2007-12-01 00:00:00 +00:00
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/*
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2010-05-23 01:38:26 -07:00
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* Copyright 1997-2010 Sun Microsystems, Inc. All Rights Reserved.
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2007-12-01 00:00:00 +00:00
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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*/
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// Bytecodes specifies all bytecodes used in the VM and
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// provides utility functions to get bytecode attributes.
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// NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/interpreter/Bytecodes.java
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class Bytecodes: AllStatic {
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public:
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enum Code {
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_illegal = -1,
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// Java bytecodes
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_nop = 0, // 0x00
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_aconst_null = 1, // 0x01
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_iconst_m1 = 2, // 0x02
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_iconst_0 = 3, // 0x03
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_iconst_1 = 4, // 0x04
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_iconst_2 = 5, // 0x05
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_iconst_3 = 6, // 0x06
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_iconst_4 = 7, // 0x07
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_iconst_5 = 8, // 0x08
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_lconst_0 = 9, // 0x09
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_lconst_1 = 10, // 0x0a
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_fconst_0 = 11, // 0x0b
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_fconst_1 = 12, // 0x0c
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_fconst_2 = 13, // 0x0d
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_dconst_0 = 14, // 0x0e
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_dconst_1 = 15, // 0x0f
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_bipush = 16, // 0x10
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_sipush = 17, // 0x11
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_ldc = 18, // 0x12
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_ldc_w = 19, // 0x13
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_ldc2_w = 20, // 0x14
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_iload = 21, // 0x15
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_lload = 22, // 0x16
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_fload = 23, // 0x17
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_dload = 24, // 0x18
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_aload = 25, // 0x19
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_iload_0 = 26, // 0x1a
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_iload_1 = 27, // 0x1b
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_iload_2 = 28, // 0x1c
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_iload_3 = 29, // 0x1d
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_lload_0 = 30, // 0x1e
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_lload_1 = 31, // 0x1f
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_lload_2 = 32, // 0x20
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_lload_3 = 33, // 0x21
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_fload_0 = 34, // 0x22
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_fload_1 = 35, // 0x23
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_fload_2 = 36, // 0x24
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_fload_3 = 37, // 0x25
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_dload_0 = 38, // 0x26
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_dload_1 = 39, // 0x27
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_dload_2 = 40, // 0x28
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_dload_3 = 41, // 0x29
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_aload_0 = 42, // 0x2a
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_aload_1 = 43, // 0x2b
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_aload_2 = 44, // 0x2c
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_aload_3 = 45, // 0x2d
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_iaload = 46, // 0x2e
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_laload = 47, // 0x2f
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_faload = 48, // 0x30
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_daload = 49, // 0x31
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_aaload = 50, // 0x32
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_baload = 51, // 0x33
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_caload = 52, // 0x34
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_saload = 53, // 0x35
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_istore = 54, // 0x36
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_lstore = 55, // 0x37
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_fstore = 56, // 0x38
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_dstore = 57, // 0x39
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_astore = 58, // 0x3a
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_istore_0 = 59, // 0x3b
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_istore_1 = 60, // 0x3c
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_istore_2 = 61, // 0x3d
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_istore_3 = 62, // 0x3e
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_lstore_0 = 63, // 0x3f
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_lstore_1 = 64, // 0x40
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_lstore_2 = 65, // 0x41
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_lstore_3 = 66, // 0x42
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_fstore_0 = 67, // 0x43
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_fstore_1 = 68, // 0x44
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_fstore_2 = 69, // 0x45
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_fstore_3 = 70, // 0x46
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_dstore_0 = 71, // 0x47
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_dstore_1 = 72, // 0x48
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_dstore_2 = 73, // 0x49
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_dstore_3 = 74, // 0x4a
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_astore_0 = 75, // 0x4b
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_astore_1 = 76, // 0x4c
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_astore_2 = 77, // 0x4d
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_astore_3 = 78, // 0x4e
