/*
-** Copyright (C) 1998 - 2000 by Universitaet Karlsruhe
-** All rights reserved.
-**
-** Authors: Martin Trapp, Christian Schaefer,
-** Goetz Lindenmaier
-**
-** entity.h: entities represent all program known objects.
-**
-** An entity is the representation of program known objects in Firm.
-** The primary concept of entities is to represent members of complex
-** types, i.e., fields and methods of classes. As not all programming
-** language model all variables and methods as members of some class,
-** the concept of entities is extended to cover also local and global
-** variables, and arbitrary procedures.
-**
-** An entity always specifies the type of the object it represents and
-** the type of the object it is a part of, the owner of the entity.
-** Originally this is the type of the class of which the entity is a
-** member.
-** The owner of local variables is the procedure they are defined in.
-** The owner of global variables and procedures visible in the whole
-** program is a universally defined class type "GlobalType". The owner
-** of procedures defined in the scope of an other procedure is the
-** enclosing procedure.
-**
-*/
-
-/* $Id$ */
-
-# ifndef _ENTITY_T_H_
-# define _ENTITY_T_H_
-
-# include "entity.h"
-
-#ifndef _IR_GRAPH_TYPEDEF_
-#define _IR_GRAPH_TYPEDEF_
-/* to resolve recursion between entity.h and irgraph.h */
-typedef struct ir_graph ir_graph;
-#endif
-
-struct entity {
- firm_kind kind;
- ident *name; /* name of this entity */
- ident *ld_name; /* Unique name of this entity, i.e., the mangled
- name. E.g., for a class `A' with field `a' this
- is the ident for `A_a'. */
- type *type; /* The type of this entity, e.g., a method type, a
- basic type of the language or a class itself */
- type *owner; /* The class this entity belongs to. In case of local
- variables the method they are defined in. */
- entity **overwrites; /* A list of entities this entity overwrites. */
- ent_allocation allocation; /* Distinguishes static and dynamically allocated
- entities. */
- ent_visibility visibility; /* Specifies visibility to external program
- fragments */
- int offset; /* Offset in byte for this entity. Fixed when layout
- of owner is determined. */
- /* for methods */
- ir_graph *irg; /* If (type == method_type) this is the corresponding irg.
- The ir_graph constructor automatically sets this field.
- @@@ Does this go here, or should it be in type_method,
- or should Call have an attribute ent?? */
- /* Do we need to remember the initializer of fields? */
- unsigned long visit; /* visited counter for walks of the type information */
+ * Copyright (C) 1995-2008 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 entity_t.h
+ * @brief Representation of all program known entities -- private header.
+ * @author Martin Trapp, Christian Schaefer, Goetz Lindenmaier, Michael Beck
+ * @version $Id$
+ */
+#ifndef FIRM_TR_ENTITY_T_H
+#define FIRM_TR_ENTITY_T_H
+
+#include <assert.h>
+
+#include "firm_common_t.h"
+
+#include "typerep.h"
+#include "type_t.h"
+#include "ident.h"
+#include "pseudo_irg.h"
+
+typedef struct ir_initializer_base_t {
+ ir_initializer_kind_t kind;
+} ir_initializer_base_t;
+
+/**
+ * An compound initializer.
+ */
+typedef struct ir_initializer_compound_t {
+ ir_initializer_base_t base;
+ unsigned n_initializers;
+ ir_initializer_t *initializers[1];
+} ir_initializer_compound_t;
+
+/**
+ * An initializer containing an ir_node,
+ */
+typedef struct ir_initializer_const_t {
+ ir_initializer_base_t base;
+ ir_node *value;
+} ir_initializer_const_t ;
+
+/**
+ * An initializer containing a tarval.
