Mercurial > hg > truffle
annotate src/cpu/x86/vm/interp_masm_x86_64.cpp @ 14676:d3f14809b051
8036146: make CPP interpreter build again
Summary: fix build of CPP interpreter on x86 and sparc
Reviewed-by: kvn
author | roland |
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date | Wed, 05 Mar 2014 15:14:25 +0100 |
parents | ea79ab313e98 |
children | b51e29501f30 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2013, 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" |
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26 #include "interp_masm_x86.hpp" |
1972 | 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 | |
304 | 44 #ifdef CC_INTERP |
45 void InterpreterMacroAssembler::get_method(Register reg) { | |
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46 movptr(reg, Address(rbp, -((int)sizeof(BytecodeInterpreter) + 2 * wordSize))); |
304 | 47 movptr(reg, Address(reg, byte_offset_of(BytecodeInterpreter, _method))); |
48 } | |
49 #endif // CC_INTERP | |
50 | |
51 #ifndef CC_INTERP | |
52 | |
0 | 53 void InterpreterMacroAssembler::call_VM_leaf_base(address entry_point, |
54 int number_of_arguments) { | |
55 // interpreter specific | |
56 // | |
57 // Note: No need to save/restore bcp & locals (r13 & r14) pointer | |
58 // since these are callee saved registers and no blocking/ | |
59 // GC can happen in leaf calls. | |
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60 // Further Note: DO NOT save/restore bcp/locals. If a caller has |
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61 // already saved them so that it can use esi/edi as temporaries |
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62 // then a save/restore here will DESTROY the copy the caller |
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63 // saved! There used to be a save_bcp() that only happened in |
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64 // the ASSERT path (no restore_bcp). Which caused bizarre failures |
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65 // when jvm built with ASSERTs. |
0 | 66 #ifdef ASSERT |
67 { | |
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:" | |
72 " last_sp != NULL"); | |
73 bind(L); | |
74 } | |
75 #endif | |
76 // super call | |
77 MacroAssembler::call_VM_leaf_base(entry_point, number_of_arguments); | |
78 // interpreter specific | |
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79 // Used to ASSERT that r13/r14 were equal to frame's bcp/locals |
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80 // but since they may not have been saved (and we don't want to |
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81 // save thme here (see note above) the assert is invalid. |
0 | 82 } |
83 | |
84 void InterpreterMacroAssembler::call_VM_base(Register oop_result, | |
85 Register java_thread, | |
86 Register last_java_sp, | |
87 address entry_point, | |
88 int number_of_arguments, | |
89 bool check_exceptions) { | |
90 // interpreter specific | |
91 // | |
92 // Note: Could avoid restoring locals ptr (callee saved) - however doesn't | |
93 // really make a difference for these runtime calls, since they are | |
94 // slow anyway. Btw., bcp must be saved/restored since it may change | |
95 // due to GC. | |
96 // assert(java_thread == noreg , "not expecting a precomputed java thread"); | |
97 save_bcp(); | |
98 #ifdef ASSERT | |
99 { | |
100 Label L; | |
304 | 101 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
0 | 102 jcc(Assembler::equal, L); |
103 stop("InterpreterMacroAssembler::call_VM_leaf_base:" | |
104 " last_sp != NULL"); | |
105 bind(L); | |
106 } | |
107 #endif /* ASSERT */ | |
108 // super call | |
109 MacroAssembler::call_VM_base(oop_result, noreg, last_java_sp, | |
110 entry_point, number_of_arguments, | |
111 check_exceptions); | |
112 // interpreter specific | |
113 restore_bcp(); | |
114 restore_locals(); | |
115 } | |
116 | |
117 | |
118 void InterpreterMacroAssembler::check_and_handle_popframe(Register java_thread) { | |
119 if (JvmtiExport::can_pop_frame()) { | |
120 Label L; | |
121 // Initiate popframe handling only if it is not already being | |
122 // processed. If the flag has the popframe_processing bit set, it | |
123 // means that this code is called *during* popframe handling - we | |
124 // don't want to reenter. | |
125 // This method is only called just after the call into the vm in | |
126 // call_VM_base, so the arg registers are available. | |
127 movl(c_rarg0, Address(r15_thread, JavaThread::popframe_condition_offset())); | |
128 testl(c_rarg0, JavaThread::popframe_pending_bit); | |
129 jcc(Assembler::zero, L); | |
130 testl(c_rarg0, JavaThread::popframe_processing_bit); | |
131 jcc(Assembler::notZero, L); | |
132 // Call Interpreter::remove_activation_preserving_args_entry() to get the | |
133 // address of the same-named entrypoint in the generated interpreter code. | |
134 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry)); | |
135 jmp(rax); | |
136 bind(L); | |
137 } | |
138 } | |
139 | |
140 | |
141 void InterpreterMacroAssembler::load_earlyret_value(TosState state) { | |
304 | 142 movptr(rcx, Address(r15_thread, JavaThread::jvmti_thread_state_offset())); |
0 | 143 const Address tos_addr(rcx, JvmtiThreadState::earlyret_tos_offset()); |
144 const Address oop_addr(rcx, JvmtiThreadState::earlyret_oop_offset()); | |
145 const Address val_addr(rcx, JvmtiThreadState::earlyret_value_offset()); | |
146 switch (state) { | |
304 | 147 case atos: movptr(rax, oop_addr); |
148 movptr(oop_addr, (int32_t)NULL_WORD); | |
0 | 149 verify_oop(rax, state); break; |
304 | 150 case ltos: movptr(rax, val_addr); break; |
0 | 151 case btos: // fall through |
152 case ctos: // fall through | |
153 case stos: // fall through | |
154 case itos: movl(rax, val_addr); break; | |
155 case ftos: movflt(xmm0, val_addr); break; | |
156 case dtos: movdbl(xmm0, val_addr); break; | |
157 case vtos: /* nothing to do */ break; | |
158 default : ShouldNotReachHere(); | |
159 } | |
160 // Clean up tos value in the thread object | |
161 movl(tos_addr, (int) ilgl); | |
304 | 162 movl(val_addr, (int32_t) NULL_WORD); |
0 | 163 } |
164 | |
165 | |
166 void InterpreterMacroAssembler::check_and_handle_earlyret(Register java_thread) { | |
167 if (JvmtiExport::can_force_early_return()) { | |
168 Label L; | |
304 | 169 movptr(c_rarg0, Address(r15_thread, JavaThread::jvmti_thread_state_offset())); |
170 testptr(c_rarg0, c_rarg0); | |
0 | 171 jcc(Assembler::zero, L); // if (thread->jvmti_thread_state() == NULL) exit; |
172 | |
173 // Initiate earlyret handling only if it is not already being processed. | |
174 // If the flag has the earlyret_processing bit set, it means that this code | |
175 // is called *during* earlyret handling - we don't want to reenter. | |
176 movl(c_rarg0, Address(c_rarg0, JvmtiThreadState::earlyret_state_offset())); | |
177 cmpl(c_rarg0, JvmtiThreadState::earlyret_pending); | |
178 jcc(Assembler::notEqual, L); | |
179 | |
180 // Call Interpreter::remove_activation_early_entry() to get the address of the | |
181 // same-named entrypoint in the generated interpreter code. | |
304 | 182 movptr(c_rarg0, Address(r15_thread, JavaThread::jvmti_thread_state_offset())); |
0 | 183 movl(c_rarg0, Address(c_rarg0, JvmtiThreadState::earlyret_tos_offset())); |
184 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), c_rarg0); | |
185 jmp(rax); | |
186 bind(L); | |
187 } | |
188 } | |
189 | |
190 | |
191 void InterpreterMacroAssembler::get_unsigned_2_byte_index_at_bcp( | |
192 Register reg, | |
193 int bcp_offset) { | |
194 assert(bcp_offset >= 0, "bcp is still pointing to start of bytecode"); | |
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195 load_unsigned_short(reg, Address(r13, bcp_offset)); |
