Mercurial > hg > truffle
annotate src/share/vm/runtime/stubRoutines.cpp @ 20268:4c1b88a53c74
8046670: Make CMS metadata aware closures applicable for other collectors
Reviewed-by: ehelin, mgerdin
author | stefank |
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date | Tue, 24 Jun 2014 16:20:15 +0200 |
parents | 980532a806a5 |
children | 6b0fd0964b87 b20a35eae442 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, 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 #include "precompiled.hpp" |
26 #include "asm/codeBuffer.hpp" | |
27 #include "memory/resourceArea.hpp" | |
28 #include "oops/oop.inline.hpp" | |
29 #include "runtime/interfaceSupport.hpp" | |
30 #include "runtime/sharedRuntime.hpp" | |
31 #include "runtime/stubRoutines.hpp" | |
32 #include "runtime/timer.hpp" | |
33 #include "utilities/copy.hpp" | |
34 #ifdef COMPILER2 | |
35 #include "opto/runtime.hpp" | |
36 #endif | |
0 | 37 |
38 | |
39 // Implementation of StubRoutines - for a description | |
40 // of how to extend it, see the header file. | |
41 | |
42 // Class Variables | |
43 | |
44 BufferBlob* StubRoutines::_code1 = NULL; | |
45 BufferBlob* StubRoutines::_code2 = NULL; | |
46 | |
47 address StubRoutines::_call_stub_return_address = NULL; | |
48 address StubRoutines::_call_stub_entry = NULL; | |
49 | |
50 address StubRoutines::_catch_exception_entry = NULL; | |
51 address StubRoutines::_forward_exception_entry = NULL; | |
52 address StubRoutines::_throw_AbstractMethodError_entry = NULL; | |
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53 address StubRoutines::_throw_IncompatibleClassChangeError_entry = NULL; |
0 | 54 address StubRoutines::_throw_NullPointerException_at_call_entry = NULL; |
55 address StubRoutines::_throw_StackOverflowError_entry = NULL; | |
56 address StubRoutines::_handler_for_unsafe_access_entry = NULL; | |
57 jint StubRoutines::_verify_oop_count = 0; | |
58 address StubRoutines::_verify_oop_subroutine_entry = NULL; | |
59 address StubRoutines::_atomic_xchg_entry = NULL; | |
60 address StubRoutines::_atomic_xchg_ptr_entry = NULL; | |
61 address StubRoutines::_atomic_store_entry = NULL; | |
62 address StubRoutines::_atomic_store_ptr_entry = NULL; | |
63 address StubRoutines::_atomic_cmpxchg_entry = NULL; | |
64 address StubRoutines::_atomic_cmpxchg_ptr_entry = NULL; | |
65 address StubRoutines::_atomic_cmpxchg_long_entry = NULL; | |
66 address StubRoutines::_atomic_add_entry = NULL; | |
67 address StubRoutines::_atomic_add_ptr_entry = NULL; | |
68 address StubRoutines::_fence_entry = NULL; | |
69 address StubRoutines::_d2i_wrapper = NULL; | |
70 address StubRoutines::_d2l_wrapper = NULL; | |
71 | |
72 jint StubRoutines::_fpu_cntrl_wrd_std = 0; | |
73 jint StubRoutines::_fpu_cntrl_wrd_24 = 0; | |
74 jint StubRoutines::_fpu_cntrl_wrd_64 = 0; | |
75 jint StubRoutines::_fpu_cntrl_wrd_trunc = 0; | |
76 jint StubRoutines::_mxcsr_std = 0; | |
77 jint StubRoutines::_fpu_subnormal_bias1[3] = { 0, 0, 0 }; | |
78 jint StubRoutines::_fpu_subnormal_bias2[3] = { 0, 0, 0 }; | |
79 | |
80 // Compiled code entry points default values | |
2324 | 81 // The default functions don't have separate disjoint versions. |
0 | 82 address StubRoutines::_jbyte_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jbyte_copy); |
83 address StubRoutines::_jshort_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jshort_copy); | |
84 address StubRoutines::_jint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jint_copy); | |
85 address StubRoutines::_jlong_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jlong_copy); | |
86 address StubRoutines::_oop_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::oop_copy); | |
2324 | 87 address StubRoutines::_oop_arraycopy_uninit = CAST_FROM_FN_PTR(address, StubRoutines::oop_copy_uninit); |
