author | twisti |
Fri, 18 Dec 2015 12:39:02 -0800 | |
changeset 35135 | dd2ce9021031 |
parent 34651 | 07b1cc0f6040 |
child 35201 | 996db89f378e |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
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#include "precompiled.hpp" |
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#include "asm/macroAssembler.hpp" |
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#include "interpreter/bytecodeHistogram.hpp" |
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#include "interpreter/interpreter.hpp" |
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#include "interpreter/interpreterGenerator.hpp" |
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#include "interpreter/interpreterRuntime.hpp" |
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#include "interpreter/interp_masm.hpp" |
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#include "interpreter/templateTable.hpp" |
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#include "oops/arrayOop.hpp" |
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#include "oops/methodData.hpp" |
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#include "oops/method.hpp" |
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#include "oops/oop.inline.hpp" |
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#include "prims/jvmtiExport.hpp" |
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#include "prims/jvmtiThreadState.hpp" |
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#include "runtime/arguments.hpp" |
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#include "runtime/deoptimization.hpp" |
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#include "runtime/frame.inline.hpp" |
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#include "runtime/sharedRuntime.hpp" |
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#include "runtime/stubRoutines.hpp" |
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#include "runtime/synchronizer.hpp" |
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#include "runtime/timer.hpp" |
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#include "runtime/vframeArray.hpp" |
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#include "utilities/debug.hpp" |
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#include "utilities/macros.hpp" |
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#ifndef CC_INTERP |
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#ifndef FAST_DISPATCH |
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#define FAST_DISPATCH 1 |
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#endif |
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#undef FAST_DISPATCH |
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// Generation of Interpreter |
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// |
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// The InterpreterGenerator generates the interpreter into Interpreter::_code. |
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#define __ _masm-> |
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//---------------------------------------------------------------------------------------------------- |
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void InterpreterGenerator::save_native_result(void) { |
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// result potentially in O0/O1: save it across calls |
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const Address& l_tmp = InterpreterMacroAssembler::l_tmp; |
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// result potentially in F0/F1: save it across calls |
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const Address& d_tmp = InterpreterMacroAssembler::d_tmp; |
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// save and restore any potential method result value around the unlocking operation |
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__ stf(FloatRegisterImpl::D, F0, d_tmp); |
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#ifdef _LP64 |
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__ stx(O0, l_tmp); |
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#else |
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__ std(O0, l_tmp); |
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#endif |
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} |
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void InterpreterGenerator::restore_native_result(void) { |
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const Address& l_tmp = InterpreterMacroAssembler::l_tmp; |
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const Address& d_tmp = InterpreterMacroAssembler::d_tmp; |
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// Restore any method result value |
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__ ldf(FloatRegisterImpl::D, d_tmp, F0); |
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#ifdef _LP64 |
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__ ldx(l_tmp, O0); |
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#else |
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__ ldd(l_tmp, O0); |
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#endif |
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} |
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address TemplateInterpreterGenerator::generate_exception_handler_common(const char* name, const char* message, bool pass_oop) { |
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assert(!pass_oop || message == NULL, "either oop or message but not both"); |
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address entry = __ pc(); |
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// expression stack must be empty before entering the VM if an exception happened |
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__ empty_expression_stack(); |
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// load exception object |
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__ set((intptr_t)name, G3_scratch); |
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if (pass_oop) { |
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__ call_VM(Oexception, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_klass_exception), G3_scratch, Otos_i); |
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} else { |
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__ set((intptr_t)message, G4_scratch); |
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__ call_VM(Oexception, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), G3_scratch, G4_scratch); |
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} |
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// throw exception |
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assert(Interpreter::throw_exception_entry() != NULL, "generate it first"); |
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AddressLiteral thrower(Interpreter::throw_exception_entry()); |
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__ jump_to(thrower, G3_scratch); |
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__ delayed()->nop(); |
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return entry; |
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} |
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address TemplateInterpreterGenerator::generate_ClassCastException_handler() { |
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address entry = __ pc(); |
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// expression stack must be empty before entering the VM if an exception |
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// happened |
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__ empty_expression_stack(); |
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// load exception object |
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__ call_VM(Oexception, |
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CAST_FROM_FN_PTR(address, |
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InterpreterRuntime::throw_ClassCastException), |
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Otos_i); |
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__ should_not_reach_here(); |
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return entry; |
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} |
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address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler(const char* name) { |
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address entry = __ pc(); |
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// expression stack must be empty before entering the VM if an exception happened |
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__ empty_expression_stack(); |
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// convention: expect aberrant index in register G3_scratch, then shuffle the |
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// index to G4_scratch for the VM call |
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__ mov(G3_scratch, G4_scratch); |
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__ set((intptr_t)name, G3_scratch); |
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__ call_VM(Oexception, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException), G3_scratch, G4_scratch); |
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__ should_not_reach_here(); |
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return entry; |
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} |
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address TemplateInterpreterGenerator::generate_StackOverflowError_handler() { |
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address entry = __ pc(); |
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// expression stack must be empty before entering the VM if an exception happened |
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__ empty_expression_stack(); |
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__ call_VM(Oexception, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_StackOverflowError)); |
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__ should_not_reach_here(); |
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return entry; |
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} |
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address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step, size_t index_size) { |
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address entry = __ pc(); |
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if (state == atos) { |
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__ profile_return_type(O0, G3_scratch, G1_scratch); |
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} |
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#if !defined(_LP64) && defined(COMPILER2) |
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// All return values are where we want them, except for Longs. C2 returns |
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// longs in G1 in the 32-bit build whereas the interpreter wants them in O0/O1. |
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// Since the interpreter will return longs in G1 and O0/O1 in the 32bit |
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// build even if we are returning from interpreted we just do a little |
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// stupid shuffing. |
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// Note: I tried to make c2 return longs in O0/O1 and G1 so we wouldn't have to |
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// do this here. Unfortunately if we did a rethrow we'd see an machepilog node |
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// first which would move g1 -> O0/O1 and destroy the exception we were throwing. |
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if (state == ltos) { |
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__ srl (G1, 0, O1); |
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__ srlx(G1, 32, O0); |
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} |
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#endif // !_LP64 && COMPILER2 |
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// The callee returns with the stack possibly adjusted by adapter transition |
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// We remove that possible adjustment here. |
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// All interpreter local registers are untouched. Any result is passed back |
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// in the O0/O1 or float registers. Before continuing, the arguments must be |
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// popped from the java expression stack; i.e., Lesp must be adjusted. |
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__ mov(Llast_SP, SP); // Remove any adapter added stack space. |
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const Register cache = G3_scratch; |
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const Register index = G1_scratch; |
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__ get_cache_and_index_at_bcp(cache, index, 1, index_size); |
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const Register flags = cache; |
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__ ld_ptr(cache, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset(), flags); |
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const Register parameter_size = flags; |
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__ and3(flags, ConstantPoolCacheEntry::parameter_size_mask, parameter_size); // argument size in words |
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__ sll(parameter_size, Interpreter::logStackElementSize, parameter_size); // each argument size in bytes |
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__ add(Lesp, parameter_size, Lesp); // pop arguments |
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__ dispatch_next(state, step); |
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return entry; |
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} |
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address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, int step) { |
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address entry = __ pc(); |
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__ get_constant_pool_cache(LcpoolCache); // load LcpoolCache |
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#if INCLUDE_JVMCI |
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// Check if we need to take lock at entry of synchronized method. |
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if (UseJVMCICompiler) { |
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Label L; |
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Address pending_monitor_enter_addr(G2_thread, JavaThread::pending_monitorenter_offset()); |
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__ ldbool(pending_monitor_enter_addr, Gtemp); // Load if pending monitor enter |
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__ cmp_and_br_short(Gtemp, G0, Assembler::equal, Assembler::pn, L); |
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// Clear flag. |
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__ stbool(G0, pending_monitor_enter_addr); |
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// Take lock. |
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lock_method(); |
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__ bind(L); |
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} |
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#endif |
1 | 221 |
{ Label L; |
2571 | 222 |
Address exception_addr(G2_thread, Thread::pending_exception_offset()); |
223 |
__ ld_ptr(exception_addr, Gtemp); // Load pending exception. |
|
10252 | 224 |
__ br_null_short(Gtemp, Assembler::pt, L); |
1 | 225 |
__ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception)); |
226 |
__ should_not_reach_here(); |
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227 |
__ bind(L); |
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228 |
} |
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229 |
