Mercurial > hg > truffle
annotate src/cpu/x86/vm/interp_masm_x86_32.cpp @ 9433:45a73cd19baa
Use the correct move instruction for register saving and restoring.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Tue, 30 Apr 2013 19:25:08 +0200 |
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rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "interp_masm_x86_32.hpp" | |
27 #include "interpreter/interpreter.hpp" | |
28 #include "interpreter/interpreterRuntime.hpp" | |
29 #include "oops/arrayOop.hpp" | |
30 #include "oops/markOop.hpp" | |
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31 #include "oops/methodData.hpp" |
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32 #include "oops/method.hpp" |
1972 | 33 #include "prims/jvmtiExport.hpp" |
34 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
35 #include "prims/jvmtiThreadState.hpp" | |
36 #include "runtime/basicLock.hpp" | |
37 #include "runtime/biasedLocking.hpp" | |
38 #include "runtime/sharedRuntime.hpp" | |
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39 #include "runtime/thread.inline.hpp" |
0 | 40 |
41 | |
42 // Implementation of InterpreterMacroAssembler | |
43 #ifdef CC_INTERP | |
44 void InterpreterMacroAssembler::get_method(Register reg) { | |
304 | 45 movptr(reg, Address(rbp, -(sizeof(BytecodeInterpreter) + 2 * wordSize))); |
46 movptr(reg, Address(reg, byte_offset_of(BytecodeInterpreter, _method))); | |
0 | 47 } |
48 #endif // CC_INTERP | |
49 | |
50 | |
51 #ifndef CC_INTERP | |
52 void InterpreterMacroAssembler::call_VM_leaf_base( | |
53 address entry_point, | |
54 int number_of_arguments | |
55 ) { | |
56 // interpreter specific | |
57 // | |
58 // Note: No need to save/restore bcp & locals (rsi & rdi) pointer | |
59 // since these are callee saved registers and no blocking/ | |
60 // GC can happen in leaf calls. | |
61 // Further Note: DO NOT save/restore bcp/locals. If a caller has | |
62 // already saved them so that it can use rsi/rdi as temporaries | |
63 // then a save/restore here will DESTROY the copy the caller | |
64 // saved! There used to be a save_bcp() that only happened in | |
65 // the ASSERT path (no restore_bcp). Which caused bizarre failures | |
66 // when jvm built with ASSERTs. | |
67 #ifdef ASSERT | |
68 { Label L; | |
304 | 69 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 70 jcc(Assembler::equal, L); |
71 stop("InterpreterMacroAssembler::call_VM_leaf_base: last_sp != NULL"); | |
72 bind(L); | |
73 } | |
74 #endif | |
75 // super call | |
76 MacroAssembler::call_VM_leaf_base(entry_point, number_of_arguments); | |
77 // interpreter specific | |
78 | |
79 // Used to ASSERT that rsi/rdi were equal to frame's bcp/locals | |
80 // but since they may not have been saved (and we don't want to | |
81 // save them here (see note above) the assert is invalid. | |
82 } | |
83 | |
84 | |
85 void InterpreterMacroAssembler::call_VM_base( | |
86 Register oop_result, | |
87 Register java_thread, | |
88 Register last_java_sp, | |
89 address entry_point, | |
90 int number_of_arguments, | |
91 bool check_exceptions | |
92 ) { | |
93 #ifdef ASSERT | |
94 { Label L; | |
304 | 95 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 96 jcc(Assembler::equal, L); |
97 stop("InterpreterMacroAssembler::call_VM_base: last_sp != NULL"); | |
98 bind(L); | |
99 } | |
100 #endif /* ASSERT */ | |
101 // interpreter specific | |
102 // | |
103 // Note: Could avoid restoring locals ptr (callee saved) - however doesn't | |
104 // really make a difference for these runtime calls, since they are | |
105 // slow anyway. Btw., bcp must be saved/restored since it may change | |
106 // due to GC. | |
107 assert(java_thread == noreg , "not expecting a precomputed java thread"); | |
108 save_bcp(); | |
109 // super call | |
110 MacroAssembler::call_VM_base(oop_result, java_thread, last_java_sp, entry_point, number_of_arguments, check_exceptions); | |
111 // interpreter specific | |
112 restore_bcp(); | |
113 restore_locals(); | |
114 } | |
115 | |
116 | |
117 void InterpreterMacroAssembler::check_and_handle_popframe(Register java_thread) { | |
118 if (JvmtiExport::can_pop_frame()) { | |
119 Label L; | |
120 // Initiate popframe handling only if it is not already being processed. If the flag | |
121 // has the popframe_processing bit set, it means that this code is called *during* popframe | |
122 // handling - we don't want to reenter. | |
123 Register pop_cond = java_thread; // Not clear if any other register is available... | |
124 movl(pop_cond, Address(java_thread, JavaThread::popframe_condition_offset())); | |
125 testl(pop_cond, JavaThread::popframe_pending_bit); | |
126 jcc(Assembler::zero, L); | |
127 testl(pop_cond, JavaThread::popframe_processing_bit); | |
128 jcc(Assembler::notZero, L); | |
129 // Call Interpreter::remove_activation_preserving_args_entry() to get the | |
130 // address of the same-named entrypoint in the generated interpreter code. | |
131 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry)); | |
132 jmp(rax); | |
133 bind(L); | |
134 get_thread(java_thread); | |
135 } | |
136 } | |
137 | |
138 | |
139 void InterpreterMacroAssembler::load_earlyret_value(TosState state) { | |
140 get_thread(rcx); | |
141 movl(rcx, Address(rcx, JavaThread::jvmti_thread_state_offset())); | |
142 const Address tos_addr (rcx, JvmtiThreadState::earlyret_tos_offset()); | |
143 const Address oop_addr (rcx, JvmtiThreadState::earlyret_oop_offset()); | |
144 const Address val_addr (rcx, JvmtiThreadState::earlyret_value_offset()); | |
145 const Address val_addr1(rcx, JvmtiThreadState::earlyret_value_offset() | |
146 + in_ByteSize(wordSize)); | |
147 switch (state) { | |
304 | 148 case atos: movptr(rax, oop_addr); |
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149 movptr(oop_addr, NULL_WORD); |
0 | 150 verify_oop(rax, state); break; |
304 | 151 case ltos: |
152 movl(rdx, val_addr1); // fall through | |
0 | 153 case btos: // fall through |
154 case ctos: // fall through | |
155 case stos: // fall through | |
156 case itos: movl(rax, val_addr); break; | |
157 case ftos: fld_s(val_addr); break; | |
158 case dtos: fld_d(val_addr); break; | |
159 case vtos: /* nothing to do */ break; | |
160 default : ShouldNotReachHere(); | |
161 } | |
162 // Clean up tos value in the thread object | |
304 | 163 movl(tos_addr, (int32_t) ilgl); |
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164 movptr(val_addr, NULL_WORD); |
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165 NOT_LP64(movptr(val_addr1, NULL_WORD)); |
0 | 166 } |
167 | |
168 | |
169 void InterpreterMacroAssembler::check_and_handle_earlyret(Register java_thread) { | |
170 if (JvmtiExport::can_force_early_return()) { | |
171 Label L; | |
172 Register tmp = java_thread; | |
304 | 173 movptr(tmp, Address(tmp, JavaThread::jvmti_thread_state_offset())); |
174 testptr(tmp, tmp); | |
0 | 175 jcc(Assembler::zero, L); // if (thread->jvmti_thread_state() == NULL) exit; |
176 | |
177 // Initiate earlyret handling only if it is not already being processed. | |
178 // If the flag has the earlyret_processing bit set, it means that this code | |
179 // is called *during* earlyret handling - we don't want to reenter. | |
180 movl(tmp, Address(tmp, JvmtiThreadState::earlyret_state_offset())); | |
181 cmpl(tmp, JvmtiThreadState::earlyret_pending); | |
182 jcc(Assembler::notEqual, L); | |
183 | |
184 // Call Interpreter::remove_activation_early_entry() to get the address of the | |
185 // same-named entrypoint in the generated interpreter code. | |
186 get_thread(java_thread); | |
304 | 187 movptr(tmp, Address(java_thread, JavaThread::jvmti_thread_state_offset())); |
