| /* |
| * Copyright (c) 1997, 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. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "interpreter/interpreter.hpp" |
| #include "memory/allocation.inline.hpp" |
| #include "prims/methodHandles.hpp" |
| |
| #define __ _masm-> |
| |
| #ifdef PRODUCT |
| #define BLOCK_COMMENT(str) /* nothing */ |
| #else |
| #define BLOCK_COMMENT(str) __ block_comment(str) |
| #endif |
| |
| #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") |
| |
| address MethodHandleEntry::start_compiled_entry(MacroAssembler* _masm, |
| address interpreted_entry) { |
| // Just before the actual machine code entry point, allocate space |
| // for a MethodHandleEntry::Data record, so that we can manage everything |
| // from one base pointer. |
| __ align(wordSize); |
| address target = __ pc() + sizeof(Data); |
| while (__ pc() < target) { |
| __ nop(); |
| __ align(wordSize); |
| } |
| |
| MethodHandleEntry* me = (MethodHandleEntry*) __ pc(); |
| me->set_end_address(__ pc()); // set a temporary end_address |
| me->set_from_interpreted_entry(interpreted_entry); |
| me->set_type_checking_entry(NULL); |
| |
| return (address) me; |
| } |
| |
| MethodHandleEntry* MethodHandleEntry::finish_compiled_entry(MacroAssembler* _masm, |
| address start_addr) { |
| MethodHandleEntry* me = (MethodHandleEntry*) start_addr; |
| assert(me->end_address() == start_addr, "valid ME"); |
| |
| // Fill in the real end_address: |
| __ align(wordSize); |
| me->set_end_address(__ pc()); |
| |
| return me; |
| } |
| |
| #ifdef ASSERT |
| static void verify_argslot(MacroAssembler* _masm, Register argslot_reg, |
| const char* error_message) { |
| // Verify that argslot lies within (rsp, rbp]. |
| Label L_ok, L_bad; |
| BLOCK_COMMENT("{ verify_argslot"); |
| __ cmpptr(argslot_reg, rbp); |
| __ jccb(Assembler::above, L_bad); |
| __ cmpptr(rsp, argslot_reg); |
| __ jccb(Assembler::below, L_ok); |
| __ bind(L_bad); |
| __ stop(error_message); |
| __ bind(L_ok); |
| BLOCK_COMMENT("} verify_argslot"); |
| } |
| #endif |
| |
| |
| // Code generation |
| address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) { |
| // rbx: methodOop |
| // rcx: receiver method handle (must load from sp[MethodTypeForm.vmslots]) |
| // rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted) |
| // rdx, rdi: garbage temp, blown away |
| |
| Register rbx_method = rbx; |
| Register rcx_recv = rcx; |
| Register rax_mtype = rax; |
| Register rdx_temp = rdx; |
| Register rdi_temp = rdi; |
| |
| // emit WrongMethodType path first, to enable jccb back-branch from main path |
| Label wrong_method_type; |
| __ bind(wrong_method_type); |
| Label invoke_generic_slow_path; |
| assert(methodOopDesc::intrinsic_id_size_in_bytes() == sizeof(u1), "");; |
| __ cmpb(Address(rbx_method, methodOopDesc::intrinsic_id_offset_in_bytes()), (int) vmIntrinsics::_invokeExact); |
| __ jcc(Assembler::notEqual, invoke_generic_slow_path); |
| __ push(rax_mtype); // required mtype |
| __ push(rcx_recv); // bad mh (1st stacked argument) |
| __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry())); |
| |
| // here's where control starts out: |
| __ align(CodeEntryAlignment); |
| address entry_point = __ pc(); |
| |
| // fetch the MethodType from the method handle into rax (the 'check' register) |
| { |
| Register tem = rbx_method; |
| for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) { |
| __ movptr(rax_mtype, Address(tem, *pchase)); |
