Mercurial > hg > truffle
annotate src/cpu/x86/vm/methodHandles_x86.cpp @ 1627:c5f1ea9e15e8
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author | coleenp |
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date | Mon, 28 Jun 2010 12:03:05 -0400 |
parents | c18cbe5936b8 |
children | d257356e35f0 |
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710 | 1 /* |
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2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
710 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
710 | 22 * |
23 */ | |
24 | |
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 | |
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265 // which conversion op types are implemented here? |
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266 int MethodHandles::adapter_conversion_ops_supported_mask() { |
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267 return ((1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_ONLY) |
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268 |(1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_RAW) |
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269 |(1<<sun_dyn_AdapterMethodHandle::OP_CHECK_CAST) |
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270 |(1<<sun_dyn_AdapterMethodHandle::OP_PRIM_TO_PRIM) |
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271 |(1<<sun_dyn_AdapterMethodHandle::OP_REF_TO_PRIM) |
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272 |(1<<sun_dyn_AdapterMethodHandle::OP_SWAP_ARGS) |
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273 |(1<<sun_dyn_AdapterMethodHandle::OP_ROT_ARGS) |
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274 |(1<<sun_dyn_AdapterMethodHandle::OP_DUP_ARGS) |
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275 |(1<<sun_dyn_AdapterMethodHandle::OP_DROP_ARGS) |
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276 //|(1<<sun_dyn_AdapterMethodHandle::OP_SPREAD_ARGS) //BUG! |
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277 ); |
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278 // FIXME: MethodHandlesTest gets a crash if we enable OP_SPREAD_ARGS. |
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279 } |
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280 |
710 | 281 // Generate an "entry" field for a method handle. |
282 // This determines how the method handle will respond to calls. | |
283 void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) { | |
284 // Here is the register state during an interpreted call, | |
285 // as set up by generate_method_handle_interpreter_entry(): | |
286 // - rbx: garbage temp (was MethodHandle.invoke methodOop, unused) | |
287 // - rcx: receiver method handle | |
288 // - rax: method handle type (only used by the check_mtype entry point) | |
289 // - rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted) | |
290 // - rdx: garbage temp, can blow away | |
291 | |
292 Register rcx_recv = rcx; | |
293 Register rax_argslot = rax; | |
294 Register rbx_temp = rbx; | |
295 Register rdx_temp = rdx; | |
296 | |
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297 // This guy is set up by prepare_to_jump_from_interpreted (from interpreted calls) |
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298 // and gen_c2i_adapter (from compiled calls): |
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299 Register saved_last_sp = LP64_ONLY(r13) NOT_LP64(rsi); |
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300 |
710 | 301 guarantee(java_dyn_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets"); |
302 | |
303 // some handy addresses | |
304 Address rbx_method_fie( rbx, methodOopDesc::from_interpreted_offset() ); | |
305 | |
306 Address rcx_mh_vmtarget( rcx_recv, java_dyn_MethodHandle::vmtarget_offset_in_bytes() ); | |
307 Address rcx_dmh_vmindex( rcx_recv, sun_dyn_DirectMethodHandle::vmindex_offset_in_bytes() ); | |
308 | |
309 Address rcx_bmh_vmargslot( rcx_recv, sun_dyn_BoundMethodHandle::vmargslot_offset_in_bytes() ); | |
310 Address rcx_bmh_argument( rcx_recv, sun_dyn_BoundMethodHandle::argument_offset_in_bytes() ); | |
311 | |
312 Address rcx_amh_vmargslot( rcx_recv, sun_dyn_AdapterMethodHandle::vmargslot_offset_in_bytes() ); | |
313 Address rcx_amh_argument( rcx_recv, sun_dyn_AdapterMethodHandle::argument_offset_in_bytes() ); | |
314 Address rcx_amh_conversion( rcx_recv, sun_dyn_AdapterMethodHandle::conversion_offset_in_bytes() ); | |
315 Address vmarg; // __ argument_address(vmargslot) | |
316 | |
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317 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); |
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318 |
710 | 319 if (have_entry(ek)) { |
320 __ nop(); // empty stubs make SG sick | |
321 return; | |
322 } | |
323 | |
324 address interp_entry = __ pc(); | |
325 if (UseCompressedOops) __ unimplemented("UseCompressedOops"); | |
326 | |
327 #ifndef PRODUCT | |
328 if (TraceMethodHandles) { | |
329 __ push(rax); __ push(rbx); __ push(rcx); __ push(rdx); __ push(rsi); __ push(rdi); | |
