Mercurial > hg > truffle
view src/share/vm/runtime/stubRoutines.cpp @ 690:d142f1feeed5
Merge
author | acorn |
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date | Sun, 29 Mar 2009 18:19:05 -0400 |
parents | f8236e79048a |
children | ddb7834449d0 |
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/* * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ #include "incls/_precompiled.incl" #include "incls/_stubRoutines.cpp.incl" // Implementation of StubRoutines - for a description // of how to extend it, see the header file. // Class Variables BufferBlob* StubRoutines::_code1 = NULL; BufferBlob* StubRoutines::_code2 = NULL; address StubRoutines::_call_stub_return_address = NULL; address StubRoutines::_call_stub_entry = NULL; address StubRoutines::_catch_exception_entry = NULL; address StubRoutines::_forward_exception_entry = NULL; address StubRoutines::_throw_AbstractMethodError_entry = NULL; address StubRoutines::_throw_IncompatibleClassChangeError_entry = NULL; address StubRoutines::_throw_ArithmeticException_entry = NULL; address StubRoutines::_throw_NullPointerException_entry = NULL; address StubRoutines::_throw_NullPointerException_at_call_entry = NULL; address StubRoutines::_throw_StackOverflowError_entry = NULL; address StubRoutines::_handler_for_unsafe_access_entry = NULL; jint StubRoutines::_verify_oop_count = 0; address StubRoutines::_verify_oop_subroutine_entry = NULL; address StubRoutines::_atomic_xchg_entry = NULL; address StubRoutines::_atomic_xchg_ptr_entry = NULL; address StubRoutines::_atomic_store_entry = NULL; address StubRoutines::_atomic_store_ptr_entry = NULL; address StubRoutines::_atomic_cmpxchg_entry = NULL; address StubRoutines::_atomic_cmpxchg_ptr_entry = NULL; address StubRoutines::_atomic_cmpxchg_long_entry = NULL; address StubRoutines::_atomic_add_entry = NULL; address StubRoutines::_atomic_add_ptr_entry = NULL; address StubRoutines::_fence_entry = NULL; address StubRoutines::_d2i_wrapper = NULL; address StubRoutines::_d2l_wrapper = NULL; jint StubRoutines::_fpu_cntrl_wrd_std = 0; jint StubRoutines::_fpu_cntrl_wrd_24 = 0; jint StubRoutines::_fpu_cntrl_wrd_64 = 0; jint StubRoutines::_fpu_cntrl_wrd_trunc = 0; jint StubRoutines::_mxcsr_std = 0; jint StubRoutines::_fpu_subnormal_bias1[3] = { 0, 0, 0 }; jint StubRoutines::_fpu_subnormal_bias2[3] = { 0, 0, 0 }; // Compiled code entry points default values // The dafault functions don't have separate disjoint versions. address StubRoutines::_jbyte_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jbyte_copy); address StubRoutines::_jshort_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jshort_copy); address StubRoutines::_jint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jint_copy); address StubRoutines::_jlong_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jlong_copy); address StubRoutines::_oop_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::oop_copy); address StubRoutines::_jbyte_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jbyte_copy); address StubRoutines::_jshort_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jshort_copy); address StubRoutines::_jint_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jint_copy); address StubRoutines::_jlong_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jlong_copy); address StubRoutines::_oop_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::oop_copy); address StubRoutines::_arrayof_jbyte_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jbyte_copy); address StubRoutines::_arrayof_jshort_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jshort_copy); address