Mercurial > hg > truffle
annotate src/cpu/sparc/vm/methodHandles_sparc.cpp @ 6475:67b94a9fba57
append global stub address when disassembling a call to a global stub
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Mon, 01 Oct 2012 22:10:47 +0200 |
parents | 957c266d8bc5 |
children | e522a00b91aa |
rev | line source |
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710 | 1 /* |
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2 * Copyright (c) 2008, 2012, Oracle and/or its affiliates. All rights reserved. |
710 | 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 * | |
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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. |
710 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "interpreter/interpreter.hpp" | |
27 #include "memory/allocation.inline.hpp" | |
28 #include "prims/methodHandles.hpp" | |
710 | 29 |
30 #define __ _masm-> | |
31 | |
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32 #ifdef PRODUCT |
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33 #define BLOCK_COMMENT(str) /* nothing */ |
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34 #define STOP(error) stop(error) |
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35 #else |
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36 #define BLOCK_COMMENT(str) __ block_comment(str) |
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37 #define STOP(error) block_comment(error); __ stop(error) |
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38 #endif |
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39 |
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40 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") |
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41 |
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42 // Workaround for C++ overloading nastiness on '0' for RegisterOrConstant. |
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43 static RegisterOrConstant constant(int value) { |
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44 return RegisterOrConstant(value); |
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45 } |
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46 |
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47 void MethodHandles::load_klass_from_Class(MacroAssembler* _masm, Register klass_reg, Register temp_reg, Register temp2_reg) { |
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48 if (VerifyMethodHandles) |
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49 verify_klass(_masm, klass_reg, SystemDictionaryHandles::Class_klass(), temp_reg, temp2_reg, |
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50 "MH argument is a Class"); |
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51 __ load_heap_oop(Address(klass_reg, java_lang_Class::klass_offset_in_bytes()), klass_reg); |
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52 } |
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53 |
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54 #ifdef ASSERT |
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55 static int check_nonzero(const char* xname, int x) { |
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56 assert(x != 0, err_msg("%s should be nonzero", xname)); |
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57 return x; |
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58 } |
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59 #define NONZERO(x) check_nonzero(#x, x) |
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60 #else //ASSERT |
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61 #define NONZERO(x) (x) |
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62 #endif //ASSERT |
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63 |
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64 #ifdef ASSERT |
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65 void MethodHandles::verify_klass(MacroAssembler* _masm, |
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66 Register obj_reg, KlassHandle klass, |
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67 Register temp_reg, Register temp2_reg, |
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68 const char* error_message) { |
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69 oop* klass_addr = klass.raw_value(); |
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70 assert(klass_addr >= SystemDictionaryHandles::Object_klass().raw_value() && |
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71 klass_addr <= SystemDictionaryHandles::Long_klass().raw_value(), |
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72 "must be one of the SystemDictionaryHandles"); |
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73 bool did_save = false; |
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74 if (temp_reg == noreg || temp2_reg == noreg) { |
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75 temp_reg = L1; |
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76 temp2_reg = L2; |
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77 __ save_frame_and_mov(0, obj_reg, L0); |
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78 obj_reg = L0; |
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79 did_save = true; |
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80 } |
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81 Label L_ok, L_bad; |
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82 BLOCK_COMMENT("verify_klass {"); |
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83 __ verify_oop(obj_reg); |
3839 | 84 __ br_null_short(obj_reg, Assembler::pn, L_bad); |
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85 __ load_klass(obj_reg, temp_reg); |
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86 __ set(ExternalAddress(klass_addr), temp2_reg); |
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87 __ ld_ptr(Address(temp2_reg, 0), temp2_reg); |
3839 | 88 __ cmp_and_brx_short(temp_reg, temp2_reg, Assembler::equal, Assembler::pt, L_ok); |
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89 intptr_t super_check_offset = klass->super_check_offset(); |
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90 __ ld_ptr(Address(temp_reg, super_check_offset), temp_reg); |
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91 __ set(ExternalAddress(klass_addr), temp2_reg); |
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92 __ ld_ptr(Address(temp2_reg, 0), temp2_reg); |
3839 | 93 __ cmp_and_brx_short(temp_reg, temp2_reg, Assembler::equal, Assembler::pt, L_ok); |
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94 __ BIND(L_bad); |
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95 if (did_save) __ restore(); |
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96 __ STOP(error_message); |
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97 __ BIND(L_ok); |
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98 if (did_save) __ restore(); |
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99 BLOCK_COMMENT("} verify_klass"); |
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100 } |
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101 |
