Mercurial > hg > truffle
comparison src/cpu/ppc/vm/copy_ppc.hpp @ 14408:ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
Summary: With this change the HotSpot core build works on Linux/PPC64. The VM succesfully executes simple test programs.
Reviewed-by: kvn
author | goetz |
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date | Fri, 02 Aug 2013 16:46:45 +0200 |
parents | |
children | 67fa91961822 |
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14407:94c202aa2646 | 14408:ec28f9c041ff |
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1 /* | |
2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. | |
3 * Copyright 2012, 2013 SAP AG. All rights reserved. | |
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
5 * | |
6 * This code is free software; you can redistribute it and/or modify it | |
7 * under the terms of the GNU General Public License version 2 only, as | |
8 * published by the Free Software Foundation. | |
9 * | |
10 * This code is distributed in the hope that it will be useful, but WITHOUT | |
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
13 * version 2 for more details (a copy is included in the LICENSE file that | |
14 * accompanied this code). | |
15 * | |
16 * You should have received a copy of the GNU General Public License version | |
17 * 2 along with this work; if not, write to the Free Software Foundation, | |
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
19 * | |
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
21 * or visit www.oracle.com if you need additional information or have any | |
22 * questions. | |
23 * | |
24 */ | |
25 | |
26 #ifndef CPU_PPC_VM_COPY_PPC_HPP | |
27 #define CPU_PPC_VM_COPY_PPC_HPP | |
28 | |
29 #ifndef PPC64 | |
30 #error "copy currently only implemented for PPC64" | |
31 #endif | |
32 | |
33 // Inline functions for memory copy and fill. | |
34 | |
35 static void pd_conjoint_words(HeapWord* from, HeapWord* to, size_t count) { | |
36 (void)memmove(to, from, count * HeapWordSize); | |
37 } | |
38 | |
39 static void pd_disjoint_words(HeapWord* from, HeapWord* to, size_t count) { | |
40 switch (count) { | |
41 case 8: to[7] = from[7]; | |
42 case 7: to[6] = from[6]; | |
43 case 6: to[5] = from[5]; | |
44 case 5: to[4] = from[4]; | |
45 case 4: to[3] = from[3]; | |
46 case 3: to[2] = from[2]; | |
47 case 2: to[1] = from[1]; | |
48 case 1: to[0] = from[0]; | |
49 case 0: break; | |
50 default: (void)memcpy(to, from, count * HeapWordSize); | |
51 break; | |
52 } | |
53 } | |
54 | |
55 static void pd_disjoint_words_atomic(HeapWord* from, HeapWord* to, size_t count) { | |
56 switch (count) { | |
57 case 8: to[7] = from[7]; | |
58 case 7: to[6] = from[6]; | |
59 case 6: to[5] = from[5]; | |
60 case 5: to[4] = from[4]; | |
61 case 4: to[3] = from[3]; | |
62 case 3: to[2] = from[2]; | |
63 case 2: to[1] = from[1]; | |
64 case 1: to[0] = from[0]; | |
65 case 0: break; | |
66 default: while (count-- > 0) { | |
67 *to++ = *from++; | |
68 } | |
69 break; | |
70 } | |
71 } | |
72 | |
73 static void pd_aligned_conjoint_words(HeapWord* from, HeapWord* to, size_t count) { | |
74 (void)memmove(to, from, count * HeapWordSize); | |
75 } | |
76 | |
77 static void pd_aligned_disjoint_words(HeapWord* from, HeapWord* to, size_t count) { | |
78 pd_disjoint_words(from, to, count); | |
79 } | |
80 | |
81 static void pd_conjoint_bytes(void* from, void* to, size_t count) { | |
82 (void)memmove(to, from, count); | |
83 } | |
84 | |
85 static void pd_conjoint_bytes_atomic(void* from, void* to, size_t count) { | |
86 (void)memmove(to, from, count); | |
87 } | |
88 | |
89 // Template for atomic, element-wise copy. | |
90 template <class T> | |
91 static void copy_conjoint_atomic(T* from, T* to, size_t count) { | |
92 if (from > to) { | |
93 while (count-- > 0) { | |
94 // Copy forwards | |
95 *to++ = *from++; | |
96 } | |
97 } else { | |
98 from += count - 1; | |
99 to += count - 1; | |
100 while (count-- > 0) { | |
101 // Copy backwards | |
102 *to-- = *from--; | |
103 } | |
104 } | |
105 } | |
106 | |
107 static void pd_conjoint_jshorts_atomic(jshort* from, jshort* to, size_t count) { | |
108 copy_conjoint_atomic<jshort>(from, to, count); | |
109 } | |
110 | |
111 static void pd_conjoint_jints_atomic(jint* from, jint* to, size_t count) { | |
112 copy_conjoint_atomic<jint>(from, to, count); | |
113 } | |
114 | |
115 static void pd_conjoint_jlongs_atomic(jlong* from, jlong* to, size_t count) { | |
116 copy_conjoint_atomic<jlong>(from, to, count); | |
117 } | |
118 | |
119 static void pd_conjoint_oops_atomic(oop* from, oop* to, size_t count) { | |
120 copy_conjoint_atomic<oop>(from, to, count); | |
121 } | |
122 | |
123 static void pd_arrayof_conjoint_bytes(HeapWord* from, HeapWord* to, size_t count) { | |
124 pd_conjoint_bytes_atomic(from, to, count); | |
125 } | |
126 | |
127 static void pd_arrayof_conjoint_jshorts(HeapWord* from, HeapWord* to, size_t count) { | |
128 pd_conjoint_jshorts_atomic((jshort*)from, (jshort*)to, count); | |
129 } | |
130 | |
131 static void pd_arrayof_conjoint_jints(HeapWord* from, HeapWord* to, size_t count) { | |
132 pd_conjoint_jints_atomic((jint*)from, (jint*)to, count); | |
133 } | |
134 | |
135 static void pd_arrayof_conjoint_jlongs(HeapWord* from, HeapWord* to, size_t count) { | |
136 pd_conjoint_jlongs_atomic((jlong*)from, (jlong*)to, count); | |
137 } | |
138 | |
139 static void pd_arrayof_conjoint_oops(HeapWord* from, HeapWord* to, size_t count) { | |
140 pd_conjoint_oops_atomic((oop*)from, (oop*)to, count); | |
141 } | |
142 | |
143 static void pd_fill_to_words(HeapWord* tohw, size_t count, juint value) { | |
144 julong* to = (julong*)tohw; | |
145 julong v = ((julong)value << 32) | value; | |
146 while (count-- > 0) { | |
147 *to++ = v; | |
148 } | |
149 } | |
150 | |
151 static void pd_fill_to_aligned_words(HeapWord* tohw, size_t count, juint value) { | |
152 pd_fill_to_words(tohw, count, value); | |
153 } | |
154 | |
155 static void pd_fill_to_bytes(void* to, size_t count, jubyte value) { | |
156 (void)memset(to, value, count); | |
157 } | |
158 | |
159 static void pd_zero_to_words(HeapWord* tohw, size_t count) { | |
160 pd_fill_to_words(tohw, count, 0); | |
161 } | |
162 | |
163 static void pd_zero_to_bytes(void* to, size_t count) { | |
164 (void)memset(to, 0, count); | |
165 } | |
166 | |
167 #endif // CPU_PPC_VM_COPY_PPC_HPP |