1 /* src/vm/jit/alpha/linux/md.c - machine dependent Alpha Linux 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 4326 2006-01-20 13:25:24Z twisti $
43 #include "vm/jit/alpha/md-abi.h"
45 #include "vm/exceptions.h"
46 #include "vm/signallocal.h"
47 #include "vm/stringlocal.h"
48 #include "vm/jit/asmpart.h"
49 #include "vm/jit/stacktrace.h"
52 /* md_signal_handler_sigsegv ***************************************************
54 NullPointerException signal handler for hardware null pointer
57 *******************************************************************************/
59 void md_signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
70 _uc = (ucontext_t *) _p;
71 _mc = &_uc->uc_mcontext;
73 instr = *((s4 *) (_mc->sc_pc));
74 addr = _mc->sc_regs[(instr >> 16) & 0x1f];
77 pv = (u1 *) _mc->sc_regs[REG_PV];
78 sp = (u1 *) _mc->sc_regs[REG_SP];
79 ra = (u1 *) _mc->sc_regs[REG_RA]; /* this is correct for leafs */
80 xpc = (u1 *) _mc->sc_pc;
82 _mc->sc_regs[REG_ITMP1_XPTR] =
83 (ptrint) stacktrace_hardware_nullpointerexception(pv, sp, ra, xpc);
85 _mc->sc_regs[REG_ITMP2_XPC] = (ptrint) xpc;
86 _mc->sc_pc = (ptrint) asm_handle_exception;
89 addr += (long) ((instr << 16) >> 16);
91 throw_cacao_exception_exit(string_java_lang_InternalError,
92 "Segmentation fault: 0x%016lx at 0x%016lx\n",
98 #if defined(USE_THREADS) && defined(NATIVE_THREADS)
99 void thread_restartcriticalsection(ucontext_t *_uc)
104 _mc = &_uc->uc_mcontext;
106 critical = thread_checkcritical((void *) _mc->sc_pc);
109 _mc->sc_pc = (ptrint) critical;
115 * These are local overrides for various environment variables in Emacs.
116 * Please do not remove this and leave it at the end of the file, where
117 * Emacs will automagically detect them.
118 * ---------------------------------------------------------------------
121 * indent-tabs-mode: t