| tem = rax_mtype; // in case there is another indirection |
| } |
| } |
| |
| // given the MethodType, find out where the MH argument is buried |
| __ load_heap_oop(rdx_temp, Address(rax_mtype, __ delayed_value(java_dyn_MethodType::form_offset_in_bytes, rdi_temp))); |
| Register rdx_vmslots = rdx_temp; |
| __ movl(rdx_vmslots, Address(rdx_temp, __ delayed_value(java_dyn_MethodTypeForm::vmslots_offset_in_bytes, rdi_temp))); |
| __ movptr(rcx_recv, __ argument_address(rdx_vmslots)); |
| |
| trace_method_handle(_masm, "invokeExact"); |
| |
| __ check_method_handle_type(rax_mtype, rcx_recv, rdi_temp, wrong_method_type); |
| __ jump_to_method_handle_entry(rcx_recv, rdi_temp); |
| |
| // for invokeGeneric (only), apply argument and result conversions on the fly |
| __ bind(invoke_generic_slow_path); |
| #ifdef ASSERT |
| { Label L; |
| __ cmpb(Address(rbx_method, methodOopDesc::intrinsic_id_offset_in_bytes()), (int) vmIntrinsics::_invokeGeneric); |
| __ jcc(Assembler::equal, L); |
| __ stop("bad methodOop::intrinsic_id"); |
| __ bind(L); |
| } |
| #endif //ASSERT |
| Register rbx_temp = rbx_method; // don't need it now |
| |
| // make room on the stack for another pointer: |
| Register rcx_argslot = rcx_recv; |
| __ lea(rcx_argslot, __ argument_address(rdx_vmslots, 1)); |
| insert_arg_slots(_masm, 2 * stack_move_unit(), _INSERT_REF_MASK, |
| rcx_argslot, rbx_temp, rdx_temp); |
| |
| // load up an adapter from the calling type (Java weaves this) |
| __ load_heap_oop(rdx_temp, Address(rax_mtype, __ delayed_value(java_dyn_MethodType::form_offset_in_bytes, rdi_temp))); |
| Register rdx_adapter = rdx_temp; |
| // __ load_heap_oop(rdx_adapter, Address(rdx_temp, java_dyn_MethodTypeForm::genericInvoker_offset_in_bytes())); |
| // deal with old JDK versions: |
| __ lea(rdi_temp, Address(rdx_temp, __ delayed_value(java_dyn_MethodTypeForm::genericInvoker_offset_in_bytes, rdi_temp))); |
| __ cmpptr(rdi_temp, rdx_temp); |
| Label sorry_no_invoke_generic; |
| __ jcc(Assembler::below, sorry_no_invoke_generic); |
| |
| __ load_heap_oop(rdx_adapter, Address(rdi_temp, 0)); |
| __ testptr(rdx_adapter, rdx_adapter); |
| __ jcc(Assembler::zero, sorry_no_invoke_generic); |
| __ movptr(Address(rcx_argslot, 1 * Interpreter::stackElementSize), rdx_adapter); |
| // As a trusted first argument, pass the type being called, so the adapter knows |
| // the actual types of the arguments and return values. |
| // (Generic invokers are shared among form-families of method-type.) |
| __ movptr(Address(rcx_argslot, 0 * Interpreter::stackElementSize), rax_mtype); |
| // FIXME: assert that rdx_adapter is of the right method-type. |
| __ mov(rcx, rdx_adapter); |
| trace_method_handle(_masm, "invokeGeneric"); |
| __ jump_to_method_handle_entry(rcx, rdi_temp); |
| |
| __ bind(sorry_no_invoke_generic); // no invokeGeneric implementation available! |
| __ movptr(rcx_recv, Address(rcx_argslot, -1 * Interpreter::stackElementSize)); // recover original MH |
| __ push(rax_mtype); // required mtype |
| __ push(rcx_recv); // bad mh (1st stacked argument) |
| __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry())); |
| |
| return entry_point; |
| } |
| |
| // Helper to insert argument slots into the stack. |
| // arg_slots must be a multiple of stack_move_unit() and <= 0 |
| void MethodHandles::insert_arg_slots(MacroAssembler* _masm, |
| RegisterOrConstant arg_slots, |
| int arg_mask, |
| Register rax_argslot, |
| Register rbx_temp, Register rdx_temp, Register temp3_reg) { |
