Mercurial > hg > graal-compiler
annotate src/cpu/sparc/vm/interp_masm_sparc.cpp @ 1156:136ac23d6ded
Merge
author | jrose |
---|---|
date | Fri, 08 Jan 2010 15:17:42 -0800 |
parents | 6918603297f7 |
children | 87684f1a88b5 |
rev | line source |
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0 | 1 /* |
727 | 2 * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_interp_masm_sparc.cpp.incl" | |
27 | |
28 #ifndef CC_INTERP | |
29 #ifndef FAST_DISPATCH | |
30 #define FAST_DISPATCH 1 | |
31 #endif | |
32 #undef FAST_DISPATCH | |
33 | |
34 // Implementation of InterpreterMacroAssembler | |
35 | |
36 // This file specializes the assember with interpreter-specific macros | |
37 | |
727 | 38 const Address InterpreterMacroAssembler::l_tmp(FP, (frame::interpreter_frame_l_scratch_fp_offset * wordSize) + STACK_BIAS); |
39 const Address InterpreterMacroAssembler::d_tmp(FP, (frame::interpreter_frame_d_scratch_fp_offset * wordSize) + STACK_BIAS); | |
0 | 40 |
41 #else // CC_INTERP | |
42 #ifndef STATE | |
43 #define STATE(field_name) Lstate, in_bytes(byte_offset_of(BytecodeInterpreter, field_name)) | |
44 #endif // STATE | |
45 | |
46 #endif // CC_INTERP | |
47 | |
48 void InterpreterMacroAssembler::compute_extra_locals_size_in_bytes(Register args_size, Register locals_size, Register delta) { | |
49 // Note: this algorithm is also used by C1's OSR entry sequence. | |
50 // Any changes should also be applied to CodeEmitter::emit_osr_entry(). | |
51 assert_different_registers(args_size, locals_size); | |
52 // max_locals*2 for TAGS. Assumes that args_size has already been adjusted. | |
53 if (TaggedStackInterpreter) sll(locals_size, 1, locals_size); | |
54 subcc(locals_size, args_size, delta);// extra space for non-arguments locals in words | |
55 // Use br/mov combination because it works on both V8 and V9 and is | |
56 // faster. | |
57 Label skip_move; | |
58 br(Assembler::negative, true, Assembler::pt, skip_move); | |
59 delayed()->mov(G0, delta); | |
60 bind(skip_move); | |
61 round_to(delta, WordsPerLong); // make multiple of 2 (SP must be 2-word aligned) | |
62 sll(delta, LogBytesPerWord, delta); // extra space for locals in bytes | |
63 } | |
64 | |
65 #ifndef CC_INTERP | |
66 | |
67 // Dispatch code executed in the prolog of a bytecode which does not do it's | |
68 // own dispatch. The dispatch address is computed and placed in IdispatchAddress | |
69 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int bcp_incr) { | |
70 assert_not_delayed(); | |
71 #ifdef FAST_DISPATCH | |
72 // FAST_DISPATCH and ProfileInterpreter are mutually exclusive since | |
73 // they both use I2. | |
74 assert(!ProfileInterpreter, "FAST_DISPATCH and +ProfileInterpreter are mutually exclusive"); | |
75 ldub(Lbcp, bcp_incr, Lbyte_code); // load next bytecode | |
76 add(Lbyte_code, Interpreter::distance_from_dispatch_table(state), Lbyte_code); | |
77 // add offset to correct dispatch table | |
78 sll(Lbyte_code, LogBytesPerWord, Lbyte_code); // multiply by wordSize | |
79 ld_ptr(IdispatchTables, Lbyte_code, IdispatchAddress);// get entry addr | |
80 #else | |
727 | 81 ldub( Lbcp, bcp_incr, Lbyte_code); // load next bytecode |
0 | 82 // dispatch table to use |
727 | 83 AddressLiteral tbl(Interpreter::dispatch_table(state)); |
84 sll(Lbyte_code, LogBytesPerWord, Lbyte_code); // multiply by wordSize | |
85 set(tbl, G3_scratch); // compute addr of table | |
86 ld_ptr(G3_scratch, Lbyte_code, IdispatchAddress); // get entry addr | |
0 | 87 #endif |
88 } | |
89 | |
90 | |
91 // Dispatch code executed in the epilog of a bytecode which does not do it's | |
92 // own dispatch. The dispatch address in IdispatchAddress is used for the | |
93 // dispatch. | |
94 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int bcp_incr) { | |
95 assert_not_delayed(); | |
96 verify_FPU(1, state); | |
97 interp_verify_oop(Otos_i, state, __FILE__, __LINE__); | |
98 jmp( IdispatchAddress, 0 ); | |
99 if (bcp_incr != 0) delayed()->inc(Lbcp, bcp_incr); | |
100 else delayed()->nop(); | |
101 } | |
102 | |
103 | |
104 void InterpreterMacroAssembler::dispatch_next(TosState state, int bcp_incr) { | |
105 // %%%% consider branching to a single shared dispatch stub (for each bcp_incr) | |
106 assert_not_delayed(); | |
107 ldub( Lbcp, bcp_incr, Lbyte_code); // load next bytecode | |
108 dispatch_Lbyte_code(state, Interpreter::dispatch_table(state), bcp_incr); | |
109 } | |
110 | |
111 | |
112 void InterpreterMacroAssembler::dispatch_next_noverify_oop(TosState state, int bcp_incr) { | |
113 // %%%% consider branching to a single shared dispatch stub (for each bcp_incr) | |
114 assert_not_delayed(); | |
115 ldub( Lbcp, bcp_incr, Lbyte_code); // load next bytecode | |
116 dispatch_Lbyte_code(state, Interpreter::dispatch_table(state), bcp_incr, false); | |
117 } | |
118 | |
119 | |
120 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
121 // load current bytecode | |
122 assert_not_delayed(); | |
123 ldub( Lbcp, 0, Lbyte_code); // load next bytecode | |
124 dispatch_base(state, table); | |
125 } | |
126 | |
127 | |
128 void InterpreterMacroAssembler::call_VM_leaf_base( | |
129 Register java_thread, | |
130 address entry_point, | |
131 int number_of_arguments | |
132 ) { | |
133 if (!java_thread->is_valid()) | |
134 java_thread = L7_thread_cache; | |
135 // super call | |
136 MacroAssembler::call_VM_leaf_base(java_thread, entry_point, number_of_arguments); | |
137 } | |
138 | |
139 | |
140 void InterpreterMacroAssembler::call_VM_base( | |
141 Register oop_result, | |
142 Register java_thread, | |
143 Register last_java_sp, | |
144 address entry_point, | |
145 int number_of_arguments, | |
146 bool check_exception | |
147 ) { | |
148 if (!java_thread->is_valid()) | |
149 java_thread = L7_thread_cache; | |
150 // See class ThreadInVMfromInterpreter, which assumes that the interpreter | |
151 // takes responsibility for setting its own thread-state on call-out. | |
152 // However, ThreadInVMfromInterpreter resets the state to "in_Java". | |
153 | |
154 //save_bcp(); // save bcp | |
155 MacroAssembler::call_VM_base(oop_result, java_thread, last_java_sp, entry_point, number_of_arguments, check_exception); | |
156 //restore_bcp(); // restore bcp | |
157 //restore_locals(); // restore locals pointer | |
158 } | |
159 | |
160 | |
161 void InterpreterMacroAssembler::check_and_handle_popframe(Register scratch_reg) { | |
162 if (JvmtiExport::can_pop_frame()) { | |
163 Label L; | |
164 | |
165 // Check the "pending popframe condition" flag in the current thread | |
727 | 166 ld(G2_thread, JavaThread::popframe_condition_offset(), scratch_reg); |
0 | 167 |
168 // Initiate popframe handling only if it is not already being processed. If the flag | |
169 // has the popframe_processing bit set, it means that this code is called *during* popframe | |
170 // handling - we don't want to reenter. | |
171 btst(JavaThread::popframe_pending_bit, scratch_reg); | |
172 br(zero, false, pt, L); | |
173 delayed()->nop(); | |
174 btst(JavaThread::popframe_processing_bit, scratch_reg); | |
175 br(notZero, false, pt, L); | |
176 delayed()->nop(); | |
177 | |
178 // Call Interpreter::remove_activation_preserving_args_entry() to get the | |
179 // address of the same-named entrypoint in the generated interpreter code. | |
180 call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry)); | |
181 | |
182 // Jump to Interpreter::_remove_activation_preserving_args_entry | |
183 jmpl(O0, G0, G0); | |
184 delayed()->nop(); | |
185 bind(L); | |
186 } | |
187 } | |
188 | |
189 | |
190 void InterpreterMacroAssembler::load_earlyret_value(TosState state) { | |
191 Register thr_state = G4_scratch; | |
727 | 192 ld_ptr(G2_thread, JavaThread::jvmti_thread_state_offset(), thr_state); |
193 const Address tos_addr(thr_state, JvmtiThreadState::earlyret_tos_offset()); | |
194 const Address oop_addr(thr_state, JvmtiThreadState::earlyret_oop_offset()); | |
195 const Address val_addr(thr_state, JvmtiThreadState::earlyret_value_offset()); | |
0 | 196 switch (state) { |
197 case ltos: ld_long(val_addr, Otos_l); break; | |
198 case atos: ld_ptr(oop_addr, Otos_l); | |
199 st_ptr(G0, oop_addr); break; | |
200 case btos: // fall through | |
201 case ctos: // fall through | |
202 case stos: // fall through | |
203 case itos: ld(val_addr, Otos_l1); break; | |
204 case ftos: ldf(FloatRegisterImpl::S, val_addr, Ftos_f); break; | |
205 case dtos: ldf(FloatRegisterImpl::D, val_addr, Ftos_d); break; | |
206 case vtos: /* nothing to do */ break; | |
207 default : ShouldNotReachHere(); | |
208 } | |
209 // Clean up tos value in the jvmti thread state | |
210 or3(G0, ilgl, G3_scratch); | |
211 stw(G3_scratch, tos_addr); | |
212 st_long(G0, val_addr); | |
213 interp_verify_oop(Otos_i, state, __FILE__, __LINE__); | |
214 } | |
215 | |
216 | |
217 void InterpreterMacroAssembler::check_and_handle_earlyret(Register scratch_reg) { | |
218 if (JvmtiExport::can_force_early_return()) { | |
219 Label L; | |
220 Register thr_state = G3_scratch; | |
727 | 221 ld_ptr(G2_thread, JavaThread::jvmti_thread_state_offset(), thr_state); |
0 | 222 tst(thr_state); |
223 br(zero, false, pt, L); // if (thread->jvmti_thread_state() == NULL) exit; | |
224 delayed()->nop(); | |
225 | |
226 // Initiate earlyret handling only if it is not already being processed. | |
227 // If the flag has the earlyret_processing bit set, it means that this code | |
228 // is called *during* earlyret handling - we don't want to reenter. | |
727 | 229 ld(thr_state, JvmtiThreadState::earlyret_state_offset(), G4_scratch); |
0 | 230 cmp(G4_scratch, JvmtiThreadState::earlyret_pending); |
231 br(Assembler::notEqual, false, pt, L); | |
232 delayed()->nop(); | |
233 | |
234 // Call Interpreter::remove_activation_early_entry() to get the address of the | |
235 // same-named entrypoint in the generated interpreter code | |
727 | 236 ld(thr_state, JvmtiThreadState::earlyret_tos_offset(), Otos_l1); |
0 | 237 call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), Otos_l1); |
238 | |
239 // Jump to Interpreter::_remove_activation_early_entry | |
240 jmpl(O0, G0, G0); | |
241 delayed()->nop(); | |
242 bind(L); | |
243 } | |
244 } | |
245 | |
246 | |
247 void InterpreterMacroAssembler::super_call_VM_leaf(Register thread_cache, address entry_point, Register arg_1) { | |
248 mov(arg_1, O0); | |
249 MacroAssembler::call_VM_leaf_base(thread_cache, entry_point, 1); | |
250 } | |
251 #endif /* CC_INTERP */ | |
252 | |
253 | |
254 #ifndef CC_INTERP | |
255 | |
256 void InterpreterMacroAssembler::dispatch_base(TosState state, address* table) { | |
257 assert_not_delayed(); | |
258 dispatch_Lbyte_code(state, table); | |
259 } | |
260 | |
261 | |
262 void InterpreterMacroAssembler::dispatch_normal(TosState state) { | |
263 dispatch_base(state, Interpreter::normal_table(state)); | |
264 } | |
265 | |
266 | |
267 void InterpreterMacroAssembler::dispatch_only(TosState state) { | |
268 dispatch_base(state, Interpreter::dispatch_table(state)); | |
269 } | |
270 | |
271 | |
272 // common code to dispatch and dispatch_only | |
273 // dispatch value in Lbyte_code and increment Lbcp | |
274 | |
275 void InterpreterMacroAssembler::dispatch_Lbyte_code(TosState state, address* table, int bcp_incr, bool verify) { | |
276 verify_FPU(1, state); | |
277 // %%%%% maybe implement +VerifyActivationFrameSize here | |
278 //verify_thread(); //too slow; we will just verify on method entry & exit | |
279 if (verify) interp_verify_oop(Otos_i, state, __FILE__, __LINE__); | |
280 #ifdef FAST_DISPATCH | |
281 if (table == Interpreter::dispatch_table(state)) { | |
282 // use IdispatchTables | |
283 add(Lbyte_code, Interpreter::distance_from_dispatch_table(state), Lbyte_code); | |
284 // add offset to correct dispatch table | |
285 sll(Lbyte_code, LogBytesPerWord, Lbyte_code); // multiply by wordSize | |
286 ld_ptr(IdispatchTables, Lbyte_code, G3_scratch); // get entry addr | |
287 } else { | |
288 #endif | |
289 // dispatch table to use | |
727 | 290 AddressLiteral tbl(table); |
0 | 291 sll(Lbyte_code, LogBytesPerWord, Lbyte_code); // multiply by wordSize |
727 | 292 set(tbl, G3_scratch); // compute addr of table |
0 | 293 ld_ptr(G3_scratch, Lbyte_code, G3_scratch); // get entry addr |
294 #ifdef FAST_DISPATCH | |
295 } | |
296 #endif | |
297 jmp( G3_scratch, 0 ); | |
298 if (bcp_incr != 0) delayed()->inc(Lbcp, bcp_incr); | |
299 else delayed()->nop(); | |
300 } | |
301 | |
302 | |
303 // Helpers for expression stack | |
304 | |
305 // Longs and doubles are Category 2 computational types in the | |
306 // JVM specification (section 3.11.1) and take 2 expression stack or | |
307 // local slots. | |
308 // Aligning them on 32 bit with tagged stacks is hard because the code generated | |
309 // for the dup* bytecodes depends on what types are already on the stack. | |
