Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- $Id: signal.c 8027 2007-06-07 10:30:33Z michi $
+ $Id: signal.c 8299 2007-08-13 08:41:18Z michi $
*/
#include <assert.h>
#include <errno.h>
#include <signal.h>
+#include <stdint.h>
#include <stdlib.h>
#if defined(__DARWIN__)
# include <sys/types.h>
#endif
-#include "vm/types.h"
-
#include "arch.h"
#include "mm/memory.h"
# include "threads/none/threads.h"
#endif
+#include "toolbox/logging.h"
+
#include "vm/exceptions.h"
#include "vm/signallocal.h"
#include "vm/vm.h"
+#include "vm/jit/codegen-common.h"
+#include "vm/jit/disass.h"
+#include "vm/jit/patcher-common.h"
+
#include "vmcore/options.h"
#if defined(ENABLE_STATISTICS)
bool signal_init(void)
{
#if !defined(__CYGWIN__)
- sigset_t mask;
- struct sigaction act;
+ sigset_t mask;
#if defined(__LINUX__) && defined(ENABLE_THREADS)
/* XXX Remove for exact-GC. */
/* Allocate something so the garbage collector's signal handlers
are installed. */
- (void) GCNEW(u1);
+ (void) GCNEW(int);
#endif
/* Install signal handlers for signals we want to catch in all
threads. */
- sigemptyset(&act.sa_mask);
-
#if defined(ENABLE_JIT)
# if defined(ENABLE_INTRP)
if (!opt_intrp) {
# endif
/* SIGSEGV handler */
- act.sa_sigaction = md_signal_handler_sigsegv;
- act.sa_flags = SA_NODEFER | SA_SIGINFO;
-
-# if defined(SIGSEGV)
- sigaction(SIGSEGV, &act, NULL);
-# endif
+ signal_register_signal(SIGSEGV, (void *) md_signal_handler_sigsegv,
+ SA_NODEFER | SA_SIGINFO);
# if defined(SIGBUS)
- sigaction(SIGBUS, &act, NULL);
+ signal_register_signal(SIGBUS, (void *) md_signal_handler_sigsegv,
+ SA_NODEFER | SA_SIGINFO);
# endif
# if SUPPORT_HARDWARE_DIVIDE_BY_ZERO
/* SIGFPE handler */
- act.sa_sigaction = md_signal_handler_sigfpe;
- act.sa_flags = SA_NODEFER | SA_SIGINFO;
- sigaction(SIGFPE, &act, NULL);
+ signal_register_signal(SIGFPE, (void *) md_signal_handler_sigfpe,
+ SA_NODEFER | SA_SIGINFO);
# endif
# if defined(__ARM__) || defined(__S390__)
/* XXX use better defines for that (in arch.h) */
/* SIGILL handler */
- act.sa_sigaction = md_signal_handler_sigill;
- act.sa_flags = SA_NODEFER | SA_SIGINFO;
- sigaction(SIGILL, &act, NULL);
+ signal_register_signal(SIGILL, (void *) md_signal_handler_sigill,
+ SA_NODEFER | SA_SIGINFO);
# endif
# if defined(__POWERPC__)
/* XXX use better defines for that (in arch.h) */
/* SIGTRAP handler */
- act.sa_sigaction = md_signal_handler_sigtrap;
- act.sa_flags = SA_NODEFER | SA_SIGINFO;
- sigaction(SIGTRAP, &act, NULL);
+ signal_register_signal(SIGTRAP, (void *) md_signal_handler_sigtrap,
+ SA_NODEFER | SA_SIGINFO);
# endif
# if defined(ENABLE_INTRP)
}
#if defined(ENABLE_THREADS)
/* SIGHUP handler for threads_thread_interrupt */
- act.sa_sigaction = signal_handler_sighup;
- act.sa_flags = 0;
- sigaction(SIGHUP, &act, NULL);
+ signal_register_signal(SIGHUP, (void *) signal_handler_sighup, 0);
#endif
#if defined(ENABLE_THREADS) && defined(ENABLE_GC_CACAO)
#if defined(ENABLE_THREADS) && defined(ENABLE_PROFILING)
/* SIGUSR2 handler for profiling sampling */
- act.sa_sigaction = md_signal_handler_sigusr2;
- act.sa_flags = SA_SIGINFO;
- sigaction(SIGUSR2, &act, NULL);
+ signal_register_signal(SIGUSR2, (void *) md_signal_handler_sigusr2,
+ SA_SIGINFO);
#endif
#endif /* !defined(__CYGWIN__) */
}
+/* signal_register_signal ******************************************************
+
+ Register the specified handler with the specified signal.
+
+*******************************************************************************/
+
+void signal_register_signal(int signum, void *handler, int flags)
+{
+ struct sigaction act;
+ void (*function)(int, siginfo_t *, void *);
+
+ function = (void (*)(int, siginfo_t *, void *)) handler;
+
+ if (sigemptyset(&act.sa_mask) != 0)
+ vm_abort("signal_register_signal: sigemptyset failed: %s",
+ strerror(errno));
+
+ act.sa_sigaction = function;
+ act.sa_flags = flags;
+
+ if (sigaction(signum, &act, NULL) != 0)
+ vm_abort("signal_register_signal: sigaction failed: %s",
+ strerror(errno));
+}
+
+
+/* signal_handle ***************************************************************
+
+ Handles the signal caught by a signal handler and calls the correct
+ function.
+
+*******************************************************************************/
+
+void *signal_handle(void *xpc, int type, intptr_t val)
+{
+ void *p;
+ int32_t index;
+ java_object_t *o;
+
+ switch (type) {
+ case EXCEPTION_HARDWARE_NULLPOINTER:
+ p = exceptions_new_nullpointerexception();
+ break;
+
+ case EXCEPTION_HARDWARE_ARITHMETIC:
+ p = exceptions_new_arithmeticexception();
+ break;
+
+ case EXCEPTION_HARDWARE_ARRAYINDEXOUTOFBOUNDS:
+ index = (s4) val;
+ p = exceptions_new_arrayindexoutofboundsexception(index);
+ break;
+
+ case EXCEPTION_HARDWARE_CLASSCAST:
+ o = (java_object_t *) val;
+ p = exceptions_new_classcastexception(o);
+ break;
+
+ case EXCEPTION_HARDWARE_EXCEPTION:
+ p = exceptions_fillinstacktrace();
+ break;
+
+ case EXCEPTION_HARDWARE_PATCHER:
+#if defined(ENABLE_REPLACEMENT)
+ if (replace_me_wrapper(xpc)) {
+ p = NULL;
+ break;
+ }
+#endif
+ p = patcher_handler(xpc);
+ break;
+
+ default:
+ /* Let's try to get a backtrace. */
+
+ codegen_get_pv_from_pc(xpc);
+
+ /* If that does not work, print more debug info. */
+
+ log_println("exceptions_new_hardware_exception: unknown exception type %d", type);
+
+#if SIZEOF_VOID_P == 8
+ log_println("PC=0x%016lx", xpc);
+#else
+ log_println("PC=0x%08x", xpc);
+#endif
+
+#if defined(ENABLE_DISASSEMBLER)
+ log_println("machine instruction at PC:");
+ disassinstr(xpc);
+#endif
+
+ vm_abort("Exiting...");
+
+ /* keep compiler happy */
+
+ p = NULL;
+ }
+
+ return p;
+}
+
+
/* signal_thread ************************************************************
This thread sets the signal mask to catch the user input signals
projects / cacao.git / blobdiff