aoqi@0: /*
kevinw@8368:  * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * Copyright 2007, 2008, 2009, 2010, 2011 Red Hat, Inc.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: #include "precompiled.hpp"
aoqi@0: #include "asm/assembler.hpp"
aoqi@0: #include "interpreter/bytecodeHistogram.hpp"
aoqi@0: #include "interpreter/cppInterpreter.hpp"
aoqi@0: #include "interpreter/interpreter.hpp"
aoqi@0: #include "interpreter/interpreterGenerator.hpp"
aoqi@0: #include "interpreter/interpreterRuntime.hpp"
aoqi@0: #include "oops/arrayOop.hpp"
aoqi@0: #include "oops/methodData.hpp"
aoqi@0: #include "oops/method.hpp"
aoqi@0: #include "oops/oop.inline.hpp"
aoqi@0: #include "prims/jvmtiExport.hpp"
aoqi@0: #include "prims/jvmtiThreadState.hpp"
aoqi@0: #include "runtime/arguments.hpp"
aoqi@0: #include "runtime/deoptimization.hpp"
aoqi@0: #include "runtime/frame.inline.hpp"
aoqi@0: #include "runtime/interfaceSupport.hpp"
goetz@6911: #include "runtime/orderAccess.inline.hpp"
aoqi@0: #include "runtime/sharedRuntime.hpp"
aoqi@0: #include "runtime/stubRoutines.hpp"
aoqi@0: #include "runtime/synchronizer.hpp"
aoqi@0: #include "runtime/timer.hpp"
aoqi@0: #include "runtime/vframeArray.hpp"
aoqi@0: #include "stack_zero.inline.hpp"
aoqi@0: #include "utilities/debug.hpp"
aoqi@0: #include "utilities/macros.hpp"
aoqi@0: #ifdef SHARK
aoqi@0: #include "shark/shark_globals.hpp"
aoqi@0: #endif
aoqi@0: 
aoqi@0: #ifdef CC_INTERP
aoqi@0: 
aoqi@0: #define fixup_after_potential_safepoint()       \
aoqi@0:   method = istate->method()
aoqi@0: 
aoqi@0: #define CALL_VM_NOCHECK_NOFIX(func)             \
aoqi@0:   thread->set_last_Java_frame();                \
aoqi@0:   func;                                         \
aoqi@0:   thread->reset_last_Java_frame();
aoqi@0: 
aoqi@0: #define CALL_VM_NOCHECK(func)                   \
aoqi@0:   CALL_VM_NOCHECK_NOFIX(func)                   \
aoqi@0:   fixup_after_potential_safepoint()
aoqi@0: 
aoqi@0: int CppInterpreter::normal_entry(Method* method, intptr_t UNUSED, TRAPS) {
aoqi@0:   JavaThread *thread = (JavaThread *) THREAD;
aoqi@0: 
aoqi@0:   // Allocate and initialize our frame.
aoqi@0:   InterpreterFrame *frame = InterpreterFrame::build(method, CHECK_0);
aoqi@0:   thread->push_zero_frame(frame);
aoqi@0: 
aoqi@0:   // Execute those bytecodes!
aoqi@0:   main_loop(0, THREAD);
aoqi@0: 
aoqi@0:   // No deoptimized frames on the stack
aoqi@0:   return 0;
aoqi@0: }
aoqi@0: 
kevinw@8368: intptr_t narrow(BasicType type, intptr_t result) {
kevinw@8368:   // mask integer result to narrower return type.
kevinw@8368:   switch (type) {
kevinw@8368:     case T_BOOLEAN:
kevinw@8368:       return result&1;
kevinw@8368:     case T_BYTE:
kevinw@8368:       return (intptr_t)(jbyte)result;
kevinw@8368:     case T_CHAR:
kevinw@8368:       return (intptr_t)(uintptr_t)(jchar)result;
kevinw@8368:     case T_SHORT:
kevinw@8368:       return (intptr_t)(jshort)result;
kevinw@8368:     case T_OBJECT:  // nothing to do fall through
kevinw@8402:     case T_ARRAY:
kevinw@8368:     case T_LONG:
kevinw@8368:     case T_INT:
kevinw@8368:     case T_FLOAT:
kevinw@8368:     case T_DOUBLE:
kevinw@8368:     case T_VOID:
kevinw@8368:       return result;
kevinw@8368:     default  : ShouldNotReachHere();
kevinw@8368:   }
kevinw@8368: }
kevinw@8368: 
kevinw@8368: 
aoqi@0: void CppInterpreter::main_loop(int recurse, TRAPS) {
aoqi@0:   JavaThread *thread = (JavaThread *) THREAD;
aoqi@0:   ZeroStack *stack = thread->zero_stack();
aoqi@0: 
aoqi@0:   // If we are entering from a deopt we may need to call
aoqi@0:   // ourself a few times in order to get to our frame.
aoqi@0:   if (recurse)
aoqi@0:     main_loop(recurse - 1, THREAD);
aoqi@0: 
aoqi@0:   InterpreterFrame *frame = thread->top_zero_frame()->as_interpreter_frame();
aoqi@0:   interpreterState istate = frame->interpreter_state();
aoqi@0:   Method* method = istate->method();
aoqi@0: 
aoqi@0:   intptr_t *result = NULL;
aoqi@0:   int result_slots = 0;
aoqi@0: 
aoqi@0:   while (true) {
aoqi@0:     // We can set up the frame anchor with everything we want at
aoqi@0:     // this point as we are thread_in_Java and no safepoints can
aoqi@0:     // occur until we go to vm mode.  We do have to clear flags
aoqi@0:     // on return from vm but that is it.
