Mercurial > hg > graal-jvmci-8
annotate src/cpu/x86/vm/interp_masm_x86_32.cpp @ 1513:df736661d0c8
Merge
author | jrose |
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date | Tue, 11 May 2010 15:19:19 -0700 |
parents | 2338d41fbd81 |
children | c18cbe5936b8 ab102d5d923e |
rev | line source |
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0 | 1 /* |
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2 * Copyright 1997-2010 Sun Microsystems, Inc. All Rights Reserved. |
0 | 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/_interp_masm_x86_32.cpp.incl" | |
27 | |
28 | |
29 // Implementation of InterpreterMacroAssembler | |
30 #ifdef CC_INTERP | |
31 void InterpreterMacroAssembler::get_method(Register reg) { | |
304 | 32 movptr(reg, Address(rbp, -(sizeof(BytecodeInterpreter) + 2 * wordSize))); |
33 movptr(reg, Address(reg, byte_offset_of(BytecodeInterpreter, _method))); | |
0 | 34 } |
35 #endif // CC_INTERP | |
36 | |
37 | |
38 #ifndef CC_INTERP | |
39 void InterpreterMacroAssembler::call_VM_leaf_base( | |
40 address entry_point, | |
41 int number_of_arguments | |
42 ) { | |
43 // interpreter specific | |
44 // | |
45 // Note: No need to save/restore bcp & locals (rsi & rdi) pointer | |
46 // since these are callee saved registers and no blocking/ | |
47 // GC can happen in leaf calls. | |
48 // Further Note: DO NOT save/restore bcp/locals. If a caller has | |
49 // already saved them so that it can use rsi/rdi as temporaries | |
50 // then a save/restore here will DESTROY the copy the caller | |
51 // saved! There used to be a save_bcp() that only happened in | |
52 // the ASSERT path (no restore_bcp). Which caused bizarre failures | |
53 // when jvm built with ASSERTs. | |
54 #ifdef ASSERT | |
55 { Label L; | |
304 | 56 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 57 jcc(Assembler::equal, L); |
58 stop("InterpreterMacroAssembler::call_VM_leaf_base: last_sp != NULL"); | |
59 bind(L); | |
60 } | |
61 #endif | |
62 // super call | |
63 MacroAssembler::call_VM_leaf_base(entry_point, number_of_arguments); | |
64 // interpreter specific | |
65 | |
66 // Used to ASSERT that rsi/rdi were equal to frame's bcp/locals | |
67 // but since they may not have been saved (and we don't want to | |
68 // save them here (see note above) the assert is invalid. | |
69 } | |
70 | |
71 | |
72 void InterpreterMacroAssembler::call_VM_base( | |
73 Register oop_result, | |
74 Register java_thread, | |
75 Register last_java_sp, | |
76 address entry_point, | |
77 int number_of_arguments, | |
78 bool check_exceptions | |
79 ) { | |
80 #ifdef ASSERT | |
81 { Label L; | |
304 | 82 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 83 jcc(Assembler::equal, L); |
84 stop("InterpreterMacroAssembler::call_VM_base: last_sp != NULL"); | |
85 bind(L); | |
86 } | |
87 #endif /* ASSERT */ | |
88 // interpreter specific | |
89 // | |
90 // Note: Could avoid restoring locals ptr (callee saved) - however doesn't | |
91 // really make a difference for these runtime calls, since they are | |
92 // slow anyway. Btw., bcp must be saved/restored since it may change | |
93 // due to GC. | |
94 assert(java_thread == noreg , "not expecting a precomputed java thread"); | |
95 save_bcp(); | |
96 // super call | |
97 MacroAssembler::call_VM_base(oop_result, java_thread, last_java_sp, entry_point, number_of_arguments, check_exceptions); | |
98 // interpreter specific | |
99 restore_bcp(); | |
100 restore_locals(); | |
101 } | |
102 | |
103 | |
104 void InterpreterMacroAssembler::check_and_handle_popframe(Register java_thread) { | |
105 if (JvmtiExport::can_pop_frame()) { | |
106 Label L; | |
107 // Initiate popframe handling only if it is not already being processed. If the flag | |
108 // has the popframe_processing bit set, it means that this code is called *during* popframe | |
109 // handling - we don't want to reenter. | |
110 Register pop_cond = java_thread; // Not clear if any other register is available... | |
111 movl(pop_cond, Address(java_thread, JavaThread::popframe_condition_offset())); | |
112 testl(pop_cond, JavaThread::popframe_pending_bit); | |
113 jcc(Assembler::zero, L); | |
114 testl(pop_cond, JavaThread::popframe_processing_bit); | |
115 jcc(Assembler::notZero, L); | |
116 // Call Interpreter::remove_activation_preserving_args_entry() to get the | |
117 // address of the same-named entrypoint in the generated interpreter code. | |
118 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry)); | |
119 jmp(rax); | |
120 bind(L); | |
121 get_thread(java_thread); | |
122 } | |
123 } | |
124 | |
125 | |
126 void InterpreterMacroAssembler::load_earlyret_value(TosState state) { | |
127 get_thread(rcx); | |
128 movl(rcx, Address(rcx, JavaThread::jvmti_thread_state_offset())); | |
129 const Address tos_addr (rcx, JvmtiThreadState::earlyret_tos_offset()); | |
130 const Address oop_addr (rcx, JvmtiThreadState::earlyret_oop_offset()); | |
131 const Address val_addr (rcx, JvmtiThreadState::earlyret_value_offset()); | |
132 const Address val_addr1(rcx, JvmtiThreadState::earlyret_value_offset() | |
133 + in_ByteSize(wordSize)); | |
134 switch (state) { | |
304 | 135 case atos: movptr(rax, oop_addr); |
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136 movptr(oop_addr, NULL_WORD); |
0 | 137 verify_oop(rax, state); break; |
304 | 138 case ltos: |
139 movl(rdx, val_addr1); // fall through | |
0 | 140 case btos: // fall through |
141 case ctos: // fall through | |
142 case stos: // fall through | |
143 case itos: movl(rax, val_addr); break; | |
144 case ftos: fld_s(val_addr); break; | |
145 case dtos: fld_d(val_addr); break; | |
146 case vtos: /* nothing to do */ break; | |
147 default : ShouldNotReachHere(); | |
148 } | |
149 // Clean up tos value in the thread object | |
304 | 150 movl(tos_addr, (int32_t) ilgl); |
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151 movptr(val_addr, NULL_WORD); |
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152 NOT_LP64(movptr(val_addr1, NULL_WORD)); |
0 | 153 } |
154 | |
155 | |
156 void InterpreterMacroAssembler::check_and_handle_earlyret(Register java_thread) { | |
157 if (JvmtiExport::can_force_early_return()) { | |
158 Label L; | |
159 Register tmp = java_thread; | |
304 | 160 movptr(tmp, Address(tmp, JavaThread::jvmti_thread_state_offset())); |
161 testptr(tmp, tmp); | |
0 | 162 jcc(Assembler::zero, L); // if (thread->jvmti_thread_state() == NULL) exit; |
163 | |
164 // Initiate earlyret handling only if it is not already being processed. | |
165 // If the flag has the earlyret_processing bit set, it means that this code | |
166 // is called *during* earlyret handling - we don't want to reenter. | |
167 movl(tmp, Address(tmp, JvmtiThreadState::earlyret_state_offset())); | |
168 cmpl(tmp, JvmtiThreadState::earlyret_pending); | |
169 jcc(Assembler::notEqual, L); | |
170 | |
171 // Call Interpreter::remove_activation_early_entry() to get the address of the | |
172 // same-named entrypoint in the generated interpreter code. | |
173 get_thread(java_thread); | |
