2 * This file is part of cparser.
3 * Copyright (C) 2007-2009 Matthias Braun <matze@braunis.de>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
29 #include "type_hash.h"
30 #include "adt/error.h"
32 #include "lang_features.h"
34 #include "diagnostic.h"
36 #include "driver/firm_cmdline.h"
38 /** The default calling convention. */
39 cc_kind_t default_calling_convention = CC_CDECL;
41 static struct obstack _type_obst;
42 struct obstack *type_obst = &_type_obst;
43 static bool print_implicit_array_size = false;
45 static void intern_print_type_pre(const type_t *type);
46 static void intern_print_type_post(const type_t *type);
48 typedef struct atomic_type_properties_t atomic_type_properties_t;
49 struct atomic_type_properties_t {
50 unsigned size; /**< type size in bytes */
51 unsigned alignment; /**< type alignment in bytes */
52 unsigned flags; /**< type flags from atomic_type_flag_t */
56 * Returns the size of a type node.
58 * @param kind the type kind
60 static size_t get_type_struct_size(type_kind_t kind)
62 static const size_t sizes[] = {
63 [TYPE_ATOMIC] = sizeof(atomic_type_t),
64 [TYPE_COMPLEX] = sizeof(complex_type_t),
65 [TYPE_IMAGINARY] = sizeof(imaginary_type_t),
66 [TYPE_BITFIELD] = sizeof(bitfield_type_t),
67 [TYPE_COMPOUND_STRUCT] = sizeof(compound_type_t),
68 [TYPE_COMPOUND_UNION] = sizeof(compound_type_t),
69 [TYPE_ENUM] = sizeof(enum_type_t),
70 [TYPE_FUNCTION] = sizeof(function_type_t),
71 [TYPE_POINTER] = sizeof(pointer_type_t),
72 [TYPE_ARRAY] = sizeof(array_type_t),
73 [TYPE_BUILTIN] = sizeof(builtin_type_t),
74 [TYPE_TYPEDEF] = sizeof(typedef_type_t),
75 [TYPE_TYPEOF] = sizeof(typeof_type_t),
77 assert(lengthof(sizes) == (int)TYPE_TYPEOF + 1);
78 assert(kind <= TYPE_TYPEOF);
79 assert(sizes[kind] != 0);
83 type_t *allocate_type_zero(type_kind_t kind)
85 size_t size = get_type_struct_size(kind);
86 type_t *res = obstack_alloc(type_obst, size);
88 res->base.kind = kind;
94 * Properties of atomic types.
96 static atomic_type_properties_t atomic_type_properties[ATOMIC_TYPE_LAST+1] = {
97 //ATOMIC_TYPE_INVALID = 0,
98 [ATOMIC_TYPE_VOID] = {
101 .flags = ATOMIC_TYPE_FLAG_NONE
103 [ATOMIC_TYPE_WCHAR_T] = {
104 .size = (unsigned)-1,
105 .alignment = (unsigned)-1,
106 /* signed flag will be set when known */
107 .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC,
109 [ATOMIC_TYPE_CHAR] = {
112 /* signed flag will be set when known */
113 .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC,
115 [ATOMIC_TYPE_SCHAR] = {
118 .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC
119 | ATOMIC_TYPE_FLAG_SIGNED,
121 [ATOMIC_TYPE_UCHAR] = {
124 .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC,
126 [ATOMIC_TYPE_SHORT] = {
129 .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC
130 | ATOMIC_TYPE_FLAG_SIGNED
132 [ATOMIC_TYPE_USHORT] = {
135 .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC,
137 [ATOMIC_TYPE_INT] = {
138 .size = (unsigned) -1,
139 .alignment = (unsigned) -1,
140 .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC
141 | ATOMIC_TYPE_FLAG_SIGNED,
143 [ATOMIC_TYPE_UINT] = {
144 .size = (unsigned) -1,
145 .alignment = (unsigned) -1,
146 .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC,
148 [ATOMIC_TYPE_LONG] = {
149 .size = (unsigned) -1,
150 .alignment = (unsigned) -1,
151 .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC
152 | ATOMIC_TYPE_FLAG_SIGNED,
154 [ATOMIC_TYPE_ULONG] = {
155 .size = (unsigned) -1,
156 .alignment = (unsigned) -1,
157 .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC,
159 [ATOMIC_TYPE_LONGLONG] = {
160 .size = (unsigned) -1,
161 .alignment = (unsigned) -1,
162 .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC
163 | ATOMIC_TYPE_FLAG_SIGNED,
165 [ATOMIC_TYPE_ULONGLONG] = {
166 .size = (unsigned) -1,
167 .alignment = (unsigned) -1,
168 .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC,
170 [ATOMIC_TYPE_BOOL] = {
171 .size = (unsigned) -1,
172 .alignment = (unsigned) -1,
173 .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC,
175 [ATOMIC_TYPE_FLOAT] = {
177 .alignment = (unsigned) -1,
178 .flags = ATOMIC_TYPE_FLAG_FLOAT | ATOMIC_TYPE_FLAG_ARITHMETIC
179 | ATOMIC_TYPE_FLAG_SIGNED,
181 [ATOMIC_TYPE_DOUBLE] = {
183 .alignment = (unsigned) -1,
184 .flags = ATOMIC_TYPE_FLAG_FLOAT | ATOMIC_TYPE_FLAG_ARITHMETIC
185 | ATOMIC_TYPE_FLAG_SIGNED,
187 [ATOMIC_TYPE_LONG_DOUBLE] = {
189 .alignment = (unsigned) -1,
190 .flags = ATOMIC_TYPE_FLAG_FLOAT | ATOMIC_TYPE_FLAG_ARITHMETIC
191 | ATOMIC_TYPE_FLAG_SIGNED,
193 /* complex and imaginary types are set in init_types */
196 void init_types(void)
198 obstack_init(type_obst);
200 atomic_type_properties_t *props = atomic_type_properties;
202 if (char_is_signed) {
203 props[ATOMIC_TYPE_CHAR].flags |= ATOMIC_TYPE_FLAG_SIGNED;
206 unsigned int_size = machine_size < 32 ? 2 : 4;
207 /* long is always 32bit on windows */
208 unsigned long_size = c_mode & _MS ? 4 : (machine_size < 64 ? 4 : 8);
209 unsigned llong_size = machine_size < 32 ? 4 : 8;
211 props[ATOMIC_TYPE_INT].size = int_size;
212 props[ATOMIC_TYPE_INT].alignment = int_size;
213 props[ATOMIC_TYPE_UINT].size = int_size;
214 props[ATOMIC_TYPE_UINT].alignment = int_size;
215 props[ATOMIC_TYPE_LONG].size = long_size;
216 props[ATOMIC_TYPE_LONG].alignment = long_size;
217 props[ATOMIC_TYPE_ULONG].size = long_size;
218 props[ATOMIC_TYPE_ULONG].alignment = long_size;
219 props[ATOMIC_TYPE_LONGLONG].size = llong_size;
220 props[ATOMIC_TYPE_LONGLONG].alignment = llong_size;
221 props[ATOMIC_TYPE_ULONGLONG].size = llong_size;
222 props[ATOMIC_TYPE_ULONGLONG].alignment = llong_size;
224 /* TODO: backend specific, need a way to query the backend for this.
