| /* |
| * Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #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; |
| } |
| |
| |
| // Code generation |
| address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) { |
| // I5_savedSP/O5_savedSP: sender SP (must preserve) |
| // G4 (Gargs): incoming argument list (must preserve) |
| // G5_method: invoke methodOop |
| // G3_method_handle: receiver method handle (must load from sp[MethodTypeForm.vmslots]) |
| // O0, O1, O2, O3, O4: garbage temps, blown away |
| Register O0_mtype = O0; |
| Register O1_scratch = O1; |
| Register O2_scratch = O2; |
| Register O3_scratch = O3; |
| Register O4_argslot = O4; |
| Register O4_argbase = O4; |
| |
| // emit WrongMethodType path first, to enable 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), "");; |
| __ ldub(Address(G5_method, methodOopDesc::intrinsic_id_offset_in_bytes()), O1_scratch); |
| __ cmp(O1_scratch, (int) vmIntrinsics::_invokeExact); |
| __ brx(Assembler::notEqual, false, Assembler::pt, invoke_generic_slow_path); |
| __ delayed()->nop(); |
| __ mov(O0_mtype, G5_method_type); // required by throw_WrongMethodType |
| // mov(G3_method_handle, G3_method_handle); // already in this register |
| __ jump_to(AddressLiteral(Interpreter::throw_WrongMethodType_entry()), O1_scratch); |
| __ delayed()->nop(); |
| |
| // here's where control starts out: |
| __ align(CodeEntryAlignment); |
| address entry_point = __ pc(); |
| |
| // fetch the MethodType from the method handle |
| { |
| Register tem = G5_method; |
| for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) { |
| __ ld_ptr(Address(tem, *pchase), O0_mtype); |
| tem = O0_mtype; // in case there is another indirection |
| } |
| } |
| |
| // given the MethodType, find out where the MH argument is buried |
| __ load_heap_oop(Address(O0_mtype, __ delayed_value(java_dyn_MethodType::form_offset_in_bytes, O1_scratch)), O4_argslot); |
| __ ldsw( Address(O4_argslot, __ delayed_value(java_dyn_MethodTypeForm::vmslots_offset_in_bytes, O1_scratch)), O4_argslot); |
| __ add(Gargs, __ argument_offset(O4_argslot, 1), O4_argbase); |
| // Note: argument_address uses its input as a scratch register! |
| __ ld_ptr(Address(O4_argbase, -Interpreter::stackElementSize), G3_method_handle); |
| |
| trace_method_handle(_masm, "invokeExact"); |
| |
| __ check_method_handle_type(O0_mtype, G3_method_handle, O1_scratch, wrong_method_type); |
| __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
| |
| // for invokeGeneric (only), apply argument and result conversions on the fly |
| __ bind(invoke_generic_slow_path); |
| #ifdef ASSERT |
| { Label L; |
| __ ldub(Address(G5_method, methodOopDesc::intrinsic_id_offset_in_bytes()), O1_scratch); |
| __ cmp(O1_scratch, (int) vmIntrinsics::_invokeGeneric); |
| __ brx(Assembler::equal, false, Assembler::pt, L); |
| __ delayed()->nop(); |
| __ stop("bad methodOop::intrinsic_id"); |
| __ bind(L); |
| } |
| #endif //ASSERT |
| |
| // make room on the stack for another pointer: |
| insert_arg_slots(_masm, 2 * stack_move_unit(), _INSERT_REF_MASK, O4_argbase, O1_scratch, O2_scratch, O3_scratch); |
| // load up an adapter from the calling type (Java weaves this) |
| Register O2_form = O2_scratch; |
| Register O3_adapter = O3_scratch; |
| __ load_heap_oop(Address(O0_mtype, __ delayed_value(java_dyn_MethodType::form_offset_in_bytes, O1_scratch)), O2_form); |
| // load_heap_oop(Address(O2_form, __ delayed_value(java_dyn_MethodTypeForm::genericInvoker_offset_in_bytes, O1_scratch)), O3_adapter); |
| // deal with old JDK versions: |
| __ add( Address(O2_form, __ delayed_value(java_dyn_MethodTypeForm::genericInvoker_offset_in_bytes, O1_scratch)), O3_adapter); |
| __ cmp(O3_adapter, O2_form); |
| Label sorry_no_invoke_generic; |
