Mercurial > hg > truffle
annotate src/cpu/x86/vm/templateInterpreter_x86_32.cpp @ 628:7bb995fbd3c0
Merge
| author | trims |
|---|---|
| date | Thu, 12 Mar 2009 18:16:36 -0700 |
| parents | 0fbdb4381b99 56aae7be60d4 |
| children | e5b0439ef4ae |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 579 | 2 * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #include "incls/_precompiled.incl" | |
| 26 #include "incls/_templateInterpreter_x86_32.cpp.incl" | |
| 27 | |
| 28 #define __ _masm-> | |
| 29 | |
| 30 | |
| 31 #ifndef CC_INTERP | |
| 32 const int method_offset = frame::interpreter_frame_method_offset * wordSize; | |
| 33 const int bci_offset = frame::interpreter_frame_bcx_offset * wordSize; | |
| 34 const int locals_offset = frame::interpreter_frame_locals_offset * wordSize; | |
| 35 | |
| 36 //------------------------------------------------------------------------------------------------------------------------ | |
| 37 | |
| 38 address TemplateInterpreterGenerator::generate_StackOverflowError_handler() { | |
| 39 address entry = __ pc(); | |
| 40 | |
| 41 // Note: There should be a minimal interpreter frame set up when stack | |
| 42 // overflow occurs since we check explicitly for it now. | |
| 43 // | |
| 44 #ifdef ASSERT | |
| 45 { Label L; | |
| 304 | 46 __ lea(rax, Address(rbp, |
| 0 | 47 frame::interpreter_frame_monitor_block_top_offset * wordSize)); |
| 304 | 48 __ cmpptr(rax, rsp); // rax, = maximal rsp for current rbp, |
| 0 | 49 // (stack grows negative) |
| 50 __ jcc(Assembler::aboveEqual, L); // check if frame is complete | |
| 51 __ stop ("interpreter frame not set up"); | |
| 52 __ bind(L); | |
| 53 } | |
| 54 #endif // ASSERT | |
| 55 // Restore bcp under the assumption that the current frame is still | |
| 56 // interpreted | |
| 57 __ restore_bcp(); | |
| 58 | |
| 59 // expression stack must be empty before entering the VM if an exception | |
| 60 // happened | |
| 61 __ empty_expression_stack(); | |
| 62 __ empty_FPU_stack(); | |
| 63 // throw exception | |
| 64 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_StackOverflowError)); | |
| 65 return entry; | |
| 66 } | |
| 67 | |
| 68 address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler(const char* name) { | |
| 69 address entry = __ pc(); | |
| 70 // expression stack must be empty before entering the VM if an exception happened | |
| 71 __ empty_expression_stack(); | |
| 72 __ empty_FPU_stack(); | |
| 73 // setup parameters | |
| 74 // ??? convention: expect aberrant index in register rbx, | |
| 75 __ lea(rax, ExternalAddress((address)name)); | |
| 76 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException), rax, rbx); | |
| 77 return entry; | |
| 78 } | |
| 79 | |
| 80 address TemplateInterpreterGenerator::generate_ClassCastException_handler() { | |
| 81 address entry = __ pc(); | |
| 82 // object is at TOS | |
| 304 | 83 __ pop(rax); |
| 0 | 84 // expression stack must be empty before entering the VM if an exception |
| 85 // happened | |
| 86 __ empty_expression_stack(); | |
| 87 __ empty_FPU_stack(); | |
| 88 __ call_VM(noreg, | |
| 89 CAST_FROM_FN_PTR(address, | |
| 90 InterpreterRuntime::throw_ClassCastException), | |
| 91 rax); | |
| 92 return entry; | |
| 93 } | |
| 94 | |
| 95 address TemplateInterpreterGenerator::generate_exception_handler_common(const char* name, const char* message, bool pass_oop) { | |
| 96 assert(!pass_oop || message == NULL, "either oop or message but not both"); | |
| 97 address entry = __ pc(); | |
| 98 if (pass_oop) { | |
| 99 // object is at TOS | |
| 304 | 100 __ pop(rbx); |
| 0 | 101 } |
| 102 // expression stack must be empty before entering the VM if an exception happened | |
| 103 __ empty_expression_stack(); | |
| 104 __ empty_FPU_stack(); | |
| 105 // setup parameters | |
| 106 __ lea(rax, ExternalAddress((address)name)); | |
| 107 if (pass_oop) { | |
| 108 __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_klass_exception), rax, rbx); | |
| 109 } else { | |
| 110 if (message != NULL) { | |
| 111 __ lea(rbx, ExternalAddress((address)message)); | |
| 112 } else { | |
|
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113 __ movptr(rbx, NULL_WORD); |
| 0 | 114 } |
| 115 __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), rax, rbx); | |
| 116 } | |
| 117 // throw exception | |
| 118 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
| 119 return entry; | |
| 120 } | |
| 121 | |
| 122 | |
| 123 address TemplateInterpreterGenerator::generate_continuation_for(TosState state) { | |
| 124 address entry = __ pc(); | |
| 125 // NULL last_sp until next java call | |
|
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126 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
| 0 | 127 __ dispatch_next(state); |
| 128 return entry; | |
| 129 } | |
| 130 | |
| 131 | |
| 132 address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step) { | |
| 133 Label interpreter_entry; | |
| 134 address compiled_entry = __ pc(); | |
| 135 | |
| 136 #ifdef COMPILER2 | |
| 137 // The FPU stack is clean if UseSSE >= 2 but must be cleaned in other cases | |
| 138 if ((state == ftos && UseSSE < 1) || (state == dtos && UseSSE < 2)) { | |
| 139 for (int i = 1; i < 8; i++) { | |
| 140 __ ffree(i); | |
| 141 } | |
| 142 } else if (UseSSE < 2) { | |
| 143 __ empty_FPU_stack(); | |
| 144 } | |
| 145 #endif | |
| 146 if ((state == ftos && UseSSE < 1) || (state == dtos && UseSSE < 2)) { | |
| 147 __ MacroAssembler::verify_FPU(1, "generate_return_entry_for compiled"); | |
| 148 } else { | |
| 149 __ MacroAssembler::verify_FPU(0, "generate_return_entry_for compiled"); | |
| 150 } | |
| 151 | |
| 152 __ jmp(interpreter_entry, relocInfo::none); | |
| 153 // emit a sentinel we can test for when converting an interpreter | |
| 154 // entry point to a compiled entry point. | |
| 155 __ a_long(Interpreter::return_sentinel); | |
| 156 __ a_long((int)compiled_entry); | |
| 157 address entry = __ pc(); | |
| 158 __ bind(interpreter_entry); | |
| 159 | |
| 160 // In SSE mode, interpreter returns FP results in xmm0 but they need | |
| 161 // to end up back on the FPU so it can operate on them. | |
| 162 if (state == ftos && UseSSE >= 1) { | |
| 304 | 163 __ subptr(rsp, wordSize); |
| 0 | 164 __ movflt(Address(rsp, 0), xmm0); |
| 165 __ fld_s(Address(rsp, 0)); | |
| 304 | 166 __ addptr(rsp, wordSize); |
| 0 | 167 } else if (state == dtos && UseSSE >= 2) { |
| 304 | 168 __ subptr(rsp, 2*wordSize); |
| 0 | 169 __ movdbl(Address(rsp, 0), xmm0); |
| 170 __ fld_d(Address(rsp, 0)); | |
| 304 | 171 __ addptr(rsp, 2*wordSize); |
| 0 | 172 } |
| 173 | |
| 174 __ MacroAssembler::verify_FPU(state == ftos || state == dtos ? 1 : 0, "generate_return_entry_for in interpreter"); | |
| 175 | |
| 176 // Restore stack bottom in case i2c adjusted stack | |
| 304 | 177 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
| 0 | 178 // and NULL it as marker that rsp is now tos until next java call |
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179 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
| 0 | 180 |
| 181 __ restore_bcp(); | |
| 182 __ restore_locals(); | |
| 183 __ get_cache_and_index_at_bcp(rbx, rcx, 1); | |
| 184 __ movl(rbx, Address(rbx, rcx, | |
| 304 | 185 Address::times_ptr, constantPoolCacheOopDesc::base_offset() + |
| 0 | 186 ConstantPoolCacheEntry::flags_offset())); |
| 304 | 187 __ andptr(rbx, 0xFF); |
| 188 __ lea(rsp, Address(rsp, rbx, Interpreter::stackElementScale())); | |
| 0 | 189 __ dispatch_next(state, step); |
| 190 return entry; | |
| 191 } | |
| 192 | |
| 193 | |
| 194 address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, int step) { | |
| 195 address entry = __ pc(); | |
| 196 | |
| 197 // In SSE mode, FP results are in xmm0 | |
| 198 if (state == ftos && UseSSE > 0) { | |
| 304 | 199 __ subptr(rsp, wordSize); |
| 0 | 200 __ movflt(Address(rsp, 0), xmm0); |
| 201 __ fld_s(Address(rsp, 0)); | |
| 304 | 202 __ addptr(rsp, wordSize); |
| 0 | 203 } else if (state == dtos && UseSSE >= 2) { |
| 304 | 204 __ subptr(rsp, 2*wordSize); |
| 0 | 205 __ movdbl(Address(rsp, 0), xmm0); |
| 206 __ fld_d(Address(rsp, 0)); | |
| 304 | 207 __ addptr(rsp, 2*wordSize); |
| 0 | 208 } |
| 209 | |
| 210 __ MacroAssembler::verify_FPU(state == ftos || state == dtos ? 1 : 0, "generate_deopt_entry_for in interpreter"); | |
| 211 | |
| 212 // The stack is not extended by deopt but we must NULL last_sp as this | |
| 213 // entry is like a "return". | |
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214 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
| 0 | 215 __ restore_bcp(); |
| 216 __ restore_locals(); | |
| 217 // handle exceptions | |
| 218 { Label L; | |
| 219 const Register thread = rcx; | |
| 220 __ get_thread(thread); | |
| 304 | 221 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
| 0 | 222 __ jcc(Assembler::zero, L); |
| 223 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception)); | |
| 224 __ should_not_reach_here(); | |
| 225 __ bind(L); | |
| 226 } | |
| 227 __ dispatch_next(state, step); | |
| 228 return entry; | |
| 229 } | |
| 230 | |
| 231 | |
| 232 int AbstractInterpreter::BasicType_as_index(BasicType type) { | |
| 233 int i = 0; | |
| 234 switch (type) { | |
| 235 case T_BOOLEAN: i = 0; break; | |
| 236 case T_CHAR : i = 1; break; | |
| 237 case T_BYTE : i = 2; break; | |
| 238 case T_SHORT : i = 3; break; | |
| 239 case T_INT : // fall through | |
| 240 case T_LONG : // fall through | |
| 241 case T_VOID : i = 4; break; | |
| 242 case T_FLOAT : i = 5; break; // have to treat float and double separately for SSE | |
| 243 case T_DOUBLE : i = 6; break; | |
| 244 case T_OBJECT : // fall through | |
| 245 case T_ARRAY : i = 7; break; | |
| 246 default : ShouldNotReachHere(); | |
| 247 } | |
