Mercurial > hg > truffle
annotate src/cpu/sparc/vm/interp_masm_sparc.cpp @ 7198:6ab62ad83507
8003195: AbstractAssembler should not store code pointers but use the CodeSection directly
Reviewed-by: twisti, kvn
Contributed-by: Bharadwaj Yadavalli <bharadwaj.yadavalli@oracle.com>
author | twisti |
---|---|
date | Fri, 30 Nov 2012 11:44:05 -0800 |
parents | 69fb89ec6fa7 |
children | f34d701e952e b2dbd323c668 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. 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 * | |
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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. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "interp_masm_sparc.hpp" | |
27 #include "interpreter/interpreter.hpp" | |
28 #include "interpreter/interpreterRuntime.hpp" | |
29 #include "oops/arrayOop.hpp" | |
30 #include "oops/markOop.hpp" | |
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31 #include "oops/methodData.hpp" |
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32 #include "oops/method.hpp" |
1972 | 33 #include "prims/jvmtiExport.hpp" |
34 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
35 #include "prims/jvmtiThreadState.hpp" | |
36 #include "runtime/basicLock.hpp" | |
37 #include "runtime/biasedLocking.hpp" | |
38 #include "runtime/sharedRuntime.hpp" | |
39 #ifdef TARGET_OS_FAMILY_linux | |
40 # include "thread_linux.inline.hpp" | |
41 #endif | |
42 #ifdef TARGET_OS_FAMILY_solaris | |
43 # include "thread_solaris.inline.hpp" | |
44 #endif | |
0 | 45 |
46 #ifndef CC_INTERP | |
47 #ifndef FAST_DISPATCH | |
48 #define FAST_DISPATCH 1 | |
49 #endif | |
50 #undef FAST_DISPATCH | |
51 | |
52 // Implementation of InterpreterMacroAssembler | |
53 | |
54 // This file specializes the assember with interpreter-specific macros | |
55 | |
727 | 56 const Address InterpreterMacroAssembler::l_tmp(FP, (frame::interpreter_frame_l_scratch_fp_offset * wordSize) + STACK_BIAS); |
57 const Address InterpreterMacroAssembler::d_tmp(FP, (frame::interpreter_frame_d_scratch_fp_offset * wordSize) + STACK_BIAS); | |
0 | 58 |
59 #else // CC_INTERP | |
60 #ifndef STATE | |
61 #define STATE(field_name) Lstate, in_bytes(byte_offset_of(BytecodeInterpreter, field_name)) | |
62 #endif // STATE | |
63 | |
64 #endif // CC_INTERP | |
65 | |
66 void InterpreterMacroAssembler::compute_extra_locals_size_in_bytes(Register args_size, Register locals_size, Register delta) { | |
67 // Note: this algorithm is also used by C1's OSR entry sequence. | |
68 // Any changes should also be applied to CodeEmitter::emit_osr_entry(). | |
69 assert_different_registers(args_size, locals_size); | |
70 // max_locals*2 for TAGS. Assumes that args_size has already been adjusted. | |
71 subcc(locals_size, args_size, delta);// extra space for non-arguments locals in words | |
72 // Use br/mov combination because it works on both V8 and V9 and is | |
73 // faster. | |
74 Label skip_move; | |
75 br(Assembler::negative, true, Assembler::pt, skip_move); | |
76 delayed()->mov(G0, delta); | |
77 bind(skip_move); | |
78 round_to(delta, WordsPerLong); // make multiple of 2 (SP must be 2-word aligned) | |
79 sll(delta, LogBytesPerWord, delta); // extra space for locals in bytes | |
80 } | |
81 | |
82 #ifndef CC_INTERP | |
83 | |
84 // Dispatch code executed in the prolog of a bytecode which does not do it's | |
85 // own dispatch. The dispatch address is computed and placed in IdispatchAddress | |
86 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int bcp_incr) { | |
87 assert_not_delayed(); | |
88 #ifdef FAST_DISPATCH | |
89 // FAST_DISPATCH and ProfileInterpreter are mutually exclusive since | |
90 // they both use I2. | |
91 assert(!ProfileInterpreter, "FAST_DISPATCH and +ProfileInterpreter are mutually exclusive"); | |
92 ldub(Lbcp, bcp_incr, Lbyte_code); // load next bytecode | |
93 add(Lbyte_code, Interpreter::distance_from_dispatch_table(state), Lbyte_code); | |
94 // add offset to correct dispatch table | |
95 sll(Lbyte_code, LogBytesPerWord, Lbyte_code); // multiply by wordSize | |
96 ld_ptr(IdispatchTables, Lbyte_code, IdispatchAddress);// get entry addr | |
97 #else | |
727 | 98 ldub( Lbcp, bcp_incr, Lbyte_code); // load next bytecode |
0 | 99 // dispatch table to use |
727 | 100 AddressLiteral tbl(Interpreter::dispatch_table(state)); |
101 sll(Lbyte_code, LogBytesPerWord, Lbyte_code); // multiply by wordSize | |
102 set(tbl, G3_scratch); // compute addr of table | |
103 ld_ptr(G3_scratch, Lbyte_code, IdispatchAddress); // get entry addr | |
0 | 104 #endif |
105 } | |
106 | |
107 | |
108 // Dispatch code executed in the epilog of a bytecode which does not do it's | |
109 // own dispatch. The dispatch address in IdispatchAddress is used for the | |
110 // dispatch. | |
111 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int bcp_incr) { | |
112 assert_not_delayed(); | |
113 verify_FPU(1, state); | |
114 interp_verify_oop(Otos_i, state, __FILE__, __LINE__); | |
115 jmp( IdispatchAddress, 0 ); | |
116 if (bcp_incr != 0) delayed()->inc(Lbcp, bcp_incr); | |
117 else delayed()->nop(); | |
118 } | |
119 | |
120 | |
121 void InterpreterMacroAssembler::dispatch_next(TosState state, int bcp_incr) { | |
122 // %%%% consider branching to a single shared dispatch stub (for each bcp_incr) | |
123 assert_not_delayed(); | |
124 ldub( Lbcp, bcp_incr, Lbyte_code); // load next bytecode | |
125 dispatch_Lbyte_code(state, Interpreter::dispatch_table(state), bcp_incr); | |
126 } | |
127 | |
128 | |
129 void InterpreterMacroAssembler::dispatch_next_noverify_oop(TosState state, int bcp_incr) { | |
130 // %%%% consider branching to a single shared dispatch stub (for each bcp_incr) | |
131 assert_not_delayed(); | |
132 ldub( Lbcp, bcp_incr, Lbyte_code); // load next bytecode | |
133 dispatch_Lbyte_code(state, Interpreter::dispatch_table(state), bcp_incr, false); | |
134 } | |
135 | |
136 | |
137 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
138 // load current bytecode | |
139 assert_not_delayed(); | |
140 ldub( Lbcp, 0, Lbyte_code); // load next bytecode | |
141 dispatch_base(state, table); | |
142 } | |
143 | |
144 | |
145 void InterpreterMacroAssembler::call_VM_leaf_base( | |
146 Register java_thread, | |
147 address entry_point, | |
148 int number_of_arguments | |
149 ) { | |
150 if (!java_thread->is_valid()) | |
151 java_thread = L7_thread_cache; | |
152 // super call | |
153 MacroAssembler::call_VM_leaf_base(java_thread, entry_point, number_of_arguments); | |
154 } | |
155 | |
156 | |
157 void InterpreterMacroAssembler::call_VM_base( | |
158 Register oop_result, | |
159 Register java_thread, | |
160 Register last_java_sp, | |
161 address entry_point, | |
162 int number_of_arguments, | |
163 bool check_exception | |
164 ) { | |
165 if (!java_thread->is_valid()) | |
166 java_thread = L7_thread_cache; | |
167 // See class ThreadInVMfromInterpreter, which assumes that the interpreter | |
168 // takes responsibility for setting its own thread-state on call-out. | |
169 // However, ThreadInVMfromInterpreter resets the state to "in_Java". | |
170 | |
171 //save_bcp(); // save bcp | |
172 MacroAssembler::call_VM_base(oop_result, java_thread, last_java_sp, entry_point, number_of_arguments, check_exception); | |
173 //restore_bcp(); // restore bcp | |
174 //restore_locals(); // restore locals pointer | |
175 } | |
176 | |
177 | |
178 void InterpreterMacroAssembler::check_and_handle_popframe(Register scratch_reg) { | |
179 if (JvmtiExport::can_pop_frame()) { | |
180 Label L; | |
181 | |
182 // Check the "pending popframe condition" flag in the current thread | |
727 | 183 ld(G2_thread, JavaThread::popframe_condition_offset(), scratch_reg); |
0 | 184 |
185 // Initiate popframe handling only if it is not already being processed. If the flag | |
186 // has the popframe_processing bit set, it means that this code is called *during* popframe | |
187 // handling - we don't want to reenter. | |
188 btst(JavaThread::popframe_pending_bit, scratch_reg); | |
189 br(zero, false, pt, L); | |
190 delayed()->nop(); | |
191 btst(JavaThread::popframe_processing_bit, scratch_reg); | |
192 br(notZero, false, pt, L); | |
193 delayed()->nop(); | |
194 | |
195 // Call Interpreter::remove_activation_preserving_args_entry() to get the | |
196 // address of the same-named entrypoint in the generated interpreter code. | |
197 call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry)); | |
198 | |
199 // Jump to Interpreter::_remove_activation_preserving_args_entry | |
200 jmpl(O0, G0, G0); | |
201 delayed()->nop(); | |
202 bind(L); | |
203 } | |
204 } | |
205 | |
206 | |
207 void InterpreterMacroAssembler::load_earlyret_value(TosState state) { | |
208 Register thr_state = G4_scratch; | |
727 | 209 ld_ptr(G2_thread, JavaThread::jvmti_thread_state_offset(), thr_state); |
210 const Address tos_addr(thr_state, JvmtiThreadState::earlyret_tos_offset()); | |
211 const Address oop_addr(thr_state, JvmtiThreadState::earlyret_oop_offset()); | |
212 const Address val_addr(thr_state, JvmtiThreadState::earlyret_value_offset()); | |
0 | 213 switch (state) { |
214 case ltos: ld_long(val_addr, Otos_l); break; | |
215 case atos: ld_ptr(oop_addr, Otos_l); | |
216 st_ptr(G0, oop_addr); break; | |
217 case btos: // fall through | |
218 case ctos: // fall through | |
219 case stos: // fall through | |
220 case itos: ld(val_addr, Otos_l1); break; | |
221 case ftos: ldf(FloatRegisterImpl::S, val_addr, Ftos_f); break; | |
222 case dtos: ldf(FloatRegisterImpl::D, val_addr, Ftos_d); break; | |
223 case vtos: /* nothing to do */ break; | |
224 default : ShouldNotReachHere(); | |
225 } | |
226 // Clean up tos value in the jvmti thread state | |
227 or3(G0, ilgl, G3_scratch); | |
228 stw(G3_scratch, tos_addr); | |
229 st_long(G0, val_addr); | |
230 interp_verify_oop(Otos_i, state, __FILE__, __LINE__); | |
231 } | |
232 | |
233 | |
234 void InterpreterMacroAssembler::check_and_handle_earlyret(Register scratch_reg) { | |
235 if (JvmtiExport::can_force_early_return()) { | |
236 Label L; | |
237 Register thr_state = G3_scratch; | |
727 | 238 ld_ptr(G2_thread, JavaThread::jvmti_thread_state_offset(), thr_state); |
3839 | 239 br_null_short(thr_state, pt, L); // if (thread->jvmti_thread_state() == NULL) exit; |
0 | 240 |
241 // Initiate earlyret handling only if it is not already being processed. | |
242 // If the flag has the earlyret_processing bit set, it means that this code | |
243 // is called *during* earlyret handling - we don't want to reenter. | |
727 | 244 ld(thr_state, JvmtiThreadState::earlyret_state_offset(), G4_scratch); |
3839 | 245 cmp_and_br_short(G4_scratch, JvmtiThreadState::earlyret_pending, Assembler::notEqual, pt, L); |
0 | 246 |
247 // Call Interpreter::remove_activation_early_entry() to get the address of the | |
248 // same-named entrypoint in the generated interpreter code | |
727 | 249 ld(thr_state, JvmtiThreadState::earlyret_tos_offset(), Otos_l1); |
0 | 250 call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), Otos_l1); |
251 | |
252 // Jump to Interpreter::_remove_activation_early_entry | |
253 jmpl(O0, G0, G0); | |
254 delayed()->nop(); | |
255 bind(L); | |
256 } | |
257 } | |
258 | |
259 | |
1295 | 260 void InterpreterMacroAssembler::super_call_VM_leaf(Register thread_cache, address entry_point, Register arg_1, Register arg_2) { |
0 | 261 mov(arg_1, O0); |
1295 | 262 mov(arg_2, O1); |
263 MacroAssembler::call_VM_leaf_base(thread_cache, entry_point, 2); | |
0 | 264 } |
265 #endif /* CC_INTERP */ | |
266 | |
267 | |
268 #ifndef CC_INTERP | |
269 | |
270 void InterpreterMacroAssembler::dispatch_base(TosState state, address* table) { | |
271 assert_not_delayed(); | |
272 dispatch_Lbyte_code(state, table); | |
273 } | |
274 | |
275 | |
276 void InterpreterMacroAssembler::dispatch_normal(TosState state) { | |
277 dispatch_base(state, Interpreter::normal_table(state)); | |
278 } | |
279 | |
280 | |
281 void InterpreterMacroAssembler::dispatch_only(TosState state) { | |
282 dispatch_base(state, Interpreter::dispatch_table(state)); | |
283 } | |
284 | |
285 | |
286 // common code to dispatch and dispatch_only | |
287 // dispatch value in Lbyte_code and increment Lbcp | |
288 | |
289 void InterpreterMacroAssembler::dispatch_Lbyte_code(TosState state, address* table, int bcp_incr, bool verify) { | |
290 verify_FPU(1, state); | |
291 // %%%%% maybe implement +VerifyActivationFrameSize here | |
292 //verify_thread(); //too slow; we will just verify on method entry & exit | |
293 if (verify) interp_verify_oop(Otos_i, state, __FILE__, __LINE__); | |
294 #ifdef FAST_DISPATCH | |
295 if (table == Interpreter::dispatch_table(state)) { | |
296 // use IdispatchTables | |
297 add(Lbyte_code, Interpreter::distance_from_dispatch_table(state), Lbyte_code); | |
298 // add offset to correct dispatch table | |
299 sll(Lbyte_code, LogBytesPerWord, Lbyte_code); // multiply by wordSize | |
300 ld_ptr(IdispatchTables, Lbyte_code, G3_scratch); // get entry addr | |
301 } else { | |
302 #endif | |
303 // dispatch table to use | |
727 | 304 AddressLiteral tbl(table); |
0 | 305 sll(Lbyte_code, LogBytesPerWord, Lbyte_code); // multiply by wordSize |
727 | 306 set(tbl, G3_scratch); // compute addr of table |
