jdk8-mips64-public/hotspot: src/share/vm/runtime/stubRoutines.cpp@d93949c5bdcc

6730276: JDI_REGRESSION tests fail with "Error: count must be non-zero" error on x86
Summary: Modify assembler code to check for 0 count for all copy routines.
Reviewed-by: never, ysr, jcoomes

     1 /*

     2  * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.

     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  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #include "incls/_precompiled.incl"

    26 #include "incls/_stubRoutines.cpp.incl"

    29 // Implementation of StubRoutines - for a description

    30 // of how to extend it, see the header file.

    32 // Class Variables

    34 BufferBlob* StubRoutines::_code1                                = NULL;

    35 BufferBlob* StubRoutines::_code2                                = NULL;

    37 address StubRoutines::_call_stub_return_address                 = NULL;

    38 address StubRoutines::_call_stub_entry                          = NULL;

    40 address StubRoutines::_catch_exception_entry                    = NULL;

    41 address StubRoutines::_forward_exception_entry                  = NULL;

    42 address StubRoutines::_throw_AbstractMethodError_entry          = NULL;

    43 address StubRoutines::_throw_IncompatibleClassChangeError_entry = NULL;

    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;

    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 };

    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);

    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);

    96 address StubRoutines::_checkcast_arraycopy               = NULL;

    97 address StubRoutines::_unsafe_arraycopy                  = NULL;

    98 address StubRoutines::_generic_arraycopy                 = NULL;

   100 double (* StubRoutines::_intrinsic_log   )(double) = NULL;

   101 double (* StubRoutines::_intrinsic_log10 )(double) = NULL;

   102 double (* StubRoutines::_intrinsic_exp   )(double) = NULL;

   103 double (* StubRoutines::_intrinsic_pow   )(double, double) = NULL;

   104 double (* StubRoutines::_intrinsic_sin   )(double) = NULL;

   105 double (* StubRoutines::_intrinsic_cos   )(double) = NULL;

   106 double (* StubRoutines::_intrinsic_tan   )(double) = NULL;

   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.)

   114 extern void StubGenerator_generate(CodeBuffer* code, bool all); // only interface to generators

   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);

   121     if (_code1 == NULL) {

   122       vm_exit_out_of_memory(code_size1,

   123                             "CodeCache: no room for StubRoutines (1)");

   124     }

   125     CodeBuffer buffer(_code1->instructions_begin(), _code1->instructions_size());

   126     StubGenerator_generate(&buffer, false);

   127   }

   128 }

   131 #ifdef ASSERT

   132 typedef void (*arraycopy_fn)(address src, address dst, int count);

   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;

   138   jlong lbuffer[8];

   139   jlong lbuffer2[8];

   140   address fbuffer  = (address) lbuffer;

   141   address fbuffer2 = (address) lbuffer2;

   142   unsigned int i;

   143   for (i = 0; i < sizeof(lbuffer); i++) {

   144     fbuffer[i] = v; fbuffer2[i] = v2;

   145   }

   146   // C++ does not guarantee jlong[] array alignment to 8 bytes.

   147   // Use middle of array to check that memory before it is not modified.

   148   address buffer  = (address) round_to((intptr_t)&lbuffer[4], BytesPerLong);

   149   address buffer2 = (address) round_to((intptr_t)&lbuffer2[4], BytesPerLong);

   150   // do an aligned copy

   151   ((arraycopy_fn)func)(buffer, buffer2, 0);

   152   for (i = 0; i < sizeof(lbuffer); i++) {

   153     assert(fbuffer[i] == v && fbuffer2[i] == v2, "shouldn't have copied anything");

   154   }

   155   // adjust destination alignment

   156   ((arraycopy_fn)func)(buffer, buffer2 + alignment, 0);

   157   for (i = 0; i < sizeof(lbuffer); i++) {

   158     assert(fbuffer[i] == v && fbuffer2[i] == v2, "shouldn't have copied anything");

   159   }

   160   // adjust source alignment

   161   ((arraycopy_fn)func)(buffer + alignment, buffer2, 0);

   162   for (i = 0; i < sizeof(lbuffer); i++) {

   163     assert(fbuffer[i] == v && fbuffer2[i] == v2, "shouldn't have copied anything");

   164   }

   165 }

   166 #endif

   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);

   174     if (_code2 == NULL) {

   175       vm_exit_out_of_memory(code_size2,

   176                             "CodeCache: no room for StubRoutines (2)");

   177     }

   178     CodeBuffer buffer(_code2->instructions_begin(), _code2->instructions_size());

   179     StubGenerator_generate(&buffer, true);

   180   }

   182 #ifdef ASSERT

   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))

   190   // Make sure all the arraycopy stubs properly handle zero count

   191   TEST_ARRAYCOPY(jbyte);

   192   TEST_ARRAYCOPY(jshort);

   193   TEST_ARRAYCOPY(jint);

   194   TEST_ARRAYCOPY(jlong);

   196 #undef TEST_ARRAYCOPY

   198 #define TEST_COPYRTN(type) \

   199   test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::conjoint_##type##s_atomic),  sizeof(type)); \

   200   test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::arrayof_conjoint_##type##s), (int)MAX2(sizeof(HeapWord), sizeof(type)))

   202   // Make sure all the copy runtime routines properly handle zero count

   203   TEST_COPYRTN(jbyte);

   204   TEST_COPYRTN(jshort);

   205   TEST_COPYRTN(jint);

   206   TEST_COPYRTN(jlong);

   208 #undef TEST_COPYRTN

   210   test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::conjoint_words), sizeof(HeapWord));

   211   test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::disjoint_words), sizeof(HeapWord));

   212   test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::disjoint_words_atomic), sizeof(HeapWord));

   213   // Aligned to BytesPerLong

   214   test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::aligned_conjoint_words), sizeof(jlong));

   215   test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::aligned_disjoint_words), sizeof(jlong));

   217 #endif

   218 }

   221 void stubRoutines_init1() { StubRoutines::initialize1(); }

   222 void stubRoutines_init2() { StubRoutines::initialize2(); }

   224 //

   225 // Default versions of arraycopy functions

   226 //

   228 static void gen_arraycopy_barrier_pre(oop* dest, size_t count) {

   229     assert(count != 0, "count should be non-zero");

   230     assert(count <= (size_t)max_intx, "count too large");

   231     BarrierSet* bs = Universe::heap()->barrier_set();

   232     assert(bs->has_write_ref_array_pre_opt(), "Must have pre-barrier opt");

   233     bs->write_ref_array_pre(dest, (int)count);

   234 }

   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");

   240     bs->write_ref_array((HeapWord*)dest, count);

   241 }

   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

   247   Copy::conjoint_jbytes_atomic(src, dest, count);

   248 JRT_END

   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

   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

   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

   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");

   276   gen_arraycopy_barrier_pre(dest, count);

   277   Copy::conjoint_oops_atomic(src, dest, count);

   278   gen_arraycopy_barrier(dest, count);

   279 JRT_END

   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

   285   Copy::arrayof_conjoint_jbytes(src, dest, count);

   286 JRT_END

   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

   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

   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

   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");

   314   gen_arraycopy_barrier_pre((oop *) dest, count);

   315   Copy::arrayof_conjoint_oops(src, dest, count);

   316   gen_arraycopy_barrier((oop *) dest, count);

   317 JRT_END

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/runtime/stubRoutines.cpp@d93949c5bdcc

src/share/vm/runtime/stubRoutines.cpp