Mercurial > hg > truffle
annotate src/cpu/x86/vm/methodHandles_x86.cpp @ 3978:f0ecbe78fc7b
7092238: G1: Uninitialized field gc_efficiency in G1PrintRegionLivenessInfo output
Reviewed-by: jcoomes, johnc
author | tonyp |
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date | Thu, 22 Sep 2011 07:18:51 -0400 |
parents | c565834fb592 |
children | 0abefdb54d21 |
rev | line source |
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710 | 1 /* |
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2 * Copyright (c) 1997, 2011, 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" | |
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27 #include "interpreter/interpreterRuntime.hpp" |
1972 | 28 #include "memory/allocation.inline.hpp" |
29 #include "prims/methodHandles.hpp" | |
710 | 30 |
31 #define __ _masm-> | |
32 | |
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33 #ifdef PRODUCT |
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34 #define BLOCK_COMMENT(str) /* nothing */ |
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35 #else |
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36 #define BLOCK_COMMENT(str) __ block_comment(str) |
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37 #endif |
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38 |
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39 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") |
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40 |
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41 // Workaround for C++ overloading nastiness on '0' for RegisterOrConstant. |
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42 static RegisterOrConstant constant(int value) { |
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43 return RegisterOrConstant(value); |
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44 } |
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45 |
710 | 46 address MethodHandleEntry::start_compiled_entry(MacroAssembler* _masm, |
47 address interpreted_entry) { | |
48 // Just before the actual machine code entry point, allocate space | |
49 // for a MethodHandleEntry::Data record, so that we can manage everything | |
50 // from one base pointer. | |
51 __ align(wordSize); | |
52 address target = __ pc() + sizeof(Data); | |
53 while (__ pc() < target) { | |
54 __ nop(); | |
55 __ align(wordSize); | |
56 } | |
57 | |
58 MethodHandleEntry* me = (MethodHandleEntry*) __ pc(); | |
59 me->set_end_address(__ pc()); // set a temporary end_address | |
60 me->set_from_interpreted_entry(interpreted_entry); | |
61 me->set_type_checking_entry(NULL); | |
62 | |
63 return (address) me; | |
64 } | |
65 | |
66 MethodHandleEntry* MethodHandleEntry::finish_compiled_entry(MacroAssembler* _masm, | |
67 address start_addr) { | |
68 MethodHandleEntry* me = (MethodHandleEntry*) start_addr; | |
69 assert(me->end_address() == start_addr, "valid ME"); | |
70 | |
71 // Fill in the real end_address: | |
72 __ align(wordSize); | |
73 me->set_end_address(__ pc()); | |
74 | |
75 return me; | |
76 } | |
77 | |
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78 // stack walking support |
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79 |
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80 frame MethodHandles::ricochet_frame_sender(const frame& fr, RegisterMap *map) { |
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81 RicochetFrame* f = RicochetFrame::from_frame(fr); |
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82 if (map->update_map()) |
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83 frame::update_map_with_saved_link(map, &f->_sender_link); |
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84 return frame(f->extended_sender_sp(), f->exact_sender_sp(), f->sender_link(), f->sender_pc()); |
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85 } |
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86 |
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87 void MethodHandles::ricochet_frame_oops_do(const frame& fr, OopClosure* blk, const RegisterMap* reg_map) { |
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88 RicochetFrame* f = RicochetFrame::from_frame(fr); |
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89 |
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90 // pick up the argument type descriptor: |
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91 Thread* thread = Thread::current(); |
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92 Handle cookie(thread, f->compute_saved_args_layout(true, true)); |
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93 |
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94 // process fixed part |
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95 blk->do_oop((oop*)f->saved_target_addr()); |
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96 blk->do_oop((oop*)f->saved_args_layout_addr()); |
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97 |
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98 // process variable arguments: |
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99 if (cookie.is_null()) return; // no arguments to describe |
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100 |
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101 // the cookie is actually the invokeExact method for my target |
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102 // his argument signature is what I'm interested in |
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103 assert(cookie->is_method(), ""); |
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104 methodHandle invoker(thread, methodOop(cookie())); |
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105 assert(invoker->name() == vmSymbols::invokeExact_name(), "must be this kind of method"); |
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106 assert(!invoker->is_static(), "must have MH argument"); |
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107 int slot_count = invoker->size_of_parameters(); |
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108 assert(slot_count >= 1, "must include 'this'"); |
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109 intptr_t* base = f->saved_args_base(); |
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110 intptr_t* retval = NULL; |
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111 if (f->has_return_value_slot()) |
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112 retval = f->return_value_slot_addr(); |
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113 int slot_num = slot_count; |
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114 intptr_t* loc = &base[slot_num -= 1]; |
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115 //blk->do_oop((oop*) loc); // original target, which is irrelevant |
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116 int arg_num = 0; |
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117 for (SignatureStream ss(invoker->signature()); !ss.is_done(); ss.next()) { |
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118 if (ss.at_return_type()) continue; |
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119 BasicType ptype = ss.type(); |
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120 if (ptype == T_ARRAY) ptype = T_OBJECT; // fold all refs to T_OBJECT |
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121 assert(ptype >= T_BOOLEAN && ptype <= T_OBJECT, "not array or void"); |
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122 loc = &base[slot_num -= type2size[ptype]]; |
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123 bool is_oop = (ptype == T_OBJECT && loc != retval); |
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124 if (is_oop) blk->do_oop((oop*)loc); |
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125 arg_num += 1; |
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126 } |
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127 assert(slot_num == 0, "must have processed all the arguments"); |
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128 } |
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129 |
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130 oop MethodHandles::RicochetFrame::compute_saved_args_layout(bool read_cache, bool write_cache) { |
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131 oop cookie = NULL; |
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132 if (read_cache) { |
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133 cookie = saved_args_layout(); |
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134 if (cookie != NULL) return cookie; |
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135 } |
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136 oop target = saved_target(); |
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137 oop mtype = java_lang_invoke_MethodHandle::type(target); |
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138 oop mtform = java_lang_invoke_MethodType::form(mtype); |
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139 cookie = java_lang_invoke_MethodTypeForm::vmlayout(mtform); |
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140 if (write_cache) { |
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141 (*saved_args_layout_addr()) = cookie; |
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142 } |
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143 return cookie; |
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144 } |
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145 |
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146 void MethodHandles::RicochetFrame::generate_ricochet_blob(MacroAssembler* _masm, |
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147 // output params: |
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148 int* bounce_offset, |
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149 int* exception_offset, |
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150 int* frame_size_in_words) { |
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151 (*frame_size_in_words) = RicochetFrame::frame_size_in_bytes() / wordSize; |
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152 |
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153 address start = __ pc(); |
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154 |
710 | 155 #ifdef ASSERT |
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156 __ hlt(); __ hlt(); __ hlt(); |
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157 // here's a hint of something special: |
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158 __ push(MAGIC_NUMBER_1); |
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159 __ push(MAGIC_NUMBER_2); |
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160 #endif //ASSERT |
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161 __ hlt(); // not reached |
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162 |
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163 // A return PC has just been popped from the stack. |
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164 // Return values are in registers. |
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165 // The ebp points into the RicochetFrame, which contains |
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166 // a cleanup continuation we must return to. |
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167 |
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168 (*bounce_offset) = __ pc() - start; |
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169 BLOCK_COMMENT("ricochet_blob.bounce"); |
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170 |
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171 if (VerifyMethodHandles) RicochetFrame::verify_clean(_masm); |
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172 trace_method_handle(_masm, "return/ricochet_blob.bounce"); |
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173 |
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174 __ jmp(frame_address(continuation_offset_in_bytes())); |
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175 __ hlt(); |
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176 DEBUG_ONLY(__ push(MAGIC_NUMBER_2)); |
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177 |
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178 (*exception_offset) = __ pc() - start; |
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179 BLOCK_COMMENT("ricochet_blob.exception"); |
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180 |
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181 // compare this to Interpreter::rethrow_exception_entry, which is parallel code |
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182 // for example, see TemplateInterpreterGenerator::generate_throw_exception |
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183 // Live registers in: |
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184 // rax: exception |
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185 // rdx: return address/pc that threw exception (ignored, always equal to bounce addr) |
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186 __ verify_oop(rax); |
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187 |
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188 // no need to empty_FPU_stack or reinit_heapbase, since caller frame will do the same if needed |
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189 |
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190 // Take down the frame. |
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191 |
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192 // Cf. InterpreterMacroAssembler::remove_activation. |
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193 leave_ricochet_frame(_masm, /*rcx_recv=*/ noreg, |
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194 saved_last_sp_register(), |
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195 /*sender_pc_reg=*/ rdx); |
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196 |
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197 // In between activations - previous activation type unknown yet |
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198 // compute continuation point - the continuation point expects the |
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199 // following registers set up: |
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200 // |
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201 // rax: exception |
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202 // rdx: return address/pc that threw exception |
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203 // rsp: expression stack of caller |
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204 // rbp: ebp of caller |
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205 __ push(rax); // save exception |
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206 __ push(rdx); // save return address |
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207 Register thread_reg = LP64_ONLY(r15_thread) NOT_LP64(rdi); |
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208 NOT_LP64(__ get_thread(thread_reg)); |
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209 __ call_VM_leaf(CAST_FROM_FN_PTR(address, |
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210 SharedRuntime::exception_handler_for_return_address), |
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211 thread_reg, rdx); |
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212 __ mov(rbx, rax); // save exception handler |
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213 __ pop(rdx); // restore return address |
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214 __ pop(rax); // restore exception |
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215 __ jmp(rbx); // jump to exception |
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216 // handler of caller |
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217 } |
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218 |
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219 void MethodHandles::RicochetFrame::enter_ricochet_frame(MacroAssembler* _masm, |
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220 Register rcx_recv, |
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221 Register rax_argv, |
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222 address return_handler, |
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223 Register rbx_temp) { |
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224 const Register saved_last_sp = saved_last_sp_register(); |
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225 Address rcx_mh_vmtarget( rcx_recv, java_lang_invoke_MethodHandle::vmtarget_offset_in_bytes() ); |
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226 Address rcx_amh_conversion( rcx_recv, java_lang_invoke_AdapterMethodHandle::conversion_offset_in_bytes() ); |
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227 |
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228 // Push the RicochetFrame a word at a time. |
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229 // This creates something similar to an interpreter frame. |
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230 // Cf. TemplateInterpreterGenerator::generate_fixed_frame. |
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231 BLOCK_COMMENT("push RicochetFrame {"); |
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232 DEBUG_ONLY(int rfo = (int) sizeof(RicochetFrame)); |
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233 assert((rfo -= wordSize) == RicochetFrame::sender_pc_offset_in_bytes(), ""); |
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234 #define RF_FIELD(push_value, name) \ |
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235 { push_value; \ |
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236 assert((rfo -= wordSize) == RicochetFrame::name##_offset_in_bytes(), ""); } |
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237 RF_FIELD(__ push(rbp), sender_link); |
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238 RF_FIELD(__ push(saved_last_sp), exact_sender_sp); // rsi/r13 |
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239 RF_FIELD(__ pushptr(rcx_amh_conversion), conversion); |
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240 RF_FIELD(__ push(rax_argv), saved_args_base); // can be updated if args are shifted |
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241 RF_FIELD(__ push((int32_t) NULL_WORD), saved_args_layout); // cache for GC layout cookie |
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242 if (UseCompressedOops) { |
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243 __ load_heap_oop(rbx_temp, rcx_mh_vmtarget); |
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244 RF_FIELD(__ push(rbx_temp), saved_target); |
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245 } else { |
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246 RF_FIELD(__ pushptr(rcx_mh_vmtarget), saved_target); |
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247 } |
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248 __ lea(rbx_temp, ExternalAddress(return_handler)); |
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249 RF_FIELD(__ push(rbx_temp), continuation); |
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250 #undef RF_FIELD |
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251 assert(rfo == 0, "fully initialized the RicochetFrame"); |
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252 // compute new frame pointer: |
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253 __ lea(rbp, Address(rsp, RicochetFrame::sender_link_offset_in_bytes())); |
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254 // Push guard word #1 in debug mode. |
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255 DEBUG_ONLY(__ push((int32_t) RicochetFrame::MAGIC_NUMBER_1)); |
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256 // For debugging, leave behind an indication of which stub built this frame. |
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257 DEBUG_ONLY({ Label L; __ call(L, relocInfo::none); __ bind(L); }); |
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258 BLOCK_COMMENT("} RicochetFrame"); |
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259 } |
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260 |
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261 void MethodHandles::RicochetFrame::leave_ricochet_frame(MacroAssembler* _masm, |
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262 Register rcx_recv, |
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263 Register new_sp_reg, |
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264 Register sender_pc_reg) { |
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265 assert_different_registers(rcx_recv, new_sp_reg, sender_pc_reg); |
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266 const Register saved_last_sp = saved_last_sp_register(); |
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267 // Take down the frame. |
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268 // Cf. InterpreterMacroAssembler::remove_activation. |
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269 BLOCK_COMMENT("end_ricochet_frame {"); |
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270 // TO DO: If (exact_sender_sp - extended_sender_sp) > THRESH, compact the frame down. |
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271 // This will keep stack in bounds even with unlimited tailcalls, each with an adapter. |
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272 if (rcx_recv->is_valid()) |
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273 __ movptr(rcx_recv, RicochetFrame::frame_address(RicochetFrame::saved_target_offset_in_bytes())); |
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274 __ movptr(sender_pc_reg, RicochetFrame::frame_address(RicochetFrame::sender_pc_offset_in_bytes())); |
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275 __ movptr(saved_last_sp, RicochetFrame::frame_address(RicochetFrame::exact_sender_sp_offset_in_bytes())); |
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276 __ movptr(rbp, RicochetFrame::frame_address(RicochetFrame::sender_link_offset_in_bytes())); |
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277 __ mov(rsp, new_sp_reg); |
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278 BLOCK_COMMENT("} end_ricochet_frame"); |
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279 } |
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280 |
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281 // Emit code to verify that RBP is pointing at a valid ricochet frame. |
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282 #ifdef ASSERT |
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283 enum { |
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284 ARG_LIMIT = 255, SLOP = 4, |
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285 // use this parameter for checking for garbage stack movements: |
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286 UNREASONABLE_STACK_MOVE = (ARG_LIMIT + SLOP) |
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287 // the slop defends against false alarms due to fencepost errors |
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288 }; |
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289 |
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290 void MethodHandles::RicochetFrame::verify_clean(MacroAssembler* _masm) { |
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291 // The stack should look like this: |
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292 // ... keep1 | dest=42 | keep2 | RF | magic | handler | magic | recursive args | |
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293 // Check various invariants. |
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294 verify_offsets(); |
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295 |
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296 Register rdi_temp = rdi; |
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297 Register rcx_temp = rcx; |
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298 { __ push(rdi_temp); __ push(rcx_temp); } |
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299 #define UNPUSH_TEMPS \ |
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300 { __ pop(rcx_temp); __ pop(rdi_temp); } |
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301 |
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302 Address magic_number_1_addr = RicochetFrame::frame_address(RicochetFrame::magic_number_1_offset_in_bytes()); |
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303 Address magic_number_2_addr = RicochetFrame::frame_address(RicochetFrame::magic_number_2_offset_in_bytes()); |
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304 Address continuation_addr = RicochetFrame::frame_address(RicochetFrame::continuation_offset_in_bytes()); |
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305 Address conversion_addr = RicochetFrame::frame_address(RicochetFrame::conversion_offset_in_bytes()); |
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306 Address saved_args_base_addr = RicochetFrame::frame_address(RicochetFrame::saved_args_base_offset_in_bytes()); |
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307 |