| assert(temp3_reg == noreg, "temp3 not required"); |
| assert_different_registers(rax_argslot, rbx_temp, rdx_temp, |
| (!arg_slots.is_register() ? rsp : arg_slots.as_register())); |
| |
| #ifdef ASSERT |
| verify_argslot(_masm, rax_argslot, "insertion point must fall within current frame"); |
| if (arg_slots.is_register()) { |
| Label L_ok, L_bad; |
| __ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD); |
| __ jccb(Assembler::greater, L_bad); |
| __ testl(arg_slots.as_register(), -stack_move_unit() - 1); |
| __ jccb(Assembler::zero, L_ok); |
| __ bind(L_bad); |
| __ stop("assert arg_slots <= 0 and clear low bits"); |
| __ bind(L_ok); |
| } else { |
| assert(arg_slots.as_constant() <= 0, ""); |
| assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); |
| } |
| #endif //ASSERT |
| |
| #ifdef _LP64 |
| if (arg_slots.is_register()) { |
| // clean high bits of stack motion register (was loaded as an int) |
| __ movslq(arg_slots.as_register(), arg_slots.as_register()); |
| } |
| #endif |
| |
| // Make space on the stack for the inserted argument(s). |
| // Then pull down everything shallower than rax_argslot. |
| // The stacked return address gets pulled down with everything else. |
| // That is, copy [rsp, argslot) downward by -size words. In pseudo-code: |
| // rsp -= size; |
| // for (rdx = rsp + size; rdx < argslot; rdx++) |
| // rdx[-size] = rdx[0] |
| // argslot -= size; |
| BLOCK_COMMENT("insert_arg_slots {"); |
| __ mov(rdx_temp, rsp); // source pointer for copy |
| __ lea(rsp, Address(rsp, arg_slots, Address::times_ptr)); |
| { |
| Label loop; |
| __ BIND(loop); |
| // pull one word down each time through the loop |
| __ movptr(rbx_temp, Address(rdx_temp, 0)); |
| __ movptr(Address(rdx_temp, arg_slots, Address::times_ptr), rbx_temp); |
| __ addptr(rdx_temp, wordSize); |
| __ cmpptr(rdx_temp, rax_argslot); |
| __ jccb(Assembler::less, loop); |
| } |
| |
| // Now move the argslot down, to point to the opened-up space. |
| __ lea(rax_argslot, Address(rax_argslot, arg_slots, Address::times_ptr)); |
| BLOCK_COMMENT("} insert_arg_slots"); |
| } |
| |
| // Helper to remove argument slots from the stack. |
| // arg_slots must be a multiple of stack_move_unit() and >= 0 |
| void MethodHandles::remove_arg_slots(MacroAssembler* _masm, |
| RegisterOrConstant arg_slots, |
| Register rax_argslot, |
| Register rbx_temp, Register rdx_temp, Register temp3_reg) { |
| assert(temp3_reg == noreg, "temp3 not required"); |
| assert_different_registers(rax_argslot, rbx_temp, rdx_temp, |
| (!arg_slots.is_register() ? rsp : arg_slots.as_register())); |
| |
| #ifdef ASSERT |
| // Verify that [argslot..argslot+size) lies within (rsp, rbp). |
| __ lea(rbx_temp, Address(rax_argslot, arg_slots, Address::times_ptr)); |
| verify_argslot(_masm, rbx_temp, "deleted argument(s) must fall within current frame"); |
| if (arg_slots.is_register()) { |
| Label L_ok, L_bad; |
| __ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD); |
| __ jccb(Assembler::less, L_bad); |
| __ testl(arg_slots.as_register(), -stack_move_unit() - 1); |
| __ jccb(Assembler::zero, L_ok); |
| __ bind(L_bad); |
| __ stop("assert arg_slots >= 0 and clear low bits"); |
| __ bind(L_ok); |
| } else { |
| assert(arg_slots.as_constant() >= 0, ""); |
| assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); |
| } |
| #endif //ASSERT |
| |
| #ifdef _LP64 |
| if (false) { // not needed, since register is positive |
| // clean high bits of stack motion register (was loaded as an int) |
