Mercurial > hg > graal-compiler
annotate src/os_cpu/windows_x86/vm/copy_windows_x86.inline.hpp @ 1555:5f42499e57ad jdk7-b97
Added tag hs19-b02 for changeset 573e8ea5fd68
author | trims |
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date | Fri, 04 Jun 2010 11:43:53 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2004, 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 |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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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 | |
25 static void pd_conjoint_words(HeapWord* from, HeapWord* to, size_t count) { | |
26 (void)memmove(to, from, count * HeapWordSize); | |
27 } | |
28 | |
29 static void pd_disjoint_words(HeapWord* from, HeapWord* to, size_t count) { | |
30 #ifdef AMD64 | |
31 switch (count) { | |
32 case 8: to[7] = from[7]; | |
33 case 7: to[6] = from[6]; | |
34 case 6: to[5] = from[5]; | |
35 case 5: to[4] = from[4]; | |
36 case 4: to[3] = from[3]; | |
37 case 3: to[2] = from[2]; | |
38 case 2: to[1] = from[1]; | |
39 case 1: to[0] = from[0]; | |
40 case 0: break; | |
41 default: | |
42 (void)memcpy(to, from, count * HeapWordSize); | |
43 break; | |
44 } | |
45 #else | |
46 (void)memcpy(to, from, count * HeapWordSize); | |
47 #endif // AMD64 | |
48 } | |
49 | |
50 static void pd_disjoint_words_atomic(HeapWord* from, HeapWord* to, size_t count) { | |
51 switch (count) { | |
52 case 8: to[7] = from[7]; | |
53 case 7: to[6] = from[6]; | |
54 case 6: to[5] = from[5]; | |
55 case 5: to[4] = from[4]; | |
56 case 4: to[3] = from[3]; | |
57 case 3: to[2] = from[2]; | |
58 case 2: to[1] = from[1]; | |
59 case 1: to[0] = from[0]; | |
60 case 0: break; | |
61 default: while (count-- > 0) { | |
62 *to++ = *from++; | |
63 } | |
64 break; | |
65 } | |
66 } | |
67 | |
68 static void pd_aligned_conjoint_words(HeapWord* from, HeapWord* to, size_t count) { | |
69 (void)memmove(to, from, count * HeapWordSize); | |
70 } | |
71 | |
72 static void pd_aligned_disjoint_words(HeapWord* from, HeapWord* to, size_t count) { | |
73 pd_disjoint_words(from, to, count); | |
74 } | |
75 | |
76 static void pd_conjoint_bytes(void* from, void* to, size_t count) { | |
77 (void)memmove(to, from, count); | |
78 } | |
79 | |
80 static void pd_conjoint_bytes_atomic(void* from, void* to, size_t count) { | |
81 pd_conjoint_bytes(from, to, count); | |
82 } | |
83 | |
84 static void pd_conjoint_jshorts_atomic(jshort* from, jshort* to, size_t count) { | |
85 // FIXME | |
86 (void)memmove(to, from, count << LogBytesPerShort); | |
87 } | |
88 | |
89 static void pd_conjoint_jints_atomic(jint* from, jint* to, size_t count) { | |
90 // FIXME | |
91 (void)memmove(to, from, count << LogBytesPerInt); | |
92 } | |
93 | |
94 static void pd_conjoint_jlongs_atomic(jlong* from, jlong* to, size_t count) { | |
95 #ifdef AMD64 | |
96 assert(BytesPerLong == BytesPerOop, "jlongs and oops must be the same size"); | |
97 pd_conjoint_oops_atomic((oop*)from, (oop*)to, count); | |
98 #else | |
99 // Guarantee use of fild/fistp or xmm regs via some asm code, because compilers won't. | |
100 __asm { | |
101 mov eax, from; | |
102 mov edx, to; | |
103 mov ecx, count; | |
104 cmp eax, edx; | |
105 jbe downtest; | |
106 jmp uptest; | |
107 up: | |
108 fild qword ptr [eax]; | |
109 fistp qword ptr [edx]; | |
110 add eax, 8; | |
111 add edx, 8; | |
112 uptest: | |
113 sub ecx, 1; | |
114 jge up; | |
115 jmp done; | |
116 down: | |
117 fild qword ptr [eax][ecx*8]; | |
118 fistp qword ptr [edx][ecx*8]; | |
119 downtest: | |
120 sub ecx, 1; | |
121 jge down; | |
122 done:; | |
123 } | |
124 #endif // AMD64 | |
125 } | |
126 | |
127 static void pd_conjoint_oops_atomic(oop* from, oop* to, size_t count) { | |
128 // Do better than this: inline memmove body NEEDS CLEANUP | |
129 if (from > to) { | |
130 while (count-- > 0) { | |
131 // Copy forwards | |
132 *to++ = *from++; | |
133 } | |
134 } else { | |
135 from += count - 1; | |
136 to += count - 1; | |
137 while (count-- > 0) { | |
138 // Copy backwards | |
139 *to-- = *from--; | |
140 } | |
141 } | |
142 } | |
143 | |
144 static void pd_arrayof_conjoint_bytes(HeapWord* from, HeapWord* to, size_t count) { | |
145 #ifdef AMD64 | |
146 pd_conjoint_bytes_atomic(from, to, count); | |
147 #else | |
148 pd_conjoint_bytes(from, to, count); | |
149 #endif // AMD64 | |
150 } | |
151 | |
152 static void pd_arrayof_conjoint_jshorts(HeapWord* from, HeapWord* to, size_t count) { | |
153 pd_conjoint_jshorts_atomic((jshort*)from, (jshort*)to, count); | |
154 } | |
155 | |
156 static void pd_arrayof_conjoint_jints(HeapWord* from, HeapWord* to, size_t count) { | |
157 pd_conjoint_jints_atomic((jint*)from, (jint*)to, count); | |
158 } | |
159 | |
160 static void pd_arrayof_conjoint_jlongs(HeapWord* from, HeapWord* to, size_t count) { | |
161 pd_conjoint_jlongs_atomic((jlong*)from, (jlong*)to, count); | |
162 } | |
163 | |
164 static void pd_arrayof_conjoint_oops(HeapWord* from, HeapWord* to, size_t count) { | |
165 pd_conjoint_oops_atomic((oop*)from, (oop*)to, count); | |
166 } |