| __ brx(Assembler::lessUnsigned, false, Assembler::pn, sorry_no_invoke_generic); |
| __ delayed()->nop(); |
| |
| __ load_heap_oop(Address(O3_adapter, 0), O3_adapter); |
| __ tst(O3_adapter); |
| __ brx(Assembler::zero, false, Assembler::pn, sorry_no_invoke_generic); |
| __ delayed()->nop(); |
| __ st_ptr(O3_adapter, Address(O4_argbase, 1 * Interpreter::stackElementSize)); |
| // 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.) |
| __ st_ptr(O0_mtype, Address(O4_argbase, 0 * Interpreter::stackElementSize)); |
| // FIXME: assert that O3_adapter is of the right method-type. |
| __ mov(O3_adapter, G3_method_handle); |
| trace_method_handle(_masm, "invokeGeneric"); |
| __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
| |
| __ bind(sorry_no_invoke_generic); // no invokeGeneric implementation available! |
| __ mov(O0_mtype, G5_method_type); // required by throw_WrongMethodType |
| // mov(G3_method_handle, G3_method_handle); // already in this register |
| __ jump_to(AddressLiteral(Interpreter::throw_WrongMethodType_entry()), O1_scratch); |
| __ delayed()->nop(); |
| |
| return entry_point; |
| } |
| |
| |
| #ifdef ASSERT |
| static void verify_argslot(MacroAssembler* _masm, Register argslot_reg, Register temp_reg, const char* error_message) { |
| // Verify that argslot lies within (Gargs, FP]. |
| Label L_ok, L_bad; |
| BLOCK_COMMENT("{ verify_argslot"); |
| #ifdef _LP64 |
| __ add(FP, STACK_BIAS, temp_reg); |
| __ cmp(argslot_reg, temp_reg); |
| #else |
| __ cmp(argslot_reg, FP); |
| #endif |
| __ brx(Assembler::greaterUnsigned, false, Assembler::pn, L_bad); |
| __ delayed()->nop(); |
| __ cmp(Gargs, argslot_reg); |
| __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok); |
| __ delayed()->nop(); |
| __ bind(L_bad); |
| __ stop(error_message); |
| __ bind(L_ok); |
| BLOCK_COMMENT("} verify_argslot"); |
| } |
| #endif |
| |
| |
| // 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 argslot_reg, |
| Register temp_reg, Register temp2_reg, Register temp3_reg) { |
| assert(temp3_reg != noreg, "temp3 required"); |
| assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg, |
| (!arg_slots.is_register() ? Gargs : arg_slots.as_register())); |
| |
| #ifdef ASSERT |
| verify_argslot(_masm, argslot_reg, temp_reg, "insertion point must fall within current frame"); |
| if (arg_slots.is_register()) { |
| Label L_ok, L_bad; |
| __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD); |
| __ br(Assembler::greater, false, Assembler::pn, L_bad); |
| __ delayed()->nop(); |
| __ btst(-stack_move_unit() - 1, arg_slots.as_register()); |
| __ br(Assembler::zero, false, Assembler::pt, L_ok); |
| __ delayed()->nop(); |
| __ 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()) { |
| // Was arg_slots register loaded as signed int? |
| Label L_ok; |
| __ sll(arg_slots.as_register(), BitsPerInt, temp_reg); |
| __ sra(temp_reg, BitsPerInt, temp_reg); |
| __ cmp(arg_slots.as_register(), temp_reg); |
| __ br(Assembler::equal, false, Assembler::pt, L_ok); |
| __ delayed()->nop(); |
| __ stop("arg_slots register not loaded as signed int"); |
| __ bind(L_ok); |
| } |
| #endif |
| |
| // Make space on the stack for the inserted argument(s). |
| // Then pull down everything shallower than argslot_reg. |
| // The stacked return address gets pulled down with everything else. |
| // That is, copy [sp, argslot) downward by -size words. In pseudo-code: |
| // sp -= size; |
| // for (temp = sp + size; temp < argslot; temp++) |
| // temp[-size] = temp[0] |
| // argslot -= size; |
| BLOCK_COMMENT("insert_arg_slots {"); |
| RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg); |
| |
| // Keep the stack pointer 2*wordSize aligned. |
| const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1); |