| if (arg_slots.is_register()) |
| __ movslq(arg_slots.as_register(), arg_slots.as_register()); |
| } |
| #endif |
| |
| BLOCK_COMMENT("remove_arg_slots {"); |
| // Pull up everything shallower than rax_argslot. |
| // Then remove the excess space on the stack. |
| // The stacked return address gets pulled up with everything else. |
| // That is, copy [rsp, argslot) upward by size words. In pseudo-code: |
| // for (rdx = argslot-1; rdx >= rsp; --rdx) |
| // rdx[size] = rdx[0] |
| // argslot += size; |
| // rsp += size; |
| __ lea(rdx_temp, Address(rax_argslot, -wordSize)); // source pointer for copy |
| { |
| Label loop; |
| __ BIND(loop); |
| // pull one word up each time through the loop |
| __ movptr(rbx_temp, Address(rdx_temp, 0)); |
| __ movptr(Address(rdx_temp, arg_slots, Address::times_ptr), rbx_temp); |
| __ addptr(rdx_temp, -wordSize); |
| __ cmpptr(rdx_temp, rsp); |
| __ jccb(Assembler::greaterEqual, loop); |
| } |
| |
| // Now move the argslot up, to point to the just-copied block. |
| __ lea(rsp, Address(rsp, arg_slots, Address::times_ptr)); |
| // And adjust the argslot address to point at the deletion point. |
| __ lea(rax_argslot, Address(rax_argslot, arg_slots, Address::times_ptr)); |
| BLOCK_COMMENT("} remove_arg_slots"); |
| } |
| |
| #ifndef PRODUCT |
| extern "C" void print_method_handle(oop mh); |
| void trace_method_handle_stub(const char* adaptername, |
| oop mh, |
| intptr_t* saved_regs, |
| intptr_t* entry_sp, |
| intptr_t* saved_sp, |
| intptr_t* saved_bp) { |
| // called as a leaf from native code: do not block the JVM! |
| intptr_t* last_sp = (intptr_t*) saved_bp[frame::interpreter_frame_last_sp_offset]; |
| intptr_t* base_sp = (intptr_t*) saved_bp[frame::interpreter_frame_monitor_block_top_offset]; |
| printf("MH %s mh="INTPTR_FORMAT" sp=("INTPTR_FORMAT"+"INTX_FORMAT") stack_size="INTX_FORMAT" bp="INTPTR_FORMAT"\n", |
| adaptername, (intptr_t)mh, (intptr_t)entry_sp, (intptr_t)(saved_sp - entry_sp), (intptr_t)(base_sp - last_sp), (intptr_t)saved_bp); |
| if (last_sp != saved_sp && last_sp != NULL) |
| printf("*** last_sp="INTPTR_FORMAT"\n", (intptr_t)last_sp); |
| if (Verbose) { |
| printf(" reg dump: "); |
| int saved_regs_count = (entry_sp-1) - saved_regs; |
| // 32 bit: rdi rsi rbp rsp; rbx rdx rcx (*) rax |
| int i; |
| for (i = 0; i <= saved_regs_count; i++) { |
| if (i > 0 && i % 4 == 0 && i != saved_regs_count) |
| printf("\n + dump: "); |
| printf(" %d: "INTPTR_FORMAT, i, saved_regs[i]); |
| } |
| printf("\n"); |
| int stack_dump_count = 16; |
| if (stack_dump_count < (int)(saved_bp + 2 - saved_sp)) |
| stack_dump_count = (int)(saved_bp + 2 - saved_sp); |
| if (stack_dump_count > 64) stack_dump_count = 48; |
| for (i = 0; i < stack_dump_count; i += 4) { |
| printf(" dump at SP[%d] "INTPTR_FORMAT": "INTPTR_FORMAT" "INTPTR_FORMAT" "INTPTR_FORMAT" "INTPTR_FORMAT"\n", |
| i, (intptr_t) &entry_sp[i+0], entry_sp[i+0], entry_sp[i+1], entry_sp[i+2], entry_sp[i+3]); |
| } |
| print_method_handle(mh); |
| } |
| } |
| void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) { |
| if (!TraceMethodHandles) return; |
| BLOCK_COMMENT("trace_method_handle {"); |
| __ push(rax); |
| __ lea(rax, Address(rsp, wordSize*6)); // entry_sp |
| __ pusha(); |
| // arguments: |
| __ push(rbp); // interpreter frame pointer |
| __ push(rsi); // saved_sp |
| __ push(rax); // entry_sp |
| __ push(rcx); // mh |
| __ push(rcx); |
| __ movptr(Address(rsp, 0), (intptr_t) adaptername); |
