--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cpu/ppc/vm/methodHandles_ppc.cpp	Fri Aug 02 16:46:45 2013 +0200
@@ -0,0 +1,540 @@
+/*
+ * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2012, 2013 SAP AG. 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 "asm/macroAssembler.inline.hpp"
+#include "interpreter/interpreter.hpp"
+#include "memory/allocation.inline.hpp"
+#include "prims/methodHandles.hpp"
+
+#define __ _masm->
+
+#ifdef PRODUCT
+#define BLOCK_COMMENT(str) // nothing
+#define STOP(error) stop(error)
+#else
+#define BLOCK_COMMENT(str) __ block_comment(str)
+#define STOP(error) block_comment(error); __ stop(error)
+#endif
+
+#define BIND(label) bind(label); BLOCK_COMMENT(#label ":")
+
+// Workaround for C++ overloading nastiness on '0' for RegisterOrConstant.
+inline static RegisterOrConstant constant(int value) {
+  return RegisterOrConstant(value);
+}
+
+void MethodHandles::load_klass_from_Class(MacroAssembler* _masm, Register klass_reg, Register temp_reg, Register temp2_reg) {
+  if (VerifyMethodHandles)
+    verify_klass(_masm, klass_reg, SystemDictionary::WK_KLASS_ENUM_NAME(java_lang_Class), temp_reg, temp2_reg,
+                 "MH argument is a Class");
+  __ ld(klass_reg, java_lang_Class::klass_offset_in_bytes(), klass_reg);
+}
+
+#ifdef ASSERT
+static int check_nonzero(const char* xname, int x) {
+  assert(x != 0, err_msg("%s should be nonzero", xname));
+  return x;
+}
+#define NONZERO(x) check_nonzero(#x, x)
+#else //ASSERT
+#define NONZERO(x) (x)
+#endif //ASSERT
+
+#ifdef ASSERT
+void MethodHandles::verify_klass(MacroAssembler* _masm,
+                                 Register obj_reg, SystemDictionary::WKID klass_id,
+                                 Register temp_reg, Register temp2_reg,
+                                 const char* error_message) {
+  Klass** klass_addr = SystemDictionary::well_known_klass_addr(klass_id);
+  KlassHandle klass = SystemDictionary::well_known_klass(klass_id);
+  Label L_ok, L_bad;
+  BLOCK_COMMENT("verify_klass {");
+  __ verify_oop(obj_reg);
+  __ cmpdi(CCR0, obj_reg, 0);
+  __ beq(CCR0, L_bad);
+  __ load_klass(temp_reg, obj_reg);
+  __ load_const_optimized(temp2_reg, (address) klass_addr);
+  __ ld(temp2_reg, 0, temp2_reg);
+  __ cmpd(CCR0, temp_reg, temp2_reg);
+  __ beq(CCR0, L_ok);
+  __ ld(temp_reg, klass->super_check_offset(), temp_reg);
+  __ cmpd(CCR0, temp_reg, temp2_reg);
+  __ beq(CCR0, L_ok);
+  __ BIND(L_bad);
+  __ stop(error_message);
+  __ BIND(L_ok);
+  BLOCK_COMMENT("} verify_klass");
+}
+
+void MethodHandles::verify_ref_kind(MacroAssembler* _masm, int ref_kind, Register member_reg, Register temp) {
+  Label L;
+  BLOCK_COMMENT("verify_ref_kind {");
+  __ load_sized_value(temp, NONZERO(java_lang_invoke_MemberName::flags_offset_in_bytes()), member_reg,
+                      sizeof(u4), /*is_signed*/ false);
+  // assert(sizeof(u4) == sizeof(java.lang.invoke.MemberName.flags), "");
+  __ srwi( temp, temp, java_lang_invoke_MemberName::MN_REFERENCE_KIND_SHIFT);
+  __ andi(temp, temp, java_lang_invoke_MemberName::MN_REFERENCE_KIND_MASK);
+  __ cmpwi(CCR1, temp, ref_kind);
+  __ beq(CCR1, L);
+  { char* buf = NEW_C_HEAP_ARRAY(char, 100, mtInternal);
+    jio_snprintf(buf, 100, "verify_ref_kind expected %x", ref_kind);
+    if (ref_kind == JVM_REF_invokeVirtual ||
+        ref_kind == JVM_REF_invokeSpecial)
+      // could do this for all ref_kinds, but would explode assembly code size
+      trace_method_handle(_masm, buf);
+    __ stop(buf);
+  }
+  BLOCK_COMMENT("} verify_ref_kind");
+  __ BIND(L);
+}
+
+#endif // ASSERT
+
+void MethodHandles::jump_from_method_handle(MacroAssembler* _masm, Register method, Register target, Register temp,
+                                            bool for_compiler_entry) {
+  assert(method == R19_method, "interpreter calling convention");
+  assert_different_registers(method, target, temp);
+
+  if (!for_compiler_entry && JvmtiExport::can_post_interpreter_events()) {
+    Label run_compiled_code;
+    // JVMTI events, such as single-stepping, are implemented partly by avoiding running
+    // compiled code in threads for which the event is enabled.  Check here for
+    // interp_only_mode if these events CAN be enabled.
