Mercurial > hg > truffle
annotate src/cpu/x86/vm/methodHandles_x86.cpp @ 4895:c742b0b47fe5
7119286: JSR292: SIGSEGV in JNIHandleBlock::release_block(JNIHandleBlock*, Thread*)+0x3c
Summary: unaligned stack in throw_NullPointerException_at_call_entry().
Reviewed-by: twisti, never, kvn
author | roland |
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date | Wed, 08 Feb 2012 09:52:24 +0100 |
parents | 392a3f07d567 |
children | 45a1bf98f1bb |
rev | line source |
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710 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
710 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
710 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "interpreter/interpreter.hpp" | |
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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 #ifndef PRODUCT |
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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 #endif |
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290 |
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291 #ifdef ASSERT |
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292 void MethodHandles::RicochetFrame::verify_clean(MacroAssembler* _masm) { |
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293 // The stack should look like this: |
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294 // ... keep1 | dest=42 | keep2 | RF | magic | handler | magic | recursive args | |
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295 // Check various invariants. |
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296 verify_offsets(); |
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297 |
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298 Register rdi_temp = rdi; |
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299 Register rcx_temp = rcx; |
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300 { __ push(rdi_temp); __ push(rcx_temp); } |
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301 #define UNPUSH_TEMPS \ |
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302 { __ pop(rcx_temp); __ pop(rdi_temp); } |
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303 |
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304 Address magic_number_1_addr = RicochetFrame::frame_address(RicochetFrame::magic_number_1_offset_in_bytes()); |
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305 Address magic_number_2_addr = RicochetFrame::frame_address(RicochetFrame::magic_number_2_offset_in_bytes()); |
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306 Address continuation_addr = RicochetFrame::frame_address(RicochetFrame::continuation_offset_in_bytes()); |
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307 Address conversion_addr = RicochetFrame::frame_address(RicochetFrame::conversion_offset_in_bytes()); |
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308 Address saved_args_base_addr = RicochetFrame::frame_address(RicochetFrame::saved_args_base_offset_in_bytes()); |
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309 |
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310 Label L_bad, L_ok; |
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311 BLOCK_COMMENT("verify_clean {"); |
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312 // Magic numbers must check out: |
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313 __ cmpptr(magic_number_1_addr, (int32_t) MAGIC_NUMBER_1); |
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314 __ jcc(Assembler::notEqual, L_bad); |
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315 __ cmpptr(magic_number_2_addr, (int32_t) MAGIC_NUMBER_2); |
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316 __ jcc(Assembler::notEqual, L_bad); |
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317 |
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318 // Arguments pointer must look reasonable: |
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319 __ movptr(rcx_temp, saved_args_base_addr); |
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320 __ cmpptr(rcx_temp, rbp); |
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321 __ jcc(Assembler::below, L_bad); |
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322 __ subptr(rcx_temp, UNREASONABLE_STACK_MOVE * Interpreter::stackElementSize); |
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323 __ cmpptr(rcx_temp, rbp); |
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324 __ jcc(Assembler::above, L_bad); |
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325 |
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326 load_conversion_dest_type(_masm, rdi_temp, conversion_addr); |
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327 __ cmpl(rdi_temp, T_VOID); |
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328 __ jcc(Assembler::equal, L_ok); |
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329 __ movptr(rcx_temp, saved_args_base_addr); |
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330 load_conversion_vminfo(_masm, rdi_temp, conversion_addr); |
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331 __ cmpptr(Address(rcx_temp, rdi_temp, Interpreter::stackElementScale()), |
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332 (int32_t) RETURN_VALUE_PLACEHOLDER); |
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333 __ jcc(Assembler::equal, L_ok); |
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334 __ BIND(L_bad); |
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335 UNPUSH_TEMPS; |
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336 __ stop("damaged ricochet frame"); |
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337 __ BIND(L_ok); |
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338 UNPUSH_TEMPS; |
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339 BLOCK_COMMENT("} verify_clean"); |
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340 |
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341 #undef UNPUSH_TEMPS |
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342 |
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343 } |
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344 #endif //ASSERT |
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345 |
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346 void MethodHandles::load_klass_from_Class(MacroAssembler* _masm, Register klass_reg) { |
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347 if (VerifyMethodHandles) |
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348 verify_klass(_masm, klass_reg, SystemDictionaryHandles::Class_klass(), |
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349 "AMH argument is a Class"); |
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350 __ load_heap_oop(klass_reg, Address(klass_reg, java_lang_Class::klass_offset_in_bytes())); |
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351 } |
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352 |
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353 void MethodHandles::load_conversion_vminfo(MacroAssembler* _masm, Register reg, Address conversion_field_addr) { |
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354 int bits = BitsPerByte; |
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355 int offset = (CONV_VMINFO_SHIFT / bits); |
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356 int shift = (CONV_VMINFO_SHIFT % bits); |
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357 __ load_unsigned_byte(reg, conversion_field_addr.plus_disp(offset)); |
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358 assert(CONV_VMINFO_MASK == right_n_bits(bits - shift), "else change type of previous load"); |
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359 assert(shift == 0, "no shift needed"); |
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360 } |
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361 |
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362 void MethodHandles::load_conversion_dest_type(MacroAssembler* _masm, Register reg, Address conversion_field_addr) { |
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363 int bits = BitsPerByte; |
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364 int offset = (CONV_DEST_TYPE_SHIFT / bits); |
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365 int shift = (CONV_DEST_TYPE_SHIFT % bits); |
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366 __ load_unsigned_byte(reg, conversion_field_addr.plus_disp(offset)); |
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367 assert(CONV_TYPE_MASK == right_n_bits(bits - shift), "else change type of previous load"); |
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368 __ shrl(reg, shift); |
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369 DEBUG_ONLY(int conv_type_bits = (int) exact_log2(CONV_TYPE_MASK+1)); |
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370 assert((shift + conv_type_bits) == bits, "left justified in byte"); |
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371 } |
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372 |
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373 void MethodHandles::load_stack_move(MacroAssembler* _masm, |
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374 Register rdi_stack_move, |
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375 Register rcx_amh, |
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376 bool might_be_negative) { |
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377 BLOCK_COMMENT("load_stack_move {"); |
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378 Address rcx_amh_conversion(rcx_amh, java_lang_invoke_AdapterMethodHandle::conversion_offset_in_bytes()); |
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379 __ movl(rdi_stack_move, rcx_amh_conversion); |
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380 __ sarl(rdi_stack_move, CONV_STACK_MOVE_SHIFT); |
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381 #ifdef _LP64 |
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382 if (might_be_negative) { |
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383 // clean high bits of stack motion register (was loaded as an int) |
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384 __ movslq(rdi_stack_move, rdi_stack_move); |
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385 } |
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386 #endif //_LP64 |
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387 #ifdef ASSERT |
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388 if (VerifyMethodHandles) { |
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389 Label L_ok, L_bad; |
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390 int32_t stack_move_limit = 0x4000; // extra-large |
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391 __ cmpptr(rdi_stack_move, stack_move_limit); |
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392 __ jcc(Assembler::greaterEqual, L_bad); |
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393 __ cmpptr(rdi_stack_move, -stack_move_limit); |
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394 __ jcc(Assembler::greater, L_ok); |
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395 __ bind(L_bad); |
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396 __ stop("load_stack_move of garbage value"); |
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397 __ BIND(L_ok); |
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398 } |
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399 #endif |
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400 BLOCK_COMMENT("} load_stack_move"); |
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401 } |
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402 |
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403 #ifdef ASSERT |
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404 void MethodHandles::RicochetFrame::verify_offsets() { |
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405 // Check compatibility of this struct with the more generally used offsets of class frame: |
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406 int ebp_off = sender_link_offset_in_bytes(); // offset from struct base to local rbp value |
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407 assert(ebp_off + wordSize*frame::interpreter_frame_method_offset == saved_args_base_offset_in_bytes(), ""); |
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408 assert(ebp_off + wordSize*frame::interpreter_frame_last_sp_offset == conversion_offset_in_bytes(), ""); |
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409 assert(ebp_off + wordSize*frame::interpreter_frame_sender_sp_offset == exact_sender_sp_offset_in_bytes(), ""); |
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410 // These last two have to be exact: |
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411 assert(ebp_off + wordSize*frame::link_offset == sender_link_offset_in_bytes(), ""); |
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412 assert(ebp_off + wordSize*frame::return_addr_offset == sender_pc_offset_in_bytes(), ""); |
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413 } |
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414 |
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415 void MethodHandles::RicochetFrame::verify() const { |
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416 verify_offsets(); |
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417 assert(magic_number_1() == MAGIC_NUMBER_1, err_msg(PTR_FORMAT " == " PTR_FORMAT, magic_number_1(), MAGIC_NUMBER_1)); |
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418 assert(magic_number_2() == MAGIC_NUMBER_2, err_msg(PTR_FORMAT " == " PTR_FORMAT, magic_number_2(), MAGIC_NUMBER_2)); |
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419 if (!Universe::heap()->is_gc_active()) { |
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420 if (saved_args_layout() != NULL) { |
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421 assert(saved_args_layout()->is_method(), "must be valid oop"); |
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422 } |
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423 if (saved_target() != NULL) { |
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424 assert(java_lang_invoke_MethodHandle::is_instance(saved_target()), "checking frame value"); |
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425 } |
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426 } |
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427 int conv_op = adapter_conversion_op(conversion()); |
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428 assert(conv_op == java_lang_invoke_AdapterMethodHandle::OP_COLLECT_ARGS || |
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429 conv_op == java_lang_invoke_AdapterMethodHandle::OP_FOLD_ARGS || |
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430 conv_op == java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_REF, |
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431 "must be a sane conversion"); |
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432 if (has_return_value_slot()) { |
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433 assert(*return_value_slot_addr() == RETURN_VALUE_PLACEHOLDER, ""); |
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434 } |
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435 } |
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436 #endif //PRODUCT |
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437 |
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438 #ifdef ASSERT |
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439 void MethodHandles::verify_argslot(MacroAssembler* _masm, |
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440 Register argslot_reg, |
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441 const char* error_message) { |
710 | 442 // Verify that argslot lies within (rsp, rbp]. |
443 Label L_ok, L_bad; | |
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444 BLOCK_COMMENT("verify_argslot {"); |
1304 | 445 __ cmpptr(argslot_reg, rbp); |
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446 __ jccb(Assembler::above, L_bad); |
1304 | 447 __ cmpptr(rsp, argslot_reg); |
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448 __ jccb(Assembler::below, L_ok); |
710 | 449 __ bind(L_bad); |
450 __ stop(error_message); | |
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451 __ BIND(L_ok); |
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452 BLOCK_COMMENT("} verify_argslot"); |
710 | 453 } |
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454 |
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455 void MethodHandles::verify_argslots(MacroAssembler* _masm, |
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456 RegisterOrConstant arg_slots, |
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457 Register arg_slot_base_reg, |
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458 bool negate_argslots, |
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459 const char* error_message) { |
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460 // Verify that [argslot..argslot+size) lies within (rsp, rbp). |
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461 Label L_ok, L_bad; |
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462 Register rdi_temp = rdi; |
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463 BLOCK_COMMENT("verify_argslots {"); |
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464 __ push(rdi_temp); |
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465 if (negate_argslots) { |
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466 if (arg_slots.is_constant()) { |
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467 arg_slots = -1 * arg_slots.as_constant(); |
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468 } else { |
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469 __ movptr(rdi_temp, arg_slots); |
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470 __ negptr(rdi_temp); |
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471 arg_slots = rdi_temp; |
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472 } |
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473 } |
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474 __ lea(rdi_temp, Address(arg_slot_base_reg, arg_slots, Interpreter::stackElementScale())); |
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475 __ cmpptr(rdi_temp, rbp); |
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476 __ pop(rdi_temp); |
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477 __ jcc(Assembler::above, L_bad); |
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478 __ cmpptr(rsp, arg_slot_base_reg); |
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479 __ jcc(Assembler::below, L_ok); |
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480 __ bind(L_bad); |
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481 __ stop(error_message); |
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482 __ BIND(L_ok); |
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483 BLOCK_COMMENT("} verify_argslots"); |
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484 } |
710 | 485 |
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486 // Make sure that arg_slots has the same sign as the given direction. |
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487 // If (and only if) arg_slots is a assembly-time constant, also allow it to be zero. |
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488 void MethodHandles::verify_stack_move(MacroAssembler* _masm, |
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489 RegisterOrConstant arg_slots, int direction) { |
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490 bool allow_zero = arg_slots.is_constant(); |
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491 if (direction == 0) { direction = +1; allow_zero = true; } |
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492 assert(stack_move_unit() == -1, "else add extra checks here"); |
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493 if (arg_slots.is_register()) { |
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494 Label L_ok, L_bad; |
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495 BLOCK_COMMENT("verify_stack_move {"); |
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496 // testl(arg_slots.as_register(), -stack_move_unit() - 1); // no need |
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497 // jcc(Assembler::notZero, L_bad); |
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498 __ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD); |
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499 if (direction > 0) { |
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500 __ jcc(allow_zero ? Assembler::less : Assembler::lessEqual, L_bad); |
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501 __ cmpptr(arg_slots.as_register(), (int32_t) UNREASONABLE_STACK_MOVE); |
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502 __ jcc(Assembler::less, L_ok); |
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503 } else { |
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504 __ jcc(allow_zero ? Assembler::greater : Assembler::greaterEqual, L_bad); |
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505 __ cmpptr(arg_slots.as_register(), (int32_t) -UNREASONABLE_STACK_MOVE); |
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506 __ jcc(Assembler::greater, L_ok); |
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507 } |
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508 __ bind(L_bad); |
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509 if (direction > 0) |
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510 __ stop("assert arg_slots > 0"); |
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511 else |
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512 __ stop("assert arg_slots < 0"); |
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513 __ BIND(L_ok); |
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514 BLOCK_COMMENT("} verify_stack_move"); |
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515 } else { |
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516 intptr_t size = arg_slots.as_constant(); |
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517 if (direction < 0) size = -size; |
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518 assert(size >= 0, "correct direction of constant move"); |
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519 assert(size < UNREASONABLE_STACK_MOVE, "reasonable size of constant move"); |
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520 } |
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521 } |
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522 |
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523 void MethodHandles::verify_klass(MacroAssembler* _masm, |
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524 Register obj, KlassHandle klass, |
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525 const char* error_message) { |
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526 oop* klass_addr = klass.raw_value(); |
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527 assert(klass_addr >= SystemDictionaryHandles::Object_klass().raw_value() && |
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528 klass_addr <= SystemDictionaryHandles::Long_klass().raw_value(), |
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529 "must be one of the SystemDictionaryHandles"); |
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530 Register temp = rdi; |
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531 Label L_ok, L_bad; |
