X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Ftv%2Ftv_t.h;h=a8098682719afb67b1c37e5364a51ed29b6b3ee4;hb=a10a4d1083b97c65a7fd6ee0fff8c075fa8c4ea3;hp=6400829d85fc3af89a60d44b623a275ad9004eb8;hpb=6023590e8c7b401803f9b805886277de002efa19;p=libfirm

diff --git a/ir/tv/tv_t.h b/ir/tv/tv_t.h
index 6400829d8..a80986827 100644
--- a/ir/tv/tv_t.h
+++ b/ir/tv/tv_t.h
@@ -1,37 +1,144 @@
-/* Declarations for Target Values.
-   Copyright (C) 1995, 1996 Christian von Roques */
+/*
+ * Copyright (C) 1995-2011 University of Karlsruhe.  All right reserved.
+ *
+ * This file is part of libFirm.
+ *
+ * This file may be distributed and/or modified under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation and appearing in the file LICENSE.GPL included in the
+ * packaging of this file.
+ *
+ * Licensees holding valid libFirm Professional Edition licenses may use
+ * this file in accordance with the libFirm Commercial License.
+ * Agreement provided with the Software.
+ *
+ * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+ * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE.
+ */
 
 /**
-* @file tv_t.h
-*
-* @author Christian von Roques
-*/
+ * @file
+ * @brief    Representation of and static computations on target machine
+ *           values -- private header.
+ * @date     2003
+ * @author   Mathias Heil
+ */
+#ifndef FIRM_TV_TV_T_H
+#define FIRM_TV_TV_T_H
 
-/* $Id$ */
+#include "firm_common.h"
 
-#ifndef _TV_T_H_
-#define _TV_T_H_
+#include <assert.h>
+#include "irmode.h"
+#include "tv.h"
 
-# include "tv.h"
-# include "misc.h"
+/** Debugging aid for the firmEvaluator: Marks for reserved tarvals values. */
+enum reserved_id {
+	resid_tarval_bad         = 1,  /**< tarval_bad marker. */
+	resid_tarval_undefined   = 2,  /**< tarval_undefined marker. */
+	resid_tarval_b_false     = 3,  /**< tarval_b_false marker. */
+	resid_tarval_b_true      = 4,  /**< tarval_b_true marker. */
+	resid_tarval_unreachable = 5,  /**< tarval_unreachable marker. */
+	resid_tarval_reachable   = 6   /**< tarval_reachable marker. */
+};
 
-int tarval_print (XP_PAR1, const xprintf_info *, XP_PARN);
+/**
+ * Initialization of the tarval module.
+ *
+ * Call before init_mode().
+ *
+ * @param null_value
+ *            The reference mode NULL value, typical 0l
+ * @param support_quad_precision
+ *            If non-zero, activate support for quad precision
+ */
+void init_tarval_1(long null_value, int support_quad_precision);
+
+/**
+ * Initialization of the tarval module.
+ *
+ * Call after init_mode().
+ */
+void init_tarval_2(void);
+
+/**
+ * Free all memory occupied by the tarval module.
+ */
+void finish_tarval(void);
+
+/**
+ * This struct represents the afore mentioned tarvals.
+ *
+ * A tarval struct consists of an internal representation of the
+ * value and some additional fields further describing the value.
+ *
+ * ATTRIBUTES:
+ *   - ir_mode *mode     The mode of the stored value
+ *   - void *value       The internal representation
+ *
+ * @sa
+ *   irmode.h for predefined modes
+ */
+struct ir_tarval {
+	firm_kind  kind;    /**< must be k_tarval */
+	ir_mode    *mode;   /**< the mode of the stored value */
+	const void *value;  /**< the value stored in an internal way... */
+	size_t     length;  /**< the length of the stored value */
+};
+
+/* inline functions */
+/*
+ * Access routines for tarval fields ========================================
+ */
+static inline ir_mode *_get_tarval_mode(const ir_tarval *tv)
+{
+	assert(tv);
+	return tv->mode;
+}
+
+static inline ir_tarval *_get_tarval_bad(void)
+{
+	return tarval_bad;
+}
+
+static inline ir_tarval *_get_tarval_undefined(void)
+{
+	return tarval_undefined;
+}
+
+static inline ir_tarval *_get_tarval_b_false(void)
+{
+	return tarval_b_false;
+}
+
+static inline ir_tarval *_get_tarval_b_true(void)
+{
+	return tarval_b_true;
+}
 
-/** Hash function on tarvals */
-unsigned tarval_hash (tarval *);
+static inline ir_tarval *_get_tarval_reachable(void)
+{
+	return tarval_reachable;
+}
 
+static inline ir_tarval *_get_tarval_unreachable(void)
+{
+	return tarval_unreachable;
+}
 
-#ifdef NDEBUG
-#define TARVAL_VRFY(val) ((void)0)
-#else
-#define TARVAL_VRFY(val) _tarval_vrfy ((val))
-extern void _tarval_vrfy (const tarval *);
-#endif
+static inline int _is_tarval(const void *thing)
+{
+	return get_kind(thing) == k_tarval;
+}
 
-#ifdef STATS
-void tarval_stats (void);
-#else
-#define tarval_stats() ((void)0)
-#endif
+#define get_tarval_mode(tv)      _get_tarval_mode(tv)
+#define get_tarval_bad()         _get_tarval_bad()
+#define get_tarval_undefined()   _get_tarval_undefined()
+#define get_tarval_b_false()     _get_tarval_b_false()
+#define get_tarval_b_true()      _get_tarval_b_true()
+#define get_tarval_unreachable() _get_tarval_unreachable()
+#define get_tarval_reachable()   _get_tarval_reachable()
+#define is_tarval(thing)         _is_tarval(thing)
 
-#endif /* _TV_T_H_ */
+#endif /* FIRM_TV_TV_T_H */