Mercurial > hg > truffle
view src/share/vm/interpreter/templateInterpreter.cpp @ 12719:895f31682b88
Make the speculation id an int and allow for more bits to be set in the HotSpot implementation (which currently silently discards unsupported high bit).
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Fri, 08 Nov 2013 12:10:15 +0100 |
parents | 359f7e70ae7f |
children | 096c224171c4 |
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/* * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "interpreter/interpreter.hpp" #include "interpreter/interpreterGenerator.hpp" #include "interpreter/interpreterRuntime.hpp" #include "interpreter/templateTable.hpp" #ifndef CC_INTERP # define __ _masm-> void TemplateInterpreter::initialize() { if (_code != NULL) return; // assertions assert((int)Bytecodes::number_of_codes <= (int)DispatchTable::length, "dispatch table too small"); AbstractInterpreter::initialize(); TemplateTable::initialize(); // generate interpreter { ResourceMark rm; TraceTime timer("Interpreter generation", TraceStartupTime); int code_size = InterpreterCodeSize; NOT_PRODUCT(code_size *= 4;) // debug uses extra interpreter code space _code = new StubQueue(new InterpreterCodeletInterface, code_size, NULL, "Interpreter"); InterpreterGenerator g(_code); if (PrintInterpreter) print(); } // initialize dispatch table _active_table = _normal_table; } //------------------------------------------------------------------------------------------------------------------------ // Implementation of EntryPoint EntryPoint::EntryPoint() { assert(number_of_states == 9, "check the code below"); _entry[btos] = NULL; _entry[ctos] = NULL; _entry[stos] = NULL; _entry[atos] = NULL; _entry[itos] = NULL; _entry[ltos] = NULL; _entry[ftos] = NULL; _entry[dtos] = NULL; _entry[vtos] = NULL; } EntryPoint::EntryPoint(address bentry, address centry, address sentry, address aentry, address ientry, address lentry, address fentry, address dentry, address ventry) { assert(number_of_states == 9, "check the code below"); _entry[btos] = bentry; _entry[ctos] = centry; _entry[stos] = sentry; _entry[atos] = aentry; _entry[itos] = ientry; _entry[ltos] = lentry; _entry[ftos] = fentry; _entry[dtos] = dentry; _entry[vtos] = ventry; } void EntryPoint::set_entry(TosState state, address entry) { assert(0 <= state && state < number_of_states, "state out of bounds"); _entry[state] = entry; } address EntryPoint::entry(TosState state) const { assert(0 <= state && state < number_of_states, "state out of bounds"); return _entry[state]; } void EntryPoint::print() { tty->print("["); for (int i = 0; i < number_of_states; i++) { if (i > 0) tty->print(", "); tty->print(INTPTR_FORMAT, _entry[i]); } tty->print("]"); } bool EntryPoint::operator == (const EntryPoint& y) { int i = number_of_states; while (i-- > 0) { if (_entry[i] != y._entry[i]) return false; } return true; } //------------------------------------------------------------------------------------------------------------------------ // Implementation of DispatchTable EntryPoint DispatchTable::entry(int i) const { assert(0 <= i && i < length, "index out of bounds"); return EntryPoint( _table[btos][i], _table[ctos][i], _table[stos][i], _table[atos][i], _table[itos][i], _table[ltos][i], _table[ftos][i], _table[dtos][i], _table[vtos][i] ); } void DispatchTable::set_entry(int i, EntryPoint& entry) { assert(0 <= i && i < length, "index out of bounds"); assert(number_of_states == 9, "check the code below"); _table[btos][i] = entry.entry(btos); _table[ctos][i] = entry.entry(ctos); _table[stos][i] = entry.entry(stos); _table[atos][i] = entry.entry(atos); _table[itos][i] = entry.entry(itos); _table[ltos][i] = entry.entry(ltos); _table[ftos][i] = entry.entry(ftos); _table[dtos][i] = entry.entry(dtos); _table[vtos][i] = entry.entry(vtos); } bool DispatchTable::operator == (DispatchTable& y) { int i = length; while (i-- > 0) { EntryPoint t = y.entry(i); // for compiler compatibility (BugId 4150096) if (!