__ dispatch_next(state, step); |
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230 |
return entry; |
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231 |
} |
|
232 |
||
233 |
// A result handler converts/unboxes a native call result into |
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234 |
// a java interpreter/compiler result. The current frame is an |
|
235 |
// interpreter frame. The activation frame unwind code must be |
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236 |
// consistent with that of TemplateTable::_return(...). In the |
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// case of native methods, the caller's SP was not modified. |
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238 |
address TemplateInterpreterGenerator::generate_result_handler_for(BasicType type) { |
|
239 |
address entry = __ pc(); |
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240 |
Register Itos_i = Otos_i ->after_save(); |
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241 |
Register Itos_l = Otos_l ->after_save(); |
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242 |
Register Itos_l1 = Otos_l1->after_save(); |
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243 |
Register Itos_l2 = Otos_l2->after_save(); |
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244 |
switch (type) { |
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245 |
case T_BOOLEAN: __ subcc(G0, O0, G0); __ addc(G0, 0, Itos_i); break; // !0 => true; 0 => false |
|
246 |
case T_CHAR : __ sll(O0, 16, O0); __ srl(O0, 16, Itos_i); break; // cannot use and3, 0xFFFF too big as immediate value! |
|
247 |
case T_BYTE : __ sll(O0, 24, O0); __ sra(O0, 24, Itos_i); break; |
|
248 |
case T_SHORT : __ sll(O0, 16, O0); __ sra(O0, 16, Itos_i); break; |
|
249 |
case T_LONG : |
|
250 |
#ifndef _LP64 |
|
251 |
__ mov(O1, Itos_l2); // move other half of long |
|
252 |
#endif // ifdef or no ifdef, fall through to the T_INT case |
|
253 |
case T_INT : __ mov(O0, Itos_i); break; |
|
254 |
case T_VOID : /* nothing to do */ break; |
|
255 |
case T_FLOAT : assert(F0 == Ftos_f, "fix this code" ); break; |
|
256 |
case T_DOUBLE : assert(F0 == Ftos_d, "fix this code" ); break; |
|
257 |
case T_OBJECT : |
|
258 |
__ ld_ptr(FP, (frame::interpreter_frame_oop_temp_offset*wordSize) + STACK_BIAS, Itos_i); |
|
259 |
__ verify_oop(Itos_i); |
|
260 |
break; |
|
261 |
default : ShouldNotReachHere(); |
|
262 |
} |
|
263 |
__ ret(); // return from interpreter activation |
|
264 |
__ delayed()->restore(I5_savedSP, G0, SP); // remove interpreter frame |
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NOT_PRODUCT(__ emit_int32(0);) // marker for disassembly |
1 | 266 |
return entry; |
267 |
} |
|
268 |
||
269 |
address TemplateInterpreterGenerator::generate_safept_entry_for(TosState state, address runtime_entry) { |
|
270 |
address entry = __ pc(); |
|
271 |
__ push(state); |
|
272 |
__ call_VM(noreg, runtime_entry); |
|
273 |
__ dispatch_via(vtos, Interpreter::normal_table(vtos)); |
|
274 |
return entry; |
|
275 |
} |
|
276 |
||
277 |
||
278 |
address TemplateInterpreterGenerator::generate_continuation_for(TosState state) { |
|
279 |
address entry = __ pc(); |
|
280 |
__ dispatch_next(state); |
|
281 |
return entry; |
|
282 |
} |
|
283 |
||
284 |
// |
|
285 |
// Helpers for commoning out cases in the various type of method entries. |
|
286 |
// |
|
287 |
||
288 |
// increment invocation count & check for overflow |
|
289 |
// |
|
290 |
// Note: checking for negative value instead of overflow |
|
291 |
// so we have a 'sticky' overflow test |
|
292 |
// |
|
293 |
// Lmethod: method |
|
294 |
// ??: invocation counter |
|
295 |
// |
|
296 |
void InterpreterGenerator::generate_counter_incr(Label* overflow, Label* profile_method, Label* profile_method_continue) { |
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// Note: In tiered we increment either counters in MethodCounters* or in |
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298 |
// MDO depending if we're profiling or not. |
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const Register G3_method_counters = G3_scratch; |
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300 |
Label done; |
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301 |
|
6453 | 302 |
if (TieredCompilation) { |
303 |
const int increment = InvocationCounter::count_increment; |
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Label no_mdo; |
6453 | 305 |
if (ProfileInterpreter) { |
306 |
// If no method data exists, go to profile_continue. |
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307 |
__ ld_ptr(Lmethod, Method::method_data_offset(), G4_scratch); |
10252 | 308 |
__ br_null_short(G4_scratch, Assembler::pn, no_mdo); |
6453 | 309 |
// Increment counter |
310 |
Address mdo_invocation_counter(G4_scratch, |
|
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in_bytes(MethodData::invocation_counter_offset()) + |
6453 | 312 |
in_bytes(InvocationCounter::counter_offset())); |
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313 |
Address mask(G4_scratch, in_bytes(MethodData::invoke_mask_offset())); |
6453 | 314 |
__ increment_mask_and_jump(mdo_invocation_counter, increment, mask, |
315 |
G3_scratch, Lscratch, |
|
316 |
Assembler::zero, overflow); |
|
10252 | 317 |
__ ba_short(done); |
6453 | 318 |
} |
1 | 319 |
|
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320 |
// Increment counter in MethodCounters* |
6453 | 321 |
__ bind(no_mdo); |
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322 |
Address invocation_counter(G3_method_counters, |
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323 |
in_bytes(MethodCounters::invocation_counter_offset()) + |
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|
324 |
in_bytes(InvocationCounter::counter_offset())); |
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325 |
__ get_method_counters(Lmethod, G3_method_counters, done); |
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326 |
Address mask(G3_method_counters, in_bytes(MethodCounters::invoke_mask_offset())); |
6453 | 327 |
__ increment_mask_and_jump(invocation_counter, increment, mask, |
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328 |
G4_scratch, Lscratch, |
6453 | 329 |
Assembler::zero, overflow); |
330 |
__ bind(done); |
|
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331 |
} else { // not TieredCompilation |
6453 | 332 |
// Update standard invocation counters |
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333 |
__ get_method_counters(Lmethod, G3_method_counters, done); |
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|
334 |
__ increment_invocation_counter(G3_method_counters, O0, G4_scratch); |
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335 |
if (ProfileInterpreter) { |
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336 |
Address interpreter_invocation_counter(G3_method_counters, |
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|
337 |
in_bytes(MethodCounters::interpreter_invocation_counter_offset())); |
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|
338 |
__ ld(interpreter_invocation_counter, G4_scratch); |
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|
339 |
__ inc(G4_scratch); |
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|
340 |
__ st(G4_scratch, interpreter_invocation_counter); |
6453 | 341 |
} |
1 | 342 |
|
6453 | 343 |
if (ProfileInterpreter && profile_method != NULL) { |
344 |
// Test to see if we should create a method data oop |
|
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345 |
Address profile_limit(G3_method_counters, in_bytes(MethodCounters::interpreter_profile_limit_offset())); |
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346 |
__ ld(profile_limit, G1_scratch); |
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|
347 |
__ cmp_and_br_short(O0, G1_scratch, Assembler::lessUnsigned, Assembler::pn, *profile_method_continue); |
1 | 348 |
|
6453 | 349 |
// if no method data exists, go to profile_method |
350 |
__ test_method_data_pointer(*profile_method); |
|
351 |
} |
|
352 |
||
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353 |
Address invocation_limit(G3_method_counters, in_bytes(MethodCounters::interpreter_invocation_limit_offset())); |
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|
354 |
__ ld(invocation_limit, G3_scratch); |
6453 | 355 |
__ cmp(O0, G3_scratch); |
10252 | 356 |
__ br(Assembler::greaterEqualUnsigned, false, Assembler::pn, *overflow); // Far distance |
6453 | 357 |
__ delayed()->nop(); |
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|
358 |
__ bind(done); |
6453 | 359 |
} |
1 | 360 |
|
361 |
} |
|
362 |
||
363 |
// Allocate monitor and lock method (asm interpreter) |
|
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364 |
// ebx - Method* |
1 | 365 |
// |
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366 |
void TemplateInterpreterGenerator::lock_method() { |
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367 |
__ ld(Lmethod, in_bytes(Method::access_flags_offset()), O0); // Load access flags. |
1 | 368 |
|
369 |
#ifdef ASSERT |
|
370 |
{ Label ok; |
|
371 |
__ btst(JVM_ACC_SYNCHRONIZED, O0); |
|
372 |
__ br( Assembler::notZero, false, Assembler::pt, ok); |
|
373 |
__ delayed()->nop(); |
|
374 |
__ stop("method doesn't need synchronization"); |
|
375 |
__ bind(ok); |
|
376 |
} |
|
377 |
#endif // ASSERT |
|
378 |
||
379 |
// get synchronization object to O0 |
|
380 |
{ Label done; |
|
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|
381 |
const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
1 | 382 |
__ btst(JVM_ACC_STATIC, O0); |
383 |
__ br( Assembler::zero, true, Assembler::pt, done); |
|
384 |
__ delayed()->ld_ptr(Llocals, Interpreter::local_offset_in_bytes(0), O0); // get receiver for not-static case |
|
385 |
||
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|
386 |
__ ld_ptr( Lmethod, in_bytes(Method::const_offset()), O0); |
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387 |
__ ld_ptr( O0, in_bytes(ConstMethod::constants_offset()), O0); |
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|
388 |
__ ld_ptr( O0, ConstantPool::pool_holder_offset_in_bytes(), O0); |
1 | 389 |
|
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|
390 |
// lock the mirror, not the Klass* |
1 | 391 |
__ ld_ptr( O0, mirror_offset, O0); |
392 |
||
393 |
#ifdef ASSERT |
|
394 |
__ tst(O0); |
|
12103 | 395 |
__ breakpoint_trap(Assembler::zero, Assembler::ptr_cc); |
1 | 396 |
#endif // ASSERT |
397 |
||
398 |
__ bind(done); |
|
399 |
} |
|
400 |
||
401 |
__ add_monitor_to_stack(true, noreg, noreg); // allocate monitor elem |
|
402 |
__ st_ptr( O0, Lmonitors, BasicObjectLock::obj_offset_in_bytes()); // store object |
|
403 |
// __ untested("lock_object from method entry"); |
|
404 |
__ lock_object(Lmonitors, O0); |
|
405 |
} |
|
406 |
||
407 |
||
408 |
void TemplateInterpreterGenerator::generate_stack_overflow_check(Register Rframe_size, |
|
409 |
Register Rscratch, |
|
410 |
Register Rscratch2) { |
|
411 |
const int page_size = os::vm_page_size(); |
|
412 |
Label after_frame_check; |
|
413 |
||
414 |
assert_different_registers(Rframe_size, Rscratch, Rscratch2); |
|
415 |
||
10252 | 416 |
__ set(page_size, Rscratch); |
417 |
__ cmp_and_br_short(Rframe_size, Rscratch, Assembler::lessEqual, Assembler::pt, after_frame_check); |
|
1 | 418 |
|
419 |
// get the stack base, and in debug, verify it is non-zero |
|
2571 | 420 |
__ ld_ptr( G2_thread, Thread::stack_base_offset(), Rscratch ); |
1 | 421 |
#ifdef ASSERT |
422 |
Label base_not_zero; |
|
10252 | 423 |
__ br_notnull_short(Rscratch, Assembler::pn, base_not_zero); |
1 | 424 |
__ stop("stack base is zero in generate_stack_overflow_check"); |
425 |
__ bind(base_not_zero); |
|
426 |
#endif |
|
427 |
||
428 |
// get the stack size, and in debug, verify it is non-zero |
|
429 |
assert( sizeof(size_t) == sizeof(intptr_t), "wrong load size" ); |
|
2571 | 430 |
__ ld_ptr( G2_thread, Thread::stack_size_offset(), Rscratch2 ); |
1 | 431 |
#ifdef ASSERT |
432 |
Label size_not_zero; |
|
10252 | 433 |
__ br_notnull_short(Rscratch2, Assembler::pn, size_not_zero); |
1 | 434 |
__ stop("stack size is zero in generate_stack_overflow_check"); |
435 |
__ bind(size_not_zero); |
|
436 |
#endif |
|
437 |
||
438 |
// compute the beginning of the protected zone minus the requested frame size |
|
439 |
__ sub( Rscratch, Rscratch2, Rscratch ); |
|
440 |
__ set( (StackRedPages+StackYellowPages) * page_size, Rscratch2 ); |
|
441 |
__ add( Rscratch, Rscratch2, Rscratch ); |
|
442 |
||
443 |
// Add in the size of the frame (which is the same as subtracting it from the |
|
444 |
// SP, which would take another register |
|
445 |
__ add( Rscratch, Rframe_size, Rscratch ); |
|
446 |
||
447 |
// the frame is greater than one page in size, so check against |
|
448 |
// the bottom of the stack |
|
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|
449 |
__ cmp_and_brx_short(SP, Rscratch, Assembler::greaterUnsigned, Assembler::pt, after_frame_check); |
1 | 450 |
|
11411 | 451 |
// the stack will overflow, throw an exception |
452 |
||
453 |
// Note that SP is restored to sender's sp (in the delay slot). This |
|
454 |
// is necessary if the sender's frame is an extended compiled frame |
|
455 |
// (see gen_c2i_adapter()) and safer anyway in case of JSR292 |
|
456 |
// adaptations. |
|
1 | 457 |
|
11411 | 458 |
// Note also that the restored frame is not necessarily interpreted. |
459 |
// Use the shared runtime version of the StackOverflowError. |
|
460 |
assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated"); |
|
461 |
AddressLiteral stub(StubRoutines::throw_StackOverflowError_entry()); |
|
462 |
__ jump_to(stub, Rscratch); |
|
463 |
__ delayed()->mov(O5_savedSP, SP); |
|
1 | 464 |
|
465 |
// if you get to here, then there is enough stack space |
|
466 |
__ bind( after_frame_check ); |
|
467 |
} |
|
468 |
||
469 |
||
470 |
// |
|
471 |
// Generate a fixed interpreter frame. This is identical setup for interpreted |
|
472 |
// methods and for native methods hence the shared code. |
|
473 |
||
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|
474 |
|
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|
475 |
//---------------------------------------------------------------------------------------------------- |
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|
476 |
// Stack frame layout |
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|
477 |
// |
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|
478 |
// When control flow reaches any of the entry types for the interpreter |
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|
479 |
// the following holds -> |
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|
480 |
// |
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|
481 |
// C2 Calling Conventions: |
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|
482 |
// |
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|
483 |
// The entry code below assumes that the following registers are set |
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|
484 |
// when coming in: |
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|
485 |
// G5_method: holds the Method* of the method to call |
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|
486 |
// Lesp: points to the TOS of the callers expression stack |
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|
487 |
// after having pushed all the parameters |
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|
488 |
// |
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|
489 |
// The entry code does the following to setup an interpreter frame |
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|
490 |
// pop parameters from the callers stack by adjusting Lesp |
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|
491 |
// set O0 to Lesp |
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|
492 |
// compute X = (max_locals - num_parameters) |
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|
493 |
// bump SP up by X to accomadate the extra locals |
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|
494 |
// compute X = max_expression_stack |
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|
495 |
// + vm_local_words |
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|
496 |
// + 16 words of register save area |
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|
497 |
// save frame doing a save sp, -X, sp growing towards lower addresses |