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308 Label L_bad, L_ok; |
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309 BLOCK_COMMENT("verify_clean {"); |
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310 // Magic numbers must check out: |
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311 __ cmpptr(magic_number_1_addr, (int32_t) MAGIC_NUMBER_1); |
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312 __ jcc(Assembler::notEqual, L_bad); |
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313 __ cmpptr(magic_number_2_addr, (int32_t) MAGIC_NUMBER_2); |
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314 __ jcc(Assembler::notEqual, L_bad); |
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315 |
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316 // Arguments pointer must look reasonable: |
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317 __ movptr(rcx_temp, saved_args_base_addr); |
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318 __ cmpptr(rcx_temp, rbp); |
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319 __ jcc(Assembler::below, L_bad); |
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320 __ subptr(rcx_temp, UNREASONABLE_STACK_MOVE * Interpreter::stackElementSize); |
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321 __ cmpptr(rcx_temp, rbp); |
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322 __ jcc(Assembler::above, L_bad); |
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323 |
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324 load_conversion_dest_type(_masm, rdi_temp, conversion_addr); |
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325 __ cmpl(rdi_temp, T_VOID); |
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326 __ jcc(Assembler::equal, L_ok); |
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327 __ movptr(rcx_temp, saved_args_base_addr); |
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328 load_conversion_vminfo(_masm, rdi_temp, conversion_addr); |
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329 __ cmpptr(Address(rcx_temp, rdi_temp, Interpreter::stackElementScale()), |
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330 (int32_t) RETURN_VALUE_PLACEHOLDER); |
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331 __ jcc(Assembler::equal, L_ok); |
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332 __ BIND(L_bad); |
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333 UNPUSH_TEMPS; |
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334 __ stop("damaged ricochet frame"); |
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335 __ BIND(L_ok); |
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336 UNPUSH_TEMPS; |
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337 BLOCK_COMMENT("} verify_clean"); |
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338 |
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339 #undef UNPUSH_TEMPS |
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340 |
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341 } |
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342 #endif //ASSERT |
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343 |
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344 void MethodHandles::load_klass_from_Class(MacroAssembler* _masm, Register klass_reg) { |
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345 if (VerifyMethodHandles) |
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346 verify_klass(_masm, klass_reg, SystemDictionaryHandles::Class_klass(), |
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347 "AMH argument is a Class"); |
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348 __ load_heap_oop(klass_reg, Address(klass_reg, java_lang_Class::klass_offset_in_bytes())); |
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349 } |
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350 |
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351 void MethodHandles::load_conversion_vminfo(MacroAssembler* _masm, Register reg, Address conversion_field_addr) { |
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352 int bits = BitsPerByte; |
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353 int offset = (CONV_VMINFO_SHIFT / bits); |
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354 int shift = (CONV_VMINFO_SHIFT % bits); |
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355 __ load_unsigned_byte(reg, conversion_field_addr.plus_disp(offset)); |
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356 assert(CONV_VMINFO_MASK == right_n_bits(bits - shift), "else change type of previous load"); |
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357 assert(shift == 0, "no shift needed"); |
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358 } |
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359 |
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360 void MethodHandles::load_conversion_dest_type(MacroAssembler* _masm, Register reg, Address conversion_field_addr) { |
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361 int bits = BitsPerByte; |
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362 int offset = (CONV_DEST_TYPE_SHIFT / bits); |
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363 int shift = (CONV_DEST_TYPE_SHIFT % bits); |
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364 __ load_unsigned_byte(reg, conversion_field_addr.plus_disp(offset)); |
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365 assert(CONV_TYPE_MASK == right_n_bits(bits - shift), "else change type of previous load"); |
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366 __ shrl(reg, shift); |
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367 DEBUG_ONLY(int conv_type_bits = (int) exact_log2(CONV_TYPE_MASK+1)); |
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368 assert((shift + conv_type_bits) == bits, "left justified in byte"); |
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369 } |
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370 |
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371 void MethodHandles::load_stack_move(MacroAssembler* _masm, |
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372 Register rdi_stack_move, |
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373 Register rcx_amh, |
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374 bool might_be_negative) { |
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375 BLOCK_COMMENT("load_stack_move {"); |
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376 Address rcx_amh_conversion(rcx_amh, java_lang_invoke_AdapterMethodHandle::conversion_offset_in_bytes()); |
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377 __ movl(rdi_stack_move, rcx_amh_conversion); |
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378 __ sarl(rdi_stack_move, CONV_STACK_MOVE_SHIFT); |
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379 #ifdef _LP64 |
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380 if (might_be_negative) { |
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381 // clean high bits of stack motion register (was loaded as an int) |
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382 __ movslq(rdi_stack_move, rdi_stack_move); |
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383 } |
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384 #endif //_LP64 |
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385 if (VerifyMethodHandles) { |
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386 Label L_ok, L_bad; |
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387 int32_t stack_move_limit = 0x4000; // extra-large |
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388 __ cmpptr(rdi_stack_move, stack_move_limit); |
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389 __ jcc(Assembler::greaterEqual, L_bad); |
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390 __ cmpptr(rdi_stack_move, -stack_move_limit); |
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391 __ jcc(Assembler::greater, L_ok); |
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392 __ bind(L_bad); |
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393 __ stop("load_stack_move of garbage value"); |
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394 __ BIND(L_ok); |
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395 } |
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396 BLOCK_COMMENT("} load_stack_move"); |
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397 } |
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398 |
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399 #ifdef ASSERT |
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400 void MethodHandles::RicochetFrame::verify_offsets() { |
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401 // Check compatibility of this struct with the more generally used offsets of class frame: |
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402 int ebp_off = sender_link_offset_in_bytes(); // offset from struct base to local rbp value |
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403 assert(ebp_off + wordSize*frame::interpreter_frame_method_offset == saved_args_base_offset_in_bytes(), ""); |
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404 assert(ebp_off + wordSize*frame::interpreter_frame_last_sp_offset == conversion_offset_in_bytes(), ""); |
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405 assert(ebp_off + wordSize*frame::interpreter_frame_sender_sp_offset == exact_sender_sp_offset_in_bytes(), ""); |
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406 // These last two have to be exact: |
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407 assert(ebp_off + wordSize*frame::link_offset == sender_link_offset_in_bytes(), ""); |
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408 assert(ebp_off + wordSize*frame::return_addr_offset == sender_pc_offset_in_bytes(), ""); |
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409 } |
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410 |
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411 void MethodHandles::RicochetFrame::verify() const { |
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412 verify_offsets(); |
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413 assert(magic_number_1() == MAGIC_NUMBER_1, ""); |
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414 assert(magic_number_2() == MAGIC_NUMBER_2, ""); |
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415 if (!Universe::heap()->is_gc_active()) { |
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416 if (saved_args_layout() != NULL) { |
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417 assert(saved_args_layout()->is_method(), "must be valid oop"); |
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418 } |
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419 if (saved_target() != NULL) { |
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420 assert(java_lang_invoke_MethodHandle::is_instance(saved_target()), "checking frame value"); |
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421 } |
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422 } |
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423 int conv_op = adapter_conversion_op(conversion()); |
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424 assert(conv_op == java_lang_invoke_AdapterMethodHandle::OP_COLLECT_ARGS || |
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425 conv_op == java_lang_invoke_AdapterMethodHandle::OP_FOLD_ARGS || |
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426 conv_op == java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_REF, |
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427 "must be a sane conversion"); |
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428 if (has_return_value_slot()) { |
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429 assert(*return_value_slot_addr() == RETURN_VALUE_PLACEHOLDER, ""); |
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430 } |
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431 } |
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432 #endif //PRODUCT |
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433 |
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434 #ifdef ASSERT |
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435 void MethodHandles::verify_argslot(MacroAssembler* _masm, |
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436 Register argslot_reg, |
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437 const char* error_message) { |
710 | 438 // Verify that argslot lies within (rsp, rbp]. |
439 Label L_ok, L_bad; | |
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440 BLOCK_COMMENT("verify_argslot {"); |
1304 | 441 __ cmpptr(argslot_reg, rbp); |
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442 __ jccb(Assembler::above, L_bad); |
1304 | 443 __ cmpptr(rsp, argslot_reg); |
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444 __ jccb(Assembler::below, L_ok); |
710 | 445 __ bind(L_bad); |
446 __ stop(error_message); | |
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447 __ BIND(L_ok); |
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448 BLOCK_COMMENT("} verify_argslot"); |
710 | 449 } |
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450 |
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451 void MethodHandles::verify_argslots(MacroAssembler* _masm, |
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452 RegisterOrConstant arg_slots, |
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453 Register arg_slot_base_reg, |
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454 bool negate_argslots, |
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455 const char* error_message) { |
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456 // Verify that [argslot..argslot+size) lies within (rsp, rbp). |
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457 Label L_ok, L_bad; |
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458 Register rdi_temp = rdi; |
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459 BLOCK_COMMENT("verify_argslots {"); |
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460 __ push(rdi_temp); |
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461 if (negate_argslots) { |
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462 if (arg_slots.is_constant()) { |
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463 arg_slots = -1 * arg_slots.as_constant(); |
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464 } else { |
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465 __ movptr(rdi_temp, arg_slots); |
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466 __ negptr(rdi_temp); |
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467 arg_slots = rdi_temp; |
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468 } |
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469 } |
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470 __ lea(rdi_temp, Address(arg_slot_base_reg, arg_slots, Interpreter::stackElementScale())); |
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471 __ cmpptr(rdi_temp, rbp); |
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472 __ pop(rdi_temp); |
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473 __ jcc(Assembler::above, L_bad); |
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474 __ cmpptr(rsp, arg_slot_base_reg); |
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475 __ jcc(Assembler::below, L_ok); |
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476 __ bind(L_bad); |
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477 __ stop(error_message); |
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478 __ BIND(L_ok); |
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479 BLOCK_COMMENT("} verify_argslots"); |
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480 } |
710 | 481 |
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482 // Make sure that arg_slots has the same sign as the given direction. |
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483 // If (and only if) arg_slots is a assembly-time constant, also allow it to be zero. |
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484 void MethodHandles::verify_stack_move(MacroAssembler* _masm, |
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485 RegisterOrConstant arg_slots, int direction) { |
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486 bool allow_zero = arg_slots.is_constant(); |
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487 if (direction == 0) { direction = +1; allow_zero = true; } |
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488 assert(stack_move_unit() == -1, "else add extra checks here"); |
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489 if (arg_slots.is_register()) { |
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490 Label L_ok, L_bad; |
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491 BLOCK_COMMENT("verify_stack_move {"); |
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492 // testl(arg_slots.as_register(), -stack_move_unit() - 1); // no need |
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493 // jcc(Assembler::notZero, L_bad); |
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494 __ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD); |
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495 if (direction > 0) { |
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496 __ jcc(allow_zero ? Assembler::less : Assembler::lessEqual, L_bad); |
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497 __ cmpptr(arg_slots.as_register(), (int32_t) UNREASONABLE_STACK_MOVE); |
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498 __ jcc(Assembler::less, L_ok); |
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499 } else { |
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500 __ jcc(allow_zero ? Assembler::greater : Assembler::greaterEqual, L_bad); |
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501 __ cmpptr(arg_slots.as_register(), (int32_t) -UNREASONABLE_STACK_MOVE); |
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502 __ jcc(Assembler::greater, L_ok); |
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503 } |
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504 __ bind(L_bad); |
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505 if (direction > 0) |
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506 __ stop("assert arg_slots > 0"); |
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507 else |
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508 __ stop("assert arg_slots < 0"); |
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509 __ BIND(L_ok); |
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510 BLOCK_COMMENT("} verify_stack_move"); |
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511 } else { |
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512 intptr_t size = arg_slots.as_constant(); |
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513 if (direction < 0) size = -size; |
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514 assert(size >= 0, "correct direction of constant move"); |
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515 assert(size < UNREASONABLE_STACK_MOVE, "reasonable size of constant move"); |
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516 } |
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517 } |
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518 |
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519 void MethodHandles::verify_klass(MacroAssembler* _masm, |
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520 Register obj, KlassHandle klass, |
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521 const char* error_message) { |
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522 oop* klass_addr = klass.raw_value(); |
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523 assert(klass_addr >= SystemDictionaryHandles::Object_klass().raw_value() && |
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524 klass_addr <= SystemDictionaryHandles::Long_klass().raw_value(), |
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525 "must be one of the SystemDictionaryHandles"); |
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526 Register temp = rdi; |
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527 Label L_ok, L_bad; |
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528 BLOCK_COMMENT("verify_klass {"); |
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529 __ verify_oop(obj); |
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530 __ testptr(obj, obj); |
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531 __ jcc(Assembler::zero, L_bad); |
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532 __ push(temp); |
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533 __ load_klass(temp, obj); |
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534 __ cmpptr(temp, ExternalAddress((address) klass_addr)); |
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535 __ jcc(Assembler::equal, L_ok); |
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536 intptr_t super_check_offset = klass->super_check_offset(); |
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537 __ movptr(temp, Address(temp, super_check_offset)); |
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538 __ cmpptr(temp, ExternalAddress((address) klass_addr)); |
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539 __ jcc(Assembler::equal, L_ok); |
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540 __ pop(temp); |
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541 __ bind(L_bad); |
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542 __ stop(error_message); |
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543 __ BIND(L_ok); |
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544 __ pop(temp); |
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545 BLOCK_COMMENT("} verify_klass"); |
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546 } |
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547 #endif //ASSERT |
710 | 548 |
3808
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549 void MethodHandles::jump_from_method_handle(MacroAssembler* _masm, Register method, Register temp) { |
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550 if (JvmtiExport::can_post_interpreter_events()) { |
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551 Label run_compiled_code; |
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552 // JVMTI events, such as single-stepping, are implemented partly by avoiding running |
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553 // compiled code in threads for which the event is enabled. Check here for |
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554 // interp_only_mode if these events CAN be enabled. |
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555 #ifdef _LP64 |
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556 Register rthread = r15_thread; |
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557 #else |
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558 Register rthread = temp; |
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559 __ get_thread(rthread); |
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560 #endif |
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561 // interp_only is an int, on little endian it is sufficient to test the byte only |
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562 // Is a cmpl faster? |
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563 __ cmpb(Address(rthread, JavaThread::interp_only_mode_offset()), 0); |
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564 __ jccb(Assembler::zero, run_compiled_code); |
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565 __ jmp(Address(method, methodOopDesc::interpreter_entry_offset())); |
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566 __ bind(run_compiled_code); |
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567 } |
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568 __ jmp(Address(method, methodOopDesc::from_interpreted_offset())); |
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569 } |
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570 |
710 | 571 // Code generation |
572 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) { | |
573 // rbx: methodOop | |
574 // rcx: receiver method handle (must load from sp[MethodTypeForm.vmslots]) | |
575 // rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted) | |
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576 // rdx, rdi: garbage temp, blown away |
710 | 577 |
578 Register rbx_method = rbx; | |
579 Register rcx_recv = rcx; | |
580 Register rax_mtype = rax; | |
581 Register rdx_temp = rdx; | |
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582 Register rdi_temp = rdi; |
710 | 583 |
584 // emit WrongMethodType path first, to enable jccb back-branch from main path | |
585 Label wrong_method_type; | |
586 __ bind(wrong_method_type); | |
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587 Label invoke_generic_slow_path, invoke_exact_error_path; |
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588 assert(methodOopDesc::intrinsic_id_size_in_bytes() == sizeof(u1), "");; |
