1224 lines
46 KiB
C++
1224 lines
46 KiB
C++
/*
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* Copyright (c) 1997, 2010, 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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#include "incls/_precompiled.incl"
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#include "incls/_methodHandles_x86.cpp.incl"
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#define __ _masm->
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#ifdef PRODUCT
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#define BLOCK_COMMENT(str) /* nothing */
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#else
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#define BLOCK_COMMENT(str) __ block_comment(str)
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#endif
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#define BIND(label) bind(label); BLOCK_COMMENT(#label ":")
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address MethodHandleEntry::start_compiled_entry(MacroAssembler* _masm,
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address interpreted_entry) {
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// Just before the actual machine code entry point, allocate space
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// for a MethodHandleEntry::Data record, so that we can manage everything
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// from one base pointer.
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__ align(wordSize);
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address target = __ pc() + sizeof(Data);
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while (__ pc() < target) {
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__ nop();
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__ align(wordSize);
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}
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MethodHandleEntry* me = (MethodHandleEntry*) __ pc();
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me->set_end_address(__ pc()); // set a temporary end_address
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me->set_from_interpreted_entry(interpreted_entry);
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me->set_type_checking_entry(NULL);
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return (address) me;
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}
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MethodHandleEntry* MethodHandleEntry::finish_compiled_entry(MacroAssembler* _masm,
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address start_addr) {
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MethodHandleEntry* me = (MethodHandleEntry*) start_addr;
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assert(me->end_address() == start_addr, "valid ME");
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// Fill in the real end_address:
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__ align(wordSize);
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me->set_end_address(__ pc());
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return me;
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}
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#ifdef ASSERT
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static void verify_argslot(MacroAssembler* _masm, Register argslot_reg,
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const char* error_message) {
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// Verify that argslot lies within (rsp, rbp].
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Label L_ok, L_bad;
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BLOCK_COMMENT("{ verify_argslot");
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__ cmpptr(argslot_reg, rbp);
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__ jccb(Assembler::above, L_bad);
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__ cmpptr(rsp, argslot_reg);
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__ jccb(Assembler::below, L_ok);
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__ bind(L_bad);
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__ stop(error_message);
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__ bind(L_ok);
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BLOCK_COMMENT("} verify_argslot");
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}
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#endif
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// Code generation
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address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) {
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// rbx: methodOop
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// rcx: receiver method handle (must load from sp[MethodTypeForm.vmslots])
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// rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted)
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// rdx, rdi: garbage temp, blown away
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Register rbx_method = rbx;
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Register rcx_recv = rcx;
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Register rax_mtype = rax;
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Register rdx_temp = rdx;
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Register rdi_temp = rdi;
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// emit WrongMethodType path first, to enable jccb back-branch from main path
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Label wrong_method_type;
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__ bind(wrong_method_type);
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Label invoke_generic_slow_path;
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assert(methodOopDesc::intrinsic_id_size_in_bytes() == sizeof(u1), "");;
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__ cmpb(Address(rbx_method, methodOopDesc::intrinsic_id_offset_in_bytes()), (int) vmIntrinsics::_invokeExact);
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__ jcc(Assembler::notEqual, invoke_generic_slow_path);
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__ push(rax_mtype); // required mtype
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__ push(rcx_recv); // bad mh (1st stacked argument)
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__ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry()));
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// here's where control starts out:
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__ align(CodeEntryAlignment);
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address entry_point = __ pc();
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// fetch the MethodType from the method handle into rax (the 'check' register)
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{
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Register tem = rbx_method;
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for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) {
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__ movptr(rax_mtype, Address(tem, *pchase));
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tem = rax_mtype; // in case there is another indirection
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}
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}
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// given the MethodType, find out where the MH argument is buried
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__ movptr(rdx_temp, Address(rax_mtype,
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__ delayed_value(java_dyn_MethodType::form_offset_in_bytes, rdi_temp)));
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Register rdx_vmslots = rdx_temp;
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__ movl(rdx_vmslots, Address(rdx_temp,
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__ delayed_value(java_dyn_MethodTypeForm::vmslots_offset_in_bytes, rdi_temp)));
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__ movptr(rcx_recv, __ argument_address(rdx_vmslots));
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trace_method_handle(_masm, "invokeExact");
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__ check_method_handle_type(rax_mtype, rcx_recv, rdi_temp, wrong_method_type);
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__ jump_to_method_handle_entry(rcx_recv, rdi_temp);
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// for invokeGeneric (only), apply argument and result conversions on the fly
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__ bind(invoke_generic_slow_path);
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#ifdef ASSERT
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{ Label L;
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__ cmpb(Address(rbx_method, methodOopDesc::intrinsic_id_offset_in_bytes()), (int) vmIntrinsics::_invokeGeneric);
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__ jcc(Assembler::equal, L);
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__ stop("bad methodOop::intrinsic_id");
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__ bind(L);
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}
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#endif //ASSERT
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Register rbx_temp = rbx_method; // don't need it now
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// make room on the stack for another pointer:
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Register rcx_argslot = rcx_recv;
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__ lea(rcx_argslot, __ argument_address(rdx_vmslots, 1));
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insert_arg_slots(_masm, 2 * stack_move_unit(), _INSERT_REF_MASK,
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rcx_argslot, rbx_temp, rdx_temp);
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// load up an adapter from the calling type (Java weaves this)
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__ movptr(rdx_temp, Address(rax_mtype,
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__ delayed_value(java_dyn_MethodType::form_offset_in_bytes, rdi_temp)));
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Register rdx_adapter = rdx_temp;
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// movptr(rdx_adapter, Address(rdx_temp, java_dyn_MethodTypeForm::genericInvoker_offset_in_bytes()));
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// deal with old JDK versions:
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__ lea(rdi_temp, Address(rdx_temp,
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__ delayed_value(java_dyn_MethodTypeForm::genericInvoker_offset_in_bytes, rdi_temp)));
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__ cmpptr(rdi_temp, rdx_temp);
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Label sorry_no_invoke_generic;
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__ jccb(Assembler::below, sorry_no_invoke_generic);
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__ movptr(rdx_adapter, Address(rdi_temp, 0));
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__ testptr(rdx_adapter, rdx_adapter);
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__ jccb(Assembler::zero, sorry_no_invoke_generic);
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__ movptr(Address(rcx_argslot, 1 * Interpreter::stackElementSize), rdx_adapter);
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// As a trusted first argument, pass the type being called, so the adapter knows
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// the actual types of the arguments and return values.
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// (Generic invokers are shared among form-families of method-type.)
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__ movptr(Address(rcx_argslot, 0 * Interpreter::stackElementSize), rax_mtype);
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// FIXME: assert that rdx_adapter is of the right method-type.
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__ mov(rcx, rdx_adapter);
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trace_method_handle(_masm, "invokeGeneric");
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__ jump_to_method_handle_entry(rcx, rdi_temp);
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__ bind(sorry_no_invoke_generic); // no invokeGeneric implementation available!
