Mercurial > hg > truffle
annotate src/share/vm/runtime/stubRoutines.cpp @ 1768:6ee479178066
6979444: add command line option to print command line flags descriptions
Summary: Implementation of a nonproduct boolean flag XX:PrintFlagsWithComments
Reviewed-by: kamg, dholmes, dsamersoff
author | ikrylov |
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date | Tue, 31 Aug 2010 03:14:00 -0700 |
parents | 3e8fbc61cee8 |
children | 14197af1010e |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 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 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_stubRoutines.cpp.incl" | |
27 | |
28 | |
29 // Implementation of StubRoutines - for a description | |
30 // of how to extend it, see the header file. | |
31 | |
32 // Class Variables | |
33 | |
34 BufferBlob* StubRoutines::_code1 = NULL; | |
35 BufferBlob* StubRoutines::_code2 = NULL; | |
36 | |
37 address StubRoutines::_call_stub_return_address = NULL; | |
38 address StubRoutines::_call_stub_entry = NULL; | |
39 | |
40 address StubRoutines::_catch_exception_entry = NULL; | |
41 address StubRoutines::_forward_exception_entry = NULL; | |
42 address StubRoutines::_throw_AbstractMethodError_entry = NULL; | |
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43 address StubRoutines::_throw_IncompatibleClassChangeError_entry = NULL; |
0 | 44 address StubRoutines::_throw_ArithmeticException_entry = NULL; |
45 address StubRoutines::_throw_NullPointerException_entry = NULL; | |
46 address StubRoutines::_throw_NullPointerException_at_call_entry = NULL; | |
47 address StubRoutines::_throw_StackOverflowError_entry = NULL; | |
48 address StubRoutines::_handler_for_unsafe_access_entry = NULL; | |
49 jint StubRoutines::_verify_oop_count = 0; | |
50 address StubRoutines::_verify_oop_subroutine_entry = NULL; | |
51 address StubRoutines::_atomic_xchg_entry = NULL; | |
52 address StubRoutines::_atomic_xchg_ptr_entry = NULL; | |
53 address StubRoutines::_atomic_store_entry = NULL; | |
54 address StubRoutines::_atomic_store_ptr_entry = NULL; | |
55 address StubRoutines::_atomic_cmpxchg_entry = NULL; | |
56 address StubRoutines::_atomic_cmpxchg_ptr_entry = NULL; | |
57 address StubRoutines::_atomic_cmpxchg_long_entry = NULL; | |
58 address StubRoutines::_atomic_add_entry = NULL; | |
59 address StubRoutines::_atomic_add_ptr_entry = NULL; | |
60 address StubRoutines::_fence_entry = NULL; | |
61 address StubRoutines::_d2i_wrapper = NULL; | |
62 address StubRoutines::_d2l_wrapper = NULL; | |
63 | |
64 jint StubRoutines::_fpu_cntrl_wrd_std = 0; | |
65 jint StubRoutines::_fpu_cntrl_wrd_24 = 0; | |
66 jint StubRoutines::_fpu_cntrl_wrd_64 = 0; | |
67 jint StubRoutines::_fpu_cntrl_wrd_trunc = 0; | |
68 jint StubRoutines::_mxcsr_std = 0; | |
69 jint StubRoutines::_fpu_subnormal_bias1[3] = { 0, 0, 0 }; | |
70 jint StubRoutines::_fpu_subnormal_bias2[3] = { 0, 0, 0 }; | |
71 | |
72 // Compiled code entry points default values | |
73 // The dafault functions don't have separate disjoint versions. | |
74 address StubRoutines::_jbyte_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jbyte_copy); | |
75 address StubRoutines::_jshort_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jshort_copy); | |
76 address StubRoutines::_jint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jint_copy); | |
77 address StubRoutines::_jlong_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jlong_copy); | |
78 address StubRoutines::_oop_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::oop_copy); | |
79 address StubRoutines::_jbyte_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jbyte_copy); | |
80 address StubRoutines::_jshort_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jshort_copy); | |
81 address StubRoutines::_jint_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jint_copy); | |
82 address StubRoutines::_jlong_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jlong_copy); | |
83 address StubRoutines::_oop_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::oop_copy); | |
84 | |
85 address StubRoutines::_arrayof_jbyte_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jbyte_copy); | |
86 address StubRoutines::_arrayof_jshort_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jshort_copy); | |
87 address StubRoutines::_arrayof_jint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jint_copy); | |
88 address StubRoutines::_arrayof_jlong_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jlong_copy); | |
