* 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.
-* - int offset: Offset in byte for this entity. Fixed when layout
+* - int offset: Offset in bits for this entity. Fixed when layout
* of owner is determined.
* - ir_graph *irg: If (type == method_type) this is the corresponding irg.
-* The ir_graph constructor automatically sets this field.
+* The ir_graph constructor automatically sets this field.
* If (type != method_type) access of this field will cause
* an assertion.
*/
* @param variability A flag indicating the variability of this entity (values:
* uninitialized, initalized, part_constant, constant)
* @param volatility @@@
- * @param offset The offset of the entity within the compound object. Only set
+ * @param offset The offset of the entity within the compound object in bits. Only set
* if the owner in the state "layout_fixed".
* @param overwrites A list of entities overwritten by this entity. This list is only
* existent if the owner of this entity is a class. The members in
void free_entity (entity *ent);
/** Returns the name of an entity. */
-const char *get_entity_name (entity *ent);
+const char *get_entity_name (const entity *ent);
/** Returns the ident of an entity. */
-ident *get_entity_ident (entity *ent);
+ident *get_entity_ident (const entity *ent);
/** Returns the mangled name of the entity.
*
void set_entity_ld_ident (entity *ent, ident *ld_ident);
/** Returns the mangled name of the entity as a string. */
-const char *get_entity_ld_name (entity *end);
+const char *get_entity_ld_name (entity *ent);
/** Returns the owner of the entity. */
type *get_entity_owner (entity *ent);
ent to owner!! */
void set_entity_owner (entity *ent, type *owner);
-/** Asserts if the type owner is neither a compound type or an array */
-INLINE void assert_legal_owner_of_ent(type *owner);
+/** Asserts if the type owner is either a compound type or an array */
+void assert_legal_owner_of_ent(type *owner);
/** Returns the type of an entity. */
type *get_entity_type (entity *ent);
/** The allocation type. */
typedef enum {
allocation_automatic, /**< The entity is allocated during runtime, implicitly
- as component of a compound type. This is the default. */
+ as component of a compound type. This is the default. */
allocation_parameter, /**< The entity is a parameter. It is also automatic allocated.
- We distinguish the allocation of paramters from the allocation
- of local variables as their placement depends on the calling
- conventions. */
+ We distinguish the allocation of parameters from the allocation
+ of local variables as their placement depends on the calling
+ conventions. */
allocation_dynamic, /**< The entity is allocated during runtime, explicitly
- by an Alloc node. */
+ by an Alloc node. */
allocation_static /**< The entity is allocated statically. We can use a
- SymConst(?) as address of the entity. */
+ Const as address of the entity. */
} ent_allocation;
/** Returns the allocation type of an entity. */
-ent_allocation get_entity_allocation (entity *ent);
+ent_allocation get_entity_allocation (const entity *ent);
/** Sets the allocation type of an entity. */
void set_entity_allocation (entity *ent, ent_allocation al);
-/** Return the name of the visibility */
+/** Return the name of the allocation type. */
const char *get_allocation_name(ent_allocation vis);
/**
typedef enum {
visibility_local, /**< The entity is only visible locally. This is the default. */
visibility_external_visible, /**< The entity is visible to other external program parts, but
- it is defined here. It may not be optimized away. The entity must
- be static_allocated. */
+ it is defined here. It may not be optimized away. The entity must
+ be static_allocated. */
visibility_external_allocated /**< The entity is defined and allocated externally. This compilation
- must not allocate memory for this entity. The entity must
- be static_allocated. This can also be an external defined
- method. */
+ must not allocate memory for this entity. The entity must
+ be static_allocated. This can also be an external defined
+ method. */
} ent_visibility;
/** Returns the visibility of an entity. */
-ent_visibility get_entity_visibility (entity *ent);
+ent_visibility get_entity_visibility (const entity *ent);
/** Sets the visibility of an entity. */
void set_entity_visibility (entity *ent, ent_visibility vis);
typedef enum {
variability_uninitialized, /**< The content of the entity is completely unknown. */
variability_initialized, /**< After allocation the entity is initalized with the
- value given somewhere in the entity. */
- variability_part_constant, /**< For entities of compound types. Some members of the entity
- are constant. The others are uninitialized. Those members
- given a value for are constant. */
+ value given somewhere in the entity. */
+ variability_part_constant, /**< For entities of compound types.