| RegisterOrConstant masked_offset = __ regcon_andn_ptr(offset, TwoWordAlignmentMask, temp_reg); |
| __ add(SP, masked_offset, SP); |
| |
| __ mov(Gargs, temp_reg); // source pointer for copy |
| __ add(Gargs, offset, Gargs); |
| |
| { |
| Label loop; |
| __ BIND(loop); |
| // pull one word down each time through the loop |
| __ ld_ptr(Address(temp_reg, 0), temp2_reg); |
| __ st_ptr(temp2_reg, Address(temp_reg, offset)); |
| __ add(temp_reg, wordSize, temp_reg); |
| __ cmp(temp_reg, argslot_reg); |
| __ brx(Assembler::less, false, Assembler::pt, loop); |
| __ delayed()->nop(); // FILLME |
| } |
| |
| // Now move the argslot down, to point to the opened-up space. |
| __ add(argslot_reg, offset, argslot_reg); |
| 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 argslot_reg, |
| Register temp_reg, Register temp2_reg, Register temp3_reg) { |
| assert(temp3_reg != noreg, "temp3 required"); |
| assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg, |
| (!arg_slots.is_register() ? Gargs : arg_slots.as_register())); |
| |
| RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg); |
| |
| #ifdef ASSERT |
| // Verify that [argslot..argslot+size) lies within (Gargs, FP). |
| __ add(argslot_reg, offset, temp2_reg); |
| verify_argslot(_masm, temp2_reg, temp_reg, "deleted argument(s) must fall within current frame"); |
| if (arg_slots.is_register()) { |
| Label L_ok, L_bad; |
| __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD); |
| __ br(Assembler::less, false, Assembler::pn, L_bad); |
| __ delayed()->nop(); |
| __ btst(-stack_move_unit() - 1, arg_slots.as_register()); |
| __ br(Assembler::zero, false, Assembler::pt, L_ok); |
| __ delayed()->nop(); |
| __ 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 |
| |
| BLOCK_COMMENT("remove_arg_slots {"); |
| // Pull up everything shallower than argslot. |
| // Then remove the excess space on the stack. |
| // The stacked return address gets pulled up with everything else. |
| // That is, copy [sp, argslot) upward by size words. In pseudo-code: |
| // for (temp = argslot-1; temp >= sp; --temp) |
| // temp[size] = temp[0] |
| // argslot += size; |
| // sp += size; |
| __ sub(argslot_reg, wordSize, temp_reg); // source pointer for copy |
| { |
| Label loop; |
| __ BIND(loop); |
| // pull one word up each time through the loop |
| __ ld_ptr(Address(temp_reg, 0), temp2_reg); |
| __ st_ptr(temp2_reg, Address(temp_reg, offset)); |
| __ sub(temp_reg, wordSize, temp_reg); |
| __ cmp(temp_reg, Gargs); |
| __ brx(Assembler::greaterEqual, false, Assembler::pt, loop); |
| __ delayed()->nop(); // FILLME |
| } |
| |
| // Now move the argslot up, to point to the just-copied block. |
| __ add(Gargs, offset, Gargs); |
| // And adjust the argslot address to point at the deletion point. |
| __ add(argslot_reg, offset, argslot_reg); |
| |
| // Keep the stack pointer 2*wordSize aligned. |
| const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1); |
| RegisterOrConstant masked_offset = __ regcon_andn_ptr(offset, TwoWordAlignmentMask, temp_reg); |
| __ add(SP, masked_offset, SP); |
| BLOCK_COMMENT("} remove_arg_slots"); |
| } |
| |
| |
| #ifndef PRODUCT |
| extern "C" void print_method_handle(oop mh); |
| void trace_method_handle_stub(const char* adaptername, |
| oopDesc* mh) { |
| printf("MH %s mh="INTPTR_FORMAT"\n", adaptername, (intptr_t) mh); |
| print_method_handle(mh); |
| } |
| void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) { |
| if (!TraceMethodHandles) return; |
| BLOCK_COMMENT("trace_method_handle {"); |
| // save: Gargs, O5_savedSP |
| __ save_frame(16); |
| __ set((intptr_t) adaptername, O0); |
| __ mov(G3_method_handle, O1); |
| __ mov(G3_method_handle, L3); |
| __ mov(Gargs, L4); |
| __ mov(G5_method_type, L5); |
| __ call_VM_leaf(L7, CAST_FROM_FN_PTR(address, trace_method_handle_stub)); |
