jdk8-mips64-public/hotspot: src/share/vm/interpreter/interpreter.cpp@f08d439fab8c (annotated)

src/share/vm/interpreter/interpreter.cpp@f08d439fab8c (annotated)

src/share/vm/interpreter/interpreter.cpp

Sun, 25 Sep 2011 16:03:29 -0700

author: never
date: Sun, 25 Sep 2011 16:03:29 -0700
changeset 3156: f08d439fab8c
parent 2781: e1162778c1c8
child 3787: 6759698e3140
permissions: -rw-r--r--

7089790: integrate bsd-port changes
Reviewed-by: kvn, twisti, jrose
Contributed-by: Kurt Miller <kurt@intricatesoftware.com>, Greg Lewis <glewis@eyesbeyond.com>, Jung-uk Kim <jkim@freebsd.org>, Christos Zoulas <christos@zoulas.com>, Landon Fuller <landonf@plausible.coop>, The FreeBSD Foundation <board@freebsdfoundation.org>, Michael Franz <mvfranz@gmail.com>, Roger Hoover <rhoover@apple.com>, Alexander Strange <astrange@apple.com>

 /*
  * Copyright (c) 1997, 2011, 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 "asm/assembler.hpp"
 #include "interpreter/bytecodeHistogram.hpp"
 #include "interpreter/bytecodeInterpreter.hpp"
 #include "interpreter/interpreter.hpp"
 #include "interpreter/interpreterRuntime.hpp"
 #include "interpreter/templateTable.hpp"
 #include "memory/allocation.inline.hpp"
 #include "memory/resourceArea.hpp"
 #include "oops/arrayOop.hpp"
 #include "oops/methodDataOop.hpp"
 #include "oops/methodOop.hpp"
 #include "oops/oop.inline.hpp"
 #include "prims/forte.hpp"
 #include "prims/jvmtiExport.hpp"
 #include "runtime/handles.inline.hpp"
 #include "runtime/sharedRuntime.hpp"
 #include "runtime/stubRoutines.hpp"
 #include "runtime/timer.hpp"
 # define __ _masm->
 //------------------------------------------------------------------------------------------------------------------------
 // Implementation of InterpreterCodelet
 void InterpreterCodelet::initialize(const char* description, Bytecodes::Code bytecode) {
   _description       = description;
   _bytecode          = bytecode;
 }
 void InterpreterCodelet::verify() {
 }
 void InterpreterCodelet::print_on(outputStream* st) const {
   if (PrintInterpreter) {
     st->cr();
     st->print_cr("----------------------------------------------------------------------");
   }
   if (description() != NULL) st->print("%s  ", description());
   if (bytecode()    >= 0   ) st->print("%d %s  ", bytecode(), Bytecodes::name(bytecode()));
   st->print_cr("[" INTPTR_FORMAT ", " INTPTR_FORMAT "]  %d bytes",
                 code_begin(), code_end(), code_size());
   if (PrintInterpreter) {
     st->cr();
     Disassembler::decode(code_begin(), code_end(), st);
   }
 }
 //------------------------------------------------------------------------------------------------------------------------
 // Implementation of  platform independent aspects of Interpreter
 void AbstractInterpreter::initialize() {
   if (_code != NULL) return;
   // make sure 'imported' classes are initialized
   if (CountBytecodes || TraceBytecodes || StopInterpreterAt) BytecodeCounter::reset();
   if (PrintBytecodeHistogram)                                BytecodeHistogram::reset();
   if (PrintBytecodePairHistogram)                            BytecodePairHistogram::reset();
   InvocationCounter::reinitialize(DelayCompilationDuringStartup);
 }
 void AbstractInterpreter::print() {
   tty->cr();
   tty->print_cr("----------------------------------------------------------------------");
   tty->print_cr("Interpreter");
   tty->cr();
   tty->print_cr("code size        = %6dK bytes", (int)_code->used_space()/1024);
   tty->print_cr("total space      = %6dK bytes", (int)_code->total_space()/1024);
   tty->print_cr("wasted space     = %6dK bytes", (int)_code->available_space()/1024);
   tty->cr();
   tty->print_cr("# of codelets    = %6d"      , _code->number_of_stubs());
   tty->print_cr("avg codelet size = %6d bytes", _code->used_space() / _code->number_of_stubs());
   tty->cr();
   _code->print();
   tty->print_cr("----------------------------------------------------------------------");
   tty->cr();
 }
 void interpreter_init() {
   Interpreter::initialize();
 #ifndef PRODUCT
   if (TraceBytecodes) BytecodeTracer::set_closure(BytecodeTracer::std_closure());
 #endif // PRODUCT
   // need to hit every safepoint in order to call zapping routine