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532 BLOCK_COMMENT("verify_klass {"); |
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533 __ verify_oop(obj); |
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534 __ testptr(obj, obj); |
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535 __ jcc(Assembler::zero, L_bad); |
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536 __ push(temp); |
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537 __ load_klass(temp, obj); |
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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 intptr_t super_check_offset = klass->super_check_offset(); |
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541 __ movptr(temp, Address(temp, super_check_offset)); |
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542 __ cmpptr(temp, ExternalAddress((address) klass_addr)); |
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543 __ jcc(Assembler::equal, L_ok); |
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544 __ pop(temp); |
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545 __ bind(L_bad); |
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546 __ stop(error_message); |
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547 __ BIND(L_ok); |
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548 __ pop(temp); |
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549 BLOCK_COMMENT("} verify_klass"); |
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550 } |
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551 #endif //ASSERT |
710 | 552 |
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553 void MethodHandles::jump_from_method_handle(MacroAssembler* _masm, Register method, Register temp) { |
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554 if (JvmtiExport::can_post_interpreter_events()) { |
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555 Label run_compiled_code; |
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556 // JVMTI events, such as single-stepping, are implemented partly by avoiding running |
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557 // compiled code in threads for which the event is enabled. Check here for |
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558 // interp_only_mode if these events CAN be enabled. |
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559 #ifdef _LP64 |
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560 Register rthread = r15_thread; |
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561 #else |
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562 Register rthread = temp; |
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563 __ get_thread(rthread); |
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564 #endif |
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565 // interp_only is an int, on little endian it is sufficient to test the byte only |
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566 // Is a cmpl faster? |
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567 __ cmpb(Address(rthread, JavaThread::interp_only_mode_offset()), 0); |
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568 __ jccb(Assembler::zero, run_compiled_code); |
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569 __ jmp(Address(method, methodOopDesc::interpreter_entry_offset())); |
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570 __ bind(run_compiled_code); |
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571 } |
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572 __ jmp(Address(method, methodOopDesc::from_interpreted_offset())); |
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573 } |
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574 |
710 | 575 // Code generation |
576 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) { | |
577 // rbx: methodOop | |
578 // rcx: receiver method handle (must load from sp[MethodTypeForm.vmslots]) | |
579 // rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted) | |
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580 // rdx, rdi: garbage temp, blown away |
710 | 581 |
582 Register rbx_method = rbx; | |
583 Register rcx_recv = rcx; | |
584 Register rax_mtype = rax; | |
585 Register rdx_temp = rdx; | |
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586 Register rdi_temp = rdi; |
710 | 587 |
588 // emit WrongMethodType path first, to enable jccb back-branch from main path | |
589 Label wrong_method_type; | |
590 __ bind(wrong_method_type); | |
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591 Label invoke_generic_slow_path, invoke_exact_error_path; |
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592 assert(methodOopDesc::intrinsic_id_size_in_bytes() == sizeof(u1), "");; |
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593 __ cmpb(Address(rbx_method, methodOopDesc::intrinsic_id_offset_in_bytes()), (int) vmIntrinsics::_invokeExact); |
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594 __ jcc(Assembler::notEqual, invoke_generic_slow_path); |
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595 __ jmp(invoke_exact_error_path); |
710 | 596 |
597 // here's where control starts out: | |
598 __ align(CodeEntryAlignment); | |
599 address entry_point = __ pc(); | |
600 | |
601 // fetch the MethodType from the method handle into rax (the 'check' register) | |
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602 // FIXME: Interpreter should transmit pre-popped stack pointer, to locate base of arg list. |
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603 // This would simplify several touchy bits of code. |
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604 // See 6984712: JSR 292 method handle calls need a clean argument base pointer |
710 | 605 { |
606 Register tem = rbx_method; | |
607 for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) { | |
608 __ movptr(rax_mtype, Address(tem, *pchase)); | |
609 tem = rax_mtype; // in case there is another indirection | |
610 } | |
611 } | |
612 | |
613 // given the MethodType, find out where the MH argument is buried | |
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614 __ load_heap_oop(rdx_temp, Address(rax_mtype, __ delayed_value(java_lang_invoke_MethodType::form_offset_in_bytes, rdi_temp))); |
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615 Register rdx_vmslots = rdx_temp; |
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616 __ movl(rdx_vmslots, Address(rdx_temp, __ delayed_value(java_lang_invoke_MethodTypeForm::vmslots_offset_in_bytes, rdi_temp))); |
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617 Address mh_receiver_slot_addr = __ argument_address(rdx_vmslots); |
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618 __ movptr(rcx_recv, mh_receiver_slot_addr); |
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619 |
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620 trace_method_handle(_masm, "invokeExact"); |
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621 |
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622 __ check_method_handle_type(rax_mtype, rcx_recv, rdi_temp, wrong_method_type); |
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623 |
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624 // Nobody uses the MH receiver slot after this. Make sure. |
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625 DEBUG_ONLY(__ movptr(mh_receiver_slot_addr, (int32_t)0x999999)); |
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626 |
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627 __ jump_to_method_handle_entry(rcx_recv, rdi_temp); |
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628 |
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629 // error path for invokeExact (only) |
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630 __ bind(invoke_exact_error_path); |
3937 | 631 // ensure that the top of stack is properly aligned. |
632 __ mov(rdi, rsp); | |
633 __ andptr(rsp, -StackAlignmentInBytes); // Align the stack for the ABI | |
634 __ pushptr(Address(rdi, 0)); // Pick up the return address | |
635 | |
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636 // Stub wants expected type in rax and the actual type in rcx |
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637 __ jump(ExternalAddress(StubRoutines::throw_WrongMethodTypeException_entry())); |
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638 |
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639 // for invokeGeneric (only), apply argument and result conversions on the fly |
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640 __ bind(invoke_generic_slow_path); |
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641 #ifdef ASSERT |
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642 if (VerifyMethodHandles) { |
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643 Label L; |
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644 __ cmpb(Address(rbx_method, methodOopDesc::intrinsic_id_offset_in_bytes()), (int) vmIntrinsics::_invokeGeneric); |
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645 __ jcc(Assembler::equal, L); |
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646 __ stop("bad methodOop::intrinsic_id"); |
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647 __ bind(L); |
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648 } |
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649 #endif //ASSERT |
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650 Register rbx_temp = rbx_method; // don't need it now |
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651 |
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652 // make room on the stack for another pointer: |
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653 Register rcx_argslot = rcx_recv; |
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654 __ lea(rcx_argslot, __ argument_address(rdx_vmslots, 1)); |
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655 insert_arg_slots(_masm, 2 * stack_move_unit(), |
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656 rcx_argslot, rbx_temp, rdx_temp); |
710 | 657 |
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658 // load up an adapter from the calling type (Java weaves this) |
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659 Register rdx_adapter = rdx_temp; |
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660 __ load_heap_oop(rdx_temp, Address(rax_mtype, __ delayed_value(java_lang_invoke_MethodType::form_offset_in_bytes, rdi_temp))); |
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661 __ load_heap_oop(rdx_adapter, Address(rdx_temp, __ delayed_value(java_lang_invoke_MethodTypeForm::genericInvoker_offset_in_bytes, rdi_temp))); |
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662 __ verify_oop(rdx_adapter); |
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663 __ movptr(Address(rcx_argslot, 1 * Interpreter::stackElementSize), rdx_adapter); |
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664 // As a trusted first argument, pass the type being called, so the adapter knows |
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665 // the actual types of the arguments and return values. |
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666 // (Generic invokers are shared among form-families of method-type.) |
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667 __ movptr(Address(rcx_argslot, 0 * Interpreter::stackElementSize), rax_mtype); |
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668 // FIXME: assert that rdx_adapter is of the right method-type. |
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669 __ mov(rcx, rdx_adapter); |
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670 trace_method_handle(_masm, "invokeGeneric"); |
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671 __ jump_to_method_handle_entry(rcx, rdi_temp); |
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672 |
710 | 673 return entry_point; |
674 } | |
675 | |
676 // Helper to insert argument slots into the stack. | |
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677 // arg_slots must be a multiple of stack_move_unit() and < 0 |
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678 // rax_argslot is decremented to point to the new (shifted) location of the argslot |
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679 // But, rdx_temp ends up holding the original value of rax_argslot. |
710 | 680 void MethodHandles::insert_arg_slots(MacroAssembler* _masm, |
681 RegisterOrConstant arg_slots, | |
682 Register rax_argslot, | |
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683 Register rbx_temp, Register rdx_temp) { |
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684 // allow constant zero |
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685 if (arg_slots.is_constant() && arg_slots.as_constant() == 0) |
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686 return; |
710 | 687 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, |
688 (!arg_slots.is_register() ? rsp : arg_slots.as_register())); | |
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689 if (VerifyMethodHandles) |
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690 verify_argslot(_masm, rax_argslot, "insertion point must fall within current frame"); |
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691 if (VerifyMethodHandles) |
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692 verify_stack_move(_masm, arg_slots, -1); |
710 | 693 |
694 // Make space on the stack for the inserted argument(s). | |
695 // Then pull down everything shallower than rax_argslot. | |
696 // The stacked return address gets pulled down with everything else. | |
697 // That is, copy [rsp, argslot) downward by -size words. In pseudo-code: | |
698 // rsp -= size; | |
699 // for (rdx = rsp + size; rdx < argslot; rdx++) | |
700 // rdx[-size] = rdx[0] | |
701 // argslot -= size; | |
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702 BLOCK_COMMENT("insert_arg_slots {"); |
710 | 703 __ mov(rdx_temp, rsp); // source pointer for copy |
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704 __ lea(rsp, Address(rsp, arg_slots, Interpreter::stackElementScale())); |
710 | 705 { |
706 Label loop; | |
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707 __ BIND(loop); |
710 | 708 // pull one word down each time through the loop |
709 __ movptr(rbx_temp, Address(rdx_temp, 0)); | |
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710 __ movptr(Address(rdx_temp, arg_slots, Interpreter::stackElementScale()), rbx_temp); |
710 | 711 __ addptr(rdx_temp, wordSize); |
712 __ cmpptr(rdx_temp, rax_argslot); | |
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713 __ jcc(Assembler::below, loop); |
710 | 714 } |
715 | |
716 // Now move the argslot down, to point to the opened-up space. | |
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717 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Interpreter::stackElementScale())); |
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718 BLOCK_COMMENT("} insert_arg_slots"); |
710 | 719 } |
720 | |
721 // Helper to remove argument slots from the stack. | |
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722 // arg_slots must be a multiple of stack_move_unit() and > 0 |
710 | 723 void MethodHandles::remove_arg_slots(MacroAssembler* _masm, |
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724 RegisterOrConstant arg_slots, |
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725 Register rax_argslot, |
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726 Register rbx_temp, Register rdx_temp) { |
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727 // allow constant zero |
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728 if (arg_slots.is_constant() && arg_slots.as_constant() == 0) |
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729 return; |
710 | 730 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, |
731 (!arg_slots.is_register() ? rsp : arg_slots.as_register())); | |
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732 if (VerifyMethodHandles) |
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733 verify_argslots(_masm, arg_slots, rax_argslot, false, |
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734 "deleted argument(s) must fall within current frame"); |
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735 if (VerifyMethodHandles) |
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736 verify_stack_move(_masm, arg_slots, +1); |
710 | 737 |
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738 BLOCK_COMMENT("remove_arg_slots {"); |
710 | 739 // Pull up everything shallower than rax_argslot. |
740 // Then remove the excess space on the stack. | |
741 // The stacked return address gets pulled up with everything else. | |
742 // That is, copy [rsp, argslot) upward by size words. In pseudo-code: | |
743 // for (rdx = argslot-1; rdx >= rsp; --rdx) | |
744 // rdx[size] = rdx[0] | |
745 // argslot += size; | |
746 // rsp += size; | |
747 __ lea(rdx_temp, Address(rax_argslot, -wordSize)); // source pointer for copy | |
748 { | |
749 Label loop; | |
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750 __ BIND(loop); |
710 | 751 // pull one word up each time through the loop |
752 __ movptr(rbx_temp, Address(rdx_temp, 0)); | |
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753 __ movptr(Address(rdx_temp, arg_slots, Interpreter::stackElementScale()), rbx_temp); |
710 | 754 __ addptr(rdx_temp, -wordSize); |
755 __ cmpptr(rdx_temp, rsp); | |
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756 __ jcc(Assembler::aboveEqual, loop); |
710 | 757 } |
758 | |
759 // Now move the argslot up, to point to the just-copied block. | |
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760 __ lea(rsp, Address(rsp, arg_slots, Interpreter::stackElementScale())); |
710 | 761 // And adjust the argslot address to point at the deletion point. |
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762 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Interpreter::stackElementScale())); |
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763 BLOCK_COMMENT("} remove_arg_slots"); |
710 | 764 } |
765 | |
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766 // Helper to copy argument slots to the top of the stack. |
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767 // The sequence starts with rax_argslot and is counted by slot_count |
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768 // slot_count must be a multiple of stack_move_unit() and >= 0 |
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769 // This function blows the temps but does not change rax_argslot. |
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770 void MethodHandles::push_arg_slots(MacroAssembler* _masm, |
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771 Register rax_argslot, |
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772 RegisterOrConstant slot_count, |
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773 int skip_words_count, |
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774 Register rbx_temp, Register rdx_temp) { |
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775 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, |
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776 (!slot_count.is_register() ? rbp : slot_count.as_register()), |
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777 rsp); |
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778 assert(Interpreter::stackElementSize == wordSize, "else change this code"); |
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779 |
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780 if (VerifyMethodHandles) |
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781 verify_stack_move(_masm, slot_count, 0); |
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782 |
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783 // allow constant zero |
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784 if (slot_count.is_constant() && slot_count.as_constant() == 0) |
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785 return; |
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|
786 |
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|
787 BLOCK_COMMENT("push_arg_slots {"); |
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|
788 |
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diff
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|
789 Register rbx_top = rbx_temp; |
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|
790 |
167b70ff3abc
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|
791 // There is at most 1 word to carry down with the TOS. |
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|
792 switch (skip_words_count) { |
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diff
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|
793 case 1: __ pop(rdx_temp); break; |
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never
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3336
diff
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|
794 case 0: break; |
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diff
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|
795 default: ShouldNotReachHere(); |
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3336
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|
796 } |
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diff
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|
797 |
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parents:
3336
diff
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|
798 if (slot_count.is_constant()) { |
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never
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3336
diff
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|
799 for (int i = slot_count.as_constant() - 1; i >= 0; i--) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
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3336
diff
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|
800 __ pushptr(Address(rax_argslot, i * wordSize)); |
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never
parents:
3336
diff
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|
801 } |
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|
802 } else { |
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diff
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|
803 Label L_plural, L_loop, L_break; |
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6939861: JVM should handle more conversion operations
never
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3336
diff
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|
804 // Emit code to dynamically check for the common cases, zero and one slot. |
167b70ff3abc
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never
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3336
diff
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|
805 __ cmpl(slot_count.as_register(), (int32_t) 1); |
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never
parents:
3336
diff
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|
806 __ jccb(Assembler::greater, L_plural); |
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never
parents:
3336
diff
changeset
|
807 __ jccb(Assembler::less, L_break); |
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6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
808 __ pushptr(Address(rax_argslot, 0)); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
809 __ jmpb(L_break); |
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never
parents:
3336
diff
changeset
|
810 __ BIND(L_plural); |
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diff
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|
811 |
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6939861: JVM should handle more conversion operations