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589 __ cmpb(Address(rbx_method, methodOopDesc::intrinsic_id_offset_in_bytes()), (int) vmIntrinsics::_invokeExact); |
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590 __ jcc(Assembler::notEqual, invoke_generic_slow_path); |
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591 __ jmp(invoke_exact_error_path); |
710 | 592 |
593 // here's where control starts out: | |
594 __ align(CodeEntryAlignment); | |
595 address entry_point = __ pc(); | |
596 | |
597 // fetch the MethodType from the method handle into rax (the 'check' register) | |
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598 // FIXME: Interpreter should transmit pre-popped stack pointer, to locate base of arg list. |
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599 // This would simplify several touchy bits of code. |
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600 // See 6984712: JSR 292 method handle calls need a clean argument base pointer |
710 | 601 { |
602 Register tem = rbx_method; | |
603 for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) { | |
604 __ movptr(rax_mtype, Address(tem, *pchase)); | |
605 tem = rax_mtype; // in case there is another indirection | |
606 } | |
607 } | |
608 | |
609 // given the MethodType, find out where the MH argument is buried | |
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610 __ load_heap_oop(rdx_temp, Address(rax_mtype, __ delayed_value(java_lang_invoke_MethodType::form_offset_in_bytes, rdi_temp))); |
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611 Register rdx_vmslots = rdx_temp; |
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612 __ movl(rdx_vmslots, Address(rdx_temp, __ delayed_value(java_lang_invoke_MethodTypeForm::vmslots_offset_in_bytes, rdi_temp))); |
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613 Address mh_receiver_slot_addr = __ argument_address(rdx_vmslots); |
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614 __ movptr(rcx_recv, mh_receiver_slot_addr); |
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615 |
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616 trace_method_handle(_masm, "invokeExact"); |
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617 |
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618 __ check_method_handle_type(rax_mtype, rcx_recv, rdi_temp, wrong_method_type); |
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619 |
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620 // Nobody uses the MH receiver slot after this. Make sure. |
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621 DEBUG_ONLY(__ movptr(mh_receiver_slot_addr, (int32_t)0x999999)); |
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622 |
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623 __ jump_to_method_handle_entry(rcx_recv, rdi_temp); |
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624 |
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625 // error path for invokeExact (only) |
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626 __ bind(invoke_exact_error_path); |
3937 | 627 // ensure that the top of stack is properly aligned. |
628 __ mov(rdi, rsp); | |
629 __ andptr(rsp, -StackAlignmentInBytes); // Align the stack for the ABI | |
630 __ pushptr(Address(rdi, 0)); // Pick up the return address | |
631 | |
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632 // Stub wants expected type in rax and the actual type in rcx |
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633 __ jump(ExternalAddress(StubRoutines::throw_WrongMethodTypeException_entry())); |
3755
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634 |
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635 // for invokeGeneric (only), apply argument and result conversions on the fly |
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636 __ bind(invoke_generic_slow_path); |
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637 #ifdef ASSERT |
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638 if (VerifyMethodHandles) { |
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639 Label L; |
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640 __ cmpb(Address(rbx_method, methodOopDesc::intrinsic_id_offset_in_bytes()), (int) vmIntrinsics::_invokeGeneric); |
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641 __ jcc(Assembler::equal, L); |
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642 __ stop("bad methodOop::intrinsic_id"); |
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643 __ bind(L); |
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644 } |
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645 #endif //ASSERT |
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646 Register rbx_temp = rbx_method; // don't need it now |
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647 |
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648 // make room on the stack for another pointer: |
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649 Register rcx_argslot = rcx_recv; |
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650 __ lea(rcx_argslot, __ argument_address(rdx_vmslots, 1)); |
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651 insert_arg_slots(_masm, 2 * stack_move_unit(), |
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652 rcx_argslot, rbx_temp, rdx_temp); |
710 | 653 |
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654 // load up an adapter from the calling type (Java weaves this) |
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655 Register rdx_adapter = rdx_temp; |
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656 __ load_heap_oop(rdx_temp, Address(rax_mtype, __ delayed_value(java_lang_invoke_MethodType::form_offset_in_bytes, rdi_temp))); |
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657 __ load_heap_oop(rdx_adapter, Address(rdx_temp, __ delayed_value(java_lang_invoke_MethodTypeForm::genericInvoker_offset_in_bytes, rdi_temp))); |
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658 __ verify_oop(rdx_adapter); |
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659 __ movptr(Address(rcx_argslot, 1 * Interpreter::stackElementSize), rdx_adapter); |
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660 // As a trusted first argument, pass the type being called, so the adapter knows |
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661 // the actual types of the arguments and return values. |
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662 // (Generic invokers are shared among form-families of method-type.) |
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663 __ movptr(Address(rcx_argslot, 0 * Interpreter::stackElementSize), rax_mtype); |
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664 // FIXME: assert that rdx_adapter is of the right method-type. |
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665 __ mov(rcx, rdx_adapter); |
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666 trace_method_handle(_masm, "invokeGeneric"); |
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667 __ jump_to_method_handle_entry(rcx, rdi_temp); |
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668 |
710 | 669 return entry_point; |
670 } | |
671 | |
672 // Helper to insert argument slots into the stack. | |
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673 // arg_slots must be a multiple of stack_move_unit() and < 0 |
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674 // rax_argslot is decremented to point to the new (shifted) location of the argslot |
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675 // But, rdx_temp ends up holding the original value of rax_argslot. |
710 | 676 void MethodHandles::insert_arg_slots(MacroAssembler* _masm, |
677 RegisterOrConstant arg_slots, | |
678 Register rax_argslot, | |
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679 Register rbx_temp, Register rdx_temp) { |
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680 // allow constant zero |
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681 if (arg_slots.is_constant() && arg_slots.as_constant() == 0) |
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682 return; |
710 | 683 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, |
684 (!arg_slots.is_register() ? rsp : arg_slots.as_register())); | |
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685 if (VerifyMethodHandles) |
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686 verify_argslot(_masm, rax_argslot, "insertion point must fall within current frame"); |
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687 if (VerifyMethodHandles) |
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688 verify_stack_move(_masm, arg_slots, -1); |
710 | 689 |
690 // Make space on the stack for the inserted argument(s). | |
691 // Then pull down everything shallower than rax_argslot. | |
692 // The stacked return address gets pulled down with everything else. | |
693 // That is, copy [rsp, argslot) downward by -size words. In pseudo-code: | |
694 // rsp -= size; | |
695 // for (rdx = rsp + size; rdx < argslot; rdx++) | |
696 // rdx[-size] = rdx[0] | |
697 // argslot -= size; | |
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698 BLOCK_COMMENT("insert_arg_slots {"); |
710 | 699 __ mov(rdx_temp, rsp); // source pointer for copy |
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700 __ lea(rsp, Address(rsp, arg_slots, Interpreter::stackElementScale())); |
710 | 701 { |
702 Label loop; | |
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703 __ BIND(loop); |
710 | 704 // pull one word down each time through the loop |
705 __ movptr(rbx_temp, Address(rdx_temp, 0)); | |
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706 __ movptr(Address(rdx_temp, arg_slots, Interpreter::stackElementScale()), rbx_temp); |
710 | 707 __ addptr(rdx_temp, wordSize); |
708 __ cmpptr(rdx_temp, rax_argslot); | |
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709 __ jcc(Assembler::below, loop); |
710 | 710 } |
711 | |
712 // Now move the argslot down, to point to the opened-up space. | |
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713 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Interpreter::stackElementScale())); |
1793
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714 BLOCK_COMMENT("} insert_arg_slots"); |
710 | 715 } |
716 | |
717 // Helper to remove argument slots from the stack. | |
3363
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718 // arg_slots must be a multiple of stack_move_unit() and > 0 |
710 | 719 void MethodHandles::remove_arg_slots(MacroAssembler* _masm, |
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720 RegisterOrConstant arg_slots, |
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|
721 Register rax_argslot, |
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722 Register rbx_temp, Register rdx_temp) { |
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|
723 // allow constant zero |
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724 if (arg_slots.is_constant() && arg_slots.as_constant() == 0) |
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725 return; |
710 | 726 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, |
727 (!arg_slots.is_register() ? rsp : arg_slots.as_register())); | |
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728 if (VerifyMethodHandles) |
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|
729 verify_argslots(_masm, arg_slots, rax_argslot, false, |
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|
730 "deleted argument(s) must fall within current frame"); |
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731 if (VerifyMethodHandles) |
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732 verify_stack_move(_masm, arg_slots, +1); |
710 | 733 |
1793
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734 BLOCK_COMMENT("remove_arg_slots {"); |
710 | 735 // Pull up everything shallower than rax_argslot. |
736 // Then remove the excess space on the stack. | |
737 // The stacked return address gets pulled up with everything else. | |
738 // That is, copy [rsp, argslot) upward by size words. In pseudo-code: | |
739 // for (rdx = argslot-1; rdx >= rsp; --rdx) | |
740 // rdx[size] = rdx[0] | |
741 // argslot += size; | |
742 // rsp += size; | |
743 __ lea(rdx_temp, Address(rax_argslot, -wordSize)); // source pointer for copy | |
744 { | |
745 Label loop; | |
1793
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|
746 __ BIND(loop); |
710 | 747 // pull one word up each time through the loop |
748 __ movptr(rbx_temp, Address(rdx_temp, 0)); | |
3363
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749 __ movptr(Address(rdx_temp, arg_slots, Interpreter::stackElementScale()), rbx_temp); |
710 | 750 __ addptr(rdx_temp, -wordSize); |
751 __ cmpptr(rdx_temp, rsp); | |
3371
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752 __ jcc(Assembler::aboveEqual, loop); |
710 | 753 } |
754 | |
755 // Now move the argslot up, to point to the just-copied block. | |
3363
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756 __ lea(rsp, Address(rsp, arg_slots, Interpreter::stackElementScale())); |
710 | 757 // And adjust the argslot address to point at the deletion point. |
3363
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758 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Interpreter::stackElementScale())); |
1793
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759 BLOCK_COMMENT("} remove_arg_slots"); |
710 | 760 } |
761 | |
3363
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|
762 // Helper to copy argument slots to the top of the stack. |
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|
763 // The sequence starts with rax_argslot and is counted by slot_count |
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764 // slot_count must be a multiple of stack_move_unit() and >= 0 |
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|
765 // This function blows the temps but does not change rax_argslot. |
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|
766 void MethodHandles::push_arg_slots(MacroAssembler* _masm, |
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|
767 Register rax_argslot, |
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|
768 RegisterOrConstant slot_count, |
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|
769 int skip_words_count, |
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|
770 Register rbx_temp, Register rdx_temp) { |
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diff
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|
771 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, |
167b70ff3abc
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|
772 (!slot_count.is_register() ? rbp : slot_count.as_register()), |
167b70ff3abc
6939861: JVM should handle more conversion operations
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|
773 rsp); |
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|
774 assert(Interpreter::stackElementSize == wordSize, "else change this code"); |
167b70ff3abc
6939861: JVM should handle more conversion operations
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|
775 |
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|
776 if (VerifyMethodHandles) |
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|
777 verify_stack_move(_masm, slot_count, 0); |
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diff
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|
778 |
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|
779 // allow constant zero |
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|
780 if (slot_count.is_constant() && slot_count.as_constant() == 0) |
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|
781 return; |
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|
782 |
167b70ff3abc
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783 BLOCK_COMMENT("push_arg_slots {"); |
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|
784 |
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6939861: JVM should handle more conversion operations
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|
785 Register rbx_top = rbx_temp; |
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diff
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|
786 |
167b70ff3abc
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|
787 // There is at most 1 word to carry down with the TOS. |
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|
788 switch (skip_words_count) { |
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diff
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|
789 case 1: __ pop(rdx_temp); break; |
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790 case 0: break; |
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791 default: ShouldNotReachHere(); |
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792 } |
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|
793 |
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|
794 if (slot_count.is_constant()) { |
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|
795 for (int i = slot_count.as_constant() - 1; i >= 0; i--) { |
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796 __ pushptr(Address(rax_argslot, i * wordSize)); |
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|
797 } |
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|
798 } else { |
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|
799 Label L_plural, L_loop, L_break; |
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diff
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|
800 // Emit code to dynamically check for the common cases, zero and one slot. |
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801 __ cmpl(slot_count.as_register(), (int32_t) 1); |
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|
802 __ jccb(Assembler::greater, L_plural); |
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|
803 __ jccb(Assembler::less, L_break); |
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|
804 __ pushptr(Address(rax_argslot, 0)); |
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|
805 __ jmpb(L_break); |
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|
806 __ BIND(L_plural); |
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|
807 |
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|
808 // Loop for 2 or more: |
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|
809 // rbx = &rax[slot_count] |
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|
810 // while (rbx > rax) *(--rsp) = *(--rbx) |
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811 __ lea(rbx_top, Address(rax_argslot, slot_count, Address::times_ptr)); |
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|
812 __ BIND(L_loop); |
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never
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diff
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|
813 __ subptr(rbx_top, wordSize); |
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diff
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|
814 __ pushptr(Address(rbx_top, 0)); |
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diff
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|
815 __ cmpptr(rbx_top, rax_argslot); |
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parents:
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diff
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|
816 __ jcc(Assembler::above, L_loop); |
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diff
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|
817 __ bind(L_break); |
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|
818 } |
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diff
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|
819 switch (skip_words_count) { |
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|
820 case 1: __ push(rdx_temp); break; |
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|
821 case 0: break; |
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|
822 default: ShouldNotReachHere(); |
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|
823 } |
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|
824 BLOCK_COMMENT("} push_arg_slots"); |
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|
825 } |
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diff
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|
826 |
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|
827 // in-place movement; no change to rsp |
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|
828 // blows rax_temp, rdx_temp |
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|
829 void MethodHandles::move_arg_slots_up(MacroAssembler* _masm, |
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830 Register rbx_bottom, // invariant |
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diff
changeset
|
831 Address top_addr, // can use rax_temp |
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diff
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|
832 RegisterOrConstant positive_distance_in_slots, |
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diff
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|
833 Register rax_temp, Register rdx_temp) { |
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diff
changeset
|
834 BLOCK_COMMENT("move_arg_slots_up {"); |
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diff
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|
835 assert_different_registers(rbx_bottom, |
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diff
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|
836 rax_temp, rdx_temp, |
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diff
changeset
|
837 positive_distance_in_slots.register_or_noreg()); |
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parents:
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diff
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|
838 Label L_loop, L_break; |
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diff
changeset
|
839 Register rax_top = rax_temp; |
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changeset
|
840 if (!top_addr.is_same_address(Address(rax_top, 0))) |
167b70ff3abc
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diff
changeset
|
841 __ lea(rax_top, top_addr); |
167b70ff3abc
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parents:
3336
diff
changeset
|
842 // Detect empty (or broken) loop: |
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parents:
3336
diff
changeset
|
843 #ifdef ASSERT |
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parents:
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diff
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|
844 if (VerifyMethodHandles) { |
167b70ff3abc
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parents:
3336
diff
changeset
|
845 // Verify that &bottom < &top (non-empty interval) |
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parents:
3336
diff
changeset
|
846 Label L_ok, L_bad; |
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diff
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|
847 if (positive_distance_in_slots.is_register()) { |
167b70ff3abc
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parents:
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diff
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|
848 __ cmpptr(positive_distance_in_slots.as_register(), (int32_t) 0); |
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parents:
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diff
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|
849 __ jcc(Assembler::lessEqual, L_bad); |
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parents:
3336
diff
changeset
|
850 } |
167b70ff3abc
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diff
changeset
|
851 __ cmpptr(rbx_bottom, rax_top); |
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parents:
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diff
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|
852 __ jcc(Assembler::below, L_ok); |
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diff
changeset
|
853 __ bind(L_bad); |
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diff
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|
854 __ stop("valid bounds (copy up)"); |
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diff
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|
855 __ BIND(L_ok); |
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|
856 } |
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|
857 #endif |
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858 __ cmpptr(rbx_bottom, rax_top); |
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diff
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|
859 __ jccb(Assembler::aboveEqual, L_break); |
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diff
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|
860 // work rax down to rbx, copying contiguous data upwards |
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diff
changeset
|
861 // In pseudo-code: |
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|
862 // [rbx, rax) = &[bottom, top) |
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diff
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|
863 // while (--rax >= rbx) *(rax + distance) = *(rax + 0), rax--; |
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|
864 __ BIND(L_loop); |
