| /* |
| * Copyright (c) 1997, 2015, 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. |
| * |
| */ |
| |
| #ifndef SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP |
| #define SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP |
| |
| #include "code/stubs.hpp" |
| #include "interpreter/bytecodes.hpp" |
| #include "runtime/thread.inline.hpp" |
| #include "runtime/vmThread.hpp" |
| #include "utilities/top.hpp" |
| #if defined INTERP_MASM_MD_HPP |
| # include INTERP_MASM_MD_HPP |
| #elif defined TARGET_ARCH_x86 |
| # include "interp_masm_x86.hpp" |
| #elif defined TARGET_ARCH_MODEL_sparc |
| # include "interp_masm_sparc.hpp" |
| #elif defined TARGET_ARCH_MODEL_zero |
| # include "interp_masm_zero.hpp" |
| #elif defined TARGET_ARCH_MODEL_ppc_64 |
| # include "interp_masm_ppc_64.hpp" |
| #endif |
| |
| // This file contains the platform-independent parts |
| // of the abstract interpreter and the abstract interpreter generator. |
| |
| // Organization of the interpreter(s). There exists two different interpreters in hotpot |
| // an assembly language version (aka template interpreter) and a high level language version |
| // (aka c++ interpreter). Th division of labor is as follows: |
| |
| // Template Interpreter C++ Interpreter Functionality |
| // |
| // templateTable* bytecodeInterpreter* actual interpretation of bytecodes |
| // |
| // templateInterpreter* cppInterpreter* generation of assembly code that creates |
| // and manages interpreter runtime frames. |
| // Also code for populating interpreter |
| // frames created during deoptimization. |
| // |
| // For both template and c++ interpreter. There are common files for aspects of the interpreter |
| // that are generic to both interpreters. This is the layout: |
| // |
| // abstractInterpreter.hpp: generic description of the interpreter. |
| // interpreter*: generic frame creation and handling. |
| // |
| |
| //------------------------------------------------------------------------------------------------------------------------ |
| // The C++ interface to the bytecode interpreter(s). |
| |
| class AbstractInterpreter: AllStatic { |
| friend class VMStructs; |
| friend class Interpreter; |
| friend class CppInterpreterGenerator; |
| public: |
| enum MethodKind { |
| zerolocals, // method needs locals initialization |
| zerolocals_synchronized, // method needs locals initialization & is synchronized |
| native, // native method |
| native_synchronized, // native method & is synchronized |
| empty, // empty method (code: _return) |
| accessor, // accessor method (code: _aload_0, _getfield, _(a|i)return) |
| abstract, // abstract method (throws an AbstractMethodException) |
| method_handle_invoke_FIRST, // java.lang.invoke.MethodHandles::invokeExact, etc. |
| method_handle_invoke_LAST = (method_handle_invoke_FIRST |
| + (vmIntrinsics::LAST_MH_SIG_POLY |
| - vmIntrinsics::FIRST_MH_SIG_POLY)), |
| java_lang_math_sin, // implementation of java.lang.Math.sin (x) |
| java_lang_math_cos, // implementation of java.lang.Math.cos (x) |
| java_lang_math_tan, // implementation of java.lang.Math.tan (x) |
| java_lang_math_abs, // implementation of java.lang.Math.abs (x) |
| java_lang_math_sqrt, // implementation of java.lang.Math.sqrt (x) |
| java_lang_math_log, // implementation of java.lang.Math.log (x) |
| java_lang_math_log10, // implementation of java.lang.Math.log10 (x) |
| java_lang_math_pow, // implementation of java.lang.Math.pow (x,y) |
| java_lang_math_exp, // implementation of java.lang.Math.exp (x) |
| java_lang_ref_reference_get, // implementation of java.lang.ref.Reference.get() |
| java_util_zip_CRC32_update, // implementation of java.util.zip.CRC32.update() |
| java_util_zip_CRC32_updateBytes, // implementation of java.util.zip.CRC32.updateBytes() |
| java_util_zip_CRC32_updateByteBuffer, // implementation of java.util.zip.CRC32.updateByteBuffer() |
| number_of_method_entries, |
| invalid = -1 |
| }; |
| |