89 address StubRoutines::_arrayof_oop_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_oop_copy); | |
90 address StubRoutines::_arrayof_jbyte_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jbyte_copy); | |
91 address StubRoutines::_arrayof_jshort_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jshort_copy); | |
92 address StubRoutines::_arrayof_jint_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jint_copy); | |
93 address StubRoutines::_arrayof_jlong_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jlong_copy); | |
94 address StubRoutines::_arrayof_oop_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_oop_copy); | |
95 | |
96 address StubRoutines::_checkcast_arraycopy = NULL; | |
97 address StubRoutines::_unsafe_arraycopy = NULL; | |
98 address StubRoutines::_generic_arraycopy = NULL; | |
99 | |
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100 double (* StubRoutines::_intrinsic_log )(double) = NULL; |
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101 double (* StubRoutines::_intrinsic_log10 )(double) = NULL; |
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102 double (* StubRoutines::_intrinsic_exp )(double) = NULL; |
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103 double (* StubRoutines::_intrinsic_pow )(double, double) = NULL; |
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104 double (* StubRoutines::_intrinsic_sin )(double) = NULL; |
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105 double (* StubRoutines::_intrinsic_cos )(double) = NULL; |
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106 double (* StubRoutines::_intrinsic_tan )(double) = NULL; |
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107 |
0 | 108 // Initialization |
109 // | |
110 // Note: to break cycle with universe initialization, stubs are generated in two phases. | |
111 // The first one generates stubs needed during universe init (e.g., _handle_must_compile_first_entry). | |
112 // The second phase includes all other stubs (which may depend on universe being initialized.) | |
113 | |
114 extern void StubGenerator_generate(CodeBuffer* code, bool all); // only interface to generators | |
115 | |
116 void StubRoutines::initialize1() { | |
117 if (_code1 == NULL) { | |
118 ResourceMark rm; | |
119 TraceTime timer("StubRoutines generation 1", TraceStartupTime); | |
120 _code1 = BufferBlob::create("StubRoutines (1)", code_size1); | |
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121 if (_code1 == NULL) { |
1748 | 122 vm_exit_out_of_memory(code_size1, "CodeCache: no room for StubRoutines (1)"); |
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123 } |
1748 | 124 CodeBuffer buffer(_code1); |
0 | 125 StubGenerator_generate(&buffer, false); |
126 } | |
127 } | |
128 | |
129 | |
130 #ifdef ASSERT | |
131 typedef void (*arraycopy_fn)(address src, address dst, int count); | |
132 | |
133 // simple tests of generated arraycopy functions | |
134 static void test_arraycopy_func(address func, int alignment) { | |
135 int v = 0xcc; | |
136 int v2 = 0x11; | |
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137 jlong lbuffer[8]; |
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138 jlong lbuffer2[8]; |
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139 address fbuffer = (address) lbuffer; |
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140 address fbuffer2 = (address) lbuffer2; |
0 | 141 unsigned int i; |
142 for (i = 0; i < sizeof(lbuffer); i++) { | |
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143 fbuffer[i] = v; fbuffer2[i] = v2; |
0 | 144 } |
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145 // C++ does not guarantee jlong[] array alignment to 8 bytes. |
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146 // Use middle of array to check that memory before it is not modified. |
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147 address buffer = (address) round_to((intptr_t)&lbuffer[4], BytesPerLong); |
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148 address buffer2 = (address) round_to((intptr_t)&lbuffer2[4], BytesPerLong); |
0 | 149 // do an aligned copy |
150 ((arraycopy_fn)func)(buffer, buffer2, 0); | |
151 for (i = 0; i < sizeof(lbuffer); i++) { | |
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152 assert(fbuffer[i] == v && fbuffer2[i] == v2, "shouldn't have copied anything"); |
0 | 153 } |
154 // adjust destination alignment | |