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|
498 |
// set Lbcp, Lmethod, LcpoolCache |
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|
499 |
// set Llocals to i0 |
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|
500 |
// set Lmonitors to FP - rounded_vm_local_words |
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|
501 |
// set Lesp to Lmonitors - 4 |
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|
502 |
// |
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|
503 |
// The frame has now been setup to do the rest of the entry code |
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|
504 |
|
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|
505 |
// Try this optimization: Most method entries could live in a |
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changeset
|
506 |
// "one size fits all" stack frame without all the dynamic size |
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|
507 |
// calculations. It might be profitable to do all this calculation |
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|
508 |
// statically and approximately for "small enough" methods. |
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changeset
|
509 |
|
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changeset
|
510 |
//----------------------------------------------------------------------------------------------- |
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|
511 |
|
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|
512 |
// C1 Calling conventions |
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|
513 |
// |
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|
514 |
// Upon method entry, the following registers are setup: |
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|
515 |
// |
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|
516 |
// g2 G2_thread: current thread |
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|
517 |
// g5 G5_method: method to activate |
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|
518 |
// g4 Gargs : pointer to last argument |
b5c40ed1d349
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changeset
|
519 |
// |
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coleenp
parents:
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diff
changeset
|
520 |
// |
b5c40ed1d349
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parents:
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diff
changeset
|
521 |
// Stack: |
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parents:
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diff
changeset
|
522 |
// |
b5c40ed1d349
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|
523 |
// +---------------+ <--- sp |
b5c40ed1d349
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coleenp
parents:
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diff
changeset
|
524 |
// | | |
b5c40ed1d349
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parents:
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changeset
|
525 |
// : reg save area : |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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diff
changeset
|
526 |
// | | |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
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parents:
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|
527 |
// +---------------+ <--- sp + 0x40 |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
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parents:
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diff
changeset
|
528 |
// | | |
b5c40ed1d349
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parents:
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changeset
|
529 |
// : extra 7 slots : note: these slots are not really needed for the interpreter (fix later) |
b5c40ed1d349
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coleenp
parents:
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diff
changeset
|
530 |
// | | |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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|
531 |
// +---------------+ <--- sp + 0x5c |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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diff
changeset
|
532 |
// | | |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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diff
changeset
|
533 |
// : free : |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
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diff
changeset
|
534 |
// | | |
b5c40ed1d349
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|
535 |
// +---------------+ <--- Gargs |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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changeset
|
536 |
// | | |
b5c40ed1d349
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parents:
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diff
changeset
|
537 |
// : arguments : |
b5c40ed1d349
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coleenp
parents:
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diff
changeset
|
538 |
// | | |
b5c40ed1d349
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parents:
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diff
changeset
|
539 |
// +---------------+ |
b5c40ed1d349
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coleenp
parents:
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diff
changeset
|
540 |
// | | |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
25717
diff
changeset
|
541 |
// |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
25717
diff
changeset
|
542 |
// |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
25717
diff
changeset
|
543 |
// |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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changeset
|
544 |
// AFTER FRAME HAS BEEN SETUP for method interpretation the stack looks like: |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
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parents:
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diff
changeset
|
545 |
// |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
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parents:
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changeset
|
546 |
// +---------------+ <--- sp |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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diff
changeset
|
547 |
// | | |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
25717
diff
changeset
|
548 |
// : reg save area : |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
25717
diff
changeset
|
549 |
// | | |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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diff
changeset
|
550 |
// +---------------+ <--- sp + 0x40 |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
25717
diff
changeset
|
551 |
// | | |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
25717
diff
changeset
|
552 |
// : extra 7 slots : note: these slots are not really needed for the interpreter (fix later) |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
25717
diff
changeset
|
553 |
// | | |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
25717
diff
changeset
|
554 |
// +---------------+ <--- sp + 0x5c |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
25717
diff
changeset
|
555 |
// | | |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
25717
diff
changeset
|
556 |
// : : |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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diff
changeset
|
557 |
// | | <--- Lesp |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
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|
558 |
// +---------------+ <--- Lmonitors (fp - 0x18) |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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changeset
|
559 |
// | VM locals | |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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changeset
|
560 |
// +---------------+ <--- fp |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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diff
changeset
|
561 |
// | | |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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diff
changeset
|
562 |
// : reg save area : |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
25717
diff
changeset
|
563 |
// | | |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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changeset
|
564 |
// +---------------+ <--- fp + 0x40 |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
25717
diff
changeset
|
565 |
// | | |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
25717
diff
changeset
|
566 |
// : extra 7 slots : note: these slots are not really needed for the interpreter (fix later) |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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diff
changeset
|
567 |
// | | |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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diff
changeset
|
568 |
// +---------------+ <--- fp + 0x5c |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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diff
changeset
|
569 |
// | | |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
25717
diff
changeset
|
570 |
// : free : |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
25717
diff
changeset
|
571 |
// | | |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
25717
diff
changeset
|
572 |
// +---------------+ |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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diff
changeset
|
573 |
// | | |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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changeset
|
574 |
// : nonarg locals : |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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diff
changeset
|
575 |
// | | |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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diff
changeset
|
576 |
// +---------------+ |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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diff
changeset
|
577 |
// | | |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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diff
changeset
|
578 |
// : arguments : |
b5c40ed1d349
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parents:
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changeset
|
579 |
// | | <--- Llocals |
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changeset
|
580 |
// +---------------+ <--- Gargs |
b5c40ed1d349
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coleenp
parents:
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diff
changeset
|
581 |
// | | |
b5c40ed1d349
8003426: Remove UseFastAccessors and UseFastEmptyMethods except for zero
coleenp
parents:
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changeset
|
582 |
|
1 | 583 |
void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { |
584 |
// |
|
585 |
// |
|
586 |
// The entry code sets up a new interpreter frame in 4 steps: |
|
587 |
// |
|
588 |
// 1) Increase caller's SP by for the extra local space needed: |
|
589 |
// (check for overflow) |
|
590 |
// Efficient implementation of xload/xstore bytecodes requires |
|
591 |
// that arguments and non-argument locals are in a contigously |
|
592 |
// addressable memory block => non-argument locals must be |
|
593 |
// allocated in the caller's frame. |
|
594 |
// |
|
595 |
// 2) Create a new stack frame and register window: |
|
596 |
// The new stack frame must provide space for the standard |
|
597 |
// register save area, the maximum java expression stack size, |
|
598 |
// the monitor slots (0 slots initially), and some frame local |
|
599 |
// scratch locations. |
|
600 |
// |
|
601 |
// 3) The following interpreter activation registers must be setup: |
|
602 |
// Lesp : expression stack pointer |
|
603 |
// Lbcp : bytecode pointer |
|
604 |
// Lmethod : method |
|
605 |
// Llocals : locals pointer |
|
606 |
// Lmonitors : monitor pointer |
|
607 |
// LcpoolCache: constant pool cache |
|
608 |
// |
|
609 |
// 4) Initialize the non-argument locals if necessary: |
|
610 |
// Non-argument locals may need to be initialized to NULL |
|
611 |
// for GC to work. If the oop-map information is accurate |
|
612 |
// (in the absence of the JSR problem), no initialization |
|
613 |
// is necessary. |
|
614 |
// |
|
615 |
// (gri - 2/25/2000) |
|
616 |
||
617 |
||
618 |
int rounded_vm_local_words = round_to( frame::interpreter_frame_vm_local_words, WordsPerLong ); |
|
619 |
||
620 |
const int extra_space = |
|
621 |
rounded_vm_local_words + // frame local scratch space |
|
17875
9d4aa49a1d76
8010460: Interpreter on some platforms loads ConstMethod::_max_stack and misses extra stack slots for JSR 292
roland
parents:
17000
diff
changeset
|
622 |
Method::extra_stack_entries() + // extra stack for jsr 292 |
1 | 623 |
frame::memory_parameter_word_sp_offset + // register save area |
624 |
(native_call ? frame::interpreter_frame_extra_outgoing_argument_words : 0); |
|
625 |
||
626 |
const Register Glocals_size = G3; |
|
14745
03904dd8649b
8004076: Move _max_locals and _size_of_parameters to ConstMethod for better sharing.
jiangli
parents:
14633
diff
changeset
|
627 |
const Register RconstMethod = Glocals_size; |
1 | 628 |
const Register Otmp1 = O3; |
629 |
const Register Otmp2 = O4; |
|
630 |
// Lscratch can't be used as a temporary because the call_stub uses |
|
631 |
// it to assert that the stack frame was setup correctly. |
|
14745
03904dd8649b
8004076: Move _max_locals and _size_of_parameters to ConstMethod for better sharing.
jiangli
parents:
14633
diff
changeset
|
632 |
const Address constMethod (G5_method, Method::const_offset()); |
03904dd8649b
8004076: Move _max_locals and _size_of_parameters to ConstMethod for better sharing.
jiangli
parents:
14633
diff
changeset
|
633 |
const Address size_of_parameters(RconstMethod, ConstMethod::size_of_parameters_offset()); |
1 | 634 |
|
14745
03904dd8649b
8004076: Move _max_locals and _size_of_parameters to ConstMethod for better sharing.
jiangli
parents:
14633
diff
changeset
|
635 |
__ ld_ptr( constMethod, RconstMethod ); |
1 | 636 |
__ lduh( size_of_parameters, Glocals_size); |
637 |
||
638 |
// Gargs points to first local + BytesPerWord |
|
639 |
// Set the saved SP after the register window save |
|
640 |
// |
|
641 |
assert_different_registers(Gargs, Glocals_size, Gframe_size, O5_savedSP); |
|
5419 | 642 |
__ sll(Glocals_size, Interpreter::logStackElementSize, Otmp1); |
1 | 643 |
__ add(Gargs, Otmp1, Gargs); |
644 |
||
645 |
if (native_call) { |
|
646 |
__ calc_mem_param_words( Glocals_size, Gframe_size ); |
|
647 |
__ add( Gframe_size, extra_space, Gframe_size); |
|
648 |
__ round_to( Gframe_size, WordsPerLong ); |
|
649 |
__ sll( Gframe_size, LogBytesPerWord, Gframe_size ); |
|
650 |
} else { |
|
651 |
||
652 |
// |
|
653 |
// Compute number of locals in method apart from incoming parameters |
|
654 |
// |
|
14745
03904dd8649b
8004076: Move _max_locals and _size_of_parameters to ConstMethod for better sharing.
jiangli
parents:
14633
diff
changeset
|
655 |
const Address size_of_locals (Otmp1, ConstMethod::size_of_locals_offset()); |
03904dd8649b
8004076: Move _max_locals and _size_of_parameters to ConstMethod for better sharing.
jiangli
parents:
14633
diff
changeset
|
656 |
__ ld_ptr( constMethod, Otmp1 ); |
1 | 657 |
__ lduh( size_of_locals, Otmp1 ); |
658 |
__ sub( Otmp1, Glocals_size, Glocals_size ); |
|
659 |
__ round_to( Glocals_size, WordsPerLong ); |
|
5419 | 660 |
__ sll( Glocals_size, Interpreter::logStackElementSize, Glocals_size ); |
1 | 661 |
|
662 |
// see if the frame is greater than one page in size. If so, |
|
663 |
// then we need to verify there is enough stack space remaining |
|
664 |
// Frame_size = (max_stack + extra_space) * BytesPerWord; |
|
14586
1262473e8fc1
8003848: Make ConstMethod::generic_signature_index optional and move Method::_max_stack to ConstMethod.
jiangli
parents:
13728
diff
changeset
|
665 |
__ ld_ptr( constMethod, Gframe_size ); |
1262473e8fc1
8003848: Make ConstMethod::generic_signature_index optional and move Method::_max_stack to ConstMethod.
