| /* |
| * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
| * Copyright 2012, 2014 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 CC_INTERP |
| #define EXCEPTION_ENTRY StubRoutines::throw_NullPointerException_at_call_entry() |
| #else |
| #define EXCEPTION_ENTRY Interpreter::throw_NullPointerException_entry() |
| #endif |
| |
| #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, 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) { |
| 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); |
| __ 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), CC_INTERP_ONLY(R17_tos) NOT_CC_INTERP(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 = CC_INTERP_ONLY(R17_tos) NOT_CC_INTERP(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) { |
| 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 ? 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, EXCEPTION_ENTRY); |
| } else { |
| // load receiver klass itself |
| __ null_check_throw(receiver_reg, oopDesc::klass_offset_in_bytes(), temp1, EXCEPTION_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, (intptr_t) 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). |
| // 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_reg_args only uses R0 if nbytes_save is wider than 16 bit. |
| __ push_frame_reg_args(nbytes_save, R0); |
| __ save_volatile_gprs(R1_SP, frame::abi_reg_args_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 |
