1 #ifdef USE_PRAGMA_IDENT_SRC
2 #pragma ident "@(#)bytecodes.cpp 1.97 07/06/20 14:52:27 JVM"
3 #endif
4 /*
5 * Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved.
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
7 *
8 * This code is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License version 2 only, as
10 * published by the Free Software Foundation.
11 *
12 * This code is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 * version 2 for more details (a copy is included in the LICENSE file that
16 * accompanied this code).
17 *
18 * You should have received a copy of the GNU General Public License version
19 * 2 along with this work; if not, write to the Free Software Foundation,
20 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
21 *
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
24 * have any questions.
25 *
26 */
27
28 #include "incls/_precompiled.incl"
29 #include "incls/_bytecodes.cpp.incl"
30
31
32 // Windows AMD64 Compiler Hangs compiling this file
33 // unless optimization is off
34 #ifdef _M_AMD64
35 #pragma optimize ("", off)
36 #endif
37
38
39 bool Bytecodes::_is_initialized = false;
40 const char* Bytecodes::_name [Bytecodes::number_of_codes];
41 const char* Bytecodes::_format [Bytecodes::number_of_codes];
42 const char* Bytecodes::_wide_format [Bytecodes::number_of_codes];
43 BasicType Bytecodes::_result_type [Bytecodes::number_of_codes];
44 s_char Bytecodes::_depth [Bytecodes::number_of_codes];
45 u_char Bytecodes::_length [Bytecodes::number_of_codes];
46 bool Bytecodes::_can_trap [Bytecodes::number_of_codes];
47 Bytecodes::Code Bytecodes::_java_code [Bytecodes::number_of_codes];
48 bool Bytecodes::_can_rewrite [Bytecodes::number_of_codes];
49
50
51 Bytecodes::Code Bytecodes::code_at(methodOop method, int bci) {
52 return code_at(method->bcp_from(bci), method);
53 }
54
55 Bytecodes::Code Bytecodes::non_breakpoint_code_at(address bcp, methodOop method) {
56 if (method == NULL) method = methodOopDesc::method_from_bcp(bcp);
57 return method->orig_bytecode_at(method->bci_from(bcp));
58 }
59
60 int Bytecodes::special_length_at(address bcp, address end) {
61 Code code = code_at(bcp);
62 switch (code) {
63 case _wide:
64 if (end != NULL && bcp + 1 >= end) {
65 return -1; // don't read past end of code buffer
66 }
67 return wide_length_for(cast(*(bcp + 1)));
68 case _tableswitch:
69 { address aligned_bcp = (address)round_to((intptr_t)bcp + 1, jintSize);
70 if (end != NULL && aligned_bcp + 3*jintSize >= end) {
71 return -1; // don't read past end of code buffer
72 }
73 jlong lo = (jint)Bytes::get_Java_u4(aligned_bcp + 1*jintSize);
74 jlong hi = (jint)Bytes::get_Java_u4(aligned_bcp + 2*jintSize);
75 jlong len = (aligned_bcp - bcp) + (3 + hi - lo + 1)*jintSize;
76 // only return len if it can be represented as a positive int;
77 // return -1 otherwise
78 return (len > 0 && len == (int)len) ? len : -1;
79 }
80
81 case _lookupswitch: // fall through
82 case _fast_binaryswitch: // fall through
83 case _fast_linearswitch:
84 { address aligned_bcp = (address)round_to((intptr_t)bcp + 1, jintSize);
85 if (end != NULL && aligned_bcp + 2*jintSize >= end) {
86 return -1; // don't read past end of code buffer
87 }
88 jlong npairs = (jint)Bytes::get_Java_u4(aligned_bcp + jintSize);
89 jlong len = (aligned_bcp - bcp) + (2 + 2*npairs)*jintSize;
90 // only return len if it can be represented as a positive int;
91 // return -1 otherwise
92 return (len > 0 && len == (int)len) ? len : -1;
93 }
94 }
95 return 0;
96 }
97
98 // At a breakpoint instruction, this returns the breakpoint's length,
99 // otherwise, it's the same as special_length_at(). This is used by
100 // the RawByteCodeStream, which wants to see the actual bytecode
101 // values (including breakpoint). RawByteCodeStream is used by the
102 // verifier when reading in bytecode to verify. Other mechanisms that
103 // run at runtime (such as generateOopMaps) need to iterate over the code
104 // and don't expect to see breakpoints: they want to see the instruction
105 // which was replaced so that they can get the correct length and find
106 // the next bytecode.
