Mercurial > hg > truffle
annotate src/share/vm/interpreter/bytecode.hpp @ 4138:82af018d61db
Merge fixes.
| author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
|---|---|
| date | Sat, 17 Dec 2011 22:03:44 +0100 |
| parents | e342a5110bed |
| children | 1d7922586cf6 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2142 | 2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_INTERPRETER_BYTECODE_HPP |
| 26 #define SHARE_VM_INTERPRETER_BYTECODE_HPP | |
| 27 | |
| 28 #include "interpreter/bytecodes.hpp" | |
| 29 #include "memory/allocation.hpp" | |
| 30 #include "oops/methodOop.hpp" | |
| 31 #ifdef TARGET_ARCH_x86 | |
| 32 # include "bytes_x86.hpp" | |
| 33 #endif | |
| 34 #ifdef TARGET_ARCH_sparc | |
| 35 # include "bytes_sparc.hpp" | |
| 36 #endif | |
| 37 #ifdef TARGET_ARCH_zero | |
| 38 # include "bytes_zero.hpp" | |
| 39 #endif | |
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40 #ifdef TARGET_ARCH_arm |
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41 # include "bytes_arm.hpp" |
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42 #endif |
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43 #ifdef TARGET_ARCH_ppc |
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44 # include "bytes_ppc.hpp" |
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45 #endif |
| 1972 | 46 |
| 2142 | 47 class ciBytecodeStream; |
| 48 | |
| 49 // The base class for different kinds of bytecode abstractions. | |
| 50 // Provides the primitive operations to manipulate code relative | |
| 51 // to the bcp. | |
| 0 | 52 |
| 2142 | 53 class Bytecode: public StackObj { |
| 54 protected: | |
| 55 const address _bcp; | |
| 56 const Bytecodes::Code _code; | |
| 57 | |
| 0 | 58 // Address computation |
| 2142 | 59 address addr_at (int offset) const { return (address)_bcp + offset; } |
| 60 u_char byte_at(int offset) const { return *addr_at(offset); } | |
| 0 | 61 address aligned_addr_at (int offset) const { return (address)round_to((intptr_t)addr_at(offset), jintSize); } |
| 62 int aligned_offset (int offset) const { return aligned_addr_at(offset) - addr_at(0); } | |
| 63 | |
| 1565 | 64 // Word access: |
| 65 int get_Java_u2_at (int offset) const { return Bytes::get_Java_u2(addr_at(offset)); } | |
| 66 int get_Java_u4_at (int offset) const { return Bytes::get_Java_u4(addr_at(offset)); } | |
| 67 int get_native_u2_at (int offset) const { return Bytes::get_native_u2(addr_at(offset)); } | |
| 68 int get_native_u4_at (int offset) const { return Bytes::get_native_u4(addr_at(offset)); } | |
| 0 | 69 |
| 70 public: | |
| 2142 | 71 Bytecode(methodOop method, address bcp): _bcp(bcp), _code(Bytecodes::code_at(method, addr_at(0))) { |
| 72 assert(method != NULL, "this form requires a valid methodOop"); | |
| 73 } | |
| 74 // Defined in ciStreams.hpp | |
| 75 inline Bytecode(const ciBytecodeStream* stream, address bcp = NULL); | |
| 0 | 76 |
| 2142 | 77 // Attributes |
| 78 address bcp() const { return _bcp; } | |
| 79 int instruction_size() const { return Bytecodes::length_for_code_at(_code, bcp()); } | |
| 80 | |
| 81 Bytecodes::Code code() const { return _code; } | |
| 0 | 82 Bytecodes::Code java_code() const { return Bytecodes::java_code(code()); } |
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83 |
| 1565 | 84 // Static functions for parsing bytecodes in place. |
| 85 int get_index_u1(Bytecodes::Code bc) const { | |
