1 /* 2 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "interpreter/bytecodes.hpp" 27 #include "memory/resourceArea.hpp" 28 #include "oops/method.hpp" 29 #ifdef TARGET_ARCH_x86 30 # include "bytes_x86.hpp" 31 #endif 32 #ifdef TARGET_ARCH_aarch64 33 # include "bytes_aarch64.hpp" 34 #endif 35 #ifdef TARGET_ARCH_sparc 36 # include "bytes_sparc.hpp" 37 #endif 38 #ifdef TARGET_ARCH_zero 39 # include "bytes_zero.hpp" 40 #endif 41 #ifdef TARGET_ARCH_arm 42 # include "bytes_arm.hpp" 43 #endif 44 #ifdef TARGET_ARCH_ppc 45 # include "bytes_ppc.hpp" 46 #endif 47 48 49 #if defined(WIN32) && (defined(_MSC_VER) && (_MSC_VER < 1600)) 50 // Windows AMD64 Compiler Hangs compiling this file 51 // unless optimization is off 52 #ifdef _M_AMD64 53 #pragma optimize ("", off) 54 #endif 55 #endif 56 57 58 bool Bytecodes::_is_initialized = false; 59 const char* Bytecodes::_name [Bytecodes::number_of_codes]; 60 BasicType Bytecodes::_result_type [Bytecodes::number_of_codes]; 61 s_char Bytecodes::_depth [Bytecodes::number_of_codes]; 62 u_char Bytecodes::_lengths [Bytecodes::number_of_codes]; 63 Bytecodes::Code Bytecodes::_java_code [Bytecodes::number_of_codes]; 64 u_short Bytecodes::_flags [(1<<BitsPerByte)*2]; 65 66 #ifdef ASSERT 67 bool Bytecodes::check_method(const Method* method, address bcp) { 68 return method->contains(bcp); 69 } 70 #endif 71 72 bool Bytecodes::check_must_rewrite(Bytecodes::Code code) { 73 assert(can_rewrite(code), "post-check only"); 74 75 // Some codes are conditionally rewriting. Look closely at them. 76 switch (code) { 77 case Bytecodes::_aload_0: 78 // Even if RewriteFrequentPairs is turned on, 79 // the _aload_0 code might delay its rewrite until 80 // a following _getfield rewrites itself. 81 return false; 82 83 case Bytecodes::_lookupswitch: 84 return false; // the rewrite is not done by the interpreter 85 86 case Bytecodes::_new: 87 // (Could actually look at the class here, but the profit would be small.) 88 return false; // the rewrite is not always done 89 } 90 91 // No other special cases. 92 return true; 93 } 94 95 Bytecodes::Code Bytecodes::code_at(Method* method, int bci) { 96 return code_at(method, method->bcp_from(bci)); 97 } 98 99 Bytecodes::Code Bytecodes::non_breakpoint_code_at(const Method* method, address bcp) { 100 assert(method != NULL, "must have the method for breakpoint conversion"); 101 assert(method->contains(bcp), "must be valid bcp in method"); 102 return method->orig_bytecode_at(method->bci_from(bcp)); 103 } 104 105 int Bytecodes::special_length_at(Bytecodes::Code code, address bcp, address end) { 106 switch (code) { 107 case _wide: 108 if (end != NULL && bcp + 1 >= end) { 109 return -1; // don't read past end of code buffer 110 } 111 return wide_length_for(cast(*(bcp + 1))); 112 case _tableswitch: 113 { address aligned_bcp = (address)round_to((intptr_t)bcp + 1, jintSize); 114 if (end != NULL && aligned_bcp + 3*jintSize >= end) { 115 return -1; // don't read past end of code buffer 116 } 117 jlong lo = (jint)Bytes::get_Java_u4(aligned_bcp + 1*jintSize); 118 jlong hi = (jint)Bytes::get_Java_u4(aligned_bcp + 2*jintSize); 119 jlong len = (aligned_bcp - bcp) + (3 + hi - lo + 1)*jintSize; 120 // only return len if it can be represented as a positive int; 121 // return -1 otherwise 122 return (len > 0 && len == (int)len) ? len : -1; 123 } 124 125 case _lookupswitch: // fall through 126 