never
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3336
diff
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|
812 // Loop for 2 or more: |
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never
parents:
3336
diff
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|
813 // rbx = &rax[slot_count] |
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never
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diff
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|
814 // while (rbx > rax) *(--rsp) = *(--rbx) |
167b70ff3abc
6939861: JVM should handle more conversion operations
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|
815 __ lea(rbx_top, Address(rax_argslot, slot_count, Address::times_ptr)); |
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never
parents:
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diff
changeset
|
816 __ BIND(L_loop); |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
817 __ subptr(rbx_top, wordSize); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
818 __ pushptr(Address(rbx_top, 0)); |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
819 __ cmpptr(rbx_top, rax_argslot); |
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never
parents:
3336
diff
changeset
|
820 __ jcc(Assembler::above, L_loop); |
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never
parents:
3336
diff
changeset
|
821 __ bind(L_break); |
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6939861: JVM should handle more conversion operations
never
parents:
3336
diff
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|
822 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
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diff
changeset
|
823 switch (skip_words_count) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
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|
824 case 1: __ push(rdx_temp); break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
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|
825 case 0: break; |
167b70ff3abc
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never
parents:
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diff
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|
826 default: ShouldNotReachHere(); |
167b70ff3abc
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never
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3336
diff
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|
827 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
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|
828 BLOCK_COMMENT("} push_arg_slots"); |
167b70ff3abc
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parents:
3336
diff
changeset
|
829 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3336
diff
changeset
|
830 |
167b70ff3abc
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parents:
3336
diff
changeset
|
831 // in-place movement; no change to rsp |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
832 // blows rax_temp, rdx_temp |
167b70ff3abc
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3336
diff
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|
833 void MethodHandles::move_arg_slots_up(MacroAssembler* _masm, |
167b70ff3abc
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never
parents:
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diff
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|
834 Register rbx_bottom, // invariant |
167b70ff3abc
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parents:
3336
diff
changeset
|
835 Address top_addr, // can use rax_temp |
167b70ff3abc
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parents:
3336
diff
changeset
|
836 RegisterOrConstant positive_distance_in_slots, |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
837 Register rax_temp, Register rdx_temp) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
838 BLOCK_COMMENT("move_arg_slots_up {"); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
839 assert_different_registers(rbx_bottom, |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
840 rax_temp, rdx_temp, |
167b70ff3abc
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parents:
3336
diff
changeset
|
841 positive_distance_in_slots.register_or_noreg()); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
842 Label L_loop, L_break; |
167b70ff3abc
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parents:
3336
diff
changeset
|
843 Register rax_top = rax_temp; |
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3336
diff
changeset
|
844 if (!top_addr.is_same_address(Address(rax_top, 0))) |
167b70ff3abc
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parents:
3336
diff
changeset
|
845 __ lea(rax_top, top_addr); |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
846 // Detect empty (or broken) loop: |
167b70ff3abc
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parents:
3336
diff
changeset
|
847 #ifdef ASSERT |
167b70ff3abc
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parents:
3336
diff
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|
848 if (VerifyMethodHandles) { |
167b70ff3abc
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parents:
3336
diff
changeset
|
849 // Verify that &bottom < &top (non-empty interval) |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
850 Label L_ok, L_bad; |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
851 if (positive_distance_in_slots.is_register()) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
852 __ cmpptr(positive_distance_in_slots.as_register(), (int32_t) 0); |
167b70ff3abc
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never
parents:
3336
diff
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|
853 __ jcc(Assembler::lessEqual, L_bad); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
854 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3336
diff
changeset
|
855 __ cmpptr(rbx_bottom, rax_top); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
856 __ jcc(Assembler::below, L_ok); |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
857 __ bind(L_bad); |
167b70ff3abc
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parents:
3336
diff
changeset
|
858 __ stop("valid bounds (copy up)"); |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
859 __ BIND(L_ok); |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3336
diff
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|
860 } |
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parents:
3336
diff
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|
861 #endif |
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never
parents:
3336
diff
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|
862 __ cmpptr(rbx_bottom, rax_top); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
863 __ jccb(Assembler::aboveEqual, L_break); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
864 // work rax down to rbx, copying contiguous data upwards |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
865 // In pseudo-code: |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
866 // [rbx, rax) = &[bottom, top) |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
867 // while (--rax >= rbx) *(rax + distance) = *(rax + 0), rax--; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
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|
868 __ BIND(L_loop); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
869 __ subptr(rax_top, wordSize); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
870 __ movptr(rdx_temp, Address(rax_top, 0)); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
871 __ movptr( Address(rax_top, positive_distance_in_slots, Address::times_ptr), rdx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3336
diff
changeset
|
872 __ cmpptr(rax_top, rbx_bottom); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
873 __ jcc(Assembler::above, L_loop); |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3336
diff
changeset
|
874 assert(Interpreter::stackElementSize == wordSize, "else change loop"); |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3336
diff
changeset
|
875 __ bind(L_break); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
876 BLOCK_COMMENT("} move_arg_slots_up"); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
877 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3336
diff
changeset
|
878 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
879 // in-place movement; no change to rsp |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
880 // blows rax_temp, rdx_temp |
167b70ff3abc
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parents:
3336
diff
changeset
|
881 void MethodHandles::move_arg_slots_down(MacroAssembler* _masm, |
167b70ff3abc
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never
parents:
3336
diff
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|
882 Address bottom_addr, // can use rax_temp |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
883 Register rbx_top, // invariant |
167b70ff3abc
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parents:
3336
diff
changeset
|
884 RegisterOrConstant negative_distance_in_slots, |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
885 Register rax_temp, Register rdx_temp) { |
167b70ff3abc
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parents:
3336
diff
changeset
|
886 BLOCK_COMMENT("move_arg_slots_down {"); |
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never
parents:
3336
diff
changeset
|
887 assert_different_registers(rbx_top, |
167b70ff3abc
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parents:
3336
diff
changeset
|
888 negative_distance_in_slots.register_or_noreg(), |
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never
parents:
3336
diff
changeset
|
889 rax_temp, rdx_temp); |
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6939861: JVM should handle more conversion operations
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parents:
3336
diff
changeset
|
890 Label L_loop, L_break; |
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parents:
3336
diff
changeset
|
891 Register rax_bottom = rax_temp; |
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parents:
3336
diff
changeset
|
892 if (!bottom_addr.is_same_address(Address(rax_bottom, 0))) |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
893 __ lea(rax_bottom, bottom_addr); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
894 // Detect empty (or broken) loop: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
895 #ifdef ASSERT |
167b70ff3abc
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parents:
3336
diff
changeset
|
896 assert(!negative_distance_in_slots.is_constant() || negative_distance_in_slots.as_constant() < 0, ""); |
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parents:
3336
diff
changeset
|
897 if (VerifyMethodHandles) { |
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never
parents:
3336
diff
changeset
|
898 // Verify that &bottom < &top (non-empty interval) |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
899 Label L_ok, L_bad; |
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parents:
3336
diff
changeset
|
900 if (negative_distance_in_slots.is_register()) { |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
901 __ cmpptr(negative_distance_in_slots.as_register(), (int32_t) 0); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
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|
902 __ jcc(Assembler::greaterEqual, L_bad); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
903 } |
167b70ff3abc
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parents:
3336
diff
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|
904 __ cmpptr(rax_bottom, rbx_top); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
905 __ jcc(Assembler::below, L_ok); |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
906 __ bind(L_bad); |
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never
parents:
3336
diff
changeset
|
907 __ stop("valid bounds (copy down)"); |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
908 __ BIND(L_ok); |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3336
diff
changeset
|
909 } |
167b70ff3abc
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3336
diff
changeset
|
910 #endif |
167b70ff3abc
6939861: JVM should handle more conversion operations
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parents:
3336
diff
changeset
|
911 __ cmpptr(rax_bottom, rbx_top); |
167b70ff3abc
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parents:
3336
diff
changeset
|
912 __ jccb(Assembler::aboveEqual, L_break); |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
913 // work rax up to rbx, copying contiguous data downwards |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
914 // In pseudo-code: |
167b70ff3abc
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parents:
3336
diff
changeset
|
915 // [rax, rbx) = &[bottom, top) |
167b70ff3abc
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3336
diff
changeset
|
916 // while (rax < rbx) *(rax - distance) = *(rax + 0), rax++; |
167b70ff3abc
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parents:
3336
diff
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|
917 __ BIND(L_loop); |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
918 __ movptr(rdx_temp, Address(rax_bottom, 0)); |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
919 __ movptr( Address(rax_bottom, negative_distance_in_slots, Address::times_ptr), rdx_temp); |
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never
parents:
3336
diff
changeset
|
920 __ addptr(rax_bottom, wordSize); |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
921 __ cmpptr(rax_bottom, rbx_top); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
922 __ jcc(Assembler::below, L_loop); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
923 assert(Interpreter::stackElementSize == wordSize, "else change loop"); |
167b70ff3abc
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never
parents:
3336
diff
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|
924 __ bind(L_break); |
167b70ff3abc
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never
parents:
3336
diff
changeset
|
925 BLOCK_COMMENT("} move_arg_slots_down"); |
167b70ff3abc
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parents:
3336
diff
changeset
|
926 } |
167b70ff3abc
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3336
diff
changeset
|
927 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
928 // Copy from a field or array element to a stacked argument slot. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
929 // is_element (ignored) says whether caller is loading an array element instead of an instance field. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
930 void MethodHandles::move_typed_arg(MacroAssembler* _masm, |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
931 BasicType type, bool is_element, |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
932 Address slot_dest, Address value_src, |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
933 Register rbx_temp, Register rdx_temp) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
934 BLOCK_COMMENT(!is_element ? "move_typed_arg {" : "move_typed_arg { (array element)"); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
935 if (type == T_OBJECT || type == T_ARRAY) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
936 __ load_heap_oop(rbx_temp, value_src); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
937 __ movptr(slot_dest, rbx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
938 } else if (type != T_VOID) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
939 int arg_size = type2aelembytes(type); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
940 bool arg_is_signed = is_signed_subword_type(type); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
941 int slot_size = (arg_size > wordSize) ? arg_size : wordSize; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
942 __ load_sized_value( rdx_temp, value_src, arg_size, arg_is_signed, rbx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
943 __ store_sized_value( slot_dest, rdx_temp, slot_size, rbx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
944 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
945 BLOCK_COMMENT("} move_typed_arg"); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
946 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
947 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
948 void MethodHandles::move_return_value(MacroAssembler* _masm, BasicType type, |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
949 Address return_slot) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
950 BLOCK_COMMENT("move_return_value {"); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
951 // Old versions of the JVM must clean the FPU stack after every return. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
952 #ifndef _LP64 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
953 #ifdef COMPILER2 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
954 // The FPU stack is clean if UseSSE >= 2 but must be cleaned in other cases |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
955 if ((type == T_FLOAT && UseSSE < 1) || (type == T_DOUBLE && UseSSE < 2)) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
956 for (int i = 1; i < 8; i++) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
957 __ ffree(i); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
958 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
959 } else if (UseSSE < 2) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
960 __ empty_FPU_stack(); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
961 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
962 #endif //COMPILER2 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
963 #endif //!_LP64 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
964 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
965 // Look at the type and pull the value out of the corresponding register. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
966 if (type == T_VOID) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
967 // nothing to do |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
968 } else if (type == T_OBJECT) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
969 __ movptr(return_slot, rax); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
970 } else if (type == T_INT || is_subword_type(type)) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
971 // write the whole word, even if only 32 bits is significant |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
972 __ movptr(return_slot, rax); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
973 } else if (type == T_LONG) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
974 // store the value by parts |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
975 // Note: We assume longs are continguous (if misaligned) on the interpreter stack. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
976 __ store_sized_value(return_slot, rax, BytesPerLong, rdx); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
977 } else if (NOT_LP64((type == T_FLOAT && UseSSE < 1) || |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
978 (type == T_DOUBLE && UseSSE < 2) ||) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
979 false) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
980 // Use old x86 FPU registers: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
981 if (type == T_FLOAT) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
982 __ fstp_s(return_slot); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
983 else |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
984 __ fstp_d(return_slot); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
985 } else if (type == T_FLOAT) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
986 __ movflt(return_slot, xmm0); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
987 } else if (type == T_DOUBLE) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
988 __ movdbl(return_slot, xmm0); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
989 } else { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
990 ShouldNotReachHere(); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
991 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
992 BLOCK_COMMENT("} move_return_value"); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
993 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
994 |
4824
5dbed2f542ff
7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents:
4818
diff
changeset
|
995 #ifndef PRODUCT |
4818
82e5a84b7436
7120450: complete information dumped by frame_describe
bdelsart
parents:
4807
diff
changeset
|
996 #define DESCRIBE_RICOCHET_OFFSET(rf, name) \ |
82e5a84b7436
7120450: complete information dumped by frame_describe
bdelsart
parents:
4807
diff
changeset
|
997 values.describe(frame_no, (intptr_t *) (((uintptr_t)rf) + MethodHandles::RicochetFrame::name##_offset_in_bytes()), #name) |
82e5a84b7436
7120450: complete information dumped by frame_describe
bdelsart
parents:
4807
diff
changeset
|
998 |
82e5a84b7436
7120450: complete information dumped by frame_describe
bdelsart
parents:
4807
diff
changeset
|
999 void MethodHandles::RicochetFrame::describe(const frame* fr, FrameValues& values, int frame_no) { |
82e5a84b7436
7120450: complete information dumped by frame_describe
bdelsart
parents:
4807
diff
changeset
|
1000 address bp = (address) fr->fp(); |
82e5a84b7436
7120450: complete information dumped by frame_describe
bdelsart
parents:
4807
diff
changeset
|
1001 RicochetFrame* rf = (RicochetFrame*)(bp - sender_link_offset_in_bytes()); |
82e5a84b7436
7120450: complete information dumped by frame_describe
bdelsart
parents:
4807
diff
changeset
|
1002 |
82e5a84b7436
7120450: complete information dumped by frame_describe
bdelsart
parents:
4807
diff
changeset
|
1003 // ricochet slots |
82e5a84b7436
7120450: complete information dumped by frame_describe
bdelsart
parents:
4807
diff
changeset
|
1004 DESCRIBE_RICOCHET_OFFSET(rf, exact_sender_sp); |
82e5a84b7436
7120450: complete information dumped by frame_describe
bdelsart
parents:
4807
diff
changeset
|
1005 DESCRIBE_RICOCHET_OFFSET(rf, conversion); |
82e5a84b7436
7120450: complete information dumped by frame_describe
bdelsart
parents:
4807
diff
changeset
|
1006 DESCRIBE_RICOCHET_OFFSET(rf, saved_args_base); |
82e5a84b7436
7120450: complete information dumped by frame_describe
bdelsart
parents:
4807
diff
changeset
|
1007 DESCRIBE_RICOCHET_OFFSET(rf, saved_args_layout); |
82e5a84b7436
7120450: complete information dumped by frame_describe
bdelsart
parents:
4807
diff
changeset
|
1008 DESCRIBE_RICOCHET_OFFSET(rf, saved_target); |
82e5a84b7436
7120450: complete information dumped by frame_describe
bdelsart
parents:
4807
diff
changeset
|
1009 DESCRIBE_RICOCHET_OFFSET(rf, continuation); |
82e5a84b7436
7120450: complete information dumped by frame_describe
bdelsart
parents:
4807
diff
changeset
|
1010 |
82e5a84b7436
7120450: complete information dumped by frame_describe
bdelsart
parents:
4807
diff
changeset
|
1011 // relevant ricochet targets (in caller frame) |
82e5a84b7436
7120450: complete information dumped by frame_describe
bdelsart
parents:
4807
diff
changeset
|
1012 values.describe(-1, rf->saved_args_base(), err_msg("*saved_args_base for #%d", frame_no)); |
82e5a84b7436
7120450: complete information dumped by frame_describe
bdelsart
parents:
4807
diff
changeset
|
1013 } |
82e5a84b7436
7120450: complete information dumped by frame_describe
bdelsart
parents:
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diff
changeset
|
1014 #endif // ASSERT |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
1015 |
710 | 1016 #ifndef PRODUCT |
1133
aa62b9388fce
6894206: JVM needs a way to traverse method handle structures