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102 void MethodHandles::verify_ref_kind(MacroAssembler* _masm, int ref_kind, Register member_reg, Register temp) { |
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103 Label L; |
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104 BLOCK_COMMENT("verify_ref_kind {"); |
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105 __ lduw(Address(member_reg, NONZERO(java_lang_invoke_MemberName::flags_offset_in_bytes())), temp); |
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106 __ srl( temp, java_lang_invoke_MemberName::MN_REFERENCE_KIND_SHIFT, temp); |
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107 __ and3(temp, java_lang_invoke_MemberName::MN_REFERENCE_KIND_MASK, temp); |
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108 __ cmp_and_br_short(temp, ref_kind, Assembler::equal, Assembler::pt, L); |
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109 { char* buf = NEW_C_HEAP_ARRAY(char, 100, mtInternal); |
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110 jio_snprintf(buf, 100, "verify_ref_kind expected %x", ref_kind); |
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111 if (ref_kind == JVM_REF_invokeVirtual || |
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112 ref_kind == JVM_REF_invokeSpecial) |
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113 // could do this for all ref_kinds, but would explode assembly code size |
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114 trace_method_handle(_masm, buf); |
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115 __ STOP(buf); |
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116 } |
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117 BLOCK_COMMENT("} verify_ref_kind"); |
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118 __ bind(L); |
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119 } |
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120 |
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121 #endif // ASSERT |
710 | 122 |
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123 void MethodHandles::jump_from_method_handle(MacroAssembler* _masm, Register method, Register target, Register temp, |
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124 bool for_compiler_entry) { |
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125 assert(method == G5_method, "interpreter calling convention"); |
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126 __ verify_oop(method); |
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127 |
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128 if (!for_compiler_entry && JvmtiExport::can_post_interpreter_events()) { |
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129 Label run_compiled_code; |
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130 // JVMTI events, such as single-stepping, are implemented partly by avoiding running |
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131 // compiled code in threads for which the event is enabled. Check here for |
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132 // interp_only_mode if these events CAN be enabled. |
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133 __ verify_thread(); |
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134 const Address interp_only(G2_thread, JavaThread::interp_only_mode_offset()); |
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135 __ ld(interp_only, temp); |
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136 __ cmp_and_br_short(temp, 0, Assembler::zero, Assembler::pt, run_compiled_code); |
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137 __ ld_ptr(G5_method, in_bytes(methodOopDesc::interpreter_entry_offset()), target); |
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138 __ jmp(target, 0); |
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139 __ delayed()->nop(); |
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140 __ BIND(run_compiled_code); |
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141 // Note: we could fill some delay slots here, but |
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142 // it doesn't matter, since this is interpreter code. |
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143 } |
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144 |
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145 const ByteSize entry_offset = for_compiler_entry ? methodOopDesc::from_compiled_offset() : |
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146 methodOopDesc::from_interpreted_offset(); |
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147 __ ld_ptr(G5_method, in_bytes(entry_offset), target); |
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148 __ jmp(target, 0); |
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149 __ delayed()->nop(); |
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150 } |
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151 |
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152 void MethodHandles::jump_to_lambda_form(MacroAssembler* _masm, |
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153 Register recv, Register method_temp, |
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154 Register temp2, Register temp3, |
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155 bool for_compiler_entry) { |
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156 BLOCK_COMMENT("jump_to_lambda_form {"); |
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157 // This is the initial entry point of a lazy method handle. |
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158 // After type checking, it picks up the invoker from the LambdaForm. |
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159 assert_different_registers(recv, method_temp, temp2, temp3); |
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160 assert(method_temp == G5_method, "required register for loading method"); |
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161 |
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162 //NOT_PRODUCT({ FlagSetting fs(TraceMethodHandles, true); trace_method_handle(_masm, "LZMH"); }); |
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163 |
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164 // Load the invoker, as MH -> MH.form -> LF.vmentry |
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165 __ verify_oop(recv); |
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166 __ load_heap_oop(Address(recv, NONZERO(java_lang_invoke_MethodHandle::form_offset_in_bytes())), method_temp); |
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167 __ verify_oop(method_temp); |
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168 __ load_heap_oop(Address(method_temp, NONZERO(java_lang_invoke_LambdaForm::vmentry_offset_in_bytes())), method_temp); |
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169 __ verify_oop(method_temp); |
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170 // the following assumes that a methodOop is normally compressed in the vmtarget field: |
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171 __ load_heap_oop(Address(method_temp, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes())), method_temp); |
