Mercurial > hg > truffle
annotate src/cpu/x86/vm/methodHandles_x86.cpp @ 1252:f516d5d7a019
6910605: C2: NullPointerException/ClassCaseException is thrown when C2 with DeoptimizeALot is used
Summary: Set the reexecute bit for runtime calls _new_array_Java when they used for _multianewarray bytecode.
Reviewed-by: never
author | kvn |
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date | Mon, 08 Feb 2010 12:20:09 -0800 |
parents | e66fd840cb6b |
children | 855c5171834c |
rev | line source |
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710 | 1 /* |
2 * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. | |
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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_methodHandles_x86.cpp.incl" | |
27 | |
28 #define __ _masm-> | |
29 | |
30 address MethodHandleEntry::start_compiled_entry(MacroAssembler* _masm, | |
31 address interpreted_entry) { | |
32 // Just before the actual machine code entry point, allocate space | |
33 // for a MethodHandleEntry::Data record, so that we can manage everything | |
34 // from one base pointer. | |
35 __ align(wordSize); | |
36 address target = __ pc() + sizeof(Data); | |
37 while (__ pc() < target) { | |
38 __ nop(); | |
39 __ align(wordSize); | |
40 } | |
41 | |
42 MethodHandleEntry* me = (MethodHandleEntry*) __ pc(); | |
43 me->set_end_address(__ pc()); // set a temporary end_address | |
44 me->set_from_interpreted_entry(interpreted_entry); | |
45 me->set_type_checking_entry(NULL); | |
46 | |
47 return (address) me; | |
48 } | |
49 | |
50 MethodHandleEntry* MethodHandleEntry::finish_compiled_entry(MacroAssembler* _masm, | |
51 address start_addr) { | |
52 MethodHandleEntry* me = (MethodHandleEntry*) start_addr; | |
53 assert(me->end_address() == start_addr, "valid ME"); | |
54 | |
55 // Fill in the real end_address: | |
56 __ align(wordSize); | |
57 me->set_end_address(__ pc()); | |
58 | |
59 return me; | |
60 } | |
61 | |
62 #ifdef ASSERT | |
63 static void verify_argslot(MacroAssembler* _masm, Register rax_argslot, | |
64 const char* error_message) { | |
65 // Verify that argslot lies within (rsp, rbp]. | |
66 Label L_ok, L_bad; | |
67 __ cmpptr(rax_argslot, rbp); | |
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68 __ jccb(Assembler::above, L_bad); |
710 | 69 __ cmpptr(rsp, rax_argslot); |
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70 __ jccb(Assembler::below, L_ok); |
710 | 71 __ bind(L_bad); |
72 __ stop(error_message); | |
73 __ bind(L_ok); | |
74 } | |
75 #endif | |
76 | |
77 | |
78 // Code generation | |
79 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) { | |
80 // rbx: methodOop | |
81 // rcx: receiver method handle (must load from sp[MethodTypeForm.vmslots]) | |
82 // rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted) | |
83 // rdx: garbage temp, blown away | |
84 | |
85 Register rbx_method = rbx; | |
86 Register rcx_recv = rcx; | |
87 Register rax_mtype = rax; | |
88 Register rdx_temp = rdx; | |
89 | |
90 // emit WrongMethodType path first, to enable jccb back-branch from main path | |
91 Label wrong_method_type; | |
92 __ bind(wrong_method_type); | |
93 __ push(rax_mtype); // required mtype | |
94 __ push(rcx_recv); // bad mh (1st stacked argument) | |
95 __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry())); | |
96 | |
97 // here's where control starts out: | |
98 __ align(CodeEntryAlignment); | |
99 address entry_point = __ pc(); | |
100 | |
101 // fetch the MethodType from the method handle into rax (the 'check' register) | |
102 { | |
103 Register tem = rbx_method; | |
104 for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) { | |
105 __ movptr(rax_mtype, Address(tem, *pchase)); | |
106 tem = rax_mtype; // in case there is another indirection | |
107 } | |
108 } | |
109 Register rbx_temp = rbx_method; // done with incoming methodOop | |
110 | |
111 // given the MethodType, find out where the MH argument is buried | |
112 __ movptr(rdx_temp, Address(rax_mtype, | |
113 __ delayed_value(java_dyn_MethodType::form_offset_in_bytes, rbx_temp))); | |
114 __ movl(rdx_temp, Address(rdx_temp, | |
115 __ delayed_value(java_dyn_MethodTypeForm::vmslots_offset_in_bytes, rbx_temp))); | |
116 __ movptr(rcx_recv, __ argument_address(rdx_temp)); | |
117 | |
118 __ check_method_handle_type(rax_mtype, rcx_recv, rdx_temp, wrong_method_type); | |
119 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
120 | |
121 return entry_point; | |
122 } | |
123 | |
124 // Helper to insert argument slots into the stack. | |
125 // arg_slots must be a multiple of stack_move_unit() and <= 0 | |
126 void MethodHandles::insert_arg_slots(MacroAssembler* _masm, | |
127 RegisterOrConstant arg_slots, | |
128 int arg_mask, | |
129 Register rax_argslot, | |
130 Register rbx_temp, Register rdx_temp) { | |
131 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, | |
132 (!arg_slots.is_register() ? rsp : arg_slots.as_register())); | |
133 | |
134 #ifdef ASSERT | |
135 verify_argslot(_masm, rax_argslot, "insertion point must fall within current frame"); | |
136 if (arg_slots.is_register()) { | |
137 Label L_ok, L_bad; | |
138 __ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD); | |
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139 __ jccb(Assembler::greater, L_bad); |
710 | 140 __ testl(arg_slots.as_register(), -stack_move_unit() - 1); |
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141 __ jccb(Assembler::zero, L_ok); |
710 | 142 __ bind(L_bad); |
143 __ stop("assert arg_slots <= 0 and clear low bits"); | |
144 __ bind(L_ok); | |
145 } else { | |
146 assert(arg_slots.as_constant() <= 0, ""); | |
147 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); | |
148 } | |
149 #endif //ASSERT | |
150 | |
151 #ifdef _LP64 | |
152 if (arg_slots.is_register()) { | |
153 // clean high bits of stack motion register (was loaded as an int) | |
154 __ movslq(arg_slots.as_register(), arg_slots.as_register()); | |
155 } | |
156 #endif | |
157 | |
158 // Make space on the stack for the inserted argument(s). | |
159 // Then pull down everything shallower than rax_argslot. | |
160 // The stacked return address gets pulled down with everything else. | |
161 // That is, copy [rsp, argslot) downward by -size words. In pseudo-code: | |
162 // rsp -= size; | |
163 // for (rdx = rsp + size; rdx < argslot; rdx++) | |
164 // rdx[-size] = rdx[0] | |
165 // argslot -= size; | |
166 __ mov(rdx_temp, rsp); // source pointer for copy | |
167 __ lea(rsp, Address(rsp, arg_slots, Address::times_ptr)); | |
168 { | |
169 Label loop; | |
170 __ bind(loop); | |
171 // pull one word down each time through the loop | |