304 | 174 movptr(tmp, Address(java_thread, JavaThread::jvmti_thread_state_offset())); |
0 | 175 pushl(Address(tmp, JvmtiThreadState::earlyret_tos_offset())); |
176 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), 1); | |
177 jmp(rax); | |
178 bind(L); | |
179 get_thread(java_thread); | |
180 } | |
181 } | |
182 | |
183 | |
184 void InterpreterMacroAssembler::get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset) { | |
185 assert(bcp_offset >= 0, "bcp is still pointing to start of bytecode"); | |
186 movl(reg, Address(rsi, bcp_offset)); | |
304 | 187 bswapl(reg); |
0 | 188 shrl(reg, 16); |
189 } | |
190 | |
191 | |
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192 void InterpreterMacroAssembler::get_cache_index_at_bcp(Register reg, int bcp_offset, bool giant_index) { |
0 | 193 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); |
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194 if (!giant_index) { |
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195 load_unsigned_short(reg, Address(rsi, bcp_offset)); |
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196 } else { |
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197 assert(EnableInvokeDynamic, "giant index used only for EnableInvokeDynamic"); |
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198 movl(reg, Address(rsi, bcp_offset)); |
1108 | 199 // Check if the secondary index definition is still ~x, otherwise |
200 // we have to change the following assembler code to calculate the | |
201 // plain index. | |
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202 assert(constantPoolCacheOopDesc::decode_secondary_index(~123) == 123, "else change next line"); |
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203 notl(reg); // convert to plain index |
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204 } |
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205 } |
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206 |
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207 |
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208 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register index, |
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209 int bcp_offset, bool giant_index) { |
0 | 210 assert(cache != index, "must use different registers"); |
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211 get_cache_index_at_bcp(index, bcp_offset, giant_index); |
304 | 212 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
0 | 213 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below"); |
304 | 214 shlptr(index, 2); // convert from field index to ConstantPoolCacheEntry index |
0 | 215 } |
216 | |
217 | |
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218 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp, |
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219 int bcp_offset, bool giant_index) { |
0 | 220 assert(cache != tmp, "must use different register"); |
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221 get_cache_index_at_bcp(tmp, bcp_offset, giant_index); |
0 | 222 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below"); |
223 // convert from field index to ConstantPoolCacheEntry index | |
224 // and from word offset to byte offset | |
225 shll(tmp, 2 + LogBytesPerWord); | |
304 | 226 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
0 | 227 // skip past the header |
304 | 228 addptr(cache, in_bytes(constantPoolCacheOopDesc::base_offset())); |
229 addptr(cache, tmp); // construct pointer to cache entry | |
0 | 230 } |
231 | |
232 | |
233 // Generate a subtype check: branch to ok_is_subtype if sub_klass is | |
234 // a subtype of super_klass. EAX holds the super_klass. Blows ECX. | |
235 // Resets EDI to locals. Register sub_klass cannot be any of the above. | |
236 void InterpreterMacroAssembler::gen_subtype_check( Register Rsub_klass, Label &ok_is_subtype ) { | |
237 assert( Rsub_klass != rax, "rax, holds superklass" ); | |
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238 assert( Rsub_klass != rcx, "used as a temp" ); |
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239 assert( Rsub_klass != rdi, "used as a temp, restored from locals" ); |
0 | 240 |
241 // Profile the not-null value's klass. | |
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242 profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, reloads rdi |
0 | 243 |
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244 // Do the check. |
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245 check_klass_subtype(Rsub_klass, rax, rcx, ok_is_subtype); // blows rcx |
0 | 246 |
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247 // Profile the failure of the check. |
0 | 248 profile_typecheck_failed(rcx); // blows rcx |
249 } | |
250 | |
251 void InterpreterMacroAssembler::f2ieee() { | |
252 if (IEEEPrecision) { | |
253 fstp_s(Address(rsp, 0)); | |
254 fld_s(Address(rsp, 0)); | |
255 } | |
256 } | |
257 | |
258 | |
259 void InterpreterMacroAssembler::d2ieee() { | |
260 if (IEEEPrecision) { | |
261 fstp_d(Address(rsp, 0)); | |
262 fld_d(Address(rsp, 0)); | |
263 } | |
264 } | |
265 | |
266 // Java Expression Stack | |
267 | |
268 void InterpreterMacroAssembler::pop_ptr(Register r) { | |
304 | 269 pop(r); |
0 | 270 } |
271 | |
272 void InterpreterMacroAssembler::pop_i(Register r) { | |
304 | 273 pop(r); |
0 | 274 } |
275 | |
276 void InterpreterMacroAssembler::pop_l(Register lo, Register hi) { | |
304 | 277 pop(lo); |
278 pop(hi); | |
0 | 279 } |
280 | |
281 void InterpreterMacroAssembler::pop_f() { | |
282 fld_s(Address(rsp, 0)); | |
304 | 283 addptr(rsp, 1 * wordSize); |
0 | 284 } |
285 | |
286 void InterpreterMacroAssembler::pop_d() { | |
287 fld_d(Address(rsp, 0)); | |
304 | 288 addptr(rsp, 2 * wordSize); |
0 | 289 } |
290 | |
291 | |
292 void InterpreterMacroAssembler::pop(TosState state) { | |
293 switch (state) { | |
294 case atos: pop_ptr(rax); break; | |
295 case btos: // fall through | |
296 case ctos: // fall through | |
297 case stos: // fall through | |
298 case itos: pop_i(rax); break; | |
299 case ltos: pop_l(rax, rdx); break; | |
300 case ftos: pop_f(); break; | |
301 case dtos: pop_d(); break; | |
302 case vtos: /* nothing to do */ break; | |
303 default : ShouldNotReachHere(); | |
304 } | |
305 verify_oop(rax, state); | |
306 } | |
307 | |
308 void InterpreterMacroAssembler::push_ptr(Register r) { | |
304 | 309 push(r); |
0 | 310 } |
311 | |
312 void InterpreterMacroAssembler::push_i(Register r) { | |
304 | 313 push(r); |
0 | 314 } |
315 | |
316 void InterpreterMacroAssembler::push_l(Register lo, Register hi) { | |
304 | 317 push(hi); |
318 push(lo); | |
0 | 319 } |
320 | |
321 void InterpreterMacroAssembler::push_f() { | |
322 // Do not schedule for no AGI! Never write beyond rsp! | |
304 | 323 subptr(rsp, 1 * wordSize); |
0 | 324 fstp_s(Address(rsp, 0)); |
325 } | |
326 | |
327 void InterpreterMacroAssembler::push_d(Register r) { | |
1506 | 328 // Do not schedule for no AGI! Never write beyond rsp! |