twisti
parents:
1108
diff
changeset
|
1017 extern "C" void print_method_handle(oop mh); |
710 | 1018 void trace_method_handle_stub(const char* adaptername, |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
1019 oop mh, |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
1020 intptr_t* saved_regs, |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
1021 intptr_t* entry_sp, |
3336
2e038ad0c1d0
7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents:
2357
diff
changeset
|
1022 intptr_t* saved_sp, |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
1023 intptr_t* saved_bp) { |
710 | 1024 // called as a leaf from native code: do not block the JVM! |
3371
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
1025 bool has_mh = (strstr(adaptername, "return/") == NULL); // return adapters don't have rcx_mh |
4824
5dbed2f542ff
7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents:
4818
diff
changeset
|
1026 |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
1027 intptr_t* last_sp = (intptr_t*) saved_bp[frame::interpreter_frame_last_sp_offset]; |
3371
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
1028 intptr_t* base_sp = last_sp; |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
1029 typedef MethodHandles::RicochetFrame RicochetFrame; |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
1030 RicochetFrame* rfp = (RicochetFrame*)((address)saved_bp - RicochetFrame::sender_link_offset_in_bytes()); |
4807
15d394228cfa
7111138: delete the obsolete flag -XX:+UseRicochetFrames
jrose
parents:
4762
diff
changeset
|
1031 if (Universe::heap()->is_in((address) rfp->saved_args_base())) { |
3371
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
1032 // Probably an interpreter frame. |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
1033 base_sp = (intptr_t*) saved_bp[frame::interpreter_frame_monitor_block_top_offset]; |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
1034 } |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
1035 intptr_t mh_reg = (intptr_t)mh; |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
1036 const char* mh_reg_name = "rcx_mh"; |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
1037 if (!has_mh) mh_reg_name = "rcx"; |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
1038 tty->print_cr("MH %s %s="PTR_FORMAT" sp=("PTR_FORMAT"+"INTX_FORMAT") stack_size="INTX_FORMAT" bp="PTR_FORMAT, |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
1039 adaptername, mh_reg_name, mh_reg, |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
1040 (intptr_t)entry_sp, (intptr_t)(saved_sp - entry_sp), (intptr_t)(base_sp - last_sp), (intptr_t)saved_bp); |
1793
d257356e35f0
6939224: MethodHandle.invokeGeneric needs to perform the correct set of conversions
jrose
parents:
1552
diff
changeset
|
1041 if (Verbose) { |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
1042 tty->print(" reg dump: "); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
1043 int saved_regs_count = (entry_sp-1) - saved_regs; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
1044 // 32 bit: rdi rsi rbp rsp; rbx rdx rcx (*) rax |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
1045 int i; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
1046 for (i = 0; i <= saved_regs_count; i++) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
1047 if (i > 0 && i % 4 == 0 && i != saved_regs_count) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
1048 tty->cr(); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
1049 tty->print(" + dump: "); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
1050 } |
3371
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
1051 tty->print(" %d: "PTR_FORMAT, i, saved_regs[i]); |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
1052 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
1053 tty->cr(); |
3371
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
1054 if (last_sp != saved_sp && last_sp != NULL) |
fabcf26ee72f
6998541: JSR 292 implement missing return-type conversion for OP_RETYPE_RAW
twisti
parents:
3363
diff
changeset
|
1055 tty->print_cr("*** last_sp="PTR_FORMAT, (intptr_t)last_sp); |
4824
5dbed2f542ff
7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents:
4818
diff
changeset
|
1056 |
5dbed2f542ff
7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents:
4818
diff
changeset
|
1057 { |
5dbed2f542ff
7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents:
4818
diff
changeset
|
1058 // dumping last frame with frame::describe |
5dbed2f542ff
7120468: SPARC/x86: use frame::describe to enhance trace_method_handle
bdelsart
parents:
4818
diff
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|
1059 |
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1060 JavaThread* p = JavaThread::active(); |
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1061 |
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1062 ResourceMark rm; |
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1063 PRESERVE_EXCEPTION_MARK; // may not be needed by safer and unexpensive here |
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1064 FrameValues values; |
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1065 |
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1066 // Note: We want to allow trace_method_handle from any call site. |
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1067 // While trace_method_handle creates a frame, it may be entered |
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1068 // without a PC on the stack top (e.g. not just after a call). |
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1069 // Walking that frame could lead to failures due to that invalid PC. |
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1070 // => carefully detect that frame when doing the stack walking |
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1071 |
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1072 // Current C frame |
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1073 frame cur_frame = os::current_frame(); |
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1074 |
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1075 // Robust search of trace_calling_frame (independant of inlining). |
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1076 // Assumes saved_regs comes from a pusha in the trace_calling_frame. |
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1077 assert(cur_frame.sp() < saved_regs, "registers not saved on stack ?"); |
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1078 frame trace_calling_frame = os::get_sender_for_C_frame(&cur_frame); |
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1079 while (trace_calling_frame.fp() < saved_regs) { |
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1080 trace_calling_frame = os::get_sender_for_C_frame(&trace_calling_frame); |
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1081 } |
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1082 |
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1083 // safely create a frame and call frame::describe |
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1084 intptr_t *dump_sp = trace_calling_frame.sender_sp(); |
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1085 intptr_t *dump_fp = trace_calling_frame.link(); |
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1086 |
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1087 bool walkable = has_mh; // whether the traced frame shoud be walkable |
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1088 |
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1089 if (walkable) { |
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1090 // The previous definition of walkable may have to be refined |
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1091 // if new call sites cause the next frame constructor to start |
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1092 // failing. Alternatively, frame constructors could be |
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1093 // modified to support the current or future non walkable |
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1094 // frames (but this is more intrusive and is not considered as |
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1095 // part of this RFE, which will instead use a simpler output). |
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1096 frame dump_frame = frame(dump_sp, dump_fp); |
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1097 dump_frame.describe(values, 1); |
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1098 } else { |
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1099 // Stack may not be walkable (invalid PC above FP): |
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1100 // Add descriptions without building a Java frame to avoid issues |
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1101 values.describe(-1, dump_fp, "fp for #1 <not parsed, cannot trust pc>"); |
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1102 values.describe(-1, dump_sp, "sp for #1"); |
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1103 } |
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1104 |
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1105 // mark saved_sp if seems valid |
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1106 if (has_mh) { |
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1107 if ((saved_sp >= dump_sp - UNREASONABLE_STACK_MOVE) && (saved_sp < dump_fp)) { |
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1108 values.describe(-1, saved_sp, "*saved_sp"); |
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1109 } |
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1110 } |
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1111 |
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1112 tty->print_cr(" stack layout:"); |
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1113 values.print(p); |
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1114 } |
3371
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1115 if (has_mh) |
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1116 print_method_handle(mh); |
1793
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1117 } |
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1118 } |
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1119 |
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1120 // The stub wraps the arguments in a struct on the stack to avoid |
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1121 // dealing with the different calling conventions for passing 6 |
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1122 // arguments. |
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1123 struct MethodHandleStubArguments { |
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1124 const char* adaptername; |
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1125 oopDesc* mh; |
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1126 intptr_t* saved_regs; |
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1127 intptr_t* entry_sp; |
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1128 intptr_t* saved_sp; |
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1129 intptr_t* saved_bp; |
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1130 }; |
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1131 void trace_method_handle_stub_wrapper(MethodHandleStubArguments* args) { |
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1132 trace_method_handle_stub(args->adaptername, |
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1133 args->mh, |
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1134 args->saved_regs, |
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1135 args->entry_sp, |
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1136 args->saved_sp, |
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1137 args->saved_bp); |
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1138 } |
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1139 |
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1140 void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) { |
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1141 if (!TraceMethodHandles) return; |
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1142 BLOCK_COMMENT("trace_method_handle {"); |
4824
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1143 __ enter(); |
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1144 __ andptr(rsp, -16); // align stack if needed for FPU state |
1793
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1145 __ pusha(); |
4824
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1146 __ mov(rbx, rsp); // for retreiving saved_regs |
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1147 // Note: saved_regs must be in the entered frame for the |
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1148 // robust stack walking implemented in trace_method_handle_stub. |
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1149 |
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1150 // save FP result, valid at some call sites (adapter_opt_return_float, ...) |
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1151 __ increment(rsp, -2 * wordSize); |
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1152 if (UseSSE >= 2) { |
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1153 __ movdbl(Address(rsp, 0), xmm0); |
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1154 } else if (UseSSE == 1) { |
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1155 __ movflt(Address(rsp, 0), xmm0); |
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1156 } else { |
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1157 __ fst_d(Address(rsp, 0)); |
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1158 } |
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1159 |
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1160 // incoming state: |
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|
1161 // rcx: method handle |
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1162 // r13 or rsi: saved sp |
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1163 // To avoid calling convention issues, build a record on the stack and pass the pointer to that instead. |
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1164 // Note: fix the increment below if pushing more arguments |
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1165 __ push(rbp); // saved_bp |
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1166 __ push(saved_last_sp_register()); // saved_sp |
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1167 __ push(rbp); // entry_sp (with extra align space) |
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1168 __ push(rbx); // pusha saved_regs |
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1169 __ push(rcx); // mh |
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1170 __ push(rcx); // slot for adaptername |
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1171 __ movptr(Address(rsp, 0), (intptr_t) adaptername); |
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1172 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub_wrapper), rsp); |
4824
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1173 __ increment(rsp, 6 * wordSize); // MethodHandleStubArguments |
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1174 |
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1175 if (UseSSE >= 2) { |
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1176 __ movdbl(xmm0, Address(rsp, 0)); |
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1177 } else if (UseSSE == 1) { |
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1178 __ movflt(xmm0, Address(rsp, 0)); |
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1179 } else { |
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|
1180 __ fld_d(Address(rsp, 0)); |
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1181 } |
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1182 __ increment(rsp, 2 * wordSize); |
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1183 |
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1184 __ popa(); |
4824
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1185 __ leave(); |
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1186 BLOCK_COMMENT("} trace_method_handle"); |
710 | 1187 } |
1188 #endif //PRODUCT | |
1189 | |
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1190 // which conversion op types are implemented here? |
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1191 int MethodHandles::adapter_conversion_ops_supported_mask() { |
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1192 return ((1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_ONLY) |
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1193 |(1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_RAW) |
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1194 |(1<<java_lang_invoke_AdapterMethodHandle::OP_CHECK_CAST) |
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1195 |(1<<java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_PRIM) |
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1196 |(1<<java_lang_invoke_AdapterMethodHandle::OP_REF_TO_PRIM) |
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1197 //OP_PRIM_TO_REF is below... |
2357
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1198 |(1<<java_lang_invoke_AdapterMethodHandle::OP_SWAP_ARGS) |
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1199 |(1<<java_lang_invoke_AdapterMethodHandle::OP_ROT_ARGS) |
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1200 |(1<<java_lang_invoke_AdapterMethodHandle::OP_DUP_ARGS) |
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|
1201 |(1<<java_lang_invoke_AdapterMethodHandle::OP_DROP_ARGS) |
3363
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|
1202 //OP_COLLECT_ARGS is below... |
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|
1203 |(1<<java_lang_invoke_AdapterMethodHandle::OP_SPREAD_ARGS) |
4807
15d394228cfa
7111138: delete the obsolete flag -XX:+UseRicochetFrames
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|
1204 |( |
3363
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1205 java_lang_invoke_MethodTypeForm::vmlayout_offset_in_bytes() <= 0 ? 0 : |
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1206 ((1<<java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_REF) |
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1207 |(1<<java_lang_invoke_AdapterMethodHandle::OP_COLLECT_ARGS) |
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1208 |(1<<java_lang_invoke_AdapterMethodHandle::OP_FOLD_ARGS) |
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1209 )) |
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|
1210 ); |
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1211 } |
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1212 |
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1213 //------------------------------------------------------------------------------ |
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1214 // MethodHandles::generate_method_handle_stub |
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1215 // |
710 | 1216 // Generate an "entry" field for a method handle. |
1217 // This determines how the method handle will respond to calls. | |
2116
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1218 void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) { |
3363
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1219 MethodHandles::EntryKind ek_orig = ek_original_kind(ek); |
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1220 |
710 | 1221 // Here is the register state during an interpreted call, |
1222 // as set up by generate_method_handle_interpreter_entry(): | |
1223 // - rbx: garbage temp (was MethodHandle.invoke methodOop, unused) | |
1224 // - rcx: receiver method handle | |
1225 // - rax: method handle type (only used by the check_mtype entry point) | |
1226 // - rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted) | |
1227 // - rdx: garbage temp, can blow away | |
1228 | |
2088
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1229 const Register rcx_recv = rcx; |
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1230 const Register rax_argslot = rax; |
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1231 const Register rbx_temp = rbx; |
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1232 const Register rdx_temp = rdx; |
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|
1233 const Register rdi_temp = rdi; |
710 | 1234 |
1039
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1235 // This guy is set up by prepare_to_jump_from_interpreted (from interpreted calls) |
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1236 // and gen_c2i_adapter (from compiled calls): |
3363
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1237 const Register saved_last_sp = saved_last_sp_register(); |
2088
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|
1238 |
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|
1239 // Argument registers for _raise_exception. |
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1240 // 32-bit: Pass first two oop/int args in registers ECX and EDX. |
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1241 const Register rarg0_code = LP64_ONLY(j_rarg0) NOT_LP64(rcx); |
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1242 const Register rarg1_actual = LP64_ONLY(j_rarg1) NOT_LP64(rdx); |
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1243 const Register rarg2_required = LP64_ONLY(j_rarg2) NOT_LP64(rdi); |
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1244 assert_different_registers(rarg0_code, rarg1_actual, rarg2_required, saved_last_sp); |
1039
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|
1245 |
2357
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1246 guarantee(java_lang_invoke_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets"); |
710 | 1247 |
1248 // some handy addresses | |
2357
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1249 Address rcx_mh_vmtarget( rcx_recv, java_lang_invoke_MethodHandle::vmtarget_offset_in_bytes() ); |
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1250 Address rcx_dmh_vmindex( rcx_recv, java_lang_invoke_DirectMethodHandle::vmindex_offset_in_bytes() ); |
710 | 1251 |
2357
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1252 Address rcx_bmh_vmargslot( rcx_recv, java_lang_invoke_BoundMethodHandle::vmargslot_offset_in_bytes() ); |
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1253 Address rcx_bmh_argument( rcx_recv, java_lang_invoke_BoundMethodHandle::argument_offset_in_bytes() ); |
710 | 1254 |
2357
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1255 Address rcx_amh_vmargslot( rcx_recv, java_lang_invoke_AdapterMethodHandle::vmargslot_offset_in_bytes() ); |
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1256 Address rcx_amh_argument( rcx_recv, java_lang_invoke_AdapterMethodHandle::argument_offset_in_bytes() ); |
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1257 Address rcx_amh_conversion( rcx_recv, java_lang_invoke_AdapterMethodHandle::conversion_offset_in_bytes() ); |
710 | 1258 Address vmarg; // __ argument_address(vmargslot) |
1259 | |
4762
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7118863: Move sizeof(klassOopDesc) into the *Klass::*_offset_in_bytes() functions
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|
1260 const int java_mirror_offset = in_bytes(Klass::java_mirror_offset()); |
1039
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1261 |
710 | 1262 if (have_entry(ek)) { |
1263 __ nop(); // empty stubs make SG sick | |
1264 return; | |
1265 } | |
1266 | |
3363
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|
1267 #ifdef ASSERT |