0 | 307 ld_ptr(G3_scratch, Lbyte_code, G3_scratch); // get entry addr |
308 #ifdef FAST_DISPATCH | |
309 } | |
310 #endif | |
311 jmp( G3_scratch, 0 ); | |
312 if (bcp_incr != 0) delayed()->inc(Lbcp, bcp_incr); | |
313 else delayed()->nop(); | |
314 } | |
315 | |
316 | |
317 // Helpers for expression stack | |
318 | |
319 // Longs and doubles are Category 2 computational types in the | |
320 // JVM specification (section 3.11.1) and take 2 expression stack or | |
321 // local slots. | |
322 // Aligning them on 32 bit with tagged stacks is hard because the code generated | |
323 // for the dup* bytecodes depends on what types are already on the stack. | |
324 // If the types are split into the two stack/local slots, that is much easier | |
325 // (and we can use 0 for non-reference tags). | |
326 | |
327 // Known good alignment in _LP64 but unknown otherwise | |
328 void InterpreterMacroAssembler::load_unaligned_double(Register r1, int offset, FloatRegister d) { | |
329 assert_not_delayed(); | |
330 | |
331 #ifdef _LP64 | |
332 ldf(FloatRegisterImpl::D, r1, offset, d); | |
333 #else | |
334 ldf(FloatRegisterImpl::S, r1, offset, d); | |
1506 | 335 ldf(FloatRegisterImpl::S, r1, offset + Interpreter::stackElementSize, d->successor()); |
0 | 336 #endif |
337 } | |
338 | |
339 // Known good alignment in _LP64 but unknown otherwise | |
340 void InterpreterMacroAssembler::store_unaligned_double(FloatRegister d, Register r1, int offset) { | |
341 assert_not_delayed(); | |
342 | |
343 #ifdef _LP64 | |
344 stf(FloatRegisterImpl::D, d, r1, offset); | |
345 // store something more useful here | |
1506 | 346 debug_only(stx(G0, r1, offset+Interpreter::stackElementSize);) |
0 | 347 #else |
348 stf(FloatRegisterImpl::S, d, r1, offset); | |
1506 | 349 stf(FloatRegisterImpl::S, d->successor(), r1, offset + Interpreter::stackElementSize); |
0 | 350 #endif |
351 } | |
352 | |
353 | |
354 // Known good alignment in _LP64 but unknown otherwise | |
355 void InterpreterMacroAssembler::load_unaligned_long(Register r1, int offset, Register rd) { | |
356 assert_not_delayed(); | |
357 #ifdef _LP64 | |
358 ldx(r1, offset, rd); | |
359 #else | |
360 ld(r1, offset, rd); | |
1506 | 361 ld(r1, offset + Interpreter::stackElementSize, rd->successor()); |
0 | 362 #endif |
363 } | |
364 | |
365 // Known good alignment in _LP64 but unknown otherwise | |
366 void InterpreterMacroAssembler::store_unaligned_long(Register l, Register r1, int offset) { | |
367 assert_not_delayed(); | |
368 | |
369 #ifdef _LP64 | |
370 stx(l, r1, offset); | |
371 // store something more useful here | |
1506 | 372 debug_only(stx(G0, r1, offset+Interpreter::stackElementSize);) |
0 | 373 #else |
374 st(l, r1, offset); | |
1506 | 375 st(l->successor(), r1, offset + Interpreter::stackElementSize); |
0 | 376 #endif |
377 } | |
378 | |
379 void InterpreterMacroAssembler::pop_i(Register r) { | |
380 assert_not_delayed(); | |
381 ld(Lesp, Interpreter::expr_offset_in_bytes(0), r); | |
1506 | 382 inc(Lesp, Interpreter::stackElementSize); |
0 | 383 debug_only(verify_esp(Lesp)); |
384 } | |
385 | |
386 void InterpreterMacroAssembler::pop_ptr(Register r, Register scratch) { | |
387 assert_not_delayed(); | |
388 ld_ptr(Lesp, Interpreter::expr_offset_in_bytes(0), r); | |
1506 | 389 inc(Lesp, Interpreter::stackElementSize); |
0 | 390 debug_only(verify_esp(Lesp)); |
391 } | |
392 | |
393 void InterpreterMacroAssembler::pop_l(Register r) { | |
394 assert_not_delayed(); | |
395 load_unaligned_long(Lesp, Interpreter::expr_offset_in_bytes(0), r); | |
1506 | 396 inc(Lesp, 2*Interpreter::stackElementSize); |
0 | 397 debug_only(verify_esp(Lesp)); |
398 } | |
399 | |
400 | |
401 void InterpreterMacroAssembler::pop_f(FloatRegister f, Register scratch) { | |
402 assert_not_delayed(); | |
403 ldf(FloatRegisterImpl::S, Lesp, Interpreter::expr_offset_in_bytes(0), f); | |
1506 | 404 inc(Lesp, Interpreter::stackElementSize); |
0 | 405 debug_only(verify_esp(Lesp)); |
406 } | |
407 | |
408 | |
409 void InterpreterMacroAssembler::pop_d(FloatRegister f, Register scratch) { | |
410 assert_not_delayed(); | |
411 load_unaligned_double(Lesp, Interpreter::expr_offset_in_bytes(0), f); | |
1506 | 412 inc(Lesp, 2*Interpreter::stackElementSize); |
0 | 413 debug_only(verify_esp(Lesp)); |
414 } | |
415 | |
416 | |
417 void InterpreterMacroAssembler::push_i(Register r) { | |
418 assert_not_delayed(); | |
419 debug_only(verify_esp(Lesp)); | |
1506 | 420 st(r, Lesp, 0); |
421 dec(Lesp, Interpreter::stackElementSize); | |
0 | 422 } |
423 | |
424 void InterpreterMacroAssembler::push_ptr(Register r) { | |
425 assert_not_delayed(); | |
1506 | 426 st_ptr(r, Lesp, 0); |
427 dec(Lesp, Interpreter::stackElementSize); | |
0 | 428 } |
429 | |
430 // remember: our convention for longs in SPARC is: | |
431 // O0 (Otos_l1) has high-order part in first word, | |
432 // O1 (Otos_l2) has low-order part in second word | |
433 | |
434 void InterpreterMacroAssembler::push_l(Register r) { | |
435 assert_not_delayed(); | |
436 debug_only(verify_esp(Lesp)); | |
1506 | 437 // Longs are stored in memory-correct order, even if unaligned. |
438 int offset = -Interpreter::stackElementSize; | |
0 | 439 store_unaligned_long(r, Lesp, offset); |
1506 | 440 dec(Lesp, 2 * Interpreter::stackElementSize); |
0 | 441 } |
442 | |
443 | |
444 void InterpreterMacroAssembler::push_f(FloatRegister f) { | |
445 assert_not_delayed(); | |
446 debug_only(verify_esp(Lesp)); | |
1506 | 447 stf(FloatRegisterImpl::S, f, Lesp, 0); |
448 dec(Lesp, Interpreter::stackElementSize); | |
0 | 449 } |
450 | |
451 | |
452 void InterpreterMacroAssembler::push_d(FloatRegister d) { | |
453 assert_not_delayed(); | |
454 debug_only(verify_esp(Lesp)); | |
1506 | 455 // Longs are stored in memory-correct order, even if unaligned. |
456 int offset = -Interpreter::stackElementSize; | |
0 | 457 store_unaligned_double(d, Lesp, offset); |
1506 | 458 dec(Lesp, 2 * Interpreter::stackElementSize); |
0 | 459 } |
460 | |
461 | |
462 void InterpreterMacroAssembler::push(TosState state) { | |
463 interp_verify_oop(Otos_i, state, __FILE__, __LINE__); | |
464 switch (state) { | |
465 case atos: push_ptr(); break; | |
466 case btos: push_i(); break; | |
467 case ctos: | |
468 case stos: push_i(); break; | |
469 case itos: push_i(); break; | |
470 case ltos: push_l(); break; | |
471 case ftos: push_f(); break; | |
472 case dtos: push_d(); break; | |
473 case vtos: /* nothing to do */ break; | |
474 default : ShouldNotReachHere(); | |
475 } | |
476 } | |
477 | |
478 | |
479 void InterpreterMacroAssembler::pop(TosState state) { | |
480 switch (state) { | |
481 case atos: pop_ptr(); break; | |
482 case btos: pop_i(); break; | |
483 case ctos: | |
484 case stos: pop_i(); break; | |
485 case itos: pop_i(); break; | |
486 case ltos: pop_l(); break; | |
487 case ftos: pop_f(); break; | |
488 case dtos: pop_d(); break; | |
489 case vtos: /* nothing to do */ break; | |
490 default : ShouldNotReachHere(); | |
491 } | |
492 interp_verify_oop(Otos_i, state, __FILE__, __LINE__); | |
493 } | |
494 | |
495 | |
1506 | 496 // Helpers for swap and dup |
497 void InterpreterMacroAssembler::load_ptr(int n, Register val) { | |
0 | 498 ld_ptr(Lesp, Interpreter::expr_offset_in_bytes(n), val); |
499 } | |
1506 | 500 void InterpreterMacroAssembler::store_ptr(int n, Register val) { |
0 | 501 st_ptr(val, Lesp, Interpreter::expr_offset_in_bytes(n)); |
502 } | |
503 | |
504 | |
505 void InterpreterMacroAssembler::load_receiver(Register param_count, | |
506 Register recv) { | |
1506 | 507 sll(param_count, Interpreter::logStackElementSize, param_count); |
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508 ld_ptr(Lesp, param_count, recv); // gets receiver oop |
0 | 509 } |
510 | |
511 void InterpreterMacroAssembler::empty_expression_stack() { | |
512 // Reset Lesp. | |
513 sub( Lmonitors, wordSize, Lesp ); | |
514 | |
515 // Reset SP by subtracting more space from Lesp. | |
516 Label done; | |
727 | 517 assert(G4_scratch != Gframe_size, "Only you can prevent register aliasing!"); |
0 | 518 |
519 // A native does not need to do this, since its callee does not change SP. | |
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520 ld(Lmethod, Method::access_flags_offset(), Gframe_size); // Load access flags. |
0 | 521 btst(JVM_ACC_NATIVE, Gframe_size); |
522 br(Assembler::notZero, false, Assembler::pt, done); | |
523 delayed()->nop(); | |
524 | |
525 // Compute max expression stack+register save area | |
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526 lduh(Lmethod, in_bytes(Method::max_stack_offset()), Gframe_size); // Load max stack. |
0 | 527 add( Gframe_size, frame::memory_parameter_word_sp_offset, Gframe_size ); |
528 | |
529 // | |
530 // now set up a stack frame with the size computed above | |
531 // | |
532 //round_to( Gframe_size, WordsPerLong ); // -- moved down to the "and" below | |
533 sll( Gframe_size, LogBytesPerWord, Gframe_size ); | |
534 sub( Lesp, Gframe_size, Gframe_size ); | |
535 and3( Gframe_size, -(2 * wordSize), Gframe_size ); // align SP (downwards) to an 8/16-byte boundary | |
536 debug_only(verify_sp(Gframe_size, G4_scratch)); | |
537 #ifdef _LP64 | |
538 sub(Gframe_size, STACK_BIAS, Gframe_size ); | |
539 #endif | |
540 mov(Gframe_size, SP); | |
541 | |
542 bind(done); | |
543 } | |
544 | |
545 | |
546 #ifdef ASSERT | |
547 void InterpreterMacroAssembler::verify_sp(Register Rsp, Register Rtemp) { | |
548 Label Bad, OK; | |
549 | |
550 // Saved SP must be aligned. | |
551 #ifdef _LP64 | |
552 btst(2*BytesPerWord-1, Rsp); | |
553 #else | |
554 btst(LongAlignmentMask, Rsp); | |
555 #endif | |
556 br(Assembler::notZero, false, Assembler::pn, Bad); | |
557 delayed()->nop(); | |
558 | |
559 // Saved SP, plus register window size, must not be above FP. | |
560 add(Rsp, frame::register_save_words * wordSize, Rtemp); | |
561 #ifdef _LP64 | |
562 sub(Rtemp, STACK_BIAS, Rtemp); // Bias Rtemp before cmp to FP | |
563 #endif | |
3839 | 564 cmp_and_brx_short(Rtemp, FP, Assembler::greaterUnsigned, Assembler::pn, Bad); |
0 | 565 |
566 // Saved SP must not be ridiculously below current SP. | |
567 size_t maxstack = MAX2(JavaThread::stack_size_at_create(), (size_t) 4*K*K); | |
568 set(maxstack, Rtemp); | |
569 sub(SP, Rtemp, Rtemp); | |
570 #ifdef _LP64 | |
571 add(Rtemp, STACK_BIAS, Rtemp); // Unbias Rtemp before cmp to Rsp | |
572 #endif | |
3839 | 573 cmp_and_brx_short(Rsp, Rtemp, Assembler::lessUnsigned, Assembler::pn, Bad); |
574 | |
575 ba_short(OK); | |
0 | 576 |
577 bind(Bad); | |
578 stop("on return to interpreted call, restored SP is corrupted"); | |
579 | |
580 bind(OK); | |
581 } | |
582 | |
583 | |
584 void InterpreterMacroAssembler::verify_esp(Register Resp) { | |
585 // about to read or write Resp[0] | |
586 // make sure it is not in the monitors or the register save area | |
587 Label OK1, OK2; | |
588 | |
589 cmp(Resp, Lmonitors); | |
590 brx(Assembler::lessUnsigned, true, Assembler::pt, OK1); | |
591 delayed()->sub(Resp, frame::memory_parameter_word_sp_offset * wordSize, Resp); | |
592 stop("too many pops: Lesp points into monitor area"); | |
593 bind(OK1); | |
594 #ifdef _LP64 | |
595 sub(Resp, STACK_BIAS, Resp); | |
596 #endif | |
597 cmp(Resp, SP); | |
598 brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, OK2); | |
599 delayed()->add(Resp, STACK_BIAS + frame::memory_parameter_word_sp_offset * wordSize, Resp); | |
600 stop("too many pushes: Lesp points into register window"); | |
601 bind(OK2); | |
602 } | |
603 #endif // ASSERT | |
604 | |
605 // Load compiled (i2c) or interpreter entry when calling from interpreted and | |
606 // do the call. Centralized so that all interpreter calls will do the same actions. | |
607 // If jvmti single stepping is on for a thread we must not call compiled code. | |
608 void InterpreterMacroAssembler::call_from_interpreter(Register target, Register scratch, Register Rret) { | |
609 | |
610 // Assume we want to go compiled if available | |
611 | |
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612 ld_ptr(G5_method, in_bytes(Method::from_interpreted_offset()), target); |
0 | 613 |
614 if (JvmtiExport::can_post_interpreter_events()) { | |
615 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
616 // compiled code in threads for which the event is enabled. Check here for | |
617 // interp_only_mode if these events CAN be enabled. | |
618 verify_thread(); | |
619 Label skip_compiled_code; | |
620 | |
727 | 621 const Address interp_only(G2_thread, JavaThread::interp_only_mode_offset()); |
0 | 622 ld(interp_only, scratch); |
3839 | 623 cmp_zero_and_br(Assembler::notZero, scratch, skip_compiled_code, true, Assembler::pn); |
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624 delayed()->ld_ptr(G5_method, in_bytes(Method::interpreter_entry_offset()), target); |
0 | 625 bind(skip_compiled_code); |
626 } | |
627 | |
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628 // the i2c_adapters need Method* in G5_method (right? %%%) |
0 | 629 // do the call |
630 #ifdef ASSERT | |
631 { | |
632 Label ok; | |
3839 | 633 br_notnull_short(target, Assembler::pt, ok); |
0 | 634 stop("null entry point"); |
635 bind(ok); | |
636 } | |
637 #endif // ASSERT | |
638 | |
639 // Adjust Rret first so Llast_SP can be same as Rret | |