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__ movptr(rcx_recv, Address(rcx_argslot, -1 * Interpreter::stackElementSize)); // recover original MH
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__ push(rax_mtype); // required mtype
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__ push(rcx_recv); // bad mh (1st stacked argument)
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__ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry()));
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return entry_point;
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}
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// Helper to insert argument slots into the stack.
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// arg_slots must be a multiple of stack_move_unit() and <= 0
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void MethodHandles::insert_arg_slots(MacroAssembler* _masm,
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RegisterOrConstant arg_slots,
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int arg_mask,
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Register rax_argslot,
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Register rbx_temp, Register rdx_temp, Register temp3_reg) {
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assert(temp3_reg == noreg, "temp3 not required");
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assert_different_registers(rax_argslot, rbx_temp, rdx_temp,
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(!arg_slots.is_register() ? rsp : arg_slots.as_register()));
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#ifdef ASSERT
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verify_argslot(_masm, rax_argslot, "insertion point must fall within current frame");
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if (arg_slots.is_register()) {
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Label L_ok, L_bad;
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__ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD);
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__ jccb(Assembler::greater, L_bad);
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__ testl(arg_slots.as_register(), -stack_move_unit() - 1);
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__ jccb(Assembler::zero, L_ok);
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__ bind(L_bad);
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__ stop("assert arg_slots <= 0 and clear low bits");
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__ bind(L_ok);
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} else {
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assert(arg_slots.as_constant() <= 0, "");
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assert(arg_slots.as_constant() % -stack_move_unit() == 0, "");
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}
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#endif //ASSERT
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#ifdef _LP64
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if (arg_slots.is_register()) {
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// clean high bits of stack motion register (was loaded as an int)
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__ movslq(arg_slots.as_register(), arg_slots.as_register());
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}
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#endif
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// Make space on the stack for the inserted argument(s).
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// Then pull down everything shallower than rax_argslot.
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// The stacked return address gets pulled down with everything else.
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// That is, copy [rsp, argslot) downward by -size words. In pseudo-code:
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// rsp -= size;
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// for (rdx = rsp + size; rdx < argslot; rdx++)
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// rdx[-size] = rdx[0]
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// argslot -= size;
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BLOCK_COMMENT("insert_arg_slots {");
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__ mov(rdx_temp, rsp); // source pointer for copy
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__ lea(rsp, Address(rsp, arg_slots, Address::times_ptr));
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{
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Label loop;
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__ BIND(loop);
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// pull one word down each time through the loop
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__ movptr(rbx_temp, Address(rdx_temp, 0));
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__ movptr(Address(rdx_temp, arg_slots, Address::times_ptr), rbx_temp);
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__ addptr(rdx_temp, wordSize);
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__ cmpptr(rdx_temp, rax_argslot);
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__ jccb(Assembler::less, loop);
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}
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// Now move the argslot down, to point to the opened-up space.
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__ lea(rax_argslot, Address(rax_argslot, arg_slots, Address::times_ptr));
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BLOCK_COMMENT("} insert_arg_slots");
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}
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// Helper to remove argument slots from the stack.
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// arg_slots must be a multiple of stack_move_unit() and >= 0
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void MethodHandles::remove_arg_slots(MacroAssembler* _masm,
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RegisterOrConstant arg_slots,
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Register rax_argslot,
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Register rbx_temp, Register rdx_temp, Register temp3_reg) {
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assert(temp3_reg == noreg, "temp3 not required");
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assert_different_registers(rax_argslot, rbx_temp, rdx_temp,
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(!arg_slots.is_register() ? rsp : arg_slots.as_register()));
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#ifdef ASSERT
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// Verify that [argslot..argslot+size) lies within (rsp, rbp).
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__ lea(rbx_temp, Address(rax_argslot, arg_slots, Address::times_ptr));
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verify_argslot(_masm, rbx_temp, "deleted argument(s) must fall within current frame");
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if (arg_slots.is_register()) {
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Label L_ok, L_bad;
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__ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD);
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__ jccb(Assembler::less, L_bad);
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__ testl(arg_slots.as_register(), -stack_move_unit() - 1);
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__ jccb(Assembler::zero, L_ok);
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__ bind(L_bad);
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__ stop("assert arg_slots >= 0 and clear low bits");
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__ bind(L_ok);
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} else {
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assert(arg_slots.as_constant() >= 0, "");
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assert(arg_slots.as_constant() % -stack_move_unit() == 0, "");
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}
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#endif //ASSERT
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#ifdef _LP64
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if (false) { // not needed, since register is positive
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// clean high bits of stack motion register (was loaded as an int)
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if (arg_slots.is_register())
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__ movslq(arg_slots.as_register(), arg_slots.as_register());
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}
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#endif
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BLOCK_COMMENT("remove_arg_slots {");
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// Pull up everything shallower than rax_argslot.
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// Then remove the excess space on the stack.
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// The stacked return address gets pulled up with everything else.
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// That is, copy [rsp, argslot) upward by size words. In pseudo-code:
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// for (rdx = argslot-1; rdx >= rsp; --rdx)
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// rdx[size] = rdx[0]
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// argslot += size;
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// rsp += size;
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__ lea(rdx_temp, Address(rax_argslot, -wordSize)); // source pointer for copy
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{
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Label loop;
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__ BIND(loop);
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// pull one word up each time through the loop
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__ movptr(rbx_temp, Address(rdx_temp, 0));
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__ movptr(Address(rdx_temp, arg_slots, Address::times_ptr), rbx_temp);
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__ addptr(rdx_temp, -wordSize);
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__ cmpptr(rdx_temp, rsp);
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__ jccb(Assembler::greaterEqual, loop);
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}
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// Now move the argslot up, to point to the just-copied block.
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__ lea(rsp, Address(rsp, arg_slots, Address::times_ptr));
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// And adjust the argslot address to point at the deletion point.
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__ lea(rax_argslot, Address(rax_argslot, arg_slots, Address::times_ptr));
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BLOCK_COMMENT("} remove_arg_slots");
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}
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#ifndef PRODUCT
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extern "C" void print_method_handle(oop mh);
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void trace_method_handle_stub(const char* adaptername,
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oop mh,
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intptr_t* saved_regs,
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intptr_t* entry_sp,
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intptr_t* saved_sp,
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intptr_t* saved_bp) {
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// called as a leaf from native code: do not block the JVM!
