--- /dev/null 2015-12-21 13:23:27.979393335 -0500 +++ new/src/cpu/zero/vm/abstractInterpreter_zero.cpp 2016-01-04 13:47:11.233866755 -0500 @@ -0,0 +1,124 @@ +/* + * Copyright (c) 2003, 2015, 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 "interpreter/bytecodeInterpreter.hpp" +#include "interpreter/cppInterpreter.hpp" +#include "runtime/frame.inline.hpp" +#include "utilities/globalDefinitions.hpp" + +bool AbstractInterpreter::can_be_compiled(methodHandle m) { + return true; +} + +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; +} + +// Deoptimization helpers + +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); +} + +// Helper for (runtime) stack overflow checks + +int AbstractInterpreter::size_top_interpreter_activation(Method* method) { + return 0; +}