src/vm/jit/parse.h

   1 /* src/vm/jit/parse.h - parser header
   2
   3    Copyright (C) 1996-2005, 2006 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    Contact: cacao@cacaojvm.org
  26
  27    Author:  Christian Thalinger
  28             Edwin Steiner
  29
  30    $Id: parse.h 7663 2007-04-04 22:14:42Z twisti $
  31
  32 */
  33
  34
  35 #ifndef _PARSE_H
  36 #define _PARSE_H
  37
  38 #include "config.h"
  39 #include "vm/types.h"
  40
  41 #include "vm/global.h"
  42 #include "vm/jit/codegen-common.h"
  43
  44
  45 /* macros for verifier checks during parsing **********************************/
  46
  47 #if defined(ENABLE_VERIFIER)
  48
  49 /* We have to check local variables indices here because they are             */
  50 /* used in stack.c to index the locals array.                                 */
  51
  52 #define INDEX_ONEWORD(num) \
  53     do { \
  54         if (((num) < 0) || ((num) >= m->maxlocals)) \
  55             goto throw_illegal_local_variable_number; \
  56     } while (0)
  57
  58 #define INDEX_TWOWORD(num) \
  59     do { \
  60         if (((num) < 0) || (((num) + 1) >= m->maxlocals)) \
  61             goto throw_illegal_local_variable_number; \
  62     } while (0)
  63
  64 /* CHECK_BYTECODE_INDEX(i) checks whether i is a valid bytecode index.        */
  65 /* The end of the bytecode (i == m->jcodelength) is considered valid.         */
  66
  67 #define CHECK_BYTECODE_INDEX(i) \
  68     do { \
  69         if (((i) < 0) || ((i) >= m->jcodelength)) \
  70                         goto throw_invalid_bytecode_index; \
  71     } while (0)
  72
  73 /* CHECK_BYTECODE_INDEX_EXCLUSIVE is used for the exclusive ends               */
  74 /* of exception handler ranges.                                                */
  75 #define CHECK_BYTECODE_INDEX_EXCLUSIVE(i) \
  76     do { \
  77         if ((i) < 0 || (i) > m->jcodelength) \
  78                         goto throw_invalid_bytecode_index; \
  79     } while (0)
  80
  81 #else /* !defined(ENABLE_VERIFIER) */
  82
  83 #define INDEX_ONEWORD(num)
  84 #define INDEX_TWOWORD(num)
  85 #define CHECK_BYTECODE_INDEX(i)
  86 #define CHECK_BYTECODE_INDEX_EXCLUSIVE(i)
  87
  88 #endif /* defined(ENABLE_VERIFIER) */
  89
  90
  91 /* basic block generating macro ***********************************************/
  92
  93 #define MARK_BASICBLOCK(pd, i)                                       \
  94     do {                                                             \
  95         (pd)->basicblockstart[(i)] = 1;                              \
  96     } while (0)
  97
  98 #define INSTRUCTIONS_CHECK(i)                                        \
  99     if ((ircount + (i)) > pd.instructionslength)                     \
 100         iptr = parse_realloc_instructions(&pd, ircount, (i))
 101
 102
 103 /* intermediate code generating macros ****************************************/
 104
 105 /* These macros ALWAYS set the following fields of *iptr to valid values:     */
 106 /*     iptr->opc                                                              */
 107 /*     iptr->flags                                                            */
 108 /*     iptr->line                                                             */
 109
 110 /* These macros do NOT touch the following fields of *iptr, unless a value is */
 111 /* given for them:                                                            */
 112 /*     iptr->s1                                                               */
 113 /*     iptr->sx                                                               */
 114 /*     iptr->dst                                                              */
 115
 116 /* The _PREPARE macros omit the PINC, so you can set additional fields        */
 117 /* afterwards.                                                                */
 118
 119 #define PINC                                                         \
 120     iptr++; ircount++
 121
 122 #define OP_PREPARE_FLAGS(o, f)                                       \
 123     iptr->opc         = (o);                                         \
 124     iptr->line        = currentline;                                 \
 125     iptr->flags.bits |= (f) | (ircount << INS_FLAG_ID_SHIFT);
 126
 127 #define OP_PREPARE_ZEROFLAGS(o)                                      \
 128     OP_PREPARE_FLAGS(o, 0)
