Mercurial > hg > truffle
annotate src/cpu/x86/vm/methodHandles_x86.cpp @ 2584:06b2eac2f5d3
changed Instruction.isAppended to boolean flag (instead of next == this logic)
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Thu, 05 May 2011 14:02:34 +0200 |
parents | 8033953d67ff |
children | 2e038ad0c1d0 |
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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" | |
27 #include "memory/allocation.inline.hpp" | |
28 #include "prims/methodHandles.hpp" | |
710 | 29 |
30 #define __ _masm-> | |
31 | |
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32 #ifdef PRODUCT |
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33 #define BLOCK_COMMENT(str) /* nothing */ |
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34 #else |
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35 #define BLOCK_COMMENT(str) __ block_comment(str) |
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36 #endif |
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37 |
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38 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") |
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39 |
710 | 40 address MethodHandleEntry::start_compiled_entry(MacroAssembler* _masm, |
41 address interpreted_entry) { | |
42 // Just before the actual machine code entry point, allocate space | |
43 // for a MethodHandleEntry::Data record, so that we can manage everything | |
44 // from one base pointer. | |
45 __ align(wordSize); | |
46 address target = __ pc() + sizeof(Data); | |
47 while (__ pc() < target) { | |
48 __ nop(); | |
49 __ align(wordSize); | |
50 } | |
51 | |
52 MethodHandleEntry* me = (MethodHandleEntry*) __ pc(); | |
53 me->set_end_address(__ pc()); // set a temporary end_address | |
54 me->set_from_interpreted_entry(interpreted_entry); | |
55 me->set_type_checking_entry(NULL); | |
56 | |
57 return (address) me; | |
58 } | |
59 | |
60 MethodHandleEntry* MethodHandleEntry::finish_compiled_entry(MacroAssembler* _masm, | |
61 address start_addr) { | |
62 MethodHandleEntry* me = (MethodHandleEntry*) start_addr; | |
63 assert(me->end_address() == start_addr, "valid ME"); | |
64 | |
65 // Fill in the real end_address: | |
66 __ align(wordSize); | |
67 me->set_end_address(__ pc()); | |
68 | |
69 return me; | |
70 } | |
71 | |
72 #ifdef ASSERT | |
1304 | 73 static void verify_argslot(MacroAssembler* _masm, Register argslot_reg, |
710 | 74 const char* error_message) { |
75 // Verify that argslot lies within (rsp, rbp]. | |
76 Label L_ok, L_bad; | |
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77 BLOCK_COMMENT("{ verify_argslot"); |
1304 | 78 __ cmpptr(argslot_reg, rbp); |
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79 __ jccb(Assembler::above, L_bad); |
1304 | 80 __ cmpptr(rsp, argslot_reg); |
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81 __ jccb(Assembler::below, L_ok); |
710 | 82 __ bind(L_bad); |
83 __ stop(error_message); | |
84 __ bind(L_ok); | |
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85 BLOCK_COMMENT("} verify_argslot"); |
710 | 86 } |
87 #endif | |
88 | |
89 | |
90 // Code generation | |
91 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) { | |
92 // rbx: methodOop | |
93 // rcx: receiver method handle (must load from sp[MethodTypeForm.vmslots]) | |
94 // rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted) | |
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95 // rdx, rdi: garbage temp, blown away |
710 | 96 |
97 Register rbx_method = rbx; | |
98 Register rcx_recv = rcx; | |
99 Register rax_mtype = rax; | |
100 Register rdx_temp = rdx; | |
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101 Register rdi_temp = rdi; |
710 | 102 |
103 // emit WrongMethodType path first, to enable jccb back-branch from main path | |
104 Label wrong_method_type; | |
105 __ bind(wrong_method_type); | |
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106 Label invoke_generic_slow_path; |
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107 assert(methodOopDesc::intrinsic_id_size_in_bytes() == sizeof(u1), "");; |
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108 __ cmpb(Address(rbx_method, methodOopDesc::intrinsic_id_offset_in_bytes()), (int) vmIntrinsics::_invokeExact); |
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109 __ jcc(Assembler::notEqual, invoke_generic_slow_path); |
710 | 110 __ push(rax_mtype); // required mtype |
111 __ push(rcx_recv); // bad mh (1st stacked argument) | |
112 __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry())); | |
113 | |
114 // here's where control starts out: | |
115 __ align(CodeEntryAlignment); | |
116 address entry_point = __ pc(); | |
117 | |
118 // fetch the MethodType from the method handle into rax (the 'check' register) | |
119 { | |
120 Register tem = rbx_method; | |
121 for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) { | |
122 __ movptr(rax_mtype, Address(tem, *pchase)); | |
123 tem = rax_mtype; // in case there is another indirection | |
124 } | |
125 } | |
126 | |
127 // given the MethodType, find out where the MH argument is buried | |
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128 __ load_heap_oop(rdx_temp, Address(rax_mtype, __ delayed_value(java_lang_invoke_MethodType::form_offset_in_bytes, rdi_temp))); |
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129 Register rdx_vmslots = rdx_temp; |
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130 __ movl(rdx_vmslots, Address(rdx_temp, __ delayed_value(java_lang_invoke_MethodTypeForm::vmslots_offset_in_bytes, rdi_temp))); |
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131 __ movptr(rcx_recv, __ argument_address(rdx_vmslots)); |
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132 |
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133 trace_method_handle(_masm, "invokeExact"); |
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134 |
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135 __ check_method_handle_type(rax_mtype, rcx_recv, rdi_temp, wrong_method_type); |
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136 __ jump_to_method_handle_entry(rcx_recv, rdi_temp); |
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137 |
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138 // for invokeGeneric (only), apply argument and result conversions on the fly |
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139 __ bind(invoke_generic_slow_path); |
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140 #ifdef ASSERT |
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141 { Label L; |
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142 __ cmpb(Address(rbx_method, methodOopDesc::intrinsic_id_offset_in_bytes()), (int) vmIntrinsics::_invokeGeneric); |
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143 __ jcc(Assembler::equal, L); |
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144 __ stop("bad methodOop::intrinsic_id"); |
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145 __ bind(L); |
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146 } |
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147 #endif //ASSERT |
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148 Register rbx_temp = rbx_method; // don't need it now |
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149 |
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150 // make room on the stack for another pointer: |
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151 Register rcx_argslot = rcx_recv; |
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152 __ lea(rcx_argslot, __ argument_address(rdx_vmslots, 1)); |
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153 insert_arg_slots(_masm, 2 * stack_move_unit(), _INSERT_REF_MASK, |
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154 rcx_argslot, rbx_temp, rdx_temp); |
710 | 155 |
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156 // load up an adapter from the calling type (Java weaves this) |