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intptr_t* last_sp = (intptr_t*) saved_bp[frame::interpreter_frame_last_sp_offset];
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intptr_t* base_sp = (intptr_t*) saved_bp[frame::interpreter_frame_monitor_block_top_offset];
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printf("MH %s mh="INTPTR_FORMAT" sp=("INTPTR_FORMAT"+"INTX_FORMAT") stack_size="INTX_FORMAT" bp="INTPTR_FORMAT"\n",
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adaptername, (intptr_t)mh, (intptr_t)entry_sp, (intptr_t)(saved_sp - entry_sp), (intptr_t)(base_sp - last_sp), (intptr_t)saved_bp);
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if (last_sp != saved_sp && last_sp != NULL)
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printf("*** last_sp="INTPTR_FORMAT"\n", (intptr_t)last_sp);
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if (Verbose) {
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printf(" reg dump: ");
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int saved_regs_count = (entry_sp-1) - saved_regs;
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// 32 bit: rdi rsi rbp rsp; rbx rdx rcx (*) rax
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int i;
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for (i = 0; i <= saved_regs_count; i++) {
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if (i > 0 && i % 4 == 0 && i != saved_regs_count)
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printf("\n + dump: ");
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printf(" %d: "INTPTR_FORMAT, i, saved_regs[i]);
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}
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printf("\n");
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int stack_dump_count = 16;
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if (stack_dump_count < (int)(saved_bp + 2 - saved_sp))
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stack_dump_count = (int)(saved_bp + 2 - saved_sp);
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if (stack_dump_count > 64) stack_dump_count = 48;
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for (i = 0; i < stack_dump_count; i += 4) {
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printf(" dump at SP[%d] "INTPTR_FORMAT": "INTPTR_FORMAT" "INTPTR_FORMAT" "INTPTR_FORMAT" "INTPTR_FORMAT"\n",
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i, (intptr_t) &entry_sp[i+0], entry_sp[i+0], entry_sp[i+1], entry_sp[i+2], entry_sp[i+3]);
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}
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print_method_handle(mh);
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}
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}
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void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) {
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if (!TraceMethodHandles) return;
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BLOCK_COMMENT("trace_method_handle {");
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__ push(rax);
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__ lea(rax, Address(rsp, wordSize*6)); // entry_sp
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__ pusha();
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// arguments:
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__ push(rbp); // interpreter frame pointer
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__ push(rsi); // saved_sp
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__ push(rax); // entry_sp
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__ push(rcx); // mh
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__ push(rcx);
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__ movptr(Address(rsp, 0), (intptr_t) adaptername);
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__ call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub), 5);
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__ popa();
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__ pop(rax);
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BLOCK_COMMENT("} trace_method_handle");
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}
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#endif //PRODUCT
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// which conversion op types are implemented here?
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int MethodHandles::adapter_conversion_ops_supported_mask() {
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return ((1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_ONLY)
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|(1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_RAW)
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|(1<<sun_dyn_AdapterMethodHandle::OP_CHECK_CAST)
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|(1<<sun_dyn_AdapterMethodHandle::OP_PRIM_TO_PRIM)
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|(1<<sun_dyn_AdapterMethodHandle::OP_REF_TO_PRIM)
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|(1<<sun_dyn_AdapterMethodHandle::OP_SWAP_ARGS)
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|(1<<sun_dyn_AdapterMethodHandle::OP_ROT_ARGS)
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|(1<<sun_dyn_AdapterMethodHandle::OP_DUP_ARGS)
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|(1<<sun_dyn_AdapterMethodHandle::OP_DROP_ARGS)
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//|(1<<sun_dyn_AdapterMethodHandle::OP_SPREAD_ARGS) //BUG!
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);
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// FIXME: MethodHandlesTest gets a crash if we enable OP_SPREAD_ARGS.
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}
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// Generate an "entry" field for a method handle.
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// This determines how the method handle will respond to calls.
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void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) {
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// Here is the register state during an interpreted call,
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// as set up by generate_method_handle_interpreter_entry():
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// - rbx: garbage temp (was MethodHandle.invoke methodOop, unused)
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// - rcx: receiver method handle
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// - rax: method handle type (only used by the check_mtype entry point)
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// - rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted)
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// - rdx: garbage temp, can blow away
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Register rcx_recv = rcx;
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Register rax_argslot = rax;
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Register rbx_temp = rbx;
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Register rdx_temp = rdx;
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// This guy is set up by prepare_to_jump_from_interpreted (from interpreted calls)
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// and gen_c2i_adapter (from compiled calls):
|
|
Register saved_last_sp = LP64_ONLY(r13) NOT_LP64(rsi);
|
|
|
|
guarantee(java_dyn_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets");
|
|
|
|
// some handy addresses
|
|
Address rbx_method_fie( rbx, methodOopDesc::from_interpreted_offset() );
|
|
|
|
Address rcx_mh_vmtarget( rcx_recv, java_dyn_MethodHandle::vmtarget_offset_in_bytes() );
|
|
Address rcx_dmh_vmindex( rcx_recv, sun_dyn_DirectMethodHandle::vmindex_offset_in_bytes() );
|
|
|
|
Address rcx_bmh_vmargslot( rcx_recv, sun_dyn_BoundMethodHandle::vmargslot_offset_in_bytes() );
|
|
Address rcx_bmh_argument( rcx_recv, sun_dyn_BoundMethodHandle::argument_offset_in_bytes() );
|
|
|
|
Address rcx_amh_vmargslot( rcx_recv, sun_dyn_AdapterMethodHandle::vmargslot_offset_in_bytes() );
|
|
Address rcx_amh_argument( rcx_recv, sun_dyn_AdapterMethodHandle::argument_offset_in_bytes() );
|
|
Address rcx_amh_conversion( rcx_recv, sun_dyn_AdapterMethodHandle::conversion_offset_in_bytes() );
|
|
Address vmarg; // __ argument_address(vmargslot)
|
|
|
|
const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes();
|
|
|
|
if (have_entry(ek)) {
|
|
__ nop(); // empty stubs make SG sick
|
|
return;
|
|
}
|
|
|
|
address interp_entry = __ pc();
|
|
if (UseCompressedOops) __ unimplemented("UseCompressedOops");
|
|
|
|
trace_method_handle(_masm, entry_name(ek));
|
|
|
|
BLOCK_COMMENT(entry_name(ek));
|
|
|
|
switch ((int) ek) {
|
|
case _raise_exception:
|
|
{
|
|
// Not a real MH entry, but rather shared code for raising an exception.
|
|
// Extra local arguments are pushed on stack, as required type at TOS+8,
|
|
// failing object (or NULL) at TOS+4, failing bytecode type at TOS.
|
|
// Beyond those local arguments are the PC, of course.
|
|
Register rdx_code = rdx_temp;
|
|
Register rcx_fail = rcx_recv;
|
|
Register rax_want = rax_argslot;
|
|
Register rdi_pc = rdi;
|
|
__ pop(rdx_code); // TOS+0
|
|
__ pop(rcx_fail); // TOS+4
|
|
__ pop(rax_want); // TOS+8
|
|
__ pop(rdi_pc); // caller PC
|
|
|
|
__ mov(rsp, rsi); // cut the stack back to where the caller started
|
|
|
|
// Repush the arguments as if coming from the interpreter.
