| /* |
| * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef SHARE_VM_INTERPRETER_BYTECODES_HPP |
| #define SHARE_VM_INTERPRETER_BYTECODES_HPP |
| |
| #include "memory/allocation.hpp" |
| #include "utilities/top.hpp" |
| |
| // Bytecodes specifies all bytecodes used in the VM and |
| // provides utility functions to get bytecode attributes. |
| |
| // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/interpreter/Bytecodes.java |
| class Bytecodes: AllStatic { |
| public: |
| enum Code { |
| _illegal = -1, |
| |
| // Java bytecodes |
| _nop = 0, // 0x00 |
| _aconst_null = 1, // 0x01 |
| _iconst_m1 = 2, // 0x02 |
| _iconst_0 = 3, // 0x03 |
| _iconst_1 = 4, // 0x04 |
| _iconst_2 = 5, // 0x05 |
| _iconst_3 = 6, // 0x06 |
| _iconst_4 = 7, // 0x07 |
| _iconst_5 = 8, // 0x08 |
| _lconst_0 = 9, // 0x09 |
| _lconst_1 = 10, // 0x0a |
| _fconst_0 = 11, // 0x0b |
| _fconst_1 = 12, // 0x0c |
| _fconst_2 = 13, // 0x0d |
| _dconst_0 = 14, // 0x0e |
| _dconst_1 = 15, // 0x0f |
| _bipush = 16, // 0x10 |
| _sipush = 17, // 0x11 |
| _ldc = 18, // 0x12 |
| _ldc_w = 19, // 0x13 |
| _ldc2_w = 20, // 0x14 |
| _iload = 21, // 0x15 |
| _lload = 22, // 0x16 |
| _fload = 23, // 0x17 |
| _dload = 24, // 0x18 |
| _aload = 25, // 0x19 |
| _iload_0 = 26, // 0x1a |
| _iload_1 = 27, // 0x1b |
| _iload_2 = 28, // 0x1c |
| _iload_3 = 29, // 0x1d |
| _lload_0 = 30, // 0x1e |
| _lload_1 = 31, // 0x1f |
| _lload_2 = 32, // 0x20 |
| _lload_3 = 33, // 0x21 |
| _fload_0 = 34, // 0x22 |
| _fload_1 = 35, // 0x23 |
| _fload_2 = 36, // 0x24 |
| _fload_3 = 37, // 0x25 |
| _dload_0 = 38, // 0x26 |
| _dload_1 = 39, // 0x27 |
| _dload_2 = 40, // 0x28 |
| _dload_3 = 41, // 0x29 |
| _aload_0 = 42, // 0x2a |
| _aload_1 = 43, // 0x2b |
| _aload_2 = 44, // 0x2c |
| _aload_3 = 45, // 0x2d |
| _iaload = 46, // 0x2e |
| _laload = 47, // 0x2f |
| _faload = 48, // 0x30 |
| _daload = 49, // 0x31 |
| _aaload = 50, // 0x32 |
| _baload = 51, // 0x33 |
| _caload = 52, // 0x34 |
| _saload = 53, // 0x35 |
| _istore = 54, // 0x36 |
| _lstore = 55, // 0x37 |
| _fstore = 56, // 0x38 |
| _dstore = 57, // 0x39 |
| _astore = 58, // 0x3a |
| _istore_0 = 59, // 0x3b |
| _istore_1 = 60, // 0x3c |
| _istore_2 = 61, // 0x3d |
| _istore_3 = 62, // 0x3e |
| _lstore_0 = 63, // 0x3f |
| _lstore_1 = 64, // 0x40 |
| _lstore_2 = 65, // 0x41 |
| _lstore_3 = 66, // 0x42 |
| _fstore_0 = 67, // 0x43 |
| _fstore_1 = 68, // 0x44 |
| _fstore_2 = 69, // 0x45 |
| _fstore_3 = 70, // 0x46 |
| _dstore_0 = 71, // 0x47 |
| _dstore_1 = 72, // 0x48 |
| _dstore_2 = 73, // 0x49 |
| _dstore_3 = 74, // 0x4a |
| _astore_0 = 75, // 0x4b |
| _astore_1 = 76, // 0x4c |
| _astore_2 = 77, // 0x4d |
| _astore_3 = 78, // 0x4e |
| _iastore = 79, // 0x4f |
| _lastore = 80, // 0x50 |
| _fastore = 81, // 0x51 |
| _dastore = 82, // 0x52 |
| _aastore = 83, // 0x53 |
| _bastore = 84, // 0x54 |
| _castore = 85, // 0x55 |
| _sastore = 86, // 0x56 |
| _pop = 87, // 0x57 |
| _pop2 = 88, // 0x58 |
| _dup = 89, // 0x59 |
| _dup_x1 = 90, // 0x5a |
| _dup_x2 = 91, // 0x5b |
| _dup2 = 92, // 0x5c |
| _dup2_x1 = 93, // 0x5d |
| _dup2_x2 = 94, // 0x5e |
| _swap = 95, // 0x5f |
| _iadd = 96, // 0x60 |
| _ladd = 97, // 0x61 |
| _fadd = 98, // 0x62 |
| _dadd = 99, // 0x63 |
| _isub = 100, // 0x64 |
| _lsub = 101, // 0x65 |
| _fsub = 102, // 0x66 |
| _dsub = 103, // 0x67 |
| _imul = 104, // 0x68 |
| _lmul = 105, // 0x69 |
| _fmul = 106, // 0x6a |
| _dmul = 107, // 0x6b |