case _fast_binaryswitch: // fall through 127 case _fast_linearswitch: 128 { address aligned_bcp = (address)round_to((intptr_t)bcp + 1, jintSize); 129 if (end != NULL && aligned_bcp + 2*jintSize >= end) { 130 return -1; // don't read past end of code buffer 131 } 132 jlong npairs = (jint)Bytes::get_Java_u4(aligned_bcp + jintSize); 133 jlong len = (aligned_bcp - bcp) + (2 + 2*npairs)*jintSize; 134 // only return len if it can be represented as a positive int; 135 // return -1 otherwise 136 return (len > 0 && len == (int)len) ? len : -1; 137 } 138 } 139 // Note: Length functions must return <=0 for invalid bytecodes. 140 return 0; 141 } 142 143 // At a breakpoint instruction, this returns the breakpoint's length, 144 // otherwise, it's the same as special_length_at(). This is used by 145 // the RawByteCodeStream, which wants to see the actual bytecode 146 // values (including breakpoint). RawByteCodeStream is used by the 147 // verifier when reading in bytecode to verify. Other mechanisms that 148 // run at runtime (such as generateOopMaps) need to iterate over the code 149 // and don't expect to see breakpoints: they want to see the instruction 150 // which was replaced so that they can get the correct length and find 151 // the next bytecode. 152 // 153 // 'end' indicates the end of the code buffer, which we should not try to read 154 // past. 155 int Bytecodes::raw_special_length_at(address bcp, address end) { 156 Code code = code_or_bp_at(bcp); 157 if (code == _breakpoint) { 158 return 1; 159 } else { 160 return special_length_at(code, bcp, end); 161 } 162 } 163 164 165 166 void Bytecodes::def(Code code, const char* name, const char* format, const char* wide_format, BasicType result_type, int depth, bool can_trap) { 167 def(code, name, format, wide_format, result_type, depth, can_trap, code); 168 } 169 170 171 void Bytecodes::def(Code code, const char* name, const char* format, const char* wide_format, BasicType result_type, int depth, bool can_trap, Code java_code) { 172 assert(wide_format == NULL || format != NULL, "short form must exist if there's a wide form"); 173 int len = (format != NULL ? (int) strlen(format) : 0); 174 int wlen = (wide_format != NULL ? (int) strlen(wide_format) : 0); 175 _name [code] = name; 176 _result_type [code] = result_type; 177 _depth [code] = depth; 178 _lengths [code] = (wlen << 4) | (len & 0xF); 179 _java_code [code] = java_code; 180 int bc_flags = 0; 181 if (can_trap) bc_flags |= _bc_can_trap; 182 if (java_code != code) bc_flags |= _bc_can_rewrite; 183 _flags[(u1)code+0*(1<<BitsPerByte)] = compute_flags(format, bc_flags); 184 _flags[(u1)code+1*(1<<BitsPerByte)] = compute_flags(wide_format, bc_flags); 185 assert(is_defined(code) == (format != NULL), ""); 186 assert(wide_is_defined(code) == (wide_format != NULL), ""); 187 assert(length_for(code) == len, ""); 188 assert(wide_length_for(code) == wlen, ""); 189 } 190 191 192 // Format strings interpretation: 193 // 194 // b: bytecode 195 // c: signed constant, Java byte-ordering 196 // i: unsigned local index, Java byte-ordering (I = native byte ordering) 197 // j: unsigned CP cache index, Java byte-ordering (J = native byte ordering) 198 // k: unsigned CP index, Java byte-ordering 199 // o: branch offset, Java byte-ordering 200 // _: unused/ignored 201 // w: wide bytecode 202 // 203 // Note: The format strings are used for 2 purposes: 204 // 1. to specify the length of the bytecode 205 // (= number of characters in format string) 206 // 2. to derive bytecode format flags (_fmt_has_k, etc.) 207 // 208 // Note: For bytecodes with variable length, the format string is the empty string. 