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Diffstat (limited to 'coregrind/.svn/text-base/pub_core_redir.h.svn-base')
-rw-r--r-- | coregrind/.svn/text-base/pub_core_redir.h.svn-base | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/coregrind/.svn/text-base/pub_core_redir.h.svn-base b/coregrind/.svn/text-base/pub_core_redir.h.svn-base new file mode 100644 index 0000000..c993c27 --- /dev/null +++ b/coregrind/.svn/text-base/pub_core_redir.h.svn-base @@ -0,0 +1,125 @@ + +/*--------------------------------------------------------------------*/ +/*--- Function replacement and wrapping. pub_core_redir.h ---*/ +/*--------------------------------------------------------------------*/ + +/* + This file is part of Valgrind, a dynamic binary instrumentation + framework. + + Copyright (C) 2000-2009 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 replacement: intercepting calls to client functions, and +// pointing them to a different piece of code. +// - loading notification: telling the core where certain client-space +// functions are when they get loaded. +// - function wrapping: add calls to code before and after client +// functions execute, for inspection and/or modification. +//-------------------------------------------------------------------- + +#include "pub_tool_redir.h" + + +//-------------------------------------------------------------------- +// Notifications - by which we are told of state changes +//-------------------------------------------------------------------- + +/* Notify the module of a new DebugInfo (called from m_debuginfo). */ +extern void VG_(redir_notify_new_DebugInfo)( DebugInfo* ); + +/* Notify the module of the disappearance of a DebugInfo (also called + from m_debuginfo). */ +extern void VG_(redir_notify_delete_DebugInfo)( DebugInfo* ); + +/* Initialise the module, and load initial "hardwired" redirects. */ +extern void VG_(redir_initialise)( void ); + + +//-------------------------------------------------------------------- +// Queries +//-------------------------------------------------------------------- + +/* This is the crucial redirection function. It answers the question: + should this code address be redirected somewhere else? It's used + just before translating a basic block. If a redir is found, + *isWrap allows to distinguish wrap- from replace- style + redirections. */ +extern Addr VG_(redir_do_lookup) ( Addr orig, Bool* isWrap ); + + +//-------------------------------------------------------------------- +// Loading notification +//-------------------------------------------------------------------- + +/* Functions named with this macro have the property that the core will + be told what their address is when they are loaded. This can be useful + if the core wants to call them at some point, and so needs to know their + address. This is a weaker but more general mechanism than code + replacement. + + Functions named with this macro should be in client space, ie. in + vgpreload_<tool>.h or vgpreload_core.h. */ + +#define VG_NOTIFY_ON_LOAD(name) _vgnU_##name +#define VG_NOTIFY_ON_LOAD_PREFIX "_vgnU_" +#define VG_NOTIFY_ON_LOAD_PREFIX_LEN 6 + + +//-------------------------------------------------------------------- +// Function wrapping +//-------------------------------------------------------------------- + +// This is currently not working(?) --njn + +/* 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 ---*/ +/*--------------------------------------------------------------------*/ |