annotate src/share/vm/runtime/stubRoutines.cpp @ 2333:f767174aac14

7021653: Parfait issue in hotspot/src/share/vm/oops/methodDataOops.hpp Summary: Fix compilation error(s) Reviewed-by: kvn, phh, jcoomes, dholmes
author coleenp
date Thu, 03 Mar 2011 19:53:03 -0500
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children 0ac769a57c64
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1 /*
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2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #include "precompiled.hpp"
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26 #include "asm/codeBuffer.hpp"
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27 #include "memory/resourceArea.hpp"
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28 #include "oops/oop.inline.hpp"
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29 #include "runtime/interfaceSupport.hpp"
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30 #include "runtime/sharedRuntime.hpp"
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31 #include "runtime/stubRoutines.hpp"
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32 #include "runtime/timer.hpp"
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33 #include "utilities/copy.hpp"
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34 #ifdef COMPILER2
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35 #include "opto/runtime.hpp"
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36 #endif
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37
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38
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39 // Implementation of StubRoutines - for a description
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40 // of how to extend it, see the header file.
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41
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42 // Class Variables
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43
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44 BufferBlob* StubRoutines::_code1 = NULL;
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45 BufferBlob* StubRoutines::_code2 = NULL;
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46
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47 address StubRoutines::_call_stub_return_address = NULL;
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48 address StubRoutines::_call_stub_entry = NULL;
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49
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50 address StubRoutines::_catch_exception_entry = NULL;
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51 address StubRoutines::_forward_exception_entry = NULL;
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52 address StubRoutines::_throw_AbstractMethodError_entry = NULL;
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53 address StubRoutines::_throw_IncompatibleClassChangeError_entry = NULL;
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54 address StubRoutines::_throw_ArithmeticException_entry = NULL;
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55 address StubRoutines::_throw_NullPointerException_entry = NULL;
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56 address StubRoutines::_throw_NullPointerException_at_call_entry = NULL;
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57 address StubRoutines::_throw_StackOverflowError_entry = NULL;
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58 address StubRoutines::_handler_for_unsafe_access_entry = NULL;
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59 jint StubRoutines::_verify_oop_count = 0;
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60 address StubRoutines::_verify_oop_subroutine_entry = NULL;
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61 address StubRoutines::_atomic_xchg_entry = NULL;
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62 address StubRoutines::_atomic_xchg_ptr_entry = NULL;
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63 address StubRoutines::_atomic_store_entry = NULL;
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64 address StubRoutines::_atomic_store_ptr_entry = NULL;
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65 address StubRoutines::_atomic_cmpxchg_entry = NULL;
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66 address StubRoutines::_atomic_cmpxchg_ptr_entry = NULL;
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67 address StubRoutines::_atomic_cmpxchg_long_entry = NULL;
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68 address StubRoutines::_atomic_add_entry = NULL;
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69 address StubRoutines::_atomic_add_ptr_entry = NULL;
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70 address StubRoutines::_fence_entry = NULL;
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71 address StubRoutines::_d2i_wrapper = NULL;
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72 address StubRoutines::_d2l_wrapper = NULL;
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73
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74 jint StubRoutines::_fpu_cntrl_wrd_std = 0;
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75 jint StubRoutines::_fpu_cntrl_wrd_24 = 0;
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76 jint StubRoutines::_fpu_cntrl_wrd_64 = 0;
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77 jint StubRoutines::_fpu_cntrl_wrd_trunc = 0;
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78 jint StubRoutines::_mxcsr_std = 0;
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79 jint StubRoutines::_fpu_subnormal_bias1[3] = { 0, 0, 0 };
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80 jint StubRoutines::_fpu_subnormal_bias2[3] = { 0, 0, 0 };
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81
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82 // Compiled code entry points default values
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83 // The dafault functions don't have separate disjoint versions.
