jrose@1145: /*
drchase@5800:  * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
jrose@1145:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
jrose@1145:  *
jrose@1145:  * This code is free software; you can redistribute it and/or modify it
jrose@1145:  * under the terms of the GNU General Public License version 2 only, as
jrose@1145:  * published by the Free Software Foundation.
jrose@1145:  *
jrose@1145:  * This code is distributed in the hope that it will be useful, but WITHOUT
jrose@1145:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
jrose@1145:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
jrose@1145:  * version 2 for more details (a copy is included in the LICENSE file that
jrose@1145:  * accompanied this code).
jrose@1145:  *
jrose@1145:  * You should have received a copy of the GNU General Public License version
jrose@1145:  * 2 along with this work; if not, write to the Free Software Foundation,
jrose@1145:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
jrose@1145:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
jrose@1145:  *
jrose@1145:  */
jrose@1145: 
stefank@2314: #include "precompiled.hpp"
twisti@4323: #include "asm/macroAssembler.hpp"
stefank@2314: #include "interpreter/interpreter.hpp"
stefank@2314: #include "memory/allocation.inline.hpp"
stefank@2314: #include "prims/methodHandles.hpp"
jrose@1145: 
jrose@1145: #define __ _masm->
jrose@1145: 
twisti@2204: #ifdef PRODUCT
twisti@2204: #define BLOCK_COMMENT(str) /* nothing */
twisti@3969: #define STOP(error) stop(error)
twisti@2204: #else
twisti@2204: #define BLOCK_COMMENT(str) __ block_comment(str)
twisti@3969: #define STOP(error) block_comment(error); __ stop(error)
twisti@2204: #endif
twisti@2204: 
twisti@2204: #define BIND(label) bind(label); BLOCK_COMMENT(#label ":")
twisti@2204: 
twisti@3969: // Workaround for C++ overloading nastiness on '0' for RegisterOrConstant.
twisti@3969: static RegisterOrConstant constant(int value) {
twisti@3969:   return RegisterOrConstant(value);
jrose@1145: }
jrose@1145: 
never@2950: void MethodHandles::load_klass_from_Class(MacroAssembler* _masm, Register klass_reg, Register temp_reg, Register temp2_reg) {
never@2950:   if (VerifyMethodHandles)
coleenp@4037:     verify_klass(_masm, klass_reg, SystemDictionary::WK_KLASS_ENUM_NAME(java_lang_Class), temp_reg, temp2_reg,
twisti@3969:                  "MH argument is a Class");
coleenp@4037:   __ ld_ptr(Address(klass_reg, java_lang_Class::klass_offset_in_bytes()), klass_reg);
never@2950: }
never@2950: 
twisti@3969: #ifdef ASSERT
twisti@3969: static int check_nonzero(const char* xname, int x) {
twisti@3969:   assert(x != 0, err_msg("%s should be nonzero", xname));
twisti@3969:   return x;
never@2950: }
twisti@3969: #define NONZERO(x) check_nonzero(#x, x)
twisti@3969: #else //ASSERT
twisti@3969: #define NONZERO(x) (x)
twisti@3969: #endif //ASSERT
never@2950: 
never@2950: #ifdef ASSERT
never@2950: void MethodHandles::verify_klass(MacroAssembler* _masm,
coleenp@4037:                                  Register obj_reg, SystemDictionary::WKID klass_id,
never@2950:                                  Register temp_reg, Register temp2_reg,
never@2950:                                  const char* error_message) {
coleenp@4037:   Klass** klass_addr = SystemDictionary::well_known_klass_addr(klass_id);
coleenp@4037:   KlassHandle klass = SystemDictionary::well_known_klass(klass_id);
twisti@3969:   bool did_save = false;
twisti@3969:   if (temp_reg == noreg || temp2_reg == noreg) {
twisti@3969:     temp_reg = L1;
twisti@3969:     temp2_reg = L2;
twisti@3969:     __ save_frame_and_mov(0, obj_reg, L0);
twisti@3969:     obj_reg = L0;
twisti@3969:     did_save = true;
twisti@3969:   }
never@2950:   Label L_ok, L_bad;
never@2950:   BLOCK_COMMENT("verify_klass {");
never@2950:   __ verify_oop(obj_reg);
kvn@3037:   __ br_null_short(obj_reg, Assembler::pn, L_bad);
never@2950:   __ load_klass(obj_reg, temp_reg);
coleenp@4037:   __ set(ExternalAddress((Metadata**)klass_addr), temp2_reg);
never@2950:   __ ld_ptr(Address(temp2_reg, 0), temp2_reg);
kvn@3037:   __ cmp_and_brx_short(temp_reg, temp2_reg, Assembler::equal, Assembler::pt, L_ok);
never@2950:   intptr_t super_check_offset = klass->super_check_offset();
never@2950:   __ ld_ptr(Address(temp_reg, super_check_offset), temp_reg);
coleenp@4037:   __ set(ExternalAddress((Metadata**)klass_addr), temp2_reg);
never@2950:   __ ld_ptr(Address(temp2_reg, 0), temp2_reg);