640 add(Rret, -frame::pc_return_offset, O7); | |
641 add(Lesp, BytesPerWord, Gargs); // setup parameter pointer | |
642 // Record SP so we can remove any stack space allocated by adapter transition | |
643 jmp(target, 0); | |
644 delayed()->mov(SP, Llast_SP); | |
645 } | |
646 | |
647 void InterpreterMacroAssembler::if_cmp(Condition cc, bool ptr_compare) { | |
648 assert_not_delayed(); | |
649 | |
650 Label not_taken; | |
651 if (ptr_compare) brx(cc, false, Assembler::pn, not_taken); | |
652 else br (cc, false, Assembler::pn, not_taken); | |
653 delayed()->nop(); | |
654 | |
655 TemplateTable::branch(false,false); | |
656 | |
657 bind(not_taken); | |
658 | |
659 profile_not_taken_branch(G3_scratch); | |
660 } | |
661 | |
662 | |
663 void InterpreterMacroAssembler::get_2_byte_integer_at_bcp( | |
664 int bcp_offset, | |
665 Register Rtmp, | |
666 Register Rdst, | |
667 signedOrNot is_signed, | |
668 setCCOrNot should_set_CC ) { | |
669 assert(Rtmp != Rdst, "need separate temp register"); | |
670 assert_not_delayed(); | |
671 switch (is_signed) { | |
672 default: ShouldNotReachHere(); | |
673 | |
674 case Signed: ldsb( Lbcp, bcp_offset, Rdst ); break; // high byte | |
675 case Unsigned: ldub( Lbcp, bcp_offset, Rdst ); break; // high byte | |
676 } | |
677 ldub( Lbcp, bcp_offset + 1, Rtmp ); // low byte | |
678 sll( Rdst, BitsPerByte, Rdst); | |
679 switch (should_set_CC ) { | |
680 default: ShouldNotReachHere(); | |
681 | |
682 case set_CC: orcc( Rdst, Rtmp, Rdst ); break; | |
683 case dont_set_CC: or3( Rdst, Rtmp, Rdst ); break; | |
684 } | |
685 } | |
686 | |
687 | |
688 void InterpreterMacroAssembler::get_4_byte_integer_at_bcp( | |
689 int bcp_offset, | |
690 Register Rtmp, | |
691 Register Rdst, | |
692 setCCOrNot should_set_CC ) { | |
693 assert(Rtmp != Rdst, "need separate temp register"); | |
694 assert_not_delayed(); | |
695 add( Lbcp, bcp_offset, Rtmp); | |
696 andcc( Rtmp, 3, G0); | |
697 Label aligned; | |
698 switch (should_set_CC ) { | |
699 default: ShouldNotReachHere(); | |
700 | |
701 case set_CC: break; | |
702 case dont_set_CC: break; | |
703 } | |
704 | |
705 br(Assembler::zero, true, Assembler::pn, aligned); | |
706 #ifdef _LP64 | |
707 delayed()->ldsw(Rtmp, 0, Rdst); | |
708 #else | |
709 delayed()->ld(Rtmp, 0, Rdst); | |
710 #endif | |
711 | |
712 ldub(Lbcp, bcp_offset + 3, Rdst); | |
713 ldub(Lbcp, bcp_offset + 2, Rtmp); sll(Rtmp, 8, Rtmp); or3(Rtmp, Rdst, Rdst); | |
714 ldub(Lbcp, bcp_offset + 1, Rtmp); sll(Rtmp, 16, Rtmp); or3(Rtmp, Rdst, Rdst); | |
715 #ifdef _LP64 | |
716 ldsb(Lbcp, bcp_offset + 0, Rtmp); sll(Rtmp, 24, Rtmp); | |
717 #else | |
718 // Unsigned load is faster than signed on some implementations | |
719 ldub(Lbcp, bcp_offset + 0, Rtmp); sll(Rtmp, 24, Rtmp); | |
720 #endif | |
721 or3(Rtmp, Rdst, Rdst ); | |
722 | |
723 bind(aligned); | |
724 if (should_set_CC == set_CC) tst(Rdst); | |
725 } | |
726 | |
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727 void InterpreterMacroAssembler::get_cache_index_at_bcp(Register temp, Register index, |
1565 | 728 int bcp_offset, size_t index_size) { |
1503 | 729 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); |
1565 | 730 if (index_size == sizeof(u2)) { |
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731 get_2_byte_integer_at_bcp(bcp_offset, temp, index, Unsigned); |
1565 | 732 } else if (index_size == sizeof(u4)) { |
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733 assert(EnableInvokeDynamic, "giant index used only for JSR 292"); |
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734 get_4_byte_integer_at_bcp(bcp_offset, temp, index); |
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735 assert(ConstantPool::decode_invokedynamic_index(~123) == 123, "else change next line"); |
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736 xor3(index, -1, index); // convert to plain index |
1565 | 737 } else if (index_size == sizeof(u1)) { |
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738 ldub(Lbcp, bcp_offset, index); |
1565 | 739 } else { |
740 ShouldNotReachHere(); | |
1503 | 741 } |
742 } | |
743 | |
744 | |
745 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register tmp, | |
1565 | 746 int bcp_offset, size_t index_size) { |
0 | 747 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); |
748 assert_different_registers(cache, tmp); | |
749 assert_not_delayed(); | |
1565 | 750 get_cache_index_at_bcp(cache, tmp, bcp_offset, index_size); |
1503 | 751 // convert from field index to ConstantPoolCacheEntry index and from |
752 // word index to byte offset | |
0 | 753 sll(tmp, exact_log2(in_words(ConstantPoolCacheEntry::size()) * BytesPerWord), tmp); |
754 add(LcpoolCache, tmp, cache); | |
755 } | |
756 | |
757 | |
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758 void InterpreterMacroAssembler::get_cache_and_index_and_bytecode_at_bcp(Register cache, |
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759 Register temp, |
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760 Register bytecode, |
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761 int byte_no, |
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762 int bcp_offset, |
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763 size_t index_size) { |
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764 get_cache_and_index_at_bcp(cache, temp, bcp_offset, index_size); |
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765 ld_ptr(cache, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::indices_offset(), bytecode); |
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766 const int shift_count = (1 + byte_no) * BitsPerByte; |
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767 assert((byte_no == TemplateTable::f1_byte && shift_count == ConstantPoolCacheEntry::bytecode_1_shift) || |
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768 (byte_no == TemplateTable::f2_byte && shift_count == ConstantPoolCacheEntry::bytecode_2_shift), |
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769 "correct shift count"); |
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770 srl(bytecode, shift_count, bytecode); |
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771 assert(ConstantPoolCacheEntry::bytecode_1_mask == ConstantPoolCacheEntry::bytecode_2_mask, "common mask"); |
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772 and3(bytecode, ConstantPoolCacheEntry::bytecode_1_mask, bytecode); |
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773 } |
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774 |
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775 |
1503 | 776 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp, |
1565 | 777 int bcp_offset, size_t index_size) { |
0 | 778 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); |
779 assert_different_registers(cache, tmp); | |
780 assert_not_delayed(); | |
1565 | 781 if (index_size == sizeof(u2)) { |
782 get_2_byte_integer_at_bcp(bcp_offset, cache, tmp, Unsigned); | |
783 } else { | |
784 ShouldNotReachHere(); // other sizes not supported here | |
785 } | |
0 | 786 // convert from field index to ConstantPoolCacheEntry index |
787 // and from word index to byte offset | |
788 sll(tmp, exact_log2(in_words(ConstantPoolCacheEntry::size()) * BytesPerWord), tmp); | |
789 // skip past the header | |
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790 add(tmp, in_bytes(ConstantPoolCache::base_offset()), tmp); |
0 | 791 // construct pointer to cache entry |
792 add(LcpoolCache, tmp, cache); | |
793 } | |
794 | |
795 | |
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796 // Load object from cpool->resolved_references(index) |
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797 void InterpreterMacroAssembler::load_resolved_reference_at_index( |
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798 Register result, Register index) { |
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799 assert_different_registers(result, index); |
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800 assert_not_delayed(); |
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801 // convert from field index to resolved_references() index and from |
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802 // word index to byte offset. Since this is a java object, it can be compressed |
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803 Register tmp = index; // reuse |
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804 sll(index, LogBytesPerHeapOop, tmp); |
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805 get_constant_pool(result); |
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806 // load pointer for resolved_references[] objArray |
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807 ld_ptr(result, ConstantPool::resolved_references_offset_in_bytes(), result); |
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808 // JNIHandles::resolve(result) |
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809 ld_ptr(result, 0, result); |
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810 // Add in the index |
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811 add(result, tmp, result); |
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812 load_heap_oop(result, arrayOopDesc::base_offset_in_bytes(T_OBJECT), result); |
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813 } |
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814 |
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815 |
0 | 816 // Generate a subtype check: branch to ok_is_subtype if sub_klass is |
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817 // a subtype of super_klass. Blows registers Rsuper_klass, Rsub_klass, tmp1, tmp2. |
0 | 818 void InterpreterMacroAssembler::gen_subtype_check(Register Rsub_klass, |
819 Register Rsuper_klass, | |
820 Register Rtmp1, | |
821 Register Rtmp2, | |
822 Register Rtmp3, | |
823 Label &ok_is_subtype ) { | |
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824 Label not_subtype; |
0 | 825 |
826 // Profile the not-null value's klass. | |
827 profile_typecheck(Rsub_klass, Rtmp1); | |
828 | |
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829 check_klass_subtype_fast_path(Rsub_klass, Rsuper_klass, |
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830 Rtmp1, Rtmp2, |
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831 &ok_is_subtype, ¬_subtype, NULL); |
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832 |
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833 check_klass_subtype_slow_path(Rsub_klass, Rsuper_klass, |
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834 Rtmp1, Rtmp2, Rtmp3, /*hack:*/ noreg, |
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835 &ok_is_subtype, NULL); |
0 | 836 |
837 bind(not_subtype); | |
838 profile_typecheck_failed(Rtmp1); | |
839 } | |
840 | |
841 // Separate these two to allow for delay slot in middle | |
842 // These are used to do a test and full jump to exception-throwing code. | |
843 | |
844 // %%%%% Could possibly reoptimize this by testing to see if could use | |
845 // a single conditional branch (i.e. if span is small enough. | |
846 // If you go that route, than get rid of the split and give up | |
847 // on the delay-slot hack. | |
848 | |
849 void InterpreterMacroAssembler::throw_if_not_1_icc( Condition ok_condition, | |
850 Label& ok ) { | |
851 assert_not_delayed(); | |
852 br(ok_condition, true, pt, ok); | |
853 // DELAY SLOT | |
854 } | |
855 | |
856 void InterpreterMacroAssembler::throw_if_not_1_xcc( Condition ok_condition, | |
857 Label& ok ) { | |
858 assert_not_delayed(); | |
859 bp( ok_condition, true, Assembler::xcc, pt, ok); | |
860 // DELAY SLOT | |
861 } | |
862 | |
863 void InterpreterMacroAssembler::throw_if_not_1_x( Condition ok_condition, | |
864 Label& ok ) { | |
865 assert_not_delayed(); | |
866 brx(ok_condition, true, pt, ok); | |
867 // DELAY SLOT | |
868 } | |
869 | |
870 void InterpreterMacroAssembler::throw_if_not_2( address throw_entry_point, | |
871 Register Rscratch, | |
872 Label& ok ) { | |
873 assert(throw_entry_point != NULL, "entry point must be generated by now"); | |
727 | 874 AddressLiteral dest(throw_entry_point); |
875 jump_to(dest, Rscratch); | |
0 | 876 delayed()->nop(); |
877 bind(ok); | |
878 } | |
879 | |
880 | |
881 // And if you cannot use the delay slot, here is a shorthand: | |
882 | |
883 void InterpreterMacroAssembler::throw_if_not_icc( Condition ok_condition, | |
884 address throw_entry_point, | |
885 Register Rscratch ) { | |
886 Label ok; | |
887 if (ok_condition != never) { | |
888 throw_if_not_1_icc( ok_condition, ok); | |
889 delayed()->nop(); | |
890 } | |
891 throw_if_not_2( throw_entry_point, Rscratch, ok); | |
892 } | |
893 void InterpreterMacroAssembler::throw_if_not_xcc( Condition ok_condition, | |
894 address throw_entry_point, | |
895 Register Rscratch ) { | |
896 Label ok; | |
897 if (ok_condition != never) { | |
898 throw_if_not_1_xcc( ok_condition, ok); | |
899 delayed()->nop(); | |
900 } | |
901 throw_if_not_2( throw_entry_point, Rscratch, ok); | |
902 } | |
903 void InterpreterMacroAssembler::throw_if_not_x( Condition ok_condition, | |
904 address throw_entry_point, | |