| |
| __ mov(L3, G3_method_handle); |
| __ mov(L4, Gargs); |
| __ mov(L5, G5_method_type); |
| __ restore(); |
| 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(): |
| // - G5: garbage temp (was MethodHandle.invoke methodOop, unused) |
| // - G3: receiver method handle |
| // - O5_savedSP: sender SP (must preserve) |
| |
| const Register O0_argslot = O0; |
| const Register O1_scratch = O1; |
| const Register O2_scratch = O2; |
| const Register O3_scratch = O3; |
| const Register G5_index = G5; |
| |
| // Argument registers for _raise_exception. |
| const Register O0_code = O0; |
| const Register O1_actual = O1; |
| const Register O2_required = O2; |
| |
| guarantee(java_dyn_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets"); |
| |
| // Some handy addresses: |
| Address G5_method_fie( G5_method, in_bytes(methodOopDesc::from_interpreted_offset())); |
| |
| Address G3_mh_vmtarget( G3_method_handle, java_dyn_MethodHandle::vmtarget_offset_in_bytes()); |
| |
| Address G3_dmh_vmindex( G3_method_handle, sun_dyn_DirectMethodHandle::vmindex_offset_in_bytes()); |
| |
| Address G3_bmh_vmargslot( G3_method_handle, sun_dyn_BoundMethodHandle::vmargslot_offset_in_bytes()); |
| Address G3_bmh_argument( G3_method_handle, sun_dyn_BoundMethodHandle::argument_offset_in_bytes()); |
| |
| Address G3_amh_vmargslot( G3_method_handle, sun_dyn_AdapterMethodHandle::vmargslot_offset_in_bytes()); |
| Address G3_amh_argument ( G3_method_handle, sun_dyn_AdapterMethodHandle::argument_offset_in_bytes()); |
| Address G3_amh_conversion(G3_method_handle, sun_dyn_AdapterMethodHandle::conversion_offset_in_bytes()); |
| |
| 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)); |
| |
| 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"); |
| |
| __ mov(O5_savedSP, SP); // Cut the stack back to where the caller started. |
| |
| Label L_no_method; |
| // FIXME: fill in _raise_exception_method with a suitable sun.dyn method |
| __ set(AddressLiteral((address) &_raise_exception_method), G5_method); |
| __ ld_ptr(Address(G5_method, 0), G5_method); |
| __ tst(G5_method); |
| __ brx(Assembler::zero, false, Assembler::pn, L_no_method); |
| __ delayed()->nop(); |
| |
| const int jobject_oop_offset = 0; |
| __ ld_ptr(Address(G5_method, jobject_oop_offset), G5_method); |
| __ tst(G5_method); |
| __ brx(Assembler::zero, false, Assembler::pn, L_no_method); |
| __ delayed()->nop(); |
| |
| __ verify_oop(G5_method); |
| __ jump_to(AddressLiteral(c2i_entry), O3_scratch); |
| __ delayed()->nop(); |
| |
| // 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); |
| __ unimplemented("call throw_WrongMethodType_entry"); |
| } |
| break; |
| |
| case _invokestatic_mh: |
| case _invokespecial_mh: |
| { |
| __ load_heap_oop(G3_mh_vmtarget, G5_method); // target is a methodOop |
| __ verify_oop(G5_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(O0_argslot, G3_method_handle, O1_scratch); |
| __ ld_ptr(__ argument_address(O0_argslot), G3_method_handle); |
| __ null_check(G3_method_handle); |
| __ verify_oop(G3_method_handle); |
| } |
| __ jump_indirect_to(G5_method_fie, O1_scratch); |
| __ delayed()->nop(); |
| } |
| 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(O0_argslot, G3_method_handle, O1_scratch); |
| __ ldsw(G3_dmh_vmindex, G5_index); |
| // Note: The verifier allows us to ignore G3_mh_vmtarget. |
| __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle); |
| __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes()); |
| |
| // Get receiver klass: |
| Register O0_klass = O0_argslot; |
| __ load_klass(G3_method_handle, O0_klass); |
| __ verify_oop(O0_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"); |
| |
| __ sll_ptr(G5_index, LogBytesPerWord, G5_index); |