aoqi@0:     thread->set_last_Java_frame();
aoqi@0: 
aoqi@0:     // Call the interpreter
aoqi@0:     if (JvmtiExport::can_post_interpreter_events())
aoqi@0:       BytecodeInterpreter::runWithChecks(istate);
aoqi@0:     else
aoqi@0:       BytecodeInterpreter::run(istate);
aoqi@0:     fixup_after_potential_safepoint();
aoqi@0: 
aoqi@0:     // Clear the frame anchor
aoqi@0:     thread->reset_last_Java_frame();
aoqi@0: 
aoqi@0:     // Examine the message from the interpreter to decide what to do
aoqi@0:     if (istate->msg() == BytecodeInterpreter::call_method) {
aoqi@0:       Method* callee = istate->callee();
aoqi@0: 
aoqi@0:       // Trim back the stack to put the parameters at the top
aoqi@0:       stack->set_sp(istate->stack() + 1);
aoqi@0: 
aoqi@0:       // Make the call
aoqi@0:       Interpreter::invoke_method(callee, istate->callee_entry_point(), THREAD);
aoqi@0:       fixup_after_potential_safepoint();
aoqi@0: 
aoqi@0:       // Convert the result
aoqi@0:       istate->set_stack(stack->sp() - 1);
aoqi@0: 
aoqi@0:       // Restore the stack
aoqi@0:       stack->set_sp(istate->stack_limit() + 1);
aoqi@0: 
aoqi@0:       // Resume the interpreter
aoqi@0:       istate->set_msg(BytecodeInterpreter::method_resume);
aoqi@0:     }
aoqi@0:     else if (istate->msg() == BytecodeInterpreter::more_monitors) {
aoqi@0:       int monitor_words = frame::interpreter_frame_monitor_size();
aoqi@0: 
aoqi@0:       // Allocate the space
aoqi@0:       stack->overflow_check(monitor_words, THREAD);
aoqi@0:       if (HAS_PENDING_EXCEPTION)
aoqi@0:         break;
aoqi@0:       stack->alloc(monitor_words * wordSize);
aoqi@0: 
aoqi@0:       // Move the expression stack contents
aoqi@0:       for (intptr_t *p = istate->stack() + 1; p < istate->stack_base(); p++)
aoqi@0:         *(p - monitor_words) = *p;
aoqi@0: 
aoqi@0:       // Move the expression stack pointers
aoqi@0:       istate->set_stack_limit(istate->stack_limit() - monitor_words);
aoqi@0:       istate->set_stack(istate->stack() - monitor_words);
aoqi@0:       istate->set_stack_base(istate->stack_base() - monitor_words);
aoqi@0: 
aoqi@0:       // Zero the new monitor so the interpreter can find it.
aoqi@0:       ((BasicObjectLock *) istate->stack_base())->set_obj(NULL);
aoqi@0: 
aoqi@0:       // Resume the interpreter
aoqi@0:       istate->set_msg(BytecodeInterpreter::got_monitors);
aoqi@0:     }
aoqi@0:     else if (istate->msg() == BytecodeInterpreter::return_from_method) {
aoqi@0:       // Copy the result into the caller's frame
kevinw@8402:       result_slots = type2size[method->result_type()];
aoqi@0:       assert(result_slots >= 0 && result_slots <= 2, "what?");
aoqi@0:       result = istate->stack() + result_slots;
aoqi@0:       break;
aoqi@0:     }
aoqi@0:     else if (istate->msg() == BytecodeInterpreter::throwing_exception) {
aoqi@0:       assert(HAS_PENDING_EXCEPTION, "should do");
aoqi@0:       break;
aoqi@0:     }
aoqi@0:     else if (istate->msg() == BytecodeInterpreter::do_osr) {
aoqi@0:       // Unwind the current frame
aoqi@0:       thread->pop_zero_frame();
aoqi@0: 
aoqi@0:       // Remove any extension of the previous frame
aoqi@0:       int extra_locals = method->max_locals() - method->size_of_parameters();
aoqi@0:       stack->set_sp(stack->sp() + extra_locals);
aoqi@0: 
aoqi@0:       // Jump into the OSR method
aoqi@0:       Interpreter::invoke_osr(
aoqi@0:         method, istate->osr_entry(), istate->osr_buf(), THREAD);
aoqi@0:       return;
aoqi@0:     }
aoqi@0:     else {
aoqi@0:       ShouldNotReachHere();
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Unwind the current frame
aoqi@0:   thread->pop_zero_frame();
aoqi@0: 
aoqi@0:   // Pop our local variables
aoqi@0:   stack->set_sp(stack->sp() + method->max_locals());
aoqi@0: 
aoqi@0:   // Push our result
kevinw@8368:   for (int i = 0; i < result_slots; i++) {
kevinw@8368:     // Adjust result to smaller
aph@8429:     union {
aph@8429:       intptr_t res;
aph@8429:       jint res_jint;
aph@8429:     };
aph@8429:     res = result[-i];
kevinw@8368:     if (result_slots == 1) {
aph@8429:       BasicType t = method->result_type();
aph@8429:       if (is_subword_type(t)) {
aph@8429:         res_jint = (jint)narrow(t, res_jint);
aph@8429:       }
kevinw@8368:     }
kevinw@8368:     stack->push(res);
kevinw@8368:   }
aoqi@0: }
aoqi@0: 
aoqi@0: int CppInterpreter::native_entry(Method* method, intptr_t UNUSED, TRAPS) {
aoqi@0:   // Make sure method is native and not abstract
aoqi@0:   assert(method->is_native() && !method->is_abstract(), "should be");
aoqi@0: 
aoqi@0:   JavaThread *thread = (JavaThread *) THREAD;
aoqi@0:   ZeroStack *stack = thread->zero_stack();
aoqi@0: 
aoqi@0:   // Allocate and initialize our frame
aoqi@0:   InterpreterFrame *frame = InterpreterFrame::build(method, CHECK_0);
aoqi@0:   thread->push_zero_frame(frame);
aoqi@0:   interpreterState istate = frame->interpreter_state();
aoqi@0:   intptr_t *locals = istate->locals();
aoqi@0: 
aoqi@0:   // Update the invocation counter
aoqi@0:   if ((UseCompiler || CountCompiledCalls) && !method->is_synchronized()) {
aoqi@0:     MethodCounters* mcs = method->method_counters();
aoqi@0:     if (mcs == NULL) {
aoqi@0:       CALL_VM_NOCHECK(mcs = InterpreterRuntime::build_method_counters(thread, method));
aoqi@0:       if (HAS_PENDING_EXCEPTION)
aoqi@0:         goto unwind_and_return;
aoqi@0:     }
aoqi@0:     InvocationCounter *counter = mcs->invocation_counter();
aoqi@0:     counter->increment();
aoqi@0:     if (counter->reached_InvocationLimit(mcs->backedge_counter())) {
aoqi@0:       CALL_VM_NOCHECK(
aoqi@0:         InterpreterRuntime::frequency_counter_overflow(thread, NULL));