kvn@3037:   __ cmp_and_brx_short(temp_reg, temp2_reg, Assembler::equal, Assembler::pt, L_ok);
never@2950:   __ BIND(L_bad);
twisti@3969:   if (did_save)  __ restore();
twisti@3969:   __ STOP(error_message);
never@2950:   __ BIND(L_ok);
twisti@3969:   if (did_save)  __ restore();
never@2950:   BLOCK_COMMENT("} verify_klass");
never@2950: }
twisti@3969: 
twisti@3969: void MethodHandles::verify_ref_kind(MacroAssembler* _masm, int ref_kind, Register member_reg, Register temp) {
twisti@3969:   Label L;
twisti@3969:   BLOCK_COMMENT("verify_ref_kind {");
twisti@3969:   __ lduw(Address(member_reg, NONZERO(java_lang_invoke_MemberName::flags_offset_in_bytes())), temp);
twisti@3969:   __ srl( temp, java_lang_invoke_MemberName::MN_REFERENCE_KIND_SHIFT, temp);
twisti@3969:   __ and3(temp, java_lang_invoke_MemberName::MN_REFERENCE_KIND_MASK,  temp);
twisti@3969:   __ cmp_and_br_short(temp, ref_kind, Assembler::equal, Assembler::pt, L);
twisti@3969:   { char* buf = NEW_C_HEAP_ARRAY(char, 100, mtInternal);
twisti@3969:     jio_snprintf(buf, 100, "verify_ref_kind expected %x", ref_kind);
twisti@3969:     if (ref_kind == JVM_REF_invokeVirtual ||
twisti@3969:         ref_kind == JVM_REF_invokeSpecial)
twisti@3969:       // could do this for all ref_kinds, but would explode assembly code size
twisti@3969:       trace_method_handle(_masm, buf);
twisti@3969:     __ STOP(buf);
twisti@3969:   }
twisti@3969:   BLOCK_COMMENT("} verify_ref_kind");
twisti@3969:   __ bind(L);
twisti@3969: }
twisti@3969: 
never@2950: #endif // ASSERT
jrose@1145: 
twisti@3969: void MethodHandles::jump_from_method_handle(MacroAssembler* _masm, Register method, Register target, Register temp,
twisti@3969:                                             bool for_compiler_entry) {
drchase@5800:   Label L_no_such_method;
never@3005:   assert(method == G5_method, "interpreter calling convention");
twisti@4101:   assert_different_registers(method, target, temp);
twisti@3969: 
twisti@3969:   if (!for_compiler_entry && JvmtiExport::can_post_interpreter_events()) {
twisti@3969:     Label run_compiled_code;
never@3005:     // JVMTI events, such as single-stepping, are implemented partly by avoiding running
never@3005:     // compiled code in threads for which the event is enabled.  Check here for
never@3005:     // interp_only_mode if these events CAN be enabled.
never@3005:     __ verify_thread();
never@3005:     const Address interp_only(G2_thread, JavaThread::interp_only_mode_offset());
never@3005:     __ ld(interp_only, temp);
twisti@3969:     __ cmp_and_br_short(temp, 0, Assembler::zero, Assembler::pt, run_compiled_code);
drchase@5800:     // Null method test is replicated below in compiled case,
drchase@5800:     // it might be able to address across the verify_thread()
drchase@5800:     __ br_null_short(G5_method, Assembler::pn, L_no_such_method);
coleenp@4037:     __ ld_ptr(G5_method, in_bytes(Method::interpreter_entry_offset()), target);
twisti@3969:     __ jmp(target, 0);
twisti@3969:     __ delayed()->nop();
twisti@3969:     __ BIND(run_compiled_code);
twisti@3969:     // Note: we could fill some delay slots here, but
twisti@3969:     // it doesn't matter, since this is interpreter code.
never@3005:   }
twisti@3969: 
drchase@5800:   // Compiled case, either static or fall-through from runtime conditional
drchase@5800:   __ br_null_short(G5_method, Assembler::pn, L_no_such_method);
drchase@5800: 
coleenp@4037:   const ByteSize entry_offset = for_compiler_entry ? Method::from_compiled_offset() :
coleenp@4037:                                                      Method::from_interpreted_offset();
twisti@3969:   __ ld_ptr(G5_method, in_bytes(entry_offset), target);
never@3005:   __ jmp(target, 0);
never@3005:   __ delayed()->nop();
drchase@5800: 
drchase@5800:   __ bind(L_no_such_method);
drchase@5800:   AddressLiteral ame(StubRoutines::throw_AbstractMethodError_entry());
drchase@5800:   __ jump_to(ame, temp);
drchase@5800:   __ delayed()->nop();
never@3005: }
never@3005: 
twisti@3969: void MethodHandles::jump_to_lambda_form(MacroAssembler* _masm,
twisti@3969:                                         Register recv, Register method_temp,
twisti@3969:                                         Register temp2, Register temp3,
twisti@3969:                                         bool for_compiler_entry) {
twisti@3969:   BLOCK_COMMENT("jump_to_lambda_form {");
twisti@3969:   // This is the initial entry point of a lazy method handle.