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_iastore = 79, // 0x4f
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_lastore = 80, // 0x50
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_fastore = 81, // 0x51
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_dastore = 82, // 0x52
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_aastore = 83, // 0x53
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_bastore = 84, // 0x54
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_castore = 85, // 0x55
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_sastore = 86, // 0x56
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_pop = 87, // 0x57
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_pop2 = 88, // 0x58
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_dup = 89, // 0x59
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_dup_x1 = 90, // 0x5a
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_dup_x2 = 91, // 0x5b
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_dup2 = 92, // 0x5c
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_dup2_x1 = 93, // 0x5d
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_dup2_x2 = 94, // 0x5e
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_swap = 95, // 0x5f
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_iadd = 96, // 0x60
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_ladd = 97, // 0x61
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_fadd = 98, // 0x62
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_dadd = 99, // 0x63
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_isub = 100, // 0x64
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_lsub = 101, // 0x65
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_fsub = 102, // 0x66
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_dsub = 103, // 0x67
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_imul = 104, // 0x68
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_lmul = 105, // 0x69
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_fmul = 106, // 0x6a
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_dmul = 107, // 0x6b
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_idiv = 108, // 0x6c
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_ldiv = 109, // 0x6d
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_fdiv = 110, // 0x6e
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_ddiv = 111, // 0x6f
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_irem = 112, // 0x70
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_lrem = 113, // 0x71
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_frem = 114, // 0x72
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_drem = 115, // 0x73
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_ineg = 116, // 0x74
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_lneg = 117, // 0x75
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_fneg = 118, // 0x76
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_dneg = 119, // 0x77
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_ishl = 120, // 0x78
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_lshl = 121, // 0x79
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_ishr = 122, // 0x7a
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_lshr = 123, // 0x7b
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_iushr = 124, // 0x7c
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_lushr = 125, // 0x7d
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_iand = 126, // 0x7e
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_land = 127, // 0x7f
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_ior = 128, // 0x80
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_lor = 129, // 0x81
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_ixor = 130, // 0x82
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_lxor = 131, // 0x83
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_iinc = 132, // 0x84
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_i2l = 133, // 0x85
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_i2f = 134, // 0x86
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_i2d = 135, // 0x87
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_l2i = 136, // 0x88
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_l2f = 137, // 0x89
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_l2d = 138, // 0x8a
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_f2i = 139, // 0x8b
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_f2l = 140, // 0x8c
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_f2d = 141, // 0x8d
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_d2i = 142, // 0x8e
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_d2l = 143, // 0x8f
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_d2f = 144, // 0x90
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_i2b = 145, // 0x91
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_i2c = 146, // 0x92
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_i2s = 147, // 0x93
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_lcmp = 148, // 0x94
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_fcmpl = 149, // 0x95
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_fcmpg = 150, // 0x96
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_dcmpl = 151, // 0x97
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_dcmpg = 152, // 0x98
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_ifeq = 153, // 0x99
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_ifne = 154, // 0x9a
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_iflt = 155, // 0x9b
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_ifge = 156, // 0x9c
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_ifgt = 157, // 0x9d
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_ifle = 158, // 0x9e
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_if_icmpeq = 159, // 0x9f
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_if_icmpne = 160, // 0xa0
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_if_icmplt = 161, // 0xa1
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_if_icmpge = 162, // 0xa2
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_if_icmpgt = 163, // 0xa3
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_if_icmple = 164, // 0xa4
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_if_acmpeq = 165, // 0xa5
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_if_acmpne = 166, // 0xa6
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_goto = 167, // 0xa7
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_jsr = 168, // 0xa8
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_ret = 169, // 0xa9
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_tableswitch = 170, // 0xaa
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_lookupswitch = 171, // 0xab
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_ireturn = 172, // 0xac
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_lreturn = 173, // 0xad
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_freturn = 174, // 0xae
