jdk8-mips64-public/hotspot: src/cpu/zero/vm/cppInterpreter

src/cpu/zero/vm/cppInterpreter_zero.cpp@04d83ba48607 (annotated)

src/cpu/zero/vm/cppInterpreter_zero.cpp

Thu, 24 May 2018 17:06:56 +0800

author: aoqi
date: Thu, 24 May 2018 17:06:56 +0800
changeset 8604: 04d83ba48607
parent 8429: 8f58998958ca
parent 7994: 04ff2f6cd0eb
child 9703: 2fdf635bcf28
permissions: -rw-r--r--

Merge

 /*
  * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2007, 2008, 2009, 2010, 2011 Red Hat, Inc.
  * 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/cppInterpreter.hpp"
 #include "interpreter/interpreter.hpp"
 #include "interpreter/interpreterGenerator.hpp"
 #include "interpreter/interpreterRuntime.hpp"
 #include "oops/arrayOop.hpp"
 #include "oops/methodData.hpp"
 #include "oops/method.hpp"
 #include "oops/oop.inline.hpp"
 #include "prims/jvmtiExport.hpp"
 #include "prims/jvmtiThreadState.hpp"
 #include "runtime/arguments.hpp"
 #include "runtime/deoptimization.hpp"
 #include "runtime/frame.inline.hpp"
 #include "runtime/interfaceSupport.hpp"
 #include "runtime/orderAccess.inline.hpp"
 #include "runtime/sharedRuntime.hpp"
 #include "runtime/stubRoutines.hpp"
 #include "runtime/synchronizer.hpp"
 #include "runtime/timer.hpp"
 #include "runtime/vframeArray.hpp"
 #include "stack_zero.inline.hpp"
 #include "utilities/debug.hpp"
 #include "utilities/macros.hpp"
 #ifdef SHARK
 #include "shark/shark_globals.hpp"
 #endif
 #ifdef CC_INTERP
 #define fixup_after_potential_safepoint()       \
   method = istate->method()
 #define CALL_VM_NOCHECK_NOFIX(func)             \
   thread->set_last_Java_frame();                \
   func;                                         \
   thread->reset_last_Java_frame();
 #define CALL_VM_NOCHECK(func)                   \
   CALL_VM_NOCHECK_NOFIX(func)                   \
   fixup_after_potential_safepoint()
 int CppInterpreter::normal_entry(Method* method, intptr_t UNUSED, TRAPS) {
   JavaThread *thread = (JavaThread *) THREAD;
   // Allocate and initialize our frame.
   InterpreterFrame *frame = InterpreterFrame::build(method, CHECK_0);
   thread->push_zero_frame(frame);
   // Execute those bytecodes!
   main_loop(0, THREAD);
   // No deoptimized frames on the stack
   return 0;
 }
 intptr_t narrow(BasicType type, intptr_t result) {
   // mask integer result to narrower return type.
   switch (type) {
     case T_BOOLEAN:
       return result&1;
     case T_BYTE:
       return (intptr_t)(jbyte)result;
     case T_CHAR:
       return (intptr_t)(uintptr_t)(jchar)result;
     case T_SHORT:
       return (intptr_t)(jshort)result;
     case T_OBJECT:  // nothing to do fall through
     case T_ARRAY:
     case T_LONG:
     case T_INT:
     case T_FLOAT:
     case T_DOUBLE:
     case T_VOID:
       return result;
     default  : ShouldNotReachHere();
   }
 }
 void CppInterpreter::main_loop(int recurse, TRAPS) {
   JavaThread *thread = (JavaThread *) THREAD;
   ZeroStack *stack = thread->zero_stack();
   // If we are entering from a deopt we may need to call
   // ourself a few times in order to get to our frame.
   if (recurse)
     main_loop(recurse - 1, THREAD);
   InterpreterFrame *frame = thread->top_zero_frame()->as_interpreter_frame();
   interpreterState istate = frame->interpreter_state();
   Method* method = istate->method();
   intptr_t *result = NULL;
   int result_slots = 0;
   while (true) {
     // We can set up the frame anchor with everything we want at
     // this point as we are thread_in_Java and no safepoints can
     // occur until we go to vm mode.  We do have to clear flags
     // on return from vm but that is it.