310 // If the types are split into the two stack/local slots, that is much easier | |
311 // (and we can use 0 for non-reference tags). | |
312 | |
313 // Known good alignment in _LP64 but unknown otherwise | |
314 void InterpreterMacroAssembler::load_unaligned_double(Register r1, int offset, FloatRegister d) { | |
315 assert_not_delayed(); | |
316 | |
317 #ifdef _LP64 | |
318 ldf(FloatRegisterImpl::D, r1, offset, d); | |
319 #else | |
320 ldf(FloatRegisterImpl::S, r1, offset, d); | |
321 ldf(FloatRegisterImpl::S, r1, offset + Interpreter::stackElementSize(), d->successor()); | |
322 #endif | |
323 } | |
324 | |
325 // Known good alignment in _LP64 but unknown otherwise | |
326 void InterpreterMacroAssembler::store_unaligned_double(FloatRegister d, Register r1, int offset) { | |
327 assert_not_delayed(); | |
328 | |
329 #ifdef _LP64 | |
330 stf(FloatRegisterImpl::D, d, r1, offset); | |
331 // store something more useful here | |
332 debug_only(stx(G0, r1, offset+Interpreter::stackElementSize());) | |
333 #else | |
334 stf(FloatRegisterImpl::S, d, r1, offset); | |
335 stf(FloatRegisterImpl::S, d->successor(), r1, offset + Interpreter::stackElementSize()); | |
336 #endif | |
337 } | |
338 | |
339 | |
340 // Known good alignment in _LP64 but unknown otherwise | |
341 void InterpreterMacroAssembler::load_unaligned_long(Register r1, int offset, Register rd) { | |
342 assert_not_delayed(); | |
343 #ifdef _LP64 | |
344 ldx(r1, offset, rd); | |
345 #else | |
346 ld(r1, offset, rd); | |
347 ld(r1, offset + Interpreter::stackElementSize(), rd->successor()); | |
348 #endif | |
349 } | |
350 | |
351 // Known good alignment in _LP64 but unknown otherwise | |
352 void InterpreterMacroAssembler::store_unaligned_long(Register l, Register r1, int offset) { | |
353 assert_not_delayed(); | |
354 | |
355 #ifdef _LP64 | |
356 stx(l, r1, offset); | |
357 // store something more useful here | |
358 debug_only(stx(G0, r1, offset+Interpreter::stackElementSize());) | |
359 #else | |
360 st(l, r1, offset); | |
361 st(l->successor(), r1, offset + Interpreter::stackElementSize()); | |
362 #endif | |
363 } | |
364 | |
365 #ifdef ASSERT | |
366 void InterpreterMacroAssembler::verify_stack_tag(frame::Tag t, | |
367 Register r, | |
368 Register scratch) { | |
369 if (TaggedStackInterpreter) { | |
370 Label ok, long_ok; | |
371 ld_ptr(Lesp, Interpreter::expr_tag_offset_in_bytes(0), r); | |
372 if (t == frame::TagCategory2) { | |
373 cmp(r, G0); | |
374 brx(Assembler::equal, false, Assembler::pt, long_ok); | |
375 delayed()->ld_ptr(Lesp, Interpreter::expr_tag_offset_in_bytes(1), r); | |
376 stop("stack long/double tag value bad"); | |
377 bind(long_ok); | |
378 cmp(r, G0); | |
379 } else if (t == frame::TagValue) { | |
380 cmp(r, G0); | |
381 } else { | |
382 assert_different_registers(r, scratch); | |
383 mov(t, scratch); | |
384 cmp(r, scratch); | |
385 } | |
386 brx(Assembler::equal, false, Assembler::pt, ok); | |
387 delayed()->nop(); | |
388 // Also compare if the stack value is zero, then the tag might | |
389 // not have been set coming from deopt. | |
390 ld_ptr(Lesp, Interpreter::expr_offset_in_bytes(0), r); | |
391 cmp(r, G0); | |
392 brx(Assembler::equal, false, Assembler::pt, ok); | |
393 delayed()->nop(); | |
394 stop("Stack tag value is bad"); | |
395 bind(ok); | |
396 } | |
397 } | |
398 #endif // ASSERT | |
399 | |
400 void InterpreterMacroAssembler::pop_i(Register r) { | |
401 assert_not_delayed(); | |
402 // Uses destination register r for scratch | |
403 debug_only(verify_stack_tag(frame::TagValue, r)); | |
404 ld(Lesp, Interpreter::expr_offset_in_bytes(0), r); | |
405 inc(Lesp, Interpreter::stackElementSize()); | |
406 debug_only(verify_esp(Lesp)); | |
407 } | |
408 | |
409 void InterpreterMacroAssembler::pop_ptr(Register r, Register scratch) { | |
410 assert_not_delayed(); | |
411 // Uses destination register r for scratch | |
412 debug_only(verify_stack_tag(frame::TagReference, r, scratch)); | |
413 ld_ptr(Lesp, Interpreter::expr_offset_in_bytes(0), r); | |
414 inc(Lesp, Interpreter::stackElementSize()); | |
415 debug_only(verify_esp(Lesp)); | |
416 } | |
417 | |
418 void InterpreterMacroAssembler::pop_l(Register r) { | |
419 assert_not_delayed(); | |
420 // Uses destination register r for scratch | |
421 debug_only(verify_stack_tag(frame::TagCategory2, r)); | |
422 load_unaligned_long(Lesp, Interpreter::expr_offset_in_bytes(0), r); | |
423 inc(Lesp, 2*Interpreter::stackElementSize()); | |
424 debug_only(verify_esp(Lesp)); | |
425 } | |
426 | |
427 | |
428 void InterpreterMacroAssembler::pop_f(FloatRegister f, Register scratch) { | |
429 assert_not_delayed(); | |
430 debug_only(verify_stack_tag(frame::TagValue, scratch)); | |
431 ldf(FloatRegisterImpl::S, Lesp, Interpreter::expr_offset_in_bytes(0), f); | |
432 inc(Lesp, Interpreter::stackElementSize()); | |
433 debug_only(verify_esp(Lesp)); | |
434 } | |
435 | |
436 | |
437 void InterpreterMacroAssembler::pop_d(FloatRegister f, Register scratch) { | |
438 assert_not_delayed(); | |
439 debug_only(verify_stack_tag(frame::TagCategory2, scratch)); | |
440 load_unaligned_double(Lesp, Interpreter::expr_offset_in_bytes(0), f); | |
441 inc(Lesp, 2*Interpreter::stackElementSize()); | |
442 debug_only(verify_esp(Lesp)); | |
443 } | |
444 | |
445 | |
446 // (Note use register first, then decrement so dec can be done during store stall) | |
447 void InterpreterMacroAssembler::tag_stack(Register r) { | |
448 if (TaggedStackInterpreter) { | |
449 st_ptr(r, Lesp, Interpreter::tag_offset_in_bytes()); | |
450 } | |
451 } | |
452 | |
453 void InterpreterMacroAssembler::tag_stack(frame::Tag t, Register r) { | |
454 if (TaggedStackInterpreter) { | |
455 assert (frame::TagValue == 0, "TagValue must be zero"); | |
456 if (t == frame::TagValue) { | |
457 st_ptr(G0, Lesp, Interpreter::tag_offset_in_bytes()); | |
458 } else if (t == frame::TagCategory2) { | |
459 st_ptr(G0, Lesp, Interpreter::tag_offset_in_bytes()); | |
460 // Tag next slot down too | |
461 st_ptr(G0, Lesp, -Interpreter::stackElementSize() + Interpreter::tag_offset_in_bytes()); | |
462 } else { | |
463 assert_different_registers(r, O3); | |
464 mov(t, O3); | |
465 st_ptr(O3, Lesp, Interpreter::tag_offset_in_bytes()); | |
466 } | |
467 } | |
468 } | |
469 | |
470 void InterpreterMacroAssembler::push_i(Register r) { | |
471 assert_not_delayed(); | |
472 debug_only(verify_esp(Lesp)); | |
473 tag_stack(frame::TagValue, r); | |
474 st( r, Lesp, Interpreter::value_offset_in_bytes()); | |
475 dec( Lesp, Interpreter::stackElementSize()); | |
476 } | |
477 | |
478 void InterpreterMacroAssembler::push_ptr(Register r) { | |
479 assert_not_delayed(); | |
480 tag_stack(frame::TagReference, r); | |
481 st_ptr( r, Lesp, Interpreter::value_offset_in_bytes()); | |
482 dec( Lesp, Interpreter::stackElementSize()); | |
483 } | |
484 | |
485 void InterpreterMacroAssembler::push_ptr(Register r, Register tag) { | |
486 assert_not_delayed(); | |
487 tag_stack(tag); | |
488 st_ptr(r, Lesp, Interpreter::value_offset_in_bytes()); | |
489 dec( Lesp, Interpreter::stackElementSize()); | |
490 } | |
491 | |
492 // remember: our convention for longs in SPARC is: | |
493 // O0 (Otos_l1) has high-order part in first word, | |
494 // O1 (Otos_l2) has low-order part in second word | |
495 | |
496 void InterpreterMacroAssembler::push_l(Register r) { | |
497 assert_not_delayed(); | |
498 debug_only(verify_esp(Lesp)); | |
499 tag_stack(frame::TagCategory2, r); | |
500 // Longs are in stored in memory-correct order, even if unaligned. | |
501 // and may be separated by stack tags. | |
502 int offset = -Interpreter::stackElementSize() + Interpreter::value_offset_in_bytes(); | |
503 store_unaligned_long(r, Lesp, offset); | |
504 dec(Lesp, 2 * Interpreter::stackElementSize()); | |
505 } | |
506 | |
507 | |
508 void InterpreterMacroAssembler::push_f(FloatRegister f) { | |
509 assert_not_delayed(); | |
510 debug_only(verify_esp(Lesp)); | |
511 tag_stack(frame::TagValue, Otos_i); | |
512 stf(FloatRegisterImpl::S, f, Lesp, Interpreter::value_offset_in_bytes()); | |
513 dec(Lesp, Interpreter::stackElementSize()); | |
514 } | |
515 | |
516 | |
517 void InterpreterMacroAssembler::push_d(FloatRegister d) { | |
518 assert_not_delayed(); | |
519 debug_only(verify_esp(Lesp)); | |
520 tag_stack(frame::TagCategory2, Otos_i); | |
521 // Longs are in stored in memory-correct order, even if unaligned. | |
522 // and may be separated by stack tags. | |
523 int offset = -Interpreter::stackElementSize() + Interpreter::value_offset_in_bytes(); | |
524 store_unaligned_double(d, Lesp, offset); | |
525 dec(Lesp, 2 * Interpreter::stackElementSize()); | |
526 } | |
527 | |
528 | |
529 void InterpreterMacroAssembler::push(TosState state) { | |
530 interp_verify_oop(Otos_i, state, __FILE__, __LINE__); | |
531 switch (state) { | |
532 case atos: push_ptr(); break; | |
533 case btos: push_i(); break; | |
534 case ctos: | |
535 case stos: push_i(); break; | |
536 case itos: push_i(); break; | |
537 case ltos: push_l(); break; | |
538 case ftos: push_f(); break; | |
539 case dtos: push_d(); break; | |
540 case vtos: /* nothing to do */ break; | |
541 default : ShouldNotReachHere(); | |
542 } | |
543 } | |
544 | |
545 | |
546 void InterpreterMacroAssembler::pop(TosState state) { | |
547 switch (state) { | |
548 case atos: pop_ptr(); break; | |
549 case btos: pop_i(); break; | |
550 case ctos: | |
551 case stos: pop_i(); break; | |
552 case itos: pop_i(); break; | |
553 case ltos: pop_l(); break; | |
554 case ftos: pop_f(); break; | |
555 case dtos: pop_d(); break; | |
556 case vtos: /* nothing to do */ break; | |
557 default : ShouldNotReachHere(); | |
558 } | |
559 interp_verify_oop(Otos_i, state, __FILE__, __LINE__); | |
560 } | |
561 | |
562 | |
563 // Tagged stack helpers for swap and dup | |
564 void InterpreterMacroAssembler::load_ptr_and_tag(int n, Register val, | |
565 Register tag) { | |
566 ld_ptr(Lesp, Interpreter::expr_offset_in_bytes(n), val); | |
567 if (TaggedStackInterpreter) { | |
568 ld_ptr(Lesp, Interpreter::expr_tag_offset_in_bytes(n), tag); | |
569 } | |
570 } | |
571 void InterpreterMacroAssembler::store_ptr_and_tag(int n, Register val, | |
572 Register tag) { | |
573 st_ptr(val, Lesp, Interpreter::expr_offset_in_bytes(n)); | |
574 if (TaggedStackInterpreter) { | |
575 st_ptr(tag, Lesp, Interpreter::expr_tag_offset_in_bytes(n)); | |
576 } | |
577 } | |
578 | |
579 | |
580 void InterpreterMacroAssembler::load_receiver(Register param_count, | |
581 Register recv) { | |
582 | |
583 sll(param_count, Interpreter::logStackElementSize(), param_count); | |
584 if (TaggedStackInterpreter) { | |
585 add(param_count, Interpreter::value_offset_in_bytes(), param_count); // get obj address | |
586 } | |
587 ld_ptr(Lesp, param_count, recv); // gets receiver Oop | |
588 } | |
589 | |
590 void InterpreterMacroAssembler::empty_expression_stack() { | |
591 // Reset Lesp. | |
592 sub( Lmonitors, wordSize, Lesp ); | |
593 | |
594 // Reset SP by subtracting more space from Lesp. | |
595 Label done; | |
596 verify_oop(Lmethod); | |
727 | 597 assert(G4_scratch != Gframe_size, "Only you can prevent register aliasing!"); |
0 | 598 |
599 // A native does not need to do this, since its callee does not change SP. | |
727 | 600 ld(Lmethod, methodOopDesc::access_flags_offset(), Gframe_size); // Load access flags. |
0 | 601 btst(JVM_ACC_NATIVE, Gframe_size); |
602 br(Assembler::notZero, false, Assembler::pt, done); | |
603 delayed()->nop(); | |
604 | |
605 // Compute max expression stack+register save area | |
727 | 606 lduh(Lmethod, in_bytes(methodOopDesc::max_stack_offset()), Gframe_size); // Load max stack. |
0 | 607 if (TaggedStackInterpreter) sll ( Gframe_size, 1, Gframe_size); // max_stack * 2 for TAGS |
608 add( Gframe_size, frame::memory_parameter_word_sp_offset, Gframe_size ); | |
609 | |
610 // | |
611 // now set up a stack frame with the size computed above | |
612 // | |
613 //round_to( Gframe_size, WordsPerLong ); // -- moved down to the "and" below | |
614 sll( Gframe_size, LogBytesPerWord, Gframe_size ); | |
615 sub( Lesp, Gframe_size, Gframe_size ); | |
616 and3( Gframe_size, -(2 * wordSize), Gframe_size ); // align SP (downwards) to an 8/16-byte boundary | |
617 debug_only(verify_sp(Gframe_size, G4_scratch)); | |
618 #ifdef _LP64 | |
619 sub(Gframe_size, STACK_BIAS, Gframe_size ); | |
620 #endif | |
621 mov(Gframe_size, SP); | |
622 | |
623 bind(done); | |
624 } | |
625 | |
626 | |
627 #ifdef ASSERT | |
628 void InterpreterMacroAssembler::verify_sp(Register Rsp, Register Rtemp) { | |
629 Label Bad, OK; | |
630 | |
631 // Saved SP must be aligned. | |
632 #ifdef _LP64 | |
633 btst(2*BytesPerWord-1, Rsp); | |
634 #else | |
635 btst(LongAlignmentMask, Rsp); | |
636 #endif | |
637 br(Assembler::notZero, false, Assembler::pn, Bad); | |
