jdk8-mips64-public/hotspot: src/share/vm/classfile/bytecodeAssembler.hpp@78bbf4d43a14 (annotated)

src/share/vm/classfile/bytecodeAssembler.hpp@78bbf4d43a14 (annotated)

src/share/vm/classfile/bytecodeAssembler.hpp

Thu, 22 May 2014 15:52:41 -0400

author: drchase
date: Thu, 22 May 2014 15:52:41 -0400
changeset 6680: 78bbf4d43a14
parent 0: f90c822e73f8
permissions: -rw-r--r--

8037816: Fix for 8036122 breaks build with Xcode5/clang
8043029: Change 8037816 breaks HS build with older GCC versions which don't support diagnostic pragmas
8043164: Format warning in traceStream.hpp
Summary: Backport of main fix + two corrections, enables clang compilation, turns on format attributes, corrects/mutes warnings
Reviewed-by: kvn, coleenp, iveresov, twisti

 /*
  * Copyright (c) 2012, 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.
  *
  */
 #ifndef SHARE_VM_CLASSFILE_BYTECODEASSEMBLER_HPP
 #define SHARE_VM_CLASSFILE_BYTECODEASSEMBLER_HPP
 #include "memory/allocation.hpp"
 #include "oops/method.hpp"
 #include "oops/symbol.hpp"
 #include "utilities/globalDefinitions.hpp"
 #include "utilities/growableArray.hpp"
 #include "utilities/resourceHash.hpp"
 /**
  * Bytecode Assembler
  *
  * These classes are used to synthesize code for creating new methods from
  * within the VM.  This is only a partial implementation of an assembler;
  * only the bytecodes that are needed by clients are implemented at this time.
  * This is used during default method analysis to create overpass methods
  * and add them to a call during parsing.  Other uses (such as creating
  * bridges) may come later.  Any missing bytecodes can be implemented on an
  * as-need basis.
  */
 class BytecodeBuffer : public GrowableArray<u1> {
  public:
   BytecodeBuffer() : GrowableArray<u1>(20) {}
 };
 // Entries in a yet-to-be-created constant pool.  Limited types for now.
 class BytecodeCPEntry VALUE_OBJ_CLASS_SPEC {
  public:
   enum tag {
     ERROR_TAG,
     UTF8,
     KLASS,
     STRING,
     NAME_AND_TYPE,
     METHODREF
   };
   u1 _tag;
   union {
     Symbol* utf8;
     u2 klass;
     u2 string;
     struct {
       u2 name_index;
       u2 type_index;
     } name_and_type;
     struct {
       u2 class_index;
       u2 name_and_type_index;
     } methodref;
     uintptr_t hash;
   } _u;
   BytecodeCPEntry() : _tag(ERROR_TAG) { _u.hash = 0; }
   BytecodeCPEntry(u1 tag) : _tag(tag) { _u.hash = 0; }
   static BytecodeCPEntry utf8(Symbol* symbol) {
     BytecodeCPEntry bcpe(UTF8);
     bcpe._u.utf8 = symbol;
     return bcpe;
   }
   static BytecodeCPEntry klass(u2 index) {
     BytecodeCPEntry bcpe(KLASS);
     bcpe._u.klass = index;
     return bcpe;
   }
   static BytecodeCPEntry string(u2 index) {
     BytecodeCPEntry bcpe(STRING);
     bcpe._u.string = index;
     return bcpe;
   }
   static BytecodeCPEntry name_and_type(u2 name, u2 type) {
     BytecodeCPEntry bcpe(NAME_AND_TYPE);
     bcpe._u.name_and_type.name_index = name;
     bcpe._u.name_and_type.type_index = type;
     return bcpe;
   }
   static BytecodeCPEntry methodref(u2 class_index, u2 nat) {
     BytecodeCPEntry bcpe(METHODREF);
     bcpe._u.methodref.class_index = class_index;
     bcpe._u.methodref.name_and_type_index = nat;
     return bcpe;
   }
   static bool equals(BytecodeCPEntry const& e0, BytecodeCPEntry const& e1) {
     return e0._tag == e1._tag && e0._u.hash == e1._u.hash;
   }
   static unsigned hash(BytecodeCPEntry const& e0) {
     return (unsigned)(e0._tag ^ e0._u.hash);
   }
 };
 class BytecodeConstantPool : ResourceObj {
  private:
   typedef ResourceHashtable<BytecodeCPEntry, u2,
       &BytecodeCPEntry::hash, &BytecodeCPEntry::equals> IndexHash;
   ConstantPool* _orig;
   GrowableArray<BytecodeCPEntry> _entries;
   IndexHash _indices;
   u2 find_or_add(BytecodeCPEntry const& bcpe);
  public:
   BytecodeConstantPool(ConstantPool* orig) : _orig(orig) {}
   BytecodeCPEntry const& at(u2 index) const { return _entries.at(index); }
   InstanceKlass* pool_holder() const {
     return InstanceKlass::cast(_orig->pool_holder());
   }
   u2 utf8(Symbol* sym) {
     return find_or_add(BytecodeCPEntry::utf8(sym));
   }
   u2 klass(Symbol* class_name) {
     return find_or_add(BytecodeCPEntry::klass(utf8(class_name)));
   }
   u2 string(Symbol* str) {
     return find_or_add(BytecodeCPEntry::string(utf8(str)));
   }
   u2 name_and_type(Symbol* name, Symbol* sig) {
     return find_or_add(BytecodeCPEntry::name_and_type(utf8(name), utf8(sig)));
   }
   u2 methodref(Symbol* class_name, Symbol* name, Symbol* sig) {
     return find_or_add(BytecodeCPEntry::methodref(
         klass(class_name), name_and_type(name, sig)));
   }
   ConstantPool* create_constant_pool(TRAPS) const;
 };
 // Partial bytecode assembler - only what we need for creating
 // overpass methods for default methods is implemented
 class BytecodeAssembler : StackObj {
  private:
   BytecodeBuffer* _code;
   BytecodeConstantPool* _cp;
   void append(u1 imm_u1);
   void append(u2 imm_u2);
   void append(u4 imm_u4);
   void xload(u4 index, u1 quick, u1 twobyte);
  public:
   BytecodeAssembler(BytecodeBuffer* buffer, BytecodeConstantPool* cp)
     : _code(buffer), _cp(cp) {}
   void aload(u4 index);
   void areturn();
   void athrow();
   void checkcast(Symbol* sym);
   void dload(u4 index);
   void dreturn();
   void dup();
   void fload(u4 index);
   void freturn();
   void iload(u4 index);
   void invokespecial(Method* method);
   void invokespecial(Symbol* cls, Symbol* name, Symbol* sig);
   void invokevirtual(Method* method);
   void invokevirtual(Symbol* cls, Symbol* name, Symbol* sig);
   void ireturn();
   void ldc(u1 index);
   void ldc_w(u2 index);
   void lload(u4 index);
   void lreturn();
   void _new(Symbol* sym);
   void _return();
   void load_string(Symbol* sym);
   void load(BasicType bt, u4 index);
   void _return(BasicType bt);
 };
 #endif // SHARE_VM_CLASSFILE_BYTECODEASSEMBLER_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/classfile/bytecodeAssembler.hpp@78bbf4d43a14 (annotated)

src/share/vm/classfile/bytecodeAssembler.hpp