Mercurial > hg > truffle
annotate src/cpu/x86/vm/methodHandles_x86.cpp @ 3719:5140bf905747
Removed mx/env from revision control.
author | Doug Simon <doug.simon@oracle.com> |
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date | Fri, 16 Dec 2011 13:37:14 +0100 |
parents | 38fa55e5e792 |
children | 341a57af9b0a |
rev | line source |
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710 | 1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
710 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
710 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "interpreter/interpreter.hpp" | |
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27 #include "interpreter/interpreterRuntime.hpp" |
1972 | 28 #include "memory/allocation.inline.hpp" |
29 #include "prims/methodHandles.hpp" | |
710 | 30 |
31 #define __ _masm-> | |
32 | |
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33 #ifdef PRODUCT |
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34 #define BLOCK_COMMENT(str) /* nothing */ |
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35 #else |
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36 #define BLOCK_COMMENT(str) __ block_comment(str) |
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37 #endif |
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38 |
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39 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") |
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40 |
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41 // Workaround for C++ overloading nastiness on '0' for RegisterOrConstant. |
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42 static RegisterOrConstant constant(int value) { |
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43 return RegisterOrConstant(value); |
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44 } |
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45 |
710 | 46 address MethodHandleEntry::start_compiled_entry(MacroAssembler* _masm, |
47 address interpreted_entry) { | |
48 // Just before the actual machine code entry point, allocate space | |
49 // for a MethodHandleEntry::Data record, so that we can manage everything | |
50 // from one base pointer. | |
51 __ align(wordSize); | |
52 address target = __ pc() + sizeof(Data); | |
53 while (__ pc() < target) { | |
54 __ nop(); | |
55 __ align(wordSize); | |
56 } | |
57 | |
58 MethodHandleEntry* me = (MethodHandleEntry*) __ pc(); | |
59 me->set_end_address(__ pc()); // set a temporary end_address | |
60 me->set_from_interpreted_entry(interpreted_entry); | |
61 me->set_type_checking_entry(NULL); | |
62 | |
63 return (address) me; | |
64 } | |
65 | |
66 MethodHandleEntry* MethodHandleEntry::finish_compiled_entry(MacroAssembler* _masm, | |
67 address start_addr) { | |
68 MethodHandleEntry* me = (MethodHandleEntry*) start_addr; | |
69 assert(me->end_address() == start_addr, "valid ME"); | |
70 | |
71 // Fill in the real end_address: | |
72 __ align(wordSize); | |
73 me->set_end_address(__ pc()); | |
74 | |
75 return me; | |
76 } | |
77 | |
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78 // stack walking support |
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79 |
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80 frame MethodHandles::ricochet_frame_sender(const frame& fr, RegisterMap *map) { |
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81 RicochetFrame* f = RicochetFrame::from_frame(fr); |
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82 if (map->update_map()) |
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83 frame::update_map_with_saved_link(map, &f->_sender_link); |
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84 return frame(f->extended_sender_sp(), f->exact_sender_sp(), f->sender_link(), f->sender_pc()); |
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85 } |
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86 |
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87 void MethodHandles::ricochet_frame_oops_do(const frame& fr, OopClosure* blk, const RegisterMap* reg_map) { |
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88 RicochetFrame* f = RicochetFrame::from_frame(fr); |
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89 |
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90 // pick up the argument type descriptor: |
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91 Thread* thread = Thread::current(); |
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92 Handle cookie(thread, f->compute_saved_args_layout(true, true)); |
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93 |
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94 // process fixed part |
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95 blk->do_oop((oop*)f->saved_target_addr()); |
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96 blk->do_oop((oop*)f->saved_args_layout_addr()); |
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97 |
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98 // process variable arguments: |
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99 if (cookie.is_null()) return; // no arguments to describe |
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100 |
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101 // the cookie is actually the invokeExact method for my target |
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102 // his argument signature is what I'm interested in |
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103 assert(cookie->is_method(), ""); |
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104 methodHandle invoker(thread, methodOop(cookie())); |
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105 assert(invoker->name() == vmSymbols::invokeExact_name(), "must be this kind of method"); |
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106 assert(!invoker->is_static(), "must have MH argument"); |
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107 int slot_count = invoker->size_of_parameters(); |
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108 assert(slot_count >= 1, "must include 'this'"); |
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109 intptr_t* base = f->saved_args_base(); |
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110 intptr_t* retval = NULL; |
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111 if (f->has_return_value_slot()) |
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112 retval = f->return_value_slot_addr(); |
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113 int slot_num = slot_count; |
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114 intptr_t* loc = &base[slot_num -= 1]; |
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115 //blk->do_oop((oop*) loc); // original target, which is irrelevant |
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116 int arg_num = 0; |
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117 for (SignatureStream ss(invoker->signature()); !ss.is_done(); ss.next()) { |
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118 if (ss.at_return_type()) continue; |
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119 BasicType ptype = ss.type(); |
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120 if (ptype == T_ARRAY) ptype = T_OBJECT; // fold all refs to T_OBJECT |
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121 assert(ptype >= T_BOOLEAN && ptype <= T_OBJECT, "not array or void"); |
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122 loc = &base[slot_num -= type2size[ptype]]; |
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123 bool is_oop = (ptype == T_OBJECT && loc != retval); |
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124 if (is_oop) blk->do_oop((oop*)loc); |
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125 arg_num += 1; |
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126 } |
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127 assert(slot_num == 0, "must have processed all the arguments"); |
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128 } |
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129 |
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130 oop MethodHandles::RicochetFrame::compute_saved_args_layout(bool read_cache, bool write_cache) { |
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131 oop cookie = NULL; |
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132 if (read_cache) { |
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133 cookie = saved_args_layout(); |
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134 if (cookie != NULL) return cookie; |
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135 } |
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136 oop target = saved_target(); |
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137 oop mtype = java_lang_invoke_MethodHandle::type(target); |
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138 oop mtform = java_lang_invoke_MethodType::form(mtype); |
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139 cookie = java_lang_invoke_MethodTypeForm::vmlayout(mtform); |
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140 if (write_cache) { |
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141 (*saved_args_layout_addr()) = cookie; |
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142 } |
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143 return cookie; |
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144 } |
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145 |
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146 void MethodHandles::RicochetFrame::generate_ricochet_blob(MacroAssembler* _masm, |
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147 // output params: |
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148 int* bounce_offset, |
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149 int* exception_offset, |
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150 int* frame_size_in_words) { |
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151 (*frame_size_in_words) = RicochetFrame::frame_size_in_bytes() / wordSize; |
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152 |
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153 address start = __ pc(); |
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154 |
710 | 155 #ifdef ASSERT |
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156 __ hlt(); __ hlt(); __ hlt(); |
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157 // here's a hint of something special: |
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158 __ push(MAGIC_NUMBER_1); |
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159 __ push(MAGIC_NUMBER_2); |
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160 #endif //ASSERT |
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161 __ hlt(); // not reached |
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162 |
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163 // A return PC has just been popped from the stack. |
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164 // Return values are in registers. |
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165 // The ebp points into the RicochetFrame, which contains |
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166 // a cleanup continuation we must return to. |
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167 |
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168 (*bounce_offset) = __ pc() - start; |
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169 BLOCK_COMMENT("ricochet_blob.bounce"); |
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170 |
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171 if (VerifyMethodHandles) RicochetFrame::verify_clean(_masm); |
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172 trace_method_handle(_masm, "return/ricochet_blob.bounce"); |
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173 |
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174 __ jmp(frame_address(continuation_offset_in_bytes())); |
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175 __ hlt(); |
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176 DEBUG_ONLY(__ push(MAGIC_NUMBER_2)); |
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177 |
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178 (*exception_offset) = __ pc() - start; |
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179 BLOCK_COMMENT("ricochet_blob.exception"); |
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180 |
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181 // compare this to Interpreter::rethrow_exception_entry, which is parallel code |
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182 // for example, see TemplateInterpreterGenerator::generate_throw_exception |
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183 // Live registers in: |
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184 // rax: exception |
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185 // rdx: return address/pc that threw exception (ignored, always equal to bounce addr) |
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186 __ verify_oop(rax); |
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187 |
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188 // no need to empty_FPU_stack or reinit_heapbase, since caller frame will do the same if needed |
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189 |
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190 // Take down the frame. |
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191 |
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192 // Cf. InterpreterMacroAssembler::remove_activation. |
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193 leave_ricochet_frame(_masm, /*rcx_recv=*/ noreg, |
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194 saved_last_sp_register(), |
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195 /*sender_pc_reg=*/ rdx); |
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196 |
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197 // In between activations - previous activation type unknown yet |
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198 // compute continuation point - the continuation point expects the |
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199 // following registers set up: |
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200 // |
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201 // rax: exception |
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202 // rdx: return address/pc that threw exception |
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203 // rsp: expression stack of caller |
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204 // rbp: ebp of caller |
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205 __ push(rax); // save exception |
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206 __ push(rdx); // save return address |
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207 Register thread_reg = LP64_ONLY(r15_thread) NOT_LP64(rdi); |
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208 NOT_LP64(__ get_thread(thread_reg)); |
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209 __ call_VM_leaf(CAST_FROM_FN_PTR(address, |
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210 SharedRuntime::exception_handler_for_return_address), |
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211 thread_reg, rdx); |
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212 __ mov(rbx, rax); // save exception handler |
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213 __ pop(rdx); // restore return address |
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214 __ pop(rax); // restore exception |
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215 __ jmp(rbx); // jump to exception |
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216 // handler of caller |
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217 } |
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218 |
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219 void MethodHandles::RicochetFrame::enter_ricochet_frame(MacroAssembler* _masm, |
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220 Register rcx_recv, |
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221 Register rax_argv, |
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222 address return_handler, |
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223 Register rbx_temp) { |
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224 const Register saved_last_sp = saved_last_sp_register(); |
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225 Address rcx_mh_vmtarget( rcx_recv, java_lang_invoke_MethodHandle::vmtarget_offset_in_bytes() ); |
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226 Address rcx_amh_conversion( rcx_recv, java_lang_invoke_AdapterMethodHandle::conversion_offset_in_bytes() ); |
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227 |
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228 // Push the RicochetFrame a word at a time. |
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229 // This creates something similar to an interpreter frame. |
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230 // Cf. TemplateInterpreterGenerator::generate_fixed_frame. |
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231 BLOCK_COMMENT("push RicochetFrame {"); |
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232 DEBUG_ONLY(int rfo = (int) sizeof(RicochetFrame)); |
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233 assert((rfo -= wordSize) == RicochetFrame::sender_pc_offset_in_bytes(), ""); |
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234 #define RF_FIELD(push_value, name) \ |
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235 { push_value; \ |
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236 assert((rfo -= wordSize) == RicochetFrame::name##_offset_in_bytes(), ""); } |
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237 RF_FIELD(__ push(rbp), sender_link); |
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238 RF_FIELD(__ push(saved_last_sp), exact_sender_sp); // rsi/r13 |
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239 RF_FIELD(__ pushptr(rcx_amh_conversion), conversion); |
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240 RF_FIELD(__ push(rax_argv), saved_args_base); // can be updated if args are shifted |
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241 RF_FIELD(__ push((int32_t) NULL_WORD), saved_args_layout); // cache for GC layout cookie |
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242 if (UseCompressedOops) { |
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243 __ load_heap_oop(rbx_temp, rcx_mh_vmtarget); |
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244 RF_FIELD(__ push(rbx_temp), saved_target); |
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245 } else { |
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246 RF_FIELD(__ pushptr(rcx_mh_vmtarget), saved_target); |
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247 } |
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248 __ lea(rbx_temp, ExternalAddress(return_handler)); |
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249 RF_FIELD(__ push(rbx_temp), continuation); |
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250 #undef RF_FIELD |
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251 assert(rfo == 0, "fully initialized the RicochetFrame"); |
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252 // compute new frame pointer: |
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253 __ lea(rbp, Address(rsp, RicochetFrame::sender_link_offset_in_bytes())); |
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254 // Push guard word #1 in debug mode. |
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255 DEBUG_ONLY(__ push((int32_t) RicochetFrame::MAGIC_NUMBER_1)); |
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256 // For debugging, leave behind an indication of which stub built this frame. |
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257 DEBUG_ONLY({ Label L; __ call(L, relocInfo::none); __ bind(L); }); |
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258 BLOCK_COMMENT("} RicochetFrame"); |
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259 } |
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260 |
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261 void MethodHandles::RicochetFrame::leave_ricochet_frame(MacroAssembler* _masm, |
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262 Register rcx_recv, |
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263 Register new_sp_reg, |
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264 Register sender_pc_reg) { |
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265 assert_different_registers(rcx_recv, new_sp_reg, sender_pc_reg); |
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266 const Register saved_last_sp = saved_last_sp_register(); |
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267 // Take down the frame. |
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268 // Cf. InterpreterMacroAssembler::remove_activation. |
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269 BLOCK_COMMENT("end_ricochet_frame {"); |
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270 // TO DO: If (exact_sender_sp - extended_sender_sp) > THRESH, compact the frame down. |
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271 // This will keep stack in bounds even with unlimited tailcalls, each with an adapter. |
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272 if (rcx_recv->is_valid()) |
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273 __ movptr(rcx_recv, RicochetFrame::frame_address(RicochetFrame::saved_target_offset_in_bytes())); |
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274 __ movptr(sender_pc_reg, RicochetFrame::frame_address(RicochetFrame::sender_pc_offset_in_bytes())); |
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275 __ movptr(saved_last_sp, RicochetFrame::frame_address(RicochetFrame::exact_sender_sp_offset_in_bytes())); |
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276 __ movptr(rbp, RicochetFrame::frame_address(RicochetFrame::sender_link_offset_in_bytes())); |
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277 __ mov(rsp, new_sp_reg); |
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278 BLOCK_COMMENT("} end_ricochet_frame"); |
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279 } |
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280 |
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281 // Emit code to verify that RBP is pointing at a valid ricochet frame. |
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282 #ifdef ASSERT |
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283 enum { |
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284 ARG_LIMIT = 255, SLOP = 4, |
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285 // use this parameter for checking for garbage stack movements: |
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286 UNREASONABLE_STACK_MOVE = (ARG_LIMIT + SLOP) |
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287 // the slop defends against false alarms due to fencepost errors |
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288 }; |
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289 |
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290 void MethodHandles::RicochetFrame::verify_clean(MacroAssembler* _masm) { |
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291 // The stack should look like this: |
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292 // ... keep1 | dest=42 | keep2 | RF | magic | handler | magic | recursive args | |
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293 // Check various invariants. |
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294 verify_offsets(); |
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295 |
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296 Register rdi_temp = rdi; |
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297 Register rcx_temp = rcx; |
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298 { __ push(rdi_temp); __ push(rcx_temp); } |
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299 #define UNPUSH_TEMPS \ |
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300 { __ pop(rcx_temp); __ pop(rdi_temp); } |
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301 |
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302 Address magic_number_1_addr = RicochetFrame::frame_address(RicochetFrame::magic_number_1_offset_in_bytes()); |