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_dreturn = 175, // 0xaf
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_areturn = 176, // 0xb0
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_return = 177, // 0xb1
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_getstatic = 178, // 0xb2
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_putstatic = 179, // 0xb3
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_getfield = 180, // 0xb4
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_putfield = 181, // 0xb5
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_invokevirtual = 182, // 0xb6
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_invokespecial = 183, // 0xb7
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_invokestatic = 184, // 0xb8
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_invokeinterface = 185, // 0xb9
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2009-04-21 23:21:04 -07:00
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_invokedynamic = 186, // 0xba // if EnableInvokeDynamic
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2007-12-01 00:00:00 +00:00
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_new = 187, // 0xbb
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_newarray = 188, // 0xbc
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_anewarray = 189, // 0xbd
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_arraylength = 190, // 0xbe
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_athrow = 191, // 0xbf
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_checkcast = 192, // 0xc0
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_instanceof = 193, // 0xc1
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_monitorenter = 194, // 0xc2
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_monitorexit = 195, // 0xc3
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_wide = 196, // 0xc4
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_multianewarray = 197, // 0xc5
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_ifnull = 198, // 0xc6
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_ifnonnull = 199, // 0xc7
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_goto_w = 200, // 0xc8
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_jsr_w = 201, // 0xc9
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_breakpoint = 202, // 0xca
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number_of_java_codes,
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// JVM bytecodes
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_fast_agetfield = number_of_java_codes,
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_fast_bgetfield ,
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_fast_cgetfield ,
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_fast_dgetfield ,
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_fast_fgetfield ,
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_fast_igetfield ,
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_fast_lgetfield ,
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_fast_sgetfield ,
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_fast_aputfield ,
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_fast_bputfield ,
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_fast_cputfield ,
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_fast_dputfield ,
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_fast_fputfield ,
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_fast_iputfield ,
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_fast_lputfield ,
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_fast_sputfield ,
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_fast_aload_0 ,
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_fast_iaccess_0 ,
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_fast_aaccess_0 ,
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_fast_faccess_0 ,
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_fast_iload ,
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_fast_iload2 ,
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_fast_icaload ,
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_fast_invokevfinal ,
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_fast_linearswitch ,
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_fast_binaryswitch ,
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_return_register_finalizer ,
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_shouldnotreachhere, // For debugging
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// Platform specific JVM bytecodes
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#include "incls/_bytecodes_pd.hpp.incl"
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number_of_codes
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};
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2010-05-23 01:38:26 -07:00
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// Flag bits derived from format strings, can_trap, can_rewrite, etc.:
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enum Flags {
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// semantic flags:
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_bc_can_trap = 1<<0, // bytecode execution can trap or block
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_bc_can_rewrite = 1<<1, // bytecode execution has an alternate form
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// format bits (determined only by the format string):
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_fmt_has_c = 1<<2, // constant, such as sipush "bcc"
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_fmt_has_j = 1<<3, // constant pool cache index, such as getfield "bjj"
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_fmt_has_k = 1<<4, // constant pool index, such as ldc "bk"
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_fmt_has_i = 1<<5, // local index, such as iload
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_fmt_has_o = 1<<6, // offset, such as ifeq
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_fmt_has_nbo = 1<<7, // contains native-order field(s)
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_fmt_has_u2 = 1<<8, // contains double-byte field(s)
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_fmt_has_u4 = 1<<9, // contains quad-byte field
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_fmt_not_variable = 1<<10, // not of variable length (simple or wide)
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_fmt_not_simple = 1<<11, // either wide or variable length
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_all_fmt_bits = (_fmt_not_simple*2 - _fmt_has_c),
|
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|
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|
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|
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// Example derived format syndromes:
|
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|
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_fmt_b = _fmt_not_variable,
