| 1 | /*
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| 2 | * Copyright (C) 2008, 2009 Apple Inc. All rights reserved.
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| 3 | * Copyright (C) 2008 Cameron Zwarich <[email protected]>
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * 1. Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * 2. Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
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| 15 | * its contributors may be used to endorse or promote products derived
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| 16 | * from this software without specific prior written permission.
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| 17 | *
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| 18 | * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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| 19 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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| 20 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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| 21 | * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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| 22 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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| 23 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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| 24 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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| 25 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 28 | */
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| 29 |
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| 30 | #ifndef Opcode_h
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| 31 | #define Opcode_h
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| 32 |
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| 33 | #include <algorithm>
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| 34 | #include <string.h>
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| 35 |
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| 36 | #include <wtf/Assertions.h>
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| 37 |
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| 38 | namespace JSC {
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| 39 |
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| 40 | #define FOR_EACH_OPCODE_ID(macro) \
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| 41 | macro(op_enter, 1) \
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| 42 | macro(op_enter_with_activation, 2) \
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| 43 | macro(op_init_arguments, 1) \
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| 44 | macro(op_create_arguments, 1) \
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| 45 | macro(op_convert_this, 2) \
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| 46 | \
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| 47 | macro(op_new_object, 2) \
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| 48 | macro(op_new_array, 4) \
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| 49 | macro(op_new_regexp, 3) \
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| 50 | macro(op_mov, 3) \
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| 51 | \
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| 52 | macro(op_not, 3) \
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| 53 | macro(op_eq, 4) \
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| 54 | macro(op_eq_null, 3) \
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| 55 | macro(op_neq, 4) \
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| 56 | macro(op_neq_null, 3) \
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| 57 | macro(op_stricteq, 4) \
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| 58 | macro(op_nstricteq, 4) \
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| 59 | macro(op_less, 4) \
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| 60 | macro(op_lesseq, 4) \
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| 61 | \
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| 62 | macro(op_pre_inc, 2) \
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| 63 | macro(op_pre_dec, 2) \
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| 64 | macro(op_post_inc, 3) \
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| 65 | macro(op_post_dec, 3) \
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| 66 | macro(op_to_jsnumber, 3) \
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| 67 | macro(op_negate, 3) \
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| 68 | macro(op_add, 5) \
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| 69 | macro(op_mul, 5) \
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| 70 | macro(op_div, 5) \
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| 71 | macro(op_mod, 4) \
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| 72 | macro(op_sub, 5) \
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| 73 | \
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| 74 | macro(op_lshift, 4) \
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| 75 | macro(op_rshift, 4) \
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| 76 | macro(op_urshift, 4) \
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| 77 | macro(op_bitand, 5) \
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| 78 | macro(op_bitxor, 5) \
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| 79 | macro(op_bitor, 5) \
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| 80 | macro(op_bitnot, 3) \
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| 81 | \
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| 82 | macro(op_instanceof, 5) \
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| 83 | macro(op_typeof, 3) \
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| 84 | macro(op_is_undefined, 3) \
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| 85 | macro(op_is_boolean, 3) \
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| 86 | macro(op_is_number, 3) \
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| 87 | macro(op_is_string, 3) \
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| 88 | macro(op_is_object, 3) \
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| 89 | macro(op_is_function, 3) \
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| 90 | macro(op_in, 4) \
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| 91 | \
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| 92 | macro(op_resolve, 3) \
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| 93 | macro(op_resolve_skip, 4) \
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| 94 | macro(op_resolve_global, 6) \
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| 95 | macro(op_get_scoped_var, 4) \
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| 96 | macro(op_put_scoped_var, 4) \
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| 97 | macro(op_get_global_var, 4) \
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| 98 | macro(op_put_global_var, 4) \
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| 99 | macro(op_resolve_base, 3) \
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| 100 | macro(op_resolve_with_base, 4) \
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| 101 | macro(op_get_by_id, 8) \
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| 102 | macro(op_get_by_id_self, 8) \
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| 103 | macro(op_get_by_id_self_list, 8) \
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| 104 | macro(op_get_by_id_proto, 8) \
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| 105 | macro(op_get_by_id_proto_list, 8) \
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| 106 | macro(op_get_by_id_chain, 8) \
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| 107 | macro(op_get_by_id_generic, 8) \
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| 108 | macro(op_get_array_length, 8) \
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| 109 | macro(op_get_string_length, 8) \
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| 110 | macro(op_put_by_id, 8) \
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| 111 | macro(op_put_by_id_transition, 8) \
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| 112 | macro(op_put_by_id_replace, 8) \
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| 113 | macro(op_put_by_id_generic, 8) \
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| 114 | macro(op_del_by_id, 4) \
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| 115 | macro(op_get_by_val, 4) \
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| 116 | macro(op_put_by_val, 4) \
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| 117 | macro(op_del_by_val, 4) \
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| 118 | macro(op_put_by_index, 4) \
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| 119 | macro(op_put_getter, 4) \
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| 120 | macro(op_put_setter, 4) \
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| 121 | \
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| 122 | macro(op_jmp, 2) \
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| 123 | macro(op_jtrue, 3) \
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| 124 | macro(op_jfalse, 3) \
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| 125 | macro(op_jeq_null, 3) \