0 | 188 pushl(Address(tmp, JvmtiThreadState::earlyret_tos_offset())); |
189 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), 1); | |
190 jmp(rax); | |
191 bind(L); | |
192 get_thread(java_thread); | |
193 } | |
194 } | |
195 | |
196 | |
197 void InterpreterMacroAssembler::get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset) { | |
198 assert(bcp_offset >= 0, "bcp is still pointing to start of bytecode"); | |
199 movl(reg, Address(rsi, bcp_offset)); | |
304 | 200 bswapl(reg); |
0 | 201 shrl(reg, 16); |
202 } | |
203 | |
204 | |
1565 | 205 void InterpreterMacroAssembler::get_cache_index_at_bcp(Register reg, int bcp_offset, size_t index_size) { |
0 | 206 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); |
1565 | 207 if (index_size == sizeof(u2)) { |
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208 load_unsigned_short(reg, Address(rsi, bcp_offset)); |
1565 | 209 } else if (index_size == sizeof(u4)) { |
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210 assert(EnableInvokeDynamic, "giant index used only for JSR 292"); |
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211 movl(reg, Address(rsi, bcp_offset)); |
1108 | 212 // Check if the secondary index definition is still ~x, otherwise |
213 // we have to change the following assembler code to calculate the | |
214 // plain index. | |
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215 assert(ConstantPool::decode_invokedynamic_index(~123) == 123, "else change next line"); |
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216 notl(reg); // convert to plain index |
1565 | 217 } else if (index_size == sizeof(u1)) { |
218 load_unsigned_byte(reg, Address(rsi, bcp_offset)); | |
219 } else { | |
220 ShouldNotReachHere(); | |
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221 } |
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222 } |
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223 |
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224 |
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225 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register index, |
1565 | 226 int bcp_offset, size_t index_size) { |
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227 assert_different_registers(cache, index); |
1565 | 228 get_cache_index_at_bcp(index, bcp_offset, index_size); |
304 | 229 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
0 | 230 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below"); |
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231 assert(exact_log2(in_words(ConstantPoolCacheEntry::size())) == 2, "else change next line"); |
304 | 232 shlptr(index, 2); // convert from field index to ConstantPoolCacheEntry index |
0 | 233 } |
234 | |
235 | |
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236 void InterpreterMacroAssembler::get_cache_and_index_and_bytecode_at_bcp(Register cache, |
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237 Register index, |
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238 Register bytecode, |
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239 int byte_no, |
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240 int bcp_offset, |
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241 size_t index_size) { |
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242 get_cache_and_index_at_bcp(cache, index, bcp_offset, index_size); |
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243 movptr(bytecode, Address(cache, index, Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::indices_offset())); |
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244 const int shift_count = (1 + byte_no) * BitsPerByte; |
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245 assert((byte_no == TemplateTable::f1_byte && shift_count == ConstantPoolCacheEntry::bytecode_1_shift) || |
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246 (byte_no == TemplateTable::f2_byte && shift_count == ConstantPoolCacheEntry::bytecode_2_shift), |
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247 "correct shift count"); |
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248 shrptr(bytecode, shift_count); |
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249 assert(ConstantPoolCacheEntry::bytecode_1_mask == ConstantPoolCacheEntry::bytecode_2_mask, "common mask"); |
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250 andptr(bytecode, ConstantPoolCacheEntry::bytecode_1_mask); |
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251 } |
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252 |
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253 |
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254 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp, |
1565 | 255 int bcp_offset, size_t index_size) { |
0 | 256 assert(cache != tmp, "must use different register"); |
1565 | 257 get_cache_index_at_bcp(tmp, bcp_offset, index_size); |
0 | 258 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below"); |
259 // convert from field index to ConstantPoolCacheEntry index | |
260 // and from word offset to byte offset | |
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261 assert(exact_log2(in_bytes(ConstantPoolCacheEntry::size_in_bytes())) == 2 + LogBytesPerWord, "else change next line"); |
0 | 262 shll(tmp, 2 + LogBytesPerWord); |
304 | 263 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
0 | 264 // skip past the header |
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265 addptr(cache, in_bytes(ConstantPoolCache::base_offset())); |
304 | 266 addptr(cache, tmp); // construct pointer to cache entry |
0 | 267 } |
268 | |
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269 // Load object from cpool->resolved_references(index) |
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270 void InterpreterMacroAssembler::load_resolved_reference_at_index( |
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271 Register result, Register index) { |
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272 assert_different_registers(result, index); |
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273 // convert from field index to resolved_references() index and from |
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274 // word index to byte offset. Since this is a java object, it can be compressed |
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275 Register tmp = index; // reuse |
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276 shll(tmp, LogBytesPerHeapOop); |
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277 |
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278 get_constant_pool(result); |
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279 // load pointer for resolved_references[] objArray |
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280 movptr(result, Address(result, ConstantPool::resolved_references_offset_in_bytes())); |
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281 // JNIHandles::resolve(obj); |
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282 movptr(result, Address(result, 0)); |
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283 // Add in the index |
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284 addptr(result, tmp); |
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285 load_heap_oop(result, Address(result, arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
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286 } |
0 | 287 |
288 // Generate a subtype check: branch to ok_is_subtype if sub_klass is | |
289 // a subtype of super_klass. EAX holds the super_klass. Blows ECX. | |
290 // Resets EDI to locals. Register sub_klass cannot be any of the above. | |