+    __ verify_thread();
+    __ lwz(temp, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread);
+    __ cmplwi(CCR0, temp, 0);
+    __ beq(CCR0, run_compiled_code);
+    __ ld(target, in_bytes(Method::interpreter_entry_offset()), R19_method);
+    __ mtctr(target);
+    __ bctr();
+    __ BIND(run_compiled_code);
+  }
+
+  const ByteSize entry_offset = for_compiler_entry ? Method::from_compiled_offset() :
+                                                     Method::from_interpreted_offset();
+  __ ld(target, in_bytes(entry_offset), R19_method);
+  __ mtctr(target);
+  __ bctr();
+}
+
+
+void MethodHandles::jump_to_lambda_form(MacroAssembler* _masm,
+                                        Register recv, Register method_temp,
+                                        Register temp2, Register temp3,
+                                        bool for_compiler_entry) {
+  BLOCK_COMMENT("jump_to_lambda_form {");
+  // This is the initial entry point of a lazy method handle.
+  // After type checking, it picks up the invoker from the LambdaForm.
+  assert_different_registers(recv, method_temp, temp2);  // temp3 is only passed on
+  assert(method_temp == R19_method, "required register for loading method");
+
+  // Load the invoker, as MH -> MH.form -> LF.vmentry
+  __ verify_oop(recv);
+  __ load_heap_oop_not_null(method_temp, NONZERO(java_lang_invoke_MethodHandle::form_offset_in_bytes()), recv);
+  __ verify_oop(method_temp);
+  __ load_heap_oop_not_null(method_temp, NONZERO(java_lang_invoke_LambdaForm::vmentry_offset_in_bytes()), method_temp);
+  __ verify_oop(method_temp);
+  // the following assumes that a Method* is normally compressed in the vmtarget field:
+  __ ld(method_temp, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes()), method_temp);
+
+  if (VerifyMethodHandles && !for_compiler_entry) {
+    // make sure recv is already on stack
+    __ ld(temp2, in_bytes(Method::const_offset()), method_temp);
+    __ load_sized_value(temp2, in_bytes(ConstMethod::size_of_parameters_offset()), temp2,
+                        sizeof(u2), /*is_signed*/ false);
+    // assert(sizeof(u2) == sizeof(ConstMethod::_size_of_parameters), "");
+    Label L;
+    __ ld(temp2, __ argument_offset(temp2, temp2, 0), R17_tos);
+    __ cmpd(CCR1, temp2, recv);
+    __ beq(CCR1, L);
+    __ stop("receiver not on stack");
+    __ BIND(L);
+  }
+
+  jump_from_method_handle(_masm, method_temp, temp2, temp3, for_compiler_entry);
+  BLOCK_COMMENT("} jump_to_lambda_form");
+}
+
+
+
+// Code generation
+address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm,
+                                                                vmIntrinsics::ID iid) {
+  const bool not_for_compiler_entry = false;  // this is the interpreter entry
+  assert(is_signature_polymorphic(iid), "expected invoke iid");
+  if (iid == vmIntrinsics::_invokeGeneric ||
+      iid == vmIntrinsics::_compiledLambdaForm) {
+    // Perhaps surprisingly, the symbolic references visible to Java are not directly used.