0 | 196 bswapl(reg); |
197 shrl(reg, 16); | |
198 } | |
199 | |
200 | |
1108 | 201 void InterpreterMacroAssembler::get_cache_index_at_bcp(Register index, |
202 int bcp_offset, | |
1565 | 203 size_t index_size) { |
1108 | 204 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); |
1565 | 205 if (index_size == sizeof(u2)) { |
1108 | 206 load_unsigned_short(index, Address(r13, bcp_offset)); |
1565 | 207 } else if (index_size == sizeof(u4)) { |
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208 assert(EnableInvokeDynamic, "giant index used only for JSR 292"); |
1108 | 209 movl(index, Address(r13, bcp_offset)); |
210 // Check if the secondary index definition is still ~x, otherwise | |
211 // we have to change the following assembler code to calculate the | |
212 // plain index. | |
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213 assert(ConstantPool::decode_invokedynamic_index(~123) == 123, "else change next line"); |
1108 | 214 notl(index); // convert to plain index |
1565 | 215 } else if (index_size == sizeof(u1)) { |
216 load_unsigned_byte(index, Address(r13, bcp_offset)); | |
217 } else { | |
218 ShouldNotReachHere(); | |
1108 | 219 } |
220 } | |
221 | |
222 | |
0 | 223 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, |
224 Register index, | |
1108 | 225 int bcp_offset, |
1565 | 226 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"); |
231 // convert from field index to ConstantPoolCacheEntry index | |
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232 assert(exact_log2(in_words(ConstantPoolCacheEntry::size())) == 2, "else change next line"); |
0 | 233 shll(index, 2); |
234 } | |
235 | |
236 | |
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237 void InterpreterMacroAssembler::get_cache_and_index_and_bytecode_at_bcp(Register cache, |
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238 Register index, |
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239 Register bytecode, |
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240 int byte_no, |
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241 int bcp_offset, |
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242 size_t index_size) { |
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243 get_cache_and_index_at_bcp(cache, index, bcp_offset, index_size); |
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244 // We use a 32-bit load here since the layout of 64-bit words on |
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245 // little-endian machines allow us that. |
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246 movl(bytecode, Address(cache, index, Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::indices_offset())); |
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247 const int shift_count = (1 + byte_no) * BitsPerByte; |
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248 assert((byte_no == TemplateTable::f1_byte && shift_count == ConstantPoolCacheEntry::bytecode_1_shift) || |
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249 (byte_no == TemplateTable::f2_byte && shift_count == ConstantPoolCacheEntry::bytecode_2_shift), |
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250 "correct shift count"); |
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251 shrl(bytecode, shift_count); |
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252 assert(ConstantPoolCacheEntry::bytecode_1_mask == ConstantPoolCacheEntry::bytecode_2_mask, "common mask"); |
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253 andl(bytecode, ConstantPoolCacheEntry::bytecode_1_mask); |
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254 } |
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255 |
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256 |
0 | 257 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, |
258 Register tmp, | |
1108 | 259 int bcp_offset, |
1565 | 260 size_t index_size) { |
0 | 261 assert(cache != tmp, "must use different register"); |
1565 | 262 get_cache_index_at_bcp(tmp, bcp_offset, index_size); |
0 | 263 assert(sizeof(ConstantPoolCacheEntry) == 4 * wordSize, "adjust code below"); |
264 // convert from field index to ConstantPoolCacheEntry index | |
265 // and from word offset to byte offset | |
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266 assert(exact_log2(in_bytes(ConstantPoolCacheEntry::size_in_bytes())) == 2 + LogBytesPerWord, "else change next line"); |
0 | 267 shll(tmp, 2 + LogBytesPerWord); |
304 | 268 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
0 | 269 // skip past the header |
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270 addptr(cache, in_bytes(ConstantPoolCache::base_offset())); |
304 | 271 addptr(cache, tmp); // construct pointer to cache entry |
0 | 272 } |
273 | |
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274 // Load object from cpool->resolved_references(index) |
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275 void InterpreterMacroAssembler::load_resolved_reference_at_index( |
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276 Register result, Register index) { |
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277 assert_different_registers(result, index); |
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278 // convert from field index to resolved_references() index and from |
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279 // word index to byte offset. Since this is a java object, it can be compressed |
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280 Register tmp = index; // reuse |
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281 shll(tmp, LogBytesPerHeapOop); |
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282 |
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283 get_constant_pool(result); |
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284 // load pointer for resolved_references[] objArray |
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285 movptr(result, Address(result, ConstantPool::resolved_references_offset_in_bytes())); |
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286 // JNIHandles::resolve(obj); |
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287 movptr(result, Address(result, 0)); |
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288 // Add in the index |
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289 addptr(result, tmp); |
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290 load_heap_oop(result, Address(result, arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
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291 } |
0 | 292 |
293 // Generate a subtype check: branch to ok_is_subtype if sub_klass is a | |
294 // subtype of super_klass. | |
295 // | |
296 // Args: | |
297 // rax: superklass | |
298 // Rsub_klass: subklass | |
299 // | |
300 // Kills: | |
301 // rcx, rdi | |
302 void InterpreterMacroAssembler::gen_subtype_check(Register Rsub_klass, | |
303 Label& ok_is_subtype) { | |
304 assert(Rsub_klass != rax, "rax holds superklass"); | |
305 assert(Rsub_klass != r14, "r14 holds locals"); | |
306 assert(Rsub_klass != r13, "r13 holds bcp"); | |
307 assert(Rsub_klass != rcx, "rcx holds 2ndary super array length"); | |
308 assert(Rsub_klass != rdi, "rdi holds 2ndary super array scan ptr"); | |
309 | |
310 // Profile the not-null value's klass. | |
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311 profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, reloads rdi |
0 | 312 |
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313 // Do the check. |
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314 check_klass_subtype(Rsub_klass, rax, rcx, ok_is_subtype); // blows rcx |
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315 |