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303 Address magic_number_2_addr = RicochetFrame::frame_address(RicochetFrame::magic_number_2_offset_in_bytes()); |
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304 Address continuation_addr = RicochetFrame::frame_address(RicochetFrame::continuation_offset_in_bytes()); |
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305 Address conversion_addr = RicochetFrame::frame_address(RicochetFrame::conversion_offset_in_bytes()); |
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306 Address saved_args_base_addr = RicochetFrame::frame_address(RicochetFrame::saved_args_base_offset_in_bytes()); |
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307 |
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308 Label L_bad, L_ok; |
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309 BLOCK_COMMENT("verify_clean {"); |
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310 // Magic numbers must check out: |
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311 __ cmpptr(magic_number_1_addr, (int32_t) MAGIC_NUMBER_1); |
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312 __ jcc(Assembler::notEqual, L_bad); |
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313 __ cmpptr(magic_number_2_addr, (int32_t) MAGIC_NUMBER_2); |
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314 __ jcc(Assembler::notEqual, L_bad); |
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315 |
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316 // Arguments pointer must look reasonable: |
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317 __ movptr(rcx_temp, saved_args_base_addr); |
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318 __ cmpptr(rcx_temp, rbp); |
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319 __ jcc(Assembler::below, L_bad); |
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320 __ subptr(rcx_temp, UNREASONABLE_STACK_MOVE * Interpreter::stackElementSize); |
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321 __ cmpptr(rcx_temp, rbp); |
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322 __ jcc(Assembler::above, L_bad); |
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323 |
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324 load_conversion_dest_type(_masm, rdi_temp, conversion_addr); |
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325 __ cmpl(rdi_temp, T_VOID); |
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326 __ jcc(Assembler::equal, L_ok); |
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327 __ movptr(rcx_temp, saved_args_base_addr); |
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328 load_conversion_vminfo(_masm, rdi_temp, conversion_addr); |
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329 __ cmpptr(Address(rcx_temp, rdi_temp, Interpreter::stackElementScale()), |
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330 (int32_t) RETURN_VALUE_PLACEHOLDER); |
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331 __ jcc(Assembler::equal, L_ok); |
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332 __ BIND(L_bad); |
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333 UNPUSH_TEMPS; |
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334 __ stop("damaged ricochet frame"); |
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335 __ BIND(L_ok); |
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336 UNPUSH_TEMPS; |
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337 BLOCK_COMMENT("} verify_clean"); |
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338 |
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339 #undef UNPUSH_TEMPS |
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340 |
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341 } |
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342 #endif //ASSERT |
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343 |
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344 void MethodHandles::load_klass_from_Class(MacroAssembler* _masm, Register klass_reg) { |
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345 if (VerifyMethodHandles) |
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346 verify_klass(_masm, klass_reg, SystemDictionaryHandles::Class_klass(), |
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347 "AMH argument is a Class"); |
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348 __ load_heap_oop(klass_reg, Address(klass_reg, java_lang_Class::klass_offset_in_bytes())); |
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349 } |
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350 |
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351 void MethodHandles::load_conversion_vminfo(MacroAssembler* _masm, Register reg, Address conversion_field_addr) { |
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352 int bits = BitsPerByte; |
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353 int offset = (CONV_VMINFO_SHIFT / bits); |
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354 int shift = (CONV_VMINFO_SHIFT % bits); |
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355 __ load_unsigned_byte(reg, conversion_field_addr.plus_disp(offset)); |
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356 assert(CONV_VMINFO_MASK == right_n_bits(bits - shift), "else change type of previous load"); |
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357 assert(shift == 0, "no shift needed"); |
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358 } |
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359 |
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360 void MethodHandles::load_conversion_dest_type(MacroAssembler* _masm, Register reg, Address conversion_field_addr) { |
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361 int bits = BitsPerByte; |
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362 int offset = (CONV_DEST_TYPE_SHIFT / bits); |
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363 int shift = (CONV_DEST_TYPE_SHIFT % bits); |
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364 __ load_unsigned_byte(reg, conversion_field_addr.plus_disp(offset)); |
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365 assert(CONV_TYPE_MASK == right_n_bits(bits - shift), "else change type of previous load"); |
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366 __ shrl(reg, shift); |
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367 DEBUG_ONLY(int conv_type_bits = (int) exact_log2(CONV_TYPE_MASK+1)); |
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368 assert((shift + conv_type_bits) == bits, "left justified in byte"); |
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369 } |
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370 |
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371 void MethodHandles::load_stack_move(MacroAssembler* _masm, |
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372 Register rdi_stack_move, |
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373 Register rcx_amh, |
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374 bool might_be_negative) { |
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375 BLOCK_COMMENT("load_stack_move {"); |
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376 Address rcx_amh_conversion(rcx_amh, java_lang_invoke_AdapterMethodHandle::conversion_offset_in_bytes()); |
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377 __ movl(rdi_stack_move, rcx_amh_conversion); |
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378 __ sarl(rdi_stack_move, CONV_STACK_MOVE_SHIFT); |
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379 #ifdef _LP64 |
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380 if (might_be_negative) { |
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381 // clean high bits of stack motion register (was loaded as an int) |
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382 __ movslq(rdi_stack_move, rdi_stack_move); |
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383 } |
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384 #endif //_LP64 |
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385 if (VerifyMethodHandles) { |
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386 Label L_ok, L_bad; |
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387 int32_t stack_move_limit = 0x4000; // extra-large |
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388 __ cmpptr(rdi_stack_move, stack_move_limit); |
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389 __ jcc(Assembler::greaterEqual, L_bad); |
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390 __ cmpptr(rdi_stack_move, -stack_move_limit); |
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391 __ jcc(Assembler::greater, L_ok); |
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392 __ bind(L_bad); |
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393 __ stop("load_stack_move of garbage value"); |
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394 __ BIND(L_ok); |
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395 } |
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396 BLOCK_COMMENT("} load_stack_move"); |
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397 } |
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398 |
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399 #ifdef ASSERT |
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400 void MethodHandles::RicochetFrame::verify_offsets() { |
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401 // Check compatibility of this struct with the more generally used offsets of class frame: |
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402 int ebp_off = sender_link_offset_in_bytes(); // offset from struct base to local rbp value |
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403 assert(ebp_off + wordSize*frame::interpreter_frame_method_offset == saved_args_base_offset_in_bytes(), ""); |
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404 assert(ebp_off + wordSize*frame::interpreter_frame_last_sp_offset == conversion_offset_in_bytes(), ""); |
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405 assert(ebp_off + wordSize*frame::interpreter_frame_sender_sp_offset == exact_sender_sp_offset_in_bytes(), ""); |
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406 // These last two have to be exact: |
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407 assert(ebp_off + wordSize*frame::link_offset == sender_link_offset_in_bytes(), ""); |
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408 assert(ebp_off + wordSize*frame::return_addr_offset == sender_pc_offset_in_bytes(), ""); |
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409 } |
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410 |
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411 void MethodHandles::RicochetFrame::verify() const { |
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412 verify_offsets(); |
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413 assert(magic_number_1() == MAGIC_NUMBER_1, ""); |
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414 assert(magic_number_2() == MAGIC_NUMBER_2, ""); |
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415 if (!Universe::heap()->is_gc_active()) { |
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416 if (saved_args_layout() != NULL) { |
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417 assert(saved_args_layout()->is_method(), "must be valid oop"); |
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418 } |
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419 if (saved_target() != NULL) { |
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420 assert(java_lang_invoke_MethodHandle::is_instance(saved_target()), "checking frame value"); |
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421 } |
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422 } |
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423 int conv_op = adapter_conversion_op(conversion()); |
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424 assert(conv_op == java_lang_invoke_AdapterMethodHandle::OP_COLLECT_ARGS || |
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425 conv_op == java_lang_invoke_AdapterMethodHandle::OP_FOLD_ARGS || |
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426 conv_op == java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_REF, |
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427 "must be a sane conversion"); |
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428 if (has_return_value_slot()) { |
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429 assert(*return_value_slot_addr() == RETURN_VALUE_PLACEHOLDER, ""); |
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430 } |
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431 } |
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432 #endif //PRODUCT |
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433 |
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434 #ifdef ASSERT |
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435 void MethodHandles::verify_argslot(MacroAssembler* _masm, |
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436 Register argslot_reg, |
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437 const char* error_message) { |
710 | 438 // Verify that argslot lies within (rsp, rbp]. |
439 Label L_ok, L_bad; | |
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440 BLOCK_COMMENT("verify_argslot {"); |
1304 | 441 __ cmpptr(argslot_reg, rbp); |
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442 __ jccb(Assembler::above, L_bad); |
1304 | 443 __ cmpptr(rsp, argslot_reg); |
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444 __ jccb(Assembler::below, L_ok); |
710 | 445 __ bind(L_bad); |
446 __ stop(error_message); | |
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447 __ BIND(L_ok); |
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448 BLOCK_COMMENT("} verify_argslot"); |
710 | 449 } |
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450 |
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451 void MethodHandles::verify_argslots(MacroAssembler* _masm, |
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452 RegisterOrConstant arg_slots, |
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453 Register arg_slot_base_reg, |
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454 bool negate_argslots, |
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455 const char* error_message) { |
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456 // Verify that [argslot..argslot+size) lies within (rsp, rbp). |
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457 Label L_ok, L_bad; |
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458 Register rdi_temp = rdi; |
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459 BLOCK_COMMENT("verify_argslots {"); |
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460 __ push(rdi_temp); |
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461 if (negate_argslots) { |
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462 if (arg_slots.is_constant()) { |
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463 arg_slots = -1 * arg_slots.as_constant(); |
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464 } else { |
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465 __ movptr(rdi_temp, arg_slots); |
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466 __ negptr(rdi_temp); |
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467 arg_slots = rdi_temp; |
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468 } |
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469 } |
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470 __ lea(rdi_temp, Address(arg_slot_base_reg, arg_slots, Interpreter::stackElementScale())); |
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471 __ cmpptr(rdi_temp, rbp); |
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472 __ pop(rdi_temp); |
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473 __ jcc(Assembler::above, L_bad); |
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474 __ cmpptr(rsp, arg_slot_base_reg); |
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475 __ jcc(Assembler::below, L_ok); |
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476 __ bind(L_bad); |
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477 __ stop(error_message); |
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478 __ BIND(L_ok); |
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479 BLOCK_COMMENT("} verify_argslots"); |
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480 } |
710 | 481 |
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482 // Make sure that arg_slots has the same sign as the given direction. |
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483 // If (and only if) arg_slots is a assembly-time constant, also allow it to be zero. |
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484 void MethodHandles::verify_stack_move(MacroAssembler* _masm, |
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485 RegisterOrConstant arg_slots, int direction) { |
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486 bool allow_zero = arg_slots.is_constant(); |
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487 if (direction == 0) { direction = +1; allow_zero = true; } |
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488 assert(stack_move_unit() == -1, "else add extra checks here"); |
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489 if (arg_slots.is_register()) { |
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490 Label L_ok, L_bad; |
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491 BLOCK_COMMENT("verify_stack_move {"); |
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492 // testl(arg_slots.as_register(), -stack_move_unit() - 1); // no need |
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493 // jcc(Assembler::notZero, L_bad); |
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494 __ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD); |
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495 if (direction > 0) { |
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496 __ jcc(allow_zero ? Assembler::less : Assembler::lessEqual, L_bad); |
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497 __ cmpptr(arg_slots.as_register(), (int32_t) UNREASONABLE_STACK_MOVE); |
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498 __ jcc(Assembler::less, L_ok); |
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499 } else { |
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500 __ jcc(allow_zero ? Assembler::greater : Assembler::greaterEqual, L_bad); |
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501 __ cmpptr(arg_slots.as_register(), (int32_t) -UNREASONABLE_STACK_MOVE); |
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502 __ jcc(Assembler::greater, L_ok); |
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503 } |
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504 __ bind(L_bad); |
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505 if (direction > 0) |
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506 __ stop("assert arg_slots > 0"); |
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507 else |
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508 __ stop("assert arg_slots < 0"); |
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509 __ BIND(L_ok); |
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510 BLOCK_COMMENT("} verify_stack_move"); |
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511 } else { |
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512 intptr_t size = arg_slots.as_constant(); |
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513 if (direction < 0) size = -size; |
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514 assert(size >= 0, "correct direction of constant move"); |
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515 assert(size < UNREASONABLE_STACK_MOVE, "reasonable size of constant move"); |
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516 } |
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517 } |
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518 |
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519 void MethodHandles::verify_klass(MacroAssembler* _masm, |
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520 Register obj, KlassHandle klass, |
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521 const char* error_message) { |
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522 oop* klass_addr = klass.raw_value(); |
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523 assert(klass_addr >= SystemDictionaryHandles::Object_klass().raw_value() && |
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524 klass_addr <= SystemDictionaryHandles::Long_klass().raw_value(), |
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525 "must be one of the SystemDictionaryHandles"); |
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526 Register temp = rdi; |
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527 Label L_ok, L_bad; |
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528 BLOCK_COMMENT("verify_klass {"); |
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529 __ verify_oop(obj); |
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530 __ testptr(obj, obj); |
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531 __ jcc(Assembler::zero, L_bad); |
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532 __ push(temp); |
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533 __ load_klass(temp, obj); |
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534 __ cmpptr(temp, ExternalAddress((address) klass_addr)); |
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535 __ jcc(Assembler::equal, L_ok); |
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536 intptr_t super_check_offset = klass->super_check_offset(); |
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537 __ movptr(temp, Address(temp, super_check_offset)); |
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538 __ cmpptr(temp, ExternalAddress((address) klass_addr)); |
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539 __ jcc(Assembler::equal, L_ok); |
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540 __ pop(temp); |
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541 __ bind(L_bad); |
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542 __ stop(error_message); |
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543 __ BIND(L_ok); |
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544 __ pop(temp); |
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545 BLOCK_COMMENT("} verify_klass"); |
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546 } |
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547 #endif //ASSERT |
710 | 548 |
549 // Code generation | |
550 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) { | |
551 // rbx: methodOop | |
552 // rcx: receiver method handle (must load from sp[MethodTypeForm.vmslots]) | |
553 // rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted) | |
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554 // rdx, rdi: garbage temp, blown away |
710 | 555 |
556 Register rbx_method = rbx; | |
557 Register rcx_recv = rcx; | |
558 Register rax_mtype = rax; | |
559 Register rdx_temp = rdx; | |
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560 Register rdi_temp = rdi; |
710 | 561 |
562 // emit WrongMethodType path first, to enable jccb back-branch from main path | |
563 Label wrong_method_type; | |
564 __ bind(wrong_method_type); | |
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565 Label invoke_generic_slow_path, invoke_exact_error_path; |
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566 assert(methodOopDesc::intrinsic_id_size_in_bytes() == sizeof(u1), "");; |
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567 __ cmpb(Address(rbx_method, methodOopDesc::intrinsic_id_offset_in_bytes()), (int) vmIntrinsics::_invokeExact); |
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568 __ jcc(Assembler::notEqual, invoke_generic_slow_path); |
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569 __ jmp(invoke_exact_error_path); |
710 | 570 |
571 // here's where control starts out: | |
572 __ align(CodeEntryAlignment); | |
573 address entry_point = __ pc(); | |
574 | |
575 // fetch the MethodType from the method handle into rax (the 'check' register) | |
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576 // FIXME: Interpreter should transmit pre-popped stack pointer, to locate base of arg list. |
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577 // This would simplify several touchy bits of code. |