|
|
__ push(rdx_code);
|
|
__ push(rcx_fail);
|
|
__ push(rax_want);
|
|
|
|
Register rbx_method = rbx_temp;
|
|
Label no_method;
|
|
// FIXME: fill in _raise_exception_method with a suitable sun.dyn method
|
|
__ movptr(rbx_method, ExternalAddress((address) &_raise_exception_method));
|
|
__ testptr(rbx_method, rbx_method);
|
|
__ jccb(Assembler::zero, no_method);
|
|
int jobject_oop_offset = 0;
|
|
__ movptr(rbx_method, Address(rbx_method, jobject_oop_offset)); // dereference the jobject
|
|
__ testptr(rbx_method, rbx_method);
|
|
__ jccb(Assembler::zero, no_method);
|
|
__ verify_oop(rbx_method);
|
|
__ push(rdi_pc); // and restore caller PC
|
|
__ jmp(rbx_method_fie);
|
|
|
|
// If we get here, the Java runtime did not do its job of creating the exception.
|
|
// Do something that is at least causes a valid throw from the interpreter.
|
|
__ bind(no_method);
|
|
__ pop(rax_want);
|
|
__ pop(rcx_fail);
|
|
__ push(rax_want);
|
|
__ push(rcx_fail);
|
|
__ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry()));
|
|
}
|
|
break;
|
|
|
|
case _invokestatic_mh:
|
|
case _invokespecial_mh:
|
|
{
|
|
Register rbx_method = rbx_temp;
|
|
__ movptr(rbx_method, rcx_mh_vmtarget); // target is a methodOop
|
|
__ verify_oop(rbx_method);
|
|
// same as TemplateTable::invokestatic or invokespecial,
|
|
// minus the CP setup and profiling:
|
|
if (ek == _invokespecial_mh) {
|
|
// Must load & check the first argument before entering the target method.
|
|
__ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp);
|
|
__ movptr(rcx_recv, __ argument_address(rax_argslot, -1));
|
|
__ null_check(rcx_recv);
|
|
__ verify_oop(rcx_recv);
|
|
}
|
|
__ jmp(rbx_method_fie);
|
|
}
|
|
break;
|
|
|
|
case _invokevirtual_mh:
|
|
{
|
|
// same as TemplateTable::invokevirtual,
|
|
// minus the CP setup and profiling:
|
|
|
|
// pick out the vtable index and receiver offset from the MH,
|
|
// and then we can discard it:
|
|
__ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp);
|
|
Register rbx_index = rbx_temp;
|
|
__ movl(rbx_index, rcx_dmh_vmindex);
|
|
// Note: The verifier allows us to ignore rcx_mh_vmtarget.
|
|
__ movptr(rcx_recv, __ argument_address(rax_argslot, -1));
|
|
__ null_check(rcx_recv, oopDesc::klass_offset_in_bytes());
|
|
|
|
// get receiver klass
|
|
Register rax_klass = rax_argslot;
|
|
__ load_klass(rax_klass, rcx_recv);
|
|
__ verify_oop(rax_klass);
|
|
|
|
// get target methodOop & entry point
|
|
const int base = instanceKlass::vtable_start_offset() * wordSize;
|
|
assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below");
|
|
Address vtable_entry_addr(rax_klass,
|
|
rbx_index, Address::times_ptr,
|
|
base + vtableEntry::method_offset_in_bytes());
|
|
Register rbx_method = rbx_temp;
|
|
__ movptr(rbx_method, vtable_entry_addr);
|
|
|
|
__ verify_oop(rbx_method);
|
|
__ jmp(rbx_method_fie);
|
|
}
|
|
break;
|
|
|
|
case _invokeinterface_mh:
|
|
{
|
|
// same as TemplateTable::invokeinterface,
|
|
// minus the CP setup and profiling:
|
|
|
|
// pick out the interface and itable index from the MH.
|
|
__ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp);
|
|
Register rdx_intf = rdx_temp;
|
|
Register rbx_index = rbx_temp;
|
|
__ movptr(rdx_intf, rcx_mh_vmtarget);
|
|
__ movl(rbx_index, rcx_dmh_vmindex);
|
|
__ movptr(rcx_recv, __ argument_address(rax_argslot, -1));
|
|
__ null_check(rcx_recv, oopDesc::klass_offset_in_bytes());
|
|
|
|
// get receiver klass
|
|
Register rax_klass = rax_argslot;
|
|
__ load_klass(rax_klass, rcx_recv);
|
|
__ verify_oop(rax_klass);
|
|
|
|
Register rdi_temp = rdi;
|
|
Register rbx_method = rbx_index;
|
|
|
|
// get interface klass
|
|
Label no_such_interface;
|
|
__ verify_oop(rdx_intf);
|
|
__ lookup_interface_method(rax_klass, rdx_intf,
|
|
// note: next two args must be the same:
|
|
rbx_index, rbx_method,
|
|
rdi_temp,
|
|
no_such_interface);
|
|
|
|
__ verify_oop(rbx_method);
|
|
__ jmp(rbx_method_fie);
|
|
__ hlt();
|
|
|
|
__ bind(no_such_interface);
|
|
// Throw an exception.
|
|
// For historical reasons, it will be IncompatibleClassChangeError.
|
|
__ pushptr(Address(rdx_intf, java_mirror_offset)); // required interface
|
|
__ push(rcx_recv); // bad receiver
|
|
__ push((int)Bytecodes::_invokeinterface); // who is complaining?
|
|
__ jump(ExternalAddress(from_interpreted_entry(_raise_exception)));
|
|
}
|
|
break;
|
|
|
|
case _bound_ref_mh:
|
|
case _bound_int_mh:
|
|
case _bound_long_mh:
|
|
case _bound_ref_direct_mh:
|
|
case _bound_int_direct_mh:
|
|
case _bound_long_direct_mh:
|
|
{
|
|
bool direct_to_method = (ek >= _bound_ref_direct_mh);
|
|
BasicType arg_type = T_ILLEGAL;
|
|
int arg_mask = _INSERT_NO_MASK;
|
|
int arg_slots = -1;
|
|
get_ek_bound_mh_info(ek, arg_type, arg_mask, arg_slots);
|
|
|
|
// make room for the new argument:
|
|
__ movl(rax_argslot, rcx_bmh_vmargslot);
|
|
__ lea(rax_argslot, __ argument_address(rax_argslot));
|
|
insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask,
|
|
rax_argslot, rbx_temp, rdx_temp);
|
|
|
|
// store bound argument into the new stack slot:
|
|
__ movptr(rbx_temp, rcx_bmh_argument);
|
|
Address prim_value_addr(rbx_temp, java_lang_boxing_object::value_offset_in_bytes(arg_type));
|
|
if (arg_type == T_OBJECT) {
|
|
__ movptr(Address(rax_argslot, 0), rbx_temp);
|
|
} else {
|
|
__ load_sized_value(rdx_temp, prim_value_addr,
|
|
type2aelembytes(arg_type), is_signed_subword_type(arg_type));
|
|
__ movptr(Address(rax_argslot, 0), rdx_temp);
|
|
#ifndef _LP64
|
|
if (arg_slots == 2) {
|
|
__ movl(rdx_temp, prim_value_addr.plus_disp(wordSize));
|
|
__ movl(Address(rax_argslot, Interpreter::stackElementSize), rdx_temp);
|
|
}
|
|
#endif //_LP64
|
|
}
|
|
|
|
if (direct_to_method) {
|
|
Register rbx_method = rbx_temp;
|
|
__ movptr(rbx_method, rcx_mh_vmtarget);
|
|
__ verify_oop(rbx_method);
|
|
__ jmp(rbx_method_fie);
|
|
} else {
|
|
__ movptr(rcx_recv, rcx_mh_vmtarget);
|
|
__ verify_oop(rcx_recv);
|
|
__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case _adapter_retype_only:
|
|
case _adapter_retype_raw:
|
|
// immediately jump to the next MH layer:
|
|
__ movptr(rcx_recv, rcx_mh_vmtarget);
|
|
__ verify_oop(rcx_recv);
|
|
__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
|
|
// This is OK when all parameter types widen.
