2 * This file is part of cparser.
3 * Copyright (C) 2007-2008 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
22 #include <libfirm/firm.h>
29 #include "diagnostic.h"
31 #include "lang_features.h"
32 #include "adt/error.h"
34 static struct obstack obst;
36 static void mangle_type(type_t *type);
38 static char get_atomic_type_mangle(atomic_type_kind_t kind)
41 case ATOMIC_TYPE_INVALID: break;
42 case ATOMIC_TYPE_VOID: return 'v';
43 case ATOMIC_TYPE_BOOL: return 'b';
44 case ATOMIC_TYPE_CHAR: return 'c';
45 case ATOMIC_TYPE_SCHAR: return 'a';
46 case ATOMIC_TYPE_UCHAR: return 'h';
47 case ATOMIC_TYPE_INT: return 'i';
48 case ATOMIC_TYPE_UINT: return 'j';
49 case ATOMIC_TYPE_SHORT: return 's';
50 case ATOMIC_TYPE_USHORT: return 't';
51 case ATOMIC_TYPE_LONG: return 'l';
52 case ATOMIC_TYPE_ULONG: return 'm';
53 case ATOMIC_TYPE_LONGLONG: return 'x';
54 case ATOMIC_TYPE_ULONGLONG: return 'y';
55 case ATOMIC_TYPE_LONG_DOUBLE: return 'e';
56 case ATOMIC_TYPE_FLOAT: return 'f';
57 case ATOMIC_TYPE_DOUBLE: return 'd';
59 panic("invalid atomic type in mangler");
62 static void mangle_atomic_type(const atomic_type_t *type)
64 obstack_1grow(&obst, get_atomic_type_mangle(type->akind));
67 static void mangle_pointer_type(const pointer_type_t *type)
69 obstack_1grow(&obst, 'P');
70 mangle_type(type->points_to);
73 static void mangle_parameters(const function_type_t *type)
75 if (type->unspecified_parameters)
76 panic("can't mangle unspecified parameter types");
77 if (type->kr_style_parameters)
78 panic("can't mangle kr_style_parameters type");
80 const function_parameter_t *parameter = type->parameters;
81 if (parameter != NULL) {
82 for ( ; parameter != NULL; parameter = parameter->next) {
83 mangle_type(parameter->type);
86 obstack_1grow(&obst, 'z');
89 obstack_1grow(&obst, 'v');
93 static void mangle_function_type(const function_type_t *type)
95 obstack_1grow(&obst, 'F');
96 if (type->linkage == LINKAGE_C) {
97 obstack_1grow(&obst, 'Y');
100 mangle_type(type->return_type);
101 mangle_parameters(type);
103 obstack_1grow(&obst, 'E');
106 static void mangle_qualifiers(type_qualifiers_t qualifiers)
108 if (qualifiers & TYPE_QUALIFIER_RESTRICT)
109 obstack_1grow(&obst, 'r');
110 if (qualifiers & TYPE_QUALIFIER_VOLATILE)
111 obstack_1grow(&obst, 'V');
112 if (qualifiers & TYPE_QUALIFIER_CONST)
113 obstack_1grow(&obst, 'K');
115 /* handle MS extended qualifiers? */
118 static void mangle_type(type_t *orig_type)
120 type_t *type = skip_typeref(orig_type);
122 mangle_qualifiers(type->base.qualifiers);
124 switch (type->kind) {
126 mangle_atomic_type(&type->atomic);
129 mangle_pointer_type(&type->pointer);
132 mangle_function_type(&type->function);
135 panic("invalid type encountered while mangling");
137 panic("error type encountered while mangling");
141 panic("typeref not resolved while manging?!?");
146 case TYPE_COMPOUND_STRUCT:
147 case TYPE_COMPOUND_UNION:
150 panic("no mangling for this type implemented yet");
153 panic("invalid type encountered while mangling");
156 static void mangle_entity(entity_t *entity)
158 obstack_1grow(&obst, '_');
159 obstack_1grow(&obst, 'Z');
161 /* TODO: mangle scope */
163 symbol_t *symbol = entity->base.symbol;
164 obstack_printf(&obst, "%u%s", strlen(symbol->string), symbol->string);
166 if (entity->kind == ENTITY_FUNCTION) {
167 mangle_parameters(&entity->declaration.type->function);
171 static ident *make_id_from_obst(void)
173 size_t size = obstack_object_size(&obst);
174 char *str = obstack_finish(&obst);
175 ident *id = new_id_from_chars(str, size);
176 obstack_free(&obst, str);
181 * Mangles an entity linker (ld) name for win32 usage.
183 * @param ent the entity to be mangled
184 * @param declaration the declaration
186 ident *create_name_win32(entity_t *entity)
188 struct obstack *o = &obst;
190 assert(is_declaration(entity));
192 if (entity->declaration.modifiers & DM_DLLIMPORT) {
193 /* add prefix for imported symbols */
194 obstack_printf(o, "__imp_");
197 if (entity->kind == ENTITY_FUNCTION) {
198 cc_kind_t cc = entity->declaration.type->function.calling_convention;
200 /* calling convention prefix */
204 case CC_STDCALL: obstack_1grow(o, '_'); break;
205 case CC_FASTCALL: obstack_1grow(o, '@'); break;
206 default: panic("unhandled calling convention");
209 switch (entity->declaration.type->function.linkage) {
210 case LINKAGE_INVALID:
214 obstack_printf(o, "%s", entity->base.symbol->string);
218 mangle_entity(entity);
222 /* calling convention suffix */
230 ir_type *irtype = get_ir_type(entity->declaration.type);
232 for (int i = get_method_n_params(irtype) - 1; i >= 0; --i) {
233 size += get_type_size_bytes(get_method_param_type(irtype, i));
235 obstack_printf(o, "@%zu\n", size);
240 panic("unhandled calling convention");
243 obstack_printf(o, "_%s", entity->base.symbol->string);
246 return make_id_from_obst();
250 * Mangles an entity linker (ld) name for Linux ELF usage.
252 * @param ent the entity to be mangled
253 * @param declaration the declaration
255 ident *create_name_linux_elf(entity_t *entity)
257 bool needs_mangling = false;
259 if (entity->kind == ENTITY_FUNCTION) {
260 switch (entity->declaration.type->function.linkage) {
261 case LINKAGE_INVALID: break;
262 case LINKAGE_C: break;
263 case LINKAGE_CXX: needs_mangling = true; break;
267 if (needs_mangling) {
268 mangle_entity(entity);
269 return make_id_from_obst();
272 return new_id_from_str(entity->base.symbol->string);
276 * Mangles an entity linker (ld) name for Mach-O usage.
278 * @param ent the entity to be mangled
279 * @param declaration the declaration
281 ident *create_name_macho(entity_t *entity)
283 obstack_printf(&obst, "_%s", entity->base.symbol->string);
284 return make_id_from_obst();
287 void init_mangle(void)
292 void exit_mangle(void)
294 obstack_free(&obst, NULL);