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157 __ load_heap_oop(rdx_temp, Address(rax_mtype, __ delayed_value(java_lang_invoke_MethodType::form_offset_in_bytes, rdi_temp))); |
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158 Register rdx_adapter = rdx_temp; |
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159 // __ load_heap_oop(rdx_adapter, Address(rdx_temp, java_lang_invoke_MethodTypeForm::genericInvoker_offset_in_bytes())); |
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160 // deal with old JDK versions: |
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161 __ lea(rdi_temp, Address(rdx_temp, __ delayed_value(java_lang_invoke_MethodTypeForm::genericInvoker_offset_in_bytes, rdi_temp))); |
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162 __ cmpptr(rdi_temp, rdx_temp); |
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163 Label sorry_no_invoke_generic; |
1846 | 164 __ jcc(Assembler::below, sorry_no_invoke_generic); |
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165 |
1846 | 166 __ load_heap_oop(rdx_adapter, Address(rdi_temp, 0)); |
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167 __ testptr(rdx_adapter, rdx_adapter); |
1846 | 168 __ jcc(Assembler::zero, sorry_no_invoke_generic); |
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169 __ movptr(Address(rcx_argslot, 1 * Interpreter::stackElementSize), rdx_adapter); |
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170 // As a trusted first argument, pass the type being called, so the adapter knows |
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171 // the actual types of the arguments and return values. |
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172 // (Generic invokers are shared among form-families of method-type.) |
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173 __ movptr(Address(rcx_argslot, 0 * Interpreter::stackElementSize), rax_mtype); |
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174 // FIXME: assert that rdx_adapter is of the right method-type. |
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175 __ mov(rcx, rdx_adapter); |
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176 trace_method_handle(_masm, "invokeGeneric"); |
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177 __ jump_to_method_handle_entry(rcx, rdi_temp); |
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178 |
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179 __ bind(sorry_no_invoke_generic); // no invokeGeneric implementation available! |
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180 __ movptr(rcx_recv, Address(rcx_argslot, -1 * Interpreter::stackElementSize)); // recover original MH |
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181 __ push(rax_mtype); // required mtype |
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182 __ push(rcx_recv); // bad mh (1st stacked argument) |
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183 __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry())); |
710 | 184 |
185 return entry_point; | |
186 } | |
187 | |
188 // Helper to insert argument slots into the stack. | |
189 // arg_slots must be a multiple of stack_move_unit() and <= 0 | |
190 void MethodHandles::insert_arg_slots(MacroAssembler* _masm, | |
191 RegisterOrConstant arg_slots, | |
192 int arg_mask, | |
193 Register rax_argslot, | |
1503 | 194 Register rbx_temp, Register rdx_temp, Register temp3_reg) { |
195 assert(temp3_reg == noreg, "temp3 not required"); | |
710 | 196 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, |
197 (!arg_slots.is_register() ? rsp : arg_slots.as_register())); | |
198 | |
199 #ifdef ASSERT | |
200 verify_argslot(_masm, rax_argslot, "insertion point must fall within current frame"); | |
201 if (arg_slots.is_register()) { | |
202 Label L_ok, L_bad; | |
203 __ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD); | |
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204 __ jccb(Assembler::greater, L_bad); |
710 | 205 __ testl(arg_slots.as_register(), -stack_move_unit() - 1); |
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206 __ jccb(Assembler::zero, L_ok); |
710 | 207 __ bind(L_bad); |
208 __ stop("assert arg_slots <= 0 and clear low bits"); | |
209 __ bind(L_ok); | |
210 } else { | |
211 assert(arg_slots.as_constant() <= 0, ""); | |
212 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); | |
213 } | |
214 #endif //ASSERT | |
215 | |
216 #ifdef _LP64 | |
217 if (arg_slots.is_register()) { | |
218 // clean high bits of stack motion register (was loaded as an int) | |
219 __ movslq(arg_slots.as_register(), arg_slots.as_register()); | |
220 } | |
221 #endif | |
222 | |
223 // Make space on the stack for the inserted argument(s). | |
224 // Then pull down everything shallower than rax_argslot. | |
225 // The stacked return address gets pulled down with everything else. | |
226 // That is, copy [rsp, argslot) downward by -size words. In pseudo-code: | |
227 // rsp -= size; | |
228 // for (rdx = rsp + size; rdx < argslot; rdx++) | |
229 // rdx[-size] = rdx[0] | |
230 // argslot -= size; | |
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231 BLOCK_COMMENT("insert_arg_slots {"); |
710 | 232 __ mov(rdx_temp, rsp); // source pointer for copy |
233 __ lea(rsp, Address(rsp, arg_slots, Address::times_ptr)); | |
234 { | |
235 Label loop; | |
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236 __ BIND(loop); |
710 | 237 // pull one word down each time through the loop |
238 __ movptr(rbx_temp, Address(rdx_temp, 0)); | |
239 __ movptr(Address(rdx_temp, arg_slots, Address::times_ptr), rbx_temp); | |
240 __ addptr(rdx_temp, wordSize); | |
241 __ cmpptr(rdx_temp, rax_argslot); | |
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242 __ jccb(Assembler::less, loop); |
710 | 243 } |
244 | |
245 // Now move the argslot down, to point to the opened-up space. | |
246 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Address::times_ptr)); | |
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247 BLOCK_COMMENT("} insert_arg_slots"); |
710 | 248 } |
249 | |
250 // Helper to remove argument slots from the stack. | |
251 // arg_slots must be a multiple of stack_move_unit() and >= 0 | |
252 void MethodHandles::remove_arg_slots(MacroAssembler* _masm, | |
253 RegisterOrConstant arg_slots, | |
254 Register rax_argslot, | |
1503 | 255 Register rbx_temp, Register rdx_temp, Register temp3_reg) { |
256 assert(temp3_reg == noreg, "temp3 not required"); | |
710 | 257 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, |
258 (!arg_slots.is_register() ? rsp : arg_slots.as_register())); | |
259 | |
260 #ifdef ASSERT | |
1304 | 261 // Verify that [argslot..argslot+size) lies within (rsp, rbp). |
262 __ lea(rbx_temp, Address(rax_argslot, arg_slots, Address::times_ptr)); | |
263 verify_argslot(_masm, rbx_temp, "deleted argument(s) must fall within current frame"); | |
710 | 264 if (arg_slots.is_register()) { |
265 Label L_ok, L_bad; | |
266 __ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD); | |
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267 __ jccb(Assembler::less, L_bad); |
710 | 268 __ testl(arg_slots.as_register(), -stack_move_unit() - 1); |
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269 __ jccb(Assembler::zero, L_ok); |
710 | 270 __ bind(L_bad); |
271 __ stop("assert arg_slots >= 0 and clear low bits"); | |
272 __ bind(L_ok); | |
273 } else { | |
274 assert(arg_slots.as_constant() >= 0, ""); | |
275 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); | |
276 } | |
277 #endif //ASSERT | |
278 | |
279 #ifdef _LP64 | |
280 if (false) { // not needed, since register is positive | |
281 // clean high bits of stack motion register (was loaded as an int) | |
282 if (arg_slots.is_register()) | |
283 __ movslq(arg_slots.as_register(), arg_slots.as_register()); | |
284 } | |
285 #endif | |
286 | |
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287 BLOCK_COMMENT("remove_arg_slots {"); |
710 | 288 // Pull up everything shallower than rax_argslot. |
289 // Then remove the excess space on the stack. | |
