Wed, 03 Jul 2019 20:42:37 +0800
Merge
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 */
25 /*
26 * This file has been modified by Loongson Technology in 2015. These
27 * modifications are Copyright (c) 2015 Loongson Technology, and are made
28 * available on the same license terms set forth above.
29 */
31 #ifndef SHARE_VM_INTERPRETER_BYTECODES_HPP
32 #define SHARE_VM_INTERPRETER_BYTECODES_HPP
34 #include "memory/allocation.hpp"
35 #include "utilities/top.hpp"
37 // Bytecodes specifies all bytecodes used in the VM and
38 // provides utility functions to get bytecode attributes.
40 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/interpreter/Bytecodes.java
41 class Bytecodes: AllStatic {
42 public:
43 enum Code {
44 _illegal = -1,
46 // Java bytecodes
47 _nop = 0, // 0x00
48 _aconst_null = 1, // 0x01
49 _iconst_m1 = 2, // 0x02
50 _iconst_0 = 3, // 0x03
51 _iconst_1 = 4, // 0x04
52 _iconst_2 = 5, // 0x05
53 _iconst_3 = 6, // 0x06
54 _iconst_4 = 7, // 0x07
55 _iconst_5 = 8, // 0x08
56 _lconst_0 = 9, // 0x09
57 _lconst_1 = 10, // 0x0a
58 _fconst_0 = 11, // 0x0b
59 _fconst_1 = 12, // 0x0c
60 _fconst_2 = 13, // 0x0d
61 _dconst_0 = 14, // 0x0e
62 _dconst_1 = 15, // 0x0f
63 _bipush = 16, // 0x10
64 _sipush = 17, // 0x11
65 _ldc = 18, // 0x12
66 _ldc_w = 19, // 0x13
67 _ldc2_w = 20, // 0x14
68 _iload = 21, // 0x15
69 _lload = 22, // 0x16
70 _fload = 23, // 0x17
71 _dload = 24, // 0x18
72 _aload = 25, // 0x19
73 _iload_0 = 26, // 0x1a
74 _iload_1 = 27, // 0x1b
75 _iload_2 = 28, // 0x1c
76 _iload_3 = 29, // 0x1d
77 _lload_0 = 30, // 0x1e
78 _lload_1 = 31, // 0x1f
79 _lload_2 = 32, // 0x20
80 _lload_3 = 33, // 0x21
81 _fload_0 = 34, // 0x22
82 _fload_1 = 35, // 0x23
83 _fload_2 = 36, // 0x24
84 _fload_3 = 37, // 0x25
85 _dload_0 = 38, // 0x26
86 _dload_1 = 39, // 0x27
87 _dload_2 = 40, // 0x28
88 _dload_3 = 41, // 0x29
89 _aload_0 = 42, // 0x2a
90 _aload_1 = 43, // 0x2b
91 _aload_2 = 44, // 0x2c
92 _aload_3 = 45, // 0x2d
93 _iaload = 46, // 0x2e
94 _laload = 47, // 0x2f
95 _faload = 48, // 0x30
96 _daload = 49, // 0x31
97 _aaload = 50, // 0x32
98 _baload = 51, // 0x33
99 _caload = 52, // 0x34
100 _saload = 53, // 0x35
101 _istore = 54, // 0x36
102 _lstore = 55, // 0x37
103 _fstore = 56, // 0x38
104 _dstore = 57, // 0x39
105 _astore = 58, // 0x3a
106 _istore_0 = 59, // 0x3b
107 _istore_1 = 60, // 0x3c
108 _istore_2 = 61, // 0x3d
109 _istore_3 = 62, // 0x3e
110 _lstore_0 = 63, // 0x3f
111 _lstore_1 = 64, // 0x40
112 _lstore_2 = 65, // 0x41
113 _lstore_3 = 66, // 0x42
114 _fstore_0 = 67, // 0x43
115 _fstore_1 = 68, // 0x44
116 _fstore_2 = 69, // 0x45
117 _fstore_3 = 70, // 0x46
118 _dstore_0 = 71, // 0x47
119 _dstore_1 = 72, // 0x48
120 _dstore_2 = 73, // 0x49
121 _dstore_3 = 74, // 0x4a
122 _astore_0 = 75, // 0x4b
123 _astore_1 = 76, // 0x4c
124 _astore_2 = 77, // 0x4d
125 _astore_3 = 78, // 0x4e
126 _iastore = 79, // 0x4f
127 _lastore = 80, // 0x50
128 _fastore = 81, // 0x51
129 _dastore = 82, // 0x52
130 _aastore = 83, // 0x53
131 _bastore = 84, // 0x54