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diff
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|
865 __ subptr(rax_top, wordSize); |
167b70ff3abc
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diff
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|
866 __ movptr(rdx_temp, Address(rax_top, 0)); |
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parents:
3336
diff
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|
867 __ movptr( Address(rax_top, positive_distance_in_slots, Address::times_ptr), rdx_temp); |
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diff
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|
868 __ cmpptr(rax_top, rbx_bottom); |
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3336
diff
changeset
|
869 __ jcc(Assembler::above, L_loop); |
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3336
diff
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|
870 assert(Interpreter::stackElementSize == wordSize, "else change loop"); |
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parents:
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diff
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|
871 __ bind(L_break); |
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parents:
3336
diff
changeset
|
872 BLOCK_COMMENT("} move_arg_slots_up"); |
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|
873 } |
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diff
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|
874 |
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diff
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|
875 // in-place movement; no change to rsp |
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parents:
3336
diff
changeset
|
876 // blows rax_temp, rdx_temp |
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|
877 void MethodHandles::move_arg_slots_down(MacroAssembler* _masm, |
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diff
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|
878 Address bottom_addr, // can use rax_temp |
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diff
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|
879 Register rbx_top, // invariant |
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diff
changeset
|
880 RegisterOrConstant negative_distance_in_slots, |
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diff
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|
881 Register rax_temp, Register rdx_temp) { |
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diff
changeset
|
882 BLOCK_COMMENT("move_arg_slots_down {"); |
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3336
diff
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|
883 assert_different_registers(rbx_top, |
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diff
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|
884 negative_distance_in_slots.register_or_noreg(), |
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diff
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|
885 rax_temp, rdx_temp); |
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diff
changeset
|
886 Label L_loop, L_break; |
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diff
changeset
|
887 Register rax_bottom = rax_temp; |
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|
888 if (!bottom_addr.is_same_address(Address(rax_bottom, 0))) |
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3336
diff
changeset
|
889 __ lea(rax_bottom, bottom_addr); |
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3336
diff
changeset
|
890 // Detect empty (or broken) loop: |
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diff
changeset
|
891 #ifdef ASSERT |
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diff
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|
892 assert(!negative_distance_in_slots.is_constant() || negative_distance_in_slots.as_constant() < 0, ""); |
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parents:
3336
diff
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|
893 if (VerifyMethodHandles) { |
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parents:
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diff
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|
894 // Verify that &bottom < &top (non-empty interval) |
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parents:
3336
diff
changeset
|
895 Label L_ok, L_bad; |
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diff
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|
896 if (negative_distance_in_slots.is_register()) { |
167b70ff3abc
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diff
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|
897 __ cmpptr(negative_distance_in_slots.as_register(), (int32_t) 0); |
167b70ff3abc
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diff
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|
898 __ jcc(Assembler::greaterEqual, L_bad); |
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diff
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|
899 } |
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|
900 __ cmpptr(rax_bottom, rbx_top); |
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|
901 __ jcc(Assembler::below, L_ok); |
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|
902 __ bind(L_bad); |
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diff
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|
903 __ stop("valid bounds (copy down)"); |
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parents:
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diff
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|
904 __ BIND(L_ok); |
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diff
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|
905 } |
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|
906 #endif |
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|
907 __ cmpptr(rax_bottom, rbx_top); |
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diff
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|
908 __ jccb(Assembler::aboveEqual, L_break); |
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3336
diff
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|
909 // work rax up to rbx, copying contiguous data downwards |
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diff
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|
910 // In pseudo-code: |
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|
911 // [rax, rbx) = &[bottom, top) |
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|
912 // while (rax < rbx) *(rax - distance) = *(rax + 0), rax++; |
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diff
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|
913 __ BIND(L_loop); |
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diff
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|
914 __ movptr(rdx_temp, Address(rax_bottom, 0)); |
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diff
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|
915 __ movptr( Address(rax_bottom, negative_distance_in_slots, Address::times_ptr), rdx_temp); |
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3336
diff
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|
916 __ addptr(rax_bottom, wordSize); |
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parents:
3336
diff
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|
917 __ cmpptr(rax_bottom, rbx_top); |
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parents:
3336
diff
changeset
|
918 __ jcc(Assembler::below, L_loop); |
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3336
diff
changeset
|
919 assert(Interpreter::stackElementSize == wordSize, "else change loop"); |
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diff
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|
920 __ bind(L_break); |
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parents:
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diff
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|
921 BLOCK_COMMENT("} move_arg_slots_down"); |
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diff
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|
922 } |
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diff
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|
923 |
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|
924 // Copy from a field or array element to a stacked argument slot. |
167b70ff3abc
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|
925 // is_element (ignored) says whether caller is loading an array element instead of an instance field. |
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3336
diff
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|
926 void MethodHandles::move_typed_arg(MacroAssembler* _masm, |
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diff
changeset
|
927 BasicType type, bool is_element, |
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diff
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|
928 Address slot_dest, Address value_src, |
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diff
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|
929 Register rbx_temp, Register rdx_temp) { |
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930 BLOCK_COMMENT(!is_element ? "move_typed_arg {" : "move_typed_arg { (array element)"); |
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931 if (type == T_OBJECT || type == T_ARRAY) { |
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932 __ load_heap_oop(rbx_temp, value_src); |
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|
933 __ movptr(slot_dest, rbx_temp); |
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934 } else if (type != T_VOID) { |
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935 int arg_size = type2aelembytes(type); |
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936 bool arg_is_signed = is_signed_subword_type(type); |
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937 int slot_size = (arg_size > wordSize) ? arg_size : wordSize; |
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938 __ load_sized_value( rdx_temp, value_src, arg_size, arg_is_signed, rbx_temp); |
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939 __ store_sized_value( slot_dest, rdx_temp, slot_size, rbx_temp); |
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940 } |
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941 BLOCK_COMMENT("} move_typed_arg"); |
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942 } |
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943 |
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944 void MethodHandles::move_return_value(MacroAssembler* _masm, BasicType type, |
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945 Address return_slot) { |
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946 BLOCK_COMMENT("move_return_value {"); |
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947 // Old versions of the JVM must clean the FPU stack after every return. |
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948 #ifndef _LP64 |
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949 #ifdef COMPILER2 |
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950 // The FPU stack is clean if UseSSE >= 2 but must be cleaned in other cases |
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951 if ((type == T_FLOAT && UseSSE < 1) || (type == T_DOUBLE && UseSSE < 2)) { |
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952 for (int i = 1; i < 8; i++) { |
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953 __ ffree(i); |
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954 } |
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955 } else if (UseSSE < 2) { |
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956 __ empty_FPU_stack(); |
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957 } |
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958 #endif //COMPILER2 |
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959 #endif //!_LP64 |
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960 |
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961 // Look at the type and pull the value out of the corresponding register. |
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962 if (type == T_VOID) { |
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963 // nothing to do |
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964 } else if (type == T_OBJECT) { |
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965 __ movptr(return_slot, rax); |
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966 } else if (type == T_INT || is_subword_type(type)) { |
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967 // write the whole word, even if only 32 bits is significant |
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968 __ movptr(return_slot, rax); |
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969 } else if (type == T_LONG) { |
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970 // store the value by parts |
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971 // Note: We assume longs are continguous (if misaligned) on the interpreter stack. |
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972 __ store_sized_value(return_slot, rax, BytesPerLong, rdx); |
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973 } else if (NOT_LP64((type == T_FLOAT && UseSSE < 1) || |
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974 (type == T_DOUBLE && UseSSE < 2) ||) |
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975 false) { |
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976 // Use old x86 FPU registers: |
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977 if (type == T_FLOAT) |
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978 __ fstp_s(return_slot); |
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979 else |
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980 __ fstp_d(return_slot); |
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981 } else if (type == T_FLOAT) { |
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982 __ movflt(return_slot, xmm0); |
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983 } else if (type == T_DOUBLE) { |
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984 __ movdbl(return_slot, xmm0); |
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985 } else { |
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986 ShouldNotReachHere(); |
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987 } |
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988 BLOCK_COMMENT("} move_return_value"); |
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989 } |
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990 |
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991 |
710 | 992 #ifndef PRODUCT |
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993 extern "C" void print_method_handle(oop mh); |
710 | 994 void trace_method_handle_stub(const char* adaptername, |
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995 oop mh, |
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996 intptr_t* saved_regs, |
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997 intptr_t* entry_sp, |
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998 intptr_t* saved_sp, |
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999 intptr_t* saved_bp) { |
710 | 1000 // called as a leaf from native code: do not block the JVM! |
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1001 bool has_mh = (strstr(adaptername, "return/") == NULL); // return adapters don't have rcx_mh |
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1002 intptr_t* last_sp = (intptr_t*) saved_bp[frame::interpreter_frame_last_sp_offset]; |
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1003 intptr_t* base_sp = last_sp; |
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1004 typedef MethodHandles::RicochetFrame RicochetFrame; |
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1005 RicochetFrame* rfp = (RicochetFrame*)((address)saved_bp - RicochetFrame::sender_link_offset_in_bytes()); |
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1006 if (!UseRicochetFrames || Universe::heap()->is_in((address) rfp->saved_args_base())) { |
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1007 // Probably an interpreter frame. |
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1008 base_sp = (intptr_t*) saved_bp[frame::interpreter_frame_monitor_block_top_offset]; |
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1009 } |
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1010 intptr_t mh_reg = (intptr_t)mh; |
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1011 const char* mh_reg_name = "rcx_mh"; |
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1012 if (!has_mh) mh_reg_name = "rcx"; |
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1013 tty->print_cr("MH %s %s="PTR_FORMAT" sp=("PTR_FORMAT"+"INTX_FORMAT") stack_size="INTX_FORMAT" bp="PTR_FORMAT, |
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1014 adaptername, mh_reg_name, mh_reg, |
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1015 (intptr_t)entry_sp, (intptr_t)(saved_sp - entry_sp), (intptr_t)(base_sp - last_sp), (intptr_t)saved_bp); |
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1016 if (Verbose) { |
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1017 tty->print(" reg dump: "); |
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1018 int saved_regs_count = (entry_sp-1) - saved_regs; |
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1019 // 32 bit: rdi rsi rbp rsp; rbx rdx rcx (*) rax |
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1020 int i; |
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1021 for (i = 0; i <= saved_regs_count; i++) { |
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1022 if (i > 0 && i % 4 == 0 && i != saved_regs_count) { |
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1023 tty->cr(); |
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1024 tty->print(" + dump: "); |
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1025 } |
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1026 tty->print(" %d: "PTR_FORMAT, i, saved_regs[i]); |
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1027 } |
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1028 tty->cr(); |
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1029 if (last_sp != saved_sp && last_sp != NULL) |
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1030 tty->print_cr("*** last_sp="PTR_FORMAT, (intptr_t)last_sp); |
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1031 int stack_dump_count = 16; |
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1032 if (stack_dump_count < (int)(saved_bp + 2 - saved_sp)) |
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1033 stack_dump_count = (int)(saved_bp + 2 - saved_sp); |
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1034 if (stack_dump_count > 64) stack_dump_count = 48; |
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1035 for (i = 0; i < stack_dump_count; i += 4) { |
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1036 tty->print_cr(" dump at SP[%d] "PTR_FORMAT": "PTR_FORMAT" "PTR_FORMAT" "PTR_FORMAT" "PTR_FORMAT, |
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1037 i, (intptr_t) &entry_sp[i+0], entry_sp[i+0], entry_sp[i+1], entry_sp[i+2], entry_sp[i+3]); |
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1038 } |
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1039 if (has_mh) |
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1040 print_method_handle(mh); |
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1041 } |
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1042 } |
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1043 |
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1044 // The stub wraps the arguments in a struct on the stack to avoid |
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1045 // dealing with the different calling conventions for passing 6 |
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1046 // arguments. |
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1047 struct MethodHandleStubArguments { |
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1048 const char* adaptername; |
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1049 oopDesc* mh; |
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1050 intptr_t* saved_regs; |
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1051 intptr_t* entry_sp; |
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1052 intptr_t* saved_sp; |
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1053 intptr_t* saved_bp; |
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1054 }; |
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1055 void trace_method_handle_stub_wrapper(MethodHandleStubArguments* args) { |
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1056 trace_method_handle_stub(args->adaptername, |
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1057 args->mh, |
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1058 args->saved_regs, |
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1059 args->entry_sp, |
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1060 args->saved_sp, |
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1061 args->saved_bp); |
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1062 } |
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1063 |
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1064 void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) { |
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1065 if (!TraceMethodHandles) return; |
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1066 BLOCK_COMMENT("trace_method_handle {"); |
3363
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1067 __ push(rax); |
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1068 __ lea(rax, Address(rsp, wordSize * NOT_LP64(6) LP64_ONLY(14))); // entry_sp __ pusha(); |
1793
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1069 __ pusha(); |
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1070 __ mov(rbx, rsp); |
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1071 __ enter(); |
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1072 // incoming state: |
3336
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1073 // rcx: method handle |
3363
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1074 // r13 or rsi: saved sp |
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1075 // To avoid calling convention issues, build a record on the stack and pass the pointer to that instead. |
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1076 __ push(rbp); // saved_bp |
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1077 __ push(rsi); // saved_sp |
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1078 __ push(rax); // entry_sp |
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1079 __ push(rbx); // pusha saved_regs |
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1080 __ push(rcx); // mh |
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1081 __ push(rcx); // adaptername |
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1082 __ movptr(Address(rsp, 0), (intptr_t) adaptername); |
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1083 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub_wrapper), rsp); |
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1084 __ leave(); |
1793
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1085 __ popa(); |
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1086 __ pop(rax); |
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1087 BLOCK_COMMENT("} trace_method_handle"); |
710 | 1088 } |
1089 #endif //PRODUCT | |
1090 | |
1507
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1091 // which conversion op types are implemented here? |
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1092 int MethodHandles::adapter_conversion_ops_supported_mask() { |
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1093 return ((1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_ONLY) |
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1094 |(1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_RAW) |
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1095 |(1<<java_lang_invoke_AdapterMethodHandle::OP_CHECK_CAST) |
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1096 |(1<<java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_PRIM) |
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1097 |(1<<java_lang_invoke_AdapterMethodHandle::OP_REF_TO_PRIM) |
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1098 //OP_PRIM_TO_REF is below... |
2357
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1099 |(1<<java_lang_invoke_AdapterMethodHandle::OP_SWAP_ARGS) |
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1100 |(1<<java_lang_invoke_AdapterMethodHandle::OP_ROT_ARGS) |
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1101 |(1<<java_lang_invoke_AdapterMethodHandle::OP_DUP_ARGS) |
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1102 |(1<<java_lang_invoke_AdapterMethodHandle::OP_DROP_ARGS) |
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1103 //OP_COLLECT_ARGS is below... |