twisti@3969:   // After type checking, it picks up the invoker from the LambdaForm.
twisti@4101:   assert_different_registers(recv, method_temp, temp2);  // temp3 is only passed on
twisti@3969:   assert(method_temp == G5_method, "required register for loading method");
twisti@3969: 
twisti@3969:   //NOT_PRODUCT({ FlagSetting fs(TraceMethodHandles, true); trace_method_handle(_masm, "LZMH"); });
twisti@3969: 
twisti@3969:   // Load the invoker, as MH -> MH.form -> LF.vmentry
twisti@3969:   __ verify_oop(recv);
twisti@4101:   __ load_heap_oop(Address(recv,        NONZERO(java_lang_invoke_MethodHandle::form_offset_in_bytes())),   method_temp);
twisti@3969:   __ verify_oop(method_temp);
twisti@4101:   __ load_heap_oop(Address(method_temp, NONZERO(java_lang_invoke_LambdaForm::vmentry_offset_in_bytes())),  method_temp);
twisti@3969:   __ verify_oop(method_temp);
coleenp@4037:   // the following assumes that a Method* is normally compressed in the vmtarget field:
twisti@4101:   __ ld_ptr(       Address(method_temp, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes())), method_temp);
twisti@3969: 
twisti@3969:   if (VerifyMethodHandles && !for_compiler_entry) {
twisti@3969:     // make sure recv is already on stack
jiangli@4338:     __ ld_ptr(method_temp, in_bytes(Method::const_offset()), temp2);
jiangli@4338:     __ load_sized_value(Address(temp2, ConstMethod::size_of_parameters_offset()),
twisti@3969:                         temp2,
twisti@3969:                         sizeof(u2), /*is_signed*/ false);
coleenp@4037:     // assert(sizeof(u2) == sizeof(Method::_size_of_parameters), "");
twisti@3969:     Label L;
twisti@3969:     __ ld_ptr(__ argument_address(temp2, temp2, -1), temp2);
twisti@3969:     __ cmp_and_br_short(temp2, recv, Assembler::equal, Assembler::pt, L);
twisti@3969:     __ STOP("receiver not on stack");
twisti@3969:     __ BIND(L);
twisti@3969:   }
twisti@3969: 
twisti@3969:   jump_from_method_handle(_masm, method_temp, temp2, temp3, for_compiler_entry);
twisti@3969:   BLOCK_COMMENT("} jump_to_lambda_form");
twisti@3969: }
twisti@3969: 
never@3005: 
jrose@1145: // Code generation
twisti@3969: address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm,
twisti@3969:                                                                 vmIntrinsics::ID iid) {
twisti@3969:   const bool not_for_compiler_entry = false;  // this is the interpreter entry
twisti@3969:   assert(is_signature_polymorphic(iid), "expected invoke iid");
twisti@3969:   if (iid == vmIntrinsics::_invokeGeneric ||
twisti@3969:       iid == vmIntrinsics::_compiledLambdaForm) {
twisti@3969:     // Perhaps surprisingly, the symbolic references visible to Java are not directly used.
twisti@3969:     // They are linked to Java-generated adapters via MethodHandleNatives.linkMethod.
twisti@3969:     // They all allow an appendix argument.
twisti@3969:     __ should_not_reach_here();           // empty stubs make SG sick
twisti@3969:     return NULL;
twisti@3969:   }
twisti@3969: 
twisti@3969:   // I5_savedSP/O5_savedSP: sender SP (must preserve; see prepare_to_jump_from_interpreted)
coleenp@4037:   // G5_method:  Method*
twisti@1858:   // G4 (Gargs): incoming argument list (must preserve)
twisti@3969:   // O0: used as temp to hold mh or receiver
twisti@3969:   // O1, O4: garbage temps, blown away
twisti@3969:   Register O1_scratch    = O1;
twisti@3969:   Register O4_param_size = O4;   // size of parameters
twisti@1858: 
twisti@1858:   // here's where control starts out:
twisti@1858:   __ align(CodeEntryAlignment);
twisti@1858:   address entry_point = __ pc();
twisti@1858: 
twisti@3969:   if (VerifyMethodHandles) {
twisti@3969:     Label L;
twisti@3969:     BLOCK_COMMENT("verify_intrinsic_id {");
coleenp@4037:     __ ldub(Address(G5_method, Method::intrinsic_id_offset_in_bytes()), O1_scratch);
twisti@3969:     __ cmp_and_br_short(O1_scratch, (int) iid, Assembler::equal, Assembler::pt, L);
twisti@3969:     if (iid == vmIntrinsics::_linkToVirtual ||
twisti@3969:         iid == vmIntrinsics::_linkToSpecial) {
twisti@3969:       // could do this for all kinds, but would explode assembly code size
coleenp@4037:       trace_method_handle(_masm, "bad Method*::intrinsic_id");
twisti@1858:     }
coleenp@4037:     __ STOP("bad Method*::intrinsic_id");
twisti@3969:     __ bind(L);
twisti@3969:     BLOCK_COMMENT("} verify_intrinsic_id");
twisti@1858:   }
twisti@1858: 
twisti@3969:   // First task:  Find out how big the argument list is.