172 __ movptr(rbx_temp, Address(rdx_temp, 0)); | |
173 __ movptr(Address(rdx_temp, arg_slots, Address::times_ptr), rbx_temp); | |
174 __ addptr(rdx_temp, wordSize); | |
175 __ cmpptr(rdx_temp, rax_argslot); | |
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176 __ jccb(Assembler::less, loop); |
710 | 177 } |
178 | |
179 // Now move the argslot down, to point to the opened-up space. | |
180 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Address::times_ptr)); | |
181 | |
182 if (TaggedStackInterpreter && arg_mask != _INSERT_NO_MASK) { | |
183 // The caller has specified a bitmask of tags to put into the opened space. | |
184 // This only works when the arg_slots value is an assembly-time constant. | |
185 int constant_arg_slots = arg_slots.as_constant() / stack_move_unit(); | |
186 int tag_offset = Interpreter::tag_offset_in_bytes() - Interpreter::value_offset_in_bytes(); | |
187 for (int slot = 0; slot < constant_arg_slots; slot++) { | |
188 BasicType slot_type = ((arg_mask & (1 << slot)) == 0 ? T_OBJECT : T_INT); | |
189 int slot_offset = Interpreter::stackElementSize() * slot; | |
190 Address tag_addr(rax_argslot, slot_offset + tag_offset); | |
191 __ movptr(tag_addr, frame::tag_for_basic_type(slot_type)); | |
192 } | |
193 // Note that the new argument slots are tagged properly but contain | |
194 // garbage at this point. The value portions must be initialized | |
195 // by the caller. (Especially references!) | |
196 } | |
197 } | |
198 | |
199 // Helper to remove argument slots from the stack. | |
200 // arg_slots must be a multiple of stack_move_unit() and >= 0 | |
201 void MethodHandles::remove_arg_slots(MacroAssembler* _masm, | |
202 RegisterOrConstant arg_slots, | |
203 Register rax_argslot, | |
204 Register rbx_temp, Register rdx_temp) { | |
205 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, | |
206 (!arg_slots.is_register() ? rsp : arg_slots.as_register())); | |
207 | |
208 #ifdef ASSERT | |
209 { | |
210 // Verify that [argslot..argslot+size) lies within (rsp, rbp). | |
211 Label L_ok, L_bad; | |
212 __ lea(rbx_temp, Address(rax_argslot, arg_slots, Address::times_ptr)); | |
213 __ cmpptr(rbx_temp, rbp); | |
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214 __ jccb(Assembler::above, L_bad); |
710 | 215 __ cmpptr(rsp, rax_argslot); |
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216 __ jccb(Assembler::below, L_ok); |
710 | 217 __ bind(L_bad); |
218 __ stop("deleted argument(s) must fall within current frame"); | |
219 __ bind(L_ok); | |
220 } | |
221 if (arg_slots.is_register()) { | |
222 Label L_ok, L_bad; | |
223 __ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD); | |
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224 __ jccb(Assembler::less, L_bad); |
710 | 225 __ testl(arg_slots.as_register(), -stack_move_unit() - 1); |
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226 __ jccb(Assembler::zero, L_ok); |
710 | 227 __ bind(L_bad); |
228 __ stop("assert arg_slots >= 0 and clear low bits"); | |
229 __ bind(L_ok); | |
230 } else { | |
231 assert(arg_slots.as_constant() >= 0, ""); | |
232 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); | |
233 } | |
234 #endif //ASSERT | |
235 | |
236 #ifdef _LP64 | |
237 if (false) { // not needed, since register is positive | |
238 // clean high bits of stack motion register (was loaded as an int) | |
239 if (arg_slots.is_register()) | |
240 __ movslq(arg_slots.as_register(), arg_slots.as_register()); | |
241 } | |
242 #endif | |
243 | |
244 // Pull up everything shallower than rax_argslot. | |
245 // Then remove the excess space on the stack. | |
246 // The stacked return address gets pulled up with everything else. | |
247 // That is, copy [rsp, argslot) upward by size words. In pseudo-code: | |
248 // for (rdx = argslot-1; rdx >= rsp; --rdx) | |
249 // rdx[size] = rdx[0] | |
250 // argslot += size; | |
251 // rsp += size; | |
252 __ lea(rdx_temp, Address(rax_argslot, -wordSize)); // source pointer for copy | |
253 { | |
254 Label loop; | |
255 __ bind(loop); | |
256 // pull one word up each time through the loop | |
257 __ movptr(rbx_temp, Address(rdx_temp, 0)); | |
258 __ movptr(Address(rdx_temp, arg_slots, Address::times_ptr), rbx_temp); | |
259 __ addptr(rdx_temp, -wordSize); | |
260 __ cmpptr(rdx_temp, rsp); | |
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261 __ jccb(Assembler::greaterEqual, loop); |
710 | 262 } |
263 | |
264 // Now move the argslot up, to point to the just-copied block. | |
265 __ lea(rsp, Address(rsp, arg_slots, Address::times_ptr)); | |
266 // And adjust the argslot address to point at the deletion point. | |
267 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Address::times_ptr)); | |
268 } | |
269 | |
270 #ifndef PRODUCT | |
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271 extern "C" void print_method_handle(oop mh); |
710 | 272 void trace_method_handle_stub(const char* adaptername, |
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273 oop mh, |
710 | 274 intptr_t* entry_sp, |
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275 intptr_t* saved_sp, |
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276 intptr_t* saved_bp) { |
710 | 277 // called as a leaf from native code: do not block the JVM! |
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278 intptr_t* last_sp = (intptr_t*) saved_bp[frame::interpreter_frame_last_sp_offset]; |
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279 intptr_t* base_sp = (intptr_t*) saved_bp[frame::interpreter_frame_monitor_block_top_offset]; |
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280 printf("MH %s mh="INTPTR_FORMAT" sp=("INTPTR_FORMAT"+"INTX_FORMAT") stack_size="INTX_FORMAT" bp="INTPTR_FORMAT"\n", |
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281 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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282 if (last_sp != saved_sp) |
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283 printf("*** last_sp="INTPTR_FORMAT"\n", (intptr_t)last_sp); |
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284 if (Verbose) print_method_handle(mh); |
710 | 285 } |
286 #endif //PRODUCT | |
287 | |
288 // Generate an "entry" field for a method handle. | |
289 // This determines how the method handle will respond to calls. | |
290 void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) { | |
291 // Here is the register state during an interpreted call, | |
292 // as set up by generate_method_handle_interpreter_entry(): | |
293 // - rbx: garbage temp (was MethodHandle.invoke methodOop, unused) | |