   // register the interpreter
   Forte::register_stub(
     "Interpreter",
     AbstractInterpreter::code()->code_start(),
     AbstractInterpreter::code()->code_end()
   );
   // notify JVMTI profiler
   if (JvmtiExport::should_post_dynamic_code_generated()) {
     JvmtiExport::post_dynamic_code_generated("Interpreter",
                                              AbstractInterpreter::code()->code_start(),
                                              AbstractInterpreter::code()->code_end());
   }
 }
 //------------------------------------------------------------------------------------------------------------------------
 // Implementation of interpreter
 StubQueue* AbstractInterpreter::_code                                       = NULL;
 bool       AbstractInterpreter::_notice_safepoints                          = false;
 address    AbstractInterpreter::_rethrow_exception_entry                    = NULL;
 address    AbstractInterpreter::_native_entry_begin                         = NULL;
 address    AbstractInterpreter::_native_entry_end                           = NULL;
 address    AbstractInterpreter::_slow_signature_handler;
 address    AbstractInterpreter::_entry_table            [AbstractInterpreter::number_of_method_entries];
 address    AbstractInterpreter::_native_abi_to_tosca    [AbstractInterpreter::number_of_result_handlers];
 //------------------------------------------------------------------------------------------------------------------------
 // Generation of complete interpreter
 AbstractInterpreterGenerator::AbstractInterpreterGenerator(StubQueue* _code) {
   _masm                      = NULL;
 }
 static const BasicType types[Interpreter::number_of_result_handlers] = {
   T_BOOLEAN,
   T_CHAR   ,
   T_BYTE   ,
   T_SHORT  ,
   T_INT    ,
   T_LONG   ,
   T_VOID   ,
   T_FLOAT  ,
   T_DOUBLE ,
   T_OBJECT
 };
 void AbstractInterpreterGenerator::generate_all() {
   { CodeletMark cm(_masm, "slow signature handler");
     Interpreter::_slow_signature_handler = generate_slow_signature_handler();
   }
 }
 //------------------------------------------------------------------------------------------------------------------------
 // Entry points
 AbstractInterpreter::MethodKind AbstractInterpreter::method_kind(methodHandle m) {
   // Abstract method?
   if (m->is_abstract()) return abstract;
   // Invoker for method handles?
   if (m->is_method_handle_invoke())  return method_handle;
   // Native method?
   // Note: This test must come _before_ the test for intrinsic
   //       methods. See also comments below.
   if (m->is_native()) {
     assert(!m->is_method_handle_invoke(), "overlapping bits here, watch out");
     return m->is_synchronized() ? native_synchronized : native;
   }
   // Synchronized?
   if (m->is_synchronized()) {
     return zerolocals_synchronized;
   }
   if (RegisterFinalizersAtInit && m->code_size() == 1 &&
       m->intrinsic_id() == vmIntrinsics::_Object_init) {
     // We need to execute the special return bytecode to check for
     // finalizer registration so create a normal frame.
     return zerolocals;
   }
   // Empty method?
   if (m->is_empty_method()) {
     return empty;
   }
   // Special intrinsic method?
   // Note: This test must come _after_ the test for native methods,
   //       otherwise we will run into problems with JDK 1.2, see also
   //       AbstractInterpreterGenerator::generate_method_entry() for
   //       for details.
   switch (m->intrinsic_id()) {
     case vmIntrinsics::_dsin  : return java_lang_math_sin  ;
     case vmIntrinsics::_dcos  : return java_lang_math_cos  ;
     case vmIntrinsics::_dtan  : return java_lang_math_tan  ;
     case vmIntrinsics::_dabs  : return java_lang_math_abs  ;
     case vmIntrinsics::_dsqrt : return java_lang_math_sqrt ;
     case vmIntrinsics::_dlog  : return java_lang_math_log  ;
     case vmIntrinsics::_dlog10: return java_lang_math_log10;
     case vmIntrinsics::_Reference_get:
                                 return java_lang_ref_reference_get;
   }
   // Accessor method?
   if (m->is_accessor()) {
     assert(m->size_of_parameters() == 1, "fast code for accessors assumes parameter size = 1");