225 * The following are good settings for x86 */
226 if (machine_size <= 32) {
227 props[ATOMIC_TYPE_FLOAT].alignment = 4;
228 props[ATOMIC_TYPE_DOUBLE].alignment = 4;
229 props[ATOMIC_TYPE_LONG_DOUBLE].alignment = 4;
230 props[ATOMIC_TYPE_LONGLONG].alignment = 4;
231 props[ATOMIC_TYPE_ULONGLONG].alignment = 4;
233 props[ATOMIC_TYPE_FLOAT].alignment = 4;
234 props[ATOMIC_TYPE_DOUBLE].alignment = 8;
235 props[ATOMIC_TYPE_LONG_DOUBLE].alignment = 8;
236 props[ATOMIC_TYPE_LONGLONG].alignment = 8;
237 props[ATOMIC_TYPE_ULONGLONG].alignment = 8;
239 if (force_long_double_size > 0) {
240 props[ATOMIC_TYPE_LONG_DOUBLE].size = force_long_double_size;
241 props[ATOMIC_TYPE_LONG_DOUBLE].alignment = force_long_double_size;
244 /* TODO: make this configurable for platforms which do not use byte sized
246 props[ATOMIC_TYPE_BOOL] = props[ATOMIC_TYPE_UCHAR];
248 props[ATOMIC_TYPE_WCHAR_T] = props[wchar_atomic_kind];
251 void exit_types(void)
253 obstack_free(type_obst, NULL);
256 void print_type_qualifiers(type_qualifiers_t qualifiers)
258 if (qualifiers & TYPE_QUALIFIER_CONST) {
259 print_string("const ");
261 if (qualifiers & TYPE_QUALIFIER_VOLATILE) {
262 print_string("volatile ");
264 if (qualifiers & TYPE_QUALIFIER_RESTRICT) {
265 print_string("restrict ");
269 const char *get_atomic_kind_name(atomic_type_kind_t kind)
272 case ATOMIC_TYPE_INVALID: break;
273 case ATOMIC_TYPE_VOID: return "void";
274 case ATOMIC_TYPE_WCHAR_T: return "wchar_t";
275 case ATOMIC_TYPE_BOOL: return c_mode & _CXX ? "bool" : "_Bool";
276 case ATOMIC_TYPE_CHAR: return "char";
277 case ATOMIC_TYPE_SCHAR: return "signed char";
278 case ATOMIC_TYPE_UCHAR: return "unsigned char";
279 case ATOMIC_TYPE_INT: return "int";
280 case ATOMIC_TYPE_UINT: return "unsigned int";
281 case ATOMIC_TYPE_SHORT: return "short";
282 case ATOMIC_TYPE_USHORT: return "unsigned short";
283 case ATOMIC_TYPE_LONG: return "long";
284 case ATOMIC_TYPE_ULONG: return "unsigned long";
285 case ATOMIC_TYPE_LONGLONG: return "long long";
286 case ATOMIC_TYPE_ULONGLONG: return "unsigned long long";
287 case ATOMIC_TYPE_LONG_DOUBLE: return "long double";
288 case ATOMIC_TYPE_FLOAT: return "float";
289 case ATOMIC_TYPE_DOUBLE: return "double";
291 return "INVALIDATOMIC";
295 * Prints the name of an atomic type kinds.
297 * @param kind The type kind.
299 static void print_atomic_kinds(atomic_type_kind_t kind)
301 const char *s = get_atomic_kind_name(kind);
306 * Prints the name of an atomic type.
308 * @param type The type.
310 static void print_atomic_type(const atomic_type_t *type)
312 print_type_qualifiers(type->base.qualifiers);
313 print_atomic_kinds(type->akind);
317 * Prints the name of a complex type.
319 * @param type The type.
321 static void print_complex_type(const complex_type_t *type)
323 print_type_qualifiers(type->base.qualifiers);
324 print_string("_Complex");
325 print_atomic_kinds(type->akind);
329 * Prints the name of an imaginary type.
331 * @param type The type.
333 static void print_imaginary_type(const imaginary_type_t *type)
335 print_type_qualifiers(type->base.qualifiers);
336 print_string("_Imaginary ");
337 print_atomic_kinds(type->akind);
341 * Print the first part (the prefix) of a type.
343 * @param type The type to print.
345 static void print_function_type_pre(const function_type_t *type)
347 switch (type->linkage) {
348 case LINKAGE_INVALID:
353 print_string("extern \"C\" ");
357 if (!(c_mode & _CXX))
358 print_string("extern \"C++\" ");
362 print_type_qualifiers(type->base.qualifiers);
364 intern_print_type_pre(type->return_type);
366 cc_kind_t cc = type->calling_convention;
369 case CC_CDECL: print_string(" __cdecl"); break;
370 case CC_STDCALL: print_string(" __stdcall"); break;
371 case CC_FASTCALL: print_string(" __fastcall"); break;
372 case CC_THISCALL: print_string(" __thiscall"); break;
374 if (default_calling_convention != CC_CDECL) {
375 /* show the default calling convention if its not cdecl */
376 cc = default_calling_convention;
384 * Print the second part (the postfix) of a type.
386 * @param type The type to print.
388 static void print_function_type_post(const function_type_t *type,
389 const scope_t *parameters)
393 if (parameters == NULL) {
394 function_parameter_t *parameter = type->parameters;
395 for( ; parameter != NULL; parameter = parameter->next) {
401 print_type(parameter->type);
404 entity_t *parameter = parameters->entities;
405 for (; parameter != NULL; parameter = parameter->base.next) {
406 if (parameter->kind != ENTITY_PARAMETER)
414 const type_t *const type = parameter->declaration.type;
416 print_string(parameter->base.symbol->string);
418 print_type_ext(type, parameter->base.symbol, NULL);
422 if (type->variadic) {
430 if (first && !type->unspecified_parameters) {
431 print_string("void");
435 intern_print_type_post(type->return_type);
439 * Prints the prefix part of a pointer type.