107 //
108 // 'end' indicates the end of the code buffer, which we should not try to read
109 // past.
110 int Bytecodes::raw_special_length_at(address bcp, address end) {
111 Code code = code_or_bp_at(bcp);
112 if (code == _breakpoint) {
113 return 1;
114 } else {
115 return special_length_at(bcp, end);
116 }
117 }
118
119
120
121 void Bytecodes::def(Code code, const char* name, const char* format, const char* wide_format, BasicType result_type, int depth, bool can_trap) {
122 def(code, name, format, wide_format, result_type, depth, can_trap, code);
123 }
124
125
126 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) {
127 assert(wide_format == NULL || format != NULL, "short form must exist if there's a wide form");
128 _name [code] = name;
129 _format [code] = format;
130 _wide_format [code] = wide_format;
131 _result_type [code] = result_type;
132 _depth [code] = depth;
133 _can_trap [code] = can_trap;
134 _length [code] = format != NULL ? (u_char)strlen(format) : 0;
135 _java_code [code] = java_code;
136 if (java_code != code) _can_rewrite[java_code] = true;
137 }
138
139
140 // Format strings interpretation:
141 //
142 // b: bytecode
143 // c: signed constant, Java byte-ordering
144 // i: unsigned index , Java byte-ordering
145 // j: unsigned index , native byte-ordering
146 // o: branch offset , Java byte-ordering
147 // _: unused/ignored
148 // w: wide bytecode
149 //
150 // Note: Right now the format strings are used for 2 purposes:
151 // 1. to specify the length of the bytecode
152 // (= number of characters in format string)
153 // 2. to specify the bytecode attributes
154 //
155 // The bytecode attributes are currently used only for bytecode tracing
156 // (see BytecodeTracer); thus if more specific format information is
157 // used, one would also have to adjust the bytecode tracer.
158 //
159 // Note: For bytecodes with variable length, the format string is the empty string.
160
161 void Bytecodes::initialize() {
162 if (_is_initialized) return;
163 assert(number_of_codes <= 256, "too many bytecodes");
164
165 // initialize bytecode tables - didn't use static array initializers
166 // (such as {}) so we can do additional consistency checks and init-
167 // code is independent of actual bytecode numbering.
168 //
169 // Note 1: NULL for the format string means the bytecode doesn't exist
170 // in that form.
171 //
172 // Note 2: The result type is T_ILLEGAL for bytecodes where the top of stack
173 // type after execution is not only determined by the bytecode itself.