132 _castore = 85, // 0x55
133 _sastore = 86, // 0x56
134 _pop = 87, // 0x57
135 _pop2 = 88, // 0x58
136 _dup = 89, // 0x59
137 _dup_x1 = 90, // 0x5a
138 _dup_x2 = 91, // 0x5b
139 _dup2 = 92, // 0x5c
140 _dup2_x1 = 93, // 0x5d
141 _dup2_x2 = 94, // 0x5e
142 _swap = 95, // 0x5f
143 _iadd = 96, // 0x60
144 _ladd = 97, // 0x61
145 _fadd = 98, // 0x62
146 _dadd = 99, // 0x63
147 _isub = 100, // 0x64
148 _lsub = 101, // 0x65
149 _fsub = 102, // 0x66
150 _dsub = 103, // 0x67
151 _imul = 104, // 0x68
152 _lmul = 105, // 0x69
153 _fmul = 106, // 0x6a
154 _dmul = 107, // 0x6b
155 _idiv = 108, // 0x6c
156 _ldiv = 109, // 0x6d
157 _fdiv = 110, // 0x6e
158 _ddiv = 111, // 0x6f
159 _irem = 112, // 0x70
160 _lrem = 113, // 0x71
161 _frem = 114, // 0x72
162 _drem = 115, // 0x73
163 _ineg = 116, // 0x74
164 _lneg = 117, // 0x75
165 _fneg = 118, // 0x76
166 _dneg = 119, // 0x77
167 _ishl = 120, // 0x78
168 _lshl = 121, // 0x79
169 _ishr = 122, // 0x7a
170 _lshr = 123, // 0x7b
171 _iushr = 124, // 0x7c
172 _lushr = 125, // 0x7d
173 _iand = 126, // 0x7e
174 _land = 127, // 0x7f
175 _ior = 128, // 0x80
176 _lor = 129, // 0x81
177 _ixor = 130, // 0x82
178 _lxor = 131, // 0x83
179 _iinc = 132, // 0x84
180 _i2l = 133, // 0x85
181 _i2f = 134, // 0x86
182 _i2d = 135, // 0x87
183 _l2i = 136, // 0x88
184 _l2f = 137, // 0x89
185 _l2d = 138, // 0x8a
186 _f2i = 139, // 0x8b
187 _f2l = 140, // 0x8c
188 _f2d = 141, // 0x8d
189 _d2i = 142, // 0x8e
190 _d2l = 143, // 0x8f
191 _d2f = 144, // 0x90
192 _i2b = 145, // 0x91
193 _i2c = 146, // 0x92
194 _i2s = 147, // 0x93
195 _lcmp = 148, // 0x94
196 _fcmpl = 149, // 0x95
197 _fcmpg = 150, // 0x96
198 _dcmpl = 151, // 0x97
199 _dcmpg = 152, // 0x98
200 _ifeq = 153, // 0x99
201 _ifne = 154, // 0x9a
202 _iflt = 155, // 0x9b
203 _ifge = 156, // 0x9c
204 _ifgt = 157, // 0x9d
205 _ifle = 158, // 0x9e
206 _if_icmpeq = 159, // 0x9f
207 _if_icmpne = 160, // 0xa0
208 _if_icmplt = 161, // 0xa1
209 _if_icmpge = 162, // 0xa2
210 _if_icmpgt = 163, // 0xa3
211 _if_icmple = 164, // 0xa4
212 _if_acmpeq = 165, // 0xa5
213 _if_acmpne = 166, // 0xa6
214 _goto = 167, // 0xa7
215 _jsr = 168, // 0xa8
216 _ret = 169, // 0xa9
217 _tableswitch = 170, // 0xaa
218 _lookupswitch = 171, // 0xab
219 _ireturn = 172, // 0xac
220 _lreturn = 173, // 0xad
221 _freturn = 174, // 0xae
222 _dreturn = 175, // 0xaf
223 _areturn = 176, // 0xb0
224 _return = 177, // 0xb1
225 _getstatic = 178, // 0xb2
226 _putstatic = 179, // 0xb3
227 _getfield = 180, // 0xb4
228 _putfield = 181, // 0xb5
229 _invokevirtual = 182, // 0xb6
230 _invokespecial = 183, // 0xb7
231 _invokestatic = 184, // 0xb8
232 _invokeinterface = 185, // 0xb9
233 _invokedynamic = 186, // 0xba // if EnableInvokeDynamic
234 _new = 187, // 0xbb
235 _newarray = 188, // 0xbc
236 _anewarray = 189, // 0xbd
237 _arraylength = 190, // 0xbe
238 _athrow = 191, // 0xbf
239 _checkcast = 192, // 0xc0
240 _instanceof = 193, // 0xc1
241 _monitorenter = 194, // 0xc2
242 _monitorexit = 195, // 0xc3
243 _wide = 196, // 0xc4