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316 // Profile the failure of the check. |
0 | 317 profile_typecheck_failed(rcx); // blows rcx |
318 } | |
319 | |
320 | |
304 | 321 |
0 | 322 // Java Expression Stack |
323 | |
324 void InterpreterMacroAssembler::pop_ptr(Register r) { | |
304 | 325 pop(r); |
0 | 326 } |
327 | |
328 void InterpreterMacroAssembler::pop_i(Register r) { | |
304 | 329 // XXX can't use pop currently, upper half non clean |
0 | 330 movl(r, Address(rsp, 0)); |
304 | 331 addptr(rsp, wordSize); |
0 | 332 } |
333 | |
334 void InterpreterMacroAssembler::pop_l(Register r) { | |
335 movq(r, Address(rsp, 0)); | |
1506 | 336 addptr(rsp, 2 * Interpreter::stackElementSize); |
0 | 337 } |
338 | |
339 void InterpreterMacroAssembler::pop_f(XMMRegister r) { | |
340 movflt(r, Address(rsp, 0)); | |
304 | 341 addptr(rsp, wordSize); |
0 | 342 } |
343 | |
344 void InterpreterMacroAssembler::pop_d(XMMRegister r) { | |
345 movdbl(r, Address(rsp, 0)); | |
1506 | 346 addptr(rsp, 2 * Interpreter::stackElementSize); |
0 | 347 } |
348 | |
349 void InterpreterMacroAssembler::push_ptr(Register r) { | |
304 | 350 push(r); |
0 | 351 } |
352 | |
353 void InterpreterMacroAssembler::push_i(Register r) { | |
304 | 354 push(r); |
0 | 355 } |
356 | |
357 void InterpreterMacroAssembler::push_l(Register r) { | |
1506 | 358 subptr(rsp, 2 * wordSize); |
0 | 359 movq(Address(rsp, 0), r); |
360 } | |
361 | |
362 void InterpreterMacroAssembler::push_f(XMMRegister r) { | |
304 | 363 subptr(rsp, wordSize); |
0 | 364 movflt(Address(rsp, 0), r); |
365 } | |
366 | |
367 void InterpreterMacroAssembler::push_d(XMMRegister r) { | |
1506 | 368 subptr(rsp, 2 * wordSize); |
0 | 369 movdbl(Address(rsp, 0), r); |
370 } | |
371 | |
372 void InterpreterMacroAssembler::pop(TosState state) { | |
373 switch (state) { | |
374 case atos: pop_ptr(); break; | |
375 case btos: | |
376 case ctos: | |
377 case stos: | |
378 case itos: pop_i(); break; | |
379 case ltos: pop_l(); break; | |
380 case ftos: pop_f(); break; | |
381 case dtos: pop_d(); break; | |
382 case vtos: /* nothing to do */ break; | |
383 default: ShouldNotReachHere(); | |
384 } | |
385 verify_oop(rax, state); | |
386 } | |
387 | |
388 void InterpreterMacroAssembler::push(TosState state) { | |
389 verify_oop(rax, state); | |
390 switch (state) { | |
391 case atos: push_ptr(); break; | |
392 case btos: | |
393 case ctos: | |
394 case stos: | |
395 case itos: push_i(); break; | |
396 case ltos: push_l(); break; | |
397 case ftos: push_f(); break; | |
398 case dtos: push_d(); break; | |
399 case vtos: /* nothing to do */ break; | |
400 default : ShouldNotReachHere(); | |
401 } | |
402 } | |
403 | |
404 | |
1506 | 405 // Helpers for swap and dup |
406 void InterpreterMacroAssembler::load_ptr(int n, Register val) { | |
304 | 407 movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n))); |
0 | 408 } |
409 | |
1506 | 410 void InterpreterMacroAssembler::store_ptr(int n, Register val) { |
411 movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val); | |
0 | 412 } |
413 | |
414 | |
710 | 415 void InterpreterMacroAssembler::prepare_to_jump_from_interpreted() { |
0 | 416 // set sender sp |
304 | 417 lea(r13, Address(rsp, wordSize)); |
0 | 418 // record last_sp |
304 | 419 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), r13); |
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 // interp_only is an int, on little endian it is sufficient to test the byte only | |
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434 // Is a cmpl faster? |
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435 cmpb(Address(r15_thread, JavaThread::interp_only_mode_offset()), 0); |
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436 jccb(Assembler::zero, run_compiled_code); |
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437 jmp(Address(method, Method::interpreter_entry_offset())); |
0 | 438 bind(run_compiled_code); |
439 } | |
440 | |
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441 jmp(Address(method, Method::from_interpreted_offset())); |
0 | 442 |
443 } | |
444 | |
445 | |
446 // The following two routines provide a hook so that an implementation | |
447 // can schedule the dispatch in two parts. amd64 does not do this. | |
448 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) { | |
449 // Nothing amd64 specific to be done here | |
450 } | |
451 | |
452 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) { | |
453 dispatch_next(state, step); | |
454 } | |
455 | |
456 void InterpreterMacroAssembler::dispatch_base(TosState state, | |
457 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); | |
464 int32_t min_frame_size = | |
0 | 465 (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * |
466 wordSize; | |
304 | 467 cmpptr(rcx, (int32_t)min_frame_size); |
0 | 468 jcc(Assembler::greaterEqual, L); |
469 stop("broken stack frame"); | |
470 bind(L); | |
471 } | |
472 if (verifyoop) { | |
473 verify_oop(rax, state); | |
474 } | |
475 lea(rscratch1, ExternalAddress((address)table)); | |
476 jmp(Address(rscratch1, rbx, Address::times_8)); | |
477 } | |
478 | |
479 void InterpreterMacroAssembler::dispatch_only(TosState state) { | |
480 dispatch_base(state, Interpreter::dispatch_table(state)); | |
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 r13 to prevent AGI) | |
494 load_unsigned_byte(rbx, Address(r13, step)); | |
495 // advance r13 | |
304 | 496 increment(r13, step); |
0 | 497 dispatch_base(state, Interpreter::dispatch_table(state)); |
498 } | |
499 | |
500 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
501 // load current bytecode | |
502 load_unsigned_byte(rbx, Address(r13, 0)); | |
503 dispatch_base(state, table); | |
504 } | |
505 | |
506 // remove activation | |
507 // | |
508 // Unlock the receiver if this is a synchronized method. | |
509 // Unlock any Java monitors from syncronized blocks. | |
510 // Remove the activation from the stack. | |
511 // | |
512 // If there are locked Java monitors | |
513 // If throw_monitor_exception | |
514 // throws IllegalMonitorStateException | |
515 // Else if install_monitor_exception | |
516 // installs IllegalMonitorStateException | |
517 // Else | |
518 // no error processing | |
519 void InterpreterMacroAssembler::remove_activation( | |
520 TosState state, | |
521 Register ret_addr, | |
522 bool throw_monitor_exception, | |
523 bool install_monitor_exception, | |
524 bool notify_jvmdi) { | |
525 // Note: Registers rdx xmm0 may be in use for the | |
526 // result check if synchronized method | |
527 Label unlocked, unlock, no_unlock; | |
528 | |
529 // get the value of _do_not_unlock_if_synchronized into rdx | |
530 const Address do_not_unlock_if_synchronized(r15_thread, | |
531 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
532 movbool(rdx, do_not_unlock_if_synchronized); | |
533 movbool(do_not_unlock_if_synchronized, false); // reset the flag | |
534 | |
535 // get method access flags | |
304 | 536 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); |
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537 movl(rcx, Address(rbx, Method::access_flags_offset())); |
0 | 538 testl(rcx, JVM_ACC_SYNCHRONIZED); |
539 jcc(Assembler::zero, unlocked); | |
540 | |
541 // Don't unlock anything if the _do_not_unlock_if_synchronized flag | |
542 // is set. | |
543 testbool(rdx); | |
544 jcc(Assembler::notZero, no_unlock); | |
545 | |
546 // unlock monitor | |
547 push(state); // save result | |
548 | |
549 // BasicObjectLock will be first in list, since this is a | |
550 // synchronized method. However, need to check that the object has | |
551 // not been unlocked by an explicit monitorexit bytecode. | |
552 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * | |
553 wordSize - (int) sizeof(BasicObjectLock)); | |
554 // We use c_rarg1 so that if we go slow path it will be the correct | |
555 // register for unlock_object to pass to VM directly | |
304 | 556 lea(c_rarg1, monitor); // address of first monitor |
0 | 557 |
304 | 558 movptr(rax, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); |
559 testptr(rax, rax); | |
0 | 560 jcc(Assembler::notZero, unlock); |
561 | |
562 pop(state); | |
563 if (throw_monitor_exception) { | |
564 // Entry already unlocked, need to throw exception | |
565 call_VM(noreg, CAST_FROM_FN_PTR(address, | |
566 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
567 should_not_reach_here(); | |
568 } else { | |
569 // Monitor already unlocked during a stack unroll. If requested, | |
570 // install an illegal_monitor_state_exception. Continue with | |
571 // stack unrolling. | |
572 if (install_monitor_exception) { | |
573 call_VM(noreg, CAST_FROM_FN_PTR(address, | |
574 InterpreterRuntime::new_illegal_monitor_state_exception)); | |
575 } | |
576 jmp(unlocked); | |
577 } | |
578 | |
579 bind(unlock); | |
580 unlock_object(c_rarg1); | |
581 pop(state); | |
582 | |
583 // Check that for block-structured locking (i.e., that all locked | |
584 // objects has been unlocked) | |
585 bind(unlocked); | |
586 | |
587 // rax: Might contain return value | |
588 | |
589 // Check that all monitors are unlocked | |
590 { | |
591 Label loop, exception, entry, restart; | |
592 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
593 const Address monitor_block_top( | |
594 rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
595 const Address monitor_block_bot( | |
596 rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
597 | |
598 bind(restart); | |
599 // We use c_rarg1 so that if we go slow path it will be the correct | |
600 // register for unlock_object to pass to VM directly | |
304 | 601 movptr(c_rarg1, monitor_block_top); // points to current entry, starting |
0 | 602 // with top-most entry |
304 | 603 lea(rbx, monitor_block_bot); // points to word before bottom of |
0 | 604 // monitor block |
605 jmp(entry); | |
606 | |
607 // Entry already locked, need to throw exception | |
608 bind(exception); | |
609 | |
610 if (throw_monitor_exception) { | |
611 // Throw exception | |
612 MacroAssembler::call_VM(noreg, | |
613 CAST_FROM_FN_PTR(address, InterpreterRuntime:: | |
614 throw_illegal_monitor_state_exception)); | |
615 should_not_reach_here(); | |
616 } else { | |
617 // Stack unrolling. Unlock object and install illegal_monitor_exception. | |
618 // Unlock does not block, so don't have to worry about the frame. | |
619 // We don't have to preserve c_rarg1 since we are going to throw an exception. | |
620 | |
621 push(state); | |
622 unlock_object(c_rarg1); | |
623 pop(state); | |
624 | |
625 if (install_monitor_exception) { | |
626 call_VM(noreg, CAST_FROM_FN_PTR(address, | |
627 InterpreterRuntime:: | |
628 new_illegal_monitor_state_exception)); | |
629 } | |
630 | |
631 jmp(restart); | |
632 } | |
633 | |
634 bind(loop); | |
635 // check if current entry is used | |
304 | 636 cmpptr(Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes()), (int32_t) NULL); |
0 | 637 jcc(Assembler::notEqual, exception); |
638 | |
304 | 639 addptr(c_rarg1, entry_size); // otherwise advance to next entry |
0 | 640 bind(entry); |
304 | 641 cmpptr(c_rarg1, rbx); // check if bottom reached |
0 | 642 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
643 } | |
644 | |
645 bind(no_unlock); | |
646 | |
647 // jvmti support | |
648 if (notify_jvmdi) { | |
649 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA | |
650 } else { | |
651 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA | |
652 } | |
653 | |
654 // remove activation | |
655 // get sender sp | |
304 | 656 movptr(rbx, |
657 Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); | |
0 | 658 leave(); // remove frame anchor |
304 | 659 pop(ret_addr); // get return address |
660 mov(rsp, rbx); // set sp to sender sp | |
0 | 661 } |
662 | |
304 | 663 #endif // C_INTERP |
664 | |
14676 | 665 void InterpreterMacroAssembler::get_method_counters(Register method, |
666 Register mcs, Label& skip) { | |
667 Label has_counters; | |
668 movptr(mcs, Address(method, Method::method_counters_offset())); | |
669 testptr(mcs, mcs); | |
670 jcc(Assembler::notZero, has_counters); | |
671 call_VM(noreg, CAST_FROM_FN_PTR(address, | |
672 InterpreterRuntime::build_method_counters), method); | |
673 movptr(mcs, Address(method,Method::method_counters_offset())); | |
674 testptr(mcs, mcs); | |
675 jcc(Assembler::zero, skip); // No MethodCounters allocated, OutOfMemory | |
676 bind(has_counters); | |
677 } | |
678 | |
679 | |
0 | 680 // Lock object |
681 // | |
682 // Args: | |
683 // c_rarg1: BasicObjectLock to be used for locking | |
684 // | |
685 // Kills: | |
686 // rax | |
687 // c_rarg0, c_rarg1, c_rarg2, c_rarg3, .. (param regs) | |
688 // rscratch1, rscratch2 (scratch regs) | |
689 void InterpreterMacroAssembler::lock_object(Register lock_reg) { | |
690 assert(lock_reg == c_rarg1, "The argument is only for looks. It must be c_rarg1"); | |
691 | |
692 if (UseHeavyMonitors) { | |
693 call_VM(noreg, | |
694 CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), | |
695 lock_reg); | |
696 } else { | |
697 Label done; | |
698 | |
699 const Register swap_reg = rax; // Must use rax for cmpxchg instruction | |
700 const Register obj_reg = c_rarg3; // Will contain the oop | |
701 | |
702 const int obj_offset = BasicObjectLock::obj_offset_in_bytes(); | |
703 const int lock_offset = BasicObjectLock::lock_offset_in_bytes (); | |
704 const int mark_offset = lock_offset + | |
705 BasicLock::displaced_header_offset_in_bytes(); | |
706 | |
707 Label slow_case; | |
708 | |
709 // Load object pointer into obj_reg %c_rarg3 | |
304 | 710 movptr(obj_reg, Address(lock_reg, obj_offset)); |
0 | 711 |
712 if (UseBiasedLocking) { | |
713 biased_locking_enter(lock_reg, obj_reg, swap_reg, rscratch1, false, done, &slow_case); | |
714 } | |
715 | |
716 // Load immediate 1 into swap_reg %rax | |
717 movl(swap_reg, 1); | |
718 | |
719 // Load (object->mark() | 1) into swap_reg %rax | |
304 | 720 orptr(swap_reg, Address(obj_reg, 0)); |
0 | 721 |
722 // Save (object->mark() | 1) into BasicLock's displaced header | |
304 | 723 movptr(Address(lock_reg, mark_offset), swap_reg); |
0 | 724 |
725 assert(lock_offset == 0, | |
726 "displached header must be first word in BasicObjectLock"); | |
727 | |
728 if (os::is_MP()) lock(); | |
304 | 729 cmpxchgptr(lock_reg, Address(obj_reg, 0)); |
0 | 730 if (PrintBiasedLockingStatistics) { |
731 cond_inc32(Assembler::zero, | |
732 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
733 } | |
734 jcc(Assembler::zero, done); | |
735 | |
736 // Test if the oopMark is an obvious stack pointer, i.e., | |
737 // 1) (mark & 7) == 0, and | |
738 // 2) rsp <= mark < mark + os::pagesize() | |
739 // | |
740 // These 3 tests can be done by evaluating the following | |
741 // expression: ((mark - rsp) & (7 - os::vm_page_size())), | |
742 // assuming both stack pointer and pagesize have their | |
743 // least significant 3 bits clear. | |
744 // NOTE: the oopMark is in swap_reg %rax as the result of cmpxchg | |
304 | 745 subptr(swap_reg, rsp); |
746 andptr(swap_reg, 7 - os::vm_page_size()); | |
0 | 747 |
748 // Save the test result, for recursive case, the result is zero | |
304 | 749 movptr(Address(lock_reg, mark_offset), swap_reg); |
0 | 750 |
751 if (PrintBiasedLockingStatistics) { | |
752 cond_inc32(Assembler::zero, | |
753 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
754 } | |
755 jcc(Assembler::zero, done); | |
756 | |
757 bind(slow_case); | |
758 | |
759 // Call the runtime routine for slow case | |
