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src/os_cpu/solaris_x86/vm/bytes_solaris_x86.inline.hpp@9b8ce46870df
src/os_cpu/solaris_x86/vm/bytes_solaris_x86.inline.hpp
Thu, 16 Feb 2012 17:12:49 -0800
- author
- kvn
- date
- Thu, 16 Feb 2012 17:12:49 -0800
- changeset 3577
- 9b8ce46870df
- parent 2314
- f95d63e2154a
- child 6876
- 710a3c8b516e
- permissions
- -rw-r--r--
7145346: VerifyStackAtCalls is broken
Summary: Replace call_epilog() encoding with macroassembler use. Moved duplicated code to x86.ad. Fixed return_addr() definition.
Reviewed-by: never
1 /*
2 * Copyright (c) 1998, 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 #ifndef OS_CPU_SOLARIS_X86_VM_BYTES_SOLARIS_X86_INLINE_HPP
26 #define OS_CPU_SOLARIS_X86_VM_BYTES_SOLARIS_X86_INLINE_HPP
28 // For Sun Studio - implementation is in solaris_i486.il.
29 // For gcc - implementation is just below.
30 extern "C" u2 _raw_swap_u2(u2 x);
31 extern "C" u4 _raw_swap_u4(u4 x);
32 #ifdef AMD64
33 extern "C" u8 _raw_swap_u8(u8 x);
34 #else
35 extern "C" u8 _raw_swap_u8(u4 x, u4 y);
36 #endif // AMD64
38 // Efficient swapping of data bytes from Java byte
39 // ordering to native byte ordering and vice versa.
40 inline u2 Bytes::swap_u2(u2 x) {
41 return _raw_swap_u2(x);
42 }
44 inline u4 Bytes::swap_u4(u4 x) {
45 return _raw_swap_u4(x);
46 }
48 inline u8 Bytes::swap_u8(u8 x) {
49 #ifdef AMD64
50 return _raw_swap_u8(x);
51 #else
52 return swap_u8_base(*(u4*)&x, *(((u4*)&x)+1));
53 #endif // AMD64
55 }
57 #ifndef AMD64
58 // Helper function for swap_u8
59 inline u8 Bytes::swap_u8_base(u4 x, u4 y) {
60 return _raw_swap_u8(x, y);
61 }
62 #endif // !AMD64
65 #ifdef _GNU_SOURCE
67 extern "C" {
68 #ifdef AMD64
69 inline u2 _raw_swap_u2(u2 x) {
70 register unsigned short int __dest;
71 __asm__ ("rorw $8, %w0": "=r" (__dest): "0" (x): "cc");
72 return __dest;
73 }
74 inline u4 _raw_swap_u4(u4 x) {
75 register unsigned int __dest;
76 __asm__ ("bswap %0" : "=r" (__dest) : "0" (x));
77 return __dest;
78 }
79 inline u8 _raw_swap_u8(u8 x) {
80 register unsigned long __dest;
81 __asm__ ("bswap %q0" : "=r" (__dest) : "0" (x));
82 return __dest;
83 }
84 #else
85 inline u2 _raw_swap_u2(u2 x) {
86 u2 ret;
87 __asm__ __volatile__ (
88 "movw %0, %%ax;"
89 "xchg %%al, %%ah;"
90 "movw %%ax, %0"
91 :"=r" (ret) // output : register 0 => ret
92 :"0" (x) // input : x => register 0
93 :"ax", "0" // clobbered registers
94 );
95 return ret;
96 }
98 inline u4 _raw_swap_u4(u4 x) {
99 u4 ret;
100 __asm__ __volatile__ (
101 "bswap %0"
102 :"=r" (ret) // output : register 0 => ret
103 :"0" (x) // input : x => register 0
104 :"0" // clobbered register
105 );
106 return ret;
107 }
109 inline u8 _raw_swap_u8(u4 x, u4 y) {
110 return (((u8)_raw_swap_u4(x))<<32) | _raw_swap_u4(y);
111 }
112 #endif // AMD64
113 }
114 #endif //_GNU_SOURCE
116 #endif // OS_CPU_SOLARIS_X86_VM_BYTES_SOLARIS_X86_INLINE_HPP