244 _multianewarray = 197, // 0xc5
245 _ifnull = 198, // 0xc6
246 _ifnonnull = 199, // 0xc7
247 _goto_w = 200, // 0xc8
248 _jsr_w = 201, // 0xc9
249 _breakpoint = 202, // 0xca
251 number_of_java_codes,
253 // JVM bytecodes
254 _fast_agetfield = number_of_java_codes,
255 _fast_bgetfield ,
256 _fast_cgetfield ,
257 _fast_dgetfield ,
258 _fast_fgetfield ,
259 _fast_igetfield ,
260 _fast_lgetfield ,
261 _fast_sgetfield ,
263 _fast_aputfield ,
264 _fast_bputfield ,
265 _fast_zputfield ,
266 _fast_cputfield ,
267 _fast_dputfield ,
268 _fast_fputfield ,
269 _fast_iputfield ,
270 _fast_lputfield ,
271 _fast_sputfield ,
273 _fast_aload_0 ,
274 _fast_iaccess_0 ,
275 _fast_aaccess_0 ,
276 _fast_faccess_0 ,
278 _fast_iload ,
279 _fast_iload2 ,
280 _fast_icaload ,
282 _fast_invokevfinal ,
283 _fast_linearswitch ,
284 _fast_binaryswitch ,
286 // special handling of oop constants:
287 _fast_aldc ,
288 _fast_aldc_w ,
290 _return_register_finalizer ,
292 // special handling of signature-polymorphic methods:
293 _invokehandle ,
295 _shouldnotreachhere, // For debugging
297 // Platform specific JVM bytecodes
298 #ifdef TARGET_ARCH_x86
299 # include "bytecodes_x86.hpp"
300 #endif
301 #ifdef TARGET_ARCH_mips
302 # include "bytecodes_mips.hpp"
303 #endif
304 #ifdef TARGET_ARCH_sparc
305 # include "bytecodes_sparc.hpp"
306 #endif
307 #ifdef TARGET_ARCH_zero
308 # include "bytecodes_zero.hpp"
309 #endif
310 #ifdef TARGET_ARCH_arm
311 # include "bytecodes_arm.hpp"
312 #endif
313 #ifdef TARGET_ARCH_ppc
314 # include "bytecodes_ppc.hpp"
315 #endif
318 number_of_codes
319 };
321 // Flag bits derived from format strings, can_trap, can_rewrite, etc.:
322 enum Flags {
323 // semantic flags:
324 _bc_can_trap = 1<<0, // bytecode execution can trap or block
325 _bc_can_rewrite = 1<<1, // bytecode execution has an alternate form
327 // format bits (determined only by the format string):
328 _fmt_has_c = 1<<2, // constant, such as sipush "bcc"
329 _fmt_has_j = 1<<3, // constant pool cache index, such as getfield "bjj"
330 _fmt_has_k = 1<<4, // constant pool index, such as ldc "bk"
331 _fmt_has_i = 1<<5, // local index, such as iload
332 _fmt_has_o = 1<<6, // offset, such as ifeq
333 _fmt_has_nbo = 1<<7, // contains native-order field(s)
334 _fmt_has_u2 = 1<<8, // contains double-byte field(s)
335 _fmt_has_u4 = 1<<9, // contains quad-byte field
336 _fmt_not_variable = 1<<10, // not of variable length (simple or wide)
337 _fmt_not_simple = 1<<11, // either wide or variable length
338 _all_fmt_bits = (_fmt_not_simple*2 - _fmt_has_c),
340 // Example derived format syndromes:
341 _fmt_b = _fmt_not_variable,
342 _fmt_bc = _fmt_b | _fmt_has_c,
343 _fmt_bi = _fmt_b | _fmt_has_i,
344 _fmt_bkk = _fmt_b | _fmt_has_k | _fmt_has_u2,
345 _fmt_bJJ = _fmt_b | _fmt_has_j | _fmt_has_u2 | _fmt_has_nbo,
346 _fmt_bo2 = _fmt_b | _fmt_has_o | _fmt_has_u2,
347 _fmt_bo4 = _fmt_b | _fmt_has_o | _fmt_has_u4
348 };
350 private:
351 static bool _is_initialized;
352 static const char* _name [number_of_codes];
