1 /* src/vm/jit/powerpc/darwin/md-os.c - machine dependent PowerPC Darwin functions
3 Copyright (C) 1996-2005 R. Grafl, A. Krall, C. Kruegel, C. Oates,
4 R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner,
5 C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger,
6 Institut f. Computersprachen - TU Wien
8 This file is part of CACAO.
10 This program is free software; you can redistribute it and/or
11 modify it under the terms of the GNU General Public License as
12 published by the Free Software Foundation; either version 2, or (at
13 your option) any later version.
15 This program is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25 Contact: cacao@complang.tuwien.ac.at
27 Authors: Christian Thalinger
31 $Id: md-os.c 2998 2005-07-12 09:16:53Z twisti $
41 #include "vm/jit/powerpc/types.h"
42 #include "vm/jit/powerpc/darwin/md-abi.h"
44 #include "vm/exceptions.h"
45 #include "vm/global.h"
46 #include "vm/stringlocal.h"
47 #include "vm/jit/asmpart.h"
48 #include "vm/jit/stacktrace.h"
51 /* signal_handler_sigsegv ******************************************************
53 NullPointerException signal handler for hardware null pointer check.
55 *******************************************************************************/
57 void signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
61 ppc_thread_state_t *_ss;
71 _uc = (ucontext_t *) _p;
72 _mc = _uc->uc_mcontext;
75 /* check for NullPointerException */
79 instr = *((u4 *) _ss->srr0);
80 reg = (instr >> 16) & 31;
86 ra = (functionptr) _ss->lr; /* this is correct for leafs */
87 xpc = (functionptr) _ss->srr0;
89 _ss->r11 = (ptrint) stacktrace_hardware_nullpointerexception(pv, sp, ra, xpc);
91 _ss->r12 = (ptrint) xpc;
92 _ss->srr0 = (ptrint) asm_handle_exception;
95 throw_cacao_exception_exit(string_java_lang_InternalError,
96 "Segmentation fault: 0x%08lx at 0x%08lx",
103 * These are local overrides for various environment variables in Emacs.
104 * Please do not remove this and leave it at the end of the file, where
105 * Emacs will automagically detect them.
106 * ---------------------------------------------------------------------
109 * indent-tabs-mode: t