330 __ lea(rax, Address(rsp, wordSize*6)); // entry_sp | |
331 // arguments: | |
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332 __ push(rbp); // interpreter frame pointer |
710 | 333 __ push(rsi); // saved_sp |
334 __ push(rax); // entry_sp | |
335 __ push(rcx); // mh | |
336 __ push(rcx); | |
337 __ movptr(Address(rsp, 0), (intptr_t)entry_name(ek)); | |
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338 __ call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub), 5); |
710 | 339 __ pop(rdi); __ pop(rsi); __ pop(rdx); __ pop(rcx); __ pop(rbx); __ pop(rax); |
340 } | |
341 #endif //PRODUCT | |
342 | |
343 switch ((int) ek) { | |
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344 case _raise_exception: |
710 | 345 { |
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346 // Not a real MH entry, but rather shared code for raising an exception. |
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347 // Extra local arguments are pushed on stack, as required type at TOS+8, |
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348 // failing object (or NULL) at TOS+4, failing bytecode type at TOS. |
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349 // Beyond those local arguments are the PC, of course. |
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350 Register rdx_code = rdx_temp; |
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351 Register rcx_fail = rcx_recv; |
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352 Register rax_want = rax_argslot; |
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353 Register rdi_pc = rdi; |
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354 __ pop(rdx_code); // TOS+0 |
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355 __ pop(rcx_fail); // TOS+4 |
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356 __ pop(rax_want); // TOS+8 |
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357 __ pop(rdi_pc); // caller PC |
710 | 358 |
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359 __ mov(rsp, rsi); // cut the stack back to where the caller started |
710 | 360 |
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361 // Repush the arguments as if coming from the interpreter. |
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362 __ push(rdx_code); |
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363 __ push(rcx_fail); |
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364 __ push(rax_want); |
710 | 365 |
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366 Register rbx_method = rbx_temp; |
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367 Label no_method; |
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368 // FIXME: fill in _raise_exception_method with a suitable sun.dyn method |
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369 __ movptr(rbx_method, ExternalAddress((address) &_raise_exception_method)); |
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370 __ testptr(rbx_method, rbx_method); |
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371 __ jccb(Assembler::zero, no_method); |
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372 int jobject_oop_offset = 0; |
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373 __ movptr(rbx_method, Address(rbx_method, jobject_oop_offset)); // dereference the jobject |
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374 __ testptr(rbx_method, rbx_method); |
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375 __ jccb(Assembler::zero, no_method); |
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376 __ verify_oop(rbx_method); |
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377 __ push(rdi_pc); // and restore caller PC |
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378 __ jmp(rbx_method_fie); |
710 | 379 |
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380 // If we get here, the Java runtime did not do its job of creating the exception. |
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381 // Do something that is at least causes a valid throw from the interpreter. |
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382 __ bind(no_method); |
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383 __ pop(rax_want); |
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384 __ pop(rcx_fail); |
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385 __ push(rax_want); |
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386 __ push(rcx_fail); |
710 | 387 __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry())); |
388 } | |
389 break; | |
390 | |
391 case _invokestatic_mh: | |
392 case _invokespecial_mh: | |
393 { | |
394 Register rbx_method = rbx_temp; | |
395 __ movptr(rbx_method, rcx_mh_vmtarget); // target is a methodOop | |
396 __ verify_oop(rbx_method); | |
397 // same as TemplateTable::invokestatic or invokespecial, | |
398 // minus the CP setup and profiling: | |
399 if (ek == _invokespecial_mh) { | |
400 // Must load & check the first argument before entering the target method. | |
401 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
402 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