aoqi@0:       if (HAS_PENDING_EXCEPTION)
aoqi@0:         goto unwind_and_return;
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Lock if necessary
aoqi@0:   BasicObjectLock *monitor;
aoqi@0:   monitor = NULL;
aoqi@0:   if (method->is_synchronized()) {
aoqi@0:     monitor = (BasicObjectLock*) istate->stack_base();
aoqi@0:     oop lockee = monitor->obj();
aoqi@0:     markOop disp = lockee->mark()->set_unlocked();
aoqi@0: 
aoqi@0:     monitor->lock()->set_displaced_header(disp);
aoqi@0:     if (Atomic::cmpxchg_ptr(monitor, lockee->mark_addr(), disp) != disp) {
aoqi@0:       if (thread->is_lock_owned((address) disp->clear_lock_bits())) {
aoqi@0:         monitor->lock()->set_displaced_header(NULL);
aoqi@0:       }
aoqi@0:       else {
aoqi@0:         CALL_VM_NOCHECK(InterpreterRuntime::monitorenter(thread, monitor));
aoqi@0:         if (HAS_PENDING_EXCEPTION)
aoqi@0:           goto unwind_and_return;
aoqi@0:       }
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Get the signature handler
aoqi@0:   InterpreterRuntime::SignatureHandler *handler; {
aoqi@0:     address handlerAddr = method->signature_handler();
aoqi@0:     if (handlerAddr == NULL) {
aoqi@0:       CALL_VM_NOCHECK(InterpreterRuntime::prepare_native_call(thread, method));
aoqi@0:       if (HAS_PENDING_EXCEPTION)
aoqi@0:         goto unlock_unwind_and_return;
aoqi@0: 
aoqi@0:       handlerAddr = method->signature_handler();
aoqi@0:       assert(handlerAddr != NULL, "eh?");
aoqi@0:     }
aoqi@0:     if (handlerAddr == (address) InterpreterRuntime::slow_signature_handler) {
aoqi@0:       CALL_VM_NOCHECK(handlerAddr =
aoqi@0:         InterpreterRuntime::slow_signature_handler(thread, method, NULL,NULL));
aoqi@0:       if (HAS_PENDING_EXCEPTION)
aoqi@0:         goto unlock_unwind_and_return;
aoqi@0:     }
aoqi@0:     handler = \
aoqi@0:       InterpreterRuntime::SignatureHandler::from_handlerAddr(handlerAddr);
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Get the native function entry point
aoqi@0:   address function;
aoqi@0:   function = method->native_function();
aoqi@0:   assert(function != NULL, "should be set if signature handler is");
aoqi@0: 
aoqi@0:   // Build the argument list
aoqi@0:   stack->overflow_check(handler->argument_count() * 2, THREAD);
aoqi@0:   if (HAS_PENDING_EXCEPTION)
aoqi@0:     goto unlock_unwind_and_return;
aoqi@0: 
aoqi@0:   void **arguments;
aoqi@0:   void *mirror; {
aoqi@0:     arguments =
aoqi@0:       (void **) stack->alloc(handler->argument_count() * sizeof(void **));
aoqi@0:     void **dst = arguments;
aoqi@0: 
aoqi@0:     void *env = thread->jni_environment();
aoqi@0:     *(dst++) = &env;
aoqi@0: 
aoqi@0:     if (method->is_static()) {
aoqi@0:       istate->set_oop_temp(
aoqi@0:         method->constants()->pool_holder()->java_mirror());
aoqi@0:       mirror = istate->oop_temp_addr();
aoqi@0:       *(dst++) = &mirror;
aoqi@0:     }
aoqi@0: 
aoqi@0:     intptr_t *src = locals;
aoqi@0:     for (int i = dst - arguments; i < handler->argument_count(); i++) {
aoqi@0:       ffi_type *type = handler->argument_type(i);
aoqi@0:       if (type == &ffi_type_pointer) {
aoqi@0:         if (*src) {
aoqi@0:           stack->push((intptr_t) src);
aoqi@0:           *(dst++) = stack->sp();
aoqi@0:         }
aoqi@0:         else {
aoqi@0:           *(dst++) = src;
aoqi@0:         }
aoqi@0:         src--;
aoqi@0:       }
aoqi@0:       else if (type->size == 4) {
aoqi@0:         *(dst++) = src--;
aoqi@0:       }
aoqi@0:       else if (type->size == 8) {
aoqi@0:         src--;
aoqi@0:         *(dst++) = src--;
aoqi@0:       }
aoqi@0:       else {
aoqi@0:         ShouldNotReachHere();
aoqi@0:       }
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Set up the Java frame anchor
aoqi@0:   thread->set_last_Java_frame();
aoqi@0: 
aoqi@0:   // Change the thread state to _thread_in_native
aoqi@0:   ThreadStateTransition::transition_from_java(thread, _thread_in_native);
aoqi@0: 
aoqi@0:   // Make the call
aoqi@0:   intptr_t result[4 - LogBytesPerWord];
aoqi@0:   ffi_call(handler->cif(), (void (*)()) function, result, arguments);
aoqi@0: 
aoqi@0:   // Change the thread state back to _thread_in_Java.
aoqi@0:   // ThreadStateTransition::transition_from_native() cannot be used
aoqi@0:   // here because it does not check for asynchronous exceptions.
aoqi@0:   // We have to manage the transition ourself.
aoqi@0:   thread->set_thread_state(_thread_in_native_trans);
aoqi@0: 
aoqi@0:   // Make sure new state is visible in the GC thread
aoqi@0:   if (os::is_MP()) {
aoqi@0:     if (UseMembar) {
aoqi@0:       OrderAccess::fence();
aoqi@0:     }
aoqi@0:     else {
aoqi@0:       InterfaceSupport::serialize_memory(thread);
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Handle safepoint operations, pending suspend requests,
aoqi@0:   // and pending asynchronous exceptions.
aoqi@0:   if (SafepointSynchronize::do_call_back() ||
aoqi@0:       thread->has_special_condition_for_native_trans()) {
aoqi@0:     JavaThread::check_special_condition_for_native_trans(thread);
aoqi@0:     CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops());
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Finally we can change the thread state to _thread_in_Java.
aoqi@0:   thread->set_thread_state(_thread_in_Java);
aoqi@0:   fixup_after_potential_safepoint();
aoqi@0: 
aoqi@0:   // Clear the frame anchor
aoqi@0:   thread->reset_last_Java_frame();
aoqi@0: 
aoqi@0:   // If the result was an oop then unbox it and store it in
aoqi@0:   // oop_temp where the garbage collector can see it before
aoqi@0:   // we release the handle it might be protected by.