0 | 88 address StubRoutines::_jbyte_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jbyte_copy); |
89 address StubRoutines::_jshort_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jshort_copy); | |
90 address StubRoutines::_jint_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jint_copy); | |
91 address StubRoutines::_jlong_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jlong_copy); | |
92 address StubRoutines::_oop_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::oop_copy); | |
2324 | 93 address StubRoutines::_oop_disjoint_arraycopy_uninit = CAST_FROM_FN_PTR(address, StubRoutines::oop_copy_uninit); |
0 | 94 |
95 address StubRoutines::_arrayof_jbyte_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jbyte_copy); | |
96 address StubRoutines::_arrayof_jshort_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jshort_copy); | |
97 address StubRoutines::_arrayof_jint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jint_copy); | |
98 address StubRoutines::_arrayof_jlong_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jlong_copy); | |
99 address StubRoutines::_arrayof_oop_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_oop_copy); | |
2324 | 100 address StubRoutines::_arrayof_oop_arraycopy_uninit = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_oop_copy_uninit); |
0 | 101 address StubRoutines::_arrayof_jbyte_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jbyte_copy); |
102 address StubRoutines::_arrayof_jshort_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jshort_copy); | |
103 address StubRoutines::_arrayof_jint_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jint_copy); | |
104 address StubRoutines::_arrayof_jlong_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jlong_copy); | |
2324 | 105 address StubRoutines::_arrayof_oop_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_oop_copy); |
106 address StubRoutines::_arrayof_oop_disjoint_arraycopy_uninit = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_oop_copy_uninit); | |
107 | |
3892 | 108 address StubRoutines::_zero_aligned_words = CAST_FROM_FN_PTR(address, Copy::zero_to_words); |
0 | 109 |
110 address StubRoutines::_checkcast_arraycopy = NULL; | |
2324 | 111 address StubRoutines::_checkcast_arraycopy_uninit = NULL; |
0 | 112 address StubRoutines::_unsafe_arraycopy = NULL; |
113 address StubRoutines::_generic_arraycopy = NULL; | |
114 | |
1763 | 115 |
116 address StubRoutines::_jbyte_fill; | |
117 address StubRoutines::_jshort_fill; | |
118 address StubRoutines::_jint_fill; | |
119 address StubRoutines::_arrayof_jbyte_fill; | |
120 address StubRoutines::_arrayof_jshort_fill; | |
121 address StubRoutines::_arrayof_jint_fill; | |
122 | |
6894 | 123 address StubRoutines::_aescrypt_encryptBlock = NULL; |
124 address StubRoutines::_aescrypt_decryptBlock = NULL; | |
125 address StubRoutines::_cipherBlockChaining_encryptAESCrypt = NULL; | |
126 address StubRoutines::_cipherBlockChaining_decryptAESCrypt = NULL; | |
1763 | 127 |
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128 address StubRoutines::_updateBytesCRC32 = NULL; |
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129 address StubRoutines::_crc_table_adr = NULL; |
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130 |
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131 double (* StubRoutines::_intrinsic_log )(double) = NULL; |
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132 double (* StubRoutines::_intrinsic_log10 )(double) = NULL; |
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133 double (* StubRoutines::_intrinsic_exp )(double) = NULL; |
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134 double (* StubRoutines::_intrinsic_pow )(double, double) = NULL; |
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135 double (* StubRoutines::_intrinsic_sin )(double) = NULL; |