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578 // See 6984712: JSR 292 method handle calls need a clean argument base pointer |
710 | 579 { |
580 Register tem = rbx_method; | |
581 for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) { | |
582 __ movptr(rax_mtype, Address(tem, *pchase)); | |
583 tem = rax_mtype; // in case there is another indirection | |
584 } | |
585 } | |
586 | |
587 // given the MethodType, find out where the MH argument is buried | |
2357
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588 __ load_heap_oop(rdx_temp, Address(rax_mtype, __ delayed_value(java_lang_invoke_MethodType::form_offset_in_bytes, rdi_temp))); |
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589 Register rdx_vmslots = rdx_temp; |
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590 __ movl(rdx_vmslots, Address(rdx_temp, __ delayed_value(java_lang_invoke_MethodTypeForm::vmslots_offset_in_bytes, rdi_temp))); |
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591 Address mh_receiver_slot_addr = __ argument_address(rdx_vmslots); |
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592 __ movptr(rcx_recv, mh_receiver_slot_addr); |
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593 |
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594 trace_method_handle(_masm, "invokeExact"); |
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595 |
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596 __ check_method_handle_type(rax_mtype, rcx_recv, rdi_temp, wrong_method_type); |
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597 |
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598 // Nobody uses the MH receiver slot after this. Make sure. |
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599 DEBUG_ONLY(__ movptr(mh_receiver_slot_addr, (int32_t)0x999999)); |
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600 |
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601 __ jump_to_method_handle_entry(rcx_recv, rdi_temp); |
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602 |
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603 // error path for invokeExact (only) |
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604 __ bind(invoke_exact_error_path); |
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605 // Stub wants expected type in rax and the actual type in rcx |
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606 __ jump(ExternalAddress(StubRoutines::throw_WrongMethodTypeException_entry())); |
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607 |
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608 // for invokeGeneric (only), apply argument and result conversions on the fly |
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609 __ bind(invoke_generic_slow_path); |
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610 #ifdef ASSERT |
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611 if (VerifyMethodHandles) { |
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612 Label L; |
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613 __ cmpb(Address(rbx_method, methodOopDesc::intrinsic_id_offset_in_bytes()), (int) vmIntrinsics::_invokeGeneric); |
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614 __ jcc(Assembler::equal, L); |
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615 __ stop("bad methodOop::intrinsic_id"); |
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616 __ bind(L); |
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617 } |
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618 #endif //ASSERT |
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619 Register rbx_temp = rbx_method; // don't need it now |
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620 |
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621 // make room on the stack for another pointer: |
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622 Register rcx_argslot = rcx_recv; |
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623 __ lea(rcx_argslot, __ argument_address(rdx_vmslots, 1)); |
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624 insert_arg_slots(_masm, 2 * stack_move_unit(), |
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625 rcx_argslot, rbx_temp, rdx_temp); |
710 | 626 |
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627 // load up an adapter from the calling type (Java weaves this) |
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628 Register rdx_adapter = rdx_temp; |
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629 __ load_heap_oop(rdx_temp, Address(rax_mtype, __ delayed_value(java_lang_invoke_MethodType::form_offset_in_bytes, rdi_temp))); |
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630 __ load_heap_oop(rdx_adapter, Address(rdx_temp, __ delayed_value(java_lang_invoke_MethodTypeForm::genericInvoker_offset_in_bytes, rdi_temp))); |
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631 __ verify_oop(rdx_adapter); |
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632 __ movptr(Address(rcx_argslot, 1 * Interpreter::stackElementSize), rdx_adapter); |
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633 // As a trusted first argument, pass the type being called, so the adapter knows |
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634 // the actual types of the arguments and return values. |
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635 // (Generic invokers are shared among form-families of method-type.) |
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636 __ movptr(Address(rcx_argslot, 0 * Interpreter::stackElementSize), rax_mtype); |
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637 // FIXME: assert that rdx_adapter is of the right method-type. |
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638 __ mov(rcx, rdx_adapter); |
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639 trace_method_handle(_masm, "invokeGeneric"); |
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640 __ jump_to_method_handle_entry(rcx, rdi_temp); |
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641 |
710 | 642 return entry_point; |
643 } | |
644 | |
645 // Helper to insert argument slots into the stack. | |
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646 // arg_slots must be a multiple of stack_move_unit() and < 0 |
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647 // rax_argslot is decremented to point to the new (shifted) location of the argslot |
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648 // But, rdx_temp ends up holding the original value of rax_argslot. |
710 | 649 void MethodHandles::insert_arg_slots(MacroAssembler* _masm, |
650 RegisterOrConstant arg_slots, | |
651 Register rax_argslot, | |
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652 Register rbx_temp, Register rdx_temp) { |
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653 // allow constant zero |
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654 if (arg_slots.is_constant() && arg_slots.as_constant() == 0) |
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655 return; |
710 | 656 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, |
657 (!arg_slots.is_register() ? rsp : arg_slots.as_register())); | |
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658 if (VerifyMethodHandles) |
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659 verify_argslot(_masm, rax_argslot, "insertion point must fall within current frame"); |
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660 if (VerifyMethodHandles) |
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661 verify_stack_move(_masm, arg_slots, -1); |
710 | 662 |
663 // Make space on the stack for the inserted argument(s). | |
664 // Then pull down everything shallower than rax_argslot. | |
665 // The stacked return address gets pulled down with everything else. | |
666 // That is, copy [rsp, argslot) downward by -size words. In pseudo-code: | |
667 // rsp -= size; | |
668 // for (rdx = rsp + size; rdx < argslot; rdx++) | |
669 // rdx[-size] = rdx[0] | |
670 // argslot -= size; | |
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671 BLOCK_COMMENT("insert_arg_slots {"); |
710 | 672 __ mov(rdx_temp, rsp); // source pointer for copy |
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673 __ lea(rsp, Address(rsp, arg_slots, Interpreter::stackElementScale())); |
710 | 674 { |
675 Label loop; | |
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676 __ BIND(loop); |
710 | 677 // pull one word down each time through the loop |
678 __ movptr(rbx_temp, Address(rdx_temp, 0)); | |
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679 __ movptr(Address(rdx_temp, arg_slots, Interpreter::stackElementScale()), rbx_temp); |
710 | 680 __ addptr(rdx_temp, wordSize); |
681 __ cmpptr(rdx_temp, rax_argslot); | |
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682 __ jcc(Assembler::below, loop); |
710 | 683 } |
684 | |
685 // Now move the argslot down, to point to the opened-up space. | |
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686 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Interpreter::stackElementScale())); |
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687 BLOCK_COMMENT("} insert_arg_slots"); |
710 | 688 } |
689 | |
690 // Helper to remove argument slots from the stack. | |
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691 // arg_slots must be a multiple of stack_move_unit() and > 0 |
710 | 692 void MethodHandles::remove_arg_slots(MacroAssembler* _masm, |
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693 RegisterOrConstant arg_slots, |
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694 Register rax_argslot, |
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695 Register rbx_temp, Register rdx_temp) { |
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696 // allow constant zero |
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697 if (arg_slots.is_constant() && arg_slots.as_constant() == 0) |
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698 return; |
710 | 699 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, |
700 (!arg_slots.is_register() ? rsp : arg_slots.as_register())); | |
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701 if (VerifyMethodHandles) |
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702 verify_argslots(_masm, arg_slots, rax_argslot, false, |
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703 "deleted argument(s) must fall within current frame"); |
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704 if (VerifyMethodHandles) |
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705 verify_stack_move(_masm, arg_slots, +1); |
710 | 706 |
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707 BLOCK_COMMENT("remove_arg_slots {"); |
710 | 708 // Pull up everything shallower than rax_argslot. |
709 // Then remove the excess space on the stack. | |
710 // The stacked return address gets pulled up with everything else. | |
711 // That is, copy [rsp, argslot) upward by size words. In pseudo-code: | |
712 // for (rdx = argslot-1; rdx >= rsp; --rdx) | |
713 // rdx[size] = rdx[0] | |
714 // argslot += size; | |
715 // rsp += size; | |
716 __ lea(rdx_temp, Address(rax_argslot, -wordSize)); // source pointer for copy | |
717 { | |
718 Label loop; | |
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719 __ BIND(loop); |
710 | 720 // pull one word up each time through the loop |
721 __ movptr(rbx_temp, Address(rdx_temp, 0)); | |
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722 __ movptr(Address(rdx_temp, arg_slots, Interpreter::stackElementScale()), rbx_temp); |
710 | 723 __ addptr(rdx_temp, -wordSize); |
724 __ cmpptr(rdx_temp, rsp); | |
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725 __ jcc(Assembler::aboveEqual, loop); |
710 | 726 } |
727 | |
728 // Now move the argslot up, to point to the just-copied block. | |
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729 __ lea(rsp, Address(rsp, arg_slots, Interpreter::stackElementScale())); |
710 | 730 // And adjust the argslot address to point at the deletion point. |
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731 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Interpreter::stackElementScale())); |
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732 BLOCK_COMMENT("} remove_arg_slots"); |
710 | 733 } |
734 | |
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735 // Helper to copy argument slots to the top of the stack. |
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736 // The sequence starts with rax_argslot and is counted by slot_count |
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737 // slot_count must be a multiple of stack_move_unit() and >= 0 |
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738 // This function blows the temps but does not change rax_argslot. |
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739 void MethodHandles::push_arg_slots(MacroAssembler* _masm, |
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740 Register rax_argslot, |
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741 RegisterOrConstant slot_count, |
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|
742 int skip_words_count, |
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743 Register rbx_temp, Register rdx_temp) { |
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744 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, |
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745 (!slot_count.is_register() ? rbp : slot_count.as_register()), |
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746 rsp); |
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747 assert(Interpreter::stackElementSize == wordSize, "else change this code"); |
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748 |
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749 if (VerifyMethodHandles) |
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750 verify_stack_move(_masm, slot_count, 0); |
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751 |
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752 // allow constant zero |
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|
753 if (slot_count.is_constant() && slot_count.as_constant() == 0) |
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|
754 return; |
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|
755 |
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756 BLOCK_COMMENT("push_arg_slots {"); |
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757 |
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758 Register rbx_top = rbx_temp; |
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|
759 |
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|
760 // There is at most 1 word to carry down with the TOS. |
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761 switch (skip_words_count) { |
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|
762 case 1: __ pop(rdx_temp); break; |
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|
763 case 0: break; |
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|
764 default: ShouldNotReachHere(); |
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|
765 } |
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766 |
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767 if (slot_count.is_constant()) { |
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768 for (int i = slot_count.as_constant() - 1; i >= 0; i--) { |
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|
769 __ pushptr(Address(rax_argslot, i * wordSize)); |
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770 } |
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771 } else { |
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|
772 Label L_plural, L_loop, L_break; |
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|
773 // Emit code to dynamically check for the common cases, zero and one slot. |
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|
774 __ cmpl(slot_count.as_register(), (int32_t) 1); |
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|
775 __ jccb(Assembler::greater, L_plural); |
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|
776 __ jccb(Assembler::less, L_break); |
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777 __ pushptr(Address(rax_argslot, 0)); |
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778 __ jmpb(L_break); |
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779 __ BIND(L_plural); |
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780 |
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781 // Loop for 2 or more: |
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|
782 // rbx = &rax[slot_count] |
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|
783 // while (rbx > rax) *(--rsp) = *(--rbx) |
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|
784 __ lea(rbx_top, Address(rax_argslot, slot_count, Address::times_ptr)); |
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|
785 __ BIND(L_loop); |
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|
786 __ subptr(rbx_top, wordSize); |
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787 __ pushptr(Address(rbx_top, 0)); |
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|
788 __ cmpptr(rbx_top, rax_argslot); |
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|
789 __ jcc(Assembler::above, L_loop); |
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790 __ bind(L_break); |
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791 } |
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792 switch (skip_words_count) { |
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793 case 1: __ push(rdx_temp); break; |
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794 case 0: break; |
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795 default: ShouldNotReachHere(); |
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|
796 } |
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797 BLOCK_COMMENT("} push_arg_slots"); |
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|
798 } |
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|
799 |
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800 // in-place movement; no change to rsp |
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801 // blows rax_temp, rdx_temp |
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802 void MethodHandles::move_arg_slots_up(MacroAssembler* _masm, |
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803 Register rbx_bottom, // invariant |
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804 Address top_addr, // can use rax_temp |
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805 RegisterOrConstant positive_distance_in_slots, |
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806 Register rax_temp, Register rdx_temp) { |
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|
807 BLOCK_COMMENT("move_arg_slots_up {"); |
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|
808 assert_different_registers(rbx_bottom, |
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809 rax_temp, rdx_temp, |
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810 positive_distance_in_slots.register_or_noreg()); |
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811 Label L_loop, L_break; |
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812 Register rax_top = rax_temp; |
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813 if (!top_addr.is_same_address(Address(rax_top, 0))) |
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814 __ lea(rax_top, top_addr); |
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|
815 // Detect empty (or broken) loop: |
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|
816 #ifdef ASSERT |
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817 if (VerifyMethodHandles) { |
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818 // Verify that &bottom < &top (non-empty interval) |
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819 Label L_ok, L_bad; |
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820 if (positive_distance_in_slots.is_register()) { |
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821 __ cmpptr(positive_distance_in_slots.as_register(), (int32_t) 0); |
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822 __ jcc(Assembler::lessEqual, L_bad); |
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823 } |
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824 __ cmpptr(rbx_bottom, rax_top); |
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825 __ jcc(Assembler::below, L_ok); |
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826 __ bind(L_bad); |
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827 __ stop("valid bounds (copy up)"); |
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828 __ BIND(L_ok); |
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|
829 } |
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830 #endif |
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831 __ cmpptr(rbx_bottom, rax_top); |
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|
832 __ jccb(Assembler::aboveEqual, L_break); |
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833 // work rax down to rbx, copying contiguous data upwards |
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diff
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|
834 // In pseudo-code: |
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835 // [rbx, rax) = &[bottom, top) |
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836 // while (--rax >= rbx) *(rax + distance) = *(rax + 0), rax--; |
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837 __ BIND(L_loop); |
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|
838 __ subptr(rax_top, wordSize); |
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|
839 __ movptr(rdx_temp, Address(rax_top, 0)); |
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840 __ movptr( Address(rax_top, positive_distance_in_slots, Address::times_ptr), rdx_temp); |
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841 __ cmpptr(rax_top, rbx_bottom); |
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842 __ jcc(Assembler::above, L_loop); |
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diff
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|
843 assert(Interpreter::stackElementSize == wordSize, "else change loop"); |
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|
844 __ bind(L_break); |
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845 BLOCK_COMMENT("} move_arg_slots_up"); |
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|
846 } |
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847 |
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848 // in-place movement; no change to rsp |
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849 // blows rax_temp, rdx_temp |
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850 void MethodHandles::move_arg_slots_down(MacroAssembler* _masm, |
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|
851 Address bottom_addr, // can use rax_temp |
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|
852 Register rbx_top, // invariant |
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|
853 RegisterOrConstant negative_distance_in_slots, |
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854 Register rax_temp, Register rdx_temp) { |
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855 BLOCK_COMMENT("move_arg_slots_down {"); |
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|
856 assert_different_registers(rbx_top, |
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|
857 negative_distance_in_slots.register_or_noreg(), |
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858 rax_temp, rdx_temp); |
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|
859 Label L_loop, L_break; |
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|
860 Register rax_bottom = rax_temp; |
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861 if (!bottom_addr.is_same_address(Address(rax_bottom, 0))) |
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862 __ lea(rax_bottom, bottom_addr); |
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diff
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|
863 // Detect empty (or broken) loop: |
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diff
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|
864 #ifdef ASSERT |
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|
865 assert(!negative_distance_in_slots.is_constant() || negative_distance_in_slots.as_constant() < 0, ""); |
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866 if (VerifyMethodHandles) { |
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867 // Verify that &bottom < &top (non-empty interval) |