174
175 // Java bytecodes
176 // bytecode bytecode name format wide f. result tp stk traps
177 def(_nop , "nop" , "b" , NULL , T_VOID , 0, false);
178 def(_aconst_null , "aconst_null" , "b" , NULL , T_OBJECT , 1, false);
179 def(_iconst_m1 , "iconst_m1" , "b" , NULL , T_INT , 1, false);
180 def(_iconst_0 , "iconst_0" , "b" , NULL , T_INT , 1, false);
181 def(_iconst_1 , "iconst_1" , "b" , NULL , T_INT , 1, false);
182 def(_iconst_2 , "iconst_2" , "b" , NULL , T_INT , 1, false);
183 def(_iconst_3 , "iconst_3" , "b" , NULL , T_INT , 1, false);
184 def(_iconst_4 , "iconst_4" , "b" , NULL , T_INT , 1, false);
185 def(_iconst_5 , "iconst_5" , "b" , NULL , T_INT , 1, false);
186 def(_lconst_0 , "lconst_0" , "b" , NULL , T_LONG , 2, false);
187 def(_lconst_1 , "lconst_1" , "b" , NULL , T_LONG , 2, false);
188 def(_fconst_0 , "fconst_0" , "b" , NULL , T_FLOAT , 1, false);
189 def(_fconst_1 , "fconst_1" , "b" , NULL , T_FLOAT , 1, false);
190 def(_fconst_2 , "fconst_2" , "b" , NULL , T_FLOAT , 1, false);
191 def(_dconst_0 , "dconst_0" , "b" , NULL , T_DOUBLE , 2, false);
192 def(_dconst_1 , "dconst_1" , "b" , NULL , T_DOUBLE , 2, false);
193 def(_bipush , "bipush" , "bc" , NULL , T_INT , 1, false);
194 def(_sipush , "sipush" , "bcc" , NULL , T_INT , 1, false);
195 def(_ldc , "ldc" , "bi" , NULL , T_ILLEGAL, 1, true );
196 def(_ldc_w , "ldc_w" , "bii" , NULL , T_ILLEGAL, 1, true );
197 def(_ldc2_w , "ldc2_w" , "bii" , NULL , T_ILLEGAL, 2, true );
198 def(_iload , "iload" , "bi" , "wbii" , T_INT , 1, false);
199 def(_lload , "lload" , "bi" , "wbii" , T_LONG , 2, false);
200 def(_fload , "fload" , "bi" , "wbii" , T_FLOAT , 1, false);
201 def(_dload , "dload" , "bi" , "wbii" , T_DOUBLE , 2, false);
202 def(_aload , "aload" , "bi" , "wbii" , T_OBJECT , 1, false);
203 def(_iload_0 , "iload_0" , "b" , NULL , T_INT , 1, false);
204 def(_iload_1 , "iload_1" , "b" , NULL , T_INT , 1, false);
205 def(_iload_2 , "iload_2" , "b" , NULL , T_INT , 1, false);
206 def(_iload_3 , "iload_3" , "b" , NULL , T_INT , 1, false);
207 def(_lload_0 , "lload_0" , "b" , NULL , T_LONG , 2, false);
208 def(_lload_1 , "lload_1" , "b" , NULL , T_LONG , 2, false);
209 def(_lload_2 , "lload_2" , "b" , NULL , T_LONG , 2, false);
210 def(_lload_3 , "lload_3" , "b" , NULL , T_LONG , 2, false);
211 def(_fload_0 , "fload_0" , "b" , NULL , T_FLOAT , 1, false);
212 def(_fload_1 , "fload_1" , "b" , NULL , T_FLOAT , 1, false);
213 def(_fload_2 , "fload_2" , "b" , NULL , T_FLOAT , 1, false);
214 def(_fload_3 , "fload_3" , "b" , NULL , T_FLOAT , 1, false);
215 def(_dload_0 , "dload_0" , "b" , NULL , T_DOUBLE , 2, false);
216 def(_dload_1 , "dload_1" , "b" , NULL , T_DOUBLE , 2, false);
217 def(_dload_2 , "dload_2" , "b" , NULL , T_DOUBLE , 2, false);
218 def(_dload_3 , "dload_3" , "b" , NULL , T_DOUBLE , 2, false);
