Thu, 03 Jan 2013 16:30:47 -0800
8005544: Use 256bit YMM registers in arraycopy stubs on x86
Summary: Use YMM registers in arraycopy and array_fill stubs.
Reviewed-by: roland, twisti
1 /*
2 * Copyright (c) 2003, 2012, 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 #ifndef CPU_X86_VM_STUBROUTINES_X86_64_HPP
26 #define CPU_X86_VM_STUBROUTINES_X86_64_HPP
28 // This file holds the platform specific parts of the StubRoutines
29 // definition. See stubRoutines.hpp for a description on how to
30 // extend it.
32 static bool returns_to_call_stub(address return_pc) { return return_pc == _call_stub_return_address; }
34 enum platform_dependent_constants {
35 code_size1 = 19000, // simply increase if too small (assembler will crash if too small)
36 code_size2 = 22000 // simply increase if too small (assembler will crash if too small)
37 };
39 class x86 {
40 friend class StubGenerator;
42 private:
43 static address _get_previous_fp_entry;
44 static address _get_previous_sp_entry;
45 static address _verify_mxcsr_entry;
47 static address _f2i_fixup;
48 static address _f2l_fixup;
49 static address _d2i_fixup;
50 static address _d2l_fixup;
52 static address _float_sign_mask;
53 static address _float_sign_flip;
54 static address _double_sign_mask;
55 static address _double_sign_flip;
56 static address _mxcsr_std;
57 // shuffle mask for fixing up 128-bit words consisting of big-endian 32-bit integers
58 static address _key_shuffle_mask_addr;
60 public:
62 static address get_previous_fp_entry()
63 {
64 return _get_previous_fp_entry;
65 }
67 static address get_previous_sp_entry()
68 {
69 return _get_previous_sp_entry;
70 }
72 static address verify_mxcsr_entry()
73 {
74 return _verify_mxcsr_entry;
75 }
77 static address f2i_fixup()
78 {
79 return _f2i_fixup;
80 }
82 static address f2l_fixup()
83 {
84 return _f2l_fixup;
85 }
87 static address d2i_fixup()
88 {
89 return _d2i_fixup;
90 }
92 static address d2l_fixup()
93 {
94 return _d2l_fixup;
95 }
97 static address float_sign_mask()
98 {
99 return _float_sign_mask;
100 }
102 static address float_sign_flip()
103 {
104 return _float_sign_flip;
105 }
107 static address double_sign_mask()
108 {
109 return _double_sign_mask;
110 }
112 static address double_sign_flip()
113 {
114 return _double_sign_flip;
115 }
117 static address mxcsr_std()
118 {
119 return _mxcsr_std;
120 }
122 static address key_shuffle_mask_addr() { return _key_shuffle_mask_addr; }
124 };
126 #endif // CPU_X86_VM_STUBROUTINES_X86_64_HPP