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84 address StubRoutines::_jbyte_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jbyte_copy);
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85 address StubRoutines::_jshort_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jshort_copy);
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86 address StubRoutines::_jint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jint_copy);
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87 address StubRoutines::_jlong_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jlong_copy);
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88 address StubRoutines::_oop_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::oop_copy);
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89 address StubRoutines::_jbyte_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jbyte_copy);
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90 address StubRoutines::_jshort_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jshort_copy);
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91 address StubRoutines::_jint_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jint_copy);
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92 address StubRoutines::_jlong_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jlong_copy);
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93 address StubRoutines::_oop_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::oop_copy);
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94
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95 address StubRoutines::_arrayof_jbyte_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jbyte_copy);
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96 address StubRoutines::_arrayof_jshort_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jshort_copy);
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97 address StubRoutines::_arrayof_jint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jint_copy);
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98 address StubRoutines::_arrayof_jlong_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jlong_copy);
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99 address StubRoutines::_arrayof_oop_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_oop_copy);
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100 address StubRoutines::_arrayof_jbyte_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jbyte_copy);
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101 address StubRoutines::_arrayof_jshort_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jshort_copy);
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102 address StubRoutines::_arrayof_jint_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jint_copy);
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103 address StubRoutines::_arrayof_jlong_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jlong_copy);
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104 address StubRoutines::_arrayof_oop_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_oop_copy);
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105
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106 address StubRoutines::_checkcast_arraycopy = NULL;
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107 address StubRoutines::_unsafe_arraycopy = NULL;
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108 address StubRoutines::_generic_arraycopy = NULL;
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109
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110
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111 address StubRoutines::_jbyte_fill;
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112 address StubRoutines::_jshort_fill;
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113 address StubRoutines::_jint_fill;
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114 address StubRoutines::_arrayof_jbyte_fill;
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115 address StubRoutines::_arrayof_jshort_fill;
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116 address StubRoutines::_arrayof_jint_fill;
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117
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118
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119 double (* StubRoutines::_intrinsic_log )(double) = NULL;
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120 double (* StubRoutines::_intrinsic_log10 )(double) = NULL;
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121 double (* StubRoutines::_intrinsic_exp )(double) = NULL;
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122 double (* StubRoutines::_intrinsic_pow )(double, double) = NULL;
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123 double (* StubRoutines::_intrinsic_sin )(double) = NULL;
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124 double (* StubRoutines::_intrinsic_cos )(double) = NULL;
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125 double (* StubRoutines::_intrinsic_tan )(double) = NULL;
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126
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127 // Initialization
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128 //
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129 // Note: to break cycle with universe initialization, stubs are generated in two phases.
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130 // The first one generates stubs needed during universe init (e.g., _handle_must_compile_first_entry).
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131 // The second phase includes all other stubs (which may depend on universe being initialized.)
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132
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133 extern void StubGenerator_generate(CodeBuffer* code, bool all); // only interface to generators
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134
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135 void StubRoutines::initialize1() {
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136 if (_code1 == NULL) {
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137 ResourceMark rm;
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138 TraceTime timer("StubRoutines generation 1", TraceStartupTime);
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139 _code1 = BufferBlob::create("StubRoutines (1)", code_size1);
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140 if (_code1 == NULL) {
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141 vm_exit_out_of_memory(code_size1, "CodeCache: no room for StubRoutines (1)");
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142 }
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143 CodeBuffer buffer(_code1);
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144 StubGenerator_generate(&buffer, false);
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145 }
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146 }
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147
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148
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149 #ifdef ASSERT
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150 typedef void (*arraycopy_fn)(address src, address dst, int count);
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151
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152 // simple tests of generated arraycopy functions
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153 static void test_arraycopy_func(address func, int alignment) {
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154 int v = 0xcc;
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155 int v2 = 0x11;
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156 jlong lbuffer[8];
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157 jlong lbuffer2[8];
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158 address fbuffer = (address) lbuffer;
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159 address fbuffer2 = (address) lbuffer2;
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160 unsigned int i;
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161 for (i = 0; i < sizeof(lbuffer); i++) {
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162 fbuffer[i] = v; fbuffer2[i] = v2;
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163 }
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164 // C++ does not guarantee jlong[] array alignment to 8 bytes.
