Mercurial > hg > truffle
annotate src/cpu/x86/vm/methodHandles_x86.cpp @ 1503:c640000b7cc1
6829193: JSR 292 needs to support SPARC
Summary: There are unimplemented portions of the hotspot code for method handles and invokedynamic specific to SPARC.
Reviewed-by: kvn, never, jrose
author | twisti |
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date | Thu, 29 Apr 2010 06:30:25 -0700 |
parents | 4a9cc99938e3 |
children | 2338d41fbd81 |
rev | line source |
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710 | 1 /* |
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2 * Copyright 1997-2010 Sun Microsystems, Inc. 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 * | |
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 | |
1304 | 63 static void verify_argslot(MacroAssembler* _masm, Register argslot_reg, |
710 | 64 const char* error_message) { |
65 // Verify that argslot lies within (rsp, rbp]. | |
66 Label L_ok, L_bad; | |
1304 | 67 __ cmpptr(argslot_reg, rbp); |
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68 __ jccb(Assembler::above, L_bad); |
1304 | 69 __ cmpptr(rsp, argslot_reg); |
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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, | |
1503 | 130 Register rbx_temp, Register rdx_temp, Register temp3_reg) { |
131 assert(temp3_reg == noreg, "temp3 not required"); | |
710 | 132 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, |
133 (!arg_slots.is_register() ? rsp : arg_slots.as_register())); | |
134 | |
135 #ifdef ASSERT | |
136 verify_argslot(_masm, rax_argslot, "insertion point must fall within current frame"); | |
137 if (arg_slots.is_register()) { | |
138 Label L_ok, L_bad; | |
139 __ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD); | |
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140 __ jccb(Assembler::greater, L_bad); |
710 | 141 __ testl(arg_slots.as_register(), -stack_move_unit() - 1); |
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142 __ jccb(Assembler::zero, L_ok); |
710 | 143 __ bind(L_bad); |
144 __ stop("assert arg_slots <= 0 and clear low bits"); | |
145 __ bind(L_ok); | |
146 } else { | |
147 assert(arg_slots.as_constant() <= 0, ""); | |
148 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); | |
149 } | |
150 #endif //ASSERT | |
151 | |
152 #ifdef _LP64 | |
153 if (arg_slots.is_register()) { | |
154 // clean high bits of stack motion register (was loaded as an int) | |
155 __ movslq(arg_slots.as_register(), arg_slots.as_register()); | |
156 } | |
157 #endif | |
158 | |
159 // Make space on the stack for the inserted argument(s). | |
160 // Then pull down everything shallower than rax_argslot. | |
161 // The stacked return address gets pulled down with everything else. | |
162 // That is, copy [rsp, argslot) downward by -size words. In pseudo-code: | |
163 // rsp -= size; | |
164 // for (rdx = rsp + size; rdx < argslot; rdx++) | |
165 // rdx[-size] = rdx[0] | |
166 // argslot -= size; | |
167 __ mov(rdx_temp, rsp); // source pointer for copy | |
168 __ lea(rsp, Address(rsp, arg_slots, Address::times_ptr)); | |
169 { | |
170 Label loop; | |
171 __ bind(loop); | |
172 // pull one word down each time through the loop | |
173 __ movptr(rbx_temp, Address(rdx_temp, 0)); | |
174 __ movptr(Address(rdx_temp, arg_slots, Address::times_ptr), rbx_temp); | |
175 __ addptr(rdx_temp, wordSize); | |
176 __ cmpptr(rdx_temp, rax_argslot); | |
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177 __ jccb(Assembler::less, loop); |
710 | 178 } |
179 | |
180 // Now move the argslot down, to point to the opened-up space. | |
181 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Address::times_ptr)); | |
182 } | |
183 | |
184 // Helper to remove argument slots from the stack. | |
185 // arg_slots must be a multiple of stack_move_unit() and >= 0 | |
186 void MethodHandles::remove_arg_slots(MacroAssembler* _masm, | |
187 RegisterOrConstant arg_slots, | |
188 Register rax_argslot, | |
1503 | 189 Register rbx_temp, Register rdx_temp, Register temp3_reg) { |
190 assert(temp3_reg == noreg, "temp3 not required"); | |
710 | 191 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, |
192 (!arg_slots.is_register() ? rsp : arg_slots.as_register())); | |
193 | |
194 #ifdef ASSERT | |
1304 | 195 // Verify that [argslot..argslot+size) lies within (rsp, rbp). |
196 __ lea(rbx_temp, Address(rax_argslot, arg_slots, Address::times_ptr)); | |
197 verify_argslot(_masm, rbx_temp, "deleted argument(s) must fall within current frame"); | |
710 | 198 if (arg_slots.is_register()) { |
199 Label L_ok, L_bad; | |
200 __ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD); | |
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201 __ jccb(Assembler::less, L_bad); |
710 | 202 __ testl(arg_slots.as_register(), -stack_move_unit() - 1); |
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203 __ jccb(Assembler::zero, L_ok); |
710 | 204 __ bind(L_bad); |
205 __ stop("assert arg_slots >= 0 and clear low bits"); | |
206 __ bind(L_ok); | |
207 } else { | |
208 assert(arg_slots.as_constant() >= 0, ""); | |
209 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); | |
210 } | |
211 #endif //ASSERT | |
212 | |
213 #ifdef _LP64 | |
214 if (false) { // not needed, since register is positive | |
215 // clean high bits of stack motion register (was loaded as an int) | |
216 if (arg_slots.is_register()) | |
217 __ movslq(arg_slots.as_register(), arg_slots.as_register()); | |
218 } | |
219 #endif | |
220 | |
221 // Pull up everything shallower than rax_argslot. | |
222 // Then remove the excess space on the stack. | |
223 // The stacked return address gets pulled up with everything else. | |
224 // That is, copy [rsp, argslot) upward by size words. In pseudo-code: | |
225 // for (rdx = argslot-1; rdx >= rsp; --rdx) | |
226 // rdx[size] = rdx[0] | |