291 void InterpreterMacroAssembler::gen_subtype_check( Register Rsub_klass, Label &ok_is_subtype ) { | |
292 assert( Rsub_klass != rax, "rax, holds superklass" ); | |
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293 assert( Rsub_klass != rcx, "used as a temp" ); |
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294 assert( Rsub_klass != rdi, "used as a temp, restored from locals" ); |
0 | 295 |
296 // Profile the not-null value's klass. | |
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297 profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, reloads rdi |
0 | 298 |
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299 // Do the check. |
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300 check_klass_subtype(Rsub_klass, rax, rcx, ok_is_subtype); // blows rcx |
0 | 301 |
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302 // Profile the failure of the check. |
0 | 303 profile_typecheck_failed(rcx); // blows rcx |
304 } | |
305 | |
306 void InterpreterMacroAssembler::f2ieee() { | |
307 if (IEEEPrecision) { | |
308 fstp_s(Address(rsp, 0)); | |
309 fld_s(Address(rsp, 0)); | |
310 } | |
311 } | |
312 | |
313 | |
314 void InterpreterMacroAssembler::d2ieee() { | |
315 if (IEEEPrecision) { | |
316 fstp_d(Address(rsp, 0)); | |
317 fld_d(Address(rsp, 0)); | |
318 } | |
319 } | |
320 | |
321 // Java Expression Stack | |
322 | |
323 void InterpreterMacroAssembler::pop_ptr(Register r) { | |
304 | 324 pop(r); |
0 | 325 } |
326 | |
327 void InterpreterMacroAssembler::pop_i(Register r) { | |
304 | 328 pop(r); |
0 | 329 } |
330 | |
331 void InterpreterMacroAssembler::pop_l(Register lo, Register hi) { | |
304 | 332 pop(lo); |
333 pop(hi); | |
0 | 334 } |
335 | |
336 void InterpreterMacroAssembler::pop_f() { | |
337 fld_s(Address(rsp, 0)); | |
304 | 338 addptr(rsp, 1 * wordSize); |
0 | 339 } |
340 | |
341 void InterpreterMacroAssembler::pop_d() { | |
342 fld_d(Address(rsp, 0)); | |
304 | 343 addptr(rsp, 2 * wordSize); |
0 | 344 } |
345 | |
346 | |
347 void InterpreterMacroAssembler::pop(TosState state) { | |
348 switch (state) { | |
349 case atos: pop_ptr(rax); break; | |
350 case btos: // fall through | |
351 case ctos: // fall through | |
352 case stos: // fall through | |
353 case itos: pop_i(rax); break; | |
354 case ltos: pop_l(rax, rdx); break; | |
355 case ftos: pop_f(); break; | |
356 case dtos: pop_d(); break; | |
357 case vtos: /* nothing to do */ break; | |
358 default : ShouldNotReachHere(); | |
359 } | |
360 verify_oop(rax, state); | |
361 } | |
362 | |
363 void InterpreterMacroAssembler::push_ptr(Register r) { | |
304 | 364 push(r); |
0 | 365 } |
366 | |
367 void InterpreterMacroAssembler::push_i(Register r) { | |
304 | 368 push(r); |
0 | 369 } |
370 | |
371 void InterpreterMacroAssembler::push_l(Register lo, Register hi) { | |
304 | 372 push(hi); |
373 push(lo); | |
0 | 374 } |
375 | |
376 void InterpreterMacroAssembler::push_f() { | |
377 // Do not schedule for no AGI! Never write beyond rsp! | |
304 | 378 subptr(rsp, 1 * wordSize); |
0 | 379 fstp_s(Address(rsp, 0)); |
380 } | |
381 | |
382 void InterpreterMacroAssembler::push_d(Register r) { | |
1506 | 383 // Do not schedule for no AGI! Never write beyond rsp! |
384 subptr(rsp, 2 * wordSize); | |
385 fstp_d(Address(rsp, 0)); | |
0 | 386 } |
387 | |
388 | |
389 void InterpreterMacroAssembler::push(TosState state) { | |
390 verify_oop(rax, state); | |
391 switch (state) { | |
392 case atos: push_ptr(rax); break; | |
393 case btos: // fall through | |
394 case ctos: // fall through | |
395 case stos: // fall through | |
396 case itos: push_i(rax); break; | |
397 case ltos: push_l(rax, rdx); break; | |
398 case ftos: push_f(); break; | |
399 case dtos: push_d(rax); break; | |
400 case vtos: /* nothing to do */ break; | |
401 default : ShouldNotReachHere(); | |
402 } | |
403 } | |
404 | |
405 | |
1506 | 406 // Helpers for swap and dup |
407 void InterpreterMacroAssembler::load_ptr(int n, Register val) { | |
304 | 408 movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n))); |
0 | 409 } |
410 | |
1506 | 411 void InterpreterMacroAssembler::store_ptr(int n, Register val) { |
412 movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val); | |
0 | 413 } |
414 | |
710 | 415 void InterpreterMacroAssembler::prepare_to_jump_from_interpreted() { |
0 | 416 // set sender sp |
304 | 417 lea(rsi, Address(rsp, wordSize)); |
0 | 418 // record last_sp |
304 | 419 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), rsi); |
710 | 420 } |
421 | |
422 | |
423 // Jump to from_interpreted entry of a call unless single stepping is possible | |
424 // in this thread in which case we must call the i2i entry | |
425 void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) { | |
426 prepare_to_jump_from_interpreted(); | |
0 | 427 |
428 if (JvmtiExport::can_post_interpreter_events()) { | |
429 Label run_compiled_code; | |
430 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
431 // compiled code in threads for which the event is enabled. Check here for | |
432 // interp_only_mode if these events CAN be enabled. | |
433 get_thread(temp); | |
434 // interp_only is an int, on little endian it is sufficient to test the byte only | |
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435 // Is a cmpl faster? |
0 | 436 cmpb(Address(temp, JavaThread::interp_only_mode_offset()), 0); |
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437 jccb(Assembler::zero, run_compiled_code); |
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438 jmp(Address(method, Method::interpreter_entry_offset())); |
0 | 439 bind(run_compiled_code); |
440 } | |
441 | |
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442 jmp(Address(method, Method::from_interpreted_offset())); |
0 | 443 |
444 } | |
445 | |
446 | |
447 // The following two routines provide a hook so that an implementation | |
448 // can schedule the dispatch in two parts. Intel does not do this. | |
449 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) { | |
450 // Nothing Intel-specific to be done here. | |
451 } | |
452 | |
453 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) { | |
454 dispatch_next(state, step); | |
455 } | |
456 | |
457 void InterpreterMacroAssembler::dispatch_base(TosState state, address* table, | |
458 bool verifyoop) { | |
459 verify_FPU(1, state); | |
460 if (VerifyActivationFrameSize) { | |
461 Label L; | |
304 | 462 mov(rcx, rbp); |
463 subptr(rcx, rsp); | |
0 | 464 int min_frame_size = (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * wordSize; |
304 | 465 cmpptr(rcx, min_frame_size); |
0 | 466 jcc(Assembler::greaterEqual, L); |
467 stop("broken stack frame"); | |
468 bind(L); | |
469 } | |
470 if (verifyoop) verify_oop(rax, state); | |
304 | 471 Address index(noreg, rbx, Address::times_ptr); |
0 | 472 ExternalAddress tbl((address)table); |
473 ArrayAddress dispatch(tbl, index); | |
474 jump(dispatch); | |
475 } | |
476 | |
477 | |
478 void InterpreterMacroAssembler::dispatch_only(TosState state) { | |
479 dispatch_base(state, Interpreter::dispatch_table(state)); | |
480 } | |
481 | |
482 | |
483 void InterpreterMacroAssembler::dispatch_only_normal(TosState state) { | |
484 dispatch_base(state, Interpreter::normal_table(state)); | |
485 } | |
486 | |
487 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) { | |
488 dispatch_base(state, Interpreter::normal_table(state), false); | |
489 } | |
490 | |
491 | |
492 void InterpreterMacroAssembler::dispatch_next(TosState state, int step) { | |
493 // load next bytecode (load before advancing rsi to prevent AGI) | |
494 load_unsigned_byte(rbx, Address(rsi, step)); | |
495 // advance rsi | |
