Mercurial > hg > truffle
annotate src/share/vm/runtime/stubRoutines.cpp @ 1721:413ad0331a0c
6977924: Changes for 6975078 produce build error with certain gcc versions
Summary: The changes introduced for 6975078 assign badHeapOopVal to the _allocation field in the ResourceObj class. In 32 bit linux builds with certain versions of gcc this assignment will be flagged as an error while compiling allocation.cpp. In 32 bit builds the constant value badHeapOopVal (which is cast to an intptr_t) is negative. The _allocation field is typed as an unsigned intptr_t and gcc catches this as an error.
Reviewed-by: jcoomes, ysr, phh
| author | johnc |
|---|---|
| date | Wed, 18 Aug 2010 10:59:06 -0700 |
| parents | d93949c5bdcc |
| children | 3e8fbc61cee8 d6f45b55c972 |
| rev | line source |
|---|---|
| 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) { |
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122 vm_exit_out_of_memory(code_size1, |
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123 "CodeCache: no room for StubRoutines (1)"); |
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124 } |
| 0 | 125 CodeBuffer buffer(_code1->instructions_begin(), _code1->instructions_size()); |
| 126 StubGenerator_generate(&buffer, false); | |
| 127 } | |
| 128 } | |
| 129 | |
| 130 | |
| 131 #ifdef ASSERT | |
| 132 typedef void (*arraycopy_fn)(address src, address dst, int count); | |
| 133 | |
| 134 // simple tests of generated arraycopy functions | |
| 135 static void test_arraycopy_func(address func, int alignment) { | |
| 136 int v = 0xcc; | |
| 137 int v2 = 0x11; | |
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138 jlong lbuffer[8]; |
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139 jlong lbuffer2[8]; |
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140 address fbuffer = (address) lbuffer; |
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141 address fbuffer2 = (address) lbuffer2; |
| 0 | 142 unsigned int i; |
| 143 for (i = 0; i < sizeof(lbuffer); i++) { | |
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144 fbuffer[i] = v; fbuffer2[i] = v2; |
| 0 | 145 } |
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146 // C++ does not guarantee jlong[] array alignment to 8 bytes. |
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147 // Use middle of array to check that memory before it is not modified. |
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148 address buffer = (address) round_to((intptr_t)&lbuffer[4], BytesPerLong); |
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149 address buffer2 = (address) round_to((intptr_t)&lbuffer2[4], BytesPerLong); |
| 0 | 150 // do an aligned copy |
| 151 ((arraycopy_fn)func)(buffer, buffer2, 0); | |
| 152 for (i = 0; i < sizeof(lbuffer); i++) { | |
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153 assert(fbuffer[i] == v && fbuffer2[i] == v2, "shouldn't have copied anything"); |
| 0 | 154 } |
| 155 // adjust destination alignment | |
| 156 ((arraycopy_fn)func)(buffer, buffer2 + alignment, 0); | |
| 157 for (i = 0; i < sizeof(lbuffer); i++) { | |
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158 assert(fbuffer[i] == v && fbuffer2[i] == v2, "shouldn't have copied anything"); |
| 0 | 159 } |
| 160 // adjust source alignment | |
| 161 ((arraycopy_fn)func)(buffer + alignment, buffer2, 0); | |
| 162 for (i = 0; i < sizeof(lbuffer); i++) { | |
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163 assert(fbuffer[i] == v && fbuffer2[i] == v2, "shouldn't have copied anything"); |
| 0 | 164 } |
| 165 } | |
| 166 #endif | |
| 167 | |
| 168 | |
| 169 void StubRoutines::initialize2() { | |
| 170 if (_code2 == NULL) { | |
| 171 ResourceMark rm; | |
| 172 TraceTime timer("StubRoutines generation 2", TraceStartupTime); | |
| 173 _code2 = BufferBlob::create("StubRoutines (2)", code_size2); | |
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174 if (_code2 == NULL) { |
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175 vm_exit_out_of_memory(code_size2, |
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176 "CodeCache: no room for StubRoutines (2)"); |