403 __ null_check(rcx_recv); | |
404 __ verify_oop(rcx_recv); | |
405 } | |
406 __ jmp(rbx_method_fie); | |
407 } | |
408 break; | |
409 | |
410 case _invokevirtual_mh: | |
411 { | |
412 // same as TemplateTable::invokevirtual, | |
413 // minus the CP setup and profiling: | |
414 | |
415 // pick out the vtable index and receiver offset from the MH, | |
416 // and then we can discard it: | |
417 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
418 Register rbx_index = rbx_temp; | |
419 __ movl(rbx_index, rcx_dmh_vmindex); | |
420 // Note: The verifier allows us to ignore rcx_mh_vmtarget. | |
421 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
422 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes()); | |
423 | |
424 // get receiver klass | |
425 Register rax_klass = rax_argslot; | |
426 __ load_klass(rax_klass, rcx_recv); | |
427 __ verify_oop(rax_klass); | |
428 | |
429 // get target methodOop & entry point | |
430 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
431 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below"); | |
432 Address vtable_entry_addr(rax_klass, | |
433 rbx_index, Address::times_ptr, | |
434 base + vtableEntry::method_offset_in_bytes()); | |
435 Register rbx_method = rbx_temp; | |
1108 | 436 __ movptr(rbx_method, vtable_entry_addr); |
710 | 437 |
438 __ verify_oop(rbx_method); | |
439 __ jmp(rbx_method_fie); | |
440 } | |
441 break; | |
442 | |
443 case _invokeinterface_mh: | |
444 { | |
445 // same as TemplateTable::invokeinterface, | |
446 // minus the CP setup and profiling: | |
447 | |
448 // pick out the interface and itable index from the MH. | |
449 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
450 Register rdx_intf = rdx_temp; | |
451 Register rbx_index = rbx_temp; | |
452 __ movptr(rdx_intf, rcx_mh_vmtarget); | |
453 __ movl(rbx_index, rcx_dmh_vmindex); | |
454 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
455 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes()); | |
456 | |
457 // get receiver klass | |
458 Register rax_klass = rax_argslot; | |
459 __ load_klass(rax_klass, rcx_recv); | |
460 __ verify_oop(rax_klass); | |
461 | |
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462 Register rdi_temp = rdi; |
710 | 463 Register rbx_method = rbx_index; |
464 | |
465 // get interface klass | |
466 Label no_such_interface; | |
467 __ verify_oop(rdx_intf); | |
468 __ lookup_interface_method(rax_klass, rdx_intf, | |
469 // note: next two args must be the same: | |
470 rbx_index, rbx_method, | |
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471 rdi_temp, |
710 | 472 no_such_interface); |
473 | |
474 __ verify_oop(rbx_method); | |
475 __ jmp(rbx_method_fie); | |
476 __ hlt(); | |
477 | |
478 __ bind(no_such_interface); | |
479 // Throw an exception. | |
480 // For historical reasons, it will be IncompatibleClassChangeError. | |
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481 __ pushptr(Address(rdx_intf, java_mirror_offset)); // required interface |
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482 __ push(rcx_recv); // bad receiver |
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483 __ push((int)Bytecodes::_invokeinterface); // who is complaining? |
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484 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 485 } |
486 break; | |
487 | |
488 case _bound_ref_mh: | |
489 case _bound_int_mh: | |
490 case _bound_long_mh: | |
491 case _bound_ref_direct_mh: | |
492 case _bound_int_direct_mh: | |
493 case _bound_long_direct_mh: | |
494 { | |
495 bool direct_to_method = (ek >= _bound_ref_direct_mh); | |
1304 | 496 BasicType arg_type = T_ILLEGAL; |
497 int arg_mask = _INSERT_NO_MASK; | |
498 int arg_slots = -1; | |
499 get_ek_bound_mh_info(ek, arg_type, arg_mask, arg_slots); | |
710 | 500 |
501 // make room for the new argument: | |
502 __ movl(rax_argslot, rcx_bmh_vmargslot); | |
503 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
504 insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask, | |
505 rax_argslot, rbx_temp, rdx_temp); | |
506 | |
507 // store bound argument into the new stack slot: | |
508 __ movptr(rbx_temp, rcx_bmh_argument); | |
509 Address prim_value_addr(rbx_temp, java_lang_boxing_object::value_offset_in_bytes(arg_type)); | |
510 if (arg_type == T_OBJECT) { | |
511 __ movptr(Address(rax_argslot, 0), rbx_temp); | |
512 } else { | |
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513 __ load_sized_value(rdx_temp, prim_value_addr, |
710 | 514 type2aelembytes(arg_type), is_signed_subword_type(arg_type)); |
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515 __ movptr(Address(rax_argslot, 0), rdx_temp); |
710 | 516 #ifndef _LP64 |
517 if (arg_slots == 2) { | |
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518 __ movl(rdx_temp, prim_value_addr.plus_disp(wordSize)); |
1506 | 519 __ movl(Address(rax_argslot, Interpreter::stackElementSize), rdx_temp); |
710 | 520 } |
521 #endif //_LP64 | |
522 } | |
523 | |
524 if (direct_to_method) { | |
525 Register rbx_method = rbx_temp; | |
526 __ movptr(rbx_method, rcx_mh_vmtarget); | |