aoqi@0:   if (handler->result_type() == &ffi_type_pointer) {
aoqi@0:     if (result[0])
aoqi@0:       istate->set_oop_temp(*(oop *) result[0]);
aoqi@0:     else
aoqi@0:       istate->set_oop_temp(NULL);
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Reset handle block
aoqi@0:   thread->active_handles()->clear();
aoqi@0: 
aoqi@0:  unlock_unwind_and_return:
aoqi@0: 
aoqi@0:   // Unlock if necessary
aoqi@0:   if (monitor) {
aoqi@0:     BasicLock *lock = monitor->lock();
aoqi@0:     markOop header = lock->displaced_header();
aoqi@0:     oop rcvr = monitor->obj();
aoqi@0:     monitor->set_obj(NULL);
aoqi@0: 
aoqi@0:     if (header != NULL) {
aoqi@0:       if (Atomic::cmpxchg_ptr(header, rcvr->mark_addr(), lock) != lock) {
aoqi@0:         monitor->set_obj(rcvr); {
aoqi@0:           HandleMark hm(thread);
aoqi@0:           CALL_VM_NOCHECK(InterpreterRuntime::monitorexit(thread, monitor));
aoqi@0:         }
aoqi@0:       }
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:  unwind_and_return:
aoqi@0: 
aoqi@0:   // Unwind the current activation
aoqi@0:   thread->pop_zero_frame();
aoqi@0: 
aoqi@0:   // Pop our parameters
aoqi@0:   stack->set_sp(stack->sp() + method->size_of_parameters());
aoqi@0: 
aoqi@0:   // Push our result
aoqi@0:   if (!HAS_PENDING_EXCEPTION) {
kevinw@8402:     BasicType type = method->result_type();
aoqi@0:     stack->set_sp(stack->sp() - type2size[type]);
aoqi@0: 
aoqi@0:     switch (type) {
aoqi@0:     case T_VOID:
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case T_BOOLEAN:
aoqi@0: #ifndef VM_LITTLE_ENDIAN
aoqi@0:       result[0] <<= (BitsPerWord - BitsPerByte);
aoqi@0: #endif
aoqi@0:       SET_LOCALS_INT(*(jboolean *) result != 0, 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case T_CHAR:
aoqi@0: #ifndef VM_LITTLE_ENDIAN
aoqi@0:       result[0] <<= (BitsPerWord - BitsPerShort);
aoqi@0: #endif
aoqi@0:       SET_LOCALS_INT(*(jchar *) result, 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case T_BYTE:
aoqi@0: #ifndef VM_LITTLE_ENDIAN
aoqi@0:       result[0] <<= (BitsPerWord - BitsPerByte);
aoqi@0: #endif
aoqi@0:       SET_LOCALS_INT(*(jbyte *) result, 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case T_SHORT:
aoqi@0: #ifndef VM_LITTLE_ENDIAN
aoqi@0:       result[0] <<= (BitsPerWord - BitsPerShort);
aoqi@0: #endif
aoqi@0:       SET_LOCALS_INT(*(jshort *) result, 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case T_INT:
aoqi@0: #ifndef VM_LITTLE_ENDIAN
aoqi@0:       result[0] <<= (BitsPerWord - BitsPerInt);
aoqi@0: #endif
aoqi@0:       SET_LOCALS_INT(*(jint *) result, 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case T_LONG:
aoqi@0:       SET_LOCALS_LONG(*(jlong *) result, 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case T_FLOAT:
aoqi@0:       SET_LOCALS_FLOAT(*(jfloat *) result, 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case T_DOUBLE:
aoqi@0:       SET_LOCALS_DOUBLE(*(jdouble *) result, 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case T_OBJECT:
aoqi@0:     case T_ARRAY:
aoqi@0:       SET_LOCALS_OBJECT(istate->oop_temp(), 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     default:
aoqi@0:       ShouldNotReachHere();
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   // No deoptimized frames on the stack
aoqi@0:   return 0;
aoqi@0: }
aoqi@0: 
aoqi@0: int CppInterpreter::accessor_entry(Method* method, intptr_t UNUSED, TRAPS) {
aoqi@0:   JavaThread *thread = (JavaThread *) THREAD;
aoqi@0:   ZeroStack *stack = thread->zero_stack();
aoqi@0:   intptr_t *locals = stack->sp();
aoqi@0: 
aoqi@0:   // Drop into the slow path if we need a safepoint check
aoqi@0:   if (SafepointSynchronize::do_call_back()) {
aoqi@0:     return normal_entry(method, 0, THREAD);
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Load the object pointer and drop into the slow path
aoqi@0:   // if we have a NullPointerException
aoqi@0:   oop object = LOCALS_OBJECT(0);
aoqi@0:   if (object == NULL) {
aoqi@0:     return normal_entry(method, 0, THREAD);
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Read the field index from the bytecode, which looks like this:
aoqi@0:   //  0:  aload_0
aoqi@0:   //  1:  getfield
aoqi@0:   //  2:    index
aoqi@0:   //  3:    index
aoqi@0:   //  4:  ireturn/areturn
aoqi@0:   // NB this is not raw bytecode: index is in machine order
aoqi@0:   u1 *code = method->code_base();
aoqi@0:   assert(code[0] == Bytecodes::_aload_0 &&
aoqi@0:          code[1] == Bytecodes::_getfield &&
aoqi@0:          (code[4] == Bytecodes::_ireturn ||
aoqi@0:           code[4] == Bytecodes::_areturn), "should do");
aoqi@0:   u2 index = Bytes::get_native_u2(&code[2]);
aoqi@0: 
aoqi@0:   // Get the entry from the constant pool cache, and drop into
aoqi@0:   // the slow path if it has not been resolved
aoqi@0:   ConstantPoolCache* cache = method->constants()->cache();
aoqi@0:   ConstantPoolCacheEntry* entry = cache->entry_at(index);
aoqi@0:   if (!entry->is_resolved(Bytecodes::_getfield)) {
aoqi@0:     return normal_entry(method, 0, THREAD);
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Get the result and push it onto the stack
aoqi@0:   switch (entry->flag_state()) {
aoqi@0:   case ltos:
aoqi@0:   case dtos:
aoqi@0:     stack->overflow_check(1, CHECK_0);
aoqi@0:     stack->alloc(wordSize);
aoqi@0:     break;
aoqi@0:   }
aoqi@0:   if (entry->is_volatile()) {
aoqi@0:     switch (entry->flag_state()) {
aoqi@0:     case ctos:
aoqi@0:       SET_LOCALS_INT(object->char_field_acquire(entry->f2_as_index()), 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case btos:
kevinw@8368:     case ztos:
aoqi@0:       SET_LOCALS_INT(object->byte_field_acquire(entry->f2_as_index()), 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case stos:
aoqi@0:       SET_LOCALS_INT(object->short_field_acquire(entry->f2_as_index()), 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case itos:
aoqi@0:       SET_LOCALS_INT(object->int_field_acquire(entry->f2_as_index()), 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case ltos:
aoqi@0:       SET_LOCALS_LONG(object->long_field_acquire(entry->f2_as_index()), 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case ftos:
aoqi@0:       SET_LOCALS_FLOAT(object->float_field_acquire(entry->f2_as_index()), 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case dtos:
aoqi@0:       SET_LOCALS_DOUBLE(object->double_field_acquire(entry->f2_as_index()), 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case atos:
aoqi@0:       SET_LOCALS_OBJECT(object->obj_field_acquire(entry->f2_as_index()), 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     default:
aoqi@0:       ShouldNotReachHere();
aoqi@0:     }
aoqi@0:   }
aoqi@0:   else {
aoqi@0:     switch (entry->flag_state()) {
aoqi@0:     case ctos:
aoqi@0:       SET_LOCALS_INT(object->char_field(entry->f2_as_index()), 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case btos:
kevinw@8368:     case ztos:
aoqi@0:       SET_LOCALS_INT(object->byte_field(entry->f2_as_index()), 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case stos:
aoqi@0:       SET_LOCALS_INT(object->short_field(entry->f2_as_index()), 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case itos:
aoqi@0:       SET_LOCALS_INT(object->int_field(entry->f2_as_index()), 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case ltos:
aoqi@0:       SET_LOCALS_LONG(object->long_field(entry->f2_as_index()), 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case ftos:
aoqi@0:       SET_LOCALS_FLOAT(object->float_field(entry->f2_as_index()), 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case dtos:
aoqi@0:       SET_LOCALS_DOUBLE(object->double_field(entry->f2_as_index()), 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     case atos:
aoqi@0:       SET_LOCALS_OBJECT(object->obj_field(entry->f2_as_index()), 0);
aoqi@0:       break;
aoqi@0: 
aoqi@0:     default:
aoqi@0:       ShouldNotReachHere();
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   // No deoptimized frames on the stack
aoqi@0:   return 0;
aoqi@0: }
aoqi@0: 
aoqi@0: int CppInterpreter::empty_entry(Method* method, intptr_t UNUSED, TRAPS) {
aoqi@0:   JavaThread *thread = (JavaThread *) THREAD;
aoqi@0:   ZeroStack *stack = thread->zero_stack();
aoqi@0: 
aoqi@0:   // Drop into the slow path if we need a safepoint check
aoqi@0:   if (SafepointSynchronize::do_call_back()) {
aoqi@0:     return normal_entry(method, 0, THREAD);
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Pop our parameters
aoqi@0:   stack->set_sp(stack->sp() + method->size_of_parameters());
aoqi@0: 
aoqi@0:   // No deoptimized frames on the stack
aoqi@0:   return 0;
aoqi@0: }
aoqi@0: 
aoqi@0: // The new slots will be inserted before slot insert_before.
aoqi@0: // Slots < insert_before will have the same slot number after the insert.
aoqi@0: // Slots >= insert_before will become old_slot + num_slots.
aoqi@0: void CppInterpreter::insert_vmslots(int insert_before, int num_slots, TRAPS) {
aoqi@0:   JavaThread *thread = (JavaThread *) THREAD;
aoqi@0:   ZeroStack *stack = thread->zero_stack();
aoqi@0: 
aoqi@0:   // Allocate the space
aoqi@0:   stack->overflow_check(num_slots, CHECK);
aoqi@0:   stack->alloc(num_slots * wordSize);
aoqi@0:   intptr_t *vmslots = stack->sp();
aoqi@0: 
aoqi@0:   // Shuffle everything up
aoqi@0:   for (int i = 0; i < insert_before; i++)
aoqi@0:     SET_VMSLOTS_SLOT(VMSLOTS_SLOT(i + num_slots), i);
aoqi@0: }
aoqi@0: 
aoqi@0: void CppInterpreter::remove_vmslots(int first_slot, int num_slots, TRAPS) {
aoqi@0:   JavaThread *thread = (JavaThread *) THREAD;
aoqi@0:   ZeroStack *stack = thread->zero_stack();
aoqi@0:   intptr_t *vmslots = stack->sp();
aoqi@0: 
aoqi@0:   // Move everything down
aoqi@0:   for (int i = first_slot - 1; i >= 0; i--)
aoqi@0:     SET_VMSLOTS_SLOT(VMSLOTS_SLOT(i), i + num_slots);
aoqi@0: 
aoqi@0:   // Deallocate the space
aoqi@0:   stack->set_sp(stack->sp() + num_slots);
aoqi@0: }
aoqi@0: 
aoqi@0: BasicType CppInterpreter::result_type_of_handle(oop method_handle) {
aoqi@0:   oop method_type = java_lang_invoke_MethodHandle::type(method_handle);
aoqi@0:   oop return_type = java_lang_invoke_MethodType::rtype(method_type);
aoqi@0:   return java_lang_Class::as_BasicType(return_type, (Klass* *) NULL);
aoqi@0: }
aoqi@0: 
aoqi@0: intptr_t* CppInterpreter::calculate_unwind_sp(ZeroStack* stack,
aoqi@0:                                               oop method_handle) {
aoqi@0:   oop method_type = java_lang_invoke_MethodHandle::type(method_handle);
aoqi@0:   int argument_slots = java_lang_invoke_MethodType::ptype_slot_count(method_type);
aoqi@0: 
aoqi@0:   return stack->sp() + argument_slots;
aoqi@0: }
aoqi@0: 
aoqi@0: IRT_ENTRY(void, CppInterpreter::throw_exception(JavaThread* thread,
aoqi@0:                                                 Symbol*     name,
aoqi@0:                                                 char*       message))
aoqi@0:   THROW_MSG(name, message);
aoqi@0: IRT_END
aoqi@0: 
aoqi@0: InterpreterFrame *InterpreterFrame::build(Method* const method, TRAPS) {
aoqi@0:   JavaThread *thread = (JavaThread *) THREAD;
aoqi@0:   ZeroStack *stack = thread->zero_stack();
aoqi@0: 
aoqi@0:   // Calculate the size of the frame we'll build, including
aoqi@0:   // any adjustments to the caller's frame that we'll make.