+    // They are linked to Java-generated adapters via MethodHandleNatives.linkMethod.
+    // They all allow an appendix argument.
+    __ stop("Should not reach here");           // empty stubs make SG sick
+    return NULL;
+  }
+
+  Register argbase    = R17_tos; // parameter (preserved)
+  Register argslot    = R3;
+  Register temp1      = R6;
+  Register param_size = R7;
+
+  // here's where control starts out:
+  __ align(CodeEntryAlignment);
+  address entry_point = __ pc();
+
+  if (VerifyMethodHandles) {
+    Label L;
+    BLOCK_COMMENT("verify_intrinsic_id {");
+    __ load_sized_value(temp1, Method::intrinsic_id_offset_in_bytes(), R19_method,
+                        sizeof(u1), /*is_signed*/ false);
+    // assert(sizeof(u1) == sizeof(Method::_intrinsic_id), "");
+    __ cmpwi(CCR1, temp1, (int) iid);
+    __ beq(CCR1, L);
+    if (iid == vmIntrinsics::_linkToVirtual ||
+        iid == vmIntrinsics::_linkToSpecial) {
+      // could do this for all kinds, but would explode assembly code size
+      trace_method_handle(_masm, "bad Method*:intrinsic_id");
+    }
+    __ stop("bad Method*::intrinsic_id");
+    __ BIND(L);
+    BLOCK_COMMENT("} verify_intrinsic_id");
+  }
+
+  // First task:  Find out how big the argument list is.
+  int ref_kind = signature_polymorphic_intrinsic_ref_kind(iid);
+  assert(ref_kind != 0 || iid == vmIntrinsics::_invokeBasic, "must be _invokeBasic or a linkTo intrinsic");
+  if (ref_kind == 0 || MethodHandles::ref_kind_has_receiver(ref_kind)) {
+    __ ld(param_size, in_bytes(Method::const_offset()), R19_method);
+    __ load_sized_value(param_size, in_bytes(ConstMethod::size_of_parameters_offset()), param_size,
+                        sizeof(u2), /*is_signed*/ false);
+    // assert(sizeof(u2) == sizeof(ConstMethod::_size_of_parameters), "");
+  } else {
+    DEBUG_ONLY(param_size = noreg);
+  }
+
+  Register tmp_mh = noreg;
+  if (!is_signature_polymorphic_static(iid)) {
+    __ ld(tmp_mh = temp1, __ argument_offset(param_size, param_size, 0), argbase);
+    DEBUG_ONLY(param_size = noreg);
+  }
+
+  if (TraceMethodHandles) {
+    if (tmp_mh != noreg)
+      __ mr(R23_method_handle, tmp_mh);  // make stub happy
+    trace_method_handle_interpreter_entry(_masm, iid);
+  }
+
+  if (iid == vmIntrinsics::_invokeBasic) {
+    generate_method_handle_dispatch(_masm, iid, tmp_mh, noreg, not_for_compiler_entry);
+
+  } else {
+    // Adjust argument list by popping the trailing MemberName argument.
+    Register tmp_recv = noreg;
+    if (MethodHandles::ref_kind_has_receiver(ref_kind)) {
+      // Load the receiver (not the MH; the actual MemberName's receiver) up from the interpreter stack.