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172 __ verify_oop(method_temp); |
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173 |
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174 if (VerifyMethodHandles && !for_compiler_entry) { |
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175 // make sure recv is already on stack |
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176 __ load_sized_value(Address(method_temp, methodOopDesc::size_of_parameters_offset()), |
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177 temp2, |
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178 sizeof(u2), /*is_signed*/ false); |
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179 // assert(sizeof(u2) == sizeof(methodOopDesc::_size_of_parameters), ""); |
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180 Label L; |
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181 __ ld_ptr(__ argument_address(temp2, temp2, -1), temp2); |
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182 __ cmp_and_br_short(temp2, recv, Assembler::equal, Assembler::pt, L); |
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183 __ STOP("receiver not on stack"); |
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184 __ BIND(L); |
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185 } |
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186 |
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187 jump_from_method_handle(_masm, method_temp, temp2, temp3, for_compiler_entry); |
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188 BLOCK_COMMENT("} jump_to_lambda_form"); |
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189 } |
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190 |
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191 |
710 | 192 // Code generation |
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193 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm, |
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194 vmIntrinsics::ID iid) { |
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195 const bool not_for_compiler_entry = false; // this is the interpreter entry |
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196 assert(is_signature_polymorphic(iid), "expected invoke iid"); |
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197 if (iid == vmIntrinsics::_invokeGeneric || |
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198 iid == vmIntrinsics::_compiledLambdaForm) { |
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199 // Perhaps surprisingly, the symbolic references visible to Java are not directly used. |
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200 // They are linked to Java-generated adapters via MethodHandleNatives.linkMethod. |
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201 // They all allow an appendix argument. |
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202 __ should_not_reach_here(); // empty stubs make SG sick |
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203 return NULL; |
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204 } |
1503 | 205 |
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206 // I5_savedSP/O5_savedSP: sender SP (must preserve; see prepare_to_jump_from_interpreted) |
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207 // G5_method: methodOop |
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208 // G4 (Gargs): incoming argument list (must preserve) |
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209 // O0: used as temp to hold mh or receiver |
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210 // O1, O4: garbage temps, blown away |
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211 Register O1_scratch = O1; |
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212 Register O4_param_size = O4; // size of parameters |
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213 |
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214 address code_start = __ pc(); |
1503 | 215 |
216 // here's where control starts out: | |
217 __ align(CodeEntryAlignment); | |
218 address entry_point = __ pc(); | |
219 | |
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220 if (VerifyMethodHandles) { |
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221 Label L; |
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222 BLOCK_COMMENT("verify_intrinsic_id {"); |
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223 __ ldub(Address(G5_method, methodOopDesc::intrinsic_id_offset_in_bytes()), O1_scratch); |
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224 __ cmp_and_br_short(O1_scratch, (int) iid, Assembler::equal, Assembler::pt, L); |
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225 if (iid == vmIntrinsics::_linkToVirtual || |
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226 iid == vmIntrinsics::_linkToSpecial) { |
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227 // could do this for all kinds, but would explode assembly code size |
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228 trace_method_handle(_masm, "bad methodOop::intrinsic_id"); |
1503 | 229 } |
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230 __ STOP("bad methodOop::intrinsic_id"); |
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231 __ bind(L); |
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232 BLOCK_COMMENT("} verify_intrinsic_id"); |
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233 } |
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234 |
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235 // First task: Find out how big the argument list is. |
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236 Address O4_first_arg_addr; |
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237 int ref_kind = signature_polymorphic_intrinsic_ref_kind(iid); |
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238 assert(ref_kind != 0 || iid == vmIntrinsics::_invokeBasic, "must be _invokeBasic or a linkTo intrinsic"); |
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239 if (ref_kind == 0 || MethodHandles::ref_kind_has_receiver(ref_kind)) { |
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240 __ load_sized_value(Address(G5_method, methodOopDesc::size_of_parameters_offset()), |
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241 O4_param_size, |
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242 sizeof(u2), /*is_signed*/ false); |
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243 // assert(sizeof(u2) == sizeof(methodOopDesc::_size_of_parameters), ""); |
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244 O4_first_arg_addr = __ argument_address(O4_param_size, O4_param_size, -1); |
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245 } else { |
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246 DEBUG_ONLY(O4_param_size = noreg); |
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247 } |
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248 |
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249 Register O0_mh = noreg; |
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250 if (!is_signature_polymorphic_static(iid)) { |