527 __ verify_oop(rbx_method); | |
528 __ jmp(rbx_method_fie); | |
529 } else { | |
530 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
531 __ verify_oop(rcx_recv); | |
532 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
533 } | |
534 } | |
535 break; | |
536 | |
537 case _adapter_retype_only: | |
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538 case _adapter_retype_raw: |
710 | 539 // immediately jump to the next MH layer: |
540 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
541 __ verify_oop(rcx_recv); | |
542 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
543 // This is OK when all parameter types widen. | |
544 // It is also OK when a return type narrows. | |
545 break; | |
546 | |
547 case _adapter_check_cast: | |
548 { | |
549 // temps: | |
550 Register rbx_klass = rbx_temp; // interesting AMH data | |
551 | |
552 // check a reference argument before jumping to the next layer of MH: | |
553 __ movl(rax_argslot, rcx_amh_vmargslot); | |
554 vmarg = __ argument_address(rax_argslot); | |
555 | |
556 // What class are we casting to? | |
557 __ movptr(rbx_klass, rcx_amh_argument); // this is a Class object! | |
558 __ movptr(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes())); | |
559 | |
560 Label done; | |
561 __ movptr(rdx_temp, vmarg); | |
1277 | 562 __ testptr(rdx_temp, rdx_temp); |
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563 __ jccb(Assembler::zero, done); // no cast if null |
710 | 564 __ load_klass(rdx_temp, rdx_temp); |
565 | |
566 // live at this point: | |
567 // - rbx_klass: klass required by the target method | |
568 // - rdx_temp: argument klass to test | |
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569 // - rcx_recv: adapter method handle |
710 | 570 __ check_klass_subtype(rdx_temp, rbx_klass, rax_argslot, done); |
571 | |
572 // If we get here, the type check failed! | |
573 // Call the wrong_method_type stub, passing the failing argument type in rax. | |
574 Register rax_mtype = rax_argslot; | |
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575 __ movl(rax_argslot, rcx_amh_vmargslot); // reload argslot field |
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576 __ movptr(rdx_temp, vmarg); |
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577 |
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578 __ pushptr(rcx_amh_argument); // required class |
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579 __ push(rdx_temp); // bad object |
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580 __ push((int)Bytecodes::_checkcast); // who is complaining? |
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581 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 582 |
583 __ bind(done); | |
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584 // get the new MH: |
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585 __ movptr(rcx_recv, rcx_mh_vmtarget); |
710 | 586 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
587 } | |
588 break; | |
589 | |
590 case _adapter_prim_to_prim: | |
591 case _adapter_ref_to_prim: | |
592 // handled completely by optimized cases | |
593 __ stop("init_AdapterMethodHandle should not issue this"); | |
594 break; | |
595 | |
596 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim | |
597 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim | |
598 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim | |
599 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim | |
600 { | |
601 // perform an in-place conversion to int or an int subword | |
602 __ movl(rax_argslot, rcx_amh_vmargslot); | |
603 vmarg = __ argument_address(rax_argslot); | |
604 | |
605 switch (ek) { | |
606 case _adapter_opt_i2i: | |
607 __ movl(rdx_temp, vmarg); | |
608 break; | |
609 case _adapter_opt_l2i: | |
610 { | |
611 // just delete the extra slot; on a little-endian machine we keep the first | |
612 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
613 remove_arg_slots(_masm, -stack_move_unit(), | |
614 rax_argslot, rbx_temp, rdx_temp); | |
1506 | 615 vmarg = Address(rax_argslot, -Interpreter::stackElementSize); |
710 | 616 __ movl(rdx_temp, vmarg); |
617 } | |
618 break; | |
619 case _adapter_opt_unboxi: | |
620 { | |
621 // Load the value up from the heap. | |
622 __ movptr(rdx_temp, vmarg); | |
623 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT); | |
624 #ifdef ASSERT | |
625 for (int bt = T_BOOLEAN; bt < T_INT; bt++) { | |
626 if (is_subword_type(BasicType(bt))) | |
627 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), ""); | |
628 } | |
629 #endif | |
630 __ null_check(rdx_temp, value_offset); | |
631 __ movl(rdx_temp, Address(rdx_temp, value_offset)); | |
632 // We load this as a word. Because we are little-endian, | |
633 // the low bits will be correct, but the high bits may need cleaning. | |
634 // The vminfo will guide us to clean those bits. | |
635 } | |
636 break; | |
637 default: | |
1304 | 638 ShouldNotReachHere(); |
710 | 639 } |
640 | |
1304 | 641 // Do the requested conversion and store the value. |
710 | 642 Register rbx_vminfo = rbx_temp; |