+      __ ld(tmp_recv = temp1, __ argument_offset(param_size, param_size, 0), argbase);
+      DEBUG_ONLY(param_size = noreg);
+    }
+    Register R19_member = R19_method;  // MemberName ptr; incoming method ptr is dead now
+    __ ld(R19_member, RegisterOrConstant((intptr_t)8), argbase);
+    __ add(argbase, Interpreter::stackElementSize, argbase);
+    generate_method_handle_dispatch(_masm, iid, tmp_recv, R19_member, not_for_compiler_entry);
+  }
+
+  return entry_point;
+}
+
+void MethodHandles::generate_method_handle_dispatch(MacroAssembler* _masm,
+                                                    vmIntrinsics::ID iid,
+                                                    Register receiver_reg,
+                                                    Register member_reg,
+                                                    bool for_compiler_entry) {
+  assert(is_signature_polymorphic(iid), "expected invoke iid");
+  Register temp1 = (for_compiler_entry ? R21_tmp1 : R7);
+  Register temp2 = (for_compiler_entry ? R22_tmp2 : R8);
+  Register temp3 = (for_compiler_entry ? R23_tmp3 : R9);
+  Register temp4 = (for_compiler_entry ? R24_tmp4 : R10);
+  if (receiver_reg != noreg)  assert_different_registers(temp1, temp2, temp3, temp4, receiver_reg);
+  if (member_reg   != noreg)  assert_different_registers(temp1, temp2, temp3, temp4, member_reg);
+
+  if (iid == vmIntrinsics::_invokeBasic) {
+    // indirect through MH.form.vmentry.vmtarget
+    jump_to_lambda_form(_masm, receiver_reg, R19_method, temp1, temp2, for_compiler_entry);
+  } else {
+    // The method is a member invoker used by direct method handles.
+    if (VerifyMethodHandles) {
+      // make sure the trailing argument really is a MemberName (caller responsibility)
+      verify_klass(_masm, member_reg, SystemDictionary::WK_KLASS_ENUM_NAME(MemberName_klass),
+                   temp1, temp2,
+                   "MemberName required for invokeVirtual etc.");
+    }
+
+    Register temp1_recv_klass = temp1;
+    if (iid != vmIntrinsics::_linkToStatic) {
+      __ verify_oop(receiver_reg);
+      if (iid == vmIntrinsics::_linkToSpecial) {
+        // Don't actually load the klass; just null-check the receiver.
+        __ null_check_throw(receiver_reg, 0, temp1, StubRoutines::throw_NullPointerException_at_call_entry());
+      } else {
+        // load receiver klass itself
+        __ null_check_throw(receiver_reg, oopDesc::klass_offset_in_bytes(),
+                                temp1, StubRoutines::throw_NullPointerException_at_call_entry());
+        __ load_klass(temp1_recv_klass, receiver_reg);
+        __ verify_klass_ptr(temp1_recv_klass);
+      }
+      BLOCK_COMMENT("check_receiver {");
+      // The receiver for the MemberName must be in receiver_reg.
+      // Check the receiver against the MemberName.clazz
+      if (VerifyMethodHandles && iid == vmIntrinsics::_linkToSpecial) {
+        // Did not load it above...
+        __ load_klass(temp1_recv_klass, receiver_reg);
+        __ verify_klass_ptr(temp1_recv_klass);
+      }
+      if (VerifyMethodHandles && iid != vmIntrinsics::_linkToInterface) {
+        Label L_ok;
+        Register temp2_defc = temp2;
+        __ load_heap_oop_not_null(temp2_defc, NONZERO(java_lang_invoke_MemberName::clazz_offset_in_bytes()), member_reg);
+        load_klass_from_Class(_masm, temp2_defc, temp3, temp4);
+        __ verify_klass_ptr(temp2_defc);
+        __ check_klass_subtype(temp1_recv_klass, temp2_defc, temp3, temp4, L_ok);
+        // If we get here, the type check failed!