290 // The stacked return address gets pulled up with everything else. | |
291 // That is, copy [rsp, argslot) upward by size words. In pseudo-code: | |
292 // for (rdx = argslot-1; rdx >= rsp; --rdx) | |
293 // rdx[size] = rdx[0] | |
294 // argslot += size; | |
295 // rsp += size; | |
296 __ lea(rdx_temp, Address(rax_argslot, -wordSize)); // source pointer for copy | |
297 { | |
298 Label loop; | |
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299 __ BIND(loop); |
710 | 300 // pull one word up each time through the loop |
301 __ movptr(rbx_temp, Address(rdx_temp, 0)); | |
302 __ movptr(Address(rdx_temp, arg_slots, Address::times_ptr), rbx_temp); | |
303 __ addptr(rdx_temp, -wordSize); | |
304 __ cmpptr(rdx_temp, rsp); | |
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305 __ jccb(Assembler::greaterEqual, loop); |
710 | 306 } |
307 | |
308 // Now move the argslot up, to point to the just-copied block. | |
309 __ lea(rsp, Address(rsp, arg_slots, Address::times_ptr)); | |
310 // And adjust the argslot address to point at the deletion point. | |
311 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Address::times_ptr)); | |
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312 BLOCK_COMMENT("} remove_arg_slots"); |
710 | 313 } |
314 | |
315 #ifndef PRODUCT | |
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316 extern "C" void print_method_handle(oop mh); |
710 | 317 void trace_method_handle_stub(const char* adaptername, |
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318 oop mh, |
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319 intptr_t* saved_regs, |
710 | 320 intptr_t* entry_sp, |
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321 intptr_t* saved_sp, |
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322 intptr_t* saved_bp) { |
710 | 323 // called as a leaf from native code: do not block the JVM! |
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324 intptr_t* last_sp = (intptr_t*) saved_bp[frame::interpreter_frame_last_sp_offset]; |
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325 intptr_t* base_sp = (intptr_t*) saved_bp[frame::interpreter_frame_monitor_block_top_offset]; |
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326 printf("MH %s mh="INTPTR_FORMAT" sp=("INTPTR_FORMAT"+"INTX_FORMAT") stack_size="INTX_FORMAT" bp="INTPTR_FORMAT"\n", |
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327 adaptername, (intptr_t)mh, (intptr_t)entry_sp, (intptr_t)(saved_sp - entry_sp), (intptr_t)(base_sp - last_sp), (intptr_t)saved_bp); |
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328 if (last_sp != saved_sp && last_sp != NULL) |
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329 printf("*** last_sp="INTPTR_FORMAT"\n", (intptr_t)last_sp); |
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330 if (Verbose) { |
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331 printf(" reg dump: "); |
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332 int saved_regs_count = (entry_sp-1) - saved_regs; |
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333 // 32 bit: rdi rsi rbp rsp; rbx rdx rcx (*) rax |
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334 int i; |
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335 for (i = 0; i <= saved_regs_count; i++) { |
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336 if (i > 0 && i % 4 == 0 && i != saved_regs_count) |
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337 printf("\n + dump: "); |
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338 printf(" %d: "INTPTR_FORMAT, i, saved_regs[i]); |
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339 } |
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340 printf("\n"); |
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341 int stack_dump_count = 16; |
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342 if (stack_dump_count < (int)(saved_bp + 2 - saved_sp)) |
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343 stack_dump_count = (int)(saved_bp + 2 - saved_sp); |
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344 if (stack_dump_count > 64) stack_dump_count = 48; |
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345 for (i = 0; i < stack_dump_count; i += 4) { |
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346 printf(" dump at SP[%d] "INTPTR_FORMAT": "INTPTR_FORMAT" "INTPTR_FORMAT" "INTPTR_FORMAT" "INTPTR_FORMAT"\n", |
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347 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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348 } |
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349 print_method_handle(mh); |
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350 } |
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351 } |
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352 void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) { |
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353 if (!TraceMethodHandles) return; |
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354 BLOCK_COMMENT("trace_method_handle {"); |
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355 __ push(rax); |
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356 __ lea(rax, Address(rsp, wordSize*6)); // entry_sp |
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357 __ pusha(); |
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358 // arguments: |
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359 __ push(rbp); // interpreter frame pointer |
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360 __ push(rsi); // saved_sp |
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361 __ push(rax); // entry_sp |
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362 __ push(rcx); // mh |
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363 __ push(rcx); |
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364 __ movptr(Address(rsp, 0), (intptr_t) adaptername); |
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365 __ call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub), 5); |
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366 __ popa(); |
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367 __ pop(rax); |
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368 BLOCK_COMMENT("} trace_method_handle"); |
710 | 369 } |
370 #endif //PRODUCT | |
371 | |
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372 // which conversion op types are implemented here? |
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373 int MethodHandles::adapter_conversion_ops_supported_mask() { |
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374 return ((1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_ONLY) |
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375 |(1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_RAW) |
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376 |(1<<java_lang_invoke_AdapterMethodHandle::OP_CHECK_CAST) |
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377 |(1<<java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_PRIM) |
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378 |(1<<java_lang_invoke_AdapterMethodHandle::OP_REF_TO_PRIM) |
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379 |(1<<java_lang_invoke_AdapterMethodHandle::OP_SWAP_ARGS) |
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380 |(1<<java_lang_invoke_AdapterMethodHandle::OP_ROT_ARGS) |
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381 |(1<<java_lang_invoke_AdapterMethodHandle::OP_DUP_ARGS) |
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382 |(1<<java_lang_invoke_AdapterMethodHandle::OP_DROP_ARGS) |
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383 //|(1<<java_lang_invoke_AdapterMethodHandle::OP_SPREAD_ARGS) //BUG! |
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384 ); |
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385 // FIXME: MethodHandlesTest gets a crash if we enable OP_SPREAD_ARGS. |
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386 } |
