src/vm/primitive.c

   1 /* src/vm/primitive.c - primitive types
   2
   3    Copyright (C) 2007 R. Grafl, A. Krall, C. Kruegel,
   4    C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
   5    E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
   6    J. Wenninger, Institut f. Computersprachen - TU Wien
   7
   8    This file is part of CACAO.
   9
  10    This program is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU General Public License as
  12    published by the Free Software Foundation; either version 2, or (at
  13    your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful, but
  16    WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  23    02110-1301, USA.
  24
  25    $Id: linker.c 8042 2007-06-07 17:43:29Z twisti $
  26
  27 */
  28
  29
  30 #include "config.h"
  31
  32 #include <assert.h>
  33 #include <stdint.h>
  34
  35 #include "native/jni.h"
  36 #include "native/llni.h"
  37
  38 #include "native/include/java_lang_Boolean.h"
  39 #include "native/include/java_lang_Byte.h"
  40 #include "native/include/java_lang_Short.h"
  41 #include "native/include/java_lang_Character.h"
  42 #include "native/include/java_lang_Integer.h"
  43 #include "native/include/java_lang_Long.h"
  44 #include "native/include/java_lang_Float.h"
  45 #include "native/include/java_lang_Double.h"
  46
  47 #include "vm/builtin.h"
  48 #include "vm/global.h"
  49 #include "vm/primitive.h"
  50 #include "vm/vm.h"
  51
  52 #include "vmcore/class.h"
  53 #include "vmcore/utf8.h"
  54
  55
  56 /* primitive_class_get_by_name *************************************************
  57
  58    Returns the primitive class of the given class name.
  59
  60 *******************************************************************************/
  61
  62 classinfo *primitive_class_get_by_name(utf *name)
  63 {
  64         int i;
  65
  66         /* search table of primitive classes */
  67
  68         for (i = 0; i < PRIMITIVETYPE_COUNT; i++)
  69                 if (primitivetype_table[i].name == name)
  70                         return primitivetype_table[i].class_primitive;
  71
  72         /* keep compiler happy */
  73
  74         return NULL;
  75 }
  76
  77
  78 /* primitive_class_get_by_type *************************************************
  79
  80    Returns the primitive class of the given type.
  81
  82 *******************************************************************************/
  83
  84 classinfo *primitive_class_get_by_type(int type)
  85 {
  86         return primitivetype_table[type].class_primitive;
  87 }
  88
  89
  90 /* primitive_class_get_by_char *************************************************
  91
  92    Returns the primitive class of the given type.
  93
  94 *******************************************************************************/
  95
  96 classinfo *primitive_class_get_by_char(char ch)
  97 {
  98         int index;
  99
 100         switch (ch) {
 101         case 'I':
 102                 index = PRIMITIVETYPE_INT;
 103                 break;
 104         case 'J':
 105                 index = PRIMITIVETYPE_LONG;
 106                 break;
 107         case 'F':
 108                 index = PRIMITIVETYPE_FLOAT;
 109                 break;
 110         case 'D':
 111                 index = PRIMITIVETYPE_DOUBLE;
 112                 break;
 113         case 'B':
 114                 index = PRIMITIVETYPE_BYTE;
 115                 break;
 116         case 'C':
 117                 index = PRIMITIVETYPE_CHAR;
 118                 break;
 119         case 'S':
 120                 index = PRIMITIVETYPE_SHORT;
 121                 break;
 122         case 'Z':
 123                 index = PRIMITIVETYPE_BOOLEAN;
 124                 break;
 125         case 'V':
 126                 index = PRIMITIVETYPE_VOID;
 127                 break;
 128         default:
 129                 return NULL;
 130         }
 131
 132         return primitivetype_table[index].class_primitive;
 133 }
 134
 135
 136 /* primitive_arrayclass_get_by_name ********************************************
 137
 138    Returns the primitive array-class of the given primitive class
 139    name.