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868 Label L_ok, L_bad; |
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869 if (negative_distance_in_slots.is_register()) { |
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870 __ cmpptr(negative_distance_in_slots.as_register(), (int32_t) 0); |
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871 __ jcc(Assembler::greaterEqual, L_bad); |
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|
872 } |
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873 __ cmpptr(rax_bottom, rbx_top); |
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874 __ jcc(Assembler::below, L_ok); |
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875 __ bind(L_bad); |
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diff
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|
876 __ stop("valid bounds (copy down)"); |
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diff
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|
877 __ BIND(L_ok); |
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|
878 } |
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879 #endif |
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880 __ cmpptr(rax_bottom, rbx_top); |
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881 __ jccb(Assembler::aboveEqual, L_break); |
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882 // work rax up to rbx, copying contiguous data downwards |
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|
883 // In pseudo-code: |
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884 // [rax, rbx) = &[bottom, top) |
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885 // while (rax < rbx) *(rax - distance) = *(rax + 0), rax++; |
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886 __ BIND(L_loop); |
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887 __ movptr(rdx_temp, Address(rax_bottom, 0)); |
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888 __ movptr( Address(rax_bottom, negative_distance_in_slots, Address::times_ptr), rdx_temp); |
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889 __ addptr(rax_bottom, wordSize); |
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890 __ cmpptr(rax_bottom, rbx_top); |
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diff
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|
891 __ jcc(Assembler::below, L_loop); |
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|
892 assert(Interpreter::stackElementSize == wordSize, "else change loop"); |
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diff
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|
893 __ bind(L_break); |
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diff
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|
894 BLOCK_COMMENT("} move_arg_slots_down"); |
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|
895 } |
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|
896 |
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897 // Copy from a field or array element to a stacked argument slot. |
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898 // is_element (ignored) says whether caller is loading an array element instead of an instance field. |
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899 void MethodHandles::move_typed_arg(MacroAssembler* _masm, |
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900 BasicType type, bool is_element, |
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|
901 Address slot_dest, Address value_src, |
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902 Register rbx_temp, Register rdx_temp) { |
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903 BLOCK_COMMENT(!is_element ? "move_typed_arg {" : "move_typed_arg { (array element)"); |
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|
904 if (type == T_OBJECT || type == T_ARRAY) { |
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diff
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|
905 __ load_heap_oop(rbx_temp, value_src); |
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diff
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|
906 __ movptr(slot_dest, rbx_temp); |
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|
907 } else if (type != T_VOID) { |
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|
908 int arg_size = type2aelembytes(type); |
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diff
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|
909 bool arg_is_signed = is_signed_subword_type(type); |
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910 int slot_size = (arg_size > wordSize) ? arg_size : wordSize; |
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911 __ load_sized_value( rdx_temp, value_src, arg_size, arg_is_signed, rbx_temp); |
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912 __ store_sized_value( slot_dest, rdx_temp, slot_size, rbx_temp); |
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|
913 } |
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914 BLOCK_COMMENT("} move_typed_arg"); |
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|
915 } |
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|
916 |
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|
917 void MethodHandles::move_return_value(MacroAssembler* _masm, BasicType type, |
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|
918 Address return_slot) { |
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|
919 BLOCK_COMMENT("move_return_value {"); |
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|
920 // Old versions of the JVM must clean the FPU stack after every return. |
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diff
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|
921 #ifndef _LP64 |
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diff
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|
922 #ifdef COMPILER2 |
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923 // The FPU stack is clean if UseSSE >= 2 but must be cleaned in other cases |
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diff
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|
924 if ((type == T_FLOAT && UseSSE < 1) || (type == T_DOUBLE && UseSSE < 2)) { |
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925 for (int i = 1; i < 8; i++) { |
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diff
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|
926 __ ffree(i); |
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|
927 } |
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|
928 } else if (UseSSE < 2) { |
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|
929 __ empty_FPU_stack(); |
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|
930 } |
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|
931 #endif //COMPILER2 |
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932 #endif //!_LP64 |
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933 |
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934 // Look at the type and pull the value out of the corresponding register. |
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935 if (type == T_VOID) { |
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|
936 // nothing to do |
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937 } else if (type == T_OBJECT) { |
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938 __ movptr(return_slot, rax); |
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939 } else if (type == T_INT || is_subword_type(type)) { |
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940 // write the whole word, even if only 32 bits is significant |
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941 __ movptr(return_slot, rax); |
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942 } else if (type == T_LONG) { |
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943 // store the value by parts |
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944 // Note: We assume longs are continguous (if misaligned) on the interpreter stack. |
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945 __ store_sized_value(return_slot, rax, BytesPerLong, rdx); |
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946 } else if (NOT_LP64((type == T_FLOAT && UseSSE < 1) || |
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947 (type == T_DOUBLE && UseSSE < 2) ||) |
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948 false) { |
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949 // Use old x86 FPU registers: |
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950 if (type == T_FLOAT) |
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951 __ fstp_s(return_slot); |
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952 else |
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953 __ fstp_d(return_slot); |
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954 } else if (type == T_FLOAT) { |
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955 __ movflt(return_slot, xmm0); |
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956 } else if (type == T_DOUBLE) { |
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957 __ movdbl(return_slot, xmm0); |
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958 } else { |
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959 ShouldNotReachHere(); |
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960 } |
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961 BLOCK_COMMENT("} move_return_value"); |
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962 } |
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963 |
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964 |
710 | 965 #ifndef PRODUCT |
1133
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966 extern "C" void print_method_handle(oop mh); |
710 | 967 void trace_method_handle_stub(const char* adaptername, |
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968 oop mh, |
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969 intptr_t* saved_regs, |
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970 intptr_t* entry_sp, |
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971 intptr_t* saved_sp, |
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972 intptr_t* saved_bp) { |
710 | 973 // called as a leaf from native code: do not block the JVM! |
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974 bool has_mh = (strstr(adaptername, "return/") == NULL); // return adapters don't have rcx_mh |
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975 intptr_t* last_sp = (intptr_t*) saved_bp[frame::interpreter_frame_last_sp_offset]; |
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976 intptr_t* base_sp = last_sp; |
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977 typedef MethodHandles::RicochetFrame RicochetFrame; |
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978 RicochetFrame* rfp = (RicochetFrame*)((address)saved_bp - RicochetFrame::sender_link_offset_in_bytes()); |
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979 if (!UseRicochetFrames || Universe::heap()->is_in((address) rfp->saved_args_base())) { |
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980 // Probably an interpreter frame. |
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981 base_sp = (intptr_t*) saved_bp[frame::interpreter_frame_monitor_block_top_offset]; |
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982 } |
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983 intptr_t mh_reg = (intptr_t)mh; |
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984 const char* mh_reg_name = "rcx_mh"; |
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985 if (!has_mh) mh_reg_name = "rcx"; |
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986 tty->print_cr("MH %s %s="PTR_FORMAT" sp=("PTR_FORMAT"+"INTX_FORMAT") stack_size="INTX_FORMAT" bp="PTR_FORMAT, |
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987 adaptername, mh_reg_name, mh_reg, |
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988 (intptr_t)entry_sp, (intptr_t)(saved_sp - entry_sp), (intptr_t)(base_sp - last_sp), (intptr_t)saved_bp); |
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989 if (Verbose) { |
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990 tty->print(" reg dump: "); |
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991 int saved_regs_count = (entry_sp-1) - saved_regs; |
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992 // 32 bit: rdi rsi rbp rsp; rbx rdx rcx (*) rax |
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993 int i; |
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994 for (i = 0; i <= saved_regs_count; i++) { |
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995 if (i > 0 && i % 4 == 0 && i != saved_regs_count) { |
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996 tty->cr(); |
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997 tty->print(" + dump: "); |
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998 } |
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999 tty->print(" %d: "PTR_FORMAT, i, saved_regs[i]); |
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1000 } |
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1001 tty->cr(); |
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1002 if (last_sp != saved_sp && last_sp != NULL) |
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1003 tty->print_cr("*** last_sp="PTR_FORMAT, (intptr_t)last_sp); |
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1004 int stack_dump_count = 16; |
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1005 if (stack_dump_count < (int)(saved_bp + 2 - saved_sp)) |
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1006 stack_dump_count = (int)(saved_bp + 2 - saved_sp); |
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1007 if (stack_dump_count > 64) stack_dump_count = 48; |
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1008 for (i = 0; i < stack_dump_count; i += 4) { |
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1009 tty->print_cr(" dump at SP[%d] "PTR_FORMAT": "PTR_FORMAT" "PTR_FORMAT" "PTR_FORMAT" "PTR_FORMAT, |
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1010 i, (intptr_t) &entry_sp[i+0], entry_sp[i+0], entry_sp[i+1], entry_sp[i+2], entry_sp[i+3]); |
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1011 } |
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1012 if (has_mh) |
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1013 print_method_handle(mh); |
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1014 } |
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1015 } |
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1016 |
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1017 // The stub wraps the arguments in a struct on the stack to avoid |
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1018 // dealing with the different calling conventions for passing 6 |
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1019 // arguments. |
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1020 struct MethodHandleStubArguments { |
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1021 const char* adaptername; |
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1022 oopDesc* mh; |
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1023 intptr_t* saved_regs; |
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1024 intptr_t* entry_sp; |
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1025 intptr_t* saved_sp; |
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1026 intptr_t* saved_bp; |
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1027 }; |
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1028 void trace_method_handle_stub_wrapper(MethodHandleStubArguments* args) { |
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1029 trace_method_handle_stub(args->adaptername, |
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1030 args->mh, |
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1031 args->saved_regs, |
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1032 args->entry_sp, |
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1033 args->saved_sp, |
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1034 args->saved_bp); |
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1035 } |
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1036 |
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1037 void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) { |
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1038 if (!TraceMethodHandles) return; |
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1039 BLOCK_COMMENT("trace_method_handle {"); |
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1040 __ push(rax); |
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1041 __ lea(rax, Address(rsp, wordSize * NOT_LP64(6) LP64_ONLY(14))); // entry_sp __ pusha(); |
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1042 __ pusha(); |
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1043 __ mov(rbx, rsp); |
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1044 __ enter(); |
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1045 // incoming state: |
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1046 // rcx: method handle |
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1047 // r13 or rsi: saved sp |
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1048 // To avoid calling convention issues, build a record on the stack and pass the pointer to that instead. |
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1049 __ push(rbp); // saved_bp |
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1050 __ push(rsi); // saved_sp |
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1051 __ push(rax); // entry_sp |
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1052 __ push(rbx); // pusha saved_regs |
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1053 __ push(rcx); // mh |
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1054 __ push(rcx); // adaptername |
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1055 __ movptr(Address(rsp, 0), (intptr_t) adaptername); |
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1056 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub_wrapper), rsp); |
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1057 __ leave(); |
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1058 __ popa(); |
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1059 __ pop(rax); |
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1060 BLOCK_COMMENT("} trace_method_handle"); |
710 | 1061 } |
1062 #endif //PRODUCT | |
1063 | |
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1064 // which conversion op types are implemented here? |
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|
1065 int MethodHandles::adapter_conversion_ops_supported_mask() { |
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1066 return ((1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_ONLY) |
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1067 |(1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_RAW) |
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1068 |(1<<java_lang_invoke_AdapterMethodHandle::OP_CHECK_CAST) |
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1069 |(1<<java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_PRIM) |
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1070 |(1<<java_lang_invoke_AdapterMethodHandle::OP_REF_TO_PRIM) |
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1071 //OP_PRIM_TO_REF is below... |
2357
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1072 |(1<<java_lang_invoke_AdapterMethodHandle::OP_SWAP_ARGS) |
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1073 |(1<<java_lang_invoke_AdapterMethodHandle::OP_ROT_ARGS) |
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1074 |(1<<java_lang_invoke_AdapterMethodHandle::OP_DUP_ARGS) |
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1075 |(1<<java_lang_invoke_AdapterMethodHandle::OP_DROP_ARGS) |
3363
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1076 //OP_COLLECT_ARGS is below... |
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1077 |(1<<java_lang_invoke_AdapterMethodHandle::OP_SPREAD_ARGS) |
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1078 |(!UseRicochetFrames ? 0 : |
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1079 java_lang_invoke_MethodTypeForm::vmlayout_offset_in_bytes() <= 0 ? 0 : |
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1080 ((1<<java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_REF) |
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1081 |(1<<java_lang_invoke_AdapterMethodHandle::OP_COLLECT_ARGS) |
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1082 |(1<<java_lang_invoke_AdapterMethodHandle::OP_FOLD_ARGS) |
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1083 )) |
1507
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1084 ); |
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1085 } |
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1086 |
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1087 //------------------------------------------------------------------------------ |
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1088 // MethodHandles::generate_method_handle_stub |
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1089 // |
710 | 1090 // Generate an "entry" field for a method handle. |
1091 // This determines how the method handle will respond to calls. | |
2116
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1092 void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) { |
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1093 MethodHandles::EntryKind ek_orig = ek_original_kind(ek); |
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1094 |
710 | 1095 // Here is the register state during an interpreted call, |
1096 // as set up by generate_method_handle_interpreter_entry(): | |
1097 // - rbx: garbage temp (was MethodHandle.invoke methodOop, unused) | |
1098 // - rcx: receiver method handle | |
1099 // - rax: method handle type (only used by the check_mtype entry point) | |
1100 // - rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted) | |
1101 // - rdx: garbage temp, can blow away | |
1102 | |
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1103 const Register rcx_recv = rcx; |
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1104 const Register rax_argslot = rax; |
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1105 const Register rbx_temp = rbx; |
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1106 const Register rdx_temp = rdx; |
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1107 const Register rdi_temp = rdi; |
710 | 1108 |
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1109 // This guy is set up by prepare_to_jump_from_interpreted (from interpreted calls) |
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1110 // and gen_c2i_adapter (from compiled calls): |
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1111 const Register saved_last_sp = saved_last_sp_register(); |
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1112 |
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1113 // Argument registers for _raise_exception. |
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1114 // 32-bit: Pass first two oop/int args in registers ECX and EDX. |
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1115 const Register rarg0_code = LP64_ONLY(j_rarg0) NOT_LP64(rcx); |
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1116 const Register rarg1_actual = LP64_ONLY(j_rarg1) NOT_LP64(rdx); |
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1117 const Register rarg2_required = LP64_ONLY(j_rarg2) NOT_LP64(rdi); |
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1118 assert_different_registers(rarg0_code, rarg1_actual, rarg2_required, saved_last_sp); |
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1119 |
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1120 guarantee(java_lang_invoke_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets"); |
710 | 1121 |
1122 // some handy addresses | |
1123 Address rbx_method_fie( rbx, methodOopDesc::from_interpreted_offset() ); | |
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1124 Address rbx_method_fce( rbx, methodOopDesc::from_compiled_offset() ); |
710 | 1125 |
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1126 Address rcx_mh_vmtarget( rcx_recv, java_lang_invoke_MethodHandle::vmtarget_offset_in_bytes() ); |
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1127 Address rcx_dmh_vmindex( rcx_recv, java_lang_invoke_DirectMethodHandle::vmindex_offset_in_bytes() ); |
710 | 1128 |
