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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 // Base class for different kinds of abstractions working
26 // relative to an objects 'this' pointer.
27
28 class ThisRelativeObj VALUE_OBJ_CLASS_SPEC {
29 public:
30 // Address computation
31 address addr_at (int offset) const { return (address)this + offset; }
32 int byte_at (int offset) const { return *(addr_at(offset)); }
33 address aligned_addr_at (int offset) const { return (address)round_to((intptr_t)addr_at(offset), jintSize); }
34 int aligned_offset (int offset) const { return aligned_addr_at(offset) - addr_at(0); }
35
36 // Word access:
37 int get_Java_u2_at (int offset) const { return Bytes::get_Java_u2(addr_at(offset)); }
38 int get_Java_u4_at (int offset) const { return Bytes::get_Java_u4(addr_at(offset)); }
39 int get_native_u2_at (int offset) const { return Bytes::get_native_u2(addr_at(offset)); }
40 int get_native_u4_at (int offset) const { return Bytes::get_native_u4(addr_at(offset)); }
41 };
42
43
44 // The base class for different kinds of bytecode abstractions.
414 bool has_cache_index() const { return code() >= Bytecodes::number_of_java_codes; }
415
416 int pool_index() const; // index into constant pool
417 int cache_index() const { // index into CP cache (or -1 if none)
418 return has_cache_index() ? raw_index() : -1;
419 }
420
421 BasicType result_type() const; // returns the result type of the ldc
422
423 oop resolve_constant(TRAPS) const;
424
425 // Creation
426 inline friend Bytecode_loadconstant* Bytecode_loadconstant_at(methodHandle method, int bci);
427 };
428
429 inline Bytecode_loadconstant* Bytecode_loadconstant_at(methodHandle method, int bci) {
430 Bytecode_loadconstant* b = new Bytecode_loadconstant(method, bci);
431 DEBUG_ONLY(b->verify());
432 return b;
433 }
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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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
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
40
41 // Base class for different kinds of abstractions working
42 // relative to an objects 'this' pointer.
43
44 class ThisRelativeObj VALUE_OBJ_CLASS_SPEC {
45 public:
46 // Address computation
47 address addr_at (int offset) const { return (address)this + offset; }
48 int byte_at (int offset) const { return *(addr_at(offset)); }
49 address aligned_addr_at (int offset) const { return (address)round_to((intptr_t)addr_at(offset), jintSize); }
50 int aligned_offset (int offset) const { return aligned_addr_at(offset) - addr_at(0); }
51
52 // Word access:
53 int get_Java_u2_at (int offset) const { return Bytes::get_Java_u2(addr_at(offset)); }
54 int get_Java_u4_at (int offset) const { return Bytes::get_Java_u4(addr_at(offset)); }
55 int get_native_u2_at (int offset) const { return Bytes::get_native_u2(addr_at(offset)); }
56 int get_native_u4_at (int offset) const { return Bytes::get_native_u4(addr_at(offset)); }
57 };
58
59
60 // The base class for different kinds of bytecode abstractions.
430 bool has_cache_index() const { return code() >= Bytecodes::number_of_java_codes; }
431
432 int pool_index() const; // index into constant pool
433 int cache_index() const { // index into CP cache (or -1 if none)
434 return has_cache_index() ? raw_index() : -1;
435 }
436
437 BasicType result_type() const; // returns the result type of the ldc
438
439 oop resolve_constant(TRAPS) const;
440
441 // Creation
442 inline friend Bytecode_loadconstant* Bytecode_loadconstant_at(methodHandle method, int bci);
443 };
444
445 inline Bytecode_loadconstant* Bytecode_loadconstant_at(methodHandle method, int bci) {
446 Bytecode_loadconstant* b = new Bytecode_loadconstant(method, bci);
447 DEBUG_ONLY(b->verify());
448 return b;
449 }
450
451 #endif // SHARE_VM_INTERPRETER_BYTECODE_HPP
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