jdk8-mips64-public/hotspot: src/cpu/x86/vm/interp_masm

src/cpu/x86/vm/interp_masm_x86.cpp@bb1da64b0492 (annotated)

src/cpu/x86/vm/interp_masm_x86.cpp

Fri, 16 Aug 2019 16:50:17 +0200

author: eosterlund
date: Fri, 16 Aug 2019 16:50:17 +0200
changeset 9834: bb1da64b0492
parent 8368: 32b682649973
child 8604: 04d83ba48607
permissions: -rw-r--r--

8229345: Memory leak due to vtable stubs not being shared on SPARC
Reviewed-by: mdoerr, dholmes, kvn

 /*
  * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #include "precompiled.hpp"
 #include "interp_masm_x86.hpp"
 #include "interpreter/interpreter.hpp"
 #include "oops/methodData.hpp"
 // 8u does not have InterpreterMacroAssembler::load_earlyret_value here
 void InterpreterMacroAssembler::narrow(Register result) {
   // Get method->_constMethod->_result_type
   movptr(rcx, Address(rbp, frame::interpreter_frame_method_offset * wordSize));
   movptr(rcx, Address(rcx, Method::const_offset()));
   load_unsigned_byte(rcx, Address(rcx, ConstMethod::result_type_offset()));
   Label done, notBool, notByte, notChar;
   // common case first
   cmpl(rcx, T_INT);
   jcc(Assembler::equal, done);
   // mask integer result to narrower return type.
   cmpl(rcx, T_BOOLEAN);
   jcc(Assembler::notEqual, notBool);
   andl(result, 0x1);
   jmp(done);
   bind(notBool);
   cmpl(rcx, T_BYTE);
   jcc(Assembler::notEqual, notByte);
   LP64_ONLY(movsbl(result, result);)
   NOT_LP64(shll(result, 24);)      // truncate upper 24 bits
   NOT_LP64(sarl(result, 24);)      // and sign-extend byte
   jmp(done);
   bind(notByte);
   cmpl(rcx, T_CHAR);
   jcc(Assembler::notEqual, notChar);
   LP64_ONLY(movzwl(result, result);)
   NOT_LP64(andl(result, 0xFFFF);)  // truncate upper 16 bits
   jmp(done);
   bind(notChar);
   // cmpl(rcx, T_SHORT);  // all that's left
   // jcc(Assembler::notEqual, done);
   LP64_ONLY(movswl(result, result);)
   NOT_LP64(shll(result, 16);)      // truncate upper 16 bits
   NOT_LP64(sarl(result, 16);)      // and sign-extend short
   // Nothing to do for T_INT
   bind(done);
 }
 #ifndef CC_INTERP
 void InterpreterMacroAssembler::profile_obj_type(Register obj, const Address& mdo_addr) {
   Label update, next, none;
   verify_oop(obj);
   testptr(obj, obj);
   jccb(Assembler::notZero, update);
   orptr(mdo_addr, TypeEntries::null_seen);
   jmpb(next);
   bind(update);
   load_klass(obj, obj);
   xorptr(obj, mdo_addr);
   testptr(obj, TypeEntries::type_klass_mask);
   jccb(Assembler::zero, next); // klass seen before, nothing to
                                // do. The unknown bit may have been
                                // set already but no need to check.
   testptr(obj, TypeEntries::type_unknown);
   jccb(Assembler::notZero, next); // already unknown. Nothing to do anymore.
   cmpptr(mdo_addr, 0);
   jccb(Assembler::equal, none);
   cmpptr(mdo_addr, TypeEntries::null_seen);
   jccb(Assembler::equal, none);
   // There is a chance that the checks above (re-reading profiling
   // data from memory) fail if another thread has just set the
   // profiling to this obj's klass
   xorptr(obj, mdo_addr);
   testptr(obj, TypeEntries::type_klass_mask);
   jccb(Assembler::zero, next);
   // different than before. Cannot keep accurate profile.
   orptr(mdo_addr, TypeEntries::type_unknown);
   jmpb(next);
   bind(none);
   // first time here. Set profile type.
   movptr(mdo_addr, obj);
   bind(next);
 }
 void InterpreterMacroAssembler::profile_arguments_type(Register mdp, Register callee, Register tmp, bool is_virtual) {
   if (!ProfileInterpreter) {
     return;
   }
   if (MethodData::profile_arguments() || MethodData::profile_return()) {
     Label profile_continue;
     test_method_data_pointer(mdp, profile_continue);
     int off_to_start = is_virtual ? in_bytes(VirtualCallData::virtual_call_data_size()) : in_bytes(CounterData::counter_data_size());
     cmpb(Address(mdp, in_bytes(DataLayout::tag_offset()) - off_to_start), is_virtual ? DataLayout::virtual_call_type_data_tag : DataLayout::call_type_data_tag);
     jcc(Assembler::notEqual, profile_continue);
     if (MethodData::profile_arguments()) {
       Label done;
       int off_to_args = in_bytes(TypeEntriesAtCall::args_data_offset());
       addptr(mdp, off_to_args);
       for (int i = 0; i < TypeProfileArgsLimit; i++) {
         if (i > 0 || MethodData::profile_return()) {
           // If return value type is profiled we may have no argument to profile
           movptr(tmp, Address(mdp, in_bytes(TypeEntriesAtCall::cell_count_offset())-off_to_args));
           subl(tmp, i*TypeStackSlotEntries::per_arg_count());
           cmpl(tmp, TypeStackSlotEntries::per_arg_count());
           jcc(Assembler::less, done);
         }
         movptr(tmp, Address(callee, Method::const_offset()));
         load_unsigned_short(tmp, Address(tmp, ConstMethod::size_of_parameters_offset()));
         // stack offset o (zero based) from the start of the argument
         // list, for n arguments translates into offset n - o - 1 from
