1 /* src/vm/jit/alpha/linux/md.c - machine dependent Alpha Linux 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 4357 2006-01-22 23:33:38Z twisti $
42 #include "vm/jit/sparc64/md-abi.h"
44 #include "vm/exceptions.h"
45 #include "vm/signallocal.h"
46 #include "vm/stringlocal.h"
47 #include "vm/jit/asmpart.h"
48 #include "vm/jit/stacktrace.h"
51 /* md_signal_handler_sigsegv ***************************************************
53 NullPointerException signal handler for hardware null pointer
56 *******************************************************************************/
58 void md_signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
69 _uc = (ucontext_t *) _p;
70 _mc = &_uc->uc_mcontext;
72 instr = *((s4 *) (_mc->mc_gregs[MC_PC]));
73 /*addr = _mc->sc_regs[(instr >> 16) & 0x1f];*/
77 pv = (u1 *) _mc->mc_gregs[MC_G2];
78 sp = (u1 *) _mc->mc_fp;
79 ra = (u1 *) _mc->mc_i7; /* this is correct for leafs */
80 xpc = (u1 *) _mc->mc_gregs[MC_PC];
82 _mc->mc_gregs[MC_G4] =
83 (ptrint) stacktrace_hardware_nullpointerexception(pv, sp, ra, xpc);
85 _mc->mc_gregs[MC_G5] = (ptrint) xpc;
86 _mc->mc_gregs[MC_PC] = (ptrint) asm_handle_exception;
89 addr += (long) ((instr << 16) >> 16);
92 throw_cacao_exception_exit(string_java_lang_InternalError,
93 "Segmentation fault: 0x%016lx at 0x%016lx\n",
94 addr, _mc->mc_gregs[MC_PC]);
101 #if defined(USE_THREADS) && defined(NATIVE_THREADS)
102 void thread_restartcriticalsection(ucontext_t *_uc)
107 _mc = &_uc->uc_mcontext;
109 critical = thread_checkcritical((void *) _mc->sc_pc);
112 _mc->sc_pc = (ptrint) critical;
117 /* md_icacheflush **************************************************************
119 Calls the system's function to flush the instruction cache.
121 *******************************************************************************/
123 void md_icacheflush(u1 *addr, s4 nbytes)
129 /* zero the least significant 3 bits to align on a 64-bit boundary */
130 addr = (u1 *) (((ptrint) addr) & -8l);
146 * These are local overrides for various environment variables in Emacs.
147 * Please do not remove this and leave it at the end of the file, where
148 * Emacs will automagically detect them.
149 * ---------------------------------------------------------------------
152 * indent-tabs-mode: t