--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cpu/x86/vm/interp_masm_x86.cpp	Tue Oct 22 09:51:47 2013 +0200
@@ -0,0 +1,229 @@
+/*
+ * Copyright (c) 1997, 2013, 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"
+
+#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 cell 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(ReturnTypeEntry::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, in_bytes(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