templateInterpreterGenerator_x86.cpp revision 9867:3125c4a60cc9
195967Speter/* 2238405Sjkim * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved. 395967Speter * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4238405Sjkim * 5238405Sjkim * This code is free software; you can redistribute it and/or modify it 6238405Sjkim * under the terms of the GNU General Public License version 2 only, as 795967Speter * published by the Free Software Foundation. 8238405Sjkim * 995967Speter * This code is distributed in the hope that it will be useful, but WITHOUT 1095967Speter * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1195967Speter * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12238405Sjkim * version 2 for more details (a copy is included in the LICENSE file that 13238405Sjkim * accompanied this code). 1495967Speter * 1595967Speter * You should have received a copy of the GNU General Public License version 16127326Smarkm * 2 along with this work; if not, write to the Free Software Foundation, 17238405Sjkim * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18238405Sjkim * 19127326Smarkm * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20238405Sjkim * or visit www.oracle.com if you need additional information or have any 2195967Speter * questions. 22238405Sjkim * 23127326Smarkm */ 24238405Sjkim 25238405Sjkim#include "precompiled.hpp" 26238405Sjkim#include "asm/macroAssembler.hpp" 27238405Sjkim#include "interpreter/bytecodeHistogram.hpp" 28238405Sjkim#include "interpreter/interpreter.hpp" 29238405Sjkim#include "interpreter/interpreterGenerator.hpp" 30238405Sjkim#include "interpreter/interpreterRuntime.hpp" 31238405Sjkim#include "interpreter/interp_masm.hpp" 32238405Sjkim#include "interpreter/templateTable.hpp" 33238405Sjkim#include "oops/arrayOop.hpp" 34238405Sjkim#include "oops/methodData.hpp" 35238405Sjkim#include "oops/method.hpp" 3695967Speter#include "oops/oop.inline.hpp" 3795967Speter#include "prims/jvmtiExport.hpp" 38238405Sjkim#include "prims/jvmtiThreadState.hpp" 3995967Speter#include "runtime/arguments.hpp" 40238405Sjkim#include "runtime/deoptimization.hpp" 4195967Speter#include "runtime/frame.inline.hpp" 42238405Sjkim#include "runtime/sharedRuntime.hpp" 43238405Sjkim#include "runtime/stubRoutines.hpp" 44127326Smarkm#include "runtime/synchronizer.hpp" 45238405Sjkim#include "runtime/timer.hpp" 46238405Sjkim#include "runtime/vframeArray.hpp" 47238405Sjkim#include "utilities/debug.hpp" 48238405Sjkim#include "utilities/macros.hpp" 49238405Sjkim 50238405Sjkim#define __ _masm-> 51238405Sjkim 52238405Sjkim#ifndef CC_INTERP 53238405Sjkim 54238405Sjkim// Global Register Names 55238405Sjkimstatic const Register rbcp = LP64_ONLY(r13) NOT_LP64(rsi); 56238405Sjkimstatic const Register rlocals = LP64_ONLY(r14) NOT_LP64(rdi); 5795967Speter 5895967Speterconst int method_offset = frame::interpreter_frame_method_offset * wordSize; 59238405Sjkimconst int bcp_offset = frame::interpreter_frame_bcp_offset * wordSize; 6095967Speterconst int locals_offset = frame::interpreter_frame_locals_offset * wordSize; 61238405Sjkim 6295967Speter//----------------------------------------------------------------------------- 63238405Sjkim 64238405Sjkimaddress TemplateInterpreterGenerator::generate_StackOverflowError_handler() { 65127326Smarkm address entry = __ pc(); 66238405Sjkim 67238405Sjkim#ifdef ASSERT 68238405Sjkim { 69238405Sjkim Label L; 70238405Sjkim __ lea(rax, Address(rbp, 71238405Sjkim frame::interpreter_frame_monitor_block_top_offset * 72238405Sjkim wordSize)); 73238405Sjkim __ cmpptr(rax, rsp); // rax = maximal rsp for current rbp (stack 74238405Sjkim // grows negative) 75238405Sjkim __ jcc(Assembler::aboveEqual, L); // check if frame is complete 76238405Sjkim __ stop ("interpreter frame not set up"); 77238405Sjkim __ bind(L); 7895967Speter } 7995967Speter#endif // ASSERT 80238405Sjkim // Restore bcp under the assumption that the current frame is still 8195967Speter // interpreted 82238405Sjkim __ restore_bcp(); 8395967Speter 84238405Sjkim // expression stack must be empty before entering the VM if an 85238405Sjkim // exception happened 86127326Smarkm __ empty_expression_stack(); 87238405Sjkim // throw exception 88238405Sjkim __ call_VM(noreg, 89238405Sjkim CAST_FROM_FN_PTR(address, 90238405Sjkim InterpreterRuntime::throw_StackOverflowError)); 91238405Sjkim return entry; 92238405Sjkim} 93238405Sjkim 94238405Sjkimaddress TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler( 95238405Sjkim const char* name) { 96238405Sjkim address entry = __ pc(); 97238405Sjkim // expression stack must be empty before entering the VM if an 98238405Sjkim // exception happened 9995967Speter __ empty_expression_stack(); 10095967Speter // setup parameters 101238405Sjkim // ??? convention: expect aberrant index in register ebx 10295967Speter Register rarg = NOT_LP64(rax) LP64_ONLY(c_rarg1); 103238405Sjkim __ lea(rarg, ExternalAddress((address)name)); 10495967Speter __ call_VM(noreg, 105238405Sjkim CAST_FROM_FN_PTR(address, 106238405Sjkim InterpreterRuntime:: 107127326Smarkm throw_ArrayIndexOutOfBoundsException), 108238405Sjkim rarg, rbx); 109238405Sjkim return entry; 110238405Sjkim} 111238405Sjkim 112238405Sjkimaddress TemplateInterpreterGenerator::generate_ClassCastException_handler() { 113238405Sjkim address entry = __ pc(); 114238405Sjkim 115238405Sjkim // object is at TOS 116238405Sjkim Register rarg = NOT_LP64(rax) LP64_ONLY(c_rarg1); 117238405Sjkim __ pop(rarg); 118238405Sjkim 119238405Sjkim // expression stack must be empty before entering the VM if an 12095967Speter // exception happened 12195967Speter __ empty_expression_stack(); 122238405Sjkim 12395967Speter __ call_VM(noreg, 124238405Sjkim CAST_FROM_FN_PTR(address, 12595967Speter InterpreterRuntime:: 126238405Sjkim throw_ClassCastException), 127238405Sjkim rarg); 128127326Smarkm return entry; 129238405Sjkim} 130238405Sjkim 131238405Sjkimaddress TemplateInterpreterGenerator::generate_exception_handler_common( 132238405Sjkim const char* name, const char* message, bool pass_oop) { 133238405Sjkim assert(!pass_oop || message == NULL, "either oop or message but not both"); 134238405Sjkim address entry = __ pc(); 135238405Sjkim 136238405Sjkim Register rarg = NOT_LP64(rax) LP64_ONLY(c_rarg1); 137238405Sjkim Register rarg2 = NOT_LP64(rbx) LP64_ONLY(c_rarg2); 138238405Sjkim 139238405Sjkim if (pass_oop) { 140238405Sjkim // object is at TOS 14195967Speter __ pop(rarg2); 14295967Speter } 143238405Sjkim // expression stack must be empty before entering the VM if an 14495967Speter // exception happened 145238405Sjkim __ empty_expression_stack(); 14695967Speter // setup parameters 147238405Sjkim __ lea(rarg, ExternalAddress((address)name)); 148238405Sjkim if (pass_oop) { 149127326Smarkm __ call_VM(rax, CAST_FROM_FN_PTR(address, 150238405Sjkim InterpreterRuntime:: 151238405Sjkim create_klass_exception), 152238405Sjkim rarg, rarg2); 153238405Sjkim } else { 154238405Sjkim // kind of lame ExternalAddress can't take NULL because 155238405Sjkim // external_word_Relocation will assert. 156238405Sjkim if (message != NULL) { 157238405Sjkim __ lea(rarg2, ExternalAddress((address)message)); 158238405Sjkim } else { 159238405Sjkim __ movptr(rarg2, NULL_WORD); 160238405Sjkim } 161238405Sjkim __ call_VM(rax, 16295967Speter CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), 16395967Speter rarg, rarg2); 164238405Sjkim } 16595967Speter // throw exception 166238405Sjkim __ jump(ExternalAddress(Interpreter::throw_exception_entry())); 16795967Speter return entry; 168238405Sjkim} 169238405Sjkim 170127326Smarkm 171238405Sjkimaddress TemplateInterpreterGenerator::generate_continuation_for(TosState state) { 172238405Sjkim address entry = __ pc(); 173238405Sjkim // NULL last_sp until next java call 174238405Sjkim __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); 175238405Sjkim __ dispatch_next(state); 176238405Sjkim return entry; 177238405Sjkim} 178238405Sjkim 179238405Sjkim 180238405Sjkimaddress TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step, size_t index_size) { 181238405Sjkim address entry = __ pc(); 182238405Sjkim 18395967Speter#ifndef _LP64 18495967Speter#ifdef COMPILER2 185238405Sjkim // The FPU stack is clean if UseSSE >= 2 but must be cleaned in other cases 18695967Speter if ((state == ftos && UseSSE < 1) || (state == dtos && UseSSE < 2)) { 187238405Sjkim for (int i = 1; i < 8; i++) { 18895967Speter __ ffree(i); 189238405Sjkim } 190238405Sjkim } else if (UseSSE < 2) { 191127326Smarkm __ empty_FPU_stack(); 192238405Sjkim } 193238405Sjkim#endif // COMPILER2 194238405Sjkim if ((state == ftos && UseSSE < 1) || (state == dtos && UseSSE < 2)) { 195238405Sjkim __ MacroAssembler::verify_FPU(1, "generate_return_entry_for compiled"); 196238405Sjkim } else { 197238405Sjkim __ MacroAssembler::verify_FPU(0, "generate_return_entry_for compiled"); 198238405Sjkim } 199238405Sjkim 200238405Sjkim if (state == ftos) { 201238405Sjkim __ MacroAssembler::verify_FPU(UseSSE >= 1 ? 0 : 1, "generate_return_entry_for in interpreter"); 202238405Sjkim } else if (state == dtos) { 203238405Sjkim __ MacroAssembler::verify_FPU(UseSSE >= 2 ? 