760 call_VM(noreg, | |
761 CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), | |
762 lock_reg); | |
763 | |
764 bind(done); | |
765 } | |
766 } | |
767 | |
768 | |
769 // Unlocks an object. Used in monitorexit bytecode and | |
770 // remove_activation. Throws an IllegalMonitorException if object is | |
771 // not locked by current thread. | |
772 // | |
773 // Args: | |
774 // c_rarg1: BasicObjectLock for lock | |
775 // | |
776 // Kills: | |
777 // rax | |
778 // c_rarg0, c_rarg1, c_rarg2, c_rarg3, ... (param regs) | |
779 // rscratch1, rscratch2 (scratch regs) | |
780 void InterpreterMacroAssembler::unlock_object(Register lock_reg) { | |
781 assert(lock_reg == c_rarg1, "The argument is only for looks. It must be rarg1"); | |
782 | |
783 if (UseHeavyMonitors) { | |
784 call_VM(noreg, | |
785 CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), | |
786 lock_reg); | |
787 } else { | |
788 Label done; | |
789 | |
790 const Register swap_reg = rax; // Must use rax for cmpxchg instruction | |
791 const Register header_reg = c_rarg2; // Will contain the old oopMark | |
792 const Register obj_reg = c_rarg3; // Will contain the oop | |
793 | |
794 save_bcp(); // Save in case of exception | |
795 | |
796 // Convert from BasicObjectLock structure to object and BasicLock | |
797 // structure Store the BasicLock address into %rax | |
304 | 798 lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes())); |
0 | 799 |
800 // Load oop into obj_reg(%c_rarg3) | |
304 | 801 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes())); |
0 | 802 |
803 // Free entry | |
304 | 804 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); |
0 | 805 |
806 if (UseBiasedLocking) { | |
807 biased_locking_exit(obj_reg, header_reg, done); | |
808 } | |
809 | |
810 // Load the old header from BasicLock structure | |
304 | 811 movptr(header_reg, Address(swap_reg, |
812 BasicLock::displaced_header_offset_in_bytes())); | |
0 | 813 |
814 // Test for recursion | |
304 | 815 testptr(header_reg, header_reg); |
0 | 816 |
817 // zero for recursive case | |
818 jcc(Assembler::zero, done); | |
819 | |
820 // Atomic swap back the old header | |
821 if (os::is_MP()) lock(); | |
304 | 822 cmpxchgptr(header_reg, Address(obj_reg, 0)); |
0 | 823 |
824 // zero for recursive case | |
825 jcc(Assembler::zero, done); | |
826 | |
827 // Call the runtime routine for slow case. | |
304 | 828 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), |
0 | 829 obj_reg); // restore obj |
830 call_VM(noreg, | |
831 CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), | |
832 lock_reg); | |
833 | |
834 bind(done); | |
835 | |
836 restore_bcp(); | |
837 } | |
838 } | |
839 | |
304 | 840 #ifndef CC_INTERP |
0 | 841 |
842 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, | |
843 Label& zero_continue) { | |
844 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 845 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize)); |
846 testptr(mdp, mdp); | |
0 | 847 jcc(Assembler::zero, zero_continue); |
848 } | |
849 | |
850 | |
851 // Set the method data pointer for the current bcp. | |
852 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
853 assert(ProfileInterpreter, "must be profiling interpreter"); | |
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854 Label set_mdp; |
304 | 855 push(rax); |
856 push(rbx); | |
0 | 857 |
858 get_method(rbx); | |
859 // Test MDO to avoid the call if it is NULL. | |
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860 movptr(rax, Address(rbx, in_bytes(Method::method_data_offset()))); |
304 | 861 testptr(rax, rax); |
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862 jcc(Assembler::zero, set_mdp); |
0 | 863 // rbx: method |
864 // r13: bcp | |
865 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, r13); | |
866 // rax: mdi | |
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867 // mdo is guaranteed to be non-zero here, we checked for it before the call. |
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868 movptr(rbx, Address(rbx, in_bytes(Method::method_data_offset()))); |
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869 addptr(rbx, in_bytes(MethodData::data_offset())); |
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870 addptr(rax, rbx); |
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871 bind(set_mdp); |
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872 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax); |
304 | 873 pop(rbx); |
874 pop(rax); | |
0 | 875 } |
876 | |
877 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
878 assert(ProfileInterpreter, "must be profiling interpreter"); | |
879 #ifdef ASSERT | |
880 Label verify_continue; | |
304 | 881 push(rax); |
882 push(rbx); | |
883 push(c_rarg3); | |
884 push(c_rarg2); | |
0 | 885 test_method_data_pointer(c_rarg3, verify_continue); // If mdp is zero, continue |
886 get_method(rbx); | |
887 | |
888 // If the mdp is valid, it will point to a DataLayout header which is | |
889 // consistent with the bcp. The converse is highly probable also. | |
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890 load_unsigned_short(c_rarg2, |
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891 Address(c_rarg3, in_bytes(DataLayout::bci_offset()))); |
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892 addptr(c_rarg2, Address(rbx, Method::const_offset())); |
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893 lea(c_rarg2, Address(c_rarg2, ConstMethod::codes_offset())); |
304 | 894 cmpptr(c_rarg2, r13); |
0 | 895 jcc(Assembler::equal, verify_continue); |
896 // rbx: method | |
897 // r13: bcp | |
898 // c_rarg3: mdp | |
899 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), | |
900 rbx, r13, c_rarg3); | |
901 bind(verify_continue); | |
304 | 902 pop(c_rarg2); |
903 pop(c_rarg3); | |
904 pop(rbx); | |
905 pop(rax); | |
0 | 906 #endif // ASSERT |
907 } | |
908 | |
909 | |
910 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, | |
911 int constant, | |
912 Register value) { | |
913 assert(ProfileInterpreter, "must be profiling interpreter"); | |
914 Address data(mdp_in, constant); | |
304 | 915 movptr(data, value); |
0 | 916 } |
917 | |
918 | |
919 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
920 int constant, | |
921 bool decrement) { | |
922 // Counter address | |
923 Address data(mdp_in, constant); | |
924 | |
925 increment_mdp_data_at(data, decrement); | |
926 } | |
927 | |
928 void InterpreterMacroAssembler::increment_mdp_data_at(Address data, | |
929 bool decrement) { | |
930 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 931 // %%% this does 64bit counters at best it is wasting space |
932 // at worst it is a rare bug when counters overflow | |
0 | 933 |
934 if (decrement) { | |
935 // Decrement the register. Set condition codes. | |
304 | 936 addptr(data, (int32_t) -DataLayout::counter_increment); |
0 | 937 // If the decrement causes the counter to overflow, stay negative |
938 Label L; | |
939 jcc(Assembler::negative, L); | |
304 | 940 addptr(data, (int32_t) DataLayout::counter_increment); |
0 | 941 bind(L); |
942 } else { | |
943 assert(DataLayout::counter_increment == 1, | |
944 "flow-free idiom only works with 1"); | |
945 // Increment the register. Set carry flag. | |
304 | 946 addptr(data, DataLayout::counter_increment); |
0 | 947 // If the increment causes the counter to overflow, pull back by 1. |
304 | 948 sbbptr(data, (int32_t)0); |
0 | 949 } |
950 } | |
951 | |
952 | |
953 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
954 Register reg, | |
955 int constant, | |
956 bool decrement) { | |
957 Address data(mdp_in, reg, Address::times_1, constant); | |
958 | |
959 increment_mdp_data_at(data, decrement); | |
960 } | |
