--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/cpu/ppc/methodHandles_ppc.cpp Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,562 @@
+/*
+ * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2017 SAP SE. 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 "classfile/javaClasses.inline.hpp"
+#include "interpreter/interpreter.hpp"
+#include "memory/allocation.inline.hpp"
+#include "memory/resourceArea.hpp"
+#include "prims/jvm.h"
+#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 ":")
+
+// 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, "%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) {
+ InstanceKlass** klass_addr = SystemDictionary::well_known_klass_addr(klass_id);
+ Klass* 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) {
+ Label L_no_such_method;
+ 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);
+ // Null method test is replicated below in compiled case,
+ // it might be able to address across the verify_thread()
+ __ cmplwi(CCR0, R19_method, 0);
+ __ beq(CCR0, L_no_such_method);
+ __ ld(target, in_bytes(Method::interpreter_entry_offset()), R19_method);
+ __ mtctr(target);
+ __ bctr();
+ __ BIND(run_compiled_code);
+ }
+
+ // Compiled case, either static or fall-through from runtime conditional
+ __ cmplwi(CCR0, R19_method, 0);
+ __ beq(CCR0, L_no_such_method);
+
+ 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();
+
+ __ bind(L_no_such_method);
+ assert(StubRoutines::throw_AbstractMethodError_entry() != NULL, "not yet generated!");
+ __ load_const_optimized(target, StubRoutines::throw_AbstractMethodError_entry());
+ __ 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, temp2);
+ __ verify_oop(method_temp);
+ __ load_heap_oop_not_null(method_temp, NONZERO(java_lang_invoke_LambdaForm::vmentry_offset_in_bytes()), method_temp, temp2);
+ __ verify_oop(method_temp);
+ __ load_heap_oop_not_null(method_temp, NONZERO(java_lang_invoke_MemberName::method_offset_in_bytes()), method_temp);
+ __ verify_oop(method_temp);
+ __ ld(method_temp, NONZERO(java_lang_invoke_ResolvedMethodName::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), R15_esp);
+ __ 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 = R15_esp; // 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) {
+ assert(Method::intrinsic_id_size_in_bytes() == 2, "assuming Method::_intrinsic_id is u2");
+
+ Label L;
+ BLOCK_COMMENT("verify_intrinsic_id {");
+ __ load_sized_value(temp1, Method::intrinsic_id_offset_in_bytes(), R19_method,
+ sizeof(u2), /*is_signed*/ false);
+ __ 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 ? R25_tmp5 : 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, -1, temp1,
+ Interpreter::throw_NullPointerException_entry());
+ } else {
+ // load receiver klass itself
+ __ null_check_throw(receiver_reg, oopDesc::klass_offset_in_bytes(), temp1,
+ Interpreter::throw_NullPointerException_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, temp3);
+ 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);
+ }
+ __ load_heap_oop(R19_method, NONZERO(java_lang_invoke_MemberName::method_offset_in_bytes()), member_reg);
+ __ ld(R19_method, NONZERO(java_lang_invoke_ResolvedMethodName::vmtarget_offset_in_bytes()), R19_method);
+ break;
+
+ case vmIntrinsics::_linkToStatic:
+ if (VerifyMethodHandles) {
+ verify_ref_kind(_masm, JVM_REF_invokeStatic, member_reg, temp2);
+ }
+ __ load_heap_oop(R19_method, NONZERO(java_lang_invoke_MemberName::method_offset_in_bytes()), member_reg);
+ __ ld(R19_method, NONZERO(java_lang_invoke_ResolvedMethodName::vmtarget_offset_in_bytes()), R19_method);
+ 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, temp3);
+ 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("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, p2i(mh), p2i(entry_sp));
+
+ if (Verbose) {
+ tty->print_cr("Registers:");
+ const int abi_offset = frame::abi_reg_args_size / 8;
+ for (int i = R3->encoding(); i <= R12->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_reg_args_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).
+ 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 && oopDesc::is_oop(mh)) {
+ 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 {");
+
+ const Register tmp = R11; // Will be preserved.
+ const int nbytes_save = MacroAssembler::num_volatile_regs * 8;
+ __ save_volatile_gprs(R1_SP, -nbytes_save); // except R0
+ __ save_LR_CR(tmp); // save in old frame
+
+ __ mr(R5_ARG3, R1_SP); // saved_sp
+ __ push_frame_reg_args(nbytes_save, tmp);
+
+ __ load_const_optimized(R3_ARG1, (address)adaptername, tmp);
+ __ mr(R4_ARG2, R23_method_handle);
+ __ mr(R6_ARG4, R1_SP);
+ __ call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub));
+
+ __ pop_frame();
+ __ restore_LR_CR(tmp);
+ __ restore_volatile_gprs(R1_SP, -nbytes_save); // except R0
+
+ BLOCK_COMMENT("} trace_method_handle");
+}
+#endif // PRODUCT