905 Register Rscratch ) { | |
906 Label ok; | |
907 if (ok_condition != never) { | |
908 throw_if_not_1_x( ok_condition, ok); | |
909 delayed()->nop(); | |
910 } | |
911 throw_if_not_2( throw_entry_point, Rscratch, ok); | |
912 } | |
913 | |
914 // Check that index is in range for array, then shift index by index_shift, and put arrayOop + shifted_index into res | |
915 // Note: res is still shy of address by array offset into object. | |
916 | |
917 void InterpreterMacroAssembler::index_check_without_pop(Register array, Register index, int index_shift, Register tmp, Register res) { | |
918 assert_not_delayed(); | |
919 | |
920 verify_oop(array); | |
921 #ifdef _LP64 | |
922 // sign extend since tos (index) can be a 32bit value | |
923 sra(index, G0, index); | |
924 #endif // _LP64 | |
925 | |
926 // check array | |
927 Label ptr_ok; | |
928 tst(array); | |
929 throw_if_not_1_x( notZero, ptr_ok ); | |
930 delayed()->ld( array, arrayOopDesc::length_offset_in_bytes(), tmp ); // check index | |
931 throw_if_not_2( Interpreter::_throw_NullPointerException_entry, G3_scratch, ptr_ok); | |
932 | |
933 Label index_ok; | |
934 cmp(index, tmp); | |
935 throw_if_not_1_icc( lessUnsigned, index_ok ); | |
936 if (index_shift > 0) delayed()->sll(index, index_shift, index); | |
937 else delayed()->add(array, index, res); // addr - const offset in index | |
938 // convention: move aberrant index into G3_scratch for exception message | |
939 mov(index, G3_scratch); | |
940 throw_if_not_2( Interpreter::_throw_ArrayIndexOutOfBoundsException_entry, G4_scratch, index_ok); | |
941 | |
942 // add offset if didn't do it in delay slot | |
943 if (index_shift > 0) add(array, index, res); // addr - const offset in index | |
944 } | |
945 | |
946 | |
947 void InterpreterMacroAssembler::index_check(Register array, Register index, int index_shift, Register tmp, Register res) { | |
948 assert_not_delayed(); | |
949 | |
950 // pop array | |
951 pop_ptr(array); | |
952 | |
953 // check array | |
954 index_check_without_pop(array, index, index_shift, tmp, res); | |
955 } | |
956 | |
957 | |
6123
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958 void InterpreterMacroAssembler::get_const(Register Rdst) { |
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959 ld_ptr(Lmethod, in_bytes(Method::const_offset()), Rdst); |
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960 } |
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961 |
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962 |
0 | 963 void InterpreterMacroAssembler::get_constant_pool(Register Rdst) { |
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964 get_const(Rdst); |
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965 ld_ptr(Rdst, in_bytes(ConstMethod::constants_offset()), Rdst); |
0 | 966 } |
967 | |
968 | |
969 void InterpreterMacroAssembler::get_constant_pool_cache(Register Rdst) { | |
970 get_constant_pool(Rdst); | |
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971 ld_ptr(Rdst, ConstantPool::cache_offset_in_bytes(), Rdst); |
0 | 972 } |
973 | |
974 | |
975 void InterpreterMacroAssembler::get_cpool_and_tags(Register Rcpool, Register Rtags) { | |
976 get_constant_pool(Rcpool); | |
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977 ld_ptr(Rcpool, ConstantPool::tags_offset_in_bytes(), Rtags); |
0 | 978 } |
979 | |
980 | |
981 // unlock if synchronized method | |
982 // | |
983 // Unlock the receiver if this is a synchronized method. | |
984 // Unlock any Java monitors from syncronized blocks. | |
985 // | |
986 // If there are locked Java monitors | |
987 // If throw_monitor_exception | |
988 // throws IllegalMonitorStateException | |
989 // Else if install_monitor_exception | |
990 // installs IllegalMonitorStateException | |
991 // Else | |
992 // no error processing | |
993 void InterpreterMacroAssembler::unlock_if_synchronized_method(TosState state, | |
994 bool throw_monitor_exception, | |
995 bool install_monitor_exception) { | |
996 Label unlocked, unlock, no_unlock; | |
997 | |
998 // get the value of _do_not_unlock_if_synchronized into G1_scratch | |
727 | 999 const Address do_not_unlock_if_synchronized(G2_thread, |
1000 JavaThread::do_not_unlock_if_synchronized_offset()); | |
0 | 1001 ldbool(do_not_unlock_if_synchronized, G1_scratch); |
1002 stbool(G0, do_not_unlock_if_synchronized); // reset the flag | |
1003 | |
1004 // check if synchronized method | |
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1005 const Address access_flags(Lmethod, Method::access_flags_offset()); |
0 | 1006 interp_verify_oop(Otos_i, state, __FILE__, __LINE__); |
1007 push(state); // save tos | |
727 | 1008 ld(access_flags, G3_scratch); // Load access flags. |
0 | 1009 btst(JVM_ACC_SYNCHRONIZED, G3_scratch); |
727 | 1010 br(zero, false, pt, unlocked); |
0 | 1011 delayed()->nop(); |
1012 | |
1013 // Don't unlock anything if the _do_not_unlock_if_synchronized flag | |
1014 // is set. | |
3839 | 1015 cmp_zero_and_br(Assembler::notZero, G1_scratch, no_unlock); |
0 | 1016 delayed()->nop(); |
1017 | |
1018 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
1019 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
1020 | |
1021 //Intel: if (throw_monitor_exception) ... else ... | |
1022 // Entry already unlocked, need to throw exception | |
1023 //... | |
1024 | |
1025 // pass top-most monitor elem | |
1026 add( top_most_monitor(), O1 ); | |
1027 | |
1028 ld_ptr(O1, BasicObjectLock::obj_offset_in_bytes(), G3_scratch); | |
3839 | 1029 br_notnull_short(G3_scratch, pt, unlock); |
0 | 1030 |
1031 if (throw_monitor_exception) { | |
1032 // Entry already unlocked need to throw an exception | |
1033 MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
1034 should_not_reach_here(); | |
1035 } else { | |
1036 // Monitor already unlocked during a stack unroll. | |
1037 // If requested, install an illegal_monitor_state_exception. | |
1038 // Continue with stack unrolling. | |
1039 if (install_monitor_exception) { | |
1040 MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
1041 } | |
3839 | 1042 ba_short(unlocked); |
0 | 1043 } |
1044 | |
1045 bind(unlock); | |
1046 | |
1047 unlock_object(O1); | |
1048 | |
1049 bind(unlocked); | |
1050 | |
1051 // I0, I1: Might contain return value | |
1052 | |
1053 // Check that all monitors are unlocked | |
1054 { Label loop, exception, entry, restart; | |
1055 | |
1056 Register Rmptr = O0; | |
1057 Register Rtemp = O1; | |
1058 Register Rlimit = Lmonitors; | |
1059 const jint delta = frame::interpreter_frame_monitor_size() * wordSize; | |
1060 assert( (delta & LongAlignmentMask) == 0, | |
1061 "sizeof BasicObjectLock must be even number of doublewords"); | |
1062 | |
1063 #ifdef ASSERT | |
1064 add(top_most_monitor(), Rmptr, delta); | |
1065 { Label L; | |
1066 // ensure that Rmptr starts out above (or at) Rlimit | |
3839 | 1067 cmp_and_brx_short(Rmptr, Rlimit, Assembler::greaterEqualUnsigned, pn, L); |
0 | 1068 stop("monitor stack has negative size"); |
1069 bind(L); | |
1070 } | |
1071 #endif | |
1072 bind(restart); | |
3839 | 1073 ba(entry); |
0 | 1074 delayed()-> |
1075 add(top_most_monitor(), Rmptr, delta); // points to current entry, starting with bottom-most entry | |
1076 | |
1077 // Entry is still locked, need to throw exception | |
1078 bind(exception); | |
1079 if (throw_monitor_exception) { | |
1080 MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
1081 should_not_reach_here(); | |
1082 } else { | |
1083 // Stack unrolling. Unlock object and if requested, install illegal_monitor_exception. | |
1084 // Unlock does not block, so don't have to worry about the frame | |
1085 unlock_object(Rmptr); | |
1086 if (install_monitor_exception) { | |
1087 MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
1088 } | |
3839 | 1089 ba_short(restart); |
0 | 1090 } |
1091 | |
1092 bind(loop); | |
1093 cmp(Rtemp, G0); // check if current entry is used | |
1094 brx(Assembler::notEqual, false, pn, exception); | |
1095 delayed()-> | |
1096 dec(Rmptr, delta); // otherwise advance to next entry | |
1097 #ifdef ASSERT | |
1098 { Label L; | |
1099 // ensure that Rmptr has not somehow stepped below Rlimit | |
3839 | 1100 cmp_and_brx_short(Rmptr, Rlimit, Assembler::greaterEqualUnsigned, pn, L); |
0 | 1101 stop("ran off the end of the monitor stack"); |
1102 bind(L); | |
1103 } | |
1104 #endif | |
1105 bind(entry); | |
1106 cmp(Rmptr, Rlimit); // check if bottom reached | |
1107 brx(Assembler::notEqual, true, pn, loop); // if not at bottom then check this entry | |
1108 delayed()-> | |
1109 ld_ptr(Rmptr, BasicObjectLock::obj_offset_in_bytes() - delta, Rtemp); | |
1110 } | |
1111 | |
1112 bind(no_unlock); | |
1113 pop(state); | |
1114 interp_verify_oop(Otos_i, state, __FILE__, __LINE__); | |
1115 } | |
1116 | |
1117 | |
1118 // remove activation | |
1119 // | |
1120 // Unlock the receiver if this is a synchronized method. | |
1121 // Unlock any Java monitors from syncronized blocks. | |
1122 // Remove the activation from the stack. | |
1123 // | |
1124 // If there are locked Java monitors | |
1125 // If throw_monitor_exception | |
1126 // throws IllegalMonitorStateException | |
1127 // Else if install_monitor_exception | |
1128 // installs IllegalMonitorStateException | |
1129 // Else | |
1130 // no error processing | |
1131 void InterpreterMacroAssembler::remove_activation(TosState state, | |
1132 bool throw_monitor_exception, | |
1133 bool install_monitor_exception) { | |
1134 | |
1135 unlock_if_synchronized_method(state, throw_monitor_exception, install_monitor_exception); | |
1136 | |
1137 // save result (push state before jvmti call and pop it afterwards) and notify jvmti | |
1138 notify_method_exit(false, state, NotifyJVMTI); | |
1139 | |
1140 interp_verify_oop(Otos_i, state, __FILE__, __LINE__); | |
1141 verify_thread(); | |
1142 | |
1143 // return tos | |
1144 assert(Otos_l1 == Otos_i, "adjust code below"); | |
1145 switch (state) { | |
1146 #ifdef _LP64 | |
1147 case ltos: mov(Otos_l, Otos_l->after_save()); break; // O0 -> I0 | |
1148 #else | |
1149 case ltos: mov(Otos_l2, Otos_l2->after_save()); // fall through // O1 -> I1 | |
1150 #endif | |
1151 case btos: // fall through | |
1152 case ctos: | |
1153 case stos: // fall through | |
1154 case atos: // fall through | |
1155 case itos: mov(Otos_l1, Otos_l1->after_save()); break; // O0 -> I0 | |
1156 case ftos: // fall through | |
1157 case dtos: // fall through | |
1158 case vtos: /* nothing to do */ break; | |
1159 default : ShouldNotReachHere(); | |
1160 } | |
1161 | |
1162 #if defined(COMPILER2) && !defined(_LP64) | |
1163 if (state == ltos) { | |
1164 // C2 expects long results in G1 we can't tell if we're returning to interpreted | |
1165 // or compiled so just be safe use G1 and O0/O1 | |
1166 | |
1167 // Shift bits into high (msb) of G1 | |
1168 sllx(Otos_l1->after_save(), 32, G1); | |
1169 // Zero extend low bits | |
1170 srl (Otos_l2->after_save(), 0, Otos_l2->after_save()); | |
1171 or3 (Otos_l2->after_save(), G1, G1); | |
1172 } | |
1173 #endif /* COMPILER2 */ | |
1174 | |
1175 } | |
1176 #endif /* CC_INTERP */ | |
1177 | |
1178 | |
1179 // Lock object | |
1180 // | |
1181 // Argument - lock_reg points to the BasicObjectLock to be used for locking, | |
1182 // it must be initialized with the object to lock | |
1183 void InterpreterMacroAssembler::lock_object(Register lock_reg, Register Object) { | |
1184 if (UseHeavyMonitors) { | |
1185 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
1186 } | |
1187 else { | |
1188 Register obj_reg = Object; | |
1189 Register mark_reg = G4_scratch; | |
1190 Register temp_reg = G1_scratch; | |
727 | 1191 Address lock_addr(lock_reg, BasicObjectLock::lock_offset_in_bytes()); |
1192 Address mark_addr(obj_reg, oopDesc::mark_offset_in_bytes()); | |
0 | 1193 Label done; |
1194 | |
1195 Label slow_case; | |
1196 | |
1197 assert_different_registers(lock_reg, obj_reg, mark_reg, temp_reg); | |
1198 | |
1199 // load markOop from object into mark_reg | |
1200 ld_ptr(mark_addr, mark_reg); | |
1201 | |
1202 if (UseBiasedLocking) { | |
1203 biased_locking_enter(obj_reg, mark_reg, temp_reg, done, &slow_case); | |
1204 } | |
1205 | |
1206 // get the address of basicLock on stack that will be stored in the object | |
1207 // we need a temporary register here as we do not want to clobber lock_reg | |
1208 // (cas clobbers the destination register) | |
1209 mov(lock_reg, temp_reg); | |
1210 // set mark reg to be (markOop of object | UNLOCK_VALUE) | |
1211 or3(mark_reg, markOopDesc::unlocked_value, mark_reg); | |
1212 // initialize the box (Must happen before we update the object mark!) | |
1213 st_ptr(mark_reg, lock_addr, BasicLock::displaced_header_offset_in_bytes()); | |
1214 // compare and exchange object_addr, markOop | 1, stack address of basicLock | |
1215 assert(mark_addr.disp() == 0, "cas must take a zero displacement"); | |
1216 casx_under_lock(mark_addr.base(), mark_reg, temp_reg, | |
1217 (address)StubRoutines::Sparc::atomic_memory_operation_lock_addr()); | |
1218 | |
1219 // if the compare and exchange succeeded we are done (we saw an unlocked object) | |
3839 | 1220 cmp_and_brx_short(mark_reg, temp_reg, Assembler::equal, Assembler::pt, done); |
0 | 1221 |