227 // argslot += size; | |
228 // rsp += size; | |
229 __ lea(rdx_temp, Address(rax_argslot, -wordSize)); // source pointer for copy | |
230 { | |
231 Label loop; | |
232 __ bind(loop); | |
233 // pull one word up each time through the loop | |
234 __ movptr(rbx_temp, Address(rdx_temp, 0)); | |
235 __ movptr(Address(rdx_temp, arg_slots, Address::times_ptr), rbx_temp); | |
236 __ addptr(rdx_temp, -wordSize); | |
237 __ cmpptr(rdx_temp, rsp); | |
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238 __ jccb(Assembler::greaterEqual, loop); |
710 | 239 } |
240 | |
241 // Now move the argslot up, to point to the just-copied block. | |
242 __ lea(rsp, Address(rsp, arg_slots, Address::times_ptr)); | |
243 // And adjust the argslot address to point at the deletion point. | |
244 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Address::times_ptr)); | |
245 } | |
246 | |
247 #ifndef PRODUCT | |
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248 extern "C" void print_method_handle(oop mh); |
710 | 249 void trace_method_handle_stub(const char* adaptername, |
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250 oop mh, |
710 | 251 intptr_t* entry_sp, |
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252 intptr_t* saved_sp, |
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253 intptr_t* saved_bp) { |
710 | 254 // called as a leaf from native code: do not block the JVM! |
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255 intptr_t* last_sp = (intptr_t*) saved_bp[frame::interpreter_frame_last_sp_offset]; |
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256 intptr_t* base_sp = (intptr_t*) saved_bp[frame::interpreter_frame_monitor_block_top_offset]; |
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257 printf("MH %s mh="INTPTR_FORMAT" sp=("INTPTR_FORMAT"+"INTX_FORMAT") stack_size="INTX_FORMAT" bp="INTPTR_FORMAT"\n", |
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258 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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259 if (last_sp != saved_sp) |
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260 printf("*** last_sp="INTPTR_FORMAT"\n", (intptr_t)last_sp); |
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261 if (Verbose) print_method_handle(mh); |
710 | 262 } |
263 #endif //PRODUCT | |
264 | |
265 // Generate an "entry" field for a method handle. | |
266 // This determines how the method handle will respond to calls. | |
267 void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) { | |
268 // Here is the register state during an interpreted call, | |
269 // as set up by generate_method_handle_interpreter_entry(): | |
270 // - rbx: garbage temp (was MethodHandle.invoke methodOop, unused) | |
271 // - rcx: receiver method handle | |
272 // - rax: method handle type (only used by the check_mtype entry point) | |
273 // - rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted) | |
274 // - rdx: garbage temp, can blow away | |
275 | |
276 Register rcx_recv = rcx; | |
277 Register rax_argslot = rax; | |
278 Register rbx_temp = rbx; | |
279 Register rdx_temp = rdx; | |
280 | |
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281 // This guy is set up by prepare_to_jump_from_interpreted (from interpreted calls) |
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282 // and gen_c2i_adapter (from compiled calls): |
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283 Register saved_last_sp = LP64_ONLY(r13) NOT_LP64(rsi); |
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284 |
710 | 285 guarantee(java_dyn_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets"); |
286 | |
287 // some handy addresses | |
288 Address rbx_method_fie( rbx, methodOopDesc::from_interpreted_offset() ); | |
289 | |
290 Address rcx_mh_vmtarget( rcx_recv, java_dyn_MethodHandle::vmtarget_offset_in_bytes() ); | |
291 Address rcx_dmh_vmindex( rcx_recv, sun_dyn_DirectMethodHandle::vmindex_offset_in_bytes() ); | |
292 | |
293 Address rcx_bmh_vmargslot( rcx_recv, sun_dyn_BoundMethodHandle::vmargslot_offset_in_bytes() ); | |
294 Address rcx_bmh_argument( rcx_recv, sun_dyn_BoundMethodHandle::argument_offset_in_bytes() ); | |
295 | |
296 Address rcx_amh_vmargslot( rcx_recv, sun_dyn_AdapterMethodHandle::vmargslot_offset_in_bytes() ); | |
297 Address rcx_amh_argument( rcx_recv, sun_dyn_AdapterMethodHandle::argument_offset_in_bytes() ); | |
298 Address rcx_amh_conversion( rcx_recv, sun_dyn_AdapterMethodHandle::conversion_offset_in_bytes() ); | |
299 Address vmarg; // __ argument_address(vmargslot) | |
300 | |
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301 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); |
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302 |
710 | 303 if (have_entry(ek)) { |
304 __ nop(); // empty stubs make SG sick | |
305 return; | |
306 } | |
307 | |
308 address interp_entry = __ pc(); | |
309 if (UseCompressedOops) __ unimplemented("UseCompressedOops"); | |
310 | |
311 #ifndef PRODUCT | |
312 if (TraceMethodHandles) { | |
313 __ push(rax); __ push(rbx); __ push(rcx); __ push(rdx); __ push(rsi); __ push(rdi); | |
314 __ lea(rax, Address(rsp, wordSize*6)); // entry_sp | |
315 // arguments: | |
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316 __ push(rbp); // interpreter frame pointer |
710 | 317 __ push(rsi); // saved_sp |
318 __ push(rax); // entry_sp | |
319 __ push(rcx); // mh | |
320 __ push(rcx); | |
321 __ movptr(Address(rsp, 0), (intptr_t)entry_name(ek)); | |
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322 __ call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub), 5); |
710 | 323 __ pop(rdi); __ pop(rsi); __ pop(rdx); __ pop(rcx); __ pop(rbx); __ pop(rax); |
324 } | |
325 #endif //PRODUCT | |
326 | |
327 switch ((int) ek) { | |