638 delayed()->nop(); | |
639 | |
640 // Saved SP, plus register window size, must not be above FP. | |
641 add(Rsp, frame::register_save_words * wordSize, Rtemp); | |
642 #ifdef _LP64 | |
643 sub(Rtemp, STACK_BIAS, Rtemp); // Bias Rtemp before cmp to FP | |
644 #endif | |
645 cmp(Rtemp, FP); | |
646 brx(Assembler::greaterUnsigned, false, Assembler::pn, Bad); | |
647 delayed()->nop(); | |
648 | |
649 // Saved SP must not be ridiculously below current SP. | |
650 size_t maxstack = MAX2(JavaThread::stack_size_at_create(), (size_t) 4*K*K); | |
651 set(maxstack, Rtemp); | |
652 sub(SP, Rtemp, Rtemp); | |
653 #ifdef _LP64 | |
654 add(Rtemp, STACK_BIAS, Rtemp); // Unbias Rtemp before cmp to Rsp | |
655 #endif | |
656 cmp(Rsp, Rtemp); | |
657 brx(Assembler::lessUnsigned, false, Assembler::pn, Bad); | |
658 delayed()->nop(); | |
659 | |
660 br(Assembler::always, false, Assembler::pn, OK); | |
661 delayed()->nop(); | |
662 | |
663 bind(Bad); | |
664 stop("on return to interpreted call, restored SP is corrupted"); | |
665 | |
666 bind(OK); | |
667 } | |
668 | |
669 | |
670 void InterpreterMacroAssembler::verify_esp(Register Resp) { | |
671 // about to read or write Resp[0] | |
672 // make sure it is not in the monitors or the register save area | |
673 Label OK1, OK2; | |
674 | |
675 cmp(Resp, Lmonitors); | |
676 brx(Assembler::lessUnsigned, true, Assembler::pt, OK1); | |
677 delayed()->sub(Resp, frame::memory_parameter_word_sp_offset * wordSize, Resp); | |
678 stop("too many pops: Lesp points into monitor area"); | |
679 bind(OK1); | |
680 #ifdef _LP64 | |
681 sub(Resp, STACK_BIAS, Resp); | |
682 #endif | |
683 cmp(Resp, SP); | |
684 brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, OK2); | |
685 delayed()->add(Resp, STACK_BIAS + frame::memory_parameter_word_sp_offset * wordSize, Resp); | |
686 stop("too many pushes: Lesp points into register window"); | |
687 bind(OK2); | |
688 } | |
689 #endif // ASSERT | |
690 | |
691 // Load compiled (i2c) or interpreter entry when calling from interpreted and | |
692 // do the call. Centralized so that all interpreter calls will do the same actions. | |
693 // If jvmti single stepping is on for a thread we must not call compiled code. | |
694 void InterpreterMacroAssembler::call_from_interpreter(Register target, Register scratch, Register Rret) { | |
695 | |
696 // Assume we want to go compiled if available | |
697 | |
698 ld_ptr(G5_method, in_bytes(methodOopDesc::from_interpreted_offset()), target); | |
699 | |
700 if (JvmtiExport::can_post_interpreter_events()) { | |
701 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
702 // compiled code in threads for which the event is enabled. Check here for | |
703 // interp_only_mode if these events CAN be enabled. | |
704 verify_thread(); | |
705 Label skip_compiled_code; | |
706 | |
727 | 707 const Address interp_only(G2_thread, JavaThread::interp_only_mode_offset()); |
0 | 708 ld(interp_only, scratch); |
709 tst(scratch); | |
710 br(Assembler::notZero, true, Assembler::pn, skip_compiled_code); | |
711 delayed()->ld_ptr(G5_method, in_bytes(methodOopDesc::interpreter_entry_offset()), target); | |
712 bind(skip_compiled_code); | |
713 } | |
714 | |
715 // the i2c_adapters need methodOop in G5_method (right? %%%) | |
716 // do the call | |
717 #ifdef ASSERT | |
718 { | |
719 Label ok; | |
720 br_notnull(target, false, Assembler::pt, ok); | |
721 delayed()->nop(); | |
722 stop("null entry point"); | |
723 bind(ok); | |
724 } | |
725 #endif // ASSERT | |
726 | |
727 // Adjust Rret first so Llast_SP can be same as Rret | |
728 add(Rret, -frame::pc_return_offset, O7); | |
729 add(Lesp, BytesPerWord, Gargs); // setup parameter pointer | |
730 // Record SP so we can remove any stack space allocated by adapter transition | |
731 jmp(target, 0); | |
732 delayed()->mov(SP, Llast_SP); | |
733 } | |
734 | |
735 void InterpreterMacroAssembler::if_cmp(Condition cc, bool ptr_compare) { | |
736 assert_not_delayed(); | |
737 | |
738 Label not_taken; | |
739 if (ptr_compare) brx(cc, false, Assembler::pn, not_taken); | |
740 else br (cc, false, Assembler::pn, not_taken); | |
741 delayed()->nop(); | |
742 | |
743 TemplateTable::branch(false,false); | |
744 | |
745 bind(not_taken); | |
746 | |
747 profile_not_taken_branch(G3_scratch); | |
748 } | |
749 | |
750 | |
751 void InterpreterMacroAssembler::get_2_byte_integer_at_bcp( | |
752 int bcp_offset, | |
753 Register Rtmp, | |
754 Register Rdst, | |
755 signedOrNot is_signed, | |
756 setCCOrNot should_set_CC ) { | |
757 assert(Rtmp != Rdst, "need separate temp register"); | |
758 assert_not_delayed(); | |
759 switch (is_signed) { | |
760 default: ShouldNotReachHere(); | |
761 | |
762 case Signed: ldsb( Lbcp, bcp_offset, Rdst ); break; // high byte | |
763 case Unsigned: ldub( Lbcp, bcp_offset, Rdst ); break; // high byte | |
764 } | |
765 ldub( Lbcp, bcp_offset + 1, Rtmp ); // low byte | |
766 sll( Rdst, BitsPerByte, Rdst); | |
767 switch (should_set_CC ) { | |
768 default: ShouldNotReachHere(); | |
769 | |
770 case set_CC: orcc( Rdst, Rtmp, Rdst ); break; | |
771 case dont_set_CC: or3( Rdst, Rtmp, Rdst ); break; | |
772 } | |
773 } | |
774 | |
775 | |
776 void InterpreterMacroAssembler::get_4_byte_integer_at_bcp( | |
777 int bcp_offset, | |
778 Register Rtmp, | |
779 Register Rdst, | |
780 setCCOrNot should_set_CC ) { | |
781 assert(Rtmp != Rdst, "need separate temp register"); | |
782 assert_not_delayed(); | |
783 add( Lbcp, bcp_offset, Rtmp); | |
784 andcc( Rtmp, 3, G0); | |
785 Label aligned; | |
786 switch (should_set_CC ) { | |
787 default: ShouldNotReachHere(); | |
788 | |
789 case set_CC: break; | |
790 case dont_set_CC: break; | |
791 } | |
792 | |
793 br(Assembler::zero, true, Assembler::pn, aligned); | |
794 #ifdef _LP64 | |
795 delayed()->ldsw(Rtmp, 0, Rdst); | |
796 #else | |
797 delayed()->ld(Rtmp, 0, Rdst); | |
798 #endif | |
799 | |
800 ldub(Lbcp, bcp_offset + 3, Rdst); | |
801 ldub(Lbcp, bcp_offset + 2, Rtmp); sll(Rtmp, 8, Rtmp); or3(Rtmp, Rdst, Rdst); | |
802 ldub(Lbcp, bcp_offset + 1, Rtmp); sll(Rtmp, 16, Rtmp); or3(Rtmp, Rdst, Rdst); | |
803 #ifdef _LP64 | |
804 ldsb(Lbcp, bcp_offset + 0, Rtmp); sll(Rtmp, 24, Rtmp); | |
805 #else | |
806 // Unsigned load is faster than signed on some implementations | |
807 ldub(Lbcp, bcp_offset + 0, Rtmp); sll(Rtmp, 24, Rtmp); | |
808 #endif | |
809 or3(Rtmp, Rdst, Rdst ); | |
810 | |
811 bind(aligned); | |
812 if (should_set_CC == set_CC) tst(Rdst); | |
813 } | |
814 | |
815 | |
816 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register tmp, int bcp_offset) { | |
817 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); | |
818 assert_different_registers(cache, tmp); | |
819 assert_not_delayed(); | |
820 get_2_byte_integer_at_bcp(bcp_offset, cache, tmp, Unsigned); | |
821 // convert from field index to ConstantPoolCacheEntry index | |
822 // and from word index to byte offset | |
823 sll(tmp, exact_log2(in_words(ConstantPoolCacheEntry::size()) * BytesPerWord), tmp); | |
824 add(LcpoolCache, tmp, cache); | |
825 } | |
826 | |
827 | |
828 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset) { | |
829 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); | |
830 assert_different_registers(cache, tmp); | |
831 assert_not_delayed(); | |
832 get_2_byte_integer_at_bcp(bcp_offset, cache, tmp, Unsigned); | |
833 // convert from field index to ConstantPoolCacheEntry index | |
834 // and from word index to byte offset | |
835 sll(tmp, exact_log2(in_words(ConstantPoolCacheEntry::size()) * BytesPerWord), tmp); | |
836 // skip past the header | |
837 add(tmp, in_bytes(constantPoolCacheOopDesc::base_offset()), tmp); | |
838 // construct pointer to cache entry | |
839 add(LcpoolCache, tmp, cache); | |
840 } | |
841 | |
842 | |
843 // Generate a subtype check: branch to ok_is_subtype if sub_klass is | |
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844 // a subtype of super_klass. Blows registers Rsuper_klass, Rsub_klass, tmp1, tmp2. |
0 | 845 void InterpreterMacroAssembler::gen_subtype_check(Register Rsub_klass, |
846 Register Rsuper_klass, | |
847 Register Rtmp1, | |
848 Register Rtmp2, | |
849 Register Rtmp3, | |
850 Label &ok_is_subtype ) { | |
644
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851 Label not_subtype; |
0 | 852 |
853 // Profile the not-null value's klass. | |
854 profile_typecheck(Rsub_klass, Rtmp1); | |
855 | |
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856 check_klass_subtype_fast_path(Rsub_klass, Rsuper_klass, |
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857 Rtmp1, Rtmp2, |
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858 &ok_is_subtype, ¬_subtype, NULL); |
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859 |
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860 check_klass_subtype_slow_path(Rsub_klass, Rsuper_klass, |
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861 Rtmp1, Rtmp2, Rtmp3, /*hack:*/ noreg, |
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862 &ok_is_subtype, NULL); |
0 | 863 |
864 bind(not_subtype); | |
865 profile_typecheck_failed(Rtmp1); | |
866 } | |
867 | |
868 // Separate these two to allow for delay slot in middle | |
869 // These are used to do a test and full jump to exception-throwing code. | |
870 | |
871 // %%%%% Could possibly reoptimize this by testing to see if could use | |
872 // a single conditional branch (i.e. if span is small enough. | |
873 // If you go that route, than get rid of the split and give up | |
874 // on the delay-slot hack. | |
875 | |
876 void InterpreterMacroAssembler::throw_if_not_1_icc( Condition ok_condition, | |
877 Label& ok ) { | |
878 assert_not_delayed(); | |
879 br(ok_condition, true, pt, ok); | |
880 // DELAY SLOT | |
881 } | |
882 | |
883 void InterpreterMacroAssembler::throw_if_not_1_xcc( Condition ok_condition, | |
884 Label& ok ) { | |
885 assert_not_delayed(); | |
886 bp( ok_condition, true, Assembler::xcc, pt, ok); | |
887 // DELAY SLOT | |
888 } | |
889 | |
890 void InterpreterMacroAssembler::throw_if_not_1_x( Condition ok_condition, | |
891 Label& ok ) { | |
892 assert_not_delayed(); | |
893 brx(ok_condition, true, pt, ok); | |
894 // DELAY SLOT | |
895 } | |
896 | |
897 void InterpreterMacroAssembler::throw_if_not_2( address throw_entry_point, | |
898 Register Rscratch, | |
899 Label& ok ) { | |
900 assert(throw_entry_point != NULL, "entry point must be generated by now"); | |
727 | 901 AddressLiteral dest(throw_entry_point); |
902 jump_to(dest, Rscratch); | |
0 | 903 delayed()->nop(); |
904 bind(ok); | |
905 } | |
906 | |
907 | |
908 // And if you cannot use the delay slot, here is a shorthand: | |
909 | |
910 void InterpreterMacroAssembler::throw_if_not_icc( Condition ok_condition, | |
911 address throw_entry_point, | |
912 Register Rscratch ) { | |
913 Label ok; | |
914 if (ok_condition != never) { | |
915 throw_if_not_1_icc( ok_condition, ok); | |
916 delayed()->nop(); | |
917 } | |
918 throw_if_not_2( throw_entry_point, Rscratch, ok); | |
919 } | |
920 void InterpreterMacroAssembler::throw_if_not_xcc( Condition ok_condition, | |
921 address throw_entry_point, | |
922 Register Rscratch ) { | |
923 Label ok; | |
924 if (ok_condition != never) { | |
925 throw_if_not_1_xcc( ok_condition, ok); | |
926 delayed()->nop(); | |
927 } | |
928 throw_if_not_2( throw_entry_point, Rscratch, ok); | |
929 } | |
930 void InterpreterMacroAssembler::throw_if_not_x( Condition ok_condition, | |
931 address throw_entry_point, | |
932 Register Rscratch ) { | |
933 Label ok; | |
934 if (ok_condition != never) { | |
935 throw_if_not_1_x( ok_condition, ok); | |
936 delayed()->nop(); | |
937 } | |
938 throw_if_not_2( throw_entry_point, Rscratch, ok); | |
939 } | |
940 | |
941 // Check that index is in range for array, then shift index by index_shift, and put arrayOop + shifted_index into res | |
942 // Note: res is still shy of address by array offset into object. | |
943 | |
944 void InterpreterMacroAssembler::index_check_without_pop(Register array, Register index, int index_shift, Register tmp, Register res) { | |
945 assert_not_delayed(); | |
946 | |
947 verify_oop(array); | |
948 #ifdef _LP64 | |
949 // sign extend since tos (index) can be a 32bit value | |
950 sra(index, G0, index); | |
951 #endif // _LP64 | |
952 | |
953 // check array | |
954 Label ptr_ok; | |
955 tst(array); | |
956 throw_if_not_1_x( notZero, ptr_ok ); | |
957 delayed()->ld( array, arrayOopDesc::length_offset_in_bytes(), tmp ); // check index | |
958 throw_if_not_2( Interpreter::_throw_NullPointerException_entry, G3_scratch, ptr_ok); | |
959 | |
960 Label index_ok; | |
961 cmp(index, tmp); | |
962 throw_if_not_1_icc( lessUnsigned, index_ok ); | |
963 if (index_shift > 0) delayed()->sll(index, index_shift, index); | |
964 else delayed()->add(array, index, res); // addr - const offset in index | |