| 86 assert_same_format_as(bc); assert_index_size(1, bc); | |
| 87 return *(jubyte*)addr_at(1); | |
| 88 } | |
| 89 int get_index_u2(Bytecodes::Code bc, bool is_wide = false) const { | |
| 90 assert_same_format_as(bc, is_wide); assert_index_size(2, bc, is_wide); | |
| 91 address p = addr_at(is_wide ? 2 : 1); | |
| 92 if (can_use_native_byte_order(bc, is_wide)) | |
| 2142 | 93 return Bytes::get_native_u2(p); |
| 1565 | 94 else return Bytes::get_Java_u2(p); |
| 95 } | |
| 1602 | 96 int get_index_u1_cpcache(Bytecodes::Code bc) const { |
| 97 assert_same_format_as(bc); assert_index_size(1, bc); | |
| 98 return *(jubyte*)addr_at(1) + constantPoolOopDesc::CPCACHE_INDEX_TAG; | |
| 99 } | |
| 1565 | 100 int get_index_u2_cpcache(Bytecodes::Code bc) const { |
| 101 assert_same_format_as(bc); assert_index_size(2, bc); assert_native_index(bc); | |
| 1602 | 102 return Bytes::get_native_u2(addr_at(1)) + constantPoolOopDesc::CPCACHE_INDEX_TAG; |
| 1565 | 103 } |
| 104 int get_index_u4(Bytecodes::Code bc) const { | |
| 105 assert_same_format_as(bc); assert_index_size(4, bc); | |
| 106 assert(can_use_native_byte_order(bc), ""); | |
| 107 return Bytes::get_native_u4(addr_at(1)); | |
| 108 } | |
| 109 bool has_index_u4(Bytecodes::Code bc) const { | |
| 110 return bc == Bytecodes::_invokedynamic; | |
| 111 } | |
| 112 | |
| 113 int get_offset_s2(Bytecodes::Code bc) const { | |
| 114 assert_same_format_as(bc); assert_offset_size(2, bc); | |
| 115 return (jshort) Bytes::get_Java_u2(addr_at(1)); | |
| 116 } | |
| 117 int get_offset_s4(Bytecodes::Code bc) const { | |
| 118 assert_same_format_as(bc); assert_offset_size(4, bc); | |
| 119 return (jint) Bytes::get_Java_u4(addr_at(1)); | |
| 120 } | |
| 121 | |
| 122 int get_constant_u1(int offset, Bytecodes::Code bc) const { | |
| 123 assert_same_format_as(bc); assert_constant_size(1, offset, bc); | |
| 124 return *(jbyte*)addr_at(offset); | |
| 125 } | |
| 126 int get_constant_u2(int offset, Bytecodes::Code bc, bool is_wide = false) const { | |
| 127 assert_same_format_as(bc, is_wide); assert_constant_size(2, offset, bc, is_wide); | |
| 128 return (jshort) Bytes::get_Java_u2(addr_at(offset)); | |
| 129 } | |
| 130 | |
| 131 // These are used locally and also from bytecode streams. | |
| 132 void assert_same_format_as(Bytecodes::Code testbc, bool is_wide = false) const NOT_DEBUG_RETURN; | |
| 133 static void assert_index_size(int required_size, Bytecodes::Code bc, bool is_wide = false) NOT_DEBUG_RETURN; | |
| 134 static void assert_offset_size(int required_size, Bytecodes::Code bc, bool is_wide = false) NOT_DEBUG_RETURN; | |
| 135 static void assert_constant_size(int required_size, int where, Bytecodes::Code bc, bool is_wide = false) NOT_DEBUG_RETURN; | |
| 136 static void assert_native_index(Bytecodes::Code bc, bool is_wide = false) NOT_DEBUG_RETURN; | |
| 137 static bool can_use_native_byte_order(Bytecodes::Code bc, bool is_wide = false) { | |
| 138 return (!Bytes::is_Java_byte_ordering_different() || Bytecodes::native_byte_order(bc /*, is_wide*/)); | |
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139 } |
| 0 | 140 }; |
| 141 | |
| 142 | |
| 143 // Abstractions for lookupswitch bytecode | |
| 2142 | 144 class LookupswitchPair VALUE_OBJ_CLASS_SPEC { |
| 0 | 145 private: |
| 2142 | 146 const address _bcp; |
| 147 | |
| 148 address addr_at (int offset) const { return _bcp + offset; } | |
| 149 int get_Java_u4_at (int offset) const { return Bytes::get_Java_u4(addr_at(offset)); } | |