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328 case _raise_exception: |
710 | 329 { |
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330 // Not a real MH entry, but rather shared code for raising an exception. |
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331 // Extra local arguments are pushed on stack, as required type at TOS+8, |
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332 // failing object (or NULL) at TOS+4, failing bytecode type at TOS. |
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333 // Beyond those local arguments are the PC, of course. |
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334 Register rdx_code = rdx_temp; |
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335 Register rcx_fail = rcx_recv; |
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336 Register rax_want = rax_argslot; |
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337 Register rdi_pc = rdi; |
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338 __ pop(rdx_code); // TOS+0 |
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339 __ pop(rcx_fail); // TOS+4 |
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340 __ pop(rax_want); // TOS+8 |
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341 __ pop(rdi_pc); // caller PC |
710 | 342 |
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343 __ mov(rsp, rsi); // cut the stack back to where the caller started |
710 | 344 |
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345 // Repush the arguments as if coming from the interpreter. |
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346 __ push(rdx_code); |
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347 __ push(rcx_fail); |
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348 __ push(rax_want); |
710 | 349 |
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350 Register rbx_method = rbx_temp; |
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351 Label no_method; |
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352 // FIXME: fill in _raise_exception_method with a suitable sun.dyn method |
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353 __ movptr(rbx_method, ExternalAddress((address) &_raise_exception_method)); |
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354 __ testptr(rbx_method, rbx_method); |
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355 __ jccb(Assembler::zero, no_method); |
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356 int jobject_oop_offset = 0; |
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357 __ movptr(rbx_method, Address(rbx_method, jobject_oop_offset)); // dereference the jobject |
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358 __ testptr(rbx_method, rbx_method); |
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359 __ jccb(Assembler::zero, no_method); |
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360 __ verify_oop(rbx_method); |
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361 __ push(rdi_pc); // and restore caller PC |
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362 __ jmp(rbx_method_fie); |
710 | 363 |
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364 // If we get here, the Java runtime did not do its job of creating the exception. |
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365 // Do something that is at least causes a valid throw from the interpreter. |
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366 __ bind(no_method); |
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367 __ pop(rax_want); |
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368 __ pop(rcx_fail); |
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369 __ push(rax_want); |
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370 __ push(rcx_fail); |
710 | 371 __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry())); |
372 } | |
373 break; | |
374 | |
375 case _invokestatic_mh: | |
376 case _invokespecial_mh: | |
377 { | |
378 Register rbx_method = rbx_temp; | |
379 __ movptr(rbx_method, rcx_mh_vmtarget); // target is a methodOop | |
380 __ verify_oop(rbx_method); | |
381 // same as TemplateTable::invokestatic or invokespecial, | |
382 // minus the CP setup and profiling: | |
383 if (ek == _invokespecial_mh) { | |
384 // Must load & check the first argument before entering the target method. | |
385 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
386 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
387 __ null_check(rcx_recv); | |
388 __ verify_oop(rcx_recv); | |
389 } | |
390 __ jmp(rbx_method_fie); | |
391 } | |
392 break; | |
393 | |
394 case _invokevirtual_mh: | |
395 { | |
396 // same as TemplateTable::invokevirtual, | |
397 // minus the CP setup and profiling: | |
398 | |
399 // pick out the vtable index and receiver offset from the MH, | |
400 // and then we can discard it: | |
401 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
402 Register rbx_index = rbx_temp; | |
403 __ movl(rbx_index, rcx_dmh_vmindex); | |
404 // Note: The verifier allows us to ignore rcx_mh_vmtarget. | |
405 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
406 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes()); | |
407 | |
408 // get receiver klass | |
409 Register rax_klass = rax_argslot; | |
410 __ load_klass(rax_klass, rcx_recv); | |
411 __ verify_oop(rax_klass); | |
412 | |
413 // get target methodOop & entry point | |
414 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
415 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below"); | |
416 Address vtable_entry_addr(rax_klass, | |
417 rbx_index, Address::times_ptr, | |
418 base + vtableEntry::method_offset_in_bytes()); | |
419 Register rbx_method = rbx_temp; | |
1108 | 420 __ movptr(rbx_method, vtable_entry_addr); |
710 | 421 |
422 __ verify_oop(rbx_method); | |