441 * @param type The pointer type.
443 static void print_pointer_type_pre(const pointer_type_t *type)
445 type_t const *const points_to = type->points_to;
446 intern_print_type_pre(points_to);
447 if (points_to->kind == TYPE_ARRAY || points_to->kind == TYPE_FUNCTION)
449 variable_t *const variable = type->base_variable;
450 if (variable != NULL) {
451 print_string(" __based(");
452 print_string(variable->base.base.symbol->string);
456 type_qualifiers_t const qual = type->base.qualifiers;
459 print_type_qualifiers(qual);
463 * Prints the postfix part of a pointer type.
465 * @param type The pointer type.
467 static void print_pointer_type_post(const pointer_type_t *type)
469 type_t const *const points_to = type->points_to;
470 if (points_to->kind == TYPE_ARRAY || points_to->kind == TYPE_FUNCTION)
472 intern_print_type_post(points_to);
476 * Prints the prefix part of a reference type.
478 * @param type The reference type.
480 static void print_reference_type_pre(const reference_type_t *type)
482 type_t const *const refers_to = type->refers_to;
483 intern_print_type_pre(refers_to);
484 if (refers_to->kind == TYPE_ARRAY || refers_to->kind == TYPE_FUNCTION)
490 * Prints the postfix part of a reference type.
492 * @param type The reference type.
494 static void print_reference_type_post(const reference_type_t *type)
496 type_t const *const refers_to = type->refers_to;
497 if (refers_to->kind == TYPE_ARRAY || refers_to->kind == TYPE_FUNCTION)
499 intern_print_type_post(refers_to);
503 * Prints the prefix part of an array type.
505 * @param type The array type.
507 static void print_array_type_pre(const array_type_t *type)
509 intern_print_type_pre(type->element_type);
513 * Prints the postfix part of an array type.
515 * @param type The array type.
517 static void print_array_type_post(const array_type_t *type)
520 if (type->is_static) {
521 print_string("static ");
523 print_type_qualifiers(type->base.qualifiers);
524 if (type->size_expression != NULL
525 && (print_implicit_array_size || !type->has_implicit_size)) {
526 print_expression(type->size_expression);
529 intern_print_type_post(type->element_type);
533 * Prints the postfix part of a bitfield type.
535 * @param type The array type.
537 static void print_bitfield_type_post(const bitfield_type_t *type)
540 print_expression(type->size_expression);
541 intern_print_type_post(type->base_type);
545 * Prints an enum definition.
547 * @param declaration The enum's type declaration.
549 void print_enum_definition(const enum_t *enume)
555 entity_t *entry = enume->base.next;
556 for( ; entry != NULL && entry->kind == ENTITY_ENUM_VALUE;
557 entry = entry->base.next) {
560 print_string(entry->base.symbol->string);
561 if (entry->enum_value.value != NULL) {
564 /* skip the implicit cast */
565 expression_t *expression = entry->enum_value.value;
566 if (expression->kind == EXPR_UNARY_CAST_IMPLICIT) {
567 expression = expression->unary.value;
569 print_expression(expression);
580 * Prints an enum type.
582 * @param type The enum type.
584 static void print_type_enum(const enum_type_t *type)
586 print_type_qualifiers(type->base.qualifiers);
587 print_string("enum ");
589 enum_t *enume = type->enume;
590 symbol_t *symbol = enume->base.symbol;
591 if (symbol != NULL) {
592 print_string(symbol->string);
594 print_enum_definition(enume);
599 * Print the compound part of a compound type.
601 void print_compound_definition(const compound_t *compound)
606 entity_t *entity = compound->members.entities;
607 for( ; entity != NULL; entity = entity->base.next) {
608 if (entity->kind != ENTITY_COMPOUND_MEMBER)
612 print_entity(entity);
619 if (compound->modifiers & DM_TRANSPARENT_UNION) {
620 print_string("__attribute__((__transparent_union__))");
625 * Prints a compound type.
627 * @param type The compound type.
629 static void print_compound_type(const compound_type_t *type)
631 print_type_qualifiers(type->base.qualifiers);
633 if (type->base.kind == TYPE_COMPOUND_STRUCT) {
634 print_string("struct ");
636 assert(type->base.kind == TYPE_COMPOUND_UNION);
637 print_string("union ");
640 compound_t *compound = type->compound;
641 symbol_t *symbol = compound->base.symbol;
642 if (symbol != NULL) {
643 print_string(symbol->string);
645 print_compound_definition(compound);
650 * Prints the prefix part of a typedef type.
652 * @param type The typedef type.
654 static void print_typedef_type_pre(const typedef_type_t *const type)
656 print_type_qualifiers(type->base.qualifiers);
657 print_string(type->typedefe->base.symbol->string);
661 * Prints the prefix part of a typeof type.
663 * @param type The typeof type.
665 static void print_typeof_type_pre(const typeof_type_t *const type)
667 print_string("typeof(");
668 if (type->expression != NULL) {
669 print_expression(type->expression);
671 print_type(type->typeof_type);
677 * Prints the prefix part of a type.
679 * @param type The type.
681 static void intern_print_type_pre(const type_t *const type)
685 print_string("<error>");
688 print_string("<invalid>");
691 print_type_enum(&type->enumt);
694 print_atomic_type(&type->atomic);
697 print_complex_type(&type->complex);
700 print_imaginary_type(&type->imaginary);
702 case TYPE_COMPOUND_STRUCT:
703 case TYPE_COMPOUND_UNION:
704 print_compound_type(&type->compound);
707 print_string(type->builtin.symbol->string);
710 print_function_type_pre(&type->function);
713 print_pointer_type_pre(&type->pointer);
716 print_reference_type_pre(&type->reference);
719 intern_print_type_pre(type->bitfield.base_type);
722 print_array_type_pre(&type->array);
725 print_typedef_type_pre(&type->typedeft);
728 print_typeof_type_pre(&type->typeoft);
731 print_string("unknown");
735 * Prints the postfix part of a type.
737 * @param type The type.
739 static void intern_print_type_post(const type_t *const type)
743 print_function_type_post(&type->function, NULL);
746 print_pointer_type_post(&type->pointer);
749 print_reference_type_post(&type->reference);
752 print_array_type_post(&type->array);
755 print_bitfield_type_post(&type->bitfield);
763 case TYPE_COMPOUND_STRUCT:
764 case TYPE_COMPOUND_UNION:
775 * @param type The type.