219 def(_aload_0 , "aload_0" , "b" , NULL , T_OBJECT , 1, true ); // rewriting in interpreter
220 def(_aload_1 , "aload_1" , "b" , NULL , T_OBJECT , 1, false);
221 def(_aload_2 , "aload_2" , "b" , NULL , T_OBJECT , 1, false);
222 def(_aload_3 , "aload_3" , "b" , NULL , T_OBJECT , 1, false);
223 def(_iaload , "iaload" , "b" , NULL , T_INT , -1, true );
224 def(_laload , "laload" , "b" , NULL , T_LONG , 0, true );
225 def(_faload , "faload" , "b" , NULL , T_FLOAT , -1, true );
226 def(_daload , "daload" , "b" , NULL , T_DOUBLE , 0, true );
227 def(_aaload , "aaload" , "b" , NULL , T_OBJECT , -1, true );
228 def(_baload , "baload" , "b" , NULL , T_INT , -1, true );
229 def(_caload , "caload" , "b" , NULL , T_INT , -1, true );
230 def(_saload , "saload" , "b" , NULL , T_INT , -1, true );
231 def(_istore , "istore" , "bi" , "wbii" , T_VOID , -1, false);
232 def(_lstore , "lstore" , "bi" , "wbii" , T_VOID , -2, false);
233 def(_fstore , "fstore" , "bi" , "wbii" , T_VOID , -1, false);
234 def(_dstore , "dstore" , "bi" , "wbii" , T_VOID , -2, false);
235 def(_astore , "astore" , "bi" , "wbii" , T_VOID , -1, false);
236 def(_istore_0 , "istore_0" , "b" , NULL , T_VOID , -1, false);
237 def(_istore_1 , "istore_1" , "b" , NULL , T_VOID , -1, false);
238 def(_istore_2 , "istore_2" , "b" , NULL , T_VOID , -1, false);
239 def(_istore_3 , "istore_3" , "b" , NULL , T_VOID , -1, false);
240 def(_lstore_0 , "lstore_0" , "b" , NULL , T_VOID , -2, false);
241 def(_lstore_1 , "lstore_1" , "b" , NULL , T_VOID , -2, false);
242 def(_lstore_2 , "lstore_2" , "b" , NULL , T_VOID , -2, false);
243 def(_lstore_3 , "lstore_3" , "b" , NULL , T_VOID , -2, false);
244 def(_fstore_0 , "fstore_0" , "b" , NULL , T_VOID , -1, false);
245 def(_fstore_1 , "fstore_1" , "b" , NULL , T_VOID , -1, false);
246 def(_fstore_2 , "fstore_2" , "b" , NULL , T_VOID , -1, false);
247 def(_fstore_3 , "fstore_3" , "b" , NULL , T_VOID , -1, false);
248 def(_dstore_0 , "dstore_0" , "b" , NULL , T_VOID , -2, false);
249 def(_dstore_1 , "dstore_1" , "b" , NULL , T_VOID , -2, false);
250 def(_dstore_2 , "dstore_2" , "b" , NULL , T_VOID , -2, false);
251 def(_dstore_3 , "dstore_3" , "b" , NULL , T_VOID , -2, false);
252 def(_astore_0 , "astore_0" , "b" , NULL , T_VOID , -1, false);
253 def(_astore_1 , "astore_1" , "b" , NULL , T_VOID , -1, false);
254 def(_astore_2 , "astore_2" , "b" , NULL , T_VOID , -1, false);
255 def(_astore_3 , "astore_3" , "b" , NULL , T_VOID , -1, false);
256 def(_iastore , "iastore" , "b" , NULL , T_VOID , -3, true );
257 def(_lastore , "lastore" , "b" , NULL , T_VOID , -4, true );
258 def(_fastore , "fastore" , "b" , NULL , T_VOID , -3, true );
259 def(_dastore , "dastore" , "b" , NULL , T_VOID , -4, true );