329 subptr(rsp, 2 * wordSize); | |
330 fstp_d(Address(rsp, 0)); | |
0 | 331 } |
332 | |
333 | |
334 void InterpreterMacroAssembler::push(TosState state) { | |
335 verify_oop(rax, state); | |
336 switch (state) { | |
337 case atos: push_ptr(rax); break; | |
338 case btos: // fall through | |
339 case ctos: // fall through | |
340 case stos: // fall through | |
341 case itos: push_i(rax); break; | |
342 case ltos: push_l(rax, rdx); break; | |
343 case ftos: push_f(); break; | |
344 case dtos: push_d(rax); break; | |
345 case vtos: /* nothing to do */ break; | |
346 default : ShouldNotReachHere(); | |
347 } | |
348 } | |
349 | |
350 | |
1506 | 351 // Helpers for swap and dup |
352 void InterpreterMacroAssembler::load_ptr(int n, Register val) { | |
304 | 353 movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n))); |
0 | 354 } |
355 | |
1506 | 356 void InterpreterMacroAssembler::store_ptr(int n, Register val) { |
357 movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val); | |
0 | 358 } |
359 | |
360 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point) { | |
361 MacroAssembler::call_VM_leaf_base(entry_point, 0); | |
362 } | |
363 | |
364 | |
365 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1) { | |
304 | 366 push(arg_1); |
0 | 367 MacroAssembler::call_VM_leaf_base(entry_point, 1); |
368 } | |
369 | |
370 | |
371 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2) { | |
304 | 372 push(arg_2); |
373 push(arg_1); | |
0 | 374 MacroAssembler::call_VM_leaf_base(entry_point, 2); |
375 } | |
376 | |
377 | |
378 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3) { | |
304 | 379 push(arg_3); |
380 push(arg_2); | |
381 push(arg_1); | |
0 | 382 MacroAssembler::call_VM_leaf_base(entry_point, 3); |
383 } | |
384 | |
385 | |
710 | 386 void InterpreterMacroAssembler::prepare_to_jump_from_interpreted() { |
0 | 387 // set sender sp |
304 | 388 lea(rsi, Address(rsp, wordSize)); |
0 | 389 // record last_sp |
304 | 390 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), rsi); |
710 | 391 } |
392 | |
393 | |
394 // Jump to from_interpreted entry of a call unless single stepping is possible | |
395 // in this thread in which case we must call the i2i entry | |
396 void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) { | |
397 prepare_to_jump_from_interpreted(); | |
0 | 398 |
399 if (JvmtiExport::can_post_interpreter_events()) { | |
400 Label run_compiled_code; | |
401 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
402 // compiled code in threads for which the event is enabled. Check here for | |
403 // interp_only_mode if these events CAN be enabled. | |
404 get_thread(temp); | |
405 // interp_only is an int, on little endian it is sufficient to test the byte only | |
406 // Is a cmpl faster (ce | |
407 cmpb(Address(temp, JavaThread::interp_only_mode_offset()), 0); | |
408 jcc(Assembler::zero, run_compiled_code); | |
409 jmp(Address(method, methodOopDesc::interpreter_entry_offset())); | |
410 bind(run_compiled_code); | |
411 } | |
412 | |
413 jmp(Address(method, methodOopDesc::from_interpreted_offset())); | |
414 | |
415 } | |
416 | |
417 | |
418 // The following two routines provide a hook so that an implementation | |
419 // can schedule the dispatch in two parts. Intel does not do this. | |
420 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) { | |
421 // Nothing Intel-specific to be done here. | |
422 } | |
423 | |
424 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) { | |
425 dispatch_next(state, step); | |
426 } | |
427 | |
428 void InterpreterMacroAssembler::dispatch_base(TosState state, address* table, | |
429 bool verifyoop) { | |
430 verify_FPU(1, state); | |
431 if (VerifyActivationFrameSize) { | |
432 Label L; | |
304 | 433 mov(rcx, rbp); |
434 subptr(rcx, rsp); | |
0 | 435 int min_frame_size = (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * wordSize; |
304 | 436 cmpptr(rcx, min_frame_size); |
0 | 437 jcc(Assembler::greaterEqual, L); |
438 stop("broken stack frame"); | |
439 bind(L); | |
440 } | |
441 if (verifyoop) verify_oop(rax, state); | |
304 | 442 Address index(noreg, rbx, Address::times_ptr); |
0 | 443 ExternalAddress tbl((address)table); |
444 ArrayAddress dispatch(tbl, index); | |
445 jump(dispatch); | |
446 } | |
447 | |
448 | |
449 void InterpreterMacroAssembler::dispatch_only(TosState state) { | |
450 dispatch_base(state, Interpreter::dispatch_table(state)); | |
451 } | |
452 | |
453 | |
454 void InterpreterMacroAssembler::dispatch_only_normal(TosState state) { | |
455 dispatch_base(state, Interpreter::normal_table(state)); | |
456 } | |
457 | |
458 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) { | |
459 dispatch_base(state, Interpreter::normal_table(state), false); | |
460 } | |
461 | |
462 | |
463 void InterpreterMacroAssembler::dispatch_next(TosState state, int step) { | |
464 // load next bytecode (load before advancing rsi to prevent AGI) | |
465 load_unsigned_byte(rbx, Address(rsi, step)); | |
466 // advance rsi | |
467 increment(rsi, step); | |
468 dispatch_base(state, Interpreter::dispatch_table(state)); | |
469 } | |
470 | |
471 | |
472 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
473 // load current bytecode | |
474 load_unsigned_byte(rbx, Address(rsi, 0)); | |
475 dispatch_base(state, table); | |
476 } | |
477 | |
478 // remove activation | |
479 // | |
480 // Unlock the receiver if this is a synchronized method. | |
481 // Unlock any Java monitors from syncronized blocks. | |
482 // Remove the activation from the stack. | |
483 // | |
484 // If there are locked Java monitors | |
485 // If throw_monitor_exception | |
486 // throws IllegalMonitorStateException | |
487 // Else if install_monitor_exception | |
488 // installs IllegalMonitorStateException | |
489 // Else | |
490 // no error processing | |
491 void InterpreterMacroAssembler::remove_activation(TosState state, Register ret_addr, | |
492 bool throw_monitor_exception, | |
493 bool install_monitor_exception, | |
494 bool notify_jvmdi) { | |
495 // Note: Registers rax, rdx and FPU ST(0) may be in use for the result | |
496 // check if synchronized method | |
497 Label unlocked, unlock, no_unlock; | |
498 | |
499 get_thread(rcx); | |
500 const Address do_not_unlock_if_synchronized(rcx, | |
501 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
502 | |
503 movbool(rbx, do_not_unlock_if_synchronized); | |
304 | 504 mov(rdi,rbx); |
0 | 505 movbool(do_not_unlock_if_synchronized, false); // reset the flag |
506 | |
304 | 507 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); // get method access flags |
0 | 508 movl(rcx, Address(rbx, methodOopDesc::access_flags_offset())); |
509 | |
510 testl(rcx, JVM_ACC_SYNCHRONIZED); | |
511 jcc(Assembler::zero, unlocked); | |
512 | |
513 // Don't unlock anything if the _do_not_unlock_if_synchronized flag | |
514 // is set. | |
304 | 515 mov(rcx,rdi); |
0 | 516 testbool(rcx); |
517 jcc(Assembler::notZero, no_unlock); | |
518 | |
519 // unlock monitor | |
520 push(state); // save result | |
521 | |
