jdk8-mips64-public/hotspot: src/share/vm/classfile/bytecodeAssembler.cpp@2c6ef90f030a (annotated)

src/share/vm/classfile/bytecodeAssembler.cpp@2c6ef90f030a (annotated)

src/share/vm/classfile/bytecodeAssembler.cpp

Mon, 07 Jul 2014 10:12:40 +0200

author: stefank
date: Mon, 07 Jul 2014 10:12:40 +0200
changeset 6992: 2c6ef90f030a
parent 6198: 55fb97c4c58d
child 6876: 710a3c8b516e
permissions: -rw-r--r--

8049421: G1 Class Unloading after completing a concurrent mark cycle
Reviewed-by: tschatzl, ehelin, brutisso, coleenp, roland, iveresov
Contributed-by: stefan.karlsson@oracle.com, mikael.gerdin@oracle.com

 /*
  * Copyright (c) 2012, 2013, 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.
  *
  */
 #include "precompiled.hpp"
 #include "classfile/bytecodeAssembler.hpp"
 #include "interpreter/bytecodes.hpp"
 #include "memory/oopFactory.hpp"
 #include "oops/constantPool.hpp"
 #ifdef TARGET_ARCH_x86
 # include "bytes_x86.hpp"
 #endif
 #ifdef TARGET_ARCH_sparc
 # include "bytes_sparc.hpp"
 #endif
 #ifdef TARGET_ARCH_zero
 # include "bytes_zero.hpp"
 #endif
 #ifdef TARGET_ARCH_arm
 # include "bytes_arm.hpp"
 #endif
 #ifdef TARGET_ARCH_ppc
 # include "bytes_ppc.hpp"
 #endif
 u2 BytecodeConstantPool::find_or_add(BytecodeCPEntry const& bcpe) {
   u2 index;
   u2* probe = _indices.get(bcpe);
   if (probe == NULL) {
     index = _entries.length();
     _entries.append(bcpe);
     _indices.put(bcpe, index);
   } else {
     index = *probe;
   }
   return index + _orig->length();
 }
 ConstantPool* BytecodeConstantPool::create_constant_pool(TRAPS) const {
   if (_entries.length() == 0) {
     return _orig;
   }
   ConstantPool* cp = ConstantPool::allocate(
       _orig->pool_holder()->class_loader_data(),
       _orig->length() + _entries.length(), CHECK_NULL);
   cp->set_pool_holder(_orig->pool_holder());
   _orig->copy_cp_to(1, _orig->length() - 1, cp, 1, CHECK_NULL);
   for (int i = 0; i < _entries.length(); ++i) {
     BytecodeCPEntry entry = _entries.at(i);
     int idx = i + _orig->length();
     switch (entry._tag) {
       case BytecodeCPEntry::UTF8:
         entry._u.utf8->increment_refcount();
         cp->symbol_at_put(idx, entry._u.utf8);
         break;
       case BytecodeCPEntry::KLASS:
         cp->unresolved_klass_at_put(
             idx, cp->symbol_at(entry._u.klass));
         break;
       case BytecodeCPEntry::STRING:
         cp->unresolved_string_at_put(
             idx, cp->symbol_at(entry._u.string));
         break;
       case BytecodeCPEntry::NAME_AND_TYPE:
         cp->name_and_type_at_put(idx,
             entry._u.name_and_type.name_index,
             entry._u.name_and_type.type_index);
         break;
       case BytecodeCPEntry::METHODREF:
         cp->method_at_put(idx,
             entry._u.methodref.class_index,
             entry._u.methodref.name_and_type_index);
         break;
       default:
         ShouldNotReachHere();
     }
   }
   return cp;
 }
 void BytecodeAssembler::append(u1 imm_u1) {
   _code->append(imm_u1);
 }
 void BytecodeAssembler::append(u2 imm_u2) {
   _code->append(0);
   _code->append(0);
   Bytes::put_Java_u2(_code->adr_at(_code->length() - 2), imm_u2);
 }
 void BytecodeAssembler::append(u4 imm_u4) {
   _code->append(0);
   _code->append(0);
   _code->append(0);
   _code->append(0);
   Bytes::put_Java_u4(_code->adr_at(_code->length() - 4), imm_u4);
 }
 void BytecodeAssembler::xload(u4 index, u1 onebyteop, u1 twobyteop) {
   if (index < 4) {
     _code->append(onebyteop + index);
   } else {
     _code->append(twobyteop);
     _code->append((u2)index);