| _idiv = 108, // 0x6c |
| _ldiv = 109, // 0x6d |
| _fdiv = 110, // 0x6e |
| _ddiv = 111, // 0x6f |
| _irem = 112, // 0x70 |
| _lrem = 113, // 0x71 |
| _frem = 114, // 0x72 |
| _drem = 115, // 0x73 |
| _ineg = 116, // 0x74 |
| _lneg = 117, // 0x75 |
| _fneg = 118, // 0x76 |
| _dneg = 119, // 0x77 |
| _ishl = 120, // 0x78 |
| _lshl = 121, // 0x79 |
| _ishr = 122, // 0x7a |
| _lshr = 123, // 0x7b |
| _iushr = 124, // 0x7c |
| _lushr = 125, // 0x7d |
| _iand = 126, // 0x7e |
| _land = 127, // 0x7f |
| _ior = 128, // 0x80 |
| _lor = 129, // 0x81 |
| _ixor = 130, // 0x82 |
| _lxor = 131, // 0x83 |
| _iinc = 132, // 0x84 |
| _i2l = 133, // 0x85 |
| _i2f = 134, // 0x86 |
| _i2d = 135, // 0x87 |
| _l2i = 136, // 0x88 |
| _l2f = 137, // 0x89 |
| _l2d = 138, // 0x8a |
| _f2i = 139, // 0x8b |
| _f2l = 140, // 0x8c |
| _f2d = 141, // 0x8d |
| _d2i = 142, // 0x8e |
| _d2l = 143, // 0x8f |
| _d2f = 144, // 0x90 |
| _i2b = 145, // 0x91 |
| _i2c = 146, // 0x92 |
| _i2s = 147, // 0x93 |
| _lcmp = 148, // 0x94 |
| _fcmpl = 149, // 0x95 |
| _fcmpg = 150, // 0x96 |
| _dcmpl = 151, // 0x97 |
| _dcmpg = 152, // 0x98 |
| _ifeq = 153, // 0x99 |
| _ifne = 154, // 0x9a |
| _iflt = 155, // 0x9b |
| _ifge = 156, // 0x9c |
| _ifgt = 157, // 0x9d |
| _ifle = 158, // 0x9e |
| _if_icmpeq = 159, // 0x9f |
| _if_icmpne = 160, // 0xa0 |
| _if_icmplt = 161, // 0xa1 |
| _if_icmpge = 162, // 0xa2 |
| _if_icmpgt = 163, // 0xa3 |
| _if_icmple = 164, // 0xa4 |
| _if_acmpeq = 165, // 0xa5 |
| _if_acmpne = 166, // 0xa6 |
| _goto = 167, // 0xa7 |
| _jsr = 168, // 0xa8 |
| _ret = 169, // 0xa9 |
| _tableswitch = 170, // 0xaa |
| _lookupswitch = 171, // 0xab |
| _ireturn = 172, // 0xac |
| _lreturn = 173, // 0xad |
| _freturn = 174, // 0xae |
| _dreturn = 175, // 0xaf |
| _areturn = 176, // 0xb0 |
| _return = 177, // 0xb1 |
| _getstatic = 178, // 0xb2 |
| _putstatic = 179, // 0xb3 |
| _getfield = 180, // 0xb4 |
| _putfield = 181, // 0xb5 |
| _invokevirtual = 182, // 0xb6 |
| _invokespecial = 183, // 0xb7 |
| _invokestatic = 184, // 0xb8 |
| _invokeinterface = 185, // 0xb9 |
| _invokedynamic = 186, // 0xba // if EnableInvokeDynamic |
| _new = 187, // 0xbb |
| _newarray = 188, // 0xbc |
| _anewarray = 189, // 0xbd |
| _arraylength = 190, // 0xbe |
| _athrow = 191, // 0xbf |
| _checkcast = 192, // 0xc0 |
| _instanceof = 193, // 0xc1 |
| _monitorenter = 194, // 0xc2 |
| _monitorexit = 195, // 0xc3 |
| _wide = 196, // 0xc4 |
| _multianewarray = 197, // 0xc5 |
| _ifnull = 198, // 0xc6 |
| _ifnonnull = 199, // 0xc7 |
| _goto_w = 200, // 0xc8 |
| _jsr_w = 201, // 0xc9 |
| _breakpoint = 202, // 0xca |
| |
| number_of_java_codes, |
| |
| // JVM bytecodes |
| _fast_agetfield = number_of_java_codes, |
| _fast_bgetfield , |
| _fast_cgetfield , |
| _fast_dgetfield , |
| _fast_fgetfield , |
| _fast_igetfield , |
| _fast_lgetfield , |
| _fast_sgetfield , |
| |
| _fast_aputfield , |
| _fast_bputfield , |
| _fast_zputfield , |
| _fast_cputfield , |
| _fast_dputfield , |
| _fast_fputfield , |
| _fast_iputfield , |
| _fast_lputfield , |
| _fast_sputfield , |
| |
| _fast_aload_0 , |
| _fast_iaccess_0 , |
| _fast_aaccess_0 , |
| _fast_faccess_0 , |
| |
| _fast_iload , |
| _fast_iload2 , |
| _fast_icaload , |
| |
| _fast_invokevfinal , |
| _fast_linearswitch , |
| _fast_binaryswitch , |
| |
| // special handling of oop constants: |
| _fast_aldc , |
| _fast_aldc_w , |
| |
| _return_register_finalizer , |
| |
