Thu, 15 Apr 2010 02:40:12 -0700
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>
never@1445 | 1 | /* |
never@1445 | 2 | * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved. |
twisti@1814 | 3 | * Copyright 2008, 2010 Red Hat, Inc. |
never@1445 | 4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
never@1445 | 5 | * |
never@1445 | 6 | * This code is free software; you can redistribute it and/or modify it |
never@1445 | 7 | * under the terms of the GNU General Public License version 2 only, as |
never@1445 | 8 | * published by the Free Software Foundation. |
never@1445 | 9 | * |
never@1445 | 10 | * This code is distributed in the hope that it will be useful, but WITHOUT |
never@1445 | 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
never@1445 | 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
never@1445 | 13 | * version 2 for more details (a copy is included in the LICENSE file that |
never@1445 | 14 | * accompanied this code). |
never@1445 | 15 | * |
never@1445 | 16 | * You should have received a copy of the GNU General Public License version |
never@1445 | 17 | * 2 along with this work; if not, write to the Free Software Foundation, |
never@1445 | 18 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
never@1445 | 19 | * |
never@1445 | 20 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
never@1445 | 21 | * CA 95054 USA or visit www.sun.com if you need additional information or |
never@1445 | 22 | * have any questions. |
never@1445 | 23 | * |
never@1445 | 24 | */ |
never@1445 | 25 | |
never@1445 | 26 | // | ... | |
never@1445 | 27 | // +--------------------+ ------------------ |
never@1445 | 28 | // | frame_type | low addresses |
never@1445 | 29 | // | next_frame | high addresses |
never@1445 | 30 | // +--------------------+ ------------------ |
never@1445 | 31 | // | ... | |
never@1445 | 32 | |
never@1445 | 33 | class FakeStubFrame : public ZeroFrame { |
never@1445 | 34 | private: |
never@1445 | 35 | FakeStubFrame() : ZeroFrame() { |
never@1445 | 36 | ShouldNotCallThis(); |
never@1445 | 37 | } |
never@1445 | 38 | |
never@1445 | 39 | protected: |
never@1445 | 40 | enum Layout { |
never@1445 | 41 | header_words = jf_header_words |
never@1445 | 42 | }; |
never@1445 | 43 | |
never@1445 | 44 | public: |
twisti@1814 | 45 | static FakeStubFrame *build(TRAPS); |
never@1445 | 46 | |
never@1445 | 47 | public: |
never@1445 | 48 | void identify_word(int frame_index, |
never@1445 | 49 | int offset, |
never@1445 | 50 | char* fieldbuf, |
never@1445 | 51 | char* valuebuf, |
never@1445 | 52 | int buflen) const {} |
never@1445 | 53 | }; |