496 increment(rsi, step); | |
497 dispatch_base(state, Interpreter::dispatch_table(state)); | |
498 } | |
499 | |
500 | |
501 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
502 // load current bytecode | |
503 load_unsigned_byte(rbx, Address(rsi, 0)); | |
504 dispatch_base(state, table); | |
505 } | |
506 | |
507 // remove activation | |
508 // | |
509 // Unlock the receiver if this is a synchronized method. | |
510 // Unlock any Java monitors from syncronized blocks. | |
511 // Remove the activation from the stack. | |
512 // | |
513 // If there are locked Java monitors | |
514 // If throw_monitor_exception | |
515 // throws IllegalMonitorStateException | |
516 // Else if install_monitor_exception | |
517 // installs IllegalMonitorStateException | |
518 // Else | |
519 // no error processing | |
520 void InterpreterMacroAssembler::remove_activation(TosState state, Register ret_addr, | |
521 bool throw_monitor_exception, | |
522 bool install_monitor_exception, | |
523 bool notify_jvmdi) { | |
524 // Note: Registers rax, rdx and FPU ST(0) may be in use for the result | |
525 // check if synchronized method | |
526 Label unlocked, unlock, no_unlock; | |
527 | |
528 get_thread(rcx); | |
529 const Address do_not_unlock_if_synchronized(rcx, | |
530 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
531 | |
532 movbool(rbx, do_not_unlock_if_synchronized); | |
304 | 533 mov(rdi,rbx); |
0 | 534 movbool(do_not_unlock_if_synchronized, false); // reset the flag |
535 | |
304 | 536 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); // get method access flags |
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537 movl(rcx, Address(rbx, Method::access_flags_offset())); |
0 | 538 |
539 testl(rcx, JVM_ACC_SYNCHRONIZED); | |
540 jcc(Assembler::zero, unlocked); | |
541 | |
542 // Don't unlock anything if the _do_not_unlock_if_synchronized flag | |
543 // is set. | |
304 | 544 mov(rcx,rdi); |
0 | 545 testbool(rcx); |
546 jcc(Assembler::notZero, no_unlock); | |
547 | |
548 // unlock monitor | |
549 push(state); // save result | |
550 | |
551 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
552 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
553 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); | |
304 | 554 lea (rdx, monitor); // address of first monitor |
0 | 555 |
304 | 556 movptr (rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); |
557 testptr(rax, rax); | |
558 jcc (Assembler::notZero, unlock); | |
0 | 559 |
560 pop(state); | |
561 if (throw_monitor_exception) { | |
562 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
563 | |
564 // Entry already unlocked, need to throw exception | |
565 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
566 should_not_reach_here(); | |
567 } else { | |
568 // Monitor already unlocked during a stack unroll. | |
569 // If requested, install an illegal_monitor_state_exception. | |
570 // Continue with stack unrolling. | |
571 if (install_monitor_exception) { | |
572 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
573 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
574 } | |
575 jmp(unlocked); | |
576 } | |
577 | |
578 bind(unlock); | |
579 unlock_object(rdx); | |
580 pop(state); | |
581 | |
582 // Check that for block-structured locking (i.e., that all locked objects has been unlocked) | |
583 bind(unlocked); | |
584 | |
585 // rax, rdx: Might contain return value | |
586 | |
587 // Check that all monitors are unlocked | |
588 { | |
589 Label loop, exception, entry, restart; | |
590 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
591 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
592 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
593 | |
594 bind(restart); | |
304 | 595 movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry |
596 lea(rbx, monitor_block_bot); // points to word before bottom of monitor block | |
0 | 597 jmp(entry); |
598 | |
599 // Entry already locked, need to throw exception | |
600 bind(exception); | |
601 | |
602 if (throw_monitor_exception) { | |
603 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
604 | |
605 // Throw exception | |
606 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
607 should_not_reach_here(); | |
608 } else { | |
609 // Stack unrolling. Unlock object and install illegal_monitor_exception | |
610 // Unlock does not block, so don't have to worry about the frame | |
611 | |
612 push(state); | |
304 | 613 mov(rdx, rcx); |
0 | 614 unlock_object(rdx); |
615 pop(state); | |
616 | |
617 if (install_monitor_exception) { | |
618 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
619 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
620 } | |
621 | |
622 jmp(restart); | |
623 } | |
624 | |
625 bind(loop); | |
304 | 626 cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used |
0 | 627 jcc(Assembler::notEqual, exception); |
628 | |
304 | 629 addptr(rcx, entry_size); // otherwise advance to next entry |
0 | 630 bind(entry); |
304 | 631 cmpptr(rcx, rbx); // check if bottom reached |
0 | 632 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
633 } | |
634 | |
635 bind(no_unlock); | |
636 | |
637 // jvmti support | |
638 if (notify_jvmdi) { | |
639 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA | |
640 } else { | |
641 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA | |
642 } | |
643 | |
644 // remove activation | |
304 | 645 movptr(rbx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 646 leave(); // remove frame anchor |
304 | 647 pop(ret_addr); // get return address |
648 mov(rsp, rbx); // set sp to sender sp | |
0 | 649 if (UseSSE) { |
650 // float and double are returned in xmm register in SSE-mode | |
651 if (state == ftos && UseSSE >= 1) { | |
304 | 652 subptr(rsp, wordSize); |
0 | 653 fstp_s(Address(rsp, 0)); |
654 movflt(xmm0, Address(rsp, 0)); | |
304 | 655 addptr(rsp, wordSize); |
0 | 656 } else if (state == dtos && UseSSE >= 2) { |
304 | 657 subptr(rsp, 2*wordSize); |
0 | 658 fstp_d(Address(rsp, 0)); |
659 movdbl(xmm0, Address(rsp, 0)); | |
304 | 660 addptr(rsp, 2*wordSize); |
0 | 661 } |
662 } | |
663 } | |
664 | |
665 #endif /* !CC_INTERP */ | |
666 | |
667 | |
668 // Lock object | |
669 // | |
670 // Argument: rdx : Points to BasicObjectLock to be used for locking. Must | |
671 // be initialized with object to lock | |
672 void InterpreterMacroAssembler::lock_object(Register lock_reg) { | |
673 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
674 | |
675 if (UseHeavyMonitors) { | |
676 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
677 } else { | |
678 | |
679 Label done; | |
680 | |
681 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
682 const Register obj_reg = rcx; // Will contain the oop | |
683 | |
684 const int obj_offset = BasicObjectLock::obj_offset_in_bytes(); | |
685 const int lock_offset = BasicObjectLock::lock_offset_in_bytes (); | |
686 const int mark_offset = lock_offset + BasicLock::displaced_header_offset_in_bytes(); | |
687 | |
688 Label slow_case; | |
689 | |
690 // Load object pointer into obj_reg %rcx | |
304 | 691 movptr(obj_reg, Address(lock_reg, obj_offset)); |
0 | 692 |
693 if (UseBiasedLocking) { | |
694 // Note: we use noreg for the temporary register since it's hard | |
695 // to come up with a free register on all incoming code paths | |
696 biased_locking_enter(lock_reg, obj_reg, swap_reg, noreg, false, done, &slow_case); | |
697 } | |
698 | |
699 // Load immediate 1 into swap_reg %rax, | |
304 | 700 movptr(swap_reg, (int32_t)1); |
0 | 701 |
702 // Load (object->mark() | 1) into swap_reg %rax, | |
304 | 703 orptr(swap_reg, Address(obj_reg, 0)); |
0 | 704 |