twisti@3969:   Address O4_first_arg_addr;
twisti@3969:   int ref_kind = signature_polymorphic_intrinsic_ref_kind(iid);
twisti@3969:   assert(ref_kind != 0 || iid == vmIntrinsics::_invokeBasic, "must be _invokeBasic or a linkTo intrinsic");
twisti@3969:   if (ref_kind == 0 || MethodHandles::ref_kind_has_receiver(ref_kind)) {
jiangli@4338:     __ ld_ptr(G5_method, in_bytes(Method::const_offset()), O4_param_size);
jiangli@4338:     __ load_sized_value(Address(O4_param_size, ConstMethod::size_of_parameters_offset()),
twisti@3969:                         O4_param_size,
twisti@3969:                         sizeof(u2), /*is_signed*/ false);
coleenp@4037:     // assert(sizeof(u2) == sizeof(Method::_size_of_parameters), "");
twisti@3969:     O4_first_arg_addr = __ argument_address(O4_param_size, O4_param_size, -1);
twisti@3969:   } else {
twisti@3969:     DEBUG_ONLY(O4_param_size = noreg);
twisti@3969:   }
twisti@1858: 
twisti@3969:   Register O0_mh = noreg;
twisti@3969:   if (!is_signature_polymorphic_static(iid)) {
twisti@3969:     __ ld_ptr(O4_first_arg_addr, O0_mh = O0);
twisti@3969:     DEBUG_ONLY(O4_param_size = noreg);
twisti@3969:   }
jrose@2266: 
twisti@3969:   // O4_first_arg_addr is live!
never@2950: 
twisti@3969:   if (TraceMethodHandles) {
twisti@3969:     if (O0_mh != noreg)
twisti@3969:       __ mov(O0_mh, G3_method_handle);  // make stub happy
twisti@4158:     trace_method_handle_interpreter_entry(_masm, iid);
twisti@3969:   }
never@2950: 
twisti@3969:   if (iid == vmIntrinsics::_invokeBasic) {
twisti@3969:     generate_method_handle_dispatch(_masm, iid, O0_mh, noreg, not_for_compiler_entry);
twisti@1858: 
twisti@3969:   } else {
twisti@3969:     // Adjust argument list by popping the trailing MemberName argument.
twisti@3969:     Register O0_recv = noreg;
twisti@3969:     if (MethodHandles::ref_kind_has_receiver(ref_kind)) {
twisti@3969:       // Load the receiver (not the MH; the actual MemberName's receiver) up from the interpreter stack.