777 void print_type(const type_t *const type)
779 print_type_ext(type, NULL, NULL);
782 void print_type_ext(const type_t *const type, const symbol_t *symbol,
783 const scope_t *parameters)
786 print_string("nil type");
790 intern_print_type_pre(type);
791 if (symbol != NULL) {
793 print_string(symbol->string);
795 if (type->kind == TYPE_FUNCTION) {
796 print_function_type_post(&type->function, parameters);
798 intern_print_type_post(type);
805 * @param type The type to copy.
806 * @return A copy of the type.
808 * @note This does not produce a deep copy!
810 type_t *duplicate_type(const type_t *type)
812 size_t size = get_type_struct_size(type->kind);
814 type_t *copy = obstack_alloc(type_obst, size);
815 memcpy(copy, type, size);
816 copy->base.firm_type = NULL;
822 * Returns the unqualified type of a given type.
824 * @param type The type.
825 * @returns The unqualified type.
827 type_t *get_unqualified_type(type_t *type)
829 assert(!is_typeref(type));
831 if (type->base.qualifiers == TYPE_QUALIFIER_NONE)
834 type_t *unqualified_type = duplicate_type(type);
835 unqualified_type->base.qualifiers = TYPE_QUALIFIER_NONE;
837 return identify_new_type(unqualified_type);
840 type_t *get_qualified_type(type_t *orig_type, type_qualifiers_t const qual)
842 type_t *type = skip_typeref(orig_type);
845 if (is_type_array(type)) {
846 /* For array types the element type has to be adjusted */
847 type_t *element_type = type->array.element_type;
848 type_t *qual_element_type = get_qualified_type(element_type, qual);
850 if (qual_element_type == element_type)
853 copy = duplicate_type(type);
854 copy->array.element_type = qual_element_type;
855 } else if (is_type_valid(type)) {
856 if ((type->base.qualifiers & qual) == qual)
859 copy = duplicate_type(type);
860 copy->base.qualifiers |= qual;
865 return identify_new_type(copy);
869 * Check if a type is valid.
871 * @param type The type to check.
872 * @return true if type represents a valid type.
874 bool type_valid(const type_t *type)
876 return type->kind != TYPE_INVALID;
879 static bool test_atomic_type_flag(atomic_type_kind_t kind,
880 atomic_type_flag_t flag)
882 assert(kind <= ATOMIC_TYPE_LAST);
883 return (atomic_type_properties[kind].flags & flag) != 0;
887 * Returns true if the given type is an integer type.
889 * @param type The type to check.
890 * @return True if type is an integer type.
892 bool is_type_integer(const type_t *type)
894 assert(!is_typeref(type));
896 if (type->kind == TYPE_ENUM)
898 if (type->kind == TYPE_BITFIELD)
901 if (type->kind != TYPE_ATOMIC)
904 return test_atomic_type_flag(type->atomic.akind, ATOMIC_TYPE_FLAG_INTEGER);
908 * Returns true if the given type is an enum type.
910 * @param type The type to check.
911 * @return True if type is an enum type.
913 bool is_type_enum(const type_t *type)
915 assert(!is_typeref(type));
916 return type->kind == TYPE_ENUM;
920 * Returns true if the given type is an floating point type.
922 * @param type The type to check.
923 * @return True if type is a floating point type.
925 bool is_type_float(const type_t *type)
927 assert(!is_typeref(type));
929 if (type->kind != TYPE_ATOMIC)
932 return test_atomic_type_flag(type->atomic.akind, ATOMIC_TYPE_FLAG_FLOAT);
936 * Returns true if the given type is an complex type.
938 * @param type The type to check.
939 * @return True if type is a complex type.
941 bool is_type_complex(const type_t *type)
943 assert(!is_typeref(type));
945 if (type->kind != TYPE_ATOMIC)
948 return test_atomic_type_flag(type->atomic.akind, ATOMIC_TYPE_FLAG_COMPLEX);
952 * Returns true if the given type is a signed type.
954 * @param type The type to check.
955 * @return True if type is a signed type.
957 bool is_type_signed(const type_t *type)
959 assert(!is_typeref(type));
961 /* enum types are int for now */
962 if (type->kind == TYPE_ENUM)
964 if (type->kind == TYPE_BITFIELD)
965 return is_type_signed(type->bitfield.base_type);
967 if (type->kind != TYPE_ATOMIC)
970 return test_atomic_type_flag(type->atomic.akind, ATOMIC_TYPE_FLAG_SIGNED);
974 * Returns true if the given type represents an arithmetic type.
976 * @param type The type to check.
977 * @return True if type represents an arithmetic type.
979 bool is_type_arithmetic(const type_t *type)
981 assert(!is_typeref(type));
988 return test_atomic_type_flag(type->atomic.akind, ATOMIC_TYPE_FLAG_ARITHMETIC);
990 return test_atomic_type_flag(type->complex.akind, ATOMIC_TYPE_FLAG_ARITHMETIC);
992 return test_atomic_type_flag(type->imaginary.akind, ATOMIC_TYPE_FLAG_ARITHMETIC);
999 * Returns true if the given type is an integer or float type.
1001 * @param type The type to check.
1002 * @return True if type is an integer or float type.
1004 bool is_type_real(const type_t *type)
1007 return is_type_integer(type) || is_type_float(type);
1011 * Returns true if the given type represents a scalar type.
1013 * @param type The type to check.
1014 * @return True if type represents a scalar type.
1016 bool is_type_scalar(const type_t *type)
1018 assert(!is_typeref(type));
1020 switch (type->kind) {
1021 case TYPE_POINTER: return true;
1022 case TYPE_BUILTIN: return is_type_scalar(type->builtin.real_type);
1026 return is_type_arithmetic(type);
1030 * Check if a given type is incomplete.
1032 * @param type The type to check.
1033 * @return True if the given type is incomplete (ie. just forward).