+ The members of the entity are mixed constant,
+ initialized or uninitialized. */
variability_constant /**< The entity is constant. */
} ent_variability;
/** Returns the variability of an entity. */
-ent_variability get_entity_variability (entity *ent);
+ent_variability get_entity_variability (const entity *ent);
/** Sets the variability of an entity. */
void set_entity_variability (entity *ent, ent_variability var);
} ent_volatility;
/** Returns the volatility of an entity. */
-ent_volatility get_entity_volatility (entity *ent);
+ent_volatility get_entity_volatility (const entity *ent);
/** Sets the volatility of an entity. */
void set_entity_volatility (entity *ent, ent_volatility vol);
-/* Return the name of the volatility. */
+/** Return the name of the volatility. */
const char *get_volatility_name(ent_volatility var);
-/** Returns the offset of an entity (in a compound). Only set if layout = fixed. */
-int get_entity_offset (entity *ent);
+/** This enumeration flags the stickyness of an entity. */
+typedef enum {
+ stickyness_unsticky, /**< The entity can be removed from
+ the program, unless contraindicated
+ by other attributes */
+ stickyness_sticky /**< The entity must remain in the
+ program in any case */
+} ent_stickyness;
+
+/** Get the entity's stickyness */
+ent_stickyness get_entity_stickyness(const entity *ent);
+
+/** Set the entity's stickyness */
+void set_entity_stickyness(entity *ent, ent_stickyness stickyness);
+
+/** Returns the offset of an entity (in a compound) in bytes. Only set if layout = fixed. */
+int get_entity_offset_bytes(const entity *ent);
+
+/** Returns the offset of an entity (in a compound) in bits. Only set if layout = fixed. */
+int get_entity_offset_bits(const entity *ent);
-/** Sets the offset of an entity (in a compound). */
-void set_entity_offset (entity *ent, int offset);
+/** Sets the offset of an entity (in a compound) in bytes. */
+void set_entity_offset_bytes(entity *ent, int offset);
+
+/** Sets the offset of an entity (in a compound) in bits. */
+void set_entity_offset_bits(entity *ent, int offset);
/** Returns the stored intermediate information. */
-void* get_entity_link(entity *ent);
+void* get_entity_link(const entity *ent);
/** Stores new intermediate information. */
void set_entity_link(entity *ent, void *l);
/* -- Fields of method entities -- */
-/* The entity knows the corresponding irg if the entity is a method.
+/** The entity knows the corresponding irg if the entity is a method.
This allows to get from a Call to the called irg.
Only entities of peculiarity "existent" can have a corresponding irg,
else the field is fixed to NULL. (Get returns NULL, set asserts.) */
-ir_graph *get_entity_irg(entity *ent);
+ir_graph *get_entity_irg(const entity *ent);
void set_entity_irg(entity *ent, ir_graph *irg);
/** Return the peculiarity of an entity. */
-peculiarity get_entity_peculiarity (entity *ent);
+peculiarity get_entity_peculiarity (const entity *ent);
/** Sets the peculiarity of an entity. */
void set_entity_peculiarity (entity *ent, peculiarity pec);
const char *get_peculiarity_name(peculiarity var);
/* -- Representation of constant values of entites -- */
+/** Returns true if the the node is representable as code on
+ * const_code_irg. */
+int is_irn_const_expression(ir_node *n);
/* Set current_ir_graph to get_const_code_irg() to generate a constant
expression. */
-/* Copies a firm subgraph that complies to the restrictions for
- constant expressions to current_block in current_ir_graph. */
+
+/**
+ * Copies a firm subgraph that complies to the restrictions for
+ * constant expressions to current_block in current_ir_graph.
+ */
ir_node *copy_const_value(ir_node *n);
/* Set has no effect for existent entities of type method. */
int get_compound_graph_path_length(compound_graph_path *gr);
entity *get_compound_graph_path_node(compound_graph_path *gr, int pos);
void set_compound_graph_path_node(compound_graph_path *gr, int pos, entity *node);
+int get_compound_graph_path_array_index(compound_graph_path *gr, int pos);
+void set_compound_graph_path_array_index(compound_graph_path *gr, int pos, int index);
/* A value of a compound entity is a pair of a value and the description of the
corresponding access path to the member of the compound. */
void add_compound_ent_value_w_path(entity *ent, ir_node *val, compound_graph_path *path);
void set_compound_ent_value_w_path(entity *ent, ir_node *val, compound_graph_path *path, int pos);
+/** Returns the number of constant values needed to initialize the entity.
+ *
+ * Asserts if the entity has variability_uninitialized.