   }
 }
 void BytecodeAssembler::dup() {
   _code->append(Bytecodes::_dup);
 }
 void BytecodeAssembler::_new(Symbol* sym) {
   u2 cpool_index = _cp->klass(sym);
   _code->append(Bytecodes::_new);
   append(cpool_index);
 }
 void BytecodeAssembler::load_string(Symbol* sym) {
   u2 cpool_index = _cp->string(sym);
   if (cpool_index < 0x100) {
     ldc(cpool_index);
   } else {
     ldc_w(cpool_index);
   }
 }
 void BytecodeAssembler::ldc(u1 index) {
   _code->append(Bytecodes::_ldc);
   append(index);
 }
 void BytecodeAssembler::ldc_w(u2 index) {
   _code->append(Bytecodes::_ldc_w);
   append(index);
 }
 void BytecodeAssembler::athrow() {
   _code->append(Bytecodes::_athrow);
 }
 void BytecodeAssembler::iload(u4 index) {
   xload(index, Bytecodes::_iload_0, Bytecodes::_iload);
 }
 void BytecodeAssembler::lload(u4 index) {
   xload(index, Bytecodes::_lload_0, Bytecodes::_lload);
 }
 void BytecodeAssembler::fload(u4 index) {
   xload(index, Bytecodes::_fload_0, Bytecodes::_fload);
 }
 void BytecodeAssembler::dload(u4 index) {
   xload(index, Bytecodes::_dload_0, Bytecodes::_dload);
 }
 void BytecodeAssembler::aload(u4 index) {
   xload(index, Bytecodes::_aload_0, Bytecodes::_aload);
 }
 void BytecodeAssembler::load(BasicType bt, u4 index) {
   switch (bt) {
     case T_BOOLEAN:
     case T_CHAR:
     case T_BYTE:
     case T_SHORT:
     case T_INT:     iload(index); break;
     case T_FLOAT:   fload(index); break;
     case T_DOUBLE:  dload(index); break;
     case T_LONG:    lload(index); break;
     case T_OBJECT:
     case T_ARRAY:   aload(index); break;
     default:
       ShouldNotReachHere();
   }
 }
 void BytecodeAssembler::checkcast(Symbol* sym) {
   u2 cpool_index = _cp->klass(sym);
   _code->append(Bytecodes::_checkcast);
   append(cpool_index);
 }
 void BytecodeAssembler::invokespecial(Method* method) {
   invokespecial(method->klass_name(), method->name(), method->signature());
 }
 void BytecodeAssembler::invokespecial(Symbol* klss, Symbol* name, Symbol* sig) {
   u2 methodref_index = _cp->methodref(klss, name, sig);
   _code->append(Bytecodes::_invokespecial);
   append(methodref_index);
 }
 void BytecodeAssembler::invokevirtual(Method* method) {
   invokevirtual(method->klass_name(), method->name(), method->signature());
 }
 void BytecodeAssembler::invokevirtual(Symbol* klss, Symbol* name, Symbol* sig) {
   u2 methodref_index = _cp->methodref(klss, name, sig);
   _code->append(Bytecodes::_invokevirtual);
   append(methodref_index);
 }
 void BytecodeAssembler::ireturn() {
   _code->append(Bytecodes::_ireturn);
 }
 void BytecodeAssembler::lreturn() {
   _code->append(Bytecodes::_lreturn);
 }
 void BytecodeAssembler::freturn() {
   _code->append(Bytecodes::_freturn);
 }
 void BytecodeAssembler::dreturn() {
   _code->append(Bytecodes::_dreturn);
 }
 void BytecodeAssembler::areturn() {
   _code->append(Bytecodes::_areturn);
 }
 void BytecodeAssembler::_return() {
   _code->append(Bytecodes::_return);
 }
 void BytecodeAssembler::_return(BasicType bt) {
   switch (bt) {
     case T_BOOLEAN:
     case T_CHAR:
     case T_BYTE:
     case T_SHORT:
     case T_INT:     ireturn(); break;
     case T_FLOAT:   freturn(); break;
     case T_DOUBLE:  dreturn(); break;
     case T_LONG:    lreturn(); break;
     case T_OBJECT:
     case T_ARRAY:   areturn(); break;
     case T_VOID:    _return(); break;
     default:
       ShouldNotReachHere();
   }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/classfile/bytecodeAssembler.cpp@2c6ef90f030a (annotated)

src/share/vm/classfile/bytecodeAssembler.cpp