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_fmt_bc = _fmt_b | _fmt_has_c,
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_fmt_bi = _fmt_b | _fmt_has_i,
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_fmt_bkk = _fmt_b | _fmt_has_k | _fmt_has_u2,
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_fmt_bJJ = _fmt_b | _fmt_has_j | _fmt_has_u2 | _fmt_has_nbo,
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_fmt_bo2 = _fmt_b | _fmt_has_o | _fmt_has_u2,
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_fmt_bo4 = _fmt_b | _fmt_has_o | _fmt_has_u4
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};
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|
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|
2007-12-01 00:00:00 +00:00
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|
private:
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|
|
static bool _is_initialized;
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|
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static const char* _name [number_of_codes];
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|
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|
static BasicType _result_type [number_of_codes];
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|
|
|
static s_char _depth [number_of_codes];
|
2010-05-23 01:38:26 -07:00
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|
|
static u_char _lengths [number_of_codes];
|
2007-12-01 00:00:00 +00:00
|
|
|
static Code _java_code [number_of_codes];
|
2010-05-23 01:38:26 -07:00
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|
|
static jchar _flags [(1<<BitsPerByte)*2]; // all second page for wide formats
|
2007-12-01 00:00:00 +00:00
|
|
|
|
|
|
|
|
static void def(Code code, const char* name, const char* format, const char* wide_format, BasicType result_type, int depth, bool can_trap);
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|
|
|
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);
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|
|
|
static void pd_initialize(); // platform specific initialization
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|
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|
static Code pd_base_code_for(Code code); // platform specific base_code_for implementation
|
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|
|
public:
|
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|
|
|
// Conversion
|
|
|
|
|
static void check (Code code) { assert(is_defined(code), "illegal code"); }
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|
|
|
static void wide_check (Code code) { assert(wide_is_defined(code), "illegal code"); }
|
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|
|
|
static Code cast (int code) { return (Code)code; }
|
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|
|
|
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|
|
|
|
|
|
|
|
|
// Fetch a bytecode, hiding breakpoints as necessary:
|
|
|
|
|
static Code code_at(address bcp, methodOop method = NULL) {
|
|
|
|
|
Code code = cast(*bcp); return (code != _breakpoint) ? code : non_breakpoint_code_at(bcp, method);
|
|
|
|
|
}
|
|
|
|
|
static Code java_code_at(address bcp, methodOop method = NULL) {
|
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|
|
|
return java_code(code_at(bcp, method));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Fetch a bytecode or a breakpoint:
|
|
|
|
|
static Code code_or_bp_at(address bcp) { return (Code)cast(*bcp); }
|
|
|
|
|
|
|
|
|
|
static Code code_at(methodOop method, int bci);
|
|
|
|
|
static bool is_active_breakpoint_at(address bcp) { return (Code)*bcp == _breakpoint; }
|
|
|
|
|
|
|
|
|
|
// find a bytecode, behind a breakpoint if necessary:
|
|
|
|
|
static Code non_breakpoint_code_at(address bcp, methodOop method = NULL);
|
|
|
|
|
|
|
|
|
|
// Bytecode attributes
|
2010-05-23 01:38:26 -07:00
|
|
|
static bool is_defined (int code) { return 0 <= code && code < number_of_codes && flags(code, false) != 0; }
|
|
|
|
|
static bool wide_is_defined(int code) { return is_defined(code) && flags(code, true) != 0; }
|
2007-12-01 00:00:00 +00:00
|
|
|
static const char* name (Code code) { check(code); return _name [code]; }
|
|
|
|
|
static BasicType result_type (Code code) { check(code); return _result_type [code]; }
|
|
|
|
|
static int depth (Code code) { check(code); return _depth [code]; }
|
2010-05-23 01:38:26 -07:00
|
|
|
static int length_for (Code code) { check(code); return _lengths [code] & 0xF; }
|
|
|
|
|
static int wide_length_for(Code code) { check(code); return _lengths [code] >> 4; }
|
|
|
|
|
static bool can_trap (Code code) { check(code); return has_all_flags(code, _bc_can_trap, false); }
|
2007-12-01 00:00:00 +00:00
|
|
|
static Code java_code (Code code) { check(code); return _java_code [code]; }
|
2010-05-23 01:38:26 -07:00
|
|
|
static bool can_rewrite (Code code) { check(code); return has_all_flags(code, _bc_can_rewrite, false); }
|
|
|
|
|
static bool native_byte_order(Code code) { check(code); return has_all_flags(code, _fmt_has_nbo, false); }
|
|
|
|
|
static bool uses_cp_cache (Code code) { check(code); return has_all_flags(code, _fmt_has_j, false); }
|
2008-10-30 15:48:59 -04:00
|
|
|
// if 'end' is provided, it indicates the end of the code buffer which
|
|
|
|
|
// should not be read past when parsing.
|
|
|
|
|
static int special_length_at(address bcp, address end = NULL);
|
|
|
|
|
static int raw_special_length_at(address bcp, address end = NULL);
|
2007-12-01 00:00:00 +00:00
|
|
|
static int length_at (address bcp) { int l = length_for(code_at(bcp)); return l > 0 ? l : special_length_at(bcp); }
|
|
|
|
|
static int java_length_at (address bcp) { int l = length_for(java_code_at(bcp)); return l > 0 ? l : special_length_at(bcp); }
|
|
|
|
|
static bool is_java_code (Code code) { return 0 <= code && code < number_of_java_codes; }
|
|
|
|
|
|
|
|
|
|
static bool is_aload (Code code) { return (code == _aload || code == _aload_0 || code == _aload_1
|
|
|
|
|
|| code == _aload_2 || code == _aload_3); }
|
|
|
|
|
static bool is_astore (Code code) { return (code == _astore || code == _astore_0 || code == _astore_1
|
|
|
|
|
|| code == _astore_2 || code == _astore_3); }
|
|
|
|
|
|
|
|
|
|
static bool is_zero_const (Code code) { return (code == _aconst_null || code == _iconst_0
|
|
|
|
|
|| code == _fconst_0 || code == _dconst_0); }
|
2010-05-23 01:38:26 -07:00
|
|
|
static int compute_flags (const char* format, int more_flags = 0); // compute the flags
|
|
|
|
|
static int flags (int code, bool is_wide) {
|
|
|
|
|
assert(code == (u_char)code, "must be a byte");
|
|
|
|
|
return _flags[code + (is_wide ? (1<<BitsPerByte) : 0)];
|
|
|
|
|
}
|
|
|
|
|
static int format_bits (Code code, bool is_wide) { return flags(code, is_wide) & _all_fmt_bits; }
|
|
|
|
|
static bool has_all_flags (Code code, int test_flags, bool is_wide) {
|
|
|
|
|
return (flags(code, is_wide) & test_flags) == test_flags;
|
|
|
|
|
}
|
|
|
|
|
|
2007-12-01 00:00:00 +00:00
|
|
|
// Initialization
|
|
|
|
|
static void initialize ();
|
|
|
|
|
};
|