| 248 assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds"); | |
| 249 return i; | |
| 250 } | |
| 251 | |
| 252 | |
| 253 address TemplateInterpreterGenerator::generate_result_handler_for(BasicType type) { | |
| 254 address entry = __ pc(); | |
| 255 switch (type) { | |
| 256 case T_BOOLEAN: __ c2bool(rax); break; | |
| 304 | 257 case T_CHAR : __ andptr(rax, 0xFFFF); break; |
| 0 | 258 case T_BYTE : __ sign_extend_byte (rax); break; |
| 259 case T_SHORT : __ sign_extend_short(rax); break; | |
| 260 case T_INT : /* nothing to do */ break; | |
| 261 case T_DOUBLE : | |
| 262 case T_FLOAT : | |
| 263 { const Register t = InterpreterRuntime::SignatureHandlerGenerator::temp(); | |
| 304 | 264 __ pop(t); // remove return address first |
| 0 | 265 __ pop_dtos_to_rsp(); |
| 266 // Must return a result for interpreter or compiler. In SSE | |
| 267 // mode, results are returned in xmm0 and the FPU stack must | |
| 268 // be empty. | |
| 269 if (type == T_FLOAT && UseSSE >= 1) { | |
| 270 // Load ST0 | |
| 271 __ fld_d(Address(rsp, 0)); | |
| 272 // Store as float and empty fpu stack | |
| 273 __ fstp_s(Address(rsp, 0)); | |
| 274 // and reload | |
| 275 __ movflt(xmm0, Address(rsp, 0)); | |
| 276 } else if (type == T_DOUBLE && UseSSE >= 2 ) { | |
| 277 __ movdbl(xmm0, Address(rsp, 0)); | |
| 278 } else { | |
| 279 // restore ST0 | |
| 280 __ fld_d(Address(rsp, 0)); | |
| 281 } | |
| 282 // and pop the temp | |
| 304 | 283 __ addptr(rsp, 2 * wordSize); |
| 284 __ push(t); // restore return address | |
| 0 | 285 } |
| 286 break; | |
| 287 case T_OBJECT : | |
| 288 // retrieve result from frame | |
| 304 | 289 __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize)); |
| 0 | 290 // and verify it |
| 291 __ verify_oop(rax); | |
| 292 break; | |
| 293 default : ShouldNotReachHere(); | |
| 294 } | |
| 295 __ ret(0); // return from result handler | |
| 296 return entry; | |
| 297 } | |
| 298 | |
| 299 address TemplateInterpreterGenerator::generate_safept_entry_for(TosState state, address runtime_entry) { | |
| 300 address entry = __ pc(); | |
| 301 __ push(state); | |
| 302 __ call_VM(noreg, runtime_entry); | |
| 303 __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos)); | |
| 304 return entry; | |
| 305 } | |
| 306 | |
| 307 | |
| 308 // Helpers for commoning out cases in the various type of method entries. | |
| 309 // | |
| 310 | |
| 311 // increment invocation count & check for overflow | |
| 312 // | |
| 313 // Note: checking for negative value instead of overflow | |
| 314 // so we have a 'sticky' overflow test | |
| 315 // | |
| 316 // rbx,: method | |
| 317 // rcx: invocation counter | |
| 318 // | |
| 319 void InterpreterGenerator::generate_counter_incr(Label* overflow, Label* profile_method, Label* profile_method_continue) { | |
| 320 | |
| 321 const Address invocation_counter(rbx, methodOopDesc::invocation_counter_offset() + InvocationCounter::counter_offset()); | |
| 322 const Address backedge_counter (rbx, methodOopDesc::backedge_counter_offset() + InvocationCounter::counter_offset()); | |
| 323 | |
| 324 if (ProfileInterpreter) { // %%% Merge this into methodDataOop | |
| 304 | 325 __ incrementl(Address(rbx,methodOopDesc::interpreter_invocation_counter_offset())); |
| 0 | 326 } |
| 327 // Update standard invocation counters | |
| 328 __ movl(rax, backedge_counter); // load backedge counter | |
| 329 | |
| 304 | 330 __ incrementl(rcx, InvocationCounter::count_increment); |
| 0 | 331 __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits |
| 332 | |
| 333 __ movl(invocation_counter, rcx); // save invocation count | |
| 334 __ addl(rcx, rax); // add both counters | |
| 335 | |
| 336 // profile_method is non-null only for interpreted method so | |
| 337 // profile_method != NULL == !native_call | |
| 338 // BytecodeInterpreter only calls for native so code is elided. | |
| 339 | |
| 340 if (ProfileInterpreter && profile_method != NULL) { | |
| 341 // Test to see if we should create a method data oop | |
| 342 __ cmp32(rcx, | |
| 343 ExternalAddress((address)&InvocationCounter::InterpreterProfileLimit)); | |
| 344 __ jcc(Assembler::less, *profile_method_continue); | |
| 345 | |
| 346 // if no method data exists, go to profile_method | |
| 347 __ test_method_data_pointer(rax, *profile_method); | |
| 348 } | |
| 349 | |
| 350 __ cmp32(rcx, | |
| 351 ExternalAddress((address)&InvocationCounter::InterpreterInvocationLimit)); | |
| 352 __ jcc(Assembler::aboveEqual, *overflow); | |
| 353 | |
| 354 } | |
| 355 | |
| 356 void InterpreterGenerator::generate_counter_overflow(Label* do_continue) { | |
| 357 | |
| 358 // Asm interpreter on entry | |
| 359 // rdi - locals | |
| 360 // rsi - bcp | |
| 361 // rbx, - method | |
| 362 // rdx - cpool | |
| 363 // rbp, - interpreter frame | |
| 364 | |
| 365 // C++ interpreter on entry | |
| 366 // rsi - new interpreter state pointer | |
| 367 // rbp - interpreter frame pointer | |
| 368 // rbx - method | |
| 369 | |
| 370 // On return (i.e. jump to entry_point) [ back to invocation of interpreter ] | |
| 371 // rbx, - method | |
| 372 // rcx - rcvr (assuming there is one) | |
| 373 // top of stack return address of interpreter caller | |
| 374 // rsp - sender_sp | |
| 375 | |
| 376 // C++ interpreter only | |
| 377 // rsi - previous interpreter state pointer | |
| 378 | |
| 379 const Address size_of_parameters(rbx, methodOopDesc::size_of_parameters_offset()); | |
| 380 | |
| 381 // InterpreterRuntime::frequency_counter_overflow takes one argument | |
| 382 // indicating if the counter overflow occurs at a backwards branch (non-NULL bcp). | |
| 383 // The call returns the address of the verified entry point for the method or NULL | |
| 384 // if the compilation did not complete (either went background or bailed out). | |
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385 __ movptr(rax, (intptr_t)false); |
| 0 | 386 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), rax); |
| 387 | |
| 304 | 388 __ movptr(rbx, Address(rbp, method_offset)); // restore methodOop |
| 0 | 389 |
| 390 // Preserve invariant that rsi/rdi contain bcp/locals of sender frame | |
| 391 // and jump to the interpreted entry. | |
| 392 __ jmp(*do_continue, relocInfo::none); | |
| 393 | |
| 394 } | |
| 395 | |
| 396 void InterpreterGenerator::generate_stack_overflow_check(void) { | |
| 397 // see if we've got enough room on the stack for locals plus overhead. | |
| 398 // the expression stack grows down incrementally, so the normal guard | |
| 399 // page mechanism will work for that. | |
| 400 // | |
| 401 // Registers live on entry: | |
| 402 // | |
| 403 // Asm interpreter | |
| 404 // rdx: number of additional locals this frame needs (what we must check) | |
| 405 // rbx,: methodOop | |
| 406 | |
| 407 // destroyed on exit | |
| 408 // rax, | |
| 409 | |
| 410 // NOTE: since the additional locals are also always pushed (wasn't obvious in | |
| 411 // generate_method_entry) so the guard should work for them too. | |
| 412 // | |
| 413 | |
| 414 // monitor entry size: see picture of stack set (generate_method_entry) and frame_x86.hpp | |
| 415 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 416 | |
| 417 // total overhead size: entry_size + (saved rbp, thru expr stack bottom). | |
| 418 // be sure to change this if you add/subtract anything to/from the overhead area | |
| 419 const int overhead_size = -(frame::interpreter_frame_initial_sp_offset*wordSize) + entry_size; | |
| 420 | |
| 421 const int page_size = os::vm_page_size(); | |
| 422 | |
| 423 Label after_frame_check; | |
| 424 | |
| 425 // see if the frame is greater than one page in size. If so, | |
| 426 // then we need to verify there is enough stack space remaining | |
| 427 // for the additional locals. | |
| 428 __ cmpl(rdx, (page_size - overhead_size)/Interpreter::stackElementSize()); | |
| 429 __ jcc(Assembler::belowEqual, after_frame_check); | |
| 430 | |
| 431 // compute rsp as if this were going to be the last frame on | |
| 432 // the stack before the red zone | |
| 433 | |
| 434 Label after_frame_check_pop; | |
| 435 | |
| 304 | 436 __ push(rsi); |
| 0 | 437 |
| 438 const Register thread = rsi; | |
| 439 | |
| 440 __ get_thread(thread); | |
| 441 | |
| 442 const Address stack_base(thread, Thread::stack_base_offset()); | |
| 443 const Address stack_size(thread, Thread::stack_size_offset()); | |
| 444 | |
| 445 // locals + overhead, in bytes | |
| 304 | 446 __ lea(rax, Address(noreg, rdx, Interpreter::stackElementScale(), overhead_size)); |
| 0 | 447 |
| 448 #ifdef ASSERT | |
| 449 Label stack_base_okay, stack_size_okay; | |
| 450 // verify that thread stack base is non-zero | |
| 304 | 451 __ cmpptr(stack_base, (int32_t)NULL_WORD); |
| 0 | 452 __ jcc(Assembler::notEqual, stack_base_okay); |
| 453 __ stop("stack base is zero"); | |
| 454 __ bind(stack_base_okay); | |
| 455 // verify that thread stack size is non-zero | |
| 304 | 456 __ cmpptr(stack_size, 0); |
| 0 | 457 __ jcc(Assembler::notEqual, stack_size_okay); |
| 458 __ stop("stack size is zero"); | |
| 459 __ bind(stack_size_okay); | |
| 460 #endif | |
| 461 | |
| 462 // Add stack base to locals and subtract stack size | |
| 304 | 463 __ addptr(rax, stack_base); |
| 464 __ subptr(rax, stack_size); | |
| 0 | 465 |
| 466 // Use the maximum number of pages we might bang. | |
| 467 const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages : | |
| 468 (StackRedPages+StackYellowPages); | |
| 304 | 469 __ addptr(rax, max_pages * page_size); |
| 0 | 470 |
| 471 // check against the current stack bottom | |
| 304 | 472 __ cmpptr(rsp, rax); |
| 0 | 473 __ jcc(Assembler::above, after_frame_check_pop); |
| 474 | |
| 304 | 475 __ pop(rsi); // get saved bcp / (c++ prev state ). |
| 0 | 476 |