643 __ movl(rbx_vminfo, rcx_amh_conversion); | |
644 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
645 | |
646 // get the new MH: | |
647 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
648 // (now we are done with the old MH) | |
649 | |
650 // original 32-bit vmdata word must be of this form: | |
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651 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 | |
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652 __ xchgptr(rcx, rbx_vminfo); // free rcx for shifts |
710 | 653 __ shll(rdx_temp /*, rcx*/); |
654 Label zero_extend, done; | |
655 __ testl(rcx, CONV_VMINFO_SIGN_FLAG); | |
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656 __ jccb(Assembler::zero, zero_extend); |
710 | 657 |
658 // this path is taken for int->byte, int->short | |
659 __ sarl(rdx_temp /*, rcx*/); | |
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660 __ jmpb(done); |
710 | 661 |
662 __ bind(zero_extend); | |
663 // this is taken for int->char | |
664 __ shrl(rdx_temp /*, rcx*/); | |
665 | |
666 __ bind(done); | |
1304 | 667 __ movl(vmarg, rdx_temp); // Store the value. |
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668 __ xchgptr(rcx, rbx_vminfo); // restore rcx_recv |
710 | 669 |
670 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
671 } | |
672 break; | |
673 | |
674 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim | |
675 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim | |
676 { | |
677 // perform an in-place int-to-long or ref-to-long conversion | |
678 __ movl(rax_argslot, rcx_amh_vmargslot); | |
679 | |
680 // on a little-endian machine we keep the first slot and add another after | |
681 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
682 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, | |
683 rax_argslot, rbx_temp, rdx_temp); | |
1506 | 684 Address vmarg1(rax_argslot, -Interpreter::stackElementSize); |
685 Address vmarg2 = vmarg1.plus_disp(Interpreter::stackElementSize); | |
710 | 686 |
687 switch (ek) { | |
688 case _adapter_opt_i2l: | |
689 { | |
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690 #ifdef _LP64 |
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691 __ movslq(rdx_temp, vmarg1); // Load sign-extended |
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692 __ movq(vmarg1, rdx_temp); // Store into first slot |
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693 #else |
710 | 694 __ movl(rdx_temp, vmarg1); |
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695 __ sarl(rdx_temp, BitsPerInt - 1); // __ extend_sign() |
710 | 696 __ movl(vmarg2, rdx_temp); // store second word |
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697 #endif |
710 | 698 } |
699 break; | |
700 case _adapter_opt_unboxl: | |
701 { | |
702 // Load the value up from the heap. | |
703 __ movptr(rdx_temp, vmarg1); | |
704 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG); | |
705 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), ""); | |
706 __ null_check(rdx_temp, value_offset); | |
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707 #ifdef _LP64 |
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708 __ movq(rbx_temp, Address(rdx_temp, value_offset)); |
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709 __ movq(vmarg1, rbx_temp); |
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710 #else |
710 | 711 __ movl(rbx_temp, Address(rdx_temp, value_offset + 0*BytesPerInt)); |
712 __ movl(rdx_temp, Address(rdx_temp, value_offset + 1*BytesPerInt)); | |
713 __ movl(vmarg1, rbx_temp); | |
714 __ movl(vmarg2, rdx_temp); | |
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715 #endif |
710 | 716 } |
717 break; | |
718 default: | |
1304 | 719 ShouldNotReachHere(); |
710 | 720 } |
721 | |
722 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
723 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
724 } | |
725 break; | |
726 | |
727 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim | |
728 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim | |
729 { | |
730 // perform an in-place floating primitive conversion | |
731 __ movl(rax_argslot, rcx_amh_vmargslot); | |
732 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
733 if (ek == _adapter_opt_f2d) { | |
734 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, | |
735 rax_argslot, rbx_temp, rdx_temp); | |
736 } | |
1506 | 737 Address vmarg(rax_argslot, -Interpreter::stackElementSize); |
710 | 738 |
739 #ifdef _LP64 | |
740 if (ek == _adapter_opt_f2d) { | |
741 __ movflt(xmm0, vmarg); | |
742 __ cvtss2sd(xmm0, xmm0); | |
743 __ movdbl(vmarg, xmm0); | |
744 } else { | |
745 __ movdbl(xmm0, vmarg); | |
746 __ cvtsd2ss(xmm0, xmm0); | |
747 __ movflt(vmarg, xmm0); | |
748 } | |
749 #else //_LP64 | |
750 if (ek == _adapter_opt_f2d) { | |
751 __ fld_s(vmarg); // load float to ST0 | |
752 __ fstp_s(vmarg); // store single | |
1304 | 753 } else { |
710 | 754 __ fld_d(vmarg); // load double to ST0 |
755 __ fstp_s(vmarg); // store single | |
756 } | |
757 #endif //_LP64 | |
758 | |
759 if (ek == _adapter_opt_d2f) { | |