0 : 1, "generate_return_entry_for in interpreter"); 20495967Speter } 20595967Speter#endif // _LP64 206238405Sjkim 20795967Speter // Restore stack bottom in case i2c adjusted stack 208238405Sjkim __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); 20995967Speter // and NULL it as marker that esp is now tos until next java call 210238405Sjkim __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); 211238405Sjkim 212127326Smarkm __ restore_bcp(); 213238405Sjkim __ restore_locals(); 214238405Sjkim 215238405Sjkim if (state == atos) { 216238405Sjkim Register mdp = rbx; 217238405Sjkim Register tmp = rcx; 218238405Sjkim __ profile_return_type(mdp, rax, tmp); 219238405Sjkim } 220238405Sjkim 221238405Sjkim const Register cache = rbx; 222238405Sjkim const Register index = rcx; 223238405Sjkim __ get_cache_and_index_at_bcp(cache, index, 1, index_size); 224238405Sjkim 22595967Speter const Register flags = cache; 22695967Speter __ movl(flags, Address(cache, index, Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset())); 227238405Sjkim __ andl(flags, ConstantPoolCacheEntry::parameter_size_mask); 22895967Speter __ lea(rsp, Address(rsp, flags, Interpreter::stackElementScale())); 229238405Sjkim __ dispatch_next(state, step); 23095967Speter 231238405Sjkim return entry; 232238405Sjkim} 233127326Smarkm 234238405Sjkim 235238405Sjkimaddress TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, int step) { 236238405Sjkim address entry = __ pc(); 237238405Sjkim 238238405Sjkim#ifndef _LP64 239238405Sjkim if (state == ftos) { 240238405Sjkim __ MacroAssembler::verify_FPU(UseSSE >= 1 ? 0 : 1, "generate_deopt_entry_for in interpreter"); 241238405Sjkim } else if (state == dtos) { 242238405Sjkim __ MacroAssembler::verify_FPU(UseSSE >= 2 ? 0 : 1, "generate_deopt_entry_for in interpreter"); 243238405Sjkim } 244238405Sjkim#endif // _LP64 245238405Sjkim 24695967Speter // NULL last_sp until next java call 24795967Speter __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); 248238405Sjkim __ restore_bcp(); 24995967Speter __ restore_locals(); 250238405Sjkim const Register thread = NOT_LP64(rcx) LP64_ONLY(r15_thread); 25195967Speter NOT_LP64(__ get_thread(thread)); 252238405Sjkim#if INCLUDE_JVMCI 253238405Sjkim // Check if we need to take lock at entry of synchronized method. 254127326Smarkm if (UseJVMCICompiler) { 255238405Sjkim Label L; 256238405Sjkim __ cmpb(Address(thread, JavaThread::pending_monitorenter_offset()), 0); 257238405Sjkim __ jcc(Assembler::zero, L); 258238405Sjkim // Clear flag. 259238405Sjkim __ movb(Address(thread, JavaThread::pending_monitorenter_offset()), 0); 260238405Sjkim // Satisfy calling convention for lock_method(). 261238405Sjkim __ get_method(rbx); 262238405Sjkim // Take lock. 263238405Sjkim lock_method(); 264238405Sjkim __ bind(L); 265238405Sjkim } 266238405Sjkim#endif 26795967Speter // handle exceptions 26895967Speter { 269238405Sjkim Label L; 27095967Speter __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); 271238405Sjkim __ jcc(Assembler::zero, L); 27295967Speter __ call_VM(noreg, 273238405Sjkim CAST_FROM_FN_PTR(address, 274238405Sjkim InterpreterRuntime::throw_pending_exception)); 275127326Smarkm __ should_not_reach_here(); 27695967Speter __ bind(L); 277238405Sjkim } 27895967Speter __ dispatch_next(state, step); 279127326Smarkm return entry; 280238405Sjkim} 281238405Sjkim 282238405Sjkimaddress TemplateInterpreterGenerator::generate_result_handler_for( 283238405Sjkim BasicType type) { 284238405Sjkim address entry = __ pc(); 285238405Sjkim switch (type) { 286238405Sjkim case T_BOOLEAN: __ c2bool(rax); break; 287238405Sjkim#ifndef _LP64 288238405Sjkim case T_CHAR : __ andptr(rax, 0xFFFF); break; 289238405Sjkim#else 290238405Sjkim case T_CHAR : __ movzwl(rax, rax); break; 291238405Sjkim#endif // _LP64 29295967Speter case T_BYTE : __ sign_extend_byte(rax); break; 29395967Speter case T_SHORT : __ sign_extend_short(rax); break; 294238405Sjkim case T_INT : /* nothing to do */ break; 29595967Speter case T_LONG : /* nothing to do */ break; 296238405Sjkim case T_VOID : /* nothing to do */ break; 29795967Speter#ifndef _LP64 298238405Sjkim case T_DOUBLE : 299238405Sjkim case T_FLOAT : 300127326Smarkm { const Register t = InterpreterRuntime::SignatureHandlerGenerator::temp(); 301238405Sjkim __ pop(t); // remove return address first 302238405Sjkim // Must return a result for interpreter or compiler. In SSE 303238405Sjkim // mode, results are returned in xmm0 and the FPU stack must 304238405Sjkim // be empty. 305238405Sjkim if (type == T_FLOAT && UseSSE >= 1) { 306238405Sjkim // Load ST0 307238405Sjkim __ fld_d(Address(rsp, 0)); 308238405Sjkim // Store as float and empty fpu stack 309238405Sjkim __ fstp_s(Address(rsp, 0)); 310238405Sjkim // and reload 311238405Sjkim __ movflt(xmm0, Address(rsp, 0)); 312238405Sjkim } else if (type == T_DOUBLE && UseSSE >= 2 ) { 31395967Speter __ movdbl(xmm0, Address(rsp, 0)); 31495967Speter } else { 315238405Sjkim // restore ST0 31695967Speter __ fld_d(Address(rsp, 0)); 317238405Sjkim } 31895967Speter // and pop the temp 319238405Sjkim __ addptr(rsp, 2 * wordSize); 320238405Sjkim __ push(t); // restore return address 321127326Smarkm } 322238405Sjkim break; 323238405Sjkim#else 324238405Sjkim case T_FLOAT : /* nothing to do */ break; 325238405Sjkim case T_DOUBLE : /* nothing to do */ break; 326238405Sjkim#endif // _LP64 327238405Sjkim 328238405Sjkim case T_OBJECT : 329238405Sjkim // retrieve result from frame 330238405Sjkim __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize)); 331238405Sjkim // and verify it 332238405Sjkim __ verify_oop(rax); 333238405Sjkim break; 33495967Speter default : ShouldNotReachHere(); 33595967Speter } 336238405Sjkim __ ret(0); // return from result handler 33795967Speter return entry; 338238405Sjkim} 33995967Speter 340238405Sjkimaddress TemplateInterpreterGenerator::generate_safept_entry_for( 341238405Sjkim TosState state, 342127326Smarkm address runtime_entry) { 343238405Sjkim address entry = __ pc(); 344238405Sjkim __ push(state); 345238405Sjkim __ call_VM(noreg, runtime_entry); 346238405Sjkim __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos)); 347238405Sjkim return entry; 348238405Sjkim} 349238405Sjkim 350238405Sjkim 351238405Sjkim 352238405Sjkim// Helpers for commoning out cases in the various type of method entries. 353238405Sjkim// 354238405Sjkim 35595967Speter 35695967Speter// increment invocation count & check for overflow 357238405Sjkim// 35895967Speter// Note: checking for negative value instead of overflow 359238405Sjkim// so we have a 'sticky' overflow test 36095967Speter// 361238405Sjkim// rbx: method 362238405Sjkim// rcx: invocation counter 36395967Speter// 36495967Spetervoid InterpreterGenerator::generate_counter_incr( 365238405Sjkim Label* overflow, 366238405Sjkim Label* profile_method, 367238405Sjkim Label* profile_method_continue) { 36895967Speter Label done; 36995967Speter // Note: In tiered we increment either counters in Method* or in MDO depending if we're profiling or not. 37095967Speter if (TieredCompilation) { 37195967Speter int increment = InvocationCounter::count_increment; 37295967Speter Label no_mdo; 373238405Sjkim if (ProfileInterpreter) { 374238405Sjkim // Are we profiling? 375238405Sjkim __ movptr(rax, Address(rbx, Method::method_data_offset())); 376238405Sjkim __ testptr(rax, rax); 37795967Speter __ jccb(Assembler::zero, no_mdo); 378238405Sjkim // Increment counter in the MDO 37995967Speter const Address mdo_invocation_counter(rax, in_bytes(MethodData::invocation_counter_offset()) + 38095967Speter in_bytes(InvocationCounter::counter_offset())); 38195967Speter const Address mask(rax, in_bytes(MethodData::invoke_mask_offset())); 382238405Sjkim __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rcx, false, Assembler::zero, overflow); 383238405Sjkim __ jmp(done); 38495967Speter } 38595967Speter __ bind(no_mdo); 386127326Smarkm // Increment counter in MethodCounters 387238405Sjkim const Address invocation_counter(rax, 388238405Sjkim MethodCounters::invocation_counter_offset() + 389127326Smarkm InvocationCounter::counter_offset()); 390238405Sjkim __ get_method_counters(rbx, rax, done); 391238405Sjkim const Address mask(rax, in_bytes(MethodCounters::invoke_mask_offset())); 39295967Speter __ increment_mask_and_jump(invocation_counter, increment, mask, rcx, 393238405Sjkim false, Assembler::zero, overflow); 394127326Smarkm __ bind(done); 395238405Sjkim } else { // not TieredCompilation 396238405Sjkim const Address backedge_counter(rax, 397238405Sjkim MethodCounters::backedge_counter_offset() + 398238405Sjkim InvocationCounter::counter_offset()); 399238405Sjkim const Address invocation_counter(rax, 400238405Sjkim MethodCounters::invocation_counter_offset() + 401238405Sjkim InvocationCounter::counter_offset()); 402238405Sjkim 403238405Sjkim __ get_method_counters(rbx, rax, done); 404238405Sjkim 405238405Sjkim if (ProfileInterpreter) { 406238405Sjkim __ incrementl(Address(rax, 40795967Speter MethodCounters::interpreter_invocation_counter_offset())); 40895967Speter } 409238405Sjkim // Update standard invocation counters 41095967Speter __ movl(rcx, invocation_counter); 411238405Sjkim __ incrementl(rcx, InvocationCounter::count_increment); 41295967Speter __ movl(invocation_counter, rcx); // save invocation count 413238405Sjkim 414238405Sjkim __ movl(rax, backedge_counter); // load backedge counter 415127326Smarkm __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits 416238405Sjkim 417238405Sjkim __ addl(rcx, rax); // add both counters 418238405Sjkim 419238405Sjkim // profile_method is non-null only for interpreted method so 420238405Sjkim // profile_method != NULL == !native_call 421238405Sjkim 422238405Sjkim if (ProfileInterpreter && profile_method != NULL) { 423238405Sjkim // Test to see if we should create a method data oop 424238405Sjkim __ movptr(rax, Address(rbx, Method::method_counters_offset())); 