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165 // Use middle of array to check that memory before it is not modified.
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166 address buffer = (address) round_to((intptr_t)&lbuffer[4], BytesPerLong);
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167 address buffer2 = (address) round_to((intptr_t)&lbuffer2[4], BytesPerLong);
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168 // do an aligned copy
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169 ((arraycopy_fn)func)(buffer, buffer2, 0);
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170 for (i = 0; i < sizeof(lbuffer); i++) {
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171 assert(fbuffer[i] == v && fbuffer2[i] == v2, "shouldn't have copied anything");
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172 }
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173 // adjust destination alignment
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174 ((arraycopy_fn)func)(buffer, buffer2 + alignment, 0);
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175 for (i = 0; i < sizeof(lbuffer); i++) {
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176 assert(fbuffer[i] == v && fbuffer2[i] == v2, "shouldn't have copied anything");
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177 }
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178 // adjust source alignment
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179 ((arraycopy_fn)func)(buffer + alignment, buffer2, 0);
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180 for (i = 0; i < sizeof(lbuffer); i++) {
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181 assert(fbuffer[i] == v && fbuffer2[i] == v2, "shouldn't have copied anything");
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182 }
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183 }
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184 #endif
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185
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186
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187 void StubRoutines::initialize2() {
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188 if (_code2 == NULL) {
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189 ResourceMark rm;
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190 TraceTime timer("StubRoutines generation 2", TraceStartupTime);
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191 _code2 = BufferBlob::create("StubRoutines (2)", code_size2);
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192 if (_code2 == NULL) {
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193 vm_exit_out_of_memory(code_size2, "CodeCache: no room for StubRoutines (2)");
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194 }
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195 CodeBuffer buffer(_code2);
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196 StubGenerator_generate(&buffer, true);
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197 }
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198
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199 #ifdef ASSERT
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200
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201 #define TEST_ARRAYCOPY(type) \
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202 test_arraycopy_func( type##_arraycopy(), sizeof(type)); \
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203 test_arraycopy_func( type##_disjoint_arraycopy(), sizeof(type)); \
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204 test_arraycopy_func(arrayof_##type##_arraycopy(), sizeof(HeapWord)); \
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205 test_arraycopy_func(arrayof_##type##_disjoint_arraycopy(), sizeof(HeapWord))
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206
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207 // Make sure all the arraycopy stubs properly handle zero count
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208 TEST_ARRAYCOPY(jbyte);
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209 TEST_ARRAYCOPY(jshort);
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210 TEST_ARRAYCOPY(jint);
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211 TEST_ARRAYCOPY(jlong);
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212
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213 #undef TEST_ARRAYCOPY
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214
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215 #define TEST_FILL(type) \
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216 if (_##type##_fill != NULL) { \
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217 union { \
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218 double d; \
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219 type body[96]; \
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220 } s; \
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221 \
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222 int v = 32; \
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223 for (int offset = -2; offset <= 2; offset++) { \
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224 for (int i = 0; i < 96; i++) { \
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225 s.body[i] = 1; \
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226 } \
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227 type* start = s.body + 8 + offset; \
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228 for (int aligned = 0; aligned < 2; aligned++) { \
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229 if (aligned) { \
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230 if (((intptr_t)start) % HeapWordSize == 0) { \
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231 ((void (*)(type*, int, int))StubRoutines::_arrayof_##type##_fill)(start, v, 80); \
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232 } else { \
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233 continue; \
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234 } \
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235 } else { \
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236 ((void (*)(type*, int, int))StubRoutines::_##type##_fill)(start, v, 80); \
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237 } \
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238 for (int i = 0; i < 96; i++) { \
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239 if (i < (8 + offset) || i >= (88 + offset)) { \
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240 assert(s.body[i] == 1, "what?"); \
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241 } else { \
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242 assert(s.body[i] == 32, "what?"); \
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243 } \
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244 } \
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245 } \
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246 } \
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247 } \
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248
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249 TEST_FILL(jbyte);