965 // convention: move aberrant index into G3_scratch for exception message | |
966 mov(index, G3_scratch); | |
967 throw_if_not_2( Interpreter::_throw_ArrayIndexOutOfBoundsException_entry, G4_scratch, index_ok); | |
968 | |
969 // add offset if didn't do it in delay slot | |
970 if (index_shift > 0) add(array, index, res); // addr - const offset in index | |
971 } | |
972 | |
973 | |
974 void InterpreterMacroAssembler::index_check(Register array, Register index, int index_shift, Register tmp, Register res) { | |
975 assert_not_delayed(); | |
976 | |
977 // pop array | |
978 pop_ptr(array); | |
979 | |
980 // check array | |
981 index_check_without_pop(array, index, index_shift, tmp, res); | |
982 } | |
983 | |
984 | |
985 void InterpreterMacroAssembler::get_constant_pool(Register Rdst) { | |
986 ld_ptr(Lmethod, in_bytes(methodOopDesc::constants_offset()), Rdst); | |
987 } | |
988 | |
989 | |
990 void InterpreterMacroAssembler::get_constant_pool_cache(Register Rdst) { | |
991 get_constant_pool(Rdst); | |
992 ld_ptr(Rdst, constantPoolOopDesc::cache_offset_in_bytes(), Rdst); | |
993 } | |
994 | |
995 | |
996 void InterpreterMacroAssembler::get_cpool_and_tags(Register Rcpool, Register Rtags) { | |
997 get_constant_pool(Rcpool); | |
998 ld_ptr(Rcpool, constantPoolOopDesc::tags_offset_in_bytes(), Rtags); | |
999 } | |
1000 | |
1001 | |
1002 // unlock if synchronized method | |
1003 // | |
1004 // Unlock the receiver if this is a synchronized method. | |
1005 // Unlock any Java monitors from syncronized blocks. | |
1006 // | |
1007 // If there are locked Java monitors | |
1008 // If throw_monitor_exception | |
1009 // throws IllegalMonitorStateException | |
1010 // Else if install_monitor_exception | |
1011 // installs IllegalMonitorStateException | |
1012 // Else | |
1013 // no error processing | |
1014 void InterpreterMacroAssembler::unlock_if_synchronized_method(TosState state, | |
1015 bool throw_monitor_exception, | |
1016 bool install_monitor_exception) { | |
1017 Label unlocked, unlock, no_unlock; | |
1018 | |
1019 // get the value of _do_not_unlock_if_synchronized into G1_scratch | |
727 | 1020 const Address do_not_unlock_if_synchronized(G2_thread, |
1021 JavaThread::do_not_unlock_if_synchronized_offset()); | |
0 | 1022 ldbool(do_not_unlock_if_synchronized, G1_scratch); |
1023 stbool(G0, do_not_unlock_if_synchronized); // reset the flag | |
1024 | |
1025 // check if synchronized method | |
727 | 1026 const Address access_flags(Lmethod, methodOopDesc::access_flags_offset()); |
0 | 1027 interp_verify_oop(Otos_i, state, __FILE__, __LINE__); |
1028 push(state); // save tos | |
727 | 1029 ld(access_flags, G3_scratch); // Load access flags. |
0 | 1030 btst(JVM_ACC_SYNCHRONIZED, G3_scratch); |
727 | 1031 br(zero, false, pt, unlocked); |
0 | 1032 delayed()->nop(); |
1033 | |
1034 // Don't unlock anything if the _do_not_unlock_if_synchronized flag | |
1035 // is set. | |
1036 tstbool(G1_scratch); | |
1037 br(Assembler::notZero, false, pn, no_unlock); | |
1038 delayed()->nop(); | |
1039 | |
1040 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
1041 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
1042 | |
1043 //Intel: if (throw_monitor_exception) ... else ... | |
1044 // Entry already unlocked, need to throw exception | |
1045 //... | |
1046 | |
1047 // pass top-most monitor elem | |
1048 add( top_most_monitor(), O1 ); | |
1049 | |
1050 ld_ptr(O1, BasicObjectLock::obj_offset_in_bytes(), G3_scratch); | |
1051 br_notnull(G3_scratch, false, pt, unlock); | |
1052 delayed()->nop(); | |
1053 | |
1054 if (throw_monitor_exception) { | |
1055 // Entry already unlocked need to throw an exception | |
1056 MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
1057 should_not_reach_here(); | |
1058 } else { | |
1059 // Monitor already unlocked during a stack unroll. | |
1060 // If requested, install an illegal_monitor_state_exception. | |
1061 // Continue with stack unrolling. | |
1062 if (install_monitor_exception) { | |
1063 MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
1064 } | |
1065 ba(false, unlocked); | |
1066 delayed()->nop(); | |
1067 } | |
1068 | |
1069 bind(unlock); | |
1070 | |
1071 unlock_object(O1); | |
1072 | |
1073 bind(unlocked); | |
1074 | |
1075 // I0, I1: Might contain return value | |
1076 | |
1077 // Check that all monitors are unlocked | |
1078 { Label loop, exception, entry, restart; | |
1079 | |
1080 Register Rmptr = O0; | |
1081 Register Rtemp = O1; | |
1082 Register Rlimit = Lmonitors; | |
1083 const jint delta = frame::interpreter_frame_monitor_size() * wordSize; | |
1084 assert( (delta & LongAlignmentMask) == 0, | |
1085 "sizeof BasicObjectLock must be even number of doublewords"); | |
1086 | |
1087 #ifdef ASSERT | |
1088 add(top_most_monitor(), Rmptr, delta); | |
1089 { Label L; | |
1090 // ensure that Rmptr starts out above (or at) Rlimit | |
1091 cmp(Rmptr, Rlimit); | |
1092 brx(Assembler::greaterEqualUnsigned, false, pn, L); | |
1093 delayed()->nop(); | |
1094 stop("monitor stack has negative size"); | |
1095 bind(L); | |
1096 } | |
1097 #endif | |
1098 bind(restart); | |
1099 ba(false, entry); | |
1100 delayed()-> | |
1101 add(top_most_monitor(), Rmptr, delta); // points to current entry, starting with bottom-most entry | |
1102 | |
1103 // Entry is still locked, need to throw exception | |
1104 bind(exception); | |
1105 if (throw_monitor_exception) { | |
1106 MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
1107 should_not_reach_here(); | |
1108 } else { | |
1109 // Stack unrolling. Unlock object and if requested, install illegal_monitor_exception. | |
1110 // Unlock does not block, so don't have to worry about the frame | |
1111 unlock_object(Rmptr); | |
1112 if (install_monitor_exception) { | |
1113 MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
1114 } | |
1115 ba(false, restart); | |
1116 delayed()->nop(); | |
1117 } | |
1118 | |
1119 bind(loop); | |
1120 cmp(Rtemp, G0); // check if current entry is used | |
1121 brx(Assembler::notEqual, false, pn, exception); | |
1122 delayed()-> | |
1123 dec(Rmptr, delta); // otherwise advance to next entry | |
1124 #ifdef ASSERT | |
1125 { Label L; | |
1126 // ensure that Rmptr has not somehow stepped below Rlimit | |
1127 cmp(Rmptr, Rlimit); | |
1128 brx(Assembler::greaterEqualUnsigned, false, pn, L); | |
1129 delayed()->nop(); | |
1130 stop("ran off the end of the monitor stack"); | |
1131 bind(L); | |
1132 } | |
1133 #endif | |
1134 bind(entry); | |
1135 cmp(Rmptr, Rlimit); // check if bottom reached | |
1136 brx(Assembler::notEqual, true, pn, loop); // if not at bottom then check this entry | |
1137 delayed()-> | |
1138 ld_ptr(Rmptr, BasicObjectLock::obj_offset_in_bytes() - delta, Rtemp); | |
1139 } | |
1140 | |
1141 bind(no_unlock); | |
1142 pop(state); | |
1143 interp_verify_oop(Otos_i, state, __FILE__, __LINE__); | |
1144 } | |
1145 | |
1146 | |
1147 // remove activation | |
1148 // | |
1149 // Unlock the receiver if this is a synchronized method. | |
1150 // Unlock any Java monitors from syncronized blocks. | |
1151 // Remove the activation from the stack. | |
1152 // | |
1153 // If there are locked Java monitors | |
1154 // If throw_monitor_exception | |
1155 // throws IllegalMonitorStateException | |
1156 // Else if install_monitor_exception | |
1157 // installs IllegalMonitorStateException | |
1158 // Else | |
1159 // no error processing | |
1160 void InterpreterMacroAssembler::remove_activation(TosState state, | |
1161 bool throw_monitor_exception, | |
1162 bool install_monitor_exception) { | |
1163 | |
1164 unlock_if_synchronized_method(state, throw_monitor_exception, install_monitor_exception); | |
1165 | |
1166 // save result (push state before jvmti call and pop it afterwards) and notify jvmti | |
1167 notify_method_exit(false, state, NotifyJVMTI); | |
1168 | |
1169 interp_verify_oop(Otos_i, state, __FILE__, __LINE__); | |
1170 verify_oop(Lmethod); | |
1171 verify_thread(); | |
1172 | |
1173 // return tos | |
1174 assert(Otos_l1 == Otos_i, "adjust code below"); | |
1175 switch (state) { | |
1176 #ifdef _LP64 | |
1177 case ltos: mov(Otos_l, Otos_l->after_save()); break; // O0 -> I0 | |
1178 #else | |
1179 case ltos: mov(Otos_l2, Otos_l2->after_save()); // fall through // O1 -> I1 | |
1180 #endif | |
1181 case btos: // fall through | |
1182 case ctos: | |
1183 case stos: // fall through | |
1184 case atos: // fall through | |
1185 case itos: mov(Otos_l1, Otos_l1->after_save()); break; // O0 -> I0 | |
1186 case ftos: // fall through | |
1187 case dtos: // fall through | |
1188 case vtos: /* nothing to do */ break; | |
1189 default : ShouldNotReachHere(); | |
1190 } | |
1191 | |
1192 #if defined(COMPILER2) && !defined(_LP64) | |
1193 if (state == ltos) { | |
1194 // C2 expects long results in G1 we can't tell if we're returning to interpreted | |
1195 // or compiled so just be safe use G1 and O0/O1 | |
1196 | |
1197 // Shift bits into high (msb) of G1 | |
1198 sllx(Otos_l1->after_save(), 32, G1); | |
1199 // Zero extend low bits | |
1200 srl (Otos_l2->after_save(), 0, Otos_l2->after_save()); | |
1201 or3 (Otos_l2->after_save(), G1, G1); | |
1202 } | |
1203 #endif /* COMPILER2 */ | |
1204 | |
1205 } | |
1206 #endif /* CC_INTERP */ | |
1207 | |
1208 | |
1209 // Lock object | |
1210 // | |
1211 // Argument - lock_reg points to the BasicObjectLock to be used for locking, | |
1212 // it must be initialized with the object to lock | |
1213 void InterpreterMacroAssembler::lock_object(Register lock_reg, Register Object) { | |
1214 if (UseHeavyMonitors) { | |
1215 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
1216 } | |
1217 else { | |
1218 Register obj_reg = Object; | |
1219 Register mark_reg = G4_scratch; | |
1220 Register temp_reg = G1_scratch; | |
727 | 1221 Address lock_addr(lock_reg, BasicObjectLock::lock_offset_in_bytes()); |
1222 Address mark_addr(obj_reg, oopDesc::mark_offset_in_bytes()); | |
0 | 1223 Label done; |
1224 | |
1225 Label slow_case; | |
1226 | |
1227 assert_different_registers(lock_reg, obj_reg, mark_reg, temp_reg); | |
1228 | |
1229 // load markOop from object into mark_reg | |
1230 ld_ptr(mark_addr, mark_reg); | |
1231 | |
1232 if (UseBiasedLocking) { | |
1233 biased_locking_enter(obj_reg, mark_reg, temp_reg, done, &slow_case); | |
1234 } | |
1235 | |
1236 // get the address of basicLock on stack that will be stored in the object | |
1237 // we need a temporary register here as we do not want to clobber lock_reg | |
1238 // (cas clobbers the destination register) | |
1239 mov(lock_reg, temp_reg); | |
1240 // set mark reg to be (markOop of object | UNLOCK_VALUE) | |
1241 or3(mark_reg, markOopDesc::unlocked_value, mark_reg); | |
1242 // initialize the box (Must happen before we update the object mark!) | |
1243 st_ptr(mark_reg, lock_addr, BasicLock::displaced_header_offset_in_bytes()); | |
1244 // compare and exchange object_addr, markOop | 1, stack address of basicLock | |
1245 assert(mark_addr.disp() == 0, "cas must take a zero displacement"); | |
1246 casx_under_lock(mark_addr.base(), mark_reg, temp_reg, | |
1247 (address)StubRoutines::Sparc::atomic_memory_operation_lock_addr()); | |
1248 | |
1249 // if the compare and exchange succeeded we are done (we saw an unlocked object) | |
1250 cmp(mark_reg, temp_reg); | |
1251 brx(Assembler::equal, true, Assembler::pt, done); | |
1252 delayed()->nop(); | |
1253 | |
1254 // We did not see an unlocked object so try the fast recursive case | |
1255 | |
1256 // Check if owner is self by comparing the value in the markOop of object | |
1257 // with the stack pointer | |
1258 sub(temp_reg, SP, temp_reg); | |
1259 #ifdef _LP64 | |
1260 sub(temp_reg, STACK_BIAS, temp_reg); | |
1261 #endif | |
1262 assert(os::vm_page_size() > 0xfff, "page size too small - change the constant"); | |
1263 | |
1264 // Composite "andcc" test: | |
1265 // (a) %sp -vs- markword proximity check, and, | |
1266 // (b) verify mark word LSBs == 0 (Stack-locked). | |
1267 // | |
1268 // FFFFF003/FFFFFFFFFFFF003 is (markOopDesc::lock_mask_in_place | -os::vm_page_size()) | |
1269 // Note that the page size used for %sp proximity testing is arbitrary and is | |
1270 // unrelated to the actual MMU page size. We use a 'logical' page size of | |
1271 // 4096 bytes. F..FFF003 is designed to fit conveniently in the SIMM13 immediate | |
1272 // field of the andcc instruction. | |
1273 andcc (temp_reg, 0xFFFFF003, G0) ; | |
1274 | |
1275 // if condition is true we are done and hence we can store 0 in the displaced | |
1276 // header indicating it is a recursive lock and be done | |
1277 brx(Assembler::zero, true, Assembler::pt, done); | |
1278 delayed()->st_ptr(G0, lock_addr, BasicLock::displaced_header_offset_in_bytes()); | |
1279 | |
1280 // none of the above fast optimizations worked so we have to get into the | |