+ */
+typedef struct ir_initializer_tarval_t {
+ ir_initializer_base_t base;
+ tarval *value;
+} ir_initializer_tarval_t ;
+
+union ir_initializer_t {
+ ir_initializer_kind_t kind;
+ ir_initializer_base_t base;
+ ir_initializer_compound_t compound;
+ ir_initializer_const_t consti;
+ ir_initializer_tarval_t tarval;
+};
+
+/** A path in a compound graph. */
+struct compound_graph_path {
+ firm_kind kind; /**< The dynamic type tag for compound graph path. */
+ ir_type *tp; /**< The type this path belongs to. */
+ int len; /**< The length of the path. */
+ struct tuple {
+ int index; /**< Array index. To compute position of array elements */
+ ir_entity *node; /**< The accessed entity. */
+ } list[1]; /**< List of entity/index tuple of length len to express the
+ access path. */
+};
+
+/** The attributes for atomic entities. */
+typedef struct atomic_ent_attr {
+ ir_node *value; /**< value if entity is not of variability uninitialized.
+ Only for atomic entities. */
+} atomic_ent_attr;
+
+/** The attributes for compound entities. */
+typedef struct compound_ent_attr {
+ ir_node **values; /**< constant values of compound entities. Only available if
+ variability not uninitialized. Must be set for variability constant. */
+ compound_graph_path **val_paths;
+ /**< paths corresponding to constant values. Only available if
+ variability not uninitialized. Must be set for variability constant. */
+} compound_ent_attr;
+
+/** A reserved value for "not yet set". */
+#define VTABLE_NUM_NOT_SET ((unsigned)(-1))
+
+/** The attributes for methods. */
+typedef struct method_ent_attr {
+ ir_graph *irg; /**< The corresponding irg if known.
+ The ir_graph constructor automatically sets this field. */
+ unsigned irg_add_properties; /**< Additional graph properties can be
+ stored in a entity if no irg is available. */
+
+ unsigned vtable_number; /**< For a dynamically called method, the number assigned
+ in the virtual function table. */
+
+ ptr_access_kind *param_access; /**< the parameter access */
+ unsigned *param_weight; /**< The weight of method's parameters. Parameters
+ with a high weight are good candidates for procedure cloning. */
+} method_ent_attr;
+
+
+/**
+ * An abstract data type to represent program entities.
+ *
+ * @see ir_type
+ */
+struct ir_entity {
+ firm_kind kind; /**< The dynamic type tag for entity. */
+ ident *name; /**< The name of this entity. */
+ ident *ld_name; /**< Unique name of this entity, i.e., the mangled
+ name. If the field is read before written a default
+ mangling is applies. The name of the owner is prepended
+ to the name of the entity, separated by a underscore.
+ E.g., for a class `A' with field `a' this
+ is the ident for `A_a'. */
+ ir_type *type; /**< The type of this entity, e.g., a method type, a
+ basic type of the language or a class itself. */
+ ir_type *owner; /**< The compound type (e.g. class type) this entity belongs to. */
+ unsigned allocation:3; /**< Distinguishes static and dynamically allocated
+ entities and some further cases. */
+ unsigned visibility:3; /**< Specifies visibility to external program fragments. */
+ unsigned variability:3; /**< Specifies variability of entities content. */
+ unsigned volatility:1; /**< Specifies volatility of entities content. */
+ unsigned aligned:1; /**< Specifies alignment of entities content. */
+ unsigned stickyness:2; /**< Specifies whether this entity is sticky. */
+ unsigned peculiarity:3; /**< The peculiarity of this entity. */
+ unsigned usage:4; /**< flag indicating usage types of this entity, see ir_entity_usage. */
+ unsigned final:1; /**< If set, this entity cannot be overridden. */
+ unsigned compiler_gen:1; /**< If set, this entity was compiler generated. */
+ unsigned backend_marked:1; /**< If set, this entity was marked by the backend for emission. */
+ unsigned has_initializer:1; /**< if set, this entity is initialized by new style initializers. */
+ int offset; /**< Offset in bytes for this entity. Fixed when layout
+ of owner is determined. */
+ unsigned alignment; /**< entity alignment in bytes */
+ unsigned char offset_bit_remainder;
+ /**< If the entity is a bit field, this is the offset of
+ the start of the bit field within the byte specified
+ by offset. */
+ ir_visited_t visit; /**< visited counter for walks of the type information. */
+ struct dbg_info *dbi; /**< A pointer to information for debug support. */
+ void *link; /**< To store some intermediate information. */
+ ir_type *repr_class; /**< If this entity represents a class info, the associated class. */
+
+ /* ------------- fields for entities owned by a class type ---------------*/
+
+ ir_entity **overwrites; /**< A list of entities this entity overwrites. */
+ ir_entity **overwrittenby; /**< A list of entities that overwrite this entity. */
+
+ /* ------------- fields for atomic entities --------------- */
+ ir_node *value; /**< value if entity is not of variability uninitialized.
