| /* |
| * Copyright (c) 2008, 2011, 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_PRIMS_METHODHANDLES_HPP |
| #define SHARE_VM_PRIMS_METHODHANDLES_HPP |
| |
| #include "classfile/javaClasses.hpp" |
| #include "classfile/vmSymbols.hpp" |
| #include "runtime/frame.inline.hpp" |
| #include "runtime/globals.hpp" |
| #include "runtime/interfaceSupport.hpp" |
| |
| class MacroAssembler; |
| class Label; |
| |
| class MethodHandles: AllStatic { |
| // JVM support for MethodHandle, MethodType, and related types |
| // in java.lang.invoke and sun.invoke. |
| // See also javaClasses for layouts java_lang_invoke_Method{Handle,Type,Type::Form}. |
| public: |
| public: |
| static bool enabled() { return _enabled; } |
| static void set_enabled(bool z); |
| |
| private: |
| static bool _enabled; |
| |
| // Adapters. |
| static MethodHandlesAdapterBlob* _adapter_code; |
| |
| public: |
| // working with member names |
| static Handle resolve_MemberName(Handle mname, TRAPS); // compute vmtarget/vmindex from name/type |
| static void expand_MemberName(Handle mname, int suppress, TRAPS); // expand defc/name/type if missing |
| static Handle new_MemberName(TRAPS); // must be followed by init_MemberName |
| static oop init_MemberName(oop mname_oop, oop target_oop); // compute vmtarget/vmindex from target |
| static oop init_method_MemberName(oop mname_oop, methodOop m, bool do_dispatch, |
| klassOop receiver_limit); |
| static oop init_field_MemberName(oop mname_oop, klassOop field_holder, |
| AccessFlags mods, oop type, oop name, |
| intptr_t offset, bool is_setter = false); |
| static Handle init_method_MemberName(oop mname_oop, CallInfo& info, TRAPS); |
| static Handle init_field_MemberName(oop mname_oop, FieldAccessInfo& info, TRAPS); |
| static int method_ref_kind(methodOop m, bool do_dispatch_if_possible = true); |
| static int find_MemberNames(klassOop k, Symbol* name, Symbol* sig, |
| int mflags, klassOop caller, |
| int skip, objArrayOop results); |
| // bit values for suppress argument to expand_MemberName: |
| enum { _suppress_defc = 1, _suppress_name = 2, _suppress_type = 4 }; |
| |
| // Generate MethodHandles adapters. |
| static void generate_adapters(); |
| |
| // Called from MethodHandlesAdapterGenerator. |
| static address generate_method_handle_interpreter_entry(MacroAssembler* _masm, vmIntrinsics::ID iid); |
| static void generate_method_handle_dispatch(MacroAssembler* _masm, |
| vmIntrinsics::ID iid, |
| Register receiver_reg, |
| Register member_reg, |
| bool for_compiler_entry); |
| |
| // Queries |
| static bool is_signature_polymorphic(vmIntrinsics::ID iid) { |
| return (iid >= vmIntrinsics::FIRST_MH_SIG_POLY && |
| iid <= vmIntrinsics::LAST_MH_SIG_POLY); |
| } |
| |
| static bool is_signature_polymorphic_intrinsic(vmIntrinsics::ID iid) { |
| assert(is_signature_polymorphic(iid), ""); |
| // Most sig-poly methods are intrinsics which do not require an |
| // appeal to Java for adapter code. |
| return (iid != vmIntrinsics::_invokeGeneric); |
| } |
| |
| static bool is_signature_polymorphic_static(vmIntrinsics::ID iid) { |
| assert(is_signature_polymorphic(iid), ""); |
| return (iid >= vmIntrinsics::FIRST_MH_STATIC && |
| iid <= vmIntrinsics::LAST_MH_SIG_POLY); |
| } |
| |
| static bool has_member_arg(vmIntrinsics::ID iid) { |
| assert(is_signature_polymorphic(iid), ""); |
| return (iid >= vmIntrinsics::_linkToVirtual && |
| iid <= vmIntrinsics::_linkToInterface); |
| } |
| static bool has_member_arg(Symbol* klass, Symbol* name) { |
| if ((klass == vmSymbols::java_lang_invoke_MethodHandle()) && |
| is_signature_polymorphic_name(name)) { |
| vmIntrinsics::ID iid = signature_polymorphic_name_id(name); |
| return has_member_arg(iid); |
| } |
| return false; |
| } |
| |
| static Symbol* signature_polymorphic_intrinsic_name(vmIntrinsics::ID iid); |
| static int signature_polymorphic_intrinsic_ref_kind(vmIntrinsics::ID iid); |
| |
| static vmIntrinsics::ID signature_polymorphic_name_id(klassOop klass, Symbol* name); |
| static vmIntrinsics::ID signature_polymorphic_name_id(Symbol* name); |
| static bool is_signature_polymorphic_name(Symbol* name) { |