| __ add(O0_klass, G5_index, O0_klass); |
| Address vtable_entry_addr(O0_klass, base + vtableEntry::method_offset_in_bytes()); |
| __ ld_ptr(vtable_entry_addr, G5_method); |
| |
| __ verify_oop(G5_method); |
| __ jump_indirect_to(G5_method_fie, O1_scratch); |
| __ delayed()->nop(); |
| } |
| break; |
| |
| case _invokeinterface_mh: |
| { |
| // Same as TemplateTable::invokeinterface, |
| // minus the CP setup and profiling: |
| __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch); |
| Register O1_intf = O1_scratch; |
| __ load_heap_oop(G3_mh_vmtarget, O1_intf); |
| __ ldsw(G3_dmh_vmindex, G5_index); |
| __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle); |
| __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes()); |
| |
| // Get receiver klass: |
| Register O0_klass = O0_argslot; |
| __ load_klass(G3_method_handle, O0_klass); |
| __ verify_oop(O0_klass); |
| |
| // Get interface: |
| Label no_such_interface; |
| __ verify_oop(O1_intf); |
| __ lookup_interface_method(O0_klass, O1_intf, |
| // Note: next two args must be the same: |
| G5_index, G5_method, |
| O2_scratch, |
| O3_scratch, |
| no_such_interface); |
| |
| __ verify_oop(G5_method); |
| __ jump_indirect_to(G5_method_fie, O1_scratch); |
| __ delayed()->nop(); |
| |
| __ bind(no_such_interface); |
| // Throw an exception. |
| // For historical reasons, it will be IncompatibleClassChangeError. |
| __ unimplemented("not tested yet"); |
| __ ld_ptr(Address(O1_intf, java_mirror_offset), O2_required); // required interface |
| __ mov( O0_klass, O1_actual); // bad receiver |
| __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O3_scratch); |
| __ delayed()->mov(Bytecodes::_invokeinterface, O0_code); // who is complaining? |
| } |
| 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: |
| { |
| const 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: |
| __ ldsw(G3_bmh_vmargslot, O0_argslot); |
| __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); |
| |
| insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask, O0_argslot, O1_scratch, O2_scratch, G5_index); |
| |
| // Store bound argument into the new stack slot: |
| __ load_heap_oop(G3_bmh_argument, O1_scratch); |
| if (arg_type == T_OBJECT) { |
| __ st_ptr(O1_scratch, Address(O0_argslot, 0)); |
| } else { |
| Address prim_value_addr(O1_scratch, java_lang_boxing_object::value_offset_in_bytes(arg_type)); |
| __ load_sized_value(prim_value_addr, O2_scratch, type2aelembytes(arg_type), is_signed_subword_type(arg_type)); |
| if (arg_slots == 2) { |
| __ unimplemented("not yet tested"); |
| #ifndef _LP64 |
| __ signx(O2_scratch, O3_scratch); // Sign extend |
| #endif |
| __ st_long(O2_scratch, Address(O0_argslot, 0)); // Uses O2/O3 on !_LP64 |
| } else { |
| __ st_ptr( O2_scratch, Address(O0_argslot, 0)); |
| } |
| } |
| |
| if (direct_to_method) { |
| __ load_heap_oop(G3_mh_vmtarget, G5_method); // target is a methodOop |
| __ verify_oop(G5_method); |
| __ jump_indirect_to(G5_method_fie, O1_scratch); |
| __ delayed()->nop(); |
| } else { |
| __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); // target is a methodOop |
| __ verify_oop(G3_method_handle); |
| __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
| } |
| } |
| break; |
| |
| case _adapter_retype_only: |
| case _adapter_retype_raw: |
| // Immediately jump to the next MH layer: |
| __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
| __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
| // This is OK when all parameter types widen. |
| // It is also OK when a return type narrows. |
| break; |
| |
| case _adapter_check_cast: |
| { |
| // Temps: |
| Register G5_klass = G5_index; // Interesting AMH data. |
| |
| // Check a reference argument before jumping to the next layer of MH: |
| __ ldsw(G3_amh_vmargslot, O0_argslot); |