522 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
523 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
524 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); | |
304 | 525 lea (rdx, monitor); // address of first monitor |
0 | 526 |
304 | 527 movptr (rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); |
528 testptr(rax, rax); | |
529 jcc (Assembler::notZero, unlock); | |
0 | 530 |
531 pop(state); | |
532 if (throw_monitor_exception) { | |
533 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
534 | |
535 // Entry already unlocked, need to throw exception | |
536 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
537 should_not_reach_here(); | |
538 } else { | |
539 // Monitor already unlocked during a stack unroll. | |
540 // If requested, install an illegal_monitor_state_exception. | |
541 // Continue with stack unrolling. | |
542 if (install_monitor_exception) { | |
543 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
544 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
545 } | |
546 jmp(unlocked); | |
547 } | |
548 | |
549 bind(unlock); | |
550 unlock_object(rdx); | |
551 pop(state); | |
552 | |
553 // Check that for block-structured locking (i.e., that all locked objects has been unlocked) | |
554 bind(unlocked); | |
555 | |
556 // rax, rdx: Might contain return value | |
557 | |
558 // Check that all monitors are unlocked | |
559 { | |
560 Label loop, exception, entry, restart; | |
561 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
562 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
563 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
564 | |
565 bind(restart); | |
304 | 566 movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry |
567 lea(rbx, monitor_block_bot); // points to word before bottom of monitor block | |
0 | 568 jmp(entry); |
569 | |
570 // Entry already locked, need to throw exception | |
571 bind(exception); | |
572 | |
573 if (throw_monitor_exception) { | |
574 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
575 | |
576 // Throw exception | |
577 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
578 should_not_reach_here(); | |
579 } else { | |
580 // Stack unrolling. Unlock object and install illegal_monitor_exception | |
581 // Unlock does not block, so don't have to worry about the frame | |
582 | |
583 push(state); | |
304 | 584 mov(rdx, rcx); |
0 | 585 unlock_object(rdx); |
586 pop(state); | |
587 | |
588 if (install_monitor_exception) { | |
589 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
590 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
591 } | |
592 | |
593 jmp(restart); | |
594 } | |
595 | |
596 bind(loop); | |
304 | 597 cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used |
0 | 598 jcc(Assembler::notEqual, exception); |
599 | |
304 | 600 addptr(rcx, entry_size); // otherwise advance to next entry |
0 | 601 bind(entry); |
304 | 602 cmpptr(rcx, rbx); // check if bottom reached |
0 | 603 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
604 } | |
605 | |
606 bind(no_unlock); | |
607 | |
608 // jvmti support | |
609 if (notify_jvmdi) { | |
610 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA | |
611 } else { | |
612 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA | |
613 } | |
614 | |
615 // remove activation | |
304 | 616 movptr(rbx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 617 leave(); // remove frame anchor |
304 | 618 pop(ret_addr); // get return address |
619 mov(rsp, rbx); // set sp to sender sp | |
0 | 620 if (UseSSE) { |
621 // float and double are returned in xmm register in SSE-mode | |
622 if (state == ftos && UseSSE >= 1) { | |
304 | 623 subptr(rsp, wordSize); |
0 | 624 fstp_s(Address(rsp, 0)); |
625 movflt(xmm0, Address(rsp, 0)); | |
304 | 626 addptr(rsp, wordSize); |
0 | 627 } else if (state == dtos && UseSSE >= 2) { |
304 | 628 subptr(rsp, 2*wordSize); |
0 | 629 fstp_d(Address(rsp, 0)); |
630 movdbl(xmm0, Address(rsp, 0)); | |
304 | 631 addptr(rsp, 2*wordSize); |
0 | 632 } |
633 } | |
634 } | |
635 | |
636 #endif /* !CC_INTERP */ | |
637 | |
638 | |
639 // Lock object | |
640 // | |
641 // Argument: rdx : Points to BasicObjectLock to be used for locking. Must | |
642 // be initialized with object to lock | |
643 void InterpreterMacroAssembler::lock_object(Register lock_reg) { | |
644 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
645 | |
646 if (UseHeavyMonitors) { | |
647 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
648 } else { | |
649 | |
650 Label done; | |
651 | |
652 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
653 const Register obj_reg = rcx; // Will contain the oop | |
654 | |
655 const int obj_offset = BasicObjectLock::obj_offset_in_bytes(); | |
656 const int lock_offset = BasicObjectLock::lock_offset_in_bytes (); | |
657 const int mark_offset = lock_offset + BasicLock::displaced_header_offset_in_bytes(); | |
658 | |
659 Label slow_case; | |
660 | |
661 // Load object pointer into obj_reg %rcx | |
304 | 662 movptr(obj_reg, Address(lock_reg, obj_offset)); |
0 | 663 |
664 if (UseBiasedLocking) { | |
665 // Note: we use noreg for the temporary register since it's hard | |
666 // to come up with a free register on all incoming code paths | |
667 biased_locking_enter(lock_reg, obj_reg, swap_reg, noreg, false, done, &slow_case); | |
668 } | |
669 | |
670 // Load immediate 1 into swap_reg %rax, | |
304 | 671 movptr(swap_reg, (int32_t)1); |
0 | 672 |
673 // Load (object->mark() | 1) into swap_reg %rax, | |
304 | 674 orptr(swap_reg, Address(obj_reg, 0)); |
0 | 675 |
676 // Save (object->mark() | 1) into BasicLock's displaced header | |
304 | 677 movptr(Address(lock_reg, mark_offset), swap_reg); |
0 | 678 |
679 assert(lock_offset == 0, "displached header must be first word in BasicObjectLock"); | |
680 if (os::is_MP()) { | |
681 lock(); | |
682 } | |
304 | 683 cmpxchgptr(lock_reg, Address(obj_reg, 0)); |
0 | 684 if (PrintBiasedLockingStatistics) { |
685 cond_inc32(Assembler::zero, | |
686 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
687 } | |
688 jcc(Assembler::zero, done); | |
689 | |
690 // Test if the oopMark is an obvious stack pointer, i.e., | |
691 // 1) (mark & 3) == 0, and | |
692 // 2) rsp <= mark < mark + os::pagesize() | |
693 // | |
694 // These 3 tests can be done by evaluating the following | |
695 // expression: ((mark - rsp) & (3 - os::vm_page_size())), | |
696 // assuming both stack pointer and pagesize have their | |
697 // least significant 2 bits clear. | |
698 // NOTE: the oopMark is in swap_reg %rax, as the result of cmpxchg | |
304 | 699 subptr(swap_reg, rsp); |
700 andptr(swap_reg, 3 - os::vm_page_size()); | |
0 | 701 |
702 // Save the test result, for recursive case, the result is zero | |
304 | 703 movptr(Address(lock_reg, mark_offset), swap_reg); |
0 | 704 |
705 if (PrintBiasedLockingStatistics) { | |
706 cond_inc32(Assembler::zero, | |
707 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
708 } | |
709 jcc(Assembler::zero, done); | |
710 | |
711 bind(slow_case); | |