1281 // slow case of monitor enter | |
1282 bind(slow_case); | |
1283 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
1284 | |
1285 bind(done); | |
1286 } | |
1287 } | |
1288 | |
1289 // Unlocks an object. Used in monitorexit bytecode and remove_activation. | |
1290 // | |
1291 // Argument - lock_reg points to the BasicObjectLock for lock | |
1292 // Throw IllegalMonitorException if object is not locked by current thread | |
1293 void InterpreterMacroAssembler::unlock_object(Register lock_reg) { | |
1294 if (UseHeavyMonitors) { | |
1295 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); | |
1296 } else { | |
1297 Register obj_reg = G3_scratch; | |
1298 Register mark_reg = G4_scratch; | |
1299 Register displaced_header_reg = G1_scratch; | |
727 | 1300 Address lockobj_addr(lock_reg, BasicObjectLock::obj_offset_in_bytes()); |
1301 Address mark_addr(obj_reg, oopDesc::mark_offset_in_bytes()); | |
0 | 1302 Label done; |
1303 | |
1304 if (UseBiasedLocking) { | |
1305 // load the object out of the BasicObjectLock | |
1306 ld_ptr(lockobj_addr, obj_reg); | |
1307 biased_locking_exit(mark_addr, mark_reg, done, true); | |
1308 st_ptr(G0, lockobj_addr); // free entry | |
1309 } | |
1310 | |
1311 // Test first if we are in the fast recursive case | |
727 | 1312 Address lock_addr(lock_reg, BasicObjectLock::lock_offset_in_bytes() + BasicLock::displaced_header_offset_in_bytes()); |
1313 ld_ptr(lock_addr, displaced_header_reg); | |
0 | 1314 br_null(displaced_header_reg, true, Assembler::pn, done); |
1315 delayed()->st_ptr(G0, lockobj_addr); // free entry | |
1316 | |
1317 // See if it is still a light weight lock, if so we just unlock | |
1318 // the object and we are done | |
1319 | |
1320 if (!UseBiasedLocking) { | |
1321 // load the object out of the BasicObjectLock | |
1322 ld_ptr(lockobj_addr, obj_reg); | |
1323 } | |
1324 | |
1325 // we have the displaced header in displaced_header_reg | |
1326 // we expect to see the stack address of the basicLock in case the | |
1327 // lock is still a light weight lock (lock_reg) | |
1328 assert(mark_addr.disp() == 0, "cas must take a zero displacement"); | |
1329 casx_under_lock(mark_addr.base(), lock_reg, displaced_header_reg, | |
1330 (address)StubRoutines::Sparc::atomic_memory_operation_lock_addr()); | |
1331 cmp(lock_reg, displaced_header_reg); | |
1332 brx(Assembler::equal, true, Assembler::pn, done); | |
1333 delayed()->st_ptr(G0, lockobj_addr); // free entry | |
1334 | |
1335 // The lock has been converted into a heavy lock and hence | |
1336 // we need to get into the slow case | |
1337 | |
1338 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); | |
1339 | |
1340 bind(done); | |
1341 } | |
1342 } | |
1343 | |
1344 #ifndef CC_INTERP | |
1345 | |
1346 // Get the method data pointer from the methodOop and set the | |
1347 // specified register to its value. | |
1348 | |
1349 void InterpreterMacroAssembler::set_method_data_pointer_offset(Register Roff) { | |
1350 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1351 Label get_continue; | |
1352 | |
1353 ld_ptr(Lmethod, in_bytes(methodOopDesc::method_data_offset()), ImethodDataPtr); | |
1354 test_method_data_pointer(get_continue); | |
1355 add(ImethodDataPtr, in_bytes(methodDataOopDesc::data_offset()), ImethodDataPtr); | |
1356 if (Roff != noreg) | |
1357 // Roff contains a method data index ("mdi"). It defaults to zero. | |
1358 add(ImethodDataPtr, Roff, ImethodDataPtr); | |
1359 bind(get_continue); | |
1360 } | |
1361 | |
1362 // Set the method data pointer for the current bcp. | |
1363 | |
1364 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
1365 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1366 Label zero_continue; | |
1367 | |
1368 // Test MDO to avoid the call if it is NULL. | |
727 | 1369 ld_ptr(Lmethod, methodOopDesc::method_data_offset(), ImethodDataPtr); |
0 | 1370 test_method_data_pointer(zero_continue); |
1371 call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), Lmethod, Lbcp); | |
1372 set_method_data_pointer_offset(O0); | |
1373 bind(zero_continue); | |
1374 } | |
1375 | |
1376 // Test ImethodDataPtr. If it is null, continue at the specified label | |
1377 | |
1378 void InterpreterMacroAssembler::test_method_data_pointer(Label& zero_continue) { | |
1379 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1380 #ifdef _LP64 | |
1381 bpr(Assembler::rc_z, false, Assembler::pn, ImethodDataPtr, zero_continue); | |
1382 #else | |
1383 tst(ImethodDataPtr); | |
1384 br(Assembler::zero, false, Assembler::pn, zero_continue); | |
1385 #endif | |
1386 delayed()->nop(); | |
1387 } | |
1388 | |
1389 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
1390 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1391 #ifdef ASSERT | |
1392 Label verify_continue; | |
1393 test_method_data_pointer(verify_continue); | |
1394 | |
1395 // If the mdp is valid, it will point to a DataLayout header which is | |
1396 // consistent with the bcp. The converse is highly probable also. | |
1397 lduh(ImethodDataPtr, in_bytes(DataLayout::bci_offset()), G3_scratch); | |
727 | 1398 ld_ptr(Lmethod, methodOopDesc::const_offset(), O5); |
0 | 1399 add(G3_scratch, in_bytes(constMethodOopDesc::codes_offset()), G3_scratch); |
1400 add(G3_scratch, O5, G3_scratch); | |
1401 cmp(Lbcp, G3_scratch); | |
1402 brx(Assembler::equal, false, Assembler::pt, verify_continue); | |
1403 | |
1404 Register temp_reg = O5; | |
1405 delayed()->mov(ImethodDataPtr, temp_reg); | |
1406 // %%% should use call_VM_leaf here? | |
1407 //call_VM_leaf(noreg, ..., Lmethod, Lbcp, ImethodDataPtr); | |
1408 save_frame_and_mov(sizeof(jdouble) / wordSize, Lmethod, O0, Lbcp, O1); | |
727 | 1409 Address d_save(FP, -sizeof(jdouble) + STACK_BIAS); |
0 | 1410 stf(FloatRegisterImpl::D, Ftos_d, d_save); |
1411 mov(temp_reg->after_save(), O2); | |
1412 save_thread(L7_thread_cache); | |
1413 call(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), relocInfo::none); | |
1414 delayed()->nop(); | |
1415 restore_thread(L7_thread_cache); | |
1416 ldf(FloatRegisterImpl::D, d_save, Ftos_d); | |
1417 restore(); | |
1418 bind(verify_continue); | |
1419 #endif // ASSERT | |
1420 } | |
1421 | |
1422 void InterpreterMacroAssembler::test_invocation_counter_for_mdp(Register invocation_count, | |
1423 Register cur_bcp, | |
1424 Register Rtmp, | |
1425 Label &profile_continue) { | |
1426 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1427 // Control will flow to "profile_continue" if the counter is less than the | |
1428 // limit or if we call profile_method() | |
1429 | |
1430 Label done; | |
1431 | |
1432 // if no method data exists, and the counter is high enough, make one | |
1433 #ifdef _LP64 | |
1434 bpr(Assembler::rc_nz, false, Assembler::pn, ImethodDataPtr, done); | |
1435 #else | |
1436 tst(ImethodDataPtr); | |
1437 br(Assembler::notZero, false, Assembler::pn, done); | |
1438 #endif | |
1439 | |
1440 // Test to see if we should create a method data oop | |
727 | 1441 AddressLiteral profile_limit((address) &InvocationCounter::InterpreterProfileLimit); |
0 | 1442 #ifdef _LP64 |
1443 delayed()->nop(); | |
727 | 1444 sethi(profile_limit, Rtmp); |
0 | 1445 #else |
727 | 1446 delayed()->sethi(profile_limit, Rtmp); |
0 | 1447 #endif |
727 | 1448 ld(Rtmp, profile_limit.low10(), Rtmp); |
0 | 1449 cmp(invocation_count, Rtmp); |
1450 br(Assembler::lessUnsigned, false, Assembler::pn, profile_continue); | |
1451 delayed()->nop(); | |
1452 | |
1453 // Build it now. | |
1454 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method), cur_bcp); | |
1455 set_method_data_pointer_offset(O0); | |
1456 ba(false, profile_continue); | |
1457 delayed()->nop(); | |
1458 bind(done); | |
1459 } | |
1460 | |
1461 // Store a value at some constant offset from the method data pointer. | |
1462 | |
1463 void InterpreterMacroAssembler::set_mdp_data_at(int constant, Register value) { | |
1464 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1465 st_ptr(value, ImethodDataPtr, constant); | |
1466 } | |
1467 | |
1468 void InterpreterMacroAssembler::increment_mdp_data_at(Address counter, | |
1469 Register bumped_count, | |
1470 bool decrement) { | |
1471 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1472 | |
1473 // Load the counter. | |
1474 ld_ptr(counter, bumped_count); | |
1475 | |
1476 if (decrement) { | |
1477 // Decrement the register. Set condition codes. | |
1478 subcc(bumped_count, DataLayout::counter_increment, bumped_count); | |
1479 | |
1480 // If the decrement causes the counter to overflow, stay negative | |
1481 Label L; | |
1482 brx(Assembler::negative, true, Assembler::pn, L); | |
1483 | |
1484 // Store the decremented counter, if it is still negative. | |
1485 delayed()->st_ptr(bumped_count, counter); | |
1486 bind(L); | |
1487 } else { | |
1488 // Increment the register. Set carry flag. | |
1489 addcc(bumped_count, DataLayout::counter_increment, bumped_count); | |
1490 | |
1491 // If the increment causes the counter to overflow, pull back by 1. | |
1492 assert(DataLayout::counter_increment == 1, "subc works"); | |
1493 subc(bumped_count, G0, bumped_count); | |
1494 | |
1495 // Store the incremented counter. | |
1496 st_ptr(bumped_count, counter); | |
1497 } | |
1498 } | |
1499 | |
1500 // Increment the value at some constant offset from the method data pointer. | |
1501 | |
1502 void InterpreterMacroAssembler::increment_mdp_data_at(int constant, | |
1503 Register bumped_count, | |
1504 bool decrement) { | |
1505 // Locate the counter at a fixed offset from the mdp: | |
727 | 1506 Address counter(ImethodDataPtr, constant); |
0 | 1507 increment_mdp_data_at(counter, bumped_count, decrement); |
1508 } | |
1509 | |
1510 // Increment the value at some non-fixed (reg + constant) offset from | |
1511 // the method data pointer. | |
1512 | |
1513 void InterpreterMacroAssembler::increment_mdp_data_at(Register reg, | |
1514 int constant, | |
1515 Register bumped_count, | |
1516 Register scratch2, | |
1517 bool decrement) { | |
1518 // Add the constant to reg to get the offset. | |
1519 add(ImethodDataPtr, reg, scratch2); | |
727 | 1520 Address counter(scratch2, constant); |
0 | 1521 increment_mdp_data_at(counter, bumped_count, decrement); |
1522 } | |
1523 | |
1524 // Set a flag value at the current method data pointer position. | |
1525 // Updates a single byte of the header, to avoid races with other header bits. | |
1526 | |
1527 void InterpreterMacroAssembler::set_mdp_flag_at(int flag_constant, | |
1528 Register scratch) { | |
1529 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1530 // Load the data header | |
1531 ldub(ImethodDataPtr, in_bytes(DataLayout::flags_offset()), scratch); | |
1532 | |
1533 // Set the flag | |
1534 or3(scratch, flag_constant, scratch); | |
1535 | |
1536 // Store the modified header. | |
1537 stb(scratch, ImethodDataPtr, in_bytes(DataLayout::flags_offset())); | |
1538 } | |
1539 | |
1540 // Test the location at some offset from the method data pointer. | |
1541 // If it is not equal to value, branch to the not_equal_continue Label. | |
1542 // Set condition codes to match the nullness of the loaded value. | |
1543 | |
1544 void InterpreterMacroAssembler::test_mdp_data_at(int offset, | |
1545 Register value, | |
1546 Label& not_equal_continue, | |
1547 Register scratch) { | |
1548 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1549 ld_ptr(ImethodDataPtr, offset, scratch); | |
1550 cmp(value, scratch); | |
1551 brx(Assembler::notEqual, false, Assembler::pn, not_equal_continue); | |
1552 delayed()->tst(scratch); | |
1553 } | |
1554 | |
1555 // Update the method data pointer by the displacement located at some fixed | |
1556 // offset from the method data pointer. | |
1557 | |
1558 void InterpreterMacroAssembler::update_mdp_by_offset(int offset_of_disp, | |
1559 Register scratch) { | |
1560 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1561 ld_ptr(ImethodDataPtr, offset_of_disp, scratch); | |
1562 add(ImethodDataPtr, scratch, ImethodDataPtr); | |
1563 } | |
1564 | |
1565 // Update the method data pointer by the displacement located at the | |
1566 // offset (reg + offset_of_disp). | |
1567 | |
1568 void InterpreterMacroAssembler::update_mdp_by_offset(Register reg, | |
1569 int offset_of_disp, | |
1570 Register scratch) { | |
1571 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1572 add(reg, offset_of_disp, scratch); | |
1573 ld_ptr(ImethodDataPtr, scratch, scratch); | |
1574 add(ImethodDataPtr, scratch, ImethodDataPtr); | |
1575 } | |
1576 | |
1577 // Update the method data pointer by a simple constant displacement. | |
1578 | |
1579 void InterpreterMacroAssembler::update_mdp_by_constant(int constant) { | |
1580 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1581 add(ImethodDataPtr, constant, ImethodDataPtr); | |
1582 } | |
1583 | |