294 // - rcx: receiver method handle | |
295 // - rax: method handle type (only used by the check_mtype entry point) | |
296 // - rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted) | |
297 // - rdx: garbage temp, can blow away | |
298 | |
299 Register rcx_recv = rcx; | |
300 Register rax_argslot = rax; | |
301 Register rbx_temp = rbx; | |
302 Register rdx_temp = rdx; | |
303 | |
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304 // This guy is set up by prepare_to_jump_from_interpreted (from interpreted calls) |
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305 // and gen_c2i_adapter (from compiled calls): |
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306 Register saved_last_sp = LP64_ONLY(r13) NOT_LP64(rsi); |
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307 |
710 | 308 guarantee(java_dyn_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets"); |
309 | |
310 // some handy addresses | |
311 Address rbx_method_fie( rbx, methodOopDesc::from_interpreted_offset() ); | |
312 | |
313 Address rcx_mh_vmtarget( rcx_recv, java_dyn_MethodHandle::vmtarget_offset_in_bytes() ); | |
314 Address rcx_dmh_vmindex( rcx_recv, sun_dyn_DirectMethodHandle::vmindex_offset_in_bytes() ); | |
315 | |
316 Address rcx_bmh_vmargslot( rcx_recv, sun_dyn_BoundMethodHandle::vmargslot_offset_in_bytes() ); | |
317 Address rcx_bmh_argument( rcx_recv, sun_dyn_BoundMethodHandle::argument_offset_in_bytes() ); | |
318 | |
319 Address rcx_amh_vmargslot( rcx_recv, sun_dyn_AdapterMethodHandle::vmargslot_offset_in_bytes() ); | |
320 Address rcx_amh_argument( rcx_recv, sun_dyn_AdapterMethodHandle::argument_offset_in_bytes() ); | |
321 Address rcx_amh_conversion( rcx_recv, sun_dyn_AdapterMethodHandle::conversion_offset_in_bytes() ); | |
322 Address vmarg; // __ argument_address(vmargslot) | |
323 | |
324 int tag_offset = -1; | |
325 if (TaggedStackInterpreter) { | |
326 tag_offset = Interpreter::tag_offset_in_bytes() - Interpreter::value_offset_in_bytes(); | |
327 assert(tag_offset = wordSize, "stack grows as expected"); | |
328 } | |
329 | |
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330 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); |
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331 |
710 | 332 if (have_entry(ek)) { |
333 __ nop(); // empty stubs make SG sick | |
334 return; | |
335 } | |
336 | |
337 address interp_entry = __ pc(); | |
338 if (UseCompressedOops) __ unimplemented("UseCompressedOops"); | |
339 | |
340 #ifndef PRODUCT | |
341 if (TraceMethodHandles) { | |
342 __ push(rax); __ push(rbx); __ push(rcx); __ push(rdx); __ push(rsi); __ push(rdi); | |
343 __ lea(rax, Address(rsp, wordSize*6)); // entry_sp | |
344 // arguments: | |
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345 __ push(rbp); // interpreter frame pointer |
710 | 346 __ push(rsi); // saved_sp |
347 __ push(rax); // entry_sp | |
348 __ push(rcx); // mh | |
349 __ push(rcx); | |
350 __ movptr(Address(rsp, 0), (intptr_t)entry_name(ek)); | |
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351 __ call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub), 5); |
710 | 352 __ pop(rdi); __ pop(rsi); __ pop(rdx); __ pop(rcx); __ pop(rbx); __ pop(rax); |
353 } | |
354 #endif //PRODUCT | |
355 | |
356 switch ((int) ek) { | |
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357 case _raise_exception: |
710 | 358 { |
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359 // Not a real MH entry, but rather shared code for raising an exception. |
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360 // Extra local arguments are pushed on stack, as required type at TOS+8, |
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361 // failing object (or NULL) at TOS+4, failing bytecode type at TOS. |
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362 // Beyond those local arguments are the PC, of course. |
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363 Register rdx_code = rdx_temp; |
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364 Register rcx_fail = rcx_recv; |
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365 Register rax_want = rax_argslot; |
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366 Register rdi_pc = rdi; |
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367 __ pop(rdx_code); // TOS+0 |
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368 __ pop(rcx_fail); // TOS+4 |
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369 __ pop(rax_want); // TOS+8 |
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370 __ pop(rdi_pc); // caller PC |
710 | 371 |
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372 __ mov(rsp, rsi); // cut the stack back to where the caller started |
710 | 373 |
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374 // Repush the arguments as if coming from the interpreter. |
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375 if (TaggedStackInterpreter) __ push(frame::tag_for_basic_type(T_INT)); |
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376 __ push(rdx_code); |
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377 if (TaggedStackInterpreter) __ push(frame::tag_for_basic_type(T_OBJECT)); |
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378 __ push(rcx_fail); |
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379 if (TaggedStackInterpreter) __ push(frame::tag_for_basic_type(T_OBJECT)); |
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380 __ push(rax_want); |
710 | 381 |
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382 Register rbx_method = rbx_temp; |
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383 Label no_method; |
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384 // FIXME: fill in _raise_exception_method with a suitable sun.dyn method |
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385 __ movptr(rbx_method, ExternalAddress((address) &_raise_exception_method)); |
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386 __ testptr(rbx_method, rbx_method); |
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387 __ jccb(Assembler::zero, no_method); |
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388 int jobject_oop_offset = 0; |
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389 __ movptr(rbx_method, Address(rbx_method, jobject_oop_offset)); // dereference the jobject |
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390 __ testptr(rbx_method, rbx_method); |
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391 __ jccb(Assembler::zero, no_method); |
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392 __ verify_oop(rbx_method); |