jiangli
parents:
13728
diff
changeset
|
666 |
__ lduh( Gframe_size, in_bytes(ConstMethod::max_stack_offset()), Gframe_size ); |
1 | 667 |
__ add( Gframe_size, extra_space, Gframe_size ); |
668 |
__ round_to( Gframe_size, WordsPerLong ); |
|
5419 | 669 |
__ sll( Gframe_size, Interpreter::logStackElementSize, Gframe_size); |
1 | 670 |
|
671 |
// Add in java locals size for stack overflow check only |
|
672 |
__ add( Gframe_size, Glocals_size, Gframe_size ); |
|
673 |
||
674 |
const Register Otmp2 = O4; |
|
675 |
assert_different_registers(Otmp1, Otmp2, O5_savedSP); |
|
676 |
generate_stack_overflow_check(Gframe_size, Otmp1, Otmp2); |
|
677 |
||
678 |
__ sub( Gframe_size, Glocals_size, Gframe_size); |
|
679 |
||
680 |
// |
|
681 |
// bump SP to accomodate the extra locals |
|
682 |
// |
|
683 |
__ sub( SP, Glocals_size, SP ); |
|
684 |
} |
|
685 |
||
686 |
// |
|
687 |
// now set up a stack frame with the size computed above |
|
688 |
// |
|
689 |
__ neg( Gframe_size ); |
|
690 |
__ save( SP, Gframe_size, SP ); |
|
691 |
||
692 |
// |
|
693 |
// now set up all the local cache registers |
|
694 |
// |
|
695 |
// NOTE: At this point, Lbyte_code/Lscratch has been modified. Note |
|
696 |
// that all present references to Lbyte_code initialize the register |
|
697 |
// immediately before use |
|
698 |
if (native_call) { |
|
699 |
__ mov(G0, Lbcp); |
|
700 |
} else { |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
701 |
__ ld_ptr(G5_method, Method::const_offset(), Lbcp); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
702 |
__ add(Lbcp, in_bytes(ConstMethod::codes_offset()), Lbcp); |
1 | 703 |
} |
704 |
__ mov( G5_method, Lmethod); // set Lmethod |
|
705 |
__ get_constant_pool_cache( LcpoolCache ); // set LcpoolCache |
|
706 |
__ sub(FP, rounded_vm_local_words * BytesPerWord, Lmonitors ); // set Lmonitors |
|
707 |
#ifdef _LP64 |
|
708 |
__ add( Lmonitors, STACK_BIAS, Lmonitors ); // Account for 64 bit stack bias |
|
709 |
#endif |
|
710 |
__ sub(Lmonitors, BytesPerWord, Lesp); // set Lesp |
|
711 |
||
712 |
// setup interpreter activation registers |
|
713 |
__ sub(Gargs, BytesPerWord, Llocals); // set Llocals |
|
714 |
||
715 |
if (ProfileInterpreter) { |
|
716 |
#ifdef FAST_DISPATCH |
|
717 |
// FAST_DISPATCH and ProfileInterpreter are mutually exclusive since |
|
718 |
// they both use I2. |
|
719 |
assert(0, "FAST_DISPATCH and +ProfileInterpreter are mutually exclusive"); |
|
720 |
#endif // FAST_DISPATCH |
|
721 |
__ set_method_data_pointer(); |
|
722 |
} |
|
723 |
||
724 |
} |
|
725 |
||
9176
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
726 |
// Method entry for java.lang.ref.Reference.get. |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
727 |
address InterpreterGenerator::generate_Reference_get_entry(void) { |
15482
470d0b0c09f1
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
15116
diff
changeset
|
728 |
#if INCLUDE_ALL_GCS |
9176
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
729 |
// Code: _aload_0, _getfield, _areturn |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
730 |
// parameter size = 1 |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
731 |
// |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
732 |
// The code that gets generated by this routine is split into 2 parts: |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
733 |
// 1. The "intrinsified" code for G1 (or any SATB based GC), |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
734 |
// 2. The slow path - which is an expansion of the regular method entry. |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
735 |
// |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
736 |
// Notes:- |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
737 |
// * In the G1 code we do not check whether we need to block for |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
738 |
// a safepoint. If G1 is enabled then we must execute the specialized |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
739 |
// code for Reference.get (except when the Reference object is null) |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
740 |
// so that we can log the value in the referent field with an SATB |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
741 |
// update buffer. |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
742 |
// If the code for the getfield template is modified so that the |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
743 |
// G1 pre-barrier code is executed when the current method is |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
744 |
// Reference.get() then going through the normal method entry |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
745 |
// will be fine. |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
746 |
// * The G1 code can, however, check the receiver object (the instance |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
747 |
// of java.lang.Reference) and jump to the slow path if null. If the |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
748 |
// Reference object is null then we obviously cannot fetch the referent |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
749 |
// and so we don't need to call the G1 pre-barrier. Thus we can use the |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
750 |
// regular method entry code to generate the NPE. |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
751 |
// |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
752 |
// This code is based on generate_accessor_enty. |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
753 |
|
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
754 |
address entry = __ pc(); |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
755 |
|
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
756 |
const int referent_offset = java_lang_ref_Reference::referent_offset; |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
757 |
guarantee(referent_offset > 0, "referent offset not initialized"); |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
758 |
|
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
759 |
if (UseG1GC) { |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
760 |
Label slow_path; |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
761 |
|
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
762 |
// In the G1 code we don't check if we need to reach a safepoint. We |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
763 |
// continue and the thread will safepoint at the next bytecode dispatch. |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
764 |
|
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
765 |
// Check if local 0 != NULL |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
766 |
// If the receiver is null then it is OK to jump to the slow path. |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
767 |
__ ld_ptr(Gargs, G0, Otos_i ); // get local 0 |
10252 | 768 |
// check if local 0 == NULL and go the slow path |
769 |
__ cmp_and_brx_short(Otos_i, 0, Assembler::equal, Assembler::pn, slow_path); |
|
9176
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
770 |
|
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
771 |
|
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
772 |
// Load the value of the referent field. |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
773 |
if (Assembler::is_simm13(referent_offset)) { |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
774 |
__ load_heap_oop(Otos_i, referent_offset, Otos_i); |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
775 |
} else { |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
776 |
__ set(referent_offset, G3_scratch); |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
777 |
__ load_heap_oop(Otos_i, G3_scratch, Otos_i); |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
778 |
} |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
779 |
|
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
780 |
// Generate the G1 pre-barrier code to log the value of |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
781 |
// the referent field in an SATB buffer. Note with |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
782 |
// these parameters the pre-barrier does not generate |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
783 |
// the load of the previous value |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
784 |
|
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
785 |
__ g1_write_barrier_pre(noreg /* obj */, noreg /* index */, 0 /* offset */, |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
786 |
Otos_i /* pre_val */, |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
787 |
G3_scratch /* tmp */, |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
788 |
true /* preserve_o_regs */); |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
789 |
|
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
790 |
// _areturn |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
791 |
__ retl(); // return from leaf routine |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
792 |
__ delayed()->mov(O5_savedSP, SP); |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
793 |
|
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
794 |
// Generate regular method entry |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
795 |
__ bind(slow_path); |
33070
54f3f085b165
8136525: Generate interpreter entries only once and avoid unnecessary jump to jump
mdoerr
parents:
31790
diff
changeset
|
796 |
__ jump_to_entry(Interpreter::entry_for_kind(Interpreter::zerolocals)); |
9176
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
797 |
return entry; |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
798 |
} |
15482
470d0b0c09f1
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
15116
diff
changeset
|
799 |
#endif // INCLUDE_ALL_GCS |
9176
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
800 |
|
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
801 |
// If G1 is not enabled then attempt to go through the accessor entry point |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
802 |
// Reference.get is an accessor |
33070
54f3f085b165
8136525: Generate interpreter entries only once and avoid unnecessary jump to jump
mdoerr
parents:
31790
diff
changeset
|
803 |
return NULL; |
9176
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
804 |
} |
42d9d1010f38
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
7889
diff
changeset
|
805 |
|
34205 | 806 |
/** |
807 |
* Method entry for static native methods: |
|
808 |
* int java.util.zip.CRC32.update(int crc, int b) |
|
809 |
*/ |
|
810 |
address InterpreterGenerator::generate_CRC32_update_entry() { |
|
811 |
||
812 |
if (UseCRC32Intrinsics) { |
|
813 |
address entry = __ pc(); |
|
814 |
||
815 |
Label L_slow_path; |
|
816 |
// If we need a safepoint check, generate full interpreter entry. |
|
817 |
ExternalAddress state(SafepointSynchronize::address_of_state()); |
|
818 |
__ set(ExternalAddress(SafepointSynchronize::address_of_state()), O2); |
|
819 |
__ set(SafepointSynchronize::_not_synchronized, O3); |
|
820 |
__ cmp_and_br_short(O2, O3, Assembler::notEqual, Assembler::pt, L_slow_path); |
|
821 |
||
822 |
// Load parameters |
|
823 |
const Register crc = O0; // initial crc |
|
824 |
const Register val = O1; // byte to update with |
|
825 |
const Register table = O2; // address of 256-entry lookup table |
|
826 |
||
827 |
__ ldub(Gargs, 3, val); |
|
828 |
__ lduw(Gargs, 8, crc); |
|
829 |
||
830 |
__ set(ExternalAddress(StubRoutines::crc_table_addr()), table); |
|
831 |
||
832 |
__ not1(crc); // ~crc |
|
833 |
__ clruwu(crc); |
|
834 |
__ update_byte_crc32(crc, val, table); |
|
835 |
__ not1(crc); // ~crc |
|
836 |
||
837 |
// result in O0 |
|
838 |
__ retl(); |
|
839 |
__ delayed()->nop(); |
|
840 |
||
841 |
// generate a vanilla native entry as the slow path |
|
842 |
__ bind(L_slow_path); |
|
843 |
__ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native)); |
|
844 |
return entry; |
|
845 |
} |
|
846 |
return NULL; |
|
847 |
} |
|
848 |
||
849 |
/** |
|
850 |
* Method entry for static native methods: |
|
851 |
* int java.util.zip.CRC32.updateBytes(int crc, byte[] b, int off, int len) |
|
852 |
* int java.util.zip.CRC32.updateByteBuffer(int crc, long buf, int off, int len) |
|
853 |
*/ |
|
854 |
address InterpreterGenerator::generate_CRC32_updateBytes_entry(AbstractInterpreter::MethodKind kind) { |
|
855 |
||
856 |
if (UseCRC32Intrinsics) { |
|
857 |
address entry = __ pc(); |
|
858 |
||
859 |
Label L_slow_path; |