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|
1268 __ push((int32_t) 0xEEEEEEEE); |
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|
1269 __ push((int32_t) (intptr_t) entry_name(ek)); |
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|
1270 LP64_ONLY(__ push((int32_t) high((intptr_t) entry_name(ek)))); |
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|
1271 __ push((int32_t) 0x33333333); |
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|
1272 #endif //ASSERT |
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|
1273 |
710 | 1274 address interp_entry = __ pc(); |
1275 | |
1793
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|
1276 trace_method_handle(_masm, entry_name(ek)); |
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|
1277 |
3753
cba7b5c2d53f
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|
1278 BLOCK_COMMENT(err_msg("Entry %s {", entry_name(ek))); |
710 | 1279 |
1280 switch ((int) ek) { | |
1039
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1281 case _raise_exception: |
710 | 1282 { |
2088
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|
1283 // Not a real MH entry, but rather shared code for raising an |
2321
1b4e6a5d98e0
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|
1284 // exception. Since we use the compiled entry, arguments are |
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diff
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|
1285 // expected in compiler argument registers. |
2116
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|
1286 assert(raise_exception_method(), "must be set"); |
2321
1b4e6a5d98e0
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diff
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|
1287 assert(raise_exception_method()->from_compiled_entry(), "method must be linked"); |
710 | 1288 |
3808
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|
1289 const Register rax_pc = rax; |
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|
1290 __ pop(rax_pc); // caller PC |
2088
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|
1291 __ mov(rsp, saved_last_sp); // cut the stack back to where the caller started |
710 | 1292 |
1039
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|
1293 Register rbx_method = rbx_temp; |
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|
1294 __ movptr(rbx_method, ExternalAddress((address) &_raise_exception_method)); |
2088
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|
1295 |
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|
1296 const int jobject_oop_offset = 0; |
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|
1297 __ movptr(rbx_method, Address(rbx_method, jobject_oop_offset)); // dereference the jobject |
3808
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|
1298 |
3848 | 1299 __ movptr(saved_last_sp, rsp); |
3808
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|
1300 __ subptr(rsp, 3 * wordSize); |
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|
1301 __ push(rax_pc); // restore caller PC |
2088
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|
1302 |
3848 | 1303 __ movl (__ argument_address(constant(2)), rarg0_code); |
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|
1304 __ movptr(__ argument_address(constant(1)), rarg1_actual); |
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|
1305 __ movptr(__ argument_address(constant(0)), rarg2_required); |
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|
1306 jump_from_method_handle(_masm, rbx_method, rax); |
710 | 1307 } |
1308 break; | |
1309 | |
1310 case _invokestatic_mh: | |
1311 case _invokespecial_mh: | |
1312 { | |
1313 Register rbx_method = rbx_temp; | |
1846 | 1314 __ load_heap_oop(rbx_method, rcx_mh_vmtarget); // target is a methodOop |
710 | 1315 __ verify_oop(rbx_method); |
1316 // same as TemplateTable::invokestatic or invokespecial, | |
1317 // minus the CP setup and profiling: | |
1318 if (ek == _invokespecial_mh) { | |
1319 // Must load & check the first argument before entering the target method. | |
1320 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
1321 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
1322 __ null_check(rcx_recv); | |
1323 __ verify_oop(rcx_recv); | |
1324 } | |
3808
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|
1325 jump_from_method_handle(_masm, rbx_method, rax); |
710 | 1326 } |
1327 break; | |
1328 | |
1329 case _invokevirtual_mh: | |
1330 { | |
1331 // same as TemplateTable::invokevirtual, | |
1332 // minus the CP setup and profiling: | |
1333 | |
1334 // pick out the vtable index and receiver offset from the MH, | |
1335 // and then we can discard it: | |
1336 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
1337 Register rbx_index = rbx_temp; | |
1338 __ movl(rbx_index, rcx_dmh_vmindex); | |
1339 // Note: The verifier allows us to ignore rcx_mh_vmtarget. | |
1340 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
1341 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes()); | |
1342 | |
1343 // get receiver klass | |
1344 Register rax_klass = rax_argslot; | |
1345 __ load_klass(rax_klass, rcx_recv); | |
1346 __ verify_oop(rax_klass); | |
1347 | |
1348 // get target methodOop & entry point | |
1349 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
1350 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below"); | |
1351 Address vtable_entry_addr(rax_klass, | |
1352 rbx_index, Address::times_ptr, | |
1353 base + vtableEntry::method_offset_in_bytes()); | |
1354 Register rbx_method = rbx_temp; | |
1108 | 1355 __ movptr(rbx_method, vtable_entry_addr); |
710 | 1356 |
1357 __ verify_oop(rbx_method); | |
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1358 jump_from_method_handle(_masm, rbx_method, rax); |
710 | 1359 } |
1360 break; | |
1361 | |
1362 case _invokeinterface_mh: | |
1363 { | |
1364 // same as TemplateTable::invokeinterface, | |
1365 // minus the CP setup and profiling: | |
1366 | |
1367 // pick out the interface and itable index from the MH. | |
1368 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
1369 Register rdx_intf = rdx_temp; | |
1370 Register rbx_index = rbx_temp; | |
1846 | 1371 __ load_heap_oop(rdx_intf, rcx_mh_vmtarget); |
1372 __ movl(rbx_index, rcx_dmh_vmindex); | |
710 | 1373 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); |
1374 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes()); | |
1375 | |
1376 // get receiver klass | |
1377 Register rax_klass = rax_argslot; | |
1378 __ load_klass(rax_klass, rcx_recv); | |
1379 __ verify_oop(rax_klass); | |
1380 | |
1381 Register rbx_method = rbx_index; | |
1382 | |
1383 // get interface klass | |
1384 Label no_such_interface; | |
1385 __ verify_oop(rdx_intf); | |
1386 __ lookup_interface_method(rax_klass, rdx_intf, | |
1387 // note: next two args must be the same: | |
1388 rbx_index, rbx_method, | |
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1389 rdi_temp, |
710 | 1390 no_such_interface); |
1391 | |
1392 __ verify_oop(rbx_method); | |
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1393 jump_from_method_handle(_masm, rbx_method, rax); |
710 | 1394 __ hlt(); |
1395 | |
1396 __ bind(no_such_interface); | |
1397 // Throw an exception. | |
1398 // For historical reasons, it will be IncompatibleClassChangeError. | |
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1399 __ mov(rbx_temp, rcx_recv); // rarg2_required might be RCX |
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1400 assert_different_registers(rarg2_required, rbx_temp); |
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1401 __ movptr(rarg2_required, Address(rdx_intf, java_mirror_offset)); // required interface |
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1402 __ mov( rarg1_actual, rbx_temp); // bad receiver |
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1403 __ movl( rarg0_code, (int) Bytecodes::_invokeinterface); // who is complaining? |
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1404 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 1405 } |
1406 break; | |
1407 | |
1408 case _bound_ref_mh: | |
1409 case _bound_int_mh: | |
1410 case _bound_long_mh: | |
1411 case _bound_ref_direct_mh: | |
1412 case _bound_int_direct_mh: | |
1413 case _bound_long_direct_mh: | |
1414 { | |
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1415 const bool direct_to_method = (ek >= _bound_ref_direct_mh); |
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1416 BasicType arg_type = ek_bound_mh_arg_type(ek); |
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1417 int arg_slots = type2size[arg_type]; |
710 | 1418 |
1419 // make room for the new argument: | |
1420 __ movl(rax_argslot, rcx_bmh_vmargslot); | |
1421 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
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1422 |
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1423 insert_arg_slots(_masm, arg_slots * stack_move_unit(), rax_argslot, rbx_temp, rdx_temp); |
710 | 1424 |
1425 // store bound argument into the new stack slot: | |
1846 | 1426 __ load_heap_oop(rbx_temp, rcx_bmh_argument); |
710 | 1427 if (arg_type == T_OBJECT) { |
1428 __ movptr(Address(rax_argslot, 0), rbx_temp); | |
1429 } else { | |
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1430 Address prim_value_addr(rbx_temp, java_lang_boxing_object::value_offset_in_bytes(arg_type)); |
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1431 move_typed_arg(_masm, arg_type, false, |
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1432 Address(rax_argslot, 0), |
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1433 prim_value_addr, |
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1434 rbx_temp, rdx_temp); |
710 | 1435 } |
1436 | |
1437 if (direct_to_method) { | |
1438 Register rbx_method = rbx_temp; | |
1846 | 1439 __ load_heap_oop(rbx_method, rcx_mh_vmtarget); |
710 | 1440 __ verify_oop(rbx_method); |
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1441 jump_from_method_handle(_masm, rbx_method, rax); |
710 | 1442 } else { |
1846 | 1443 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1444 __ verify_oop(rcx_recv); |
1445 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
1446 } | |
1447 } | |
1448 break; | |
1449 | |
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1450 case _adapter_opt_profiling: |
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1451 if (java_lang_invoke_CountingMethodHandle::vmcount_offset_in_bytes() != 0) { |
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1452 Address rcx_mh_vmcount(rcx_recv, java_lang_invoke_CountingMethodHandle::vmcount_offset_in_bytes()); |
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1453 __ incrementl(rcx_mh_vmcount); |
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1454 } |
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1455 // fall through |
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1456 |
710 | 1457 case _adapter_retype_only: |
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1458 case _adapter_retype_raw: |
710 | 1459 // immediately jump to the next MH layer: |
1846 | 1460 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1461 __ verify_oop(rcx_recv); |
1462 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
1463 // This is OK when all parameter types widen. | |
1464 // It is also OK when a return type narrows. | |
1465 break; | |
1466 | |
1467 case _adapter_check_cast: | |
1468 { | |
1469 // temps: | |
1470 Register rbx_klass = rbx_temp; // interesting AMH data | |
1471 | |
1472 // check a reference argument before jumping to the next layer of MH: | |
1473 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1474 vmarg = __ argument_address(rax_argslot); | |
1475 | |
1476 // What class are we casting to? | |
1846 | 1477 __ load_heap_oop(rbx_klass, rcx_amh_argument); // this is a Class object! |
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1478 load_klass_from_Class(_masm, rbx_klass); |
710 | 1479 |
1480 Label done; | |
1481 __ movptr(rdx_temp, vmarg); | |
1277 | 1482 __ testptr(rdx_temp, rdx_temp); |
1846 | 1483 __ jcc(Assembler::zero, done); // no cast if null |
710 | 1484 __ load_klass(rdx_temp, rdx_temp); |
1485 | |
1486 // live at this point: | |
1487 // - rbx_klass: klass required by the target method | |
1488 // - rdx_temp: argument klass to test | |
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1489 // - rcx_recv: adapter method handle |
710 | 1490 __ check_klass_subtype(rdx_temp, rbx_klass, rax_argslot, done); |
1491 | |
1492 // If we get here, the type check failed! | |
1493 // Call the wrong_method_type stub, passing the failing argument type in rax. | |
1494 Register rax_mtype = rax_argslot; | |
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1495 __ movl(rax_argslot, rcx_amh_vmargslot); // reload argslot field |
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1496 __ movptr(rdx_temp, vmarg); |
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1497 |
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1498 assert_different_registers(rarg2_required, rdx_temp); |
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1499 __ load_heap_oop(rarg2_required, rcx_amh_argument); // required class |
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1500 __ mov( rarg1_actual, rdx_temp); // bad object |
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1501 __ movl( rarg0_code, (int) Bytecodes::_checkcast); // who is complaining? |
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1502 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 1503 |
1504 __ bind(done); | |
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1505 // get the new MH: |
1846 | 1506 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1507 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
1508 } | |
1509 break; | |
1510 | |
1511 case _adapter_prim_to_prim: | |
1512 case _adapter_ref_to_prim: | |
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1513 case _adapter_prim_to_ref: |
710 | 1514 // handled completely by optimized cases |
1515 __ stop("init_AdapterMethodHandle should not issue this"); | |
1516 break; | |
1517 | |
1518 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim | |
1519 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim | |
1520 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim | |
1521 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim | |
1522 { | |
1523 // perform an in-place conversion to int or an int subword | |
1524 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1525 vmarg = __ argument_address(rax_argslot); | |
1526 | |
1527 switch (ek) { | |
1528 case _adapter_opt_i2i: | |
1529 __ movl(rdx_temp, vmarg); | |
1530 break; | |
1531 case _adapter_opt_l2i: | |
1532 { | |
1533 // just delete the extra slot; on a little-endian machine we keep the first | |
1534 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
1535 remove_arg_slots(_masm, -stack_move_unit(), | |
1536 rax_argslot, rbx_temp, rdx_temp); | |
1506 | 1537 vmarg = Address(rax_argslot, -Interpreter::stackElementSize); |
710 | 1538 __ movl(rdx_temp, vmarg); |
1539 } | |
1540 break; | |
1541 case _adapter_opt_unboxi: | |
1542 { | |
1543 // Load the value up from the heap. | |
1544 __ movptr(rdx_temp, vmarg); | |
1545 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT); | |
1546 #ifdef ASSERT | |
1547 for (int bt = T_BOOLEAN; bt < T_INT; bt++) { | |
1548 if (is_subword_type(BasicType(bt))) | |
1549 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), ""); | |
1550 } | |
1551 #endif | |
1552 __ null_check(rdx_temp, value_offset); | |
1553 __ movl(rdx_temp, Address(rdx_temp, value_offset)); | |
1554 // We load this as a word. Because we are little-endian, | |
1555 // the low bits will be correct, but the high bits may need cleaning. | |
1556 // The vminfo will guide us to clean those bits. | |
1557 } | |
1558 break; | |
1559 default: | |
1304 | 1560 ShouldNotReachHere(); |
710 | 1561 } |
1562 | |
1304 | 1563 // Do the requested conversion and store the value. |
710 | 1564 Register rbx_vminfo = rbx_temp; |
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1565 load_conversion_vminfo(_masm, rbx_vminfo, rcx_amh_conversion); |
710 | 1566 |
1567 // get the new MH: | |
1846 | 1568 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1569 // (now we are done with the old MH) |
1570 | |
1571 // original 32-bit vmdata word must be of this form: | |
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1572 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 | |
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1573 __ xchgptr(rcx, rbx_vminfo); // free rcx for shifts |
710 | 1574 __ shll(rdx_temp /*, rcx*/); |
1575 Label zero_extend, done; | |
1576 __ testl(rcx, CONV_VMINFO_SIGN_FLAG); | |
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1577 __ jccb(Assembler::zero, zero_extend); |
710 | 1578 |
1579 // this path is taken for int->byte, int->short | |
1580 __ sarl(rdx_temp /*, rcx*/); | |
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1581 __ jmpb(done); |
710 | 1582 |
1583 __ bind(zero_extend); | |
1584 // this is taken for int->char | |
1585 __ shrl(rdx_temp /*, rcx*/); | |
1586 | |
1587 __ bind(done); | |
1304 | 1588 __ movl(vmarg, rdx_temp); // Store the value. |
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1589 __ xchgptr(rcx, rbx_vminfo); // restore rcx_recv |
710 | 1590 |
1591 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
1592 } | |
1593 break; | |
1594 | |
1595 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim | |
1596 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim | |
1597 { | |
1598 // perform an in-place int-to-long or ref-to-long conversion | |
1599 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1600 | |
1601 // on a little-endian machine we keep the first slot and add another after | |
1602 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
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1603 insert_arg_slots(_masm, stack_move_unit(), |
710 | 1604 rax_argslot, rbx_temp, rdx_temp); |
1506 | 1605 Address vmarg1(rax_argslot, -Interpreter::stackElementSize); |
1606 Address vmarg2 = vmarg1.plus_disp(Interpreter::stackElementSize); | |
710 | 1607 |
1608 switch (ek) { | |
1609 case _adapter_opt_i2l: | |
1610 { | |
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1611 #ifdef _LP64 |
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1612 __ movslq(rdx_temp, vmarg1); // Load sign-extended |
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1613 __ movq(vmarg1, rdx_temp); // Store into first slot |
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1614 #else |
710 | 1615 __ movl(rdx_temp, vmarg1); |
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1616 __ sarl(rdx_temp, BitsPerInt - 1); // __ extend_sign() |
710 | 1617 __ movl(vmarg2, rdx_temp); // store second word |
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1618 #endif |
710 | 1619 } |
1620 break; | |
1621 case _adapter_opt_unboxl: | |
1622 { | |
1623 // Load the value up from the heap. | |
1624 __ movptr(rdx_temp, vmarg1); | |
1625 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG); | |
1626 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), ""); | |
1627 __ null_check(rdx_temp, value_offset); | |
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1628 #ifdef _LP64 |
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1629 __ movq(rbx_temp, Address(rdx_temp, value_offset)); |
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1630 __ movq(vmarg1, rbx_temp); |
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1631 #else |
710 | 1632 __ movl(rbx_temp, Address(rdx_temp, value_offset + 0*BytesPerInt)); |
1633 __ movl(rdx_temp, Address(rdx_temp, value_offset + 1*BytesPerInt)); | |
1634 __ movl(vmarg1, rbx_temp); | |
1635 __ movl(vmarg2, rdx_temp); | |
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1636 #endif |
710 | 1637 } |
1638 break; | |
1639 default: | |
1304 | 1640 ShouldNotReachHere(); |
710 | 1641 } |
1642 | |
1846 | 1643 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1644 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
1645 } | |
1646 break; | |
1647 | |
1648 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim | |
1649 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim | |
1650 { | |
1651 // perform an in-place floating primitive conversion | |
1652 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1653 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
1654 if (ek == _adapter_opt_f2d) { | |
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1655 insert_arg_slots(_masm, stack_move_unit(), |
710 | 1656 rax_argslot, rbx_temp, rdx_temp); |
1657 } | |
1506 | 1658 Address vmarg(rax_argslot, -Interpreter::stackElementSize); |
710 | 1659 |
1660 #ifdef _LP64 | |
1661 if (ek == _adapter_opt_f2d) { | |
1662 __ movflt(xmm0, vmarg); | |
1663 __ cvtss2sd(xmm0, xmm0); | |
1664 __ movdbl(vmarg, xmm0); | |
1665 } else { | |
1666 __ movdbl(xmm0, vmarg); | |
1667 __ cvtsd2ss(xmm0, xmm0); | |
1668 __ movflt(vmarg, xmm0); | |
1669 } | |
1670 #else //_LP64 | |
1671 if (ek == _adapter_opt_f2d) { | |
1672 __ fld_s(vmarg); // load float to ST0 | |
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1673 __ fstp_d(vmarg); // store double |
1304 | 1674 } else { |
710 | 1675 __ fld_d(vmarg); // load double to ST0 |
1676 __ fstp_s(vmarg); // store single | |
1677 } | |
1678 #endif //_LP64 | |
1679 | |
1680 if (ek == _adapter_opt_d2f) { | |
1681 remove_arg_slots(_masm, -stack_move_unit(), | |
1682 rax_argslot, rbx_temp, rdx_temp); | |
1683 } | |
1684 | |
1846 | 1685 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1686 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
1687 } | |
1688 break; | |
1689 | |
1690 case _adapter_swap_args: | |
1691 case _adapter_rot_args: | |
1692 // handled completely by optimized cases | |
1693 __ stop("init_AdapterMethodHandle should not issue this"); | |
1694 break; | |
1695 | |
1696 case _adapter_opt_swap_1: | |
1697 case _adapter_opt_swap_2: | |
1698 case _adapter_opt_rot_1_up: | |
1699 case _adapter_opt_rot_1_down: | |
1700 case _adapter_opt_rot_2_up: | |
1701 case _adapter_opt_rot_2_down: | |
1702 { | |
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1703 int swap_slots = ek_adapter_opt_swap_slots(ek); |
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1704 int rotate = ek_adapter_opt_swap_mode(ek); |
710 | 1705 |
1706 // 'argslot' is the position of the first argument to swap | |
1707 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1708 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
1709 | |
1710 // 'vminfo' is the second | |
1711 Register rbx_destslot = rbx_temp; | |
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1712 load_conversion_vminfo(_masm, rbx_destslot, rcx_amh_conversion); |
710 | 1713 __ lea(rbx_destslot, __ argument_address(rbx_destslot)); |
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1714 if (VerifyMethodHandles) |
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1715 verify_argslot(_masm, rbx_destslot, "swap point must fall within current frame"); |
710 | 1716 |
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1717 assert(Interpreter::stackElementSize == wordSize, "else rethink use of wordSize here"); |
710 | 1718 if (!rotate) { |
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1719 // simple swap |
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1720 for (int i = 0; i < swap_slots; i++) { |
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1721 __ movptr(rdi_temp, Address(rax_argslot, i * wordSize)); |
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1722 __ movptr(rdx_temp, Address(rbx_destslot, i * wordSize)); |
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1723 __ movptr(Address(rax_argslot, i * wordSize), rdx_temp); |
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1724 __ movptr(Address(rbx_destslot, i * wordSize), rdi_temp); |
710 | 1725 } |
1726 } else { | |
