1 /* src/vm/jit/powerpc/darwin/md-os.c - machine dependent PowerPC Darwin functions
3 Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
4 C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
5 E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
6 J. Wenninger, 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., 51 Franklin Street, Fifth Floor, Boston, MA
25 Contact: cacao@cacaojvm.org
27 Authors: Christian Thalinger
31 $Id: md-os.c 4966 2006-05-26 12:58:40Z twisti $
44 #include "vm/jit/powerpc/darwin/md-abi.h"
46 #include "vm/exceptions.h"
47 #include "vm/global.h"
48 #include "vm/signallocal.h"
49 #include "vm/stringlocal.h"
50 #include "vm/jit/asmpart.h"
51 #include "vm/jit/stacktrace.h"
54 /* md_signal_handler_sigsegv ***************************************************
56 NullPointerException signal handler for hardware null pointer
59 *******************************************************************************/
61 void md_signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
65 ppc_thread_state_t *_ss;
75 _uc = (ucontext_t *) _p;
76 _mc = _uc->uc_mcontext;
79 /* check for NullPointerException */
83 instr = *((u4 *) _ss->srr0);
84 reg = (instr >> 16) & 31;
90 ra = (u1 *) _ss->lr; /* this is correct for leafs */
91 xpc = (u1 *) _ss->srr0;
94 (ptrint) stacktrace_hardware_nullpointerexception(pv, sp, ra, xpc);
96 _ss->r12 = (ptrint) xpc;
97 _ss->srr0 = (ptrint) asm_handle_exception;
100 throw_cacao_exception_exit(string_java_lang_InternalError,
101 "Segmentation fault: 0x%08lx at 0x%08lx",
107 #if defined(ENABLE_THREADS)
108 void thread_restartcriticalsection(ucontext_t *_uc)
111 ppc_thread_state_t *_ss;
114 _mc = _uc->uc_mcontext;
117 critical = critical_find_restart_point((void *) _ss->srr0);
120 _ss->srr0 = (ptrint) critical;
126 * These are local overrides for various environment variables in Emacs.
127 * Please do not remove this and leave it at the end of the file, where
128 * Emacs will automagically detect them.
129 * ---------------------------------------------------------------------
132 * indent-tabs-mode: t