 129
 130 #define OP_PREPARE(o)                                                \
 131     OP_PREPARE_ZEROFLAGS(o)
 132
 133 #define OP(o)                                                        \
 134     OP_PREPARE_ZEROFLAGS(o);                                         \
 135     PINC
 136
 137 #define OP_CHECK_EXCEPTION(o)                                        \
 138     OP_PREPARE_FLAGS(o, INS_FLAG_CHECK);                             \
 139     PINC
 140
 141 #define OP_LOADCONST_I(v)                                            \
 142     OP_PREPARE_ZEROFLAGS(ICMD_ICONST);                               \
 143     iptr->sx.val.i           = (v);                                  \
 144     PINC
 145
 146 #define OP_LOADCONST_L(v)                                            \
 147     OP_PREPARE_ZEROFLAGS(ICMD_LCONST);                               \
 148     iptr->sx.val.l           = (v);                                  \
 149     PINC
 150
 151 #define OP_LOADCONST_F(v)                                            \
 152     OP_PREPARE_ZEROFLAGS(ICMD_FCONST);                               \
 153     iptr->sx.val.f           = (v);                                  \
 154     PINC
 155
 156 #define OP_LOADCONST_D(v)                                            \
 157     OP_PREPARE_ZEROFLAGS(ICMD_DCONST);                               \
 158     iptr->sx.val.d           = (v);                                  \
 159     PINC
 160
 161 #define OP_LOADCONST_NULL()                                          \
 162     OP_PREPARE_FLAGS(ICMD_ACONST, INS_FLAG_CHECK);                   \
 163     iptr->sx.val.anyptr      = NULL;                                 \
 164     PINC
 165
 166 #define OP_LOADCONST_STRING(v)                                       \
 167     OP_PREPARE_FLAGS(ICMD_ACONST, INS_FLAG_CHECK);                   \
 168     iptr->sx.val.stringconst = (v);                                  \
 169     PINC
 170
 171 #define OP_LOADCONST_CLASSINFO_OR_CLASSREF_FLAGS(cl, cr, extraflags) \
 172     OP_PREPARE(ICMD_ACONST);                                         \
 173     if (cl) {                                                        \
 174         iptr->sx.val.c.cls   = (cl);                                 \
 175         iptr->flags.bits     |= INS_FLAG_CLASS | (extraflags);       \
 176     }                                                                \
 177     else {                                                           \
 178         iptr->sx.val.c.ref   = (cr);                                 \
 179         iptr->flags.bits     |= INS_FLAG_CLASS | INS_FLAG_UNRESOLVED \
 180                              | (extraflags);                         \
 181     }                                                                \
 182     PINC
 183
 184 #define OP_LOADCONST_CLASSINFO_OR_CLASSREF_CHECK(c, cr)              \
 185     OP_LOADCONST_CLASSINFO_OR_CLASSREF_FLAGS((c), (cr), INS_FLAG_CHECK)
 186
 187 #define OP_LOADCONST_CLASSINFO_OR_CLASSREF_NOCHECK(c, cr)            \
 188     OP_LOADCONST_CLASSINFO_OR_CLASSREF_FLAGS((c), (cr), 0)
 189
 190 #define OP_S3_CLASSINFO_OR_CLASSREF(o, c, cr, extraflags)            \
 191     OP_PREPARE(o);                                                   \
 192     if (c) {                                                         \
 193         iptr->sx.s23.s3.c.cls= (c);                                  \
 194         iptr->flags.bits     |= (extraflags);                        \
 195     }                                                                \
 196     else {                                                           \
 197         iptr->sx.s23.s3.c.ref= (cr);                                 \
 198         iptr->flags.bits     |= INS_FLAG_UNRESOLVED | (extraflags);  \
 199     }                                                                \
 200     PINC
 201
 202 #define OP_INSINDEX(o, iindex)                                       \
 203     OP_PREPARE_ZEROFLAGS(o);                                         \
 204     iptr->dst.insindex       = (iindex);                             \
 205     PINC
 206
 207 # define OP_LOCALINDEX(o,index)                                      \
 208     OP_PREPARE_ZEROFLAGS(o);                                         \
 209     iptr->s1.varindex      = (index);                                \
 210     PINC
 211
