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_class_enum_type(const entity_base_t *ent)
108 const symbol_t *sym = ent->symbol;
110 const char *name = sym->string;
111 obstack_printf(&obst, "%zu%s", strlen(name), name);
113 /* TODO need the first typedef name here */
114 panic("mangling of unnamed compound types not implemented yet");
118 static void mangle_qualifiers(type_qualifiers_t qualifiers)
120 if (qualifiers & TYPE_QUALIFIER_RESTRICT)
121 obstack_1grow(&obst, 'r');
122 if (qualifiers & TYPE_QUALIFIER_VOLATILE)
123 obstack_1grow(&obst, 'V');
124 if (qualifiers & TYPE_QUALIFIER_CONST)
125 obstack_1grow(&obst, 'K');
127 /* handle MS extended qualifiers? */
130 static void mangle_type(type_t *orig_type)
132 type_t *type = skip_typeref(orig_type);
134 mangle_qualifiers(type->base.qualifiers);
136 switch (type->kind) {
138 mangle_atomic_type(&type->atomic);
141 mangle_pointer_type(&type->pointer);
144 mangle_function_type(&type->function);
146 case TYPE_COMPOUND_STRUCT:
147 case TYPE_COMPOUND_UNION:
148 mangle_class_enum_type(&type->compound.compound->base);
151 mangle_class_enum_type(&type->enumt.enume->base);
154 panic("invalid type encountered while mangling");
156 panic("error type encountered while mangling");
160 panic("typeref not resolved while manging?!?");
166 panic("no mangling for this type implemented yet");
169 panic("invalid type encountered while mangling");
172 static void mangle_entity(entity_t *entity)
174 obstack_1grow(&obst, '_');
175 obstack_1grow(&obst, 'Z');
177 /* TODO: mangle scope */
179 const char *name = entity->base.symbol->string;
180 obstack_printf(&obst, "%zu%s", strlen(name), name);
182 if (entity->kind == ENTITY_FUNCTION) {
183 mangle_parameters(&entity->declaration.type->function);
187 static ident *make_id_from_obst(void)
189 size_t size = obstack_object_size(&obst);
190 char *str = obstack_finish(&obst);
191 ident *id = new_id_from_chars(str, size);
192 obstack_free(&obst, str);
197 * Mangles an entity linker (ld) name for win32 usage.
199 * @param ent the entity to be mangled
200 * @param declaration the declaration
202 ident *create_name_win32(entity_t *entity)
204 struct obstack *o = &obst;
206 assert(is_declaration(entity));
208 if (entity->declaration.modifiers & DM_DLLIMPORT) {
209 /* add prefix for imported symbols */
210 obstack_printf(o, "__imp_");
213 if (entity->kind == ENTITY_FUNCTION) {
214 cc_kind_t cc = entity->declaration.type->function.calling_convention;
216 /* calling convention prefix */
220 case CC_STDCALL: obstack_1grow(o, '_'); break;
221 case CC_FASTCALL: obstack_1grow(o, '@'); break;
222 default: panic("unhandled calling convention");
225 switch (entity->declaration.type->function.linkage) {
226 case LINKAGE_INVALID:
230 obstack_printf(o, "%s", entity->base.symbol->string);
234 mangle_entity(entity);
238 /* calling convention suffix */
246 ir_type *irtype = get_ir_type(entity->declaration.type);
248 for (int i = get_method_n_params(irtype) - 1; i >= 0; --i) {
249 size += get_type_size_bytes(get_method_param_type(irtype, i));
251 obstack_printf(o, "@%zu", size);
256 panic("unhandled calling convention");
259 obstack_printf(o, "_%s", entity->base.symbol->string);
262 return make_id_from_obst();
266 * Mangles an entity linker (ld) name for Linux ELF usage.
268 * @param ent the entity to be mangled
269 * @param declaration the declaration
271 ident *create_name_linux_elf(entity_t *entity)
273 bool needs_mangling = false;
275 if (entity->kind == ENTITY_FUNCTION) {
276 switch (entity->declaration.type->function.linkage) {
277 case LINKAGE_INVALID: break;
278 case LINKAGE_C: break;
279 case LINKAGE_CXX: needs_mangling = true; break;
283 if (needs_mangling) {
284 mangle_entity(entity);
285 return make_id_from_obst();
288 return new_id_from_str(entity->base.symbol->string);
292 * Mangles an entity linker (ld) name for Mach-O usage.
294 * @param ent the entity to be mangled
295 * @param declaration the declaration
297 ident *create_name_macho(entity_t *entity)
299 obstack_printf(&obst, "_%s", entity->base.symbol->string);
300 return make_id_from_obst();
303 void init_mangle(void)
308 void exit_mangle(void)
310 obstack_free(&obst, NULL);