423 __ jmp(rbx_method_fie); | |
424 } | |
425 break; | |
426 | |
427 case _invokeinterface_mh: | |
428 { | |
429 // same as TemplateTable::invokeinterface, | |
430 // minus the CP setup and profiling: | |
431 | |
432 // pick out the interface and itable index from the MH. | |
433 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
434 Register rdx_intf = rdx_temp; | |
435 Register rbx_index = rbx_temp; | |
436 __ movptr(rdx_intf, rcx_mh_vmtarget); | |
437 __ movl(rbx_index, rcx_dmh_vmindex); | |
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 | |
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446 Register rdi_temp = rdi; |
710 | 447 Register rbx_method = rbx_index; |
448 | |
449 // get interface klass | |
450 Label no_such_interface; | |
451 __ verify_oop(rdx_intf); | |
452 __ lookup_interface_method(rax_klass, rdx_intf, | |
453 // note: next two args must be the same: | |
454 rbx_index, rbx_method, | |
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455 rdi_temp, |
710 | 456 no_such_interface); |
457 | |
458 __ verify_oop(rbx_method); | |
459 __ jmp(rbx_method_fie); | |
460 __ hlt(); | |
461 | |
462 __ bind(no_such_interface); | |
463 // Throw an exception. | |
464 // For historical reasons, it will be IncompatibleClassChangeError. | |
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465 __ pushptr(Address(rdx_intf, java_mirror_offset)); // required interface |
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466 __ push(rcx_recv); // bad receiver |
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467 __ push((int)Bytecodes::_invokeinterface); // who is complaining? |
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468 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 469 } |
470 break; | |
471 | |
472 case _bound_ref_mh: | |
473 case _bound_int_mh: | |
474 case _bound_long_mh: | |
475 case _bound_ref_direct_mh: | |
476 case _bound_int_direct_mh: | |
477 case _bound_long_direct_mh: | |
478 { | |
479 bool direct_to_method = (ek >= _bound_ref_direct_mh); | |
1304 | 480 BasicType arg_type = T_ILLEGAL; |
481 int arg_mask = _INSERT_NO_MASK; | |
482 int arg_slots = -1; | |
483 get_ek_bound_mh_info(ek, arg_type, arg_mask, arg_slots); | |
710 | 484 |
485 // make room for the new argument: | |
486 __ movl(rax_argslot, rcx_bmh_vmargslot); | |
487 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
488 insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask, | |
489 rax_argslot, rbx_temp, rdx_temp); | |
490 | |
491 // store bound argument into the new stack slot: | |
492 __ movptr(rbx_temp, rcx_bmh_argument); | |
493 Address prim_value_addr(rbx_temp, java_lang_boxing_object::value_offset_in_bytes(arg_type)); | |
494 if (arg_type == T_OBJECT) { | |
495 __ movptr(Address(rax_argslot, 0), rbx_temp); | |
496 } else { | |
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497 __ load_sized_value(rdx_temp, prim_value_addr, |
710 | 498 type2aelembytes(arg_type), is_signed_subword_type(arg_type)); |
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499 __ movptr(Address(rax_argslot, 0), rdx_temp); |
710 | 500 #ifndef _LP64 |
501 if (arg_slots == 2) { | |
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502 __ movl(rdx_temp, prim_value_addr.plus_disp(wordSize)); |
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503 __ movl(Address(rax_argslot, Interpreter::stackElementSize()), rdx_temp); |
710 | 504 } |
505 #endif //_LP64 | |
506 } | |
507 | |
508 if (direct_to_method) { | |
509 Register rbx_method = rbx_temp; | |
510 __ movptr(rbx_method, rcx_mh_vmtarget); | |
511 __ verify_oop(rbx_method); | |
512 __ jmp(rbx_method_fie); | |
513 } else { | |
514 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
515 __ verify_oop(rcx_recv); | |
516 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
517 } | |
518 } | |
519 break; | |
520 | |
521 case _adapter_retype_only: | |
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522 case _adapter_retype_raw: |
710 | 523 // immediately jump to the next MH layer: |
524 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
525 __ verify_oop(rcx_recv); | |
526 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
527 // This is OK when all parameter types widen. | |
528 // It is also OK when a return type narrows. | |
529 break; | |
530 | |
531 case _adapter_check_cast: | |
532 { | |
533 // temps: | |
534 Register rbx_klass = rbx_temp; // interesting AMH data | |
535 | |
536 // check a reference argument before jumping to the next layer of MH: | |
537 __ movl(rax_argslot, rcx_amh_vmargslot); | |
538 vmarg = __ argument_address(rax_argslot); | |
539 | |
540 // What class are we casting to? | |
541 __ movptr(rbx_klass, rcx_amh_argument); // this is a Class object! | |
542 __ movptr(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes())); | |
543 | |
544 Label done; | |
545 __ movptr(rdx_temp, vmarg); | |
1277 | 546 __ testptr(rdx_temp, rdx_temp); |
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547 __ jccb(Assembler::zero, done); // no cast if null |
710 | 548 __ load_klass(rdx_temp, rdx_temp); |
549 | |
550 // live at this point: | |
551 // - rbx_klass: klass required by the target method | |
552 // - rdx_temp: argument klass to test | |
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553 // - rcx_recv: adapter method handle |
710 | 554 __ check_klass_subtype(rdx_temp, rbx_klass, rax_argslot, done); |
555 | |
556 // If we get here, the type check failed! | |
557 // Call the wrong_method_type stub, passing the failing argument type in rax. | |
558 Register rax_mtype = rax_argslot; | |
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559 __ movl(rax_argslot, rcx_amh_vmargslot); // reload argslot field |
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560 __ movptr(rdx_temp, vmarg); |
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561 |