961 | |
962 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, | |
963 int flag_byte_constant) { | |
964 assert(ProfileInterpreter, "must be profiling interpreter"); | |
965 int header_offset = in_bytes(DataLayout::header_offset()); | |
966 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant); | |
967 // Set the flag | |
968 orl(Address(mdp_in, header_offset), header_bits); | |
969 } | |
970 | |
971 | |
972 | |
973 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in, | |
974 int offset, | |
975 Register value, | |
976 Register test_value_out, | |
977 Label& not_equal_continue) { | |
978 assert(ProfileInterpreter, "must be profiling interpreter"); | |
979 if (test_value_out == noreg) { | |
304 | 980 cmpptr(value, Address(mdp_in, offset)); |
0 | 981 } else { |
982 // Put the test value into a register, so caller can use it: | |
304 | 983 movptr(test_value_out, Address(mdp_in, offset)); |
984 cmpptr(test_value_out, value); | |
0 | 985 } |
986 jcc(Assembler::notEqual, not_equal_continue); | |
987 } | |
988 | |
989 | |
990 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, | |
991 int offset_of_disp) { | |
992 assert(ProfileInterpreter, "must be profiling interpreter"); | |
993 Address disp_address(mdp_in, offset_of_disp); | |
304 | 994 addptr(mdp_in, disp_address); |
995 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 996 } |
997 | |
998 | |
999 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, | |
1000 Register reg, | |
1001 int offset_of_disp) { | |
1002 assert(ProfileInterpreter, "must be profiling interpreter"); | |
1003 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp); | |
304 | 1004 addptr(mdp_in, disp_address); |
1005 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 1006 } |
1007 | |
1008 | |
1009 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, | |
1010 int constant) { | |
1011 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 1012 addptr(mdp_in, constant); |
1013 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
0 | 1014 } |
1015 | |
1016 | |
1017 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) { | |
1018 assert(ProfileInterpreter, "must be profiling interpreter"); | |
304 | 1019 push(return_bci); // save/restore across call_VM |
0 | 1020 call_VM(noreg, |
1021 CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), | |
1022 return_bci); | |
304 | 1023 pop(return_bci); |
0 | 1024 } |
1025 | |
1026 | |
1027 void InterpreterMacroAssembler::profile_taken_branch(Register mdp, | |
1028 Register bumped_count) { | |
1029 if (ProfileInterpreter) { | |
1030 Label profile_continue; | |
1031 | |
1032 // If no method data exists, go to profile_continue. | |
1033 // Otherwise, assign to mdp | |
1034 test_method_data_pointer(mdp, profile_continue); | |
1035 | |
1036 // We are taking a branch. Increment the taken count. | |
1037 // We inline increment_mdp_data_at to return bumped_count in a register | |
1038 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset())); | |
1039 Address data(mdp, in_bytes(JumpData::taken_offset())); | |
304 | 1040 movptr(bumped_count, data); |
0 | 1041 assert(DataLayout::counter_increment == 1, |
1042 "flow-free idiom only works with 1"); | |
304 | 1043 addptr(bumped_count, DataLayout::counter_increment); |
1044 sbbptr(bumped_count, 0); | |
1045 movptr(data, bumped_count); // Store back out | |
0 | 1046 |
1047 // The method data pointer needs to be updated to reflect the new target. | |
1048 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset())); | |
1049 bind(profile_continue); | |
1050 } | |
1051 } | |
1052 | |
1053 | |
1054 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) { | |
1055 if (ProfileInterpreter) { | |
1056 Label profile_continue; | |
1057 | |
1058 // If no method data exists, go to profile_continue. | |
1059 test_method_data_pointer(mdp, profile_continue); | |
1060 | |
1061 // We are taking a branch. Increment the not taken count. | |
1062 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset())); | |
1063 | |
1064 // The method data pointer needs to be updated to correspond to | |
1065 // the next bytecode | |
1066 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size())); | |
1067 bind(profile_continue); | |
1068 } | |
1069 } | |
1070 | |
1071 void InterpreterMacroAssembler::profile_call(Register mdp) { | |
1072 if (ProfileInterpreter) { | |
1073 Label profile_continue; | |
1074 | |
1075 // If no method data exists, go to profile_continue. | |
1076 test_method_data_pointer(mdp, profile_continue); | |
1077 | |
1078 // We are making a call. Increment the count. | |
1079 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1080 | |
1081 // The method data pointer needs to be updated to reflect the new target. | |
1082 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size())); | |
1083 bind(profile_continue); | |
1084 } | |
1085 } | |
1086 | |
1087 | |
1088 void InterpreterMacroAssembler::profile_final_call(Register mdp) { | |
1089 if (ProfileInterpreter) { | |
1090 Label profile_continue; | |
1091 | |
1092 // If no method data exists, go to profile_continue. | |
1093 test_method_data_pointer(mdp, profile_continue); | |
1094 | |
1095 // We are making a call. Increment the count. | |
1096 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1097 | |
1098 // The method data pointer needs to be updated to reflect the new target. | |
1099 update_mdp_by_constant(mdp, | |
1100 in_bytes(VirtualCallData:: | |
1101 virtual_call_data_size())); | |
1102 bind(profile_continue); | |
1103 } | |
1104 } | |
1105 | |
1106 | |
1107 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, | |
1108 Register mdp, | |
1108 | 1109 Register reg2, |
1110 bool receiver_can_be_null) { | |
0 | 1111 if (ProfileInterpreter) { |
1112 Label profile_continue; | |
1113 | |
1114 // If no method data exists, go to profile_continue. | |
1115 test_method_data_pointer(mdp, profile_continue); | |
1116 | |
1108 | 1117 Label skip_receiver_profile; |
1118 if (receiver_can_be_null) { | |
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1119 Label not_null; |
1108 | 1120 testptr(receiver, receiver); |
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1121 jccb(Assembler::notZero, not_null); |
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1122 // We are making a call. Increment the count for null receiver. |
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1123 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1124 jmp(skip_receiver_profile); |
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1125 bind(not_null); |
1108 | 1126 } |
1127 | |
0 | 1128 // Record the receiver type. |
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1129 record_klass_in_profile(receiver, mdp, reg2, true); |
1108 | 1130 bind(skip_receiver_profile); |
0 | 1131 |
1132 // The method data pointer needs to be updated to reflect the new target. | |
1133 update_mdp_by_constant(mdp, | |
1134 in_bytes(VirtualCallData:: | |
1135 virtual_call_data_size())); | |
1136 bind(profile_continue); | |
1137 } | |
1138 } | |
1139 | |
1140 // This routine creates a state machine for updating the multi-row | |
1141 // type profile at a virtual call site (or other type-sensitive bytecode). | |
1142 // The machine visits each row (of receiver/count) until the receiver type | |
1143 // is found, or until it runs out of rows. At the same time, it remembers | |
1144 // the location of the first empty row. (An empty row records null for its | |
1145 // receiver, and can be allocated for a newly-observed receiver type.) | |
1146 // Because there are two degrees of freedom in the state, a simple linear | |
1147 // search will not work; it must be a decision tree. Hence this helper | |
1148 // function is recursive, to generate the required tree structured code. | |