     thread->set_last_Java_frame();
     // Call the interpreter
     if (JvmtiExport::can_post_interpreter_events())
       BytecodeInterpreter::runWithChecks(istate);
     else
       BytecodeInterpreter::run(istate);
     fixup_after_potential_safepoint();
     // Clear the frame anchor
     thread->reset_last_Java_frame();
     // Examine the message from the interpreter to decide what to do
     if (istate->msg() == BytecodeInterpreter::call_method) {
       Method* callee = istate->callee();
       // Trim back the stack to put the parameters at the top
       stack->set_sp(istate->stack() + 1);
       // Make the call
       Interpreter::invoke_method(callee, istate->callee_entry_point(), THREAD);
       fixup_after_potential_safepoint();
       // Convert the result
       istate->set_stack(stack->sp() - 1);
       // Restore the stack
       stack->set_sp(istate->stack_limit() + 1);
       // Resume the interpreter
       istate->set_msg(BytecodeInterpreter::method_resume);
     }
     else if (istate->msg() == BytecodeInterpreter::more_monitors) {
       int monitor_words = frame::interpreter_frame_monitor_size();
       // Allocate the space
       stack->overflow_check(monitor_words, THREAD);
       if (HAS_PENDING_EXCEPTION)
         break;
       stack->alloc(monitor_words * wordSize);
       // Move the expression stack contents
       for (intptr_t *p = istate->stack() + 1; p < istate->stack_base(); p++)
         *(p - monitor_words) = *p;
       // Move the expression stack pointers
       istate->set_stack_limit(istate->stack_limit() - monitor_words);
       istate->set_stack(istate->stack() - monitor_words);
       istate->set_stack_base(istate->stack_base() - monitor_words);
       // Zero the new monitor so the interpreter can find it.
       ((BasicObjectLock *) istate->stack_base())->set_obj(NULL);
       // Resume the interpreter
       istate->set_msg(BytecodeInterpreter::got_monitors);
     }
     else if (istate->msg() == BytecodeInterpreter::return_from_method) {
       // Copy the result into the caller's frame
       result_slots = type2size[method->result_type()];
       assert(result_slots >= 0 && result_slots <= 2, "what?");
       result = istate->stack() + result_slots;
       break;
     }
     else if (istate->msg() == BytecodeInterpreter::throwing_exception) {
       assert(HAS_PENDING_EXCEPTION, "should do");
       break;
     }
     else if (istate->msg() == BytecodeInterpreter::do_osr) {
       // Unwind the current frame
       thread->pop_zero_frame();
       // Remove any extension of the previous frame
       int extra_locals = method->max_locals() - method->size_of_parameters();
       stack->set_sp(stack->sp() + extra_locals);
       // Jump into the OSR method
       Interpreter::invoke_osr(
         method, istate->osr_entry(), istate->osr_buf(), THREAD);
       return;
     }
     else {
       ShouldNotReachHere();
     }
   }
   // Unwind the current frame
   thread->pop_zero_frame();
   // Pop our local variables
   stack->set_sp(stack->sp() + method->max_locals());
   // Push our result
   for (int i = 0; i < result_slots; i++) {
     // Adjust result to smaller
     union {
       intptr_t res;
       jint res_jint;
     };
     res = result[-i];
     if (result_slots == 1) {
       BasicType t = method->result_type();
       if (is_subword_type(t)) {
         res_jint = (jint)narrow(t, res_jint);
       }
     }
     stack->push(res);
   }
 }
 int CppInterpreter::native_entry(Method* method, intptr_t UNUSED, TRAPS) {
   // Make sure method is native and not abstract
   assert(method->is_native() && !method->is_abstract(), "should be");
   JavaThread *thread = (JavaThread *) THREAD;
   ZeroStack *stack = thread->zero_stack();
   // Allocate and initialize our frame
   InterpreterFrame *frame = InterpreterFrame::build(method, CHECK_0);
   thread->push_zero_frame(frame);
   interpreterState istate = frame->interpreter_state();
   intptr_t *locals = istate->locals();
   // Update the invocation counter
   if ((UseCompiler || CountCompiledCalls) && !method->is_synchronized()) {
     MethodCounters* mcs = method->method_counters();
     if (mcs == NULL) {
       CALL_VM_NOCHECK(mcs = InterpreterRuntime::build_method_counters(thread, method));
       if (HAS_PENDING_EXCEPTION)
         goto unwind_and_return;
     }
     InvocationCounter *counter = mcs->invocation_counter();
     counter->increment();
     if (counter->reached_InvocationLimit(mcs->backedge_counter())) {
       CALL_VM_NOCHECK(