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393 __ push(rdi_pc); // and restore caller PC |
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394 __ jmp(rbx_method_fie); |
710 | 395 |
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396 // If we get here, the Java runtime did not do its job of creating the exception. |
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397 // Do something that is at least causes a valid throw from the interpreter. |
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398 __ bind(no_method); |
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399 __ pop(rax_want); |
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400 if (TaggedStackInterpreter) __ pop(rcx_fail); |
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401 __ pop(rcx_fail); |
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402 __ push(rax_want); |
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403 __ push(rcx_fail); |
710 | 404 __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry())); |
405 } | |
406 break; | |
407 | |
408 case _invokestatic_mh: | |
409 case _invokespecial_mh: | |
410 { | |
411 Register rbx_method = rbx_temp; | |
412 __ movptr(rbx_method, rcx_mh_vmtarget); // target is a methodOop | |
413 __ verify_oop(rbx_method); | |
414 // same as TemplateTable::invokestatic or invokespecial, | |
415 // minus the CP setup and profiling: | |
416 if (ek == _invokespecial_mh) { | |
417 // Must load & check the first argument before entering the target method. | |
418 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
419 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
420 __ null_check(rcx_recv); | |
421 __ verify_oop(rcx_recv); | |
422 } | |
423 __ jmp(rbx_method_fie); | |
424 } | |
425 break; | |
426 | |
427 case _invokevirtual_mh: | |
428 { | |
429 // same as TemplateTable::invokevirtual, | |
430 // minus the CP setup and profiling: | |
431 | |
432 // pick out the vtable index and receiver offset from the MH, | |
433 // and then we can discard it: | |
434 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
435 Register rbx_index = rbx_temp; | |
436 __ movl(rbx_index, rcx_dmh_vmindex); | |
437 // Note: The verifier allows us to ignore rcx_mh_vmtarget. | |
438 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
439 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes()); | |
440 | |
441 // get receiver klass | |
442 Register rax_klass = rax_argslot; | |
443 __ load_klass(rax_klass, rcx_recv); | |
444 __ verify_oop(rax_klass); | |
445 | |
446 // get target methodOop & entry point | |
447 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
448 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below"); | |
449 Address vtable_entry_addr(rax_klass, | |
450 rbx_index, Address::times_ptr, | |
451 base + vtableEntry::method_offset_in_bytes()); | |
452 Register rbx_method = rbx_temp; | |
1108 | 453 __ movptr(rbx_method, vtable_entry_addr); |
710 | 454 |
455 __ verify_oop(rbx_method); | |
456 __ jmp(rbx_method_fie); | |
457 } | |
458 break; | |
459 | |
460 case _invokeinterface_mh: | |
461 { | |
462 // same as TemplateTable::invokeinterface, | |
463 // minus the CP setup and profiling: | |
464 | |
465 // pick out the interface and itable index from the MH. | |
466 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
467 Register rdx_intf = rdx_temp; | |
468 Register rbx_index = rbx_temp; | |
469 __ movptr(rdx_intf, rcx_mh_vmtarget); | |
470 __ movl(rbx_index, rcx_dmh_vmindex); | |
471 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
472 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes()); | |
473 | |
474 // get receiver klass | |
475 Register rax_klass = rax_argslot; | |
476 __ load_klass(rax_klass, rcx_recv); | |
477 __ verify_oop(rax_klass); | |
478 | |
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479 Register rdi_temp = rdi; |
710 | 480 Register rbx_method = rbx_index; |
481 | |
482 // get interface klass | |
483 Label no_such_interface; | |
484 __ verify_oop(rdx_intf); | |
485 __ lookup_interface_method(rax_klass, rdx_intf, | |
486 // note: next two args must be the same: | |
487 rbx_index, rbx_method, | |
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488 rdi_temp, |
710 | 489 no_such_interface); |
490 | |
491 __ verify_oop(rbx_method); | |
492 __ jmp(rbx_method_fie); | |
493 __ hlt(); | |
494 | |
495 __ bind(no_such_interface); | |
496 // Throw an exception. | |
497 // For historical reasons, it will be IncompatibleClassChangeError. | |
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498 __ pushptr(Address(rdx_intf, java_mirror_offset)); // required interface |
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499 __ push(rcx_recv); // bad receiver |
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500 __ push((int)Bytecodes::_invokeinterface); // who is complaining? |
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501 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 502 } |
503 break; | |
504 | |
505 case _bound_ref_mh: | |
506 case _bound_int_mh: | |
507 case _bound_long_mh: | |
508 case _bound_ref_direct_mh: | |
509 case _bound_int_direct_mh: | |
510 case _bound_long_direct_mh: | |
511 { | |
512 bool direct_to_method = (ek >= _bound_ref_direct_mh); | |
513 BasicType arg_type = T_ILLEGAL; | |
514 if (ek == _bound_long_mh || ek == _bound_long_direct_mh) { | |
515 arg_type = T_LONG; | |
516 } else if (ek == _bound_int_mh || ek == _bound_int_direct_mh) { | |
517 arg_type = T_INT; | |
518 } else { | |
519 assert(ek == _bound_ref_mh || ek == _bound_ref_direct_mh, "must be ref"); | |
520 arg_type = T_OBJECT; | |
521 } | |
522 int arg_slots = type2size[arg_type]; | |
523 int arg_mask = (arg_type == T_OBJECT ? _INSERT_REF_MASK : | |
524 arg_slots == 1 ? _INSERT_INT_MASK : _INSERT_LONG_MASK); | |
525 | |
526 // make room for the new argument: | |
527 __ movl(rax_argslot, rcx_bmh_vmargslot); | |
528 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
529 insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask, | |
530 rax_argslot, rbx_temp, rdx_temp); | |
531 | |
532 // store bound argument into the new stack slot: | |
533 __ movptr(rbx_temp, rcx_bmh_argument); | |
534 Address prim_value_addr(rbx_temp, java_lang_boxing_object::value_offset_in_bytes(arg_type)); | |
535 if (arg_type == T_OBJECT) { | |
536 __ movptr(Address(rax_argslot, 0), rbx_temp); | |
537 } else { | |
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538 __ load_sized_value(rdx_temp, prim_value_addr, |
710 | 539 type2aelembytes(arg_type), is_signed_subword_type(arg_type)); |