155 ((arraycopy_fn)func)(buffer, buffer2 + alignment, 0); | |
156 for (i = 0; i < sizeof(lbuffer); i++) { | |
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157 assert(fbuffer[i] == v && fbuffer2[i] == v2, "shouldn't have copied anything"); |
0 | 158 } |
159 // adjust source alignment | |
160 ((arraycopy_fn)func)(buffer + alignment, buffer2, 0); | |
161 for (i = 0; i < sizeof(lbuffer); i++) { | |
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162 assert(fbuffer[i] == v && fbuffer2[i] == v2, "shouldn't have copied anything"); |
0 | 163 } |
164 } | |
165 #endif | |
166 | |
167 | |
168 void StubRoutines::initialize2() { | |
169 if (_code2 == NULL) { | |
170 ResourceMark rm; | |
171 TraceTime timer("StubRoutines generation 2", TraceStartupTime); | |
172 _code2 = BufferBlob::create("StubRoutines (2)", code_size2); | |
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173 if (_code2 == NULL) { |
1748 | 174 vm_exit_out_of_memory(code_size2, "CodeCache: no room for StubRoutines (2)"); |
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175 } |
1748 | 176 CodeBuffer buffer(_code2); |
0 | 177 StubGenerator_generate(&buffer, true); |
178 } | |
179 | |
180 #ifdef ASSERT | |
181 | |
182 #define TEST_ARRAYCOPY(type) \ | |
183 test_arraycopy_func( type##_arraycopy(), sizeof(type)); \ | |
184 test_arraycopy_func( type##_disjoint_arraycopy(), sizeof(type)); \ | |
185 test_arraycopy_func(arrayof_##type##_arraycopy(), sizeof(HeapWord)); \ | |
186 test_arraycopy_func(arrayof_##type##_disjoint_arraycopy(), sizeof(HeapWord)) | |
187 | |
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188 // Make sure all the arraycopy stubs properly handle zero count |
0 | 189 TEST_ARRAYCOPY(jbyte); |
190 TEST_ARRAYCOPY(jshort); | |
191 TEST_ARRAYCOPY(jint); | |
192 TEST_ARRAYCOPY(jlong); | |
193 | |
194 #undef TEST_ARRAYCOPY | |
195 | |
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196 #define TEST_COPYRTN(type) \ |
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197 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::conjoint_##type##s_atomic), sizeof(type)); \ |
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198 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::arrayof_conjoint_##type##s), (int)MAX2(sizeof(HeapWord), sizeof(type))) |
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199 |
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200 // Make sure all the copy runtime routines properly handle zero count |
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201 TEST_COPYRTN(jbyte); |
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202 TEST_COPYRTN(jshort); |
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203 TEST_COPYRTN(jint); |
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204 TEST_COPYRTN(jlong); |
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205 |
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206 #undef TEST_COPYRTN |
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207 |
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208 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::conjoint_words), sizeof(HeapWord)); |
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209 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::disjoint_words), sizeof(HeapWord)); |
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210 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::disjoint_words_atomic), sizeof(HeapWord)); |
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211 // Aligned to BytesPerLong |
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212 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::aligned_conjoint_words), sizeof(jlong)); |
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213 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::aligned_disjoint_words), sizeof(jlong)); |
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214 |
0 | 215 #endif |
216 } | |
217 | |
218 | |
219 void stubRoutines_init1() { StubRoutines::initialize1(); } | |
220 void stubRoutines_init2() { StubRoutines::initialize2(); } | |
221 | |
222 // | |
223 // Default versions of arraycopy functions | |
224 // | |
225 | |
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226 static void gen_arraycopy_barrier_pre(oop* dest, size_t count) { |
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227 assert(count != 0, "count should be non-zero"); |
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228 assert(count <= (size_t)max_intx, "count too large"); |