         InterpreterRuntime::frequency_counter_overflow(thread, NULL));
       if (HAS_PENDING_EXCEPTION)
         goto unwind_and_return;
     }
   }
   // Lock if necessary
   BasicObjectLock *monitor;
   monitor = NULL;
   if (method->is_synchronized()) {
     monitor = (BasicObjectLock*) istate->stack_base();
     oop lockee = monitor->obj();
     markOop disp = lockee->mark()->set_unlocked();
     monitor->lock()->set_displaced_header(disp);
     if (Atomic::cmpxchg_ptr(monitor, lockee->mark_addr(), disp) != disp) {
       if (thread->is_lock_owned((address) disp->clear_lock_bits())) {
         monitor->lock()->set_displaced_header(NULL);
       }
       else {
         CALL_VM_NOCHECK(InterpreterRuntime::monitorenter(thread, monitor));
         if (HAS_PENDING_EXCEPTION)
           goto unwind_and_return;
       }
     }
   }
   // Get the signature handler
   InterpreterRuntime::SignatureHandler *handler; {
     address handlerAddr = method->signature_handler();
     if (handlerAddr == NULL) {
       CALL_VM_NOCHECK(InterpreterRuntime::prepare_native_call(thread, method));
       if (HAS_PENDING_EXCEPTION)
         goto unlock_unwind_and_return;
       handlerAddr = method->signature_handler();
       assert(handlerAddr != NULL, "eh?");
     }
     if (handlerAddr == (address) InterpreterRuntime::slow_signature_handler) {
       CALL_VM_NOCHECK(handlerAddr =
         InterpreterRuntime::slow_signature_handler(thread, method, NULL,NULL));
       if (HAS_PENDING_EXCEPTION)
         goto unlock_unwind_and_return;
     }
     handler = \
       InterpreterRuntime::SignatureHandler::from_handlerAddr(handlerAddr);
   }
   // Get the native function entry point
   address function;
   function = method->native_function();
   assert(function != NULL, "should be set if signature handler is");
   // Build the argument list
   stack->overflow_check(handler->argument_count() * 2, THREAD);
   if (HAS_PENDING_EXCEPTION)
     goto unlock_unwind_and_return;
   void **arguments;
   void *mirror; {
     arguments =
       (void **) stack->alloc(handler->argument_count() * sizeof(void **));
     void **dst = arguments;
     void *env = thread->jni_environment();
     *(dst++) = &env;
     if (method->is_static()) {
       istate->set_oop_temp(
         method->constants()->pool_holder()->java_mirror());
       mirror = istate->oop_temp_addr();
       *(dst++) = &mirror;
     }
     intptr_t *src = locals;
     for (int i = dst - arguments; i < handler->argument_count(); i++) {
       ffi_type *type = handler->argument_type(i);
       if (type == &ffi_type_pointer) {
         if (*src) {
           stack->push((intptr_t) src);
           *(dst++) = stack->sp();
         }
         else {
           *(dst++) = src;
         }
         src--;
       }
       else if (type->size == 4) {
         *(dst++) = src--;
       }
       else if (type->size == 8) {
         src--;
         *(dst++) = src--;
       }
       else {
         ShouldNotReachHere();
       }
     }
   }
   // Set up the Java frame anchor
   thread->set_last_Java_frame();
   // Change the thread state to _thread_in_native
   ThreadStateTransition::transition_from_java(thread, _thread_in_native);
   // Make the call
   intptr_t result[4 - LogBytesPerWord];
   ffi_call(handler->cif(), (void (*)()) function, result, arguments);
   // Change the thread state back to _thread_in_Java.
   // ThreadStateTransition::transition_from_native() cannot be used
   // here because it does not check for asynchronous exceptions.
   // We have to manage the transition ourself.
   thread->set_thread_state(_thread_in_native_trans);
   // Make sure new state is visible in the GC thread
   if (os::is_MP()) {
     if (UseMembar) {
       OrderAccess::fence();
     }
     else {
       InterfaceSupport::serialize_memory(thread);
     }
   }
   // Handle safepoint operations, pending suspend requests,
   // and pending asynchronous exceptions.
   if (SafepointSynchronize::do_call_back() ||
       thread->has_special_condition_for_native_trans()) {
     JavaThread::check_special_condition_for_native_trans(thread);
     CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops());
   }
   // Finally we can change the thread state to _thread_in_Java.
   thread->set_thread_state(_thread_in_Java);
   fixup_after_potential_safepoint();
   // Clear the frame anchor
   thread->reset_last_Java_frame();
   // If the result was an oop then unbox it and store it in
   // oop_temp where the garbage collector can see it before
   // we release the handle it might be protected by.
