| /**************************************************************************** |
| * * |
| * GNAT COMPILER COMPONENTS * |
| * * |
| * A D A - T R E E * |
| * * |
| * C Header File * |
| * * |
| * Copyright (C) 1992-2006 Free Software Foundation, Inc. * |
| * * |
| * GNAT is free software; you can redistribute it and/or modify it under * |
| * terms of the GNU General Public License as published by the Free Soft- * |
| * ware Foundation; either version 2, or (at your option) any later ver- * |
| * sion. GNAT is distributed in the hope that it will be useful, but WITH- * |
| * OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * |
| * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * |
| * for more details. You should have received a copy of the GNU General * |
| * Public License distributed with GNAT; see file COPYING. If not, write * |
| * to the Free Software Foundation, 51 Franklin Street, Fifth Floor, * |
| * Boston, MA 02110-1301, USA. * |
| * * |
| * GNAT was originally developed by the GNAT team at New York University. * |
| * Extensive contributions were provided by Ada Core Technologies Inc. * |
| * * |
| ****************************************************************************/ |
| |
| /* Ada language-specific GC tree codes. */ |
| #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) SYM, |
| enum gnat_tree_code { |
| __DUMMY = LAST_AND_UNUSED_TREE_CODE, |
| #include "ada-tree.def" |
| LAST_GNAT_TREE_CODE |
| }; |
| #undef DEFTREECODE |
| |
| /* Ada uses the lang_decl and lang_type fields to hold a tree. */ |
| union lang_tree_node |
| GTY((desc ("0"), |
| chain_next ("(union lang_tree_node *)TREE_CHAIN (&%h.t)"))) |
| { |
| union tree_node GTY((tag ("0"))) t; |
| }; |
| struct lang_decl GTY(()) {tree t; }; |
| struct lang_type GTY(()) {tree t; }; |
| |
| /* Define macros to get and set the tree in TYPE_ and DECL_LANG_SPECIFIC. */ |
| #define GET_TYPE_LANG_SPECIFIC(NODE) \ |
| (TYPE_LANG_SPECIFIC (NODE) ? TYPE_LANG_SPECIFIC (NODE)->t : NULL_TREE) |
| #define SET_TYPE_LANG_SPECIFIC(NODE, X) \ |
| (TYPE_LANG_SPECIFIC (NODE) \ |
| = (TYPE_LANG_SPECIFIC (NODE) \ |
| ? TYPE_LANG_SPECIFIC (NODE) : ggc_alloc (sizeof (struct lang_type)))) \ |
| ->t = X; |
| |
| #define GET_DECL_LANG_SPECIFIC(NODE) \ |
| (DECL_LANG_SPECIFIC (NODE) ? DECL_LANG_SPECIFIC (NODE)->t : NULL_TREE) |
| #define SET_DECL_LANG_SPECIFIC(NODE, VALUE) \ |
| (DECL_LANG_SPECIFIC (NODE) \ |
| = (DECL_LANG_SPECIFIC (NODE) \ |
| ? DECL_LANG_SPECIFIC (NODE) : ggc_alloc (sizeof (struct lang_decl)))) \ |
| ->t = VALUE; |
| |
| /* Flags added to GCC type nodes. */ |
| |
| /* For RECORD_TYPE, UNION_TYPE, and QUAL_UNION_TYPE, nonzero if this is a |
| record being used as a fat pointer (only true for RECORD_TYPE). */ |
| #define TYPE_IS_FAT_POINTER_P(NODE) \ |
| TYPE_LANG_FLAG_0 (RECORD_OR_UNION_CHECK (NODE)) |
| |
| #define TYPE_FAT_POINTER_P(NODE) \ |
| (TREE_CODE (NODE) == RECORD_TYPE && TYPE_IS_FAT_POINTER_P (NODE)) |
| |