705 // Save (object->mark() | 1) into BasicLock's displaced header | |
304 | 706 movptr(Address(lock_reg, mark_offset), swap_reg); |
0 | 707 |
708 assert(lock_offset == 0, "displached header must be first word in BasicObjectLock"); | |
709 if (os::is_MP()) { | |
710 lock(); | |
711 } | |
304 | 712 cmpxchgptr(lock_reg, Address(obj_reg, 0)); |
0 | 713 if (PrintBiasedLockingStatistics) { |
714 cond_inc32(Assembler::zero, | |
715 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
716 } | |
717 jcc(Assembler::zero, done); | |
718 | |
719 // Test if the oopMark is an obvious stack pointer, i.e., | |
720 // 1) (mark & 3) == 0, and | |
721 // 2) rsp <= mark < mark + os::pagesize() | |
722 // | |
723 // These 3 tests can be done by evaluating the following | |
724 // expression: ((mark - rsp) & (3 - os::vm_page_size())), | |
725 // assuming both stack pointer and pagesize have their | |
726 // least significant 2 bits clear. | |
727 // NOTE: the oopMark is in swap_reg %rax, as the result of cmpxchg | |
304 | 728 subptr(swap_reg, rsp); |
729 andptr(swap_reg, 3 - os::vm_page_size()); | |
0 | 730 |
731 // Save the test result, for recursive case, the result is zero | |
304 | 732 movptr(Address(lock_reg, mark_offset), swap_reg); |
0 | 733 |
734 if (PrintBiasedLockingStatistics) { | |
735 cond_inc32(Assembler::zero, | |
736 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
737 } | |
738 jcc(Assembler::zero, done); | |
739 | |
740 bind(slow_case); | |
741 | |
742 // Call the runtime routine for slow case | |
743 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
744 | |
745 bind(done); | |
746 } | |
747 } | |
748 | |
749 | |
750 // Unlocks an object. Used in monitorexit bytecode and remove_activation. | |
751 // | |
752 // Argument: rdx : Points to BasicObjectLock structure for lock | |
753 // Throw an IllegalMonitorException if object is not locked by current thread | |
754 // | |
755 // Uses: rax, rbx, rcx, rdx | |
756 void InterpreterMacroAssembler::unlock_object(Register lock_reg) { | |
757 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
758 | |
759 if (UseHeavyMonitors) { | |
760 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); | |
761 } else { | |
762 Label done; | |
763 | |
764 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
765 const Register header_reg = rbx; // Will contain the old oopMark | |
766 const Register obj_reg = rcx; // Will contain the oop | |
767 | |
768 save_bcp(); // Save in case of exception | |
769 | |
770 // Convert from BasicObjectLock structure to object and BasicLock structure | |
771 // Store the BasicLock address into %rax, | |
304 | 772 lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes())); |
0 | 773 |
774 // Load oop into obj_reg(%rcx) | |
304 | 775 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes ())); |
0 | 776 |
777 // Free entry | |
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778 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), NULL_WORD); |
0 | 779 |
780 if (UseBiasedLocking) { | |
781 biased_locking_exit(obj_reg, header_reg, done); | |
782 } | |
783 | |
784 // Load the old header from BasicLock structure | |
304 | 785 movptr(header_reg, Address(swap_reg, BasicLock::displaced_header_offset_in_bytes())); |
0 | 786 |
787 // Test for recursion | |
304 | 788 testptr(header_reg, header_reg); |
0 | 789 |
790 // zero for recursive case | |
791 jcc(Assembler::zero, done); | |
792 | |
793 // Atomic swap back the old header | |
794 if (os::is_MP()) lock(); | |
304 | 795 cmpxchgptr(header_reg, Address(obj_reg, 0)); |
0 | 796 |
797 // zero for recursive case | |
798 jcc(Assembler::zero, done); | |
799 | |
800 // Call the runtime routine for slow case. | |
304 | 801 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), obj_reg); // restore obj |
0 | 802 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); |
803 | |
804 bind(done); | |
805 | |
806 restore_bcp(); | |
807 } | |
808 } | |
809 | |
810 | |
811 #ifndef CC_INTERP | |
812 | |
813 // Test ImethodDataPtr. If it is null, continue at the specified label | |
814 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, Label& zero_continue) { | |
815 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 816 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize)); |
817 testptr(mdp, mdp); | |
0 | 818 jcc(Assembler::zero, zero_continue); |
819 } | |
820 | |
821 | |
822 // Set the method data pointer for the current bcp. | |
823 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
824 assert(ProfileInterpreter, "must be profiling interpreter"); | |
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825 Label set_mdp; |
304 | 826 push(rax); |
827 push(rbx); | |
0 | 828 |
829 get_method(rbx); | |
830 // Test MDO to avoid the call if it is NULL. | |
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831 movptr(rax, Address(rbx, in_bytes(Method::method_data_offset()))); |
304 | 832 testptr(rax, rax); |
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833 jcc(Assembler::zero, set_mdp); |
0 | 834 // rbx,: method |
835 // rsi: bcp | |
836 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, rsi); | |
837 // rax,: mdi | |
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838 // mdo is guaranteed to be non-zero here, we checked for it before the call. |
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839 movptr(rbx, Address(rbx, in_bytes(Method::method_data_offset()))); |
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840 addptr(rbx, in_bytes(MethodData::data_offset())); |
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841 addptr(rax, rbx); |
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842 bind(set_mdp); |
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843 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax); |
304 | 844 pop(rbx); |
845 pop(rax); | |
0 | 846 } |
847 | |
848 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
849 assert(ProfileInterpreter, "must be profiling interpreter"); | |
850 #ifdef ASSERT | |
851 Label verify_continue; | |
304 | 852 push(rax); |
853 push(rbx); | |
854 push(rcx); | |
855 push(rdx); | |
0 | 856 test_method_data_pointer(rcx, verify_continue); // If mdp is zero, continue |
857 get_method(rbx); | |
858 | |
859 // If the mdp is valid, it will point to a DataLayout header which is | |
860 // consistent with the bcp. The converse is highly probable also. | |
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861 load_unsigned_short(rdx, Address(rcx, in_bytes(DataLayout::bci_offset()))); |
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862 addptr(rdx, Address(rbx, Method::const_offset())); |
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863 lea(rdx, Address(rdx, ConstMethod::codes_offset())); |
304 | 864 cmpptr(rdx, rsi); |
0 | 865 jcc(Assembler::equal, verify_continue); |
866 // rbx,: method | |
867 // rsi: bcp | |
868 // rcx: mdp | |
869 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), rbx, rsi, rcx); | |
870 bind(verify_continue); | |
304 | 871 pop(rdx); |
872 pop(rcx); | |
873 pop(rbx); | |
874 pop(rax); | |
0 | 875 #endif // ASSERT |
876 } | |
877 | |
878 | |
879 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, int constant, Register value) { | |
304 | 880 // %%% this seems to be used to store counter data which is surely 32bits |
881 // however 64bit side stores 64 bits which seems wrong | |
0 | 882 assert(ProfileInterpreter, "must be profiling interpreter"); |
883 Address data(mdp_in, constant); | |
304 | 884 movptr(data, value); |
0 | 885 } |
886 | |
887 | |
888 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
889 int constant, | |
890 bool decrement) { | |
891 // Counter address | |
892 Address data(mdp_in, constant); | |