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251 __ ld_ptr(O4_first_arg_addr, O0_mh = O0); |
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252 DEBUG_ONLY(O4_param_size = noreg); |
1503 | 253 } |
254 | |
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255 // O4_first_arg_addr is live! |
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256 |
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257 if (TraceMethodHandles) { |
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258 const char* name = vmIntrinsics::name_at(iid); |
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259 if (*name == '_') name += 1; |
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260 const size_t len = strlen(name) + 50; |
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261 char* qname = NEW_C_HEAP_ARRAY(char, len, mtInternal); |
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262 const char* suffix = ""; |
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263 if (vmIntrinsics::method_for(iid) == NULL || |
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264 !vmIntrinsics::method_for(iid)->access_flags().is_public()) { |
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265 if (is_signature_polymorphic_static(iid)) |
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266 suffix = "/static"; |
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267 else |
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268 suffix = "/private"; |
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269 } |
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270 jio_snprintf(qname, len, "MethodHandle::interpreter_entry::%s%s", name, suffix); |
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271 if (O0_mh != noreg) |
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272 __ mov(O0_mh, G3_method_handle); // make stub happy |
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273 trace_method_handle(_masm, qname); |
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274 } |
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275 |
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276 if (iid == vmIntrinsics::_invokeBasic) { |
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277 generate_method_handle_dispatch(_masm, iid, O0_mh, noreg, not_for_compiler_entry); |
1503 | 278 |
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279 } else { |
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280 // Adjust argument list by popping the trailing MemberName argument. |
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281 Register O0_recv = noreg; |
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282 if (MethodHandles::ref_kind_has_receiver(ref_kind)) { |
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283 // Load the receiver (not the MH; the actual MemberName's receiver) up from the interpreter stack. |
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284 __ ld_ptr(O4_first_arg_addr, O0_recv = O0); |
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285 DEBUG_ONLY(O4_param_size = noreg); |
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286 } |
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287 Register G5_member = G5_method; // MemberName ptr; incoming method ptr is dead now |
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288 __ ld_ptr(__ argument_address(constant(0)), G5_member); |
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289 __ add(Gargs, Interpreter::stackElementSize, Gargs); |
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290 generate_method_handle_dispatch(_masm, iid, O0_recv, G5_member, not_for_compiler_entry); |
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291 } |
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292 |
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293 if (PrintMethodHandleStubs) { |
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294 address code_end = __ pc(); |
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295 tty->print_cr("--------"); |
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296 tty->print_cr("method handle interpreter entry for %s", vmIntrinsics::name_at(iid)); |
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297 Disassembler::decode(code_start, code_end); |
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298 tty->cr(); |
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299 } |
1503 | 300 |
301 return entry_point; | |
710 | 302 } |
303 | |
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304 void MethodHandles::generate_method_handle_dispatch(MacroAssembler* _masm, |
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305 vmIntrinsics::ID iid, |
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306 Register receiver_reg, |
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307 Register member_reg, |
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308 bool for_compiler_entry) { |
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309 assert(is_signature_polymorphic(iid), "expected invoke iid"); |
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310 // temps used in this code are not used in *either* compiled or interpreted calling sequences |
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311 Register temp1 = (for_compiler_entry ? G1_scratch : O1); |
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312 Register temp2 = (for_compiler_entry ? G4_scratch : O4); |
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313 Register temp3 = G3_scratch; |
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314 Register temp4 = (for_compiler_entry ? noreg : O2); |
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315 if (for_compiler_entry) { |
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316 assert(receiver_reg == (iid == vmIntrinsics::_linkToStatic ? noreg : O0), "only valid assignment"); |
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317 assert_different_registers(temp1, O0, O1, O2, O3, O4, O5); |
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318 assert_different_registers(temp2, O0, O1, O2, O3, O4, O5); |
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319 assert_different_registers(temp3, O0, O1, O2, O3, O4, O5); |
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320 assert_different_registers(temp4, O0, O1, O2, O3, O4, O5); |
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321 } |
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322 if (receiver_reg != noreg) assert_different_registers(temp1, temp2, temp3, temp4, receiver_reg); |
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323 if (member_reg != noreg) assert_different_registers(temp1, temp2, temp3, temp4, member_reg); |
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324 if (!for_compiler_entry) assert_different_registers(temp1, temp2, temp3, temp4, O5_savedSP); // don't trash lastSP |
1503 | 325 |
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326 if (iid == vmIntrinsics::_invokeBasic) { |
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327 // indirect through MH.form.vmentry.vmtarget |
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328 jump_to_lambda_form(_masm, receiver_reg, G5_method, temp2, temp3, for_compiler_entry); |
