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annotate src/cpu/sparc/vm/copy_sparc.hpp @ 21125:41f048caa3dd
Predefine value outside of COMPILERGRAAL
| author | Stefan Anzinger <stefan.anzinger@oracle.com> |
|---|---|
| date | Mon, 27 Apr 2015 18:36:16 +0200 |
| parents | 7f1743e1a14e |
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| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 2003, 2011, 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 CPU_SPARC_VM_COPY_SPARC_HPP |
| 26 #define CPU_SPARC_VM_COPY_SPARC_HPP | |
| 27 | |
| 0 | 28 // Inline functions for memory copy and fill. |
| 29 | |
| 30 static void pd_conjoint_words(HeapWord* from, HeapWord* to, size_t count) { | |
| 31 (void)memmove(to, from, count * HeapWordSize); | |
| 32 } | |
| 33 | |
| 34 static void pd_disjoint_words(HeapWord* from, HeapWord* to, size_t count) { | |
| 35 switch (count) { | |
| 36 case 8: to[7] = from[7]; | |
| 37 case 7: to[6] = from[6]; | |
| 38 case 6: to[5] = from[5]; | |
| 39 case 5: to[4] = from[4]; | |
| 40 case 4: to[3] = from[3]; | |
| 41 case 3: to[2] = from[2]; | |
| 42 case 2: to[1] = from[1]; | |
| 43 case 1: to[0] = from[0]; | |
| 44 case 0: break; | |
| 45 default: (void)memcpy(to, from, count * HeapWordSize); | |
| 46 break; | |
| 47 } | |
| 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 (void)memmove(to, from, count); | |
| 82 } | |
| 83 | |
| 84 static void pd_conjoint_jshorts_atomic(jshort* from, jshort* to, size_t count) { | |
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85 if (from > to) { |
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86 while (count-- > 0) { |
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87 // Copy forwards |
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88 *to++ = *from++; |
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89 } |
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90 } else { |
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91 from += count - 1; |
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92 to += count - 1; |
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93 while (count-- > 0) { |
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94 // Copy backwards |
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95 *to-- = *from--; |
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96 } |
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97 } |
| 0 | 98 } |
| 99 | |
| 100 static void pd_conjoint_jints_atomic(jint* from, jint* to, size_t count) { | |
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101 if (from > to) { |
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102 while (count-- > 0) { |
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103 // Copy forwards |
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104 *to++ = *from++; |
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105 } |
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106 } else { |
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107 from += count - 1; |
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108 to += count - 1; |
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109 while (count-- > 0) { |
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110 // Copy backwards |
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111 *to-- = *from--; |
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112 } |
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113 } |
| 0 | 114 } |
| 115 | |
| 116 static void pd_conjoint_jlongs_atomic(jlong* from, jlong* to, size_t count) { | |
| 117 #ifdef _LP64 | |
| 118 assert(BytesPerLong == BytesPerOop, "jlongs and oops must be the same size"); | |
| 119 pd_conjoint_oops_atomic((oop*)from, (oop*)to, count); | |
| 120 #else | |
| 121 // Guarantee use of ldd/std via some asm code, because compiler won't. | |
| 122 // See solaris_sparc.il. | |
| 123 _Copy_conjoint_jlongs_atomic(from, to, count); | |
| 124 #endif | |
| 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 pd_conjoint_bytes_atomic(from, to, count); | |
| 146 } | |
| 147 | |
| 148 static void pd_arrayof_conjoint_jshorts(HeapWord* from, HeapWord* to, size_t count) { | |
| 149 pd_conjoint_jshorts_atomic((jshort*)from, (jshort*)to, count); | |
| 150 } | |
| 151 | |
| 152 static void pd_arrayof_conjoint_jints(HeapWord* from, HeapWord* to, size_t count) { | |
| 153 pd_conjoint_jints_atomic((jint*)from, (jint*)to, count); | |
| 154 } | |
| 155 | |
| 156 static void pd_arrayof_conjoint_jlongs(HeapWord* from, HeapWord* to, size_t count) { | |
| 157 pd_conjoint_jlongs_atomic((jlong*)from, (jlong*)to, count); | |
| 158 } | |
| 159 | |
| 160 static void pd_arrayof_conjoint_oops(HeapWord* from, HeapWord* to, size_t count) { | |
| 161 pd_conjoint_oops_atomic((oop*)from, (oop*)to, count); | |
| 162 } | |
| 163 | |
| 164 static void pd_fill_to_words(HeapWord* tohw, size_t count, juint value) { | |
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165 #ifdef _LP64 |
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166 guarantee(mask_bits((uintptr_t)tohw, right_n_bits(LogBytesPerLong)) == 0, |
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167 "unaligned fill words"); |
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168 julong* to = (julong*)tohw; |
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169 julong v = ((julong)value << 32) | value; |
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170 while (count-- > 0) { |
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171 *to++ = v; |
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172 } |
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173 #else // _LP64 |
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174 juint* to = (juint*)tohw; |
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175 while (count-- > 0) { |
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176 *to++ = value; |
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177 } |
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178 #endif // _LP64 |
| 0 | 179 } |
| 180 | |
| 3892 | 181 typedef void (*_zero_Fn)(HeapWord* to, size_t count); |
| 182 | |
| 0 | 183 static void pd_fill_to_aligned_words(HeapWord* tohw, size_t count, juint value) { |
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184 assert(MinObjAlignmentInBytes >= BytesPerLong, "need alternate implementation"); |
| 0 | 185 |
| 3892 | 186 if (value == 0 && UseBlockZeroing && |
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187 (count > (size_t)(BlockZeroingLowLimit >> LogHeapWordSize))) { |
| 3892 | 188 // Call it only when block zeroing is used |
| 189 ((_zero_Fn)StubRoutines::zero_aligned_words())(tohw, count); | |
| 190 } else { | |
| 0 | 191 julong* to = (julong*)tohw; |
| 192 julong v = ((julong)value << 32) | value; | |
| 193 // If count is odd, odd will be equal to 1 on 32-bit platform | |
| 194 // and be equal to 0 on 64-bit platform. | |
| 195 size_t odd = count % (BytesPerLong / HeapWordSize) ; | |
| 196 | |
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197 size_t aligned_count = align_object_offset(count - odd) / HeapWordsPerLong; |
| 0 | 198 julong* end = ((julong*)tohw) + aligned_count - 1; |
| 199 while (to <= end) { | |
| 200 DEBUG_ONLY(count -= BytesPerLong / HeapWordSize ;) | |
| 201 *to++ = v; | |
| 202 } | |
| 203 assert(count == odd, "bad bounds on loop filling to aligned words"); | |
| 204 if (odd) { | |
| 205 *((juint*)to) = value; | |
| 206 | |
| 207 } | |
| 3892 | 208 } |
| 0 | 209 } |
| 210 | |
| 211 static void pd_fill_to_bytes(void* to, size_t count, jubyte value) { | |
| 212 (void)memset(to, value, count); | |
| 213 } | |
| 214 | |
| 215 static void pd_zero_to_words(HeapWord* tohw, size_t count) { | |
| 216 pd_fill_to_words(tohw, count, 0); | |
| 217 } | |
| 218 | |
| 219 static void pd_zero_to_bytes(void* to, size_t count) { | |
| 220 (void)memset(to, 0, count); | |
| 221 } | |
| 1972 | 222 |
| 223 #endif // CPU_SPARC_VM_COPY_SPARC_HPP |