| 304 | 477 __ pop(rax); // get return address |
| 0 | 478 __ jump(ExternalAddress(Interpreter::throw_StackOverflowError_entry())); |
| 479 | |
| 480 // all done with frame size check | |
| 481 __ bind(after_frame_check_pop); | |
| 304 | 482 __ pop(rsi); |
| 0 | 483 |
| 484 __ bind(after_frame_check); | |
| 485 } | |
| 486 | |
| 487 // Allocate monitor and lock method (asm interpreter) | |
| 488 // rbx, - methodOop | |
| 489 // | |
| 490 void InterpreterGenerator::lock_method(void) { | |
| 491 // synchronize method | |
| 492 const Address access_flags (rbx, methodOopDesc::access_flags_offset()); | |
| 493 const Address monitor_block_top (rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 494 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 495 | |
| 496 #ifdef ASSERT | |
| 497 { Label L; | |
| 498 __ movl(rax, access_flags); | |
| 499 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
| 500 __ jcc(Assembler::notZero, L); | |
| 501 __ stop("method doesn't need synchronization"); | |
| 502 __ bind(L); | |
| 503 } | |
| 504 #endif // ASSERT | |
| 505 // get synchronization object | |
| 506 { Label done; | |
| 507 const int mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); | |
| 508 __ movl(rax, access_flags); | |
| 509 __ testl(rax, JVM_ACC_STATIC); | |
| 304 | 510 __ movptr(rax, Address(rdi, Interpreter::local_offset_in_bytes(0))); // get receiver (assume this is frequent case) |
| 0 | 511 __ jcc(Assembler::zero, done); |
| 304 | 512 __ movptr(rax, Address(rbx, methodOopDesc::constants_offset())); |
| 513 __ movptr(rax, Address(rax, constantPoolOopDesc::pool_holder_offset_in_bytes())); | |
| 514 __ movptr(rax, Address(rax, mirror_offset)); | |
| 0 | 515 __ bind(done); |
| 516 } | |
| 517 // add space for monitor & lock | |
| 304 | 518 __ subptr(rsp, entry_size); // add space for a monitor entry |
| 519 __ movptr(monitor_block_top, rsp); // set new monitor block top | |
| 520 __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); // store object | |
| 521 __ mov(rdx, rsp); // object address | |
| 0 | 522 __ lock_object(rdx); |
| 523 } | |
| 524 | |
| 525 // | |
| 526 // Generate a fixed interpreter frame. This is identical setup for interpreted methods | |
| 527 // and for native methods hence the shared code. | |
| 528 | |
| 529 void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { | |
| 530 // initialize fixed part of activation frame | |
| 304 | 531 __ push(rax); // save return address |
| 0 | 532 __ enter(); // save old & set new rbp, |
| 533 | |
| 534 | |
| 304 | 535 __ push(rsi); // set sender sp |
| 536 __ push((int32_t)NULL_WORD); // leave last_sp as null | |
| 537 __ movptr(rsi, Address(rbx,methodOopDesc::const_offset())); // get constMethodOop | |
| 538 __ lea(rsi, Address(rsi,constMethodOopDesc::codes_offset())); // get codebase | |
| 539 __ push(rbx); // save methodOop | |
| 0 | 540 if (ProfileInterpreter) { |
| 541 Label method_data_continue; | |
| 304 | 542 __ movptr(rdx, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
| 543 __ testptr(rdx, rdx); | |
| 0 | 544 __ jcc(Assembler::zero, method_data_continue); |
| 304 | 545 __ addptr(rdx, in_bytes(methodDataOopDesc::data_offset())); |
| 0 | 546 __ bind(method_data_continue); |
| 304 | 547 __ push(rdx); // set the mdp (method data pointer) |
| 0 | 548 } else { |
| 304 | 549 __ push(0); |
| 0 | 550 } |
| 551 | |
| 304 | 552 __ movptr(rdx, Address(rbx, methodOopDesc::constants_offset())); |
| 553 __ movptr(rdx, Address(rdx, constantPoolOopDesc::cache_offset_in_bytes())); | |
| 554 __ push(rdx); // set constant pool cache | |
| 555 __ push(rdi); // set locals pointer | |
| 0 | 556 if (native_call) { |
| 304 | 557 __ push(0); // no bcp |
| 0 | 558 } else { |
| 304 | 559 __ push(rsi); // set bcp |
| 0 | 560 } |
| 304 | 561 __ push(0); // reserve word for pointer to expression stack bottom |
| 562 __ movptr(Address(rsp, 0), rsp); // set expression stack bottom | |
| 0 | 563 } |
| 564 | |
| 565 // End of helpers | |
| 566 | |
| 567 // | |
| 568 // Various method entries | |
| 569 //------------------------------------------------------------------------------------------------------------------------ | |
| 570 // | |
| 571 // | |
| 572 | |
| 573 // Call an accessor method (assuming it is resolved, otherwise drop into vanilla (slow path) entry | |
| 574 | |
| 575 address InterpreterGenerator::generate_accessor_entry(void) { | |
| 576 | |
| 577 // rbx,: methodOop | |
| 578 // rcx: receiver (preserve for slow entry into asm interpreter) | |
| 579 | |
| 580 // rsi: senderSP must preserved for slow path, set SP to it on fast path | |
| 581 | |
| 582 address entry_point = __ pc(); | |
| 583 Label xreturn_path; | |
| 584 | |
| 585 // do fastpath for resolved accessor methods | |
| 586 if (UseFastAccessorMethods) { | |
| 587 Label slow_path; | |
| 588 // If we need a safepoint check, generate full interpreter entry. | |
| 589 ExternalAddress state(SafepointSynchronize::address_of_state()); | |
| 590 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
| 591 SafepointSynchronize::_not_synchronized); | |
| 592 | |
| 593 __ jcc(Assembler::notEqual, slow_path); | |
| 594 // ASM/C++ Interpreter | |
| 595 // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites thereof; parameter size = 1 | |
| 596 // Note: We can only use this code if the getfield has been resolved | |
| 597 // and if we don't have a null-pointer exception => check for | |
| 598 // these conditions first and use slow path if necessary. | |
| 599 // rbx,: method | |
| 600 // rcx: receiver | |
| 304 | 601 __ movptr(rax, Address(rsp, wordSize)); |
| 0 | 602 |
| 603 // check if local 0 != NULL and read field | |
| 304 | 604 __ testptr(rax, rax); |
| 0 | 605 __ jcc(Assembler::zero, slow_path); |
| 606 | |
| 304 | 607 __ movptr(rdi, Address(rbx, methodOopDesc::constants_offset())); |
| 0 | 608 // read first instruction word and extract bytecode @ 1 and index @ 2 |
| 304 | 609 __ movptr(rdx, Address(rbx, methodOopDesc::const_offset())); |
| 0 | 610 __ movl(rdx, Address(rdx, constMethodOopDesc::codes_offset())); |
| 611 // Shift codes right to get the index on the right. | |
| 612 // The bytecode fetched looks like <index><0xb4><0x2a> | |
| 613 __ shrl(rdx, 2*BitsPerByte); | |
| 614 __ shll(rdx, exact_log2(in_words(ConstantPoolCacheEntry::size()))); | |
| 304 | 615 __ movptr(rdi, Address(rdi, constantPoolOopDesc::cache_offset_in_bytes())); |
| 0 | 616 |
| 617 // rax,: local 0 | |
| 618 // rbx,: method | |
| 619 // rcx: receiver - do not destroy since it is needed for slow path! | |
| 620 // rcx: scratch | |
| 621 // rdx: constant pool cache index | |
| 622 // rdi: constant pool cache | |
| 623 // rsi: sender sp | |
| 624 | |
| 625 // check if getfield has been resolved and read constant pool cache entry | |
| 626 // check the validity of the cache entry by testing whether _indices field | |
| 627 // contains Bytecode::_getfield in b1 byte. | |
| 628 assert(in_words(ConstantPoolCacheEntry::size()) == 4, "adjust shift below"); | |
| 629 __ movl(rcx, | |
| 630 Address(rdi, | |
| 631 rdx, | |
| 304 | 632 Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::indices_offset())); |
| 0 | 633 __ shrl(rcx, 2*BitsPerByte); |
| 634 __ andl(rcx, 0xFF); | |
| 635 __ cmpl(rcx, Bytecodes::_getfield); | |
| 636 __ jcc(Assembler::notEqual, slow_path); | |
| 637 | |
| 638 // Note: constant pool entry is not valid before bytecode is resolved | |
| 304 | 639 __ movptr(rcx, |
| 640 Address(rdi, | |
| 641 rdx, | |
| 642 Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f2_offset())); | |
| 0 | 643 __ movl(rdx, |
| 644 Address(rdi, | |
| 645 rdx, | |
| 304 | 646 Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::flags_offset())); |
| 0 | 647 |
| 648 Label notByte, notShort, notChar; | |
| 649 const Address field_address (rax, rcx, Address::times_1); | |
| 650 | |
| 651 // Need to differentiate between igetfield, agetfield, bgetfield etc. | |
| 652 // because they are different sizes. | |
| 653 // Use the type from the constant pool cache | |
| 654 __ shrl(rdx, ConstantPoolCacheEntry::tosBits); | |
| 655 // Make sure we don't need to mask rdx for tosBits after the above shift | |
| 656 ConstantPoolCacheEntry::verify_tosBits(); | |
| 657 __ cmpl(rdx, btos); | |
| 658 __ jcc(Assembler::notEqual, notByte); | |
| 659 __ load_signed_byte(rax, field_address); | |
| 660 __ jmp(xreturn_path); | |
| 661 | |
| 662 __ bind(notByte); | |
| 663 __ cmpl(rdx, stos); | |
| 664 __ jcc(Assembler::notEqual, notShort); | |
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665 __ load_signed_short(rax, field_address); |
| 0 | 666 __ jmp(xreturn_path); |
| 667 | |
| 668 __ bind(notShort); | |
| 669 __ cmpl(rdx, ctos); | |
| 670 __ jcc(Assembler::notEqual, notChar); | |
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671 __ load_unsigned_short(rax, field_address); |
| 0 | 672 __ jmp(xreturn_path); |
| 673 | |
| 674 __ bind(notChar); | |
| 675 #ifdef ASSERT | |
| 676 Label okay; | |
| 677 __ cmpl(rdx, atos); | |
| 678 __ jcc(Assembler::equal, okay); | |
| 679 __ cmpl(rdx, itos); | |
| 680 __ jcc(Assembler::equal, okay); | |
| 681 __ stop("what type is this?"); | |
| 682 __ bind(okay); | |
| 683 #endif // ASSERT | |
| 684 // All the rest are a 32 bit wordsize | |
| 304 | 685 // This is ok for now. Since fast accessors should be going away |
| 686 __ movptr(rax, field_address); | |
| 0 | 687 |
| 688 __ bind(xreturn_path); | |
| 689 | |
| 690 // _ireturn/_areturn | |
| 304 | 691 __ pop(rdi); // get return address |
| 692 __ mov(rsp, rsi); // set sp to sender sp | |
| 0 | 693 __ jmp(rdi); |
| 694 | |
| 695 // generate a vanilla interpreter entry as the slow path | |
| 696 __ bind(slow_path); | |
| 697 | |
| 698 (void) generate_normal_entry(false); | |