1584 // Update the method data pointer for a _ret bytecode whose target | |
1585 // was not among our cached targets. | |
1586 | |
1587 void InterpreterMacroAssembler::update_mdp_for_ret(TosState state, | |
1588 Register return_bci) { | |
1589 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1590 push(state); | |
1591 st_ptr(return_bci, l_tmp); // protect return_bci, in case it is volatile | |
1592 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); | |
1593 ld_ptr(l_tmp, return_bci); | |
1594 pop(state); | |
1595 } | |
1596 | |
1597 // Count a taken branch in the bytecodes. | |
1598 | |
1599 void InterpreterMacroAssembler::profile_taken_branch(Register scratch, Register bumped_count) { | |
1600 if (ProfileInterpreter) { | |
1601 Label profile_continue; | |
1602 | |
1603 // If no method data exists, go to profile_continue. | |
1604 test_method_data_pointer(profile_continue); | |
1605 | |
1606 // We are taking a branch. Increment the taken count. | |
1607 increment_mdp_data_at(in_bytes(JumpData::taken_offset()), bumped_count); | |
1608 | |
1609 // The method data pointer needs to be updated to reflect the new target. | |
1610 update_mdp_by_offset(in_bytes(JumpData::displacement_offset()), scratch); | |
1611 bind (profile_continue); | |
1612 } | |
1613 } | |
1614 | |
1615 | |
1616 // Count a not-taken branch in the bytecodes. | |
1617 | |
1618 void InterpreterMacroAssembler::profile_not_taken_branch(Register scratch) { | |
1619 if (ProfileInterpreter) { | |
1620 Label profile_continue; | |
1621 | |
1622 // If no method data exists, go to profile_continue. | |
1623 test_method_data_pointer(profile_continue); | |
1624 | |
1625 // We are taking a branch. Increment the not taken count. | |
1626 increment_mdp_data_at(in_bytes(BranchData::not_taken_offset()), scratch); | |
1627 | |
1628 // The method data pointer needs to be updated to correspond to the | |
1629 // next bytecode. | |
1630 update_mdp_by_constant(in_bytes(BranchData::branch_data_size())); | |
1631 bind (profile_continue); | |
1632 } | |
1633 } | |
1634 | |
1635 | |
1636 // Count a non-virtual call in the bytecodes. | |
1637 | |
1638 void InterpreterMacroAssembler::profile_call(Register scratch) { | |
1639 if (ProfileInterpreter) { | |
1640 Label profile_continue; | |
1641 | |
1642 // If no method data exists, go to profile_continue. | |
1643 test_method_data_pointer(profile_continue); | |
1644 | |
1645 // We are making a call. Increment the count. | |
1646 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); | |
1647 | |
1648 // The method data pointer needs to be updated to reflect the new target. | |
1649 update_mdp_by_constant(in_bytes(CounterData::counter_data_size())); | |
1650 bind (profile_continue); | |
1651 } | |
1652 } | |
1653 | |
1654 | |
1655 // Count a final call in the bytecodes. | |
1656 | |
1657 void InterpreterMacroAssembler::profile_final_call(Register scratch) { | |
1658 if (ProfileInterpreter) { | |
1659 Label profile_continue; | |
1660 | |
1661 // If no method data exists, go to profile_continue. | |
1662 test_method_data_pointer(profile_continue); | |
1663 | |
1664 // We are making a call. Increment the count. | |
1665 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); | |
1666 | |
1667 // The method data pointer needs to be updated to reflect the new target. | |
1668 update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size())); | |
1669 bind (profile_continue); | |
1670 } | |
1671 } | |
1672 | |
1673 | |
1674 // Count a virtual call in the bytecodes. | |
1675 | |
1676 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, | |
1677 Register scratch) { | |
1678 if (ProfileInterpreter) { | |
1679 Label profile_continue; | |
1680 | |
1681 // If no method data exists, go to profile_continue. | |
1682 test_method_data_pointer(profile_continue); | |
1683 | |
1684 // We are making a call. Increment the count. | |
1685 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); | |
1686 | |
1687 // Record the receiver type. | |
1688 record_klass_in_profile(receiver, scratch); | |
1689 | |
1690 // The method data pointer needs to be updated to reflect the new target. | |
1691 update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size())); | |
1692 bind (profile_continue); | |
1693 } | |
1694 } | |
1695 | |
1696 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
1697 Register receiver, Register scratch, | |
1698 int start_row, Label& done) { | |
967
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|
1699 if (TypeProfileWidth == 0) |
6918603297f7
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|
1700 return; |
6918603297f7
6858208: jvm crash when specifying TypeProfileWidth=0 on jdk 6.0
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parents:
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|
1701 |
0 | 1702 int last_row = VirtualCallData::row_limit() - 1; |
1703 assert(start_row <= last_row, "must be work left to do"); | |
1704 // Test this row for both the receiver and for null. | |
1705 // Take any of three different outcomes: | |
1706 // 1. found receiver => increment count and goto done | |
1707 // 2. found null => keep looking for case 1, maybe allocate this cell | |
1708 // 3. found something else => keep looking for cases 1 and 2 | |
1709 // Case 3 is handled by a recursive call. | |
1710 for (int row = start_row; row <= last_row; row++) { | |
1711 Label next_test; | |
1712 bool test_for_null_also = (row == start_row); | |
1713 | |
1714 // See if the receiver is receiver[n]. | |
1715 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
1716 test_mdp_data_at(recvr_offset, receiver, next_test, scratch); | |
1717 | |
1718 // The receiver is receiver[n]. Increment count[n]. | |
1719 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
1720 increment_mdp_data_at(count_offset, scratch); | |
1721 ba(false, done); | |
1722 delayed()->nop(); | |
1723 bind(next_test); | |
1724 | |
1725 if (test_for_null_also) { | |
1726 // Failed the equality check on receiver[n]... Test for null. | |
1727 if (start_row == last_row) { | |
1728 // The only thing left to do is handle the null case. | |
1729 brx(Assembler::notZero, false, Assembler::pt, done); | |
1730 delayed()->nop(); | |
1731 break; | |
1732 } | |
1733 // Since null is rare, make it be the branch-taken case. | |
1734 Label found_null; | |
1735 brx(Assembler::zero, false, Assembler::pn, found_null); | |
1736 delayed()->nop(); | |
1737 | |
1738 // Put all the "Case 3" tests here. | |
1739 record_klass_in_profile_helper(receiver, scratch, start_row + 1, done); | |
1740 | |
1741 // Found a null. Keep searching for a matching receiver, | |
1742 // but remember that this is an empty (unused) slot. | |
1743 bind(found_null); | |
1744 } | |
1745 } | |
1746 | |
1747 // In the fall-through case, we found no matching receiver, but we | |
1748 // observed the receiver[start_row] is NULL. | |
1749 | |
1750 // Fill in the receiver field and increment the count. | |
1751 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
1752 set_mdp_data_at(recvr_offset, receiver); | |
1753 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
1754 mov(DataLayout::counter_increment, scratch); | |
1755 set_mdp_data_at(count_offset, scratch); | |
1756 ba(false, done); | |
1757 delayed()->nop(); | |
1758 } | |
1759 | |
1760 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver, | |
1761 Register scratch) { | |
1762 assert(ProfileInterpreter, "must be profiling"); | |
1763 Label done; | |
1764 | |
1765 record_klass_in_profile_helper(receiver, scratch, 0, done); | |
1766 | |
1767 bind (done); | |
1768 } | |
1769 | |
1770 | |
1771 // Count a ret in the bytecodes. | |
1772 | |
1773 void InterpreterMacroAssembler::profile_ret(TosState state, | |
1774 Register return_bci, | |
1775 Register scratch) { | |
1776 if (ProfileInterpreter) { | |
1777 Label profile_continue; | |
1778 uint row; | |
1779 | |
1780 // If no method data exists, go to profile_continue. | |
1781 test_method_data_pointer(profile_continue); | |
1782 | |
1783 // Update the total ret count. | |
1784 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); | |
1785 | |
1786 for (row = 0; row < RetData::row_limit(); row++) { | |
1787 Label next_test; | |
1788 | |
1789 // See if return_bci is equal to bci[n]: | |
1790 test_mdp_data_at(in_bytes(RetData::bci_offset(row)), | |
1791 return_bci, next_test, scratch); | |
1792 | |
1793 // return_bci is equal to bci[n]. Increment the count. | |
1794 increment_mdp_data_at(in_bytes(RetData::bci_count_offset(row)), scratch); | |
1795 | |
1796 // The method data pointer needs to be updated to reflect the new target. | |
1797 update_mdp_by_offset(in_bytes(RetData::bci_displacement_offset(row)), scratch); | |
1798 ba(false, profile_continue); | |
1799 delayed()->nop(); | |
1800 bind(next_test); | |
1801 } | |
1802 | |
1803 update_mdp_for_ret(state, return_bci); | |
1804 | |
1805 bind (profile_continue); | |
1806 } | |
1807 } | |
1808 | |
1809 // Profile an unexpected null in the bytecodes. | |
1810 void InterpreterMacroAssembler::profile_null_seen(Register scratch) { | |
1811 if (ProfileInterpreter) { | |
1812 Label profile_continue; | |
1813 | |
1814 // If no method data exists, go to profile_continue. | |
1815 test_method_data_pointer(profile_continue); | |
1816 | |
1817 set_mdp_flag_at(BitData::null_seen_byte_constant(), scratch); | |
1818 | |
1819 // The method data pointer needs to be updated. | |
1820 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1821 if (TypeProfileCasts) { | |
1822 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1823 } | |
1824 update_mdp_by_constant(mdp_delta); | |
1825 | |
1826 bind (profile_continue); | |
1827 } | |
1828 } | |
1829 | |
1830 void InterpreterMacroAssembler::profile_typecheck(Register klass, | |
1831 Register scratch) { | |
1832 if (ProfileInterpreter) { | |
1833 Label profile_continue; | |
1834 | |
1835 // If no method data exists, go to profile_continue. | |
1836 test_method_data_pointer(profile_continue); | |
1837 | |
1838 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1839 if (TypeProfileCasts) { | |
1840 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1841 | |
1842 // Record the object type. | |
1843 record_klass_in_profile(klass, scratch); | |
1844 } | |
1845 | |
1846 // The method data pointer needs to be updated. | |
1847 update_mdp_by_constant(mdp_delta); | |
1848 | |
1849 bind (profile_continue); | |
1850 } | |
1851 } | |
1852 | |
1853 void InterpreterMacroAssembler::profile_typecheck_failed(Register scratch) { | |
1854 if (ProfileInterpreter && TypeProfileCasts) { | |
1855 Label profile_continue; | |
1856 | |
1857 // If no method data exists, go to profile_continue. | |
1858 test_method_data_pointer(profile_continue); | |
1859 | |
1860 int count_offset = in_bytes(CounterData::count_offset()); | |
1861 // Back up the address, since we have already bumped the mdp. | |
1862 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
1863 | |
1864 // *Decrement* the counter. We expect to see zero or small negatives. | |
1865 increment_mdp_data_at(count_offset, scratch, true); | |
1866 | |
1867 bind (profile_continue); | |
1868 } | |
1869 } | |
1870 | |
1871 // Count the default case of a switch construct. | |
1872 | |
1873 void InterpreterMacroAssembler::profile_switch_default(Register scratch) { | |
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 // Update the default case count | |
1881 increment_mdp_data_at(in_bytes(MultiBranchData::default_count_offset()), | |
1882 scratch); | |
1883 | |
1884 // The method data pointer needs to be updated. | |
1885 update_mdp_by_offset( | |
1886 in_bytes(MultiBranchData::default_displacement_offset()), | |
1887 scratch); | |
1888 | |
1889 bind (profile_continue); | |
1890 } | |
1891 } | |
1892 | |
1893 // Count the index'th case of a switch construct. | |
1894 | |
1895 void InterpreterMacroAssembler::profile_switch_case(Register index, | |
1896 Register scratch, | |
1897 Register scratch2, | |
1898 Register scratch3) { | |
1899 if (ProfileInterpreter) { | |
1900 Label profile_continue; | |
1901 | |
1902 // If no method data exists, go to profile_continue. | |
1903 test_method_data_pointer(profile_continue); | |
1904 | |
1905 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes() | |
1906 set(in_bytes(MultiBranchData::per_case_size()), scratch); | |
1907 smul(index, scratch, scratch); | |
1908 add(scratch, in_bytes(MultiBranchData::case_array_offset()), scratch); | |
1909 | |
1910 // Update the case count | |
1911 increment_mdp_data_at(scratch, | |
1912 in_bytes(MultiBranchData::relative_count_offset()), | |
1913 scratch2, | |
1914 scratch3); | |
1915 | |
1916 // The method data pointer needs to be updated. | |
1917 update_mdp_by_offset(scratch, | |
1918 in_bytes(MultiBranchData::relative_displacement_offset()), | |