1222 // We did not see an unlocked object so try the fast recursive case | |
1223 | |
1224 // Check if owner is self by comparing the value in the markOop of object | |
1225 // with the stack pointer | |
1226 sub(temp_reg, SP, temp_reg); | |
1227 #ifdef _LP64 | |
1228 sub(temp_reg, STACK_BIAS, temp_reg); | |
1229 #endif | |
1230 assert(os::vm_page_size() > 0xfff, "page size too small - change the constant"); | |
1231 | |
1232 // Composite "andcc" test: | |
1233 // (a) %sp -vs- markword proximity check, and, | |
1234 // (b) verify mark word LSBs == 0 (Stack-locked). | |
1235 // | |
1236 // FFFFF003/FFFFFFFFFFFF003 is (markOopDesc::lock_mask_in_place | -os::vm_page_size()) | |
1237 // Note that the page size used for %sp proximity testing is arbitrary and is | |
1238 // unrelated to the actual MMU page size. We use a 'logical' page size of | |
1239 // 4096 bytes. F..FFF003 is designed to fit conveniently in the SIMM13 immediate | |
1240 // field of the andcc instruction. | |
1241 andcc (temp_reg, 0xFFFFF003, G0) ; | |
1242 | |
1243 // if condition is true we are done and hence we can store 0 in the displaced | |
1244 // header indicating it is a recursive lock and be done | |
1245 brx(Assembler::zero, true, Assembler::pt, done); | |
1246 delayed()->st_ptr(G0, lock_addr, BasicLock::displaced_header_offset_in_bytes()); | |
1247 | |
1248 // none of the above fast optimizations worked so we have to get into the | |
1249 // slow case of monitor enter | |
1250 bind(slow_case); | |
1251 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
1252 | |
1253 bind(done); | |
1254 } | |
1255 } | |
1256 | |
1257 // Unlocks an object. Used in monitorexit bytecode and remove_activation. | |
1258 // | |
1259 // Argument - lock_reg points to the BasicObjectLock for lock | |
1260 // Throw IllegalMonitorException if object is not locked by current thread | |
1261 void InterpreterMacroAssembler::unlock_object(Register lock_reg) { | |
1262 if (UseHeavyMonitors) { | |
1263 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); | |
1264 } else { | |
1265 Register obj_reg = G3_scratch; | |
1266 Register mark_reg = G4_scratch; | |
1267 Register displaced_header_reg = G1_scratch; | |
727 | 1268 Address lockobj_addr(lock_reg, BasicObjectLock::obj_offset_in_bytes()); |
1269 Address mark_addr(obj_reg, oopDesc::mark_offset_in_bytes()); | |
0 | 1270 Label done; |
1271 | |
1272 if (UseBiasedLocking) { | |
1273 // load the object out of the BasicObjectLock | |
1274 ld_ptr(lockobj_addr, obj_reg); | |
1275 biased_locking_exit(mark_addr, mark_reg, done, true); | |
1276 st_ptr(G0, lockobj_addr); // free entry | |
1277 } | |
1278 | |
1279 // Test first if we are in the fast recursive case | |
727 | 1280 Address lock_addr(lock_reg, BasicObjectLock::lock_offset_in_bytes() + BasicLock::displaced_header_offset_in_bytes()); |
1281 ld_ptr(lock_addr, displaced_header_reg); | |
0 | 1282 br_null(displaced_header_reg, true, Assembler::pn, done); |
1283 delayed()->st_ptr(G0, lockobj_addr); // free entry | |
1284 | |
1285 // See if it is still a light weight lock, if so we just unlock | |
1286 // the object and we are done | |
1287 | |
1288 if (!UseBiasedLocking) { | |
1289 // load the object out of the BasicObjectLock | |
1290 ld_ptr(lockobj_addr, obj_reg); | |
1291 } | |
1292 | |
1293 // we have the displaced header in displaced_header_reg | |
1294 // we expect to see the stack address of the basicLock in case the | |
1295 // lock is still a light weight lock (lock_reg) | |
1296 assert(mark_addr.disp() == 0, "cas must take a zero displacement"); | |
1297 casx_under_lock(mark_addr.base(), lock_reg, displaced_header_reg, | |
1298 (address)StubRoutines::Sparc::atomic_memory_operation_lock_addr()); | |
1299 cmp(lock_reg, displaced_header_reg); | |
1300 brx(Assembler::equal, true, Assembler::pn, done); | |
1301 delayed()->st_ptr(G0, lockobj_addr); // free entry | |
1302 | |
1303 // The lock has been converted into a heavy lock and hence | |
1304 // we need to get into the slow case | |
1305 | |
1306 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); | |
1307 | |
1308 bind(done); | |
1309 } | |
1310 } | |
1311 | |
1312 #ifndef CC_INTERP | |
1313 | |
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1314 // Get the method data pointer from the Method* and set the |
0 | 1315 // specified register to its value. |
1316 | |
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1317 void InterpreterMacroAssembler::set_method_data_pointer() { |
0 | 1318 assert(ProfileInterpreter, "must be profiling interpreter"); |
1319 Label get_continue; | |
1320 | |
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1321 ld_ptr(Lmethod, in_bytes(Method::method_data_offset()), ImethodDataPtr); |
0 | 1322 test_method_data_pointer(get_continue); |
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1323 add(ImethodDataPtr, in_bytes(MethodData::data_offset()), ImethodDataPtr); |
0 | 1324 bind(get_continue); |
1325 } | |
1326 | |
1327 // Set the method data pointer for the current bcp. | |
1328 | |
1329 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
1330 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1331 Label zero_continue; | |
1332 | |
1333 // Test MDO to avoid the call if it is NULL. | |
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1334 ld_ptr(Lmethod, in_bytes(Method::method_data_offset()), ImethodDataPtr); |
0 | 1335 test_method_data_pointer(zero_continue); |
1336 call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), Lmethod, Lbcp); | |
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1337 add(ImethodDataPtr, in_bytes(MethodData::data_offset()), ImethodDataPtr); |
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1338 add(ImethodDataPtr, O0, ImethodDataPtr); |
0 | 1339 bind(zero_continue); |
1340 } | |
1341 | |
1342 // Test ImethodDataPtr. If it is null, continue at the specified label | |
1343 | |
1344 void InterpreterMacroAssembler::test_method_data_pointer(Label& zero_continue) { | |
1345 assert(ProfileInterpreter, "must be profiling interpreter"); | |
3839 | 1346 br_null_short(ImethodDataPtr, Assembler::pn, zero_continue); |
0 | 1347 } |
1348 | |
1349 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
1350 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1351 #ifdef ASSERT | |
1352 Label verify_continue; | |
1353 test_method_data_pointer(verify_continue); | |
1354 | |
1355 // If the mdp is valid, it will point to a DataLayout header which is | |
1356 // consistent with the bcp. The converse is highly probable also. | |
1357 lduh(ImethodDataPtr, in_bytes(DataLayout::bci_offset()), G3_scratch); | |
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1358 ld_ptr(Lmethod, Method::const_offset(), O5); |
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1359 add(G3_scratch, in_bytes(ConstMethod::codes_offset()), G3_scratch); |
0 | 1360 add(G3_scratch, O5, G3_scratch); |
1361 cmp(Lbcp, G3_scratch); | |
1362 brx(Assembler::equal, false, Assembler::pt, verify_continue); | |
1363 | |
1364 Register temp_reg = O5; | |
1365 delayed()->mov(ImethodDataPtr, temp_reg); | |
1366 // %%% should use call_VM_leaf here? | |
1367 //call_VM_leaf(noreg, ..., Lmethod, Lbcp, ImethodDataPtr); | |
1368 save_frame_and_mov(sizeof(jdouble) / wordSize, Lmethod, O0, Lbcp, O1); | |
727 | 1369 Address d_save(FP, -sizeof(jdouble) + STACK_BIAS); |
0 | 1370 stf(FloatRegisterImpl::D, Ftos_d, d_save); |
1371 mov(temp_reg->after_save(), O2); | |
1372 save_thread(L7_thread_cache); | |
1373 call(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), relocInfo::none); | |
1374 delayed()->nop(); | |
1375 restore_thread(L7_thread_cache); | |
1376 ldf(FloatRegisterImpl::D, d_save, Ftos_d); | |
1377 restore(); | |
1378 bind(verify_continue); | |
1379 #endif // ASSERT | |
1380 } | |
1381 | |
1382 void InterpreterMacroAssembler::test_invocation_counter_for_mdp(Register invocation_count, | |
1383 Register Rtmp, | |
1384 Label &profile_continue) { | |
1385 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1386 // Control will flow to "profile_continue" if the counter is less than the | |
1387 // limit or if we call profile_method() | |
1388 | |
1389 Label done; | |
1390 | |
1391 // if no method data exists, and the counter is high enough, make one | |
3839 | 1392 br_notnull_short(ImethodDataPtr, Assembler::pn, done); |
0 | 1393 |
1394 // Test to see if we should create a method data oop | |
727 | 1395 AddressLiteral profile_limit((address) &InvocationCounter::InterpreterProfileLimit); |
1396 sethi(profile_limit, Rtmp); | |
1397 ld(Rtmp, profile_limit.low10(), Rtmp); | |
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1398 cmp(invocation_count, Rtmp); |
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1399 // Use long branches because call_VM() code and following code generated by |
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1400 // test_backedge_count_for_osr() is large in debug VM. |
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1401 br(Assembler::lessUnsigned, false, Assembler::pn, profile_continue); |
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1402 delayed()->nop(); |
0 | 1403 |
1404 // Build it now. | |
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1405 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
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1406 set_method_data_pointer_for_bcp(); |
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1407 ba(profile_continue); |
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1408 delayed()->nop(); |
0 | 1409 bind(done); |
1410 } | |
1411 | |
1412 // Store a value at some constant offset from the method data pointer. | |
1413 | |
1414 void InterpreterMacroAssembler::set_mdp_data_at(int constant, Register value) { | |
1415 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1416 st_ptr(value, ImethodDataPtr, constant); | |
1417 } | |
1418 | |
1419 void InterpreterMacroAssembler::increment_mdp_data_at(Address counter, | |
1420 Register bumped_count, | |
1421 bool decrement) { | |
1422 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1423 | |
1424 // Load the counter. | |
1425 ld_ptr(counter, bumped_count); | |
1426 | |
1427 if (decrement) { | |
1428 // Decrement the register. Set condition codes. | |
1429 subcc(bumped_count, DataLayout::counter_increment, bumped_count); | |
1430 | |
1431 // If the decrement causes the counter to overflow, stay negative | |
1432 Label L; | |
1433 brx(Assembler::negative, true, Assembler::pn, L); | |
1434 | |
1435 // Store the decremented counter, if it is still negative. | |
1436 delayed()->st_ptr(bumped_count, counter); | |
1437 bind(L); | |
1438 } else { | |
1439 // Increment the register. Set carry flag. | |
1440 addcc(bumped_count, DataLayout::counter_increment, bumped_count); | |
1441 | |
1442 // If the increment causes the counter to overflow, pull back by 1. | |
1443 assert(DataLayout::counter_increment == 1, "subc works"); | |
1444 subc(bumped_count, G0, bumped_count); | |
1445 | |
1446 // Store the incremented counter. | |
1447 st_ptr(bumped_count, counter); | |
1448 } | |
1449 } | |
1450 | |
1451 // Increment the value at some constant offset from the method data pointer. | |
1452 | |
1453 void InterpreterMacroAssembler::increment_mdp_data_at(int constant, | |
1454 Register bumped_count, | |
1455 bool decrement) { | |
1456 // Locate the counter at a fixed offset from the mdp: | |
727 | 1457 Address counter(ImethodDataPtr, constant); |
0 | 1458 increment_mdp_data_at(counter, bumped_count, decrement); |
1459 } | |
1460 | |
1461 // Increment the value at some non-fixed (reg + constant) offset from | |
1462 // the method data pointer. | |
1463 | |
1464 void InterpreterMacroAssembler::increment_mdp_data_at(Register reg, | |
1465 int constant, | |
1466 Register bumped_count, | |
1467 Register scratch2, | |
1468 bool decrement) { | |
1469 // Add the constant to reg to get the offset. | |
1470 add(ImethodDataPtr, reg, scratch2); | |
727 | 1471 Address counter(scratch2, constant); |
0 | 1472 increment_mdp_data_at(counter, bumped_count, decrement); |
1473 } | |
1474 | |
1475 // Set a flag value at the current method data pointer position. | |
1476 // Updates a single byte of the header, to avoid races with other header bits. | |
1477 | |
1478 void InterpreterMacroAssembler::set_mdp_flag_at(int flag_constant, | |
1479 Register scratch) { | |
1480 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1481 // Load the data header | |
1482 ldub(ImethodDataPtr, in_bytes(DataLayout::flags_offset()), scratch); | |
1483 | |
1484 // Set the flag | |
1485 or3(scratch, flag_constant, scratch); | |
1486 | |
1487 // Store the modified header. | |
1488 stb(scratch, ImethodDataPtr, in_bytes(DataLayout::flags_offset())); | |
1489 } | |
1490 | |
1491 // Test the location at some offset from the method data pointer. | |
1492 // If it is not equal to value, branch to the not_equal_continue Label. | |
1493 // Set condition codes to match the nullness of the loaded value. | |
1494 | |
1495 void InterpreterMacroAssembler::test_mdp_data_at(int offset, | |
1496 Register value, | |
1497 Label& not_equal_continue, | |
1498 Register scratch) { | |
1499 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1500 ld_ptr(ImethodDataPtr, offset, scratch); | |