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136 double (* StubRoutines::_intrinsic_cos )(double) = NULL; |
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137 double (* StubRoutines::_intrinsic_tan )(double) = NULL; |
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138 |
11127 | 139 address StubRoutines::_safefetch32_entry = NULL; |
140 address StubRoutines::_safefetch32_fault_pc = NULL; | |
141 address StubRoutines::_safefetch32_continuation_pc = NULL; | |
142 address StubRoutines::_safefetchN_entry = NULL; | |
143 address StubRoutines::_safefetchN_fault_pc = NULL; | |
144 address StubRoutines::_safefetchN_continuation_pc = NULL; | |
145 | |
0 | 146 // Initialization |
147 // | |
148 // Note: to break cycle with universe initialization, stubs are generated in two phases. | |
149 // The first one generates stubs needed during universe init (e.g., _handle_must_compile_first_entry). | |
150 // The second phase includes all other stubs (which may depend on universe being initialized.) | |
151 | |
152 extern void StubGenerator_generate(CodeBuffer* code, bool all); // only interface to generators | |
153 | |
154 void StubRoutines::initialize1() { | |
155 if (_code1 == NULL) { | |
156 ResourceMark rm; | |
157 TraceTime timer("StubRoutines generation 1", TraceStartupTime); | |
158 _code1 = BufferBlob::create("StubRoutines (1)", code_size1); | |
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159 if (_code1 == NULL) { |
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160 vm_exit_out_of_memory(code_size1, OOM_MALLOC_ERROR, "CodeCache: no room for StubRoutines (1)"); |
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161 } |
1748 | 162 CodeBuffer buffer(_code1); |
0 | 163 StubGenerator_generate(&buffer, false); |
164 } | |
165 } | |
166 | |
167 | |
168 #ifdef ASSERT | |
169 typedef void (*arraycopy_fn)(address src, address dst, int count); | |
170 | |
171 // simple tests of generated arraycopy functions | |
172 static void test_arraycopy_func(address func, int alignment) { | |
173 int v = 0xcc; | |
174 int v2 = 0x11; | |
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175 jlong lbuffer[8]; |
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176 jlong lbuffer2[8]; |
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177 address fbuffer = (address) lbuffer; |
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178 address fbuffer2 = (address) lbuffer2; |
0 | 179 unsigned int i; |
180 for (i = 0; i < sizeof(lbuffer); i++) { | |
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181 fbuffer[i] = v; fbuffer2[i] = v2; |
0 | 182 } |
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183 // C++ does not guarantee jlong[] array alignment to 8 bytes. |
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184 // Use middle of array to check that memory before it is not modified. |
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185 address buffer = (address) round_to((intptr_t)&lbuffer[4], BytesPerLong); |
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186 address buffer2 = (address) round_to((intptr_t)&lbuffer2[4], BytesPerLong); |
0 | 187 // do an aligned copy |
188 ((arraycopy_fn)func)(buffer, buffer2, 0); | |
189 for (i = 0; i < sizeof(lbuffer); i++) { | |
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190 assert(fbuffer[i] == v && fbuffer2[i] == v2, "shouldn't have copied anything"); |
0 | 191 } |
192 // adjust destination alignment | |
193 ((arraycopy_fn)func)(buffer, buffer2 + alignment, 0); | |
194 for (i = 0; i < sizeof(lbuffer); i++) { | |
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195 assert(fbuffer[i] == v && fbuffer2[i] == v2, "shouldn't have copied anything"); |
0 | 196 } |
197 // adjust source alignment | |
198 ((arraycopy_fn)func)(buffer + alignment, buffer2, 0); | |