| return signature_polymorphic_name_id(name) != vmIntrinsics::_none; |
| } |
| static bool is_method_handle_invoke_name(klassOop klass, Symbol* name); |
| static bool is_signature_polymorphic_name(klassOop klass, Symbol* name) { |
| return signature_polymorphic_name_id(klass, name) != vmIntrinsics::_none; |
| } |
| |
| enum { |
| // format of query to getConstant: |
| GC_COUNT_GWT = 4, |
| GC_LAMBDA_SUPPORT = 5 |
| }; |
| static int get_named_constant(int which, Handle name_box, TRAPS); |
| |
| public: |
| static Symbol* lookup_signature(oop type_str, bool polymorphic, TRAPS); // use TempNewSymbol |
| static Symbol* lookup_basic_type_signature(Symbol* sig, bool keep_last_arg, TRAPS); // use TempNewSymbol |
| static Symbol* lookup_basic_type_signature(Symbol* sig, TRAPS) { |
| return lookup_basic_type_signature(sig, false, THREAD); |
| } |
| static bool is_basic_type_signature(Symbol* sig); |
| |
| static Symbol* lookup_method_type(Symbol* msig, Handle mtype, TRAPS); |
| |
| static void print_as_method_type_on(outputStream* st, Symbol* sig) { |
| print_as_basic_type_signature_on(st, sig, true, true); |
| } |
| static void print_as_basic_type_signature_on(outputStream* st, Symbol* sig, bool keep_arrays = false, bool keep_basic_names = false); |
| |
| // decoding CONSTANT_MethodHandle constants |
| enum { JVM_REF_MIN = JVM_REF_getField, JVM_REF_MAX = JVM_REF_invokeInterface }; |
| static bool ref_kind_is_valid(int ref_kind) { |
| return (ref_kind >= JVM_REF_MIN && ref_kind <= JVM_REF_MAX); |
| } |
| static bool ref_kind_is_field(int ref_kind) { |
| assert(ref_kind_is_valid(ref_kind), ""); |
| return (ref_kind <= JVM_REF_putStatic); |
| } |
| static bool ref_kind_is_getter(int ref_kind) { |
| assert(ref_kind_is_valid(ref_kind), ""); |
| return (ref_kind <= JVM_REF_getStatic); |
| } |
| static bool ref_kind_is_setter(int ref_kind) { |
| return ref_kind_is_field(ref_kind) && !ref_kind_is_getter(ref_kind); |
| } |
| static bool ref_kind_is_method(int ref_kind) { |
| return !ref_kind_is_field(ref_kind) && (ref_kind != JVM_REF_newInvokeSpecial); |
| } |
| static bool ref_kind_has_receiver(int ref_kind) { |
| assert(ref_kind_is_valid(ref_kind), ""); |
| return (ref_kind & 1) != 0; |
| } |
| static bool ref_kind_is_static(int ref_kind) { |
| return !ref_kind_has_receiver(ref_kind) && (ref_kind != JVM_REF_newInvokeSpecial); |
| } |
| static bool ref_kind_does_dispatch(int ref_kind) { |
| return (ref_kind == JVM_REF_invokeVirtual || |
| ref_kind == JVM_REF_invokeInterface); |
| } |
| |
| |
| #ifdef TARGET_ARCH_x86 |
| # include "methodHandles_x86.hpp" |
| #endif |
| #ifdef TARGET_ARCH_sparc |
| # include "methodHandles_sparc.hpp" |
| #endif |
| #ifdef TARGET_ARCH_zero |
| # include "methodHandles_zero.hpp" |
| #endif |
| #ifdef TARGET_ARCH_arm |
| # include "methodHandles_arm.hpp" |
| #endif |
| #ifdef TARGET_ARCH_ppc |
| # include "methodHandles_ppc.hpp" |
| #endif |
| |
| // Tracing |
| static void trace_method_handle(MacroAssembler* _masm, const char* adaptername) PRODUCT_RETURN; |
| static void trace_method_handle_interpreter_entry(MacroAssembler* _masm, vmIntrinsics::ID iid) { |
| if (TraceMethodHandles) { |
| const char* name = vmIntrinsics::name_at(iid); |
| if (*name == '_') name += 1; |
| const size_t len = strlen(name) + 50; |
| char* qname = NEW_C_HEAP_ARRAY(char, len, mtInternal); |
| const char* suffix = ""; |
| if (is_signature_polymorphic(iid)) { |
| if (is_signature_polymorphic_static(iid)) |
| suffix = "/static"; |
| else |
| suffix = "/private"; |
| } |
| jio_snprintf(qname, len, "MethodHandle::interpreter_entry::%s%s", name, suffix); |
| trace_method_handle(_masm, qname); |
| // Note: Don't free the allocated char array because it's used |
| // during runtime. |
| } |
| } |
| }; |
| |
| |
| //------------------------------------------------------------------------------ |
| // MethodHandlesAdapterGenerator |
| // |
| class MethodHandlesAdapterGenerator : public StubCodeGenerator { |
| public: |
| MethodHandlesAdapterGenerator(CodeBuffer* code) : StubCodeGenerator(code, PrintMethodHandleStubs) {} |
| |
| void generate(); |
| }; |
| |
| #endif // SHARE_VM_PRIMS_METHODHANDLES_HPP |