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250 TEST_FILL(jshort);
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251 TEST_FILL(jint);
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252
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253 #undef TEST_FILL
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254
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255 #define TEST_COPYRTN(type) \
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256 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::conjoint_##type##s_atomic), sizeof(type)); \
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257 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::arrayof_conjoint_##type##s), (int)MAX2(sizeof(HeapWord), sizeof(type)))
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258
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259 // Make sure all the copy runtime routines properly handle zero count
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260 TEST_COPYRTN(jbyte);
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261 TEST_COPYRTN(jshort);
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262 TEST_COPYRTN(jint);
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263 TEST_COPYRTN(jlong);
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264
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265 #undef TEST_COPYRTN
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266
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267 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::conjoint_words), sizeof(HeapWord));
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268 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::disjoint_words), sizeof(HeapWord));
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269 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::disjoint_words_atomic), sizeof(HeapWord));
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270 // Aligned to BytesPerLong
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271 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::aligned_conjoint_words), sizeof(jlong));
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272 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::aligned_disjoint_words), sizeof(jlong));
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273
0
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274 #endif
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275 }
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276
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277
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278 void stubRoutines_init1() { StubRoutines::initialize1(); }
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279 void stubRoutines_init2() { StubRoutines::initialize2(); }
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280
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281 //
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282 // Default versions of arraycopy functions
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283 //
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284
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285 static void gen_arraycopy_barrier_pre(oop* dest, size_t count) {
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286 assert(count != 0, "count should be non-zero");
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287 assert(count <= (size_t)max_intx, "count too large");
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288 BarrierSet* bs = Universe::heap()->barrier_set();
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289 assert(bs->has_write_ref_array_pre_opt(), "Must have pre-barrier opt");
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290 bs->write_ref_array_pre(dest, (int)count);
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291 }
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292
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293 static void gen_arraycopy_barrier(oop* dest, size_t count) {
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294 assert(count != 0, "count should be non-zero");
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295 BarrierSet* bs = Universe::heap()->barrier_set();
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296 assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt");
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297 bs->write_ref_array((HeapWord*)dest, count);
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298 }
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299
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300 JRT_LEAF(void, StubRoutines::jbyte_copy(jbyte* src, jbyte* dest, size_t count))
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301 #ifndef PRODUCT
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302 SharedRuntime::_jbyte_array_copy_ctr++; // Slow-path byte array copy
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303 #endif // !PRODUCT
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304 Copy::conjoint_jbytes_atomic(src, dest, count);
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305 JRT_END
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306
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307 JRT_LEAF(void, StubRoutines::jshort_copy(jshort* src, jshort* dest, size_t count))
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308 #ifndef PRODUCT
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309 SharedRuntime::_jshort_array_copy_ctr++; // Slow-path short/char array copy
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310 #endif // !PRODUCT
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311 Copy::conjoint_jshorts_atomic(src, dest, count);
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312 JRT_END
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313
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314 JRT_LEAF(void, StubRoutines::jint_copy(jint* src, jint* dest, size_t count))
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315 #ifndef PRODUCT
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316 SharedRuntime::_jint_array_copy_ctr++; // Slow-path int/float array copy
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317 #endif // !PRODUCT
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318 Copy::conjoint_jints_atomic(src, dest, count);
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319 JRT_END
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320
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321 JRT_LEAF(void, StubRoutines::jlong_copy(jlong* src, jlong* dest, size_t count))
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322 #ifndef PRODUCT
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323 SharedRuntime::_jlong_array_copy_ctr++; // Slow-path long/double array copy
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324 #endif // !PRODUCT
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325 Copy::conjoint_jlongs_atomic(src, dest, count);
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326 JRT_END
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327