(entry(i) == t)) return false; } return true; } address TemplateInterpreter::_remove_activation_entry = NULL; address TemplateInterpreter::_remove_activation_preserving_args_entry = NULL; address TemplateInterpreter::_throw_ArrayIndexOutOfBoundsException_entry = NULL; address TemplateInterpreter::_throw_ArrayStoreException_entry = NULL; address TemplateInterpreter::_throw_ArithmeticException_entry = NULL; address TemplateInterpreter::_throw_ClassCastException_entry = NULL; address TemplateInterpreter::_throw_NullPointerException_entry = NULL; address TemplateInterpreter::_throw_StackOverflowError_entry = NULL; address TemplateInterpreter::_throw_exception_entry = NULL; #ifndef PRODUCT EntryPoint TemplateInterpreter::_trace_code; #endif // !PRODUCT EntryPoint TemplateInterpreter::_return_entry[TemplateInterpreter::number_of_return_entries]; EntryPoint TemplateInterpreter::_earlyret_entry; EntryPoint TemplateInterpreter::_deopt_entry [TemplateInterpreter::number_of_deopt_entries ]; EntryPoint TemplateInterpreter::_continuation_entry; EntryPoint TemplateInterpreter::_safept_entry; address TemplateInterpreter::_return_3_addrs_by_index[TemplateInterpreter::number_of_return_addrs]; address TemplateInterpreter::_return_5_addrs_by_index[TemplateInterpreter::number_of_return_addrs]; DispatchTable TemplateInterpreter::_active_table; DispatchTable TemplateInterpreter::_normal_table; DispatchTable TemplateInterpreter::_safept_table; address TemplateInterpreter::_wentry_point[DispatchTable::length]; TemplateInterpreterGenerator::TemplateInterpreterGenerator(StubQueue* _code): AbstractInterpreterGenerator(_code) { _unimplemented_bytecode = NULL; _illegal_bytecode_sequence = NULL; } static const BasicType types[Interpreter::number_of_result_handlers] = { T_BOOLEAN, T_CHAR , T_BYTE , T_SHORT , T_INT , T_LONG , T_VOID , T_FLOAT , T_DOUBLE , T_OBJECT }; void TemplateInterpreterGenerator::generate_all() { AbstractInterpreterGenerator::generate_all(); { CodeletMark cm(_masm, "error exits"); _unimplemented_bytecode = generate_error_exit("unimplemented bytecode"); _illegal_bytecode_sequence = generate_error_exit("illegal bytecode sequence - method not verified"); } #ifndef PRODUCT if (TraceBytecodes) { CodeletMark cm(_masm, "bytecode tracing support"); Interpreter::_trace_code = EntryPoint( generate_trace_code(btos), generate_trace_code(ctos), generate_trace_code(stos), generate_trace_code(atos), generate_trace_code(itos), generate_trace_code(ltos), generate_trace_code(ftos), generate_trace_code(dtos), generate_trace_code(vtos) ); } #endif // !PRODUCT { CodeletMark cm(_masm, "return entry points"); for (int i = 0; i < Interpreter::number_of_return_entries; i++) { Interpreter::_return_entry[i] = EntryPoint( generate_return_entry_for(itos, i), generate_return_entry_for(itos, i), generate_return_entry_for(itos, i), generate_return_entry_for(atos, i), generate_return_entry_for(itos, i), generate_return_entry_for(ltos, i), generate_return_entry_for(ftos, i), generate_return_entry_for(dtos, i), generate_return_entry_for(vtos, i) ); } } { CodeletMark cm(_masm, "earlyret entry points"); Interpreter::_earlyret_entry = EntryPoint( generate_earlyret_entry_for(btos), generate_earlyret_entry_for(ctos), generate_earlyret_entry_for(stos), generate_earlyret_entry_for(atos), generate_earlyret_entry_for(itos), generate_earlyret_entry_for(ltos), generate_earlyret_entry_for(ftos), generate_earlyret_entry_for(dtos), generate_earlyret_entry_for(vtos) ); } { CodeletMark cm(_masm, "deoptimization entry points"); for (int i = 0; i < Interpreter::number_of_deopt_entries; i++) { Interpreter::_deopt_entry[i] = EntryPoint( ((InterpreterGenerator*)this)->generate_deopt_entry_for(itos, i), ((InterpreterGenerator*)this)->generate_deopt_entry_for(itos, i), ((InterpreterGenerator*)this)->generate_deopt_entry_for(itos, i), ((InterpreterGenerator*)this)->generate_deopt_entry_for(atos, i), ((InterpreterGenerator*)this)->generate_deopt_entry_for(itos, i), ((InterpreterGenerator*)this)->generate_deopt_entry_for(ltos, i), ((InterpreterGenerator*)this)->generate_deopt_entry_for(ftos, i), ((InterpreterGenerator*)this)->generate_deopt_entry_for(dtos, i), ((InterpreterGenerator*)this)->generate_deopt_entry_for(vtos, i) ); } } { CodeletMark cm(_masm, "result handlers for native calls"); // The various result converter stublets. int is_generated[Interpreter::number_of_result_handlers]; memset(is_generated, 0, sizeof(is_generated)); for (int i = 0; i < Interpreter::number_of_result_handlers; i++) { BasicType type = types[i]; if (!is_generated[Interpreter::BasicType_as_index(type)]++) { Interpreter::_native_abi_to_tosca[Interpreter::BasicType_as_index(type)] = generate_result_handler_for(type); } } } for (int j = 0; j < number_of_states; j++) { const TosState states[] = {btos, ctos, stos, itos, ltos, ftos, dtos, atos, vtos}; int index = Interpreter::TosState_as_index(states[j]); Interpreter::_return_3_addrs_by_index[index] = Interpreter::return_entry(states[j], 3); Interpreter::_return_5_addrs_by_index[index] = Interpreter::return_entry(states[j], 5); } { CodeletMark cm(_masm, "continuation entry points"); Interpreter::_continuation_entry = EntryPoint( generate_continuation_for(btos), generate_continuation_for(ctos), generate_continuation_for(stos), generate_continuation_for(atos), generate_continuation_for(itos), generate_continuation_for(ltos), generate_continuation_for(ftos), generate_continuation_for(dtos), generate_continuation_for(vtos) ); } { CodeletMark cm(_masm, "safepoint entry points"); Interpreter::_safept_entry = EntryPoint( generate_safept_entry_for(btos, CAST_FROM_FN_PTR(address, InterpreterRuntime::at_safepoint)), generate_safept_entry_for(ctos, CAST_FROM_FN_PTR(address, InterpreterRuntime::at_safepoint)), generate_safept_entry_for(stos, CAST_FROM_FN_PTR(address, InterpreterRuntime::at_safepoint)), generate_safept_entry_for(atos, CAST_FROM_FN_PTR(address, InterpreterRuntime::at_safepoint)), generate_safept_entry_for(itos, CAST_FROM_FN_PTR(address, InterpreterRuntime::at_safepoint)), generate_safept_entry_for(ltos, CAST_FROM_FN_PTR(address, InterpreterRuntime::at_safepoint)), generate_safept_entry_for(ftos, CAST_FROM_FN_PTR(address, InterpreterRuntime::at_safepoint)), generate_safept_entry_for(dtos, CAST_FROM_FN_PTR(address, InterpreterRuntime::at_safepoint)), generate_safept_entry_for(vtos, CAST_FROM_FN_PTR(address, InterpreterRuntime::at_safepoint)) ); } { CodeletMark cm(_masm, "exception handling"); // (Note: this is not safepoint safe because thread may return to compiled code) generate_throw_exception(); } { CodeletMark cm(_masm, "throw exception entrypoints"); Interpreter::_throw_ArrayIndexOutOfBoundsException_entry = generate_ArrayIndexOutOfBounds_handler("java/lang/ArrayIndexOutOfBoundsException"); Interpreter::_throw_ArrayStoreException_entry = generate_klass_exception_handler("java/lang/ArrayStoreException" ); Interpreter::_throw_ArithmeticException_entry = generate_exception_handler("java/lang/ArithmeticException" , "/ by zero"); Interpreter::_throw_ClassCastException_entry = generate_ClassCastException_handler(); Interpreter::_throw_NullPointerException_entry = generate_exception_handler("java/lang/NullPointerException" , NULL ); Interpreter::_throw_StackOverflowError_entry = generate_StackOverflowError_handler(); } #define method_entry(kind) \ { CodeletMark cm(_masm, "method entry point (kind = " #kind ")"); \ Interpreter::_entry_table[Interpreter::kind] = generate_method_entry(Interpreter::kind); \ } // all non-native method kinds method_entry(zerolocals) method_entry(zerolocals_synchronized) method_entry(empty) #ifdef GRAAL method_entry(execute_compiled_method) #endif method_entry(accessor) method_entry(abstract) method_entry(java_lang_math_sin ) method_entry(java_lang_math_cos ) method_entry(java_lang_math_tan ) method_entry(java_lang_math_abs ) method_entry(java_lang_math_sqrt ) method_entry(java_lang_math_log ) method_entry(java_lang_math_log10) method_entry(java_lang_math_exp ) method_entry(java_lang_math_pow ) method_entry(java_lang_ref_reference_get) if (UseCRC32Intrinsics) { method_entry(java_util_zip_CRC32_update) method_entry(java_util_zip_CRC32_updateBytes) method_entry(java_util_zip_CRC32_updateByteBuffer) } initialize_method_handle_entries(); // all native method kinds (must be one contiguous block) Interpreter::_native_entry_begin = Interpreter::code()->code_end(); method_entry(native) method_entry(native_synchronized) Interpreter::_native_entry_end = Interpreter::code()->code_end(); #undef method_entry // Bytecodes set_entry_points_for_all_bytes(); set_safepoints_for_all_bytes(); } //------------------------------------------------------------------------------------------------------------------------ address TemplateInterpreterGenerator::generate_error_exit(const char* msg) { address entry = __ pc(); __ stop(msg); return entry; } //------------------------------------------------------------------------------------------------------------------------ void