| Address vmarg = __ argument_address(O0_argslot); |
| |
| // What class are we casting to? |
| __ load_heap_oop(G3_amh_argument, G5_klass); // This is a Class object! |
| __ load_heap_oop(Address(G5_klass, java_lang_Class::klass_offset_in_bytes()), G5_klass); |
| |
| Label done; |
| __ ld_ptr(vmarg, O1_scratch); |
| __ tst(O1_scratch); |
| __ brx(Assembler::zero, false, Assembler::pn, done); // No cast if null. |
| __ delayed()->nop(); |
| __ load_klass(O1_scratch, O1_scratch); |
| |
| // Live at this point: |
| // - G5_klass : klass required by the target method |
| // - O1_scratch : argument klass to test |
| // - G3_method_handle: adapter method handle |
| __ check_klass_subtype(O1_scratch, G5_klass, O0_argslot, O2_scratch, done); |
| |
| // If we get here, the type check failed! |
| __ load_heap_oop(G3_amh_argument, O2_required); // required class |
| __ ld_ptr( vmarg, O1_actual); // bad object |
| __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O3_scratch); |
| __ delayed()->mov(Bytecodes::_checkcast, O0_code); // who is complaining? |
| |
| __ bind(done); |
| // Get the new MH: |
| __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
| __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
| } |
| 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. |
| __ ldsw(G3_amh_vmargslot, O0_argslot); |
| Address value; |
| Address vmarg = __ argument_address(O0_argslot); |
| bool value_left_justified = false; |
| |
| switch (ek) { |
| case _adapter_opt_i2i: |
| value = vmarg; |
| break; |
| case _adapter_opt_l2i: |
| { |
| // just delete the extra slot |
| #ifdef _LP64 |
| // In V9, longs are given 2 64-bit slots in the interpreter, but the |
| // data is passed in only 1 slot. |
| // Keep the second slot. |
| __ add(Gargs, __ argument_offset(O0_argslot, -1), O0_argslot); |
| remove_arg_slots(_masm, -stack_move_unit(), O0_argslot, O1_scratch, O2_scratch, O3_scratch); |
| value = Address(O0_argslot, 4); // Get least-significant 32-bit of 64-bit value. |
| vmarg = Address(O0_argslot, Interpreter::stackElementSize); |
| #else |
| // Keep the first slot. |
| __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); |
| remove_arg_slots(_masm, -stack_move_unit(), O0_argslot, O1_scratch, O2_scratch, O3_scratch); |
| value = Address(O0_argslot, 0); |
| vmarg = value; |
| #endif |
| } |
| break; |
| case _adapter_opt_unboxi: |
| { |
| // Load the value up from the heap. |
| __ ld_ptr(vmarg, O1_scratch); |
| 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(O1_scratch, value_offset); |
| value = Address(O1_scratch, value_offset); |
| #ifdef _BIG_ENDIAN |
| // Values stored in objects are packed. |
| value_left_justified = true; |
| #endif |
| } |
| break; |
| default: |
| ShouldNotReachHere(); |
| } |
| |
| // This check is required on _BIG_ENDIAN |
| Register G5_vminfo = G5_index; |
| __ ldsw(G3_amh_conversion, G5_vminfo); |
| assert(CONV_VMINFO_SHIFT == 0, "preshifted"); |
| |
| // Original 32-bit vmdata word must be of this form: |
| // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 | |
| __ lduw(value, O1_scratch); |
| if (!value_left_justified) |
| __ sll(O1_scratch, G5_vminfo, O1_scratch); |
| Label zero_extend, done; |
| __ btst(CONV_VMINFO_SIGN_FLAG, G5_vminfo); |
| __ br(Assembler::zero, false, Assembler::pn, zero_extend); |
| __ delayed()->nop(); |
| |
| // this path is taken for int->byte, int->short |
| __ sra(O1_scratch, G5_vminfo, O1_scratch); |
| __ ba(false, done); |
| __ delayed()->nop(); |
| |
| __ bind(zero_extend); |
| // this is taken for int->char |
| __ srl(O1_scratch, G5_vminfo, O1_scratch); |
| |
| __ bind(done); |
| __ st(O1_scratch, vmarg); |
| |
| // Get the new MH: |
| __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