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328 JRT_LEAF(void, StubRoutines::oop_copy(oop* src, oop* dest, size_t count))
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329 #ifndef PRODUCT
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330 SharedRuntime::_oop_array_copy_ctr++; // Slow-path oop array copy
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331 #endif // !PRODUCT
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332 assert(count != 0, "count should be non-zero");
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333 gen_arraycopy_barrier_pre(dest, count);
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334 Copy::conjoint_oops_atomic(src, dest, count);
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335 gen_arraycopy_barrier(dest, count);
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336 JRT_END
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337
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338 JRT_LEAF(void, StubRoutines::arrayof_jbyte_copy(HeapWord* src, HeapWord* dest, size_t count))
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339 #ifndef PRODUCT
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340 SharedRuntime::_jbyte_array_copy_ctr++; // Slow-path byte array copy
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341 #endif // !PRODUCT
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342 Copy::arrayof_conjoint_jbytes(src, dest, count);
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343 JRT_END
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344
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345 JRT_LEAF(void, StubRoutines::arrayof_jshort_copy(HeapWord* src, HeapWord* dest, size_t count))
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346 #ifndef PRODUCT
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347 SharedRuntime::_jshort_array_copy_ctr++; // Slow-path short/char array copy
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348 #endif // !PRODUCT
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349 Copy::arrayof_conjoint_jshorts(src, dest, count);
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350 JRT_END
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351
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352 JRT_LEAF(void, StubRoutines::arrayof_jint_copy(HeapWord* src, HeapWord* dest, size_t count))
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353 #ifndef PRODUCT
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354 SharedRuntime::_jint_array_copy_ctr++; // Slow-path int/float array copy
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355 #endif // !PRODUCT
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356 Copy::arrayof_conjoint_jints(src, dest, count);
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357 JRT_END
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358
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359 JRT_LEAF(void, StubRoutines::arrayof_jlong_copy(HeapWord* src, HeapWord* dest, size_t count))
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360 #ifndef PRODUCT
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361 SharedRuntime::_jlong_array_copy_ctr++; // Slow-path int/float array copy
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362 #endif // !PRODUCT
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363 Copy::arrayof_conjoint_jlongs(src, dest, count);
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364 JRT_END
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365
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366 JRT_LEAF(void, StubRoutines::arrayof_oop_copy(HeapWord* src, HeapWord* dest, size_t count))
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367 #ifndef PRODUCT
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368 SharedRuntime::_oop_array_copy_ctr++; // Slow-path oop array copy
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369 #endif // !PRODUCT
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370 assert(count != 0, "count should be non-zero");
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6484c4ee11cb 6904516: More object array barrier fixes, following up on 6906727
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371 gen_arraycopy_barrier_pre((oop *) dest, count);
0
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372 Copy::arrayof_conjoint_oops(src, dest, count);
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373 gen_arraycopy_barrier((oop *) dest, count);
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374 JRT_END
1763
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375
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376
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377 address StubRoutines::select_fill_function(BasicType t, bool aligned, const char* &name) {
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378 #define RETURN_STUB(xxx_fill) { \
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379 name = #xxx_fill; \
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380 return StubRoutines::xxx_fill(); }
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381
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382 switch (t) {
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383 case T_BYTE:
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384 case T_BOOLEAN:
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385 if (!aligned) RETURN_STUB(jbyte_fill);
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386 RETURN_STUB(arrayof_jbyte_fill);
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387 case T_CHAR:
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388 case T_SHORT:
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389 if (!aligned) RETURN_STUB(jshort_fill);
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390 RETURN_STUB(arrayof_jshort_fill);
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391 case T_INT:
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392 case T_FLOAT:
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393 if (!aligned) RETURN_STUB(jint_fill);
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394 RETURN_STUB(arrayof_jint_fill);
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395 case T_DOUBLE:
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396 case T_LONG:
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397 case T_ARRAY:
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398 case T_OBJECT:
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399 case T_NARROWOOP:
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400 case T_ADDRESS:
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401 // Currently unsupported
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402 return NULL;
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403
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404 default:
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405 ShouldNotReachHere();
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406 return NULL;
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407 }
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408
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409 #undef RETURN_STUB
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410 }