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177 } |
| 0 | 178 CodeBuffer buffer(_code2->instructions_begin(), _code2->instructions_size()); |
| 179 StubGenerator_generate(&buffer, true); | |
| 180 } | |
| 181 | |
| 182 #ifdef ASSERT | |
| 183 | |
| 184 #define TEST_ARRAYCOPY(type) \ | |
| 185 test_arraycopy_func( type##_arraycopy(), sizeof(type)); \ | |
| 186 test_arraycopy_func( type##_disjoint_arraycopy(), sizeof(type)); \ | |
| 187 test_arraycopy_func(arrayof_##type##_arraycopy(), sizeof(HeapWord)); \ | |
| 188 test_arraycopy_func(arrayof_##type##_disjoint_arraycopy(), sizeof(HeapWord)) | |
| 189 | |
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190 // Make sure all the arraycopy stubs properly handle zero count |
| 0 | 191 TEST_ARRAYCOPY(jbyte); |
| 192 TEST_ARRAYCOPY(jshort); | |
| 193 TEST_ARRAYCOPY(jint); | |
| 194 TEST_ARRAYCOPY(jlong); | |
| 195 | |
| 196 #undef TEST_ARRAYCOPY | |
| 197 | |
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198 #define TEST_COPYRTN(type) \ |
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199 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::conjoint_##type##s_atomic), sizeof(type)); \ |
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200 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::arrayof_conjoint_##type##s), (int)MAX2(sizeof(HeapWord), sizeof(type))) |
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201 |
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202 // Make sure all the copy runtime routines properly handle zero count |
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203 TEST_COPYRTN(jbyte); |
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204 TEST_COPYRTN(jshort); |
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205 TEST_COPYRTN(jint); |
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206 TEST_COPYRTN(jlong); |
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207 |
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208 #undef TEST_COPYRTN |
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209 |
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210 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::conjoint_words), sizeof(HeapWord)); |
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211 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::disjoint_words), sizeof(HeapWord)); |
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212 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::disjoint_words_atomic), sizeof(HeapWord)); |
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213 // Aligned to BytesPerLong |
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214 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::aligned_conjoint_words), sizeof(jlong)); |
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215 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::aligned_disjoint_words), sizeof(jlong)); |
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216 |
| 0 | 217 #endif |
| 218 } | |
| 219 | |
| 220 | |
| 221 void stubRoutines_init1() { StubRoutines::initialize1(); } | |
| 222 void stubRoutines_init2() { StubRoutines::initialize2(); } | |
| 223 | |
| 224 // | |
| 225 // Default versions of arraycopy functions | |
| 226 // | |
| 227 | |
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228 static void gen_arraycopy_barrier_pre(oop* dest, size_t count) { |
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229 assert(count != 0, "count should be non-zero"); |
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230 assert(count <= (size_t)max_intx, "count too large"); |
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231 BarrierSet* bs = Universe::heap()->barrier_set(); |
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232 assert(bs->has_write_ref_array_pre_opt(), "Must have pre-barrier opt"); |
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233 bs->write_ref_array_pre(dest, (int)count); |
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234 } |
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235 |