| __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
| } |
| 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. |
| __ ldsw(G3_amh_vmargslot, O0_argslot); |
| |
| // On big-endian machine we duplicate the slot and store the MSW |
| // in the first slot. |
| __ add(Gargs, __ argument_offset(O0_argslot, 1), O0_argslot); |
| |
| insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, O0_argslot, O1_scratch, O2_scratch, G5_index); |
| |
| Address arg_lsw(O0_argslot, 0); |
| Address arg_msw(O0_argslot, -Interpreter::stackElementSize); |
| |
| switch (ek) { |
| case _adapter_opt_i2l: |
| { |
| __ ldsw(arg_lsw, O2_scratch); // Load LSW |
| #ifndef _LP64 |
| __ signx(O2_scratch, O3_scratch); // Sign extend |
| #endif |
| __ st_long(O2_scratch, arg_msw); // Uses O2/O3 on !_LP64 |
| } |
| break; |
| case _adapter_opt_unboxl: |
| { |
| // Load the value up from the heap. |
| __ ld_ptr(arg_lsw, O1_scratch); |
| 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(O1_scratch, value_offset); |
| __ ld_long(Address(O1_scratch, value_offset), O2_scratch); // Uses O2/O3 on !_LP64 |
| __ st_long(O2_scratch, arg_msw); |
| } |
| break; |
| default: |
| ShouldNotReachHere(); |
| } |
| |
| __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
| __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
| } |
| 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 |
| __ unimplemented(entry_name(ek)); |
| } |
| 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. |
| __ ldsw(G3_amh_vmargslot, O0_argslot); |
| __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); |
| |
| // 'vminfo' is the second. |
| Register O1_destslot = O1_scratch; |
| __ ldsw(G3_amh_conversion, O1_destslot); |
| assert(CONV_VMINFO_SHIFT == 0, "preshifted"); |
| __ and3(O1_destslot, CONV_VMINFO_MASK, O1_destslot); |
| __ add(Gargs, __ argument_offset(O1_destslot), O1_destslot); |
| |
| if (!rotate) { |
| for (int i = 0; i < swap_bytes; i += wordSize) { |
| __ ld_ptr(Address(O0_argslot, i), O2_scratch); |
| __ ld_ptr(Address(O1_destslot, i), O3_scratch); |
| __ st_ptr(O3_scratch, Address(O0_argslot, i)); |
| __ st_ptr(O2_scratch, Address(O1_destslot, i)); |
| } |
| } else { |
| // Save the first chunk, which is going to get overwritten. |
| switch (swap_bytes) { |
| case 4 : __ lduw(Address(O0_argslot, 0), O2_scratch); break; |
| case 16: __ ldx( Address(O0_argslot, 8), O3_scratch); //fall-thru |
| case 8 : __ ldx( Address(O0_argslot, 0), O2_scratch); break; |
| default: ShouldNotReachHere(); |
| } |
| |
| if (rotate > 0) { |
| // Rorate upward. |
| __ sub(O0_argslot, swap_bytes, O0_argslot); |
| #if ASSERT |
| { |
| // Verify that argslot > destslot, by at least swap_bytes. |
| Label L_ok; |
| __ cmp(O0_argslot, O1_destslot); |
| __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, L_ok); |
| __ delayed()->nop(); |
| __ stop("source must be above destination (upward rotation)"); |
| __ bind(L_ok); |
| } |
| #endif |
| // Work argslot down to destslot, copying contiguous data upwards. |
| // Pseudo-code: |
| // argslot = src_addr - swap_bytes |
| // destslot = dest_addr |
| // while (argslot >= destslot) { |
| // *(argslot + swap_bytes) = *(argslot + 0); |
| // argslot--; |
| // } |
| Label loop; |
| __ bind(loop); |
| __ ld_ptr(Address(O0_argslot, 0), G5_index); |
| __ st_ptr(G5_index, Address(O0_argslot, swap_bytes)); |
| __ sub(O0_argslot, wordSize, O0_argslot); |
| __ cmp(O0_argslot, O1_destslot); |
| __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, loop); |
| __ delayed()->nop(); // FILLME |
| } else { |
| __ add(O0_argslot, swap_bytes, O0_argslot); |
| #if ASSERT |
| { |
| // Verify that argslot < destslot, by at least swap_bytes. |
| Label L_ok; |
| __ cmp(O0_argslot, O1_destslot); |
| __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok); |
