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 ident *id_underscore;
35 static struct obstack obst;
37 static void mangle_type(type_t *type);
39 static char get_atomic_type_mangle(atomic_type_kind_t kind)
42 case ATOMIC_TYPE_INVALID: break;
43 case ATOMIC_TYPE_VOID: return 'v';
44 case ATOMIC_TYPE_BOOL: return 'b';
45 case ATOMIC_TYPE_CHAR: return 'c';
46 case ATOMIC_TYPE_SCHAR: return 'a';
47 case ATOMIC_TYPE_UCHAR: return 'h';
48 case ATOMIC_TYPE_INT: return 'i';
49 case ATOMIC_TYPE_UINT: return 'j';
50 case ATOMIC_TYPE_SHORT: return 's';
51 case ATOMIC_TYPE_USHORT: return 't';
52 case ATOMIC_TYPE_LONG: return 'l';
53 case ATOMIC_TYPE_ULONG: return 'm';
54 case ATOMIC_TYPE_LONGLONG: return 'x';
55 case ATOMIC_TYPE_ULONGLONG: return 'y';
56 case ATOMIC_TYPE_LONG_DOUBLE: return 'e';
57 case ATOMIC_TYPE_FLOAT: return 'f';
58 case ATOMIC_TYPE_DOUBLE: return 'd';
60 panic("invalid atomic type in mangler");
63 static void mangle_atomic_type(const atomic_type_t *type)
65 obstack_1grow(&obst, get_atomic_type_mangle(type->akind));
68 static void mangle_pointer_type(const pointer_type_t *type)
70 obstack_1grow(&obst, 'P');
71 mangle_type(type->points_to);
74 static void mangle_function_type(const function_type_t *type)
76 obstack_1grow(&obst, 'F');
77 if (type->linkage == LINKAGE_C) {
78 obstack_1grow(&obst, 'Y');
81 mangle_type(type->return_type);
83 function_parameter_t *parameter = type->parameters;
84 for ( ; parameter != NULL; parameter = parameter->next) {
85 mangle_type(parameter->type);
88 obstack_1grow(&obst, 'z');
90 if (type->unspecified_parameters)
91 panic("can't mangle unspecified parameter types");
92 if (type->kr_style_parameters)
93 panic("can't mangle kr_style_parameters type");
95 obstack_1grow(&obst, 'E');
98 static void mangle_qualifiers(type_qualifiers_t qualifiers)
100 if (qualifiers & TYPE_QUALIFIER_CONST)
101 obstack_1grow(&obst, 'K');
102 if (qualifiers & TYPE_QUALIFIER_VOLATILE)
103 obstack_1grow(&obst, 'V');
104 if (qualifiers & TYPE_QUALIFIER_RESTRICT)
105 obstack_1grow(&obst, 'r');
107 /* handle MS extended qualifiers? */
110 static void mangle_type(type_t *orig_type)
112 type_t *type = skip_typeref(orig_type);
114 mangle_qualifiers(type->base.qualifiers);
116 switch (type->kind) {
118 mangle_atomic_type(&type->atomic);
121 mangle_pointer_type(&type->pointer);
124 mangle_function_type(&type->function);
127 panic("invalid type encountered while mangling");
129 panic("error type encountered while mangling");
133 panic("typeref not resolved while manging?!?");
138 case TYPE_COMPOUND_STRUCT:
139 case TYPE_COMPOUND_UNION:
142 panic("no mangling for this type implemented yet");
145 panic("invalid type encountered while mangling");
148 static void mangle_entity(entity_t *entity)
150 obstack_1grow(&obst, '_');
151 obstack_1grow(&obst, 'Z');
153 /* TODO: mangle scope */
155 symbol_t *symbol = entity->base.symbol;
156 obstack_printf(&obst, "%u%s", strlen(symbol->string), symbol->string);
158 if (entity->kind == ENTITY_FUNCTION) {
159 mangle_type(entity->declaration.type);
164 * Mangles an entity linker (ld) name for win32 usage.
166 * @param ent the entity to be mangled
167 * @param declaration the declaration
169 ident *create_name_win32(entity_t *entity)
171 struct obstack *o = &obst;
173 assert(is_declaration(entity));
175 if (entity->declaration.modifiers & DM_DLLIMPORT) {
176 /* add prefix for imported symbols */
177 obstack_printf(o, "__imp_");
180 if (entity->kind == ENTITY_FUNCTION) {
181 cc_kind_t cc = entity->declaration.type->function.calling_convention;
183 /* calling convention prefix */
187 case CC_STDCALL: obstack_1grow(o, '_'); break;
188 case CC_FASTCALL: obstack_1grow(o, '@'); break;
189 default: panic("unhandled calling convention");
192 switch (entity->declaration.type->function.linkage) {
193 case LINKAGE_INVALID:
197 obstack_printf(o, "%s", entity->base.symbol->string);
201 mangle_entity(entity);
205 /* calling convention suffix */
213 ir_type *irtype = get_ir_type(entity->declaration.type);
215 for (int i = get_method_n_params(irtype) - 1; i >= 0; --i) {
216 size += get_type_size_bytes(get_method_param_type(irtype, i));
218 obstack_printf(o, "@%zu\n", size);
223 panic("unhandled calling convention");
226 obstack_printf(o, "_%s", entity->base.symbol->string);
229 size_t size = obstack_object_size(o);
230 char *str = obstack_finish(o);
231 ident *id = new_id_from_chars(str, size);
232 obstack_free(o, str);
237 * Mangles an entity linker (ld) name for Linux ELF usage.
239 * @param ent the entity to be mangled
240 * @param declaration the declaration
242 ident *create_name_linux_elf(entity_t *entity)
244 bool needs_mangling = false;
246 if (entity->kind == ENTITY_FUNCTION) {
247 switch (entity->declaration.type->function.linkage) {
248 case LINKAGE_INVALID: break;
249 case LINKAGE_C: break;
250 case LINKAGE_CXX: needs_mangling = true; break;
254 if (needs_mangling) {
255 mangle_entity(entity);
256 obstack_1grow(&obst, '\0');
257 char *str = obstack_finish(&obst);
259 ident *id = new_id_from_str(str);
260 obstack_free(&obst, str);
265 return new_id_from_str(entity->base.symbol->string);
269 * Mangles an entity linker (ld) name for Mach-O usage.
271 * @param ent the entity to be mangled
272 * @param declaration the declaration
274 ident *create_name_macho(entity_t *entity)
276 ident *id = new_id_from_str(entity->base.symbol->string);
277 return id_mangle(id_underscore, id);
280 void init_mangle(void)
282 id_underscore = new_id_from_chars("_", 1);
287 void exit_mangle(void)
289 obstack_free(&obst, NULL);