| 0 | 236 static void gen_arraycopy_barrier(oop* dest, size_t count) { |
| 237 assert(count != 0, "count should be non-zero"); | |
| 238 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 239 assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt"); | |
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240 bs->write_ref_array((HeapWord*)dest, count); |
| 0 | 241 } |
| 242 | |
| 243 JRT_LEAF(void, StubRoutines::jbyte_copy(jbyte* src, jbyte* dest, size_t count)) | |
| 244 #ifndef PRODUCT | |
| 245 SharedRuntime::_jbyte_array_copy_ctr++; // Slow-path byte array copy | |
| 246 #endif // !PRODUCT | |
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247 Copy::conjoint_jbytes_atomic(src, dest, count); |
| 0 | 248 JRT_END |
| 249 | |
| 250 JRT_LEAF(void, StubRoutines::jshort_copy(jshort* src, jshort* dest, size_t count)) | |
| 251 #ifndef PRODUCT | |
| 252 SharedRuntime::_jshort_array_copy_ctr++; // Slow-path short/char array copy | |
| 253 #endif // !PRODUCT | |
| 254 Copy::conjoint_jshorts_atomic(src, dest, count); | |
| 255 JRT_END | |
| 256 | |
| 257 JRT_LEAF(void, StubRoutines::jint_copy(jint* src, jint* dest, size_t count)) | |
| 258 #ifndef PRODUCT | |
| 259 SharedRuntime::_jint_array_copy_ctr++; // Slow-path int/float array copy | |
| 260 #endif // !PRODUCT | |
| 261 Copy::conjoint_jints_atomic(src, dest, count); | |
| 262 JRT_END | |
| 263 | |
| 264 JRT_LEAF(void, StubRoutines::jlong_copy(jlong* src, jlong* dest, size_t count)) | |
| 265 #ifndef PRODUCT | |
| 266 SharedRuntime::_jlong_array_copy_ctr++; // Slow-path long/double array copy | |
| 267 #endif // !PRODUCT | |
| 268 Copy::conjoint_jlongs_atomic(src, dest, count); | |
| 269 JRT_END | |
| 270 | |
| 271 JRT_LEAF(void, StubRoutines::oop_copy(oop* src, oop* dest, size_t count)) | |
| 272 #ifndef PRODUCT | |
| 273 SharedRuntime::_oop_array_copy_ctr++; // Slow-path oop array copy | |
| 274 #endif // !PRODUCT | |
| 275 assert(count != 0, "count should be non-zero"); | |
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276 gen_arraycopy_barrier_pre(dest, count); |
| 0 | 277 Copy::conjoint_oops_atomic(src, dest, count); |
| 278 gen_arraycopy_barrier(dest, count); | |
| 279 JRT_END | |
| 280 | |
| 281 JRT_LEAF(void, StubRoutines::arrayof_jbyte_copy(HeapWord* src, HeapWord* dest, size_t count)) | |
| 282 #ifndef PRODUCT | |
| 283 SharedRuntime::_jbyte_array_copy_ctr++; // Slow-path byte array copy | |
| 284 #endif // !PRODUCT | |
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285 Copy::arrayof_conjoint_jbytes(src, dest, count); |
| 0 | 286 JRT_END |
| 287 | |
| 288 JRT_LEAF(void, StubRoutines::arrayof_jshort_copy(HeapWord* src, HeapWord* dest, size_t count)) | |
| 289 #ifndef PRODUCT | |
| 290 SharedRuntime::_jshort_array_copy_ctr++; // Slow-path short/char array copy | |
| 291 #endif // !PRODUCT | |
| 292 Copy::arrayof_conjoint_jshorts(src, dest, count); | |
| 293 JRT_END | |
| 294 | |
| 295 JRT_LEAF(void, StubRoutines::arrayof_jint_copy(HeapWord* src, HeapWord* dest, size_t count)) | |
| 296 #ifndef PRODUCT | |
| 297 SharedRuntime::_jint_array_copy_ctr++; // Slow-path int/float array copy | |
| 298 #endif // !PRODUCT | |
| 299 Copy::arrayof_conjoint_jints(src, dest, count); | |
| 300 JRT_END | |
| 301 | |
| 302 JRT_LEAF(void, StubRoutines::arrayof_jlong_copy(HeapWord* src, HeapWord* dest, size_t count)) | |
| 303 #ifndef PRODUCT | |
| 304 SharedRuntime::_jlong_array_copy_ctr++; // Slow-path int/float array copy | |
| 305 #endif // !PRODUCT | |
| 306 Copy::arrayof_conjoint_jlongs(src, dest, count); | |
| 307 JRT_END | |
| 308 | |
| 309 JRT_LEAF(void, StubRoutines::arrayof_oop_copy(HeapWord* src, HeapWord* dest, size_t count)) | |
| 310 #ifndef PRODUCT | |
| 311 SharedRuntime::_oop_array_copy_ctr++; // Slow-path oop array copy | |
| 312 #endif // !PRODUCT | |
| 313 assert(count != 0, "count should be non-zero"); | |
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314 gen_arraycopy_barrier_pre((oop *) dest, count); |
| 0 | 315 Copy::arrayof_conjoint_oops(src, dest, count); |
| 316 gen_arraycopy_barrier((oop *) dest, count); | |
| 317 JRT_END |