     return accessor;
   }
   // Note: for now: zero locals for all non-empty methods
   return zerolocals;
 }
 // Return true if the interpreter can prove that the given bytecode has
 // not yet been executed (in Java semantics, not in actual operation).
 bool AbstractInterpreter::is_not_reached(methodHandle method, int bci) {
   Bytecodes::Code code = method()->code_at(bci);
   if (!Bytecodes::must_rewrite(code)) {
     // might have been reached
     return false;
   }
   // the bytecode might not be rewritten if the method is an accessor, etc.
   address ientry = method->interpreter_entry();
   if (ientry != entry_for_kind(AbstractInterpreter::zerolocals) &&
       ientry != entry_for_kind(AbstractInterpreter::zerolocals_synchronized))
     return false;  // interpreter does not run this method!
   // otherwise, we can be sure this bytecode has never been executed
   return true;
 }
 #ifndef PRODUCT
 void AbstractInterpreter::print_method_kind(MethodKind kind) {
   switch (kind) {
     case zerolocals             : tty->print("zerolocals"             ); break;
     case zerolocals_synchronized: tty->print("zerolocals_synchronized"); break;
     case native                 : tty->print("native"                 ); break;
     case native_synchronized    : tty->print("native_synchronized"    ); break;
     case empty                  : tty->print("empty"                  ); break;
     case accessor               : tty->print("accessor"               ); break;
     case abstract               : tty->print("abstract"               ); break;
     case method_handle          : tty->print("method_handle"          ); break;
     case java_lang_math_sin     : tty->print("java_lang_math_sin"     ); break;
     case java_lang_math_cos     : tty->print("java_lang_math_cos"     ); break;
     case java_lang_math_tan     : tty->print("java_lang_math_tan"     ); break;
     case java_lang_math_abs     : tty->print("java_lang_math_abs"     ); break;
     case java_lang_math_sqrt    : tty->print("java_lang_math_sqrt"    ); break;
     case java_lang_math_log     : tty->print("java_lang_math_log"     ); break;
     case java_lang_math_log10   : tty->print("java_lang_math_log10"   ); break;
     default                     : ShouldNotReachHere();
   }
 }
 #endif // PRODUCT
 //------------------------------------------------------------------------------------------------------------------------
 // Deoptimization support
 // If deoptimization happens, this function returns the point of next bytecode to continue execution
 address AbstractInterpreter::deopt_continue_after_entry(methodOop method, address bcp, int callee_parameters, bool is_top_frame) {
   assert(method->contains(bcp), "just checkin'");
   Bytecodes::Code code   = Bytecodes::java_code_at(method, bcp);
   assert(!Interpreter::bytecode_should_reexecute(code), "should not reexecute");
   int             bci    = method->bci_from(bcp);
   int             length = -1; // initial value for debugging
   // compute continuation length
   length = Bytecodes::length_at(method, bcp);
   // compute result type
   BasicType type = T_ILLEGAL;
   switch (code) {
     case Bytecodes::_invokevirtual  :
     case Bytecodes::_invokespecial  :
     case Bytecodes::_invokestatic   :
     case Bytecodes::_invokeinterface: {
       Thread *thread = Thread::current();
       ResourceMark rm(thread);
       methodHandle mh(thread, method);
       type = Bytecode_invoke(mh, bci).result_type();
       // since the cache entry might not be initialized:
       // (NOT needed for the old calling convension)
       if (!is_top_frame) {
         int index = Bytes::get_native_u2(bcp+1);
         method->constants()->cache()->entry_at(index)->set_parameter_size(callee_parameters);
       }
       break;
     }
    case Bytecodes::_invokedynamic: {
       Thread *thread = Thread::current();
       ResourceMark rm(thread);
       methodHandle mh(thread, method);
       type = Bytecode_invoke(mh, bci).result_type();
       // since the cache entry might not be initialized:
       // (NOT needed for the old calling convension)
       if (!is_top_frame) {
         int index = Bytes::get_native_u4(bcp+1);