   if (handler->result_type() == &ffi_type_pointer) {
     if (result[0])
       istate->set_oop_temp(*(oop *) result[0]);
     else
       istate->set_oop_temp(NULL);
   }
   // Reset handle block
   thread->active_handles()->clear();
  unlock_unwind_and_return:
   // Unlock if necessary
   if (monitor) {
     BasicLock *lock = monitor->lock();
     markOop header = lock->displaced_header();
     oop rcvr = monitor->obj();
     monitor->set_obj(NULL);
     if (header != NULL) {
       if (Atomic::cmpxchg_ptr(header, rcvr->mark_addr(), lock) != lock) {
         monitor->set_obj(rcvr); {
           HandleMark hm(thread);
           CALL_VM_NOCHECK(InterpreterRuntime::monitorexit(thread, monitor));
         }
       }
     }
   }
  unwind_and_return:
   // Unwind the current activation
   thread->pop_zero_frame();
   // Pop our parameters
   stack->set_sp(stack->sp() + method->size_of_parameters());
   // Push our result
   if (!HAS_PENDING_EXCEPTION) {
     BasicType type = method->result_type();
     stack->set_sp(stack->sp() - type2size[type]);
     switch (type) {
     case T_VOID:
       break;
     case T_BOOLEAN:
 #ifndef VM_LITTLE_ENDIAN
       result[0] <<= (BitsPerWord - BitsPerByte);
 #endif
       SET_LOCALS_INT(*(jboolean *) result != 0, 0);
       break;
     case T_CHAR:
 #ifndef VM_LITTLE_ENDIAN
       result[0] <<= (BitsPerWord - BitsPerShort);
 #endif
       SET_LOCALS_INT(*(jchar *) result, 0);
       break;
     case T_BYTE:
 #ifndef VM_LITTLE_ENDIAN
       result[0] <<= (BitsPerWord - BitsPerByte);
 #endif
       SET_LOCALS_INT(*(jbyte *) result, 0);
       break;
     case T_SHORT:
 #ifndef VM_LITTLE_ENDIAN
       result[0] <<= (BitsPerWord - BitsPerShort);
 #endif
       SET_LOCALS_INT(*(jshort *) result, 0);
       break;
     case T_INT:
 #ifndef VM_LITTLE_ENDIAN
       result[0] <<= (BitsPerWord - BitsPerInt);
 #endif
       SET_LOCALS_INT(*(jint *) result, 0);
       break;
     case T_LONG:
       SET_LOCALS_LONG(*(jlong *) result, 0);
       break;
     case T_FLOAT:
       SET_LOCALS_FLOAT(*(jfloat *) result, 0);
       break;
     case T_DOUBLE:
       SET_LOCALS_DOUBLE(*(jdouble *) result, 0);
       break;
     case T_OBJECT:
     case T_ARRAY:
       SET_LOCALS_OBJECT(istate->oop_temp(), 0);
       break;
     default:
       ShouldNotReachHere();
     }
   }
   // No deoptimized frames on the stack
   return 0;
 }
 int CppInterpreter::accessor_entry(Method* method, intptr_t UNUSED, TRAPS) {
   JavaThread *thread = (JavaThread *) THREAD;
   ZeroStack *stack = thread->zero_stack();
   intptr_t *locals = stack->sp();
   // Drop into the slow path if we need a safepoint check
   if (SafepointSynchronize::do_call_back()) {
     return normal_entry(method, 0, THREAD);
   }
   // Load the object pointer and drop into the slow path
   // if we have a NullPointerException
   oop object = LOCALS_OBJECT(0);
   if (object == NULL) {
     return normal_entry(method, 0, THREAD);
   }
   // Read the field index from the bytecode, which looks like this:
   //  0:  aload_0
   //  1:  getfield
   //  2:    index
   //  3:    index
   //  4:  ireturn/areturn
   // NB this is not raw bytecode: index is in machine order
   u1 *code = method->code_base();
   assert(code[0] == Bytecodes::_aload_0 &&
          code[1] == Bytecodes::_getfield &&
          (code[4] == Bytecodes::_ireturn ||
           code[4] == Bytecodes::_areturn), "should do");
   u2 index = Bytes::get_native_u2(&code[2]);
   // Get the entry from the constant pool cache, and drop into
   // the slow path if it has not been resolved
   ConstantPoolCache* cache = method->constants()->cache();
   ConstantPoolCacheEntry* entry = cache->entry_at(index);
   if (!entry->is_resolved(Bytecodes::_getfield)) {
     return normal_entry(method, 0, THREAD);
   }
   // Get the result and push it onto the stack
   switch (entry->flag_state()) {
   case ltos:
   case dtos:
     stack->overflow_check(1, CHECK_0);
     stack->alloc(wordSize);
     break;
   }
   if (entry->is_volatile()) {
     switch (entry->flag_state()) {
     case ctos:
       SET_LOCALS_INT(object->char_field_acquire(entry->f2_as_index()), 0);
       break;
     case btos:
     case ztos:
       SET_LOCALS_INT(object->byte_field_acquire(entry->f2_as_index()), 0);
       break;
     case stos:
       SET_LOCALS_INT(object->short_field_acquire(entry->f2_as_index()), 0);
       break;
     case itos:
       SET_LOCALS_INT(object->int_field_acquire(entry->f2_as_index()), 0);
       break;
     case ltos:
       SET_LOCALS_LONG(object->long_field_acquire(entry->f2_as_index()), 0);
       break;
     case ftos:
       SET_LOCALS_FLOAT(object->float_field_acquire(entry->f2_as_index()), 0);
       break;
     case dtos:
       SET_LOCALS_DOUBLE(object->double_field_acquire(entry->f2_as_index()), 0);
       break;
     case atos:
       SET_LOCALS_OBJECT(object->obj_field_acquire(entry->f2_as_index()), 0);
       break;
     default:
       ShouldNotReachHere();
     }
   }
   else {
     switch (entry->flag_state()) {
     case ctos:
       SET_LOCALS_INT(object->char_field(entry->f2_as_index()), 0);
       break;
     case btos:
     case ztos:
       SET_LOCALS_INT(object->byte_field(entry->f2_as_index()), 0);
       break;
     case stos:
       SET_LOCALS_INT(object->short_field(entry->f2_as_index()), 0);
       break;
     case itos:
       SET_LOCALS_INT(object->int_field(entry->f2_as_index()), 0);
       break;
     case ltos:
       SET_LOCALS_LONG(object->long_field(entry->f2_as_index()), 0);
       break;
     case ftos:
       SET_LOCALS_FLOAT(object->float_field(entry->f2_as_index()), 0);
       break;
     case dtos:
       SET_LOCALS_DOUBLE(object->double_field(entry->f2_as_index()), 0);
       break;
     case atos:
       SET_LOCALS_OBJECT(object->obj_field(entry->f2_as_index()), 0);
       break;
     default:
       ShouldNotReachHere();
     }
   }
   // No deoptimized frames on the stack
   return 0;
 }
 int CppInterpreter::empty_entry(Method* method, intptr_t UNUSED, TRAPS) {
   JavaThread *thread = (JavaThread *) THREAD;
   ZeroStack *stack = thread->zero_stack();
   // Drop into the slow path if we need a safepoint check
   if (SafepointSynchronize::do_call_back()) {
     return normal_entry(method, 0, THREAD);
   }
   // Pop our parameters
   stack->set_sp(stack->sp() + method->size_of_parameters());
   // No deoptimized frames on the stack
   return 0;
 }
 // The new slots will be inserted before slot insert_before.
 // Slots < insert_before will have the same slot number after the insert.
 // Slots >= insert_before will become old_slot + num_slots.
 void CppInterpreter::insert_vmslots(int insert_before, int num_slots, TRAPS) {
   JavaThread *thread = (JavaThread *) THREAD;
   ZeroStack *stack = thread->zero_stack();
   // Allocate the space
   stack->overflow_check(num_slots, CHECK);
   stack->alloc(num_slots * wordSize);
   intptr_t *vmslots = stack->sp();
   // Shuffle everything up
   for (int i = 0; i < insert_before; i++)
     SET_VMSLOTS_SLOT(VMSLOTS_SLOT(i + num_slots), i);
 }
 void CppInterpreter::remove_vmslots(int first_slot, int num_slots, TRAPS) {
   JavaThread *thread = (JavaThread *) THREAD;
   ZeroStack *stack = thread->zero_stack();
   intptr_t *vmslots = stack->sp();
   // Move everything down
   for (int i = first_slot - 1; i >= 0; i--)
     SET_VMSLOTS_SLOT(VMSLOTS_SLOT(i), i + num_slots);
   // Deallocate the space
   stack->set_sp(stack->sp() + num_slots);
 }
 BasicType CppInterpreter::result_type_of_handle(oop method_handle) {
   oop method_type = java_lang_invoke_MethodHandle::type(method_handle);
   oop return_type = java_lang_invoke_MethodType::rtype(method_type);
   return java_lang_Class::as_BasicType(return_type, (Klass* *) NULL);
 }
 intptr_t* CppInterpreter::calculate_unwind_sp(ZeroStack* stack,
                                               oop method_handle) {
   oop method_type = java_lang_invoke_MethodHandle::type(method_handle);
   int argument_slots = java_lang_invoke_MethodType::ptype_slot_count(method_type);
   return stack->sp() + argument_slots;
 }
 IRT_ENTRY(void, CppInterpreter::throw_exception(JavaThread* thread,
                                                 Symbol*     name,
                                                 char*       message))
   THROW_MSG(name, message);
 IRT_END
 InterpreterFrame *InterpreterFrame::build(Method* const method, TRAPS) {
   JavaThread *thread = (JavaThread *) THREAD;
   ZeroStack *stack = thread->zero_stack();
   // Calculate the size of the frame we'll build, including
   // any adjustments to the caller's frame that we'll make.