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562 __ pushptr(rcx_amh_argument); // required class |
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563 __ push(rdx_temp); // bad object |
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564 __ push((int)Bytecodes::_checkcast); // who is complaining? |
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565 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 566 |
567 __ bind(done); | |
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568 // get the new MH: |
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569 __ movptr(rcx_recv, rcx_mh_vmtarget); |
710 | 570 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
571 } | |
572 break; | |
573 | |
574 case _adapter_prim_to_prim: | |
575 case _adapter_ref_to_prim: | |
576 // handled completely by optimized cases | |
577 __ stop("init_AdapterMethodHandle should not issue this"); | |
578 break; | |
579 | |
580 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim | |
581 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim | |
582 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim | |
583 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim | |
584 { | |
585 // perform an in-place conversion to int or an int subword | |
586 __ movl(rax_argslot, rcx_amh_vmargslot); | |
587 vmarg = __ argument_address(rax_argslot); | |
588 | |
589 switch (ek) { | |
590 case _adapter_opt_i2i: | |
591 __ movl(rdx_temp, vmarg); | |
592 break; | |
593 case _adapter_opt_l2i: | |
594 { | |
595 // just delete the extra slot; on a little-endian machine we keep the first | |
596 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
597 remove_arg_slots(_masm, -stack_move_unit(), | |
598 rax_argslot, rbx_temp, rdx_temp); | |
599 vmarg = Address(rax_argslot, -Interpreter::stackElementSize()); | |
600 __ movl(rdx_temp, vmarg); | |
601 } | |
602 break; | |
603 case _adapter_opt_unboxi: | |
604 { | |
605 // Load the value up from the heap. | |
606 __ movptr(rdx_temp, vmarg); | |
607 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT); | |
608 #ifdef ASSERT | |
609 for (int bt = T_BOOLEAN; bt < T_INT; bt++) { | |
610 if (is_subword_type(BasicType(bt))) | |
611 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), ""); | |
612 } | |
613 #endif | |
614 __ null_check(rdx_temp, value_offset); | |
615 __ movl(rdx_temp, Address(rdx_temp, value_offset)); | |
616 // We load this as a word. Because we are little-endian, | |
617 // the low bits will be correct, but the high bits may need cleaning. | |
618 // The vminfo will guide us to clean those bits. | |
619 } | |
620 break; | |
621 default: | |
1304 | 622 ShouldNotReachHere(); |
710 | 623 } |
624 | |
1304 | 625 // Do the requested conversion and store the value. |
710 | 626 Register rbx_vminfo = rbx_temp; |
627 __ movl(rbx_vminfo, rcx_amh_conversion); | |
628 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
629 | |
630 // get the new MH: | |
631 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
632 // (now we are done with the old MH) | |
633 | |
634 // original 32-bit vmdata word must be of this form: | |
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635 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 | |
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636 __ xchgptr(rcx, rbx_vminfo); // free rcx for shifts |
710 | 637 __ shll(rdx_temp /*, rcx*/); |
638 Label zero_extend, done; | |
639 __ testl(rcx, CONV_VMINFO_SIGN_FLAG); | |
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640 __ jccb(Assembler::zero, zero_extend); |
710 | 641 |
642 // this path is taken for int->byte, int->short | |
643 __ sarl(rdx_temp /*, rcx*/); | |
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644 __ jmpb(done); |
710 | 645 |
646 __ bind(zero_extend); | |
647 // this is taken for int->char | |
648 __ shrl(rdx_temp /*, rcx*/); | |
649 | |
650 __ bind(done); | |
1304 | 651 __ movl(vmarg, rdx_temp); // Store the value. |
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652 __ xchgptr(rcx, rbx_vminfo); // restore rcx_recv |
710 | 653 |
654 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
655 } | |
656 break; | |
657 | |
658 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim | |
659 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim | |
660 { | |
661 // perform an in-place int-to-long or ref-to-long conversion | |
662 __ movl(rax_argslot, rcx_amh_vmargslot); | |
663 | |
664 // on a little-endian machine we keep the first slot and add another after | |
665 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
666 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, | |
667 rax_argslot, rbx_temp, rdx_temp); | |
668 Address vmarg1(rax_argslot, -Interpreter::stackElementSize()); | |
669 Address vmarg2 = vmarg1.plus_disp(Interpreter::stackElementSize()); | |
670 | |
671 switch (ek) { | |
672 case _adapter_opt_i2l: | |
673 { | |
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674 #ifdef _LP64 |
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675 __ movslq(rdx_temp, vmarg1); // Load sign-extended |
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676 __ movq(vmarg1, rdx_temp); // Store into first slot |
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677 #else |
710 | 678 __ movl(rdx_temp, vmarg1); |
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679 __ sarl(rdx_temp, BitsPerInt - 1); // __ extend_sign() |
710 | 680 __ movl(vmarg2, rdx_temp); // store second word |
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681 #endif |
710 | 682 } |
683 break; | |
684 case _adapter_opt_unboxl: | |
685 { | |
686 // Load the value up from the heap. | |
687 __ movptr(rdx_temp, vmarg1); | |
688 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG); | |
689 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), ""); | |