| 699 return entry_point; | |
| 700 } | |
| 701 return NULL; | |
| 702 | |
| 703 } | |
| 704 | |
| 705 // | |
| 706 // Interpreter stub for calling a native method. (asm interpreter) | |
| 707 // This sets up a somewhat different looking stack for calling the native method | |
| 708 // than the typical interpreter frame setup. | |
| 709 // | |
| 710 | |
| 711 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
| 712 // determine code generation flags | |
| 713 bool inc_counter = UseCompiler || CountCompiledCalls; | |
| 714 | |
| 715 // rbx,: methodOop | |
| 716 // rsi: sender sp | |
| 717 // rsi: previous interpreter state (C++ interpreter) must preserve | |
| 718 address entry_point = __ pc(); | |
| 719 | |
| 720 | |
| 721 const Address size_of_parameters(rbx, methodOopDesc::size_of_parameters_offset()); | |
| 722 const Address invocation_counter(rbx, methodOopDesc::invocation_counter_offset() + InvocationCounter::counter_offset()); | |
| 723 const Address access_flags (rbx, methodOopDesc::access_flags_offset()); | |
| 724 | |
| 725 // get parameter size (always needed) | |
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726 __ load_unsigned_short(rcx, size_of_parameters); |
| 0 | 727 |
| 728 // native calls don't need the stack size check since they have no expression stack | |
| 729 // and the arguments are already on the stack and we only add a handful of words | |
| 730 // to the stack | |
| 731 | |
| 732 // rbx,: methodOop | |
| 733 // rcx: size of parameters | |
| 734 // rsi: sender sp | |
| 735 | |
| 304 | 736 __ pop(rax); // get return address |
| 0 | 737 // for natives the size of locals is zero |
| 738 | |
| 739 // compute beginning of parameters (rdi) | |
| 304 | 740 __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize)); |
| 0 | 741 |
| 742 | |
| 743 // add 2 zero-initialized slots for native calls | |
| 744 // NULL result handler | |
| 304 | 745 __ push((int32_t)NULL_WORD); |
| 0 | 746 // NULL oop temp (mirror or jni oop result) |
| 304 | 747 __ push((int32_t)NULL_WORD); |
| 0 | 748 |
| 749 if (inc_counter) __ movl(rcx, invocation_counter); // (pre-)fetch invocation count | |
| 750 // initialize fixed part of activation frame | |
| 751 | |
| 752 generate_fixed_frame(true); | |
| 753 | |
| 754 // make sure method is native & not abstract | |
| 755 #ifdef ASSERT | |
| 756 __ movl(rax, access_flags); | |
| 757 { | |
| 758 Label L; | |
| 759 __ testl(rax, JVM_ACC_NATIVE); | |
| 760 __ jcc(Assembler::notZero, L); | |
| 761 __ stop("tried to execute non-native method as native"); | |
| 762 __ bind(L); | |
| 763 } | |
| 764 { Label L; | |
| 765 __ testl(rax, JVM_ACC_ABSTRACT); | |
| 766 __ jcc(Assembler::zero, L); | |
| 767 __ stop("tried to execute abstract method in interpreter"); | |
| 768 __ bind(L); | |
| 769 } | |
| 770 #endif | |
| 771 | |
| 772 // Since at this point in the method invocation the exception handler | |
| 773 // would try to exit the monitor of synchronized methods which hasn't | |
| 774 // been entered yet, we set the thread local variable | |
| 775 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
| 776 // check this flag. | |
| 777 | |
| 778 __ get_thread(rax); | |
| 779 const Address do_not_unlock_if_synchronized(rax, | |
| 780 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
| 781 __ movbool(do_not_unlock_if_synchronized, true); | |
| 782 | |
| 783 // increment invocation count & check for overflow | |
| 784 Label invocation_counter_overflow; | |
| 785 if (inc_counter) { | |
| 786 generate_counter_incr(&invocation_counter_overflow, NULL, NULL); | |
| 787 } | |
| 788 | |
| 789 Label continue_after_compile; | |
| 790 __ bind(continue_after_compile); | |
| 791 | |
| 792 bang_stack_shadow_pages(true); | |
| 793 | |
| 794 // reset the _do_not_unlock_if_synchronized flag | |
| 795 __ get_thread(rax); | |
| 796 __ movbool(do_not_unlock_if_synchronized, false); | |
| 797 | |
| 798 // check for synchronized methods | |
| 799 // Must happen AFTER invocation_counter check and stack overflow check, | |
| 800 // so method is not locked if overflows. | |
| 801 // | |
| 802 if (synchronized) { | |
| 803 lock_method(); | |
| 804 } else { | |
| 805 // no synchronization necessary | |
| 806 #ifdef ASSERT | |
| 807 { Label L; | |
| 808 __ movl(rax, access_flags); | |
| 809 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
| 810 __ jcc(Assembler::zero, L); | |
| 811 __ stop("method needs synchronization"); | |
| 812 __ bind(L); | |
| 813 } | |
| 814 #endif | |
| 815 } | |
| 816 | |
| 817 // start execution | |
| 818 #ifdef ASSERT | |
| 819 { Label L; | |
| 820 const Address monitor_block_top (rbp, | |
| 821 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 304 | 822 __ movptr(rax, monitor_block_top); |
| 823 __ cmpptr(rax, rsp); | |
| 0 | 824 __ jcc(Assembler::equal, L); |
| 825 __ stop("broken stack frame setup in interpreter"); | |
| 826 __ bind(L); | |
| 827 } | |
| 828 #endif | |
| 829 | |
| 830 // jvmti/dtrace support | |
| 831 __ notify_method_entry(); | |
| 832 | |
| 833 // work registers | |
| 834 const Register method = rbx; | |
| 835 const Register thread = rdi; | |
| 836 const Register t = rcx; | |
| 837 | |
| 838 // allocate space for parameters | |
| 839 __ get_method(method); | |
| 840 __ verify_oop(method); | |
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841 __ load_unsigned_short(t, Address(method, methodOopDesc::size_of_parameters_offset())); |
| 304 | 842 __ shlptr(t, Interpreter::logStackElementSize()); |
| 843 __ addptr(t, 2*wordSize); // allocate two more slots for JNIEnv and possible mirror | |
| 844 __ subptr(rsp, t); | |
| 845 __ andptr(rsp, -(StackAlignmentInBytes)); // gcc needs 16 byte aligned stacks to do XMM intrinsics | |
| 0 | 846 |
| 847 // get signature handler | |
| 848 { Label L; | |
| 304 | 849 __ movptr(t, Address(method, methodOopDesc::signature_handler_offset())); |
| 850 __ testptr(t, t); | |
| 0 | 851 __ jcc(Assembler::notZero, L); |
| 852 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method); | |
| 853 __ get_method(method); | |
| 304 | 854 __ movptr(t, Address(method, methodOopDesc::signature_handler_offset())); |
| 0 | 855 __ bind(L); |
| 856 } | |
| 857 | |
| 858 // call signature handler | |
| 859 assert(InterpreterRuntime::SignatureHandlerGenerator::from() == rdi, "adjust this code"); | |
| 860 assert(InterpreterRuntime::SignatureHandlerGenerator::to () == rsp, "adjust this code"); | |
| 861 assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == t , "adjust this code"); | |
| 862 // The generated handlers do not touch RBX (the method oop). | |
| 863 // However, large signatures cannot be cached and are generated | |
| 864 // each time here. The slow-path generator will blow RBX | |
| 865 // sometime, so we must reload it after the call. | |
| 866 __ call(t); | |
| 867 __ get_method(method); // slow path call blows RBX on DevStudio 5.0 | |
| 868 | |
| 869 // result handler is in rax, | |
| 870 // set result handler | |
| 304 | 871 __ movptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize), rax); |
| 0 | 872 |
| 873 // pass mirror handle if static call | |
| 874 { Label L; | |
| 875 const int mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); | |
| 876 __ movl(t, Address(method, methodOopDesc::access_flags_offset())); | |
| 877 __ testl(t, JVM_ACC_STATIC); | |
| 878 __ jcc(Assembler::zero, L); | |
| 879 // get mirror | |
| 304 | 880 __ movptr(t, Address(method, methodOopDesc:: constants_offset())); |
| 881 __ movptr(t, Address(t, constantPoolOopDesc::pool_holder_offset_in_bytes())); | |
| 882 __ movptr(t, Address(t, mirror_offset)); | |
| 0 | 883 // copy mirror into activation frame |
| 304 | 884 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), t); |
| 0 | 885 // pass handle to mirror |
| 304 | 886 __ lea(t, Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); |
| 887 __ movptr(Address(rsp, wordSize), t); | |
| 0 | 888 __ bind(L); |
| 889 } | |
| 890 | |
| 891 // get native function entry point | |
| 892 { Label L; | |
| 304 | 893 __ movptr(rax, Address(method, methodOopDesc::native_function_offset())); |
| 0 | 894 ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); |
| 304 | 895 __ cmpptr(rax, unsatisfied.addr()); |
| 0 | 896 __ jcc(Assembler::notEqual, L); |
| 897 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method); | |
| 898 __ get_method(method); | |
| 899 __ verify_oop(method); | |
| 304 | 900 __ movptr(rax, Address(method, methodOopDesc::native_function_offset())); |
| 0 | 901 __ bind(L); |
| 902 } | |
| 903 | |
| 904 // pass JNIEnv | |
| 905 __ get_thread(thread); | |
| 304 | 906 __ lea(t, Address(thread, JavaThread::jni_environment_offset())); |
| 907 __ movptr(Address(rsp, 0), t); | |
| 0 | 908 |
| 909 // set_last_Java_frame_before_call | |
| 910 // It is enough that the pc() | |
| 911 // points into the right code segment. It does not have to be the correct return pc. | |
| 912 __ set_last_Java_frame(thread, noreg, rbp, __ pc()); | |
| 913 | |
| 914 // change thread state | |
| 915 #ifdef ASSERT | |
| 916 { Label L; | |
| 917 __ movl(t, Address(thread, JavaThread::thread_state_offset())); | |
| 918 __ cmpl(t, _thread_in_Java); | |
| 919 __ jcc(Assembler::equal, L); | |
| 920 __ stop("Wrong thread state in native stub"); | |
| 921 __ bind(L); | |
| 922 } | |
| 923 #endif | |
| 924 | |
| 925 // Change state to native | |
| 926 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native); | |
| 927 __ call(rax); | |
| 928 | |
| 929 // result potentially in rdx:rax or ST0 | |
| 930 | |
| 931 // Either restore the MXCSR register after returning from the JNI Call | |
| 932 // or verify that it wasn't changed. | |
| 933 if (VM_Version::supports_sse()) { | |
| 934 if (RestoreMXCSROnJNICalls) { | |