1035 bool is_type_incomplete(const type_t *type)
1037 assert(!is_typeref(type));
1039 switch(type->kind) {
1040 case TYPE_COMPOUND_STRUCT:
1041 case TYPE_COMPOUND_UNION: {
1042 const compound_type_t *compound_type = &type->compound;
1043 return !compound_type->compound->complete;
1049 return type->array.size_expression == NULL
1050 && !type->array.size_constant;
1053 return type->atomic.akind == ATOMIC_TYPE_VOID;
1056 return type->complex.akind == ATOMIC_TYPE_VOID;
1058 case TYPE_IMAGINARY:
1059 return type->imaginary.akind == ATOMIC_TYPE_VOID;
1064 case TYPE_REFERENCE:
1071 panic("is_type_incomplete called without typerefs skipped");
1076 panic("invalid type found");
1079 bool is_type_object(const type_t *type)
1081 return !is_type_function(type) && !is_type_incomplete(type);
1084 bool is_builtin_va_list(type_t *type)
1086 type_t *tp = skip_typeref(type);
1088 return tp->kind == type_valist->kind &&
1089 tp->builtin.symbol == type_valist->builtin.symbol;
1093 * Check if two function types are compatible.
1095 static bool function_types_compatible(const function_type_t *func1,
1096 const function_type_t *func2)
1098 const type_t* const ret1 = skip_typeref(func1->return_type);
1099 const type_t* const ret2 = skip_typeref(func2->return_type);
1100 if (!types_compatible(ret1, ret2))
1103 if (func1->linkage != func2->linkage)
1106 cc_kind_t cc1 = func1->calling_convention;
1107 if (cc1 == CC_DEFAULT)
1108 cc1 = default_calling_convention;
1109 cc_kind_t cc2 = func2->calling_convention;
1110 if (cc2 == CC_DEFAULT)
1111 cc2 = default_calling_convention;
1116 if (func1->variadic != func2->variadic)
1119 /* can parameters be compared? */
1120 if ((func1->unspecified_parameters && !func1->kr_style_parameters)
1121 || (func2->unspecified_parameters && !func2->kr_style_parameters))
1124 /* TODO: handling of unspecified parameters not correct yet */
1126 /* all argument types must be compatible */
1127 function_parameter_t *parameter1 = func1->parameters;
1128 function_parameter_t *parameter2 = func2->parameters;
1129 for ( ; parameter1 != NULL && parameter2 != NULL;
1130 parameter1 = parameter1->next, parameter2 = parameter2->next) {
1131 type_t *parameter1_type = skip_typeref(parameter1->type);
1132 type_t *parameter2_type = skip_typeref(parameter2->type);
1134 parameter1_type = get_unqualified_type(parameter1_type);
1135 parameter2_type = get_unqualified_type(parameter2_type);
1137 if (!types_compatible(parameter1_type, parameter2_type))
1140 /* same number of arguments? */
1141 if (parameter1 != NULL || parameter2 != NULL)
1148 * Check if two array types are compatible.
1150 static bool array_types_compatible(const array_type_t *array1,
1151 const array_type_t *array2)
1153 type_t *element_type1 = skip_typeref(array1->element_type);
1154 type_t *element_type2 = skip_typeref(array2->element_type);
1155 if (!types_compatible(element_type1, element_type2))
1158 if (!array1->size_constant || !array2->size_constant)
1161 return array1->size == array2->size;
1165 * Check if two types are compatible.
1167 bool types_compatible(const type_t *type1, const type_t *type2)
1169 assert(!is_typeref(type1));
1170 assert(!is_typeref(type2));
1172 /* shortcut: the same type is always compatible */
1176 if (!is_type_valid(type1) || !is_type_valid(type2))
1179 if (type1->base.qualifiers != type2->base.qualifiers)
1181 if (type1->kind != type2->kind)
1184 switch (type1->kind) {
1186 return function_types_compatible(&type1->function, &type2->function);
1188 return type1->atomic.akind == type2->atomic.akind;
1190 return type1->complex.akind == type2->complex.akind;
1191 case TYPE_IMAGINARY:
1192 return type1->imaginary.akind == type2->imaginary.akind;
1194 return array_types_compatible(&type1->array, &type2->array);
1196 case TYPE_POINTER: {
1197 const type_t *const to1 = skip_typeref(type1->pointer.points_to);
1198 const type_t *const to2 = skip_typeref(type2->pointer.points_to);
1199 return types_compatible(to1, to2);
1202 case TYPE_REFERENCE: {
1203 const type_t *const to1 = skip_typeref(type1->reference.refers_to);
1204 const type_t *const to2 = skip_typeref(type2->reference.refers_to);
1205 return types_compatible(to1, to2);
1208 case TYPE_COMPOUND_STRUCT:
1209 case TYPE_COMPOUND_UNION: {
1216 /* TODO: not implemented */
1220 /* not sure if this makes sense or is even needed, implement it if you
1221 * really need it! */
1222 panic("type compatibility check for bitfield type");
1225 /* Hmm, the error type should be compatible to all other types */
1228 panic("invalid type found in compatible types");
1231 panic("typerefs not skipped in compatible types?!?");
1234 /* TODO: incomplete */
1239 * Skip all typerefs and return the underlying type.