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329 |
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330 } else { |
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331 // The method is a member invoker used by direct method handles. |
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332 if (VerifyMethodHandles) { |
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333 // make sure the trailing argument really is a MemberName (caller responsibility) |
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334 verify_klass(_masm, member_reg, SystemDictionaryHandles::MemberName_klass(), |
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335 temp1, temp2, |
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336 "MemberName required for invokeVirtual etc."); |
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337 } |
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338 |
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339 Address member_clazz( member_reg, NONZERO(java_lang_invoke_MemberName::clazz_offset_in_bytes())); |
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340 Address member_vmindex( member_reg, NONZERO(java_lang_invoke_MemberName::vmindex_offset_in_bytes())); |
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341 Address member_vmtarget( member_reg, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes())); |
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342 |
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343 Register temp1_recv_klass = temp1; |
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344 if (iid != vmIntrinsics::_linkToStatic) { |
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345 __ verify_oop(receiver_reg); |
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346 if (iid == vmIntrinsics::_linkToSpecial) { |
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347 // Don't actually load the klass; just null-check the receiver. |
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348 __ null_check(receiver_reg); |
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349 } else { |
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350 // load receiver klass itself |
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351 __ null_check(receiver_reg, oopDesc::klass_offset_in_bytes()); |
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352 __ load_klass(receiver_reg, temp1_recv_klass); |
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353 __ verify_oop(temp1_recv_klass); |
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354 } |
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355 BLOCK_COMMENT("check_receiver {"); |
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356 // The receiver for the MemberName must be in receiver_reg. |
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357 // Check the receiver against the MemberName.clazz |
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358 if (VerifyMethodHandles && iid == vmIntrinsics::_linkToSpecial) { |
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359 // Did not load it above... |
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360 __ load_klass(receiver_reg, temp1_recv_klass); |
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361 __ verify_oop(temp1_recv_klass); |
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362 } |
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363 if (VerifyMethodHandles && iid != vmIntrinsics::_linkToInterface) { |
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364 Label L_ok; |
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365 Register temp2_defc = temp2; |
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366 __ load_heap_oop(member_clazz, temp2_defc); |
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367 load_klass_from_Class(_masm, temp2_defc, temp3, temp4); |
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368 __ verify_oop(temp2_defc); |
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369 __ check_klass_subtype(temp1_recv_klass, temp2_defc, temp3, temp4, L_ok); |
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370 // If we get here, the type check failed! |
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371 __ STOP("receiver class disagrees with MemberName.clazz"); |
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372 __ bind(L_ok); |
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373 } |
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374 BLOCK_COMMENT("} check_receiver"); |
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375 } |
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376 if (iid == vmIntrinsics::_linkToSpecial || |
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377 iid == vmIntrinsics::_linkToStatic) { |
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378 DEBUG_ONLY(temp1_recv_klass = noreg); // these guys didn't load the recv_klass |
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379 } |
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380 |
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381 // Live registers at this point: |
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382 // member_reg - MemberName that was the trailing argument |
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383 // temp1_recv_klass - klass of stacked receiver, if needed |
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384 // O5_savedSP - interpreter linkage (if interpreted) |
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385 // O0..O7,G1,G4 - compiler arguments (if compiled) |
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386 |
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387 bool method_is_live = false; |
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388 switch (iid) { |
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389 case vmIntrinsics::_linkToSpecial: |
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390 if (VerifyMethodHandles) { |
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391 verify_ref_kind(_masm, JVM_REF_invokeSpecial, member_reg, temp3); |
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392 } |
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393 __ load_heap_oop(member_vmtarget, G5_method); |
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394 method_is_live = true; |
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395 break; |
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396 |
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397 case vmIntrinsics::_linkToStatic: |
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398 if (VerifyMethodHandles) { |
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399 verify_ref_kind(_masm, JVM_REF_invokeStatic, member_reg, temp3); |
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400 } |
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401 __ load_heap_oop(member_vmtarget, G5_method); |
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402 method_is_live = true; |
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403 break; |
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404 |
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405 case vmIntrinsics::_linkToVirtual: |