425238405Sjkim __ cmp32(rcx, Address(rax, in_bytes(MethodCounters::interpreter_profile_limit_offset()))); 426238405Sjkim __ jcc(Assembler::less, *profile_method_continue); 427238405Sjkim 42895967Speter // if no method data exists, go to profile_method 42995967Speter __ test_method_data_pointer(rax, *profile_method); 430238405Sjkim } 43195967Speter 432238405Sjkim __ movptr(rax, Address(rbx, Method::method_counters_offset())); 43395967Speter __ cmp32(rcx, Address(rax, in_bytes(MethodCounters::interpreter_invocation_limit_offset()))); 434238405Sjkim __ jcc(Assembler::aboveEqual, *overflow); 435238405Sjkim __ bind(done); 436127326Smarkm } 437238405Sjkim} 438238405Sjkim 439238405Sjkimvoid InterpreterGenerator::generate_counter_overflow(Label* do_continue) { 440238405Sjkim 441238405Sjkim // Asm interpreter on entry 442238405Sjkim // r14/rdi - locals 443238405Sjkim // r13/rsi - bcp 444238405Sjkim // rbx - method 445238405Sjkim // rdx - cpool --- DOES NOT APPEAR TO BE TRUE 446238405Sjkim // rbp - interpreter frame 447238405Sjkim 448238405Sjkim // On return (i.e. jump to entry_point) [ back to invocation of interpreter ] 44995967Speter // Everything as it was on entry 45095967Speter // rdx is not restored. Doesn't appear to really be set. 451238405Sjkim 45295967Speter // InterpreterRuntime::frequency_counter_overflow takes two 453238405Sjkim // arguments, the first (thread) is passed by call_VM, the second 45495967Speter // indicates if the counter overflow occurs at a backwards branch 455238405Sjkim // (NULL bcp). We pass zero for it. The call returns the address 456238405Sjkim // of the verified entry point for the method or NULL if the 457127326Smarkm // compilation did not complete (either went background or bailed 458238405Sjkim // out). 459238405Sjkim Register rarg = NOT_LP64(rax) LP64_ONLY(c_rarg1); 460238405Sjkim __ movl(rarg, 0); 461238405Sjkim __ call_VM(noreg, 462238405Sjkim CAST_FROM_FN_PTR(address, 463238405Sjkim InterpreterRuntime::frequency_counter_overflow), 464238405Sjkim rarg); 465238405Sjkim 466238405Sjkim __ movptr(rbx, Address(rbp, method_offset)); // restore Method* 467238405Sjkim // Preserve invariant that r13/r14 contain bcp/locals of sender frame 468238405Sjkim // and jump to the interpreted entry. 469238405Sjkim __ jmp(*do_continue, relocInfo::none); 47095967Speter} 47195967Speter 472238405Sjkim// See if we've got enough room on the stack for locals plus overhead. 47395967Speter// The expression stack grows down incrementally, so the normal guard 474238405Sjkim// page mechanism will work for that. 47595967Speter// 476238405Sjkim// NOTE: Since the additional locals are also always pushed (wasn't 477238405Sjkim// obvious in generate_fixed_frame) so the guard should work for them 47895967Speter// too. 479127326Smarkm// 480238405Sjkim// Args: 481238405Sjkim// rdx: number of additional locals this frame needs (what we must check) 482238405Sjkim// rbx: Method* 483238405Sjkim// 484238405Sjkim// Kills: 485238405Sjkim// rax 486238405Sjkimvoid InterpreterGenerator::generate_stack_overflow_check(void) { 487238405Sjkim 488238405Sjkim // monitor entry size: see picture of stack in frame_x86.hpp 489238405Sjkim const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; 490238405Sjkim 491238405Sjkim // total overhead size: entry_size + (saved rbp through expr stack 49295967Speter // bottom). be sure to change this if you add/subtract anything 49395967Speter // to/from the overhead area 494238405Sjkim const int overhead_size = 49595967Speter -(frame::interpreter_frame_initial_sp_offset * wordSize) + entry_size; 496238405Sjkim 49795967Speter const int page_size = os::vm_page_size(); 498238405Sjkim 499238405Sjkim Label after_frame_check; 500127326Smarkm 501238405Sjkim // see if the frame is greater than one page in size. If so, 502238405Sjkim // then we need to verify there is enough stack space remaining 503238405Sjkim // for the additional locals. 504238405Sjkim __ cmpl(rdx, (page_size - overhead_size) / Interpreter::stackElementSize); 505238405Sjkim __ jcc(Assembler::belowEqual, after_frame_check); 506238405Sjkim 507238405Sjkim // compute rsp as if this were going to be the last frame on 508238405Sjkim // the stack before the red zone 509238405Sjkim 510238405Sjkim Label after_frame_check_pop; 511238405Sjkim const Register thread = NOT_LP64(rsi) LP64_ONLY(r15_thread); 512238405Sjkim#ifndef _LP64 51395967Speter __ push(thread); 51495967Speter __ get_thread(thread); 515238405Sjkim#endif 51695967Speter 517238405Sjkim const Address stack_base(thread, Thread::stack_base_offset()); 51895967Speter const Address stack_size(thread, Thread::stack_size_offset()); 519238405Sjkim 520238405Sjkim // locals + overhead, in bytes 521127326Smarkm __ mov(rax, rdx); 522238405Sjkim __ shlptr(rax, Interpreter::logStackElementSize); // 2 slots per parameter. 523238405Sjkim __ addptr(rax, overhead_size); 524238405Sjkim 525238405Sjkim#ifdef ASSERT 526238405Sjkim Label stack_base_okay, stack_size_okay; 527238405Sjkim // verify that thread stack base is non-zero 528238405Sjkim __ cmpptr(stack_base, (int32_t)NULL_WORD); 529238405Sjkim __ jcc(Assembler::notEqual, stack_base_okay); 530238405Sjkim __ stop("stack base is zero"); 531238405Sjkim __ bind(stack_base_okay); 532238405Sjkim // verify that thread stack size is non-zero 533238405Sjkim __ cmpptr(stack_size, 0); 53495967Speter __ jcc(Assembler::notEqual, stack_size_okay); 53595967Speter __ stop("stack size is zero"); 536238405Sjkim __ bind(stack_size_okay); 53795967Speter#endif 538238405Sjkim 53995967Speter // Add stack base to locals and subtract stack size 540238405Sjkim __ addptr(rax, stack_base); 541238405Sjkim __ subptr(rax, stack_size); 542127326Smarkm 543238405Sjkim // Use the bigger size for banging. 544238405Sjkim const int max_bang_size = (int)MAX2(JavaThread::stack_shadow_zone_size(), 545238405Sjkim JavaThread::stack_guard_zone_size()); 546238405Sjkim 547238405Sjkim // add in the red and yellow zone sizes 548238405Sjkim __ addptr(rax, max_bang_size); 549238405Sjkim 550238405Sjkim // check against the current stack bottom 551238405Sjkim __ cmpptr(rsp, rax); 552238405Sjkim 553238405Sjkim __ jcc(Assembler::above, after_frame_check_pop); 554238405Sjkim NOT_LP64(__ pop(rsi)); // get saved bcp 55595967Speter 55695967Speter // Restore sender's sp as SP. This is necessary if the sender's 557238405Sjkim // frame is an extended compiled frame (see gen_c2i_adapter()) 55895967Speter // and safer anyway in case of JSR292 adaptations. 559238405Sjkim 56095967Speter __ pop(rax); // return address must be moved if SP is changed 561238405Sjkim __ mov(rsp, rbcp); 562238405Sjkim __ push(rax); 563127326Smarkm 564238405Sjkim // Note: the restored frame is not necessarily interpreted. 565238405Sjkim // Use the shared runtime version of the StackOverflowError. 566238405Sjkim assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated"); 567238405Sjkim __ jump(ExternalAddress(StubRoutines::throw_StackOverflowError_entry())); 568238405Sjkim // all done with frame size check 569238405Sjkim __ bind(after_frame_check_pop); 570238405Sjkim NOT_LP64(__ pop(rsi)); 571238405Sjkim 572238405Sjkim // all done with frame size check 573238405Sjkim __ bind(after_frame_check); 574238405Sjkim} 575238405Sjkim 57695967Speter// Allocate monitor and lock method (asm interpreter) 57795967Speter// 578238405Sjkim// Args: 57995967Speter// rbx: Method* 580238405Sjkim// r14/rdi: locals 58195967Speter// 582238405Sjkim// Kills: 583238405Sjkim// rax 584127326Smarkm// c_rarg0, c_rarg1, c_rarg2, c_rarg3, ...(param regs) 585238405Sjkim// rscratch1, rscratch2 (scratch regs) 586238405Sjkimvoid TemplateInterpreterGenerator::lock_method() { 587238405Sjkim // synchronize method 588238405Sjkim const Address access_flags(rbx, Method::access_flags_offset()); 589238405Sjkim const Address monitor_block_top( 590238405Sjkim rbp, 591238405Sjkim frame::interpreter_frame_monitor_block_top_offset * wordSize); 592238405Sjkim const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; 593238405Sjkim 594238405Sjkim#ifdef ASSERT 595238405Sjkim { 596238405Sjkim Label L; 59795967Speter __ movl(rax, access_flags); 59895967Speter __ testl(rax, JVM_ACC_SYNCHRONIZED); 599238405Sjkim __ jcc(Assembler::notZero, L); 60095967Speter __ stop("method doesn't need synchronization"); 601238405Sjkim __ bind(L); 60295967Speter } 603238405Sjkim#endif // ASSERT 604238405Sjkim 605127326Smarkm // get synchronization object 606238405Sjkim { 607238405Sjkim const int mirror_offset = in_bytes(Klass::java_mirror_offset()); 608238405Sjkim Label done; 609238405Sjkim __ movl(rax, access_flags); 610238405Sjkim __ testl(rax, JVM_ACC_STATIC); 611238405Sjkim // get receiver (assume this is frequent case) 612238405Sjkim __ movptr(rax, Address(rlocals, Interpreter::local_offset_in_bytes(0))); 613238405Sjkim __ jcc(Assembler::zero, done); 614238405Sjkim __ movptr(rax, Address(rbx, Method::const_offset())); 615238405Sjkim __ movptr(rax, Address(rax, ConstMethod::constants_offset())); 616238405Sjkim __ movptr(rax, Address(rax, 617238405Sjkim ConstantPool::pool_holder_offset_in_bytes())); 61895967Speter __ movptr(rax, Address(rax, mirror_offset)); 61995967Speter 620238405Sjkim#ifdef ASSERT 62195967Speter { 622238405Sjkim Label L; 62395967Speter __ testptr(rax, rax); 624238405Sjkim __ jcc(Assembler::notZero, L); 625238405Sjkim __ stop("synchronization object is NULL"); 626127326Smarkm __ bind(L); 627238405Sjkim } 628238405Sjkim#endif // ASSERT 629238405Sjkim 630238405Sjkim __ bind(done); 631238405Sjkim } 