   int extra_locals  = 0;
   int monitor_words = 0;
   int stack_words   = 0;
   if (!method->is_native()) {
     extra_locals = method->max_locals() - method->size_of_parameters();
     stack_words  = method->max_stack();
   }
   if (method->is_synchronized()) {
     monitor_words = frame::interpreter_frame_monitor_size();
   }
   stack->overflow_check(
     extra_locals + header_words + monitor_words + stack_words, CHECK_NULL);
   // Adjust the caller's stack frame to accomodate any additional
   // local variables we have contiguously with our parameters.
   for (int i = 0; i < extra_locals; i++)
     stack->push(0);
   intptr_t *locals;
   if (method->is_native())
     locals = stack->sp() + (method->size_of_parameters() - 1);
   else
     locals = stack->sp() + (method->max_locals() - 1);
   stack->push(0); // next_frame, filled in later
   intptr_t *fp = stack->sp();
   assert(fp - stack->sp() == next_frame_off, "should be");
   stack->push(INTERPRETER_FRAME);
   assert(fp - stack->sp() == frame_type_off, "should be");
   interpreterState istate =
     (interpreterState) stack->alloc(sizeof(BytecodeInterpreter));
   assert(fp - stack->sp() == istate_off, "should be");
   istate->set_locals(locals);
   istate->set_method(method);
   istate->set_self_link(istate);
   istate->set_prev_link(NULL);
   istate->set_thread(thread);
   istate->set_bcp(method->is_native() ? NULL : method->code_base());
   istate->set_constants(method->constants()->cache());
   istate->set_msg(BytecodeInterpreter::method_entry);
   istate->set_oop_temp(NULL);
   istate->set_mdx(NULL);
   istate->set_callee(NULL);
   istate->set_monitor_base((BasicObjectLock *) stack->sp());
   if (method->is_synchronized()) {
     BasicObjectLock *monitor =
       (BasicObjectLock *) stack->alloc(monitor_words * wordSize);
     oop object;
     if (method->is_static())
       object = method->constants()->pool_holder()->java_mirror();
     else
       object = (oop) (void*)locals[0];
     monitor->set_obj(object);
   }
   istate->set_stack_base(stack->sp());
   istate->set_stack(stack->sp() - 1);
   if (stack_words)
     stack->alloc(stack_words * wordSize);
   istate->set_stack_limit(stack->sp() - 1);
   return (InterpreterFrame *) fp;
 }
 int AbstractInterpreter::BasicType_as_index(BasicType type) {
   int i = 0;
   switch (type) {
     case T_BOOLEAN: i = 0; break;
     case T_CHAR   : i = 1; break;
     case T_BYTE   : i = 2; break;
     case T_SHORT  : i = 3; break;
     case T_INT    : i = 4; break;
     case T_LONG   : i = 5; break;
     case T_VOID   : i = 6; break;
     case T_FLOAT  : i = 7; break;
     case T_DOUBLE : i = 8; break;
     case T_OBJECT : i = 9; break;
     case T_ARRAY  : i = 9; break;
     default       : ShouldNotReachHere();
   }
   assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers,
          "index out of bounds");
   return i;
 }
 address InterpreterGenerator::generate_empty_entry() {
   if (!UseFastEmptyMethods)
     return NULL;
   return generate_entry((address) CppInterpreter::empty_entry);
 }
 address InterpreterGenerator::generate_accessor_entry() {
   if (!UseFastAccessorMethods)
     return NULL;
   return generate_entry((address) CppInterpreter::accessor_entry);
 }
 address InterpreterGenerator::generate_Reference_get_entry(void) {
 #if INCLUDE_ALL_GCS
   if (UseG1GC) {
     // We need to generate have a routine that generates code to:
     //   * load the value in the referent field
     //   * passes that value to the pre-barrier.