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540 __ movptr(Address(rax_argslot, 0), rdx_temp); |
710 | 541 #ifndef _LP64 |
542 if (arg_slots == 2) { | |
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543 __ movl(rdx_temp, prim_value_addr.plus_disp(wordSize)); |
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544 __ movl(Address(rax_argslot, Interpreter::stackElementSize()), rdx_temp); |
710 | 545 } |
546 #endif //_LP64 | |
547 } | |
548 | |
549 if (direct_to_method) { | |
550 Register rbx_method = rbx_temp; | |
551 __ movptr(rbx_method, rcx_mh_vmtarget); | |
552 __ verify_oop(rbx_method); | |
553 __ jmp(rbx_method_fie); | |
554 } else { | |
555 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
556 __ verify_oop(rcx_recv); | |
557 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
558 } | |
559 } | |
560 break; | |
561 | |
562 case _adapter_retype_only: | |
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563 case _adapter_retype_raw: |
710 | 564 // immediately jump to the next MH layer: |
565 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
566 __ verify_oop(rcx_recv); | |
567 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
568 // This is OK when all parameter types widen. | |
569 // It is also OK when a return type narrows. | |
570 break; | |
571 | |
572 case _adapter_check_cast: | |
573 { | |
574 // temps: | |
575 Register rbx_klass = rbx_temp; // interesting AMH data | |
576 | |
577 // check a reference argument before jumping to the next layer of MH: | |
578 __ movl(rax_argslot, rcx_amh_vmargslot); | |
579 vmarg = __ argument_address(rax_argslot); | |
580 | |
581 // What class are we casting to? | |
582 __ movptr(rbx_klass, rcx_amh_argument); // this is a Class object! | |
583 __ movptr(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes())); | |
584 | |
585 Label done; | |
586 __ movptr(rdx_temp, vmarg); | |
587 __ testl(rdx_temp, rdx_temp); | |
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588 __ jccb(Assembler::zero, done); // no cast if null |
710 | 589 __ load_klass(rdx_temp, rdx_temp); |
590 | |
591 // live at this point: | |
592 // - rbx_klass: klass required by the target method | |
593 // - rdx_temp: argument klass to test | |
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594 // - rcx_recv: adapter method handle |
710 | 595 __ check_klass_subtype(rdx_temp, rbx_klass, rax_argslot, done); |
596 | |
597 // If we get here, the type check failed! | |
598 // Call the wrong_method_type stub, passing the failing argument type in rax. | |
599 Register rax_mtype = rax_argslot; | |
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600 __ movl(rax_argslot, rcx_amh_vmargslot); // reload argslot field |
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601 __ movptr(rdx_temp, vmarg); |
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602 |
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603 __ pushptr(rcx_amh_argument); // required class |
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604 __ push(rdx_temp); // bad object |
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605 __ push((int)Bytecodes::_checkcast); // who is complaining? |
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606 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 607 |
608 __ bind(done); | |
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609 // get the new MH: |
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610 __ movptr(rcx_recv, rcx_mh_vmtarget); |
710 | 611 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
612 } | |
613 break; | |
614 | |
615 case _adapter_prim_to_prim: | |
616 case _adapter_ref_to_prim: | |
617 // handled completely by optimized cases | |
618 __ stop("init_AdapterMethodHandle should not issue this"); | |
619 break; | |
620 | |
621 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim | |
622 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim | |
623 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim | |
624 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim | |
625 { | |
626 // perform an in-place conversion to int or an int subword | |
627 __ movl(rax_argslot, rcx_amh_vmargslot); | |
628 vmarg = __ argument_address(rax_argslot); | |
629 | |
630 switch (ek) { | |
631 case _adapter_opt_i2i: | |
632 __ movl(rdx_temp, vmarg); | |
633 break; | |
634 case _adapter_opt_l2i: | |
635 { | |
636 // just delete the extra slot; on a little-endian machine we keep the first | |
637 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
638 remove_arg_slots(_masm, -stack_move_unit(), | |
639 rax_argslot, rbx_temp, rdx_temp); | |
640 vmarg = Address(rax_argslot, -Interpreter::stackElementSize()); | |
641 __ movl(rdx_temp, vmarg); | |
642 } | |
643 break; | |
644 case _adapter_opt_unboxi: | |
645 { | |
646 // Load the value up from the heap. | |
647 __ movptr(rdx_temp, vmarg); | |
648 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT); | |
649 #ifdef ASSERT | |
650 for (int bt = T_BOOLEAN; bt < T_INT; bt++) { | |
651 if (is_subword_type(BasicType(bt))) | |
652 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), ""); | |
653 } | |
654 #endif | |
655 __ null_check(rdx_temp, value_offset); | |
656 __ movl(rdx_temp, Address(rdx_temp, value_offset)); | |
657 // We load this as a word. Because we are little-endian, | |
658 // the low bits will be correct, but the high bits may need cleaning. | |
659 // The vminfo will guide us to clean those bits. | |
660 } | |
661 break; | |
662 default: | |
663 assert(false, ""); | |
664 } | |
665 goto finish_int_conversion; | |
666 } | |
667 | |
668 finish_int_conversion: | |
669 { | |
670 Register rbx_vminfo = rbx_temp; | |
671 __ movl(rbx_vminfo, rcx_amh_conversion); | |
672 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
673 | |
674 // get the new MH: | |
675 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
676 // (now we are done with the old MH) | |
677 | |
678 // original 32-bit vmdata word must be of this form: | |
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679 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 | |
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680 __ xchgptr(rcx, rbx_vminfo); // free rcx for shifts |
710 | 681 __ shll(rdx_temp /*, rcx*/); |
682 Label zero_extend, done; | |
683 __ testl(rcx, CONV_VMINFO_SIGN_FLAG); | |
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684 __ jccb(Assembler::zero, zero_extend); |
710 | 685 |
686 // this path is taken for int->byte, int->short | |
687 __ sarl(rdx_temp /*, rcx*/); | |
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688 __ jmpb(done); |
710 | 689 |