1149 // It's the interpreter, so we are trading off code space for speed. | |
1150 // See below for example code. | |
1151 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
1152 Register receiver, Register mdp, | |
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1153 Register reg2, int start_row, |
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1154 Label& done, bool is_virtual_call) { |
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1155 if (TypeProfileWidth == 0) { |
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1156 if (is_virtual_call) { |
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1157 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1158 } |
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1159 return; |
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1160 } |
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1161 |
0 | 1162 int last_row = VirtualCallData::row_limit() - 1; |
1163 assert(start_row <= last_row, "must be work left to do"); | |
1164 // Test this row for both the receiver and for null. | |
1165 // Take any of three different outcomes: | |
1166 // 1. found receiver => increment count and goto done | |
1167 // 2. found null => keep looking for case 1, maybe allocate this cell | |
1168 // 3. found something else => keep looking for cases 1 and 2 | |
1169 // Case 3 is handled by a recursive call. | |
1170 for (int row = start_row; row <= last_row; row++) { | |
1171 Label next_test; | |
1172 bool test_for_null_also = (row == start_row); | |
1173 | |
1174 // See if the receiver is receiver[n]. | |
1175 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
1176 test_mdp_data_at(mdp, recvr_offset, receiver, | |
1177 (test_for_null_also ? reg2 : noreg), | |
1178 next_test); | |
1179 // (Reg2 now contains the receiver from the CallData.) | |
1180 | |
1181 // The receiver is receiver[n]. Increment count[n]. | |
1182 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
1183 increment_mdp_data_at(mdp, count_offset); | |
1184 jmp(done); | |
1185 bind(next_test); | |
1186 | |
1187 if (test_for_null_also) { | |
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1188 Label found_null; |
0 | 1189 // Failed the equality check on receiver[n]... Test for null. |
304 | 1190 testptr(reg2, reg2); |
0 | 1191 if (start_row == last_row) { |
1192 // The only thing left to do is handle the null case. | |
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1193 if (is_virtual_call) { |
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1194 jccb(Assembler::zero, found_null); |
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1195 // Receiver did not match any saved receiver and there is no empty row for it. |
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1196 // Increment total counter to indicate polymorphic case. |
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1197 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1198 jmp(done); |
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1199 bind(found_null); |
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1200 } else { |
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1201 jcc(Assembler::notZero, done); |
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1202 } |
0 | 1203 break; |
1204 } | |
1205 // Since null is rare, make it be the branch-taken case. | |
1206 jcc(Assembler::zero, found_null); | |
1207 | |
1208 // Put all the "Case 3" tests here. | |
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1209 record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done, is_virtual_call); |
0 | 1210 |
1211 // Found a null. Keep searching for a matching receiver, | |
1212 // but remember that this is an empty (unused) slot. | |
1213 bind(found_null); | |
1214 } | |
1215 } | |
1216 | |
1217 // In the fall-through case, we found no matching receiver, but we | |
1218 // observed the receiver[start_row] is NULL. | |
1219 | |
1220 // Fill in the receiver field and increment the count. | |
1221 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
1222 set_mdp_data_at(mdp, recvr_offset, receiver); | |
1223 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
1224 movl(reg2, DataLayout::counter_increment); | |
1225 set_mdp_data_at(mdp, count_offset, reg2); | |
1206
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1226 if (start_row > 0) { |
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1227 jmp(done); |
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1228 } |
0 | 1229 } |
1230 | |
1231 // Example state machine code for three profile rows: | |
1232 // // main copy of decision tree, rooted at row[1] | |
1233 // if (row[0].rec == rec) { row[0].incr(); goto done; } | |
1234 // if (row[0].rec != NULL) { | |
1235 // // inner copy of decision tree, rooted at row[1] | |
1236 // if (row[1].rec == rec) { row[1].incr(); goto done; } | |
1237 // if (row[1].rec != NULL) { | |
1238 // // degenerate decision tree, rooted at row[2] | |
1239 // if (row[2].rec == rec) { row[2].incr(); goto done; } | |
1206
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1240 // if (row[2].rec != NULL) { count.incr(); goto done; } // overflow |
0 | 1241 // row[2].init(rec); goto done; |
1242 // } else { | |
1243 // // remember row[1] is empty | |
1244 // if (row[2].rec == rec) { row[2].incr(); goto done; } | |
1245 // row[1].init(rec); goto done; | |
1246 // } | |
1247 // } else { | |
1248 // // remember row[0] is empty | |
1249 // if (row[1].rec == rec) { row[1].incr(); goto done; } | |
1250 // if (row[2].rec == rec) { row[2].incr(); goto done; } | |
1251 // row[0].init(rec); goto done; | |
1252 // } | |
1206
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1253 // done: |
0 | 1254 |
1255 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver, | |
1206
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1256 Register mdp, Register reg2, |
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1257 bool is_virtual_call) { |
0 | 1258 assert(ProfileInterpreter, "must be profiling"); |
1259 Label done; | |
1260 | |
1206
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1261 record_klass_in_profile_helper(receiver, mdp, reg2, 0, done, is_virtual_call); |
0 | 1262 |
1263 bind (done); | |
1264 } | |
1265 | |
1266 void InterpreterMacroAssembler::profile_ret(Register return_bci, | |
1267 Register mdp) { | |
1268 if (ProfileInterpreter) { | |
1269 Label profile_continue; | |
1270 uint row; | |
1271 | |
1272 // If no method data exists, go to profile_continue. | |
1273 test_method_data_pointer(mdp, profile_continue); | |
1274 | |
1275 // Update the total ret count. | |
1276 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
1277 | |
1278 for (row = 0; row < RetData::row_limit(); row++) { | |
1279 Label next_test; | |
1280 | |
1281 // See if return_bci is equal to bci[n]: | |
1282 test_mdp_data_at(mdp, | |
1283 in_bytes(RetData::bci_offset(row)), | |
1284 return_bci, noreg, | |
1285 next_test); | |
1286 | |
1287 // return_bci is equal to bci[n]. Increment the count. | |
1288 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row))); | |
1289 | |
1290 // The method data pointer needs to be updated to reflect the new target. | |
1291 update_mdp_by_offset(mdp, | |
1292 in_bytes(RetData::bci_displacement_offset(row))); | |
1293 jmp(profile_continue); | |
1294 bind(next_test); | |
1295 } | |
1296 | |
1297 update_mdp_for_ret(return_bci); | |
1298 | |
1299 bind(profile_continue); | |
1300 } | |
1301 } | |
1302 | |
1303 | |
1304 void InterpreterMacroAssembler::profile_null_seen(Register mdp) { | |
1305 if (ProfileInterpreter) { | |
1306 Label profile_continue; | |
1307 | |
1308 // If no method data exists, go to profile_continue. | |
1309 test_method_data_pointer(mdp, profile_continue); | |