760 remove_arg_slots(_masm, -stack_move_unit(), | |
761 rax_argslot, rbx_temp, rdx_temp); | |
762 } | |
763 | |
764 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
765 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
766 } | |
767 break; | |
768 | |
769 case _adapter_prim_to_ref: | |
770 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
771 break; | |
772 | |
773 case _adapter_swap_args: | |
774 case _adapter_rot_args: | |
775 // handled completely by optimized cases | |
776 __ stop("init_AdapterMethodHandle should not issue this"); | |
777 break; | |
778 | |
779 case _adapter_opt_swap_1: | |
780 case _adapter_opt_swap_2: | |
781 case _adapter_opt_rot_1_up: | |
782 case _adapter_opt_rot_1_down: | |
783 case _adapter_opt_rot_2_up: | |
784 case _adapter_opt_rot_2_down: | |
785 { | |
1304 | 786 int swap_bytes = 0, rotate = 0; |
787 get_ek_adapter_opt_swap_rot_info(ek, swap_bytes, rotate); | |
710 | 788 |
789 // 'argslot' is the position of the first argument to swap | |
790 __ movl(rax_argslot, rcx_amh_vmargslot); | |
791 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
792 | |
793 // 'vminfo' is the second | |
794 Register rbx_destslot = rbx_temp; | |
795 __ movl(rbx_destslot, rcx_amh_conversion); | |
796 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
797 __ andl(rbx_destslot, CONV_VMINFO_MASK); | |
798 __ lea(rbx_destslot, __ argument_address(rbx_destslot)); | |
799 DEBUG_ONLY(verify_argslot(_masm, rbx_destslot, "swap point must fall within current frame")); | |
800 | |
801 if (!rotate) { | |
802 for (int i = 0; i < swap_bytes; i += wordSize) { | |
803 __ movptr(rdx_temp, Address(rax_argslot , i)); | |
804 __ push(rdx_temp); | |
805 __ movptr(rdx_temp, Address(rbx_destslot, i)); | |
806 __ movptr(Address(rax_argslot, i), rdx_temp); | |
807 __ pop(rdx_temp); | |
808 __ movptr(Address(rbx_destslot, i), rdx_temp); | |
809 } | |
810 } else { | |
811 // push the first chunk, which is going to get overwritten | |
812 for (int i = swap_bytes; (i -= wordSize) >= 0; ) { | |
813 __ movptr(rdx_temp, Address(rax_argslot, i)); | |
814 __ push(rdx_temp); | |
815 } | |
816 | |
817 if (rotate > 0) { | |
818 // rotate upward | |
819 __ subptr(rax_argslot, swap_bytes); | |
820 #ifdef ASSERT | |
821 { | |
822 // Verify that argslot > destslot, by at least swap_bytes. | |
823 Label L_ok; | |
824 __ cmpptr(rax_argslot, rbx_destslot); | |
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825 __ jccb(Assembler::aboveEqual, L_ok); |
710 | 826 __ stop("source must be above destination (upward rotation)"); |
827 __ bind(L_ok); | |
828 } | |
829 #endif | |
830 // work argslot down to destslot, copying contiguous data upwards | |
831 // pseudo-code: | |
832 // rax = src_addr - swap_bytes | |
833 // rbx = dest_addr | |
834 // while (rax >= rbx) *(rax + swap_bytes) = *(rax + 0), rax--; | |
835 Label loop; | |
836 __ bind(loop); | |
837 __ movptr(rdx_temp, Address(rax_argslot, 0)); | |
838 __ movptr(Address(rax_argslot, swap_bytes), rdx_temp); | |
839 __ addptr(rax_argslot, -wordSize); | |
840 __ cmpptr(rax_argslot, rbx_destslot); | |
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841 __ jccb(Assembler::aboveEqual, loop); |
710 | 842 } else { |
843 __ addptr(rax_argslot, swap_bytes); | |
844 #ifdef ASSERT | |
845 { | |
846 // Verify that argslot < destslot, by at least swap_bytes. | |
847 Label L_ok; | |
848 __ cmpptr(rax_argslot, rbx_destslot); | |
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849 __ jccb(Assembler::belowEqual, L_ok); |
710 | 850 __ stop("source must be below destination (downward rotation)"); |
851 __ bind(L_ok); | |
852 } | |
853 #endif | |
854 // work argslot up to destslot, copying contiguous data downwards | |
855 // pseudo-code: | |
856 // rax = src_addr + swap_bytes | |
857 // rbx = dest_addr | |
858 // while (rax <= rbx) *(rax - swap_bytes) = *(rax + 0), rax++; | |
859 Label loop; | |
860 __ bind(loop); | |
861 __ movptr(rdx_temp, Address(rax_argslot, 0)); | |
862 __ movptr(Address(rax_argslot, -swap_bytes), rdx_temp); | |
863 __ addptr(rax_argslot, wordSize); | |
864 __ cmpptr(rax_argslot, rbx_destslot); | |
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865 __ jccb(Assembler::belowEqual, loop); |
710 | 866 } |
867 | |
868 // pop the original first chunk into the destination slot, now free | |
869 for (int i = 0; i < swap_bytes; i += wordSize) { | |
870 __ pop(rdx_temp); | |
871 __ movptr(Address(rbx_destslot, i), rdx_temp); | |
872 } | |
873 } | |
874 | |
875 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
876 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
877 } | |
878 break; | |
879 | |
880 case _adapter_dup_args: | |
881 { | |
882 // 'argslot' is the position of the first argument to duplicate | |
883 __ movl(rax_argslot, rcx_amh_vmargslot); | |
884 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
885 | |
886 // 'stack_move' is negative number of words to duplicate | |
887 Register rdx_stack_move = rdx_temp; | |
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888 __ movl2ptr(rdx_stack_move, rcx_amh_conversion); |