| // Conversion from the part of the above enum to vmIntrinsics::_invokeExact, etc. |
| static vmIntrinsics::ID method_handle_intrinsic(MethodKind kind) { |
| if (kind >= method_handle_invoke_FIRST && kind <= method_handle_invoke_LAST) |
| return (vmIntrinsics::ID)( vmIntrinsics::FIRST_MH_SIG_POLY + (kind - method_handle_invoke_FIRST) ); |
| else |
| return vmIntrinsics::_none; |
| } |
| |
| enum SomeConstants { |
| number_of_result_handlers = 10 // number of result handlers for native calls |
| }; |
| |
| protected: |
| static StubQueue* _code; // the interpreter code (codelets) |
| |
| static bool _notice_safepoints; // true if safepoints are activated |
| |
| static address _native_entry_begin; // Region for native entry code |
| static address _native_entry_end; |
| |
| // method entry points |
| static address _entry_table[number_of_method_entries]; // entry points for a given method |
| static address _native_abi_to_tosca[number_of_result_handlers]; // for native method result handlers |
| static address _slow_signature_handler; // the native method generic (slow) signature handler |
| |
| static address _rethrow_exception_entry; // rethrows an activation in previous frame |
| |
| friend class AbstractInterpreterGenerator; |
| friend class InterpreterGenerator; |
| friend class InterpreterMacroAssembler; |
| |
| public: |
| // Initialization/debugging |
| static void initialize(); |
| static StubQueue* code() { return _code; } |
| |
| |
| // Method activation |
| static MethodKind method_kind(methodHandle m); |
| static address entry_for_kind(MethodKind k) { assert(0 <= k && k < number_of_method_entries, "illegal kind"); return _entry_table[k]; } |
| static address entry_for_method(methodHandle m) { return entry_for_kind(method_kind(m)); } |
| |
| // used for bootstrapping method handles: |
| static void set_entry_for_kind(MethodKind k, address e); |
| |
| static void print_method_kind(MethodKind kind) PRODUCT_RETURN; |
| |
| static bool can_be_compiled(methodHandle m); |
| |
| // Runtime support |
| |
| // length = invoke bytecode length (to advance to next bytecode) |
| static address deopt_entry(TosState state, int length) { ShouldNotReachHere(); return NULL; } |
| static address return_entry(TosState state, int length, Bytecodes::Code code) { ShouldNotReachHere(); return NULL; } |
| |
| static address rethrow_exception_entry() { return _rethrow_exception_entry; } |
| |
| // Activation size in words for a method that is just being called. |
| // Parameters haven't been pushed so count them too. |
| static int size_top_interpreter_activation(Method* method); |
| |
| // Deoptimization support |
| // Compute the entry address for continuation after |
| static address deopt_continue_after_entry(Method* method, |
| address bcp, |
| int callee_parameters, |
| bool is_top_frame); |
| // Compute the entry address for reexecution |
| static address deopt_reexecute_entry(Method* method, address bcp); |
| // Deoptimization should reexecute this bytecode |
| static bool bytecode_should_reexecute(Bytecodes::Code code); |
| |
| // deoptimization support |
| static int size_activation(int max_stack, |
| int temps, |
| int extra_args, |
| int monitors, |
| int callee_params, |
| int callee_locals, |
| bool is_top_frame); |
| |
| static void layout_activation(Method* method, |
| int temps, |
| int popframe_args, |
| int monitors, |
| int caller_actual_parameters, |
| int callee_params, |
| int callee_locals, |
| frame* caller, |
| frame* interpreter_frame, |
| bool is_top_frame, |
| bool is_bottom_frame); |
| |
| // Runtime support |
| static bool is_not_reached( methodHandle method, int bci); |
| // Safepoint support |
| static void notice_safepoints() { ShouldNotReachHere(); } // stops the thread when reaching a safepoint |
| static void ignore_safepoints() { ShouldNotReachHere(); } // ignores safepoints |
| |
| // Support for native calls |
| static address slow_signature_handler() { return _slow_signature_handler; } |
