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src/share/vm/interpreter/bytecodes.hpp@e9ff18c4ace7 (annotated)

src/share/vm/interpreter/bytecodes.hpp

Wed, 02 Jun 2010 22:45:42 -0700

author

jrose

date

Wed, 02 Jun 2010 22:45:42 -0700

changeset 1934

e9ff18c4ace7

parent 1907

c18cbe5936b8

parent 1925

de91a2f25c7e

child 1957

136b78722a08

permissions

-rw-r--r--

Merge

duke@435	1	/*
jrose@1934	2	* Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	// Bytecodes specifies all bytecodes used in the VM and
duke@435	26	// provides utility functions to get bytecode attributes.
duke@435	27
duke@435	28	// NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/interpreter/Bytecodes.java
duke@435	29	class Bytecodes: AllStatic {
duke@435	30	public:
duke@435	31	enum Code {
duke@435	32	_illegal = -1,
duke@435	33
duke@435	34	// Java bytecodes
duke@435	35	_nop = 0, // 0x00
duke@435	36	_aconst_null = 1, // 0x01
duke@435	37	_iconst_m1 = 2, // 0x02
duke@435	38	_iconst_0 = 3, // 0x03
duke@435	39	_iconst_1 = 4, // 0x04
duke@435	40	_iconst_2 = 5, // 0x05
duke@435	41	_iconst_3 = 6, // 0x06
duke@435	42	_iconst_4 = 7, // 0x07
duke@435	43	_iconst_5 = 8, // 0x08
duke@435	44	_lconst_0 = 9, // 0x09
duke@435	45	_lconst_1 = 10, // 0x0a
duke@435	46	_fconst_0 = 11, // 0x0b
duke@435	47	_fconst_1 = 12, // 0x0c
duke@435	48	_fconst_2 = 13, // 0x0d
duke@435	49	_dconst_0 = 14, // 0x0e
duke@435	50	_dconst_1 = 15, // 0x0f
duke@435	51	_bipush = 16, // 0x10
duke@435	52	_sipush = 17, // 0x11
duke@435	53	_ldc = 18, // 0x12
duke@435	54	_ldc_w = 19, // 0x13
duke@435	55	_ldc2_w = 20, // 0x14
duke@435	56	_iload = 21, // 0x15
duke@435	57	_lload = 22, // 0x16
duke@435	58	_fload = 23, // 0x17
duke@435	59	_dload = 24, // 0x18
duke@435	60	_aload = 25, // 0x19
duke@435	61	_iload_0 = 26, // 0x1a
duke@435	62	_iload_1 = 27, // 0x1b
duke@435	63	_iload_2 = 28, // 0x1c
duke@435	64	_iload_3 = 29, // 0x1d
duke@435	65	_lload_0 = 30, // 0x1e
duke@435	66	_lload_1 = 31, // 0x1f
duke@435	67	_lload_2 = 32, // 0x20
duke@435	68	_lload_3 = 33, // 0x21
duke@435	69	_fload_0 = 34, // 0x22
duke@435	70	_fload_1 = 35, // 0x23
duke@435	71	_fload_2 = 36, // 0x24
duke@435	72	_fload_3 = 37, // 0x25
duke@435	73	_dload_0 = 38, // 0x26
duke@435	74	_dload_1 = 39, // 0x27
duke@435	75	_dload_2 = 40, // 0x28
duke@435	76	_dload_3 = 41, // 0x29
duke@435	77	_aload_0 = 42, // 0x2a
duke@435	78	_aload_1 = 43, // 0x2b
duke@435	79	_aload_2 = 44, // 0x2c
duke@435	80	_aload_3 = 45, // 0x2d
duke@435	81	_iaload = 46, // 0x2e
duke@435	82	_laload = 47, // 0x2f
duke@435	83	_faload = 48, // 0x30
duke@435	84	_daload = 49, // 0x31
duke@435	85	_aaload = 50, // 0x32
duke@435	86	_baload = 51, // 0x33
duke@435	87	_caload = 52, // 0x34
duke@435	88	_saload = 53, // 0x35
duke@435	89	_istore = 54, // 0x36
duke@435	90	_lstore = 55, // 0x37
duke@435	91	_fstore = 56, // 0x38
duke@435	92	_dstore = 57, // 0x39
duke@435	93	_astore = 58, // 0x3a
duke@435	94	_istore_0 = 59, // 0x3b
duke@435	95	_istore_1 = 60, // 0x3c
duke@435	96	_istore_2 = 61, // 0x3d
duke@435	97	_istore_3 = 62, // 0x3e
duke@435	98	_lstore_0 = 63, // 0x3f
duke@435	99	_lstore_1 = 64, // 0x40
duke@435	100	_lstore_2 = 65, // 0x41
duke@435	101	_lstore_3 = 66, // 0x42
duke@435	102	_fstore_0 = 67, // 0x43
duke@435	103	_fstore_1 = 68, // 0x44
duke@435	104	_fstore_2 = 69, // 0x45
duke@435	105	_fstore_3 = 70, // 0x46
duke@435	106	_dstore_0 = 71, // 0x47
duke@435	107	_dstore_1 = 72, // 0x48
duke@435	108	_dstore_2 = 73, // 0x49
duke@435	109	_dstore_3 = 74, // 0x4a
duke@435	110	_astore_0 = 75, // 0x4b
duke@435	111	_astore_1 = 76, // 0x4c
duke@435	112	_astore_2 = 77, // 0x4d
duke@435	113	_astore_3 = 78, // 0x4e
duke@435	114	_iastore = 79, // 0x4f
duke@435	115	_lastore = 80, // 0x50
duke@435	116	_fastore = 81, // 0x51
duke@435	117	_dastore = 82, // 0x52
duke@435	118	_aastore = 83, // 0x53
duke@435	119	_bastore = 84, // 0x54
duke@435	120	_castore = 85, // 0x55
duke@435	121	_sastore = 86, // 0x56
duke@435	122	_pop = 87, // 0x57
duke@435	123	_pop2 = 88, // 0x58
duke@435	124	_dup = 89, // 0x59
duke@435	125	_dup_x1 = 90, // 0x5a
duke@435	126	_dup_x2 = 91, // 0x5b
duke@435	127	_dup2 = 92, // 0x5c
duke@435	128	_dup2_x1 = 93, // 0x5d
duke@435	129	_dup2_x2 = 94, // 0x5e
duke@435	130	_swap = 95, // 0x5f
duke@435	131	_iadd = 96, // 0x60
duke@435	132	_ladd = 97, // 0x61
duke@435	133	_fadd = 98, // 0x62
duke@435	134	_dadd = 99, // 0x63
duke@435	135	_isub = 100, // 0x64
duke@435	136	_lsub = 101, // 0x65
duke@435	137	_fsub = 102, // 0x66
duke@435	138	_dsub = 103, // 0x67
duke@435	139	_imul = 104, // 0x68
duke@435	140	_lmul = 105, // 0x69
duke@435	141	_fmul = 106, // 0x6a
duke@435	142	_dmul = 107, // 0x6b
duke@435	143	_idiv = 108, // 0x6c
duke@435	144	_ldiv = 109, // 0x6d
duke@435	145	_fdiv = 110, // 0x6e
duke@435	146	_ddiv = 111, // 0x6f
duke@435	147	_irem = 112, // 0x70
duke@435	148	_lrem = 113, // 0x71
duke@435	149	_frem = 114, // 0x72
duke@435	150	_drem = 115, // 0x73
duke@435	151	_ineg = 116, // 0x74
duke@435	152	_lneg = 117, // 0x75
duke@435	153	_fneg = 118, // 0x76
duke@435	154	_dneg = 119, // 0x77
duke@435	155	_ishl = 120, // 0x78
duke@435	156	_lshl = 121, // 0x79
duke@435	157	_ishr = 122, // 0x7a
duke@435	158	_lshr = 123, // 0x7b
duke@435	159	_iushr = 124, // 0x7c
duke@435	160	_lushr = 125, // 0x7d
duke@435	161	_iand = 126, // 0x7e
duke@435	162	_land = 127, // 0x7f
duke@435	163	_ior = 128, // 0x80
duke@435	164	_lor = 129, // 0x81
duke@435	165	_ixor = 130, // 0x82
duke@435	166	_lxor = 131, // 0x83
duke@435	167	_iinc = 132, // 0x84
duke@435	168	_i2l = 133, // 0x85
duke@435	169	_i2f = 134, // 0x86
duke@435	170	_i2d = 135, // 0x87
duke@435	171	_l2i = 136, // 0x88
duke@435	172	_l2f = 137, // 0x89
duke@435	173	_l2d = 138, // 0x8a
duke@435	174	_f2i = 139, // 0x8b
duke@435	175	_f2l = 140, // 0x8c
duke@435	176	_f2d = 141, // 0x8d
duke@435	177	_d2i = 142, // 0x8e
duke@435	178	_d2l = 143, // 0x8f
duke@435	179	_d2f = 144, // 0x90
duke@435	180	_i2b = 145, // 0x91
duke@435	181	_i2c = 146, // 0x92
duke@435	182	_i2s = 147, // 0x93
duke@435	183	_lcmp = 148, // 0x94
duke@435	184	_fcmpl = 149, // 0x95
duke@435	185	_fcmpg = 150, // 0x96
duke@435	186	_dcmpl = 151, // 0x97
duke@435	187	_dcmpg = 152, // 0x98
duke@435	188	_ifeq = 153, // 0x99
duke@435	189	_ifne = 154, // 0x9a
duke@435	190	_iflt = 155, // 0x9b
duke@435	191	_ifge = 156, // 0x9c
duke@435	192	_ifgt = 157, // 0x9d
duke@435	193	_ifle = 158, // 0x9e
duke@435	194	_if_icmpeq = 159, // 0x9f
duke@435	195	_if_icmpne = 160, // 0xa0
duke@435	196	_if_icmplt = 161, // 0xa1
duke@435	197	_if_icmpge = 162, // 0xa2
duke@435	198	_if_icmpgt = 163, // 0xa3
duke@435	199	_if_icmple = 164, // 0xa4
duke@435	200	_if_acmpeq = 165, // 0xa5
duke@435	201	_if_acmpne = 166, // 0xa6
duke@435	202	_goto = 167, // 0xa7
duke@435	203	_jsr = 168, // 0xa8
duke@435	204	_ret = 169, // 0xa9
duke@435	205	_tableswitch = 170, // 0xaa
duke@435	206	_lookupswitch = 171, // 0xab
duke@435	207	_ireturn = 172, // 0xac
duke@435	208	_lreturn = 173, // 0xad
duke@435	209	_freturn = 174, // 0xae
duke@435	210	_dreturn = 175, // 0xaf
duke@435	211	_areturn = 176, // 0xb0
duke@435	212	_return = 177, // 0xb1
duke@435	213	_getstatic = 178, // 0xb2
duke@435	214	_putstatic = 179, // 0xb3
duke@435	215	_getfield = 180, // 0xb4
duke@435	216	_putfield = 181, // 0xb5
duke@435	217	_invokevirtual = 182, // 0xb6
duke@435	218	_invokespecial = 183, // 0xb7
duke@435	219	_invokestatic = 184, // 0xb8
duke@435	220	_invokeinterface = 185, // 0xb9
jrose@1161	221	_invokedynamic = 186, // 0xba // if EnableInvokeDynamic
duke@435	222	_new = 187, // 0xbb
duke@435	223	_newarray = 188, // 0xbc
duke@435	224	_anewarray = 189, // 0xbd
duke@435	225	_arraylength = 190, // 0xbe
duke@435	226	_athrow = 191, // 0xbf
duke@435	227	_checkcast = 192, // 0xc0
duke@435	228	_instanceof = 193, // 0xc1
duke@435	229	_monitorenter = 194, // 0xc2
duke@435	230	_monitorexit = 195, // 0xc3
duke@435	231	_wide = 196, // 0xc4
duke@435	232	_multianewarray = 197, // 0xc5
duke@435	233	_ifnull = 198, // 0xc6
duke@435	234	_ifnonnull = 199, // 0xc7
duke@435	235	_goto_w = 200, // 0xc8
duke@435	236	_jsr_w = 201, // 0xc9
duke@435	237	_breakpoint = 202, // 0xca
duke@435	238
duke@435	239	number_of_java_codes,
duke@435	240
duke@435	241	// JVM bytecodes
duke@435	242	_fast_agetfield = number_of_java_codes,
duke@435	243	_fast_bgetfield ,
duke@435	244	_fast_cgetfield ,
duke@435	245	_fast_dgetfield ,
duke@435	246	_fast_fgetfield ,
duke@435	247	_fast_igetfield ,
duke@435	248	_fast_lgetfield ,
duke@435	249	_fast_sgetfield ,
duke@435	250
duke@435	251	_fast_aputfield ,
duke@435	252	_fast_bputfield ,
duke@435	253	_fast_cputfield ,
duke@435	254	_fast_dputfield ,
duke@435	255	_fast_fputfield ,
duke@435	256	_fast_iputfield ,
duke@435	257	_fast_lputfield ,
duke@435	258	_fast_sputfield ,
duke@435	259
duke@435	260	_fast_aload_0 ,
duke@435	261	_fast_iaccess_0 ,
duke@435	262	_fast_aaccess_0 ,
duke@435	263	_fast_faccess_0 ,
duke@435	264
duke@435	265	_fast_iload ,
duke@435	266	_fast_iload2 ,
duke@435	267	_fast_icaload ,
duke@435	268
duke@435	269	_fast_invokevfinal ,
duke@435	270	_fast_linearswitch ,
duke@435	271	_fast_binaryswitch ,
duke@435	272
duke@435	273	_return_register_finalizer ,
duke@435	274
duke@435	275	_shouldnotreachhere, // For debugging
duke@435	276
duke@435	277	// Platform specific JVM bytecodes
duke@435	278	#include "incls/_bytecodes_pd.hpp.incl"
duke@435	279
duke@435	280	number_of_codes
duke@435	281	};
duke@435	282
jrose@1920	283	// Flag bits derived from format strings, can_trap, can_rewrite, etc.:
jrose@1920	284	enum Flags {
jrose@1920	285	// semantic flags:
jrose@1920	286	_bc_can_trap = 1<<0, // bytecode execution can trap or block
jrose@1920	287	_bc_can_rewrite = 1<<1, // bytecode execution has an alternate form
jrose@1920	288
jrose@1920	289	// format bits (determined only by the format string):
jrose@1920	290	_fmt_has_c = 1<<2, // constant, such as sipush "bcc"
jrose@1920	291	_fmt_has_j = 1<<3, // constant pool cache index, such as getfield "bjj"
jrose@1920	292	_fmt_has_k = 1<<4, // constant pool index, such as ldc "bk"
jrose@1920	293	_fmt_has_i = 1<<5, // local index, such as iload
jrose@1920	294	_fmt_has_o = 1<<6, // offset, such as ifeq
jrose@1920	295	_fmt_has_nbo = 1<<7, // contains native-order field(s)
jrose@1920	296	_fmt_has_u2 = 1<<8, // contains double-byte field(s)
jrose@1920	297	_fmt_has_u4 = 1<<9, // contains quad-byte field
jrose@1920	298	_fmt_not_variable = 1<<10, // not of variable length (simple or wide)
jrose@1920	299	_fmt_not_simple = 1<<11, // either wide or variable length
jrose@1920	300	_all_fmt_bits = (_fmt_not_simple*2 - _fmt_has_c),
jrose@1920	301
jrose@1920	302	// Example derived format syndromes:
jrose@1920	303	_fmt_b = _fmt_not_variable,
jrose@1920	304	_fmt_bc = _fmt_b | _fmt_has_c,
jrose@1920	305	_fmt_bi = _fmt_b | _fmt_has_i,
jrose@1920	306	_fmt_bkk = _fmt_b | _fmt_has_k | _fmt_has_u2,
jrose@1920	307	_fmt_bJJ = _fmt_b | _fmt_has_j | _fmt_has_u2 | _fmt_has_nbo,
jrose@1920	308	_fmt_bo2 = _fmt_b | _fmt_has_o | _fmt_has_u2,
jrose@1920	309	_fmt_bo4 = _fmt_b | _fmt_has_o | _fmt_has_u4
jrose@1920	310	};
jrose@1920	311
duke@435	312	private:
duke@435	313	static bool _is_initialized;
duke@435	314	static const char* _name [number_of_codes];
duke@435	315	static BasicType _result_type [number_of_codes];
duke@435	316	static s_char _depth [number_of_codes];
jrose@1920	317	static u_char _lengths [number_of_codes];
duke@435	318	static Code _java_code [number_of_codes];
jrose@1920	319	static jchar _flags [(1<<BitsPerByte)*2]; // all second page for wide formats
duke@435	320
duke@435	321	static void def(Code code, const char* name, const char* format, const char* wide_format, BasicType result_type, int depth, bool can_trap);
duke@435	322	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);
duke@435	323	static void pd_initialize(); // platform specific initialization
duke@435	324	static Code pd_base_code_for(Code code); // platform specific base_code_for implementation
duke@435	325
duke@435	326	public:
duke@435	327	// Conversion
duke@435	328	static void check (Code code) { assert(is_defined(code), "illegal code"); }
duke@435	329	static void wide_check (Code code) { assert(wide_is_defined(code), "illegal code"); }
duke@435	330	static Code cast (int code) { return (Code)code; }
duke@435	331
duke@435	332
duke@435	333	// Fetch a bytecode, hiding breakpoints as necessary:
duke@435	334	static Code code_at(address bcp, methodOop method = NULL) {
duke@435	335	Code code = cast(*bcp); return (code != _breakpoint) ? code : non_breakpoint_code_at(bcp, method);
duke@435	336	}
duke@435	337	static Code java_code_at(address bcp, methodOop method = NULL) {
duke@435	338	return java_code(code_at(bcp, method));
duke@435	339	}
duke@435	340
duke@435	341	// Fetch a bytecode or a breakpoint:
duke@435	342	static Code code_or_bp_at(address bcp) { return (Code)cast(*bcp); }
duke@435	343
duke@435	344	static Code code_at(methodOop method, int bci);
duke@435	345	static bool is_active_breakpoint_at(address bcp) { return (Code)*bcp == _breakpoint; }
duke@435	346
duke@435	347	// find a bytecode, behind a breakpoint if necessary:
duke@435	348	static Code non_breakpoint_code_at(address bcp, methodOop method = NULL);
duke@435	349
duke@435	350	// Bytecode attributes
