X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Ftr%2Fentity.h;h=9de7abb6f9819ed39d989b2e17907421c4a6921b;hb=3bcbfec36f89ae53617d216824c72a01c9034abb;hp=6938e1187960373ff9d1c8f0549e602238f40562;hpb=bbba4631276380ff7e88dbc70a3b8fb89cb96899;p=libfirm diff --git a/ir/tr/entity.h b/ir/tr/entity.h index 6938e1187..9de7abb6f 100644 --- a/ir/tr/entity.h +++ b/ir/tr/entity.h @@ -46,10 +46,10 @@ * 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. */ @@ -95,7 +95,7 @@ typedef struct ir_graph ir_graph; * @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 @@ -175,10 +175,10 @@ entity *copy_entity_name (entity *old, ident *new_name); 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. * @@ -192,7 +192,7 @@ ident *get_entity_ld_ident (entity *ent); 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); @@ -201,8 +201,8 @@ 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); @@ -213,19 +213,19 @@ void set_entity_type (entity *ent, type *tp); /** 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 paramters 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 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); @@ -240,16 +240,16 @@ 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); @@ -261,15 +261,15 @@ const char *get_visibility_name(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); @@ -284,36 +284,57 @@ typedef enum { } 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) in bytes. */ +void set_entity_offset_bytes(entity *ent, int offset); -/** 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 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); @@ -327,8 +348,11 @@ const char *get_peculiarity_name(peculiarity var); 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. */ @@ -349,15 +373,22 @@ void free_compound_graph_path (compound_graph_path *gr); 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); @@ -366,14 +397,15 @@ 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. @@ -383,6 +415,48 @@ void set_compound_ent_value(entity *ent, ir_node *val, entity *member, int p 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 @@ -415,7 +489,7 @@ void remove_entity_overwrittenby(entity *ent, entity *overwrites); * @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. */ @@ -434,7 +508,7 @@ bool equal_entity(entity *ent1, entity *ent2); /** 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); @@ -455,4 +529,44 @@ bool entity_not_visited(entity *ent); * 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 = NULL + * 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_ */