|
860 |
// If we need a safepoint check, generate full interpreter entry. |
|
861 |
ExternalAddress state(SafepointSynchronize::address_of_state()); |
|
862 |
__ set(ExternalAddress(SafepointSynchronize::address_of_state()), O2); |
|
863 |
__ set(SafepointSynchronize::_not_synchronized, O3); |
|
864 |
__ cmp_and_br_short(O2, O3, Assembler::notEqual, Assembler::pt, L_slow_path); |
|
865 |
||
866 |
// Load parameters from the stack |
|
867 |
const Register crc = O0; // initial crc |
|
868 |
const Register buf = O1; // source java byte array address |
|
869 |
const Register len = O2; // len |
|
870 |
const Register offset = O3; // offset |
|
871 |
||
872 |
// Arguments are reversed on java expression stack |
|
873 |
// Calculate address of start element |
|
874 |
if (kind == Interpreter::java_util_zip_CRC32_updateByteBuffer) { |
|
875 |
__ lduw(Gargs, 0, len); |
|
876 |
__ lduw(Gargs, 8, offset); |
|
877 |
__ ldx( Gargs, 16, buf); |
|
878 |
__ lduw(Gargs, 32, crc); |
|
879 |
__ add(buf, offset, buf); |
|
880 |
} else { |
|
881 |
__ lduw(Gargs, 0, len); |
|
882 |
__ lduw(Gargs, 8, offset); |
|
883 |
__ ldx( Gargs, 16, buf); |
|
884 |
__ lduw(Gargs, 24, crc); |
|
885 |
__ add(buf, arrayOopDesc::base_offset_in_bytes(T_BYTE), buf); // account for the header size |
|
886 |
__ add(buf ,offset, buf); |
|
887 |
} |
|
888 |
||
889 |
// Call the crc32 kernel |
|
890 |
__ MacroAssembler::save_thread(L7_thread_cache); |
|
891 |
__ kernel_crc32(crc, buf, len, O3); |
|
892 |
__ MacroAssembler::restore_thread(L7_thread_cache); |
|
893 |
||
894 |
// result in O0 |
|
895 |
__ retl(); |
|
896 |
__ delayed()->nop(); |
|
897 |
||
898 |
// generate a vanilla native entry as the slow path |
|
899 |
__ bind(L_slow_path); |
|
900 |
__ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native)); |
|
901 |
return entry; |
|
902 |
} |
|
903 |
return NULL; |
|
904 |
} |
|
905 |
||
1 | 906 |
// |
907 |
// Interpreter stub for calling a native method. (asm interpreter) |
|
908 |
// This sets up a somewhat different looking stack for calling the native method |
|
909 |
// than the typical interpreter frame setup. |
|
910 |
// |
|
911 |
||
912 |
address InterpreterGenerator::generate_native_entry(bool synchronized) { |
|
913 |
address entry = __ pc(); |
|
914 |
||
915 |
// the following temporary registers are used during frame creation |
|
916 |
const Register Gtmp1 = G3_scratch ; |
|
917 |
const Register Gtmp2 = G1_scratch; |
|
31790 | 918 |
bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods; |
1 | 919 |
|
920 |
// make sure registers are different! |
|
921 |
assert_different_registers(G2_thread, G5_method, Gargs, Gtmp1, Gtmp2); |
|
922 |
||
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
923 |
const Address Laccess_flags(Lmethod, Method::access_flags_offset()); |
1 | 924 |
|
925 |
const Register Glocals_size = G3; |
|
926 |
assert_different_registers(Glocals_size, G4_scratch, Gframe_size); |
|
927 |
||
928 |
// make sure method is native & not abstract |
|
929 |
// rethink these assertions - they can be simplified and shared (gri 2/25/2000) |
|
930 |
#ifdef ASSERT |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
931 |
__ ld(G5_method, Method::access_flags_offset(), Gtmp1); |
1 | 932 |
{ |
933 |
Label L; |
|
934 |
__ btst(JVM_ACC_NATIVE, Gtmp1); |
|
935 |
__ br(Assembler::notZero, false, Assembler::pt, L); |
|
936 |
__ delayed()->nop(); |
|
937 |
__ stop("tried to execute non-native method as native"); |
|
938 |
__ bind(L); |
|
939 |
} |
|
940 |
{ Label L; |
|
941 |
__ btst(JVM_ACC_ABSTRACT, Gtmp1); |
|
942 |
__ br(Assembler::zero, false, Assembler::pt, L); |
|
943 |
__ delayed()->nop(); |
|
944 |
__ stop("tried to execute abstract method as non-abstract"); |
|
945 |
__ bind(L); |
|
946 |
} |
|
947 |
#endif // ASSERT |
|
948 |
||
949 |
// generate the code to allocate the interpreter stack frame |
|
950 |
generate_fixed_frame(true); |
|
951 |
||
952 |
// |
|
953 |
// No locals to initialize for native method |
|
954 |
// |
|
955 |
||
956 |
// this slot will be set later, we initialize it to null here just in |
|
957 |
// case we get a GC before the actual value is stored later |
|
2571 | 958 |
__ st_ptr(G0, FP, (frame::interpreter_frame_oop_temp_offset * wordSize) + STACK_BIAS); |
1 | 959 |
|
2571 | 960 |
const Address do_not_unlock_if_synchronized(G2_thread, |
961 |
JavaThread::do_not_unlock_if_synchronized_offset()); |
|
1 | 962 |
// Since at this point in the method invocation the exception handler |
963 |
// would try to exit the monitor of synchronized methods which hasn't |
|
964 |
// been entered yet, we set the thread local variable |
|
965 |
// _do_not_unlock_if_synchronized to true. If any exception was thrown by |
|
966 |
// runtime, exception handling i.e. unlock_if_synchronized_method will |
|
967 |
// check this thread local flag. |
|
968 |
// This flag has two effects, one is to force an unwind in the topmost |
|
969 |
// interpreter frame and not perform an unlock while doing so. |
|
970 |
||
971 |
__ movbool(true, G3_scratch); |
|
972 |
__ stbool(G3_scratch, do_not_unlock_if_synchronized); |
|
973 |
||
974 |
// increment invocation counter and check for overflow |
|
975 |
// |
|
976 |
// Note: checking for negative value instead of overflow |
|
977 |
// so we have a 'sticky' overflow test (may be of |
|
978 |
// importance as soon as we have true MT/MP) |
|
979 |
Label invocation_counter_overflow; |
|
980 |
Label Lcontinue; |
|
981 |
if (inc_counter) { |
|
982 |
generate_counter_incr(&invocation_counter_overflow, NULL, NULL); |
|
983 |
||
984 |
} |
|
985 |
__ bind(Lcontinue); |
|
986 |
||
987 |
bang_stack_shadow_pages(true); |
|
988 |
||
989 |
// reset the _do_not_unlock_if_synchronized flag |
|
990 |
__ stbool(G0, do_not_unlock_if_synchronized); |
|
991 |
||
992 |
// check for synchronized methods |
|
993 |
// Must happen AFTER invocation_counter check and stack overflow check, |
|
994 |
// so method is not locked if overflows. |
|
995 |
||
996 |
if (synchronized) { |
|
997 |
lock_method(); |
|
998 |
} else { |
|
999 |
#ifdef ASSERT |
|
1000 |
{ Label ok; |
|
1001 |
__ ld(Laccess_flags, O0); |
|
1002 |
__ btst(JVM_ACC_SYNCHRONIZED, O0); |
|
1003 |
__ br( Assembler::zero, false, Assembler::pt, ok); |
|
1004 |
__ delayed()->nop(); |
|
1005 |
__ stop("method needs synchronization"); |
|
1006 |
__ bind(ok); |
|
1007 |
} |
|
1008 |
#endif // ASSERT |
|
1009 |
} |
|
1010 |
||
1011 |
||
1012 |
// start execution |
|
1013 |
__ verify_thread(); |
|
1014 |
||
1015 |
// JVMTI support |
|
1016 |
__ notify_method_entry(); |
|
1017 |
||
1018 |
// native call |
|
1019 |
||
1020 |
// (note that O0 is never an oop--at most it is a handle) |
|
1021 |
// It is important not to smash any handles created by this call, |
|
1022 |
// until any oop handle in O0 is dereferenced. |
|
1023 |
||
1024 |
// (note that the space for outgoing params is preallocated) |
|
1025 |
||
1026 |
// get signature handler |
|
1027 |
{ Label L; |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
1028 |
Address signature_handler(Lmethod, Method::signature_handler_offset()); |
2571 | 1029 |
__ ld_ptr(signature_handler, G3_scratch); |
10252 | 1030 |
__ br_notnull_short(G3_scratch, Assembler::pt, L); |
1 | 1031 |
__ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), Lmethod); |
2571 | 1032 |
__ ld_ptr(signature_handler, G3_scratch); |
1 | 1033 |
__ bind(L); |
1034 |
} |
|
1035 |
||
1036 |
// Push a new frame so that the args will really be stored in |
|
1037 |
// Copy a few locals across so the new frame has the variables |
|
1038 |
// we need but these values will be dead at the jni call and |
|
1039 |
// therefore not gc volatile like the values in the current |
|
1040 |
// frame (Lmethod in particular) |
|
1041 |
||
1042 |
// Flush the method pointer to the register save area |
|
1043 |
__ st_ptr(Lmethod, SP, (Lmethod->sp_offset_in_saved_window() * wordSize) + STACK_BIAS); |
|
1044 |
__ mov(Llocals, O1); |
|
2571 | 1045 |
|
1 | 1046 |
// calculate where the mirror handle body is allocated in the interpreter frame: |
2571 | 1047 |
__ add(FP, (frame::interpreter_frame_oop_temp_offset * wordSize) + STACK_BIAS, O2); |
1 | 1048 |
|
1049 |
// Calculate current frame size |
|
1050 |
__ sub(SP, FP, O3); // Calculate negative of current frame size |
|
1051 |
__ save(SP, O3, SP); // Allocate an identical sized frame |
|
1052 |
||
1053 |
// Note I7 has leftover trash. Slow signature handler will fill it in |
|
1054 |
// should we get there. Normal jni call will set reasonable last_Java_pc |
|
1055 |
// below (and fix I7 so the stack trace doesn't have a meaningless frame |
|
1056 |
// in it). |
|
1057 |
||
1058 |
// Load interpreter frame's Lmethod into same register here |
|
1059 |
||
1060 |
__ ld_ptr(FP, (Lmethod->sp_offset_in_saved_window() * wordSize) + STACK_BIAS, Lmethod); |
|
1061 |
||
1062 |
__ mov(I1, Llocals); |
|
1063 |
__ mov(I2, Lscratch2); // save the address of the mirror |
|
1064 |
||
1065 |
||
1066 |
// ONLY Lmethod and Llocals are valid here! |
|
1067 |
||
1068 |
// call signature handler, It will move the arg properly since Llocals in current frame |
|
1069 |
// matches that in outer frame |
|
1070 |
||
1071 |
__ callr(G3_scratch, 0); |
|
1072 |
__ delayed()->nop(); |
|
1073 |
||
1074 |
// Result handler is in Lscratch |
|
1075 |
||
1076 |
// Reload interpreter frame's Lmethod since slow signature handler may block |
|
1077 |
__ ld_ptr(FP, (Lmethod->sp_offset_in_saved_window() * wordSize) + STACK_BIAS, Lmethod); |
|
1078 |
||
1079 |
{ Label not_static; |
|
1080 |
||
1081 |
__ ld(Laccess_flags, O0); |
|
1082 |
__ btst(JVM_ACC_STATIC, O0); |
|
1083 |
__ br( Assembler::zero, false, Assembler::pt, not_static); |
|
2571 | 1084 |
// get native function entry point(O0 is a good temp until the very end) |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
1085 |
__ delayed()->ld_ptr(Lmethod, in_bytes(Method::native_function_offset()), O0); |
1 | 1086 |
// for static methods insert the mirror argument |
11430
718fc06da49a
7118863: Move sizeof(klassOopDesc) into the *Klass::*_offset_in_bytes() functions
stefank
parents:
10252
diff
changeset
|
1087 |
const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
1 | 1088 |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
1089 |
__ ld_ptr(Lmethod, Method:: const_offset(), O1); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
1090 |
__ ld_ptr(O1, ConstMethod::constants_offset(), O1); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
1091 |
__ ld_ptr(O1, ConstantPool::pool_holder_offset_in_bytes(), O1); |
1 | 1092 |
__ ld_ptr(O1, mirror_offset, O1); |
1093 |
#ifdef ASSERT |
|
1094 |
if (!PrintSignatureHandlers) // do not dirty the output with this |
|
1095 |
{ Label L; |
|
10252 | 1096 |
__ br_notnull_short(O1, Assembler::pt, L); |
1 | 1097 |
__ stop("mirror is missing"); |
1098 |
__ bind(L); |
|
1099 |
} |
|
1100 |
#endif // ASSERT |
|
1101 |
__ st_ptr(O1, Lscratch2, 0); |
|
1102 |
__ mov(Lscratch2, O1); |
|
1103 |
__ bind(not_static); |
|
1104 |
} |
|
1105 |
||
1106 |
// At this point, arguments have been copied off of stack into |
|
1107 |
// their JNI positions, which are O1..O5 and SP[68..]. |
|
1108 |
// Oops are boxed in-place on the stack, with handles copied to arguments. |
|
1109 |
// The result handler is in Lscratch. O0 will shortly hold the JNIEnv*. |
|
1110 |
||
1111 |
#ifdef ASSERT |
|
1112 |
{ Label L; |
|
10252 | 1113 |
__ br_notnull_short(O0, Assembler::pt, L); |
1 | 1114 |
__ stop("native entry point is missing"); |
1115 |
__ bind(L); |
|
1116 |
} |
|
1117 |
#endif // ASSERT |
|
1118 |
||
1119 |
// |
|
1120 |
// setup the frame anchor |
|
1121 |
// |
|
1122 |
// The scavenge function only needs to know that the PC of this frame is |
|
1123 |
// in the interpreter method entry code, it doesn't need to know the exact |
|
1124 |
// PC and hence we can use O7 which points to the return address from the |
|
1125 |
// previous call in the code stream (signature handler function) |
|
1126 |
// |
|
1127 |
// The other trick is we set last_Java_sp to FP instead of the usual SP because |
|
1128 |
// we have pushed the extra frame in order to protect the volatile register(s) |
|
1129 |
// in that frame when we return from the jni call |
|
1130 |
// |
|
1131 |
||
1132 |
__ set_last_Java_frame(FP, O7); |
|
1133 |
__ mov(O7, I7); // make dummy interpreter frame look like one above, |
|
1134 |
// not meaningless information that'll confuse me. |
|
1135 |
||
1136 |
// flush the windows now. We don't care about the current (protection) frame |
|
1137 |
// only the outer frames |
|
1138 |
||
18097 | 1139 |
__ flushw(); |
1 | 1140 |
