1 /* src/vm/jit/powerpc/netbsd/md-os.c - machine dependent PowerPC NetBSD functions
3 Copyright (C) 1996-2005, 2006, 2008
4 CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
6 This file is part of CACAO.
8 This program is free software; you can redistribute it and/or
9 modify it under the terms of the GNU General Public License as
10 published by the Free Software Foundation; either version 2, or (at
11 your option) any later version.
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
32 #include "vm/jit/powerpc/netbsd/md-abi.h"
34 #include "vm/exceptions.h"
35 #include "vm/signallocal.h"
36 #include "vm/stringlocal.h"
37 #include "vm/jit/asmpart.h"
38 #include "vm/jit/stacktrace.h"
41 /* md_signal_handle_sigsegv ****************************************************
43 NullPointerException signal handler for hardware null pointer
46 *******************************************************************************/
48 void md_signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
60 _uc = (ucontext_t *) _p;
61 _mc = _uc->uc_mcontext.uc_regs;
63 instr = *((u4 *) _mc->gregs[PT_NIP]);
64 reg = (instr >> 16) & 0x1f;
65 addr = _mc->gregs[reg];
68 pv = (u1 *) _mc->gregs[REG_PV];
69 sp = (u1 *) _mc->gregs[REG_SP];
70 ra = (u1 *) _mc->gregs[PT_LNK]; /* this is correct for leafs */
71 xpc = (u1 *) _mc->gregs[PT_NIP];
73 _mc->gregs[REG_ITMP1_XPTR] =
74 (ptrint) stacktrace_hardware_nullpointerexception(pv, sp, ra, xpc);
76 _mc->gregs[REG_ITMP2_XPC] = (ptrint) xpc;
77 _mc->gregs[PT_NIP] = (ptrint) asm_handle_exception;
80 throw_cacao_exception_exit(string_java_lang_InternalError,
81 "Segmentation fault: 0x%08lx at 0x%08lx",
82 addr, _mc->gregs[PT_NIP]);
88 * These are local overrides for various environment variables in Emacs.
89 * Please do not remove this and leave it at the end of the file, where
90 * Emacs will automagically detect them.
91 * ---------------------------------------------------------------------