1241 type_t *skip_typeref(type_t *type)
1243 type_qualifiers_t qualifiers = TYPE_QUALIFIER_NONE;
1246 switch (type->kind) {
1249 case TYPE_TYPEDEF: {
1250 qualifiers |= type->base.qualifiers;
1252 const typedef_type_t *typedef_type = &type->typedeft;
1253 if (typedef_type->resolved_type != NULL) {
1254 type = typedef_type->resolved_type;
1257 type = typedef_type->typedefe->type;
1261 qualifiers |= type->base.qualifiers;
1262 type = type->typeoft.typeof_type;
1270 if (qualifiers != TYPE_QUALIFIER_NONE) {
1271 type_t *const copy = duplicate_type(type);
1273 /* for const with typedefed array type the element type has to be
1275 if (is_type_array(copy)) {
1276 type_t *element_type = copy->array.element_type;
1277 element_type = duplicate_type(element_type);
1278 element_type->base.qualifiers |= qualifiers;
1279 copy->array.element_type = element_type;
1281 copy->base.qualifiers |= qualifiers;
1284 type = identify_new_type(copy);
1290 unsigned get_type_size(type_t *type)
1292 switch (type->kind) {
1298 return get_atomic_type_size(type->atomic.akind);
1300 return get_atomic_type_size(type->complex.akind) * 2;
1301 case TYPE_IMAGINARY:
1302 return get_atomic_type_size(type->imaginary.akind);
1303 case TYPE_COMPOUND_UNION:
1304 layout_union_type(&type->compound);
1305 return type->compound.compound->size;
1306 case TYPE_COMPOUND_STRUCT:
1307 layout_struct_type(&type->compound);
1308 return type->compound.compound->size;
1310 return get_atomic_type_size(type->enumt.akind);
1312 return 0; /* non-const (but "address-const") */
1313 case TYPE_REFERENCE:
1315 /* TODO: make configurable by backend */
1318 /* TODO: correct if element_type is aligned? */
1319 il_size_t element_size = get_type_size(type->array.element_type);
1320 return type->array.size * element_size;
1325 return get_type_size(type->builtin.real_type);
1327 return get_type_size(type->typedeft.typedefe->type);
1329 if (type->typeoft.typeof_type) {
1330 return get_type_size(type->typeoft.typeof_type);
1332 return get_type_size(type->typeoft.expression->base.type);
1335 panic("invalid type in get_type_size");
1338 unsigned get_type_alignment(type_t *type)
1340 switch (type->kind) {
1346 return get_atomic_type_alignment(type->atomic.akind);
1348 return get_atomic_type_alignment(type->complex.akind);
1349 case TYPE_IMAGINARY:
1350 return get_atomic_type_alignment(type->imaginary.akind);
1351 case TYPE_COMPOUND_UNION:
1352 layout_union_type(&type->compound);
1353 return type->compound.compound->alignment;
1354 case TYPE_COMPOUND_STRUCT:
1355 layout_struct_type(&type->compound);
1356 return type->compound.compound->alignment;
1358 return get_atomic_type_alignment(type->enumt.akind);
1360 /* what is correct here? */
1362 case TYPE_REFERENCE:
1364 /* TODO: make configurable by backend */
1367 return get_type_alignment(type->array.element_type);
1371 return get_type_alignment(type->builtin.real_type);
1372 case TYPE_TYPEDEF: {
1373 il_alignment_t alignment
1374 = get_type_alignment(type->typedeft.typedefe->type);
1375 if (type->typedeft.typedefe->alignment > alignment)
1376 alignment = type->typedeft.typedefe->alignment;
1381 if (type->typeoft.typeof_type) {
1382 return get_type_alignment(type->typeoft.typeof_type);
1384 return get_type_alignment(type->typeoft.expression->base.type);
1387 panic("invalid type in get_type_alignment");
1390 decl_modifiers_t get_type_modifiers(const type_t *type)
1392 switch(type->kind) {
1396 case TYPE_COMPOUND_STRUCT:
1397 case TYPE_COMPOUND_UNION:
1398 return type->compound.compound->modifiers;
1400 return type->function.modifiers;
1404 case TYPE_IMAGINARY:
1405 case TYPE_REFERENCE:
1411 return get_type_modifiers(type->builtin.real_type);
1412 case TYPE_TYPEDEF: {
1413 decl_modifiers_t modifiers = type->typedeft.typedefe->modifiers;
1414 modifiers |= get_type_modifiers(type->typedeft.typedefe->type);
1418 if (type->typeoft.typeof_type) {
1419 return get_type_modifiers(type->typeoft.typeof_type);
1421 return get_type_modifiers(type->typeoft.expression->base.type);
1424 panic("invalid type found in get_type_modifiers");
1427 type_qualifiers_t get_type_qualifier(const type_t *type, bool skip_array_type)
1429 type_qualifiers_t qualifiers = TYPE_QUALIFIER_NONE;
1432 switch (type->base.kind) {
1434 return TYPE_QUALIFIER_NONE;
1436 qualifiers |= type->base.qualifiers;
1437 const typedef_type_t *typedef_type = &type->typedeft;
1438 if (typedef_type->resolved_type != NULL)
1439 type = typedef_type->resolved_type;
1441 type = typedef_type->typedefe->type;
1444 type = type->typeoft.typeof_type;
1447 if (skip_array_type) {
1448 type = type->array.element_type;
1457 return type->base.qualifiers | qualifiers;
1460 unsigned get_atomic_type_size(atomic_type_kind_t kind)
1462 assert(kind <= ATOMIC_TYPE_LAST);
1463 return atomic_type_properties[kind].size;
1466 unsigned get_atomic_type_alignment(atomic_type_kind_t kind)
1468 assert(kind <= ATOMIC_TYPE_LAST);
1469 return atomic_type_properties[kind].alignment;
1472 unsigned get_atomic_type_flags(atomic_type_kind_t kind)
1474 assert(kind <= ATOMIC_TYPE_LAST);
1475 return atomic_type_properties[kind].flags;
1478 atomic_type_kind_t get_intptr_kind(void)
1480 if (machine_size <= 32)
1481 return ATOMIC_TYPE_INT;
1482 else if (machine_size <= 64)
1483 return ATOMIC_TYPE_LONG;
1485 return ATOMIC_TYPE_LONGLONG;
1488 atomic_type_kind_t get_uintptr_kind(void)
1490 if (machine_size <= 32)
1491 return ATOMIC_TYPE_UINT;
1492 else if (machine_size <= 64)
1493 return ATOMIC_TYPE_ULONG;
1495 return ATOMIC_TYPE_ULONGLONG;
1499 * Find the atomic type kind representing a given size (signed).
1501 atomic_type_kind_t find_signed_int_atomic_type_kind_for_size(unsigned size)
1503 static atomic_type_kind_t kinds[32];
1506 atomic_type_kind_t kind = kinds[size];
1507 if (kind == ATOMIC_TYPE_INVALID) {
1508 static const atomic_type_kind_t possible_kinds[] = {
1513 ATOMIC_TYPE_LONGLONG
1515 for (size_t i = 0; i < lengthof(possible_kinds); ++i) {
1516 if (get_atomic_type_size(possible_kinds[i]) == size) {
1517 kind = possible_kinds[i];
1527 * Find the atomic type kind representing a given size (signed).
1529 atomic_type_kind_t find_unsigned_int_atomic_type_kind_for_size(unsigned size)
1531 static atomic_type_kind_t kinds[32];
1534 atomic_type_kind_t kind = kinds[size];
1535 if (kind == ATOMIC_TYPE_INVALID) {
1536 static const atomic_type_kind_t possible_kinds[] = {
1541 ATOMIC_TYPE_ULONGLONG
1543 for (size_t i = 0; i < lengthof(possible_kinds); ++i) {
1544 if (get_atomic_type_size(possible_kinds[i]) == size) {
1545 kind = possible_kinds[i];
1555 * Hash the given type and return the "singleton" version
1558 type_t *identify_new_type(type_t *type)
1560 type_t *result = typehash_insert(type);
1561 if (result != type) {
1562 obstack_free(type_obst, type);
1568 * Creates a new atomic type.
1570 * @param akind The kind of the atomic type.
1571 * @param qualifiers Type qualifiers for the new type.