632238405Sjkim 633238405Sjkim // add space for monitor & lock 634238405Sjkim __ subptr(rsp, entry_size); // add space for a monitor entry 635238405Sjkim __ movptr(monitor_block_top, rsp); // set new monitor block top 636238405Sjkim // store object 637238405Sjkim __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); 638238405Sjkim const Register lockreg = NOT_LP64(rdx) LP64_ONLY(c_rarg1); 63995967Speter __ movptr(lockreg, rsp); // object address 64095967Speter __ lock_object(lockreg); 641238405Sjkim} 64295967Speter 643238405Sjkim// Generate a fixed interpreter frame. This is identical setup for 64495967Speter// interpreted methods and for native methods hence the shared code. 645238405Sjkim// 646238405Sjkim// Args: 647127326Smarkm// rax: return address 648238405Sjkim// rbx: Method* 649238405Sjkim// r14/rdi: pointer to locals 650238405Sjkim// r13/rsi: sender sp 651238405Sjkim// rdx: cp cache 652238405Sjkimvoid TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { 653238405Sjkim // initialize fixed part of activation frame 654238405Sjkim __ push(rax); // save return address 655238405Sjkim __ enter(); // save old & set new rbp 656238405Sjkim __ push(rbcp); // set sender sp 657238405Sjkim __ push((int)NULL_WORD); // leave last_sp as null 658238405Sjkim __ movptr(rbcp, Address(rbx, Method::const_offset())); // get ConstMethod* 659238405Sjkim __ lea(rbcp, Address(rbcp, ConstMethod::codes_offset())); // get codebase 66095967Speter __ push(rbx); // save Method* 66195967Speter if (ProfileInterpreter) { 662238405Sjkim Label method_data_continue; 66395967Speter __ movptr(rdx, Address(rbx, in_bytes(Method::method_data_offset()))); 664238405Sjkim __ testptr(rdx, rdx); 66595967Speter __ jcc(Assembler::zero, method_data_continue); 666238405Sjkim __ addptr(rdx, in_bytes(MethodData::data_offset())); 667238405Sjkim __ bind(method_data_continue); 668127326Smarkm __ push(rdx); // set the mdp (method data pointer) 669238405Sjkim } else { 670238405Sjkim __ push(0); 671238405Sjkim } 672238405Sjkim 673238405Sjkim __ movptr(rdx, Address(rbx, Method::const_offset())); 674238405Sjkim __ movptr(rdx, Address(rdx, ConstMethod::constants_offset())); 675238405Sjkim __ movptr(rdx, Address(rdx, ConstantPool::cache_offset_in_bytes())); 676238405Sjkim __ push(rdx); // set constant pool cache 677238405Sjkim __ push(rlocals); // set locals pointer 678238405Sjkim if (native_call) { 679238405Sjkim __ push(0); // no bcp 680238405Sjkim } else { 68195967Speter __ push(rbcp); // set bcp 68295967Speter } 683238405Sjkim __ push(0); // reserve word for pointer to expression stack bottom 68495967Speter __ movptr(Address(rsp, 0), rsp); // set expression stack bottom 685238405Sjkim} 68695967Speter 687238405Sjkim// End of helpers 688238405Sjkim 689127326Smarkm// Method entry for java.lang.ref.Reference.get. 690238405Sjkimaddress InterpreterGenerator::generate_Reference_get_entry(void) { 691238405Sjkim#if INCLUDE_ALL_GCS 692238405Sjkim // Code: _aload_0, _getfield, _areturn 693238405Sjkim // parameter size = 1 694238405Sjkim // 695238405Sjkim // The code that gets generated by this routine is split into 2 parts: 696238405Sjkim // 1. The "intrinsified" code for G1 (or any SATB based GC), 697238405Sjkim // 2. The slow path - which is an expansion of the regular method entry. 698238405Sjkim // 699238405Sjkim // Notes:- 700238405Sjkim // * In the G1 code we do not check whether we need to block for 701238405Sjkim // a safepoint. If G1 is enabled then we must execute the specialized 70295967Speter // code for Reference.get (except when the Reference object is null) 70395967Speter // so that we can log the value in the referent field with an SATB 704238405Sjkim // update buffer. 70595967Speter // If the code for the getfield template is modified so that the 706238405Sjkim // G1 pre-barrier code is executed when the current method is 70795967Speter // Reference.get() then going through the normal method entry 708238405Sjkim // will be fine. 709238405Sjkim // * The G1 code can, however, check the receiver object (the instance 710127326Smarkm // of java.lang.Reference) and jump to the slow path if null. If the 711238405Sjkim // Reference object is null then we obviously cannot fetch the referent 712238405Sjkim // and so we don't need to call the G1 pre-barrier. Thus we can use the 713238405Sjkim // regular method entry code to generate the NPE. 714238405Sjkim // 715238405Sjkim // rbx: Method* 716238405Sjkim 717238405Sjkim // r13: senderSP must preserve for slow path, set SP to it on fast path 718238405Sjkim 719238405Sjkim address entry = __ pc(); 720238405Sjkim 721238405Sjkim const int referent_offset = java_lang_ref_Reference::referent_offset; 722238405Sjkim guarantee(referent_offset > 0, "referent offset not initialized"); 72395967Speter 72495967Speter if (UseG1GC) { 725238405Sjkim Label slow_path; 72695967Speter // rbx: method 727238405Sjkim 72895967Speter // Check if local 0 != NULL 729238405Sjkim // If the receiver is null then it is OK to jump to the slow path. 730238405Sjkim __ movptr(rax, Address(rsp, wordSize)); 73195967Speter 732238405Sjkim __ testptr(rax, rax); 733238405Sjkim __ jcc(Assembler::zero, slow_path); 734238405Sjkim 73595967Speter // rax: local 0 73695967Speter // rbx: method (but can be used as scratch now) 73795967Speter // rdx: scratch 73895967Speter // rdi: scratch 73995967Speter 740238405Sjkim // Preserve the sender sp in case the pre-barrier 741238405Sjkim // calls the runtime 742238405Sjkim NOT_LP64(__ push(rsi)); 743238405Sjkim 74495967Speter // Generate the G1 pre-barrier code to log the value of 745238405Sjkim // the referent field in an SATB buffer. 74695967Speter 74795967Speter // Load the value of the referent field. 74895967Speter const Address field_address(rax, referent_offset); 74995967Speter __ load_heap_oop(rax, field_address); 75095967Speter 751238405Sjkim const Register sender_sp = NOT_LP64(rsi) LP64_ONLY(r13); 752127326Smarkm const Register thread = NOT_LP64(rcx) LP64_ONLY(r15_thread); 753238405Sjkim NOT_LP64(__ get_thread(thread)); 754238405Sjkim 755238405Sjkim // Generate the G1 pre-barrier code to log the value of 75695967Speter // the referent field in an SATB buffer. 75795967Speter __ g1_write_barrier_pre(noreg /* obj */, 75895967Speter rax /* pre_val */, 75995967Speter thread /* thread */, 760238405Sjkim rbx /* tmp */, 761238405Sjkim true /* tosca_live */, 762238405Sjkim true /* expand_call */); 763127326Smarkm 764238405Sjkim // _areturn 765127326Smarkm NOT_LP64(__ pop(rsi)); // get sender sp 766238405Sjkim __ pop(rdi); // get return address 76795967Speter __ mov(rsp, sender_sp); // set sp to sender sp 76895967Speter __ jmp(rdi); 769238405Sjkim __ ret(0); 77095967Speter 771238405Sjkim // generate a vanilla interpreter entry as the slow path 772238405Sjkim __ bind(slow_path); 773238405Sjkim __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::zerolocals)); 77495967Speter return entry; 77595967Speter } 776238405Sjkim#endif // INCLUDE_ALL_GCS 777238405Sjkim 778238405Sjkim // If G1 is not enabled then attempt to go through the accessor entry point 779238405Sjkim // Reference.get is an accessor 780238405Sjkim return NULL; 781238405Sjkim} 782238405Sjkim 783238405Sjkim// Interpreter stub for calling a native method. (asm interpreter) 784238405Sjkim// This sets up a somewhat different looking stack for calling the 785238405Sjkim// native method than the typical interpreter frame setup. 786238405Sjkimaddress InterpreterGenerator::generate_native_entry(bool synchronized) { 787238405Sjkim // determine code generation flags 788238405Sjkim bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods; 789238405Sjkim 790238405Sjkim // rbx: Method* 791238405Sjkim // rbcp: sender sp 792238405Sjkim 793238405Sjkim address entry_point = __ pc(); 79495967Speter 79595967Speter const Address constMethod (rbx, Method::const_offset()); 796238405Sjkim const Address access_flags (rbx, Method::access_flags_offset()); 797238405Sjkim const Address size_of_parameters(rcx, ConstMethod:: 79895967Speter size_of_parameters_offset()); 799127326Smarkm 800127326Smarkm 801127326Smarkm // get parameter size (always needed) 802127326Smarkm __ movptr(rcx, constMethod); 803238405Sjkim __ load_unsigned_short(rcx, size_of_parameters); 804238405Sjkim 805238405Sjkim // native calls don't need the stack size check since they have no 806238405Sjkim // expression stack and the arguments are already on the stack and 80795967Speter // we only add a handful of words to the stack 808127326Smarkm 809238405Sjkim // rbx: Method* 810238405Sjkim // rcx: size of parameters 811127326Smarkm // rbcp: sender sp 812238405Sjkim __ pop(rax); // get return address 813127326Smarkm 814238405Sjkim // for natives the size of locals is zero 815127326Smarkm 816238405Sjkim // compute beginning of parameters 817127326Smarkm __ lea(rlocals, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize)); 818127326Smarkm 819238405Sjkim // add 2 zero-initialized slots for native calls 820238405Sjkim // initialize result_handler slot 821127326Smarkm __ push((int) NULL_WORD); 822238405Sjkim // slot for oop temp 823127326Smarkm // (static native method holder mirror/jni oop result) 824238405Sjkim __ push((int) NULL_WORD); 825127326Smarkm 826238405Sjkim // initialize fixed part of activation frame 827238405Sjkim generate_fixed_frame(true); 828238405Sjkim 829238405Sjkim // make sure method is native & not abstract 830238405Sjkim#ifdef ASSERT 831238405Sjkim __ movl(rax, access_flags); 832238405Sjkim { 833238405Sjkim Label L; 