|
|
// It is also OK when a return type narrows.
|
|
break;
|
|
|
|
case _adapter_check_cast:
|
|
{
|
|
// temps:
|
|
Register rbx_klass = rbx_temp; // interesting AMH data
|
|
|
|
// check a reference argument before jumping to the next layer of MH:
|
|
__ movl(rax_argslot, rcx_amh_vmargslot);
|
|
vmarg = __ argument_address(rax_argslot);
|
|
|
|
// What class are we casting to?
|
|
__ movptr(rbx_klass, rcx_amh_argument); // this is a Class object!
|
|
__ movptr(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes()));
|
|
|
|
Label done;
|
|
__ movptr(rdx_temp, vmarg);
|
|
__ testptr(rdx_temp, rdx_temp);
|
|
__ jccb(Assembler::zero, done); // no cast if null
|
|
__ load_klass(rdx_temp, rdx_temp);
|
|
|
|
// live at this point:
|
|
// - rbx_klass: klass required by the target method
|
|
// - rdx_temp: argument klass to test
|
|
// - rcx_recv: adapter method handle
|
|
__ check_klass_subtype(rdx_temp, rbx_klass, rax_argslot, done);
|
|
|
|
// If we get here, the type check failed!
|
|
// Call the wrong_method_type stub, passing the failing argument type in rax.
|
|
Register rax_mtype = rax_argslot;
|
|
__ movl(rax_argslot, rcx_amh_vmargslot); // reload argslot field
|
|
__ movptr(rdx_temp, vmarg);
|
|
|
|
__ pushptr(rcx_amh_argument); // required class
|
|
__ push(rdx_temp); // bad object
|
|
__ push((int)Bytecodes::_checkcast); // who is complaining?
|
|
__ jump(ExternalAddress(from_interpreted_entry(_raise_exception)));
|
|
|
|
__ bind(done);
|
|
// get the new MH:
|
|
__ movptr(rcx_recv, rcx_mh_vmtarget);
|
|
__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
|
|
}
|
|
break;
|
|
|
|
case _adapter_prim_to_prim:
|
|
case _adapter_ref_to_prim:
|
|
// handled completely by optimized cases
|
|
__ stop("init_AdapterMethodHandle should not issue this");
|
|
break;
|
|
|
|
case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim
|
|
//case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim
|
|
case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim
|
|
case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim
|
|
{
|
|
// perform an in-place conversion to int or an int subword
|
|
__ movl(rax_argslot, rcx_amh_vmargslot);
|
|
vmarg = __ argument_address(rax_argslot);
|
|
|
|
switch (ek) {
|
|
case _adapter_opt_i2i:
|
|
__ movl(rdx_temp, vmarg);
|
|
break;
|
|
case _adapter_opt_l2i:
|
|
{
|
|
// just delete the extra slot; on a little-endian machine we keep the first
|
|
__ lea(rax_argslot, __ argument_address(rax_argslot, 1));
|
|
remove_arg_slots(_masm, -stack_move_unit(),
|
|
rax_argslot, rbx_temp, rdx_temp);
|
|
vmarg = Address(rax_argslot, -Interpreter::stackElementSize);
|
|
__ movl(rdx_temp, vmarg);
|
|
}
|
|
break;
|
|
case _adapter_opt_unboxi:
|
|
{
|
|
// Load the value up from the heap.
|
|
__ movptr(rdx_temp, vmarg);
|
|
int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT);
|
|
#ifdef ASSERT
|
|
for (int bt = T_BOOLEAN; bt < T_INT; bt++) {
|
|
if (is_subword_type(BasicType(bt)))
|
|
assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), "");
|
|
}
|
|
#endif
|
|
__ null_check(rdx_temp, value_offset);
|
|
__ movl(rdx_temp, Address(rdx_temp, value_offset));
|
|
// We load this as a word. Because we are little-endian,
|
|
// the low bits will be correct, but the high bits may need cleaning.
|
|
// The vminfo will guide us to clean those bits.
|
|
}
|
|
break;
|
|
default:
|
|
ShouldNotReachHere();
|
|
}
|
|
|
|
// Do the requested conversion and store the value.
|
|
Register rbx_vminfo = rbx_temp;
|
|
__ movl(rbx_vminfo, rcx_amh_conversion);
|
|
assert(CONV_VMINFO_SHIFT == 0, "preshifted");
|
|
|
|
// get the new MH:
|
|
__ movptr(rcx_recv, rcx_mh_vmtarget);
|
|
// (now we are done with the old MH)
|
|
|
|
// original 32-bit vmdata word must be of this form:
|
|
// | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 |
|
|
__ xchgptr(rcx, rbx_vminfo); // free rcx for shifts
|
|
__ shll(rdx_temp /*, rcx*/);
|
|
Label zero_extend, done;
|
|
__ testl(rcx, CONV_VMINFO_SIGN_FLAG);
|
|
__ jccb(Assembler::zero, zero_extend);
|
|
|
|
// this path is taken for int->byte, int->short
|
|
__ sarl(rdx_temp /*, rcx*/);
|
|
__ jmpb(done);
|
|
|
|
__ bind(zero_extend);
|
|
// this is taken for int->char
|
|
__ shrl(rdx_temp /*, rcx*/);
|
|
|
|
__ bind(done);
|
|
__ movl(vmarg, rdx_temp); // Store the value.
|
|
__ xchgptr(rcx, rbx_vminfo); // restore rcx_recv
|
|
|
|
__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
|
|
}
|
|
break;
|
|
|
|
case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim
|
|
case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim
|
|
{
|
|
// perform an in-place int-to-long or ref-to-long conversion
|
|
__ movl(rax_argslot, rcx_amh_vmargslot);
|
|
|
|
// on a little-endian machine we keep the first slot and add another after
|
|
__ lea(rax_argslot, __ argument_address(rax_argslot, 1));
|
|
insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK,
|
|
rax_argslot, rbx_temp, rdx_temp);
|
|
Address vmarg1(rax_argslot, -Interpreter::stackElementSize);
|
|
Address vmarg2 = vmarg1.plus_disp(Interpreter::stackElementSize);
|
|
|
|
switch (ek) {
|
|
case _adapter_opt_i2l:
|
|
{
|
|
#ifdef _LP64
|
|
__ movslq(rdx_temp, vmarg1); // Load sign-extended
|
|
__ movq(vmarg1, rdx_temp); // Store into first slot
|
|
#else
|
|
__ movl(rdx_temp, vmarg1);
|
|
__ sarl(rdx_temp, BitsPerInt - 1); // __ extend_sign()
|
|
__ movl(vmarg2, rdx_temp); // store second word
|
|
#endif
|
|
}
|
|
break;
|
|
case _adapter_opt_unboxl:
|
|
{
|
|
// Load the value up from the heap.