|
1141 |
// mark windows as flushed |
|
2571 | 1142 |
Address flags(G2_thread, JavaThread::frame_anchor_offset() + JavaFrameAnchor::flags_offset()); |
1 | 1143 |
__ set(JavaFrameAnchor::flushed, G3_scratch); |
1144 |
__ st(G3_scratch, flags); |
|
1145 |
||
1146 |
// Transition from _thread_in_Java to _thread_in_native. We are already safepoint ready. |
|
1147 |
||
2571 | 1148 |
Address thread_state(G2_thread, JavaThread::thread_state_offset()); |
1 | 1149 |
#ifdef ASSERT |
1150 |
{ Label L; |
|
1151 |
__ ld(thread_state, G3_scratch); |
|
10252 | 1152 |
__ cmp_and_br_short(G3_scratch, _thread_in_Java, Assembler::equal, Assembler::pt, L); |
1 | 1153 |
__ stop("Wrong thread state in native stub"); |
1154 |
__ bind(L); |
|
1155 |
} |
|
1156 |
#endif // ASSERT |
|
1157 |
__ set(_thread_in_native, G3_scratch); |
|
1158 |
__ st(G3_scratch, thread_state); |
|
1159 |
||
1160 |
// Call the jni method, using the delay slot to set the JNIEnv* argument. |
|
1161 |
__ save_thread(L7_thread_cache); // save Gthread |
|
1162 |
__ callr(O0, 0); |
|
1163 |
__ delayed()-> |
|
1164 |
add(L7_thread_cache, in_bytes(JavaThread::jni_environment_offset()), O0); |
|
1165 |
||
1166 |
// Back from jni method Lmethod in this frame is DEAD, DEAD, DEAD |
|
1167 |
||
1168 |
__ restore_thread(L7_thread_cache); // restore G2_thread |
|
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
1169 |
__ reinit_heapbase(); |
1 | 1170 |
|
1171 |
// must we block? |
|
1172 |
||
1173 |
// Block, if necessary, before resuming in _thread_in_Java state. |
|
1174 |
// In order for GC to work, don't clear the last_Java_sp until after blocking. |
|
1175 |
{ Label no_block; |
|
2571 | 1176 |
AddressLiteral sync_state(SafepointSynchronize::address_of_state()); |
1 | 1177 |
|
1178 |
// Switch thread to "native transition" state before reading the synchronization state. |
|
1179 |
// This additional state is necessary because reading and testing the synchronization |
|
1180 |
// state is not atomic w.r.t. GC, as this scenario demonstrates: |
|
1181 |
// Java thread A, in _thread_in_native state, loads _not_synchronized and is preempted. |
|
1182 |
// VM thread changes sync state to synchronizing and suspends threads for GC. |
|
1183 |
// Thread A is resumed to finish this native method, but doesn't block here since it |
|
1184 |
// didn't see any synchronization is progress, and escapes. |
|
1185 |
__ set(_thread_in_native_trans, G3_scratch); |
|
1186 |
__ st(G3_scratch, thread_state); |
|
1187 |
if(os::is_MP()) { |
|
1188 |
if (UseMembar) { |
|
1189 |
// Force this write out before the read below |
|
1190 |
__ membar(Assembler::StoreLoad); |
|
1191 |
} else { |
|
1192 |
// Write serialization page so VM thread can do a pseudo remote membar. |
|
1193 |
// We use the current thread pointer to calculate a thread specific |
|
1194 |
// offset to write to within the page. This minimizes bus traffic |
|
1195 |
// due to cache line collision. |
|
1196 |
__ serialize_memory(G2_thread, G1_scratch, G3_scratch); |
|
1197 |
} |
|
1198 |
} |
|
1199 |
__ load_contents(sync_state, G3_scratch); |
|
1200 |
__ cmp(G3_scratch, SafepointSynchronize::_not_synchronized); |
|
1201 |
||
1202 |
Label L; |
|
1203 |
__ br(Assembler::notEqual, false, Assembler::pn, L); |
|
2571 | 1204 |
__ delayed()->ld(G2_thread, JavaThread::suspend_flags_offset(), G3_scratch); |
10252 | 1205 |
__ cmp_and_br_short(G3_scratch, 0, Assembler::equal, Assembler::pt, no_block); |
1 | 1206 |
__ bind(L); |
1207 |
||
1208 |
// Block. Save any potential method result value before the operation and |
|
1209 |
// use a leaf call to leave the last_Java_frame setup undisturbed. |
|
1210 |
save_native_result(); |
|
1211 |
__ call_VM_leaf(L7_thread_cache, |
|
1212 |
CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans), |
|
1213 |
G2_thread); |
|
1214 |
||
1215 |
// Restore any method result value |
|
1216 |
restore_native_result(); |
|
1217 |
__ bind(no_block); |
|
1218 |
} |
|
1219 |
||
1220 |
// Clear the frame anchor now |
|
1221 |
||
1222 |
__ reset_last_Java_frame(); |
|
1223 |
||
1224 |
// Move the result handler address |
|
1225 |
__ mov(Lscratch, G3_scratch); |
|
1226 |
// return possible result to the outer frame |
|
1227 |
#ifndef __LP64 |
|
1228 |
__ mov(O0, I0); |
|
1229 |
__ restore(O1, G0, O1); |
|
1230 |
#else |
|
1231 |
__ restore(O0, G0, O0); |
|
1232 |
#endif /* __LP64 */ |
|
1233 |
||
1234 |
// Move result handler to expected register |
|
1235 |
__ mov(G3_scratch, Lscratch); |
|
1236 |
||
1237 |
// Back in normal (native) interpreter frame. State is thread_in_native_trans |
|
1238 |
// switch to thread_in_Java. |
|
1239 |
||
1240 |
__ set(_thread_in_Java, G3_scratch); |
|
1241 |
__ st(G3_scratch, thread_state); |
|
1242 |
||
1243 |
// reset handle block |
|
2571 | 1244 |
__ ld_ptr(G2_thread, JavaThread::active_handles_offset(), G3_scratch); |
23844
0c29a324ae14
8039146: Fix 64-bit store to int JNIHandleBlock::_top
goetz
parents:
22504
diff
changeset
|
1245 |
__ st(G0, G3_scratch, JNIHandleBlock::top_offset_in_bytes()); |
1 | 1246 |
|
1247 |
// If we have an oop result store it where it will be safe for any further gc |
|
1248 |
// until we return now that we've released the handle it might be protected by |
|
1249 |
||
1250 |
{ |
|
1251 |
Label no_oop, store_result; |
|
1252 |
||
1253 |
__ set((intptr_t)AbstractInterpreter::result_handler(T_OBJECT), G3_scratch); |
|
10252 | 1254 |
__ cmp_and_brx_short(G3_scratch, Lscratch, Assembler::notEqual, Assembler::pt, no_oop); |
1 | 1255 |
__ addcc(G0, O0, O0); |
1256 |
__ brx(Assembler::notZero, true, Assembler::pt, store_result); // if result is not NULL: |
|
1257 |
__ delayed()->ld_ptr(O0, 0, O0); // unbox it |
|
1258 |
__ mov(G0, O0); |
|
1259 |
||
1260 |
__ bind(store_result); |
|
1261 |
// Store it where gc will look for it and result handler expects it. |
|
1262 |
__ st_ptr(O0, FP, (frame::interpreter_frame_oop_temp_offset*wordSize) + STACK_BIAS); |
|
1263 |
||
1264 |
__ bind(no_oop); |
|
1265 |
||
1266 |
} |
|
1267 |
||
1268 |
||
1269 |
// handle exceptions (exception handling will handle unlocking!) |
|
1270 |
{ Label L; |
|
2571 | 1271 |
Address exception_addr(G2_thread, Thread::pending_exception_offset()); |
1 | 1272 |
__ ld_ptr(exception_addr, Gtemp); |
10252 | 1273 |
__ br_null_short(Gtemp, Assembler::pt, L); |
1 | 1274 |
// Note: This could be handled more efficiently since we know that the native |
1275 |
// method doesn't have an exception handler. We could directly return |
|
1276 |
// to the exception handler for the caller. |
|
1277 |
__ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception)); |
|
1278 |
__ should_not_reach_here(); |
|
1279 |
__ bind(L); |
|
1280 |
} |
|
1281 |
||
1282 |
// JVMTI support (preserves thread register) |
|
1283 |
__ notify_method_exit(true, ilgl, InterpreterMacroAssembler::NotifyJVMTI); |
|
1284 |
||
1285 |
if (synchronized) { |
|
1286 |
// save and restore any potential method result value around the unlocking operation |
|
1287 |
save_native_result(); |
|
1288 |
||
1289 |
__ add( __ top_most_monitor(), O1); |
|
1290 |
__ unlock_object(O1); |
|
1291 |
||
1292 |
restore_native_result(); |
|
1293 |
} |
|
1294 |
||
1295 |
#if defined(COMPILER2) && !defined(_LP64) |
|
1296 |
||
1297 |
// C2 expects long results in G1 we can't tell if we're returning to interpreted |
|
1298 |
// or compiled so just be safe. |
|
1299 |
||
1300 |
__ sllx(O0, 32, G1); // Shift bits into high G1 |
|
1301 |
__ srl (O1, 0, O1); // Zero extend O1 |
|
1302 |
__ or3 (O1, G1, G1); // OR 64 bits into G1 |
|
1303 |
||
1304 |
#endif /* COMPILER2 && !_LP64 */ |
|
1305 |
||
1306 |
// dispose of return address and remove activation |
|
1307 |
#ifdef ASSERT |
|
1308 |
{ |
|
1309 |
Label ok; |
|
10252 | 1310 |
__ cmp_and_brx_short(I5_savedSP, FP, Assembler::greaterEqualUnsigned, Assembler::pt, ok); |
1 | 1311 |
__ stop("bad I5_savedSP value"); |
1312 |
__ should_not_reach_here(); |
|
1313 |
__ bind(ok); |
|
1314 |
} |
|
1315 |
#endif |
|
1316 |
if (TraceJumps) { |
|
1317 |
// Move target to register that is recordable |
|
1318 |
__ mov(Lscratch, G3_scratch); |
|
1319 |
__ JMP(G3_scratch, 0); |
|
1320 |
} else { |
|
1321 |
__ jmp(Lscratch, 0); |
|
1322 |
} |
|
1323 |
__ delayed()->nop(); |
|
1324 |
||
1325 |
||
1326 |
if (inc_counter) { |
|
1327 |
// handle invocation counter overflow |
|
1328 |
__ bind(invocation_counter_overflow); |
|
1329 |
generate_counter_overflow(Lcontinue); |
|
1330 |
} |
|
1331 |
||
1332 |
||
1333 |
||
1334 |
return entry; |
|
1335 |
} |
|
1336 |
||
1337 |
||
1338 |
// Generic method entry to (asm) interpreter |
|
1339 |
address InterpreterGenerator::generate_normal_entry(bool synchronized) { |
|
1340 |
address entry = __ pc(); |
|
1341 |
||
31790 | 1342 |
bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods; |
1 | 1343 |
|
1344 |
// the following temporary registers are used during frame creation |
|
1345 |
const Register Gtmp1 = G3_scratch ; |
|
1346 |
const Register Gtmp2 = G1_scratch; |
|
1347 |
||
1348 |
// make sure registers are different! |
|
1349 |
assert_different_registers(G2_thread, G5_method, Gargs, Gtmp1, Gtmp2); |
|
1350 |
||
14745
03904dd8649b
8004076: Move _max_locals and _size_of_parameters to ConstMethod for better sharing.
jiangli
parents:
14633
diff
changeset
|
1351 |
const Address constMethod (G5_method, Method::const_offset()); |
1 | 1352 |
// Seems like G5_method is live at the point this is used. So we could make this look consistent |
1353 |
// and use in the asserts. |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
1354 |
const Address access_flags (Lmethod, Method::access_flags_offset()); |
1 | 1355 |
|
1356 |
const Register Glocals_size = G3; |
|
1357 |
assert_different_registers(Glocals_size, G4_scratch, Gframe_size); |
|
1358 |
||
1359 |
// make sure method is not native & not abstract |
|
1360 |
// rethink these assertions - they can be simplified and shared (gri 2/25/2000) |
|
1361 |
#ifdef ASSERT |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
1362 |
__ ld(G5_method, Method::access_flags_offset(), Gtmp1); |
1 | 1363 |
{ |
1364 |
Label L; |
|
1365 |
__ btst(JVM_ACC_NATIVE, Gtmp1); |
|
1366 |
__ br(Assembler::zero, false, Assembler::pt, L); |
|
1367 |
__ delayed()->nop(); |
|
1368 |
__ stop("tried to execute native method as non-native"); |
|
1369 |
__ bind(L); |
|
1370 |
} |
|
1371 |
{ Label L; |
|
1372 |
__ btst(JVM_ACC_ABSTRACT, Gtmp1); |
|
1373 |
__ br(Assembler::zero, false, Assembler::pt, L); |
|
1374 |
__ delayed()->nop(); |
|
1375 |
__ stop("tried to execute abstract method as non-abstract"); |
|
1376 |
__ bind(L); |
|
1377 |
} |
|
1378 |
#endif // ASSERT |
|
1379 |
||
1380 |
// generate the code to allocate the interpreter stack frame |
|
1381 |
||
1382 |
generate_fixed_frame(false); |
|
1383 |
||
1384 |
#ifdef FAST_DISPATCH |
|
1385 |
__ set((intptr_t)Interpreter::dispatch_table(), IdispatchTables); |
|
1386 |
// set bytecode dispatch table base |
|
1387 |
#endif |
|
1388 |
||
1389 |
// |
|
1390 |
// Code to initialize the extra (i.e. non-parm) locals |
|
1391 |
// |
|
1392 |
Register init_value = noreg; // will be G0 if we must clear locals |
|
1393 |
// The way the code was setup before zerolocals was always true for vanilla java entries. |
|
1394 |
// It could only be false for the specialized entries like accessor or empty which have |
|
1395 |
// no extra locals so the testing was a waste of time and the extra locals were always |
|
1396 |
// initialized. We removed this extra complication to already over complicated code. |
|
1397 |
||
1398 |
init_value = G0; |
|
1399 |
Label clear_loop; |
|
1400 |
||
14745
03904dd8649b
8004076: Move _max_locals and _size_of_parameters to ConstMethod for better sharing.
jiangli
parents:
14633
diff
changeset
|
1401 |
const Register RconstMethod = O1; |
03904dd8649b
8004076: Move _max_locals and _size_of_parameters to ConstMethod for better sharing.
jiangli
parents:
14633
diff
changeset
|
1402 |
const Address size_of_parameters(RconstMethod, ConstMethod::size_of_parameters_offset()); |
03904dd8649b
8004076: Move _max_locals and _size_of_parameters to ConstMethod for better sharing.
jiangli
parents:
14633
diff
changeset
|
1403 |
const Address size_of_locals (RconstMethod, ConstMethod::size_of_locals_offset()); |
03904dd8649b
8004076: Move _max_locals and _size_of_parameters to ConstMethod for better sharing.
jiangli
parents:
14633
diff
changeset
|
1404 |
|
1 | 1405 |
// NOTE: If you change the frame layout, this code will need to |
1406 |
// be updated! |
|
14745
03904dd8649b
8004076: Move _max_locals and _size_of_parameters to ConstMethod for better sharing.