834238405Sjkim __ testl(rax, JVM_ACC_NATIVE); 835238405Sjkim __ jcc(Assembler::notZero, L); 836238405Sjkim __ stop("tried to execute non-native method as native"); 837238405Sjkim __ bind(L); 838238405Sjkim } 83995967Speter { 84095967Speter Label L; 841238405Sjkim __ testl(rax, JVM_ACC_ABSTRACT); 842238405Sjkim __ jcc(Assembler::zero, L); 843238405Sjkim __ stop("tried to execute abstract method in interpreter"); 844127326Smarkm __ bind(L); 845127326Smarkm } 846238405Sjkim#endif 847238405Sjkim 848238405Sjkim // Since at this point in the method invocation the exception handler 849238405Sjkim // would try to exit the monitor of synchronized methods which hasn't 850238405Sjkim // been entered yet, we set the thread local variable 851238405Sjkim // _do_not_unlock_if_synchronized to true. The remove_activation will 852238405Sjkim // check this flag. 853238405Sjkim 854238405Sjkim const Register thread1 = NOT_LP64(rax) LP64_ONLY(r15_thread); 855238405Sjkim NOT_LP64(__ get_thread(thread1)); 856238405Sjkim const Address do_not_unlock_if_synchronized(thread1, 857238405Sjkim in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); 858238405Sjkim __ movbool(do_not_unlock_if_synchronized, true); 859238405Sjkim 860238405Sjkim // increment invocation count & check for overflow 861238405Sjkim Label invocation_counter_overflow; 862238405Sjkim if (inc_counter) { 863238405Sjkim generate_counter_incr(&invocation_counter_overflow, NULL, NULL); 864238405Sjkim } 865238405Sjkim 866238405Sjkim Label continue_after_compile; 867238405Sjkim __ bind(continue_after_compile); 868238405Sjkim 869238405Sjkim bang_stack_shadow_pages(true); 870127326Smarkm 871127326Smarkm // reset the _do_not_unlock_if_synchronized flag 872238405Sjkim NOT_LP64(__ get_thread(thread1)); 873238405Sjkim __ movbool(do_not_unlock_if_synchronized, false); 87495967Speter 875238405Sjkim // check for synchronized methods 876238405Sjkim // Must happen AFTER invocation_counter check and stack overflow check, 877238405Sjkim // so method is not locked if overflows. 878238405Sjkim if (synchronized) { 879238405Sjkim lock_method(); 880238405Sjkim } else { 881238405Sjkim // no synchronization necessary 882238405Sjkim#ifdef ASSERT 883238405Sjkim { 884238405Sjkim Label L; 885238405Sjkim __ movl(rax, access_flags); 886238405Sjkim __ testl(rax, JVM_ACC_SYNCHRONIZED); 887238405Sjkim __ jcc(Assembler::zero, L); 888238405Sjkim __ stop("method needs synchronization"); 889238405Sjkim __ bind(L); 890238405Sjkim } 891238405Sjkim#endif 892127326Smarkm } 893238405Sjkim 894238405Sjkim // start execution 895238405Sjkim#ifdef ASSERT 896127326Smarkm { 897238405Sjkim Label L; 898127326Smarkm const Address monitor_block_top(rbp, 899238405Sjkim frame::interpreter_frame_monitor_block_top_offset * wordSize); 900127326Smarkm __ movptr(rax, monitor_block_top); 901238405Sjkim __ cmpptr(rax, rsp); 902127326Smarkm __ jcc(Assembler::equal, L); 903127326Smarkm __ stop("broken stack frame setup in interpreter"); 904238405Sjkim __ bind(L); 905238405Sjkim } 906238405Sjkim#endif 907127326Smarkm 908238405Sjkim // jvmti support 909127326Smarkm __ notify_method_entry(); 910238405Sjkim 911127326Smarkm // work registers 91295967Speter const Register method = rbx; 91395967Speter const Register thread = NOT_LP64(rdi) LP64_ONLY(r15_thread); 914238405Sjkim const Register t = NOT_LP64(rcx) LP64_ONLY(r11); 915238405Sjkim 916238405Sjkim // allocate space for parameters 917238405Sjkim __ get_method(method); 91895967Speter __ movptr(t, Address(method, Method::const_offset())); 91995967Speter __ load_unsigned_short(t, Address(t, ConstMethod::size_of_parameters_offset())); 92095967Speter 92195967Speter#ifndef _LP64 92295967Speter __ shlptr(t, Interpreter::logStackElementSize); 923238405Sjkim __ addptr(t, 2*wordSize); // allocate two more slots for JNIEnv and possible mirror 924127326Smarkm __ subptr(rsp, t); 925238405Sjkim __ andptr(rsp, -(StackAlignmentInBytes)); // gcc needs 16 byte aligned stacks to do XMM intrinsics 926238405Sjkim#else 927238405Sjkim __ shll(t, Interpreter::logStackElementSize); 928238405Sjkim 929238405Sjkim __ subptr(rsp, t); 930238405Sjkim __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows 931238405Sjkim __ andptr(rsp, -16); // must be 16 byte boundary (see amd64 ABI) 932238405Sjkim#endif // _LP64 933238405Sjkim 934238405Sjkim // get signature handler 935 { 936 Label L; 937 __ movptr(t, Address(method, Method::signature_handler_offset())); 938 __ testptr(t, t); 939 __ jcc(Assembler::notZero, L); 940 __ call_VM(noreg, 941 CAST_FROM_FN_PTR(address, 942 InterpreterRuntime::prepare_native_call), 943 method); 944 __ get_method(method); 945 __ movptr(t, Address(method, Method::signature_handler_offset())); 946 __ bind(L); 947 } 948 949 // call signature handler 950 assert(InterpreterRuntime::SignatureHandlerGenerator::from() == rlocals, 951 "adjust this code"); 952 assert(InterpreterRuntime::SignatureHandlerGenerator::to() == rsp, 953 "adjust this code"); 954 assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == NOT_LP64(t) LP64_ONLY(rscratch1), 955 "adjust this code"); 956 957 // The generated handlers do not touch RBX (the method oop). 958 // However, large signatures cannot be cached and are generated 959 // each time here. The slow-path generator can do a GC on return, 960 // so we must reload it after the call. 961 __ call(t); 962 __ get_method(method); // slow path can do a GC, reload RBX 963 964 965 // result handler is in rax 966 // set result handler 967 __ movptr(Address(rbp, 968 (frame::interpreter_frame_result_handler_offset) * wordSize), 969 rax); 970 971 // pass mirror handle if static call 972 { 973 Label L; 974 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); 975 __ movl(t, Address(method, Method::access_flags_offset())); 976 __ testl(t, JVM_ACC_STATIC); 977 __ jcc(Assembler::zero, L); 978 // get mirror 979 __ movptr(t, Address(method, Method::const_offset())); 980 __ movptr(t, Address(t, ConstMethod::constants_offset())); 981 __ movptr(t, Address(t, ConstantPool::pool_holder_offset_in_bytes())); 982 __ movptr(t, Address(t, mirror_offset)); 983 // copy mirror into activation frame 984 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), 985 t); 986 // pass handle to mirror 987#ifndef _LP64 988 __ lea(t, Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); 989 __ movptr(Address(rsp, wordSize), t); 990#else 991 __ lea(c_rarg1, 992 Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); 993#endif // _LP64 994 __ bind(L); 995 } 996 997 // get native function entry point 998 { 999 Label L; 1000 __ movptr(rax, Address(method, Method::native_function_offset())); 1001 ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); 1002 __ cmpptr(rax, unsatisfied.addr()); 1003 __ jcc(Assembler::notEqual, L); 1004 __ call_VM(noreg, 1005 CAST_FROM_FN_PTR(address, 1006 InterpreterRuntime::prepare_native_call), 1007 method); 1008 __ get_method(method); 1009 __ movptr(rax, Address(method, Method::native_function_offset())); 1010 __ bind(L); 1011 } 1012 1013 // pass JNIEnv 1014#ifndef _LP64 1015 __ get_thread(thread); 1016 __ lea(t, Address(thread, JavaThread::jni_environment_offset())); 1017 __ movptr(Address(rsp, 0), t); 1018 1019 // set_last_Java_frame_before_call 1020 // It is enough that the pc() 1021 // points into the right code segment. It does not have to be the correct return pc. 1022 __ set_last_Java_frame(thread, noreg, rbp, __ pc()); 1023#else 1024 __ lea(c_rarg0, Address(r15_thread, JavaThread::jni_environment_offset())); 1025 1026 // It is enough that the pc() points into the right code 1027 // segment. It does not have to be the correct return pc. 1028 __ set_last_Java_frame(rsp, rbp, (address) __ pc()); 1029#endif // _LP64 1030 1031 // change thread state 1032#ifdef ASSERT 1033 { 1034 Label L; 1035 __ movl(t, Address(thread, JavaThread::thread_state_offset())); 1036 __ cmpl(t, _thread_in_Java); 1037 __ jcc(Assembler::equal, L); 1038 __ stop("Wrong thread state in native stub"); 1039 __ bind(L); 1040 } 1041#endif 1042 1043 // Change state to native 1044 1045 __ movl(Address(thread, JavaThread::thread_state_offset()), 1046 _thread_in_native); 1047 1048 // Call the native method. 1049 __ call(rax); 1050 // 32: result potentially in rdx:rax or ST0 1051 // 64: result potentially in rax or xmm0 1052 1053 // Verify or restore cpu control state after JNI call 1054 __ restore_cpu_control_state_after_jni(); 1055 1056 // NOTE: The order of these pushes is known to frame::interpreter_frame_result 1057 // in order to extract the result of a method call. If the order of these 1058 // pushes change or anything else is added to the stack then the code in 1059 // interpreter_frame_result must also change. 1060 1061#ifndef _LP64 1062 // save potential result in ST(0) & rdx:rax 1063 // (if result handler is the T_FLOAT or T_DOUBLE handler, result must be in ST0 - 1064 // the check is necessary to avoid potential Intel FPU overflow problems by saving/restoring 'empty' FPU registers) 1065 // It is safe to do this push because state is _thread_in_native and return address will be found 1066 // via _last_native_pc and not via _last_jave_sp 1067 1068 // NOTE: the order of theses push(es) is known to frame::interpreter_frame_result. 1069 // If the order changes or anything else is added to the stack the code in 1070 // interpreter_frame_result will have to be changed. 