| 935 __ ldmxcsr(ExternalAddress(StubRoutines::addr_mxcsr_std())); | |
| 936 } | |
| 937 else if (CheckJNICalls ) { | |
| 304 | 938 __ call(RuntimeAddress(StubRoutines::x86::verify_mxcsr_entry())); |
| 0 | 939 } |
| 940 } | |
| 941 | |
| 942 // Either restore the x87 floating pointer control word after returning | |
| 943 // from the JNI call or verify that it wasn't changed. | |
| 944 if (CheckJNICalls) { | |
| 304 | 945 __ call(RuntimeAddress(StubRoutines::x86::verify_fpu_cntrl_wrd_entry())); |
| 0 | 946 } |
| 947 | |
| 948 // save potential result in ST(0) & rdx:rax | |
| 949 // (if result handler is the T_FLOAT or T_DOUBLE handler, result must be in ST0 - | |
| 950 // the check is necessary to avoid potential Intel FPU overflow problems by saving/restoring 'empty' FPU registers) | |
| 951 // It is safe to do this push because state is _thread_in_native and return address will be found | |
| 952 // via _last_native_pc and not via _last_jave_sp | |
| 953 | |
| 954 // NOTE: the order of theses push(es) is known to frame::interpreter_frame_result. | |
| 955 // If the order changes or anything else is added to the stack the code in | |
| 956 // interpreter_frame_result will have to be changed. | |
| 957 | |
| 958 { Label L; | |
| 959 Label push_double; | |
| 960 ExternalAddress float_handler(AbstractInterpreter::result_handler(T_FLOAT)); | |
| 961 ExternalAddress double_handler(AbstractInterpreter::result_handler(T_DOUBLE)); | |
| 962 __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), | |
| 963 float_handler.addr()); | |
| 964 __ jcc(Assembler::equal, push_double); | |
| 965 __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), | |
| 966 double_handler.addr()); | |
| 967 __ jcc(Assembler::notEqual, L); | |
| 968 __ bind(push_double); | |
| 969 __ push(dtos); | |
| 970 __ bind(L); | |
| 971 } | |
| 972 __ push(ltos); | |
| 973 | |
| 974 // change thread state | |
| 975 __ get_thread(thread); | |
| 976 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native_trans); | |
| 977 if(os::is_MP()) { | |
| 978 if (UseMembar) { | |
| 304 | 979 // Force this write out before the read below |
| 980 __ membar(Assembler::Membar_mask_bits( | |
| 981 Assembler::LoadLoad | Assembler::LoadStore | | |
| 982 Assembler::StoreLoad | Assembler::StoreStore)); | |
| 0 | 983 } else { |
| 984 // Write serialization page so VM thread can do a pseudo remote membar. | |
| 985 // We use the current thread pointer to calculate a thread specific | |
| 986 // offset to write to within the page. This minimizes bus traffic | |
| 987 // due to cache line collision. | |
| 988 __ serialize_memory(thread, rcx); | |
| 989 } | |
| 990 } | |
| 991 | |
| 992 if (AlwaysRestoreFPU) { | |
| 993 // Make sure the control word is correct. | |
| 994 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); | |
| 995 } | |
| 996 | |
| 997 // check for safepoint operation in progress and/or pending suspend requests | |
| 998 { Label Continue; | |
| 999 | |
| 1000 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
| 1001 SafepointSynchronize::_not_synchronized); | |
| 1002 | |
| 1003 Label L; | |
| 1004 __ jcc(Assembler::notEqual, L); | |
| 1005 __ cmpl(Address(thread, JavaThread::suspend_flags_offset()), 0); | |
| 1006 __ jcc(Assembler::equal, Continue); | |
| 1007 __ bind(L); | |
| 1008 | |
| 1009 // Don't use call_VM as it will see a possible pending exception and forward it | |
| 1010 // and never return here preventing us from clearing _last_native_pc down below. | |
| 1011 // Also can't use call_VM_leaf either as it will check to see if rsi & rdi are | |
| 1012 // preserved and correspond to the bcp/locals pointers. So we do a runtime call | |
| 1013 // by hand. | |
| 1014 // | |
| 304 | 1015 __ push(thread); |
| 0 | 1016 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, |
| 1017 JavaThread::check_special_condition_for_native_trans))); | |
| 1018 __ increment(rsp, wordSize); | |
| 1019 __ get_thread(thread); | |
| 1020 | |
| 1021 __ bind(Continue); | |
| 1022 } | |
| 1023 | |
| 1024 // change thread state | |
| 1025 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_Java); | |
| 1026 | |
| 1027 __ reset_last_Java_frame(thread, true, true); | |
| 1028 | |
| 1029 // reset handle block | |
| 304 | 1030 __ movptr(t, Address(thread, JavaThread::active_handles_offset())); |
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1031 __ movptr(Address(t, JNIHandleBlock::top_offset_in_bytes()), NULL_WORD); |
| 0 | 1032 |
| 1033 // If result was an oop then unbox and save it in the frame | |
| 1034 { Label L; | |
| 1035 Label no_oop, store_result; | |
| 1036 ExternalAddress handler(AbstractInterpreter::result_handler(T_OBJECT)); | |
| 1037 __ cmpptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize), | |
| 1038 handler.addr()); | |
| 1039 __ jcc(Assembler::notEqual, no_oop); | |
| 304 | 1040 __ cmpptr(Address(rsp, 0), (int32_t)NULL_WORD); |
| 0 | 1041 __ pop(ltos); |
| 304 | 1042 __ testptr(rax, rax); |
| 0 | 1043 __ jcc(Assembler::zero, store_result); |
| 1044 // unbox | |
| 304 | 1045 __ movptr(rax, Address(rax, 0)); |
| 0 | 1046 __ bind(store_result); |
| 304 | 1047 __ movptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset)*wordSize), rax); |
| 0 | 1048 // keep stack depth as expected by pushing oop which will eventually be discarded |
| 1049 __ push(ltos); | |
| 1050 __ bind(no_oop); | |
| 1051 } | |
| 1052 | |
| 1053 { | |
| 1054 Label no_reguard; | |
| 1055 __ cmpl(Address(thread, JavaThread::stack_guard_state_offset()), JavaThread::stack_guard_yellow_disabled); | |
| 1056 __ jcc(Assembler::notEqual, no_reguard); | |
| 1057 | |
| 304 | 1058 __ pusha(); |
| 0 | 1059 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); |
| 304 | 1060 __ popa(); |
| 0 | 1061 |
| 1062 __ bind(no_reguard); | |
| 1063 } | |
| 1064 | |
| 1065 // restore rsi to have legal interpreter frame, | |
| 1066 // i.e., bci == 0 <=> rsi == code_base() | |
| 1067 // Can't call_VM until bcp is within reasonable. | |
| 1068 __ get_method(method); // method is junk from thread_in_native to now. | |
| 1069 __ verify_oop(method); | |
| 304 | 1070 __ movptr(rsi, Address(method,methodOopDesc::const_offset())); // get constMethodOop |
| 1071 __ lea(rsi, Address(rsi,constMethodOopDesc::codes_offset())); // get codebase | |
| 0 | 1072 |
| 1073 // handle exceptions (exception handling will handle unlocking!) | |
| 1074 { Label L; | |
| 304 | 1075 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
| 0 | 1076 __ jcc(Assembler::zero, L); |
| 1077 // Note: At some point we may want to unify this with the code used in call_VM_base(); | |
| 1078 // i.e., we should use the StubRoutines::forward_exception code. For now this | |
| 1079 // doesn't work here because the rsp is not correctly set at this point. | |
| 1080 __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception)); | |
| 1081 __ should_not_reach_here(); | |
| 1082 __ bind(L); | |
| 1083 } | |
| 1084 | |
| 1085 // do unlocking if necessary | |
| 1086 { Label L; | |
| 1087 __ movl(t, Address(method, methodOopDesc::access_flags_offset())); | |
| 1088 __ testl(t, JVM_ACC_SYNCHRONIZED); | |
| 1089 __ jcc(Assembler::zero, L); | |
| 1090 // the code below should be shared with interpreter macro assembler implementation | |
| 1091 { Label unlock; | |
| 1092 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
| 1093 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
| 1094 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); | |
| 1095 | |
| 304 | 1096 __ lea(rdx, monitor); // address of first monitor |
| 0 | 1097 |
| 304 | 1098 __ movptr(t, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); |
| 1099 __ testptr(t, t); | |
| 0 | 1100 __ jcc(Assembler::notZero, unlock); |
| 1101 | |
| 1102 // Entry already unlocked, need to throw exception | |
| 1103 __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 1104 __ should_not_reach_here(); | |
| 1105 | |
| 1106 __ bind(unlock); | |
| 1107 __ unlock_object(rdx); | |
| 1108 } | |
| 1109 __ bind(L); | |
| 1110 } | |
| 1111 | |
| 1112 // jvmti/dtrace support | |
| 1113 // Note: This must happen _after_ handling/throwing any exceptions since | |
| 1114 // the exception handler code notifies the runtime of method exits | |
| 1115 // too. If this happens before, method entry/exit notifications are | |
| 1116 // not properly paired (was bug - gri 11/22/99). | |
| 1117 __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); | |
| 1118 | |
| 1119 // restore potential result in rdx:rax, call result handler to restore potential result in ST0 & handle result | |
| 1120 __ pop(ltos); | |
| 304 | 1121 __ movptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); |
| 0 | 1122 __ call(t); |
| 1123 | |
| 1124 // remove activation | |
| 304 | 1125 __ movptr(t, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
| 0 | 1126 __ leave(); // remove frame anchor |
| 304 | 1127 __ pop(rdi); // get return address |
| 1128 __ mov(rsp, t); // set sp to sender sp | |
| 0 | 1129 __ jmp(rdi); |
| 1130 | |
| 1131 if (inc_counter) { | |
| 1132 // Handle overflow of counter and compile method | |
| 1133 __ bind(invocation_counter_overflow); | |
| 1134 generate_counter_overflow(&continue_after_compile); | |
| 1135 } | |
| 1136 | |
| 1137 return entry_point; | |
| 1138 } | |
| 1139 | |
| 1140 // | |
| 1141 // Generic interpreted method entry to (asm) interpreter | |
| 1142 // | |
| 1143 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
| 1144 // determine code generation flags | |
| 1145 bool inc_counter = UseCompiler || CountCompiledCalls; | |
| 1146 | |
| 1147 // rbx,: methodOop | |
| 1148 // rsi: sender sp | |
| 1149 address entry_point = __ pc(); | |
| 1150 | |
| 1151 | |
| 1152 const Address size_of_parameters(rbx, methodOopDesc::size_of_parameters_offset()); | |
