tree get_tinfo_decl (tree type) { tree name; tree d; if (COMPLETE_TYPE_P (type) && TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST) { error ("cannot create type information for type %qT because " "its size is variable", type); return error_mark_node; } if (TREE_CODE (type) == METHOD_TYPE) type = build_function_type (TREE_TYPE (type), TREE_CHAIN (TYPE_ARG_TYPES (type))); /* For a class type, the variable is cached in the type node itself. */ if (CLASS_TYPE_P (type)) { d = CLASSTYPE_TYPEINFO_VAR (TYPE_MAIN_VARIANT (type)); if (d) return d; } name = mangle_typeinfo_for_type (type); d = IDENTIFIER_GLOBAL_VALUE (name); if (!d) { tree var_desc = get_pseudo_ti_desc (type); d = build_lang_decl (VAR_DECL, name, TINFO_PSEUDO_TYPE (var_desc)); SET_DECL_ASSEMBLER_NAME (d, name); /* Remember the type it is for. */ TREE_TYPE (name) = type; DECL_TINFO_P (d) = 1; DECL_ARTIFICIAL (d) = 1; #ifdef KEY /* g++ does not actually ignore it (note push operation below), so we cannot either */ if (!flag_spin_file) #endif DECL_IGNORED_P (d) = 1; TREE_READONLY (d) = 1; TREE_STATIC (d) = 1; /* Mark the variable as undefined -- but remember that we can define it later if we need to do so. */ DECL_EXTERNAL (d) = 1; DECL_NOT_REALLY_EXTERN (d) = 1; if (CLASS_TYPE_P (type)) CLASSTYPE_TYPEINFO_VAR (TYPE_MAIN_VARIANT (type)) = d; set_linkage_according_to_type (type, d); pushdecl_top_level_and_finish (d, NULL_TREE); /* Add decl to the global array of tinfo decls. */ VEC_safe_push (tree, unemitted_tinfo_decls, d); }
static bool decl_is_java_type (tree decl, int err) { bool r = (TYPE_PTR_P (decl) && TREE_CODE (TREE_TYPE (decl)) == RECORD_TYPE && TYPE_FOR_JAVA (TREE_TYPE (decl))); if (err) { if (TREE_CODE (decl) == REFERENCE_TYPE && TREE_CODE (TREE_TYPE (decl)) == RECORD_TYPE && TYPE_FOR_JAVA (TREE_TYPE (decl))) { /* Can't throw a reference. */ error ("type %qT is disallowed in Java %<throw%> or %<catch%>", decl); } if (r) { tree jthrow_node = IDENTIFIER_GLOBAL_VALUE (get_identifier ("jthrowable")); if (jthrow_node == NULL_TREE) fatal_error (input_location, "call to Java %<catch%> or %<throw%> with %<jthrowable%> undefined"); jthrow_node = TREE_TYPE (TREE_TYPE (jthrow_node)); if (! DERIVED_FROM_P (jthrow_node, TREE_TYPE (decl))) { /* Thrown object must be a Throwable. */ error ("type %qT is not derived from %<java::lang::Throwable%>", TREE_TYPE (decl)); } } } return r; }
static bool decl_is_java_type (tree decl, int err) { bool r = (TREE_CODE (decl) == POINTER_TYPE && TREE_CODE (TREE_TYPE (decl)) == RECORD_TYPE && TYPE_FOR_JAVA (TREE_TYPE (decl))); if (err) { if (TREE_CODE (decl) == REFERENCE_TYPE && TREE_CODE (TREE_TYPE (decl)) == RECORD_TYPE && TYPE_FOR_JAVA (TREE_TYPE (decl))) { /* Can't throw a reference. */ error ("type `%T' is disallowed in Java `throw' or `catch'", decl); } if (r) { tree jthrow_node = IDENTIFIER_GLOBAL_VALUE (get_identifier ("jthrowable")); if (jthrow_node == NULL_TREE) fatal_error ("call to Java `catch' or `throw' with `jthrowable' undefined"); jthrow_node = TREE_TYPE (TREE_TYPE (jthrow_node)); if (! DERIVED_FROM_P (jthrow_node, TREE_TYPE (decl))) { /* Thrown object must be a Throwable. */ error ("type `%T' is not derived from `java::lang::Throwable'", TREE_TYPE (decl)); } } } return r; }
static tree call_eh_info () { tree fn; fn = get_identifier ("__start_cp_handler"); if (IDENTIFIER_GLOBAL_VALUE (fn)) fn = IDENTIFIER_GLOBAL_VALUE (fn); else { tree t1, t, fields[7]; /* Declare cp_eh_info * __start_cp_handler (void), as defined in exception.cc. */ /* struct cp_eh_info. This must match exception.cc. Note that this type is not pushed anywhere. */ t1= make_aggr_type (RECORD_TYPE); fields[0] = build_decl (FIELD_DECL, get_identifier ("handler_label"), ptr_type_node); fields[1] = build_decl (FIELD_DECL, get_identifier ("dynamic_handler_chain"), ptr_type_node); fields[2] = build_decl (FIELD_DECL, get_identifier ("info"), ptr_type_node); fields[3] = build_decl (FIELD_DECL, get_identifier ("table_index"), ptr_type_node); /* N.B.: The fourth field LEN is expected to be the number of fields - 1, not the total number of fields. */ finish_builtin_type (t1, "eh_context", fields, 3, ptr_type_node); t1 = build_pointer_type (t1); t1= make_aggr_type (RECORD_TYPE); #ifdef TARG_XTENSA fields[0] = build_decl (FIELD_DECL, get_identifier ("version"), integer_type_node); /* N.B.: The fourth field LEN is expected to be the number of fields - 1, not the total number of fields. */ finish_builtin_type (t1, "__eh_info", fields, 0, ptr_type_node); #else fields[0] = build_decl (FIELD_DECL, get_identifier ("match_function"), ptr_type_node); fields[1] = build_decl (FIELD_DECL, get_identifier ("language"), short_integer_type_node); fields[2] = build_decl (FIELD_DECL, get_identifier ("version"), short_integer_type_node); /* N.B.: The fourth field LEN is expected to be the number of fields - 1, not the total number of fields. */ finish_builtin_type (t1, "__eh_info", fields, 2, ptr_type_node); #endif t = make_aggr_type (RECORD_TYPE); fields[0] = build_decl (FIELD_DECL, get_identifier ("eh_info"), t1); fields[1] = build_decl (FIELD_DECL, get_identifier ("value"), ptr_type_node); fields[2] = build_decl (FIELD_DECL, get_identifier ("type"), ptr_type_node); fields[3] = build_decl (FIELD_DECL, get_identifier ("cleanup"), build_pointer_type (build_function_type (ptr_type_node, tree_cons (NULL_TREE, ptr_type_node, void_list_node)))); fields[4] = build_decl (FIELD_DECL, get_identifier ("caught"), boolean_type_node); fields[5] = build_decl (FIELD_DECL, get_identifier ("next"), build_pointer_type (t)); fields[6] = build_decl (FIELD_DECL, get_identifier ("handlers"), long_integer_type_node); /* N.B.: The fourth field LEN is expected to be the number of fields - 1, not the total number of fields. */ finish_builtin_type (t, "cp_eh_info", fields, 6, ptr_type_node); t = build_pointer_type (t); /* And now the function. */ fn = push_library_fn (fn, build_function_type (t, void_list_node)); } return build_function_call (fn, NULL_TREE); }