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387 |
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388 //------------------------------------------------------------------------------ |
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389 // MethodHandles::generate_method_handle_stub |
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390 // |
710 | 391 // Generate an "entry" field for a method handle. |
392 // This determines how the method handle will respond to calls. | |
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393 void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) { |
710 | 394 // Here is the register state during an interpreted call, |
395 // as set up by generate_method_handle_interpreter_entry(): | |
396 // - rbx: garbage temp (was MethodHandle.invoke methodOop, unused) | |
397 // - rcx: receiver method handle | |
398 // - rax: method handle type (only used by the check_mtype entry point) | |
399 // - rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted) | |
400 // - rdx: garbage temp, can blow away | |
401 | |
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402 const Register rcx_recv = rcx; |
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403 const Register rax_argslot = rax; |
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404 const Register rbx_temp = rbx; |
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405 const Register rdx_temp = rdx; |
710 | 406 |
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407 // This guy is set up by prepare_to_jump_from_interpreted (from interpreted calls) |
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408 // and gen_c2i_adapter (from compiled calls): |
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409 const Register saved_last_sp = LP64_ONLY(r13) NOT_LP64(rsi); |
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410 |
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411 // Argument registers for _raise_exception. |
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412 // 32-bit: Pass first two oop/int args in registers ECX and EDX. |
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413 const Register rarg0_code = LP64_ONLY(j_rarg0) NOT_LP64(rcx); |
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414 const Register rarg1_actual = LP64_ONLY(j_rarg1) NOT_LP64(rdx); |
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415 const Register rarg2_required = LP64_ONLY(j_rarg2) NOT_LP64(rdi); |
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416 assert_different_registers(rarg0_code, rarg1_actual, rarg2_required, saved_last_sp); |
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417 |
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418 guarantee(java_lang_invoke_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets"); |
710 | 419 |
420 // some handy addresses | |
421 Address rbx_method_fie( rbx, methodOopDesc::from_interpreted_offset() ); | |
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422 Address rbx_method_fce( rbx, methodOopDesc::from_compiled_offset() ); |
710 | 423 |
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424 Address rcx_mh_vmtarget( rcx_recv, java_lang_invoke_MethodHandle::vmtarget_offset_in_bytes() ); |
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425 Address rcx_dmh_vmindex( rcx_recv, java_lang_invoke_DirectMethodHandle::vmindex_offset_in_bytes() ); |
710 | 426 |
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427 Address rcx_bmh_vmargslot( rcx_recv, java_lang_invoke_BoundMethodHandle::vmargslot_offset_in_bytes() ); |
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428 Address rcx_bmh_argument( rcx_recv, java_lang_invoke_BoundMethodHandle::argument_offset_in_bytes() ); |
710 | 429 |
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430 Address rcx_amh_vmargslot( rcx_recv, java_lang_invoke_AdapterMethodHandle::vmargslot_offset_in_bytes() ); |
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431 Address rcx_amh_argument( rcx_recv, java_lang_invoke_AdapterMethodHandle::argument_offset_in_bytes() ); |
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432 Address rcx_amh_conversion( rcx_recv, java_lang_invoke_AdapterMethodHandle::conversion_offset_in_bytes() ); |
710 | 433 Address vmarg; // __ argument_address(vmargslot) |
434 | |
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435 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); |
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436 |
710 | 437 if (have_entry(ek)) { |
438 __ nop(); // empty stubs make SG sick | |
439 return; | |
440 } | |
441 | |
442 address interp_entry = __ pc(); | |
443 | |
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444 trace_method_handle(_masm, entry_name(ek)); |
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445 |
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446 BLOCK_COMMENT(entry_name(ek)); |
710 | 447 |
448 switch ((int) ek) { | |
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449 case _raise_exception: |
710 | 450 { |
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451 // Not a real MH entry, but rather shared code for raising an |
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452 // exception. Since we use the compiled entry, arguments are |
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453 // expected in compiler argument registers. |
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454 assert(raise_exception_method(), "must be set"); |
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455 assert(raise_exception_method()->from_compiled_entry(), "method must be linked"); |
710 | 456 |
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457 const Register rdi_pc = rax; |
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458 __ pop(rdi_pc); // caller PC |
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459 __ mov(rsp, saved_last_sp); // cut the stack back to where the caller started |
710 | 460 |
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461 Register rbx_method = rbx_temp; |
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462 Label L_no_method; |
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463 // FIXME: fill in _raise_exception_method with a suitable java.lang.invoke method |
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464 __ movptr(rbx_method, ExternalAddress((address) &_raise_exception_method)); |
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465 __ testptr(rbx_method, rbx_method); |
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466 __ jccb(Assembler::zero, L_no_method); |
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467 |
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468 const int jobject_oop_offset = 0; |
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469 __ movptr(rbx_method, Address(rbx_method, jobject_oop_offset)); // dereference the jobject |
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470 __ testptr(rbx_method, rbx_method); |
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471 __ jccb(Assembler::zero, L_no_method); |
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472 __ verify_oop(rbx_method); |
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473 |
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474 NOT_LP64(__ push(rarg2_required)); |
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475 __ push(rdi_pc); // restore caller PC |
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476 __ jmp(rbx_method_fce); // jump to compiled entry |
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477 |
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478 // Do something that is at least causes a valid throw from the interpreter. |
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479 __ bind(L_no_method); |
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480 __ push(rarg2_required); |
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481 __ push(rarg1_actual); |
710 | 482 __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry())); |
