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.
 196
 197 *******************************************************************************/
 198
 199 java_handle_t *primitive_box(int type, imm_union value)
 200 {
 201         java_handle_t *o;
 202
 203         switch (type) {
 204         case PRIMITIVETYPE_BOOLEAN:
 205                 o = primitive_box_boolean(value.i);
 206                 break;
 207         case PRIMITIVETYPE_BYTE:
 208                 o = primitive_box_byte(value.i);
 209                 break;
 210         case PRIMITIVETYPE_CHAR:
 211                 o = primitive_box_char(value.i);
 212                 break;
 213         case PRIMITIVETYPE_SHORT:
 214                 o = primitive_box_short(value.i);
 215                 break;
 216         case PRIMITIVETYPE_INT:
 217                 o = primitive_box_int(value.i);
 218                 break;
 219         case PRIMITIVETYPE_LONG:
 220                 o = primitive_box_long(value.l);
 221                 break;
 222         case PRIMITIVETYPE_FLOAT:
 223                 o = primitive_box_float(value.f);
 224                 break;
 225         case PRIMITIVETYPE_DOUBLE:
 226                 o = primitive_box_double(value.d);
 227                 break;
 228         default:
 229                 vm_abort("primitive_box: invalid primitive type %d", type);
 230         }
 231
 232         return o;
 233 }
 234
 235
 236 /* primitive_unbox *************************************************************
 237
 238    Unbox a primitive of the given type.
 239
 240 *******************************************************************************/
 241
 242 imm_union primitive_unbox(java_handle_t *o)
 243 {
 244         classinfo *c;
 245         int        type;
 246         imm_union  value;
 247
 248         c = o->vftbl->class;
 249
 250         type = primitive_type_get_by_wrapperclass(c);
 251
 252         switch (type) {
 253         case PRIMITIVETYPE_BOOLEAN:
 254                 value.i = primitive_unbox_boolean(o);
 255                 break;
 256         case PRIMITIVETYPE_BYTE:
 257                 value.i = primitive_unbox_byte(o);
 258                 break;
 259         case PRIMITIVETYPE_CHAR:
 260                 value.i = primitive_unbox_char(o);
 261                 break;
 262         case PRIMITIVETYPE_SHORT:
 263                 value.i = primitive_unbox_short(o);
 264                 break;
 265         case PRIMITIVETYPE_INT:
 266                 value.i = primitive_unbox_int(o);
 267                 break;
 268         case PRIMITIVETYPE_LONG:
 269                 value.l = primitive_unbox_long(o);
 270                 break;
 271         case PRIMITIVETYPE_FLOAT:
 272                 value.f = primitive_unbox_float(o);
 273                 break;
 274         case PRIMITIVETYPE_DOUBLE:
 275                 value.d = primitive_unbox_double(o);
 276                 break;
 277         default:
 278                 vm_abort("primitive_unbox: invalid primitive type %d", type);
 279         }
 280
 281         return value;
 282 }
 283
 284
 285 /* primitive_box_xxx ***********************************************************
 286
 287    Box a primitive type.
 288
 289 *******************************************************************************/
 290
 291 #define PRIMITIVE_BOX_TYPE(name, object, type)      \
 292 java_handle_t *primitive_box_##name(type value)     \
 293 {                                                   \
 294         java_handle_t      *o;                          \
 295         java_lang_##object *jo;                         \
 296                                                     \
 297         o = builtin_new(class_java_lang_##object);      \
 298                                                     \
 299         if (o == NULL)                                  \
 300                 return NULL;                                \
 301                                                     \
 302         jo = (java_lang_##object *) o;                  \
 303                                                     \
 304         LLNI_field_set_val(jo, value, value);           \
 305                                                     \
 306         return o;                                       \
 307 }
 308
 309 PRIMITIVE_BOX_TYPE(boolean, Boolean,   int32_t)
 310 PRIMITIVE_BOX_TYPE(byte,    Byte,      int32_t)
 311 PRIMITIVE_BOX_TYPE(char,    Character, int32_t)
 312 PRIMITIVE_BOX_TYPE(short,   Short,     int32_t)
 313 PRIMITIVE_BOX_TYPE(int,     Integer,   int32_t)
 314 PRIMITIVE_BOX_TYPE(long,    Long,      int64_t)
 315 PRIMITIVE_BOX_TYPE(float,   Float,     float)
 316 PRIMITIVE_BOX_TYPE(double,  Double,    double)
 317
 318
 319 /* primitive_unbox_xxx *********************************************************
 320
 321    Unbox a primitive type.
 322
 323 *******************************************************************************/
 324
 325 #define PRIMITIVE_UNBOX_TYPE(name, object, type)  \
 326 type primitive_unbox_##name(java_handle_t *o)     \
 327 {                                                 \
 328         java_lang_##object *jo;                       \
 329         type                value;                    \
 330                                                   \
 331         jo = (java_lang_##object *) o;                \
 332                                                   \
 333         LLNI_field_get_val(jo, value, value);         \
 334                                                   \
 335         return value;                                 \
 336 }
 337
 338 PRIMITIVE_UNBOX_TYPE(boolean, Boolean,   int32_t)
 339 PRIMITIVE_UNBOX_TYPE(byte,    Byte,      int32_t)
 340 PRIMITIVE_UNBOX_TYPE(char,    Character, int32_t)
 341 PRIMITIVE_UNBOX_TYPE(short,   Short,     int32_t)
 342 PRIMITIVE_UNBOX_TYPE(int,     Integer,   int32_t)
 343 PRIMITIVE_UNBOX_TYPE(long,    Long,      int64_t)
 344 PRIMITIVE_UNBOX_TYPE(float,   Float,     float)
 345 PRIMITIVE_UNBOX_TYPE(double,  Double,    double)
 346
 347
 348 /*
 349  * These are local overrides for various environment variables in Emacs.
 350  * Please do not remove this and leave it at the end of the file, where
 351  * Emacs will automagically detect them.
 352  * ---------------------------------------------------------------------
 353  * Local variables:
 354  * mode: c
 355  * indent-tabs-mode: t
 356  * c-basic-offset: 4
 357  * tab-width: 4
 358  * End:
 359  * vim:noexpandtab:sw=4:ts=4:
 360  */