353 static BasicType _result_type [number_of_codes];
354 static s_char _depth [number_of_codes];
355 static u_char _lengths [number_of_codes];
356 static Code _java_code [number_of_codes];
357 static jchar _flags [(1<<BitsPerByte)*2]; // all second page for wide formats
359 static void def(Code code, const char* name, const char* format, const char* wide_format, BasicType result_type, int depth, bool can_trap);
360 static void def(Code code, const char* name, const char* format, const char* wide_format, BasicType result_type, int depth, bool can_trap, Code java_code);
361 static void pd_initialize(); // platform specific initialization
362 static Code pd_base_code_for(Code code); // platform specific base_code_for implementation
364 // Verify that bcp points into method
365 #ifdef ASSERT
366 static bool check_method(const Method* method, address bcp);
367 #endif
368 static bool check_must_rewrite(Bytecodes::Code bc);
370 public:
371 // Conversion
372 static void check (Code code) { assert(is_defined(code), err_msg("illegal code: %d", (int)code)); }
373 static void wide_check (Code code) { assert(wide_is_defined(code), err_msg("illegal code: %d", (int)code)); }
374 static Code cast (int code) { return (Code)code; }
377 // Fetch a bytecode, hiding breakpoints as necessary. The method
378 // argument is used for conversion of breakpoints into the original
379 // bytecode. The CI uses these methods but guarantees that
380 // breakpoints are hidden so the method argument should be passed as
381 // NULL since in that case the bcp and Method* are unrelated
382 // memory.
383 static Code code_at(const Method* method, address bcp) {
384 assert(method == NULL || check_method(method, bcp), "bcp must point into method");
385 Code code = cast(*bcp);
386 assert(code != _breakpoint || method != NULL, "need Method* to decode breakpoint");
387 return (code != _breakpoint) ? code : non_breakpoint_code_at(method, bcp);
388 }
389 static Code java_code_at(const Method* method, address bcp) {
390 return java_code(code_at(method, bcp));
391 }
393 // Fetch a bytecode or a breakpoint:
394 static Code code_or_bp_at(address bcp) { return (Code)cast(*bcp); }
396 static Code code_at(Method* method, int bci);
397 static bool is_active_breakpoint_at(address bcp) { return (Code)*bcp == _breakpoint; }
399 // find a bytecode, behind a breakpoint if necessary:
400 static Code non_breakpoint_code_at(const Method* method, address bcp);
402 // Bytecode attributes
403 static bool is_defined (int code) { return 0 <= code && code < number_of_codes && flags(code, false) != 0; }
404 static bool wide_is_defined(int code) { return is_defined(code) && flags(code, true) != 0; }
405 static const char* name (Code code) { check(code); return _name [code]; }
406 static BasicType result_type (Code code) { check(code); return _result_type [code]; }
407 static int depth (Code code) { check(code); return _depth [code]; }
408 // Note: Length functions must return <=0 for invalid bytecodes.