+        __ stop("receiver class disagrees with MemberName.clazz");
+        __ BIND(L_ok);
+      }
+      BLOCK_COMMENT("} check_receiver");
+    }
+    if (iid == vmIntrinsics::_linkToSpecial ||
+        iid == vmIntrinsics::_linkToStatic) {
+      DEBUG_ONLY(temp1_recv_klass = noreg);  // these guys didn't load the recv_klass
+    }
+
+    // Live registers at this point:
+    //  member_reg - MemberName that was the trailing argument
+    //  temp1_recv_klass - klass of stacked receiver, if needed
+    //  O5_savedSP - interpreter linkage (if interpreted)
+    //  O0..O5 - compiler arguments (if compiled)
+
+    Label L_incompatible_class_change_error;
+    switch (iid) {
+    case vmIntrinsics::_linkToSpecial:
+      if (VerifyMethodHandles) {
+        verify_ref_kind(_masm, JVM_REF_invokeSpecial, member_reg, temp2);
+      }
+      __ ld(R19_method, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes()), member_reg);
+      break;
+
+    case vmIntrinsics::_linkToStatic:
+      if (VerifyMethodHandles) {
+        verify_ref_kind(_masm, JVM_REF_invokeStatic, member_reg, temp2);
+      }
+      __ ld(R19_method, NONZERO(java_lang_invoke_MemberName::vmtarget_offset_in_bytes()), member_reg);
+      break;
+
+    case vmIntrinsics::_linkToVirtual:
+    {
+      // same as TemplateTable::invokevirtual,
+      // minus the CP setup and profiling:
+
+      if (VerifyMethodHandles) {
+        verify_ref_kind(_masm, JVM_REF_invokeVirtual, member_reg, temp2);
+      }
+
+      // pick out the vtable index from the MemberName, and then we can discard it:
+      Register temp2_index = temp2;
+      __ ld(temp2_index, NONZERO(java_lang_invoke_MemberName::vmindex_offset_in_bytes()), member_reg);
+
+      if (VerifyMethodHandles) {
+        Label L_index_ok;
+        __ cmpdi(CCR1, temp2_index, 0);
+        __ bge(CCR1, L_index_ok);
+        __ stop("no virtual index");
+        __ BIND(L_index_ok);
+      }
+
+      // Note:  The verifier invariants allow us to ignore MemberName.clazz and vmtarget
+      // at this point.  And VerifyMethodHandles has already checked clazz, if needed.
+
+      // get target Method* & entry point
+      __ lookup_virtual_method(temp1_recv_klass, temp2_index, R19_method);
+      break;
+    }
+
+    case vmIntrinsics::_linkToInterface:
+    {
+      // same as TemplateTable::invokeinterface
+      // (minus the CP setup and profiling, with different argument motion)
+      if (VerifyMethodHandles) {
+        verify_ref_kind(_masm, JVM_REF_invokeInterface, member_reg, temp2);
+      }
+
+      Register temp2_intf = temp2;
+      __ load_heap_oop_not_null(temp2_intf, NONZERO(java_lang_invoke_MemberName::clazz_offset_in_bytes()), member_reg);
+      load_klass_from_Class(_masm, temp2_intf, temp3, temp4);
+      __ verify_klass_ptr(temp2_intf);
+
+      Register vtable_index = R19_method;
+      __ ld(vtable_index, NONZERO(java_lang_invoke_MemberName::vmindex_offset_in_bytes()), member_reg);
+      if (VerifyMethodHandles) {
+        Label L_index_ok;
+        __ cmpdi(CCR1, vtable_index, 0);
+        __ bge(CCR1, L_index_ok);
+        __ stop("invalid vtable index for MH.invokeInterface");
+        __ BIND(L_index_ok);
+      }
+
+      // given intf, index, and recv klass, dispatch to the implementation method
+      __ lookup_interface_method(temp1_recv_klass, temp2_intf,
+                                 // note: next two args must be the same:
+                                 vtable_index, R19_method,
+                                 temp3, temp4,
+                                 L_incompatible_class_change_error);
+      break;
+    }
+
+    default:
+      fatal(err_msg_res("unexpected intrinsic %d: %s", iid, vmIntrinsics::name_at(iid)));
+      break;
+    }
+
+    // Live at this point:
+    //   R19_method
+    //   O5_savedSP (if interpreted)
+
+    // After figuring out which concrete method to call, jump into it.
+    // Note that this works in the interpreter with no data motion.
+    // But the compiled version will require that rcx_recv be shifted out.