aoqi@0:   int extra_locals  = 0;
aoqi@0:   int monitor_words = 0;
aoqi@0:   int stack_words   = 0;
aoqi@0: 
aoqi@0:   if (!method->is_native()) {
aoqi@0:     extra_locals = method->max_locals() - method->size_of_parameters();
aoqi@0:     stack_words  = method->max_stack();
aoqi@0:   }
aoqi@0:   if (method->is_synchronized()) {
aoqi@0:     monitor_words = frame::interpreter_frame_monitor_size();
aoqi@0:   }
aoqi@0:   stack->overflow_check(
aoqi@0:     extra_locals + header_words + monitor_words + stack_words, CHECK_NULL);
aoqi@0: 
aoqi@0:   // Adjust the caller's stack frame to accomodate any additional
aoqi@0:   // local variables we have contiguously with our parameters.
aoqi@0:   for (int i = 0; i < extra_locals; i++)
aoqi@0:     stack->push(0);
aoqi@0: 
aoqi@0:   intptr_t *locals;
aoqi@0:   if (method->is_native())
aoqi@0:     locals = stack->sp() + (method->size_of_parameters() - 1);
aoqi@0:   else
aoqi@0:     locals = stack->sp() + (method->max_locals() - 1);
aoqi@0: 
aoqi@0:   stack->push(0); // next_frame, filled in later
aoqi@0:   intptr_t *fp = stack->sp();
aoqi@0:   assert(fp - stack->sp() == next_frame_off, "should be");
aoqi@0: 
aoqi@0:   stack->push(INTERPRETER_FRAME);
aoqi@0:   assert(fp - stack->sp() == frame_type_off, "should be");
aoqi@0: 
aoqi@0:   interpreterState istate =
aoqi@0:     (interpreterState) stack->alloc(sizeof(BytecodeInterpreter));
aoqi@0:   assert(fp - stack->sp() == istate_off, "should be");
aoqi@0: 
aoqi@0:   istate->set_locals(locals);
aoqi@0:   istate->set_method(method);
aoqi@0:   istate->set_self_link(istate);
aoqi@0:   istate->set_prev_link(NULL);
aoqi@0:   istate->set_thread(thread);
aoqi@0:   istate->set_bcp(method->is_native() ? NULL : method->code_base());
aoqi@0:   istate->set_constants(method->constants()->cache());
aoqi@0:   istate->set_msg(BytecodeInterpreter::method_entry);
aoqi@0:   istate->set_oop_temp(NULL);
aoqi@0:   istate->set_mdx(NULL);
aoqi@0:   istate->set_callee(NULL);
aoqi@0: 
aoqi@0:   istate->set_monitor_base((BasicObjectLock *) stack->sp());
aoqi@0:   if (method->is_synchronized()) {
aoqi@0:     BasicObjectLock *monitor =
aoqi@0:       (BasicObjectLock *) stack->alloc(monitor_words * wordSize);
aoqi@0:     oop object;
aoqi@0:     if (method->is_static())
aoqi@0:       object = method->constants()->pool_holder()->java_mirror();
aoqi@0:     else
coleenp@7675:       object = (oop) (void*)locals[0];
aoqi@0:     monitor->set_obj(object);
aoqi@0:   }
aoqi@0: 
aoqi@0:   istate->set_stack_base(stack->sp());
aoqi@0:   istate->set_stack(stack->sp() - 1);
aoqi@0:   if (stack_words)
aoqi@0:     stack->alloc(stack_words * wordSize);
aoqi@0:   istate->set_stack_limit(stack->sp() - 1);
aoqi@0: 
aoqi@0:   return (InterpreterFrame *) fp;
aoqi@0: }
aoqi@0: 
aoqi@0: int AbstractInterpreter::BasicType_as_index(BasicType type) {
aoqi@0:   int i = 0;
aoqi@0:   switch (type) {
aoqi@0:     case T_BOOLEAN: i = 0; break;
aoqi@0:     case T_CHAR   : i = 1; break;
aoqi@0:     case T_BYTE   : i = 2; break;
aoqi@0:     case T_SHORT  : i = 3; break;
aoqi@0:     case T_INT    : i = 4; break;
aoqi@0:     case T_LONG   : i = 5; break;
aoqi@0:     case T_VOID   : i = 6; break;
aoqi@0:     case T_FLOAT  : i = 7; break;
aoqi@0:     case T_DOUBLE : i = 8; break;
aoqi@0:     case T_OBJECT : i = 9; break;
aoqi@0:     case T_ARRAY  : i = 9; break;
aoqi@0:     default       : ShouldNotReachHere();
aoqi@0:   }
aoqi@0:   assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers,
aoqi@0:          "index out of bounds");
aoqi@0:   return i;
aoqi@0: }
aoqi@0: 
aoqi@0: address InterpreterGenerator::generate_empty_entry() {
aoqi@0:   if (!UseFastEmptyMethods)
aoqi@0:     return NULL;
aoqi@0: 
aoqi@0:   return generate_entry((address) CppInterpreter::empty_entry);
aoqi@0: }
aoqi@0: 
aoqi@0: address InterpreterGenerator::generate_accessor_entry() {
aoqi@0:   if (!UseFastAccessorMethods)
aoqi@0:     return NULL;
aoqi@0: 
aoqi@0:   return generate_entry((address) CppInterpreter::accessor_entry);
aoqi@0: }
aoqi@0: 
aoqi@0: address InterpreterGenerator::generate_Reference_get_entry(void) {
aoqi@0: #if INCLUDE_ALL_GCS
aoqi@0:   if (UseG1GC) {
aoqi@0:     // We need to generate have a routine that generates code to:
aoqi@0:     //   * load the value in the referent field
aoqi@0:     //   * passes that value to the pre-barrier.
aoqi@0:     //
aoqi@0:     // In the case of G1 this will record the value of the
aoqi@0:     // referent in an SATB buffer if marking is active.
aoqi@0:     // This will cause concurrent marking to mark the referent
aoqi@0:     // field as live.