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406 { |
6266
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407 // same as TemplateTable::invokevirtual, |
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408 // minus the CP setup and profiling: |
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409 |
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410 if (VerifyMethodHandles) { |
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411 verify_ref_kind(_masm, JVM_REF_invokeVirtual, member_reg, temp3); |
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412 } |
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413 |
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414 // pick out the vtable index from the MemberName, and then we can discard it: |
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415 Register temp2_index = temp2; |
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416 __ ld_ptr(member_vmindex, temp2_index); |
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417 |
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418 if (VerifyMethodHandles) { |
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419 Label L_index_ok; |
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420 __ cmp_and_br_short(temp2_index, (int) 0, Assembler::greaterEqual, Assembler::pn, L_index_ok); |
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421 __ STOP("no virtual index"); |
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422 __ BIND(L_index_ok); |
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423 } |
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424 |
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425 // Note: The verifier invariants allow us to ignore MemberName.clazz and vmtarget |
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426 // at this point. And VerifyMethodHandles has already checked clazz, if needed. |
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427 |
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428 // get target methodOop & entry point |
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429 __ lookup_virtual_method(temp1_recv_klass, temp2_index, G5_method); |
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430 method_is_live = true; |
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431 break; |
3442
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|
432 } |
6266
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433 |
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434 case vmIntrinsics::_linkToInterface: |
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435 { |
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436 // same as TemplateTable::invokeinterface |
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437 // (minus the CP setup and profiling, with different argument motion) |
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438 if (VerifyMethodHandles) { |
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439 verify_ref_kind(_masm, JVM_REF_invokeInterface, member_reg, temp3); |
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440 } |
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441 |
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442 Register temp3_intf = temp3; |
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443 __ load_heap_oop(member_clazz, temp3_intf); |
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444 load_klass_from_Class(_masm, temp3_intf, temp2, temp4); |
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445 __ verify_oop(temp3_intf); |
1503 | 446 |
6266
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447 Register G5_index = G5_method; |
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448 __ ld_ptr(member_vmindex, G5_index); |
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449 if (VerifyMethodHandles) { |
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450 Label L; |
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451 __ cmp_and_br_short(G5_index, 0, Assembler::greaterEqual, Assembler::pt, L); |
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452 __ STOP("invalid vtable index for MH.invokeInterface"); |
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453 __ bind(L); |
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|
454 } |
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changeset
|
455 |
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456 // given intf, index, and recv klass, dispatch to the implementation method |
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457 Label L_no_such_interface; |
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458 Register no_sethi_temp = noreg; |
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459 __ lookup_interface_method(temp1_recv_klass, temp3_intf, |
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460 // note: next two args must be the same: |
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|
461 G5_index, G5_method, |
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462 temp2, no_sethi_temp, |
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463 L_no_such_interface); |
1d7922586cf6
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|
464 |
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465 __ verify_oop(G5_method); |
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466 jump_from_method_handle(_masm, G5_method, temp2, temp3, for_compiler_entry); |
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|
467 |
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468 __ bind(L_no_such_interface); |
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|
469 AddressLiteral icce(StubRoutines::throw_IncompatibleClassChangeError_entry()); |
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470 __ jump_to(icce, temp3); |
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|
471 __ delayed()->nop(); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
472 break; |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
473 } |
1d7922586cf6
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changeset
|
474 |
1d7922586cf6
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|
475 default: |
1d7922586cf6
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|
476 fatal(err_msg("unexpected intrinsic %d: %s", iid, vmIntrinsics::name_at(iid))); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
477 break; |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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changeset
|
478 } |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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parents:
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diff
changeset
|
479 |
1d7922586cf6
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|
480 if (method_is_live) { |
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|
481 // live at this point: G5_method, O5_savedSP (if interpreted) |
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|
482 |
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|
483 // After figuring out which concrete method to call, jump into it. |
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|