| /* For integral types and array types, nonzero if this is a packed array type. |
| Such types should not be extended to a larger size. */ |
| #define TYPE_PACKED_ARRAY_TYPE_P(NODE) TYPE_LANG_FLAG_0 (NODE) |
| |
| #define TYPE_IS_PACKED_ARRAY_TYPE_P(NODE) \ |
| ((TREE_CODE (NODE) == INTEGER_TYPE || TREE_CODE (NODE) == ARRAY_TYPE) \ |
| && TYPE_PACKED_ARRAY_TYPE_P (NODE)) |
| |
| /* For INTEGER_TYPE, nonzero if this is a modular type with a modulus that |
| is not equal to two to the power of its mode's size. */ |
| #define TYPE_MODULAR_P(NODE) TYPE_LANG_FLAG_1 (INTEGER_TYPE_CHECK (NODE)) |
| |
| /* For ARRAY_TYPE, nonzero if this type corresponds to a dimension of |
| an Ada array other than the first. */ |
| #define TYPE_MULTI_ARRAY_P(NODE) TYPE_LANG_FLAG_1 (ARRAY_TYPE_CHECK (NODE)) |
| |
| /* For FUNCTION_TYPE, nonzero if this denotes a function returning an |
| unconstrained array or record. */ |
| #define TYPE_RETURNS_UNCONSTRAINED_P(NODE) \ |
| TYPE_LANG_FLAG_1 (FUNCTION_TYPE_CHECK (NODE)) |
| |
| /* For RECORD_TYPE, UNION_TYPE, and QUAL_UNION_TYPE, nonzero if this denotes |
| a justified modular type (will only be true for RECORD_TYPE). */ |
| #define TYPE_JUSTIFIED_MODULAR_P(NODE) \ |
| TYPE_LANG_FLAG_1 (RECORD_OR_UNION_CHECK (NODE)) |
| |
| /* Nonzero in an arithmetic subtype if this is a subtype not known to the |
| front-end. */ |
| #define TYPE_EXTRA_SUBTYPE_P(NODE) TYPE_LANG_FLAG_2 (NODE) |
| |
| /* Nonzero for composite types if this is a by-reference type. */ |
| #define TYPE_BY_REFERENCE_P(NODE) TYPE_LANG_FLAG_2 (NODE) |
| |
| /* For RECORD_TYPE, UNION_TYPE, and QUAL_UNION_TYPE, nonzero if this is the |
| type for an object whose type includes its template in addition to |
| its value (only true for RECORD_TYPE). */ |
| #define TYPE_CONTAINS_TEMPLATE_P(NODE) \ |
| TYPE_LANG_FLAG_3 (RECORD_OR_UNION_CHECK (NODE)) |
| |
| /* For INTEGER_TYPE, nonzero if this really represents a VAX |
| floating-point type. */ |
| #define TYPE_VAX_FLOATING_POINT_P(NODE) \ |
| TYPE_LANG_FLAG_3 (INTEGER_TYPE_CHECK (NODE)) |
| |
| /* True if NODE is a thin pointer. */ |
| #define TYPE_THIN_POINTER_P(NODE) \ |
| (POINTER_TYPE_P (NODE) \ |
| && TREE_CODE (TREE_TYPE (NODE)) == RECORD_TYPE \ |
| && TYPE_CONTAINS_TEMPLATE_P (TREE_TYPE (NODE))) |
| |
| /* True if TYPE is either a fat or thin pointer to an unconstrained |
| array. */ |
| #define TYPE_FAT_OR_THIN_POINTER_P(NODE) \ |
| (TYPE_FAT_POINTER_P (NODE) || TYPE_THIN_POINTER_P (NODE)) |
| |
| /* For INTEGER_TYPEs, nonzero if the type has a biased representation. */ |
| #define TYPE_BIASED_REPRESENTATION_P(NODE) \ |
| TYPE_LANG_FLAG_4 (INTEGER_TYPE_CHECK (NODE)) |
| |
| /* For ARRAY_TYPEs, nonzero if the array type has Convention_Fortran. */ |
| #define TYPE_CONVENTION_FORTRAN_P(NODE) \ |
| TYPE_LANG_FLAG_4 (ARRAY_TYPE_CHECK (NODE)) |
| |
| /* For FUNCTION_TYPEs, nonzero if the function returns by reference. */ |
| #define TYPE_RETURNS_BY_REF_P(NODE) \ |
| TYPE_LANG_FLAG_4 (FUNCTION_TYPE_CHECK (NODE)) |
| |