209 210 int Bytecodes::compute_flags(const char* format, int more_flags) { 211 if (format == NULL) return 0; // not even more_flags 212 int flags = more_flags; 213 const char* fp = format; 214 switch (*fp) { 215 case '\0': 216 flags |= _fmt_not_simple; // but variable 217 break; 218 case 'b': 219 flags |= _fmt_not_variable; // but simple 220 ++fp; // skip 'b' 221 break; 222 case 'w': 223 flags |= _fmt_not_variable | _fmt_not_simple; 224 ++fp; // skip 'w' 225 guarantee(*fp == 'b', "wide format must start with 'wb'"); 226 ++fp; // skip 'b' 227 break; 228 } 229 230 int has_nbo = 0, has_jbo = 0, has_size = 0; 231 for (;;) { 232 int this_flag = 0; 233 char fc = *fp++; 234 switch (fc) { 235 case '\0': // end of string 236 assert(flags == (jchar)flags, "change _format_flags"); 237 return flags; 238 239 case '_': continue; // ignore these 240 241 case 'j': this_flag = _fmt_has_j; has_jbo = 1; break; 242 case 'k': this_flag = _fmt_has_k; has_jbo = 1; break; 243 case 'i': this_flag = _fmt_has_i; has_jbo = 1; break; 244 case 'c': this_flag = _fmt_has_c; has_jbo = 1; break; 245 case 'o': this_flag = _fmt_has_o; has_jbo = 1; break; 246 247 // uppercase versions mark native byte order (from Rewriter) 248 // actually, only the 'J' case happens currently 249 case 'J': this_flag = _fmt_has_j; has_nbo = 1; break; 250 case 'K': this_flag = _fmt_has_k; has_nbo = 1; break; 251 case 'I': this_flag = _fmt_has_i; has_nbo = 1; break; 252 case 'C': this_flag = _fmt_has_c; has_nbo = 1; break; 253 case 'O': this_flag = _fmt_has_o; has_nbo = 1; break; 254 default: guarantee(false, "bad char in format"); 255 } 256 257 flags |= this_flag; 258 259 guarantee(!(has_jbo && has_nbo), "mixed byte orders in format"); 260 if (has_nbo) 261 flags |= _fmt_has_nbo; 262 263 int this_size = 1; 264 if (*fp == fc) { 265 // advance beyond run of the same characters 266 this_size = 2; 267 while (*++fp == fc) this_size++; 268 switch (this_size) { 269 case 2: flags |= _fmt_has_u2; break; 270 case 4: flags |= _fmt_has_u4; break; 271 default: guarantee(false, "bad rep count in format"); 272 } 273 } 274 guarantee(has_size == 0 || // no field yet 275 this_size == has_size || // same size 276 this_size < has_size && *fp == '\0', // last field can be short 277 "mixed field sizes in format"); 278 has_size = this_size; 279 } 280 } 281 282 void Bytecodes::initialize() { 283 if (_is_initialized) return; 284 assert(number_of_codes <= 256, "too many bytecodes"); 285 286 // initialize bytecode tables - didn't use static array initializers 287 // (such as {}) so we can do additional consistency checks and init- 288 // code is independent of actual bytecode numbering. 289 // 290 // Note 1: NULL for the format string means the bytecode doesn't exist 291 // in that form. 292 // 293 // Note 2: The result type is T_ILLEGAL for bytecodes where the top of stack 294 // type after execution is not only determined by the bytecode itself. 