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J. Duke 2007-12-01 00:00:00 +00:00
parent 686d76f772
commit 8153779ad3
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69
hotspot/src/share/vm/code/location.cpp Normal file
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/*
* Copyright 1997-2006 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.
*
*/
#include "incls/_precompiled.incl"
#include "incls/_location.cpp.incl"
void Location::print_on(outputStream* st) const {
if(type() == invalid && !legal_offset_in_bytes(offset() * BytesPerInt)) {
// product of Location::invalid_loc() or Location::Location().
switch (where()) {
case on_stack: st->print("empty"); break;
case in_register: st->print("invalid"); break;
}
return;
}
switch (where()) {
case on_stack: st->print("stack[%d]", stack_offset()); break;
case in_register: st->print("reg %s [%d]", reg()->name(), register_number()); break;
default: st->print("Wrong location where %d", where());
}
switch (type()) {
case normal: break;
case oop: st->print(",oop"); break;
case int_in_long: st->print(",int"); break;
case lng: st->print(",long"); break;
case float_in_dbl: st->print(",float"); break;
case dbl: st->print(",double"); break;
case addr: st->print(",address"); break;
default: st->print("Wrong location type %d", type());
}
}
Location::Location(DebugInfoReadStream* stream) {
_value = (uint16_t) stream->read_int();
}
void Location::write_on(DebugInfoWriteStream* stream) {
stream->write_int(_value & 0x0000FFFF);
}
// Valid argument to Location::new_stk_loc()?
bool Location::legal_offset_in_bytes(int offset_in_bytes) {
if ((offset_in_bytes % BytesPerInt) != 0) return false;
return (offset_in_bytes / BytesPerInt) < (OFFSET_MASK >> OFFSET_SHIFT);
}