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_box ***************************************************************
 172
 173    Box a primitive of the given type.
 174
 175 *******************************************************************************/
 176
 177 java_handle_t *primitive_box(int type, imm_union value)
 178 {
 179         java_handle_t *o;
 180
 181         switch (type) {
 182         case PRIMITIVETYPE_BOOLEAN:
 183                 o = primitive_box_boolean(value.i);
 184                 break;
 185         case PRIMITIVETYPE_BYTE:
 186                 o = primitive_box_byte(value.i);
 187                 break;
 188         case PRIMITIVETYPE_CHAR:
 189                 o = primitive_box_char(value.i);
 190                 break;
 191         case PRIMITIVETYPE_SHORT:
 192                 o = primitive_box_short(value.i);
 193                 break;
 194         case PRIMITIVETYPE_INT:
 195                 o = primitive_box_int(value.i);
 196                 break;
 197         case PRIMITIVETYPE_LONG:
 198                 o = primitive_box_long(value.l);
 199                 break;
 200         case PRIMITIVETYPE_FLOAT:
 201                 o = primitive_box_float(value.f);
 202                 break;
 203         case PRIMITIVETYPE_DOUBLE:
 204                 o = primitive_box_double(value.d);
 205                 break;
 206         default:
 207                 vm_abort("primitive_box: invalid primitive type %d", type);
 208         }
 209
 210         return o;
 211 }
 212
 213
 214 /* primitive_unbox *************************************************************
 215
 216    Unbox a primitive of the given type.
 217
 218 *******************************************************************************/
 219
 220 imm_union primitive_unbox(int type, java_handle_t *o)
 221 {
 222         imm_union value;
 223
 224         switch (type) {
 225         case PRIMITIVETYPE_BOOLEAN:
 226                 value.i = primitive_unbox_boolean(o);
 227                 break;
 228         case PRIMITIVETYPE_BYTE:
 229                 value.i = primitive_unbox_byte(o);
 230                 break;
 231         case PRIMITIVETYPE_CHAR:
 232                 value.i = primitive_unbox_char(o);
 233                 break;
 234         case PRIMITIVETYPE_SHORT:
 235                 value.i = primitive_unbox_short(o);
 236                 break;
 237         case PRIMITIVETYPE_INT:
 238                 value.i = primitive_unbox_int(o);
 239                 break;
 240         case PRIMITIVETYPE_LONG:
 241                 value.l = primitive_unbox_long(o);
 242                 break;
 243         case PRIMITIVETYPE_FLOAT:
 244                 value.f = primitive_unbox_float(o);
 245                 break;
 246         case PRIMITIVETYPE_DOUBLE:
 247                 value.d = primitive_unbox_double(o);
 248                 break;
 249         default:
 250                 vm_abort("primitive_unbox: invalid primitive type %d", type);
 251         }
 252
 253         return value;
 254 }
 255
 256
 257 /* primitive_box_xxx ***********************************************************
 258
 259    Box a primitive type.
 260
 261 *******************************************************************************/
 262
 263 #define PRIMITIVE_BOX_TYPE(name, object, type)      \
 264 java_handle_t *primitive_box_##name(type value)     \
 265 {                                                   \
 266         java_handle_t      *o;                          \
 267         java_lang_##object *jo;                         \
 268                                                     \
 269         o = builtin_new(class_java_lang_##object);      \
 270                                                     \
 271         if (o == NULL)                                  \
 272                 return NULL;                                \
 273                                                     \
 274         jo = (java_lang_##object *) o;                  \
 275                                                     \
 276         LLNI_field_set_val(jo, value, value);           \
 277                                                     \
 278         return o;                                       \
 279 }
 280
 281 PRIMITIVE_BOX_TYPE(boolean, Boolean,   int32_t)
 282 PRIMITIVE_BOX_TYPE(byte,    Byte,      int32_t)
 283 PRIMITIVE_BOX_TYPE(char,    Character, int32_t)
 284 PRIMITIVE_BOX_TYPE(short,   Short,     int32_t)
 285 PRIMITIVE_BOX_TYPE(int,     Integer,   int32_t)
 286 PRIMITIVE_BOX_TYPE(long,    Long,      int64_t)
 287 PRIMITIVE_BOX_TYPE(float,   Float,     float)
 288 PRIMITIVE_BOX_TYPE(double,  Double,    double)
 289
 290
 291 /* primitive_unbox_xxx *********************************************************
 292
 293    Unbox a primitive type.
 294
 295 *******************************************************************************/
 296
 297 #define PRIMITIVE_UNBOX_TYPE(name, object, type)  \
 298 type primitive_unbox_##name(java_handle_t *o)     \
 299 {                                                 \
 300         java_lang_##object *jo;                       \
 301         type                value;                    \
 302                                                   \
 303         jo = (java_lang_##object *) o;                \
 304                                                   \
 305         LLNI_field_get_val(jo, value, value);         \
 306                                                   \
 307         return value;                                 \
 308 }
 309
 310 PRIMITIVE_UNBOX_TYPE(boolean, Boolean,   int32_t)
 311 PRIMITIVE_UNBOX_TYPE(byte,    Byte,      int32_t)
 312 PRIMITIVE_UNBOX_TYPE(char,    Character, int32_t)
 313 PRIMITIVE_UNBOX_TYPE(short,   Short,     int32_t)
 314 PRIMITIVE_UNBOX_TYPE(int,     Integer,   int32_t)
 315 PRIMITIVE_UNBOX_TYPE(long,    Long,      int64_t)
 316 PRIMITIVE_UNBOX_TYPE(float,   Float,     float)
 317 PRIMITIVE_UNBOX_TYPE(double,  Double,    double)
 318
 319
 320 /*
 321  * These are local overrides for various environment variables in Emacs.
 322  * Please do not remove this and leave it at the end of the file, where
 323  * Emacs will automagically detect them.
 324  * ---------------------------------------------------------------------
 325  * Local variables:
 326  * mode: c
 327  * indent-tabs-mode: t
 328  * c-basic-offset: 4
 329  * tab-width: 4
 330  * End:
 331  * vim:noexpandtab:sw=4:ts=4:
 332  */