1 /* src/vm/jit/i386/freebsd/md-os.c - machine dependent i386 FreeBSD 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
30 #include "vm/jit/i386/md-abi.h"
32 #include "vm/exceptions.h"
33 #include "vm/signallocal.h"
34 #include "vm/jit/asmpart.h"
35 #include "vm/jit/stacktrace.h"
38 /* md_signal_handler_sigsegv ***************************************************
40 NullPointerException signal handler for hardware null pointer
43 *******************************************************************************/
45 void md_signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
53 _uc = (ucontext_t *) _p;
54 _mc = &_uc->uc_mcontext;
56 sp = (u1 *) _mc->mc_esp;
57 xpc = (u1 *) _mc->mc_eip;
58 ra = xpc; /* return address is equal to xpc */
61 (ptrint) stacktrace_hardware_nullpointerexception(NULL, sp, ra, xpc);
63 _mc->mc_ecx = (ptrint) xpc; /* REG_ITMP2_XPC */
64 _mc->mc_eip = (ptrint) asm_handle_exception;
68 /* md_signal_handler_sigfpe ****************************************************
70 ArithmeticException signal handler for hardware divide by zero
73 *******************************************************************************/
75 void md_signal_handler_sigfpe(int sig, siginfo_t *siginfo, void *_p)
83 _uc = (ucontext_t *) _p;
84 _mc = &_uc->uc_mcontext;
86 sp = (u1 *) _mc->mc_esp;
87 xpc = (u1 *) _mc->mc_eip;
88 ra = xpc; /* return address is equal to xpc */
91 (ptrint) stacktrace_hardware_arithmeticexception(NULL, sp, ra, xpc);
93 _mc->mc_ecx = (ptrint) xpc; /* REG_ITMP2_XPC */
94 _mc->mc_eip = (ptrint) asm_handle_exception;
99 * These are local overrides for various environment variables in Emacs.
100 * Please do not remove this and leave it at the end of the file, where
101 * Emacs will automagically detect them.
102 * ---------------------------------------------------------------------
105 * indent-tabs-mode: t