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1727 // A rotate is actually pair of moves, with an "odd slot" (or pair) |
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1728 // changing place with a series of other slots. |
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1729 // First, push the "odd slot", which is going to get overwritten |
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1730 for (int i = swap_slots - 1; i >= 0; i--) { |
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1731 // handle one with rdi_temp instead of a push: |
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1732 if (i == 0) __ movptr(rdi_temp, Address(rax_argslot, i * wordSize)); |
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1733 else __ pushptr( Address(rax_argslot, i * wordSize)); |
710 | 1734 } |
1735 if (rotate > 0) { | |
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1736 // Here is rotate > 0: |
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1737 // (low mem) (high mem) |
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1738 // | dest: more_slots... | arg: odd_slot :arg+1 | |
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1739 // => |
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1740 // | dest: odd_slot | dest+1: more_slots... :arg+1 | |
710 | 1741 // work argslot down to destslot, copying contiguous data upwards |
1742 // pseudo-code: | |
1743 // rax = src_addr - swap_bytes | |
1744 // rbx = dest_addr | |
1745 // while (rax >= rbx) *(rax + swap_bytes) = *(rax + 0), rax--; | |
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1746 move_arg_slots_up(_masm, |
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1747 rbx_destslot, |
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1748 Address(rax_argslot, 0), |
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1749 swap_slots, |
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1750 rax_argslot, rdx_temp); |
710 | 1751 } else { |
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1752 // Here is the other direction, rotate < 0: |
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1753 // (low mem) (high mem) |
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1754 // | arg: odd_slot | arg+1: more_slots... :dest+1 | |
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1755 // => |
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1756 // | arg: more_slots... | dest: odd_slot :dest+1 | |
710 | 1757 // work argslot up to destslot, copying contiguous data downwards |
1758 // pseudo-code: | |
1759 // rax = src_addr + swap_bytes | |
1760 // rbx = dest_addr | |
1761 // while (rax <= rbx) *(rax - swap_bytes) = *(rax + 0), rax++; | |
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1762 // dest_slot denotes an exclusive upper limit |
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1763 int limit_bias = OP_ROT_ARGS_DOWN_LIMIT_BIAS; |
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1764 if (limit_bias != 0) |
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1765 __ addptr(rbx_destslot, - limit_bias * wordSize); |
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1766 move_arg_slots_down(_masm, |
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1767 Address(rax_argslot, swap_slots * wordSize), |
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1768 rbx_destslot, |
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1769 -swap_slots, |
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1770 rax_argslot, rdx_temp); |
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1771 __ subptr(rbx_destslot, swap_slots * wordSize); |
710 | 1772 } |
1773 // pop the original first chunk into the destination slot, now free | |
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1774 for (int i = 0; i < swap_slots; i++) { |
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1775 if (i == 0) __ movptr(Address(rbx_destslot, i * wordSize), rdi_temp); |
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1776 else __ popptr(Address(rbx_destslot, i * wordSize)); |
710 | 1777 } |
1778 } | |
1779 | |
1846 | 1780 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1781 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
1782 } | |
1783 break; | |
1784 | |
1785 case _adapter_dup_args: | |
1786 { | |
1787 // 'argslot' is the position of the first argument to duplicate | |
1788 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1789 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
1790 | |
1791 // 'stack_move' is negative number of words to duplicate | |
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1792 Register rdi_stack_move = rdi_temp; |
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1793 load_stack_move(_masm, rdi_stack_move, rcx_recv, true); |
710 | 1794 |
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1795 if (VerifyMethodHandles) { |
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1796 verify_argslots(_masm, rdi_stack_move, rax_argslot, true, |
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1797 "copied argument(s) must fall within current frame"); |
710 | 1798 } |
1799 | |
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1800 // insert location is always the bottom of the argument list: |
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1801 Address insert_location = __ argument_address(constant(0)); |
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1802 int pre_arg_words = insert_location.disp() / wordSize; // return PC is pushed |
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1803 assert(insert_location.base() == rsp, ""); |
710 | 1804 |
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1805 __ negl(rdi_stack_move); |
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1806 push_arg_slots(_masm, rax_argslot, rdi_stack_move, |
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1807 pre_arg_words, rbx_temp, rdx_temp); |
710 | 1808 |
1846 | 1809 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1810 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
1811 } | |
1812 break; | |
1813 | |
1814 case _adapter_drop_args: | |
1815 { | |
1816 // 'argslot' is the position of the first argument to nuke | |
1817 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1818 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
1819 | |
1820 // (must do previous push after argslot address is taken) | |
1821 | |
1822 // 'stack_move' is number of words to drop | |
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1823 Register rdi_stack_move = rdi_temp; |
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1824 load_stack_move(_masm, rdi_stack_move, rcx_recv, false); |
710 | 1825 remove_arg_slots(_masm, rdi_stack_move, |
1826 rax_argslot, rbx_temp, rdx_temp); | |
1827 | |
1846 | 1828 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1829 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
1830 } | |
1831 break; | |
1832 | |
1833 case _adapter_collect_args: | |
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1834 case _adapter_fold_args: |
710 | 1835 case _adapter_spread_args: |
1836 // handled completely by optimized cases | |
1837 __ stop("init_AdapterMethodHandle should not issue this"); | |
1838 break; | |
1839 | |
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1840 case _adapter_opt_collect_ref: |
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1841 case _adapter_opt_collect_int: |
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1842 case _adapter_opt_collect_long: |
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1843 case _adapter_opt_collect_float: |
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1844 case _adapter_opt_collect_double: |
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1845 case _adapter_opt_collect_void: |
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1846 case _adapter_opt_collect_0_ref: |
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1847 case _adapter_opt_collect_1_ref: |
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1848 case _adapter_opt_collect_2_ref: |
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1849 case _adapter_opt_collect_3_ref: |
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1850 case _adapter_opt_collect_4_ref: |
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1851 case _adapter_opt_collect_5_ref: |
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1852 case _adapter_opt_filter_S0_ref: |
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1853 case _adapter_opt_filter_S1_ref: |
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1854 case _adapter_opt_filter_S2_ref: |
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1855 case _adapter_opt_filter_S3_ref: |
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1856 case _adapter_opt_filter_S4_ref: |
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1857 case _adapter_opt_filter_S5_ref: |
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1858 case _adapter_opt_collect_2_S0_ref: |
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1859 case _adapter_opt_collect_2_S1_ref: |
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1860 case _adapter_opt_collect_2_S2_ref: |
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1861 case _adapter_opt_collect_2_S3_ref: |
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1862 case _adapter_opt_collect_2_S4_ref: |
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1863 case _adapter_opt_collect_2_S5_ref: |
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1864 case _adapter_opt_fold_ref: |
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1865 case _adapter_opt_fold_int: |
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1866 case _adapter_opt_fold_long: |
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1867 case _adapter_opt_fold_float: |
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1868 case _adapter_opt_fold_double: |
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1869 case _adapter_opt_fold_void: |
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1870 case _adapter_opt_fold_1_ref: |
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1871 case _adapter_opt_fold_2_ref: |
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1872 case _adapter_opt_fold_3_ref: |
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1873 case _adapter_opt_fold_4_ref: |
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1874 case _adapter_opt_fold_5_ref: |
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1875 { |
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1876 // Given a fresh incoming stack frame, build a new ricochet frame. |
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1877 // On entry, TOS points at a return PC, and RBP is the callers frame ptr. |
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1878 // RSI/R13 has the caller's exact stack pointer, which we must also preserve. |
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1879 // RCX contains an AdapterMethodHandle of the indicated kind. |
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1880 |
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1881 // Relevant AMH fields: |
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1882 // amh.vmargslot: |
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1883 // points to the trailing edge of the arguments |
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1884 // to filter, collect, or fold. For a boxing operation, |
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1885 // it points just after the single primitive value. |
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1886 // amh.argument: |
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1887 // recursively called MH, on |collect| arguments |
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1888 // amh.vmtarget: |
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1889 // final destination MH, on return value, etc. |
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1890 // amh.conversion.dest: |
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1891 // tells what is the type of the return value |
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1892 // (not needed here, since dest is also derived from ek) |
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1893 // amh.conversion.vminfo: |
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1894 // points to the trailing edge of the return value |
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1895 // when the vmtarget is to be called; this is |
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1896 // equal to vmargslot + (retained ? |collect| : 0) |
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1897 |
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1898 // Pass 0 or more argument slots to the recursive target. |
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1899 int collect_count_constant = ek_adapter_opt_collect_count(ek); |
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1900 |
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1901 // The collected arguments are copied from the saved argument list: |
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1902 int collect_slot_constant = ek_adapter_opt_collect_slot(ek); |
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1903 |
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1904 assert(ek_orig == _adapter_collect_args || |
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1905 ek_orig == _adapter_fold_args, ""); |
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1906 bool retain_original_args = (ek_orig == _adapter_fold_args); |
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1907 |
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1908 // The return value is replaced (or inserted) at the 'vminfo' argslot. |
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1909 // Sometimes we can compute this statically. |
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1910 int dest_slot_constant = -1; |
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1911 if (!retain_original_args) |
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1912 dest_slot_constant = collect_slot_constant; |
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1913 else if (collect_slot_constant >= 0 && collect_count_constant >= 0) |
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1914 // We are preserving all the arguments, and the return value is prepended, |
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1915 // so the return slot is to the left (above) the |collect| sequence. |
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1916 dest_slot_constant = collect_slot_constant + collect_count_constant; |
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1917 |
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1918 // Replace all those slots by the result of the recursive call. |
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1919 // The result type can be one of ref, int, long, float, double, void. |
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1920 // In the case of void, nothing is pushed on the stack after return. |
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1921 BasicType dest = ek_adapter_opt_collect_type(ek); |
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1922 assert(dest == type2wfield[dest], "dest is a stack slot type"); |
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1923 int dest_count = type2size[dest]; |
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1924 assert(dest_count == 1 || dest_count == 2 || (dest_count == 0 && dest == T_VOID), "dest has a size"); |
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1925 |
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1926 // Choose a return continuation. |
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1927 EntryKind ek_ret = _adapter_opt_return_any; |
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1928 if (dest != T_CONFLICT && OptimizeMethodHandles) { |
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1929 switch (dest) { |
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1930 case T_INT : ek_ret = _adapter_opt_return_int; break; |
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1931 case T_LONG : ek_ret = _adapter_opt_return_long; break; |
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1932 case T_FLOAT : ek_ret = _adapter_opt_return_float; break; |
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1933 case T_DOUBLE : ek_ret = _adapter_opt_return_double; break; |
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1934 case T_OBJECT : ek_ret = _adapter_opt_return_ref; break; |
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1935 case T_VOID : ek_ret = _adapter_opt_return_void; break; |
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1936 default : ShouldNotReachHere(); |
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1937 } |
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1938 if (dest == T_OBJECT && dest_slot_constant >= 0) { |
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1939 EntryKind ek_try = EntryKind(_adapter_opt_return_S0_ref + dest_slot_constant); |
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1940 if (ek_try <= _adapter_opt_return_LAST && |
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1941 ek_adapter_opt_return_slot(ek_try) == dest_slot_constant) { |
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1942 ek_ret = ek_try; |
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1943 } |
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1944 } |
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1945 assert(ek_adapter_opt_return_type(ek_ret) == dest, ""); |
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1946 } |
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1947 |
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1948 // Already pushed: ... keep1 | collect | keep2 | sender_pc | |
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1949 // push(sender_pc); |
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1950 |
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1951 // Compute argument base: |
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1952 Register rax_argv = rax_argslot; |
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1953 __ lea(rax_argv, __ argument_address(constant(0))); |
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1954 |
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1955 // Push a few extra argument words, if we need them to store the return value. |
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1956 { |
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1957 int extra_slots = 0; |
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1958 if (retain_original_args) { |
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1959 extra_slots = dest_count; |
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1960 } else if (collect_count_constant == -1) { |
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1961 extra_slots = dest_count; // collect_count might be zero; be generous |
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1962 } else if (dest_count > collect_count_constant) { |
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1963 extra_slots = (dest_count - collect_count_constant); |
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1964 } else { |
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1965 // else we know we have enough dead space in |collect| to repurpose for return values |
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1966 } |
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1967 DEBUG_ONLY(extra_slots += 1); |
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1968 if (extra_slots > 0) { |
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1969 __ pop(rbx_temp); // return value |
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1970 __ subptr(rsp, (extra_slots * Interpreter::stackElementSize)); |
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1971 // Push guard word #2 in debug mode. |
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1972 DEBUG_ONLY(__ movptr(Address(rsp, 0), (int32_t) RicochetFrame::MAGIC_NUMBER_2)); |
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1973 __ push(rbx_temp); |
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1974 } |
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1975 } |
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1976 |
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1977 RicochetFrame::enter_ricochet_frame(_masm, rcx_recv, rax_argv, |
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1978 entry(ek_ret)->from_interpreted_entry(), rbx_temp); |
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1979 |
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1980 // Now pushed: ... keep1 | collect | keep2 | RF | |
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1981 // some handy frame slots: |
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1982 Address exact_sender_sp_addr = RicochetFrame::frame_address(RicochetFrame::exact_sender_sp_offset_in_bytes()); |
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1983 Address conversion_addr = RicochetFrame::frame_address(RicochetFrame::conversion_offset_in_bytes()); |
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1984 Address saved_args_base_addr = RicochetFrame::frame_address(RicochetFrame::saved_args_base_offset_in_bytes()); |
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1985 |
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1986 #ifdef ASSERT |
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1987 if (VerifyMethodHandles && dest != T_CONFLICT) { |
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1988 BLOCK_COMMENT("verify AMH.conv.dest"); |
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1989 load_conversion_dest_type(_masm, rbx_temp, conversion_addr); |
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1990 Label L_dest_ok; |
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1991 __ cmpl(rbx_temp, (int) dest); |
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1992 __ jcc(Assembler::equal, L_dest_ok); |
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1993 if (dest == T_INT) { |
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1994 for (int bt = T_BOOLEAN; bt < T_INT; bt++) { |
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1995 if (is_subword_type(BasicType(bt))) { |
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1996 __ cmpl(rbx_temp, (int) bt); |
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1997 __ jcc(Assembler::equal, L_dest_ok); |
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1998 } |
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1999 } |
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2000 } |
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2001 __ stop("bad dest in AMH.conv"); |
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2002 __ BIND(L_dest_ok); |
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2003 } |
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2004 #endif //ASSERT |
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2005 |
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2006 // Find out where the original copy of the recursive argument sequence begins. |
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2007 Register rax_coll = rax_argv; |
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2008 { |
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2009 RegisterOrConstant collect_slot = collect_slot_constant; |
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2010 if (collect_slot_constant == -1) { |
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2011 __ movl(rdi_temp, rcx_amh_vmargslot); |