483 } | |
484 break; | |
485 | |
486 case _invokestatic_mh: | |
487 case _invokespecial_mh: | |
488 { | |
489 Register rbx_method = rbx_temp; | |
1846 | 490 __ load_heap_oop(rbx_method, rcx_mh_vmtarget); // target is a methodOop |
710 | 491 __ verify_oop(rbx_method); |
492 // same as TemplateTable::invokestatic or invokespecial, | |
493 // minus the CP setup and profiling: | |
494 if (ek == _invokespecial_mh) { | |
495 // Must load & check the first argument before entering the target method. | |
496 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
497 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
498 __ null_check(rcx_recv); | |
499 __ verify_oop(rcx_recv); | |
500 } | |
501 __ jmp(rbx_method_fie); | |
502 } | |
503 break; | |
504 | |
505 case _invokevirtual_mh: | |
506 { | |
507 // same as TemplateTable::invokevirtual, | |
508 // minus the CP setup and profiling: | |
509 | |
510 // pick out the vtable index and receiver offset from the MH, | |
511 // and then we can discard it: | |
512 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
513 Register rbx_index = rbx_temp; | |
514 __ movl(rbx_index, rcx_dmh_vmindex); | |
515 // Note: The verifier allows us to ignore rcx_mh_vmtarget. | |
516 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
517 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes()); | |
518 | |
519 // get receiver klass | |
520 Register rax_klass = rax_argslot; | |
521 __ load_klass(rax_klass, rcx_recv); | |
522 __ verify_oop(rax_klass); | |
523 | |
524 // get target methodOop & entry point | |
525 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
526 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below"); | |
527 Address vtable_entry_addr(rax_klass, | |
528 rbx_index, Address::times_ptr, | |
529 base + vtableEntry::method_offset_in_bytes()); | |
530 Register rbx_method = rbx_temp; | |
1108 | 531 __ movptr(rbx_method, vtable_entry_addr); |
710 | 532 |
533 __ verify_oop(rbx_method); | |
534 __ jmp(rbx_method_fie); | |
535 } | |
536 break; | |
537 | |
538 case _invokeinterface_mh: | |
539 { | |
540 // same as TemplateTable::invokeinterface, | |
541 // minus the CP setup and profiling: | |
542 | |
543 // pick out the interface and itable index from the MH. | |
544 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
545 Register rdx_intf = rdx_temp; | |
546 Register rbx_index = rbx_temp; | |
1846 | 547 __ load_heap_oop(rdx_intf, rcx_mh_vmtarget); |
548 __ movl(rbx_index, rcx_dmh_vmindex); | |
710 | 549 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); |
550 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes()); | |
551 | |
552 // get receiver klass | |
553 Register rax_klass = rax_argslot; | |
554 __ load_klass(rax_klass, rcx_recv); | |
555 __ verify_oop(rax_klass); | |
556 | |
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557 Register rdi_temp = rdi; |
710 | 558 Register rbx_method = rbx_index; |
559 | |
560 // get interface klass | |
561 Label no_such_interface; | |
562 __ verify_oop(rdx_intf); | |
563 __ lookup_interface_method(rax_klass, rdx_intf, | |
564 // note: next two args must be the same: | |
565 rbx_index, rbx_method, | |
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566 rdi_temp, |
710 | 567 no_such_interface); |
568 | |
569 __ verify_oop(rbx_method); | |
570 __ jmp(rbx_method_fie); | |
571 __ hlt(); | |
572 | |
573 __ bind(no_such_interface); | |
574 // Throw an exception. | |
575 // For historical reasons, it will be IncompatibleClassChangeError. | |
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576 __ mov(rbx_temp, rcx_recv); // rarg2_required might be RCX |
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577 assert_different_registers(rarg2_required, rbx_temp); |
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578 __ movptr(rarg2_required, Address(rdx_intf, java_mirror_offset)); // required interface |
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579 __ mov( rarg1_actual, rbx_temp); // bad receiver |
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580 __ movl( rarg0_code, (int) Bytecodes::_invokeinterface); // who is complaining? |
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581 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 582 } |
583 break; | |
584 | |
585 case _bound_ref_mh: | |
586 case _bound_int_mh: | |
587 case _bound_long_mh: | |
588 case _bound_ref_direct_mh: | |
589 case _bound_int_direct_mh: | |
590 case _bound_long_direct_mh: | |
591 { | |
592 bool direct_to_method = (ek >= _bound_ref_direct_mh); | |
1304 | 593 BasicType arg_type = T_ILLEGAL; |
594 int arg_mask = _INSERT_NO_MASK; | |
595 int arg_slots = -1; | |
596 get_ek_bound_mh_info(ek, arg_type, arg_mask, arg_slots); | |
710 | 597 |
598 // make room for the new argument: | |
599 __ movl(rax_argslot, rcx_bmh_vmargslot); | |
600 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
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601 |
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602 insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask, rax_argslot, rbx_temp, rdx_temp); |
710 | 603 |
604 // store bound argument into the new stack slot: | |
1846 | 605 __ load_heap_oop(rbx_temp, rcx_bmh_argument); |
710 | 606 if (arg_type == T_OBJECT) { |
607 __ movptr(Address(rax_argslot, 0), rbx_temp); | |
608 } else { | |
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609 Address prim_value_addr(rbx_temp, java_lang_boxing_object::value_offset_in_bytes(arg_type)); |
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610 const int arg_size = type2aelembytes(arg_type); |
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611 __ load_sized_value(rdx_temp, prim_value_addr, arg_size, is_signed_subword_type(arg_type), rbx_temp); |
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612 __ store_sized_value(Address(rax_argslot, 0), rdx_temp, arg_size, rbx_temp); |
710 | 613 } |
614 | |
615 if (direct_to_method) { | |
616 Register rbx_method = rbx_temp; | |
1846 | 617 __ load_heap_oop(rbx_method, rcx_mh_vmtarget); |
710 | 618 __ verify_oop(rbx_method); |
619 __ jmp(rbx_method_fie); | |
620 } else { | |
1846 | 621 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 622 __ verify_oop(rcx_recv); |
623 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
624 } | |
625 } | |
626 break; | |
627 | |
628 case _adapter_retype_only: | |
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629 case _adapter_retype_raw: |
710 | 630 // immediately jump to the next MH layer: |
1846 | 631 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 632 __ verify_oop(rcx_recv); |
633 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
634 // This is OK when all parameter types widen. | |
635 // It is also OK when a return type narrows. | |
636 break; | |
637 | |
638 case _adapter_check_cast: | |
639 { | |
640 // temps: | |
641 Register rbx_klass = rbx_temp; // interesting AMH data | |
642 | |
643 // check a reference argument before jumping to the next layer of MH: | |
644 __ movl(rax_argslot, rcx_amh_vmargslot); | |
645 vmarg = __ argument_address(rax_argslot); | |
646 | |
647 // What class are we casting to? | |
1846 | 648 __ load_heap_oop(rbx_klass, rcx_amh_argument); // this is a Class object! |
649 __ load_heap_oop(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes())); | |
710 | 650 |
651 Label done; | |
652 __ movptr(rdx_temp, vmarg); | |
1277 | 653 __ testptr(rdx_temp, rdx_temp); |
1846 | 654 __ jcc(Assembler::zero, done); // no cast if null |
710 | 655 __ load_klass(rdx_temp, rdx_temp); |
656 | |
657 // live at this point: | |
658 // - rbx_klass: klass required by the target method | |
659 // - rdx_temp: argument klass to test | |
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660 // - rcx_recv: adapter method handle |
710 | 661 __ check_klass_subtype(rdx_temp, rbx_klass, rax_argslot, done); |
662 | |
663 // If we get here, the type check failed! | |
664 // Call the wrong_method_type stub, passing the failing argument type in rax. | |
665 Register rax_mtype = rax_argslot; | |
