--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/runtime/stubRoutines.cpp Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,277 @@
+/*
+ * 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_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