199 for (i = 0; i < sizeof(lbuffer); i++) { | |
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200 assert(fbuffer[i] == v && fbuffer2[i] == v2, "shouldn't have copied anything"); |
0 | 201 } |
202 } | |
203 #endif | |
204 | |
205 | |
206 void StubRoutines::initialize2() { | |
207 if (_code2 == NULL) { | |
208 ResourceMark rm; | |
209 TraceTime timer("StubRoutines generation 2", TraceStartupTime); | |
210 _code2 = BufferBlob::create("StubRoutines (2)", code_size2); | |
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211 if (_code2 == NULL) { |
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212 vm_exit_out_of_memory(code_size2, OOM_MALLOC_ERROR, "CodeCache: no room for StubRoutines (2)"); |
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213 } |
1748 | 214 CodeBuffer buffer(_code2); |
0 | 215 StubGenerator_generate(&buffer, true); |
216 } | |
217 | |
218 #ifdef ASSERT | |
219 | |
220 #define TEST_ARRAYCOPY(type) \ | |
221 test_arraycopy_func( type##_arraycopy(), sizeof(type)); \ | |
222 test_arraycopy_func( type##_disjoint_arraycopy(), sizeof(type)); \ | |
223 test_arraycopy_func(arrayof_##type##_arraycopy(), sizeof(HeapWord)); \ | |
224 test_arraycopy_func(arrayof_##type##_disjoint_arraycopy(), sizeof(HeapWord)) | |
225 | |
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226 // Make sure all the arraycopy stubs properly handle zero count |
0 | 227 TEST_ARRAYCOPY(jbyte); |
228 TEST_ARRAYCOPY(jshort); | |
229 TEST_ARRAYCOPY(jint); | |
230 TEST_ARRAYCOPY(jlong); | |
231 | |
232 #undef TEST_ARRAYCOPY | |
233 | |
1763 | 234 #define TEST_FILL(type) \ |
235 if (_##type##_fill != NULL) { \ | |
236 union { \ | |
237 double d; \ | |
238 type body[96]; \ | |
239 } s; \ | |
240 \ | |
241 int v = 32; \ | |
242 for (int offset = -2; offset <= 2; offset++) { \ | |
243 for (int i = 0; i < 96; i++) { \ | |
244 s.body[i] = 1; \ | |
245 } \ | |
246 type* start = s.body + 8 + offset; \ | |
247 for (int aligned = 0; aligned < 2; aligned++) { \ | |
248 if (aligned) { \ | |
249 if (((intptr_t)start) % HeapWordSize == 0) { \ | |
250 ((void (*)(type*, int, int))StubRoutines::_arrayof_##type##_fill)(start, v, 80); \ | |
251 } else { \ | |
252 continue; \ | |
253 } \ | |
254 } else { \ | |
255 ((void (*)(type*, int, int))StubRoutines::_##type##_fill)(start, v, 80); \ | |
256 } \ | |
257 for (int i = 0; i < 96; i++) { \ | |
258 if (i < (8 + offset) || i >= (88 + offset)) { \ | |
259 assert(s.body[i] == 1, "what?"); \ | |
260 } else { \ | |
261 assert(s.body[i] == 32, "what?"); \ | |
262 } \ | |
263 } \ | |
264 } \ | |
265 } \ | |
266 } \ | |
267 | |
268 TEST_FILL(jbyte); | |
269 TEST_FILL(jshort); | |
270 TEST_FILL(jint); | |
271 | |
272 #undef TEST_FILL | |
273 | |
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274 #define TEST_COPYRTN(type) \ |
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275 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::conjoint_##type##s_atomic), sizeof(type)); \ |
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276 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::arrayof_conjoint_##type##s), (int)MAX2(sizeof(HeapWord), sizeof(type))) |
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277 |
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278 // Make sure all the copy runtime routines properly handle zero count |
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279 TEST_COPYRTN(jbyte); |
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280 TEST_COPYRTN(jshort); |
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281 TEST_COPYRTN(jint); |
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282 TEST_COPYRTN(jlong); |
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283 |
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284 #undef TEST_COPYRTN |