TemplateInterpreterGenerator::set_entry_points_for_all_bytes() { for (int i = 0; i < DispatchTable::length; i++) { Bytecodes::Code code = (Bytecodes::Code)i; if (Bytecodes::is_defined(code)) { set_entry_points(code); } else { set_unimplemented(i); } } } void TemplateInterpreterGenerator::set_safepoints_for_all_bytes() { for (int i = 0; i < DispatchTable::length; i++) { Bytecodes::Code code = (Bytecodes::Code)i; if (Bytecodes::is_defined(code)) Interpreter::_safept_table.set_entry(code, Interpreter::_safept_entry); } } void TemplateInterpreterGenerator::set_unimplemented(int i) { address e = _unimplemented_bytecode; EntryPoint entry(e, e, e, e, e, e, e, e, e); Interpreter::_normal_table.set_entry(i, entry); Interpreter::_wentry_point[i] = _unimplemented_bytecode; } void TemplateInterpreterGenerator::set_entry_points(Bytecodes::Code code) { CodeletMark cm(_masm, Bytecodes::name(code), code); // initialize entry points assert(_unimplemented_bytecode != NULL, "should have been generated before"); assert(_illegal_bytecode_sequence != NULL, "should have been generated before"); address bep = _illegal_bytecode_sequence; address cep = _illegal_bytecode_sequence; address sep = _illegal_bytecode_sequence; address aep = _illegal_bytecode_sequence; address iep = _illegal_bytecode_sequence; address lep = _illegal_bytecode_sequence; address fep = _illegal_bytecode_sequence; address dep = _illegal_bytecode_sequence; address vep = _unimplemented_bytecode; address wep = _unimplemented_bytecode; // code for short & wide version of bytecode if (Bytecodes::is_defined(code)) { Template* t = TemplateTable::template_for(code); assert(t->is_valid(), "just checking"); set_short_entry_points(t, bep, cep, sep, aep, iep, lep, fep, dep, vep); } if (Bytecodes::wide_is_defined(code)) { Template* t = TemplateTable::template_for_wide(code); assert(t->is_valid(), "just checking"); set_wide_entry_point(t, wep); } // set entry points EntryPoint entry(bep, cep, sep, aep, iep, lep, fep, dep, vep); Interpreter::_normal_table.set_entry(code, entry); Interpreter::_wentry_point[code] = wep; } void TemplateInterpreterGenerator::set_wide_entry_point(Template* t, address& wep) { assert(t->is_valid(), "template must exist"); assert(t->tos_in() == vtos, "only vtos tos_in supported for wide instructions"); wep = __ pc(); generate_and_dispatch(t); } void TemplateInterpreterGenerator::set_short_entry_points(Template* t, address& bep, address& cep, address& sep, address& aep, address& iep, address& lep, address& fep, address& dep, address& vep) { assert(t->is_valid(), "template must exist"); switch (t->tos_in()) { case btos: case ctos: case stos: ShouldNotReachHere(); // btos/ctos/stos should use itos. break; case atos: vep = __ pc(); __ pop(atos); aep = __ pc(); generate_and_dispatch(t); break; case itos: vep = __ pc(); __ pop(itos); iep = __ pc(); generate_and_dispatch(t); break; case ltos: vep = __ pc(); __ pop(ltos); lep = __ pc(); generate_and_dispatch(t); break; case ftos: vep = __ pc(); __ pop(ftos); fep = __ pc(); generate_and_dispatch(t); break; case dtos: vep = __ pc(); __ pop(dtos); dep = __ pc(); generate_and_dispatch(t); break; case vtos: set_vtos_entry_points(t, bep, cep, sep, aep, iep, lep, fep, dep, vep); break; default : ShouldNotReachHere(); break; } } //------------------------------------------------------------------------------------------------------------------------ void TemplateInterpreterGenerator::generate_and_dispatch(Template* t, TosState tos_out) { if (PrintBytecodeHistogram) histogram_bytecode(t); #ifndef PRODUCT // debugging code if (CountBytecodes || TraceBytecodes || StopInterpreterAt > 0) count_bytecode(); if (PrintBytecodePairHistogram) histogram_bytecode_pair(t); if (TraceBytecodes) trace_bytecode(t); if (StopInterpreterAt > 0) stop_interpreter_at(); __ verify_FPU(1, t->tos_in()); #endif // !PRODUCT int step; if (!t->does_dispatch()) { step = t->is_wide() ? Bytecodes::wide_length_for(t->bytecode()) : Bytecodes::length_for(t->bytecode()); if (tos_out == ilgl) tos_out = t->tos_out(); // compute bytecode size assert(step > 0, "just checkin'"); // setup stuff for dispatching next bytecode if (ProfileInterpreter && VerifyDataPointer && MethodData::bytecode_has_profile(t->bytecode())) { __ verify_method_data_pointer(); } __ dispatch_prolog(tos_out, step); } // generate template t->generate(_masm); // advance if (t->does_dispatch()) { #ifdef ASSERT // make sure execution doesn't go beyond this point if code is broken __ should_not_reach_here(); #endif // ASSERT } else { // dispatch to next bytecode __ dispatch_epilog(tos_out, step); } } //------------------------------------------------------------------------------------------------------------------------ // Entry points address TemplateInterpreter::return_entry(TosState state, int length) { guarantee(0 <= length && length < Interpreter::number_of_return_entries, "illegal length"); return _return_entry[length].entry(state); } address TemplateInterpreter::deopt_entry(TosState state, int length) { guarantee(0 <= length && length < Interpreter::number_of_deopt_entries, "illegal length"); return _deopt_entry[length].entry(state); } //------------------------------------------------------------------------------------------------------------------------ // Suport for invokes int TemplateInterpreter::TosState_as_index(TosState state) { assert( state < number_of_states , "Invalid state in TosState_as_index"); assert(0 <= (int)state && (int)state < TemplateInterpreter::number_of_return_addrs, "index out of bounds"); return (int)state; } //------------------------------------------------------------------------------------------------------------------------ // Safepoint suppport static inline void copy_table(address* from, address* to, int size) { // Copy non-overlapping tables. The copy has to occur word wise for MT safety. while (size-- > 0) *to++ = *from++; } void TemplateInterpreter::notice_safepoints() { if (!_notice_safepoints) { // switch to safepoint dispatch table _notice_safepoints = true; copy_table((address*)&_safept_table, (address*)&_active_table, sizeof(_active_table) / sizeof(address)); } } // switch from the dispatch table which notices safepoints back to the // normal dispatch table. So that we can notice single stepping points, // keep the safepoint dispatch table if we are single stepping in JVMTI. // Note that the should_post_single_step test is exactly as fast as the // JvmtiExport::_enabled test and covers both cases. void TemplateInterpreter::ignore_safepoints() { if (_notice_safepoints) { if (!JvmtiExport::should_post_single_step()) { // switch to normal dispatch table _notice_safepoints = false; copy_table((address*)&_normal_table, (address*)&_active_table, sizeof(_active_table) / sizeof(address)); } } } //------------------------------------------------------------------------------------------------------------------------ // Deoptimization support // If deoptimization happens, this function returns the point of next bytecode to continue execution address TemplateInterpreter::deopt_continue_after_entry(Method* method, address bcp, int callee_parameters, bool is_top_frame) { return AbstractInterpreter::deopt_continue_after_entry(method, bcp, callee_parameters, is_top_frame); } // If deoptimization happens, this function returns the point where the interpreter reexecutes // the bytecode. // Note: Bytecodes::_athrow (C1 only) and Bytecodes::_return are the special cases // that do not return "Interpreter::deopt_entry(vtos, 0)" address TemplateInterpreter::deopt_reexecute_entry(Method* method, address bcp) { assert(method->contains(bcp), "just checkin'"); Bytecodes::Code code = Bytecodes::java_code_at(method, bcp); if (code == Bytecodes::_return) { // This is used for deopt during registration of finalizers // during Object.<init>. We simply need to resume execution at // the standard return vtos bytecode to pop the frame normally. // reexecuting the real bytecode would cause double registration // of the finalizable object. return _normal_table.entry(Bytecodes::_return).entry(vtos); } else { return AbstractInterpreter::deopt_reexecute_entry(method, bcp); } } // If deoptimization happens, the interpreter should reexecute this bytecode. // This function mainly helps the compilers to set up the reexecute bit. bool TemplateInterpreter::bytecode_should_reexecute(Bytecodes::Code code) { if (code == Bytecodes::_return) { //Yes, we consider Bytecodes::_return as a special case of reexecution return true; } else { return AbstractInterpreter::bytecode_should_reexecute(code); } } #endif // !CC_INTERP