From: Nicholas Nethercote <njn@valgrind.org>
Date: Sun, 29 May 2005 17:03:54 +0000 (+0000)
Subject: Forgot to add pub_core_redir.h when committing the m_redir module.
X-Git-Tag: svn/VALGRIND_3_0_0~509
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=9e04a092a2c7036bd43a296aca0fe9e61122285a;p=thirdparty%2Fvalgrind.git

Forgot to add pub_core_redir.h when committing the m_redir module.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@3809
---

diff --git a/coregrind/pub_core_redir.h b/coregrind/pub_core_redir.h
new file mode 100644
index 0000000000..cf2ad7dd60
--- /dev/null
+++ b/coregrind/pub_core_redir.h
@@ -0,0 +1,83 @@
+
+/*--------------------------------------------------------------------*/
+/*--- Code redirections.                          pub_core_redir.h ---*/
+/*--------------------------------------------------------------------*/
+
+/*
+   This file is part of Valgrind, a dynamic binary instrumentation
+   framework.
+
+   Copyright (C) 2000-2005 Julian Seward
+      jseward@acm.org
+
+   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., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307, USA.
+
+   The GNU General Public License is contained in the file COPYING.
+*/
+
+#ifndef __PUB_CORE_REDIR_H
+#define __PUB_CORE_REDIR_H
+
+//--------------------------------------------------------------------
+// PURPOSE: This module deals with:
+// - code redirection: intercepting calls to client functions, and
+//   pointing them to a different piece of code.
+// - function wrapping: add calls to code before and after client
+//   functions execute, for inspection and/or modification.
+//
+// Nb: It's possible that this should be two modules.
+//--------------------------------------------------------------------
+
+/* Redirection machinery */
+extern Addr VG_(code_redirect) ( Addr orig );
+
+/* Set up some default redirects */
+extern void VG_(setup_code_redirect_table) ( void );
+
+extern void VG_(add_redirect_sym_to_addr)(const Char *from_lib,
+					  const Char *from_sym,
+					  Addr to_addr);
+extern void VG_(add_redirect_addr_to_addr)(Addr from_addr, Addr to_addr);
+extern void VG_(resolve_seg_redirs)(SegInfo *si);
+
+/* Wrapping machinery */
+enum return_type {
+   RT_RETURN,
+   RT_LONGJMP,
+   RT_EXIT,
+};
+
+typedef struct _FuncWrapper FuncWrapper;
+struct _FuncWrapper {
+   void *(*before)(va_list args);
+   void  (*after) (void *nonce, enum return_type, Word retval);
+};
+
+extern void VG_(wrap_function)(Addr eip, const FuncWrapper *wrapper);
+extern const FuncWrapper *VG_(is_wrapped)(Addr eip);
+extern Bool VG_(is_wrapper_return)(Addr eip);
+
+/* Primary interface for adding wrappers for client-side functions. */
+extern CodeRedirect *VG_(add_wrapper)(const Char *from_lib, const Char *from_sym,
+				      const FuncWrapper *wrapper);
+
+extern Bool VG_(is_resolved)(const CodeRedirect *redir);
+
+#endif   // __PUB_CORE_REDIR_H
+
+/*--------------------------------------------------------------------*/
+/*--- end                                                          ---*/
+/*--------------------------------------------------------------------*/