Mercurial > hg > truffle
view src/cpu/x86/vm/interpreter_x86.hpp @ 1213:6deeaebad47a
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
Summary: Rename can_post_exceptions support to can_post_on_exceptions. Add support for should_post_on_exceptions flag to permit per JavaThread optimizations.
Reviewed-by: never, kvn, dcubed
Contributed-by: tom.deneau@amd.com
author | dcubed |
---|---|
date | Mon, 01 Feb 2010 17:35:05 -0700 |
parents | a61af66fc99e |
children | 2338d41fbd81 |
line wrap: on
line source
/* * Copyright 1997-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ public: // Sentinel placed in the code for interpreter returns so // that i2c adapters and osr code can recognize an interpreter // return address and convert the return to a specialized // block of code to handle compiedl return values and cleaning // the fpu stack. static const int return_sentinel; static Address::ScaleFactor stackElementScale() { return TaggedStackInterpreter? Address::times_8 : Address::times_4; } // Offset from rsp (which points to the last stack element) static int expr_offset_in_bytes(int i) { return stackElementSize()*i ; } static int expr_tag_offset_in_bytes(int i) { assert(TaggedStackInterpreter, "should not call this"); return expr_offset_in_bytes(i) + wordSize; } // Support for Tagged Stacks // Stack index relative to tos (which points at value) static int expr_index_at(int i) { return stackElementWords() * i; } static int expr_tag_index_at(int i) { assert(TaggedStackInterpreter, "should not call this"); // tag is one word above java stack element return stackElementWords() * i + 1; } // Already negated by c++ interpreter static int local_index_at(int i) { assert(i<=0, "local direction already negated"); return stackElementWords() * i + (value_offset_in_bytes()/wordSize); } static int local_tag_index_at(int i) { assert(i<=0, "local direction already negated"); assert(TaggedStackInterpreter, "should not call this"); return stackElementWords() * i + (tag_offset_in_bytes()/wordSize); }