690 __ bind(zero_extend); | |
691 // this is taken for int->char | |
692 __ shrl(rdx_temp /*, rcx*/); | |
693 | |
694 __ bind(done); | |
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695 __ movl(vmarg, rdx_temp); |
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696 __ xchgptr(rcx, rbx_vminfo); // restore rcx_recv |
710 | 697 |
698 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
699 } | |
700 break; | |
701 | |
702 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim | |
703 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim | |
704 { | |
705 // perform an in-place int-to-long or ref-to-long conversion | |
706 __ movl(rax_argslot, rcx_amh_vmargslot); | |
707 | |
708 // on a little-endian machine we keep the first slot and add another after | |
709 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
710 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, | |
711 rax_argslot, rbx_temp, rdx_temp); | |
712 Address vmarg1(rax_argslot, -Interpreter::stackElementSize()); | |
713 Address vmarg2 = vmarg1.plus_disp(Interpreter::stackElementSize()); | |
714 | |
715 switch (ek) { | |
716 case _adapter_opt_i2l: | |
717 { | |
718 __ movl(rdx_temp, vmarg1); | |
719 __ sarl(rdx_temp, 31); // __ extend_sign() | |
720 __ movl(vmarg2, rdx_temp); // store second word | |
721 } | |
722 break; | |
723 case _adapter_opt_unboxl: | |
724 { | |
725 // Load the value up from the heap. | |
726 __ movptr(rdx_temp, vmarg1); | |
727 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG); | |
728 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), ""); | |
729 __ null_check(rdx_temp, value_offset); | |
730 __ movl(rbx_temp, Address(rdx_temp, value_offset + 0*BytesPerInt)); | |
731 __ movl(rdx_temp, Address(rdx_temp, value_offset + 1*BytesPerInt)); | |
732 __ movl(vmarg1, rbx_temp); | |
733 __ movl(vmarg2, rdx_temp); | |
734 } | |
735 break; | |
736 default: | |
737 assert(false, ""); | |
738 } | |
739 | |
740 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
741 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
742 } | |
743 break; | |
744 | |
745 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim | |
746 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim | |
747 { | |
748 // perform an in-place floating primitive conversion | |
749 __ movl(rax_argslot, rcx_amh_vmargslot); | |
750 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
751 if (ek == _adapter_opt_f2d) { | |
752 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, | |
753 rax_argslot, rbx_temp, rdx_temp); | |
754 } | |
755 Address vmarg(rax_argslot, -Interpreter::stackElementSize()); | |
756 | |
757 #ifdef _LP64 | |
758 if (ek == _adapter_opt_f2d) { | |
759 __ movflt(xmm0, vmarg); | |
760 __ cvtss2sd(xmm0, xmm0); | |
761 __ movdbl(vmarg, xmm0); | |
762 } else { | |
763 __ movdbl(xmm0, vmarg); | |
764 __ cvtsd2ss(xmm0, xmm0); | |
765 __ movflt(vmarg, xmm0); | |
766 } | |
767 #else //_LP64 | |
768 if (ek == _adapter_opt_f2d) { | |
769 __ fld_s(vmarg); // load float to ST0 | |
770 __ fstp_s(vmarg); // store single | |
771 } else if (!TaggedStackInterpreter) { | |
772 __ fld_d(vmarg); // load double to ST0 | |
773 __ fstp_s(vmarg); // store single | |
774 } else { | |
775 Address vmarg_tag = vmarg.plus_disp(tag_offset); | |
776 Address vmarg2 = vmarg.plus_disp(Interpreter::stackElementSize()); | |
777 // vmarg2_tag does not participate in this code | |
778 Register rbx_tag = rbx_temp; | |
779 __ movl(rbx_tag, vmarg_tag); // preserve tag | |
780 __ movl(rdx_temp, vmarg2); // get second word of double | |
781 __ movl(vmarg_tag, rdx_temp); // align with first word | |
782 __ fld_d(vmarg); // load double to ST0 | |
783 __ movl(vmarg_tag, rbx_tag); // restore tag | |
784 __ fstp_s(vmarg); // store single | |
785 } | |
786 #endif //_LP64 | |
787 | |
788 if (ek == _adapter_opt_d2f) { | |
789 remove_arg_slots(_masm, -stack_move_unit(), | |
790 rax_argslot, rbx_temp, rdx_temp); | |
791 } | |
792 | |
793 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
794 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
795 } | |
796 break; | |
797 | |
798 case _adapter_prim_to_ref: | |
799 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
800 break; | |
801 | |
802 case _adapter_swap_args: | |
803 case _adapter_rot_args: | |
804 // handled completely by optimized cases | |
805 __ stop("init_AdapterMethodHandle should not issue this"); | |
806 break; | |
807 | |
808 case _adapter_opt_swap_1: | |
809 case _adapter_opt_swap_2: | |
810 case _adapter_opt_rot_1_up: | |
811 case _adapter_opt_rot_1_down: | |
812 case _adapter_opt_rot_2_up: | |
813 case _adapter_opt_rot_2_down: | |
814 { | |
815 int rotate = 0, swap_slots = 0; | |
816 switch ((int)ek) { | |
817 case _adapter_opt_swap_1: swap_slots = 1; break; | |
818 case _adapter_opt_swap_2: swap_slots = 2; break; | |
819 case _adapter_opt_rot_1_up: swap_slots = 1; rotate++; break; | |
820 case _adapter_opt_rot_1_down: swap_slots = 1; rotate--; break; | |
821 case _adapter_opt_rot_2_up: swap_slots = 2; rotate++; break; | |
822 case _adapter_opt_rot_2_down: swap_slots = 2; rotate--; break; | |
823 default: assert(false, ""); | |
824 } | |
825 | |
826 // the real size of the move must be doubled if TaggedStackInterpreter: | |
827 int swap_bytes = (int)( swap_slots * Interpreter::stackElementWords() * wordSize ); | |
828 | |
829 // 'argslot' is the position of the first argument to swap | |
830 __ movl(rax_argslot, rcx_amh_vmargslot); | |
831 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
832 | |
833 // 'vminfo' is the second | |
834 Register rbx_destslot = rbx_temp; | |
835 __ movl(rbx_destslot, rcx_amh_conversion); | |
836 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
837 __ andl(rbx_destslot, CONV_VMINFO_MASK); | |
838 __ lea(rbx_destslot, __ argument_address(rbx_destslot)); | |
839 DEBUG_ONLY(verify_argslot(_masm, rbx_destslot, "swap point must fall within current frame")); | |
840 | |
841 if (!rotate) { | |
842 for (int i = 0; i < swap_bytes; i += wordSize) { | |
843 __ movptr(rdx_temp, Address(rax_argslot , i)); | |
844 __ push(rdx_temp); | |
845 __ movptr(rdx_temp, Address(rbx_destslot, i)); | |
846 __ movptr(Address(rax_argslot, i), rdx_temp); | |
847 __ pop(rdx_temp); | |
848 __ movptr(Address(rbx_destslot, i), rdx_temp); | |
849 } | |
850 } else { | |
851 // push the first chunk, which is going to get overwritten | |
852 for (int i = swap_bytes; (i -= wordSize) >= 0; ) { | |
853 __ movptr(rdx_temp, Address(rax_argslot, i)); | |
854 __ push(rdx_temp); | |
855 } | |
856 | |
857 if (rotate > 0) { | |
858 // rotate upward | |
859 __ subptr(rax_argslot, swap_bytes); | |
