$NetBSD: patch-al,v 1.1.1.1 2011/07/27 10:23:49 cherry Exp $

--- src/netbsd/signal-netbsd.c.orig	2009-12-16 12:47:32.000000000 +0000
+++ src/netbsd/signal-netbsd.c
@@ -0,0 +1,171 @@
+/*
+ * Copyright (C) 1995-2007, Hewlett-Packard Development Company, L.P.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or 
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, 
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of 
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include <sys/types.h>
+#include <assert.h>
+#include <errno.h>
+#include <signal.h>
+#include <string.h>
+
+#include "std.h"
+#include "types.h"
+#include "exportui.h"
+#include "coreui.h"
+#include "sim.h"
+#include "libsrs.h"
+#include "libcore.h"
+#include "state.h"
+
+#include "netbsd/signal-netbsd.h"
+
+static struct {
+	int	valid;
+	int	flags;
+	ADDR	handler;
+	sigset_t mask;
+	struct siginfo64 info;
+} siginfo[SIGRTMAX];
+
+static sigset_t sigpend, sigmask;
+
+void signal_return(void)
+{
+	assert(0);
+}
+
+void signal_invoke_handler(int in_syscall)
+{
+	int i, sig;
+	uint32_t sigword;
+
+	for (i = 0, sig = 0; i < _SIG_WORDS; i++, sig += 32) {
+		sigword = sigpend.__bits[i] & ~sigmask.__bits[i];
+		if (sigword)
+			break;
+	}
+	assert(sigword);
+	sig += ffs(sigword);
+	assert(sig > 0 && sig <= SIGRTMAX);
+
+	/* XXX need to actually deliver the signal. Ignore for now. */
+	sigdelset(&sigpend, sig);
+}
+
+int signal_pending(void)
+{
+	int i;
+
+	for (i = 0; i < _SIG_WORDS; i++) {
+		if (sigpend.__bits[i] &&
+		    sigpend.__bits[i] & ~sigmask.__bits[i])
+			return (1);
+	}
+	return (0);
+}
+
+void signal_queue_info(int sig, ADDR ifa)
+{
+	struct siginfo64 *si64;
+
+	/* Sanity checks. */
+	if (sig <= 0 || sig > SIGRTMAX)
+		return;
+
+	/* XXX We need to deliver the trap. For now, halt the program. */
+	progStop("Got trap %d (IFA=0x%016llx, IP=0x%016llx)\n", sig, ifa, ip);
+
+	sigaddset(&sigpend, sig);
+	si64 = &siginfo[sig - 1].info;
+	memset(si64, 0, sizeof(*si64));
+	si64->si_addr = ifa; /* XXX: normalise pointers to ptr64_t */
+}
+
+static void signal_handler(int sig, siginfo_t *si, void *uc)
+{
+	struct siginfo64 *si64;
+
+	/* Sanity checks. */
+	if (sig <= 0 || sig > SIGRTMAX) {
+		return;
+	}
+
+#if 0
+	printf("Got signal %d\n", sig);
+#endif
+
+	sigaddset(&sigpend, sig);
+	si64 = &siginfo[sig - 1].info;
+	si64->si_signo = sig;
+	si64->si_errno = si->si_errno;
+	si64->si_code = si->si_code;
+	si64->si_pid = si->si_pid;
+	si64->si_uid = si->si_uid;
+	si64->si_status = si->si_status;
+	si64->si_addr = (long)si->si_addr;
+	si64->si_value.sival_ptr = si->si_value.sival_ptr;
+	si64->si_band = si->si_band;
+}
+
+int signal_get_handler(int sig, struct sigaction64 *sa64)
+{
+	struct sigaction sa;
+
+	if (sig <= 0 || sig > SIGRTMAX)
+		return (EINVAL);
+
+	if (!siginfo[sig - 1].valid) {
+		if (sigaction(sig, NULL, &sa) == -1)
+			return (errno);
+		siginfo[sig - 1].valid = 1;
+		siginfo[sig - 1].handler = 0;
+		siginfo[sig - 1].flags = sa.sa_flags;
+		siginfo[sig - 1].mask = sa.sa_mask;
+	}
+	sa64->sa_handler = siginfo[sig - 1].handler;
+	sa64->sa_flags = siginfo[sig - 1].flags;
+	sa64->sa_mask = siginfo[sig - 1].mask;
+	return (0);
+}
+
+int signal_set_handler(int sig, struct sigaction64 *sa64)
+{
+	struct sigaction sa;
+
+	if (sig <= 0 || sig > SIGRTMAX)
+		return (EINVAL);
+
+	sa.sa_flags = sa64->sa_flags;
+	sa.sa_mask = sa64->sa_mask;
+	if (sa64->sa_handler == 0)
+		sa.sa_handler = SIG_DFL;
+	else if (sa64->sa_handler == 1)
+		sa.sa_handler = SIG_IGN;
+	else {
+		sa.sa_sigaction = signal_handler;
+		sa.sa_flags |= SA_SIGINFO;
+	}
+	if (sigaction(sig, &sa, NULL) == -1)
+		return (errno);
+
+	siginfo[sig - 1].handler = sa64->sa_handler;
+	siginfo[sig - 1].flags = sa64->sa_flags;
+	siginfo[sig - 1].mask = sa64->sa_mask;
+	siginfo[sig - 1].valid = 1;
+	return (0);
+}