1071 1072 { Label L; 1073 Label push_double; 1074 ExternalAddress float_handler(AbstractInterpreter::result_handler(T_FLOAT)); 1075 ExternalAddress double_handler(AbstractInterpreter::result_handler(T_DOUBLE)); 1076 __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), 1077 float_handler.addr()); 1078 __ jcc(Assembler::equal, push_double); 1079 __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), 1080 double_handler.addr()); 1081 __ jcc(Assembler::notEqual, L); 1082 __ bind(push_double); 1083 __ push_d(); // FP values are returned using the FPU, so push FPU contents (even if UseSSE > 0). 1084 __ bind(L); 1085 } 1086#else 1087 __ push(dtos); 1088#endif // _LP64 1089 1090 __ push(ltos); 1091 1092 // change thread state 1093 NOT_LP64(__ get_thread(thread)); 1094 __ movl(Address(thread, JavaThread::thread_state_offset()), 1095 _thread_in_native_trans); 1096 1097 if (os::is_MP()) { 1098 if (UseMembar) { 1099 // Force this write out before the read below 1100 __ membar(Assembler::Membar_mask_bits( 1101 Assembler::LoadLoad | Assembler::LoadStore | 1102 Assembler::StoreLoad | Assembler::StoreStore)); 1103 } else { 1104 // Write serialization page so VM thread can do a pseudo remote membar. 1105 // We use the current thread pointer to calculate a thread specific 1106 // offset to write to within the page. This minimizes bus traffic 1107 // due to cache line collision. 1108 __ serialize_memory(thread, rcx); 1109 } 1110 } 1111 1112#ifndef _LP64 1113 if (AlwaysRestoreFPU) { 1114 // Make sure the control word is correct. 1115 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); 1116 } 1117#endif // _LP64 1118 1119 // check for safepoint operation in progress and/or pending suspend requests 1120 { 1121 Label Continue; 1122 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), 1123 SafepointSynchronize::_not_synchronized); 1124 1125 Label L; 1126 __ jcc(Assembler::notEqual, L); 1127 __ cmpl(Address(thread, JavaThread::suspend_flags_offset()), 0); 1128 __ jcc(Assembler::equal, Continue); 1129 __ bind(L); 1130 1131 // Don't use call_VM as it will see a possible pending exception 1132 // and forward it and never return here preventing us from 1133 // clearing _last_native_pc down below. Also can't use 1134 // call_VM_leaf either as it will check to see if r13 & r14 are 1135 // preserved and correspond to the bcp/locals pointers. So we do a 1136 // runtime call by hand. 1137 // 1138#ifndef _LP64 1139 __ push(thread); 1140 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, 1141 JavaThread::check_special_condition_for_native_trans))); 1142 __ increment(rsp, wordSize); 1143 __ get_thread(thread); 1144#else 1145 __ mov(c_rarg0, r15_thread); 1146 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) 1147 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows 1148 __ andptr(rsp, -16); // align stack as required by ABI 1149 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans))); 1150 __ mov(rsp, r12); // restore sp 1151 __ reinit_heapbase(); 1152#endif // _LP64 1153 __ bind(Continue); 1154 } 1155 1156 // change thread state 1157 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_Java); 1158 1159 // reset_last_Java_frame 1160 __ reset_last_Java_frame(thread, true, true); 1161 1162 // reset handle block 1163 __ movptr(t, Address(thread, JavaThread::active_handles_offset())); 1164 __ movl(Address(t, JNIHandleBlock::top_offset_in_bytes()), (int32_t)NULL_WORD); 1165 1166 // If result is an oop unbox and store it in frame where gc will see it 1167 // and result handler will pick it up 1168 1169 { 1170 Label no_oop, store_result; 1171 __ lea(t, ExternalAddress(AbstractInterpreter::result_handler(T_OBJECT))); 1172 __ cmpptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); 1173 __ jcc(Assembler::notEqual, no_oop); 1174 // retrieve result 1175 __ pop(ltos); 1176 __ testptr(rax, rax); 1177 __ jcc(Assembler::zero, store_result); 1178 __ movptr(rax, Address(rax, 0)); 1179 __ bind(store_result); 1180 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize), rax); 1181 // keep stack depth as expected by pushing oop which will eventually be discarded 1182 __ push(ltos); 1183 __ bind(no_oop); 1184 } 1185 1186 1187 { 1188 Label no_reguard; 1189 __ cmpl(Address(thread, JavaThread::stack_guard_state_offset()), 1190 JavaThread::stack_guard_yellow_reserved_disabled); 1191 __ jcc(Assembler::notEqual, no_reguard); 1192 1193 __ pusha(); // XXX only save smashed registers 1194#ifndef _LP64 1195 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); 1196 __ popa(); 1197#else 1198 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) 1199 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows 1200 __ andptr(rsp, -16); // align stack as required by ABI 1201 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); 1202 __ mov(rsp, r12); // restore sp 1203 __ popa(); // XXX only restore smashed registers 1204 __ reinit_heapbase(); 1205#endif // _LP64 1206 1207 __ bind(no_reguard); 1208 } 1209 1210 1211 // The method register is junk from after the thread_in_native transition 1212 // until here. Also can't call_VM until the bcp has been 1213 // restored. Need bcp for throwing exception below so get it now. 1214 __ get_method(method); 1215 1216 // restore to have legal interpreter frame, i.e., bci == 0 <=> code_base() 1217 __ movptr(rbcp, Address(method, Method::const_offset())); // get ConstMethod* 1218 __ lea(rbcp, Address(rbcp, ConstMethod::codes_offset())); // get codebase 1219 1220 // handle exceptions (exception handling will handle unlocking!) 1221 { 1222 Label L; 1223 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD); 1224 __ jcc(Assembler::zero, L); 1225 // Note: At some point we may want to unify this with the code 1226 // used in call_VM_base(); i.e., we should use the 1227 // StubRoutines::forward_exception code. For now this doesn't work 1228 // here because the rsp is not correctly set at this point. 1229 __ MacroAssembler::call_VM(noreg, 1230 CAST_FROM_FN_PTR(address, 1231 InterpreterRuntime::throw_pending_exception)); 1232 __ should_not_reach_here(); 1233 __ bind(L); 1234 } 1235 1236 // do unlocking if necessary 1237 { 1238 Label L; 1239 __ movl(t, Address(method, Method::access_flags_offset())); 1240 __ testl(t, JVM_ACC_SYNCHRONIZED); 1241 __ jcc(Assembler::zero, L); 1242 // the code below should be shared with interpreter macro 1243 // assembler implementation 1244 { 1245 Label unlock; 1246 // BasicObjectLock will be first in list, since this is a 1247 // synchronized method. However, need to check that the object 1248 // has not been unlocked by an explicit monitorexit bytecode. 1249 const Address monitor(rbp, 1250 (intptr_t)(frame::interpreter_frame_initial_sp_offset * 1251 wordSize - (int)sizeof(BasicObjectLock))); 1252 1253 const Register regmon = NOT_LP64(rdx) LP64_ONLY(c_rarg1); 1254 1255 // monitor expect in c_rarg1 for slow unlock path 1256 __ lea(regmon, monitor); // address of first monitor 1257 1258 __ movptr(t, Address(regmon, BasicObjectLock::obj_offset_in_bytes())); 1259 __ testptr(t, t); 1260 __ jcc(Assembler::notZero, unlock); 1261 1262 // Entry already unlocked, need to throw exception 1263 __ MacroAssembler::call_VM(noreg, 1264 CAST_FROM_FN_PTR(address, 1265 InterpreterRuntime::throw_illegal_monitor_state_exception)); 1266 __ should_not_reach_here(); 1267 1268 __ bind(unlock); 1269 __ unlock_object(regmon); 1270 } 1271 __ bind(L); 1272 } 1273 1274 // jvmti support 1275 // Note: This must happen _after_ handling/throwing any exceptions since 1276 // the exception handler code notifies the runtime of method exits 1277 // too. If this happens before, method entry/exit notifications are 1278 // not properly paired (was bug - gri 11/22/99). 1279 __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); 1280 1281 // restore potential result in edx:eax, call result handler to 1282 // restore potential result in ST0 & handle result 1283 1284 __ pop(ltos); 1285 LP64_ONLY( __ pop(dtos)); 1286 1287 __ movptr(t, Address(rbp, 1288 (frame::interpreter_frame_result_handler_offset) * wordSize)); 1289 __ call(t); 1290 1291 // remove activation 1292 __ movptr(t, Address(rbp, 1293 frame::interpreter_frame_sender_sp_offset * 1294 wordSize)); // get sender sp 1295 __ leave(); // remove frame anchor 1296 __ pop(rdi); // get return address 1297 __ mov(rsp, t); // set sp to sender sp 1298 __ jmp(rdi); 1299 1300 if (inc_counter) { 1301 // Handle overflow of counter and compile method 1302 __ bind(invocation_counter_overflow); 1303 generate_counter_overflow(&continue_after_compile); 1304 } 1305 1306 return entry_point; 1307} 1308 1309// 1310// Generic interpreted method entry to (asm) interpreter 1311// 1312address InterpreterGenerator::generate_normal_entry(bool synchronized) { 1313 // determine code generation flags 1314 bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods; 1315 1316 // ebx: Method* 1317 // rbcp: sender sp 1318 address entry_point = __ pc(); 1319 1320 const Address constMethod(rbx, Method::const_offset()); 1321 const Address access_flags(rbx, Method::access_flags_offset()); 1322 const Address size_of_parameters(rdx, 1323 ConstMethod::size_of_parameters_offset()); 1324 const Address size_of_locals(rdx, ConstMethod::size_of_locals_offset()); 1325 1326 1327 // get parameter size (always needed) 1328 __ movptr(rdx, constMethod); 1329 __ load_unsigned_short(rcx, size_of_parameters); 1330 1331 // rbx: Method* 1332 // rcx: size of parameters 1333 // rbcp: sender_sp (could differ from sp+wordSize if we were called via c2i ) 1334 1335 __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words 1336 __ subl(rdx, rcx); // rdx = no. of additional locals 1337 1338 // YYY 1339// __ incrementl(rdx); 1340// __ andl(rdx, -2); 1341 1342 // see if we've got enough room on the stack for locals plus overhead. 