| 1153 const Address size_of_locals (rbx, methodOopDesc::size_of_locals_offset()); | |
| 1154 const Address invocation_counter(rbx, methodOopDesc::invocation_counter_offset() + InvocationCounter::counter_offset()); | |
| 1155 const Address access_flags (rbx, methodOopDesc::access_flags_offset()); | |
| 1156 | |
| 1157 // get parameter size (always needed) | |
|
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1158 __ load_unsigned_short(rcx, size_of_parameters); |
| 0 | 1159 |
| 1160 // rbx,: methodOop | |
| 1161 // rcx: size of parameters | |
| 1162 | |
| 1163 // rsi: sender_sp (could differ from sp+wordSize if we were called via c2i ) | |
| 1164 | |
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1165 __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words |
| 0 | 1166 __ subl(rdx, rcx); // rdx = no. of additional locals |
| 1167 | |
| 1168 // see if we've got enough room on the stack for locals plus overhead. | |
| 1169 generate_stack_overflow_check(); | |
| 1170 | |
| 1171 // get return address | |
| 304 | 1172 __ pop(rax); |
| 0 | 1173 |
| 1174 // compute beginning of parameters (rdi) | |
| 304 | 1175 __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize)); |
| 0 | 1176 |
| 1177 // rdx - # of additional locals | |
| 1178 // allocate space for locals | |
| 1179 // explicitly initialize locals | |
| 1180 { | |
| 1181 Label exit, loop; | |
| 1182 __ testl(rdx, rdx); | |
| 1183 __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0 | |
| 1184 __ bind(loop); | |
| 304 | 1185 if (TaggedStackInterpreter) { |
| 1186 __ push((int32_t)NULL_WORD); // push tag | |
| 1187 } | |
| 1188 __ push((int32_t)NULL_WORD); // initialize local variables | |
| 0 | 1189 __ decrement(rdx); // until everything initialized |
| 1190 __ jcc(Assembler::greater, loop); | |
| 1191 __ bind(exit); | |
| 1192 } | |
| 1193 | |
| 1194 if (inc_counter) __ movl(rcx, invocation_counter); // (pre-)fetch invocation count | |
| 1195 // initialize fixed part of activation frame | |
| 1196 generate_fixed_frame(false); | |
| 1197 | |
| 1198 // make sure method is not native & not abstract | |
| 1199 #ifdef ASSERT | |
| 1200 __ movl(rax, access_flags); | |
| 1201 { | |
| 1202 Label L; | |
| 1203 __ testl(rax, JVM_ACC_NATIVE); | |
| 1204 __ jcc(Assembler::zero, L); | |
| 1205 __ stop("tried to execute native method as non-native"); | |
| 1206 __ bind(L); | |
| 1207 } | |
| 1208 { Label L; | |
| 1209 __ testl(rax, JVM_ACC_ABSTRACT); | |
| 1210 __ jcc(Assembler::zero, L); | |
| 1211 __ stop("tried to execute abstract method in interpreter"); | |
| 1212 __ bind(L); | |
| 1213 } | |
| 1214 #endif | |
| 1215 | |
| 1216 // Since at this point in the method invocation the exception handler | |
| 1217 // would try to exit the monitor of synchronized methods which hasn't | |
| 1218 // been entered yet, we set the thread local variable | |
| 1219 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
| 1220 // check this flag. | |
| 1221 | |
| 1222 __ get_thread(rax); | |
| 1223 const Address do_not_unlock_if_synchronized(rax, | |
| 1224 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
| 1225 __ movbool(do_not_unlock_if_synchronized, true); | |
| 1226 | |
| 1227 // increment invocation count & check for overflow | |
| 1228 Label invocation_counter_overflow; | |
| 1229 Label profile_method; | |
| 1230 Label profile_method_continue; | |
| 1231 if (inc_counter) { | |
| 1232 generate_counter_incr(&invocation_counter_overflow, &profile_method, &profile_method_continue); | |
| 1233 if (ProfileInterpreter) { | |
| 1234 __ bind(profile_method_continue); | |
| 1235 } | |
| 1236 } | |
| 1237 Label continue_after_compile; | |
| 1238 __ bind(continue_after_compile); | |
| 1239 | |
| 1240 bang_stack_shadow_pages(false); | |
| 1241 | |
| 1242 // reset the _do_not_unlock_if_synchronized flag | |
| 1243 __ get_thread(rax); | |
| 1244 __ movbool(do_not_unlock_if_synchronized, false); | |
| 1245 | |
| 1246 // check for synchronized methods | |
| 1247 // Must happen AFTER invocation_counter check and stack overflow check, | |
| 1248 // so method is not locked if overflows. | |
| 1249 // | |
| 1250 if (synchronized) { | |
| 1251 // Allocate monitor and lock method | |
| 1252 lock_method(); | |
| 1253 } else { | |
| 1254 // no synchronization necessary | |
| 1255 #ifdef ASSERT | |
| 1256 { Label L; | |
| 1257 __ movl(rax, access_flags); | |
| 1258 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
| 1259 __ jcc(Assembler::zero, L); | |
| 1260 __ stop("method needs synchronization"); | |
| 1261 __ bind(L); | |
| 1262 } | |
| 1263 #endif | |
| 1264 } | |
| 1265 | |
| 1266 // start execution | |
| 1267 #ifdef ASSERT | |
| 1268 { Label L; | |
| 1269 const Address monitor_block_top (rbp, | |
| 1270 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 304 | 1271 __ movptr(rax, monitor_block_top); |
| 1272 __ cmpptr(rax, rsp); | |
| 0 | 1273 __ jcc(Assembler::equal, L); |
| 1274 __ stop("broken stack frame setup in interpreter"); | |
| 1275 __ bind(L); | |
| 1276 } | |
| 1277 #endif | |
| 1278 | |
| 1279 // jvmti support | |
| 1280 __ notify_method_entry(); | |
| 1281 | |
| 1282 __ dispatch_next(vtos); | |
| 1283 | |
| 1284 // invocation counter overflow | |
| 1285 if (inc_counter) { | |
| 1286 if (ProfileInterpreter) { | |
| 1287 // We have decided to profile this method in the interpreter | |
| 1288 __ bind(profile_method); | |
| 1289 | |
| 1290 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method), rsi, true); | |
| 1291 | |
| 304 | 1292 __ movptr(rbx, Address(rbp, method_offset)); // restore methodOop |
| 1293 __ movptr(rax, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); | |
| 1294 __ movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax); | |
| 0 | 1295 __ test_method_data_pointer(rax, profile_method_continue); |
| 304 | 1296 __ addptr(rax, in_bytes(methodDataOopDesc::data_offset())); |
| 1297 __ movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax); | |
| 0 | 1298 __ jmp(profile_method_continue); |
| 1299 } | |
| 1300 // Handle overflow of counter and compile method | |
| 1301 __ bind(invocation_counter_overflow); | |
| 1302 generate_counter_overflow(&continue_after_compile); | |
| 1303 } | |
| 1304 | |
| 1305 return entry_point; | |
| 1306 } | |
| 1307 | |
| 1308 //------------------------------------------------------------------------------------------------------------------------ | |
| 1309 // Entry points | |
| 1310 // | |
| 1311 // Here we generate the various kind of entries into the interpreter. | |
| 1312 // The two main entry type are generic bytecode methods and native call method. | |
| 1313 // These both come in synchronized and non-synchronized versions but the | |
| 1314 // frame layout they create is very similar. The other method entry | |
| 1315 // types are really just special purpose entries that are really entry | |
| 1316 // and interpretation all in one. These are for trivial methods like | |
| 1317 // accessor, empty, or special math methods. | |
| 1318 // | |
| 1319 // When control flow reaches any of the entry types for the interpreter | |
| 1320 // the following holds -> | |
| 1321 // | |
| 1322 // Arguments: | |
| 1323 // | |
| 1324 // rbx,: methodOop | |
| 1325 // rcx: receiver | |
| 1326 // | |
| 1327 // | |
| 1328 // Stack layout immediately at entry | |
| 1329 // | |
| 1330 // [ return address ] <--- rsp | |
| 1331 // [ parameter n ] | |
| 1332 // ... | |
| 1333 // [ parameter 1 ] | |
| 1334 // [ expression stack ] (caller's java expression stack) | |
| 1335 | |
| 1336 // Assuming that we don't go to one of the trivial specialized | |
| 1337 // entries the stack will look like below when we are ready to execute | |
| 1338 // the first bytecode (or call the native routine). The register usage | |
| 1339 // will be as the template based interpreter expects (see interpreter_x86.hpp). | |
| 1340 // | |
| 1341 // local variables follow incoming parameters immediately; i.e. | |
| 1342 // the return address is moved to the end of the locals). | |
| 1343 // | |
| 1344 // [ monitor entry ] <--- rsp | |
| 1345 // ... | |
| 1346 // [ monitor entry ] | |
| 1347 // [ expr. stack bottom ] | |
| 1348 // [ saved rsi ] | |
| 1349 // [ current rdi ] | |
| 1350 // [ methodOop ] | |
| 1351 // [ saved rbp, ] <--- rbp, | |
| 1352 // [ return address ] | |
| 1353 // [ local variable m ] | |
| 1354 // ... | |
| 1355 // [ local variable 1 ] | |
| 1356 // [ parameter n ] | |
| 1357 // ... | |
| 1358 // [ parameter 1 ] <--- rdi | |
| 1359 | |
| 1360 address AbstractInterpreterGenerator::generate_method_entry(AbstractInterpreter::MethodKind kind) { | |
| 1361 // determine code generation flags | |
| 1362 bool synchronized = false; | |
| 1363 address entry_point = NULL; | |
| 1364 | |
| 1365 switch (kind) { | |
| 1366 case Interpreter::zerolocals : break; | |
| 1367 case Interpreter::zerolocals_synchronized: synchronized = true; break; | |
| 1368 case Interpreter::native : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(false); break; | |
| 1369 case Interpreter::native_synchronized : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(true); break; | |
| 1370 case Interpreter::empty : entry_point = ((InterpreterGenerator*)this)->generate_empty_entry(); break; | |
| 1371 case Interpreter::accessor : entry_point = ((InterpreterGenerator*)this)->generate_accessor_entry(); break; | |
| 1372 case Interpreter::abstract : entry_point = ((InterpreterGenerator*)this)->generate_abstract_entry(); break; | |
| 1373 | |
| 1374 case Interpreter::java_lang_math_sin : // fall thru | |
| 1375 case Interpreter::java_lang_math_cos : // fall thru | |
| 1376 case Interpreter::java_lang_math_tan : // fall thru | |