860 #ifdef ASSERT | |
861 { | |
862 // Verify that argslot > destslot, by at least swap_bytes. | |
863 Label L_ok; | |
864 __ cmpptr(rax_argslot, rbx_destslot); | |
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865 __ jccb(Assembler::aboveEqual, L_ok); |
710 | 866 __ stop("source must be above destination (upward rotation)"); |
867 __ bind(L_ok); | |
868 } | |
869 #endif | |
870 // work argslot down to destslot, copying contiguous data upwards | |
871 // pseudo-code: | |
872 // rax = src_addr - swap_bytes | |
873 // rbx = dest_addr | |
874 // while (rax >= rbx) *(rax + swap_bytes) = *(rax + 0), rax--; | |
875 Label loop; | |
876 __ bind(loop); | |
877 __ movptr(rdx_temp, Address(rax_argslot, 0)); | |
878 __ movptr(Address(rax_argslot, swap_bytes), rdx_temp); | |
879 __ addptr(rax_argslot, -wordSize); | |
880 __ cmpptr(rax_argslot, rbx_destslot); | |
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881 __ jccb(Assembler::aboveEqual, loop); |
710 | 882 } else { |
883 __ addptr(rax_argslot, swap_bytes); | |
884 #ifdef ASSERT | |
885 { | |
886 // Verify that argslot < destslot, by at least swap_bytes. | |
887 Label L_ok; | |
888 __ cmpptr(rax_argslot, rbx_destslot); | |
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889 __ jccb(Assembler::belowEqual, L_ok); |
710 | 890 __ stop("source must be below destination (downward rotation)"); |
891 __ bind(L_ok); | |
892 } | |
893 #endif | |
894 // work argslot up to destslot, copying contiguous data downwards | |
895 // pseudo-code: | |
896 // rax = src_addr + swap_bytes | |
897 // rbx = dest_addr | |
898 // while (rax <= rbx) *(rax - swap_bytes) = *(rax + 0), rax++; | |
899 Label loop; | |
900 __ bind(loop); | |
901 __ movptr(rdx_temp, Address(rax_argslot, 0)); | |
902 __ movptr(Address(rax_argslot, -swap_bytes), rdx_temp); | |
903 __ addptr(rax_argslot, wordSize); | |
904 __ cmpptr(rax_argslot, rbx_destslot); | |
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905 __ jccb(Assembler::belowEqual, loop); |
710 | 906 } |
907 | |
908 // pop the original first chunk into the destination slot, now free | |
909 for (int i = 0; i < swap_bytes; i += wordSize) { | |
910 __ pop(rdx_temp); | |
911 __ movptr(Address(rbx_destslot, i), rdx_temp); | |
912 } | |
913 } | |
914 | |
915 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
916 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
917 } | |
918 break; | |
919 | |
920 case _adapter_dup_args: | |
921 { | |
922 // 'argslot' is the position of the first argument to duplicate | |
923 __ movl(rax_argslot, rcx_amh_vmargslot); | |
924 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
925 | |
926 // 'stack_move' is negative number of words to duplicate | |
927 Register rdx_stack_move = rdx_temp; | |
928 __ movl(rdx_stack_move, rcx_amh_conversion); | |
929 __ sarl(rdx_stack_move, CONV_STACK_MOVE_SHIFT); | |
930 | |
931 int argslot0_num = 0; | |
932 Address argslot0 = __ argument_address(RegisterOrConstant(argslot0_num)); | |
933 assert(argslot0.base() == rsp, ""); | |
934 int pre_arg_size = argslot0.disp(); | |
935 assert(pre_arg_size % wordSize == 0, ""); | |
936 assert(pre_arg_size > 0, "must include PC"); | |
937 | |
938 // remember the old rsp+1 (argslot[0]) | |
939 Register rbx_oldarg = rbx_temp; | |
940 __ lea(rbx_oldarg, argslot0); | |
941 | |
942 // move rsp down to make room for dups | |
943 __ lea(rsp, Address(rsp, rdx_stack_move, Address::times_ptr)); | |
944 | |
945 // compute the new rsp+1 (argslot[0]) | |
946 Register rdx_newarg = rdx_temp; | |
947 __ lea(rdx_newarg, argslot0); | |
948 | |
949 __ push(rdi); // need a temp | |
950 // (preceding push must be done after arg addresses are taken!) | |
951 | |
952 // pull down the pre_arg_size data (PC) | |
953 for (int i = -pre_arg_size; i < 0; i += wordSize) { | |
954 __ movptr(rdi, Address(rbx_oldarg, i)); | |
955 __ movptr(Address(rdx_newarg, i), rdi); | |
956 } | |
957 | |
958 // copy from rax_argslot[0...] down to new_rsp[1...] | |
959 // pseudo-code: | |
960 // rbx = old_rsp+1 | |
961 // rdx = new_rsp+1 | |
962 // rax = argslot | |
963 // while (rdx < rbx) *rdx++ = *rax++ | |
964 Label loop; | |
965 __ bind(loop); | |
966 __ movptr(rdi, Address(rax_argslot, 0)); | |
967 __ movptr(Address(rdx_newarg, 0), rdi); | |
968 __ addptr(rax_argslot, wordSize); | |
969 __ addptr(rdx_newarg, wordSize); | |
970 __ cmpptr(rdx_newarg, rbx_oldarg); | |
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971 __ jccb(Assembler::less, loop); |
710 | 972 |
973 __ pop(rdi); // restore temp | |
974 | |
975 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
976 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
977 } | |
978 break; | |
979 | |
980 case _adapter_drop_args: | |
981 { | |
982 // 'argslot' is the position of the first argument to nuke | |
983 __ movl(rax_argslot, rcx_amh_vmargslot); | |
984 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
985 | |
986 __ push(rdi); // need a temp | |
987 // (must do previous push after argslot address is taken) | |
988 | |
989 // 'stack_move' is number of words to drop | |
990 Register rdi_stack_move = rdi; | |
991 __ movl(rdi_stack_move, rcx_amh_conversion); | |
992 __ sarl(rdi_stack_move, CONV_STACK_MOVE_SHIFT); | |
993 remove_arg_slots(_masm, rdi_stack_move, | |
994 rax_argslot, rbx_temp, rdx_temp); | |
995 | |
996 __ pop(rdi); // restore temp | |
997 | |
998 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
999 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
1000 } | |
1001 break; | |
1002 | |
1003 case _adapter_collect_args: | |
1004 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
1005 break; | |
1006 | |
1007 case _adapter_spread_args: | |
1008 // handled completely by optimized cases | |
1009 __ stop("init_AdapterMethodHandle should not issue this"); | |
1010 break; | |
1011 | |
1012 case _adapter_opt_spread_0: | |
1013 case _adapter_opt_spread_1: | |
1014 case _adapter_opt_spread_more: | |
1015 { | |
1016 // spread an array out into a group of arguments | |
1017 int length_constant = -1; | |
1018 switch (ek) { | |
1019 case _adapter_opt_spread_0: length_constant = 0; break; | |
1020 case _adapter_opt_spread_1: length_constant = 1; break; | |
1021 } | |
1022 | |
1023 // find the address of the array argument | |
1024 __ movl(rax_argslot, rcx_amh_vmargslot); | |
1025 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
1026 | |
1027 // grab some temps | |
1028 { __ push(rsi); __ push(rdi); } | |
1029 // (preceding pushes must be done after argslot address is taken!) | |
1030 #define UNPUSH_RSI_RDI \ | |
1031 { __ pop(rdi); __ pop(rsi); } | |
1032 | |