| 0 | 150 |
| 151 public: | |
| 2142 | 152 LookupswitchPair(address bcp): _bcp(bcp) {} |
| 1565 | 153 int match() const { return get_Java_u4_at(0 * jintSize); } |
| 154 int offset() const { return get_Java_u4_at(1 * jintSize); } | |
| 0 | 155 }; |
| 156 | |
| 157 | |
| 158 class Bytecode_lookupswitch: public Bytecode { | |
| 159 public: | |
| 2142 | 160 Bytecode_lookupswitch(methodOop method, address bcp): Bytecode(method, bcp) { verify(); } |
| 161 // Defined in ciStreams.hpp | |
| 162 inline Bytecode_lookupswitch(const ciBytecodeStream* stream); | |
| 0 | 163 void verify() const PRODUCT_RETURN; |
| 164 | |
| 165 // Attributes | |
| 1565 | 166 int default_offset() const { return get_Java_u4_at(aligned_offset(1 + 0*jintSize)); } |
| 167 int number_of_pairs() const { return get_Java_u4_at(aligned_offset(1 + 1*jintSize)); } | |
| 2142 | 168 LookupswitchPair pair_at(int i) const { |
| 169 assert(0 <= i && i < number_of_pairs(), "pair index out of bounds"); | |
| 170 return LookupswitchPair(aligned_addr_at(1 + (1 + i)*2*jintSize)); | |
| 171 } | |
| 0 | 172 }; |
| 173 | |
| 174 class Bytecode_tableswitch: public Bytecode { | |
| 175 public: | |
| 2142 | 176 Bytecode_tableswitch(methodOop method, address bcp): Bytecode(method, bcp) { verify(); } |
| 177 // Defined in ciStreams.hpp | |
| 178 inline Bytecode_tableswitch(const ciBytecodeStream* stream); | |
| 0 | 179 void verify() const PRODUCT_RETURN; |
| 180 | |
| 181 // Attributes | |
| 1565 | 182 int default_offset() const { return get_Java_u4_at(aligned_offset(1 + 0*jintSize)); } |
| 183 int low_key() const { return get_Java_u4_at(aligned_offset(1 + 1*jintSize)); } | |
| 184 int high_key() const { return get_Java_u4_at(aligned_offset(1 + 2*jintSize)); } | |
| 0 | 185 int dest_offset_at(int i) const; |
| 186 int length() { return high_key()-low_key()+1; } | |
| 187 }; | |
| 188 | |
| 1602 | 189 // Common code for decoding invokes and field references. |
| 0 | 190 |
| 2142 | 191 class Bytecode_member_ref: public Bytecode { |
| 0 | 192 protected: |
| 2142 | 193 const methodHandle _method; // method containing the bytecode |
| 0 | 194 |
| 2142 | 195 Bytecode_member_ref(methodHandle method, int bci) : Bytecode(method(), method()->bcp_from(bci)), _method(method) {} |
| 196 | |
| 197 methodHandle method() const { return _method; } | |
| 1602 | 198 |
| 199 public: | |
| 200 int index() const; // cache index (loaded from instruction) | |
| 201 int pool_index() const; // constant pool index | |
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202 Symbol* name() const; // returns the name of the method or field |
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203 Symbol* signature() const; // returns the signature of the method or field |
| 1602 | 204 |
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205 BasicType result_type() const; // returns the result type of the getfield or invoke |
| 1602 | 206 }; |
| 207 | |
| 208 // Abstraction for invoke_{virtual, static, interface, special} | |
| 209 | |
| 210 class Bytecode_invoke: public Bytecode_member_ref { | |
| 211 protected: | |
| 2142 | 212 // Constructor that skips verification |
| 213 Bytecode_invoke(methodHandle method, int bci, bool unused) : Bytecode_member_ref(method, bci) {} | |
| 0 | 214 |
| 215 public: | |
| 2142 | 216 Bytecode_invoke(methodHandle method, int bci) : Bytecode_member_ref(method, bci) { verify(); } |