| 1377 case Interpreter::java_lang_math_abs : // fall thru | |
| 1378 case Interpreter::java_lang_math_log : // fall thru | |
| 1379 case Interpreter::java_lang_math_log10 : // fall thru | |
| 1380 case Interpreter::java_lang_math_sqrt : entry_point = ((InterpreterGenerator*)this)->generate_math_entry(kind); break; | |
| 1381 default : ShouldNotReachHere(); break; | |
| 1382 } | |
| 1383 | |
| 1384 if (entry_point) return entry_point; | |
| 1385 | |
| 1386 return ((InterpreterGenerator*)this)->generate_normal_entry(synchronized); | |
| 1387 | |
| 1388 } | |
| 1389 | |
| 1390 // How much stack a method activation needs in words. | |
| 1391 int AbstractInterpreter::size_top_interpreter_activation(methodOop method) { | |
| 1392 | |
| 1393 const int stub_code = 4; // see generate_call_stub | |
| 1394 // Save space for one monitor to get into the interpreted method in case | |
| 1395 // the method is synchronized | |
| 1396 int monitor_size = method->is_synchronized() ? | |
| 1397 1*frame::interpreter_frame_monitor_size() : 0; | |
| 1398 | |
| 1399 // total overhead size: entry_size + (saved rbp, thru expr stack bottom). | |
| 1400 // be sure to change this if you add/subtract anything to/from the overhead area | |
| 1401 const int overhead_size = -frame::interpreter_frame_initial_sp_offset; | |
| 1402 | |
| 1403 const int method_stack = (method->max_locals() + method->max_stack()) * | |
| 1404 Interpreter::stackElementWords(); | |
| 1405 return overhead_size + method_stack + stub_code; | |
| 1406 } | |
| 1407 | |
| 1408 // asm based interpreter deoptimization helpers | |
| 1409 | |
| 1410 int AbstractInterpreter::layout_activation(methodOop method, | |
| 1411 int tempcount, | |
| 1412 int popframe_extra_args, | |
| 1413 int moncount, | |
| 1414 int callee_param_count, | |
| 1415 int callee_locals, | |
| 1416 frame* caller, | |
| 1417 frame* interpreter_frame, | |
| 1418 bool is_top_frame) { | |
| 1419 // Note: This calculation must exactly parallel the frame setup | |
| 1420 // in AbstractInterpreterGenerator::generate_method_entry. | |
| 1421 // If interpreter_frame!=NULL, set up the method, locals, and monitors. | |
| 1422 // The frame interpreter_frame, if not NULL, is guaranteed to be the right size, | |
| 1423 // as determined by a previous call to this method. | |
| 1424 // It is also guaranteed to be walkable even though it is in a skeletal state | |
| 1425 // NOTE: return size is in words not bytes | |
| 1426 | |
| 1427 // fixed size of an interpreter frame: | |
| 1428 int max_locals = method->max_locals() * Interpreter::stackElementWords(); | |
| 1429 int extra_locals = (method->max_locals() - method->size_of_parameters()) * | |
| 1430 Interpreter::stackElementWords(); | |
| 1431 | |
| 1432 int overhead = frame::sender_sp_offset - frame::interpreter_frame_initial_sp_offset; | |
| 1433 | |
| 1434 // Our locals were accounted for by the caller (or last_frame_adjust on the transistion) | |
| 1435 // Since the callee parameters already account for the callee's params we only need to account for | |
| 1436 // the extra locals. | |
| 1437 | |
| 1438 | |
| 1439 int size = overhead + | |
| 1440 ((callee_locals - callee_param_count)*Interpreter::stackElementWords()) + | |
| 1441 (moncount*frame::interpreter_frame_monitor_size()) + | |
| 1442 tempcount*Interpreter::stackElementWords() + popframe_extra_args; | |
| 1443 | |
| 1444 if (interpreter_frame != NULL) { | |
| 1445 #ifdef ASSERT | |
| 1446 assert(caller->unextended_sp() == interpreter_frame->interpreter_frame_sender_sp(), "Frame not properly walkable"); | |
| 1447 assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable(2)"); | |
| 1448 #endif | |
| 1449 | |
| 1450 interpreter_frame->interpreter_frame_set_method(method); | |
| 1451 // NOTE the difference in using sender_sp and interpreter_frame_sender_sp | |
| 1452 // interpreter_frame_sender_sp is the original sp of the caller (the unextended_sp) | |
| 1453 // and sender_sp is fp+8 | |
| 1454 intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; | |
| 1455 | |
| 1456 interpreter_frame->interpreter_frame_set_locals(locals); | |
| 1457 BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin(); | |
| 1458 BasicObjectLock* monbot = montop - moncount; | |
| 1459 interpreter_frame->interpreter_frame_set_monitor_end(monbot); | |
| 1460 | |
| 1461 // Set last_sp | |
| 1462 intptr_t* rsp = (intptr_t*) monbot - | |
| 1463 tempcount*Interpreter::stackElementWords() - | |
| 1464 popframe_extra_args; | |
| 1465 interpreter_frame->interpreter_frame_set_last_sp(rsp); | |
| 1466 | |
| 1467 // All frames but the initial (oldest) interpreter frame we fill in have a | |
| 1468 // value for sender_sp that allows walking the stack but isn't | |
| 1469 // truly correct. Correct the value here. | |
| 1470 | |
| 1471 if (extra_locals != 0 && | |
| 1472 interpreter_frame->sender_sp() == interpreter_frame->interpreter_frame_sender_sp() ) { | |
| 1473 interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() + extra_locals); | |
| 1474 } | |
| 1475 *interpreter_frame->interpreter_frame_cache_addr() = | |
| 1476 method->constants()->cache(); | |
| 1477 } | |
| 1478 return size; | |
| 1479 } | |
| 1480 | |
| 1481 | |
| 1482 //------------------------------------------------------------------------------------------------------------------------ | |
| 1483 // Exceptions | |
| 1484 | |
| 1485 void TemplateInterpreterGenerator::generate_throw_exception() { | |
| 1486 // Entry point in previous activation (i.e., if the caller was interpreted) | |
| 1487 Interpreter::_rethrow_exception_entry = __ pc(); | |
| 1488 | |
| 1489 // Restore sp to interpreter_frame_last_sp even though we are going | |
| 1490 // to empty the expression stack for the exception processing. | |
|
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1491 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
| 0 | 1492 // rax,: exception |
| 1493 // rdx: return address/pc that threw exception | |
| 1494 __ restore_bcp(); // rsi points to call/send | |
| 1495 __ restore_locals(); | |
| 1496 | |
| 1497 // Entry point for exceptions thrown within interpreter code | |
| 1498 Interpreter::_throw_exception_entry = __ pc(); | |
| 1499 // expression stack is undefined here | |
| 1500 // rax,: exception | |
| 1501 // rsi: exception bcp | |
| 1502 __ verify_oop(rax); | |
| 1503 | |
| 1504 // expression stack must be empty before entering the VM in case of an exception | |
| 1505 __ empty_expression_stack(); | |
| 1506 __ empty_FPU_stack(); | |
| 1507 // find exception handler address and preserve exception oop | |
| 1508 __ call_VM(rdx, CAST_FROM_FN_PTR(address, InterpreterRuntime::exception_handler_for_exception), rax); | |
| 1509 // rax,: exception handler entry point | |
| 1510 // rdx: preserved exception oop | |
| 1511 // rsi: bcp for exception handler | |
| 1512 __ push_ptr(rdx); // push exception which is now the only value on the stack | |
| 1513 __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) | |
| 1514 | |
| 1515 // If the exception is not handled in the current frame the frame is removed and | |
| 1516 // the exception is rethrown (i.e. exception continuation is _rethrow_exception). | |
| 1517 // | |
| 1518 // Note: At this point the bci is still the bxi for the instruction which caused | |
| 1519 // the exception and the expression stack is empty. Thus, for any VM calls | |
| 1520 // at this point, GC will find a legal oop map (with empty expression stack). | |
| 1521 | |
| 1522 // In current activation | |
| 1523 // tos: exception | |
| 1524 // rsi: exception bcp | |
| 1525 | |
| 1526 // | |
| 1527 // JVMTI PopFrame support | |
| 1528 // | |
| 1529 | |
| 1530 Interpreter::_remove_activation_preserving_args_entry = __ pc(); | |
| 1531 __ empty_expression_stack(); | |
| 1532 __ empty_FPU_stack(); | |
| 1533 // Set the popframe_processing bit in pending_popframe_condition indicating that we are | |
| 1534 // currently handling popframe, so that call_VMs that may happen later do not trigger new | |
| 1535 // popframe handling cycles. | |
| 1536 __ get_thread(rcx); | |
| 1537 __ movl(rdx, Address(rcx, JavaThread::popframe_condition_offset())); | |
| 1538 __ orl(rdx, JavaThread::popframe_processing_bit); | |
| 1539 __ movl(Address(rcx, JavaThread::popframe_condition_offset()), rdx); | |
| 1540 | |
| 1541 { | |
| 1542 // Check to see whether we are returning to a deoptimized frame. | |
| 1543 // (The PopFrame call ensures that the caller of the popped frame is | |
| 1544 // either interpreted or compiled and deoptimizes it if compiled.) | |
| 1545 // In this case, we can't call dispatch_next() after the frame is | |
| 1546 // popped, but instead must save the incoming arguments and restore | |
| 1547 // them after deoptimization has occurred. | |
| 1548 // | |
| 1549 // Note that we don't compare the return PC against the | |
| 1550 // deoptimization blob's unpack entry because of the presence of | |
| 1551 // adapter frames in C2. | |
| 1552 Label caller_not_deoptimized; | |
| 304 | 1553 __ movptr(rdx, Address(rbp, frame::return_addr_offset * wordSize)); |
| 0 | 1554 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::interpreter_contains), rdx); |
| 1555 __ testl(rax, rax); | |
| 1556 __ jcc(Assembler::notZero, caller_not_deoptimized); | |
| 1557 | |
| 1558 // Compute size of arguments for saving when returning to deoptimized caller | |
| 1559 __ get_method(rax); | |
| 1560 __ verify_oop(rax); | |
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1561 __ load_unsigned_short(rax, Address(rax, in_bytes(methodOopDesc::size_of_parameters_offset()))); |
| 304 | 1562 __ shlptr(rax, Interpreter::logStackElementSize()); |
| 0 | 1563 __ restore_locals(); |
| 304 | 1564 __ subptr(rdi, rax); |