|
|
__ movptr(rdx_temp, vmarg1);
|
|
int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG);
|
|
assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), "");
|
|
__ null_check(rdx_temp, value_offset);
|
|
#ifdef _LP64
|
|
__ movq(rbx_temp, Address(rdx_temp, value_offset));
|
|
__ movq(vmarg1, rbx_temp);
|
|
#else
|
|
__ movl(rbx_temp, Address(rdx_temp, value_offset + 0*BytesPerInt));
|
|
__ movl(rdx_temp, Address(rdx_temp, value_offset + 1*BytesPerInt));
|
|
__ movl(vmarg1, rbx_temp);
|
|
__ movl(vmarg2, rdx_temp);
|
|
#endif
|
|
}
|
|
break;
|
|
default:
|
|
ShouldNotReachHere();
|
|
}
|
|
|
|
__ movptr(rcx_recv, rcx_mh_vmtarget);
|
|
__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
|
|
}
|
|
break;
|
|
|
|
case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim
|
|
case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim
|
|
{
|
|
// perform an in-place floating primitive conversion
|
|
__ movl(rax_argslot, rcx_amh_vmargslot);
|
|
__ lea(rax_argslot, __ argument_address(rax_argslot, 1));
|
|
if (ek == _adapter_opt_f2d) {
|
|
insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK,
|
|
rax_argslot, rbx_temp, rdx_temp);
|
|
}
|
|
Address vmarg(rax_argslot, -Interpreter::stackElementSize);
|
|
|
|
#ifdef _LP64
|
|
if (ek == _adapter_opt_f2d) {
|
|
__ movflt(xmm0, vmarg);
|
|
__ cvtss2sd(xmm0, xmm0);
|
|
__ movdbl(vmarg, xmm0);
|
|
} else {
|
|
__ movdbl(xmm0, vmarg);
|
|
__ cvtsd2ss(xmm0, xmm0);
|
|
__ movflt(vmarg, xmm0);
|
|
}
|
|
#else //_LP64
|
|
if (ek == _adapter_opt_f2d) {
|
|
__ fld_s(vmarg); // load float to ST0
|
|
__ fstp_s(vmarg); // store single
|
|
} else {
|
|
__ fld_d(vmarg); // load double to ST0
|
|
__ fstp_s(vmarg); // store single
|
|
}
|
|
#endif //_LP64
|
|
|
|
if (ek == _adapter_opt_d2f) {
|
|
remove_arg_slots(_masm, -stack_move_unit(),
|
|
rax_argslot, rbx_temp, rdx_temp);
|
|
}
|
|
|
|
__ movptr(rcx_recv, rcx_mh_vmtarget);
|
|
__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
|
|
}
|
|
break;
|
|
|
|
case _adapter_prim_to_ref:
|
|
__ unimplemented(entry_name(ek)); // %%% FIXME: NYI
|
|
break;
|
|
|
|
case _adapter_swap_args:
|
|
case _adapter_rot_args:
|
|
// handled completely by optimized cases
|
|
__ stop("init_AdapterMethodHandle should not issue this");
|
|
break;
|
|
|
|
case _adapter_opt_swap_1:
|
|
case _adapter_opt_swap_2:
|
|
case _adapter_opt_rot_1_up:
|
|
case _adapter_opt_rot_1_down:
|
|
case _adapter_opt_rot_2_up:
|
|
case _adapter_opt_rot_2_down:
|
|
{
|
|
int swap_bytes = 0, rotate = 0;
|
|
get_ek_adapter_opt_swap_rot_info(ek, swap_bytes, rotate);
|
|
|
|
// 'argslot' is the position of the first argument to swap
|
|
__ movl(rax_argslot, rcx_amh_vmargslot);
|
|
__ lea(rax_argslot, __ argument_address(rax_argslot));
|
|
|
|
// 'vminfo' is the second
|
|
Register rbx_destslot = rbx_temp;
|
|
__ movl(rbx_destslot, rcx_amh_conversion);
|
|
assert(CONV_VMINFO_SHIFT == 0, "preshifted");
|
|
__ andl(rbx_destslot, CONV_VMINFO_MASK);
|
|
__ lea(rbx_destslot, __ argument_address(rbx_destslot));
|
|
DEBUG_ONLY(verify_argslot(_masm, rbx_destslot, "swap point must fall within current frame"));
|
|
|
|
if (!rotate) {
|
|
for (int i = 0; i < swap_bytes; i += wordSize) {
|
|
__ movptr(rdx_temp, Address(rax_argslot , i));
|
|
__ push(rdx_temp);
|
|
__ movptr(rdx_temp, Address(rbx_destslot, i));
|
|
__ movptr(Address(rax_argslot, i), rdx_temp);
|
|
__ pop(rdx_temp);
|
|
__ movptr(Address(rbx_destslot, i), rdx_temp);
|
|
}
|
|
} else {
|
|
// push the first chunk, which is going to get overwritten
|
|
for (int i = swap_bytes; (i -= wordSize) >= 0; ) {
|
|
__ movptr(rdx_temp, Address(rax_argslot, i));
|
|
__ push(rdx_temp);
|
|
}
|
|
|
|
if (rotate > 0) {
|
|
// rotate upward
|
|
__ subptr(rax_argslot, swap_bytes);
|
|
#ifdef ASSERT
|
|
{
|
|
// Verify that argslot > destslot, by at least swap_bytes.
|
|
Label L_ok;
|
|
__ cmpptr(rax_argslot, rbx_destslot);
|
|
__ jccb(Assembler::aboveEqual, L_ok);
|
|
__ stop("source must be above destination (upward rotation)");
|
|
__ bind(L_ok);
|
|
}
|
|
#endif
|
|
// work argslot down to destslot, copying contiguous data upwards
|
|
// pseudo-code:
|
|
// rax = src_addr - swap_bytes
|
|
// rbx = dest_addr
|
|
// while (rax >= rbx) *(rax + swap_bytes) = *(rax + 0), rax--;
|
|
Label loop;
|
|
__ bind(loop);
|
|
__ movptr(rdx_temp, Address(rax_argslot, 0));
|
|
__ movptr(Address(rax_argslot, swap_bytes), rdx_temp);
|
|
__ addptr(rax_argslot, -wordSize);
|
|
__ cmpptr(rax_argslot, rbx_destslot);
|
|
__ jccb(Assembler::aboveEqual, loop);
|
|
} else {
|
|
__ addptr(rax_argslot, swap_bytes);
|
|
#ifdef ASSERT
|
|
{
|
|
// Verify that argslot < destslot, by at least swap_bytes.