| // special handling of signature-polymorphic methods: |
| _invokehandle , |
| |
| _shouldnotreachhere, // For debugging |
| |
| // Platform specific JVM bytecodes |
| #ifdef TARGET_ARCH_x86 |
| # include "bytecodes_x86.hpp" |
| #endif |
| #ifdef TARGET_ARCH_sparc |
| # include "bytecodes_sparc.hpp" |
| #endif |
| #ifdef TARGET_ARCH_zero |
| # include "bytecodes_zero.hpp" |
| #endif |
| #ifdef TARGET_ARCH_arm |
| # include "bytecodes_arm.hpp" |
| #endif |
| #ifdef TARGET_ARCH_ppc |
| # include "bytecodes_ppc.hpp" |
| #endif |
| |
| |
| number_of_codes |
| }; |
| |
| // Flag bits derived from format strings, can_trap, can_rewrite, etc.: |
| enum Flags { |
| // semantic flags: |
| _bc_can_trap = 1<<0, // bytecode execution can trap or block |
| _bc_can_rewrite = 1<<1, // bytecode execution has an alternate form |
| |
| // format bits (determined only by the format string): |
| _fmt_has_c = 1<<2, // constant, such as sipush "bcc" |
| _fmt_has_j = 1<<3, // constant pool cache index, such as getfield "bjj" |
| _fmt_has_k = 1<<4, // constant pool index, such as ldc "bk" |
| _fmt_has_i = 1<<5, // local index, such as iload |
| _fmt_has_o = 1<<6, // offset, such as ifeq |
| _fmt_has_nbo = 1<<7, // contains native-order field(s) |
| _fmt_has_u2 = 1<<8, // contains double-byte field(s) |
| _fmt_has_u4 = 1<<9, // contains quad-byte field |
| _fmt_not_variable = 1<<10, // not of variable length (simple or wide) |
| _fmt_not_simple = 1<<11, // either wide or variable length |
| _all_fmt_bits = (_fmt_not_simple*2 - _fmt_has_c), |
| |
| // Example derived format syndromes: |
| _fmt_b = _fmt_not_variable, |
| _fmt_bc = _fmt_b | _fmt_has_c, |
| _fmt_bi = _fmt_b | _fmt_has_i, |
| _fmt_bkk = _fmt_b | _fmt_has_k | _fmt_has_u2, |
| _fmt_bJJ = _fmt_b | _fmt_has_j | _fmt_has_u2 | _fmt_has_nbo, |
| _fmt_bo2 = _fmt_b | _fmt_has_o | _fmt_has_u2, |
| _fmt_bo4 = _fmt_b | _fmt_has_o | _fmt_has_u4 |
| }; |
| |
| private: |
| static bool _is_initialized; |
| static const char* _name [number_of_codes]; |
| static BasicType _result_type [number_of_codes]; |
| static s_char _depth [number_of_codes]; |
| static u_char _lengths [number_of_codes]; |
| static Code _java_code [number_of_codes]; |
| static jchar _flags [(1<<BitsPerByte)*2]; // all second page for wide formats |
| |
| static void def(Code code, const char* name, const char* format, const char* wide_format, BasicType result_type, int depth, bool can_trap); |
| 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); |
| static void pd_initialize(); // platform specific initialization |
| static Code pd_base_code_for(Code code); // platform specific base_code_for implementation |
| |
| // Verify that bcp points into method |
| #ifdef ASSERT |
| static bool check_method(const Method* method, address bcp); |
| #endif |
| static bool check_must_rewrite(Bytecodes::Code bc); |
| |
| public: |
| // Conversion |
| static void check (Code code) { assert(is_defined(code), err_msg("illegal code: %d", (int)code)); } |
| static void wide_check (Code code) { assert(wide_is_defined(code), err_msg("illegal code: %d", (int)code)); } |
| static Code cast (int code) { return (Code)code; } |
| |
| |
| // Fetch a bytecode, hiding breakpoints as necessary. The method |
| // argument is used for conversion of breakpoints into the original |
| // bytecode. The CI uses these methods but guarantees that |