         // the end of the argument list
         subptr(tmp, Address(mdp, in_bytes(TypeEntriesAtCall::stack_slot_offset(i))-off_to_args));
         subl(tmp, 1);
         Address arg_addr = argument_address(tmp);
         movptr(tmp, arg_addr);
         Address mdo_arg_addr(mdp, in_bytes(TypeEntriesAtCall::argument_type_offset(i))-off_to_args);
         profile_obj_type(tmp, mdo_arg_addr);
         int to_add = in_bytes(TypeStackSlotEntries::per_arg_size());
         addptr(mdp, to_add);
         off_to_args += to_add;
       }
       if (MethodData::profile_return()) {
         movptr(tmp, Address(mdp, in_bytes(TypeEntriesAtCall::cell_count_offset())-off_to_args));
         subl(tmp, TypeProfileArgsLimit*TypeStackSlotEntries::per_arg_count());
       }
       bind(done);
       if (MethodData::profile_return()) {
         // We're right after the type profile for the last
         // argument. tmp is the number of cells left in the
         // CallTypeData/VirtualCallTypeData to reach its end. Non null
         // if there's a return to profile.
         assert(ReturnTypeEntry::static_cell_count() < TypeStackSlotEntries::per_arg_count(), "can't move past ret type");
         shll(tmp, exact_log2(DataLayout::cell_size));
         addptr(mdp, tmp);
       }
       movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp);
     } else {
       assert(MethodData::profile_return(), "either profile call args or call ret");
       update_mdp_by_constant(mdp, in_bytes(TypeEntriesAtCall::return_only_size()));
     }
     // mdp points right after the end of the
     // CallTypeData/VirtualCallTypeData, right after the cells for the
     // return value type if there's one
     bind(profile_continue);
   }
 }
 void InterpreterMacroAssembler::profile_return_type(Register mdp, Register ret, Register tmp) {
   assert_different_registers(mdp, ret, tmp, _bcp_register);
   if (ProfileInterpreter && MethodData::profile_return()) {
     Label profile_continue, done;
     test_method_data_pointer(mdp, profile_continue);
     if (MethodData::profile_return_jsr292_only()) {
       // If we don't profile all invoke bytecodes we must make sure
       // it's a bytecode we indeed profile. We can't go back to the
       // begining of the ProfileData we intend to update to check its
       // type because we're right after it and we don't known its
       // length
       Label do_profile;
       cmpb(Address(_bcp_register, 0), Bytecodes::_invokedynamic);
       jcc(Assembler::equal, do_profile);
       cmpb(Address(_bcp_register, 0), Bytecodes::_invokehandle);
       jcc(Assembler::equal, do_profile);
       get_method(tmp);
       cmpb(Address(tmp, Method::intrinsic_id_offset_in_bytes()), vmIntrinsics::_compiledLambdaForm);
       jcc(Assembler::notEqual, profile_continue);
       bind(do_profile);
     }
     Address mdo_ret_addr(mdp, -in_bytes(ReturnTypeEntry::size()));
     mov(tmp, ret);
     profile_obj_type(tmp, mdo_ret_addr);
     bind(profile_continue);
   }
 }
 void InterpreterMacroAssembler::profile_parameters_type(Register mdp, Register tmp1, Register tmp2) {
   if (ProfileInterpreter && MethodData::profile_parameters()) {
     Label profile_continue, done;
     test_method_data_pointer(mdp, profile_continue);
     // Load the offset of the area within the MDO used for
     // parameters. If it's negative we're not profiling any parameters
     movl(tmp1, Address(mdp, in_bytes(MethodData::parameters_type_data_di_offset()) - in_bytes(MethodData::data_offset())));
     testl(tmp1, tmp1);
     jcc(Assembler::negative, profile_continue);
     // Compute a pointer to the area for parameters from the offset
     // and move the pointer to the slot for the last
     // parameters. Collect profiling from last parameter down.
     // mdo start + parameters offset + array length - 1
     addptr(mdp, tmp1);
     movptr(tmp1, Address(mdp, ArrayData::array_len_offset()));
     decrement(tmp1, TypeStackSlotEntries::per_arg_count());
     Label loop;
     bind(loop);
     int off_base = in_bytes(ParametersTypeData::stack_slot_offset(0));
     int type_base = in_bytes(ParametersTypeData::type_offset(0));
     Address::ScaleFactor per_arg_scale = Address::times(DataLayout::cell_size);
     Address arg_off(mdp, tmp1, per_arg_scale, off_base);
     Address arg_type(mdp, tmp1, per_arg_scale, type_base);
     // load offset on the stack from the slot for this parameter
     movptr(tmp2, arg_off);
     negptr(tmp2);
     // read the parameter from the local area
     movptr(tmp2, Address(_locals_register, tmp2, Interpreter::stackElementScale()));
     // profile the parameter
     profile_obj_type(tmp2, arg_type);
     // go to next parameter
     decrement(tmp1, TypeStackSlotEntries::per_arg_count());
     jcc(Assembler::positive, loop);
     bind(profile_continue);
   }
 }
 #endif

Mercurial > jdk8-mips64-public > hotspot / annotate

src/cpu/x86/vm/interp_masm_x86.cpp@bb1da64b0492 (annotated)

src/cpu/x86/vm/interp_masm_x86.cpp