|
|
Label L_ok;
|
|
__ cmpptr(rax_argslot, rbx_destslot);
|
|
__ jccb(Assembler::belowEqual, L_ok);
|
|
__ stop("source must be below destination (downward rotation)");
|
|
__ bind(L_ok);
|
|
}
|
|
#endif
|
|
// work argslot up to destslot, copying contiguous data downwards
|
|
// pseudo-code:
|
|
// rax = src_addr + swap_bytes
|
|
// rbx = dest_addr
|
|
// while (rax <= rbx) *(rax - swap_bytes) = *(rax + 0), rax++;
|
|
Label loop;
|
|
__ bind(loop);
|
|
__ movptr(rdx_temp, Address(rax_argslot, 0));
|
|
__ movptr(Address(rax_argslot, -swap_bytes), rdx_temp);
|
|
__ addptr(rax_argslot, wordSize);
|
|
__ cmpptr(rax_argslot, rbx_destslot);
|
|
__ jccb(Assembler::belowEqual, loop);
|
|
}
|
|
|
|
// pop the original first chunk into the destination slot, now free
|
|
for (int i = 0; i < swap_bytes; i += wordSize) {
|
|
__ pop(rdx_temp);
|
|
__ movptr(Address(rbx_destslot, i), rdx_temp);
|
|
}
|
|
}
|
|
|
|
__ movptr(rcx_recv, rcx_mh_vmtarget);
|
|
__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
|
|
}
|
|
break;
|
|
|
|
case _adapter_dup_args:
|
|
{
|
|
// 'argslot' is the position of the first argument to duplicate
|
|
__ movl(rax_argslot, rcx_amh_vmargslot);
|
|
__ lea(rax_argslot, __ argument_address(rax_argslot));
|
|
|
|
// 'stack_move' is negative number of words to duplicate
|
|
Register rdx_stack_move = rdx_temp;
|
|
__ movl2ptr(rdx_stack_move, rcx_amh_conversion);
|
|
__ sarptr(rdx_stack_move, CONV_STACK_MOVE_SHIFT);
|
|
|
|
int argslot0_num = 0;
|
|
Address argslot0 = __ argument_address(RegisterOrConstant(argslot0_num));
|
|
assert(argslot0.base() == rsp, "");
|
|
int pre_arg_size = argslot0.disp();
|
|
assert(pre_arg_size % wordSize == 0, "");
|
|
assert(pre_arg_size > 0, "must include PC");
|
|
|
|
// remember the old rsp+1 (argslot[0])
|
|
Register rbx_oldarg = rbx_temp;
|
|
__ lea(rbx_oldarg, argslot0);
|
|
|
|
// move rsp down to make room for dups
|
|
__ lea(rsp, Address(rsp, rdx_stack_move, Address::times_ptr));
|
|
|
|
// compute the new rsp+1 (argslot[0])
|
|
Register rdx_newarg = rdx_temp;
|
|
__ lea(rdx_newarg, argslot0);
|
|
|
|
__ push(rdi); // need a temp
|
|
// (preceding push must be done after arg addresses are taken!)
|
|
|
|
// pull down the pre_arg_size data (PC)
|
|
for (int i = -pre_arg_size; i < 0; i += wordSize) {
|
|
__ movptr(rdi, Address(rbx_oldarg, i));
|
|
__ movptr(Address(rdx_newarg, i), rdi);
|
|
}
|
|
|
|
// copy from rax_argslot[0...] down to new_rsp[1...]
|
|
// pseudo-code:
|
|
// rbx = old_rsp+1
|
|
// rdx = new_rsp+1
|
|
// rax = argslot
|
|
// while (rdx < rbx) *rdx++ = *rax++
|
|
Label loop;
|
|
__ bind(loop);
|
|
__ movptr(rdi, Address(rax_argslot, 0));
|
|
__ movptr(Address(rdx_newarg, 0), rdi);
|
|
__ addptr(rax_argslot, wordSize);
|
|
__ addptr(rdx_newarg, wordSize);
|
|
__ cmpptr(rdx_newarg, rbx_oldarg);
|
|
__ jccb(Assembler::less, loop);
|
|
|
|
__ pop(rdi); // restore temp
|
|
|
|
__ movptr(rcx_recv, rcx_mh_vmtarget);
|
|
__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
|
|
}
|
|
break;
|
|
|
|
case _adapter_drop_args:
|
|
{
|
|
// 'argslot' is the position of the first argument to nuke
|
|
__ movl(rax_argslot, rcx_amh_vmargslot);
|
|
__ lea(rax_argslot, __ argument_address(rax_argslot));
|
|
|
|
__ push(rdi); // need a temp
|
|
// (must do previous push after argslot address is taken)
|
|
|
|
// 'stack_move' is number of words to drop
|
|
Register rdi_stack_move = rdi;
|
|
__ movl2ptr(rdi_stack_move, rcx_amh_conversion);
|
|
__ sarptr(rdi_stack_move, CONV_STACK_MOVE_SHIFT);
|
|
remove_arg_slots(_masm, rdi_stack_move,
|
|
rax_argslot, rbx_temp, rdx_temp);
|
|
|
|
__ pop(rdi); // restore temp
|
|
|
|
__ movptr(rcx_recv, rcx_mh_vmtarget);
|
|
__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
|
|
}
|
|
break;
|
|
|
|
case _adapter_collect_args:
|
|
__ unimplemented(entry_name(ek)); // %%% FIXME: NYI
|
|
break;
|
|
|
|
case _adapter_spread_args:
|
|
// handled completely by optimized cases
|
|
__ stop("init_AdapterMethodHandle should not issue this");
|
|
break;
|
|
|
|
case _adapter_opt_spread_0:
|
|
case _adapter_opt_spread_1:
|
|
case _adapter_opt_spread_more:
|
|
{
|
|
// spread an array out into a group of arguments
|
|
int length_constant = get_ek_adapter_opt_spread_info(ek);
|
|
|
|
// find the address of the array argument
|
|
__ movl(rax_argslot, rcx_amh_vmargslot);
|
|
__ lea(rax_argslot, __ argument_address(rax_argslot));
|
|
|
|
// grab some temps
|
|
{ __ push(rsi); __ push(rdi); }
|
|
// (preceding pushes must be done after argslot address is taken!)
|
|
#define UNPUSH_RSI_RDI \
|
|
{ __ pop(rdi); __ pop(rsi); }
|
|
|
|
// arx_argslot points both to the array and to the first output arg
|
|
vmarg = Address(rax_argslot, 0);
|
|
|
|
// Get the array value.