1501 cmp(value, scratch); | |
1502 brx(Assembler::notEqual, false, Assembler::pn, not_equal_continue); | |
1503 delayed()->tst(scratch); | |
1504 } | |
1505 | |
1506 // Update the method data pointer by the displacement located at some fixed | |
1507 // offset from the method data pointer. | |
1508 | |
1509 void InterpreterMacroAssembler::update_mdp_by_offset(int offset_of_disp, | |
1510 Register scratch) { | |
1511 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1512 ld_ptr(ImethodDataPtr, offset_of_disp, scratch); | |
1513 add(ImethodDataPtr, scratch, ImethodDataPtr); | |
1514 } | |
1515 | |
1516 // Update the method data pointer by the displacement located at the | |
1517 // offset (reg + offset_of_disp). | |
1518 | |
1519 void InterpreterMacroAssembler::update_mdp_by_offset(Register reg, | |
1520 int offset_of_disp, | |
1521 Register scratch) { | |
1522 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1523 add(reg, offset_of_disp, scratch); | |
1524 ld_ptr(ImethodDataPtr, scratch, scratch); | |
1525 add(ImethodDataPtr, scratch, ImethodDataPtr); | |
1526 } | |
1527 | |
1528 // Update the method data pointer by a simple constant displacement. | |
1529 | |
1530 void InterpreterMacroAssembler::update_mdp_by_constant(int constant) { | |
1531 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1532 add(ImethodDataPtr, constant, ImethodDataPtr); | |
1533 } | |
1534 | |
1535 // Update the method data pointer for a _ret bytecode whose target | |
1536 // was not among our cached targets. | |
1537 | |
1538 void InterpreterMacroAssembler::update_mdp_for_ret(TosState state, | |
1539 Register return_bci) { | |
1540 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1541 push(state); | |
1542 st_ptr(return_bci, l_tmp); // protect return_bci, in case it is volatile | |
1543 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); | |
1544 ld_ptr(l_tmp, return_bci); | |
1545 pop(state); | |
1546 } | |
1547 | |
1548 // Count a taken branch in the bytecodes. | |
1549 | |
1550 void InterpreterMacroAssembler::profile_taken_branch(Register scratch, Register bumped_count) { | |
1551 if (ProfileInterpreter) { | |
1552 Label profile_continue; | |
1553 | |
1554 // If no method data exists, go to profile_continue. | |
1555 test_method_data_pointer(profile_continue); | |
1556 | |
1557 // We are taking a branch. Increment the taken count. | |
1558 increment_mdp_data_at(in_bytes(JumpData::taken_offset()), bumped_count); | |
1559 | |
1560 // The method data pointer needs to be updated to reflect the new target. | |
1561 update_mdp_by_offset(in_bytes(JumpData::displacement_offset()), scratch); | |
1562 bind (profile_continue); | |
1563 } | |
1564 } | |
1565 | |
1566 | |
1567 // Count a not-taken branch in the bytecodes. | |
1568 | |
1569 void InterpreterMacroAssembler::profile_not_taken_branch(Register scratch) { | |
1570 if (ProfileInterpreter) { | |
1571 Label profile_continue; | |
1572 | |
1573 // If no method data exists, go to profile_continue. | |
1574 test_method_data_pointer(profile_continue); | |
1575 | |
1576 // We are taking a branch. Increment the not taken count. | |
1577 increment_mdp_data_at(in_bytes(BranchData::not_taken_offset()), scratch); | |
1578 | |
1579 // The method data pointer needs to be updated to correspond to the | |
1580 // next bytecode. | |
1581 update_mdp_by_constant(in_bytes(BranchData::branch_data_size())); | |
1582 bind (profile_continue); | |
1583 } | |
1584 } | |
1585 | |
1586 | |
1587 // Count a non-virtual call in the bytecodes. | |
1588 | |
1589 void InterpreterMacroAssembler::profile_call(Register scratch) { | |
1590 if (ProfileInterpreter) { | |
1591 Label profile_continue; | |
1592 | |
1593 // If no method data exists, go to profile_continue. | |
1594 test_method_data_pointer(profile_continue); | |
1595 | |
1596 // We are making a call. Increment the count. | |
1597 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); | |
1598 | |
1599 // The method data pointer needs to be updated to reflect the new target. | |
1600 update_mdp_by_constant(in_bytes(CounterData::counter_data_size())); | |
1601 bind (profile_continue); | |
1602 } | |
1603 } | |
1604 | |
1605 | |
1606 // Count a final call in the bytecodes. | |
1607 | |
1608 void InterpreterMacroAssembler::profile_final_call(Register scratch) { | |
1609 if (ProfileInterpreter) { | |
1610 Label profile_continue; | |
1611 | |
1612 // If no method data exists, go to profile_continue. | |
1613 test_method_data_pointer(profile_continue); | |
1614 | |
1615 // We are making a call. Increment the count. | |
1616 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); | |
1617 | |
1618 // The method data pointer needs to be updated to reflect the new target. | |
1619 update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size())); | |
1620 bind (profile_continue); | |
1621 } | |
1622 } | |
1623 | |
1624 | |
1625 // Count a virtual call in the bytecodes. | |
1626 | |
1627 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, | |
1503 | 1628 Register scratch, |
1629 bool receiver_can_be_null) { | |
0 | 1630 if (ProfileInterpreter) { |
1631 Label profile_continue; | |
1632 | |
1633 // If no method data exists, go to profile_continue. | |
1634 test_method_data_pointer(profile_continue); | |
1635 | |
1503 | 1636 |
1637 Label skip_receiver_profile; | |
1638 if (receiver_can_be_null) { | |
1639 Label not_null; | |
3839 | 1640 br_notnull_short(receiver, Assembler::pt, not_null); |
1503 | 1641 // We are making a call. Increment the count for null receiver. |
1642 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); | |
3839 | 1643 ba_short(skip_receiver_profile); |
1503 | 1644 bind(not_null); |
1645 } | |
1646 | |
0 | 1647 // Record the receiver type. |
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1648 record_klass_in_profile(receiver, scratch, true); |
1503 | 1649 bind(skip_receiver_profile); |
0 | 1650 |
1651 // The method data pointer needs to be updated to reflect the new target. | |
1652 update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size())); | |
1653 bind (profile_continue); | |
1654 } | |
1655 } | |
1656 | |
1657 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
1658 Register receiver, Register scratch, | |
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1659 int start_row, Label& done, bool is_virtual_call) { |
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1660 if (TypeProfileWidth == 0) { |
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1661 if (is_virtual_call) { |
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1662 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); |
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1663 } |
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1664 return; |
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1665 } |
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1666 |
0 | 1667 int last_row = VirtualCallData::row_limit() - 1; |
1668 assert(start_row <= last_row, "must be work left to do"); | |
1669 // Test this row for both the receiver and for null. | |
1670 // Take any of three different outcomes: | |
1671 // 1. found receiver => increment count and goto done | |
1672 // 2. found null => keep looking for case 1, maybe allocate this cell | |
1673 // 3. found something else => keep looking for cases 1 and 2 | |
1674 // Case 3 is handled by a recursive call. | |
1675 for (int row = start_row; row <= last_row; row++) { | |
1676 Label next_test; | |
1677 bool test_for_null_also = (row == start_row); | |
1678 | |
1679 // See if the receiver is receiver[n]. | |
1680 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
1681 test_mdp_data_at(recvr_offset, receiver, next_test, scratch); | |
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1682 // delayed()->tst(scratch); |
0 | 1683 |
1684 // The receiver is receiver[n]. Increment count[n]. | |
1685 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
1686 increment_mdp_data_at(count_offset, scratch); | |
3839 | 1687 ba_short(done); |
0 | 1688 bind(next_test); |
1689 | |
1690 if (test_for_null_also) { | |
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1691 Label found_null; |
0 | 1692 // Failed the equality check on receiver[n]... Test for null. |
1693 if (start_row == last_row) { | |
1694 // The only thing left to do is handle the null case. | |
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1695 if (is_virtual_call) { |
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1696 brx(Assembler::zero, false, Assembler::pn, found_null); |
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1697 delayed()->nop(); |
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1698 // Receiver did not match any saved receiver and there is no empty row for it. |
1251
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1699 // Increment total counter to indicate polymorphic case. |
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1700 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); |
3839 | 1701 ba_short(done); |
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1702 bind(found_null); |
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1703 } else { |
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1704 brx(Assembler::notZero, false, Assembler::pt, done); |
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1705 delayed()->nop(); |
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1706 } |
0 | 1707 break; |
1708 } | |
1709 // Since null is rare, make it be the branch-taken case. | |
1710 brx(Assembler::zero, false, Assembler::pn, found_null); | |
1711 delayed()->nop(); | |
1712 | |
1713 // Put all the "Case 3" tests here. | |
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1714 record_klass_in_profile_helper(receiver, scratch, start_row + 1, done, is_virtual_call); |
0 | 1715 |
1716 // Found a null. Keep searching for a matching receiver, | |
1717 // but remember that this is an empty (unused) slot. | |
1718 bind(found_null); | |
1719 } | |
1720 } | |
1721 | |
1722 // In the fall-through case, we found no matching receiver, but we | |
1723 // observed the receiver[start_row] is NULL. | |
1724 | |
1725 // Fill in the receiver field and increment the count. | |
1726 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
1727 set_mdp_data_at(recvr_offset, receiver); | |
1728 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
1729 mov(DataLayout::counter_increment, scratch); | |
1730 set_mdp_data_at(count_offset, scratch); | |
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1731 if (start_row > 0) { |
3839 | 1732 ba_short(done); |
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1733 } |
0 | 1734 } |
1735 | |
1736 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver, | |
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1737 Register scratch, bool is_virtual_call) { |
0 | 1738 assert(ProfileInterpreter, "must be profiling"); |
1739 Label done; | |
1740 | |
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1741 record_klass_in_profile_helper(receiver, scratch, 0, done, is_virtual_call); |
0 | 1742 |
1743 bind (done); | |
1744 } | |
1745 | |
1746 | |
1747 // Count a ret in the bytecodes. | |
1748 | |
1749 void InterpreterMacroAssembler::profile_ret(TosState state, | |
1750 Register return_bci, | |
1751 Register scratch) { | |
1752 if (ProfileInterpreter) { | |
1753 Label profile_continue; | |
1754 uint row; | |
1755 | |
1756 // If no method data exists, go to profile_continue. | |
1757 test_method_data_pointer(profile_continue); | |
1758 | |
1759 // Update the total ret count. | |
1760 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); | |
1761 | |
1762 for (row = 0; row < RetData::row_limit(); row++) { | |
1763 Label next_test; | |
1764 | |
1765 // See if return_bci is equal to bci[n]: | |
1766 test_mdp_data_at(in_bytes(RetData::bci_offset(row)), | |
1767 return_bci, next_test, scratch); | |
1768 | |
1769 // return_bci is equal to bci[n]. Increment the count. | |
1770 increment_mdp_data_at(in_bytes(RetData::bci_count_offset(row)), scratch); | |
1771 | |
1772 // The method data pointer needs to be updated to reflect the new target. | |
1773 update_mdp_by_offset(in_bytes(RetData::bci_displacement_offset(row)), scratch); | |
3839 | 1774 ba_short(profile_continue); |
0 | 1775 bind(next_test); |
1776 } | |
1777 | |
1778 update_mdp_for_ret(state, return_bci); | |
1779 | |
1780 bind (profile_continue); | |
1781 } | |
1782 } | |
1783 | |
1784 // Profile an unexpected null in the bytecodes. | |
1785 void InterpreterMacroAssembler::profile_null_seen(Register scratch) { | |
1786 if (ProfileInterpreter) { | |
1787 Label profile_continue; | |
1788 | |
1789 // If no method data exists, go to profile_continue. | |
1790 test_method_data_pointer(profile_continue); | |
1791 | |
1792 set_mdp_flag_at(BitData::null_seen_byte_constant(), scratch); | |
1793 | |
1794 // The method data pointer needs to be updated. | |
1795 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1796 if (TypeProfileCasts) { | |
1797 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1798 } | |
1799 update_mdp_by_constant(mdp_delta); | |
1800 | |
1801 bind (profile_continue); | |