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1104 |(1<<java_lang_invoke_AdapterMethodHandle::OP_SPREAD_ARGS) |
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1105 |(!UseRicochetFrames ? 0 : |
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1106 java_lang_invoke_MethodTypeForm::vmlayout_offset_in_bytes() <= 0 ? 0 : |
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1107 ((1<<java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_REF) |
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1108 |(1<<java_lang_invoke_AdapterMethodHandle::OP_COLLECT_ARGS) |
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1109 |(1<<java_lang_invoke_AdapterMethodHandle::OP_FOLD_ARGS) |
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1110 )) |
1507
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1111 ); |
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1112 } |
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1113 |
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1114 //------------------------------------------------------------------------------ |
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1115 // MethodHandles::generate_method_handle_stub |
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1116 // |
710 | 1117 // Generate an "entry" field for a method handle. |
1118 // This determines how the method handle will respond to calls. | |
2116
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1119 void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) { |
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1120 MethodHandles::EntryKind ek_orig = ek_original_kind(ek); |
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1121 |
710 | 1122 // Here is the register state during an interpreted call, |
1123 // as set up by generate_method_handle_interpreter_entry(): | |
1124 // - rbx: garbage temp (was MethodHandle.invoke methodOop, unused) | |
1125 // - rcx: receiver method handle | |
1126 // - rax: method handle type (only used by the check_mtype entry point) | |
1127 // - rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted) | |
1128 // - rdx: garbage temp, can blow away | |
1129 | |
2088
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1130 const Register rcx_recv = rcx; |
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1131 const Register rax_argslot = rax; |
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1132 const Register rbx_temp = rbx; |
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1133 const Register rdx_temp = rdx; |
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1134 const Register rdi_temp = rdi; |
710 | 1135 |
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1136 // This guy is set up by prepare_to_jump_from_interpreted (from interpreted calls) |
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1137 // and gen_c2i_adapter (from compiled calls): |
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1138 const Register saved_last_sp = saved_last_sp_register(); |
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1139 |
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1140 // Argument registers for _raise_exception. |
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1141 // 32-bit: Pass first two oop/int args in registers ECX and EDX. |
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1142 const Register rarg0_code = LP64_ONLY(j_rarg0) NOT_LP64(rcx); |
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1143 const Register rarg1_actual = LP64_ONLY(j_rarg1) NOT_LP64(rdx); |
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1144 const Register rarg2_required = LP64_ONLY(j_rarg2) NOT_LP64(rdi); |
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1145 assert_different_registers(rarg0_code, rarg1_actual, rarg2_required, saved_last_sp); |
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1146 |
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1147 guarantee(java_lang_invoke_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets"); |
710 | 1148 |
1149 // some handy addresses | |
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1150 Address rcx_mh_vmtarget( rcx_recv, java_lang_invoke_MethodHandle::vmtarget_offset_in_bytes() ); |
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1151 Address rcx_dmh_vmindex( rcx_recv, java_lang_invoke_DirectMethodHandle::vmindex_offset_in_bytes() ); |
710 | 1152 |
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1153 Address rcx_bmh_vmargslot( rcx_recv, java_lang_invoke_BoundMethodHandle::vmargslot_offset_in_bytes() ); |
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1154 Address rcx_bmh_argument( rcx_recv, java_lang_invoke_BoundMethodHandle::argument_offset_in_bytes() ); |
710 | 1155 |
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1156 Address rcx_amh_vmargslot( rcx_recv, java_lang_invoke_AdapterMethodHandle::vmargslot_offset_in_bytes() ); |
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1157 Address rcx_amh_argument( rcx_recv, java_lang_invoke_AdapterMethodHandle::argument_offset_in_bytes() ); |
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1158 Address rcx_amh_conversion( rcx_recv, java_lang_invoke_AdapterMethodHandle::conversion_offset_in_bytes() ); |
710 | 1159 Address vmarg; // __ argument_address(vmargslot) |
1160 | |
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1161 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); |
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1162 |
710 | 1163 if (have_entry(ek)) { |
1164 __ nop(); // empty stubs make SG sick | |
1165 return; | |
1166 } | |
1167 | |
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1168 #ifdef ASSERT |
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1169 __ push((int32_t) 0xEEEEEEEE); |
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1170 __ push((int32_t) (intptr_t) entry_name(ek)); |
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1171 LP64_ONLY(__ push((int32_t) high((intptr_t) entry_name(ek)))); |
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1172 __ push((int32_t) 0x33333333); |
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1173 #endif //ASSERT |
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1174 |
710 | 1175 address interp_entry = __ pc(); |
1176 | |
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1177 trace_method_handle(_masm, entry_name(ek)); |
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1178 |
3753
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1179 BLOCK_COMMENT(err_msg("Entry %s {", entry_name(ek))); |
710 | 1180 |
1181 switch ((int) ek) { | |
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1182 case _raise_exception: |
710 | 1183 { |
2088
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1184 // Not a real MH entry, but rather shared code for raising an |
2321
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1185 // exception. Since we use the compiled entry, arguments are |
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|
1186 // expected in compiler argument registers. |
2116
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1187 assert(raise_exception_method(), "must be set"); |
2321
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|
1188 assert(raise_exception_method()->from_compiled_entry(), "method must be linked"); |
710 | 1189 |
3808
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1190 const Register rax_pc = rax; |
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1191 __ pop(rax_pc); // caller PC |
2088
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1192 __ mov(rsp, saved_last_sp); // cut the stack back to where the caller started |
710 | 1193 |
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1194 Register rbx_method = rbx_temp; |
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1195 __ movptr(rbx_method, ExternalAddress((address) &_raise_exception_method)); |
2088
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1196 |
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1197 const int jobject_oop_offset = 0; |
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1198 __ movptr(rbx_method, Address(rbx_method, jobject_oop_offset)); // dereference the jobject |
3808
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1199 |
3848 | 1200 __ movptr(saved_last_sp, rsp); |
3808
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1201 __ subptr(rsp, 3 * wordSize); |
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1202 __ push(rax_pc); // restore caller PC |
2088
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1203 |
3848 | 1204 __ movl (__ argument_address(constant(2)), rarg0_code); |
3808
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1205 __ movptr(__ argument_address(constant(1)), rarg1_actual); |
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1206 __ movptr(__ argument_address(constant(0)), rarg2_required); |
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1207 jump_from_method_handle(_masm, rbx_method, rax); |
710 | 1208 } |
1209 break; | |
1210 | |
1211 case _invokestatic_mh: | |
1212 case _invokespecial_mh: | |
1213 { | |
1214 Register rbx_method = rbx_temp; | |
1846 | 1215 __ load_heap_oop(rbx_method, rcx_mh_vmtarget); // target is a methodOop |
710 | 1216 __ verify_oop(rbx_method); |
1217 // same as TemplateTable::invokestatic or invokespecial, | |
1218 // minus the CP setup and profiling: | |
1219 if (ek == _invokespecial_mh) { | |
1220 // Must load & check the first argument before entering the target method. | |
1221 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
1222 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
1223 __ null_check(rcx_recv); | |
1224 __ verify_oop(rcx_recv); | |
1225 } | |
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1226 jump_from_method_handle(_masm, rbx_method, rax); |
710 | 1227 } |
1228 break; | |
1229 | |
1230 case _invokevirtual_mh: | |
1231 { | |
1232 // same as TemplateTable::invokevirtual, | |
1233 // minus the CP setup and profiling: | |
1234 | |
1235 // pick out the vtable index and receiver offset from the MH, | |
1236 // and then we can discard it: | |
1237 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
1238 Register rbx_index = rbx_temp; | |
1239 __ movl(rbx_index, rcx_dmh_vmindex); | |
1240 // Note: The verifier allows us to ignore rcx_mh_vmtarget. | |
1241 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
1242 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes()); | |
1243 | |
1244 // get receiver klass | |
1245 Register rax_klass = rax_argslot; | |
1246 __ load_klass(rax_klass, rcx_recv); | |
1247 __ verify_oop(rax_klass); | |
1248 | |
1249 // get target methodOop & entry point | |
1250 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
1251 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below"); | |
1252 Address vtable_entry_addr(rax_klass, | |
1253 rbx_index, Address::times_ptr, | |
1254 base + vtableEntry::method_offset_in_bytes()); | |
1255 Register rbx_method = rbx_temp; | |
1108 | 1256 __ movptr(rbx_method, vtable_entry_addr); |
710 | 1257 |
1258 __ verify_oop(rbx_method); | |
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1259 jump_from_method_handle(_masm, rbx_method, rax); |
710 | 1260 } |
1261 break; | |
1262 | |
1263 case _invokeinterface_mh: | |
1264 { | |
1265 // same as TemplateTable::invokeinterface, | |
1266 // minus the CP setup and profiling: | |
1267 | |
1268 // pick out the interface and itable index from the MH. | |
1269 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
1270 Register rdx_intf = rdx_temp; | |
1271 Register rbx_index = rbx_temp; | |
1846 | 1272 __ load_heap_oop(rdx_intf, rcx_mh_vmtarget); |
1273 __ movl(rbx_index, rcx_dmh_vmindex); | |
710 | 1274 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); |
1275 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes()); | |
1276 | |
1277 // get receiver klass | |
1278 Register rax_klass = rax_argslot; | |
1279 __ load_klass(rax_klass, rcx_recv); | |
1280 __ verify_oop(rax_klass); | |
1281 | |
1282 Register rbx_method = rbx_index; | |
1283 | |
1284 // get interface klass | |
1285 Label no_such_interface; | |
1286 __ verify_oop(rdx_intf); | |
1287 __ lookup_interface_method(rax_klass, rdx_intf, | |
1288 // note: next two args must be the same: | |
1289 rbx_index, rbx_method, | |
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1290 rdi_temp, |
710 | 1291 no_such_interface); |
1292 | |
1293 __ verify_oop(rbx_method); | |
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1294 jump_from_method_handle(_masm, rbx_method, rax); |
710 | 1295 __ hlt(); |
1296 | |
1297 __ bind(no_such_interface); | |
1298 // Throw an exception. | |
1299 // For historical reasons, it will be IncompatibleClassChangeError. | |
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1300 __ mov(rbx_temp, rcx_recv); // rarg2_required might be RCX |
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1301 assert_different_registers(rarg2_required, rbx_temp); |
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1302 __ movptr(rarg2_required, Address(rdx_intf, java_mirror_offset)); // required interface |
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1303 __ mov( rarg1_actual, rbx_temp); // bad receiver |
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1304 __ movl( rarg0_code, (int) Bytecodes::_invokeinterface); // who is complaining? |
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1305 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 1306 } |
1307 break; | |
1308 | |
1309 case _bound_ref_mh: | |
1310 case _bound_int_mh: | |
1311 case _bound_long_mh: | |
1312 case _bound_ref_direct_mh: | |
1313 case _bound_int_direct_mh: | |
1314 case _bound_long_direct_mh: | |
1315 { | |
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1316 const bool direct_to_method = (ek >= _bound_ref_direct_mh); |
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1317 BasicType arg_type = ek_bound_mh_arg_type(ek); |
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1318 int arg_slots = type2size[arg_type]; |
710 | 1319 |
1320 // make room for the new argument: | |
1321 __ movl(rax_argslot, rcx_bmh_vmargslot); | |
1322 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
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1323 |
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1324 insert_arg_slots(_masm, arg_slots * stack_move_unit(), rax_argslot, rbx_temp, rdx_temp); |
710 | 1325 |
1326 // store bound argument into the new stack slot: | |
1846 | 1327 __ load_heap_oop(rbx_temp, rcx_bmh_argument); |
710 | 1328 if (arg_type == T_OBJECT) { |
1329 __ movptr(Address(rax_argslot, 0), rbx_temp); | |
1330 } else { | |
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1331 Address prim_value_addr(rbx_temp, java_lang_boxing_object::value_offset_in_bytes(arg_type)); |
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1332 move_typed_arg(_masm, arg_type, false, |
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1333 Address(rax_argslot, 0), |
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1334 prim_value_addr, |
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1335 rbx_temp, rdx_temp); |
710 | 1336 } |
1337 | |
1338 if (direct_to_method) { | |
1339 Register rbx_method = rbx_temp; | |
1846 | 1340 __ load_heap_oop(rbx_method, rcx_mh_vmtarget); |
710 | 1341 __ verify_oop(rbx_method); |
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1342 jump_from_method_handle(_masm, rbx_method, rax); |
710 | 1343 } else { |
1846 | 1344 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1345 __ verify_oop(rcx_recv); |
1346 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
1347 } | |
1348 } | |
1349 break; | |
1350 | |
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1351 case _adapter_opt_profiling: |
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1352 if (java_lang_invoke_CountingMethodHandle::vmcount_offset_in_bytes() != 0) { |
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1353 Address rcx_mh_vmcount(rcx_recv, java_lang_invoke_CountingMethodHandle::vmcount_offset_in_bytes()); |
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1354 __ incrementl(rcx_mh_vmcount); |
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1355 } |
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1356 // fall through |
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1357 |
710 | 1358 case _adapter_retype_only: |
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1359 case _adapter_retype_raw: |
710 | 1360 // immediately jump to the next MH layer: |
1846 | 1361 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1362 __ verify_oop(rcx_recv); |
1363 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
1364 // This is OK when all parameter types widen. | |
1365 // It is also OK when a return type narrows. | |
1366 break; | |
1367 | |
1368 case _adapter_check_cast: | |
1369 { | |
1370 // temps: | |
1371 Register rbx_klass = rbx_temp; // interesting AMH data | |
1372 | |
1373 // check a reference argument before jumping to the next layer of MH: | |
1374 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1375 vmarg = __ argument_address(rax_argslot); | |
1376 | |
1377 // What class are we casting to? | |
1846 | 1378 __ load_heap_oop(rbx_klass, rcx_amh_argument); // this is a Class object! |
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1379 load_klass_from_Class(_masm, rbx_klass); |
710 | 1380 |
1381 Label done; | |
1382 __ movptr(rdx_temp, vmarg); | |
1277 | 1383 __ testptr(rdx_temp, rdx_temp); |
1846 | 1384 __ jcc(Assembler::zero, done); // no cast if null |
710 | 1385 __ load_klass(rdx_temp, rdx_temp); |
1386 | |
1387 // live at this point: | |
1388 // - rbx_klass: klass required by the target method | |
1389 // - rdx_temp: argument klass to test | |
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1390 // - rcx_recv: adapter method handle |
710 | 1391 __ check_klass_subtype(rdx_temp, rbx_klass, rax_argslot, done); |
1392 | |
1393 // If we get here, the type check failed! | |
1394 // Call the wrong_method_type stub, passing the failing argument type in rax. | |
1395 Register rax_mtype = rax_argslot; | |
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1396 __ movl(rax_argslot, rcx_amh_vmargslot); // reload argslot field |
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1397 __ movptr(rdx_temp, vmarg); |
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1398 |
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1399 assert_different_registers(rarg2_required, rdx_temp); |
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1400 __ load_heap_oop(rarg2_required, rcx_amh_argument); // required class |
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1401 __ mov( rarg1_actual, rdx_temp); // bad object |
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1402 __ movl( rarg0_code, (int) Bytecodes::_checkcast); // who is complaining? |
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1403 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 1404 |
1405 __ bind(done); | |
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1406 // get the new MH: |
1846 | 1407 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1408 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
1409 } | |
1410 break; | |
1411 | |
1412 case _adapter_prim_to_prim: | |
1413 case _adapter_ref_to_prim: | |
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1414 case _adapter_prim_to_ref: |
710 | 1415 // handled completely by optimized cases |
1416 __ stop("init_AdapterMethodHandle should not issue this"); | |
1417 break; | |
1418 | |
1419 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim | |
1420 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim | |
1421 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim | |
1422 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim | |
1423 { | |
1424 // perform an in-place conversion to int or an int subword | |
1425 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1426 vmarg = __ argument_address(rax_argslot); | |
1427 | |
1428 switch (ek) { | |
1429 case _adapter_opt_i2i: | |
1430 __ movl(rdx_temp, vmarg); | |
1431 break; | |
1432 case _adapter_opt_l2i: | |
1433 { | |
1434 // just delete the extra slot; on a little-endian machine we keep the first | |
1435 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
1436 remove_arg_slots(_masm, -stack_move_unit(), | |
1437 rax_argslot, rbx_temp, rdx_temp); | |
1506 | 1438 vmarg = Address(rax_argslot, -Interpreter::stackElementSize); |
710 | 1439 __ movl(rdx_temp, vmarg); |
1440 } | |
1441 break; | |
1442 case _adapter_opt_unboxi: | |
1443 { | |
1444 // Load the value up from the heap. | |
1445 __ movptr(rdx_temp, vmarg); | |
1446 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT); | |
1447 #ifdef ASSERT | |
1448 for (int bt = T_BOOLEAN; bt < T_INT; bt++) { | |
1449 if (is_subword_type(BasicType(bt))) | |
1450 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), ""); | |
1451 } | |
1452 #endif | |
1453 __ null_check(rdx_temp, value_offset); | |
1454 __ movl(rdx_temp, Address(rdx_temp, value_offset)); | |
1455 // We load this as a word. Because we are little-endian, | |
1456 // the low bits will be correct, but the high bits may need cleaning. | |
1457 // The vminfo will guide us to clean those bits. | |
1458 } | |
1459 break; | |
1460 default: | |
1304 | 1461 ShouldNotReachHere(); |
710 | 1462 } |
1463 | |
1304 | 1464 // Do the requested conversion and store the value. |
710 | 1465 Register rbx_vminfo = rbx_temp; |
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1466 load_conversion_vminfo(_masm, rbx_vminfo, rcx_amh_conversion); |
710 | 1467 |
1468 // get the new MH: | |
1846 | 1469 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1470 // (now we are done with the old MH) |
1471 | |
1472 // original 32-bit vmdata word must be of this form: | |
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1473 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 | |
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1474 __ xchgptr(rcx, rbx_vminfo); // free rcx for shifts |
710 | 1475 __ shll(rdx_temp /*, rcx*/); |
1476 Label zero_extend, done; | |
1477 __ testl(rcx, CONV_VMINFO_SIGN_FLAG); | |
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1478 __ jccb(Assembler::zero, zero_extend); |
710 | 1479 |
1480 // this path is taken for int->byte, int->short | |
1481 __ sarl(rdx_temp /*, rcx*/); | |
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1482 __ jmpb(done); |
710 | 1483 |
1484 __ bind(zero_extend); | |
1485 // this is taken for int->char | |
1486 __ shrl(rdx_temp /*, rcx*/); | |
1487 | |
1488 __ bind(done); | |
1304 | 1489 __ movl(vmarg, rdx_temp); // Store the value. |
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1490 __ xchgptr(rcx, rbx_vminfo); // restore rcx_recv |
710 | 1491 |
1492 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
1493 } | |
1494 break; | |
1495 | |
1496 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim | |
1497 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim | |
1498 { | |
1499 // perform an in-place int-to-long or ref-to-long conversion | |
1500 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1501 | |
1502 // on a little-endian machine we keep the first slot and add another after | |
1503 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
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1504 insert_arg_slots(_masm, stack_move_unit(), |
710 | 1505 rax_argslot, rbx_temp, rdx_temp); |
1506 | 1506 Address vmarg1(rax_argslot, -Interpreter::stackElementSize); |
1507 Address vmarg2 = vmarg1.plus_disp(Interpreter::stackElementSize); | |
710 | 1508 |
1509 switch (ek) { | |
1510 case _adapter_opt_i2l: | |
1511 { | |
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1512 #ifdef _LP64 |
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1513 __ movslq(rdx_temp, vmarg1); // Load sign-extended |
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1514 __ movq(vmarg1, rdx_temp); // Store into first slot |
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1515 #else |
710 | 1516 __ movl(rdx_temp, vmarg1); |
1293
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1517 __ sarl(rdx_temp, BitsPerInt - 1); // __ extend_sign() |
710 | 1518 __ movl(vmarg2, rdx_temp); // store second word |
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1519 #endif |
710 | 1520 } |
1521 break; | |
1522 case _adapter_opt_unboxl: | |
1523 { | |
1524 // Load the value up from the heap. | |
1525 __ movptr(rdx_temp, vmarg1); | |
1526 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG); | |
1527 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), ""); | |
1528 __ null_check(rdx_temp, value_offset); | |
1293
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1529 #ifdef _LP64 |
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1530 __ movq(rbx_temp, Address(rdx_temp, value_offset)); |
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1531 __ movq(vmarg1, rbx_temp); |
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1532 #else |
710 | 1533 __ movl(rbx_temp, Address(rdx_temp, value_offset + 0*BytesPerInt)); |
1534 __ movl(rdx_temp, Address(rdx_temp, value_offset + 1*BytesPerInt)); | |
1535 __ movl(vmarg1, rbx_temp); | |
1536 __ movl(vmarg2, rdx_temp); | |
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1537 #endif |
710 | 1538 } |
1539 break; | |
1540 default: | |
1304 | 1541 ShouldNotReachHere(); |
710 | 1542 } |
1543 | |
1846 | 1544 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1545 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
1546 } | |
1547 break; | |
1548 | |