+    __ verify_method_ptr(R19_method);
+    jump_from_method_handle(_masm, R19_method, temp1, temp2, for_compiler_entry);
+
+    if (iid == vmIntrinsics::_linkToInterface) {
+      __ BIND(L_incompatible_class_change_error);
+      __ load_const_optimized(temp1, StubRoutines::throw_IncompatibleClassChangeError_entry());
+      __ mtctr(temp1);
+      __ bctr();
+    }
+  }
+}
+
+#ifndef PRODUCT
+void trace_method_handle_stub(const char* adaptername,
+                              oopDesc* mh,
+                              intptr_t* entry_sp,
+                              intptr_t* saved_regs) {
+
+  bool has_mh = (strstr(adaptername, "/static") == NULL &&
+                 strstr(adaptername, "linkTo") == NULL);    // static linkers don't have MH
+  const char* mh_reg_name = has_mh ? "R23_method_handle" : "G23";
+  tty->print_cr("MH %s %s="INTPTR_FORMAT " sp=" INTPTR_FORMAT,
+                adaptername, mh_reg_name, (intptr_t) mh, entry_sp);
+
+  if (Verbose) {
+    tty->print_cr("Registers:");
+    const int abi_offset = frame::abi_112_size / 8;
+    for (int i = R3->encoding(); i <= R13->encoding(); i++) {
+      Register r = as_Register(i);
+      int count = i - R3->encoding();
+      // The registers are stored in reverse order on the stack (by save_volatile_gprs(R1_SP, abi_112_size)).
+      tty->print("%3s=" PTR_FORMAT, r->name(), saved_regs[abi_offset + count]);
+      if ((count + 1) % 4 == 0) {
+        tty->cr();
+      } else {
+        tty->print(", ");
+      }
+    }
+    tty->cr();
+
+    {
+      // dumping last frame with frame::describe
+
+      JavaThread* p = JavaThread::active();
+
+      ResourceMark rm;
+      PRESERVE_EXCEPTION_MARK; // may not be needed by safer and unexpensive here
+      FrameValues values;
+
+      // Note: We want to allow trace_method_handle from any call site.
+      // While trace_method_handle creates a frame, it may be entered
+      // without a PC on the stack top (e.g. not just after a call).
+      // Walking that frame could lead to failures due to that invalid PC.
+      // => carefully detect that frame when doing the stack walking
+
+      // Current C frame
+      frame cur_frame = os::current_frame();
+
+      // Robust search of trace_calling_frame (independant of inlining).
+      // Assumes saved_regs comes from a pusha in the trace_calling_frame.
+      assert(cur_frame.sp() < saved_regs, "registers not saved on stack ?");
+      frame trace_calling_frame = os::get_sender_for_C_frame(&cur_frame);
+      while (trace_calling_frame.fp() < saved_regs) {
+        trace_calling_frame = os::get_sender_for_C_frame(&trace_calling_frame);
+      }
+
+      // safely create a frame and call frame::describe
+      intptr_t *dump_sp = trace_calling_frame.sender_sp();
+
+      frame dump_frame = frame(dump_sp);
+      dump_frame.describe(values, 1);
+
+      values.describe(-1, saved_regs, "raw top of stack");
+
+      tty->print_cr("Stack layout:");
+      values.print(p);
+    }
+
+    if (has_mh && mh->is_oop()) {
+      mh->print();
+      if (java_lang_invoke_MethodHandle::is_instance(mh)) {
+        if (java_lang_invoke_MethodHandle::form_offset_in_bytes() != 0)
+          java_lang_invoke_MethodHandle::form(mh)->print();
+      }
+    }
+  }
+}
+
+void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) {
+  if (!TraceMethodHandles) return;
+
+  BLOCK_COMMENT("trace_method_handle {");
+
+  int nbytes_save = 10 * 8;             // 10 volatile gprs
+  __ save_LR_CR(R0);
+  __ mr(R0, R1_SP);                     // saved_sp
+  assert(Assembler::is_simm(-nbytes_save, 16), "Overwriting R0");
+  // push_frame_abi112 only uses R0 if nbytes_save is wider than 16 bit
+  __ push_frame_abi112(nbytes_save, R0);
+  __ save_volatile_gprs(R1_SP, frame::abi_112_size); // Except R0.
+
+  __ load_const(R3_ARG1, (address)adaptername);
+  __ mr(R4_ARG2, R23_method_handle);
+  __ mr(R5_ARG3, R0);        // saved_sp
+  __ mr(R6_ARG4, R1_SP);
+  __ call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub));
+
+  __ restore_volatile_gprs(R1_SP, 112); // except R0
+  __ pop_frame();
+  __ restore_LR_CR(R0);
+
+  BLOCK_COMMENT("} trace_method_handle");
+}
+#endif // PRODUCT