1343 generate_stack_overflow_check(); 1344 1345 // get return address 1346 __ pop(rax); 1347 1348 // compute beginning of parameters 1349 __ lea(rlocals, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize)); 1350 1351 // rdx - # of additional locals 1352 // allocate space for locals 1353 // explicitly initialize locals 1354 { 1355 Label exit, loop; 1356 __ testl(rdx, rdx); 1357 __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0 1358 __ bind(loop); 1359 __ push((int) NULL_WORD); // initialize local variables 1360 __ decrementl(rdx); // until everything initialized 1361 __ jcc(Assembler::greater, loop); 1362 __ bind(exit); 1363 } 1364 1365 // initialize fixed part of activation frame 1366 generate_fixed_frame(false); 1367 1368 // make sure method is not native & not abstract 1369#ifdef ASSERT 1370 __ movl(rax, access_flags); 1371 { 1372 Label L; 1373 __ testl(rax, JVM_ACC_NATIVE); 1374 __ jcc(Assembler::zero, L); 1375 __ stop("tried to execute native method as non-native"); 1376 __ bind(L); 1377 } 1378 { 1379 Label L; 1380 __ testl(rax, JVM_ACC_ABSTRACT); 1381 __ jcc(Assembler::zero, L); 1382 __ stop("tried to execute abstract method in interpreter"); 1383 __ bind(L); 1384 } 1385#endif 1386 1387 // Since at this point in the method invocation the exception 1388 // handler would try to exit the monitor of synchronized methods 1389 // which hasn't been entered yet, we set the thread local variable 1390 // _do_not_unlock_if_synchronized to true. The remove_activation 1391 // will check this flag. 1392 1393 const Register thread = NOT_LP64(rax) LP64_ONLY(r15_thread); 1394 NOT_LP64(__ get_thread(thread)); 1395 const Address do_not_unlock_if_synchronized(thread, 1396 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); 1397 __ movbool(do_not_unlock_if_synchronized, true); 1398 1399 __ profile_parameters_type(rax, rcx, rdx); 1400 // increment invocation count & check for overflow 1401 Label invocation_counter_overflow; 1402 Label profile_method; 1403 Label profile_method_continue; 1404 if (inc_counter) { 1405 generate_counter_incr(&invocation_counter_overflow, 1406 &profile_method, 1407 &profile_method_continue); 1408 if (ProfileInterpreter) { 1409 __ bind(profile_method_continue); 1410 } 1411 } 1412 1413 Label continue_after_compile; 1414 __ bind(continue_after_compile); 1415 1416 // check for synchronized interpreted methods 1417 bang_stack_shadow_pages(false); 1418 1419 // reset the _do_not_unlock_if_synchronized flag 1420 NOT_LP64(__ get_thread(thread)); 1421 __ movbool(do_not_unlock_if_synchronized, false); 1422 1423 // check for synchronized methods 1424 // Must happen AFTER invocation_counter check and stack overflow check, 1425 // so method is not locked if overflows. 1426 if (synchronized) { 1427 // Allocate monitor and lock method 1428 lock_method(); 1429 } else { 1430 // no synchronization necessary 1431#ifdef ASSERT 1432 { 1433 Label L; 1434 __ movl(rax, access_flags); 1435 __ testl(rax, JVM_ACC_SYNCHRONIZED); 1436 __ jcc(Assembler::zero, L); 1437 __ stop("method needs synchronization"); 1438 __ bind(L); 1439 } 1440#endif 1441 } 1442 1443 // start execution 1444#ifdef ASSERT 1445 { 1446 Label L; 1447 const Address monitor_block_top (rbp, 1448 frame::interpreter_frame_monitor_block_top_offset * wordSize); 1449 __ movptr(rax, monitor_block_top); 1450 __ cmpptr(rax, rsp); 1451 __ jcc(Assembler::equal, L); 1452 __ stop("broken stack frame setup in interpreter"); 1453 __ bind(L); 1454 } 1455#endif 1456 1457 // jvmti support 1458 __ notify_method_entry(); 1459 1460 __ dispatch_next(vtos); 1461 1462 // invocation counter overflow 1463 if (inc_counter) { 1464 if (ProfileInterpreter) { 1465 // We have decided to profile this method in the interpreter 1466 __ bind(profile_method); 1467 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); 1468 __ set_method_data_pointer_for_bcp(); 1469 __ get_method(rbx); 1470 __ jmp(profile_method_continue); 1471 } 1472 // Handle overflow of counter and compile method 1473 __ bind(invocation_counter_overflow); 1474 generate_counter_overflow(&continue_after_compile); 1475 } 1476 1477 return entry_point; 1478} 1479 1480//----------------------------------------------------------------------------- 1481// Exceptions 1482 1483void TemplateInterpreterGenerator::generate_throw_exception() { 1484 // Entry point in previous activation (i.e., if the caller was 1485 // interpreted) 1486 Interpreter::_rethrow_exception_entry = __ pc(); 1487 // Restore sp to interpreter_frame_last_sp even though we are going 1488 // to empty the expression stack for the exception processing. 1489 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); 1490 // rax: exception 1491 // rdx: return address/pc that threw exception 1492 __ restore_bcp(); // r13/rsi points to call/send 1493 __ restore_locals(); 1494 LP64_ONLY(__ reinit_heapbase()); // restore r12 as heapbase. 1495 // Entry point for exceptions thrown within interpreter code 1496 Interpreter::_throw_exception_entry = __ pc(); 1497 // expression stack is undefined here 1498 // rax: exception 1499 // r13/rsi: exception bcp 1500 __ verify_oop(rax); 1501 Register rarg = NOT_LP64(rax) LP64_ONLY(c_rarg1); 1502 LP64_ONLY(__ mov(c_rarg1, rax)); 1503 1504 // expression stack must be empty before entering the VM in case of 1505 // an exception 1506 __ empty_expression_stack(); 1507 // find exception handler address and preserve exception oop 1508 __ call_VM(rdx, 1509 CAST_FROM_FN_PTR(address, 1510 InterpreterRuntime::exception_handler_for_exception), 1511 rarg); 1512 // rax: exception handler entry point 1513 // rdx: preserved exception oop 1514 // r13/rsi: bcp for exception handler 1515 __ push_ptr(rdx); // push exception which is now the only value on the stack 1516 __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) 1517 1518 // If the exception is not handled in the current frame the frame is 1519 // removed and the exception is rethrown (i.e. exception 1520 // continuation is _rethrow_exception). 1521 // 1522 // Note: At this point the bci is still the bxi for the instruction 1523 // which caused the exception and the expression stack is 1524 // empty. Thus, for any VM calls at this point, GC will find a legal 1525 // oop map (with empty expression stack). 1526 1527 // In current activation 1528 // tos: exception 1529 // esi: exception bcp 1530 1531 // 1532 // JVMTI PopFrame support 1533 // 1534 1535 Interpreter::_remove_activation_preserving_args_entry = __ pc(); 1536 __ empty_expression_stack(); 1537 // Set the popframe_processing bit in pending_popframe_condition 1538 // indicating that we are currently handling popframe, so that 1539 // call_VMs that may happen later do not trigger new popframe 1540 // handling cycles. 1541 const Register thread = NOT_LP64(rcx) LP64_ONLY(r15_thread); 1542 NOT_LP64(__ get_thread(thread)); 1543 __ movl(rdx, Address(thread, JavaThread::popframe_condition_offset())); 1544 __ orl(rdx, JavaThread::popframe_processing_bit); 1545 __ movl(Address(thread, JavaThread::popframe_condition_offset()), rdx); 1546 1547 { 1548 // Check to see whether we are returning to a deoptimized frame. 1549 // (The PopFrame call ensures that the caller of the popped frame is 1550 // either interpreted or compiled and deoptimizes it if compiled.) 1551 // In this case, we can't call dispatch_next() after the frame is 1552 // popped, but instead must save the incoming arguments and restore 1553 // them after deoptimization has occurred. 1554 // 1555 // Note that we don't compare the return PC against the 1556 // deoptimization blob's unpack entry because of the presence of 1557 // adapter frames in C2. 1558 Label caller_not_deoptimized; 1559 Register rarg = NOT_LP64(rdx) LP64_ONLY(c_rarg1); 1560 __ movptr(rarg, Address(rbp, frame::return_addr_offset * wordSize)); 1561 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, 1562 InterpreterRuntime::interpreter_contains), rarg); 1563 __ testl(rax, rax); 1564 __ jcc(Assembler::notZero, caller_not_deoptimized); 1565 1566 // Compute size of arguments for saving when returning to 1567 // deoptimized caller 1568 __ get_method(rax); 1569 __ movptr(rax, Address(rax, Method::const_offset())); 1570 __ load_unsigned_short(rax, Address(rax, in_bytes(ConstMethod:: 1571 size_of_parameters_offset()))); 1572 __ shll(rax, Interpreter::logStackElementSize); 1573 __ restore_locals(); 1574 __ subptr(rlocals, rax); 1575 __ addptr(rlocals, wordSize); 1576 // Save these arguments 1577 NOT_LP64(__ get_thread(thread)); 1578 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, 1579 Deoptimization:: 1580 popframe_preserve_args), 1581 thread, rax, rlocals); 1582 1583 __ remove_activation(vtos, rdx, 1584 /* throw_monitor_exception */ false, 1585 /* install_monitor_exception */ false, 1586 /* notify_jvmdi */ false); 1587 1588 // Inform deoptimization that it is responsible for restoring 1589 // these arguments 1590 NOT_LP64(__ get_thread(thread)); 1591 __ movl(Address(thread, JavaThread::popframe_condition_offset()), 1592 JavaThread::popframe_force_deopt_reexecution_bit); 1593 1594 // Continue in deoptimization handler 1595 __ jmp(rdx); 1596 1597 __ bind(caller_not_deoptimized); 1598 } 1599 1600 __ remove_activation(vtos, rdx, /* rdx result (retaddr) is not used */ 1601 /* throw_monitor_exception */ false, 1602 /* install_monitor_exception */ false, 1603 /* notify_jvmdi */ false); 1604 1605 // Finish with popframe handling 1606 // A previous I2C followed by a deoptimization might have moved the 1607 // outgoing arguments further up the stack. PopFrame expects the 1608 // mutations to those outgoing arguments to be preserved and other 1609 // constraints basically require this frame to look exactly as 1610 // though it had previously invoked an interpreted activation with 1611 // no space between the top of the expression stack (current 1612 // last_sp) and the top of stack. Rather than force deopt to 1613 // maintain this kind of invariant all the time we call a small 1614 // fixup routine to move the mutated arguments onto the top of our 1615 // expression stack if necessary. 