260 def(_aastore , "aastore" , "b" , NULL , T_VOID , -3, true );
261 def(_bastore , "bastore" , "b" , NULL , T_VOID , -3, true );
262 def(_castore , "castore" , "b" , NULL , T_VOID , -3, true );
263 def(_sastore , "sastore" , "b" , NULL , T_VOID , -3, true );
264 def(_pop , "pop" , "b" , NULL , T_VOID , -1, false);
265 def(_pop2 , "pop2" , "b" , NULL , T_VOID , -2, false);
266 def(_dup , "dup" , "b" , NULL , T_VOID , 1, false);
267 def(_dup_x1 , "dup_x1" , "b" , NULL , T_VOID , 1, false);
268 def(_dup_x2 , "dup_x2" , "b" , NULL , T_VOID , 1, false);
269 def(_dup2 , "dup2" , "b" , NULL , T_VOID , 2, false);
270 def(_dup2_x1 , "dup2_x1" , "b" , NULL , T_VOID , 2, false);
271 def(_dup2_x2 , "dup2_x2" , "b" , NULL , T_VOID , 2, false);
272 def(_swap , "swap" , "b" , NULL , T_VOID , 0, false);
273 def(_iadd , "iadd" , "b" , NULL , T_INT , -1, false);
274 def(_ladd , "ladd" , "b" , NULL , T_LONG , -2, false);
275 def(_fadd , "fadd" , "b" , NULL , T_FLOAT , -1, false);
276 def(_dadd , "dadd" , "b" , NULL , T_DOUBLE , -2, false);
277 def(_isub , "isub" , "b" , NULL , T_INT , -1, false);
278 def(_lsub , "lsub" , "b" , NULL , T_LONG , -2, false);
279 def(_fsub , "fsub" , "b" , NULL , T_FLOAT , -1, false);
280 def(_dsub , "dsub" , "b" , NULL , T_DOUBLE , -2, false);
281 def(_imul , "imul" , "b" , NULL , T_INT , -1, false);
282 def(_lmul , "lmul" , "b" , NULL , T_LONG , -2, false);
283 def(_fmul , "fmul" , "b" , NULL , T_FLOAT , -1, false);
284 def(_dmul , "dmul" , "b" , NULL , T_DOUBLE , -2, false);
285 def(_idiv , "idiv" , "b" , NULL , T_INT , -1, true );
286 def(_ldiv , "ldiv" , "b" , NULL , T_LONG , -2, true );
287 def(_fdiv , "fdiv" , "b" , NULL , T_FLOAT , -1, false);
288 def(_ddiv , "ddiv" , "b" , NULL , T_DOUBLE , -2, false);
289 def(_irem , "irem" , "b" , NULL , T_INT , -1, true );
290 def(_lrem , "lrem" , "b" , NULL , T_LONG , -2, true );
291 def(_frem , "frem" , "b" , NULL , T_FLOAT , -1, false);
292 def(_drem , "drem" , "b" , NULL , T_DOUBLE , -2, false);
293 def(_ineg , "ineg" , "b" , NULL , T_INT , 0, false);
294 def(_lneg , "lneg" , "b" , NULL , T_LONG , 0, false);
295 def(_fneg , "fneg" , "b" , NULL , T_FLOAT , 0, false);
296 def(_dneg , "dneg" , "b" , NULL , T_DOUBLE , 0, false);
297 def(_ishl , "ishl" , "b" , NULL , T_INT , -1, false);
298 def(_lshl , "lshl" , "b" , NULL , T_LONG , -1, false);
299 def(_ishr , "ishr" , "b" , NULL , T_INT , -1, false);
300 def(_lshr , "lshr" , "b" , NULL , T_LONG , -1, false);
301 def(_iushr , "iushr" , "b" , NULL , T_INT , -1, false);
302 def(_lushr , "lushr" , "b" , NULL , T_LONG , -1, false);
303 def(_iand , "iand" , "b" , NULL , T_INT , -1, false);
304 def(_land , "land" , "b" , NULL , T_LONG , -2, false);
305 def(_ior , "ior" , "b" , NULL , T_INT , -1, false);
306 def(_lor , "lor" , "b" , NULL , T_LONG , -2, false);
