Mercurial > hg > truffle
annotate src/os_cpu/windows_x86/vm/bytes_windows_x86.inline.hpp @ 5318:b5cd7bc05695
Method entry counters: Enable the flag to collect an execution profile of compiled methods and their callers. This allows to, e.g., detect methods that should be inlined because they are called frequently.
author | Christian Wimmer <Christian.Wimmer@Oracle.com> |
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date | Fri, 27 Apr 2012 12:56:39 -0700 |
parents | f95d63e2154a |
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rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef OS_CPU_WINDOWS_X86_VM_BYTES_WINDOWS_X86_INLINE_HPP |
26 #define OS_CPU_WINDOWS_X86_VM_BYTES_WINDOWS_X86_INLINE_HPP | |
27 | |
0 | 28 #pragma warning(disable: 4035) // Disable warning 4035: no return value |
29 | |
30 // Efficient swapping of data bytes from Java byte | |
31 // ordering to native byte ordering and vice versa. | |
32 inline u2 Bytes::swap_u2(u2 x) { | |
33 #ifdef AMD64 | |
34 address p = (address) &x; | |
35 return ( (u2(p[0]) << 8 ) | ( u2(p[1])) ); | |
36 #else | |
37 __asm { | |
38 mov ax, x | |
39 xchg al, ah | |
40 } | |
41 // no return statement needed, result is already in ax | |
42 // compiler warning C4035 disabled via warning pragma | |
43 #endif // AMD64 | |
44 } | |
45 | |
46 inline u4 Bytes::swap_u4(u4 x) { | |
47 #ifdef AMD64 | |
48 address p = (address) &x; | |
49 return ( (u4(p[0]) << 24) | (u4(p[1]) << 16) | (u4(p[2]) << 8) | u4(p[3])) ; | |
50 #else | |
51 __asm { | |
52 mov eax, x | |
53 bswap eax | |
54 } | |
55 // no return statement needed, result is already in eax | |
56 // compiler warning C4035 disabled via warning pragma | |
57 #endif // AMD64 | |
58 } | |
59 | |
60 #ifdef AMD64 | |
61 inline u8 Bytes::swap_u8(u8 x) { | |
62 address p = (address) &x; | |
63 return ( (u8(p[0]) << 56) | (u8(p[1]) << 48) | (u8(p[2]) << 40) | (u8(p[3]) << 32) | | |
64 (u8(p[4]) << 24) | (u8(p[5]) << 16) | (u8(p[6]) << 8) | u8(p[7])) ; | |
65 } | |
66 | |
67 #else | |
68 // Helper function for swap_u8 | |
69 inline u8 Bytes::swap_u8_base(u4 x, u4 y) { | |
70 __asm { | |
71 mov eax, y | |
72 mov edx, x | |
73 bswap eax | |
74 bswap edx | |
75 } | |
76 // no return statement needed, result is already in edx:eax | |
77 // compiler warning C4035 disabled via warning pragma | |
78 } | |
79 | |
80 inline u8 Bytes::swap_u8(u8 x) { | |
81 return swap_u8_base(*(u4*)&x, *(((u4*)&x)+1)); | |
82 } | |
83 #endif // AMD64 | |
84 | |
85 #pragma warning(default: 4035) // Enable warning 4035: no return value | |
1972 | 86 |
87 #endif // OS_CPU_WINDOWS_X86_VM_BYTES_WINDOWS_X86_INLINE_HPP |