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229 BarrierSet* bs = Universe::heap()->barrier_set(); |
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230 assert(bs->has_write_ref_array_pre_opt(), "Must have pre-barrier opt"); |
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231 bs->write_ref_array_pre(dest, (int)count); |
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232 } |
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233 |
0 | 234 static void gen_arraycopy_barrier(oop* dest, size_t count) { |
235 assert(count != 0, "count should be non-zero"); | |
236 BarrierSet* bs = Universe::heap()->barrier_set(); | |
237 assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt"); | |
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238 bs->write_ref_array((HeapWord*)dest, count); |
0 | 239 } |
240 | |
241 JRT_LEAF(void, StubRoutines::jbyte_copy(jbyte* src, jbyte* dest, size_t count)) | |
242 #ifndef PRODUCT | |
243 SharedRuntime::_jbyte_array_copy_ctr++; // Slow-path byte array copy | |
244 #endif // !PRODUCT | |
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245 Copy::conjoint_jbytes_atomic(src, dest, count); |
0 | 246 JRT_END |
247 | |
248 JRT_LEAF(void, StubRoutines::jshort_copy(jshort* src, jshort* dest, size_t count)) | |
249 #ifndef PRODUCT | |
250 SharedRuntime::_jshort_array_copy_ctr++; // Slow-path short/char array copy | |
251 #endif // !PRODUCT | |
252 Copy::conjoint_jshorts_atomic(src, dest, count); | |
253 JRT_END | |
254 | |
255 JRT_LEAF(void, StubRoutines::jint_copy(jint* src, jint* dest, size_t count)) | |
256 #ifndef PRODUCT | |
257 SharedRuntime::_jint_array_copy_ctr++; // Slow-path int/float array copy | |
258 #endif // !PRODUCT | |
259 Copy::conjoint_jints_atomic(src, dest, count); | |
260 JRT_END | |
261 | |
262 JRT_LEAF(void, StubRoutines::jlong_copy(jlong* src, jlong* dest, size_t count)) | |
263 #ifndef PRODUCT | |
264 SharedRuntime::_jlong_array_copy_ctr++; // Slow-path long/double array copy | |
265 #endif // !PRODUCT | |
266 Copy::conjoint_jlongs_atomic(src, dest, count); | |
267 JRT_END | |
268 | |
269 JRT_LEAF(void, StubRoutines::oop_copy(oop* src, oop* dest, size_t count)) | |
270 #ifndef PRODUCT | |
271 SharedRuntime::_oop_array_copy_ctr++; // Slow-path oop array copy | |
272 #endif // !PRODUCT | |
273 assert(count != 0, "count should be non-zero"); | |
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274 gen_arraycopy_barrier_pre(dest, count); |
0 | 275 Copy::conjoint_oops_atomic(src, dest, count); |
276 gen_arraycopy_barrier(dest, count); | |
277 JRT_END | |
278 | |
279 JRT_LEAF(void, StubRoutines::arrayof_jbyte_copy(HeapWord* src, HeapWord* dest, size_t count)) | |
280 #ifndef PRODUCT | |
281 SharedRuntime::_jbyte_array_copy_ctr++; // Slow-path byte array copy | |
282 #endif // !PRODUCT | |
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283 Copy::arrayof_conjoint_jbytes(src, dest, count); |
0 | 284 JRT_END |
285 | |
286 JRT_LEAF(void, StubRoutines::arrayof_jshort_copy(HeapWord* src, HeapWord* dest, size_t count)) | |
287 #ifndef PRODUCT | |
288 SharedRuntime::_jshort_array_copy_ctr++; // Slow-path short/char array copy | |
289 #endif // !PRODUCT | |
290 Copy::arrayof_conjoint_jshorts(src, dest, count); | |
291 JRT_END | |
292 | |
293 JRT_LEAF(void, StubRoutines::arrayof_jint_copy(HeapWord* src, HeapWord* dest, size_t count)) | |
294 #ifndef PRODUCT | |
295 SharedRuntime::_jint_array_copy_ctr++; // Slow-path int/float array copy | |
296 #endif // !PRODUCT | |
297 Copy::arrayof_conjoint_jints(src, dest, count); | |
298 JRT_END | |
299 | |
300 JRT_LEAF(void, StubRoutines::arrayof_jlong_copy(HeapWord* src, HeapWord* dest, size_t count)) | |
301 #ifndef PRODUCT | |
302 SharedRuntime::_jlong_array_copy_ctr++; // Slow-path int/float array copy | |
303 #endif // !PRODUCT | |
304 Copy::arrayof_conjoint_jlongs(src, dest, count); | |
305 JRT_END | |
306 | |
307 JRT_LEAF(void, StubRoutines::arrayof_oop_copy(HeapWord* src, HeapWord* dest, size_t count)) | |
308 #ifndef PRODUCT | |
309 SharedRuntime::_oop_array_copy_ctr++; // Slow-path oop array copy | |
310 #endif // !PRODUCT | |
311 assert(count != 0, "count should be non-zero"); | |
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312 gen_arraycopy_barrier_pre((oop *) dest, count); |
0 | 313 Copy::arrayof_conjoint_oops(src, dest, count); |
314 gen_arraycopy_barrier((oop *) dest, count); | |
315 JRT_END |