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2012 collect_slot = rdi_temp; |
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2013 } |
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2014 if (collect_slot_constant != 0) |
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2015 __ lea(rax_coll, Address(rax_argv, collect_slot, Interpreter::stackElementScale())); |
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2016 // rax_coll now points at the trailing edge of |collect| and leading edge of |keep2| |
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2017 } |
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2018 |
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2019 // Replace the old AMH with the recursive MH. (No going back now.) |
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2020 // In the case of a boxing call, the recursive call is to a 'boxer' method, |
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2021 // such as Integer.valueOf or Long.valueOf. In the case of a filter |
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2022 // or collect call, it will take one or more arguments, transform them, |
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2023 // and return some result, to store back into argument_base[vminfo]. |
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2024 __ load_heap_oop(rcx_recv, rcx_amh_argument); |
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2025 if (VerifyMethodHandles) verify_method_handle(_masm, rcx_recv); |
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2026 |
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2027 // Push a space for the recursively called MH first: |
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2028 __ push((int32_t)NULL_WORD); |
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2029 |
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2030 // Calculate |collect|, the number of arguments we are collecting. |
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2031 Register rdi_collect_count = rdi_temp; |
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2032 RegisterOrConstant collect_count; |
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2033 if (collect_count_constant >= 0) { |
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2034 collect_count = collect_count_constant; |
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2035 } else { |
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2036 __ load_method_handle_vmslots(rdi_collect_count, rcx_recv, rdx_temp); |
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2037 collect_count = rdi_collect_count; |
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2038 } |
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2039 #ifdef ASSERT |
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2040 if (VerifyMethodHandles && collect_count_constant >= 0) { |
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2041 __ load_method_handle_vmslots(rbx_temp, rcx_recv, rdx_temp); |
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2042 Label L_count_ok; |
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2043 __ cmpl(rbx_temp, collect_count_constant); |
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2044 __ jcc(Assembler::equal, L_count_ok); |
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2045 __ stop("bad vminfo in AMH.conv"); |
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2046 __ BIND(L_count_ok); |
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2047 } |
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2048 #endif //ASSERT |
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2049 |
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2050 // copy |collect| slots directly to TOS: |
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2051 push_arg_slots(_masm, rax_coll, collect_count, 0, rbx_temp, rdx_temp); |
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2052 // Now pushed: ... keep1 | collect | keep2 | RF... | collect | |
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2053 // rax_coll still points at the trailing edge of |collect| and leading edge of |keep2| |
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2054 |
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2055 // If necessary, adjust the saved arguments to make room for the eventual return value. |
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2056 // Normal adjustment: ... keep1 | +dest+ | -collect- | keep2 | RF... | collect | |
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2057 // If retaining args: ... keep1 | +dest+ | collect | keep2 | RF... | collect | |
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2058 // In the non-retaining case, this might move keep2 either up or down. |
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2059 // We don't have to copy the whole | RF... collect | complex, |
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2060 // but we must adjust RF.saved_args_base. |
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2061 // Also, from now on, we will forget about the original copy of |collect|. |
3363
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2062 // If we are retaining it, we will treat it as part of |keep2|. |
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2063 // For clarity we will define |keep3| = |collect|keep2| or |keep2|. |
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2064 |
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2065 BLOCK_COMMENT("adjust trailing arguments {"); |
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2066 // Compare the sizes of |+dest+| and |-collect-|, which are opposed opening and closing movements. |
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2067 int open_count = dest_count; |
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2068 RegisterOrConstant close_count = collect_count_constant; |
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2069 Register rdi_close_count = rdi_collect_count; |
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2070 if (retain_original_args) { |
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2071 close_count = constant(0); |
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2072 } else if (collect_count_constant == -1) { |
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2073 close_count = rdi_collect_count; |
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2074 } |
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2075 |
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2076 // How many slots need moving? This is simply dest_slot (0 => no |keep3|). |
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2077 RegisterOrConstant keep3_count; |
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2078 Register rsi_keep3_count = rsi; // can repair from RF.exact_sender_sp |
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2079 if (dest_slot_constant >= 0) { |
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2080 keep3_count = dest_slot_constant; |
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2081 } else { |
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2082 load_conversion_vminfo(_masm, rsi_keep3_count, conversion_addr); |
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2083 keep3_count = rsi_keep3_count; |
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2084 } |
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2085 #ifdef ASSERT |
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2086 if (VerifyMethodHandles && dest_slot_constant >= 0) { |
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2087 load_conversion_vminfo(_masm, rbx_temp, conversion_addr); |
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2088 Label L_vminfo_ok; |
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2089 __ cmpl(rbx_temp, dest_slot_constant); |
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2090 __ jcc(Assembler::equal, L_vminfo_ok); |
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2091 __ stop("bad vminfo in AMH.conv"); |
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2092 __ BIND(L_vminfo_ok); |
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2093 } |
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2094 #endif //ASSERT |
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2095 |
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2096 // tasks remaining: |
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2097 bool move_keep3 = (!keep3_count.is_constant() || keep3_count.as_constant() != 0); |
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2098 bool stomp_dest = (NOT_DEBUG(dest == T_OBJECT) DEBUG_ONLY(dest_count != 0)); |
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2099 bool fix_arg_base = (!close_count.is_constant() || open_count != close_count.as_constant()); |
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|
2100 |
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2101 if (stomp_dest | fix_arg_base) { |
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2102 // we will probably need an updated rax_argv value |
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2103 if (collect_slot_constant >= 0) { |
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2104 // rax_coll already holds the leading edge of |keep2|, so tweak it |
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|
2105 assert(rax_coll == rax_argv, "elided a move"); |
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2106 if (collect_slot_constant != 0) |
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2107 __ subptr(rax_argv, collect_slot_constant * Interpreter::stackElementSize); |
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2108 } else { |
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2109 // Just reload from RF.saved_args_base. |
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2110 __ movptr(rax_argv, saved_args_base_addr); |
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|
2111 } |
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2112 } |
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2113 |
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2114 // Old and new argument locations (based at slot 0). |
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2115 // Net shift (&new_argv - &old_argv) is (close_count - open_count). |
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2116 bool zero_open_count = (open_count == 0); // remember this bit of info |
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2117 if (move_keep3 && fix_arg_base) { |
3753
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2118 // It will be easier to have everything in one register: |
3363
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2119 if (close_count.is_register()) { |
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2120 // Deduct open_count from close_count register to get a clean +/- value. |
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2121 __ subptr(close_count.as_register(), open_count); |
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2122 } else { |
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2123 close_count = close_count.as_constant() - open_count; |
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2124 } |
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2125 open_count = 0; |
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2126 } |
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2127 Address old_argv(rax_argv, 0); |
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2128 Address new_argv(rax_argv, close_count, Interpreter::stackElementScale(), |
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2129 - open_count * Interpreter::stackElementSize); |
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2130 |
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2131 // First decide if any actual data are to be moved. |
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2132 // We can skip if (a) |keep3| is empty, or (b) the argument list size didn't change. |
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2133 // (As it happens, all movements involve an argument list size change.) |
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2134 |
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2135 // If there are variable parameters, use dynamic checks to skip around the whole mess. |
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|
2136 Label L_done; |
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2137 if (!keep3_count.is_constant()) { |
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2138 __ testl(keep3_count.as_register(), keep3_count.as_register()); |
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2139 __ jcc(Assembler::zero, L_done); |
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|
2140 } |
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2141 if (!close_count.is_constant()) { |
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2142 __ cmpl(close_count.as_register(), open_count); |
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2143 __ jcc(Assembler::equal, L_done); |
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|
2144 } |
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|
2145 |
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2146 if (move_keep3 && fix_arg_base) { |
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2147 bool emit_move_down = false, emit_move_up = false, emit_guard = false; |
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2148 if (!close_count.is_constant()) { |
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2149 emit_move_down = emit_guard = !zero_open_count; |
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|
2150 emit_move_up = true; |
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2151 } else if (open_count != close_count.as_constant()) { |
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2152 emit_move_down = (open_count > close_count.as_constant()); |
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2153 emit_move_up = !emit_move_down; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2154 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2155 Label L_move_up; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2156 if (emit_guard) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2157 __ cmpl(close_count.as_register(), open_count); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2158 __ jcc(Assembler::greater, L_move_up); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2159 } |
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 (emit_move_down) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2162 // Move arguments down if |+dest+| > |-collect-| |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2163 // (This is rare, except when arguments are retained.) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2164 // This opens space for the return value. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2165 if (keep3_count.is_constant()) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2166 for (int i = 0; i < keep3_count.as_constant(); i++) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2167 __ movptr(rdx_temp, old_argv.plus_disp(i * Interpreter::stackElementSize)); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2168 __ movptr( new_argv.plus_disp(i * Interpreter::stackElementSize), rdx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2169 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2170 } else { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2171 Register rbx_argv_top = rbx_temp; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2172 __ 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
|
2173 move_arg_slots_down(_masm, |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2174 old_argv, // beginning of old argv |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2175 rbx_argv_top, // end of old argv |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2176 close_count, // distance to move down (must be negative) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2177 rax_argv, rdx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2178 // 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
|
2179 __ movptr(rax_argv, saved_args_base_addr); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2180 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2181 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2182 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2183 if (emit_guard) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2184 __ jmp(L_done); // assumes emit_move_up is true also |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2185 __ BIND(L_move_up); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2186 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2187 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2188 if (emit_move_up) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2189 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2190 // Move arguments up if |+dest+| < |-collect-| |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2191 // (This is usual, except when |keep3| is empty.) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2192 // 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
|
2193 if (keep3_count.is_constant()) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2194 for (int i = keep3_count.as_constant() - 1; i >= 0; i--) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2195 __ movptr(rdx_temp, old_argv.plus_disp(i * Interpreter::stackElementSize)); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2196 __ movptr( new_argv.plus_disp(i * Interpreter::stackElementSize), rdx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2197 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2198 } else { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2199 Address argv_top = old_argv.plus_disp(keep3_count, Interpreter::stackElementScale()); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2200 move_arg_slots_up(_masm, |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2201 rax_argv, // beginning of old argv |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2202 argv_top, // end of old argv |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2203 close_count, // distance to move up (must be positive) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2204 rbx_temp, rdx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2205 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2206 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2207 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2208 __ BIND(L_done); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2209 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2210 if (fix_arg_base) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2211 // adjust RF.saved_args_base by adding (close_count - open_count) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2212 if (!new_argv.is_same_address(Address(rax_argv, 0))) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2213 __ lea(rax_argv, new_argv); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2214 __ movptr(saved_args_base_addr, rax_argv); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2215 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2216 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2217 if (stomp_dest) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2218 // Stomp the return slot, so it doesn't hold garbage. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2219 // This isn't strictly necessary, but it may help detect bugs. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2220 int forty_two = RicochetFrame::RETURN_VALUE_PLACEHOLDER; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2221 __ movptr(Address(rax_argv, keep3_count, Address::times_ptr), |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2222 (int32_t) forty_two); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2223 // uses rsi_keep3_count |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2224 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2225 BLOCK_COMMENT("} adjust trailing arguments"); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2226 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2227 BLOCK_COMMENT("do_recursive_call"); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2228 __ mov(saved_last_sp, rsp); // set rsi/r13 for callee |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2229 __ pushptr(ExternalAddress(SharedRuntime::ricochet_blob()->bounce_addr()).addr()); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2230 // The globally unique bounce address has two purposes: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2231 // 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
|
2232 // 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
|
2233 // to the return handler. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2234 // 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
|
2235 // 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
|
2236 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2237 // State during recursive call: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2238 // ... keep1 | dest | dest=42 | keep3 | RF... | collect | bounce_pc | |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2239 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2240 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2241 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2242 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2243 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2244 case _adapter_opt_return_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2245 case _adapter_opt_return_int: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2246 case _adapter_opt_return_long: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2247 case _adapter_opt_return_float: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2248 case _adapter_opt_return_double: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2249 case _adapter_opt_return_void: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2250 case _adapter_opt_return_S0_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2251 case _adapter_opt_return_S1_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2252 case _adapter_opt_return_S2_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2253 case _adapter_opt_return_S3_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2254 case _adapter_opt_return_S4_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2255 case _adapter_opt_return_S5_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2256 { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2257 BasicType dest_type_constant = ek_adapter_opt_return_type(ek); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2258 int dest_slot_constant = ek_adapter_opt_return_slot(ek); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2259 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2260 if (VerifyMethodHandles) RicochetFrame::verify_clean(_masm); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2261 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2262 if (dest_slot_constant == -1) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2263 // The current stub is a general handler for this dest_type. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2264 // It can be called from _adapter_opt_return_any below. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2265 // Stash the address in a little table. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2266 assert((dest_type_constant & CONV_TYPE_MASK) == dest_type_constant, "oob"); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2267 address return_handler = __ pc(); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2268 _adapter_return_handlers[dest_type_constant] = return_handler; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2269 if (dest_type_constant == T_INT) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2270 // do the subword types too |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2271 for (int bt = T_BOOLEAN; bt < T_INT; bt++) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2272 if (is_subword_type(BasicType(bt)) && |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2273 _adapter_return_handlers[bt] == NULL) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2274 _adapter_return_handlers[bt] = return_handler; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2275 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2276 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2277 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2278 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2279 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2280 Register rbx_arg_base = rbx_temp; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2281 assert_different_registers(rax, rdx, // possibly live return value registers |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2282 rdi_temp, rbx_arg_base); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2283 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2284 Address conversion_addr = RicochetFrame::frame_address(RicochetFrame::conversion_offset_in_bytes()); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2285 Address saved_args_base_addr = RicochetFrame::frame_address(RicochetFrame::saved_args_base_offset_in_bytes()); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2286 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2287 __ movptr(rbx_arg_base, saved_args_base_addr); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2288 RegisterOrConstant dest_slot = dest_slot_constant; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2289 if (dest_slot_constant == -1) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2290 load_conversion_vminfo(_masm, rdi_temp, conversion_addr); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2291 dest_slot = rdi_temp; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2292 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2293 // Store the result back into the argslot. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