     //
     // In the case of G1 this will record the value of the
     // referent in an SATB buffer if marking is active.
     // This will cause concurrent marking to mark the referent
     // field as live.
     Unimplemented();
   }
 #endif // INCLUDE_ALL_GCS
   // If G1 is not enabled then attempt to go through the accessor entry point
   // Reference.get is an accessor
   return generate_accessor_entry();
 }
 address InterpreterGenerator::generate_native_entry(bool synchronized) {
   assert(synchronized == false, "should be");
   return generate_entry((address) CppInterpreter::native_entry);
 }
 address InterpreterGenerator::generate_normal_entry(bool synchronized) {
   assert(synchronized == false, "should be");
   return generate_entry((address) CppInterpreter::normal_entry);
 }
 address AbstractInterpreterGenerator::generate_method_entry(
     AbstractInterpreter::MethodKind kind) {
   address entry_point = NULL;
   switch (kind) {
   case Interpreter::zerolocals:
   case Interpreter::zerolocals_synchronized:
     break;
   case Interpreter::native:
     entry_point = ((InterpreterGenerator*) this)->generate_native_entry(false);
     break;
   case Interpreter::native_synchronized:
     entry_point = ((InterpreterGenerator*) this)->generate_native_entry(false);
     break;
   case Interpreter::empty:
     entry_point = ((InterpreterGenerator*) this)->generate_empty_entry();
     break;
   case Interpreter::accessor:
     entry_point = ((InterpreterGenerator*) this)->generate_accessor_entry();
     break;
   case Interpreter::abstract:
     entry_point = ((InterpreterGenerator*) this)->generate_abstract_entry();
     break;
   case Interpreter::java_lang_math_sin:
   case Interpreter::java_lang_math_cos:
   case Interpreter::java_lang_math_tan:
   case Interpreter::java_lang_math_abs:
   case Interpreter::java_lang_math_log:
   case Interpreter::java_lang_math_log10:
   case Interpreter::java_lang_math_sqrt:
   case Interpreter::java_lang_math_pow:
   case Interpreter::java_lang_math_exp:
     entry_point = ((InterpreterGenerator*) this)->generate_math_entry(kind);
     break;
   case Interpreter::java_lang_ref_reference_get:
     entry_point = ((InterpreterGenerator*)this)->generate_Reference_get_entry();
     break;
   default:
     ShouldNotReachHere();
   }
   if (entry_point == NULL)
     entry_point = ((InterpreterGenerator*) this)->generate_normal_entry(false);
   return entry_point;
 }
 InterpreterGenerator::InterpreterGenerator(StubQueue* code)
  : CppInterpreterGenerator(code) {
    generate_all();
 }
 // Deoptimization helpers
 InterpreterFrame *InterpreterFrame::build(int size, TRAPS) {
   ZeroStack *stack = ((JavaThread *) THREAD)->zero_stack();
   int size_in_words = size >> LogBytesPerWord;
   assert(size_in_words * wordSize == size, "unaligned");
   assert(size_in_words >= header_words, "too small");
   stack->overflow_check(size_in_words, CHECK_NULL);
   stack->push(0); // next_frame, filled in later
   intptr_t *fp = stack->sp();
   assert(fp - stack->sp() == next_frame_off, "should be");
   stack->push(INTERPRETER_FRAME);
   assert(fp - stack->sp() == frame_type_off, "should be");
   interpreterState istate =
     (interpreterState) stack->alloc(sizeof(BytecodeInterpreter));
   assert(fp - stack->sp() == istate_off, "should be");
   istate->set_self_link(NULL); // mark invalid
   stack->alloc((size_in_words - header_words) * wordSize);
   return (InterpreterFrame *) fp;
 }
 int AbstractInterpreter::size_activation(int       max_stack,
                                          int       tempcount,
                                          int       extra_args,
                                          int       moncount,
                                          int       callee_param_count,
                                          int       callee_locals,
                                          bool      is_top_frame) {
   int header_words        = InterpreterFrame::header_words;
   int monitor_words       = moncount * frame::interpreter_frame_monitor_size();
   int stack_words         = is_top_frame ? max_stack : tempcount;
   int callee_extra_locals = callee_locals - callee_param_count;
   return header_words + monitor_words + stack_words + callee_extra_locals;
 }
 void AbstractInterpreter::layout_activation(Method* method,
                                             int       tempcount,
                                             int       popframe_extra_args,
                                             int       moncount,
                                             int       caller_actual_parameters,
                                             int       callee_param_count,
                                             int       callee_locals,
                                             frame*    caller,
                                             frame*    interpreter_frame,
                                             bool      is_top_frame,
                                             bool      is_bottom_frame) {
   assert(popframe_extra_args == 0, "what to do?");
   assert(!is_top_frame || (!callee_locals && !callee_param_count),
          "top frame should have no caller");
   // This code must exactly match what InterpreterFrame::build
   // does (the full InterpreterFrame::build, that is, not the
   // one that creates empty frames for the deoptimizer).