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285 |
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286 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::conjoint_words), sizeof(HeapWord)); |
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287 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::disjoint_words), sizeof(HeapWord)); |
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288 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::disjoint_words_atomic), sizeof(HeapWord)); |
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289 // Aligned to BytesPerLong |
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290 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::aligned_conjoint_words), sizeof(jlong)); |
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291 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::aligned_disjoint_words), sizeof(jlong)); |
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292 |
0 | 293 #endif |
294 } | |
295 | |
296 | |
297 void stubRoutines_init1() { StubRoutines::initialize1(); } | |
298 void stubRoutines_init2() { StubRoutines::initialize2(); } | |
299 | |
300 // | |
301 // Default versions of arraycopy functions | |
302 // | |
303 | |
2324 | 304 static void gen_arraycopy_barrier_pre(oop* dest, size_t count, bool dest_uninitialized) { |
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305 assert(count != 0, "count should be non-zero"); |
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306 assert(count <= (size_t)max_intx, "count too large"); |
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307 BarrierSet* bs = Universe::heap()->barrier_set(); |
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308 assert(bs->has_write_ref_array_pre_opt(), "Must have pre-barrier opt"); |
2324 | 309 bs->write_ref_array_pre(dest, (int)count, dest_uninitialized); |
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310 } |
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311 |
0 | 312 static void gen_arraycopy_barrier(oop* dest, size_t count) { |
313 assert(count != 0, "count should be non-zero"); | |
314 BarrierSet* bs = Universe::heap()->barrier_set(); | |
315 assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt"); | |
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316 bs->write_ref_array((HeapWord*)dest, count); |
0 | 317 } |
318 | |
319 JRT_LEAF(void, StubRoutines::jbyte_copy(jbyte* src, jbyte* dest, size_t count)) | |
320 #ifndef PRODUCT | |
321 SharedRuntime::_jbyte_array_copy_ctr++; // Slow-path byte array copy | |
322 #endif // !PRODUCT | |
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323 Copy::conjoint_jbytes_atomic(src, dest, count); |
0 | 324 JRT_END |
325 | |
326 JRT_LEAF(void, StubRoutines::jshort_copy(jshort* src, jshort* dest, size_t count)) | |
327 #ifndef PRODUCT | |
328 SharedRuntime::_jshort_array_copy_ctr++; // Slow-path short/char array copy | |
329 #endif // !PRODUCT | |
330 Copy::conjoint_jshorts_atomic(src, dest, count); | |
331 JRT_END | |
332 | |
333 JRT_LEAF(void, StubRoutines::jint_copy(jint* src, jint* dest, size_t count)) | |
334 #ifndef PRODUCT | |
335 SharedRuntime::_jint_array_copy_ctr++; // Slow-path int/float array copy | |
336 #endif // !PRODUCT | |
337 Copy::conjoint_jints_atomic(src, dest, count); | |
338 JRT_END | |
339 | |
340 JRT_LEAF(void, StubRoutines::jlong_copy(jlong* src, jlong* dest, size_t count)) | |
341 #ifndef PRODUCT | |
342 SharedRuntime::_jlong_array_copy_ctr++; // Slow-path long/double array copy | |
343 #endif // !PRODUCT | |
344 Copy::conjoint_jlongs_atomic(src, dest, count); | |
345 JRT_END | |
346 | |
347 JRT_LEAF(void, StubRoutines::oop_copy(oop* src, oop* dest, size_t count)) | |
348 #ifndef PRODUCT | |
349 SharedRuntime::_oop_array_copy_ctr++; // Slow-path oop array copy | |
350 #endif // !PRODUCT | |