295 296 // Java bytecodes 297 // bytecode bytecode name format wide f. result tp stk traps 298 def(_nop , "nop" , "b" , NULL , T_VOID , 0, false); 299 def(_aconst_null , "aconst_null" , "b" , NULL , T_OBJECT , 1, false); 300 def(_iconst_m1 , "iconst_m1" , "b" , NULL , T_INT , 1, false); 301 def(_iconst_0 , "iconst_0" , "b" , NULL , T_INT , 1, false); 302 def(_iconst_1 , "iconst_1" , "b" , NULL , T_INT , 1, false); 303 def(_iconst_2 , "iconst_2" , "b" , NULL , T_INT , 1, false); 304 def(_iconst_3 , "iconst_3" , "b" , NULL , T_INT , 1, false); 305 def(_iconst_4 , "iconst_4" , "b" , NULL , T_INT , 1, false); 306 def(_iconst_5 , "iconst_5" , "b" , NULL , T_INT , 1, false); 307 def(_lconst_0 , "lconst_0" , "b" , NULL , T_LONG , 2, false); 308 def(_lconst_1 , "lconst_1" , "b" , NULL , T_LONG , 2, false); 309 def(_fconst_0 , "fconst_0" , "b" , NULL , T_FLOAT , 1, false); 310 def(_fconst_1 , "fconst_1" , "b" , NULL , T_FLOAT , 1, false); 311 def(_fconst_2 , "fconst_2" , "b" , NULL , T_FLOAT , 1, false); 312 def(_dconst_0 , "dconst_0" , "b" , NULL , T_DOUBLE , 2, false); 313 def(_dconst_1 , "dconst_1" , "b" , NULL , T_DOUBLE , 2, false); 314 def(_bipush , "bipush" , "bc" , NULL , T_INT , 1, false); 315 def(_sipush , "sipush" , "bcc" , NULL , T_INT , 1, false); 316 def(_ldc , "ldc" , "bk" , NULL , T_ILLEGAL, 1, true ); 317 def(_ldc_w , "ldc_w" , "bkk" , NULL , T_ILLEGAL, 1, true ); 318 def(_ldc2_w , "ldc2_w" , "bkk" , NULL , T_ILLEGAL, 2, true ); 319 def(_iload , "iload" , "bi" , "wbii" , T_INT , 1, false); 320 def(_lload , "lload" , "bi" , "wbii" , T_LONG , 2, false); 321 def(_fload , "fload" , "bi" , "wbii" , T_FLOAT , 1, false); 322 def(_dload , "dload" , "bi" , "wbii" , T_DOUBLE , 2, false); 323 def(_aload , "aload" , "bi" , "wbii" , T_OBJECT , 1, false); 324 def(_iload_0 , "iload_0" , "b" , NULL , T_INT , 1, false); 325 def(_iload_1 , "iload_1" , "b" , NULL , T_INT , 1, false); 326 def(_iload_2 , "iload_2" , "b" , NULL , T_INT , 1, false); 327 def(_iload_3 , "iload_3" , "b" , NULL , T_INT , 1, false); 328 def(_lload_0 , "lload_0" , "b" , NULL , T_LONG , 2, false); 329 def(_lload_1 , "lload_1" , "b" , NULL , T_LONG , 2, false); 330 def(_lload_2 , "lload_2" , "b" , NULL , T_LONG , 2, false); 331 def(_lload_3 , "lload_3" , "b" , NULL , T_LONG , 2, false); 332 def(_fload_0 , "fload_0" , "b" , NULL , T_FLOAT , 1, false); 333 def(_fload_1 , "fload_1" , "b" , NULL , T_FLOAT , 1, false); 334 def(_fload_2 , "fload_2" , "b" , NULL , T_FLOAT , 1, false); 335 def(_fload_3 , "fload_3" , "b" , NULL , T_FLOAT , 1, false); 336 def(_dload_0 , "dload_0" , "b" , NULL , T_DOUBLE , 2, false); 337 def(_dload_1 , "dload_1" , "b" , NULL , T_DOUBLE , 2, false); 338 def(_dload_2 , "dload_2" , "b" , NULL , T_DOUBLE , 2, false); 339 def(_dload_3 , "dload_3" , "b" , NULL , T_DOUBLE , 2, false); 340 def(_aload_0 , "aload_0" , "b" , NULL , T_OBJECT , 1, true ); // rewriting in interpreter 341 def(_aload_1 , "aload_1" , "b" , NULL , T_OBJECT , 1, false); 342 def(_aload_2 , "aload_2" , "b" , NULL , T_OBJECT , 1, false); 343 def(_aload_3 , "aload_3" , "b" , NULL , T_OBJECT , 1, false); 344 def(_iaload , "iaload" , "b" , NULL , T_INT , -1, true ); 345 def(_laload , "laload" , "b" , NULL , T_LONG , 0, true ); 346 def(_faload , "faload" , "b" , NULL , T_FLOAT , -1, true ); 347 def(_daload , "daload" , "b" , NULL , T_DOUBLE , 0, true ); 348 def(_aaload , "aaload" , "b" , NULL , T_OBJECT , -1, true ); 349 def(_baload , "baload" , "b" , NULL , T_INT , -1, true ); 350 def(_caload , "caload" , "b" , NULL , T_INT , -1, true ); 351 def(_saload , "saload" , "b" , NULL , T_INT , -1, true ); 352 def(_istore , "istore" , "bi" , "wbii" , T_VOID , -1, false); 353 def(_lstore , "lstore" , "bi" , "wbii" , T_VOID , -2, false); 354 def(_fstore , "fstore" , "bi" , "wbii" , T_VOID , -1, false); 355 def(_dstore , "dstore" , "bi" , "wbii" , T_VOID , -2, false); 356 def(_astore , "astore" , "bi" , "wbii" , T_VOID , -1, false); 357 def(_istore_0 , "istore_0" , "b" , NULL , T_VOID , -1, false); 358 def(_istore_1 , "istore_1" , "b" , NULL , T_VOID , -1, false); 359 def(_istore_2 , "istore_2" , "b" , NULL , T_VOID , -1, false); 360 def(_istore_3 , "istore_3" , "b" , NULL , T_VOID , -1, false); 361 def(_lstore_0 , "lstore_0" , "b" , NULL , T_VOID , -2, false); 362 def(_lstore_1 , "lstore_1" , "b" , NULL , T_VOID , -2, false); 363 def(_lstore_2 , "lstore_2" , "b" , NULL , T_VOID , -2, false); 364 def(_lstore_3 , "lstore_3" , "b" , NULL , T_VOID , -2, false); 365 def(_fstore_0 , "fstore_0" , "b" , NULL , T_VOID , -1, false); 366 def(_fstore_1 , "fstore_1" , "b" , NULL , T_VOID , -1, false); 367 def(_fstore_2 , "fstore_2" , "b" , NULL , T_VOID , -1, false); 368 def(_fstore_3 , "fstore_3" , "b" , NULL , T_VOID , -1, false); 369 def(_dstore_0 , "dstore_0" , "b" , NULL , T_VOID , -2, false); 370 def(_dstore_1 , "dstore_1" , "b" , NULL , T_VOID , -2, false); 371 def(_dstore_2 , "dstore_2" , "b" , NULL , T_VOID , -2, false); 372 def(_dstore_3 , "dstore_3" , "b" , NULL , T_VOID , -2, false); 373 def(_astore_0 , "astore_0" , "b" , NULL , T_VOID , -1, false); 374 def(_astore_1 , "astore_1" , "b" , NULL , T_VOID , -1, false); 375 def(_astore_2 , "astore_2" , "b" , NULL , T_VOID , -1, false); 376 def(_astore_3 , "astore_3" , "b" , NULL , T_VOID , -1, false); 377 def(_iastore , "iastore" , "b" , NULL , T_VOID , -3, true ); 378 def(_lastore , "lastore" , "b" , NULL , T_VOID , -4, true ); 379 def(_fastore , "fastore" , "b" , NULL , T_VOID , -3, true ); 380 def(_dastore , "dastore" , "b" , NULL , T_VOID , -4, true ); 381 def(_aastore , "aastore" , "b" , NULL , T_VOID , -3, true ); 382 def(_bastore , "bastore" , "b" , NULL , T_VOID , -3, true ); 383 def(_castore , "castore" , "b" , NULL , T_VOID , -3, true ); 384 def(_sastore , "sastore" , "b" , NULL , T_VOID , -3, true ); 385 def(_pop , "pop" , "b" , NULL , T_VOID , -1, false); 386 def(_pop2 , "pop2" , "b" , NULL , T_VOID , -2, false); 387 def(_dup , "dup" , "b" , NULL , T_VOID , 1, false); 388 def(_dup_x1 , "dup_x1" , "b" , NULL , T_VOID , 1, false); 389 def(_dup_x2 , "dup_x2" , "b" , NULL , T_VOID , 1, false); 390 def(_dup2 , "dup2" , "b" , NULL , T_VOID , 2, false); 391 def(_dup2_x1 , "dup2_x1" , "b" , NULL , T_VOID , 2, false); 392 def(_dup2_x2 , "dup2_x2" , "b" , NULL , T_VOID , 2, false); 393 def(_swap , "swap" , "b" , NULL , T_VOID , 0, false); 394 def(_iadd , "iadd" , "b" , NULL , T_INT , -1, false); 395 def(_ladd , "ladd" , "b" , NULL , T_LONG , -2, false); 396 def(_fadd , "fadd" , "b" , NULL , T_FLOAT , -1, false); 397 def(_dadd , "dadd" , "b" , NULL , T_DOUBLE , -2, false); 398 def(_isub , "isub" , "b" , NULL , T_INT , -1, false); 399 def(_lsub , "lsub" , "b" , NULL , T_LONG , -2, false); 400 def(_fsub , "fsub" , "b" , NULL , T_FLOAT , -1, false); 401 def(_dsub , "dsub" , "b" , NULL , T_DOUBLE , -2, false); 402 def(_imul , "imul" , "b" , NULL , T_INT , -1, false); 403 def(_lmul , "lmul" , "b" , NULL , T_LONG , -2, false); 404 def(_fmul , "fmul" , "b" , NULL , T_FLOAT , -1, false); 405 def(_dmul , "dmul" , "b" , NULL , T_DOUBLE , -2, false); 406 def(_idiv , "idiv" , "b" , NULL , T_INT , -1, true ); 407 def(_ldiv , "ldiv" , "b" , NULL , T_LONG , -2, true ); 408 def(_fdiv , "fdiv" , "b" , NULL , T_FLOAT , -1, false); 409 def(_ddiv , "ddiv" , "b" , NULL , T_DOUBLE , -2, false); 410 def(_irem , "irem" , "b" , NULL , T_INT , -1, true ); 411 def(_lrem , "lrem" , "b" , NULL , T_LONG , -2, true ); 412 def(_frem , "frem" , "b" , NULL , T_FLOAT , -1, false); 413 def(_drem , "drem" , "b" , NULL , T_DOUBLE , -2, false); 414 def(_ineg , "ineg" , "b" , NULL , T_INT , 0, false); 415 def(_lneg , "lneg" , "b" , NULL , T_LONG , 0, false); 416 def(_fneg , "fneg" , "b" , NULL , T_FLOAT , 0, false); 417 def(_dneg , "dneg" , "b" , NULL , T_DOUBLE , 0, false); 418 def(_ishl , "ishl" , "b" , NULL , T_INT , -1, false); 419 def(_lshl , "lshl" , "b" , NULL , T_LONG , -1, false); 420 def(_ishr , "ishr" , "b" , NULL , T_INT , -1, false); 421 def(_lshr , "lshr" , "b" , NULL , T_LONG , -1, false); 422 def(_iushr , "iushr" , "b" , NULL , T_INT , -1, false); 423 def(_lushr , "lushr" , "b" , NULL , T_LONG , -1, false); 424 def(_iand , "iand" , "b" , NULL , T_INT , -1, false); 425 def(_land , "land" , "b" , NULL , T_LONG , -2, false); 426 def(_ior , "ior" , "b" , NULL , T_INT , -1, false); 427 def(_lor , "lor" , "b" , NULL , T_LONG , -2, false); 428 def(_ixor , "ixor" , "b" , NULL , T_INT , -1, false); 429 def(_lxor , "lxor" , "b" , NULL , T_LONG , -2, false); 430 def(_iinc , "iinc" , "bic" , "wbiicc", T_VOID , 0, false); 431 def(_i2l , "i2l" , "b" , NULL , T_LONG , 1, false); 432 def(_i2f , "i2f" , "b" , NULL , T_FLOAT , 0, false); 433 def(_i2d , "i2d" , "b" , NULL , T_DOUBLE , 1, false); 434 def(_l2i , "l2i" , "b" , NULL , T_INT , -1, false); 435 def(_l2f , "l2f" , "b" , NULL , T_FLOAT , -1, false); 436 def(_l2d , "l2d" , "b" , NULL , T_DOUBLE , 0, false); 437 def(_f2i , "f2i" , "b" , NULL , T_INT , 0, false); 438 def(_f2l , "f2l" , "b" , NULL , T_LONG , 1, false); 439 def(_f2d , "f2d" , "b" , NULL , T_DOUBLE , 1, false); 440 def(_d2i , "d2i" , "b" , NULL , T_INT , -1, false); 441 def(_d2l , "d2l" , "b" , NULL , T_LONG , 0, false); 442 def(_d2f , "d2f" , "b" , NULL , T_FLOAT , -1, false); 443 def(_i2b , "i2b" , "b" , NULL , T_BYTE , 0, false); 444 def(_i2c , "i2c" , "b" , NULL , T_CHAR , 0, false); 445 def(_i2s , "i2s" , "b" , NULL , T_SHORT , 0, false); 446 def(_lcmp , "lcmp" , "b" , NULL , T_VOID , -3, false); 447 def(_fcmpl , "fcmpl" , "b" , NULL , T_VOID , -1, false); 448 def(_fcmpg , "fcmpg" , "b" , NULL , T_VOID , -1, false); 449 def(_dcmpl , "dcmpl" , "b" , NULL , T_VOID , -3, false); 450 def(_dcmpg , "dcmpg" , "b" , NULL , T_VOID , -3, false); 451 def(_ifeq , "ifeq" , "boo" , NULL , T_VOID , -1, false); 452 def(_ifne , "ifne" , "boo" , NULL , T_VOID , -1, false); 453 def(_iflt , "iflt" , "boo" , NULL , T_VOID , -1, false); 454 def(_ifge , "ifge" , "boo" , NULL , T_VOID , -1, false); 455 def(_ifgt , "ifgt" , "boo" , NULL , T_VOID , -1, false); 456 def(_ifle , "ifle" , "boo" , NULL , T_VOID , -1, false); 457 def(_if_icmpeq , "if_icmpeq" , "boo" , NULL , T_VOID , -2, false); 458 def(_if_icmpne , "if_icmpne" , "boo" , NULL , T_VOID , -2, false); 459 def(_if_icmplt , "if_icmplt" , "boo" , NULL , T_VOID , -2, false); 460 def(_if_icmpge , "if_icmpge" , "boo" , NULL , T_VOID , -2, false); 