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comparison src/cpu/x86/vm/stubGenerator_x86_64.cpp @ 356:1ee8caae33af

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Merge
author tonyp
date Thu, 21 Aug 2008 23:36:31 -0400
parents 37f87013dfd8 910a4cb98e9e
children f8199438385b
comparison
equal deleted inserted replaced
355:0edda524b58c 356:1ee8caae33af
1 /* 1 /*
2 * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved. 2 * Copyright 2003-2008 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
1225 1225
1226 __ shrq(start, CardTableModRefBS::card_shift); 1226 __ shrq(start, CardTableModRefBS::card_shift);
1227 __ shrq(end, CardTableModRefBS::card_shift); 1227 __ shrq(end, CardTableModRefBS::card_shift);
1228 __ subq(end, start); // number of bytes to copy 1228 __ subq(end, start); // number of bytes to copy
1229 1229
1230 intptr_t disp = (intptr_t) ct->byte_map_base;
1231 if (__ is_simm32(disp)) {
1232 Address cardtable(noreg, noreg, Address::no_scale, disp);
1233 __ lea(scratch, cardtable);
1234 } else {
1235 ExternalAddress cardtable((address)disp);
1236 __ lea(scratch, cardtable);
1237 }
1238
1230 const Register count = end; // 'end' register contains bytes count now 1239 const Register count = end; // 'end' register contains bytes count now
1231 __ lea(scratch, ExternalAddress((address)ct->byte_map_base));
1232 __ addq(start, scratch); 1240 __ addq(start, scratch);
1233 __ BIND(L_loop); 1241 __ BIND(L_loop);
1234 __ movb(Address(start, count, Address::times_1), 0); 1242 __ movb(Address(start, count, Address::times_1), 0);
1235 __ decrementq(count); 1243 __ decrementq(count);
1236 __ jcc(Assembler::greaterEqual, L_loop); 1244 __ jcc(Assembler::greaterEqual, L_loop);