2357
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1129 Address rcx_bmh_vmargslot( rcx_recv, java_lang_invoke_BoundMethodHandle::vmargslot_offset_in_bytes() ); |
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1130 Address rcx_bmh_argument( rcx_recv, java_lang_invoke_BoundMethodHandle::argument_offset_in_bytes() ); |
710 | 1131 |
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1132 Address rcx_amh_vmargslot( rcx_recv, java_lang_invoke_AdapterMethodHandle::vmargslot_offset_in_bytes() ); |
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1133 Address rcx_amh_argument( rcx_recv, java_lang_invoke_AdapterMethodHandle::argument_offset_in_bytes() ); |
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1134 Address rcx_amh_conversion( rcx_recv, java_lang_invoke_AdapterMethodHandle::conversion_offset_in_bytes() ); |
710 | 1135 Address vmarg; // __ argument_address(vmargslot) |
1136 | |
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1137 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); |
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1138 |
710 | 1139 if (have_entry(ek)) { |
1140 __ nop(); // empty stubs make SG sick | |
1141 return; | |
1142 } | |
1143 | |
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1144 #ifdef ASSERT |
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1145 __ push((int32_t) 0xEEEEEEEE); |
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1146 __ push((int32_t) (intptr_t) entry_name(ek)); |
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1147 LP64_ONLY(__ push((int32_t) high((intptr_t) entry_name(ek)))); |
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1148 __ push((int32_t) 0x33333333); |
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1149 #endif //ASSERT |
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1150 |
710 | 1151 address interp_entry = __ pc(); |
1152 | |
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1153 trace_method_handle(_masm, entry_name(ek)); |
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1154 |
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1155 BLOCK_COMMENT(err_msg("Entry %s {", entry_name(ek))); |
710 | 1156 |
1157 switch ((int) ek) { | |
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1158 case _raise_exception: |
710 | 1159 { |
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1160 // Not a real MH entry, but rather shared code for raising an |
2321
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1161 // exception. Since we use the compiled entry, arguments are |
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1162 // expected in compiler argument registers. |
2116
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1163 assert(raise_exception_method(), "must be set"); |
2321
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1164 assert(raise_exception_method()->from_compiled_entry(), "method must be linked"); |
710 | 1165 |
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1166 const Register rdi_pc = rax; |
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1167 __ pop(rdi_pc); // caller PC |
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1168 __ mov(rsp, saved_last_sp); // cut the stack back to where the caller started |
710 | 1169 |
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1170 Register rbx_method = rbx_temp; |
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1171 __ movptr(rbx_method, ExternalAddress((address) &_raise_exception_method)); |
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1172 |
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1173 const int jobject_oop_offset = 0; |
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1174 __ movptr(rbx_method, Address(rbx_method, jobject_oop_offset)); // dereference the jobject |
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1175 __ verify_oop(rbx_method); |
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1176 |
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1177 NOT_LP64(__ push(rarg2_required)); |
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1178 __ push(rdi_pc); // restore caller PC |
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1179 __ jmp(rbx_method_fce); // jump to compiled entry |
710 | 1180 } |
1181 break; | |
1182 | |
1183 case _invokestatic_mh: | |
1184 case _invokespecial_mh: | |
1185 { | |
1186 Register rbx_method = rbx_temp; | |
1846 | 1187 __ load_heap_oop(rbx_method, rcx_mh_vmtarget); // target is a methodOop |
710 | 1188 __ verify_oop(rbx_method); |
1189 // same as TemplateTable::invokestatic or invokespecial, | |
1190 // minus the CP setup and profiling: | |
1191 if (ek == _invokespecial_mh) { | |
1192 // Must load & check the first argument before entering the target method. | |
1193 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
1194 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
1195 __ null_check(rcx_recv); | |
1196 __ verify_oop(rcx_recv); | |
1197 } | |
1198 __ jmp(rbx_method_fie); | |
1199 } | |
1200 break; | |
1201 | |
1202 case _invokevirtual_mh: | |
1203 { | |
1204 // same as TemplateTable::invokevirtual, | |
1205 // minus the CP setup and profiling: | |
1206 | |
1207 // pick out the vtable index and receiver offset from the MH, | |
1208 // and then we can discard it: | |
1209 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
1210 Register rbx_index = rbx_temp; | |
1211 __ movl(rbx_index, rcx_dmh_vmindex); | |
1212 // Note: The verifier allows us to ignore rcx_mh_vmtarget. | |
1213 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
1214 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes()); | |
1215 | |
1216 // get receiver klass | |
1217 Register rax_klass = rax_argslot; | |
1218 __ load_klass(rax_klass, rcx_recv); | |
1219 __ verify_oop(rax_klass); | |
1220 | |
1221 // get target methodOop & entry point | |
1222 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
1223 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below"); | |
1224 Address vtable_entry_addr(rax_klass, | |
1225 rbx_index, Address::times_ptr, | |
1226 base + vtableEntry::method_offset_in_bytes()); | |
1227 Register rbx_method = rbx_temp; | |
1108 | 1228 __ movptr(rbx_method, vtable_entry_addr); |
710 | 1229 |
1230 __ verify_oop(rbx_method); | |
1231 __ jmp(rbx_method_fie); | |
1232 } | |
1233 break; | |
1234 | |
1235 case _invokeinterface_mh: | |
1236 { | |
1237 // same as TemplateTable::invokeinterface, | |
1238 // minus the CP setup and profiling: | |
1239 | |
1240 // pick out the interface and itable index from the MH. | |
1241 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
1242 Register rdx_intf = rdx_temp; | |
1243 Register rbx_index = rbx_temp; | |
1846 | 1244 __ load_heap_oop(rdx_intf, rcx_mh_vmtarget); |
1245 __ movl(rbx_index, rcx_dmh_vmindex); | |
710 | 1246 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); |
1247 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes()); | |
1248 | |
1249 // get receiver klass | |
1250 Register rax_klass = rax_argslot; | |
1251 __ load_klass(rax_klass, rcx_recv); | |
1252 __ verify_oop(rax_klass); | |
1253 | |
1254 Register rbx_method = rbx_index; | |
1255 | |
1256 // get interface klass | |
1257 Label no_such_interface; | |
1258 __ verify_oop(rdx_intf); | |
1259 __ lookup_interface_method(rax_klass, rdx_intf, | |
1260 // note: next two args must be the same: | |
1261 rbx_index, rbx_method, | |
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1262 rdi_temp, |
710 | 1263 no_such_interface); |
1264 | |
1265 __ verify_oop(rbx_method); | |
1266 __ jmp(rbx_method_fie); | |
1267 __ hlt(); | |
1268 | |
1269 __ bind(no_such_interface); | |
1270 // Throw an exception. | |
1271 // For historical reasons, it will be IncompatibleClassChangeError. | |
2088
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1272 __ mov(rbx_temp, rcx_recv); // rarg2_required might be RCX |
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1273 assert_different_registers(rarg2_required, rbx_temp); |
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1274 __ movptr(rarg2_required, Address(rdx_intf, java_mirror_offset)); // required interface |
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1275 __ mov( rarg1_actual, rbx_temp); // bad receiver |
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1276 __ movl( rarg0_code, (int) Bytecodes::_invokeinterface); // who is complaining? |
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1277 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 1278 } |
1279 break; | |
1280 | |
1281 case _bound_ref_mh: | |
1282 case _bound_int_mh: | |
1283 case _bound_long_mh: | |
1284 case _bound_ref_direct_mh: | |
1285 case _bound_int_direct_mh: | |
1286 case _bound_long_direct_mh: | |
1287 { | |
3442
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1288 const bool direct_to_method = (ek >= _bound_ref_direct_mh); |
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1289 BasicType arg_type = ek_bound_mh_arg_type(ek); |
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1290 int arg_slots = type2size[arg_type]; |
710 | 1291 |
1292 // make room for the new argument: | |
1293 __ movl(rax_argslot, rcx_bmh_vmargslot); | |
1294 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
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1295 |
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1296 insert_arg_slots(_masm, arg_slots * stack_move_unit(), rax_argslot, rbx_temp, rdx_temp); |
710 | 1297 |
1298 // store bound argument into the new stack slot: | |
1846 | 1299 __ load_heap_oop(rbx_temp, rcx_bmh_argument); |
710 | 1300 if (arg_type == T_OBJECT) { |
1301 __ movptr(Address(rax_argslot, 0), rbx_temp); | |
1302 } else { | |
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1303 Address prim_value_addr(rbx_temp, java_lang_boxing_object::value_offset_in_bytes(arg_type)); |
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1304 move_typed_arg(_masm, arg_type, false, |
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1305 Address(rax_argslot, 0), |
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1306 prim_value_addr, |
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1307 rbx_temp, rdx_temp); |
710 | 1308 } |
1309 | |
1310 if (direct_to_method) { | |
1311 Register rbx_method = rbx_temp; | |
1846 | 1312 __ load_heap_oop(rbx_method, rcx_mh_vmtarget); |
710 | 1313 __ verify_oop(rbx_method); |
1314 __ jmp(rbx_method_fie); | |
1315 } else { | |
1846 | 1316 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1317 __ verify_oop(rcx_recv); |
1318 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
1319 } | |
1320 } | |
1321 break; | |
1322 | |
1323 case _adapter_retype_only: | |
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1324 case _adapter_retype_raw: |
710 | 1325 // immediately jump to the next MH layer: |
1846 | 1326 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1327 __ verify_oop(rcx_recv); |
1328 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
1329 // This is OK when all parameter types widen. | |
1330 // It is also OK when a return type narrows. | |
1331 break; | |
1332 | |
1333 case _adapter_check_cast: | |
1334 { | |
1335 // temps: | |
1336 Register rbx_klass = rbx_temp; // interesting AMH data | |
1337 | |
1338 // check a reference argument before jumping to the next layer of MH: | |
1339 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1340 vmarg = __ argument_address(rax_argslot); | |
1341 | |
1342 // What class are we casting to? | |
1846 | 1343 __ load_heap_oop(rbx_klass, rcx_amh_argument); // this is a Class object! |
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1344 load_klass_from_Class(_masm, rbx_klass); |
710 | 1345 |
1346 Label done; | |
1347 __ movptr(rdx_temp, vmarg); | |
1277 | 1348 __ testptr(rdx_temp, rdx_temp); |
1846 | 1349 __ jcc(Assembler::zero, done); // no cast if null |
710 | 1350 __ load_klass(rdx_temp, rdx_temp); |
1351 | |
1352 // live at this point: | |
1353 // - rbx_klass: klass required by the target method | |
1354 // - rdx_temp: argument klass to test | |
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1355 // - rcx_recv: adapter method handle |
710 | 1356 __ check_klass_subtype(rdx_temp, rbx_klass, rax_argslot, done); |
1357 | |
1358 // If we get here, the type check failed! | |
1359 // Call the wrong_method_type stub, passing the failing argument type in rax. | |
1360 Register rax_mtype = rax_argslot; | |
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1361 __ movl(rax_argslot, rcx_amh_vmargslot); // reload argslot field |
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1362 __ movptr(rdx_temp, vmarg); |
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1363 |
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1364 assert_different_registers(rarg2_required, rdx_temp); |
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1365 __ load_heap_oop(rarg2_required, rcx_amh_argument); // required class |
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1366 __ mov( rarg1_actual, rdx_temp); // bad object |
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1367 __ movl( rarg0_code, (int) Bytecodes::_checkcast); // who is complaining? |
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1368 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 1369 |
1370 __ bind(done); | |
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1371 // get the new MH: |
1846 | 1372 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1373 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
1374 } | |
1375 break; | |
1376 | |
1377 case _adapter_prim_to_prim: | |
1378 case _adapter_ref_to_prim: | |
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1379 case _adapter_prim_to_ref: |
710 | 1380 // handled completely by optimized cases |
1381 __ stop("init_AdapterMethodHandle should not issue this"); | |
1382 break; | |
1383 | |
1384 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim | |
1385 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim | |
1386 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim | |
1387 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim | |
1388 { | |
1389 // perform an in-place conversion to int or an int subword | |
1390 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1391 vmarg = __ argument_address(rax_argslot); | |
1392 | |
1393 switch (ek) { | |
1394 case _adapter_opt_i2i: | |
1395 __ movl(rdx_temp, vmarg); | |
1396 break; | |
1397 case _adapter_opt_l2i: | |
1398 { | |
1399 // just delete the extra slot; on a little-endian machine we keep the first | |
1400 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
1401 remove_arg_slots(_masm, -stack_move_unit(), | |
1402 rax_argslot, rbx_temp, rdx_temp); | |
1506 | 1403 vmarg = Address(rax_argslot, -Interpreter::stackElementSize); |
710 | 1404 __ movl(rdx_temp, vmarg); |
1405 } | |
1406 break; | |
1407 case _adapter_opt_unboxi: | |
1408 { | |
1409 // Load the value up from the heap. | |
1410 __ movptr(rdx_temp, vmarg); | |
1411 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT); | |
1412 #ifdef ASSERT | |
1413 for (int bt = T_BOOLEAN; bt < T_INT; bt++) { | |
1414 if (is_subword_type(BasicType(bt))) | |
1415 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), ""); | |
1416 } | |
1417 #endif | |
1418 __ null_check(rdx_temp, value_offset); | |
1419 __ movl(rdx_temp, Address(rdx_temp, value_offset)); | |
1420 // We load this as a word. Because we are little-endian, | |
1421 // the low bits will be correct, but the high bits may need cleaning. | |
1422 // The vminfo will guide us to clean those bits. | |
1423 } | |
1424 break; | |
1425 default: | |
1304 | 1426 ShouldNotReachHere(); |
710 | 1427 } |
1428 | |
1304 | 1429 // Do the requested conversion and store the value. |
710 | 1430 Register rbx_vminfo = rbx_temp; |
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1431 load_conversion_vminfo(_masm, rbx_vminfo, rcx_amh_conversion); |
710 | 1432 |
1433 // get the new MH: | |
1846 | 1434 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1435 // (now we are done with the old MH) |
1436 | |
1437 // original 32-bit vmdata word must be of this form: | |
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1438 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 | |
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1439 __ xchgptr(rcx, rbx_vminfo); // free rcx for shifts |
710 | 1440 __ shll(rdx_temp /*, rcx*/); |
1441 Label zero_extend, done; | |
1442 __ testl(rcx, CONV_VMINFO_SIGN_FLAG); | |
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1443 __ jccb(Assembler::zero, zero_extend); |
710 | 1444 |
1445 // this path is taken for int->byte, int->short | |
1446 __ sarl(rdx_temp /*, rcx*/); | |
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1447 __ jmpb(done); |
710 | 1448 |
1449 __ bind(zero_extend); | |
1450 // this is taken for int->char | |
1451 __ shrl(rdx_temp /*, rcx*/); | |
1452 | |
1453 __ bind(done); | |
1304 | 1454 __ movl(vmarg, rdx_temp); // Store the value. |
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1455 __ xchgptr(rcx, rbx_vminfo); // restore rcx_recv |
710 | 1456 |
1457 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
1458 } | |
1459 break; | |
1460 | |
1461 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim | |
1462 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim | |
1463 { | |
1464 // perform an in-place int-to-long or ref-to-long conversion | |
1465 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1466 | |
1467 // on a little-endian machine we keep the first slot and add another after | |
1468 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
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1469 insert_arg_slots(_masm, stack_move_unit(), |
710 | 1470 rax_argslot, rbx_temp, rdx_temp); |
1506 | 1471 Address vmarg1(rax_argslot, -Interpreter::stackElementSize); |
1472 Address vmarg2 = vmarg1.plus_disp(Interpreter::stackElementSize); | |
710 | 1473 |
1474 switch (ek) { | |
1475 case _adapter_opt_i2l: | |
1476 { | |
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1477 #ifdef _LP64 |
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1478 __ movslq(rdx_temp, vmarg1); // Load sign-extended |
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1479 __ movq(vmarg1, rdx_temp); // Store into first slot |
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1480 #else |
710 | 1481 __ movl(rdx_temp, vmarg1); |
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1482 __ sarl(rdx_temp, BitsPerInt - 1); // __ extend_sign() |
710 | 1483 __ movl(vmarg2, rdx_temp); // store second word |
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1484 #endif |
710 | 1485 } |
1486 break; | |
1487 case _adapter_opt_unboxl: | |
1488 { | |
1489 // Load the value up from the heap. | |
1490 __ movptr(rdx_temp, vmarg1); | |
1491 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG); | |
1492 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), ""); | |
1493 __ null_check(rdx_temp, value_offset); | |
1293
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1494 #ifdef _LP64 |
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1495 __ movq(rbx_temp, Address(rdx_temp, value_offset)); |
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1496 __ movq(vmarg1, rbx_temp); |
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1497 #else |
710 | 1498 __ movl(rbx_temp, Address(rdx_temp, value_offset + 0*BytesPerInt)); |
1499 __ movl(rdx_temp, Address(rdx_temp, value_offset + 1*BytesPerInt)); | |
1500 __ movl(vmarg1, rbx_temp); | |
1501 __ movl(vmarg2, rdx_temp); | |
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1502 #endif |
710 | 1503 } |
1504 break; | |
1505 default: | |
1304 | 1506 ShouldNotReachHere(); |
710 | 1507 } |
1508 | |
1846 | 1509 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1510 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
1511 } | |
1512 break; | |
1513 | |
1514 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim | |
1515 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim | |
1516 { | |
1517 // perform an in-place floating primitive conversion | |
1518 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1519 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
1520 if (ek == _adapter_opt_f2d) { | |
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1521 insert_arg_slots(_masm, stack_move_unit(), |
710 | 1522 rax_argslot, rbx_temp, rdx_temp); |
1523 } | |
1506 | 1524 Address vmarg(rax_argslot, -Interpreter::stackElementSize); |
710 | 1525 |
1526 #ifdef _LP64 | |
1527 if (ek == _adapter_opt_f2d) { | |
1528 __ movflt(xmm0, vmarg); | |
1529 __ cvtss2sd(xmm0, xmm0); | |
1530 __ movdbl(vmarg, xmm0); | |
1531 } else { | |
1532 __ movdbl(xmm0, vmarg); | |
1533 __ cvtsd2ss(xmm0, xmm0); | |
1534 __ movflt(vmarg, xmm0); | |
1535 } | |
1536 #else //_LP64 | |
1537 if (ek == _adapter_opt_f2d) { | |
1538 __ fld_s(vmarg); // load float to ST0 | |
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1539 __ fstp_d(vmarg); // store double |
1304 | 1540 } else { |
710 | 1541 __ fld_d(vmarg); // load double to ST0 |
1542 __ fstp_s(vmarg); // store single | |
1543 } | |
1544 #endif //_LP64 | |
1545 | |
1546 if (ek == _adapter_opt_d2f) { | |
1547 remove_arg_slots(_masm, -stack_move_unit(), | |
1548 rax_argslot, rbx_temp, rdx_temp); | |
1549 } | |
1550 | |
1846 | 1551 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1552 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
1553 } | |
1554 break; | |
1555 | |
1556 case _adapter_swap_args: | |
1557 case _adapter_rot_args: | |
1558 // handled completely by optimized cases | |
1559 __ stop("init_AdapterMethodHandle should not issue this"); | |
1560 break; | |
1561 | |
1562 case _adapter_opt_swap_1: | |
1563 case _adapter_opt_swap_2: | |
1564 case _adapter_opt_rot_1_up: | |
1565 case _adapter_opt_rot_1_down: | |
1566 case _adapter_opt_rot_2_up: | |
1567 case _adapter_opt_rot_2_down: | |
1568 { | |
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1569 int swap_slots = ek_adapter_opt_swap_slots(ek); |
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1570 int rotate = ek_adapter_opt_swap_mode(ek); |
710 | 1571 |
1572 // 'argslot' is the position of the first argument to swap | |
1573 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1574 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
1575 | |
1576 // 'vminfo' is the second | |
1577 Register rbx_destslot = rbx_temp; | |
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1578 load_conversion_vminfo(_masm, rbx_destslot, rcx_amh_conversion); |
710 | 1579 __ lea(rbx_destslot, __ argument_address(rbx_destslot)); |
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1580 if (VerifyMethodHandles) |
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1581 verify_argslot(_masm, rbx_destslot, "swap point must fall within current frame"); |
710 | 1582 |
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|
1583 assert(Interpreter::stackElementSize == wordSize, "else rethink use of wordSize here"); |
710 | 1584 if (!rotate) { |
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1585 // simple swap |
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1586 for (int i = 0; i < swap_slots; i++) { |
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1587 __ movptr(rdi_temp, Address(rax_argslot, i * wordSize)); |
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1588 __ movptr(rdx_temp, Address(rbx_destslot, i * wordSize)); |
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1589 __ movptr(Address(rax_argslot, i * wordSize), rdx_temp); |
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1590 __ movptr(Address(rbx_destslot, i * wordSize), rdi_temp); |
710 | 1591 } |
1592 } else { | |
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1593 // A rotate is actually pair of moves, with an "odd slot" (or pair) |
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1594 // changing place with a series of other slots. |
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1595 // First, push the "odd slot", which is going to get overwritten |
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1596 for (int i = swap_slots - 1; i >= 0; i--) { |
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1597 // handle one with rdi_temp instead of a push: |
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1598 if (i == 0) __ movptr(rdi_temp, Address(rax_argslot, i * wordSize)); |
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1599 else __ pushptr( Address(rax_argslot, i * wordSize)); |
710 | 1600 } |
1601 if (rotate > 0) { | |
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|
1602 // Here is rotate > 0: |
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1603 // (low mem) (high mem) |
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1604 // | dest: more_slots... | arg: odd_slot :arg+1 | |
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|
1605 // => |