409 // Calling check(code) in length functions would throw an unwanted assert.
410 static int length_for (Code code) { /*no check*/ return _lengths [code] & 0xF; }
411 static int wide_length_for(Code code) { /*no check*/ return _lengths [code] >> 4; }
412 static bool can_trap (Code code) { check(code); return has_all_flags(code, _bc_can_trap, false); }
413 static Code java_code (Code code) { check(code); return _java_code [code]; }
414 static bool can_rewrite (Code code) { check(code); return has_all_flags(code, _bc_can_rewrite, false); }
415 static bool must_rewrite(Bytecodes::Code code) { return can_rewrite(code) && check_must_rewrite(code); }
416 static bool native_byte_order(Code code) { check(code); return has_all_flags(code, _fmt_has_nbo, false); }
417 static bool uses_cp_cache (Code code) { check(code); return has_all_flags(code, _fmt_has_j, false); }
418 // if 'end' is provided, it indicates the end of the code buffer which
419 // should not be read past when parsing.
420 static int special_length_at(Bytecodes::Code code, address bcp, address end = NULL);
421 static int special_length_at(Method* method, address bcp, address end = NULL) { return special_length_at(code_at(method, bcp), bcp, end); }
422 static int raw_special_length_at(address bcp, address end = NULL);
423 static int length_for_code_at(Bytecodes::Code code, address bcp) { int l = length_for(code); return l > 0 ? l : special_length_at(code, bcp); }
424 static int length_at (Method* method, address bcp) { return length_for_code_at(code_at(method, bcp), bcp); }
425 static int java_length_at (Method* method, address bcp) { return length_for_code_at(java_code_at(method, bcp), bcp); }
426 static bool is_java_code (Code code) { return 0 <= code && code < number_of_java_codes; }
428 static bool is_aload (Code code) { return (code == _aload || code == _aload_0 || code == _aload_1
429 || code == _aload_2 || code == _aload_3); }
430 static bool is_astore (Code code) { return (code == _astore || code == _astore_0 || code == _astore_1
431 || code == _astore_2 || code == _astore_3); }
433 static bool is_store_into_local(Code code){ return (_istore <= code && code <= _astore_3); }
434 static bool is_const (Code code) { return (_aconst_null <= code && code <= _ldc2_w); }
435 static bool is_zero_const (Code code) { return (code == _aconst_null || code == _iconst_0
436 || code == _fconst_0 || code == _dconst_0); }
437 static bool is_return (Code code) { return (_ireturn <= code && code <= _return); }
438 static bool is_invoke (Code code) { return (_invokevirtual <= code && code <= _invokedynamic); }
439 static bool has_receiver (Code code) { assert(is_invoke(code), ""); return code == _invokevirtual ||
440 code == _invokespecial ||
441 code == _invokeinterface; }
442 static bool has_optional_appendix(Code code) { return code == _invokedynamic || code == _invokehandle; }
444 static int compute_flags (const char* format, int more_flags = 0); // compute the flags
445 static int flags (int code, bool is_wide) {
446 assert(code == (u_char)code, "must be a byte");
447 return _flags[code + (is_wide ? (1<<BitsPerByte) : 0)];
448 }
449 static int format_bits (Code code, bool is_wide) { return flags(code, is_wide) & _all_fmt_bits; }
450 static bool has_all_flags (Code code, int test_flags, bool is_wide) {
451 return (flags(code, is_wide) & test_flags) == test_flags;
452 }
454 // Initialization
455 static void initialize ();
456 };
458 #endif // SHARE_VM_INTERPRETER_BYTECODES_HPP