|
|
Register rsi_array = rsi;
|
|
Register rdx_array_klass = rdx_temp;
|
|
BasicType elem_type = T_OBJECT;
|
|
int length_offset = arrayOopDesc::length_offset_in_bytes();
|
|
int elem0_offset = arrayOopDesc::base_offset_in_bytes(elem_type);
|
|
__ movptr(rsi_array, vmarg);
|
|
Label skip_array_check;
|
|
if (length_constant == 0) {
|
|
__ testptr(rsi_array, rsi_array);
|
|
__ jcc(Assembler::zero, skip_array_check);
|
|
}
|
|
__ null_check(rsi_array, oopDesc::klass_offset_in_bytes());
|
|
__ load_klass(rdx_array_klass, rsi_array);
|
|
|
|
// Check the array type.
|
|
Register rbx_klass = rbx_temp;
|
|
__ movptr(rbx_klass, rcx_amh_argument); // this is a Class object!
|
|
__ movptr(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes()));
|
|
|
|
Label ok_array_klass, bad_array_klass, bad_array_length;
|
|
__ check_klass_subtype(rdx_array_klass, rbx_klass, rdi, ok_array_klass);
|
|
// If we get here, the type check failed!
|
|
__ jmp(bad_array_klass);
|
|
__ bind(ok_array_klass);
|
|
|
|
// Check length.
|
|
if (length_constant >= 0) {
|
|
__ cmpl(Address(rsi_array, length_offset), length_constant);
|
|
} else {
|
|
Register rbx_vminfo = rbx_temp;
|
|
__ movl(rbx_vminfo, rcx_amh_conversion);
|
|
assert(CONV_VMINFO_SHIFT == 0, "preshifted");
|
|
__ andl(rbx_vminfo, CONV_VMINFO_MASK);
|
|
__ cmpl(rbx_vminfo, Address(rsi_array, length_offset));
|
|
}
|
|
__ jcc(Assembler::notEqual, bad_array_length);
|
|
|
|
Register rdx_argslot_limit = rdx_temp;
|
|
|
|
// Array length checks out. Now insert any required stack slots.
|
|
if (length_constant == -1) {
|
|
// Form a pointer to the end of the affected region.
|
|
__ lea(rdx_argslot_limit, Address(rax_argslot, Interpreter::stackElementSize));
|
|
// 'stack_move' is negative number of words to insert
|
|
Register rdi_stack_move = rdi;
|
|
__ movl2ptr(rdi_stack_move, rcx_amh_conversion);
|
|
__ sarptr(rdi_stack_move, CONV_STACK_MOVE_SHIFT);
|
|
Register rsi_temp = rsi_array; // spill this
|
|
insert_arg_slots(_masm, rdi_stack_move, -1,
|
|
rax_argslot, rbx_temp, rsi_temp);
|
|
// reload the array (since rsi was killed)
|
|
__ movptr(rsi_array, vmarg);
|
|
} else if (length_constant > 1) {
|
|
int arg_mask = 0;
|
|
int new_slots = (length_constant - 1);
|
|
for (int i = 0; i < new_slots; i++) {
|
|
arg_mask <<= 1;
|
|
arg_mask |= _INSERT_REF_MASK;
|
|
}
|
|
insert_arg_slots(_masm, new_slots * stack_move_unit(), arg_mask,
|
|
rax_argslot, rbx_temp, rdx_temp);
|
|
} else if (length_constant == 1) {
|
|
// no stack resizing required
|
|
} else if (length_constant == 0) {
|
|
remove_arg_slots(_masm, -stack_move_unit(),
|
|
rax_argslot, rbx_temp, rdx_temp);
|
|
}
|
|
|
|
// Copy from the array to the new slots.
|
|
// Note: Stack change code preserves integrity of rax_argslot pointer.
|
|
// So even after slot insertions, rax_argslot still points to first argument.
|
|
if (length_constant == -1) {
|
|
// [rax_argslot, rdx_argslot_limit) is the area we are inserting into.
|
|
Register rsi_source = rsi_array;
|
|
__ lea(rsi_source, Address(rsi_array, elem0_offset));
|
|
Label loop;
|
|
__ bind(loop);
|
|
__ movptr(rbx_temp, Address(rsi_source, 0));
|
|
__ movptr(Address(rax_argslot, 0), rbx_temp);
|
|
__ addptr(rsi_source, type2aelembytes(elem_type));
|
|
__ addptr(rax_argslot, Interpreter::stackElementSize);
|
|
__ cmpptr(rax_argslot, rdx_argslot_limit);
|
|
__ jccb(Assembler::less, loop);
|
|
} else if (length_constant == 0) {
|
|
__ bind(skip_array_check);
|
|
// nothing to copy
|
|
} else {
|
|
int elem_offset = elem0_offset;
|
|
int slot_offset = 0;
|
|
for (int index = 0; index < length_constant; index++) {
|
|
__ movptr(rbx_temp, Address(rsi_array, elem_offset));
|
|
__ movptr(Address(rax_argslot, slot_offset), rbx_temp);
|
|
elem_offset += type2aelembytes(elem_type);
|
|
slot_offset += Interpreter::stackElementSize;
|
|
}
|
|
}
|
|
|
|
// Arguments are spread. Move to next method handle.
|
|
UNPUSH_RSI_RDI;
|
|
__ movptr(rcx_recv, rcx_mh_vmtarget);
|
|
__ jump_to_method_handle_entry(rcx_recv, rdx_temp);
|
|
|
|
__ bind(bad_array_klass);
|
|
UNPUSH_RSI_RDI;
|
|
__ pushptr(Address(rdx_array_klass, java_mirror_offset)); // required type
|
|
__ pushptr(vmarg); // bad array
|
|
__ push((int)Bytecodes::_aaload); // who is complaining?
|
|
__ jump(ExternalAddress(from_interpreted_entry(_raise_exception)));
|
|
|
|
__ bind(bad_array_length);
|
|
UNPUSH_RSI_RDI;
|
|
__ push(rcx_recv); // AMH requiring a certain length
|
|
__ pushptr(vmarg); // bad array
|
|
__ push((int)Bytecodes::_arraylength); // who is complaining?
|
|
__ jump(ExternalAddress(from_interpreted_entry(_raise_exception)));
|
|
|
|
#undef UNPUSH_RSI_RDI
|
|
}
|
|
break;
|
|
|
|
case _adapter_flyby:
|
|
case _adapter_ricochet:
|
|
__ unimplemented(entry_name(ek)); // %%% FIXME: NYI
|
|
break;
|
|
|
|
default: ShouldNotReachHere();
|
|
}
|
|
__ hlt();
|
|
|
|
address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry);
|
|
__ unimplemented(entry_name(ek)); // %%% FIXME: NYI
|
|
|
|
init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie));
|
|
}
|