1802 } | |
1803 } | |
1804 | |
1805 void InterpreterMacroAssembler::profile_typecheck(Register klass, | |
1806 Register scratch) { | |
1807 if (ProfileInterpreter) { | |
1808 Label profile_continue; | |
1809 | |
1810 // If no method data exists, go to profile_continue. | |
1811 test_method_data_pointer(profile_continue); | |
1812 | |
1813 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1814 if (TypeProfileCasts) { | |
1815 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1816 | |
1817 // Record the object type. | |
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1818 record_klass_in_profile(klass, scratch, false); |
0 | 1819 } |
1820 | |
1821 // The method data pointer needs to be updated. | |
1822 update_mdp_by_constant(mdp_delta); | |
1823 | |
1824 bind (profile_continue); | |
1825 } | |
1826 } | |
1827 | |
1828 void InterpreterMacroAssembler::profile_typecheck_failed(Register scratch) { | |
1829 if (ProfileInterpreter && TypeProfileCasts) { | |
1830 Label profile_continue; | |
1831 | |
1832 // If no method data exists, go to profile_continue. | |
1833 test_method_data_pointer(profile_continue); | |
1834 | |
1835 int count_offset = in_bytes(CounterData::count_offset()); | |
1836 // Back up the address, since we have already bumped the mdp. | |
1837 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
1838 | |
1839 // *Decrement* the counter. We expect to see zero or small negatives. | |
1840 increment_mdp_data_at(count_offset, scratch, true); | |
1841 | |
1842 bind (profile_continue); | |
1843 } | |
1844 } | |
1845 | |
1846 // Count the default case of a switch construct. | |
1847 | |
1848 void InterpreterMacroAssembler::profile_switch_default(Register scratch) { | |
1849 if (ProfileInterpreter) { | |
1850 Label profile_continue; | |
1851 | |
1852 // If no method data exists, go to profile_continue. | |
1853 test_method_data_pointer(profile_continue); | |
1854 | |
1855 // Update the default case count | |
1856 increment_mdp_data_at(in_bytes(MultiBranchData::default_count_offset()), | |
1857 scratch); | |
1858 | |
1859 // The method data pointer needs to be updated. | |
1860 update_mdp_by_offset( | |
1861 in_bytes(MultiBranchData::default_displacement_offset()), | |
1862 scratch); | |
1863 | |
1864 bind (profile_continue); | |
1865 } | |
1866 } | |
1867 | |
1868 // Count the index'th case of a switch construct. | |
1869 | |
1870 void InterpreterMacroAssembler::profile_switch_case(Register index, | |
1871 Register scratch, | |
1872 Register scratch2, | |
1873 Register scratch3) { | |
1874 if (ProfileInterpreter) { | |
1875 Label profile_continue; | |
1876 | |
1877 // If no method data exists, go to profile_continue. | |
1878 test_method_data_pointer(profile_continue); | |
1879 | |
1880 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes() | |
1881 set(in_bytes(MultiBranchData::per_case_size()), scratch); | |
1882 smul(index, scratch, scratch); | |
1883 add(scratch, in_bytes(MultiBranchData::case_array_offset()), scratch); | |
1884 | |
1885 // Update the case count | |
1886 increment_mdp_data_at(scratch, | |
1887 in_bytes(MultiBranchData::relative_count_offset()), | |
1888 scratch2, | |
1889 scratch3); | |
1890 | |
1891 // The method data pointer needs to be updated. | |
1892 update_mdp_by_offset(scratch, | |
1893 in_bytes(MultiBranchData::relative_displacement_offset()), | |
1894 scratch2); | |
1895 | |
1896 bind (profile_continue); | |
1897 } | |
1898 } | |
1899 | |
1900 // add a InterpMonitorElem to stack (see frame_sparc.hpp) | |
1901 | |
1902 void InterpreterMacroAssembler::add_monitor_to_stack( bool stack_is_empty, | |
1903 Register Rtemp, | |
1904 Register Rtemp2 ) { | |
1905 | |
1906 Register Rlimit = Lmonitors; | |
1907 const jint delta = frame::interpreter_frame_monitor_size() * wordSize; | |
1908 assert( (delta & LongAlignmentMask) == 0, | |
1909 "sizeof BasicObjectLock must be even number of doublewords"); | |
1910 | |
1911 sub( SP, delta, SP); | |
1912 sub( Lesp, delta, Lesp); | |
1913 sub( Lmonitors, delta, Lmonitors); | |
1914 | |
1915 if (!stack_is_empty) { | |
1916 | |
1917 // must copy stack contents down | |
1918 | |
1919 Label start_copying, next; | |
1920 | |
1921 // untested("monitor stack expansion"); | |
1922 compute_stack_base(Rtemp); | |
3839 | 1923 ba(start_copying); |
1924 delayed()->cmp(Rtemp, Rlimit); // done? duplicated below | |
0 | 1925 |
1926 // note: must copy from low memory upwards | |
1927 // On entry to loop, | |
1928 // Rtemp points to new base of stack, Lesp points to new end of stack (1 past TOS) | |
1929 // Loop mutates Rtemp | |
1930 | |
1931 bind( next); | |
1932 | |
1933 st_ptr(Rtemp2, Rtemp, 0); | |
1934 inc(Rtemp, wordSize); | |
1935 cmp(Rtemp, Rlimit); // are we done? (duplicated above) | |
1936 | |
1937 bind( start_copying ); | |
1938 | |
1939 brx( notEqual, true, pn, next ); | |
1940 delayed()->ld_ptr( Rtemp, delta, Rtemp2 ); | |
1941 | |
1942 // done copying stack | |
1943 } | |
1944 } | |
1945 | |
1946 // Locals | |
1947 void InterpreterMacroAssembler::access_local_ptr( Register index, Register dst ) { | |
1948 assert_not_delayed(); | |
1506 | 1949 sll(index, Interpreter::logStackElementSize, index); |
0 | 1950 sub(Llocals, index, index); |
1506 | 1951 ld_ptr(index, 0, dst); |
0 | 1952 // Note: index must hold the effective address--the iinc template uses it |
1953 } | |
1954 | |
1955 // Just like access_local_ptr but the tag is a returnAddress | |
1956 void InterpreterMacroAssembler::access_local_returnAddress(Register index, | |
1957 Register dst ) { | |
1958 assert_not_delayed(); | |
1506 | 1959 sll(index, Interpreter::logStackElementSize, index); |
0 | 1960 sub(Llocals, index, index); |
1506 | 1961 ld_ptr(index, 0, dst); |
0 | 1962 } |
1963 | |
1964 void InterpreterMacroAssembler::access_local_int( Register index, Register dst ) { | |
1965 assert_not_delayed(); | |
1506 | 1966 sll(index, Interpreter::logStackElementSize, index); |
0 | 1967 sub(Llocals, index, index); |
1506 | 1968 ld(index, 0, dst); |
0 | 1969 // Note: index must hold the effective address--the iinc template uses it |
1970 } | |
1971 | |
1972 | |
1973 void InterpreterMacroAssembler::access_local_long( Register index, Register dst ) { | |
1974 assert_not_delayed(); | |
1506 | 1975 sll(index, Interpreter::logStackElementSize, index); |
0 | 1976 sub(Llocals, index, index); |
1977 // First half stored at index n+1 (which grows down from Llocals[n]) | |
1978 load_unaligned_long(index, Interpreter::local_offset_in_bytes(1), dst); | |
1979 } | |
1980 | |
1981 | |
1982 void InterpreterMacroAssembler::access_local_float( Register index, FloatRegister dst ) { | |
1983 assert_not_delayed(); | |
1506 | 1984 sll(index, Interpreter::logStackElementSize, index); |
0 | 1985 sub(Llocals, index, index); |
1506 | 1986 ldf(FloatRegisterImpl::S, index, 0, dst); |
0 | 1987 } |
1988 | |
1989 | |
1990 void InterpreterMacroAssembler::access_local_double( Register index, FloatRegister dst ) { | |
1991 assert_not_delayed(); | |
1506 | 1992 sll(index, Interpreter::logStackElementSize, index); |
0 | 1993 sub(Llocals, index, index); |
1994 load_unaligned_double(index, Interpreter::local_offset_in_bytes(1), dst); | |
1995 } | |
1996 | |
1997 | |
1998 #ifdef ASSERT | |
1999 void InterpreterMacroAssembler::check_for_regarea_stomp(Register Rindex, int offset, Register Rlimit, Register Rscratch, Register Rscratch1) { | |
2000 Label L; | |
2001 | |
2002 assert(Rindex != Rscratch, "Registers cannot be same"); | |
2003 assert(Rindex != Rscratch1, "Registers cannot be same"); | |
2004 assert(Rlimit != Rscratch, "Registers cannot be same"); | |
2005 assert(Rlimit != Rscratch1, "Registers cannot be same"); | |
2006 assert(Rscratch1 != Rscratch, "Registers cannot be same"); | |
2007 | |
2008 // untested("reg area corruption"); | |
2009 add(Rindex, offset, Rscratch); | |
2010 add(Rlimit, 64 + STACK_BIAS, Rscratch1); | |
3839 | 2011 cmp_and_brx_short(Rscratch, Rscratch1, Assembler::greaterEqualUnsigned, pn, L); |
0 | 2012 stop("regsave area is being clobbered"); |
2013 bind(L); | |
2014 } | |
2015 #endif // ASSERT | |
2016 | |
2017 | |
2018 void InterpreterMacroAssembler::store_local_int( Register index, Register src ) { | |
2019 assert_not_delayed(); | |
1506 | 2020 sll(index, Interpreter::logStackElementSize, index); |
0 | 2021 sub(Llocals, index, index); |
1506 | 2022 debug_only(check_for_regarea_stomp(index, 0, FP, G1_scratch, G4_scratch);) |
2023 st(src, index, 0); | |
0 | 2024 } |
2025 | |
1506 | 2026 void InterpreterMacroAssembler::store_local_ptr( Register index, Register src ) { |
0 | 2027 assert_not_delayed(); |
1506 | 2028 sll(index, Interpreter::logStackElementSize, index); |
0 | 2029 sub(Llocals, index, index); |
1506 | 2030 #ifdef ASSERT |
2031 check_for_regarea_stomp(index, 0, FP, G1_scratch, G4_scratch); | |
2032 #endif | |
2033 st_ptr(src, index, 0); | |
0 | 2034 } |
2035 | |
2036 | |
2037 | |
1506 | 2038 void InterpreterMacroAssembler::store_local_ptr( int n, Register src ) { |
2039 st_ptr(src, Llocals, Interpreter::local_offset_in_bytes(n)); | |
0 | 2040 } |
2041 | |
2042 void InterpreterMacroAssembler::store_local_long( Register index, Register src ) { | |
2043 assert_not_delayed(); | |
1506 | 2044 sll(index, Interpreter::logStackElementSize, index); |
0 | 2045 sub(Llocals, index, index); |
1506 | 2046 #ifdef ASSERT |
0 | 2047 check_for_regarea_stomp(index, Interpreter::local_offset_in_bytes(1), FP, G1_scratch, G4_scratch); |
1506 | 2048 #endif |
0 | 2049 store_unaligned_long(src, index, Interpreter::local_offset_in_bytes(1)); // which is n+1 |
2050 } | |
2051 | |
2052 | |
2053 void InterpreterMacroAssembler::store_local_float( Register index, FloatRegister src ) { | |
2054 assert_not_delayed(); | |
1506 | 2055 sll(index, Interpreter::logStackElementSize, index); |
0 | 2056 sub(Llocals, index, index); |
1506 | 2057 #ifdef ASSERT |
2058 check_for_regarea_stomp(index, 0, FP, G1_scratch, G4_scratch); | |
2059 #endif | |
2060 stf(FloatRegisterImpl::S, src, index, 0); | |
0 | 2061 } |
2062 | |
2063 | |
2064 void InterpreterMacroAssembler::store_local_double( Register index, FloatRegister src ) { | |
2065 assert_not_delayed(); | |
1506 | 2066 sll(index, Interpreter::logStackElementSize, index); |
0 | 2067 sub(Llocals, index, index); |
1506 | 2068 #ifdef ASSERT |
0 | 2069 check_for_regarea_stomp(index, Interpreter::local_offset_in_bytes(1), FP, G1_scratch, G4_scratch); |
1506 | 2070 #endif |
0 | 2071 store_unaligned_double(src, index, Interpreter::local_offset_in_bytes(1)); |
2072 } | |
2073 | |
2074 | |
2075 int InterpreterMacroAssembler::top_most_monitor_byte_offset() { | |
2076 const jint delta = frame::interpreter_frame_monitor_size() * wordSize; | |
2077 int rounded_vm_local_words = ::round_to(frame::interpreter_frame_vm_local_words, WordsPerLong); | |
2078 return ((-rounded_vm_local_words * wordSize) - delta ) + STACK_BIAS; | |
2079 } | |
2080 | |
2081 | |
2082 Address InterpreterMacroAssembler::top_most_monitor() { | |
727 | 2083 return Address(FP, top_most_monitor_byte_offset()); |
0 | 2084 } |
2085 | |
2086 | |
2087 void InterpreterMacroAssembler::compute_stack_base( Register Rdest ) { | |
2088 add( Lesp, wordSize, Rdest ); | |
2089 } | |
2090 | |
2091 #endif /* CC_INTERP */ | |
2092 | |
2093 void InterpreterMacroAssembler::increment_invocation_counter( Register Rtmp, Register Rtmp2 ) { | |
2094 assert(UseCompiler, "incrementing must be useful"); | |
2095 #ifdef CC_INTERP | |
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2096 Address inv_counter(G5_method, Method::invocation_counter_offset() + |
727 | 2097 InvocationCounter::counter_offset()); |
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2098 Address be_counter (G5_method, Method::backedge_counter_offset() + |
727 | 2099 InvocationCounter::counter_offset()); |
0 | 2100 #else |
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2101 Address inv_counter(Lmethod, Method::invocation_counter_offset() + |
727 | 2102 InvocationCounter::counter_offset()); |
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2103 Address be_counter (Lmethod, Method::backedge_counter_offset() + |
727 | 2104 InvocationCounter::counter_offset()); |
0 | 2105 #endif /* CC_INTERP */ |
2106 int delta = InvocationCounter::count_increment; | |
2107 | |
2108 // Load each counter in a register | |
2109 ld( inv_counter, Rtmp ); | |
2110 ld( be_counter, Rtmp2 ); | |
2111 | |
2112 assert( is_simm13( delta ), " delta too large."); | |
2113 | |
2114 // Add the delta to the invocation counter and store the result | |
2115 add( Rtmp, delta, Rtmp ); | |
2116 | |
2117 // Mask the backedge counter | |
2118 and3( Rtmp2, InvocationCounter::count_mask_value, Rtmp2 ); | |
2119 | |
2120 // Store value | |
2121 st( Rtmp, inv_counter); | |
2122 | |
2123 // Add invocation counter + backedge counter | |
2124 add( Rtmp, Rtmp2, Rtmp); | |
2125 | |
2126 // Note that this macro must leave the backedge_count + invocation_count in Rtmp! | |
2127 } | |
2128 | |
2129 void InterpreterMacroAssembler::increment_backedge_counter( Register Rtmp, Register Rtmp2 ) { | |
2130 assert(UseCompiler, "incrementing must be useful"); | |
2131 #ifdef CC_INTERP | |
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2132 Address be_counter (G5_method, Method::backedge_counter_offset() + |