aoqi@0:     Unimplemented();
aoqi@0:   }
aoqi@0: #endif // INCLUDE_ALL_GCS
aoqi@0: 
aoqi@0:   // If G1 is not enabled then attempt to go through the accessor entry point
aoqi@0:   // Reference.get is an accessor
aoqi@0:   return generate_accessor_entry();
aoqi@0: }
aoqi@0: 
aoqi@0: address InterpreterGenerator::generate_native_entry(bool synchronized) {
aoqi@0:   assert(synchronized == false, "should be");
aoqi@0: 
aoqi@0:   return generate_entry((address) CppInterpreter::native_entry);
aoqi@0: }
aoqi@0: 
aoqi@0: address InterpreterGenerator::generate_normal_entry(bool synchronized) {
aoqi@0:   assert(synchronized == false, "should be");
aoqi@0: 
aoqi@0:   return generate_entry((address) CppInterpreter::normal_entry);
aoqi@0: }
aoqi@0: 
aoqi@0: address AbstractInterpreterGenerator::generate_method_entry(
aoqi@0:     AbstractInterpreter::MethodKind kind) {
aoqi@0:   address entry_point = NULL;
aoqi@0: 
aoqi@0:   switch (kind) {
aoqi@0:   case Interpreter::zerolocals:
aoqi@0:   case Interpreter::zerolocals_synchronized:
aoqi@0:     break;
aoqi@0: 
aoqi@0:   case Interpreter::native:
aoqi@0:     entry_point = ((InterpreterGenerator*) this)->generate_native_entry(false);
aoqi@0:     break;
aoqi@0: 
aoqi@0:   case Interpreter::native_synchronized:
aoqi@0:     entry_point = ((InterpreterGenerator*) this)->generate_native_entry(false);
aoqi@0:     break;
aoqi@0: 
aoqi@0:   case Interpreter::empty:
aoqi@0:     entry_point = ((InterpreterGenerator*) this)->generate_empty_entry();
aoqi@0:     break;
aoqi@0: 
aoqi@0:   case Interpreter::accessor:
aoqi@0:     entry_point = ((InterpreterGenerator*) this)->generate_accessor_entry();
aoqi@0:     break;
aoqi@0: 
aoqi@0:   case Interpreter::abstract:
aoqi@0:     entry_point = ((InterpreterGenerator*) this)->generate_abstract_entry();
aoqi@0:     break;
aoqi@0: 
aoqi@0:   case Interpreter::java_lang_math_sin:
aoqi@0:   case Interpreter::java_lang_math_cos:
aoqi@0:   case Interpreter::java_lang_math_tan:
aoqi@0:   case Interpreter::java_lang_math_abs:
aoqi@0:   case Interpreter::java_lang_math_log:
aoqi@0:   case Interpreter::java_lang_math_log10:
aoqi@0:   case Interpreter::java_lang_math_sqrt:
aoqi@0:   case Interpreter::java_lang_math_pow:
aoqi@0:   case Interpreter::java_lang_math_exp:
aoqi@0:     entry_point = ((InterpreterGenerator*) this)->generate_math_entry(kind);
aoqi@0:     break;
aoqi@0: 
aoqi@0:   case Interpreter::java_lang_ref_reference_get:
aoqi@0:     entry_point = ((InterpreterGenerator*)this)->generate_Reference_get_entry();
aoqi@0:     break;
aoqi@0: 
aoqi@0:   default:
aoqi@0:     ShouldNotReachHere();
aoqi@0:   }
aoqi@0: 
aoqi@0:   if (entry_point == NULL)
aoqi@0:     entry_point = ((InterpreterGenerator*) this)->generate_normal_entry(false);
aoqi@0: 
aoqi@0:   return entry_point;
aoqi@0: }
aoqi@0: 
aoqi@0: InterpreterGenerator::InterpreterGenerator(StubQueue* code)
aoqi@0:  : CppInterpreterGenerator(code) {
aoqi@0:    generate_all();
aoqi@0: }
aoqi@0: 
aoqi@0: // Deoptimization helpers
aoqi@0: 
aoqi@0: InterpreterFrame *InterpreterFrame::build(int size, TRAPS) {
aoqi@0:   ZeroStack *stack = ((JavaThread *) THREAD)->zero_stack();
aoqi@0: 
aoqi@0:   int size_in_words = size >> LogBytesPerWord;
aoqi@0:   assert(size_in_words * wordSize == size, "unaligned");
aoqi@0:   assert(size_in_words >= header_words, "too small");
aoqi@0:   stack->overflow_check(size_in_words, CHECK_NULL);
aoqi@0: 
aoqi@0:   stack->push(0); // next_frame, filled in later
aoqi@0:   intptr_t *fp = stack->sp();
aoqi@0:   assert(fp - stack->sp() == next_frame_off, "should be");
aoqi@0: 
aoqi@0:   stack->push(INTERPRETER_FRAME);
aoqi@0:   assert(fp - stack->sp() == frame_type_off, "should be");
aoqi@0: 
aoqi@0:   interpreterState istate =
aoqi@0:     (interpreterState) stack->alloc(sizeof(BytecodeInterpreter));
aoqi@0:   assert(fp - stack->sp() == istate_off, "should be");
aoqi@0:   istate->set_self_link(NULL); // mark invalid
aoqi@0: 
aoqi@0:   stack->alloc((size_in_words - header_words) * wordSize);
aoqi@0: 
aoqi@0:   return (InterpreterFrame *) fp;
aoqi@0: }
aoqi@0: 
aoqi@0: int AbstractInterpreter::size_activation(int       max_stack,
aoqi@0:                                          int       tempcount,
aoqi@0:                                          int       extra_args,
aoqi@0:                                          int       moncount,
aoqi@0:                                          int       callee_param_count,
aoqi@0:                                          int       callee_locals,
aoqi@0:                                          bool      is_top_frame) {
aoqi@0:   int header_words        = InterpreterFrame::header_words;
aoqi@0:   int monitor_words       = moncount * frame::interpreter_frame_monitor_size();
aoqi@0:   int stack_words         = is_top_frame ? max_stack : tempcount;
aoqi@0:   int callee_extra_locals = callee_locals - callee_param_count;
aoqi@0: 
aoqi@0:   return header_words + monitor_words + stack_words + callee_extra_locals;
aoqi@0: }
aoqi@0: 
aoqi@0: void AbstractInterpreter::layout_activation(Method* method,
aoqi@0:                                             int       tempcount,
aoqi@0:                                             int       popframe_extra_args,
aoqi@0:                                             int       moncount,
aoqi@0:                                             int       caller_actual_parameters,
aoqi@0:                                             int       callee_param_count,
aoqi@0:                                             int       callee_locals,
aoqi@0:                                             frame*    caller,
aoqi@0:                                             frame*    interpreter_frame,
aoqi@0:                                             bool      is_top_frame,
aoqi@0:                                             bool      is_bottom_frame) {
aoqi@0:   assert(popframe_extra_args == 0, "what to do?");
aoqi@0:   assert(!is_top_frame || (!callee_locals && !callee_param_count),
aoqi@0:          "top frame should have no caller");
aoqi@0: 
aoqi@0:   // This code must exactly match what InterpreterFrame::build
aoqi@0:   // does (the full InterpreterFrame::build, that is, not the
aoqi@0:   // one that creates empty frames for the deoptimizer).