 212 # define OP_LOCALINDEX_I(o,index,v)                                  \
 213     OP_PREPARE_ZEROFLAGS(o);                                         \
 214     iptr->s1.varindex      = (index);                                \
 215     iptr->sx.val.i           = (v);                                  \
 216     PINC
 217
 218 # define LOCALTYPE_USED(index,type)                                  \
 219     do {                                                             \
 220         local_map[(index) * 5 + (type)] = 1;                         \
 221     } while (0)
 222
 223 #define OP_LOAD_ONEWORD(o,index,type)                                \
 224     do {                                                             \
 225         INDEX_ONEWORD(index);                                        \
 226         OP_LOCALINDEX(o,index);                                      \
 227         LOCALTYPE_USED(index,type);                                  \
 228     } while (0)
 229
 230 #define OP_LOAD_TWOWORD(o,index,type)                                \
 231     do {                                                             \
 232         INDEX_TWOWORD(index);                                        \
 233         OP_LOCALINDEX(o,index);                                      \
 234         LOCALTYPE_USED(index,type);                                  \
 235     } while (0)
 236
 237 # define OP_STORE_ONEWORD(o,index,type)                              \
 238     do {                                                             \
 239         INDEX_ONEWORD(index);                                        \
 240         OP_PREPARE_ZEROFLAGS(o);                                     \
 241         iptr->dst.varindex = (index);                                \
 242         LOCALTYPE_USED(index,type);                                  \
 243         PINC;                                                        \
 244     } while (0)
 245
 246 # define OP_STORE_TWOWORD(o,index,type)                              \
 247     do {                                                             \
 248         INDEX_TWOWORD(index);                                        \
 249         OP_PREPARE_ZEROFLAGS(o);                                     \
 250         iptr->dst.varindex = (index);                                \
 251         LOCALTYPE_USED(index,type);                                  \
 252         PINC;                                                        \
 253     } while (0)
 254
 255 #define OP_BUILTIN_CHECK_EXCEPTION(bte)                              \
 256     jd->isleafmethod         = false;                                \
 257     OP_PREPARE_FLAGS(ICMD_BUILTIN, INS_FLAG_CHECK);                  \
 258     iptr->sx.s23.s3.bte      = (bte);                                \
 259     PINC
 260
 261 #define OP_BUILTIN_NO_EXCEPTION(bte)                                 \
 262     jd->isleafmethod         = false;                                \
 263     OP_PREPARE_ZEROFLAGS(ICMD_BUILTIN);                              \
 264     iptr->sx.s23.s3.bte      = (bte);                                \
 265     PINC
 266
 267 #define OP_BUILTIN_ARITHMETIC(opcode, bte)                           \
 268     jd->isleafmethod         = false;                                \
 269     OP_PREPARE_FLAGS(opcode, INS_FLAG_CHECK);                        \
 270     iptr->sx.s23.s3.bte      = (bte);                                \
 271     PINC
 272
 273 /* CAUTION: You must set iptr->flags yourself when using this!                */
 274 #define OP_FMIREF_PREPARE(o, fmiref)                                 \
 275     OP_PREPARE(o);                                                   \
 276     iptr->sx.s23.s3.fmiref   = (fmiref);
 277
 278
 279 /* function prototypes ********************************************************/
 280
 281 bool parse(jitdata *jd);
 282
 283 #endif /* _PARSE_H */
 284
 285
 286 /*
 287  * These are local overrides for various environment variables in Emacs.
 288  * Please do not remove this and leave it at the end of the file, where
 289  * Emacs will automagically detect them.
 290  * ---------------------------------------------------------------------
 291  * Local variables:
 292  * mode: c
 293  * indent-tabs-mode: t
 294  * c-basic-offset: 4
 295  * tab-width: 4
 296  * End:
 297  * vim:noexpandtab:sw=4:ts=4:
 298  */
 299