1/*
2 * Copyright (C) 2008, 2009 Apple Inc. All rights reserved.
3 * Copyright (C) 2008 Cameron Zwarich <cwzwarich@uwaterloo.ca>
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
15 * its contributors may be used to endorse or promote products derived
16 * from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#ifndef Opcode_h
31#define Opcode_h
32
33#include <algorithm>
34#include <string.h>
35
36#include <wtf/Assertions.h>
37
38namespace JSC {
39
40 #define FOR_EACH_OPCODE_ID(macro) \
41 macro(op_enter, 1) \
42 macro(op_enter_with_activation, 2) \
43 macro(op_init_arguments, 1) \
44 macro(op_create_arguments, 1) \
45 macro(op_convert_this, 2) \
46 \
47 macro(op_new_object, 2) \
48 macro(op_new_array, 4) \
49 macro(op_new_regexp, 3) \
50 macro(op_mov, 3) \
51 \
52 macro(op_not, 3) \
53 macro(op_eq, 4) \
54 macro(op_eq_null, 3) \
55 macro(op_neq, 4) \
56 macro(op_neq_null, 3) \
57 macro(op_stricteq, 4) \
58 macro(op_nstricteq, 4) \
59 macro(op_less, 4) \
60 macro(op_lesseq, 4) \
61 \
62 macro(op_pre_inc, 2) \
63 macro(op_pre_dec, 2) \
64 macro(op_post_inc, 3) \
65 macro(op_post_dec, 3) \
66 macro(op_to_jsnumber, 3) \
67 macro(op_negate, 3) \
68 macro(op_add, 5) \
69 macro(op_mul, 5) \
70 macro(op_div, 5) \
71 macro(op_mod, 4) \
72 macro(op_sub, 5) \
73 \
74 macro(op_lshift, 4) \
75 macro(op_rshift, 4) \
76 macro(op_urshift, 4) \
77 macro(op_bitand, 5) \
78 macro(op_bitxor, 5) \
79 macro(op_bitor, 5) \
80 macro(op_bitnot, 3) \
81 \
82 macro(op_instanceof, 5) \
83 macro(op_typeof, 3) \
84 macro(op_is_undefined, 3) \
85 macro(op_is_boolean, 3) \
86 macro(op_is_number, 3) \
87 macro(op_is_string, 3) \
88 macro(op_is_object, 3) \
89 macro(op_is_function, 3) \
90 macro(op_in, 4) \
91 \
92 macro(op_resolve, 3) \
93 macro(op_resolve_skip, 4) \
94 macro(op_resolve_global, 6) \
95 macro(op_get_scoped_var, 4) \
96 macro(op_put_scoped_var, 4) \
97 macro(op_get_global_var, 4) \
98 macro(op_put_global_var, 4) \
99 macro(op_resolve_base, 3) \
100 macro(op_resolve_with_base, 4) \
101 macro(op_get_by_id, 8) \
102 macro(op_get_by_id_self, 8) \
103 macro(op_get_by_id_self_list, 8) \
104 macro(op_get_by_id_proto, 8) \
105 macro(op_get_by_id_proto_list, 8) \
106 macro(op_get_by_id_chain, 8) \
107 macro(op_get_by_id_generic, 8) \
108 macro(op_get_array_length, 8) \
109 macro(op_get_string_length, 8) \
110 macro(op_put_by_id, 8) \
111 macro(op_put_by_id_transition, 8) \
112 macro(op_put_by_id_replace, 8) \
113 macro(op_put_by_id_generic, 8) \
114 macro(op_del_by_id, 4) \
115 macro(op_get_by_val, 4) \
116 macro(op_get_by_pname, 7) \
117 macro(op_put_by_val, 4) \
118 macro(op_del_by_val, 4) \
119 macro(op_put_by_index, 4) \
120 macro(op_put_getter, 4) \
121 macro(op_put_setter, 4) \
122 \
123 macro(op_jmp, 2) \
124 macro(op_jtrue, 3) \
125 macro(op_jfalse, 3) \
126 macro(op_jeq_null, 3) \
127 macro(op_jneq_null, 3) \
128 macro(op_jneq_ptr, 4) \
129 macro(op_jnless, 4) \
130 macro(op_jnlesseq, 4) \
131 macro(op_jless, 4) \
132 macro(op_jmp_scopes, 3) \
133 macro(op_loop, 2) \
134 macro(op_loop_if_true, 3) \
135 macro(op_loop_if_false, 3) \