1616#ifndef _LP64 1617 __ mov(rax, rsp); 1618 __ movptr(rbx, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); 1619 __ get_thread(thread); 1620 // PC must point into interpreter here 1621 __ set_last_Java_frame(thread, noreg, rbp, __ pc()); 1622 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), thread, rax, rbx); 1623 __ get_thread(thread); 1624#else 1625 __ mov(c_rarg1, rsp); 1626 __ movptr(c_rarg2, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); 1627 // PC must point into interpreter here 1628 __ set_last_Java_frame(noreg, rbp, __ pc()); 1629 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), r15_thread, c_rarg1, c_rarg2); 1630#endif 1631 __ reset_last_Java_frame(thread, true, true); 1632 1633 // Restore the last_sp and null it out 1634 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); 1635 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); 1636 1637 __ restore_bcp(); 1638 __ restore_locals(); 1639 // The method data pointer was incremented already during 1640 // call profiling. We have to restore the mdp for the current bcp. 1641 if (ProfileInterpreter) { 1642 __ set_method_data_pointer_for_bcp(); 1643 } 1644 1645 // Clear the popframe condition flag 1646 NOT_LP64(__ get_thread(thread)); 1647 __ movl(Address(thread, JavaThread::popframe_condition_offset()), 1648 JavaThread::popframe_inactive); 1649 1650#if INCLUDE_JVMTI 1651 { 1652 Label L_done; 1653 const Register local0 = rlocals; 1654 1655 __ cmpb(Address(rbcp, 0), Bytecodes::_invokestatic); 1656 __ jcc(Assembler::notEqual, L_done); 1657 1658 // The member name argument must be restored if _invokestatic is re-executed after a PopFrame call. 1659 // Detect such a case in the InterpreterRuntime function and return the member name argument, or NULL. 1660 1661 __ get_method(rdx); 1662 __ movptr(rax, Address(local0, 0)); 1663 __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::member_name_arg_or_null), rax, rdx, rbcp); 1664 1665 __ testptr(rax, rax); 1666 __ jcc(Assembler::zero, L_done); 1667 1668 __ movptr(Address(rbx, 0), rax); 1669 __ bind(L_done); 1670 } 1671#endif // INCLUDE_JVMTI 1672 1673 __ dispatch_next(vtos); 1674 // end of PopFrame support 1675 1676 Interpreter::_remove_activation_entry = __ pc(); 1677 1678 // preserve exception over this code sequence 1679 __ pop_ptr(rax); 1680 NOT_LP64(__ get_thread(thread)); 1681 __ movptr(Address(thread, JavaThread::vm_result_offset()), rax); 1682 // remove the activation (without doing throws on illegalMonitorExceptions) 1683 __ remove_activation(vtos, rdx, false, true, false); 1684 // restore exception 1685 NOT_LP64(__ get_thread(thread)); 1686 __ get_vm_result(rax, thread); 1687 1688 // In between activations - previous activation type unknown yet 1689 // compute continuation point - the continuation point expects the 1690 // following registers set up: 1691 // 1692 // rax: exception 1693 // rdx: return address/pc that threw exception 1694 // rsp: expression stack of caller 1695 // rbp: ebp of caller 1696 __ push(rax); // save exception 1697 __ push(rdx); // save return address 1698 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, 1699 SharedRuntime::exception_handler_for_return_address), 1700 thread, rdx); 1701 __ mov(rbx, rax); // save exception handler 1702 __ pop(rdx); // restore return address 1703 __ pop(rax); // restore exception 1704 // Note that an "issuing PC" is actually the next PC after the call 1705 __ jmp(rbx); // jump to exception 1706 // handler of caller 1707} 1708 1709 1710// 1711// JVMTI ForceEarlyReturn support 1712// 1713address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { 1714 address entry = __ pc(); 1715 1716 __ restore_bcp(); 1717 __ restore_locals(); 1718 __ empty_expression_stack(); 1719 __ load_earlyret_value(state); // 32 bits returns value in rdx, so don't reuse 1720 1721 const Register thread = NOT_LP64(rcx) LP64_ONLY(r15_thread); 1722 NOT_LP64(__ get_thread(thread)); 1723 __ movptr(rcx, Address(thread, JavaThread::jvmti_thread_state_offset())); 1724 Address cond_addr(rcx, JvmtiThreadState::earlyret_state_offset()); 1725 1726 // Clear the earlyret state 1727 __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); 1728 1729 __ remove_activation(state, rsi, 1730 false, /* throw_monitor_exception */ 1731 false, /* install_monitor_exception */ 1732 true); /* notify_jvmdi */ 1733 __ jmp(rsi); 1734 1735 return entry; 1736} // end of ForceEarlyReturn support 1737 1738 1739//----------------------------------------------------------------------------- 1740// Helper for vtos entry point generation 1741 1742void TemplateInterpreterGenerator::set_vtos_entry_points(Template* t, 1743 address& bep, 1744 address& cep, 1745 address& sep, 1746 address& aep, 1747 address& iep, 1748 address& lep, 1749 address& fep, 1750 address& dep, 1751 address& vep) { 1752 assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); 1753 Label L; 1754 aep = __ pc(); __ push_ptr(); __ jmp(L); 1755#ifndef _LP64 1756 fep = __ pc(); __ push(ftos); __ jmp(L); 1757 dep = __ pc(); __ push(dtos); __ jmp(L); 1758#else 1759 fep = __ pc(); __ push_f(xmm0); __ jmp(L); 1760 dep = __ pc(); __ push_d(xmm0); __ jmp(L); 1761#endif // _LP64 1762 lep = __ pc(); __ push_l(); __ jmp(L); 1763 bep = cep = sep = 1764 iep = __ pc(); __ push_i(); 1765 vep = __ pc(); 1766 __ bind(L); 1767 generate_and_dispatch(t); 1768} 1769 1770 1771//----------------------------------------------------------------------------- 1772// Generation of individual instructions 1773 1774// helpers for generate_and_dispatch 1775 1776 1777InterpreterGenerator::InterpreterGenerator(StubQueue* code) 1778 : TemplateInterpreterGenerator(code) { 1779 generate_all(); // down here so it can be "virtual" 1780} 1781 1782//----------------------------------------------------------------------------- 1783 1784// Non-product code 1785#ifndef PRODUCT 1786 1787address TemplateInterpreterGenerator::generate_trace_code(TosState state) { 1788 address entry = __ pc(); 1789 1790#ifndef _LP64 1791 // prepare expression stack 1792 __ pop(rcx); // pop return address so expression stack is 'pure' 1793 __ push(state); // save tosca 1794 1795 // pass tosca registers as arguments & call tracer 1796 __ call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), rcx, rax, rdx); 1797 __ mov(rcx, rax); // make sure return address is not destroyed by pop(state) 1798 __ pop(state); // restore tosca 1799 1800 // return 1801 __ jmp(rcx); 1802#else 1803 __ push(state); 1804 __ push(c_rarg0); 1805 __ push(c_rarg1); 1806 __ push(c_rarg2); 1807 __ push(c_rarg3); 1808 __ mov(c_rarg2, rax); // Pass itos 1809#ifdef _WIN64 1810 __ movflt(xmm3, xmm0); // Pass ftos 1811#endif 1812 __ call_VM(noreg, 1813 CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), 1814 c_rarg1, c_rarg2, c_rarg3); 1815 __ pop(c_rarg3); 1816 __ pop(c_rarg2); 1817 __ pop(c_rarg1); 1818 __ pop(c_rarg0); 1819 __ pop(state); 1820 __ ret(0); // return from result handler 1821#endif // _LP64 1822 1823 return entry; 1824} 1825 1826void TemplateInterpreterGenerator::count_bytecode() { 1827 __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); 1828} 1829 1830void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { 1831 __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); 1832} 1833 1834void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { 1835 __ mov32(rbx, ExternalAddress((address) &BytecodePairHistogram::_index)); 1836 __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); 1837 __ orl(rbx, 1838 ((int) t->bytecode()) << 1839 BytecodePairHistogram::log2_number_of_codes); 1840 __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); 1841 __ lea(rscratch1, ExternalAddress((address) BytecodePairHistogram::_counters)); 1842 __ incrementl(Address(rscratch1, rbx, Address::times_4)); 1843} 1844 1845 1846void TemplateInterpreterGenerator::trace_bytecode(Template* t) { 1847 // Call a little run-time stub to avoid blow-up for each bytecode. 1848 // The run-time runtime saves the right registers, depending on 1849 // the tosca in-state for the given template. 1850 1851 assert(Interpreter::trace_code(t->tos_in()) != NULL, 1852 "entry must have been generated"); 1853#ifndef _LP64 1854 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); 1855#else 1856 __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM) 1857 __ andptr(rsp, -16); // align stack as required by ABI 1858 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); 1859 __ mov(rsp, r12); // restore sp 1860 __ reinit_heapbase(); 1861#endif // _LP64 1862} 1863 1864 1865void TemplateInterpreterGenerator::stop_interpreter_at() { 1866 Label L; 1867 __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), 1868 StopInterpreterAt); 1869 __ jcc(Assembler::notEqual, L); 1870 __ int3(); 1871 __ bind(L); 1872} 1873#endif // !PRODUCT 1874#endif // ! CC_INTERP 1875