1033 // arx_argslot points both to the array and to the first output arg | |
1034 vmarg = Address(rax_argslot, 0); | |
1035 | |
1036 // Get the array value. | |
1037 Register rsi_array = rsi; | |
1038 Register rdx_array_klass = rdx_temp; | |
1039 BasicType elem_type = T_OBJECT; | |
1040 int length_offset = arrayOopDesc::length_offset_in_bytes(); | |
1041 int elem0_offset = arrayOopDesc::base_offset_in_bytes(elem_type); | |
1042 __ movptr(rsi_array, vmarg); | |
1043 Label skip_array_check; | |
1044 if (length_constant == 0) { | |
1045 __ testptr(rsi_array, rsi_array); | |
1046 __ jcc(Assembler::zero, skip_array_check); | |
1047 } | |
1048 __ null_check(rsi_array, oopDesc::klass_offset_in_bytes()); | |
1049 __ load_klass(rdx_array_klass, rsi_array); | |
1050 | |
1051 // Check the array type. | |
1052 Register rbx_klass = rbx_temp; | |
1053 __ movptr(rbx_klass, rcx_amh_argument); // this is a Class object! | |
1054 __ movptr(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes())); | |
1055 | |
1056 Label ok_array_klass, bad_array_klass, bad_array_length; | |
1057 __ check_klass_subtype(rdx_array_klass, rbx_klass, rdi, ok_array_klass); | |
1058 // If we get here, the type check failed! | |
1059 __ jmp(bad_array_klass); | |
1060 __ bind(ok_array_klass); | |
1061 | |
1062 // Check length. | |
1063 if (length_constant >= 0) { | |
1064 __ cmpl(Address(rsi_array, length_offset), length_constant); | |
1065 } else { | |
1066 Register rbx_vminfo = rbx_temp; | |
1067 __ movl(rbx_vminfo, rcx_amh_conversion); | |
1068 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
1069 __ andl(rbx_vminfo, CONV_VMINFO_MASK); | |
1070 __ cmpl(rbx_vminfo, Address(rsi_array, length_offset)); | |
1071 } | |
1072 __ jcc(Assembler::notEqual, bad_array_length); | |
1073 | |
1074 Register rdx_argslot_limit = rdx_temp; | |
1075 | |
1076 // Array length checks out. Now insert any required stack slots. | |
1077 if (length_constant == -1) { | |
1078 // Form a pointer to the end of the affected region. | |
1079 __ lea(rdx_argslot_limit, Address(rax_argslot, Interpreter::stackElementSize())); | |
1080 // 'stack_move' is negative number of words to insert | |
1081 Register rdi_stack_move = rdi; | |
1082 __ movl(rdi_stack_move, rcx_amh_conversion); | |
1083 __ sarl(rdi_stack_move, CONV_STACK_MOVE_SHIFT); | |
1084 Register rsi_temp = rsi_array; // spill this | |
1085 insert_arg_slots(_masm, rdi_stack_move, -1, | |
1086 rax_argslot, rbx_temp, rsi_temp); | |
1087 // reload the array (since rsi was killed) | |
1088 __ movptr(rsi_array, vmarg); | |
1089 } else if (length_constant > 1) { | |
1090 int arg_mask = 0; | |
1091 int new_slots = (length_constant - 1); | |
1092 for (int i = 0; i < new_slots; i++) { | |
1093 arg_mask <<= 1; | |
1094 arg_mask |= _INSERT_REF_MASK; | |
1095 } | |
1096 insert_arg_slots(_masm, new_slots * stack_move_unit(), arg_mask, | |
1097 rax_argslot, rbx_temp, rdx_temp); | |
1098 } else if (length_constant == 1) { | |
1099 // no stack resizing required | |
1100 } else if (length_constant == 0) { | |
1101 remove_arg_slots(_masm, -stack_move_unit(), | |
1102 rax_argslot, rbx_temp, rdx_temp); | |
1103 } | |
1104 | |
1105 // Copy from the array to the new slots. | |
1106 // Note: Stack change code preserves integrity of rax_argslot pointer. | |
1107 // So even after slot insertions, rax_argslot still points to first argument. | |
1108 if (length_constant == -1) { | |
1109 // [rax_argslot, rdx_argslot_limit) is the area we are inserting into. | |
1110 Register rsi_source = rsi_array; | |
1111 __ lea(rsi_source, Address(rsi_array, elem0_offset)); | |
1112 Label loop; | |
1113 __ bind(loop); | |
1114 __ movptr(rbx_temp, Address(rsi_source, 0)); | |
1115 __ movptr(Address(rax_argslot, 0), rbx_temp); | |
1116 __ addptr(rsi_source, type2aelembytes(elem_type)); | |
1117 if (TaggedStackInterpreter) { | |
1118 __ movptr(Address(rax_argslot, tag_offset), | |
1119 frame::tag_for_basic_type(elem_type)); | |
1120 } | |
1121 __ addptr(rax_argslot, Interpreter::stackElementSize()); | |
1122 __ cmpptr(rax_argslot, rdx_argslot_limit); | |
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1123 __ jccb(Assembler::less, loop); |
710 | 1124 } else if (length_constant == 0) { |
1125 __ bind(skip_array_check); | |
1126 // nothing to copy | |
1127 } else { | |
1128 int elem_offset = elem0_offset; | |
1129 int slot_offset = 0; | |
1130 for (int index = 0; index < length_constant; index++) { | |
1131 __ movptr(rbx_temp, Address(rsi_array, elem_offset)); | |
1132 __ movptr(Address(rax_argslot, slot_offset), rbx_temp); | |
1133 elem_offset += type2aelembytes(elem_type); | |
1134 if (TaggedStackInterpreter) { | |
1135 __ movptr(Address(rax_argslot, slot_offset + tag_offset), | |
1136 frame::tag_for_basic_type(elem_type)); | |
1137 } | |
1138 slot_offset += Interpreter::stackElementSize(); | |
1139 } | |
1140 } | |
1141 | |
1142 // Arguments are spread. Move to next method handle. | |
1143 UNPUSH_RSI_RDI; | |
1144 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
1145 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
1146 | |
1147 __ bind(bad_array_klass); | |
1148 UNPUSH_RSI_RDI; | |
1039
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1149 __ pushptr(Address(rdx_array_klass, java_mirror_offset)); // required type |
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1150 __ pushptr(vmarg); // bad array |
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1151 __ push((int)Bytecodes::_aaload); // who is complaining? |
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1152 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 1153 |
1154 __ bind(bad_array_length); | |
1155 UNPUSH_RSI_RDI; | |
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1156 __ push(rcx_recv); // AMH requiring a certain length |
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1157 __ pushptr(vmarg); // bad array |
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1158 __ push((int)Bytecodes::_arraylength); // who is complaining? |
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1159 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 1160 |
1161 #undef UNPUSH_RSI_RDI | |
1162 } | |
1163 break; | |
1164 | |
1165 case _adapter_flyby: | |
1166 case _adapter_ricochet: | |
1167 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
1168 break; | |
1169 | |
1170 default: ShouldNotReachHere(); | |
1171 } | |
1172 __ hlt(); | |
1173 | |
1174 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry); | |
1175 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
1176 | |
1177 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie)); | |
1178 } |