1 /* 2 * Copyright (c) 1999, 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 */ 24 25 class StubAssembler; 26 27 // The Runtime1 holds all assembly stubs and VM 28 // runtime routines needed by code code generated 29 // by the Compiler1. 30 31 #define RUNTIME1_STUBS(stub, last_entry) \ 32 stub(dtrace_object_alloc) \ 33 stub(unwind_exception) \ 34 stub(forward_exception) \ 35 stub(throw_range_check_failed) /* throws ArrayIndexOutOfBoundsException */ \ 36 stub(throw_index_exception) /* throws IndexOutOfBoundsException */ \ 37 stub(throw_div0_exception) \ 38 stub(throw_null_pointer_exception) \ 39 stub(register_finalizer) \ 40 stub(new_instance) \ 41 stub(fast_new_instance) \ 42 stub(fast_new_instance_init_check) \ 43 stub(new_type_array) \ 44 stub(new_object_array) \ 45 stub(new_multi_array) \ 46 stub(handle_exception_nofpu) /* optimized version that does not preserve fpu registers */ \ 47 stub(handle_exception) \ 48 stub(throw_array_store_exception) \ 49 stub(throw_class_cast_exception) \ 50 stub(throw_incompatible_class_change_error) \ 51 stub(slow_subtype_check) \ 52 stub(monitorenter) \ 53 stub(monitorenter_nofpu) /* optimized version that does not preserve fpu registers */ \ 54 stub(monitorexit) \ 55 stub(monitorexit_nofpu) /* optimized version that does not preserve fpu registers */ \ 56 stub(access_field_patching) \ 57 stub(load_klass_patching) \ 58 stub(jvmti_exception_throw) \ 59 stub(g1_pre_barrier_slow) \ 60 stub(g1_post_barrier_slow) \ 61 stub(fpu2long_stub) \ 62 stub(counter_overflow) \ 63 last_entry(number_of_ids) 64 65 #define DECLARE_STUB_ID(x) x ## _id , 66 #define DECLARE_LAST_STUB_ID(x) x 67 #define STUB_NAME(x) #x " Runtime1 stub", 68 #define LAST_STUB_NAME(x) #x " Runtime1 stub" 69 70 class Runtime1: public AllStatic { 71 friend class VMStructs; 72 friend class ArrayCopyStub; 73 74 public: 75 enum StubID { 76 RUNTIME1_STUBS(DECLARE_STUB_ID, DECLARE_LAST_STUB_ID) 77 }; 78 79 // statistics 80 #ifndef PRODUCT 81 static int _resolve_invoke_cnt; 82 static int _handle_wrong_method_cnt; 83 static int _ic_miss_cnt; 84 static int _generic_arraycopy_cnt; 85 static int _primitive_arraycopy_cnt; 86 static int _oop_arraycopy_cnt; 87 static int _arraycopy_slowcase_cnt; 88 static int _new_type_array_slowcase_cnt; 89 static int _new_object_array_slowcase_cnt; 90 static int _new_instance_slowcase_cnt; 91 static int _new_multi_array_slowcase_cnt; 92 static int _monitorenter_slowcase_cnt; 93 static int _monitorexit_slowcase_cnt; 94 static int _patch_code_slowcase_cnt; 95 static int _throw_range_check_exception_count; 96 static int _throw_index_exception_count; 97 static int _throw_div0_exception_count; 98 static int _throw_null_pointer_exception_count; 99 static int _throw_class_cast_exception_count; 100 static int _throw_incompatible_class_change_error_count; 101 static int _throw_array_store_exception_count; 102 static int _throw_count; 103 #endif 104 105 private: 106 static CodeBlob* _blobs[number_of_ids]; 107 static const char* _blob_names[]; 108 109 // stub generation 110 static void generate_blob_for(BufferBlob* blob, StubID id); 111 static OopMapSet* generate_code_for(StubID id, StubAssembler* masm); 112 static OopMapSet* generate_exception_throw(StubAssembler* sasm, address target, bool has_argument); 113 static void generate_handle_exception(StubAssembler *sasm, OopMapSet* oop_maps, OopMap* oop_map, bool ignore_fpu_registers = false); 114 static void generate_unwind_exception(StubAssembler *sasm); 115 static OopMapSet* generate_patching(StubAssembler* sasm, address target); 116 117 static OopMapSet* generate_stub_call(StubAssembler* sasm, Register result, address entry, 118 Register arg1 = noreg, Register arg2 = noreg, Register arg3 = noreg); 119 120 // runtime entry points 121 static void new_instance (JavaThread* thread, klassOopDesc* klass); 122 static void new_type_array (JavaThread* thread, klassOopDesc* klass, jint length); 123 static void new_object_array(JavaThread* thread, klassOopDesc* klass, jint length); 124 static void new_multi_array (JavaThread* thread, klassOopDesc* klass, int rank, jint* dims); 125 126 static address counter_overflow(JavaThread* thread, int bci, methodOopDesc* method); 127 128 static void unimplemented_entry (JavaThread* thread, StubID id); 129 130 static address exception_handler_for_pc(JavaThread* thread); 131 static void post_jvmti_exception_throw(JavaThread* thread); 132 133 static void throw_range_check_exception(JavaThread* thread, int index); 134 static void throw_index_exception(JavaThread* thread, int index); 135 static void throw_div0_exception(JavaThread* thread); 136 static void throw_null_pointer_exception(JavaThread* thread); 137 static void throw_class_cast_exception(JavaThread* thread, oopDesc* obect); 138 static void throw_incompatible_class_change_error(JavaThread* thread); 139 static void throw_array_store_exception(JavaThread* thread); 140 141 static void monitorenter(JavaThread* thread, oopDesc* obj, BasicObjectLock* lock); 142 static void monitorexit (JavaThread* thread, BasicObjectLock* lock); 143 144 static int access_field_patching(JavaThread* thread); 145 static int move_klass_patching(JavaThread* thread); 146 147 static void patch_code(JavaThread* thread, StubID stub_id); 148 149 public: 150 // initialization 151 static void initialize(BufferBlob* blob); 152 static void initialize_pd(); 153 154 // stubs 155 static CodeBlob* blob_for (StubID id); 156 static address entry_for(StubID id) { return blob_for(id)->code_begin(); } 157 static const char* name_for (StubID id); 158 static const char* name_for_address(address entry); 159 160 // platform might add runtime names. 161 static const char* pd_name_for_address(address entry); 162 163 // method tracing 164 static void trace_block_entry(jint block_id); 165 166 #ifndef PRODUCT 167 static address throw_count_address() { return (address)&_throw_count; } 168 #endif 169 170 // directly accessible leaf routine 171 static int arraycopy(oopDesc* src, int src_pos, oopDesc* dst, int dst_pos, int length); 172 static void primitive_arraycopy(HeapWord* src, HeapWord* dst, int length); 173 static void oop_arraycopy(HeapWord* src, HeapWord* dst, int length); 174 175 static void print_statistics() PRODUCT_RETURN; 176 };