712 | |
713 // Call the runtime routine for slow case | |
714 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
715 | |
716 bind(done); | |
717 } | |
718 } | |
719 | |
720 | |
721 // Unlocks an object. Used in monitorexit bytecode and remove_activation. | |
722 // | |
723 // Argument: rdx : Points to BasicObjectLock structure for lock | |
724 // Throw an IllegalMonitorException if object is not locked by current thread | |
725 // | |
726 // Uses: rax, rbx, rcx, rdx | |
727 void InterpreterMacroAssembler::unlock_object(Register lock_reg) { | |
728 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
729 | |
730 if (UseHeavyMonitors) { | |
731 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); | |
732 } else { | |
733 Label done; | |
734 | |
735 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
736 const Register header_reg = rbx; // Will contain the old oopMark | |
737 const Register obj_reg = rcx; // Will contain the oop | |
738 | |
739 save_bcp(); // Save in case of exception | |
740 | |
741 // Convert from BasicObjectLock structure to object and BasicLock structure | |
742 // Store the BasicLock address into %rax, | |
304 | 743 lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes())); |
0 | 744 |
745 // Load oop into obj_reg(%rcx) | |
304 | 746 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes ())); |
0 | 747 |
748 // Free entry | |
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749 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), NULL_WORD); |
0 | 750 |
751 if (UseBiasedLocking) { | |
752 biased_locking_exit(obj_reg, header_reg, done); | |
753 } | |
754 | |
755 // Load the old header from BasicLock structure | |
304 | 756 movptr(header_reg, Address(swap_reg, BasicLock::displaced_header_offset_in_bytes())); |
0 | 757 |
758 // Test for recursion | |
304 | 759 testptr(header_reg, header_reg); |
0 | 760 |
761 // zero for recursive case | |
762 jcc(Assembler::zero, done); | |
763 | |
764 // Atomic swap back the old header | |
765 if (os::is_MP()) lock(); | |
304 | 766 cmpxchgptr(header_reg, Address(obj_reg, 0)); |
0 | 767 |
768 // zero for recursive case | |
769 jcc(Assembler::zero, done); | |
770 | |
771 // Call the runtime routine for slow case. | |
304 | 772 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), obj_reg); // restore obj |
0 | 773 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); |
774 | |
775 bind(done); | |
776 | |
777 restore_bcp(); | |
778 } | |
779 } | |
780 | |
781 | |
782 #ifndef CC_INTERP | |
783 | |
784 // Test ImethodDataPtr. If it is null, continue at the specified label | |
785 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, Label& zero_continue) { | |
786 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 787 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize)); |
788 testptr(mdp, mdp); | |
0 | 789 jcc(Assembler::zero, zero_continue); |
790 } | |
791 | |
792 | |
793 // Set the method data pointer for the current bcp. | |
794 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
795 assert(ProfileInterpreter, "must be profiling interpreter"); | |
796 Label zero_continue; | |
304 | 797 push(rax); |
798 push(rbx); | |
0 | 799 |
800 get_method(rbx); | |
801 // Test MDO to avoid the call if it is NULL. | |
304 | 802 movptr(rax, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
803 testptr(rax, rax); | |
0 | 804 jcc(Assembler::zero, zero_continue); |
805 | |
806 // rbx,: method | |
807 // rsi: bcp | |
808 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, rsi); | |
809 // rax,: mdi | |
810 | |
304 | 811 movptr(rbx, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
812 testptr(rbx, rbx); | |
0 | 813 jcc(Assembler::zero, zero_continue); |
304 | 814 addptr(rbx, in_bytes(methodDataOopDesc::data_offset())); |
815 addptr(rbx, rax); | |
816 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rbx); | |
0 | 817 |
818 bind(zero_continue); | |
304 | 819 pop(rbx); |
820 pop(rax); | |
0 | 821 } |
822 | |
823 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
824 assert(ProfileInterpreter, "must be profiling interpreter"); | |
825 #ifdef ASSERT | |
826 Label verify_continue; | |
304 | 827 push(rax); |
828 push(rbx); | |
829 push(rcx); | |
830 push(rdx); | |
0 | 831 test_method_data_pointer(rcx, verify_continue); // If mdp is zero, continue |
832 get_method(rbx); | |
833 | |
834 // If the mdp is valid, it will point to a DataLayout header which is | |
835 // consistent with the bcp. The converse is highly probable also. | |
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836 load_unsigned_short(rdx, Address(rcx, in_bytes(DataLayout::bci_offset()))); |
304 | 837 addptr(rdx, Address(rbx, methodOopDesc::const_offset())); |
838 lea(rdx, Address(rdx, constMethodOopDesc::codes_offset())); | |
839 cmpptr(rdx, rsi); | |
0 | 840 jcc(Assembler::equal, verify_continue); |
841 // rbx,: method | |
842 // rsi: bcp | |
843 // rcx: mdp | |
844 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), rbx, rsi, rcx); | |
845 bind(verify_continue); | |
304 | 846 pop(rdx); |
847 pop(rcx); | |
848 pop(rbx); | |
849 pop(rax); | |
0 | 850 #endif // ASSERT |
851 } | |
852 | |
853 | |
854 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, int constant, Register value) { | |
304 | 855 // %%% this seems to be used to store counter data which is surely 32bits |
856 // however 64bit side stores 64 bits which seems wrong | |
0 | 857 assert(ProfileInterpreter, "must be profiling interpreter"); |
858 Address data(mdp_in, constant); | |
304 | 859 movptr(data, value); |
0 | 860 } |
861 | |
862 | |
863 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
864 int constant, | |
865 bool decrement) { | |
866 // Counter address | |
867 Address data(mdp_in, constant); | |
868 | |
869 increment_mdp_data_at(data, decrement); | |
870 } | |
871 | |
872 | |
873 void InterpreterMacroAssembler::increment_mdp_data_at(Address data, | |
874 bool decrement) { | |
875 | |
876 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
877 assert(ProfileInterpreter, "must be profiling interpreter"); | |
878 | |
304 | 879 // %%% 64bit treats this as 64 bit which seems unlikely |
0 | 880 if (decrement) { |
881 // Decrement the register. Set condition codes. | |
882 addl(data, -DataLayout::counter_increment); | |
883 // If the decrement causes the counter to overflow, stay negative | |
884 Label L; | |
885 jcc(Assembler::negative, L); | |
886 addl(data, DataLayout::counter_increment); | |
887 bind(L); | |
888 } else { | |
889 assert(DataLayout::counter_increment == 1, | |
890 "flow-free idiom only works with 1"); | |
891 // Increment the register. Set carry flag. | |
892 addl(data, DataLayout::counter_increment); | |
893 // If the increment causes the counter to overflow, pull back by 1. | |
894 sbbl(data, 0); | |
895 } | |
896 } | |
897 | |
898 | |
899 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
900 Register reg, | |
901 int constant, | |
902 bool decrement) { | |
903 Address data(mdp_in, reg, Address::times_1, constant); | |
904 | |
