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/*---------------------------------------------------------------*/
/*--- begin ir_match.h ---*/
/*---------------------------------------------------------------*/
/*
This file is part of Valgrind, a dynamic binary instrumentation
framework.
Copyright (C) 2004-2011 OpenWorks LLP
info@open-works.net
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., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
The GNU General Public License is contained in the file COPYING.
Neither the names of the U.S. Department of Energy nor the
University of California nor the names of its contributors may be
used to endorse or promote products derived from this software
without prior written permission.
*/
/* Provides a facility for doing IR tree matching. */
#ifndef __VEX_IR_MATCH_H
#define __VEX_IR_MATCH_H
#include "libvex_basictypes.h"
#include "libvex_ir.h"
/* Patterns are simply IRExpr* trees, with IRExpr_Binder nodes at the
leaves, indicating binding points. Use these magic macros to
declare and define patterns. */
#define DECLARE_PATTERN(_patt) \
static IRExpr* _patt = NULL
#define DEFINE_PATTERN(_patt,_expr) \
do { \
if (!(_patt)) { \
vassert(vexGetAllocMode() == VexAllocModeTEMP); \
vexSetAllocMode(VexAllocModePERM); \
_patt = (_expr); \
vexSetAllocMode(VexAllocModeTEMP); \
vassert(vexGetAllocMode() == VexAllocModeTEMP); \
} \
} while (0)
/* This type returns the result of a match -- it records what
the binders got instantiated to. */
#define N_IRMATCH_BINDERS 4
typedef
struct {
IRExpr* bindee[N_IRMATCH_BINDERS];
}
MatchInfo;
/* The matching function. p is expected to have zero or more
IRExpr_Binds in it, numbered 0, 1, 2 ... Returns True if a match
succeeded. */
extern
Bool matchIRExpr ( MatchInfo* mi, IRExpr* p/*attern*/, IRExpr* e/*xpr*/ );
#endif /* ndef __VEX_IR_MATCH_H */
/*---------------------------------------------------------------*/
/*--- end ir_match.h ---*/
/*---------------------------------------------------------------*/