| 0 | 217 void verify() const; |
| 218 | |
| 219 // Attributes | |
| 220 methodHandle static_target(TRAPS); // "specified" method (from constant pool) | |
| 221 | |
| 222 // Testers | |
| 1602 | 223 bool is_invokeinterface() const { return java_code() == Bytecodes::_invokeinterface; } |
| 224 bool is_invokevirtual() const { return java_code() == Bytecodes::_invokevirtual; } | |
| 225 bool is_invokestatic() const { return java_code() == Bytecodes::_invokestatic; } | |
| 226 bool is_invokespecial() const { return java_code() == Bytecodes::_invokespecial; } | |
| 227 bool is_invokedynamic() const { return java_code() == Bytecodes::_invokedynamic; } | |
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228 |
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229 bool has_receiver() const { return !is_invokestatic() && !is_invokedynamic(); } |
| 0 | 230 |
| 231 bool is_valid() const { return is_invokeinterface() || | |
| 232 is_invokevirtual() || | |
| 233 is_invokestatic() || | |
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234 is_invokespecial() || |
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235 is_invokedynamic(); } |
| 0 | 236 |
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237 bool is_method_handle_invoke() const { |
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238 return (is_invokedynamic() || |
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239 (is_invokevirtual() && |
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240 method()->constants()->klass_ref_at_noresolve(index()) == vmSymbols::java_lang_invoke_MethodHandle() && |
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241 methodOopDesc::is_method_handle_invoke_name(name()))); |
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242 } |
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243 |
| 2142 | 244 // Helper to skip verification. Used is_valid() to check if the result is really an invoke |
| 245 inline friend Bytecode_invoke Bytecode_invoke_check(methodHandle method, int bci); | |
| 0 | 246 }; |
| 247 | |
| 2142 | 248 inline Bytecode_invoke Bytecode_invoke_check(methodHandle method, int bci) { |
| 249 return Bytecode_invoke(method, bci, false); | |
| 0 | 250 } |
| 251 | |
| 252 | |
| 1602 | 253 // Abstraction for all field accesses (put/get field/static) |
| 254 class Bytecode_field: public Bytecode_member_ref { | |
| 2142 | 255 public: |
| 256 Bytecode_field(methodHandle method, int bci) : Bytecode_member_ref(method, bci) { verify(); } | |
| 1602 | 257 |
| 258 // Testers | |
| 259 bool is_getfield() const { return java_code() == Bytecodes::_getfield; } | |
| 260 bool is_putfield() const { return java_code() == Bytecodes::_putfield; } | |
| 261 bool is_getstatic() const { return java_code() == Bytecodes::_getstatic; } | |
| 262 bool is_putstatic() const { return java_code() == Bytecodes::_putstatic; } | |
| 263 | |
| 264 bool is_getter() const { return is_getfield() || is_getstatic(); } | |
| 265 bool is_static() const { return is_getstatic() || is_putstatic(); } | |
| 266 | |
| 267 bool is_valid() const { return is_getfield() || | |
| 268 is_putfield() || | |
| 269 is_getstatic() || | |
| 270 is_putstatic(); } | |
| 0 | 271 void verify() const; |
| 272 }; | |
| 273 | |
| 274 // Abstraction for checkcast | |
| 275 class Bytecode_checkcast: public Bytecode { | |
| 276 public: | |
