jdk8-mips64-public/hotspot: src/share/vm/runtime/stubRoutines.cpp@ddb7834449d0

6849984: Value methods for platform dependent math functions constant fold incorrectly
Reviewed-by: kvn, twisti

     1 /*

     2  * Copyright 1997-2010 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any 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) vm_exit_out_of_memory1(code_size1, "CodeCache: no room for %s", "StubRoutines (1)");

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

   123     StubGenerator_generate(&buffer, false);

   124   }

   125 }

   128 #ifdef ASSERT

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

   131 // simple tests of generated arraycopy functions

   132 static void test_arraycopy_func(address func, int alignment) {

   133   int v = 0xcc;

   134   int v2 = 0x11;

   135   jlong lbuffer[2];

   136   jlong lbuffer2[2];

   137   address buffer  = (address) lbuffer;

   138   address buffer2 = (address) lbuffer2;

   139   unsigned int i;

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

   141     buffer[i] = v; buffer2[i] = v2;

   142   }

   143   // do an aligned copy

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

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

   146     assert(buffer[i] == v && buffer2[i] == v2, "shouldn't have copied anything");

   147   }

   148   // adjust destination alignment

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

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

   151     assert(buffer[i] == v && buffer2[i] == v2, "shouldn't have copied anything");

   152   }

   153   // adjust source alignment

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

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

   156     assert(buffer[i] == v && buffer2[i] == v2, "shouldn't have copied anything");

   157   }

   158 }

   159 #endif

   162 void StubRoutines::initialize2() {

   163   if (_code2 == NULL) {

   164     ResourceMark rm;

   165     TraceTime timer("StubRoutines generation 2", TraceStartupTime);

   166     _code2 = BufferBlob::create("StubRoutines (2)", code_size2);

   167     if( _code2 == NULL) vm_exit_out_of_memory1(code_size2, "CodeCache: no room for %s", "StubRoutines (2)");

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

   169     StubGenerator_generate(&buffer, true);

   170   }

   172 #ifdef ASSERT

   174 #define TEST_ARRAYCOPY(type)                                                    \

   175   test_arraycopy_func(          type##_arraycopy(),          sizeof(type));     \

   176   test_arraycopy_func(          type##_disjoint_arraycopy(), sizeof(type));     \

   177   test_arraycopy_func(arrayof_##type##_arraycopy(),          sizeof(HeapWord)); \

   178   test_arraycopy_func(arrayof_##type##_disjoint_arraycopy(), sizeof(HeapWord))

   180   // Make sure all the arraycopy stubs properly handle zeros

   181   TEST_ARRAYCOPY(jbyte);

   182   TEST_ARRAYCOPY(jshort);

   183   TEST_ARRAYCOPY(jint);

   184   TEST_ARRAYCOPY(jlong);

   186 #undef TEST_ARRAYCOPY

   188 #endif

   189 }

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

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

   195 //

   196 // Default versions of arraycopy functions

   197 //

   199 static void gen_arraycopy_barrier(oop* dest, size_t count) {

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

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

   202     assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt");

   203     bs->write_ref_array(MemRegion((HeapWord*)dest, (HeapWord*)(dest + count)));

   204 }

   206 JRT_LEAF(void, StubRoutines::jbyte_copy(jbyte* src, jbyte* dest, size_t count))

   207 #ifndef PRODUCT

   208   SharedRuntime::_jbyte_array_copy_ctr++;      // Slow-path byte array copy

   209 #endif // !PRODUCT

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

   211   Copy::conjoint_bytes_atomic(src, dest, count);

   212 JRT_END

   214 JRT_LEAF(void, StubRoutines::jshort_copy(jshort* src, jshort* dest, size_t count))

   215 #ifndef PRODUCT

   216   SharedRuntime::_jshort_array_copy_ctr++;     // Slow-path short/char array copy

   217 #endif // !PRODUCT

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

   219   Copy::conjoint_jshorts_atomic(src, dest, count);

   220 JRT_END

   222 JRT_LEAF(void, StubRoutines::jint_copy(jint* src, jint* dest, size_t count))

   223 #ifndef PRODUCT

   224   SharedRuntime::_jint_array_copy_ctr++;       // Slow-path int/float array copy

   225 #endif // !PRODUCT

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

   227   Copy::conjoint_jints_atomic(src, dest, count);

   228 JRT_END

   230 JRT_LEAF(void, StubRoutines::jlong_copy(jlong* src, jlong* dest, size_t count))

   231 #ifndef PRODUCT

   232   SharedRuntime::_jlong_array_copy_ctr++;      // Slow-path long/double array copy

   233 #endif // !PRODUCT

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

   235   Copy::conjoint_jlongs_atomic(src, dest, count);

   236 JRT_END

   238 JRT_LEAF(void, StubRoutines::oop_copy(oop* src, oop* dest, size_t count))

   239 #ifndef PRODUCT

   240   SharedRuntime::_oop_array_copy_ctr++;        // Slow-path oop array copy

   241 #endif // !PRODUCT

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

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

   244   gen_arraycopy_barrier(dest, count);

   245 JRT_END

   247 JRT_LEAF(void, StubRoutines::arrayof_jbyte_copy(HeapWord* src, HeapWord* dest, size_t count))

   248 #ifndef PRODUCT

   249   SharedRuntime::_jbyte_array_copy_ctr++;      // Slow-path byte array copy

   250 #endif // !PRODUCT

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

   252   Copy::arrayof_conjoint_bytes(src, dest, count);

   253 JRT_END

   255 JRT_LEAF(void, StubRoutines::arrayof_jshort_copy(HeapWord* src, HeapWord* dest, size_t count))

   256 #ifndef PRODUCT

   257   SharedRuntime::_jshort_array_copy_ctr++;     // Slow-path short/char array copy

   258 #endif // !PRODUCT

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

   260   Copy::arrayof_conjoint_jshorts(src, dest, count);

   261 JRT_END

   263 JRT_LEAF(void, StubRoutines::arrayof_jint_copy(HeapWord* src, HeapWord* dest, size_t count))

   264 #ifndef PRODUCT

   265   SharedRuntime::_jint_array_copy_ctr++;       // Slow-path int/float array copy

   266 #endif // !PRODUCT

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

   268   Copy::arrayof_conjoint_jints(src, dest, count);

   269 JRT_END

   271 JRT_LEAF(void, StubRoutines::arrayof_jlong_copy(HeapWord* src, HeapWord* dest, size_t count))

   272 #ifndef PRODUCT

   273   SharedRuntime::_jlong_array_copy_ctr++;       // Slow-path int/float array copy

   274 #endif // !PRODUCT

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

   276   Copy::arrayof_conjoint_jlongs(src, dest, count);

   277 JRT_END

   279 JRT_LEAF(void, StubRoutines::arrayof_oop_copy(HeapWord* src, HeapWord* dest, size_t count))

   280 #ifndef PRODUCT

   281   SharedRuntime::_oop_array_copy_ctr++;        // Slow-path oop array copy

   282 #endif // !PRODUCT

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

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

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

   286 JRT_END

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

src/share/vm/runtime/stubRoutines.cpp@ddb7834449d0

src/share/vm/runtime/stubRoutines.cpp