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889 __ sarptr(rdx_stack_move, CONV_STACK_MOVE_SHIFT); |
710 | 890 |
891 int argslot0_num = 0; | |
892 Address argslot0 = __ argument_address(RegisterOrConstant(argslot0_num)); | |
893 assert(argslot0.base() == rsp, ""); | |
894 int pre_arg_size = argslot0.disp(); | |
895 assert(pre_arg_size % wordSize == 0, ""); | |
896 assert(pre_arg_size > 0, "must include PC"); | |
897 | |
898 // remember the old rsp+1 (argslot[0]) | |
899 Register rbx_oldarg = rbx_temp; | |
900 __ lea(rbx_oldarg, argslot0); | |
901 | |
902 // move rsp down to make room for dups | |
903 __ lea(rsp, Address(rsp, rdx_stack_move, Address::times_ptr)); | |
904 | |
905 // compute the new rsp+1 (argslot[0]) | |
906 Register rdx_newarg = rdx_temp; | |
907 __ lea(rdx_newarg, argslot0); | |
908 | |
909 __ push(rdi); // need a temp | |
910 // (preceding push must be done after arg addresses are taken!) | |
911 | |
912 // pull down the pre_arg_size data (PC) | |
913 for (int i = -pre_arg_size; i < 0; i += wordSize) { | |
914 __ movptr(rdi, Address(rbx_oldarg, i)); | |
915 __ movptr(Address(rdx_newarg, i), rdi); | |
916 } | |
917 | |
918 // copy from rax_argslot[0...] down to new_rsp[1...] | |
919 // pseudo-code: | |
920 // rbx = old_rsp+1 | |
921 // rdx = new_rsp+1 | |
922 // rax = argslot | |
923 // while (rdx < rbx) *rdx++ = *rax++ | |
924 Label loop; | |
925 __ bind(loop); | |
926 __ movptr(rdi, Address(rax_argslot, 0)); | |
927 __ movptr(Address(rdx_newarg, 0), rdi); | |
928 __ addptr(rax_argslot, wordSize); | |
929 __ addptr(rdx_newarg, wordSize); | |
930 __ cmpptr(rdx_newarg, rbx_oldarg); | |
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931 __ jccb(Assembler::less, loop); |
710 | 932 |
933 __ pop(rdi); // restore temp | |
934 | |
935 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
936 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
937 } | |
938 break; | |
939 | |
940 case _adapter_drop_args: | |
941 { | |
942 // 'argslot' is the position of the first argument to nuke | |
943 __ movl(rax_argslot, rcx_amh_vmargslot); | |
944 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
945 | |
946 __ push(rdi); // need a temp | |
947 // (must do previous push after argslot address is taken) | |
948 | |
949 // 'stack_move' is number of words to drop | |
950 Register rdi_stack_move = rdi; | |
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951 __ movl2ptr(rdi_stack_move, rcx_amh_conversion); |
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952 __ sarptr(rdi_stack_move, CONV_STACK_MOVE_SHIFT); |
710 | 953 remove_arg_slots(_masm, rdi_stack_move, |
954 rax_argslot, rbx_temp, rdx_temp); | |
955 | |
956 __ pop(rdi); // restore temp | |
957 | |
958 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
959 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
960 } | |
961 break; | |
962 | |
963 case _adapter_collect_args: | |
964 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
965 break; | |
966 | |
967 case _adapter_spread_args: | |
968 // handled completely by optimized cases | |
969 __ stop("init_AdapterMethodHandle should not issue this"); | |
970 break; | |
971 | |
972 case _adapter_opt_spread_0: | |
973 case _adapter_opt_spread_1: | |
974 case _adapter_opt_spread_more: | |
975 { | |
976 // spread an array out into a group of arguments | |
1304 | 977 int length_constant = get_ek_adapter_opt_spread_info(ek); |
710 | 978 |
979 // find the address of the array argument | |
980 __ movl(rax_argslot, rcx_amh_vmargslot); | |
981 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
982 | |
983 // grab some temps | |
984 { __ push(rsi); __ push(rdi); } | |
985 // (preceding pushes must be done after argslot address is taken!) | |
986 #define UNPUSH_RSI_RDI \ | |
987 { __ pop(rdi); __ pop(rsi); } | |
988 | |
989 // arx_argslot points both to the array and to the first output arg | |
990 vmarg = Address(rax_argslot, 0); | |
991 | |
992 // Get the array value. | |
993 Register rsi_array = rsi; | |
994 Register rdx_array_klass = rdx_temp; | |
995 BasicType elem_type = T_OBJECT; | |
996 int length_offset = arrayOopDesc::length_offset_in_bytes(); | |
997 int elem0_offset = arrayOopDesc::base_offset_in_bytes(elem_type); | |
998 __ movptr(rsi_array, vmarg); | |
999 Label skip_array_check; | |
1000 if (length_constant == 0) { | |
1001 __ testptr(rsi_array, rsi_array); | |
1002 __ jcc(Assembler::zero, skip_array_check); | |
1003 } | |
1004 __ null_check(rsi_array, oopDesc::klass_offset_in_bytes()); | |
1005 __ load_klass(rdx_array_klass, rsi_array); | |
1006 | |
1007 // Check the array type. | |
1008 Register rbx_klass = rbx_temp; | |
1009 __ movptr(rbx_klass, rcx_amh_argument); // this is a Class object! | |
1010 __ movptr(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes())); | |
1011 | |
1012 Label ok_array_klass, bad_array_klass, bad_array_length; | |
1013 __ check_klass_subtype(rdx_array_klass, rbx_klass, rdi, ok_array_klass); | |
1014 // If we get here, the type check failed! | |
1015 __ jmp(bad_array_klass); | |
1016 __ bind(ok_array_klass); | |
1017 | |
1018 // Check length. | |
1019 if (length_constant >= 0) { | |