905 increment_mdp_data_at(data, decrement); | |
906 } | |
907 | |
908 | |
909 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, int flag_byte_constant) { | |
910 assert(ProfileInterpreter, "must be profiling interpreter"); | |
911 int header_offset = in_bytes(DataLayout::header_offset()); | |
912 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant); | |
913 // Set the flag | |
914 orl(Address(mdp_in, header_offset), header_bits); | |
915 } | |
916 | |
917 | |
918 | |
919 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in, | |
920 int offset, | |
921 Register value, | |
922 Register test_value_out, | |
923 Label& not_equal_continue) { | |
924 assert(ProfileInterpreter, "must be profiling interpreter"); | |
925 if (test_value_out == noreg) { | |
304 | 926 cmpptr(value, Address(mdp_in, offset)); |
0 | 927 } else { |
928 // Put the test value into a register, so caller can use it: | |
304 | 929 movptr(test_value_out, Address(mdp_in, offset)); |
930 cmpptr(test_value_out, value); | |
0 | 931 } |
932 jcc(Assembler::notEqual, not_equal_continue); | |
933 } | |
934 | |
935 | |
936 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, int offset_of_disp) { | |
937 assert(ProfileInterpreter, "must be profiling interpreter"); | |
938 Address disp_address(mdp_in, offset_of_disp); | |
304 | 939 addptr(mdp_in,disp_address); |
940 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 941 } |
942 | |
943 | |
944 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp) { | |
945 assert(ProfileInterpreter, "must be profiling interpreter"); | |
946 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp); | |
304 | 947 addptr(mdp_in, disp_address); |
948 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 949 } |
950 | |
951 | |
952 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, int constant) { | |
953 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 954 addptr(mdp_in, constant); |
955 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 956 } |
957 | |
958 | |
959 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) { | |
960 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 961 push(return_bci); // save/restore across call_VM |
0 | 962 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); |
304 | 963 pop(return_bci); |
0 | 964 } |
965 | |
966 | |
967 void InterpreterMacroAssembler::profile_taken_branch(Register mdp, Register bumped_count) { | |
968 if (ProfileInterpreter) { | |
969 Label profile_continue; | |
970 | |
971 // If no method data exists, go to profile_continue. | |
972 // Otherwise, assign to mdp | |
973 test_method_data_pointer(mdp, profile_continue); | |
974 | |
975 // We are taking a branch. Increment the taken count. | |
976 // We inline increment_mdp_data_at to return bumped_count in a register | |
977 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset())); | |
978 Address data(mdp, in_bytes(JumpData::taken_offset())); | |
304 | 979 |
980 // %%% 64bit treats these cells as 64 bit but they seem to be 32 bit | |
0 | 981 movl(bumped_count,data); |
982 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
983 addl(bumped_count, DataLayout::counter_increment); | |
984 sbbl(bumped_count, 0); | |
985 movl(data,bumped_count); // Store back out | |
986 | |
987 // The method data pointer needs to be updated to reflect the new target. | |
988 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset())); | |
989 bind (profile_continue); | |
990 } | |
991 } | |
992 | |
993 | |
994 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) { | |
995 if (ProfileInterpreter) { | |
996 Label profile_continue; | |
997 | |
998 // If no method data exists, go to profile_continue. | |
999 test_method_data_pointer(mdp, profile_continue); | |
1000 | |
1001 // We are taking a branch. Increment the not taken count. | |
1002 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset())); | |
1003 | |
1004 // The method data pointer needs to be updated to correspond to the next bytecode | |
1005 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size())); | |
1006 bind (profile_continue); | |
1007 } | |
1008 } | |
1009 | |
1010 | |
1011 void InterpreterMacroAssembler::profile_call(Register mdp) { | |
1012 if (ProfileInterpreter) { | |
1013 Label profile_continue; | |
1014 | |
1015 // If no method data exists, go to profile_continue. | |
1016 test_method_data_pointer(mdp, profile_continue); | |
1017 | |
1018 // We are making a call. Increment the count. | |
1019 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1020 | |
1021 // The method data pointer needs to be updated to reflect the new target. | |
1022 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size())); | |
1023 bind (profile_continue); | |
1024 } | |
1025 } | |
1026 | |
1027 | |
1028 void InterpreterMacroAssembler::profile_final_call(Register mdp) { | |
1029 if (ProfileInterpreter) { | |
1030 Label profile_continue; | |
1031 | |
1032 // If no method data exists, go to profile_continue. | |
1033 test_method_data_pointer(mdp, profile_continue); | |
1034 | |
1035 // We are making a call. Increment the count. | |
1036 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1037 | |
1038 // The method data pointer needs to be updated to reflect the new target. | |
1039 update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size())); | |
1040 bind (profile_continue); | |
1041 } | |
1042 } | |
1043 | |
1044 | |
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1045 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, Register mdp, |
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1046 Register reg2, |
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1047 bool receiver_can_be_null) { |
0 | 1048 if (ProfileInterpreter) { |
1049 Label profile_continue; | |
1050 | |
1051 // If no method data exists, go to profile_continue. | |
1052 test_method_data_pointer(mdp, profile_continue); | |
1053 | |
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1054 Label skip_receiver_profile; |
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1055 if (receiver_can_be_null) { |
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1056 Label not_null; |
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1057 testptr(receiver, receiver); |
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1058 jccb(Assembler::notZero, not_null); |
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1059 // We are making a call. Increment the count for null receiver. |
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1060 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1061 jmp(skip_receiver_profile); |
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1062 bind(not_null); |
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1063 } |
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1064 |
0 | 1065 // Record the receiver type. |
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1066 record_klass_in_profile(receiver, mdp, reg2, true); |
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1067 bind(skip_receiver_profile); |