1549 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim | |
1550 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim | |
1551 { | |
1552 // perform an in-place floating primitive conversion | |
1553 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1554 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
1555 if (ek == _adapter_opt_f2d) { | |
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1556 insert_arg_slots(_masm, stack_move_unit(), |
710 | 1557 rax_argslot, rbx_temp, rdx_temp); |
1558 } | |
1506 | 1559 Address vmarg(rax_argslot, -Interpreter::stackElementSize); |
710 | 1560 |
1561 #ifdef _LP64 | |
1562 if (ek == _adapter_opt_f2d) { | |
1563 __ movflt(xmm0, vmarg); | |
1564 __ cvtss2sd(xmm0, xmm0); | |
1565 __ movdbl(vmarg, xmm0); | |
1566 } else { | |
1567 __ movdbl(xmm0, vmarg); | |
1568 __ cvtsd2ss(xmm0, xmm0); | |
1569 __ movflt(vmarg, xmm0); | |
1570 } | |
1571 #else //_LP64 | |
1572 if (ek == _adapter_opt_f2d) { | |
1573 __ fld_s(vmarg); // load float to ST0 | |
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1574 __ fstp_d(vmarg); // store double |
1304 | 1575 } else { |
710 | 1576 __ fld_d(vmarg); // load double to ST0 |
1577 __ fstp_s(vmarg); // store single | |
1578 } | |
1579 #endif //_LP64 | |
1580 | |
1581 if (ek == _adapter_opt_d2f) { | |
1582 remove_arg_slots(_masm, -stack_move_unit(), | |
1583 rax_argslot, rbx_temp, rdx_temp); | |
1584 } | |
1585 | |
1846 | 1586 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1587 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
1588 } | |
1589 break; | |
1590 | |
1591 case _adapter_swap_args: | |
1592 case _adapter_rot_args: | |
1593 // handled completely by optimized cases | |
1594 __ stop("init_AdapterMethodHandle should not issue this"); | |
1595 break; | |
1596 | |
1597 case _adapter_opt_swap_1: | |
1598 case _adapter_opt_swap_2: | |
1599 case _adapter_opt_rot_1_up: | |
1600 case _adapter_opt_rot_1_down: | |
1601 case _adapter_opt_rot_2_up: | |
1602 case _adapter_opt_rot_2_down: | |
1603 { | |
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1604 int swap_slots = ek_adapter_opt_swap_slots(ek); |
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1605 int rotate = ek_adapter_opt_swap_mode(ek); |
710 | 1606 |
1607 // 'argslot' is the position of the first argument to swap | |
1608 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1609 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
1610 | |
1611 // 'vminfo' is the second | |
1612 Register rbx_destslot = rbx_temp; | |
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1613 load_conversion_vminfo(_masm, rbx_destslot, rcx_amh_conversion); |
710 | 1614 __ lea(rbx_destslot, __ argument_address(rbx_destslot)); |
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1615 if (VerifyMethodHandles) |
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1616 verify_argslot(_masm, rbx_destslot, "swap point must fall within current frame"); |
710 | 1617 |
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1618 assert(Interpreter::stackElementSize == wordSize, "else rethink use of wordSize here"); |
710 | 1619 if (!rotate) { |
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1620 // simple swap |
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1621 for (int i = 0; i < swap_slots; i++) { |
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1622 __ movptr(rdi_temp, Address(rax_argslot, i * wordSize)); |
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1623 __ movptr(rdx_temp, Address(rbx_destslot, i * wordSize)); |
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1624 __ movptr(Address(rax_argslot, i * wordSize), rdx_temp); |
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1625 __ movptr(Address(rbx_destslot, i * wordSize), rdi_temp); |
710 | 1626 } |
1627 } else { | |
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1628 // A rotate is actually pair of moves, with an "odd slot" (or pair) |
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1629 // changing place with a series of other slots. |
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1630 // First, push the "odd slot", which is going to get overwritten |
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1631 for (int i = swap_slots - 1; i >= 0; i--) { |
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1632 // handle one with rdi_temp instead of a push: |
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1633 if (i == 0) __ movptr(rdi_temp, Address(rax_argslot, i * wordSize)); |
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1634 else __ pushptr( Address(rax_argslot, i * wordSize)); |
710 | 1635 } |
1636 if (rotate > 0) { | |
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1637 // Here is rotate > 0: |
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1638 // (low mem) (high mem) |
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1639 // | dest: more_slots... | arg: odd_slot :arg+1 | |
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1640 // => |
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1641 // | dest: odd_slot | dest+1: more_slots... :arg+1 | |
710 | 1642 // work argslot down to destslot, copying contiguous data upwards |
1643 // pseudo-code: | |
1644 // rax = src_addr - swap_bytes | |
1645 // rbx = dest_addr | |
1646 // while (rax >= rbx) *(rax + swap_bytes) = *(rax + 0), rax--; | |
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1647 move_arg_slots_up(_masm, |
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1648 rbx_destslot, |
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1649 Address(rax_argslot, 0), |
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1650 swap_slots, |
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1651 rax_argslot, rdx_temp); |
710 | 1652 } else { |
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1653 // Here is the other direction, rotate < 0: |
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1654 // (low mem) (high mem) |
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1655 // | arg: odd_slot | arg+1: more_slots... :dest+1 | |
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1656 // => |
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1657 // | arg: more_slots... | dest: odd_slot :dest+1 | |
710 | 1658 // work argslot up to destslot, copying contiguous data downwards |
1659 // pseudo-code: | |
1660 // rax = src_addr + swap_bytes | |
1661 // rbx = dest_addr | |
1662 // while (rax <= rbx) *(rax - swap_bytes) = *(rax + 0), rax++; | |
3757
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1663 // dest_slot denotes an exclusive upper limit |
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1664 int limit_bias = OP_ROT_ARGS_DOWN_LIMIT_BIAS; |
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1665 if (limit_bias != 0) |
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1666 __ addptr(rbx_destslot, - limit_bias * wordSize); |
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1667 move_arg_slots_down(_masm, |
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1668 Address(rax_argslot, swap_slots * wordSize), |
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1669 rbx_destslot, |
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1670 -swap_slots, |
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1671 rax_argslot, rdx_temp); |
3757
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1672 __ subptr(rbx_destslot, swap_slots * wordSize); |
710 | 1673 } |
1674 // pop the original first chunk into the destination slot, now free | |
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1675 for (int i = 0; i < swap_slots; i++) { |
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1676 if (i == 0) __ movptr(Address(rbx_destslot, i * wordSize), rdi_temp); |
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1677 else __ popptr(Address(rbx_destslot, i * wordSize)); |
710 | 1678 } |
1679 } | |
1680 | |
1846 | 1681 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1682 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
1683 } | |
1684 break; | |
1685 | |
1686 case _adapter_dup_args: | |
1687 { | |
1688 // 'argslot' is the position of the first argument to duplicate | |
1689 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1690 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
1691 | |
1692 // 'stack_move' is negative number of words to duplicate | |
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1693 Register rdi_stack_move = rdi_temp; |
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1694 load_stack_move(_masm, rdi_stack_move, rcx_recv, true); |
710 | 1695 |
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1696 if (VerifyMethodHandles) { |
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1697 verify_argslots(_masm, rdi_stack_move, rax_argslot, true, |
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1698 "copied argument(s) must fall within current frame"); |
710 | 1699 } |
1700 | |
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1701 // insert location is always the bottom of the argument list: |
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1702 Address insert_location = __ argument_address(constant(0)); |
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1703 int pre_arg_words = insert_location.disp() / wordSize; // return PC is pushed |
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1704 assert(insert_location.base() == rsp, ""); |
710 | 1705 |
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1706 __ negl(rdi_stack_move); |
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1707 push_arg_slots(_masm, rax_argslot, rdi_stack_move, |
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1708 pre_arg_words, rbx_temp, rdx_temp); |
710 | 1709 |
1846 | 1710 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1711 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
1712 } | |
1713 break; | |
1714 | |
1715 case _adapter_drop_args: | |
1716 { | |
1717 // 'argslot' is the position of the first argument to nuke | |
1718 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1719 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
1720 | |
1721 // (must do previous push after argslot address is taken) | |
1722 | |
1723 // 'stack_move' is number of words to drop | |
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1724 Register rdi_stack_move = rdi_temp; |
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1725 load_stack_move(_masm, rdi_stack_move, rcx_recv, false); |
710 | 1726 remove_arg_slots(_masm, rdi_stack_move, |
1727 rax_argslot, rbx_temp, rdx_temp); | |
1728 | |
1846 | 1729 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1730 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
1731 } | |
1732 break; | |
1733 | |
1734 case _adapter_collect_args: | |
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1735 case _adapter_fold_args: |
710 | 1736 case _adapter_spread_args: |
1737 // handled completely by optimized cases | |
1738 __ stop("init_AdapterMethodHandle should not issue this"); | |
1739 break; | |
1740 | |
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1741 case _adapter_opt_collect_ref: |
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1742 case _adapter_opt_collect_int: |
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1743 case _adapter_opt_collect_long: |
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1744 case _adapter_opt_collect_float: |
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1745 case _adapter_opt_collect_double: |
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1746 case _adapter_opt_collect_void: |
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1747 case _adapter_opt_collect_0_ref: |
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1748 case _adapter_opt_collect_1_ref: |
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1749 case _adapter_opt_collect_2_ref: |
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1750 case _adapter_opt_collect_3_ref: |
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1751 case _adapter_opt_collect_4_ref: |
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1752 case _adapter_opt_collect_5_ref: |
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1753 case _adapter_opt_filter_S0_ref: |
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1754 case _adapter_opt_filter_S1_ref: |
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1755 case _adapter_opt_filter_S2_ref: |
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1756 case _adapter_opt_filter_S3_ref: |
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1757 case _adapter_opt_filter_S4_ref: |
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1758 case _adapter_opt_filter_S5_ref: |
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|
1759 case _adapter_opt_collect_2_S0_ref: |
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|
1760 case _adapter_opt_collect_2_S1_ref: |
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|
1761 case _adapter_opt_collect_2_S2_ref: |
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|
1762 case _adapter_opt_collect_2_S3_ref: |
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|
1763 case _adapter_opt_collect_2_S4_ref: |
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|
1764 case _adapter_opt_collect_2_S5_ref: |
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diff
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|
1765 case _adapter_opt_fold_ref: |
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|
1766 case _adapter_opt_fold_int: |
167b70ff3abc
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|
1767 case _adapter_opt_fold_long: |
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|
1768 case _adapter_opt_fold_float: |
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|
1769 case _adapter_opt_fold_double: |
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|
1770 case _adapter_opt_fold_void: |
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|
1771 case _adapter_opt_fold_1_ref: |
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|
1772 case _adapter_opt_fold_2_ref: |
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|
1773 case _adapter_opt_fold_3_ref: |
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|
1774 case _adapter_opt_fold_4_ref: |
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|
1775 case _adapter_opt_fold_5_ref: |
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diff
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|
1776 { |
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|
1777 // Given a fresh incoming stack frame, build a new ricochet frame. |
167b70ff3abc
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|
1778 // On entry, TOS points at a return PC, and RBP is the callers frame ptr. |
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|
1779 // RSI/R13 has the caller's exact stack pointer, which we must also preserve. |
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|
1780 // RCX contains an AdapterMethodHandle of the indicated kind. |
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diff
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|
1781 |
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|
1782 // Relevant AMH fields: |
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|
1783 // amh.vmargslot: |
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|
1784 // points to the trailing edge of the arguments |
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|
1785 // to filter, collect, or fold. For a boxing operation, |
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|
1786 // it points just after the single primitive value. |
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|
1787 // amh.argument: |
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|
1788 // recursively called MH, on |collect| arguments |
167b70ff3abc
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diff
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|
1789 // amh.vmtarget: |
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|
1790 // final destination MH, on return value, etc. |
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diff
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|
1791 // amh.conversion.dest: |
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|
1792 // tells what is the type of the return value |
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|
1793 // (not needed here, since dest is also derived from ek) |
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diff
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|
1794 // amh.conversion.vminfo: |
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diff
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|
1795 // points to the trailing edge of the return value |
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|
1796 // when the vmtarget is to be called; this is |
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|
1797 // equal to vmargslot + (retained ? |collect| : 0) |
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|
1798 |
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|
1799 // Pass 0 or more argument slots to the recursive target. |
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|
1800 int collect_count_constant = ek_adapter_opt_collect_count(ek); |
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|
1801 |
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|
1802 // The collected arguments are copied from the saved argument list: |
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|
1803 int collect_slot_constant = ek_adapter_opt_collect_slot(ek); |
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|
1804 |
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|
1805 assert(ek_orig == _adapter_collect_args || |
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|
1806 ek_orig == _adapter_fold_args, ""); |
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|
1807 bool retain_original_args = (ek_orig == _adapter_fold_args); |
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|
1808 |
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1809 // The return value is replaced (or inserted) at the 'vminfo' argslot. |
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|
1810 // Sometimes we can compute this statically. |
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|
1811 int dest_slot_constant = -1; |
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|
1812 if (!retain_original_args) |
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|
1813 dest_slot_constant = collect_slot_constant; |
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|
1814 else if (collect_slot_constant >= 0 && collect_count_constant >= 0) |
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|
1815 // We are preserving all the arguments, and the return value is prepended, |
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|
1816 // so the return slot is to the left (above) the |collect| sequence. |
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|
1817 dest_slot_constant = collect_slot_constant + collect_count_constant; |
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|
1818 |
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|
1819 // Replace all those slots by the result of the recursive call. |
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|
1820 // The result type can be one of ref, int, long, float, double, void. |
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|
1821 // In the case of void, nothing is pushed on the stack after return. |
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|
1822 BasicType dest = ek_adapter_opt_collect_type(ek); |
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|
1823 assert(dest == type2wfield[dest], "dest is a stack slot type"); |
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1824 int dest_count = type2size[dest]; |
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1825 assert(dest_count == 1 || dest_count == 2 || (dest_count == 0 && dest == T_VOID), "dest has a size"); |
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1826 |
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|
1827 // Choose a return continuation. |
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|
1828 EntryKind ek_ret = _adapter_opt_return_any; |
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|
1829 if (dest != T_CONFLICT && OptimizeMethodHandles) { |
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|
1830 switch (dest) { |
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|
1831 case T_INT : ek_ret = _adapter_opt_return_int; break; |
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1832 case T_LONG : ek_ret = _adapter_opt_return_long; break; |
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1833 case T_FLOAT : ek_ret = _adapter_opt_return_float; break; |
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1834 case T_DOUBLE : ek_ret = _adapter_opt_return_double; break; |
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|
1835 case T_OBJECT : ek_ret = _adapter_opt_return_ref; break; |
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|
1836 case T_VOID : ek_ret = _adapter_opt_return_void; break; |
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|
1837 default : ShouldNotReachHere(); |
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|
1838 } |
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|
1839 if (dest == T_OBJECT && dest_slot_constant >= 0) { |
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|
1840 EntryKind ek_try = EntryKind(_adapter_opt_return_S0_ref + dest_slot_constant); |
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|
1841 if (ek_try <= _adapter_opt_return_LAST && |
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1842 ek_adapter_opt_return_slot(ek_try) == dest_slot_constant) { |
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|
1843 ek_ret = ek_try; |
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|
1844 } |
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|
1845 } |
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1846 assert(ek_adapter_opt_return_type(ek_ret) == dest, ""); |
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|
1847 } |
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|
1848 |
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|
1849 // Already pushed: ... keep1 | collect | keep2 | sender_pc | |
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|
1850 // push(sender_pc); |
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|
1851 |
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|
1852 // Compute argument base: |
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|
1853 Register rax_argv = rax_argslot; |
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|
1854 __ lea(rax_argv, __ argument_address(constant(0))); |
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|
1855 |
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|
1856 // Push a few extra argument words, if we need them to store the return value. |
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|
1857 { |
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|
1858 int extra_slots = 0; |
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|
1859 if (retain_original_args) { |
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|
1860 extra_slots = dest_count; |
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|
1861 } else if (collect_count_constant == -1) { |
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|
1862 extra_slots = dest_count; // collect_count might be zero; be generous |
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|
1863 } else if (dest_count > collect_count_constant) { |
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|
1864 extra_slots = (dest_count - collect_count_constant); |
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|
1865 } else { |
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|
1866 // else we know we have enough dead space in |collect| to repurpose for return values |
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|
1867 } |
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|
1868 DEBUG_ONLY(extra_slots += 1); |
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|
1869 if (extra_slots > 0) { |
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|
1870 __ pop(rbx_temp); // return value |
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|
1871 __ subptr(rsp, (extra_slots * Interpreter::stackElementSize)); |
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|
1872 // Push guard word #2 in debug mode. |
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|
1873 DEBUG_ONLY(__ movptr(Address(rsp, 0), (int32_t) RicochetFrame::MAGIC_NUMBER_2)); |
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|
1874 __ push(rbx_temp); |
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|
1875 } |
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|
1876 } |
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|
1877 |
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|
1878 RicochetFrame::enter_ricochet_frame(_masm, rcx_recv, rax_argv, |
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|
1879 entry(ek_ret)->from_interpreted_entry(), rbx_temp); |
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|
1880 |
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|
1881 // Now pushed: ... keep1 | collect | keep2 | RF | |
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|
1882 // some handy frame slots: |