461 def(_if_icmpgt , "if_icmpgt" , "boo" , NULL , T_VOID , -2, false); 462 def(_if_icmple , "if_icmple" , "boo" , NULL , T_VOID , -2, false); 463 def(_if_acmpeq , "if_acmpeq" , "boo" , NULL , T_VOID , -2, false); 464 def(_if_acmpne , "if_acmpne" , "boo" , NULL , T_VOID , -2, false); 465 def(_goto , "goto" , "boo" , NULL , T_VOID , 0, false); 466 def(_jsr , "jsr" , "boo" , NULL , T_INT , 0, false); 467 def(_ret , "ret" , "bi" , "wbii" , T_VOID , 0, false); 468 def(_tableswitch , "tableswitch" , "" , NULL , T_VOID , -1, false); // may have backward branches 469 def(_lookupswitch , "lookupswitch" , "" , NULL , T_VOID , -1, false); // rewriting in interpreter 470 def(_ireturn , "ireturn" , "b" , NULL , T_INT , -1, true); 471 def(_lreturn , "lreturn" , "b" , NULL , T_LONG , -2, true); 472 def(_freturn , "freturn" , "b" , NULL , T_FLOAT , -1, true); 473 def(_dreturn , "dreturn" , "b" , NULL , T_DOUBLE , -2, true); 474 def(_areturn , "areturn" , "b" , NULL , T_OBJECT , -1, true); 475 def(_return , "return" , "b" , NULL , T_VOID , 0, true); 476 def(_getstatic , "getstatic" , "bJJ" , NULL , T_ILLEGAL, 1, true ); 477 def(_putstatic , "putstatic" , "bJJ" , NULL , T_ILLEGAL, -1, true ); 478 def(_getfield , "getfield" , "bJJ" , NULL , T_ILLEGAL, 0, true ); 479 def(_putfield , "putfield" , "bJJ" , NULL , T_ILLEGAL, -2, true ); 480 def(_invokevirtual , "invokevirtual" , "bJJ" , NULL , T_ILLEGAL, -1, true); 481 def(_invokespecial , "invokespecial" , "bJJ" , NULL , T_ILLEGAL, -1, true); 482 def(_invokestatic , "invokestatic" , "bJJ" , NULL , T_ILLEGAL, 0, true); 483 def(_invokeinterface , "invokeinterface" , "bJJ__", NULL , T_ILLEGAL, -1, true); 484 def(_invokedynamic , "invokedynamic" , "bJJJJ", NULL , T_ILLEGAL, 0, true ); 485 def(_new , "new" , "bkk" , NULL , T_OBJECT , 1, true ); 486 def(_newarray , "newarray" , "bc" , NULL , T_OBJECT , 0, true ); 487 def(_anewarray , "anewarray" , "bkk" , NULL , T_OBJECT , 0, true ); 488 def(_arraylength , "arraylength" , "b" , NULL , T_VOID , 0, true ); 489 def(_athrow , "athrow" , "b" , NULL , T_VOID , -1, true ); 490 def(_checkcast , "checkcast" , "bkk" , NULL , T_OBJECT , 0, true ); 491 def(_instanceof , "instanceof" , "bkk" , NULL , T_INT , 0, true ); 492 def(_monitorenter , "monitorenter" , "b" , NULL , T_VOID , -1, true ); 493 def(_monitorexit , "monitorexit" , "b" , NULL , T_VOID , -1, true ); 494 def(_wide , "wide" , "" , NULL , T_VOID , 0, false); 495 def(_multianewarray , "multianewarray" , "bkkc" , NULL , T_OBJECT , 1, true ); 496 def(_ifnull , "ifnull" , "boo" , NULL , T_VOID , -1, false); 497 def(_ifnonnull , "ifnonnull" , "boo" , NULL , T_VOID , -1, false); 498 def(_goto_w , "goto_w" , "boooo", NULL , T_VOID , 0, false); 499 def(_jsr_w , "jsr_w" , "boooo", NULL , T_INT , 0, false); 500 def(_breakpoint , "breakpoint" , "" , NULL , T_VOID , 0, true); 501 502 // JVM bytecodes 503 // bytecode bytecode name format wide f. result tp stk traps std code 504 505 def(_fast_agetfield , "fast_agetfield" , "bJJ" , NULL , T_OBJECT , 0, true , _getfield ); 506 def(_fast_bgetfield , "fast_bgetfield" , "bJJ" , NULL , T_INT , 0, true , _getfield ); 507 def(_fast_cgetfield , "fast_cgetfield" , "bJJ" , NULL , T_CHAR , 0, true , _getfield ); 508 def(_fast_dgetfield , "fast_dgetfield" , "bJJ" , NULL , T_DOUBLE , 0, true , _getfield ); 509 def(_fast_fgetfield , "fast_fgetfield" , "bJJ" , NULL , T_FLOAT , 0, true , _getfield ); 510 def(_fast_igetfield , "fast_igetfield" , "bJJ" , NULL , T_INT , 0, true , _getfield ); 511 def(_fast_lgetfield , "fast_lgetfield" , "bJJ" , NULL , T_LONG , 0, true , _getfield ); 512 def(_fast_sgetfield , "fast_sgetfield" , "bJJ" , NULL , T_SHORT , 0, true , _getfield ); 513 514 def(_fast_aputfield , "fast_aputfield" , "bJJ" , NULL , T_OBJECT , 0, true , _putfield ); 515 def(_fast_bputfield , "fast_bputfield" , "bJJ" , NULL , T_INT , 0, true , _putfield ); 516 def(_fast_zputfield , "fast_zputfield" , "bJJ" , NULL , T_INT , 0, true , _putfield ); 517 def(_fast_cputfield , "fast_cputfield" , "bJJ" , NULL , T_CHAR , 0, true , _putfield ); 518 def(_fast_dputfield , "fast_dputfield" , "bJJ" , NULL , T_DOUBLE , 0, true , _putfield ); 519 def(_fast_fputfield , "fast_fputfield" , "bJJ" , NULL , T_FLOAT , 0, true , _putfield ); 520 def(_fast_iputfield , "fast_iputfield" , "bJJ" , NULL , T_INT , 0, true , _putfield ); 521 def(_fast_lputfield , "fast_lputfield" , "bJJ" , NULL , T_LONG , 0, true , _putfield ); 522 def(_fast_sputfield , "fast_sputfield" , "bJJ" , NULL , T_SHORT , 0, true , _putfield ); 523 524 def(_fast_aload_0 , "fast_aload_0" , "b" , NULL , T_OBJECT , 1, true , _aload_0 ); 525 def(_fast_iaccess_0 , "fast_iaccess_0" , "b_JJ" , NULL , T_INT , 1, true , _aload_0 ); 526 def(_fast_aaccess_0 , "fast_aaccess_0" , "b_JJ" , NULL , T_OBJECT , 1, true , _aload_0 ); 527 def(_fast_faccess_0 , "fast_faccess_0" , "b_JJ" , NULL , T_OBJECT , 1, true , _aload_0 ); 528 529 def(_fast_iload , "fast_iload" , "bi" , NULL , T_INT , 1, false, _iload); 530 def(_fast_iload2 , "fast_iload2" , "bi_i" , NULL , T_INT , 2, false, _iload); 531 def(_fast_icaload , "fast_icaload" , "bi_" , NULL , T_INT , 0, false, _iload); 532 533 // Faster method invocation. 534 def(_fast_invokevfinal , "fast_invokevfinal" , "bJJ" , NULL , T_ILLEGAL, -1, true, _invokevirtual ); 535 536 def(_fast_linearswitch , "fast_linearswitch" , "" , NULL , T_VOID , -1, false, _lookupswitch ); 537 def(_fast_binaryswitch , "fast_binaryswitch" , "" , NULL , T_VOID , -1, false, _lookupswitch ); 538 539 def(_return_register_finalizer , "return_register_finalizer" , "b" , NULL , T_VOID , 0, true, _return); 540 541 def(_invokehandle , "invokehandle" , "bJJ" , NULL , T_ILLEGAL, -1, true, _invokevirtual ); 542 543 def(_fast_aldc , "fast_aldc" , "bj" , NULL , T_OBJECT, 1, true, _ldc ); 544 def(_fast_aldc_w , "fast_aldc_w" , "bJJ" , NULL , T_OBJECT, 1, true, _ldc_w ); 545 546 def(_shouldnotreachhere , "_shouldnotreachhere" , "b" , NULL , T_VOID , 0, false); 547 548 // platform specific JVM bytecodes 549 pd_initialize(); 550 551 // compare can_trap information for each bytecode with the 552 // can_trap information for the corresponding base bytecode 553 // (if a rewritten bytecode can trap, so must the base bytecode) 554 #ifdef ASSERT 555 { for (int i = 0; i < number_of_codes; i++) { 556 if (is_defined(i)) { 557 Code code = cast(i); 558 Code java = java_code(code); 559 if (can_trap(code) && !can_trap(java)) 560 fatal(err_msg("%s can trap => %s can trap, too", name(code), 561 name(java))); 562 } 563 } 564 } 565 #endif 566 567 // initialization successful 568 _is_initialized = true; 569 } 570 571 572 void bytecodes_init() { 573 Bytecodes::initialize(); 574 } 575 576 // Restore optimization 577 #ifdef _M_AMD64 578 #pragma optimize ("", on) 579 #endif