StubRoutines::_arrayof_jint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jint_copy); address StubRoutines::_arrayof_jlong_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jlong_copy); address StubRoutines::_arrayof_oop_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_oop_copy); address StubRoutines::_arrayof_jbyte_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jbyte_copy); address StubRoutines::_arrayof_jshort_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jshort_copy); address StubRoutines::_arrayof_jint_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jint_copy); address StubRoutines::_arrayof_jlong_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jlong_copy); address StubRoutines::_arrayof_oop_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_oop_copy); address StubRoutines::_checkcast_arraycopy = NULL; address StubRoutines::_unsafe_arraycopy = NULL; address StubRoutines::_generic_arraycopy = NULL; // Initialization // // Note: to break cycle with universe initialization, stubs are generated in two phases. // The first one generates stubs needed during universe init (e.g., _handle_must_compile_first_entry). // The second phase includes all other stubs (which may depend on universe being initialized.) extern void StubGenerator_generate(CodeBuffer* code, bool all); // only interface to generators void StubRoutines::initialize1() { if (_code1 == NULL) { ResourceMark rm; TraceTime timer("StubRoutines generation 1", TraceStartupTime); _code1 = BufferBlob::create("StubRoutines (1)", code_size1); if( _code1 == NULL) vm_exit_out_of_memory1(code_size1, "CodeCache: no room for %s", "StubRoutines (1)"); CodeBuffer buffer(_code1->instructions_begin(), _code1->instructions_size()); StubGenerator_generate(&buffer, false); } } #ifdef ASSERT typedef void (*arraycopy_fn)(address src, address dst, int count); // simple tests of generated arraycopy functions static void test_arraycopy_func(address func, int alignment) { int v = 0xcc; int v2 = 0x11; jlong lbuffer[2]; jlong lbuffer2[2]; address buffer = (address) lbuffer; address buffer2 = (address) lbuffer2; unsigned int i; for (i = 0; i < sizeof(lbuffer); i++) { buffer[i] = v; buffer2[i] = v2; } // do an aligned copy ((arraycopy_fn)func)(buffer, buffer2, 0); for (i = 0; i < sizeof(lbuffer); i++) { assert(buffer[i] == v && buffer2[i] == v2, "shouldn't have copied anything"); } // adjust destination alignment ((arraycopy_fn)func)(buffer, buffer2 + alignment, 0); for (i = 0; i < sizeof(lbuffer); i++) { assert(buffer[i] == v && buffer2[i] == v2, "shouldn't have copied anything"); } // adjust source alignment ((arraycopy_fn)func)(buffer + alignment, buffer2, 0); for (i = 0; i < sizeof(lbuffer); i++) { assert(buffer[i] == v && buffer2[i] == v2, "shouldn't have copied anything"); } } #endif void StubRoutines::initialize2() { if (_code2 == NULL) { ResourceMark rm; TraceTime timer("StubRoutines generation 2", TraceStartupTime); _code2 = BufferBlob::create("StubRoutines (2)", code_size2); if( _code2 == NULL) vm_exit_out_of_memory1(code_size2, "CodeCache: no room for %s", "StubRoutines (2)"); CodeBuffer buffer(_code2->instructions_begin(), _code2->instructions_size()); StubGenerator_generate(&buffer, true); } #ifdef ASSERT #define TEST_ARRAYCOPY(type) \ test_arraycopy_func( type##_arraycopy(), sizeof(type)); \ test_arraycopy_func( type##_disjoint_arraycopy(), sizeof(type)); \ test_arraycopy_func(arrayof_##type##_arraycopy(), sizeof(HeapWord)); \ test_arraycopy_func(arrayof_##type##_disjoint_arraycopy(), sizeof(HeapWord)) // Make sure all the arraycopy stubs properly handle zeros