307 def(_ixor , "ixor" , "b" , NULL , T_INT , -1, false);
308 def(_lxor , "lxor" , "b" , NULL , T_LONG , -2, false);
309 def(_iinc , "iinc" , "bic" , "wbiicc", T_VOID , 0, false);
310 def(_i2l , "i2l" , "b" , NULL , T_LONG , 1, false);
311 def(_i2f , "i2f" , "b" , NULL , T_FLOAT , 0, false);
312 def(_i2d , "i2d" , "b" , NULL , T_DOUBLE , 1, false);
313 def(_l2i , "l2i" , "b" , NULL , T_INT , -1, false);
314 def(_l2f , "l2f" , "b" , NULL , T_FLOAT , -1, false);
315 def(_l2d , "l2d" , "b" , NULL , T_DOUBLE , 0, false);
316 def(_f2i , "f2i" , "b" , NULL , T_INT , 0, false);
317 def(_f2l , "f2l" , "b" , NULL , T_LONG , 1, false);
318 def(_f2d , "f2d" , "b" , NULL , T_DOUBLE , 1, false);
319 def(_d2i , "d2i" , "b" , NULL , T_INT , -1, false);
320 def(_d2l , "d2l" , "b" , NULL , T_LONG , 0, false);
321 def(_d2f , "d2f" , "b" , NULL , T_FLOAT , -1, false);
322 def(_i2b , "i2b" , "b" , NULL , T_BYTE , 0, false);
323 def(_i2c , "i2c" , "b" , NULL , T_CHAR , 0, false);
324 def(_i2s , "i2s" , "b" , NULL , T_SHORT , 0, false);
325 def(_lcmp , "lcmp" , "b" , NULL , T_VOID , -3, false);
326 def(_fcmpl , "fcmpl" , "b" , NULL , T_VOID , -1, false);
327 def(_fcmpg , "fcmpg" , "b" , NULL , T_VOID , -1, false);
328 def(_dcmpl , "dcmpl" , "b" , NULL , T_VOID , -3, false);
329 def(_dcmpg , "dcmpg" , "b" , NULL , T_VOID , -3, false);
330 def(_ifeq , "ifeq" , "boo" , NULL , T_VOID , -1, false);
331 def(_ifne , "ifne" , "boo" , NULL , T_VOID , -1, false);
332 def(_iflt , "iflt" , "boo" , NULL , T_VOID , -1, false);
333 def(_ifge , "ifge" , "boo" , NULL , T_VOID , -1, false);
334 def(_ifgt , "ifgt" , "boo" , NULL , T_VOID , -1, false);
335 def(_ifle , "ifle" , "boo" , NULL , T_VOID , -1, false);
336 def(_if_icmpeq , "if_icmpeq" , "boo" , NULL , T_VOID , -2, false);
337 def(_if_icmpne , "if_icmpne" , "boo" , NULL , T_VOID , -2, false);
338 def(_if_icmplt , "if_icmplt" , "boo" , NULL , T_VOID , -2, false);
339 def(_if_icmpge , "if_icmpge" , "boo" , NULL , T_VOID , -2, false);
340 def(_if_icmpgt , "if_icmpgt" , "boo" , NULL , T_VOID , -2, false);
341 def(_if_icmple , "if_icmple" , "boo" , NULL , T_VOID , -2, false);
342 def(_if_acmpeq , "if_acmpeq" , "boo" , NULL , T_VOID , -2, false);
343 def(_if_acmpne , "if_acmpne" , "boo" , NULL , T_VOID , -2, false);
344 def(_goto , "goto" , "boo" , NULL , T_VOID , 0, false);
345 def(_jsr , "jsr" , "boo" , NULL , T_INT , 0, false);
346 def(_ret , "ret" , "bi" , "wbii" , T_VOID , 0, false);
347 def(_tableswitch , "tableswitch" , "" , NULL , T_VOID , -1, false); // may have backward branches
348 def(_lookupswitch , "lookupswitch" , "" , NULL , T_VOID , -1, false); // rewriting in interpreter
349 def(_ireturn , "ireturn" , "b" , NULL , T_INT , -1, true);
350 def(_lreturn , "lreturn" , "b" , NULL , T_LONG , -2, true);