aoqi@0:   //
aoqi@0:   // interpreter_frame will be filled in.  It's size is determined by
aoqi@0:   // a previous call to the size_activation() method,
aoqi@0:   //
aoqi@0:   // Note that tempcount is the current size of the expression
aoqi@0:   // stack.  For top most frames we will allocate a full sized
aoqi@0:   // expression stack and not the trimmed version that non-top
aoqi@0:   // frames have.
aoqi@0: 
aoqi@0:   int monitor_words       = moncount * frame::interpreter_frame_monitor_size();
aoqi@0:   intptr_t *locals        = interpreter_frame->fp() + method->max_locals();
aoqi@0:   interpreterState istate = interpreter_frame->get_interpreterState();
aoqi@0:   intptr_t *monitor_base  = (intptr_t*) istate;
aoqi@0:   intptr_t *stack_base    = monitor_base - monitor_words;
aoqi@0:   intptr_t *stack         = stack_base - tempcount - 1;
aoqi@0: 
aoqi@0:   BytecodeInterpreter::layout_interpreterState(istate,
aoqi@0:                                                caller,
aoqi@0:                                                NULL,
aoqi@0:                                                method,
aoqi@0:                                                locals,
aoqi@0:                                                stack,
aoqi@0:                                                stack_base,
aoqi@0:                                                monitor_base,
aoqi@0:                                                NULL,
aoqi@0:                                                is_top_frame);
aoqi@0: }
aoqi@0: 
aoqi@0: void BytecodeInterpreter::layout_interpreterState(interpreterState istate,
aoqi@0:                                                   frame*    caller,
aoqi@0:                                                   frame*    current,
aoqi@0:                                                   Method* method,
aoqi@0:                                                   intptr_t* locals,
aoqi@0:                                                   intptr_t* stack,
aoqi@0:                                                   intptr_t* stack_base,
aoqi@0:                                                   intptr_t* monitor_base,
aoqi@0:                                                   intptr_t* frame_bottom,
aoqi@0:                                                   bool      is_top_frame) {
aoqi@0:   istate->set_locals(locals);
aoqi@0:   istate->set_method(method);
aoqi@0:   istate->set_self_link(istate);
aoqi@0:   istate->set_prev_link(NULL);
aoqi@0:   // thread will be set by a hacky repurposing of frame::patch_pc()
aoqi@0:   // bcp will be set by vframeArrayElement::unpack_on_stack()
aoqi@0:   istate->set_constants(method->constants()->cache());
aoqi@0:   istate->set_msg(BytecodeInterpreter::method_resume);
aoqi@0:   istate->set_bcp_advance(0);
aoqi@0:   istate->set_oop_temp(NULL);
aoqi@0:   istate->set_mdx(NULL);
aoqi@0:   if (caller->is_interpreted_frame()) {
aoqi@0:     interpreterState prev = caller->get_interpreterState();
aoqi@0:     prev->set_callee(method);
aoqi@0:     if (*prev->bcp() == Bytecodes::_invokeinterface)
aoqi@0:       prev->set_bcp_advance(5);
aoqi@0:     else
aoqi@0:       prev->set_bcp_advance(3);
aoqi@0:   }
aoqi@0:   istate->set_callee(NULL);
aoqi@0:   istate->set_monitor_base((BasicObjectLock *) monitor_base);
aoqi@0:   istate->set_stack_base(stack_base);
aoqi@0:   istate->set_stack(stack);
aoqi@0:   istate->set_stack_limit(stack_base - method->max_stack() - 1);
aoqi@0: }
aoqi@0: 
aoqi@0: address CppInterpreter::return_entry(TosState state, int length, Bytecodes::Code code) {
aoqi@0:   ShouldNotCallThis();
aoqi@0:   return NULL;
aoqi@0: }
aoqi@0: 
aoqi@0: address CppInterpreter::deopt_entry(TosState state, int length) {
aoqi@0:   return NULL;
aoqi@0: }
aoqi@0: 
aoqi@0: // Helper for (runtime) stack overflow checks
aoqi@0: 
aoqi@0: int AbstractInterpreter::size_top_interpreter_activation(Method* method) {
aoqi@0:   return 0;
aoqi@0: }
aoqi@0: 
aoqi@0: // Helper for figuring out if frames are interpreter frames
aoqi@0: 
aoqi@0: bool CppInterpreter::contains(address pc) {
aoqi@0:   return false; // make frame::print_value_on work
aoqi@0: }
aoqi@0: 
aoqi@0: // Result handlers and convertors
aoqi@0: 
aoqi@0: address CppInterpreterGenerator::generate_result_handler_for(
aoqi@0:     BasicType type) {
aoqi@0:   assembler()->advance(1);
aoqi@0:   return ShouldNotCallThisStub();
aoqi@0: }
aoqi@0: 
aoqi@0: address CppInterpreterGenerator::generate_tosca_to_stack_converter(
aoqi@0:     BasicType type) {
aoqi@0:   assembler()->advance(1);
aoqi@0:   return ShouldNotCallThisStub();
aoqi@0: }
aoqi@0: 
aoqi@0: address CppInterpreterGenerator::generate_stack_to_stack_converter(
aoqi@0:     BasicType type) {
aoqi@0:   assembler()->advance(1);
aoqi@0:   return ShouldNotCallThisStub();
aoqi@0: }
aoqi@0: 
aoqi@0: address CppInterpreterGenerator::generate_stack_to_native_abi_converter(
aoqi@0:     BasicType type) {
aoqi@0:   assembler()->advance(1);
aoqi@0:   return ShouldNotCallThisStub();
aoqi@0: }
aoqi@0: 
aoqi@0: #endif // CC_INTERP