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666 __ movl(rax_argslot, rcx_amh_vmargslot); // reload argslot field |
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667 __ movptr(rdx_temp, vmarg); |
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668 |
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669 assert_different_registers(rarg2_required, rdx_temp); |
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670 __ load_heap_oop(rarg2_required, rcx_amh_argument); // required class |
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671 __ mov( rarg1_actual, rdx_temp); // bad object |
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672 __ movl( rarg0_code, (int) Bytecodes::_checkcast); // who is complaining? |
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673 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 674 |
675 __ bind(done); | |
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676 // get the new MH: |
1846 | 677 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 678 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
679 } | |
680 break; | |
681 | |
682 case _adapter_prim_to_prim: | |
683 case _adapter_ref_to_prim: | |
684 // handled completely by optimized cases | |
685 __ stop("init_AdapterMethodHandle should not issue this"); | |
686 break; | |
687 | |
688 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim | |
689 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim | |
690 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim | |
691 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim | |
692 { | |
693 // perform an in-place conversion to int or an int subword | |
694 __ movl(rax_argslot, rcx_amh_vmargslot); | |
695 vmarg = __ argument_address(rax_argslot); | |
696 | |
697 switch (ek) { | |
698 case _adapter_opt_i2i: | |
699 __ movl(rdx_temp, vmarg); | |
700 break; | |
701 case _adapter_opt_l2i: | |
702 { | |
703 // just delete the extra slot; on a little-endian machine we keep the first | |
704 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
705 remove_arg_slots(_masm, -stack_move_unit(), | |
706 rax_argslot, rbx_temp, rdx_temp); | |
1506 | 707 vmarg = Address(rax_argslot, -Interpreter::stackElementSize); |
710 | 708 __ movl(rdx_temp, vmarg); |
709 } | |
710 break; | |
711 case _adapter_opt_unboxi: | |
712 { | |
713 // Load the value up from the heap. | |
714 __ movptr(rdx_temp, vmarg); | |
715 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT); | |
716 #ifdef ASSERT | |
717 for (int bt = T_BOOLEAN; bt < T_INT; bt++) { | |
718 if (is_subword_type(BasicType(bt))) | |
719 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), ""); | |
720 } | |
721 #endif | |
722 __ null_check(rdx_temp, value_offset); | |
723 __ movl(rdx_temp, Address(rdx_temp, value_offset)); | |
724 // We load this as a word. Because we are little-endian, | |
725 // the low bits will be correct, but the high bits may need cleaning. | |
726 // The vminfo will guide us to clean those bits. | |
727 } | |
728 break; | |
729 default: | |
1304 | 730 ShouldNotReachHere(); |
710 | 731 } |
732 | |
1304 | 733 // Do the requested conversion and store the value. |
710 | 734 Register rbx_vminfo = rbx_temp; |
735 __ movl(rbx_vminfo, rcx_amh_conversion); | |
736 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
737 | |
738 // get the new MH: | |
1846 | 739 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 740 // (now we are done with the old MH) |
741 | |
742 // original 32-bit vmdata word must be of this form: | |
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743 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 | |
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744 __ xchgptr(rcx, rbx_vminfo); // free rcx for shifts |
710 | 745 __ shll(rdx_temp /*, rcx*/); |
746 Label zero_extend, done; | |
747 __ testl(rcx, CONV_VMINFO_SIGN_FLAG); | |
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748 __ jccb(Assembler::zero, zero_extend); |
710 | 749 |
750 // this path is taken for int->byte, int->short | |
751 __ sarl(rdx_temp /*, rcx*/); | |
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752 __ jmpb(done); |
710 | 753 |
754 __ bind(zero_extend); | |
755 // this is taken for int->char | |
756 __ shrl(rdx_temp /*, rcx*/); | |
757 | |
758 __ bind(done); | |
1304 | 759 __ movl(vmarg, rdx_temp); // Store the value. |
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760 __ xchgptr(rcx, rbx_vminfo); // restore rcx_recv |
710 | 761 |
762 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
763 } | |
764 break; | |
765 | |
766 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim | |
767 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim | |
768 { | |
769 // perform an in-place int-to-long or ref-to-long conversion | |
770 __ movl(rax_argslot, rcx_amh_vmargslot); | |
771 | |
772 // on a little-endian machine we keep the first slot and add another after | |
773 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
774 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, | |
775 rax_argslot, rbx_temp, rdx_temp); | |
1506 | 776 Address vmarg1(rax_argslot, -Interpreter::stackElementSize); |
777 Address vmarg2 = vmarg1.plus_disp(Interpreter::stackElementSize); | |
710 | 778 |
779 switch (ek) { | |
780 case _adapter_opt_i2l: | |
781 { | |
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782 #ifdef _LP64 |
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783 __ movslq(rdx_temp, vmarg1); // Load sign-extended |
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784 __ movq(vmarg1, rdx_temp); // Store into first slot |
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785 #else |
710 | 786 __ movl(rdx_temp, vmarg1); |
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787 __ sarl(rdx_temp, BitsPerInt - 1); // __ extend_sign() |
710 | 788 __ movl(vmarg2, rdx_temp); // store second word |
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789 #endif |
710 | 790 } |
791 break; | |
792 case _adapter_opt_unboxl: | |
793 { | |
794 // Load the value up from the heap. | |
795 __ movptr(rdx_temp, vmarg1); | |
796 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG); | |
797 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), ""); | |
798 __ null_check(rdx_temp, value_offset); | |
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799 #ifdef _LP64 |
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800 __ movq(rbx_temp, Address(rdx_temp, value_offset)); |
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801 __ movq(vmarg1, rbx_temp); |
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802 #else |
710 | 803 __ movl(rbx_temp, Address(rdx_temp, value_offset + 0*BytesPerInt)); |
804 __ movl(rdx_temp, Address(rdx_temp, value_offset + 1*BytesPerInt)); | |
805 __ movl(vmarg1, rbx_temp); | |
806 __ movl(vmarg2, rdx_temp); | |
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807 #endif |
710 | 808 } |
809 break; | |
810 default: | |
1304 | 811 ShouldNotReachHere(); |
710 | 812 } |
813 | |
1846 | 814 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 815 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
816 } | |
817 break; | |
818 | |
819 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim | |
820 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim | |
821 { | |
822 // perform an in-place floating primitive conversion | |
823 __ movl(rax_argslot, rcx_amh_vmargslot); | |
824 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
825 if (ek == _adapter_opt_f2d) { | |
826 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, | |
827 rax_argslot, rbx_temp, rdx_temp); | |
828 } | |
1506 | 829 Address vmarg(rax_argslot, -Interpreter::stackElementSize); |
710 | 830 |
831 #ifdef _LP64 | |
832 if (ek == _adapter_opt_f2d) { | |
833 __ movflt(xmm0, vmarg); | |
834 __ cvtss2sd(xmm0, xmm0); | |
835 __ movdbl(vmarg, xmm0); | |
836 } else { | |
837 __ movdbl(xmm0, vmarg); | |
838 __ cvtsd2ss(xmm0, xmm0); | |
839 __ movflt(vmarg, xmm0); | |
840 } | |
841 #else //_LP64 | |
842 if (ek == _adapter_opt_f2d) { | |