+ Only for atomic entities. */
+ union {
+ /* ------------- fields for compound entities -------------- */
+ compound_ent_attr cmpd_attr;
+ /* ------------- fields for method entities ---------------- */
+ method_ent_attr mtd_attr;
+ /* entity initializer */
+ ir_initializer_t *initializer;
+ } attr; /**< type specific attributes */
+
+ /* ------------- fields for analyses ---------------*/
+
+#ifdef DEBUG_libfirm
+ long nr; /**< A unique node number for each node to make output readable. */
+# endif /* DEBUG_libfirm */
};
+/** Initialize the entity module. */
+void firm_init_entity(void);
+
+
+/* ----------------------- inline functions ------------------------ */
+static inline int
+_is_entity(const void *thing) {
+ return get_kind(thing) == k_entity;
+}
+
+static inline const char *
+_get_entity_name(const ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return get_id_str(get_entity_ident(ent));
+}
+
+static inline ident *
+_get_entity_ident(const ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return ent->name;
+}
+
+static inline void
+_set_entity_ident(ir_entity *ent, ident *id) {
+ assert(ent && ent->kind == k_entity);
+ ent->name = id;
+}
+
+static inline ir_type *
+_get_entity_owner(ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return ent->owner = skip_tid(ent->owner);
+}
+
+static inline ident *
+_get_entity_ld_ident(ir_entity *ent)
+{
+ assert(ent && ent->kind == k_entity);
+ if (ent->ld_name == NULL)
+ ent->ld_name = id_mangle_entity(ent);
+ return ent->ld_name;
+}
+
+static inline void
+_set_entity_ld_ident(ir_entity *ent, ident *ld_ident) {
+ assert(ent && ent->kind == k_entity);
+ ent->ld_name = ld_ident;
+}
+
+static inline const char *
+_get_entity_ld_name(ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return get_id_str(get_entity_ld_ident(ent));
+}
+
+static inline ir_type *
+_get_entity_type(ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return ent->type = skip_tid(ent->type);
+}
+
+static inline void
+_set_entity_type(ir_entity *ent, ir_type *type) {
+ assert(ent && ent->kind == k_entity);
+ ent->type = type;
+}
+
+static inline ir_allocation
+_get_entity_allocation(const ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return ent->allocation;
+}
+
+static inline void
+_set_entity_allocation(ir_entity *ent, ir_allocation al) {
+ assert(ent && ent->kind == k_entity);
+ ent->allocation = al;
+}
+
+static inline ir_visibility
+_get_entity_visibility(const ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return ent->visibility;
+}
+
+static inline ir_variability
+_get_entity_variability(const ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return ent->variability;
+}
+
+static inline ir_volatility
+_get_entity_volatility(const ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return ent->volatility;
+}
+
+static inline void
+_set_entity_volatility(ir_entity *ent, ir_volatility vol) {
+ assert(ent && ent->kind == k_entity);
+ ent->volatility = vol;
+}
+
+static inline unsigned
+_get_entity_alignment(const ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return ent->alignment;
+}
+
+static inline void
+_set_entity_alignment(ir_entity *ent, unsigned alignment) {
+ assert(ent && ent->kind == k_entity);
+ ent->alignment = alignment;
+}
+
+static inline ir_align
+_get_entity_aligned(const ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return ent->aligned;
+}
+
+static inline void
+_set_entity_aligned(ir_entity *ent, ir_align a) {
+ assert(ent && ent->kind == k_entity);
+ ent->aligned = a;
+}
+
+static inline ir_peculiarity
+_get_entity_peculiarity(const ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return ent->peculiarity;
+}
+
+/**
+ * @todo Why peculiarity only for methods?