690 __ null_check(rdx_temp, value_offset); | |
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691 #ifdef _LP64 |
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692 __ movq(rbx_temp, Address(rdx_temp, value_offset)); |
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693 __ movq(vmarg1, rbx_temp); |
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694 #else |
710 | 695 __ movl(rbx_temp, Address(rdx_temp, value_offset + 0*BytesPerInt)); |
696 __ movl(rdx_temp, Address(rdx_temp, value_offset + 1*BytesPerInt)); | |
697 __ movl(vmarg1, rbx_temp); | |
698 __ movl(vmarg2, rdx_temp); | |
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699 #endif |
710 | 700 } |
701 break; | |
702 default: | |
1304 | 703 ShouldNotReachHere(); |
710 | 704 } |
705 | |
706 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
707 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
708 } | |
709 break; | |
710 | |
711 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim | |
712 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim | |
713 { | |
714 // perform an in-place floating primitive conversion | |
715 __ movl(rax_argslot, rcx_amh_vmargslot); | |
716 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
717 if (ek == _adapter_opt_f2d) { | |
718 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, | |
719 rax_argslot, rbx_temp, rdx_temp); | |
720 } | |
721 Address vmarg(rax_argslot, -Interpreter::stackElementSize()); | |
722 | |
723 #ifdef _LP64 | |
724 if (ek == _adapter_opt_f2d) { | |
725 __ movflt(xmm0, vmarg); | |
726 __ cvtss2sd(xmm0, xmm0); | |
727 __ movdbl(vmarg, xmm0); | |
728 } else { | |
729 __ movdbl(xmm0, vmarg); | |
730 __ cvtsd2ss(xmm0, xmm0); | |
731 __ movflt(vmarg, xmm0); | |
732 } | |
733 #else //_LP64 | |
734 if (ek == _adapter_opt_f2d) { | |
735 __ fld_s(vmarg); // load float to ST0 | |
736 __ fstp_s(vmarg); // store single | |
1304 | 737 } else { |
710 | 738 __ fld_d(vmarg); // load double to ST0 |
739 __ fstp_s(vmarg); // store single | |
740 } | |
741 #endif //_LP64 | |
742 | |
743 if (ek == _adapter_opt_d2f) { | |
744 remove_arg_slots(_masm, -stack_move_unit(), | |
745 rax_argslot, rbx_temp, rdx_temp); | |
746 } | |
747 | |
748 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
749 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
750 } | |
751 break; | |
752 | |
753 case _adapter_prim_to_ref: | |
754 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
755 break; | |
756 | |
757 case _adapter_swap_args: | |
758 case _adapter_rot_args: | |
759 // handled completely by optimized cases | |
760 __ stop("init_AdapterMethodHandle should not issue this"); | |
761 break; | |
762 | |
763 case _adapter_opt_swap_1: | |
764 case _adapter_opt_swap_2: | |
765 case _adapter_opt_rot_1_up: | |
766 case _adapter_opt_rot_1_down: | |
767 case _adapter_opt_rot_2_up: | |
768 case _adapter_opt_rot_2_down: | |
769 { | |
1304 | 770 int swap_bytes = 0, rotate = 0; |
771 get_ek_adapter_opt_swap_rot_info(ek, swap_bytes, rotate); | |
710 | 772 |
773 // 'argslot' is the position of the first argument to swap | |
774 __ movl(rax_argslot, rcx_amh_vmargslot); | |
775 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
776 | |
777 // 'vminfo' is the second | |
778 Register rbx_destslot = rbx_temp; | |
779 __ movl(rbx_destslot, rcx_amh_conversion); | |
780 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
781 __ andl(rbx_destslot, CONV_VMINFO_MASK); | |
782 __ lea(rbx_destslot, __ argument_address(rbx_destslot)); | |
783 DEBUG_ONLY(verify_argslot(_masm, rbx_destslot, "swap point must fall within current frame")); | |
784 | |
785 if (!rotate) { | |
786 for (int i = 0; i < swap_bytes; i += wordSize) { | |
787 __ movptr(rdx_temp, Address(rax_argslot , i)); | |
788 __ push(rdx_temp); | |
789 __ movptr(rdx_temp, Address(rbx_destslot, i)); | |
790 __ movptr(Address(rax_argslot, i), rdx_temp); | |
791 __ pop(rdx_temp); | |
792 __ movptr(Address(rbx_destslot, i), rdx_temp); | |
793 } | |
794 } else { | |
795 // push the first chunk, which is going to get overwritten | |
796 for (int i = swap_bytes; (i -= wordSize) >= 0; ) { | |
797 __ movptr(rdx_temp, Address(rax_argslot, i)); | |
798 __ push(rdx_temp); | |
799 } | |
800 | |
801 if (rotate > 0) { | |
802 // rotate upward | |
803 __ subptr(rax_argslot, swap_bytes); | |
804 #ifdef ASSERT | |
805 { | |
806 // Verify that argslot > destslot, by at least swap_bytes. | |
807 Label L_ok; | |
808 __ cmpptr(rax_argslot, rbx_destslot); | |
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809 __ jccb(Assembler::aboveEqual, L_ok); |
710 | 810 __ stop("source must be above destination (upward rotation)"); |
811 __ bind(L_ok); | |
812 } | |
813 #endif | |
814 // work argslot down to destslot, copying contiguous data upwards | |
815 // pseudo-code: | |
816 // rax = src_addr - swap_bytes | |
817 // rbx = dest_addr | |
818 // while (rax >= rbx) *(rax + swap_bytes) = *(rax + 0), rax--; | |
819 Label loop; | |
820 __ bind(loop); | |
821 __ movptr(rdx_temp, Address(rax_argslot, 0)); | |
822 __ movptr(Address(rax_argslot, swap_bytes), rdx_temp); | |
823 __ addptr(rax_argslot, -wordSize); | |
824 __ cmpptr(rax_argslot, rbx_destslot); | |
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825 __ jccb(Assembler::aboveEqual, loop); |
710 | 826 } else { |
827 __ addptr(rax_argslot, swap_bytes); | |
828 #ifdef ASSERT | |
829 { | |
830 // Verify that argslot < destslot, by at least swap_bytes. | |
831 Label L_ok; | |
832 __ cmpptr(rax_argslot, rbx_destslot); | |
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833 __ jccb(Assembler::belowEqual, L_ok); |
710 | 834 __ stop("source must be below destination (downward rotation)"); |
835 __ bind(L_ok); | |
836 } | |
837 #endif | |
838 // work argslot up to destslot, copying contiguous data downwards | |