| 1565 __ addptr(rdi, wordSize); | |
| 0 | 1566 // Save these arguments |
| 1567 __ get_thread(rcx); | |
| 1568 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, Deoptimization::popframe_preserve_args), rcx, rax, rdi); | |
| 1569 | |
| 1570 __ remove_activation(vtos, rdx, | |
| 1571 /* throw_monitor_exception */ false, | |
| 1572 /* install_monitor_exception */ false, | |
| 1573 /* notify_jvmdi */ false); | |
| 1574 | |
| 1575 // Inform deoptimization that it is responsible for restoring these arguments | |
| 1576 __ get_thread(rcx); | |
| 1577 __ movl(Address(rcx, JavaThread::popframe_condition_offset()), JavaThread::popframe_force_deopt_reexecution_bit); | |
| 1578 | |
| 1579 // Continue in deoptimization handler | |
| 1580 __ jmp(rdx); | |
| 1581 | |
| 1582 __ bind(caller_not_deoptimized); | |
| 1583 } | |
| 1584 | |
| 1585 __ remove_activation(vtos, rdx, | |
| 1586 /* throw_monitor_exception */ false, | |
| 1587 /* install_monitor_exception */ false, | |
| 1588 /* notify_jvmdi */ false); | |
| 1589 | |
| 1590 // Finish with popframe handling | |
| 1591 // A previous I2C followed by a deoptimization might have moved the | |
| 1592 // outgoing arguments further up the stack. PopFrame expects the | |
| 1593 // mutations to those outgoing arguments to be preserved and other | |
| 1594 // constraints basically require this frame to look exactly as | |
| 1595 // though it had previously invoked an interpreted activation with | |
| 1596 // no space between the top of the expression stack (current | |
| 1597 // last_sp) and the top of stack. Rather than force deopt to | |
| 1598 // maintain this kind of invariant all the time we call a small | |
| 1599 // fixup routine to move the mutated arguments onto the top of our | |
| 1600 // expression stack if necessary. | |
| 304 | 1601 __ mov(rax, rsp); |
| 1602 __ movptr(rbx, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); | |
| 0 | 1603 __ get_thread(rcx); |
| 1604 // PC must point into interpreter here | |
| 1605 __ set_last_Java_frame(rcx, noreg, rbp, __ pc()); | |
| 1606 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), rcx, rax, rbx); | |
| 1607 __ get_thread(rcx); | |
| 1608 __ reset_last_Java_frame(rcx, true, true); | |
| 1609 // Restore the last_sp and null it out | |
| 304 | 1610 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
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1611 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
| 0 | 1612 |
| 1613 __ restore_bcp(); | |
| 1614 __ restore_locals(); | |
| 1615 // The method data pointer was incremented already during | |
| 1616 // call profiling. We have to restore the mdp for the current bcp. | |
| 1617 if (ProfileInterpreter) { | |
| 1618 __ set_method_data_pointer_for_bcp(); | |
| 1619 } | |
| 1620 | |
| 1621 // Clear the popframe condition flag | |
| 1622 __ get_thread(rcx); | |
| 1623 __ movl(Address(rcx, JavaThread::popframe_condition_offset()), JavaThread::popframe_inactive); | |
| 1624 | |
| 1625 __ dispatch_next(vtos); | |
| 1626 // end of PopFrame support | |
| 1627 | |
| 1628 Interpreter::_remove_activation_entry = __ pc(); | |
| 1629 | |
| 1630 // preserve exception over this code sequence | |
| 1631 __ pop_ptr(rax); | |
| 1632 __ get_thread(rcx); | |
| 304 | 1633 __ movptr(Address(rcx, JavaThread::vm_result_offset()), rax); |
| 0 | 1634 // remove the activation (without doing throws on illegalMonitorExceptions) |
| 1635 __ remove_activation(vtos, rdx, false, true, false); | |
| 1636 // restore exception | |
| 1637 __ get_thread(rcx); | |
| 304 | 1638 __ movptr(rax, Address(rcx, JavaThread::vm_result_offset())); |
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1639 __ movptr(Address(rcx, JavaThread::vm_result_offset()), NULL_WORD); |
| 0 | 1640 __ verify_oop(rax); |
| 1641 | |
| 1642 // Inbetween activations - previous activation type unknown yet | |
| 1643 // compute continuation point - the continuation point expects | |
| 1644 // the following registers set up: | |
| 1645 // | |
| 1646 // rax,: exception | |
| 1647 // rdx: return address/pc that threw exception | |
| 1648 // rsp: expression stack of caller | |
| 1649 // rbp,: rbp, of caller | |
| 304 | 1650 __ push(rax); // save exception |
| 1651 __ push(rdx); // save return address | |
| 0 | 1652 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), rdx); |
| 304 | 1653 __ mov(rbx, rax); // save exception handler |
| 1654 __ pop(rdx); // restore return address | |
| 1655 __ pop(rax); // restore exception | |
| 0 | 1656 // Note that an "issuing PC" is actually the next PC after the call |
| 1657 __ jmp(rbx); // jump to exception handler of caller | |
| 1658 } | |
| 1659 | |
| 1660 | |
| 1661 // | |
| 1662 // JVMTI ForceEarlyReturn support | |
| 1663 // | |
| 1664 address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { | |
| 1665 address entry = __ pc(); | |
| 1666 | |
| 1667 __ restore_bcp(); | |
| 1668 __ restore_locals(); | |
| 1669 __ empty_expression_stack(); | |
| 1670 __ empty_FPU_stack(); | |
| 1671 __ load_earlyret_value(state); | |
| 1672 | |
| 1673 __ get_thread(rcx); | |
| 304 | 1674 __ movptr(rcx, Address(rcx, JavaThread::jvmti_thread_state_offset())); |
| 0 | 1675 const Address cond_addr(rcx, JvmtiThreadState::earlyret_state_offset()); |
| 1676 | |
| 1677 // Clear the earlyret state | |
| 1678 __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); | |
| 1679 | |
| 1680 __ remove_activation(state, rsi, | |
| 1681 false, /* throw_monitor_exception */ | |
| 1682 false, /* install_monitor_exception */ | |
| 1683 true); /* notify_jvmdi */ | |
| 1684 __ jmp(rsi); | |
| 1685 return entry; | |
| 1686 } // end of ForceEarlyReturn support | |
| 1687 | |
| 1688 | |
| 1689 //------------------------------------------------------------------------------------------------------------------------ | |
| 1690 // Helper for vtos entry point generation | |
| 1691 | |
| 1692 void TemplateInterpreterGenerator::set_vtos_entry_points (Template* t, address& bep, address& cep, address& sep, address& aep, address& iep, address& lep, address& fep, address& dep, address& vep) { | |
| 1693 assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); | |
| 1694 Label L; | |
| 1695 fep = __ pc(); __ push(ftos); __ jmp(L); | |
| 1696 dep = __ pc(); __ push(dtos); __ jmp(L); | |
| 1697 lep = __ pc(); __ push(ltos); __ jmp(L); | |
| 1698 aep = __ pc(); __ push(atos); __ jmp(L); | |
| 1699 bep = cep = sep = // fall through | |
| 1700 iep = __ pc(); __ push(itos); // fall through | |
| 1701 vep = __ pc(); __ bind(L); // fall through | |
| 1702 generate_and_dispatch(t); | |
| 1703 } | |
| 1704 | |
| 1705 //------------------------------------------------------------------------------------------------------------------------ | |
| 1706 // Generation of individual instructions | |
| 1707 | |
| 1708 // helpers for generate_and_dispatch | |
| 1709 | |
| 1710 | |
| 1711 | |
| 1712 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
| 1713 : TemplateInterpreterGenerator(code) { | |
| 1714 generate_all(); // down here so it can be "virtual" | |
| 1715 } | |
| 1716 | |
| 1717 //------------------------------------------------------------------------------------------------------------------------ | |
| 1718 | |
| 1719 // Non-product code | |
| 1720 #ifndef PRODUCT | |
| 1721 address TemplateInterpreterGenerator::generate_trace_code(TosState state) { | |
| 1722 address entry = __ pc(); | |
| 1723 | |
| 1724 // prepare expression stack | |
| 304 | 1725 __ pop(rcx); // pop return address so expression stack is 'pure' |
| 0 | 1726 __ push(state); // save tosca |
| 1727 | |
| 1728 // pass tosca registers as arguments & call tracer | |
| 1729 __ call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), rcx, rax, rdx); | |
| 304 | 1730 __ mov(rcx, rax); // make sure return address is not destroyed by pop(state) |
| 0 | 1731 __ pop(state); // restore tosca |
| 1732 | |
| 1733 // return | |
| 1734 __ jmp(rcx); | |
| 1735 | |
| 1736 return entry; | |
| 1737 } | |
| 1738 | |
| 1739 | |
| 1740 void TemplateInterpreterGenerator::count_bytecode() { | |
| 304 | 1741 __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); |
| 0 | 1742 } |
| 1743 | |
| 1744 | |
| 1745 void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { | |
| 304 | 1746 __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); |
| 0 | 1747 } |
| 1748 | |
| 1749 | |
| 1750 void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { | |
| 1751 __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); | |
| 1752 __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); | |
| 1753 __ orl(rbx, ((int)t->bytecode()) << BytecodePairHistogram::log2_number_of_codes); | |
| 1754 ExternalAddress table((address) BytecodePairHistogram::_counters); | |
| 1755 Address index(noreg, rbx, Address::times_4); | |
| 304 | 1756 __ incrementl(ArrayAddress(table, index)); |
| 0 | 1757 } |
| 1758 | |
| 1759 | |
| 1760 void TemplateInterpreterGenerator::trace_bytecode(Template* t) { | |
| 1761 // Call a little run-time stub to avoid blow-up for each bytecode. | |
| 1762 // The run-time runtime saves the right registers, depending on | |
| 1763 // the tosca in-state for the given template. | |
| 1764 assert(Interpreter::trace_code(t->tos_in()) != NULL, | |
| 1765 "entry must have been generated"); | |
| 1766 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); | |
| 1767 } | |
| 1768 | |
| 1769 | |
| 1770 void TemplateInterpreterGenerator::stop_interpreter_at() { | |
| 1771 Label L; | |
| 1772 __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), | |
| 1773 StopInterpreterAt); | |
| 1774 __ jcc(Assembler::notEqual, L); | |
| 1775 __ int3(); | |
| 1776 __ bind(L); | |
| 1777 } | |
| 1778 #endif // !PRODUCT | |
| 1779 #endif // CC_INTERP |