351 assert(count != 0, "count should be non-zero"); | |
2324 | 352 gen_arraycopy_barrier_pre(dest, count, /*dest_uninitialized*/false); |
353 Copy::conjoint_oops_atomic(src, dest, count); | |
354 gen_arraycopy_barrier(dest, count); | |
355 JRT_END | |
356 | |
357 JRT_LEAF(void, StubRoutines::oop_copy_uninit(oop* src, oop* dest, size_t count)) | |
358 #ifndef PRODUCT | |
359 SharedRuntime::_oop_array_copy_ctr++; // Slow-path oop array copy | |
360 #endif // !PRODUCT | |
361 assert(count != 0, "count should be non-zero"); | |
362 gen_arraycopy_barrier_pre(dest, count, /*dest_uninitialized*/true); | |
0 | 363 Copy::conjoint_oops_atomic(src, dest, count); |
364 gen_arraycopy_barrier(dest, count); | |
365 JRT_END | |
366 | |
367 JRT_LEAF(void, StubRoutines::arrayof_jbyte_copy(HeapWord* src, HeapWord* dest, size_t count)) | |
368 #ifndef PRODUCT | |
369 SharedRuntime::_jbyte_array_copy_ctr++; // Slow-path byte array copy | |
370 #endif // !PRODUCT | |
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371 Copy::arrayof_conjoint_jbytes(src, dest, count); |
0 | 372 JRT_END |
373 | |
374 JRT_LEAF(void, StubRoutines::arrayof_jshort_copy(HeapWord* src, HeapWord* dest, size_t count)) | |
375 #ifndef PRODUCT | |
376 SharedRuntime::_jshort_array_copy_ctr++; // Slow-path short/char array copy | |
377 #endif // !PRODUCT | |
378 Copy::arrayof_conjoint_jshorts(src, dest, count); | |
379 JRT_END | |
380 | |
381 JRT_LEAF(void, StubRoutines::arrayof_jint_copy(HeapWord* src, HeapWord* dest, size_t count)) | |
382 #ifndef PRODUCT | |
383 SharedRuntime::_jint_array_copy_ctr++; // Slow-path int/float array copy | |
384 #endif // !PRODUCT | |
385 Copy::arrayof_conjoint_jints(src, dest, count); | |
386 JRT_END | |
387 | |
388 JRT_LEAF(void, StubRoutines::arrayof_jlong_copy(HeapWord* src, HeapWord* dest, size_t count)) | |
389 #ifndef PRODUCT | |
390 SharedRuntime::_jlong_array_copy_ctr++; // Slow-path int/float array copy | |
391 #endif // !PRODUCT | |
392 Copy::arrayof_conjoint_jlongs(src, dest, count); | |
393 JRT_END | |
394 | |
395 JRT_LEAF(void, StubRoutines::arrayof_oop_copy(HeapWord* src, HeapWord* dest, size_t count)) | |
396 #ifndef PRODUCT | |
397 SharedRuntime::_oop_array_copy_ctr++; // Slow-path oop array copy | |
398 #endif // !PRODUCT | |
399 assert(count != 0, "count should be non-zero"); | |
2324 | 400 gen_arraycopy_barrier_pre((oop *) dest, count, /*dest_uninitialized*/false); |
0 | 401 Copy::arrayof_conjoint_oops(src, dest, count); |
402 gen_arraycopy_barrier((oop *) dest, count); | |
403 JRT_END | |
1763 | 404 |
2324 | 405 JRT_LEAF(void, StubRoutines::arrayof_oop_copy_uninit(HeapWord* src, HeapWord* dest, size_t count)) |
406 #ifndef PRODUCT | |
407 SharedRuntime::_oop_array_copy_ctr++; // Slow-path oop array copy | |
408 #endif // !PRODUCT | |
409 assert(count != 0, "count should be non-zero"); | |
410 gen_arraycopy_barrier_pre((oop *) dest, count, /*dest_uninitialized*/true); | |
411 Copy::arrayof_conjoint_oops(src, dest, count); | |
412 gen_arraycopy_barrier((oop *) dest, count); | |
413 JRT_END | |
1763 | 414 |
415 address StubRoutines::select_fill_function(BasicType t, bool aligned, const char* &name) { | |
416 #define RETURN_STUB(xxx_fill) { \ | |
417 name = #xxx_fill; \ | |
418 return StubRoutines::xxx_fill(); } | |
419 | |
420 switch (t) { | |
421 case T_BYTE: | |
422 case T_BOOLEAN: | |
423 if (!aligned) RETURN_STUB(jbyte_fill); | |
424 RETURN_STUB(arrayof_jbyte_fill); | |
425 case T_CHAR: | |
426 case T_SHORT: | |
427 if (!aligned) RETURN_STUB(jshort_fill); | |
428 RETURN_STUB(arrayof_jshort_fill); | |
429 case T_INT: | |
430 case T_FLOAT: | |
431 if (!aligned) RETURN_STUB(jint_fill); | |
432 RETURN_STUB(arrayof_jint_fill); | |
433 case T_DOUBLE: | |
434 case T_LONG: | |
435 case T_ARRAY: | |
436 case T_OBJECT: | |
437 case T_NARROWOOP: | |