351 def(_freturn , "freturn" , "b" , NULL , T_FLOAT , -1, true);
352 def(_dreturn , "dreturn" , "b" , NULL , T_DOUBLE , -2, true);
353 def(_areturn , "areturn" , "b" , NULL , T_OBJECT , -1, true);
354 def(_return , "return" , "b" , NULL , T_VOID , 0, true);
355 def(_getstatic , "getstatic" , "bjj" , NULL , T_ILLEGAL, 1, true );
356 def(_putstatic , "putstatic" , "bjj" , NULL , T_ILLEGAL, -1, true );
357 def(_getfield , "getfield" , "bjj" , NULL , T_ILLEGAL, 0, true );
358 def(_putfield , "putfield" , "bjj" , NULL , T_ILLEGAL, -2, true );
359 def(_invokevirtual , "invokevirtual" , "bjj" , NULL , T_ILLEGAL, -1, true);
360 def(_invokespecial , "invokespecial" , "bjj" , NULL , T_ILLEGAL, -1, true);
361 def(_invokestatic , "invokestatic" , "bjj" , NULL , T_ILLEGAL, 0, true);
362 def(_invokeinterface , "invokeinterface" , "bjj__", NULL , T_ILLEGAL, -1, true);
363 def(_xxxunusedxxx , "xxxunusedxxx" , NULL , NULL , T_VOID , 0, false);
364 def(_new , "new" , "bii" , NULL , T_OBJECT , 1, true );
365 def(_newarray , "newarray" , "bc" , NULL , T_OBJECT , 0, true );
366 def(_anewarray , "anewarray" , "bii" , NULL , T_OBJECT , 0, true );
367 def(_arraylength , "arraylength" , "b" , NULL , T_VOID , 0, true );
368 def(_athrow , "athrow" , "b" , NULL , T_VOID , -1, true );
369 def(_checkcast , "checkcast" , "bii" , NULL , T_OBJECT , 0, true );
370 def(_instanceof , "instanceof" , "bii" , NULL , T_INT , 0, true );
371 def(_monitorenter , "monitorenter" , "b" , NULL , T_VOID , -1, true );
372 def(_monitorexit , "monitorexit" , "b" , NULL , T_VOID , -1, true );
373 def(_wide , "wide" , "" , NULL , T_VOID , 0, false);
374 def(_multianewarray , "multianewarray" , "biic" , NULL , T_OBJECT , 1, true );
375 def(_ifnull , "ifnull" , "boo" , NULL , T_VOID , -1, false);
376 def(_ifnonnull , "ifnonnull" , "boo" , NULL , T_VOID , -1, false);
377 def(_goto_w , "goto_w" , "boooo", NULL , T_VOID , 0, false);
378 def(_jsr_w , "jsr_w" , "boooo", NULL , T_INT , 0, false);
379 def(_breakpoint , "breakpoint" , "" , NULL , T_VOID , 0, true);
380
381 // JVM bytecodes
382 // bytecode bytecode name format wide f. result tp stk traps std code
383
384 def(_fast_agetfield , "fast_agetfield" , "bjj" , NULL , T_OBJECT , 0, true , _getfield );
385 def(_fast_bgetfield , "fast_bgetfield" , "bjj" , NULL , T_INT , 0, true , _getfield );
386 def(_fast_cgetfield , "fast_cgetfield" , "bjj" , NULL , T_CHAR , 0, true , _getfield );
387 def(_fast_dgetfield , "fast_dgetfield" , "bjj" , NULL , T_DOUBLE , 0, true , _getfield );
388 def(_fast_fgetfield , "fast_fgetfield" , "bjj" , NULL , T_FLOAT , 0, true , _getfield );
389 def(_fast_igetfield , "fast_igetfield" , "bjj" , NULL , T_INT , 0, true , _getfield );
390 def(_fast_lgetfield , "fast_lgetfield" , "bjj" , NULL , T_LONG , 0, true , _getfield );