| /* For FUNCTION_TYPEs, nonzero if function returns by being passed a pointer |
| to a place to store its result. */ |
| #define TYPE_RETURNS_BY_TARGET_PTR_P(NODE) \ |
| TYPE_LANG_FLAG_5 (FUNCTION_TYPE_CHECK (NODE)) |
| |
| /* For VOID_TYPE, ENUMERAL_TYPE, UNION_TYPE, and RECORD_TYPE, nonzero if this |
| is a dummy type, made to correspond to a private or incomplete type. */ |
| #define TYPE_DUMMY_P(NODE) TYPE_LANG_FLAG_4 (NODE) |
| |
| /* True if TYPE is such a dummy type. */ |
| #define TYPE_IS_DUMMY_P(NODE) \ |
| ((TREE_CODE (NODE) == VOID_TYPE || TREE_CODE (NODE) == RECORD_TYPE \ |
| || TREE_CODE (NODE) == UNION_TYPE || TREE_CODE (NODE) == ENUMERAL_TYPE) \ |
| && TYPE_DUMMY_P (NODE)) |
| |
| /* For an INTEGER_TYPE, nonzero if TYPE_ACTUAL_BOUNDS is present. */ |
| #define TYPE_HAS_ACTUAL_BOUNDS_P(NODE) \ |
| TYPE_LANG_FLAG_5 (INTEGER_TYPE_CHECK (NODE)) |
| |
| /* For a RECORD_TYPE, nonzero if this was made just to supply needed |
| padding or alignment. */ |
| #define TYPE_IS_PADDING_P(NODE) TYPE_LANG_FLAG_5 (RECORD_TYPE_CHECK (NODE)) |
| |
| /* This field is only defined for FUNCTION_TYPE nodes. If the Ada |
| subprogram contains no parameters passed by copy in/copy out then this |
| field is 0. Otherwise it points to a list of nodes used to specify the |
| return values of the out (or in out) parameters that qualify to be passed |
| by copy in copy out. It is a CONSTRUCTOR. For a full description of the |
| cico parameter passing mechanism refer to the routine gnat_to_gnu_entity. */ |
| #define TYPE_CI_CO_LIST(NODE) TYPE_LANG_SLOT_1 (FUNCTION_TYPE_CHECK (NODE)) |
| |
| /* For an INTEGER_TYPE with TYPE_MODULAR_P, this is the value of the |
| modulus. */ |
| #define TYPE_MODULUS(NODE) GET_TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE)) |
| #define SET_TYPE_MODULUS(NODE, X) \ |
| SET_TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE), X) |
| |
| /* For an INTEGER_TYPE that is the TYPE_DOMAIN of some ARRAY_TYPE, points to |
| the type corresponding to the Ada index type. */ |
| #define TYPE_INDEX_TYPE(NODE) \ |
| GET_TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE)) |
| #define SET_TYPE_INDEX_TYPE(NODE, X) \ |
| SET_TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE), X) |
| |
| /* For an INTEGER_TYPE with TYPE_VAX_FLOATING_POINT_P, stores the |
| Digits_Value. */ |
| #define TYPE_DIGITS_VALUE(NODE) \ |
| GET_TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE)) |
| #define SET_TYPE_DIGITS_VALUE(NODE, X) \ |
| SET_TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE), X) |
| |
| /* For numeric types, stores the RM_Size of the type. */ |
| #define TYPE_RM_SIZE_NUM(NODE) TYPE_LANG_SLOT_1 (NUMERICAL_TYPE_CHECK (NODE)) |
| |
| #define TYPE_RM_SIZE(NODE) \ |
| (INTEGRAL_TYPE_P (NODE) || TREE_CODE (NODE) == REAL_TYPE \ |
| ? TYPE_RM_SIZE_NUM (NODE) : 0) |
| |
| /* For a RECORD_TYPE that is a fat pointer, point to the type for the |
| unconstrained object. Likewise for a RECORD_TYPE that is pointed |
| to by a thin pointer. */ |