839 // pseudo-code: | |
840 // rax = src_addr + swap_bytes | |
841 // rbx = dest_addr | |
842 // while (rax <= rbx) *(rax - swap_bytes) = *(rax + 0), rax++; | |
843 Label loop; | |
844 __ bind(loop); | |
845 __ movptr(rdx_temp, Address(rax_argslot, 0)); | |
846 __ movptr(Address(rax_argslot, -swap_bytes), rdx_temp); | |
847 __ addptr(rax_argslot, wordSize); | |
848 __ cmpptr(rax_argslot, rbx_destslot); | |
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849 __ jccb(Assembler::belowEqual, loop); |
710 | 850 } |
851 | |
852 // pop the original first chunk into the destination slot, now free | |
853 for (int i = 0; i < swap_bytes; i += wordSize) { | |
854 __ pop(rdx_temp); | |
855 __ movptr(Address(rbx_destslot, i), rdx_temp); | |
856 } | |
857 } | |
858 | |
859 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
860 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
861 } | |
862 break; | |
863 | |
864 case _adapter_dup_args: | |
865 { | |
866 // 'argslot' is the position of the first argument to duplicate | |
867 __ movl(rax_argslot, rcx_amh_vmargslot); | |
868 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
869 | |
870 // 'stack_move' is negative number of words to duplicate | |
871 Register rdx_stack_move = rdx_temp; | |
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872 __ movl2ptr(rdx_stack_move, rcx_amh_conversion); |
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873 __ sarptr(rdx_stack_move, CONV_STACK_MOVE_SHIFT); |
710 | 874 |
875 int argslot0_num = 0; | |
876 Address argslot0 = __ argument_address(RegisterOrConstant(argslot0_num)); | |
877 assert(argslot0.base() == rsp, ""); | |
878 int pre_arg_size = argslot0.disp(); | |
879 assert(pre_arg_size % wordSize == 0, ""); | |
880 assert(pre_arg_size > 0, "must include PC"); | |
881 | |
882 // remember the old rsp+1 (argslot[0]) | |
883 Register rbx_oldarg = rbx_temp; | |
884 __ lea(rbx_oldarg, argslot0); | |
885 | |
886 // move rsp down to make room for dups | |
887 __ lea(rsp, Address(rsp, rdx_stack_move, Address::times_ptr)); | |
888 | |
889 // compute the new rsp+1 (argslot[0]) | |
890 Register rdx_newarg = rdx_temp; | |
891 __ lea(rdx_newarg, argslot0); | |
892 | |
893 __ push(rdi); // need a temp | |
894 // (preceding push must be done after arg addresses are taken!) | |
895 | |
896 // pull down the pre_arg_size data (PC) | |
897 for (int i = -pre_arg_size; i < 0; i += wordSize) { | |
898 __ movptr(rdi, Address(rbx_oldarg, i)); | |
899 __ movptr(Address(rdx_newarg, i), rdi); | |
900 } | |
901 | |
902 // copy from rax_argslot[0...] down to new_rsp[1...] | |
903 // pseudo-code: | |
904 // rbx = old_rsp+1 | |
905 // rdx = new_rsp+1 | |
906 // rax = argslot | |
907 // while (rdx < rbx) *rdx++ = *rax++ | |
908 Label loop; | |
909 __ bind(loop); | |
910 __ movptr(rdi, Address(rax_argslot, 0)); | |
911 __ movptr(Address(rdx_newarg, 0), rdi); | |
912 __ addptr(rax_argslot, wordSize); | |
913 __ addptr(rdx_newarg, wordSize); | |
914 __ cmpptr(rdx_newarg, rbx_oldarg); | |
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915 __ jccb(Assembler::less, loop); |
710 | 916 |
917 __ pop(rdi); // restore temp | |
918 | |
919 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
920 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
921 } | |
922 break; | |
923 | |
924 case _adapter_drop_args: | |
925 { | |
926 // 'argslot' is the position of the first argument to nuke | |
927 __ movl(rax_argslot, rcx_amh_vmargslot); | |
928 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
929 | |
930 __ push(rdi); // need a temp | |
931 // (must do previous push after argslot address is taken) | |
932 | |
933 // 'stack_move' is number of words to drop | |
934 Register rdi_stack_move = rdi; | |
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935 __ movl2ptr(rdi_stack_move, rcx_amh_conversion); |
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936 __ sarptr(rdi_stack_move, CONV_STACK_MOVE_SHIFT); |
710 | 937 remove_arg_slots(_masm, rdi_stack_move, |
938 rax_argslot, rbx_temp, rdx_temp); | |
939 | |
940 __ pop(rdi); // restore temp | |
941 | |
942 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
943 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
944 } | |
945 break; | |
946 | |
947 case _adapter_collect_args: | |
948 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
949 break; | |
950 | |
951 case _adapter_spread_args: | |
952 // handled completely by optimized cases | |
953 __ stop("init_AdapterMethodHandle should not issue this"); | |
954 break; | |
955 | |
956 case _adapter_opt_spread_0: | |
957 case _adapter_opt_spread_1: | |
958 case _adapter_opt_spread_more: | |
959 { | |
960 // spread an array out into a group of arguments | |
1304 | 961 int length_constant = get_ek_adapter_opt_spread_info(ek); |
710 | 962 |
963 // find the address of the array argument | |
964 __ movl(rax_argslot, rcx_amh_vmargslot); | |
965 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
966 | |
967 // grab some temps | |
968 { __ push(rsi); __ push(rdi); } | |
969 // (preceding pushes must be done after argslot address is taken!) | |
970 #define UNPUSH_RSI_RDI \ | |
971 { __ pop(rdi); __ pop(rsi); } | |
972 | |
973 // arx_argslot points both to the array and to the first output arg | |
974 vmarg = Address(rax_argslot, 0); | |
975 | |
976 // Get the array value. | |
977 Register rsi_array = rsi; | |
978 Register rdx_array_klass = rdx_temp; | |
979 BasicType elem_type = T_OBJECT; | |
980 int length_offset = arrayOopDesc::length_offset_in_bytes(); | |
981 int elem0_offset = arrayOopDesc::base_offset_in_bytes(elem_type); | |
982 __ movptr(rsi_array, vmarg); | |
983 Label skip_array_check; | |
984 if (length_constant == 0) { | |
985 __ testptr(rsi_array, rsi_array); | |
986 __ jcc(Assembler::zero, skip_array_check); | |
987 } | |