843 __ fld_s(vmarg); // load float to ST0 | |
844 __ fstp_s(vmarg); // store single | |
1304 | 845 } else { |
710 | 846 __ fld_d(vmarg); // load double to ST0 |
847 __ fstp_s(vmarg); // store single | |
848 } | |
849 #endif //_LP64 | |
850 | |
851 if (ek == _adapter_opt_d2f) { | |
852 remove_arg_slots(_masm, -stack_move_unit(), | |
853 rax_argslot, rbx_temp, rdx_temp); | |
854 } | |
855 | |
1846 | 856 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 857 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
858 } | |
859 break; | |
860 | |
861 case _adapter_prim_to_ref: | |
862 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
863 break; | |
864 | |
865 case _adapter_swap_args: | |
866 case _adapter_rot_args: | |
867 // handled completely by optimized cases | |
868 __ stop("init_AdapterMethodHandle should not issue this"); | |
869 break; | |
870 | |
871 case _adapter_opt_swap_1: | |
872 case _adapter_opt_swap_2: | |
873 case _adapter_opt_rot_1_up: | |
874 case _adapter_opt_rot_1_down: | |
875 case _adapter_opt_rot_2_up: | |
876 case _adapter_opt_rot_2_down: | |
877 { | |
1304 | 878 int swap_bytes = 0, rotate = 0; |
879 get_ek_adapter_opt_swap_rot_info(ek, swap_bytes, rotate); | |
710 | 880 |
881 // 'argslot' is the position of the first argument to swap | |
882 __ movl(rax_argslot, rcx_amh_vmargslot); | |
883 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
884 | |
885 // 'vminfo' is the second | |
886 Register rbx_destslot = rbx_temp; | |
887 __ movl(rbx_destslot, rcx_amh_conversion); | |
888 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
889 __ andl(rbx_destslot, CONV_VMINFO_MASK); | |
890 __ lea(rbx_destslot, __ argument_address(rbx_destslot)); | |
891 DEBUG_ONLY(verify_argslot(_masm, rbx_destslot, "swap point must fall within current frame")); | |
892 | |
893 if (!rotate) { | |
894 for (int i = 0; i < swap_bytes; i += wordSize) { | |
895 __ movptr(rdx_temp, Address(rax_argslot , i)); | |
896 __ push(rdx_temp); | |
897 __ movptr(rdx_temp, Address(rbx_destslot, i)); | |
898 __ movptr(Address(rax_argslot, i), rdx_temp); | |
899 __ pop(rdx_temp); | |
900 __ movptr(Address(rbx_destslot, i), rdx_temp); | |
901 } | |
902 } else { | |
903 // push the first chunk, which is going to get overwritten | |
904 for (int i = swap_bytes; (i -= wordSize) >= 0; ) { | |
905 __ movptr(rdx_temp, Address(rax_argslot, i)); | |
906 __ push(rdx_temp); | |
907 } | |
908 | |
909 if (rotate > 0) { | |
910 // rotate upward | |
911 __ subptr(rax_argslot, swap_bytes); | |
912 #ifdef ASSERT | |
913 { | |
914 // Verify that argslot > destslot, by at least swap_bytes. | |
915 Label L_ok; | |
916 __ cmpptr(rax_argslot, rbx_destslot); | |
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917 __ jccb(Assembler::aboveEqual, L_ok); |
710 | 918 __ stop("source must be above destination (upward rotation)"); |
919 __ bind(L_ok); | |
920 } | |
921 #endif | |
922 // work argslot down to destslot, copying contiguous data upwards | |
923 // pseudo-code: | |
924 // rax = src_addr - swap_bytes | |
925 // rbx = dest_addr | |
926 // while (rax >= rbx) *(rax + swap_bytes) = *(rax + 0), rax--; | |
927 Label loop; | |
928 __ bind(loop); | |
929 __ movptr(rdx_temp, Address(rax_argslot, 0)); | |
930 __ movptr(Address(rax_argslot, swap_bytes), rdx_temp); | |
931 __ addptr(rax_argslot, -wordSize); | |
932 __ cmpptr(rax_argslot, rbx_destslot); | |
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933 __ jccb(Assembler::aboveEqual, loop); |
710 | 934 } else { |
935 __ addptr(rax_argslot, swap_bytes); | |
936 #ifdef ASSERT | |
937 { | |
938 // Verify that argslot < destslot, by at least swap_bytes. | |
939 Label L_ok; | |
940 __ cmpptr(rax_argslot, rbx_destslot); | |
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941 __ jccb(Assembler::belowEqual, L_ok); |
710 | 942 __ stop("source must be below destination (downward rotation)"); |
943 __ bind(L_ok); | |
944 } | |
945 #endif | |
946 // work argslot up to destslot, copying contiguous data downwards | |
947 // pseudo-code: | |
948 // rax = src_addr + swap_bytes | |
949 // rbx = dest_addr | |
950 // while (rax <= rbx) *(rax - swap_bytes) = *(rax + 0), rax++; | |
951 Label loop; | |
952 __ bind(loop); | |
953 __ movptr(rdx_temp, Address(rax_argslot, 0)); | |
954 __ movptr(Address(rax_argslot, -swap_bytes), rdx_temp); | |
955 __ addptr(rax_argslot, wordSize); | |
956 __ cmpptr(rax_argslot, rbx_destslot); | |
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957 __ jccb(Assembler::belowEqual, loop); |
710 | 958 } |
959 | |
960 // pop the original first chunk into the destination slot, now free | |
961 for (int i = 0; i < swap_bytes; i += wordSize) { | |
962 __ pop(rdx_temp); | |
963 __ movptr(Address(rbx_destslot, i), rdx_temp); | |
964 } | |
965 } | |
966 | |
1846 | 967 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 968 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
969 } | |
970 break; | |
971 | |
972 case _adapter_dup_args: | |
973 { | |
974 // 'argslot' is the position of the first argument to duplicate | |
975 __ movl(rax_argslot, rcx_amh_vmargslot); | |
976 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
977 | |
978 // 'stack_move' is negative number of words to duplicate | |
979 Register rdx_stack_move = rdx_temp; | |
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980 __ movl2ptr(rdx_stack_move, rcx_amh_conversion); |
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981 __ sarptr(rdx_stack_move, CONV_STACK_MOVE_SHIFT); |
710 | 982 |
983 int argslot0_num = 0; | |
984 Address argslot0 = __ argument_address(RegisterOrConstant(argslot0_num)); | |
985 assert(argslot0.base() == rsp, ""); | |
986 int pre_arg_size = argslot0.disp(); | |
987 assert(pre_arg_size % wordSize == 0, ""); | |
988 assert(pre_arg_size > 0, "must include PC"); | |
989 | |
990 // remember the old rsp+1 (argslot[0]) | |
991 Register rbx_oldarg = rbx_temp; | |
992 __ lea(rbx_oldarg, argslot0); | |
993 | |
994 // move rsp down to make room for dups | |
995 __ lea(rsp, Address(rsp, rdx_stack_move, Address::times_ptr)); | |
996 | |
997 // compute the new rsp+1 (argslot[0]) | |
998 Register rdx_newarg = rdx_temp; | |
999 __ lea(rdx_newarg, argslot0); | |
1000 | |
1001 __ push(rdi); // need a temp | |
1002 // (preceding push must be done after arg addresses are taken!) | |
1003 | |
1004 // pull down the pre_arg_size data (PC) | |
1005 for (int i = -pre_arg_size; i < 0; i += wordSize) { | |
1006 __ movptr(rdi, Address(rbx_oldarg, i)); | |
1007 __ movptr(Address(rdx_newarg, i), rdi); | |
1008 } | |
1009 | |
1010 // copy from rax_argslot[0...] down to new_rsp[1...] | |
1011 // pseudo-code: | |
1012 // rbx = old_rsp+1 | |
1013 // rdx = new_rsp+1 | |
1014 // rax = argslot | |
1015 // while (rdx < rbx) *rdx++ = *rax++ | |
1016 Label loop; | |
1017 __ bind(loop); | |
1018 __ movptr(rdi, Address(rax_argslot, 0)); | |
1019 __ movptr(Address(rdx_newarg, 0), rdi); | |
1020 __ addptr(rax_argslot, wordSize); | |
1021 __ addptr(rdx_newarg, wordSize); | |
1022 __ cmpptr(rdx_newarg, rbx_oldarg); | |
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1023 __ jccb(Assembler::less, loop); |
710 | 1024 |
1025 __ pop(rdi); // restore temp | |
1026 | |
1846 | 1027 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1028 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
1029 } | |
1030 break; | |
1031 | |
1032 case _adapter_drop_args: | |
1033 { | |
1034 // 'argslot' is the position of the first argument to nuke | |
1035 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1036 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
1037 | |
1038 __ push(rdi); // need a temp | |
1039 // (must do previous push after argslot address is taken) | |
1040 | |
1041 // 'stack_move' is number of words to drop | |
1042 Register rdi_stack_move = rdi; | |
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1043 __ movl2ptr(rdi_stack_move, rcx_amh_conversion); |
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1044 __ sarptr(rdi_stack_move, CONV_STACK_MOVE_SHIFT); |
710 | 1045 remove_arg_slots(_masm, rdi_stack_move, |