   //
   // interpreter_frame will be filled in.  It's size is determined by
   // a previous call to the size_activation() method,
   //
   // Note that tempcount is the current size of the expression
   // stack.  For top most frames we will allocate a full sized
   // expression stack and not the trimmed version that non-top
   // frames have.
   int monitor_words       = moncount * frame::interpreter_frame_monitor_size();
   intptr_t *locals        = interpreter_frame->fp() + method->max_locals();
   interpreterState istate = interpreter_frame->get_interpreterState();
   intptr_t *monitor_base  = (intptr_t*) istate;
   intptr_t *stack_base    = monitor_base - monitor_words;
   intptr_t *stack         = stack_base - tempcount - 1;
   BytecodeInterpreter::layout_interpreterState(istate,
                                                caller,
                                                NULL,
                                                method,
                                                locals,
                                                stack,
                                                stack_base,
                                                monitor_base,
                                                NULL,
                                                is_top_frame);
 }
 void BytecodeInterpreter::layout_interpreterState(interpreterState istate,
                                                   frame*    caller,
                                                   frame*    current,
                                                   Method* method,
                                                   intptr_t* locals,
                                                   intptr_t* stack,
                                                   intptr_t* stack_base,
                                                   intptr_t* monitor_base,
                                                   intptr_t* frame_bottom,
                                                   bool      is_top_frame) {
   istate->set_locals(locals);
   istate->set_method(method);
   istate->set_self_link(istate);
   istate->set_prev_link(NULL);
   // thread will be set by a hacky repurposing of frame::patch_pc()
   // bcp will be set by vframeArrayElement::unpack_on_stack()
   istate->set_constants(method->constants()->cache());
   istate->set_msg(BytecodeInterpreter::method_resume);
   istate->set_bcp_advance(0);
   istate->set_oop_temp(NULL);
   istate->set_mdx(NULL);
   if (caller->is_interpreted_frame()) {
     interpreterState prev = caller->get_interpreterState();
     prev->set_callee(method);
     if (*prev->bcp() == Bytecodes::_invokeinterface)
       prev->set_bcp_advance(5);
     else
       prev->set_bcp_advance(3);
   }
   istate->set_callee(NULL);
   istate->set_monitor_base((BasicObjectLock *) monitor_base);
   istate->set_stack_base(stack_base);
   istate->set_stack(stack);
   istate->set_stack_limit(stack_base - method->max_stack() - 1);
 }
 address CppInterpreter::return_entry(TosState state, int length, Bytecodes::Code code) {
   ShouldNotCallThis();
   return NULL;
 }
 address CppInterpreter::deopt_entry(TosState state, int length) {
   return NULL;
 }
 // Helper for (runtime) stack overflow checks
 int AbstractInterpreter::size_top_interpreter_activation(Method* method) {
   return 0;
 }
 // Helper for figuring out if frames are interpreter frames
 bool CppInterpreter::contains(address pc) {
   return false; // make frame::print_value_on work
 }
 // Result handlers and convertors
 address CppInterpreterGenerator::generate_result_handler_for(
     BasicType type) {
   assembler()->advance(1);
   return ShouldNotCallThisStub();
 }
 address CppInterpreterGenerator::generate_tosca_to_stack_converter(
     BasicType type) {
   assembler()->advance(1);
   return ShouldNotCallThisStub();
 }
 address CppInterpreterGenerator::generate_stack_to_stack_converter(
     BasicType type) {
   assembler()->advance(1);
   return ShouldNotCallThisStub();
 }
 address CppInterpreterGenerator::generate_stack_to_native_abi_converter(
     BasicType type) {
   assembler()->advance(1);
   return ShouldNotCallThisStub();
 }
 #endif // CC_INTERP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/cpu/zero/vm/cppInterpreter_zero.cpp@04d83ba48607 (annotated)

src/cpu/zero/vm/cppInterpreter_zero.cpp