twisti@3969:       __ ld_ptr(O4_first_arg_addr, O0_recv = O0);
twisti@3969:       DEBUG_ONLY(O4_param_size = noreg);
twisti@3969:     }
twisti@3969:     Register G5_member = G5_method;  // MemberName ptr; incoming method ptr is dead now
twisti@3969:     __ ld_ptr(__ argument_address(constant(0)), G5_member);
twisti@3969:     __ add(Gargs, Interpreter::stackElementSize, Gargs);
twisti@3969:     generate_method_handle_dispatch(_masm, iid, O0_recv, G5_member, not_for_compiler_entry);
jrose@2266:   }
jrose@2266: 
twisti@1858:   return entry_point;
jrose@1145: }
jrose@1145: 
twisti@3969: void MethodHandles::generate_method_handle_dispatch(MacroAssembler* _masm,
twisti@3969:                                                     vmIntrinsics::ID iid,
twisti@3969:                                                     Register receiver_reg,
twisti@3969:                                                     Register member_reg,
twisti@3969:                                                     bool for_compiler_entry) {
twisti@3969:   assert(is_signature_polymorphic(iid), "expected invoke iid");
twisti@3969:   Register temp1 = (for_compiler_entry ? G1_scratch : O1);
twisti@4101:   Register temp2 = (for_compiler_entry ? G3_scratch : O2);
twisti@4101:   Register temp3 = (for_compiler_entry ? G4_scratch : O3);
twisti@4101:   Register temp4 = (for_compiler_entry ? noreg      : O4);
twisti@3969:   if (for_compiler_entry) {
twisti@3969:     assert(receiver_reg == (iid == vmIntrinsics::_linkToStatic ? noreg : O0), "only valid assignment");
twisti@4101:     assert_different_registers(temp1, O0, O1, O2, O3, O4, O5);
twisti@4101:     assert_different_registers(temp2, O0, O1, O2, O3, O4, O5);
twisti@4101:     assert_different_registers(temp3, O0, O1, O2, O3, O4, O5);
twisti@4101:     assert_different_registers(temp4, O0, O1, O2, O3, O4, O5);
twisti@4101:   } else {
twisti@4101:     assert_different_registers(temp1, temp2, temp3, temp4, O5_savedSP);  // don't trash lastSP
twisti@3969:   }
twisti@3969:   if (receiver_reg != noreg)  assert_different_registers(temp1, temp2, temp3, temp4, receiver_reg);
twisti@3969:   if (member_reg   != noreg)  assert_different_registers(temp1, temp2, temp3, temp4, member_reg);
twisti@1858: 
twisti@3969:   if (iid == vmIntrinsics::_invokeBasic) {
twisti@3969:     // indirect through MH.form.vmentry.vmtarget
twisti@4101:     jump_to_lambda_form(_masm, receiver_reg, G5_method, temp1, temp2, for_compiler_entry);
never@2950: 
never@2950:   } else {
twisti@3969:     // The method is a member invoker used by direct method handles.
twisti@3969:     if (VerifyMethodHandles) {
twisti@3969:       // make sure the trailing argument really is a MemberName (caller responsibility)
coleenp@4037:       verify_klass(_masm, member_reg, SystemDictionary::WK_KLASS_ENUM_NAME(MemberName_klass),
twisti@3969:                    temp1, temp2,
twisti@3969:                    "MemberName required for invokeVirtual etc.");
twisti@3969:     }
twisti@3969: 
twisti@3969:     Address member_clazz(    member_reg, NONZERO(java_lang_invoke_MemberName::clazz_offset_in_bytes()));
twisti@3969:     Address member_vmindex(  member_reg, NONZERO(java_lang_invoke_MemberName::vmindex_offset_in_bytes()));
twisti@3969:     Address member_vmtarget( member_reg, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes()));
twisti@3969: 
twisti@3969:     Register temp1_recv_klass = temp1;
twisti@3969:     if (iid != vmIntrinsics::_linkToStatic) {
twisti@3969:       __ verify_oop(receiver_reg);
twisti@3969:       if (iid == vmIntrinsics::_linkToSpecial) {
twisti@3969:         // Don't actually load the klass; just null-check the receiver.
twisti@3969:         __ null_check(receiver_reg);
twisti@3969:       } else {
twisti@3969:         // load receiver klass itself
twisti@3969:         __ null_check(receiver_reg, oopDesc::klass_offset_in_bytes());
twisti@3969:         __ load_klass(receiver_reg, temp1_recv_klass);
coleenp@4052:         __ verify_klass_ptr(temp1_recv_klass);
twisti@3969:       }
twisti@3969:       BLOCK_COMMENT("check_receiver {");
twisti@3969:       // The receiver for the MemberName must be in receiver_reg.
twisti@3969:       // Check the receiver against the MemberName.clazz
twisti@3969:       if (VerifyMethodHandles && iid == vmIntrinsics::_linkToSpecial) {
twisti@3969:         // Did not load it above...
twisti@3969:         __ load_klass(receiver_reg, temp1_recv_klass);
coleenp@4052:         __ verify_klass_ptr(temp1_recv_klass);
twisti@3969:       }
twisti@3969:       if (VerifyMethodHandles && iid != vmIntrinsics::_linkToInterface) {
twisti@3969:         Label L_ok;
twisti@3969:         Register temp2_defc = temp2;
twisti@3969:         __ load_heap_oop(member_clazz, temp2_defc);
twisti@3969:         load_klass_from_Class(_masm, temp2_defc, temp3, temp4);
coleenp@4052:         __ verify_klass_ptr(temp2_defc);
twisti@3969:         __ check_klass_subtype(temp1_recv_klass, temp2_defc, temp3, temp4, L_ok);
twisti@3969:         // If we get here, the type check failed!
