hotspot/src/cpu/x86/vm/metaspaceShared_x86_32.cpp
changeset 46324 8764956ec928
parent 46323 d41bb2dcaeb8
child 46325 0fa9327949f8
--- a/hotspot/src/cpu/x86/vm/metaspaceShared_x86_32.cpp	Fri Mar 10 12:58:37 2017 -0500
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,124 +0,0 @@
-/*
- * Copyright (c) 2004, 2012, 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 "asm/macroAssembler.hpp"
-#include "asm/codeBuffer.hpp"
-#include "memory/metaspaceShared.hpp"
-
-// Generate the self-patching vtable method:
-//
-// This method will be called (as any other Klass virtual method) with
-// the Klass itself as the first argument.  Example:
-//
-//      oop obj;
-//      int size = obj->klass()->oop_size(this);
-//
-// for which the virtual method call is Klass::oop_size();
-//
-// The dummy method is called with the Klass object as the first
-// operand, and an object as the second argument.
-//
-
-//=====================================================================
-
-// All of the dummy methods in the vtable are essentially identical,
-// differing only by an ordinal constant, and they bear no relationship
-// to the original method which the caller intended. Also, there needs
-// to be 'vtbl_list_size' instances of the vtable in order to
-// differentiate between the 'vtable_list_size' original Klass objects.
-
-#define __ masm->
-
-void MetaspaceShared::generate_vtable_methods(void** vtbl_list,
-                                                   void** vtable,
-                                                   char** md_top,
-                                                   char* md_end,
-                                                   char** mc_top,
-                                                   char* mc_end) {
-
-  intptr_t vtable_bytes = (num_virtuals * vtbl_list_size) * sizeof(void*);
-  *(intptr_t *)(*md_top) = vtable_bytes;
-  *md_top += sizeof(intptr_t);
-  void** dummy_vtable = (void**)*md_top;
-  *vtable = dummy_vtable;
-  *md_top += vtable_bytes;
-
-  // Get ready to generate dummy methods.
-
-  CodeBuffer cb((unsigned char*)*mc_top, mc_end - *mc_top);
-  MacroAssembler* masm = new MacroAssembler(&cb);
-
-  Label common_code;
-  for (int i = 0; i < vtbl_list_size; ++i) {
-    for (int j = 0; j < num_virtuals; ++j) {
-      dummy_vtable[num_virtuals * i + j] = (void*)masm->pc();
-
-      // Load rax, with a value indicating vtable/offset pair.
-      // -- bits[ 7..0]  (8 bits) which virtual method in table?
-      // -- bits[12..8]  (5 bits) which virtual method table?
-      // -- must fit in 13-bit instruction immediate field.
-      __ movl(rax, (i << 8) + j);
-      __ jmp(common_code);
-    }
-  }
-
-  __ bind(common_code);
-
-#ifdef WIN32
-  // Expecting to be called with "thiscall" conventions -- the arguments
-  // are on the stack, except that the "this" pointer is in rcx.
-#else
-  // Expecting to be called with Unix conventions -- the arguments
-  // are on the stack, including the "this" pointer.
-#endif
-
-  // In addition, rax was set (above) to the offset of the method in the
-  // table.
-
-#ifdef WIN32
-  __ push(rcx);                         // save "this"
-#endif
-  __ mov(rcx, rax);
-  __ shrptr(rcx, 8);                    // isolate vtable identifier.
-  __ shlptr(rcx, LogBytesPerWord);
-  Address index(noreg, rcx,  Address::times_1);
-  ExternalAddress vtbl((address)vtbl_list);
-  __ movptr(rdx, ArrayAddress(vtbl, index)); // get correct vtable address.
-#ifdef WIN32
-  __ pop(rcx);                          // restore "this"
-#else
-  __ movptr(rcx, Address(rsp, BytesPerWord));   // fetch "this"
-#endif
-  __ movptr(Address(rcx, 0), rdx);      // update vtable pointer.
-
-  __ andptr(rax, 0x00ff);                       // isolate vtable method index
-  __ shlptr(rax, LogBytesPerWord);
-  __ addptr(rax, rdx);                  // address of real method pointer.
-  __ jmp(Address(rax, 0));              // get real method pointer.
-
-  __ flush();
-
-  *mc_top = (char*)__ pc();
-}