jdk8-mips64-public/hotspot: src/cpu/zero/vm/nativeInst

6941224: Improved stack overflow handling for Zero
Summary: Adding stack overflow checking to Shark brought to light a bunch of deficiencies in Zero's stack overflow code.
Reviewed-by: twisti
Contributed-by: Gary Benson <gbenson@redhat.com>

     1 /*

     2  * Copyright 2003-2007 Sun Microsystems, Inc.  All Rights Reserved.

     3  * Copyright 2008 Red Hat, Inc.

     4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     5  *

     6  * This code is free software; you can redistribute it and/or modify it

     7  * under the terms of the GNU General Public License version 2 only, as

     8  * published by the Free Software Foundation.

     9  *

    10  * This code is distributed in the hope that it will be useful, but WITHOUT

    11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    13  * version 2 for more details (a copy is included in the LICENSE file that

    14  * accompanied this code).

    15  *

    16  * You should have received a copy of the GNU General Public License version

    17  * 2 along with this work; if not, write to the Free Software Foundation,

    18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    19  *

    20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    21  * CA 95054 USA or visit www.sun.com if you need additional information or

    22  * have any questions.

    23  *

    24  */

    26 #include "incls/_precompiled.incl"

    27 #include "incls/_nativeInst_zero.cpp.incl"

    29 // This method is called by nmethod::make_not_entrant_or_zombie to

    30 // insert a jump to SharedRuntime::get_handle_wrong_method_stub()

    31 // (dest) at the start of a compiled method (verified_entry) to avoid

    32 // a race where a method is invoked while being made non-entrant.

    33 //

    34 // In Shark, verified_entry is a pointer to a SharkEntry.  We can

    35 // handle this simply by changing it's entry point to point at the

    36 // interpreter.  This only works because the interpreter and Shark

    37 // calling conventions are the same.

    39 void NativeJump::patch_verified_entry(address entry,

    40                                       address verified_entry,

    41                                       address dest) {

    42   assert(dest == SharedRuntime::get_handle_wrong_method_stub(), "should be");

    44 #ifdef CC_INTERP

    45   ((ZeroEntry*) verified_entry)->set_entry_point(

    46     (address) CppInterpreter::normal_entry);

    47 #else

    48   Unimplemented();

    49 #endif // CC_INTERP

    50 }

src/cpu/zero/vm/nativeInst_zero.cpp@f9271ff9d324

src/cpu/zero/vm/nativeInst_zero.cpp

Mercurial > jdk8-mips64-public > hotspot / file revision

src/cpu/zero/vm/nativeInst_zero.cpp@f9271ff9d324

src/cpu/zero/vm/nativeInst_zero.cpp