twisti@3969:         __ STOP("receiver class disagrees with MemberName.clazz");
twisti@3969:         __ bind(L_ok);
twisti@3969:       }
twisti@3969:       BLOCK_COMMENT("} check_receiver");
twisti@3969:     }
twisti@3969:     if (iid == vmIntrinsics::_linkToSpecial ||
twisti@3969:         iid == vmIntrinsics::_linkToStatic) {
twisti@3969:       DEBUG_ONLY(temp1_recv_klass = noreg);  // these guys didn't load the recv_klass
twisti@3969:     }
twisti@3969: 
twisti@3969:     // Live registers at this point:
twisti@3969:     //  member_reg - MemberName that was the trailing argument
twisti@3969:     //  temp1_recv_klass - klass of stacked receiver, if needed
twisti@3969:     //  O5_savedSP - interpreter linkage (if interpreted)
twisti@4101:     //  O0..O5 - compiler arguments (if compiled)
twisti@3969: 
twisti@4101:     Label L_incompatible_class_change_error;
twisti@3969:     switch (iid) {
twisti@3969:     case vmIntrinsics::_linkToSpecial:
twisti@3969:       if (VerifyMethodHandles) {
twisti@4101:         verify_ref_kind(_masm, JVM_REF_invokeSpecial, member_reg, temp2);
twisti@3969:       }
coleenp@4037:       __ ld_ptr(member_vmtarget, G5_method);
twisti@3969:       break;
twisti@3969: 
twisti@3969:     case vmIntrinsics::_linkToStatic:
twisti@3969:       if (VerifyMethodHandles) {
twisti@4101:         verify_ref_kind(_masm, JVM_REF_invokeStatic, member_reg, temp2);
twisti@3969:       }
coleenp@4037:       __ ld_ptr(member_vmtarget, G5_method);
twisti@3969:       break;
twisti@3969: 
twisti@3969:     case vmIntrinsics::_linkToVirtual:
never@2950:     {
twisti@3969:       // same as TemplateTable::invokevirtual,
twisti@3969:       // minus the CP setup and profiling:
twisti@3969: 
twisti@3969:       if (VerifyMethodHandles) {
twisti@4101:         verify_ref_kind(_masm, JVM_REF_invokeVirtual, member_reg, temp2);
twisti@3969:       }
twisti@3969: 
twisti@3969:       // pick out the vtable index from the MemberName, and then we can discard it:
twisti@3969:       Register temp2_index = temp2;
twisti@3969:       __ ld_ptr(member_vmindex, temp2_index);
twisti@3969: 
twisti@3969:       if (VerifyMethodHandles) {
twisti@3969:         Label L_index_ok;
twisti@3969:         __ cmp_and_br_short(temp2_index, (int) 0, Assembler::greaterEqual, Assembler::pn, L_index_ok);
twisti@3969:         __ STOP("no virtual index");
twisti@3969:         __ BIND(L_index_ok);
twisti@3969:       }
twisti@3969: 
twisti@3969:       // Note:  The verifier invariants allow us to ignore MemberName.clazz and vmtarget
twisti@3969:       // at this point.  And VerifyMethodHandles has already checked clazz, if needed.
twisti@3969: 
coleenp@4037:       // get target Method* & entry point
twisti@3969:       __ lookup_virtual_method(temp1_recv_klass, temp2_index, G5_method);
twisti@3969:       break;
never@2950:     }
twisti@3969: 
twisti@3969:     case vmIntrinsics::_linkToInterface:
twisti@3969:     {
twisti@3969:       // same as TemplateTable::invokeinterface
twisti@3969:       // (minus the CP setup and profiling, with different argument motion)
twisti@3969:       if (VerifyMethodHandles) {
twisti@4101:         verify_ref_kind(_masm, JVM_REF_invokeInterface, member_reg, temp2);
twisti@3969:       }
twisti@3969: 
twisti@4101:       Register temp2_intf = temp2;
twisti@4101:       __ load_heap_oop(member_clazz, temp2_intf);
twisti@4101:       load_klass_from_Class(_masm, temp2_intf, temp3, temp4);
twisti@4101:       __ verify_klass_ptr(temp2_intf);
twisti@3969: 
twisti@3969:       Register G5_index = G5_method;
twisti@3969:       __ ld_ptr(member_vmindex, G5_index);
twisti@3969:       if (VerifyMethodHandles) {
twisti@3969:         Label L;
twisti@3969:         __ cmp_and_br_short(G5_index, 0, Assembler::greaterEqual, Assembler::pt, L);
twisti@3969:         __ STOP("invalid vtable index for MH.invokeInterface");
twisti@3969:         __ bind(L);
twisti@3969:       }
twisti@3969: 
twisti@3969:       // given intf, index, and recv klass, dispatch to the implementation method
twisti@4101:       __ lookup_interface_method(temp1_recv_klass, temp2_intf,
twisti@3969:                                  // note: next two args must be the same:
twisti@3969:                                  G5_index, G5_method,
twisti@4101:                                  temp3, temp4,
twisti@4101:                                  L_incompatible_class_change_error);
twisti@3969:       break;
twisti@3969:     }
twisti@3969: 
twisti@3969:     default:
twisti@4101:       fatal(err_msg_res("unexpected intrinsic %d: %s", iid, vmIntrinsics::name_at(iid)));
twisti@3969:       break;
twisti@3969:     }
twisti@3969: 
twisti@4101:     // Live at this point:
twisti@4101:     //   G5_method
twisti@4101:     //   O5_savedSP (if interpreted)
twisti@3969: 
twisti@4101:     // After figuring out which concrete method to call, jump into it.
twisti@4101:     // Note that this works in the interpreter with no data motion.
twisti@4101:     // But the compiled version will require that rcx_recv be shifted out.
twisti@4101:     __ verify_method_ptr(G5_method);
twisti@4101:     jump_from_method_handle(_masm, G5_method, temp1, temp2, for_compiler_entry);
twisti@4101: 
twisti@4101:     if (iid == vmIntrinsics::_linkToInterface) {
twisti@4101:       __ BIND(L_incompatible_class_change_error);
twisti@4101:       AddressLiteral icce(StubRoutines::throw_IncompatibleClassChangeError_entry());
twisti@4101:       __ jump_to(icce, temp1);
twisti@4101:       __ delayed()->nop();
twisti@3969:     }
never@2950:   }
twisti@1858: }
twisti@1858: 
bdelsart@3451: #ifndef PRODUCT
twisti@1858: void trace_method_handle_stub(const char* adaptername,
never@2868:                               oopDesc* mh,
bdelsart@3451:                               intptr_t* saved_sp,
bdelsart@3451:                               intptr_t* args,
bdelsart@3451:                               intptr_t* tracing_fp) {
twisti@3969:   bool has_mh = (strstr(adaptername, "/static") == NULL &&
twisti@3969:                  strstr(adaptername, "linkTo") == NULL);    // static linkers don't have MH
twisti@3969:   const char* mh_reg_name = has_mh ? "G3_mh" : "G3";
kevinw@9327:   tty->print_cr("MH %s %s=" INTPTR_FORMAT " saved_sp=" INTPTR_FORMAT " args=" INTPTR_FORMAT,
twisti@3969:                 adaptername, mh_reg_name,
twisti@3969:                 (intptr_t) mh, saved_sp, args);
bdelsart@3451: 
bdelsart@3451:   if (Verbose) {
bdelsart@3451:     // dumping last frame with frame::describe
bdelsart@3451: 
bdelsart@3451:     JavaThread* p = JavaThread::active();
bdelsart@3451: 
bdelsart@3451:     ResourceMark rm;
bdelsart@3451:     PRESERVE_EXCEPTION_MARK; // may not be needed by safer and unexpensive here
bdelsart@3451:     FrameValues values;
bdelsart@3451: 
bdelsart@3451:     // Note: We want to allow trace_method_handle from any call site.
bdelsart@3451:     // While trace_method_handle creates a frame, it may be entered
bdelsart@3451:     // without a valid return PC in O7 (e.g. not just after a call).
bdelsart@3451:     // Walking that frame could lead to failures due to that invalid PC.
bdelsart@3451:     // => carefully detect that frame when doing the stack walking
bdelsart@3451: 
bdelsart@3451:     // walk up to the right frame using the "tracing_fp" argument
bdelsart@3451:     intptr_t* cur_sp = StubRoutines::Sparc::flush_callers_register_windows_func()();
bdelsart@3451:     frame cur_frame(cur_sp, frame::unpatchable, NULL);
bdelsart@3451: 
bdelsart@3451:     while (cur_frame.fp() != (intptr_t *)(STACK_BIAS+(uintptr_t)tracing_fp)) {
bdelsart@3451:       cur_frame = os::get_sender_for_C_frame(&cur_frame);
bdelsart@3451:     }
bdelsart@3451: 
bdelsart@3451:     // safely create a frame and call frame::describe
bdelsart@3451:     intptr_t *dump_sp = cur_frame.sender_sp();
bdelsart@3451:     intptr_t *dump_fp = cur_frame.link();
bdelsart@3451: 
bdelsart@3451:     bool walkable = has_mh; // whether the traced frame shoud be walkable
bdelsart@3451: 
bdelsart@3451:     // the sender for cur_frame is the caller of trace_method_handle
bdelsart@3451:     if (walkable) {
bdelsart@3451:       // The previous definition of walkable may have to be refined
bdelsart@3451:       // if new call sites cause the next frame constructor to start
bdelsart@3451:       // failing. Alternatively, frame constructors could be
bdelsart@3451:       // modified to support the current or future non walkable
bdelsart@3451:       // frames (but this is more intrusive and is not considered as
bdelsart@3451:       // part of this RFE, which will instead use a simpler output).
