src/share/vm/code/location.cpp

Tue, 08 Aug 2017 15:57:29 +0800

author
aoqi
date
Tue, 08 Aug 2017 15:57:29 +0800
changeset 6876
710a3c8b516e
parent 2314
f95d63e2154a
parent 0
f90c822e73f8
permissions
-rw-r--r--

merge

aoqi@0 1 /*
aoqi@0 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
aoqi@0 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0 4 *
aoqi@0 5 * This code is free software; you can redistribute it and/or modify it
aoqi@0 6 * under the terms of the GNU General Public License version 2 only, as
aoqi@0 7 * published by the Free Software Foundation.
aoqi@0 8 *
aoqi@0 9 * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0 12 * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0 13 * accompanied this code).
aoqi@0 14 *
aoqi@0 15 * You should have received a copy of the GNU General Public License version
aoqi@0 16 * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0 18 *
aoqi@0 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0 20 * or visit www.oracle.com if you need additional information or have any
aoqi@0 21 * questions.
aoqi@0 22 *
aoqi@0 23 */
aoqi@0 24
aoqi@0 25 #include "precompiled.hpp"
aoqi@0 26 #include "code/debugInfo.hpp"
aoqi@0 27 #include "code/location.hpp"
aoqi@0 28
aoqi@0 29 void Location::print_on(outputStream* st) const {
aoqi@0 30 if(type() == invalid) {
aoqi@0 31 // product of Location::invalid_loc() or Location::Location().
aoqi@0 32 switch (where()) {
aoqi@0 33 case on_stack: st->print("empty"); break;
aoqi@0 34 case in_register: st->print("invalid"); break;
aoqi@0 35 }
aoqi@0 36 return;
aoqi@0 37 }
aoqi@0 38 switch (where()) {
aoqi@0 39 case on_stack: st->print("stack[%d]", stack_offset()); break;
aoqi@0 40 case in_register: st->print("reg %s [%d]", reg()->name(), register_number()); break;
aoqi@0 41 default: st->print("Wrong location where %d", where());
aoqi@0 42 }
aoqi@0 43 switch (type()) {
aoqi@0 44 case normal: break;
aoqi@0 45 case oop: st->print(",oop"); break;
aoqi@0 46 case narrowoop: st->print(",narrowoop"); break;
aoqi@0 47 case int_in_long: st->print(",int"); break;
aoqi@0 48 case lng: st->print(",long"); break;
aoqi@0 49 case float_in_dbl: st->print(",float"); break;
aoqi@0 50 case dbl: st->print(",double"); break;
aoqi@0 51 case addr: st->print(",address"); break;
aoqi@0 52 default: st->print("Wrong location type %d", type());
aoqi@0 53 }
aoqi@0 54 }
aoqi@0 55
aoqi@0 56
aoqi@0 57 Location::Location(DebugInfoReadStream* stream) {
aoqi@0 58 _value = (juint) stream->read_int();
aoqi@0 59 }
aoqi@0 60
aoqi@0 61
aoqi@0 62 void Location::write_on(DebugInfoWriteStream* stream) {
aoqi@0 63 stream->write_int(_value);
aoqi@0 64 }
aoqi@0 65
aoqi@0 66
aoqi@0 67 // Valid argument to Location::new_stk_loc()?
aoqi@0 68 bool Location::legal_offset_in_bytes(int offset_in_bytes) {
aoqi@0 69 if ((offset_in_bytes % BytesPerInt) != 0) return false;
aoqi@0 70 return (juint)(offset_in_bytes / BytesPerInt) < (OFFSET_MASK >> OFFSET_SHIFT);
aoqi@0 71 }

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