1573 type_t *make_atomic_type(atomic_type_kind_t akind, type_qualifiers_t qualifiers)
1575 type_t *type = obstack_alloc(type_obst, sizeof(atomic_type_t));
1576 memset(type, 0, sizeof(atomic_type_t));
1578 type->kind = TYPE_ATOMIC;
1579 type->base.qualifiers = qualifiers;
1580 type->atomic.akind = akind;
1582 return identify_new_type(type);
1586 * Creates a new complex type.
1588 * @param akind The kind of the atomic type.
1589 * @param qualifiers Type qualifiers for the new type.
1591 type_t *make_complex_type(atomic_type_kind_t akind, type_qualifiers_t qualifiers)
1593 type_t *type = obstack_alloc(type_obst, sizeof(complex_type_t));
1594 memset(type, 0, sizeof(complex_type_t));
1596 type->kind = TYPE_COMPLEX;
1597 type->base.qualifiers = qualifiers;
1598 type->complex.akind = akind;
1600 return identify_new_type(type);
1604 * Creates a new imaginary type.
1606 * @param akind The kind of the atomic type.
1607 * @param qualifiers Type qualifiers for the new type.
1609 type_t *make_imaginary_type(atomic_type_kind_t akind, type_qualifiers_t qualifiers)
1611 type_t *type = obstack_alloc(type_obst, sizeof(imaginary_type_t));
1612 memset(type, 0, sizeof(imaginary_type_t));
1614 type->kind = TYPE_IMAGINARY;
1615 type->base.qualifiers = qualifiers;
1616 type->imaginary.akind = akind;
1618 return identify_new_type(type);
1622 * Creates a new pointer type.
1624 * @param points_to The points-to type for the new type.
1625 * @param qualifiers Type qualifiers for the new type.
1627 type_t *make_pointer_type(type_t *points_to, type_qualifiers_t qualifiers)
1629 type_t *type = obstack_alloc(type_obst, sizeof(pointer_type_t));
1630 memset(type, 0, sizeof(pointer_type_t));
1632 type->kind = TYPE_POINTER;
1633 type->base.qualifiers = qualifiers;
1634 type->pointer.points_to = points_to;
1635 type->pointer.base_variable = NULL;
1637 return identify_new_type(type);
1641 * Creates a new reference type.
1643 * @param refers_to The referred-to type for the new type.
1645 type_t *make_reference_type(type_t *refers_to)
1647 type_t *type = obstack_alloc(type_obst, sizeof(reference_type_t));
1648 memset(type, 0, sizeof(reference_type_t));
1650 type->kind = TYPE_REFERENCE;
1651 type->base.qualifiers = 0;
1652 type->reference.refers_to = refers_to;
1654 return identify_new_type(type);
1658 * Creates a new based pointer type.
1660 * @param points_to The points-to type for the new type.
1661 * @param qualifiers Type qualifiers for the new type.
1662 * @param variable The based variable
1664 type_t *make_based_pointer_type(type_t *points_to,
1665 type_qualifiers_t qualifiers, variable_t *variable)
1667 type_t *type = obstack_alloc(type_obst, sizeof(pointer_type_t));
1668 memset(type, 0, sizeof(pointer_type_t));
1670 type->kind = TYPE_POINTER;
1671 type->base.qualifiers = qualifiers;
1672 type->pointer.points_to = points_to;
1673 type->pointer.base_variable = variable;
1675 return identify_new_type(type);
1679 type_t *make_array_type(type_t *element_type, size_t size,
1680 type_qualifiers_t qualifiers)
1682 type_t *type = obstack_alloc(type_obst, sizeof(array_type_t));
1683 memset(type, 0, sizeof(array_type_t));
1685 type->kind = TYPE_ARRAY;
1686 type->base.qualifiers = qualifiers;
1687 type->array.element_type = element_type;
1688 type->array.size = size;
1689 type->array.size_constant = true;
1691 return identify_new_type(type);
1694 static entity_t *pack_bitfield_members_big_endian(il_size_t *struct_offset,
1695 il_alignment_t *struct_alignment, bool packed, entity_t *first)
1697 type_t *current_base_type = NULL;
1698 il_size_t offset = *struct_offset;
1699 il_alignment_t alignment = *struct_alignment;
1700 size_t bit_offset = 0;
1703 panic("packed bitfields on big-endian arch not supported yet");
1706 for (member = first; member != NULL; member = member->base.next) {
1707 if (member->kind != ENTITY_COMPOUND_MEMBER)
1710 type_t *type = member->declaration.type;
1711 if (type->kind != TYPE_BITFIELD)
1714 size_t bit_size = type->bitfield.bit_size;
1715 type_t *base_type = skip_typeref(type->bitfield.base_type);
1717 /* see if we need to start a new "bucket" */
1718 if (base_type != current_base_type || bit_size > bit_offset) {
1719 if (current_base_type != NULL)
1720 offset += get_type_size(current_base_type);
1722 current_base_type = base_type;
1723 il_alignment_t base_alignment = get_type_alignment(base_type);
1724 il_alignment_t alignment_mask = base_alignment-1;
1725 if (base_alignment > alignment)
1726 alignment = base_alignment;
1727 offset = (offset + base_alignment-1) & ~alignment_mask;
1728 bit_offset = get_type_size(base_type) * BITS_PER_BYTE;
1729 assert(bit_offset >= bit_size);
1732 bit_offset -= bit_size;
1733 member->compound_member.offset = offset;
1734 member->compound_member.bit_offset = bit_offset;
1737 if (current_base_type != NULL)
1738 offset += get_type_size(current_base_type);
1740 *struct_offset = offset;
1741 *struct_alignment = alignment;
1745 static entity_t *pack_bitfield_members(il_size_t *struct_offset,
1746 il_alignment_t *struct_alignment,
1747 bool packed, entity_t *first)
1749 il_size_t offset = *struct_offset;
1750 il_alignment_t alignment = *struct_alignment;
1751 size_t bit_offset = 0;
1754 for (member = first; member != NULL; member = member->base.next) {
1755 if (member->kind != ENTITY_COMPOUND_MEMBER)
1758 type_t *type = member->declaration.type;
1759 if (type->kind != TYPE_BITFIELD)
1762 type_t *base_type = skip_typeref(type->bitfield.base_type);
1763 il_alignment_t base_alignment = get_type_alignment(base_type);
1764 il_alignment_t alignment_mask = base_alignment-1;
1765 if (base_alignment > alignment)
1766 alignment = base_alignment;
1768 size_t bit_size = type->bitfield.bit_size;