136 macro(op_loop_if_less, 4) \
137 macro(op_loop_if_lesseq, 4) \
138 macro(op_switch_imm, 4) \
139 macro(op_switch_char, 4) \
140 macro(op_switch_string, 4) \
141 \
142 macro(op_new_func, 3) \
143 macro(op_new_func_exp, 3) \
144 macro(op_call, 5) \
145 macro(op_call_eval, 5) \
146 macro(op_call_varargs, 5) \
147 macro(op_load_varargs, 3) \
148 macro(op_tear_off_activation, 2) \
149 macro(op_tear_off_arguments, 1) \
150 macro(op_ret, 2) \
151 macro(op_method_check, 1) \
152 \
153 macro(op_construct, 7) \
154 macro(op_construct_verify, 3) \
155 macro(op_strcat, 4) \
156 macro(op_to_primitive, 3) \
157 \
158 macro(op_get_pnames, 6) \
159 macro(op_next_pname, 7) \
160 \
161 macro(op_push_scope, 2) \
162 macro(op_pop_scope, 1) \
163 macro(op_push_new_scope, 4) \
164 \
165 macro(op_catch, 2) \
166 macro(op_throw, 2) \
167 macro(op_new_error, 4) \
168 \
169 macro(op_jsr, 3) \
170 macro(op_sret, 2) \
171 \
172 macro(op_debug, 4) \
173 macro(op_profile_will_call, 2) \
174 macro(op_profile_did_call, 2) \
175 \
176 macro(op_end, 2) // end must be the last opcode in the list
177
178 #define OPCODE_ID_ENUM(opcode, length) opcode,
179 typedef enum { FOR_EACH_OPCODE_ID(OPCODE_ID_ENUM) } OpcodeID;
180 #undef OPCODE_ID_ENUM
181
182 const int numOpcodeIDs = op_end + 1;
183
184 #define OPCODE_ID_LENGTHS(id, length) const int id##_length = length;
185 FOR_EACH_OPCODE_ID(OPCODE_ID_LENGTHS);
186 #undef OPCODE_ID_LENGTHS
187
188 #define OPCODE_LENGTH(opcode) opcode##_length
189
190 #define OPCODE_ID_LENGTH_MAP(opcode, length) length,
191 const int opcodeLengths[numOpcodeIDs] = { FOR_EACH_OPCODE_ID(OPCODE_ID_LENGTH_MAP) };
192 #undef OPCODE_ID_LENGTH_MAP
193
194 #define VERIFY_OPCODE_ID(id, size) COMPILE_ASSERT(id <= op_end, ASSERT_THAT_JS_OPCODE_IDS_ARE_VALID);
195 FOR_EACH_OPCODE_ID(VERIFY_OPCODE_ID);
196 #undef VERIFY_OPCODE_ID
197
198#if HAVE(COMPUTED_GOTO)
199#if COMPILER(RVCT) || COMPILER(INTEL)
200 typedef void* Opcode;
201#else
202 typedef const void* Opcode;
203#endif
204#else
205 typedef OpcodeID Opcode;
206#endif
207
208#if ENABLE(OPCODE_SAMPLING) || ENABLE(CODEBLOCK_SAMPLING) || ENABLE(OPCODE_STATS)
209
210#define PADDING_STRING " "
211#define PADDING_STRING_LENGTH static_cast<unsigned>(strlen(PADDING_STRING))
212
213 extern const char* const opcodeNames[];
214
215 inline const char* padOpcodeName(OpcodeID op, unsigned width)
216 {
217 unsigned pad = width - strlen(opcodeNames[op]);
218 pad = std::min(pad, PADDING_STRING_LENGTH);
219 return PADDING_STRING + PADDING_STRING_LENGTH - pad;
220 }
221
222#undef PADDING_STRING_LENGTH
223#undef PADDING_STRING
224
225#endif
226
227#if ENABLE(OPCODE_STATS)
228
229 struct OpcodeStats {
230 OpcodeStats();
231 ~OpcodeStats();
232 static long long opcodeCounts[numOpcodeIDs];
233 static long long opcodePairCounts[numOpcodeIDs][numOpcodeIDs];
234 static int lastOpcode;
235
236 static void recordInstruction(int opcode);
237 static void resetLastInstruction();
238 };
239
240#endif
241
242} // namespace JSC
243
244#endif // Opcode_h
245

source code of qtscript/src/3rdparty/javascriptcore/JavaScriptCore/bytecode/Opcode.h