+ * Good question. Originally, there were only description and
+ * existent. The thought was, what sense does it make to
+ * describe a field? With inherited the situation changed. So
+ * I removed the assertion. GL, 28.2.05
+ */
+static inline void
+_set_entity_peculiarity(ir_entity *ent, ir_peculiarity pec) {
+ assert(ent && ent->kind == k_entity);
+ /* @@@ why peculiarity only for methods? */
+ //assert(is_Method_type(ent->type));
+
+ ent->peculiarity = pec;
+}
+
+static inline ir_stickyness
+_get_entity_stickyness(const ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return ent->stickyness;
+}
+
+static inline void
+_set_entity_stickyness(ir_entity *ent, ir_stickyness stickyness) {
+ assert(ent && ent->kind == k_entity);
+ ent->stickyness = stickyness;
+}
+
+static inline int
+_is_entity_final(const ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return (int)ent->final;
+}
+
+static inline void
+_set_entity_final(ir_entity *ent, int final) {
+ assert(ent && ent->kind == k_entity);
+ ent->final = final ? 1 : 0;
+}
+
+static inline int
+_is_entity_compiler_generated(const ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return ent->compiler_gen;
+}
+
+static inline void
+_set_entity_compiler_generated(ir_entity *ent, int flag) {
+ assert(ent && ent->kind == k_entity);
+ ent->compiler_gen = flag ? 1 : 0;
+}
+
+static inline int
+_is_entity_backend_marked(const ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return ent->backend_marked;
+}
+
+static inline void
+_set_entity_backend_marked(ir_entity *ent, int flag) {
+ assert(ent && ent->kind == k_entity);
+ ent->backend_marked = flag ? 1 : 0;
+}
+
+static inline ir_entity_usage
+_get_entity_usage(const ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return ent->usage;
+}
+
+static inline void
+_set_entity_usage(ir_entity *ent, ir_entity_usage state) {
+ assert(ent && ent->kind == k_entity);
+ ent->usage = state;
+}
+
+static inline int
+_get_entity_offset(const ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return ent->offset;
+}
+
+static inline void
+_set_entity_offset(ir_entity *ent, int offset) {
+ assert(ent && ent->kind == k_entity);
+ ent->offset = offset;
+}
+
+static inline unsigned char
+_get_entity_offset_bits_remainder(const ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return ent->offset_bit_remainder;
+}
+
+static inline void
+_set_entity_offset_bits_remainder(ir_entity *ent, unsigned char offset) {
+ assert(ent && ent->kind == k_entity);
+ ent->offset_bit_remainder = offset;
+}
+
+static inline void *
+_get_entity_link(const ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return ent->link;
+}
+
+static inline void
+_set_entity_link(ir_entity *ent, void *l) {
+ assert(ent && ent->kind == k_entity);
+ ent->link = l;
+}
+
+static inline ir_graph *
+_get_entity_irg(const ir_entity *ent) {
+ ir_graph *irg;
+ assert(ent && ent->kind == k_entity);
+ if (!is_Method_type(ent->type) || ent == unknown_entity) {
+ return NULL;
+ }
+
+ irg = ent->attr.mtd_attr.irg;
+ if (irg != NULL && !get_visit_pseudo_irgs() && is_pseudo_ir_graph(irg))
+ return NULL;
+ return irg;
+}
+
+static inline ir_visited_t
+_get_entity_visited(ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return ent->visit;
+}
+
+static inline void
+_set_entity_visited(ir_entity *ent, ir_visited_t num) {
+ assert(ent && ent->kind == k_entity);
+ ent->visit = num;
+}
+
+static inline void
+_mark_entity_visited(ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ ent->visit = firm_type_visited;
+}
+
+static inline int
+_entity_visited(ir_entity *ent) {
+ return _get_entity_visited(ent) >= firm_type_visited;