jrose@1920	351	static bool is_defined (int code) { return 0 <= code && code < number_of_codes && flags(code, false) != 0; }
jrose@1920	352	static bool wide_is_defined(int code) { return is_defined(code) && flags(code, true) != 0; }
duke@435	353	static const char* name (Code code) { check(code); return _name [code]; }
duke@435	354	static BasicType result_type (Code code) { check(code); return _result_type [code]; }
duke@435	355	static int depth (Code code) { check(code); return _depth [code]; }
jrose@1925	356	// Note: Length functions must return <=0 for invalid bytecodes.
jrose@1925	357	// Calling check(code) in length functions would throw an unwanted assert.
jrose@1925	358	static int length_for (Code code) { /*no check*/ return _lengths [code] & 0xF; }
jrose@1925	359	static int wide_length_for(Code code) { /*no check*/ return _lengths [code] >> 4; }
jrose@1920	360	static bool can_trap (Code code) { check(code); return has_all_flags(code, _bc_can_trap, false); }
duke@435	361	static Code java_code (Code code) { check(code); return _java_code [code]; }
jrose@1920	362	static bool can_rewrite (Code code) { check(code); return has_all_flags(code, _bc_can_rewrite, false); }
jrose@1920	363	static bool native_byte_order(Code code) { check(code); return has_all_flags(code, _fmt_has_nbo, false); }
jrose@1920	364	static bool uses_cp_cache (Code code) { check(code); return has_all_flags(code, _fmt_has_j, false); }
kamg@848	365	// if 'end' is provided, it indicates the end of the code buffer which
kamg@848	366	// should not be read past when parsing.
kamg@848	367	static int special_length_at(address bcp, address end = NULL);
kamg@848	368	static int raw_special_length_at(address bcp, address end = NULL);
duke@435	369	static int length_at (address bcp) { int l = length_for(code_at(bcp)); return l > 0 ? l : special_length_at(bcp); }
duke@435	370	static int java_length_at (address bcp) { int l = length_for(java_code_at(bcp)); return l > 0 ? l : special_length_at(bcp); }
duke@435	371	static bool is_java_code (Code code) { return 0 <= code && code < number_of_java_codes; }
duke@435	372
duke@435	373	static bool is_aload (Code code) { return (code == _aload || code == _aload_0 || code == _aload_1
duke@435	374	|| code == _aload_2 || code == _aload_3); }
duke@435	375	static bool is_astore (Code code) { return (code == _astore || code == _astore_0 || code == _astore_1
duke@435	376	|| code == _astore_2 || code == _astore_3); }
duke@435	377
duke@435	378	static bool is_zero_const (Code code) { return (code == _aconst_null || code == _iconst_0
duke@435	379	|| code == _fconst_0 || code == _dconst_0); }
jrose@1920	380	static int compute_flags (const char* format, int more_flags = 0); // compute the flags
jrose@1920	381	static int flags (int code, bool is_wide) {
jrose@1920	382	assert(code == (u_char)code, "must be a byte");
jrose@1920	383	return _flags[code + (is_wide ? (1<<BitsPerByte) : 0)];
jrose@1920	384	}
jrose@1920	385	static int format_bits (Code code, bool is_wide) { return flags(code, is_wide) & _all_fmt_bits; }
jrose@1920	386	static bool has_all_flags (Code code, int test_flags, bool is_wide) {
jrose@1920	387	return (flags(code, is_wide) & test_flags) == test_flags;
jrose@1920	388	}
jrose@1920	389
duke@435	390	// Initialization
duke@435	391	static void initialize ();
duke@435	392	};