 140
 141 *******************************************************************************/
 142
 143 classinfo *primitive_arrayclass_get_by_name(utf *name)
 144 {
 145         int i;
 146
 147         /* search table of primitive classes */
 148
 149         for (i = 0; i < PRIMITIVETYPE_COUNT; i++)
 150                 if (primitivetype_table[i].name == name)
 151                         return primitivetype_table[i].arrayclass;
 152
 153         /* keep compiler happy */
 154
 155         return NULL;
 156 }
 157
 158
 159 /* primitive_arrayclass_get_by_type ********************************************
 160
 161    Returns the primitive array-class of the given type.
 162
 163 *******************************************************************************/
 164
 165 classinfo *primitive_arrayclass_get_by_type(int type)
 166 {
 167         return primitivetype_table[type].arrayclass;
 168 }
 169
 170
 171 /* primitive_type_get_by_wrapperclass ******************************************
 172
 173    Returns the primitive type of the given wrapper-class.
 174
 175 *******************************************************************************/
 176
 177 int primitive_type_get_by_wrapperclass(classinfo *c)
 178 {
 179         int i;
 180
 181         /* Search primitive table. */
 182
 183         for (i = 0; i < PRIMITIVETYPE_COUNT; i++)
 184                 if (primitivetype_table[i].class_wrap == c)
 185                         return i;
 186
 187         /* Invalid primitive wrapper-class. */
 188
 189         return -1;
 190 }
 191
 192
 193 /* primitive_box ***************************************************************
 194
 195    Box a primitive of the given type.  If the type is an object,
 196    simply return it.
 197
 198 *******************************************************************************/
 199
 200 java_handle_t *primitive_box(int type, imm_union value)
 201 {
 202         java_handle_t *o;
 203
 204         switch (type) {
 205         case PRIMITIVETYPE_BOOLEAN:
 206                 o = primitive_box_boolean(value.i);
 207                 break;
 208         case PRIMITIVETYPE_BYTE:
 209                 o = primitive_box_byte(value.i);
 210                 break;
 211         case PRIMITIVETYPE_CHAR:
 212                 o = primitive_box_char(value.i);
 213                 break;
 214         case PRIMITIVETYPE_SHORT:
 215                 o = primitive_box_short(value.i);
 216                 break;
 217         case PRIMITIVETYPE_INT:
 218                 o = primitive_box_int(value.i);
 219                 break;
 220         case PRIMITIVETYPE_LONG:
 221                 o = primitive_box_long(value.l);
 222                 break;
 223         case PRIMITIVETYPE_FLOAT:
 224                 o = primitive_box_float(value.f);
 225                 break;
 226         case PRIMITIVETYPE_DOUBLE:
 227                 o = primitive_box_double(value.d);
 228                 break;
 229         case PRIMITIVETYPE_VOID:
 230                 o = value.a;
 231                 break;
 232         default:
 233                 vm_abort("primitive_box: invalid primitive type %d", type);
 234         }
 235
 236         return o;
 237 }
 238
 239
 240 /* primitive_unbox *************************************************************
 241
 242    Unbox a primitive of the given type.  If the type is an object,
 243    simply return it.
 244
 245 *******************************************************************************/
 246
 247 imm_union primitive_unbox(java_handle_t *o)
 248 {
 249         classinfo *c;
 250         int        type;
 251         imm_union  value;
 252
 253         c = o->vftbl->class;
 254
 255         type = primitive_type_get_by_wrapperclass(c);
 256
 257         switch (type) {
 258         case PRIMITIVETYPE_BOOLEAN:
 259                 value.i = primitive_unbox_boolean(o);
 260                 break;
 261         case PRIMITIVETYPE_BYTE:
 262                 value.i = primitive_unbox_byte(o);
 263                 break;
 264         case PRIMITIVETYPE_CHAR:
 265                 value.i = primitive_unbox_char(o);
 266                 break;
 267         case PRIMITIVETYPE_SHORT:
 268                 value.i = primitive_unbox_short(o);
 269                 break;
 270         case PRIMITIVETYPE_INT:
 271                 value.i = primitive_unbox_int(o);
 272                 break;
 273         case PRIMITIVETYPE_LONG:
 274                 value.l = primitive_unbox_long(o);
 275                 break;
 276         case PRIMITIVETYPE_FLOAT:
 277                 value.f = primitive_unbox_float(o);
 278                 break;
 279         case PRIMITIVETYPE_DOUBLE:
 280                 value.d = primitive_unbox_double(o);
 281                 break;
 282         case -1:
 283                 /* If type is -1 the object is not a primitive box but a
 284                    normal object. */
 285                 value.a = o;
 286                 break;
 287         default:
 288                 vm_abort("primitive_unbox: invalid primitive type %d", type);
 289         }
 290
 291         return value;
 292 }
 293
 294
 295 /* primitive_box_xxx ***********************************************************