         method->constants()->cache()->secondary_entry_at(index)->set_parameter_size(callee_parameters);
       }
       break;
     }
     case Bytecodes::_ldc   :
     case Bytecodes::_ldc_w : // fall through
     case Bytecodes::_ldc2_w:
       {
         Thread *thread = Thread::current();
         ResourceMark rm(thread);
         methodHandle mh(thread, method);
         type = Bytecode_loadconstant(mh, bci).result_type();
         break;
       }
     default:
       type = Bytecodes::result_type(code);
       break;
   }
   // return entry point for computed continuation state & bytecode length
   return
     is_top_frame
     ? Interpreter::deopt_entry (as_TosState(type), length)
     : Interpreter::return_entry(as_TosState(type), length);
 }
 // If deoptimization happens, this function returns the point where the interpreter reexecutes
 // the bytecode.
 // Note: Bytecodes::_athrow is a special case in that it does not return
 //       Interpreter::deopt_entry(vtos, 0) like others
 address AbstractInterpreter::deopt_reexecute_entry(methodOop method, address bcp) {
   assert(method->contains(bcp), "just checkin'");
   Bytecodes::Code code   = Bytecodes::java_code_at(method, bcp);
 #ifdef COMPILER1
   if(code == Bytecodes::_athrow ) {
     return Interpreter::rethrow_exception_entry();
   }
 #endif /* COMPILER1 */
   return Interpreter::deopt_entry(vtos, 0);
 }
 // If deoptimization happens, the interpreter should reexecute these bytecodes.
 // This function mainly helps the compilers to set up the reexecute bit.
 bool AbstractInterpreter::bytecode_should_reexecute(Bytecodes::Code code) {
   switch (code) {
     case Bytecodes::_lookupswitch:
     case Bytecodes::_tableswitch:
     case Bytecodes::_fast_binaryswitch:
     case Bytecodes::_fast_linearswitch:
     // recompute condtional expression folded into _if<cond>
     case Bytecodes::_lcmp      :
     case Bytecodes::_fcmpl     :
     case Bytecodes::_fcmpg     :
     case Bytecodes::_dcmpl     :
     case Bytecodes::_dcmpg     :
     case Bytecodes::_ifnull    :
     case Bytecodes::_ifnonnull :
     case Bytecodes::_goto      :
     case Bytecodes::_goto_w    :
     case Bytecodes::_ifeq      :
     case Bytecodes::_ifne      :
     case Bytecodes::_iflt      :
     case Bytecodes::_ifge      :
     case Bytecodes::_ifgt      :
     case Bytecodes::_ifle      :
     case Bytecodes::_if_icmpeq :
     case Bytecodes::_if_icmpne :
     case Bytecodes::_if_icmplt :
     case Bytecodes::_if_icmpge :
     case Bytecodes::_if_icmpgt :
     case Bytecodes::_if_icmple :
     case Bytecodes::_if_acmpeq :
     case Bytecodes::_if_acmpne :
     // special cases
     case Bytecodes::_getfield  :
     case Bytecodes::_putfield  :
     case Bytecodes::_getstatic :
     case Bytecodes::_putstatic :
     case Bytecodes::_aastore   :
 #ifdef COMPILER1
     //special case of reexecution
     case Bytecodes::_athrow    :
 #endif
       return true;
     default:
       return false;
   }
 }
 void AbstractInterpreterGenerator::bang_stack_shadow_pages(bool native_call) {
   // Quick & dirty stack overflow checking: bang the stack & handle trap.
   // Note that we do the banging after the frame is setup, since the exception
   // handling code expects to find a valid interpreter frame on the stack.
   // Doing the banging earlier fails if the caller frame is not an interpreter
   // frame.
   // (Also, the exception throwing code expects to unlock any synchronized
   // method receiever, so do the banging after locking the receiver.)
   // Bang each page in the shadow zone. We can't assume it's been done for
   // an interpreter frame with greater than a page of locals, so each page
   // needs to be checked.  Only true for non-native.
   if (UseStackBanging) {
     const int start_page = native_call ? StackShadowPages : 1;
     const int page_size = os::vm_page_size();
     for (int pages = start_page; pages <= StackShadowPages ; pages++) {
       __ bang_stack_with_offset(pages*page_size);
     }
   }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/interpreter/interpreter.cpp@f08d439fab8c (annotated)

src/share/vm/interpreter/interpreter.cpp