1919 scratch2); | |
1920 | |
1921 bind (profile_continue); | |
1922 } | |
1923 } | |
1924 | |
1925 // add a InterpMonitorElem to stack (see frame_sparc.hpp) | |
1926 | |
1927 void InterpreterMacroAssembler::add_monitor_to_stack( bool stack_is_empty, | |
1928 Register Rtemp, | |
1929 Register Rtemp2 ) { | |
1930 | |
1931 Register Rlimit = Lmonitors; | |
1932 const jint delta = frame::interpreter_frame_monitor_size() * wordSize; | |
1933 assert( (delta & LongAlignmentMask) == 0, | |
1934 "sizeof BasicObjectLock must be even number of doublewords"); | |
1935 | |
1936 sub( SP, delta, SP); | |
1937 sub( Lesp, delta, Lesp); | |
1938 sub( Lmonitors, delta, Lmonitors); | |
1939 | |
1940 if (!stack_is_empty) { | |
1941 | |
1942 // must copy stack contents down | |
1943 | |
1944 Label start_copying, next; | |
1945 | |
1946 // untested("monitor stack expansion"); | |
1947 compute_stack_base(Rtemp); | |
1948 ba( false, start_copying ); | |
1949 delayed()->cmp( Rtemp, Rlimit); // done? duplicated below | |
1950 | |
1951 // note: must copy from low memory upwards | |
1952 // On entry to loop, | |
1953 // Rtemp points to new base of stack, Lesp points to new end of stack (1 past TOS) | |
1954 // Loop mutates Rtemp | |
1955 | |
1956 bind( next); | |
1957 | |
1958 st_ptr(Rtemp2, Rtemp, 0); | |
1959 inc(Rtemp, wordSize); | |
1960 cmp(Rtemp, Rlimit); // are we done? (duplicated above) | |
1961 | |
1962 bind( start_copying ); | |
1963 | |
1964 brx( notEqual, true, pn, next ); | |
1965 delayed()->ld_ptr( Rtemp, delta, Rtemp2 ); | |
1966 | |
1967 // done copying stack | |
1968 } | |
1969 } | |
1970 | |
1971 // Locals | |
1972 #ifdef ASSERT | |
1973 void InterpreterMacroAssembler::verify_local_tag(frame::Tag t, | |
1974 Register base, | |
1975 Register scratch, | |
1976 int n) { | |
1977 if (TaggedStackInterpreter) { | |
1978 Label ok, long_ok; | |
1979 // Use dst for scratch | |
1980 assert_different_registers(base, scratch); | |
1981 ld_ptr(base, Interpreter::local_tag_offset_in_bytes(n), scratch); | |
1982 if (t == frame::TagCategory2) { | |
1983 cmp(scratch, G0); | |
1984 brx(Assembler::equal, false, Assembler::pt, long_ok); | |
1985 delayed()->ld_ptr(base, Interpreter::local_tag_offset_in_bytes(n+1), scratch); | |
1986 stop("local long/double tag value bad"); | |
1987 bind(long_ok); | |
1988 // compare second half tag | |
1989 cmp(scratch, G0); | |
1990 } else if (t == frame::TagValue) { | |
1991 cmp(scratch, G0); | |
1992 } else { | |
1993 assert_different_registers(O3, base, scratch); | |
1994 mov(t, O3); | |
1995 cmp(scratch, O3); | |
1996 } | |
1997 brx(Assembler::equal, false, Assembler::pt, ok); | |
1998 delayed()->nop(); | |
1999 // Also compare if the local value is zero, then the tag might | |
2000 // not have been set coming from deopt. | |
2001 ld_ptr(base, Interpreter::local_offset_in_bytes(n), scratch); | |
2002 cmp(scratch, G0); | |
2003 brx(Assembler::equal, false, Assembler::pt, ok); | |
2004 delayed()->nop(); | |
2005 stop("Local tag value is bad"); | |
2006 bind(ok); | |
2007 } | |
2008 } | |
2009 #endif // ASSERT | |
2010 | |
2011 void InterpreterMacroAssembler::access_local_ptr( Register index, Register dst ) { | |
2012 assert_not_delayed(); | |
2013 sll(index, Interpreter::logStackElementSize(), index); | |
2014 sub(Llocals, index, index); | |
2015 debug_only(verify_local_tag(frame::TagReference, index, dst)); | |
2016 ld_ptr(index, Interpreter::value_offset_in_bytes(), dst); | |
2017 // Note: index must hold the effective address--the iinc template uses it | |
2018 } | |
2019 | |
2020 // Just like access_local_ptr but the tag is a returnAddress | |
2021 void InterpreterMacroAssembler::access_local_returnAddress(Register index, | |
2022 Register dst ) { | |
2023 assert_not_delayed(); | |
2024 sll(index, Interpreter::logStackElementSize(), index); | |
2025 sub(Llocals, index, index); | |
2026 debug_only(verify_local_tag(frame::TagValue, index, dst)); | |
2027 ld_ptr(index, Interpreter::value_offset_in_bytes(), dst); | |
2028 } | |
2029 | |
2030 void InterpreterMacroAssembler::access_local_int( Register index, Register dst ) { | |
2031 assert_not_delayed(); | |
2032 sll(index, Interpreter::logStackElementSize(), index); | |
2033 sub(Llocals, index, index); | |
2034 debug_only(verify_local_tag(frame::TagValue, index, dst)); | |
2035 ld(index, Interpreter::value_offset_in_bytes(), dst); | |
2036 // Note: index must hold the effective address--the iinc template uses it | |
2037 } | |
2038 | |
2039 | |
2040 void InterpreterMacroAssembler::access_local_long( Register index, Register dst ) { | |
2041 assert_not_delayed(); | |
2042 sll(index, Interpreter::logStackElementSize(), index); | |
2043 sub(Llocals, index, index); | |
2044 debug_only(verify_local_tag(frame::TagCategory2, index, dst)); | |
2045 // First half stored at index n+1 (which grows down from Llocals[n]) | |
2046 load_unaligned_long(index, Interpreter::local_offset_in_bytes(1), dst); | |
2047 } | |
2048 | |
2049 | |
2050 void InterpreterMacroAssembler::access_local_float( Register index, FloatRegister dst ) { | |
2051 assert_not_delayed(); | |
2052 sll(index, Interpreter::logStackElementSize(), index); | |
2053 sub(Llocals, index, index); | |
2054 debug_only(verify_local_tag(frame::TagValue, index, G1_scratch)); | |
2055 ldf(FloatRegisterImpl::S, index, Interpreter::value_offset_in_bytes(), dst); | |
2056 } | |
2057 | |
2058 | |
2059 void InterpreterMacroAssembler::access_local_double( Register index, FloatRegister dst ) { | |
2060 assert_not_delayed(); | |
2061 sll(index, Interpreter::logStackElementSize(), index); | |
2062 sub(Llocals, index, index); | |
2063 debug_only(verify_local_tag(frame::TagCategory2, index, G1_scratch)); | |
2064 load_unaligned_double(index, Interpreter::local_offset_in_bytes(1), dst); | |
2065 } | |
2066 | |
2067 | |
2068 #ifdef ASSERT | |
2069 void InterpreterMacroAssembler::check_for_regarea_stomp(Register Rindex, int offset, Register Rlimit, Register Rscratch, Register Rscratch1) { | |
2070 Label L; | |
2071 | |
2072 assert(Rindex != Rscratch, "Registers cannot be same"); | |
2073 assert(Rindex != Rscratch1, "Registers cannot be same"); | |
2074 assert(Rlimit != Rscratch, "Registers cannot be same"); | |
2075 assert(Rlimit != Rscratch1, "Registers cannot be same"); | |
2076 assert(Rscratch1 != Rscratch, "Registers cannot be same"); | |
2077 | |
2078 // untested("reg area corruption"); | |
2079 add(Rindex, offset, Rscratch); | |
2080 add(Rlimit, 64 + STACK_BIAS, Rscratch1); | |
2081 cmp(Rscratch, Rscratch1); | |
2082 brx(Assembler::greaterEqualUnsigned, false, pn, L); | |
2083 delayed()->nop(); | |
2084 stop("regsave area is being clobbered"); | |
2085 bind(L); | |
2086 } | |
2087 #endif // ASSERT | |
2088 | |
2089 void InterpreterMacroAssembler::tag_local(frame::Tag t, | |
2090 Register base, | |
2091 Register src, | |
2092 int n) { | |
2093 if (TaggedStackInterpreter) { | |
2094 // have to store zero because local slots can be reused (rats!) | |
2095 if (t == frame::TagValue) { | |
2096 st_ptr(G0, base, Interpreter::local_tag_offset_in_bytes(n)); | |
2097 } else if (t == frame::TagCategory2) { | |
2098 st_ptr(G0, base, Interpreter::local_tag_offset_in_bytes(n)); | |
2099 st_ptr(G0, base, Interpreter::local_tag_offset_in_bytes(n+1)); | |
2100 } else { | |
2101 // assert that we don't stomp the value in 'src' | |
2102 // O3 is arbitrary because it's not used. | |
2103 assert_different_registers(src, base, O3); | |
2104 mov( t, O3); | |
2105 st_ptr(O3, base, Interpreter::local_tag_offset_in_bytes(n)); | |
2106 } | |
2107 } | |
2108 } | |
2109 | |
2110 | |
2111 void InterpreterMacroAssembler::store_local_int( Register index, Register src ) { | |
2112 assert_not_delayed(); | |
2113 sll(index, Interpreter::logStackElementSize(), index); | |
2114 sub(Llocals, index, index); | |
2115 debug_only(check_for_regarea_stomp(index, Interpreter::value_offset_in_bytes(), FP, G1_scratch, G4_scratch);) | |
2116 tag_local(frame::TagValue, index, src); | |
2117 st(src, index, Interpreter::value_offset_in_bytes()); | |
2118 } | |
2119 | |
2120 void InterpreterMacroAssembler::store_local_ptr( Register index, Register src, | |
2121 Register tag ) { | |
2122 assert_not_delayed(); | |
2123 sll(index, Interpreter::logStackElementSize(), index); | |
2124 sub(Llocals, index, index); | |
2125 #ifdef ASSERT | |
2126 check_for_regarea_stomp(index, Interpreter::value_offset_in_bytes(), FP, G1_scratch, G4_scratch); | |
2127 #endif | |
2128 st_ptr(src, index, Interpreter::value_offset_in_bytes()); | |
2129 // Store tag register directly | |
2130 if (TaggedStackInterpreter) { | |
2131 st_ptr(tag, index, Interpreter::tag_offset_in_bytes()); | |
2132 } | |
2133 } | |
2134 | |
2135 | |
2136 | |
2137 void InterpreterMacroAssembler::store_local_ptr( int n, Register src, | |
2138 Register tag ) { | |
2139 st_ptr(src, Llocals, Interpreter::local_offset_in_bytes(n)); | |
2140 if (TaggedStackInterpreter) { | |
2141 st_ptr(tag, Llocals, Interpreter::local_tag_offset_in_bytes(n)); | |
2142 } | |
2143 } | |
2144 | |
2145 void InterpreterMacroAssembler::store_local_long( Register index, Register src ) { | |
2146 assert_not_delayed(); | |
2147 sll(index, Interpreter::logStackElementSize(), index); | |
2148 sub(Llocals, index, index); | |
2149 #ifdef ASSERT | |
2150 check_for_regarea_stomp(index, Interpreter::local_offset_in_bytes(1), FP, G1_scratch, G4_scratch); | |
2151 #endif | |
2152 tag_local(frame::TagCategory2, index, src); | |
2153 store_unaligned_long(src, index, Interpreter::local_offset_in_bytes(1)); // which is n+1 | |
2154 } | |
2155 | |
2156 | |
2157 void InterpreterMacroAssembler::store_local_float( Register index, FloatRegister src ) { | |
2158 assert_not_delayed(); | |
2159 sll(index, Interpreter::logStackElementSize(), index); | |
2160 sub(Llocals, index, index); | |
2161 #ifdef ASSERT | |
2162 check_for_regarea_stomp(index, Interpreter::value_offset_in_bytes(), FP, G1_scratch, G4_scratch); | |
2163 #endif | |
2164 tag_local(frame::TagValue, index, G1_scratch); | |
2165 stf(FloatRegisterImpl::S, src, index, Interpreter::value_offset_in_bytes()); | |
2166 } | |
2167 | |
2168 | |
2169 void InterpreterMacroAssembler::store_local_double( Register index, FloatRegister src ) { | |
2170 assert_not_delayed(); | |
2171 sll(index, Interpreter::logStackElementSize(), index); | |
2172 sub(Llocals, index, index); | |
2173 #ifdef ASSERT | |
2174 check_for_regarea_stomp(index, Interpreter::local_offset_in_bytes(1), FP, G1_scratch, G4_scratch); | |
2175 #endif | |
2176 tag_local(frame::TagCategory2, index, G1_scratch); | |
2177 store_unaligned_double(src, index, Interpreter::local_offset_in_bytes(1)); | |
2178 } | |
2179 | |
2180 | |
2181 int InterpreterMacroAssembler::top_most_monitor_byte_offset() { | |
2182 const jint delta = frame::interpreter_frame_monitor_size() * wordSize; | |
2183 int rounded_vm_local_words = ::round_to(frame::interpreter_frame_vm_local_words, WordsPerLong); | |
2184 return ((-rounded_vm_local_words * wordSize) - delta ) + STACK_BIAS; | |
2185 } | |
2186 | |
2187 | |
2188 Address InterpreterMacroAssembler::top_most_monitor() { | |
727 | 2189 return Address(FP, top_most_monitor_byte_offset()); |
0 | 2190 } |
2191 | |
2192 | |
2193 void InterpreterMacroAssembler::compute_stack_base( Register Rdest ) { | |
2194 add( Lesp, wordSize, Rdest ); | |
2195 } | |
2196 | |
2197 #endif /* CC_INTERP */ | |
2198 | |
2199 void InterpreterMacroAssembler::increment_invocation_counter( Register Rtmp, Register Rtmp2 ) { | |
2200 assert(UseCompiler, "incrementing must be useful"); | |
2201 #ifdef CC_INTERP | |
727 | 2202 Address inv_counter(G5_method, methodOopDesc::invocation_counter_offset() + |
2203 InvocationCounter::counter_offset()); | |
2204 Address be_counter (G5_method, methodOopDesc::backedge_counter_offset() + | |
2205 InvocationCounter::counter_offset()); | |
0 | 2206 #else |
727 | 2207 Address inv_counter(Lmethod, methodOopDesc::invocation_counter_offset() + |
2208 InvocationCounter::counter_offset()); | |
2209 Address be_counter (Lmethod, methodOopDesc::backedge_counter_offset() + | |
2210 InvocationCounter::counter_offset()); | |
0 | 2211 #endif /* CC_INTERP */ |
2212 int delta = InvocationCounter::count_increment; | |
2213 | |
2214 // Load each counter in a register | |
2215 ld( inv_counter, Rtmp ); | |
2216 ld( be_counter, Rtmp2 ); | |
2217 | |
2218 assert( is_simm13( delta ), " delta too large."); | |
2219 | |
2220 // Add the delta to the invocation counter and store the result | |
2221 add( Rtmp, delta, Rtmp ); | |
2222 | |
2223 // Mask the backedge counter | |
2224 and3( Rtmp2, InvocationCounter::count_mask_value, Rtmp2 ); | |
2225 | |
2226 // Store value | |
2227 st( Rtmp, inv_counter); | |
2228 | |
2229 // Add invocation counter + backedge counter | |
2230 add( Rtmp, Rtmp2, Rtmp); | |