TEST_ARRAYCOPY(jbyte); TEST_ARRAYCOPY(jshort); TEST_ARRAYCOPY(jint); TEST_ARRAYCOPY(jlong); #undef TEST_ARRAYCOPY #endif } void stubRoutines_init1() { StubRoutines::initialize1(); } void stubRoutines_init2() { StubRoutines::initialize2(); } // // Default versions of arraycopy functions // static void gen_arraycopy_barrier(oop* dest, size_t count) { assert(count != 0, "count should be non-zero"); BarrierSet* bs = Universe::heap()->barrier_set(); assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt"); bs->write_ref_array(MemRegion((HeapWord*)dest, (HeapWord*)(dest + count))); } JRT_LEAF(void, StubRoutines::jbyte_copy(jbyte* src, jbyte* dest, size_t count)) #ifndef PRODUCT SharedRuntime::_jbyte_array_copy_ctr++; // Slow-path byte array copy #endif // !PRODUCT assert(count != 0, "count should be non-zero"); Copy::conjoint_bytes_atomic(src, dest, count); JRT_END JRT_LEAF(void, StubRoutines::jshort_copy(jshort* src, jshort* dest, size_t count)) #ifndef PRODUCT SharedRuntime::_jshort_array_copy_ctr++; // Slow-path short/char array copy #endif // !PRODUCT assert(count != 0, "count should be non-zero"); Copy::conjoint_jshorts_atomic(src, dest, count); JRT_END JRT_LEAF(void, StubRoutines::jint_copy(jint* src, jint* dest, size_t count)) #ifndef PRODUCT SharedRuntime::_jint_array_copy_ctr++; // Slow-path int/float array copy #endif // !PRODUCT assert(count != 0, "count should be non-zero"); Copy::conjoint_jints_atomic(src, dest, count); JRT_END JRT_LEAF(void, StubRoutines::jlong_copy(jlong* src, jlong* dest, size_t count)) #ifndef PRODUCT SharedRuntime::_jlong_array_copy_ctr++; // Slow-path long/double array copy #endif // !PRODUCT assert(count != 0, "count should be non-zero"); Copy::conjoint_jlongs_atomic(src, dest, count); JRT_END JRT_LEAF(void, StubRoutines::oop_copy(oop* src, oop* dest, size_t count)) #ifndef PRODUCT SharedRuntime::_oop_array_copy_ctr++; // Slow-path oop array copy #endif // !PRODUCT assert(count != 0, "count should be non-zero"); Copy::conjoint_oops_atomic(src, dest, count); gen_arraycopy_barrier(dest, count); JRT_END JRT_LEAF(void, StubRoutines::arrayof_jbyte_copy(HeapWord* src, HeapWord* dest, size_t count)) #ifndef PRODUCT SharedRuntime::_jbyte_array_copy_ctr++; // Slow-path byte array copy #endif // !PRODUCT assert(count != 0, "count should be non-zero"); Copy::arrayof_conjoint_bytes(src, dest, count); JRT_END JRT_LEAF(void, StubRoutines::arrayof_jshort_copy(HeapWord* src, HeapWord* dest, size_t count)) #ifndef PRODUCT SharedRuntime::_jshort_array_copy_ctr++; // Slow-path short/char array copy #endif // !PRODUCT assert(count != 0, "count should be non-zero"); Copy::arrayof_conjoint_jshorts(src, dest, count); JRT_END JRT_LEAF(void, StubRoutines::arrayof_jint_copy(HeapWord* src, HeapWord* dest, size_t count)) #ifndef PRODUCT SharedRuntime::_jint_array_copy_ctr++; // Slow-path int/float array copy #endif // !PRODUCT assert(count != 0, "count should be non-zero"); Copy::arrayof_conjoint_jints(src, dest, count); JRT_END JRT_LEAF(void, StubRoutines::arrayof_jlong_copy(HeapWord* src, HeapWord* dest, size_t count)) #ifndef PRODUCT SharedRuntime::_jlong_array_copy_ctr++; // Slow-path int/float array copy #endif // !PRODUCT assert(count != 0, "count should be non-zero"); Copy::arrayof_conjoint_jlongs(src, dest, count); JRT_END JRT_LEAF(void, StubRoutines::arrayof_oop_copy(HeapWord* src, HeapWord* dest, size_t count)) #ifndef PRODUCT SharedRuntime::_oop_array_copy_ctr++; // Slow-path oop array copy #endif // !PRODUCT assert(count != 0, "count should be non-zero"); Copy::arrayof_conjoint_oops(src, dest, count); gen_arraycopy_barrier((oop *) dest, count); JRT_END