| __ call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub), 5); |
| __ popa(); |
| __ pop(rax); |
| BLOCK_COMMENT("} trace_method_handle"); |
| } |
| #endif //PRODUCT |
| |
| // which conversion op types are implemented here? |
| int MethodHandles::adapter_conversion_ops_supported_mask() { |
| return ((1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_ONLY) |
| |(1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_RAW) |
| |(1<<sun_dyn_AdapterMethodHandle::OP_CHECK_CAST) |
| |(1<<sun_dyn_AdapterMethodHandle::OP_PRIM_TO_PRIM) |
| |(1<<sun_dyn_AdapterMethodHandle::OP_REF_TO_PRIM) |
| |(1<<sun_dyn_AdapterMethodHandle::OP_SWAP_ARGS) |
| |(1<<sun_dyn_AdapterMethodHandle::OP_ROT_ARGS) |
| |(1<<sun_dyn_AdapterMethodHandle::OP_DUP_ARGS) |
| |(1<<sun_dyn_AdapterMethodHandle::OP_DROP_ARGS) |
| //|(1<<sun_dyn_AdapterMethodHandle::OP_SPREAD_ARGS) //BUG! |
| ); |
| // FIXME: MethodHandlesTest gets a crash if we enable OP_SPREAD_ARGS. |
| } |
| |
| //------------------------------------------------------------------------------ |
| // MethodHandles::generate_method_handle_stub |
| // |
| // Generate an "entry" field for a method handle. |
| // This determines how the method handle will respond to calls. |
| void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) { |
| // Here is the register state during an interpreted call, |
| // as set up by generate_method_handle_interpreter_entry(): |
| // - rbx: garbage temp (was MethodHandle.invoke methodOop, unused) |
| // - rcx: receiver method handle |
| // - rax: method handle type (only used by the check_mtype entry point) |
| // - rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted) |
| // - rdx: garbage temp, can blow away |
| |
| const Register rcx_recv = rcx; |
| const Register rax_argslot = rax; |
| const Register rbx_temp = rbx; |
| const Register rdx_temp = rdx; |
| |
| // This guy is set up by prepare_to_jump_from_interpreted (from interpreted calls) |
| // and gen_c2i_adapter (from compiled calls): |
| const Register saved_last_sp = LP64_ONLY(r13) NOT_LP64(rsi); |
| |
| // Argument registers for _raise_exception. |
| // 32-bit: Pass first two oop/int args in registers ECX and EDX. |
| const Register rarg0_code = LP64_ONLY(j_rarg0) NOT_LP64(rcx); |
| const Register rarg1_actual = LP64_ONLY(j_rarg1) NOT_LP64(rdx); |
| const Register rarg2_required = LP64_ONLY(j_rarg2) NOT_LP64(rdi); |
| assert_different_registers(rarg0_code, rarg1_actual, rarg2_required, saved_last_sp); |
| |
| 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(); |
| |
| 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. Since we use a C2I adapter to set up the |
| // interpreter state, arguments are expected in compiler |
| // argument registers. |
| assert(raise_exception_method(), "must be set"); |
| address c2i_entry = raise_exception_method()->get_c2i_entry(); |
| assert(c2i_entry, "method must be linked"); |
| |
| const Register rdi_pc = rax; |
| __ pop(rdi_pc); // caller PC |
| __ mov(rsp, saved_last_sp); // cut the stack back to where the caller started |
| |
| Register rbx_method = rbx_temp; |
| Label L_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, L_no_method); |
| |
| const 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, L_no_method); |
| __ verify_oop(rbx_method); |
| |
| // 32-bit: push remaining arguments as if coming from the compiler. |
| NOT_LP64(__ push(rarg2_required)); |
| |
| __ push(rdi_pc); // restore caller PC |