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438 case T_NARROWKLASS: |
1763 | 439 case T_ADDRESS: |
440 // Currently unsupported | |
441 return NULL; | |
442 | |
443 default: | |
444 ShouldNotReachHere(); | |
445 return NULL; | |
446 } | |
447 | |
448 #undef RETURN_STUB | |
449 } | |
2446 | 450 |
451 // constants for computing the copy function | |
452 enum { | |
453 COPYFUNC_UNALIGNED = 0, | |
454 COPYFUNC_ALIGNED = 1, // src, dest aligned to HeapWordSize | |
455 COPYFUNC_CONJOINT = 0, | |
456 COPYFUNC_DISJOINT = 2 // src != dest, or transfer can descend | |
457 }; | |
458 | |
459 // Note: The condition "disjoint" applies also for overlapping copies | |
460 // where an descending copy is permitted (i.e., dest_offset <= src_offset). | |
461 address | |
462 StubRoutines::select_arraycopy_function(BasicType t, bool aligned, bool disjoint, const char* &name, bool dest_uninitialized) { | |
463 int selector = | |
464 (aligned ? COPYFUNC_ALIGNED : COPYFUNC_UNALIGNED) + | |
465 (disjoint ? COPYFUNC_DISJOINT : COPYFUNC_CONJOINT); | |
466 | |
467 #define RETURN_STUB(xxx_arraycopy) { \ | |
468 name = #xxx_arraycopy; \ | |
469 return StubRoutines::xxx_arraycopy(); } | |
470 | |
471 #define RETURN_STUB_PARM(xxx_arraycopy, parm) { \ | |
472 name = #xxx_arraycopy; \ | |
473 return StubRoutines::xxx_arraycopy(parm); } | |
474 | |
475 switch (t) { | |
476 case T_BYTE: | |
477 case T_BOOLEAN: | |
478 switch (selector) { | |
479 case COPYFUNC_CONJOINT | COPYFUNC_UNALIGNED: RETURN_STUB(jbyte_arraycopy); | |
480 case COPYFUNC_CONJOINT | COPYFUNC_ALIGNED: RETURN_STUB(arrayof_jbyte_arraycopy); | |
481 case COPYFUNC_DISJOINT | COPYFUNC_UNALIGNED: RETURN_STUB(jbyte_disjoint_arraycopy); | |
482 case COPYFUNC_DISJOINT | COPYFUNC_ALIGNED: RETURN_STUB(arrayof_jbyte_disjoint_arraycopy); | |
483 } | |
484 case T_CHAR: | |
485 case T_SHORT: | |
486 switch (selector) { | |
487 case COPYFUNC_CONJOINT | COPYFUNC_UNALIGNED: RETURN_STUB(jshort_arraycopy); | |
488 case COPYFUNC_CONJOINT | COPYFUNC_ALIGNED: RETURN_STUB(arrayof_jshort_arraycopy); | |
489 case COPYFUNC_DISJOINT | COPYFUNC_UNALIGNED: RETURN_STUB(jshort_disjoint_arraycopy); | |
490 case COPYFUNC_DISJOINT | COPYFUNC_ALIGNED: RETURN_STUB(arrayof_jshort_disjoint_arraycopy); | |
491 } | |
492 case T_INT: | |
493 case T_FLOAT: | |
494 switch (selector) { | |
495 case COPYFUNC_CONJOINT | COPYFUNC_UNALIGNED: RETURN_STUB(jint_arraycopy); | |
496 case COPYFUNC_CONJOINT | COPYFUNC_ALIGNED: RETURN_STUB(arrayof_jint_arraycopy); | |
497 case COPYFUNC_DISJOINT | COPYFUNC_UNALIGNED: RETURN_STUB(jint_disjoint_arraycopy); | |
498 case COPYFUNC_DISJOINT | COPYFUNC_ALIGNED: RETURN_STUB(arrayof_jint_disjoint_arraycopy); | |
499 } | |
500 case T_DOUBLE: | |
501 case T_LONG: | |
502 switch (selector) { | |
503 case COPYFUNC_CONJOINT | COPYFUNC_UNALIGNED: RETURN_STUB(jlong_arraycopy); | |
504 case COPYFUNC_CONJOINT | COPYFUNC_ALIGNED: RETURN_STUB(arrayof_jlong_arraycopy); | |
505 case COPYFUNC_DISJOINT | COPYFUNC_UNALIGNED: RETURN_STUB(jlong_disjoint_arraycopy); | |
506 case COPYFUNC_DISJOINT | COPYFUNC_ALIGNED: RETURN_STUB(arrayof_jlong_disjoint_arraycopy); | |
507 } | |
508 case T_ARRAY: | |
509 case T_OBJECT: | |
510 switch (selector) { | |
511 case COPYFUNC_CONJOINT | COPYFUNC_UNALIGNED: RETURN_STUB_PARM(oop_arraycopy, dest_uninitialized); | |
512 case COPYFUNC_CONJOINT | COPYFUNC_ALIGNED: RETURN_STUB_PARM(arrayof_oop_arraycopy, dest_uninitialized); | |
513 case COPYFUNC_DISJOINT | COPYFUNC_UNALIGNED: RETURN_STUB_PARM(oop_disjoint_arraycopy, dest_uninitialized); | |
514 case COPYFUNC_DISJOINT | COPYFUNC_ALIGNED: RETURN_STUB_PARM(arrayof_oop_disjoint_arraycopy, dest_uninitialized); | |
515 } | |
516 default: | |
517 ShouldNotReachHere(); | |
518 return NULL; | |
519 } | |
520 | |
521 #undef RETURN_STUB | |
522 #undef RETURN_STUB_PARM | |
523 } |