0 | 1068 |
1069 // The method data pointer needs to be updated to reflect the new target. | |
1070 update_mdp_by_constant(mdp, | |
1071 in_bytes(VirtualCallData:: | |
1072 virtual_call_data_size())); | |
1073 bind(profile_continue); | |
1074 } | |
1075 } | |
1076 | |
1077 | |
1078 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
1079 Register receiver, Register mdp, | |
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1080 Register reg2, int start_row, |
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1081 Label& done, bool is_virtual_call) { |
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1082 if (TypeProfileWidth == 0) { |
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1083 if (is_virtual_call) { |
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1084 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1085 } |
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1086 return; |
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1087 } |
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1088 |
0 | 1089 int last_row = VirtualCallData::row_limit() - 1; |
1090 assert(start_row <= last_row, "must be work left to do"); | |
1091 // Test this row for both the receiver and for null. | |
1092 // Take any of three different outcomes: | |
1093 // 1. found receiver => increment count and goto done | |
1094 // 2. found null => keep looking for case 1, maybe allocate this cell | |
1095 // 3. found something else => keep looking for cases 1 and 2 | |
1096 // Case 3 is handled by a recursive call. | |
1097 for (int row = start_row; row <= last_row; row++) { | |
1098 Label next_test; | |
1099 bool test_for_null_also = (row == start_row); | |
1100 | |
1101 // See if the receiver is receiver[n]. | |
1102 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
1103 test_mdp_data_at(mdp, recvr_offset, receiver, | |
1104 (test_for_null_also ? reg2 : noreg), | |
1105 next_test); | |
1106 // (Reg2 now contains the receiver from the CallData.) | |
1107 | |
1108 // The receiver is receiver[n]. Increment count[n]. | |
1109 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
1110 increment_mdp_data_at(mdp, count_offset); | |
1111 jmp(done); | |
1112 bind(next_test); | |
1113 | |
1114 if (row == start_row) { | |
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1115 Label found_null; |
0 | 1116 // Failed the equality check on receiver[n]... Test for null. |
304 | 1117 testptr(reg2, reg2); |
0 | 1118 if (start_row == last_row) { |
1119 // The only thing left to do is handle the null case. | |
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1120 if (is_virtual_call) { |
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1121 jccb(Assembler::zero, found_null); |
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1122 // Receiver did not match any saved receiver and there is no empty row for it. |
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1123 // Increment total counter to indicate polymorphic case. |
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1124 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1125 jmp(done); |
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1126 bind(found_null); |
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1127 } else { |
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1128 jcc(Assembler::notZero, done); |
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1129 } |
0 | 1130 break; |
1131 } | |
1132 // Since null is rare, make it be the branch-taken case. | |
1133 jcc(Assembler::zero, found_null); | |
1134 | |
1135 // Put all the "Case 3" tests here. | |
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1136 record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done, is_virtual_call); |
0 | 1137 |
1138 // Found a null. Keep searching for a matching receiver, | |
1139 // but remember that this is an empty (unused) slot. | |
1140 bind(found_null); | |
1141 } | |
1142 } | |
1143 | |
1144 // In the fall-through case, we found no matching receiver, but we | |
1145 // observed the receiver[start_row] is NULL. | |
1146 | |
1147 // Fill in the receiver field and increment the count. | |
1148 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
1149 set_mdp_data_at(mdp, recvr_offset, receiver); | |
1150 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
304 | 1151 movptr(reg2, (int32_t)DataLayout::counter_increment); |
0 | 1152 set_mdp_data_at(mdp, count_offset, reg2); |
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1153 if (start_row > 0) { |
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1154 jmp(done); |
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1155 } |
0 | 1156 } |
1157 | |
1158 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver, | |
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1159 Register mdp, Register reg2, |
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1160 bool is_virtual_call) { |
0 | 1161 assert(ProfileInterpreter, "must be profiling"); |
1162 Label done; | |
1163 | |
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1164 record_klass_in_profile_helper(receiver, mdp, reg2, 0, done, is_virtual_call); |
0 | 1165 |
1166 bind (done); | |
1167 } | |
1168 | |
1169 void InterpreterMacroAssembler::profile_ret(Register return_bci, Register mdp) { | |
1170 if (ProfileInterpreter) { | |
1171 Label profile_continue; | |
1172 uint row; | |
1173 | |
1174 // If no method data exists, go to profile_continue. | |
1175 test_method_data_pointer(mdp, profile_continue); | |
1176 | |
1177 // Update the total ret count. | |
1178 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1179 | |
1180 for (row = 0; row < RetData::row_limit(); row++) { | |
1181 Label next_test; | |
1182 | |
1183 // See if return_bci is equal to bci[n]: | |
1184 test_mdp_data_at(mdp, in_bytes(RetData::bci_offset(row)), return_bci, | |
1185 noreg, next_test); | |
1186 | |
1187 // return_bci is equal to bci[n]. Increment the count. | |
1188 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row))); | |
1189 | |
1190 // The method data pointer needs to be updated to reflect the new target. | |
1191 update_mdp_by_offset(mdp, in_bytes(RetData::bci_displacement_offset(row))); | |
1192 jmp(profile_continue); | |
1193 bind(next_test); | |
1194 } | |
1195 | |
1196 update_mdp_for_ret(return_bci); | |
1197 | |
1198 bind (profile_continue); | |
1199 } | |
1200 } | |
1201 | |
1202 | |
1203 void InterpreterMacroAssembler::profile_null_seen(Register mdp) { | |
1204 if (ProfileInterpreter) { | |
1205 Label profile_continue; | |
1206 | |
1207 // If no method data exists, go to profile_continue. | |
1208 test_method_data_pointer(mdp, profile_continue); | |
1209 | |
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1210 set_mdp_flag_at(mdp, BitData::null_seen_byte_constant()); |
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1211 |
0 | 1212 // The method data pointer needs to be updated. |
1213 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1214 if (TypeProfileCasts) { | |
