1 /* src/vm/jit/powerpc/netbsd/md-os.c - machine dependent PowerPC NetBSD 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
40 #include "vm/jit/powerpc/netbsd/md-abi.h"
42 #include "vm/exceptions.h"
43 #include "vm/signallocal.h"
44 #include "vm/stringlocal.h"
45 #include "vm/jit/asmpart.h"
46 #include "vm/jit/stacktrace.h"
49 /* md_signal_handle_sigsegv ****************************************************
51 NullPointerException signal handler for hardware null pointer
54 *******************************************************************************/
56 void md_signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
68 _uc = (ucontext_t *) _p;
69 _mc = _uc->uc_mcontext.uc_regs;
71 instr = *((u4 *) _mc->gregs[PT_NIP]);
72 reg = (instr >> 16) & 0x1f;
73 addr = _mc->gregs[reg];
76 pv = (u1 *) _mc->gregs[REG_PV];
77 sp = (u1 *) _mc->gregs[REG_SP];
78 ra = (u1 *) _mc->gregs[PT_LNK]; /* this is correct for leafs */
79 xpc = (u1 *) _mc->gregs[PT_NIP];
81 _mc->gregs[REG_ITMP1_XPTR] =
82 (ptrint) stacktrace_hardware_nullpointerexception(pv, sp, ra, xpc);
84 _mc->gregs[REG_ITMP2_XPC] = (ptrint) xpc;
85 _mc->gregs[PT_NIP] = (ptrint) asm_handle_exception;
88 throw_cacao_exception_exit(string_java_lang_InternalError,
89 "Segmentation fault: 0x%08lx at 0x%08lx",
90 addr, _mc->gregs[PT_NIP]);
95 #if defined(ENABLE_THREADS)
96 void thread_restartcriticalsection(ucontext_t *uc)
98 /* XXX set pc to restart address */
104 * These are local overrides for various environment variables in Emacs.
105 * Please do not remove this and leave it at the end of the file, where
106 * Emacs will automagically detect them.
107 * ---------------------------------------------------------------------
110 * indent-tabs-mode: t