gdb.git] / gdb / config / tm-sysv4.h

diff --git a/gdb/config/tm-sysv4.h b/gdb/config/tm-sysv4.h
index 18c88efa29b93e842aabaffac523357bab0dd0b1..35b95eb71f8927285ca3233e6af4a36d7ff24ef2 100644 (file)
--- a/gdb/config/tm-sysv4.h
+++ b/gdb/config/tm-sysv4.h
@@ -1,36 +1,40 @@
 /* Macro definitions for GDB on all SVR4 target systems.
-   Copyright 1991, 1992, 1993 Free Software Foundation, Inc.
+   Copyright 1991, 1992, 1993, 1994, 1996, 1997, 2000
+   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.  */
+   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_TRAMPOLINE(pc,name) ((name) && (STREQ ("_init", name)))
+#define IN_SOLIB_CALL_TRAMPOLINE(pc, name) in_plt_section((pc), (name))
+extern int in_plt_section (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 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