1770 bit_offset += (offset & alignment_mask) * BITS_PER_BYTE;
1771 offset &= ~alignment_mask;
1772 size_t base_size = get_type_size(base_type) * BITS_PER_BYTE;
1774 if (bit_offset + bit_size > base_size || bit_size == 0) {
1775 offset += (bit_offset+BITS_PER_BYTE-1) / BITS_PER_BYTE;
1776 offset = (offset + base_alignment-1) & ~alignment_mask;
1781 member->compound_member.offset = offset;
1782 member->compound_member.bit_offset = bit_offset;
1784 bit_offset += bit_size;
1785 offset += bit_offset / BITS_PER_BYTE;
1786 bit_offset %= BITS_PER_BYTE;
1792 *struct_offset = offset;
1793 *struct_alignment = alignment;
1797 void layout_struct_type(compound_type_t *type)
1799 assert(type->compound != NULL);
1801 compound_t *compound = type->compound;
1802 if (!compound->complete)
1804 if (type->compound->layouted)
1807 il_size_t offset = 0;
1808 il_alignment_t alignment = compound->alignment;
1809 bool need_pad = false;
1811 entity_t *entry = compound->members.entities;
1812 while (entry != NULL) {
1813 if (entry->kind != ENTITY_COMPOUND_MEMBER) {
1814 entry = entry->base.next;
1818 type_t *m_type = entry->declaration.type;
1819 type_t *skipped = skip_typeref(m_type);
1820 if (! is_type_valid(skipped)) {
1821 entry = entry->base.next;
1825 if (skipped->kind == TYPE_BITFIELD) {
1826 if (byte_order_big_endian) {
1827 entry = pack_bitfield_members_big_endian(&offset, &alignment,
1831 entry = pack_bitfield_members(&offset, &alignment,
1832 compound->packed, entry);
1837 il_alignment_t m_alignment = get_type_alignment(m_type);
1838 if (m_alignment > alignment)
1839 alignment = m_alignment;
1841 if (!compound->packed) {
1842 il_size_t new_offset = (offset + m_alignment-1) & -m_alignment;
1844 if (new_offset > offset) {
1846 offset = new_offset;
1850 entry->compound_member.offset = offset;
1851 offset += get_type_size(m_type);
1853 entry = entry->base.next;
1856 if (!compound->packed) {
1857 il_size_t new_offset = (offset + alignment-1) & -alignment;
1858 if (new_offset > offset) {
1860 offset = new_offset;
1865 if (warning.padded) {
1866 warningf(&compound->base.source_position, "'%T' needs padding",
1869 } else if (compound->packed && warning.packed) {
1870 warningf(&compound->base.source_position,
1871 "superfluous packed attribute on '%T'", type);
1874 compound->size = offset;
1875 compound->alignment = alignment;
1876 compound->layouted = true;
1879 void layout_union_type(compound_type_t *type)
1881 assert(type->compound != NULL);
1883 compound_t *compound = type->compound;
1884 if (! compound->complete)
1888 il_alignment_t alignment = compound->alignment;
1890 entity_t *entry = compound->members.entities;
1891 for (; entry != NULL; entry = entry->base.next) {
1892 if (entry->kind != ENTITY_COMPOUND_MEMBER)
1895 type_t *m_type = entry->declaration.type;
1896 if (! is_type_valid(skip_typeref(m_type)))
1899 entry->compound_member.offset = 0;
1900 il_size_t m_size = get_type_size(m_type);
1903 il_alignment_t m_alignment = get_type_alignment(m_type);
1904 if (m_alignment > alignment)
1905 alignment = m_alignment;
1907 size = (size + alignment - 1) & -alignment;
1909 compound->size = size;
1910 compound->alignment = alignment;
1913 static function_parameter_t *allocate_parameter(type_t *const type)
1915 function_parameter_t *const param
1916 = obstack_alloc(type_obst, sizeof(*param));
1917 memset(param, 0, sizeof(*param));
1922 type_t *make_function_2_type(type_t *return_type, type_t *argument_type1,
1923 type_t *argument_type2)
1925 function_parameter_t *const parameter2 = allocate_parameter(argument_type2);
1926 function_parameter_t *const parameter1 = allocate_parameter(argument_type1);
1927 parameter1->next = parameter2;
1929 type_t *type = allocate_type_zero(TYPE_FUNCTION);
1930 type->function.return_type = return_type;
1931 type->function.parameters = parameter1;
1932 type->function.linkage = LINKAGE_C;
1934 return identify_new_type(type);
1937 type_t *make_function_1_type(type_t *return_type, type_t *argument_type)
1939 function_parameter_t *const parameter = allocate_parameter(argument_type);
1941 type_t *type = allocate_type_zero(TYPE_FUNCTION);
1942 type->function.return_type = return_type;
1943 type->function.parameters = parameter;
1944 type->function.linkage = LINKAGE_C;
1946 return identify_new_type(type);
1949 type_t *make_function_1_type_variadic(type_t *return_type,
1950 type_t *argument_type)
1952 function_parameter_t *const parameter = allocate_parameter(argument_type);
1954 type_t *type = allocate_type_zero(TYPE_FUNCTION);
1955 type->function.return_type = return_type;
1956 type->function.parameters = parameter;
1957 type->function.variadic = true;
1958 type->function.linkage = LINKAGE_C;
1960 return identify_new_type(type);
1963 type_t *make_function_0_type(type_t *return_type)
1965 type_t *type = allocate_type_zero(TYPE_FUNCTION);
1966 type->function.return_type = return_type;
1967 type->function.parameters = NULL;
1968 type->function.linkage = LINKAGE_C;
1970 return identify_new_type(type);
1973 type_t *make_function_type(type_t *return_type, int n_types,
1974 type_t *const *argument_types,
1975 decl_modifiers_t modifiers)
1977 type_t *type = allocate_type_zero(TYPE_FUNCTION);
1978 type->function.return_type = return_type;
1979 type->function.modifiers |= modifiers;
1980 type->function.linkage = LINKAGE_C;
1982 function_parameter_t *last = NULL;
1983 for (int i = 0; i < n_types; ++i) {
1984 function_parameter_t *parameter = allocate_parameter(argument_types[i]);
1986 type->function.parameters = parameter;
1988 last->next = parameter;
1993 return identify_new_type(type);
1997 * Debug helper. Prints the given type to stdout.
1999 static __attribute__((unused))
2000 void dbg_type(const type_t *type)
2002 print_to_file(stderr);