Fri, 07 Dec 2012 01:09:03 -0800
Merge
1 /*
2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
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
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #include "precompiled.hpp"
26 #include "asm/macroAssembler.inline.hpp"
27 #include "runtime/os.hpp"
28 #include "runtime/threadLocalStorage.hpp"
30 #include <sys/trap.h> // For trap numbers
31 #include <v9/sys/psr_compat.h> // For V8 compatibility
33 void MacroAssembler::read_ccr_trap(Register ccr_save) {
34 // Execute a trap to get the PSR, mask and shift
35 // to get the condition codes.
36 get_psr_trap();
37 nop();
38 set(PSR_ICC, ccr_save);
39 and3(O0, ccr_save, ccr_save);
40 srl(ccr_save, PSR_ICC_SHIFT, ccr_save);
41 }
43 void MacroAssembler::write_ccr_trap(Register ccr_save, Register scratch1, Register scratch2) {
44 // Execute a trap to get the PSR, shift back
45 // the condition codes, mask the condition codes
46 // back into and PSR and trap to write back the
47 // PSR.
48 sll(ccr_save, PSR_ICC_SHIFT, scratch2);
49 get_psr_trap();
50 nop();
51 set(~PSR_ICC, scratch1);
52 and3(O0, scratch1, O0);
53 or3(O0, scratch2, O0);
54 set_psr_trap();
55 nop();
56 }
58 void MacroAssembler::flush_windows_trap() { trap(ST_FLUSH_WINDOWS); }
59 void MacroAssembler::clean_windows_trap() { trap(ST_CLEAN_WINDOWS); }
60 void MacroAssembler::get_psr_trap() { trap(ST_GETPSR); }
61 void MacroAssembler::set_psr_trap() { trap(ST_SETPSR); }