391 def(_fast_sgetfield , "fast_sgetfield" , "bjj" , NULL , T_SHORT , 0, true , _getfield );
392
393 def(_fast_aputfield , "fast_aputfield" , "bjj" , NULL , T_OBJECT , 0, true , _putfield );
394 def(_fast_bputfield , "fast_bputfield" , "bjj" , NULL , T_INT , 0, true , _putfield );
395 def(_fast_cputfield , "fast_cputfield" , "bjj" , NULL , T_CHAR , 0, true , _putfield );
396 def(_fast_dputfield , "fast_dputfield" , "bjj" , NULL , T_DOUBLE , 0, true , _putfield );
397 def(_fast_fputfield , "fast_fputfield" , "bjj" , NULL , T_FLOAT , 0, true , _putfield );
398 def(_fast_iputfield , "fast_iputfield" , "bjj" , NULL , T_INT , 0, true , _putfield );
399 def(_fast_lputfield , "fast_lputfield" , "bjj" , NULL , T_LONG , 0, true , _putfield );
400 def(_fast_sputfield , "fast_sputfield" , "bjj" , NULL , T_SHORT , 0, true , _putfield );
401
402 def(_fast_aload_0 , "fast_aload_0" , "b" , NULL , T_OBJECT , 1, true , _aload_0 );
403 def(_fast_iaccess_0 , "fast_iaccess_0" , "b_jj" , NULL , T_INT , 1, true , _aload_0 );
404 def(_fast_aaccess_0 , "fast_aaccess_0" , "b_jj" , NULL , T_OBJECT , 1, true , _aload_0 );
405 def(_fast_faccess_0 , "fast_faccess_0" , "b_jj" , NULL , T_OBJECT , 1, true , _aload_0 );
406
407 def(_fast_iload , "fast_iload" , "bi" , NULL , T_INT , 1, false, _iload);
408 def(_fast_iload2 , "fast_iload2" , "bi_i" , NULL , T_INT , 2, false, _iload);
409 def(_fast_icaload , "fast_icaload" , "bi_" , NULL , T_INT , 0, false, _iload);
410
411 // Faster method invocation.
412 def(_fast_invokevfinal , "fast_invokevfinal" , "bjj" , NULL , T_ILLEGAL, -1, true, _invokevirtual );
413
414 def(_fast_linearswitch , "fast_linearswitch" , "" , NULL , T_VOID , -1, false, _lookupswitch );
415 def(_fast_binaryswitch , "fast_binaryswitch" , "" , NULL , T_VOID , -1, false, _lookupswitch );
416
417 def(_return_register_finalizer , "return_register_finalizer" , "b" , NULL , T_VOID , 0, true, _return);
418
419 def(_shouldnotreachhere , "_shouldnotreachhere" , "b" , NULL , T_VOID , 0, false);
420
421 // platform specific JVM bytecodes
422 pd_initialize();
423
424 // compare can_trap information for each bytecode with the
425 // can_trap information for the corresponding base bytecode
426 // (if a rewritten bytecode can trap, so must the base bytecode)
427 #ifdef ASSERT
428 { for (int i = 0; i < number_of_codes; i++) {
429 if (is_defined(i)) {
430 Code code = cast(i);
431 Code java = java_code(code);
432 if (can_trap(code) && !can_trap(java)) fatal2("%s can trap => %s can trap, too", name(code), name(java));
433 }
434 }
435 }
436 #endif
437
438 // initialization successful
439 _is_initialized = true;
440 }
441
442
443 void bytecodes_init() {
444 Bytecodes::initialize();
445 }
446
447 // Restore optimization
448 #ifdef _M_AMD64
449 #pragma optimize ("", on)
450 #endif