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1606 // | dest: odd_slot | dest+1: more_slots... :arg+1 | |
710 | 1607 // work argslot down to destslot, copying contiguous data upwards |
1608 // pseudo-code: | |
1609 // rax = src_addr - swap_bytes | |
1610 // rbx = dest_addr | |
1611 // while (rax >= rbx) *(rax + swap_bytes) = *(rax + 0), rax--; | |
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|
1612 move_arg_slots_up(_masm, |
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1613 rbx_destslot, |
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1614 Address(rax_argslot, 0), |
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|
1615 swap_slots, |
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|
1616 rax_argslot, rdx_temp); |
710 | 1617 } else { |
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|
1618 // Here is the other direction, rotate < 0: |
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|
1619 // (low mem) (high mem) |
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1620 // | arg: odd_slot | arg+1: more_slots... :dest+1 | |
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|
1621 // => |
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1622 // | arg: more_slots... | dest: odd_slot :dest+1 | |
710 | 1623 // work argslot up to destslot, copying contiguous data downwards |
1624 // pseudo-code: | |
1625 // rax = src_addr + swap_bytes | |
1626 // rbx = dest_addr | |
1627 // while (rax <= rbx) *(rax - swap_bytes) = *(rax + 0), rax++; | |
3449
a9b8b43b115f
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|
1628 // dest_slot denotes an exclusive upper limit |
a9b8b43b115f
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|
1629 int limit_bias = OP_ROT_ARGS_DOWN_LIMIT_BIAS; |
a9b8b43b115f
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|
1630 if (limit_bias != 0) |
a9b8b43b115f
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|
1631 __ addptr(rbx_destslot, - limit_bias * wordSize); |
3363
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|
1632 move_arg_slots_down(_masm, |
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|
1633 Address(rax_argslot, swap_slots * wordSize), |
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|
1634 rbx_destslot, |
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|
1635 -swap_slots, |
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|
1636 rax_argslot, rdx_temp); |
3449
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|
1637 __ subptr(rbx_destslot, swap_slots * wordSize); |
710 | 1638 } |
1639 // pop the original first chunk into the destination slot, now free | |
3363
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|
1640 for (int i = 0; i < swap_slots; i++) { |
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|
1641 if (i == 0) __ movptr(Address(rbx_destslot, i * wordSize), rdi_temp); |
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|
1642 else __ popptr(Address(rbx_destslot, i * wordSize)); |
710 | 1643 } |
1644 } | |
1645 | |
1846 | 1646 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1647 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
1648 } | |
1649 break; | |
1650 | |
1651 case _adapter_dup_args: | |
1652 { | |
1653 // 'argslot' is the position of the first argument to duplicate | |
1654 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1655 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
1656 | |
1657 // 'stack_move' is negative number of words to duplicate | |
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|
1658 Register rdi_stack_move = rdi_temp; |
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|
1659 load_stack_move(_masm, rdi_stack_move, rcx_recv, true); |
710 | 1660 |
3363
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|
1661 if (VerifyMethodHandles) { |
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|
1662 verify_argslots(_masm, rdi_stack_move, rax_argslot, true, |
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|
1663 "copied argument(s) must fall within current frame"); |
710 | 1664 } |
1665 | |
3363
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|
1666 // insert location is always the bottom of the argument list: |
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|
1667 Address insert_location = __ argument_address(constant(0)); |
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|
1668 int pre_arg_words = insert_location.disp() / wordSize; // return PC is pushed |
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|
1669 assert(insert_location.base() == rsp, ""); |
710 | 1670 |
3363
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|
1671 __ negl(rdi_stack_move); |
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|
1672 push_arg_slots(_masm, rax_argslot, rdi_stack_move, |
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|
1673 pre_arg_words, rbx_temp, rdx_temp); |
710 | 1674 |
1846 | 1675 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1676 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
1677 } | |
1678 break; | |
1679 | |
1680 case _adapter_drop_args: | |
1681 { | |
1682 // 'argslot' is the position of the first argument to nuke | |
1683 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1684 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
1685 | |
1686 // (must do previous push after argslot address is taken) | |
1687 | |
1688 // 'stack_move' is number of words to drop | |
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|
1689 Register rdi_stack_move = rdi_temp; |
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|
1690 load_stack_move(_masm, rdi_stack_move, rcx_recv, false); |
710 | 1691 remove_arg_slots(_masm, rdi_stack_move, |
1692 rax_argslot, rbx_temp, rdx_temp); | |
1693 | |
1846 | 1694 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1695 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
1696 } | |
1697 break; | |
1698 | |
1699 case _adapter_collect_args: | |
3363
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|
1700 case _adapter_fold_args: |
710 | 1701 case _adapter_spread_args: |
1702 // handled completely by optimized cases | |
1703 __ stop("init_AdapterMethodHandle should not issue this"); | |
1704 break; | |
1705 | |
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diff
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|
1706 case _adapter_opt_collect_ref: |
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|
1707 case _adapter_opt_collect_int: |
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diff
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|
1708 case _adapter_opt_collect_long: |
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diff
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|
1709 case _adapter_opt_collect_float: |
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diff
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|
1710 case _adapter_opt_collect_double: |
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diff
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|
1711 case _adapter_opt_collect_void: |
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diff
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|
1712 case _adapter_opt_collect_0_ref: |
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diff
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|
1713 case _adapter_opt_collect_1_ref: |
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diff
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|
1714 case _adapter_opt_collect_2_ref: |
167b70ff3abc
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diff
changeset
|
1715 case _adapter_opt_collect_3_ref: |
167b70ff3abc
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diff
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|
1716 case _adapter_opt_collect_4_ref: |
167b70ff3abc
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diff
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|
1717 case _adapter_opt_collect_5_ref: |
167b70ff3abc
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diff
changeset
|
1718 case _adapter_opt_filter_S0_ref: |
167b70ff3abc
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never
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diff
changeset
|
1719 case _adapter_opt_filter_S1_ref: |
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never
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3336
diff
changeset
|
1720 case _adapter_opt_filter_S2_ref: |
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never
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diff
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|
1721 case _adapter_opt_filter_S3_ref: |
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never
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diff
changeset
|
1722 case _adapter_opt_filter_S4_ref: |
167b70ff3abc
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never
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3336
diff
changeset
|
1723 case _adapter_opt_filter_S5_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
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3336
diff
changeset
|
1724 case _adapter_opt_collect_2_S0_ref: |
167b70ff3abc
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never
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3336
diff
changeset
|
1725 case _adapter_opt_collect_2_S1_ref: |
167b70ff3abc
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never
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3336
diff
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|
1726 case _adapter_opt_collect_2_S2_ref: |
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never
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3336
diff
changeset
|
1727 case _adapter_opt_collect_2_S3_ref: |
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never
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3336
diff
changeset
|
1728 case _adapter_opt_collect_2_S4_ref: |
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never
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diff
changeset
|
1729 case _adapter_opt_collect_2_S5_ref: |
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never
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diff
changeset
|
1730 case _adapter_opt_fold_ref: |
167b70ff3abc
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never
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3336
diff
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|
1731 case _adapter_opt_fold_int: |
167b70ff3abc
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3336
diff
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|
1732 case _adapter_opt_fold_long: |
167b70ff3abc
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never
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3336
diff
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|
1733 case _adapter_opt_fold_float: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
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3336
diff
changeset
|
1734 case _adapter_opt_fold_double: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
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3336
diff
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|
1735 case _adapter_opt_fold_void: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
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3336
diff
changeset
|
1736 case _adapter_opt_fold_1_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
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3336
diff
changeset
|
1737 case _adapter_opt_fold_2_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
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3336
diff
changeset
|
1738 case _adapter_opt_fold_3_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
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3336
diff
changeset
|
1739 case _adapter_opt_fold_4_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
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3336
diff
changeset
|
1740 case _adapter_opt_fold_5_ref: |
167b70ff3abc
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never
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diff
changeset
|
1741 { |
167b70ff3abc
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never
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3336
diff
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|
1742 // Given a fresh incoming stack frame, build a new ricochet frame. |
167b70ff3abc
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never
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3336
diff
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|
1743 // On entry, TOS points at a return PC, and RBP is the callers frame ptr. |
167b70ff3abc
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3336
diff
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|
1744 // RSI/R13 has the caller's exact stack pointer, which we must also preserve. |
167b70ff3abc
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never
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3336
diff
changeset
|
1745 // RCX contains an AdapterMethodHandle of the indicated kind. |
167b70ff3abc
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never
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3336
diff
changeset
|
1746 |
167b70ff3abc
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diff
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|
1747 // Relevant AMH fields: |
167b70ff3abc
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never
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3336
diff
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|
1748 // amh.vmargslot: |
167b70ff3abc
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diff
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|
1749 // points to the trailing edge of the arguments |
167b70ff3abc
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never
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3336
diff
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|
1750 // to filter, collect, or fold. For a boxing operation, |
167b70ff3abc
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never
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3336
diff
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|
1751 // it points just after the single primitive value. |
167b70ff3abc
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never
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diff
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|
1752 // amh.argument: |
167b70ff3abc
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never
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diff
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|
1753 // recursively called MH, on |collect| arguments |
167b70ff3abc
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never
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diff
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|
1754 // amh.vmtarget: |
167b70ff3abc
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never
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3336
diff
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|
1755 // final destination MH, on return value, etc. |
167b70ff3abc
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never
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3336
diff
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|
1756 // amh.conversion.dest: |
167b70ff3abc
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never
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3336
diff
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|
1757 // tells what is the type of the return value |
167b70ff3abc
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never
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3336
diff
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|
1758 // (not needed here, since dest is also derived from ek) |
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never
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3336
diff
changeset
|
1759 // amh.conversion.vminfo: |
167b70ff3abc
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never
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diff
changeset
|
1760 // points to the trailing edge of the return value |
167b70ff3abc
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never
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diff
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|
1761 // when the vmtarget is to be called; this is |
167b70ff3abc
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never
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3336
diff
changeset
|
1762 // equal to vmargslot + (retained ? |collect| : 0) |
167b70ff3abc
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never
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3336
diff
changeset
|
1763 |
167b70ff3abc
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diff
changeset
|
1764 // Pass 0 or more argument slots to the recursive target. |
167b70ff3abc
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never
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3336
diff
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|
1765 int collect_count_constant = ek_adapter_opt_collect_count(ek); |
167b70ff3abc
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3336
diff
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|
1766 |
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diff
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|
1767 // The collected arguments are copied from the saved argument list: |
167b70ff3abc
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1768 int collect_slot_constant = ek_adapter_opt_collect_slot(ek); |
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1769 |
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1770 assert(ek_orig == _adapter_collect_args || |
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1771 ek_orig == _adapter_fold_args, ""); |
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1772 bool retain_original_args = (ek_orig == _adapter_fold_args); |
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1773 |
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1774 // The return value is replaced (or inserted) at the 'vminfo' argslot. |
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1775 // Sometimes we can compute this statically. |
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1776 int dest_slot_constant = -1; |
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1777 if (!retain_original_args) |
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1778 dest_slot_constant = collect_slot_constant; |
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1779 else if (collect_slot_constant >= 0 && collect_count_constant >= 0) |
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1780 // We are preserving all the arguments, and the return value is prepended, |
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1781 // so the return slot is to the left (above) the |collect| sequence. |
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1782 dest_slot_constant = collect_slot_constant + collect_count_constant; |
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1783 |
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1784 // Replace all those slots by the result of the recursive call. |
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1785 // The result type can be one of ref, int, long, float, double, void. |
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1786 // In the case of void, nothing is pushed on the stack after return. |
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1787 BasicType dest = ek_adapter_opt_collect_type(ek); |
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1788 assert(dest == type2wfield[dest], "dest is a stack slot type"); |
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1789 int dest_count = type2size[dest]; |
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1790 assert(dest_count == 1 || dest_count == 2 || (dest_count == 0 && dest == T_VOID), "dest has a size"); |
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1791 |
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1792 // Choose a return continuation. |
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1793 EntryKind ek_ret = _adapter_opt_return_any; |
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1794 if (dest != T_CONFLICT && OptimizeMethodHandles) { |
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1795 switch (dest) { |
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1796 case T_INT : ek_ret = _adapter_opt_return_int; break; |
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1797 case T_LONG : ek_ret = _adapter_opt_return_long; break; |
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1798 case T_FLOAT : ek_ret = _adapter_opt_return_float; break; |
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1799 case T_DOUBLE : ek_ret = _adapter_opt_return_double; break; |
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1800 case T_OBJECT : ek_ret = _adapter_opt_return_ref; break; |
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1801 case T_VOID : ek_ret = _adapter_opt_return_void; break; |
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1802 default : ShouldNotReachHere(); |
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1803 } |
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1804 if (dest == T_OBJECT && dest_slot_constant >= 0) { |
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1805 EntryKind ek_try = EntryKind(_adapter_opt_return_S0_ref + dest_slot_constant); |
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1806 if (ek_try <= _adapter_opt_return_LAST && |
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1807 ek_adapter_opt_return_slot(ek_try) == dest_slot_constant) { |
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1808 ek_ret = ek_try; |
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1809 } |
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1810 } |
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1811 assert(ek_adapter_opt_return_type(ek_ret) == dest, ""); |
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1812 } |
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1813 |
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1814 // Already pushed: ... keep1 | collect | keep2 | sender_pc | |
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1815 // push(sender_pc); |
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1816 |
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1817 // Compute argument base: |
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1818 Register rax_argv = rax_argslot; |
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1819 __ lea(rax_argv, __ argument_address(constant(0))); |
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1820 |
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1821 // Push a few extra argument words, if we need them to store the return value. |
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1822 { |
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1823 int extra_slots = 0; |
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1824 if (retain_original_args) { |
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1825 extra_slots = dest_count; |
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1826 } else if (collect_count_constant == -1) { |
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1827 extra_slots = dest_count; // collect_count might be zero; be generous |
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1828 } else if (dest_count > collect_count_constant) { |
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1829 extra_slots = (dest_count - collect_count_constant); |
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1830 } else { |
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1831 // else we know we have enough dead space in |collect| to repurpose for return values |
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1832 } |
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1833 DEBUG_ONLY(extra_slots += 1); |
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1834 if (extra_slots > 0) { |
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1835 __ pop(rbx_temp); // return value |
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1836 __ subptr(rsp, (extra_slots * Interpreter::stackElementSize)); |
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1837 // Push guard word #2 in debug mode. |
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1838 DEBUG_ONLY(__ movptr(Address(rsp, 0), (int32_t) RicochetFrame::MAGIC_NUMBER_2)); |
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1839 __ push(rbx_temp); |