1215 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1216 } | |
1217 update_mdp_by_constant(mdp, mdp_delta); | |
1218 | |
1219 bind (profile_continue); | |
1220 } | |
1221 } | |
1222 | |
1223 | |
1224 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) { | |
1225 if (ProfileInterpreter && TypeProfileCasts) { | |
1226 Label profile_continue; | |
1227 | |
1228 // If no method data exists, go to profile_continue. | |
1229 test_method_data_pointer(mdp, profile_continue); | |
1230 | |
1231 int count_offset = in_bytes(CounterData::count_offset()); | |
1232 // Back up the address, since we have already bumped the mdp. | |
1233 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
1234 | |
1235 // *Decrement* the counter. We expect to see zero or small negatives. | |
1236 increment_mdp_data_at(mdp, count_offset, true); | |
1237 | |
1238 bind (profile_continue); | |
1239 } | |
1240 } | |
1241 | |
1242 | |
1243 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2) | |
1244 { | |
1245 if (ProfileInterpreter) { | |
1246 Label profile_continue; | |
1247 | |
1248 // If no method data exists, go to profile_continue. | |
1249 test_method_data_pointer(mdp, profile_continue); | |
1250 | |
1251 // The method data pointer needs to be updated. | |
1252 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1253 if (TypeProfileCasts) { | |
1254 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1255 | |
1256 // Record the object type. | |
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1257 record_klass_in_profile(klass, mdp, reg2, false); |
0 | 1258 assert(reg2 == rdi, "we know how to fix this blown reg"); |
1259 restore_locals(); // Restore EDI | |
1260 } | |
1261 update_mdp_by_constant(mdp, mdp_delta); | |
1262 | |
1263 bind(profile_continue); | |
1264 } | |
1265 } | |
1266 | |
1267 | |
1268 void InterpreterMacroAssembler::profile_switch_default(Register mdp) { | |
1269 if (ProfileInterpreter) { | |
1270 Label profile_continue; | |
1271 | |
1272 // If no method data exists, go to profile_continue. | |
1273 test_method_data_pointer(mdp, profile_continue); | |
1274 | |
1275 // Update the default case count | |
1276 increment_mdp_data_at(mdp, in_bytes(MultiBranchData::default_count_offset())); | |
1277 | |
1278 // The method data pointer needs to be updated. | |
1279 update_mdp_by_offset(mdp, in_bytes(MultiBranchData::default_displacement_offset())); | |
1280 | |
1281 bind (profile_continue); | |
1282 } | |
1283 } | |
1284 | |
1285 | |
1286 void InterpreterMacroAssembler::profile_switch_case(Register index, Register mdp, Register reg2) { | |
1287 if (ProfileInterpreter) { | |
1288 Label profile_continue; | |
1289 | |
1290 // If no method data exists, go to profile_continue. | |
1291 test_method_data_pointer(mdp, profile_continue); | |
1292 | |
1293 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes() | |
304 | 1294 movptr(reg2, (int32_t)in_bytes(MultiBranchData::per_case_size())); |
1295 // index is positive and so should have correct value if this code were | |
1296 // used on 64bits | |
1297 imulptr(index, reg2); | |
1298 addptr(index, in_bytes(MultiBranchData::case_array_offset())); | |
0 | 1299 |
1300 // Update the case count | |
1301 increment_mdp_data_at(mdp, index, in_bytes(MultiBranchData::relative_count_offset())); | |
1302 | |
1303 // The method data pointer needs to be updated. | |
1304 update_mdp_by_offset(mdp, index, in_bytes(MultiBranchData::relative_displacement_offset())); | |
1305 | |
1306 bind (profile_continue); | |
1307 } | |
1308 } | |
1309 | |
1310 #endif // !CC_INTERP | |
1311 | |
1312 | |
1313 | |
1314 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { | |
1315 if (state == atos) MacroAssembler::verify_oop(reg); | |
1316 } | |
1317 | |
1318 | |
1319 #ifndef CC_INTERP | |
1320 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
1321 if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth); | |
1322 } | |
1323 | |
1324 #endif /* CC_INTERP */ | |
1325 | |
1326 | |
1327 void InterpreterMacroAssembler::notify_method_entry() { | |
1328 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
1329 // track stack depth. If it is possible to enter interp_only_mode we add | |
1330 // the code to check if the event should be sent. | |
1331 if (JvmtiExport::can_post_interpreter_events()) { | |
1332 Label L; | |
1333 get_thread(rcx); | |
1334 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
1335 testl(rcx,rcx); | |
1336 jcc(Assembler::zero, L); | |
1337 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry)); | |
1338 bind(L); | |
1339 } | |
1340 | |
1341 { | |
1342 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
1343 get_thread(rcx); | |
1344 get_method(rbx); | |
1345 call_VM_leaf( | |
1346 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), rcx, rbx); | |
1347 } | |
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1349 // RedefineClasses() tracing support for obsolete method entry |
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1350 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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1351 get_thread(rcx); |
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1352 get_method(rbx); |
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1353 call_VM_leaf( |
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1354 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), |
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1355 rcx, rbx); |
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1356 } |
0 | 1357 } |
1358 | |
1359 | |
1360 void InterpreterMacroAssembler::notify_method_exit( | |
1361 TosState state, NotifyMethodExitMode mode) { | |
1362 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
1363 // track stack depth. If it is possible to enter interp_only_mode we add | |
1364 // the code to check if the event should be sent. | |
1365 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { | |
1366 Label L; | |
1367 // Note: frame::interpreter_frame_result has a dependency on how the | |
1368 // method result is saved across the call to post_method_exit. If this | |
1369 // is changed then the interpreter_frame_result implementation will | |
1370 // need to be updated too. | |
1371 | |
1372 // For c++ interpreter the result is always stored at a known location in the frame | |
1373 // template interpreter will leave it on the top of the stack. | |
1374 NOT_CC_INTERP(push(state);) | |
1375 get_thread(rcx); | |
1376 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
1377 testl(rcx,rcx); | |
1378 jcc(Assembler::zero, L); | |
1379 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit)); | |
1380 bind(L); | |
1381 NOT_CC_INTERP(pop(state);) | |
1382 } | |
1383 | |
1384 { | |
1385 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
304 | 1386 NOT_CC_INTERP(push(state)); |
0 | 1387 get_thread(rbx); |
1388 get_method(rcx); | |
1389 call_VM_leaf( | |
1390 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), | |
1391 rbx, rcx); | |
304 | 1392 NOT_CC_INTERP(pop(state)); |
0 | 1393 } |
1394 } |