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|
1883 Address exact_sender_sp_addr = RicochetFrame::frame_address(RicochetFrame::exact_sender_sp_offset_in_bytes()); |
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1884 Address conversion_addr = RicochetFrame::frame_address(RicochetFrame::conversion_offset_in_bytes()); |
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|
1885 Address saved_args_base_addr = RicochetFrame::frame_address(RicochetFrame::saved_args_base_offset_in_bytes()); |
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|
1886 |
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|
1887 #ifdef ASSERT |
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1888 if (VerifyMethodHandles && dest != T_CONFLICT) { |
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|
1889 BLOCK_COMMENT("verify AMH.conv.dest"); |
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|
1890 load_conversion_dest_type(_masm, rbx_temp, conversion_addr); |
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|
1891 Label L_dest_ok; |
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1892 __ cmpl(rbx_temp, (int) dest); |
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|
1893 __ jcc(Assembler::equal, L_dest_ok); |
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|
1894 if (dest == T_INT) { |
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1895 for (int bt = T_BOOLEAN; bt < T_INT; bt++) { |
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1896 if (is_subword_type(BasicType(bt))) { |
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1897 __ cmpl(rbx_temp, (int) bt); |
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1898 __ jcc(Assembler::equal, L_dest_ok); |
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1899 } |
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1900 } |
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1901 } |
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1902 __ stop("bad dest in AMH.conv"); |
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1903 __ BIND(L_dest_ok); |
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1904 } |
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1905 #endif //ASSERT |
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1906 |
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1907 // Find out where the original copy of the recursive argument sequence begins. |
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1908 Register rax_coll = rax_argv; |
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1909 { |
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1910 RegisterOrConstant collect_slot = collect_slot_constant; |
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1911 if (collect_slot_constant == -1) { |
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1912 __ movl(rdi_temp, rcx_amh_vmargslot); |
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1913 collect_slot = rdi_temp; |
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1914 } |
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1915 if (collect_slot_constant != 0) |
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1916 __ lea(rax_coll, Address(rax_argv, collect_slot, Interpreter::stackElementScale())); |
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1917 // rax_coll now points at the trailing edge of |collect| and leading edge of |keep2| |
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1918 } |
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1919 |
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1920 // Replace the old AMH with the recursive MH. (No going back now.) |
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1921 // In the case of a boxing call, the recursive call is to a 'boxer' method, |
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1922 // such as Integer.valueOf or Long.valueOf. In the case of a filter |
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1923 // or collect call, it will take one or more arguments, transform them, |
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1924 // and return some result, to store back into argument_base[vminfo]. |
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1925 __ load_heap_oop(rcx_recv, rcx_amh_argument); |
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1926 if (VerifyMethodHandles) verify_method_handle(_masm, rcx_recv); |
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1927 |
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1928 // Push a space for the recursively called MH first: |
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1929 __ push((int32_t)NULL_WORD); |
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1930 |
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1931 // Calculate |collect|, the number of arguments we are collecting. |
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1932 Register rdi_collect_count = rdi_temp; |
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1933 RegisterOrConstant collect_count; |
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1934 if (collect_count_constant >= 0) { |
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1935 collect_count = collect_count_constant; |
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1936 } else { |
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1937 __ load_method_handle_vmslots(rdi_collect_count, rcx_recv, rdx_temp); |
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1938 collect_count = rdi_collect_count; |
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1939 } |
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1940 #ifdef ASSERT |
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1941 if (VerifyMethodHandles && collect_count_constant >= 0) { |
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1942 __ load_method_handle_vmslots(rbx_temp, rcx_recv, rdx_temp); |
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1943 Label L_count_ok; |
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1944 __ cmpl(rbx_temp, collect_count_constant); |
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1945 __ jcc(Assembler::equal, L_count_ok); |
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1946 __ stop("bad vminfo in AMH.conv"); |
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1947 __ BIND(L_count_ok); |
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1948 } |
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1949 #endif //ASSERT |
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1950 |
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1951 // copy |collect| slots directly to TOS: |
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1952 push_arg_slots(_masm, rax_coll, collect_count, 0, rbx_temp, rdx_temp); |
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1953 // Now pushed: ... keep1 | collect | keep2 | RF... | collect | |
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1954 // rax_coll still points at the trailing edge of |collect| and leading edge of |keep2| |
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1955 |
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1956 // If necessary, adjust the saved arguments to make room for the eventual return value. |
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1957 // Normal adjustment: ... keep1 | +dest+ | -collect- | keep2 | RF... | collect | |
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1958 // If retaining args: ... keep1 | +dest+ | collect | keep2 | RF... | collect | |
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1959 // In the non-retaining case, this might move keep2 either up or down. |
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1960 // We don't have to copy the whole | RF... collect | complex, |
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1961 // but we must adjust RF.saved_args_base. |
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1962 // Also, from now on, we will forget about the original copy of |collect|. |
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1963 // If we are retaining it, we will treat it as part of |keep2|. |
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1964 // For clarity we will define |keep3| = |collect|keep2| or |keep2|. |
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1965 |
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1966 BLOCK_COMMENT("adjust trailing arguments {"); |
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1967 // Compare the sizes of |+dest+| and |-collect-|, which are opposed opening and closing movements. |
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1968 int open_count = dest_count; |
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1969 RegisterOrConstant close_count = collect_count_constant; |
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1970 Register rdi_close_count = rdi_collect_count; |
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1971 if (retain_original_args) { |
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1972 close_count = constant(0); |
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1973 } else if (collect_count_constant == -1) { |
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1974 close_count = rdi_collect_count; |
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1975 } |
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1976 |
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1977 // How many slots need moving? This is simply dest_slot (0 => no |keep3|). |
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1978 RegisterOrConstant keep3_count; |
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1979 Register rsi_keep3_count = rsi; // can repair from RF.exact_sender_sp |
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1980 if (dest_slot_constant >= 0) { |
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1981 keep3_count = dest_slot_constant; |
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1982 } else { |
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1983 load_conversion_vminfo(_masm, rsi_keep3_count, conversion_addr); |
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1984 keep3_count = rsi_keep3_count; |
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1985 } |
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1986 #ifdef ASSERT |
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1987 if (VerifyMethodHandles && dest_slot_constant >= 0) { |
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1988 load_conversion_vminfo(_masm, rbx_temp, conversion_addr); |
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1989 Label L_vminfo_ok; |
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1990 __ cmpl(rbx_temp, dest_slot_constant); |
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1991 __ jcc(Assembler::equal, L_vminfo_ok); |
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1992 __ stop("bad vminfo in AMH.conv"); |
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1993 __ BIND(L_vminfo_ok); |
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1994 } |
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1995 #endif //ASSERT |
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1996 |
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1997 // tasks remaining: |
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1998 bool move_keep3 = (!keep3_count.is_constant() || keep3_count.as_constant() != 0); |
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1999 bool stomp_dest = (NOT_DEBUG(dest == T_OBJECT) DEBUG_ONLY(dest_count != 0)); |
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2000 bool fix_arg_base = (!close_count.is_constant() || open_count != close_count.as_constant()); |
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2001 |
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2002 if (stomp_dest | fix_arg_base) { |
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2003 // we will probably need an updated rax_argv value |
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2004 if (collect_slot_constant >= 0) { |
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2005 // rax_coll already holds the leading edge of |keep2|, so tweak it |
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2006 assert(rax_coll == rax_argv, "elided a move"); |
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2007 if (collect_slot_constant != 0) |
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2008 __ subptr(rax_argv, collect_slot_constant * Interpreter::stackElementSize); |
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2009 } else { |
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2010 // Just reload from RF.saved_args_base. |
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2011 __ movptr(rax_argv, saved_args_base_addr); |
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2012 } |
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2013 } |
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2014 |
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2015 // Old and new argument locations (based at slot 0). |
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2016 // Net shift (&new_argv - &old_argv) is (close_count - open_count). |
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2017 bool zero_open_count = (open_count == 0); // remember this bit of info |
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2018 if (move_keep3 && fix_arg_base) { |
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2019 // It will be easier to have everything in one register: |
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2020 if (close_count.is_register()) { |
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2021 // Deduct open_count from close_count register to get a clean +/- value. |
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2022 __ subptr(close_count.as_register(), open_count); |
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2023 } else { |
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2024 close_count = close_count.as_constant() - open_count; |
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2025 } |
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2026 open_count = 0; |
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2027 } |
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2028 Address old_argv(rax_argv, 0); |
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2029 Address new_argv(rax_argv, close_count, Interpreter::stackElementScale(), |
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2030 - open_count * Interpreter::stackElementSize); |
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2031 |
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2032 // First decide if any actual data are to be moved. |
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2033 // We can skip if (a) |keep3| is empty, or (b) the argument list size didn't change. |
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2034 // (As it happens, all movements involve an argument list size change.) |
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2035 |
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2036 // If there are variable parameters, use dynamic checks to skip around the whole mess. |
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|
2037 Label L_done; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2038 if (!keep3_count.is_constant()) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2039 __ testl(keep3_count.as_register(), keep3_count.as_register()); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2040 __ jcc(Assembler::zero, L_done); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2041 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2042 if (!close_count.is_constant()) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2043 __ cmpl(close_count.as_register(), open_count); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2044 __ jcc(Assembler::equal, L_done); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2045 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2046 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2047 if (move_keep3 && fix_arg_base) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2048 bool emit_move_down = false, emit_move_up = false, emit_guard = false; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2049 if (!close_count.is_constant()) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2050 emit_move_down = emit_guard = !zero_open_count; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2051 emit_move_up = true; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2052 } else if (open_count != close_count.as_constant()) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2053 emit_move_down = (open_count > close_count.as_constant()); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2054 emit_move_up = !emit_move_down; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2055 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2056 Label L_move_up; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2057 if (emit_guard) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2058 __ cmpl(close_count.as_register(), open_count); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2059 __ jcc(Assembler::greater, L_move_up); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2060 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2061 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2062 if (emit_move_down) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2063 // Move arguments down if |+dest+| > |-collect-| |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2064 // (This is rare, except when arguments are retained.) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2065 // This opens space for the return value. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2066 if (keep3_count.is_constant()) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2067 for (int i = 0; i < keep3_count.as_constant(); i++) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2068 __ movptr(rdx_temp, old_argv.plus_disp(i * Interpreter::stackElementSize)); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2069 __ movptr( new_argv.plus_disp(i * Interpreter::stackElementSize), rdx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2070 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2071 } else { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2072 Register rbx_argv_top = rbx_temp; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2073 __ lea(rbx_argv_top, old_argv.plus_disp(keep3_count, Interpreter::stackElementScale())); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2074 move_arg_slots_down(_masm, |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2075 old_argv, // beginning of old argv |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2076 rbx_argv_top, // end of old argv |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2077 close_count, // distance to move down (must be negative) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2078 rax_argv, rdx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2079 // Used argv as an iteration variable; reload from RF.saved_args_base. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2080 __ movptr(rax_argv, saved_args_base_addr); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2081 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2082 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2083 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2084 if (emit_guard) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2085 __ jmp(L_done); // assumes emit_move_up is true also |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2086 __ BIND(L_move_up); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2087 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2088 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2089 if (emit_move_up) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2090 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2091 // Move arguments up if |+dest+| < |-collect-| |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2092 // (This is usual, except when |keep3| is empty.) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2093 // This closes up the space occupied by the now-deleted collect values. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2094 if (keep3_count.is_constant()) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2095 for (int i = keep3_count.as_constant() - 1; i >= 0; i--) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2096 __ movptr(rdx_temp, old_argv.plus_disp(i * Interpreter::stackElementSize)); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2097 __ movptr( new_argv.plus_disp(i * Interpreter::stackElementSize), rdx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2098 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2099 } else { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2100 Address argv_top = old_argv.plus_disp(keep3_count, Interpreter::stackElementScale()); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2101 move_arg_slots_up(_masm, |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2102 rax_argv, // beginning of old argv |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2103 argv_top, // end of old argv |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2104 close_count, // distance to move up (must be positive) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2105 rbx_temp, rdx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2106 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2107 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2108 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2109 __ BIND(L_done); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2110 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2111 if (fix_arg_base) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2112 // adjust RF.saved_args_base by adding (close_count - open_count) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2113 if (!new_argv.is_same_address(Address(rax_argv, 0))) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2114 __ lea(rax_argv, new_argv); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2115 __ movptr(saved_args_base_addr, rax_argv); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2116 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2117 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2118 if (stomp_dest) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2119 // Stomp the return slot, so it doesn't hold garbage. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2120 // This isn't strictly necessary, but it may help detect bugs. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2121 int forty_two = RicochetFrame::RETURN_VALUE_PLACEHOLDER; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2122 __ movptr(Address(rax_argv, keep3_count, Address::times_ptr), |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2123 (int32_t) forty_two); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2124 // uses rsi_keep3_count |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2125 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2126 BLOCK_COMMENT("} adjust trailing arguments"); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2127 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2128 BLOCK_COMMENT("do_recursive_call"); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2129 __ mov(saved_last_sp, rsp); // set rsi/r13 for callee |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2130 __ pushptr(ExternalAddress(SharedRuntime::ricochet_blob()->bounce_addr()).addr()); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2131 // The globally unique bounce address has two purposes: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2132 // 1. It helps the JVM recognize this frame (frame::is_ricochet_frame). |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2133 // 2. When returned to, it cuts back the stack and redirects control flow |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2134 // to the return handler. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2135 // The return handler will further cut back the stack when it takes |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2136 // down the RF. Perhaps there is a way to streamline this further. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2137 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2138 // State during recursive call: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2139 // ... keep1 | dest | dest=42 | keep3 | RF... | collect | bounce_pc | |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2140 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2141 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2142 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2143 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2144 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2145 case _adapter_opt_return_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2146 case _adapter_opt_return_int: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2147 case _adapter_opt_return_long: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2148 case _adapter_opt_return_float: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2149 case _adapter_opt_return_double: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2150 case _adapter_opt_return_void: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2151 case _adapter_opt_return_S0_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2152 case _adapter_opt_return_S1_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2153 case _adapter_opt_return_S2_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2154 case _adapter_opt_return_S3_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2155 case _adapter_opt_return_S4_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2156 case _adapter_opt_return_S5_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2157 { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2158 BasicType dest_type_constant = ek_adapter_opt_return_type(ek); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2159 int dest_slot_constant = ek_adapter_opt_return_slot(ek); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2160 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2161 if (VerifyMethodHandles) RicochetFrame::verify_clean(_masm); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2162 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2163 if (dest_slot_constant == -1) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2164 // The current stub is a general handler for this dest_type. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2165 // It can be called from _adapter_opt_return_any below. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2166 // Stash the address in a little table. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2167 assert((dest_type_constant & CONV_TYPE_MASK) == dest_type_constant, "oob"); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2168 address return_handler = __ pc(); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2169 _adapter_return_handlers[dest_type_constant] = return_handler; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2170 if (dest_type_constant == T_INT) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2171 // do the subword types too |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2172 for (int bt = T_BOOLEAN; bt < T_INT; bt++) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2173 if (is_subword_type(BasicType(bt)) && |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2174 _adapter_return_handlers[bt] == NULL) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2175 _adapter_return_handlers[bt] = return_handler; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2176 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2177 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2178 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2179 } |