893 | |
894 increment_mdp_data_at(data, decrement); | |
895 } | |
896 | |
897 | |
898 void InterpreterMacroAssembler::increment_mdp_data_at(Address data, | |
899 bool decrement) { | |
900 | |
901 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
902 assert(ProfileInterpreter, "must be profiling interpreter"); | |
903 | |
304 | 904 // %%% 64bit treats this as 64 bit which seems unlikely |
0 | 905 if (decrement) { |
906 // Decrement the register. Set condition codes. | |
907 addl(data, -DataLayout::counter_increment); | |
908 // If the decrement causes the counter to overflow, stay negative | |
909 Label L; | |
910 jcc(Assembler::negative, L); | |
911 addl(data, DataLayout::counter_increment); | |
912 bind(L); | |
913 } else { | |
914 assert(DataLayout::counter_increment == 1, | |
915 "flow-free idiom only works with 1"); | |
916 // Increment the register. Set carry flag. | |
917 addl(data, DataLayout::counter_increment); | |
918 // If the increment causes the counter to overflow, pull back by 1. | |
919 sbbl(data, 0); | |
920 } | |
921 } | |
922 | |
923 | |
924 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
925 Register reg, | |
926 int constant, | |
927 bool decrement) { | |
928 Address data(mdp_in, reg, Address::times_1, constant); | |
929 | |
930 increment_mdp_data_at(data, decrement); | |
931 } | |
932 | |
933 | |
934 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, int flag_byte_constant) { | |
935 assert(ProfileInterpreter, "must be profiling interpreter"); | |
936 int header_offset = in_bytes(DataLayout::header_offset()); | |
937 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant); | |
938 // Set the flag | |
939 orl(Address(mdp_in, header_offset), header_bits); | |
940 } | |
941 | |
942 | |
943 | |
944 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in, | |
945 int offset, | |
946 Register value, | |
947 Register test_value_out, | |
948 Label& not_equal_continue) { | |
949 assert(ProfileInterpreter, "must be profiling interpreter"); | |
950 if (test_value_out == noreg) { | |
304 | 951 cmpptr(value, Address(mdp_in, offset)); |
0 | 952 } else { |
953 // Put the test value into a register, so caller can use it: | |
304 | 954 movptr(test_value_out, Address(mdp_in, offset)); |
955 cmpptr(test_value_out, value); | |
0 | 956 } |
957 jcc(Assembler::notEqual, not_equal_continue); | |
958 } | |
959 | |
960 | |
961 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, int offset_of_disp) { | |
962 assert(ProfileInterpreter, "must be profiling interpreter"); | |
963 Address disp_address(mdp_in, offset_of_disp); | |
304 | 964 addptr(mdp_in,disp_address); |
965 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 966 } |
967 | |
968 | |
969 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp) { | |
970 assert(ProfileInterpreter, "must be profiling interpreter"); | |
971 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp); | |
304 | 972 addptr(mdp_in, disp_address); |
973 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 974 } |
975 | |
976 | |
977 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, int constant) { | |
978 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 979 addptr(mdp_in, constant); |
980 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 981 } |
982 | |
983 | |
984 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) { | |
985 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 986 push(return_bci); // save/restore across call_VM |
0 | 987 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); |
304 | 988 pop(return_bci); |
0 | 989 } |
990 | |
991 | |
992 void InterpreterMacroAssembler::profile_taken_branch(Register mdp, Register bumped_count) { | |
993 if (ProfileInterpreter) { | |
994 Label profile_continue; | |
995 | |
996 // If no method data exists, go to profile_continue. | |
997 // Otherwise, assign to mdp | |
998 test_method_data_pointer(mdp, profile_continue); | |
999 | |
1000 // We are taking a branch. Increment the taken count. | |
1001 // We inline increment_mdp_data_at to return bumped_count in a register | |
1002 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset())); | |
1003 Address data(mdp, in_bytes(JumpData::taken_offset())); | |
304 | 1004 |
1005 // %%% 64bit treats these cells as 64 bit but they seem to be 32 bit | |
0 | 1006 movl(bumped_count,data); |
1007 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
1008 addl(bumped_count, DataLayout::counter_increment); | |
1009 sbbl(bumped_count, 0); | |
1010 movl(data,bumped_count); // Store back out | |
1011 | |
1012 // The method data pointer needs to be updated to reflect the new target. | |
1013 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset())); | |
1014 bind (profile_continue); | |
1015 } | |
1016 } | |
1017 | |
1018 | |
1019 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) { | |
1020 if (ProfileInterpreter) { | |
1021 Label profile_continue; | |
1022 | |
1023 // If no method data exists, go to profile_continue. | |
1024 test_method_data_pointer(mdp, profile_continue); | |
1025 | |
1026 // We are taking a branch. Increment the not taken count. | |
1027 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset())); | |
1028 | |
1029 // The method data pointer needs to be updated to correspond to the next bytecode | |
1030 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size())); | |
1031 bind (profile_continue); | |
1032 } | |
1033 } | |
1034 | |
1035 | |
1036 void InterpreterMacroAssembler::profile_call(Register mdp) { | |
1037 if (ProfileInterpreter) { | |
1038 Label profile_continue; | |
1039 | |
1040 // If no method data exists, go to profile_continue. | |
1041 test_method_data_pointer(mdp, profile_continue); | |
1042 | |
1043 // We are making a call. Increment the count. | |
1044 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1045 | |
1046 // The method data pointer needs to be updated to reflect the new target. | |
1047 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size())); | |
1048 bind (profile_continue); | |
1049 } | |
1050 } | |
1051 | |
1052 | |
1053 void InterpreterMacroAssembler::profile_final_call(Register mdp) { | |
1054 if (ProfileInterpreter) { | |
1055 Label profile_continue; | |
1056 | |
1057 // If no method data exists, go to profile_continue. | |
1058 test_method_data_pointer(mdp, profile_continue); | |
1059 | |
1060 // We are making a call. Increment the count. | |
1061 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1062 | |
1063 // The method data pointer needs to be updated to reflect the new target. | |
1064 update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size())); | |
1065 bind (profile_continue); | |
1066 } | |
1067 } | |
1068 | |
1069 | |
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1070 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, Register mdp, |
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1071 Register reg2, |
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1072 bool receiver_can_be_null) { |
0 | 1073 if (ProfileInterpreter) { |
1074 Label profile_continue; | |
1075 | |
1076 // If no method data exists, go to profile_continue. | |
1077 test_method_data_pointer(mdp, profile_continue); | |
1078 | |
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1079 Label skip_receiver_profile; |
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1080 if (receiver_can_be_null) { |
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1081 Label not_null; |
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1082 testptr(receiver, receiver); |
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1083 jccb(Assembler::notZero, not_null); |