| // breakpoints are hidden so the method argument should be passed as |
| // NULL since in that case the bcp and Method* are unrelated |
| // memory. |
| static Code code_at(const Method* method, address bcp) { |
| assert(method == NULL || check_method(method, bcp), "bcp must point into method"); |
| Code code = cast(*bcp); |
| assert(code != _breakpoint || method != NULL, "need Method* to decode breakpoint"); |
| return (code != _breakpoint) ? code : non_breakpoint_code_at(method, bcp); |
| } |
| static Code java_code_at(const Method* method, address bcp) { |
| return java_code(code_at(method, bcp)); |
| } |
| |
| // Fetch a bytecode or a breakpoint: |
| static Code code_or_bp_at(address bcp) { return (Code)cast(*bcp); } |
| |
| static Code code_at(Method* 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(const Method* method, address bcp); |
| |
| // Bytecode attributes |
| 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; } |
| 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]; } |
| // Note: Length functions must return <=0 for invalid bytecodes. |
| // Calling check(code) in length functions would throw an unwanted assert. |
| static int length_for (Code code) { /*no check*/ return _lengths [code] & 0xF; } |
| static int wide_length_for(Code code) { /*no check*/ return _lengths [code] >> 4; } |
| static bool can_trap (Code code) { check(code); return has_all_flags(code, _bc_can_trap, false); } |
| static Code java_code (Code code) { check(code); return _java_code [code]; } |
| static bool can_rewrite (Code code) { check(code); return has_all_flags(code, _bc_can_rewrite, false); } |
| static bool must_rewrite(Bytecodes::Code code) { return can_rewrite(code) && check_must_rewrite(code); } |
| 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); } |
| // 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(Bytecodes::Code code, address bcp, address end = NULL); |
| static int special_length_at(Method* method, address bcp, address end = NULL) { return special_length_at(code_at(method, bcp), bcp, end); } |
| static int raw_special_length_at(address bcp, address end = NULL); |
| 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); } |
| static int length_at (Method* method, address bcp) { return length_for_code_at(code_at(method, bcp), bcp); } |
| static int java_length_at (Method* method, address bcp) { return length_for_code_at(java_code_at(method, bcp), 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_store_into_local(Code code){ return (_istore <= code && code <= _astore_3); } |
| static bool is_const (Code code) { return (_aconst_null <= code && code <= _ldc2_w); } |
| static bool is_zero_const (Code code) { return (code == _aconst_null || code == _iconst_0 |
| || code == _fconst_0 || code == _dconst_0); } |
| static bool is_return (Code code) { return (_ireturn <= code && code <= _return); } |
| static bool is_invoke (Code code) { return (_invokevirtual <= code && code <= _invokedynamic); } |
| static bool has_receiver (Code code) { assert(is_invoke(code), ""); return code == _invokevirtual || |
| code == _invokespecial || |
| code == _invokeinterface; } |
| static bool has_optional_appendix(Code code) { return code == _invokedynamic || code == _invokehandle; } |
| |
| 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; |
| } |
| |
| // Initialization |
| static void initialize (); |
| }; |
| |
| #endif // SHARE_VM_INTERPRETER_BYTECODES_HPP |