| __ delayed()->nop(); |
| __ stop("source must be above destination (upward rotation)"); |
| __ bind(L_ok); |
| } |
| #endif |
| // Work argslot up to destslot, copying contiguous data downwards. |
| // Pseudo-code: |
| // argslot = src_addr + swap_bytes |
| // destslot = dest_addr |
| // while (argslot >= destslot) { |
| // *(argslot - swap_bytes) = *(argslot + 0); |
| // argslot++; |
| // } |
| Label loop; |
| __ bind(loop); |
| __ ld_ptr(Address(O0_argslot, 0), G5_index); |
| __ st_ptr(G5_index, Address(O0_argslot, -swap_bytes)); |
| __ add(O0_argslot, wordSize, O0_argslot); |
| __ cmp(O0_argslot, O1_destslot); |
| __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, loop); |
| __ delayed()->nop(); // FILLME |
| } |
| |
| // Store the original first chunk into the destination slot, now free. |
| switch (swap_bytes) { |
| case 4 : __ stw(O2_scratch, Address(O1_destslot, 0)); break; |
| case 16: __ stx(O3_scratch, Address(O1_destslot, 8)); // fall-thru |
| case 8 : __ stx(O2_scratch, Address(O1_destslot, 0)); break; |
| default: ShouldNotReachHere(); |
| } |
| } |
| |
| __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
| __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
| } |
| break; |
| |
| case _adapter_dup_args: |
| { |
| // 'argslot' is the position of the first argument to duplicate. |
| __ ldsw(G3_amh_vmargslot, O0_argslot); |
| __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); |
| |
| // 'stack_move' is negative number of words to duplicate. |
| Register G5_stack_move = G5_index; |
| __ ldsw(G3_amh_conversion, G5_stack_move); |
| __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move); |
| |
| // Remember the old Gargs (argslot[0]). |
| Register O1_oldarg = O1_scratch; |
| __ mov(Gargs, O1_oldarg); |
| |
| // Move Gargs down to make room for dups. |
| __ sll_ptr(G5_stack_move, LogBytesPerWord, G5_stack_move); |
| __ add(Gargs, G5_stack_move, Gargs); |
| |
| // Compute the new Gargs (argslot[0]). |
| Register O2_newarg = O2_scratch; |
| __ mov(Gargs, O2_newarg); |
| |
| // Copy from oldarg[0...] down to newarg[0...] |
| // Pseude-code: |
| // O1_oldarg = old-Gargs |
| // O2_newarg = new-Gargs |
| // O0_argslot = argslot |
| // while (O2_newarg < O1_oldarg) *O2_newarg = *O0_argslot++ |
| Label loop; |
| __ bind(loop); |
| __ ld_ptr(Address(O0_argslot, 0), O3_scratch); |
| __ st_ptr(O3_scratch, Address(O2_newarg, 0)); |
| __ add(O0_argslot, wordSize, O0_argslot); |
| __ add(O2_newarg, wordSize, O2_newarg); |
| __ cmp(O2_newarg, O1_oldarg); |
| __ brx(Assembler::less, false, Assembler::pt, loop); |
| __ delayed()->nop(); // FILLME |
| |
| __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
| __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
| } |
| break; |
| |
| case _adapter_drop_args: |
| { |
| // 'argslot' is the position of the first argument to nuke. |
| __ ldsw(G3_amh_vmargslot, O0_argslot); |
| __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); |
| |
| // 'stack_move' is number of words to drop. |
| Register G5_stack_move = G5_index; |
| __ ldsw(G3_amh_conversion, G5_stack_move); |
| __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move); |
| |
| remove_arg_slots(_masm, G5_stack_move, O0_argslot, O1_scratch, O2_scratch, O3_scratch); |
| |
| __ load_heap_oop(G3_mh_vmtarget, G3_method_handle); |
| __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); |
| } |
| 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 |
| __ unimplemented(entry_name(ek)); |
| } |
| break; |
| |
| case _adapter_flyby: |
| case _adapter_ricochet: |
| __ unimplemented(entry_name(ek)); // %%% FIXME: NYI |
| break; |
| |
| default: |
| ShouldNotReachHere(); |
| } |
| |
| 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)); |
| } |