727 | 2133 InvocationCounter::counter_offset()); |
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2134 Address inv_counter(G5_method, Method::invocation_counter_offset() + |
727 | 2135 InvocationCounter::counter_offset()); |
0 | 2136 #else |
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2137 Address be_counter (Lmethod, Method::backedge_counter_offset() + |
727 | 2138 InvocationCounter::counter_offset()); |
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2139 Address inv_counter(Lmethod, Method::invocation_counter_offset() + |
727 | 2140 InvocationCounter::counter_offset()); |
0 | 2141 #endif /* CC_INTERP */ |
2142 int delta = InvocationCounter::count_increment; | |
2143 // Load each counter in a register | |
2144 ld( be_counter, Rtmp ); | |
2145 ld( inv_counter, Rtmp2 ); | |
2146 | |
2147 // Add the delta to the backedge counter | |
2148 add( Rtmp, delta, Rtmp ); | |
2149 | |
2150 // Mask the invocation counter, add to backedge counter | |
2151 and3( Rtmp2, InvocationCounter::count_mask_value, Rtmp2 ); | |
2152 | |
2153 // and store the result to memory | |
2154 st( Rtmp, be_counter ); | |
2155 | |
2156 // Add backedge + invocation counter | |
2157 add( Rtmp, Rtmp2, Rtmp ); | |
2158 | |
2159 // Note that this macro must leave backedge_count + invocation_count in Rtmp! | |
2160 } | |
2161 | |
2162 #ifndef CC_INTERP | |
2163 void InterpreterMacroAssembler::test_backedge_count_for_osr( Register backedge_count, | |
2164 Register branch_bcp, | |
2165 Register Rtmp ) { | |
2166 Label did_not_overflow; | |
2167 Label overflow_with_error; | |
2168 assert_different_registers(backedge_count, Rtmp, branch_bcp); | |
2169 assert(UseOnStackReplacement,"Must UseOnStackReplacement to test_backedge_count_for_osr"); | |
2170 | |
727 | 2171 AddressLiteral limit(&InvocationCounter::InterpreterBackwardBranchLimit); |
0 | 2172 load_contents(limit, Rtmp); |
3839 | 2173 cmp_and_br_short(backedge_count, Rtmp, Assembler::lessUnsigned, Assembler::pt, did_not_overflow); |
0 | 2174 |
2175 // When ProfileInterpreter is on, the backedge_count comes from the | |
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2176 // MethodData*, which value does not get reset on the call to |
0 | 2177 // frequency_counter_overflow(). To avoid excessive calls to the overflow |
2178 // routine while the method is being compiled, add a second test to make sure | |
2179 // the overflow function is called only once every overflow_frequency. | |
2180 if (ProfileInterpreter) { | |
2181 const int overflow_frequency = 1024; | |
2182 andcc(backedge_count, overflow_frequency-1, Rtmp); | |
2183 brx(Assembler::notZero, false, Assembler::pt, did_not_overflow); | |
2184 delayed()->nop(); | |
2185 } | |
2186 | |
2187 // overflow in loop, pass branch bytecode | |
2188 set(6,Rtmp); | |
2189 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), branch_bcp, Rtmp); | |
2190 | |
2191 // Was an OSR adapter generated? | |
2192 // O0 = osr nmethod | |
3839 | 2193 br_null_short(O0, Assembler::pn, overflow_with_error); |
0 | 2194 |
2195 // Has the nmethod been invalidated already? | |
2196 ld(O0, nmethod::entry_bci_offset(), O2); | |
3839 | 2197 cmp_and_br_short(O2, InvalidOSREntryBci, Assembler::equal, Assembler::pn, overflow_with_error); |
0 | 2198 |
2199 // migrate the interpreter frame off of the stack | |
2200 | |
2201 mov(G2_thread, L7); | |
2202 // save nmethod | |
2203 mov(O0, L6); | |
2204 set_last_Java_frame(SP, noreg); | |
2205 call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin), L7); | |
2206 reset_last_Java_frame(); | |
2207 mov(L7, G2_thread); | |
2208 | |
2209 // move OSR nmethod to I1 | |
2210 mov(L6, I1); | |
2211 | |
2212 // OSR buffer to I0 | |
2213 mov(O0, I0); | |
2214 | |
2215 // remove the interpreter frame | |
2216 restore(I5_savedSP, 0, SP); | |
2217 | |
2218 // Jump to the osr code. | |
2219 ld_ptr(O1, nmethod::osr_entry_point_offset(), O2); | |
2220 jmp(O2, G0); | |
2221 delayed()->nop(); | |
2222 | |
2223 bind(overflow_with_error); | |
2224 | |
2225 bind(did_not_overflow); | |
2226 } | |
2227 | |
2228 | |
2229 | |
2230 void InterpreterMacroAssembler::interp_verify_oop(Register reg, TosState state, const char * file, int line) { | |
2231 if (state == atos) { MacroAssembler::_verify_oop(reg, "broken oop ", file, line); } | |
2232 } | |
2233 | |
2234 | |
2235 // local helper function for the verify_oop_or_return_address macro | |
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2236 static bool verify_return_address(Method* m, int bci) { |
0 | 2237 #ifndef PRODUCT |
2238 address pc = (address)(m->constMethod()) | |
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2239 + in_bytes(ConstMethod::codes_offset()) + bci; |
0 | 2240 // assume it is a valid return address if it is inside m and is preceded by a jsr |
2241 if (!m->contains(pc)) return false; | |
2242 address jsr_pc; | |
2243 jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr); | |
2244 if (*jsr_pc == Bytecodes::_jsr && jsr_pc >= m->code_base()) return true; | |
2245 jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr_w); | |
2246 if (*jsr_pc == Bytecodes::_jsr_w && jsr_pc >= m->code_base()) return true; | |
2247 #endif // PRODUCT | |
2248 return false; | |
2249 } | |
2250 | |
2251 | |
2252 void InterpreterMacroAssembler::verify_oop_or_return_address(Register reg, Register Rtmp) { | |
2253 if (!VerifyOops) return; | |
2254 // the VM documentation for the astore[_wide] bytecode allows | |
2255 // the TOS to be not only an oop but also a return address | |
2256 Label test; | |
2257 Label skip; | |
2258 // See if it is an address (in the current method): | |
2259 | |
2260 mov(reg, Rtmp); | |
2261 const int log2_bytecode_size_limit = 16; | |
2262 srl(Rtmp, log2_bytecode_size_limit, Rtmp); | |
3839 | 2263 br_notnull_short( Rtmp, pt, test ); |
0 | 2264 |
2265 // %%% should use call_VM_leaf here? | |
2266 save_frame_and_mov(0, Lmethod, O0, reg, O1); | |
2267 save_thread(L7_thread_cache); | |
2268 call(CAST_FROM_FN_PTR(address,verify_return_address), relocInfo::none); | |
2269 delayed()->nop(); | |
2270 restore_thread(L7_thread_cache); | |
2271 br_notnull( O0, false, pt, skip ); | |
2272 delayed()->restore(); | |
2273 | |
2274 // Perform a more elaborate out-of-line call | |
2275 // Not an address; verify it: | |
2276 bind(test); | |
2277 verify_oop(reg); | |
2278 bind(skip); | |
2279 } | |
2280 | |
2281 | |
2282 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
2283 if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth); | |
2284 } | |
2285 #endif /* CC_INTERP */ | |
2286 | |
2287 // Inline assembly for: | |
2288 // | |
2289 // if (thread is in interp_only_mode) { | |
2290 // InterpreterRuntime::post_method_entry(); | |
2291 // } | |
2292 // if (DTraceMethodProbes) { | |
605 | 2293 // SharedRuntime::dtrace_method_entry(method, receiver); |
0 | 2294 // } |
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2295 // if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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2296 // SharedRuntime::rc_trace_method_entry(method, receiver); |
0 | 2297 // } |
2298 | |
2299 void InterpreterMacroAssembler::notify_method_entry() { | |
2300 | |
2301 // C++ interpreter only uses this for native methods. | |
2302 | |
2303 // Whenever JVMTI puts a thread in interp_only_mode, method | |
2304 // entry/exit events are sent for that thread to track stack | |
2305 // depth. If it is possible to enter interp_only_mode we add | |
2306 // the code to check if the event should be sent. | |
2307 if (JvmtiExport::can_post_interpreter_events()) { | |
2308 Label L; | |
2309 Register temp_reg = O5; | |
727 | 2310 const Address interp_only(G2_thread, JavaThread::interp_only_mode_offset()); |
0 | 2311 ld(interp_only, temp_reg); |
3839 | 2312 cmp_and_br_short(temp_reg, 0, equal, pt, L); |
0 | 2313 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry)); |
2314 bind(L); | |
2315 } | |
2316 | |
2317 { | |
2318 Register temp_reg = O5; | |
2319 SkipIfEqual skip_if(this, temp_reg, &DTraceMethodProbes, zero); | |
2320 call_VM_leaf(noreg, | |
2321 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), | |
2322 G2_thread, Lmethod); | |
2323 } | |
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2324 |
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2325 // RedefineClasses() tracing support for obsolete method entry |
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2326 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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2327 call_VM_leaf(noreg, |
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2328 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), |
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2329 G2_thread, Lmethod); |
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2330 } |
0 | 2331 } |
2332 | |
2333 | |
2334 // Inline assembly for: | |
2335 // | |
2336 // if (thread is in interp_only_mode) { | |
2337 // // save result | |
2338 // InterpreterRuntime::post_method_exit(); | |
2339 // // restore result | |
2340 // } | |
2341 // if (DTraceMethodProbes) { | |
2342 // SharedRuntime::dtrace_method_exit(thread, method); | |
2343 // } | |
2344 // | |
2345 // Native methods have their result stored in d_tmp and l_tmp | |
2346 // Java methods have their result stored in the expression stack | |
2347 | |
2348 void InterpreterMacroAssembler::notify_method_exit(bool is_native_method, | |
2349 TosState state, | |
2350 NotifyMethodExitMode mode) { | |
2351 // C++ interpreter only uses this for native methods. | |
2352 | |
2353 // Whenever JVMTI puts a thread in interp_only_mode, method | |
2354 // entry/exit events are sent for that thread to track stack | |
2355 // depth. If it is possible to enter interp_only_mode we add | |
2356 // the code to check if the event should be sent. | |
2357 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { | |
2358 Label L; | |
2359 Register temp_reg = O5; | |
727 | 2360 const Address interp_only(G2_thread, JavaThread::interp_only_mode_offset()); |
0 | 2361 ld(interp_only, temp_reg); |
3839 | 2362 cmp_and_br_short(temp_reg, 0, equal, pt, L); |
0 | 2363 |
2364 // Note: frame::interpreter_frame_result has a dependency on how the | |
2365 // method result is saved across the call to post_method_exit. For | |
2366 // native methods it assumes the result registers are saved to | |
2367 // l_scratch and d_scratch. If this changes then the interpreter_frame_result | |
2368 // implementation will need to be updated too. | |
2369 | |
2370 save_return_value(state, is_native_method); | |
2371 call_VM(noreg, | |
2372 CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit)); | |
2373 restore_return_value(state, is_native_method); | |
2374 bind(L); | |
2375 } | |
2376 | |
2377 { | |
2378 Register temp_reg = O5; | |
2379 // Dtrace notification | |
2380 SkipIfEqual skip_if(this, temp_reg, &DTraceMethodProbes, zero); | |
2381 save_return_value(state, is_native_method); | |
2382 call_VM_leaf( | |
2383 noreg, | |
2384 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), | |
2385 G2_thread, Lmethod); | |
2386 restore_return_value(state, is_native_method); | |
2387 } | |
2388 } | |
2389 | |
2390 void InterpreterMacroAssembler::save_return_value(TosState state, bool is_native_call) { | |
2391 #ifdef CC_INTERP | |
2392 // result potentially in O0/O1: save it across calls | |
2393 stf(FloatRegisterImpl::D, F0, STATE(_native_fresult)); | |
2394 #ifdef _LP64 | |
2395 stx(O0, STATE(_native_lresult)); | |
2396 #else | |
2397 std(O0, STATE(_native_lresult)); | |
2398 #endif | |
2399 #else // CC_INTERP | |
2400 if (is_native_call) { | |
2401 stf(FloatRegisterImpl::D, F0, d_tmp); | |
2402 #ifdef _LP64 | |
2403 stx(O0, l_tmp); | |
2404 #else | |
2405 std(O0, l_tmp); | |
2406 #endif | |
2407 } else { | |
2408 push(state); | |
2409 } | |
2410 #endif // CC_INTERP | |
2411 } | |
2412 | |
2413 void InterpreterMacroAssembler::restore_return_value( TosState state, bool is_native_call) { | |
2414 #ifdef CC_INTERP | |
2415 ldf(FloatRegisterImpl::D, STATE(_native_fresult), F0); | |
2416 #ifdef _LP64 | |
2417 ldx(STATE(_native_lresult), O0); | |
2418 #else | |
2419 ldd(STATE(_native_lresult), O0); | |
2420 #endif | |
2421 #else // CC_INTERP | |
2422 if (is_native_call) { | |
2423 ldf(FloatRegisterImpl::D, d_tmp, F0); | |
2424 #ifdef _LP64 | |
2425 ldx(l_tmp, O0); | |
2426 #else | |
2427 ldd(l_tmp, O0); | |
2428 #endif | |
2429 } else { | |
2430 pop(state); | |
2431 } | |
2432 #endif // CC_INTERP | |
2433 } | |
1783 | 2434 |
2435 // Jump if ((*counter_addr += increment) & mask) satisfies the condition. | |
2436 void InterpreterMacroAssembler::increment_mask_and_jump(Address counter_addr, | |
2437 int increment, int mask, | |
2438 Register scratch1, Register scratch2, | |
2439 Condition cond, Label *where) { | |
2440 ld(counter_addr, scratch1); | |
2441 add(scratch1, increment, scratch1); | |
2442 if (is_simm13(mask)) { | |
2443 andcc(scratch1, mask, G0); | |
2444 } else { | |
2445 set(mask, scratch2); | |
2446 andcc(scratch1, scratch2, G0); | |
2447 } | |
2448 br(cond, false, Assembler::pn, *where); | |
2449 delayed()->st(scratch1, counter_addr); | |
2450 } |