2231 | |
2232 // Note that this macro must leave the backedge_count + invocation_count in Rtmp! | |
2233 } | |
2234 | |
2235 void InterpreterMacroAssembler::increment_backedge_counter( Register Rtmp, Register Rtmp2 ) { | |
2236 assert(UseCompiler, "incrementing must be useful"); | |
2237 #ifdef CC_INTERP | |
727 | 2238 Address be_counter (G5_method, methodOopDesc::backedge_counter_offset() + |
2239 InvocationCounter::counter_offset()); | |
2240 Address inv_counter(G5_method, methodOopDesc::invocation_counter_offset() + | |
2241 InvocationCounter::counter_offset()); | |
0 | 2242 #else |
727 | 2243 Address be_counter (Lmethod, methodOopDesc::backedge_counter_offset() + |
2244 InvocationCounter::counter_offset()); | |
2245 Address inv_counter(Lmethod, methodOopDesc::invocation_counter_offset() + | |
2246 InvocationCounter::counter_offset()); | |
0 | 2247 #endif /* CC_INTERP */ |
2248 int delta = InvocationCounter::count_increment; | |
2249 // Load each counter in a register | |
2250 ld( be_counter, Rtmp ); | |
2251 ld( inv_counter, Rtmp2 ); | |
2252 | |
2253 // Add the delta to the backedge counter | |
2254 add( Rtmp, delta, Rtmp ); | |
2255 | |
2256 // Mask the invocation counter, add to backedge counter | |
2257 and3( Rtmp2, InvocationCounter::count_mask_value, Rtmp2 ); | |
2258 | |
2259 // and store the result to memory | |
2260 st( Rtmp, be_counter ); | |
2261 | |
2262 // Add backedge + invocation counter | |
2263 add( Rtmp, Rtmp2, Rtmp ); | |
2264 | |
2265 // Note that this macro must leave backedge_count + invocation_count in Rtmp! | |
2266 } | |
2267 | |
2268 #ifndef CC_INTERP | |
2269 void InterpreterMacroAssembler::test_backedge_count_for_osr( Register backedge_count, | |
2270 Register branch_bcp, | |
2271 Register Rtmp ) { | |
2272 Label did_not_overflow; | |
2273 Label overflow_with_error; | |
2274 assert_different_registers(backedge_count, Rtmp, branch_bcp); | |
2275 assert(UseOnStackReplacement,"Must UseOnStackReplacement to test_backedge_count_for_osr"); | |
2276 | |
727 | 2277 AddressLiteral limit(&InvocationCounter::InterpreterBackwardBranchLimit); |
0 | 2278 load_contents(limit, Rtmp); |
2279 cmp(backedge_count, Rtmp); | |
2280 br(Assembler::lessUnsigned, false, Assembler::pt, did_not_overflow); | |
2281 delayed()->nop(); | |
2282 | |
2283 // When ProfileInterpreter is on, the backedge_count comes from the | |
2284 // methodDataOop, which value does not get reset on the call to | |
2285 // frequency_counter_overflow(). To avoid excessive calls to the overflow | |
2286 // routine while the method is being compiled, add a second test to make sure | |
2287 // the overflow function is called only once every overflow_frequency. | |
2288 if (ProfileInterpreter) { | |
2289 const int overflow_frequency = 1024; | |
2290 andcc(backedge_count, overflow_frequency-1, Rtmp); | |
2291 brx(Assembler::notZero, false, Assembler::pt, did_not_overflow); | |
2292 delayed()->nop(); | |
2293 } | |
2294 | |
2295 // overflow in loop, pass branch bytecode | |
2296 set(6,Rtmp); | |
2297 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), branch_bcp, Rtmp); | |
2298 | |
2299 // Was an OSR adapter generated? | |
2300 // O0 = osr nmethod | |
2301 tst(O0); | |
2302 brx(Assembler::zero, false, Assembler::pn, overflow_with_error); | |
2303 delayed()->nop(); | |
2304 | |
2305 // Has the nmethod been invalidated already? | |
2306 ld(O0, nmethod::entry_bci_offset(), O2); | |
2307 cmp(O2, InvalidOSREntryBci); | |
2308 br(Assembler::equal, false, Assembler::pn, overflow_with_error); | |
2309 delayed()->nop(); | |
2310 | |
2311 // migrate the interpreter frame off of the stack | |
2312 | |
2313 mov(G2_thread, L7); | |
2314 // save nmethod | |
2315 mov(O0, L6); | |
2316 set_last_Java_frame(SP, noreg); | |
2317 call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin), L7); | |
2318 reset_last_Java_frame(); | |
2319 mov(L7, G2_thread); | |
2320 | |
2321 // move OSR nmethod to I1 | |
2322 mov(L6, I1); | |
2323 | |
2324 // OSR buffer to I0 | |
2325 mov(O0, I0); | |
2326 | |
2327 // remove the interpreter frame | |
2328 restore(I5_savedSP, 0, SP); | |
2329 | |
2330 // Jump to the osr code. | |
2331 ld_ptr(O1, nmethod::osr_entry_point_offset(), O2); | |
2332 jmp(O2, G0); | |
2333 delayed()->nop(); | |
2334 | |
2335 bind(overflow_with_error); | |
2336 | |
2337 bind(did_not_overflow); | |
2338 } | |
2339 | |
2340 | |
2341 | |
2342 void InterpreterMacroAssembler::interp_verify_oop(Register reg, TosState state, const char * file, int line) { | |
2343 if (state == atos) { MacroAssembler::_verify_oop(reg, "broken oop ", file, line); } | |
2344 } | |
2345 | |
2346 | |
2347 // local helper function for the verify_oop_or_return_address macro | |
2348 static bool verify_return_address(methodOopDesc* m, int bci) { | |
2349 #ifndef PRODUCT | |
2350 address pc = (address)(m->constMethod()) | |
2351 + in_bytes(constMethodOopDesc::codes_offset()) + bci; | |
2352 // assume it is a valid return address if it is inside m and is preceded by a jsr | |
2353 if (!m->contains(pc)) return false; | |
2354 address jsr_pc; | |
2355 jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr); | |
2356 if (*jsr_pc == Bytecodes::_jsr && jsr_pc >= m->code_base()) return true; | |
2357 jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr_w); | |
2358 if (*jsr_pc == Bytecodes::_jsr_w && jsr_pc >= m->code_base()) return true; | |
2359 #endif // PRODUCT | |
2360 return false; | |
2361 } | |
2362 | |
2363 | |
2364 void InterpreterMacroAssembler::verify_oop_or_return_address(Register reg, Register Rtmp) { | |
2365 if (!VerifyOops) return; | |
2366 // the VM documentation for the astore[_wide] bytecode allows | |
2367 // the TOS to be not only an oop but also a return address | |
2368 Label test; | |
2369 Label skip; | |
2370 // See if it is an address (in the current method): | |
2371 | |
2372 mov(reg, Rtmp); | |
2373 const int log2_bytecode_size_limit = 16; | |
2374 srl(Rtmp, log2_bytecode_size_limit, Rtmp); | |
2375 br_notnull( Rtmp, false, pt, test ); | |
2376 delayed()->nop(); | |
2377 | |
2378 // %%% should use call_VM_leaf here? | |
2379 save_frame_and_mov(0, Lmethod, O0, reg, O1); | |
2380 save_thread(L7_thread_cache); | |
2381 call(CAST_FROM_FN_PTR(address,verify_return_address), relocInfo::none); | |
2382 delayed()->nop(); | |
2383 restore_thread(L7_thread_cache); | |
2384 br_notnull( O0, false, pt, skip ); | |
2385 delayed()->restore(); | |
2386 | |
2387 // Perform a more elaborate out-of-line call | |
2388 // Not an address; verify it: | |
2389 bind(test); | |
2390 verify_oop(reg); | |
2391 bind(skip); | |
2392 } | |
2393 | |
2394 | |
2395 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
2396 if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth); | |
2397 } | |
2398 #endif /* CC_INTERP */ | |
2399 | |
2400 // Inline assembly for: | |
2401 // | |
2402 // if (thread is in interp_only_mode) { | |
2403 // InterpreterRuntime::post_method_entry(); | |
2404 // } | |
2405 // if (DTraceMethodProbes) { | |
605 | 2406 // SharedRuntime::dtrace_method_entry(method, receiver); |
0 | 2407 // } |
610
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2408 // if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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2409 // SharedRuntime::rc_trace_method_entry(method, receiver); |
0 | 2410 // } |
2411 | |
2412 void InterpreterMacroAssembler::notify_method_entry() { | |
2413 | |
2414 // C++ interpreter only uses this for native methods. | |
2415 | |
2416 // Whenever JVMTI puts a thread in interp_only_mode, method | |
2417 // entry/exit events are sent for that thread to track stack | |
2418 // depth. If it is possible to enter interp_only_mode we add | |
2419 // the code to check if the event should be sent. | |
2420 if (JvmtiExport::can_post_interpreter_events()) { | |
2421 Label L; | |
2422 Register temp_reg = O5; | |
727 | 2423 const Address interp_only(G2_thread, JavaThread::interp_only_mode_offset()); |
0 | 2424 ld(interp_only, temp_reg); |
2425 tst(temp_reg); | |
2426 br(zero, false, pt, L); | |
2427 delayed()->nop(); | |
2428 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry)); | |
2429 bind(L); | |
2430 } | |
2431 | |
2432 { | |
2433 Register temp_reg = O5; | |
2434 SkipIfEqual skip_if(this, temp_reg, &DTraceMethodProbes, zero); | |
2435 call_VM_leaf(noreg, | |
2436 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), | |
2437 G2_thread, Lmethod); | |
2438 } | |
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2439 |
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2440 // RedefineClasses() tracing support for obsolete method entry |
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2441 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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2442 call_VM_leaf(noreg, |
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2443 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), |
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2444 G2_thread, Lmethod); |
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2445 } |
0 | 2446 } |
2447 | |
2448 | |
2449 // Inline assembly for: | |
2450 // | |
2451 // if (thread is in interp_only_mode) { | |
2452 // // save result | |
2453 // InterpreterRuntime::post_method_exit(); | |
2454 // // restore result | |
2455 // } | |
2456 // if (DTraceMethodProbes) { | |
2457 // SharedRuntime::dtrace_method_exit(thread, method); | |
2458 // } | |
2459 // | |
2460 // Native methods have their result stored in d_tmp and l_tmp | |
2461 // Java methods have their result stored in the expression stack | |
2462 | |
2463 void InterpreterMacroAssembler::notify_method_exit(bool is_native_method, | |
2464 TosState state, | |
2465 NotifyMethodExitMode mode) { | |
2466 // C++ interpreter only uses this for native methods. | |
2467 | |
2468 // Whenever JVMTI puts a thread in interp_only_mode, method | |
2469 // entry/exit events are sent for that thread to track stack | |
2470 // depth. If it is possible to enter interp_only_mode we add | |
2471 // the code to check if the event should be sent. | |
2472 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { | |
2473 Label L; | |
2474 Register temp_reg = O5; | |
727 | 2475 const Address interp_only(G2_thread, JavaThread::interp_only_mode_offset()); |
0 | 2476 ld(interp_only, temp_reg); |
2477 tst(temp_reg); | |
2478 br(zero, false, pt, L); | |
2479 delayed()->nop(); | |
2480 | |
2481 // Note: frame::interpreter_frame_result has a dependency on how the | |
2482 // method result is saved across the call to post_method_exit. For | |
2483 // native methods it assumes the result registers are saved to | |
2484 // l_scratch and d_scratch. If this changes then the interpreter_frame_result | |
2485 // implementation will need to be updated too. | |
2486 | |
2487 save_return_value(state, is_native_method); | |
2488 call_VM(noreg, | |
2489 CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit)); | |
2490 restore_return_value(state, is_native_method); | |
2491 bind(L); | |
2492 } | |
2493 | |
2494 { | |
2495 Register temp_reg = O5; | |
2496 // Dtrace notification | |
2497 SkipIfEqual skip_if(this, temp_reg, &DTraceMethodProbes, zero); | |
2498 save_return_value(state, is_native_method); | |
2499 call_VM_leaf( | |
2500 noreg, | |
2501 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), | |
2502 G2_thread, Lmethod); | |
2503 restore_return_value(state, is_native_method); | |
2504 } | |
2505 } | |
2506 | |
2507 void InterpreterMacroAssembler::save_return_value(TosState state, bool is_native_call) { | |
2508 #ifdef CC_INTERP | |
2509 // result potentially in O0/O1: save it across calls | |
2510 stf(FloatRegisterImpl::D, F0, STATE(_native_fresult)); | |
2511 #ifdef _LP64 | |
2512 stx(O0, STATE(_native_lresult)); | |
2513 #else | |
2514 std(O0, STATE(_native_lresult)); | |
2515 #endif | |
2516 #else // CC_INTERP | |
2517 if (is_native_call) { | |
2518 stf(FloatRegisterImpl::D, F0, d_tmp); | |
2519 #ifdef _LP64 | |
2520 stx(O0, l_tmp); | |
2521 #else | |
2522 std(O0, l_tmp); | |
2523 #endif | |
2524 } else { | |
2525 push(state); | |
2526 } | |
2527 #endif // CC_INTERP | |
2528 } | |
2529 | |
2530 void InterpreterMacroAssembler::restore_return_value( TosState state, bool is_native_call) { | |
2531 #ifdef CC_INTERP | |
2532 ldf(FloatRegisterImpl::D, STATE(_native_fresult), F0); | |
2533 #ifdef _LP64 | |
2534 ldx(STATE(_native_lresult), O0); | |
2535 #else | |
2536 ldd(STATE(_native_lresult), O0); | |
2537 #endif | |
2538 #else // CC_INTERP | |
2539 if (is_native_call) { | |
2540 ldf(FloatRegisterImpl::D, d_tmp, F0); | |
2541 #ifdef _LP64 | |
2542 ldx(l_tmp, O0); | |
2543 #else | |
2544 ldd(l_tmp, O0); | |
2545 #endif | |
2546 } else { | |
2547 pop(state); | |
2548 } | |
2549 #endif // CC_INTERP | |
2550 } |