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| 126 | macro(op_jneq_null, 3) \
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| 127 | macro(op_jneq_ptr, 4) \
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| 128 | macro(op_jnless, 4) \
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| 129 | macro(op_jnlesseq, 4) \
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| 130 | macro(op_jmp_scopes, 3) \
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| 131 | macro(op_loop, 2) \
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| 132 | macro(op_loop_if_true, 3) \
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| 133 | macro(op_loop_if_less, 4) \
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| 134 | macro(op_loop_if_lesseq, 4) \
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| 135 | macro(op_switch_imm, 4) \
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| 136 | macro(op_switch_char, 4) \
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| 137 | macro(op_switch_string, 4) \
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| 138 | \
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| 139 | macro(op_new_func, 3) \
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| 140 | macro(op_new_func_exp, 3) \
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| 141 | macro(op_call, 5) \
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| 142 | macro(op_call_eval, 5) \
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| 143 | macro(op_call_varargs, 5) \
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| 144 | macro(op_load_varargs, 3) \
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| 145 | macro(op_tear_off_activation, 2) \
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| 146 | macro(op_tear_off_arguments, 1) \
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| 147 | macro(op_ret, 2) \
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| 148 | macro(op_method_check, 1) \
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| 149 | \
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| 150 | macro(op_construct, 7) \
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| 151 | macro(op_construct_verify, 3) \
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| 152 | macro(op_strcat, 4) \
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| 153 | macro(op_to_primitive, 3) \
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| 154 | \
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| 155 | macro(op_get_pnames, 6) \
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| 156 | macro(op_next_pname, 7) \
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| 157 | \
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| 158 | macro(op_push_scope, 2) \
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| 159 | macro(op_pop_scope, 1) \
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| 160 | macro(op_push_new_scope, 4) \
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| 161 | \
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| 162 | macro(op_catch, 2) \
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| 163 | macro(op_throw, 2) \
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| 164 | macro(op_new_error, 4) \
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| 165 | \
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| 166 | macro(op_jsr, 3) \
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| 167 | macro(op_sret, 2) \
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| 168 | \
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| 169 | macro(op_debug, 4) \
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| 170 | macro(op_profile_will_call, 2) \
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| 171 | macro(op_profile_did_call, 2) \
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| 172 | \
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| 173 | macro(op_end, 2) // end must be the last opcode in the list
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| 174 |
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| 175 | #define OPCODE_ID_ENUM(opcode, length) opcode,
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| 176 | typedef enum { FOR_EACH_OPCODE_ID(OPCODE_ID_ENUM) } OpcodeID;
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| 177 | #undef OPCODE_ID_ENUM
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| 178 |
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| 179 | const int numOpcodeIDs = op_end + 1;
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| 180 |
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| 181 | #define OPCODE_ID_LENGTHS(id, length) const int id##_length = length;
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| 182 | FOR_EACH_OPCODE_ID(OPCODE_ID_LENGTHS);
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| 183 | #undef OPCODE_ID_LENGTHS
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| 184 |
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| 185 | #define OPCODE_LENGTH(opcode) opcode##_length
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| 186 |
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| 187 | #define OPCODE_ID_LENGTH_MAP(opcode, length) length,
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| 188 | const int opcodeLengths[numOpcodeIDs] = { FOR_EACH_OPCODE_ID(OPCODE_ID_LENGTH_MAP) };
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| 189 | #undef OPCODE_ID_LENGTH_MAP
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| 190 |
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| 191 | #define VERIFY_OPCODE_ID(id, size) COMPILE_ASSERT(id <= op_end, ASSERT_THAT_JS_OPCODE_IDS_ARE_VALID);
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| 192 | FOR_EACH_OPCODE_ID(VERIFY_OPCODE_ID);
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| 193 | #undef VERIFY_OPCODE_ID
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| 194 |
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| 195 | #if HAVE(COMPUTED_GOTO)
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| 196 | typedef void* Opcode;
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| 197 | #else
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| 198 | typedef OpcodeID Opcode;
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| 199 | #endif
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| 200 |
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| 201 | #if ENABLE(OPCODE_SAMPLING) || ENABLE(CODEBLOCK_SAMPLING) || ENABLE(OPCODE_STATS)
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| 202 |
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| 203 | #define PADDING_STRING " "
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| 204 | #define PADDING_STRING_LENGTH static_cast<unsigned>(strlen(PADDING_STRING))
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| 205 |
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| 206 | extern const char* const opcodeNames[];
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| 207 |
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| 208 | inline const char* padOpcodeName(OpcodeID op, unsigned width)
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| 209 | {
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| 210 | unsigned pad = width - strlen(opcodeNames[op]);
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| 211 | pad = std::min(pad, PADDING_STRING_LENGTH);
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| 212 | return PADDING_STRING + PADDING_STRING_LENGTH - pad;
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| 213 | }
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| 214 |
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| 215 | #undef PADDING_STRING_LENGTH
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| 216 | #undef PADDING_STRING
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| 217 |
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| 218 | #endif
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| 219 |
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| 220 | #if ENABLE(OPCODE_STATS)
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| 221 |
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| 222 | struct OpcodeStats {
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| 223 | OpcodeStats();
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| 224 | ~OpcodeStats();
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| 225 | static long long opcodeCounts[numOpcodeIDs];
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| 226 | static long long opcodePairCounts[numOpcodeIDs][numOpcodeIDs];
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| 227 | static int lastOpcode;
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| 228 |
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| 229 | static void recordInstruction(int opcode);
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| 230 | static void resetLastInstruction();
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| 231 | };
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| 232 |
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| 233 | #endif
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| 234 |
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| 235 | } // namespace JSC
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| 236 |
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| 237 | #endif // Opcode_h
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