988 __ null_check(rsi_array, oopDesc::klass_offset_in_bytes()); | |
989 __ load_klass(rdx_array_klass, rsi_array); | |
990 | |
991 // Check the array type. | |
992 Register rbx_klass = rbx_temp; | |
993 __ movptr(rbx_klass, rcx_amh_argument); // this is a Class object! | |
994 __ movptr(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes())); | |
995 | |
996 Label ok_array_klass, bad_array_klass, bad_array_length; | |
997 __ check_klass_subtype(rdx_array_klass, rbx_klass, rdi, ok_array_klass); | |
998 // If we get here, the type check failed! | |
999 __ jmp(bad_array_klass); | |
1000 __ bind(ok_array_klass); | |
1001 | |
1002 // Check length. | |
1003 if (length_constant >= 0) { | |
1004 __ cmpl(Address(rsi_array, length_offset), length_constant); | |
1005 } else { | |
1006 Register rbx_vminfo = rbx_temp; | |
1007 __ movl(rbx_vminfo, rcx_amh_conversion); | |
1008 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
1009 __ andl(rbx_vminfo, CONV_VMINFO_MASK); | |
1010 __ cmpl(rbx_vminfo, Address(rsi_array, length_offset)); | |
1011 } | |
1012 __ jcc(Assembler::notEqual, bad_array_length); | |
1013 | |
1014 Register rdx_argslot_limit = rdx_temp; | |
1015 | |
1016 // Array length checks out. Now insert any required stack slots. | |
1017 if (length_constant == -1) { | |
1018 // Form a pointer to the end of the affected region. | |
1019 __ lea(rdx_argslot_limit, Address(rax_argslot, Interpreter::stackElementSize())); | |
1020 // 'stack_move' is negative number of words to insert | |
1021 Register rdi_stack_move = rdi; | |
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1022 __ movl2ptr(rdi_stack_move, rcx_amh_conversion); |
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1023 __ sarptr(rdi_stack_move, CONV_STACK_MOVE_SHIFT); |
710 | 1024 Register rsi_temp = rsi_array; // spill this |
1025 insert_arg_slots(_masm, rdi_stack_move, -1, | |
1026 rax_argslot, rbx_temp, rsi_temp); | |
1027 // reload the array (since rsi was killed) | |
1028 __ movptr(rsi_array, vmarg); | |
1029 } else if (length_constant > 1) { | |
1030 int arg_mask = 0; | |
1031 int new_slots = (length_constant - 1); | |
1032 for (int i = 0; i < new_slots; i++) { | |
1033 arg_mask <<= 1; | |
1034 arg_mask |= _INSERT_REF_MASK; | |
1035 } | |
1036 insert_arg_slots(_masm, new_slots * stack_move_unit(), arg_mask, | |
1037 rax_argslot, rbx_temp, rdx_temp); | |
1038 } else if (length_constant == 1) { | |
1039 // no stack resizing required | |
1040 } else if (length_constant == 0) { | |
1041 remove_arg_slots(_masm, -stack_move_unit(), | |
1042 rax_argslot, rbx_temp, rdx_temp); | |
1043 } | |
1044 | |
1045 // Copy from the array to the new slots. | |
1046 // Note: Stack change code preserves integrity of rax_argslot pointer. | |
1047 // So even after slot insertions, rax_argslot still points to first argument. | |
1048 if (length_constant == -1) { | |
1049 // [rax_argslot, rdx_argslot_limit) is the area we are inserting into. | |
1050 Register rsi_source = rsi_array; | |
1051 __ lea(rsi_source, Address(rsi_array, elem0_offset)); | |
1052 Label loop; | |
1053 __ bind(loop); | |
1054 __ movptr(rbx_temp, Address(rsi_source, 0)); | |
1055 __ movptr(Address(rax_argslot, 0), rbx_temp); | |
1056 __ addptr(rsi_source, type2aelembytes(elem_type)); | |
1057 __ addptr(rax_argslot, Interpreter::stackElementSize()); | |
1058 __ cmpptr(rax_argslot, rdx_argslot_limit); | |
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1059 __ jccb(Assembler::less, loop); |
710 | 1060 } else if (length_constant == 0) { |
1061 __ bind(skip_array_check); | |
1062 // nothing to copy | |
1063 } else { | |
1064 int elem_offset = elem0_offset; | |
1065 int slot_offset = 0; | |
1066 for (int index = 0; index < length_constant; index++) { | |
1067 __ movptr(rbx_temp, Address(rsi_array, elem_offset)); | |
1068 __ movptr(Address(rax_argslot, slot_offset), rbx_temp); | |
1069 elem_offset += type2aelembytes(elem_type); | |
1330 | 1070 slot_offset += Interpreter::stackElementSize(); |
710 | 1071 } |
1072 } | |
1073 | |
1074 // Arguments are spread. Move to next method handle. | |
1075 UNPUSH_RSI_RDI; | |
1076 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
1077 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
1078 | |
1079 __ bind(bad_array_klass); | |
1080 UNPUSH_RSI_RDI; | |
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1081 __ pushptr(Address(rdx_array_klass, java_mirror_offset)); // required type |
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1082 __ pushptr(vmarg); // bad array |
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1083 __ push((int)Bytecodes::_aaload); // who is complaining? |
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1084 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 1085 |
1086 __ bind(bad_array_length); | |
1087 UNPUSH_RSI_RDI; | |
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1088 __ push(rcx_recv); // AMH requiring a certain length |
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1089 __ pushptr(vmarg); // bad array |
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1090 __ push((int)Bytecodes::_arraylength); // who is complaining? |
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diff
changeset
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1091 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 1092 |
1093 #undef UNPUSH_RSI_RDI | |
1094 } | |
1095 break; | |
1096 | |
1097 case _adapter_flyby: | |
1098 case _adapter_ricochet: | |
1099 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
1100 break; | |
1101 | |
1102 default: ShouldNotReachHere(); | |
1103 } | |
1104 __ hlt(); | |
1105 | |
1106 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry); | |
1107 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
1108 | |
1109 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie)); | |
1110 } |