| 2142 | 277 Bytecode_checkcast(methodOop method, address bcp): Bytecode(method, bcp) { verify(); } |
| 0 | 278 void verify() const { assert(Bytecodes::java_code(code()) == Bytecodes::_checkcast, "check checkcast"); } |
| 279 | |
| 280 // Returns index | |
| 1565 | 281 long index() const { return get_index_u2(Bytecodes::_checkcast); }; |
| 0 | 282 }; |
| 283 | |
| 284 // Abstraction for instanceof | |
| 285 class Bytecode_instanceof: public Bytecode { | |
| 286 public: | |
| 2142 | 287 Bytecode_instanceof(methodOop method, address bcp): Bytecode(method, bcp) { verify(); } |
| 0 | 288 void verify() const { assert(code() == Bytecodes::_instanceof, "check instanceof"); } |
| 289 | |
| 290 // Returns index | |
| 1565 | 291 long index() const { return get_index_u2(Bytecodes::_instanceof); }; |
| 0 | 292 }; |
| 293 | |
| 294 class Bytecode_new: public Bytecode { | |
| 295 public: | |
| 2142 | 296 Bytecode_new(methodOop method, address bcp): Bytecode(method, bcp) { verify(); } |
| 0 | 297 void verify() const { assert(java_code() == Bytecodes::_new, "check new"); } |
| 298 | |
| 299 // Returns index | |
| 1565 | 300 long index() const { return get_index_u2(Bytecodes::_new); }; |
| 0 | 301 }; |
| 302 | |
| 303 class Bytecode_multianewarray: public Bytecode { | |
| 304 public: | |
| 2142 | 305 Bytecode_multianewarray(methodOop method, address bcp): Bytecode(method, bcp) { verify(); } |
| 0 | 306 void verify() const { assert(java_code() == Bytecodes::_multianewarray, "check new"); } |
| 307 | |
| 308 // Returns index | |
| 1565 | 309 long index() const { return get_index_u2(Bytecodes::_multianewarray); }; |
| 0 | 310 }; |
| 311 | |
| 312 class Bytecode_anewarray: public Bytecode { | |
| 313 public: | |
| 2142 | 314 Bytecode_anewarray(methodOop method, address bcp): Bytecode(method, bcp) { verify(); } |
| 0 | 315 void verify() const { assert(java_code() == Bytecodes::_anewarray, "check anewarray"); } |
| 316 | |
| 317 // Returns index | |
| 1565 | 318 long index() const { return get_index_u2(Bytecodes::_anewarray); }; |
| 0 | 319 }; |
| 320 | |
| 321 // Abstraction for ldc, ldc_w and ldc2_w | |
| 2142 | 322 class Bytecode_loadconstant: public Bytecode { |
| 1602 | 323 private: |
| 2142 | 324 const methodHandle _method; |
| 1602 | 325 |
| 326 int raw_index() const; | |
| 327 | |
| 0 | 328 public: |
| 2142 | 329 Bytecode_loadconstant(methodHandle method, int bci): Bytecode(method(), method->bcp_from(bci)), _method(method) { verify(); } |
| 1602 | 330 |
| 0 | 331 void verify() const { |
| 1602 | 332 assert(_method.not_null(), "must supply method"); |
| 0 | 333 Bytecodes::Code stdc = Bytecodes::java_code(code()); |
| 334 assert(stdc == Bytecodes::_ldc || | |
| 335 stdc == Bytecodes::_ldc_w || | |
| 336 stdc == Bytecodes::_ldc2_w, "load constant"); | |
| 337 } | |
| 338 | |
| 1602 | 339 // Only non-standard bytecodes (fast_aldc) have CP cache indexes. |
| 340 bool has_cache_index() const { return code() >= Bytecodes::number_of_java_codes; } | |
| 0 | 341 |
| 1602 | 342 int pool_index() const; // index into constant pool |
| 343 int cache_index() const { // index into CP cache (or -1 if none) | |
| 344 return has_cache_index() ? raw_index() : -1; | |
| 345 } | |
| 346 | |
| 347 BasicType result_type() const; // returns the result type of the ldc | |
| 348 | |
| 349 oop resolve_constant(TRAPS) const; | |
| 0 | 350 }; |
| 351 | |
| 1972 | 352 #endif // SHARE_VM_INTERPRETER_BYTECODE_HPP |