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

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 1997-2007 Sun Microsystems, Inc.  All Rights Reserved.

     3  * Copyright 2007, 2008, 2009 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 // In normal, CPU-specific ports of HotSpot these two classes are used

    27 // for generating assembly language.  We don't do any of this in zero,

    28 // of course, but we do sneak entry points around in CodeBuffers so we

    29 // generate those here.

    31 class Assembler : public AbstractAssembler {

    32  public:

    33   Assembler(CodeBuffer* code) : AbstractAssembler(code) {}

    35  public:

    36   void pd_patch_instruction(address branch, address target);

    37 #ifndef PRODUCT

    38   static void pd_print_patched_instruction(address branch);

    39 #endif // PRODUCT

    40 };

    42 class MacroAssembler : public Assembler {

    43  public:

    44   MacroAssembler(CodeBuffer* code) : Assembler(code) {}

    46  public:

    47   void align(int modulus);

    48   void bang_stack_with_offset(int offset);

    49   bool needs_explicit_null_check(intptr_t offset);

    50   RegisterOrConstant delayed_value_impl(intptr_t* delayed_value_addr,

    51                                         Register tmp, int offset);

    52  public:

    53   void advance(int bytes);

    54   void store_oop(jobject obj);

    55 };

    57 #ifdef ASSERT

    58 inline bool AbstractAssembler::pd_check_instruction_mark() {

    59   ShouldNotCallThis();

    60 }

    61 #endif

    63 address ShouldNotCallThisStub();

    64 address ShouldNotCallThisEntry();

src/cpu/zero/vm/assembler_zero.hpp@f9271ff9d324

src/cpu/zero/vm/assembler_zero.hpp

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

src/cpu/zero/vm/assembler_zero.hpp@f9271ff9d324

src/cpu/zero/vm/assembler_zero.hpp