bdelsart@3451:       frame dump_frame = frame(dump_sp,
bdelsart@3451:                                cur_frame.sp(), // younger_sp
bdelsart@3451:                                false); // no adaptation
bdelsart@3451:       dump_frame.describe(values, 1);
bdelsart@3451:     } else {
bdelsart@3451:       // Robust dump for frames which cannot be constructed from sp/younger_sp
bdelsart@3451:       // Add descriptions without building a Java frame to avoid issues
bdelsart@3451:       values.describe(-1, dump_fp, "fp for #1 <not parsed, cannot trust pc>");
bdelsart@3451:       values.describe(-1, dump_sp, "sp");
bdelsart@3451:     }
bdelsart@3451: 
bdelsart@3451:     bool has_args = has_mh; // whether Gargs is meaningful
bdelsart@3451: 
bdelsart@3451:     // mark args, if seems valid (may not be valid for some adapters)
bdelsart@3451:     if (has_args) {
bdelsart@3451:       if ((args >= dump_sp) && (args < dump_fp)) {
bdelsart@3451:         values.describe(-1, args, "*G4_args");
bdelsart@3451:       }
bdelsart@3451:     }
bdelsart@3451: 
bdelsart@3451:     // mark saved_sp, if seems valid (may not be valid for some adapters)
bdelsart@3451:     intptr_t *unbiased_sp = (intptr_t *)(STACK_BIAS+(uintptr_t)saved_sp);
twisti@3969:     const int ARG_LIMIT = 255, SLOP = 45, UNREASONABLE_STACK_MOVE = (ARG_LIMIT + SLOP);
bdelsart@3451:     if ((unbiased_sp >= dump_sp - UNREASONABLE_STACK_MOVE) && (unbiased_sp < dump_fp)) {
bdelsart@3451:       values.describe(-1, unbiased_sp, "*saved_sp+STACK_BIAS");
bdelsart@3451:     }
bdelsart@3451: 
bdelsart@3451:     // Note: the unextended_sp may not be correct
bdelsart@3451:     tty->print_cr("  stack layout:");
bdelsart@3451:     values.print(p);
twisti@3969:     if (has_mh && mh->is_oop()) {
twisti@3969:       mh->print();
twisti@3969:       if (java_lang_invoke_MethodHandle::is_instance(mh)) {
twisti@3969:         if (java_lang_invoke_MethodHandle::form_offset_in_bytes() != 0)
twisti@3969:           java_lang_invoke_MethodHandle::form(mh)->print();
twisti@3969:       }
twisti@3969:     }
bdelsart@3451:   }
twisti@1858: }
bdelsart@3451: 
twisti@2204: void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) {
twisti@2204:   if (!TraceMethodHandles)  return;
twisti@2204:   BLOCK_COMMENT("trace_method_handle {");
twisti@2204:   // save: Gargs, O5_savedSP
bdelsart@3451:   __ save_frame(16); // need space for saving required FPU state
bdelsart@3451: 
twisti@2204:   __ set((intptr_t) adaptername, O0);
twisti@2204:   __ mov(G3_method_handle, O1);
never@2868:   __ mov(I5_savedSP, O2);
bdelsart@3451:   __ mov(Gargs, O3);
bdelsart@3451:   __ mov(I6, O4); // frame identifier for safe stack walking
bdelsart@3451: 
bdelsart@3451:   // Save scratched registers that might be needed. Robustness is more
bdelsart@3451:   // important than optimizing the saves for this debug only code.
bdelsart@3451: 
bdelsart@3451:   // save FP result, valid at some call sites (adapter_opt_return_float, ...)
bdelsart@3451:   Address d_save(FP, -sizeof(jdouble) + STACK_BIAS);
bdelsart@3451:   __ stf(FloatRegisterImpl::D, Ftos_d, d_save);
bdelsart@3451:   // Safely save all globals but G2 (handled by call_VM_leaf) and G7
bdelsart@3451:   // (OS reserved).
twisti@2204:   __ mov(G3_method_handle, L3);
twisti@2204:   __ mov(Gargs, L4);
twisti@2204:   __ mov(G5_method_type, L5);
bdelsart@3451:   __ mov(G6, L6);
bdelsart@3451:   __ mov(G1, L1);
bdelsart@3451: 
bdelsart@3451:   __ call_VM_leaf(L2 /* for G2 */, CAST_FROM_FN_PTR(address, trace_method_handle_stub));
twisti@2204: 
twisti@2204:   __ mov(L3, G3_method_handle);
twisti@2204:   __ mov(L4, Gargs);
twisti@2204:   __ mov(L5, G5_method_type);
bdelsart@3451:   __ mov(L6, G6);
bdelsart@3451:   __ mov(L1, G1);
bdelsart@3451:   __ ldf(FloatRegisterImpl::D, d_save, Ftos_d);
bdelsart@3451: 
twisti@2204:   __ restore();
twisti@2204:   BLOCK_COMMENT("} trace_method_handle");
twisti@2204: }
twisti@1858: #endif // PRODUCT