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6939861: JVM should handle more conversion operations
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parents:
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diff
changeset
|
2180 |
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6939861: JVM should handle more conversion operations
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parents:
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diff
changeset
|
2181 Register rbx_arg_base = rbx_temp; |
167b70ff3abc
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parents:
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diff
changeset
|
2182 assert_different_registers(rax, rdx, // possibly live return value registers |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
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diff
changeset
|
2183 rdi_temp, rbx_arg_base); |
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never
parents:
3336
diff
changeset
|
2184 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
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diff
changeset
|
2185 Address conversion_addr = RicochetFrame::frame_address(RicochetFrame::conversion_offset_in_bytes()); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
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diff
changeset
|
2186 Address saved_args_base_addr = RicochetFrame::frame_address(RicochetFrame::saved_args_base_offset_in_bytes()); |
167b70ff3abc
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parents:
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diff
changeset
|
2187 |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
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diff
changeset
|
2188 __ movptr(rbx_arg_base, saved_args_base_addr); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2189 RegisterOrConstant dest_slot = dest_slot_constant; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2190 if (dest_slot_constant == -1) { |
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6939861: JVM should handle more conversion operations
never
parents:
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diff
changeset
|
2191 load_conversion_vminfo(_masm, rdi_temp, conversion_addr); |
167b70ff3abc
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parents:
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diff
changeset
|
2192 dest_slot = rdi_temp; |
167b70ff3abc
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parents:
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diff
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|
2193 } |
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parents:
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diff
changeset
|
2194 // Store the result back into the argslot. |
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diff
changeset
|
2195 // This code uses the interpreter calling sequence, in which the return value |
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diff
changeset
|
2196 // is usually left in the TOS register, as defined by InterpreterMacroAssembler::pop. |
167b70ff3abc
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|
2197 // There are certain irregularities with floating point values, which can be seen |
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diff
changeset
|
2198 // in TemplateInterpreterGenerator::generate_return_entry_for. |
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never
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diff
changeset
|
2199 move_return_value(_masm, dest_type_constant, Address(rbx_arg_base, dest_slot, Interpreter::stackElementScale())); |
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|
2200 |
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|
2201 RicochetFrame::leave_ricochet_frame(_masm, rcx_recv, rbx_arg_base, rdx_temp); |
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diff
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|
2202 __ push(rdx_temp); // repush the return PC |
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diff
changeset
|
2203 |
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diff
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|
2204 // Load the final target and go. |
167b70ff3abc
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diff
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|
2205 if (VerifyMethodHandles) verify_method_handle(_masm, rcx_recv); |
167b70ff3abc
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|
2206 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
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|
2207 __ hlt(); // -------------------- |
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parents:
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diff
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|
2208 break; |
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diff
changeset
|
2209 } |
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6939861: JVM should handle more conversion operations
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diff
changeset
|
2210 |
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diff
changeset
|
2211 case _adapter_opt_return_any: |
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parents:
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diff
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|
2212 { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
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diff
changeset
|
2213 if (VerifyMethodHandles) RicochetFrame::verify_clean(_masm); |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3336
diff
changeset
|
2214 Register rdi_conv = rdi_temp; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2215 assert_different_registers(rax, rdx, // possibly live return value registers |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2216 rdi_conv, rbx_temp); |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
2217 |
167b70ff3abc
6939861: JVM should handle more conversion operations
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diff
changeset
|
2218 Address conversion_addr = RicochetFrame::frame_address(RicochetFrame::conversion_offset_in_bytes()); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
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diff
changeset
|
2219 load_conversion_dest_type(_masm, rdi_conv, conversion_addr); |
167b70ff3abc
6939861: JVM should handle more conversion operations
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diff
changeset
|
2220 __ lea(rbx_temp, ExternalAddress((address) &_adapter_return_handlers[0])); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
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3336
diff
changeset
|
2221 __ movptr(rbx_temp, Address(rbx_temp, rdi_conv, Address::times_ptr)); |
167b70ff3abc
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parents:
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diff
changeset
|
2222 |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3336
diff
changeset
|
2223 #ifdef ASSERT |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
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3336
diff
changeset
|
2224 { Label L_badconv; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2225 __ testptr(rbx_temp, rbx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2226 __ jccb(Assembler::zero, L_badconv); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2227 __ jmp(rbx_temp); |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
2228 __ bind(L_badconv); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2229 __ stop("bad method handle return"); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2230 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
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diff
changeset
|
2231 #else //ASSERT |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
2232 __ jmp(rbx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2233 #endif //ASSERT |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2234 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2235 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2236 |
710 | 2237 case _adapter_opt_spread_0: |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2238 case _adapter_opt_spread_1_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2239 case _adapter_opt_spread_2_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2240 case _adapter_opt_spread_3_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2241 case _adapter_opt_spread_4_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2242 case _adapter_opt_spread_5_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2243 case _adapter_opt_spread_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2244 case _adapter_opt_spread_byte: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2245 case _adapter_opt_spread_char: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2246 case _adapter_opt_spread_short: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2247 case _adapter_opt_spread_int: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2248 case _adapter_opt_spread_long: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2249 case _adapter_opt_spread_float: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2250 case _adapter_opt_spread_double: |
710 | 2251 { |
2252 // spread an array out into a group of arguments | |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2253 int length_constant = ek_adapter_opt_spread_count(ek); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2254 bool length_can_be_zero = (length_constant == 0); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2255 if (length_constant < 0) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2256 // some adapters with variable length must handle the zero case |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2257 if (!OptimizeMethodHandles || |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2258 ek_adapter_opt_spread_type(ek) != T_OBJECT) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2259 length_can_be_zero = true; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2260 } |
710 | 2261 |
2262 // find the address of the array argument | |
2263 __ movl(rax_argslot, rcx_amh_vmargslot); | |
2264 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
2265 | |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2266 // grab another temp |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2267 Register rsi_temp = rsi; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2268 { if (rsi_temp == saved_last_sp) __ push(saved_last_sp); } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2269 // (preceding push must be done after argslot address is taken!) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2270 #define UNPUSH_RSI \ |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2271 { if (rsi_temp == saved_last_sp) __ pop(saved_last_sp); } |
710 | 2272 |
2273 // arx_argslot points both to the array and to the first output arg | |
2274 vmarg = Address(rax_argslot, 0); | |
2275 | |
2276 // Get the array value. | |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2277 Register rsi_array = rsi_temp; |
710 | 2278 Register rdx_array_klass = rdx_temp; |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2279 BasicType elem_type = ek_adapter_opt_spread_type(ek); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2280 int elem_slots = type2size[elem_type]; // 1 or 2 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2281 int array_slots = 1; // array is always a T_OBJECT |
710 | 2282 int length_offset = arrayOopDesc::length_offset_in_bytes(); |
2283 int elem0_offset = arrayOopDesc::base_offset_in_bytes(elem_type); | |
2284 __ movptr(rsi_array, vmarg); | |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2285 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2286 Label L_array_is_empty, L_insert_arg_space, L_copy_args, L_args_done; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2287 if (length_can_be_zero) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2288 // handle the null pointer case, if zero is allowed |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2289 Label L_skip; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2290 if (length_constant < 0) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2291 load_conversion_vminfo(_masm, rbx_temp, rcx_amh_conversion); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2292 __ testl(rbx_temp, rbx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2293 __ jcc(Assembler::notZero, L_skip); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2294 } |
710 | 2295 __ testptr(rsi_array, rsi_array); |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2296 __ jcc(Assembler::zero, L_array_is_empty); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2297 __ bind(L_skip); |
710 | 2298 } |
2299 __ null_check(rsi_array, oopDesc::klass_offset_in_bytes()); | |
2300 __ load_klass(rdx_array_klass, rsi_array); | |
2301 | |
2302 // Check the array type. | |
2303 Register rbx_klass = rbx_temp; | |
1846 | 2304 __ load_heap_oop(rbx_klass, rcx_amh_argument); // this is a Class object! |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2305 load_klass_from_Class(_masm, rbx_klass); |
710 | 2306 |
2307 Label ok_array_klass, bad_array_klass, bad_array_length; | |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2308 __ check_klass_subtype(rdx_array_klass, rbx_klass, rdi_temp, ok_array_klass); |
710 | 2309 // If we get here, the type check failed! |
2310 __ jmp(bad_array_klass); | |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2311 __ BIND(ok_array_klass); |
710 | 2312 |
2313 // Check length. | |
2314 if (length_constant >= 0) { | |
2315 __ cmpl(Address(rsi_array, length_offset), length_constant); | |
2316 } else { | |
2317 Register rbx_vminfo = rbx_temp; | |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2318 load_conversion_vminfo(_masm, rbx_vminfo, rcx_amh_conversion); |
710 | 2319 __ cmpl(rbx_vminfo, Address(rsi_array, length_offset)); |
2320 } | |
2321 __ jcc(Assembler::notEqual, bad_array_length); | |
2322 | |
2323 Register rdx_argslot_limit = rdx_temp; | |
2324 | |
2325 // Array length checks out. Now insert any required stack slots. | |
2326 if (length_constant == -1) { | |
2327 // Form a pointer to the end of the affected region. | |
1506 | 2328 __ lea(rdx_argslot_limit, Address(rax_argslot, Interpreter::stackElementSize)); |
710 | 2329 // 'stack_move' is negative number of words to insert |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2330 // This number already accounts for elem_slots. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2331 Register rdi_stack_move = rdi_temp; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2332 load_stack_move(_masm, rdi_stack_move, rcx_recv, true); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2333 __ cmpptr(rdi_stack_move, 0); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2334 assert(stack_move_unit() < 0, "else change this comparison"); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2335 __ jcc(Assembler::less, L_insert_arg_space); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2336 __ jcc(Assembler::equal, L_copy_args); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2337 // single argument case, with no array movement |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
2338 __ BIND(L_array_is_empty); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2339 remove_arg_slots(_masm, -stack_move_unit() * array_slots, |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2340 rax_argslot, rbx_temp, rdx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2341 __ jmp(L_args_done); // no spreading to do |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2342 __ BIND(L_insert_arg_space); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2343 // come here in the usual case, stack_move < 0 (2 or more spread arguments) |
710 | 2344 Register rsi_temp = rsi_array; // spill this |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2345 insert_arg_slots(_masm, rdi_stack_move, |
710 | 2346 rax_argslot, rbx_temp, rsi_temp); |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3336
diff
changeset
|
2347 // reload the array since rsi was killed |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
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|
2348 // reload from rdx_argslot_limit since rax_argslot is now decremented |
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2349 __ movptr(rsi_array, Address(rdx_argslot_limit, -Interpreter::stackElementSize)); |
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2350 } else if (length_constant >= 1) { |
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2351 int new_slots = (length_constant * elem_slots) - array_slots; |
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2352 insert_arg_slots(_masm, new_slots * stack_move_unit(), |
710 | 2353 rax_argslot, rbx_temp, rdx_temp); |
2354 } else if (length_constant == 0) { | |
3363
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2355 __ BIND(L_array_is_empty); |
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2356 remove_arg_slots(_masm, -stack_move_unit() * array_slots, |
710 | 2357 rax_argslot, rbx_temp, rdx_temp); |
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2358 } else { |
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2359 ShouldNotReachHere(); |
710 | 2360 } |
2361 | |
2362 // Copy from the array to the new slots. | |
2363 // Note: Stack change code preserves integrity of rax_argslot pointer. | |
2364 // So even after slot insertions, rax_argslot still points to first argument. | |
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2365 // Beware: Arguments that are shallow on the stack are deep in the array, |
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2366 // and vice versa. So a downward-growing stack (the usual) has to be copied |
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2367 // elementwise in reverse order from the source array. |
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2368 __ BIND(L_copy_args); |
710 | 2369 if (length_constant == -1) { |
2370 // [rax_argslot, rdx_argslot_limit) is the area we are inserting into. | |
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2371 // Array element [0] goes at rdx_argslot_limit[-wordSize]. |
710 | 2372 Register rsi_source = rsi_array; |
2373 __ lea(rsi_source, Address(rsi_array, elem0_offset)); | |
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2374 Register rdx_fill_ptr = rdx_argslot_limit; |
710 | 2375 Label loop; |
3363
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2376 __ BIND(loop); |
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2377 __ addptr(rdx_fill_ptr, -Interpreter::stackElementSize * elem_slots); |
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2378 move_typed_arg(_masm, elem_type, true, |
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2379 Address(rdx_fill_ptr, 0), Address(rsi_source, 0), |
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2380 rbx_temp, rdi_temp); |
710 | 2381 __ addptr(rsi_source, type2aelembytes(elem_type)); |
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2382 __ cmpptr(rdx_fill_ptr, rax_argslot); |
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2383 __ jcc(Assembler::above, loop); |
710 | 2384 } else if (length_constant == 0) { |
2385 // nothing to copy | |
2386 } else { | |
2387 int elem_offset = elem0_offset; | |
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2388 int slot_offset = length_constant * Interpreter::stackElementSize; |
710 | 2389 for (int index = 0; index < length_constant; index++) { |
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2390 slot_offset -= Interpreter::stackElementSize * elem_slots; // fill backward |
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2391 move_typed_arg(_masm, elem_type, true, |
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2392 Address(rax_argslot, slot_offset), Address(rsi_array, elem_offset), |
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2393 rbx_temp, rdi_temp); |
710 | 2394 elem_offset += type2aelembytes(elem_type); |
2395 } | |
2396 } | |
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2397 __ BIND(L_args_done); |
710 | 2398 |
2399 // Arguments are spread. Move to next method handle. | |
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2400 UNPUSH_RSI; |
1846 | 2401 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 2402 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
2403 | |
2404 __ bind(bad_array_klass); | |
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2405 UNPUSH_RSI; |
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2406 assert(!vmarg.uses(rarg2_required), "must be different registers"); |
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2407 __ load_heap_oop( rarg2_required, Address(rdx_array_klass, java_mirror_offset)); // required type |
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2408 __ movptr( rarg1_actual, vmarg); // bad array |
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2409 __ movl( rarg0_code, (int) Bytecodes::_aaload); // who is complaining? |
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2410 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 2411 |
2412 __ bind(bad_array_length); | |
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2413 UNPUSH_RSI; |
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2414 assert(!vmarg.uses(rarg2_required), "must be different registers"); |
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2415 __ mov( rarg2_required, rcx_recv); // AMH requiring a certain length |
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2416 __ movptr( rarg1_actual, vmarg); // bad array |
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2417 __ movl( rarg0_code, (int) Bytecodes::_arraylength); // who is complaining? |
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2418 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
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2419 #undef UNPUSH_RSI |
710 | 2420 |
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2421 break; |
710 | 2422 } |
2423 | |
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2424 default: |
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2425 // do not require all platforms to recognize all adapter types |
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2426 __ nop(); |
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2427 return; |
710 | 2428 } |
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2429 BLOCK_COMMENT(err_msg("} Entry %s", entry_name(ek))); |
710 | 2430 __ hlt(); |
2431 | |
2432 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry); | |
2433 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
2434 | |
2435 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie)); | |
2436 } |