+}
+
+static inline int
+_entity_not_visited(ir_entity *ent) {
+ return _get_entity_visited(ent) < firm_type_visited;
+}
+
+static inline ir_type *
+_get_entity_repr_class(const ir_entity *ent) {
+ assert(ent && ent->kind == k_entity);
+ return ent->repr_class;
+}
+
+static inline dbg_info *
+_get_entity_dbg_info(const ir_entity *ent) {
+ return ent->dbi;
+}
+
+static inline void
+_set_entity_dbg_info(ir_entity *ent, dbg_info *db) {
+ ent->dbi = db;
+}
+
+
+#define is_entity(thing) _is_entity(thing)
+#define get_entity_name(ent) _get_entity_name(ent)
+#define get_entity_ident(ent) _get_entity_ident(ent)
+#define set_entity_ident(ent, id) _set_entity_ident(ent, id)
+#define get_entity_owner(ent) _get_entity_owner(ent)
+#define get_entity_ld_ident(ent) _get_entity_ld_ident(ent)
+#define set_entity_ld_ident(ent, ld_ident) _set_entity_ld_ident(ent, ld_ident)
+#define get_entity_ld_name(ent) _get_entity_ld_name(ent)
+#define get_entity_type(ent) _get_entity_type(ent)
+#define set_entity_type(ent, type) _set_entity_type(ent, type)
+#define get_entity_allocation(ent) _get_entity_allocation(ent)
+#define set_entity_allocation(ent, al) _set_entity_allocation(ent, al)
+#define get_entity_visibility(ent) _get_entity_visibility(ent)
+#define get_entity_variability(ent) _get_entity_variability(ent)
+#define get_entity_volatility(ent) _get_entity_volatility(ent)
+#define set_entity_volatility(ent, vol) _set_entity_volatility(ent, vol)
+#define set_entity_alignment(ent, alignment) _set_entity_alignment(ent, alignment)
+#define get_entity_alignment(ent) _get_entity_alignment(ent)
+#define get_entity_align(ent) _get_entity_align(ent)
+#define set_entity_align(ent, a) _set_entity_align(ent, a)
+#define get_entity_peculiarity(ent) _get_entity_peculiarity(ent)
+#define set_entity_peculiarity(ent, pec) _set_entity_peculiarity(ent, pec)
+#define get_entity_stickyness(ent) _get_entity_stickyness(ent)
+#define set_entity_stickyness(ent, stickyness) _set_entity_stickyness(ent, stickyness)
+#define is_entity_final(ent) _is_entity_final(ent)
+#define set_entity_final(ent, final) _set_entity_final(ent, final)
+#define is_entity_compiler_generated(ent) _is_entity_compiler_generated(ent)
+#define set_entity_compiler_generated(ent, flag) _set_entity_compiler_generated(ent, flag)
+#define is_entity_backend_marked(ent) _is_entity_backend_marked(ent)
+#define set_entity_backend_marked(ent, flag) _set_entity_backend_marked(ent, flag)
+#define get_entity_usage(ent) _get_entity_usage(ent)
+#define set_entity_usage(ent, flags) _set_entity_usage(ent, flags)
+#define get_entity_offset(ent) _get_entity_offset(ent)
+#define set_entity_offset(ent, offset) _set_entity_offset(ent, offset)
+#define get_entity_offset_bits_remainder(ent) _get_entity_offset_bits_remainder(ent)
+#define set_entity_offset_bits_remainder(ent, o) _set_entity_offset_bits_remainder(ent, o)
+#define get_entity_link(ent) _get_entity_link(ent)
+#define set_entity_link(ent, l) _set_entity_link(ent, l)
+#define get_entity_irg(ent) _get_entity_irg(ent)
+#define get_entity_visited(ent) _get_entity_visited(ent)
+#define set_entity_visited(ent, num) _set_entity_visited(ent, num)
+#define mark_entity_visited(ent) _mark_entity_visited(ent)
+#define entity_visited(ent) _entity_visited(ent)
+#define entity_not_visited(ent) _entity_not_visited(ent)
+#define get_entity_repr_class(ent) _get_entity_repr_class(ent)
+#define get_entity_dbg_info(ent) _get_entity_dbg_info(ent)
+#define set_entity_dbg_info(ent, db) _set_entity_dbg_info(ent, db)
+
-# endif /* _ENTITY_T_H_ */
+#endif /* FIRM_TR_ENTITY_T_H */
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