484 // Note that this works in the interpreter with no data motion. |
1d7922586cf6
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|
485 // But the compiled version will require that rcx_recv be shifted out. |
1d7922586cf6
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|
486 __ verify_oop(G5_method); |
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|
487 jump_from_method_handle(_masm, G5_method, temp1, temp3, for_compiler_entry); |
1d7922586cf6
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|
488 } |
3442
f7d55ea6ee56
7045514: SPARC assembly code for JSR 292 ricochet frames
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parents:
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diff
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|
489 } |
f7d55ea6ee56
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parents:
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diff
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|
490 } |
1503 | 491 |
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changeset
|
492 #ifndef PRODUCT |
1503 | 493 void trace_method_handle_stub(const char* adaptername, |
3336
2e038ad0c1d0
7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
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parents:
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diff
changeset
|
494 oopDesc* mh, |
4824
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|
495 intptr_t* saved_sp, |
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|
496 intptr_t* args, |
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|
497 intptr_t* tracing_fp) { |
6266
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|
498 bool has_mh = (strstr(adaptername, "/static") == NULL && |
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|
499 strstr(adaptername, "linkTo") == NULL); // static linkers don't have MH |
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|
500 const char* mh_reg_name = has_mh ? "G3_mh" : "G3"; |
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|
501 tty->print_cr("MH %s %s="INTPTR_FORMAT " saved_sp=" INTPTR_FORMAT " args=" INTPTR_FORMAT, |
1d7922586cf6
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|
502 adaptername, mh_reg_name, |
1d7922586cf6
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|
503 (intptr_t) mh, saved_sp, args); |
4824
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7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
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|
504 |
5dbed2f542ff
7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
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|
505 if (Verbose) { |
5dbed2f542ff
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|
506 // dumping last frame with frame::describe |
5dbed2f542ff
7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
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|
507 |
5dbed2f542ff
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|
508 JavaThread* p = JavaThread::active(); |
5dbed2f542ff
7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
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diff
changeset
|
509 |
5dbed2f542ff
7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
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diff
changeset
|
510 ResourceMark rm; |
5dbed2f542ff
7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
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|
511 PRESERVE_EXCEPTION_MARK; // may not be needed by safer and unexpensive here |
5dbed2f542ff
7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
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|
512 FrameValues values; |
5dbed2f542ff
7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
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diff
changeset
|
513 |
5dbed2f542ff
7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
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|
514 // Note: We want to allow trace_method_handle from any call site. |
5dbed2f542ff
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|
515 // While trace_method_handle creates a frame, it may be entered |
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|
516 // without a valid return PC in O7 (e.g. not just after a call). |
5dbed2f542ff
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517 // Walking that frame could lead to failures due to that invalid PC. |
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|
518 // => carefully detect that frame when doing the stack walking |
5dbed2f542ff
7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
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diff
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|
519 |
5dbed2f542ff
7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
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diff
changeset
|
520 // walk up to the right frame using the "tracing_fp" argument |
5dbed2f542ff
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changeset
|
521 intptr_t* cur_sp = StubRoutines::Sparc::flush_callers_register_windows_func()(); |
5dbed2f542ff
7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
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|
522 frame cur_frame(cur_sp, frame::unpatchable, NULL); |
5dbed2f542ff
7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
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diff
changeset
|
523 |
5dbed2f542ff
7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents:
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diff
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524 while (cur_frame.fp() != (intptr_t *)(STACK_BIAS+(uintptr_t)tracing_fp)) { |
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525 cur_frame = os::get_sender_for_C_frame(&cur_frame); |
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526 } |
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527 |
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528 // safely create a frame and call frame::describe |
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529 intptr_t *dump_sp = cur_frame.sender_sp(); |
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530 intptr_t *dump_fp = cur_frame.link(); |
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531 |
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532 bool walkable = has_mh; // whether the traced frame shoud be walkable |
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533 |
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534 // the sender for cur_frame is the caller of trace_method_handle |
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535 if (walkable) { |
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536 // The previous definition of walkable may have to be refined |
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537 // if new call sites cause the next frame constructor to start |
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538 // failing. Alternatively, frame constructors could be |
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539 // modified to support the current or future non walkable |
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540 // frames (but this is more intrusive and is not considered as |