| static address result_handler(BasicType type) { return _native_abi_to_tosca[BasicType_as_index(type)]; } |
| static int BasicType_as_index(BasicType type); // computes index into result_handler_by_index table |
| static bool in_native_entry(address pc) { return _native_entry_begin <= pc && pc < _native_entry_end; } |
| // Debugging/printing |
| static void print(); // prints the interpreter code |
| |
| public: |
| // Interpreter helpers |
| const static int stackElementWords = 1; |
| const static int stackElementSize = stackElementWords * wordSize; |
| const static int logStackElementSize = LogBytesPerWord; |
| |
| // Local values relative to locals[n] |
| static int local_offset_in_bytes(int n) { |
| return ((frame::interpreter_frame_expression_stack_direction() * n) * stackElementSize); |
| } |
| |
| // access to stacked values according to type: |
| static oop* oop_addr_in_slot(intptr_t* slot_addr) { |
| return (oop*) slot_addr; |
| } |
| static jint* int_addr_in_slot(intptr_t* slot_addr) { |
| if ((int) sizeof(jint) < wordSize && !Bytes::is_Java_byte_ordering_different()) |
| // big-endian LP64 |
| return (jint*)(slot_addr + 1) - 1; |
| else |
| return (jint*) slot_addr; |
| } |
| static jlong long_in_slot(intptr_t* slot_addr) { |
| if (sizeof(intptr_t) >= sizeof(jlong)) { |
| return *(jlong*) slot_addr; |
| } else { |
| return Bytes::get_native_u8((address)slot_addr); |
| } |
| } |
| static void set_long_in_slot(intptr_t* slot_addr, jlong value) { |
| if (sizeof(intptr_t) >= sizeof(jlong)) { |
| *(jlong*) slot_addr = value; |
| } else { |
| Bytes::put_native_u8((address)slot_addr, value); |
| } |
| } |
| static void get_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) { |
| switch (type) { |
| case T_BOOLEAN: value->z = *int_addr_in_slot(slot_addr); break; |
| case T_CHAR: value->c = *int_addr_in_slot(slot_addr); break; |
| case T_BYTE: value->b = *int_addr_in_slot(slot_addr); break; |
| case T_SHORT: value->s = *int_addr_in_slot(slot_addr); break; |
| case T_INT: value->i = *int_addr_in_slot(slot_addr); break; |
| case T_LONG: value->j = long_in_slot(slot_addr); break; |
| case T_FLOAT: value->f = *(jfloat*)int_addr_in_slot(slot_addr); break; |
| case T_DOUBLE: value->d = jdouble_cast(long_in_slot(slot_addr)); break; |
| case T_OBJECT: value->l = (jobject)*oop_addr_in_slot(slot_addr); break; |
| default: ShouldNotReachHere(); |
| } |
| } |
| static void set_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) { |
| switch (type) { |
| case T_BOOLEAN: *int_addr_in_slot(slot_addr) = (value->z != 0); break; |
| case T_CHAR: *int_addr_in_slot(slot_addr) = value->c; break; |
| case T_BYTE: *int_addr_in_slot(slot_addr) = value->b; break; |
| case T_SHORT: *int_addr_in_slot(slot_addr) = value->s; break; |
| case T_INT: *int_addr_in_slot(slot_addr) = value->i; break; |
| case T_LONG: set_long_in_slot(slot_addr, value->j); break; |
| case T_FLOAT: *(jfloat*)int_addr_in_slot(slot_addr) = value->f; break; |
| case T_DOUBLE: set_long_in_slot(slot_addr, jlong_cast(value->d)); break; |
| case T_OBJECT: *oop_addr_in_slot(slot_addr) = (oop) value->l; break; |
| default: ShouldNotReachHere(); |
| } |
| } |
| }; |
| |
| //------------------------------------------------------------------------------------------------------------------------ |
| // The interpreter generator. |
| |
| class Template; |
| class AbstractInterpreterGenerator: public StackObj { |
| protected: |
| InterpreterMacroAssembler* _masm; |
| |
| // shared code sequences |
| // Converter for native abi result to tosca result |
| address generate_result_handler_for(BasicType type); |
| address generate_slow_signature_handler(); |
| |
| // entry point generator |
| address generate_method_entry(AbstractInterpreter::MethodKind kind); |
| |
| void bang_stack_shadow_pages(bool native_call); |
| |
| void generate_all(); |
| void initialize_method_handle_entries(); |
| |
| public: |
| AbstractInterpreterGenerator(StubQueue* _code); |
| }; |
| |
| #endif // SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP |