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1840 } |
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1841 } |
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1842 |
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1843 RicochetFrame::enter_ricochet_frame(_masm, rcx_recv, rax_argv, |
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1844 entry(ek_ret)->from_interpreted_entry(), rbx_temp); |
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1845 |
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1846 // Now pushed: ... keep1 | collect | keep2 | RF | |
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1847 // some handy frame slots: |
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1848 Address exact_sender_sp_addr = RicochetFrame::frame_address(RicochetFrame::exact_sender_sp_offset_in_bytes()); |
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1849 Address conversion_addr = RicochetFrame::frame_address(RicochetFrame::conversion_offset_in_bytes()); |
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1850 Address saved_args_base_addr = RicochetFrame::frame_address(RicochetFrame::saved_args_base_offset_in_bytes()); |
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1851 |
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1852 #ifdef ASSERT |
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1853 if (VerifyMethodHandles && dest != T_CONFLICT) { |
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1854 BLOCK_COMMENT("verify AMH.conv.dest"); |
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1855 load_conversion_dest_type(_masm, rbx_temp, conversion_addr); |
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|
1856 Label L_dest_ok; |
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1857 __ cmpl(rbx_temp, (int) dest); |
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|
1858 __ jcc(Assembler::equal, L_dest_ok); |
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1859 if (dest == T_INT) { |
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1860 for (int bt = T_BOOLEAN; bt < T_INT; bt++) { |
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1861 if (is_subword_type(BasicType(bt))) { |
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|
1862 __ cmpl(rbx_temp, (int) bt); |
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1863 __ jcc(Assembler::equal, L_dest_ok); |
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1864 } |
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1865 } |
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|
1866 } |
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1867 __ stop("bad dest in AMH.conv"); |
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1868 __ BIND(L_dest_ok); |
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1869 } |
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1870 #endif //ASSERT |
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|
1871 |
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1872 // Find out where the original copy of the recursive argument sequence begins. |
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|
1873 Register rax_coll = rax_argv; |
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|
1874 { |
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1875 RegisterOrConstant collect_slot = collect_slot_constant; |
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1876 if (collect_slot_constant == -1) { |
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1877 __ movl(rdi_temp, rcx_amh_vmargslot); |
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|
1878 collect_slot = rdi_temp; |
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|
1879 } |
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1880 if (collect_slot_constant != 0) |
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1881 __ lea(rax_coll, Address(rax_argv, collect_slot, Interpreter::stackElementScale())); |
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1882 // rax_coll now points at the trailing edge of |collect| and leading edge of |keep2| |
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1883 } |
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|
1884 |
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1885 // Replace the old AMH with the recursive MH. (No going back now.) |
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1886 // In the case of a boxing call, the recursive call is to a 'boxer' method, |
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1887 // such as Integer.valueOf or Long.valueOf. In the case of a filter |
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1888 // or collect call, it will take one or more arguments, transform them, |
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1889 // and return some result, to store back into argument_base[vminfo]. |
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1890 __ load_heap_oop(rcx_recv, rcx_amh_argument); |
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1891 if (VerifyMethodHandles) verify_method_handle(_masm, rcx_recv); |
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|
1892 |
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1893 // Push a space for the recursively called MH first: |
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1894 __ push((int32_t)NULL_WORD); |
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|
1895 |
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1896 // Calculate |collect|, the number of arguments we are collecting. |
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1897 Register rdi_collect_count = rdi_temp; |
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|
1898 RegisterOrConstant collect_count; |
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1899 if (collect_count_constant >= 0) { |
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1900 collect_count = collect_count_constant; |
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1901 } else { |
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1902 __ load_method_handle_vmslots(rdi_collect_count, rcx_recv, rdx_temp); |
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1903 collect_count = rdi_collect_count; |
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1904 } |
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|
1905 #ifdef ASSERT |
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1906 if (VerifyMethodHandles && collect_count_constant >= 0) { |
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1907 __ load_method_handle_vmslots(rbx_temp, rcx_recv, rdx_temp); |
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1908 Label L_count_ok; |
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1909 __ cmpl(rbx_temp, collect_count_constant); |
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1910 __ jcc(Assembler::equal, L_count_ok); |
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1911 __ stop("bad vminfo in AMH.conv"); |
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1912 __ BIND(L_count_ok); |
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1913 } |
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1914 #endif //ASSERT |
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1915 |
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1916 // copy |collect| slots directly to TOS: |
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1917 push_arg_slots(_masm, rax_coll, collect_count, 0, rbx_temp, rdx_temp); |
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1918 // Now pushed: ... keep1 | collect | keep2 | RF... | collect | |
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1919 // rax_coll still points at the trailing edge of |collect| and leading edge of |keep2| |
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1920 |
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1921 // If necessary, adjust the saved arguments to make room for the eventual return value. |
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1922 // Normal adjustment: ... keep1 | +dest+ | -collect- | keep2 | RF... | collect | |
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1923 // If retaining args: ... keep1 | +dest+ | collect | keep2 | RF... | collect | |
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1924 // In the non-retaining case, this might move keep2 either up or down. |
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1925 // We don't have to copy the whole | RF... collect | complex, |
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1926 // but we must adjust RF.saved_args_base. |
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1927 // Also, from now on, we will forget about the original copy of |collect|. |
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1928 // If we are retaining it, we will treat it as part of |keep2|. |
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1929 // For clarity we will define |keep3| = |collect|keep2| or |keep2|. |
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1930 |
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1931 BLOCK_COMMENT("adjust trailing arguments {"); |
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1932 // Compare the sizes of |+dest+| and |-collect-|, which are opposed opening and closing movements. |
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1933 int open_count = dest_count; |
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1934 RegisterOrConstant close_count = collect_count_constant; |
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1935 Register rdi_close_count = rdi_collect_count; |
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1936 if (retain_original_args) { |
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1937 close_count = constant(0); |
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1938 } else if (collect_count_constant == -1) { |
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1939 close_count = rdi_collect_count; |
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1940 } |
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1941 |
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1942 // How many slots need moving? This is simply dest_slot (0 => no |keep3|). |
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1943 RegisterOrConstant keep3_count; |
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1944 Register rsi_keep3_count = rsi; // can repair from RF.exact_sender_sp |
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1945 if (dest_slot_constant >= 0) { |
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1946 keep3_count = dest_slot_constant; |
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1947 } else { |
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1948 load_conversion_vminfo(_masm, rsi_keep3_count, conversion_addr); |
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1949 keep3_count = rsi_keep3_count; |
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1950 } |
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1951 #ifdef ASSERT |
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1952 if (VerifyMethodHandles && dest_slot_constant >= 0) { |
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1953 load_conversion_vminfo(_masm, rbx_temp, conversion_addr); |
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1954 Label L_vminfo_ok; |
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1955 __ cmpl(rbx_temp, dest_slot_constant); |
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1956 __ jcc(Assembler::equal, L_vminfo_ok); |
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1957 __ stop("bad vminfo in AMH.conv"); |
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1958 __ BIND(L_vminfo_ok); |
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1959 } |
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1960 #endif //ASSERT |
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1961 |
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1962 // tasks remaining: |
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1963 bool move_keep3 = (!keep3_count.is_constant() || keep3_count.as_constant() != 0); |
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1964 bool stomp_dest = (NOT_DEBUG(dest == T_OBJECT) DEBUG_ONLY(dest_count != 0)); |
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1965 bool fix_arg_base = (!close_count.is_constant() || open_count != close_count.as_constant()); |
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1966 |
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1967 if (stomp_dest | fix_arg_base) { |
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1968 // we will probably need an updated rax_argv value |
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1969 if (collect_slot_constant >= 0) { |
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1970 // rax_coll already holds the leading edge of |keep2|, so tweak it |
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1971 assert(rax_coll == rax_argv, "elided a move"); |
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1972 if (collect_slot_constant != 0) |
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1973 __ subptr(rax_argv, collect_slot_constant * Interpreter::stackElementSize); |
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1974 } else { |
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1975 // Just reload from RF.saved_args_base. |
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1976 __ movptr(rax_argv, saved_args_base_addr); |
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1977 } |
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1978 } |
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1979 |
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1980 // Old and new argument locations (based at slot 0). |
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1981 // Net shift (&new_argv - &old_argv) is (close_count - open_count). |
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1982 bool zero_open_count = (open_count == 0); // remember this bit of info |
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1983 if (move_keep3 && fix_arg_base) { |
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1984 // It will be easier to have everything in one register: |
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1985 if (close_count.is_register()) { |
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1986 // Deduct open_count from close_count register to get a clean +/- value. |
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1987 __ subptr(close_count.as_register(), open_count); |
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1988 } else { |
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1989 close_count = close_count.as_constant() - open_count; |
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1990 } |
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1991 open_count = 0; |
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1992 } |
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1993 Address old_argv(rax_argv, 0); |
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1994 Address new_argv(rax_argv, close_count, Interpreter::stackElementScale(), |
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1995 - open_count * Interpreter::stackElementSize); |
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1996 |
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1997 // First decide if any actual data are to be moved. |
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1998 // We can skip if (a) |keep3| is empty, or (b) the argument list size didn't change. |
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1999 // (As it happens, all movements involve an argument list size change.) |
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2000 |
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2001 // If there are variable parameters, use dynamic checks to skip around the whole mess. |
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2002 Label L_done; |
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2003 if (!keep3_count.is_constant()) { |
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2004 __ testl(keep3_count.as_register(), keep3_count.as_register()); |
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2005 __ jcc(Assembler::zero, L_done); |
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2006 } |
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2007 if (!close_count.is_constant()) { |
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2008 __ cmpl(close_count.as_register(), open_count); |
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2009 __ jcc(Assembler::equal, L_done); |
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2010 } |
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2011 |
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2012 if (move_keep3 && fix_arg_base) { |
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2013 bool emit_move_down = false, emit_move_up = false, emit_guard = false; |
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2014 if (!close_count.is_constant()) { |
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2015 emit_move_down = emit_guard = !zero_open_count; |
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2016 emit_move_up = true; |
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2017 } else if (open_count != close_count.as_constant()) { |
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2018 emit_move_down = (open_count > close_count.as_constant()); |
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2019 emit_move_up = !emit_move_down; |
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2020 } |
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2021 Label L_move_up; |
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2022 if (emit_guard) { |
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2023 __ cmpl(close_count.as_register(), open_count); |
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2024 __ jcc(Assembler::greater, L_move_up); |
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2025 } |
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2026 |
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2027 if (emit_move_down) { |
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2028 // Move arguments down if |+dest+| > |-collect-| |
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2029 // (This is rare, except when arguments are retained.) |
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2030 // This opens space for the return value. |
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2031 if (keep3_count.is_constant()) { |
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2032 for (int i = 0; i < keep3_count.as_constant(); i++) { |
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2033 __ movptr(rdx_temp, old_argv.plus_disp(i * Interpreter::stackElementSize)); |
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2034 __ movptr( new_argv.plus_disp(i * Interpreter::stackElementSize), rdx_temp); |
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2035 } |
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2036 } else { |
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2037 Register rbx_argv_top = rbx_temp; |
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2038 __ lea(rbx_argv_top, old_argv.plus_disp(keep3_count, Interpreter::stackElementScale())); |
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2039 move_arg_slots_down(_masm, |
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2040 old_argv, // beginning of old argv |
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2041 rbx_argv_top, // end of old argv |
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2042 close_count, // distance to move down (must be negative) |
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2043 rax_argv, rdx_temp); |
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2044 // Used argv as an iteration variable; reload from RF.saved_args_base. |
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parents:
3336
diff
changeset
|
2045 __ movptr(rax_argv, saved_args_base_addr); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2046 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2047 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2048 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2049 if (emit_guard) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2050 __ jmp(L_done); // assumes emit_move_up is true also |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2051 __ BIND(L_move_up); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2052 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2053 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2054 if (emit_move_up) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2055 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2056 // Move arguments up if |+dest+| < |-collect-| |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2057 // (This is usual, except when |keep3| is empty.) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2058 // 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
|
2059 if (keep3_count.is_constant()) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2060 for (int i = keep3_count.as_constant() - 1; i >= 0; i--) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2061 __ movptr(rdx_temp, old_argv.plus_disp(i * Interpreter::stackElementSize)); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2062 __ movptr( new_argv.plus_disp(i * Interpreter::stackElementSize), rdx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2063 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2064 } else { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2065 Address argv_top = old_argv.plus_disp(keep3_count, Interpreter::stackElementScale()); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2066 move_arg_slots_up(_masm, |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2067 rax_argv, // beginning of old argv |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2068 argv_top, // end of old argv |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2069 close_count, // distance to move up (must be positive) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2070 rbx_temp, rdx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2071 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2072 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2073 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2074 __ BIND(L_done); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2075 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2076 if (fix_arg_base) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2077 // adjust RF.saved_args_base by adding (close_count - open_count) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2078 if (!new_argv.is_same_address(Address(rax_argv, 0))) |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2079 __ lea(rax_argv, new_argv); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2080 __ movptr(saved_args_base_addr, rax_argv); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2081 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2082 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2083 if (stomp_dest) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2084 // Stomp the return slot, so it doesn't hold garbage. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2085 // This isn't strictly necessary, but it may help detect bugs. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2086 int forty_two = RicochetFrame::RETURN_VALUE_PLACEHOLDER; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2087 __ movptr(Address(rax_argv, keep3_count, Address::times_ptr), |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2088 (int32_t) forty_two); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2089 // uses rsi_keep3_count |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2090 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2091 BLOCK_COMMENT("} adjust trailing arguments"); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2092 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2093 BLOCK_COMMENT("do_recursive_call"); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2094 __ mov(saved_last_sp, rsp); // set rsi/r13 for callee |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2095 __ pushptr(ExternalAddress(SharedRuntime::ricochet_blob()->bounce_addr()).addr()); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2096 // The globally unique bounce address has two purposes: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2097 // 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
|
2098 // 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
|
2099 // to the return handler. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2100 // 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
|
2101 // 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
|
2102 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2103 // State during recursive call: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2104 // ... keep1 | dest | dest=42 | keep3 | RF... | collect | bounce_pc | |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2105 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2106 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2107 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2108 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2109 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2110 case _adapter_opt_return_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2111 case _adapter_opt_return_int: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2112 case _adapter_opt_return_long: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2113 case _adapter_opt_return_float: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2114 case _adapter_opt_return_double: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2115 case _adapter_opt_return_void: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2116 case _adapter_opt_return_S0_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2117 case _adapter_opt_return_S1_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2118 case _adapter_opt_return_S2_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2119 case _adapter_opt_return_S3_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2120 case _adapter_opt_return_S4_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2121 case _adapter_opt_return_S5_ref: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2122 { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2123 BasicType dest_type_constant = ek_adapter_opt_return_type(ek); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2124 int dest_slot_constant = ek_adapter_opt_return_slot(ek); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2125 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2126 if (VerifyMethodHandles) RicochetFrame::verify_clean(_masm); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2127 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2128 if (dest_slot_constant == -1) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2129 // The current stub is a general handler for this dest_type. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2130 // It can be called from _adapter_opt_return_any below. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2131 // Stash the address in a little table. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2132 assert((dest_type_constant & CONV_TYPE_MASK) == dest_type_constant, "oob"); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2133 address return_handler = __ pc(); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2134 _adapter_return_handlers[dest_type_constant] = return_handler; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2135 if (dest_type_constant == T_INT) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2136 // do the subword types too |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2137 for (int bt = T_BOOLEAN; bt < T_INT; bt++) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2138 if (is_subword_type(BasicType(bt)) && |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2139 _adapter_return_handlers[bt] == NULL) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2140 _adapter_return_handlers[bt] = return_handler; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2141 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2142 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2143 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2144 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2145 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2146 Register rbx_arg_base = rbx_temp; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2147 assert_different_registers(rax, rdx, // possibly live return value registers |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2148 rdi_temp, rbx_arg_base); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2149 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2150 Address conversion_addr = RicochetFrame::frame_address(RicochetFrame::conversion_offset_in_bytes()); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2151 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
|
2152 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2153 __ movptr(rbx_arg_base, saved_args_base_addr); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2154 RegisterOrConstant dest_slot = dest_slot_constant; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2155 if (dest_slot_constant == -1) { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2156 load_conversion_vminfo(_masm, rdi_temp, conversion_addr); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2157 dest_slot = rdi_temp; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2158 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2159 // Store the result back into the argslot. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2160 // This code uses the interpreter calling sequence, in which the return value |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2161 // is usually left in the TOS register, as defined by InterpreterMacroAssembler::pop. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2162 // There are certain irregularities with floating point values, which can be seen |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2163 // in TemplateInterpreterGenerator::generate_return_entry_for. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2164 move_return_value(_masm, dest_type_constant, Address(rbx_arg_base, dest_slot, Interpreter::stackElementScale())); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2165 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2166 RicochetFrame::leave_ricochet_frame(_masm, rcx_recv, rbx_arg_base, rdx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2167 __ push(rdx_temp); // repush the return PC |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2168 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2169 // Load the final target and go. |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2170 if (VerifyMethodHandles) verify_method_handle(_masm, rcx_recv); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2171 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2172 __ hlt(); // -------------------- |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2173 break; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2174 } |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2175 |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2176 case _adapter_opt_return_any: |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2177 { |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2178 if (VerifyMethodHandles) RicochetFrame::verify_clean(_masm); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2179 Register rdi_conv = rdi_temp; |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2180 assert_different_registers(rax, rdx, // possibly live return value registers |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2181 rdi_conv, rbx_temp); |
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 Address conversion_addr = RicochetFrame::frame_address(RicochetFrame::conversion_offset_in_bytes()); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2184 load_conversion_dest_type(_masm, rdi_conv, conversion_addr); |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3336
diff
changeset
|
2185 __ lea(rbx_temp, ExternalAddress((address) &_adapter_return_handlers[0])); |
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2186 __ movptr(rbx_temp, Address(rbx_temp, rdi_conv, Address::times_ptr)); |
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|
2187 |
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|
2188 #ifdef ASSERT |
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|
2189 { Label L_badconv; |
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|
2190 __ testptr(rbx_temp, rbx_temp); |
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|
2191 __ jccb(Assembler::zero, L_badconv); |
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|
2192 __ jmp(rbx_temp); |
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|
2193 __ bind(L_badconv); |
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|
2194 __ stop("bad method handle return"); |
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|
2195 } |
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2196 #else //ASSERT |
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2197 __ jmp(rbx_temp); |
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|
2198 #endif //ASSERT |
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|
2199 break; |
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|
2200 } |
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2201 |
710 | 2202 case _adapter_opt_spread_0: |
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|
2203 case _adapter_opt_spread_1_ref: |
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|
2204 case _adapter_opt_spread_2_ref: |
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|
2205 case _adapter_opt_spread_3_ref: |
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2206 case _adapter_opt_spread_4_ref: |
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|
2207 case _adapter_opt_spread_5_ref: |
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|
2208 case _adapter_opt_spread_ref: |
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|
2209 case _adapter_opt_spread_byte: |
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|
2210 case _adapter_opt_spread_char: |
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2211 case _adapter_opt_spread_short: |
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|
2212 case _adapter_opt_spread_int: |
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|
2213 case _adapter_opt_spread_long: |
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|
2214 case _adapter_opt_spread_float: |
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|
2215 case _adapter_opt_spread_double: |
710 | 2216 { |
2217 // spread an array out into a group of arguments | |
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|
2218 int length_constant = ek_adapter_opt_spread_count(ek); |
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|
2219 bool length_can_be_zero = (length_constant == 0); |
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2220 if (length_constant < 0) { |
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2221 // some adapters with variable length must handle the zero case |
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2222 if (!OptimizeMethodHandles || |
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|
2223 ek_adapter_opt_spread_type(ek) != T_OBJECT) |
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|
2224 length_can_be_zero = true; |
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|
2225 } |
710 | 2226 |
2227 // find the address of the array argument | |
2228 __ movl(rax_argslot, rcx_amh_vmargslot); | |
2229 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
2230 | |
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|
2231 // grab another temp |
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|
2232 Register rsi_temp = rsi; |
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2233 { if (rsi_temp == saved_last_sp) __ push(saved_last_sp); } |
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2234 // (preceding push must be done after argslot address is taken!) |
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|
2235 #define UNPUSH_RSI \ |
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|
2236 { if (rsi_temp == saved_last_sp) __ pop(saved_last_sp); } |
710 | 2237 |
2238 // arx_argslot points both to the array and to the first output arg | |
2239 vmarg = Address(rax_argslot, 0); | |
2240 | |
2241 // Get the array value. | |
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2242 Register rsi_array = rsi_temp; |
710 | 2243 Register rdx_array_klass = rdx_temp; |
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2244 BasicType elem_type = ek_adapter_opt_spread_type(ek); |
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2245 int elem_slots = type2size[elem_type]; // 1 or 2 |
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2246 int array_slots = 1; // array is always a T_OBJECT |
710 | 2247 int length_offset = arrayOopDesc::length_offset_in_bytes(); |
2248 int elem0_offset = arrayOopDesc::base_offset_in_bytes(elem_type); | |
2249 __ movptr(rsi_array, vmarg); | |
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2250 |
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2251 Label L_array_is_empty, L_insert_arg_space, L_copy_args, L_args_done; |
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2252 if (length_can_be_zero) { |
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2253 // handle the null pointer case, if zero is allowed |
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2254 Label L_skip; |
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2255 if (length_constant < 0) { |
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|
2256 load_conversion_vminfo(_masm, rbx_temp, rcx_amh_conversion); |
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2257 __ testl(rbx_temp, rbx_temp); |
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2258 __ jcc(Assembler::notZero, L_skip); |
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|
2259 } |
710 | 2260 __ testptr(rsi_array, rsi_array); |
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2261 __ jcc(Assembler::zero, L_array_is_empty); |
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|
2262 __ bind(L_skip); |
710 | 2263 } |
2264 __ null_check(rsi_array, oopDesc::klass_offset_in_bytes()); | |
2265 __ load_klass(rdx_array_klass, rsi_array); | |
2266 | |
2267 // Check the array type. | |
2268 Register rbx_klass = rbx_temp; | |
1846 | 2269 __ load_heap_oop(rbx_klass, rcx_amh_argument); // this is a Class object! |
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|
2270 load_klass_from_Class(_masm, rbx_klass); |
710 | 2271 |
2272 Label ok_array_klass, bad_array_klass, bad_array_length; | |
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2273 __ check_klass_subtype(rdx_array_klass, rbx_klass, rdi_temp, ok_array_klass); |
710 | 2274 // If we get here, the type check failed! |
2275 __ jmp(bad_array_klass); | |
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|
2276 __ BIND(ok_array_klass); |
710 | 2277 |
2278 // Check length. | |
2279 if (length_constant >= 0) { | |
2280 __ cmpl(Address(rsi_array, length_offset), length_constant); | |
2281 } else { | |
2282 Register rbx_vminfo = rbx_temp; | |
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2283 load_conversion_vminfo(_masm, rbx_vminfo, rcx_amh_conversion); |
710 | 2284 __ cmpl(rbx_vminfo, Address(rsi_array, length_offset)); |
2285 } | |
2286 __ jcc(Assembler::notEqual, bad_array_length); | |
2287 | |
2288 Register rdx_argslot_limit = rdx_temp; | |
2289 | |
2290 // Array length checks out. Now insert any required stack slots. | |
2291 if (length_constant == -1) { | |
2292 // Form a pointer to the end of the affected region. | |
1506 | 2293 __ lea(rdx_argslot_limit, Address(rax_argslot, Interpreter::stackElementSize)); |
710 | 2294 // 'stack_move' is negative number of words to insert |
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|
2295 // This number already accounts for elem_slots. |
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|
2296 Register rdi_stack_move = rdi_temp; |
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|
2297 load_stack_move(_masm, rdi_stack_move, rcx_recv, true); |
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|
2298 __ cmpptr(rdi_stack_move, 0); |
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diff
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|
2299 assert(stack_move_unit() < 0, "else change this comparison"); |
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|
2300 __ jcc(Assembler::less, L_insert_arg_space); |
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|
2301 __ jcc(Assembler::equal, L_copy_args); |
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|
2302 // single argument case, with no array movement |
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|
2303 __ BIND(L_array_is_empty); |
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|
2304 remove_arg_slots(_masm, -stack_move_unit() * array_slots, |
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|
2305 rax_argslot, rbx_temp, rdx_temp); |
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|
2306 __ jmp(L_args_done); // no spreading to do |
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|
2307 __ BIND(L_insert_arg_space); |
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|
2308 // come here in the usual case, stack_move < 0 (2 or more spread arguments) |
710 | 2309 Register rsi_temp = rsi_array; // spill this |
3363
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|
2310 insert_arg_slots(_masm, rdi_stack_move, |
710 | 2311 rax_argslot, rbx_temp, rsi_temp); |
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|
2312 // reload the array since rsi was killed |
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|
2313 // reload from rdx_argslot_limit since rax_argslot is now decremented |
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|
2314 __ movptr(rsi_array, Address(rdx_argslot_limit, -Interpreter::stackElementSize)); |
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|
2315 } else if (length_constant >= 1) { |
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|
2316 int new_slots = (length_constant * elem_slots) - array_slots; |
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|
2317 insert_arg_slots(_masm, new_slots * stack_move_unit(), |
710 | 2318 rax_argslot, rbx_temp, rdx_temp); |
2319 } else if (length_constant == 0) { | |
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|
2320 __ BIND(L_array_is_empty); |
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|
2321 remove_arg_slots(_masm, -stack_move_unit() * array_slots, |
710 | 2322 rax_argslot, rbx_temp, rdx_temp); |
3363
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|
2323 } else { |
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|
2324 ShouldNotReachHere(); |
710 | 2325 } |
2326 | |
2327 // Copy from the array to the new slots. | |
2328 // Note: Stack change code preserves integrity of rax_argslot pointer. | |
2329 // So even after slot insertions, rax_argslot still points to first argument. | |
3363
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|
2330 // Beware: Arguments that are shallow on the stack are deep in the array, |
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|
2331 // and vice versa. So a downward-growing stack (the usual) has to be copied |
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|
2332 // elementwise in reverse order from the source array. |
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diff
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|
2333 __ BIND(L_copy_args); |
710 | 2334 if (length_constant == -1) { |
2335 // [rax_argslot, rdx_argslot_limit) is the area we are inserting into. | |
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|
2336 // Array element [0] goes at rdx_argslot_limit[-wordSize]. |
710 | 2337 Register rsi_source = rsi_array; |
2338 __ lea(rsi_source, Address(rsi_array, elem0_offset)); | |
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|
2339 Register rdx_fill_ptr = rdx_argslot_limit; |
710 | 2340 Label loop; |
3363
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|
2341 __ BIND(loop); |
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diff
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|
2342 __ addptr(rdx_fill_ptr, -Interpreter::stackElementSize * elem_slots); |
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diff
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|
2343 move_typed_arg(_masm, elem_type, true, |
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diff
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|
2344 Address(rdx_fill_ptr, 0), Address(rsi_source, 0), |
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|
2345 rbx_temp, rdi_temp); |
710 | 2346 __ addptr(rsi_source, type2aelembytes(elem_type)); |
3363
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|
2347 __ cmpptr(rdx_fill_ptr, rax_argslot); |
3371
fabcf26ee72f
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3363
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|
2348 __ jcc(Assembler::above, loop); |
710 | 2349 } else if (length_constant == 0) { |
2350 // nothing to copy | |
2351 } else { | |
2352 int elem_offset = elem0_offset; | |
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|
2353 int slot_offset = length_constant * Interpreter::stackElementSize; |
710 | 2354 for (int index = 0; index < length_constant; index++) { |
3363
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|
2355 slot_offset -= Interpreter::stackElementSize * elem_slots; // fill backward |
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|
2356 move_typed_arg(_masm, elem_type, true, |
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diff
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|
2357 Address(rax_argslot, slot_offset), Address(rsi_array, elem_offset), |
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|
2358 rbx_temp, rdi_temp); |
710 | 2359 elem_offset += type2aelembytes(elem_type); |
2360 } | |
2361 } | |
3363
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|
2362 __ BIND(L_args_done); |
710 | 2363 |
2364 // Arguments are spread. Move to next method handle. | |
3363
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diff
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|
2365 UNPUSH_RSI; |
1846 | 2366 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 2367 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
2368 | |
2369 __ bind(bad_array_klass); | |
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|
2370 UNPUSH_RSI; |
2088
8d0b933dda2d
7007377: JSR 292 MethodHandlesTest.testCastFailure fails on SPARC with -Xcomp +DeoptimizeALot
twisti
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1972
diff
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|
2371 assert(!vmarg.uses(rarg2_required), "must be different registers"); |
3363
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diff
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|
2372 __ load_heap_oop( rarg2_required, Address(rdx_array_klass, java_mirror_offset)); // required type |
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2373 __ movptr( rarg1_actual, vmarg); // bad array |
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2374 __ movl( rarg0_code, (int) Bytecodes::_aaload); // who is complaining? |
1039
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2375 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 2376 |
2377 __ bind(bad_array_length); | |
3363
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2378 UNPUSH_RSI; |
2088
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2379 assert(!vmarg.uses(rarg2_required), "must be different registers"); |
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2380 __ mov( rarg2_required, rcx_recv); // AMH requiring a certain length |
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2381 __ movptr( rarg1_actual, vmarg); // bad array |
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2382 __ movl( rarg0_code, (int) Bytecodes::_arraylength); // who is complaining? |
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2383 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
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2384 #undef UNPUSH_RSI |
710 | 2385 |
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2386 break; |
710 | 2387 } |
2388 | |
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2389 default: |
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2390 // do not require all platforms to recognize all adapter types |
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2391 __ nop(); |
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2392 return; |
710 | 2393 } |
3442
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2394 BLOCK_COMMENT(err_msg("} Entry %s", entry_name(ek))); |
710 | 2395 __ hlt(); |
2396 | |
2397 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry); | |
2398 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
2399 | |
2400 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie)); | |
2401 } |