X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Ftr%2Fentity.h;h=c2ac20a905db1a3adeacf64304ee171b247b9d93;hb=98ca7e71bc79bb2a3b2ccb039df78000fc48e70a;hp=344efea1942769b6e2d1ecb09a161fdc8fa99084;hpb=f6b661eaae85376166a897e8e7b3bf3a177f8524;p=libfirm diff --git a/ir/tr/entity.h b/ir/tr/entity.h index 344efea19..c2ac20a90 100644 --- a/ir/tr/entity.h +++ b/ir/tr/entity.h @@ -49,13 +49,11 @@ * - 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. */ -/* $Id$ */ - # ifndef _ENTITY_H_ # define _ENTITY_H_ @@ -63,6 +61,8 @@ # include "type.h" # include "dbginfo.h" +# include "tr_inheritance.h" + /*-----------------------------------------------------------------*/ /* general */ /*-----------------------------------------------------------------*/ @@ -154,6 +154,11 @@ entity *new_d_entity (type *owner, ident *name, type *tp, dbg_info *db); * * Automatically inserts the new entity as a member of owner. * Resets the overwrites/overwritten_by fields. + * Keeps the old atomic value. + * @@@ Maybe we should change this. If peculiarity of a method + * is existent, we should add a new SymConst that points to + * itself and not to the origin. Right now we have to change + * the peculiarity and then set a new atomic value by hand. */ entity *copy_entity_own (entity *old, type *new_owner); @@ -163,6 +168,7 @@ entity *copy_entity_own (entity *old, type *new_owner); * * Automatically inserts the new entity as a member of owner. * The mangled name ld_name is set to NULL. + * Overwrites relation is copied from old. */ entity *copy_entity_name (entity *old, ident *new_name); @@ -175,10 +181,10 @@ 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 +198,7 @@ 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); @@ -215,7 +221,7 @@ typedef enum { allocation_automatic, /**< The entity is allocated during runtime, implicitly 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 + 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 @@ -225,7 +231,7 @@ typedef enum { } 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); @@ -233,29 +239,14 @@ void set_entity_allocation (entity *ent, ent_allocation al); /** Return the name of the allocation type. */ const char *get_allocation_name(ent_allocation vis); -/** - * This enumeration flags the visibility of entities. This is necessary - * for partial compilation. - */ -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. */ - 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. */ -} ent_visibility; - /** Returns the visibility of an entity. */ -ent_visibility get_entity_visibility (entity *ent); +visibility get_entity_visibility (const entity *ent); /** Sets the visibility of an entity. */ -void set_entity_visibility (entity *ent, ent_visibility vis); +void set_entity_visibility (entity *ent, visibility vis); /** Return the name of the visibility */ -const char *get_visibility_name(ent_visibility vis); +const char *get_visibility_name(visibility vis); /** This enumeration flags the variability of entities. */ typedef enum { @@ -269,7 +260,7 @@ typedef enum { } 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); @@ -284,12 +275,12 @@ 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); /** This enumeration flags the stickyness of an entity. */ @@ -302,16 +293,16 @@ typedef enum { } ent_stickyness; /** Get the entity's stickyness */ -ent_stickyness get_entity_stickyness(entity *ent); +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(entity *ent); +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(entity *ent); +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); @@ -320,21 +311,21 @@ void set_entity_offset_bytes(entity *ent, int offset); 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); @@ -348,8 +339,11 @@ 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. */ @@ -373,6 +367,10 @@ void set_compound_graph_path_node(compound_graph_path *gr, int pos, entity *n 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); +/** Checks whether the path up to pos is correct. If the path contains a NULL, + * assumes the path is not complete and returns 'true'. */ +int is_proper_compound_graph_path(compound_graph_path *gr, int pos); + /* 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); @@ -382,9 +380,18 @@ void set_compound_ent_value_w_path(entity *ent, ir_node *val, compound_graph * Asserts if the entity has variability_uninitialized. * */ int get_compound_ent_n_values(entity *ent); +/** Returns a constant value given the position. */ ir_node *get_compound_ent_value(entity *ent, int pos); +/** Returns the access path for value at position 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 +/** Returns the position of a value with the given path. + * The path must contain array indicees for all array element entities. */ +int get_compound_ent_pos_by_path(entity *ent, compound_graph_path *path); +/** Returns a constant value given the access path. + * The path must contain array indicees for all array element entities. */ +ir_node *get_compound_ent_value_by_path(entity *ent, compound_graph_path *path); + +/** 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); @@ -393,11 +400,14 @@ 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 */ + +/** Returns the last member in the path */ entity *get_compound_ent_value_member(entity *ent, int pos); -/* Sets the path at pos 0 */ + +/** 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 @@ -482,7 +492,7 @@ 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. */ @@ -498,7 +508,6 @@ int is_compound_entity(entity *ent); */ 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. */ long get_entity_nr(entity *ent); @@ -518,21 +527,44 @@ bool 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); - - -/*-----------------------------------------------------------------*/ -/* Debug aides */ -/*-----------------------------------------------------------------*/ - - -/** Write the entity and all its attributes to stdout. +/** + * @page unknown_entity * - * Writes the entity and all its attributes to stdout if DEBUG_libfirm - * is set. Else does nothing. */ -void dump_entity (entity *ent); - + * 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_ */