| #define TYPE_UNCONSTRAINED_ARRAY(NODE) \ |
| GET_TYPE_LANG_SPECIFIC (RECORD_TYPE_CHECK (NODE)) |
| #define SET_TYPE_UNCONSTRAINED_ARRAY(NODE, X) \ |
| SET_TYPE_LANG_SPECIFIC (RECORD_TYPE_CHECK (NODE), X) |
| |
| /* For other RECORD_TYPEs and all UNION_TYPEs and QUAL_UNION_TYPEs, the Ada |
| size of the object. This differs from the GCC size in that it does not |
| include any rounding up to the alignment of the type. */ |
| #define TYPE_ADA_SIZE(NODE) \ |
| GET_TYPE_LANG_SPECIFIC (RECORD_OR_UNION_CHECK (NODE)) |
| #define SET_TYPE_ADA_SIZE(NODE, X) \ |
| SET_TYPE_LANG_SPECIFIC (RECORD_OR_UNION_CHECK (NODE), X) |
| |
| /* For an INTEGER_TYPE with TYPE_HAS_ACTUAL_BOUNDS_P or an ARRAY_TYPE, this is |
| the index type that should be used when the actual bounds are required for |
| a template. This is used in the case of packed arrays. */ |
| #define TYPE_ACTUAL_BOUNDS(NODE) \ |
| GET_TYPE_LANG_SPECIFIC (TREE_CHECK2 (NODE, INTEGER_TYPE, ARRAY_TYPE)) |
| #define SET_TYPE_ACTUAL_BOUNDS(NODE, X) \ |
| SET_TYPE_LANG_SPECIFIC (TREE_CHECK2 (NODE, INTEGER_TYPE, ARRAY_TYPE), X) |
| |
| /* In an UNCONSTRAINED_ARRAY_TYPE, points to the record containing both |
| the template and object. |
| |
| ??? We also put this on an ENUMERAL_TYPE that's dummy. Technically, |
| this is a conflict on the minval field, but there doesn't seem to be |
| simple fix, so we'll live with this kludge for now. */ |
| #define TYPE_OBJECT_RECORD_TYPE(NODE) \ |
| (TREE_CHECK2 ((NODE), UNCONSTRAINED_ARRAY_TYPE, ENUMERAL_TYPE)->type.minval) |
| |
| /* Nonzero in a FUNCTION_DECL that represents a stubbed function |
| discriminant. */ |
| #define DECL_STUBBED_P(NODE) DECL_LANG_FLAG_0 (FUNCTION_DECL_CHECK (NODE)) |
| |
| /* Nonzero in a VAR_DECL if it is guaranteed to be constant after having |
| been elaborated and TREE_READONLY is not set on it. */ |
| #define DECL_READONLY_ONCE_ELAB(NODE) DECL_LANG_FLAG_0 (VAR_DECL_CHECK (NODE)) |
| |
| /* Nonzero if this decl is always used by reference; i.e., an INDIRECT_REF |
| is needed to access the object. */ |
| #define DECL_BY_REF_P(NODE) DECL_LANG_FLAG_1 (NODE) |
| |
| /* Nonzero if this decl is a PARM_DECL for an Ada array being passed to a |
| foreign convention subprogram. */ |
| #define DECL_BY_COMPONENT_PTR_P(NODE) DECL_LANG_FLAG_2 (PARM_DECL_CHECK (NODE)) |
| |
| /* Nonzero in a FIELD_DECL that is a dummy built for some internal reason. */ |
| #define DECL_INTERNAL_P(NODE) DECL_LANG_FLAG_3 (FIELD_DECL_CHECK (NODE)) |
| |
| /* Nonzero in a FUNCTION_DECL that corresponds to an elaboration procedure. */ |
| #define DECL_ELABORATION_PROC_P(NODE) \ |
| DECL_LANG_FLAG_3 (FUNCTION_DECL_CHECK (NODE)) |
| |
| /* Nonzero if this is a decl for a pointer that points to something which |
| is readonly. Used mostly for fat pointers. */ |
| #define DECL_POINTS_TO_READONLY_P(NODE) DECL_LANG_FLAG_4 (NODE) |
| |
| /* Nonzero in a FIELD_DECL if there was a record rep clause. */ |
| #define DECL_HAS_REP_P(NODE) DECL_LANG_FLAG_5 (FIELD_DECL_CHECK (NODE)) |
| |