+ * */
int get_compound_ent_n_values(entity *ent);
ir_node *get_compound_ent_value(entity *ent, int pos);
compound_graph_path *get_compound_ent_value_path(entity *ent, int pos);
-/* Removes all constant entries where the path ends at value_ent. Does not
+
+/** Removes all constant entries where the path ends at value_ent. Does not
free the memory of the paths. (The same path might be used for several
constant entities. */
void remove_compound_ent_value(entity *ent, entity *value_ent);
direct, atomic member of the constant entities type. In this case the
corresponding entity can be accessed directly. The following functions
allow direct access. */
-/* generates a Path with length 1 */
+
+/** generates a Path with length 1 */
void add_compound_ent_value(entity *ent, ir_node *val, entity *member);
-/* Returns the last member in the path */
-entity *get_compound_ent_value_member(entity *ent, int pos);
-/* Sets the path at pos 0 */
-void set_compound_ent_value(entity *ent, ir_node *val, entity *member, int pos);
+/** Returns the last member in the path */
+entity *get_compound_ent_value_member(entity *ent, int pos);
+/** Sets the path at pos 0 */
+void set_compound_ent_value(entity *ent, ir_node *val, entity *member, int pos);
/** Inits the entity ent witch must be of a one dimensional
array type with the values given in the values array.
values have the proper mode for the array. */
void set_array_entity_values(entity *ent, tarval **values, int num_vals);
+/** Return the overall offset of value at position pos in bits.
+ *
+ * This requires that the layout of all concerned types is fixed.
+ *
+ * @param ent Any entity of compound type with at least pos initialization values.
+ * @param pos The position of the value for which the offset is requested.
+ */
+int get_compound_ent_value_offset_bits(entity *ent, int pos);
+
+/** Return the overall offset of value at position pos in bytes.
+ *
+ * This requires that the layout of all concerned types is fixed.
+ * Asserts if bit offset is not byte aligned.
+ *
+ * @param ent Any entity of compound type with at least pos initialization values.
+ * @param pos The position of the value for which the offset is requested.
+ */
+int get_compound_ent_value_offset_bytes(entity *ent, int pos);
+
+/** Compute the array indicees in compound graph paths of initialized entities.
+ *
+ * All arrays must have fixed lower and upper bounds. One array can
+ * have an open upper bound. If there are several open bounds, we do
+ * nothing. There must be initializer elements for all array
+ * elements. Uses the link field in the array element entities. The
+ * array bounds must be representable as ints.
+ *
+ * @param ent Any entity.
+ */
+void compute_compound_ent_array_indicees(entity *ent);
+
+/** Sort the values of the compound entity by their overall offset.
+ *
+ * This requires that the layout of all concerned types is fixed.
+ * If the entity has no initialization information the method just
+ * returns. This is needed to dump the entity in a backend.
+ *
+ * @param ent Any entity.
+ */
+void sort_compound_ent_values(entity *ent);
+
+
/* --- Fields of entities with a class type as owner --- */
/* Overwrites is a field that specifies that an access to the overwritten
entity in the supertype must use this entity. It's a list as with
* @return
* true if the thing is an entity, else false
*/
-int is_entity (void *thing);
+int is_entity (const void *thing);
/** Returns true if the type of the entity is a primitive, pointer
enumeration or method type. */
/** Outputs a unique number for this entity if libfirm is compiled for
debugging, (configure with --enable-debug) else returns 0. */
-INLINE long get_entity_nr(entity *ent);
+long get_entity_nr(entity *ent);
/** Returns the entitys visited count. */
unsigned long get_entity_visited(entity *ent);
/** Returns true if this entity was not visited. */
bool entity_not_visited(entity *ent);
+/** Returns the dynamically referenced entity if the static entity and the
+ * dynamic type are given. */
+entity *resolve_ent_polymorphy(type *dynamic_class, entity* static_ent);
+
+/**
+ * @page unknown_entity
+ *
+ * This entity is an auxiliary entity dedicated to support analyses.
+ *
+ * The unknown entity represents that there could be an entity, but it is not
+ * known. This entity can be used to initialize fields before an analysis (not known
+ * yet) or to represent the top of a lattice (could not be determined). There exists
+ * exactly one entity unknown. This entity has as owner and as type the unknown type. It is
+ * allocated when initializing the entity module.
+ *
+ * The entity can take the role of any entity, also methods. It returns default
+ * values in these cases.
+ *
+ * The following values are set:
+ * name = "unknown_entity"
+ * ld_name = "unknown_entity"
+ * owner = unknown_type
+ * type = unknown_type
+ * visibility = visibility_external_allocated
+ * offset = -1
+ * variability = variability_uninitialized
+ * value = SymConst(unknown_entity)
+ * values = NULL
+ * val_paths = NULL
+ * peculiarity = peculiarity_existent
+ * volatility = volatility_non_volatile
+ * stickyness = stickyness_unsticky
+ * ld_name = NULL
+ * overwrites = NULL
+ * overwrittenby = NULL
+ * irg = NULL
+ * link = NULL
+ *
+ */
+/* A variable that contains the only unknown entity. */
+extern entity *unknown_entity;
+/* Returns the unknown entity */
+entity *get_unknown_entity(void);
+
# endif /* _ENTITY_H_ */
projects / libfirm / blobdiff