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1084 // We are making a call. Increment the count for null receiver. |
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1085 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1086 jmp(skip_receiver_profile); |
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1087 bind(not_null); |
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1088 } |
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1089 |
0 | 1090 // Record the receiver type. |
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1091 record_klass_in_profile(receiver, mdp, reg2, true); |
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1092 bind(skip_receiver_profile); |
0 | 1093 |
1094 // The method data pointer needs to be updated to reflect the new target. | |
1095 update_mdp_by_constant(mdp, | |
1096 in_bytes(VirtualCallData:: | |
1097 virtual_call_data_size())); | |
1098 bind(profile_continue); | |
1099 } | |
1100 } | |
1101 | |
1102 | |
1103 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
1104 Register receiver, Register mdp, | |
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1105 Register reg2, int start_row, |
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1106 Label& done, bool is_virtual_call) { |
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1107 if (TypeProfileWidth == 0) { |
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1108 if (is_virtual_call) { |
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1109 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1110 } |
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1111 return; |
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1112 } |
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1113 |
0 | 1114 int last_row = VirtualCallData::row_limit() - 1; |
1115 assert(start_row <= last_row, "must be work left to do"); | |
1116 // Test this row for both the receiver and for null. | |
1117 // Take any of three different outcomes: | |
1118 // 1. found receiver => increment count and goto done | |
1119 // 2. found null => keep looking for case 1, maybe allocate this cell | |
1120 // 3. found something else => keep looking for cases 1 and 2 | |
1121 // Case 3 is handled by a recursive call. | |
1122 for (int row = start_row; row <= last_row; row++) { | |
1123 Label next_test; | |
1124 bool test_for_null_also = (row == start_row); | |
1125 | |
1126 // See if the receiver is receiver[n]. | |
1127 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
1128 test_mdp_data_at(mdp, recvr_offset, receiver, | |
1129 (test_for_null_also ? reg2 : noreg), | |
1130 next_test); | |
1131 // (Reg2 now contains the receiver from the CallData.) | |
1132 | |
1133 // The receiver is receiver[n]. Increment count[n]. | |
1134 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
1135 increment_mdp_data_at(mdp, count_offset); | |
1136 jmp(done); | |
1137 bind(next_test); | |
1138 | |
1139 if (row == start_row) { | |
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1140 Label found_null; |
0 | 1141 // Failed the equality check on receiver[n]... Test for null. |
304 | 1142 testptr(reg2, reg2); |
0 | 1143 if (start_row == last_row) { |
1144 // The only thing left to do is handle the null case. | |
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1145 if (is_virtual_call) { |
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1146 jccb(Assembler::zero, found_null); |
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1147 // Receiver did not match any saved receiver and there is no empty row for it. |
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1148 // Increment total counter to indicate polymorphic case. |
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1149 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1150 jmp(done); |
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1151 bind(found_null); |
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1152 } else { |
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1153 jcc(Assembler::notZero, done); |
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1154 } |
0 | 1155 break; |
1156 } | |
1157 // Since null is rare, make it be the branch-taken case. | |
1158 jcc(Assembler::zero, found_null); | |
1159 | |
1160 // Put all the "Case 3" tests here. | |
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1161 record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done, is_virtual_call); |
0 | 1162 |
1163 // Found a null. Keep searching for a matching receiver, | |
1164 // but remember that this is an empty (unused) slot. | |
1165 bind(found_null); | |
1166 } | |
1167 } | |
1168 | |
1169 // In the fall-through case, we found no matching receiver, but we | |
1170 // observed the receiver[start_row] is NULL. | |
1171 | |
1172 // Fill in the receiver field and increment the count. | |
1173 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
1174 set_mdp_data_at(mdp, recvr_offset, receiver); | |
1175 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
3960 | 1176 movptr(reg2, (intptr_t)DataLayout::counter_increment); |
0 | 1177 set_mdp_data_at(mdp, count_offset, reg2); |
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1178 if (start_row > 0) { |
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1179 jmp(done); |
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1180 } |
0 | 1181 } |
1182 | |
1183 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver, | |
1206
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1184 Register mdp, Register reg2, |
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1185 bool is_virtual_call) { |
0 | 1186 assert(ProfileInterpreter, "must be profiling"); |
1187 Label done; | |
1188 | |
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1189 record_klass_in_profile_helper(receiver, mdp, reg2, 0, done, is_virtual_call); |
0 | 1190 |
1191 bind (done); | |
1192 } | |
1193 | |
1194 void InterpreterMacroAssembler::profile_ret(Register return_bci, Register mdp) { | |
1195 if (ProfileInterpreter) { | |
1196 Label profile_continue; | |
1197 uint row; | |
1198 | |
1199 // If no method data exists, go to profile_continue. | |
1200 test_method_data_pointer(mdp, profile_continue); | |
1201 | |
1202 // Update the total ret count. | |
1203 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1204 | |
1205 for (row = 0; row < RetData::row_limit(); row++) { | |
1206 Label next_test; | |
1207 | |
1208 // See if return_bci is equal to bci[n]: | |
1209 test_mdp_data_at(mdp, in_bytes(RetData::bci_offset(row)), return_bci, | |
1210 noreg, next_test); | |
1211 | |
1212 // return_bci is equal to bci[n]. Increment the count. | |
1213 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row))); | |
1214 | |
1215 // The method data pointer needs to be updated to reflect the new target. | |
1216 update_mdp_by_offset(mdp, in_bytes(RetData::bci_displacement_offset(row))); | |
1217 jmp(profile_continue); | |
1218 bind(next_test); | |
1219 } | |
1220 | |
1221 update_mdp_for_ret(return_bci); | |
1222 | |
1223 bind (profile_continue); | |
1224 } | |
1225 } | |
1226 | |
1227 | |
1228 void InterpreterMacroAssembler::profile_null_seen(Register mdp) { | |
1229 if (ProfileInterpreter) { | |
1230 Label profile_continue; | |
1231 | |
1232 // If no method data exists, go to profile_continue. | |
1233 test_method_data_pointer(mdp, profile_continue); | |
1234 | |
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1235 set_mdp_flag_at(mdp, BitData::null_seen_byte_constant()); |
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1236 |
0 | 1237 // The method data pointer needs to be updated. |
1238 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1239 if (TypeProfileCasts) { | |