| __ jump(ExternalAddress(c2i_entry)); // do C2I transition |
| |
| // 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(L_no_method); |
| __ push(rarg2_required); |
| __ push(rarg1_actual); |
| __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry())); |
| } |
| break; |
| |
| case _invokestatic_mh: |
| case _invokespecial_mh: |
| { |
| Register rbx_method = rbx_temp; |
| __ load_heap_oop(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; |
| __ load_heap_oop(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. |
| __ mov(rbx_temp, rcx_recv); // rarg2_required might be RCX |
| assert_different_registers(rarg2_required, rbx_temp); |
| __ movptr(rarg2_required, Address(rdx_intf, java_mirror_offset)); // required interface |
| __ mov( rarg1_actual, rbx_temp); // bad receiver |
| __ movl( rarg0_code, (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: |
| __ load_heap_oop(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; |
| __ load_heap_oop(rbx_method, rcx_mh_vmtarget); |
| __ verify_oop(rbx_method); |
| __ jmp(rbx_method_fie); |
| } else { |
| __ load_heap_oop(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: |
| __ load_heap_oop(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? |
| __ load_heap_oop(rbx_klass, rcx_amh_argument); // this is a Class object! |
| __ load_heap_oop(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes())); |
| |
| Label done; |
| __ movptr(rdx_temp, vmarg); |
| __ testptr(rdx_temp, rdx_temp); |
| __ jcc(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); |
| |
| assert_different_registers(rarg2_required, rdx_temp); |
| __ load_heap_oop(rarg2_required, rcx_amh_argument); // required class |
| __ mov( rarg1_actual, rdx_temp); // bad object |
| __ movl( rarg0_code, (int) Bytecodes::_checkcast); // who is complaining? |
| __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
| |
| __ bind(done); |
| // get the new MH: |
| __ load_heap_oop(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: |
| __ load_heap_oop(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(); |
| } |
| |
| __ load_heap_oop(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); |
| } |
| |
| __ load_heap_oop(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); |
| } |
| } |
| |
| __ load_heap_oop(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 |
| |
| __ load_heap_oop(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 |
| |
| __ load_heap_oop(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; |
| __ load_heap_oop(rbx_klass, rcx_amh_argument); // this is a Class object! |
| __ load_heap_oop(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; |
| __ load_heap_oop(rcx_recv, rcx_mh_vmtarget); |
| __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
| |
| __ bind(bad_array_klass); |
| UNPUSH_RSI_RDI; |
| assert(!vmarg.uses(rarg2_required), "must be different registers"); |
| __ movptr(rarg2_required, Address(rdx_array_klass, java_mirror_offset)); // required type |
| __ movptr(rarg1_actual, vmarg); // bad array |
| __ movl( rarg0_code, (int) Bytecodes::_aaload); // who is complaining? |
| __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
| |
| __ bind(bad_array_length); |
| UNPUSH_RSI_RDI; |
| assert(!vmarg.uses(rarg2_required), "must be different registers"); |
| __ mov (rarg2_required, rcx_recv); // AMH requiring a certain length |
| __ movptr(rarg1_actual, vmarg); // bad array |
| __ movl( rarg0_code, (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)); |
| } |