1046 rax_argslot, rbx_temp, rdx_temp); | |
1047 | |
1048 __ pop(rdi); // restore temp | |
1049 | |
1846 | 1050 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1051 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
1052 } | |
1053 break; | |
1054 | |
1055 case _adapter_collect_args: | |
1056 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
1057 break; | |
1058 | |
1059 case _adapter_spread_args: | |
1060 // handled completely by optimized cases | |
1061 __ stop("init_AdapterMethodHandle should not issue this"); | |
1062 break; | |
1063 | |
1064 case _adapter_opt_spread_0: | |
1065 case _adapter_opt_spread_1: | |
1066 case _adapter_opt_spread_more: | |
1067 { | |
1068 // spread an array out into a group of arguments | |
1304 | 1069 int length_constant = get_ek_adapter_opt_spread_info(ek); |
710 | 1070 |
1071 // find the address of the array argument | |
1072 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1073 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
1074 | |
1075 // grab some temps | |
1076 { __ push(rsi); __ push(rdi); } | |
1077 // (preceding pushes must be done after argslot address is taken!) | |
1078 #define UNPUSH_RSI_RDI \ | |
1079 { __ pop(rdi); __ pop(rsi); } | |
1080 | |
1081 // arx_argslot points both to the array and to the first output arg | |
1082 vmarg = Address(rax_argslot, 0); | |
1083 | |
1084 // Get the array value. | |
1085 Register rsi_array = rsi; | |
1086 Register rdx_array_klass = rdx_temp; | |
1087 BasicType elem_type = T_OBJECT; | |
1088 int length_offset = arrayOopDesc::length_offset_in_bytes(); | |
1089 int elem0_offset = arrayOopDesc::base_offset_in_bytes(elem_type); | |
1090 __ movptr(rsi_array, vmarg); | |
1091 Label skip_array_check; | |
1092 if (length_constant == 0) { | |
1093 __ testptr(rsi_array, rsi_array); | |
1094 __ jcc(Assembler::zero, skip_array_check); | |
1095 } | |
1096 __ null_check(rsi_array, oopDesc::klass_offset_in_bytes()); | |
1097 __ load_klass(rdx_array_klass, rsi_array); | |
1098 | |
1099 // Check the array type. | |
1100 Register rbx_klass = rbx_temp; | |
1846 | 1101 __ load_heap_oop(rbx_klass, rcx_amh_argument); // this is a Class object! |
1102 __ load_heap_oop(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes())); | |
710 | 1103 |
1104 Label ok_array_klass, bad_array_klass, bad_array_length; | |
1105 __ check_klass_subtype(rdx_array_klass, rbx_klass, rdi, ok_array_klass); | |
1106 // If we get here, the type check failed! | |
1107 __ jmp(bad_array_klass); | |
1108 __ bind(ok_array_klass); | |
1109 | |
1110 // Check length. | |
1111 if (length_constant >= 0) { | |
1112 __ cmpl(Address(rsi_array, length_offset), length_constant); | |
1113 } else { | |
1114 Register rbx_vminfo = rbx_temp; | |
1115 __ movl(rbx_vminfo, rcx_amh_conversion); | |
1116 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
1117 __ andl(rbx_vminfo, CONV_VMINFO_MASK); | |
1118 __ cmpl(rbx_vminfo, Address(rsi_array, length_offset)); | |
1119 } | |
1120 __ jcc(Assembler::notEqual, bad_array_length); | |
1121 | |
1122 Register rdx_argslot_limit = rdx_temp; | |
1123 | |
1124 // Array length checks out. Now insert any required stack slots. | |
1125 if (length_constant == -1) { | |
1126 // Form a pointer to the end of the affected region. | |
1506 | 1127 __ lea(rdx_argslot_limit, Address(rax_argslot, Interpreter::stackElementSize)); |
710 | 1128 // 'stack_move' is negative number of words to insert |
1129 Register rdi_stack_move = rdi; | |
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1130 __ movl2ptr(rdi_stack_move, rcx_amh_conversion); |
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1131 __ sarptr(rdi_stack_move, CONV_STACK_MOVE_SHIFT); |
710 | 1132 Register rsi_temp = rsi_array; // spill this |
1133 insert_arg_slots(_masm, rdi_stack_move, -1, | |
1134 rax_argslot, rbx_temp, rsi_temp); | |
1135 // reload the array (since rsi was killed) | |
1136 __ movptr(rsi_array, vmarg); | |
1137 } else if (length_constant > 1) { | |
1138 int arg_mask = 0; | |
1139 int new_slots = (length_constant - 1); | |
1140 for (int i = 0; i < new_slots; i++) { | |
1141 arg_mask <<= 1; | |
1142 arg_mask |= _INSERT_REF_MASK; | |
1143 } | |
1144 insert_arg_slots(_masm, new_slots * stack_move_unit(), arg_mask, | |
1145 rax_argslot, rbx_temp, rdx_temp); | |
1146 } else if (length_constant == 1) { | |
1147 // no stack resizing required | |
1148 } else if (length_constant == 0) { | |
1149 remove_arg_slots(_masm, -stack_move_unit(), | |
1150 rax_argslot, rbx_temp, rdx_temp); | |
1151 } | |
1152 | |
1153 // Copy from the array to the new slots. | |
1154 // Note: Stack change code preserves integrity of rax_argslot pointer. | |
1155 // So even after slot insertions, rax_argslot still points to first argument. | |
1156 if (length_constant == -1) { | |
1157 // [rax_argslot, rdx_argslot_limit) is the area we are inserting into. | |
1158 Register rsi_source = rsi_array; | |
1159 __ lea(rsi_source, Address(rsi_array, elem0_offset)); | |
1160 Label loop; | |
1161 __ bind(loop); | |
1162 __ movptr(rbx_temp, Address(rsi_source, 0)); | |
1163 __ movptr(Address(rax_argslot, 0), rbx_temp); | |
1164 __ addptr(rsi_source, type2aelembytes(elem_type)); | |
1506 | 1165 __ addptr(rax_argslot, Interpreter::stackElementSize); |
710 | 1166 __ cmpptr(rax_argslot, rdx_argslot_limit); |
1135
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1167 __ jccb(Assembler::less, loop); |
710 | 1168 } else if (length_constant == 0) { |
1169 __ bind(skip_array_check); | |
1170 // nothing to copy | |
1171 } else { | |
1172 int elem_offset = elem0_offset; | |
1173 int slot_offset = 0; | |
1174 for (int index = 0; index < length_constant; index++) { | |
1175 __ movptr(rbx_temp, Address(rsi_array, elem_offset)); | |
1176 __ movptr(Address(rax_argslot, slot_offset), rbx_temp); | |
1177 elem_offset += type2aelembytes(elem_type); | |
1506 | 1178 slot_offset += Interpreter::stackElementSize; |
710 | 1179 } |
1180 } | |
1181 | |
1182 // Arguments are spread. Move to next method handle. | |
1183 UNPUSH_RSI_RDI; | |
1846 | 1184 __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
710 | 1185 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
1186 | |
1187 __ bind(bad_array_klass); | |
1188 UNPUSH_RSI_RDI; | |
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1189 assert(!vmarg.uses(rarg2_required), "must be different registers"); |
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1190 __ movptr(rarg2_required, Address(rdx_array_klass, java_mirror_offset)); // required type |
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1191 __ movptr(rarg1_actual, vmarg); // bad array |
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1192 __ movl( rarg0_code, (int) Bytecodes::_aaload); // who is complaining? |
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1193 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 1194 |
1195 __ bind(bad_array_length); | |
1196 UNPUSH_RSI_RDI; | |
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1197 assert(!vmarg.uses(rarg2_required), "must be different registers"); |
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1198 __ mov (rarg2_required, rcx_recv); // AMH requiring a certain length |
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1199 __ movptr(rarg1_actual, vmarg); // bad array |
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1200 __ movl( rarg0_code, (int) Bytecodes::_arraylength); // who is complaining? |
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1201 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 1202 |
1203 #undef UNPUSH_RSI_RDI | |
1204 } | |
1205 break; | |
1206 | |
1207 case _adapter_flyby: | |
1208 case _adapter_ricochet: | |
1209 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
1210 break; | |
1211 | |
1212 default: ShouldNotReachHere(); | |
1213 } | |
1214 __ hlt(); | |
1215 | |
1216 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry); | |
1217 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
1218 | |
1219 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie)); | |
1220 } |