jiangli
parents:
14633
diff
changeset
|
1407 |
__ ld_ptr( constMethod, RconstMethod ); |
1 | 1408 |
__ lduh( size_of_locals, O2 ); |
1409 |
__ lduh( size_of_parameters, O1 ); |
|
5419 | 1410 |
__ sll( O2, Interpreter::logStackElementSize, O2); |
1411 |
__ sll( O1, Interpreter::logStackElementSize, O1 ); |
|
1 | 1412 |
__ sub( Llocals, O2, O2 ); |
1413 |
__ sub( Llocals, O1, O1 ); |
|
1414 |
||
1415 |
__ bind( clear_loop ); |
|
1416 |
__ inc( O2, wordSize ); |
|
1417 |
||
1418 |
__ cmp( O2, O1 ); |
|
1419 |
__ brx( Assembler::lessEqualUnsigned, true, Assembler::pt, clear_loop ); |
|
1420 |
__ delayed()->st_ptr( init_value, O2, 0 ); |
|
1421 |
||
2571 | 1422 |
const Address do_not_unlock_if_synchronized(G2_thread, |
1423 |
JavaThread::do_not_unlock_if_synchronized_offset()); |
|
1 | 1424 |
// Since at this point in the method invocation the exception handler |
1425 |
// would try to exit the monitor of synchronized methods which hasn't |
|
1426 |
// been entered yet, we set the thread local variable |
|
1427 |
// _do_not_unlock_if_synchronized to true. If any exception was thrown by |
|
1428 |
// runtime, exception handling i.e. unlock_if_synchronized_method will |
|
1429 |
// check this thread local flag. |
|
1430 |
__ movbool(true, G3_scratch); |
|
1431 |
__ stbool(G3_scratch, do_not_unlock_if_synchronized); |
|
1432 |
||
22504 | 1433 |
__ profile_parameters_type(G1_scratch, G3_scratch, G4_scratch, Lscratch); |
1 | 1434 |
// increment invocation counter and check for overflow |
1435 |
// |
|
1436 |
// Note: checking for negative value instead of overflow |
|
1437 |
// so we have a 'sticky' overflow test (may be of |
|
1438 |
// importance as soon as we have true MT/MP) |
|
1439 |
Label invocation_counter_overflow; |
|
1440 |
Label profile_method; |
|
1441 |
Label profile_method_continue; |
|
1442 |
Label Lcontinue; |
|
1443 |
if (inc_counter) { |
|
1444 |
generate_counter_incr(&invocation_counter_overflow, &profile_method, &profile_method_continue); |
|
1445 |
if (ProfileInterpreter) { |
|
1446 |
__ bind(profile_method_continue); |
|
1447 |
} |
|
1448 |
} |
|
1449 |
__ bind(Lcontinue); |
|
1450 |
||
1451 |
bang_stack_shadow_pages(false); |
|
1452 |
||
1453 |
// reset the _do_not_unlock_if_synchronized flag |
|
1454 |
__ stbool(G0, do_not_unlock_if_synchronized); |
|
1455 |
||
1456 |
// check for synchronized methods |
|
1457 |
// Must happen AFTER invocation_counter check and stack overflow check, |
|
1458 |
// so method is not locked if overflows. |
|
1459 |
||
1460 |
if (synchronized) { |
|
1461 |
lock_method(); |
|
1462 |
} else { |
|
1463 |
#ifdef ASSERT |
|
1464 |
{ Label ok; |
|
1465 |
__ ld(access_flags, O0); |
|
1466 |
__ btst(JVM_ACC_SYNCHRONIZED, O0); |
|
1467 |
__ br( Assembler::zero, false, Assembler::pt, ok); |
|
1468 |
__ delayed()->nop(); |
|
1469 |
__ stop("method needs synchronization"); |
|
1470 |
__ bind(ok); |
|
1471 |
} |
|
1472 |
#endif // ASSERT |
|
1473 |
} |
|
1474 |
||
1475 |
// start execution |
|
1476 |
||
1477 |
__ verify_thread(); |
|
1478 |
||
1479 |
// jvmti support |
|
1480 |
__ notify_method_entry(); |
|
1481 |
||
1482 |
// start executing instructions |
|
1483 |
__ dispatch_next(vtos); |
|
1484 |
||
1485 |
||
1486 |
if (inc_counter) { |
|
1487 |
if (ProfileInterpreter) { |
|
1488 |
// We have decided to profile this method in the interpreter |
|
1489 |
__ bind(profile_method); |
|
1490 |
||
7889
02144432d0e1
4930919: race condition in MDO creation at back branch locations
iveresov
parents:
7397
diff
changeset
|
1491 |
__ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
02144432d0e1
4930919: race condition in MDO creation at back branch locations
iveresov
parents:
7397
diff
changeset
|
1492 |
__ set_method_data_pointer_for_bcp(); |
10252 | 1493 |
__ ba_short(profile_method_continue); |
1 | 1494 |
} |
1495 |
||
1496 |
// handle invocation counter overflow |
|
1497 |
__ bind(invocation_counter_overflow); |
|
1498 |
generate_counter_overflow(Lcontinue); |
|
1499 |
} |
|
1500 |
||
1501 |
||
1502 |
return entry; |
|
1503 |
} |
|
1504 |
||
1505 |
//---------------------------------------------------------------------------------------------------- |
|
1506 |
// Exceptions |
|
1507 |
void TemplateInterpreterGenerator::generate_throw_exception() { |
|
1508 |
||
1509 |
// Entry point in previous activation (i.e., if the caller was interpreted) |
|
1510 |
Interpreter::_rethrow_exception_entry = __ pc(); |
|
1511 |
// O0: exception |
|
1512 |
||
1513 |
// entry point for exceptions thrown within interpreter code |
|
1514 |
Interpreter::_throw_exception_entry = __ pc(); |
|
1515 |
__ verify_thread(); |
|
1516 |
// expression stack is undefined here |
|
1517 |
// O0: exception, i.e. Oexception |
|
25714
87fa6860b5ae
8004128: NPG: remove stackwalking in Threads::gc_prologue and gc_epilogue code
coleenp
parents:
24917
diff
changeset
|
1518 |
// Lbcp: exception bcp |
1 | 1519 |
__ verify_oop(Oexception); |
1520 |
||
1521 |
||
1522 |
// expression stack must be empty before entering the VM in case of an exception |
|
1523 |
__ empty_expression_stack(); |
|
1524 |
// find exception handler address and preserve exception oop |
|
1525 |
// call C routine to find handler and jump to it |
|
1526 |
__ call_VM(O1, CAST_FROM_FN_PTR(address, InterpreterRuntime::exception_handler_for_exception), Oexception); |
|
1527 |
__ push_ptr(O1); // push exception for exception handler bytecodes |
|
1528 |
||
1529 |
__ JMP(O0, 0); // jump to exception handler (may be remove activation entry!) |
|
1530 |
__ delayed()->nop(); |
|
1531 |
||
1532 |
||
1533 |
// if the exception is not handled in the current frame |
|
1534 |
// the frame is removed and the exception is rethrown |
|
1535 |
// (i.e. exception continuation is _rethrow_exception) |
|
1536 |
// |
|
1537 |
// Note: At this point the bci is still the bxi for the instruction which caused |
|
1538 |
// the exception and the expression stack is empty. Thus, for any VM calls |
|
1539 |
// at this point, GC will find a legal oop map (with empty expression stack). |
|
1540 |
||
1541 |
// in current activation |
|
1542 |
// tos: exception |
|
1543 |
// Lbcp: exception bcp |
|
1544 |
||
1545 |
// |
|
1546 |
// JVMTI PopFrame support |
|
1547 |
// |
|
1548 |
||
1549 |
Interpreter::_remove_activation_preserving_args_entry = __ pc(); |
|
2571 | 1550 |
Address popframe_condition_addr(G2_thread, JavaThread::popframe_condition_offset()); |
1 | 1551 |
// Set the popframe_processing bit in popframe_condition indicating that we are |
1552 |
// currently handling popframe, so that call_VMs that may happen later do not trigger new |
|
1553 |
// popframe handling cycles. |
|
1554 |
||
1555 |
__ ld(popframe_condition_addr, G3_scratch); |
|
1556 |
__ or3(G3_scratch, JavaThread::popframe_processing_bit, G3_scratch); |
|
1557 |
__ stw(G3_scratch, popframe_condition_addr); |
|
1558 |
||
1559 |
// Empty the expression stack, as in normal exception handling |
|
1560 |
__ empty_expression_stack(); |
|
1561 |
__ unlock_if_synchronized_method(vtos, /* throw_monitor_exception */ false, /* install_monitor_exception */ false); |
|
1562 |
||
1563 |
{ |
|
1564 |
// Check to see whether we are returning to a deoptimized frame. |
|
1565 |
// (The PopFrame call ensures that the caller of the popped frame is |
|
1566 |
// either interpreted or compiled and deoptimizes it if compiled.) |
|
1567 |
// In this case, we can't call dispatch_next() after the frame is |
|
1568 |
// popped, but instead must save the incoming arguments and restore |
|
1569 |
// them after deoptimization has occurred. |
|
1570 |
// |
|
1571 |
// Note that we don't compare the return PC against the |
|
1572 |
// deoptimization blob's unpack entry because of the presence of |
|
1573 |
// adapter frames in C2. |
|
1574 |
Label caller_not_deoptimized; |
|
1575 |
__ call_VM_leaf(L7_thread_cache, CAST_FROM_FN_PTR(address, InterpreterRuntime::interpreter_contains), I7); |
|
10252 | 1576 |
__ br_notnull_short(O0, Assembler::pt, caller_not_deoptimized); |
1 | 1577 |
|
1578 |
const Register Gtmp1 = G3_scratch; |
|
1579 |
const Register Gtmp2 = G1_scratch; |
|
14745
03904dd8649b
8004076: Move _max_locals and _size_of_parameters to ConstMethod for better sharing.
jiangli
parents:
14633
diff
changeset
|
1580 |
const Register RconstMethod = Gtmp1; |
03904dd8649b
8004076: Move _max_locals and _size_of_parameters to ConstMethod for better sharing.
jiangli
parents:
14633
diff
changeset
|
1581 |
const Address constMethod(Lmethod, Method::const_offset()); |
03904dd8649b
8004076: Move _max_locals and _size_of_parameters to ConstMethod for better sharing.
jiangli
parents:
14633
diff
changeset
|
1582 |
const Address size_of_parameters(RconstMethod, ConstMethod::size_of_parameters_offset()); |
1 | 1583 |
|
1584 |
// Compute size of arguments for saving when returning to deoptimized caller |
|
14745
03904dd8649b
8004076: Move _max_locals and _size_of_parameters to ConstMethod for better sharing.
jiangli
parents:
14633
diff
changeset
|
1585 |
__ ld_ptr(constMethod, RconstMethod); |
03904dd8649b
8004076: Move _max_locals and _size_of_parameters to ConstMethod for better sharing.
jiangli
parents:
14633
diff
changeset
|
1586 |
__ lduh(size_of_parameters, Gtmp1); |
5419 | 1587 |
__ sll(Gtmp1, Interpreter::logStackElementSize, Gtmp1); |
1 | 1588 |
__ sub(Llocals, Gtmp1, Gtmp2); |
1589 |
__ add(Gtmp2, wordSize, Gtmp2); |
|
1590 |
// Save these arguments |
|
1591 |
__ call_VM_leaf(L7_thread_cache, CAST_FROM_FN_PTR(address, Deoptimization::popframe_preserve_args), G2_thread, Gtmp1, Gtmp2); |
|
1592 |
// Inform deoptimization that it is responsible for restoring these arguments |
|
1593 |
__ set(JavaThread::popframe_force_deopt_reexecution_bit, Gtmp1); |
|
2571 | 1594 |
Address popframe_condition_addr(G2_thread, JavaThread::popframe_condition_offset()); |
1 | 1595 |
__ st(Gtmp1, popframe_condition_addr); |
1596 |
||
1597 |
// Return from the current method |
|
1598 |
// The caller's SP was adjusted upon method entry to accomodate |
|
1599 |
// the callee's non-argument locals. Undo that adjustment. |
|
1600 |
__ ret(); |
|
1601 |
__ delayed()->restore(I5_savedSP, G0, SP); |
|
1602 |
||
1603 |
__ bind(caller_not_deoptimized); |
|
1604 |
} |
|
1605 |
||
1606 |
// Clear the popframe condition flag |
|
1607 |
__ stw(G0 /* popframe_inactive */, popframe_condition_addr); |
|
1608 |
||
1609 |
// Get out of the current method (how this is done depends on the particular compiler calling |
|
1610 |
// convention that the interpreter currently follows) |
|
1611 |
// The caller's SP was adjusted upon method entry to accomodate |
|
1612 |
// the callee's non-argument locals. Undo that adjustment. |
|
1613 |
__ restore(I5_savedSP, G0, SP); |
|
1614 |
// The method data pointer was incremented already during |
|
1615 |
// call profiling. We have to restore the mdp for the current bcp. |
|
1616 |
if (ProfileInterpreter) { |
|
1617 |
__ set_method_data_pointer_for_bcp(); |
|
1618 |
} |
|
19266
bb0324cbe0aa
7187554: JSR 292: JVMTI PopFrame needs to handle appendix arguments
sspitsyn
parents:
18097
diff
changeset
|
1619 |
|
bb0324cbe0aa
7187554: JSR 292: JVMTI PopFrame needs to handle appendix arguments
sspitsyn
parents:
18097
diff
changeset
|
1620 |
#if INCLUDE_JVMTI |
24322 | 1621 |
{ |
19266
bb0324cbe0aa
7187554: JSR 292: JVMTI PopFrame needs to handle appendix arguments
sspitsyn
parents:
18097
diff
changeset
|
1622 |
Label L_done; |
bb0324cbe0aa
7187554: JSR 292: JVMTI PopFrame needs to handle appendix arguments
sspitsyn
parents:
18097
diff
changeset
|
1623 |
|
bb0324cbe0aa
7187554: JSR 292: JVMTI PopFrame needs to handle appendix arguments