1020 __ cmpl(Address(rsi_array, length_offset), length_constant); | |
1021 } else { | |
1022 Register rbx_vminfo = rbx_temp; | |
1023 __ movl(rbx_vminfo, rcx_amh_conversion); | |
1024 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
1025 __ andl(rbx_vminfo, CONV_VMINFO_MASK); | |
1026 __ cmpl(rbx_vminfo, Address(rsi_array, length_offset)); | |
1027 } | |
1028 __ jcc(Assembler::notEqual, bad_array_length); | |
1029 | |
1030 Register rdx_argslot_limit = rdx_temp; | |
1031 | |
1032 // Array length checks out. Now insert any required stack slots. | |
1033 if (length_constant == -1) { | |
1034 // Form a pointer to the end of the affected region. | |
1506 | 1035 __ lea(rdx_argslot_limit, Address(rax_argslot, Interpreter::stackElementSize)); |
710 | 1036 // 'stack_move' is negative number of words to insert |
1037 Register rdi_stack_move = rdi; | |
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1038 __ movl2ptr(rdi_stack_move, rcx_amh_conversion); |
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1039 __ sarptr(rdi_stack_move, CONV_STACK_MOVE_SHIFT); |
710 | 1040 Register rsi_temp = rsi_array; // spill this |
1041 insert_arg_slots(_masm, rdi_stack_move, -1, | |
1042 rax_argslot, rbx_temp, rsi_temp); | |
1043 // reload the array (since rsi was killed) | |
1044 __ movptr(rsi_array, vmarg); | |
1045 } else if (length_constant > 1) { | |
1046 int arg_mask = 0; | |
1047 int new_slots = (length_constant - 1); | |
1048 for (int i = 0; i < new_slots; i++) { | |
1049 arg_mask <<= 1; | |
1050 arg_mask |= _INSERT_REF_MASK; | |
1051 } | |
1052 insert_arg_slots(_masm, new_slots * stack_move_unit(), arg_mask, | |
1053 rax_argslot, rbx_temp, rdx_temp); | |
1054 } else if (length_constant == 1) { | |
1055 // no stack resizing required | |
1056 } else if (length_constant == 0) { | |
1057 remove_arg_slots(_masm, -stack_move_unit(), | |
1058 rax_argslot, rbx_temp, rdx_temp); | |
1059 } | |
1060 | |
1061 // Copy from the array to the new slots. | |
1062 // Note: Stack change code preserves integrity of rax_argslot pointer. | |
1063 // So even after slot insertions, rax_argslot still points to first argument. | |
1064 if (length_constant == -1) { | |
1065 // [rax_argslot, rdx_argslot_limit) is the area we are inserting into. | |
1066 Register rsi_source = rsi_array; | |
1067 __ lea(rsi_source, Address(rsi_array, elem0_offset)); | |
1068 Label loop; | |
1069 __ bind(loop); | |
1070 __ movptr(rbx_temp, Address(rsi_source, 0)); | |
1071 __ movptr(Address(rax_argslot, 0), rbx_temp); | |
1072 __ addptr(rsi_source, type2aelembytes(elem_type)); | |
1506 | 1073 __ addptr(rax_argslot, Interpreter::stackElementSize); |
710 | 1074 __ cmpptr(rax_argslot, rdx_argslot_limit); |
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1075 __ jccb(Assembler::less, loop); |
710 | 1076 } else if (length_constant == 0) { |
1077 __ bind(skip_array_check); | |
1078 // nothing to copy | |
1079 } else { | |
1080 int elem_offset = elem0_offset; | |
1081 int slot_offset = 0; | |
1082 for (int index = 0; index < length_constant; index++) { | |
1083 __ movptr(rbx_temp, Address(rsi_array, elem_offset)); | |
1084 __ movptr(Address(rax_argslot, slot_offset), rbx_temp); | |
1085 elem_offset += type2aelembytes(elem_type); | |
1506 | 1086 slot_offset += Interpreter::stackElementSize; |
710 | 1087 } |
1088 } | |
1089 | |
1090 // Arguments are spread. Move to next method handle. | |
1091 UNPUSH_RSI_RDI; | |
1092 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
1093 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
1094 | |
1095 __ bind(bad_array_klass); | |
1096 UNPUSH_RSI_RDI; | |
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1097 __ pushptr(Address(rdx_array_klass, java_mirror_offset)); // required type |
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1098 __ pushptr(vmarg); // bad array |
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1099 __ push((int)Bytecodes::_aaload); // who is complaining? |
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1100 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 1101 |
1102 __ bind(bad_array_length); | |
1103 UNPUSH_RSI_RDI; | |
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1104 __ push(rcx_recv); // AMH requiring a certain length |
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1105 __ pushptr(vmarg); // bad array |
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1106 __ push((int)Bytecodes::_arraylength); // who is complaining? |
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1107 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
710 | 1108 |
1109 #undef UNPUSH_RSI_RDI | |
1110 } | |
1111 break; | |
1112 | |
1113 case _adapter_flyby: | |
1114 case _adapter_ricochet: | |
1115 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
1116 break; | |
1117 | |
1118 default: ShouldNotReachHere(); | |
1119 } | |
1120 __ hlt(); | |
1121 | |
1122 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry); | |
1123 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
1124 | |
1125 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie)); | |
1126 } |