1240 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1241 } | |
1242 update_mdp_by_constant(mdp, mdp_delta); | |
1243 | |
1244 bind (profile_continue); | |
1245 } | |
1246 } | |
1247 | |
1248 | |
1249 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) { | |
1250 if (ProfileInterpreter && TypeProfileCasts) { | |
1251 Label profile_continue; | |
1252 | |
1253 // If no method data exists, go to profile_continue. | |
1254 test_method_data_pointer(mdp, profile_continue); | |
1255 | |
1256 int count_offset = in_bytes(CounterData::count_offset()); | |
1257 // Back up the address, since we have already bumped the mdp. | |
1258 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
1259 | |
1260 // *Decrement* the counter. We expect to see zero or small negatives. | |
1261 increment_mdp_data_at(mdp, count_offset, true); | |
1262 | |
1263 bind (profile_continue); | |
1264 } | |
1265 } | |
1266 | |
1267 | |
1268 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2) | |
1269 { | |
1270 if (ProfileInterpreter) { | |
1271 Label profile_continue; | |
1272 | |
1273 // If no method data exists, go to profile_continue. | |
1274 test_method_data_pointer(mdp, profile_continue); | |
1275 | |
1276 // The method data pointer needs to be updated. | |
1277 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1278 if (TypeProfileCasts) { | |
1279 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1280 | |
1281 // Record the object type. | |
1206
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1282 record_klass_in_profile(klass, mdp, reg2, false); |
0 | 1283 assert(reg2 == rdi, "we know how to fix this blown reg"); |
1284 restore_locals(); // Restore EDI | |
1285 } | |
1286 update_mdp_by_constant(mdp, mdp_delta); | |
1287 | |
1288 bind(profile_continue); | |
1289 } | |
1290 } | |
1291 | |
1292 | |
1293 void InterpreterMacroAssembler::profile_switch_default(Register mdp) { | |
1294 if (ProfileInterpreter) { | |
1295 Label profile_continue; | |
1296 | |
1297 // If no method data exists, go to profile_continue. | |
1298 test_method_data_pointer(mdp, profile_continue); | |
1299 | |
1300 // Update the default case count | |
1301 increment_mdp_data_at(mdp, in_bytes(MultiBranchData::default_count_offset())); | |
1302 | |
1303 // The method data pointer needs to be updated. | |
1304 update_mdp_by_offset(mdp, in_bytes(MultiBranchData::default_displacement_offset())); | |
1305 | |
1306 bind (profile_continue); | |
1307 } | |
1308 } | |
1309 | |
1310 | |
1311 void InterpreterMacroAssembler::profile_switch_case(Register index, Register mdp, Register reg2) { | |
1312 if (ProfileInterpreter) { | |
1313 Label profile_continue; | |
1314 | |
1315 // If no method data exists, go to profile_continue. | |
1316 test_method_data_pointer(mdp, profile_continue); | |
1317 | |
1318 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes() | |
3960 | 1319 movptr(reg2, (intptr_t)in_bytes(MultiBranchData::per_case_size())); |
304 | 1320 // index is positive and so should have correct value if this code were |
1321 // used on 64bits | |
1322 imulptr(index, reg2); | |
1323 addptr(index, in_bytes(MultiBranchData::case_array_offset())); | |
0 | 1324 |
1325 // Update the case count | |
1326 increment_mdp_data_at(mdp, index, in_bytes(MultiBranchData::relative_count_offset())); | |
1327 | |
1328 // The method data pointer needs to be updated. | |
1329 update_mdp_by_offset(mdp, index, in_bytes(MultiBranchData::relative_displacement_offset())); | |
1330 | |
1331 bind (profile_continue); | |
1332 } | |
1333 } | |
1334 | |
1335 #endif // !CC_INTERP | |
1336 | |
1337 | |
1338 | |
1339 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { | |
1340 if (state == atos) MacroAssembler::verify_oop(reg); | |
1341 } | |
1342 | |
1343 | |
1344 #ifndef CC_INTERP | |
1345 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
1346 if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth); | |
1347 } | |
1348 | |
1349 #endif /* CC_INTERP */ | |
1350 | |
1351 | |
1352 void InterpreterMacroAssembler::notify_method_entry() { | |
1353 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
1354 // track stack depth. If it is possible to enter interp_only_mode we add | |
1355 // the code to check if the event should be sent. | |
1356 if (JvmtiExport::can_post_interpreter_events()) { | |
1357 Label L; | |
1358 get_thread(rcx); | |
1359 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
1360 testl(rcx,rcx); | |
1361 jcc(Assembler::zero, L); | |
1362 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry)); | |
1363 bind(L); | |
1364 } | |
1365 | |
1366 { | |
1367 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
1368 get_thread(rcx); | |
1369 get_method(rbx); | |
1370 call_VM_leaf( | |
1371 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), rcx, rbx); | |
1372 } | |
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1373 |
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1374 // RedefineClasses() tracing support for obsolete method entry |
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1375 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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1376 get_thread(rcx); |
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1377 get_method(rbx); |
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1378 call_VM_leaf( |
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1379 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), |
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1380 rcx, rbx); |
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1381 } |
0 | 1382 } |
1383 | |
1384 | |
1385 void InterpreterMacroAssembler::notify_method_exit( | |
1386 TosState state, NotifyMethodExitMode mode) { | |
1387 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
1388 // track stack depth. If it is possible to enter interp_only_mode we add | |
1389 // the code to check if the event should be sent. | |
1390 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { | |
1391 Label L; | |
1392 // Note: frame::interpreter_frame_result has a dependency on how the | |
1393 // method result is saved across the call to post_method_exit. If this | |
1394 // is changed then the interpreter_frame_result implementation will | |
1395 // need to be updated too. | |
1396 | |
1397 // For c++ interpreter the result is always stored at a known location in the frame | |
1398 // template interpreter will leave it on the top of the stack. | |
1399 NOT_CC_INTERP(push(state);) | |
1400 get_thread(rcx); | |
1401 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
1402 testl(rcx,rcx); | |
1403 jcc(Assembler::zero, L); | |
1404 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit)); | |
1405 bind(L); | |
1406 NOT_CC_INTERP(pop(state);) | |
1407 } | |
1408 | |
1409 { | |
1410 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
304 | 1411 NOT_CC_INTERP(push(state)); |
0 | 1412 get_thread(rbx); |
1413 get_method(rcx); | |
1414 call_VM_leaf( | |
1415 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), | |
1416 rbx, rcx); | |
304 | 1417 NOT_CC_INTERP(pop(state)); |
0 | 1418 } |
1419 } | |
1783 | 1420 |
1421 // Jump if ((*counter_addr += increment) & mask) satisfies the condition. | |
1422 void InterpreterMacroAssembler::increment_mask_and_jump(Address counter_addr, | |
1423 int increment, int mask, | |
1424 Register scratch, bool preloaded, | |
1425 Condition cond, Label* where) { | |
1426 if (!preloaded) { | |
1427 movl(scratch, counter_addr); | |
1428 } | |
1429 incrementl(scratch, increment); | |
1430 movl(counter_addr, scratch); | |
1431 andl(scratch, mask); | |
1432 jcc(cond, *where); | |
1433 } |