sspitsyn
parents:
18097
diff
changeset
|
1624 |
__ ldub(Address(Lbcp, 0), G1_scratch); // Load current bytecode |
bb0324cbe0aa
7187554: JSR 292: JVMTI PopFrame needs to handle appendix arguments
sspitsyn
parents:
18097
diff
changeset
|
1625 |
__ cmp_and_br_short(G1_scratch, Bytecodes::_invokestatic, Assembler::notEqual, Assembler::pn, L_done); |
bb0324cbe0aa
7187554: JSR 292: JVMTI PopFrame needs to handle appendix arguments
sspitsyn
parents:
18097
diff
changeset
|
1626 |
|
bb0324cbe0aa
7187554: JSR 292: JVMTI PopFrame needs to handle appendix arguments
sspitsyn
parents:
18097
diff
changeset
|
1627 |
// The member name argument must be restored if _invokestatic is re-executed after a PopFrame call. |
bb0324cbe0aa
7187554: JSR 292: JVMTI PopFrame needs to handle appendix arguments
sspitsyn
parents:
18097
diff
changeset
|
1628 |
// Detect such a case in the InterpreterRuntime function and return the member name argument, or NULL. |
bb0324cbe0aa
7187554: JSR 292: JVMTI PopFrame needs to handle appendix arguments
sspitsyn
parents:
18097
diff
changeset
|
1629 |
|
bb0324cbe0aa
7187554: JSR 292: JVMTI PopFrame needs to handle appendix arguments
sspitsyn
parents:
18097
diff
changeset
|
1630 |
__ call_VM(G1_scratch, CAST_FROM_FN_PTR(address, InterpreterRuntime::member_name_arg_or_null), I0, Lmethod, Lbcp); |
bb0324cbe0aa
7187554: JSR 292: JVMTI PopFrame needs to handle appendix arguments
sspitsyn
parents:
18097
diff
changeset
|
1631 |
|
bb0324cbe0aa
7187554: JSR 292: JVMTI PopFrame needs to handle appendix arguments
sspitsyn
parents:
18097
diff
changeset
|
1632 |
__ br_null(G1_scratch, false, Assembler::pn, L_done); |
bb0324cbe0aa
7187554: JSR 292: JVMTI PopFrame needs to handle appendix arguments
sspitsyn
parents:
18097
diff
changeset
|
1633 |
__ delayed()->nop(); |
bb0324cbe0aa
7187554: JSR 292: JVMTI PopFrame needs to handle appendix arguments
sspitsyn
parents:
18097
diff
changeset
|
1634 |
|
bb0324cbe0aa
7187554: JSR 292: JVMTI PopFrame needs to handle appendix arguments
sspitsyn
parents:
18097
diff
changeset
|
1635 |
__ st_ptr(G1_scratch, Lesp, wordSize); |
bb0324cbe0aa
7187554: JSR 292: JVMTI PopFrame needs to handle appendix arguments
sspitsyn
parents:
18097
diff
changeset
|
1636 |
__ bind(L_done); |
bb0324cbe0aa
7187554: JSR 292: JVMTI PopFrame needs to handle appendix arguments
sspitsyn
parents:
18097
diff
changeset
|
1637 |
} |
bb0324cbe0aa
7187554: JSR 292: JVMTI PopFrame needs to handle appendix arguments
sspitsyn
parents:
18097
diff
changeset
|
1638 |
#endif // INCLUDE_JVMTI |
bb0324cbe0aa
7187554: JSR 292: JVMTI PopFrame needs to handle appendix arguments
sspitsyn
parents:
18097
diff
changeset
|
1639 |
|
1 | 1640 |
// Resume bytecode interpretation at the current bcp |
1641 |
__ dispatch_next(vtos); |
|
1642 |
// end of JVMTI PopFrame support |
|
1643 |
||
1644 |
Interpreter::_remove_activation_entry = __ pc(); |
|
1645 |
||
1646 |
// preserve exception over this code sequence (remove activation calls the vm, but oopmaps are not correct here) |
|
1647 |
__ pop_ptr(Oexception); // get exception |
|
1648 |
||
1649 |
// Intel has the following comment: |
|
1650 |
//// remove the activation (without doing throws on illegalMonitorExceptions) |
|
1651 |
// They remove the activation without checking for bad monitor state. |
|
1652 |
// %%% We should make sure this is the right semantics before implementing. |
|
1653 |
||
1654 |
__ set_vm_result(Oexception); |
|
1655 |
__ unlock_if_synchronized_method(vtos, /* throw_monitor_exception */ false); |
|
1656 |
||
1657 |
__ notify_method_exit(false, vtos, InterpreterMacroAssembler::SkipNotifyJVMTI); |
|
1658 |
||
1659 |
__ get_vm_result(Oexception); |
|
1660 |
__ verify_oop(Oexception); |
|
1661 |
||
1662 |
const int return_reg_adjustment = frame::pc_return_offset; |
|
2571 | 1663 |
Address issuing_pc_addr(I7, return_reg_adjustment); |
1 | 1664 |
|
1665 |
// We are done with this activation frame; find out where to go next. |
|
1666 |
// The continuation point will be an exception handler, which expects |
|
1667 |
// the following registers set up: |
|
1668 |
// |
|
1669 |
// Oexception: exception |
|
1670 |
// Oissuing_pc: the local call that threw exception |
|
1671 |
// Other On: garbage |
|
1672 |
// In/Ln: the contents of the caller's register window |
|
1673 |
// |
|
1674 |
// We do the required restore at the last possible moment, because we |
|
1675 |
// need to preserve some state across a runtime call. |
|
1676 |
// (Remember that the caller activation is unknown--it might not be |
|
1677 |
// interpreted, so things like Lscratch are useless in the caller.) |
|
1678 |
||
1679 |
// Although the Intel version uses call_C, we can use the more |
|
1680 |
// compact call_VM. (The only real difference on SPARC is a |
|
1681 |
// harmlessly ignored [re]set_last_Java_frame, compared with |
|
1682 |
// the Intel code which lacks this.) |
|
1683 |
__ mov(Oexception, Oexception ->after_save()); // get exception in I0 so it will be on O0 after restore |
|
1684 |
__ add(issuing_pc_addr, Oissuing_pc->after_save()); // likewise set I1 to a value local to the caller |
|
1685 |
__ super_call_VM_leaf(L7_thread_cache, |
|
1686 |
CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), |
|
5046 | 1687 |
G2_thread, Oissuing_pc->after_save()); |
1 | 1688 |
|
1689 |
// The caller's SP was adjusted upon method entry to accomodate |
|
1690 |
// the callee's non-argument locals. Undo that adjustment. |
|
1691 |
__ JMP(O0, 0); // return exception handler in caller |
|
1692 |
__ delayed()->restore(I5_savedSP, G0, SP); |
|
1693 |
||
1694 |
// (same old exception object is already in Oexception; see above) |
|
1695 |
// Note that an "issuing PC" is actually the next PC after the call |
|
1696 |
} |
|
1697 |
||
1698 |
||
1699 |
// |
|
1700 |
// JVMTI ForceEarlyReturn support |
|
1701 |
// |
|
1702 |
||
1703 |
address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { |
|
1704 |
address entry = __ pc(); |
|
1705 |
||
1706 |
__ empty_expression_stack(); |
|
1707 |
__ load_earlyret_value(state); |
|
1708 |
||
2571 | 1709 |
__ ld_ptr(G2_thread, JavaThread::jvmti_thread_state_offset(), G3_scratch); |
1710 |
Address cond_addr(G3_scratch, JvmtiThreadState::earlyret_state_offset()); |
|
1 | 1711 |
|
1712 |
// Clear the earlyret state |
|
1713 |
__ stw(G0 /* JvmtiThreadState::earlyret_inactive */, cond_addr); |
|
1714 |
||
1715 |
__ remove_activation(state, |
|
1716 |
/* throw_monitor_exception */ false, |
|
1717 |
/* install_monitor_exception */ false); |
|
1718 |
||
1719 |
// The caller's SP was adjusted upon method entry to accomodate |
|
1720 |
// the callee's non-argument locals. Undo that adjustment. |
|
1721 |
__ ret(); // return to caller |
|
1722 |
__ delayed()->restore(I5_savedSP, G0, SP); |
|
1723 |
||
1724 |
return entry; |
|
1725 |
} // end of JVMTI ForceEarlyReturn support |
|
1726 |
||
1727 |
||
1728 |
//------------------------------------------------------------------------------------------------------------------------ |
|
1729 |
// Helper for vtos entry point generation |
|
1730 |
||
1731 |
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) { |
|
1732 |
assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); |
|
1733 |
Label L; |
|
10252 | 1734 |
aep = __ pc(); __ push_ptr(); __ ba_short(L); |
1735 |
fep = __ pc(); __ push_f(); __ ba_short(L); |
|
1736 |
dep = __ pc(); __ push_d(); __ ba_short(L); |
|
1737 |
lep = __ pc(); __ push_l(); __ ba_short(L); |
|
1 | 1738 |
iep = __ pc(); __ push_i(); |
1739 |
bep = cep = sep = iep; // there aren't any |
|
1740 |
vep = __ pc(); __ bind(L); // fall through |
|
1741 |
generate_and_dispatch(t); |
|
1742 |
} |
|
1743 |
||
1744 |
// -------------------------------------------------------------------------------- |
|
1745 |
||
1746 |
||
1747 |
InterpreterGenerator::InterpreterGenerator(StubQueue* code) |
|
1748 |
: TemplateInterpreterGenerator(code) { |
|
1749 |
generate_all(); // down here so it can be "virtual" |
|
1750 |
} |
|
1751 |
||
1752 |
// -------------------------------------------------------------------------------- |
|
1753 |
||
1754 |
// Non-product code |
|
1755 |
#ifndef PRODUCT |
|
1756 |
address TemplateInterpreterGenerator::generate_trace_code(TosState state) { |
|
1757 |
address entry = __ pc(); |
|
1758 |
||
1759 |
__ push(state); |
|
1760 |
__ mov(O7, Lscratch); // protect return address within interpreter |
|
1761 |
||
1762 |
// Pass a 0 (not used in sparc) and the top of stack to the bytecode tracer |
|
1763 |
__ mov( Otos_l2, G3_scratch ); |
|
1764 |
__ call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), G0, Otos_l1, G3_scratch); |
|
1765 |
__ mov(Lscratch, O7); // restore return address |
|
1766 |
__ pop(state); |
|
1767 |
__ retl(); |
|
1768 |
__ delayed()->nop(); |
|
1769 |
||
1770 |
return entry; |
|
1771 |
} |
|
1772 |
||
1773 |
||
1774 |
// helpers for generate_and_dispatch |
|
1775 |
||
1776 |
void TemplateInterpreterGenerator::count_bytecode() { |
|
2571 | 1777 |
__ inc_counter(&BytecodeCounter::_counter_value, G3_scratch, G4_scratch); |
1 | 1778 |
} |
1779 |
||
1780 |
||
1781 |
void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { |
|
2571 | 1782 |
__ inc_counter(&BytecodeHistogram::_counters[t->bytecode()], G3_scratch, G4_scratch); |
1 | 1783 |
} |
1784 |
||
1785 |
||
1786 |
void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { |
|
2571 | 1787 |
AddressLiteral index (&BytecodePairHistogram::_index); |
1788 |
AddressLiteral counters((address) &BytecodePairHistogram::_counters); |
|
1 | 1789 |
|
1790 |
// get index, shift out old bytecode, bring in new bytecode, and store it |
|
1791 |
// _index = (_index >> log2_number_of_codes) | |
|
1792 |
// (bytecode << log2_number_of_codes); |
|
1793 |
||
2571 | 1794 |
__ load_contents(index, G4_scratch); |
1 | 1795 |
__ srl( G4_scratch, BytecodePairHistogram::log2_number_of_codes, G4_scratch ); |
1796 |
__ set( ((int)t->bytecode()) << BytecodePairHistogram::log2_number_of_codes, G3_scratch ); |
|
1797 |
__ or3( G3_scratch, G4_scratch, G4_scratch ); |
|
2571 | 1798 |
__ store_contents(G4_scratch, index, G3_scratch); |
1 | 1799 |
|
1800 |
// bump bucket contents |
|
1801 |
// _counters[_index] ++; |
|
1802 |
||
2571 | 1803 |
__ set(counters, G3_scratch); // loads into G3_scratch |
1 | 1804 |
__ sll( G4_scratch, LogBytesPerWord, G4_scratch ); // Index is word address |
1805 |
__ add (G3_scratch, G4_scratch, G3_scratch); // Add in index |
|
1806 |
__ ld (G3_scratch, 0, G4_scratch); |
|
1807 |
__ inc (G4_scratch); |
|
1808 |
__ st (G4_scratch, 0, G3_scratch); |
|
1809 |
} |
|
1810 |
||
1811 |
||
1812 |
void TemplateInterpreterGenerator::trace_bytecode(Template* t) { |
|
1813 |
// Call a little run-time stub to avoid blow-up for each bytecode. |
|
1814 |
// The run-time runtime saves the right registers, depending on |
|
1815 |
// the tosca in-state for the given template. |
|
1816 |
address entry = Interpreter::trace_code(t->tos_in()); |
|
1817 |
guarantee(entry != NULL, "entry must have been generated"); |
|
1818 |
__ call(entry, relocInfo::none); |
|
1819 |
__ delayed()->nop(); |
|
1820 |
} |
|
1821 |
||
1822 |
||
1823 |
void TemplateInterpreterGenerator::stop_interpreter_at() { |
|
2571 | 1824 |
AddressLiteral counter(&BytecodeCounter::_counter_value); |
1825 |
__ load_contents(counter, G3_scratch); |
|
1826 |
AddressLiteral stop_at(&StopInterpreterAt); |
|
1 | 1827 |
__ load_ptr_contents(stop_at, G4_scratch); |
1828 |
__ cmp(G3_scratch, G4_scratch); |
|
12103 | 1829 |
__ breakpoint_trap(Assembler::equal, Assembler::icc); |
1 | 1830 |
} |
1831 |
#endif // not PRODUCT |
|
1832 |
#endif // !CC_INTERP |