1310 | |
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1311 set_mdp_flag_at(mdp, BitData::null_seen_byte_constant()); |
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1312 |
0 | 1313 // The method data pointer needs to be updated. |
1314 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1315 if (TypeProfileCasts) { | |
1316 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1317 } | |
1318 update_mdp_by_constant(mdp, mdp_delta); | |
1319 | |
1320 bind(profile_continue); | |
1321 } | |
1322 } | |
1323 | |
1324 | |
1325 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) { | |
1326 if (ProfileInterpreter && TypeProfileCasts) { | |
1327 Label profile_continue; | |
1328 | |
1329 // If no method data exists, go to profile_continue. | |
1330 test_method_data_pointer(mdp, profile_continue); | |
1331 | |
1332 int count_offset = in_bytes(CounterData::count_offset()); | |
1333 // Back up the address, since we have already bumped the mdp. | |
1334 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
1335 | |
1336 // *Decrement* the counter. We expect to see zero or small negatives. | |
1337 increment_mdp_data_at(mdp, count_offset, true); | |
1338 | |
1339 bind (profile_continue); | |
1340 } | |
1341 } | |
1342 | |
1343 | |
1344 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2) { | |
1345 if (ProfileInterpreter) { | |
1346 Label profile_continue; | |
1347 | |
1348 // If no method data exists, go to profile_continue. | |
1349 test_method_data_pointer(mdp, profile_continue); | |
1350 | |
1351 // The method data pointer needs to be updated. | |
1352 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
1353 if (TypeProfileCasts) { | |
1354 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
1355 | |
1356 // Record the object type. | |
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1357 record_klass_in_profile(klass, mdp, reg2, false); |
0 | 1358 } |
1359 update_mdp_by_constant(mdp, mdp_delta); | |
1360 | |
1361 bind(profile_continue); | |
1362 } | |
1363 } | |
1364 | |
1365 | |
1366 void InterpreterMacroAssembler::profile_switch_default(Register mdp) { | |
1367 if (ProfileInterpreter) { | |
1368 Label profile_continue; | |
1369 | |
1370 // If no method data exists, go to profile_continue. | |
1371 test_method_data_pointer(mdp, profile_continue); | |
1372 | |
1373 // Update the default case count | |
1374 increment_mdp_data_at(mdp, | |
1375 in_bytes(MultiBranchData::default_count_offset())); | |
1376 | |
1377 // The method data pointer needs to be updated. | |
1378 update_mdp_by_offset(mdp, | |
1379 in_bytes(MultiBranchData:: | |
1380 default_displacement_offset())); | |
1381 | |
1382 bind(profile_continue); | |
1383 } | |
1384 } | |
1385 | |
1386 | |
1387 void InterpreterMacroAssembler::profile_switch_case(Register index, | |
1388 Register mdp, | |
1389 Register reg2) { | |
1390 if (ProfileInterpreter) { | |
1391 Label profile_continue; | |
1392 | |
1393 // If no method data exists, go to profile_continue. | |
1394 test_method_data_pointer(mdp, profile_continue); | |
1395 | |
1396 // Build the base (index * per_case_size_in_bytes()) + | |
1397 // case_array_offset_in_bytes() | |
1398 movl(reg2, in_bytes(MultiBranchData::per_case_size())); | |
304 | 1399 imulptr(index, reg2); // XXX l ? |
1400 addptr(index, in_bytes(MultiBranchData::case_array_offset())); // XXX l ? | |
0 | 1401 |
1402 // Update the case count | |
1403 increment_mdp_data_at(mdp, | |
1404 index, | |
1405 in_bytes(MultiBranchData::relative_count_offset())); | |
1406 | |
1407 // The method data pointer needs to be updated. | |
1408 update_mdp_by_offset(mdp, | |
1409 index, | |
1410 in_bytes(MultiBranchData:: | |
1411 relative_displacement_offset())); | |
1412 | |
1413 bind(profile_continue); | |
1414 } | |
1415 } | |
1416 | |
1417 | |
304 | 1418 |
0 | 1419 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { |
1420 if (state == atos) { | |
1421 MacroAssembler::verify_oop(reg); | |
1422 } | |
1423 } | |
1424 | |
1425 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
1426 } | |
14676 | 1427 |
1428 // Jump if ((*counter_addr += increment) & mask) satisfies the condition. | |
1429 void InterpreterMacroAssembler::increment_mask_and_jump(Address counter_addr, | |
1430 int increment, int mask, | |
1431 Register scratch, bool preloaded, | |
1432 Condition cond, Label* where) { | |
1433 if (!preloaded) { | |
1434 movl(scratch, counter_addr); | |
1435 } | |
1436 incrementl(scratch, increment); | |
1437 movl(counter_addr, scratch); | |
1438 andl(scratch, mask); | |
1439 jcc(cond, *where); | |
1440 } | |
304 | 1441 #endif // !CC_INTERP |
0 | 1442 |
1443 | |
1444 void InterpreterMacroAssembler::notify_method_entry() { | |
1445 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
1446 // track stack depth. If it is possible to enter interp_only_mode we add | |
1447 // the code to check if the event should be sent. | |
1448 if (JvmtiExport::can_post_interpreter_events()) { | |
1449 Label L; | |
1450 movl(rdx, Address(r15_thread, JavaThread::interp_only_mode_offset())); | |
1451 testl(rdx, rdx); | |
1452 jcc(Assembler::zero, L); | |
1453 call_VM(noreg, CAST_FROM_FN_PTR(address, | |
1454 InterpreterRuntime::post_method_entry)); | |
1455 bind(L); | |
1456 } | |
1457 | |
1458 { | |
1459 SkipIfEqual skip(this, &DTraceMethodProbes, false); | |
1460 get_method(c_rarg1); | |
1461 call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), | |
1462 r15_thread, c_rarg1); | |
1463 } | |
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1464 |
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1465 // RedefineClasses() tracing support for obsolete method entry |
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1466 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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1467 get_method(c_rarg1); |
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1468 call_VM_leaf( |
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1469 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), |
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1470 r15_thread, c_rarg1); |
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1471 } |
0 | 1472 } |
1473 | |
1474 | |
1475 void InterpreterMacroAssembler::notify_method_exit( | |
1476 TosState state, NotifyMethodExitMode mode) { | |
1477 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
1478 // track stack depth. If it is possible to enter interp_only_mode we add | |
1479 // the code to check if the event should be sent. | |
1480 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { | |
1481 Label L; | |
1482 // Note: frame::interpreter_frame_result has a dependency on how the | |
1483 // method result is saved across the call to post_method_exit. If this | |
1484 // is changed then the interpreter_frame_result implementation will | |
1485 // need to be updated too. | |
304 | 1486 |
1487 // For c++ interpreter the result is always stored at a known location in the frame | |
1488 // template interpreter will leave it on the top of the stack. | |
1489 NOT_CC_INTERP(push(state);) | |
0 | 1490 movl(rdx, Address(r15_thread, JavaThread::interp_only_mode_offset())); |
1491 testl(rdx, rdx); | |
1492 jcc(Assembler::zero, L); | |
1493 call_VM(noreg, | |
1494 CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit)); | |
1495 bind(L); | |
304 | 1496 NOT_CC_INTERP(pop(state)); |
0 | 1497 } |
1498 | |
1499 { | |
1500 SkipIfEqual skip(this, &DTraceMethodProbes, false); | |
304 | 1501 NOT_CC_INTERP(push(state)); |
0 | 1502 get_method(c_rarg1); |
1503 call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), | |
1504 r15_thread, c_rarg1); | |
304 | 1505 NOT_CC_INTERP(pop(state)); |
0 | 1506 } |
1507 } | |
1783 | 1508 |