| /* Nonzero in a PARM_DECL if we are to pass by descriptor. */ |
| #define DECL_BY_DESCRIPTOR_P(NODE) DECL_LANG_FLAG_5 (PARM_DECL_CHECK (NODE)) |
| |
| /* Nonzero in a VAR_DECL if it is a pointer renaming a global object. */ |
| #define DECL_RENAMING_GLOBAL_P(NODE) DECL_LANG_FLAG_5 (VAR_DECL_CHECK (NODE)) |
| |
| /* In a CONST_DECL, points to a VAR_DECL that is allocatable to |
| memory. Used when a scalar constant is aliased or has its |
| address taken. */ |
| #define DECL_CONST_CORRESPONDING_VAR(NODE) \ |
| GET_DECL_LANG_SPECIFIC (CONST_DECL_CHECK (NODE)) |
| #define SET_DECL_CONST_CORRESPONDING_VAR(NODE, X) \ |
| SET_DECL_LANG_SPECIFIC (CONST_DECL_CHECK (NODE), X) |
| |
| /* In a FIELD_DECL, points to the FIELD_DECL that was the ultimate |
| source of the decl. */ |
| #define DECL_ORIGINAL_FIELD(NODE) \ |
| GET_DECL_LANG_SPECIFIC (FIELD_DECL_CHECK (NODE)) |
| #define SET_DECL_ORIGINAL_FIELD(NODE, X) \ |
| SET_DECL_LANG_SPECIFIC (FIELD_DECL_CHECK (NODE), X) |
| |
| /* In a VAR_DECL, points to the object being renamed if the VAR_DECL is a |
| renaming pointer, otherwise 0. Note that this object is guaranteed to |
| be protected against multiple evaluations. */ |
| #define DECL_RENAMED_OBJECT(NODE) \ |
| GET_DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE)) |
| #define SET_DECL_RENAMED_OBJECT(NODE, X) \ |
| SET_DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE), X) |
| |
| /* In a FIELD_DECL corresponding to a discriminant, contains the |
| discriminant number. */ |
| #define DECL_DISCRIMINANT_NUMBER(NODE) DECL_INITIAL (FIELD_DECL_CHECK (NODE)) |
| |
| /* Define fields and macros for statements. |
| |
| Start by defining which tree codes are used for statements. */ |
| #define IS_STMT(NODE) (STATEMENT_CLASS_P (NODE)) |
| #define IS_ADA_STMT(NODE) (IS_STMT (NODE) \ |
| && TREE_CODE (NODE) >= STMT_STMT) |
| |
| #define STMT_STMT_STMT(NODE) TREE_OPERAND_CHECK_CODE (NODE, STMT_STMT, 0) |
| #define LOOP_STMT_TOP_COND(NODE) TREE_OPERAND_CHECK_CODE (NODE, LOOP_STMT, 0) |
| #define LOOP_STMT_BOT_COND(NODE) TREE_OPERAND_CHECK_CODE (NODE, LOOP_STMT, 1) |
| #define LOOP_STMT_UPDATE(NODE) TREE_OPERAND_CHECK_CODE (NODE, LOOP_STMT, 2) |
| #define LOOP_STMT_BODY(NODE) TREE_OPERAND_CHECK_CODE (NODE, LOOP_STMT, 3) |
| #define LOOP_STMT_LABEL(NODE) TREE_OPERAND_CHECK_CODE (NODE, LOOP_STMT, 4) |
| #define EXIT_STMT_COND(NODE) TREE_OPERAND_CHECK_CODE (NODE, EXIT_STMT, 0) |
| #define EXIT_STMT_LABEL(NODE) TREE_OPERAND_CHECK_CODE (NODE, EXIT_STMT, 1) |
| #define REGION_STMT_BODY(NODE) TREE_OPERAND_CHECK_CODE (NODE, REGION_STMT, 0) |
| #define REGION_STMT_HANDLE(NODE) TREE_OPERAND_CHECK_CODE (NODE, REGION_STMT, 1) |
| #define REGION_STMT_BLOCK(NODE) TREE_OPERAND_CHECK_CODE (NODE, REGION_STMT, 2) |
| #define HANDLER_STMT_ARG(NODE) TREE_OPERAND_CHECK_CODE (NODE, HANDLER_STMT, 0) |
| #define HANDLER_STMT_LIST(NODE) TREE_OPERAND_CHECK_CODE (NODE, HANDLER_STMT, 1) |
| #define HANDLER_STMT_BLOCK(NODE) TREE_OPERAND_CHECK_CODE(NODE, HANDLER_STMT, 2) |
