Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * 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();

   }

 }