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541 // part of this RFE, which will instead use a simpler output). |
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542 frame dump_frame = frame(dump_sp, |
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543 cur_frame.sp(), // younger_sp |
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544 false); // no adaptation |
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545 dump_frame.describe(values, 1); |
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546 } else { |
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547 // Robust dump for frames which cannot be constructed from sp/younger_sp |
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548 // Add descriptions without building a Java frame to avoid issues |
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549 values.describe(-1, dump_fp, "fp for #1 <not parsed, cannot trust pc>"); |
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550 values.describe(-1, dump_sp, "sp"); |
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551 } |
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552 |
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553 bool has_args = has_mh; // whether Gargs is meaningful |
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554 |
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555 // mark args, if seems valid (may not be valid for some adapters) |
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556 if (has_args) { |
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557 if ((args >= dump_sp) && (args < dump_fp)) { |
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558 values.describe(-1, args, "*G4_args"); |
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559 } |
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560 } |
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561 |
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562 // mark saved_sp, if seems valid (may not be valid for some adapters) |
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563 intptr_t *unbiased_sp = (intptr_t *)(STACK_BIAS+(uintptr_t)saved_sp); |
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564 const int ARG_LIMIT = 255, SLOP = 45, UNREASONABLE_STACK_MOVE = (ARG_LIMIT + SLOP); |
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565 if ((unbiased_sp >= dump_sp - UNREASONABLE_STACK_MOVE) && (unbiased_sp < dump_fp)) { |
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566 values.describe(-1, unbiased_sp, "*saved_sp+STACK_BIAS"); |
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567 } |
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568 |
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569 // Note: the unextended_sp may not be correct |
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570 tty->print_cr(" stack layout:"); |
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571 values.print(p); |
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572 if (has_mh && mh->is_oop()) { |
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573 mh->print(); |
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574 if (java_lang_invoke_MethodHandle::is_instance(mh)) { |
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575 if (java_lang_invoke_MethodHandle::form_offset_in_bytes() != 0) |
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576 java_lang_invoke_MethodHandle::form(mh)->print(); |
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577 } |
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578 } |
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579 } |
1503 | 580 } |
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581 |
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582 void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) { |
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583 if (!TraceMethodHandles) return; |
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584 BLOCK_COMMENT("trace_method_handle {"); |
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585 // save: Gargs, O5_savedSP |
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586 __ save_frame(16); // need space for saving required FPU state |
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587 |
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588 __ set((intptr_t) adaptername, O0); |
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589 __ mov(G3_method_handle, O1); |
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590 __ mov(I5_savedSP, O2); |
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591 __ mov(Gargs, O3); |
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592 __ mov(I6, O4); // frame identifier for safe stack walking |
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593 |
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594 // Save scratched registers that might be needed. Robustness is more |
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595 // important than optimizing the saves for this debug only code. |
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596 |
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597 // save FP result, valid at some call sites (adapter_opt_return_float, ...) |
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598 Address d_save(FP, -sizeof(jdouble) + STACK_BIAS); |
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599 __ stf(FloatRegisterImpl::D, Ftos_d, d_save); |
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600 // Safely save all globals but G2 (handled by call_VM_leaf) and G7 |
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601 // (OS reserved). |
1849
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602 __ mov(G3_method_handle, L3); |
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603 __ mov(Gargs, L4); |
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604 __ mov(G5_method_type, L5); |
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605 __ mov(G6, L6); |
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606 __ mov(G1, L1); |
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607 |
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608 __ call_VM_leaf(L2 /* for G2 */, CAST_FROM_FN_PTR(address, trace_method_handle_stub)); |
1849
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609 |
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610 __ mov(L3, G3_method_handle); |
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611 __ mov(L4, Gargs); |
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612 __ mov(L5, G5_method_type); |
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613 __ mov(L6, G6); |
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614 __ mov(L1, G1); |
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615 __ ldf(FloatRegisterImpl::D, d_save, Ftos_d); |
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616 |
1849
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617 __ restore(); |
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618 BLOCK_COMMENT("} trace_method_handle"); |
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619 } |
1503 | 620 #endif // PRODUCT |