 296
 297    Box a primitive type.
 298
 299 *******************************************************************************/
 300
 301 #define PRIMITIVE_BOX_TYPE(name, object, type)      \
 302 java_handle_t *primitive_box_##name(type value)     \
 303 {                                                   \
 304         java_handle_t      *o;                          \
 305         java_lang_##object *jo;                         \
 306                                                     \
 307         o = builtin_new(class_java_lang_##object);      \
 308                                                     \
 309         if (o == NULL)                                  \
 310                 return NULL;                                \
 311                                                     \
 312         jo = (java_lang_##object *) o;                  \
 313                                                     \
 314         LLNI_field_set_val(jo, value, value);           \
 315                                                     \
 316         return o;                                       \
 317 }
 318
 319 PRIMITIVE_BOX_TYPE(boolean, Boolean,   int32_t)
 320 PRIMITIVE_BOX_TYPE(byte,    Byte,      int32_t)
 321 PRIMITIVE_BOX_TYPE(char,    Character, int32_t)
 322 PRIMITIVE_BOX_TYPE(short,   Short,     int32_t)
 323 PRIMITIVE_BOX_TYPE(int,     Integer,   int32_t)
 324 PRIMITIVE_BOX_TYPE(long,    Long,      int64_t)
 325 PRIMITIVE_BOX_TYPE(float,   Float,     float)
 326 PRIMITIVE_BOX_TYPE(double,  Double,    double)
 327
 328
 329 /* primitive_unbox_xxx *********************************************************
 330
 331    Unbox a primitive type.
 332
 333 *******************************************************************************/
 334
 335 #define PRIMITIVE_UNBOX_TYPE(name, object, type)  \
 336 type primitive_unbox_##name(java_handle_t *o)     \
 337 {                                                 \
 338         java_lang_##object *jo;                       \
 339         type                value;                    \
 340                                                   \
 341         jo = (java_lang_##object *) o;                \
 342                                                   \
 343         LLNI_field_get_val(jo, value, value);         \
 344                                                   \
 345         return value;                                 \
 346 }
 347
 348 PRIMITIVE_UNBOX_TYPE(boolean, Boolean,   int32_t)
 349 PRIMITIVE_UNBOX_TYPE(byte,    Byte,      int32_t)
 350 PRIMITIVE_UNBOX_TYPE(char,    Character, int32_t)
 351 PRIMITIVE_UNBOX_TYPE(short,   Short,     int32_t)
 352 PRIMITIVE_UNBOX_TYPE(int,     Integer,   int32_t)
 353 PRIMITIVE_UNBOX_TYPE(long,    Long,      int64_t)
 354 PRIMITIVE_UNBOX_TYPE(float,   Float,     float)
 355 PRIMITIVE_UNBOX_TYPE(double,  Double,    double)
 356
 357
 358 /*
 359  * These are local overrides for various environment variables in Emacs.
 360  * Please do not remove this and leave it at the end of the file, where
 361  * Emacs will automagically detect them.
 362  * ---------------------------------------------------------------------
 363  * Local variables:
 364  * mode: c
 365  * indent-tabs-mode: t
 366  * c-basic-offset: 4
 367  * tab-width: 4
 368  * End:
 369  * vim:noexpandtab:sw=4:ts=4:
 370  */