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|
2294 // This code uses the interpreter calling sequence, in which the return value |
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|
2295 // is usually left in the TOS register, as defined by InterpreterMacroAssembler::pop. |
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|
2296 // There are certain irregularities with floating point values, which can be seen |
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|
2297 // in TemplateInterpreterGenerator::generate_return_entry_for. |
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|
2298 move_return_value(_masm, dest_type_constant, Address(rbx_arg_base, dest_slot, Interpreter::stackElementScale())); |
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|
2299 |
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|
2300 RicochetFrame::leave_ricochet_frame(_masm, rcx_recv, rbx_arg_base, rdx_temp); |
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|
2301 __ push(rdx_temp); // repush the return PC |
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|
2302 |
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|
2303 // Load the final target and go. |
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|
2304 if (VerifyMethodHandles) verify_method_handle(_masm, rcx_recv); |
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|
2305 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
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|
2306 __ hlt(); // -------------------- |
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|
2307 break; |
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|
2308 } |
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|
2309 |
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|
2310 case _adapter_opt_return_any: |
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|
2311 { |
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2312 if (VerifyMethodHandles) RicochetFrame::verify_clean(_masm); |
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|
2313 Register rdi_conv = rdi_temp; |
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|
2314 assert_different_registers(rax, rdx, // possibly live return value registers |
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|
2315 rdi_conv, rbx_temp); |
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|
2316 |
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|
2317 Address conversion_addr = RicochetFrame::frame_address(RicochetFrame::conversion_offset_in_bytes()); |
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|
2318 load_conversion_dest_type(_masm, rdi_conv, conversion_addr); |
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|
2319 __ lea(rbx_temp, ExternalAddress((address) &_adapter_return_handlers[0])); |
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2320 __ movptr(rbx_temp, Address(rbx_temp, rdi_conv, Address::times_ptr)); |
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|
2321 |
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|
2322 #ifdef ASSERT |
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|
2323 { Label L_badconv; |
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|
2324 __ testptr(rbx_temp, rbx_temp); |
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|
2325 __ jccb(Assembler::zero, L_badconv); |
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|
2326 __ jmp(rbx_temp); |
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|
2327 __ bind(L_badconv); |
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|
2328 __ stop("bad method handle return"); |
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|
2329 } |
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|
2330 #else //ASSERT |
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|
2331 __ jmp(rbx_temp); |
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|
2332 #endif //ASSERT |
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|
2333 break; |
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|
2334 } |
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|
2335 |
710 | 2336 case _adapter_opt_spread_0: |
3363
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|
2337 case _adapter_opt_spread_1_ref: |
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|
2338 case _adapter_opt_spread_2_ref: |
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|
2339 case _adapter_opt_spread_3_ref: |
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|
2340 case _adapter_opt_spread_4_ref: |
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|
2341 case _adapter_opt_spread_5_ref: |
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|
2342 case _adapter_opt_spread_ref: |
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|
2343 case _adapter_opt_spread_byte: |
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|
2344 case _adapter_opt_spread_char: |
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|
2345 case _adapter_opt_spread_short: |
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|
2346 case _adapter_opt_spread_int: |
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|
2347 case _adapter_opt_spread_long: |
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|
2348 case _adapter_opt_spread_float: |
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|
2349 case _adapter_opt_spread_double: |
710 | 2350 { |
2351 // spread an array out into a group of arguments | |
3363
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|
2352 int length_constant = ek_adapter_opt_spread_count(ek); |
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|
2353 bool length_can_be_zero = (length_constant == 0); |
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|
2354 if (length_constant < 0) { |
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|
2355 // some adapters with variable length must handle the zero case |
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|
2356 if (!OptimizeMethodHandles || |
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|
2357 ek_adapter_opt_spread_type(ek) != T_OBJECT) |
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|
2358 length_can_be_zero = true; |
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|
2359 } |
710 | 2360 |
2361 // find the address of the array argument | |
2362 __ movl(rax_argslot, rcx_amh_vmargslot); | |
2363 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
2364 | |
3363
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|
2365 // grab another temp |
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|
2366 Register rsi_temp = rsi; |
710 | 2367 |
2368 // arx_argslot points both to the array and to the first output arg | |
2369 vmarg = Address(rax_argslot, 0); | |
2370 | |
2371 // Get the array value. | |
4874
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|
2372 Register rdi_array = rdi_temp; |
710 | 2373 Register rdx_array_klass = rdx_temp; |
3363
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|
2374 BasicType elem_type = ek_adapter_opt_spread_type(ek); |
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|
2375 int elem_slots = type2size[elem_type]; // 1 or 2 |
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|
2376 int array_slots = 1; // array is always a T_OBJECT |
710 | 2377 int length_offset = arrayOopDesc::length_offset_in_bytes(); |
2378 int elem0_offset = arrayOopDesc::base_offset_in_bytes(elem_type); | |
4874
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|
2379 __ movptr(rdi_array, vmarg); |
3363
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|
2380 |
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|
2381 Label L_array_is_empty, L_insert_arg_space, L_copy_args, L_args_done; |
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changeset
|
2382 if (length_can_be_zero) { |
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diff
changeset
|
2383 // handle the null pointer case, if zero is allowed |
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|
2384 Label L_skip; |
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|
2385 if (length_constant < 0) { |
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|
2386 load_conversion_vminfo(_masm, rbx_temp, rcx_amh_conversion); |
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|
2387 __ testl(rbx_temp, rbx_temp); |
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|
2388 __ jcc(Assembler::notZero, L_skip); |
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|
2389 } |
4874
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|
2390 __ testptr(rdi_array, rdi_array); |
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|
2391 __ jcc(Assembler::notZero, L_skip); |
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|
2392 |
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|
2393 // If 'rsi' contains the 'saved_last_sp' (this is only the |
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|
2394 // case in a 32-bit version of the VM) we have to save 'rsi' |
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|
2395 // on the stack because later on (at 'L_array_is_empty') 'rsi' |
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|
2396 // will be overwritten. |
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|
2397 { if (rsi_temp == saved_last_sp) __ push(saved_last_sp); } |
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|
2398 // Also prepare a handy macro which restores 'rsi' if required. |
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|
2399 #define UNPUSH_RSI \ |
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|
2400 { if (rsi_temp == saved_last_sp) __ pop(saved_last_sp); } |
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|
2401 |
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|
2402 __ jmp(L_array_is_empty); |
3363
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|
2403 __ bind(L_skip); |
710 | 2404 } |
4874
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|
2405 __ null_check(rdi_array, oopDesc::klass_offset_in_bytes()); |
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|
2406 __ load_klass(rdx_array_klass, rdi_array); |
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|
2407 |
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|
2408 // Save 'rsi' if required (see comment above). Do this only |
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|
2409 // after the null check such that the exception handler which is |
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|
2410 // called in the case of a null pointer exception will not be |
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|
2411 // confused by the extra value on the stack (it expects the |
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|
2412 // return pointer on top of the stack) |
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|
2413 { if (rsi_temp == saved_last_sp) __ push(saved_last_sp); } |
710 | 2414 |
2415 // Check the array type. | |
2416 Register rbx_klass = rbx_temp; | |
1846 | 2417 __ load_heap_oop(rbx_klass, rcx_amh_argument); // this is a Class object! |
3363
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diff
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|
2418 load_klass_from_Class(_masm, rbx_klass); |
710 | 2419 |
2420 Label ok_array_klass, bad_array_klass, bad_array_length; | |
4874
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|
2421 __ check_klass_subtype(rdx_array_klass, rbx_klass, rsi_temp, ok_array_klass); |
710 | 2422 // If we get here, the type check failed! |
2423 __ jmp(bad_array_klass); | |
3363
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|
2424 __ BIND(ok_array_klass); |
710 | 2425 |
2426 // Check length. | |
2427 if (length_constant >= 0) { | |
4874
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|
2428 __ cmpl(Address(rdi_array, length_offset), length_constant); |
710 | 2429 } else { |
2430 Register rbx_vminfo = rbx_temp; | |
3363
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|
2431 load_conversion_vminfo(_masm, rbx_vminfo, rcx_amh_conversion); |
4874
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|
2432 __ cmpl(rbx_vminfo, Address(rdi_array, length_offset)); |
710 | 2433 } |
2434 __ jcc(Assembler::notEqual, bad_array_length); | |
2435 | |
2436 Register rdx_argslot_limit = rdx_temp; | |
2437 | |
2438 // Array length checks out. Now insert any required stack slots. | |
2439 if (length_constant == -1) { | |
2440 // Form a pointer to the end of the affected region. | |
1506 | 2441 __ lea(rdx_argslot_limit, Address(rax_argslot, Interpreter::stackElementSize)); |
710 | 2442 // 'stack_move' is negative number of words to insert |
3363
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|
2443 // This number already accounts for elem_slots. |
4874
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|
2444 Register rsi_stack_move = rsi_temp; |
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|
2445 load_stack_move(_masm, rsi_stack_move, rcx_recv, true); |
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|
2446 __ cmpptr(rsi_stack_move, 0); |
3363
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diff
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|
2447 assert(stack_move_unit() < 0, "else change this comparison"); |
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diff
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|
2448 __ jcc(Assembler::less, L_insert_arg_space); |
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diff
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|
2449 __ jcc(Assembler::equal, L_copy_args); |
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diff
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|
2450 // single argument case, with no array movement |
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|
2451 __ BIND(L_array_is_empty); |
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|
2452 remove_arg_slots(_masm, -stack_move_unit() * array_slots, |
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2453 rax_argslot, rbx_temp, rdx_temp); |
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2454 __ jmp(L_args_done); // no spreading to do |
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2455 __ BIND(L_insert_arg_space); |
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2456 // come here in the usual case, stack_move < 0 (2 or more spread arguments) |
4874
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2457 Register rdi_temp = rdi_array; // spill this |
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2458 insert_arg_slots(_masm, rsi_stack_move, |
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2459 rax_argslot, rbx_temp, rdi_temp); |
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2460 // reload the array since rsi was killed |
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2461 // reload from rdx_argslot_limit since rax_argslot is now decremented |
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2462 __ movptr(rdi_array, Address(rdx_argslot_limit, -Interpreter::stackElementSize)); |
3363
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2463 } else if (length_constant >= 1) { |
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2464 int new_slots = (length_constant * elem_slots) - array_slots; |
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2465 insert_arg_slots(_masm, new_slots * stack_move_unit(), |
710 | 2466 rax_argslot, rbx_temp, rdx_temp); |
2467 } else if (length_constant == 0) { | |
3363
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2468 __ BIND(L_array_is_empty); |
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2469 remove_arg_slots(_masm, -stack_move_unit() * array_slots, |
710 | 2470 rax_argslot, rbx_temp, rdx_temp); |
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2471 } else { |
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2472 ShouldNotReachHere(); |
710 | 2473 } |
2474 | |
2475 // Copy from the array to the new slots. | |
2476 // Note: Stack change code preserves integrity of rax_argslot pointer. | |
2477 // So even after slot insertions, rax_argslot still points to first argument. | |
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2478 // Beware: Arguments that are shallow on the stack are deep in the array, |
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2479 // and vice versa. So a downward-growing stack (the usual) has to be copied |
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2480 // elementwise in reverse order from the source array. |
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2481 __ BIND(L_copy_args); |
710 | 2482 if (length_constant == -1) { |
2483 // [rax_argslot, rdx_argslot_limit) is the area we are inserting into. | |
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2484 // Array element [0] goes at rdx_argslot_limit[-wordSize]. |
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2485 Register rdi_source = rdi_array; |
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2486 __ lea(rdi_source, Address(rdi_array, elem0_offset)); |
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2487 Register rdx_fill_ptr = rdx_argslot_limit; |
710 | 2488 Label loop; |
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2489 __ BIND(loop); |
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2490 __ addptr(rdx_fill_ptr, -Interpreter::stackElementSize * elem_slots); |
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2491 move_typed_arg(_masm, elem_type, true, |
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2492 Address(rdx_fill_ptr, 0), Address(rdi_source, 0), |
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2493 rbx_temp, rsi_temp); |
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2494 __ addptr(rdi_source, type2aelembytes(elem_type)); |
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2495 __ cmpptr(rdx_fill_ptr, rax_argslot); |
3371
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|
2496 __ jcc(Assembler::above, loop); |
710 | 2497 } else if (length_constant == 0) { |
2498 // nothing to copy | |
2499 } else { | |
2500 int elem_offset = elem0_offset; | |
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2501 int slot_offset = length_constant * Interpreter::stackElementSize; |
710 | 2502 for (int index = 0; index < length_constant; index++) { |
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2503 slot_offset -= Interpreter::stackElementSize * elem_slots; // fill backward |
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2504 move_typed_arg(_masm, elem_type, true, |
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2505 Address(rax_argslot, slot_offset), Address(rdi_array, elem_offset), |
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2506 rbx_temp, rsi_temp); |
710 | 2507 elem_offset += type2aelembytes(elem_type); |
2508 } | |
2509 } | |
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2510 __ BIND(L_args_done); |
710 | 2511 |
2512 // Arguments are spread. Move to next method handle. | |
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2513 UNPUSH_RSI; |
1846 | 2514 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 2515 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
2516 | |
2517 __ bind(bad_array_klass); | |
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2518 UNPUSH_RSI; |
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2519 assert(!vmarg.uses(rarg2_required), "must be different registers"); |
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2520 __ load_heap_oop( rarg2_required, Address(rdx_array_klass, java_mirror_offset)); // required type |
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2521 __ movptr( rarg1_actual, vmarg); // bad array |
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2522 __ movl( rarg0_code, (int) Bytecodes::_aaload); // who is complaining? |
1039
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2523 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 2524 |
2525 __ bind(bad_array_length); | |
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|
2526 UNPUSH_RSI; |
2088
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|
2527 assert(!vmarg.uses(rarg2_required), "must be different registers"); |
3363
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|
2528 __ mov( rarg2_required, rcx_recv); // AMH requiring a certain length |
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|
2529 __ movptr( rarg1_actual, vmarg); // bad array |
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|
2530 __ movl( rarg0_code, (int) Bytecodes::_arraylength); // who is complaining? |
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|
2531 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
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|
2532 #undef UNPUSH_RSI |
710 | 2533 |
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|
2534 break; |
710 | 2535 } |
2536 | |
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|
2537 default: |
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|
2538 // do not require all platforms to recognize all adapter types |
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|
2539 __ nop(); |
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|
2540 return; |
710 | 2541 } |
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3388
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|
2542 BLOCK_COMMENT(err_msg("} Entry %s", entry_name(ek))); |
710 | 2543 __ hlt(); |
2544 | |
2545 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry); | |
2546 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
2547 | |
2548 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie)); | |
2549 } |